Insert injection mold, insert injection structure and preparation method thereof, camera module

Abstract

The present application provides an insert injection mold, an insert injection structure and a preparation method thereof, and a camera module. It includes a first mold body, a second mold body and an ejection mechanism, the first mold body is used to fix the material strip, the material strip includes a metal part, a belt body located outside the metal part and a material bridge connecting the two, the first mold body includes a first surface and a first groove; the second mold body includes a second surface and a second groove, the opening of the second groove and the opening of the first groove are arranged opposite to each other in the height direction of the mold; the ejection mechanism is arranged in the first mold body, and can rise or fall relative to the bottom wall of the first groove, it includes a connected cutting part and a packaging part, the cutting part is used to disconnect the metal part from the belt body, and the packaging part has a third groove, which is used to communicate with the first and second grooves and cooperate to form an injection cavity, so that the metal part and the material bridge connected to the metal part and not cut off by the cutting part are located in the injection cavity. The technical solution of the present application can avoid the risk of short circuit caused by the exposure of metal inserts.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to an insert injection mold, an insert injection structure and a preparation method thereof, and a camera module. Background Art

[0002] Insert Molding (IM) products are products that pre-fix metal inserts in the appropriate position in the injection mold, and then close the mold to inject plastic to form a product. At present, metal inserts are often designed in the form of metal strips and are injection molded in the form of strips. After the injection molding is completed, the strip is taken out of the injection mold and the excess strip is removed through a subsequent cutting process. The insert molding products formed by this cutting process will have certain metal connection positions on the surface of the product. This metal connection position is exposed to the external environment and is easily in contact with external conductive parts to cause a short circuit. Summary of the invention

[0003] The embodiments of the present application provide an insert injection mold, an insert injection structure and a preparation method thereof, and a camera module, which can avoid the risk of short circuit caused by exposed metal inserts.

[0004] In a first aspect of the present application, an insert injection mold is provided, the insert injection mold comprising:

[0005] A first mold body, the first mold body is used to fix the material strip, the material strip includes a metal piece, a strip body located outside the metal piece, and a material bridge connected between the metal piece and the strip body, the first mold body includes a first surface, the first mold body has a first groove, and the opening of the first groove is located on the first surface;

[0006] a second mold body, the second mold body comprising a second surface, the second surface facing the first surface, the second mold body having a second groove, the opening of the second groove being located on the second surface, and the opening of the second groove and the opening of the first groove being arranged opposite to each other in a height direction of the insert injection mold; and

[0007] An ejection mechanism is provided through the first mold body, and the ejection mechanism can rise or fall relative to the bottom wall of the first groove. The ejection mechanism includes a cutter part and a packaging part connected to each other, and the cutter part is used to cut the material bridge so that the metal part is disconnected from the belt body. The packaging part has a third groove, and the third groove is used to communicate with the first groove and the second groove and cooperate to form an injection cavity, so that the metal part and the material bridge connected to the metal part and not cut off by the cutter part are located in the injection cavity.

[0008] It is understandable that, since the ejection mechanism can rise relative to the bottom wall of the first groove, the ejection mechanism can actually realize the ejection movement relative to the first mold body. During the ejection process of the ejection mechanism relative to the first mold body, the cutter portion of the ejection mechanism will contact the material bridge of the material strip in advance. Since the cutter portion of the ejection mechanism has a certain width, during the continuous ejection process of the ejection mechanism, the cutter portion of the ejection mechanism will cut off part of the material bridge of the material strip that is in contact with it from the material bridge through the ejection action. At this time, since part of the material bridge of the material strip is cut off, the body of the material strip will be disconnected from the metal part of the material strip, and a section of the material bridge of the material strip that has not been cut off will remain on the metal part of the material strip.

[0009] When the cutter part of the ejection mechanism completes the cutting of the material bridge of the material strip, the ejection mechanism can then rise relative to the bottom wall of the first groove, thereby realizing the secondary ejection movement of the ejection mechanism relative to the first mold body. After the secondary ejection movement of the ejection mechanism is completed, the third groove of the packaging part can be connected with the first groove of the first mold body and the second groove of the second mold body and cooperate to form the injection cavity of the insert injection mold. Under this setting, the metal part and the material bridge connected to the metal part and not cut off by the cutter part will be located in the injection cavity, so that when the insert injection mold is injecting the injection cavity, the plastic can fill the injection cavity, thereby completely wrapping the metal part and the material bridge connected to the metal part and not cut off by the cutter part, so that in the finished insert injection structure produced by the insert injection mold, the metal part and the material bridge connected to the metal part and not cut off by the cutter part will be located inside the plastic, effectively avoiding the risk of short circuit caused by the exposure of the metal insert, and having better reliability.

[0010] In addition, compared with the related art, after the material strip is injected into the mold, it is necessary to remove the material strip from the mold, and cut off the excess material strip through a subsequent cutting process to form an insert injection molding product. In the technical solution of the present application, since the insert injection mold can integrate the two functions of cutting and injection molding, the cutting of the material strip and the cross-section sealing of the metal insert can be achieved only through the insert injection mold itself, thereby saving the time required for the production of insert injection molding products and improving the working efficiency of the insert injection mold.

[0011] Moreover, in the related art, since the material strip is first injection molded, and then the injected material strip is taken out of the mold and cut, in order to avoid problems such as adhesive deformation and poor cross-section quality caused by cutting, only metal is often cut without cutting plastic, resulting in certain metal connection positions on the outer surface of the insert injection molded product, which may easily cause the risk of short circuit of the insert injection molded product. In the technical solution of the present application, since the material strip is first cut and then the cut cross section is sealed with glue, the cut cross section can be completely wrapped by plastic, so that the outer surface of the prepared insert injection molded structure will not have exposed conductive pins, which effectively reduces the production cost of the insert injection molded structure, improves production efficiency, and prevents the risk of short circuit of the prepared insert injection molded structure.

[0012] In a possible implementation manner, the first mold body has a first card slot, a second card slot and a first ejection hole;

[0013] The first card slot is located at the periphery of the first groove and the opening of the first card slot is located at the first surface, and the first card slot is used to fix the belt body of the material belt;

[0014] The opening of the second card slot is located on the first surface, the second card slot is located between the first groove and the first card slot, and the second card slot is used to fix the material bridge of the material belt;

[0015] The first ejection hole passes through the first surface and the surface of the first mold body away from the second mold body, the first ejection hole connects the first groove and the second slot, the ejection mechanism is located in the first ejection hole, and can move in the first ejection hole along the extension direction of the first ejection hole.

[0016] In the technical solution of the present application, by arranging the first groove, the first card slot and the second card slot in the first mold body, the first groove can be used to fix the metal parts of the material strip, the first card slot is used to fix the strip body of the material strip, and the second card slot is used to fix the material bridge of the material strip, so that the material strip can be firmly fixed to the first mold body through the cooperation of the various groove structures in the first mold body, and the material strip can be effectively prevented from sliding, falling off and other problems during the operation of the insert injection mold, which facilitates the insert injection mold to perform subsequent cutting, injection molding and other processes on the material strip, and has better reliability.

[0017] By providing the first ejection hole, the first ejection hole can be used as a moving channel of the ejection mechanism, and provide a movement space for the ejection mechanism to move relative to the first mold body. By providing the first ejection hole between the first groove and the second clamping groove, the ejection mechanism can cut off the material bridge in the second clamping groove during the ejection process relative to the first mold body, separate the metal part in the first groove from the belt in the first clamping groove, and effectively realize the cutting function of the ejection mechanism.

[0018] In a possible implementation manner, the extension direction of the first ejection hole is arranged to be inclined with respect to the height direction of the insert injection mold; or,

[0019] An extending direction of the first ejection hole is parallel to a height direction of the insert injection mold.

[0020] It can be understood that the extension direction of the first ejection hole can be set obliquely with the height direction of the insert injection mold. In other words, the extension direction of the first ejection hole is set obliquely with the first surface of the first mold body. Under this setting, the ejection mechanism can move along the extension direction of the first ejection hole to achieve inclined ejection. Alternatively, the extension direction of the first ejection hole can also be parallel to the height direction of the insert injection mold. In other words, the extension direction of the first ejection hole is set perpendicular to the first surface of the first mold body. Under this setting, the ejection mechanism can move along the extension direction of the first ejection hole to achieve vertical ejection. It should be noted that the inclination angle of the first ejection hole relative to the height direction of the insert injection mold can be selected according to the actual application of the insert injection mold, and the technical solution of the present application does not impose strict restrictions on this.

[0021] In a possible implementation manner, the first ejection hole includes a first sub-hole and a second sub-hole;

[0022] The opening of one end of the first sub-hole is located at the bottom wall of the first groove, the opening of the other end of the first sub-hole is located at the surface of the first mold body away from the second mold body, and the first sub-hole is connected to the first groove;

[0023] One end of the second sub-hole is connected to the first sub-hole, the opening of the other end of the second sub-hole is located on the first surface, and the second sub-hole is connected to the second slot and the first groove.

[0024] It can be understood that by setting the opening of the first sub-hole on the bottom wall of the first groove, the first ejection hole can be connected with the first groove. By setting the opening of the second sub-hole on the first surface of the first mold body and between the opening of the first groove and the opening of the second card groove, the second sub-hole can be connected with the first groove and the second card groove, thereby enabling the first ejection hole to be connected with both the first groove and the second card groove. Under this setting, during the ejection process of the ejection mechanism relative to the first mold body, the ejection mechanism can first cut off the material bridge located in the second card groove, so that the metal part located in the first groove and the belt body located in the first card groove are separated. Then. The ejection mechanism can also gradually pass through the first groove during the continuous ejection process, so that the structure on the ejection mechanism (such as the third groove below) can cooperate with the first groove to form an injection cavity, ensuring that part of the material bridge connected to the metal part can be completely wrapped in the plastic after the injection molding is completed without being exposed, thereby improving the electrical reliability of the prepared insert injection molding structure.

[0025] In a possible implementation manner, the first mold body includes a first side wall, and an extension direction of the first side wall intersects with an extension direction of the second slot;

[0026] The first ejection hole comprises a first hole wall and a second hole wall, the first hole wall and the second hole wall are arranged opposite to each other in the extension direction of the second clamping groove, and the first hole wall is closer to the first side wall than the second hole wall;

[0027] The distance between the first hole wall and the first side wall gradually changes along the height direction of the first mold body, the distance between the second hole wall and the first side wall gradually changes along the height direction of the first mold body, and the extension direction of the first hole wall is the same as the extension direction of the second hole wall.

[0028] It can be understood that, since the extension direction of the first hole wall and the extension direction of the second hole wall both intersect with the extension direction of the first side wall, the first hole wall and the second hole wall of the first ejection hole are both inclined surfaces. Under this setting, the overall extension direction of the first ejection hole is a direction that is inclined with respect to the height direction of the first mold body (that is, the height direction of the insert injection mold), and the first ejection hole as a whole presents a structural setting of an inclined hole. Since the first ejection hole can allow the ejection mechanism to slide therein, the ejection direction of the ejection mechanism can be adapted to the extension direction of the first ejection hole. In other words, the structural setting of the first ejection hole enables the moving direction of the ejection mechanism to be an inclined direction that intersects with the extension direction of the first side wall of the first mold body, so the ejection mechanism can achieve inclined ejection, which is convenient for the ejection mechanism to be demolded with the prepared insert injection structure during the subsequent ejection process, and has good reliability.

[0029] In a possible implementation manner, the packaging portion includes a first side surface, a second side surface, a third side surface, and a fourth side surface, the first side surface and the second side surface are arranged opposite to each other, the first side surface faces the first hole wall, the second side surface faces the second hole wall, and the third side surface and the fourth side surface are arranged opposite to each other and connected between the first side surface and the second side surface;

[0030] The opening of the third groove is located on the second side surface, and the third groove also runs through the third side surface and the fourth side surface.

[0031] Thus, the third groove of the packaging part can be communicated with the first groove of the first mold body and the second groove of the second mold body to cooperate to form an injection cavity.

[0032] In a possible implementation manner, the second mold body has a second ejection hole and a waste hole, and the second ejection hole and the waste hole are sequentially arranged in a height direction of the second mold body;

[0033] The opening of the second ejection hole is located on the second surface, the opening of the second ejection hole is arranged opposite to the opening of the first ejection hole located on the first surface, the second ejection hole is connected with the second groove and the waste hole, and the second ejection hole is used to communicate with the first ejection hole and cooperate to form a guide channel for the ejection mechanism to move.

[0034] It is understandable that when the second mold body is molded with the first mold body, the second ejection hole can be connected to the first ejection hole of the first mold body, and is used to cooperate with the first ejection hole to form a guide channel for the ejection mechanism to move, thereby providing a movement space for the ejection mechanism to continuously eject. The first ejection hole is arranged between the second groove and the waste hole, so that the ejection mechanism can eject the cut-off section of the material bridge to be cut into the waste hole through the second ejection hole during the secondary ejection process relative to the first mold body, so that the cut-off section of the material bridge to be cut falls from the second ejection hole and the waste hole, realizing the waste discharge function of the insert injection mold.

[0035] In a possible implementation manner, the extension direction of the second ejection hole is arranged to be inclined with respect to the height direction of the insert injection mold; or,

[0036] An extending direction of the second ejection hole is parallel to a height direction of the insert injection mold.

[0037] In the technical solution of the present application, the extension direction of the second ejection hole can be set obliquely with the height direction of the insert injection mold. In other words, the extension direction of the second ejection hole is set obliquely with the second surface of the second mold body. Under this setting, the ejection mechanism can move along the extension direction of the second ejection hole to achieve inclined ejection. Alternatively, the extension direction of the second ejection hole can also be parallel to the height direction of the insert injection mold. In other words, the extension direction of the second ejection hole is set perpendicular to the second surface of the second mold body. Under this setting, the ejection mechanism can move along the extension direction of the second ejection hole to achieve vertical ejection. It should be noted that the inclination angle of the second ejection hole relative to the height direction of the insert injection mold can be selected according to the actual application of the insert injection mold, and the technical solution of the present application does not impose strict restrictions on this.

[0038] In a possible implementation manner, the second ejection hole includes a third sub-hole and a fourth sub-hole;

[0039] The opening of one end of the third sub-hole is located on the second surface, the other end of the third sub-hole is connected to the fourth sub-hole, and the third sub-hole is connected to the second groove;

[0040] An opening of one end of the fourth sub-hole is located at the bottom wall of the second groove, and the other end of the fourth sub-hole is communicated with the waste hole, and the fourth sub-hole is communicated with the second groove.

[0041] It can be understood that by setting the opening of the fourth sub-hole on the bottom wall of the second groove, the second ejection hole can be connected with the second groove. By setting the opening of the third sub-hole on the second surface of the second mold body and connecting with the opening of the second groove, the third sub-hole can be connected with the second groove, thereby enabling the second ejection hole to be connected with the second groove. Under this setting, after the ejection mechanism cuts off the material bridge located in the second card groove, the metal part located in the first groove and the belt body located in the first card groove are separated. The ejection mechanism can also perform secondary ejection and enter the second ejection hole through the first ejection hole, so that the structure on the ejection mechanism (such as the third groove below) can cooperate with the first groove and the second groove to form an injection cavity, ensuring that part of the material bridge connected to the metal part can be completely wrapped in the plastic after the injection molding is completed without being exposed, thereby improving the electrical reliability of the prepared insert injection structure.

[0042] In a possible implementation manner, the second mold body includes a second side wall, and an extension direction of the second side wall intersects with an extension direction of the second card slot;

[0043] The second ejection hole comprises a third hole wall and a fourth hole wall, the third hole wall and the fourth hole wall are arranged opposite to each other in the extension direction of the second clamping groove, and the third hole wall is closer to the second side wall than the fourth hole wall;

[0044] The distance between the third hole wall and the second side wall gradually changes along the height direction of the first mold body, the distance between the fourth hole wall and the second side wall gradually changes along the height direction of the second mold body, and the extension direction of the third hole wall is the same as the extension direction of the fourth hole wall.

[0045] It can be understood that, since the extension direction of the third hole wall and the extension direction of the fourth hole wall both intersect with the extension direction of the second side wall, the third hole wall and the fourth hole wall of the second ejection hole are both inclined surfaces. Under this setting, the overall extension direction of the second ejection hole is a direction that is inclined with respect to the height direction of the second mold body (that is, the height direction of the insert injection mold), and the second ejection hole as a whole presents a structural setting of an inclined hole. Since the second ejection hole can allow the ejection mechanism to slide therein, the ejection direction of the ejection mechanism can be adapted to the extension direction of the second ejection hole. In other words, the structural setting of the second ejection hole enables the moving direction of the ejection mechanism to be an inclined direction that intersects with the extension direction of the second side wall of the second mold body, so the ejection mechanism can achieve inclined ejection, which is convenient for the ejection mechanism to be demolded with the prepared insert injection structure during the subsequent ejection process, and has good reliability.

[0046] In a possible implementation manner, the insert injection mold includes a first state and a second state;

[0047] When the insert injection mold is in the first state, the material strip is clamped between the first mold body and the second mold body, the first groove is connected to the second groove, and the cutting knife part abuts against or has a gap with the to-be-cut section of the material bridge;

[0048] When the insert injection mold is in the second state, the material strip is clamped between the first mold body and the second mold body, the first groove is connected to the second groove, and the cutting knife part passes through the gap of the material bridge, and the gap is formed after the segment to be cut is cut off from the material bridge.

[0049] It is understandable that when the insert injection mold is in the second state, the ejection mechanism completes an ejection in the mold and cuts off the to-be-cut section of the material bridge from the material bridge, and the ejection mechanism is located in the first ejection hole of the first mold body and the second ejection hole of the second mold body.

[0050] In a possible implementation manner, when the insert injection mold is in the first state, the protrusion height of the ejection mechanism relative to the bottom wall of the first groove is a first height;

[0051] When the insert injection mold is in the second state, the protrusion height of the ejection mechanism relative to the bottom wall of the first groove is a second height;

[0052] The first height is smaller than the second height.

[0053] It can be understood that when the insert injection mold switches from the first state to the second state, the ejection mechanism rises relative to the bottom wall of the first groove of the first mold body and completes an ejection action. The cutter portion of the ejection mechanism moves from the first ejection hole of the first mold body to the second ejection hole of the second mold body, thereby cutting off the to-be-cut section of the material bridge from the material bridge, so that the to-be-cut section of the material bridge can be dropped from the waste hole through the second ejection hole.

[0054] In a possible implementation manner, the insert injection mold further includes a third state;

[0055] When the insert injection mold is in the third state, the first groove, the second groove and the third groove are interconnected and cooperate to form an injection cavity, and the metal part and the material bridge connected to the metal part and not cut off by the cutting part are located in the injection cavity.

[0056] At this time, the ejection mechanism completes the secondary ejection in the mold and makes the third groove of the ejection mechanism communicate with the first groove of the first mold body and the second groove of the second mold body to form an injection cavity, wherein the injection cavity can be used to provide space for injection molding and glue pouring, which can have good sealing performance.

[0057] In a possible implementation manner, when the insert injection mold is in the second state, the protruding height of the ejection mechanism relative to the bottom wall of the first groove is a second height;

[0058] When the insert injection mold is in the third state, the protrusion height of the ejection mechanism relative to the bottom wall of the first groove is a third height;

[0059] The second height is smaller than the third height.

[0060] It is understandable that when the insert injection mold switches from the second state to the third state, the ejection mechanism continues to rise relative to the bottom wall of the first groove of the first mold body and completes the secondary ejection action. At least part of the cutter portion of the ejection mechanism moves from the second ejection hole of the second mold body to the waste hole of the second mold body, and part of the packaging portion of the ejection mechanism moves from the first ejection hole of the first mold body to the second ejection hole of the second mold body, so that the third groove of the packaging portion of the ejection mechanism can cooperate with the first groove of the first mold body and the second groove of the second mold body to form an injection cavity.

[0061] In a possible implementation manner, the insert injection mold further includes an ejector pin, the ejector pin is connected to the first mold body and is partially located in the first groove, the ejector pin can rise or fall relative to the bottom wall of the first groove, and an end of the ejector pin away from the first mold body is used to connect with the metal part;

[0062] The moving direction of the ejector pin intersects with the moving direction of the ejection mechanism.

[0063] It can be understood that since the ejection direction of the ejection mechanism and the demolding direction of the insert injection molding structure (i.e., the moving direction of the ejector pin) are inclined, when the ejection process of the ejection mechanism and the demolding process of the insert injection molding structure are carried out simultaneously, the ejection mechanism will gradually separate from the insert injection molding structure, so that the prepared insert injection molding structure can be more smoothly removed from the insert injection mold, and the reliability is better.

[0064] In a second aspect, the present application further provides a method for preparing an insert injection molding structure, the method for preparing an insert injection molding structure comprising:

[0065] Providing a material strip, wherein the material strip comprises a metal piece, a strip body located at the periphery of the metal piece, and a material bridge connected between the metal piece and the strip body, wherein the material bridge comprises a segment to be cut;

[0066] An insert injection mold is provided, wherein the insert injection mold comprises a first mold body, a second mold body and an ejection mechanism, wherein the first mold body comprises a first surface, the first mold body has a first groove, the opening of the first groove is located on the first surface, the second mold body comprises a second surface, the second surface faces the first surface, the second mold body has a second groove, the opening of the second groove is located on the second surface, the opening of the second groove and the opening of the first groove are arranged opposite to each other in the height direction of the insert injection mold, the ejection mechanism is penetrated by the first mold body, the ejection mechanism can rise or fall relative to the bottom wall of the first groove, and the ejection mechanism has a third groove;

[0067] The material strip is clamped between the first mold body and the second mold body, and the metal piece and part of the material bridge are located in a space formed by the first groove and the second groove;

[0068] Driving the ejection mechanism to move toward the second mold body to cut the to-be-cut segment off the material bridge and disconnect the metal piece from the belt body;

[0069] driving the ejection mechanism to move toward the second mold body so that the third groove is connected with the first groove and the second groove and cooperates to form an injection cavity, wherein the material bridge connected to the metal part and not cut off by the ejection mechanism forms a conductive connection segment, and the conductive connection segment and the metal part are located in the injection cavity; and

[0070] Glue is injected into the injection cavity to form an insert injection structure filling the injection cavity, wherein the insert injection structure includes the conductive connection segment, the metal part and the plastic part, the conductive connection segment is connected to the periphery of the metal part, and the plastic part wraps the conductive connection segment and the metal part.

[0071] In a possible implementation manner, the step of clamping the material strip between the first mold body and the second mold body, and positioning the metal piece and a portion of the material bridge in a space formed by the first groove and the second groove communicating with each other includes:

[0072] The material strip is fixed to the first mold body, wherein the first mold body has a first card slot and a second card slot, the first card slot is located at the periphery of the first groove, the opening of the first card slot is located on the first surface, the second card slot communicates with the first groove and the first card slot, the opening of the second card slot is located on the first surface, the strip body is fixed to the first card slot, the material bridge is fixed to the second card slot, and the metal piece is fixed to the first groove;

[0073] The second mold body is molded together with the first mold body so that the metal part and part of the material bridge are located in the connected first groove and the second groove.

[0074] In a possible implementation manner, the insert injection mold further includes an ejector pin, the ejector pin is connected to the first mold body and is partially located in the first groove, the ejector pin can rise or fall relative to the bottom wall of the first groove, and one end of the ejector pin away from the first mold body is connected to the metal part;

[0075] After injecting glue into the injection cavity to form an insert injection structure filling the injection cavity, the insert injection method for preparing the insert injection structure further includes:

[0076] Opening the second mold body from the first mold body;

[0077] The ejector pin is driven to cause the insert molding structure to rise relative to the bottom wall of the first groove, and the ejector mechanism is driven to cause the ejector mechanism to rise relative to the bottom wall of the first groove, so that the ejector mechanism is separated from the insert molding structure, wherein the moving direction of the ejector pin intersects with the moving direction of the ejector mechanism.

[0078] In a third aspect, the present application further provides an insert injection molding structure, wherein the insert injection molding structure is prepared by the preparation method of the insert injection molding structure as described above.

[0079] It is understandable that in the related art, in order to enable the mass production of insert injection molding products, the metal inserts embedded in the plastic are often designed in the form of metal strips and injection molded in the form of strips. After the injection molding is completed, the strips are taken out of the injection mold, and the excess strips are removed through a subsequent cutting process to form insert injection molding products. The insert injection molding products formed by this cutting process will have certain metal connection positions of the strips on the surface of the product. This metal connection position is exposed to the external environment and is easily in contact with external conductive parts to cause a short circuit.

[0080] The insert injection molding structure provided in the embodiment of the present application, by wrapping both the metal part and the conductive connecting segment with the plastic part, can enable the plastic part to completely wrap the conductive connecting segment with conductive properties inside, thereby insulating the conductive connecting segment from the conductor outside the plastic part, effectively avoiding the problem of short circuit caused by contact between the conductive connecting segment and the external conductor, which is beneficial to improving the working performance of the insert injection molding structure and has better reliability.

[0081] In a fourth aspect, the present application further provides a camera module, the camera module comprising:

[0082] A motor base, the motor base comprising a metal piece, a conductive connecting section and a plastic piece, the metal piece having a first through-hole, the conductive connecting section being connected to the periphery of the metal piece, the plastic piece wrapping the metal piece and the conductive connecting section, the plastic piece having a second through-hole, the second through-hole being connected to the first through-hole; and

[0083] A lens passes through the first through-hole and the second through-hole.

[0084] It is understandable that by making the motor base of the motor be prepared by the insert injection molding process, it is beneficial to reduce the height of the motor base of the motor while ensuring the overall strength of the motor, thereby further reducing the overall height of the motor and realizing the overall thinness and miniaturization of the motor. In addition, since electronic devices (such as mobile phones, tablet computers, etc.) using camera modules have ESD (Electro-Static discharge) and EMC (Electromagnetic Compatibility) requirements, it is often necessary to attach conductive cloth to the camera module. However, the present application makes the conductive connecting segment with conductive properties completely wrapped in plastic parts so that the conductive connecting segment will not be exposed. It can not only effectively avoid the abnormal opening of the camera module and the abnormal anti-shake caused by the short circuit of the conductive connecting segment and the conductive cloth, but also help to improve the overall working performance of the camera module and improve the strength of the motor base of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0085] Figure 1 is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0086] Figure 2 yes Figure 1 A structural schematic diagram of a camera module of an electronic device shown;

[0087] Figure 3 A schematic diagram of the structure of a motor base of a camera module in the related art;

[0088] Figure 4a This is a structural schematic diagram of a motor base of a camera module provided in an embodiment of the present application;

[0089] Figure 4b yes Figure 4a A perspective structural diagram of a motor base is shown;

[0090] Figure 5 yes Figure 4a A schematic diagram of the structure of the metal parts and the conductive connecting section of the motor base shown;

[0091] Figure 6 It is a structural schematic diagram of a material strip provided in an embodiment of the present application;

[0092] Figure 7 is a schematic structural diagram of an insert injection mold provided in an embodiment of the present application;

[0093] Figure 8 yes Figure 7 An exploded schematic diagram of the insert injection mold shown;

[0094] Fig. 9 yes Figure 7 A schematic structural diagram of a first mold body of an insert injection mold shown;

[0095] Fig.10 is along Fig. 9 The schematic cross-sectional view obtained by cutting along the cutting line AA shown;

[0096] Fig.11 yes Figure 5 A cross-sectional schematic diagram of a first mold body of the insert injection molding structure shown;

[0097] Fig.12 yes Figure 7 The schematic diagram of the assembly of the first mold body and the material strip shown;

[0098] Fig.13a yes Figure 5 A schematic structural diagram of a second mold body of the insert injection mold at an angle shown;

[0099] Fig.13b yes Figure 5 A schematic structural diagram of the second mold body of the insert injection mold from another angle;

[0100] Fig.14 is along Fig.13a The schematic cross-sectional view obtained by cutting along the cutting line BB shown;

[0101] Fig.15 yes Figure 5 A cross-sectional schematic diagram of a second mold body of the insert injection molding structure shown;

[0102] Fig.16 yes Figure 5 The schematic diagram of the assembly of the ejection mechanism of the insert injection mold and the first mold body shown;

[0103] Fig.17 yes Figure 5 A schematic structural diagram of an ejection mechanism of an insert injection mold at an angle shown;

[0104] Fig.18a yes Figure 5 The schematic diagram of the first state of the assembly of the insert injection mold and the material strip shown;

[0105] Fig.18b is along Fig.18a The schematic cross-sectional view obtained by cutting along the cutting line CC shown;

[0106] Fig.19a yes Figure 5 A schematic diagram of a second state of assembly of the insert injection mold and the material strip shown;

[0107] Fig.19b is along Fig.19a The schematic cross-sectional view obtained by cutting along the cutting line DD shown;

[0108] Fig.20a yes Figure 5 A schematic diagram of the third state of the assembly of the insert injection mold and the material strip shown;

[0109] Fig.20b is along Fig.20a The schematic cross-sectional view obtained by cutting along the cutting line EE shown;

[0110] Fig.21a yes Figure 5 A schematic diagram of a fourth state of assembly of the insert injection mold and the material strip shown;

[0111] Figure 21b is along Fig.20a A schematic cross-sectional view of the section line FF shown;

[0112] Fig. 22 yes Figure 5A schematic diagram of a fifth state of assembly of the insert injection mold and the material strip shown;

[0113] Fig.23a yes Figure 5 A schematic diagram of a sixth state of assembly of the insert injection mold and the material strip shown;

[0114] Figure 23b yes Fig.23a A schematic structural diagram of an insert injection mold at an angle;

[0115] Fig.24 It is a schematic flow chart of a method for preparing an insert injection molding structure provided in an embodiment of the present application. DETAILED DESCRIPTION

[0116] For ease of understanding, the terms involved in the embodiments of the present application are first explained.

[0117] And / or: It is just a way to describe the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0118] Multiple: refers to two or more than two.

[0119] Connection: should be understood in a broad sense. For example, A and B are connected, which can be either direct or indirect through an intermediary.

[0120] The specific implementation of the present application will be clearly described below in conjunction with the accompanying drawings.

[0121] The embodiments of the present application provide an insert injection mold, an insert injection structure, a method for preparing an insert injection structure, a camera module and an electronic device. Insert injection refers to a molding process in which a metal insert is pre-fixed in an appropriate position in an injection mold and then the mold is closed and plastic is injected to form the mold.

[0122] Please refer to Figure 1 and Figure 2 , Figure 1 is a schematic diagram of the structure of an electronic device 400 provided in an embodiment of the present application, Figure 2 yes Figure 1 A structural schematic diagram of a camera module 300 of an electronic device 400 is shown.

[0123] The electronic device 400 may include a frame 410, a display module 420, a back cover 430 and a camera module 300. The display module 420 and the back cover 430 are respectively arranged on opposite sides of the frame 410. The assembled display module 420, the frame 410 and the back cover 430 may form an internal receiving space of the electronic device 400, and the receiving space may accommodate other parts of the electronic device 400, such as a plurality of modules, a plurality of electronic devices and a plurality of structural parts for completing various functions of the electronic device 400.

[0124] The camera module 300 can be completely accommodated inside the accommodation space, or the camera module 300 can be mostly accommodated inside the accommodation space. The camera module 300 can enable the electronic device 400 to realize one or more of the functions of real-time image acquisition, instant video calls, or obtaining three-dimensional information of the object to be measured. It can be used as a front camera to capture static images or dynamic videos in front of the electronic device 400, and can also be used as a rear camera to capture static images or dynamic videos behind the electronic device 400.

[0125] For example, when the electronic device 400 is a mobile phone, the frame 410 may be the middle frame of the mobile phone, and the display module 420 may be a cover plate for displaying visual information such as images, colors, and texts for the user, for example, a display screen. The back cover 430 may be the back cover 430 of the mobile phone, and the back cover 430 may be an integrally formed cover plate or a cover plate formed by splicing multiple parts, which is not limited in the embodiments of the present application.

[0126] It should be noted that Figure 1 and Figure 2 The purpose of the embodiment is only to schematically describe the connection relationship between the frame 410, the display module 420, the back cover 430 and the camera module 300, and it does not specifically limit the connection position, specific structure and quantity of each device. The structure shown in the embodiment of the present application does not constitute a specific limitation on the electronic device 400 and the camera module 300. In other embodiments of the present application, the electronic device 400 and the camera module 300 may include Figure 1 and Figure 2 More or fewer components may be shown, or some components may be combined or separated, or the components may be arranged differently. Figure 1 and Figure 2 The components shown may be implemented in hardware, software or a combination of software and hardware.

[0127] See also Figure 3 , Figure 3It is a structural schematic diagram of the motor base 1 of the camera module in the related art. In the related art, the outer surface of the motor base 1 of the camera module will have a certain metal connection position 2 (also called metal pin) of the material strip, and this metal connection position 2 is exposed to the external environment of the base of the motor 310, and it is easy to contact with the external conductive parts (such as conductive cloth, etc.) arranged outside the motor base 1 to cause a short circuit. Therefore, the motor base of the camera module 300 provided in the embodiment of the present application can effectively avoid the risk of short circuit caused by metal exposure, and the overall electrical reliability of the camera module 300 is better. The camera module 300 provided in the embodiment of the present application will be described below.

[0128] Please refer again Figure 1 and Figure 2 The camera module 300 may include a motor 310 and a lens 320, wherein the motor 310 can drive the lens 320 to move along the axial direction of the camera module 300 to realize the autofocus function of the camera module 300, wherein the axial direction of the camera module 300 is the direction of the central axis of the camera module 300. Alternatively, the motor 310 can drive the lens 320 to move in a translational direction perpendicular to the axial direction of the camera module 300 to realize the anti-shake function of the camera module 300, wherein the axial direction of the camera module 300 is the direction of the central axis of the camera module 300. Exemplarily, the motor 310 may be a piezoelectric motor, a voice coil motor, an SMA (Shape Memory Alloys) motor, a MEMS (Micro Electro Mechanical Systems) motor, or a stepper motor.

[0129] The motor 310 may include a motor housing 3110 and a motor base, wherein the motor base is the insert injection molding structure 200. The motor housing 3110 is connected to the motor base, and the motor housing 3110 and the motor base cooperate to form a storage space for the motor 310, and the storage space can accommodate part of the lens 320. Part of the lens 320 is accommodated in the storage space of the motor 310, and the end of the lens 320 can be protruded relative to the motor 310.

[0130] Please refer to Figure 4a , Figure 4b and Figure 5 , Figure 4a is a structural schematic diagram of a motor base of a camera module 300 provided in an embodiment of the present application, Figure 4b yes Figure 4a The perspective structural diagram of the motor base shown in FIG. Figure 5 yes Figure 4aThe motor base may include a metal member 210 , a conductive connecting segment 220 , and a plastic member 230 .

[0131] The metal part 210 may be the inner core of the motor base (i.e., the insert injection molding structure 200), and may play a role in improving the strength of the motor base. The metal part 210 may be a structural part including a metal material, such as a structural part including a pure metal material, an alloy material, a composite metal material, or the like. The metal part 210 may be rectangular in shape, and the metal part 210 may have a first perforation 2110, and the first perforation 2110 passes through the metal part 210 along the thickness direction of the metal part 210. The first perforation 2110 may be used for other components in the camera module 300 to pass through, such as the lens 320 of the camera module 300. Exemplarily, the material of the metal part 210 may be stainless steel, copper alloy, or the like.

[0132] The conductive connection segment 220 is connected to the periphery of the metal member 210. Specifically, one end of the conductive connection segment 220 is connected to the periphery of the metal member 210, and the other end of the conductive connection segment 220 extends in a direction away from the metal member 210. The conductive connection segment 220 may be a bridge 520 of a section of the material strip 500 left on the metal member 210 after the metal member 210 is cut from the material strip 500. The conductive connection segment 220 has good conductive properties. The number of the conductive connection segments 220 may be one or more. When the number of the conductive connection segments 220 is multiple, the multiple conductive connection segments 220 are spaced apart on the periphery of the metal member 210. For example, as Figure 5 As shown, there are four conductive connection segments 220, of which two are spaced apart on one side of the metal member 210, and the other two are spaced apart on the other side of the metal member 210. The conductive connection segments 220 may be made of stainless steel, copper alloy, or the like.

[0133] The plastic part 230 may be rectangular in shape, and the plastic part 230 wraps the metal part 210 and the conductive connecting section 220, and serves to insulate the metal part 210 and the conductive connecting section 220 from the external conductor. The plastic part 230 may have a second through hole 2310, and the second through hole 2310 penetrates the plastic part 230 along the thickness direction of the plastic part 230. The second through hole 2310 may be used for other components in the camera module 300 to pass through, such as the lens 320 of the camera module 300. The second through hole 2310 of the plastic part 230 is connected to the first through hole 2110 of the metal part 210, and the lens 320 may pass through the first through hole 2110 of the metal part 210 and the second through hole 2310 of the plastic part 230.

[0134] It is understandable that by making the motor base of the motor 310 prepared by the insert injection molding process, it is beneficial to reduce the height of the motor base of the motor 310 on the basis of ensuring the overall strength of the motor 310, thereby further reducing the overall height of the motor 310, and realizing the overall thinness and miniaturization of the motor 310. In addition, since the electronic device 400 (such as a mobile phone, a tablet computer, etc.) using the camera module 300 has ESD (Electro-Static discharge) and EMC (Electromagnetic Compatibility) requirements, it is often necessary to attach a conductive cloth to the camera module 300. However, the present application makes the conductive connecting section 220 with conductive properties completely wrapped in the plastic part 230, so that the conductive connecting section 220 will not be exposed, which can not only effectively avoid the abnormal opening of the camera module 300, abnormal anti-shake and other adverse problems caused by the exposed conductive connecting section 220 and the short circuit with the conductive cloth, but also helps to improve the overall working performance of the camera module 300, and can also improve the strength of the motor base of the motor 310.

[0135] Please refer again Figure 4a and Figure 4b In the embodiment of the present application, the motor base may be an insert injection molding structure 200. The insert injection molding structure 200 provided in the embodiment of the present application may refer to Figure 4a and Figure 4b And the above related description, but the insert injection molding structure 200 provided in the embodiment of the present application is not limited to Figure 4a and Figure 4b The shape of the motor base shown can satisfy the requirements of including a metal part 210, a conductive connection section 220 and a plastic part 230, and the connection relationship between the three satisfies that the conductive connection section 220 is connected to the periphery of the metal part 210, and the structure in which the plastic part 230 completely wraps the conductive connection section 220 and the metal part 210 is within the scope of protection requested by the embodiments of the present application. Exemplarily, the insert injection molding structure 200 can be a holder in the camera module 300. Alternatively, the insert injection molding structure 200 can be a motor base of the motor 310 in the camera module 300. Alternatively, the insert injection molding structure 200 can be a carrier that clamps the lens 320 inside the motor 310 in the camera module 300.

[0136] It is understandable that in the related art, in order to enable the mass production of insert injection molding products, the metal inserts embedded in the plastic are often designed in the form of metal strips and injection molded in the form of strips. After the injection molding is completed, the strips are taken out of the injection mold, and the excess strips are removed through a subsequent cutting process to form insert injection molding products. The insert injection molding products formed by this cutting process will have certain metal connection positions of the strips on the surface of the product. This metal connection position is exposed to the external environment and is easily in contact with external conductive parts to cause a short circuit.

[0137] The insert molding structure 200 provided in the embodiment of the present application, by wrapping both the metal part 210 and the conductive connecting segment 220 with the plastic part 230, can enable the plastic part 230 to completely wrap the conductive connecting segment 220 having conductive properties inside, thereby playing an insulating role in isolating the conductive connecting segment 220 from the conductor outside the plastic part 230, effectively avoiding the problem of short circuit caused by contact between the conductive connecting segment 220 and the external conductor, which is beneficial to improving the working performance of the insert molding structure 200 and having better reliability.

[0138] In the embodiment of the present application, the insert injection structure 200 can be obtained by injecting the material strip 500 in the insert injection mold 100, cutting and then demolding. The specific structures of the material strip 500 and the insert injection mold 100 will be described below.

[0139] See also Figure 6 , Figure 6 is a structural schematic diagram of a material strip 500 provided in an embodiment of the present application. The material strip 500 may include a plurality of sub-sections 530, which are sequentially arranged and interconnected along the length direction of the material strip 500, and each sub-section 530 may be used to prepare an insert injection molding structure 200 as described above. For example, Figure 6 As shown, there are two sub-sections 530 located on both sides of a dotted line, and the two dotted lines separate three sub-sections 530. The material strip 500 may include three sub-sections 530, which are sequentially arranged and interconnected along the length direction of the material strip 500. The three sub-sections 530 may be prepared in the insert injection mold 100 through cutting, injection molding, demoulding and other processes to obtain three insert injection structures 200.

[0140] The structure of the sub-part 530 will be introduced below by taking one sub-part 530 as an example. In the absence of conflict, the description of the structure of one sub-part 530 below can be applied to other sub-parts 530 of the material strip 500. The sub-part 530 may include a strip body 510, a material bridge 520, and a metal part 210. The metal part 210 is the metal part 210 embedded in the plastic part 230 mentioned above.

[0141] The belt body 510 may have a mounting hole 5110 . The mounting hole 5110 may penetrate the belt body 510 along the thickness direction of the belt body 510 . The mounting hole 5110 is used to accommodate the metal piece 210 .

[0142] The metal member 210 may be located in the mounting hole 5110 of the belt body 510, and the edge of the metal member 210 may have a gap with the hole wall of the mounting hole 5110. In other words, the outer size of the metal member 210 is smaller than the hole size of the mounting hole 5110, so that the belt body 510 is located at the periphery of the metal member 210 and surrounds the structural setting of the metal member 210. Exemplarily, the metal member 210 may be rectangular.

[0143] The material bridge 520 is connected between the metal piece 210 and the belt body 510. Specifically, the material bridge 520 is located in the mounting hole 5110 of the belt body 510, one end of the material bridge 520 is connected to the hole wall of the mounting hole 5110, and the other end of the material bridge 520 is connected to the metal piece 210 located in the mounting hole 5110, so that the metal piece 210 located in the mounting hole 5110 of the belt body 510 can have a stable connection performance with the belt body 510. The number of material bridges 520 located in the mounting hole 5110 of the belt body 510 can be selected according to the actual application scenario of the material belt 500.

[0144] For example, Figure 6 As shown, the number of material bridges 520 located in the same mounting hole 5110 can be four. Among the four material bridges 520, two material bridges 520 are connected between one side of the metal part 210 and one side of the mounting hole 5110. Both material bridges 520 extend along the length direction of the material strip 500 and are arranged at intervals in the width direction of the material strip 500. The other two material bridges 520 are connected between the other side of the metal part 210 and the other side of the mounting hole 5110. Both material bridges 520 extend along the length direction of the material strip 500 and are arranged at intervals in the width direction of the material strip 500. Of course, in other embodiments, the number of material bridges 520 can be less than four or more than four. The embodiments of the present application do not have strict requirements on the number, shape, connection position, etc. of the material bridges 520, and only need to be able to connect the belt body 510 and the metal part 210. The description of the material bridges 520 below can be applied to all material bridges 520 of the material strip 500 without conflict.

[0145] Each material bridge 520 may have a to-be-cut segment 5210, which is the portion of the material bridge 520 to be cut in the insert injection mold 100. When the to-be-cut segment 5210 in the material bridge 520 is cut away, the portion of the material bridge 520 that remains connected to the metal part 210 is the conductive connection segment 220 described above.

[0146] In a possible implementation, Figure 6 As shown, each material bridge 520 may include a first connecting surface 5201 and a second connecting surface 5202. The first connecting surface 5201 of the material bridge 520 is the surface of the first mold body 10 of the material bridge 520 facing the insert injection mold 100, and the second connecting surface 5202 of the material bridge 520 is the surface of the second mold body 20 of the material bridge 520 facing the insert injection mold 100. The first connecting surface 5201 of the material bridge 520 and the second connecting surface 5202 of the material bridge 520 are relatively arranged in the thickness direction of the material strip 500.

[0147] In this embodiment, each material bridge 520 may have a cutout 5220, and is formed by being recessed from the first connection surface 5201 of the material bridge 520 to the second connection surface 5202 of the material bridge 520. The cutout 5220 is used to provide a cutting position for the corresponding structure in the insert injection mold 100 (such as the ejection mechanism 30 described below), and can share a part of the cutting force, so that the insert injection mold 100 can cut the material bridge 520. The cross-sectional dimension of the cutout 5220 along the thickness direction of the material strip 500 may be reduced from the first connection surface 5201 to the second connection surface 5202, wherein the reduction trend means that the cross-sectional dimension of the cutout 5220 is generally reduced, including continuous reduction (including uniform reduction and uneven reduction) and discontinuous reduction. Of course, in other embodiments, the cross-sectional dimension of the cutout 5220 along the thickness direction of the material strip 500 may be kept consistent from the first connection surface 5201 to the second connection surface 5202, and there is no strict restriction on this. Exemplarily, the cross-sectional shape of the cutout 5220 may be V-shaped. There may be two cutouts 5220 , which are spaced apart in the length direction of the bridge 520 , and the portion of the bridge 520 between the two cutouts 5220 forms the to-be-cut segment 5210 of the bridge 520 .

[0148] Please refer to Figure 7 and Figure 8 , Figure 7 is a schematic structural diagram of an insert injection mold 100 provided in an embodiment of the present application, Figure 8 yes Figure 7The schematic diagram of the exploded view of the insert injection mold 100 is shown. The insert injection mold 100 may include a first mold body 10, a second mold body 20 and an ejection mechanism 30. The first mold body 10 and the second mold body 20 are arranged relative to each other in the height direction of the insert injection mold 100. The ejection mechanism 30 is arranged in the first mold body 10, and the ejection mechanism 30 can move relative to the first mold body 10 to cut the material strip 500 and cooperate with the first mold body 10 and the second mold body 20 to form an injection cavity (not shown) for injection molding the cut material strip 500. The first mold body 10 and the second mold body 20 can be molded together to complete the process steps of injection molding and cutting the material strip 500. The first mold body 10 and the second mold body 20 can also be separated so that the insert injection structure 200 formed after injection molding and cutting can be demolded from the insert injection mold 100.

[0149] Please refer to Fig. 9 and Fig.10 , Fig. 9 yes Figure 7 The schematic structural diagram of the first mold body 10 of the insert injection mold 100 is shown in FIG. Fig.10 is along Fig. 9 The schematic cross-sectional view is shown along the cutting line AA.

[0150] The first mold body 10 can be used to fix the material strip 500. The first mold body 10 can include a first surface 101 and a third surface 102. The first surface 101 of the first mold body 10 and the third surface 102 of the first mold body 10 are arranged opposite to each other in the height direction of the first mold body 10. The first surface 101 of the first mold body 10 is the surface of the first mold body 10 facing the second mold body 20, and the third surface 102 of the first mold body 10 is the surface of the first mold body 10 facing away from the second mold body 20. The first mold body 10 can have a first groove 11, a first card slot 12, a second card slot 13 and a first ejection hole 14.

[0151] The opening 111 of the first groove 11 is located on the first surface 101 of the first mold body 10, and is recessed from the first surface 101 of the first mold body 10 toward the third surface 102 of the first mold body 10. The first groove 11 can accommodate part of the metal part 210 of the material strip 500, and the first groove 11 can also be used to fix the metal part 210 of the material strip 500. Exemplarily, the shape of the first groove 11 can be rectangular.

[0152] The first card slot 12 is located at the periphery of the first groove 11, and the opening 121 of the first card slot 12 is located at the first surface 101 of the first mold body 10, and is recessed from the first surface 101 of the first mold body 10 to the third surface 102 of the first mold body 10. The first card slot 12 can accommodate a portion of the belt body 510 of the material belt 500, and the first card slot 12 can also be used to fix the belt body 510 of the material belt 500. Exemplarily, the shape of the first card slot 12 can be annular.

[0153] The second card slot 13 is located between the first groove 11 and the first card slot 12, and connects the first groove 11 and the first card slot 12. The opening of the second card slot 13 is located on the first surface 101 of the first mold body 10, and is recessed from the first surface 101 of the first mold body 10 to the direction of the third surface 102 of the first mold body 10. The second card slot 13 can accommodate part of the bridge 520 of the material strip 500, and the second card slot 13 can also be used to fix the bridge 520 of the material strip 500. The number of the second card slots 13 can be the same as the number of the bridge 520 of the material strip 500, that is, one second card slot 13 is used to accommodate and fix one bridge 520. Exemplarily, the shape of the second card slot 13 can be a strip. The number of the second card slots 13 can be four, two second card slots 13 are arranged at intervals on one side of the first groove 11, and two second card slots 13 are arranged at intervals on the other side of the first groove 11. Exemplarily, the depression depth of the second groove 13 relative to the first surface 101 of the first mold body 10 may be the same as the depression depth of the first groove 12 relative to the first surface 101 of the first mold body 10. The depression depth of the second groove 13 relative to the first surface 101 of the first mold body 10 may be less than the depression depth of the first groove 11 relative to the first surface 101 of the first mold body 10.

[0154] It can be understood that by setting the first groove 11, the first card slot 12 and the second card slot 13 in the first mold body 10, the first groove 11 can be used to fix the metal part 210 of the material strip 500, the first card slot 12 can be used to fix the belt body 510 of the material strip 500, and the second card slot 13 can be used to fix the material bridge 520 of the material strip 500, so that the material strip 500 can be firmly fixed to the first mold body 10 through the cooperation of various groove structures in the first mold body 10, and the material strip 500 can be effectively prevented from sliding, falling off and other problems during the operation of the insert injection mold 100, so that the insert injection mold 100 can perform subsequent cutting, injection molding and other processes on the material strip 500, and the reliability is better.

[0155] The first ejection hole 14 extends from the first surface 101 of the first mold body 10 to the third surface 102 of the first mold body 10. The first ejection hole 14 may be a through hole and penetrates the first surface 101 of the first mold body 10 and the third surface 102 of the first mold body 10. The first ejection hole 14 is connected to the first groove 11 and the second slot 13. The first ejection hole 14 may be used for the ejection mechanism 30 to move therein, and the moving direction of the ejection mechanism 30 is the extension direction of the first ejection hole 14.

[0156] It is understandable that by providing the first ejection hole 14, the first ejection hole 14 can be used as a moving channel of the ejection mechanism 30, and provide a movement space for the ejection mechanism 30 to move relative to the first mold body 10. The first ejection hole 14 is provided between the first groove 11 and the second clamping groove 13, so that the ejection mechanism 30 can cut off the material bridge 520 located in the second clamping groove 13 during the ejection process relative to the first mold body 10, so as to separate the metal part 210 located in the first groove 11 from the belt body 510 located in the first clamping groove 12, and effectively realize the cutting function of the ejection mechanism 30.

[0157] in, Fig. 9 and Fig.10 For the sake of convenience, only one first ejection hole 14 is shown, and the other first ejection holes 14 are not shown. However, it should be understood that a first ejection hole 14 is provided between each second card slot 13 for accommodating a material bridge 520 and the first groove 11. In other words, the number of first ejection holes 14 can be the same as the number of second card slots 13, that is, each first ejection hole 14 can connect the first groove 11 and a second card slot 13, and is used for an ejection mechanism 30 to move therein. Exemplarily, the extension directions of multiple first ejection holes 14 located on the same side of the first mold body 10 can be the same. As shown in FIG. Fig.11 As shown, Fig.11 yes Figure 5 The schematic cross-sectional view of the first mold body 10 of the insert injection molding structure 200 is shown. The extension directions of the two first ejection holes 14 located on both sides of the first mold body 10 may intersect and may be mirror-symmetrical about the central axis of the first mold body 10. Of course, in other embodiments, the extension directions of the plurality of first ejection holes 14 are not limited to Fig.11 The direction shown may also be other directions, as long as the extension direction of each first ejection hole 14 is inclined to the demoulding direction of the insert injection structure 200 .

[0158] In the embodiment of the present application, the extension direction of the first ejection hole 14 can be set obliquely with the height direction of the insert injection mold 100. In other words, the extension direction of the first ejection hole 14 is set obliquely with the first surface 101 of the first mold body 10. Under this setting, the ejection mechanism 30 can move along the extension direction of the first ejection hole 14 to achieve inclined ejection. Alternatively, the extension direction of the first ejection hole 14 can also be parallel to the height direction of the insert injection mold 100. In other words, the extension direction of the first ejection hole 14 is set perpendicular to the first surface 101 of the first mold body 10. Under this setting, the ejection mechanism 30 can move along the extension direction of the first ejection hole 14 to achieve vertical ejection. It should be noted that the inclination angle of the first ejection hole 14 relative to the height direction of the insert injection mold 100 can be selected according to the actual application of the insert injection mold 100, and the embodiment of the present application does not impose strict restrictions on this.

[0159] The following description will be made by taking the example that the extending direction of the first ejection hole 14 is inclined with respect to the height direction of the insert injection mold 100 , but it should be understood that the present invention is not limited thereto.

[0160] Please refer to Fig. 9 and Fig.10 The first mold body 10 may further include a first side wall 103, the first side wall 103 is connected between the first surface 101 and the third surface 102, and the extension direction of the first side wall 103 intersects with the extension direction of the second card slot 13. The first ejection hole 14 may include a first hole wall 141 and a second hole wall 142, the first hole wall 141 extends from the first surface 101 of the first mold body 10 to the third surface 102 of the first mold body 10, and the second hole wall 142 extends from the bottom wall of the first groove 11 to the third surface 102 of the first mold body 10. Along the extension direction of the second card slot 13, the first hole wall 141 of the first ejection hole 14 and the second hole wall 142 of the first ejection hole 14 are arranged opposite to each other, and the first hole wall 141 of the first ejection hole 14 is closer to the first side wall 103 of the first mold body 10 relative to the second hole wall 142 of the first ejection hole 14.

[0161] The distance between the first hole wall 141 of the first ejection hole 14 and the first side wall 103 of the first mold body 10 gradually changes along the height direction of the first mold body 10. In other words, the first hole wall 141 of the first ejection hole 14 is inclined relative to the third surface 102 of the first mold body 10.

[0162] The distance between the second hole wall 142 of the first ejection hole 14 and the first side wall 103 of the first mold body 10 gradually changes along the height direction of the first mold body 10, and the extension direction of the second hole wall 142 of the first ejection hole 14 is the same as the extension direction of the first hole wall 141 of the first ejection hole 14. In other words, the second hole wall 142 of the first ejection hole 14 is inclined relative to the third surface 102 of the first mold body 10.

[0163] It can be understood that, since the extension direction of the first hole wall 141 and the extension direction of the second hole wall 142 both intersect with the extension direction of the first side wall 103, the first hole wall 141 and the second hole wall 142 of the first ejection hole 14 are both inclined surfaces. Under this setting, the overall extension direction of the first ejection hole 14 is a direction that is inclined to the height direction of the first mold body 10 (that is, the height direction of the insert injection mold 100), and the first ejection hole 14 is an inclined hole structure setting as a whole. Since the first ejection hole 14 can allow the ejection mechanism 30 to slide therein, the ejection direction of the ejection mechanism 30 can adapt to the extension direction of the first ejection hole 14. In other words, the structural setting of the first ejection hole 14 can make the moving direction of the ejection mechanism 30 an inclined direction intersecting with the extension direction of the first side wall 103 of the first mold body 10, so that the ejection mechanism 30 can achieve inclined ejection, which is convenient for the ejection mechanism 30 to be demolded with the prepared insert injection molding structure 200 during the subsequent ejection process, and has good reliability.

[0164] Please refer to Fig. 9 and Fig.10 , the first ejection hole 14 may include a first sub-hole 143 and a second sub-hole 144, which are sequentially arranged in the height direction of the first mold body 10. An opening 1431 at one end of the first sub-hole 143 is located at the groove bottom wall of the first groove 11, and an opening at the other end of the first sub-hole 143 is located at the third surface 102 of the first mold body 10. The first sub-hole 143 is connected to the first groove 11, and extends from the groove bottom wall of the first groove 11 to the third surface 102 of the first mold body 10. One end of the second sub-hole 144 is connected to the first sub-hole 143, and an opening 1441 at the other end of the second sub-hole 144 is located at the first surface 101 of the first mold body 10. The second sub-hole 144 is connected to the second card groove 13 and the first groove 11, and extends from the groove bottom wall of the first groove 11 to the first surface 101 of the first mold body 10.

[0165] It can be understood that by setting the opening 1431 of the first sub-hole 143 on the bottom wall of the first groove 11, the first ejection hole 14 can be connected to the first groove 11. By setting the opening 1441 of the second sub-hole 144 on the first surface 101 of the first mold body 10 and between the opening 111 of the first groove 11 and the opening of the second card groove 13, the second sub-hole 144 can be connected to the first groove 11 and the second card groove 13, thereby enabling the first ejection hole 14 to be connected to both the first groove 11 and the second card groove 13. Under this setting, during the ejection process of the ejection mechanism 30 relative to the first mold body 10, the ejection mechanism 30 can first cut off the material bridge 520 located in the second card groove 13, so that the metal part 210 located in the first groove 11 and the belt body 510 located in the first card groove 12 are separated. Next. The ejection mechanism 30 can also gradually pass through the first groove 11 during the continuous ejection process, so that the structure on the ejection mechanism 30 (such as the third groove 321 described below) can cooperate with the first groove 11 to form an injection cavity W, ensuring that the partial material bridge 520 connected to the metal part 210 can be completely wrapped in the plastic after injection molding and will not be exposed, thereby improving the electrical reliability of the prepared insert injection molding structure 200.

[0166] In a possible implementation, Fig. 9 As shown, the insert injection mold 100 may further include a first protrusion 41 and a plurality of first pressing needles 42. A first protrusion 41 is disposed on the bottom wall of the first groove 11, and a plurality of first pressing needles 42 are connected to the first mold body 10 at intervals, and a plurality of first pressing needles 42 are disposed on both sides of a first protrusion 41. Each first pressing needle 42 can move relative to the first mold body 10 along the height direction of the insert injection mold 100 and rise or fall relative to the bottom wall of the first groove 11, and the end of each first pressing needle 42 can extend out of the bottom wall of the first groove 11 and contact the metal part 210.

[0167] It is understandable that when the insert injection mold 100 needs to perform injection molding on the cut metal part 210, the first groove 11 of the first mold body 10 will constitute a part of the injection cavity W of the insert injection mold 100. A first protrusion 41 is provided on the bottom wall of the first groove 11, so that when the plastic fills the first groove 11, it can bypass the position of the first protrusion 41 and fill the remaining space in the first groove 11, so as to facilitate shaping the insert injection structure 200 according to the actual application form of the insert injection structure 200. In addition, since the metal part 210 is easily swung up and down by the plastic during the injection molding process of the insert injection mold 100, the actual position of the metal part 210 in the plastic part 230 is greatly different from the ideal position. Therefore, by providing a plurality of first pressing needles 42 and making the plurality of first pressing needles 42 support the metal part 210 from the bottom of the metal part 210, the position of the metal part 210 will not change during injection molding, and the reliability is better.

[0168] In this embodiment, please refer to Fig. 9 and Fig.12 , Fig.12 yes Figure 7 The schematic diagram of the assembly of the first mold body 10 and the material strip 500 is shown.

[0169] When a sub-portion 530 of the material strip 500 is fixed to the first mold body 10, the strip body 510 of the material strip 500 is located in the first slot 12 of the first mold body 10, the material bridge 520 of the material strip 500 is located in the second slot 13 of the first mold body 10 and the first groove 11 of the first mold body 10, and the metal piece 210 of the material strip 500 is located in the first groove 11 of the first mold body 10. At least part of the first protrusion 41 is located in the first through hole 2110 of the metal piece 210, and the plurality of first pressing needles 42 are covered by the metal piece 210. The plurality of first pressing needles 42 can either be in contact with the metal piece 210 or have a gap between the plurality of first pressing needles 42 and the metal piece 210.

[0170] It is understandable that when the material strip 500 is fixed to the first mold body 10, part of the metal part 210 of the material strip 500 and part of the material bridge 520 of the material strip 500 will be located in the first groove 11 of the first mold body 10, and there will be a gap between the metal part 210 and the peripheral side wall of the first groove 11 and the groove bottom wall of the first groove 11, and this gap can provide a certain glue injection space so that the plastic part 230 can completely wrap the metal part 210 after the injection molding is completed. Among them, the peripheral side wall of the first groove 11 refers to the wall surface connected to the groove bottom wall of the first groove 11 and surrounding the groove bottom wall of the first groove 11.

[0171] In the embodiment of the present application, the first mold body 10 can move relative to the second mold body 20 along the height direction of the insert injection mold 100 and approach the second mold body 20, so that the first mold body 10 and the second mold body 20 are molded together. Alternatively, the first mold body 10 can also move relative to the second mold body 20 along the height direction of the insert injection mold 100 and move away from the second mold body 20, so that the first mold body 10 and the second mold body 20 are separated. Of course, in other embodiments, the second mold body 20 can move relative to the first mold body 10 along the height direction of the insert injection mold 100 and approach the first mold body 10, so that the second mold body 20 and the first mold body 10 are molded together. Alternatively, the second mold body 20 can also move relative to the first mold body 10 along the height direction of the insert injection mold 100 and move away from the first mold body 10, so that the second mold body 20 and the first mold body 10 are separated.

[0172] Please refer to Fig.13a , Fig.13b and Fig.14 , Fig.13a yes Figure 5 The schematic structural diagram of the second mold body 20 of the insert injection mold 100 is shown at an angle. Fig.13b yes Figure 5 The schematic structural diagram of the second mold body 20 of the insert injection mold 100 from another angle is shown. Fig.14 is along Fig.13a The schematic cross-sectional view is shown along the cutting line BB.

[0173] The second mold body 20 may include a second surface 201 and a fourth surface 202. The second surface 201 of the second mold body 20 and the fourth surface 202 of the second mold body 20 are arranged opposite to each other in the height direction of the second mold body 20. The second surface 201 of the second mold body 20 is the surface of the second mold body 20 facing the first mold body 10, and the fourth surface 202 of the second mold body 20 is the surface of the second mold body 20 facing away from the first mold body 10. In other words, the second surface 201 of the second mold body 20 faces the first surface 101 of the first mold body 10. The second mold body 20 may have a second groove 21, a second ejection hole 22, and a waste hole 23.

[0174] The opening 211 of the second groove 21 is located on the second surface 201 of the second mold body 20, and is recessed from the second surface 201 of the second mold body 20 to the direction of the fourth surface 202 of the second mold body 20. The opening 211 of the second groove 21 and the opening 111 of the first groove 11 of the first mold body 10 are arranged opposite to each other in the height direction of the insert injection mold 100, and the second groove 21 can accommodate part of the metal parts 210 of the material strip 500. Under this arrangement, when the first mold body 10 and the second mold body 20 are molded together, the first groove 11 of the first mold body 10 and the second groove 21 of the second mold body 20 can cooperate to accommodate the metal parts 210 of the material strip 500. Exemplarily, the shape of the second groove 21 can be rectangular.

[0175] The opening 2231 of the second ejection hole 22 is located on the second surface 201 of the second mold body 20, and the opening 2231 of the second ejection hole 22 and the opening 1441 of the first ejection hole 14 located on the first surface 101 are arranged opposite to each other in the height direction of the insert injection mold 100. The second ejection hole 22 extends from the second surface 201 of the second mold body 20 to the inside of the second mold body 20. The second ejection hole 22 is connected to the second groove 21 and the waste hole 23, and the second ejection hole 22 can be used for the ejection mechanism 30 to move therein, and the moving direction of the ejection mechanism 30 is the extension direction of the second ejection hole 22.

[0176] It is understandable that when the second mold body 20 is molded with the first mold body 10, the second ejection hole 22 can be connected to the first ejection hole 14 of the first mold body 10, and is used to cooperate with the first ejection hole 14 to form a guide channel for the ejection mechanism 30 to move, thereby providing a movement space for the ejection mechanism 30 to continuously eject. The first ejection hole 14 is arranged between the second groove 21 and the waste hole 23, so that the ejection mechanism 30 can eject the cut-off section 5210 of the cut-off material bridge 520 into the waste hole 23 through the second ejection hole 22 during the secondary ejection process relative to the first mold body 10, so that the cut-off section 5210 of the cut-off material bridge 520 falls from the second ejection hole 22 and the waste hole 23, thereby realizing the waste discharge function of the insert injection mold 100.

[0177] in, Fig.13a , Fig.13b and Fig.14For the convenience of illustration, only one second ejection hole 22 and one waste hole 23 are illustrated, and the other second ejection holes 22 and waste holes 23 are not shown. However, it should be understood that a second ejection hole 22 and a waste hole 23 are provided at each position corresponding to a second ejection hole 22 on the second mold body 20. In other words, the number of second ejection holes 22 and waste holes 23 may be the same as the number of first ejection holes 14, that is, each second ejection hole 22 may be connected to the second groove 21 and a waste hole 23, and is used for an ejection mechanism 30 to move therein. Exemplarily, the extension directions of multiple second ejection holes 22 located on the same side of the second mold body 20 may be the same. As shown in FIG. Fig.15 As shown, Fig.15 yes Figure 5 The second mold body 20 of the insert injection molding structure 200 is a cross-sectional schematic diagram. The extension directions of the two second ejection holes 22 located on both sides of the second mold body 20 can intersect and can be mirror-symmetrical about the central axis of the second mold body 20. Of course, in other embodiments, the extension directions of the plurality of second ejection holes 22 are not limited to Fig.15 The direction shown may also be other directions, as long as the extension direction of each second ejection hole 22 is inclined to the demoulding direction of the insert injection structure 200 .

[0178] In the embodiment of the present application, the extension direction of the second ejection hole 22 can be set obliquely with the height direction of the insert injection mold 100. In other words, the extension direction of the second ejection hole 22 is set obliquely with the second surface 201 of the second mold body 20. Under this setting, the ejection mechanism 30 can move along the extension direction of the second ejection hole 22 to achieve inclined ejection. Alternatively, the extension direction of the second ejection hole 22 can also be parallel to the height direction of the insert injection mold 100. In other words, the extension direction of the second ejection hole 22 is set perpendicular to the second surface 201 of the second mold body 20. Under this setting, the ejection mechanism 30 can move along the extension direction of the second ejection hole 22 to achieve vertical ejection. It should be noted that the inclination angle of the second ejection hole 22 relative to the height direction of the insert injection mold 100 can be selected according to the actual application of the insert injection mold 100, and the embodiment of the present application does not impose strict restrictions on this.

[0179] The following description will be made by taking the example that the extending direction of the second ejection hole 22 is inclined with respect to the height direction of the insert injection mold 100 , but it should be understood that the present invention is not limited thereto.

[0180] Please refer to Fig.13a , Fig.13b and Fig.14The second mold body 20 may further include a second side wall 203, the second side wall 203 is connected between the second surface 201 and the fourth surface 202, and the second side wall 203 and the first side wall 103 of the first mold body 10 are located on the same side of the insert injection mold 100. The second ejection hole 22 may include a third hole wall 221 and a fourth hole wall 222, the third hole wall 221 extends from the second surface 201 of the second mold body 20 to the fourth surface 202 of the second mold body 20, and the extension direction of the third hole wall 221 is opposite to the extension direction of the first hole wall 141 of the first ejection hole 14. The fourth hole wall 222 extends from the groove bottom wall of the second groove 21 to the fourth surface 202 of the second mold body 20, and the extension direction of the fourth hole wall 222 is opposite to the extension direction of the second hole wall 142 of the first ejection hole 14. Along the extension direction of the second card slot 13, the third hole wall 221 of the second ejection hole 22 and the fourth hole wall 222 of the second ejection hole 22 are arranged opposite to each other, and the third hole wall 221 of the second ejection hole 22 is close to the second side wall 203 of the second mold body 20 relative to the fourth hole wall 222 of the second ejection hole 22.

[0181] The distance between the third hole wall 221 of the second ejection hole 22 and the second side wall 203 of the second mold body 20 gradually changes along the height direction of the second mold body 20. In other words, the third hole wall 221 of the second ejection hole 22 is inclined relative to the third surface 102 of the second mold body 20.

[0182] The distance between the fourth hole wall 222 of the second ejection hole 22 and the second side wall 203 of the second mold body 20 gradually changes along the height direction of the second mold body 20, and the extension direction of the fourth hole wall 222 of the second ejection hole 22 is the same as the extension direction of the third hole wall 221 of the second ejection hole 22. In other words, the fourth hole wall 222 of the second ejection hole 22 is inclined relative to the third surface 102 of the second mold body 20.

[0183] It can be understood that, since the extension direction of the third hole wall 221 and the extension direction of the fourth hole wall 222 both intersect with the extension direction of the second side wall 203, the third hole wall 221 and the fourth hole wall 222 of the second ejection hole 22 are both inclined surfaces. Under this setting, the overall extension direction of the second ejection hole 22 is a direction that is inclined with respect to the height direction of the second mold body 20 (that is, the height direction of the insert injection mold 100), and the second ejection hole 22 is an inclined hole structure setting as a whole. Since the second ejection hole 22 can allow the ejection mechanism 30 to slide therein, the ejection direction of the ejection mechanism 30 can be adapted to the extension direction of the second ejection hole 22. In other words, the structural setting of the second ejection hole 22 can make the moving direction of the ejection mechanism 30 an inclined direction intersecting with the extension direction of the second side wall 203 of the second mold body 20, so that the ejection mechanism 30 can achieve inclined ejection, which is convenient for the ejection mechanism 30 to be demolded with the prepared insert injection molding structure 200 during the subsequent ejection process, and has good reliability.

[0184] It should be noted that the extending direction of the first ejection hole 14 and the extending direction of the second ejection hole 22 are the same, and both are inclined relative to the height direction of the insert injection mold 100 .

[0185] Please refer to Fig.13a , Fig.13b and Fig.14 The second ejection hole 22 may include a third sub-hole 223 and a fourth sub-hole 224, which are sequentially arranged in the height direction of the second mold body 20. An opening 2231 at one end of the third sub-hole 223 is located on the second surface 201 of the second mold body 20, and an opening 2231 at one end of the third sub-hole 223 is arranged opposite to an opening 1441 at the other end of the second sub-hole 144. The other end of the third sub-hole 223 is connected to the fourth sub-hole 224, and the third sub-hole 223 is also connected to the second groove 21.

[0186] The opening 2241 of one end of the fourth sub-hole 224 is located at the bottom wall of the second groove 21, and the other end of the fourth sub-hole 224 is connected to the waste hole 23. The fourth sub-hole 224 is connected to the second groove 21 and extends from the bottom wall of the second groove 21 to the inside of the second mold body 20.

[0187] It can be understood that by setting the opening 2241 of the fourth sub-hole 224 on the bottom wall of the second groove 21, the second ejection hole 22 can be connected with the second groove 21. By setting the opening 2231 of the third sub-hole 223 on the second surface 201 of the second mold body 20 and connecting with the opening 211 of the second groove 21, the third sub-hole 223 can be connected with the second groove 21, thereby enabling the second ejection hole 22 to be connected with the second groove 21. Under this setting, after the ejection mechanism 30 cuts off the material bridge 520 in the second card groove 13, the metal part 210 in the first groove 11 and the belt body 510 in the first card groove 12 are separated. The ejection mechanism 30 can also perform secondary ejection and enter the second ejection hole 22 through the first ejection hole 14, so that the structure on the ejection mechanism 30 (such as the third groove 321 described below) can cooperate with the first groove 11 and the second groove 21 to form the injection cavity W, ensuring that the part of the material bridge 520 connected to the metal part 210 can be completely wrapped in the plastic after the injection molding is completed without being exposed, thereby improving the electrical reliability of the prepared insert injection molding structure 200.

[0188] In an embodiment of the present application, one end of the waste hole 23 is connected to the second ejection hole 22, and the opening of the other end of the waste hole 23 is located on the fourth surface 202 of the second mold body 20. The waste hole 23 can receive the to-be-cut segment 5210 of the material bridge 520 cut and ejected by the ejection mechanism 30, and make the to-be-cut segment 5210 of the cut material bridge 520 fall into the waste box located outside the insert injection mold 100.

[0189] In a possible implementation, Fig.13b As shown, the insert injection mold 100 may also include a third protrusion 43 and a plurality of second pressing needles 44. A third protrusion 43 is arranged on the groove bottom wall of the second groove 21, and a third protrusion 43 and a first protrusion 41 are arranged opposite to each other in the height direction of the insert injection mold 100. A plurality of second pressing needles 44 are connected to the second mold body 20 at intervals, and a plurality of second pressing needles 44 are arranged on both sides of a third protrusion 43, and a second pressing needle 44 can be arranged opposite to a first pressing needle 42 in the height direction of the insert injection mold 100. Each second pressing needle 44 can move relative to the second mold body 20 along the height direction of the insert injection mold 100 and rise or fall relative to the groove bottom wall of the second groove 21, and the end of each second pressing needle 44 can extend out of the groove bottom wall of the second groove 21 and contact the metal part 210. When the second mold body 20 is molded with the first mold body 10 , the third protrusion 43 disposed on the second groove 21 may contact the first protrusion 41 disposed on the first groove 11 .

[0190] It is understandable that when the insert injection mold 100 needs to perform injection molding on the cut metal part 210, the second groove 21 of the second mold body 20 will constitute a part of the injection cavity W of the insert injection mold 100. A third protrusion 43 is provided on the bottom wall of the second groove 21, so that when the plastic fills the second groove 21, it can bypass the position of the third protrusion 43 and fill the remaining space in the second groove 21, so as to facilitate shaping the insert injection structure 200 according to the actual application form of the insert injection structure 200. In addition, since the metal part 210 is easily swung up and down by the plastic during the injection molding process of the insert injection mold 100, the actual position of the metal part 210 in the plastic part 230 is greatly different from the ideal position. Therefore, by providing a plurality of second pressing needles 44 and making the plurality of second pressing needles 44 support the metal part 210 from above the metal part 210, the position of the metal part 210 will not change during injection molding, and the reliability is better.

[0191] In this embodiment, when the second mold body 20 is molded with the first mold body 10, there will be a gap between the metal part 210 and the peripheral side wall of the second groove 21 and the groove bottom wall of the second groove 21, and this gap can provide a certain glue injection space so that the plastic part 230 can completely wrap the metal part 210 after the injection molding is completed. Among them, the peripheral side wall of the second groove 21 refers to the wall surface connected to the groove bottom wall of the second groove 21 and surrounding the groove bottom wall of the second groove 21. The multiple second pressing needles 44 can either contact with the metal part 210, or the multiple second pressing needles 44 can also have a gap with the metal part 210.

[0192] Please refer to Fig.14 , Fig.16 and Fig.17 , Fig.16 yes Figure 5 The schematic diagram of the assembly of the ejection mechanism 30 and the first mold body 10 of the insert injection mold 100 is shown in FIG. Fig.17 yes Figure 5 The schematic diagram of the structure of the ejection mechanism 30 of the insert injection mold 100 is shown at an angle. Fig.16 and Fig.17 For the convenience of illustration, only one ejection mechanism 30 is shown, and the other ejection mechanisms 30 are not shown. However, it should be understood that each material bridge 520 of the material strip 500 may correspond to one ejection mechanism 30. In other words, the number of ejection mechanisms 30 may be the same as the number of material bridges 520, that is, each ejection mechanism 30 may be used to cut one material bridge 520. Exemplarily, the extension directions of the multiple ejection mechanisms 30 located on the same side of the first mold body 10 may be the same. The extension directions of the two ejection mechanisms 30 located on both sides of the first mold body 10 may intersect, and may be mirror-symmetrical about the central axis of the first mold body 10.

[0193] The ejection mechanism 30 is provided in the first ejection hole 14 of the first mold body 10. The ejection mechanism 30 can move in the first ejection hole 14 along the extension direction of the first ejection hole 14 and in the second ejection hole 22 along the extension direction of the second ejection hole 22, and rise relative to the groove bottom wall of the first groove 11 of the first mold body 10 to realize the ejection movement of the ejection mechanism 30. Among them, the ejection mechanism 30 rises relative to the groove bottom wall of the first groove 11 of the first mold body 10, which means that the protruding height of the ejection mechanism 30 relative to the groove bottom wall of the first groove 11 of the first mold body 10 gradually increases. Alternatively, the ejection mechanism 30 can move in the first ejection hole 14 along the extension direction of the first ejection hole 14 and in the second ejection hole 22 along the extension direction of the second ejection hole 22, and descend relative to the groove bottom wall of the first groove 11 of the first mold body 10 to realize the recovery movement of the ejection mechanism 30. The ejection mechanism 30 descends relative to the bottom wall of the first groove 11 of the first mold body 10 , which means that the protruding height of the ejection mechanism 30 relative to the bottom wall of the first groove 11 of the first mold body 10 gradually decreases.

[0194] The ejection mechanism 30 may include a cutter portion 31 and a packaging portion 32 connected to each other. The packaging portion 32 of the ejection mechanism 30 and the cutter portion 31 of the ejection mechanism 30 are sequentially arranged in the extension direction of the ejection mechanism 30. The cutter portion 31 of the ejection mechanism 30 is a portion of the ejection mechanism 30 relatively close to the second mold body 20, and the packaging portion 32 of the ejection mechanism 30 is a portion of the ejection mechanism 30 relatively far from the second mold body 20. The cutter portion 31 is used to cut the material bridge 520 of the material strip 500 to disconnect the metal part 210 of the material strip 500 from the belt body 510 of the material strip 500. The packaging part 32 has a third groove 321, which is used to communicate with the first groove 11 and the second groove 21 and cooperate to form an injection cavity W, so that the metal part 210 and the material bridge 520 connected to the metal part 210 and not cut off by the cutting part 31 are located in the injection cavity W, wherein the material bridge 520 connected to the metal part 210 and not cut off by the cutting part 31 is the conductive connecting segment 220 mentioned above.

[0195] Specifically, the packaging part 32 may include a first side surface 322, a second side surface 323, a third side surface 324 and a fourth side surface 325. The first side surface 322 and the second side surface 323 are arranged opposite to each other, and the third side surface 324 and the fourth side surface 325 are arranged opposite to each other and connected between the first side surface 322 and the second side surface 323. Among them, the first side surface 322 faces the first hole wall 141 of the first ejection hole 14, and the second side surface 323 faces the second hole wall 142 of the first ejection hole 14. The opening of the third groove 321 can be located at the second side surface 323 of the packaging part 32, and extend from the second side surface 323 of the packaging part 32 to the direction of the first side surface 322 of the packaging part 32. The third groove 321 can also penetrate the third side surface 324 and the fourth side surface 325 of the packaging part 32. As a result, it is convenient for the third groove 321 of the packaging part 32 to communicate with the first groove 11 of the first mold body 10 and the second groove 21 of the second mold body 20 and cooperate to form the injection cavity W.

[0196] It can be understood that, since the ejection mechanism 30 can rise relative to the bottom wall of the first groove 11, the ejection mechanism 30 can actually realize the ejection movement relative to the first mold body 10. In the ejection process of the ejection mechanism 30 relative to the first mold body 10, the cutter portion 31 of the ejection mechanism 30 will contact the material bridge 520 of the material strip 500 in advance. Since the cutter portion 31 of the ejection mechanism 30 has a certain width, during the continuous ejection process of the ejection mechanism 30, the cutter portion 31 of the ejection mechanism 30 will cut off part of the material bridge 520 of the material strip 500 that is in contact with it from the material bridge 520 through the ejection action. At this time, since part of the material bridge 520 of the material strip 500 is cut off, the belt body 510 of the material strip 500 will be disconnected from the metal part 210 of the material strip 500, and a section of the material bridge 520 of the material strip 500 that has not been cut off will remain on the metal part 210 of the material strip 500.

[0197] When the cutter portion 31 of the ejection mechanism 30 completes cutting of the material bridge 520 of the material strip 500, the ejection mechanism 30 can then rise relative to the bottom wall of the first groove 11, thereby achieving a secondary ejection movement of the ejection mechanism 30 relative to the first mold body 10. After the secondary ejection movement of the ejection mechanism 30 is completed, the third groove 321 of the packaging portion 32 can be connected to the first groove 11 of the first mold body 10 and the second groove 21 of the second mold body 20 to cooperate to form the injection cavity W of the insert injection mold 100. Under this setting, the metal part 210 and the material bridge 520 connected to the metal part 210 and not cut off by the cutter part 31 will both be located in the injection cavity W, so that when the insert injection mold 100 is injecting the injection cavity W, the plastic can fill the injection cavity W, thereby completely wrapping the metal part 210 and the material bridge 520 connected to the metal part 210 and not cut off by the cutter part 31, so that in the finished insert injection structure 200 produced by the insert injection mold 100, the metal part 210 and the material bridge 520 connected to the metal part 210 and not cut off by the cutter part 31 will both be located inside the plastic, effectively avoiding the risk of short circuit caused by the exposure of the metal insert, and having better reliability.

[0198] In addition, compared with the related art, after the material strip is injected into the mold, the material strip must be removed from the mold, and the excess material strip must be cut off through a subsequent cutting process to form an insert injection molding product. In the technical solution of the present application, since the insert injection mold 100 can integrate the two functions of cutting and injection molding, the cutting of the material strip 500 and the cross-section sealing of the metal insert can be achieved only through the insert injection mold 100 itself, thereby saving the time required for the production of insert injection molding products and improving the working efficiency of the insert injection mold 100.

[0199] Moreover, in the related art, since the material strip is first injection molded, and then the injected material strip is taken out of the mold and cut, in order to avoid problems such as adhesive deformation and poor cross-section quality caused by cutting, only metal is often cut without cutting plastic, resulting in a certain amount of metal connection positions on the outer surface of the insert injection molded product, which may easily cause the risk of short circuit of the insert injection molded product. In the technical solution of the present application, since the material strip 500 is first cut and then the cut cross section is sealed with glue, the cut cross section can be completely wrapped by plastic, so that the outer surface of the prepared insert injection molded structure 200 will not have exposed conductive pins, which effectively reduces the production cost of the insert injection molded structure 200, improves production efficiency, and prevents the risk of short circuit of the prepared insert injection molded structure 200.

[0200] Based on the above description, it should be understood that during the ejection process of the ejection mechanism 30 relative to the first mold body 10, the processes of cutting the material strip 500, sealing the cut cross-section, and demolding the insert injection molding structure 200 formed after the injection molding can be completed in sequence.

[0201] In an embodiment of the present application, the insert injection mold 100 may include a first state, a second state, a third state, a fourth state, a fifth state, and a sixth state. Among them, the first state of the insert injection mold 100 may be a mold closing state in which the material strip 500 of the insert injection mold 100 is assembled with the first mold body 10, and the first mold body 10 and the second mold body 20 are pressed together. The second state of the insert injection mold 100 may be a state in which the ejection mechanism 30 of the insert injection mold 100 performs a primary ejection in the mold and completes the in-mold cutting and blanking. The third state of the insert injection mold 100 may be a state in which the ejection mechanism 30 of the insert injection mold 100 performs a secondary ejection in the mold and forms an injection cavity W. The fourth state of the insert injection mold 100 may be a state in which the insert injection mold 100 completes injection packaging. The fifth state of the insert injection mold 100 may be a state in which the insert injection mold 100 is opened and the first mold body 10 and the second mold body 20 are separated. The sixth state of the insert injection mold 100 may be a state where the insert injection structure 200 is ejected and demolded, and the insert injection structure 200 is separated from the ejection mechanism 30. Each state of the insert injection mold 100 will be described in detail below.

[0202] Please refer to Fig.18a and Fig.18b , Fig.18a yes Figure 5 The schematic diagram of the first state of the assembly of the insert injection mold 100 and the material strip 500 is shown in FIG. Fig.18b is along Fig.18a The schematic cross-sectional view is shown along the cutting line CC.

[0203] When the insert injection mold 100 is in the first state, the strip 500 is fixed to the first mold body 10, and the second mold body 20 is molded with the first mold body 10 and the strip 500 is sandwiched between the second mold body 20 and the first mold body 10. At this time, the first groove 11 of the first mold body 10 is connected with the second groove 21 of the second mold body 20. The strip body 510 of the strip 500 is located in the first slot 12 of the first mold body 10 and abuts against the second mold body 20. A part of the bridge 520 of the strip 500 is located in the second slot 13 of the first mold body 10 and abuts against the second mold body 20, and another part of the bridge 520 of the strip 500 is located in the space formed by the communication between the first groove 11 and the second groove 21. The metal part 210 of the strip 500 is located in the space formed by the communication between the first groove 11 and the second groove 21. The ejection mechanism 30 is located in the first ejection hole 14 of the first mold body 10 and below the bridge 520 of the strip 500. The protruding height of the ejection mechanism 30 relative to the groove bottom wall of the first groove 11 is a first height H1. One side of the cutter portion 31 of the ejection mechanism 30 is arranged opposite to a cutout 5220 of the material bridge 520, and the other side of the cutter portion 31 of the ejection mechanism 30 is arranged opposite to another cutout 5220 of the material bridge 520. Since the portion between the two cutouts 5220 in the material bridge 520 can form a section 5210 to be cut of the material bridge 520, the cutter portion 31 of the ejection mechanism 30 is arranged opposite to the section 5210 to be cut of the material bridge 520. The cutter portion 31 of the ejection mechanism 30 and the section 5210 to be cut of the material bridge 520 can be in contact with each other, or there can be a gap between the cutter portion 31 of the ejection mechanism 30 and the section 5210 to be cut of the material bridge 520.

[0204] Please refer to Fig.19a and Fig.19b , Fig.19a yes Figure 5 The second state schematic diagram of the insert injection mold 100 and the material strip 500 is shown, Fig.19b is along Fig.19a The schematic cross-sectional view is shown along the cutting line DD.

[0205] When the insert injection mold 100 is in the second state, the same contents as those in the first state are not repeated here, and the difference from the first state is that. At this time, the ejection mechanism 30 completes one ejection in the mold and cuts off the to-be-cut segment 5210 of the material bridge 520 from the material bridge 520, and the ejection mechanism 30 is located in the first ejection hole 14 of the first mold body 10 and the second ejection hole 22 of the second mold body 20. Specifically, the cutter portion 31 of the ejection mechanism 30 can pass through the notch 5230 of the material bridge 520 and extend into the second ejection hole 22 of the second mold body 20, and the notch 5230 is formed after the to-be-cut segment 5210 of the material bridge 520 is cut off from the material bridge 520. The protruding height of the ejection mechanism 30 relative to the bottom wall of the first groove 11 is the second height H2, and the second height H2 is greater than the first height H1.

[0206] It is understandable that when the insert injection mold 100 switches from the first state to the second state, the ejection mechanism 30 rises relative to the bottom wall of the first groove 11 of the first mold body 10 and completes an ejection action. The cutter portion 31 of the ejection mechanism 30 moves from the first ejection hole 14 of the first mold body 10 to the second ejection hole 22 of the second mold body 20, thereby cutting off the to-be-cut section 5210 of the material bridge 520 from the material bridge 520, so that the to-be-cut section 5210 of the material bridge 520 can be dropped from the waste hole 23 through the second ejection hole 22.

[0207] Please refer to Fig.20a and Fig.20b , Fig.20a yes Figure 5 The third state schematic diagram of the assembly of the insert injection mold 100 and the material strip 500 is shown in FIG. Fig.20b is along Fig.20a The schematic cross-sectional view is shown along the cutting line EE.

[0208] When the insert injection mold 100 is in the third state, the same contents as those in the second state are not repeated here, and the difference from the second state is that. At this time, the ejection mechanism 30 completes the secondary ejection in the mold and makes the third groove 321 of the ejection mechanism 30 communicate with the first groove 11 of the first mold body 10 and the second groove 21 of the second mold body 20 and cooperate to form an injection cavity W, wherein the injection cavity W can be used to provide a space for injection molding and glue pouring, which can have good sealing performance. At this time, the metal part 210 and the material bridge 520 (i.e., the conductive connection section 220) connected to the metal part 210 and not cut off by the cutter part 31 are located in the injection cavity W. The ejection mechanism 30 is located in the first ejection hole 14 of the first mold body 10, the second ejection hole 22 of the second mold body 20, and the waste hole 23 of the second mold body 20. Specifically, the cutter portion 31 of the ejection mechanism 30 can pass through the second ejection hole 22 of the second mold body 20 and extend into the waste hole 23 of the second mold body 20, and the packaging portion 32 of the ejection mechanism 30 can be located in the first ejection hole 14 of the first mold body 10 and the second ejection hole 22 of the second mold body 20. The protruding height of the ejection mechanism 30 relative to the bottom wall of the first groove 11 is a third height H3, and the third height H3 is greater than the second height H2.

[0209] It is understandable that when the insert injection mold 100 switches from the second state to the third state, the ejection mechanism 30 continues to rise relative to the bottom wall of the first groove 11 of the first mold body 10 and completes the secondary ejection action. At least part of the cutter portion 31 of the ejection mechanism 30 moves from the second ejection hole 22 of the second mold body 20 to the waste hole 23 of the second mold body 20, and part of the packaging portion 32 of the ejection mechanism 30 moves from the first ejection hole 14 of the first mold body 10 to the second ejection hole 22 of the second mold body 20, so that the third groove 321 of the packaging portion 32 of the ejection mechanism 30 can cooperate with the first groove 11 of the first mold body 10 and the second groove 21 of the second mold body 20 to form the injection cavity W.

[0210] Please refer to Fig.21a and Figure 21b , Fig.21a yes Figure 5 The fourth state schematic diagram of the assembly of the insert injection mold 100 and the material strip 500 is shown in FIG. Figure 21b is along Fig.20a The schematic cross-sectional view is shown along the cutting line FF.

[0211] When the insert injection mold 100 is in the fourth state, the same contents as those in the third state are not repeated here, and the difference from the third state is that at this time, the insert injection mold 100 has completed the process of injecting plastic into the injection cavity W, and the plastic completely wraps the metal part 210 and the cross section of the part of the material bridge 520 (i.e., the conductive connection section 220) connected to the metal part 210, thereby forming the insert injection structure 200 filling the injection cavity W. Exemplarily, the insert injection mold 100 can inject plastic into the injection cavity W through a point gate or a side gate.

[0212] It can be understood that when the insert injection mold 100 is switched from the third state to the fourth state, the injection cavity W is filled with colloid, and the colloid can completely wrap the cross-section of the metal part 210 and the part of the material bridge 520 (i.e., the conductive connecting section 220) connected to the metal part 210, so that the cross-section of the material bridge 520 after cutting can be completely wrapped by the plastic, so that the outer surface of the prepared insert injection structure 200 will not have exposed conductive pins, which effectively reduces the production cost of the insert injection structure 200, improves production efficiency, and prevents the risk of short circuit in the prepared insert injection structure 200.

[0213] See also Fig. 22 , Fig. 22 yes Figure 5 The fifth state schematic diagram of the assembly of the insert injection mold 100 and the material strip 500 is shown. Fig. 22 For the convenience of illustration, the first mold body 10 is not shown.

[0214] When the insert injection mold 100 is in the fifth state, the same contents as those in the fourth state are not repeated here, and the difference from the fourth state is that at this time, the first mold body 10 and the second mold body 20 are separated, and the insert injection mold 100 is in an open mold state. The insert injection structure 200 is fixed to the first mold body 10, and is still in an unseparated combination state with the ejection mechanism 30.

[0215] Please refer to Fig.23a and Figure 23b , Fig.23a yes Figure 5 The sixth state schematic diagram of the assembly of the insert injection mold 100 and the material strip 500 is shown in FIG. Figure 23b yes Fig.23a A schematic structural diagram of an insert injection mold 100 at an angle. Fig.23a and Figure 23b For the convenience of illustration, the first mold body 10 is not shown.

[0216] In an embodiment of the present application, the insert injection mold 100 may further include an ejector pin 50, which is connected to the first mold body 10 and partially located in the first groove 11. The ejector pin 50 can rise or fall relative to the bottom wall of the first groove 11, and one end of the ejector pin 50 away from the first mold body 10 is used to connect with the insert injection structure 200, and the moving direction of the ejector pin 50 intersects with the moving direction of the ejection mechanism 30. Among them, the moving direction of the ejector pin 50 can be parallel to the height direction of the insert injection mold 100, and the moving direction of the ejection mechanism 30 can be inclined relative to the height direction of the insert injection mold 100. Exemplarily, the number of ejector pins 50 can be one or more. When the number of ejector pins 50 is multiple, multiple ejector pins 50 can be arranged at intervals. For example, the number of ejector pins 50 can be four, and the four ejector pins 50 are sequentially arranged at the four corners of the first groove 11. The embodiment of the present application does not impose strict restrictions on the number, setting position and shape of the ejector pins.

[0217] When the insert injection mold 100 is in the sixth state, the same contents as those in the fifth state are not repeated here, and the difference from the fifth state is that at this time, the ejection mechanism 30 completes three ejection processes, and the insert injection structure 200 is ejected by the ejector pin 50 (not shown) connected to the first mold body 10 and demolded from the first mold body 10. The insert injection structure 200 is separated from the ejection mechanism 30. The protruding height of the ejection mechanism 30 relative to the bottom wall of the first groove 11 is the fourth height, which is greater than the third height H3.

[0218] It is understandable that when the insert injection mold 100 switches from the fifth state to the sixth state, the ejection mechanism 30 continues to rise relative to the bottom wall of the first groove 11 of the first mold body 10, and completes three ejection actions. Since the ejection direction of the ejection mechanism 30 is inclined to the demoulding direction of the insert injection structure 200 (i.e., the moving direction of the ejector 50), when the ejection process of the ejection mechanism 30 and the demoulding process of the insert injection structure 200 are carried out simultaneously, the ejection mechanism 30 will gradually separate from the insert injection structure 200, so that the prepared insert injection structure 200 can be more smoothly removed from the insert injection mold 100, and the reliability is better.

[0219] When the insert injection mold 100 gradually switches from the first state to the sixth state, the insert injection mold 100 completes the preparation of one insert injection structure 200. At this time, the insert injection mold 100 can be reset to the first state and repeat the above state for the next sub-section 530 of the material strip 500, and the cycle is repeated to complete the preparation of multiple insert injection structures 200.

[0220] See also Fig.24 , Fig.241 is a flow chart of a method for preparing an insert injection molding structure 200 provided in an embodiment of the present application. The embodiment of the present application also provides a method for preparing an insert injection molding structure 200. For details about the material strip 500, the insert injection molding structure 200 and the insert injection molding mold 100 involved in the preparation method, please refer to Figure 1-23b And the above description will not be repeated here. Figure 1-23b The material strip 500, the insert molding structure 200 and the insert molding mold 100 are further described as an example. In the absence of conflict, these descriptions can be applied to Figure 1-23b The insert molding structure 200 and the insert molding mold 100 are shown.

[0221] See also Figure 1-Figure 24 The preparation method of the insert injection molding structure 200 may at least include steps S100, S200, S300, S400, S500, and S600, which are described in detail as follows:

[0222] S100 : providing a material strip 500 , wherein the material strip 500 comprises a metal piece 210 , a strip body 510 located outside the metal piece 210 , and a material bridge 520 connected between the metal piece 210 and the strip body 510 , wherein the material bridge 520 comprises a to-be-cut segment 5210 .

[0223] S200: Provide an insert injection mold 100, wherein the insert injection mold 100 includes a first mold body 10, a second mold body 20 and an ejection mechanism 30, the first mold body 10 includes a first surface 101, the first mold body 10 has a first groove 11, and the opening 111 of the first groove 11 is located on the first surface 101, the second mold body 20 includes a second surface 201, the second surface 201 faces the first surface 101, the second mold body 20 has a second groove 21, the opening 211 of the second groove 21 is located on the second surface 201, the opening 211 of the second groove 21 and the opening 111 of the first groove 11 are arranged opposite to each other in the height direction of the insert injection mold 100, the ejection mechanism 30 is penetrated by the first mold body 10, the ejection mechanism 30 can rise or fall relative to the bottom wall of the first groove 11, and the ejection mechanism 30 has a third groove 321.

[0224] S300 : sandwiching the material strip 500 between the first mold body 10 and the second mold body 20 , and positioning the metal piece 210 and a portion of the material bridge 520 in a space formed by the first groove 11 and the second groove 21 .

[0225] In this step, sandwiching the material strip 500 between the first mold body 10 and the second mold body 20, and positioning the metal piece 210 and a portion of the material bridge 520 in a space formed by the first groove 11 and the second groove 21 may include:

[0226] The first step: fix the material strip 500 to the first mold body 10, wherein the first mold body 10 has a first card slot 12 and a second card slot 13, the first card slot 12 is located at the periphery of the first groove 11, the opening 121 of the first card slot 12 is located on the first surface 101, the second card slot 13 connects the first groove 11 and the first card slot 12, the opening of the second card slot 13 is located on the first surface 101, the belt body 510 of the material strip 500 is fixed to the first card slot 12, the material bridge 520 of the material strip 500 is fixed to the second card slot 13, and the metal part 210 of the material strip 500 is fixed to the first groove 11.

[0227] Step 2: The second mold body 20 is molded together with the first mold body 10 so that the metal part 210 and part of the material bridge 520 are located in the space formed by the first groove 11 and the second groove 21 being connected.

[0228] S400 : driving the ejection mechanism 30 to move toward the direction close to the second mold body 20 , so as to cut the to-be-cut segment 5210 off the material bridge 520 and disconnect the metal piece 210 from the belt body 510 .

[0229] S500: Drive the ejection mechanism 30 to move toward the direction close to the second mold body 20, so that the third groove 321 is connected with the first groove 11 and the second groove 21 and cooperates to form an injection cavity W, wherein the material bridge 520 connected to the metal part 210 and not cut off by the ejection mechanism 30 forms a conductive connecting segment 220, and the conductive connecting segment 220 and the metal part 210 are located in the injection cavity W.

[0230] S600: Injecting glue into the injection cavity W to form an insert injection structure 200 filling the injection cavity W, wherein the insert injection structure 200 includes a conductive connection segment 220, a metal part 210 and a plastic part 230, the conductive connection segment 220 is connected to the periphery of the metal part 210, and the plastic part 230 wraps the conductive connection segment 220 and the metal part 210.

[0231] It is understandable that, since the ejection mechanism 30 can rise relative to the bottom wall of the first groove 11, the ejection mechanism 30 can actually realize the ejection movement relative to the first mold body 10. In the ejection process of the ejection mechanism 30 relative to the first mold body 10, the ejection mechanism 30 will contact the material bridge 520 of the material strip 500 in advance. Since the ejection mechanism 30 has a certain width, during the continuous ejection process of the ejection mechanism 30, the ejection mechanism 30 will cut off part of the material bridge 520 of the material strip 500 that it contacts from the material bridge 520 through the ejection action. At this time, since part of the material bridge 520 of the material strip 500 is cut off, the belt body 510 of the material strip 500 will be disconnected from the metal part 210 of the material strip 500, and a section of the material bridge 520 of the material strip 500 that has not been cut off will remain on the metal part 210 of the material strip 500.

[0232] When the ejection mechanism 30 completes cutting of the material bridge 520 of the material strip 500, the ejection mechanism 30 can then rise relative to the bottom wall of the first groove 11, thereby realizing the secondary ejection movement of the ejection mechanism 30 relative to the first mold body 10. After the secondary ejection movement of the ejection mechanism 30 is completed, the third groove 321 of the ejection mechanism 30 can be connected with the first groove 11 of the first mold body 10 and the second groove 21 of the second mold body 20 to cooperate to form the injection cavity W of the insert injection mold 100. Under this setting, the metal part 210 and the material bridge 520 connected to the metal part 210 and not cut off by the cutting part 31 will both be located in the injection cavity W, so that when the insert injection mold 100 is injecting the injection cavity W, the plastic can fill the injection cavity W, thereby completely wrapping the metal part 210 and the material bridge 520 connected to the metal part 210 and not cut off by the ejection mechanism 30, so that in the finished insert injection structure 200 produced by the insert injection mold 100, the metal part 210 and the material bridge 520 connected to the metal part 210 and not cut off by the ejection mechanism 30 will both be located inside the plastic, effectively avoiding the risk of short circuit caused by the exposure of the metal insert, and having better reliability.

[0233] In an embodiment of the present application, the insert injection mold 100 may further include a ejector pin 50, which is connected to the first mold body 10 and partially located in the first groove 11. The ejector pin 50 can rise or fall relative to the bottom wall of the first groove 11, and the end of the ejector pin 50 away from the first mold body 10 is connected to the metal part 210.

[0234] In the method for preparing the insert injection molding structure 200 provided in the embodiment of the present application, after injecting glue into the injection molding cavity W to form the insert injection molding structure 200 filling the injection molding cavity W, the method for preparing the insert injection molding structure 200 may further include:

[0235] The first step is to open the second mold body 20 and the first mold body 10 to separate the second mold body 20 from the first mold body 10 .

[0236] Step 2: Drive the ejector pin 50 so that the ejector pin 50 drives the insert injection structure 200 to rise relative to the bottom wall of the first groove 11 and drive the ejection mechanism 30 so that the ejection mechanism 30 rises relative to the bottom wall of the first groove 11, so as to separate the ejection mechanism 30 from the insert injection structure 200, wherein the moving direction of the ejector pin 50 intersects with the moving direction of the ejection mechanism 30.

[0237] It can be understood that since the ejection direction of the ejection mechanism 30 is inclined to the demolding direction of the insert injection molding structure 200, when the ejection process of the ejection mechanism 30 and the demolding process of the insert injection molding structure 200 are carried out simultaneously, the ejection mechanism 30 will gradually separate from the insert injection molding structure 200, so that the prepared insert injection molding structure 200 can be more smoothly removed from the insert injection mold 100, and the reliability is better.

[0238] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. An insert injection mold, characterized in that: The insert injection mold comprises: A first mold body, the first mold body is used to fix the material belt, the material belt includes a metal piece, a belt body located at the periphery of the metal piece, and a material bridge connected between the metal piece and the belt body, the first mold body includes a first surface, the first mold body has a first groove, a first clamping slot, a second clamping slot and a first ejection hole, the opening of the first groove is located on the first surface, the first clamping slot is located at the periphery of the first groove and the opening of the first clamping slot is located on the first surface, the first clamping slot is used to fix the belt body of the material belt, the opening of the second clamping slot is located on the first surface, the second clamping slot is located between the first groove and the first clamping slot, the second clamping slot is used to fix the material bridge of the material belt, the first ejection hole passes through the first surface and the surface of the first mold body away from the second mold body, and the first ejection hole communicates the first groove and the second clamping slot; a second mold body, the second mold body comprising a second surface, the second surface facing the first surface, the second mold body having a second groove, a second ejection hole and a waste hole, the opening of the second groove is located on the second surface, the opening of the second groove and the opening of the first groove are arranged opposite to each other in the height direction of the insert injection mold, the second ejection hole and the waste hole are arranged in sequence in the height direction of the second mold body, the opening of the second ejection hole is located on the second surface, the opening of the second ejection hole and the opening of the first ejection hole located on the first surface are arranged opposite to each other, the second ejection hole is connected with the second groove and the waste hole, the second ejection hole is used to be connected with the first ejection hole and cooperate to form a guide channel for the ejection mechanism to move; and An ejection mechanism is provided through the first mold body, the ejection mechanism is located in the first ejection hole, and can move in the first ejection hole along the extension direction of the first ejection hole, the ejection mechanism can rise or fall relative to the bottom wall of the first groove, the ejection mechanism includes a cutter part and a packaging part connected to each other, the cutter part is used to cut the material bridge so that the metal part is disconnected from the belt body, the packaging part has a third groove, the third groove is used to communicate with the first groove and the second groove and cooperate to form an injection cavity, so that the metal part and the material bridge connected to the metal part and not cut by the cutter part are located in the injection cavity.

2. The insert injection mold according to claim 1, characterized in that: The extension direction of the first ejection hole is inclined with respect to the height direction of the insert injection mold; or, An extending direction of the first ejection hole is parallel to a height direction of the insert injection mold.

3. The insert injection mold according to claim 2, characterized in that: The first ejection hole includes a first sub-hole and a second sub-hole; The opening of one end of the first sub-hole is located at the bottom wall of the first groove, the opening of the other end of the first sub-hole is located at the surface of the first mold body away from the second mold body, and the first sub-hole is connected to the first groove; One end of the second sub-hole is connected to the first sub-hole, the opening of the other end of the second sub-hole is located on the first surface, and the second sub-hole is connected to the second slot and the first groove.

4. The insert injection mold according to claim 2 or 3, characterized in that: The first mold body includes a first side wall, and an extension direction of the first side wall intersects with an extension direction of the second card slot; The first ejection hole comprises a first hole wall and a second hole wall, the first hole wall and the second hole wall are arranged opposite to each other in the extension direction of the second clamping groove, and the first hole wall is closer to the first side wall than the second hole wall; The distance between the first hole wall and the first side wall gradually changes along the height direction of the first mold body, the distance between the second hole wall and the first side wall gradually changes along the height direction of the first mold body, and the extension direction of the first hole wall is the same as the extension direction of the second hole wall.

5. The insert injection mold according to claim 4, characterized in that: The packaging portion includes a first side surface, a second side surface, a third side surface and a fourth side surface, the first side surface and the second side surface are arranged opposite to each other, the first side surface faces the first hole wall, the second side surface faces the second hole wall, and the third side surface and the fourth side surface are arranged opposite to each other and connected between the first side surface and the second side surface; The opening of the third groove is located on the second side surface, and the third groove also runs through the third side surface and the fourth side surface.

6. The insert injection mold according to claim 1, characterized in that: The extension direction of the second ejection hole is inclined with respect to the height direction of the insert injection mold; or, An extending direction of the second ejection hole is parallel to a height direction of the insert injection mold.

7. The insert injection mold according to claim 1, characterized in that: The second ejection hole includes a third sub-hole and a fourth sub-hole; The opening of one end of the third sub-hole is located on the second surface, the other end of the third sub-hole is connected to the fourth sub-hole, and the third sub-hole is connected to the second groove; The opening of one end of the fourth sub-hole is located at the bottom wall of the second groove, the other end of the fourth sub-hole is connected to the waste hole, and the fourth sub-hole is connected to the second groove.

8. The insert injection mold according to claim 1, characterized in that: The second mold body includes a second side wall, and an extension direction of the second side wall intersects with an extension direction of the second card slot; The second ejection hole comprises a third hole wall and a fourth hole wall, the third hole wall and the fourth hole wall are arranged opposite to each other in the extension direction of the second clamping groove, and the third hole wall is closer to the second side wall than the fourth hole wall; The distance between the third hole wall and the second side wall gradually changes along the height direction of the first mold body, the distance between the fourth hole wall and the second side wall gradually changes along the height direction of the second mold body, and the extension direction of the third hole wall is the same as the extension direction of the fourth hole wall.

9. The insert injection mold according to any one of claims 1-3 and 5-8, characterized in that: The insert injection mold includes a first state and a second state; When the insert injection mold is in the first state, the material strip is clamped between the first mold body and the second mold body, the first groove is connected to the second groove, and the cutting knife part abuts against or has a gap with the to-be-cut section of the material bridge; When the insert injection mold is in the second state, the material strip is clamped between the first mold body and the second mold body, the first groove is connected to the second groove, and the cutting knife part passes through the gap of the material bridge, and the gap is formed after the segment to be cut is cut off from the material bridge.

10. The insert injection mold according to claim 9, characterized in that: When the insert injection mold is in the first state, the protrusion height of the ejection mechanism relative to the bottom wall of the first groove is a first height; When the insert injection mold is in the second state, the protrusion height of the ejection mechanism relative to the bottom wall of the first groove is a second height; The first height is smaller than the second height.

11. The insert injection mold according to claim 9, characterized in that: The insert injection mold also includes a third state; When the insert injection mold is in the third state, the first groove, the second groove and the third groove are interconnected and cooperate to form an injection cavity, and the metal part and the material bridge connected to the metal part and not cut off by the cutting part are located in the injection cavity.

12. The insert injection mold according to claim 11, characterized in that: When the insert injection mold is in the second state, the protrusion height of the ejection mechanism relative to the bottom wall of the first groove is a second height; When the insert injection mold is in the third state, the protrusion height of the ejection mechanism relative to the bottom wall of the first groove is a third height; The second height is smaller than the third height.

13. The insert injection mold according to any one of claims 1-3, 5-8, 10-12, characterized in that: The insert injection mold further includes an ejector pin, which is connected to the first mold body and partially located in the first groove. The ejector pin can rise or fall relative to the bottom wall of the first groove, and an end of the ejector pin away from the first mold body is used to connect with the metal part; The moving direction of the ejector pin intersects with the moving direction of the ejection mechanism.

14. A method for preparing an insert injection molding structure, characterized in that: The preparation method of the insert injection molding structure comprises: Providing a material strip, wherein the material strip comprises a metal piece, a strip body located at the periphery of the metal piece, and a material bridge connected between the metal piece and the strip body, wherein the material bridge comprises a segment to be cut; An insert injection mold is provided, wherein the insert injection mold comprises a first mold body, a second mold body and an ejection mechanism, wherein the first mold body comprises a first surface, the first mold body has a first groove, the opening of the first groove is located on the first surface, the second mold body comprises a second surface, the second surface faces the first surface, the second mold body has a second groove, the opening of the second groove is located on the second surface, the opening of the second groove and the opening of the first groove are arranged opposite to each other in the height direction of the insert injection mold, the ejection mechanism is penetrated by the first mold body, the ejection mechanism can rise or fall relative to the bottom wall of the first groove, and the ejection mechanism has a third groove; The material strip is clamped between the first mold body and the second mold body, and the metal piece and part of the material bridge are located in a space formed by the first groove and the second groove; Driving the ejection mechanism to move toward the second mold body to cut the to-be-cut segment off the material bridge and disconnect the metal piece from the belt body; driving the ejection mechanism to move toward the second mold body so that the third groove is connected with the first groove and the second groove and cooperates to form an injection cavity, wherein the material bridge connected to the metal part and not cut off by the ejection mechanism forms a conductive connection segment, and the conductive connection segment and the metal part are located in the injection cavity; and Glue is injected into the injection cavity to form an insert injection structure filling the injection cavity, wherein the insert injection structure includes the conductive connection segment, the metal part and the plastic part, the conductive connection segment is connected to the periphery of the metal part, and the plastic part wraps the conductive connection segment and the metal part.

15. The method for preparing an insert injection molding structure according to claim 14, characterized in that: The step of clamping the material strip between the first mold body and the second mold body and positioning the metal piece and a portion of the material bridge in a space formed by the first groove and the second groove communicating with each other comprises: The material strip is fixed to the first mold body, wherein the first mold body has a first card slot and a second card slot, the first card slot is located at the periphery of the first groove, the opening of the first card slot is located on the first surface, the second card slot communicates with the first groove and the first card slot, the opening of the second card slot is located on the first surface, the strip body is fixed to the first card slot, the material bridge is fixed to the second card slot, and the metal piece is fixed to the first groove; The second mold body is molded together with the first mold body so that the metal part and part of the material bridge are located in the connected first groove and the second groove.

16. The method for preparing the insert injection molding structure according to claim 14 or 15, characterized in that: The insert injection mold further includes an ejector pin, which is connected to the first mold body and partially located in the first groove, and the ejector pin can rise or fall relative to the bottom wall of the first groove, and one end of the ejector pin away from the first mold body is connected to the metal part; After injecting glue into the injection cavity to form an insert injection structure filling the injection cavity, the insert injection method for preparing the insert injection structure further includes: Opening the second mold body from the first mold body; The ejector pin is driven to cause the insert molding structure to rise relative to the bottom wall of the first groove, and the ejector mechanism is driven to cause the ejector mechanism to rise relative to the bottom wall of the first groove, so that the ejector mechanism is separated from the insert molding structure, wherein the moving direction of the ejector pin intersects with the moving direction of the ejector mechanism.

17. An insert injection molding structure, characterized in that: The insert injection molding structure is prepared by the preparation method of the insert injection molding structure as described in any one of claims 14 to 16.

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