Structure for connecting insert to molded product and die-casting die applying structure

Abstract

The invention relates to a structure for connecting an insert to a molded product and a die-casting die applying the same, the structure comprises a locking mechanism for locking the insert to be mounted at a required position, the locking mechanism comprises a lock seat and a lock pin, and the lock pin is mounted in the lock seat and can stretch out and draw back relative to the lock seat; an insert to be mounted is arranged on the peripheral wall, close to the bottom, of the lock seat in a sleeving manner; the actuating piece is arranged on the lock seat along the axis direction of an insert to be mounted, and is used for driving the lock pin to extend and retract inwards and outwards relative to the lock seat; and the limiting piece can limit the actuating piece in the state that the actuating piece drives the lock pin to extend outwards. According to the locking mechanism, locking is achieved through point contact between the lock pin and the insert to be installed, the insert can be prevented from being washed by molten metal to be dislocated, and meanwhile the structure of the insert to be installed cannot be damaged; when the locking mechanism is installed, only an installation channel needs to be formed in the fixed mold, and installation is easy and convenient.

Description

Technical Field

[0001] The invention relates to the technical field of pressure casting, and in particular to a structure for connecting an insert to a molded product and a pressure casting mold using the structure. Background Art

[0002] Existing motor casings are mostly processed by side casting. The large hole in the center of the motor casing is controlled by two round inserts on the left and right. The round inserts are easily dislocated due to the flushing of molten metal during the die-casting process. Once the position of the insert is offset, the molded product will be scrapped, which will ultimately result in cost waste.

[0003] In order to solve the above problems, some changes have been made to the side pouring method, such as the "motor housing high-pressure die-casting pouring system" disclosed in Chinese invention patent CN117380925A, which improves the pouring system inside the die-casting mold. An annular feed sleeve is provided at the upper end of the motor housing mold, and a round insert is provided at the upper end of the annular feed sleeve. The material enters the interior of the feed seat from the feed head, and then flows to the interior of the connecting seat and is distributed to the interior of the ten discharge heads along the annular feed sleeve, thereby realizing end face annular pouring and completing the processing of the center hole of the motor housing.

[0004] Although this solution can prevent the inserts from being displaced due to the erosion of molten metal, its universality is not high due to the relative complexity of its structure. Therefore, another type of mold that directly adds a positioning structure to prevent the inserts from being displaced or shifted is produced, such as the "A Type of Injection Mold" disclosed in 201920906037.9, which adopts a limiting column installed on the fixed mold plate and passing through the fixed mold core, and a movable mold insert with a limiting hole. Therefore, the fixed mold core and the movable mold insert can be positioned when the mold is closed to prevent them from being displaced or shifted. Although its structure is simpler than the above-mentioned casting system, it brings new problems: that is, it is necessary to add limiting columns to the fixed mold plate and also to open limiting holes in the movable mold insert. Since the movable mold insert ultimately needs to be connected to the molded product after molding, the opening of limiting holes in the movable mold insert actually destroys the structure of the original insert, and therefore further improvements are needed. Summary of the invention

[0005] The first technical problem to be solved by the present invention is to provide another structure for connecting the insert to the molded product to prevent the insert to be installed from being washed by molten metal and dislocated, especially without destroying the original insert structure.

[0006] The second technical problem to be solved by the present invention is to provide a die-casting mold having the above structure in view of the above-mentioned existing technical status.

[0007] The technical solution adopted by the present invention to solve the above-mentioned first technical problem is as follows: the structure for connecting the insert to the molded product includes a locking mechanism for locking the insert to be installed at a desired position, the locking mechanism includes a lock seat and a lock pin installed in the lock seat and capable of extending and retracting relative to the lock seat, and the insert to be installed is sleeved on the peripheral wall of the lock seat adjacent to the bottom;

[0008] Also included are:

[0009] an actuating member, disposed on the lock seat along the axis direction of the insert to be installed, and used for driving the lock pin to extend and retract relative to the lock seat; and

[0010] The limiting member limits the actuating member when the actuating member drives the locking pin to extend outward.

[0011] In order to avoid damaging the original insert structure, the actuator further includes a head and a tail for actuating the locking pin, and the tail is formed by the head extending downward along the axial direction. The lock seat is a cylinder with a closed bottom, and a guide hole for the locking pin to extend outward is provided on the bottom periphery or the outer wall adjacent to its bottom. The tail of the actuator enters the lock seat through the top opening of the cylinder, and can trigger the lock pin to move horizontally when the trigger member is triggered, so that the lock pin extends outward through the guide hole to lock the insert to be installed, and the lock pin is connected to the trigger member. As mentioned above, although the background technology mentions the use of a simple limiting method of limiting columns and limiting holes, it is necessary to open limiting holes on the movable mold insert, thereby destroying the movable mold insert; therefore, the present application designs the lock seat as a cylinder with a closed bottom, and opens a guide hole for the locking pin to extend outward on the bottom periphery or the outer wall adjacent to its bottom. The purpose is to transfer the existing limiting holes opened on the movable mold insert to the guide holes on the bottom periphery of the cylinder or the outer wall adjacent to its bottom, and at the same time provide for the insert to be installed to be mounted; since the axial direction of the cylindrical lock seat is along the axial direction of the insert to be installed, and the guide hole is arranged perpendicular to the axial direction, a specific trigger member is used to make the actuating force of the actuator turn laterally; finally, the applicant needs to emphasize that the locking mechanism realizes locking between the locking pin and the insert to be installed by point contact between the locking pin and the insert to be installed, and will not damage the structure of the insert to be installed.

[0012] In order to realize that the trigger member causes the actuating force of the actuating member to be laterally diverted, the present invention provides the following further improvement measures to achieve the above-mentioned objectives:

[0013] The trigger member abuts against the inner wall of the bottom wall of the lock seat, and the trigger member includes a first side portion with a connecting hole for connecting the locking pin and a second side portion opposite to the first side portion, and a moving space for driving the locking pin to move together is reserved between the first side portion and the inner circumferential wall of the lock seat, and the second side portion is provided with a first trigger portion that is triggered by the tail of the actuator, and correspondingly, the tail of the actuator is also provided with a second trigger portion that cooperates with the first trigger portion.

[0014] The present invention designs the trigger member to be "block-shaped", which can better limit the trigger member to the bottom wall of the lock seat on the one hand, and can use its own first side portion to connect the lock pin thereto on the other hand, and the first trigger portion is arranged on the second side portion, so that the trigger action can be better integrated in a limited space. In a natural state, a moving space for driving the lock pin to move together is reserved between the first side portion of the trigger member and the inner circumferential wall of the lock seat. In the triggered state, the first trigger portion and the second trigger portion cooperate to realize forced translation along the moving space, wherein the first trigger portion and the second trigger portion can adopt a variety of forms, such as transmission methods in mechanical structures such as flexible shaft transmission, hydraulic transmission and gas transmission, or can be realized through sensors and the like.

[0015] In order to realize that the actuator can move downward along the axis direction of the lock seat and actuate the triggering member at the same time, from the perspective of simple and ingenious structure, preferably, the tail of the actuator is provided with a limiting track that can slide relative to the triggering member, and correspondingly, the second side of the triggering member is provided with a guide rail that can be embedded in the limiting track, and the limiting track is provided with a first inclined surface that tilts from top to bottom away from the guide hole, and the first inclined surface constitutes the second triggering part, and the guide rail of the triggering member is also provided with a second inclined surface that matches the first inclined surface, and the second inclined surface constitutes the first triggering part, and when the downward actuating force of the tail of the actuator enters the cylinder body is converted into a state where the first inclined surface presses the second inclined surface, the triggering member can drive the lock pin to extend relative to the guide hole. When the tail of the actuator enters the cylinder body, it can touch the triggering member, and the inclined surfaces that cooperate with each other are used to make the triggering member move horizontally to make the lock pin extend outward, and the lock pin is inserted into the guide hole of the lock seat and locked.

[0016] In order to ensure that the actuator provides a suitable actuating force, preferably, the trigger member is block-shaped and also includes a third side portion and a fourth side portion connecting the first side portion and the second side portion, the third side portion is located above the fourth side portion, and the fourth side portion directly abuts against the inner wall of the bottom wall of the lock seat, and the limiting member is a limiting cylinder with open ends at both ends, the bottom of the limiting cylinder abuts against the third side portion, and the top of the limiting cylinder can be detachably placed on the edge of the top of the lock seat, and the top of the limiting cylinder is also provided with a first limiting step that can limit the head of the actuator, and correspondingly, the head of the actuator is also provided with a second limiting step that can be limited by the first limiting step.

[0017] The present invention designs the lock seat, the limiting cylinder and the actuator into a "sleeve" structure that can be nested with each other, which can cleverly achieve mutual limiting. In addition, the downward movement distance of the actuator determines the size of the actuating force applied by the actuator to the trigger. When the actuator moves downward too far, the actuating force provided by the actuator to the trigger is also too great. On the one hand, the trigger may cause damage to the bottom of the lock seat; on the other hand, the locking force applied by the lock pin to the insert to be installed will also be too great, which may cause damage to the insert to be installed; when the actuator moves downward too short, the actuating force provided by the actuator to the trigger is also too small, which will cause the locking force applied by the lock pin to the insert to be installed to be insufficient, thereby failing to completely fix the insert to be installed. For this reason, the relationship between the limiting steps needs to be designed at a more appropriate distance.

[0018] In order to achieve a better fixing effect on the insert to be installed, as a preferred embodiment, the cross-section of the tail of the actuator is in a "V" shape, and the limit rails are respectively provided with two and are arranged on both sides of the "V" shape, and the two are symmetrically distributed, and the trigger member and the lock pin are also respectively provided with two, which are also symmetrically distributed. Among them, a limit rail is respectively provided on both sides of the tail of the actuator, and a second trigger part is formed on each limit rail, and each second trigger part cooperates with the first trigger part of the corresponding trigger member below it, so that the trigger members on both sides simultaneously drive the corresponding lock pin to translate outward, and the locking force provided by the lock pins on both sides is balanced, so that the insert to be installed can be better fixed.

[0019] In order to solve the second technical problem, the present invention provides a die-casting mold having a structure for connecting an insert to a molded product, comprising:

[0020] Fixing the mold to shape the molded product;

[0021] The movable mold is located below the fixed mold and can form a molded product by injecting molten material when the mold cavities of the fixed mold and the movable mold are combined;

[0022] Inserts are used to fit into the required position of the molded product to be formed;

[0023] Features:

[0024] The locking mechanism is connected to the fixed mold, and correspondingly, the fixed mold is provided with an installation channel for the locking mechanism to pass through and be assembled into a required position in the molded product to be molded;

[0025] In the mold closed state, the insert to be installed can be extended to the required position corresponding to the mold cavity with the help of the locking mechanism, and in the mold open state, the locking mechanism can release the lock of the insert so that the insert can be connected to the molded product after molding.

[0026] In order to provide power to the actuator, preferably, the head of the actuator extends upward from the second limit step to form a connecting portion connected to the driving mechanism, the driving mechanism is exposed outside the installation channel, and drives the connecting portion to drive the actuator to move along the axial direction. Fixed mold The actuator is arranged in the installation channel of the lock seat, and the driving mechanism is exposed outside the installation channel. The driving mechanism is connected with the connecting part of the actuator to drive the actuator to translate along the axial direction Z in the lock seat.

[0027] In order to realize synchronous movement of the actuator and the piston rod, preferably, the driving mechanism includes a cylinder, a piston rod and a connecting member connecting the connecting part with the piston rod, and the connecting member is respectively provided with a first embedding portion and a second embedding portion spaced apart from each other in an upper and lower direction, the first embedding portion is for the piston rod to be embedded, and the second embedding portion is for the connecting part to be embedded, and correspondingly, a kit for the connecting member to be mounted on the top of the limiting cylinder is also provided, and the cylinder is placed outside the kit, and the cylinder is provided with an oil inlet pipe connected to the interior of the cylinder, and when the oil inlet pipe is in the oil filling state, the internal pressure of the cylinder increases, thereby driving the connecting member together with the connecting part of the piston rod and the actuator to move downward along the axial direction. Among them, the driving mechanism is specially provided with a connecting piece, and a first embedded part located at the top for the piston rod to be inserted and a second embedded part located at the bottom for the connecting piece to be inserted are arranged inside the connecting piece. With the help of the second embedded part inserted into the connecting piece, the actuator and the piston rod can maintain synchronous movement. In this way, when the oil inlet pipe on the oil cylinder is in the oil filling state, the internal pressure of the oil cylinder increases, thereby pushing the connecting piece, the piston rod and the actuator to move downward synchronously.

[0028] In order to facilitate the fixing of the oil cylinder, the kit is preferably in a cylindrical shape, the upper end of the kit abuts against the oil cylinder, the lower end of the kit abuts against the top of the limit cylinder, and the connecting piece can slide relative to the inner peripheral wall of the kit. The lower end of the kit is placed on the limit cylinder with a fixed position, and the upper end of the kit forms a place for the oil cylinder to rest. When the installation of the oil cylinder remains stable, when the internal pressure of the oil cylinder increases, the connecting piece, the piston rod and the actuator can be pushed to synchronously translate the kit downward.

[0029] Compared with the prior art, the advantages of the present invention are:

[0030] 1. The locking mechanism of the present invention adopts an actuator to drive the locking pin, which avoids the deficiency of purely relying on the insert to be installed to set a limiting structure on itself, and is very convenient for disassembly and assembly of the insert to be installed; in addition, the locking mechanism of the present invention realizes the locking between the locking pin and the insert to be installed by point contact, which will not damage the structure of the insert to be installed, and can also prevent the insert to be installed from being washed by the metal liquid and dislocated;

[0031] 2. The locking mechanism has low requirements on the compatibility of the mold. It only needs to open an installation channel on the fixed mold, and the locking mechanism can be extended from the outside of the fixed mold into the mold cavity. After use, the installation channel can be blocked with a filling block, and the installation process is relatively simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Schematic diagram of the three-dimensional structure of the die-casting mold in an embodiment of the present invention;

[0033] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure in another direction;

[0034] Figure 3 Schematic diagram of a longitudinal section of a die-casting mold in an embodiment of the present invention;

[0035] Figure 4 for Figure 3 A is an enlarged schematic diagram;

[0036] Figure 5 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention;

[0037] Figure 6 It is a schematic diagram of an exploded view of an embodiment of the present invention;

[0038] Figure 7 It is an exploded schematic diagram of an embodiment of the present invention (molded products, inserts and driving mechanisms are omitted);

[0039] Figure 8 Schematic diagram of the matching relationship between the actuating member and the triggering member in the unlocked / initial state in an embodiment of the present invention (the head of the actuating member is omitted);

[0040] Fig. 9 Schematic diagram of the matching relationship between the actuating member and the trigger member in the locked state in an embodiment of the present invention (the head of the actuating member is omitted);

[0041] Fig.10 is a schematic diagram of the three-dimensional structure of the first trigger member in an embodiment of the present invention;

[0042] Fig.11 for Fig.10 A schematic diagram of the three-dimensional structure in another direction;

[0043] Fig.12 is a schematic diagram of the three-dimensional structure of the second trigger member in an embodiment of the present invention;

[0044] Fig.13 for Fig.12 A schematic diagram of the three-dimensional structure in another direction;

[0045] Fig.14 is a longitudinal cross-sectional schematic diagram of a position limiting member in an embodiment of the present invention;

[0046] Fig.15 Schematic diagram of a longitudinal section of a locking mechanism in an unlocked / initial state according to an embodiment of the present invention (molded product and driving mechanism are omitted);

[0047] Fig.16 It is a longitudinal cross-sectional schematic diagram of the locking mechanism in a locked state according to an embodiment of the present invention (the molded product and the driving mechanism are omitted);

[0048] Fig.17 It is a schematic longitudinal cross-sectional view of an embodiment of the present invention. DETAILED DESCRIPTION

[0049] The present invention is further described in detail below with reference to the accompanying drawings.

[0050] like Figures 1 to 17 The figure shows the best embodiment of the present invention. The mold used for molding in this embodiment adopts a well-known injection molding mold, which is equipped with a fixed mold 2 for molding the outer surface side of the molded product A and a movable mold 3 for molding the inner surface side of the molded product A. The die-casting mold of this embodiment includes a mold, which includes a fixed mold 2 for molding the molded product A and a movable mold 3 located below the fixed mold 2. When the mold cavities of the fixed mold 2 and the movable mold 3 are combined, the molded product A can be molded by injecting molten material. It also includes an insert B for assembling into the required position of the molded product A to be molded, wherein the locking mechanism 1 is connected to the fixed mold 2, and the fixed mold 2 is provided with an installation channel 21 (reference Figure 2), the installation channel 21 is cylindrical and easy to process. When the locking mechanism 1 is not in use, the installation channel 21 can be filled with inserts, so as not to affect the die-casting process. In the state of mold closing, the insert B to be installed can be extended to the required position corresponding to the mold cavity with the help of the locking mechanism 1, and in the state of mold opening, the locking mechanism 1 can release the lock of the insert B to be installed, so that the insert B to be installed can be connected to the molded product A after molding.

[0051] It is easy for people in this field to know that the fixed mold 2 has a cavity for molding the outer surface side of the molded product A, and the movable mold 3 has an ejection mechanism composed of an ejector pin, etc., wherein the panel of the mold and the fixed mold 2 are pulled apart to a limited position by the front end of the injection molding machine, and the movable mold 3 is ejected upward by a specific distance by the ejector rod on the injection molding machine. The molding mold is opened after the molding process and the cooling process, and finally the molded product A is ejected in the demolding direction of the ejector pin and the molded product A. The structures of the fixed mold 2 and the movable mold 3 are not repeated here.

[0052] For convenience, this embodiment will Figure 1 The fixed mold 2 side is set as the upper side (Z) and the movable mold 3 side is set as the lower side (-Z) for explanation. In addition, in the following description, unless otherwise specified, the left side refers to Figure 1 The left side (-X) and the right side (X) in the figure refer to the opposite sides. The moving direction of the actuator 13 is along the top / bottom, and the left / right side refers to the "lateral direction" referred to in this application.

[0053] Specifically, Figure 7 As shown, the locking mechanism 1 of this embodiment includes a lock seat 11 and a lock pin 12 installed in the lock seat 11 and capable of extending and retracting relative to the lock seat 11. The insert B to be installed is sleeved on the peripheral wall of the lock seat 11 adjacent to the bottom. It also includes an actuator 13 arranged on the lock seat 11 along the axial direction of the insert B to be installed and used to drive the lock pin 12 to extend and retract relative to the lock seat 11, and a limiter 14 capable of limiting the position of the actuator 13 when the actuator 13 drives the lock pin 12 to extend outward. The locking mechanism 1 uses the actuator 13 to drive the lock pin 12, avoiding the deficiency of purely relying on the insert B to be installed to set a limit structure on itself, and is very convenient for the disassembly and assembly of the insert B to be installed. In addition, the locking mechanism 1 realizes the locking between the two by the point contact between the lock pin 12 and the insert B to be installed, which will not damage the structure of the insert B to be installed and can also avoid the insert B to be installed from being washed by the metal liquid and dislocated.

[0054] The following will focus on the way in which the locking mechanism 1 contacts the insert B to be installed through the locking pin 12 (from Fig.16As can be seen in the figure, specifically, the actuator 13 in this embodiment includes a head 131 and a tail 132 of the actuating lock pin 12, the tail 132 is formed by the head 131 extending downward along the axial direction Z, and the lock seat 11 is a bottom-closed cylinder, and a guide hole 111 for the lock pin 12 to extend outward is provided on the bottom periphery or the outer wall adjacent to its bottom. The purpose of designing the lock seat 11 as a bottom-closed cylinder, and providing a guide hole 111 for the lock pin 12 to extend outward on the bottom periphery or the outer wall adjacent to its bottom is to transfer the existing limiting hole on the insert B of the movable mold 3 to the guide hole 111 on the bottom periphery of the cylinder or the outer wall adjacent to its bottom, and at the same time, it can be provided for the insert B to be installed; the tail of the actuator 13 132 enters the lock seat 11 through the top opening of the cylinder, and can trigger the lock pin 12 to move horizontally under the action of the trigger member, so that the lock pin 12 extends outward through the guide hole 111 to lock the insert B to be installed. The lock pin 12 is connected to the trigger member. Since the axial direction of the cylindrical lock seat 11 is along the axial direction of the insert B to be installed, and the guide hole 111 is set perpendicular to the axial direction, the actuating force provided by the actuator 13 is along the -Z direction, that is, downward, and the trigger member drives the lock pin 12 to move and perform the locking action. The lateral (X and -X) force is required. Therefore, a specific trigger member is used to make the actuating force of the actuator 13 turn horizontally. The specific trigger member is "block-shaped", refer to Figures 8 to 13 , which is against the inner wall of the bottom wall of the lock seat 11. Specifically, the trigger member includes a first side portion 152 with a connecting hole 151 for connecting the lock pin 12 and a second side portion 153 opposite to the first side portion 152, and a moving space 112 for driving the lock pin 12 to move horizontally is reserved between the first side portion 152 and the inner peripheral wall of the lock seat 11. The second side portion 153 is provided with a first triggering portion triggered by the tail portion 132 of the actuator 13, and correspondingly, the tail portion 132 of the actuator 13 is also provided with a second triggering portion that cooperates with the first triggering portion. In addition, in order to better fix the insert B in this embodiment, reference is made to Figure 8 and Fig. 9 In this embodiment, the cross section of the tail portion 132 of the actuator 13 is designed to be "V" shaped, and two symmetrically distributed limiting rails 133 are arranged on the tail portion 132. The second side portion 153 of the trigger member is provided with a guide rail 156 that can be embedded in the limiting rail 133, wherein the limiting rail 133 includes a first limiting rail 1331 located on the left side of the "V" shape and a second limiting rail 1332 located on the right side of the "V" shape. Correspondingly, the second triggering part includes a second triggering part 1 1321 arranged on the first limiting rail 1331 and a second triggering part 2 1321' arranged on the second limiting rail 1332. Accordingly, with reference to Figure 7There are also two trigger members and lock pins 12 located below the limiting track 133, wherein a first trigger member 15 is arranged below the first limiting track 1331, a first trigger portion 1531 is arranged on the first trigger member 15, and a first lock pin 121 is arranged on the first trigger member 15 through a connecting hole 151, a second trigger member 15' is arranged below the second limiting track 1332, a first trigger portion 2 1531' is arranged on the second trigger member 15', and a second lock pin 122 is arranged on the second trigger member 15' through a connecting hole 151. When the actuator 13 translates downward to the specified position, the second trigger portion 1321 triggers the first trigger portion 1531, and at the same time, the second trigger portion 1321' triggers the first trigger portion 1531'. The first trigger member 15 drives the first locking pin 121 to move horizontally to the left, and the second trigger member 15' drives the second locking pin 122 to move horizontally to the right. At this time, the first locking pin 121 extends out of the guide hole 111 to provide a left locking force for the insert B to be installed, and the second locking pin 122 extends out of the guide hole 111 to provide a right locking force for the insert B to be installed. The locking forces provided by the first locking pin 121 and the second locking pin 122 are balanced, so that the insert B to be installed can be fixed.

[0055] In order to realize that the actuating member 13 can move downward along the axis direction of the lock seat 11 while actuating the trigger member, from the perspective of structural simplicity and ingenuity, this embodiment is realized by an inclined surface. As mentioned above, since the trigger member and the lock pin 12 are also provided with two, and are symmetrically distributed, the following description will be made by taking the trigger member located on one side as an example, such as the first trigger member 15,

[0056] The actuator 13 is provided with a first inclined surface which is inclined from top to bottom away from the guide hole 111, and the first inclined surface constitutes the second triggering part 1531, and the guide rail 156 of the first triggering member 15 is also provided with a second inclined surface which matches the first inclined surface, and the second inclined surface constitutes the first triggering part 1531. After the actuator 13 triggers the first triggering member 15, the conversion of the actuating force direction is mainly completed by the cooperation of the second triggering part 1321 on the actuator 13 and the first triggering part 1531 on the first triggering member 15. Figure 8 The figure shows the matching relationship between the first inclined surface and the second inclined surface in the initial state or unlocked state, at which time the first inclined surface and the second inclined surface are not in contact; Fig. 9 The figure shows the matching relationship between the first inclined surface and the second inclined surface in the locked state. At this time, the first inclined surface is pressed on the second inclined surface, and the downward actuating force is converted horizontally. Since the first side portion 152 and the inner peripheral wall of the lock seat 11 reserve a moving space 112, the first trigger member 15 will approach the inner wall surface of the lock seat 11 along the moving space 112, and the first lock pin 121 arranged on the first trigger member 15 will synchronously move horizontally and extend outward from the guide hole 111.

[0057] In addition, during the downward movement of the actuator 13, its moving distance determines the size of the actuating force applied by the actuator 13 to the trigger member. When the actuator 13 moves downward by too great a distance, the actuating force provided by the actuator 13 to the trigger member is also too great. On the one hand, the trigger member may cause damage to the bottom of the lock seat 11; on the other hand, the locking force applied by the locking pin 12 to the insert B to be installed is also too great, which may cause damage to the insert B to be installed; when the actuator 13 moves downward by too small a distance, the actuating force provided by the actuator 13 to the trigger member is also too small, which may result in insufficient locking force applied by the locking pin 12 to the insert B to be installed, thereby failing to completely fix the insert B to be installed.

[0058] In order to ensure that the actuator 13 provides a suitable actuating force, this embodiment is provided with an important component: a limit member 14, which is a limit tube with open ends at both ends. The specific structure of the limit tube can be referred to Figure 7 and Fig.14 The limiting cylinder is fixed by abutting the bottom against the third side portion 154 and the top being detachably placed on the edge of the top of the lock seat 11. A first limiting step 141 is provided on the top of the limiting cylinder, and a second limiting step 134 which can be limited by the first limiting step 141 is also provided on the head 131 of the actuator 13. The limiting cylinder and the lock seat 11 remain stationary, and the actuator 13 translates downward in the limiting cylinder. When the second limiting step 134 on the actuator 13 abuts against the first limiting step 141 of the limiting cylinder, the actuator 13 stops moving. The actuating force provided by the actuator 13 is just enough to trigger the trigger member and the lock pin 12 to move horizontally and lock the insert B to be installed.

[0059] In addition, refer to Figure 3 and Figure 4 In this embodiment, a driving mechanism 4 is provided outside the installation channel 21. The function of the driving mechanism 4 is to provide power to the actuator 13. The head 131 of the actuator 13 in this embodiment extends upward from the second limiting step 134 to form a connecting portion 135 connected to the driving mechanism 4 (refer to Figure 7 and Fig.17 ), the driving mechanism 4 drives the connecting portion 135 and then drives the actuating member 13 to move upward or downward. In order to achieve synchronous movement of the actuating member 13 and the piston rod 44, refer to Figure 7 and Fig.17The driving mechanism 4 in this embodiment includes an oil cylinder 41, a piston rod 44 and a connecting member 45 connecting the connecting portion 135 with the piston rod 44, wherein the connecting member 45 is cylindrical, and is provided with a first embedding portion 451 and a second embedding portion 452 spaced apart from each other in the upper and lower directions. The first embedding portion 451 is for the piston rod 44 to be embedded, and the second embedding portion 452 is for the connecting portion 135 to be embedded. By setting the connecting portion 135, the connecting member 45, the piston rod 44 and the connecting portion 135 can synchronously perform translational motion under the drive of the oil cylinder 41.

[0060] In addition, the oil cylinder 41 in the driving mechanism 4 needs to be fixed to drive the actuator 14. Figure 7 In this embodiment, a cylindrical sleeve 5 is provided, the lower end of the sleeve 5 is against the top of the limit sleeve, and the upper end of the sleeve 5 forms a space for the oil cylinder 41 to rest (refer to Fig.15 and 16 ). refer to Fig.17 The oil cylinder 41 is provided with an oil inlet pipe 42 and an oil return pipe 43 which are connected to the interior of the oil cylinder 41. When the oil inlet pipe 42 is in the oil-inletting state, the internal pressure of the oil cylinder 41 increases, thereby driving the connecting member 45 together with the piston rod 44 and the connecting part 135 of the actuator 13 to move downward synchronously; when the oil return pipe 43 is in the oil-returning state, the internal pressure of the oil cylinder 41 decreases, thereby driving the connecting member 45 together with the piston rod 44 and the connecting part 135 of the actuator 13 to move upward synchronously.

[0061] The working process of this embodiment is as follows: before the die casting of the motor housing, the insert B to be installed is sleeved on the lock seat 11, and the lock seat 11 extends into the mold cavity through the installation channel 21. When the oil inlet pipe 42 of the oil cylinder 41 is in the oil filling state, the pressure inside the oil cylinder 41 increases, and the driving connecting member 45 together with the piston rod 44 and the actuator 13 move downward. When the second limiting step 134 on the actuator 13 abuts against the first limiting step 141 of the limiting cylinder, the actuator 13 stops moving at this time, and the actuator 13 switches from the initial state position to the locked state position (refer to Fig.16 ), the second trigger part 1321 triggers the first trigger part 1531, and at the same time, the second trigger part 2 1321' triggers the first trigger part 2 1531', the first trigger member 15 drives the first locking pin 121 to translate to the left, and the second trigger member 15' drives the second locking pin 122 to translate to the right, the first locking pin 121 and the second locking pin 122 extend to the outside of the guide hole 111 and lock the insert B.

[0062] When the oil return pipe 43 of the oil cylinder 41 is in the oil return state, the pressure inside the oil cylinder 41 decreases, and the oil cylinder 41 drives the connecting member 45 together with the piston rod 44 and the actuator 13 to translate upward and reset. At this time, the actuator 13 switches from the locked state position to the unlocked state position (refer to Fig.15), when the first trigger part 1531 and the first trigger part 2 1531' are not subjected to force, the first trigger member 15 drives the first lock pin 121 to return to the right, and the second trigger member 15' drives the second lock pin 122 to return to the left, the first lock pin 121 and the second lock pin 122 shrink to the inside of the lock seat 11, the insert B is unlocked, the motor housing is formed in the mold cavity, and the insert B becomes a part of the motor housing.

Claims

1. A structure for connecting an insert to a molded product, characterized in that: A locking mechanism (1) for locking an insert (B) to be installed at a desired position, the locking mechanism (1) comprising a locking seat (11) and a locking pin (12) installed in the locking seat (11) and capable of telescoping inside and outside the locking seat (11), the insert (B) to be installed being sleeved on a peripheral wall of the locking seat (11) adjacent to the bottom; Also included are: An actuator (13) is arranged on the lock seat (11) along the axial direction (Z) of the insert (B) to be installed, and is used to drive the lock pin (12) to extend and retract inward and outward relative to the lock seat (11); as well as A limiting member (14) limits the position of the actuating member (13) when the actuating member (13) drives the locking pin (12) to extend outward.

2. The die-casting mold according to claim 1, characterized in that: The actuating member (13) comprises a head (131) and a tail (132) for actuating the locking pin (12), the tail (132) being formed by the head (131) extending downward along the axial direction (Z), the locking seat (11) being a cylinder with a closed bottom, and a guide hole (111) for the locking pin (12) to extend outward is provided on the periphery of the bottom or on the outer wall adjacent to the bottom, the tail (132) of the actuating member (13) enters the locking seat (11) through the top opening of the cylinder, and can trigger the locking pin (12) to move laterally under the action of the trigger member (15, 15'), so that the locking pin (12) extends outward through the guide hole (111) to lock the insert (B) to be installed, and the locking pin (12) is connected to the trigger member (15, 15').

3. The die-casting mold according to claim 2, characterized in that: The trigger member (15, 15') abuts against the inner wall of the bottom wall of the lock seat (11), and the trigger member (15, 15') includes a first side portion (152) provided with a connection hole (151) for connecting the lock pin (12) and a second side portion (153) opposite to the first side portion (152), and a moving space (112) for driving the lock pin (12) to move horizontally is reserved between the first side portion (152) and the inner peripheral wall of the lock seat (11), and the second side portion (153) is provided with a first trigger portion (1531, 1531') triggered by the tail portion (132) of the actuator (13), and correspondingly, the tail portion (132) of the actuator (13) is also provided with a second trigger portion (1321, 1321') cooperating with the first trigger portion (1531, 1531').

4. The die-casting mold according to claim 3, characterized in that: The tail portion (132) of the actuating member (13) is provided with a limiting track (133) capable of sliding relative to the trigger member (15, 15'); correspondingly, the second side portion (153) of the trigger member (15, 15') is provided with a guide rail (156) capable of being embedded in the limiting track (133); and the limiting track (133) is provided with a first inclined surface inclined from top to bottom in a direction away from the guide hole (111), and the first inclined surface constitutes the second trigger portion (1321, 132 1'), and the guide rail (156) of the trigger member (15, 15') is also provided with a second inclined surface matched with the first inclined surface, and the second inclined surface constitutes the first trigger portion (1531, 1531'). When the tail (132) of the actuating member (13) enters the cylinder, the downward actuating force is converted into the state in which the first inclined surface presses the second inclined surface, so that the trigger member (15, 15') can drive the locking pin (12) to extend relative to the guide hole (111).

5. The die-casting mold according to claim 4, characterized in that: The trigger member (15, 15') is block-shaped and further comprises a third side portion (154) and a fourth side portion (155) connecting the first side portion (152) and the second side portion (153); the third side portion (154) is located above the fourth side portion (155); the fourth side portion (155) directly abuts against the inner wall of the bottom wall of the lock seat (11); the limiting member (14) is a limiting cylinder with both upper and lower ends open; the bottom of the limiting cylinder abuts against the third side portion (154); and the top of the limiting cylinder is detachably placed on the edge of the top of the lock seat (11); the top of the limiting cylinder is also provided with a first limiting step (141) capable of limiting the head portion (131) of the actuating member (13); correspondingly, the head portion (131) of the actuating member (13) is also provided with a second limiting step (134) capable of being limited by the first limiting step (141).

6. The die-casting mold according to claim 4 or 5, characterized in that: The cross section of the tail portion (132) of the actuating member (13) is in a "V" shape, two limiting rails (133) are provided and arranged on both sides of the "V" shape, and the two are symmetrically distributed, and two trigger members (15, 15') and two lock pins (12) are also provided and are also symmetrically distributed.

7. A die-casting mold using the structure as claimed in any one of claims 1 to 6, comprising a mold, comprising: A fixed mold (2) is used to mold the molded product (A); The movable mold (3) is located below the fixed mold (2) and can form a molded product (A) by injecting molten material when the mold cavities of the fixed mold (2) and the movable mold (3) are combined; The insert (B) is used to be assembled into the required position of the molded product (A) to be molded; Features: The locking mechanism (1) is connected to the fixed mold (2), and correspondingly, the fixed mold (2) is provided with an installation channel (21) for the locking mechanism (1) to pass through and be assembled into a required position in the molded product (A) to be molded; In the mold-closed state, the insert (B) to be installed can be extended to the required position corresponding to the mold cavity with the help of the locking mechanism (1), and in the mold-open state, the locking mechanism (1) can release the lock of the insert (B), so that the insert (B) can be connected to the molded product (A) after molding.

8. The die-casting mold according to claim 7, characterized in that: The head portion (131) of the actuator (13) extends upward from the second limiting step (134) to form a connecting portion (135) connected to the driving mechanism (4); the driving mechanism (4) is exposed outside the installation channel (21) and drives the connecting portion (135) to drive the actuator (13) to move along the axial direction (Z).

9. The die-casting mold according to claim 8, characterized in that: The driving mechanism (4) comprises an oil cylinder (41), a piston rod (44) and a connecting piece (45) connecting the connecting part (135) with the piston rod (44); the connecting piece (45) is provided with a first embedding part (451) and a second embedding part (452) which are spaced apart from each other in upper and lower directions; the first embedding part (451) is for the piston rod (44) to be embedded in, and the second embedding part (452) is for the connecting part (135) to be embedded in. Correspondingly, the top of the limiting cylinder The part is also provided with a set (5) on which the connecting member (45) can be mounted. The oil cylinder (41) is placed outside the set (5). The oil cylinder (41) is provided with an oil inlet pipe (42) connected to the inside of the oil cylinder (41). When the oil inlet pipe (42) is in an oil-filled state, the internal pressure of the oil cylinder (41) increases, thereby driving the connecting member (45) together with the piston rod (44) and the connecting portion (135) of the actuator (13) to move downward along the axial direction (Z).

10. The die-casting mold according to claim 9, characterized in that: The set (5) is in a cylindrical shape, the upper end of the set (5) abuts against the oil cylinder (41), the lower end of the set (5) abuts against the top of the limiting cylinder, and the connecting piece (45) can slide relative to the inner peripheral wall of the set (5).

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