Quick die changing device

Abstract

The invention relates to the technical field of injection molds, in particular to a quick mold changing device which comprises a lower mold plate, a movable mold assembly, a demolding assembly, a lower mold plate cavity and a cavity channel located on the outer side of the cavity, and the cavity channel communicates with the cavity. The movable mold assembly comprises a mold core seat arranged in the mold cavity, a locking piece arranged in the cavity channel in a sliding mode and a movable mold core, the movable mold core can move back and forth in the first direction, and the locking piece can be switched between a locking position and an unlocking position; the demolding assembly comprises a moving plate, a demolding power part, a demolding column and a supporting column, the moving plate is located below the lower mold plate and connected with an output shaft of the demolding power part, the demolding column and the supporting column which extend in the first direction are arranged on the moving plate, and the end, away from the moving plate, of the demolding column extends into the mold cavity and penetrates through the mold core base to be connected with the movable mold core; the end, away from the movable plate, of the supporting column extends into the cavity channel and is connected with the locking piece. Manual operation is not needed, installation time consumption is shortened, production efficiency can be improved, and the risk that operators are scalded can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, and in particular to a rapid mold changing device. Background Art

[0002] Injection molds are tools used to produce injection molded products and are one of the key components of the injection molding process. They are used to manufacture various plastic products, including plastic parts, components, accessories, containers, packaging, toys, auto parts, electronic product housings, etc. Among them, batteries are the main source of power for new energy electric vehicles, and safe, reliable, and high-energy-density battery modules are increasingly favored by the market.

[0003] A battery usually contains multiple soft-pack battery modules, and a soft-pack battery module usually contains multiple soft-pack cells, a battery casing, a busbar, etc. At present, most of the busbar injection molding processes use vertical injection molding machines, and the mold design is a "1 fixed mold + 2 movable molds" structure. It is necessary to directly install hardware inserts on the machine and complete the injection molding. However, with the increase in product complexity and the increase in demand for multi-variety and small-batch production, the positioning of inserts relies solely on manual adjustment, which is prone to mold wear or product size deviation due to deviation, and the yield rate is difficult to guarantee. At the same time, the manual mold replacement method is used, and the operator is at risk of scalding, and the installation takes a long time, resulting in low production efficiency. Summary of the invention

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the present application provides a quick mold changing device.

[0005] The present application provides a rapid mold changing device, comprising:

[0006] A lower mold plate, which is provided with a mold cavity extending along a first direction and a cavity channel located outside the mold cavity, wherein the cavity channel is connected to the mold cavity;

[0007] A movable mold assembly, comprising a mold core seat arranged in the mold cavity, a locking member slidably arranged in the cavity, and a movable mold core, wherein the movable mold core can move back and forth along the first direction, and the locking member can switch between a locked position and an unlocked position;

[0008] A demoulding assembly, comprising a moving plate, a demoulding power member, a demoulding column and a supporting column, wherein the moving plate is located below the lower mold plate and is connected to the output shaft of the demoulding power member, and the moving plate is provided with a demoulding column and a supporting column extending along the first direction, and one end of the demoulding column away from the moving plate extends into the mold cavity, passes through the mold core seat and is connected to the movable mold core, and one end of the supporting column away from the moving plate extends into the cavity and is connected to the locking member;

[0009] Among them, when the movable mold core is stacked on the mold core seat and the locking piece is in the locking position, the locking piece locks the movable mold core; when the movable mold core is located above the mold core seat and the locking piece is in the unlocking position, the locking piece at least partially extends out of the cavity and is located on the outer peripheral side of the movable mold core, so that the locking piece releases the lock on the movable mold core.

[0010] In one embodiment, the channel faces the side of the cavity and has a first guide surface, the first guide surface is inclined relative to the plane where the first direction is located, and the locking member has a second guide surface on the surface opposite to the mold core seat, the second guide surface is inclined relative to the plane where the first direction is located, and the second guide surface and the first guide surface are in contact with each other to cooperate in sliding, so that the locking member can switch between the locked position and the unlocked position.

[0011] In one embodiment, a slot is provided on the surface of the movable mold core facing the locking member, and a protrusion is provided on the surface of the locking member for contacting the movable mold core; when the locking member is in the locking position, the protrusion is inserted into the slot.

[0012] In one embodiment, the locking member has a connection port at one end connected to the support column, and a symmetrical sliding strip is provided on the inner wall of the connection port. The end of the support column away from the movable plate is concave to form a sliding groove, and the sliding groove cooperates with the sliding strip.

[0013] In one embodiment, the movable mold assembly further includes:

[0014] A positioning guide post, which is arranged on the surface of the mold core seat for connecting with the movable mold core along the first direction, and a positioning hole adapted to the positioning guide post is opened on the movable mold core;

[0015] A heat-conducting column is arranged along the first direction at the middle of the surface of the mold core seat for connecting with the movable mold core, a through hole is opened in the middle of the movable mold core, and the positioning column is located at the periphery of the heat-conducting column.

[0016] In one embodiment, the movable mold core has an annular molding groove, and the molding groove is provided with a first plug hole and a second plug hole spaced apart along the circumferential direction, and the first plug hole and the second plug hole are both used for plugging in corresponding inserts.

[0017] In one embodiment, the rapid mold change device further includes a lifting assembly, and the lifting assembly includes:

[0018] A lifting plate, which is located below the moving plate and can move back and forth along the first direction;

[0019] An ejector pin extends along the first direction, one end of the ejector pin is connected to the lifting plate, and the other end of the ejector pin passes through the movable plate, the lower mold plate and the mold core seat and extends to the movable mold core, so as to eject the molded product from the movable mold core.

[0020] In one embodiment, the lifting assembly further comprises:

[0021] A support plate, which is located below the lower template and connected to the lower template, the support plate has a storage cavity, the movable plate is arranged in the storage cavity in a liftable manner, and a through hole communicating with the storage cavity is opened on the support plate along the first direction, and the output shaft of the demoulding power member passes through the through hole and is connected to the movable plate;

[0022] A base, which is connected to the surface of the support plate away from the lower mold plate, the base has a groove, the lifting plate is escalably arranged in the groove, and the demoulding power member is installed on the side of the base;

[0023] A first guide column extending along the first direction, one end of the first guide column being connected to the lifting plate, and the other end of the first guide column penetrating through the support plate and inserted into the lower template;

[0024] An elastic member is located between the lifting plate and the supporting plate and is wound around the first guide column.

[0025] In one embodiment, the rapid mold change device further comprises:

[0026] A detection member, which is mounted on the lower template and is located on the moving path of the moving plate;

[0027] A controller is electrically connected to the detection member and the demoulding power member, and the controller is configured to control the demoulding power member based on a detection signal of the detection member.

[0028] In one embodiment, the rapid mold change device further comprises:

[0029] An upper template is provided with a mounting hole, wherein a guide sleeve is embedded in the mounting hole;

[0030] A second guide column is connected to the lower template along the first direction, and at least a part of the second guide column is used to be sleeved with the guide sleeve.

[0031] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0032] The demoulding power member is utilized to drive the movable plate to move back and forth along the first direction, thereby controlling the lifting and lowering of the movable mold core and the switching of the locking member between the locking position and the unlocking position, so that the movable mold core can be automatically replaced without manual operation, thus shortening the installation time, which is beneficial to improving production efficiency and reducing the risk of scalding for operators. At the same time, it can reduce the mold wear or product size deviation caused by installation errors, and can greatly reduce the defective rate of good products. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0035] In the attached figure:

[0036] Figure 1 This is a structural schematic diagram of an embodiment of a rapid mold changing device of the present application;

[0037] Figure 2 It is a structural schematic diagram of a movable mold assembly and a demoulding assembly in a quick mold changing device of the present application;

[0038] Figure 3 It is a structural schematic diagram of a lower mold plate in a quick mold changing device of the present application;

[0039] Figure 4 This is a schematic diagram of the structure of a locking member and a support column in a quick mold changing device of the present application;

[0040] Figure 5 It is a structural schematic diagram of a locking member in a quick mold changing device of the present application;

[0041] Figure 6 It is a structural schematic diagram of a movable mold core in a quick mold changing device of the present application;

[0042] Figure 7 It is a connection diagram of another embodiment of a quick mold changing device of the present application.

[0043] Figure Number:

[0044] 10. Lower template; 10a. Cavity; 10b. Cavity; 20. Moving mold assembly; 21. Moving mold core; 21a. Molding groove; 21b. First plug hole; 21c. Second plug hole; 21d. Positioning hole; 21e. Slot; 22. Locking piece; 22a. Connecting port; 22b. Slide bar; 22c. Bump; 23. Core seat; 30. Demolding assembly; 31. Demolding power piece; 32. Lifting plate; 33. Support column; 34. Demolding column; 40. Lifting assembly; 41. Lifting plate; 42. Support plate; 43. Base; 44. Elastic piece; 45. First guide column; 50. Second guide column; 60. Heat-conducting column; 70. Positioning guide column; 80. Detection piece; 90. Upper template; A. First guide surface; B. Second guide surface; X. First direction. DETAILED DESCRIPTION

[0045] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in a specific direction, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0046] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intermediate elements. The terms "first", "second", "third", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third", etc. can explicitly or implicitly include one or more of the features. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0047] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present invention.

[0048] Please refer to Figures 1 to 3 The present application provides a rapid mold change device, which includes a lower mold plate 10, a movable mold assembly 20 and a demolding assembly 30. The lower mold plate 10 is provided with a mold cavity 10a extending along a first direction X and a cavity 10b located outside the mold cavity 10a, and the cavity 10b is connected to the mold cavity 10a. The movable mold assembly 20 includes a mold core seat 23 arranged in the mold cavity 10a, a locking member 22 slidably arranged in the cavity 10b, and a movable mold core 21. The movable mold core 21 can move back and forth along the first direction X, and the locking member 22 can switch between a locked position and an unlocked position. The demoulding assembly 30 includes a moving plate, a demoulding power member 31, a demoulding column 34 and a supporting column 33. The moving plate is located below the lower mold plate 10 and is connected to the output shaft of the demoulding power member 31. The moving plate is provided with a demoulding column 34 and a supporting column 33 extending along the first direction X. The end of the demoulding column 34 away from the moving plate extends into the mold cavity 10a, and passes through the mold core seat 23 to be connected to the movable mold core 21. The end of the supporting column 33 away from the moving plate extends into the cavity 10b and is connected to the locking member 22. When the movable mold core 21 is stacked on the mold core seat 23 and the locking member 22 is in the locking position, the locking member 22 locks the movable mold core 21; when the movable mold core 21 is located above the mold core seat 23 and the locking member 22 is in the unlocking position, the locking member 22 at least partially extends out of the cavity 10b and is located on the outer peripheral side of the movable mold core 21, so that the locking member 22 releases the locking of the movable mold core 21.

[0049] The quick mold changing device of this embodiment utilizes the demoulding power member 31 to drive the movable plate to move back and forth along the first direction X, thereby controlling the lifting and lowering of the movable mold core 21 and the switching of the locking member 22 between the locking position and the unlocking position, so that the movable mold core 21 can be replaced automatically without manual operation, thus shortening the installation time, which is beneficial to improving production efficiency and reducing the risk of scalding for operators. At the same time, it can reduce the mold wear or product size deviation caused by installation errors, and can greatly reduce the defective rate of good products.

[0050] In order to facilitate understanding of the working principle of the quick mold changing device of this embodiment, the following is an example of installing and removing the movable mold core 21, which is as follows:

[0051] After the movable mold core 21 is assembled, it is moved to the top of the cavity 10a by an automatic device (such as a robot) so that the movable mold core 21 is opposite to the mold core seat 23. At this time, the demoulding power member 31 drives the lifting plate 32 to move upward along the first direction X, so that the locking member 22 is located in the unlocking position. Then, the movable mold core 21 is placed on the mold core seat 23 by an automatic device, and then the demoulding power member 31 drives the lifting plate 32 to move downward along the first direction X, so as to drive the demoulding column 34 and the supporting column 33 to move downward, thereby switching the locking member 22 from the unlocking position to the locking position. The movable mold core 21 is locked on the mold core seat 23 until the movable mold core 21 is pulled and stored in the cavity 10a, and the demolding power member 31 stops driving, thereby completing the automatic installation of the movable mold core 21; after the injection molding is completed, the demolding power member 31 drives the lifting plate 32 to move upward along the first direction X, so that the locking member 22 is pushed by the support column 33 to switch from the locking position to the unlocking position, and the movable mold core 21 is pushed upward by the demolding rod and moved out of the cavity 10a, and then the pushed-out movable mold core 21 is removed by automatic equipment, thereby completing the automatic disassembly of the movable mold core 21.

[0052] Here, it should be noted that the first direction X is the moving direction of the movable mold core 21. Figure 1 The locking position refers to the position where the locking member 22 is pushed to contact with the movable mold core 21 to limit its relative movement, and the unlocking position refers to the position where the locking member 22 is pushed to at least partially extend out of the cavity 10b and is located on the outer peripheral side of the movable mold core 21, at which time the locking member 22 is not in contact with the movable mold core 21. In addition, the demoulding power member 31 is configured to provide the power required to drive the lifting plate 32 to move, which can specifically adopt an oil cylinder or a power component in the prior art that can provide the power to drive the lifting plate 32 to move, and this is not limited.

[0053] In the process of placing the movable mold core 21 on the mold core seat 23, it is necessary to ensure accurate docking to prevent the installation of the movable mold core 21 and the mold core seat 23 from being in error, thereby causing mold wear or product size deviation, resulting in difficulty in ensuring the yield rate. To this end, in the present embodiment, the movable mold assembly 20 also includes a positioning guide column 70, which is arranged on the surface of the mold core seat 23 along the first direction X for connecting with the movable mold core 21, and the movable mold core 21 is provided with a positioning hole 21d adapted to the positioning guide column 70. That is to say, when installing the movable mold core 21, the movable mold core 21 is first placed above the mold core seat 23 so that the positioning hole 21d is aligned with the positioning guide column 70, and then the movable mold core 21 is pushed close to the mold core seat 23 until the positioning guide column 70 penetrates into the positioning hole 21d, thereby ensuring that the movable mold core 21 is accurately installed on the mold core seat 23, which can reduce the installation error and cause mold wear or product size deviation.

[0054] Please refer to Figure 2Furthermore, the movable mold assembly 20 further includes a heat-conducting column 60, which is arranged along the first direction X at the middle of the surface of the mold core seat 23 for connecting with the movable mold core 21, and a through hole is provided in the middle of the movable mold core 21, and the positioning column is located at the periphery of the heat-conducting column 60. In actual applications, by arranging the heat-conducting column 60 in the middle of the mold core seat 23, an axial heat conduction path can be formed to effectively conduct heat to the movable mold core 21, which is conducive to uniform heat conduction and avoids local overheating of the movable mold core 21, which affects the quality of the injection molded product, and the axial centering accuracy of the movable mold core 21 and the mold core seat 23 can be ensured, which plays a role in restraining and preventing radial deviation, and further improving the installation accuracy of the movable mold core 21. In other words, the heat-conducting column 60 can play a role in positioning and uniform heat conduction.

[0055] Please refer to Figure 4 and Figure 5 In one embodiment, the side of the cavity 10b facing the cavity 10a has a first guide surface A, and the first guide surface A is inclined relative to the plane where the first direction X is located. The surface of the locking member 22 facing away from the mold core seat 23 has a second guide surface B, and the second guide surface B is inclined relative to the plane where the first direction X is located. The second guide surface B is in contact with the first guide surface A to cooperate in sliding, so that the locking member 22 can switch between a locked position and an unlocked position.

[0056] Exemplarily, pushing the locking piece 22 to switch between the unlocking position and the locking position is achieved by the inclined cooperation of the first guide surface A and the second guide surface B, that is: when the movable mold core 21 needs to be disassembled, the support column 33 is pushed to move upward to drive the locking piece 22 to slide upward. Since the second guide surface B of the locking piece 22 is in contact with the first guide surface A and both are inclined, the locking piece 22 can slide along the inclined direction, and then the locking piece 22 gradually slides outward from the movable mold core 21, thereby achieving switching from the locking position to the unlocking position; when the movable mold core 21 needs to be locked, the support column 33 is pulled downward to drive the locking piece 22 to move downward, so that the locking piece 22 gradually slides inward toward the movable mold core 21 until the locking piece 22 locks the movable mold core 21. That is to say, the inclined first guide surface A and the second guide surface B can cleverly decompose the force driving the locking member 22 to move into a normal constraint force and a tangential driving force, so that it has a self-locking function, realizes single-degree-of-freedom precise locking, avoids the jamming problem of traditional direct pressure locking, and significantly improves the operating smoothness.

[0057] Please refer to Figure 6In one embodiment, a slot 21e is provided on the surface of the movable mold core 21 facing the locking member 22, and a protrusion 22c is provided on the surface of the locking member 22 for contacting the movable mold core 21. When the locking member 22 is in the locking position, the protrusion 22c is inserted into the slot 21e. In this way, when the locking member 22 is pushed and gradually approaches the movable mold core 21, the protrusion 22c on the locking member 22 will gradually extend into the slot 21e until the protrusion 22c cooperates with the slot 21e to clamp, thereby locking the movable mold core 21, ensuring that no relative displacement occurs during the movement of the movable mold core 21, and reducing installation errors.

[0058] In one embodiment, the end of the locking member 22 connected to the support column 33 is provided with a connection port 22a, and the inner side wall of the connection port 22a is provided with a symmetrical slide bar 22b, and the end of the support column 33 away from the movable plate is concave to form a slide groove, and the slide groove cooperates with the slide bar 22b. In this way, the end of the support column 33 away from the movable plate can be extended into the connection port 22a by sliding, and the slide bar 22b slides into the slide groove to play a role of clamping and fixing, so that the locking member 22 is firmly fixed on the support column 33, preventing the locking member 22 from falling off during the process of driving the locking member 22 to move, and there is no need to use auxiliary workpieces (such as screws) for fixing, which is convenient for the subsequent replacement of the locking member 22.

[0059] Please refer to Figure 6 In one embodiment, the movable mold core 21 has an annular molding groove 21a, and the molding groove 21a is provided with a first plug hole 21b and a second plug hole 21c spaced apart along the circumferential direction. The first plug hole and the second plug hole are both used to plug in corresponding inserts.

[0060] Illustratively, the product molded in this embodiment is a circular and elongated structure. During the injection molding process, the injection plastic is prone to insufficient feeding or formation of air pockets in some narrow and elongated positions. In order to ensure the yield of the injection molded product, a first plug hole 21b and a second plug hole 21c are circumferentially spaced apart on the molding groove 21a, and corresponding inserts are inserted at the first plug hole and the second plug hole to facilitate the entry of the injection plastic, enhance exhaust and prevent the formation of air pockets.

[0061] Please refer to Figure 1 and Figure 7In one embodiment, the quick mold change device further includes a lifting assembly 40, which includes a lifting plate 41 and an ejector pin. The lifting plate 41 is located below the movable plate and can move back and forth along the first direction X. The ejector pin extends along the first direction X, one end of the ejector pin is connected to the lifting plate 41, and the other end penetrates the movable plate, the lower mold plate 10 and the mold core seat 23 and extends to the movable mold core 21, so as to eject the molded product from the movable mold core 21. In actual applications, it is necessary to first eject the molded product from the movable mold core 21, and then remove the movable mold core 21, so as to reduce the subsequent process of manually removing the product from the movable mold core 21. To this end, in this embodiment, by driving the lifting plate 41 to move along the first direction X, the ejector pin is driven to lift upward, and then the injection molded product on the movable mold core 21 is ejected, and there is no need to manually remove it later, which is conducive to improving production efficiency.

[0062] In addition, it should be noted that the power source for driving the lifting plate 41 to move may be a push rod on the injection molding machine, or other power components in the prior art, and this is not limited.

[0063] In one embodiment, the lifting assembly 40 also includes a support plate 42, a base 43, a first guide column 45 and an elastic member 44. The support plate 42 is located below the lower template 10 and is connected to the lower template 10. The support plate 42 has a storage cavity, and the movable plate can be lifted and lowered in the storage cavity. A through hole connected to the storage cavity is opened on the support plate 42 along the first direction X, and the output shaft of the demoulding power member 31 passes through the through hole and is connected to the movable plate; the base 43 is connected to the surface of the support plate 42 away from the lower template 10, the base 43 has a groove, the lifting plate 41 can be lifted and lowered in the groove, and the demoulding power member 31 is installed on the side of the base 43; the first guide column 45 extends along the first direction X, one end of the first guide column 45 is connected to the lifting plate 41, and the other end passes through the support plate 42 and is inserted into the lower template 10; the elastic member 44 is located between the lifting plate 41 and the support plate 42, and is wound around the first guide column 45. That is, by providing the first guide column 45, the lifting plate 41 can only move in a predetermined direction, so that the lifting plate 41 will not deviate during the movement, ensuring that the injection molded product is accurately ejected. In addition, the elastic member 44 can be a spring, so that after the lifting plate 41 moves upward to a position, the compressed spring provides a rebound force, thereby accelerating the return of the lifting plate 41.

[0064] In one embodiment, the quick mold changing device also includes a detection member 80 and a controller. The detection member 80 is installed on the lower template 10 and is located on the moving path of the movable plate. The controller is electrically connected to the detection member 80 and the demolding power member 31. The controller is configured to control the demolding power member 31 based on the detection signal of the detection member 80. That is to say, when the detection member 80 detects that the movable plate has moved upward to the maximum stroke, the detection member 80 transmits the detection signal to the controller, and the controller controls the demolding power member 31 to stop driving upward to prevent the lifting plate 32 from moving upward and colliding with the lower template 10, resulting in damage to the mold. It should be noted that the detection member 80 can adopt a proximity switch or other detection components in the prior art, and there is no limitation on this.

[0065] Please refer to Figure 7 In one embodiment, the quick mold change device further includes an upper mold plate 90 and a second guide column 50. The upper mold plate 90 is provided with a mounting hole, and a guide sleeve is embedded in the mounting hole. The second guide column 50 is connected to the lower mold plate 10 along the first direction X, and at least part of the second guide column 50 is used to be sleeved with the guide sleeve. In this way, the upper mold plate 90 and the lower mold plate 10 can be quickly connected, which is conducive to improving production efficiency.

[0066] It can be understood that the above embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, the above technical features can be freely combined without departing from the concept of the present invention, and several deformations and improvements can be made, which all belong to the protection scope of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should belong to the coverage of the claims of the present invention.

Claims

1. A quick mold changing device, characterized in that: include: A lower mold plate, which is provided with a mold cavity extending along a first direction and a cavity channel located outside the mold cavity, wherein the cavity channel is connected to the mold cavity; A movable mold assembly, comprising a mold core seat arranged in the mold cavity, a locking member slidably arranged in the cavity, and a movable mold core, wherein the movable mold core can move back and forth along the first direction, and the locking member can switch between a locked position and an unlocked position; A demoulding assembly, comprising a moving plate, a demoulding power member, a demoulding column and a supporting column, wherein the moving plate is located below the lower mold plate and is connected to the output shaft of the demoulding power member, and the moving plate is provided with a demoulding column and a supporting column extending along the first direction, and one end of the demoulding column away from the moving plate extends into the mold cavity, passes through the mold core seat and is connected to the movable mold core, and one end of the supporting column away from the moving plate extends into the cavity and is connected to the locking member; Among them, when the movable mold core is stacked on the mold core seat and the locking piece is in the locking position, the locking piece locks the movable mold core; when the movable mold core is located above the mold core seat and the locking piece is in the unlocking position, the locking piece at least partially extends out of the cavity and is located on the outer peripheral side of the movable mold core, so that the locking piece releases the lock on the movable mold core.

2. The rapid mold change device according to claim 1, characterized in that: The channel surface has a first guide surface facing the side of the cavity, and the first guide surface is inclined relative to the plane where the first direction is located. The locking member has a second guide surface on the surface opposite to the mold core seat, and the second guide surface is inclined relative to the plane where the first direction is located. The second guide surface is in contact with the first guide surface to cooperate with each other for sliding, so that the locking member can switch between the locked position and the unlocked position.

3. The rapid mold change device according to claim 2, characterized in that: A slot is provided on the surface of the movable mold core facing the locking member, and a protrusion is provided on the surface of the locking member for contacting the movable mold core; when the locking member is in the locking position, the protrusion is inserted into the slot.

4. The rapid mold change device according to claim 1, characterized in that: The locking piece is provided with a connection port at one end connected to the support column, and a symmetrical slide bar is provided on the inner side wall of the connection port. The end of the support column away from the movable plate is concave to form a slide groove, and the slide groove cooperates with the slide bar.

5. The rapid mold change device according to claim 1, characterized in that: The movable mold assembly also includes: A positioning guide post, which is arranged on the surface of the mold core seat for connecting with the movable mold core along the first direction, and a positioning hole adapted to the positioning guide post is opened on the movable mold core; A heat-conducting column is arranged along the first direction at the middle of the surface of the mold core seat for connecting with the movable mold core, a through hole is opened in the middle of the movable mold core, and the positioning column is located at the periphery of the heat-conducting column.

6. The rapid mold change device according to claim 1, characterized in that: The movable mold core has an annular molding groove, and the molding groove is provided with a first plug hole and a second plug hole spaced apart along the circumferential direction. The first plug hole and the second plug hole are both used for plugging corresponding inserts.

7. The rapid mold change device according to any one of claims 1 to 6, characterized in that: The rapid mold changing device further comprises a lifting assembly, and the lifting assembly comprises: A lifting plate, which is located below the moving plate and can move back and forth along the first direction; An ejector pin extends along the first direction, one end of the ejector pin is connected to the lifting plate, and the other end of the ejector pin passes through the movable plate, the lower mold plate and the mold core seat and extends to the movable mold core, so as to eject the molded product from the movable mold core.

8. The rapid mold change device according to claim 7, characterized in that: The lifting assembly also includes: A support plate, which is located below the lower template and connected to the lower template, the support plate has a storage cavity, the movable plate is arranged in the storage cavity in a liftable manner, and a through hole communicating with the storage cavity is opened on the support plate along the first direction, and the output shaft of the demoulding power member passes through the through hole and is connected to the movable plate; A base, which is connected to the surface of the support plate away from the lower mold plate, the base has a groove, the lifting plate is escalably arranged in the groove, and the demoulding power member is installed on the side of the base; A first guide column extending along the first direction, one end of the first guide column being connected to the lifting plate, and the other end of the first guide column penetrating through the support plate and inserted into the lower template; An elastic member is located between the lifting plate and the supporting plate and is wound around the first guide column.

9. The rapid mold change device according to claim 1, characterized in that: The rapid mold changing device also includes: A detection member, which is mounted on the lower template and is located on the moving path of the moving plate; A controller is electrically connected to the detection member and the demoulding power member, and the controller is configured to control the demoulding power member based on a detection signal of the detection member.

10. The rapid mold change device according to claim 1, characterized in that: The rapid mold changing device also includes: An upper template is provided with a mounting hole, wherein a guide sleeve is embedded in the mounting hole; A second guide column is connected to the lower template along the first direction, and at least a part of the second guide column is used to be sleeved with the guide sleeve.

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