Injection mold for producing cap lining plug-in

Abstract

The utility model provides an injection mold for cap lining plug-in production, which belongs to the technical field of cap lining production and comprises a mold frame, a fixed mold arranged on the inner wall of the mold frame, a movable mold arranged in an inner cavity of the mold frame and opposite to the fixed mold, and a forming driving component arranged in the inner cavity of the mold frame and used for driving the movable mold to be closed. A mold connecting piece used for being integrally formed with a cap liner is arranged in an inner cavity of the movable mold in a penetrating mode, a demolding ejection piece opposite to the mold connecting piece is arranged on the inner wall of the mold frame, and a clamping assembly used for locking the mold connecting piece during mold closing is arranged on the side wall of the movable mold. And meanwhile, the mold connecting piece is unlocked through the clamping assembly, and the mold connecting piece is ejected out of the through hole of the movable mold through the demolding ejection piece, so that the mold connecting piece drives the integrally-formed cap liner to be separated from the movable mold from the interior of the mold cavity, mold sticking of the cap liner is avoided, operation in the demolding process of the integrally-formed cap liner and the inserting piece is more convenient, and therefore the efficiency of the machining process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cap lining production, in particular to an injection mold for producing cap lining plug-in units. Background Art

[0002] A hard hat is a headgear designed to protect the head from falling objects and other specific factors. It consists of a shell, lining, chin strap, and accessories. The lining is typically mass-produced using injection molds. The insert that connects the lining to the helmet is also produced using injection molds, and then snaps onto the helmet using the insert.

[0003] Related technology (publication number: CN220784687U) discloses an injection mold for producing helmet lining plug-ins. The disclosed technical solution is: using this injection mold for producing helmet lining plug-ins, four helmet lining plug-ins can be molded at one time, effectively improving the production efficiency of the helmet lining plug-ins. This injection mold for producing helmet lining plug-ins, through an auxiliary core-pulling component, realizes rapid core pulling of the helmet lining plug-ins, effectively avoiding the inconvenience of demolding, and improving the production quality of the helmet lining plug-ins.

[0004] In the above-mentioned disclosed technical solutions, the following problems are found in the relevant technologies: the cap lining and the plug-in connected to the cap shell in the prior art are injection molded separately, and then the cap lining and the plug-in are connected by a connector, and then the cap lining is fixed by the plug-in, which makes the processing more cumbersome, thereby affecting the efficiency. The cap lining and the plug-in formed by the connector are of low strength, and the connection is easily damaged. The integrally molded cap lining and plug-in not only improves the efficiency, but also enhances the overall stability. However, during demolding, due to batch injection molding production, the integrally molded cap lining occupies a large area, which will cause the molded cap lining to stick to the mold. For this reason, we propose a new injection mold for the production of safety helmet cap lining plug-ins.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background technology section of this application, and therefore may include information that does not constitute prior art known to ordinary technicians in this field. Utility Model Content

[0006] The present invention aims to solve at least one of the technical problems existing in the prior art or related art. In order to solve the problem of demolding the cap liner and insert in the prior art, the present invention provides an injection mold for producing the cap liner insert. The mold is formed by integrally forming the cap liner and insert and combined with an integral demolding structure to improve production efficiency. The specific technical solution is as follows:

[0007] An injection mold for producing a cap liner insert comprises a mold frame, an inner wall of the mold frame is provided with a fixed mold, an inner cavity of the mold frame is provided with a movable mold opposite to the fixed mold, the inner cavity of the mold frame is provided with a forming drive component for driving the movable mold to close the mold, the inner cavity of the movable mold is penetrated by a connecting mold piece for integrally forming with the cap liner, the inner wall of the mold frame is provided with a demolding top piece opposite to the connecting mold piece, and the side wall of the movable mold is provided with a clamping component for locking the connecting mold piece when closing the mold.

[0008] In the above technical solution, the clamping assembly includes a central axis arranged on the side wall of the movable mold, a scissors frame is arranged to rotate around the central axis, each end of the scissors frame is provided with a fixed clamping seat, and the two fixed clamping seats on the same side are symmetrically arranged on both sides of the connecting mold, and a positioning driving component is provided on the side wall of the movable mold to drive the fixed clamping seat to lock the connecting mold.

[0009] The positioning drive component includes a screw rotatably arranged on the side wall of the movable mold, the outer wall of the screw is symmetrically provided with external threads with opposite threads and the same pitch, the outer wall of the screw is symmetrically threaded with a positioning seat, and the positioning seat is provided with a positioning clamp opposite to the fixed clamp.

[0010] A guide rod parallel to the lead screw is provided on the side wall of the movable mold, and the positioning seat is sleeved on the outer wall of the guide rod.

[0011] The outer wall of the central shaft is sleeved with a spring, the end of the central shaft away from the movable mold is provided with a limit seat, and the spring is arranged between the limit seat and the scissors frame.

[0012] The molding drive component includes a threaded column rotatably arranged in the inner cavity of the mold frame, the outer wall of the threaded column is threadedly connected to a mold clamping displacement piece, and the mold clamping displacement piece is fixed to the side wall of the movable mold.

[0013] An anti-deflection guide rod parallel to the threaded column is embedded in the inner cavity of the mold frame, an anti-deflection guide seat is sleeved on the outer wall of the anti-deflection guide rod, and the anti-deflection guide seat is fixed to the side wall of the movable mold.

[0014] A material collecting box is provided below the movable mold.

[0015] A trapezoidal unloading platform fixed to the bottom of the inner wall of the mold frame is provided below the collecting box.

[0016] The end portion of the connecting mold member close to the fixed mold is made of rubber material.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: the injection mold for producing the cap liner plug-in is:

[0018] 1. When the end of the connecting mold part after passing through the inner cavity of the movable mold is flush with the opposite surface of the fixed mold, the connecting mold part is fixed by the clamping assembly, thereby ensuring the integrity of the cap lining processing process after the movable mold and the fixed mold are closed.

[0019] Second, during demolding, the movable mold is driven to move away from the fixed mold through the molding driving component, and the connecting mold is unlocked by the clamping component, and the connecting mold is ejected from the through hole of the movable mold by the demolding ejector, so that the connecting mold drives the integrally formed cap liner to separate from the movable mold from the mold cavity, avoiding the cap liner from sticking to the mold, making the demolding process of the integrally formed cap liner and the plug-in more convenient, thereby improving the efficiency of the processing process.

[0020] 3. When fixing the connecting mold during mold closing, the output shaft of the driving motor drives the screw to rotate, so that the two connecting plates respectively drive the two positioning clamps to move relative to each other, and the scissors frame is supported by the central axis, so that the other side of the scissors frame drives the other two fixed clamps to move relative to each other to fix the other horizontal connecting mold. After the mold closing is completed, the driving motor drives the screw to rotate in the opposite direction, so that the two groups of fixed clamps at the four ends of the scissors frame are moved away from the outer wall of the connecting mold, thereby ensuring that the connecting mold can be connected to the cap liner as an integrated component.

[0021] 4. In the process of rotating the lead screw to drive the two locating seats to move, the locating seats slide on the outer wall of the guide rod at the same time. The guide rod parallel to the lead screw ensures the stability of the moving direction of the locating seats, avoiding position deviation, thereby ensuring the stability of the moving direction of the locating seats, and further ensuring the stability of the connection between the fixed card seat and the connecting module.

[0022] 5. When the two positioning clamps are removed from the two fixed clamps respectively, the elastic force of the spring causes the two racks of the scissors rack to rotate relative to each other and reset, thereby removing the fixed clamps from the surface of the connecting mold, thereby avoiding interference with the demoulding movement of the connecting mold and ensuring the stability of the demoulding process.

[0023] 6. When closing and demolding, the output shaft of the motor drives the threaded column to rotate, so that the mold-closing displacement part threadedly connected on the outer wall of the threaded column drives the movable mold to move, making the mold closing and demolding operations more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of an injection mold for producing a cap liner plug-in according to the utility model. Figure 1 ;

[0025] Figure 2 This is a schematic diagram of the structure of an injection mold for producing a cap liner plug-in according to the utility model. Figure 2 ;

[0026] Figure 3This is a structural explosion diagram of an injection mold for producing a cap liner plug-in according to the utility model. Figure 1 ;

[0027] Figure 4 This is a structural explosion diagram of an injection mold for producing a cap liner plug-in according to the utility model. Figure 2 ;

[0028] Figure 5 for Figure 1 A local enlarged view of point A;

[0029] Figure 6 for Figure 1 A partial enlarged view of point B;

[0030] Figure 7 for Figure 1 A partial enlarged view of point C;

[0031] in, Figures 1 to 7 The correspondence between the figure marks and the component names is: 1-mold frame, 2-fixed mold, 3-movable mold, 4-connecting mold part, 5-demolding top part, 6-fixed clamping seat, 7-scissors frame, 8-threaded column, 9-collection box, 10-anti-deflection guide rod, 11-anti-deflection guide seat, 12-mold displacement part, 13-machine casing, 14-trapezoidal unloading platform, 15-base frame, 16-right angle connection part, 17-support column, 18-reinforcement rod, 19-motor, 20-spring spring, 21-center axis, 22-limit seat, 23-bracket, 24-fixed seat, 25-machine cover, 26-screw, 27-guide rod, 28-positioning seat, 29-connecting plate, 30-positioning clamp. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] The following is a combination of specific implementation cases and attached Figure 1-7 The present invention will be further described below, but the present invention is not limited to these embodiments.

[0034] An injection mold for producing cap liner inserts comprises a mold frame 1, with a fixed mold 2 disposed on its inner wall. A movable mold 3 is disposed within the mold frame 1, facing the fixed mold 2. The fixed mold 2 is securely attached to the inner wall on the left side of the mold frame 1, with the movable mold 3 disposed transversely to the fixed mold 2. The fixed mold 2 has the same shape and specifications as the movable mold 3. A cavity for integrally molding the cap liner and insert is defined on the surface of the fixed mold 2 facing the movable mold 3. An exhaust groove is provided on the surface of the fixed mold 2, communicating with the cavity. An injection hole is provided on the surface of the movable mold 3, extending through the cavity.

[0035] The inner cavity of mold frame 1 is equipped with a molding drive component that drives the movable mold 3 to close. The movable mold 3 and the fixed mold 2 are located on the same horizontal line. The molding drive component moves the movable mold 3 toward the fixed mold 2, making it fit the fixed mold 2. Then, the mold is processed through the injection hole in the movable mold 3. Because the fixed mold 2 is equipped with multiple interconnected mold cavities with cap liners and inserts integrally formed, the multiple cap liners and inserts are connected to each other during demolding after the movable mold 3 is removed from the surface of the fixed mold 2.

[0036] The inner cavity of the movable mold 3 is penetrated by a connecting mold piece 4 for integrally forming the cap liner. The inner wall of the mold frame 1 is provided with a demolding ejector 5 opposite to the connecting mold piece 4. The connecting mold piece 4 can be a cylindrical rod. Four connecting mold pieces 4 penetrate the inner cavity of the movable mold 3 near the four corners of the movable mold 3, allowing the connecting mold pieces 4 to pass through the inner cavity of the movable mold 3 and enter the inner cavity of the fixed mold 2. The demolding ejector 5 is fixed vertically on the inner wall of the mold frame 1 at a position opposite to the connecting mold piece 4. The demolding ejector 5 and the connecting mold piece 4 have the same shape and specifications, allowing the demolding ejector 5 to enter the through hole between the connecting mold piece 4 and the movable mold 3.

[0037] Support columns 17 are fixed to the inner wall of the mold frame 1 at a position transverse to the connecting mold element 4. Support columns 17 are vertically fixed to the inner wall of the mold frame 1 opposite the connecting mold element 4. Reinforcement rods 18 are fixedly installed at an angle between the outer bottom of support columns 17 and the inner wall of the mold frame 1. The triangular frame formed by reinforcement rods 18 and support columns 17 ensures the stability of the demolding top member 5, preventing positional deviation and ensuring the accurate positioning of the demolding top member 5 and the connecting mold element 4.

[0038] The sidewall of the movable mold 3 is equipped with a clamping assembly for locking the connecting mold piece 4 during mold closing. When the end of the connecting mold piece 4, after passing through the inner cavity of the movable mold 3, is flush with the opposite surface of the fixed mold 2, the clamping assembly secures the connecting mold piece 4, thus ensuring the integrity of the cap lining process after the movable mold 3 and the fixed mold 2 are closed.

[0039] When demolding after mold closing is completed, the forming drive member drives the movable mold 3 to move away from the fixed mold 2, and the clamping assembly unlocks the connecting mold 4. At this time, the connecting mold 4 and the cap liner are an integrated structure. Then, as the forming drive member drives the movable mold 3 to move, the movable mold 3 drives the extending connecting mold 4 to contact the demolding ejector 5. Since the demolding ejector 5 is fixed, the demolding ejector 5 ejects the connecting mold 4 from the through hole of the movable mold 3 during the continuous movement of the movable mold 3. The connecting mold 4 drives the integrally formed cap liner out of the mold cavity from the movable mold 3, preventing the cap liner from sticking to the mold. This makes the demolding process of the integrally formed cap liner and the insert more convenient, thereby improving the efficiency of the processing process.

[0040] Among them, the clamping assembly includes a central axis 21 arranged on the side wall of the movable mold 3. The central axis 21 is vertically fixed on the surface of the movable mold 3 away from the fixed mold 2. A scissors frame 7 is arranged to rotate around the central axis 21. The two racks of the scissors frame 7 are movably connected to the outside of the central axis 21 through the mounting hole opened in the center, so that the two racks of the scissors frame 7 can rotate relative to each other around the central axis 21. A fixed clamping seat 6 is provided at each end of the scissors frame 7, and the two fixed clamping seats 6 on the same side are symmetrically arranged on both sides of the connecting mold 4. Four arc-shaped fixed clamping seats 6 are respectively fixed to the four ends of the scissors frame 7, so that when the scissors frame 7 rotates relative to each other, the two groups of fixed clamping seats 6 on both sides move relative to each other or back to back.

[0041] A positioning drive member is provided on the side wall of the movable mold 3 to drive the fixed clamping seat 6 to lock the connecting mold piece 4. The positioning drive member is installed on the surface of the movable mold 3 opposite the inner wall of the mold frame 1, so that the positioning drive member drives the two fixed clamping seats 6 to move relative to each other, thereby clamping and fixing the portion of the connecting mold piece 4 that extends toward the inner wall of the mold frame 1 through the two relatively moving fixed clamping seats 6.

[0042] During mold closing, the connecting mold member 4 is slid within the through-hole of the movable mold 3, moving its end to a position flush with the surface of the movable mold 3 on the side facing the fixed mold 2. The positioning drive member then locks the connecting mold member 4 in place, with one end flush with the surface of the movable mold 3 and the other end extending out of the movable mold 3 along the inner wall of the mold frame 1. The molding member is then driven to close the movable mold 3 against the fixed mold 2. After the injection molding process is complete, the end of the connecting mold member 4 that enters the mold cavity connects to the molding cap insert.

[0043] During demoulding, the movable mold 3 is moved away from the fixed mold 2 by driving the molding member, so that the movable mold 3 drives the connecting mold part 4 extending outward to contact the demoulding ejector 5. Since the demoulding ejector 5 is fixed, the movable mold 3 continues to move. The demoulding ejector 5 ejects the connecting mold part 4 into the through hole of the movable mold 3, so that the connecting mold part 4 drives the integrally formed cap liner out of the mold cavity from the movable mold 3. The clamping assembly ensures the stability of the connection between the connecting mold part 4 and the cap liner plug-in, thereby ensuring the smoothness of the demoulding process.

[0044] It is worth noting that the positioning drive component includes a screw 26 rotatably mounted on the side wall of the movable mold 3. The outer wall of the screw 26 is symmetrically provided with external threads with opposite threads and the same pitch. The outer wall of the screw 26 is symmetrically threaded with a positioning seat 28. On the surface of the movable mold 3 where the scissors frame 7 is located, a bracket 23 is fixedly mounted. Two mutually parallel fixed seats 24 are vertically fixedly mounted on the surface of the bracket 23. Bearings are embedded in the opposite sides of the two fixed seats 24, and the two ends of the screw 26 are respectively embedded in the interior of the two bearings. A drive motor is fixed to one of the fixed seats 24 via a machine cover 25. The output shaft of the drive motor passes through the inner cavity of the fixed seat 24 and is fixedly connected to the corresponding end of the screw 26. The drive motor is electrically connected to an external power supply via a wire.

[0045] Two parts of external threads with opposite threads and the same pitch are symmetrically provided on the outer wall of the lead screw 26 from the center position to both sides. The two positioning seats 28 are connected to the two parts of the external threads of the lead screw 26 by respectively providing threaded through holes that penetrate the inner cavity. The two positioning seats 28 are moved relative to each other or back to back by rotating the lead screw 26. A positioning clamp 30 is provided on the positioning seat 28, which is opposite to the fixed card seat 6. A connecting plate 29 located above the fixed card seat 6 is fixedly installed on the side wall of the positioning seat 28, and a positioning clamp 30 is fixedly installed on the side of the connecting plate 29 facing the fixed card seat 6. The position of the positioning clamp 30 corresponds to the fixed card seat 6, so that the positioning clamp 30 will touch the fixed card seat 6 during the movement.

[0046] When fixing the connecting mold 4 during mold closing, the drive motor is connected to a power source so that the output shaft of the drive motor drives the screw 26 to rotate. The two positioning seats 28 threadedly connected to the outer wall of the screw 26 drive the two connecting plates 29 to move relative to each other, and the two connecting plates 29 respectively drive the two positioning clamps 30 to move relative to each other, so that the two relatively moving positioning clamps 30 push the two fixed clamps 6 on one side of the scissors frame 7 to move relative to each other. As the two fixed clamps 6 move relative to each other, the position of the connecting mold 4 is locked. Through the support of the scissors frame 7 by the central shaft 21, the other side of the scissors frame 7 drives the other two fixed clamps 6 to move relative to each other to fix the other horizontal connecting mold 4. The two horizontal connecting molds 4 are fixed at the same time, and then the mold is closed.

[0047] After mold closing, since the drive motor has a forward / reverse rotation adjustment function, the output shaft direction of the drive motor is adjusted. This causes the lead screw 26 to rotate in the opposite direction, causing the two positioning clamps 30 to move back to back, and the two sets of fixed clamps 6 at the four ends of the scissor frame 7 to move away from the outer wall of the connecting mold 4. This allows the connecting mold 4 to slide within the through hole of the movable mold 3, and then the molded cap liner and insert are demolded by the connecting mold 4.

[0048] In addition, a guide rod 27 is provided on the side wall of the movable mold 3, parallel to the lead screw 26, and a positioning seat 28 is sleeved on the outer wall of the guide rod 27. The two ends of the guide rod 27 are respectively fixed perpendicularly to the opposite surfaces of the two fixing seats 24, and the positioning seats 28 are movably sleeved on the outer wall of the guide rod 27 via a through hole formed through the inner cavity.

[0049] In the process of rotating the screw 26 to drive the two positioning seats 28 to move, the positioning seats 28 slide on the outer wall of the guide rod 27 at the same time. The guide rod 27 parallel to the screw 26 ensures the stability of the moving direction of the positioning seat 28, avoids position deviation, thereby ensuring the stability of the moving direction of the positioning seat 28, and further ensuring the stability of the connection between the fixed clamping seat 6 and the connecting module 4.

[0050] Furthermore, a spring 20 is sleeved onto the outer wall of the central shaft 21. A limit seat 22 is provided on the end of the central shaft 21 facing away from the movable mold 3. The spring 20 is positioned between the limit seat 22 and the scissor frame 7. The ends of the spring 20 are respectively fixed to the limit seat 22 and a rod of the scissor frame 7. The spring 20 is movably sleeved onto the exterior of the central shaft 21. When the two sets of fixed retainers 6 on either side of the scissor frame 7 rotate simultaneously relative to each other about the central shaft 21, the spring 20 generates an elastic force.

[0051] When the two positioning clamps 30 are removed from the two fixed clamps 6, the elastic force of the spring 20 causes the two rods of the scissor frame 7 to rotate relative to each other and reset. This allows the fixed clamps 6 to move away from the surface of the connecting mold 4, thereby avoiding interference with the demolding movement of the connecting mold 4 and ensuring a stable demolding process.

[0052] Furthermore, the molding drive component includes a threaded column 8 that is rotatably arranged in the inner cavity of the mold frame 1. The outer wall of the threaded column 8 is threadedly connected to a mold displacement member 12, and the mold displacement member 12 is fixed to the side wall of the movable mold 3. Bearings are embedded in the inner walls on both sides of the mold frame 1. The two ends of the threaded column 8 are respectively embedded in the inside of the two bearings. The mold displacement member 12 is connected to the threaded column 8 through a threaded hole provided in the center and passing through the inner cavity. A motor 19 is fixed to the outer wall of the mold frame 1 at a position corresponding to the threaded column 8 through a housing 13. The output shaft of the motor 19 passes through the inner cavity of the mold frame 1 and is fixedly connected to one end of the threaded column 8. The motor 19 is electrically connected to an external power supply via a wire.

[0053] When closing and demolding, the motor 19 is connected to the power supply so that the output shaft of the motor 19 drives the threaded column 8 to rotate, and the mold closing displacement part 12 threadedly connected on the outer wall of the threaded column 8 drives the movable mold 3 to move, making the mold closing and demolding operations more convenient.

[0054] The inner cavity of the mold frame 1 is embedded with an anti-deflection guide rod 10 parallel to the threaded column 8. The outer wall of the anti-deflection guide rod 10 is sleeved with an anti-deflection guide seat 11, which is fixed to the side wall of the movable mold 3. The ends of the anti-deflection guide rod 10 are respectively fixed perpendicularly to the inner walls of the mold frame 1 on both sides. The anti-deflection guide seat 11 is movably sleeved on the outer side of the anti-deflection guide rod 10 through a through hole in the center that runs through the inner cavity.

[0055] When the threaded column 8 is rotated to cause the mold closing displacement member 12 to drive the movable mold 3 to move, the movable mold 3 simultaneously drives the anti-deflection guide seat 11 to slide against the outer wall of the anti-deflection guide rod 10, and the anti-deflection guide rod 10 is parallel to the threaded column 8. This ensures the stability of the moving direction of the movable mold 3, thereby ensuring the tight fit between the movable mold 3 and the fixed mold 2 during mold closing, and further ensuring the quality of the mold forming.

[0056] A material collection box 9 is located below the movable mold 3. Below the movable mold 3 and the fixed mold 2, a base frame 15 is fixedly mounted on the inner walls of the mold frame 1 on both sides. The material collection box 9 is fixed to the two base frames 15 via right-angle connectors 16. The right-angle connectors 16 are connected to the material collection box 9 and the base frames 15 by bolts, making the assembly and disassembly of the material collection box 9 more convenient.

[0057] A trapezoidal unloading platform 14 fixed to the bottom of the inner wall of the mold frame 1 is provided below the collection box 9. The hypotenuse of the trapezoidal unloading platform 14 makes the operation of the collection box 9 installation and removal process more convenient.

[0058] The end of the connecting mold part 4 close to the fixed mold 2 is set to rubber material. After the connecting mold part 4 of rubber material enters the inner cavity of the fixed mold 2, it is connected with the integrally formed cap liner to ensure the stability of the demoulding process.

[0059] This embodiment is an injection mold for producing a cap liner insert, and its working principle is as follows: first, the connecting mold part 4 is passed through the through hole of the movable mold 3, and the end of the connecting mold part 4 is extended to a position flush with the side of the movable mold 3 facing the mold cavity.

[0060] The output shaft of the drive motor then drives the lead screw 26 to rotate, causing the two positioning seats 28 threadedly connected to the outer wall of the lead screw 26 to drive the two connecting plates 29 to move relative to each other, causing the two connecting plates 29 to respectively drive the two positioning clamps 30 to move relative to each other, so that the two relatively moving positioning clamps 30 push the two fixed clamps 6 on one side of the scissors frame 7 to move relative to each other. As the two fixed clamps 6 move relative to each other, the position of the connecting mold 4 is locked.

[0061] Then, the motor 19 is connected to a power source, so that the output shaft of the motor 19 drives the threaded column 8 to rotate, and the mold-closing displacement member 12 threadedly connected to the outer wall of the threaded column 8 drives the movable mold 3 to move, so that the movable mold 3 is closed with the fixed mold 2. Then, the material is injected into the mold cavity through the injection hole on the movable mold 3.

[0062] Then adjust the output shaft direction of the driving motor so that the screw 26 rotates in the opposite direction, so that the two positioning clamps 30 move back to back, so that the two sets of fixed clamps 6 at the four ends of the scissors frame 7 are removed from the outer wall of the connecting mold 4, so that the connecting mold 4 can slide in the through hole with the movable mold 3.

[0063] Finally, the output shaft of motor 19 rotates threaded post 8, causing the mold displacement member 12, threadedly connected to the outer wall of threaded post 8, to move movable mold 3. As movable mold 3 moves away from fixed mold 2, it drives the extended connecting mold member 4 into contact with the ejector 5. Because the ejector 5 is stationary, as movable mold 3 continues to move, the ejector 5 pushes the connecting mold member 4 out of the through hole of movable mold 3, causing the connecting mold member 4 to pull the integrally formed cap liner out of the mold cavity and away from movable mold 3. After demolding, the integrally formed cap liner and insert fall into a collection bin 9 for collection.

[0064] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "two ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0065] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one such feature.

[0066] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0067] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An injection mold for producing a cap liner insert, comprising a mold frame (1), an inner wall of the mold frame (1) being provided with a fixed mold (2), an inner cavity of the mold frame (1) being provided with a movable mold (3) opposite to the fixed mold (2), characterized in that: The inner cavity of the mold frame (1) is provided with a molding driving member for driving the movable mold (3) to close the mold; the inner cavity of the movable mold (3) is provided with a connecting mold piece (4) for integrally forming with the cap lining; the inner wall of the mold frame (1) is provided with a demoulding top piece (5) opposite to the connecting mold piece (4); and the side wall of the movable mold (3) is provided with a clamping component for locking the connecting mold piece (4) when closing the mold.

2. The injection mold for producing a cap liner insert according to claim 1, characterized in that: The clamping assembly comprises a central axis (21) arranged on the side wall of the movable mold (3); a scissor frame (7) is rotatably arranged around the central axis (21); a fixed clamping seat (6) is arranged at each end of the scissor frame (7); two fixed clamping seats (6) on the same side are symmetrically arranged on both sides of the connecting mold (4); and a positioning driving component for driving the fixed clamping seat (6) to lock the connecting mold (4) is arranged on the side wall of the movable mold (3).

3. The injection mold for producing a cap liner insert according to claim 2, characterized in that: The positioning drive component includes a lead screw (26) rotatably arranged on the side wall of the movable mold (3), the outer wall of the lead screw (26) is symmetrically provided with external threads with opposite threads and the same pitch, the outer wall of the lead screw (26) is symmetrically threadedly connected to a positioning seat (28), and the positioning seat (28) is provided with a positioning clamp (30) opposite to the fixed clamp (6).

4. The injection mold for producing a cap liner insert according to claim 3, characterized in that: A guide rod (27) parallel to the lead screw (26) is provided on the side wall of the movable mold (3), and the positioning seat (28) is sleeved on the outer wall of the guide rod (27).

5. The injection mold for producing a cap liner insert according to claim 2, characterized in that: A spring spring (20) is sleeved on the outer wall of the central shaft (21); a limit seat (22) is provided at the end of the central shaft (21) away from the movable mold (3); and the spring spring (20) is provided between the limit seat (22) and the scissors frame (7).

6. The injection mold for producing a cap liner insert according to claim 1, characterized in that: The molding drive component comprises a threaded column (8) rotatably arranged in the inner cavity of the mold frame (1); the outer wall of the threaded column (8) is threadedly connected to a mold displacement member (12); and the mold displacement member (12) is fixed to the side wall of the movable mold (3).

7. The injection mold for producing a cap liner insert according to claim 6, characterized in that: An anti-deflection guide rod (10) parallel to the threaded column (8) is embedded in the inner cavity of the mold frame (1), and an anti-deflection guide seat (11) is sleeved on the outer wall of the anti-deflection guide rod (10), and the anti-deflection guide seat (11) is fixed to the side wall of the movable mold (3).

8. The injection mold for producing a cap liner insert according to claim 1, characterized in that: A material collecting box (9) is provided below the movable mold (3).

9. The injection mold for producing a cap liner insert according to claim 8, characterized in that: A trapezoidal unloading platform (14) fixed to the bottom of the inner wall of the mold frame (1) is provided below the collecting box (9).

10. The injection mold for producing a cap liner insert according to claim 1, characterized in that: The end of the connecting mold part (4) close to the fixed mold (2) is made of rubber material.

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