Injection mold for automobile handle

Abstract

The invention relates to the technical field of secondary injection molds, and discloses an injection mold of an automobile handle, the injection mold comprises a static mold, a movable mold and an ejector plate, a primary cavity is arranged above the static mold and the movable mold, a secondary cavity is arranged below the static mold and the movable mold, a telescopic and rotatable clamping core is arranged in the center of the movable mold, and the telescopic direction of the clamping core is parallel to the mold opening direction of the movable mold; the rotating shaft is collinear with the telescopic direction, and the primary cavity and the secondary cavity are in axial symmetry according to the rotating axis of the clamping core. Compared with the prior art, the injection mold has the advantages that after primary mold opening, a primary injection molding part is automatically transferred from the upper cavity to the lower secondary cavity, complex rotation of the whole mold frame or use of external equipment is avoided, the mold structure is simplified, primary injection molding and secondary injection molding can be synchronously carried out, waiting for the end of a single process is not needed, and the production efficiency is improved. And the production cycle is shortened, stretching and retracting and 180-degree rotation of the clamping core can be achieved only through driving of the ejection plate, meanwhile, a product obtained after secondary injection molding is automatically ejected out, and an additional driving assembly is not needed.

Description

Technical Field

[0001] This invention relates to the field of secondary injection mold technology, specifically to an injection mold for an automobile handle. Background Technology

[0002] Car roof handles are important functional and decorative components inside automobiles, and their production typically employs injection molding. For roof handles with high aesthetic requirements (such as a 360-degree full coverage of soft material in the central gripping area), a two-color (or two-material) injection molding technique is often used. This involves first injection molding the rigid plastic frame of the handle, and then covering a specific area of ​​it with a layer of soft material (such as PU, TPE, etc.) to enhance the tactile feel and aesthetics.

[0003] Traditional two-color molds typically require two fixed mold cavities and two identical moving mold cavities. For parts that require both the moving and fixed molds to participate in two injection cycles to achieve 360-degree coverage (such as ceiling handles), traditional structures are difficult to implement. This usually necessitates lifting and rotating the first-injection part 180 degrees, or rotating the entire lower mold 180 degrees. This results in an exceptionally complex mold structure, extremely high manufacturing precision requirements, and difficult debugging, while also increasing mold cost and maintenance complexity.

[0004] Conventional two-color injection molds cannot perform primary and secondary injection simultaneously, resulting in limited efficiency during production. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that the existing two-color injection molds are complex and have limited production efficiency when used to produce plastic car roof handles. The present invention provides an injection mold for car handles.

[0006] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows: an injection mold for an automobile handle, comprising a stationary mold, a moving mold, and an ejector plate, wherein the moving mold is driven to move by the mold opening and closing mechanism of the injection molding machine, and the ejector plate is driven to move by the ejection mechanism of the injection molding machine. A primary cavity is provided above the stationary mold and the moving mold, and a secondary cavity is provided below the stationary mold. A retractable and rotatable clamping core is provided at the center of the moving mold. The retraction direction of the clamping core is parallel to the mold opening direction of the moving mold, and the rotation axis is collinear with the retraction direction. The primary cavity and the secondary cavity are symmetrical about the rotation axis of the clamping core.

[0007] The clamping core has vertically extending clamping arms on both sides. The clamping arms are equipped with a retractable fixing pin for fixing the injection molded part and a spring ejector for ejecting the injection molded part. The ends of the clamping arms extend into the primary cavity and the secondary cavity. When the primary cavity is being injected, the fixing pin extends to fix the injection molded part to the clamping arm. After the primary molding is completed, the moving mold opens, and at the same time, the clamping core extends and rotates to align the primary injection molded part with the secondary cavity and retracts, fixing the primary injection molded part in the secondary cavity and closing the mold for secondary injection. After the secondary injection is completed, the moving mold opens again, and at the same time, the clamping core extends and rotates. During the rotation, the fixing pin that fixes the secondary injection molded part retracts while the spring ejector ejects the secondary injection molded part.

[0008] Furthermore, the moving mold is provided with a sleeve, which consists of a front sleeve and a rear sleeve. After the front sleeve and the rear sleeve are joined together to form a sleeve, the sleeve has straight grooves on both horizontal sides and spiral grooves on both vertical sides. The starting point of the spiral groove is connected to the middle of one side of the straight groove, and the ending point is connected to the end of the straight groove on the other side. The starting point and the ending point of the spiral groove are 180° apart with respect to the sleeve axis. The root of the clamping core is cylindrical and sleeved inside the sleeve. The ends of the root of the clamping core are provided with spring-extended pins on both sides. The pins slide in the straight groove and the spiral groove. The center of the ejector plate has an extension post that extends into the sleeve and is rotatably connected to the end of the root of the clamping core.

[0009] Furthermore, the sleeve has multiple guide rods on both sides, and the guide rods are slidably connected to a switching slider. The switching slider has a groove and is composed of a first oblique line segment, a first straight line segment, a second oblique line segment, and a second straight line segment connected in sequence. The side of the switching slider has a locking slider that can be fitted into the straight line groove. The first straight line segment is farther away from the locking slider, and the second straight line segment is closer to the locking slider. The extension rods on both sides of the extension column have extension rods. The second straight line segment is close to the end of the spiral groove. The end of the extension rod extends to the switching slider and has a sliding column that slides in the groove of the switching slider.

[0010] Furthermore, a fan-shaped groove is provided on one side of the end face at the rotatable connection between the extension column and the clamping core. The clamping core is provided with a release rod of a spring pin. The clamping core is provided with an inner cavity one, and the clamping arm is provided with an inner cavity two. The two ends of the inner cavity one are connected to the inner cavity two. One end of the release rod extends into the inner cavity one and is slidably connected to a connecting rod, while the other end is pressed against the end face of the extension rod.

[0011] Furthermore, an ejector slider is slidably provided at the end of the inner cavity two, the root of the spring push rod is connected to the ejector slider, the root of the fixing pin extends into the inner cavity two and is provided with an inclined unlocking groove, and slide rods that cooperate with the unlocking grooves are provided on both sides of the ejector slider. A lever is rotatably connected in the inner cavity two, one end of the lever is rotatably connected to the ejector slider, and the other end is rotatably connected to the connecting rod.

[0012] Compared with the prior art, the present invention has the following advantages: Using a retractable and rotatable clamping core, the primary injection molded part is automatically transferred from the upper cavity to the lower secondary cavity after the mold is opened once, avoiding complex rotation of the entire mold base or the use of external equipment, thus simplifying the mold structure.

[0013] The primary and secondary injection molding processes can be performed simultaneously. The clamping arms at both ends of the clamping core correspond to the primary and secondary cavities, respectively. While one side is undergoing secondary PU molding, the other side simultaneously completes the main body injection molding, eliminating the need to wait for the single process to finish and shortening the production cycle.

[0014] The extension and 180° rotation of the clamping core can be achieved with just the ejector plate drive, and the product after secondary injection molding can be automatically ejected without the need for additional drive components. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an injection mold for a car handle according to the present invention.

[0016] Figure 2 This is a schematic diagram of the static mold of an injection mold for an automobile handle according to the present invention.

[0017] Figure 3 This is a schematic diagram of a handle produced by an injection mold for an automotive handle according to the present invention.

[0018] Figure 4 This is a schematic diagram of the moving mold of an injection mold for an automobile handle according to the present invention.

[0019] Figure 5 This is a schematic diagram of the structure of the injection mold clamping core for an automobile handle according to the present invention.

[0020] Figure 6 This is a schematic diagram of the structure of the core holding part of the injection mold for an automobile handle according to the present invention.

[0021] Figure 7 This is a schematic diagram of the structure of the injection mold pin for an automobile handle according to the present invention.

[0022] Figure 8 This is a schematic diagram of the retracting release push rod structure of the injection mold for an automotive handle according to the present invention.

[0023] Figure 9 This is a schematic diagram of the structure of the injection mold for releasing the extension rod of an automobile handle according to the present invention.

[0024] Figure 10 This is a schematic diagram of the structure of the injection mold fixing pin for an automobile handle according to the present invention.

[0025] Figure 11 This is a schematic diagram of the ejector slider of the injection mold for an automobile handle according to the present invention.

[0026] Figure 12 This is a schematic diagram of the internal structure of the moving mold of an injection mold for an automobile handle according to the present invention.

[0027] Figure 13 This is an exploded structural diagram of the moving mold of an injection mold for an automobile handle according to the present invention.

[0028] Figure 14 This is a schematic diagram of the ejector plate of an injection mold for an automobile handle according to the present invention.

[0029] Figure 15 This is a schematic diagram of the structure of an injection mold sleeve for an automobile handle according to the present invention.

[0030] Figure 16 This is a schematic diagram of the structure of the injection mold switching slider for an automotive handle according to the present invention.

[0031] Figure 17 This is a schematic diagram of the structure of the injection mold extension column of an automobile handle according to the present invention.

[0032] Figure 18 This is a schematic diagram of the cooperation between the injection mold extension column and the release push rod of an automobile handle according to the present invention.

[0033] Figure 19 yes Figure 18 A magnified structural diagram of point a.

[0034] Figure 20 This is a schematic diagram showing the position of the pin during injection molding of an injection mold for a car handle according to the present invention.

[0035] Figure 21 yes Figure 20 A magnified structural diagram at point b.

[0036] Figure 22 yes Figure 20 A schematic diagram showing the clamping core extending at point b.

[0037] Figure 23 This is a schematic diagram showing the position of the pin in the injection mold clamping core of a car handle according to the present invention before rotation.

[0038] Figure 24 yes Figure 23 A magnified structural diagram at point c.

[0039] Figure 25 yes Figure 23 A schematic diagram of the clamping core at point c before rotation.

[0040] Figure 26 This is a schematic diagram showing the position of the pin before the rotation of the injection mold clamping core of a car handle according to the present invention is completed.

[0041] Figure 27 yes Figure 26 A magnified structural diagram at point d.

[0042] Figure 28 This is a schematic diagram showing the position of the pin when the clamping core of the injection mold for a car handle retracts according to the present invention.

[0043] Figure 29 yes Figure 28 A magnified structural diagram at point e in the middle.

[0044] Figure 30 This is a schematic diagram showing the position of the pin before the end of the retraction of the clamping core of the injection mold for a car handle according to the present invention.

[0045] Figure 31 yes Figure 30 A magnified structural diagram at point f.

[0046] Figure 32 yes Figure 30 A schematic diagram of the anti-rotation slider at point f and the anti-rotation groove.

[0047] As shown in the figure: 1. Stationary mold, 2. Moving mold, 3. Clamping core, 4. Ejector plate, 5. Primary cavity, 6. Secondary cavity, 7. Handle, 8. Rotary shaft assembly mounting slot, 9. Rotary shaft hole, 10. Clamping arm, 11. Fixing pin, 12. Spring ejector rod, 13. End cap, 14. Inner cavity one, 15. Inner cavity two, 16. Release ejector rod, 17. Connecting rod, 18. Pulley, 19. Pin, 20. Anti-rotation slider, 21. Ejector slider, 22. Slide... 23. Rod, 24. Unlocking Slide, 25. Extension Column, 26. Extension Mounting Block, 27. Sleeve, 28. Switching Slider, 29. Extension Rod, 30. Slide Column, 31. Front Sleeve, 32. Rear Sleeve, 33. Straight Slot, 34. Spiral Slot, 35. Guide Rod, 36. Inclined Segment 1, 37. Straight Segment 1, 38. Inclined Segment 2, 39. Straight Segment 2, 40. Guide Hole, 41. Locking Slider, 42. Anti-rotation Slide, 43. Fan-shaped Groove. Detailed Implementation

[0048] The present invention will now be described in further detail with reference to the accompanying drawings.

[0049] Combined with appendix Figure 1 Appendix Figure 2 Appendix Figure 3 and attached Figure 4An injection mold for an automotive handle includes a stationary mold 1, a moving mold 2, and an ejector plate 4. The moving mold 2 is driven to move by the mold opening and closing mechanism of the injection molding machine, and the ejector plate 4 is driven to move by the ejection mechanism of the injection molding machine. A primary cavity 5 is provided above the stationary mold 1 and the moving mold 2, and a secondary cavity 6 is provided below. A retractable and rotatable clamping core 3 is provided at the center of the moving mold 2. The retraction direction of the clamping core 3 is parallel to the mold opening direction of the moving mold 2, and the rotation axis is collinear with the retraction direction. The primary cavity 5 and the secondary cavity 6 are axially symmetrical about the rotation axis of the clamping core 3.

[0050] Combined with appendix Figure 1 Appendix Figure 2 Appendix Figure 3 and attached Figure 4 The clamping core 3 has vertically extending clamping arms 10 on both sides. The clamping arms 10 are equipped with a retractable fixing pin 11 for fixing the injection molded part and a spring ejector rod 12 for ejecting the injection molded part. The ends of the clamping arms 10 extend into the primary cavity 5 and the secondary cavity 6. When the primary cavity 5 is being injected, the fixing pin 11 extends to fix the injection molded part to the clamping arm 10. After the primary molding is completed, the moving mold 2 opens, and at the same time, the clamping core 3 extends and rotates to align the primary injection molded part with the secondary cavity 6 and retracts, fixing the primary injection molded part in the secondary cavity 6 and closing the mold for secondary injection. After the secondary injection is completed, the moving mold 2 opens again, and at the same time, the clamping core 3 extends and rotates. During the rotation, the fixing pin 11 that fixes the secondary injection molded part retracts while the spring ejector rod 12 ejects the secondary injection molded part.

[0051] Combined with appendix Figure 3 and attached Figure 4 This device is used to produce a handle 7 for automobile roofs. It has a pivot assembly mounting groove 8 at both ends for subsequent installation of a spring pivot mechanism for flipping the handle 7. The pivot assembly mounting groove 8 has pivot holes 9 on both sides for connecting with the pivot of the spring pivot mechanism. Except for the inner surface of the pivot assembly mounting groove 8, the entire handle 7 is surface coated with PU through a secondary injection molding process. Correspondingly, the outer contour of the clamping arm 10 corresponds to the contour of the cavity of the pivot assembly mounting groove 8, and the contour of the fixing pin 11 corresponds to the contour of the pivot hole 9. The primary cavity 5 is used for injection molding of the main body of the handle 7, and the secondary cavity 6 is used for injection molding of the PU coating layer on the outer surface of the handle 7.

[0052] Based on the above structure, when this device is working, the handle 7 body is first injection molded in the primary cavity 5. After the primary injection is completed, the mold is opened and the clamping core 3 is extended and rotated to bring the handle 7 body out of the primary cavity 5 and align it with the secondary cavity 6 through rotation. Then, the clamping core 3 retracts and the handle 7 body enters the secondary cavity 6 on the moving mold 2. Subsequently, the mold is closed and the outer surface of the handle 7 body is injection molded again. Since the fixing pin 11 can lock the pivot hole 9, the handle 7 body will not fall off or shift during the movement of the clamping core 3. After the secondary injection is completed, the mold is opened again and the clamping core 3 is extended and rotated again. During this rotation, when the clamping core 3 rotates to a specific position, the structure of this device can cause the fixing pin 11 at the end of the clamping arm 10 connected to the secondary injection-molded handle 7 to retract and the spring push rod 12 to push out, while the other end will not move. In this way, the handle 7 that has completed the secondary injection is pushed out.

[0053] While performing the above actions, since both ends of the clamping core 3 have clamping arms 10, one end is performing secondary injection molding in the secondary cavity 6 while the other end is performing primary injection molding in the primary cavity 5. In this way, continuous operation of primary and secondary injection molding is achieved.

[0054] The mold opening and closing mechanism, ejection mechanism, and positioning rods required for the injection, runner, sprue, and clamping core 3 telescopic structure required for the operation of this device are common injection mold technologies and will not be further described in this application.

[0055] Combined with appendix Figure 6 Appendix Figure 12 Appendix Figure 13 Appendix Figure 14 and attached Figure 15 The moving mold 2 is provided with a sleeve 26, which consists of a front sleeve 30 and a rear sleeve 31. The front sleeve 30 is mounted on the moving mold 2, and the moving mold 2 is also provided with an extension mounting block 25 connected to the rear sleeve 31. After the front sleeve 30 and the rear sleeve 31 are joined to form the sleeve 26, the sleeve 26 has straight grooves 32 on both horizontal sides and spiral grooves 33 on both vertical sides. The starting point of the spiral groove 33 is connected to the middle of one side of the straight groove 32, and the ending point is connected to the other side of the straight groove 32. The end of the groove 32 is connected. The starting point and the ending point of the spiral groove 33 are 180° apart with respect to the axis of the sleeve 26. The root of the clamping core 3 is cylindrical and sleeved inside the sleeve 26. The two sides of the root end of the clamping core 3 are provided with spring-extended pins 19. The pins 19 slide in the straight groove 32 and the spiral groove 33. The center of the ejector plate 4 is provided with an extension post 24 that extends into the sleeve 26 and is rotatably connected to the root end of the clamping core 3. The top of the pin 19 is provided with an anti-rotation slider 20.

[0056] Combined with appendix Figure 16 and attached Figure 17The sleeve 26 has multiple guide rods 34 on both sides, and the guide rods 34 are slidably connected to a switching slider 27. The switching slider 27 has guide holes 39 that cooperate with the guide rods 34. The switching slider 27 has a sliding groove, which is composed of oblique line segment 1 35, straight line segment 1 36, oblique line segment 2 37 and straight line segment 2 38 connected in sequence. The side of the switching slider 27 has a locking slider 40 that can be fitted into the straight line groove 32. The inner surface of the locking slider 40 has an anti-rotation groove 41. The straight line segment 1 36 is farther away from the locking slider 40, and the straight line segment 2 38 is closer to the locking slider 40. The extension column 24 has extension rods 28 on both sides. The straight line segment 2 38 is close to the end of the spiral groove 33. The end of the extension rod 28 extends to the switching slider 27 and has a sliding column 29 that slides in the sliding groove of the switching slider 27.

[0057] Furthermore, a return spring is provided between the ejector plate 4 and the inner wall surface of the moving mold 2 on the side where the sleeve 26 is installed. When there is no power input to the ejector mechanism of the injection molding machine, the return spring pushes the ejector plate 4 away from the sleeve 26. Based on the above structure, it can be seen that when there is no power input to the ejector mechanism during the injection molding process, the ejector plate 4 drives the clamping core 3 to retract inward via the extension rod 28, as shown in the attached diagram. Figure 19 and attached Figure 20 As shown, the pin 19 is located at the end of the straight groove 32, while the sliding pin 29 is located at the end of the inclined segment 35, and the locking slider 40 is located outside the straight groove 32.

[0058] Combined with appendix Figure 21 Appendix Figure 22 Appendix Figure 23 Appendix Figure 24 Appendix Figure 25 Appendix Figure 26 and attached Figure 27 When the device needs to open the mold and rotate the clamping core 3, the ejector plate 4 moves toward the sleeve 26 by controlling the ejection mechanism of the injection molding machine. During the ejection of the clamping core 3, the pin 19 slides in the straight groove 32, and the clamping core 3 cannot rotate. At the same time, the sliding column 29, in conjunction with the inclined segment 35 and the straight segment 36, moves the switching slider 27 and keeps the locking slider 40 embedded in the straight groove 32. When the pin 19 moves to the point where the starting point of the spiral groove 33 connects with the middle of the straight groove 32, the pin 19 enters the spiral groove 33 due to the obstruction and guidance of the locking slider 40, causing the clamping core 3 to start rotating. When the pin 19 is completely in the spiral groove 33, the sliding column 29, in conjunction with the inclined segment 37, causes the locking slider 40 to leave the straight groove 32. As the pin 19 moves along the spiral groove 33 and finally reaches the end of the spiral groove 33, the clamping core 3 extends outward and rotates 180°, so that the handle 7 body that has left the primary cavity 5 is aligned with the secondary cavity 6.

[0059] Combined with appendix Figure 28 Appendix Figure 29 Appendix Figure 30 Appendix Figure 31 and attached Figure 32 When the clamping core 3 rotates and contacts the handle 7 body to align with the secondary cavity 6, the ejection mechanism of the injection molding machine is controlled again to move the ejector plate 4 away from the sleeve 26. During this process, the sliding column 29 is located in the second straight section 38, keeping the locking slider 40 outside the straight groove 32, and the pin 19 slides into the straight groove 32, causing the clamping core 3 to drive the handle 7 body to retract inward and not rotate, maintaining alignment with the secondary cavity 6, until the sliding column 29 enters the second inclined section 37, causing the locking slider 40 to move towards the straight groove 32. During this process, the locking slider 4... The spring force of the resisting pin 19 pushes the pin 19 inward. The anti-rotation slider 20 at the end of the pin 19 engages with the anti-rotation groove 41 on the locking slider 40, preventing the pin 19 from being unable to contact the straight groove 32 after being squeezed back, thus maintaining the lock on the rotational movement of the clamping core 3. As the pin 19 continues to move, the locking slider 40 can no longer squeeze the pin 19, and the pin 19 re-enters the straight groove 32 and eventually moves to the end of the straight groove 32. At this time, the clamping core 3 drives the handle 7 body to fully enter the secondary cavity 6 for secondary injection molding.

[0060] Combined with appendix Figure 5 Appendix Figure 6 Appendix Figure 7 Appendix Figure 12 Appendix Figure 17 Appendix Figure 18 and attached Figure 19 The extension column 24 and the clamping core 3 are connected by a fan-shaped groove 42 on one side of the end face. The clamping core 3 is provided with a release rod 16 for a spring pin. The clamping core 3 is provided with an inner cavity 14 and the clamping arm 10 is provided with an inner cavity 25. The two ends of the inner cavity 14 are connected to the inner cavity 25. One end of the release rod 16 extends into the inner cavity 14 and is slidably connected to a connecting rod 17. The other end is pressed against the end face of the extension rod 28. The entire clamping core 3 is provided with end caps 13 to close the inner cavity 14 and the inner cavity 25.

[0061] Combined with appendix Figure 8 Appendix Figure 9 Appendix Figure 10 and attached Figure 11 The inner cavity 15 has a sliding ejector slider 21 at its end. The root of the spring push rod 12 is connected to the ejector slider 21. The root of the fixing pin 11 extends into the inner cavity 15 and is provided with an inclined unlocking groove 23. The ejector slider 21 has sliding rods 22 on both sides that cooperate with the unlocking groove 23. The inner cavity 15 is rotatably connected to a lever 18. One end of the lever 18 is rotatably connected to the ejector slider 21, and the other end is rotatably connected to the connecting rod 17. By setting the inclination angle of the unlocking groove 23, the ejector slider 21 drives the spring push rod 12 to extend while the fixing pin 11 retracts.

[0062] During the process of the clamping core 3 driving the finished handle 7 after secondary injection molding to rotate from the secondary cavity 6 to the primary cavity 5, the release rod 16 rotates with the clamping core 3 and abuts against the end face of the extension rod 28. By setting the fan-shaped groove 42 at a specific angle, the release rod 16 rotates and fits into the fan-shaped groove 42 during the process of the finished handle 7 rotating from the secondary cavity 6 to the primary cavity 5. The release rod 16 extends outward under the elastic force of the spring, thereby driving the lever 18 to rotate through the connecting rod 17, thereby actuating the ejector slider 21. At the same time, the fixing pin 11 retracts while the spring rod 12 extends outward to eject the finished handle 7. This causes the product on the clamping arm 10, which was originally connected to one end of the finished handle 7, to be peeled off and re-enter the primary cavity 5 for the next round of injection molding.

[0063] The edge of the fan-shaped groove 42 is made into a gentle slope, so that the release rod 16 can smoothly enter and leave the fan-shaped groove 42 as it rotates with the clamping core 3.

[0064] The present invention and its embodiments have been described above. This description is not restrictive, and the actual structure is not limited thereto. In conclusion, if those skilled in the art, inspired by this description, design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the scope of protection of this invention.

Claims

1. An injection mold for a car handle, comprising a stationary mold (1), a moving mold (2), and an ejector plate (4), wherein the moving mold (2) is driven to move by the mold opening and closing mechanism of the injection molding machine, and the ejector plate (4) is driven to move by the ejection mechanism of the injection molding machine; a primary cavity (5) is provided above the stationary mold (1) and the moving mold (2), and a secondary cavity (6) is provided below; a retractable and rotatable clamping core (3) is provided at the center of the moving mold (2); the retraction direction of the clamping core (3) is parallel to the mold opening direction of the moving mold (2), and the rotation axis is collinear with the retraction direction; the primary cavity (5) and the secondary cavity (6) are symmetrical about the rotation axis of the clamping core (3); characterized in that: The clamping core (3) has clamping arms (10) extending vertically on both sides. The clamping arms (10) are equipped with a fixing pin (11) that fixes the injection molded part and is retractable, and a spring ejector rod (12) that ejects the injection molded part. The end of the clamping arm (10) extends into the primary cavity (5) and the secondary cavity (6). When the primary cavity (5) is being injected, the fixing pin (11) extends to fix the injection molded part to the clamping arm (10). After the primary molding is completed, the moving mold (2) opens the mold. At the same time, the clamping core (3) extends and rotates to align the primary injection molded part with the secondary cavity (6) and retracts to fix the primary injection molded part in the secondary cavity (6) and close the mold for secondary injection. After the secondary injection is completed, the moving mold (2) opens the mold again. At the same time, the clamping core (3) extends and rotates. During the rotation, the fixing pin (11) that fixes the secondary injection molded part retracts while the spring ejector rod (12) ejects the secondary injection molded part.

2. The injection mold for a car handle according to claim 1, characterized in that: The moving mold (2) is provided with a sleeve (26), which is composed of a front sleeve (30) and a rear sleeve (31). After the front sleeve (30) and the rear sleeve (31) are joined together to form the sleeve (26), the sleeve (26) has straight grooves (32) on both horizontal sides and spiral grooves (33) on both vertical sides. The starting point of the spiral groove (33) is connected to the middle of one side of the straight groove (32), and the ending point is connected to the end of the other side of the straight groove (32). The starting point and the ending point of the spiral groove (33) are 180° apart with respect to the axis of the sleeve (26).

3. The injection mold for a car handle according to claim 2, characterized in that: The root of the clamping core (3) is cylindrical and sleeved inside the sleeve (26). The ends of the root of the clamping core (3) are provided with spring-extended pins (19). The pins (19) slide in the straight groove (32) and the spiral groove (33). The center of the ejector plate (4) is provided with an extension post (24) that extends into the sleeve (26) and is rotatably connected to the end of the root of the clamping core (3).

4. The injection mold for a car handle according to claim 3, characterized in that: The sleeve (26) is provided with multiple guide rods (34) on both sides. The guide rods (34) are slidably connected to a switching slider (27). The switching slider (27) is provided with a groove, which is composed of oblique line segment one (35), straight line segment one (36), oblique line segment two (37) and straight line segment two (38) connected in sequence. The side of the switching slider (27) is provided with a locking slider (40) that can be fitted into the straight line groove (32). Among them, straight line segment one (36) is farther away from the locking slider (40), and straight line segment two (38) is closer to the locking slider (40).

5. The injection mold for a car handle according to claim 4, characterized in that: The extension column (24) has extension rods (28) on both sides. The straight section two (38) is close to the end of the spiral groove (33). The end of the extension rod (28) extends to the switching slider (27) and is provided with a sliding column (29) that slides in the groove of the switching slider (27).

6. The injection mold for a car handle according to claim 3, characterized in that: A fan-shaped groove (42) is provided on one side of the end face of the rotating connection between the extension column (24) and the clamping core (3). The clamping core (3) is provided with a release rod (16) of a spring pin. The clamping core (3) is provided with an inner cavity one (14). The clamping arm (10) is provided with an inner cavity two (15). The two ends of the inner cavity one (14) are connected to the inner cavity two (15). One end of the release rod (16) extends into the inner cavity one (14) and is slidably connected with a connecting rod (17). The other end is pressed against the end face of the extension rod (28).

7. The injection mold for a car handle according to claim 5, characterized in that: The inner cavity 2 (15) is provided with an ejector slider (21) at the end. The root of the spring push rod (12) is connected to the ejector slider (21). The root of the fixing pin (11) extends into the inner cavity 2 (15) and is provided with an inclined unlocking groove (23). The ejector slider (21) is provided with slide rods (22) on both sides that cooperate with the unlocking groove (23). The inner cavity 2 (15) is provided with a lever (18) rotatably connected. One end of the lever (18) is rotatably connected to the ejector slider (21), and the other end is rotatably connected to the connecting rod (17).

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