Oblique core-pulling injection mold for producing automobile lampshade

Abstract

The utility model provides an oblique core-pulling injection mold for producing an automobile lampshade, and belongs to the technical field of injection molds for automobile parts. The oblique core-pulling injection mold for producing the automobile lampshade comprises an upper mounting plate, a middle connecting plate, an upper mold plate, a lower mold plate, a vertical plate and a lower bottom plate, a first driven gear rotating synchronously is fixed to a rotating shaft of a driving gear, a second driven gear rotating synchronously is fixed to a rotating shaft of a driving gear, and a center driving rod is fixed to the middle connecting plate; a moving block is arranged at the lower end of the center driving rod, a vertical rack which is vertically arranged and meshed with the driving gear is arranged on the side face of the moving block, a linkage rod is transversely arranged on the upper die plate in a penetrating mode, a transverse rack meshed with the first driven gear and the second driven gear is arranged on the linkage rod, and a helical rack meshed with the driving gear is arranged on one side of the core rod. The upper end of the core rod is located in the receding groove, and the lower end of the core rod extends into the forming cavity. During core pulling, a gear drives a rack to stably exit from a forming cavity, and the device is suitable for large-inclination-angle core pulling.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile parts injection molds, and relates to an oblique core-pulling injection mold for producing automobile lampshades. Background Art

[0002] Because the car lampshade is a spherical surface, various mounting slots are designed inside the sphere to facilitate the installation of lamps of various sizes and shapes. Existing injection molds typically use a fixed mold with an oblique sliding core pull mechanism. However, if the angle is too large, extracting the core rod becomes difficult. Forced extraction can easily cause the car lampshade to crack or deform, or even jam the core rod. Utility Model Content

[0003] The purpose of the utility model is to address the above-mentioned problems in the existing technology and propose an oblique core-pulling injection mold for producing automobile lampshades, which is more suitable for core pulling at large inclination angles, avoiding the core rod from being stuck when pulled out or forcibly pulling the automobile lampshade product to cause breakage or deformation.

[0004] The purpose of the utility model can be achieved through the following technical solutions: an oblique core-pulling injection mold for producing automobile lampshades, comprising an upper mounting plate, an intermediate connecting plate, an upper template, a lower template, a vertical plate and a lower base plate, characterized in that the lower end of the upper mounting plate is fixed to the intermediate connecting plate, the lower end surface of the intermediate connecting plate is provided with a makeshift groove, a core-pulling cavity is provided in the upper template, and a molding cavity is formed between the upper template and the lower template after the upper template and the lower template are molded together, two vertical plates are fixed between the lower template and the lower base plate, a driving gear and a drive gear are rotatably connected in the core-pulling cavity, a driven gear 1 that rotates synchronously is fixed on the rotating shaft of the driving gear, a driven gear 2 that rotates synchronously is fixed on the rotating shaft of the driving gear, a center The driving rod, the center driving rod is downwardly inserted into the core pulling cavity, the lower end of the center driving rod is provided with a moving block, the side of the moving block is provided with a vertical rack arranged vertically and meshing with the driving gear, and a linkage rod is horizontally passed through the upper template, and the linkage rod has a horizontal rack meshing with the driven gear one and the driven gear two. A limit block with a limit sliding hole is fixed in the core pulling cavity, and the linkage rod is passed through the limit sliding hole and slides horizontally. A lifting rod is also fixed on the middle connecting plate, and the lower end of the lifting rod extends into the core pulling cavity, and the lower end of the lifting rod has a lifting block. A core rod is also obliquely passed through the upper template, and one side of the core rod has a helical rack meshing with the driving gear. The upper end of the core rod is located in the give way groove, and the lower end of the core rod extends into the forming cavity.

[0005] Furthermore, the lifting block and the moving block have the same height, and the upper end surface of the lifting block is flush with the upper end surface of the moving block.

[0006] Furthermore, a transverse spring slot is formed on the outer side of the lower template, a linkage rod extends transversely through the spring slot, a first spring is disposed in the spring slot, a baffle is disposed at the tail end of the linkage rod, the baffle is located in the spring slot, a blocking bolt is threadedly connected to the opening of the spring slot, the outer end of the first spring abuts against the blocking bolt, the inner end of the first spring abuts against the baffle, and under the action of the first spring, the baffle abuts against the bottom of the spring slot. The first spring firmly abuts the baffle against the bottom of the spring slot, and the core rod is kept in place.

[0007] Furthermore, a ejector rod in contact with the molding cavity is passed through the lower template, and a top plate is provided at the lower end of the ejector rod, and the top plate is located between the two vertical plates. A second spring is sleeved on the ejector rod, and the upper end of the second spring rests on the lower end surface of the lower template, and the lower end of the second spring rests on the top plate.

[0008] Furthermore, a ejection hole for the telescopic rod of the ejection cylinder to pass through is opened on the lower base plate, and the ejection hole is located directly below the ejection plate.

[0009] Furthermore, both sides of the motion block are provided with vertical racks, and the driving gear, the drive gear, the linkage rod and the core rod are provided in pairs and are arranged symmetrically with respect to the motion block.

[0010] Furthermore, a guide sleeve is fixed on the upper mounting plate, and a guide column passing through the guide sleeve is fixed on the lower base plate.

[0011] The injection molding machine drives the upper mounting plate to move down, so that the upper and lower templates are molded together, and plastic raw materials are injected into the molding cavity. After the automobile lampshade product is cooled and shaped, the upper mounting plate moves up one end distance. During this process, the lower template does not move, the center drive rod and the lifting rod move up, and the moving block moves up with it. The vertical rack drives the active gear to rotate, and the driven gear 1 drives the linkage rod to move outward, and the linkage rod drives the driven gear 2 to rotate. The driving gear and the driven gear 2 rotate synchronously, and the driving gear drives the core rod to move obliquely upward through the helical rack, so that the core rod is extracted from the automobile lampshade product, the lower end of the core rod is separated from the molding cavity, and the upper end of the core rod moves up in the makeshift groove. When the lifting block and the moving block move upward and abut against the top wall of the core pulling cavity, it will drive the upper template to move up smoothly to realize mold opening. At this time, the ejector cylinder is driven to push the ejector plate and the ejector rod to move up, and the automobile lampshade product on the lower template is ejected. The worker can take it directly. After the material is returned, the ejector rod is restored to its original position by the second spring. Since the core rod is slowly pulled upward by using a gear-driven rack method, it will not cause violent squeezing of the product, and the core rod is driven to move horizontally by the gear, so it will not get stuck.

[0012] Compared with the existing technology, the oblique core-pulling injection mold for producing automobile lampshades has the following advantages:

[0013] 1. The core pulling adopts the gear-driven rack method to smoothly exit the molding cavity, which is suitable for core pulling at large inclination angles.

[0014] 2. As the product is facing upwards, the extraction force required to extract the core rod is small, thus avoiding the phenomenon of product breakage and jamming caused by core extraction through the inclined groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a cross-sectional view of an oblique core-pulling injection mold for producing automobile lampshades.

[0016] Figure 2 It is a structural diagram of the components in the core pulling cavity.

[0017] In the figure, 1. upper mounting plate; 2. middle connecting plate; 3. upper template; 4. lower template; 5. vertical plate; 6. lower base plate; 7. clearance groove; 8. core pulling cavity; 9. driving gear; 10. driving gear; 11. driven gear 1; 12. driven gear 2; 13. center driving rod; 14. moving block; 15. vertical rack; 16. linkage rod; 17. horizontal rack; 18. limiting block; 19. lifting rod; 20. lifting block; 21. core rod; 22. blocking bolt; 23. first spring; 24. baffle; 25. ejecting rod; 26. ejecting plate; 27. second spring; 28. ejecting hole; 29. ​​guide sleeve; 30. guide column. DETAILED DESCRIPTION

[0018] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0019] like Figure 1 As shown, the oblique core-pulling injection mold for producing automobile lampshades includes an upper mounting plate 1, an intermediate connecting plate 2, an upper template 3, a lower template 4, a vertical plate 5 and a lower base plate 6. The lower end of the upper mounting plate 1 is fixed to the intermediate connecting plate 2, and a clearance groove 7 is provided on the lower end surface of the intermediate connecting plate 2. A core-pulling cavity 8 is provided in the upper template 3. After the upper template 3 and the lower template 4 are molded together, a molding cavity is formed between the two. The two vertical plates 5 are fixed between the lower template 4 and the lower base plate 6.

[0020] like Figure 2As shown, the core-pulling cavity 8 is rotatably connected with a driving gear 9 and a driving gear 10, a driven gear 11 that rotates synchronously is fixed on the rotating shaft of the driving gear 9, a driven gear 2 12 that rotates synchronously is fixed on the rotating shaft of the driving gear 10, and a central driving rod 13 is fixed on the intermediate connecting plate 2, the central driving rod 13 is downwardly penetrated into the core-pulling cavity 8, and a moving block 14 is provided at the lower end of the central driving rod 13, and a vertical rack is provided on the side of the moving block 14 that is vertically arranged and meshes with the driving gear 9 15. A linkage rod 16 is horizontally penetrated on the upper template 3, and the linkage rod 16 has a horizontal rack 17 meshing with the driven gear 11 and the driven gear 2 12. A limit block 18 with a limit sliding hole is fixed in the core-pulling cavity 8. The linkage rod 16 is penetrated in the limit sliding hole and slides horizontally. A core rod 21 is also obliquely penetrated on the upper template 3. One side of the core rod 21 has an oblique rack meshing with the driving gear 10. The upper end of the core rod 21 is located in the makeshift groove 7, and the lower end of the core rod 21 extends into the molding cavity.

[0021] A lifting rod 19 is also fixed on the middle connecting plate 2, and the lower end of the lifting rod 19 extends into the core pulling cavity 8. The lower end of the lifting rod 19 has a lifting block 20. The lifting block 20 is at the same height as the moving block 14, and the upper end surface of the lifting block 20 is flush with the upper end surface of the moving block 14.

[0022] A transverse spring slot is formed on the outer side of the lower template 4. The linkage rod 16 extends transversely through the spring slot. A first spring 23 is disposed in the spring slot. A baffle 24 is disposed at the tail end of the linkage rod 16. The baffle 24 is located in the spring slot. A blocking bolt 22 is threadedly connected to the opening of the spring slot. The outer end of the first spring 23 abuts against the blocking bolt 22, while the inner end of the first spring 23 abuts against the baffle 24. Under the action of the first spring 23, the baffle 24 abuts against the bottom of the spring slot. The first spring 23 firmly abuts the baffle 24 against the bottom of the spring slot, and the core rod 21 is kept in place.

[0023] A ejector rod 25 in contact with the molding cavity is passed through the lower template 4, and a top plate 26 is provided at the lower end of the ejector rod 25. The top plate 26 is located between the two vertical plates 5. A second spring 27 is sleeved on the ejector rod 25, and the upper end of the second spring 27 rests on the lower end surface of the lower template 4, and the lower end of the second spring 27 rests on the top plate 26.

[0024] The lower base plate 6 is provided with a jacking hole 28 for the telescopic rod of the jacking cylinder to pass through, and the jacking hole 28 is located just below the top plate 26. A guide sleeve 29 is fixed on the upper mounting plate 1, and a guide column 30 passing through the guide sleeve 29 is fixed on the lower base plate 6.

[0025] There are vertical racks 15 on both sides of the motion block 14 . There are two driving gears 9 , drive gears 10 , linkage rods 16 and core rods 21 , which are symmetrically arranged relative to the motion block 14 .

[0026] Working process: The injection molding machine drives the upper mounting plate 1 to move downward, so that the upper template 3 and the lower template 4 are molded together, and the plastic raw material is injected into the molding cavity. After the automobile lampshade product is cooled and shaped, the upper mounting plate 1 moves up a certain distance. During this process, the lower template 4 does not move, the center driving rod 13 and the lifting rod 19 move up, and the motion block 14 moves up with it. The vertical rack 15 drives the driving gear 9 to rotate, and the driven gear 1 11 drives the linkage rod 16 to move outward. The linkage rod 16 drives the driven gear 2 12 to rotate, and the driving gear 10 rotates synchronously with the driven gear 2 12. 10 drives the core rod 21 to move upward obliquely through the oblique rack, so that the core rod 21 is pulled out of the automotive lampshade product. The lower end of the core rod 21 is separated from the molding cavity, and the upper end of the core rod 21 moves upward in the clearance groove 7. When the pulling block 20 and the moving block 14 move upward to abut against the top wall of the core-pulling cavity 8, it will drive the upper template 3 to move upward smoothly to open the mold. At this time, the ejection cylinder is driven to push the ejector plate 26 and the ejection rod 25 upward to eject the automotive lampshade product located on the lower template 4. The worker can directly take it. After the material is returned, the ejection rod 25 is restored to its original position by the second spring 27. Since the core rod 21 is slowly pulled upward by the gear-driven rack method, it will not cause violent squeezing of the product. Moreover, the gear drives the core rod 21 to move horizontally, so it will not get stuck.

[0027] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. An oblique core-pulling injection mold for producing automobile lampshades, comprising an upper mounting plate, an intermediate connecting plate, an upper mold plate, a lower mold plate, a vertical plate and a lower base plate, characterized in that: The lower end of the upper mounting plate is fixed to the middle connecting plate, and a makeshift groove is provided on the lower end surface of the middle connecting plate. A core-pulling cavity is provided in the upper template. After the upper template and the lower template are molded together, a molding cavity is formed between the two. The two vertical plates are fixed between the lower template and the lower base plate. A driving gear and a drive gear are connected to rotate in the core-pulling cavity. A driven gear 1 that rotates synchronously is fixed on the rotating shaft of the driving gear. A driven gear 2 that rotates synchronously is fixed on the rotating shaft of the drive gear. A central driving rod is fixed on the middle connecting plate. The central driving rod penetrates downward into the core-pulling cavity. The lower end of the central driving rod has a motion block. The motion block The side surface has a vertical rack set vertically and meshed with the driving gear, and a linkage rod is horizontally passed through the upper template, and the linkage rod has a horizontal rack meshed with the driven gear one and the driven gear two. A limit block with a limit sliding hole is fixed in the core pulling cavity, and the linkage rod is passed through the limit sliding hole and slides horizontally. A lifting rod is also fixed on the middle connecting plate, and the lower end of the lifting rod extends into the core pulling cavity, and the lower end of the lifting rod has a lifting block. A core rod is also obliquely passed through the upper template, and one side of the core rod has a helical rack meshed with the driving gear. The upper end of the core rod is located in the give way groove, and the lower end of the core rod extends into the forming cavity.

2. The oblique core-pulling injection mold for producing automobile lampshades according to claim 1, characterized in that: A transverse spring groove is opened on the outer side surface of the lower template, and the linkage rod passes through the spring groove transversely. A first spring is arranged in the spring groove. A baffle is provided at the tail of the linkage rod, and the baffle is located in the spring groove. A blocking bolt is threadedly connected at the opening of the spring groove. The outer end of the first spring rests on the blocking bolt, and the inner end of the first spring rests on the baffle. Under the action of the first spring, the baffle rests on the bottom of the spring groove.

3. The oblique core-pulling injection mold for producing automobile lampshades according to claim 2, characterized in that: The lifting block and the moving block have the same height, and the upper end surface of the lifting block is flush with the upper end surface of the moving block.

4. The oblique core-pulling injection mold for producing automobile lampshades according to claim 3, characterized in that: A ejector rod in contact with the molding cavity is provided in the lower template. The lower end of the ejector rod has a top plate located between the two vertical plates. A second spring is sleeved on the ejector rod. The upper end of the second spring rests on the lower end surface of the lower template, and the lower end of the second spring rests on the top plate.

5. The oblique core-pulling injection mold for producing automobile lampshades according to claim 4, characterized in that: A jacking hole for the telescopic rod of the jacking cylinder to pass through is opened on the lower bottom plate, and the jacking hole is located just below the top plate.

6. The oblique core-pulling injection mold for producing automobile lampshades according to claim 5, characterized in that: Both sides of the motion block are provided with vertical racks, and the driving gear, the driving gear, the linkage rod and the core rod are each provided with two and are arranged symmetrically with respect to the motion block.

7. The oblique core-pulling injection mold for producing automobile lampshades according to claim 6, characterized in that: A guide sleeve is fixed on the upper mounting plate, and a guide column passing through the guide sleeve is fixed on the lower base plate.

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