Rack core-pulling device of injection mold

Abstract

The utility model relates to the technical field of core pulling and demolding, and discloses an injection mold rack core pulling device which comprises a first shell, the front side of the first shell is fixedly connected with a second shell, the interior of the second shell is rotatably connected with a driving shaft, and the exterior of the driving shaft is fixedly connected with a driving gear. A first gear is rotatably connected to the interior of the first shell, a second gear is fixedly connected to the front side of the first gear, double gears are fixedly connected to the exterior of the driving shaft, a driven gear is rotatably connected to the interior of the second shell, a sliding rack is slidably connected to the bottom of the second shell, and sliding grooves are formed in the front side and the rear side of the sliding rack. And the bottom of the sliding rack is fixedly connected with a bottom plate. According to the utility model, the movement of the rack of the injection mold is more stable, and meanwhile, sufficient support is provided for the rack, so that the rack can be ensured not to deviate, and the abrasion degree of the rack can be greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of core pulling and demoulding, in particular to a rack core pulling device for an injection mold. Background Art

[0002] An injection mold is a mold used in the injection molding process. It can inject molten plastic or other thermoplastic materials into the mold cavity, and form the required parts or products after cooling and solidification. Injection molds are usually composed of components such as mold base, mold cavity, injection system, cooling system and exhaust system. Through injection molds, plastic products with complex shapes and precise dimensions can be produced, which are widely used in various fields such as automobiles, electronics, medical devices, and household goods. Rack core pulling is a special structure in injection molds, which is usually used to mold parts with special structures such as grooves or gears. When there are these structures in the mold, the molded parts will be embedded in these structures, making it impossible to remove them directly from the mold. The function of rack core pulling is to move or pull the rack in the mold to make it disengage from the molded part, thereby facilitating the removal of the molded part.

[0003] When the existing injection mold rack core-pulling mold pulls the core of the injection molded part, it usually directly drives the rack to move, thereby realizing the core-pulling process. However, during the core-pulling process, the rack is usually severely worn or even deformed during the meshing process due to the weight of the injection molded part itself. Therefore, in view of the above shortcomings, an injection mold rack core-pulling device is proposed. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art and to propose an injection mold rack core pulling device, which aims to improve the problem in the prior art that some injection molds may have rack deviation or even severe rack wear due to the weight of the injection molded part during the rack core pulling process.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A rack core pulling device for an injection mold comprises a shell 1, a shell 2 is fixedly connected to the front side of the shell 1, a driving shaft is rotatably connected inside the shell 2, a driving gear is fixedly connected to the outside of the driving shaft, a gear 1 is rotatably connected inside the shell 1, a gear 2 is fixedly connected to the front side of the gear 1, a double gear is fixedly connected to the outside of the driving shaft, a driven gear is rotatably connected to the inside of the shell 2, a sliding rack is slidably connected to the bottom of the shell 2, sliding grooves are provided on the front and rear sides of the sliding rack, a bottom of the sliding rack is fixedly connected to a bottom plate, and a limited position reinforcement component is provided on the top of the bottom plate.

[0007] Furthermore, the limiting reinforcement assembly includes multiple fixed frames, the bottoms of multiple fixed frames are fixedly connected to the top of the base plate, the interiors of multiple fixed frames are slidably connected to multiple sliding rods, the exteriors of multiple sliding rods are sleeved with springs, the interiors of multiple fixed frames are slidably connected to two sliding plates, the interiors of multiple sliding plates are movably connected to two rotating balls, and the sides of multiple sliding rods away from the sliding plates are fixedly connected to limiting plates.

[0008] Furthermore, the driving gear is meshedly connected to the gear 1, and the gear 2 is meshedly connected to the double gears.

[0009] Furthermore, the front side of the double gear is meshed with the driven gear, and the driven gear is meshed with the sliding rack.

[0010] Furthermore, the outside of the rotating ball is slidably connected to the inside of the sliding groove, wherein a top portion of the fixing frame is fixedly connected to the bottom of the housing 1.

[0011] Furthermore, one end of the spring is fixedly connected to a side of the sliding plate away from the rotating ball, and the other end of the spring is fixedly connected to a side of the fixed frame close to the rotating ball.

[0012] The utility model has the following beneficial effects:

[0013] In the utility model, by using the bottom plate, fixed frame, sliding rod, spring, sliding plate, rotating ball, limit plate and other structures in coordination, the movement of the rack of the injection mold can be made more stable, and sufficient support can be provided for the rack, thereby ensuring that the rack will not deviate and greatly reducing the degree of wear on the rack. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A three-dimensional diagram of a rack core-pulling device for an injection mold proposed by the utility model;

[0015] Figure 2 This is a schematic diagram of a double gear structure of a rack core pulling device for an injection mold proposed by the utility model;

[0016] Figure 3 This is a schematic diagram of the active gear structure of the rack core pulling device for an injection mold proposed by the utility model;

[0017] Figure 4 The utility model is a schematic diagram of a rotating ball structure of a rack core pulling device for an injection mold.

[0018] Legend:

[0019] 1. Shell 1; 2. Shell 2; 3. Driving shaft; 4. Driving gear; 5. Gear 1; 6. Gear 2; 7. Double gears; 8. Driven gear; 9. Sliding rack; 10. Slide groove; 11. Bottom plate; 12. Fixed frame; 13. Sliding rod; 14. Spring; 15. Sliding plate; 16. Rotating ball; 17. Limit plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Reference Figure 1 - Figure 3 The utility model provides an embodiment: an injection mold rack core pulling device, including a shell 1, the front side of the shell 1 is fixedly connected to the shell 2, the shell 1 and the shell 2 are designed here as the outer layer protection of the core pulling device, the inner part of the shell 2 is rotatably connected to the driving shaft 3, the outer part of the driving shaft 3 is fixedly connected to the driving gear 4, the inner part of the shell 1 is rotatably connected to the gear 1, and the front side of the gear 1 is fixedly connected to the gear 2 6. The design here is that the driving gear 4 can be driven to rotate by the rotation of the driving shaft 3, and then the gear 15 can be rotated. The outer part of the driving shaft 3 is fixedly connected with a double gear 7, and the inner part of the outer shell 2 is rotatably connected with a driven gear 8. The bottom of the outer shell 2 is slidably connected with a sliding rack 9. As the double gear 7 rotates, the driven gear 8 can be driven to rotate, and then the sliding rack 9 can be rotated. The front and rear sides of the sliding rack 9 are provided with a slide groove 10. The slide groove 10 is designed here to serve as a sliding space for the rotating ball 16. The bottom of the sliding rack 9 is fixedly connected with a bottom plate 11, and a limited position reinforcement component is arranged on the top of the bottom plate 11.

[0022] Reference Figure 2 - Figure 4The limiting reinforcement assembly includes a plurality of fixed frames 12, the bottoms of the plurality of fixed frames 12 are fixedly connected to the top of the bottom plate 11, and the fixed frames 12 are designed here to serve as a support for the bottom plate 11, and the interiors of the fixed frames 12 are slidably connected to a plurality of sliding rods 13, and the exteriors of the plurality of sliding rods 13 are sleeved with springs 14, and the design here is that the sliding plate 15 can be displaced with the aid of the elastic force of the springs 14, so that racks of different sizes can be replaced, and the interiors of the plurality of fixed frames 12 are slidably connected to two sliding plates 15, and the interiors of the plurality of sliding plates 15 are movably connected to two rotating balls 16, and the sides of the plurality of sliding rods 13 away from the sliding plate 15 are fixedly connected to a limiting disk 17, and the design here is that the sliding rod 13 can be pulled to displace by the limiting disk 17.

[0023] Reference Figure 2 - Figure 4 The driving gear 4 is meshed with the gear 1 5, the gear 2 6 is meshed with the double gear 7, and the driving gear 4 is designed to drive the gear 1 5 to rotate, and the rotation of the gear 2 6 can drive the double gear 7 to rotate, the front side of the double gear 7 is meshed with the driven gear 8, and the driven gear 8 is meshed with the sliding rack 9, and the driven gear 8 is designed to rotate through the double gear 7, and then the sliding rack 9 can be rotated, and the outer sliding connection of the rotating ball 16 is The interior of the slide groove 10, wherein the top of a portion of the fixed frame 12 is fixedly connected to the bottom of the shell 1, and the fixed frame 12 is designed here to serve as a support for the limiting reinforcement component, one end of the spring 14 is fixedly connected to the side of the sliding plate 15 away from the rotating ball 16, and the other end of the spring 14 is fixedly connected to the side of the fixed frame 12 close to the rotating ball 16. The design here is that the sliding plate 15 can be displaced by compression and rebound of the spring 14, and then racks of different sizes can be replaced according to the spacing between every two sliding plates 15.

[0024] Working principle: When the injection molded part needs to be taken out, the driving shaft 3 is only required to rotate to drive the driving gear 4 to rotate. With the rotation of the driving gear 4, the meshing connection between the driving gear 4 and the gear 1 5 is used to make the gear 1 5 rotate. At this time, with the rotation of the gear 1 5, the gear 2 6 is driven to rotate, and then the meshing connection between the gear 2 6 and the double gear 7 is used to make the double gear 7 rotate. With the rotation of the double gear 7, the meshing connection between the double gear 7 and the driven gear 8 is used to make the driven gear 8 rotate. At this time, the driven gear 8 and the sliding rack can be used to rotate. The meshing connection between 9 causes the sliding rack 9 to be displaced, and at this time, the sliding rack 9 will slide on the top of the bottom plate 11. At this time, as the sliding rack 9 is displaced, the rotating ball 16 will slide inside the slide groove 10. At this time, the sliding rack 9 will be limited to a certain extent by the rotating ball 16, and the sliding rack 9 will be supported to a certain extent by the bottom plate 11. When it is necessary to replace racks of different sizes for core pulling, it is only necessary to pull the limit plate 17 to displace the sliding plate 15, so that the spring 14 can be compressed and rebounded, and then racks of different sizes can be replaced for core pulling.

[0025] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An injection mold rack core pulling device, comprising a housing (1), characterized in that: The front side of the housing 1 (1) is fixedly connected to the housing 2 (2), the interior of the housing 2 (2) is rotatably connected to a driving shaft (3), the exterior of the driving shaft (3) is fixedly connected to a driving gear (4), the interior of the housing 1 (1) is rotatably connected to a gear 1 (5), the front side of the gear 1 (5) is fixedly connected to a gear 2 (6), the exterior of the driving shaft (3) is fixedly connected to a double gear (7), the interior of the housing 2 (2) is rotatably connected to a driven gear (8), the bottom of the housing 2 (2) is slidably connected to a sliding rack (9), the front and rear sides of the sliding rack (9) are both provided with sliding grooves (10), the bottom of the sliding rack (9) is fixedly connected to a bottom plate (11), and a limited position reinforcement component is provided on the top of the bottom plate (11).

2. The injection mold rack core pulling device according to claim 1, characterized in that: The position limiting reinforcement assembly comprises a plurality of fixed frames (12), the bottoms of the plurality of fixed frames (12) are fixedly connected to the top of the bottom plate (11), the interiors of the plurality of fixed frames (12) are slidably connected to a plurality of sliding rods (13), the exteriors of the plurality of sliding rods (13) are sleeved with springs (14), the interiors of the plurality of fixed frames (12) are slidably connected to two sliding plates (15), the interiors of the plurality of sliding plates (15) are movably connected to two rotating balls (16), and the sides of the plurality of sliding rods (13) away from the sliding plates (15) are fixedly connected to a position limiting disk (17).

3. The injection mold rack core pulling device according to claim 1, characterized in that: The driving gear (4) is meshed with the gear one (5), and the gear two (6) is meshed with the double gear (7).

4. The injection mold rack core pulling device according to claim 1, characterized in that: The front side of the double gear (7) is meshed with the driven gear (8), and the driven gear (8) is meshed with the sliding rack (9).

5. The injection mold rack core pulling device according to claim 2, characterized in that: The outside of the rotating ball (16) is slidably connected to the inside of the sliding groove (10), wherein the top of a portion of the fixed frame (12) is fixedly connected to the bottom of the housing 1 (1).

6. The injection mold rack core pulling device according to claim 2, characterized in that: One end of the spring (14) is fixedly connected to a side of the sliding plate (15) away from the rotating ball (16), and the other end of the spring (14) is fixedly connected to a side inside the fixed frame (12) close to the rotating ball (16).

Images