Automobile armrest box injection molding automatic taking structure

Abstract

The present application relates to the technical fields of automobile armrest box injection molding, and discloses an automatic taking structure for automobile armrest box injection molding, which comprises a base and an upright mounting plate, the upright mounting plate is slidably arranged on the base, the base is arranged on the side of an injection molding machine, the upright mounting plate is provided with rotatable extension rods on the top and the bottom, the side of the upright mounting plate is provided with a mounting plate, the end of the extension rod is provided with a slidable cam, and the mounting plate is provided with a plurality of passive gate shearing groups. Compared with the prior art, the automatic shearing passive gate shearing group relies on the product pushing force, does not need a power source, has a compact structure and a small volume, can easily extend into the gap of a deep cavity mold, and can ensure that the flat knife holder first abuts against the gate and then cuts the gate through linkage sliding of the knife holder, so that the cut is flush, a plurality of groups can simultaneously shear a plurality of gates, and the structure is simple and the cost is low.

Description

Technical Field

[0001] This invention relates to the field of automotive armrest box injection molding technology, specifically to an automatic part removal structure for automotive armrest box injection molding. Background Technology

[0002] The armrest box is an important component of the car interior. It is usually produced by injection molding. The molded armrest box has a gate, which needs to be removed by gate shearing before it can meet the usage requirements. Because the armrest box has a certain depth, its injection mold usually has a long core. After the mold opening stroke of a conventional injection molding machine is completed, the core on the moving mold is only a small distance away from the end face of the fixed mold. The injection-molded armrest box remains on the core, located in the narrow gap between the core and the cavity after the mold opens. Conventional automated part removal devices cannot enter this gap to remove the part, let alone complete the gate shearing within the gap.

[0003] In existing technologies, the removal of parts and gate cutting of automotive armrest boxes are usually done manually, or a separate gate cutting process is set up after the product is completely demolded and removed. The above methods have the following drawbacks: manual removal of parts and gate cutting are labor-intensive and have poor operational safety. The cutting quality is affected by human factors, and product consistency is difficult to guarantee. Setting up a separate cutting process involves more steps, longer production cycle, and higher costs. Deep cavity products are also prone to deformation and collisions during demolding and transfer, making it difficult to guarantee the yield. Therefore, how to achieve automated removal of parts and gate cutting of automotive armrest boxes within the narrow gap between the core and cavity after mold opening is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0004] The technical problem to be solved by this invention is that it is difficult to achieve automated part removal and gate shearing of the car armrest box within the narrow gap between the core and the cavity after mold opening. The invention provides an automated part removal structure for injection molding of car armrest boxes.

[0005] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows: an automatic part removal structure for injection molding of an automotive armrest box, including a base and an upright mounting plate. The upright mounting plate is slidably disposed on the base, which is disposed on the side of the injection molding machine. The upright mounting plate is provided with rotatable extension rods at both the top and bottom. An mounting plate is provided on the side of the upright mounting plate. The upright mounting plate slides on the base, allowing the ends of the extension rods and the mounting plate to extend to the space between the core and the cavity after the injection molding machine opens the mold. The ends of the extension rods are provided with slidable cams. The mounting plate is provided with multiple passive gate shearing components. The rotation of the extension rods drives the cams to rotate. The ends of the cams clamp the injection molded product and push it to the passive gate shearing components, which shear the gate of the injection molded product.

[0006] Furthermore, the passive gate shearing assembly includes a fixed slide rail pair, a sliding blade holder, a linkage slider, and a flat blade holder. The fixed slide rail pair is mounted on the mounting plate according to the gate position of the injection molded product. The sliding blade holder is provided with a blade holder slide rail that cooperates with the fixed slide rail pair. The mounting plate is provided with a guide rod according to the gate position of the injection molded product. The linkage slider is slidably connected to the guide rod, and the flat blade holder is slidably connected to the linkage slider.

[0007] Furthermore, the sliding tool holder has inclined sliding grooves on both sides, and the linkage slider has rollers on both sides that cooperate with the sliding grooves. The flat tool holder has inclined sliding grooves on both sides, and the linkage slider has rollers on both sides that cooperate with the sliding grooves.

[0008] Furthermore, the linkage slider is equipped with a light spring for pushing the flat-bladed knife holder, and the mounting plate is equipped with a heavy spring for pushing the linkage slider.

[0009] Furthermore, the sliding tool holder is provided with a gate cutting blade, and the flat tool holder is provided with a gate flat blade.

[0010] Furthermore, the end of the extension rod is provided with a flat part, the cam is provided with a cam groove that matches the flat part, the extension rod is provided with a limiting pin groove, a limiting pin is provided in the limiting pin groove, and the cam is provided with a limiting pin groove that matches the limiting pin.

[0011] Furthermore, the cam end is provided with a silicone bushing.

[0012] Furthermore, the base is provided with a guide rail and a lead screw, the bottom of the upright mounting plate is provided with a guide rail pair that matches the guide rail and a lead screw pair that matches the lead screw, and a motor for driving the lead screw is provided on the outside of the base.

[0013] Furthermore, each of the upright mounting plates is equipped with a second motor, a pulley, a drive shaft, and a reducer. The output shaft of the reducer is poweredly connected to the extension rod, the drive shaft is poweredly connected to the input shaft of the reducer, and the pulley powersly connects the output shaft of the second motor to the drive shaft.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] The passive gate shearing assembly automatically shears using the product's pushing force, requiring no power source. It has a compact structure and small size, and can easily extend into the gaps of deep mold cavities to achieve fully automatic part removal, clamping, shearing, and discharge, which is safe and efficient.

[0016] The cam pushes the spring based on the product's own contour to achieve adaptive elastic clamping without damaging the product surface. The silicone bushing increases friction and works with the injection molding machine's demolding mechanism to peel the product from the long core, ensuring smooth part removal.

[0017] The difference in elasticity between light and heavy springs ensures that the flat-blade cutter first presses against the gate, and then the sliding cutter cuts in conjunction with it, resulting in a clean cut. Multiple components can simultaneously cut multiple gates, making the structure simple and cost-effective. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the present invention in use.

[0020] Figure 3 This is a schematic diagram of the structure of the base of the present invention.

[0021] Figure 4 This is a schematic diagram of the extension rod of the present invention.

[0022] Figure 5 This is a schematic diagram of the passive gate shearing assembly of the present invention.

[0023] Figure 6 yes Figure 5 An enlarged schematic diagram of point a in the middle.

[0024] Figure 7 This is a schematic diagram of the passive gate shearing assembly of the present invention.

[0025] Figure 8 yes Figure 7 Enlarged schematic diagram of point b in the middle.

[0026] Figure 9 This is a schematic diagram of the linkage of the flat-blade tool holder of the present invention.

[0027] Figure 10 This is a schematic diagram of the linkage of the sliding tool holder of the present invention.

[0028] Figure 11 This is a schematic diagram of the operation of the cam in this invention.

[0029] Figure 12 yes Figure 11 Enlarged diagram of point c in the middle.

[0030] Figure 13 This is a schematic diagram of the cam pushing operation of the present invention.

[0031] Figure 14 This is a schematic diagram of the working contact between the flat-edged knife holder and the armrest box of the present invention.

[0032] Figure 15 This is a schematic diagram of the operation of the flat-edged knife holder of the present invention being pushed by the handrail box.

[0033] Figure 16 This is a schematic diagram of the sliding blade holder cutting the gate according to the present invention.

[0034] Figure 17 This is a schematic diagram of the material discharge of the present invention.

[0035] As shown in the figure: 1. Base, 2. Upright mounting plate, 3. Extension rod, 4. Mounting plate, 5. Cam, 6. Guide rail, 7. Lead screw, 8. Lead screw pair, 9. Guide rail pair, 10. Motor 1, 11. Motor 2, 12. Pulley, 13. Drive shaft, 14. Reducer, 15. Silicone bushing, 16. Cam slide groove, 17. Limiting groove, 18. Flat part, 19. Limiting pin groove, 20. Limiting pin, 21. Fixed slide rail pair, 22. Sliding knife holder, 23. Knife holder slide rail, 24. Gate cutting blade, 25. Slide groove 1, 26. Guide rod, 27. Linkage slider, 28. Flat knife holder, 29. Gate flat blade, 30. Contact roller, 31. Slide groove 2, 32. Roller 1, 33. Roller 2, 34. Light spring, 35. Heavy spring, 36. Passive gate shearing assembly. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings.

[0037] Combined with appendix Figure 1 and attached Figure 2 An automatic part removal structure for injection molding of an automotive armrest box includes a base 1 and an upright mounting plate 2. The upright mounting plate 2 is slidably mounted on the base 1, which is located on the side of an injection molding machine. The upright mounting plate 2 has rotatable extension rods 3 on both the top and bottom, and mounting plates 4 on the side. The upright mounting plate 2 slides on the base 1, allowing the ends of the extension rods 3 and mounting plates 4 to extend to the space between the core and cavity after the injection molding machine opens the mold. The ends of the extension rods 3 are provided with slidable cams 5, and the mounting plates 4 are provided with multiple passive gate shearing components 36. The rotation of the extension rods 3 drives the cams 5 to rotate, and the ends of the cams 5 clamp the injection molded product and push it to the passive gate shearing components 36, which shear the gate of the injection molded product.

[0038] Because car armrest boxes have a certain depth, the molds used for injection molding car armrest boxes usually have a long core. After the mold opening stroke of a conventional injection molding machine is completed, the core on the moving mold is only a small distance away from the end face of the fixed mold. The injection-molded car armrest box remains on the core. Conventional automated part removal devices cannot enter the gap after mold opening to remove the part and cut the gate. In the above structure, after the extension rod 3 enters the mold gap, it is located on the upper and lower sides of the core. After the mounting plate 4 enters the mold gap, it is located in the gap between the core and the cavity. By rotating the cam 5, the end face of the cam clamps the car armrest box. With the existing demolding mechanism of the injection molding machine, the car armrest box is peeled off from the core and pushed towards the cavity, so that the end face of the car armrest box contacts the passive gate shearing component 36 on the mounting plate 4 and the gate is cut off.

[0039] Combined with appendix Figure 3 The base 1 is provided with a guide rail 6 and a lead screw 7. The bottom of the upright mounting plate 2 is provided with a guide rail pair 9 that matches the guide rail 6 and a lead screw pair 8 that matches the lead screw 7. The outer side of the base 1 is provided with a motor 10 that drives the lead screw 7. After injection molding, the upright mounting plate 2 is driven by the motor 10 to move on the guide rail 6, and the extension rod 3 and the mounting plate 4 are sent into the gap between the mold cavity and the core.

[0040] Combined with appendix Figure 4 The extension rod 3 has a flat part 18 at its end, the cam 5 has a cam groove 16 that matches the flat part 18, the extension rod 3 has a limiting pin groove 19, the limiting pin groove 19 has a limiting pin 20, the cam 5 has a limiting groove 17 that matches the limiting pin 20, the end of the cam 5 has a silicone bushing 15, and a spring is also provided between the extension rod 3 and the cam 5 to push the cam 5 outward.

[0041] The extension rod 3 causes the silicone bushing 15 at the end of the cam 5 to contact the upper and lower surfaces of the armrest box. As it rotates continuously, the armrest box pushes the cam 5 against its own contour, compressing the spring and achieving elastic clamping. At the same time, it works with the existing demolding mechanism of the injection molding machine to remove the armrest box from the core. The silicone bushing 15 can increase the friction between the cam 5 and the upper and lower surfaces of the armrest box.

[0042] Combined with appendix Figure 3 Each of the upright mounting plates 2 is equipped with a second motor 11, a pulley 12, a transmission shaft 13, and a reducer 14. The output shaft of the reducer 14 is poweredly connected to the extension rod 3, and the transmission shaft 13 is poweredly connected to the input shaft of the reducer 14. The pulley 12 powersly connects the output shaft of the second motor 11 to the transmission shaft 13, and the second motor 11 simultaneously drives the two extension rods 3 to rotate in opposite directions.

[0043] Combined with appendix Figure 5 Appendix Figure 6 Appendix Figure 7 and attached Figure 8 The passive gate shearing assembly 36 includes a fixed slide rail pair 21, a sliding blade holder 22, a linkage slider 27, and a flat blade holder 28. The fixed slide rail pair 21 is installed on the mounting plate 4 according to the gate position of the injection molded product. The sliding blade holder 22 is provided with a blade holder slide rail 23 that cooperates with the fixed slide rail pair 21. The mounting plate 4 is provided with a guide rod 26 according to the gate position of the injection molded product. The linkage slider 27 is slidably connected to the guide rod 26. The flat blade holder 28 is slidably connected to the linkage slider 27. The sliding blade holder 22 is provided with a gate cutting blade 24. The flat blade holder 28 is provided with a gate flat blade 29. Contact rollers 30 are provided on both sides of the flat blade holder 28.

[0044] Combined with appendix Figure 6The sliding tool holder 22 has inclined grooves 25 on both sides, and the linkage slider 27 has rollers 32 on both sides that match the grooves 25. The flat tool holder 28 has inclined grooves 31 on both sides, and the linkage slider 27 has rollers 33 on both sides that match the grooves 31. The linkage slider 27 is equipped with a light spring 34 to push the flat tool holder 28, and the mounting plate 4 is equipped with a heavy spring 35 to push the linkage slider 27.

[0045] The linkage process of the sliding tool holder 22, the linkage slider 27, and the flat tool holder 28 is shown in the attached document. Figure 8 Appendix Figure 9 and attached Figure 10 By continuously pushing the flat-blade holder 28, the gate cutting blade 24 and the gate flat blade 29 can be brought closer and closer. By placing the gate cutting blade 24 and the gate flat blade 29 on both sides of the gate, the injection molded part with the gate can be brought closer and pushed by the flat-blade holder 28 to achieve the removal of the gate.

[0046] Combined with appendix Figure 11 Appendix Figure 12 Appendix Figure 13 Appendix Figure 14 Appendix Figure 15 and attached Figure 16 As the cam 5 continuously pushes the armrest box towards the mounting plate 4, the end face of the armrest box contacts the contact roller 30 and pushes the flat-blade holder 28. Since the elasticity of the light spring 34 is lower than that of the heavy spring 35, the linkage slider 27 and the sliding holder 22 remain stationary. The flat-blade holder 28 first slides along the second slide groove 31 and finally makes the end of the gate flat blade 29 press against the gate on the armrest box. Due to the obstruction of the gate, the flat-blade holder 28 cannot continue to slide. In this state, the flat-blade holder 28 drives the linkage slider 27 to compress the heavy spring 35 and move. Through the roller 32 and the slide groove 25, the sliding holder 22 moves towards the flat-blade holder 28, causing the gate cutting blade 24 to cut the gate.

[0047] Combined with appendix Figure 17 After cutting, keep the rotation angle of cam 5 unchanged, continue to clamp the armrest box, control motor 10 to move the upright mounting plate 2 and the armrest box out of the mold gap, and complete the product discharge.

[0048] 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 automatic part removal structure for injection molding of an automotive armrest box, comprising a base (1) and an upright mounting plate (2), wherein the upright mounting plate (2) is slidably disposed on the base (1), and the base (1) is disposed on the side of an injection molding machine, characterized in that: The upright mounting plate (2) is provided with rotatable extension rods (3) on both the top and bottom. The upright mounting plate (2) is provided with mounting plate (4) on the side. The upright mounting plate (2) slides on the base (1) so that the ends of the extension rod (3) and the mounting plate (4) extend to the space between the core and cavity after the injection molding machine opens the mold. The end of the extension rod (3) is provided with a slidable cam (5). The mounting plate (4) is provided with multiple passive gate shearing components (36). The extension rod (3) rotates to drive the cam (5) to rotate. The end of the cam (5) clamps the injection molded product and pushes it to the passive gate shearing component (36). The passive gate shearing component (36) shears the gate of the injection molded product.

2. The automatic part removal structure for injection molding of an automotive armrest box according to claim 1, characterized in that: The passive gate shearing assembly (36) includes a fixed slide rail pair (21), a sliding blade holder (22), a linkage slider (27), and a flat blade holder (28). The fixed slide rail pair (21) is installed on the mounting plate (4) according to the gate position of the injection molded product. The sliding blade holder (22) is provided with a blade holder slide rail (23) that cooperates with the fixed slide rail pair (21). The mounting plate (4) is provided with a guide rod (26) according to the gate position of the injection molded product. The linkage slider (27) is slidably connected to the guide rod (26), and the flat blade holder (28) is slidably connected to the linkage slider (27).

3. The automatic part removal structure for injection molding of an automotive armrest box according to claim 2, characterized in that: The sliding tool holder (22) has inclined grooves (25) on both sides, and the linkage slider (27) has rollers (32) that match the grooves (25) on both sides. The flat tool holder (28) has inclined grooves (31) on both sides, and the linkage slider (27) has rollers (33) that match the grooves (31) on both sides.

4. The automatic part removal structure for injection molding of an automotive armrest box according to claim 2, characterized in that: The linkage slider (27) is provided with a light spring (34) for pushing the flat blade holder (28), and the mounting plate (4) is provided with a heavy spring (35) for pushing the linkage slider (27).

5. The automatic part removal structure for injection molding of an automotive armrest box according to claim 2, characterized in that: The sliding tool holder (22) is provided with a gate cutting blade (24), and the flat tool holder (28) is provided with a gate flat blade (29).

6. The automatic part removal structure for injection molding of an automotive armrest box according to claim 1, characterized in that: The extension rod (3) has a flat part (18) at its end, and the cam (5) has a cam groove (16) that matches the flat part (18). The extension rod (3) has a limiting pin groove (19), and the limiting pin groove (19) has a limiting pin (20). The cam (5) has a limiting groove (17) that matches the limiting pin (20).

7. The automatic part removal structure for injection molding of an automotive armrest box according to claim 1, characterized in that: The end of the cam (5) is provided with a silicone bushing (15).

8. The automatic part removal structure for injection molding of an automotive armrest box according to claim 1, characterized in that: The base (1) is provided with a guide rail (6) and a lead screw (7). The bottom of the upright mounting plate (2) is provided with a guide rail pair (9) that cooperates with the guide rail (6) and a lead screw pair (8) that cooperates with the lead screw (7). The outer side of the base (1) is provided with a motor (10) that drives the lead screw (7).

9. The automatic part removal structure for injection molding of an automotive armrest box according to claim 1, characterized in that: Each of the upright mounting plates (2) is equipped with a second motor (11), a pulley (12), a transmission shaft (13), and a reducer (14). The output shaft of the reducer (14) is poweredly connected to the extension rod (3), the transmission shaft (13) is poweredly connected to the input shaft of the reducer (14), and the pulley (12) powersly connects the output shaft of the second motor (11) to the transmission shaft (13).

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