Automatic mold changing device of injection molding machine

Abstract

The utility model discloses an automatic mold changing device of an injection molding machine, which belongs to the technical field of injection molding machines and comprises a base, and the top of the base is fixedly connected with a top frame; when the mold needs to be replaced, the AGV drives the clamping arm to move towards the lower mold or the upper mold, when the clamping arm abuts against the inclined face of the second toothed bar, the second toothed bar overcomes the elastic force of the spring to retract into the second toothed bar groove, meanwhile, the first toothed bar is driven by the gear to move out of the inserting groove, the clamping arm clamps the mold and drives the T-shaped block to move out of the T-shaped groove, and the mold is replaced. After the mold is loosened, the spring drives the first toothed bar to reset and to be inserted into the inserting groove, the T-shaped block is prevented from moving in the T-shaped groove, and then the mold can be installed. And the replacement efficiency of the mold is greatly improved, and the labor intensity of workers is relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, in particular to an automatic mold changing device for an injection molding machine. Background Art

[0002] An injection mold is a tool used to produce plastic products. It is also a tool that gives plastic products a complete structure and precise dimensions. Injection molding is a processing method used in the mass production of certain parts with complex shapes. Specifically, it refers to the process of injecting heated and molten plastic into the mold cavity under high pressure by an injection molding machine. After cooling and solidification, the molded product is obtained.

[0003] The injection mold is fixedly installed on the injection molding machine. When the mold needs to be replaced, since the mold is fixedly connected to the injection molding machine by bolts, it is necessary to manually disassemble and assemble the mold. Its installation method cannot automatically complete the mold change. Therefore, we propose an automatic mold changing device for injection molding machine to solve the problem raised. Utility Model Content

[0004] The purpose of the utility model is to provide an automatic mold changing device for an injection molding machine, which achieves the purpose of automatically completing the disassembly and installation of the mold through the installation structure of the mold by auxiliary equipment, greatly improving the efficiency of mold replacement and reducing the labor intensity of the staff.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: an automatic mold changing device for an injection molding machine, comprising a base, a top frame fixedly connected to the top of the base, and hydraulic rods symmetrically installed on both sides of the top frame, wherein:

[0006] A lifting seat is fixedly installed at the bottom end of the hydraulic rod, a lower mold is installed on the top of the base corresponding to the lifting seat, and an upper mold is installed on the bottom of the lifting seat. The lower mold and the upper mold are both installed with the base and the lifting seat through the mounting seat. A T-shaped groove is provided on the side of the base and the lifting seat close to the mounting seat, and a T-shaped block is fixedly connected to the side of the mounting seat corresponding to the T-shaped groove. The four sides of the mounting seat are symmetrically provided with first rack grooves, and a slot is provided on the side of the base and the lifting seat corresponding to the first rack groove, and a first rack is provided in the first rack groove;

[0007] A second gear rod groove is provided on the other side of the mounting seat close to the first gear rod groove, a spring is installed in the second gear rod groove, a second gear rod is installed on the open side of the spring close to the second gear rod groove, a gear is connected to the internal rotation between the mounting seat close to the first gear rod and the second gear rod, an AGV car is provided on the outside of the base, a vertical bracket is fixedly installed on the top of the AGV car, a horizontal bracket is vertically slidably connected to the vertical bracket, a clamping arm is symmetrically provided on the side of the horizontal bracket away from the vertical bracket, and the clamping arm is controlled by an electric mechanism to lift, clamp or release.

[0008] Preferably, the first gear rod and the second gear rod are both engaged with the gear, and the same side of the second gear rod located on the outer side of the mounting seat is an inclined surface.

[0009] Preferably, the inner walls of the mounting seat close to the first gear rod groove and the second gear rod groove are connected to the limiting grooves, and the first gear rod and the second gear rod are fixedly connected to the limiting blocks on one side corresponding to the limiting grooves.

[0010] Preferably, the electric mechanism includes a first slide groove, the vertical bracket is provided with a first slide groove on one side close to the horizontal bracket, the horizontal bracket is fixedly connected to the first slide groove on one side close to the first slide groove, and the first screw rod is rotatably connected to the first slide groove, the top of the vertical bracket is installed with a first motor, the shaft end of the first motor is fixedly connected to the first screw rod, the horizontal bracket is provided with a second slide groove on one side close to the clamping arm, the clamping arm is fixedly connected to the second slide groove on one side, and the second screw rod is rotatably connected to the second slide groove on the second slide groove, and the second motor is installed at one end of the horizontal bracket, and the shaft end of the second motor is fixedly connected to the second screw rod.

[0011] Preferably, the first sliding groove is arranged parallel to the long side of the vertical bracket, and the second sliding groove is arranged parallel to the long side of the horizontal bracket.

[0012] Preferably, the second screw rod is provided with two sections of external threads, and the directions of the threads of the two sections of external threads of the second screw rod are opposite.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] When the upper mold is in place, the AGV drives the first gear bar to be reset and inserted into the slot, thereby preventing the T-shaped block from moving in the T-slot, and thus completing the installation of the mold. Through the installation structure of the mold, the auxiliary equipment can automatically complete the disassembly and installation of the mold, which greatly improves the efficiency of mold replacement and reduces the labor intensity of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a side view of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model from a top view;

[0017] Figure 3 This is a schematic diagram of the front view structure of the utility model;

[0018] Figure 4 For this utility model Figure 1 Schematic diagram of the locally enlarged structure at point A in the middle.

[0019] In the figure: 1. Base; 2. Top frame; 3. Hydraulic rod; 4. Lifting seat; 5. Lower mold; 6. Upper mold; 7. Mounting seat; 8. T-slot; 9. T-block; 10. First gear rod slot; 11. Slot; 12. First gear rod; 13. Second gear rod slot; 14. Spring; 15. Second gear rod; 16. Gear; 17. Limiting slot; 18. Limiting block; 19. AGV vehicle; 20. Vertical bracket; 21. Horizontal bracket; 22. Clamping arm; 23. First slide; 24. First slider; 25. First screw rod; 26. First motor; 27. Second slide; 28. Second slider; 29. ​​Second screw rod; 30. Second motor. DETAILED DESCRIPTION

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

[0021] Example:

[0022] See also Figures 1 to 4 The utility model provides a technical solution: an automatic mold changing device for an injection molding machine, comprising a base 1, a top frame 2 fixedly connected to the top of the base 1, and hydraulic rods 3 symmetrically installed on both sides of the top frame 2, wherein,

[0023] A lifting seat 4 is fixedly installed at the bottom end of the hydraulic rod 3, a lower mold 5 is installed on the top of the base 1 corresponding to the lifting seat 4, and an upper mold 6 is installed on the bottom of the lifting seat 4. The lower mold 5 and the upper mold 6 are installed with the base 1 and the lifting seat 4 through the mounting seat 7. A T-shaped slot 8 is opened on the side of the base 1 and the lifting seat 4 close to the mounting seat 7, and a T-shaped block 9 is fixedly connected to the side of the mounting seat 7 corresponding to the T-shaped slot 8. The four sides of the mounting seat 7 are symmetrically opened with a first rack groove 10, and a slot 11 is opened on the side of the base 1 and the lifting seat 4 corresponding to the first rack groove 10. A first rack 12 is arranged in the first rack groove 10;

[0024] A second gear bar groove 13 is provided on the other side of the mounting seat 7 near the first gear bar groove 10, and a spring 14 is installed in the second gear bar groove 13. A second gear bar 15 is installed on the open side of the spring 14 near the second gear bar groove 13. A gear 16 is connected to the internal rotation between the mounting seat 7 near the first gear bar 12 and the second gear bar 15. An AGV car 19 is provided on the outside of the base 1. A vertical bracket 20 is fixedly installed on the top of the AGV car 19. A horizontal bracket 21 is vertically slidably connected to the vertical bracket 20. A clamping arm 22 is symmetrically provided on the side of the horizontal bracket 21 away from the vertical bracket 20. The clamping arm 22 is controlled by an electric mechanism to lift, clamp or release;

[0025] When the lower mold 5 and the upper mold 6 need to be replaced, the AGV car 19 (AGV is also known as an automatic guided transport vehicle, which can travel along a specified guide path, existing technology, directly quoted) travels to the injection molding machine according to the specified route, so that the AGV car 19 drives the clamping arm 22 to move toward the lower mold 5 or the upper mold 6. When the clamping arm 22 is against the inclined surface of the second gear bar 15, the second gear bar 15 overcomes the elastic force of the spring 14 and retracts into the second gear bar groove 13. At the same time, the gear 16 drives the first gear bar 12 to move out of the slot 11, and the lower mold 5 or the upper mold 6 can be clamped by the clamping arm 22, so that the lower mold 5 or the upper mold 6 can be replaced. The mold 5 or the upper mold 6 drives the T-block 9 to move out of the T-slot 8, and then drives the lower mold 5 or the upper mold 6 to be installed to be inserted into the T-slot 8 through the T-block 9. After the installation position is in place, the lower mold 5 or the upper mold 6 is released, and after the clamping arm 22 withdraws, the spring 14 loses resistance, driving the first gear rod 12 to reset and insert into the slot 11, preventing the T-block 9 from moving in the T-slot 8, and completing the installation of the mold. Through the installation structure of the mold, the auxiliary equipment can automatically complete the disassembly and installation of the mold, which greatly improves the efficiency of mold replacement and reduces the labor intensity of the staff.

[0026] See also Figures 1 to 4 The first gear rod 12 and the second gear rod 15 are both meshed with the gear 16, and the same side of the second gear rod 15 located on the outside of the mounting seat 7 is an inclined surface. The inner walls of the mounting seat 7 close to the first gear rod groove 10 and the second gear rod groove 13 are connected to the limiting groove 17, and the first gear rod 12 and the second gear rod 15 are fixedly connected to the limiting block 18 on one side corresponding to the limiting groove 17. When the first gear rod 12 and the second gear rod 15 move in the first gear rod groove 10 and the second gear rod groove 13, the first gear rod 12 and the second gear rod 15 simultaneously drive the limiting block 18 to move in the limiting groove 17. The limit block 18 and the limiting groove 17 can limit the stroke of the first gear rod 12 and the second gear rod 15 to prevent the first gear rod 12 and the second gear rod 15 from moving out of the first gear rod groove 10 and the second gear rod groove 13.

[0027] See also Figures 1 to 4The electric mechanism includes a first slide groove 23, a first slide groove 23 is opened on the side of the vertical bracket 20 close to the horizontal bracket 21, a first slider 24 is fixedly connected to the side of the horizontal bracket 21 close to the first slide groove 23, a first screw rod 25 threadedly connected to the first slider 24 is rotatably connected in the first slide groove 23, a first motor 26 is installed on the top of the vertical bracket 20, and the shaft end of the first motor 26 is fixedly connected to the first screw rod 25, a second slide groove 27 is opened on the side of the horizontal bracket 21 close to the clamping arm 22, a second slider 28 is fixedly connected to the side of the clamping arm 22 close to the second slide groove 27, a second screw rod 29 threadedly connected to the second slider 28 is rotatably connected in the second slide groove 27, a second motor 30 is installed at one end of the horizontal bracket 21, and the shaft end of the second motor 30 is fixedly connected to the second screw rod 29. It is arranged parallel to the long side of the horizontal bracket 20, and the second slide groove 27 is arranged parallel to the long side of the horizontal bracket 21. The second screw rod 29 is provided with two sections of external threads, and the texture directions of the two sections of the external threads of the second screw rod 29 are opposite. When the first motor 26 is working, it drives the first screw rod 25 to rotate, and the first screw rod 25 drives it to move up and down through the threaded connection formed with the first slider 24, and then drives the clamping arm 22 to move up and down through the horizontal bracket 21. When the second motor 30 is working, it drives the second screw rod 29 to rotate. The second screw rod 29 can drive the second sliders 28 on both sides to move closer to or away from each other, and then drive the clamping arms 22 to move closer to or away from each other. Through this electric mechanism, the lifting, clamping or releasing state of the clamping arm 22 can be controlled to clamp or release molds of different heights, thereby facilitating the replacement of molds of different heights.

[0028] Working principle: This is an automatic mold changing device for an injection molding machine. When the lower mold 5 and the upper mold 6 need to be replaced, the AGV car 19 (AGV is also known as an automatic guided transport vehicle, which can travel along a specified guide path. It is a prior art and is directly quoted) travels to the injection molding machine along the specified route, so that the AGV car 19 drives the clamping arm 22 to move toward the lower mold 5 or the upper mold 6. When the clamping arm 22 is against the inclined surface of the second gear bar 15, the second gear bar 15 overcomes the elastic force of the spring 14 and retracts into the second gear bar groove 13. At the same time, the gear 16 drives the first gear bar 12 to move out of the slot 11, and the lower mold 5 can be clamped by the clamping arm 22. The mold 5 or the upper mold 6 drives the T-shaped block 9 to move out of the T-shaped slot 8, and then drives the lower mold 5 or the upper mold 6 to be installed to be inserted into the T-shaped slot 8 through the T-shaped block 9. After the installation position is in place, the lower mold 5 or the upper mold 6 is released, and after the clamping arm 22 is withdrawn, the spring 14 loses resistance, drives the first gear rod 12 to reset and insert into the slot 11, and prevents the T-shaped block 9 from moving in the T-shaped slot 8, and the installation of the mold is completed. Through the installation structure of the mold, the auxiliary equipment can automatically complete the disassembly and installation of the mold, which greatly improves the efficiency of mold replacement and reduces the labor intensity of the staff;

[0029] When the first gear rod 12 and the second gear rod 15 move in the first gear rod groove 10 and the second gear rod groove 13, the first gear rod 12 and the second gear rod 15 simultaneously drive the limit block 18 to move in the limit groove 17. The limit block 18 and the limit groove 17 can limit the stroke of the first gear rod 12 and the second gear rod 15 to prevent the first gear rod 12 and the second gear rod 15 from moving out of the first gear rod groove 10 and the second gear rod groove 13. When the first motor 26 works, it drives the first screw rod 25 to rotate. The first screw rod 25 rotates with the first motor 26. The threaded connection formed by the first slider 24 drives it to rise and fall, and then drives the clamping arm 22 to rise and fall through the transverse bracket 21. When the second motor 30 is working, it drives the second screw rod 29 to rotate. The second screw rod 29 can drive the second sliders 28 on both sides to move closer to or away from each other, and then drive the clamping arms 22 to move closer to or away from each other. Through this electric mechanism, the lifting, clamping or releasing state of the clamping arm 22 can be controlled to clamp or release molds of different heights, thereby facilitating the replacement of molds of different heights.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic mold changing device for an injection molding machine, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a top frame (2), and hydraulic rods (3) are symmetrically installed on both sides of the top frame (2), wherein: The bottom end of the hydraulic rod (3) is fixedly mounted with a lifting seat (4), the top of the base (1) corresponding to the lifting seat (4) is mounted with a lower die (5), the bottom of the lifting seat (4) is mounted with an upper die (6), the lower die (5) and the upper die (6) are mounted with the base (1) and the lifting seat (4) through a mounting seat (7), a T-shaped slot (8) is provided on the side of the base (1) and the lifting seat (4) close to the mounting seat (7), a T-shaped block (9) is fixedly connected to the side of the mounting seat (7) corresponding to the T-shaped slot (8), the four sides of the mounting seat (7) are symmetrically provided with a first gear rod slot (10), the side of the base (1) and the lifting seat (4) corresponding to the first gear rod slot (10) is provided with a slot (11), and a first gear rod (12) is provided in the first gear rod slot (10); The mounting seat (7) is provided with a second gear bar groove (13) on the other side close to the first gear bar groove (10), a spring (14) is installed in the second gear bar groove (13), and a second gear bar (15) is installed on the opening side of the spring (14) close to the second gear bar groove (13). The mounting seat (7) is connected to the internal rotation between the first gear bar (12) and the second gear bar (15). An AGV car (19) is provided on the outside of the base (1), and a vertical bracket (20) is fixedly installed on the top of the AGV car (19). A horizontal bracket (21) is vertically slidably connected to the vertical bracket (20), and a clamping arm (22) is symmetrically provided on the side of the horizontal bracket (21) away from the vertical bracket (20). The clamping arm (22) is controlled by an electric mechanism to be raised, lowered, clamped or released.

2. The automatic mold changing device for injection molding machine according to claim 1, characterized in that: The first gear rod (12) and the second gear rod (15) are both engaged with the gear (16), and the same side of the second gear rod (15) located outside the mounting seat (7) is an inclined surface.

3. The automatic mold changing device for injection molding machine according to claim 1, characterized in that: The inner walls of the mounting seat (7) close to the first gear rod groove (10) and the second gear rod groove (13) are both connected to the limiting groove (17), and the first gear rod (12) and the second gear rod (15) are both fixedly connected to the limiting block (18) on one side corresponding to the limiting groove (17).

4. The automatic mold changing device for an injection molding machine according to claim 1, characterized in that: The electric mechanism includes a first slide groove (23), a first slide groove (23) is provided on the side of the vertical bracket (20) close to the horizontal bracket (21), a first slider (24) is fixedly connected to the side of the horizontal bracket (21) close to the first slide groove (23), a first screw rod (25) threadedly connected to the first slider (24) is rotatably connected in the first slide groove (23), a first motor (26) is installed on the top of the vertical bracket (20), and the shaft end of the first motor (26) is connected to the first screw rod (25). The rod (25) is fixedly connected, a second sliding groove (27) is provided on the side of the transverse bracket (21) close to the clamping arm (22), a second slider (28) is fixedly connected on the side of the clamping arm (22) close to the second sliding groove (27), a second screw rod (29) threadedly connected to the second slider (28) is rotatably connected in the second sliding groove (27), a second motor (30) is installed at one end of the transverse bracket (21), and the shaft end of the second motor (30) is fixedly connected to the second screw rod (29).

5. The automatic mold changing device for injection molding machine according to claim 4, characterized in that: The first sliding groove (23) is arranged in parallel with the long side of the vertical bracket (20), and the second sliding groove (27) is arranged in parallel with the long side of the horizontal bracket (21).

6. The automatic mold changing device for an injection molding machine according to claim 4, characterized in that: The second screw rod (29) is provided with two sections of external threads, and the directions of the threads of the two sections of external threads of the second screw rod (29) are opposite.

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