Automatic die changing device and control system for cold stamping die

Abstract

The utility model relates to the technical field of hydraulic press die changing, in particular to an automatic die changing device system for a cold stamping die. Comprising a traction system, an induction system and a clamping system, the traction system is used for drawing a mold, the induction system is used for inducing the mold, and the clamping system is used for clamping the mold; the two linear guide rails are longitudinally arranged on the upper plane of the lower base, lower base supporting frames are arranged on the two sides of the lower plane of the lower base, the traction device is arranged on one side of the lower base, and the traction device is connected with the linear guide rails; a guide mechanism for guiding a die and a clamping mechanism for clamping the die are symmetrically arranged on the outer side of the linear guide rail, a clamping groove matched with the clamping mechanism is transversely formed in the upper plane of the lower base, positioning pins are symmetrically arranged at the end, close to the motor, of the upper plane of the lower base, and positioning pin sensors are arranged on the positioning pins.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic press die changing, in particular to an automatic die changing device for cold stamping dies and a control system. Background Art

[0002] Existing mold changing methods are generally manual or semi-automatic, which is inefficient and difficult to control the mold positioning accuracy after mold change.

[0003] To this end, the utility model proposes an automatic die changing device and control system for cold stamping dies, which can achieve automatic die changing and improve die positioning accuracy. Utility Model Content

[0004] The purpose of the utility model is to solve the problems existing in the prior art and to propose an automatic die changing device and a control system for a cold stamping die.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A cold stamping die automatic die changing device comprises a lower seat, two linear guide rails longitudinally arranged on the upper plane of the lower seat, a traction device, a guiding device and a clamping device; lower seat support frames are arranged on both sides of the lower plane of the lower seat, a traction device is arranged on one side of the lower seat, the traction device is connected to the linear guide rails, and a guide mechanism for guiding the mold and a clamping mechanism for clamping the mold are symmetrically arranged on the outer sides of the linear guide rails; a clamping groove adapted to the clamping mechanism is horizontally arranged on the upper plane of the lower seat, and the cross-section of the clamping groove is a convex structure; positioning pins are symmetrically arranged on the upper plane of the lower seat near one end of the motor, and a positioning pin sensor is arranged on the positioning pin for sensing the mold.

[0007] Furthermore, the traction device includes a reduction motor, a driving gear, a driven gear set, a die lifter, a cylinder assembly and a latch. The reduction motor is fixedly mounted on the side wall of the lower seat through a bracket, the output end of the reduction motor is sleeved with a driving gear, and a driven gear set is correspondingly arranged below the driving gear. The cylinder assembly is slidably arranged on the two linear guide rails through a slider, and the die lifter is symmetrically arranged on the outside of the two linear guide rails.

[0008] Furthermore, the driven gear group includes a first driven gear, a second driven gear and a third driven gear, the first driven gear and the driving gear are symmetrically arranged on both sides of the upper plane, the second driven gear and the first driven gear are symmetrically arranged on one side of the lower seat, and the third driven gear and the driving gear are symmetrically arranged on the other side of the lower seat, and the driving gear, the first driven gear, the second driven gear and the third driven gear are connected by a gear chain.

[0009] Furthermore, the cylinder assembly includes a chain clamp, a connecting plate, a cylinder mounting seat and a cylinder. The cross-section of the chain clamp is T-shaped. The lower plane of the connecting plate is fixedly connected to the chain clamp and the slider. The chain clamp is arranged between the two sliders. The upper plane of the connecting plate is fixedly provided with a cylinder mounting seat. The cylinder is fixedly provided on the cylinder mounting seat. The cylinder piston end is connected to a pin, and a traction ear sensor is provided on the pin. The cylinder assembly moves through a gear chain, and the gear chain passes through the chain clamp.

[0010] Furthermore, the die lifter includes a roller, and the roller is driven to rise or fall by an oil circuit inside the die lifter.

[0011] Furthermore, the clamping mechanism includes a second cylinder, a pushing block and a clamping mold body. The piston end of the second cylinder is connected to the pushing block. The pushing block is L-shaped. The bottom cross-section of the pushing block is a convex structure II. The short side of the connecting block is connected to the clamping mold body.

[0012] Furthermore, the clamp body includes a clamp base and a clamp, the bottom cross-section of the clamp base is a convex structure three, one end of the clamp base is fixedly connected to the short side end of the push block, and the clamp is fixedly connected to the clamp base.

[0013] Furthermore, the second and third convex structure are adapted to the bottom of the clamping groove, and the bottom of the push block and the clamp base are slidably disposed in the clamping groove.

[0014] A control system includes the above-mentioned automatic mold changing device for cold stamping molds, including a traction system, a sensing system and a clamping system, the traction system is used to pull the mold, the sensing system is used to sense the mold, and the clamping system is used to clamp the mold.

[0015] Compared with the existing technology, the automatic die changing device and control system for cold stamping dies provided by the present invention have the following advantages:

[0016] 1. Low cost, no need for manual labor, using electric and pneumatic two-pronged approach to reduce manpower and time costs,

[0017] 2. Smooth operation and high positioning accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional schematic diagram of an automatic die changing device for cold stamping dies in the present utility model;

[0019] Figure 2 This is a top view schematic diagram of an automatic die changing device for cold stamping dies in the present utility model;

[0020] Figure 3 This is a side view schematic diagram of an automatic die changing device for cold stamping dies in the present utility model;

[0021] Figure 4 for Figure 3 AA surface cross-sectional view in FIG;

[0022] Figure 5 for Figure 3 A magnified schematic diagram of part I in FIG;

[0023] Figure 6 This is a three-dimensional schematic diagram of the clamping mold body of the utility model;

[0024] Figure 7 This is the system framework diagram of the utility model;

[0025] In the figure: 1. lower seat, 2. linear guide, 3. die lifter, 4. clamping groove, 5. reduction motor, 6. driving gear, 71. first driven gear, 72. second driven gear, 73. third driven gear, 8. chain clamp, 9. connecting plate, 10. cylinder mounting seat, 11. cylinder, 12. latch, 13. guide block, 14. guide wheel, 15. second cylinder, 16. push block, 17. die clamp base, 18. die clamp, 19. positioning pin. DETAILED DESCRIPTION

[0026] 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.

[0027] In the description of this utility model, it is necessary to understand that the terms "upper", "lower", "front",

[0028] The directions or positional relationships indicated by “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, it cannot be understood as a limitation on the present invention. At the same time, the terms “first”, “second”, etc. are only used to distinguish the names of the various components, and there is no primary or secondary relationship. Therefore, it cannot be understood as a limitation on the present invention.

[0029] In embodiment 1, a traction device is provided on one side of the lower seat 1, and the traction device is connected to the linear guide rail 2. A guide mechanism for guiding the mold and a clamping mechanism for clamping the mold are symmetrically provided on the outer sides of the linear guide rail 2. A clamping groove 4 adapted to the clamping mechanism is horizontally provided on the upper plane of the lower seat 1, and the cross-section of the clamping groove 4 is a convex structure. A positioning pin 19 is symmetrically provided on the upper plane of the lower seat 1 near one end of the motor, and a positioning pin sensor is provided on the positioning pin 19 for sensing the mold.

[0030] Through the setting of this technical solution, the traction device can pull the mold to move, the guide device can guide the mold, and the clamping mechanism provides clamping force for the mold, thereby achieving the effect of automatically changing the mold and clamping the mold.

[0031] Example 2, the traction device includes a reduction motor 5, a driving gear 6, a driven gear group, a die lifter 3, a cylinder assembly and a pin 12. The reduction motor 5 is fixedly mounted on the side wall of the lower seat 1 through a bracket, and the output end of the reduction motor 5 is sleeved with a driving gear 6. A driven gear group is correspondingly arranged below the driving gear 6. The cylinder assembly is slidably arranged on the two linear guide rails 2 through a slider, and the die lifter 3 is symmetrically arranged on the outside of the two linear guide rails 2.

[0032] In this embodiment, the linear guide rail 2 on the side close to the reduction motor 5 extends out of the plane of the lower seat 1, so that the cylinder assembly can completely withdraw from the plane of the lower seat 1 when retracting. The cylinder assembly can slide back and forth on the linear guide rail driven by the slider.

[0033] The driven gear set includes a first driven gear 71, a second driven gear 72 and a third driven gear 73. The first driven gear 71 and the driving gear 6 are symmetrically arranged on both sides of the upper plane, the second driven gear 72 and the first driven gear 71 are symmetrically arranged on one side of the lower seat, and the third driven gear 73 and the driving gear 6 are symmetrically arranged on the other side of the lower seat 1. The driving gear 6, the first driven gear 71, the second driven gear 72 and the third driven gear 73 are connected by a gear chain.

[0034] In this embodiment, the driving gear 6, the first driven gear 71, the second driven gear 72 and the third driven gear 73 are connected by a gear chain. When the reduction motor 5 rotates, it can drive the driving gear 6 to rotate, and the rotation of the driving gear 6 can drive the first driven gear 71, the second driven gear 72 and the third driven gear 73 to rotate.

[0035] The driving gear 6 and the first driven gear 71 are protected by protective covers on their outer sides.

[0036] The cylinder assembly includes a chain clip 8, a connecting plate 9, a cylinder mounting seat 10 and a cylinder 11. The chain clip 8 has a T-shaped cross-section. The connecting plate 9 is fixedly provided on the upper plane of the chain clip 8. The connecting plate 9 is fixedly provided on the upper plane of the slider. The chain clip 8 is arranged between the two sliders. The cylinder mounting seat 10 is fixedly provided on the upper plane of the connecting plate 9. The cylinder 11 is fixedly provided on the cylinder mounting seat 10. The piston end of the cylinder 11 is connected to a pin 12, and a traction lug sensor is provided on the pin 12. The cylinder assembly moves through a gear chain that passes through the chain clip 8. When the traction lug sensor senses the traction lug of the mold, the pin 12 on the movable end of the cylinder will be inserted into the traction lug of the mold, and the cylinder assembly will pull the mold to move.

[0037] In this embodiment, the chain clamp 8 has a T-shaped cross-section and is arranged between the two sliders. The upper plane of the chain clamp 8 is flush with the upper plane of the slider. The upper plane of the chain clamp 8 and the upper plane of the slider are provided with a connecting plate 9. The gear chain passes through the lower part of the chain clamp 8. When the chain rotates around the gear, it can drive the chain clamp 8 to rotate, which can drive the cylinder assembly to slide on the linear guide 2. Of course, the sliding displacement of the cylinder assembly is determined by the length of the linear guide 2. Limiting devices can also be provided at both ends of the linear guide 2 to prevent the cylinder assembly from moving excessively.

[0038] The die lifter 3 includes a roller, and the roller is driven to rise or fall by the oil circuit inside the die lifter 3.

[0039] In this embodiment, the mold lifter 3 is installed in a groove opened on the lower plane. When not in use, the roller of the mold lifter 3 is lower than the upper plane of the lower seat. When the oil circuit inside the mold lifter 3 is supplied with oil, the roller rises to above the upper plane of the lower seat 1, facilitating the movement of the mold on the upper plane of the lower seat 1.

[0040] The guide mechanism includes a guide block 13 and a guide wheel 14 . The guide block 13 and the guide wheel 14 are arranged at intervals and are parallel to the two linear guide rails 2 .

[0041] In this embodiment, guide blocks 13 and guide wheels 14 are arranged in a row in the longitudinal direction. Guide blocks 13 are arranged on the side away from the reduction motor 5, that is, the starting position of the mold movement to the lower seat 1. The deep hook ball bearings set in the guide wheels 14 are fixed to the surface of the lower seat 1, and the guide wheels 14 roll on the outside of the deep hook ball bearings. The guide blocks 13 and guide wheels 14 are arranged in a row and symmetrically on the outside of the two linear guide rails 2. The distance between the two guide devices is greater than the width of the mold.

[0042] The clamping mechanism includes a second cylinder 15, a pushing block 16 and a clamping mold body. The piston end of the second cylinder 15 is connected to the pushing block 16. The pushing block 16 is L-shaped. The bottom cross-section of the pushing block 16 is a convex structure 2. The short side of the connecting block is connected to the clamping mold body.

[0043] The clamp body includes a clamp base 17 and a clamp 18. The bottom cross-section of the clamp base 17 is a convex structure three. One end of the clamp base 17 is fixedly connected to the short side end of the push block 16, and the clamp 18 is fixedly connected to the clamp base 17.

[0044] The second and third convex structure are adapted to the bottom of the clamping groove 4 , and the bottom of the pushing block 16 and the clamp base 17 are slidably disposed inside the clamping groove 4 .

[0045] Specifically, there are four clamping mechanisms, which are symmetrically arranged on the outside of the die lifter 3. The clamping mechanism is arranged between the guide wheel 14 and the guide wheel 14. Cylinder 2 15 sleeps above the clamping groove 4. The piston end of cylinder 2 15 is fixedly connected to the long side of the pushing block 16. The bottom of the pushing block 16 is adapted to the bottom of the clamping groove 4. The cross-section is a convex structure. The bottom of the pushing block 16 is slightly smaller than the bottom of the clamping groove 4. The bottom of the pushing block 16 can slide at the bottom of the clamping groove 4. The short side of the pushing block 16 is connected to the clamp base 17. The clamp base 17 is adapted to the bottom of the clamping groove 4. The clamp base 17 is slightly smaller than the bottom of the clamping groove 4 and can slide in the clamping groove 4. The clamp 18 is connected to the clamp base 17. In this embodiment, the clamp 18 is a circular body, and the front end of the clamping groove 4 is also set to a circular shape adapted to the clamp 18. When the piston end of cylinder 2 15 moves forward, it will push the clamping mechanism to move along the direction of the clamping groove 4.

[0046] A positioning pin 19 is symmetrically provided on the upper plane of the lower seat 1 near one end of the motor. The positioning pin 19 is provided with a sensing device for sensing the mold.

[0047] The positioning pin 19 is set on the outside of the mold lifter 3. When the mold moves to the position of the positioning pin 19, the sensing device set on the positioning pin senses the mold and transmits a signal to the traction device. The reduction motor 5 stops rotating and the mold also stops moving.

[0048] In this embodiment, a drag chain is also provided next to the linear guide rail 2, which is fixedly connected together through a bracket and a cylinder mounting seat, and is used to protect the air pipe and the wires, and allows the wires to move back and forth with the cylinder.

[0049] Example 3, a control system, including a traction system, a sensing system and a clamping system, wherein the traction system is used to issue instructions to traction the mold, the sensing system is used to sense the mold, and the clamping system issues instructions to clamp the mold.

[0050] The traction system, sensing system and clamping system are all connected through signal transmission. The traction system controls the rotation of the motor, and the sensing system is used to sense the mold. Specifically, after the traction ear sensor senses the traction ear, it transmits a signal to the traction system, and the cylinder pushes the pin 12 to insert into the traction ear. The traction system controls the motor to reverse. When the positioning pin sensor senses the mold, it transmits a signal to the clamping system, and the clamping system directs cylinder 2 to push the clamp 18 to clamp the mold.

[0051] Working principle: first move the mold-carrying trolley carrying the mold to the side of the lower seat to align it with the mold, start the device system, the reduction motor 5 starts to rotate, driving the gear set to rotate, the gear set drives the gear chain to rotate, and the gear chain drives the traction device to move along the linear guide 2. When the traction ear sensor senses the traction ear, the motor stops rotating and transmits a signal to the traction system. The traction system sends a command to the cylinder 11 to insert the cylinder pin 12 into the traction ear, and then feeds back the signal to the traction system. The traction system gives a signal, and the mold lifter 3 rises to above the upper plane of the lower seat. The motor reverses and drives the mold to move on the mold lifter 3 to the specified position. After the positioning pin sensor senses that the mold is in place, the sensing system transmits a signal to the motor in the traction system to stop the motor. The mold stops moving and the signal is transmitted to the traction system. The mold lifter 3 in the traction device drops below the upper plane of the lower seat, and the mold also drops to the lower plane of the lower seat. At this time, the clamping system receives the signal, and the cylinder 2 in the clamping device pushes the clamp 18 to clamp the mold. At this time, the mold change is completed and the press can start mold trial.

[0052] The mold traction system, mold sensing system and mold clamping system are all integrated into the same controller as the hydraulic press control system. Each system works together and is connected to each other through signals.

[0053] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic die changing device for cold stamping dies, comprising a lower seat (1), two linear guide rails (2) arranged longitudinally on the upper plane of the lower seat (1), a traction device, a guide device and a clamping device, characterized in that: A traction device is provided on one side of the lower seat (1), and the traction device is connected to the linear guide rail (2). A guide mechanism for guiding the mold and a clamping mechanism for clamping the mold are symmetrically provided on the outer side of the linear guide rail (2). A clamping groove (4) adapted to the clamping mechanism is transversely provided on the upper plane of the lower seat (1), and the cross section of the clamping groove (4) is a convex structure. A positioning pin (19) is symmetrically provided on the upper plane of the lower seat (1) near one end of the motor, and a positioning pin sensor is provided on the positioning pin (19) for sensing the mold.

2. The automatic die changing device for cold stamping dies according to claim 1, characterized in that: The traction device includes a reduction motor (5), a driving gear (6), a driven gear group, a die lifter (3), a cylinder assembly and a latch (12). The reduction motor (5) is fixedly mounted on the side wall of the lower seat (1) through a bracket. The output end of the reduction motor (5) is sleeved with a driving gear (6). A driven gear group is correspondingly arranged below the driving gear (6). The cylinder assembly is slidably arranged on the two linear guide rails (2) through a slider. The die lifter (3) is symmetrically arranged on the outside of the two linear guide rails (2).

3. The automatic die changing device for cold stamping dies according to claim 2, characterized in that: The driven gear set comprises a first driven gear (71), a second driven gear (72) and a third driven gear (73), wherein the first driven gear (71) and the driving gear (6) are symmetrically arranged on both sides of the upper plane, the second driven gear (72) and the first driven gear (71) are symmetrically arranged on one side of the lower seat (1), and the third driven gear (73) and the driving gear (6) are symmetrically arranged on the other side of the lower seat (1), and the driving gear (6), the first driven gear (71), the second driven gear (72) and the third driven gear (73) are connected by a gear chain.

4. The automatic die changing device for cold stamping dies according to claim 2, characterized in that: The cylinder assembly comprises a chain clamp (8), a connecting plate (9), a cylinder mounting seat (10) and a cylinder (11), wherein the cross section of the chain clamp (8) is T-shaped, the lower plane of the connecting plate (9) is fixedly connected to the chain clamp (8) and the slider, the chain clamp (8) is arranged between the two sliders, the upper plane of the connecting plate (9) is fixedly provided with a cylinder mounting seat (10), the cylinder (11) is fixedly provided on the cylinder mounting seat (10), the piston end of the cylinder (11) is connected to a pin (12), the pin (12) is provided with a traction lug sensor, and the cylinder assembly moves through a gear chain, and the gear chain passes through the chain clamp (8).

5. The automatic die changing device for cold stamping dies according to claim 2, characterized in that: The die lifter (3) comprises a roller, and the roller is driven to rise or fall by an oil circuit inside the die lifter (3).

6. The automatic die changing device for cold stamping dies according to claim 1, characterized in that: The guide mechanism comprises a plurality of guide blocks (13) and guide wheels (14). The guide blocks (13) and guide wheels (14) are arranged at intervals and are parallel to the two linear guide rails (2).

7. The automatic die changing device for cold stamping dies according to claim 1, characterized in that: The clamping mechanism comprises a second cylinder (15), a pushing block (16) and a clamping mold body. The piston end of the second cylinder (15) is connected to the pushing block (16). The pushing block (16) is L-shaped. The bottom cross-section of the pushing block (16) is a convex structure II. The short side of the connecting block is connected to the clamping mold body.

8. The automatic die changing device for cold stamping dies according to claim 7, characterized in that: The clamping body includes a clamping base (17) and a clamping device (18). The bottom cross-section of the clamping base (17) is in the shape of a convex structure three. One end of the clamping base (17) is fixedly connected to the short side end of the push block (16). The clamping device (18) is fixedly connected to the clamping base (17).

9. The automatic die changing device for cold stamping dies according to claim 8, characterized in that: The convex structure 2 and the convex structure 3 are adapted to the bottom of the clamping groove (4), and the bottom of the pushing block (16) and the clamping base (17) are slidably arranged in the clamping groove (4).

10. A control system comprising an automatic die changing device for cold stamping dies according to any one of claims 1 to 9, characterized in that: It includes a traction system, an induction system and a clamping system. The traction system is used to pull the mold, the induction system is used to sense the mold, and the clamping system is used to clamp the mold. The induction system and the traction system are connected through electrical signals, and the induction system and the clamping system are connected through electrical signals.

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