Composite die with side punching and side chamfering double-acting structure

Abstract

The utility model discloses a side punching and side chamfering composite die with a double-acting structure, which comprises an upper die unit, an upper driving block and a lower die unit, the upper driving block is mounted on the upper die unit, the upper die unit is used for driving the upper driving block to reciprocate up and down, and in an initial state, the upper driving block is positioned above the lower die unit. The upper die unit is driven by the machine tool table board to move in the Z-axis direction, the upper die unit drives the upper driving block to reciprocate and simultaneously drives the workpiece to move downwards, and in the descending process of the upper driving block, the upper driving block firstly makes contact with the chamfering female die of the lower die unit, pushes the chamfering female die to be tightly attached to the surface of the workpiece, is limited to the second limiting block and continues to move downwards. And the upper driving block is in contact with the chamfering convex block to drive the chamfering convex block to move in the opposite direction, meanwhile, the chamfering punch performs chamfering or side punching on the workpiece, and after the chamfering or side punching action is completed, the machine tool drives the upper die unit to move upwards and the lower die unit to reset, so that double actions are completed.

Description

Technical Field

[0001] The utility model relates to the technical field of die structures, and particularly to a compound die with a double-action structure for side punching and side chamfering. Background Art

[0002] In current automotive parts, many products require a stamping direction and also require chamfering of the blanking burr surface. For some products with very strict hole position tolerances, it is necessary to perform forming first and then punching. And it is very cumbersome to chamfer holes on irregular surfaces, usually requiring cooperation with a single-punch die to complete. Therefore, a structure that can complete chamfering of irregular surfaces needs to be designed, and this structure needs to meet the requirements of low cost, small occupied space, and easy adjustment. Summary of the Utility Model

[0003] In order to solve the deficiencies of the above technical solutions, the purpose of the utility model is to provide a compound die with a double-action structure for side punching and side chamfering.

[0004] The purpose of the utility model is realized through the following technical solutions.

[0005] A compound die with a double-action structure for side punching and side chamfering, comprising an upper die unit, an upper driving block, and a lower die unit.

[0006] The upper driving block is installed on the upper die unit, and the upper die unit is used to drive the upper driving block to reciprocate up and down. In the initial state, the upper driving block is located above the lower die unit.

[0007] The lower die unit includes a lower backing plate, sliding rails, a chamfer punch fixing seat, a chamfer die, a chamfer convex block, and a chamfer punching mechanism. One sliding rail is horizontally installed on each longitudinal side of the lower backing plate. Two chamfer punch fixing seats are arranged on the lower backing plate, and the chamfer punch fixing seats are slidably installed between the two sliding rails. The chamfer convex block is fixedly installed on the horizontal outer side of each chamfer punch fixing seat, and the chamfer punching mechanism is fixedly installed on the horizontal inner side of each chamfer punch fixing seat. The chamfer die is slidably installed between the two sliding rails and is located between the chamfer punching mechanism and the chamfer convex block. A driving block action station is formed between the chamfer convex block and the chamfer die.

[0008] In the above technical solution, the chamfer punching mechanism includes a chamfer punch mounting convex block and a chamfer punch. The chamfer punch mounting convex block is installed on the chamfer punch fixing seat, and a plurality of chamfer punches arranged at intervals in sequence are provided on the outer side surface of the chamfer punch mounting convex block.

[0009] In the above technical solution, a first limit block is arranged between the two chamfering punch mounting bumps. The first limit block is mounted on the lower backing plate. A second limit block is mounted on the chamfering punch fixing seat. The second limit block is located between the chamfering female die and the chamfering punch mounting bump. A third limit block is mounted on the chamfering punch fixing seat. The third limit block is located between the chamfering female die and the chamfering bump.

[0010] In the above technical solution, a spring fixing seat is arranged at each of the two transverse ends of the lower backing plate. The sliding track is located between the two spring fixing seats. Two fixed-distance screws are transversely mounted on the chamfering female die. The fixed-distance screws sequentially penetrate through the chamfering bump and the spring fixing seat. A first spring is mounted on the fixed-distance screw outside the spring fixing seat. The first spring provides an outward acting force to the chamfering female die, so that the chamfering female die is limited at the third limit block in the initial state.

[0011] In the above technical solution, a second spring is arranged between the chamfering bump and the spring fixing seat. The second spring provides an inward acting force to the chamfering bump, so that the chamfering punch mounting bump is limited at the first limit block in the initial state.

[0012] In the above technical solution, the opposite surface of the chamfering bump and the chamfering female die is a first inclined surface. The opposite surface of the chamfering female die and the chamfering bump is a second inclined surface. The length of the first inclined surface is greater than that of the second inclined surface. The slope of the first inclined surface is greater than that of the second inclined surface. The opposite surface of the upper driving block and the chamfering bump is a third inclined surface. The third inclined surface matches the length and slope of the first inclined surface. The opposite surface of the upper driving block and the chamfering female die is a fourth inclined surface. The fourth inclined surface matches the length and slope of the second inclined surface. The lower bottom edges of the third inclined surface and the fourth inclined surface are located on the same horizontal plane, so that when the upper driving block moves downward, it first contacts the chamfering female die (the fourth inclined surface contacts the second inclined surface) and pushes the chamfering female die to slide transversely along the sliding track until it contacts the outer surface of the workpiece on the two chamfering punch mounting bumps and is limited by the second limit block.

[0013] In the above technical solution, the lower backing plate is mounted on the lower die base. The spring fixing seat is mounted on the lower die base.

[0014] In the above technical solution, a punch fixing plate is fixedly mounted on each of the opposite side surfaces of the two chamfering punch mounting bumps through pin screws. Three chamfering punches are longitudinally arranged and mounted on the punch fixing plate in sequence. A polyurethane ring is sleeved on each chamfering punch.

[0015] In the above technical solution, a spring fixing plate is fixedly mounted on the outer side surface of the spring fixing seat. The second spring penetrates through the spring fixing seat and is mounted on the spring fixing plate.

[0016] In the above technical solution, two pressing plates are installed at intervals on the sliding track, and the chamfering punch mounting bumps of the two chamfering punches are located between the two pressing plates.

[0017] The advantages and beneficial effects of the present utility model are as follows:

[0018] The present utility model uses the machine tool table to drive the upper die unit to move in the Z-axis direction (vertical direction). The upper die unit drives the upper driving block to reciprocate, and at the same time drives the workpiece to move downward. During the downward movement of the upper driving block, the upper driving block first contacts the chamfering female die of the lower die unit, pushes the chamfering female die to closely adhere to the surface of the workpiece, and is limited at the second limiting block. Continuing to move downward, the upper driving block then contacts the chamfering convex block, drives the chamfering convex block to move in the opposite direction. At the same time, the chamfering punch chamfers or side punches the workpiece. After the chamfering or side punching action is completed, the machine tool drives the upper die unit to move upward, and the lower die unit resets to complete the double action.

[0019] The present utility model realizes mechanical transmission, achieves the purpose of side chamfering, is simple and convenient, has low cost, occupies a small space, can save the single-punch die and labor costs, thereby improving production efficiency and having strong practicability. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of the lower die unit, the upper driving block and the workpiece in the state where the die is opened.

[0021] Figure 2 It is a schematic structural diagram of the lower die unit, the upper driving block and the workpiece during the movement of the die.

[0022] Figure 3 It is a schematic structural diagram of the lower die unit, the upper driving block and the workpiece after the die is closed.

[0023] Figure 4 It is a schematic structural diagram of the workpiece in Embodiment 1.

[0024] Figure 5 It is a partial enlarged view of Embodiment 1.

[0025] Among them, 1: lower die unit, 1.1: lower die base, 1.2: lower backing plate, 1.3: sliding track, 1.4: spring fixing seat, 1.5: chamfering punch fixing seat, 1.6: chamfering female die, 1.7: chamfering convex block, 1.8: chamfering punch mounting bump, 1.9: chamfering punch, 1.10: first limiting block, 1.11: second limiting block, 1.12: third limiting block, 1.13: first inclined surface, 1.14: second inclined surface, 1.15: third inclined surface, 1.16: fourth inclined surface, 1.17: fixed-distance screw, 1.18: first spring, 1.19: second spring, 1.20: spring fixing plate, 1.21: pressing plate, 1.22: polyurethane ring, 1.23: punch fixing plate, 2: upper driving block, 3: workpiece. Detailed implementation manners

[0026] The technical solution of the present utility model will be further described below in conjunction with specific embodiments.

[0027] Embodiment 1

[0028] As Figures 1 - 5 shown, a compound die with a double-acting structure for side punching and side chamfering includes an upper die unit, an upper driving block 2 and a lower die unit 1. The upper driving block 2 is installed on the upper die unit, and the upper die unit is used to drive the upper driving block 2 to reciprocate up and down. In the initial state, the upper driving block 2 is located above the lower die unit 1.

[0029] The lower die unit 1 includes a lower die base 1.1, a lower backing plate 1.2, sliding tracks 1.3, a spring fixing seat 1.4, a chamfering punch fixing seat 1.5, a chamfering concave die 1.6, a chamfering convex block 1.7 and a chamfering punching mechanism. The lower backing plate 1.2 is installed on the lower die base 1.1. One sliding track 1.3 is horizontally installed on each of the longitudinal two sides of the lower backing plate 1.2. Two chamfering punch fixing seats 1.5 are arranged on the lower backing plate 1.2. The two chamfering punch fixing seats 1.5 are symmetrically arranged along the longitudinal center line of the lower backing plate 1.2 and are slidably installed between the two sliding tracks 1.3. The chamfering convex block 1.7 is fixedly installed on the horizontal outer side of each chamfering punch fixing seat 1.5, and the chamfering punching mechanism is fixedly installed on the horizontal inner side of each chamfering punch fixing seat 1.5. The chamfering concave die 1.6 is longitudinally slidably installed between the two sliding tracks 1.3. The chamfering concave die 1.6 is located between the chamfering convex block 1.7 and the chamfering punching mechanism. A driving block action station is formed between the chamfering convex block 1.7 and the chamfering concave die 1.6. In the initial state when the die is opened, the upper driving block 2 is located above the driving block action station. Spring fixing seats 1.4 are installed on the lower die base 1.1 at both horizontal ends of the lower backing plate 1.2. The sliding tracks 1.3 are located between the two spring fixing seats 1.4, and two pressing plates 1.21 are installed at intervals on the sliding tracks 1.3.

[0030] The chamfering punching mechanism includes a chamfering punch mounting convex block 1.8 and a chamfering punch 1.9. The chamfering punch mounting convex block 1.8 is installed on the chamfering punch fixing seat 1.5. On the opposite side faces of the two chamfering punch mounting convex blocks 1.8, a punch fixing plate 1.23 is fixedly installed respectively through pin screws. Three chamfering punches 1.9 are longitudinally arranged in sequence on the punch fixing plate 1.23. A polyurethane ring 1.22 is sleeved on each chamfering punch 1.9 to form a workpiece processing station.

[0031] A first limiting block 1.10 is arranged between the two chamfering punch mounting bumps 1.8. The first limiting block 1.10 is mounted on the lower backing plate 1.2, and the first limiting block 1.10 is used to limit the position of the chamfering punch mounting bump 1.8 in the initial state; a second limiting block 1.11 is mounted on the chamfering punch fixing seat 1.5. The second limiting block 1.11 is located between the chamfering female die 1.6 and the chamfering punch mounting bump 1.8, and the second limiting block 1.11 is used to limit the position of the chamfering female die 1.6 during the working process of the die; a third limiting block 1.12 is mounted on the chamfering punch fixing seat 1.5. The third limiting block 1.12 is located between the chamfering female die 1.6 and the chamfering bump 1.7, and the third limiting block 1.12 is used to limit the position of the chamfering female die 1.6 in the initial state.

[0032] Two spacing screws 1.17 are horizontally and parallelly mounted on the chamfering female die 1.6. The spacing screws 1.17 sequentially penetrate through the chamfering bump 1.7 and the spring fixing seat 1.4. A first spring 1.18 is mounted on the spacing screw 1.17 outside the spring fixing seat 1.4 to provide an outward acting force to the chamfering female die 1.6 and limit the chamfering female die 1.6 at the third limiting block 1.12. The upper driving block 2 is located between the two spacing screws 1.17. A second spring 1.19 is arranged between the chamfering bump 1.7 and the spring fixing seat 1.4. A spring fixing plate 1.20 is fixedly mounted on the outer side surface of the spring fixing seat 1.4. The second spring 1.19 penetrates through the spring fixing seat 1.4 and is mounted on the spring fixing plate 1.20. The second spring 1.19 provides an inward acting force to the chamfering bump 1.7 to limit the chamfering punch mounting bump 1.8 at the first limiting block 1.10.

[0033] The opposite surface of the chamfering convex block 1.7 and the chamfering concave die 1.6 is the first inclined surface 1.13, and the opposite surface of the chamfering concave die 1.6 and the chamfering convex block 1.7 is the second inclined surface 1.14. The length of the first inclined surface 1.13 is greater than that of the second inclined surface 1.14, and the slope of the first inclined surface 1.13 is greater than that of the second inclined surface 1.14. The opposite surface of the upper driving block 2 and the chamfering convex block 1.7 is the third inclined surface 1.15, and the third inclined surface 1.15 matches the first inclined surface 1.13 in terms of length and slope. The opposite surface of the upper driving block 2 and the chamfering concave die 1.6 is the fourth inclined surface 1.16, and the fourth inclined surface 1.16 matches the second inclined surface 1.14 in terms of length and slope. The lower bottom edges of the third inclined surface 1.15 and the fourth inclined surface 1.16 are located on the same horizontal plane, so that during the downward movement of the upper driving block 2, it first contacts the chamfering concave die 1.6 (the fourth inclined surface 1.16 contacts the second inclined surface 1.14), pushing the chamfering concave die 1.6 to slide horizontally inward along the sliding track 1.3 until it contacts the outer surface of the workpiece 3 located on the two chamfering punch mounting bumps 1.8. At the same time, the chamfering concave die 1.6 is limited by the second limiting block 1.11.

[0034] The working process of chamfering the workpiece 3 by the compound die with the double-acting structure of side punching and side chamfering in this embodiment includes the following steps:

[0035] Place the compound die on the machine tool. When the compound die is in the initial open state, the upper driving block 2 is located above the driving block action station. The chamfering convex block 1.7 is subjected to an inward acting force of the second spring 1.19. The chamfering convex block 1.7 presses the chamfering punching mechanism against the first limiting block 1.10 through the chamfering punch fixing seat 1.5. The chamfering concave die 1.6 is subjected to an outward acting force of the first spring 1.18 and is limited on the third limiting block 1.12, so as to reserve enough space between the chamfering punch mounting bump 1.8 and the chamfering concave die 1.6 for the workpiece 3 to enter.

[0036] The machine tool drives the upper die unit 1 to move downward, pressing the workpiece 3 onto the workpiece processing position (that is, the workpiece 3 is located on the two chamfering punch fixing seats 1.5, and its two sides are stuck on the surface of the chamfering punch 1.9). At the same time, the upper driving block 2 moves downward and first contacts the chamfering concave die 1.6 (the fourth inclined surface 1.16 contacts the second inclined surface 1.14), pushing the chamfering concave die 1.6 to move horizontally inward. The chamfering concave die 1.6 is finally limited at the second limiting block 1.11. At this time, the chamfering concave die 1.6 is in close contact with the surface of the workpiece 3 product.

[0037] The upper driving block 2 continues to move downward. The upper driving block 2 contacts the chamfered bump 1.7 (the third inclined plane 1.15 contacts the first inclined plane 1.13), pushing the chamfered bump 1.7 to move outward. At the same time, the chamfered bump 1.7 drives the chamfering punching mechanism to move laterally outward through the chamfering punch fixing seat 1.5, thereby driving the workpiece 3 to compress the polyurethane ring 1.22, and the chamfering punch 1.9 completes the chamfering;

[0038] The machine tool reaches the bottom dead center, and the machine tool drives the upper driving block 2 to move upward. The chamfered bump 1.7 and the chamfering punching mechanism move laterally to reset, the chamfering punch 1.9 retracts, the upper driving block 2 continues to rise, and the chamfering female die 1.6 moves to reset, completing the processing closed loop of the workpiece 3.

[0039] The compound die with a double-acting structure for side punching and side chamfering in this embodiment can also perform side punching on the workpiece 3, and the steps are the same as the chamfering process.

[0040] For ease of explanation, spatially relative terms such as "upper", "lower", "left", and "right" are used in the embodiments to describe the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations during the use or operation of the device. For example, if the device in the figure is inverted, the element described as being "below" other elements or features will be positioned "above" the other elements or features. Therefore, the exemplary term "lower" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here can be interpreted accordingly.

[0041] Moreover, relational terms such as "first" and "second" are only used to distinguish one component with the same name from another, and do not necessarily require or imply any such actual relationship or order between these components.

[0042] The above makes an exemplary description of the present invention. It should be noted that without departing from the core of the present invention, any simple deformation, modification, or equivalent replacement that can be made by those skilled in the art without creative labor falls within the protection scope of the present invention.

Claims

1. A composite die with a double-action structure of side punching and side chamfering, characterized in that: It includes an upper die unit, an upper driving block and a lower die unit, wherein the upper driving block is mounted on the upper die unit, and the upper die unit is used to drive the upper driving block to reciprocate up and down. In an initial state, the upper driving block is located above the lower die unit; The lower die unit includes a lower pad, a sliding rail, a chamfering punch fixing seat, a chamfering die, a chamfering protrusion and a chamfering punching mechanism. A sliding rail is installed laterally on both longitudinal sides of the lower pad respectively. Two chamfering punch fixing seats are arranged on the lower pad, and the chamfering punch fixing seats are slidably installed between the two sliding rails; the chamfering protrusion is fixedly installed on the lateral outer side of each of the chamfering punch fixing seats, and the chamfering punching mechanism is fixedly installed on the lateral inner side of each of the chamfering punch fixing seats. The chamfering die is slidably installed between the two sliding rails and is located between the chamfering punching mechanism and the chamfering protrusion. A driving block action station is formed between the chamfering protrusion and the chamfering die.

2. The composite mold according to claim 1, characterized in that: The chamfering punching mechanism comprises a chamfering punch mounting protrusion and a chamfering punch. The chamfering punch mounting protrusion is mounted on the chamfering punch fixing seat. A plurality of chamfering punches arranged in sequence and at intervals are arranged on the outer side of the chamfering punch mounting protrusion.

3. The composite mold according to claim 2, characterized in that: A first limit block is arranged between the two chamfering punch mounting protrusions, the first limit block is mounted on the lower pad, a second limit block is mounted on the chamfering punch fixing seat, the second limit block is located between the chamfering die and the chamfering punch mounting protrusion; a third limit block is mounted on the chamfering punch fixing seat, the third limit block is located between the chamfering die and the chamfering protrusion.

4. The composite mold according to claim 3, characterized in that: A spring fixing seat is respectively arranged at the two lateral ends of the lower pad, the sliding track is located between the two spring fixing seats, two distance screws are installed laterally on the chamfering die, the distance screws pass through the chamfering protrusion and the spring fixing seat in sequence, a first spring is installed on the distance screw located on the outer side of the spring fixing seat, the first spring provides an outward force to the chamfering die, so that the lower limit of the chamfering die in the initial state is located at the third limit block.

5. The composite mold according to claim 4, characterized in that: A second spring is arranged between the chamfered protrusion and the spring fixing seat, and the second spring provides an inward force to the chamfered protrusion so that the lower limit of the chamfered punch mounting protrusion is located at the first limit block in the initial state.

6. The composite mold according to claim 1, characterized in that: The opposing surfaces of the chamfered protrusion and the chamfered die are the first inclined surface, the opposing surfaces of the chamfered die and the chamfered protrusion are the second inclined surface, the length of the first inclined surface is greater than the length of the second inclined surface, and the slope of the first inclined surface is greater than the slope of the second inclined surface, the opposing surface of the upper driving block and the chamfered protrusion is the third inclined surface, the length and slope of the third inclined surface match the first inclined surface, the opposing surface of the upper driving block and the chamfered die is the fourth inclined surface, the length and slope of the fourth inclined surface match the second inclined surface, and the lower base edges of the third inclined surface and the fourth inclined surface are located in the same horizontal plane.

7. The composite mold according to claim 4, characterized in that: The lower pad is installed on the lower die base, and the spring fixing seat is installed on the lower die base.

8. The composite mold according to claim 2, characterized in that: A punch fixing plate is fixedly installed on the opposite side surfaces of the two chamfering punch mounting protrusions by pin screws, and three chamfering punches are longitudinally arranged and installed in sequence on the punch fixing plate, and each of the chamfering punches is covered with a polyurethane ring.

9. The composite mold according to claim 5, characterized in that: A spring fixing plate is fixedly mounted on the outer side of the spring fixing seat, and the second spring passes through the spring fixing seat and is mounted on the spring fixing plate.

10. The composite mold according to claim 2, characterized in that: Two pressing plates are installed at intervals on the sliding track, and the two chamfering punch installation protrusions are located between the two pressing plates.

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