Trimming die for aluminum alloy lightweight die casting

Abstract

The utility model relates to the field of part processing, and discloses a trimming die for an aluminum alloy light-weight die casting, which is characterized in that the middle part of an upper plate is provided with a mounting opening for a lower edge die to extend out, a concave die is arranged around the mounting opening, and the upper end of the lower edge die extends out of the upper side of the upper end surface of the concave die in an initial state; the upper end face of the lower edge die is a mounting face for mounting a workpiece to be machined, a return mechanism is arranged on the bottom plate, and the upper end of the return mechanism is supported at the bottom of the lower edge die. The upper edge die comprises a pressing plate, the projection of the pressing plate in the vertical direction falls on the mounting surface, the pressing plate is pressed on the mounting surface to clamp a workpiece to be machined and drive the lower edge die to move downwards, burrs of the workpiece to be machined abut against the female die, the female die cuts the workpiece to be machined, the upper edge die returns after cutting is completed, and the return mechanism drives the lower edge die to return. The trimming die has the advantages of being high in efficiency, stable in work, low in labor intensity and the like.

Description

Technical Field

[0001] The utility model relates to the field of punching and shearing dies, in particular to a trimming die for lightweight aluminum alloy die castings. Background Art

[0002] For aluminum alloy die castings that are fed from the side, a feed handle connected to the edge of the die casting will be left after molding. Chinese patent application CN201410538666.2 discloses a double-sided trimming die, which is usually removed by manual knocking and trimming the burrs with tools such as grinders to make the surface of the die casting meet the requirements. Therefore, the speed of removing the material handle is slow, and the die casting is easily deformed during the knocking process. It is also laborious and the investment in labor costs is also large.

[0003] In order to improve work efficiency, people will design and manufacture trimming dies specifically for trimming, which include a punch seat and a die seat. The die seat is provided with a trimming blade, and a positioning structure adapted to the outer contour of the die-casting is set to place the die-casting to be trimmed, so as to ensure that the product is removed from the feed handle and the like by a method similar to punching. Utility Model Content

[0004] The utility model aims at the shortcomings of the prior art and provides a trimming die for lightweight aluminum alloy die castings.

[0005] In order to solve the above technical problems, the utility model is solved by the following technical solutions:

[0006] A trimming die for lightweight aluminum alloy die castings comprises a bottom plate, a bracket is arranged on the bottom plate, a guide column is arranged on the inner side of the bracket, a lower die is sleeved on the guide column, an upper plate parallel to the bottom plate is arranged on the upper side of the bracket, a mounting opening for the lower die to extend out is arranged in the middle of the upper plate, a concave die is arranged around the mounting opening, the upper end of the lower die extends out on the upper side of the upper end face of the concave die in an initial state, the upper end face of the lower die is a mounting surface for mounting a workpiece to be processed, a return mechanism is arranged on the bottom plate, the upper end of the return mechanism is supported on the bottom of the lower die; and an upper die is also included, the upper die comprises a pressing plate, the projection of the pressing plate in the up and down directions falls on the mounting surface, the pressing plate is pressed on the mounting surface to clamp the workpiece to be processed and drives the lower die to move downward, the burr of the workpiece to be processed contacts the concave die, the concave die cuts it, and after completion, the upper die returns, and the return mechanism drives the lower die to return.

[0007] Preferably, the lower mold includes a guide frame, which is mounted on a guide column and can slide up and down along the guide column. A mounting frame for mounting the workpiece to be processed is fixedly installed on the upper end of the guide frame, and the mounting frame is fixed to the upper end of the guide frame by bolts; the upper end surface of the mounting frame is a mounting surface, and a recessed groove for positioning the product is provided on the mounting surface.

[0008] Preferably, the upper plate is provided with only a guide rod on the outer side of the concave die, and a guide sleeve is provided on the upper side die. When the upper side die moves downward, the guide rod and the guide sleeve cooperate and slide.

[0009] Preferably, the pressing plate is arranged in a vertical direction, and a relief groove for avoiding the workpiece to be processed is arranged on the lower side of the pressing plate.

[0010] Preferably, the number of guide columns is at least two, and the number of guide rods is at least two.

[0011] Preferably, the return device is a return spring.

[0012] Preferably, the return device is a pneumatic cylinder or a hydraulic cylinder.

[0013] Preferably, the mounting bracket and the inner ring of the die are clearance-fitted.

[0014] The utility model adopts the above technical solution, and has the following significant technical effects:

[0015] The trimming die designed by the utility model has the advantages of high trimming efficiency, stable trimming, low labor intensity, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the device.

[0017] Figure 2 It is a schematic diagram of the overall structure of the device.

[0018] Figure 3 It is a structural diagram of the upper mold.

[0019] Figure 4 It is a schematic diagram of the mechanism of the device of Example 3.

[0020] The technical names of the figures are: 1-base plate, 2-bracket, 3-guide column, 4-lower mold, 6-upper plate, 7-installation port, 8-die, 9-installation surface, 10-guide frame, 11-installation frame, 12-sink, 13-guide rod, 14-guide sleeve, 15-avoidance groove, 16-return mechanism, 17-upper mold, 18-pressure plate. DETAILED DESCRIPTION

[0021] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] Example 1

[0023] A trimming die for lightweight aluminum alloy die castings, comprising a base plate 1, a bracket 2 is arranged on the base plate 1, a guide column 3 is arranged on the inner side of the bracket 2, the guide column 3 is a cylindrical structure, a lower side die 4 is sleeved on the guide column 3, the lower side die 4 comprises a lower plate and a vertical plate arranged on the upper part of the lower plate, the number of the vertical plates is two, which are arranged in a vertical direction, and the guide column 3 is also arranged in a vertical direction.

[0024] The upper side of the bracket 2 is provided with an upper plate 6 parallel to the bottom plate 1, wherein the bracket 2 in this embodiment is a plate member vertically mounted on the bottom plate 1. The middle part of the upper plate 6 is provided with a mounting opening 7 for the lower side mold 4 to extend out, and a concave mold 8 is arranged around the mounting opening 7. In the initial state, the upper end of the lower side mold 4 extends out on the upper side of the upper end surface of the concave mold 8, and the upper end surface of the lower side mold 4 is a mounting surface 9 for mounting the workpiece to be processed, and the shape of the mounting surface 9 is adapted to the workpiece to be processed. The bottom plate 1 is provided with a return mechanism 16, and the upper end of the return mechanism 16 is supported on the bottom of the lower side mold 4; and also includes an upper side mold 17, which includes a pressing plate 18, and the projection of the pressing plate 18 in the upper and lower directions falls on the mounting surface 9. The purpose of this structural design is that when the upper side mold 17 positions the workpiece to be processed, it will not interfere with the concave mold 8 on one side, so as to ensure that the workpiece can move to the lower side of the edge of the concave mold 8.

[0025] In this scheme, the pressure plate 18 is a plate member arranged in the vertical direction. The pressure plate 18 presses on the mounting surface 9 to clamp the workpiece to be processed and drives the lower mold 4 to move downward. The burrs of the workpiece to be processed abut against the die 8, and the die 8 cuts it. After completion, the upper mold 17 returns to its original position, and the return mechanism 16 drives the lower mold 4 to return to its original position.

[0026] In this solution, the lower side mold 4 includes a guide frame 10, which is sleeved on the guide column 3 and can slide up and down along the guide column 3. The upper end of the guide frame 10 is fixedly installed with a mounting frame 11 for mounting the workpiece to be processed, and the mounting frame 11 is fixedly installed on the upper end of the guide frame 10 by bolts; the upper end surface of the mounting frame 11 is the mounting surface 9, and the mounting surface 9 is provided with a sink 12 for positioning the product. The mounting frame 11 is designed according to the workpiece to be processed, so as to ensure the matching degree between the workpiece to be processed and the mounting surface 9, and then ensure the accuracy and reliability of the trimming. A positioning hole is provided in the sink 12, and the workpiece to be processed and the mounting frame 11 are connected and fixed by a latch.

[0027] The upper plate 6 is provided with a guide rod 13 on the outer side of the concave die 8, and a guide sleeve 14 is provided on the upper side die 17. When the upper side die 17 moves downward, the guide rod 13 slides with the guide sleeve 14. The pressing plate 18 is arranged in a vertical direction, and a relief groove 15 is provided on the lower side of the pressing plate 18 for avoiding the workpiece to be processed.

[0028] In this embodiment, the return device is a return spring. The mounting frame 11 and the inner circle of the die 8 are clearance-matched.

[0029] The working process of the device is as follows:

[0030] The workpiece to be processed is assembled on the mounting frame 11 and positioned with a latch, and then the upper die 17 is moved down to press the workpiece to be processed on the mounting frame 11, and the workpiece to be processed remains stable and reliable. Then the upper die 17 pushes the lower die 4 to move down, and the burrs of the workpiece will contact the die 8. The inner edge of the die 8 is equivalent to the tool cutting the edge of the workpiece to complete the burr processing. After the processing is completed, the upper die 17 returns to its original position, and the lower die 4 returns to its initial position under the action of the return mechanism 16. The upper end of the mounting frame 11 protrudes on the upper side of the upper end surface of the die 8, and the workpiece is taken out to complete the processing.

[0031] Example 2

[0032] The difference between this embodiment and the first embodiment is that the number of guide pillars 3 is two, and the number of guide rods 13 is two.

[0033] Example 3

[0034] The difference between this embodiment and embodiment 1 is that the return device is a cylinder or a hydraulic cylinder.

Claims

1. A trimming die for lightweight aluminum alloy die castings, comprising a base plate (1), characterized in that: A bracket (2) is arranged on the bottom plate (1), a guide column (3) is arranged on the inner side of the bracket (2), a lower side mold (4) is sleeved on the guide column (3), an upper plate (6) parallel to the bottom plate (1) is arranged on the upper side of the bracket (2), a mounting opening (7) for the lower side mold (4) to extend out is arranged in the middle of the upper plate (6), a concave mold (8) is arranged around the mounting opening (7), and in the initial state, the upper end of the lower side mold (4) extends out of the concave mold (8) The upper side of the end surface, the upper end surface of the lower side mold (4) is a mounting surface (9) for mounting the workpiece to be processed, and a return mechanism (16) is arranged on the bottom plate (1), and the upper end of the return mechanism (16) is supported on the bottom of the lower side mold (4); it also includes an upper side mold (17), and the upper side mold (17) includes a pressing plate (18), and the projection of the pressing plate (18) in the upper and lower directions falls on the mounting surface (9), and the pressing plate (18) is pressed on the mounting surface (9) to clamp the workpiece to be processed.

2. A trimming die for lightweight aluminum alloy die castings according to claim 1, characterized in that: The lower side mold (4) comprises a guide frame (10), the guide frame (10) is sleeved on the guide column (3) and can slide up and down along the guide column (3), the upper end of the guide frame (10) is fixedly mounted with a mounting frame (11) for mounting the workpiece to be processed, and the mounting frame (11) is fixedly mounted on the upper end of the guide frame (10) by bolts; the upper end surface of the mounting frame (11) is a mounting surface (9), and a sink groove (12) for positioning the product is arranged on the mounting surface (9).

3. The trimming die for aluminum alloy lightweight die casting according to claim 1, characterized in that: The upper plate (6) is provided with only a guide rod (13) on the outer side of the concave die (8), and a guide sleeve (14) is provided on the upper side die (17). When the upper side die (17) moves downward, the guide rod (13) and the guide sleeve (14) cooperate to slide.

4. The trimming die for aluminum alloy lightweight die casting according to claim 2, characterized in that: The pressing plate (18) is arranged in a vertical direction, and a relief groove (15) for evading the workpiece to be processed is arranged on the lower side of the pressing plate (18).

5. The trimming die for aluminum alloy lightweight die casting according to claim 3, characterized in that: The number of the guide columns (3) is at least two, and the number of the guide rods (13) is at least two.

6. The trimming die for aluminum alloy lightweight die casting according to claim 1, characterized in that: The return device is a return spring.

7. The trimming die for aluminum alloy lightweight die casting according to claim 1, characterized in that: The return device is a pneumatic cylinder or a hydraulic cylinder.

8. The trimming die for aluminum alloy lightweight die casting according to claim 1, characterized in that: The mounting frame (11) and the inner ring of the concave die (8) are clearance-matched.

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