Synchronous extrusion stripping die

Abstract

The utility model relates to a synchronous extrusion stripping die which comprises an upper die base, a lower die base, an upper padding plate, an upper clamping plate, a stopping plate, a stripping plate, a lower die plate and a lower padding plate, a first spring is arranged on the inner side of the upper die base and abuts against a first ejector rod downwards, and an empty groove is formed in the upper clamping plate in the moving direction of the first ejector rod. An empty groove is formed in the lower die plate, an extrusion punch movably slides into the empty groove, a protrusion matched with an extrusion female die on the inner side of the lower die plate is arranged at the bottom of the extrusion punch, a longitudinally-penetrating channel is formed in the middle of the extrusion female die, a stripping block is assembled in the channel, and the bottom end of the stripping block abuts against the top end of a stripping ejector rod. The stripping ejector rod is movably installed in the lower base plate and the lower die base and elastically and upwards abuts against the stripping block. According to the utility model, the appearance of a product is limited, so that the accuracy of the appearance of the product is effectively improved, materials extruded from the extrusion groove can flow towards the thickness direction of the materials, and the thickness is fully supplemented.

Description

Technical Field

[0001] This utility model relates to the field of mold processing and production equipment, and in particular to a synchronous extrusion and stripping mold. Background Technology

[0002] Currently, the standard requirements for copper clips on many inductors on the market are: the ratio of product width to material thickness ≤ 1.2mm, and a groove in the middle of the product, with the groove width accounting for 50% of the product width. In existing technology, the middle groove is processed by extrusion. However, because the distance between the groove and the product edge is ≤ 1 / 3 of the material thickness, the product edge will be pulled indented during extrusion, causing the product thickness to become thinner and exceed the lower limit of the specification. Since it is free extrusion, the product will flow outward, causing the product width to become wider and exceed the upper limit of the specification. This results in the extruded product width exceeding the specification and the extruded product thickness exceeding the lower limit of the specification, making it impossible to accurately control the product shape.

[0003] Therefore, it is necessary to improve and optimize the existing molds. To this end, we propose a synchronous extrusion stripping mold. Utility Model Content

[0004] (1) Technical problems to be solved

[0005] To address the aforementioned problems in the prior art and to overcome its shortcomings, this utility model provides a synchronous extrusion and stripping die that can be reasonably manufactured and used.

[0006] (2) Technical solution

[0007] To solve the above-mentioned technical problems, this utility model provides a synchronous extrusion stripping die, including an upper die base and a lower die base. The lower die base has an upper pad, an upper clamping plate, and a stop plate arranged sequentially below it. The upper end of the lower die base has a stripping plate, a lower template, and a lower pad arranged sequentially from top to bottom. A first spring is provided on the inner side of the upper die base, and the first spring abuts downward against a first push rod. The upper clamping plate has a slot along the direction of movement of the first push rod, and an extrusion punch can be movably slid into the slot. The lower end of the extrusion punch passes through the stop plate and terminates on the stripping plate. The bottom of the extrusion punch has a protrusion that mates with the extrusion die inside the lower template. The inclined surface of the extrusion die fully mates with the inclined surface of the extrusion punch. A longitudinally penetrating channel is provided in the middle of the extrusion die, and a stripping block is assembled in the channel. The bottom end of the stripping block abuts against the top end of a stripping push rod. The stripping push rod is movably installed in the lower pad and the lower die base and elastically abuts upward against the stripping block.

[0008] Preferably, during assembly, a top cover plate is pressed onto the top of the upper mold base.

[0009] Preferably, the first push rod is vertically confined within the upper pad.

[0010] Preferably, the outer ring of the end of the extrusion punch is provided with a punch guide block, the punch guide block is located in the middle of the stripper plate, and the through groove in the center of the punch guide block is fitted with the outer surface of the top end of the extrusion die.

[0011] Preferably, the extrusion die is sleeved on the inner side of the pressure relief ejector rod, which passes through the lower template and the lower pad from top to bottom and extends downward into the lower die base.

[0012] Preferably, a second spring is provided below the stripping top rod, and the second spring is limited by a locking screw that locks from bottom to top.

[0013] Preferably, a second pad is sandwiched between the stripping rod and the second spring, and the bottom of the pressure relief rod also abuts against the second pad and is indirectly lifted by the second spring.

[0014] Preferably, the bottom of the extrusion die is provided with a first pad, which is pressed onto the upper part of the lower pad by the extrusion die.

[0015] Preferably, in use, the pressure relief push rod is pressed down by the punch guide block around the extrusion punch, and its height is lower than the top height of the extrusion die.

[0016] (3) Beneficial effects

[0017] This invention overcomes the shortcomings of existing technologies where freely extruded products flow outwards, causing the product width to exceed the upper limit of the specification, resulting in the extruded product width exceeding the specification limit and the extruded product thickness exceeding the lower limit of the specification, thus making it impossible to precisely control the product shape. This invention has the following advantages:

[0018] 1. Because the structure of this solution limits the product shape during extrusion, it effectively improves the accuracy of the product shape, allowing the accuracy of the product shape to be greatly improved to ±0.05.

[0019] 2. Because the structure of this solution limits the product shape during extrusion, the material extruded from the extrusion groove can flow in the direction of material thickness, so that the thickness is fully supplemented. During processing, the thickness of the product can be improved to an accuracy of ±0.05. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of the overall structure of this utility model in the closed mold state;

[0021] Figure 2 This is a cross-sectional view of the overall structure of this utility model in the mold-open state;

[0022] Figure 3 for Figure 1A magnified structural diagram of part A in the middle;

[0023] Figure 4 for Figure 2 A magnified structural diagram of part B.

[0024] The attached diagram is labeled as follows: 1 Upper mold base, 2 Upper pad, 3 Upper clamping plate, 4 Stop plate, 5 Stripper plate, 6 Lower template, 7 Lower pad, 8 Lower mold base, 9 Upper cover plate.

[0025] 11 First spring, 12 First ejector pin, 13 Extrusion punch, 14 Punch guide block, 15 Extrusion die, 16 Stripper block, 17 First pad block, 18 Stripper ejector pin, 19 Force relief ejector pin, 20 Second pad block, 21 Second spring, 22 Set screw. Detailed Implementation

[0026] The present invention will be further described in conjunction with the accompanying drawings and embodiments.

[0027] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "vertical", "horizontal", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] like Figure 1-4 As shown, this utility model provides an embodiment of a synchronous extrusion stripping die, including an upper die base 1 and a lower die base 8. The lower part of the upper die base 1 is sequentially provided with an upper pad 2, an upper clamping plate 3, and a stop plate 4. The upper end of the lower die base 8, from top to bottom, is sequentially provided with a stripping plate 5, a lower template 6, and a lower pad 7. The inner side of the upper die base 1 is provided with a first spring 11, which abuts against a first push rod 12. The upper clamping plate 3 has a slot along the direction of movement of the first push rod 12, and an extrusion punch 13 can be movably slid into the slot. The lower end of the extrusion punch 13 passes through the stop plate 4 and terminates on the stripper plate 5. The bottom of the extrusion punch 13 is provided with a protrusion that cooperates with the extrusion die 15 inside the lower template 6. The inclined surface of the extrusion die 15 is fully engaged with the inclined surface of the extrusion punch 13. The middle part of the extrusion die 15 is provided with a longitudinal through channel. A stripper block 16 is installed in the channel. The bottom end of the stripper block 16 abuts against the top end of the stripper ejector rod 18. The stripper ejector rod 18 is movably installed in the lower pad plate 7 and the lower die base 8 and elastically abuts against the stripper block 16 upward.

[0029] During assembly, an upper cover plate 9 is pressed onto the top of the upper mold base 1, facilitating the pressing of the upper mold base 1 from top to bottom to form a closed mold state. The first ejector rod 12 is vertically confined within the upper pad plate 2, allowing the first ejector rod 12 to move vertically along the upper pad plate 2. The outer ring of the end of the extrusion punch 13 is provided with a punch guide block 14, which guides the extrusion punch 13. The punch guide block 14 is located in the middle of the stripper plate 5. During use, the punch guide block 14 presses down onto the pressure relief ejector rod 19. After assembly, the through groove in the center of the punch guide block 14 fits into the outer surface of the top end of the extrusion die 15. The extrusion die 15 is sleeved on the inner side of the pressure relief ejector rod 19. The pressure relief ejector rod 19 passes through the lower mold plate 6 and the lower pad plate 7 from top to bottom and extends downward to the lower mold base 8. Inside, a second spring 21 is provided below the stripper rod 18, and the second spring 21 is limited by a locking screw 22 that is locked from bottom to top; a second pad 20 is sandwiched between the stripper rod 18 and the second spring 20, and the bottom of the pressure relief rod 19 also abuts against the second pad 20 and is indirectly lifted by the second spring 20; a first pad 17 is provided at the bottom of the extrusion die 15, and the first pad 17 is pressed by the extrusion die 15 above the lower pad plate 7, and the first pad 17 is set so that the height of the highest point of the extrusion die is flush with the height of the highest point of the pressure relief rod when the die is open; in use, the pressure relief rod 19 is pressed down by the punch guide block 14 around the extrusion punch 13, and its height is lower than the top height of the extrusion die 15.

[0030] In practical use, see the attached document. Figure 2 The process begins with the upper die base descending to the stripper plate and contacting the material strip. At this point, the extrusion punch contacts the material to be processed.

[0031] The upper die holder drives the upper backing plate and upper clamping plate to continue descending until the punch guide block contacts the pressure relief ejector. Then it continues descending, and the punch guide block pushes the pressure relief ejector down until the stripper plate contacts the lower die plate. At this point, the material to be processed smoothly enters the extrusion die. The inclined surface of the extrusion die fully engages with the inclined surface of the punch guide block. The upper die holder continues to descend, driving the extrusion punch downwards to press the material to be processed until the die closes. (See attached...) Figure 1 The state, i.e., the squeezing action is complete;

[0032] After extrusion, the die moves upward, the stripper plate leaves the lower die plate, and the pressure relief ejector rod is reset by the second spring. The second spring pushes the second pad and the stripper rod upward to complete the stripping. The upper die holder moves the upper pad, upper clamping plate, extrusion punch, stop plate, and stripper plate upward. The stripper plate leaves the material strip and continues to move upward to the top dead center to complete one cycle. In this way, the surface accuracy of the product can be greatly improved to ±0.05, and the thickness accuracy of the product can be improved to ±0.05.

[0033] The above embodiments only illustrate preferred embodiments of the present invention, and their descriptions are relatively specific and detailed. However, the present invention is not limited to these embodiments. It should be noted that for those skilled in the art, any improvements made without departing from the spirit of the present invention fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A synchronous extrusion stripping die, comprising an upper die base and a lower die base, wherein an upper pad, an upper clamping plate, and a stop plate are sequentially arranged below the upper die base; and a stripping plate, a lower template, and a lower pad are sequentially arranged from top to bottom at the upper end of the lower die base, characterized in that: The upper die base has a first spring on its inner side, which abuts against a first ejector rod. The upper clamping plate has a slot along the direction of movement of the first ejector rod, and an extrusion punch can be movably slid into the slot. The lower end of the extrusion punch passes through a stop plate and terminates on a stripper plate. The bottom of the extrusion punch has a protrusion that mates with the extrusion die on the inner side of the lower die plate. The inclined surface of the extrusion die is fully engaged with the inclined surface of the extrusion punch. The middle part of the extrusion die has a longitudinal through-channel, and a stripper block is installed in the channel. The bottom end of the stripper block abuts against the top end of the stripper ejector rod. The stripper ejector rod is movably installed in the lower pad and the lower die base and elastically abuts against the stripper block.

2. The synchronous extrusion stripping die according to claim 1, characterized in that: During assembly, a top cover plate is pressed onto the top of the upper mold base.

3. The synchronous extrusion stripping die according to claim 1, characterized in that: The first push rod is vertically confined within the upper pad.

4. The synchronous extrusion stripping die according to claim 1, characterized in that: The extrusion punch has a punch guide block on its outer end ring. The punch guide block is located in the middle of the stripper plate. The through groove in the center of the punch guide block fits into the outer surface of the top end of the extrusion die.

5. The synchronous extrusion stripping die according to claim 1, characterized in that: The extrusion die is sleeved on the inner side of the pressure relief ejector rod, which passes through the lower template and the lower pad from top to bottom and extends downward into the lower die base.

6. A synchronous extrusion stripping die according to any one of claims 1-5, characterized in that: A second spring is provided below the stripping top rod, and the second spring is limited by a locking screw that is locked from bottom to top.

7. A synchronous extrusion stripping die according to claim 6, characterized in that: A second pad is sandwiched between the stripping top rod and the second spring, and the bottom of the pressure relief top rod also abuts against the second pad and is indirectly lifted by the second spring.

8. The synchronous extrusion stripping die according to claim 7, characterized in that: The bottom of the extrusion die is provided with a first pad, which is pressed onto the upper part of the lower pad by the extrusion die.

9. A synchronous extrusion stripping die according to claim 8, characterized in that: In use, the pressure relief push rod is pressed down by the punch guide block around the extrusion punch, and its height is lower than the top height of the extrusion die.

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