Pin bending and stamping integrated die for alloy resistor

Abstract

The utility model provides a pin bending and stamping integrated die for an alloy resistor. The pin bending and stamping integrated die comprises an upper die, a lower die and a waste recovery box, the upper die is provided with a positioning needle, a pre-pressing head, a shaping block and a plurality of stamping cutters, the stamping cutters are arranged at intervals in the conveying direction of alloy materials, each stamping cutter comprises a limiting sleeve, a pressing block and a plurality of blades, and the blades are contained in the limiting sleeves and penetrate through the pressing blocks to face the lower die; the lower die comprises a die plate, a bending pad and a plurality of blanking insert blocks, a material conveying channel is arranged on the die plate, die holes are formed in the blanking insert blocks, and the material conveying channel is provided with a concave part; the waste recovery box comprises a box body and a magnetic suction plate. In conclusion, the stamping cutter conducts stamping and rim charge cutting on the alloy material, the pre-pressing head and the shaping block are used for conducting bending operation on the alloy material, the stamping process and the bending process are integrated on the same die, transferring operation does not need to be conducted on a semi-finished product, the manufacturing cost of equipment is reduced, and the production efficiency of the alloy resistor is further improved.

Description

Technical Field

[0001] The utility model relates to a pin bending and stamping integrated die for an alloy resistor, in particular to a pin bending and stamping integrated die for an alloy resistor. Background Art

[0002] like Figure 1 An alloy resistor 20 is shown, which includes a resistor body 21 and a plurality of pins 22, wherein a transition portion 23 is provided at the junction of the pins 22 and the resistor body 21, and the transition portion 23 needs to be bent. The alloy resistor 20 is made of a thin plate-shaped alloy material, and the main processes are stamping and bending. During processing, the alloy material is stamped by a punch press, and the obtained semi-finished product is in a straight plate shape, and then the obtained semi-finished product is transferred to a bending station for bending to form the transition portion 23.

[0003] It can be seen that the processing of the alloy resistor 20 requires two processes, stamping and bending. Accordingly, stamping dies and bending dies need to be configured, and the equipment manufacturing cost is high. After the stamping is completed, the semi-finished product needs to be transferred to the bending station for further processing, which will reduce the production efficiency of the product. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a pin bending and stamping integrated die for alloy resistors, which completes the two processes of stamping and bending on a single die, reduces the equipment manufacturing cost, and improves the production efficiency of the product.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A pin bending and stamping integrated die for alloy resistors, comprising: an upper die, a lower die and a waste recovery box;

[0007] The upper die is provided with a positioning pin, a pre-pressing head, a shaping block and a plurality of punching cutters, the plurality of punching cutters are arranged at intervals along the transmission direction of the alloy material, the punching cutters include a limiting sleeve, a pressing block and a plurality of blades, the blades are accommodated in the limiting sleeve, and the blades penetrate the pressing block toward the lower die;

[0008] The lower die comprises a template, a bending pad and a plurality of blanking blocks, the template is provided with a feeding channel, the alloy material is transmitted along the extension direction of the feeding channel, the bending pad and the plurality of blanking blocks are located in the feeding channel, a die hole matching the blade is opened on the blanking block, and a concave portion matching the shaping block is provided at the end of the feeding channel;

[0009] The waste recovery box includes a box body and a magnetic plate. The bottom of the lower mold is provided with an avoidance cavity. The mold hole is connected with the avoidance cavity. The magnetic plate is laid in the avoidance cavity. The box body is movably arranged on the magnetic plate.

[0010] In one embodiment, the limiting sleeve is provided with a latch, and the blade is provided with a notch matching the latch.

[0011] In one embodiment, the magnetic attraction plate includes a substrate and a plurality of magnetic sheets.

[0012] In one of the embodiments, a roller is disposed on the base plate, and the roller abuts against the box body.

[0013] In one embodiment, a handle is provided on the outer side of the box body.

[0014] In one embodiment, an inner side of the box body is provided with an inclined surface.

[0015] In one embodiment, a guide shaft is provided between the upper die and the lower die.

[0016] In one embodiment, the depth of the feed channel is less than the thickness of the alloy material.

[0017] In one of the embodiments, the upper die is provided with a pin trimming block.

[0018] In one embodiment, the upper mold is provided with a cutting block.

[0019] The above-mentioned integrated die for bending and stamping the pins of alloy resistors has the following advantages:

[0020] 1. The stamping cutter is used to stamp the alloy material and cut off the edge material. The pre-pressing head and the shaping block are used to bend the alloy material. The stamping and bending processes are integrated on the same mold, and there is no need to transfer the semi-finished product, which reduces the production cost of the equipment and improves the production efficiency of the alloy resistor.

[0021] 2. The blade and the limit sleeve are detachable, making the stamping cutter modular. The blade can be detached and replaced when worn, which reduces the maintenance difficulty and the maintenance cost of the mold;

[0022] 3. The magnetic suction plate can absorb the waste in the box body to prevent the vibration generated by the stamping process from causing the waste to jump and fall into the workshop or the conveying channel, thereby reducing the maintenance cost of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is the structural diagram of the alloy resistor;

[0025] Figure 2 It is a structural schematic diagram of a pin bending and stamping integrated die for alloy resistors;

[0026] Figure 3 It is a cross-sectional schematic diagram of a pin bending and stamping integrated die for alloy resistors;

[0027] Figure 4 It is a structural schematic diagram of the upper die;

[0028] Figure 5 It is a side view of the semi-finished product after bending;

[0029] Figure 6 This is a schematic diagram of the disassembly of the waste recycling box;

[0030] Figure 7 Schematic diagram of the structure of the blanking insert

[0031] Figure 8 It is a schematic diagram of the cooperation between the punching cutter and the blanking insert;

[0032] Fig. 9 Schematic diagram of the splitting of the punch cutter. DETAILED DESCRIPTION

[0033] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0034] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0036] See also Figure 2 The utility model provides a pin bending and stamping integrated die 10 for alloy resistors, which includes: an upper die 100, a lower die 200 and a waste recovery box 300. The die is set on a punching machine, and the punching machine drives the upper die 100 to rise and fall to achieve mold closing and mold opening. When the upper die 100 and the lower die 200 are closed, the alloy material 30 entering the die is stamped and bent.

[0037] See also Figure 3 , Figure 4 and Figure 8 The upper die 100 is provided with a positioning pin 110, a pre-pressing head 120, a shaping block 130 and a plurality of punching cutters 140. The plurality of punching cutters 140 are arranged at intervals along the transmission direction of the alloy material 30. The punching cutter 140 includes a limiting sleeve 141, a pressing block 142 and a plurality of blades 143. The blades 143 are received in the limiting sleeve 141, and the blades 143 penetrate the pressing block 142 toward the lower die 200. The positioning pin 110 is used to punch a positioning hole on the edge of the alloy material 30. When the punching cutter 140 punches the alloy material 30, the punching position is anchored by the positioning hole to improve the punching accuracy.

[0038] See also Figure 3 and Figure 7 The lower die 200 includes a template 210, a bending pad 220 and a plurality of blanking blocks 230. The template 210 is provided with a feeding channel 211. The alloy material 30 is transported along the extending direction of the feeding channel 211. The bending pad 220 and the plurality of blanking blocks 230 are located in the feeding channel 211. The blanking blocks 230 are provided with a die hole 231 matching the blade 143. When the die is closed, the punch cutter 140 is inserted into the die hole 231 to cut off the edge material on the alloy material 30. The end of the feeding channel 211 is provided with a recessed portion 211a matching the shaping block 130.

[0039] See also Figure 3 and Figure 6 The waste recycling box 300 includes a box body 310 and a magnetic plate 320. The bottom of the lower mold 200 is provided with an avoidance cavity 240. The mold hole 231 is connected to the avoidance cavity 240. The magnetic plate 320 is laid in the avoidance cavity 240. The box body 310 is movably arranged on the magnetic plate 320. Preferably, a handle 311 is provided on the outer side of the box body 310.

[0040] See also Figure 3 The edge materials cut off by the punching cutter 140 fall into the box body 310 along the die hole 231, and the alloy material 30 itself is a magnetic metal, so after it falls into the box body 310, it will be adsorbed to the bottom of the box by the magnetic suction plate 320. In this way, the vibration generated when the upper mold 100 and the lower mold 200 are closed cannot cause these edge materials to jump, which can effectively prevent the edge materials generated during the punching process from scattering in the workshop and the stamping machine to interfere with normal production. It only needs to dump the edge materials in the box body 310 regularly, which is convenient for cleaning, which is conducive to reducing the difficulty of equipment maintenance and improving the production efficiency of alloy resistors.

[0041] When the upper die 100 and the lower die 200 are closed, the punch cutter 140 cooperates with the blanking insert 230 to cut off the edge material on the alloy material 30 . Multiple punch cutters 140 cooperate to perform multiple punching actions to punch and form the prototype of the lead 22 on the alloy material 30 .

[0042] The semi-finished product that has just completed the punching operation is in the shape of a straight plate. When it moves below the pre-pressing head 120, the pre-pressing head 120 presses the pin 22 into the bending pad 220. Due to the height difference at the position of the bending pad 220, the pin 22 sinks and is misaligned with the resistor body 21. At this time, the cross-sectional shape of the semi-finished product is as follows: Figure 5 As shown in the upper side view, the pre-pressing head 120 cooperates with the bending pad 220 to perform the first bending of the semi-finished product;

[0043] When the semi-finished product after pre-pressing moves to the bottom of the shaping block 130, the shaping block 130 presses the pin 22 into the recessed portion 211a, completing the second bending action, so that the semi-finished product is shaped. At this time, the pin 22 is parallel to the resistor body 21. At this time, the cross-sectional shape of the semi-finished product is as follows: Figure 5 As shown in the lower side view;

[0044] like Figure 5 As shown, two bending actions form a transition portion 23 between the semi-finished resistor body 21 and the pin 22, wherein the first bending is pre-stressing and the second bending is shaping, so as to avoid rebounding and ensure that the parallelism between the resistor body 21 and the pin 22 in the obtained product meets the production standards.

[0045] The above-mentioned integrated die 10 for bending and stamping the pins of the alloy resistor has the following advantages:

[0046] 1. The punching cutter 140 punches and cuts off the alloy material 30, and the pre-pressing head 120 and the shaping block 130 are used to bend the alloy material 30. The punching and bending processes are integrated on the same mold, and there is no need to transfer the semi-finished product, which reduces the manufacturing cost of the equipment and improves the production efficiency of the alloy resistor;

[0047] 2. The blade 143 and the limiting sleeve 141 are detachable, so that the punching cutter 140 is modularized. The blade 143 can be detached and replaced when worn, which reduces the maintenance difficulty and the maintenance cost of the mold;

[0048] 3. The magnetic suction plate 320 can absorb the waste materials in the box body 310, so as to prevent the waste materials from jumping and falling into the workshop or the material conveying channel 211 due to the vibration generated during the stamping process, thereby reducing the maintenance cost of the equipment.

[0049] See also Figure 8 and Fig. 9 In one embodiment, a latch 144 is provided on the limiting sleeve 141, and a notch 143a matching the latch 144 is provided on the blade 143. When the blade 143 is worn and needs to be replaced, the punching cutter 140 is first taken out of the upper mold 100, and the blade 143 can be pulled out of the limiting sleeve 141 after the latch 144 is pulled out, and a new blade 143 is replaced. After the notch 143a on the new blade 143 is aligned with the hole position on the limiting sleeve 141, the latch 144 is inserted, and the latch 144 passes through the notch 143a to lock the blade 143 in the limiting sleeve 141. The replacement process is simple, and the damaged blade 143 can be replaced alone without replacing the entire punching cutter 140, which is conducive to reducing the maintenance cost of the mold.

[0050] See also Figure 3 and Figure 6 In one embodiment, the magnetic attraction plate 320 includes a base plate 321 and a plurality of magnetic sheets 322 . The base plate 321 is provided with a roller 323 , and the roller 323 abuts against the box body 310 , so that the box body 310 can slide smoothly on the base plate 321 .

[0051] See also Figure 3 In one embodiment, an inclined surface 312 is provided on the inner side of the box body 310 to guide the edge material to fall into the bottom of the box body 310 .

[0052] See also Figure 2 In one embodiment, a guide shaft 400 is provided between the upper mold 100 and the lower mold 200. The guide shaft 400 limits the horizontal freedom of the upper mold 100 to improve the accuracy of the mold closing action.

[0053] See also Figure 3 and Figure 4 In one embodiment, the upper die 100 is provided with a pin trimming block 150, which is used to shape the pins 22. Furthermore, the upper die 100 is provided with a cutting block 160. The portion of the alloy material 30 after the stamping and bending operation is moved to the cutting block 160, and the cutting block 160 performs a cutting operation to separate the alloy resistor 20 from the main body of the alloy material 30.

[0054] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A pin bending and stamping integrated die for alloy resistors, characterized in that: include: Upper mold, lower mold and waste recycling box; The upper die is provided with a positioning pin, a pre-pressing head, a shaping block and a plurality of punching cutters, the plurality of punching cutters are arranged at intervals along the transmission direction of the alloy material, the punching cutters include a limiting sleeve, a pressing block and a plurality of blades, the blades are accommodated in the limiting sleeve, and the blades penetrate the pressing block toward the lower die; The lower die comprises a template, a bending pad and a plurality of blanking blocks, the template is provided with a feeding channel, the alloy material is transmitted along the extension direction of the feeding channel, the bending pad and the plurality of blanking blocks are located in the feeding channel, a die hole matching the blade is opened on the blanking block, and a concave portion matching the shaping block is provided at the end of the feeding channel; The waste recovery box includes a box body and a magnetic plate. The bottom of the lower mold is provided with an avoidance cavity. The mold hole is connected with the avoidance cavity. The magnetic plate is laid in the avoidance cavity. The box body is movably arranged on the magnetic plate.

2. The pin bending and stamping integrated die for alloy resistors according to claim 1, characterized in that: The limiting sleeve is provided with a latch pin, and the blade is provided with a notch matching the latch pin.

3. The pin bending and stamping integrated die for alloy resistors according to claim 1, characterized in that: The magnetic attraction plate includes a substrate and a plurality of magnetic sheets.

4. The pin bending and stamping integrated die for alloy resistors according to claim 3, characterized in that: A roller is arranged on the base plate, and the roller abuts against the box body.

5. The pin bending and stamping integrated die for alloy resistors according to claim 1, characterized in that: A handle is arranged on the outer side of the box body.

6. The integrated die for bending and stamping the pins of the alloy resistor according to claim 1, characterized in that: An inclined surface is arranged on the inner side of the box body.

7. The integrated die for bending and stamping the pins of the alloy resistor according to claim 1, characterized in that: A guide shaft is provided between the upper die and the lower die.

8. The integrated die for bending and stamping the pins of the alloy resistor according to claim 1, characterized in that: The depth of the feed channel is less than the thickness of the alloy material.

9. The integrated die for bending and stamping the pins of the alloy resistor according to claim 1, characterized in that: The upper die is provided with a pin trimming block.

10. The integrated die for bending and stamping the pins of the alloy resistor according to claim 1, characterized in that: The upper die is provided with a cutting block.

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