Cold punching cut-off punching die

Abstract

The utility model provides a cold punching cut-off punching die, which relates to the technical field of punching equipment and comprises a lower die and a positioning backup plate, the lower die comprises a lower female die and a positioning backup plate, the lower female die is provided with a main cutting groove, a first chamfering groove and a second chamfering groove which are arranged in a penetrating manner, and a containing space is defined by the positioning backup plate, the main cutting groove, the first chamfering groove and the second chamfering groove. A workpiece can be embedded into the main cutting groove, and the containing space can contain a workpiece. The upper die comprises an upper pressure plate, a main cutting male die, a first chamfering male die and a second chamfering male die, and when the upper die and the lower die are closed, the main cutting male die is inserted into the main cutting groove, the first chamfering male die is inserted into the first chamfering groove, and the second chamfering male die is inserted into the second chamfering groove, so that a workpiece is cut in the main cutting groove, and another workpiece is cut in the accommodating space. The die has the advantages that a landing edge does not need to be reserved on a product blank, the product blank can be directly and continuously punched, the landing edge part is punched into a workpiece, and the material utilization rate is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping equipment, in particular to a cold punching and cutting punching die. Background Art

[0002] The blanking punching die is a common die process structure in the cold stamping production process. Its characteristics are as follows: the concave die is generally designed on the upper die seat, while the punch is designed on the lower die seat. During blanking, the punching waste leaks out from the leakage hole of the lower die seat, and the blanked workpiece detaches from the bar and falls on the lower return plate and is ejected by the elastic ejector. The workpiece that has been blanked is pushed down by the elastic element on the upper die and the upper pressing core, thereby completing the entire blanking and punching steps. Since the blanking punching die needs to press the material to prevent the product blank from moving during the blanking process and affecting the dimensional accuracy of the workpiece, it is usually necessary to increase the product overlap and perform layout first. In order to maximize material utilization. The overlap value is generally determined by the thickness of the product material. The thicker the material, the larger the overlap value, the lower the material utilization rate, and the higher the production cost. This results in a low material utilization rate and serious material waste in the cold stamping of some trapezoidal workpieces with missing corners. Such as Figure 1 As shown, the corner-less trapezoidal workpiece 200 is a column reinforcement plate on a photovoltaic panel. The conventional blanking and punching die process layout scheme is adopted, and the material utilization rate of the product blank 100 is less than 60%. Utility Model Content

[0003] In view of this, in order to solve the problem of low material utilization and serious material waste during cold stamping and blanking of a notched trapezoidal workpiece, an embodiment of the utility model provides a cold stamping and cutting punching die.

[0004] The embodiment of the utility model provides a cold punching and cutting punching die for processing a notched trapezoidal workpiece, comprising:

[0005] A lower mold, comprising a lower concave mold and a positioning plate, wherein the lower concave mold is provided with a main cutting groove, a first cutting angle groove and a second cutting angle groove which are arranged through the lower concave mold, the positioning plate is arranged on the upper surface of the lower concave mold, the first cutting angle groove and the second cutting angle groove are respectively located on both sides of the positioning plate, and an accommodation space is formed between the positioning plate, the main cutting groove, the first cutting angle groove and the second cutting angle groove, the main cutting groove can be embedded in a workpiece, and the accommodation space can accommodate a workpiece;

[0006] The upper mold includes an upper pressing plate, and a main cutting punch, a first corner cutting punch and a second corner cutting punch arranged on the lower surface of the upper pressing plate. When the upper mold and the lower mold are closed, the main cutting punch is inserted into the main cutting groove, the first corner cutting punch is inserted into the first corner cutting groove, and the second corner cutting punch is inserted into the second corner cutting groove, so that one workpiece is cut in the main cutting groove and another workpiece is cut in the accommodating space.

[0007] Furthermore, the first corner cutting groove and the second corner cutting groove are both rectangular grooves, a side of the first corner cutting groove close to the main cutting groove is aligned with a side of the positioning support plate close to the main cutting groove, and the second corner cutting groove is arranged obliquely.

[0008] Furthermore, the first corner cutting punch and the second corner cutting punch are both rectangular blocks, and the lower surface of the rectangular block is a Z-shaped slope surface.

[0009] Furthermore, the main cutting punch is in the shape of a flat plate.

[0010] Furthermore, the lower mold also includes a plurality of positioning pins, and each of the positioning pins is arranged in a straight line perpendicular to the positioning plate.

[0011] Furthermore, the upper mold also includes an upper mold base, the upper pressing plate can be vertically slidably installed on the upper mold base, and an elastic member is provided between the upper pressing plate and the upper mold base.

[0012] Furthermore, the lower surface of the upper die seat is provided with two guide blocks arranged opposite to each other, and the two guide blocks are respectively inserted into the two ends of the upper pressing plate, and the upper pressing plate can slide vertically along the two guide blocks.

[0013] Furthermore, the upper mold also includes a mold handle, and the mold handle is connected to the back side of the upper mold base.

[0014] Furthermore, the lower mold also includes a lower mold pad and a lower mold base, the lower mold base is fixed on the lower mold pad, and the lower concave mold is fixed on the lower mold base.

[0015] Furthermore, a guide sleeve and an upper limit stopper are provided on the lower surface of the upper die base, and a guide column and a lower limit stopper are provided on the upper surface of the lower die base. When the upper die and the lower die are closed, the guide column is inserted into the guide sleeve, and the lower limit stopper is docked with the upper limit stopper.

[0016] The beneficial effect brought about by the technical solution provided by the embodiment of the utility model is: a cold punching and cutting punching die of the utility model forms a cutting space for a workpiece through a main cutting groove, and forms a cutting space for another workpiece in the accommodating space between the main cutting groove and the positioning plate, so that the upper die and the lower die form a cutting and punching die, and two workpieces can be punched out by closing the dies once, and there is no need to reserve overlapping edges on the product blanks, and the product blanks can be punched directly and continuously. The overlapping edges existing in the traditional blanking and punching die process are punched out as workpieces, which greatly improves the material utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of layout of a trapezoidal workpiece with a missing corner in the prior art using a traditional blanking punching die process;

[0018] Figure 2 It is a schematic diagram of a lower die of a cold punching and cutting punching die of the utility model;

[0019] Figure 3 is a schematic diagram of the concave die;

[0020] Figure 4 It is a schematic diagram of an upper die of a cold punching and cutting punching die of the utility model;

[0021] Figure 5 It is a cross-sectional view of a cold punching and cutting punching die of the utility model;

[0022] Figure 6 It is a schematic diagram of the first die closing and punching of a cold punching and cutting punching die of the utility model;

[0023] Figure 7 It is a schematic diagram of the second die closing and punching of a cold punching and cutting punching die of the utility model;

[0024] Figure 8 The utility model discloses a process layout schematic diagram of a cold punching and cutting punching die for processing a corner-less trapezoidal workpiece.

[0025] In the figure: 1. lower mold; 101. lower concave mold; 102. positioning support plate; 103. main cutting groove; 104. first cutting angle groove; 105. second cutting angle groove; 106. lower mold pad; 107. lower mold base; 108. positioning pin; 109. lower limiter; 110. guide column; 2. upper mold; 201. upper pressure plate; 202. main cutting punch; 203. first cutting angle punch; 204. second cutting angle punch; 205. upper mold base; 206. upper mold pad; 207. guide block; 208. upper limiter; 209. guide sleeve; 210. elastic member; 211. mold handle; 100. product blank; 200. workpiece; 300 / 400. redundant top angle. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model clearer, the following will further describe the implementation of the utility model in conjunction with the accompanying drawings. The following is a preferred embodiment of the utility model among multiple possible embodiments, which is intended to provide a basic understanding of the utility model, but is not intended to confirm the key or decisive elements of the utility model or limit the scope of protection.

[0027] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0028] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0029] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in the subsequent drawings. At the same time, it should be understood that for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0030] It should be further explained that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0031] Please refer to Figure 2-8 The embodiment of the utility model provides a cold punching and cutting punching die, which is used for processing a corner-missing trapezoidal workpiece 200. In this embodiment, it is used for processing a column reinforcement plate on a photovoltaic panel, and the reinforcement plate is approximately a right-angled trapezoid without a right angle. The cold punching and cutting punching die mainly includes a lower die 1 and an upper die 2.

[0032] like Figure 2 and 3 As shown, the lower mold 1 includes a lower die 101 and a positioning plate 102 . The lower die 101 is provided with a main cutting groove 103 , a first corner cutting groove 104 and a second corner cutting groove 105 which are arranged through the lower die 101 . The positioning plate 102 is arranged on the upper surface of the lower die 101 .

[0033] The cross-sectional shape of the main cutting groove 103 is the same as the cross-sectional shape of the workpiece 200 , so that the main cutting groove 103 can be embedded in the workpiece 200 , and the product blank 100 can be punched at the main cutting groove 103 to form a workpiece 200 .

[0034] The first corner cutting groove 104 and the second corner cutting groove 105 are respectively located on both sides of the positioning support plate 102, and an accommodating space is enclosed by the positioning support plate 102, the main cutting groove 103, the first corner cutting groove 104 and the second corner cutting groove 105. The cross-sectional shape of the accommodating space is the same as the cross-sectional shape of the workpiece 200, and the accommodating space can accommodate a workpiece 200.

[0035] The lower mold 1 is generally fixedly arranged on a workbench, and the lower mold 1 also includes a lower mold pad 106 and a lower mold base 107. The lower mold base 107 is fixed on the lower mold pad 106, the lower die 101 is fixed on the lower mold base 107, and the lower mold pad 106 is fixedly installed on the workbench.

[0036] like Figure 4 and 5 As shown, the upper mold 2 includes an upper pressing plate 201, and a main cutting punch 202, a first corner cutting punch 203 and a second corner cutting punch 204 arranged on the lower surface of the upper pressing plate 201. When the upper mold 2 and the lower mold 1 are closed, the main cutting punch 202 is inserted into the main cutting groove 103, the first corner cutting punch 203 is inserted into the first corner cutting groove 104, and the second corner cutting punch 204 is inserted into the second corner cutting groove 105, so that the main cutting groove 103 is cut into one of the workpieces 200, and the accommodating space is cut into another workpiece 200.

[0037] It should be noted that the shape of the main cutting punch 202 is compatible with the shape of the main cutting groove 103 and is flexibly set according to the shape of the workpiece 200 to be processed. For example, in this embodiment, the main cutting punch 202 is flat and its cross-sectional shape is exactly the same as that of the workpiece 200.

[0038] Furthermore, the shape of the first corner cutting punch 203 is adapted to the shape of the first corner cutting groove 104, and the shape of the second corner cutting punch 204 is adapted to the shape of the second corner cutting groove 105, which are flexibly set according to the shape of the top angle of the corner of the workpiece 200 to be processed. In this embodiment, the first corner cutting groove 104 and the second corner cutting groove 105 are both rectangular grooves, and the side of the first corner cutting groove 104 close to the main cutting groove 103 is aligned with the side of the positioning support plate 102 close to the main cutting groove 103, and the second corner cutting groove 105 is inclined. The first corner cutting punch 203 and the second corner cutting punch 204 are both rectangular blocks.

[0039] In addition, in order to ensure that the first corner cutting punch 203 and the second corner cutting punch 204 accurately cut off the redundant top corners when the product blank 100 is cut into the workpiece 200, the first corner cutting punch 203 and the second corner cutting punch 204 are both rectangular blocks, and the lower surface of the rectangular block is a Z-shaped slope. In this way, the redundant top corners on the product blank 100 will be cut off only after the first corner cutting punch 203 enters the first corner cutting groove 104 and the second corner cutting punch 204 enters the second corner cutting groove 105, avoiding obstruction of the first corner cutting punch 203 and the second corner cutting punch 204 from descending during the cutting process.

[0040] The upper mold 2 is generally arranged above the lower mold 1 and driven to move vertically by a driving mechanism. In some embodiments, the upper mold 2 also includes an upper mold base 205, and the upper pressing plate 201 can be vertically slidably installed on the upper mold base 205, and an elastic member 210 is provided between the upper pressing plate 201 and the upper mold base 205, and the elastic member 210 is generally a spring. The lower surface of the upper mold base 205 is provided with two guide blocks 207 arranged opposite to each other, and the two guide blocks 207 are respectively inserted into the two ends of the upper pressing plate 201, and the upper pressing plate 201 can slide vertically along the two guide blocks 207.

[0041] The upper mold 2 further includes a mold handle 211 and an upper mold pad 206. The upper mold base 205 is mounted on the upper mold pad 206. The mold handle 211 is vertically arranged and connected to the back of the upper mold base 205, and is vertically connected to the upper mold pad 206. The mold handle 211 is used to connect the driving mechanism. Under the drive of the driving mechanism, the upper mold 2 moves vertically downward to close the mold with the lower mold 1, or the upper mold 2 moves vertically upward to open the mold with the lower mold 1.

[0042] In some embodiments, in order to ensure that the upper mold 2 and the lower mold 1 are accurately molded together, the lower surface of the upper mold base 205 is provided with a guide sleeve 209 and an upper limiter 208, and the upper surface of the lower mold base 107 is provided with a guide column 110 and a lower limiter 109. When the upper mold 2 and the lower mold 1 are molded together, the guide column 110 is inserted into the guide sleeve 209, and the lower limiter 109 and the upper limiter 208 are docked.

[0043] In some embodiments, in order to accurately convey the product blank 100 to the punching position, the lower mold 1 further includes a plurality of positioning pins 108, each of which is fixed on the lower concave mold 101 and arranged in a straight line perpendicular to the positioning plate 102. When conveying the product blank 100 (sheet material), the left side thereof is pressed against the positioning pins 108 and the front side is pressed against the positioning plate 102, so that the product blank 100 can be accurately conveyed to the punching position.

[0044] The process of the cold punching and cutting punching die for processing the corner-cutting trapezoidal workpiece 200 is as follows:

[0045] First, the product blank 100 is conveyed to the lower concave die 101, so that the left side of the product blank 100 is close to the positioning pin 108, and the front side is close to the positioning support plate 102;

[0046] Afterwards, if Figure 6As shown, the upper mold 2 is driven to move vertically downward to close the mold with the lower mold 1, the main cutting punch 202 is inserted into the main cutting groove 103, and the main cutting punch 202 cuts the part of the product blank 100 located above the main cutting groove 103 into one of the workpieces 200, and at the same time, the first cutting angle punch 203 is inserted into the first cutting angle groove 104, and the second cutting angle punch 204 is inserted into the second cutting angle groove 105, and the part of the product blank 100 located in front of the main cutting groove 103 is cut off, and the second cutting angle punch 204 cuts off the redundant top angle 300 of the cut part to form another of the workpieces 200;

[0047] Then, the upper mold 2 is driven to move vertically upward to open the mold with the lower mold 1, and the product blank 100 is continuously conveyed forward along the positioning pin 108, so that the front side of the product blank 100 is close to the positioning support plate 102;

[0048] Finally, if Figure 7 As shown, the upper mold 2 is driven to move vertically downward again to close the mold with the lower mold 1, and the main cutting punch 202 cuts the part of the product blank 100 located above the main cutting groove 103 into a workpiece 200. At the same time, the first cutting punch 203 is inserted into the first cutting groove 104, and the second cutting punch 204 is inserted into the second cutting groove 105. The part of the product blank 100 located in front of the main cutting groove 103 is cut off, and the first cutting punch 203 cuts off an excess vertex 400 of the cut-off part to form another workpiece 200, and the second cutting punch 204 cuts off another excess vertex 300 of the cut-off part to form another workpiece 200; repeating this process can continuously perform the punching processing of the corner-cut trapezoidal workpiece 200.

[0049] Thus, the product blank 100 can be made as follows: Figure 8 The cutting and punching process layout scheme shown is used for punching, and there is no need to reserve overlap on the product blank 100. The product blank 100 can be punched directly and continuously. The overlap part existing in the traditional blanking and punching die process is punched into the workpiece 200, which greatly improves the material utilization rate of the product blank 100.

[0050] In this article, the directional words such as front, back, top, and bottom involved are defined by the positions of the parts in the drawings and the positions of the parts relative to each other, just for the sake of clarity and convenience in expressing the technical solution. It should be understood that they are relative concepts and can change accordingly according to different ways of use and placement, and the use of the directional words should not limit the scope of protection claimed in this application.

[0051] In the absence of conflict, the above embodiments and features in the embodiments can be combined with each other. The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A cold punching and cutting punching die for processing corner-cutting trapezoidal workpieces, characterized in that: include: A lower mold, comprising a lower concave mold and a positioning plate, wherein the lower concave mold is provided with a main cutting groove, a first cutting angle groove and a second cutting angle groove which are arranged through the lower concave mold, the positioning plate is arranged on the upper surface of the lower concave mold, the first cutting angle groove and the second cutting angle groove are respectively located on both sides of the positioning plate, and an accommodation space is formed between the positioning plate, the main cutting groove, the first cutting angle groove and the second cutting angle groove, the main cutting groove can be embedded in a workpiece, and the accommodation space can accommodate a workpiece; The upper mold includes an upper pressing plate, and a main cutting punch, a first corner cutting punch and a second corner cutting punch arranged on the lower surface of the upper pressing plate. When the upper mold and the lower mold are closed, the main cutting punch is inserted into the main cutting groove, the first corner cutting punch is inserted into the first corner cutting groove, and the second corner cutting punch is inserted into the second corner cutting groove, so that one workpiece is cut in the main cutting groove and another workpiece is cut in the accommodating space.

2. A cold punching and cutting punching die according to claim 1, characterized in that: The first corner cutting groove and the second corner cutting groove are both rectangular grooves, a side of the first corner cutting groove close to the main cutting groove is aligned with a side of the positioning support plate close to the main cutting groove, and the second corner cutting groove is arranged obliquely.

3. A cold punching and cutting punching die as claimed in claim 2, characterized in that: The first corner cutting punch and the second corner cutting punch are both rectangular blocks, and the lower surface of the rectangular block is a Z-shaped slope surface.

4. A cold punching and cutting punching die according to claim 1, characterized in that: The main cutting punch is in the shape of a flat plate.

5. A cold punching and cutting punching die as claimed in claim 1, characterized in that: The lower mold also includes a plurality of positioning pins, each of which is arranged in a straight line perpendicular to the positioning plate.

6. A cold punching and cutting punching die as claimed in claim 1, characterized in that: The upper mold also includes an upper mold base, the upper pressing plate can be vertically slidably installed on the upper mold base, and an elastic member is provided between the upper pressing plate and the upper mold base.

7. A cold punching and cutting punching die as claimed in claim 6, characterized in that: The lower surface of the upper die seat is provided with two guide blocks which are arranged opposite to each other. The two guide blocks are respectively inserted into the two ends of the upper pressing plate. The upper pressing plate can slide vertically along the two guide blocks.

8. A cold punching and cutting punching die as claimed in claim 6 or 7, characterized in that: The upper mold also includes a mold handle, and the mold handle is connected to the back side of the upper mold base.

9. A cold punching and cutting punching die as claimed in claim 6 or 7, characterized in that: The lower die also includes a lower die pad and a lower die seat, the lower die seat is fixed on the lower die pad, and the lower concave die is fixed on the lower die seat.

10. A cold punching and cutting punching die according to claim 9, characterized in that: The lower surface of the upper die base is provided with a guide sleeve and an upper limit stopper, and the upper surface of the lower die base is provided with a guide column and a lower limit stopper. When the upper die and the lower die are closed, the guide column is inserted into the guide sleeve, and the lower limit stopper is butted against the upper limit stopper.

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