Die head assembly and stamping device

Abstract

The utility model provides a die head assembly and a stamping device. The die head assembly comprises an installation base, two oppositely-arranged folded plate assemblies arranged on the installation base, a connecting rod assembly hinged between the folded plate assemblies on the two sides and a stamping plate hinged between the folded plate assemblies on the two sides. The folding plate assembly comprises an upper plate body and a lower plate body which are hinged to each other, the upper plate body is hinged to the mounting seat, and the lower plate body is hinged to the stamping plate; the connecting rod assembly comprises an upper connecting rod detachably connected between the upper plate bodies on the two sides and a lower connecting rod detachably connected between the lower plate bodies on the two sides, and the lower plate bodies and the stamping plate form a bent part used for stamping a stamped part. According to the die head assembly, the upper plate body is hinged to the lower plate body, the upper plate body is hinged to the mounting base, and the lower plate body is hinged to the stamping plate, so that the angle of the bent part can be changed by replacing the upper connecting rod and the lower connecting rod with different lengths, and the universality of the die head assembly can be improved; and different bending requirements can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping equipment, in particular to a die head component; meanwhile, the utility model also relates to a stamping device provided with the die head component. Background Art

[0002] Fuel cells require sheet metal brackets for fixing parts. These brackets need to be bent and punched by stamping devices during the manufacturing process. However, in actual applications, fuel cell manufacturers do not have a large demand for brackets. If suppliers are commissioned to use traditional stamping dies with complex structures to process brackets, not only will the delivery cycle be long, but the production cost will also be high. Therefore, how to optimize the stamping device to facilitate small-batch homemade production is particularly important for fuel cell manufacturers.

[0003] As an important component of the stamping device, the die assembly needs to be determined according to the shape and specifications of the forming. For example, when forming a bending structure on the stamped part, it is necessary to set a bending part on the punch of the die assembly and set a bending groove on the punch mating part. The shape and specifications of the bending groove are compatible with the bending part. By clamping the stamped part between the bending part and the groove wall of the bending groove, the bending structure can be formed on the stamped part. However, since the specifications of the bending part are fixed, the versatility of the die assembly is poor. When it is necessary to form a bending structure with different angles, different dies need to be replaced, which leads to a high cost of stamping. Utility Model Content

[0004] In view of this, the utility model aims to provide a die head assembly to facilitate adjustment of the angle of the bending portion, thereby having better versatility.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A die head assembly comprises a mounting seat, a folding plate assembly arranged on two opposite sides of the mounting seat, a connecting rod assembly hinged between the folding plate assemblies on both sides, and a stamping plate hinged between the folding plate assemblies on both sides; the folding plate assembly comprises an upper plate body and a lower plate body hingedly connected, the upper plate body is hingedly connected to the mounting seat, and the lower plate body is hingedly connected to the stamping plate;

[0007] The connecting rod assembly comprises an upper connecting rod detachably connected between the upper plates at both sides, and a lower connecting rod detachably connected between the lower plates at both sides. The lower plates and the stamping plates constitute a bending part for stamping a stamped part.

[0008] Furthermore, the mounting seat includes a first seat body and a second seat body detachably connected to the first seat body; the folding plate assembly is hinged to the second seat body.

[0009] Furthermore, a push plate is slidably provided on the stamping plate, a first elastic portion is sandwiched between the push plate and the stamping plate, and the push plate has a first position where it is pushed by the first elastic portion and protrudes out of the stamping plate, and a second position where it is squeezed and slides into the stamping plate.

[0010] Furthermore, the stamping plate is provided with punching holes.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] The die assembly of the utility model is connected by hinges of the upper plate and the lower plate, the upper plate and the mounting seat, and the lower plate and the stamping plate. The angle of the bending part can be changed by replacing the upper connecting rod and the lower connecting rod of different lengths, thereby improving the versatility of the die assembly and meeting different bending requirements. The coordination of the folding plate assembly and the connecting rod assembly can improve the structural stability of the bending part, so that the bending part is not easily deformed during the stamping process, thereby improving the bending effect of the stamped part.

[0013] In addition, another object of the present invention is to provide a punching device, comprising a base, the die assembly as described above, a driving part, and a matching part;

[0014] The base is provided with a bearing surface for bearing the stamped part; the die head assembly is located above the stamped part, and the driving part is used to drive the mounting seat to rise and fall; the matching piece is rotatably arranged below the stamped part and located on the descending path of the bent part, the matching piece has a bending groove, and is detachably connected to the base;

[0015] A second elastic portion is connected between the mating piece and the base, the bending groove has an initial position for the bending portion to be embedded, and a molding position that is pressed down by the bending portion and rotated to a preset angle, and when the mating piece is rotated from the initial position to the molding position, the second elastic portion is stretched.

[0016] Furthermore, there are two matching pieces arranged opposite to each other, and the two matching pieces are respectively arranged in one-to-one correspondence with the two bending parts.

[0017] Furthermore, the base is provided with a limit block located on the bearing surface, and the limit block has a limit groove for limiting the movement of the end of the stamped part, so as to position the stamped part at a preset position on the bearing surface.

[0018] Furthermore, the base includes a main body portion and an end portion provided at at least one end of the main body portion, and the end portion is provided to be convex relative to the main body portion;

[0019] The bearing surface is formed by the top surface of the end portion, and a mounting cavity is provided at the junction of the main body portion and the end portion, and a notch is provided on one side of the mounting cavity;

[0020] The matching piece is rotatably disposed in the installation cavity, and under the action of the second elastic portion, the notch of the bending groove is disposed toward the notch.

[0021] Furthermore, a fixing seat is provided above the base, and the driving part includes a crank-connecting rod mechanism transmission-connected between the fixing seat and the mounting seat, and a hand wheel for manipulating the transmission of the crank-connecting rod mechanism.

[0022] Furthermore, the mounting seat is slidably disposed on the base, and a third elastic portion is disposed between the mounting seat and the base, and the third elastic portion is used to support the mounting seat at a preset position.

[0023] In the punching device described in the utility model, when the die head assembly descends, the bending part pushes the mating part to rotate, so that the punching part is clamped between the bending part and the groove wall of the bending groove, which is beneficial to the bending and forming of the punched part. The structure of the punching device is simple and easy to arrange and implement. By setting the die head assembly as above and the mating part detachably connected to the base, the angle of the bending part can be adjusted and the mating part that matches the bending part can be replaced, which is beneficial to improving the versatility of the punching device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0025] Figure 1 This is a schematic structural diagram of the die assembly described in Example 1 of the utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the mounting base described in Embodiment 1 of the utility model;

[0027] Figure 3 This is a schematic structural diagram of the first seat body described in Embodiment 1 of the present utility model;

[0028] Figure 4 It is a structural schematic diagram of the second seat body, the folding plate assembly and the connecting rod assembly according to the first embodiment of the utility model from one viewing angle;

[0029] Figure 5 It is a structural schematic diagram of the second seat body, the folding plate assembly and the connecting rod assembly described in the first embodiment of the utility model from another perspective;

[0030] Figure 6 This is a schematic structural diagram of the folding plate assembly and the connecting rod assembly according to the first embodiment of the present utility model;

[0031] Figure 7 It is a schematic structural diagram of the punching device according to the second embodiment of the present utility model at a first viewing angle;

[0032] Figure 8 It is a schematic structural diagram of the punching device according to the second embodiment of the present utility model at a second viewing angle;

[0033] Fig. 9 It is a schematic structural diagram of the punching device according to the second embodiment of the utility model at a third viewing angle;

[0034] Fig.10 for Fig. 9 AA direction section view;

[0035] Fig.11 This is a schematic structural diagram of the base described in Embodiment 2 of the present utility model at one viewing angle;

[0036] Fig.12 This is a schematic structural diagram of the base described in Embodiment 2 of the utility model from another viewing angle;

[0037] Fig.13 This is a schematic structural diagram of the matching component described in Example 2 of the utility model.

[0038] Description of reference numerals:

[0039] 1. Base; 2. Matching parts; 3. Mounting seat; 4. Folding plate assembly; 5. Limit block; 6. Fixed seat; 7. Crank connecting rod mechanism; 8. Hand wheel; 9. Connecting rod assembly;

[0040] 100, mounting cavity; 101, main body; 1011, punch; 102, end portion; 1021, connection block; 103, bottom plate; 104, limit plate; 105, guide column; 106, third elastic portion; 107, support column; 108, notch; 109, bearing surface;

[0041] 201, bending groove; 202, mounting frame; 203, second elastic portion; 204, pivot axis;

[0042] 301, first seat body; 3011, lower connecting seat; 3012, guide sleeve; 3013, mounting groove; 302, second seat body; 3021, connecting part; 303, plugging cover; 3031, elastic pad;

[0043] 400, bending part; 401, upper plate; 402, lower plate; 403, stamping plate; 4031, slide groove; 404, push plate; 4041, connecting column; 4042, first elastic part; 4043, limit head; 405, punching hole; 4051, protrusion;

[0044] 501, limit slot;

[0045] 601, upper connecting seat;

[0046] 701, crank; 702, connecting rod;

[0047] 801, rotating shaft; 802, handle;

[0048] 901, upper connecting rod; 902, lower connecting rod; 903, articulated seat. DETAILED DESCRIPTION

[0049] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0050] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0051] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection", and "connector" 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 mechanical connection or an electrical connection; it can be a direct connection, or it can be 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 the present invention can be understood in combination with specific circumstances.

[0052] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0053] Embodiment 1

[0054] The present embodiment relates to a die head assembly, comprising a mounting seat 3, two folding plate assemblies 4 arranged opposite to each other on the mounting seat 3, a connecting rod assembly 9 hinged between the folding plate assemblies 4 on both sides, and a stamping plate 403 hinged between the folding plate assemblies 4 on both sides. The folding plate assembly 4 comprises an upper plate body 401 and a lower plate body 402 which are hingedly connected, the upper plate body 401 is hingedly connected to the mounting seat 3, and the lower plate body 402 is hingedly connected to the stamping plate 403.

[0055] The connecting rod assembly 9 includes an upper connecting rod 901 detachably connected between upper plates 401 on both sides, and a lower connecting rod 902 detachably connected between lower plates 402 on both sides. The lower plates 402 and the stamping plates 403 constitute a bending portion 400 for stamping a stamped part.

[0056] The die assembly described in this embodiment is connected by hinges of the upper plate 401 and the lower plate 402, the upper plate 401 is connected by hinges to the mounting seat 3, and the lower plate 402 is connected by hinges to the stamping plate 403. The angle of the bending part 400 can be changed by replacing the upper connecting rod 901 and the lower connecting rod 902 of different lengths, thereby improving the versatility of the die assembly and meeting different bending requirements. The coordination of the folding plate assembly 4 and the connecting rod assembly 9 is conducive to improving the structural stability of the bending part 400, so that the bending part 400 is not easily deformed during the stamping process, thereby improving the bending effect of the stamped part.

[0057] like Figure 1 As shown in , the mounting seat 3 in this embodiment includes a first seat body 301, and a second seat body 302 detachably connected to the first seat body 301, and the folding plate assembly 4 is hinged on the second seat body 302. Here, the first seat body 301 and the second seat body 302 cooperate to form the mounting seat 3. In addition, the second seat body 302 is detachably mounted on the first seat body 301, which facilitates the adjustment, replacement and maintenance of the folding plate assembly 4 and the connecting rod assembly 9 after removal.

[0058] To facilitate the detachable installation of the second base body 302 on the first base body 301, as shown in FIG. Figures 1 to 3 As shown in the figure, a mounting groove 3013 extending along the width direction of the first base body 301 is provided on the first base body 301, the groove opening of the mounting groove 3013 is arranged downward, and one end of the mounting groove 3013 is arranged through one side of the first base body 301 so that the second base body 302 can be inserted into the mounting groove 3013 along the width direction of the first base body 301.

[0059] Preferably, the inner walls on both sides of the mounting groove 3013 are in a step-like shape, and the top of the second seat body 302 has a connecting portion 3021, and the shapes of the left and right sides of the connecting portion 3021 are adapted to the shape of the mounting groove 3013 and are also in a step-like shape. The step-like arrangement on both the connecting portion 3021 and the mounting groove 3013 can not only guide the second seat body 302 to slide into the mounting groove 3013, but also limit the movement of the second seat body 302 along the length direction of the first seat body 301. At the same time, the arrangement of the step-like inner wall on the mounting groove 3013 can also increase the contact area between the second seat body 302 and the first seat body 301, thereby facilitating the improvement of the pressure bearing capacity of the second seat body 302.

[0060] In this embodiment, a blocking cover 303 is detachably mounted on the side of the first seat body 301 to prevent the second seat body 302 inserted in the mounting groove 3013 from being disengaged from the mounting groove 3013. Specifically, both ends of the blocking cover 303 are detachably mounted on the first seat body 301 by screwing with the first seat body 301 through bolts passing through the blocking cover 303. In order to further improve the use effect of the blocking cover 303, an elastic pad 3031 extending along the length direction of the blocking cover 303 is further provided on the side of the blocking cover 303 facing the second seat body 302. The elastic pad 3031 is sandwiched between the second seat body 302 and the blocking cover 303, which is conducive to improving the limiting effect of the blocking cover 303 on the second seat body 302.

[0061] The structures of the mounting groove 3013, the plug cover 303 and the elastic pad 3031 are simple and easy to arrange and implement, so as to facilitate the installation and removal of the second base body 302 on the first base body 301. Of course, the second base body 302 can also be detachably connected to the first base body 301 using other structures, which can be determined according to the actual needs during the specific implementation.

[0062] Continue to combine Figure 1 , Figure 4 and Figure 5 As shown in the figure, the second base body 302 in this embodiment is arranged to extend out of the bottom of the first base body 301. The top ends of the two upper plates 401 are respectively hingedly connected to the bottom of the second base body 302. Specifically, a first protruding block is respectively provided at the middle of the top end of each upper plate 401, and a first groove for inserting each first protruding block is respectively provided on the left and right sides of the extended portion. The hinge shaft passes through the extended portion and the first protruding block, and the top end of the upper plate 401 is hingedly connected to the second base body 302.

[0063] In addition, a second convex block is provided at the middle of the top of each lower plate body 402, and a second groove is provided at the bottom of the upper plate body 401 for each second convex block to be inserted. The hinge shaft passes through the bottom end of the upper plate body 401 and the second convex block, and the top of the lower plate body 402 is hinged to the bottom end of the upper plate body 401. A third convex block is provided at the middle of both ends of the stamping plate 403, and a third groove is provided at the bottom of each lower plate body 402 for the corresponding third convex block to be inserted. The hinge shaft passes through the bottom end of each lower plate body 402 and the corresponding third convex block, so that the stamping plate 403 is hingedly connected to the two lower plate bodies 402. Among them, the hinge between the upper plate body 401 and the lower plate body 402, and the hinge between the lower plate body 402 and the stamping plate 403 are all smoothly transitioned to meet the use requirements.

[0064] As a preferred arrangement, Figure 4 As shown in , the upper connecting rod 901 is connected between the middle parts of the two upper plates 401, and the lower connecting rod 902 is connected between the middle parts of the two lower plates 402. At this time, the matching stability of the upper connecting rod 901 and the lower connecting rod 902 is relatively high, which is conducive to improving the structural reliability of the bending part 400. In order to facilitate the installation of the upper connecting rod 901 and the lower connecting rod 902, a hinge seat 903 is provided on the inner side of each upper plate 401 and the lower plate 402, and the two ends of the upper connecting rod 901 and the lower connecting rod 902 are respectively hinged between the two upper plates 401 or the two lower plates 402 through the connecting pieces of their own ends and the corresponding hinge seats 903.

[0065] The upper plate 401, the lower plate 402 and the stamping plate 403 in this embodiment can all be made of high-speed steel, and the thickness can range from 8 to 10 mm. This is conducive to improving its own strength and having good wear resistance, thereby helping to extend the service life of the die assembly. The thickness in this embodiment can be, for example, 8 mm, 9 mm or 10 mm, etc., which can be determined according to the use requirements during specific implementation.

[0066] like Figure 4 As shown in , the bending portion 400 in this embodiment is triangular, and the angle of the bending portion 400 can be adjusted by changing the length of the upper connecting rod 901 and the lower connecting rod 902. Specifically, when the length of the upper connecting rod 901 and the lower connecting rod 902 increases, the lower plate body 402 is respectively turned outward with the bottom end as the center, thereby facilitating the increase of the angle of the bending portion 400. Conversely, when the length of the upper connecting rod 901 and the lower connecting rod 902 decreases, the lower plate body 402 is respectively turned inward with the bottom end as the center, thereby reducing the angle of the bending portion 400.

[0067] In specific operation, the upper connecting rod 901 and the lower connecting rod 902 can be removed by removing the connecting piece from the hinge seat 903, so that the two can be easily replaced. Specifically, the hinge seat 903 is provided with a mounting hole, and the connecting piece is arranged through the mounting hole. One end of the connecting piece is screwed to one end of the connecting rod, and the other end is connected to a limit nut. After the connecting piece passes through the mounting hole and is screwed to the end of the connecting rod, the connection between the connecting rod and the corresponding folding plate can be achieved. Here, the connecting rod connection method is simple and easy to install and remove.

[0068] As a preferred embodiment, a push plate 404 is slidably provided on the stamping plate 403, a first elastic portion 4042 is sandwiched between the push plate 404 and the stamping plate 403, and the push plate 404 has a first position where it is pushed by the first elastic portion 4042 and protrudes from the stamping plate 403, and a second position where it is pressed and slides into the stamping plate 403. Here, the cooperation between the first elastic portion 4042 and the push plate 404 facilitates the ejection of the stamped parts formed after stamping, thereby preventing the stamped parts from adhering to the bent portion 400.

[0069] In terms of specific structure, Figure 5 and Figure 6 As shown in the figure, the push plate 404 is slidably arranged in the middle of the stamping plate 403 and is located between the two punching holes 405. To facilitate the installation of the push plate 404 on the stamping plate 403, a protrusion 4051 with an upward convex arrangement is provided on the stamping plate 403, and a slide groove 4031 with an upward concave arrangement is provided on the stamping plate 403 corresponding to the protrusion 4051, and the notch of the slide groove 4031 is arranged downward.

[0070] The top of the push plate 404 is provided with a connecting column 4041 extending out of the protrusion 4051. A stopper 4043 capable of blocking the top of the protrusion 4051 is connected to the top of the connecting column 4041 to prevent the push plate 404 from slipping out of the slide groove 4031. The shape of the slide groove 4031 matches the shape of the push plate 404, and both are square, which helps prevent the push plate 404 from rotating relative to the bent portion 400, thereby improving the stability of the push plate 404.

[0071] The first elastic part 4042 in this embodiment includes a spring sleeved on the connecting column 4041 and abutting between the bottom of the slide groove 4031 and the top surface of the push plate 404. Since the push plate 404 is extended out of the stamping plate 403 in the initial state, when the push plate 404 abuts against the part to be stamped, it can slide into the slide groove 4031 and compress the first elastic part 4042. When the mounting seat 3 moves upward, the first elastic part 4042 can drive the push plate 404 to return to its original position and then extend out of the stamping plate 403, and can push the stamped part, so that the stamped part is separated from the stamping plate 403.

[0072] Furthermore, in this embodiment, a punching hole 405 is also provided on the stamping plate 403. The punching hole 405 can cooperate with the punch 1011 to form a punching hole on the stamped part. The position and number of the punching holes can be determined according to the use requirements.

[0073] The die assembly in this embodiment can adjust the angle of the bending portion 400 by replacing the upper connecting rod 901 and the lower connecting rod 902, which is beneficial to improving the flexibility and versatility of the die assembly, thereby helping to reduce production costs.

[0074] Embodiment 2

[0075] This embodiment relates to a stamping device. In terms of overall structure, the stamping device includes a base 1, the die head assembly described in the first embodiment, a driving part, and a matching part 2.

[0076] The base 1 is provided with a bearing surface 109 for bearing the stamped part, the die assembly is located above the stamped part, and the driving part is used to drive the mounting seat 3 to rise and fall. The matching piece 2 is rotatably arranged below the stamped part and is located on the descending path of the bending part 400. The matching piece 2 has a bending groove 201 and is detachably connected to the base 1.

[0077] A second elastic portion 203 is connected between the fitting 2 and the base 1. The bending groove 201 has an initial position for the bending portion 400 to be embedded, and a forming position that is pressed down by the bending portion 400 and rotated to a preset angle. When the fitting 2 is rotated from the initial position to the forming position, the second elastic portion 203 is stretched.

[0078] In the punching device described in this embodiment, when the die assembly descends, the bending portion 400 pushes the mating piece 2 to rotate, so that the punching piece is sandwiched between the bending portion 400 and the wall of the bending groove 201, which is conducive to the bending and forming of the punched piece. The structure of the punching device is simple and easy to arrange and implement. By setting the die assembly as above and the mating piece 2 detachably connected to the base 1, the mating piece 2 that matches the bending portion 400 can be replaced by adjusting the angle of the bending portion 400, which is conducive to improving the versatility of the punching device. Figures 7 to 9 As shown in the figure, the base 1 serves as the bearing body of the entire punching device. Preferably, the base 1 includes a main body 101 and an end portion 102 provided at at least one end of the main body 101, and the end portion 102 is convexly arranged relative to the main body 101. The bearing surface 109 is formed by the top surface of the end portion 102. A mounting cavity 100 and a notch 108 provided at one side of the mounting cavity 100 are provided at the junction of the main body 101 and the end portion 102. The fitting 2 is provided in the mounting cavity 100. Under the action of the second elastic portion 203, the notch of the bending groove 201 is arranged toward the notch 108.

[0079] In terms of specific structure, both ends of the base 1 are provided with end parts 102, and due to the arrangement of the main part 101 and the end part 102, the base 1 is in a "U" shape, and the above-mentioned guide columns 105 are respectively arranged on the protruding parts. This is conducive to forming a space for the bending part 400 to pass through, and the structure is simple, easy to process and shape, and has a good bearing effect. In addition, the stamping device also includes a bottom plate 103, and the base 1 is specifically arranged on the bottom plate 103. In order to facilitate the connection between the main part 101 of the base 1 and the bottom plate 103, the two ends of the main part 101 extend outward to form connection blocks 1021, and the base 1 is specifically fixed on the bottom plate 103 by connecting with the bottom plate 103 through a fast connecting piece.

[0080] In this embodiment, the two bearing surfaces 109 are arranged opposite to each other, which is beneficial to supporting the two ends of the workpiece to be stamped, and is beneficial to improving the supporting effect of the workpiece to be stamped. In this embodiment, the mounting cavity 100, the matching piece 2 and the second elastic portion 203 are all arranged opposite to each other. The bending parts 400 are formed at the two ends of the workpiece to be stamped.

[0081] In order to improve the positioning effect of the stamped part on the bearing surface 109, as Fig.11 and Fig.12 As shown in , the base 1 is provided with a limit block 5 located on the bearing surface 109, and the limit block 5 has a limit groove 501 for limiting the movement of the end of the stamped part, and the stamped part is positioned at a preset position on the bearing surface 109. The limit groove 501 on the limit block 5 limits the displacement of the stamped part, which is beneficial to improving the positioning effect of the stamped part on the base 1, thereby improving the precision of stamping and improving the stamping qualification rate.

[0082] In terms of specific structure, due to the setting of the limiting groove 501, each limiting block 5 is "U"-shaped, and the two ends of the stamped part are limited in the limiting groove 501 of the corresponding limiting block 5, and the inner wall of the limiting groove 501 abuts against the stamped part, so that the movement of the stamped part along the length direction and the width direction of the base 1 can be limited. Here, only the limiting block 5 can achieve a good limiting effect, which is conducive to layout and implementation, and has a good limiting effect. At the same time, the "U"-shaped limiting block 5 also has the advantage of being conducive to processing and forming.

[0083] In order to improve the flexibility of the limit block 5 in use, by replacing different limit blocks 5, two limit blocks 5 can be used to position the parts to be stamped with different lengths and widths. The limit block 5 in this embodiment can be detachably installed on the top of the end portion 102. For example, the four corners of the limit block 5 are screwed to the end portion 102 by bolts passing through the limit block 5. In addition, in order to improve the connection stability of the limit block 5 on the end portion 102, the area of ​​the limit block 5 should be as large as possible.

[0084] As a preferred embodiment, Figure 7 and Fig.11 and Fig.13 As shown in FIG. 1 , the mating member 2 in this embodiment is a column rotatably arranged in the mounting cavity 100, and the bending groove 201 is arranged to extend along the axial direction of the mating member 2. Here, the cross section of the bending groove 201 may be Fig.13 The fan-shaped shape shown in the figure may also be other geometric shapes as long as the use requirements are met. In the initial state, the notch of the bending groove 201 is exposed through the notch 108. It is understood that the specification of the notch 108 should meet the requirement that the notch of the bending groove 201 is completely exposed to ensure the stamping effect.

[0085] In order to improve the stability of the mating piece 2 during rotation, the cross section of the installation cavity 100 is in the shape of an arc coaxially arranged with the mating piece 2. In the process of the mating piece 2 rotating around its own axis, the inner wall of the installation cavity 100 abuts against the outer peripheral wall of the mating piece 2, thereby improving the stability of the mating piece 2 during rotation. Figure 7 As shown in the figure, in this embodiment, there are two matching pieces 2 arranged opposite to each other, and the two matching pieces 2 are respectively arranged in one-to-one correspondence with the two bending portions 400. Such an arrangement can bend and form both ends of the part to be stamped at the same time, thereby facilitating the improvement of stamping efficiency. Of course, the scheme of only setting one matching piece 2 is also feasible.

[0086] In addition, in this embodiment, both ends of the mounting cavity 100 are set through the base 1. In order to facilitate the detachable installation of the matching part 2 on the base 1, a triangular mounting frame 202 is provided at one end corresponding to the mounting cavity 100. The two mounting points at the bottom of the mounting frame 202 are detachably mounted on the base 1 by bolts, and the mounting point at the top of the mounting frame 202 is used for the rotating shaft 801 at the end of the matching part 2 to pass through. By setting the triangular mounting frame 202, it has the advantages of high structural stability and easy processing and molding. Corresponding to the other end of the two mounting cavities 100, a limit plate 104 is detachably installed on the base 1. The limit plate 104 is rectangular, and the two ends are detachably connected between the end part 102 and the main part 101 by bolts. The rotating shaft 801 at the other end of the matching part 2 is rotatably set on the limit plate 104.

[0087] In this embodiment, when the mating part 2 needs to be replaced, the limiting plate 104 can be disassembled. Such a configuration not only facilitates the replacement and maintenance of the mating part 2, but also facilitates the replacement of mating parts 2 of different structures according to the forming requirements of the parts to be stamped, thereby improving the flexibility of use of the stamping device.

[0088] like Figure 2As shown in , the second elastic part 203 is a second spring, which is arranged corresponding to one side of the mounting frame 202, and one end of the second spring is connected to the top of the pivot shaft 204 of the mating piece 2, and the other end is connected to the end portion 102. The second elastic part 203 in the initial position is arranged horizontally, and when the die assembly clamps the part to be stamped in the bending groove 201, the mating piece 2 is driven to rotate to the forming position and the second elastic part 203 is stretched. In addition, the second elastic part 203 is conducive to the mating piece 2 returning to the initial position, thereby facilitating the reuse of the stamping device, and further facilitating the improvement of the stamping efficiency.

[0089] As a preferred implementation, the mounting seat 3 in this embodiment is slidably disposed on the base 1, and a third elastic portion 106 is disposed between the mounting seat 3 and the base 1, and the third elastic portion 106 is used to support the mounting seat 3 at a preset position.

[0090] In terms of detailed structure, Figure 2 As shown in FIG, two guide posts 105 extending upward in the height direction are respectively provided at both ends of the base 1, through holes are respectively provided at both ends of the first base body 301 for the guide posts 105 to pass through, and guide sleeves 3012 are provided in each through hole, and the guide posts 105 are respectively inserted into the corresponding guide sleeves 3012. The first base body 301 can slide up and down on the base 1 in the height direction through the guiding cooperation of the guide posts 105 and the guide sleeves 3012.

[0091] The third elastic part 106 in this embodiment includes a spring which is respectively sleeved on each guide column 105 and is located between the first seat body 301 and the base 1. When the first seat body 301 moves downward under the external force, the third elastic part 106 is compressed. When the external force disappears, the third elastic part 106 drives the first seat body 301 to return to its original position. In addition, sleeved on the guide column 105, the third elastic part 106 is also conducive to improving the stability of the first elastic part 4042 when it is extended and retracted.

[0092] In order to further improve the stamping effect of the part to be stamped, in this embodiment, the base 1 is provided with a punch 1011 located below the stamping plate 403, and the bent portion 400 is provided with a punch hole 405 corresponding to the punch 1011. Through the cooperation of the punch 1011 and the punch hole 405, a punch hole can be formed on the part to be stamped, further meeting the use requirements of the part to be stamped, and the structure of the punch 1011 and the punch hole 405 is simple, which is easy to arrange and implement.

[0093] In terms of detailed structure, Figure 1 and Fig.10As shown in the figure, the punch 1011 in this embodiment is set at the top of the main body 101, and two punches 405 are arranged at intervals. The punches 405 are arranged in a one-to-one correspondence with the positions of the punches 1011, so as to facilitate the formation of two punching holes arranged at intervals on the workpiece to be punched. Of course, in specific implementation, the positions and quantities of the punches 1011 and the punches 405 can be adaptively adjusted according to the use requirements.

[0094] As a preferred embodiment, the punching device in this embodiment further includes a fixing seat 6 disposed above the base 1, and the driving part includes a crank connecting rod mechanism 7 that is transmission-connected between the fixing seat 6 and the mounting seat 3, and a hand wheel 8 for manipulating the transmission of the crank connecting rod mechanism 7. By turning the hand wheel 8, the mounting seat 3 can be driven to rise and fall through the crank connecting rod mechanism 7, which has the advantages of being convenient for arrangement and implementation, and being simple and easy to operate.

[0095] like Figure 7 and Figure 8 As shown in , the fixing seat 6 is specifically connected to the top of a plurality of guide pillars 105 to serve as a mounting carrier of the driving unit. In addition, a support pillar 107 is further connected between the fixing seat 6 and the bottom plate 103 to further improve the mounting stability of the fixing seat 6. An upper connecting seat 601 is provided at the top of the fixing seat 6, and a rotating shaft 801 on the hand wheel 8 is rotatably disposed on the upper connecting seat 601.

[0096] In order to facilitate the operation of the hand wheel 8, a columnar handle 802 is also provided on the hand wheel 8. A lower connecting seat 3011 is provided on the top of the first seat body 301, and the crank connecting rod mechanism 7 includes a crank 701 fixedly connected to the rotating shaft 801 at the top end, and a connecting rod 702 hingedly connected to the lower connecting seat 3011 at the bottom end, and the top end of the connecting rod 702 is hingedly connected to the bottom end of the crank 701.

[0097] In addition, to facilitate the arrangement of the crank-connecting rod mechanism 7, an escape hole for the crank 701 and the connecting rod to move freely is provided on the fixing seat 6. Of course, during the specific implementation, the driving part can also adopt a driving cylinder, etc., as long as the use requirements are met.

[0098] When the punching device of this embodiment is used, the plate-shaped part to be punched is first placed on the bearing surface 109 and constrained in the limiting grooves 501 of the two limiting blocks 5. Then the handle 802 is manually rotated and the crank 701 is driven to rotate counterclockwise, so that the bottom end of the crank 701 rotates downward and pushes the mounting seat 3 through the swing of the connecting rod, so that the mounting seat 3 slides downward and compresses the third elastic portion 106. The bending portion 400 clamps the part to be punched between the bending portion 400 and the inner wall of the bending groove 201. At this time, the two matching pieces 2 rotate symmetrically and drive the part to be punched to turn over and punch holes 405. At this time, the push plate 404 is completely accommodated in the groove body on the punching plate 403. Then the handle 802 is rotated in the opposite direction, and the mounting seat 3 slides upward and returns. The push plate 404 extends out of the punching plate 403 under the action of the first elastic portion 4042 and pushes the punched part. At the same time, the matching piece 2 rotates in the opposite direction and resets under the pull of the second elastic portion 203.

[0099] The punching device in this embodiment can realize the production of small batches of simple structure brackets, which is conducive to avoiding the phenomenon of high unit cost due to small quantity. When the punched parts can be used in fuel cells, it can also help reduce the production cost of fuel cells. In addition, using the punching device to make simple brackets by yourself is also conducive to avoiding the investment in stamping molds, shortening the delivery cycle, and reducing the waste of production resources. At the same time, the punching device can realize the on-demand adjustment of the punching angle, which is conducive to improving the flexibility of the use of the punching device, thereby reducing the number of mold openings and reducing production costs.

[0100] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A die head assembly, characterized in that: It comprises a mounting seat (3), two folding plate assemblies (4) arranged opposite to each other on the mounting seat (3), a connecting rod assembly (9) hinged between the folding plate assemblies (4) on both sides, and a stamping plate (403) hinged between the folding plate assemblies (4) on both sides; The folding plate assembly (4) comprises an upper plate body (401) and a lower plate body (402) which are hingedly connected, the upper plate body (401) is hingedly connected to the mounting seat (3), and the lower plate body (402) is hingedly connected to the stamping plate (403); The connecting rod assembly (9) comprises an upper connecting rod (901) detachably connected between the upper plate bodies (401) on both sides, and a lower connecting rod (902) detachably connected between the lower plate bodies (402) on both sides, and the lower plate bodies (402) and the stamping plate (403) constitute a bending part (400) for stamping a stamped part.

2. The die assembly according to claim 1, characterized in that: The mounting seat (3) comprises a first seat body (301) and a second seat body (302) detachably connected to the first seat body (301); The folding plate assembly (4) is hinged to the second seat body (302).

3. The die assembly according to claim 1, characterized in that: A push plate (404) is slidably provided on the stamping plate (403), a first elastic portion (4042) is sandwiched between the push plate (404) and the stamping plate (403), and the push plate (404) has a first position where it is pushed by the first elastic portion (4042) and protrudes from the stamping plate (403), and a second position where it is squeezed and slides into the stamping plate (403).

4. The die assembly according to any one of claims 1 to 3, characterized in that: The punching plate (403) is provided with a punching hole (405).

5. A punching device, characterized in that: It comprises a base (1), a die assembly according to any one of claims 1 to 4, a driving part, and a matching part (2); The base (1) is provided with a bearing surface (109) for bearing the stamped part; The die head assembly is located above the punched part, and the driving part is used to drive the mounting seat (3) to rise and fall; The matching piece (2) is rotatably disposed below the punched piece and is located on the descending path of the bent portion (400); the matching piece (2) has a bending groove (201) and is detachably connected to the base (1); A second elastic portion (203) is connected between the mating piece (2) and the base (1); the bending groove (201) has an initial position for the bending portion (400) to be embedded, and a molding position that is pressed down by the bending portion (400) and rotated to a preset angle; when the mating piece (2) is rotated from the initial position to the molding position, the second elastic portion (203) is stretched.

6. The punching device according to claim 5, characterized in that: The two matching pieces (2) are arranged opposite to each other, and the two matching pieces (2) and the two bent portions (400) are arranged in a one-to-one correspondence.

7. The punching device according to claim 5, characterized in that: The base (1) is provided with a limit block (5) located on the bearing surface (109), and the limit block (5) has a limit groove (501) for limiting the movement of the end of the stamped part, thereby positioning the stamped part at a preset position on the bearing surface (109).

8. The punching device according to claim 5, characterized in that: The base (1) comprises a main body portion (101), and an end portion (102) provided at at least one end of the main body portion (101), and the end portion (102) is provided in a convex manner relative to the main body portion (101); The bearing surface (109) is formed by the top surface of the end portion (102); a mounting cavity (100) is provided at the junction of the main body portion (101) and the end portion (102), and a notch (108) is provided on one side of the mounting cavity (100); The matching piece (2) is rotatably disposed in the installation cavity (100), and under the action of the second elastic portion (203), the notch of the bending groove (201) is arranged toward the notch (108).

9. The punching device according to claim 5, characterized in that: A fixing seat (6) is provided above the base (1), and the driving unit comprises a crank connecting rod mechanism (7) drivingly connected between the fixing seat (6) and the mounting seat (3), and a hand wheel (8) for operating the transmission of the crank connecting rod mechanism (7).

10. The punching device according to claim 5, characterized in that: The mounting seat (3) is slidably arranged on the base (1), and a third elastic portion (106) is arranged between the mounting seat (3) and the base (1), and the third elastic portion (106) is used to support the mounting seat (3) at a preset position.

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