A bevel flanging assembly for a punch press

Abstract

This application discloses a beveled surface flanging assembly for a stamping die, comprising an upper die body, a lower die body, and a second forming device. The lower die body includes a lower template and a lower die base, and is elastically and vertically slidably mounted on the top of the lower die base. The second forming device includes multiple lower forming parts, which are obliquely and slidably mounted within the lower template. During stamping, the lower template and the lower forming parts are adapted to move synchronously downward under the drive of the upper die body until the forming parts are obliquely moved upward towards the product under the compression of the lower die base, thereby achieving flanging of the beveled surface of the product. The beneficial effects of this application are: by providing multiple lower forming parts, during die closing, the lower forming parts will obliquely move upward towards the product under the reaction force of the lower die base, thereby achieving flanging of the beveled surface of the product; thus, only the product needs to be placed horizontally within the stamping die, and multiple slots can be flanged simultaneously, greatly improving work efficiency.

Description

Technical Field

[0001] This application relates to the field of stamping die technology, and in particular to a beveled hole assembly for a stamping die. Background Technology

[0002] like Figure 1 The diagram shows a product schematic of an automotive part. Multiple slots A on the inclined surface at the top of the product require flanging. Existing flanging punches and lower dies are vertically aligned, necessitating the product to be tilted to make the inclined surface horizontal for flanging. This complicates the process and affects production efficiency. Therefore, a flanging component for a stamping die is proposed to solve the aforementioned technical problems. Utility Model Content

[0003] One of the objectives of this application is to provide a beveled hole assembly for a stamping die.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows: a beveled hole-flipping assembly for a stamping die, comprising an upper die body, a lower die body, and a second forming device. The lower die body includes a lower template and a lower die base, and the lower die body is elastically and vertically slidably mounted on the top of the lower die base. The second forming device includes a plurality of lower forming parts, and the lower forming parts are obliquely and slidably mounted inside the lower template. During stamping, the lower template and the lower forming parts are adapted to move synchronously downward under the drive of the upper die body, until the forming parts are obliquely and upward in the direction of the product under the extrusion of the lower die base, so as to realize the beveled hole of the product.

[0005] Preferably, the lower molding part is adapted to be connected to the lower template through an elastic element; during mold opening, the lower molding part is adapted to separate from the product under the action of elastic force.

[0006] Preferably, the lower forming part includes a slider and a forming post, the forming post being mounted on the slider; during stamping, the forming post is adapted to make a hole in the inclined surface of the product, and at this time the forming post is flush with the flange of the product after the hole is made.

[0007] Preferably, the top of the forming column has a tapered structure, so that the top of the forming column forms a clearance fit with the flange of the product.

[0008] Preferably, the mating surfaces of both the lower mold base and the lower forming part are wedge-shaped.

[0009] Preferably, the upper mold body includes an upper template and an upper mold base, the upper template being elastically and vertically slidably mounted on the bottom end of the upper mold base; the second forming device further includes a plurality of upper forming cylinders, the upper forming cylinders being obliquely and slidably mounted inside the upper template and correspondingly cooperating with the lower forming part; during stamping, the upper template is adapted to move downward until it abuts against the lower template, and then the upper forming cylinder is adapted to maintain abutment against the upper surface of the product under the extrusion cooperation of the upper mold base.

[0010] Preferably, the upper forming cylinder is connected to the upper template through an elastic element; during mold opening, the upper forming cylinder is adapted to retract into the upper template under the action of elastic force.

[0011] Preferably, the mating surfaces of the upper forming cylinder and the upper template are both wedge-shaped.

[0012] Preferably, the inclined face flanging assembly of the stamping die further includes a first forming device; a plurality of wedge blocks are installed at the bottom end of the upper die body, and the first forming device includes a plurality of forming blocks, which are elastically and horizontally slidably installed in the lower die body; during stamping, the forming blocks are adapted to move horizontally toward the product under the wedge extrusion of the wedge blocks to achieve flanging and tearing of the product.

[0013] Preferably, inclined guide blocks are installed on both sides of the wedge block, and inclined guide grooves are provided on both sides of the forming block; during stamping, the inclined guide grooves and the inclined guide blocks form a sliding fit.

[0014] Compared with the prior art, the beneficial effects of this application are as follows:

[0015] This invention features multiple lower forming parts. During mold closing, the lower forming parts tilt and move upwards towards the product under the reaction force of the lower mold base, thereby achieving the flipping of holes on the inclined surface of the product. This allows the product to be placed horizontally in the stamping die, and multiple holes can be flipped simultaneously, greatly improving work efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the product structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the overall structure of the stamping die of this utility model.

[0018] Figure 3 This is a partial structural diagram of the lower mold body of this utility model.

[0019] Figure 4 This is a schematic diagram of the first molding device of this utility model.

[0020] Figure 5 This is a schematic diagram illustrating the working principle of the first molding device of this utility model.

[0021] Figure 6 This is a schematic diagram of the specific structure of the inclined guide groove and inclined guide post of this utility model.

[0022] Figure 7 This is a schematic cross-sectional view of the stamping die of this utility model.

[0023] Figure 8 This is an enlarged structural diagram of point D of this utility model.

[0024] Figure 9 This is a cross-sectional view of the upper mold body of this utility model.

[0025] Figure 10 This is a detailed schematic diagram of the upper forming cylinder in the upper mold body of this utility model.

[0026] Figure 11 This is a cross-sectional view of the lower mold body of this utility model.

[0027] Figure 12 This is a schematic diagram of the lower molded part in the lower mold body of this utility model.

[0028] In the diagram: 1. Upper mold body; 101. Upper mold base; 102. Upper template; 2. Lower mold body; 201. Lower mold base; 202. Lower template; 3. First molding device; 301. Molding block; 4. Wedge block; 5. Inclined guide groove; 6. Inclined guide block; 7. Second molding device; 701. Upper molding cylinder; 702. Lower molding part; 7021. Slider; 7022. Molding column; 8. Elastic element. Detailed Implementation

[0029] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0030] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this application.

[0031] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0032] One preferred embodiment of this application, such as Figures 1 to 12 As shown, a beveled hole assembly for a stamping die includes a (stamping) die body, a first forming device 3, and a second forming device 7. The die body is divided into an upper die body 1 and a lower die body 2, which cooperate to form a cavity for placing the product. The first forming device 3 is installed on the lower die body 2 and cooperates with the upper die body 1. The second forming device 7 is installed on the die body.

[0033] Understandably, during the die-cutting process, as the upper die 1 moves downwards towards the lower die 2, the first forming device 3 operates under the drive of the upper die 1, simultaneously performing flanging and tearing treatment on the side of the product. Specifically, as follows... Figure 1 As shown, flanging is performed at position B on both sides of the product, forming a tear C on the side of the product. At the same time, the second forming device 7 performs hole forming on the product under the drive of the mold closing force. In this way, multiple forming processes such as flanging, tearing, and hole forming can be achieved in one stamping process, thereby greatly improving work efficiency.

[0034] As a further description of the above embodiments: such as Figure 3 As shown, the first molding device 3 includes multiple molding blocks 301, and the molding blocks 301 can be horizontally slidably installed in the lower mold body 2 by means of a (nitrogen) spring; of course, multiple wedge blocks 4 are installed at the bottom of the upper mold body 1, and the wedge blocks 4 and the molding blocks 301 are correspondingly matched.

[0035] Since the multiple molding blocks 301 have similar structures and working principles, this application will use one of the molding blocks 301 as an example for explanation. Figure 5 As shown in (a), in the initial state (i.e., when the mold is not closed), the forming block 301 is separated from the product under the action of elastic force. During stamping, as... Figure 5 As shown in (b), at this time, the upper mold body 1 drives the wedge block 4 to move downward, and the wedge-shaped surface of the wedge block 4 will contact and squeeze the forming block 301, thereby causing the forming block 301 to move in the horizontal direction of the product. In this way, the forming block 301 can perform flanging and tearing treatment on the product, such as... Figure 4 As shown. It should be understood that flanging is achieved by extruding and bending the side of the product through the corresponding forming block 301; while tearing is achieved by tearing punches on the corresponding forming block 301 to create a tear on the side of the product.

[0036] Furthermore, in order to reduce the frictional pressure between the wedge block 4 and the forming block 301 during compression, a matching wedge surface is also provided at the top of the forming block 301. In this way, when the wedge block 4 compresses the forming block 301, the forming block 301 can move horizontally more smoothly and stably.

[0037] It should be noted that the reason for using the wedge extrusion fit method mentioned above is because this is a stamping die, and the die closing speed is relatively fast. Therefore, the wedge extrusion fit method can drive the forming block 301 to move more smoothly and quickly.

[0038] Based on the above embodiments, in this embodiment, as follows: Figure 6 As shown, inclined guide blocks 6 can be installed on both sides of the wedge block 4, and inclined guide grooves 5 are provided on both sides of the forming block 301. It can be understood that during stamping, when the wedge-shaped surface of the wedge block 4 contacts the forming block 301, the inclined guide block 6 also enters the inclined guide groove 5, thus forming a sliding fit. Of course, to ensure the inclined guide block 6 can enter the inclined guide groove 5 more smoothly, as... Figure 6 As shown, the inlet diameter at the top of the inclined guide groove 5 can be larger than that of the inclined guide block 6, so that the inclined guide block 6 can enter the inclined guide groove 5 more easily and will not cause jamming.

[0039] It should be understood that when the forming block 301 moves toward the product, the wedge block 4 plays a dominant role, while the inclined guide groove 5 and the inclined guide block 6 have the following advantages:

[0040] First, the cooperation between the inclined guide groove 5 and the inclined guide block 6 has a certain guiding and limiting effect on the forming block 301, making it more stable when moving.

[0041] Second, during mold opening, the cooperation of the inclined guide groove 5 and the inclined guide block 6 allows the molding block 301 to move and separate from the product. Without the inclined guide groove 5 and the inclined guide block 6, the reset relies entirely on the elastic force of the (nitrogen) spring. This means the spring force must overcome the adhesive force between the molding block 301 and the product, requiring a stronger spring. With the inclined guide groove 5 and the inclined guide block 6, the separation force between the molding block 301 and the product can be entirely achieved through the cooperation of the inclined guide groove 5 and the inclined guide block 6, allowing the use of a smaller strength spring and thus reducing costs.

[0042] Third, without the inclined guide groove 5 and inclined guide block 6, the spring needs to act on the molding block 301 to forcibly separate it from the product. However, if the adhesive force between the molding block 301 and the product is too large, the spring strength will decrease after prolonged use, which may lead to failure to separate. Furthermore, although separation is possible, the separation process has a "lag." That is, after the upper mold body 1 and lower mold body 2 are fully opened, the molding block 301 moves and resets under the action of the spring force. This will cause a large impact force on the molding block 301 during reset, thus affecting the service life of the molding block 301 and the stability of its sliding installation.

[0043] This application does not specifically limit the structure of the second molding device 7, but the following embodiment is provided for reference:

[0044] like Figures 7 to 12 As shown: This structure is mainly for the slot A located on the inclined surface of the product.

[0045] like Figure 11 and Figure 12 As shown, the lower mold body 2 includes a lower template 202 and a lower mold base 201. The lower mold body 2 is vertically and slidably mounted on the top of the lower mold base 201 via a nitrogen spring. The second molding device 7 includes multiple lower molding parts 702, which are inclined and slidably mounted inside the lower template 202. The number of lower molding parts 702 corresponds to the number of slots A.

[0046] Understandably, during the stamping process, the upper die 1 will move down and abut against the lower die plate 202. Then, as the upper die 1 continues to move down, the lower die plate 202 will drive the lower forming part 702 to move down synchronously and squeeze the nitrogen spring. When the lower forming part 702 moves down and contacts the lower die base 201, the lower forming part 702 will tilt and move up towards the product under the reaction force of the lower die base 201, thereby realizing the flanging of the inclined surface of the product.

[0047] Furthermore, to ensure automatic separation between the lower molded part 702 and the product after mold opening, the lower molded part 702 and the lower template 202 can be connected by an elastic element 8 (such as a spring or nitrogen spring). Understandably, when the lower molded part 702 tilts upward to create a hole, the spring is compressed; after mold opening, when the lower molded part 702 loses the squeezing force of the lower mold base 201, it tilts downward under the elastic force to reset and retract into the lower template 202, thus automatically separating from the product and preparing for subsequent product removal. Ideally, the mating surfaces of the lower mold base 201 and the lower molded part 702 should also adopt a wedge-shaped structure. This ensures smoother tilting movement of the lower molded part 702 and guarantees its stability during hole creation.

[0048] In this embodiment, as Figure 9 and Figure 10 As shown, the upper mold body 1 includes an upper template 102 and an upper mold base 101. The upper template 102 is elastically and vertically slidably installed on the bottom end of the upper mold base 101 by a nitrogen spring. The second molding device 7 also includes a plurality of upper molding cylinders 701. The upper molding cylinders 701 are inclinedly and slidably installed in the upper template 102 and correspondingly cooperate with the lower molding part 702.

[0049] Understandably, during stamping, the upper die plate 102 moves downward synchronously with the upper die base 101 under the action of the nitrogen spring. When the upper die plate 102 and the lower die plate 202 are in contact, the lower die plate 202 can be considered stationary, while the upper die base 101 continues to move downward relative to the upper die plate 102. Subsequently, the upper forming cylinder 701 is limited by the compression of the upper die base 101, keeping the upper forming cylinder 701 in contact with the upper surface of the product. In other words, the upper forming cylinder 701 is in contact with the top of the slot A that needs to be perforated. Thus, at the upper and lower positions of the slot A: the upper forming cylinder 701 limits the slot A at the top, while the lower forming part 702 perforates the slot A at the bottom. It can achieve the following effect: limit and fix the upper part of the product at the hole A, so that the upper part of the product will not be deformed when the hole is turned, and the surrounding parts of the hole A can be evenly squeezed, thereby avoiding deformation or damage to the hole A during the turning process, thus greatly improving the product quality.

[0050] Furthermore, in order to ensure that the upper forming cylinder 701 can automatically detach from the product after mold opening, such as... Figure 10 As shown, the upper forming cylinder 701 can be connected to the upper mold plate 102 via an elastic element 8 (e.g., a spring). It is understood that during mold closing, the upper forming cylinder 701 tilts downwards, compressing the spring; while during mold opening, when the upper forming cylinder 701 loses the squeezing action of the upper mold base 101, it tilts and moves up and down under the elastic force to reset and retract into the upper mold plate 102, thus automatically separating from the product and preparing for subsequent product removal. Of course, as... Figure 10 As shown, the surfaces where the upper mold base 101 and the upper forming cylinder 701 mate are preferably wedge-shaped, so that the tilting movement of the upper forming cylinder 701 can be smoother when the two mate.

[0051] In this embodiment, as Figure 12As shown, the lower forming part 702 includes a slider 7021 and a forming post 7022. The forming post 7022 is installed at the top of the slider 7021. It should be understood that the slider 7021 is used for tilting and sliding the lower forming part 702, while the forming post 7022 is used for flanging. It can be understood that during stamping, when the forming post 7022 flangs the inclined surface of the product, and at this time the forming post 7022 is flush with the flange of the product after flanging, such as... Figure 8 As shown.

[0052] In other words, during molding, the forming pillar 7022 passes precisely through the groove A and is then turned inside out. This prevents excessive portion of the forming pillar 7022 from passing through the groove A after turning out. Consequently, during subsequent demolding, the disengagement stroke between the forming pillar 7022 and the groove A is minimized, reducing friction between them. This allows the forming pillar 7022 to disengage more smoothly from the groove A, preventing product damage or deformation caused by excessive friction. Furthermore, this design improves production efficiency because the rapid disengagement of the forming pillar 7022 shortens demolding time, thus accelerating the entire production process.

[0053] It is worth noting that the top part of the forming column 7022 can also be designed with a certain taper, which allows the forming column 7022 to form a clearance fit with the turning hole position of the product. This can better guide the material deformation during the stamping process, making the turning hole process smoother and further improving the turning hole quality. At the same time, the tapered design also helps the forming column 7022 to slide out of the hole groove A more easily during demolding, further reducing the demolding difficulty.

[0054] The working principle of this utility model is as follows:

[0055] First, product A is placed horizontally in the lower mold body 2. Then, the upper mold body 1 moves down to close the mold until the upper mold plate 102 and the lower mold plate 202 abut against each other. During the mold closing process, the upper mold body 1 drives the wedge block 4 to move down. The wedge surface of the wedge block 4 will contact and squeeze the forming block 301, thereby causing the forming block 301 to move in the horizontal direction of the product. In this way, the forming block 301 can perform flanging and tearing treatment on the product. Of course, at the same time, in the lower mold body 2: the lower template 202 will drive the lower forming part 702 to move down synchronously and squeeze the nitrogen spring. When the lower forming part 702 moves down and contacts the lower mold base 201, the lower forming part 702 will tilt and move up towards the product under the reaction force of the lower mold base 201, thereby realizing the flipping hole at the inclined surface of the product; in the upper mold body 1: the upper mold base 101 will continue to move down relative to the upper template 102, and then the upper mold base 101 will squeeze the upper forming cylinder 701, thereby causing the upper forming cylinder 701 to tilt and move down and abut against the upper surface of the flipping hole at the product; such as Figure 8 As shown, the lower forming part 702 and the upper forming cylinder 701 move closer to each other at an inclination to perform the flipping, and their axes are on the same straight line.

[0056] After mold opening, the upper mold body 1 moves upward and separates from the lower mold body 2, and the two lose their interaction force. At this time, the upper mold plate 102 and the lower mold plate 202 move and reset under the action of nitrogen springs. Of course, the lower forming part 702 and the upper forming cylinder 701 also move and reset under the action of spring force, thus allowing the product located in the lower mold body 2 to be in its initial free state. Then, the processed product is taken out by the robot arm, and then the product to be processed is put in.

[0057] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A beveled hole assembly for a stamping die, characterized in that, include: The system comprises an upper mold body, a lower mold body, and a second forming device. The lower mold body includes a lower template and a lower mold base, and the lower mold body is elastically and vertically slidably mounted on the top of the lower mold base. The second forming device includes a plurality of lower forming parts, and the lower forming parts are inclined and slidably mounted inside the lower template. During stamping, the lower die and the lower forming part are adapted to move down synchronously under the drive of the upper die body, until the forming part tilts and moves up towards the product under the extrusion of the lower die base, so as to realize the flanging of the inclined surface of the product.

2. The inclined face flanging assembly of the stamping die as described in claim 1, characterized in that: The lower molding part is adapted to be connected to the lower template through an elastic element; during mold opening, the lower molding part is adapted to separate from the product under the action of elastic force.

3. The inclined face flanging assembly of the stamping die as described in claim 2, characterized in that: The lower forming part includes a slider and a forming post, the forming post being mounted on the slider; during stamping, the forming post is adapted to make a hole in the inclined surface of the product, and at this time the forming post is flush with the flange of the product after the hole is made.

4. The inclined face flanging assembly of the stamping die as described in claim 3, characterized in that: The top of the molding column has a tapered structure so that the top of the molding column and the flange of the product form a clearance fit.

5. The inclined face flanging assembly of the stamping die as described in claim 1, characterized in that: The mating surfaces of both the lower mold base and the lower molded part are wedge-shaped.

6. The inclined face flanging assembly of the stamping die as described in any one of claims 1-5, characterized in that: The upper mold body includes an upper template and an upper mold base, the upper template being elastically and vertically slidably mounted on the bottom end of the upper mold base; the second forming device also includes a plurality of upper forming cylinders, the upper forming cylinders being obliquely and slidably mounted inside the upper template and correspondingly cooperating with the lower forming part; During stamping, the upper die is adapted to move downward until it abuts against the lower die, and then the upper forming cylinder is adapted to remain abutting against the upper surface of the product under the extrusion fit of the upper die holder.

7. The inclined face flanging assembly of the stamping die as described in claim 6, characterized in that: The upper forming cylinder is connected to the upper template through an elastic element; during mold opening, the upper forming cylinder is adapted to retract into the upper template under the action of elastic force.

8. The inclined face flanging assembly of the stamping die as described in claim 7, characterized in that: The mating surfaces of the upper forming cylinder and the upper template are both wedge-shaped.

9. The inclined face flanging assembly of the stamping die as described in claim 6, characterized in that: The inclined face flanging assembly of the stamping die also includes a first forming device; a plurality of wedge blocks are installed at the bottom end of the upper die body, and the first forming device includes a plurality of forming blocks, which are elastically and horizontally slidably installed in the lower die body; during stamping, the forming blocks are adapted to move horizontally toward the product under the wedge extrusion of the wedge blocks to achieve flanging and tearing of the product.

10. The inclined face flanging assembly of the stamping die as described in claim 9, characterized in that: Both sides of the wedge block are equipped with inclined guide blocks, and both sides of the forming block are provided with inclined guide grooves; during stamping, the inclined guide grooves and the inclined guide blocks form a sliding fit.

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