Punching die for multi-hole-site collaborative forming

Abstract

The multi-hole-site collaborative forming stamping die comprises a die body, a first forming device and a second forming device, the die body is divided into an upper die body and a lower die body, and the upper die body and the lower die body are matched to form a cavity for containing a product; the first forming device is installed on the lower die body and matched with the upper die body, and the second forming device is installed on the die body. The edge turning and tearing device has the beneficial effects that the two forming devices are arranged, in the mold closing process, the first forming device operates under the driving action of the upper mold body, and then edge turning and tearing treatment is conducted on the side position of a product at the same time; and the second forming device is driven by the mold closing force to perform hole flanging treatment on the product, so that various forming procedures such as flanging, tearing and hole flanging on the product can be realized in a one-time punching process, and the working efficiency is further greatly improved.

Description

Technical Field

[0001] This application relates to the technical field of stamping dies, and particularly to a stamping die for collaborative forming of multiple holes. Background Art

[0002] As Figure 1 shown, it is a schematic diagram of an automotive part product. Multiple hole grooves A at the top of the product need to be flanged, and flanging needs to be performed at positions B on both sides of the product. Multiple tear openings C also need to be provided on the side of the product, and all these need to be processed by a stamping die. In the prior art, the forming processes of these parts are separate and independent, thus greatly reducing the working efficiency. For this reason, a stamping die for collaborative forming of multiple holes is proposed to solve the above technical problems. Summary of the Invention

[0003] One object of this application is to provide a stamping die for collaborative forming of multiple holes.

[0004] To achieve the above object, the technical solution adopted in this application is: A stamping die for collaborative forming of multiple holes, including a die body, a first forming device, and a second forming device. The die body is divided into an upper die body and a lower die body, and the upper die body and the lower die body cooperate to form a cavity for placing the product. The first forming device is installed on the lower die body and cooperates with the upper die body. The second forming device is installed on the die body. During stamping, the first forming device is adapted to flange and tear the product under the drive of the upper die body, and the second forming device is adapted to flange the product under the drive of the clamping force.

[0005] Preferably, a plurality of wedge blocks are installed at the bottom end of the upper die body. The first forming device includes a plurality of forming blocks, and the forming blocks are elastically and horizontally slidably installed in the lower die body. During stamping, the forming blocks are adapted to horizontally move towards the product under the wedge extrusion cooperation of the wedge blocks to achieve flanging and tearing of the product.

[0006] 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.

[0007] Preferably, the lower die body includes a lower template and a lower die base. The lower die body is elastically and vertically slidably installed at the top end of the lower die base. The second forming device includes a plurality of lower forming parts, and the lower forming parts are vertically installed on the lower die base and extend into the lower template. During stamping, the lower template is adapted to move downward under the drive of the upper die body, so that the product is flanged on the horizontal plane under the action of the lower forming parts.

[0008] Preferably, the upper die body includes an upper template and an upper die base, and the upper template is elastically and vertically slidably mounted at the bottom end of the upper die base; the second forming device further includes a plurality of upper forming cylinders, the upper forming cylinders are vertically mounted on the upper die base and extend into the upper template, and the upper forming cylinders are correspondingly matched with the lower forming parts; during stamping, the upper template is adapted to move downward until it abuts against the lower template, and then the upper forming cylinders are adapted to move downward under the drive of the upper die base until they abut against the upper surface of the product.

[0009] Preferably, the lower die body includes a lower template and a lower die base, and the lower die body is elastically and vertically slidably mounted at the top end of the lower die base; the second forming device includes a plurality of lower forming parts, and the lower forming parts are inclined and slidably mounted in the lower template; during stamping, the lower template and the lower forming parts are adapted to move downward synchronously under the drive of the upper die body, and until the lower forming parts are inclined and moved upward in the direction of the product under the extrusion and cooperation of the lower die base, so as to realize flanging of the inclined surface of the product.

[0010] Preferably, the lower forming part is adapted to be connected to the lower template through an elastic member; during mold opening, the lower forming part is adapted to be separated from the product under the action of elastic force.

[0011] Preferably, the upper die body includes an upper template and an upper die base, and the upper template is elastically and vertically slidably mounted at the bottom end of the upper die base; the second forming device further includes a plurality of upper forming cylinders, the upper forming cylinders are inclined and slidably mounted in the upper template and are correspondingly matched with the lower forming parts; during stamping, the upper template is adapted to move downward until it abuts against the lower template, and then the upper forming cylinders are adapted to be kept in contact with the upper surface of the product under the extrusion and cooperation of the upper die base.

[0012] Preferably, the upper forming cylinder is connected to the upper template through an elastic member; during mold opening, the upper forming cylinder is adapted to contract into the upper template under the action of elastic force.

[0013] Preferably, the lower forming part includes a slider and a forming column, and the forming column is mounted on the slider; during stamping, the forming column is adapted to perform flanging on the inclined surface of the product, and at this time, the forming column is flush with the flange after the product is flanged.

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

[0015] The present invention is provided with two forming devices. During the mold closing process, the first forming device operates under the driving action of the upper mold body, and thus performs flanging and tearing operations on the side position of the product simultaneously; while the second forming device performs a hole flanging operation on the product under the driving action of the mold closing force. In this way, during a single stamping process, multiple forming processes such as flanging, tearing, and hole flanging of the product can be achieved, thereby greatly improving the working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural view of the product of the present invention.

[0017] Figure 2 It is a schematic structural view of the overall stamping die of the present invention.

[0018] Figure 3 It is a schematic partial structural view of the lower mold body of the present invention.

[0019] Figure 4 It is a schematic structural view of the first forming device of the present invention.

[0020] Figure 5 It is a schematic working principle view of the first forming device of the present invention.

[0021] Figure 6 It is a schematic specific structural view of the inclined guide groove and the inclined guide post of the present invention.

[0022] Figure 7 It is a schematic overall sectional structural view of the stamping die of the present invention.

[0023] Figure 8 It is a schematic enlarged structural view of part D of the present invention.

[0024] Figure 9 It is a schematic sectional structural view of the upper mold body of the present invention.

[0025] Figure 10 It is a schematic specific view of the upper forming cylinder in the upper mold body of the present invention.

[0026] Figure 11 It is a schematic sectional structural view of the lower mold body of the present invention.

[0027] Figure 12 It is a schematic specific view of the lower forming part in the lower mold body of the present invention.

[0028] In the figure: 1. Upper mold body; 101. Upper mold base; 102. Upper template; 2. Lower mold body; 201. Lower mold base; 202. Lower template; 3. First forming device; 301. Forming block; 4. Wedge-shaped block; 5. Inclined guide groove; 6. Inclined guide block; 7. Second forming device; 701. Upper forming cylinder; 702. Lower forming part; 7021. Slide block; 7022. Forming column; 8. Elastic member. Specific Embodiments

[0029] The following further describes the present application in combination with specific embodiments. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined to form new embodiments.

[0030] In the description of the present application, it should be noted that for orientation terms, if there are terms such as "center", "transverse", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation and positional relationship are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application 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 should not be construed as limiting the specific protection scope of the present application.

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

[0032] One preferred embodiment of the present application is, as Figures 1 to 12 shown, a stamping die for co-formed multi-hole positions, including a (stamping) die body, a first forming device 3, and a second forming device 7. Of course, the die body is divided into an upper die body 1 and a lower die body 2, and the upper die body 1 and the lower die body 2 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, and the second forming device 7 is installed on the die body.

[0033] It can be understood that during the die closing and stamping, that is, when the upper die body 1 moves downward towards the lower die body 2, at this time, the first forming device 3 operates under the driving action of the upper die body 1, and then simultaneously performs flanging and slitting on the side position of the product. At the same time, the second forming device 7 performs a punching operation on the product under the driving action of the die closing force. In this way, in one stamping process, multiple forming processes such as flanging, slitting, and punching of the product can be realized, thereby greatly improving the working efficiency.

[0034] As a further description of the above embodiment: As Figure 3 shown, the first forming device 3 includes a plurality of forming blocks 301, and the forming blocks 301 can be horizontally slidably installed in the lower die body 2 through (nitrogen) springs; of course, a plurality of wedge blocks 4 are installed at the bottom end position of the upper die body 1, and the wedge blocks 4 and the forming blocks 301 are correspondingly matched.

[0035] Since the structures of multiple forming blocks 301 are similar and their working principles are the same, one of the forming blocks 301 is taken as an example for illustration in this application. As shown in Figure 5 , in the initial state (i.e., when the mold is not closed), the forming block 301 is in a separated state from the product under the action of elastic force. During stamping, as shown in Figure 5 , the upper die body 1 drives the wedge block 4 to move downward. The wedge surface of the wedge block 4 will contact and squeeze the forming block 301, thereby causing the forming block 301 to move horizontally towards the product. In this way, the forming block 301 can perform flanging and tearing operations on the product, as shown in Figure 4 . It should be noted that flanging means squeezing and bending the side of the product through the corresponding forming block 301; and tearing is to generate a tear on the side of the product through the tear punch on the corresponding forming block 301.

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

[0037] It should be noted that the reason for adopting the wedge extrusion cooperation method above is that this is a stamping die, and the mold closing speed of the die is relatively fast. Therefore, through the wedge extrusion cooperation method, the forming block 301 can be driven to move more smoothly and quickly.

[0038] Based on the above embodiments, in this embodiment, as shown in Figure 6 , 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 surface of the wedge block 4 contacts the forming block 301, the inclined guide block 6 just enters the inclined guide groove 5 at this time, that is, the two form a sliding fit. Of course, in order to make the inclined guide block 6 enter the inclined guide groove 5 more smoothly, as shown in Figure 6 , the inlet diameter at the top of the inclined guide groove 5 can be larger than that of the inclined guide block 6. In this way, the inclined guide block 6 will be easier to enter the inclined guide groove 5 and will not cause jamming.

[0039] It should be noted that when the forming block 301 moves towards the product, the wedge block 4 mainly plays a leading role. The settings of 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 move more stably.

[0041] Second, when the mold is opened, the cooperation between the inclined guide groove 5 and the inclined guide block 6 enables the forming block 301 to move and separate from the product. Without the inclined guide groove 5 and the inclined guide block 6, the resetting at this time is completely carried out by the elastic force of the (nitrogen) spring. That is to say, at this time, the elastic force of the spring also needs to overcome the adhesion force between the forming block 301 and the product, so a spring with a larger strength model is required. After the inclined guide groove 5 and the inclined guide block 6 are provided, the separation force between the forming block 301 and the product can be completely completed by the cooperation of the inclined guide groove 5 and the inclined guide block 6, so only a spring with a smaller strength model needs to be used, thereby reducing costs.

[0042] Third, without the inclined guide groove 5 and the inclined guide block 6, the spring needs to act on the forming block 301 to force it to separate from the product. When the adhesion force between the forming block 301 and the product is too large, the strength of the spring will decrease after long-term use, and then the situation of non-separation may occur. Another situation is that although it can be separated, the separation process has "hysteresis". That is to say, after the upper die body 1 and the lower die body 2 are completely opened, at this time, the forming block 301 moves and resets under the elastic force, which will cause a large impact force when the forming block 301 resets, thereby affecting the service life of the forming block 301 and the stability of the sliding installation of the forming block 301.

[0043] The structure of the second forming device 7 in this application is not specifically limited. The following provides two embodiments for reference:

[0044] Embodiment 1 (not shown): This structure is mainly for the hole groove A on the horizontal plane of the product.

[0045] The lower die body 2 includes a lower template 202 and a lower die base 201. The lower die body 2 can be vertically and elastically slidably installed at the top of the lower die base 201 through a nitrogen spring. The second forming device 7 includes a plurality of lower forming parts 702, and the lower forming parts 702 are vertically installed on the lower die base 201 and extend into the lower template 202.

[0046] It can be understood that before stamping, there is a certain interval between the lower template 202 and the lower die base 201 under the action of the nitrogen spring. During stamping, the upper die body 1 will move down and first contact the lower template 202; when the upper die body 1 continues to move down, the lower template 202 will move down accordingly and compress the nitrogen spring, and then the product in the lower template 202 will move down and cooperate with the lower forming parts 702, that is, the lower forming parts 702 perform a hole flanging on the horizontal plane of the product.

[0047] Further, the upper die body 1 includes an upper template 102 and an upper die base 101. The upper template 102 is vertically and elastically slidably mounted at the bottom end of the upper die base 101 through a nitrogen spring. The second forming device 7 further includes a plurality of upper forming cylinders 701. The upper forming cylinders 701 are vertically mounted on the upper die base 101 and extend into the upper template 102, and the upper forming cylinders 701 are correspondingly matched with the lower forming members 702.

[0048] It can be understood that during stamping, the upper template 102 moves downward and first comes into contact with the lower template 202. Then, when the upper die body 1 continues to move downward, at this time, the upper die base 101 will continue to move downward relative to the upper template 102, so that the upper forming cylinders 701 move downward and abut against the upper surface position of the product. The upper forming cylinders 701 and the lower forming members 702 are correspondingly matched. That is to say, the upper forming cylinders 701 abut against the top position of the hole groove A that needs to be flanged. In this way, at the upper and lower positions of the hole groove A: the upper part is limited by the upper forming cylinders 701 at the hole groove A, and the lower part is flanged by the lower forming members 702 at the hole groove A. It can achieve the following effects: limit and fix the upper part of the product at the hole groove A, so that the upper part of the product will not be deformed during flanging, and at the same time, the surrounding parts of the hole groove A can be evenly extruded, thereby avoiding possible deformation or damage of the hole groove A during the flanging process, and thus greatly improving the product quality.

[0049] It should be known that during mold opening, at this time, the upper template 102 and the lower template 202 will move back to their original positions under the action of the nitrogen spring, and then separate from the product, without interfering with the subsequent demolding of the product.

[0050] Embodiment 2 (as Figures 7 to 12 shown): This structure is mainly aimed at the hole groove A located on the inclined surface of the product.

[0051] As Figure 11 and Figure 12 shown, the lower die body 2 includes a lower template 202 and a lower die base 201. The lower die body 2 is vertically and elastically slidably mounted at the top end of the lower die base 201 through a nitrogen spring. The second forming device 7 includes a plurality of lower forming members 702. The lower forming members 702 are inclined and slidably mounted in the lower template 202.

[0052] It can be understood that during stamping, the upper die body 1 moves downward and abuts against the lower template 202. Subsequently, when the upper die body 1 continues to move downward, the lower template 202 will drive the lower forming members 702 to move downward synchronously and compress the nitrogen spring. When the lower forming members 702 move downward and contact the lower die base 201, the lower forming members 702 will tilt upward in the direction of the product under the reaction force of the lower die base 201, thereby realizing flanging of the inclined surface of the product.

[0053] Further, in order to enable the lower forming part 702 to automatically separate from the product after mold opening, the lower forming part 702 and the lower template 202 can be connected by an elastic member 8 (such as a spring or a nitrogen spring). It can be understood that when the lower forming part 702 tilts upward to turn over the hole, the spring is in a compressed state at this time; and after mold opening, that is, when the lower forming part 702 loses the extrusion effect of the lower mold base 201, the lower forming part 702 will tilt downward and move back to its original position and retract into the lower template 202 under the action of the elastic force, and then automatically separate from the product to prepare for the subsequent removal of the product. Of course, the mating surfaces of the lower mold base 201 and the lower forming part 702 are also preferably of a wedge-shaped structure, so that the tilting movement of the lower forming part 702 can be more smooth when the two are mated, and at the same time, the stability of the lower forming part 702 during hole turning is ensured.

[0054] In this embodiment, as Figure 9 and Figure 10 shown, the upper die body 1 includes an upper template 102 and an upper die base 101. The upper template 102 is vertically slidably mounted on the bottom end of the upper die base 101 by a nitrogen spring; the second forming device 7 further includes a plurality of upper forming cylinders 701, and the upper forming cylinders 701 are inclined and slidably mounted in the upper template 102 and are correspondingly mated with the lower forming part 702.

[0055] It can be understood that during stamping, the upper template 102 will move downward synchronously with the upper die base 101 under the action of the nitrogen spring. When the upper template 102 and the lower template 202 are in abutting cooperation, the lower template 202 can be regarded as stationary at this time, and the upper die base 101 will continue to move downward relative to the upper template 102. Subsequently, the upper forming cylinder 701 is limited under the extrusion cooperation of the upper die base 101, so that the upper forming cylinder 701 maintains an abutting state with the upper surface of the product. It should be noted that the upper forming cylinder 701 here has the same effect as that in the first embodiment, that is, to improve the hole turning quality of the product.

[0056] Further, in order to enable the upper forming cylinder 701 to automatically separate from the product after mold opening, as Figure 10 shown, the upper forming cylinder 701 can be connected to the upper template 102 by an elastic member 8 (such as a spring). It can be understood that during mold closing, the spring will be in a compressed state when the upper forming cylinder 701 tilts downward; and during mold opening, that is, when the upper forming cylinder 701 loses the extrusion effect of the upper die base 101, the upper forming cylinder 701 will tilt upward and move back to its original position and retract into the upper template 102 under the action of the elastic force, and then automatically separate from the product to prepare for the subsequent removal of the product. Of course, as Figure 10 shown, the mating surfaces of the upper die base 101 and the upper forming cylinder 701 are also preferably of a wedge-shaped structure, so that the tilting movement of the upper forming cylinder 701 can be more smooth when the two are mated.

[0057] In this embodiment, as Figure 12 shown, the lower forming member 702 includes a slider 7021 and a forming post 7022. The forming post 7022 is installed at the top position of the slider 7021. It should be noted that the slider 7021 is used to tilt and slide the lower forming member 702, and the forming post 7022 is used for flanging. It can be understood that during stamping, that is, when the forming post 7022 flanges the inclined surface of the product, and at this time, the forming post 7022 is flush with the flange after the product is flanged, as Figure 8 shown.

[0058] That is to say, the forming post 7022 just passes through the hole groove A during forming to flange it, so that not too much of the forming post 7022 passes through the hole groove A after flanging. In this way, during the later demolding process, that is, the separation and cooperation stroke between the forming post 7022 and the hole groove A can be considered to be the smallest, thereby reducing the friction force between the forming post 7022 and the hole groove A, enabling the forming post 7022 to more smoothly disengage from the hole groove A, and avoiding product damage or deformation problems caused by excessive friction force. In addition, this design also helps to improve production efficiency, because the quick disengagement of the forming post 7022 can shorten the demolding time, thus accelerating the entire production process.

[0059] It should be noted that the top part of the forming post 7022 can also be designed to have a certain taper shape, which can better guide the material deformation during stamping, making the flanging process smoother and further improving the flanging quality. At the same time, the taper design also helps the forming post 7022 to more easily slide out of the hole groove A during demolding, further reducing the demolding difficulty.

[0060] The working principle of the present invention is:

[0061] First, place product A horizontally in the lower die body 2. Then, the upper die body 1 moves downward for die closing until the upper template 102 abuts against the lower template 202. During the die closing process, the upper die body 1 drives the wedge block 4 to move downward, and the wedge surface of the wedge block 4 will contact and squeeze the forming block 301, so that the forming block 301 moves in the horizontal direction of the product. In this way, the forming block 301 can perform flanging and slitting operations on the product. Of course, at the same time, in the lower die body 2: the lower template 202 drives the lower forming part 702 to move downward synchronously and squeeze the nitrogen spring. When the lower forming part 702 moves downward and contacts the lower die base 201, the lower forming part 702 will tilt upward in the direction of the product under the reaction force of the lower die base 201, so as to realize flanging of the inclined surface of the product; in the upper die body 1: the upper die base 101 will continue to move downward relative to the upper template 102, and then the upper die base 101 will squeeze the upper forming cylinder 701, so that the upper forming cylinder 701 tilts downward and abuts against the upper surface of the flanged hole of the product; as Figure 8 shown, that is, the lower forming part 702 and the upper forming cylinder 701 move relatively and obliquely close to each other for flanging, and the axes of the two are on the same straight line.

[0062] After die opening, that is, the upper die body 1 moves upward and separates from the lower die body 2, and the two lose their mutual acting force. At this time, the upper template 102 and the lower template 202 move and reset under the action of the nitrogen spring respectively. Of course, the lower forming part 702 and the upper forming cylinder 701 also move and reset under the elastic force of the spring, so that the product in the lower die body 2 is in the free state at the initial placement. Then, take out the processed product by the manipulator, and then put in the product to be processed.

[0063] The above describes the basic principle, main features and advantages of this application. Those skilled in the art should understand that this application is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of this application. Without departing from the spirit and scope of this application, this application will have various changes and improvements, and these changes and improvements all fall within the scope of this application claimed. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A stamping die for multi-hole cooperative forming, characterized in that: include: A mold body, wherein the mold body is divided into an upper mold body and a lower mold body, and the upper mold body and the lower mold body cooperate to form a cavity for placing the product; A first molding device, which is mounted on the lower mold body and cooperates with the upper mold body; as well as The second molding device is installed on the mold body; when stamping, the first molding device is suitable for flanging and tearing the product under the drive of the upper mold body, and the second molding device is suitable for flanging the product under the drive of the clamping force.

2. The multi-hole cooperative forming stamping die according to claim 1, characterized in that: A plurality of wedge blocks are installed at the bottom end of the upper mold body, and the first forming device includes a plurality of forming blocks, which are elastically and horizontally slidably installed in the lower mold body; when stamping, the forming blocks are suitable for horizontally moving toward the product under the wedge-shaped extrusion cooperation of the wedge blocks to achieve flanging and tearing of the product.

3. The multi-hole cooperative forming stamping die according to claim 2, characterized in that: The wedge block is provided with inclined guide blocks on both sides, and the forming block is provided with inclined guide grooves on both sides; when stamping, the inclined guide grooves and the inclined guide blocks form a sliding fit.

4. The multi-hole cooperative forming stamping die according to any one of claims 1 to 3, characterized in that: The lower mold body includes a lower mold plate 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 molding device includes a plurality of lower molding pieces, and the lower molding pieces are vertically mounted on the lower mold base and extend into the lower mold plate; During stamping, the lower mold plate is adapted to move downwards under the drive of the upper mold body, so that the product is punched horizontally under the action of the lower forming part.

5. The multi-hole cooperative forming stamping die according to claim 4, characterized in that: The upper mold body includes an upper mold plate and an upper mold base, and the upper mold plate is elastically and vertically slidably installed at the bottom end of the upper mold base; the second molding device also includes a plurality of upper molding cylinders, which are vertically installed on the upper mold base and extend into the upper mold plate, and the upper molding cylinders are correspondingly matched with the lower molding piece; During stamping, the upper mold plate is adapted to move downward until it abuts against the lower mold plate, and then the upper forming cylinder is adapted to move downward under the drive of the upper mold base until it abuts against the upper surface of the product.

6. The multi-hole cooperative forming stamping die according to any one of claims 1 to 3, characterized in that: The lower mold body comprises a lower mold plate 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 molding device comprises a plurality of lower molding pieces, and the lower molding pieces are obliquely and slidably mounted in the lower mold plate; During stamping, the lower template and the lower molding part are adapted to move downward synchronously under the drive of the upper mold body, until the lower molding part moves upward obliquely toward the product under the extrusion fit of the lower mold base, so as to realize the punching of the inclined surface of the product.

7. The multi-hole cooperatively formed stamping die according to claim 6, characterized in that: The lower molding part is suitable for being connected to the lower mold plate through an elastic part; when the mold is opened, the lower molding part is suitable for being separated from the product under the action of elastic force.

8. The multi-hole cooperatively formed stamping die according to claim 6, characterized in that: The upper mold body includes an upper mold plate and an upper mold base, and the upper mold plate is elastically and vertically slidably installed at the bottom end of the upper mold base; the second molding device also includes a plurality of upper molding cylinders, and the upper molding cylinders are obliquely and slidably installed in the upper mold plate and correspondingly cooperate with the lower molding member; During stamping, the upper mold plate is adapted to move downward until it abuts against the lower mold plate, and then the upper forming cylinder is adapted to maintain an abutment state with the upper surface of the product under the extrusion fit of the upper mold base.

9. The multi-hole cooperatively formed stamping die according to claim 8, characterized in that: The upper forming tube is connected to the upper mold plate through an elastic member; when the mold is opened, the upper forming tube is suitable for shrinking in the upper mold plate under the action of elastic force.

10. The multi-hole cooperatively formed stamping die according to claim 9, characterized in that: The lower forming part includes a slider and a forming column, and the forming column is installed on the slider; when stamping, the forming column is suitable for punching holes on the inclined surface of the product, and at this time, the forming column is flush with the flange of the product after the hole is punched.

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