A stamping device, its upper die assembly, and a production process

Abstract

The present invention discloses a stamping device, an upper die assembly thereof, and a production process. Among them, the upper die assembly includes: an upper slide block, an upper backing plate, an upper die, and a nitrogen spring; the upper backing plate is fixedly connected between the upper slide block and the upper die; the upper backing plate is provided with a plurality of through holes penetrating up and down, and a plurality of nitrogen springs are respectively installed in the through holes and correspond to the positions of the pressure rods of the upper die one by one. In this solution, first, according to the positions of the pressure rods of the upper die, nitrogen springs are installed in the corresponding through holes of the upper backing plate so that the nitrogen springs and the pressure rods form a one-to-one corresponding cooperation mode, and then the upper backing plate is fixedly connected between the upper slide block and the upper die. In this way, through the alignment and extrusion cooperation between the nitrogen springs and the pressure rods, it helps to realize the upper air cushion function of the upper die, so as to facilitate the upper blank holding operation of the upper die. Moreover, this solution also has the characteristics of simple structure, low manufacturing cost, and easy modification.

Description

Technical Field

[0001] The present invention relates to the technical field of coordinated production of stamping equipment and upper blank-holding dies, and particularly relates to a stamping equipment, an upper die assembly thereof, and a production process. Background Art

[0002] For dies used for producing large outer panels, upper blank-holding operations are mostly adopted; among them, for upper blank-holding operations, stamping equipment with an upper air cushion must be used.

[0003] However, in stamping equipment, the existing upper air cushion has a complex structure, high manufacturing cost, and it is difficult to be applicable to different upper blank-holding dies, with poor versatility. Summary of the Invention

[0004] In view of this, the present invention provides an upper die assembly, which can help to realize the function of the upper air cushion of the upper die, so as to facilitate the upper blank-holding operation of the upper die, and this solution also has the characteristics of simple structure, low manufacturing cost, and easy modification.

[0005] The present invention provides a stamping equipment applying the above upper die assembly.

[0006] The present invention provides a production process of a stamping equipment applying the above upper die assembly.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] An upper die assembly, comprising: an upper slider, an upper backing plate, an upper die, and nitrogen springs;

[0009] The upper backing plate is fixedly connected between the upper slider and the upper die;

[0010] The upper backing plate is provided with a plurality of through holes penetrating up and down, and the plurality of nitrogen springs are respectively installed in the through holes and correspond to the positions of the blank-holding rods of the upper die one by one.

[0011] Preferably, the cover plate on the top of the upper backing plate is provided with the through holes, and the top ends of the through holes are counterbored holes;

[0012] The large-head ends at the tops of the nitrogen springs are matched with the counterbored holes, and the top surfaces of the nitrogen springs are flush with the top surface of the cover plate.

[0013] Preferably, the plurality of nitrogen springs are symmetrically distributed about the center of the upper backing plate.

[0014] Preferably, each of the through holes is respectively installed with a nitrogen spring.

[0015] Preferably, the plurality of through holes are symmetrically distributed about the center of the upper backing plate.

[0016] Preferably, the fixed connection structure between the upper slider and the upper backing plate includes:

[0017] A threaded hole formed at the bottom of the upper slider;

[0018] A connection hole formed at the top of the upper backing plate for screwing and mating with the threaded hole.

[0019] Preferably, the fixed connection structure between the upper backing plate and the upper die includes:

[0020] A positive T-shaped groove formed at the bottom of the upper backing plate;

[0021] An inverted T-shaped groove formed at the top of the upper die for clamping and mating with the positive T-shaped groove.

[0022] A stamping device includes: an upper die assembly, a lower die, and a lower moving workbench, and the upper die assembly is the upper die assembly as described above.

[0023] A production process of a stamping device includes: an installation method of the upper die assembly as described above; the installation method of the upper die assembly includes:

[0024] Install a nitrogen spring in the corresponding through hole of the upper backing plate;

[0025] Load the upper backing plate into the upper die assembly.

[0026] A production process of a stamping device includes: an installation method of the upper die assembly as described above; the installation method of the upper die assembly includes:

[0027] Fully install nitrogen springs in all the through holes of the upper backing plate;

[0028] Load the upper backing plate into the upper die assembly.

[0029] It can be seen from the above technical solutions that in the upper die assembly provided by the embodiments of the present invention, first, according to the position of the pressure bar of the upper die, nitrogen springs are installed in the corresponding through holes of the upper backing plate so that the nitrogen springs and the pressure bar form a one-to-one alignment and mating manner, and then the upper backing plate is fixedly connected between the upper slider and the upper die. In this way, through the alignment and extrusion cooperation between the nitrogen springs and the pressure bar, it helps to realize the upper air cushion function of the upper die, so as to facilitate the upper pressure feeding operation of the upper die, and this solution also has the characteristics of simple structure, low manufacturing cost, and easy modification.

[0030] The present invention also provides a stamping device. Since the above upper die assembly is adopted, it also has corresponding beneficial effects, which can be specifically referred to the previous description and will not be elaborated here.

[0031] The present invention also provides a production process for a stamping device. Since the above-mentioned upper die assembly is adopted, it accordingly has corresponding beneficial effects, which can be specifically referred to the previous description and will not be elaborated herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0033] Figure 1 It is a schematic structural diagram of the stamping device provided by the embodiment of the present invention;

[0034] Figure 2 It is an isometric view of the structure of the upper backing plate provided by the embodiment of the present invention;

[0035] Figure 3 It is a top view of the structure of the upper backing plate provided by the embodiment of the present invention;

[0036] Figure 4 It is a bottom view of the structure of the upper backing plate provided by the embodiment of the present invention;

[0037] Figure 5 It is a schematic diagram of the installation position of the nitrogen spring on the upper backing plate provided by the embodiment of the present invention;

[0038] Figure 6 It is a schematic structural diagram of the stamping device provided by another embodiment of the present invention.

[0039] Among them, 1 is the upper slider; 2 is the upper backing plate, 2.1 is the cover plate, 2.2 is the through hole, 2.3 is the connecting hole, 2.4 is the installation groove, 2.5 is the positive T-shaped groove, 2.6 is the square shallow groove, 2.7 is the square deep groove; 3 is the upper die, 3.1 is the pressure rod, 3.2 is the blank holder; 4 is the nitrogen spring; 5 is the lower die; 6 is the lower moving workbench. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0041] The upper die assembly provided by the embodiment of the present invention, as Figure 1 shown, includes: an upper slider 1, an upper backing plate 2, an upper die 3, and a nitrogen spring 4;

[0042] The upper pad 2 is fixedly connected between the upper slider 1 and the upper mold 3;

[0043] The upper pad 2 is provided with a plurality of through holes 2.2 extending vertically therethrough, and a plurality of nitrogen springs 4 are mounted in the through holes 2.2 in a one-to-one correspondence, and are connected to the pressing rods 3.1 (such as Figure 6 The positions of the components are shown in FIG.

[0044] In the present solution, it should be noted that the plurality of nitrogen springs 4 are installed in at least part of the through holes 2.2 in a one-to-one correspondence, that is, according to the position of the pressing rod 3.1 of the upper mold 3, the plurality of nitrogen springs 4 are installed in part of the through holes 2.2 corresponding to the position of the pressing rod 3.1; in addition, in order to avoid assembly conflicts of the nitrogen springs 4, it is required to pre-install the nitrogen springs 4, and then fix the upper pad 2 as a whole between the upper slider 1 and the upper mold 3.

[0045] It can be seen from the above technical scheme that in the upper mold assembly provided by the embodiment of the present invention, first, according to the position of the upper mold press rod, a nitrogen spring is installed in the corresponding through hole of the upper pad plate, so that the nitrogen spring and the press rod form a one-to-one matching mode, and then the upper pad plate is fixedly connected between the upper slider and the upper mold. In this way, the matching and extruding cooperation between the nitrogen spring and the press rod helps to realize the upper air cushion function of the upper mold, thereby facilitating the upper pressing operation of the upper mold. In addition, the present scheme also has the characteristics of simple structure, low manufacturing cost and easy modification.

[0046] In this scheme, if Figure 2 As shown, the cover plate 2.1 on the top of the upper pad 2 is provided with a through hole 2.2, and the top of the through hole 2.2 is a countersunk hole; in addition, the bottom of the upper pad 2 is provided with a square groove connected to the through hole 2.2;

[0047] The large head end at the top of the nitrogen spring 4 cooperates with the countersunk hole to facilitate the limited installation of the nitrogen spring 4 in one axial direction (towards the axial direction of the upper mold 3), and the top surface of the nitrogen spring 4 is flush with the top surface of the cover plate 2.1. This scheme is designed to avoid the top of the nitrogen spring 4 protruding from the top surface of the upper pad 2, ensuring that the bottom surface of the upper slider 1 forms a surface contact with the top surface of the upper pad 2, thereby realizing the limited installation of the nitrogen spring 4 in another axial direction (towards the axial direction of the upper slider 1) through the bottom surface of the upper slider 1, that is, the limit of the countersunk part of the through hole 2.2 and the interference of the bottom surface of the upper slider 1, so as to realize the fixed installation of the nitrogen spring 4 in the through hole 2.2.

[0048] Specifically, Figure 3As shown, the top cover plate 2.1 of the upper backing plate 1 is provided with a plurality of square shallow grooves 2.6, which are adjacent to each other in sequence both horizontally and vertically; a plurality of through holes 2.2 are distributed at the bottom of each square shallow groove 2.6; this solution is designed in this way to facilitate dividing the uniformly distributed through holes 2.2 into different grid areas through the square shallow grooves 2.6, thereby facilitating better identification of different through holes 2.2, which helps to arrange the nitrogen gas springs 4 more reasonably and quickly.

[0049] As Figure 4 shown, the bottom of the upper backing plate 1 is provided with square deep grooves 2.7 (i.e., the square grooves mentioned above) communicating with the through holes 2.1, and the positions of the plurality of square deep grooves 2.7 correspond one by one to at least part of the square shallow grooves 2.6. This solution is designed in this way to facilitate better alignment and cooperation between the telescopic end of the nitrogen gas spring 4 and the pressure bar, and it also helps to reduce the weight of the upper backing plate 1 and is beneficial to improving the structural stiffness of the upper backing plate 1.

[0050] In this solution, the plurality of nitrogen gas springs 4 are symmetrically distributed about the center of the upper backing plate 2 to make the force on the upper die 3 uniform in the horizontal plane.

[0051] Furthermore, as Figure 3 shown, the plurality of through holes 2.2 are uniformly distributed on the upper backing plate 2 and are symmetrically distributed about the center of the upper backing plate 2. That is, the plurality of through holes 2.2 are arranged in a rectangular array on the upper backing plate 2, and the distance between two adjacent through holes 2.1 horizontally is equal to the distance between two adjacent through holes 2.1 vertically. This solution is designed in this way to facilitate uniformly increasing the coverage area of the through holes 2.1, thereby facilitating increasing the alignment points between the nitrogen gas springs 4 and the pressure bar 3.1, which helps to make the nitrogen gas springs 4 cooperate with different upper dies 3. In this way, the versatility of the upper backing plate 2 can be greatly improved.

[0052] Furthermore, a nitrogen gas spring 4 is installed in each through hole 2.2 in a one-to-one correspondence. That is, nitrogen gas springs 4 are installed in all through holes 2.1. This solution is designed in this way so that the upper backing plate 2 in this case can be applicable to a variety of upper dies 3, and there is no need to disassemble the upper backing plate 2, but only need to replace the corresponding upper die 3. In this way, the versatility of the stamping equipment can be greatly improved.

[0053] In this solution, as Figure 2 shown, the fixed connection structure between the upper slider 1 and the upper backing plate 2 includes:

[0054] Threaded holes opened at the bottom of the upper slider 1 near its front and rear parts;

[0055] Connection holes 2.3 are opened at the front and rear ends of the top of the upper backing plate 2 for screw connection and cooperation with threaded holes (i.e., connecting the threaded holes and the connection holes 2.3 through bolt assemblies); in addition, installation grooves 2.4 are opened at the front and rear parts of the upper backing plate 2 and are in alignment and communication with the connection holes 2.3 to provide a disassembly and assembly space for the bolt assemblies; in this solution, an open connection structure is provided at the front and rear ends of the docking part of the upper slider 1 and the upper backing plate 2 to facilitate the screw connection at the edge of the upper slider 1 and the upper backing plate 2. This solution is designed in this way and has the characteristics of simple structure, convenient disassembly and assembly, and tight connection. Of course, a U-shaped groove is provided on the top wall of the inner side of the installation groove 2.4 in alignment with the connection hole 2.3 to facilitate the limit installation of the bolt head or nut of the bolt assembly.

[0056] Furthermore, as Figure 2 shown, the fixed connection structure between the upper backing plate 2 and the upper die 3 includes:

[0057] Positive T-shaped grooves 2.5 are opened at the front and rear ends of the bottom of the upper backing plate 2;

[0058] Inverted T-shaped grooves are opened at the front and rear ends of the top of the upper die 3 for snap-fitting cooperation with the positive T-shaped grooves 2.5 (i.e., clamping the positive T-shaped grooves 2.5 and the inverted T-shaped grooves through a pressing plate bolt); in this solution, a snap connection structure is provided at the front and rear ends of the docking part of the upper backing plate 2 and the upper die 3 to facilitate the snap connection at the edge of the upper backing plate 2 and the upper die 3. This solution is designed in this way and has the characteristics of simple structure, convenient installation, and reliable connection.

[0059] The embodiment of the present invention also provides a stamping device, as Figure 1 shown, including: an upper die assembly, a lower die 5, and a lower moving workbench 6, and the upper die assembly is the upper die assembly as described above. Since this solution adopts the above-mentioned upper die assembly, it also has corresponding beneficial effects, which can be specifically referred to the previous description and will not be elaborated here.

[0060] The embodiment of the present invention also provides a production process of a stamping device, including: the installation method of the upper die assembly as described above; the installation method of the upper die assembly includes:

[0061] Install nitrogen springs in the through holes corresponding to the upper backing plate;

[0062] Install the upper backing plate into the upper die assembly. This solution is designed in this way to enable the nitrogen springs and the pressure rods to form a one-to-one extrusion fit, which helps to realize the upper air cushion function of the upper die, thereby facilitating the upper blank holding operation of the upper die.

[0063] The embodiment of the present invention also provides a production process of a stamping device, including: the installation method of the upper die assembly as described above; the installation method of the upper die assembly includes:

[0064] Install nitrogen gas springs in all the through holes of the upper backing plate;

[0065] Install the upper backing plate into the upper die assembly. With this design, nitrogen gas springs are installed in all the through holes, enabling the upper backing plate to be applicable to multiple upper dies. Moreover, instead of disassembling the upper backing plate, only the corresponding upper die needs to be replaced, thus greatly improving the versatility of the stamping equipment.

[0066] The following is a further introduction to this solution:

[0067] This solution involves the coordinated production of metal stamping equipment and upper blank-holding dies, belonging to the stamping line production process and applicable to large-scale use.

[0068] The purpose of this solution:

[0069] 1. Realize upper blank-holding for the die with upper blank-holding;

[0070] 2. Greatly reduce the time and product budget;

[0071] 3. Have strong versatility and can be used for all equipment.

[0072] The working process of this solution:

[0073] A. Manufacture an upper backing plate that meets the equipment requirements, as shown in Figure 2 and Figure 3 ;

[0074] B. Purchase a batch of nitrogen gas springs of appropriate sizes;

[0075] C. After positioning and installing the die on the stamping equipment, install the upper backing plate through die positioning. Then, arrange the nitrogen gas springs reasonably according to the position of the blank-holding rod of the die with upper blank-holding. Refer to Figure 5 ; among them, the positions of the nitrogen gas springs correspond one by one to the positions of the blank-holding rods.

[0076] D. If the budget is sufficient, nitrogen gas springs can be fully covered on the upper backing plate, which will not affect the use effect;

[0077] E. Fix the upper backing plate to the upper slider, and then fix the die to the backing plate;

[0078] F. If the upper backing plate is fully covered with nitrogen gas springs, the backing plate does not need to be disassembled in the future. If the nitrogen gas springs cannot be fully covered, the work in C can be repeated.

[0079] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other.

[0080] The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An upper die assembly, characterized in that, it includes: an upper slide block (1), an upper backing plate (2), an upper die (3) and a nitrogen spring (4); the upper backing plate (2) is fixedly connected between the upper slide block (1) and the upper die (3); the upper backing plate (2) is provided with a plurality of through holes (2.2) penetrating up and down, and a plurality of the nitrogen springs (4) are respectively installed in the through holes (2.2) and correspond to the positions of the pressure rods (3.1) of the upper die (3) one by one; a cover plate (2.1) on the top of the upper backing plate (2) is provided with the through holes (2.2), and the top end of the through hole (2.2) is a counterbore; the large head end at the top of the nitrogen spring (4) is matched with the counterbore, and the top surface of the nitrogen spring (4) is flush with the top surface of the cover plate (2.1); the cover plate (2.1) is provided with a plurality of square shallow grooves (2.6), and they are adjacent to each other in sequence both horizontally and vertically; a plurality of the through holes (2.2) are distributed at the bottom of each square shallow groove (2.6); the bottom of the upper backing plate (2) is provided with square deep grooves (2.7) communicated with the through holes (2.2), and a plurality of the square deep grooves (2.7) correspond to the positions of at least part of the square shallow grooves (2.6) one by one.

2. The upper die assembly according to claim 1, characterized in that, a plurality of the nitrogen springs (4) are symmetrically distributed about the center of the upper backing plate (2).

3. The upper die assembly according to claim 1, characterized in that, each of the through holes (2.2) is respectively installed with the nitrogen spring (4).

4. The upper die assembly according to claim 3, characterized in that, a plurality of the through holes (2.2) are symmetrically distributed about the center of the upper backing plate (2).

5. The upper die assembly according to claim 1, characterized in that, the fixed connection structure between the upper slide block (1) and the upper backing plate (2) includes: a threaded hole opened at the bottom of the upper slide block (1); a connection hole (2.3) opened at the top of the upper backing plate (2) for screwing and cooperating with the threaded hole.

6. The upper die assembly according to claim 1, characterized in that, the fixed connection structure between the upper backing plate (2) and the upper die (3) includes: a positive T-shaped groove (2.5) opened at the bottom of the upper backing plate (2); an inverted T-shaped groove opened at the top of the upper die (3) for clamping and cooperating with the positive T-shaped groove (2.5).

7. A stamping device, including: an upper die assembly, a lower die (5) and a lower moving workbench (6), characterized in that the upper die assembly is the upper die assembly according to any one of claims 1-6.

8. A production process of a stamping device, characterized in that, it includes: an installation method of the upper die assembly according to any one of claims 1-6; the installation method of the upper die assembly includes: installing nitrogen springs in the corresponding through holes of the upper backing plate; loading the upper backing plate into the upper die assembly.

9. A production process of a stamping device, characterized in that, it includes: an installation method of the upper die assembly according to claim 3; the installation method of the upper die assembly includes: Install nitrogen gas springs in all through holes of the upper backing plate; Install the upper backing plate into the upper die assembly.

Images