Stamping and bending tool

Abstract

The utility model discloses a stamping and bending tool, and belongs to the technical field of tools. The stamping and bending tool comprises a first module and a second module, the first module comprises an upper die base, a nitrogen spring, an abutting assembly and a rolling forming die with a rolling forming cavity, one end of the nitrogen spring is connected with the upper die base, and the other end of the nitrogen spring is connected with the abutting assembly; the edge rolling forming die is arranged on the upper die holder; the second die set comprises a lower die base and an inclined face female die, the inclined face female die is arranged on the lower die base, the abutting assembly and the inclined face female die are oppositely arranged and used for pressing a front opening plate, and the edge rolling forming die is stopped on the inclined face female die. The stamping die is used for stamping the inner circle right-angle side of the front opening plate and enabling the inner circle right-angle side to deform along the edge rolling forming cavity. According to the front opening plate forming device, manual beating forming is not needed, and batch production of front opening plates is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling, in particular to a stamping and bending tooling. Background Art

[0002] A washing machine is a cleaning appliance that uses electric energy to generate mechanical action to wash clothes. It mainly consists of a cabinet, a washing and dewatering tub (some washing and dewatering tubs are separated), a transmission and control system, etc., and some are also equipped with a heating device.

[0003] Washing machines can be divided into various types, including pulsator washing machines, drum washing machines or steam washing machines, etc. Among them, the manufacturing process of the inner circular right-angle edge curling of the front opening plate center of the traditional washing machine drum depends on the additional manual beating and forming by workers, which not only increases the noise pollution, but also may damage the surface of the workpiece, causing subsequent rust risk, and then may cause damage to the clothes during the cleaning process or stain the clothes with rust, and the processing efficiency is low, which is not conducive to the batch production of workpieces.

[0004] Therefore, there is an urgent need to provide a stamping and bending tooling to solve the above problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a stamping and bending tooling, which does not require manual beating and forming, and helps to batch-produce the front opening plate.

[0006] To achieve the above purpose, the following technical solutions are provided:

[0007] The stamping and bending tooling includes:

[0008] A first module, including an upper die base, a nitrogen spring, a pressing component and a curling forming die with a curling forming cavity, one end of the nitrogen spring is connected to the upper die base, the other end of the nitrogen spring is connected to the pressing component, and the curling forming die is arranged on the upper die base;

[0009] A second module, including a lower die base and an inclined surface female die, the inclined surface female die is arranged on the lower die base, the pressing component is arranged opposite to the inclined surface female die for pressing the front opening plate, and the curling forming die stops at the inclined surface female die for stamping the inner circular right-angle edge of the front opening plate and deforming the inner circular right-angle edge along the curling forming cavity.

[0010] As an optional solution of the stamping and bending tooling, the pressing component includes an inclined surface pressing die and a pressing cover, the pressing cover is connected to the end of the nitrogen spring away from the upper die base, the inclined surface pressing die is arranged on the pressing cover, and the first inclined surface of the inclined surface pressing die has the same inclination angle as the second inclined surface of the inclined surface female die for pressing the tapered sleeve of the front opening plate, and the pressing cover cooperates with the lower die base to press the straight plate part of the front opening plate.

[0011] As an alternative solution for the stamping and bending tooling, an avoidance groove is provided at one end of the gland away from the upper die base, and the reinforcing rib of the front mouth plate is received in the avoidance groove.

[0012] As an alternative solution for the stamping and bending tooling, a first annular limiting portion is provided at one end of the gland away from the upper die base, a second annular limiting portion is provided on the lower die base, the outer diameter of the first annular limiting portion is smaller than the inner diameter of the second annular limiting portion, and the first annular limiting portion is used for bending the outer edge of the front mouth plate.

[0013] As an alternative solution for the stamping and bending tooling, the first module further includes a guide post and a first spacer ring. The first spacer ring is provided at one end of the gland close to the upper die base. A guide through hole is provided through the upper die base. One end of the guide post is connected to the first spacer ring, and the other end of the guide post is inserted into the guide through hole.

[0014] As an alternative solution for the stamping and bending tooling, the first spacer block is provided with a threaded hole, a screw rod portion is provided at one end of the guide post away from the upper die base, and the screw rod portion is threadedly connected to the threaded hole.

[0015] As an alternative solution for the stamping and bending tooling, a limiting step is provided in the guide through hole, a limiting head is provided at one end of the guide post away from the first spacer ring, and the limiting head is stopped at the limiting step.

[0016] As an alternative solution for the stamping and bending tooling, the first module further includes a second spacer ring. The second spacer block is provided between the curling forming die and the upper die base, and / or

[0017] The second module further includes a third spacer ring. The third spacer ring is provided between the inclined surface concave die and the lower die base.

[0018] As an alternative solution for the stamping and bending tooling, the second module further includes a sliding wall limiting ring. The sliding wall limiting ring is provided at one end of the inclined surface concave die away from the lower die base, and the inner side wall of the curling forming die can slide along the outer side wall of the sliding wall limiting ring.

[0019] As an alternative solution for the stamping and bending tooling, a plurality of the nitrogen springs are circumferentially spaced between the gland and the upper die base.

[0020] Compared with the prior art, the beneficial effects of the present utility model are:

[0021] The stamping and bending tooling provided by the present utility model is provided with a nitrogen spring and a pressing component on the upper die base in the height direction in sequence. An inclined surface female die is installed on the lower die base. The workpiece front mouth plate is placed on the second module. During the descent of the first module, the front mouth plate is pressed tightly through the cooperation of the pressing component and the inclined surface female die, avoiding the displacement of the front mouth plate before stamping deformation and reducing the stamping precision. The curling forming die with a curling forming cavity is installed on the upper die base. During the continuous descent of the first module, the curling forming die is in direct contact with the inner circular right-angle edge of the front mouth plate, and is used for stamping the inner circular right-angle edge of the front mouth plate to deform and bend into a target shape along the curling forming cavity. By adding a nitrogen spring, on the one hand, it can buffer the vibration influence brought by the stamping process, and on the other hand, when the downward pressure of the driving mechanism on the upper die base is removed, the nitrogen spring can reset and jack up the curling forming die. Using the stamping and bending tooling provided by this embodiment, there is no need for manual knocking and forming, which helps the batch production of the front mouth plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the description of the embodiments of the present utility model. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the content of the embodiments of the present utility model and these drawings.

[0023] Figure 1 It is a schematic diagram of the structure of the first module and the second module of the stamping and bending tooling in the embodiment of the present utility model approaching each other;

[0024] Figure 2 It is a schematic diagram of the structure of the first module and the second module of the stamping and bending tooling in the embodiment of the present utility model moving away from each other;

[0025] Figure 3 is Figure 2 It is a partial enlarged view of place A;

[0026] Figure 4 is Figure 2 It is a partial enlarged view of place B;

[0027] Figure 5 It is a schematic diagram of the principle of the stamping and bending tooling in the embodiment of the present utility model for stamping the front mouth plate.

[0028] Reference numerals:

[0029] 1. First module; 2. Second module; 3. Front mouth plate; 31. Inner circular right-angle edge; 32. Tapered sleeve; 33. Straight plate part; 34. Reinforcing rib;

[0030] 11. Upper die base; 111. Guide through hole; 112. Limit step; 12. Nitrogen spring; 13. Roll forming die; 131. Roll forming cavity; 14. Inclined surface pressing die; 141. First inclined surface; 15. Pressure cover; 151. Avoidance groove; 152. First annular limiting portion; 16. Guide pillar; 161. Screw portion; 162. Limit head; 17. First heightening ring; 171. Threaded hole; 18. Second heightening ring;

[0031] 21. Lower die base; 211. Second annular limiting portion; 22. Inclined surface concave die; 221. Second inclined surface; 23. Third heightening ring; 24. Slide wall limiting ring. Detailed implementation manners

[0032] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0033] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. It is only for the convenience of describing the present utility model 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 a limitation to the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0034] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set" and "connect" 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. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0035] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model and cannot be understood as a limitation to the present utility model.

[0036] In order to avoid manual forming and facilitate the mass production of the front mouth plate, this embodiment provides a stamping and bending tooling, which will be described in detail below in combination with Figures 1 to 5 the specific content of this embodiment. It should be noted that both the height direction and the vertical direction mentioned in this embodiment refer to the Figure 2 Z direction in

[0037] The stamping and bending tooling in this embodiment includes a first module 1 and a second module 2. The first module 1 includes an upper die base 11, a nitrogen spring 12, a pressing component, and a curling forming die 13 with a curling forming cavity 131. One end of the nitrogen spring 12 is connected to the upper die base 11, and the other end of the nitrogen spring 12 is connected to the pressing component. The curling forming die 13 is arranged on the upper die base 11. The second module 2 includes a lower die base 21 and an inclined surface female die 22. The inclined surface female die 22 is arranged on the lower die base 21. The pressing component is arranged opposite to the inclined surface female die 22 for pressing the front mouth plate 3. The curling forming die 13 stops at the inclined surface female die 22 for stamping the inner circular right-angle edge 31 of the front mouth plate 3 and deforming the inner circular right-angle edge 31 along the curling forming cavity 131.

[0038] In short, for the stamping and bending tooling provided by the present utility model, a nitrogen spring 12 and a pressing component are sequentially arranged on the upper die base 11 in the height direction, and an inclined surface female die 22 is installed on the lower die base 21. The workpiece front mouth plate 3 is placed on the second module 2. During the downward movement of the first module 1, the front mouth plate 3 is pressed by the cooperation of the pressing component and the inclined surface female die 22 to prevent the front mouth plate 3 from displacing before stamping deformation and reduce the stamping accuracy. The curling forming die 13 with a curling forming cavity 131 is installed on the upper die base 11. During the continuous downward movement of the first module 1, the curling forming die 13 is in direct contact with the inner circular right-angle edge 31 of the front mouth plate 3 for stamping the inner circular right-angle edge 31 of the front mouth plate 3 to be deformed and bent into a target shape along the curling forming cavity 131. By adding a nitrogen spring 12, on the one hand, it can buffer the vibration impact during the stamping process, and on the other hand, when the downward pressure of the driving mechanism on the upper die base 11 is removed, the nitrogen spring 12 can reset and lift the curling forming die 13. Using the stamping and bending tooling provided by this embodiment, there is no need for manual forming, which helps the mass production of the front mouth plate 3.

[0039] Further, the pressing component includes an inclined surface die 14 and a gland 15. The gland 15 is connected to the end of the nitrogen spring 12 away from the upper die base 11. The inclined surface die 14 is arranged on the gland 15, and the first inclined surface 141 of the inclined surface die 14 has the same inclination angle as the second inclined surface 221 of the inclined surface female die 22, and is used to press the tapered sleeve 32 of the front plate 3. The gland 15 cooperates with the lower die base 21 to press the straight plate portion 33 of the front plate 3. By adding the inclined surface die 14 and the gland 15, it is convenient to press and fix the position of the front plate 3, and avoid deviation during the process of stamping the inner circle right-angle edge 31 of the front plate 3, which affects the deformation of the inner circle right-angle edge 31.

[0040] Further, an avoidance groove 151 is arranged at the end of the gland 15 away from the upper die base 11, and the reinforcing rib 34 of the front plate 3 is received in the avoidance groove 151. By adding the avoidance groove 151, during the stamping process, the reinforcing rib 34 of the front plate 3 is prevented from interfering with the gland 15. Exemplarily, a plurality of avoidance grooves 151 are arranged on the lower surface of the gland 15 to match the reinforcing ribs 34 at different positions on the front plate 3, which helps to expand the applicable range of the stamping and bending tooling.

[0041] Further, as Figure 1 、 Figure 2 Combined with Figure 5 shown, a first annular limiting portion 152 is arranged at the end of the gland 15 away from the upper die base 11, and a second annular limiting portion 211 is arranged on the lower die base 21. The outer diameter of the first annular limiting portion 152 is smaller than the inner diameter of the second annular limiting portion 211, and the first annular limiting portion 152 is used to bend the outer edge of the front plate 3. During the descending process of the gland 15, the first annular limiting portion 152 and the second annular limiting portion 211 are made to cooperate to bend the outer edge of the front plate 3.

[0042] Further, as Figures 2 to 4 shown, the first module 1 further includes a guide post 16 and a first shim ring 17. The first shim ring 17 is arranged at the end of the gland 15 close to the upper die base 11. A guiding through hole 111 is formed through the upper die base 11. One end of the guide post 16 is connected to the first shim ring 17, and the other end of the guide post 16 is inserted into the guiding through hole 111. After the gland 15 presses against the upper surface of the workpiece, the upper die base 11 continues to descend. By adding the guide post 16 and the guiding through hole 111, it is convenient to guide the upper die base 11 to drive the curling forming die 13 to move only up and down in the vertical direction.

[0043] Further, as Figure 2 Combined with Figure 4As shown, the first heightening block is provided with a threaded hole 171, and one end of the guide post 16 away from the upper die base 11 is provided with a screw rod portion 161, and the screw rod portion 161 is threadedly connected to the threaded hole 171. By adopting the threaded connection method, on the one hand, one end of the guide rod can be fixedly connected to the first heightening block; on the other hand, the user can adjust the length of the screw rod portion 161 screwed into the threaded hole 171 according to the usage requirements.

[0044] Further, as Figure 2 Combined with Figure 3 shown, a limiting step 112 is provided in the guiding through hole 111, and a limiting head 162 is provided at one end of the guide post 16 away from the first heightening ring 17, and the limiting head 162 is stopped at the limiting step 112. By adding the limiting step 112 and the limiting head 162, when the stamping is completed and the nitrogen spring 12 jacks up the upper die base 11, the upper die base 11 is prevented from being disengaged from the guide post 16.

[0045] Further, the first module 1 further includes a second heightening ring 18, the second heightening block is arranged between the curling forming die 13 and the upper die base 11, and / or the second module 2 further includes a third heightening ring 23, and the third heightening ring 23 is arranged between the inclined plane female die 22 and the lower die base 21. By adding the second heightening ring 18, the height of the curling forming die 13 relative to the upper die base 11 can be adjusted according to the actual usage situation. By adding the third heightening ring 23, it is convenient for the operator to adjust the height of the inclined plane female die 22 relative to the lower die base 21 according to the actual usage situation, thereby promoting the bending deformation of the inner circular right-angle edge 31 of the front mouth plate 3.

[0046] Further, as Figure 1 Combined with Figure 2 shown, the second module 2 further includes a sliding wall limiting ring 24, the sliding wall limiting ring 24 is arranged at one end of the inclined plane female die 22 away from the lower die base 21, and the inner side wall of the curling forming die 13 can slide along the outer side wall of the sliding wall limiting ring 24. When the curling forming die 13 descends to stamp the inner circular right-angle edge 31 of the front mouth plate 3, since the inner side wall of the curling forming die 13 can slide along the outer side wall of the sliding wall limiting ring 24, the curling forming die 13 can only move in the vertical direction, which helps to guide the bending deformation of the inner circular right-angle edge 31.

[0047] Further, a plurality of nitrogen springs 12 are circumferentially arranged at intervals between the gland 15 and the upper die base 11. On the one hand, it can further buffer the vibration influence, and on the other hand, it can make the gland 15 uniformly stressed and prevent the gland 15 from tilting.

[0048] Note that the above is only the preferred embodiment of the present utility model and the applied technical principles. Those skilled in the art will understand that the present utility model is not limited to the specific embodiments described herein, and various obvious changes, re-adjustments, and substitutions can be made by those skilled in the art without departing from the protection scope of the present utility model. Therefore, although the present utility model has been described in detail through the above embodiments, the present utility model is not limited to the above embodiments only. Without departing from the concept of the present utility model, more other equivalent embodiments can be included, and the scope of the present utility model is determined by the scope of the appended claims.

Claims

1. Stamping and bending tooling, characterized in that: include: A first die set (1) comprises an upper die seat (11), a nitrogen spring (12), a pressing assembly and a rolling forming die (13) having a rolling forming cavity (131), one end of the nitrogen spring (12) being connected to the upper die seat (11), the other end of the nitrogen spring (12) being connected to the pressing assembly, and the rolling forming die (13) being arranged on the upper die seat (11); The second die set (2) comprises a lower die base (21) and an inclined surface die (22), wherein the inclined surface die (22) is arranged on the lower die base (21), the pressing assembly is arranged opposite to the inclined surface die (22) and is used to press the front mouth plate (3), and the rounding forming die (13) is stopped at the inclined surface die (22) and is used to punch the inner circle right angle edge (31) of the front mouth plate (3) and deform the inner circle right angle edge (31) along the rounding forming cavity (131).

2. The punching and bending tool according to claim 1, characterized in that: The pressing assembly comprises an inclined die (14) and a pressure cover (15), wherein the pressure cover (15) is connected to one end of the nitrogen spring (12) away from the upper die seat (11), the inclined die (14) is arranged on the pressure cover (15), and the first inclined surface (141) of the inclined die (14) and the second inclined surface (221) of the inclined die (22) have the same inclination angle, and are used to press the conical sleeve (32) of the front plate (3), and the pressure cover (15) cooperates with the lower die seat (21) to press the straight plate portion (33) of the front plate (3).

3. The stamping and bending tool according to claim 2, characterized in that: An escape groove (151) is provided at one end of the pressure cover (15) away from the upper die seat (11), and the reinforcing rib (34) of the front plate (3) is accommodated in the escape groove (151).

4. The stamping and bending tool according to claim 2, characterized in that: A first annular limiting portion (152) is provided at one end of the pressure cover (15) away from the upper die seat (11), and a second annular limiting portion (211) is provided on the lower die seat (21), the outer diameter of the first annular limiting portion (152) is smaller than the inner diameter of the second annular limiting portion (211), and the first annular limiting portion (152) is used to bend the outer edge of the front mouth plate (3).

5. The stamping and bending tool according to claim 2, characterized in that: The first die assembly (1) further comprises a guide column (16) and a first padding ring (17); the first padding ring (17) is arranged at one end of the pressure cover (15) close to the upper die seat (11); a guide through hole (111) is provided through the upper die seat (11); one end of the guide column (16) is connected to the first padding ring (17), and the other end of the guide column (16) is passed through the guide through hole (111).

6. The punching and bending tool according to claim 5, characterized in that: The first cushion ring is provided with a threaded hole (171), and one end of the guide column (16) away from the upper die seat (11) is provided with a screw portion (161), and the screw portion (161) is threadedly connected to the threaded hole (171).

7. The punching and bending tool according to claim 5, characterized in that: A limiting step (112) is arranged in the guide through hole (111), and a limiting head (162) is arranged at one end of the guide column (16) away from the first pad ring (17), and the limiting head (162) is stopped on the limiting step (112).

8. The stamping and bending tool according to claim 2, characterized in that: The first die set (1) further comprises a second cushioning ring (18), the second cushioning ring being arranged between the rolling forming die (13) and the upper die seat (11), and / or The second die set (2) further comprises a third padding ring (23), wherein the third padding ring (23) is arranged between the inclined surface die (22) and the lower die seat (21).

9. The punching and bending tool according to claim 2, characterized in that: The second die set (2) further comprises a sliding wall limiting ring (24), wherein the sliding wall limiting ring (24) is arranged at one end of the inclined surface die (22) away from the lower die seat (21), and the inner side wall of the rolling forming die (13) can slide along the outer side wall of the sliding wall limiting ring (24).

10. The punching and bending tool according to any one of claims 2 to 9, characterized in that: A plurality of nitrogen springs (12) are arranged at circumferential intervals between the pressure cover (15) and the upper die seat (11).

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