Forming device with lower shovel base

Abstract

The utility model relates to a forming device of a lower shovel base. The forming device comprises an upper die assembly and a lower die assembly. The upper die assembly comprises an upper die plate, a stripper plate, an opposite ejection block and a first elastic piece. The stripper plate is arranged below the upper die plate and connected with the upper die plate through a first elastic piece. The opposite ejection block is mounted at the bottom of the upper die plate, and a through hole is formed in the position, corresponding to the opposite ejection block, of the stripper plate; the lower die assembly comprises a lower die plate, a limiting column, a sliding block, a shovel base, a second elastic piece and a third elastic piece. The limiting column is installed on the lower die plate. The shovel base is slidably connected to the lower die plate and can ascend and descend, a first inclined face is arranged at the side end of the shovel base, and the shovel base is connected with the lower die plate through a second elastic piece; the sliding block is connected to the lower die plate in a sliding mode and can be transversely close to or away from the shovel base, a second inclined face is arranged on the sliding block, and the sliding block is connected with the lower die plate through the third elastic piece. The side forming structure solves the problem that a side forming structure in an existing progressive die is limited, so that the step pitch of the progressive die is large.

Description

Technical Field

[0001] The utility model relates to the technical field of progressive dies, in particular to a molding device with a bottom shovel base. Background Art

[0002] The progressive die (also called continuous die) consists of multiple stations, each of which completes different processing in sequence, completing a series of different stamping processes in one stroke of the punch press. After one stroke is completed, the punch press feeder moves the material forward at a fixed step distance, so that multiple processes can be completed on one die, generally punching, blanking, bending, trimming, drawing, etc.

[0003] With the development of economy, the automation requirements for progressive dies are getting higher and higher. The most important thing about progressive dies is the step distance. The smaller the step distance, the higher the material utilization rate.

[0004] Referring to the utility model patent with publication number CN211330983U, which is an existing progressive die, the structure for driving the side molding of the workpiece is composed of components such as a slider, a driving block, and an elastic reset member. Among them, the driving block is relatively long, and the stability is insufficient when the driving slider moves. In addition, the driving block occupies a large space. When the driving slider moves downward, it needs to extend from the gap between the two workpieces. This design causes the step distance of the progressive die to be increased accordingly, reducing the utilization rate of the material.

[0005] Therefore, it is necessary to provide a technical solution to solve the above problems. Utility Model Content

[0006] The utility model provides a molding device with a bottom shovel base, aiming to solve the problem that the existing progressive die mid-side molding structure has a large progressive die step and insufficient sliding block movement stability due to structural limitations.

[0007] In order to achieve the above-mentioned object, the utility model provides a molding device with a shovel base placed below, comprising an upper mold assembly and a lower mold assembly, wherein:

[0008] The upper mold assembly includes an upper mold plate, a stripper plate, a top block and a first elastic member; the stripper plate is arranged below the upper mold plate and is connected to the upper mold plate through the first elastic member; the top block is installed at the bottom of the upper mold plate, and the stripper plate is provided with a through hole at a position corresponding to the top block;

[0009] The lower mold assembly includes a lower mold plate, a limiting column, a sliding block, a shovel base, a second elastic member and a third elastic member; the limiting column is installed on the lower mold plate; the shovel base is slidably connected to the lower mold plate, and can be lifted and lowered, the position of the shovel base corresponds to the top block, and its side end is provided with a first inclined surface at the bottom, and the second elastic member connects the shovel base with the lower mold plate; the sliding block is slidably connected to the lower mold plate, and can be laterally approached or moved away from the shovel base, and the side of the sliding block close to the shovel base is provided with a second inclined surface at the top that is compatible with the first inclined surface, and the third elastic member connects the sliding block with the lower mold plate.

[0010] More specifically, the first elastic member, the second elastic member and the third elastic member are all nitrogen springs.

[0011] More specifically, a wear-resistant block is installed on the sliding block, and the shovel base is in contact with the wear-resistant block.

[0012] More specifically, the wear-resistant block is made of high-strength brass material.

[0013] More specifically, a killing block is provided below the shovel base, and the killing block is fixedly connected to the lower template.

[0014] More specifically, a guide block is installed on the lower template, and a guide groove is provided on the guide block; a protrusion is provided on the side end of the shovel base, and the protrusion is slidably connected in the guide groove.

[0015] More specifically, the lower template is installed with a lower pad, the lower pad is provided with a slide groove adapted to the shovel base, and the shovel base is slidably connected in the slide groove.

[0016] More specifically, a sliding rod is installed at the bottom of the shovel base, a sliding hole matched with the sliding rod is opened on the lower template, and the sliding rod is slidably connected in the sliding hole.

[0017] More specifically, a plurality of positioning blocks are installed on the stripping plate, and a positioning cavity is provided at the bottom of the positioning block.

[0018] More specifically, a guide post is installed on the stripping plate, a guide hole matched with the guide post is opened on the upper template, and the guide post passes through the guide hole.

[0019] The technical effects of the forming device of the bottom shovel base involved in the utility model are:

[0020] The present application sets the shovel base on the lower template, and adds a top block that cooperates with the shovel base on the upper template. In this way, when the upper template moves downward to make the shovel base drive the slider to move, the shovel base is driven downward by the top block located on the outside of the workpiece, and the shovel base moves downward to drive the slider to slide, thereby performing side pressure forming on the workpiece. During the process, the shovel base and the workpiece do not interfere with each other. In this way, there is no need to increase the step distance, thereby improving material utilization. In addition, the overall length of the shovel base is shorter, and the overall stability during lifting and lowering activities can thereby improve the stability of the slider movement and improve the workpiece yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a molding device with a lower shovel base in the mold opening state involved in the utility model;

[0022] Figure 2 It is a schematic diagram of the cooperation between the shovel base and the lower pad in a forming device with a lower shovel base involved in the utility model;

[0023] Figure 3 It is a structural schematic diagram of a stripping plate in a molding device with a bottom shovel base involved in the utility model;

[0024] Figure 4 It is a cross-sectional schematic diagram of a molding device with a bottom shovel base involved in the utility model when a stripping plate just contacts with a limiting column;

[0025] Figure 5 The utility model is a cross-sectional schematic diagram of a forming device with a bottom shovel base in a state where the shovel base is locked.

[0026] Markings in the figure:

[0027] 1. Upper mold assembly; 2. Lower mold assembly;

[0028] 11. upper template; 12. stripping plate; 121. positioning block; 122. guide column; 13. top block; 14. first elastic member;

[0029] 21. Lower template; 211. Kill block; 212. Guide block; 22. Limit column; 23. Sliding block; 231. Wear-resistant block; 24. Shovel base; 241. Bump; 242. Sliding rod; 25. Second elastic member; 26. Third elastic member; 27. Lower pad; 28. Stop block. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0031] It should be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be a central element at the same time; when an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0033] In the description of the embodiments of the present invention, it should be understood that the directions or positional relationships indicated by “up”, “down”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside”, etc., are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0034] In order to more clearly illustrate the technical solution of the utility model, a preferred embodiment is provided below. Figure 1 to Figure 5 , a molding device with a bottom shovel base, comprising an upper mold assembly 1 and a lower mold assembly 2, wherein:

[0035] The upper mold assembly 1 includes an upper mold plate 11, a stripper plate 12, a top block 13 and a first elastic member 14; the stripper plate 12 is arranged below the upper mold plate 11, and is connected to the upper mold plate 11 through the first elastic member 14; the top block 13 is installed at the bottom of the upper mold plate 11, and the stripper plate 12 is provided with a through hole at a position corresponding to the top block 13;

[0036] The lower mold assembly 2 includes a lower mold plate 21, a limiting column 22, a slider 23, a shovel base 24, a second elastic member 25 and a third elastic member 26; the limiting column 22 is installed on the lower mold plate 21; the shovel base 24 is slidably connected to the lower mold plate 21, and it can be lifted and lowered. The position of the shovel base 24 corresponds to the top block 13, and its side end is provided with a first inclined surface at the bottom, and the second elastic member 25 connects the shovel base 24 with the lower mold plate 21; the slider 23 is slidably connected to the lower mold plate 21, and it can be laterally approached or moved away from the shovel base 24. The side of the slider 23 close to the shovel base 24 is provided with a second inclined surface at the top that is compatible with the first inclined surface, and the third elastic member 26 connects the slider 23 with the lower mold plate 21.

[0037] The working process of the forming device with a lower shovel base involved in the utility model is as follows: when the mold is closed, the upper template 11 is driven downward by the punching machine table. During the downward movement of the upper template 11, the stripper plate 12 will first press the workpiece downward to position the workpiece until the stripper plate 12 touches the limiting column 22, and then the stripper plate 12 stops moving, while the top block 13 continues to move downward with the upper template 11 until it contacts and presses down the shovel base 24, and the shovel base 24 starts to move downward under the downward pressure of the top block 13, and under the cooperation of the first inclined surface and the second inclined surface, the slider 23 starts to move, and when the shovel base 24 moves to the first inclined surface and the second inclined surface, the slider 23 starts to move. During separation, the slider 23 contacts the product, while the shovel base 24 continues to move downward for a distance under the action of the top block 13 to ensure stable forming of the workpiece; during mold opening, the upper template 11 moves upward under the drive of the punching machine, while the top block 13 moves upward with the upper template 11, thereby removing the pressure on the shovel base 24. Under the action of the second elastic member 25 and the third elastic member 26, the slider 23 and the shovel base 24 automatically reset. Under the action of the first elastic member 14, the stripping plate 12 temporarily maintains its positioning effect on the product until the first elastic member 14 can pull the stripping plate 12, and the stripping plate 12 is separated from the limiting column 22 again. The difference from the existing structure is that, in the present application, a shovel base 24 is arranged on the lower template 21, and an opposing block 13 which cooperates with the shovel base 24 is added to the upper template 11. In this way, when the upper template 11 moves downward, the opposing block 13 located on the outside of the workpiece can drive the shovel base 24 to move downward, so that the shovel base 24 drives the slider 23 to slide, thereby completing the side pressure forming of the workpiece. During the process, the shovel base 24 and the workpiece do not interfere with each other. In this way, there is no need to increase the step distance, thereby improving the material utilization rate. In addition, the overall length of the shovel base 24 is relatively short, and the overall stability during lifting and lowering activities can thereby improve the stability of the movement of the slider 23 and improve the yield rate of the workpiece.

[0038] In this embodiment, the first elastic member 14, the second elastic member 25 and the third elastic member 26 are all nitrogen springs. It should be understood that the nitrogen spring has a small volume, a large elastic force, a long stroke and a long service life. The use of the nitrogen spring to provide elastic force can ensure that the shovel base 24, the slider 23 and the stripper plate 12 are smoothly reset.

[0039] In this embodiment, a wear block 231 is installed on the slider 23, and the shovel base 24 is in contact with the wear block 231. With this design, the slider 23 and the shovel base 24 can maintain high-precision matching for a long time, and when any part is worn, only the wear block 231 needs to be replaced, and the maintenance cost is low.

[0040] Preferably, a wear-resistant block 231 is also provided at the bottom of the sliding block 23 .

[0041] Preferably, the wear-resistant block 231 is made of high-strength brass material. High-strength brass material has high strength, high hardness, strong chemical corrosion resistance, and a long service life.

[0042] In this embodiment, a killing block 211 is provided below the shovel base 24, and the killing block 211 is fixedly connected to the lower template 21. In actual application, when the top block 13 drives the shovel base 24 to move into position, the shovel base 24 contacts the killing block 211, and the shovel base 24 is supported by the killing block 211. With this design, the shovel base 24 can be prevented from damaging the lower template 21 during movement, thereby increasing the service life of the lower template 21.

[0043] In this embodiment, a guide block 212 is installed on the lower template 21, and a guide groove is formed on the guide block 212; a protrusion 241 is provided on the side end of the shovel base 24, and the protrusion 241 is slidably connected in the guide groove. In actual application, the protrusion 241 can slide along the guide groove, and the cooperation between the protrusion 241 and the guide groove improves the stability of the movement of the shovel base 24, thereby improving the yield rate of the workpiece.

[0044] Preferably, the slider 23 and the lower mold plate 21 are also provided with matching protrusions 241 and guide blocks 212 to improve the sliding stability of the slider 23.

[0045] In this embodiment, the lower template 21 is installed with a lower pad 27, and the lower pad 27 is provided with a slide groove adapted to the shovel base 24, and the shovel base 24 is slidably connected in the slide groove. In practical applications, the shovel base 24 is restricted in the slide groove to improve the sliding stability of the shovel base 24.

[0046] In this embodiment, a slide bar 242 is installed at the bottom of the shovel base 24, and a slide hole matching the slide bar 242 is opened on the lower template 21, and the slide bar 242 is slidably connected in the slide hole. This design further improves the sliding stability of the shovel base 24.

[0047] In this embodiment, a stopper 28 is installed on the lower pad 27. The stopper 28 is used to limit the upward height of the shovel base 24.

[0048] In this embodiment, a plurality of positioning blocks 121 are installed on the stripper plate 12, and a positioning cavity is provided at the bottom of the positioning block 121. It should be understood that a protrusion is provided on the material strip, and the structure of the positioning cavity is adapted to the structure of the protrusion, and through the cooperation of the positioning cavity and the protrusion, the stripper plate 12 has a positioning effect on the material strip.

[0049] In this embodiment, a guide post 122 is installed on the stripper plate 12, and a guide hole matching the guide post 122 is opened on the upper template 11, and the guide post 122 passes through the guide hole. With this design, the stability of the relative movement between the stripper plate 12 and the upper template 11 is improved.

[0050] The above description is only a preferred embodiment of the present invention, and its structure is not limited to the shapes listed above. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A forming device with a bottom shovel base, characterized in that: It includes an upper mold assembly and a lower mold assembly, wherein: The upper mold assembly includes an upper mold plate, a stripper plate, a top block and a first elastic member; the stripper plate is arranged below the upper mold plate and is connected to the upper mold plate through the first elastic member; the top block is installed at the bottom of the upper mold plate, and the stripper plate is provided with a through hole at a position corresponding to the top block; The lower mold assembly includes a lower mold plate, a limiting column, a sliding block, a shovel base, a second elastic member and a third elastic member; the limiting column is installed on the lower mold plate; the shovel base is slidably connected to the lower mold plate, and can be lifted and lowered, the position of the shovel base corresponds to the top block, and its side end is provided with a first inclined surface at the bottom, and the second elastic member connects the shovel base with the lower mold plate; the sliding block is slidably connected to the lower mold plate, and can be laterally approached or moved away from the shovel base, and the side of the sliding block close to the shovel base is provided with a second inclined surface at the top that is compatible with the first inclined surface, and the third elastic member connects the sliding block with the lower mold plate.

2. A forming device with a bottom shovel base according to claim 1, characterized in that: The first elastic member, the second elastic member and the third elastic member are all nitrogen springs.

3. A forming device with a bottom shovel base according to claim 1, characterized in that: A wear-resistant block is installed on the sliding block, and the shovel base is in contact with the wear-resistant block.

4. A forming device with a bottom shovel base according to claim 3, characterized in that: The wear-resistant block is made of high-strength brass material.

5. The forming device with a bottom shovel base according to claim 1, characterized in that: A killing block is provided below the shovel base, and the killing block is fixedly connected to the lower template.

6. The forming device with a bottom shovel base according to claim 1, characterized in that: A guide block is installed on the lower template, and a guide groove is provided on the guide block; a convex block is arranged on the side end of the shovel base, and the convex block is slidably connected in the guide groove.

7. The forming device with a bottom shovel base according to claim 1, characterized in that: The lower template is installed with a lower pad, the lower pad is provided with a slide groove matched with the shovel base, and the shovel base is slidably connected in the slide groove.

8. The forming device with a bottom shovel base according to claim 1, characterized in that: A sliding rod is installed at the bottom of the shovel base, and a sliding hole matched with the sliding rod is opened on the lower template, and the sliding rod is slidably connected in the sliding hole.

9. The forming device with a bottom shovel base according to claim 1, characterized in that: A plurality of positioning blocks are installed on the stripping plate, and a positioning cavity is provided at the bottom of the positioning block.

10. The forming device with a bottom shovel base according to claim 1, characterized in that: A guide post is installed on the stripping plate, a guide hole matched with the guide post is opened on the upper template, and the guide post passes through the guide hole.

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