A stamping equipment for sofa connectors

Abstract

The utility model belongs to the technical field of sofa manufacturing equipment, and in particular to a stamping device for sofa connectors. The utility model provides a stamping device for sofa connectors, which can be arranged on a table panel by a cylinder mounting cross plate, a cylinder, a reinforcement opening, a tensile screw connection unit, a fixed plate unit, and a lifting plate unit, so that: 1. The tensile screw connection unit can reinforce the cylinder mounting cross plate, allowing the cylinder to output a greater pressure; 2. The concave die on the fixed plate unit and the convex die on the lifting plate unit have sufficient installation stability and suitable disassembly and assembly difficulty, and the stamping device is convenient for switching stamping shapes.

Description

Technical Field

[0001] The utility model belongs to the technical field of sofa manufacturing equipment, in particular to a punching equipment for sofa connectors. Background Art

[0002] Generally, metal connectors are used in the manufacturing process of sofas made of metal materials. Common metal connectors, such as L-shaped connectors and U-shaped connectors, are produced by cutting, stamping, punching and grinding. In the above stamping process, stamping equipment is used.

[0003] The conventional stamping process is operated as follows: the die is installed on the table, the punch is installed on the cylinder, the metal sheet is placed on the die, and then the cylinder is pressed down to obtain the required shape of the connector on the metal sheet. At this time, the metal sheet is the connector blank.

[0004] Correspondingly, the most basic structural components of existing common stamping equipment mainly include: a base frame, a mounting frame, and a cylinder. The above three combined with a concave and convex mold can achieve basic metal sheet stamping effects.

[0005] For example, a Chinese utility model patent with authorization announcement number CN219851661U and authorization announcement date 2023.10.20 discloses a sofa connector stamping device, including a frame, a stamping die is provided on the frame, a press is provided above the stamping die, an impact seat is provided at the output end of the press, the stamping die includes an upper die and a lower die, and telescopic rods and reset springs are provided at both ends between the upper die and the lower die; the lower die includes two bases distributed parallel to the left and right, a slot is provided in the middle position of the base, a rotating shaft passing through the base is provided in the middle of the slot, a mold seat with a rectangular structure is provided on the rotating shaft, and stamping grooves are provided on the four long side sides of the mold seat; a rotating gear located outside the base is provided at the outer end of the rotating shaft, a driving gear is meshed on the rotating gear, and the driving gear is connected to a driving motor.

[0006] The general structural principle and advantages of the stamping equipment in this utility model patent are as follows: the lower die is improved by providing a rotating die seat on the lower die, and a stamping groove matching the upper die is provided on each long side of the die seat. The stamping surface of the L-shaped sofa connector can be flexibly adjusted without the need for workers to replace the stamping surface, thereby effectively improving the stamping efficiency, reducing the number of times workers come into contact with the stamping equipment, and improving the safety of workers operating the machine.

[0007] However, in actual use, the stamping equipment still has at least the following two shortcomings, which are also the technical problems to be solved by the utility model, namely:

[0008] 1. The mounting frame is in a simple inverted U shape without any additional reinforcement structure. Therefore, when the press exerts a large downward force, the mounting frame is relatively easy to break.

[0009] 2. The upper die and lower die structures lack dedicated fixing parts with sufficient installation stability and moderate difficulty in disassembly and assembly. Therefore, at least the upper die and lower die are not convenient to replace, which greatly reduces the practicality of the stamping equipment.

[0010] Therefore, in summary, there is an urgent need for a new type of stamping equipment with a mounting frame reinforcement function and a mold convenient for disassembly and replacement, so as to be used in the production of various connectors required for metal sofas. Utility Model Content

[0011] The utility model provides a punching device for sofa connectors, which can be arranged on a table panel by a cylinder mounting horizontal plate, a cylinder, a reinforcement opening, a tensile screw connection unit, a fixing plate unit, and a lifting plate unit, so that:

[0012] 1. The tensile screw connection unit can reinforce the cylinder mounting cross plate, allowing the cylinder to output a higher pressure;

[0013] 2. The concave die is on the fixed plate unit, and the punch is on the lifting plate unit, both of which have sufficient installation stability and appropriate disassembly and assembly difficulty. The stamping equipment is convenient for switching stamping shapes.

[0014] The technical solution adopted by the utility model to solve the above-mentioned problem is: a stamping device for sofa connecting parts, the structure includes a table panel, a cylinder mounting cross plate, and a cylinder, and also includes reinforcement openings arranged on the table panel and the cylinder mounting cross plate, a tensile screw connection unit inserted in the reinforcement opening and used to reinforce the cylinder mounting cross plate on the table panel, a fixed plate unit arranged on the upper surface of the table panel, sleeved with the tensile screw connection unit, and used for sliding installation of a die, and a lifting plate unit arranged on the cylinder, sleeved with the tensile screw connection unit, and used for inserting and installing a convex die.

[0015] A further preferred technical solution is that two reinforcement openings are provided on the table panel and the cylinder mounting transverse plate.

[0016] A further preferred technical solution is that the tensile screw connection unit includes a vertical screw rod inserted into the two reinforcement openings on the same side, and a limiting nut arranged on the vertical screw rod and used to clamp the lower surface of the table panel or the upper surface of the cylinder mounting horizontal plate.

[0017] A further preferred technical solution is that: the vertical screw rod is provided with a circular ring surface middle section for sleeve-connecting the fixed plate unit and the lifting plate unit.

[0018] A further preferred technical solution is that at least two of the limit nuts are provided at a single end position on the vertical screw rod.

[0019] A further preferred technical solution is that the fixed plate unit includes a lower plate arranged on the upper surface of the table panel, a mounting hole arranged on the lower plate and used to pass the vertical screw, and a side groove arranged on the upper surface and side of the lower plate and used for sliding installation of the die.

[0020] A further preferred technical solution is that the fixed plate unit further comprises a side slot provided on the upper surface and the side surface of the lower plate and used for ejecting the die outward from the side slot.

[0021] A further preferred technical solution is that the lifting plate unit includes an upper plate arranged on the cylinder, a limiting hole arranged on the upper plate and used to pass the vertical screw, and a snap-fit ​​groove arranged on the lower surface of the upper plate and used to install the punch.

[0022] A further preferred technical solution is that the lifting plate unit also includes a perforated plate arranged on the lower surface of the upper plate, and a transverse screw arranged on the perforated plate and used for clamping the side surface of the punch.

[0023] A further preferred technical solution is that the lifting plate unit further includes an elastic clamping block arranged on the transverse screw rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the utility model.

[0025] Figure 2 It is a schematic diagram of the positions of the reinforcement openings in the utility model.

[0026] Figure 3 It is a schematic diagram of the position structure of the tensile screw connection unit in the utility model.

[0027] Figure 4 It is a structural schematic diagram of the vertical screw in the utility model.

[0028] Figure 5 It is a schematic diagram of the structure of the fixed plate unit in the utility model from a top view.

[0029] Figure 6 It is a schematic diagram of the method of using the transverse screw in the utility model.

[0030] Figure 7 It is a structural schematic diagram of the lifting plate unit in the utility model when viewed from an upward angle.

[0031] In the figure, the meanings of the symbols are as follows:

[0032] Concave die a, convex die b;

[0033] Table panel 11, cylinder mounting horizontal plate 12, cylinder 13, table support legs 14, cylinder mounting vertical plate 15;

[0034] Reinforcement opening 1, tensile bolt connection unit 2, fixing plate unit 3, lifting plate unit 4;

[0035] Vertical screw 201, limiting nut 202, annular middle section 201a, end threaded section 201b, lower plate 301, mounting hole 302, side slot 303, opposite side slot 304, upper plate 401, limiting hole 402, engaging slot 403, perforated plate 404, transverse screw 405, elastic clamping block 406. DETAILED DESCRIPTION

[0036] The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

[0037] As attached Figure 1-7 As shown, a stamping device for sofa connectors comprises a table panel 11, a cylinder mounting cross plate 12, and a cylinder 13, and also comprises a reinforcement opening 1 arranged on the table panel 11 and the cylinder mounting cross plate 12, a tensile screw connection unit 2 inserted in the reinforcement opening 1 and used for reinforcing the cylinder mounting cross plate 12 on the table panel 11, a fixed plate unit 3 arranged on the upper surface of the table panel 11, sleeved with the tensile screw connection unit 2, and used for slidingly installing a die a, and a lifting plate unit 4 arranged on the cylinder 13, sleeved with the tensile screw connection unit 2, and used for inserting and installing a punch b.

[0038] In this embodiment, the table panel 11, the cylinder mounting horizontal plate 12, the table legs 14, the cylinder mounting vertical plate 15, the tensile bolt unit 2, the fixing plate unit 3, and the lifting plate unit 4 are mainly made of steel, and the shape of the reinforcement opening 1 is circular.

[0039] The method of using the stamping equipment is generally as follows: first, place the metal sheet on the die a, then start the cylinder 13, and then move the punch b downward until the corresponding deformation contour is pressed out on the metal sheet, and then the cylinder 13 is reset upward. At this time, the sofa connector blank may be stuck on the die a, the punch b, or may have fallen on the table top 11. At this point, a complete stamping operation is basically completed.

[0040] The mold replacement method of the stamping equipment is generally as follows: first, slide and push out the previous die a on the fixed plate unit 3, then slide and push in the new die a, then release the clamping state of the previous punch b on the lifting plate unit 4 to make it fall into the hands of the operator, then insert and install the new punch b on the lifting plate unit 4, and finally retighten the mold clamping structure on the lifting plate unit 4.

[0041] Finally, the tensile bolt connection unit 2 is used to reinforce the cylinder mounting horizontal plate 12 and the cylinder mounting vertical plate 15 which are originally simple inverted U-shaped styles, so that the cylinder 13 can safely output a larger downward force and ensure that the inverted U-shaped structure is not easy to break.

[0042] The table panel 11 and the cylinder mounting transverse plate 12 are both provided with two reinforcement openings 1 .

[0043] In this embodiment, there is a pair of vertically aligned reinforcement openings 1 on both sides of the cylinder 13, so that the tensile bolt connection unit 2 can fully hold the cylinder mounting cross plate 12 which has the greatest "fracture tendency".

[0044] The tensile screw connection unit 2 includes a vertical screw rod 201 inserted into the two reinforcing openings 1 on the same side, and a limiting nut 202 arranged on the vertical screw rod 201 and used to clamp the lower surface of the table panel 11 or the upper surface of the cylinder mounting cross plate 12.

[0045] In this embodiment, the vertical screw rod 201 and the reinforcement opening 1 , the fixing plate unit 3 , and the lifting plate unit 4 are only required to be connected by sleeves.

[0046] In addition, the limiting nut 202 can also be matched with a size-enlarging ring to prevent it from generating excessive pressure on the table panel 11 and the cylinder mounting cross plate 12.

[0047] The vertical screw rod 201 is provided with a circular ring surface middle section for sleeve-engaging the fixed plate unit 3 and the lifting plate unit 4 .

[0048] In this embodiment, the structure of the vertical screw rod 201 is essentially: a round rod with partial threaded sections opened inward from both ends, and the length of the end threaded section 201b is sufficient to ensure that the limiting nut 202 is sufficiently tightened.

[0049] The diameter of the annular surface middle section 201a is as large as possible to ensure that the fixed plate unit 3 and the lifting plate unit 4 are not deviated significantly on the annular surface middle section 201a as much as possible.

[0050] At least two limiting nuts 202 are disposed at a single end of the vertical screw rod 201 .

[0051] In this embodiment, the total number of the limiting nuts 202 is 8. The limiting nuts 202 that are clamped together in pairs can provide a more stable clamping and limiting effect for the table panel 11 or the cylinder mounting cross plate 12.

[0052] Of course, when the limiting nut 202 is initially adjusted and reinforced, it cannot bend the cylinder mounting cross plate 12 downward, so that it can fully and appropriately resist the cylinder mounting cross plate 12.

[0053] The fixed plate unit 3 includes a lower plate 301 arranged on the upper surface of the table panel 11, a mounting hole 302 arranged on the lower plate 301 and used to pass the vertical screw 201, and a side groove 303 arranged on the upper surface and side of the lower plate 301 and used for slidingly mounting the die a.

[0054] In this embodiment, the fixed plate unit 3 and the lifting plate unit 4 are both rectangular in shape, and the opening of the side slot 303 faces one side, which is the operating side of the stamping device, that is, the front side.

[0055] In addition, the shape of the side slot 303 is also rectangular, which correspondingly requires that the die a has one side of equal length, so as to ensure that the die a can only slide in and out of the side slot 303 and is not easily shifted left or right.

[0056] The fixed plate unit 3 further includes a side slot 304 disposed on the upper surface and the side surface of the lower plate 301 and used for ejecting the die a from the side slot 303 to the outside.

[0057] In this embodiment, the word "different side" means that the opening of the different side slot 304 faces the back of the device. When the thickness of the die a is greater than the depth of the side slot 303, the different side slot 304 is not needed, and the convex upper edge of the die a can be pushed forward to be easily removed.

[0058] When the thickness of the die a is smaller than the depth of the side slot 303 , a thin rod-shaped object or the operator's finger can be inserted into the opposite side slot 304 , so that the die a can be easily taken out.

[0059] In addition, the downward groove depth of the opposite-side groove 304 may be less than or equal to the depth of the side groove 303 .

[0060] The lifting plate unit 4 includes an upper plate 401 arranged on the cylinder 13, a limiting hole 402 arranged on the upper plate 401 and used to pass the vertical screw 201, and a snap-fit ​​groove 403 arranged on the lower surface of the upper plate 401 and used to install the punch b.

[0061] In this embodiment, the length and width of the engaging groove 403 correspond to the length and width of the punch b. In other words, when the punching device replaces the die, at least the length and width of the die cannot be changed.

[0062] The lifting plate unit 4 further includes a perforated plate 404 disposed on the lower surface of the upper plate 401, and a transverse screw 405 disposed on the perforated plate 404 and used for clamping the side surface of the punch b.

[0063] In this embodiment, the transverse screw 405 is used to clamp the side of the punch b, so it will not affect the normal mold stamping effect.

[0064] In addition, the vertical dimension of the perforated plate 404 is relatively small, ensuring that it will not hit the lower plate 301 during normal stamping operation.

[0065] The lifting plate unit 4 further includes an elastic clamping block 406 disposed on the transverse screw rod 405 .

[0066] In this embodiment, the elastic clamping block 406 is made of ordinary rubber, which is bonded to the transverse screw 405, and can generate a large static friction force on the side of the punch b, so that the punch b is not easy to fall off when it is raised and lowered with the cylinder 13.

[0067] In addition, when the transverse screws 405 rotate away from each other, the punch b can automatically fall off from the engaging groove 403.

[0068] The above is a detailed description of the implementation of the utility model in conjunction with the accompanying drawings, but the utility model is not limited to the above implementation. Various modifications can be made within the knowledge of ordinary technicians in the technical field without departing from the purpose of the utility model. These are all non-creative modifications and are protected by patent law as long as they are within the scope of the claims of the utility model.

Claims

1. A punching device for a sofa connector, comprising a table top (11), a cylinder mounting cross plate (12), and a cylinder (13), characterized in that: It also includes a reinforcement opening (1) arranged on the table panel (11) and the cylinder mounting cross plate (12), a tensile screw connection unit (2) inserted into the reinforcement opening (1) and used to reinforce the cylinder mounting cross plate (12) on the table panel (11), a fixed plate unit (3) arranged on the upper surface of the table panel (11), sleeved with the tensile screw connection unit (2), and used for slidingly mounting a die (a), and a lifting plate unit (4) arranged on the cylinder (13), sleeved with the tensile screw connection unit (2), and used for inserting a mounting convex die (b).

2. The punching equipment for sofa connectors according to claim 1, characterized in that: The table panel (11) and the cylinder mounting transverse plate (12) are both provided with two reinforcement openings (1).

3. The punching equipment for sofa connectors according to claim 2, characterized in that: The tensile screw connection unit (2) comprises a vertical screw rod (201) inserted into two reinforcement openings (1) on the same side, and a limiting nut (202) arranged on the vertical screw rod (201) and used to clamp the lower surface of the table panel (11) or the upper surface of the cylinder mounting horizontal plate (12).

4. The punching equipment for sofa connectors according to claim 3, characterized in that: The vertical screw rod (201) is provided with a circular ring surface middle section for sleeve-connecting the fixed plate unit (3) and the lifting plate unit (4).

5. The punching equipment for sofa connectors according to claim 3, characterized in that: At least two limiting nuts (202) are provided at a single end position on the vertical screw rod (201).

6. The punching equipment for sofa connectors according to claim 3, characterized in that: The fixed plate unit (3) comprises a lower plate (301) arranged on the upper surface of the table panel (11), a mounting hole (302) arranged on the lower plate (301) and used to pass the vertical screw (201), and a side slot (303) arranged on the upper surface and side surface of the lower plate (301) and used to slide and install the concave mold (a).

7. The punching equipment for sofa connectors according to claim 6, characterized in that: The fixed plate unit (3) further comprises a side slot (304) arranged on the upper surface and the side surface of the lower plate (301) and used for ejecting the die (a) from the inside of the side slot (303) to the outside.

8. The punching equipment for sofa connectors according to claim 3, characterized in that: The lifting plate unit (4) comprises an upper plate (401) arranged on the cylinder (13), a limiting hole (402) arranged on the upper plate (401) and used for passing the vertical screw (201), and a snap-fit ​​groove (403) arranged on the lower surface of the upper plate (401) and used for installing a punch (b).

9. The punching equipment for sofa connectors according to claim 8, characterized in that: The lifting plate unit (4) further comprises a perforated plate (404) arranged on the lower surface of the upper plate (401), and a transverse screw (405) arranged on the perforated plate (404) and used for clamping the side of the punch (b).

10. The punching equipment for sofa connectors according to claim 9, characterized in that: The lifting plate unit (4) further comprises an elastic clamping block (406) arranged on the transverse screw rod (405).

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