Center clamping device

Abstract

The utility model provides a center clamping device, which relates to the technical field of clamping equipment and comprises a mounting plate, and a driving component is arranged on the mounting plate. A first clamping piece and a second clamping piece are arranged below the mounting plate in a sliding mode, and a clamping position is formed between the first clamping piece and the second clamping piece in a clamping mode; the driving assembly is connected with the first clamping piece and drives the first clamping piece to move. The first clamping piece is connected with the linkage component, the linkage component is connected with the second clamping piece, and when the first clamping piece moves, the linkage component drives the second clamping piece to move synchronously, so that the first clamping piece and the second clamping piece conduct opening and closing clamping actions. The clamping device has the advantages that the distance between the first clamping piece and the second clamping piece is adjusted through the driving assembly, and the size of the clamping position is changed so as to adapt to clamping and machining of plates of different sizes; the first auxiliary wheel and the second auxiliary wheel both play a role in limiting and guiding, so that the first rack and the second rack move more stably.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping equipment, in particular to a central clamping device. Background Art

[0002] During the sheet processing process, the sheet needs to be fixed. Manual fixation or clamp fixation is a common method. Manually holding or stepping on the sheet to fix the sheet results in inaccurate placement and inconvenient adjustment, and unstable fixation, resulting in poor sheet processing results. The installation of clamp fixation is cumbersome and inefficient.

[0003] In the prior art, the technical scheme of the Chinese patent document (Announcement No.: CN206169674U, Patent Name: Plate Clamping Device) discloses "including a plate bracket and a clamping plate hinged to two opposite sides of the plate bracket, wherein a plurality of cylindrical abutting portions are provided on the clamping plate, and a power device for outputting rotational power to flip the clamping plate relative to the plate bracket is provided at one end of the plate bracket."

[0004] Combined with the description and drawings of the patent document, the clamping device outputs rotational power through a power device to rotate the clamping plate relative to the plate holder, and the clamping plate abuts against the plate to clamp the plate; however, in the patent structure, the distance between the clamping plates on both sides is fixed, and the clamping distance between the clamping plates cannot be changed arbitrarily according to the width of the plate, that is, it can only clamp plates of a fixed specification, and has poor compatibility; and in this structure, each clamping plate needs to be equipped with a power device for driving, which increases the production cost. Utility Model Content

[0005] The utility model overcomes the shortcomings of the prior art and provides a central clamping device. By adjusting the spacing between a first clamping piece and a second clamping piece, the size of the clamping position is changed to adapt to the clamping processing of plates of different sizes.

[0006] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0007] A central clamping device comprises a mounting plate, on which a driving assembly is arranged; a first clamping member and a second clamping member are slidingly arranged below the mounting plate, a clamping position is formed by clamping between the first clamping member and the second clamping member; the driving assembly is connected to the first clamping member to drive the first clamping member to move; the first clamping member is connected to a linkage component, which is connected to the second clamping member, and when the first clamping member moves, the second clamping member is driven to move synchronously through the linkage component, so that the first clamping member and the second clamping member perform an opening and closing clamping action.

[0008] Furthermore, the linkage component includes a first rack, which is connected above the first clamping member; the first rack is meshed with a gear, which is pivotally connected to the mounting plate, and the gear is meshed with a second rack, the first rack and the second rack are arranged in parallel, and the second rack is connected above the second clamping member.

[0009] Furthermore, sliders are provided on both sides above the first rack and the second rack, and the sliders are slidably connected to linear rails, which are fixed on the lower surface of the mounting plate.

[0010] Furthermore, the driving assembly includes a cylinder, the end of the piston rod of the cylinder is connected to a connecting piece, the connecting piece is connected to the upper end of the support seat, and the lower end of the support seat is connected to the first clamping piece.

[0011] Furthermore, a screw hole is provided at the end of the connecting piece, and a threaded section is formed at the end of the piston rod of the cylinder. The connecting piece is connected to the threaded section through the screw hole; and a limiting nut is threadedly connected to the threaded section.

[0012] Furthermore, the first clamping member and the second clamping member have the same structure; the first clamping member or the second clamping member includes a wide portion and a narrow portion, and the sliding block is fixedly arranged above the wide portion.

[0013] Furthermore, the mounting plate is provided with a clearance groove, and the support seat can slide in the clearance groove.

[0014] Furthermore, a first fixed plate and a second fixed plate are arranged under the mounting plate, the first fixed plate is provided with a plurality of first auxiliary wheels, and the second fixed plate is provided with a plurality of second auxiliary wheels; the arrangement direction of the plurality of first auxiliary wheels is the same as the sliding direction of the first rack, and the first auxiliary wheels are abutted against the side surface of the first rack; the arrangement direction of the plurality of second auxiliary wheels is the same as the sliding direction of the second rack, and the second auxiliary wheels are abutted against the side surface of the second rack.

[0015] Furthermore, the first clamping member is provided with a first avoidance position, and the second rack is matched with the first avoidance position; the second clamping member is provided with a second avoidance position, and the first rack is matched with the second avoidance position.

[0016] Furthermore, a cylinder fixing seat is arranged above the mounting plate, and the cylinder is arranged above the cylinder fixing seat; when the piston rod of the cylinder is pulled back, the first clamping member and the second clamping member are driven to clamp together.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The distance between the first clamping member and the second clamping member is adjusted by the driving component to change the size of the clamping position to adapt to the clamping processing of plates of different sizes, with stable clamping and good compatibility; the first rack is slidably connected to the side with a first auxiliary wheel, and the second rack is slidably connected to the side with a second auxiliary wheel, and the first auxiliary wheel and the second auxiliary wheel both play the role of limiting and guiding, so that the first rack and the second rack move more smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a general diagram of the central clamping device of the embodiment of the utility model;

[0021] Figure 2 This is a bottom view of the central clamping device of an embodiment of the utility model;

[0022] Figure 3 is a partial bottom view of the central clamping device of an embodiment of the utility model;

[0023] Figure 4 It is a partial front view of the central clamping device of the embodiment of the utility model;

[0024] Figure 5 This is a schematic diagram of a first clamping member and a sliding block in an embodiment of the utility model;

[0025] Figure 6 It is a schematic diagram of a mounting plate of an embodiment of the utility model;

[0026] Figure 7 It is a schematic diagram of a connecting piece and a supporting seat according to an embodiment of the utility model.

[0027] In the figure: 1-mounting plate, 101-avoidance groove, 2-driving assembly, 201-cylinder, 2011-limiting nut, 202-connecting piece, 2021-screw hole, 203-support seat, 204-first rack, 205-gear, 206-second rack, 207-slider, 208-linear rail, 3-first clamping member, 301-wide part, 302-narrow part, 303-first avoidance position, 4-second clamping member, 401-second avoidance position, 5-first fixing plate, 6-second fixing plate, 7-first auxiliary wheel, 8-second auxiliary wheel, 9-cylinder fixing seat. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0029] like Figure 1 to Figure 2 As shown, a central clamping device comprises a mounting plate 1, the mounting plate 1 is provided with a driving assembly 2, a first clamping member 3 and a second clamping member 4 are slidingly arranged below the mounting plate 1, a clamping position is formed by clamping between the first clamping member 3 and the second clamping member 4, and the workpiece is clamped in the clamping position; wherein the driving assembly 2 is connected to the first clamping member 3 to drive the first clamping member 3 to move; the first clamping member 3 is connected to a linkage component, and the linkage component is connected to the second clamping member 4, and when the first clamping member 3 moves, it will drive the second clamping member 4 to move synchronously through the linkage component, so that the first clamping member 3 and the second clamping member 4 perform an opening and closing clamping action; therefore, the clamping is performed in an opening and closing manner, so it is compatible with workpieces of different widths; and only one driving assembly 2 is needed to finally drive the first clamping member 3 and the second clamping member 4 to move, saving manufacturing costs.

[0030] The first clamping member 3 and the second clamping member 4 slide horizontally on the mounting plate 1, and the clamping position will become smaller as the first clamping member 3 and the second clamping member 4 approach each other, and will become larger as the first clamping member 3 and the second clamping member 4 move away from each other. Thus, by adjusting the distance between the first clamping member 3 and the second clamping member 4, the size of the clamping position can be changed to adapt to the clamping processing of plates of different sizes.

[0031] Specifically, Figures 1 to 4As shown, the driving assembly 2 includes a cylinder 201, and the end of the cylinder 201 is connected to a connecting member 202, and the connecting member 202 is connected to the upper end of the support seat 203, and the lower end of the support seat 203 is connected to the first clamping member 3; the linkage member includes a first rack 204, and the first rack 204 is connected above the first clamping member 3; the first rack 204 is meshedly connected to a gear 205, and the gear 205 is pivotally connected to the mounting plate 1, and the gear 205 is meshedly connected to the second rack 206, and the first rack 204 and the second rack 206 are arranged in parallel, and the second rack 206 is connected above the second clamping member 4; therefore, when the first clamping member 3 moves, the second rack 206 is finally driven to move by the first rack 204, the gear 205, and the second rack 206; sliders 207 are arranged on both sides above the first rack 204 and the second rack 206, and the slider 207 is slidably connected to a linear rail 208, and the linear rail 208 is fixed on the mounting plate 1, The contraction of the piston rod of the cylinder will push the support seat 203 to move inward through the connecting piece 202, and the support seat 203 will drive the first clamping member 3 and the first rack 204 to move inward. The movement of the first rack 204 will drive the gear 205 to rotate, and the gear 205 will drive the second rack 206 to move in the opposite direction of the movement of the first rack 204, thereby driving the second clamping member 4 to move, so that the first clamping member 3 and the second clamping member 4 are close to each other; conversely, the extension of the piston rod of the cylinder will push the support seat 203 to move outward through the connecting piece 202, and the support seat 203 will drive the first clamping member 3 and the first rack 204 to move outward. The movement of the first rack 204 will drive the gear 205 to rotate, and the gear 205 will drive the second rack 206 to move in the opposite direction of the movement of the first rack 204, thereby driving the second clamping member 4 to move, so that the first clamping member 3 and the second clamping member 4 are separated from each other, and the clamping of the workpiece is released.

[0032] A cylinder fixing seat 9 is arranged above the mounting plate 1, and the cylinder 201 is arranged above the cylinder fixing seat 9. The cylinder fixing seat 9 supports and fixes the cylinder 201; and the piston rod of the cylinder 201 is pulled back, which will drive the first clamping member 3 and the second clamping member 4 to clamp together.

[0033] The first clamping member 3 is provided with a first avoidance position 303, and the second rack 206 corresponds to and matches the first avoidance position 303. The second clamping member 4 is provided with a second avoidance position 401, and the first rack 204 corresponds to and matches the second avoidance position 401. When the first rack 204 and the second rack 206 move relative to each other, the second rack 206 will slide accordingly at the first avoidance position 303, and the first rack 204 will slide accordingly at the second avoidance position 401. On the one hand, it will not hinder the movement of the first rack 204 and the second rack 206, and on the other hand, it will make the structure more compact.

[0034] A first fixing plate 5 and a second fixing plate 6 are arranged below the mounting plate 1. The first fixing plate 5 is provided with a plurality of first auxiliary wheels 7, and the second fixing plate 6 is provided with a plurality of second auxiliary wheels 8. The arrangement direction of the plurality of first auxiliary wheels 7 is the same as the sliding direction of the first rack 204, and the first auxiliary wheels 7 are abutted against the side surface of the first rack 204; the arrangement direction of the plurality of second auxiliary wheels 8 is the same as the sliding direction of the second rack 206, and the second auxiliary wheels 8 are abutted against the side surface of the second rack (206); the above arrangement method and abutment setting can enable the first auxiliary wheels 7 and the second auxiliary wheels 8 to respectively play a role of limiting and guiding the first rack 204 and the second rack 206, so that the first rack 204 and the second rack 206 move more smoothly.

[0035] like Figure 5 As shown, the first clamping member 3 and the second clamping member 4 have the same structure. The first clamping member 3 or the second clamping member 4 includes a wide portion 301 and a narrow portion 302. The wide portion 301 and the narrow portion 302 are connected to form a 7 shape; the slider 207 is fixedly arranged above the wide portion 301. This design combines the advantages of a wide splint and a narrow splint. Since the wide portion 301 is subjected to greater force, more material is used and the size is wide. The narrow portion 3021 is subjected to less force, so less material is used. The above design is targeted at specific forces and effectively saves material costs.

[0036] like Figure 6 As shown, the mounting plate 1 is provided with a void-avoiding groove 101 , and the support seat 203 can be slidably inserted in the void-avoiding groove 101 . When the support seat 203 moves, it will slide accordingly in the void-avoiding groove 101 .

[0037] like Figure 7 As shown, a screw hole 2021 is provided at the end of the connecting member 202, and a threaded section is formed at the end of the piston rod of the cylinder 201. The connecting member 202 is connected to the threaded section through the screw hole 2021, and then the connecting member 202 is fixed to the upper end of the support seat 203; the threaded connection method is adopted, which is convenient for assembly and disassembly; and because the lower end of the support seat 203 is connected to the first clamping member 3, the installation depth of the connecting member 202 on the threaded section can be adjusted through the threaded connection method, so as to achieve the purpose of fine-tuning the clamping strength of the first clamping member 3 and the second clamping member 4; a limiting nut (2011) is threadedly connected on the threaded section, and the limiting nut (2011) limits the screwing depth of the connecting member 202 on the threaded section.

[0038] The working principle of the utility model is as follows: the plate is placed on the clamping position, and a driving component is used to drive the first clamping member 3 and the second clamping member 4 to approach each other, and the two sides of the plate are clamped, so as to clamp and fix the plate; when it is necessary to release, the driving component can be used to drive the first clamping member 3 and the second clamping member 4 to move away from each other, and release the clamping state.

[0039] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A center clamping device, characterized in that: The invention comprises a mounting plate (1), on which a driving assembly (2) is arranged; a first clamping member (3) and a second clamping member (4) are slidably arranged below the mounting plate (1), and a clamping position is formed by clamping between the first clamping member (3) and the second clamping member (4); the driving assembly (2) is connected to the first clamping member (3) to drive the first clamping member (3) to move; the first clamping member (3) is connected to a linkage member, and the linkage member is connected to the second clamping member (4), and when the first clamping member (3) moves, the linkage member drives the second clamping member (4) to move synchronously, so that the first clamping member (3) and the second clamping member (4) perform an opening and closing clamping action.

2. A center clamping device according to claim 1, characterized in that: The linkage component comprises a first rack (204), the first rack (204) being connected above the first clamping member (3); the first rack (204) being meshedly connected with a gear (205), the gear (205) being pivotally connected to the mounting plate (1), the gear (205) being meshedly connected with a second rack (206), the first rack (204) and the second rack (206) being arranged in parallel, and the second rack (206) being connected above the second clamping member (4).

3. A center clamping device according to claim 2, characterized in that: Slide blocks (207) are provided on both sides above the first rack (204) and the second rack (206), and the slide blocks (207) are slidably connected to linear rails (208), which are fixed on the lower surface of the mounting plate (1).

4. A center clamping device according to any one of claims 1 to 3, characterized in that: The driving assembly (2) comprises a cylinder (201), the end of the piston rod of the cylinder (201) is connected to a connecting piece (202), the connecting piece (202) is connected to the upper end of a support seat (203), and the lower end of the support seat (203) is connected to the first clamping piece (3).

5. A center clamping device according to claim 4, characterized in that: The end of the connecting piece (202) is provided with a screw hole (2021), the end of the piston rod of the cylinder (201) forms a threaded section, and the connecting piece (202) is connected to the threaded section through the screw hole (2021); the threaded section is threadedly connected to a limiting nut (2011).

6. A center clamping device according to claim 2, characterized in that: The first clamping member (3) and the second clamping member (4) have the same structure; the first clamping member (3) or the second clamping member (4) comprises a wide portion (301) and a narrow portion (302), and the sliding block (207) is fixedly arranged above the wide portion (301).

7. A center clamping device according to claim 4, characterized in that: The mounting plate (1) is provided with a clearance groove (101), and the support seat (203) can slide in the clearance groove (101).

8. A center clamping device according to claim 2, characterized in that: A first fixing plate (5) and a second fixing plate (6) are arranged below the mounting plate (1); the first fixing plate (5) is provided with a plurality of first auxiliary wheels (7), and the second fixing plate (6) is provided with a plurality of second auxiliary wheels (8); the arrangement direction of the plurality of first auxiliary wheels (7) is the same as the sliding direction of the first rack (204), and the first auxiliary wheels (7) are in contact with the side surface of the first rack (204); the arrangement direction of the plurality of second auxiliary wheels (8) is the same as the sliding direction of the second rack (206), and the second auxiliary wheels (8) are in contact with the side surface of the second rack (206).

9. A center clamping device according to claim 2, characterized in that: The first clamping member (3) is provided with a first clearance position (303), and the second rack (206) corresponds to and matches the first clearance position (303); the second clamping member (4) is provided with a second clearance position (401), and the first rack (204) corresponds to and matches the second clearance position (401).

10. A center clamping device according to claim 2, characterized in that: A cylinder fixing seat (9) is arranged above the mounting plate (1), and the cylinder (201) is arranged above the cylinder fixing seat (9); when the piston rod of the cylinder (201) is pulled back, it will drive the first clamping member (3) and the second clamping member (4) to clamp together.

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