Clamp for metal plate spraying

Abstract

The utility model discloses a clamp for metal plate spraying. The clamp for metal plate spraying comprises a base and at least one clamping piece installed on the base through a support. The clamping piece comprises a positioning pipe, a plurality of arc plates are arranged in the positioning pipe in the circumferential direction, and the ends, back on to the base, of the arc plates protrude out of the positioning pipe. Conical cambered surfaces are arranged on the inner sides of the ends, facing the base, of the arc plates, and a conical hole coaxial with the positioning pipe is defined by the multiple conical cambered surfaces; an extrusion column is arranged at the end, facing the base, of the clamping piece and connected with a conical column which is matched with the conical hole and used for expanding the conical hole. The base is provided with a driving mechanism for pushing the conical column to stretch into or draw out of the conical hole, and the arc plate is elastically connected with the side face of the positioning pipe. The clamp for sheet metal spraying can clamp and fix a sheet metal part with a hole at the hole position, and spraying operation on the sheet metal part is facilitated.

Description

Technical Field

[0001] The utility model relates to a spraying fixture, in particular to a fixture for sheet metal spraying. Background Art

[0002] Sheet metal parts are products processed by sheet metal technology, and they are indispensable in our lives. Sheet metal parts are made by filament power winding, laser cutting, heavy processing, metal bonding, metal drawing, plasma cutting, precision welding, roll forming, metal sheet bending, die forging, and water jet cutting. Of course, sheet metal parts also need to be sprayed in the later stage, such as spraying a protective layer or spraying a decorative paint surface, so how to improve the spraying effect is a technical problem that needs to be solved at present.

[0003] In the spraying operation of sheet metal parts, it is inevitable to use a spraying fixture. For example, in the prior art, Chinese patent CN201811339177.9 discloses a pot spraying process and a pot spraying production line that can eliminate the spraying intersection edge. In this patent, the pot to be sprayed is fixed on the suction part of the pot spraying fixture for spraying. When there is a surface of the sprayed sheet metal part such as Figure 5 When the hole body is shown, it is difficult to use this method for suction and fixation due to air leakage in the hole body. Therefore, there is an urgent need for a clamp for clamping a sheet metal part with a hole body. Utility Model Content

[0004] The utility model aims to provide a clamp for sheet metal spraying, which can clamp and fix sheet metal parts with holes at the hole positions, so as to facilitate the spraying operation on the sheet metal parts.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a clamp for sheet metal spraying, comprising a base and at least one clamping member installed on the base through a bracket; the clamping member comprises a positioning tube, a plurality of arc plates are arranged circumferentially inside the positioning tube, and a plurality of the arc plates are arranged at one end protruding from the positioning tube facing away from the base; a conical arc surface is arranged on the inner side of an end of the arc plate facing the base, and a plurality of the conical arc surfaces enclose a conical hole coaxial with the positioning tube; an extrusion column is arranged at the end of the clamping member facing the base, and the extrusion column is connected to a conical column that cooperates with the conical hole and is used to expand the conical hole; a driving mechanism for pushing the conical column to extend into or out of the conical hole is arranged on the base, and the arc plate is elastically connected to the side of the positioning tube.

[0006] Preferably, a limiting portion is provided at one end of the arc plate facing away from the base, and an inclined stop surface is provided on the outer side of the limiting portion.

[0007] Preferably, a plurality of side fixing blocks corresponding to the arc plate are arranged on the outer side of the positioning tube; at least two spring grooves arranged along the axial direction parallel to the positioning tube are arranged on the side of the side fixing block facing the positioning tube; a return spring is arranged in the spring groove, and a movable column connected to the return spring is slidably inserted into the spring groove; the movable column passes through the side hole provided on the positioning tube and is connected to the arc plate.

[0008] Preferably, at least one arc reinforcing rod is arranged between two adjacent side fixing blocks.

[0009] Preferably, the bracket includes a plurality of vertical rods, and two ends of the vertical rods are respectively connected to the side fixing blocks and the base.

[0010] Preferably, both ends of the side fixing block are connected to the outer wall of the positioning tube through fixing plates.

[0011] Preferably, when the number of the clamping members is greater than two, a connecting plate is provided between two adjacent clamping members.

[0012] Preferably, the driving mechanism comprises a cylinder mounted on the base, and the shaft of the cylinder passes through the base and is connected to the extrusion column through a linkage plate.

[0013] Preferably, a plurality of positioning columns are arranged on one end of the base facing the clamping member, and a positioning block is arranged at the end of each positioning column.

[0014] Preferably, a plurality of connecting columns are provided on one end of the base facing away from the clamping member, and the ends of the connecting columns are connected to a mounting plate, and a plurality of mounting holes are provided on the mounting plate.

[0015] According to the above technical scheme, the utility model provides a clamp for sheet metal spraying, comprising a base and at least one clamping member installed on the base through a bracket; the clamping member comprises a positioning tube, a plurality of arc plates are arranged circumferentially inside the positioning tube, and a plurality of the arc plates are protruded from the positioning tube at one end facing away from the base; a conical arc surface is arranged on the inner side of an end of the arc plate facing the base, and a plurality of the conical arc surfaces enclose a conical hole coaxial with the positioning tube; an extrusion column is arranged at the end of the clamping member facing the base, and the extrusion column is connected to a conical column that cooperates with the conical hole and is used to expand the conical hole; a driving mechanism for pushing the conical column to extend into or out of the conical hole is arranged on the base, and the arc plate is elastically connected to the side of the positioning tube.

[0016] The method of using the clamp for sheet metal spraying is as follows: first, the parts of the multiple arc plates on the clamping part that protrude from the positioning tube are inserted into the holes on the corresponding sheet metal parts, so that the sheet metal parts are against the end faces of the positioning tubes. After being assembled in place, the tapered holes are driven by the driving mechanism to move toward the tapered holes. Since the arc plates and the side faces of the positioning tubes are elastically connected, when the outer side faces of the tapered columns are squeezed with the tapered arc faces, the arc plates expand outwards, so that the outer side faces of the arc plates are pressed against the inner side faces of the holes, thereby achieving the clamping of the sheet metal parts.

[0017] The sheet metal spraying fixture can clamp and fix sheet metal parts with holes at the hole positions. Through this clamping method, the deficiency of the prior art that it is difficult to use negative pressure adsorption to grasp sheet metal parts with holes for spraying is overcome, thereby facilitating the spraying operation of sheet metal parts with holes.

[0018] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of a clamp for sheet metal spraying;

[0021] Figure 2 It is a front structural schematic diagram of a preferred embodiment of a clamp for sheet metal spraying;

[0022] Figure 3 yes Figure 2 AA cross-sectional structural diagram;

[0023] Figure 4 yes Figure 3 A schematic diagram of the local enlarged structure of the B area in the middle;

[0024] Figure 5 It is a sheet metal part that can be clamped by a clamp for sheet metal spraying.

[0025] Description of Reference Numerals

[0026] 1-Mounting plate; 2-Mounting hole; 3-Connecting column; 4-Cylinder; 5-Axis body; 6-Base; 7-Vertical rod; 8-Linkage plate; 9-Side fixing block; 10-Arc reinforcing rod; 11-Positioning tube; 12-Positioning column; 13-Positioning block; 14-Limiting part; 15-Connecting plate; 16-Conical column; 17-Cylindrical hole; 18-Extrusion column; 19-Fixed plate; 20-Arc plate; 21-Conical hole; 22-Movable column; 23-Spring slot; 24-Reset spring; 25-Sheet metal; 26-Hole body. DETAILED DESCRIPTION

[0027] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0028] In the present utility model, unless otherwise stated, directional words contained in terms such as "up, down, left, right, front, back, inside, outside" merely represent the orientation of the terms in normal usage, or are common names understood by those skilled in the art, and should not be regarded as limitations on the terms.

[0029] See also Figure 1-4 The sheet metal spraying fixture shown includes a base 6 and at least one clamping member installed on the base 6 through a bracket; the clamping member includes a positioning tube 11, and a plurality of arc plates 20 are circumferentially arranged inside the positioning tube 11, and the plurality of arc plates 20 are arranged so as to protrude from the positioning tube 11 at one end facing away from the base 6; a conical arc surface is arranged on the inner side of the end of the arc plate 20 facing the base 6, and the plurality of conical arc surfaces enclose a conical hole 21 coaxial with the positioning tube 11; an extrusion column 18 is arranged at the end of the clamping member facing the base 6, and the extrusion column 18 is connected to a conical column 16 that cooperates with the conical hole 21 and is used to expand the conical hole 21; a driving mechanism for pushing the conical column 16 to extend into or out of the conical hole 21 is arranged on the base 6, and the arc plate 20 is elastically connected to the side of the positioning tube 11.

[0030] Through the implementation of the above technical solution, when the sheet metal spraying fixture is used, first, the parts of the multiple arc plates 20 on the clamping member protruding from the positioning tube 11 are inserted into the corresponding hole body 26 on the sheet metal 25, so that the sheet metal 25 is against the end face of the positioning tube 11. After being assembled in place, the tapered hole 21 is driven by the driving mechanism to move toward the tapered hole 21. Since the arc plate 20 is elastically connected to the side of the positioning tube 11, when the outer side of the conical column 16 and the conical arc surface are squeezed, the arc plate 20 expands outward, so that the outer side of the arc plate 20 is pressed against the inner side of the hole body 26, thereby clamping the sheet metal 25. The sheet metal spraying fixture can clamp and fix the sheet metal 25 with holes at the hole position. Through this clamping method, the disadvantage of the prior art that it is difficult to use negative pressure adsorption to grasp the sheet metal 25 with holes for spraying is overcome, thereby facilitating the spraying operation of the sheet metal 25 with holes.

[0031] When the arc plate 20 is in a normal state, the outer end of the sheet metal spraying fixture is formed into a cylindrical hole 17, and the inner end is formed into a tapered hole 21. The outer end diameter of the tapered hole 21 is a, the small end diameter of the tapered column 16 is b, and the large end diameter of the tapered column 16 is c. In order for the tapered column 16 to smoothly squeeze the arc plate 20 outward, b<a<c should be maintained.

[0032] In this embodiment, a limiting portion 14 is provided at one end of the arc plate 20 facing away from the base 6, and an inclined stop surface is provided on the outer side of the limiting portion 14. That is, the outer side of the limiting portion 14 is arranged to extend outwardly along the radial direction, and when the outer side of the arc plate 20 is clamped at the opening of the hole 26, the outwardly extending portion of the limiting portion 14 can limit the sheet metal part 25 from slipping outward.

[0033] In this embodiment, in order to further provide an elastic connection mode between the arc plate 20 and the positioning tube 11, a plurality of side fixing blocks 9 corresponding to the arc plates 20 are arranged on the outer side of the positioning tube 11; the side of the side fixing block 9 facing the positioning tube 11 is provided with at least two spring grooves 23 arranged parallel to the axial direction of the positioning tube 11; a return spring 24 is arranged in the spring groove 23, and a movable column 22 connected to the return spring 24 is slidably inserted in the spring groove 23; the movable column 22 passes through the side hole provided on the positioning tube 11 and is connected to the arc plate 20. When in use, when the plurality of arc plates 20 arranged in the circumferential direction are squeezed, the movable column 22 connected to the arc plate 20 presses the return spring 24 arranged in the spring groove 23, so that the return spring 24 is squeezed. The sliding cooperation between the movable column 22, the side hole and the spring groove 23 can play a role of radial guidance, so that the arc plate 20 only moves along the radial direction of the positioning tube 11, and does not move along the axial direction of the positioning tube 11.

[0034] In this embodiment, at least one arc reinforcing rod 10 is arranged between two adjacent side fixing blocks 9. The arrangement of the arc reinforcing rod 10 further increases the stability between the two adjacent side fixing blocks 9. For example, in one embodiment, two arc reinforcing rods 10 are arranged between two adjacent side fixing blocks 9, which are arranged at the upper end and the lower end of the side fixing block 9, respectively.

[0035] In this embodiment, in order to further provide a bracket, the bracket includes a plurality of vertical rods 7, and the two ends of the vertical rods 7 are respectively connected to the side fixing block 9 and the base 6. Of course, the installation of the vertical rods 7 should avoid other components, and the vertical rods 7 are not arranged at positions where other components are blocked.

[0036] In this embodiment, in order to further provide a configuration method of the side fixing block 9 , both ends of the side fixing block 9 are connected to the outer wall of the positioning tube 11 through a fixing plate 19 .

[0037] In this embodiment, when the number of the clamping members is greater than two, a connecting plate 15 is provided between two adjacent clamping members. The connection stability between the two adjacent clamping members can be increased by providing the connecting plate 15.

[0038] In this embodiment, in order to further provide a driving mechanism, the driving mechanism includes a cylinder 4 mounted on the base 6, and the shaft 5 of the cylinder 4 penetrates the base 6 and is connected to the extrusion column 18 through the linkage plate 8. When in use, the shaft 5 is driven to extend and retract by the cylinder 4, and then the linkage plate 8 is further driven to move, and then the extrusion column 18 is driven to move. When multiple clamping members are provided, multiple extrusion columns 18 are correspondingly provided, each of which is fixed on the linkage plate 8, and then multiple extrusion columns 18 are simultaneously driven to move positions through one linkage plate 8.

[0039] In this embodiment, a plurality of positioning columns 12 are provided on one end of the base 6 facing the clamping member, and a positioning block 13 is provided at the end of each positioning column 12. The sheet metal part 25 can be stably supported by the arrangement of the plurality of positioning blocks 13. Of course, the length of the positioning columns 12 can be set according to the shape of the sheet metal part 25, as long as each positioning block 13 can be supported on the surface of the sheet metal part 25.

[0040] In this embodiment, a plurality of connecting columns 3 are provided at one end of the base 6 facing away from the clamping member, and the ends of the connecting columns 3 are all connected to the mounting plate 1, and the mounting plate 1 is provided with a plurality of mounting holes 2. Through such a configuration, the sheet metal spraying fixture can be installed at a workstation or at the end of a manipulator through the mounting holes 2, which facilitates the use of the sheet metal spraying fixture.

[0041] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

[0042] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

[0043] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A clamp for sheet metal spraying, characterized in that: The sheet metal spraying fixture comprises a base (6) and at least one clamping member mounted on the base (6) via a bracket; The clamping member comprises a positioning tube (11), a plurality of arc plates (20) are arranged in the circumferential direction inside the positioning tube (11), and one end of the plurality of arc plates (20) facing away from the base (6) protrudes out of the positioning tube (11); A conical arc surface is provided on the inner side of one end of the circular arc plate (20) facing the base (6), and a plurality of the conical arc surfaces enclose a conical hole (21) coaxial with the positioning tube (11); An extrusion column (18) is provided at one end of the clamping member facing the base (6), and the extrusion column (18) is connected to a conical column (16) that cooperates with the conical hole (21) and is used to expand the conical hole (21); The base (6) is provided with a driving mechanism for pushing the conical column (16) to extend into or withdraw from the conical hole (21), and the arc plate (20) is elastically connected to the side of the positioning tube (11).

2. The sheet metal spraying fixture according to claim 1, characterized in that: A limiting portion (14) is provided at one end of the arc plate (20) facing away from the base (6), and an inclined stop surface is provided on the outer side of the limiting portion (14).

3. The sheet metal spraying fixture according to claim 1, characterized in that: A plurality of side fixing blocks (9) corresponding one to one with the arc plates (20) are arranged on the outer side of the positioning tube (11); The side surface of the side fixing block (9) facing the positioning tube (11) is provided with at least two spring grooves (23) arranged in parallel with the axial direction of the positioning tube (11); A return spring (24) is arranged in the spring groove (23), and a movable column (22) connected to the return spring (24) is slidably inserted into the spring groove (23); The movable column (22) passes through the side hole provided on the positioning tube (11) and is connected to the arc plate (20).

4. The sheet metal spraying fixture according to claim 3, characterized in that: At least one circular arc reinforcing rod (10) is arranged between two adjacent side fixing blocks (9).

5. The sheet metal spraying fixture according to claim 3, characterized in that: The bracket comprises a plurality of vertical rods (7), and two ends of the vertical rods (7) are respectively connected to the side fixing blocks (9) and the base (6).

6. The sheet metal spraying fixture according to claim 3, characterized in that: Both ends of the side fixing block (9) are connected to the outer wall of the positioning tube (11) via fixing plates (19).

7. The sheet metal spraying fixture according to claim 1, characterized in that: When the number of the clamping members is greater than two, a connecting plate (15) is provided between two adjacent clamping members.

8. The sheet metal spraying fixture according to claim 1, characterized in that: The driving mechanism comprises a cylinder (4) mounted on the base (6); the shaft (5) of the cylinder (4) passes through the base (6) and is connected to the extrusion column (18) via a linkage plate (8).

9. The sheet metal spraying fixture according to claim 1, characterized in that: A plurality of positioning columns (12) are arranged on one end of the base (6) facing the clamping member, and a positioning block (13) is arranged at the end of each positioning column (12).

10. The sheet metal spraying fixture according to any one of claims 1 to 9, characterized in that: A plurality of connection columns (3) are arranged on one end of the base (6) facing away from the clamping member, and the ends of the connection columns (3) are connected to a mounting plate (1), and a plurality of mounting holes (2) are arranged on the mounting plate (1).

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