Supporting tool special for chair legs and working method

Abstract

The invention relates to a supporting tool special for chair legs and a working method, and belongs to the field of tool clamps. The tool comprises a tool base and is structurally characterized by further comprising a tight supporting mechanism used for tightly supporting chair legs and a push-pull mechanism used for controlling the tight supporting mechanism to open, the push-pull mechanism and the tight supporting mechanism are both installed on the tool base, the push-pull mechanism is matched with the tight supporting mechanism, the push-pull mechanism comprises a push-pull rod and a push-pull head, and the push-pull rod is matched with the push-pull head. The push-pull head is arranged on the push-pull rod, the push-pull head makes contact with the tight supporting mechanism, the push-pull rod is provided with the push-pull blocks, the push-pull blocks make contact with the tight supporting mechanism, the push-pull rod is connected with a piston rod of the push-pull air cylinder, the tool base is installed on a cylinder barrel of the push-pull air cylinder, the tight supporting mechanism comprises the tight supporting blocks, spring grooves and annular springs, and the number of the tight supporting blocks is multiple. The spring grooves are formed in the outer walls of the tight supporting blocks, the annular springs are located in the multiple spring grooves, and the push-pull mechanism makes contact with the inner walls of the tight supporting blocks.

Description

Technical Field

[0001] The invention relates to a tightening tool specially used for chair legs and a working method, belonging to the field of tool fixtures. Background Art

[0002] After the chair legs are processed and formed, they need to be polished. This process requires polishing the burrs and welding slag on the bottom of the chair legs. In view of this, a polishing device for chair leg processing is disclosed in the patent document with application number 202321288590.3. When the chair legs are fixed in the above-mentioned prior art, when the chair foot body 1 is conveyed by the conveying device 4 to the top of the embedding seat 311, the controller controls the first lifting component 313 to drive the embedding seat 311 to rise from the initial position, thereby lifting the chair foot body 1 to the same horizontal position as the grinding wheel machine 223, and then controls the telescopic rod 322a in the clamping mechanism 32 to press the pressing block 321 downward on the top of the chair foot body 1 to fix the chair foot body 1. The above-mentioned fixing method will cover a large area of ​​the chair leg, affecting the polishing area. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art and to provide a structurally rationally designed tightening tool and working method specifically for chair legs.

[0004] The technical solution adopted by the present invention to solve the above-mentioned problem is: the tightening tool specially used for chair legs includes a tool seat, and its structural feature is that it also includes a tightening mechanism for tightening the chair legs, and a push-pull mechanism for controlling the tightening mechanism to open, and the push-pull mechanism and the tightening mechanism are both installed on the tool seat, and the push-pull mechanism cooperates with the tightening mechanism.

[0005] Furthermore, the push-pull mechanism includes a push-pull rod and a push-pull head, wherein the push-pull head is arranged on the push-pull rod, and the push-pull head is in contact with the tightening mechanism.

[0006] Furthermore, a push-pull block is installed on the push-pull rod, and the push-pull block is in contact with the tightening mechanism.

[0007] Furthermore, the push-pull rod is connected to the piston rod of the push-pull cylinder, and the tooling seat is installed on the cylinder barrel of the push-pull cylinder.

[0008] Furthermore, the tightening mechanism includes a tightening block, a spring groove and an annular spring. The number of the tightening blocks is multiple, the spring groove is arranged on the outer wall of the tightening block, the annular spring is located in the multiple spring grooves, and the push-pull mechanism contacts the inner walls of the multiple tightening blocks.

[0009] Furthermore, a limiting slide block is provided on the tooling seat, and a limiting slide groove is provided on the tightening block, and the limiting slide groove cooperates with the limiting slide block.

[0010] Furthermore, a limiting ring groove is provided on the tooling seat, and a limiting hook is provided on the tightening block, and the limiting hook cooperates with the limiting ring groove.

[0011] Furthermore, the inner wall of the tightening block is provided with a push-pull head inclined surface, and the push-pull head inclined surface is in contact with the push-pull head.

[0012] Furthermore, the inner wall of the tightening block is provided with a push-pull block inclined surface, and the push-pull block inclined surface is in contact with the push-pull block.

[0013] Furthermore, a clamping mechanism is installed on the tooling seat, and the clamping mechanism includes a first clamping block and a second clamping block, the first clamping block is installed on the tooling seat, the second clamping block is installed on the first clamping block, and a clamping groove is formed between the first clamping block and the second clamping block.

[0014] Furthermore, the push-pull mechanism is installed on a connecting flange, and the connecting flange is installed at the end of the robot.

[0015] Furthermore, another technical purpose of the present invention is to provide a working method of a tightening tool specifically used for chair legs.

[0016] The above technical objectives of the present invention are achieved through the following technical solutions.

[0017] A working method for a tightening tool specially used for chair legs, characterized in that: the working method is as follows: a robot holds the tightening tool and inserts the tightening mechanism into the center hole of the chair leg, When the push-pull cylinder pulls the push-pull rod, the push-pull head contacts the inclined surface of the push-pull head, thereby causing multiple tightening blocks to move outward synchronously to tighten the center hole of the chair leg; When the push-pull cylinder pushes the push-pull rod, under the action of the annular spring, the plurality of tightening blocks can be synchronously moved inwards to disengage the center hole of the chair leg.

[0018] Furthermore, the chair leg side arm of the chair leg is placed in the clamping groove between the first clamping block and the second clamping block.

[0019] Compared with the prior art, the present invention has the following advantages: the tightening tool is installed at the end of the robot, and the robot holds the tightening tool and inserts the tightening tool into the center hole of the chair leg, thereby tightening the chair leg. During the grinding process, to prevent the chair leg from rotating, the side arm of the chair leg can be placed in the clamping groove between the first clamping block and the second clamping block. The use of the tightening tool to fix the chair leg can make it more comprehensive to grind it and avoid covering more positions that need to be grinded. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is a schematic diagram of the three-dimensional structure of a tightening tool specially used for chair legs according to an embodiment of the present invention.

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of a tightening tool specially used for chair legs according to an embodiment of the present invention.

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of a tightening tool specially used for chair legs according to an embodiment of the present invention.

[0023] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure of part A in FIG.

[0024] Figure 5 It is a schematic cross-sectional structure diagram of a tightening tool (in an open state) specifically used for chair legs according to an embodiment of the present invention.

[0025] Figure 6 It is a schematic cross-sectional structure diagram of a tightening tool (in a folded state) specifically used for chair legs according to an embodiment of the present invention.

[0026] Figure 7 It is a schematic diagram of the structure of the use state of the tightening tool specially used for the chair legs according to the embodiment of the present invention.

[0027] In the figure: tooling seat 1, push-pull mechanism 2, tightening mechanism 3, clamping mechanism 4, connecting flange 5, chair foot 6, Limiting slide block 11, limiting ring groove 12, Push-pull rod 21, push-pull head 22, push-pull block 23, push-pull cylinder 24, Tightening block 31, limiting slide groove 32, limiting hook 33, spring groove 34, annular spring 35, push-pull head inclined surface 36, push-pull block inclined surface 37, The first clamping block 41, the second clamping block 42, Chair leg center hole 61 and chair leg side arms 62. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and by way of examples. The following examples are intended to explain the present invention but the present invention is not limited to the following examples.

[0029] Example

[0030] See also Figures 1 to 7As shown, it should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, if there are references to terms such as "upper", "lower", "left", "right", "middle" and "one" in this specification, they are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0031] The tightening tool specially used for chair legs in this embodiment includes a tool seat 1, a tightening mechanism 3 for tightening the chair legs 6, and a push-pull mechanism 2 for controlling the tightening mechanism 3 to open. The push-pull mechanism 2 and the tightening mechanism 3 are both installed on the tool seat 1, and the push-pull mechanism 2 cooperates with the tightening mechanism 3.

[0032] The push-pull mechanism 2 in this embodiment includes a push-pull rod 21 and a push-pull head 22. The push-pull head 22 is arranged on the push-pull rod 21. A push-pull block 23 is installed on the push-pull rod 21. The push-pull head 22 and the push-pull block 23 are both in contact with the tightening mechanism 3. The push-pull rod 21 is connected to the piston rod of the push-pull cylinder 24. The tooling seat 1 is installed on the cylinder barrel of the push-pull cylinder 24. The push-pull mechanism 2 is installed on the connecting flange 5, and the connecting flange 5 is installed at the end of the robot.

[0033] The tightening mechanism 3 in this embodiment includes a tightening block 31, a spring groove 34 and an annular spring 35. There are multiple tightening blocks 31. The spring groove 34 is arranged on the outer wall of the tightening block 31. The annular spring 35 is located in multiple spring grooves 34. The push-pull mechanism 2 contacts the inner walls of multiple tightening blocks 31.

[0034] In this embodiment, the tooling seat 1 is provided with a limit slide block 11 and a limit ring groove 12, and the support block 31 is provided with a limit slide groove 32 and a limit hook 33. The limit slide groove 32 cooperates with the limit slide block 11, and the limit hook 33 cooperates with the limit ring groove 12.

[0035] The inner wall of the tightening block 31 in this embodiment is provided with an inclined push-pull head inclined surface 36 and a push-pull block inclined surface 37 . The inclined push-pull head inclined surface 36 contacts the tapered push-pull head 22 , and the inclined push-pull block inclined surface 37 contacts the tapered push-pull block 23 .

[0036] A clamping mechanism 4 is installed on the tooling seat 1 in this embodiment. The clamping mechanism 4 includes a first clamping block 41 and a second clamping block 42. The first clamping block 41 is installed on the tooling seat 1, and the second clamping block 42 is installed on the first clamping block 41, and a clamping groove is formed between the first clamping block 41 and the second clamping block 42.

[0037] The working method of the tightening tool specially used for chair legs in this embodiment is as follows: the robot holds the tightening tool and inserts the tightening mechanism 3 into the center hole 61 of the chair leg 6. To prevent the chair leg 6 from rotating, the side arm 62 of the chair leg can be placed in the clamping groove between the first clamping block 41 and the second clamping block 42 at the same time.

[0038] When the push-pull rod 21 is pulled downward by the push-pull cylinder 24 (such as Figure 5 As shown), the push-pull head 22 contacts the push-pull head inclined surface 36, thereby enabling multiple tightening blocks 31 to move outward synchronously to tighten the center hole 61 of the chair leg; when the push-pull rod 21 is pushed upward by the push-pull cylinder 24 (as shown Figure 6 As shown in FIG. 1 ), under the action of the annular spring 35, the plurality of tightening blocks 31 can be synchronously moved inward to disengage the center hole 61 of the chair leg.

[0039] Specifically, the push-pull head 22 and the push-pull block 23 are both tapered, and the push-pull head inclined surface 36 and the push-pull block inclined surface 37 are both inclinedly arranged. When the push-pull rod 21 moves along its axial direction and makes the push-pull head 22 and the push-pull block 23 contact the push-pull head inclined surface 36 and the push-pull block inclined surface 37 respectively, multiple support blocks 31 can be driven to move synchronously along the radial direction of the push-pull rod 21.

[0040] By setting the limiting slider 11 and the limiting groove 32, multiple tightening blocks 31 can be moved synchronously along the limiting slider 11 to play a limiting role; by setting the limiting ring groove 12 and the limiting hook 33, the positions of multiple tightening blocks 31 can be limited when multiple tightening blocks 31 move outward synchronously, thereby preventing multiple tightening blocks 31 from being separated from the workbench 1.

[0041] The push-pull head 22 and the push-pull block 23 have the same function, which is to control the synchronous movement of multiple tightening blocks 31. Since the push-pull rod 21 is relatively long and the push-pull head 22 and the push-pull block 23 are provided at the same time, the multiple tightening blocks 31 can be evenly stressed, thereby avoiding the situation where the multiple tightening blocks 31 are tilted when they move synchronously. When the multiple tightening blocks 31 move synchronously outward, they are stretched apart by the push-pull head 22 and the push-pull block 23. When the multiple tightening blocks 31 move synchronously inward, they are gathered together by the annular spring 35.

[0042] In addition, it should be noted that the shapes and names of the parts and components of the specific embodiments described in this specification may be different, and the above content described in this specification is only an example of the structure of the present invention. All equivalent changes or simple changes made based on the structure, features and principles described in the patent concept of the present invention are included in the protection scope of the patent of the present invention. Technicians in the technical field of the present invention can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the present invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A tightening tool specially used for chair legs, comprising a tool seat (1), characterized in that: It also includes a tightening mechanism (3) for tightening the chair legs (6), and a push-pull mechanism (2) for controlling the tightening mechanism (3) to be stretched, wherein the push-pull mechanism (2) and the tightening mechanism (3) are both mounted on the workbench (1), and the push-pull mechanism (2) cooperates with the tightening mechanism (3); The push-pull mechanism (2) comprises a push-pull rod (21) and a push-pull head (22), wherein the push-pull head (22) is arranged on the push-pull rod (21), and the push-pull head (22) is in contact with the tightening mechanism (3); The tightening mechanism (3) comprises a tightening block (31), a spring slot (34) and an annular spring (35); the tightening blocks (31) are multiple in number; the spring slot (34) is arranged on the outer wall of the tightening block (31); the annular spring (35) is located in the multiple spring slots (34); and the push-pull mechanism (2) contacts the inner walls of the multiple tightening blocks (31).

2. The tightening tool for chair legs according to claim 1, characterized in that: A push-pull block (23) is mounted on the push-pull rod (21), and the push-pull block (23) is in contact with the tightening mechanism (3).

3. The tightening tool for chair legs according to claim 1, characterized in that: The push-pull rod (21) is connected to the piston rod of the push-pull cylinder (24), and the tooling seat (1) is mounted on the cylinder barrel of the push-pull cylinder (24).

4. The tightening tool for chair legs according to claim 1, characterized in that: A limit slide block (11) is provided on the tooling seat (1), a limit slide groove (32) is provided on the tightening block (31), and the limit slide groove (32) cooperates with the limit slide block (11).

5. The tightening tool for chair legs according to claim 1, characterized in that: A limiting ring groove (12) is provided on the tooling seat (1), and a limiting hook (33) is provided on the tightening block (31), wherein the limiting hook (33) cooperates with the limiting ring groove (12).

6. The tightening tool for chair legs according to claim 1, characterized in that: The inner wall of the tightening block (31) is provided with a push-pull head inclined surface (36), and the push-pull head inclined surface (36) is in contact with the push-pull head (22).

7. The tightening tool for chair legs according to claim 1, characterized in that: The inner wall of the tightening block (31) is provided with a push-pull block inclined surface (37), and the push-pull block inclined surface (37) is in contact with the push-pull block (23).

8. The tightening tool for chair legs according to claim 1, characterized in that: A clamping mechanism (4) is mounted on the tooling seat (1), the clamping mechanism (4) comprising a first clamping block (41) and a second clamping block (42), the first clamping block (41) being mounted on the tooling seat (1), the second clamping block (42) being mounted on the first clamping block (41), and a clamping groove being formed between the first clamping block (41) and the second clamping block (42).

9. A method for working a chair leg tightening tool as claimed in any one of claims 1 to 8, characterized in that: The working method is as follows: the robot holds the tightening tool and inserts the tightening mechanism (3) into the chair leg center hole (61) of the chair leg (6). When the push-pull cylinder (24) pulls the push-pull rod (21), the push-pull head (22) contacts the push-pull head inclined surface (36), thereby causing the plurality of tightening blocks (31) to move outward synchronously to tighten the center hole (61) of the chair leg; When the push-pull cylinder (24) pushes the push-pull rod (21), under the action of the annular spring (35), the plurality of tightening blocks (31) can be synchronously moved inwards to disengage the center hole (61) of the chair leg.

10. The working method of the chair leg tightening tool according to claim 9, characterized in that: The chair leg side arm (62) of the chair leg (6) is placed in the clamping groove between the first clamping block (41) and the second clamping block (42).

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