Supporting tool special for chair legs

Abstract

The utility model relates to a supporting tool special for chair legs, 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] This utility model relates to a clamping fixture specifically for chair legs, belonging to the field of tooling and fixtures. Background Technology

[0002] After the chair legs are 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 patent document with application number 202321288590.3. In the above-mentioned prior art, when fixing the chair legs, when the chair leg body 1 is transported by the conveying device 4 to the top of the mounting seat 311, the controller controls the first lifting component 313 to drive the mounting seat 311 to rise from the initial position, thereby raising the chair leg body 1 to the same level as the grinding wheel 223. Then, the telescopic rod 322a in the pressing mechanism 32 is controlled to press the pressure block 321 down on the top of the chair leg body 1 to fix the chair leg body 1. The above fixing method will cover a large area of ​​the chair leg, affecting the polishing area. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned shortcomings in the existing technology and to provide a structurally reasonable tooling for supporting chair legs.

[0004] The technical solution adopted by this utility model to solve the above problems is: the fixture for supporting chair legs includes a fixture base, and its structural feature is that it also includes a supporting mechanism for supporting the chair legs, and a push-pull mechanism for controlling the opening of the supporting mechanism. The push-pull mechanism and the supporting mechanism are both installed on the fixture base, and the push-pull mechanism cooperates with the supporting mechanism.

[0005] Furthermore, the push-pull mechanism includes a push-pull rod and a push-pull head, the push-pull head being disposed on the push-pull rod and in contact with the tensioning mechanism.

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

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

[0008] Furthermore, the tensioning mechanism includes tensioning blocks, spring grooves, and annular springs. There are multiple tensioning blocks, the spring grooves are disposed on the outer wall of the tensioning blocks, the annular springs are located in the multiple spring grooves, and the push-pull mechanism contacts the inner wall of the multiple tensioning blocks.

[0009] Furthermore, the tooling base is provided with a limiting slider, and the support block is provided with a limiting groove, the limiting groove cooperating with the limiting slider.

[0010] Furthermore, the tooling base is provided with a limiting ring groove, and the support block is provided with a limiting hook, the limiting hook cooperating with the limiting ring groove.

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

[0012] Furthermore, the inner wall of the support block is provided with a push-pull block inclined surface, which contacts the push-pull block.

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

[0014] Furthermore, the push-pull mechanism is mounted on the connecting flange, which is mounted on the robot's end effector.

[0015] Compared with the prior art, the present invention has the following advantages: The tensioning fixture is installed at the end of the robot. The robot holds the tensioning fixture and inserts it into the center hole of the chair leg, thereby tightening the chair leg. During the polishing process, in order to prevent the chair leg from rotating, the side arm of the chair leg can be placed in the groove between the first clamping block and the second clamping block. Using the tensioning fixture to fix the chair leg can make the polishing more comprehensive and avoid covering too many areas that need to be polished. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a chair leg clamping fixture according to an embodiment of the present invention.

[0017] Figure 2 This is a three-dimensional structural diagram of a chair leg clamping fixture according to an embodiment of the present invention.

[0018] Figure 3 This is a three-dimensional structural diagram of a chair leg clamping fixture according to an embodiment of the present invention.

[0019] Figure 4 yes Figure 3 A magnified structural diagram of part A in the diagram.

[0020] Figure 5 This is a cross-sectional structural diagram of a chair leg tensioning fixture (open state) according to an embodiment of the present invention.

[0021] Figure 6 This is a cross-sectional structural diagram of a chair leg support fixture (folded state) according to an embodiment of the present invention.

[0022] Figure 7 This is a schematic diagram of the usage state of the special chair leg tensioning fixture according to an embodiment of the present invention.

[0023] In the diagram: 1. Tooling base; 2. Push-pull mechanism; 3. Supporting mechanism; 4. Clamping mechanism; 5. Connecting flange; 6. Chair legs.

[0024] Limiting slider 11, limiting ring groove 12

[0025] 21. Push-pull rod; 22. Push-pull head; 23. Push-pull block; 24. Push-pull cylinder.

[0026] 31. Support block; 32. Limiting slide groove; 33. Limiting hook; 34. Spring groove; 35. Ring spring; 36. Sloping surface of push-pull head; 37. Sloping surface of push-pull block.

[0027] First clamping block 41, second clamping block 42

[0028] 61, center hole of chair leg; 62, side arm of chair leg. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0030] Example

[0031] See Figures 1 to 7 As shown in the accompanying drawings, the structures, proportions, sizes, etc., depicted in this specification are merely for illustrative purposes to aid those skilled in the art and to provide a clear understanding. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the use of terms such as "upper," "lower," "left," "right," "middle," and "one" in this specification is solely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0032] The fixture for supporting chair legs in this embodiment includes a fixture base 1, a supporting mechanism 3 for supporting chair legs 6, and a push-pull mechanism 2 for controlling the opening of the supporting mechanism 3. The push-pull mechanism 2 and the supporting mechanism 3 are both mounted on the fixture base 1, and the push-pull mechanism 2 cooperates with the supporting mechanism 3.

[0033] 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 disposed on the push-pull rod 21, and a push-pull block 23 is installed on the push-pull rod 21. Both the push-pull head 22 and the push-pull block 23 are in contact with the tensioning 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 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.

[0034] The tensioning mechanism 3 in this embodiment includes tensioning blocks 31, spring grooves 34, and annular springs 35. There are multiple tensioning blocks 31. The spring grooves 34 are disposed on the outer wall of the tensioning blocks 31. The annular springs 35 are located in the multiple spring grooves 34. The push-pull mechanism 2 is in contact with the inner wall of the multiple tensioning blocks 31.

[0035] In this embodiment, the tooling base 1 is provided with a limiting slider 11 and a limiting ring groove 12, and the support block 31 is provided with a limiting slide groove 32 and a limiting hook 33. The limiting slide groove 32 cooperates with the limiting slider 11, and the limiting hook 33 cooperates with the limiting ring groove 12.

[0036] In this embodiment, the inner wall of the support block 31 is provided with an inclined push-pull head slope 36 and a push-pull block slope 37. The inclined push-pull head slope 36 contacts the push-pull head 22 with a taper, and the inclined push-pull block slope 37 contacts the push-pull block 23 with a taper.

[0037] In this embodiment, a clamping mechanism 4 is installed on the tooling base 1. 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 base 1, and the second clamping block 42 is installed on the first clamping block 41, forming a clamping groove between the first clamping block 41 and the second clamping block 42.

[0038] The working method of the chair leg tensioning fixture in this embodiment is as follows: The robot holds the tensioning fixture and inserts the tensioning mechanism 3 into the center hole 61 of the chair leg 6. To prevent the chair leg 6 from rotating, the chair leg side arm 62 can be placed in the clamping groove between the first clamping block 41 and the second clamping block 42 at the same time.

[0039] When the push-pull rod 21 is pulled down by the push-pull cylinder 24 (as shown in the image) Figure 5 As shown), the push-pull head 22 contacts the push-pull head inclined surface 36, thereby causing multiple tensioning 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 upward (as shown), the push-pull rod 21 is pushed upward (as shown). Figure 6 As shown, under the action of the annular spring 35, multiple support blocks 31 can move inward synchronously to disengage the center hole 61 of the chair leg.

[0040] Specifically, both the push-pull head 22 and the push-pull block 23 are tapered, and both the push-pull head inclined surface 36 and the push-pull block inclined surface 37 are inclined. When the push-pull rod 21 moves along its axial direction and the push-pull head 22 and the push-pull block 23 come into contact with 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.

[0041] The limit slider 11 and limit groove 32 allow multiple support blocks 31 to move synchronously along the limit slider 11, thus achieving a limiting effect; the limit ring groove 12 and limit hook 33 allow the position of multiple support blocks 31 to be limited when multiple support blocks 31 move outward synchronously, thus preventing multiple support blocks 31 from detaching from the tooling seat 1.

[0042] The push-pull head 22 and push-pull block 23 serve the same purpose: to control the synchronous movement of multiple support blocks 31. Since the push-pull rod 21 is relatively long, the simultaneous setting of push-pull head 22 and push-pull block 23 can ensure that the multiple support blocks 31 are subjected to uniform force, thus preventing tilting when the multiple support blocks 31 move synchronously. When the multiple support blocks 31 move outward synchronously, they are opened by push-pull head 22 and push-pull block 23. When the multiple support blocks 31 move inward synchronously, they are closed by ring spring 35.

[0043] Furthermore, it should be noted that the specific embodiments described in this specification may differ in the shape and name of their components. The above description is merely illustrative of the structure of this utility model. All equivalent or simple variations made based on the structure, features, and principles described in this utility model patent concept are included within the protection scope of this utility model patent. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not deviate from the structure of this utility model or exceed the scope defined in these claims, all of which should fall within the protection scope of this utility model.

Claims

1. A clamping fixture specifically for chair legs, comprising a fixture base (1), characterized in that: It also includes a tensioning mechanism (3) for tightening the chair legs (6) and a push-pull mechanism (2) for controlling the tensioning mechanism (3) to open. The push-pull mechanism (2) and the tensioning mechanism (3) are both mounted on the tooling base (1), and the push-pull mechanism (2) cooperates with the tensioning mechanism (3). The tensioning mechanism (3) includes a tensioning block (31), a spring groove (34) and a ring spring (35). There are multiple tensioning blocks (31). The spring groove (34) is located on the outer wall of the tensioning block (31). The ring spring (35) is located in multiple spring grooves (34). The push-pull mechanism (2) contacts the inner wall of multiple tensioning blocks (31).

2. The fixture for tightening chair legs according to claim 1, characterized in that: The push-pull mechanism (2) includes a push-pull rod (21) and a push-pull head (22). The push-pull head (22) is disposed on the push-pull rod (21) and is in contact with the tensioning mechanism (3).

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

4. The fixture for tightening chair legs according to claim 2, 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 installed on the cylinder of the push-pull cylinder (24).

5. The fixture for tightening chair legs according to claim 1, characterized in that: The tooling base (1) is provided with a limiting slider (11), and the support block (31) is provided with a limiting groove (32). The limiting groove (32) cooperates with the limiting slider (11).

6. The fixture for tightening chair legs according to claim 1, characterized in that: The tooling base (1) is provided with a limiting ring groove (12), and the support block (31) is provided with a limiting hook (33), which cooperates with the limiting ring groove (12).

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

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

9. The fixture for tightening chair legs according to claim 1, characterized in that: A clamping mechanism (4) is installed on the tooling base (1). 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 base (1), and the second clamping block (42) is installed on the first clamping block (41), forming a clamping groove between the first clamping block (41) and the second clamping block (42).

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