Positioning and clamping mechanism for chassis part welding

Abstract

The positioning and clamping mechanism comprises a bottom plate, supports are installed on the two sides of the top end of the bottom plate, the top ends of the two supports are jointly connected with a top plate, a reserved hole is formed in a workpiece, a positioning and pressing pin is inserted into the workpiece through the reserved hole, a pin shaft is fixedly connected to the bottom end of the positioning and pressing pin, and the bottom end of the pin shaft is fixedly connected with a base plate. A pin sleeve is installed in the middle of the top plate, an air cylinder is installed at the bottom end of the bottom plate, an open groove is formed in the middle of the top end of the bottom plate, the output end of the air cylinder is connected with a shrinkage pin, a shrinkage pin sleeve is arranged on the outer side of the shrinkage pin, and a reset spring is installed between the bottom end of the shrinkage pin sleeve and the bottom plate. Then the positioning pressing pin and the pin shaft are inserted, the bottom end of the pin shaft is inserted into the shrinkage pin, the shrinkage pin is driven to move downwards through shrinkage of the output end of the air cylinder, an opening of the shrinkage pin is made to shrink to extrude, fix and tension the pin shaft, and therefore the positioning pressing pin is matched to press and fix the workpiece.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts processing, in particular to a positioning clamping mechanism for chassis parts welding. Background Art

[0002] The automobile chassis rear bracket longitudinal beam welding reinforcement plate is a component used to enhance the strength of the automobile chassis rear bracket longitudinal beam. It is usually made of metal material and fixed to the longitudinal beam by welding to increase the rigidity and load-bearing capacity of the longitudinal beam. The design of the reinforcement plate can be customized according to different models and requirements to adapt to various load and stress conditions;

[0003] In the existing welding process, the welding method is generally fixed by hand, without a special positioning fixture to assist the welding process, which is less safe and less efficient;

[0004] Therefore, those skilled in the art provide a positioning and clamping mechanism for chassis component welding to solve the problems raised in the above background technology. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a positioning clamping mechanism for chassis component welding.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A positioning and clamping mechanism for chassis welding comprises a base plate, supports are installed on both sides of the top of the base plate, the tops of the two supports are commonly connected to a top plate, a workpiece is arranged on the top plate, a reserved hole is provided on the workpiece, and a positioning and clamping pin is inserted through the reserved hole, a pin shaft is fixedly connected to the bottom end of the positioning and clamping pin, a pin sleeve is installed in the middle of the top plate, and the bottom end of the pin shaft movably passes through the pin sleeve, a cylinder is installed at the bottom end of the base plate, a slot is provided in the middle of the top of the base plate, and the output end of the cylinder movably passes through the middle of the base plate and extends above the slot, a shrinkage pin is connected to the output end of the cylinder, and the bottom end of the pin shaft is slidably inserted into the inner side of the shrinkage pin, a shrinkage pin sleeve is provided on the outer side of the shrinkage pin, and a reset spring is installed between the bottom end of the shrinkage pin sleeve and the base plate.

[0008] Preferably, a steel washer is provided at the inner bottom end of the slot, and the return spring is provided between the steel washer and the shrink pin sleeve.

[0009] Preferably, the support and the base plate are fixed by screws.

[0010] Preferably, a thread groove is provided at the top of the cylinder output end, a thread column is connected to the bottom end of the shrink pin, and the thread column is threadedly connected to the inner side of the thread groove.

[0011] Preferably, a plurality of strip holes distributed in a ring array are formed on the outer side of the shrink pin, and the upper portion of the shrink pin is divided into a multi-piece structure by the plurality of strip holes.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model places the workpiece on the top plate, then inserts the positioning and clamping pin and the pin shaft, and inserts the bottom end of the pin shaft into the contraction pin. The contraction of the cylinder output end drives the contraction pin to move downward, and the contraction pin opening contracts to squeeze, fix and tighten the pin shaft, thereby cooperating with the positioning and clamping pin to clamp and fix the workpiece. The utility model has a simple structure, is easy to operate, is convenient for positioning and fixing the workpiece, and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more specifically and intuitively illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0015] Figure 1 This is a schematic diagram of the positioning and clamping mechanism structure proposed by the utility model;

[0016] Figure 2 This is a schematic diagram of the shrink pin installation structure proposed by the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the pin shaft when it is tightened.

[0018] Figure 4 The utility model is a schematic diagram of the strip hole opening structure.

[0019] In the figure: 1, bottom plate; 2, support; 3, top plate; 4, workpiece; 5, positioning and clamping pin; 6, pin shaft; 7, pin sleeve; 8, cylinder; 9, shrink pin; 91, bar hole; 10, shrink pin sleeve; 11, return spring; 12, steel gasket; 13, screw; 14, threaded column. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-4A positioning clamping mechanism for chassis welding, comprising a bottom plate 1, supports 2 are installed on both sides of the top of the bottom plate 1, a top plate 3 is commonly connected to the tops of the two supports 2, a workpiece 4 is arranged on the top plate 3, a reserved hole is arranged on the workpiece 4, and a positioning and clamping pin 5 is inserted through the reserved hole, a pin shaft 6 is fixedly connected to the bottom end of the positioning and clamping pin 5, a pin sleeve 7 is installed in the middle of the top plate 3, and the bottom end of the pin shaft 6 movably penetrates the pin sleeve 7, a cylinder 8 is installed at the bottom end of the bottom plate 1, a slot is opened in the middle of the top of the bottom plate 1, and the output end of the cylinder 8 movably penetrates the middle of the bottom plate 1 and extends to the top of the slot, a shrinking pin 9 is connected to the output end of the cylinder 8, and the bottom end of the pin shaft 6 is slidably inserted into the inner side of the shrinking pin 9, a shrinking pin sleeve 10 is arranged on the outer side of the shrinking pin 9, and a reset spring 11 is installed between the bottom end of the shrinking pin sleeve 10 and the bottom plate 1;

[0022] The technical solution adopted above is that, initially, the output end of the cylinder 8 is lifted up, and the shrinkage pin 9 is in a relaxed state. The workpiece is placed above the pin sleeve 7 on the top plate 3, and then the pin shaft 6 at the bottom end of the positioning and clamping pin 5 passes through the workpiece 4 and the pin sleeve 7 in turn and is inserted into the inner side of the shrinkage pin 9. The bottom end part of the positioning and clamping pin 5 is inserted into the inner side of the workpiece 4, but the size of the top head of the positioning and clamping pin 5 is larger than the size of the reserved hole on the workpiece 4 and cannot pass through. Finally, start the cylinder 8, and the cylinder 8 drives the shrinkage pin 9 to move downward. During the downward movement of the shrinkage pin 9, it will gradually shrink under the action of the shrinkage pin sleeve 10, thereby finally tightening the pin shaft 6, thereby clamping and fixing the workpiece 4 through the positioning and clamping pin 5.

[0023] A steel gasket 12 is arranged at the bottom end of the inner side of the slot, and a return spring 11 is arranged between the steel gasket 12 and the shrink pin sleeve 10;

[0024] In the technical solution adopted above, the reset spring 11 is provided to buffer the force acting on the shrinkage pin 9. During the downward movement of the shrinkage pin 9, the shrinkage pin sleeve 10 will be driven to move downward together through friction and extrusion force and compress the reset spring 11. At this time, the shrinkage pin 9 will also move downward relative to the shrinkage pin sleeve 10. After the reset spring 11 is compressed to a certain extent, the shrinkage pin 9 continues to move downward, as shown in the accompanying drawings, and the top head of the shrinkage pin 9 is a conical structure, and the opening of the shrinkage pin sleeve 10 gradually becomes smaller downward. Therefore, during the downward movement of the shrinkage pin 9 relative to the shrinkage pin sleeve 10, the shrinkage pin 9 is gradually squeezed inward until the outer side of the pin shaft 6 is squeezed, fixed and tightened, thereby fixing the workpiece 4.

[0025] The support 2 and the base plate 1 are fixed via screws 13 .

[0026] A thread groove is provided at the top of the output end of the cylinder 8, a thread column 14 is connected to the bottom end of the contraction pin 9, and the thread column 14 is threadedly connected to the inner side of the thread groove;

[0027] The technical solution adopted above is designed to facilitate the installation and disassembly between the cylinder 8 and the shrinkage pin 9.

[0028] A plurality of strip holes 91 distributed in a circular array are provided on the outside of the shrink pin 9, and the upper portion of the shrink pin 9 is divided into a multi-piece structure by the plurality of strip holes 91;

[0029] In the technical solution adopted above, the top head of the shrinking pin 9 is divided into multiple pieces, so that it has the ability of elastic deformation. After being squeezed by the inner wall of the shrinking pin sleeve 10 during the downward movement, it can gather and shrink inward, thereby completing the tightening and fixing of the pin shaft 6.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A positioning and clamping mechanism for chassis component welding, comprising a base plate (1), characterized in that: Supports (2) are installed on both sides of the top of the bottom plate (1), and the tops of the two supports (2) are commonly connected to a top plate (3). A workpiece (4) is arranged on the top plate (3), and a reserved hole is provided on the workpiece (4), and a positioning clamping pin (5) is inserted through the reserved hole. A pin shaft (6) is fixedly connected to the bottom end of the positioning clamping pin (5). A pin sleeve (7) is installed in the middle of the top plate (3), and the bottom end of the pin shaft (6) movably penetrates the pin sleeve (7). 1) A cylinder (8) is installed at the bottom end, a slot is opened in the middle of the top of the bottom plate (1), and the output end of the cylinder (8) movably passes through the middle of the bottom plate (1) and extends to the top of the slot, the output end of the cylinder (8) is connected to a shrinking pin (9), and the bottom end of the pin shaft (6) is slidably inserted into the inside of the shrinking pin (9), a shrinking pin sleeve (10) is arranged on the outside of the shrinking pin (9), and a return spring (11) is installed between the bottom end of the shrinking pin sleeve (10) and the bottom plate (1).

2. A positioning and clamping mechanism for chassis component welding according to claim 1, characterized in that: A steel washer (12) is arranged at the bottom end of the inner side of the slot, and the return spring (11) is arranged between the steel washer (12) and the shrink pin sleeve (10).

3. A positioning and clamping mechanism for chassis component welding according to claim 1, characterized in that: The support (2) and the base plate (1) are fixed via a screw rod (13).

4. A positioning and clamping mechanism for chassis component welding according to claim 3, characterized in that: A thread groove is provided at the top of the output end of the cylinder (8), a thread column (14) is connected to the bottom end of the shrink pin (9), and the thread column (14) is threadedly connected to the inner side of the thread groove.

5. A positioning and clamping mechanism for chassis component welding according to claim 1, characterized in that: The outer side of the shrink pin (9) is provided with a plurality of strip holes (91) distributed in a ring array, and the upper part of the shrink pin (9) is divided into a plurality of pieces by the plurality of strip holes (91).

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