CN212885925U - Single-cylinder four-connecting-rod bidirectional positioning and clamping device of welding fixture - Google Patents
Single-cylinder four-connecting-rod bidirectional positioning and clamping device of welding fixture Download PDFInfo
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- CN212885925U CN212885925U CN202021108244.9U CN202021108244U CN212885925U CN 212885925 U CN212885925 U CN 212885925U CN 202021108244 U CN202021108244 U CN 202021108244U CN 212885925 U CN212885925 U CN 212885925U
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Abstract
The utility model relates to a welding jig single cylinder four-bar linkage two-way positioning and clamping device, the device include the base and set up the fixed support portion on the base, compress tightly portion and link mechanism. The fixed supporting part comprises a fixed connecting plate, a first fixed supporting block, a second fixed supporting block, a limiting block fixed end and an air cylinder; the pressing part comprises a cylinder pressing arm, a pressing rod, a limiting block movable end, a first pressing block, a pin base adjusting plate, a pin base and a positioning pin; the connecting rod mechanism comprises a second pressing block, a mounting plate, an upper connecting rod, a movable rod, a lower connecting rod, an ear plate, an upper connecting rod shaft, a movable rod shaft and a lower connecting rod shaft, wherein the upper connecting rod, the movable rod, the lower connecting rod, the ear plate, the upper connecting rod shaft, the movable rod shaft and the lower connecting rod shaft are used for driving the second. The device realizes that a single cylinder drives a positioning pin and two positioning blocks for controlling different directions, synchronous bidirectional clamping is realized, and multidirectional precision positioning is realized. The novel positioning device is novel in structure, simple in principle, capable of effectively saving cost and space, more beneficial to manual operation, accurate in positioning and strong in practicability; the application is very wide, and the effect is very obvious.
Description
Technical Field
The utility model relates to an automobile manufacturing equipment, in particular to welding jig single cylinder four-bar linkage two-way positioning and clamping device.
Background
With the rapid development of the automobile industry, people not only pay attention to the appearance, safety and comfort of automobiles, but also put forward higher requirements on the precision of the automobiles. For automobile manufacturers, how to ensure the positioning precision of the plate in each process is more important while meeting the requirements of people. In actual production, the welding fixture often needs to position the plate in multiple directions to ensure the precision of the plate, so that the welding fixture usually adopts positioning devices such as a plurality of cylinders, a plurality of positioning blocks and a plurality of positioning pins to position the plate in different directions; and a single cylinder is connected with a positioning pin or a positioning block to realize the positioning of a certain control direction. However, the positioning device using a plurality of cylinders to control a plurality of control directions has the following disadvantages; the structure is complicated, the cost is high, the occupied space is large, the production rhythm is influenced, the installation is inconvenient, the later manual maintenance is difficult, and the like.
Therefore, it is an urgent need to solve the problem of the art to provide a welding fixture single-cylinder four-bar bidirectional positioning and clamping device capable of connecting a positioning pin and two positioning blocks controlling different directions by a single cylinder and controlling multidirectional positioning.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned weak point, provide a novel structure, the principle is simple, reasonable in design, practicality are strong, with low costs, can realize that the locating piece of a locating pin and two control different directions are connected to single cylinder, realize the welding jig two-way positioning clamping device of four-bar of multi-direction precision positioning single cylinder.
In order to realize the purpose, the utility model adopts the technical scheme that: the utility model provides a welding jig single cylinder four connecting rods two-way positioning and clamping device which characterized in that: the device is formed by connecting a base, a fixed supporting part arranged on the base, a pressing part and a connecting rod mechanism;
the fixed supporting part is arranged on the base through a fixed connecting plate; the pressing part is arranged on a cylinder pressing arm through a pressing rod; the fixed end of the connecting rod mechanism is arranged on the fixed connecting plate through the mounting plate, and the movable end of the connecting rod mechanism is arranged on the pressure rod through the upper connecting rod;
the fixed supporting part is formed by connecting a fixed connecting plate, a first fixed supporting block, a second fixed supporting block, a fixed end of a limiting block and an air cylinder; the first fixed supporting block, the second fixed supporting block and the fixed end of the limiting block are respectively installed on the fixed connecting plate through screws, and the air cylinder is installed on the side face of the fixed connecting plate through screws;
the pressing part is formed by connecting a cylinder pressing arm, a pressing rod, a movable end of a limiting block, a first pressing block, a pin base adjusting plate, a pin base and a positioning pin; the pressing rod is fixedly connected with the air cylinder pressing arm through a bolt, the first pressing block and the movable end of the limiting block are fixed on the pressing rod through screws respectively, and the pin boss adjusting plate is installed on the side face of the pressing rod through a screw; the pin base is fixed on the pin base adjusting plate through a bolt, and the positioning pin is fixed on the pin base through a locknut;
the connecting rod mechanism is formed by connecting a second pressing block, an upper connecting rod, a movable rod, a lower connecting rod, an ear plate, a mounting plate, an upper connecting rod shaft, a movable rod shaft and a lower connecting rod shaft; the lower end of the upper connecting rod is connected with the upper end of the movable rod through the upper connecting rod shaft and the locknut, the lower end of the movable rod is connected with the upper end of the lower connecting rod through the movable rod shaft and the locknut, the lower end of the lower connecting rod is connected with the lug plate through the lower connecting rod shaft and the locknut, the lug plate is connected with the mounting plate through a screw, and the second compression block is fixedly connected with the lower connecting rod through a screw.
The bottom surface of the pressure rod is provided with a movable end of a limiting block, and the bottom surface of the movable end of the limiting block is provided with a limiting groove; the fixed connection board top surface is equipped with the stopper stiff end with stopper expansion end spacing groove matched with, and stopper stiff end and stopper expansion end are mutually supported.
The upper connecting rod is connected to the side face of the pressing rod through a screw, the pressing rod is connected to the air cylinder pressing arm through a screw, the upper connecting rod, the pressing rod and the air cylinder pressing arm rotate around an air cylinder rotating shaft, the lower end of the upper connecting rod is connected with the upper end of the movable rod through the upper connecting rod shaft, the lower end of the movable rod is connected with the upper end of the lower connecting rod through the movable rod shaft, and the lower end of the lower connecting rod is connected with the lug plate through the lower connecting rod shaft, so that the.
The first pressing block and the second pressing block are respectively arranged at the end parts of the plate to be welded in two different positioning directions.
The utility model has the advantages that:
(1) the device realizes that a single cylinder is connected with a positioning pin and two positioning blocks for controlling different directions, and can realize the function of accurately positioning the plate to be welded in a plurality of different directions through one-time rotary motion; the number of the used cylinders is reduced, the structure is novel, the design principle is very simple, and the cost is greatly saved.
(2) The operation action is simple, the occupied beat time is short, the occupied space is small, and the manual early-stage installation and later-stage maintenance are facilitated.
(3) The practicality is very strong, can effectively guarantee the clamp force to ensure positioning accuracy, stable in structure, the consumption piece is few, performance safe and reliable.
In a word, the utility model has the advantages that the structural design is simplified, the cost is saved, the space is effectively saved, the manual operation is more facilitated, the practicability is strong, and the requirement of the positioning precision is ensured; the application is very wide, and the effect is very obvious.
Drawings
Fig. 1 is a schematic perspective view of the clamping state of the present invention;
fig. 2 is a schematic structural view of the fixing and supporting portion of the present invention;
fig. 3 is a schematic structural view of the compressing portion of the present invention;
fig. 4 is a schematic structural diagram of the link mechanism of the present invention;
fig. 5 is a schematic perspective view of the open state of the present invention.
Detailed Description
The following detailed description of specific embodiments, structures and features according to the present invention will be made with reference to the accompanying drawings and preferred embodiments:
referring to fig. 1-5, a single-cylinder four-bar bidirectional positioning and clamping device of a welding fixture is composed of a base 1, a fixed supporting part 2, a pressing part 3 and a bar linkage 4, wherein the fixed supporting part 2, the pressing part 3 and the bar linkage 4 are arranged on the base 1;
the fixed supporting part 2 is arranged on the base 1 through a fixed connecting plate 2-01; the pressing part 3 is arranged on a cylinder pressing arm 3-10 through a pressing rod 3-09; the fixed end of the connecting rod mechanism 4 is arranged on the fixed connecting plate 2-01 through the mounting plate 4-01, and the movable end of the connecting rod mechanism 4 is arranged on the pressure lever 3-09 through the upper connecting rod 4-06.
The fixed supporting part 2 is formed by connecting a fixed connecting plate 2-01, a fixed supporting block I2-02, a fixed supporting block II 2-05, a limiting block fixed end 2-06 and an air cylinder 2-07; the first fixed supporting block 2-02, the second fixed supporting block 2-05 and the fixed end 2-06 of the limiting block are respectively installed on the fixed connecting plate 2-01 through screws, the air cylinder 2-07 is installed on the side face of the fixed connecting plate 2-01 through screws, and the first fixed supporting block 2-02 and the second fixed supporting block 2-05 realize adjustment of a control direction through gaskets 2-03 and 2-04 respectively.
The pressing part 3 is formed by connecting a cylinder pressure arm 3-10, a pressure lever 3-09, a limiting block movable end 3-01, a pressing block I3-08, a pin boss adjusting plate 3-02, a pin boss 3-04 and a positioning pin 3-03; the pressing rod 3-09 is fixedly connected with the cylinder pressing arm 3-10 through a bolt, the first pressing block 3-08 and the movable end 3-01 of the limiting block are respectively fixed on the pressing rod 3-09 through screws, the pin boss adjusting plate 3-02 is installed on the side face of the pressing rod 3-09 through screws, and the first pressing block 3-08 realizes adjustment of one control direction through a gasket 3-07; the pin seat 3-04 is fixed on the pin seat adjusting plate 3-02 through a bolt, the positioning pin 3-03 is fixed on the pin seat 3-04 through a locknut, the diameter of the positioning pin 3-03 is matched with a hole in a plate, and the positioning pin 3-03 realizes the adjustment of two control directions through gaskets 3-05 and 3-06.
The link mechanism 4 is formed by connecting a second compression block 4-05, an upper connecting rod 4-06, a movable rod 4-08, a movable rod 4-09, a lower connecting rod 4-11, an ear plate 4-03, an ear plate 4-12, a mounting plate 4-01, an upper connecting rod shaft 4-07, a movable rod shaft 4-10 and a lower connecting rod shaft 4-02; the lower end of the upper connecting rod 4-06 is connected with the upper ends of the movable rods 4-08 and 4-09 through an upper connecting rod shaft 4-07 and a locknut, the lower ends of the movable rods 4-08 and 4-09 are connected with the upper end of the lower connecting rod 4-11 through a movable rod shaft 4-10 and a locknut, the lower end of the lower connecting rod 4-11 is connected with the ear plates 4-03 and 4-12 through a lower connecting rod shaft 4-02 and a locknut, the ear plates 4-03 and 4-12 are connected with the mounting plate 4-01 through screws, the second compression block 4-05 is fixedly connected with the lower connecting rod 4-11 through a screw, and the second compression block 4-05 realizes adjustment in one control direction through a gasket 4-04.
The bottom surface of the compression bar 3-09 is provided with a limiting block movable end 3-01, and the bottom surface of the limiting block movable end 3-01 is provided with a limiting groove; the top surface of the fixed connecting plate 2-01 is provided with a limiting block fixed end 2-06 matched with a limiting groove 3-01 of the limiting block movable end, and the limiting block fixed end 2-06 and the limiting block movable end 3-01 are matched with each other so as to ensure the accuracy of pressing the positioning pin 3-03 in place.
The upper connecting rod 4-06 is connected to the side face of the pressure lever 3-09 through a screw, the pressure lever 3-09 is connected to the cylinder pressure arm 3-10 through a screw, the upper connecting rod 4-06, the pressure lever 3-09 and the cylinder pressure arm 3-10 rotate around a cylinder rotating shaft, the upper connecting rod shaft 4-07 connects the lower end of the upper connecting rod 4-06 with the upper ends of the movable rods 4-08 and 4-09, the movable rod shaft 4-10 connects the lower ends of the movable rods 4-08 and 4-09 with the upper end of the lower connecting rod 4-11, and the lower connecting rod shaft 4-02 connects the lower end of the lower connecting rod 4-11 with the ear plates 4-03 and 4-12, so that a four-bar mechanism is formed.
The first compression blocks 3-08 and the second compression blocks 4-05 are respectively arranged at the end parts of the plates to be welded in two different positioning directions; the first pressing block 3-08 and the second pressing block 4-05 respectively control two different positioning directions, and through one-time rotation movement of the single cylinder, not only is one-time rotation movement of the first pressing block 3-08 realized, but also secondary movement of the second pressing block 4-05 capable of rotating simultaneously is realized, and the function of accurately positioning the plate pieces to be welded in two different directions is realized.
The shapes of the surfaces of the first pressing block 3-08 and the second fixed supporting block 2-05 are correspondingly consistent with those of a plate to be welded; the shapes of the surfaces of the second pressing block 4-05 and the first fixed supporting block 2-02 are correspondingly consistent with those of the plates to be welded.
The working principle of the utility model is as follows:
the actual operation process is that the device is fixed on a production line of an automobile welding tool through screws, after a plate is welded, the pneumatic device controls the cylinder to act, and the cylinder pressure arm drives the pressing part and the connecting rod mechanism to be opened.
As shown in fig. 5, the cylinder pressure arm rotates 60 degrees to drive the pressing part to rotate, and the first pressing block rotates 60 degrees around the cylinder rotating shaft; meanwhile, the positioning pin rotates around the rotating shaft of the cylinder by 60 degrees and rotates out of the hole in the plate.
As shown in fig. 5, the cylinder pressure arm rotates 60 degrees, and simultaneously drives the four-bar mechanism to rotate, so that the second pressing block is opened, and the plate can be taken out.
When the workpiece feeding is completed again, the air cylinder pressure arm drives the pressing part and the connecting rod mechanism to clamp, the positioning pin is turned into a plate hole, the first pressing block and the second pressing block press the plate, so that the positioning state shown in figure 1 is achieved, the plate to be welded is accurately positioned, the effect that a single air cylinder drives one positioning pin and two positioning blocks which control different directions is achieved, synchronous bidirectional clamping is achieved, and multidirectional precision positioning is achieved.
The above detailed description of the welding fixture single-cylinder four-bar bidirectional positioning and clamping device with reference to the embodiments is illustrative and not restrictive; therefore, changes and modifications can be made without departing from the general inventive concept and should fall within the scope of the appended claims.
Claims (4)
1. The utility model provides a welding jig single cylinder four connecting rods two-way positioning and clamping device which characterized in that: the device is formed by connecting a base, a fixed supporting part arranged on the base, a pressing part and a connecting rod mechanism;
the fixed supporting part is arranged on the base through a fixed connecting plate; the pressing part is arranged on a cylinder pressing arm through a pressing rod; the fixed end of the connecting rod mechanism is arranged on the fixed connecting plate through the mounting plate, and the movable end of the connecting rod mechanism is arranged on the pressure rod through the upper connecting rod;
the fixed supporting part is formed by connecting a fixed connecting plate, a first fixed supporting block, a second fixed supporting block, a fixed end of a limiting block and an air cylinder; the first fixed supporting block, the second fixed supporting block and the fixed end of the limiting block are respectively installed on the fixed connecting plate through screws, and the air cylinder is installed on the side face of the fixed connecting plate through screws;
the pressing part is formed by connecting a cylinder pressing arm, a pressing rod, a movable end of a limiting block, a first pressing block, a pin base adjusting plate, a pin base and a positioning pin; the pressing rod is fixedly connected with the air cylinder pressing arm through a bolt, the first pressing block and the movable end of the limiting block are fixed on the pressing rod through screws respectively, and the pin boss adjusting plate is installed on the side face of the pressing rod through a screw; the pin base is fixed on the pin base adjusting plate through a bolt, and the positioning pin is fixed on the pin base through a locknut;
the connecting rod mechanism is formed by connecting a second pressing block, an upper connecting rod, a movable rod, a lower connecting rod, an ear plate, a mounting plate, an upper connecting rod shaft, a movable rod shaft and a lower connecting rod shaft; the lower end of the upper connecting rod is connected with the upper end of the movable rod through the upper connecting rod shaft and the locknut, the lower end of the movable rod is connected with the upper end of the lower connecting rod through the movable rod shaft and the locknut, the lower end of the lower connecting rod is connected with the lug plate through the lower connecting rod shaft and the locknut, the lug plate is connected with the mounting plate through a screw, and the second compression block is fixedly connected with the lower connecting rod through a screw.
2. The welding fixture single-cylinder four-connecting-rod bidirectional positioning and clamping device as recited in claim 1, wherein: the bottom surface of the pressure rod is provided with a movable end of a limiting block, and the bottom surface of the movable end of the limiting block is provided with a limiting groove; the fixed connection board top surface is equipped with the stopper stiff end with stopper expansion end spacing groove matched with, and stopper stiff end and stopper expansion end are mutually supported.
3. The welding fixture single-cylinder four-connecting-rod bidirectional positioning and clamping device as recited in claim 1, wherein: the upper connecting rod is connected to the side face of the pressing rod through a screw, the pressing rod is connected to the air cylinder pressing arm through a screw, the upper connecting rod, the pressing rod and the air cylinder pressing arm rotate around an air cylinder rotating shaft, the lower end of the upper connecting rod is connected with the upper end of the movable rod through the upper connecting rod shaft, the lower end of the movable rod is connected with the upper end of the lower connecting rod through the movable rod shaft, and the lower end of the lower connecting rod is connected with the lug plate through the lower connecting rod shaft, so that the.
4. The welding fixture single-cylinder four-connecting-rod bidirectional positioning and clamping device as recited in claim 1, wherein: the first pressing block and the second pressing block are respectively arranged at the end parts of the plate to be welded in two different positioning directions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021108244.9U CN212885925U (en) | 2020-06-16 | 2020-06-16 | Single-cylinder four-connecting-rod bidirectional positioning and clamping device of welding fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021108244.9U CN212885925U (en) | 2020-06-16 | 2020-06-16 | Single-cylinder four-connecting-rod bidirectional positioning and clamping device of welding fixture |
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| Publication Number | Publication Date |
|---|---|
| CN212885925U true CN212885925U (en) | 2021-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021108244.9U Active CN212885925U (en) | 2020-06-16 | 2020-06-16 | Single-cylinder four-connecting-rod bidirectional positioning and clamping device of welding fixture |
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| Country | Link |
|---|---|
| CN (1) | CN212885925U (en) |
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- 2020-06-16 CN CN202021108244.9U patent/CN212885925U/en active Active
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