Positioning and clamping unit for welding small and medium-sized assembly clamp gauge

Abstract

The utility model discloses a positioning and clamping unit of a welding medium and small assembly clamp gauge, which comprises a plurality of groups of clamping components, each clamping component comprises a clamping part, each clamping part comprises an upper clamp, a lower clamp and a plurality of clamping jaws, the upper clamp is provided with assembly holes I at equal intervals, the lower clamp is provided with assembly holes II at equal intervals, and the clamping jaws are provided with clamping jaws. The clamping jaws comprise rotating rods and arc-shaped jaws, the arc-shaped jaws are hinged to one ends of the rotating rods, the ends, away from the arc-shaped jaws, of the rotating rods of the multiple clamping jaws are connected into the first assembly hole and the second assembly hole in a rotating fit mode, and the clamping jaws on the upper clamp and the clamping jaws on the lower clamp are oppositely arranged. Comprising a plurality of guide assemblies, and each guide assembly comprises a guide rod; first guide holes are formed in the two ends of the upper clamp body, second guide holes are formed in the two ends of the lower clamp body, and the first guide holes correspond to the second guide holes, so that workpieces can be rapidly clamped, and the clamp is suitable for clamping the workpieces of different sizes.

Description

Technical Field

[0001] The utility model relates to the technical field of welding fixtures, in particular to a positioning and clamping unit of a welding small and medium-sized assembly fixture. Background Art

[0002] Welding fixtures are a general term for fixtures, mechanical devices or equipment that play a coordinating and auxiliary role in the assembly and welding process of welded structure production.

[0003] Traditional welding fixtures generally consist of three parts: a locator, a clamping mechanism, and a clamping base. In welding operations, complex fixtures with multiple different clamping mechanisms and locators installed on the clamping base are often used. The operation is extremely cumbersome, and under normal circumstances, this type of welding fixture can only be used to clamp a certain type of workpiece. When replacing a workpiece with another structure, the clamping tooling is not universal and is not easy to use for clamping workpieces of different sizes. Utility Model Content

[0004] Based on the above problems existing in the prior art, the purpose of the embodiments of the present utility model is to provide a positioning and clamping unit for welding small and medium-sized assembly fixtures, which can quickly clamp workpieces and is suitable for clamping workpieces of different sizes.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a positioning clamping unit for welding small and medium-sized assembly fixtures, including multiple groups of clamping components, the clamping components including a clamping part, the clamping part including an upper clamp, a lower clamp and a plurality of clamping claws, the upper clamp is provided with assembly holes equidistantly opened thereon, the lower clamp is provided with assembly holes equidistantly opened thereon, the clamping claws include a rotating rod and an arc-shaped claw, the arc-shaped claw is hinged to one end of the rotating rod, and the ends of the rotating rods of the plurality of clamping claws away from the arc-shaped claws are rotatably connected to the assembly holes 1 and 2.

[0006] Furthermore, the clamping jaws on the upper clamp and the clamping jaws on the lower clamp are arranged opposite to each other.

[0007] Further, it includes a plurality of guide assemblies, wherein the guide assemblies include guide rods;

[0008] A guide hole 1 is provided at both ends of the upper clamp, and a guide hole 2 is provided at both ends of the lower clamp. The guide hole 1 and the guide hole 2 are arranged correspondingly, and the guide rod is inserted into the guide hole 1 and the guide hole 2. The end of the guide rod inserted into the guide hole 1 is rotatably connected to the upper clamp.

[0009] Furthermore, it includes a base, and the guide rod is fixed on the base.

[0010] Furthermore, the guide assembly includes a spring, which is sleeved on the outside of the guide rod, and two ends of the spring are respectively in contact with the end of the lower clamp and the end surface of the base.

[0011] Furthermore, the clamping assembly includes two through rods, and through holes are provided on the side surfaces of both ends of the lower clamp, and the through rods can be inserted into the through holes.

[0012] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0013] 1. Press the lower clamp downward to open the space between the lower and upper clamps. At this time, place the workpiece to be clamped between the lower and upper clamps, and then remove the pressure on the lower clamp. Under the elastic force of the spring, the lower clamp is forced upward, and the clamping jaws between the upper and lower clamps abut against the outside of the workpiece to clamp the workpiece. During this process, when the arc-shaped claws abut against the workpiece, the arc-shaped claws rotate to a matching angle, which can firmly abut against the outside of the workpiece. Even if the surface of the workpiece is uneven, multiple sets of jaws can still clamp the workpiece firmly.

[0014] 2. When the workpieces to be clamped are of different sizes, the through rod can be inserted into the through hole and passed through the through hole of the lower clamp of the required clamping part. At this time, when the lower clamp is pressed down, the lower clamp passed by the through rod will move down at the same time. In this way, different groups of clamping parts are controlled to be opened, which can be used to clamp workpieces of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] In the picture:

[0017] Figure 1 It is a three-dimensional schematic diagram of the positioning and clamping unit in the utility model;

[0018] Figure 2 This is an exploded schematic diagram of the positioning and clamping unit in the present utility model;

[0019] Figure 3 yes Figure 2 A three-dimensional schematic diagram of the clamping portion;

[0020] Figure 4 yes Figure 2 Exploded schematic diagram of the clamping portion;

[0021] Figure 5 yes Figure 3 An enlarged schematic diagram of the gripper in FIG.

[0022] Figure 6 yes Figure 1 A three-dimensional schematic diagram of the guide assembly in FIG.

[0023] In the picture:

[0024] 1. Clamping assembly;

[0025] 11. Clamping part; 12. Through rod;

[0026] 111. Upper clamp; 112. Lower clamp; 113. Clamping jaws;

[0027] 1110, assembly hole 1; 1111, guide hole 1;

[0028] 1120, assembly hole 2; 1121, guide hole 2; 1122, through hole;

[0029] 1131, rotating rod; 1132, curved claw;

[0030] 2. Guide assembly;

[0031] 21. Guide rod; 22. Spring;

[0032] 3. Base. DETAILED DESCRIPTION

[0033] The present invention will now be described in detail with reference to the accompanying drawings. This drawing is a simplified schematic diagram, which only illustrates the basic structure of the present invention in a schematic manner, and therefore only shows the components related to the present invention.

[0034] See also Figure 1-6 The utility model provides a technical solution: a positioning and clamping unit for welding small and medium-sized assembly fixtures, including multiple groups of clamping components 1, multiple guide components 2 and a base 3.

[0035] The clamping assembly 1 includes a clamping portion 11 and two penetrating rods 12 .

[0036] The clamping portion 11 includes an upper clamp 111 , a lower clamp 112 , and a plurality of clamping claws 113 .

[0037] The upper fixture 111 is provided with assembly holes 1110 at equal intervals, and guide holes 1111 are provided at both ends of the upper fixture 111 .

[0038] The lower fixture 112 is provided with second assembly holes 1120 at equal intervals, two ends of the lower fixture 112 are provided with second guide holes 1121 , and the sides of the two ends of the lower fixture 112 are provided with through holes 1122 .

[0039] The first guide hole 1111 and the second guide hole 1121 are provided correspondingly.

[0040] The clamping jaw 113 includes a rotating rod 1131 and an arc-shaped jaw 1132 . The arc-shaped jaw 1132 is hinged to one end of the rotating rod 1131 .

[0041] The ends of the rotating rods 1131 of the multiple clamping jaws 113 away from the arc-shaped jaws 1132 are rotatably connected to the assembly hole 1110 and the assembly hole 2 1120 . The clamping jaws 113 on the upper clamp 111 and the clamping jaws 113 on the lower clamp 112 are arranged opposite to each other.

[0042] The penetrating rod 12 can be inserted into the penetrating hole 1122 .

[0043] The guide assembly 2 includes a guide rod 21 and a spring 22 .

[0044] The guide rod 21 is inserted into the guide hole 1111 and the guide hole 2 1121 . One end of the guide rod 21 inserted into the guide hole 1111 is rotatably connected to the upper clamp 111 . The guide rod 21 is fixed to the base 3 .

[0045] The spring 22 is sleeved on the outer side of the guide rod 21 , and two ends of the spring 22 are respectively in contact with the end of the lower clamp 112 and the end surface of the base 3 .

[0046] The lower clamp 112 is pressed down to open the space between the lower clamp 112 and the upper clamp 111. At this time, the workpiece to be clamped is placed between the lower clamp 112 and the upper clamp 111, and then the pressure on the lower clamp 112 is removed. Under the elastic force of the spring 22, the lower clamp 112 is forced upward, and the clamping jaws 113 between the upper clamp 111 and the lower clamp 112 abut against the outside of the workpiece to clamp the workpiece. During this process, when the arc-shaped claws 1132 abut against the workpiece, the arc-shaped claws 1132 rotate to a matching angle, which can firmly abut against the outside of the workpiece. Even if the surface of the workpiece is uneven, multiple sets of clamping jaws 113 can also clamp the workpiece firmly.

[0047] When the workpieces to be clamped are of different sizes, the through rod 12 can be inserted into the through hole 1122 and passed through the through hole 1122 of the lower clamp 112 of the required clamping part 11. At this time, when the lower clamp 112 is pressed down, the lower clamp 112 passed by the through rod 12 moves downward at the same time. In this way, different groups of clamping parts 11 are controlled to be opened, which can be used to clamp workpieces of different sizes.

[0048] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the scope of the present invention. The technical scope of this utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A positioning and clamping unit for welding small and medium-sized assembly fixtures, characterized by: The invention comprises a plurality of clamping assemblies, wherein the clamping assemblies include a clamping part, wherein the clamping part includes an upper clamp, a lower clamp and a plurality of clamping jaws, wherein the upper clamp is provided with an equidistant assembly hole 1, and the lower clamp is provided with an equidistant assembly hole 2, and the clamping jaws include a rotating rod and an arc-shaped claw, wherein the arc-shaped claw is hinged to one end of the rotating rod, and the rotating rods of the plurality of clamping jaws are rotatably connected to the assembly hole 1 and the assembly hole 2 at one end away from the arc-shaped claw.

2. The positioning and clamping unit of the welding small and medium-sized assembly fixture according to claim 1 is characterized in that: The clamping jaws on the upper clamp and the clamping jaws on the lower clamp are arranged opposite to each other.

3. The positioning and clamping unit of the welding small and medium-sized assembly fixture according to claim 1 is characterized in that: It includes a plurality of guide assemblies, wherein the guide assemblies include guide rods; A guide hole 1 is provided at both ends of the upper clamp, and a guide hole 2 is provided at both ends of the lower clamp. The guide hole 1 and the guide hole 2 are arranged correspondingly, and the guide rod is inserted into the guide hole 1 and the guide hole 2. The end of the guide rod inserted into the guide hole 1 is rotatably connected to the upper clamp.

4. The positioning and clamping unit of the welding small and medium-sized assembly fixture according to claim 3 is characterized in that: It comprises a base, and the guide rod is fixed on the base.

5. The positioning and clamping unit of the welding small and medium-sized assembly fixture according to claim 4 is characterized in that: The guide assembly includes a spring, which is sleeved on the outer side of the guide rod, and two ends of the spring are respectively in contact with the end of the lower clamp and the end surface of the base.

6. The positioning and clamping unit of the welding small and medium-sized assembly fixture according to claim 1 is characterized in that: The clamping assembly includes two through rods. The sides of both ends of the lower clamp are provided with through holes, and the through rods can be inserted into the through holes.

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