Quick change structure of spot welding clamp

Abstract

The utility model discloses a spot welding clamp quick-change structure which comprises a fixed base and a quick-change structure body, and the quick-change structure body can move to the upper side of the fixed base and is fixed to the fixed base through a fixing piece. A guide structure and a first limiting block are arranged on the fixed base; the quick-change structure comprises a clamp mounting plate, and a guide block and a second limiting block which are arranged on the clamp mounting plate; the guide structure and the guide block are used for guiding the quick-change structure in the process that the quick-change structure moves to the upper side of the fixed base, and after the first limiting block abuts against the second limiting block, the quick-change structure moves in place. Through the arranged guide structure, guide block, first limiting block and second limiting block, the fixture mounting plate and the fixture on the fixture mounting plate can be quickly switched on the fixed base, and the fixture mounting plate can be accurately positioned through the cooperation of the first limiting block and the second limiting block, so that the switching efficiency of the fixture is further improved; by means of the structure, the switching process of the clamp is simple, and switching operation can be completed by one person.

Description

TECHNICAL FIELD

[0001] The utility model relates to punch and weldment welding technical field especially relates to a spot welding fixture quick change structure. BACKGROUND

[0002] Punch and weldment exist in production various specifications, and the size is different. Such as automobile manufacturing, the punch and weldment of different car body, from large frame parts to small car door interior panel punch and weldment, the size difference is great. A fixture cannot be applicable to all sizes of punch and weldment, so it is necessary to change the fixture to accurately position the workpiece of different sizes, ensure the accuracy of the welding position, avoid the welding deviation to affect the product quality.

[0003] In the prior art, the spot welding fixture cannot be quickly changed, resulting in low switching efficiency, complex switching process of the fixture, and the switching operation can be completed only by multiple people operating simultaneously. UTILITY MODEL CONTENT

[0004] The utility model provides a spot welding fixture quick change structure to overcome the above -mentioned problems.

[0005] In order to realize the above purpose, the technical scheme of the utility model is:

[0006] A spot welding fixture quick change structure, including fixed base and quick change structure, the quick change structure can move to the upper side of the fixed base, and is fixed on the fixed base by fixing piece;

[0007] The fixed base is equipped with guide structure and first limit block, the quick change structure includes fixture mounting plate and guide block and second limit block arranged on the fixture mounting plate;

[0008] The guide structure and the guide block are used for guiding the quick change structure during the process that the quick change structure moves to the upper side of the fixed base, after the first limit block and the second limit block abut, the quick change structure moves to the position.

[0009] Further, the first limit block includes ladder type protrusion and first limit surface vertically arranged on both sides of the ladder type protrusion;

[0010] The second limit block includes ladder type recess and second limit surface vertically arranged on both sides of the ladder type recess;The quick change structure can move to the ladder type protrusion into the ladder type recess, and the first limit surface and the second limit surface abut.

[0011] Further, the guide structure comprises two groups of guide wheel sets arranged along the movement direction of the quick-change structure, and the two groups of guide wheel sets are arranged at intervals, and in the process of moving the quick-change structure to the upper side of the fixed base, the two sides of the guide block at the bottom of the clamp mounting plate are respectively in abutment with the guide wheels of the two rows of guide wheel sets.

[0012] Further, the guide block is of a width that is smaller at one end than at the other end, and the two sides of the end of the guide block with the smaller width are provided with guide inclined surfaces, and in the process of moving the quick-change structure to the upper side of the fixed base, the guide inclined surfaces are first in contact with the guide wheels.

[0013] Further, the fixed base further comprises a frame body, and the guide structure and the first limiting block are both on the frame body.

[0014] The frame body is further provided with a positioning hole, the clamp mounting plate is provided with a fixing hole, and the fixing member is a fixing pin, one end of the fixing pin being capable of penetrating through the fixing hole and entering into the positioning hole to fix the clamp mounting plate and the frame body.

[0015] Further, the bottom of the clamp mounting plate is provided with a running wheel.

[0016] Further, at least two guide wheels are arranged in one group of the guide wheel sets.

[0017] The beneficial effects of the utility model are as follows:

[0018] The utility model discloses a kind of spot welding clamps quick-change structures, and the guide structure, guide block and first, second limiting block being arranged, clamp mounting plate and the clamp on it can be switched quickly on fixed base, and the cooperation of first limiting block and second limiting block can realize the accurate positioning of clamp mounting plate, further improve the switching efficiency of clamp, the switching process of the structure of clamp is simple, and single person can complete switching operation. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the drawings needed to be used in the embodiment or prior art description will be simply introduced below, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0020] Figure 1 A kind of spot welding clamps quick-change structure disclosed in the embodiments of the utility model Figure 1 ;

[0021] Figure 2The utility model discloses a kind of quick-change structure of spot welding fixture disclosed in the embodiment of the utility model Figure 2 (not shown fixture mounting plate);

[0022] Figure 3 It is the main view of a kind of quick-change structure of spot welding fixture disclosed in the embodiment of the utility model;

[0023] Figure 4 It is the structure diagram of the first limiting block of a kind of quick-change structure of spot welding fixture disclosed in the embodiment of the utility model;

[0024] Figure 5 It is the structure diagram of the second limiting block of a kind of quick-change structure of spot welding fixture disclosed in the embodiment of the utility model.

[0025] In the drawing:

[0026] 1, fixed base;11, guide structure;111, guide wheel;12, first limiting block;121, ladder-shaped protrusion;122, first limiting surface;13, frame body;131, positioning hole;132, positioning sleeve;

[0027] 2, quick-change structure;21, fixture mounting plate;22, guide block;221, guide inclined surface;23, second limiting block;231, ladder-shaped recess;232, second limiting surface;24, running wheel;

[0028] 3, fixing piece. DETAILED DESCRIPTION

[0029] To make the purpose, technical scheme and advantage of the embodiment of the utility model more clear, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model, obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor are within the protection scope of the utility model.

[0030] As Figures 1-3 shown is a kind of quick-change structure of spot welding fixture provided in the embodiment, including fixed base 1 and quick-change structure 2, the quick-change structure 2 can move to the upside of the fixed base 1, and is fixed on the fixed base 1 by fixing piece 3;

[0031] The fixed base 1 is equipped with guide structure 11 and first limiting block 12, the quick-change structure 2 includes fixture mounting plate 21 and guide block 22 and second limiting block 23 equipped on the fixture mounting plate;

[0032] The guide structure 11 and the guide block 22 are used to guide the quick-change structure 2 as it moves to the upper side of the fixed base 1. After the first limiting block 12 and the second limiting block 23 abut against each other, the quick-change structure 2 moves into place.

[0033] This utility model discloses a quick-change structure for spot welding fixtures. Through the setting of a guide structure, guide block, and first and second limiting blocks, it can realize the quick switching of the fixture mounting plate and the fixture on it on the fixed base. The cooperation of the first and second limiting blocks can realize the precise positioning of the fixture mounting plate, further improving the switching efficiency of the fixture. This structure makes the fixture switching process simple, and a single person can complete the switching operation.

[0034] In a specific embodiment, such as Figure 4 As shown, the first limiting block 12 includes a trapezoidal protrusion 121 and a first limiting surface 122 vertically disposed on both sides of the trapezoidal protrusion 121;

[0035] like Figure 5 As shown, the second limiting block 23 includes a trapezoidal groove 231 and second limiting surfaces 232 vertically disposed on both sides of the trapezoidal groove 231. The quick-change structure 2 can move until the trapezoidal protrusion 121 enters the trapezoidal groove 231, and the first limiting surface 122 abuts against the second limiting surface 232. When the trapezoidal protrusion is embedded in the trapezoidal groove, the first limiting surface 122 and the second limiting surface 232 fit tightly together, effectively limiting the horizontal displacement of the quick-change structure, with extremely high positioning accuracy, further ensuring the accuracy of the fixture mounting plate position. During the quick-change process, the operator can quickly judge whether the installation is in place based on the fitting state of the trapezoidal structure, greatly improving the convenience of the quick-change operation. At the same time, this design works in conjunction with the guide block. Based on the guide block and guide structure guiding the movement of the quick-change structure, the precise cooperation of the first and second limiting blocks makes the quick-change process smoother, significantly shortens the time required for quick-change, and effectively improves the overall work efficiency.

[0036] In a specific embodiment, the guide structure 11 includes two sets of guide wheels spaced apart. During the movement of the quick-change structure 2 to the upper side of the fixed base 1, the two sides of the guide block 22 at the bottom of the fixture mounting plate 21 abut against the guide wheels 111 of the two rows of guide wheels, respectively. When the quick-change structure moves towards the upper side of the fixed base, the two sides of the guide block at the bottom of the fixture mounting plate abut against the guide wheels of the guide wheel sets. The rolling friction of the guide wheels, compared to sliding friction, greatly reduces the resistance during the movement of the quick-change structure, making the quick-change operation more effortless. The two sets of guide wheels spaced apart can stably guide the guide blocks from both sides, effectively preventing the quick-change structure from shifting or shaking during movement, ensuring that it moves accurately along a predetermined trajectory to the upper side of the fixed base. This further improves the stability and accuracy of the quick-change structure's movement, providing a good foundation for the precise positioning of the subsequent limit blocks and the installation of the fixing components, and strongly guaranteeing the efficient operation of the spot welding fixture quick-change.

[0037] In a specific embodiment, the width of one end of the guide block 22 is smaller than the width of the other end. The two sides of the narrower end of the guide block 22 are provided with guide ramps 221. During the process of the quick-change structure 2 moving to the upper side of the fixed base 1, the guide ramps 221 first contact the guide wheels 111. In actual operation, the operator does not need to align the guide block with the guide wheel group with extreme precision. Even if there is a certain angular deviation when the quick-change structure is initially pushed, after the guide ramps contact the guide wheels, they will automatically correct the position of the quick-change structure by means of the guiding effect of the ramps, and guide it smoothly into the guide wheel group. This greatly reduces the difficulty of installing the quick-change structure, reduces the operator's operation time and effort, and improves the convenience of quick-change operation. Especially in work scenarios where fixtures are frequently changed, it can significantly improve work efficiency.

[0038] In a specific embodiment, the fixed base 1 further includes a frame 13, and the guide structure 11 and the first limiting block 12 are both on the frame 13;

[0039] The frame 13 is also provided with a positioning hole 131, and the fixture mounting plate 21 is provided with a fixing hole. The fixing member 3 is a fixing pin. One end of the fixing pin can pass through the fixing hole and enter the positioning hole 131 to fix the fixture mounting plate 21 to the frame 13. The cooperation between the positioning hole and the fixing hole provides precise positioning for the installation of the fixing pin, so that the fixing pin can quickly and accurately pass through the fixing hole and enter the positioning hole to firmly fix the fixture mounting plate to the frame. This fixing method is simple and convenient to operate and can be easily completed by a single person, which greatly improves the fixing efficiency. At the same time, as the basic component of the bearing guide structure and the first limiting block, the frame provides reliable support for the entire quick-change structure with its stable structure, ensuring the stability of each component during operation and further improving the overall performance and reliability of the spot welding fixture quick-change structure. In this embodiment, the frame is provided with a positioning sleeve 132, and the positioning sleeve is provided with a positioning hole 131. When the first limiting surface 122 abuts against the second limiting surface 232, the positioning hole 131 is coaxial with the fixing hole on its upper side.

[0040] In a specific embodiment, the bottom of the fixture mounting plate 21 is provided with traveling wheels 24, which facilitates the movement of the quick-change structure, effectively shortens the time of the entire spot welding fixture quick-change process, and improves the continuity and efficiency of production operations; in addition, the setting of traveling wheels can also reduce frictional wear between the mounting plate and the ground or other supporting surfaces, and extend the service life of the mounting plate.

[0041] In a specific embodiment, a set of guide wheels is provided with at least two guide wheels 111; the two guide wheels 111 are arranged along the movement direction of the quick-change structure and cooperate with the guide block. During the process of the quick-change structure moving towards the upper side of the fixed base 1, the guide block guides the two ends of the quick-change structure, thereby ensuring the stability of the movement of the quick-change structure and the accuracy of the movement direction, and thus ensuring the accuracy of the position of the quick-change structure; in this embodiment, a set of guide wheels is provided with two guide wheels 111.

[0042] The workflow of the quick-change structure for a spot welding fixture disclosed in this utility model is as follows:

[0043] (1) Prepare the quick-change structure that needs to be replaced / used;

[0044] (2) Push the quick-change structure toward the fixed base so that the guide block is placed between the two sets of guide wheels. The external force continuously pushes the quick-change structure until the second limiting surface of the second limiting block on the clamp mounting plate abuts against the first limiting surface of the first limiting block on the frame. At this time, the clamp mounting plate is located directly above the fixed base, and the positioning hole on the frame is aligned with the fixing hole on the clamp mounting plate.

[0045] (3) Insert the positioning pin into the fixing hole and the positioning hole to fix the quick-change structure to the fixed base. When the clamp on this clamp mounting plate is used up and needs to be replaced, pull out the fixing pin and use external force to move the clamp mounting plate away from the fixed base until it moves out of the fixed base. Then replace it with a clamp mounting plate with other types of clamps.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A quick-change structure for a spot welding fixture, characterized in that, It includes a fixed base (1) and a quick-change structure (2), wherein the quick-change structure (2) can move to the upper side of the fixed base (1) and is fixed to the fixed base (1) by a fastener (3); The fixed base (1) is provided with a guide structure (11) and a first limiting block (12). The quick-change structure (2) includes a clamp mounting plate (21) and a guide block (22) and a second limiting block (23) provided on the clamp mounting plate (21). The guide structure (11) and the guide block (22) are used to guide the quick-change structure (2) as it moves to the upper side of the fixed base (1). After the first limiting block (12) and the second limiting block (23) abut against each other, the quick-change structure (2) moves into place.

2. The quick-change structure for a spot welding fixture according to claim 1, characterized in that, The first limiting block (12) includes a trapezoidal protrusion (121) and a first limiting surface (122) vertically disposed on both sides of the trapezoidal protrusion (121); The second limiting block (23) includes a trapezoidal groove (231) and a second limiting surface (232) vertically disposed on both sides of the trapezoidal groove (231); the quick-change structure (2) can move to the trapezoidal protrusion (121) entering the trapezoidal groove (231), and the first limiting surface (122) abuts against the second limiting surface (232).

3. The quick-change structure for a spot welding fixture according to claim 1, characterized in that, The guide structure (11) includes two sets of guide wheels spaced apart. During the process of the quick-change structure (2) moving to the upper side of the fixed base (1), the two sides of the guide block (22) at the bottom of the clamp mounting plate (21) abut against the guide wheels (111) of the two rows of guide wheels respectively.

4. The quick-change structure for a spot welding fixture according to claim 3, characterized in that, The width of one end of the guide block (22) is smaller than the width of the other end. The guide block (22) has guide ramps (221) on both sides of the narrower end. During the process of the quick-change structure (2) moving to the upper side of the fixed base (1), the guide ramps (221) first contact the guide wheel (111).

5. The quick-change structure for a spot welding fixture according to claim 2, characterized in that, The fixed base (1) also includes a frame (13), and the guide structure (11) and the first limiting block (12) are both on the frame (13); The frame (13) is also provided with a positioning hole (131), and the clamp mounting plate (21) is provided with a fixing hole. The fixing member (3) is a fixing pin. One end of the fixing pin can pass through the fixing hole and enter the positioning hole (131) to fix the clamp mounting plate (21) to the frame (13).

6. The quick-change structure for a spot welding fixture according to claim 1, characterized in that, The bottom of the clamp mounting plate (21) is provided with running wheels (24).

7. The quick-change structure for a spot welding fixture according to claim 3, characterized in that, Each set of guide wheels shall have at least two guide wheels (111).

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