Clamping mechanism for tool welding

Abstract

The utility model relates to a clamping mechanism for tool welding, and relates to the field of tool welding fixtures, the clamping mechanism comprises a workbench, a positioning groove matched with a case is formed in the workbench, four clamping pieces are connected to the workbench in a sliding mode, the four clamping pieces are located at the four corners of the positioning groove respectively, and the four clamping pieces are arranged on the workbench in a sliding mode. The four clamping pieces are provided with clamping corners matched with the corners of the case respectively. Four clamping driving pieces are fixedly installed on the workbench, the driving ends of the four clamping driving pieces are fixedly connected with the four clamping pieces correspondingly, and the four clamping driving pieces drive the four clamping pieces to move in the direction close to or away from the corners of the machine box. The tool welding precision can be effectively guaranteed.

Description

Technical Field

[0001] This application relates to the field of tooling welding jigs, and particularly to a clamping mechanism for tooling welding. Background Art

[0002] In recent years, motor boxes have been widely used in the electronic facilities industry. Their use can ensure the safe operation of equipment to the greatest extent, meet management requirements, and better maintain the equipment. In some special working environments, motor boxes that need to be welded are required.

[0003] In the prior art, referring to Figure 1 , there is a chassis. The chassis is welded by a bottom plate and four side plates. Among them, two opposite side plates extend and bend inwardly on both sides to be provided with extension parts, and the other two opposite side plates are respectively provided with grooves adapted to the extension parts on both sides. The extension parts are fitted in the grooves. When welding this chassis, it is necessary to weld the joints between the extension parts and the grooves.

[0004] However, if the four side plates of the chassis are respectively clamped by common jigs, it is easy to occur that the extension parts do not fit tightly with the inner walls of the grooves. If the extension parts do not fit tightly with the grooves, it is easy to cause poor welding, and there are areas for improvement. Utility Model Content

[0005] In order to ensure the welding accuracy of the tooling chassis, this application provides a clamping mechanism for tooling welding.

[0006] The clamping mechanism for tooling welding provided by this application adopts the following technical solutions:

[0007] A clamping mechanism for tooling welding includes a workbench. A positioning groove adapted to the chassis is opened on the workbench. Four clamping parts are slidably connected to the workbench. The four clamping parts are respectively located at the four corners of the positioning groove, and clamping corners adapted to the corners of the chassis are respectively opened on the four clamping parts;

[0008] Four clamping driving parts are fixedly installed on the workbench. The driving ends of the four clamping driving parts are respectively fixedly connected to the four clamping parts. The four clamping driving parts drive the four clamping parts to move in a direction approaching or away from the corners of the chassis.

[0009] By adopting the above technical solution, before welding the chassis, the operator can place the chassis to be welded in the positioning groove, and drive the clamping members at the four corners to slide towards the direction close to the four corners of the chassis, so as to clamp the four corners of the chassis, enabling the four extension parts to be tightly fitted in the embedding grooves, reducing the occurrence of excessive seams between the extension parts and the inner walls of the embedding grooves, and ensuring the accuracy of subsequent welding processing. When the welding is completed, the operator can drive the four clamping members away from the corners of the chassis through the driving member, facilitating the user to take out the chassis.

[0010] Preferably, the clamping member includes a push-pull type quick clamp, and the push-pull type quick clamp includes a first base, a push rod and a driving rod. The first base is fixedly connected to the workbench. The push rod is slidably arranged on the first base. The driving rod is in transmission cooperation with the push rod, and the driving rod drives the push rod to slide towards or away from the corners of the chassis.

[0011] By adopting the above technical solution, after the operator places the chassis in the positioning groove, the operator can rotate the driving rod to make the clamping member clamp at the four corners of the chassis; after the chassis welding is completed, the operator can drive the driving rod to make the clamping member away from the four corners of the chassis, achieving the technical effect of automatically clamping or releasing the corners of the chassis.

[0012] Preferably, two fixing seats are fixedly connected to the workbench, and the two fixing seats are respectively located on both sides of the chassis;

[0013] Clamping screws are respectively threadedly connected to the two fixing seats. One end of the clamping screw close to the side wall of the chassis is fixedly connected with a clamping plate, and the other end of the clamping screw away from the chassis is fixedly connected with a hand-held grip. The hand-held grip drives the clamping screw to slide towards or away from the chassis.

[0014] By adopting the above technical solution, through the clamping screw and the clamping plate, the two side walls of the chassis can be clamped, further improving the stability of the chassis during the welding process and reducing the situation that the welding accuracy is affected due to unstable clamping of the chassis.

[0015] Preferably, the driving members each include a second base, a lead screw, a sliding table and a servo motor. The second base is fixedly installed on the workbench. The lead screw is rotatably installed on the second base. The sliding table is installed on the lead screw. The servo motor is connected to the lead screw through a coupling;

[0016] A connecting rod is fixedly installed on the sliding table, and the connecting rod is fixedly connected to the sliding table. The servo motor drives the clamping member to slide towards or away from the corners of the chassis;

[0017] A start button and a release button for controlling the forward or reverse rotation of the servo motor are fixedly installed on the workbench.

[0018] By adopting the above technical solution, after the operator places the chassis to be welded in the positioning groove, the four servo motors can be controlled to rotate forward through the start button on the workbench to drive the sliding table, the connecting rod, and the clamping member to slide towards the direction close to the corners of the chassis and clamp the corners of the chassis; when the welding of the chassis is completed, the operator can control the servo motor to rotate in reverse through the release button on the workbench to drive the slider, the connecting rod, and the clamping member to slide towards the direction away from the four corners of the chassis and release the chassis.

[0019] Preferably, two mounting plates are fixedly connected to the second base, and the lead screw is rotatably installed between the two mounting plates;

[0020] A guide rod is fixedly installed on the connecting rod, a through hole adapted to the guide rod is formed through the mounting plate far from the clamping member, and an anti - detachment block is fixedly installed at the end of the guide rod passing through the mounting plate.

[0021] By adopting the above technical solution, the guide rod can limit the sliding trajectories of the connecting rod and the clamping member, reduce the occurrence of position deviation of the connecting rod and the clamping member, and provide guarantee for the stability of clamping and fixing the chassis.

[0022] Preferably, a spring is coaxially sleeved on the guide rod, one end of the spring is fixedly connected to the connecting rod, and the end of the spring far from the connecting rod is fixedly connected to the mounting plate.

[0023] By adopting the above technical solution, the spring is pressed tightly between the mounting plate and the connecting rod, which can accelerate the movement of the clamping member during the elongation of the clamping member and improve the stability of the sliding action of the clamping member during the retraction of the clamping member.

[0024] Preferably, thin - film pressure sensors are respectively and fixedly installed on the inner side walls of the clamping angles, and the thin - film pressure sensors detect the contact pressure between the detection chassis and the clamping member and output clamping pressure signals;

[0025] The signal output ends of the thin - film pressure sensors are respectively signal - connected to a comparator chip, and the comparator chip receives the clamping pressure signals and controls the servo motor to stop driving when the clamping pressure reaches the set value.

[0026] By adopting the above technical solution, the thin - film pressure sensor and the comparator chip can be matched with each other to realize the automatic control of the maximum clamping force of the chassis corners, and can effectively reduce the occurrence of poor clamping and over - tight clamping.

[0027] Preferably, a flexible cushion layer is fixedly connected to the inner side walls of the clamping angles.

[0028] By adopting the above technical solution, the flexible cushion is tightly pressed between the clamping member and the corner of the chassis, which can form a good protection effect on the chassis and reduce the damage caused by friction between the corner of the chassis and the clamping member.

[0029] In summary, the clamping mechanism for tooling welding of the present application includes at least one of the following beneficial technical effects:

[0030] 1. Before welding the chassis, the operator can place the chassis to be welded in the positioning groove, and drive the clamping members at the four corners to slide towards the direction close to the four corners of the chassis through the clamping members at the four corners, so as to clamp the four corners of the chassis, and the four extending parts can be tightly fitted in the embedding grooves, reducing the occurrence of excessive seams between the extending parts and the inner wall of the embedding grooves, and ensuring the accuracy of subsequent welding processing;

[0031] 2. Through the clamping screw and the clamping plate, the two side walls of the chassis can be clamped, further improving the stability of the chassis during the welding process and reducing the situation that the welding accuracy is affected due to unstable clamping of the chassis. Description of the Drawings

[0032] Figure 1 is a schematic diagram showing the overall structure of the chassis in the embodiment of the present application.

[0033] Figure 2 is a schematic diagram showing the overall structure of the clamping mechanism in the embodiment of the present application.

[0034] Figure 3 is a schematic diagram showing the overall structure of the push-pull type quick clamp in the embodiment of the present application.

[0035] Figure 4 is a schematic diagram showing the connection relationship between the second base, the lead screw, the sliding table and the servo motor in the embodiment of the present application.

[0036] Description of the reference numerals: 100, chassis; 110, side plate; 120, extending part; 130, embedding groove; 1, workbench; 11, positioning groove; 2, clamping member; 3, clamping driving member; 31, push-pull type quick clamp; 311, first base; 312, push rod; 313, driving rod; 32, second base; 33, lead screw; 34, sliding table; 35, servo motor; 36, mounting plate; 37, guide rod; 38, spring; 39, connecting rod; 4, fixed seat; 41, clamping screw; 42, clamping plate; 43, hand-held grip; 5, flexible cushion. Detailed Description of the Embodiment

[0037] The following will further describe the present application in detail Figures 2-4 in conjunction with the attached

[0038] Embodiment 1

[0039] An embodiment of the present application discloses a clamping mechanism for tooling welding. Refer to Figure 2 , which includes a workbench 1. A positioning groove 11 adapted to the chassis 100 is provided on the workbench 1. Four clamping members 2 are slidably connected to the workbench 1. The four clamping members 2 are respectively located at the four corners of the positioning groove 11, and clamping corners adapted to the corners of the chassis 100 are respectively provided on the four clamping members 2.

[0040] Four clamping driving members 3 are fixedly installed on the workbench 1. The driving ends of the four clamping driving members 3 are respectively fixedly connected to the four clamping members 2. The four clamping driving members 3 drive the four clamping members 2 to move in a direction approaching or departing from the corners of the chassis 100.

[0041] Before welding the chassis 100, an operator can place the chassis 100 to be welded in the positioning groove 11, and drive the clamping members 2 to slide in a direction approaching the four corners of the chassis 100 through the clamping members 2 at the four corners to clamp the four corners of the chassis 100, so that the four extension parts 120 can be tightly fitted in the embedding grooves 130, reducing the occurrence of excessive seams between the extension parts 120 and the inner walls of the embedding grooves 130, and ensuring the accuracy of subsequent welding processing. When the welding is completed, the operator can drive the four clamping members 2 away from the corners of the chassis 100 through the driving member, facilitating the user to take out the chassis 100.

[0042] Refer to Figure 2 And Figure 3 , in this embodiment, the clamping member 2 adopts a push-pull type quick clamp 31. The push-pull type quick clamp 31 includes a first base 311, a push rod 312 and a driving rod 313. The first base 311 is fixedly connected to the workbench 1. The push rod 312 is slidably arranged on the first base 311. The driving rod 313 is in transmission cooperation with the push rod 312. The driving rod 313 drives the push rod 312 to slide in a direction approaching or departing from the corners of the chassis 100.

[0043] After the operator places the chassis 100 in the positioning groove 11, the operator can rotate the driving rod 313 to make the clamping member 2 clamp at the four corners of the chassis 100; after the chassis 100 is welded, the operator drives the driving rod 313 to make the clamping member 2 away from the four corners of the chassis 100, and the technical effect of automatically clamping or releasing the corners of the chassis 100 can be achieved.

[0044] Among them, the push rod 312 is rotatably installed on the first base 311. Two elastic connectors approximately in the shape of "Ji" are rotatably connected to both sides of the push rod 312 respectively. The other ends of the two elastic connectors are rotatably connected to the side wall of the driving rod 313. When the operator rotates the push rod 312, the push rod 312 can be pulled to slide through the two elastic connectors, and then the clamping member 2 is pushed to slide.

[0045] It should be noted that according to the height of the chassis 100, pads can be set on the workbench 1 to change the height of the push-pull type quick clamp 31, which will not be elaborated here.

[0046] Refer to Figure 2 , in this embodiment, two fixed seats 4 are fixedly connected to the workbench 1, and the two fixed seats 4 are respectively located on both sides of the chassis 100; clamping screws 41 are respectively threadedly connected to the two fixed seats 4. One end of the clamping screw 41 close to the side wall of the chassis 100 is fixedly connected with a clamping plate 42, and the other end of the clamping screw 41 away from the chassis 100 is fixedly connected with a hand-held grip 43. The hand-held grip 43 drives the clamping screw 41 to slide in the direction of approaching or leaving the side plate 110 of the chassis 100.

[0047] Through the clamping screw 41 and the clamping plate 42, the two side walls of the chassis 100 can be clamped, further improving the stability of the chassis 100 during the welding process and reducing the situation that the welding accuracy of the chassis 100 is affected due to unstable clamping.

[0048] Refer to Figure 2 , a flexible cushion layer 5 is fixedly connected to the inner side wall of the clamping angle. The flexible cushion layer 5 abuts between the clamping member 2 and the corner of the chassis 100, which can form a good protection effect on the chassis 100 and reduce the situation that the corner of the chassis 100 is damaged by friction with the clamping member 2.

[0049] The implementation principle of the clamping mechanism for tooling welding in this application embodiment is: before welding the chassis 100, the operator can place the chassis 100 to be welded in the positioning groove 11, and drive the clamping member 2 to slide in the direction of approaching the four corners of the chassis 100 through the clamping members 2 at the four corners, clamp the four corners of the chassis 100, so that the four extension parts 120 can be tightly fitted in the embedding grooves 130, reducing the situation that the joint between the extension parts 120 and the inner wall of the embedding grooves 130 is too large, and ensuring the accuracy of the subsequent welding process.

[0050] Embodiment 2

[0051] Refer to Figure 4, in this embodiment, the driving members all adopt the second base 32, the lead screw 33, the sliding table 34 and the servo motor 35. The second base 32 is fixedly installed on the workbench 1. The lead screw 33 is rotatably installed on the second base 32. The sliding table 34 is installed on the lead screw 33. The servo motor 35 is connected to the lead screw 33 through a coupling. A connecting rod 39 is fixedly installed on the sliding table 34. The connecting rod 39 is fixedly connected to the sliding table 34. The servo motor 35 drives the clamping member 2 to slide in the direction of approaching or departing from the corner of the chassis 100. A start button and a release button for controlling the forward or reverse rotation of the servo motor 35 are fixedly installed on the workbench 1.

[0052] After the operator places the chassis 100 to be welded in the positioning groove 11, the four servo motors 35 can be controlled to rotate forward through the start button on the workbench 1 to drive the sliding table 34, the connecting rod 39, and the clamping member 2 to slide in the direction of approaching the corner of the chassis 100 and clamp the corner of the chassis 100. When the welding of the chassis 100 is completed, the operator can control the servo motor 35 to rotate in reverse through the release button on the workbench 1 to drive the slider, the connecting rod 39, and the clamping member 2 to slide in the direction of departing from the four corners of the chassis 100 and release the chassis 100.

[0053] Refer to Figure 4 , two mounting plates 36 are fixedly connected to the second base 32. The lead screw 33 is rotatably installed between the two mounting plates 36. A guide rod 37 is fixedly installed on the connecting rod 39. A through hole adapted to the guide rod 37 is formed through the mounting plate 36 away from the clamping member 2. An anti - detachment block is fixedly installed at the end of the guide rod 37 passing through the mounting plate 36.

[0054] The guide rod 37 can limit the sliding trajectories of the connecting rod 39 and the clamping member 2, reduce the occurrence of the situation of the position deviation of the connecting rod 39 and the clamping member 2, and provide guarantee for the stability of clamping and fixing the chassis 100.

[0055] Refer to Figure 4 , a spring 38 is coaxially sleeved on the guide rod 37. One end of the spring 38 is fixedly connected to the connecting rod 39, and the end of the spring 38 away from the connecting rod 39 is fixedly connected to the mounting plate 36.

[0056] The spring 38 is pressed tightly between the mounting plate 36 and the connecting rod 39, which can accelerate the movement of the clamping member 2 during the elongation process of the clamping member 2 and improve the stability of the sliding action of the clamping member 2 during the retraction process of the clamping member 2.

[0057] In an embodiment, thin film pressure sensors are fixedly installed on the inner side walls of the clamping angles respectively. The flexible cushion layer 5 covers the surfaces of the thin film pressure sensors to detect the contact pressure between the detection chassis 100 of the thin film pressure sensors and the clamping member 2 and output clamping pressure signals. The signal output ends of the thin film pressure sensors are respectively connected to comparator chips in a signal manner. The comparator chips receive the clamping pressure signals and control the servo motor 35 to stop driving when the clamping pressure reaches the set value.

[0058] The cooperation between the thin film pressure sensors and the comparator chips can achieve automatic control of the maximum clamping force at the corners of the chassis 100, effectively reducing the occurrence of poor clamping and over-tight clamping.

[0059] The above are all preferred embodiments of the present application. The protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A clamping mechanism for tooling welding, characterized in that, It includes a workbench (1), on which a positioning groove (11) adapted to the chassis (100) is provided. Four clamping members (2) are slidably connected to the workbench (1), and the four clamping members (2) are respectively located at the four corners of the positioning groove (11), and clamping angles adapted to the corners of the chassis (100) are respectively provided on the four clamping members (2). Four clamping driving members (3) are fixedly installed on the workbench (1), and the driving ends of the four clamping driving members (3) are respectively fixedly connected to the four clamping members (2). The four clamping driving members (3) drive the four clamping members (2) to move in a direction close to or away from the corners of the chassis (100).

2. The clamping mechanism for tooling welding according to claim 1, characterized in that, The clamping member (2) includes a push-pull type quick clamp (31), and the push-pull type quick clamp (31) includes a first base (311), a push rod (312) and a driving rod (313). The first base (311) is fixedly connected to the workbench (1), the push rod (312) is slidably arranged on the first base (311), the driving rod (313) is in transmission cooperation with the push rod (312), and the driving rod (313) drives the push rod (312) to slide in a direction close to or away from the corners of the chassis (100).

3. The clamping mechanism for tooling welding according to claim 2, characterized in that, Two fixed seats (4) are fixedly connected to the workbench (1), and the two fixed seats (4) are respectively located on both sides of the chassis (100). Clamping screws (41) are respectively threadedly connected to the two fixed seats (4). One end of the clamping screw (41) close to the side wall of the chassis (100) is fixedly connected to a clamping plate (42), and one end of the clamping screw (41) away from the chassis (100) is fixedly connected to a hand-held grip (43). The hand-held grip (43) drives the clamping screw (41) to slide in a direction close to or away from the chassis (100).

4. A clamping mechanism for tooling welding according to claim 1, characterized in that, All the driving members include a second base (32), a lead screw (33), a slide table (34) and a servo motor (35). The second base (32) is fixedly installed on the workbench (1), the lead screw (33) is rotatably installed on the second base (32), the slide table (34) is installed on the lead screw (33), and the servo motor (35) is connected to the lead screw (33) through a coupling. A connecting rod (39) is fixedly installed on the slide table (34), and the connecting rod (39) is fixedly connected to the slide table (34). The servo motor (35) drives the clamping member (2) to slide in a direction close to or away from the corners of the chassis (100). A start button and a release button for controlling the forward or reverse rotation of the servo motor (35) are fixedly installed on the workbench (1).

5. The clamping mechanism for tooling welding according to claim 4, characterized in that, Two mounting plates (36) are fixedly connected to the second base (32), and the lead screw (33) is rotatably installed between the two mounting plates (36). A guide rod (37) is fixedly installed on the connecting rod (39). A through hole adapted to the guide rod (37) is formed through the mounting plate (36) away from the clamping member (2). An anti - detachment block is fixedly installed at the end of the guide rod (37) passing through the mounting plate (36).

6. The clamping mechanism for tooling welding according to claim 5, wherein, A spring (38) is coaxially sleeved on the guide rod (37). One end of the spring (38) is fixedly connected to the connecting rod (39), and the end of the spring (38) away from the connecting rod (39) is fixedly connected to the mounting plate (36).

7. The clamping mechanism for tooling welding according to claim 6, characterized in that, Thin - film pressure sensors are respectively and fixedly installed on the inner side walls of the clamping angles. The thin - film pressure sensors detect the contact pressure between the detection chassis (100) and the clamping member (2) and output clamping pressure signals; The signal output ends of the thin - film pressure sensors are respectively signal - connected to comparator chips. The comparator chips receive the clamping pressure signals and control the servo motor (35) to stop driving when the clamping pressure reaches a set value.

8. A clamping mechanism for tooling welding according to claim 1, characterized in that, Flexible cushion layers (5) are fixedly connected to the inner side walls of the clamping angles.

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