Robot grabbing tool for resistance welding of cart box

Abstract

The utility model provides a cart box electric resistance welding robot grabbing tool which comprises a fixing plate, the upper side of the fixing plate is fixedly connected with a motor, the upper side of the fixing plate is further fixedly connected with a mounting plate through a supporting column, the lower side of the fixing plate is provided with a gear and a rack, the gear is connected with the rack in a meshed mode through gear teeth, and the rack is fixedly connected with the motor. The gear is fixedly connected to an output shaft of the motor in a sleeving mode, the rack is fixedly connected with the left movable plate and the right movable plate, the left movable plate and the right movable plate are both arranged on the lower side of the fixed plate, and the front side of the left movable plate and the front side of the right movable plate are both fixedly connected with clamping arms. According to the utility model, through the driving of the motor and the transmission of the gear and the rack on the tool, the grabbing action of boxes with various sizes and specifications is realized, and due to the design of the profiling groove, the situation that a robot cannot be welded due to inaccurate positioning caused by the rotation and movement of a workpiece in the process of grabbing the tool and transferring is avoided.

Description

Technical Field

[0001] The utility model relates to the field of robot grabbing tooling, in particular to a robot grabbing tooling for resistance welding of a cart box. Background Art

[0002] At present, most of the gripping tools used in the mechanical processing industry are in the form of modules, cylinders and robotic arms. This structure requires a large area. When the cylinder-controlled robotic arm grasps workpieces of different sizes, it controls the grasping force by the air intake, which cannot effectively guarantee the same force requirement for each grasping, which easily causes the workpiece to loosen or have imprints. It is also time-consuming and labor-intensive to grasp workpieces of different sizes through limit change. Utility Model Content

[0003] The utility model aims to provide a robot grasping tool for resistance welding of cart boxes to overcome the above problems or at least partially solve the above problems.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model is specifically implemented as follows:

[0005] The utility model provides a robot grasping tooling for resistance welding of cart boxes, comprising a fixed plate, the upper side of the fixed plate is fixedly connected to a motor, and the upper side of the fixed plate is also fixedly connected to a mounting plate through a support column, a gear and a rack are respectively arranged on the lower side of the fixed plate, and the gear is meshed with the rack through gear teeth, the gear is sleeved and fixed on the output shaft of the motor, the rack is respectively fixedly connected to a left movable plate and a right movable plate, the left movable plate and the right movable plate are both arranged on the lower side of the fixed plate, and are slidably connected to the fixed plate through a slide rail assembly, the front sides of the left movable plate and the right movable plate are fixedly connected to clamping arms, and the clamping arms are provided with contoured grooves for positioning the box.

[0006] As a further solution of the utility model, four support columns are provided, and all of the four support columns are steel circular columns, and threads are provided at both ends thereof, and the two ends of the support columns are respectively connected to the fixing plate and the mounting plate through threads, so as to connect the mounting plate, the fixing plate and the motor into a whole.

[0007] As a further solution of the utility model, there are two types of profiling grooves, namely an arc-shaped profiling groove and a curled edge profiling groove, both of which are installed on the clamping arm to assist in positioning the box and avoid the risk of rotation during movement.

[0008] As a further solution of the utility model, it also includes a clamping plate, which is a rectangular plate and is installed on the arc-shaped profiling groove. The clamping plate is provided with an assembly hole and is fixedly connected to the arc-shaped profiling groove by bolts.

[0009] As a further solution of the utility model, it also includes a torsion sensing device, which is connected to the motor and is used to stop clamping after the sensing force reaches a predetermined value, thereby ensuring that the gripping force is consistent each time and that there will be no loosening or too tight situation that causes the workpiece to be crushed.

[0010] The utility model provides a robot grabbing tool for resistance welding of cart boxes, and the beneficial effects are: through the drive of the motor on the tool and the gear rack transmission, the grabbing action of boxes of various sizes and specifications is realized, and due to the design of the profiling groove, the robot can prevent the situation of inaccurate positioning due to the rotation and movement of the workpiece during the transfer process of the grabbing tool, resulting in the occurrence of welding failure;

[0011] With the torque sensing device, the gripping force can be moderate each time, and there will be no loosening or crushing caused by being too tight. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 It is a schematic diagram of the structure of the utility model when viewed from above.

[0015] Figure 3 It is a schematic diagram of the structure of the gear in the utility model.

[0016] Figure 4 It is a structural schematic diagram of the profiling groove in the utility model.

[0017] Figure 5 It is a structural schematic diagram of the box in the utility model.

[0018] In the figure: 1. mounting plate; 2. support column; 3. motor; 4. fixed plate; 5. left movable plate; 6. right movable plate; 7. slide rail assembly; 8. clamping arm; 9. arc-shaped profiling groove; 10. clamping plate; 11. curled profiling groove; 12. rack; 13. gear; 14. box. DETAILED DESCRIPTION

[0019] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0020] See also Figure 1-5 The utility model embodiment provides a robot grasping tooling for resistance welding of a cart box, including a fixed plate 4, a motor 3 is fixedly connected to the upper side of the fixed plate 4, and the upper side of the fixed plate 4 is also fixedly connected to the mounting plate 1 through a support column 2, a gear 13 and a rack 12 are respectively provided on the lower side of the fixed plate 4, and the gear 13 is meshed and connected with the rack 12 through gear teeth, the gear 13 is sleeved and fixed on the output shaft of the motor 3, the rack 12 is respectively fixedly connected to the left movable plate 5 and the right movable plate 6, the left movable plate 5 and the right movable plate 6 are both arranged on the lower side of the fixed plate 4, and are slidably connected to the fixed plate 4 through a slide rail assembly 7, the front sides of the left movable plate 5 and the right movable plate 6 are fixedly connected with a clamping arm 8, and the clamping arm 8 is provided with a contoured groove for positioning the box 14.

[0021] The slide rail assembly 7 is installed between the fixed plate 4 and the left movable plate 5 and between the fixed plate 4 and the right movable plate 6. There are six groups of them, which can ensure the sliding trajectory of the left movable plate 5 and the right movable plate 6 when moving. The clamping arm 8 is a pair of components connected to the left movable plate 5 and the right movable plate 6, extending outward, divided into left and right parts.

[0022] There are four support columns 2, all of which are steel round columns, and are provided with threads at both ends. The two ends of the support column 2 are respectively connected to the fixing plate 4 and the mounting plate 1 through threads, so as to connect the mounting plate 1, the fixing plate 4 and the motor 3 into a whole, and together serve as a group of components of the robot and are fixed on the robot.

[0023] There are two types of profiling grooves, namely, an arc profiling groove 9 and a curling profiling groove 11, both of which are installed on the clamping arm 8, for assisting the positioning of the box 14 and avoiding the risk of rotation during movement. The curling profiling groove 11 has two upper and lower grooves according to the workpiece size requirements, and can simultaneously transfer storage boxes of two heights.

[0024] It also includes a clamping plate 10, which is a rectangular plate and is installed on the arc-shaped profiling groove 9. The clamping plate 10 is provided with an assembly hole and is fixedly connected to the arc-shaped profiling groove 9 by bolts. When the motor 3 is driven, the clamping plates 10 on both sides clamp the box 14 to implement transfer.

[0025] It also includes a torsion sensing device, which is connected to the motor 3 and is used to stop clamping after the sensing force reaches a predetermined value, thereby ensuring that the gripping force is consistent each time and that there will be no loosening or over-tightening that causes the workpiece to be crushed.

[0026] During the use of the utility model, the clamping plate 10 is made of polyurethane material, which increases the anti-slip performance when grabbing the workpiece, and the curling profiling groove 11 and the arc profiling groove 9 are made of Saigang material, which has good wear resistance, high fatigue strength and dimensional stability, which can reduce the wear of the tooling under frequent use conditions and have a long service life;

[0027] When the robot starts working, it switches to a program that matches the size of the box 14. The motor 3 drives the gear 13 to rotate, driving the rack 12 to convert the circular motion into horizontal movement. The rack 12 is equipped with a left movable plate 5 and a right movable plate 6, which move to both sides along the bottom slide rail together with the clamping arm 8. When the robot arm moves above the workpiece, the clamping arm 8 starts to move back to clamp the workpiece. When the torque sensing device senses that the predetermined torque has been reached, it stops clamping and starts transferring.

[0028] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A robot gripping tool for resistance welding of cart boxes, comprising a fixing plate (4), characterized in that: The upper side of the fixed plate (4) is fixedly connected with the motor (3), and the upper side of the fixed plate (4) is also fixedly connected with the mounting plate (1) through a support column (2). The lower side of the fixed plate (4) is respectively provided with a gear (13) and a rack (12), and the gear (13) is meshed and connected with the rack (12) through gear teeth. The gear (13) is sleeved and fixed on the output shaft of the motor (3). The rack (12) is respectively fixedly connected with the left movable plate (5) and the right movable plate (6). The left movable plate (5) and the right movable plate (6) are both arranged on the lower side of the fixed plate (4) and are slidably connected with the fixed plate (4) through a slide rail assembly (7). The front sides of the left movable plate (5) and the right movable plate (6) are both fixedly connected with a clamping arm (8), and the clamping arm (8) is provided with a contoured groove for positioning the box (14).

2. A robot gripping tool for resistance welding of cart boxes according to claim 1, characterized in that: Four support columns (2) are provided, and the four support columns (2) are all steel circular columns, and are provided with threads at both upper and lower ends. The two ends of the support columns (2) are respectively connected to the fixing plate (4) and the mounting plate (1) through threads, so as to connect the mounting plate (1), the fixing plate (4) and the motor (3) into a whole.

3. A robot gripping tool for resistance welding of cart boxes according to claim 1, characterized in that: There are two types of profiling grooves, namely an arc-shaped profiling groove (9) and a curling profiling groove (11), both of which are installed on the clamping arm (8) to assist in positioning the box (14) and avoid the risk of rotation during movement.

4. A robot gripping tool for resistance welding of cart boxes according to claim 3, characterized in that: It also includes a clamping plate (10), which is a rectangular plate and is installed on the arc-shaped profiling groove (9). The clamping plate (10) is provided with an assembly hole and is fixedly connected to the arc-shaped profiling groove (9) by bolts.

5. The robot gripping tool for resistance welding of cart boxes according to claim 1 is characterized in that: It also includes a torsion sensing device, which is connected to the motor (3) and is used to stop clamping after the sensing force reaches a predetermined value, thereby ensuring that the gripping force is consistent each time and that there is no loosening or over-tightening that causes the workpiece to be crushed.

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