Workpiece spot welding and repair welding mistake-proof material shearing mechanism

Abstract

The utility model relates to the technical field of welding, in particular to a workpiece spot welding and repair welding mistake-proof material shearing mechanism, and aims to solve the technical problems that workpieces before and after repair welding are mixed due to manual omission, and the technical cost of avoiding mistakes through visual detection is high. According to the technical scheme, the workpiece spot welding and repair welding mistake-proof material shearing mechanism comprises a workbench, an opposite clamping assembly, a tail end locking assembly, a rack, a steering motor, a middle shaft rod, a shearing assembly and a clamping hole; according to the utility model, a part of waste materials left during laser cutting of the thermal forming part are pretreated, the waste materials left on the thermal forming part are sheared by matching with the shearing assembly driven by the steering motor, and the parts can be obviously distinguished through the visual appearance difference of the thermal forming part before and after repair welding, so that the production efficiency is improved. The workpieces before and after repair welding are prevented from being mixed with one another, and the problems that the workpieces before and after repair welding are mixed with one another due to manual omission, and the technical cost is high due to the fact that errors are avoided through visual detection are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding, in particular to a workpiece spot welding and repair welding error-proof shearing mechanism. Background Art

[0002] Few companies or technicians pay much attention to the error prevention of spot welding and repair welding of automotive thermoformed parts. Quality accidents that occur during the manufacturing process are often attributed to improper operation and mixing of materials by operators, without fundamentally solving the problem. Some companies with error prevention awareness will add visual marking detection to the operating instructions and inspection instructions, or add visual mechanisms to the tooling to detect welds for error prevention, thereby preventing quality accidents such as missing welds on the workpiece and mixing of workpieces before and after welding.

[0003] Although adding visual marking inspection can solve basic problems, adding visual inspection during production operations will require employees to perform an additional process (visual marking inspection), which increases the working hours of employees and reduces the OEE of equipment. Often, employees may be careless while taking into account output and quality. It can only be said that visual marking inspection reduces the frequency of occurrence, but cannot completely eliminate defects. Adding visual mechanisms to tooling to detect solder joints for error prevention can effectively prevent errors, but the equipment cost itself is very high. A good visual system can cost tens of thousands or even hundreds of thousands of yuan. For small and medium-sized enterprises, this technical solution is not cost-effective and practical.

[0004] Therefore, in order to address the above-mentioned situation where the workpieces before and after repair welding are mixed with each other due to manual negligence, and the technical cost of using visual inspection to avoid errors is high, a cost-effective and reliable anti-error shearing mechanism for spot welding and repair welding of hot-formed workpieces can be designed. Through the shearing operation of the hot-formed parts, the workpieces before and after repair welding can be clearly distinguished, thereby avoiding the occurrence of mixing of missed welding spots. Utility Model Content

[0005] In order to overcome the problem of mixing of workpieces before and after repair welding due to manual negligence, the technical cost of using visual inspection to avoid errors is high.

[0006] The technical scheme of the utility model is: a workpiece spot welding and repair welding error-proof shearing mechanism, comprising a workbench, an opposing clamping assembly, a tail end locking assembly, a frame, a steering motor, a central axis rod, a shearing assembly, and a clamping hole; an opposing clamping assembly is installed on the workbench, a tail end locking assembly on one side of the opposing clamping assembly is installed on the workbench, a frame installed on the other side of the opposing clamping assembly is provided, a hot-formed part that has been spot-welded and has reserved waste is placed on the opposing clamping assembly and the tail end locking assembly, a steering motor is installed on one side of the frame, a central axis rod connected to the frame is installed on the transmission element of the steering motor, a plurality of equidistantly distributed shearing assemblies are installed on the central axis rod, and a plurality of clamping holes corresponding to the shearing assemblies are opened on the outer wall of the central axis rod.

[0007] Preferably, the thermoformed part after repair welding carries the reserved waste and is fixed on the workbench by the opposing positioning assembly and the tail end locking assembly, and the steering motor drives the shearing assembly to shear the reserved waste part of the thermoformed part, so that the workpiece after the repair welding work is completed does not have the reserved waste, while the workpiece before the repair welding still carries the reserved waste, which can be intuitively distinguished from the appearance.

[0008] Preferably, the opposing clamping components include slide rails, slide seats, clips, and support blocks; the slide rails have two groups and are arranged parallel to each other on the workbench, two groups of slide seats that slide along the axial direction of the slide rail are installed on the same slide rail, and clips are fixedly installed on the slide seats. The opposite sides of adjacent clips are fixedly connected with support blocks supported on the lower surface of the thermoformed part. According to the plane size of the thermoformed part, the slide seat is controlled to move to the appropriate position along the slide rail, so that the spacing between the clips on the same slide rail is adapted to the thermoformed part, and the parts are clamped and fixed in opposite directions. The support blocks are supported on the lower surface of the thermoformed part to ensure that the parts are stably placed, and the support block close to the shearing component is close to the edge of the waste reserved on the thermoformed part to prevent the part from deformation during shearing.

[0009] Preferably, the opposing positioning assembly also includes an end plate and a fastening bolt; an adjacent slide seat back side is fixedly connected with an end plate located above the slide rail, the end plate has a screw hole and a fastening bolt with a knob is connected to the screw hole, after the slide seat moves to a suitable position, the fastening bolt is tightened by grasping the knob so that the end of the fastening bolt is pressed against the slide rail, and the slide seat is positioned by friction resistance.

[0010] Preferably, the tail end locking assembly includes a base and a support plate; the base is installed on the upper surface of the workbench, the side wall of the base rests on the end of the thermoformed part away from the reserved waste, and the side wall of the base is fixedly connected to the support plate on the lower surface of the thermoformed part. The base positions the end of the thermoformed part to prevent the part from sliding horizontally, and the support plate is used in conjunction with the support block to further improve the support stability of the part.

[0011] Preferably, the tail end locking assembly also includes a rotating shaft, a sleeve, and a locking frame; the upper end of the base is fixedly connected to the rotating shaft, the outer end of the rotating shaft is connected to the sleeve, the outer wall of the sleeve is fixedly connected to an eight-shaped locking frame, and the locking frame is located on the upper surface of the thermoformed part. The locking frame is rotated to the upper end of the part with the rotating shaft as the axis to prevent the part from being subjected to force on one side and causing the other side to tilt upward and become unstable during shearing.

[0012] Preferably, the shearing assembly includes a movable sleeve, a wing frame, and a positioning pin; the movable sleeve is sleeved on the central axis rod, the wing frame is fixedly connected to the movable sleeve, the outer wall of the movable sleeve at one end facing away from the wing frame has a hole corresponding to the clamping hole, and a positioning pin of a jacket spring is inserted into the hole, the wing frame can be slidably installed on the central axis rod at a suitable position through the movable sleeve, and the positioning pin is automatically pushed into the corresponding clamping hole under the elastic pulling action of the spring, thereby locking the relative position of the wing frame and the central axis rod.

[0013] Preferably, the shearing assembly also includes alignment holes, shearing blocks, and bolted connectors; a number of equidistantly distributed alignment holes are opened on the surface of the wing frame, a shearing block is arranged on the side wall of the wing frame, and the bolted connectors are composed of bolts and nuts, the bolts are fixedly connected to the shearing blocks and inserted into the alignment holes, the nuts are screwed and fixed on the bolts, and the shearing blocks can insert the bolts into the alignment holes at different positions as needed, so that they are fixed in the appropriate position, and accurately act near the connection point of the reserved waste and the thermoformed parts during rotational shearing.

[0014] Beneficial effects of the utility model:

[0015] 1. Pre-process the waste left when laser cutting the thermoformed parts, use the opposite positioning assembly and the tail end locking assembly to position the thermoformed parts after repair welding, and cooperate with the shearing assembly driven by the steering motor to shear the reserved waste on the thermoformed parts. Through the intuitive appearance difference of the thermoformed parts before and after repair welding, the parts can be clearly distinguished to prevent the workpieces before and after repair welding from mixing with each other;

[0016] 2. The error-proof shearing mechanism can significantly improve the quality problems of the parts caused by the handling or circulation process, reduce the outflow of defective products in the manufacturing process, and greatly reduce customer complaints and improve customer satisfaction;

[0017] 3. Compared with traditional visual inspection and the addition of a visual system, the error-proof shearing mechanism not only significantly improves reliability, but also greatly reduces costs in manufacturing, processing and purchasing parts. It has a higher cost-effectiveness, a simpler structure and is easier to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The first three-dimensional structure schematic diagram of the workpiece spot welding and repair welding error-proof shearing mechanism of the utility model is shown;

[0019] Figure 2 The second three-dimensional structure schematic diagram of the workpiece spot welding and repair welding error-proof shearing mechanism of the utility model is shown;

[0020] Figure 3 Shown is a three-dimensional structural schematic diagram of the opposing clamping components of the workpiece spot welding and repair welding and error-proof shearing mechanism of the utility model;

[0021] Figure 4 The three-dimensional structure diagram of the tail end locking assembly of the workpiece spot welding and repair welding and error-proof shearing mechanism of the utility model is shown;

[0022] Figure 5 The three-dimensional structure schematic diagram of the shearing assembly of the workpiece spot welding and repair welding and error-proof shearing mechanism of the utility model is shown;

[0023] Figure 6 Shown is a schematic diagram of the three-dimensional structure of the shearing assembly and the central axis rod installation of the workpiece spot welding and repair welding and anti-error shearing mechanism of the present invention.

[0024] Explanation of the accompanying drawings: 1. workbench; 2. opposing locking assembly; 3. tail end locking assembly; 4. frame; 5. steering motor; 6. middle axis rod; 7. shearing assembly; 8. clamping hole; 201. slide rail; 202. slide seat; 203. clip; 204. support block; 205. end plate; 206. fastening bolt; 301. base; 302. support plate; 303. rotating shaft; 304. bushing; 305. locking frame; 701. movable sleeve; 702. wing frame; 703. positioning pin; 704. alignment hole; 705. shearing block; 706. bolt connector. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0026] See also Figure 1-2The utility model provides an embodiment: a workpiece spot welding repair welding error-proof shearing mechanism, comprising a workbench 1, an opposing clamping assembly 2, a tail end locking assembly 3, a frame 4, a steering motor 5, a central axis rod 6, a shearing assembly 7, and a clamping hole 8; the workbench 1 is equipped with an opposing clamping assembly 2, the workbench 1 is equipped with a tail end locking assembly 3 on one side of the opposing clamping assembly 2, the other side of the opposing clamping assembly 2 has a frame 4 installed on the workbench 1, the spot-welded hot-formed parts with reserved waste are placed on the opposing clamping assembly 2 and the tail end locking assembly 3, and the frame 4 is equipped with a steering motor 5, a central axis rod 6, a shearing assembly 7, and a clamping hole 8. Machine 5, a central axis rod 6 connected to the frame 4 is installed on the transmission element of the steering motor 5, and a plurality of equally spaced shearing components 7 are installed on the central axis rod 6. A plurality of clamping holes 8 corresponding to the shearing components 7 are opened on the outer wall of the central axis rod 6. The hot-formed parts after repair welding carry the reserved waste and are fixed on the workbench 1 by the opposite clamping component 2 and the tail end locking component 3. The steering motor 5 drives the shearing component 7 to shear the reserved waste part of the hot-formed parts, so that the workpiece after the repair welding work is completed does not have the reserved waste, while the workpiece before the repair welding still carries the reserved waste, which can be intuitively distinguished from the appearance.

[0027] See also Figure 3 In this embodiment, the opposing positioning assembly 2 includes a slide rail 201, a slide seat 202, a clip 203, and a support block 204; the slide rail 201 has two groups and is arranged parallel to each other on the workbench 1, and two groups of slide seats 202 that slide along the axial direction of the slide rail 201 are installed on the same slide rail 201, and the slide seat 202 is fixedly installed with a clip 203, and the adjacent clips 203 are fixedly connected to the opposite side with a support block 204 supported on the lower surface of the hot-formed part, and the opposing positioning assembly 2 also includes an end plate 205 and a fastening bolt 206; the back side of the adjacent slide seat 202 is fixedly connected with an end plate 205 located above the slide rail 201, and the end plate 205 has a screw hole and the screw hole is connected with a screw having The knob's fastening bolt 206 controls the slide 202 to move to a suitable position along the slide rail 201 according to the plane size of the thermoformed part, so that the spacing between the clips 203 on the same slide rail 201 matches the thermoformed part, and the parts are clamped and fixed. The support block 204 is supported on the lower surface of the thermoformed part to ensure the stable placement of the part. The support block 204 on the side close to the shearing component 7 is close to the edge of the reserved waste on the thermoformed part to prevent the part from deforming during shearing. After the slide 202 moves to a suitable position, grasp the knob to tighten the fastening bolt 206, so that the end of the fastening bolt 206 is pressed against the slide rail 201, and the slide 202 is positioned by friction resistance.

[0028] See also Figure 4In this embodiment, the tail end locking assembly 3 includes a base 301 and a support plate 302; the base 301 is installed on the upper surface of the workbench 1, the side wall of the base 301 is against the end of the thermoformed part away from the reserved waste, the side wall of the base 301 is fixedly connected with the support plate 302 on the lower surface of the thermoformed part, and the tail end locking assembly 3 also includes a rotating shaft 303, a shaft sleeve 304, and a locking frame 305; the upper end of the base 301 is fixedly connected with the rotating shaft 303, and the outer sleeve of the rotating shaft 303 is connected There is a shaft sleeve 304, and an eight-shaped locking frame 305 is fixedly connected to the outer wall of the shaft sleeve 304, and the locking frame 305 is on the upper surface of the thermoformed part. The base 301 positions the end of the thermoformed part to prevent the part from sliding horizontally, and the support plate 302 is used in conjunction with the support block 204 to further improve the support stability of the part. The locking frame 305 is rotated to the upper end of the part with the rotating shaft 303 as the axis. During shearing, it is prevented that the part is subjected to force on one side, causing the other side to tilt upward and become unstable.

[0029] See also Figure 5-6 In this embodiment, the shearing assembly 7 includes a movable sleeve 701, a wing frame 702, and a positioning pin 703; the movable sleeve 701 is sleeved on the central axis rod 6, and the wing frame 702 is fixedly connected to the movable sleeve 701. The outer wall of the movable sleeve 701 at one end facing away from the wing frame 702 has a hole corresponding to the clamping hole 8 and a positioning pin 703 of a jacket spring is inserted into the hole. The shearing assembly 7 also includes a positioning hole 704, a shear block 705, and a bolt connector 706; a plurality of equidistantly distributed positioning holes 704 are opened on the surface of the wing frame 702, a shear block 705 is provided on the side wall of the wing frame 702, and a bolt connector 706 is provided. Component 706 is composed of a bolt and a nut. The bolt is fixedly connected to the shear block 705 and inserted into the alignment hole 704. The nut is screwed and fixed on the bolt. The wing frame 702 can be slidably installed on the central axis rod 6 at a suitable position through the movable sleeve 701. The positioning pin 703 is automatically pushed into the corresponding clamping hole 8 under the elastic pulling action of the spring, and the relative position of the wing frame 702 and the central axis rod 6 is locked. The shear block 705 can insert the bolt into the alignment holes 704 at different positions as needed, so that it is fixed in a suitable position and acts accurately near the connection point of the reserved waste and the thermoformed parts during rotational shearing.

[0030] When working, reserve some special-shaped waste when laser cutting the hot-formed parts (as shown in the attached Figure 1 , 2 The triangular waste in the hot forming part needs to be pre-cut by laser, leaving 2 to 3 places with a residual amount of 1mm to 1.5mm to keep connected with the hot forming part;

[0031] When the hot-formed parts are transferred to the spot welding station for repair welding, the parts are placed on the opposite clamping assembly 2 and the tail end locking assembly 3 for welding. The edge of the parts is clamped and locked by the clamping piece 203, and the locking frame 305 is rotated and locked on the upper surface of the parts, so that the part with reserved waste is facing the shearing assembly 7;

[0032] After welding is completed, the steering motor 5 is started to control the central axis rod 6 to drive the wing frame 702 to rotate toward the side of the reserved waste. The shear block 705 is used as the reserved waste. Since the waste of the thermoformed parts has only a 1-1.5 mm connection and the material of the thermoformed parts themselves is hard and brittle, the waste is sheared off by the shear block 705, leaving only the parts after repair welding.

[0033] Through the above steps, the opposite positioning component 2 and the tail end locking component 3 are used to position the thermoformed parts with reserved waste and after repair welding, and the shearing component 7 driven by the steering motor 5 is used to shear the thermoformed parts. Through the intuitive appearance difference of the thermoformed parts before and after repair welding, whether there is reserved waste or not, the parts can be clearly distinguished to prevent the workpieces before and after repair welding from being mixed with each other, so as to solve the problem of high technical cost of using visual inspection to avoid errors caused by manual omissions.

[0034] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A workpiece spot welding repair welding and error-proof cutting mechanism, comprising a workbench (1); characterized in that: The invention also comprises an opposing clamping assembly (2), a tail end locking assembly (3), a frame (4), a steering motor (5), a central axis rod (6), a shearing assembly (7), and a clamping hole (8); the opposing clamping assembly (2) is installed on the workbench (1); the tail end locking assembly (3) is installed on one side of the opposing clamping assembly (2) on the workbench (1); the opposing clamping assembly (2) has a frame (4) installed on the other side of the workbench (1); a hot-formed part with reserved waste after spot welding is placed on the opposing clamping assembly (2) and the tail end locking assembly (3); a steering motor (5) is installed on one side of the frame (4); a central axis rod (6) connected to the frame (4) is installed on the transmission element of the steering motor (5); a plurality of equally spaced shearing assemblies (7) are installed on the central axis rod (6); and a plurality of clamping holes (8) corresponding to the shearing assemblies (7) are opened on the outer wall of the central axis rod (6).

2. A workpiece spot welding and repair welding error-cutting prevention mechanism according to claim 1, characterized in that: The opposing positioning assembly (2) comprises a slide rail (201), a slide seat (202), a clamping piece (203), and a support block (204); the slide rail (201) has two groups and is arranged parallel to each other on the workbench (1); two groups of slide seats (202) are installed on the same slide rail (201) and slide along the axial direction of the slide rail (201); a clamping piece (203) is fixedly installed on the slide seat (202); and a support block (204) supported on the lower surface of the thermoformed part is fixedly connected to the opposite side of the adjacent clamping piece (203).

3. A workpiece spot welding and repair welding error-cutting prevention mechanism according to claim 2, characterized in that: The opposing positioning assembly (2) further comprises an end plate (205) and a fastening bolt (206); the back side of the adjacent slide seat (202) is fixedly connected to the end plate (205) located above the slide rail (201); a screw hole is provided in the end plate (205) and a fastening bolt (206) with a knob is connected in the screw hole.

4. The workpiece spot welding and repair welding error-cutting prevention mechanism according to claim 1 is characterized in that: The tail end locking assembly (3) comprises a base (301) and a support plate (302); the base (301) is mounted on the upper surface of the workbench (1), the side wall of the base (301) is against an end of the thermoformed part away from the reserved waste, and the side wall of the base (301) is fixedly connected to the support plate (302) located on the lower surface of the thermoformed part.

5. A workpiece spot welding and repair welding error-cutting prevention mechanism according to claim 4, characterized in that: The tail end locking assembly (3) also includes a rotating shaft (303), a shaft sleeve (304), and a locking frame (305); the upper end of the base (301) is fixedly connected to the rotating shaft (303), the outer surface of the rotating shaft (303) is connected to the shaft sleeve (304), the outer side wall of the shaft sleeve (304) is fixedly connected to the eight-shaped locking frame (305), and the locking frame (305) is located on the upper surface of the thermoformed part.

6. A workpiece spot welding and repair welding error-cutting prevention mechanism according to claim 1, characterized in that: The shearing assembly (7) comprises a movable sleeve (701), a wing frame (702), and a positioning pin (703); the movable sleeve (701) is sleeved on the central axis rod (6), the wing frame (702) is fixedly connected to the movable sleeve (701), and an outer wall of the movable sleeve (701) at one end facing away from the wing frame (702) has an eyelet corresponding to the clamping hole (8), and a positioning pin (703) of a jacket spring is inserted into the eyelet.

7. A workpiece spot welding and repair welding error-cutting prevention mechanism according to claim 6, characterized in that: The shearing assembly (7) further comprises an alignment hole (704), a shearing block (705), and a bolt connector (706); a plurality of equidistantly distributed alignment holes (704) are provided on the surface of the wing frame (702); a shearing block (705) is provided on the side wall of the wing frame (702); the bolt connector (706) comprises a bolt and a nut; the bolt is fixedly connected to the shearing block (705) and inserted into the alignment hole (704); and the nut is screwed and fixed on the bolt.

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