Robot spot welding workstation for jacking and positioning clamp

Abstract

The utility model relates to the technical field of welding, and provides a robot spot welding workstation for jacking and positioning a clamp, which is characterized in that four wheels of the clamp are roughly positioned through two rough positioning mechanisms from an opening in the front side of a bottom plate, and then the clamp is pushed to the inner side of an inner bottom plate; the rear side edge of the clamp is positioned and guided through the fine guiding and positioning mechanism, the positioning and supporting mechanism drives a positioning pin to be jacked into the bottom of the clamp through a jacking air cylinder to position and support the clamp and jack the clamp off the ground, and the supporting and locking mechanism drives a supporting and locking strip through an inner pushing air cylinder to clamp the positioning pin together with a supporting plate. And the output end of the jacking air cylinder moves downwards, so that the support locking strip supports the clamp, the positioning pin positions the clamp, and the clamp can be quickly switched.

Description

Technical Field

[0001] The utility model relates to the technical field of welding, in particular to a robot spot welding workstation for lifting and positioning a fixture. Background Art

[0002] Industrial automated robotic spot welding is widely used in the production of automotive parts. During the body assembly process, due to cost and space constraints, a single robotic workstation is typically used to weld multiple vehicle models. This requires flexible fixture switching capabilities within the workstation, necessitating a fixture switching mechanism for rapid fixture switching. Traditional switching mechanisms consist of simple front V-shaped stoppers and cylinder clamps, lacking precise support and positioning. This leads to poor stability after repeated switching, compromising weld quality and accuracy. This results in scrapped parts after welding, resulting in significant efficiency and cost losses. Utility Model Content

[0003] In view of this, the purpose of the present invention is to propose a robot spot welding workstation for lifting and positioning the fixture, so as to solve the problem that the existing technology has no precise support and positioning, resulting in poor stability of the switching mechanism after multiple switching, and the welding quality and accuracy cannot be guaranteed.

[0004] Based on the above purpose, the utility model provides a robot spot welding workstation for lifting and positioning the fixture, including a base plate, the front side of the base plate is open, and the base plate is fixed to the ground in the shape of a door, two positioning support mechanisms are provided on the top of the left and right sides of the base plate, and the two positioning support mechanisms are arranged at intervals on the top of the base plate; a fine guide mechanism is provided on the top of the rear side of the base plate; two coarse guide mechanisms are provided on the left and right sides of the base plate at the opening on the front side; a support locking mechanism is provided on the top of the base plate between the two positioning support mechanisms, and a support plate is provided on the base plate above the two positioning support mechanisms and the support locking mechanism; the positioning The positioning support mechanism includes a lifting cylinder for lifting, and a locating pin is placed at the top output end of the lifting cylinder through a slot. The locating pin slides longitudinally through the support plate, and the top of the locating pin matches the locating block on the side of the fixture; the support locking mechanism includes an inner pushing cylinder that pushes toward the opening of the base plate, and two support locking bars are provided at the inner output end of the inner pushing cylinder. The two support locking bars are closely arranged front and back, and the support locking bar is located on the side of the locating pin close to the opening of the base plate and above the support plate. A slot matching the locating pin is provided on the side of the support locking bar close to the locating pin. The support locking bar contacts the locating pin through the slot and clamps the locating pin together with the support plate.

[0005] Preferably, the lifting cylinder and the inner pushing cylinder are both arranged on the base plate.

[0006] Preferably, two supporting feet are provided on the top of the left and right sides of the bottom plate, a support plate is provided on the top of the two supporting feet, and a lifting ear is provided on the top of the support plate.

[0007] Preferably, the inner output end of the inner push cylinder is fixedly connected to a connecting frame, and the two supporting locking bars are fixedly connected to the inner side of the connecting frame.

[0008] Preferably, the precision guide mechanism includes a mounting foot arranged at the top of the rear side of the base plate, a guide positioning column is arranged on the front side of the mounting foot, and the guide positioning column cooperates with the positioning block on the rear side of the clamp.

[0009] Preferably, the coarse guide mechanism includes guide bars arranged at the opening on the front side of the bottom plate, and the front ends of the two guide bars are in an eight-shaped shape.

[0010] Preferably, the base plate is fixed to the ground by bolts and nuts.

[0011] The beneficial effects of the present invention are as follows: the present invention roughly positions the four wheels of the fixture through two rough positioning mechanisms at the opening on the front side of the base plate, and then pushes the fixture to the inner side of the inner base plate, and the rear side of the fixture is positioned and guided by the fine guide positioning mechanism, and the positioning support mechanism drives the positioning pin to be lifted to the bottom of the fixture by the lifting cylinder to position and support the fixture and lift it off the ground, and the support locking mechanism drives the support locking bar to clamp the positioning pin and the support plate together through the inner pushing cylinder, and the output end of the lifting cylinder moves downward, so that the support locking bar supports the fixture and the positioning pin is positioned, so that the fixture can be switched quickly, and can be accurately supported and positioned. After multiple switches, the switching mechanism has good stability, so that the welding quality and precision are high. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 It is an overall schematic diagram of the utility model;

[0014] Figure 2 It is a schematic diagram of the left side of the utility model.

[0015] The following are marked in the figure:

[0016] 1-base plate, 2-lifting cylinder, 3-locating pin, 4-inward push cylinder, 5-support locking bar, 6-slot, 7-support foot, 8-support plate, 9-lifting ear, 10-connecting frame, 11-mounting foot, 12-guide positioning column, 13-guide bar. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0018] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the usual meanings understood by people with ordinary skills in the field to which this utility model belongs. The "first", "second" and similar words used in this utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0019] like Figures 1 to 2As shown, a robot spot welding workstation for lifting and positioning a fixture includes a base plate 1, the front side of the base plate 1 is open, and the base plate 1 is fixed to the ground in a door shape. Two positioning support mechanisms are provided on the top of the left and right sides of the base plate 1, and the two positioning support mechanisms are arranged at intervals on the top of the base plate 1; a fine guide mechanism is provided on the top of the rear side of the base plate 1; two left and right coarse guide mechanisms are provided at the front opening of the base plate 1; a support locking mechanism is provided on the top of the base plate 1 between the two positioning support mechanisms, and a support plate 8 is provided on the base plate 1 above the two positioning support mechanisms and the support locking mechanism; the positioning support mechanism includes a lifting mechanism Cylinder 2, with a locating pin 3 positioned through a slot at the top output end of the lifting cylinder 2. The locating pin 3 slides longitudinally through the support plate 8, with the top of the locating pin 3 mating with a locating block on the side of the fixture. The support locking mechanism includes an inner push cylinder 4 that pushes toward the opening of the base plate 1. Two support locking bars 5 are positioned at the inner output end of the inner push cylinder 4. The two support locking bars 5 are closely positioned front to back. The support locking bars 5 are located on the side of the locating pin 3 closest to the opening of the base plate 1 and above the support plate 8. The side of the support locking bar 5 closest to the locating pin 3 is provided with a notch 6 that matches the locating pin 3. The support locking bar 5 contacts the locating pin 3 through the notch 6 and, together with the support plate 8, clamps the locating pin 3. Both the lifting cylinder 2 and the inner push cylinder 4 are mounted on the base plate 1. The four wheels of the clamp are roughly positioned through two rough positioning mechanisms from the opening on the front side of the base plate 1, and then the clamp is pushed to the inside of the inner base plate 1. The rear side of the clamp is positioned and guided by the fine guide positioning mechanism. The positioning support mechanism drives the positioning pin 3 to be lifted to the bottom of the clamp by the lifting cylinder 2 to position and support the clamp and lift it off the ground. The support locking mechanism drives the support locking bar 5 to clamp the positioning pin 3 together with the support plate 8 through the inner pushing cylinder 4, and the output end of the lifting cylinder 2 moves downward, so that the support locking bar 5 supports the clamp and the positioning pin 3 is positioned, so that the clamp can be switched quickly.

[0020] Two supporting legs 7 are provided on the top of the left and right sides of the base plate 1, and a support plate 8 is provided on the top of the two supporting legs 7. A lifting lug 9 is provided on the top of the support plate 8. The base plate 1 is fixed to the ground by bolts and nuts, so that the support plate 8 is installed stably, and the bolts and nuts of the base plate 1 can be removed and the whole can be lifted by connecting the lifting lug 9 with a sling.

[0021] The inner output end of the inner push cylinder 4 is fixedly connected to a connecting frame 10 , and the two supporting locking bars 5 are fixedly connected to the inner side of the connecting frame 10 , so that the two supporting locking bars 5 can be easily extended to the top of the support plate 8 .

[0022] The fine guide mechanism includes a mounting foot 11 mounted on the top of the rear side of the base plate 1. A guide post 12 is located in front of the mounting foot 11. The guide post 12 engages with a positioning block on the rear side of the fixture. The coarse guide mechanism includes guide bars 13 located at the front opening of the base plate 1. The front ends of the two guide bars 13 are shaped like a figure eight. This first guides the four wheels of the fixture into the interior of the base plate 1 via the two guide bars 13. Finally, the positioning block on the rear side of the fixture and the guide post 12 provide precise guidance.

[0023] Those skilled in the art will understand that the discussion of any of the above embodiments is merely illustrative and is not intended to limit the scope of the present invention to these examples. Within the spirit and principles of the present invention, the technical features of the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and many other variations exist in the various aspects of the present invention described above, which are not provided in detail for the sake of clarity. Any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A robot spot welding workstation for lifting and positioning a fixture, comprising a base plate (1), the base plate (1) having an opening on the front side and being fixed on the ground in a door shape, characterized in that: Two positioning support mechanisms are provided on the top of the left and right sides of the bottom plate (1), and the two positioning support mechanisms are arranged at intervals on the top of the bottom plate (1); a fine guide mechanism is provided on the top of the rear side of the bottom plate (1); two left and right rough guide mechanisms are provided at the front opening of the bottom plate (1); a support locking mechanism is provided on the top of the bottom plate (1) between the two positioning support mechanisms, and a support plate (8) is provided on the bottom plate (1) above the two positioning support mechanisms and the support locking mechanism; the positioning support mechanism includes a lifting cylinder (2) for lifting, and a positioning pin (3) is placed on the top output end of the lifting cylinder (2) through a slot, and the positioning pin (3) slides longitudinally. The top of the positioning pin (3) is matched with the positioning block on the side of the clamp; the support locking mechanism includes an inner push cylinder (4) that pushes toward the opening of the base plate (1); two support locking bars (5) are provided at the inner output end of the inner push cylinder (4); the two support locking bars (5) are closely arranged front and back; the support locking bar (5) is located on the side of the positioning pin (3) close to the opening of the base plate (1) and above the support plate (8); a notch (6) matching the positioning pin (3) is provided on the side of the support locking bar (5) close to the positioning pin (3); the support locking bar (5) contacts the positioning pin (3) through the notch (6) and clamps the positioning pin (3) together with the support plate (8).

2. A robot spot welding workstation for lifting and positioning a fixture according to claim 1, characterized in that: The lifting cylinder (2) and the inner pushing cylinder (4) are both arranged on the base plate (1).

3. A robot spot welding workstation for lifting and positioning a fixture according to claim 2, characterized in that: Two supporting feet (7) are provided on the tops of the left and right sides of the bottom plate (1), a supporting plate (8) is provided on the tops of the two supporting feet (7), and a lifting lug (9) is provided on the tops of the supporting plates (8).

4. A robot spot welding workstation for lifting and positioning a fixture according to claim 3, characterized in that: The inner output end of the inner push cylinder (4) is fixedly connected to a connecting frame (10), and the two supporting locking bars (5) are fixedly connected to the inner side of the connecting frame (10).

5. A robot spot welding workstation for lifting and positioning a fixture according to claim 1, characterized in that: The precision guide mechanism comprises a mounting foot (11) arranged at the top of the rear side of the base plate (1), a guide positioning column (12) is arranged on the front side of the mounting foot (11), and the guide positioning column (12) cooperates with a positioning block on the rear side of the clamp.

6. A robot spot welding workstation for lifting and positioning a fixture according to claim 5, characterized in that: The coarse guide mechanism comprises guide bars (13) arranged at the front opening of the bottom plate (1), and the front ends of the two guide bars (13) are in an eight-shaped shape.

7. A robot spot welding workstation for lifting and positioning a fixture according to claim 3, characterized in that: The base plate (1) is fixed to the ground by bolts and nuts.

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