A double-cylinder linkage positioning lock screw calibration device

Abstract

This utility model discloses a dual-cylinder linkage positioning screw fastening calibration device, belonging to the technical field of screw fastening equipment. It includes a base unit, a positioning module, a screw fastening positioning unit, and an electric screwdriver fastening mechanism. The base unit includes a first plate and a second plate, which are fixed to the outside of a screw fastening workbench. The positioning module includes a first positioning cylinder fixed to the first plate and a second positioning cylinder fixed to the second plate. The first and second positioning cylinders are arranged in a horizontally orthogonal direction. The screw fastening positioning unit includes a first positioning plate and a second positioning plate. The first and second positioning plates are respectively fixed to the piston rods of the first and second positioning cylinders. This dual-cylinder linkage positioning screw fastening calibration device integrates positioning and fastening on the base unit, ensuring the concentricity of the fastening hole and the screwdriver bit.

Description

Technical Field

[0001] This utility model specifically relates to a dual-cylinder linkage positioning and screw calibration device, belonging to the technical field of screw fastening equipment. Background Technology

[0002] A screw fastening machine is an automated device capable of completing a large number of screw fastening tasks in a short time. By positioning the workpiece and then assembling the screws using the screw fastening machine, the efficiency and accuracy of screw assembly can be greatly improved. Existing fastening equipment, such as Chinese Patent Publication No. CN110883537A, discloses a fastening device and a screw machine with the same. The fastening device is used to fasten screws onto the workpiece. The workpiece has a workpiece positioning part, and the fastening positioning part is adapted to the workpiece positioning part to position the workpiece. After positioning the workpiece, the screw fastening operation is performed on the workpiece using an electric screwdriver assembly. However, this structure... The existing technology is not suitable for screw fastening of plate-like workpieces with 90° corners. In the processing of plate-like workpieces, when performing positioning and fastening operations on the right-angled parts of the workpiece, the common practice in the existing technology is to use a single cylinder-driven fixture or to rely on manual operation of the fixture to complete the positioning. This method makes it difficult to make the positioning plates in the two vertical directions accurately form a standard 90° angle. Moreover, the positioning and fastening processes are independent of each other and often require manual re-alignment, which reduces production efficiency and increases the probability of errors. That is, there is a deviation in the concentricity between the hole used for fastening on the positioning plate and the center of the electric screwdriver, which leads to the offset when fastening the screw. Utility Model Content

[0003] To address the aforementioned issues, this invention proposes a dual-cylinder linkage positioning and screw-locking calibration device, which integrates positioning and locking onto the base unit, ensuring the concentricity of the locking hole and the screwdriver bit.

[0004] The dual-cylinder linkage positioning and screw-locking calibration device of this utility model includes: A base unit, comprising a first plate and a second plate, wherein the first plate and the second plate are fixed to the outside of the screw-locking workbench; A positioning module, comprising a first positioning cylinder fixed to a first plate and a second positioning cylinder fixed to a second plate; the first positioning cylinder and the second positioning cylinder are arranged in a horizontally orthogonal direction. A screw-locking positioning unit includes a first positioning plate and a second positioning plate; the first positioning plate and the second positioning plate are respectively fixed on the piston rods of the first positioning cylinder and the second positioning cylinder; the first positioning plate and the second positioning plate are arranged in a direct structure; and positioning screw-locking holes are opened on the first positioning plate and the second positioning plate. The electric screwdriver locking mechanism has two sets, which are arranged opposite to the positioning locking screw holes.

[0005] During installation, first determine the locking screw hole positions at the workpiece corners. Then, assemble the positioning module, specifically: pre-fix the positioning module and the locking screw positioning unit, i.e., fix the first positioning cylinder and the first positioning plate, and fix the second positioning cylinder and the second positioning plate. Next, adjust the positions of the first and second plates so that the locking screw holes at the workpiece corners are concentric with the positioning locking screw holes. After setting, directly fix the positions of the first and second plates. Next, perform workpiece corner calibration and positioning before locking, i.e., achieve orthogonal positioning drive: the first positioning cylinder extends with air, pushing the first positioning screw hole... The positioning plate moves along the X-axis, fitting one side of the 90° right-angled edge of the workpiece, thus constraining the workpiece's displacement in the X-axis direction. Next, the second positioning cylinder is controlled to extend and push the second positioning plate along the Y-axis, fitting the other side of the 90° right-angled edge of the workpiece, thus constraining the workpiece's displacement in the Y-axis direction. At this point, the first and second positioning plates form a 90° rigid constraint on the workpiece corner through the perpendicular right-angled edge, and the workpiece's screw holes and positioning locking screw holes are precisely concentric with the center of the electric screwdriver, completing the one-time positioning of the workpiece corner and screw locking position.

[0006] Furthermore, the electric screwdriver locking mechanism includes a sliding base with two sliders slidably mounted on it. A locking cylinder for driving the rear slider is fixed to the sliding base. A guide rod is fixed to the rear slider, passing through the front guide rod and screwed with a limit nut. A spring body is sleeved between the guide rod and the slider. An electric screwdriver is fixed to the rear slider, and an air-blown screw chuck is fixed to the front slider. The screwdriver bit and the screw chuck are concentrically arranged. A positioning rod is fixed to the front end of the front slider, and the positioning rod movably abuts against the outside of the positioning locking hole. During operation, after the workpiece corner is positioned, the locking cylinder actuates, driving the rear slider to slide linearly. As the rear slider slides, the spring body synchronously drives the front slider to slide until the positioning rod abuts against the outside of the first or second positioning plate. At this point, the position of the screw chuck can be limited. Then… As the locking cylinder continues to move forward, it aligns the screw in the screw chuck and pushes it into the locking screw hole at the corner of the workpiece. Then, the electric screwdriver rotates, driving the screwdriver bit to rotate synchronously, thereby locking the screw.

[0007] Furthermore, the positioning rod is a columnar or strip-shaped structure, and the tail of the positioning rod is screwed and fixed to the slider; by rotating the positioning rod clockwise or counterclockwise, the position of the positioning rod can be adjusted, thereby adjusting the distance between the screw clamp and the locking screw hole.

[0008] Furthermore, a screw-locking table surface is fixed to the top surface of the screw-locking workbench, and a screw-locking right angle is provided at the end of the screw-locking table surface; the top surfaces of the first positioning plate and the second positioning plate are higher than the top surface of the screw-locking table surface; during operation, since the first positioning cylinder and the second positioning cylinder are both driven by air pressure, there is a certain fluctuation. Therefore, the travel termination position of the first positioning plate and the second positioning plate is limited by the edge of the screw-locking table surface. After the first positioning plate and the second positioning plate travel to press the two adjacent right angle sides of the screw-locking table surface, a 90° rigid constraint can be achieved.

[0009] Furthermore, it also includes a right-angled platform fixed to the outside of the screw-locking workbench. Each of the two right-angled sides of the right-angled platform is fixed with a mutually perpendicular X-axis manual lead screw slide and a Y-axis manual lead screw slide. The sliding ends of both the X-axis and Y-axis manual lead screw slides are fixed with Z-axis manual lead screw slides. Two first plates and a second plate are respectively fixed to the sliding ends of the two Z-axis manual lead screw slides. During operation, the X-axis and Z-axis manual lead screw slides enable adjustment of the first positioning plate in the X and Z directions, aligning the positioning screw-locking hole of the first positioning plate with the locking screw hole at the workpiece corner. Similarly, the Y-axis and Z-axis manual lead screw slides enable adjustment of the second positioning plate in the Y and Z directions, aligning the positioning screw-locking hole of the second positioning plate with the locking screw hole at the workpiece corner.

[0010] Compared with the prior art, the dual-cylinder linkage positioning and locking screw calibration device of this utility model has two sets of positioning cylinders and two sets of positioning plates to automatically complete the 90° angle workpiece constraint; and the movement does not require manual intervention; and the manual lead screw slide can be adjusted online to make the positioning locking screw hole axis of the two positioning plates and the workpiece mounting screw hole axis aligned. Since the electric screwdriver locking mechanism and the positioning locking screw hole are always aligned, the screwdriver bit axis line and the workpiece mounting screw hole axis line can be coincided, realizing the efficient connection of positioning and locking. That is, after the workpiece is positioned, the locking position is also automatically positioned. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of the dual-cylinder linkage positioning and screw-locking calibration device of this utility model.

[0012] Figure 2 This is a schematic diagram of the mating structure between the dual-cylinder linkage positioning screw-locking calibration device and the screw-locking table of this utility model.

[0013] Figure 3 This is a schematic diagram of the installation structure of the dual-cylinder linkage positioning locking screw calibration device and the positioning locking screw hole alignment component of this utility model.

[0014] Reference numerals: 1. First platform, 2. Second platform, 3. First positioning cylinder, 4. Second positioning cylinder, 5. First positioning plate, 6. Second positioning plate, 7. Positioning locking screw hole, 8. Electric screwdriver locking mechanism, 9. Sliding seat, 10. Slider, 11. Locking cylinder, 12. Guide rod, 13. Spring body, 14. Electric screwdriver, 15. Screw clamp, 16. Positioning rod, 17. Screw locking workbench, 18. Screw locking table, 19. Right angle table, 20. X-axis manual screw slide, 21. Y-axis manual screw slide, 22. Z-axis manual screw slide. Detailed Implementation

[0015] Example 1: like Figures 1 to 3 The dual-cylinder linkage positioning screw calibration device shown includes: The base unit includes a first plate 1 and a second plate 2, which are fixed to the outside of the screw-locking workbench 17. The positioning module includes a first positioning cylinder 3 fixed on a first platform 1 and a second positioning cylinder 4 fixed on a second platform 2; the first positioning cylinder 3 and the second positioning cylinder 4 are arranged in a horizontal orthogonal direction. A screw-locking positioning unit includes a first positioning plate 5 and a second positioning plate 6; the first positioning plate 5 and the second positioning plate 6 are respectively fixed on the piston rods of the first positioning cylinder 3 and the second positioning cylinder 4; the first positioning plate 5 and the second positioning plate 6 are arranged in a direct structure; the first positioning plate 5 and the second positioning plate 6 are provided with positioning screw-locking holes 7. The electric screwdriver locking mechanism 8 is provided in two sets and is arranged opposite to the positioning locking screw hole 7.

[0016] During installation, first determine the locking screw hole positions at the workpiece corners. Then, assemble the positioning module, specifically: the positioning module and the screw-locking positioning unit are pre-fixed, i.e., the first positioning cylinder 3 and the first positioning plate 5 are fixed, and the second positioning cylinder 4 and the second positioning plate 6 are fixed. Next, adjust the positions of the first platform 1 and the second platform 2 so that the locking screw hole positions at the workpiece corners are concentrically set with the positioning locking screw holes 7. After setting, directly fix the positions of the first platform 1 and the second platform 2. Next, perform workpiece corner calibration and positioning before locking, i.e., realize orthogonal positioning drive: the first positioning cylinder 3 extends with air, pushing the first positioning cylinder 4 and the second positioning plate 6. A positioning plate 5 moves along the X-axis, fitting one side of the 90° right angle side of the workpiece, thus constraining the workpiece's displacement in the X-axis direction. Next, the second positioning cylinder 4 is controlled to extend and push the second positioning plate 6 along the Y-axis, fitting the other side of the 90° right angle side of the workpiece, thus constraining the workpiece's displacement in the Y-axis direction. At this time, the first positioning plate 5 and the second positioning plate 6 form a 90° rigid constraint on the corner of the workpiece through the perpendicular right angle side, and the screw holes to be installed on the workpiece and the positioning locking screw holes 7 are precisely concentric with the center of the electric screwdriver, completing the one-time positioning of the workpiece corner and the screw locking position.

[0017] The electric screwdriver locking mechanism 8 includes a sliding base 9, on which two sliders 10 are slidably mounted. A locking cylinder 11 for driving the rear slider 10 is fixed to the sliding base 9. A guide rod 12 is fixed to the rear slider 10, passing through the front guide rod 12 and screwed with a limit nut. A spring body 13 is sleeved between the guide rod 12 and the sliders 10. An electric screwdriver 14 is fixed to the rear slider 10, and an air-blowing screwdriver chuck 15 is fixed to the front slider 10. The electric screwdriver 14... The screwdriver bit and screw chuck 15 are concentrically arranged. A positioning rod 16 is fixed to the front end of the front slider 10. The positioning rod 16 movably abuts against the outside of the positioning locking screw hole 7. During operation, after the corner of the workpiece is positioned, the locking cylinder 11 is activated. The locking cylinder 11 drives the rear slider 10 to slide linearly. When the rear slider 10 slides, the front slider 10 is driven to slide synchronously through the spring body 13 until the positioning rod 16 abuts against the outside of the first positioning plate 5 or the second positioning plate 6. At this time, the position of the screw chuck 15 can be limited. Then, as the locking cylinder 11 continues to move forward, the screw in the screw chuck 15 can be aligned and pushed into the locking screw hole at the corner of the workpiece. Then, the electric screwdriver 14 rotates, driving the screwdriver bit to rotate synchronously, thereby realizing the locking of the screw.

[0018] The positioning rod 16 has a columnar or strip-shaped structure, and its tail is screwed and fixed to the slider 10. By rotating the positioning rod 16 clockwise or counterclockwise, the position of the positioning rod 16 can be adjusted, thereby adjusting the distance between the screw clamp 15 and the locking screw hole.

[0019] The top surface of the screw-locking workbench 17 is fixed with a screw-locking table surface 18, and a screw-locking right angle is provided at the end of the screw-locking table surface 18; the top surfaces of the first positioning plate 5 and the second positioning plate 6 are higher than the top surface of the screw-locking table surface 18; during operation, since the first positioning cylinder 3 and the second positioning cylinder 4 are both driven by air pressure, there is a certain fluctuation. Therefore, the first positioning plate 5 and the second positioning plate 6 are limited to their travel termination positions by the edge of the screw-locking table surface 18. After the first positioning plate 5 and the second positioning plate 6 travel to press the two adjacent right angle sides of the screw-locking table surface 18, a 90° rigid constraint can be achieved.

[0020] It also includes a right-angled platform 19 fixed to the outside of the screw-locking workbench 17. Each of the two right-angled sides of the right-angled platform 19 is fixed with a mutually perpendicular X-direction manual screw slide 20 and a Y-direction manual screw slide 21. The sliding ends of the X-direction manual screw slide 20 and the Y-direction manual screw slide 21 are each fixed with a Z-direction manual screw slide 22. The two first platform plates 1 and the second platform plate 2 are respectively fixed to the sliding ends of the two Z-direction manual screw slides 22. During operation, the X-direction and Z-direction adjustments of the first positioning plate 5 can be achieved through the X-direction and Z-direction manual screw slides 20 and 22, ensuring that the positioning screw-locking hole 7 of the first positioning plate 5 is concentrically aligned with the screw-locking hole at the corner of the workpiece. The Y-direction and Z-direction adjustments of the second positioning plate 6 can be achieved through the Y-direction and Z-direction manual screw slides 21 and 22, ensuring that the positioning screw-locking hole 7 of the second positioning plate 6 is concentrically aligned with the screw-locking hole at the corner of the workpiece.

[0021] The above embodiments are merely preferred embodiments of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model are included within the scope of the present utility model.

Claims

1. A dual-cylinder linked positioning lock screw calibration device, characterized by: include: A base unit, comprising a first plate and a second plate, wherein the first plate and the second plate are fixed to the outside of the screw-locking workbench; A positioning module, comprising a first positioning cylinder fixed to a first plate and a second positioning cylinder fixed to a second plate; the first positioning cylinder and the second positioning cylinder are arranged in a horizontally orthogonal direction. A screw-locking positioning unit includes a first positioning plate and a second positioning plate; the first positioning plate and the second positioning plate are respectively fixed on the piston rods of the first positioning cylinder and the second positioning cylinder; the first positioning plate and the second positioning plate are arranged in a direct structure; and positioning screw-locking holes are opened on the first positioning plate and the second positioning plate. The electric screwdriver locking mechanism has two sets, which are arranged opposite to the positioning locking screw holes.

2. The dual-cylinder linked positioning lock screw calibrating device according to claim 1, characterized in that: The electric screwdriver locking mechanism includes a sliding base with two sliders slidably mounted on it. A locking cylinder for driving the rear slider is fixed on the sliding base. A guide rod is fixed on the rear slider, passing through the front guide rod and screwed with a limit nut. A spring body is sleeved between the guide rod and the slider. An electric screwdriver is fixed on the rear slider, and an air-blown screw clamp is fixed on the front slider. The screwdriver bit and the screw clamp are concentrically arranged. A positioning rod is fixed at the front end of the front slider, and the positioning rod movably abuts against the outside of the positioning locking hole.

3. The dual-cylinder linked positioning lock screw calibrating device according to claim 2, characterized in that: The positioning rod is a columnar or strip-shaped structure, and the tail of the positioning rod is screwed and fixed to the slider.

4. The dual-cylinder linked positioning lock screw calibrating device according to claim 1, characterized in that: The top surface of the screw-locking workbench is fixed with a screw-locking table surface, and a screw-locking right angle is provided at the end of the screw-locking table surface; the top surfaces of the first positioning plate and the second positioning plate are higher than the top surface of the screw-locking table surface.

5. The dual-cylinder linked positioning lock screw calibrating device according to claim 1, characterized in that: It also includes a right-angled platform fixed to the outside of the screw-locking workbench, wherein each of the two right-angled sides of the right-angled platform is fixed with a mutually perpendicular X-direction manual screw slide and a Y-direction manual screw slide; the sliding ends of the X-direction manual screw slide and the Y-direction manual screw slide are each fixed with a Z-direction manual screw slide; the two first platform plates and the second platform plate are respectively fixed to the sliding ends of the two Z-direction manual screw slides.

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