A laser marking fixture

Abstract

This utility model discloses a laser marking fixture, including a worktable, a marking support, a marking device, a workpiece support, and a length detection mechanism. The marking device is mounted on the worktable via the marking support, and the workpiece support is also mounted on the worktable. The length detection mechanism includes a first limiting block, a second limiting block, and a limiting cylinder. The first limiting block is located at one end of the worktable, and the second limiting block is located at the other end. A protrusion is provided on the side surface of the second limiting block closest to the first limiting block. A through hole is provided on the second limiting block at a location without the protrusion. The limiting cylinder is located on the side of the second limiting block furthest from the first limiting block. The workpiece is positioned between the first and second limiting blocks, and the piston rod of the limiting cylinder passes through the through hole in the second limiting block to clamp the workpiece in conjunction with the first limiting block. This utility model enables simultaneous laser marking and workpiece detection, preventing defective products from being shipped out.

Description

Technical Field

[0001] This utility model relates to the field of detection technology, specifically to a laser marking fixture. Background Technology

[0002] Laser marking fixtures are used to fix workpieces in place and then use laser marking equipment to mark the surface of the workpiece with designated marks. Existing marking fixtures only have the function of positioning and fixing the workpiece. However, in actual production, due to negligence in the preceding inspection process and the lack of inspection capabilities in the marking fixture, defective products are often shipped out when they are transferred to the marking process. Adding an inspection process after the marking process not only increases production time but also requires the fabrication of an additional inspection fixture, resulting in wasted costs. Utility Model Content

[0003] In view of this, this utility model discloses a laser marking fixture, the specific solution of which is as follows:

[0004] A laser marking fixture includes a worktable, a marking device, a workpiece support, and a length detection mechanism;

[0005] The marking device is mounted on the workbench via a marking support;

[0006] The workpiece support is mounted on the worktable and is used to support the workpiece.

[0007] The length detection mechanism includes a first limiting block, a second limiting block, and a limiting cylinder. The first limiting block is located at one end of the worktable, and the second limiting block is located at the other end of the worktable. A protrusion is provided on the side surface of the second limiting block near the first limiting block.

[0008] The second limiting block has a through hole at a position where there is no protrusion. The limiting cylinder is located on the side of the second limiting block away from the first limiting block. The workpiece is placed between the first limiting block and the second limiting block. The piston rod of the limiting cylinder passes through the through hole on the second limiting block and cooperates with the first limiting block to clamp the workpiece.

[0009] As a supplement to the technical solution of this utility model, the second limiting block includes a limiting block base and a length detection block. The length detection block is disposed on the limiting block base. The protrusion on the second limiting block is a protrusion on the length detection block extending toward the first limiting block. Both the limiting block base and the length detection block are provided with through holes for the cylinder piston rod to pass through.

[0010] As a supplement to the technical solution of this utility model, it also includes a detection pin mechanism and a detection pin base, wherein the detection pin base is disposed on the working platform and has a vertical through hole;

[0011] The detection pin mechanism includes a push block, a return spring, a sleeve, a telescopic rod, and a pin. The sleeve is embedded in the vertical through hole of the detection pin base. The upper end of the return spring is fixedly connected to the lower end of the sleeve. The lower end of the return spring is fixedly connected to the push block. The telescopic rod passes through the sleeve and the return spring in sequence, and its lower end is fixedly connected to the push block. The pin is located at the upper end of the telescopic rod.

[0012] As a supplement to the technical solution of this utility model, the detection pin base includes a base positioning block, a first adjusting pad, and a second adjusting pad. The base positioning block is fixedly set on the working platform. The first adjusting pad has an L-shaped structure. The first side of the first adjusting pad is connected to one side surface of the base positioning block. The second adjusting pad is connected to the second side of the first adjusting pad. The second adjusting pad is provided with a transverse pad protrusion. The pad protrusion is provided with a vertical through hole for embedding the sleeve of the detection pin mechanism.

[0013] As a supplement to the technical solution of this utility model, adjustment shims are provided between the first adjustment shim and the second adjustment shim, and between the first adjustment shim and the base positioning block.

[0014] As a supplement to the technical solution of this utility model, a positioning mechanism is also included. The positioning mechanism includes a positioning cylinder, a positioning cylinder support, and a limiting block. The positioning cylinder is mounted on the worktable via the positioning cylinder support. The limiting block is located on one side of the workpiece support, and the positioning cylinder support is located on the other side of the workpiece support. The positioning cylinder and the limiting block cooperate to clamp and position the workpiece.

[0015] As a supplement to the technical solution of this utility model, the positioning mechanism further includes a U-shaped top block and a connecting block; the connecting block is located at the end of the positioning cylinder piston rod and is fixedly connected to the positioning cylinder piston rod; the U-shaped top block has a U-shaped structure with two free ends at its front end for contacting the workpiece, and the rear end of the U-shaped top block is hinged to the connecting block.

[0016] Beneficial effects: The laser marking fixture disclosed in this utility model, through the cooperation of the first limiting block, the second limiting block, and the limiting cylinder of the length detection mechanism, uses the tolerance length of the protrusion and the go / no-go gauge to detect the length of the workpiece before marking, ensuring that the length of the workpiece is within the tolerance range, preventing unqualified products from entering the marking process, controlling product quality from the source, and preventing unqualified products from flowing out. At the same time, a detection pin mechanism is added to detect the position of the opening on the bottom surface of the workpiece. Whether the pin can be smoothly inserted into the through hole determines whether the position of the opening meets the standard, realizing dual detection of workpiece length and opening position, covering the key dimensions and positional accuracy of the workpiece, and improving the overall detection comprehensiveness. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 3 This is a schematic diagram of the second limiting block structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the length detection block structure of this utility model.

[0021] Figure 5 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0022] Figure 6 This is a schematic diagram of the detection pin mechanism of this utility model.

[0023] In the diagram: 1. Workbench, 2. Marker, 3. Workpiece support, 4. First limit block, 5. Second limit block, 6. Limit cylinder, 7. Limit block base, 8. Length detection block, 9. Protrusion, 10. Detection pin mechanism, 11. Detection pin base, 12. Push block, 13. Return spring, 14. Sleeve, 15. Telescopic rod, 16. Pin, 17. Base positioning block, 18. First adjusting pad, 19. Second adjusting pad, 20. Positioning cylinder, 21. Positioning cylinder support, 22. Limit stop, 23. U-shaped top block, 24. Connecting block, 25. Workpiece. Detailed Implementation

[0024] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] like Figures 1 to 6 As shown, a laser marking fixture includes a worktable 1, a marking support, a marking device 2, a workpiece 25 support 3, and a length detection mechanism.

[0027] The marking support is set on the workbench 1, and the marking device 2 is set on the marking support for marking the workpiece 25.

[0028] The workpiece 25 support base 3 is disposed on the workbench 1 and is used to support the workpiece 25 to be marked.

[0029] The length detection mechanism includes a first limiting block 4, a second limiting block 5, and a limiting cylinder 6. The first limiting block 4 and the second limiting block 5 are both disposed on the worktable 1. The workpiece 25 is located between the first limiting block 4 and the second limiting block 5, and one end of the workpiece 25 abuts against the first limiting block 4. The second limiting block 5 is provided with a protrusion 9 on one side surface of the workpiece 25, and the thickness of the protrusion 9 is set to the tolerance length.

[0030] The second limiting block 5 has a through hole at a position without the protrusion 9. The limiting cylinder 6 is located on the side of the second limiting block 5 away from the workpiece 25. The piston rod of the limiting cylinder 6 passes through the through hole on the second limiting block 5 and abuts against the end of the workpiece 25. The workpiece 25 is clamped by the first limiting block 4 and the piston rod of the limiting cylinder 6. In this state, the end of the workpiece 25 near the second limiting block 5 is directly above the protrusion 9. When a go / no-go gauge can pass smoothly between the workpiece 25 and the second limiting block 5, it proves that the length of the workpiece 25 is within the tolerance range. The above "directly above" means that when the end of the workpiece 25 near the second limiting block 5 moves vertically downward, it can contact the protrusion 9.

[0031] With the above settings, the length of workpiece 25 can be detected before marking, preventing defective products from being shipped out, and enabling a single marking fixture to perform both marking and inspection functions.

[0032] As a supplement to the above technical solution, the second limiting block 5 includes a limiting block base 7 and a length detection block 8. The length detection block 8 is disposed on the side of the limiting block base 7 near the workpiece 25, and has a protrusion 9 extending toward the workpiece 25. Both the limiting block base 7 and the length detection block 8 have through holes for the cylinder piston rod to pass through. With the above configuration, the length detection block 8 can be adaptively replaced according to the length of different workpieces 25 to be detected.

[0033] As a preferred embodiment of this utility model, it further includes a detection pin mechanism 10 and a detection pin base 11 for detecting the position of the opening on the bottom surface of the workpiece 25. The detection pin base 11 is disposed on the working platform and located below the workpiece 25, and has a vertical through hole. The detection pin mechanism 10 includes a push block 12, a return spring 13, a sleeve 14, a telescopic rod 15, and a pin 16. The sleeve 14 is embedded in the vertical through hole of the detection pin base 11. The upper end of the return spring 13 is fixedly connected to the lower end of the sleeve 14, and the lower end of the return spring 13 is fixedly connected to the push block 12. The telescopic rod 15 passes through the sleeve 14 and the return spring 13 in sequence, and its lower end is fixedly connected to the push block 12. With the above arrangement, the push block 12 can be pushed to smoothly insert the pin 16 into the through hole on the workpiece 25 to detect the position of the through hole on the workpiece 25. By detecting the setting of the pin base 11, when the pin 16 can be smoothly inserted into the through hole at the bottom of the workpiece 25, it indicates that the position of the through hole on the workpiece 25 meets the opening standard; if it cannot be smoothly inserted, it indicates that the opening position does not meet the standard.

[0034] As a preferred technical solution of this utility model, the detection pin base 11 includes a base positioning block 17, a first adjusting pad 18, and a second adjusting pad 19. The base positioning block 17 is fixedly set on the working platform. The first adjusting pad 18 has an L-shaped structure. The first side of the first adjusting pad 18 is connected to one side surface of the base positioning block 17. The second adjusting pad 19 is connected to the second side of the first adjusting pad 18. The second adjusting pad 19 is provided with a horizontal pad protrusion. The pad protrusion is provided with a vertical through hole for embedding the sleeve 14 of the detection pin mechanism 10.

[0035] Preferably, adjusting shims are provided between the first adjusting shim 18 and the second adjusting shim 19, and between the first adjusting shim 18 and the base positioning block 17. The adjusting shim between the first adjusting shim 18 and the base positioning block 17 allows for adjustment in the X-axis direction of the detection pin mechanism 10; the adjusting shim between the first adjusting shim 18 and the second adjusting shim 19 allows for adjustment in the Y-axis direction; and the screw connection between the second adjusting shim 19 and the first adjusting shim 18 allows for adjustment in the Z-axis direction. In summary, this allows for fine-tuning of the entire detection pin mechanism 10 in a three-coordinate system.

[0036] As a preferred technical solution of this utility model, it also includes a positioning mechanism, which includes a positioning cylinder 20, a positioning cylinder support 21, and a limiting block 22. The positioning cylinder 20 is supported on the worktable 1, the positioning cylinder 20 is mounted on the positioning cylinder support 21, the limiting block 22 is mounted on one side of the workpiece 25 support 3, and the positioning cylinder 20 is located on the other side of the workpiece 25 support 3. This allows the limiting block 22 and the positioning cylinder 20 to be respectively positioned on both sides of the workpiece 25. When the piston rod of the positioning cylinder 20 extends to press against the workpiece 25, the limiting block 22 limits the workpiece 25, thereby enabling the limiting block 22 and the positioning cylinder support 21 to cooperate in clamping and positioning the workpiece 25.

[0037] As a supplement to the above technical solution, the positioning mechanism further includes a U-shaped top block 23 and a connecting block 24. The connecting block 24 is located at the end of the piston rod of the positioning cylinder 20 and is fixedly connected to the piston rod of the positioning cylinder 20. The U-shaped top block 23 has a U-shaped structure with two free ends at its front end for contacting the workpiece 25. The rear end of the U-shaped top block 23 is hinged to the connecting block 24, allowing the U-shaped top block 23 to rotate relative to the connecting block 24. Figure 2 As shown, when the installation position of the positioning cylinder 20 deviates, if the U-shaped top block 23 and the connecting block 24 are fixedly connected, one of the two free ends of the U-shaped top block 23 will not contact the workpiece 25. To avoid the above technical problem, the U-shaped top block 23 and the connecting block 24 are set to a hinged connection to ensure that when the installation position of the positioning cylinder 20 deviates, both free ends of the U-shaped top block 23 can contact the workpiece 25, thereby increasing the contact area and ensuring the positioning effect.

[0038] The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be included within the protection scope of the present invention.

Claims

1. A laser marking fixture, characterized in that, Includes a workbench (1), a marking device (2), a workpiece support base (3), and a length detection mechanism; The marking device (2) is mounted on the workbench (1) via a marking support; The workpiece support base (3) is set on the worktable (1) and is used to support the workpiece; The length detection mechanism includes a first limiting block (4), a second limiting block (5), and a limiting cylinder (6). The first limiting block (4) is located at one end of the workbench (1), and the second limiting block (5) is located at the other end of the workbench (1). The side surface of the second limiting block (5) near the first limiting block (4) is provided with a protrusion (9). The second limiting block (5) has a through hole at the position where there is no protrusion (9). The limiting cylinder (6) is located on the side of the second limiting block (5) away from the first limiting block (4). The workpiece is placed between the first limiting block (4) and the second limiting block (5). The piston rod of the limiting cylinder (6) passes through the through hole on the second limiting block (5) and cooperates with the first limiting block (4) to clamp the workpiece.

2. The laser marking fixture according to claim 1, characterized in that, The second limiting block (5) includes a limiting block base (7) and a length detection block (8). The length detection block (8) is disposed on the limiting block base (7). The protrusion (9) on the second limiting block (5) is a protrusion on the length detection block (8) extending toward the first limiting block (4). Both the limiting block base (7) and the length detection block (8) are provided with through holes for the cylinder piston rod to pass through.

3. The laser marking fixture according to claim 1, characterized in that, It also includes a detection pin mechanism (10) and a detection pin base (11), wherein the detection pin base (11) is set on the working platform and has a vertical through hole; The detection pin mechanism (10) includes a push block (12), a reset spring (13), a sleeve (14), a telescopic rod (15), and a pin (16). The sleeve (14) is embedded in the vertical through hole of the detection pin base (11). The upper end of the reset spring (13) is fixedly connected to the lower end of the sleeve (14). The lower end of the reset spring (13) is fixedly connected to the push block (12). The telescopic rod (15) passes through the sleeve (14) and the reset spring (13) in sequence. Its lower end is fixedly connected to the push block (12). The pin (16) is located at the upper end of the telescopic rod (15).

4. The laser marking fixture according to claim 3, characterized in that, The detection pin base (11) includes a base positioning block (17), a first adjusting pad (18), and a second adjusting pad (19). The base positioning block (17) is fixedly set on the working platform. The first adjusting pad (18) has an L-shaped structure. The first side of the first adjusting pad (18) is connected to one side surface of the base positioning block (17). The second adjusting pad (19) is connected to the second side of the first adjusting pad (18). The second adjusting pad (19) is provided with a horizontal pad protrusion. The pad protrusion is provided with a vertical through hole for embedding the sleeve (14) of the detection pin mechanism (10).

5. The laser marking fixture according to claim 4, characterized in that, Adjusting shims are provided between the first adjusting shim (18) and the second adjusting shim (19), and between the first adjusting shim (18) and the base positioning block (17).

6. The laser marking fixture according to claim 4, characterized in that, It also includes a positioning mechanism, which includes a positioning cylinder (20), a positioning cylinder support (21), and a limiting block (22). The positioning cylinder (20) is mounted on the worktable (1) via a positioning cylinder (20) support. The limiting block (22) is located on one side of the workpiece support (3), and the positioning cylinder support (21) is located on the other side of the workpiece support (3). The positioning cylinder (20) and the limiting block (22) work together to clamp and position the workpiece.

7. A laser marking fixture according to claim 6, characterized in that, The positioning mechanism also includes a U-shaped top block (23) and a connecting block (24); the connecting block (24) is located at the end of the piston rod of the positioning cylinder (20) and is fixedly connected to the piston rod of the positioning cylinder (20); the U-shaped top block (23) is a U-shaped structure with two free ends at its front end for contacting the workpiece, and the rear end of the U-shaped top block (23) is hinged to the connecting block (24).

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