Laser marking device

Abstract

The invention relates to a laser marking device, and relates to the technical field of marking equipment. The laser marking device comprises a workbench and a positioning and clamping module, a laser marking head is arranged above the workbench, the positioning and clamping module is installed on the workbench and located below the laser marking head, the positioning and clamping module comprises two clamping bodies which are symmetrically arranged and can be synchronously close to or away from each other, and a clamping channel is formed between the two clamping bodies; a laser marking head is arranged on the workbench, a clamping channel is arranged on the workbench, a section of marking positioning area vertically opposite to the laser marking head is arranged in the clamping channel, a material storage box is installed on one side of the clamping channel and provided with a material storage cavity, a discharging port is formed in the material storage box and faces and directly faces the clamping channel, and a pushing mechanism is further arranged on the workbench and comprises a pushing plate. And the push plate is used for pushing the to-be-marked product located at the bottommost part in the material storage cavity to penetrate out of the discharging opening and move to the marking positioning area. The feeding and positioning process is more coherent, and the production efficiency can be improved.

Description

Technical Field

[0001] This invention relates to the field of marking equipment technology, and in particular to a laser marking device. Background Technology

[0002] A laser marking machine is a device that uses a high-energy-density laser beam to permanently mark the surface of various materials. It uses the laser to induce physical or chemical changes on the material surface, thereby etching out intricate patterns, text, symbols, serial numbers, QR codes, barcodes, and more.

[0003] For example, the laser marking machine disclosed in patent CN218903997U includes a worktable with a marking component fixedly mounted on its upper surface. A groove is formed on the upper surface of the worktable, and a second lead screw is rotatably connected within the groove. A second motor is fixedly mounted inside the worktable, and the output shaft of the second motor is fixedly connected to the second lead screw. A placement component is threadedly connected to the outer circumference of the second lead screw, and the placement component is slidably mounted on the upper surface of the worktable, cooperating with the marking component. This marking machine, through the movement of the placement component, causes the product to be pushed by a clamping or limiting component during transport, achieving product centering during movement and effectively reducing the time spent on centering.

[0004] However, the aforementioned marking machines typically require manual placement of the products to be marked onto the second placement plate. This manual loading is slow, as each workpiece needs to be manually picked up and placed, consuming a significant amount of time and making the loading process a bottleneck in the entire production flow. Furthermore, because the equipment requires waiting for the placement component to reset to the loading area before moving it to the marking area to place and clamp the product, the loading and clamping time is further extended, significantly reducing production efficiency. Summary of the Invention

[0005] This invention provides a laser marking device to solve the technical problem that existing laser marking devices require manual feeding, and each feeding requires waiting for the placement component to reset to the feeding area before each feeding, and after the product is placed, waiting for the placement component to move to the marking area to achieve positioning and clamping of the product, resulting in slow feeding and positioning clamping processes and affecting overall production efficiency.

[0006] To solve the above problems, the laser marking device provided by the present invention adopts the following technical solution: A laser marking device, comprising: The workbench is equipped with a laser marking head on top; The positioning and clamping module is installed on the worktable, located below the laser marking head; The positioning and clamping module includes two symmetrically arranged clamping bodies that can move closer or further away from each other synchronously. A clamping channel is formed between the two clamping bodies, and the clamping channel has a marking and positioning area that is directly opposite the laser marking head. A storage box is installed on one side of the clamping channel. The storage box has a storage cavity for storing stacked products to be marked. The storage box is provided with a discharge port facing and directly opposite the clamping channel. The discharge port is used to allow the product to be marked at the bottom of the storage cavity to pass through. The workbench is also equipped with a pushing mechanism, which includes a push plate that can reciprocate along the extension direction of the clamping channel. The push plate is used to push the product to be marked at the bottom of the storage cavity out of the discharge port and move to the marking positioning area. The two clamping bodies are used to move closer to each other when the product to be marked moves to the marking positioning area, and lock their positions after clamping the first product to be marked so that the width of the clamping channel remains fixed.

[0007] Using the above technical solution, products to be marked are stacked vertically in the storage cavity. A pusher plate moves the bottom product in the storage cavity from the discharge port to between two clamping bodies. When the pusher plate stops pushing, the product moves to the marking positioning area. At this point, the two clamping bodies are driven to move closer together, clamping the product and achieving product positioning. Once the clamping bodies are in place, they stop moving and remain in a fixed position. Subsequent pusher plates push the product into the marking positioning area within the clamping channel, achieving positioning without needing to control the reciprocating movement of the two clamping bodies. Compared with existing technologies, the automatic feeding of products is achieved by setting up a storage cavity and a pusher plate, eliminating the need for manual feeding of each product, thus improving processing efficiency. After the first product, each product is automatically positioned after being pushed to the marking positioning area by the pusher plate. The movement of the pusher plate simultaneously achieves feeding and positioning, making the connection between the feeding and positioning stages more continuous, shortening processing time, and further improving processing efficiency.

[0008] Furthermore, the positioning and clamping module also includes a base, a screw, a locking nut, a movable block, and a connecting rod. The base is mounted on the worktable. The screw is parallel to the clamping channel and positioned between the two clamping bodies, and can be elastically slidably mounted on the base along its own axis. The locking nut is screwed onto the screw. The movable block is connected to the screw. Two connecting rods are symmetrically arranged on both sides of the screw. One end of the connecting rod is hinged to the movable block, and the other end is hinged to the clamping body. When the locking nut is screwed on, the screw moves along its own axis, causing the connecting rod to swing. The connecting rod causes the two clamping bodies to move closer to each other synchronously, clamping the product in the marking and positioning area.

[0009] Using the above technical solution, when the locking nut is rotated, it drives the screw to move axially, which in turn drives the movable block to move. The movable block, through two connecting rods, causes the clamping parts to move closer or further apart. By tightening the nut, the distance between the two clamping parts can be adjusted, making operation convenient. The thread has a self-locking function; after the position of the clamping parts is adjusted, they can automatically lock in that position and will not slip due to external force, making it more stable and reliable.

[0010] Furthermore, a lock nut is screwed onto the screw to tighten the locking nut.

[0011] Using the above technical solution, the anti-loosening nut is used to prevent the locking nut from loosening, thus avoiding the locking nut from loosening after long-term use and causing the position of the clamping part to change, affecting the positioning accuracy.

[0012] Furthermore, the clamping body is provided with a U-shaped slot with an opening facing the other clamping body. The U-shaped slot is used for the side of the product to be inserted, and the area between the two U-shaped slots forms a clamping channel.

[0013] By adopting the above technical solution, the product is inserted into the U-shaped slot, which blocks the top of the product and allows it to move only in the horizontal direction, thus avoiding the phenomenon of two adjacent products stacking together during the process of pushing the product.

[0014] Furthermore, the clamping body includes a support block and a stop block. The support block has a horizontal support surface, and the stop block has a vertical stop surface and a limiting surface vertically disposed on the top of the stop surface. The limiting surface is located above the support surface. A U-shaped slot for the side of the product to be inserted is formed between the limiting surface, the stop surface, and the support surface. The vertical position of the stop block is adjustable so that the width of the U-shaped slot is adjustable.

[0015] By adopting the above technical solution, the width of the U-shaped slot can be adjusted, which allows products of different thicknesses and sizes to be inserted, thus expanding the range of applications.

[0016] Furthermore, the pushing mechanism also includes a pushing cylinder and a mounting base. The mounting base is fixed to the output end of the pushing cylinder. The push plate is rotated around the horizontal axis and mounted on the mounting base. The bottom end of the push plate is connected to an adjusting plate that is inclined toward the clamping channel. A top block is provided on the base on the side of the storage box facing away from the clamping channel. The bottom wall of the storage box is provided with a sliding hole that runs parallel to the clamping channel and passes through vertically. The sliding hole is connected to the discharge port. The pushing cylinder can drive the push plate to slide toward the clamping channel in the sliding hole, so as to move the product to be marked at the bottom of the storage cavity to the marking positioning area. After the push plate is reset, the adjusting plate is pushed by the top block, causing the baffle to swing to a vertical state.

[0017] Using the above technical solution, when the push plate moves along the sliding hole toward the clamping channel, it pushes out the product at the bottom of the storage cavity. When the push plate resets, it is blocked by the product at the bottom of the storage cavity and rotates, thereby avoiding the product and resetting smoothly. When the push plate resets, the adjusting plate is pushed by the top block to rotate to a vertical state, ensuring that the product can be pushed out in the next movement.

[0018] Furthermore, a collection mechanism is provided on the side of the clamping channel facing away from the storage box. The collection mechanism includes a collection box, a baffle assembly, a movable plate, an elastic element, and a pushing assembly. The side of the collection box facing the clamping channel is open. The baffle assembly is located on the side of the collection box facing the clamping channel and has an inlet at the same height as the clamping channel. The movable plate is slidably installed in the collection box along the extension direction of the clamping channel. The elastic element is connected between the movable plate and the collection box and applies an elastic force to the movable plate toward the baffle assembly so that the marked product is clamped between the movable plate and the baffle assembly. The pushing assembly is used to push the movable plate away from the clamping channel when the marked product enters the collection box, so as to facilitate the product falling.

[0019] Using the above technical solution, the marked product enters the collection box from the inlet, gradually pushing the movable plate away from the baffle assembly, so that the product gradually enters the collection box completely and is positioned between the movable plate and the baffle assembly. The pushing assembly can push the movable plate away from the clamping channel, so that the movable plate moves to a distance greater than the length of the product from the baffle assembly. In this way, the product can fall freely without the pressure of the movable plate, ensuring that the product can fall smoothly to the bottom of the collection box without being stuck between the movable plate and the baffle assembly.

[0020] Furthermore, the push assembly includes a push rod and a push tooth. The push rod extends along the extension direction of the clamping channel and is elastically slidably mounted on the positioning clamping module along the extension direction of the clamping channel. The push rod and the push plate block each other in the extension direction of the clamping channel. The push tooth extends along the extension direction of the clamping channel, is located beside the movable plate, and is elastically slidably mounted on the collection box in a direction inclined towards the movable plate away from the clamping channel. Multiple locking teeth are evenly spaced on the side of the push tooth facing the movable plate. The edge of the movable plate corresponding to the push tooth engages with the locking teeth. The push tooth engages with the push rod. When the push plate moves towards the marking positioning area, it drives the push rod to push the push tooth away from the marking positioning area. The push tooth moves towards the movable plate, causing the movable plate to engage between two adjacent locking teeth, thus driving the movable plate to move away from the stop assembly.

[0021] By adopting the above technical solution, the pusher plate not only pushes the product feed, but also pushes the movable plate to move away from the backstop assembly through the pusher rack. There is no need to set up a separate drive structure to drive the movable plate to move away from the backstop assembly, which makes the equipment structure simpler and the power cost lower.

[0022] Furthermore, the material blocking assembly includes two material blocking columns symmetrically arranged on both sides of the clamping channel. Each material blocking column includes a material blocking plate parallel to the movable plate and a limiting plate vertically connected to the side of the material blocking plate facing away from the other material blocking column. The spacing between the two limiting plates is the same as the clamping channel and they are directly opposite the clamping channel.

[0023] Using the above technical solution, after the product enters the collection box, the product is blocked between two limiting plates, so that the stacked products can also be aligned in the direction perpendicular to the clamping channel, making the product stacking more neat.

[0024] Furthermore, two baffle posts are slidably installed on the collection box in a direction perpendicular to the clamping channel. The baffle posts are provided with slot 1 with an opening facing the clamping component, and the clamping component is provided with slot 2 with an opening facing the baffle assembly. A positioning pin is inserted between slot 1 and the corresponding slot 2.

[0025] By using the above technical solution, one half of the positioning pin is inserted into slot one or slot two, and the other half of the positioning pin is inserted into the corresponding slot two or slot one. This can achieve the positioning of the stop post, so that the width of the clamping channel matches the spacing of the stop posts, and can be applied to products of different widths.

[0026] The beneficial effects of the laser marking device provided by this invention are: It improves the continuity of the feeding and positioning processes, thereby increasing processing efficiency. It enables the neat stacking of processed products, facilitating product collection. Furthermore, it can process products of various sizes, broadening its applicability. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of a laser marking device provided by the present invention; Figure 2 A front view of the positioning and clamping module, pushing mechanism and collecting mechanism in a laser marking device provided by the present invention; Figure 3 A top view of the positioning and clamping module, pushing mechanism and collecting mechanism in a laser marking device provided by the present invention; Figure 4 A three-dimensional structural diagram of the positioning and clamping module and the pushing mechanism in a laser marking device provided by the present invention; Figure 5 A three-dimensional structural diagram of the base in a laser marking device provided by the present invention; Figure 6 A three-dimensional structural diagram of the base and some components mounted on it in a laser marking device provided by the present invention; Figure 7A front view of a partial structure of the positioning and clamping module in a laser marking device provided by the present invention; Figure 8 This is a three-dimensional structural diagram of the clamping body in a laser marking device provided by the present invention; Figure 9 A three-dimensional structural diagram of a storage bin in a laser marking device provided by the present invention; Figure 10 A three-dimensional structural diagram of the collection mechanism in a laser marking device provided by the present invention; Figure 11 A front view of the collection mechanism in a laser marking device provided by the present invention; Figure 12 Right view of the collection mechanism in a laser marking device provided by the present invention; Figure 13 Cross-sectional view of the collection mechanism in a laser marking device provided by the present invention. Figure 1 ; Figure 14 Cross-sectional view of the collection mechanism in a laser marking device provided by the present invention. Figure 2 ; Figure 15 for Figure 14 Enlarged structural diagram at point A; Figure 16 A front view of the mounting base and push plate in a laser marking device provided by the present invention; Figure 17 The image shows a right view of the mounting base and push plate in a laser marking device provided by the present invention.

[0028] Explanation of reference numerals in the attached figures: 1. Workbench; 2. Laser marking head; 3. Storage bin; 301. Positioning slide; 302. Notch 1; 303. Sliding hole; 304. Discharge port; 305. Notch 2; 4. Collection box; 5. Push cylinder; 6. Base; 601. Guide rail; 602. Positioning block; 603. Guide groove; 604. Side guide groove; 605. Strip-shaped receiving groove; 606. Top block; 607. Longitudinal section; 608. Positioning plate; 609. Transverse section; 7. Movable plate; 701. Side; 8. Telescopic rod; 9. Elastic element 1; 10. Screw; 11. Positioning elastic element; 12. Movable block; 13. Connecting rod; 14. Stop block; 141. Connecting hole; 142. Threaded hole 2 ; 143. Stop surface; 144. Limiting surface; 15. Guide shaft; 16. Push cylinder; 17. Support block; 171. Threaded hole one; 172. Support surface; 18. Locking nut; 19. Anti-loosening nut; 20. Push rod; 21. Push plate; 22. Mounting seat; 23. U-shaped groove; 24. Track; 25. Stop plate; 251. U-shaped notch; 252. Slot one; 26. Push rod; 27. Limiting plate; 28. Flip plate; 29. ​​C-shaped push block; 30. Push plate; 31. Extension rod; 32. Elastic element two; 33. Push tooth; 331. Guide groove; 332. Clamping tooth; 34. Guide column; 35. Positioning pin; 36. Adjusting plate. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0030] The following is one embodiment of a laser marking device provided by the present invention: like Figures 1-15 As shown, a laser marking device includes a worktable 1, a laser marking mechanism, a positioning and clamping module, a storage box 3, a pushing mechanism, and a collecting mechanism.

[0031] like Figure 1 As shown, the workbench 1 is arranged on the ground, and the laser marking mechanism is arranged on the workbench 1. The laser marking mechanism includes a laser marking head 2, which is located above the workbench 1.

[0032] like Figure 2 , Figure 3 As shown, the positioning and clamping module includes a base 6, a clamping body, a screw 10, a locking nut 18, a movable block 12, and a connecting rod 13.

[0033] The base 6 is bolted to the worktable 1, such as... Figure 5 As shown, the base 6 has a receiving cavity, and a T-shaped support is installed inside the receiving cavity. The support includes a longitudinal section 607 and a transverse section 609. The longitudinal section 607 is located in the middle of the receiving cavity, and the transverse section 609 is located to the right of the longitudinal section 607. A guide groove 603 extending to the left and right is provided in the middle of the transverse section 609. The two opposite side walls of the guide groove 603 are provided with side guide grooves extending to the left and right. A top block 606 is also provided at the right end of the guide groove 603. A guide rail 601 extending to the left and right is provided inside the receiving cavity on the left side of the longitudinal section 607. Two guide shafts extending to the front and back are connected above the guide rail 601 inside the receiving cavity. The two outer side walls of the base 6 are also symmetrically provided with strip-shaped receiving grooves extending to the left and right.

[0034] like Figure 4 As shown, the clamping bodies are provided in two sets, symmetrically arranged in the receiving groove. Figure 7 , Figure 8 As shown, the clamping body includes a support block 17 and a stop block 14. The support block 17 has an L-shaped cross-section and a horizontal support surface 172. The stop block 14 is located in a recessed groove in the support block 17 and has a vertical stop surface 143. The top of the stop surface 143 has a protruding edge, and the bottom surface of the protruding edge is a limiting surface 144. A U-shaped groove 23 is formed between the support surface 172, the stop surface 143, and the limiting surface 144. The area between the U-shaped groove 23 in the two clamping bodies forms a clamping channel. A part of the clamping channel is directly aligned with the laser marking head 2, and this area is the marking positioning area. The two guide shafts 15 mentioned above pass through the support block 17 to guide the support block 17 to slide on the base 6.

[0035] The support block 17 has a through-hole 171, and the stop block 14 has a through-hole 141 and a through-hole 142. The through-hole 141 and the through-hole 171 are coaxial. A height adjustment bolt is threaded through the through-hole 142. By turning the height adjustment bolt, the gap between the stop block 14 and the support block 17 can be adjusted, thereby adjusting the width of the U-shaped slot 23. Connecting bolts are inserted into the corresponding through-holes 141 and through-hole 171 to connect the support block 17 and the stop block 14 into one unit. A left-facing slot 2 is opened on the left side wall of the stop block 14, and a positioning pin 35 is inserted into the slot 2.

[0036] like Figure 4As shown, the screw 10 passes through the left side panel of the base 6. The locking nut 18 and the anti-loosening nut 19 are screwed onto the part of the screw 10 located outside the base 6. The movable block 12 is fixedly connected to one end of the screw 10 located in the receiving cavity. The movable block 12 is guided and slidably mounted on the guide rail 601. A positioning elastic element 11 is provided between the movable block 12 and the left side panel of the base 6. The positioning elastic element 11 applies a rightward elastic force to the movable block 12.

[0037] There are two connecting rods 13, which are arranged symmetrically front and back. One end of the connecting rod 13 is hinged to the movable block 12, and the other end is hinged to the support block 17. By rotating the locking nut 18, the screw 10 can be moved. The movable block 12 drives the support block 17 to move back and forth through the connecting rod 13, thereby controlling the two sets of clamping bodies to move closer or further apart synchronously.

[0038] like Figure 2 , Figure 3 , Figure 4 As shown, the storage bin 3 is mounted on the base 6. Figure 9 As shown, the storage bin 3 has a storage cavity with an open top. On the right side wall of the storage bin 3, there are two notches, 302 and 305, connected sequentially from top to bottom. The width of notch 305 is smaller than that of notch 302, and the width of the storage cavity is the same as that of notch 302. A sliding hole 303 extending laterally is located in the middle of the bottom wall of the storage bin 3, penetrating the bottom wall. A discharge port 304 is located at the bottom of the left side wall of the storage bin 3. The discharge port 304 is higher than the bottom wall of the storage bin 3 and communicates with the sliding hole 303, directly opposite the aforementioned clamping channel. Positioning grooves 301 extending vertically are provided on both the front and rear side walls of the storage bin 3. The storage bin 3 is secured to the positioning block 602 on the base 6 via the positioning grooves 301, and the bottom surface of the storage bin 3 rests against the positioning plate 608.

[0039] like Figure 6 As shown, the pushing mechanism includes a pushing cylinder 5, a mounting base 22, and a push plate 21. The pushing cylinder 5 is fixedly mounted on the right side wall of the base 6, and the mounting base 22 is slidably mounted in the guide groove 603. Figure 16 , Figure 17 As shown, two extension rods 31 are symmetrically connected to the front and rear sides of the mounting base 22, and the two extension rods 31 are respectively inserted into the two side guide grooves 604. The mounting base 22 is fixedly connected to the output end of the push cylinder 5, which can drive the mounting base 22 to slide back and forth in the guide groove 603.

[0040] The push plate 21 is rotatably mounted on the mounting base 22 around a rotating axis extending forward and backward. An inclined adjusting plate 36 is connected to the bottom end of the push plate 21, forming an obtuse angle with the push plate 21. When the adjusting plate 36 contacts the top block 606, the top block 606 pushes the adjusting plate 36, causing the push plate 21 to swing to a vertical position. When the push plate 21 is in a vertical position, its top end is higher than the mounting base 22. In this state, when the push plate 21 is moved to the left by the pushing cylinder 5, its top end can insert into the sliding hole 303. The height of the top end of the push plate 21 is just enough to push the product at the bottom of the storage cavity to the left, pushing the product from the discharge port 304 into the clamping channel, and finally to the marking and positioning area.

[0041] When the pusher plate 21 moves to the right, it is pushed by the product in the storage cavity and swings. The pusher plate 21 swings until its top is lower than the product and then passes over the product to reset. When the adjusting plate 36 moves to contact the top block 606, it is pushed by the top block 606 and drives the pusher plate 21 to swing again. The pusher plate 21 swings to a vertical position to facilitate the next feeding.

[0042] like Figure 2 , Figure 3 As shown, the collection mechanism is installed on the workbench 1 and is located to the left of the positioning and clamping module. Figure 10 As shown, the collection mechanism includes a collection box 4, a baffle assembly, a movable plate 7, and a push assembly.

[0043] like Figure 10 , Figure 11 , Figure 12 As shown, the right end and rear end of the collection box 4 are open. Two parallel tracks 24 are installed on the right side of the collection box 4, and both tracks 24 extend in the front-back direction.

[0044] The material-stopping assembly includes two symmetrically arranged material-stopping posts, which extend vertically and include a vertically connected material-stopping plate 25 and a limiting plate 27. The limiting plate 27 is located on the side of the material-stopping plate 25 facing away from the other material-stopping post. The material-stopping plate 25 is slidably connected to the track 24 and has a slot 252 with its opening facing right. The two material-stopping posts are respectively fitted onto the positioning pins 35 on the two sets of clamping bodies through the two slots 252, thereby achieving the positioning of the material-stopping posts. After the material-stopping posts are positioned, the gap between the two limiting plates 27 is the same width as the clamping channel. The material-stopping plate 25 has a U-shaped notch 251 with its opening facing the other material-stopping plate 25. The two U-shaped notches 251 form an inlet on the material-stopping assembly, which is the same width as the clamping channel and directly opposite it.

[0045] The aforementioned limiting plate 27 in the rear baffle column includes a flip plate 28 that is elastically hinged to the body of the limiting plate 27 by a torsion spring, so as to push the stacked products between the two limiting plates 27 backward.

[0046] The movable plate 7 is slidably installed in the collection box 4 in the left and right direction. A telescopic rod 8 is connected between the movable plate 7 and the left side wall of the collection box 4. An elastic element 9 is also sleeved on the outside of the telescopic rod 8. The elastic element 9 applies a rightward elastic force to the movable plate 7, so that the movable plate 7 can stick to the baffle column.

[0047] The jacking assembly includes two jacking rods 26 and two jacking racks 33. The jacking rods 26 are respectively mounted elastically in two strip-shaped receiving slots 605 on the base 6 via springs in the left-right direction. Figure 6 As shown, the right end of the push rod 26 is vertically connected to a front-to-back extending support rod 20. The end of the support rod 20 facing away from the push rod 26 passes through the aforementioned side guide groove 604. The extension rod 31 and the portion of the support rod 20 located in the side guide groove 604 mutually block each other in the left-right direction. As the extension rod 31 moves to the left with the mounting base 22, it can drive the support rod 20 to move to the left, thereby driving the push rod 26 to move to the left.

[0048] like Figure 13 , Figure 14 As shown, a C-shaped push block 29 with its opening facing left is slidably installed on the right side of the collection box 4 along the left-right direction. There are four push rods 33, all extending in the left-right direction and located on the upper and lower sides of the front and rear of the collection box 4, respectively. The upper and lower ends of the C-shaped push blocks 29 correspond to the upper and lower push rods 33 on the same side of the collection box 4, respectively. The two push rods 26 mentioned above correspond to the two C-shaped push blocks 29 on the left and right, respectively. Each push rod 33 is connected to the collection box 4 by an elastic element 32, such as... Figure 15 As shown, the push rod 33 is provided with two guide grooves 331 arranged at intervals on the left and right, and the collection box 4 is provided with guide posts 34. Each guide post 34 is inserted into each guide groove 331, so that the push rod 33 can slide along the extension direction of the guide groove 331.

[0049] The push rod 33 has multiple locking teeth 332 on the side facing the middle of the collection box 4. A tooth groove is formed between two adjacent locking teeth 332. The movable plate 7 has a side 701 with a cross-sectional shape that matches the shape of the tooth groove. When the push rod 26 is driven to move to the left, it pushes the C-shaped push block 29 to move to the left. The C-shaped push block 29 pushes the push rod 33 to move to the left. Under the action of the guide groove 331 and the guide post 34, the push rod 33 moves to the left and also moves towards the movable plate 7, so that the side 701 of the movable plate 7 is locked into the slot, thereby driving the movable plate 7 to move to the left.

[0050] like Figure 3 , Figure 10As shown, a pusher cylinder 16 is installed on the front side of the collection box 4. An L-shaped pusher plate 30 is also provided inside the collection box 4. Products entering the collection box 4 are piled up on the pusher plate 30. The pusher plate 30 is connected to the output end of the pusher cylinder 16. The pusher cylinder 16 can drive the pusher plate 30 to move backward, thereby moving the products piled on the pusher plate 30 backward and removing the products from the collection box 4.

[0051] This invention is used for laser printing on the surface of plate-shaped products. In use, multiple products to be processed are first stacked in the storage cavity. When placing the products, hold the products and insert them into the storage cavity through notch 302. Then, move the products downwards along notch 305 to move them to the bottom of the storage cavity. Repeat the above steps to complete the stacking of products to be marked.

[0052] Activate the push cylinder 5, which pushes the mounting base 22 to the left, causing the push plate 21 to move to the left. The push plate 21 pushes the product at the bottom of the storage chamber out of the discharge port 304. When the push cylinder 5 finishes its leftward movement, the product moves between the two U-shaped slots 23 on the two clamping parts and moves to the marking and positioning area. Tighten the locking nut 18, which drives the screw 10 to move to the left. The two clamping parts move closer to each other, so that the product is clamped between the two U-shaped slots 23. The two stop surfaces 143 are respectively in contact with the front and rear sides of the product, completing the positioning of the product. Then, tighten the anti-loosening nut 19 to tighten the locking nut 18 and lock the screw 10 in this position, so that the two clamping bodies maintain a fixed relative position, thereby keeping the width of the clamping channel fixed. When the product is pushed into the clamping channel later, the positioning is completed directly without the need to tighten the locking nut 18 to adjust the position of the clamping body.

[0053] After the product moves to the marking and positioning area, the push cylinder 5 drives the mounting base 22 to move to the right and reset, which in turn drives the push plate 21 to move to the right and reset. When the push plate 21 moves to the right, it is pushed and swung by the product in the storage cavity until the top is below the product, thus passing over the product to reset. When the push plate 21 moves to the right and is pushed by the top block 606 on the adjusting plate 36, the push plate 21 swings to a vertical position, which is convenient for the next feeding.

[0054] After the initial feeding, the width of the clamping channel is fixed. Therefore, subsequent operations only require controlling the push cylinder 5 to move the push plate 21 to the left, moving the product to the marking and positioning area to achieve automatic product positioning. After product positioning, laser marking is performed. The marked product is then pushed to the left by the subsequent products fed to the left. The product located on the far left of the clamping channel first enters the collection chamber through the inlet and contacts the movable plate 7, pushing the movable plate 7 to the left. When the mounting base 22 moves to the point where the extension rod 31 contacts the push rod 20, the extension rod 31 pushes the push rod 20, causing the push rod 26 to move to the left. The push rod 26 pushes the C-shaped push block 29 to move to the left, and the C-shaped push block 29 pushes the push tooth 33 to move to the left. Under the guidance of the guide groove 331 and the guide post 34, the push tooth 33 moves to the left and also towards the movable plate 7, causing the side 701 of the movable plate 7 to engage with the slot. Inside, the movable plate 7 moves further to the left. The movable plate 7 is pushed by the fed product on one hand and by the pusher rack 33 on the other, so that the total travel of the movable plate 7 is greater than the length of the product in the left and right direction. In this way, the product entering the collection box 4 will not be clamped between the movable plate 7 and the baffle assembly. The product can fall freely during the period when the distance between the movable plate 7 and the baffle assembly increases, ensuring that the product falls smoothly. Since the movable plate 7 has a certain blocking effect on the product, the phenomenon of the product flipping and being unable to be stacked when falling will not occur.

[0055] After the push plate 21 is reset, the movable plate 7 moves to the right under the action of the elastic element 9, pressing the product onto the baffle assembly. After a certain number of products have accumulated in the collection box 4, the push cylinder 16 is activated to drive the push plate 30 to move backward, pushing the accumulated products backward to remove the products.

Claims

1. A laser marking device, comprising: The workbench is equipped with a laser marking head on top; The positioning and clamping module is installed on the worktable, located below the laser marking head; The positioning and clamping module is characterized by comprising two symmetrically arranged clamping bodies that can move closer or further away from each other synchronously, forming a clamping channel between the two clamping bodies, and having a marking positioning area in the clamping channel that is directly opposite the laser marking head. A storage box is installed on one side of the clamping channel. The storage box has a storage cavity for storing stacked products to be marked. The storage box is provided with a discharge port facing and directly opposite the clamping channel. The discharge port is used to allow the product to be marked at the bottom of the storage cavity to pass through. The workbench is also equipped with a pushing mechanism, which includes a push plate that can reciprocate along the extension direction of the clamping channel. The push plate is used to push the product to be marked at the bottom of the storage cavity out of the discharge port and move to the marking positioning area. The two clamping bodies are used to move closer to each other when the product to be marked moves to the marking positioning area, and lock their positions after clamping the first product to be marked so that the width of the clamping channel remains fixed.

2. The laser marking device according to claim 1, characterized in that, The positioning and clamping module also includes a base, a screw, a locking nut, a movable block, and a connecting rod. The base is mounted on the worktable. The screw is parallel to the clamping channel and positioned between the two clamping bodies, and can be elastically slidably mounted on the base along its own axis. The locking nut is screwed onto the screw. The movable block is connected to the screw. Two connecting rods are symmetrically arranged on both sides of the screw. One end of the connecting rod is hinged to the movable block, and the other end is hinged to the clamping body. When the locking nut is screwed on, the screw moves along its own axis, causing the connecting rod to swing. The connecting rod causes the two clamping bodies to move closer to each other synchronously, clamping the product in the marking and positioning area.

3. The laser marking device according to claim 2, characterized in that, A lock nut is also screwed onto the screw, which is used to tighten the lock nut.

4. A laser marking device according to any one of claims 1-3, characterized in that, The clamping body is provided with a U-shaped slot with an opening facing another clamping body. The U-shaped slot is used for the side of the product to be inserted, and the area between the two U-shaped slots forms a clamping channel.

5. The laser marking device according to claim 4, characterized in that, The clamping body includes a support block and a stop block. The support block has a horizontal support surface, and the stop block has a vertical stop surface and a limiting surface that is vertically located on the top of the stop surface. The limiting surface is located above the support surface. A U-shaped slot for the side of the product to be inserted is formed between the limiting surface, the stop surface, and the support surface. The vertical position of the stop block is adjustable so that the width of the U-shaped slot is adjustable.

6. A laser marking device according to claim 2 or 3, characterized in that, The pushing mechanism also includes a pushing cylinder and a mounting base. The mounting base is fixed to the output end of the pushing cylinder. The push plate is rotated around the horizontal axis and mounted on the mounting base. The bottom end of the push plate is connected to an adjusting plate that is inclined toward the clamping channel. A top block is provided on the base on the side of the storage box facing away from the clamping channel. The bottom wall of the storage box is provided with a sliding hole that runs parallel to the clamping channel and passes through vertically. The sliding hole is connected to the discharge port. The pushing cylinder can drive the push plate to slide toward the clamping channel in the sliding hole, so as to move the product to be marked at the bottom of the storage cavity to the marking positioning area. After the push plate is reset, the adjusting plate is pushed by the top block, which causes the baffle to swing to a vertical state.

7. A laser marking device according to any one of claims 1-3, characterized in that, A collection mechanism is provided on the side of the clamping channel facing away from the storage box. The collection mechanism includes a collection box, a baffle assembly, a movable plate, an elastic element, and a pushing assembly. The side of the collection box facing the clamping channel is open. The baffle assembly is located on the side of the collection box facing the clamping channel and has an inlet at the same height as the clamping channel. The movable plate is slidably installed in the collection box along the extension direction of the clamping channel. The elastic element is connected between the movable plate and the collection box and applies an elastic force to the movable plate toward the baffle assembly so that the marked product is clamped between the movable plate and the baffle assembly. The pushing assembly is used to push the movable plate away from the clamping channel when the marked product enters the collection box, so as to facilitate the product falling.

8. The laser marking device according to claim 7, characterized in that, The push assembly includes a push rod and a push tooth. The push rod extends along the extension direction of the clamping channel and is elastically slidably mounted on the positioning clamping module along the extension direction of the clamping channel. The push rod and the push plate block each other in the extension direction of the clamping channel. The push tooth extends along the extension direction of the clamping channel, is located beside the movable plate, and is elastically slidably mounted on the collection box in a direction inclined towards the movable plate away from the clamping channel. Multiple locking teeth are evenly spaced on the side of the push tooth facing the movable plate. The edge of the movable plate corresponding to the push tooth engages with the locking teeth. The push tooth engages with the push rod. When the push plate moves toward the marking positioning area, it drives the push rod to push the push tooth away from the marking positioning area. The push tooth moves toward the movable plate, causing the movable plate to engage between two adjacent locking teeth, thus driving the movable plate to move away from the stop assembly.

9. A laser marking device according to claim 8, characterized in that, The material blocking assembly includes two material blocking columns symmetrically arranged on both sides of the clamping channel. Each material blocking column includes a material blocking plate parallel to the movable plate and a limiting plate perpendicularly connected to the side of the material blocking plate facing away from the other material blocking column. The distance between the two limiting plates is equal to the width of the clamping channel and they are directly opposite the clamping channel.

10. A laser marking device according to claim 9, characterized in that, Two baffle posts are slidably installed on the collection box in a direction perpendicular to the clamping channel. The baffle posts are provided with slot 1 with an opening facing the clamping component, and the clamping component is provided with slot 2 with an opening facing the baffle assembly. A positioning pin is inserted between slot 1 and the corresponding slot 2.

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