License plate stamping device

Abstract

The utility model discloses a license plate stamping device which comprises a control system (9) and a frame (1), a mechanical arm (2) is arranged on the top of the frame (1), and a placing frame (3) and a stamping mechanism (4) are arranged in the frame (1). An upper die frame (5) and a lower die frame (6) are arranged in the stamping mechanism (4), and a translation mechanism is arranged on the stamping mechanism (4) and used for enabling the upper die frame (5) and the lower die frame (6) to move horizontally; the stamping mechanism (4), the translation mechanism and the manipulator (2) are all connected with a control system (9); the mechanical arm (2) comprises a Delta spider hand robot, a suction cup assembly (10) is arranged at the grabbing end of the Delta spider hand robot, the suction cup assembly (10) is connected with a vacuum pump through a first electromagnetic valve (7), and the control end of the first electromagnetic valve (7) is connected with a control system (9). The device has the advantages of being high in working efficiency, capable of reducing the labor intensity of workers and high in machining success rate.

Description

Technical Field

[0001] This utility model belongs to the field of license plate stamping equipment, and in particular relates to a license plate stamping device. Background Technology

[0002] Traditional equipment for producing vehicle license plates includes a press and a mold. The mold consists of an upper mold frame and a lower mold frame. Depending on the license plate number, a set of raised lettering dies is placed on the upper mold frame, and a set of recessed lettering dies is placed on the lower mold frame; alternatively, a set of recessed lettering dies is placed on the upper mold frame, and a set of raised lettering dies is placed on the lower mold frame. The mold is then placed in the press, where pressure forces the raised and recessed lettering dies to interact, stamping the number onto the license plate. Because the lettering dies are placed manually, and because the dies are heavy steel plates, worker efficiency is slow, resulting in low production efficiency for existing equipment. Furthermore, manual die placement is prone to errors, leading to scrapped license plates; in other words, the success rate of existing equipment is low. Utility Model Content

[0003] The purpose of this invention is to provide a license plate stamping device. This invention has the advantages of high work efficiency, reduced labor intensity for workers, and high processing success rate.

[0004] The technical solution of this utility model is: a license plate stamping device, including a control system and a frame, with a robotic arm on the top of the frame and a placement rack and a stamping mechanism inside the frame;

[0005] The stamping mechanism is provided with an upper die holder and a lower die holder, and a translation mechanism is provided on the stamping mechanism. The translation mechanism is used to move the upper die holder and the lower die holder horizontally.

[0006] The stamping mechanism, translation mechanism, and robotic arm are all connected to the control system.

[0007] In the aforementioned license plate stamping device, the robotic arm includes the Delta spider robot. The gripping end of the Delta spider robot is equipped with a suction cup assembly. The suction cup assembly is connected to a vacuum pump through a first solenoid valve. The control end of the first solenoid valve is connected to a control system.

[0008] In the aforementioned license plate stamping device, the stamping mechanism includes a base connecting the frame, a top plate above the base, a support column between the base and the top plate, a first hydraulic cylinder on the base, the first hydraulic cylinder being connected to the control system via a second solenoid valve, a lifting plate at the output end of the first hydraulic cylinder, a first guide column between the lifting plate and the base, and two top blocks on the top surface of the lifting plate.

[0009] In the aforementioned license plate stamping device, the translation mechanism includes a motor connected to the control system. The output end of the motor is provided with a screw located above the lifting plate. A nut is provided on the screw. A slide plate is provided above the nut. A second guide post is provided between the nut and the slide plate. Slide strips are provided at the bottom of both ends of the slide plate. Two third guide posts are provided on the slide strips. The upper end of the third guide post passes through the slide plate and is inserted into the lower mold frame. An extension rod fixed to the base is provided below the slide strip.

[0010] A lower mold frame is provided above the slide plate, and a second hydraulic cylinder with an output end is provided on the slide plate to act on the lower mold frame. The second hydraulic cylinder is connected to the control system through a third solenoid valve.

[0011] The upper mold frame is located above the lower mold frame. A first positioning pin is provided between the upper mold frame and the lower mold frame. Horizontal support arms are provided at both ends of the bottom of the upper mold frame. Positioning holes are provided at both ends of the upper mold frame. A second positioning pin that mates with the positioning holes is provided at the front end of the support arm.

[0012] In the aforementioned license plate stamping device, the oil pipe of the second hydraulic cylinder passes through the inside of the slide plate.

[0013] In the aforementioned license plate stamping device, the top surface of the lower mold frame is provided with a groove that matches the shape of the license plate, and the bottom surface of the groove is provided with a rectangular letter mold groove; the upper mold frame is provided with a rectangular letter mold hole.

[0014] In the aforementioned license plate stamping device, the support arm is fixed to the base, a connecting rod is provided between the two extension rods, and the end of the screw is connected to the middle bearing of the connecting rod.

[0015] In the aforementioned license plate stamping device, the placement frame is provided with a license plate stacking position, multiple letter mold placement positions and a finished product placement position. Multiple positioning rods are provided on the outer periphery of the license plate stacking position, and a third positioning pin is provided on the letter mold placement position.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1) It can automatically stamp license plates, which is highly efficient and reduces the labor intensity of workers.

[0018] 2) Because the letter patterns are automatically arranged under the control system of the robotic arm, the letter patterns are less likely to be misarranged, resulting in a high success rate for license plate processing.

[0019] 3) By optimizing the stamping structure, in addition to providing stamping force for stamping license plates, the upper and lower die frames can extend out of the stamping mechanism and be staggered upwards when viewed from above, which facilitates the loading and unloading of materials by the robotic arm. At the same time, the upper and lower die frames have high stopping accuracy at each stopping point, which further improves the processing success rate of license plates.

[0020] In summary, this utility model has the advantages of high work efficiency, reduced labor intensity for workers, and high processing success rate. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 This is a three-dimensional schematic diagram of the stamping mechanism.

[0023] Figure 3 This is a front view schematic diagram of the stamping mechanism.

[0024] Figure 4 This is a left-side view of the stamping mechanism.

[0025] Figure 5 This is a schematic diagram of the connection between the nut and the slide plate.

[0026] Figure 6 This is a diagram illustrating the connection between the skateboard and the extension bar.

[0027] Figure 7 This is an exploded view of the upper and lower mold frames.

[0028] Figure 8 This is a front view of the shelf.

[0029] Figure 9 This is a connection diagram of the control system.

[0030] The labels in the attached diagram are as follows: 1-Frame, 2-Robot, 3-Placement rack, 4-Pressing mechanism, 5-Upper mold frame, 6-Lower mold frame, 7-First solenoid valve, 9-Control system, 10-Suction cup assembly, 11-Base, 12-Top plate, 13-Support column, 14-First hydraulic cylinder, 15-Second solenoid valve, 16-Lifting plate, 17-First guide column, 18-Top block, 19-Motor, 20-Screw, 21-Nut, 22-Slide plate, 23- - Second guide post, 24- Slide bar, 25- Third guide post, 26- Second hydraulic cylinder, 27- Third solenoid valve, 28- First positioning pin, 29- Second positioning pin, 30- Groove, 31- Letter mold groove, 32- Letter mold hole, 33- Connecting rod, 34- License plate stacking position, 35- Letter mold placement position, 36- Positioning rod, 37- Third positioning pin, 38- Finished product placement position, 39- Oil pipe, 40- Support arm, 41- Extension rod, 42- Positioning hole. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0032] Example. License plate stamping device, such as... Figure 1As shown, it includes a control system 9 and a frame 1. A robot arm 2 is provided on the top of the frame 1. A placement rack 3 and a stamping mechanism 4 are provided inside the frame 1. An upper mold frame 5 and a lower mold frame 6 are provided inside the stamping mechanism 4. A translation mechanism is provided on the stamping mechanism 4 to make the upper mold frame 5 and the lower mold frame 6 move horizontally. The stamping mechanism 4, the translation mechanism and the robot arm 2 are all connected to the control system 9.

[0033] The robotic arm 2 includes the Delta spider-hand robot. The gripping end of the Delta spider-hand robot can move vertically and horizontally in all directions. The gripping end of the Delta spider-hand robot is equipped with a suction cup assembly 10 (an existing accessory). The suction cup assembly 10 is connected to a vacuum pump via a first solenoid valve 7. The control end of the first solenoid valve 7 is connected to a control system 9. The control system 9 is an accessory to the Delta spider-hand robot and can be purchased entirely from the IGUS website. When the control system 9 activates the vacuum pump via the first solenoid valve 7, suction force is generated on the suction cup assembly 10. The structure and usage method of the robotic arm 2 are conventional techniques in this field.

[0034] like Figure 2 As shown, the stamping mechanism 4 includes a base 11 fixed to the frame 1, a top plate 12 above the base 11, four support columns 13 between the base 11 and the top plate 12, a first hydraulic cylinder 14 on the base 11, the first hydraulic cylinder 14 connected to a hydraulic station, the first hydraulic cylinder 14 connected to the control system 9 through a second solenoid valve 15, a lifting plate 16 at the output end of the first hydraulic cylinder 14, two first guide columns 17 between the lifting plate 16 and the base 11, the first guide columns 17 fixed to the base 11, the upper ends of the first guide columns 17 inserted into the lifting plate 16, the two first guide columns 17 respectively located on both sides of the first hydraulic cylinder 14, and two top blocks 18 on the top surface of the lifting plate 16.

[0035] The translation mechanism includes a motor 19 connected to the control system 9. The motor 19 is a stepper motor, which is connected to the control system 9 via a driver. The housing of the motor 19 is fixed to the base 11. The output end of the motor 19 is provided with a screw 20 located above the lifting plate 16. A nut 21 is provided on the screw 20. A sliding plate 22 is provided above the nut 21. Two second guide posts 23 are provided between the nut 21 and the sliding plate 22. The second guide posts 23 are fixed to the nut 21, and the upper ends of the second guide posts 23 are inserted into the sliding plate 22.

[0036] Both ends of the slide plate 22 are equipped with slide bars 24 at their bottom. Two third guide posts 25 are mounted on the slide bars 24. The upper ends of the third guide posts 25 pass through the slide plate 22 and insert into the lower mold frame 6. Below the slide bars 24, there is an extension rod 41 fixed to the base 11. The slide bars 24 are slidably connected to the extension rods 41 via a linear slider guide rail assembly. A connecting rod 33 is provided between the two extension rods 41, and the end of the screw 20 is connected to the middle bearing of the connecting rod 33.

[0037] The lower mold frame 6 is located above the slide plate 22. The slide plate 22 is equipped with a second hydraulic cylinder 26 whose output end acts on the lower mold frame 6. The second hydraulic cylinder 26 is connected to a hydraulic station. When the second hydraulic cylinder 26 extends, the extension end of the second hydraulic cylinder 26 is located above the slide plate 22. The oil pipe 39 of the second hydraulic cylinder 26 passes horizontally through the inside of the slide plate 22. The second hydraulic cylinder 26 is connected to the control system 9 through a third solenoid valve 27.

[0038] The upper mold frame 5 is located above the lower mold frame 6. A first positioning pin 28 is provided between the upper mold frame 5 and the lower mold frame 6. The first positioning pin 28 is fixed to the lower mold frame 6. The upper end of the first positioning pin 28 is inserted into the upper mold frame 5. Horizontal support arms 40 are provided at both ends of the bottom of the upper mold frame 5. Positioning holes 42 are provided at both ends of the upper mold frame 5. A second positioning pin 29 that mates with the positioning hole 42 is provided at the front end of the support arm 40.

[0039] The lower mold frame 6 has a groove 30 on its top surface that matches the shape of the license plate, and a rectangular letter groove 31 on the bottom surface of the groove 30; the upper mold frame 5 has a rectangular letter hole 32.

[0040] The placement rack 3 is equipped with a license plate stacking position 34, multiple character mold placement positions 35, and finished product placement positions 38. Multiple positioning rods 36 are provided around the outer periphery of the license plate stacking position 34. Multiple license plates are stacked on the license plate stacking position 34, and the horizontal position of the license plates is defined by the positioning rods 36. The character mold placement position 35 is equipped with a third positioning pin 37. The upper end of the third positioning pin 37 is inserted into the corresponding character mold, with two third positioning pins 37 corresponding to one character mold, thus defining the horizontal position of the character mold.

[0041] Working principle: In the initial state, the first hydraulic cylinder 14 and the second hydraulic cylinder 26 are in the retracted state. The coordinates of each character pattern on the placement frame and the coordinates of each license plate are preset in the control system 9. The operation process includes the following steps:

[0042] a. Input the license plate number to be stamped into control system 9. Control system 9 will then perform the following actions through its built-in functions:

[0043] b. The control system 9 extends the second hydraulic cylinder 26 through the third solenoid valve 27. The second hydraulic cylinder 26 lifts the lower mold frame 6, and the lower mold frame 6 disengages from the third guide post 25. The second guide post 23 remains inserted into the slide plate 22.

[0044] The control system 9 causes the motor 19 to rotate forward, which drives the screw 20 to rotate. The screw 20 drives the nut 21 to move to one side of the robot arm 2. The nut 21 drives the lower mold frame 6 to move through the second guide post 23 until the positioning hole 42 is located above the corresponding second positioning pin 29. At this time, the spatial coordinates of the upper mold frame 5 are preset in the control system 9.

[0045] The control system 9 causes the second hydraulic cylinder 26 to retract via the third solenoid valve 27, causing the lower mold frame 6 to descend and the upper mold frame 5 to descend synchronously. The upper mold frame 5 lands on the support arm 40, and the second positioning pin 29 is inserted into the positioning hole 42, thus limiting the position of the upper mold frame 5 on the support arm 40. The lower mold frame 6 continues to descend until the first positioning pin 28 separates from the upper mold frame 5, and the upper and lower mold frames separate.

[0046] The control system 9 causes the motor 19 to rotate forward, and the lower mold frame 6 moves a certain distance to one side of the robot arm 2 until the upper mold frame 5 and the lower mold frame 6 are misaligned in the top view. The spatial coordinates of the lower mold frame 6 in this state are preset in the control system 9.

[0047] c. The control system 9 causes the robotic arm 2 to grab the corresponding set of raised character molds (with the raised surface of the mold facing up) and place them on the lower mold frame 6. The set of raised character molds are arranged in the mold slot 31.

[0048] d. The control system 9 causes the robotic arm 2 to grab a license plate onto the lower mold frame 6. The license plate is located in the groove 30 and above a set of raised lettering.

[0049] e. The control system 9 reverses the motor 19 until the lower mold frame 6 moves below the upper mold frame 5. The control system 9 extends the second hydraulic cylinder 26 through the third solenoid valve 27, and the lower mold frame 6 rises until the first positioning pin 28 is reinserted into the upper mold frame 5, the upper and lower mold frames close, and the upper mold frame 5 rises to separate from the second positioning pin 29.

[0050] f. The control system 9 causes the robotic arm 2 to grab the corresponding set of concave character molds (with the concave surface of the mold facing down) and place them on the upper mold frame 5. The set of concave character molds are arranged in the mold hole 32.

[0051] g. Control system 9 reverses motor 19 until upper mold frame 5 and lower mold frame 6 return to their original positions, i.e., below top plate 12. Control system 9 then retracts second hydraulic cylinder 26, causing lower mold frame 6 to fall onto top block 18.

[0052] h. The control system 9 extends the first hydraulic cylinder 14, which in turn raises the lifting plate 16, causing the letter mold on the upper mold frame 5 to contact the top plate 12. The letter mold on the upper mold frame 5 obtains downward pressure from the top plate 12, stamping the license plate and forming a number on the license plate, thus obtaining the finished license plate.

[0053] i. The control system 9 retracts the first hydraulic cylinder 14, causing the lifting plate 16 to descend in height.

[0054] j. The control system 9 extends the second hydraulic cylinder 26 through the third solenoid valve 27. The second hydraulic cylinder 26 lifts the lower mold frame 6, and the lower mold frame 6 disengages from the third guide post 25. The second guide post 23 remains inserted into the slide plate 22.

[0055] The control system 9 causes the motor 19 to rotate forward, which drives the screw 20 to rotate. The screw 20 drives the nut 21 to move to one side of the robot arm 2. The nut 21 drives the lower mold frame 6 to move through the second guide post 23 until the positioning hole 42 is located above the corresponding second positioning pin 29.

[0056] k. The control system 9 enables the robotic arm 2 to grab the character mold on the upper mold frame 5 and return it to its original position.

[0057] l. The control system 9 causes the second hydraulic cylinder 26 to retract, the lower mold frame 6 to descend, and the upper mold frame 5 to descend synchronously. The upper mold frame 5 falls on the support arm 40, and the second positioning pin is inserted into the positioning hole 42, thus limiting the position of the upper mold frame 5. The lower mold frame 6 continues to descend until the first positioning pin 28 separates from the upper mold frame 5.

[0058] The control system 9 causes the motor 19 to rotate forward, and the lower mold frame 6 moves a certain distance to one side of the robot arm 2 until the upper mold frame 5 and the lower mold frame 6 are misaligned in the top view direction, and then the motor 19 stops rotating.

[0059] m. The control system 9 can cause the robotic arm 2 to remove the license plate from the lower mold frame 6 and place it in an empty position on the placement rack.

[0060] n. The control system 9 enables the robotic arm 2 to grab the character mold on the lower mold frame 6 and return it to its original position.

[0061] The process of stamping license plates continues, with steps c through n forming one cycle.

[0062] The above control part belongs to the conventional technical means in this field. Those skilled in the art can make corresponding settings according to the above steps. The main innovation of this utility model is that it uses Delta spider robot to automatically pick up materials and can automatically arrange the letter pattern according to the license plate number, thereby reducing the labor intensity of workers and improving work efficiency. In order to facilitate Delta spider robot to pick up and put down materials, a stamping mechanism is set accordingly. The stamping mechanism has the advantage of precise positioning and can improve the success rate of processing.

Claims

1. A license plate stamping device, characterized in that: It includes a control system (9) and a frame (1), with a robotic arm (2) on the top of the frame (1) and a placement rack (3) and a stamping mechanism (4) inside the frame (1). The stamping mechanism (4) is provided with an upper die frame (5) and a lower die frame (6), and the stamping mechanism (4) is provided with a translation mechanism, which is used to make the upper die frame (5) and the lower die frame (6) move horizontally; The stamping mechanism (4), translation mechanism and robot (2) are all connected to the control system (9).

2. The license plate stamping device according to claim 1, characterized in that: The robotic arm (2) includes the Delta spider robot. The gripping end of the Delta spider robot is equipped with a suction cup assembly (10). The suction cup assembly (10) is connected to a vacuum pump through a first solenoid valve (7). The control end of the first solenoid valve (7) is connected to a control system (9).

3. The license plate stamping device according to claim 1, characterized in that: The stamping mechanism (4) includes a base (11) connecting the frame (1), a top plate (12) above the base (11), a support column (13) between the base (11) and the top plate (12), a first hydraulic cylinder (14) on the base (11), the first hydraulic cylinder (14) being connected to the control system (9) through a second solenoid valve (15), a lifting plate (16) at the output end of the first hydraulic cylinder (14), a first guide column (17) between the lifting plate (16) and the base (11), and two top blocks (18) on the top surface of the lifting plate (16).

4. The license plate stamping device according to claim 3, characterized in that: The translation mechanism includes a motor (19) connected to the control system (9). The output end of the motor (19) is provided with a screw (20) located above the lifting plate (16). A nut (21) is provided on the screw (20). A slide plate (22) is provided above the nut (21). A second guide post (23) is provided between the nut (21) and the slide plate (22). Slide strips (24) are provided at the bottom of both ends of the slide plate (22). A third guide post (25) is provided on the slide strip (24). The upper end of the third guide post (25) passes through the slide plate (22) and is inserted into the lower mold frame (6). An extension rod (41) fixed to the base (11) is provided below the slide strip (24). A lower mold frame (6) is provided above the slide plate (22). A second hydraulic cylinder (26) with an output end acting on the lower mold frame (6) is provided on the slide plate (22). The second hydraulic cylinder (26) is connected to the control system (9) through a third solenoid valve (27). The upper mold frame (5) is located above the lower mold frame (6). A first positioning pin (28) is provided between the upper mold frame (5) and the lower mold frame (6). Horizontal support arms (40) are provided at both ends of the bottom of the upper mold frame (5). Positioning holes (42) are provided at both ends of the upper mold frame (5). A second positioning pin (29) that cooperates with the positioning hole is provided at the front end of the support arm (40).

5. The license plate stamping device according to claim 4, characterized in that: The oil pipe of the second hydraulic cylinder (26) passes through the inside of the slide plate (22).

6. The license plate stamping device according to claim 1, characterized in that: The lower mold frame (6) has a groove (30) on its top surface that matches the shape of the license plate, and a rectangular letter groove (31) on the bottom surface of the groove (30); the upper mold frame (5) has a rectangular letter hole (32).

7. The license plate stamping device according to claim 1, characterized in that: A connecting rod (33) is provided between the two extension rods (41), and the end of the screw (20) is connected to the middle bearing of the connecting rod (33).

8. The license plate stamping device according to claim 1, characterized in that: The placement rack (3) is provided with a license plate stacking position (34), a finished product placement position (38) and multiple character mold placement positions (35). Multiple positioning rods (36) are provided on the outer periphery of the license plate stacking position (34), and a third positioning pin (37) is provided on the character mold placement position (35).

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