Pad printing machine for surface printing of glass products

Abstract

The invention relates to the technical field of glass product surface printing, in particular to a pad printing machine for glass product surface printing, which comprises a bottom frame, a first motor, a first conveying belt and the like, the front side of the right part of the bottom frame is connected with the first motor, and the left part and the right part of the bottom frame are rotatably provided with first rotating shafts; an output shaft of the first motor is connected with the first rotating shaft on the right side, and a first conveying belt is wound between the first rotating shafts. A guide hollow column moves forwards, a first spring is extruded and contracted, at the moment, a trigger column rotates to drive a fixed connecting frame to rotate, the positions of an upper printing head and a lower printing head are switched, and the printing heads printed with ink rotate to a cleaning plate to be cleaned; and then the printing head switched to the lower side transfers the printing ink on the next printing plate to the surface of the glass bottle, and the effects that the printing heads can be automatically cleaned, so that printing of various patterns of the glass bottle can be conveniently completed through the same equipment, the equipment cost is saved, and the printing efficiency is improved are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of glass product surface printing, and in particular to a pad printing machine used for glass product surface printing. Background Art

[0002] Printing on the surface of glass products is a common decoration and identification method, which is widely used in various glass products, such as wine bottles, cosmetic bottles, lamps, windows, etc. In the prior art, when printing on the surface of glass bottles, the glass bottles are conveyed to the printing press by a conveyor belt, so that the printing head on the printing press transfers the ink from the printing plate to the surface of the glass bottle to complete the printing of the glass bottle. However, since a variety of patterns are usually required to be printed on the surface of the glass bottles, it is necessary to arrange multiple printing presses on the production line for printing different patterns, which is costly. In addition, after a certain period of printing, the staff needs to clean the ink on the printing head to ensure the subsequent printing quality, which is inconvenient to operate and affects the printing efficiency of glass bottles.

[0003] Therefore, a pad printer for printing on the surface of glass products has been developed that can automatically clean the printing head so that the same device can print multiple patterns on glass bottles, saving equipment costs and improving printing efficiency. Summary of the invention

[0004] In order to overcome the problem that a variety of patterns usually need to be printed on the surface of glass bottles, it is necessary to arrange multiple printing machines on the production line for printing different patterns, which is costly. In addition, after a certain period of printing, the staff needs to clean the ink on the printing head to ensure the subsequent printing quality, which is inconvenient to operate and affects the printing efficiency of the glass bottles. The present invention provides a pad printing machine for printing on the surface of glass products that can automatically clean the printing head so that the same device can print a variety of patterns on the glass bottles, saving equipment costs and improving printing efficiency.

[0005] The technical solution is: a pad printing machine for printing on the surface of glass products, including a base frame, a first motor, a first conveyor belt, a printing component and a cleaning component. The first motor is connected to the front side of the right part of the base frame, and the left and right parts of the base frame are rotatably provided with a first rotating shaft. The output shaft of the first motor is connected to the first rotating shaft on the right side, and the first conveyor belt is wound around the first rotating shafts. The base frame is provided with a printing component capable of printing on the surface of glass products, and the printing component is provided with a cleaning component capable of automatically cleaning ink.

[0006] As a further preferred solution, the printing assembly includes a connecting bracket, a placement box, a trackless cylinder, a mobile frame, a first cylinder, a fixed frame, a second cylinder, a connecting plate, a fixed connecting frame and a printing head, the connecting bracket is connected to the rear side of the middle of the bottom frame, the placement box is connected to the upper side of the front of the connecting bracket, the trackless cylinder is connected to the upper side of the rear of the connecting bracket, the mobile frame is connected to the slider of the trackless cylinder, the left and right parts of the mobile frame are connected to the first cylinder, the fixed frame is connected between the telescopic ends of the first cylinder, the fixed frame is connected to the second cylinder, the telescopic end of the second cylinder is connected to the connecting plate, and the connecting plate is rotatably connected to the fixed connecting frame. The upper and lower sides of the fixed connecting frame are detachably connected with printing heads through multiple bolts. According to the printing requirements of the glass bottle, the printing plate of the corresponding pattern is placed in the placement box, and then the ink of the corresponding color is evenly applied on the corresponding printing plate. When the glass bottle moves to the connecting bracket, the first conveyor belt stops conveying, and then the trackless cylinder is started to drive the moving frame to move, the first cylinder is started to push the fixed frame to move, and the second cylinder is started to drive the connecting plate and the fixed connecting frame to move, so that the printing head moves to the corresponding printing plate, so that the printing head transfers the ink from the printing plate to the surface of the glass bottle to complete the printing of a pattern.

[0007] As a further preferred solution, a plurality of partitions are provided on the placement box.

[0008] As a further preferred embodiment, the cleaning assembly includes a trigger column, a guide hollow column, a first spring and a cleaning plate. The trigger column is connected to the rear side of the fixed connecting frame, an N-shaped groove is opened on the trigger column, and the guide hollow column is slidably connected to the rear side of the connecting plate. The guide hollow column is extruded and matched with the connecting bracket. The trigger column is slidably connected to the guide hollow column through the N-shaped groove. The left and right parts of the guide hollow column are connected to the connecting plate with a first spring. The front side of the lower part of the second cylinder is connected to the cleaning plate. When it is necessary to print the next pattern, the connecting plate is moved backward until the guide hollow column contacts the connecting bracket, so that the guide hollow column moves forward, and the first spring is squeezed and contracted. At this time, the trigger column rotates, driving the fixed connecting frame to rotate, so that the positions of the upper and lower printing heads are switched, so that the printing head printed with ink rotates to the cleaning plate for cleaning. After the guide hollow column moves away from the connecting bracket, the first spring rebounds, so that the guide hollow column is reset. At this time, the trigger column does not rotate, and then the printing head switched to the lower side transfers the ink on the next printing plate to the surface of the glass bottle.

[0009] As a further preferred scheme, it also includes a loading assembly, which includes a fixed support frame, a two-way screw rod, a sliding frame, a clamping frame and a torsion spring. The upper middle part of the first conveyor belt is detachably connected to the fixed support frame by multiple bolts, and the fixed support frame is rotatably connected to the two-way screw rod. The front and rear parts of the two-way screw rod are both threadedly connected to the sliding frame, and the sliding frames are both slidably connected to the fixed support frame. The left and right parts of the sliding frame are both rotatably connected to the clamping frames, and the clamping frames are connected to the connected sliding frames with torsion springs. The fixed support frame is installed on the first conveyor belt by bolts, and then the two-way screw rod is rotated according to the size of the glass bottle to adjust the distance between the sliding frames. After the adjustment, the glass bottle is placed between the clamping frames, and the clamping frames clamp the glass bottles through the action of the torsion springs.

[0010] As a further preferred solution, a knob is provided on the front side of the bidirectional screw.

[0011] As a further preferred scheme, it also includes a rotating component, which includes a guide connecting plate, a second spring, a second motor and a second roller. The upper middle part of the sliding frame is slidably connected to the guide connecting plate, and a plurality of second springs are connected between the guide connecting plate and the connected sliding frame. The upper part of the guide connecting plate is connected to the second motor, and the second motor output shaft is connected to the second roller. The second roller is rotatably connected to the adjacent guide connecting plates. After the glass bottle is clamped between the clamping frames, the second roller on the guide connecting plate is contacted with the glass bottle by the action of the second spring. When the printing position of the glass bottle needs to be adjusted, the second motor is started to drive the second roller to rotate, so that the glass bottle rotates.

[0012] As a further preferred solution, it also includes a first roller, and the clamping frame is rotatably connected to a plurality of first rollers.

[0013] As a further preferred scheme, it also includes a unloading component, which includes a connecting and fixing bracket, a guiding connecting support bracket and a third spring. The connecting and fixing bracket is connected to the left side of the base frame, and the guiding connecting support bracket is slidably connected to the upper part of the connecting and fixing bracket. A plurality of third springs are connected between the guiding connecting support bracket and the connecting and fixing bracket. After the glass bottles are printed, the glass bottles are conveyed to the connecting and fixing bracket by the first conveyor belt, so that the glass bottles are located between the connecting and fixing bracket and the guiding connecting support bracket. The guiding connecting support bracket is always in contact with the glass bottle through the action force of the third spring, and then the fixed support bracket rotates and moves with the first conveyor belt, so that the glass bottles are separated from the clamping bracket.

[0014] As a further preferred scheme, it also includes a feeding assembly, which includes a third motor, a second conveyor belt and a connecting inclined plate. The third motor is connected to the front side of the right part of the guide connecting support frame. The left and right parts of the guide connecting support frame are rotatably provided with a second rotating shaft. The output shaft of the third motor is connected to the second rotating shaft on the right side, and the second conveyor belt is wrapped around the second rotating shafts. A connecting inclined plate is connected to the left side of the connecting and fixing bracket. After the glass bottle is located between the connecting and fixing bracket and the guide connecting support frame, the second conveyor belt contacts the glass bottle, and then the third motor is started to drive the second rotating shaft to rotate, and the second conveyor belt rotates, so that the glass bottle moves to the connecting inclined plate and moves along the connecting inclined plate to the next processing area.

[0015] The present invention has the following advantages: 1. The present invention enables the guide hollow column to move forward, and the first spring is squeezed and contracted. At this time, the trigger column rotates, driving the fixed connecting frame to rotate, so that the positions of the upper and lower printing heads are switched, so that the printing head printed with ink rotates to the cleaning plate for cleaning, and then the printing head switched to the lower side transfers the ink on the next printing plate to the surface of the glass bottle, thereby achieving the effect of automatically cleaning the printing head, so that the same equipment can complete the printing of multiple patterns on the glass bottle, saving equipment costs and improving printing efficiency.

[0016] 2. The present invention adjusts the distance between the sliding frames by rotating the bidirectional screw according to the size of the glass bottle. After the adjustment, the glass bottle is placed between the clamping frames, and the clamping frames clamp the glass bottle through the force of the torsion spring, thereby achieving the effect of being able to fix the glass bottle and preventing the glass bottle from moving during the printing process.

[0017] 3. After the glass bottle of the present invention is clamped between the clamping frames, the second roller on the guide connecting plate is brought into contact with the glass bottle through the action of the second spring. When the printing position of the glass bottle needs to be adjusted, the second motor is started to drive the second roller to rotate, so that the glass bottle rotates, thereby achieving the effect of automatically adjusting the printing position of the glass bottle, saving manpower, and improving the printing efficiency of the glass bottle.

[0018] 4. After the glass bottles are printed, the present invention conveys the glass bottles to the connecting and fixing brackets through the first conveyor belt, so that the glass bottles are located between the connecting and fixing brackets and the guide connecting and supporting brackets. The guiding connecting and supporting brackets are always in contact with the glass bottles through the action of the third spring. Then, the fixed supporting bracket rotates and moves with the first conveyor belt, so that the glass bottles are separated from the clamping brackets, thereby achieving the effect of automatically removing the glass bottles from the clamping brackets, saving manpower, and improving the efficiency of glass bottle printing.

[0019] 5. According to the present invention, after the glass bottle is located between the connecting fixed bracket and the guide connecting support bracket, the second conveyor belt contacts the glass bottle, and then the third motor is started to drive the second rotating shaft to rotate, and the second conveyor belt rotates, so that the glass bottle moves to the connecting inclined plate, and moves to the next processing area along the connecting inclined plate, thereby achieving the effect of automatically conveying the glass bottle to the next processing area and improving the production efficiency of the glass bottles. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention.

[0022] Figure 3 It is a schematic diagram of a first partial three-dimensional structure of the present invention.

[0023] Figure 4 It is a schematic diagram of a second partial three-dimensional structure of the present invention.

[0024] Figure 5 It is a schematic diagram of a third partial three-dimensional structure of the present invention.

[0025] Figure 6 It is a schematic diagram of a fourth partial three-dimensional structure of the present invention.

[0026] Wherein: 1-base frame, 2-first motor, 3-first conveyor belt, 4-connecting bracket, 5-placing box, 6-trackless cylinder, 7-moving frame, 8-first cylinder, 9-fixed frame, 10-second cylinder, 11-connecting plate, 12-fixed connecting frame, 13-printing head, 14-trigger column, 15-guide hollow column, 16-first spring, 17-cleaning plate, 18-fixed support frame, 19-bidirectional screw rod, 20-sliding frame, 21-clamping frame, 210-first roller, 22-torsion spring, 23-guide connecting plate, 24-second spring, 25-second motor, 26-second roller, 27-connecting fixed bracket, 28-guide connecting support frame, 29-third spring, 30-third motor, 31-second conveyor belt, 32-connecting inclined plate. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] A pad printing machine for printing on the surface of glass products, such as Figure 1-Figure 6As shown, it includes a base frame 1, a first motor 2, a first conveyor belt 3, a printing component and a cleaning component. The first motor 2 is connected to the front side of the right part of the base frame 1. The left and right parts of the base frame 1 are both rotatably provided with a first rotating shaft. The output shaft of the first motor 2 is connected to the first rotating shaft on the right side. The first conveyor belt 3 is wound around the first rotating shafts. The base frame 1 is provided with a printing component, and the printing component is provided with a cleaning component.

[0029] like Figure 1-Figure 3 As shown, the printing assembly includes a connecting bracket 4, a placement box 5, a trackless cylinder 6, a mobile frame 7, a first cylinder 8, a fixed frame 9, a second cylinder 10, a connecting plate 11, a fixed connecting frame 12 and a printing head 13. The connecting bracket 4 is connected to the rear side of the middle part of the base frame 1, and the placement box 5 is connected to the upper front side of the connecting bracket 4. Two partitions are provided on the placement box 5 for easy separation into different areas. The trackless cylinder 6 is connected to the upper rear side of the connecting bracket 4, and the moving frame 7 is connected to the slider of the trackless cylinder 6. The left and right parts of the moving frame 7 are both connected to the first cylinder 8. The fixed frame 9 is connected between the telescopic ends of the first cylinder 8, and the fixed frame 9 is connected to the second cylinder 10. The connecting plate 11 is connected to the telescopic end of the second cylinder 10. The fixed connecting frame 12 is rotatably connected to the connecting plate 11, and the fixed connecting frame 12 is detachably connected to the printing head 13 on both the upper and lower sides by two bolts.

[0030] like Figure 3 As shown, the cleaning assembly includes a trigger column 14, a guide hollow column 15, a first spring 16 and a cleaning plate 17. The trigger column 14 is connected to the rear side of the fixed connecting frame 12, and an N-shaped groove is opened on the trigger column 14. The guide hollow column 15 is slidably connected to the rear side of the connecting plate 11. The guide hollow column 15 is extruded and fitted with the connecting bracket 4. The trigger column 14 is slidably connected to the guide hollow column 15 through the N-shaped groove. The first spring 16 is connected between the left and right parts of the guide hollow column 15 and the connecting plate 11, and the cleaning plate 17 is connected to the front side of the lower part of the second cylinder 10.

[0031] When using the present invention, first place the base frame 1 on the surface printing area of ​​the glass product, then place the glass bottles that need surface printing on the first conveyor belt 3 one by one, then start the first motor 2 to drive the first rotating shaft to rotate, so that the first conveyor belt 3 rotates to convey the glass bottles, and according to the printing requirements of the glass bottles, place the printing plates of the corresponding patterns in the placement box 5, separate the different printing plates by partitions, and then evenly apply the inks of the corresponding colors on the corresponding printing plates. When the glass bottles move to the connecting bracket 4, stop the first conveyor belt 3, and then start the trackless cylinder 6 to drive the moving frame 7 to move, start the first cylinder 8 to push the fixed frame 9 to move, start the second cylinder 10 to drive the connecting plate 11 and the fixed connecting frame 12 to move, so that the printing head 13 moves to the corresponding printing plate, so that the printing head 13 transfers the ink from the printing plate to the surface of the glass bottle to complete the printing of a pattern. When it is necessary to print the next pattern, the connecting plate 11 is moved backward until the guiding hollow column 15 contacts the connecting bracket 4, so that the guiding hollow column 15 moves forward, and the first spring 16 is squeezed and contracted. At this time, the trigger column 14 rotates, driving the fixed connecting frame 12 to rotate, so that the upper and lower printing heads 13 are switched in position, so that the printing head 13 printed with ink rotates to the cleaning plate 17 for cleaning. After the guiding hollow column 15 moves away from the connecting bracket 4, the first spring 16 rebounds, so that the guiding hollow column 15 is reset. At this time, the trigger column 14 does not rotate, and then the printing head 13 switched to the lower side transfers the ink on the next printing plate to the surface of the glass bottle, thereby playing a role in automatically cleaning the printing head 13, so as to realize the same device to complete the printing of multiple patterns on the glass bottle, saving equipment costs and improving printing efficiency.

[0032] like Figure 4 As shown, it also includes a feeding assembly, which includes a fixed support frame 18, a bidirectional screw rod 19, a sliding frame 20, a clamping frame 21 and a torsion spring 22. The upper middle part of the first conveyor belt 3 is detachably connected to the fixed support frame 18 by four bolts, and the fixed support frame 18 is rotatably connected to the bidirectional screw rod 19. The front side of the bidirectional screw rod 19 is provided with a knob for easy grasping and rotation. The front and rear parts of the bidirectional screw rod 19 are both threadedly connected to the sliding frame 20, and the sliding frames 20 are both slidably connected to the fixed support frame 18. The left and right parts of the sliding frame 20 are both rotatably connected to the clamping frame 21, and the clamping frame 21 is connected to the connected sliding frame 20 with a torsion spring 22.

[0033] By using the feeding assembly of the device, the glass bottles can be fixed, and the fixed support frame 18 is installed on the first conveyor belt 3 by bolts. Then, according to the size of the glass bottles, the bidirectional screw rod 19 is rotated to adjust the distance between the sliding frames 20. After the adjustment, the glass bottles are placed between the clamping frames 21. The clamping frames 21 clamp the glass bottles through the force of the torsion springs 22, thereby fixing the glass bottles and preventing them from moving during the printing process.

[0034] like Figure 5 As shown, it also includes a rotating component, which includes a first roller 210, a guide connecting plate 23, a second spring 24, a second motor 25 and a second roller 26. Four first rollers 210 are rotatably connected to the clamping frame 21, and the upper middle side of the sliding frame 20 is slidably connected to the guide connecting plate 23. Two second springs 24 are connected between the guide connecting plate 23 and the connected sliding frame 20. The upper part of the guide connecting plate 23 is connected to the second motor 25, and the second motor 25 output shaft is connected to the second roller 26. The second roller 26 is rotatably connected to the adjacent guide connecting plate 23.

[0035] By using the rotating component of the device, the printing position of the glass bottle can be automatically adjusted. When the clamping frame 21 clamps the glass bottle, the first roller 210 contacts the glass bottle through the force of the torsion spring 22. After the glass bottle is clamped between the clamping frames 21, the second roller 26 on the guide connecting plate 23 contacts the glass bottle through the force of the second spring 24. When the printing position of the glass bottle needs to be adjusted, the second motor 25 is started to drive the second roller 26 to rotate, so that the glass bottle rotates, thereby automatically adjusting the printing position of the glass bottle, saving manpower, and improving the efficiency of glass bottle printing.

[0036] like Figure 6 As shown, a discharge assembly is also included, which includes a connecting and fixing bracket 27, a guiding connecting support bracket 28 and a third spring 29. The connecting and fixing bracket 27 is connected to the left side of the base frame 1, and the guiding connecting support bracket 28 is slidably connected to the upper part of the connecting and fixing bracket 27. Four third springs 29 are connected between the guiding connecting support bracket 28 and the connecting and fixing bracket 27.

[0037] By using the unloading component of the device, the glass bottle can be automatically unloaded from the clamping frame 21. After the glass bottle is printed, the glass bottle is conveyed to the connecting and fixing bracket 27 by the first conveyor belt 3, so that the glass bottle is located between the connecting and fixing bracket 27 and the guiding connecting support frame 28. The guiding connecting support frame 28 is always in contact with the glass bottle through the action of the third spring 29. Then, the fixed support frame 18 rotates and moves with the first conveyor belt 3, so that the glass bottle is separated from the clamping frame 21, thereby achieving the effect of automatically unloading the glass bottle from the clamping frame 21, saving manpower and improving the efficiency of glass bottle printing.

[0038] like Figure 6As shown, it also includes a feeding assembly, which includes a third motor 30, a second conveyor belt 31 and a connecting inclined plate 32. The third motor 30 is connected to the front side of the right part of the guide connecting support frame 28. The left and right parts of the guide connecting support frame 28 are rotatably provided with a second rotating shaft. The output shaft of the third motor 30 is connected to the second rotating shaft on the right side, and the second conveyor belt 31 is wound around the second rotating shafts. The connecting inclined plate 32 is connected to the left side of the connecting fixed bracket 27.

[0039] By using the feeding assembly of the present device, the glass bottles can be automatically transported to the next processing area. After the glass bottles are located between the connecting fixed bracket 27 and the guiding connecting support bracket 28, the second conveyor belt 31 contacts the glass bottles, and then the third motor 30 is started to drive the second rotating shaft to rotate, and the second conveyor belt 31 rotates, so that the glass bottles move to the connecting inclined plate 32, and move to the next processing area along the connecting inclined plate 32, thereby automatically transporting the glass bottles to the next processing area and improving the production efficiency of the glass bottles.

[0040] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A pad printer for printing on the surface of glass products, characterized in that: The invention comprises a base frame (1), a first motor (2), a first conveyor belt (3), a printing component and a cleaning component. The front side of the right part of the base frame (1) is connected to the first motor (2). The left and right parts of the base frame (1) are both rotatably provided with first rotating shafts. The output shaft of the first motor (2) is connected to the first rotating shaft on the right side. The first conveyor belt (3) is wound around the first rotating shafts. The base frame (1) is provided with a printing component capable of printing on the surface of a glass product. The printing component is provided with a cleaning component capable of automatically cleaning ink.

2. A pad printer for printing on the surface of glass products as claimed in claim 1, characterized in that: The printing assembly comprises a connecting bracket (4), a placement box (5), a trackless cylinder (6), a movable frame (7), a first cylinder (8), a fixed frame (9), a second cylinder (10), a connecting plate (11), a fixed connecting frame (12) and a printing head (13). The middle rear side of the bottom frame (1) is connected to the connecting bracket (4), the front upper side of the connecting bracket (4) is connected to the placing box (5), the rear upper side of the connecting bracket (4) is connected to the trackless cylinder (6), the sliding block of the trackless cylinder (6) is connected to the movable frame (7), the left and right sides of the movable frame (7) are both connected to the first cylinder (8), the fixed frame (9) is connected between the telescopic ends of the first cylinder (8), the fixed frame (9) is connected to the second cylinder (10), the telescopic end of the second cylinder (10) is connected to the connecting plate (11), and the connecting plate (11) is connected to the connecting plate (11). ) is rotatably connected to a fixed connecting frame (12), and the upper and lower sides of the fixed connecting frame (12) are detachably connected to a printing head (13) through a plurality of bolts. According to the printing requirements of the glass bottle, a printing plate of a corresponding pattern is placed in a placement box (5), and then ink of a corresponding color is evenly applied to the corresponding printing plate. When the glass bottle moves to the connecting bracket (4), the first conveyor belt (3) stops conveying, and then the trackless cylinder (6) is started to drive the moving frame (7) to move, the first cylinder (8) is started to push the fixed frame (9) to move, and the second cylinder (10) is started to drive the connecting plate (11) and the fixed connecting frame (12) to move, so that the printing head (13) moves to the corresponding printing plate, and the printing head (13) transfers the ink from the printing plate to the surface of the glass bottle to complete the printing of a pattern.

3. A pad printer for printing on the surface of glass products as claimed in claim 2, characterized in that: A plurality of partitions are arranged on the placement box (5).

4. A pad printer for printing on the surface of glass products as claimed in claim 2, characterized in that: The cleaning assembly comprises a trigger column (14), a guide hollow column (15), a first spring (16) and a cleaning plate (17). The trigger column (14) is connected to the rear side of the fixed connection frame (12). An N-shaped groove is formed on the trigger column (14). The guide hollow column (15) is slidably connected to the rear side of the connection plate (11). The guide hollow column (15) is extruded and matched with the connection bracket (4). The trigger column (14) is slidably connected to the guide hollow column (15) through the N-shaped groove. The left and right parts of the guide hollow column (15) are connected to the connection plate (11) with the first spring (16). The front side of the lower part of the second cylinder (10) is connected to the cleaning plate (17). When it is necessary to print the next pattern, the connection plate (11) is moved. 11) moves backward until the guide hollow column (15) contacts the connecting bracket (4), so that the guide hollow column (15) moves forward, and the first spring (16) is squeezed and contracted. At this time, the trigger column (14) rotates, driving the fixed connecting bracket (12) to rotate, so that the upper and lower printing heads (13) are switched in position, so that the printing head (13) printed with ink rotates to the cleaning plate (17) for cleaning. After the guide hollow column (15) moves away from the connecting bracket (4), the first spring (16) rebounds, so that the guide hollow column (15) is reset. At this time, the trigger column (14) does not rotate, and then the printing head (13) switched to the lower side transfers the ink on the next printing plate to the surface of the glass bottle.

5. A pad printer for printing on the surface of glass products as claimed in claim 4, characterized in that: The utility model also comprises a feeding assembly, which comprises a fixed support frame (18), a bidirectional screw rod (19), a sliding frame (20), a clamping frame (21) and a torsion spring (22). The upper middle part of the first conveyor belt (3) is detachably connected to the fixed support frame (18) by a plurality of bolts, the bidirectional screw rod (19) is rotatably connected to the fixed support frame (18), the front and rear parts of the bidirectional screw rod (19) are both threadedly connected to the sliding frame (20), and the sliding frame (20) is slidably connected to the fixed support frame (18). The left and right parts of the sliding frame (20) are both rotatably connected with the clamping frame (21), and the clamping frame (21) is connected to the sliding frame (20) with a torsion spring (22). The fixed support frame (18) is installed on the first conveyor belt (3) by bolts, and then the bidirectional screw rod (19) is rotated according to the size of the glass bottle to adjust the distance between the sliding frames (20). After the adjustment, the glass bottle is placed between the clamping frames (21), and the clamping frames (21) clamp the glass bottle through the action force of the torsion spring (22).

6. A pad printer for printing on the surface of glass products as claimed in claim 5, characterized in that: The front side of the bidirectional screw rod (19) is provided with a knob.

7. A pad printer for printing on the surface of glass products as claimed in claim 5, characterized in that: The invention also comprises a rotating assembly, which comprises a guide connecting plate (23), a second spring (24), a second motor (25) and a second roller (26). The upper middle part of the sliding frame (20) is slidably connected with the guide connecting plate (23). A plurality of second springs (24) are connected between the guide connecting plate (23) and the connected sliding frame (20). The upper part of the guide connecting plate (23) is connected with a second motor (25). The output shaft of the second motor (25) is connected with a second roller (26). The second roller (26) is rotatably connected with the adjacent guide connecting plate (23). After the glass bottle is clamped between the clamping frames (21), the second roller (26) on the guide connecting plate (23) contacts the glass bottle through the action force of the second spring (24). When the printing position of the glass bottle needs to be adjusted, the second motor (25) is started to drive the second roller (26) to rotate, so that the glass bottle rotates.

8. A pad printer for printing on the surface of glass products as claimed in claim 7, characterized in that: It also includes a first roller (210), and the clamping frame (21) is rotatably connected to a plurality of first rollers (210).

9. A pad printer for printing on the surface of glass products as claimed in claim 7, characterized in that: The invention also comprises a discharge assembly, which comprises a connecting and fixing bracket (27), a guiding connecting and supporting bracket (28) and a third spring (29). The left side of the bottom frame (1) is connected with the connecting and fixing bracket (27), the upper part of the connecting and fixing bracket (27) is slidably connected with the guiding connecting and supporting bracket (28), and a plurality of third springs (29) are connected between the guiding connecting and supporting bracket (28) and the connecting and fixing bracket (27). After the glass bottle is printed, the glass bottle is conveyed to the connecting and fixing bracket (27) by the first conveyor belt (3), so that the glass bottle is located between the connecting and fixing bracket (27) and the guiding connecting and supporting bracket (28). The guiding connecting and supporting bracket (28) is always in contact with the glass bottle by the action force of the third spring (29), and then the fixed supporting bracket (18) rotates and moves along with the first conveyor belt (3), so that the glass bottle is separated from the clamping frame (21).

10. A pad printer for printing on the surface of glass products as claimed in claim 9, characterized in that: The invention also comprises a feeding assembly, which comprises a third motor (30), a second conveyor belt (31) and a connecting inclined plate (32). The front side of the right part of the guide connecting support frame (28) is connected to the third motor (30). The left and right parts of the guide connecting support frame (28) are both rotatably provided with a second rotating shaft. The output shaft of the third motor (30) is connected to the second rotating shaft on the right side. The second conveyor belt (31) is wound around the second rotating shaft. The left side of the connecting fixed support frame (27) is connected to the connecting inclined plate (32). After the glass bottle is located between the connecting fixed support frame (27) and the guide connecting support frame (28), the second conveyor belt (31) contacts the glass bottle. Then, the third motor (30) is started to drive the second rotating shaft to rotate, and the second conveyor belt (31) rotates, so that the glass bottle moves to the connecting inclined plate (32) and moves to the next processing area along the connecting inclined plate (32).

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