Automatic pad printing machine

Abstract

The utility model discloses an automatic pad printing machine which comprises a fixed bottom plate, a lifting shell extending vertically is fixed to the top face of the rear portion of the fixed bottom plate, a vertical lifting mechanism is installed in the lifting shell, an extending block is fixed to the front portion of a lifting block of the vertical lifting mechanism, and a lifting air cylinder is installed on the top face of the extending block. A lifting connecting column is fixed to the bottom end of a push rod of the lifting air cylinder, a lifting plate is fixed to the bottom face of the lifting connecting column, and a cylindrical pad printing block extending front and back is installed in the middle of the bottom face of the lifting plate. The outer wall surface of a cylinder or a cone can be subjected to pad printing, the pad printing effect is good, and the efficiency is high.

Description

Technical field:

[0001] The utility model relates to the technical field related to pad printing equipment, and more specifically to an automatic pad printing machine. Background technology:

[0002] Pad printing machine is a kind of printing equipment, which is suitable for plastics, toys, glass, metal, ceramics, electronics, IC seals, etc. Pad printing is an indirect printing technology with a concave rubber head, and has become a major method for printing and decorating the surfaces of various objects.

[0003] The pad printing machine presses the pad against the ink pattern, presses it on the pad, and then presses the pad against the corresponding board to be processed to print the pattern on the board;

[0004] It is generally suitable for flat printing, but when the outer wall of a cylinder or cone needs to be printed, this type of pad printing equipment using a rubber head cannot meet the requirements. Generally, an inkjet printer is used for printing. However, the printing speed of an inkjet printer is very low, and its cost is high and efficiency is low. Utility model content:

[0005] The utility model aims to overcome the shortcomings of the prior art and provides an automatic pad printing machine which can perform pad printing on the outer wall surface of a cylindrical or conical object and has good pad printing effect and high efficiency.

[0006] The solution of the utility model to solve the technical problem is:

[0007] An automatic pad printing machine comprises a fixed bottom plate, a vertically extending lifting shell is fixed to the top surface of the rear part of the fixed bottom plate, a vertical lifting mechanism is installed in the lifting shell, an extension block is fixed to the front part of the lifting block of the vertical lifting mechanism, a lifting cylinder is installed on the top surface of the extension block, a lifting connecting column is fixed to the bottom end of the push rod of the lifting cylinder, a lifting plate is fixed to the bottom surface of the lifting connecting column, and a cylindrical pad printing block extending forward and backward is installed in the middle of the bottom surface of the lifting plate;

[0008] The left and right parts of the top surface of the lifting plate are fixed with support frames, the winding drum is installed on the left support frame, and the pad printing drum is installed on the right support frame. The ends of the transmission shafts clamped in the middle of the winding drum and the pad printing drum extend out of the corresponding support frames and are fixed with transmission sprockets. A winding motor is fixed on the top surface of the lifting plate on one side of the support frame, and a winding sprocket is fixed on the output shaft of the winding motor. The chain is tensioned on the corresponding winding sprocket and the transmission sprocket.

[0009] A vertical fixed plate is fixed on the top surface of the fixed bottom plate directly below the cylindrical pad printing block, and a material discharge rotating shaft extending forward and backward is movably connected to the upper front wall surface of the vertical fixed plate through a bearing, a limiting plate is fixed in the middle of the material discharge rotating shaft, and the material discharge rotating shaft is directly below the cylindrical pad printing block.

[0010] The support frame is two vertical fixing plates corresponding to each other in the front and rear, the bottoms of the two vertical fixing plates are fixed at the front end or rear end of the left or right part of the top surface of the lifting plate, a vertical placement groove extending downward is formed in the middle part of the top surface of the vertical fixing plate, a transmission shaft clamped in the middle part of the winding drum or the pad printing drum is inserted into the corresponding two vertical placement grooves, the transmission shaft cooperates with the vertical placement groove, the rear end of the transmission shaft extends out of the rear wall surface of the rear vertical fixing plate and is fixed with a transmission sprocket.

[0011] A lower connecting plate is provided below the middle part of the bottom surface of the lifting plate, and vertical adjusting screws are fixed to the front and rear parts of the left and right parts of the top surface of the lower connecting plate, and the top of the vertical adjusting screw extends out of the corresponding through hole in the middle part of the lifting plate, and a buffer spring is inserted in the middle part of the vertical adjusting screw, and the top end of the buffer spring forces the bottom surface of the lifting plate, and the bottom end of the buffer spring forces the top surface of the lower connecting plate, and a locking nut is threaded on the upper part of the vertical adjusting screw, and the bottom surface of the locking nut is pressed against the top surface of the lifting plate.

[0012] A lower shell is fixed to the bottom surface of the lower connecting plate, and a right extended shell portion is provided on the right side of the rear portion of the lower shell, a rotating motor is fixed to the front wall surface of the right extended shell portion, the end of the output shaft of the rotating motor extends into the right extended shell portion and is fixed with a rotating driving wheel, a main rotating shaft extending front and rear is movably connected in the lower shell through a bearing, a rear driving wheel is fixed to the rear of the main rotating shaft, a driving belt is tensioned on the rotating driving wheel and the rear driving wheel, a cylindrical pad printing block is fixed to the front outer side wall of the main rotating shaft, and the bottom of the cylindrical pad printing block extends out of the bottom surface of the lower shell.

[0013] A heating block is fixed on the inner side wall of the lower shell at the top surface of the cylindrical pad printing block. The inner wall of the heating block is an arc-shaped wall, on which a protective layer is fixed. The protective layer is closely attached to the outer side wall of the cylindrical pad printing block.

[0014] A horizontally arranged double-outlet shaft pushing cylinder is fixed on the front wall surface of the vertical fixed plate directly below the discharge rotating shaft, the front ends of the two push rods of the double-outlet shaft pushing cylinder extend out of the front wall surface of the double-outlet shaft pushing cylinder and are fixed to the same pushing plate, a limiting column is fixed on the upper rear wall surface of the pushing plate, an elastic block is fixed on the rear wall surface of the limiting column, and the elastic block is located directly in front of the discharge rotating shaft.

[0015] A vertical guide sleeve is fixed on the top surface of the extension block, a lifting cylinder is fixed in the middle of the top surface of the top plate of the vertical guide sleeve, a lifting connecting column fixed at the bottom end of the push rod of the lifting cylinder is inserted into the vertical guide sleeve, a wear-resistant lubricating layer is fixed on the inner wall of the vertical guide sleeve, the outer wall of the lifting connecting column is tightly attached to the inner wall of the wear-resistant lubricating layer, the cross-section of the lifting connecting column is a rectangular cross-section, which cooperates with the vertical guide sleeve, and the bottom end of the lifting connecting column extends out of the middle through hole of the extension block.

[0016] The outstanding effects of the utility model are:

[0017] It can perform pad printing on the outer wall surface of cylindrical or conical objects, and its pad printing effect is good and the efficiency is high.

[0018] Moreover, it can automatically wind up the tape after pad printing, which is convenient for later processing. Description of the drawings:

[0019] Figure 1 It is a partial structural schematic diagram of the utility model;

[0020] Figure 2 yes Figure 1 A partial enlarged view of

[0021] Figure 3 It is a schematic diagram of the local structure at the lifting plate;

[0022] Figure 4 It is a schematic diagram of the local structure at the cylindrical pad printing block;

[0023] Figure 5 It is a schematic diagram of the local structure at the vertical fixed plate;

[0024] Figure 6 It is a schematic diagram of the local structure at the guide roller. Specific implementation method:

[0025] For example, see Figures 1 to 6 As shown, an automatic pad printing machine comprises a fixed bottom plate 10, a vertically extending lifting shell 20 is fixed to the top surface of the rear portion of the fixed bottom plate, a vertical lifting mechanism 30 is installed in the lifting shell 20, an extension block 311 is fixed to the front of the lifting block 31 of the vertical lifting mechanism 30, a lifting cylinder 32 is installed on the top surface of the extension block 311, a lifting cylinder 32 is fixed to the bottom end of the push rod of the lifting cylinder 32, a lifting plate 34 is fixed to the bottom surface of the lifting plate 33, and a cylindrical pad printing block 40 extending forward and backward is installed in the middle of the bottom surface of the lifting plate 34;

[0026] The vertical lifting mechanism 30 includes a main adjusting screw 35, the bottom of which is movably connected to a horizontal connecting plate fixed on the inner wall of the middle part of the lifting shell 20 through a bearing, the top of which extends out of the top plate of the lifting shell 20 and is fixed with a rotating wheel 36, the main adjusting screw 35 is movably connected to the top plate of the lifting shell 20 through a bearing, the lifting block 31 is screwed on the main adjusting screw 35, and vertical guide rods 37 are provided on the left and right parts of the top surface of the horizontal connecting plate, the bottom of the vertical guide rod 37 is fixed to the horizontal connecting plate, and the upper part of the vertical guide rod 37 is fixed to the top plate of the lifting shell 20, guide blocks are fixed on the side walls of the lifting block 31, and the vertical guide rod 37 is inserted into the middle through hole of the corresponding guide block.

[0027] A vertical guide sleeve 70 is fixed to the top surface of the extension block 311, and a lifting cylinder 32 is fixed to the middle of the top surface of the top plate of the vertical guide sleeve 70. The lifting connecting column 33 fixed to the bottom end of the push rod of the lifting cylinder 32 is inserted into the vertical guide sleeve 70. A wear-resistant lubricating layer 71 is fixed on the inner wall of the vertical guide sleeve 70, and the outer wall of the lifting connecting column 33 is tightly attached to the inner wall of the wear-resistant lubricating layer 71. The cross-section of the lifting connecting column 33 is a rectangular cross-section, which cooperates with the vertical guide sleeve 70, and the bottom end of the lifting connecting column 33 extends out of the bottom end of the middle through hole of the extension block 311.

[0028] Furthermore, support frames 341 are fixed to the left and right parts of the top surface of the lifting plate 34, the winding drum 100 is installed on the left support frame 341, and the pad printing drum 200 is installed on the right support frame 341, and the ends of the transmission shaft 1 clamped in the middle of the winding drum 100 and the pad printing drum 200 extend out of the corresponding support frames 341 and are fixed with a transmission sprocket 2, and a winding motor 343 is fixed to the top surface of the lifting plate 34 on one side of the support frame 341, and a winding sprocket 345 is fixed to the output shaft of the winding motor 343, and a chain 346 is tensioned on the corresponding winding sprocket 345 and the transmission sprocket 2;

[0029] A vertical fixed plate 50 is fixed to the top surface of the fixed base plate 10 directly below the cylindrical pad printing block 40, and a material discharge rotating shaft 51 extending forward and backward is movably connected to the upper front wall surface of the vertical fixed plate 50 through a bearing, and a limiting plate 52 is fixed to the middle outer side wall of the material discharge rotating shaft 51. The material discharge rotating shaft 51 is located directly below the cylindrical pad printing block 40.

[0030] Furthermore, the support frame 341 is two vertical fixing plates corresponding to each other at the front and rear ends, the bottoms of the two vertical fixing plates are fixed at the front end or rear end of the left or right part of the top surface of the lifting plate 34, a vertical placement groove 347 extending downward is formed in the middle of the top surface of the vertical fixing plate, the transmission shaft 1 clamped in the middle of the winding reel 100 or the pad printing reel 200 is inserted into the corresponding two vertical placement grooves 347, the top surface of the vertical fixing plate is fixedly connected with a cover plate by bolts, the cover plate covers the top surface of the corresponding vertical placement groove 347, and the outer wall of the transmission shaft 1 is aligned with the corresponding vertical placement groove The inner wall surface of 347 and the bottom surface of the corresponding cover plate are in close contact, and the transmission shaft 1 is formed with a radially extending annular edge on the outer wall of one of the vertical placement grooves 347, and the radially extending annular edge is inserted into the arc groove formed in the middle of the inner wall of the corresponding vertical placement groove 347 (the middle of the bottom surface of the cover plate here is also formed with an arc groove corresponding to the radially extending annular edge to ensure that the upper part of the radially extending annular edge can be in the arc groove) to achieve position limiting, wherein the vertical placement groove 347 and the corresponding arc groove are coated with lubricating oil to ensure that the transmission shaft 1 is less worn when rotating. The transmission shaft 1 is matched with the vertical placement groove 347, and the rear end of the transmission shaft 1 extends out of the rear wall surface of the rear vertical fixed plate and is fixed with a transmission sprocket 2. Moreover, the winding motor 343 has a slow rotation speed, so that the transmission shaft 1 can run slowly in the vertical placement groove 347. Of course, a self-lubricating layer can also be fixed on the inner wall surface of the vertical placement groove 347 and the bottom surface of the cover plate.

[0031] When removing the take-up reel 100 or the pad printing reel 200, it is only necessary to remove the cover plate and lift it upwards to move the transmission shaft 1 out of the corresponding vertical placement slot 347, then pull the take-up reel 100 or the pad printing reel 200 out of the transmission shaft 1, and then install the new take-up reel 100 or the pad printing reel 200 into the transmission shaft 1, and then place it on to complete the installation, and then fix the cover plate. During removal, the transmission shaft 1 moves, which may cause the chain 346 to disengage from the winding sprocket 345 and the transmission sprocket 2. Therefore, the chain 346 needs to be installed properly during reinstallation.

[0032] Furthermore, vertical rods are fixed on the front and rear side walls of the left and right parts of the lifting plate 34, the two ends of the guide roller 3 extending front and rear are movably connected to the lower parts of the corresponding two vertical rods, and an annular limiter 4 is formed or fixed on the middle outer wall of the guide roller 3, and the guide roller 3 between the two annular limiters 4 is a winding guide part.

[0033] Furthermore, the front and rear side walls of the left and right parts of the lifting plate 34 are movably connected with adjustable vertical rods, and the two ends of the tensioning roller 5 extending forward and backward are movably connected to the lower parts of the corresponding two adjustable vertical rods.

[0034] Furthermore, a lower connecting plate 60 is provided below the middle of the bottom surface of the lifting plate 34, and vertical adjustment screws 61 are fixed to the front and rear of the left and right parts of the top surface of the lower connecting plate 60, and the top of the vertical adjustment screw 61 extends out of the corresponding through hole in the middle of the lifting plate 34, and a buffer spring 62 is inserted in the middle of the vertical adjustment screw 61, and the top of the buffer spring 62 is applied to the bottom surface of the lifting plate 34, and the bottom of the buffer spring 62 is applied to the top surface of the lower connecting plate 60, and a locking nut 63 is screwed to the upper part of the vertical adjustment screw 61, and the bottom surface of the locking nut 63 is pressed against the top surface of the lifting plate 34. The buffer spring 62 can play a buffering effect when the cylindrical pad printing block 40 is pressed down.

[0035] Furthermore, a lower shell 64 is fixed to the bottom surface of the lower connecting plate 60, and a right extended shell portion is provided on the right rear side of the lower shell 64, and a rotating motor 65 is fixed to the front wall surface of the right extended shell portion, and the end of the output shaft of the rotating motor 65 extends into the right extended shell portion and is fixed with a rotating driving wheel 66, and a main rotating shaft 67 extending front and rear is movably connected in the lower shell 64 through a bearing, and a rear transmission wheel 68 is fixed to the rear of the main rotating shaft 67, and a transmission belt 69 is tensioned on the rotating driving wheel 66 and the rear transmission wheel 68 (the rotating driving wheel 66 and the rear transmission wheel 68 can be synchronous wheels, and the transmission belt 69 can be a synchronous belt), and a cylindrical pad printing block 40 is fixed to the front outer side wall of the main rotating shaft 67, and the bottom of the cylindrical pad printing block 40 extends out of the bottom surface of the lower shell 64.

[0036] Furthermore, a plurality of heating blocks 7 are fixed on the inner side wall of the lower shell 64 at the top surface of the cylindrical pad printing block 40. The inner wall surface of the heating block 7 is an arc-shaped wall surface, on which a protective layer is fixed, and the protective layer is closely attached to the outer side wall of the cylindrical pad printing block 40. The heat is transferred to the cylindrical pad printing block 40 through the heating block 7, and the protective layer prevents the heating block 7 from directly contacting the cylindrical pad printing block 40, so that the surface of the cylindrical pad printing block 40 is in contact with too high heat and ages too quickly.

[0037] Furthermore, a horizontally arranged double-outlet shaft pushing cylinder 53 is fixed on the front wall surface of the vertical fixed plate 50 directly below the discharge rotating shaft 51, and the front ends of the two push rods of the double-outlet shaft pushing cylinder 53 extend out of the front wall surface of the double-outlet shaft pushing cylinder 53 and are fixed to the same pushing plate 54, and a limiting column 55 is fixed on the upper rear wall surface of the pushing plate 54, and an elastic block 56 is fixed on the rear wall surface of the limiting column 55, and the elastic block 56 is located directly in front of the discharge rotating shaft 51.

[0038] When this embodiment is in use, the height of the cylindrical pad printing block 40 can be adjusted by manually rotating the rotating wheel 36 to ensure that the cylindrical pad printing block 40 can be in close contact with the outer wall surface of the cylindrical or conical object to be processed during subsequent pad printing.

[0039] When the present embodiment is used, an inner sleeve is clamped on the front outer wall of the material discharging rotating shaft 51, and the cylindrical or conical object to be processed is inserted into the corresponding inner sleeve and tightly attached to the outer wall of the inner sleeve. The rear end face of the cylindrical or conical object is pressed against the limit plate 52 to achieve limit. Then, the push rod of the double-outlet push cylinder 53 is retracted, so that the rear end face of the elastic block 56 is close to the front end face of the cylindrical or conical object to prevent it from falling.

[0040] When the device is just turned on, the heating block 7 is turned on to achieve heating. At the same time, the rotary motor 65 is running to rotate the cylindrical pad printing block 40 to increase its temperature. Generally, pad printing can be performed 5 minutes after it is turned on.

[0041] At the same time, the pad printing tape in the pad printing reel 200 is pulled out and transported along the tensioning roller 5, the guide roller 3, the cylindrical pad printing block 40 on one side, the guide roller 3, and the tensioning roller 5 on the other side, and finally, is wound into the winding reel 100. Subsequently, the output and winding of the pad printing tape are realized through the coordinated operation of the two winding motors 343.

[0042] During pad printing, the push rod of the lifting cylinder 32 pushes the pad printing belt at the top surface of the cylindrical or conical object to be clamped between the bottom surface of the cylindrical pad printing block 40 and the top surface of the cylindrical or conical object. The cylindrical pad printing block 40 transfers heat to the pad printing belt, so that the pattern on its corresponding bottom surface is printed on the top surface of the cylindrical or conical object. The cylindrical or conical object is rotated with the rotation of the cylindrical pad printing block 40 and the pad printing belt, and the corresponding pattern on the pad printing belt is transferred to the surface of the cylindrical or conical object. After completion, the push rod of the lifting cylinder 32 retracts, and the winding motor 343 stops running when the next pattern reaches the bottom of the cylindrical pad printing block 40.

[0043] The push rod of the double-output shaft push cylinder 53 can push the printed cylindrical or conical object to be taken out, and then a new cylindrical or conical object can be installed, and then pad printing can be performed in the previous way, which has good printing effect, high efficiency and low printing cost.

Claims

1. An automatic pad printing machine, comprising a fixed bottom plate (10), characterized in that: A vertically extending lifting shell (20) is fixed to the top surface of the rear portion of the fixed bottom plate, a vertical lifting mechanism (30) is installed in the lifting shell (20), an extension block (311) is fixed to the front of the lifting block (31) of the vertical lifting mechanism (30), a lifting cylinder (32) is installed on the top surface of the extension block (311), a lifting connecting column (33) is fixed to the bottom end of the push rod of the lifting cylinder (32), a lifting plate (34) is fixed to the bottom surface of the lifting connecting column (33), and a cylindrical pad printing block (40) extending forward and backward is installed in the middle of the bottom surface of the lifting plate (34); Support frames (341) are fixed to the left and right parts of the top surface of the lifting plate (34); the winding drum (100) is mounted on the left support frame (341); the pad printing drum (200) is mounted on the right support frame (341); the ends of the transmission shaft (1) clamped in the middle of the winding drum (100) and the pad printing drum (200) extend out of the corresponding support frame (341) and are fixed with a transmission sprocket (2); a winding motor (343) is fixed to the top surface of the lifting plate (34) on one side of the support frame (341); a winding sprocket (345) is fixed to the output shaft of the winding motor (343); and a chain (346) is tensioned on the corresponding winding sprocket (345) and the transmission sprocket (2); A vertical fixed plate (50) is fixed on the top surface of the fixed bottom plate (10) directly below the cylindrical pad printing block (40); a material discharge rotating shaft (51) extending forward and backward is movably connected to the upper front wall surface of the vertical fixed plate (50) via a bearing; a limiting plate (52) is fixed in the middle of the material discharge rotating shaft (51); and the material discharge rotating shaft (51) is located directly below the cylindrical pad printing block (40).

2. The automatic pad printing machine according to claim 1, characterized in that: The support frame (341) is composed of two vertical fixed plates corresponding to each other at the front and rear ends. The bottoms of the two vertical fixed plates are fixed to the front end or rear end of the left or right part of the top surface of the lifting plate (34). A vertical placement groove (347) extending downward is formed in the middle of the top surface of the vertical fixed plate. The transmission shaft (1) clamped in the middle of the winding reel (100) or the pad printing reel (200) is inserted into the corresponding two vertical placement grooves (347). The transmission shaft (1) cooperates with the vertical placement groove (347). The rear end of the transmission shaft (1) extends out of the rear wall surface of the rear vertical fixed plate and is fixed with a transmission sprocket (2).

3. The automatic pad printing machine according to claim 1, characterized in that: Vertical rods are fixed on the front and rear side walls of the left and right parts of the lifting plate (34); the two ends of the material guide roller (3) extending forward and backward are movably connected to the lower parts of the corresponding two vertical rods; an annular limiter (4) is formed or fixed on the outer wall of the middle part of the material guide roller (3); the material guide roller (3) between the two annular limiters (4) is a winding guide part.

4. The automatic pad printing machine according to claim 1, characterized in that: Adjustment vertical rods are movably connected to the front and rear side walls of the left and right parts of the lifting plate (34), and the two ends of the tensioning rollers (5) extending forward and backward are movably connected to the lower parts of the corresponding two adjustment vertical rods.

5. The automatic pad printing machine according to claim 1, characterized in that: A lower connecting plate (60) is provided below the middle of the bottom surface of the lifting plate (34), and vertical adjustment screws (61) are fixed to the front and rear of the left and right parts of the top surface of the lower connecting plate (60), and the top of the vertical adjustment screw (61) extends out of the corresponding through hole in the middle of the lifting plate (34), and a buffer spring (62) is inserted in the middle of the vertical adjustment screw (61), the top of the buffer spring (62) is applied to the bottom surface of the lifting plate (34), and the bottom of the buffer spring (62) is applied to the top surface of the lower connecting plate (60), and a locking nut (63) is screwed to the upper part of the vertical adjustment screw (61), and the bottom surface of the locking nut (63) is pressed against the top surface of the lifting plate (34).

6. The automatic pad printing machine according to claim 5, characterized in that: A lower shell (64) is fixed to the bottom surface of the lower connecting plate (60), and a right extension shell portion is provided on the right rear side of the lower shell (64). A rotating motor (65) is fixed to the front wall surface of the right extension shell portion, and the end of the output shaft of the rotating motor (65) extends into the right extension shell portion and is fixed with a rotating driving wheel (66). A main rotating shaft (67) extending forward and backward is movably connected in the lower shell (64) through a bearing, and a rear driving wheel (68) is fixed to the rear of the main rotating shaft (67). A driving belt (69) is tensioned on the rotating driving wheel (66) and the rear driving wheel (68). A cylindrical pad printing block (40) is fixed to the outer side wall of the front part of the main rotating shaft (67), and the bottom of the cylindrical pad printing block (40) extends out of the bottom surface of the lower shell (64).

7. The automatic pad printing machine according to claim 6, characterized in that: A heating block (7) is fixed on the inner side wall of the lower shell (64) at the top surface of the cylindrical pad printing block (40); the inner wall surface of the heating block (7) is an arc-shaped wall surface, on which a protective layer is fixed, and the protective layer is closely attached to the outer side wall of the cylindrical pad printing block (40).

8. The automatic pad printing machine according to claim 1, characterized in that: A horizontally arranged double-outlet-shaft pushing cylinder (53) is fixed on the front wall surface of the vertical fixed plate (50) directly below the material discharging rotating shaft (51); the front ends of the two push rods of the double-outlet-shaft pushing cylinder (53) extend out of the front wall surface of the double-outlet-shaft pushing cylinder (53) and are fixed to the same pushing plate (54); a limiting column (55) is fixed on the upper rear wall surface of the pushing plate (54); an elastic block (56) is fixed on the rear wall surface of the limiting column (55); and the elastic block (56) is located directly in front of the material discharging rotating shaft (51).

9. The automatic pad printing machine according to claim 1, characterized in that: The vertical lifting mechanism (30) comprises a main adjusting screw (35), the bottom of which is movably connected to a horizontal connecting plate fixed on the inner side wall of the middle part of the lifting shell (20) through a bearing, the top of which extends out of the top plate of the lifting shell (20) and is fixed with a rotating wheel (36), the main adjusting screw (35) is movably connected to the top plate of the lifting shell (20) through a bearing, the lifting block (31) is screwed on the main adjusting screw (35), the left and right parts of the top surface of the horizontal connecting plate are provided with vertical guide rods (37), the bottom of the vertical guide rod (37) is fixed to the horizontal connecting plate, the upper part of the vertical guide rod (37) is fixed to the top plate of the lifting shell (20), the side wall of the lifting block (31) is fixed with a guide block, and the vertical guide rod (37) is inserted into the middle through hole of the corresponding guide block.

10. The automatic pad printing machine according to claim 9, characterized in that: A vertical guide sleeve (70) is fixed on the top surface of the extension block (311), a lifting cylinder (32) is fixed in the middle of the top surface of the top plate of the vertical guide sleeve (70), a lifting connection column (33) fixed at the bottom end of the push rod of the lifting cylinder (32) is inserted into the vertical guide sleeve (70), a wear-resistant lubricating layer (71) is fixed on the inner side wall of the vertical guide sleeve (70), the outer side wall of the lifting connection column (33) is in close contact with the inner side wall of the wear-resistant lubricating layer (71), the cross section of the lifting connection column (33) is a rectangular cross section, which matches the vertical guide sleeve (70), and the bottom end of the lifting connection column (33) extends out of the bottom end of the middle through hole of the extension block (311).

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