A labeling machine for ink tanks

Abstract

The application relates to the technical field of labeling, in particular to an ink tank labeling machine, which comprises a conveying belt, a cylinder arranged at one side of the conveying belt, a mounting plate arranged at the end of the piston rod of the cylinder, two connecting pieces slidingly arranged at the side of the mounting plate away from the cylinder, and an adjusting screw rod rotatingly arranged in the mounting plate, the piston rod of the cylinder faces the conveying belt, the surface of the mounting plate away from the cylinder is provided with sliding grooves at intervals, the connecting pieces are provided with sliding pieces at corresponding positions on the surfaces, the sliding pieces are matched with the sliding grooves and slidingly arranged in the sliding grooves, the adjusting screw rod is rotatingly arranged in the end walls of the sliding grooves at both ends, the circumferential wall of the adjusting screw rod is provided with two sections of threads along the axial direction, the two sections of threads are opposite in rotation direction, the end portions of the two sections of threads are connected, the sliding pieces are sleeved on the circumferential wall of the adjusting screw rod, and the sliding pieces of the two connecting pieces are respectively engaged with the two sections of threads of the circumferential wall of the adjusting screw rod, so that the effect of stably adjusting the clamping position of the cylinder is achieved.

Description

Technical Field

[0001] This application relates to the field of labeling technology, and in particular to a labeling machine for ink cans. Background Technology

[0002] Currently, after completing the ink filling and capping processes, a label needs to be affixed to the ink can.

[0003] Existing automatic labeling machines are typically used to label ink cans. The ink cans are clamped and positioned by two clamping cylinders spaced apart on one side of the conveyor belt, while the drive cylinder on the other side of the conveyor belt rotates the ink cans to apply the labels. The distance between the two clamping cylinders is adjusted and fixed by set screws.

[0004] The existing technical solutions mentioned above have the following drawbacks: During long-term use of the labeling machine, the clamping cylinder rotates continuously, which generates vibration. This vibration can easily loosen the set screw, leading to the failure of the clamping cylinder. Utility Model Content

[0005] This application provides a labeling machine for ink cans to stably adjust the position of the clamping cylinder.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution:

[0007] A labeling machine for ink cans includes a conveyor belt, a cylinder disposed on one side of the conveyor belt, a mounting plate disposed at the end of the piston rod of the cylinder, two connecting parts slidably disposed on the side of the mounting plate opposite to the cylinder, and an adjusting screw rotatably disposed within the mounting plate. The piston rod of the cylinder faces the conveyor belt, and the surface of the mounting plate is perpendicular to and spaced apart from the surface of the conveyor belt. The connecting parts are U-shaped with their U-shaped openings facing away from the mounting plate. The surface of the mounting plate opposite to the cylinder has sliding grooves spaced apart. Sliding parts are disposed at corresponding positions on the surface of the connecting parts, and the sliding parts are adapted to the sliding grooves and slidably disposed within the sliding grooves. The two ends of the adjusting screw are rotatably disposed within the end walls of the sliding grooves. The peripheral wall of the adjusting screw has two sections of thread along its axial direction, with the two sections of thread rotating in opposite directions and their ends connected. The sliding parts are sleeved on the peripheral wall of the adjusting screw, and the sliding parts of the two connecting parts respectively engage with the two sections of thread on the peripheral wall of the adjusting screw.

[0008] By adopting the above technical solution, and by setting up a conveyor belt, cylinder, mounting plate, connector, adjusting screw, sliding groove and sliding component, and the adjusting screw has two sections of threads with opposite directions and connected ends on its peripheral wall, the sliding components of the two connectors respectively engage with the two sections of threads, so that when the adjusting screw rotates, it can drive the two connectors to move closer or further away from each other along the sliding groove, thereby stably adjusting the distance between the two clamping cylinders, adapting to ink cans of different sizes, and achieving stable clamping and positioning.

[0009] Optionally, a fastening hole is provided on the side wall of the mounting plate at one end of the adjusting screw. The fastening hole connects the side wall of the mounting plate and the sliding groove. The fastening hole is coaxially opened with the adjusting screw. A connecting post is provided in the fastening hole. One end of the connecting post is coaxially fixed to the adjusting screw, and the other end of the connecting post protrudes from the side wall of the mounting plate and is located outside the mounting plate. The end of the fastening hole wall away from the adjusting screw is flared, and the flared end faces away from the adjusting screw. The flared hole wall of the fastening hole is spaced apart from the annular groove. A fastening cylinder is sleeved on the periphery of the connecting post. The end of the inner periphery of the fastening cylinder away from the adjusting screw is threadedly connected to the periphery of the connecting post. The end of the outer periphery of the fastening cylinder near the adjusting screw is machined into a conical shape and adapted to the flared hole wall of the fastening hole. Multiple notches are opened at equal angles around the axis on the end face of the fastening cylinder near the adjusting screw.

[0010] By adopting the above technical solution, and by setting a fastening hole, a connecting post, and a fastening cylinder, the end of the fastening hole away from the adjusting screw is flared. The end of the inner circumference of the fastening cylinder away from the adjusting screw is threaded to the connecting post. The end of the outer circumference near the adjusting screw is conical and has multiple notches. After the adjusting screw is adjusted to the correct position, the fastening cylinder can be rotated to move within the fastening hole. The conical end slides against the flared hole wall, and the notches cause the end of the fastening cylinder to contract, thus fixing the connecting post and reducing the probability of the connecting post rotating during the labeling machine's operation.

[0011] Optionally, a strip-shaped rotating plate is fixedly connected to the end face of the connecting column away from the adjusting screw. The surface of the rotating plate is perpendicular to the axis of the adjusting screw and fixedly connected to the end face of the connecting column. An operating column is rotatably mounted on the surface of the rotating plate away from the adjusting screw. The operating column is away from the adjusting screw, and one end of the operating column is rotatably mounted inside the rotating plate.

[0012] By adopting the above technical solution, and by setting a rotating plate and an operating column, the rotating plate is fixedly connected to the end face of the connecting column away from the adjusting screw, and the operating column is rotatably set on the plate surface of the rotating plate away from the adjusting screw. This provides a convenient force-applying component for rotating the adjusting screw, allowing operators to drive the adjusting screw to rotate more easily and improving operational convenience.

[0013] Optionally, the connector consists of two opposing second strip plates and a first strip plate disposed at the same end of the two second strip plates. The surface of the second strip plate is perpendicular to the length direction of the first strip plate, and the length direction of the first strip plate is perpendicular to the direction of movement of the conveyor belt. A clamping cylinder is rotatably disposed between the two second strip plates, and the peripheral wall of the clamping cylinder protrudes from the side wall and end face of the second strip plate.

[0014] By adopting the above technical solution, by setting a first strip plate, a second strip plate and a clamping cylinder, the peripheral wall of the clamping cylinder protrudes from the side wall and end face of the second strip plate, which allows the clamping cylinder to better contact the surface of the ink can, restricts the position of the ink can, and facilitates subsequent labeling with the ink can. At the same time, the clamping cylinder can rotate with the ink can, reducing friction on the surface of the ink can and assisting the ink can to rotate stably to complete the labeling.

[0015] Optionally, a fixed plate is provided on the other side of the conveyor belt opposite to the cylinder. A fixed column is provided at the end of the fixed plate away from the conveyor belt. The axis of the fixed column is perpendicular to the plate surface. A limit plate is provided on the end face of the fixed column away from the fixed plate. The limit plate is provided opposite to the fixed plate. A drive cylinder is rotatably provided between the fixed plate and the limit plate. The drive cylinder is rotatably connected to the opposite plate surfaces of the limit plate and the fixed plate through a connecting shaft.

[0016] By adopting the above technical solution, by setting a fixed plate, a fixed column, a limiting plate and a drive cylinder, the fixed plate and the cylinder are set opposite to each other on the other side of the conveyor belt, the fixed column connects the fixed plate and the limiting plate, and the drive cylinder is rotatably set between the fixed plate and the limiting plate through the connecting shaft. It can cooperate with the clamping cylinder on one side of the conveyor belt to clamp and position the ink can from both sides, providing stable support for the rotation and labeling of the ink can.

[0017] Optionally, a drive motor is provided at the end of the lower plate of the fixed plate near the conveyor belt. The output shaft of the drive motor faces the fixed plate, the output shaft of the drive motor passes through the fixed plate, and the end of the output shaft of the drive motor protrudes from the upper plate of the fixed plate and is coaxially fixed with the drive cylinder.

[0018] By adopting the above technical solution and setting a drive motor, power can be provided to the drive cylinder, which in turn drives the drive cylinder to rotate, thereby driving the clamped ink can to rotate, thus meeting the requirement of ink can rotation during the labeling process.

[0019] Optionally, both the drive cylinder peripheral wall and the clamping cylinder peripheral wall are fitted with a layer of rigid sponge.

[0020] By adopting the above technical solution and by setting a rigid sponge, the pressure of the drive cylinder and clamping cylinder on the surface of the ink tank can be buffered when they come into contact with the ink tank, thereby reducing damage to the surface of the ink tank and protecting its appearance.

[0021] Optionally, an annular groove is coaxially formed at the end of the hole wall near the adjusting screw of the fastening hole, and a ring fitting adapted to the annular groove is provided at the corresponding position on the peripheral wall of the connecting column, and the ring fitting is rotatably disposed in the annular groove.

[0022] By adopting the above technical solution and setting the ring component, the rotation of the connecting column can be guided and limited, making the rotation of the adjusting screw more stable and improving the stability of the adjusting screw rotation.

[0023] In summary, this application has the following technical effects:

[0024] 1. By setting up a belt feeder, cylinder, mounting plate, connector, adjusting screw, sliding groove and sliding component, and the adjusting screw has two sections of threads with opposite directions and connected ends on its peripheral wall, the sliding components of the two connectors respectively engage with the two sections of threads, so that when the adjusting screw rotates, it can drive the two connectors to move closer or further away from each other along the sliding groove, thereby stably adjusting the distance between the two clamping cylinders, adapting to ink cans of different sizes, and achieving stable clamping and positioning;

[0025] 2. By setting a fastening hole, a connecting post, and a fastening cylinder, the end of the fastening hole away from the adjusting screw is flared. The end of the inner circumference of the fastening cylinder away from the adjusting screw is threaded to the connecting post. The end of the outer circumference near the adjusting screw is conical and has multiple notches. After the adjusting screw is adjusted to the correct position, the fastening cylinder can be rotated to move within the fastening hole. The conical end slides against the flared hole wall, and the notches cause the end of the fastening cylinder to contract, thus fixing the connecting post and reducing the probability of the connecting post rotating during the labeling machine's operation.

[0026] 3. By setting up a first strip plate, a second strip plate, and a clamping cylinder, the peripheral wall of the clamping cylinder protrudes from the side wall and end face of the second strip plate, which allows the clamping cylinder to better contact the surface of the ink can, restricts the position of the ink can, and facilitates subsequent labeling with the ink can. At the same time, the clamping cylinder can rotate with the ink can, reducing friction on the surface of the ink can and assisting the ink can to rotate stably to complete the labeling. Attached Figure Description

[0027] Figure 1 This is a structural diagram of the external shape of this application;

[0028] Figure 2 This is a structural diagram of the regulating component of this application.

[0029] Explanation of reference numerals in the attached drawings: 1. Labeling assembly; 11. Conveyor belt; 12. Cylinder; 13. Mounting plate; 131. Sliding groove; 132. Fastening hole; 14. Connecting piece; 141. First strip plate; 142. Second strip plate; 143. Sliding piece; 15. Clamping cylinder; 16. Fixing plate; 161. Fixing column; 162. Limiting plate; 17. Drive cylinder; 2. Adjusting assembly; 21. Sliding column; 22. Adjusting screw; 221. Connecting column; 222. Rotating plate; 223. Operating column; 23. Fastening cylinder; 231. Notch. Detailed Implementation

[0030] The present application will be further described in detail below with reference to the accompanying drawings.

[0031] This application discloses a labeling machine for ink cans, referring to... Figure 1 and Figure 2 The labeling machine includes a labeling component 1 and an adjustment component 2 set on the labeling component 1. The labeling component 1 can automatically perform batch labeling on ink cans. The adjustment component 2 can adjust the distance between the two clamping cylinders 15 that fix the ink cans to accommodate ink cans of different sizes. At the same time, it reduces the possibility that the two clamping cylinders 15 will move away from each other due to vibration when they rotate, and improves the stability of the clamping action of the clamping cylinders 15.

[0032] Combination Figure 1 and Figure 2 The labeling assembly 1 includes a horizontally arranged conveyor belt 11, a cylinder 12 fixed to the conveyor belt 11 frame via a connecting plate on one side of the conveyor belt 11, a mounting plate 13 at the end of the piston rod of the cylinder 12, two connecting parts 14 slidably mounted on the mounting plate 13, a clamping cylinder 15 rotatably mounted within the connecting parts 14, a fixing plate 16 horizontally arranged on the other side of the conveyor belt 11, a drive motor mounted on the lower surface of the fixing plate 16, and a drive cylinder 17 mounted on the upper surface of the fixing plate 16. A loading end and a unloading end are arranged according to the movement direction of the conveyor belt 11. The cylinder 12 is horizontal in its length direction and perpendicular to the length direction of the conveyor belt 11. The piston rod of the cylinder 12 faces the conveyor belt 11, and the piston rod remains spaced apart from the conveyor belt 11 during its axial extension and retraction.

[0033] Combination Figure 1 and Figure 2 Mounting plate 13 is disposed on the end face of piston rod of cylinder 12. The surface of mounting plate 13 is perpendicular to the axis of piston rod of cylinder 12 and perpendicular to the upper surface of conveyor belt 11. Two connecting pieces 14 are disposed on the side of mounting plate 13 away from cylinder 12. Connecting pieces 14 are U-shaped and consist of two opposing second strip plates 142 and a first strip plate 141 disposed on the same side end of the two second strip plates 142. The two second strip plates 142 are respectively located at both ends of the surface of the first strip plate 141. The surface of the second strip plate 142 is perpendicular to the length direction of the first strip plate 141. The opposing surfaces of the two second strip plates 142 are flush with the end faces of the first strip plate 141. The surface of the first strip plate 141 facing away from the second strip plate 142 is in contact with the surface of the mounting plate 13 facing away from the cylinder 12. The length direction of the first strip plate 141 is perpendicular to both the movement direction of the conveyor belt 11 and the length direction of the cylinder 12. The connecting piece 14 is connected to the mounting plate 13 via the sliding piece 143 and the adjusting assembly 2. The second strip plate 142, which is close to the conveyor belt 11, is always spaced apart from the upper surface of the conveyor belt 11.

[0034] Combination Figure 1 and Figure 2The clamping cylinder 15 is rotatably disposed between the two second strip plates 142. The clamping cylinder 15 is a cylinder closed at both ends. The axis of the clamping cylinder 15 is perpendicular to the surface of the second strip plate 142. The clamping cylinder 15 is spaced apart from the first strip plate 141, and the peripheral wall of the clamping cylinder 15 protrudes from the side wall and end face of the second strip plate 142. The two ends of the clamping cylinder 15 are rotatably disposed in the two second strip plates 142 respectively through a coaxial connecting shaft.

[0035] Combination Figure 1 and Figure 2 On the other side of the conveyor belt 11, opposite to the cylinder 12, is a fixing plate 16. The length direction of the fixing plate 16 is perpendicular to the movement direction of the conveyor belt 11. The lower end of the fixing plate 16 is connected to the conveyor belt 11 frame via a connecting plate. The surface of the fixing plate 16 is horizontal, and the upper surface of the fixing plate 16 is flush with the upper surface of the conveyor belt 11. The end face of the fixing plate 16 is spaced apart from the conveyor belt 11. A drive motor is provided at the end of the lower surface of the fixing plate 16 near the conveyor belt 11. The output shaft of the drive motor faces the fixing plate 16, passes through the fixing plate 16, and the end of the drive motor output shaft protrudes from the upper surface of the fixing plate 16. A fixing post 161 is provided at the end of the upper surface of the fixing plate 16 away from the conveyor belt 11. The fixing post 161 is cylindrical, and its axis is perpendicular to the surface of the fixing plate 16. A limit plate 162 is provided at the end face of the fixing post 161 away from the fixing plate 16. The limit plate 162 is opposite to the fixing plate 16. The drive cylinder 17 is rotatably disposed between the fixed plate 16 and the limiting plate 162. The axis of the drive cylinder 17 is parallel to the axis of the fixed column 161. Both ends of the drive cylinder 17 are rotatably connected to the opposite surfaces of the limiting plate 162 and the fixed plate 16 through connecting shafts. The end of the output shaft of the drive motor is coaxially fixed to the end of the drive cylinder 17.

[0036] Combination Figure 1 and Figure 2 The drive cylinder 17 protrudes from the side wall and end face of the limiting plate 162 and can be positioned above the upper surface of the conveyor belt 11. The drive cylinder 17 and the conveyor belt 11 are spaced apart. Both the drive cylinder 17 and the clamping cylinder 15 are fitted with a layer of rigid sponge to reduce damage to the surface of the ink can.

[0037] Combination Figure 1 and Figure 2The mounting plate 13 has two sliding grooves 131 spaced apart from the surface of the cylinder 12. The length direction of the sliding grooves 131 is parallel to the movement direction of the conveyor belt 11. A sliding member 143 is provided at a corresponding position on the surface of the first strip plate 141 opposite to the surface of the second strip plate 142. The sliding member 143 is adapted to the sliding groove 131 and is slidably disposed in the sliding groove 131. The adjusting assembly 2 includes a sliding column 21 disposed in the sliding groove 131, an adjusting screw 22 rotatably disposed in the sliding groove 131 away from the conveyor belt 11, a connecting column 221 disposed at the end of the adjusting screw 22, a rotating plate 222 disposed at the end of the connecting column 221, an operating column 223 disposed at the end of the surface of the rotating plate 222, and a fastening cylinder 23 sleeved on the periphery of the connecting column 221.

[0038] Combination Figure 1 and Figure 2 The two ends of the sliding column 21 are fixedly connected to the two ends of the sliding groove 131, respectively. The sliding column 21 is inserted into the sliding member 143, which is slidably sleeved on the periphery of the sliding column 21. The axis of the adjusting screw 22 is parallel to the axis of the sliding groove 131. The two ends of the adjusting screw 22 are rotatably set in the two end walls of the sliding groove 131. The periphery of the adjusting screw 22 is spaced apart from the groove wall of the sliding groove 131. The periphery of the adjusting screw 22 has two threads along its axis, with opposite directions and their ends connected. The sliding member 143 is sleeved on the periphery of the adjusting screw 22, and the sliding members 143 of the two connecting members 14 respectively engage with the two threads on the periphery of the adjusting screw 22. The rotation of the adjusting screw 22 can drive the two connecting members 14 to move synchronously, moving closer or further apart, thereby adjusting the distance between the two clamping cylinders 15.

[0039] Combination Figure 1 and Figure 2 A fastening hole 132 is provided on the side wall of the mounting plate 13 at one end of the adjusting screw 22. The fastening hole 132 connects the side wall of the mounting plate 13 and the sliding groove 131. The fastening hole 132 is coaxially formed with the adjusting screw 22, and the end of the adjusting screw 22 is rotatably disposed in the fastening hole 132. A connecting post 221 is provided in the fastening hole 132. One end of the connecting post 221 is coaxially fixed to the adjusting screw 22, and the other end of the connecting post 221 protrudes from the side wall of the mounting plate 13 and is located outside the mounting plate 13. An annular groove (not shown in the figure) is coaxially formed on the end of the hole wall of the fastening hole 132 near the adjusting screw 22. A ring fitting adapted to the annular groove is provided at a corresponding position on the periphery of the connecting post 221, and the ring fitting is rotatably disposed in the annular groove.

[0040] Combination Figure 1 and Figure 2A strip-shaped rotating plate 222 is fixedly connected to the end face of the connecting column 221 away from the adjusting screw 22. The surface of the rotating plate 222 is perpendicular to the axis of the adjusting screw 22. One end of the rotating plate 222 is fixedly connected to the end face of the connecting column 221. An operating column 223 is rotatably mounted on the rotating plate 222 away from the adjusting screw 22. The operating column 223 is cylindrical. The surface of the rotating plate 222 is perpendicular to the axis of the operating column 223. The operating column 223 is away from the adjusting screw 22. One end of the operating column 223 is rotatably mounted inside the rotating plate 222. The operating column 223 and the rotating plate 222 can rotate the adjusting screw 22 through the connecting column 221.

[0041] Combination Figure 1 and Figure 2 The end of the fastening hole 132 away from the adjusting screw 22 is flared, and the flare faces away from the adjusting screw 22. The flared end of the fastening hole 132 is spaced apart from the annular groove. The fastening cylinder 23 is cylindrical and is adapted to the connecting column 221 and is sleeved on the circumferential wall of the connecting column 221. The end of the inner circumferential wall of the fastening cylinder 23 away from the adjusting screw 22 is threaded to the circumferential wall of the connecting column 221. The end of the outer circumferential wall of the fastening cylinder 23 near the adjusting screw 22 is machined into a conical shape and adapted to the flared end of the fastening hole 132. The end face of the fastening cylinder 23 near the adjusting screw 22 has multiple notches 231 at equal angles around the axis. The length direction of the notches 231 is parallel to the axis of the fastening cylinder 23, and the end of the fastening cylinder 23 near the adjusting screw 22 can be inserted into the fastening hole 132.

[0042] Combination Figure 1 and Figure 2 The distance between the two clamping cylinders 15 is adjusted by rotating the adjusting screw 22 through the operating column 223 and the rotating plate 222. After adjustment, the fastening cylinder 23 is rotated towards the adjusting screw 22. The flared hole wall of the fastening hole 132 slides against the conical outer peripheral wall end of the fastening cylinder 23. The notch 231 causes the end of the fastening cylinder 23 to rotate and contract, fixing the connecting column 221 and reducing the possibility of the connecting column 221 rotating during the operation of the labeling machine, thereby improving the stability of the clamping cylinder 15.

[0043] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A labeling machine for ink cans, characterized in that: The system includes a conveyor belt (11), a cylinder (12) disposed on one side of the conveyor belt (11), a mounting plate (13) disposed at the end of the piston rod of the cylinder (12), two connecting pieces (14) slidably disposed on the side of the mounting plate (13) away from the cylinder (12), and an adjusting screw (22) rotatably disposed within the mounting plate (13). The piston rod of the cylinder (12) faces the conveyor belt (11), the surface of the mounting plate (13) is perpendicular to and spaced apart from the surface of the conveyor belt (11), and the connecting pieces (14) are U-shaped with their U-shaped openings facing away from the mounting plate (13). The surface of the mounting plate (13) is away from the cylinder (12). A sliding groove (131) is provided at intervals. A sliding element (143) is provided at a corresponding position on the surface of the connecting member (14). The sliding element (143) is adapted to the sliding groove (131) and is slidably disposed in the sliding groove (131). The two ends of the adjusting screw (22) are rotatably disposed in the two end walls of the sliding groove (131). The peripheral wall of the adjusting screw (22) is provided with two sections of thread along its axial direction. The two sections of thread have opposite directions of rotation and the ends of the two sections of thread are connected. The sliding element (143) is sleeved on the peripheral wall of the adjusting screw (22), and the sliding elements (143) of the two connecting members (14) respectively mesh with the two sections of thread on the peripheral wall of the adjusting screw (22).

2. The labeling machine for ink cans according to claim 1, characterized in that: A fastening hole (132) is provided on the side wall of the mounting plate (13) at one end of the adjusting screw (22). The fastening hole (132) connects the side wall of the mounting plate (13) and the sliding groove (131). The fastening hole (132) is coaxially opened with the adjusting screw (22). A connecting post (221) is provided in the fastening hole (132). One end of the connecting post (221) is coaxially fixed to the adjusting screw (22), and the other end of the connecting post (221) protrudes from the side wall of the mounting plate (13) and is located outside the mounting plate (13). The end of the fastening hole (132) away from the adjusting screw (22) is flared. The flared opening faces away from the adjusting screw (22), and the flared hole wall of the fastening hole (132) is spaced apart from the annular groove. The connecting column (221) is fitted with a fastening cylinder (23). The end of the inner peripheral wall of the fastening cylinder (23) away from the adjusting screw (22) is threadedly connected to the peripheral wall of the connecting column (221). The end of the outer peripheral wall of the fastening cylinder (23) near the adjusting screw (22) is processed into a conical shape and is adapted to the flared hole wall of the fastening hole (132). The end face of the fastening cylinder (23) near the adjusting screw (22) is provided with multiple notches (231) at equal angles around the axis.

3. A labeling machine for ink cans according to claim 2, characterized in that: A strip-shaped rotating plate (222) is fixedly connected to the end face of the connecting column (221) away from the adjusting screw (22). The plate surface of the rotating plate (222) is perpendicular to the axis of the adjusting screw (22). The plate surface of the rotating plate (222) is fixedly connected to the end face of the connecting column (221). An operating column (223) is rotatably arranged on the plate surface of the rotating plate (222) away from the adjusting screw (22). The operating column (223) is away from the adjusting screw (22), and one end of the operating column (223) is rotatably arranged inside the rotating plate (222).

4. A labeling machine for ink cans according to claim 1, characterized in that: The connector (14) consists of two opposing second strip plates (142) and a first strip plate (141) located at the same end of the two second strip plates (142). The surface of the second strip plate (142) is perpendicular to the length direction of the first strip plate (141), and the length direction of the first strip plate (141) is perpendicular to the movement direction of the conveyor belt (11). A clamping cylinder (15) is rotatably arranged between the two second strip plates (142), and the peripheral wall of the clamping cylinder (15) protrudes from the side wall and end face of the second strip plate (142).

5. A labeling machine for ink cans according to claim 4, characterized in that: A fixing plate (16) is provided on the other side of the conveyor belt (11) opposite to the cylinder (12). A fixing column (161) is provided at the end of the fixing plate (16) away from the conveyor belt (11). The axis of the fixing column (161) is perpendicular to the plate surface of the fixing plate (16). A limiting plate (162) is provided on the end face of the fixing column (161) away from the fixing plate (16). The limiting plate (162) is provided opposite to the fixing plate (16). A driving cylinder (17) is rotatably provided between the fixing plate (16) and the limiting plate (162). The driving cylinder (17) is rotatably connected to the opposite plate surfaces of the limiting plate (162) and the fixing plate (16) through a connecting shaft.

6. A labeling machine for ink cans according to claim 5, characterized in that: A drive motor is provided at the end of the lower plate surface of the fixed plate (16) near the conveyor belt (11). The output shaft of the drive motor faces the fixed plate (16), the output shaft of the drive motor passes through the fixed plate (16), and the end of the output shaft of the drive motor protrudes from the upper plate surface of the fixed plate (16) and is coaxially fixed to the drive cylinder (17).

7. A labeling machine for ink cans according to claim 6, characterized in that: Both the peripheral walls of the drive cylinder (17) and the clamping cylinder (15) are covered with a layer of hard sponge.

8. A labeling machine for ink cans according to claim 3, characterized in that: The fastening hole (132) has an annular groove coaxially formed at the end of the hole wall near the adjusting screw (22), and a ring fitting adapted to the annular groove is provided at the corresponding position on the peripheral wall of the connecting column (221). The ring fitting is rotatably set in the annular groove.

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