Height adjusting device for printing roller

Abstract

The utility model discloses a printing roller height adjusting device which comprises a conveying frame, a supporting frame is jointly and fixedly installed on the outer walls of the two sides of the conveying frame, two screw rods are rotatably installed in the supporting frame, belt wheels are fixedly installed on the outer walls of the two screw rods, and the two belt wheels are connected through a belt in a transmission mode. And a first motor connected with one of the screw rods is fixedly installed on the upper end face of the supporting frame, moving sleeves are installed on the outer walls of the two screw rods in a threaded mode, connecting shafts are rotatably installed on the inner walls of the two moving sleeves, and connecting sleeves are fixedly installed at the ends of the two connecting shafts. According to the printing roller, the screw rods, the belt wheels, the movable sleeves and other assemblies are arranged, the two screw rods can synchronously rotate under the cooperation of the two belt wheels connected through the belt, the two screw rods can simultaneously drive the two movable sleeves to move under the dragging of the connecting shaft and the printing roller body, and therefore the height of the printing roller body can be conveniently adjusted; therefore, printing work with different requirements is met.

Description

Technical Field

[0001] The utility model relates to the technical field of printing equipment, in particular to a printing roller height adjustment device. Background Art

[0002] The printing roller is one of the accessories of the offset printing press. A printing press is a machine for printing text and images. A modern printing press is generally composed of mechanisms such as plate loading, inking, embossing, and paper feeding (including folding). Its working principle is: first, the text and image to be printed are made into a printing plate and installed on the printing press. Then, ink is applied to the places with text and images on the printing plate manually or by a printing press, and then directly or indirectly transferred to paper or other substrates, thereby replicating a printed product identical to the printing plate.

[0003] At present, when printing rollers are used for printing in the market, ink is mostly applied on the printing rollers and the ink is evenly applied on the raw materials. For raw materials of different thicknesses, the height of the printing roller from the printing table should also be appropriately adjusted. However, in the prior art, most printing rollers are fixedly installed and their heights cannot be easily adjusted, resulting in certain limitations of the printing rollers during use and insufficient practicality. Therefore, it is necessary to design a printing roller height adjustment device to address the above problems. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a printing roller height adjustment device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The transmission mechanism that the present invention relates to a device for adjusting the height of a printing roller comprises a transport frame, and the outer walls of both sides of the transport frame are jointly fixedly mounted with a support frame, and two screw rods are rotatably mounted inside the support frame, and the outer walls of the two screw rods are fixedly mounted with pulleys, and the two pulleys are connected and driven by belts. The upper end surface of the support frame is fixedly mounted with a first motor connected to one of the screw rods, and the outer walls of the two screw rods are threadedly mounted with moving sleeves, and the inner walls of the two moving sleeves are rotatably mounted with connecting shafts, and the ends of the two connecting shafts are fixedly mounted with connecting sleeves, and the inner walls of the two connecting sleeves are slidably mounted with connecting rods through a connecting mechanism, and the ends of the two connecting rods are fixedly connected with connecting sleeves, and a printing roller body is slidably mounted between the two connecting sleeves, and the outer wall of one of the moving sleeves is fixedly mounted with a second motor through a supporting mechanism, and the outer wall of the output shaft of the second motor is connected to the connecting shaft on the same side through a rotating mechanism, and the bottom wall of the support frame is fixedly connected with a connecting frame through a lifting mechanism, and a cleaning roller is rotatably mounted inside the connecting frame.

[0007] Preferably, the connection mechanism comprises a connection spring installed inside the connection sleeve, and two ends of the connection spring are elastically connected to the inner wall of the connection sleeve and the outer wall of the connection rod respectively.

[0008] Preferably, the support mechanism comprises a support plate fixedly mounted on the outer wall of the moving sleeve, and the second motor is fixedly mounted on the outer wall of the support plate.

[0009] Preferably, the rotating mechanism comprises a gear fixedly mounted on the connecting shaft and the outer wall of the second motor output shaft, and the two gears mesh with each other.

[0010] Preferably, the lifting mechanism comprises a cylinder fixedly mounted on the bottom wall of the support frame, and the telescopic end of the cylinder is fixedly connected to the upper end surface of the connecting frame.

[0011] Preferably, the outer walls at both ends of the rotating shaft of the printing roller body are slidably mounted with limit keys through mounting grooves, and the inner walls of the two connecting sleeves are provided with key grooves that cooperate with the limit keys.

[0012] Beneficial effects of the utility model:

[0013] 1. By setting components such as screws, pulleys and movable sleeves, the two screws can rotate synchronously with the cooperation of the two pulleys connected by the belt. The two screws can drive the two movable sleeves to move at the same time through the involvement of the connecting shaft and the printing roller body, so that the height of the printing roller body can be conveniently adjusted to meet the printing work with different needs.

[0014] 2. By setting up components such as a cylinder, a connecting frame and a cleaning roller, the cylinder can drive the connecting frame to descend while the printing roller body rotates, thereby allowing the connecting frame to drive the cleaning roller to contact the outer wall of the printing roller body, thereby conveniently cleaning the outer wall of the printing roller body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a printing roller height adjustment device proposed by the utility model;

[0016] Figure 2 for Figure 1 Schematic diagram of the vertical section structure;

[0017] Figure 3 This is a side structural schematic diagram of a printing roller height adjustment device proposed by the utility model;

[0018] Figure 4 for Figure 1 A schematic diagram of the structure enlargement at point A;

[0019] Figure 5 for Figure 2 Schematic diagram of the enlarged structure at point B in FIG.

[0020] In the figure: 1 transport frame, 2 support frame, 3 screw rod, 4 pulley, 5 first motor, 6 moving sleeve, 7 connecting shaft, 8 connecting sleeve, 9 connecting spring, 10 connecting rod, 11 connecting sleeve, 12 printing roller body, 13 limit key, 14 support plate, 15 second motor, 16 gear, 17 cylinder, 18 connecting frame, 19 cleaning roller. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-5 A printing roller height adjustment device comprises a transport frame 1, a support frame 2 is fixedly installed on the outer walls of both sides of the transport frame 1, two screw rods 3 are rotatably installed inside the support frame 2, the outer walls of the two screw rods 3 are fixedly installed with pulleys 4, the two pulleys 4 are connected and driven by belts, a first motor 5 connected to one of the screw rods 3 is fixedly installed on the upper end surface of the support frame 2, the outer walls of the two screw rods 3 are threadedly installed with moving sleeves 6, the inner walls of the two moving sleeves 6 are rotatably installed with connecting shafts 7, the ends of the two connecting shafts 7 are fixedly installed with connecting sleeves 8, and the two connecting sleeves 7 are fixedly installed with connecting sleeves 8. The inner wall of the connecting sleeve 8 is slidably installed with a connecting rod 10 through a connecting mechanism. The connecting mechanism includes a connecting spring 9 installed inside the connecting sleeve 8. The two ends of the connecting spring 9 are elastically connected to the inner wall of the connecting sleeve 8 and the outer wall of the connecting rod 10 respectively. The ends of the two connecting rods 10 are fixedly connected with connecting sleeves 11. A printing roller body 12 is slidably installed between the two connecting sleeves 11. The outer walls of both ends of the rotating shaft of the printing roller body 12 are slidably installed with limit keys 13 through mounting grooves. The inner walls of the two connecting sleeves 11 are provided with key slots that cooperate with the limit keys 13.

[0023] A second motor 15 is fixedly installed on the outer wall of one of the movable sleeves 6 through a supporting mechanism, the supporting mechanism includes a supporting plate 14 fixedly installed on the outer wall of the movable sleeve 6, the second motor 15 is fixedly installed on the outer wall of the supporting plate 14, the outer wall of the output shaft of the second motor 15 is connected to the connecting shaft 7 on the same side through a rotating mechanism, the rotating mechanism includes a gear 16 fixedly installed on the connecting shaft 7 and the outer wall of the output shaft of the second motor 15, the two gears 16 are engaged with each other, the bottom wall of the support frame 2 is fixedly connected to a connecting frame 18 through a lifting mechanism, the lifting mechanism includes a cylinder 17 fixedly installed on the bottom wall of the support frame 2, the telescopic end of the cylinder 17 is fixedly connected to the upper end surface of the connecting frame 18, and a cleaning roller 19 is rotatably installed inside the connecting frame 18.

[0024] When the utility model is used, the first motor 5 can drive one of the screw rods 3 to rotate, and one of the screw rods 3 drives the other screw rod 3 to rotate synchronously through two pulleys 4 connected by belts. Under the involvement of the connecting shaft 7 and the printing roller 12 body, the two screw rods 3 can simultaneously drive the two movable sleeves 6 to move, thereby the height of the printing roller body 12 can be conveniently adjusted to meet printing work with different needs. When printing, the second motor 15 can drive the connecting shaft 7 to rotate through two gears 16 that mesh with each other, thereby the connecting shaft 7 can drive the printing roller body 12 to rotate through the cooperation of the connecting rod 10 and the connecting sleeve 11 to perform printing work. The rotation axis of the printing roller body 12 and the inside of the connecting sleeve 11 can be limited by the cooperation of the limit key 13 and the key slot to prevent the rotation axis of the printing roller body 12 from rotating inside the connecting sleeve 11;

[0025] When it is necessary to clean the outer wall of the printing roller body 12, while the printing roller body 12 rotates, the cylinder 17 can drive the connecting frame 18 to descend, thereby allowing the connecting frame 18 to drive the cleaning roller 19 to contact the outer wall of the printing roller body 12, thereby allowing the outer wall of the printing roller body 12 to be conveniently cleaned. When it is necessary to disassemble the printing roller body 12, the connecting rod 10 can be squeezed inwardly, thereby allowing the connecting rod 10 to drive the connecting sleeve 11 to detach from the outer wall of the rotating shaft of the printing roller body 12, and then the printing roller body 12 can be conveniently disassembled. When the printing roller body 12 is used, the connecting spring 9 is elastically squeezed to enable the connecting rod 10 to drive the connecting sleeve 11 to always be sleeved on the outer wall of the rotating shaft of the printing roller body 12, thereby preventing the rotating shaft of the printing roller body 12 from detaching from the connecting sleeve 11.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A printing roller height adjustment device, comprising a transport frame (1), characterized in that: The outer walls of both sides of the transport frame (1) are jointly fixedly mounted with a support frame (2), two screw rods (3) are rotatably mounted inside the support frame (2), the outer walls of the two screw rods (3) are fixedly mounted with pulleys (4), the two pulleys (4) are connected and driven by belts, a first motor (5) connected to one of the screw rods (3) is fixedly mounted on the upper end surface of the support frame (2), the outer walls of the two screw rods (3) are threadedly mounted with moving sleeves (6), the inner walls of the two moving sleeves (6) are rotatably mounted with connecting shafts (7), the ends of the two connecting shafts (7) are fixedly mounted with connecting sleeves (8), and the two The inner wall of the connecting sleeve (8) is slidably mounted with a connecting rod (10) via a connecting mechanism, the ends of the two connecting rods (10) are fixedly connected with a connecting sleeve (11), and a printing roller body (12) is slidably mounted between the two connecting sleeves (11). A second motor (15) is fixedly mounted on the outer wall of one of the movable sleeves (6) via a supporting mechanism, and the outer wall of the output shaft of the second motor (15) is connected to the connecting shaft (7) on the same side via a rotating mechanism. The bottom wall of the support frame (2) is fixedly connected with a connecting frame (18) via a lifting mechanism, and a cleaning roller (19) is rotatably mounted inside the connecting frame (18).

2. A printing roller height adjustment device according to claim 1, characterized in that: The connection mechanism comprises a connection spring (9) installed inside the connection sleeve (8), and two ends of the connection spring (9) are elastically connected to the inner wall of the connection sleeve (8) and the outer wall of the connection rod (10) respectively.

3. A printing roller height adjustment device according to claim 2, characterized in that: The support mechanism comprises a support plate (14) fixedly mounted on the outer wall of the moving sleeve (6), and the second motor (15) is fixedly mounted on the outer wall of the support plate (14).

4. A printing roller height adjustment device according to claim 3, characterized in that: The rotating mechanism comprises a gear (16) fixedly mounted on the connecting shaft (7) and the outer wall of the output shaft of the second motor (15), and the two gears (16) mesh with each other.

5. A printing roller height adjustment device according to claim 4, characterized in that: The lifting mechanism comprises a cylinder (17) fixedly mounted on the bottom wall of the support frame (2), and the telescopic end of the cylinder (17) is fixedly connected to the upper end surface of the connection frame (18).

6. A printing roller height adjustment device according to claim 5, characterized in that: The outer walls of both ends of the rotating shaft of the printing roller body (12) are slidably mounted with limit keys (13) through mounting grooves, and the inner walls of the two connecting sleeves (11) are provided with key grooves that match the limit keys (13).

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