Device for preventing bearing from falling off of printing machine rubber roller

Abstract

This utility model relates to the field of printing press roller technology and discloses a device for preventing bearing detachment from printing press rollers. It includes a main shaft, with a rubber sleeve, a bearing body, and a chuck fixedly fitted onto the outer wall of the main shaft. An arc-shaped mounting block is provided on the outer wall of the main shaft, and a groove is formed on the inner wall of the arc-shaped mounting block. A circular groove is formed on the inner wall of the chuck. A connecting component and a lubrication component are respectively provided in the inner cavity of the chuck. The lubrication component includes an oil reservoir, and a guide groove is formed on the inner wall of the chuck. Through the design of the lubrication component, the sphere and spring inject lubricant into the inner cavity of the oil guide tube, allowing the oil-immersed rod to contact and coat the bearing during operation. This ensures that the bearing body rotates in close contact with the inner and outer rings of the bearing body, continuously applying lubricant during operation. This reduces the coefficient of friction between the bearing body and the main shaft, reduces wear, and extends the service life of the bearing body.

Description

Technical Field

[0001] This utility model relates to the field of printing press rubber roller technology, specifically a device for preventing bearings from falling off printing press rubber rollers. Background Technology

[0002] In the industrialization process of the printing industry, the printing press roller is a key component for transferring ink and imprinting images, and its operational stability directly affects the quality of printed products and production efficiency.

[0003] Existing printing press rubber roller bearings require manual lubrication periodically, which is prone to leakage. Under long-term high-speed operation, these bearings are susceptible to lubrication failure and accelerated wear, which can lead to bearing loosening and detachment, causing production failures such as misregistration and uneven ink color. Therefore, we have introduced a device to prevent printing press rubber roller bearings from falling off. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a device for preventing bearings from falling off printing press rollers, which has the advantages of automatic bearing lubrication and anti-fall-off, thus solving the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a printing press rubber roller anti-bearing detachment device, including a main shaft, a rubber sleeve, a bearing body and a chuck are fixedly sleeved on the outer wall of the main shaft, an arc-shaped mounting block is provided on the outer wall of the main shaft, a slot is opened on the inner wall of the arc-shaped mounting block, a circular groove is opened on the inner wall of the chuck, and a connecting component and a lubrication component are respectively provided in the inner cavity of the chuck;

[0006] The lubrication assembly includes an oil reservoir, a guide groove 2 is provided on the inner wall of the chuck, a baffle plate is slidably connected to the inner cavity of the guide groove 2, an oil-immersed rod is provided on the inner wall of the baffle plate, and an oil guide pipe is fixedly assembled on the inner wall of the chuck, with a ball and a spring 2 respectively provided in the inner cavity of the oil guide pipe.

[0007] As a preferred technical solution of this utility model: the connecting component includes a guide groove, the inner wall of the chuck is provided with a square groove, the inner cavity of the guide groove is provided with a trapezoidal insert and a connecting rod, the outer wall of the connecting rod is provided with a spring, the outer wall of the trapezoidal insert is fixedly connected to one end of a steel wire rope, the other end of the steel wire rope is fixedly connected to a pull button, and the inner wall of the square groove is rotatably connected to a turntable.

[0008] As a preferred technical solution of this utility model: the trapezoidal insert, connecting rod, wire rope, turntable and spring are regarded as a movable component, and there are two such movable components, which are symmetrically arranged with the arc-shaped mounting block as the center. The outer walls of the two trapezoidal inserts are slidably fitted to the outer walls of the arc-shaped mounting block. The outer wall of the connecting rod has the same shape as the inner wall of the slot, and the outer wall of the connecting rod is adapted to the inner wall of the slot.

[0009] As a preferred technical solution of this utility model: the chuck has the same diameter as the bearing body, and its inner wall is slidably fitted to the outer wall of the arc-shaped mounting block.

[0010] As a preferred technical solution of this utility model: the guide groove, the baffle plate and the oil-immersed rod are regarded as a set of movable components, and the number of such movable components is two, respectively arranged with the circular groove as the center and corresponding to the inner ring and outer ring of the bearing body.

[0011] As a preferred technical solution of this utility model: the outer wall of the sphere is in contact with the inner wall of the oil guide tube, and its diameter is larger than the diameter of the opening of the oil guide tube. The second spring is located at the bottom of the sphere, with one end overlapping the outer wall of the sphere and the other end overlapping the bottom cross section of the oil guide tube.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This printing press roller anti-bearing detachment device, through the design of the lubrication components, enables the ball and spring to inject lubricant into the inner cavity of the oil guide tube, so that the oil-immersed rod contacts and coats the bearing during operation, making it fit and rotate with the inner and outer rings of the bearing body. In this way, the bearing body will be continuously coated with lubricant during operation, thereby reducing the friction coefficient between the bearing body and the spindle, reducing wear, and extending the service life of the bearing body.

[0014] 2. This printing press roller anti-bearing detachment device uses a chuck with the same diameter as the bearing body to form a physical limit, realizing radial displacement of the bearing body. At the same time, the trapezoidal insert in the connecting assembly cooperates with the slot, and the spring automatically clamps it to ensure a stable connection between the chuck and the arc-shaped mounting block, thereby reducing the risk of the bearing body detaching. Pulling the button can quickly stop the trapezoidal insert from being fixed by the wire rope and turntable, thereby reducing labor costs and maintenance complexity, and improving production efficiency. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a schematic cross-sectional view of the present invention.

[0017] Figure 3 This is a schematic diagram of the rubber roller shaft structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the anti-fall-off guide groove structure of this utility model;

[0019] Figure 5 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0020] Figure 6 This utility model Figure 1 Enlarged structural diagram at point B.

[0021] In the diagram: 1. Spindle; 2. Rubber sleeve; 3. Bearing body; 4. Arc-shaped mounting block; 5. Slot; 6. Chuck; 7. Circular groove; 8. Connecting assembly; 9. Lubrication assembly;

[0022] 801. Guide groove one; 802. Square groove; 803. Trapezoidal insert; 804. Connecting rod; 805. Steel wire rope; 806. Turntable; 807. Pull button; 808. Spring one;

[0023] 901. Oil reservoir; 902. Guide groove II; 903. Sphere; 904. Baffle plate; 905. Oil-immersed rod; 906. Oil guide pipe; 907. Spring II. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1 - Figure 6 A printing press roller anti-bearing detachment device includes a main shaft 1. A rubber sleeve 2, a bearing body 3 and a chuck 6 are fixedly sleeved on the outer wall of the main shaft 1. An arc-shaped mounting block 4 is provided on the outer wall of the main shaft 1. A slot 5 is opened on the inner wall of the arc-shaped mounting block 4. A circular groove 7 is opened on the inner wall of the chuck 6. A connecting component 8 and a lubrication component 9 are provided in the inner cavity of the chuck 6.

[0026] The lubrication assembly 9 includes an oil reservoir 901, a guide groove 902 is provided on the inner wall of the chuck 6, a baffle plate 904 is slidably connected to the inner cavity of the guide groove 902, an oil-immersed rod 905 is provided on the inner wall of the baffle plate 904, and an oil guide tube 906 is fixedly assembled on the inner wall of the chuck 6. The inner cavity of the oil guide tube 906 is provided with a ball 903 and a spring 907 respectively.

[0027] In the above structure, by setting the lubrication component 9 and the chuck 6, the bearing body 3 is installed along the outer edge of the main shaft 1, and the chuck 6 is installed at the corresponding position on the outer wall of the bearing body 3. The bearing body 3 rotates under the drive of the main shaft 1, and the chuck 6 automatically applies lubricant to the mounting point between the bearing body 3 and the main shaft 1 through the lubrication component 9. This reduces the friction coefficient between the bearing body 3 and the main shaft 1, preventing the bearing body 3 from derailing during use, and thus extending the service life of the bearing body 3.

[0028] In a preferred embodiment: the connecting assembly 8 includes a guide groove 801, the inner wall of the chuck 6 is provided with a square groove 802, the inner cavity of the guide groove 801 is provided with a trapezoidal insert 803 and a connecting rod 804, the outer wall of the connecting rod 804 is provided with a spring 808, one end of a steel wire rope 805 is fixedly connected to the outer wall of the trapezoidal insert 803, the other end of the steel wire rope 805 is fixedly connected to a pull button 807, and a turntable 806 is rotatably connected to the inner wall of the square groove 802.

[0029] In a preferred embodiment: the trapezoidal insert 803, connecting rod 804, wire rope 805, turntable 806 and spring 808 are regarded as a movable component, and there are two such movable components, which are symmetrically arranged with the arc-shaped mounting block 4 as the center. The outer walls of the two trapezoidal inserts 803 are slidably fitted to the outer wall of the arc-shaped mounting block 4. The outer wall of the connecting rod 804 has the same shape as the inner wall of the slot 5, and the outer wall of the connecting rod 804 is adapted to the inner wall of the slot 5.

[0030] In the above structure, the trapezoidal inserts 803, connecting rods 804, wire ropes 805, turntables 806, and springs 808 are arranged such that the outer walls of the two trapezoidal inserts 803 slide against the outer wall of the arc-shaped mounting block 4 as the chuck 6 moves. This causes the sliding trapezoidal inserts 803 to compress the two springs 808 along the inner wall of the guide groove 801. As the two trapezoidal inserts 803 continue to slide to the inner wall of the slot 5, they spring back under the compression of the springs 808, causing them to engage with the corresponding position on the inner wall of the slot 5. Then, the chuck 6 is fixed to the outer wall of the arc-shaped mounting block 4. When the chuck 6 needs to be removed, the pull button 807 is pulled, causing the pull button 807 to pull one end of the two steel wire ropes 805 outward. At the same time, the steel wire ropes 805 in the inner cavity of the square groove 802 will adhere to the outer wall of the turntable 806, and the other end of the steel wire ropes 805 will pull the two trapezoidal inserts 803 to slide along the inner wall of the guide groove 801, so that the trapezoidal inserts 803 will disengage from the inner wall of the chuck groove 5. Then, the chuck 6 can be removed from the outer wall of the arc-shaped mounting block 4, thus completing the installation and disassembly of the chuck 6 and the arc-shaped mounting block 4.

[0031] In a preferred embodiment: the chuck 6 has the same diameter as the bearing body 3, and its inner wall is slidably fitted against the outer wall of the arc-shaped mounting block 4;

[0032] In the above structure, by setting the chuck 6, the chuck 6 is slidably installed along the inner wall of the arc-shaped mounting block 4, so that the chuck 6 will be installed in the position corresponding to the bearing body 3. The chuck 6, which has the same diameter as the bearing body 3, will fix the bearing body 3, thereby preventing the bearing body 3 from derailing during use.

[0033] In a preferred embodiment: the guide groove 902, the baffle plate 904 and the oil-immersed rod 905 are regarded as a set of movable components, and the number of such movable components is two, respectively arranged with the circular groove 7 as the center and corresponding to the inner ring and outer ring of the bearing body 3.

[0034] In the above structure, by setting the guide groove 902, the baffle plate 904 and the oil-immersed rod 905, when the chuck 6 rotates synchronously with its bearing body 3, the baffle plate 904 and the oil-immersed rod 905 corresponding to the inner and outer rings of the bearing body 3 will rotate synchronously, so that the two oil-immersed rods 905 will come into contact with its inner and outer rings, thereby achieving the application of lubricating oil to its inner and outer rings. The lubricant in its inner ring will flow naturally to the outer edge of its main shaft 1, so that the friction coefficient will be reduced when the main shaft 1 contacts the inner ring of the bearing body 3.

[0035] In a preferred embodiment: the outer wall of the sphere 903 is in contact with the inner wall of the oil guide tube 906, and its diameter is larger than the diameter of the opening of the oil guide tube 906. The second spring 907 is located at the bottom of the sphere 903, with one end overlapping the outer wall of the sphere 903 and the other end overlapping the bottom cross section of the oil guide tube 906.

[0036] In the above structure, the arrangement of the ball 903, the oil guide tube 906, and the second spring 907 allows the chuck 6 to be installed. After installation, the ball 903 is pushed by the external oil injection needle, causing the second spring 907 to be compressed. This allows the oil injection needle to inject its lubricant into the inner cavity of the oil reservoir 901 through the oil guide tube 906. After the lubricant injection is completed, the ball 903 is reset and fixed to the bottom opening of the oil guide tube 906 by the rebound of the second spring 907, thereby sealing the lubricant in the inner cavity of the oil reservoir 901.

[0037] Working principle: First, the bearing body 3 is installed along the outer edge of the main shaft 1 to the designated position. Then, the chuck 6 is slid along the main shaft 1 to the corresponding position of the bearing body 3. At this time, the two trapezoidal blocks 803 in the connecting assembly 8 slide against the outer wall of the arc-shaped mounting block 4 under the movement of the chuck 6. The sliding trapezoidal blocks 803 will drive the two springs 808 to compress along the inner wall of the guide groove 801. When the two trapezoidal blocks 803 continue to slide to the inner wall of the slot 5, the two trapezoidal blocks 803 will rebound and reset under the compression of the springs 808. The two trapezoidal blocks 803 will fit into the corresponding position of the inner wall of the slot 5, thereby fixing the chuck 6 to the outer wall of the arc-shaped mounting block 4. At this time, the chuck 6 corresponds to the bearing body 3, so that the chuck 6 plays a fixing auxiliary role for the bearing body 3.

[0038] Then, lubricant is injected through the oil guide pipe 906 installed on the inner wall of the chuck 6 using an external oil injection needle. This causes the oil injection needle to push the ball 903, which in turn compresses the spring 907, allowing the lubricant to enter the inner cavity of the oil reservoir 901. The lubricant in the inner cavity of the oil reservoir 901 will soak the oil-immersing rods 905 corresponding to the outer and inner rings of the bearing body 3. When the bearing body 3 rotates, the oil-immersing rods 905 will coat the outer and inner rings of the rotating bearing body 3 with lubricant, reducing friction. At the same time, the lubricant in the inner ring will naturally flow to the outer edge of the spindle 1, further reducing the coefficient of friction between the spindle 1 and the bearing body 3, thereby preventing the bearing body 3 from detaching from the spindle 1 due to wear.

[0039] Simultaneously, when it is necessary to disassemble the chuck 6, by pulling the button 807, the button 807 will pull one end of the two steel wire ropes 805 outward. At the same time, the steel wire ropes 805 in the inner cavity of the square groove 802 will adhere to the outer wall of the turntable 806, so that the other end of the steel wire ropes 805 will pull the two trapezoidal blocks 803 to slide along the inner wall of the guide groove 801, so that the trapezoidal blocks 803 will disengage from the inner wall of the slot 5, and then the chuck 6 can be removed from the outer wall of its arc-shaped mounting block 4, thus completing the disassembly of the installation connection between the chuck 6 and the arc-shaped mounting block 4.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for preventing bearing detachment from printing press rollers, comprising a main shaft (1), characterized in that: The outer wall of the main shaft (1) is respectively fixedly fitted with a rubber sleeve (2), a bearing body (3) and a chuck (6). The outer wall of the main shaft (1) is provided with an arc-shaped mounting block (4). The inner wall of the arc-shaped mounting block (4) is provided with a slot (5). The inner wall of the chuck (6) is provided with a circular groove (7). The inner cavity of the chuck (6) is respectively provided with a connecting component (8) and a lubrication component (9). The lubrication assembly (9) includes an oil reservoir (901), and the inner wall of the chuck (6) is provided with a guide groove (902). A baffle plate (904) is slidably connected to the inner cavity of the guide groove (902). An oil-immersed rod (905) is provided on the inner wall of the baffle plate (904). An oil guide pipe (906) is fixedly assembled on the inner wall of the chuck (6). A ball (903) and a spring (907) are respectively provided in the inner cavity of the oil guide pipe (906).

2. The anti-bearing detachment device for printing press rollers according to claim 1, characterized in that: The connecting assembly (8) includes a guide groove (801), the inner wall of the chuck (6) is provided with a square groove (802), the inner cavity of the guide groove (801) is provided with a trapezoidal insert (803) and a connecting rod (804), the outer wall of the connecting rod (804) is provided with a spring (808), the outer wall of the trapezoidal insert (803) is fixedly connected to one end of a steel wire rope (805), the other end of the steel wire rope (805) is fixedly connected to a pull button (807), and the inner wall of the square groove (802) is rotatably connected to a turntable (806).

3. The printing press roller anti-bearing detachment device according to claim 2, characterized in that: The trapezoidal insert (803), connecting rod (804), wire rope (805), turntable (806), and spring (808) are considered as a movable component, and there are two movable components respectively symmetrically arranged with the arc-shaped mounting block (4) as the center. The outer walls of the two trapezoidal inserts (803) are slidably fitted to the outer wall of the arc-shaped mounting block (4). The outer wall of the connecting rod (804) has the same shape as the inner wall of the slot (5), and the outer wall of the connecting rod (804) is adapted to the inner wall of the slot (5).

4. The printing press roller anti-bearing detachment device according to claim 1, characterized in that: The chuck (6) has the same diameter as the bearing body (3), and its inner wall is slidably fitted to the outer wall of the arc-shaped mounting block (4).

5. The printing press roller anti-bearing detachment device according to claim 1, characterized in that: The guide groove (902), the baffle plate (904) and the oil-immersed rod (905) are considered as a set of movable components, and the number of such movable components is two, respectively centered on the circular groove (7) and corresponding to the inner ring and outer ring of the bearing body (3).

6. The printing press roller anti-bearing detachment device according to claim 1, characterized in that: The outer wall of the sphere (903) is in contact with the inner wall of the oil guide tube (906), and its diameter is larger than the diameter of the opening of the oil guide tube (906). The second spring (907) is located at the bottom of the sphere (903), with one end overlapping the outer wall of the sphere (903) and the other end overlapping the bottom cross section of the oil guide tube (906).

Images