Polyurethane printing rubber roller with high stability

Abstract

The utility model discloses a polyurethane printing rubber roller with strong stability, which comprises a core shaft and a polyurethane rubber body which are bonded in a vulcanization mode, clamping grooves are arranged on two sides of the polyurethane rubber body, clamping pieces are arranged at two ends of the core shaft, each clamping piece comprises a connecting cylinder, a baffle is arranged on the inner side of each connecting cylinder, and a clamping protruding block is arranged on the inner side of each baffle. According to the polyurethane printing rubber roller, the double fixing modes of vulcanization bonding and the clamping pieces are used, and the stability and durability of the polyurethane printing rubber roller are improved. The structure formed by the spring and the telescopic rod in the clamping piece not only optimizes the fixing effect, but also provides a damping and buffering function, the influence of vibration and impact on the rubber roller is effectively reduced, and therefore the service life is prolonged. In addition, due to the threaded connection design of the clamping pieces, maintenance and replacement become more convenient and faster, and the overall use efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a polyurethane printing rubber roller with strong stability. Background Art

[0002] Traditional polyurethane printing rollers are usually composed of a core shaft and an outer layer of polyurethane colloid, which plays the role of transferring ink and imprinting media during the printing process. The polyurethane colloid and the core shaft are usually bonded together through a vulcanization process without any other fixed structure. Over time, the polyurethane colloid and the core shaft may fall off or become loose due to problems with long-term use or environmental changes. This phenomenon will not only significantly reduce the printing quality, but may also have an adverse effect on the stability of the equipment. Utility Model Content

[0003] The main purpose of the utility model is to provide a polyurethane printing rubber roller with strong stability to solve the problems raised in the above background technology.

[0004] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0005] A polyurethane printing rubber roller with strong stability comprises a vulcanized and bonded core shaft and a polyurethane colloid, wherein the polyurethane colloid is provided with a retaining groove on both sides, and retaining pieces are provided at both ends of the core shaft, wherein the retaining piece comprises a connecting tube, a baffle is provided on the inner side of the connecting tube, and a retaining convex block is provided on the inner side of the baffle.

[0006] Preferably, the core shaft is provided with keys along its length direction, and the polyurethane colloid is provided with keyways.

[0007] Preferably, an annular groove is provided on the locking protrusion, a plurality of springs are provided inside the annular groove, and a pressure plate is provided on the plurality of springs.

[0008] Preferably, the free length of the spring is greater than the depth of the annular groove.

[0009] Preferably, a telescopic rod is provided inside the spring, and two ends of the telescopic rod are respectively connected to the annular groove and the pressure plate.

[0010] Preferably, eight springs are provided, and the eight springs are in the annular groove and evenly distributed along the circumference thereof.

[0011] Preferably, insertion plates inserted into the annular grooves are provided on both sides of the bottom surface of the pressure plate.

[0012] Preferably, both ends of the core shaft are provided with external threads, and the inner side of the connecting tube is provided with internal threads.

[0013] Beneficial technical effects of the utility model:

[0014] The utility model uses a dual fixing method of vulcanization bonding and a clamping piece to improve the stability and durability of the polyurethane printing rubber roller. The spring and telescopic rod structure in the clamping piece not only optimizes the fixing effect, but also provides a shock-absorbing and buffering function, effectively reducing the impact of vibration and impact on the rubber roller, thereby extending the service life. In addition, the threaded connection design of the clamping piece makes maintenance and replacement more convenient and quick, improving the overall use efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of a polyurethane printing rubber roller according to an embodiment of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the mandrel and polyurethane colloid of an embodiment of the utility model;

[0017] Figure 3 A cross-sectional view of the polyurethane printing rubber roller structure of an embodiment of the utility model;

[0018] Figure 4 This is a schematic diagram of the overall structure of the embodiment of the utility model without using the clamping piece;

[0019] Figure 5 This is a schematic diagram of the internal structure of the embodiment of the utility model without using the locking member.

[0020] In the figure: 1, core shaft; 2, polyurethane colloid; 3, locking groove; 4, locking piece; 5, connecting tube; 6, baffle; 7, locking protrusion; 8, key; 9, keyway; 10, ring groove; 11, spring; 12, pressure plate; 13, telescopic rod; 14, insertion plate. DETAILED DESCRIPTION

[0021] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is further described in detail below in conjunction with embodiments and drawings, but the implementation methods of the present invention are not limited thereto.

[0022] like Figure 1-Figure 5 As shown, the present embodiment provides a polyurethane printing rubber roller with strong stability, comprising a vulcanized and bonded core shaft 1 and a polyurethane colloid 2, wherein the polyurethane colloid 2 is provided with a locking groove 3 on both sides, and the core shaft 1 is provided with a locking piece 4 at both ends, and the locking piece 4 comprises a connecting tube 5, and the connecting tube 5 is provided with a baffle 6 on the inner side, and the baffle 6 is provided with a locking protrusion 7 on the inner side. During installation, the locking piece 4 is inserted from one end of the core shaft 1, and the locking protrusion 7 is inserted into the locking groove 3, so that the baffle 6 is tightly attached to the end face of the polyurethane colloid 2, and a mechanical fixing method is added to make the polyurethane printing rubber roller more stable and have a longer service life.

[0023] In this embodiment, if Figure 2As shown, a key 8 is provided on the core shaft 1 along its length direction, and a key groove 9 is provided on the polyurethane colloid 2 to prevent the core shaft 1 and the polyurethane colloid 2 from rotating relative to each other.

[0024] In this embodiment, if Figure 5 As shown, an annular groove 10 is provided on the locking protrusion 7, and multiple springs 11 are provided inside the annular groove 10. A pressure plate 12 is provided on the multiple springs 11. The free length value of the spring 11 is greater than the depth value of the annular groove 10. When the locking protrusion 7 is inserted into the locking groove 3, the spring 11 will be compressed by the pressure plate 12, and finally the pressure plate 12 will be completely pressed into the locking groove 3. Through the reaction force of the compression spring 11, the fixing effect of the locking member 4 is better, and at the same time a certain shock-absorbing and buffering effect is provided.

[0025] In this embodiment, if Figure 5 As shown, a telescopic rod 13 is provided inside the spring 11, and the two ends of the telescopic rod 13 are respectively connected to the annular groove 10 and the pressure plate 12, which limits the compression direction of the spring 11, enhances the stability of the spring 11, and ensures that the spring 11 can still maintain good performance during long-term use.

[0026] In this embodiment, if Figure 5 As shown, eight springs 11 are provided, and the eight springs 11 are evenly distributed in the annular groove 10 and along its circumference, thereby ensuring even transmission of force and further improving the fixing and shock absorbing effects.

[0027] In this embodiment, if Figure 5 As shown, inserting plates 14 inserted into the annular groove 10 are arranged on both sides of the bottom surface of the pressing plate 12 to ensure that the pressing plate 12 can be accurately pressed into the annular groove 10 .

[0028] In this embodiment, if Figure 3 As shown, both ends of the core shaft 1 are provided with external threads, and the inner side of the connecting tube 5 is provided with internal threads, which provides a reliable fixing effect, facilitates the installation and disassembly process, and improves the maintenance efficiency of the equipment.

[0029] In summary, in this embodiment, the dual fixing method of vulcanization bonding and the clamping member 4 is used to improve the stability and durability of the polyurethane printing rubber roller. The spring 11 and the telescopic rod 13 in the clamping member 4 not only optimize the fixing effect, but also provide a shock-absorbing and buffering function, effectively reducing the impact of vibration and impact on the rubber roller, thereby extending the service life. In addition, the threaded connection design of the clamping member 4 makes maintenance and replacement more convenient and quick, and improves the overall use efficiency.

[0030] The above is only a further embodiment 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 scope disclosed by the present invention according to the technical solution and concept of the present invention, which fall within the protection scope of the present invention.

Claims

1. A polyurethane printing rubber roller with high stability, comprising a vulcanized and bonded core shaft (1) and a polyurethane colloid (2), characterized in that: The polyurethane colloid (2) is provided with a locking groove (3) on both sides, and the core shaft (1) is provided with a locking piece (4) at both ends. The locking piece (4) comprises a connecting tube (5), a baffle (6) is provided on the inner side of the connecting tube (5), and a locking protrusion (7) is provided on the inner side of the baffle (6).

2. The polyurethane printing rubber roller with high stability according to claim 1, characterized in that: The core shaft (1) is provided with a key (8) along its length direction, and the polyurethane colloid (2) is provided with a keyway (9).

3. The polyurethane printing rubber roller with strong stability according to claim 1, characterized in that: The locking protrusion (7) is provided with an annular groove (10), a plurality of springs (11) are provided inside the annular groove (10), and a pressure plate (12) is provided on the plurality of springs (11).

4. The polyurethane printing rubber roller with high stability according to claim 3, characterized in that: The free length of the spring (11) is greater than the depth of the annular groove (10).

5. The polyurethane printing rubber roller with high stability according to claim 3, characterized in that: A telescopic rod (13) is arranged inside the spring (11), and two ends of the telescopic rod (13) are respectively connected to the annular groove (10) and the pressure plate (12).

6. The polyurethane printing rubber roller with high stability according to claim 3, characterized in that: Eight springs (11) are provided, and the eight springs (11) are in the annular groove (10) and evenly distributed along the circumference thereof.

7. The polyurethane printing rubber roller with high stability according to claim 3, characterized in that: Insertion plates (14) inserted into the annular groove (10) are arranged on both sides of the bottom surface of the pressure plate (12).

8. The polyurethane printing rubber roller with high stability according to claim 1, characterized in that: External threads are provided at both ends of the core shaft (1), and internal threads are provided on the inner side of the connecting tube (5).

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