Split type folding machine roller

Abstract

The utility model relates to a split type folding machine roller which effectively solves the problem that a folding adhesive layer is difficult to replace. According to the technical scheme, the roller comprises a roller body and a rubber sleeve, the roller body is sleeved with the rubber sleeve in an expanded mode in an interference fit mode, the roller body is divided into a left half part and a right half part along an inclined face, an included angle is formed between the inclined face and the axis of the roller body, the inclined face is cut in from one end of the roller body and cut out from the other end of the roller body, and the left half part and the right half part are each in a wedge shape with one narrow end and one wide end. The left half part and the right half part can relatively slide along the cutting surface; a blocking piece is fixed to the upper end face of the right half part, one end of the blocking piece extends to the position above the left half part, a long groove in the left-right direction is formed in the blocking piece, a bolt parallel to the axial direction of the roller body is screwed to the upper end face of the left half part, the upper end of the bolt penetrates through the long groove, and the left half part can be pushed to slide along the cutting face relative to the right half part by screwing the bolt. The rubber sleeve can be easily replaced, the integrity of the rubber sleeve and the roller body is good due to the expanded connection mode, the outer wall of the rubber sleeve is complete, and paper feeding is stable.

Description

Technical Field

[0001] The utility model relates to the field of folding machines, in particular to a split-type folding machine roller. Background Art

[0002] The folding roller is the heart of the folding machine. The quality of the folding roller will directly affect the folding quality. The folding roller is composed of a steel core tube and a polyurethane rubber layer wrapped around the core tube. As the paper feeding amount of the folding roller gradually increases, the rubber layer will wear out. Minor wear can be adjusted by grinding. Theoretically, a maximum of 3 grindings are allowed. The rubber layer of the folding roller can no longer meet the use requirements. The folding roller needs to be sent to the manufacturer to re-cast the rubber layer, which will greatly affect the production efficiency of the folding machine. Therefore, it is hoped that the rubber layer can be replaced by oneself.

[0003] Application number: CN202222395045.6, name: A utility model patent for a roller lock rubber sleeve, discloses a roller with a replaceable rubber layer, which fixes the rubber layer to the roller by screws. This method will open holes on the surface of the rubber layer, destroying the integrity of the rubber layer, which may affect the stability of paper feeding for the folding roller. Moreover, the fixing force is concentrated at several fixed points by screw fixing, and the integrity of the rubber layer and the roller is poor.

[0004] There is also a method of expansion joint by interference fit in the prior art. However, since the inner diameter of the rubber layer is smaller than the outer diameter of the roller, it is difficult to disassemble and install. Summary of the invention

[0005] The utility model provides a split-type folding machine roller, aiming to solve the problem of difficulty in replacing the folding glue layer.

[0006] The technical solution includes a roller body and a rubber sleeve. The rubber sleeve is tightened on the roller body in an interference fit manner. The roller body is cut into a left half and a right half along an inclined plane. The inclined plane has an angle with the axis of the roller body. The inclined plane cuts into one end of the roller body and cuts out from the other end of the roller body. The left half and the right half are both wedge-shaped with one end narrow and the other end wide. The left half and the right half can slide relatively along the cutting plane; a baffle is fixed on the upper end surface of the right half, one end of the baffle extends to the top of the left half, and a long groove in the left and right directions is opened on the baffle. A bolt parallel to the axial direction of the roller body is screwed on the upper end surface of the left half, and the upper end of the bolt passes through the long groove. Twisting the bolt can push the left half to slide relative to the right half along the cutting plane.

[0007] The cutting surface of the right half is provided with a dovetail groove parallel to the cutting surface, and the cutting surface of the left half is provided with a slide rail matched with the dovetail groove, and the slide rail is inserted into the dovetail groove.

[0008] The baffles and bolts are arranged in two groups symmetrically front and back.

[0009] A core shaft is fixed to the large end of the left half and the large end of the right half, and the core shaft is coaxial with the roller body.

[0010] The utility model can easily replace the rubber sleeve, and the rubber sleeve and the roller body have good integrity in the expansion connection mode, the outer wall of the rubber sleeve is complete, and the paper feeding is stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a front sectional view of the utility model.

[0012] Figure 2 A three-dimensional diagram of the roller body.

[0013] Figure 3 This is the front view of the roller body when the left half and the right half are misaligned.

[0014] Figure 4 It is a three-dimensional diagram of the roller body when the left half and the right half are misaligned.

[0015] Figure 5 This is a stereogram of the left half.

[0016] Figure 6 This is a stereogram of the right half. DETAILED DESCRIPTION

[0017] In conjunction with the accompanying drawings, the utility model includes a roller body and a rubber sleeve 1, the rubber sleeve 1 is expanded and sleeved on the roller body in an interference fit manner, the roller body is cut into a left half 2 and a right half 3 along an inclined plane, the inclined plane has an angle with the axis of the roller body, the inclined plane cuts into one end of the roller body and cuts out from the other end of the roller body, the left half 2 and the right half 3 are both wedge-shaped with one end narrow and the other end wide, the left half 2 and the right half 3 can slide relatively along the cutting plane, when the end faces of the left half 2 and the right half 3 are flush to form a completed roller body, the roller cross section has a maximum circumference, the left half 2 and the right half 3 are The greater the sliding displacement of the half 3 along the cutting surface, the smaller the circumference of the roller cross section; a baffle 4 is fixed to the upper end surface of the right half 3, one end of the baffle 4 extends to the top of the left half 2, and a long groove 5 in the left and right directions is opened on the baffle 4. A bolt 6 parallel to the axial direction of the roller body is screwed on the upper end surface of the left half 2, and the upper end of the bolt 6 passes through the long groove 5. Tightening the bolt 6 can push the left half 2 to slide along the cutting surface relative to the right half 3. The long groove 5 can provide the bolt 6 with freedom to move left and right with the left half 2 when the left half 2 slides along the cutting surface.

[0018] The cutting surface of the right half 3 is provided with a dovetail groove 7 parallel to the cutting surface, and the cutting surface of the left half 2 is provided with a slide rail 8 that cooperates with the dovetail groove 7. The slide rail 8 is inserted into the dovetail groove 7 so that the left half 2 and the right half 3 can only slide along the cutting surface.

[0019] The baffles 4 and bolts 6 are arranged in two groups symmetrically in front and back, so that the left half 2 and the right half 3 can be fixed firmly when they are matched.

[0020] A core shaft 9 is fixed to the large end of the left half 2 and the large end of the right half 3. The core shaft 9 is coaxial with the roller body. The core shafts 9 at both ends are used to install the roller body on the frame of the folding machine.

[0021] When the rubber sleeve 1 needs to be replaced, the bolt 6 is first unscrewed outward, and then the left half 2 is pushed downward along the cutting surface to make the left half 2 and the right half 3 misaligned up and down. At this time, the cross-sectional circumference of the roller body becomes smaller, and the roller body and the rubber sleeve 1 become a clearance fit, so the old rubber sleeve 1 can be easily removed and the new rubber sleeve 1 can be easily put on. After putting on the new rubber sleeve 1, the bolt 6 is screwed inward. While the bolt 6 is screwed in, the left half 2 will be gradually pulled upward until the bolt 6 is completely tightened, and the end faces of the left half 2 and the right half 3 are flush to form a complete roller body. In this process, the cross-sectional circumference of the roller body gradually increases, and finally becomes an interference fit with the rubber sleeve 1. The rubber sleeve 1 is expanded and sleeved on the outer wall of the roller body to complete the replacement of the rubber sleeve 1.

[0022] The utility model uses a split roller body to achieve switching between clearance fit and interference fit with the rubber sleeve 1, so that the rubber sleeve 1 can be easily replaced without returning the roller to the factory for re-wrapping, which greatly shortens the time for replacing the roller rubber sleeve 1 and reduces the impact of replacing the rubber sleeve 1 on production efficiency; and the expansion joint method fixes the rubber sleeve 1 and the roller body through friction, so the rubber sleeve 1 and the roller body have good integrity, the outer wall of the rubber sleeve 1 is complete, and the paper feeding is stable.

Claims

1. A split-type folding machine roller, comprising a roller body and a rubber sleeve (1), wherein the rubber sleeve (1) is tightly sleeved on the roller body in an interference fit manner, and is characterized in that: The roller body is divided into a left half (2) and a right half (3) along an inclined plane, the inclined plane forms an angle with the axis of the roller body, the inclined plane is cut into one end of the roller body and cut out from the other end of the roller body, the left half (2) and the right half (3) are both wedge-shaped with one end narrow and the other end wide, and the left half (2) and the right half (3) can slide relative to each other along the cutting plane; a baffle (4) is fixed to the upper end surface of the right half (3), one end of the baffle (4) extends above the left half (2), and a long groove (5) in the left and right directions is opened on the baffle (4); a bolt (6) parallel to the axial direction of the roller body is screwed on the upper end surface of the left half (2), the upper end of the bolt (6) passes through the long groove (5), and the bolt (6) can be screwed to push the left half (2) to slide relative to the right half (3) along the cutting plane.

2. A split folding machine roller according to claim 1, characterized in that: The cutting surface of the right half (3) is provided with a dovetail groove (7) parallel to the cutting surface, and the cutting surface of the left half (2) is provided with a slide rail (8) matching with the dovetail groove (7), and the slide rail (8) is inserted into the dovetail groove (7).

3. A split folding machine roller according to claim 1, characterized in that: The baffles (4) and bolts (6) are arranged in two groups symmetrically in front and back.

4. A split folding machine roller according to claim 1, characterized in that: A core shaft (9) is fixed to the large end of the left half (2) and the large end of the right half (3), and the core shaft (9) is coaxial with the roller body.

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