Quick roll changing device

Abstract

The utility model discloses a quick roll changing device which comprises wallboards, the two wallboards are arranged in a bilateral symmetry mode, a press roll is arranged between the wallboards, the press roll comprises a mandrel and a rubber sleeve, the rubber sleeve is sleeved on the mandrel, two ends of the mandrel are connected with bearings through bearing seats, and the left wallboard is provided with a locking arm and a left press roll seat. A right side wall plate is provided with a right pressing roller seat and a right clamping air cylinder, a bearing seat on the right side of the core shaft is fixedly connected with the right pressing roller seat, and the diameter of the right side of the core shaft is larger than that of the left side of the core shaft. The rubber sleeve replacing device is reasonable and ingenious in structural design, when the rubber sleeve needs to be replaced, the right clamping air cylinder is lifted to clamp the right side of the mandrel, the left side locking arm is loosened, the left side of the mandrel is suspended, after the mandrel is ventilated, the rubber sleeve is expanded, the diameter of the left side of the mandrel is small, the rubber sleeve slides off from the left side and is taken down, reverse operation is conducted, and a rubber roller with the proper size is replaced conveniently and rapidly.

Description

Quick Roll Changer Technical Field

[0001] This utility model relates to a quick roller changing device. Background Technology

[0002] To meet the needs of printing materials of different sizes and materials, the pressure rollers on the printing press need to be replaced. Traditional pressure rollers are directly connected to the printing press wall plate using a coupling. When changing rollers, the whole thing needs to be disassembled and then moved manually or mechanically, which is a cumbersome operation. Summary of the Invention

[0003] To overcome the above-mentioned shortcomings, this utility model provides a quick roller changing device that can quickly replace the rubber sleeve of the pressure roller without disassembling the mandrel.

[0004] To achieve this objective, the structure adopted in this utility model is as follows: a quick roller changing device, including a frame, a left wall panel and a right wall panel, the two wall panels are symmetrically arranged, and a pressure roller is set in the middle. The pressure roller includes a mandrel and a rubber sleeve, the rubber sleeve is fitted on the mandrel, and the two ends of the mandrel are connected to bearings through bearing seats; a left clamping cylinder is connected to the left wall panel, the bottom of the left clamping cylinder is connected to the left pressure roller seat, one side of the left pressure roller seat is connected to the left wall panel through a lifting mechanism, the left pressure roller seat is set above the left bearing seat of the mandrel, a locking arm is set below the left side of the mandrel, the locking arm has an L-shaped structure, the locking arm hooks the bearing seat at the end of the mandrel, the locking arm is connected to the piston rod of the cylinder, and the cylinder is connected to the left pressure roller seat; a right clamping cylinder is connected to the right wall panel, the bottom of the right clamping cylinder is connected to the right pressure roller seat, one side of the right pressure roller seat is connected to the right wall panel through a lifting mechanism, and the right pressure roller seat is fixedly connected to the bearing seat on the right side of the mandrel.

[0005] The diameter of the right side of the mandrel is larger than that of the left side. The mandrel is a hollow structure with air holes on its surface. An air nozzle is located on the right side of the mandrel, and the air nozzle is connected to the center of the mandrel.

[0006] The lifting mechanism includes a synchronous shaft, with a left rack and a right rack meshing on the left and right sides of the synchronous shaft respectively via gears; the left rack is connected to the left pressure roller seat, and a slider is connected to one side of the left rack, which is connected to the left side wall panel via a guide rail; the right rack is connected to the right pressure roller seat, and a slider is connected to one side of the right rack, which is connected to the right side wall panel via a guide rail.

[0007] A protective frame is provided below the pressure roller. The protective frame is an arc-shaped support. The left pressure roller seat and the right pressure roller seat are connected to each other on both sides of the protective frame by a guide rod. A spring is provided on the guide rod.

[0008] One or more bracing members are provided between the left and right wall panels.

[0009] A guide frame is provided below the left pressure roller seat. The guide frame is a groove structure with its opening facing the locking arm, and the locking arm is located inside the guide frame.

[0010] The left and right wall panels are provided with working holes corresponding to the pressure roller positions.

[0011] Its beneficial effects are: the structure of this utility model is reasonable and ingenious. When it is necessary to replace the rubber sleeve, the right clamping cylinder lifts and clamps the right side of the mandrel, while the left locking arm is released, so that the left side of the mandrel is suspended. After the mandrel is ventilated, the rubber sleeve expands and, because the diameter of the left side of the mandrel is smaller, the rubber sleeve slides off from the left side and is removed. The operation is reversed to replace the rubber roller of the appropriate size, which is convenient and quick. Attached Figure Description

[0012] This utility model will be described by way of example and with reference to the accompanying drawings, wherein:

[0013] Figure 1 is a three-dimensional structural diagram of this utility model;

[0014] Figure 2 is a structural diagram of the left wall panel;

[0015] Figure 3 is a structural diagram of the right wall panel. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0017] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components; a fixed connection can be welding or adhesive bonding. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] As shown in Figures 1-3, the quick roller changing device includes a frame 1, which comprises a left wall panel 11 and a right wall panel 12, symmetrically arranged. A pressure roller 2 is positioned in the middle, comprising a spindle 21 and a rubber sleeve 22. The rubber sleeve 22 is fitted onto the spindle 21 and is made of fiberglass tubing with rubber attached to its surface. Bearings are connected to both ends of the spindle 21 via bearing seats. As shown in Figure 2, a left clamping cylinder 51 is connected to the left wall panel 11, and a left pressure roller seat 71 is connected to the bottom of the left clamping cylinder 51. One side of the left pressure roller seat 71 is connected to the left wall panel 11 via a lifting mechanism. The left pressure roller seat 71 is positioned above the left bearing seat of the spindle 21, and during operation, the left pressure roller seat 71 presses down on the end of the pressure roller 2. A locking arm 4 is installed on the lower left side of the mandrel 21. The locking arm 4 has an L-shaped structure and hooks onto the bearing seat at the end of the mandrel 21. The locking arm 4 is connected to the piston rod of the cylinder 3, which is connected to the left pressure roller seat 71. The cylinder 3 is used to clamp and release the mandrel 21. As shown in Figure 3, a right clamping cylinder 52 is connected to the right wall plate 12. The bottom of the right clamping cylinder 52 is connected to the right pressure roller seat 72. One side of the right pressure roller seat 72 is connected to the right wall plate 12 through a lifting mechanism. The right pressure roller seat 72 is fixedly connected to the bearing seat on the right side of the mandrel 21.

[0020] When the rubber sleeve needs to be replaced, the right clamping cylinder 52 lifts and clamps the right side of the spindle 21, while the left locking arm 4 is released. One side of the pressure roller 21 loses support and bends downward, causing the left side of the pressure roller 2 to be suspended. The rubber sleeve 22 is then removed from the left side, and the operation is reversed to replace it with a rubber roller of the appropriate size, which is convenient and quick.

[0021] The mandrel 21 has a larger diameter on the right side than on the left side. The mandrel 21 is hollow and has air holes on its surface. An air nozzle is located on the right side of the mandrel 21, connected to the center of the mandrel 21. When replacing the rubber sleeve 22, air is introduced into the mandrel 21 through the air nozzle, causing the rubber sleeve 22 to expand with a gap of about 1 mm. Because one end of the mandrel 21 is larger than the other, the mandrel 21 will automatically slip off, making it easier to reattach the replacement rubber sleeve.

[0022] The lifting mechanism includes a synchronous shaft 9. Gears mesh between the left and right sides of the synchronous shaft 9, connecting a left rack 81 and a right rack 82 respectively. The left rack 81 is connected to a left pressure roller seat 71, and a slider is connected to one side of the left rack 81. The slider is connected to the left side wall panel 11 via a guide rail 6. The right rack 82 is connected to a right pressure roller seat 72, and a slider is connected to one side of the right rack 82. The slider is connected to the right side wall panel 12 via a guide rail 6. The synchronous shaft 9 ensures the synchronous lifting of the left and right pressure roller seats 71 and 72.

[0023] A protective frame 14 is provided below the pressure roller 2. The protective frame 14 is an arc-shaped support. The left pressure roller seat 71 and the right pressure roller seat 72 are connected to the two sides of the protective frame 14 by a guide rod 13. A spring is provided on the guide rod 13.

[0024] One or more supports 15 are provided between the left wall panel 11 and the right wall panel 12 to ensure the stability of the frame 1.

[0025] A guide frame is provided below the left pressure roller seat 71. The guide frame is a groove structure with its opening facing the locking arm 4, and the locking arm 4 is located inside the guide frame.

[0026] The left wall panel 11 and the right wall panel 12 are provided with working holes 10 at the corresponding positions of the pressure rollers. When the rubber sleeve 22 is replaced, the replaced rubber sleeve 22 enters and exits through the working hole.

[0027] Based on the above description and inspired by this utility model, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A quick roll changing device, comprising a frame (1), the frame (1) including a left side wall plate (11) and a right side wall plate (12), characterized in that, Two wall panels are symmetrically arranged on the left and right, with a pressure roller (2) in the middle. The pressure roller (2) includes a spindle (21) and a rubber sleeve (22). The rubber sleeve (22) is fitted on the spindle (21). The two ends of the spindle (21) are connected to bearings through bearing seats. A left clamping cylinder (51) is connected to the left wall panel (11). The bottom of the left clamping cylinder (51) is connected to the left pressure roller seat (71). One side of the left pressure roller seat (71) is connected to the left wall panel (11) through a lifting mechanism. The left pressure roller seat (71) is located above the bearing seat on the left side of the spindle (21). A locking arm (4) is set on the lower left side. The locking arm (4) is an L-shaped structure. The locking arm (4) hooks the bearing seat at the end of the spindle (21). The locking arm (4) is connected to the piston rod of the cylinder (3). The cylinder (3) is connected to the left pressure roller seat (71). The right clamping cylinder (52) is connected to the right wall plate (12). The bottom of the right clamping cylinder (52) is connected to the right pressure roller seat (72). One side of the right pressure roller seat (72) is connected to the right wall plate (12) through a lifting mechanism. The right pressure roller seat (72) is fixedly connected to the bearing seat on the right side of the spindle (21).

2. The quick roller changing device according to claim 1, characterized in that, The diameter of the right side of the mandrel (21) is larger than that of the left side. The mandrel (21) is a hollow structure with air holes on its surface. An air nozzle is provided on the right side of the mandrel (21) and the air nozzle is connected to the center of the mandrel.

3. The quick roller changing device according to claim 1, characterized in that, The lifting mechanism includes a synchronous shaft (9), with gears meshing on the left and right sides of the synchronous shaft (9) to a left rack (81) and a right rack (82); the left rack (81) is connected to the left pressure roller seat (71), and a slider is connected to one side of the left rack (81), which is connected to the left wall panel (11) via a guide rail (6); the right rack (82) is connected to the right pressure roller seat (72), and a slider is connected to one side of the right rack (82), which is connected to the right wall panel (12) via a guide rail (6).

4. The quick roll changing device according to claim 1, characterized in that, A protective frame (14) is provided below the pressure roller (2). The protective frame (14) is an arc-shaped support. The left pressure roller seat (71) and the right pressure roller seat (72) are connected to the two sides of the protective frame (14) by a guide rod (13). A spring is provided on the guide rod (13).

5. The quick roller changing device according to claim 1, characterized in that, One or more bracing rods (15) are provided between the left wall panel (11) and the right wall panel (12).

6. The quick roll changing device according to claim 1, characterized in that, A guide frame is provided below the left pressure roller seat (71). The guide frame is a groove structure with its opening facing the locking arm (4). The locking arm (4) is located inside the guide frame.

7. The quick roll changing device according to claim 1, characterized in that, Working holes (10) are provided on the left wall panel (11) and the right wall panel (12) corresponding to the pressure roller positions.

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