Spacing-adjustable rubber strip cutting machine

Abstract

The utility model discloses a spacing-adjustable rubber strip cutting machine, which comprises a rack, a cutter shaft and a plurality of blades, the cutter shaft is rotationally installed on the rack, one end of the cutter shaft penetrates through the rack and is fixedly connected with an output shaft of the servo motor, and the servo motor is fixedly installed on the cutter rest; the blade is coaxially and fixedly provided with a shaft sleeve, the shaft sleeve is in sliding fit with the cutter shaft, long keys are arranged on the two sides of the cutter shaft in a protruding mode, and key grooves in sliding fit with the long keys are formed in the shaft sleeve. A knife rest is rotationally mounted on the outer side of the blade; a smooth shaft is fixedly installed on the machine frame, a positioning block is fixedly installed at one end of the smooth shaft, sliding holes in sliding fit with the smooth shaft are formed in the tool rests, a length adjusting structure is installed between every two adjacent tool rests corresponding to the smooth shaft, and a pushing structure used for pushing the tool rests is further installed on the machine frame. The rubber strip cutting machine with the adjustable distance has the advantages that the cutter does not need to be disassembled, operation is easy, and use is convenient.

Description

Technical Field

[0001] This utility model relates to the field of rubber strip cutting machine technology, and in particular to a rubber strip cutting machine with adjustable spacing. Background Technology

[0002] Rubber is a highly elastic polymer material with reversible deformation. It is elastic at room temperature, capable of large deformation under small external forces, and returns to its original shape after the force is removed. Rubber is a completely amorphous polymer with a low glass transition temperature (Tg) and a very high molecular weight, often exceeding hundreds of thousands. After production, rubber needs to be cut into strips using a strip cutter.

[0003] To meet different strip width requirements, the position of the cutting blade needs to be adjusted when using a strip cutting machine to cut rubber into strips. Currently, adjusting the position of the cutting blade requires disassembling the cutting blade locking device, measuring the positions of two adjacent cutting blades to ensure they are within acceptable limits, and then using the cutting blade locking device to fix the cutting blade in its current position. This operation is cumbersome, time-consuming, and cannot meet the requirements. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by this patent application is how to provide a rubber strip cutter with adjustable spacing that does not require disassembly of the blade, is simple to operate, and is easy to use.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] An adjustable-pitch rubber strip cutting machine includes a frame, a cutter shaft, and several blades;

[0007] The cutter shaft is rotatably mounted on the frame. One end of the cutter shaft passes through the frame and is fixedly connected to the output shaft of the servo motor. The servo motor is fixedly mounted on the tool holder. The blade is coaxially fixedly mounted with a bushing. The bushing slides with the cutter shaft. Long keys protrude from both sides of the cutter shaft. The bushing has a keyway that slides with the long keys. The tool holder is rotatably mounted on the outer side of the blade.

[0008] An optical axis is fixedly installed on the frame, and a positioning block is fixedly installed at one end of the optical axis. The tool holder has a sliding hole that slides with the optical axis. A length adjustment structure is installed between two adjacent tool holders corresponding to the optical axis. A pressing structure for pressing the tool holder is also installed on the frame.

[0009] In this way, the servo motor drives the cutter shaft to rotate, which, with the cooperation of the long key and keyway, drives the blade to rotate, thus cutting the rubber into strips. When cutting rubber strips of different widths, the length adjustment structure needs to be adjusted, thereby adjusting the position between adjacent blade holders and adjusting the distance between adjacent blades. After adjustment, the blade holders are pressed together using a pressing structure to fix their relative positions. The positioning block is used to position the blade on one side, and the position of the other blades is adjusted based on this blade.

[0010] The length adjustment structure includes an external threaded cylinder and an internal threaded cylinder. The internal threaded cylinder is installed on the outside of the external threaded cylinder through a threaded fit. The external threaded cylinder has a through hole that slides with the optical axis. A limit block is fixedly installed at one end of the external threaded cylinder. The two sides of the optical axis are recessed to form long grooves. A slider that slides with the long grooves is protruding from the inside of the external threaded cylinder. The limit block and the end of the internal threaded cylinder away from the limit block are respectively attached to the tool holders located on both sides.

[0011] The push-tightening structure includes a screw rotatably mounted on the frame and a long rod fixedly mounted on the frame. One end of the screw passes through the frame and is fixedly connected to the handle. A nut is threaded onto the screw and fixedly mounted on the mounting base. The mounting base has a through hole that slides with the long rod. A cylinder is fixedly mounted on the mounting base. The cylinder rod passes downward through the mounting base and a push block is fixedly mounted thereon. The push block has a clearance opening facing the optical axis.

[0012] Guide rods are fixedly installed on both sides of the frame, and guide holes that slide with the guide rods are provided through both sides of the tool holder.

[0013] The tool holder includes a first frame and a second frame, which are respectively disposed on both sides of the blade. The first frame and the second frame are connected to the bushing via bearings. The first frame and the second frame are fixedly connected. The sliding hole is opened at the upper end of the first frame and the second frame, and the guide hole is disposed on both sides of the first frame and the second frame.

[0014] In summary, this adjustable-gap rubber strip cutter has the advantages of not requiring disassembly of the cutter, simple operation, and ease of use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a rubber strip cutting machine with adjustable spacing according to the present invention.

[0016] Figure 2 for Figure 1 A partial schematic diagram.

[0017] Figure 3This is an exploded view of the tool holder and the blade.

[0018] Figure 4 This is an enlarged schematic diagram of an externally threaded cylinder and an internally threaded cylinder.

[0019] Figure 5 This is an enlarged schematic diagram of an externally threaded cylinder. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings. In the description of the present invention, it should be understood that directional terms such as "upper," "lower," "top," and "bottom" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are used only for the convenience of describing the present invention and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as limiting the scope of protection of the present invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0021] like Figure 1-5 As shown, a rubber strip cutting machine with adjustable spacing includes a frame 1, a cutter shaft 2, and several blades 3;

[0022] The cutter shaft is rotatably mounted on the frame. One end of the cutter shaft passes through the frame and is fixedly connected to the output shaft of the servo motor 4. The servo motor is fixedly mounted on the tool holder. The blade is coaxially fixedly mounted with a bushing 5. The bushing slides with the cutter shaft. Long keys 6 are protruding on both sides of the cutter shaft. The bushing has a keyway 7 that slides with the long keys. The tool holder 8 is rotatably mounted on the outer side of the blade.

[0023] An optical axis 9 is fixedly installed on the frame, and a positioning block 10 is fixedly installed at one end of the optical axis. The tool holder has a sliding hole 11 that slides with the optical axis. A length adjustment structure 12 is installed between two adjacent tool holders corresponding to the optical axis. A pushing and tightening structure for pushing and tightening the tool holder is also installed on the frame.

[0024] In this way, the servo motor drives the cutter shaft to rotate, which, with the cooperation of the long key and keyway, drives the blade to rotate, thus cutting the rubber into strips. When cutting rubber strips of different widths, the length adjustment structure needs to be adjusted, thereby adjusting the position between adjacent blade holders and adjusting the distance between adjacent blades. After adjustment, the blade holders are pressed together using a pressing structure to fix their relative positions. The positioning block is used to position the blade on one side, and the position of the other blades is adjusted based on this blade.

[0025] In implementation, the length adjustment structure includes an external threaded cylinder 13 and an internal threaded cylinder 14. The internal threaded cylinder is installed on the outside of the external threaded cylinder via a threaded fit. The external threaded cylinder has a through hole that slides with the optical axis. A limiting block 15 is fixedly installed at one end of the external threaded cylinder. The two sides of the optical axis are recessed to form elongated grooves 16. A slider 17 protrudes from the inside of the external threaded cylinder and slides with the elongated groove. The ends of the limiting block and the internal threaded cylinder away from the limiting block are respectively attached to the tool holders located on both sides. When adjusting the distance between adjacent blades, the slider on the inside of the external threaded cylinder is located in the elongated groove, limiting the rotation of the external threaded cylinder. Rotating the internal threaded cylinder causes the internal thread head to move and rotate relative to the external threaded cylinder, thus achieving length adjustment. The ends of the limiting block and the internal threaded cylinder away from the limiting block are respectively attached to the tool holders located on both sides, thus achieving adjustment of the distance between two adjacent blades.

[0026] In implementation, the pressing structure includes a screw 18 rotatably mounted on the frame and a long rod 19 fixedly mounted on the frame. One end of the screw passes through the frame and is fixedly connected to a handle 20. A nut is threaded onto the screw and fixedly mounted on a mounting base 21. The mounting base has a through hole for sliding engagement with the long rod. A cylinder 22 is fixedly mounted on the mounting base. The cylinder rod passes downward through the mounting base and a push block 23 is fixedly mounted thereon. The push block has a clearance opening facing the optical axis. After the blade position is adjusted, the cylinder drives the cylinder rod to extend downward, so that the push block faces the tool holder. Rotating the handle drives the screw to rotate, and under the guidance of the long rod, it moves the mounting base, causing the push block to abut against the tool holder, thus fixing the position of the tool holder.

[0027] In implementation, guide rods 24 are fixedly installed on both sides of the frame, and guide holes 25 that slide with the guide rods are provided through both sides of the tool holder. This facilitates the guidance of the tool holder and makes the tool holder more stable.

[0028] In implementation, the tool holder includes a first frame 26 and a second frame 27, which are respectively disposed on both sides of the blade. The first and second frames are connected to the bushing via bearings 28 and are fixedly connected. A sliding hole is formed at the upper end of the first and second frames, and guide holes are disposed on both sides of the first and second frames. The first and second frames allow for stable installation of the blade. A nut is embedded in the second frame, and bolts pass through the first and second frames and connect to the nut, thus fixing the first and second frames.

[0029] Finally, it should be noted that those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A pitch adjustable rubber slitter comprising a frame (1), characterized in that, Also include the knife shaft (2) and several blades (3); The knife shaft is rotatably mounted on the rack, one end of the knife shaft passes through the rack and is fixedly connected with the output shaft of the servo motor (4), and the servo motor is fixedly mounted on the knife rest; The shaft sleeve (5) is coaxially fixedly installed on the blade, the shaft sleeve is in sliding fit with the knife shaft, long keys (6) are arranged on the two sides of the knife shaft, and key grooves (7) are formed in the shaft sleeve and in sliding fit with the long keys; The outer side of the blade is rotatably provided with a knife rest (8); The rack is fixedly provided with an optical axis (9), one end of the optical axis is fixedly provided with a positioning block (10), the knife rest is provided with a sliding hole (11) in sliding fit with the optical axis, and a length adjusting structure (12) is arranged between the adjacent two knife rests corresponding to the optical axis, and a tightening structure for tightening the knife rest is further arranged on the rack.

2. The spacing adjustable rubber slitter as claimed in claim 1, wherein, The length adjusting structure comprises an outer threaded cylinder (13) and an inner threaded cylinder (14), the inner threaded cylinder is installed on the outer side of the outer threaded cylinder in threaded fit, the outer threaded cylinder is provided with an optical hole in sliding fit with the optical axis, one end of the outer threaded cylinder is fixedly provided with a limiting block (15), the two sides of the optical axis are concave to form long grooves (16), and the inner side of the outer threaded cylinder is protrudingly provided with sliding blocks (17) in sliding fit with the long grooves; The limiting block and the inner threaded cylinder, away from the limiting block, are respectively attached to the two knife rests.

3. A pitch adjustable rubber slitter as claimed in claim 2, wherein, The tightening structure comprises a screw rod (18) rotatably mounted on the rack and a long rod (19) fixedly mounted on the rack, one end of the screw rod passes through the rack and is fixedly connected with a handle (20), a nut is threadedly connected on the screw rod, the nut is fixedly mounted on a mounting seat (21), the mounting seat is provided with a through hole in sliding fit with the long rod, a pneumatic cylinder (22) is fixedly mounted on the mounting seat, a cylinder rod of the pneumatic cylinder passes through the mounting seat downward and is fixedly provided with a push block (23), and the push block is provided with a gap opposite to the optical axis.

4. A pitch adjustable rubber slitter as claimed in claim 3, wherein, The two sides of the rack are fixedly provided with guide rods (24), and the two sides of the knife rest are provided with guide holes (25) in sliding fit with the guide rods.

5. A pitch adjustable rubber slitter as claimed in claim 4, wherein, The knife rest comprises a first frame body (26) and a second frame body (27), the first frame body and the second frame body are arranged on the two sides of the blade respectively, the first frame body and the second frame body are connected through bearings (28), the first frame body and the second frame body are fixedly connected, the sliding hole is formed in the upper ends of the first frame body and the second frame body, and the guide hole is arranged on the two sides of the first frame body and the second frame body.

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