Manual cutting tool

Abstract

This utility model provides a manual cutting tool for cutting toothed rubber, including a blade sheath, a blade, and at least two limiting wheels. The blade sheath has two wheel grooves and a blade groove on one side. The limiting wheels are rotatably mounted in the two wheel grooves located at both ends of the blade sheath. The blade is mounted in the blade groove, which is located between the two wheel grooves. A portion of the limiting wheel protrudes from the blade sheath, and the blade protrudes from the limiting wheel. The mounting axis of the blade is parallel to the mounting axis of the limiting wheel. Using this manual cutting tool, the limiting wheel moves along the tooth groove, keeping the blade at the center of the tooth groove, resulting in clean cuts. The tool is also small and flexible.

Description

Technical Field

[0001] This utility model relates to the field of transmission belt manufacturing technology, and in particular to a manual cutting tool for toothed rubber. Background Technology

[0002] Transmission belts play a crucial role in the transmission field, typically including friction drives or meshing drives. Friction drives include multi-ribbed belts, while synchronous meshing drives include synchronous belts. Both multi-ribbed belts and synchronous belts have spaced protrusions at the bottom, collectively referred to as toothed belts. Some production processes require cutting toothed rubber sleeves or toothed molds to obtain toothed rubber of different lengths, which are then spliced ​​together. Re-splicing requires precise cutting positions and neat edges. Large-scale automated cutting equipment can meet these requirements, but such equipment involves significant investment, occupies a large area, and has low utilization rates. Providing a small, flexible, manual cutting tool is a major advantage in solving this problem. Utility Model Content

[0003] This utility model provides a manual cutting tool for cutting toothed rubber to solve the above technical problem. It includes a blade sleeve, a blade, and at least two limiting wheels. The blade sleeve has two wheel grooves and a blade groove on one side. The limiting wheels are rotatably installed in the two wheel grooves located at both ends of the blade sleeve. The blade is installed in the blade groove, which is located between the two wheel grooves. The limiting wheel protrudes from the blade sleeve, and the blade protrudes from the limiting wheel. The mounting axis of the blade is parallel to the mounting axis of the limiting wheel.

[0004] The protruding blade is tilted forward along the direction of travel.

[0005] It includes a limit wheel mounting shaft, wherein the limit wheel is rotatably mounted on the mounting shaft, and both ends of the limit wheel mounting shaft are mounted on the tool sleeve.

[0006] There are two limiting wheels, and the two limiting wheels are located on the same axis as the blade.

[0007] There are three limit wheels, two of which are mounted on the same mounting shaft.

[0008] The blade sheath is shaped as two roughly symmetrical side sheaths, with the blade located between the two side sheaths.

[0009] One of the side blade sleeves is equipped with a blade groove.

[0010] The tool holder is provided with a handle, which is installed on the side of the tool holder away from the wheel groove.

[0011] The manual cutting tool of this invention reduces the investment in large equipment, while ensuring cutting stability. The tool is also compact, flexible and convenient. Attached Figure Description

[0012] Figure 1 A three-dimensional schematic diagram of the first embodiment;

[0013] Figure 2 Top view of the second embodiment;

[0014] Figure 3 Side view of the side blade sleeve in the second embodiment;

[0015] Figure 4 A stepped cross-sectional view of the second embodiment;

[0016] Figure 5 Top view of the third embodiment;

[0017] Figure 6 Side view of the third embodiment.

[0018] In the diagram, 1 is the tool holder; 2 is the blade; 3 is the limit wheel; 4 is the wheel groove; 5 is the tool groove; 6 is the cutting edge; 71 / 72 are the side tool holders; 8 is the handle; 9 is the mounting shaft; 10 is the handle groove; 11 is the shaft hole; 12 is the blade mounting hole; 13 is the tool holder mounting hole; and 15 is the tooth root. Detailed Implementation

[0019] The following is based on Figures 1 to 6 A detailed description is provided to facilitate a clearer understanding of the contents of this utility model.

[0020] like Figure 1 This is a three-dimensional schematic diagram of the first embodiment. The manual cutting tool includes a blade sheath 1, which is generally a cuboid structure. Two recessed wheel grooves 4 are provided on the front and back sides of one side of the blade sheath 1. Each wheel groove 4 can accommodate at least one limiting wheel 3. Figure 1 The diagram shows one groove housing a limiting wheel and another groove housing two limiting wheels. A cutting groove 5 is provided between the two grooves 4, and the blade 2 is fixed within the cutting groove 5 by bolts or pins. Limiting wheels 3 are mounted on the blade sleeve 1 via mounting shafts. The two rear limiting wheels are mounted on the same mounting shaft 9. The mounting axes of the limiting wheels in both grooves are parallel to the mounting axis of the blade, ensuring that the direction of movement of all limiting wheels 3 is consistent with the blade's orientation, and the blade's surface is perpendicular to the mounting shaft. Limiting wheels 3 can rotate around the mounting shaft 9, which is fixed at both ends to the blade sleeve 1. Both limiting wheels 3 and the blade protrude from the blade sleeve 1, with the blade 2 protruding from the limiting wheel. This allows the blade to cut the corresponding toothed rubber sleeve as the limiting wheel rotates forward; therefore, the height of the blade 2 protruding from the limiting wheel is determined by the toothed rubber sleeve.

[0021] Figures 2-4The diagram below illustrates the second embodiment. For ease of processing and installation, the tool holder is divided into two roughly symmetrical side tool holders 71 / 72. (For ease of description, the following description is based on the placement of the attached drawings; the width direction of the drawings represents front-to-back, and the top-to-bottom direction represents left-to-right.) Each side tool holder has a groove 4 on its front and rear sides. Preferably, the grooves on the left and right side tool holders are completely symmetrical. Tool holder mounting holes 13 can be provided on both sides, and the two sides are fixed together by bolts. The tool holder mounting holes 13 can be through holes on both side tool holders, through which fasteners are passed, and nuts are used for fastening at the other end. Alternatively, one side tool holder can have a through hole, and the other side tool holder can have a threaded hole, through which bolts are fastened to the threaded hole of the other side tool holder. A tool groove 5 is provided between the front and rear grooves 4. The tool groove 5 can be provided on a single side tool holder 72, located on the side of the side tool holder 72 closest to the other side tool holder 71. The depth of the tool groove can accommodate the thickness of the blade 2. When the two side tool holders are combined, the blade 2 is clamped between the two side tool holders. One of the wheel grooves 4 is fitted with a limiting wheel 3, and the other wheel groove can coaxially mount two limiting wheels 3. The two coaxial limiting wheels 3 are each installed in the wheel groove of their respective side blade sleeves. The three limiting wheels are each set according to the width between their corresponding toothed grooves 15. A limiting wheel in a single wheel groove 4 moves within the same toothed groove 15 as the blade. The two limiting wheels 3 located in the wheel grooves on the same mounting shaft 9 move along the toothed grooves on either side of the blade 2. The limiting wheels are rotatably mounted on the mounting shaft 9, with both ends of the shaft passing through shaft holes 11 corresponding to the two side blade sleeves, and one end locked by a thread. The two limiting wheels on the same mounting shaft can be a single unit. The three limiting wheels 3 move along their respective corresponding toothed grooves 15, positioning the blade 2 at the center of the toothed groove 15. The height of the blade 2 protruding from the limiting wheel is equal to or slightly greater than the thickness from the bottom of the toothed groove to the back of the toothed rubber, allowing the blade to cut along the toothed groove 15, dividing the toothed rubber into two parts with a neat and consistent seam, facilitating subsequent splicing. The cutting groove 5 is angled, tilted forward in the direction of travel, to facilitate cutting the toothed rubber sleeve with the cutting edge 6. Blade 2 and corresponding positions on the two side blade sleeves have blade mounting holes to lock the blade 2 in place with blade mounting pins, preventing rotation. Alternatively, a threaded hole can be provided on one side blade sleeve and another on the other side for bolt mounting of the blade.

[0022] Two side cutter sleeves are provided with handle grooves 10 on the side away from the wheel groove. The handle 8 is inserted into the handle groove 10 and tightened.

[0023] Figure 5 , Figure 6In the third embodiment, the tool holder is divided into two roughly symmetrical side tool holders 71 / 72. Each side tool holder has a groove 4 on its front and rear sides. The grooves on the left and right side tool holders are preferably completely symmetrical. Tool holder mounting holes 13 can be provided on both sides, and the two sides are fixed together by bolts. The tool holder mounting holes 13 can be through holes on both side tool holders, through which fasteners are fastened with nuts at the other end; alternatively, one side tool holder can have a through hole, and the other side tool holder can have a threaded hole, through which bolts are fastened to the threaded hole of the other side tool holder. A tool groove 5 is provided between the front and rear grooves 4. The tool groove 5 can be provided on one side tool holder 72, located on the side of the side tool holder 72 closer to the other side tool holder 71. The depth of the tool groove can accommodate the thickness of the blade 2. When the two side tool holders are combined, the blade 2 is clamped between the two side tool holders. Blade mounting holes are provided on the blade 2 at corresponding positions on the two side tool holders, so that the blade 2 can be locked by blade mounting pins to prevent the blade 2 from rotating. Alternatively, a threaded hole can be provided on one side of the cutter sleeve, and the cutter can be fixed with bolts. The front and rear wheel grooves on the two side cutter sleeves form a complete wheel groove, and a limit wheel (not shown) is installed in each wheel groove 4. The radial center plane of the limit wheel is in the same plane as the cutter. The limit wheel is rotatably mounted on the mounting shaft, and both ends of the mounting shaft pass through the shaft holes 11 corresponding to the two side cutter sleeves, with one end locked by threads.

Claims

1. A manual cutting tool for cutting toothed rubber, comprising a sheath and a blade, characterized in that, It also includes at least two limiting wheels. Two wheel grooves and a blade groove are provided on one side of the blade sleeve. The limiting wheels are rotatably installed in the two wheel grooves located at both ends of the blade sleeve. The blade is installed in the blade groove, which is located between the two wheel grooves. Both the limiting wheel and the blade protrude from the blade sleeve. The blade protrudes from the limiting wheel. The mounting axis of the blade is parallel to the mounting axis of the limiting wheel.

2. The manual cutting tool as described in claim 1, characterized in that, The protruding blade is tilted forward along the direction of travel.

3. The manual cutting tool as described in claim 2, characterized in that, It includes a limit wheel mounting shaft, wherein the limit wheel is rotatably mounted on the mounting shaft, and both ends of the limit wheel mounting shaft are mounted on the tool sleeve.

4. The manual cutting tool as described in claim 3, characterized in that, There are two limiting wheels, and the two limiting wheels are located on the same axis as the blade.

5. The manual cutting tool as described in claim 3, characterized in that, There are three limit wheels, two of which are mounted on the same mounting shaft.

6. The manual cutting tool as described in claim 1, characterized in that, The blade sheath is shaped as two roughly symmetrical side sheaths, with the blade located between the two side sheaths.

7. The manual cutting tool as described in claim 6, characterized in that, One of the side blade sleeves is equipped with a blade groove.

8. The manual cutting tool as described in claim 1, characterized in that, The tool holder is provided with a handle, which is installed on the side of the tool holder away from the wheel groove.

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