Pneumatic cutting knife

Abstract

The utility model relates to the technical field of cloth cutting, in particular to a pneumatic cutting knife which comprises an installation handle and a cutting knife body, an air pipe connector is arranged at one end of the installation handle, and a telescopic piece is connected in the installation handle through an air pumping mechanism. The telescopic part comprises a clamping ring, a fixing cylinder is fixedly connected to the inner wall of the clamping ring, a sliding rod is slidably connected to the inner wall of the fixing cylinder in a sealed mode, one end of the sliding rod is elastically connected with the inner wall of the fixing cylinder through a spring, and a sliding block is fixedly connected to the end, away from the fixing cylinder, of the sliding rod. According to the cloth cutting device, the cutter moves rightwards to cut cloth, the manual adjusting valve is arranged, the flow of gas flowing through the adjusting cavity can be adjusted, then the moving distance of the cutter can be adjusted, cloth with different thicknesses can be cut, and the situation that an electric push rod is used for stretching and retracting the cutter back and forth to cut the cloth at present is avoided; the cost required in the using process is increased, and the operation of replacing electric push rods of different models back and forth is tedious.

Description

Technical Field

[0001] The utility model relates to the technical field of cloth cutting, in particular to a pneumatic cutting knife. Background Art

[0002] At present, when cutting cloth, in order to ensure the cutting consistency of the cloth, an electric push rod is used to telescope the cutter back and forth to achieve the cutting of the cloth. However, the stroke of the electric push rod is consistent during use. When it is necessary to cut cloth of different thicknesses, electric push rods with different strokes are required to achieve fast and stable cutting of the cloth, which increases the cost required during use and makes the replacement operation cumbersome. Utility Model Content

[0003] The utility model aims to solve the shortcomings in the prior art and provides a pneumatic cutting knife.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A pneumatic cutting knife comprises a mounting handle and a cutting knife, wherein one end of the mounting handle is provided with an air pipe joint, and a telescopic part is connected to the mounting handle through an air pump mechanism;

[0006] The telescopic part includes a clamping ring, the inner wall of the clamping ring is fixedly connected to a fixed cylinder, the inner wall of the fixed cylinder is sealingly and slidably connected to a sliding rod, one end of the sliding rod is elastically connected to the inner wall of the fixed cylinder through a spring, the end of the sliding rod away from the fixed cylinder is fixedly connected to a sliding block, and the side wall of the sliding block is fixedly connected to the side wall of the cutter through bolts.

[0007] Preferably, the air pumping mechanism includes an air pumping cavity opened in the mounting handle, the inner wall of the fixed cylinder is connected to the right inner wall of the air pumping cavity, the inner wall of the air pumping cavity is sealingly and slidably connected with a sliding plug, the inner wall of the mounting handle is opened with an adjusting cavity, a manual adjusting valve is installed in the adjusting cavity, the left inner wall of the air pumping cavity is connected to the right inner wall of the adjusting cavity, and the left inner wall of the adjusting cavity is connected to the air pipe joint through a connecting pipe.

[0008] Preferably, the end of the mounting handle away from the trachea joint is fixedly connected to a mounting frame, and the lower surface of the slider is in contact with the upper surface of the mounting frame.

[0009] The utility model has the following beneficial effects:

[0010] In the utility model, the cutter moves to the right to cut the cloth, and a manual regulating valve is provided to regulate the gas flow through the regulating chamber, thereby regulating the moving distance of the cutter, so as to cut cloths of different thicknesses, avoiding the current use of an electric push rod to telescope the cutter back and forth to cut the cloth, which leads to increased costs during use and cumbersome operations of replacing electric push rods of different models back and forth. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The utility model is a schematic diagram of the structure of a pneumatic cutting knife.

[0012] In the figure: 1 mounting handle, 2 cutting knife, 3 air pipe joint, 4 pump air cavity, 5 sliding plug, 6 connecting pipe, 7 adjusting cavity, 8 clamping ring, 9 fixing cylinder, 10 sliding rod, 11 mounting frame, 12 sliding block. DETAILED DESCRIPTION

[0013] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0014] Reference Figure 1 A pneumatic cutting knife comprises a mounting handle 1 and a cutting knife 2. An air pipe connector 3 is provided at one end of the mounting handle 1. It should be noted that an external high-pressure air pipe can be plugged into the air pipe connector 3, which is a prior art.

[0015] A telescopic part is connected to the mounting handle 1 through an air pump mechanism, and the telescopic part includes a clamping ring 8, an inner wall of the clamping ring 8 is fixedly connected to a fixed cylinder 9, an inner wall of the fixed cylinder 9 is sealingly and slidably connected to a slide rod 10, one end of the slide rod 10 is elastically connected to the inner wall of the fixed cylinder 9 through a spring, and an end of the slide rod 10 away from the fixed cylinder 9 is fixedly connected to a slider 12, and a side wall of the slider 12 is fixedly connected to the side wall of the cutter 2 through bolts.

[0016] The air pumping mechanism includes an air pumping chamber 4 opened in the mounting handle 1, the inner wall of the fixing tube 9 is connected with the inner wall on the right side of the air pumping chamber 4, the inner wall of the air pumping chamber 4 is sealed and slidably connected with a sliding plug 5, the inner wall of the mounting handle 1 is opened with an adjusting chamber 7, a manual adjusting valve is installed in the adjusting chamber 7, the inner wall on the left side of the air pumping chamber 4 is connected with the inner wall on the right side of the adjusting chamber 7, the inner wall on the left side of the adjusting chamber 7 is connected with the air pipe joint 3 through a connecting pipe 6, and an electromagnetic valve is arranged in the connecting pipe 6, after the cutter 2 moves to the right, the electromagnetic valve is opened to discharge the gas in the mounting handle 1, and then under the action of the spring, the sliding rod 10 will drive the cutter 2 to move to the left and return to its original position, thereby realizing the back and forth movement of the cutter 2.

[0017] Furthermore, when the high-pressure gas from the outside enters the regulating chamber 7 through the connecting pipe 6, it will drive the slide plug 5 to move to the right, and then the slide plug 5 will squeeze the gas on the right side of the pump air chamber 4, so that the gas enters the fixed cylinder 9, and then the slide rod 10 will drive the cutter 2 to move to the right to achieve the cutting of the cloth, and a manual regulating valve is provided to adjust the gas flow through the regulating chamber 7, and then the moving distance of the cutter 2 can be adjusted, so as to cut cloth of different thicknesses, avoiding the current use of an electric push rod to telescope the cutter back and forth to achieve cutting of the cloth, which leads to an increase in the cost required during use, and the operation of replacing electric push rods of different models back and forth is cumbersome.

[0018] One end of the mounting handle 1 away from the air pipe joint 3 is fixedly connected to a mounting frame 11 , and the lower surface of the sliding block 12 is in contact with the upper surface of the mounting frame 11 .

[0019] In the utility model, when the fabric is cut, the external high-pressure air pipe is inserted into the air pipe joint 3, and then the high-pressure gas enters the regulating chamber 7 through the connecting pipe 6, which drives the sliding plug 5 to move rightward, and then the sliding plug 5 squeezes the gas on the right side of the pump air chamber 4, so that the gas enters the fixed cylinder 9, and then the sliding rod 10 drives the cutter 2 to move rightward to achieve the cutting of the fabric. After cutting, the solenoid valve located in the connecting pipe 6 will open to discharge the gas in the mounting handle 1, and then under the action of the spring, the sliding rod 10 will drive the cutter 2 to move leftward back to its original position, so that the cutter 2 can move back and forth;

[0020] A manual regulating valve is provided to adjust the gas flow rate flowing through the regulating chamber 7, and further to adjust the moving distance of the cutter 2, so as to cut fabrics of different thicknesses.

[0021] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A pneumatic cutting knife, characterized in that: It comprises a mounting handle (1) and a cutting knife (2), wherein one end of the mounting handle (1) is provided with an air pipe joint (3), and a telescopic part is connected inside the mounting handle (1) via an air pump mechanism; The telescopic member comprises a clamping ring (8), the inner wall of the clamping ring (8) is fixedly connected to a fixed cylinder (9), the inner wall of the fixed cylinder (9) is sealingly and slidably connected to a sliding rod (10), one end of the sliding rod (10) is elastically connected to the inner wall of the fixed cylinder (9) via a spring, the end of the sliding rod (10) away from the fixed cylinder (9) is fixedly connected to a sliding block (12), and the side wall of the sliding block (12) is fixedly connected to the side wall of the cutter (2) via a bolt.

2. A pneumatic cutting knife according to claim 1, characterized in that: The air pump mechanism comprises an air pump cavity (4) provided in the mounting handle (1), the inner wall of the fixing cylinder (9) being in communication with the right inner wall of the air pump cavity (4), the inner wall of the air pump cavity (4) being sealingly and slidably connected with a sliding plug (5), the inner wall of the mounting handle (1) being provided with an adjusting cavity (7), a manual adjusting valve being installed in the adjusting cavity (7), the left inner wall of the air pump cavity (4) being in communication with the right inner wall of the adjusting cavity (7), and the left inner wall of the adjusting cavity (7) being in communication with the air pipe joint (3) via a connecting pipe (6).

3. A pneumatic cutting knife according to claim 2, characterized in that: One end of the mounting handle (1) away from the air pipe joint (3) is fixedly connected to a mounting frame (11), and the lower surface of the sliding block (12) is in contact with the upper surface of the mounting frame (11).

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