A pneumatic scissors for preventing shearing

Abstract

An air-preventing shear pneumatic scissors, comprising scissors, a support plate, a guiding device, a receiving device and a sensing device. The guiding device includes a guiding sleeve, a piston rod and two sliding rods. One end of the piston rod is connected to the support plate, and the two sliding rods are respectively arranged on both sides of the piston rod. One end of each sliding rod passes through the support plate and is connected to a housing arranged above the support plate. The scissors are arranged above the housing, and a sensing device is arranged on the housing near the scissors. The receiving device is a three-ring sleeve which is nested on the outer peripheries of the piston rod and the two sliding rods. The sensing device is installed on the housing, and the receiving device is sleeved on the outer peripheries of the piston rod and the two sliding rods. When the sensing device senses that the scissors are about to perform an air shear, it sends a wireless signal to the receiving device. After the receiving device receives the signal, the three-ring sleeve issues an order to close it, preventing the left and right sliding rods from continuing to advance forward, so that the scissors avoid air shearing, thereby extending the service life of the scissors.

Description

Technical Field

[0001] The present invention belongs to the technical field of pneumatic scissors, and particularly relates to a pneumatic scissors for preventing empty cutting. Background Art

[0002] Scissors are double-edged tools for cutting sheet or linear objects such as cloth, paper, steel plate, rope, round steel, etc. The two edges are staggered and can be opened and closed. Although scissors are not remarkable in appearance, they have a wide range of uses. When tools such as knives and shovels are ineffective, scissors can easily solve the problem. Scissors have become an indispensable tool in people's daily production and life. Pneumatic scissors are also called pneumatic wire cutters. Since the power source is the gas in an air compressor, they are called air scissors. Pneumatic scissors not only save the gripping force exerted by people on the scissors, but also the power generated by compressed air is much greater than human power. Pneumatic scissors can be mainly applied in modern plastic factories, rubber factories, electronics factories, computer manufacturing and assembly factories, telecommunications and telephone manufacturing factories, lighting factories, camera factories, household appliance factories, plastic injection molding factories, automotive carpets and other industries, and are suitable for use in various places such as copper, iron, plastic, leather, straw mats, refrigerant pipes, electric heating pipes, and fiberglass. The advantages of existing pneumatic scissors are as follows: The safety switch and related structures can reduce the danger caused by accidental contact; Boosting and voltage stabilization have obvious improvement for areas with insufficient or unstable air pressure, thereby improving the operation speed; The blade replacement is simple and can be operated on-site, reducing the maintenance waiting time and improving work efficiency, etc. However, the disadvantage is that pneumatic scissors are prone to the phenomenon of empty cutting, which will cause serious wear to the scissor blade tips and greatly reduce the service life of the scissors. Summary of the Invention

[0003] To solve the above deficiencies of the prior art, the purpose of the present invention is to provide a pneumatic scissors for preventing empty cutting, which adopts a guiding device, a receiving device and an induction device to prevent the occurrence of empty cutting and improve the service life of the pneumatic scissors.

[0004] The technical solution of the present invention is: A pneumatic scissors for preventing empty cutting, including scissors, a support plate, a guiding device, a receiving device and an induction device. The guiding device includes a guide sleeve, a piston rod and two sliding rods. One end of the piston rod is connected to the support plate. The two sliding rods are respectively arranged on both sides of the piston rod. One end of the sliding rod passes through the support plate and is connected to the outer shell arranged above the support plate. The scissors are arranged above the outer shell. An induction device is arranged on the outer shell near the scissors. The receiving device is a three-ring sleeve, and the three-ring sleeve is nested on the outer periphery of the piston rod and the two sliding rods.

[0005] Further optimization: The piston rod is connected to the scissors through a scissor shaft.

[0006] Further optimization: A hammering block is arranged above the support plate. A pressing piece is arranged on the hammering block. The sliding rod passes through the support plate, the hammering block, the pressing piece in sequence and is connected to the outer shell.

[0007] For further optimization, the middle ring of the three-ring sleeve is an openable ring. When the receiving device receives a signal, the middle ring opens, thereby squeezing the two side rings to clamp.

[0008] For further optimization, an air inlet is provided at one end of the piston rod away from the scissors.

[0009] For further optimization, the outer shell is a U-shaped shell with an opening downward. Below the sunken position of the outer shell, there is a scissors mounting seat. A plurality of support columns are provided on the scissors mounting seat. The plurality of support columns surround the scissors mounting seat to form a base with an opening upward. The scissors mounting seat and the outer shell form a loop structure, and the scissors are installed on the scissors mounting seat through a clamping device.

[0010] For further optimization, adjacent two support columns are connected and fixed by screws.

[0011] For further optimization, a spring is provided between the outer shell and the scissors mounting seat.

[0012] For further optimization, the clamping device is provided with threaded holes, and the clamping device and the scissors are fixed by screws.

[0013] For further optimization, the sensing device sends the sensed signal of the scissors performing an empty cut to the receiving device. After receiving the signal, the receiving device controls the three-ring sleeve, thereby realizing clamping the sliding rod to prevent its advancement.

[0014] The beneficial effects of the present invention are as follows:

[0015] The receiving device is composed of a detachable three-ring sleeve. The sensing device is a sensor, and the sensing device is installed on the outer shell and close to the scissors. The three-ring sleeve is sleeved on the outer periphery of the piston rod and two sliding rods. When the sensing device senses that the scissors are about to perform an empty cut, it starts to send a wireless signal to the receiving device. After receiving the signal, the receiving device issues an order to the three-ring sleeve to make it close, increasing the resistance of the sliding rod, preventing the left and right sliding rods from continuing to advance forward, avoiding the empty cut of the scissors, and thus prolonging the service life of the scissors. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present invention

[0017] Figure 2 is a three-dimensional structural diagram of the present invention

[0018] Figure 3 is a schematic structural diagram on the support plate

[0019] Figure 4 is a schematic structural diagram of the scissors mounting seat

[0020] Figure 5 is a schematic structural diagram of the outer shell

[0021] Figure 6 Schematic structural diagram of a three-ring sleeve

[0022] Reference numerals: 1. Scissors, 2. Support plate, 3. Guide sleeve, 4. Piston rod, 5. Slide rod, 6. Outer shell, 7. Three-ring sleeve, 8. Hammering block, 9. Pressing piece, 10. Air inlet, 11. Scissors mounting seat, 12. Support column, 13. Clamping device, 14. Spring, 15. Induction device. Specific implementation mode

[0023] The technical solution of the present invention will be further described below with reference to the drawings through specific embodiments.

[0024] In order to make the technical means, creative features, achieved purposes and beneficial effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation modes.

[0025] A pneumatic scissors for air defense scissors, and its specific implementation mode is as follows: It includes scissors 1, support plate 2, guiding device, receiving device and induction device. The guiding device includes guide sleeve 3, piston rod 4 and two slide rods 5. A hammering block 8 is arranged above the support plate 2, and a pressing piece 9 is arranged on the hammering block 8. One end of the piston rod 4 is connected to the support plate 2. The two slide rods 5 are respectively arranged on both sides of the piston rod 4. The slide rods 5 sequentially pass through the support plate 2, the hammering block 8, the pressing piece 9 and are connected to the outer shell 6 arranged above the support plate 2. The scissors 1 are arranged above the outer shell 6. The piston rod 4 is connected to the scissors 1 through a scissors shaft. An air inlet 10 is arranged at one end of the piston rod 4 away from the scissors 1. The induction device is arranged on the outer shell 6 near the scissors 1. The receiving device is a three-ring sleeve 7. The three-ring sleeve 7 is nested on the outer periphery of the piston rod 4 and the two slide rods 5. The middle ring of the three-ring sleeve 7 is an openable ring. When the receiving device receives a signal, the middle ring closes, and the edges bulge to squeeze the two side rings to clamp, and the two side rings further clamp the slide rods 5, so as to increase the resistance of the slide rods 5 and prevent the slide rods 5 from moving forward.

[0026] The outer shell 6 is a U-shaped shell with an opening facing downward. Below the sunken position of the outer shell 6, there is a scissor mounting base 11. A plurality of support columns 12 are provided on the scissor mounting base 11. Adjacent two support columns 12 are connected and fixed by screws. The plurality of support columns 12 enclose the scissor mounting base 11 to form a base with an opening facing upward. A ring buckle structure with a gap is formed between the scissor mounting base 11 and the outer shell 6. A spring 14 is provided between the outer shell 6 and the scissor mounting base 11. When the sliding rod is pushed to the limit position, the piston rod 4 will push the scissors 1 for output with a pressure greater than the elastic force of the spring 14. After the scissors 1 finish cutting, due to the inertia of the elastic force of the spring 14, they will retract to the original position. The scissors 1 are installed on the scissor mounting base 11 through a clamping device 13. Threaded holes are provided on the clamping device 13, and the clamping device 13 and the scissors 1 are fixed by screws.

[0027] In the present invention, the sensing device is a sensor. The sensing device sends the signal that the scissors 1 are about to cut empty to the receiving device. After receiving the signal, the receiving device controls the three-ring sleeve 7, the middle ring closes, and applies pressure to the two side rings. The two side rings squeeze the sliding rod 5 sleeved thereon, so as to clamp the sliding rod 5 and prevent it from advancing.

[0028] The specific working process is as follows: The piston rod 4 pushes the sliding rod 5 to advance. After the scissors 1 move to the limit position where the sliding rod 5 slides, the piston rod 4 then pushes the scissors 1 for output with a pressure exceeding the elastic force of the spring 14. At the same time, when the sensing device senses that the scissors 1 are about to cut empty, it sends this signal to the receiving device. After receiving the signal, the receiving device controls the three-ring sleeve 7, its middle ring closes and pressurizes the two side rings, and the two side rings clamp the sliding rod 5 to prevent the sliding rod from advancing. At this time, the elastic force of the spring 14 is greater than the pressure of the piston rod 4, and the scissors 1 retract, thus avoiding the phenomenon of the scissors 1 cutting empty, reducing the wear of the pneumatic scissors, increasing the service life of the device, and saving production costs.

[0029] The above shows and describes the main features, usage methods, working processes, basic principles, and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have various changes and improvements according to actual situations. These changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A pneumatic scissors for preventing shearing, characterized in that: It includes scissors (1), a support plate (2), a guiding device, a receiving device, and an induction device (15). The guiding device includes a guiding sleeve (3), a piston rod (4), and two sliding rods (5). One end of the piston rod (4) is connected to the support plate (2). The two sliding rods (5) are respectively arranged on both sides of the piston rod (4). One end of the sliding rod (5) passes through the support plate (2) and is connected to a housing (6) arranged above the support plate (2). The scissors (1) are arranged above the housing (6). The induction device (15) is arranged on the housing (6) near the scissors (1). The receiving device is a triple-ring sleeve (7). The triple-ring sleeve (7) is nested on the outer periphery of the piston rod (4) and the two sliding rods (5). The middle ring of the triple-ring sleeve (7) is an openable ring. The induction device (15) sends the empty-cut signal sensed by the scissors (1) to the receiving device. After receiving the signal, the middle ring of the receiving device opens, thereby squeezing the two side rings to clamp, so as to clamp the sliding rod (5) to prevent it from advancing.

2. The pneumatic scissors for preventing shearing according to claim 1, characterized in that: The piston rod (4) is connected to the scissors (1) through a scissors shaft.

3. The pneumatic scissors for preventing shearing as described in claim 1, characterized in that: A hammering block (8) is arranged above the support plate (2). A pressing piece (9) is arranged on the hammering block (8). The sliding rod (5) sequentially passes through the support plate (2), the hammering block (8), the pressing piece (9) and is connected to the housing (6).

4. The pneumatic scissors for preventing shearing as claimed in claim 1, wherein: An air inlet (10) is arranged at one end of the piston rod (4) away from the scissors (1).

5. The pneumatic scissors for preventing shearing as described in claim 1, characterized in that: The housing (6) is a U-shaped housing with an opening downward. A scissors mounting seat (11) is arranged below the concave position of the housing (6). A plurality of support columns (12) are arranged on the scissors mounting seat (11). The plurality of support columns (12) surround the scissors (1) mounting seat to form a base with an opening upward. The scissors mounting seat (11) and the housing (6) form a loop structure. The scissors (1) are mounted on the scissors mounting seat (11) through a clamping device (13).

6. The pneumatic scissors for preventing shearing according to claim 5, characterized in that: Adjacent two support columns (12) are connected and fixed by screws.

7. The pneumatic scissors for preventing shearing as claimed in claim 5, wherein: A spring (14) is arranged between the housing (6) and the scissors (1) mounting seat.

8. The pneumatic scissors for preventing shearing as claimed in claim 5, characterized in that: The clamping device (13) is provided with a threaded hole, and the clamping device (13) and the scissors (1) are fixed by screws.

Images