Sequential action flexible adjustable air pressure slitting knife

Abstract

The utility model discloses a sequential action flexible adjustable air pressure slitting knife which comprises a shell, a piston is fixedly connected to the inner surface of the shell, a working rod is fixedly connected to the lower surface of the piston, a cavity is formed in the shell, a switch valve and a stabilizing spring are arranged in the cavity, the switch valve is arranged in the stabilizing spring, and the working rod is fixedly connected to the lower surface of the piston. A through cavity is formed in the shell, a runner pipe is fixedly connected to the side surface of the shell, and a slitting knife is fixedly connected to the lower surface of the connecting rod. By means of the structure, it can be avoided that an operator neglects to close a branch gas circuit in the last use process, so that a second action is executed in advance, a tool rest structure is damaged, and even a product is damaged, when the gas source pushes the connecting rod piece, a long force arm of the connecting rod piece swings, impact force during tool leaning is reduced, and damage to a blade during tool leaning swinging is reduced; and a flexible knife leaning mechanism is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of slitting knives, in particular to a sequential action flexible and adjustable pneumatic slitting knife. Background Art

[0002] The existing technology requires two separate control valves for lowering the knife and leaning the knife, which is complicated to operate. Once the employee is not careful in operation, it will cause the knife to collide and damage the equipment and the cut materials. The newly designed slitting knife adopts the principle of sequential action. After the cutter position is correctly installed, only one control valve is needed to realize the segmented sequence of lowering the knife and leaning the knife. This can avoid the operator's negligence during the last use and not closing the branch air circuit, which causes the second action to be executed prematurely and damage the knife holder structure, or even damage the product; at the same time, the cutters on the market are all leaning directly horizontally. This method has a large leaning force and a large impulse, which has a great impact on the life of the blade. We adopted the principle of a four-bar flexible rocker mechanism to avoid this problem. The long lever arm swing of the rod reduces the impact force when leaning the knife, and reduces the damage to the blade when leaning the knife. Utility Model Content

[0003] The purpose of the present utility model is to solve at least one of the technical problems existing in the prior art, and to provide a sequential action flexible and adjustable pneumatic slitting knife. By arranging a piston, a working rod, a switch valve, and a cavity inside the shell, the air source enters the shell to realize the air path control sequence, which can avoid the operator's negligence in not closing the branch air path during the last use, causing the second action to be executed prematurely and damaging the knife holder structure, or even damaging the product. By arranging a connecting rod, a rotating shaft, a slitting knife, and a baffle, when the air source pushes the connecting rod, the long lever arm of the connecting rod swings, which reduces the impact force when the knife is leaning against the knife, reduces the damage to the blade when the knife is leaning against the knife, and realizes a flexible knife leaning mechanism.

[0004] The utility model also provides the above-mentioned sequential action flexible and adjustable pneumatic slitting knife, comprising: a shell, a piston fixedly connected to the inner surface of the shell, a working rod fixedly connected to the lower surface of the piston, a cavity provided inside the shell, a switch valve and a stabilizing spring provided inside the cavity, the switch valve being inside the stabilizing spring, a through cavity provided inside the shell, a flow pipe fixedly connected to the side surface of the shell, an air inlet provided inside the flow pipe, a connecting cylinder fixedly connected to the lower surface of the shell, a flow groove provided inside the connecting cylinder, a baffle fixedly connected to the lower surface of the shell, a movable shaft fixedly connected to the side surface of the baffle, a connecting rod fixedly connected to the side surface of the movable shaft, and a slitting knife fixedly connected to the lower surface of the connecting rod. Through the above device, it is possible to avoid the operator's negligence in not closing the branch air path during the last use, resulting in the second action being executed prematurely and damaging the knife holder structure or even damaging the product. When the air source pushes the connecting rod, the long lever arm of the connecting rod swings, reducing the impact force when the knife is leaning against the knife, reducing the damage to the blade when the knife is swinging against the knife, and realizing a flexible knife leaning mechanism.

[0005] According to the utility model, a sequential action flexible adjustable pneumatic slitting knife, the upper surface of the air inlet is fixedly connected to a rotating shaft, and the side surface of the rotating shaft is fixedly connected to a cover plate. Through the above device, the air inlet can be closed when the device is not in use.

[0006] According to the sequential action flexible adjustable pneumatic slitting knife described in the present invention, an air inlet is provided inside the shell, and the flow pipe is inside the air inlet. Through the above device, the air source enters the shell from the flow pipe.

[0007] According to the utility model, a sequential action flexible adjustable pneumatic slitting knife, the lower surface of the flow pipe is fixedly connected to a connecting pipe, and a pressure reducing valve is provided on the connecting pipe. Through the above device, the air source is realized from the connecting pipe through the switch valve into another working air path.

[0008] According to the sequential action flexible adjustable pneumatic slitting knife described in the utility model, the cavity is communicated with the internal flow groove of the connecting tube. Through the above device, the air source reaches the flow groove through the cavity to push the connecting rod to swing.

[0009] According to the utility model, a sequential action flexible adjustable pneumatic slitting knife, the lower surface of the shell is fixedly connected to a spring, and the lower surface of the spring is fixedly connected to the connecting rod. Through the above device, the spring pulls up the connecting rod to keep the connecting rod state stable.

[0010] Beneficial effects

[0011] 1. Compared with the existing technology, this sequential action flexible adjustable pneumatic slitting knife has a piston, working rod, switch valve and cavity arranged inside the shell. The air source enters the shell to realize the air path control sequence. It can avoid the operator's negligence in not closing the branch air path during the last use, which causes the second action to be executed prematurely and damage the knife holder structure or even damage the product.

[0012] 2. Compared with the existing technology, this sequential action flexible and adjustable pneumatic slitting knife, by setting a connecting rod, a rotating shaft, a slitting knife, and a baffle, realizes that when the air source pushes the connecting rod, the long lever arm of the connecting rod swings, which reduces the impact force when the knife is leaning against the knife, reduces the damage to the blade when the knife is leaning against the knife, and realizes a flexible knife leaning mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0014] Figure 1 This is the main structure diagram of the utility model's sequential action flexible adjustable pneumatic slitting knife;

[0015] Figure 2 This is a bottom view of the structure of the sequential action flexible adjustable pneumatic slitting knife of the utility model;

[0016] Figure 3 This is a right-side cross-sectional structural diagram of the sequential action flexible adjustable pneumatic slitting knife of the utility model;

[0017] Figure 4 This is a left-side cross-sectional structural diagram of the utility model's sequential action flexible adjustable pneumatic slitting knife;

[0018] Figure 5 This is a schematic diagram of the force transmission direction of the sequentially-action flexible and adjustable pneumatic slitting knife of the utility model;

[0019] Figure 6 This is a schematic diagram of the operation of the sequential action flexible adjustable pneumatic slitting knife of the utility model.

[0020] Legend:

[0021] 1. Shell; 2. Air inlet; 3. Rotating shaft; 4. Cover plate; 5. Circulation pipe; 6. Connecting pipe; 7. Air inlet; 8. Pressure reducing valve; 9. Piston; 10. Working rod; 11. Cavity; 12. Switch valve; 13. Stabilizing spring; 14. Through cavity; 15. Connecting cylinder; 16. Circulation groove; 17. Spring; 18. Movable shaft; 19. Connecting rod; 20. Slitting knife; 21. Baffle. DETAILED DESCRIPTION

[0022] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0023] Reference Figure 1-4 , the utility model embodiment is a sequential action flexible adjustable pneumatic slitting knife, which includes: a shell 1, the inner surface of the shell 1 is fixedly connected to a piston 9, when the air source is introduced, the piston 9 pushes the working rod 10 downward to extend, the lower surface of the piston 9 is fixedly connected to the working rod 10, a cavity 11 is provided inside the shell 1, the air source enters the cavity 11 through the air inlet 7, a switch valve 12 and a stabilizing spring 13 are provided inside the cavity 11, the switch valve 12 is inside the stabilizing spring 13, when the piston 9 pushes the switch valve 12 downward, the air path inside the cavity 11 is opened, and the gas in the cavity 11 enters the through cavity 14 through the switch valve 12, the through cavity 14 is provided inside the shell 1, the gas in the cavity 11 enters the through cavity 14 through the switch valve 12, the side surface of the shell 1 is fixedly connected It is connected to a circulation pipe 5, and the air source circulates in the circulation pipe 5. An air inlet 2 is provided inside the circulation pipe 5. The air source enters the shell 1 from the air inlet 2 and enters the cavity 11. A connecting cylinder 15 is fixedly connected to the lower surface of the shell 1. The connecting cylinder 15 connects the shell 1 and the connecting rod 19. A circulation groove 16 is provided inside the connecting cylinder 15. The circulation groove 16 is communicated with the through cavity 14, so that the gas in the through cavity 14 enters the circulation groove 16 to push the connecting rod 19. A baffle 21 is fixedly connected to the lower surface of the shell 1, and a movable shaft 18 is fixedly connected to the side surface of the baffle 21. The side surface of the movable shaft 18 is fixedly connected to the connecting rod 19. The long lever arm of the connecting rod 19 swings, which reduces the impact force when leaning against the knife and reduces the damage to the blade when leaning against the knife. A slitting knife 20 is fixedly connected to the lower surface of the connecting rod 19.

[0024] The upper surface of the air inlet 2 is fixedly connected to a rotating shaft 3, which enables the cover plate 4 to rotate flexibly. The side surface of the rotating shaft 3 is fixedly connected to the cover plate 4, which allows the device to close the air inlet 2 when not in use. An air inlet hole 7 is provided inside the shell 1, and the air source enters from the air inlet hole 7. The circulation pipe 5 is inside the air inlet hole 7. The lower surface of the circulation pipe 5 is fixedly connected to a connecting pipe 6, which is connected to the air source entering from the air inlet 2. The connecting pipe 6 is provided with a pressure reducing valve 8. The cavity 11 is connected to the internal circulation groove 16 of the connecting cylinder 15. The lower surface of the shell 1 is fixedly connected to a spring 17, which pulls up the connecting rod 19 to keep the connecting rod 19 stable. The lower surface of the spring 17 is fixedly connected to the connecting rod 19.

[0025] The four-bar flexible mechanism reduces the impact force when the blade is close to the knife through the swing of the long lever arm of the rod, and reduces the damage to the blade when the blade is close to the knife. The following relationship can be derived from the lever principle:

[0026] F1L1=F2L2

[0027] As shown in the figure, it is obvious that L1<L2

[0028] Therefore, F2<F1

[0029] The specific multiple relationship can be adjusted according to actual needs.

[0030] Sequential action switch: one gas source is introduced and then divided into two paths. One path acts directly on the piston, pushing the working rod to extend; the other path enters the cavity under the piston through the pressure reducing valve. When the piston moves downward and pushes the gas circuit switch valve stem, the gas circuit in the cavity under the piston is opened, and the gas indicated by the red arrow enters the other working gas circuit from the cavity under the piston through the switch valve, realizing the function of sequential action.

[0031] Working principle: When in use, the gas source is introduced and then divided into two paths. One path directly acts on the piston 9, pushing the working rod 10 to extend, and the other path enters the cavity 11 at the bottom of the piston 9 through the pressure reducing valve 8. When the piston 9 moves downward and pushes the gas path switch valve 12, the gas path of the cavity 11 at the bottom of the piston 9 is opened, and the gas enters another through cavity 14 from the cavity 11 under the piston 9 through the switch valve 12. The through cavity 14 is connected to the flow groove 16. The gas pushes the connecting rod 19, and the long lever arm swings, which reduces the impact force when leaning against the knife, reduces the damage to the blade when leaning against the knife swings, and realizes a flexible knife leaning mechanism.

[0032] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A sequential action flexible adjustable pneumatic slitting knife, characterized in that: include: A housing (1), wherein a piston (9) is fixedly connected to the inner surface of the housing (1), a working rod (10) is fixedly connected to the lower surface of the piston (9), a cavity (11) is provided inside the housing (1), a switch valve (12) and a stabilizing spring (13) are provided inside the cavity (11), the switch valve (12) is inside the stabilizing spring (13), a through cavity (14) is provided inside the housing (1), and a flow pipe (5) is fixedly connected to the side surface of the housing (1), An air inlet (2) is provided inside the circulation pipe (5), a connecting tube (15) is fixedly connected to the lower surface of the shell (1), a circulation groove (16) is provided inside the connecting tube (15), a baffle (21) is fixedly connected to the lower surface of the shell (1), a movable shaft (18) is fixedly connected to the side surface of the baffle (21), a connecting rod (19) is fixedly connected to the side surface of the movable shaft (18), and a slitting knife (20) is fixedly connected to the lower surface of the connecting rod (19).

2. A sequential action flexible adjustable pneumatic slitting knife according to claim 1, characterized in that: The upper surface of the air inlet (2) is fixedly connected to a rotating shaft (3), and the side surface of the rotating shaft (3) is fixedly connected to a cover plate (4).

3. The sequential action flexible adjustable pneumatic slitting knife according to claim 1, characterized in that: An air inlet hole (7) is provided inside the shell (1), and the flow pipe (5) is inside the air inlet hole (7).

4. The sequential action flexible adjustable pneumatic slitting knife according to claim 1, characterized in that: The lower surface of the circulation pipe (5) is fixedly connected to a connecting pipe (6), and a pressure reducing valve (8) is provided on the connecting pipe (6).

5. The sequential action flexible adjustable pneumatic slitting knife according to claim 1, characterized in that: The cavity (11) is in communication with the internal flow groove (16) of the connecting cylinder (15).

6. The sequential action flexible adjustable pneumatic slitting knife according to claim 1, characterized in that: A spring (17) is fixedly connected to the lower surface of the housing (1), and the lower surface of the spring (17) is fixedly connected to a connecting rod (19).

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