Rubber sheet cutting device

Abstract

The utility model discloses rubber board cutting device, including the fixed frame, drive assembly, including fixed setting in the cylinder of fixed frame inner wall top, the movable setting of cylinder bottom pusher, the air inlet pipe of intercommunication setting in the cylinder lateral wall and close to the position of top portion and the air outlet pipe of intercommunication setting in the cylinder another side lateral wall and close to the position of top portion, the utility model discloses the intercommunication structure of air outlet pipe and pressing plate in drive assembly, in reset stage, high pressure gas is guided to the inside of pressing plate, and is directly sprayed to cutting knife through the air hole of lateral wall, utilizes the existing gas circuit, has realized the forced air cooling of cutting knife, has carried away the heat of friction fast, prevents rubber melting and sticking knife and cutting tool overheating damage, prolongs cutting tool service life, guarantees the quality stability of continuous cutting.

Description

Technical Field

[0001] This utility model belongs to the field of rubber sheet technology, and in particular relates to a rubber sheet cutting device. Background Technology

[0002] In industrial production, rubber sheets, as a material with good elasticity, wear resistance, and sealing properties, are widely used in various fields such as machinery manufacturing, construction, and automobiles. Depending on the application scenario, rubber sheets often need to be cut into specific sizes and shapes, making the cutting process a crucial step in rubber sheet processing.

[0003] During the cutting process of rubber sheet, the friction between the cutting blade and the rubber sheet will generate a lot of heat. If the heat cannot be dissipated in time, it will cause the cutting blade temperature to rise, resulting in a sharp increase in the temperature of the area where the blade and rubber are in contact. Excessive temperature will not only accelerate blade wear, but may also cause local melting, carbonization or blade sticking of the rubber, which will seriously affect the quality of the cut surface and subsequent processing. Utility Model Content

[0004] This utility model addresses the problems in the prior art by proposing the following technical solution: This utility model provides a rubber sheet cutting device, including: Fixture; The drive assembly includes a cylinder fixedly disposed on the top of the inner wall of the fixed frame, a pusher movably disposed on the bottom of the cylinder, an air inlet pipe connected to the side wall of the cylinder and near the top position, and an air outlet pipe connected to the other side wall of the cylinder and near the top position. Solenoid valves are installed on both the air inlet pipe and the air outlet pipe. The cutting assembly includes a mounting plate disposed at the bottom of the pusher, a cutting blade fixedly disposed at the bottom of the mounting plate, elastic members movably disposed on the mounting plate and located on both sides of the cutting blade, and a pressing plate fixedly disposed at the bottom of the elastic members. The pressing plate is connected to the air outlet pipe. The pressing plate has a through groove for the cutting blade to move, and the side wall of the pressing plate has an air outlet facing the through groove.

[0005] As an improvement to the above technical solution, the elastic element includes a movable rod that is movably inserted into the mounting plate and a spring wound around the movable rod.

[0006] As an improvement to the above technical solution, the pushing member includes a piston rod that is movably inserted into the bottom of the cylinder and a piston that is fixedly disposed on the top of the piston rod, and a spring is wound around the surface of the piston rod and a section located inside the cylinder.

[0007] As an improvement to the above technical solution, the bottom of the fixing frame, directly below the cutting blade, is provided with a slot that is compatible with the cutting blade.

[0008] As an improvement to the above technical solution, a conveyor line is installed at the bottom of the fixed frame and on both sides of the empty groove.

[0009] The beneficial effects of this utility model are: Through the action logic of pressing before cutting, the initial position of the pressing plate is lower than the cutting blade, so it can contact the surface of the rubber plate first. As the pushing part continues to descend, the elastic part is compressed, and the elastic force of the second spring makes the pressing plate press the rubber plate tightly, effectively preventing the rubber plate from shifting during cutting and ensuring the accuracy of the cutting position. By connecting the air outlet pipe and the pressing plate in the drive assembly, high-pressure gas is guided into the pressing plate during the reset phase and sprayed directly onto the cutting blade through the air outlet holes on the side wall. By utilizing the existing air path, forced air cooling of the cutting blade is achieved, which quickly removes the heat generated by friction, prevents rubber from melting and sticking to the blade and prevents the blade from overheating and being damaged, extends the service life of the blade, and ensures the quality stability of continuous cutting. Attached Figure Description

[0010] Figure 1 This is a front view of the overall structure of this utility model; Figure 2 This is a top view of the mounting plate of this utility model; Figure 3 This is a bottom view of the fixing frame of this utility model.

[0011] Reference numerals: 10, fixed frame; 101, empty slot; 11, conveyor line; 20, cylinder body; 21, air inlet pipe; 22, piston; 23, piston rod; 24, spring one; 25, air outlet pipe; 30, mounting plate; 31, cutting blade; 32, movable rod; 33, spring two; 34, pressing plate; 341, air outlet; 35, through slot. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0013] A rubber sheet cutting device includes: Fixture 10; The drive assembly includes a cylinder 20 fixedly disposed on the top of the inner wall of the fixed frame 10, a pusher movably disposed on the bottom of the cylinder 20, an air inlet pipe 21 connected to the side wall of the cylinder 20 and near the top, and an air outlet pipe 25 connected to the other side wall of the cylinder 20 and near the top. Solenoid valves are installed on both the air inlet pipe 21 and the air outlet pipe 25. The cutting assembly includes a mounting plate 30 disposed at the bottom of the pusher, a cutting blade 31 fixedly disposed at the bottom of the mounting plate 30, elastic members movably disposed on the mounting plate 30 and located on both sides of the cutting blade 31, and a pressing plate 34 fixedly disposed at the bottom of the elastic members. The pressing plate 34 is connected to the air outlet pipe 25. The pressing plate 34 has a through groove 35 for the cutting blade 31 to move, and the side wall of the pressing plate 34 has an air outlet 341 facing the through groove 35.

[0014] Specifically, in the initial state, there is no high-pressure gas input in the cylinder 20 of the drive assembly, the pusher is in a retracted state, driving the entire cutting assembly to a high position. At this time, the pressing plate 34 is not in contact with the rubber plate, the cutting blade 31 is in a raised state, and the elastic element is not compressed, ready for cutting. The rubber plate to be cut is placed below the cutting blade 31, ensuring that the cutting position is aligned with the through slot 35 of the cutting blade 31 and the pressing plate 34. During the pressing and positioning stage, the solenoid valve on the air intake pipe 21 is opened, and high-pressure gas enters the top of the cylinder 20 through the air intake pipe 21, pushing the internal pusher to move downward, thereby driving the mounting plate 30 and the cutting blade 31, elastic element and pressing plate 34 below to descend synchronously. Since the pressing plate 34 is located on both sides of the cutting blade 31 and its initial position is lower than the cutting blade, the pressing plate 34 will first contact the surface of the rubber plate. As the pusher continues to descend, the elastic element is compressed, and the pressing plate 34 is tightly pressed under the action of elastic force. Pressing down the rubber plate secures it, preventing displacement during cutting. The pushing component continues to descend, and the compressed elastic component stops contracting. The cutting blade 31 passes through the through groove 35 of the pressing plate 34, contacts and cuts the rubber plate, completing the cutting action. After cutting, the solenoid valve of the air inlet pipe 21 closes, and the solenoid valve of the air outlet pipe 25 opens. The gas in the cylinder 20 is discharged through the air outlet pipe 25. The pushing component contracts upward in the cylinder 20, causing the entire cutting assembly to rise. The pressing plate 34 first detaches from the rubber plate, the elastic component returns to its original state, and the cutting blade 31 is lifted from the through groove 35. The device returns to its initial state, waiting for the next cut. At the same time, high-pressure gas enters the interior of the pressing plate 34 through the air outlet pipe 25 and is ejected from its side wall toward the air outlet 341 of the through groove 35. The ejected gas acts on the cutting blade 31, enhancing convection on the surface of the cutting blade and quickly removing the heat generated during cutting (rubber friction easily generates heat during cutting).

[0015] In one embodiment, the elastic element includes a movable rod 32 movably inserted into the mounting plate 30 and a second spring 33 wound around the movable rod 32. When the pushing member drives the mounting plate 30 to descend, the movable rod 32 moves down synchronously with the mounting plate 30. The pressing plate 34 first contacts the surface of the rubber plate and then stops descending. At this time, the mounting plate 30 continues to descend due to the continuous pressure from the pushing member, and the movable rod 32 slides upward relative to the mounting plate 30, and the second spring 33 is compressed.

[0016] In one embodiment, the pushing component includes a piston rod 23 movably inserted into the bottom of the cylinder 20 and a piston 22 fixedly disposed on the top of the piston rod 23. A spring 24 is wound around the surface of the piston rod 23 and a section inside the cylinder 20. The piston 22 is sealed to the inner wall of the cylinder 20 and can slide up and down along the axial direction of the cylinder 20, dividing the internal space of the cylinder 20 into upper and lower chambers. The upper chamber is connected to the outside through an air inlet pipe 21 and an air outlet pipe 25. The bottom chamber is the movable chamber of the piston rod 23. The lower end of the piston rod 23 extends out of the bottom of the cylinder 20 and is connected to the mounting plate 30, while the upper end is fixed to the piston 22, used to transmit the axial force of the piston 22 to the cutting assembly. When there is no high-pressure gas input at the top of the cylinder 20, the spring 24 is in its natural state, and its elastic force pushes the piston 22 upward, so that the piston 22 is located at the top position of the cylinder 20, and the piston rod 23 retracts to its shortest length. With the cutting assembly in a high position, the elastic force of spring 24 balances the weight of piston 22, piston rod 23, and the cutting assembly. When the solenoid valve of the intake pipe 21 opens, high-pressure gas enters the top air chamber of cylinder 20. The gas pressure acts on the top of piston 22, overcoming the elastic force of spring 24 and the weight of the cutting assembly, pushing piston 22 downward. Piston rod 23 extends out of cylinder 20 synchronously with piston 22, causing mounting plate 30 and the cutting assembly to descend. Spring 24 is compressed by piston 22, storing elastic potential energy to provide power for subsequent reset. The gas pressure continues to act until the cutting action is completed. After cutting, intake pipe 21 closes and exhaust pipe 25 opens, the gas pressure in the top air chamber of cylinder 20 disappears, spring 24 releases elastic potential energy, and pushes piston 22 upward to reset. Piston rod 23 retracts with piston 22, causing the cutting assembly to rise to its initial position, and spring 24 returns to its natural state.

[0017] In one embodiment, the bottom of the fixing frame 10, directly below the cutting blade 31, is provided with a slot 101 that is adapted to the cutting blade 31. When the cutting blade 31 passes through the rubber plate to complete the cutting, the blade will naturally enter the slot 101, avoiding direct contact between the cutting blade 31 and the workbench surface, preventing the blade from being worn or cracked due to collision with the workbench, and at the same time preventing the bottom of the rubber plate from being deformed due to the pressure of the workbench surface, ensuring that the cutting edge is flat.

[0018] In one embodiment, a conveyor line 11 is installed at the bottom of the fixed frame 10 and on both sides of the empty groove 101. The rubber sheet to be cut is conveyed from one side of the device to the cutting station through the conveyor line 11. When the rubber sheet reaches the preset cutting position, the conveyor line stops. After the cutting is completed, the pressing plate 34 and the cutting blade 31 rise and reset, the conveyor line 11 restarts, and the cut rubber sheet is conveyed to the other side of the device to complete the automatic unloading.

[0019] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A rubber sheet cutting device, characterized in that, include: Fixture (10); The drive assembly includes a cylinder (20) fixedly disposed on the top of the inner wall of the fixed frame (10), a pusher movably disposed on the bottom of the cylinder (20), an air inlet pipe (21) connected to the side wall of the cylinder (20) and near the top, and an air outlet pipe (25) connected to the other side wall of the cylinder (20) and near the top. Solenoid valves are installed on both the air inlet pipe (21) and the air outlet pipe (25). The cutting assembly includes a mounting plate (30) disposed at the bottom of the pusher, a cutting blade (31) fixedly disposed at the bottom of the mounting plate (30), elastic members movably disposed on the mounting plate (30) and located on both sides of the cutting blade (31), and a pressing plate (34) fixedly disposed at the bottom of the elastic members. The pressing plate (34) is connected to the air outlet pipe (25). The pressing plate (34) has a through groove (35) for the cutting blade (31) to move, and the side wall of the pressing plate (34) has an air outlet (341) facing the through groove (35).

2. The rubber sheet cutting device according to claim 1, characterized in that, The elastic element includes a movable rod (32) movably inserted into the mounting plate (30) and a spring (33) wound around the movable rod (32).

3. The rubber sheet cutting device according to claim 2, characterized in that, The pusher includes a piston rod (23) movably inserted into the bottom of the cylinder (20) and a piston (22) fixedly disposed on the top of the piston rod (23). A spring (24) is wound around the surface of the piston rod (23) and a section inside the cylinder (20).

4. The rubber sheet cutting device according to claim 1, characterized in that, The bottom of the fixing frame (10) and directly below the cutting blade (31) is provided with a slot (101) that is adapted to the cutting blade (31).

5. The rubber sheet cutting device according to claim 4, characterized in that, The bottom of the fixed frame (10) and on both sides of the empty groove (101) are equipped with conveyor lines (11).

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