Tension adjusting equipment based on polyethylene film stretching processing

Abstract

The utility model relates to the technical field of film processing, and discloses tension adjusting equipment based on polyethylene film stretching processing, which comprises a stretching processing box body, and a feed port and a discharge port which are symmetrically formed in the middle parts of the left and right side wall surfaces of the stretching processing box body in a penetrating manner, and a stretching mechanism is arranged in the stretching processing box body; the stretching mechanism comprises two mounting plates arranged on the left side and the right side of an inner cavity of the stretching machining box and two sets of tension rollers rotationally mounted on the two mounting plates, and a pressure piston cylinder is fixedly mounted in the middle of the rear wall face of the inner cavity of the stretching machining box. Two tension piston cylinders communicating with the tops of inner cavities of the pressure piston cylinders are fixedly installed at the upper left corner and the lower right corner of the rear wall face of the inner cavity of the stretching machining box, and adjusting mechanisms for driving the two tension rollers to move up and down are arranged in the two tension piston cylinders. By arranging the stretching mechanism, the adjusting mechanism and the tension mechanism, the film stretching quality of the equipment is improved, and the practicability of the equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of film processing, in particular to tension regulating equipment based on polyethylene film stretching processing. Background Art

[0002] After searching, application number 202322640957.X discloses a stretching device for film processing, including a stretching box, a pressure cylinder is fixedly connected to the middle top of the inner side of the stretching box, and the interior of the stretching box is provided with an upper stretching mechanism and a lower stretching mechanism located on both sides of the pressure cylinder. The upper stretching mechanism and the lower stretching mechanism both pass through the film, and the inner side of the pressure cylinder is provided with a gas compression component for pressing gas into the upper stretching mechanism and the lower stretching mechanism.

[0003] During use, a film processing stretching device in this patent application uses the gas inside the pressure cylinder to be pressed into the interior of the lower sealing sleeve and the upper sealing sleeve through the first hose and the second hose at the same time, driving the lower sliding rod and the upper sliding rod at one end of the lower sealing sleeve and the upper sealing sleeve to drive the lower guide roller and the upper guide roller to move synchronously in opposite directions to stretch the film in opposite directions at the same time, so that the film stretching is more uniform and the stretching quality is improved. However, during such use, since the tension of the film itself will change during the movement, the staff frequently adjusts the position of the lower guide roller and the upper guide roller to ensure a stable stretching effect on the film. The operation is relatively cumbersome, which reduces the practicality of the equipment. For this reason, we propose a tension adjustment device based on polyethylene film stretching processing. Utility Model Content

[0004] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a tension regulating device based on polyethylene film stretching processing.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme, which is a tension adjustment device based on the stretching processing of polyethylene film, including a stretching processing box, a feed port and a discharge port symmetrically opened in the middle of the left and right side walls of the stretching processing box, a stretching mechanism is arranged inside the stretching processing box, and the stretching mechanism includes two mounting plates arranged on the left and right sides of the inner cavity of the stretching processing box and two groups of tension rollers rotatably mounted on the two mounting plates, a pressure piston cylinder is fixedly installed in the middle of the rear wall of the inner cavity of the stretching processing box, and two tension rollers connected to the inner cavity of the pressure piston cylinder are fixedly installed at the upper left corner and the lower right corner of the rear wall of the inner cavity of the stretching processing box. Two tension piston cylinders are connected at the top, and a pressure piston with adjustable height is movably provided inside the pressure piston cylinder. An adjustment mechanism is provided inside the two tension piston cylinders to drive the two sets of tension rollers to move up and down. The adjustment mechanism includes two tension pistons movably provided inside the two tension piston cylinders and two tension movable rods fixedly connected to the sides of the two tension pistons close to each other. A tension mechanism is provided between the ends of the two tension movable rods close to each other and the two mounting plates. The tension mechanism includes two tension slide grooves opened on the wall surface of the ends of the two tension movable rods close to each other and two tension slide rods slidably connected to the inside of the two tension slide grooves.

[0006] Furthermore, a sealed door is provided at the front end of the stretching processing box.

[0007] Furthermore, guide rollers are symmetrically mounted inside the feed port and the discharge port.

[0008] Furthermore, two connecting air pipes are provided between the top end of the side wall of the pressure piston cylinder and the sides of the two tension piston cylinders that are away from each other.

[0009] Furthermore, an adjusting cylinder is fixedly installed on the bottom of the rear wall of the stretching processing box.

[0010] Furthermore, the telescopic end on the top side of the regulating cylinder extends to the bottom end of the inner portion of the pressure piston cylinder and is fixedly mounted to the middle portion of the bottom wall surface of the pressure piston.

[0011] Furthermore, the ends of the two tension movable rods that are close to each other respectively penetrate the corresponding positions of the inner cavity walls of the two tension piston cylinders and extend to the outside.

[0012] Furthermore, two tension springs are fixedly installed between ends of the two tension slide bars that are away from each other and the inner wall surfaces of the two tension slide grooves.

[0013] Furthermore, each group of the tension rollers includes two.

[0014] Furthermore, the rear end of each tension roller is rotatably connected to a driving gear.

[0015] Furthermore, a driven gear is meshed on the outer side of each driving gear and is rotatably connected to the rear wall surface of the mounting plate.

[0016] Furthermore, every two adjacent driven gears are meshed with each other.

[0017] The utility model provides a tension adjustment device based on polyethylene film stretching processing. It has the following

[0018] Beneficial effects:

[0019] 1. The tension adjustment device for polyethylene film stretching is provided with a stretching mechanism, an adjustment mechanism and a tension mechanism. When in use, one end of the film to be processed passes between two guide rollers inside the feed port and enters the inner cavity of the stretching processing box. The film is then sequentially passed between a group of tension rollers on the mounting plate at the left position, between a group of tension rollers on the mounting plate at the right position, and between two guide rollers inside the discharge port before being pulled out. The telescopic end of the control adjustment cylinder drives the pressure piston to move upward along the inner cavity of the pressure piston cylinder, forcing the air inside the pressure piston cylinder to enter the two tension piston cylinders through two connecting air pipes, thereby pushing the two tension pistons to move closer to each other. The two tension pistons respectively drive the tension rollers on the two mounting plates to move closer to each other through two tension movable rods and two tension slide rods, thereby simultaneously stretching the film in opposite directions. Since the two tension slide rods drive the tension rollers on the two mounting plates under the action of the elastic force of the two tension springs to form a stable stretching effect on the film, the film stretching process of the device will not be affected by the tension change of the film itself. The above operation is simple and practical, the structure is reasonable and compact, and the film stretching quality of the device is improved, thereby improving the practicality of the device.

[0020] 2. The tension adjustment device based on polyethylene film stretching processing sets a driving gear and a driven gear. The rear ends of the two tension rollers on each mounting plate are meshed through the two driving gears and the two driven gears, so that the two tension rollers can always maintain synchronous reverse rotation, thereby better conveying the film and further improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The structures, proportions, sizes, etc. depicted in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which the utility model can be implemented, and therefore have no substantive technical significance.

[0022] Figure 1 This is a schematic structural diagram of the tension adjustment device based on polyethylene film stretching processing of the present utility model;

[0023] Figure 2This is a cross-sectional view of the tension adjustment device based on polyethylene film stretching processing of the present utility model;

[0024] Figure 3 for Figure 2 A is an enlarged schematic diagram;

[0025] Figure 4 This is a schematic structural diagram of the driving gear and driven gear of the utility model.

[0026] Legend:

[0027] 10. Stretching processing box; 11. Sealing box door; 12. Feed inlet; 13. Discharge outlet; 14. Guide roller; 15. Mounting plate; 16. Tension roller; 17. Tension piston cylinder; 18. Tension movable rod; 19. Tension piston; 20. Tension slide; 21. Tension slide rod; 22. Tension spring; 23. Pressure piston cylinder; 24. Connecting air pipe; 25. Adjusting cylinder; 26. Pressure piston; 27. Driving gear; 28. Driven gear. DETAILED DESCRIPTION

[0028] Tension adjustment equipment based on polyethylene film stretching processing, such as Figure 1-4As shown, it includes a stretching processing box 10, a feed port 12 and a discharge port 13 symmetrically opened in the middle of the left and right walls of the stretching processing box 10, a sealed box door 11 is provided at the front end of the stretching processing box 10, and guide rollers 14 are symmetrically installed in the feed port 12 and the discharge port 13. A stretching mechanism is provided inside the stretching processing box 10, and the stretching mechanism includes two mounting plates 15 arranged on the left and right sides of the inner cavity of the stretching processing box 10 and two sets of tension rollers 16 rotatably installed on the two mounting plates 15. The middle of the rear wall of the inner cavity of the stretching processing box 10 is fixedly installed. A pressure piston cylinder 23 is equipped, and two tension piston cylinders 17 connected to the top of the inner cavity of the pressure piston cylinder 23 are fixedly installed at the upper left corner and the lower right corner of the rear wall of the inner cavity of the stretching processing box 10. Two connecting air pipes 24 are connected between the top of the side wall of the pressure piston cylinder 23 and the side away from each other of the two tension piston cylinders 17. A pressure piston 26 with adjustable height is movably provided inside the pressure piston cylinder 23. An adjusting cylinder 25 is fixedly installed at the bottom of the rear wall of the stretching processing box 10. The telescopic end of the top side of the adjusting cylinder 25 extends to the bottom end of the inner cavity of the pressure piston cylinder 23 and is connected to the pressure piston cylinder 23. The tension piston 26 is fixedly installed in the middle of the bottom wall surface, and an adjustment mechanism is provided inside the two tension piston cylinders 17 to drive the two sets of tension rollers 16 to move up and down. The adjustment mechanism includes two tension pistons 19 movably arranged inside the two tension piston cylinders 17 and two tension movable rods 18 fixedly connected to the side close to each other of the two tension pistons 19. The ends of the two tension movable rods 18 close to each other respectively pass through the corresponding positions of the inner cavity wall surfaces of the two tension piston cylinders 17 and extend to the outside. A tension mechanism is provided between the ends of the two tension movable rods 18 close to each other and the two mounting plates 15. The tension mechanism It includes two tension slots 20 opened on the wall surface of one end of the two tension movable rods 18 close to each other and two tension slides 21 slidably connected to the inside of the two tension slots 20. Two tension springs 22 are fixedly installed between the ends of the two tension slides 21 away from each other and the inner wall surfaces of the two tension slots 20. Each group of tension rollers 16 includes two, and the rear end of each tension roller 16 is rotatably connected to a driving gear 27. The outer side of each driving gear 27 is meshed with a driven gear 28 rotatably connected to the rear wall surface of the mounting plate 15, and each adjacent two driven gears 28 are meshed.

[0029] The working principle of the present utility model is as follows: when in use, one end of the film to be processed passes through the position between the two guide rollers 14 inside the feed port 12 and enters the inner cavity of the stretching processing box 10, and then passes through the position between a group of tension rollers 16 on the mounting plate 15 at the left position, the position between a group of tension rollers 16 on the mounting plate 15 at the right position, and the position between the two guide rollers 14 inside the discharge port 13 and is pulled out. The telescopic end of the control-regulating cylinder 25 drives the pressure piston 26 to move upward along the inner cavity of the pressure piston cylinder 23, forcing the air inside the pressure piston cylinder 23 to enter the two tension piston cylinders 17 through the two connecting air pipes 24, and respectively push the two tension pistons 19 to move closer to each other. The two tension pistons 19 are respectively moved by two tension movable rods 18 and two tension slide rods. 21 drives the tension rollers 16 on the two mounting plates 15 to move closer to each other and perform stretching operations in opposite directions on the film at the same time. Since the two tension slide bars 21 drive the tension rollers 16 on the two mounting plates 15 under the action of the elastic force of the two tension springs 22 to form a stable stretching effect on the film, the stretching process of the film by the device will not be affected by the tension changes of the film itself. The above operation is simple and practical, the structure is reasonable and compact, which improves the stretching quality of the film by the device and improves the practicality of the device; the rear ends of the two tension rollers 16 on each mounting plate 15 are engaged through two driving gears 27 and two driven gears 28, so that the two tension rollers 16 can always maintain synchronous reverse rotation, thereby better conveying the film, further improving the practicality of the device.

[0030] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements shall fall within the scope of the present invention as claimed.

Claims

1. A tension regulating device for polyethylene film stretching, comprising a stretching box (10), a feed port (12) and a discharge port (13) symmetrically extending through the middle of the left and right side walls of the stretching box (10), characterized in that: The stretching processing box (10) is provided with a stretching mechanism inside, and the stretching mechanism includes two mounting plates (15) arranged at the left and right sides of the inner cavity of the stretching processing box (10) and two sets of tension rollers (16) rotatably mounted on the two mounting plates (15). A pressure piston cylinder (23) is fixedly mounted in the middle of the rear wall of the inner cavity of the stretching processing box (10). Two tension piston cylinders (17) connected to the top of the inner cavity of the pressure piston cylinder (23) are fixedly mounted at the upper left corner and the lower right corner of the rear wall of the inner cavity of the stretching processing box (10). A pressure piston (26) that can be adjusted in height is movably arranged inside the pressure piston cylinder (23). The two tension rollers (16) are fixedly mounted at the upper left corner and the lower right corner of the inner cavity of the stretching processing box (10). An adjusting mechanism for driving two sets of tension rollers (16) to move up and down is provided inside the tension piston cylinder (17), and the adjusting mechanism includes two tension pistons (19) movably provided inside the two tension piston cylinders (17) and two tension movable rods (18) fixedly connected to the sides of the two tension pistons (19) close to each other. A tension mechanism is provided between the ends of the two tension movable rods (18) close to each other and the two mounting plates (15), and the tension mechanism includes two tension slide grooves (20) provided on the wall surface of the ends of the two tension movable rods (18) close to each other and two tension slide rods (21) slidably connected to the inside of the two tension slide grooves (20).

2. The tension adjustment device based on polyethylene film stretching processing according to claim 1, characterized in that: The front end of the stretching processing box (10) is provided with a sealed box door (11), and guide rollers (14) are symmetrically installed inside the feed port (12) and the discharge port (13).

3. The tension adjustment device based on polyethylene film stretching processing according to claim 1, characterized in that: Two connecting air pipes (24) are provided between the top end of the side wall of the pressure piston cylinder (23) and the mutually distant sides of the two tension piston cylinders (17).

4. The tension adjustment device based on polyethylene film stretching processing according to claim 1, characterized in that: An adjusting cylinder (25) is fixedly installed at the bottom of the rear wall of the stretching processing box (10), and the telescopic end of the top side of the adjusting cylinder (25) extends to the bottom end inside the pressure piston cylinder (23) and is fixedly installed with the middle of the bottom wall of the pressure piston (26).

5. The tension adjustment device based on polyethylene film stretching processing according to claim 1, characterized in that: One end of the two tension movable rods (18) close to each other passes through the corresponding positions of the inner cavity walls of the two tension piston cylinders (17) and extends to the outside.

6. The tension adjustment device based on polyethylene film stretching processing according to claim 1, characterized in that: Two tension springs (22) are fixedly installed between the ends of the two tension slide bars (21) that are away from each other and the inner wall surfaces of the two tension slide grooves (20).

7. The tension adjustment device based on polyethylene film stretching processing according to claim 1, characterized in that: Each group of tension rollers (16) includes two, the rear end of each tension roller (16) is rotatably connected to a driving gear (27), the outer side of each driving gear (27) is meshed with a driven gear (28) rotatably connected to the rear wall surface of the mounting plate (15), and each adjacent two driven gears (28) are meshed with each other.

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