Longitudinal stretching device for thermal shrinkage film

Abstract

The utility model discloses a longitudinal stretching device for a heat shrink film, which is characterized in that a sliding chute is formed in a bottom plate, two symmetrically arranged sliding blocks are connected in the sliding chute in a sliding manner, a double-output-shaft motor is mounted at the bottom of the bottom plate, screw rods are fixedly connected to output shafts of the double-output-shaft motor, first driving motors are fixedly mounted at the tops of the two sliding blocks, and the first driving motors are connected with the two sliding blocks in a sliding manner; a mounting plate is fixedly connected to the output end of the first driving motor, and a plurality of evenly-distributed stretching assemblies are arranged on the mounting plate. According to the longitudinal stretching device for the thermal shrinkage film, the thermal shrinkage film can be preheated through the arranged heating assembly, the distance between the mounting plates can be adjusted according to the width of the thermal shrinkage film through the arranged double-output-shaft motor, the arranged lead screw and the arranged sliding block, and the distance between the mounting plates can be adjusted through the arranged first driving motor; the angle between the two mounting plates can be changed, the stretching width is adjusted according to the expansion and contraction rate of the thermal shrinkage film, and the device is simple in structure and convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of heat shrink film processing, in particular to a longitudinal stretching device for heat shrink film. Background Art

[0002] Heat-shrink film refers to a plastic film that has a certain shrinkage capacity when heated at a predetermined temperature. Existing heat-shrink film production primarily involves longitudinal or transverse stretching. After being extruded through a film blowing machine, the film is again stretched to the desired shrinkage ratio by a preheating mechanism and a stretching mechanism. However, existing longitudinal stretching devices for heat-shrink film cannot adjust the stretching mechanism width and stretching width based on the film's width and shrinkage ratio, making them inconvenient to use. Utility Model Content

[0003] In response to the above-mentioned deficiencies in the prior art, the present utility model provides a longitudinal stretching device for heat shrinkable film, which aims to solve the problems that the existing longitudinal stretching device for heat shrinkable film cannot adjust the width and stretching width of the stretching mechanism according to the width and shrinkage rate of the heat shrinkable film, and is inconvenient to use.

[0004] In order to achieve the above-mentioned utility model purpose, the technical solution adopted by the utility model is:

[0005] A longitudinal stretching device for heat shrinkable film, comprising a base plate, a box body provided on one side of the top of the base plate, a heating component provided in the box body, a slide groove provided on the base plate, two symmetrically arranged sliders slidably connected in the slide groove, a dual-output shaft motor installed at the bottom of the base plate, a screw rod fixedly connected to the output shaft of the dual-output shaft motor, the two screw rods are respectively threadedly connected to the two sliders, a first drive motor is fixedly installed on the top of the two sliders, a mounting plate is fixedly connected to the output of the first drive motor, and a plurality of evenly distributed stretching components are provided on the mounting plate.

[0006] Furthermore, the heating assembly includes an upper heating plate arranged in the box body and a lower heating plate arranged symmetrically with the upper heating plate, a first electric push rod is provided between the upper heating plate and the top inner side of the box body, and a second electric push rod is provided between the lower heating plate and the bottom inner side of the box body.

[0007] Furthermore, the stretching assembly includes a motor base fixedly mounted on the mounting plate, a second drive motor is mounted on the motor base, a first rotating shaft is fixedly connected to the output shaft of the second drive motor, a first extrusion roller is fixedly connected to the first rotating shaft, an end of the first rotating shaft away from the first extrusion roller is fixedly connected to a first gear, a second rotating shaft is rotatably connected to the mounting plate, a second rotating shaft is fixedly connected to a second gear, the first gear and the second gear are meshed with each other, a second extrusion roller is fixedly connected to the end of the second rotating shaft away from the second gear, and the first extrusion roller and the second extrusion roller are arranged in conflict with each other.

[0008] Furthermore, the bottom of the base plate is provided with supporting legs.

[0009] Furthermore, the threads of the two screw rods have opposite rotation directions.

[0010] Furthermore, the first squeezing roller and the second squeezing roller are both made of rubber.

[0011] The beneficial effects of the utility model are:

[0012] The utility model provides a longitudinal stretching device for heat shrinkable film. The heat shrinkable film can be preheated by a heating component. The distance between the mounting plates can be adjusted according to the width of the heat shrinkable film by a dual-output shaft motor, a lead screw and a slider. The angle between the two mounting plates can be changed by a first driving motor. The stretching width can be adjusted according to the expansion and contraction rate of the heat shrinkable film. The device has a simple structure and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 3 For the utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0016] Reference table of accompanying symbols:

[0017] 1. Bottom plate; 2. Box body; 3. Slide; 4. Slider; 5. Dual-output shaft motor; 6. Screw; 7. First drive motor; 8. Mounting plate; 9. Upper heating plate; 10. Lower heating plate; 11. First electric push rod; 12. Second electric push rod; 13. Motor base; 14. Second drive motor; 15. First rotating shaft; 16. First extrusion roller; 17. First gear; 18. Second rotating shaft; 19. Second gear; 20. Second extrusion roller; 21. Support leg. DETAILED DESCRIPTION

[0018] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings, wherein the same components are represented by the same reference numerals.

[0019] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the accompanying drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0020] In order to make the contents of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0021] like Figures 1 to 3 As shown, a longitudinal stretching device for heat shrinkable film includes a base plate 1, a support leg 21 is provided at the bottom of the base plate 1, a box body 2 is provided on one side of the top of the base plate 1, a heating component is provided in the box body 2, and the heating component includes an upper heating plate 9 arranged in the box body 2 and a lower heating plate 10 symmetrically arranged with the upper heating plate 9, a first electric push rod 11 is provided between the upper heating plate 9 and the top inner side of the box body 2, and a second electric push rod 12 is provided between the lower heating plate 10 and the bottom inner side of the box body 2.

[0022] Through the provided heating assembly, the heat shrink film passes through the upper heating plate 9 and the lower heating plate 10, and the upper heating plate 9 and the lower heating plate 10 heat the heat shrink film. The first electric push rod 11 and the second electric push rod 12 can change the distance between the upper heating plate 9 and the lower heating plate 10, thereby changing the heating temperature.

[0023] A slide groove 3 is provided on the base plate 1, and two symmetrically arranged sliders 4 are slidably connected in the slide groove 3. A dual-output shaft motor 5 is installed at the bottom of the base plate 1. The output shafts of the dual-output shaft motor 5 are fixedly connected with a screw rod 6. The threads of the two screw rods 6 have opposite rotation directions. The two screw rods 6 are respectively threadedly connected to the two sliders 4. The top of the two sliders 4 is fixedly installed with a first drive motor 7, and the output of the first drive motor 7 is fixedly connected with a mounting plate 8.

[0024] The dual-output shaft motor 5 can drive the two screw rods 6 to rotate, and the two screw rods 6 drive the two sliders 4 to move closer to or away from each other, and adjust the distance between the mounting plates 8 according to the width of the heat shrink film. By setting the first drive motor 7, the angle between the two mounting plates 8 can be changed, and the stretching width can be adjusted according to the expansion and contraction rate of the heat shrink film.

[0025] The mounting plate 8 is provided with several evenly distributed stretching components, which include a motor base 13 fixedly mounted on the mounting plate 8, a second drive motor 14 mounted on the motor base 13, a first rotating shaft 15 fixedly connected to the output shaft of the second drive motor 14, a first extrusion roller 16 fixedly connected to the first rotating shaft 15, an end of the first rotating shaft 15 away from the first extrusion roller 16 is fixedly connected to a first gear 17, a second rotating shaft 18 is rotatably connected to the mounting plate 8, a second gear 19 is fixedly connected to the second rotating shaft 18, the first gear 17 and the second gear 19 are meshed with each other, and an end of the second rotating shaft 18 away from the second gear 19 is fixedly connected to a second extrusion roller 20, both of the first extrusion roller 16 and the second extrusion roller 20 are made of rubber, and the first extrusion roller 16 and the second extrusion roller 20 are arranged in conflict with each other.

[0026] The second drive motor 14 drives the first rotating shaft 15 to rotate, the first rotating shaft 15 drives the first gear 17 and the first squeezing roller 16 to rotate, the first gear 17 drives the second gear 19 to rotate, the second gear 19 drives the second rotating shaft 18 to rotate, and the second rotating shaft 18 drives the second squeezing roller 20 to rotate. The heated heat shrink film is squeezed by the first squeezing roller 16 and the second squeezing roller 20. Due to the angle between the two mounting plates 8, the heat shrink film is longitudinally stretched.

[0027] The above description is only a preferred embodiment of the present utility model patent and is not intended to limit the present utility model patent. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model patent shall be included in the scope of protection of the present utility model patent.

Claims

1. A longitudinal stretching device for heat shrinkable film, characterized in that: The invention comprises a bottom plate (1), a box body (2) is provided on one side of the top of the bottom plate (1), a heating component is provided in the box body (2), a slide groove (3) is provided on the bottom plate (1), two symmetrically arranged sliders (4) are slidably connected in the slide groove (3), a dual-output shaft motor (5) is installed at the bottom of the bottom plate (1), a screw rod (6) is fixedly connected to the output shaft of the dual-output shaft motor (5), the two screw rods (6) are respectively threadedly connected to the two sliders (4), a first drive motor (7) is fixedly installed on the top of the two sliders (4), a mounting plate (8) is fixedly connected to the output of the first drive motor (7), and a plurality of evenly distributed stretching components are provided on the mounting plate (8).

2. The longitudinal stretching device for heat shrinkable film according to claim 1, characterized in that: The heating assembly comprises an upper heating plate (9) arranged in a box body (2) and a lower heating plate (10) arranged symmetrically with the upper heating plate (9); a first electric push rod (11) is provided between the upper heating plate (9) and the top inner side of the box body (2); and a second electric push rod (12) is provided between the lower heating plate (10) and the bottom inner side of the box body (2).

3. The longitudinal stretching device for heat shrinkable film according to claim 1, characterized in that: The stretching assembly includes a motor base (13) fixedly mounted on a mounting plate (8), a second drive motor (14) mounted on the motor base (13), a first rotating shaft (15) fixedly connected to an output shaft of the second drive motor (14), a first squeezing roller (16) fixedly connected to the first rotating shaft (15), a first gear (17) fixedly connected to one end of the first rotating shaft (15) away from the first squeezing roller (16), a second rotating shaft (18) rotatably connected to the mounting plate (8), a second gear (19) fixedly connected to the second rotating shaft (18), the first gear (17) and the second gear (19) meshing with each other, a second squeezing roller (20) fixedly connected to one end of the second rotating shaft (18) away from the second gear (19), the first squeezing roller (16) and the second squeezing roller (20) being arranged in abutment with each other.

4. The longitudinal stretching device for heat shrinkable film according to claim 1, characterized in that: The bottom of the base plate (1) is provided with supporting legs (21).

5. The longitudinal stretching device for heat shrinkable film according to claim 1, characterized in that: The threads of the two screw rods (6) are rotated in opposite directions.

6. The longitudinal stretching device for heat shrinkable film according to claim 3, characterized in that: The first squeezing roller (16) and the second squeezing roller (20) are both made of rubber.

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