Tension adjusting frame for PVC (polyvinyl chloride) thermal shrinkage film production

Abstract

The utility model provides a tension adjusting frame for PVC (polyvinyl chloride) thermal shrinkage film production, and belongs to the field of PVC films. A tension adjusting frame for PVC heat shrink film production comprises two side plates, two fixing plates and two first motors are fixedly installed on the two side plates, threaded rods are fixedly installed at the output ends of the two first motors, two sliding strips are in threaded fit with the two ends of each threaded rod, a plurality of sliding blocks are fixedly installed on the two sliding strips, and the sliding blocks are fixedly installed on the two side plates. Wherein a plurality of second motors are fixedly installed on one sides of the sliding blocks on the two sliding strips, tensioning rods for tensioning the PVC film are fixedly installed at the output ends of the second motors, and electric push rods are fixedly installed on the two fixing plates. Through the arrangement of the electric push rod, the two limiting plates can be pushed to slide and get close to each other, so that the two adjacent limiting plates can limit the two sides of a PVC film, and PVC located on the adjusting frame is not prone to deviation when moving.

Description

Technical Field

[0001] This utility model relates to the field of PVC film technology, and in particular to a tension adjustment frame for PVC heat shrink film production. Background Technology

[0002] PVC decorative film is a new type of decorative material made from high molecular polymers, with the addition of various additives, through calendering and compounding. During the production process, PVC decorative film needs to be conveyed by conveyor rollers. However, due to errors in the rotation speed of the conveyor rollers, the PVC decorative film may become too loose or too tight, which can easily cause wrinkles during conveying. In order to adjust the tension of the PVC decorative film during conveying,

[0003] In the prior art, such as the tension adjusting device for PVC decorative film production disclosed in CN209970890U, there is a base, a support seat, a feeding roller, and a receiving roller. The support seats are fixedly installed on both sides of the upper end of the base, and the feeding roller is rotatably installed on the support seat on one side of the base via a rotating shaft. Through the cooperation of the tension adjusting mechanism, handle, threaded rod, threaded sleeve, moving plate, and slide groove, the PVC film enters the support frame from the feeding roller. However, in the prior art, the tension adjusting device for PVC decorative film production cannot limit the two sides of the PVC film during the tensioning process, which makes the PVC film prone to deviation on the device. Therefore, a tension adjusting frame for PVC heat shrink film production is proposed. Utility Model Content

[0004] In view of this, the present invention aims to provide a tension adjustment frame for PVC heat shrink film production to solve or alleviate the technical problems existing in the prior art. By installing an electric push rod, two limiting plates can be pushed to slide closer to each other, so that the two limiting plates can limit the two sides of the PVC film after they are close together, thereby making it less likely for the PVC film on the adjustment frame to deviate when it moves.

[0005] The technical solution of this utility model embodiment is implemented as follows:

[0006] A tension adjustment frame for PVC heat shrink film production includes two side plates. Two fixed plates and two first motors are fixedly mounted on the two side plates. Each of the output ends of the two first motors has a threaded rod fixedly mounted on it. Two sliding strips are threadedly engaged at both ends of the threaded rods. Multiple sliding blocks are fixedly mounted on each of the sliding strips. Multiple second motors are fixedly mounted on one side of each sliding block on the two sliding strips. Tensioning rods for tensioning the PVC film are fixedly mounted on the output ends of the multiple second motors. Electric push rods are fixedly mounted on both fixed plates. Two gears are rotatably engaged with the electric push rods, and sliding frames that mesh with the gears are slidably engaged with them. A rack that meshes with the two gears is fixedly mounted on the output end of the electric push rod. Two limiting plates are fixedly mounted between the two racks and the sliding frames.

[0007] Preferably, the two fixing plates are fixedly installed on the upper and lower sides of the two side plates, and the bottom ends of the two side plates are provided with support protrusions for supporting the side plates. The two first motors are fixedly installed on the two side plates. The support protrusions facilitate the support of the adjustment frame.

[0008] Preferably, each of the two side plates has a limiting protrusion for limiting the threaded rod on one side, and four guide rods that pass through the four sliding bars are fixedly installed on both sides of the two threaded rods. Each of the two side plates has a fixing protrusion for fixing the guide rods, and four guide posts for guiding the two limiting plates are fixedly installed between the two side plates. The installation of the guide rods can guide the sliding bars during the sliding process, thereby making the sliding bars slide more smoothly.

[0009] Preferably, both fixing plates are provided with a first square hole and two second square holes, and a first sliding part is provided on the lower surface of the rack that is slidably fitted inside the first square hole. The opening of the first square hole facilitates the fixed connection between the rack and the limiting plate.

[0010] Preferably, each of the two sliding frames has a second sliding part that is slidably fitted inside the second square hole on its lower side. The second sliding part is fixedly connected to the limiting plate. The opening of the second square hole facilitates the fixed connection between the sliding frame and the limiting plate.

[0011] Preferably, the two sliding frames are provided with toothed grooves that mesh with the rack on their sides, and the two limiting plates are provided with keyway holes corresponding to the multiple tensioning rods. The keyway holes facilitate the sliding of the tensioning rods.

[0012] The present invention has the following advantages due to the adoption of the above technical solution:

[0013] I. This utility model, through the installation of an electric push rod, can push two limiting plates to slide closer to each other, so that the two limiting plates can limit the two sides of the PVC film after they are close together, thus making it less likely for the PVC film on the adjustment frame to deviate when it moves.

[0014] Second, by installing two first motors, this utility model can drive multiple tensioning rods to slide away from each other, so that one rotation of the first motor can achieve a geometric multiple of tension distance on the PVC film, thus making the tension distance of the adjustment frame on the PVC film longer.

[0015] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a bottom view of the structure of this utility model;

[0019] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0020] Figure 4 This is a structural diagram of the gear of this utility model.

[0021] Reference numerals: 1. Side plate; 2. Fixing plate; 3. First motor; 4. Threaded rod; 5. Sliding bar; 6. Sliding block; 7. Second motor; 8. Tensioning rod; 9. Electric push rod; 10. Gear; 11. Sliding frame; 12. Rack; 13. Limiting plate; 14. Guide rod; 15. Guide post; 101. Limiting protrusion; 102. Fixing protrusion; 201. First square hole; 202. Second square hole. Detailed Implementation

[0022] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0023] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0024] like Figure 1-4 As shown, this utility model embodiment provides a tension adjustment frame for PVC heat shrink film production, including: two side plates 1, two fixed plates 2 and two first motors 3 fixedly installed on the two side plates 1, threaded rods 4 fixedly installed on the output ends of the two first motors 3, two sliding strips 5 threadedly engaged at both ends of the threaded rods 4, multiple sliding blocks 6 fixedly installed on the two sliding strips 5, multiple second motors 7 fixedly installed on one side of the sliding blocks 6 on the two sliding strips 5, tensioning rods 8 for tensioning PVC film fixedly installed on the output ends of the multiple second motors 7, electric push rods 9 fixedly installed on the two fixed plates 2, two gears 10 rotatably engaged, and sliding frames 11 meshing with the two gears 10 slidably engaged, racks 12 meshing with the two gears 10 fixedly installed on the output ends of the electric push rods 9, and two limiting plates 13 fixedly installed between the two racks 12 and the sliding frames 11.

[0025] In this embodiment, specifically: two fixing plates 2 are fixedly installed on the upper and lower sides of two side plates 1, and support protrusions for supporting the side plates 1 are provided at both ends of the bottom of the two side plates 1. Two first motors 3 are fixedly installed on both sides of the two side plates 1. The installation of the motors 3 facilitates the tensioning rod 8 to tension the PVC film.

[0026] In this embodiment, specifically: one side of each of the two side plates 1 is provided with a limiting protrusion 101 for limiting the threaded rod 4; four guide rods 14, each passing through a sliding bar 5, are fixedly installed on both sides of the two threaded rods 4; a fixing protrusion 102 for fixing the guide rod 14 is provided on each of the two side plates 1; and four guide posts 15 for guiding the two limiting plates 13 are fixedly installed between the two side plates 1. The setting of the fixing protrusion 102 facilitates the installation of the guide rod 14.

[0027] In this embodiment, specifically: both fixed plates 2 are provided with a first square hole 201 and two second square holes 202. The lower surface of the rack 12 is provided with a first sliding part that is slidably fitted inside the first square hole 201. The opening of the second square hole 202 facilitates the sliding of the sliding frame 11.

[0028] In this embodiment, specifically: both ends of the two sliding frames 11 are provided with a second sliding part that is slidably fitted inside the second square hole 202. The second sliding part is fixedly connected to the limiting plate 13. The provision of the second sliding part facilitates the fixed connection between the sliding frame 11 and the limiting plate 13.

[0029] In this embodiment, specifically: the two sliding frames 11 are provided with toothed grooves that mesh with the rack 12 on the side that is close to each other, and the two limiting plates 13 are provided with keyway holes corresponding to the multiple tensioning rods 8. The opening of the toothed grooves facilitates the meshing of the sliding frame 11 with the gear 10.

[0030] When this utility model is in operation: when the adjustment frame needs to tension the PVC film, the PVC film is passed through multiple tensioning rods 8 in sequence, and then the first motor 3 is turned on. The first motor 3 drives the threaded rod 4 to rotate, and the two sliding strips 5 slide away from each other. At this time, the PVC film between the multiple tensioning rods 8 is tensioned. Since the adjustment frame is equipped with multiple tensioning rods 8, even if a single tensioning rod 8 moves a short distance, it can still complete the tensioning of a relatively long distance of PVC film.

[0031] When it is necessary to limit the PVC film, the electric push rod 9 is activated. The activation of the electric push rod 9 drives the rack 12 to slide, the gear 10 to rotate, and the sliding frame 11 to slide. At this time, the rack 12 and the sliding frame 11 drive the two limiting plates 13 to slide closer to each other. The two limiting plates 13 that slide closer to each other limit the PVC film, thereby making the PVC film less likely to deviate after being limited.

[0032] When the PVC film moves within the adjustment frame, the second motor 7 is activated, causing the tension rod 8 to rotate, and the PVC film located around the tension rod 8 moves.

[0033] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A tension adjustment frame for PVC heat shrink film production, comprising two side plates (1), characterized in that: Two fixing plates (2) and two first motors (3) are fixedly installed on the two side plates (1). Threaded rods (4) are fixedly installed on the output ends of the two first motors (3). Two sliding bars (5) are threadedly fitted at both ends of the threaded rods (4). Multiple sliding blocks (6) are fixedly installed on the two sliding bars (5). Multiple second motors (7) are fixedly installed on one side of the sliding blocks (6) on the two sliding bars (5). Tensioning rods (8) for tensioning PVC film are fixedly installed on the output ends of multiple second motors (7). Electric push rods (9) are fixedly installed on two fixed plates (2). Two gears (10) are rotatably fitted and sliding frames (11) meshing with the two gears (10) are slidably fitted. A rack (12) meshing with the two gears (10) is fixedly installed on the output end of the electric push rod (9). Two limiting plates (13) are fixedly installed between the two racks (12) and the sliding frame (11).

2. The tension adjustment frame for PVC heat shrink film production according to claim 1, characterized in that: The two fixing plates (2) are fixedly installed on the upper and lower sides of the two side plates (1). The bottom ends of the two side plates (1) are provided with support protrusions for supporting the side plates (1). The two first motors (3) are fixedly installed on both sides of the two side plates (1).

3. The tension adjustment frame for PVC heat shrink film production according to claim 1, characterized in that: Each of the two side plates (1) is provided with a limiting protrusion (101) for limiting the threaded rod (4) on one side. Four guide rods (14) that pass through the four sliding bars (5) are fixedly installed on both sides of the two threaded rods (4). Each of the two side plates (1) is provided with a fixing protrusion (102) for fixing the guide rod (14). Four guide posts (15) for guiding the two limiting plates (13) are fixedly installed between the two side plates (1).

4. The tension adjustment frame for PVC heat shrink film production according to claim 1, characterized in that: Both of the fixed plates (2) are provided with a first square hole (201) and two second square holes (202). The lower surface of the rack (12) is provided with a first sliding part that is slidably fitted inside the first square hole (201).

5. A tension adjustment frame for PVC heat shrink film production according to claim 4, characterized in that: Both ends of the two sliding frames (11) are provided with a second sliding part that is slidably fitted inside the second square hole (202), and the second sliding part is fixedly connected to the limiting plate (13).

6. A tension adjustment frame for PVC heat shrink film production according to claim 5, characterized in that: Both sliding frames (11) have toothed grooves that mesh with the rack (12) on their sides that are close to each other, and the two limiting plates (13) have keyway holes that correspond to the multiple tensioning rods (8).

Images