Tensioning mechanism of PE wrapping film unit

Abstract

The utility model discloses a tensioning mechanism of a PE wrapping film unit, and relates to the technical field of PE wrapping films, the tensioning mechanism comprises a mounting frame, a plurality of cross-shaped grooves are formed in the mounting frame, first threaded rods are arranged in the cross-shaped grooves, threads formed in three of the first threaded rods are opposite to threads formed in the other two of the first threaded rods, and the cross-shaped grooves are formed in the mounting frame. Wherein the outer side of one first threaded rod is fixedly connected with a first worm gear, the outer side of the first worm gear is connected with a first worm in an engaged mode, a plurality of second bevel gears are engaged with a plurality of first bevel gears correspondingly, so that synchronous rotation of the first threaded rods is achieved, and the first threaded rods are in threaded connection with a plurality of cross-shaped sliding seats correspondingly; wherein three of the cross-shaped sliding seats drive three of the guide rollers to move upwards through the mounting structures, and the other two of the cross-shaped sliding seats drive the other two of the guide rollers to move downwards through the mounting structures, so that tensioning adjustment of the multiple guide rollers on the winding film is realized, and the winding film has stability under the working condition.

Description

TECHNICAL FIELD

[0001] The utility model relates to PE winding film technical field, concretely is a kind of PE winding film unit's tensioning mechanism. BACKGROUND

[0002] PE winding film is generally used for the transportation and sale of various products, and it provides stable coverage for the products through its puncture resistance and good shrinkage. In the production stage, to complete the normal winding of PE winding film on the winding equipment, the production and delivery of PE winding film need to be completed with the tensioning mechanism to avoid the deviation of PE winding film affecting the winding quality.

[0003] The present application discloses a kind of PE winding film unit's tensioning mechanism with publication number CN219823134U, including mounting frame, the top of the mounting frame is movably connected with slide, the bottom of the slide is fixed with positioning pin, the front end of the positioning pin is connected with rack, the top of the rack is fixed with guide roller, guide hole is staggered up and down, guide roller and rack cooperate, facilitate worker to manually pull winding film through guide roller, complete the rapid feeding operation of winding film, slide completes the rapid assembly of rack by positioning pin, facilitate worker to overhaul disassembly and assembly equipment.

[0004] In the above scheme, although there are many benefits, but there are the following shortcomings: driving motor drives take-up reel to rotate, completes the winding and release of cable outside take-up reel, fixed wheel fixes the right end of cable, cooperates with the guide wheel on slide and the limiting spring at the rear end of slide, completes the working position adjustment of slide on the top of mounting frame, cooperates with the staggered design of guide hole up and down, realizes the quick adjustment operation of guide roller to the tension of winding film, but in the case of device working, multiple limiting springs can vibrate slightly, so that guide roller does not have stability, affects the tensioning effect of winding film, reduces the practicability of device. SUMMARY

[0005] The utility model aims at providing a kind of PE winding film unit's tensioning mechanism, to solve the problem that multiple limiting springs can vibrate slightly in the case of device working in prior art, so that guide roller does not have stability, affects the tensioning effect of winding film, reduces the practicability of device.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of tensioning mechanism of PE winding film unit, including mounting frame, multiple cross slots are set in the mounting frame, multiple the first threaded rod is equipped inside the cross slot, wherein the thread of the first threaded rod of three and another first threaded rod is opposite, wherein the first threaded rod outside fixedly connected with first worm wheel, first worm wheel outside is engaged with first worm, and the first threaded rod one end is equipped with driving element, and the first threaded rod top end passes through cross slot inside top end and extends to mounting frame top, and the first threaded rod is rotatably connected with mounting frame, and the first threaded rod top end is fixedly connected with first bevel gear, and the mounting frame top is equipped with transmission rod, and the transmission rod outside is fixedly connected with multiple second bevel gears, and multiple the second bevel gear is engaged with the outside of multiple first bevel gears respectively, the first threaded rod outside is connected with cross slide base by thread, and the cross slide base is arranged in cross slot inside and is slidably connected with mounting frame, and the cross slide base outside is equipped with guide roller, and the guide roller outside is equipped with mounting structure.

[0007] Preferably, the first worm wheel and first worm are arranged in one of the cross slots, and the first worm extends to the outside of one of the cross slots at one end, and a connecting seat is rotatably connected to the outside of the first worm at one end, and the connecting seat is fixedly connected to the mounting frame. The connecting seat is arranged to stabilize the rotation of the first worm.

[0008] Preferably, the driving element includes a reversible motor, which is arranged at one end of the first worm, and the reversible motor is fixedly connected to the mounting frame, and the output end of the reversible motor is fixedly connected to the first worm.

[0009] Preferably, the transmission rod is rotatably connected to a support seat at both ends, and the two support seats are fixedly connected to the top of the mounting frame. The two support seats are arranged to rotatably support the transmission rod.

[0010] Preferably, the mounting structure includes two limiting rods, and the two limiting rods are fixedly connected to the two ends of the guide roller, respectively. The two limiting rods are rotatably connected to the support seat outside.

[0011] Preferably, the mounting structure further includes an L-shaped mounting plate, which is fixedly connected to the outside of the cross slide base. One end of one of the limiting sleeves passes through the inside of the L-shaped mounting plate and is rotatably connected to the L-shaped mounting plate. The other limiting sleeve is rotatably connected to a bracket.

[0012] Preferably, the L-shaped mounting plate top is provided with a sliding groove, one end of the L-shaped mounting plate is provided with a second worm wheel, one side of the second worm wheel is fixedly connected with a second threaded rod, one end of the second threaded rod penetrates through one end of the L-shaped mounting plate and extends into the sliding groove, the second threaded rod is rotatably connected with the L-shaped mounting plate, the bracket extends into the sliding groove at the bottom end, the bracket is screw-connected to the outside of the second threaded rod, the bracket is slidably connected with the L-shaped mounting plate, the outside of the second worm wheel is meshingly connected with a second worm, and the second worm is rotatably connected with a supporting block at one end of the outside.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] 1、The multiple second bevel gears are meshed with the multiple first bevel gears respectively, so that the multiple first threaded rods are synchronously rotated, the multiple first threaded rods are screw-connected with the multiple cross slides respectively, three cross slides drive three guide rollers to move upwards through the mounting structure, and the other two cross slides drive the other two guide rollers to move downwards through the mounting structure, so that the multiple guide rollers realize the tension adjustment of the wrapping film and have stability in the working condition.

[0015] 2、The second worm is meshed with the second worm wheel, the second worm wheel drives the second threaded rod to rotate, the second threaded rod is screw-connected with the bracket, the bracket drives the other limiting sleeve to move, and after the other limiting sleeve moves away from the other limiting rod by a distance, one limiting rod is pulled out from one limiting sleeve, so that the guide roller is disassembled, and personnel can replace the guide roller individually. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure schematic view of the tensioning mechanism of the PE wrapping film machine set.

[0017] Figure 2 It is a whole structure schematic view of the tensioning mechanism of the PE wrapping film machine set. Figure 1 It is an enlarged view of A part structure of the tensioning mechanism of the PE wrapping film machine set.

[0018] Figure 3 It is a split structure schematic view of the guide roller and the L-shaped mounting plate of the tensioning mechanism of the PE wrapping film machine set.

[0019] Figure 4 It is an enlarged view of B part structure of the tensioning mechanism of the PE wrapping film machine set. Figure 3

[0020] ​The following are the labeling elements in the diagram: 1. Mounting bracket; 2. Cross groove; 3. First threaded rod; 4. First bevel gear; 5. Transmission rod; 6. Second bevel gear; 7. Support seat; 8. Cross slide; 9. First worm gear; 10. First worm; 11. Connecting seat; 12. L-shaped mounting plate; 120. Slide groove; 13. Guide roller; 14. Limiting rod; 15. Limiting sleeve; 16. Bracket; 17. Second threaded rod; 18. Second worm gear; 19. Second worm. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example: Figure 1 - Figure 4 As shown, this utility model provides a technical solution for the tensioning mechanism of a PE stretch film machine, including a mounting frame 1. The mounting frame 1 has multiple cross grooves 2, each containing a first threaded rod 3. Three of the first threaded rods 3 have threads opposite to the other two. A first worm gear 9 is fixedly connected to the outer side of one of the first threaded rods 3, and a first worm 10 is meshed with the outer side of the first worm gear 9. Both the first worm gear 9 and the first worm 10 are located inside one of the cross grooves 2. One end of the first worm 10 extends to the outer side of one of the cross grooves 2, and a connecting seat 11 is rotatably connected to the outer side of one end of the first worm 10. The bottom end of the connecting seat 11 is fixedly connected to the mounting frame 1. A driving component is provided at one end of the first worm 10, including a forward and reverse motor, which is located at one end of the first worm 10. The forward and reverse motors are fixedly connected to the mounting bracket 1. The output end of the forward and reverse motors is fixedly connected to the first worm gear 10. The top end of the first threaded rod 3 passes through the top end of the cross groove 2 and extends to the top of the mounting bracket 1. The first threaded rod 3 is rotatably connected to the mounting bracket 1. The top end of the first threaded rod 3 is fixedly connected to the first bevel gear 4. The top of the mounting bracket 1 is provided with a transmission rod 5. Both ends of the transmission rod 5 are rotatably connected to support seats 7. Both support seats 7 are fixedly connected to the top of the mounting bracket 1. Multiple second bevel gears 6 are fixedly connected to the outside of the transmission rod 5. The multiple second bevel gears 6 are respectively meshed with the outside of the multiple first bevel gears 4. The outside of the first threaded rod 3 is threadedly connected to a cross slide 8. The cross slide 8 is set inside the cross groove 2 and slidably connected to the mounting bracket 1. A guide roller 13 is provided on the outside of the cross slide 8. An installation structure is provided on the outside of the guide roller 13.

[0023] Specifically, starting the forward and reverse motors (the specific model of the motors is not limited, but depends on the compatible equipment) causes the output of the forward and reverse motors to drive the first worm gear 10 to rotate. The first worm gear 10 meshes with the first worm wheel 9, which in turn drives one of the first threaded rods 3 to rotate the first bevel gear 4. The first bevel gear 4 meshes with one of the second bevel gears 6, and the second bevel gear 6 drives several other second bevel gears 6 to rotate synchronously via the transmission rod 5. The multiple second bevel gears 6 mesh with multiple first bevel gears 4, thereby achieving synchronous rotation of multiple first threaded rods 3. The multiple first threaded rods 3 are threadedly connected to multiple cross slides 8. Three of the cross slides 8 drive three guide rollers 13 to move upward through the mounting structure, while the other two cross slides 8 drive two other guide rollers 13 to move downward through the mounting structure. This achieves tension adjustment of the wrapping film by multiple guide rollers 13, ensuring stability during operation.

[0024] Example: Figure 1 , Figure 3 and Figure 4 As shown, the installation structure includes two limiting rods 14, which are fixedly connected to both ends of the guide roller 13. A limiting sleeve 15 is fitted onto the outer side of one end of each limiting rod 14. The installation structure also includes an L-shaped mounting plate 12, which is fixedly connected to the outer side of the cross slide block 8. One end of one limiting sleeve 15 passes through the inner side of the L-shaped mounting plate 12 and is rotatably connected to it. A bracket 16 is rotatably connected to the outer side of the other limiting sleeve 15. A groove 120 is provided on the top of the L-shaped mounting plate 12. A second worm gear 18 is provided at one end of the L-shaped mounting plate 12. A second threaded rod 17 is fixedly connected to one side of the worm gear 18. One end of the second threaded rod 17 passes through one end of the L-shaped mounting plate 12 and extends into the slide groove 120. The second threaded rod 17 is rotatably connected to the L-shaped mounting plate 12. The bottom end of the bracket 16 extends into the slide groove 120. The bracket 16 is threadedly connected to the outside of the second threaded rod 17. The bracket 16 is slidably connected to the L-shaped mounting plate 12. A second worm 19 is meshed with the outside of the second worm gear 18. A support block is rotatably connected to the outside of one end of the second worm 19. The support block is fixedly connected to one end of the L-shaped mounting plate 12. A throttle is installed on one end of the second worm 19.

[0025] Specifically, by turning the throttle, the second worm 19 meshes with the second worm wheel 18, and the second worm wheel 18 drives the second threaded rod 17 to rotate. The second threaded rod 17 is threadedly connected to the bracket 16, and the bracket 16 drives the other limiting sleeve 15 to move. After the other limiting sleeve 15 moves away from the other limiting rod 14 by a certain distance, one of the limiting rods 14 can be pulled out from one of the limiting sleeves 15, thus completing the disassembly of the guide roller 13, which is convenient for personnel to replace the guide roller 13 individually.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A tensioning mechanism for a PE stretch film machine, characterized in that: The mounting bracket (1) includes a mounting frame (1) with multiple cross grooves (2). Each cross groove (2) contains a first threaded rod (3). Three of the first threaded rods (3) have threads opposite to the other two. One of the first threaded rods (3) is fixedly connected to a first worm gear (9) on its outer side. The first worm gear (9) is meshed with a first worm (10) on its outer side. One end of the first worm (10) is provided with a driving member. The top end of the first threaded rod (3) passes through the top end of the cross groove (2) and extends to the top of the mounting frame (1). The first threaded rod (3) is connected to the mounting frame (1). The mounting bracket (1) is rotatably connected. The top end of the first threaded rod (3) is fixedly connected to the first bevel gear (4). The top of the mounting bracket (1) is provided with a transmission rod (5). The outer side of the transmission rod (5) is fixedly connected to a plurality of second bevel gears (6). The plurality of second bevel gears (6) are respectively meshed and connected to the outer side of the plurality of first bevel gears (4). The outer side of the first threaded rod (3) is threadedly connected to a cross slide (8). The cross slide (8) is set inside the cross groove (2) and slidably connected to the mounting bracket (1). The outer side of the cross slide (8) is provided with a guide roller (13). The outer side of the guide roller (13) is provided with an installation structure.

2. The tensioning mechanism of a PE stretch film machine according to claim 1, characterized in that: The first worm gear (9) and the first worm (10) are both located inside one of the cross grooves (2). One end of the first worm (10) extends to the outside of one of the cross grooves (2). A connecting seat (11) is rotatably connected to the outside of one end of the first worm (10). The bottom end of the connecting seat (11) is fixedly connected to the mounting bracket (1).

3. The tensioning mechanism of a PE stretch film unit according to claim 1, characterized in that: The driving component includes a forward and reverse motor, which is disposed at one end of the first worm (10). The forward and reverse motor is fixedly connected to the mounting bracket (1), and the output end of the forward and reverse motor is fixedly connected to the first worm (10).

4. The tensioning mechanism of a PE stretch film unit according to claim 1, characterized in that: Both ends of the transmission rod (5) are rotatably connected to support seats (7), and both support seats (7) are fixedly connected to the top of the mounting frame (1).

5. The tensioning mechanism of a PE stretch film unit according to claim 1, characterized in that: The installation structure includes two limiting rods (14), which are fixedly connected to both ends of the guide roller (13). A limiting sleeve (15) is sleeved on the outer side of one end of each of the two limiting rods (14).

6. The tensioning mechanism of a PE stretch film unit according to claim 5, characterized in that: The mounting structure also includes an L-shaped mounting plate (12), which is fixedly connected to the outside of the cross slide (8). One end of one of the limiting sleeves (15) passes through the inside of the L-shaped mounting plate (12) and is rotatably connected to the L-shaped mounting plate (12). The other limiting sleeve (15) is rotatably connected to a bracket (16).

7. The tensioning mechanism of a PE stretch film unit according to claim 6, characterized in that: The L-shaped mounting plate (12) has a groove (120) on its top. One end of the L-shaped mounting plate (12) is provided with a second worm gear (18). A second threaded rod (17) is fixedly connected to one side of the second worm gear (18). One end of the second threaded rod (17) passes through one end of the L-shaped mounting plate (12) and extends into the groove (120). The second threaded rod (17) is rotatably connected to the L-shaped mounting plate (12). The bottom end of the bracket (16) extends into the groove (120). The bracket (16) is threaded to the outside of the second threaded rod (17). The bracket (16) is slidably connected to the L-shaped mounting plate (12). A second worm (19) is meshed with the outside of the second worm gear (18). A support block is rotatably connected to the outside of one end of the second worm (19). The support block is fixedly connected to one end of the L-shaped mounting plate (12). A throttle is installed on one end of the second worm (19).

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