Roll-over stand of film cutting and taking mechanism

Abstract

The utility model discloses a roll-over stand of a film cutting and taking mechanism, the rear end of the roll-over stand is pivoted on a support, the front end of the roll-over stand can turn over downwards to abut against the ground, a guide groove and a wedge block are arranged on the roll-over stand, a square bearing seat is matched in the guide groove, the bearing seat is formed by splicing an upper half bearing seat and a lower half bearing seat, and the wedge block is arranged on the upper half bearing seat. The height of the bearing seat is equal to the internal height of the guide groove, the rear end face of the guide groove is a straight face, and the distance between the wedge block and the rear end face of the guide groove is equal to the width of the bearing seat. And the winding shaft is positioned in the bearing seat, then moves to the rear end face of the guide groove and is limited by the wedge-shaped block, so that the rotating stability of the winding shaft is improved.

Description

Technical Field

[0001] The utility model relates to the field of film processing, in particular to film cutting equipment. Background Art

[0002] The film used to make disposable PE gloves is formed by melting plastic pellets into a mold. The pellets are heated to a liquid state before being placed into the mold. The formed film is conveyed by rollers and wound onto a reel, forming a roll for easy transport and storage.

[0003] When using a roll of film, it needs to be pulled out to the desired length and then cut to make disposable gloves. For convenience, the roll of film is placed on a winding shaft, which is placed at the front end of a bracket. A rotating frame is installed at the rear end of the bracket. Driven by a motor, the rotating frame rotates, pulling the roll of film out. When the roll reaches the desired length, the rotating frame stops and the worker removes the film from the rotating frame.

[0004] The rolled film is heavy. After it is put on the winding shaft, workers need to lift it onto the bracket. The entire rolled film is in a suspended state. In this way, the film can be pulled out under the rotation of the rotating frame.

[0005] Patent application publication number CN117923228A discloses a film cutting and retrieving mechanism comprising a support, a rotating frame disposed at the rear end of the support, a flip frame disposed at the front end of the support, the rear end of the flip frame being pivotally connected to the support, the front end of the flip frame being able to flip downward and press against the ground, and the flip frame being provided with a front-to-back guide groove, the rear end of which is an arc-shaped groove. The end of the winding shaft is placed into the front end of the guide groove, and the front end of the flip frame is lifted from the ground. Under the action of gravity, the winding shaft moves backward along the guide groove until it enters the arc-shaped groove at the rear end of the guide groove, thereby lifting the wound film. Compared to lifting the wound film to a high height and placing it on the support, the above patent document uses a flip frame to move the wound film onto the support, which not only saves labor but also improves work efficiency. Utility Model Content

[0006] The technical problem solved by the present invention is as follows: the front end of the turning frame is lifted from the ground, and under the action of gravity, the winding shaft moves backward along the guide groove until it enters the arc groove at the rear end of the guide groove. Although it is locked by a wedge block, the film winding shaft between the wedge block and the arc groove has poor stability and is difficult to rotate around a single rotation axis during rotation.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a flip frame of the film cutting and feeding mechanism, the rear end of the flip frame is pivotally connected to the bracket, the front end of the flip frame can be flipped downward and pressed against the ground, and a guide groove and a wedge block are provided on the flip frame. A square bearing seat is matched in the guide groove, and the bearing seat is composed of an upper half bearing seat and a lower half bearing seat. The height of the bearing seat is equal to the internal height of the guide groove, the rear end face of the guide groove is a straight face, and the distance between the wedge block and the rear end face of the guide groove is equal to the width of the bearing seat.

[0008] A worker places the rolled film on the ground and inserts the winding shaft into the winding drum. The worker then tilts the turning frame downward, pressing its front end against the ground. The worker places the end of the winding shaft into the lower bearing seat, covers the upper bearing seat on top of the lower bearing seat, and positions the shaft in the seat. Because the front end of the guide slot is close to the ground, the worker can lift the end of the winding shaft with minimal force. The worker then lifts the front end of the turning frame from the ground. Gravity forces the bearing seat and the winding shaft within it backward along the guide slot, dislodging the wedge block and resting on the rear end of the guide slot. The bearing seat is now positioned between the wedge block and the rear end of the guide slot. With the rolled film in the air, the worker removes a section of film and wraps it around the rotating frame. The rotating frame then rotates, wrapping the film around itself and pulling the rolled film out. After a certain length of film is wound on the rotating frame, it stops and the worker cuts the film with a knife, removes the film from the rotating frame, and transfers it to the cutting workbench for cutting.

[0009] The turning frame consists of a pair of side panels and a connecting rod connecting them. The outer sides of the side panels are equipped with a pivot axis, and the inner sides of the side panels are provided with a guide slot. The front end of the guide slot has a bayonet, through which the bearing seat is exposed. Workers use the bayonet to fit the winding shaft into the lower half of the bearing seat, and then fit the upper half of the bearing seat onto the lower half.

[0010] The lower half bearing seat is provided with a positioning hole, and the upper half bearing seat is provided with a positioning pin. The positioning pin cooperates with the positioning hole to assemble the upper half bearing seat and the lower half bearing seat into a complete bearing seat.

[0011] The wedge block fits within the guide block, which is positioned at the top of the guide slot. A return spring is installed between the wedge block and the guide block, and the wedge block is connected to a handle. To remove the winding shaft from the guide slot, a worker pulls the handle outward, freeing the wedge block from retaining the bearing seat. The bearing seat then moves forward along the guide slot. At the catch, the worker removes the upper half of the bearing seat and then removes the winding shaft from the lower half.

[0012] A pair of side plates have slots in them, fitted with movable rods welded to connecting rods, which are then welded to the lower half of the bearing seat. Instead of lifting the tilting frame, workers can push the movable rods, allowing the bearing seat and winding shaft to move directly backward along the guide slot until the bearing seat is positioned between the wedge block and the rear end of the guide slot.

[0013] Both ends of the movable rod are equipped with an outer limiting ring and an inner limiting ring. The outer limiting ring abuts against the outer wall of the side plate, while the inner limiting ring abuts against the inner wall of the side plate. The outer limiting ring and the inner limiting ring can limit the position of the side plate and the movable rod, which helps to increase the strength of the flip frame.

[0014] Compared with the previous technology, the present invention adopts a bearing seat in the guide groove to position the winding shaft, which is beneficial to improving the stability of the winding shaft rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings:

[0016] Figure 1 A schematic diagram of a turning frame of a film cutting and retrieving mechanism;

[0017] Figure 2 for Figure 1 The schematic diagram of the flip frame after it is rotated another 90 degrees is shown on the middle left;

[0018] Figure 3 for Figure 1 Bottom view of

[0019] Figure 4 for Figure 1 AA section view;

[0020] Figure 5 Schematic diagram of the winding shaft 60 moving to the working position;

[0021] Figure 6 for Figure 5 A partial enlarged view of .

[0022] Explanation of symbols in the figure:

[0023] 10. Side plate; 11. Guide groove; 110. Rear end face of guide groove; 12. Bayonet; 13. Strip groove;

[0024] 20. Wedge block; 21. Guide block; 22. Return spring; 23. Handle;

[0025] 30. Bearing seat; 31. Upper bearing seat; 32. Lower bearing seat;

[0026] 40. Connecting rod; 41. Pivot shaft;

[0027] 50. Movable rod; 51. Connecting rod; 52. External limiting ring; 53. Internal limiting ring;

[0028] 60. Winding shaft. DETAILED DESCRIPTION

[0029] like Figure 1 、 Figure 4 The film cutting and feeding mechanism has a turning frame, the rear end of the turning frame is pivotally connected to the bracket, and the front end of the turning frame can be turned downward and pressed against the ground. The turning frame is provided with a guide groove 11 and a wedge block 20. A square bearing seat is matched in the guide groove. The bearing seat is composed of an upper bearing seat 31 and a lower bearing seat 32. The height of the bearing seat is equal to the internal height of the guide groove. The rear end face of the guide groove is a straight face. The distance between the wedge block and the rear end face of the guide groove is equal to the width of the bearing seat.

[0030] The flip frame includes a pair of side plates 10 and a connecting rod 40 connecting the pair of side plates. A pivot shaft 41 is provided on the outer side of the pair of side plates, and a guide groove 11 is provided on the inner side of the pair of side plates; a bayonet 12 is provided at the front end of the guide groove, and the bearing seat can be exposed at the bayonet.

[0031] The lower bearing seat 32 is provided with a positioning hole, and the upper bearing seat 31 is provided with a positioning pin, which cooperates with the positioning hole.

[0032] like Figure 6 The wedge block 20 fits in the guide block 21 , the guide block is arranged at the top of the guide groove 11 , a return spring 22 is provided between the wedge block and the guide block, and the wedge block is connected to the handle 23 .

[0033] like Figure 3 、 Figure 4 A pair of side plates 10 are provided with strip grooves 13 , in which a movable rod 50 is matched, and a connecting rod 51 is welded to the movable rod, and the connecting rod is welded to the lower half bearing seat 32 .

[0034] like Figure 1 、 Figure 2 Both ends of the movable rod 50 are provided with an outer limiting ring 52 and an inner limiting ring 53, the outer limiting ring abuts against the outer side wall of the side plate 10, and the inner limiting ring abuts against the inner side wall of the side plate.

[0035] refer to Figure 4 、 Figure 5The worker places the rolled film on the ground and inserts the winding shaft 60 into the winding drum. The worker then flips the turning frame downward, pressing its front end against the ground. The worker places the end of the winding shaft into the lower bearing seat 32 and covers the upper bearing seat 31 on top of the lower bearing seat, positioning the shaft within the bearing seat 30. Because the front end of the guide slot is relatively close to the ground, the worker can lift the end of the winding shaft 60 with minimal force. The worker then lifts the front end of the turning frame from the ground. Under the influence of gravity, the bearing seat and the winding shaft within it move backward along the guide slot 11, pushing the bearing seat away from the wedge block 20 and resting on the rear end surface 110 of the guide slot. The bearing seat 30 is now positioned between the wedge block 20 and the rear end surface 110 of the guide slot. With the rolled film in the air, the worker removes a section of film and wraps it around the rotating frame. The rotating frame then rotates, wrapping the film around itself and pulling the rolled film out. After a certain length of film is wound on the rotating frame, it stops and the worker cuts the film with a knife, removes the film from the rotating frame, and transfers it to the cutting workbench for cutting.

[0036] Alternatively, the worker can push the movable rod 50 without lifting the turnover frame, so that the bearing seat and the winding shaft 60 are directly moved back along the guide groove 11 until the bearing seat is positioned between the wedge block 20 and the rear end face 110 of the guide groove.

[0037] When the winding shaft 60 needs to be removed from the guide groove 11, the worker pulls the handle 23 outward so that the wedge block 20 no longer limits the bearing seat 30. The bearing seat moves forward along the guide groove 11. At the bayonet 12, the worker removes the upper bearing seat 31 and then removes the winding shaft 60 from the lower bearing seat 32.

[0038] The above content is only a preferred embodiment of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation method and application scope. The content of this specification should not be understood as limiting the present invention.

Claims

1. A turning frame of a film cutting and retrieving mechanism, wherein the rear end of the turning frame is pivotally connected to the bracket, and the front end of the turning frame can be turned downward and pressed against the ground. The turning frame is provided with a guide groove (11) and a wedge block (20), and is characterized in that: A square-shaped bearing seat is matched in the guide groove. The bearing seat is composed of an upper bearing seat (31) and a lower bearing seat (32). The height of the bearing seat is equal to the inner height of the guide groove. The rear end surface of the guide groove is a straight surface. The distance between the wedge block and the rear end surface of the guide groove is equal to the width of the bearing seat.

2. The turning frame of the film cutting and retrieving mechanism according to claim 1, characterized in that: The turning frame includes a pair of side plates (10) and a connecting rod (40) connecting the pair of side plates. A pivot shaft (41) is provided on the outer side of the pair of side plates, and a guide groove (11) is provided on the inner side of the pair of side plates. A bayonet (12) is provided at the front end of the guide groove, and a bearing seat can be exposed at the bayonet.

3. The turning frame of the film cutting and feeding mechanism according to claim 1, characterized in that: The lower half bearing seat (32) is provided with a positioning hole, and the upper half bearing seat (31) is provided with a positioning pin, which is matched with the positioning hole.

4. The turning frame of the film cutting and taking mechanism according to claim 1, characterized in that: The wedge block (20) is fitted in the guide block (21), which is arranged at the top of the guide groove (11). A return spring (22) is provided between the wedge block and the guide block, and the wedge block is connected to the handle (23).

5. The turning frame of the film cutting and taking mechanism according to claim 2, characterized in that: A pair of side plates (10) are provided with strip grooves (13), in which a movable rod (50) is matched, a connecting rod (51) is welded to the movable rod, and the connecting rod is welded to the lower half bearing seat (32).

6. The turning frame of the film cutting and taking mechanism according to claim 5, characterized in that: Both ends of the movable rod (50) are provided with an outer limiting ring (52) and an inner limiting ring (53), the outer limiting ring abuts against the outer side wall of the side plate (10), and the inner limiting ring abuts against the inner side wall of the side plate.

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