Plastic bag winding and unwinding mechanism

Abstract

The utility model relates to the technical field of mechanical transmission, and discloses a plastic bag winding and unwinding mechanism which comprises a base, a supporting plate, a plastic bag, a rolling shaft assembly, a lead screw assembly and a pressing assembly. A supporting plate is fixedly arranged on the base, a rolling shaft assembly is arranged on the supporting plate, and a plastic bag rolls on the rolling shaft assembly; the lead screw assembly is fixed to the supporting plate, and a pressing assembly is arranged on the lead screw assembly. The lead screw assembly is matched with the pressing assembly, the forward and reverse rotation motor is used for driving the two-way lead screw to rotate, due to the fact that a clamping protruding head at the end of a telescopic rod in the pressing assembly is connected with the two-way lead screw in a threaded embedded mode, a pressing structure moves left and right on the two-way lead screw to achieve pressing, and when rolling is conducted, the plastic bag can be rolled up along with the change of the thickness of the plastic bag. The telescopic rod is driven by the two-way lead screw and matched with other parts, the process of accurate adjustment of the vertical position and initial rolling or thickness increasing of the thin plastic bag is achieved, the adjusting and pressing structure can apply appropriate pressure to the plastic bag, and the rolling stability is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical drive technical field, concretely is a plastic bag take -up and pay -off mechanism. BACKGROUND

[0002] For the prior art patent file No. CN215557601U discloses a kind of take -up and pay -off mechanism of medical bag making machine, including base and take -up reel, the upper end of base both sides is vertically connected with bearing plate, the upper end of two bearing plates is fixedly connected with horizontal plate, the take -up reel is rotatably arranged between two bearing plates by transmission part, the inner wall both sides of horizontal plate are movably inserted into limiting rod, the lower end of two limiting rods is fixedly connected with concave plate, and the upper end of two limiting rods is fixedly connected with limiting disc, the inner wall of concave plate is rotatably connected with extruding roller, the utility model has the beneficial effect that plastic bag can realize the effect of tight winding when winding, improve the winding quality of plastic bag, simultaneously, it is convenient for worker to send the plastic bag roll after winding and weight to workshop flat car and shift, reduce labor burden.

[0003] But the above scheme and prior art, some take -up and pay -off mechanism lack the compression structure that can be adjusted according to winding condition when working, not tight condition is prone to appear in the process of plastic bag winding, take -up and pay -off mechanism still has deficiencies in this respect, need to improve.

[0004] Therefore, the utility model provides a kind of plastic bag take -up and pay -off mechanism for solving the above problems. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of plastic bag take -up and pay -off mechanism to solve the problems in the above background art.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of plastic bag take -up and pay -off mechanism, including base, support plate, plastic bag, roller assembly, screw rod assembly, compression assembly;

[0007] The support plate is fixedly arranged on the base, and the roller assembly is arranged on the support plate, and the plastic bag is rolled on the roller assembly.

[0008] The screw rod assembly is fixed on the support plate, and the compression assembly is arranged on the screw rod assembly.

[0009] Preferably, the first rod and the second rod of the roller assembly are arranged on the support plate, and the plastic bag is rolled in the first rod and the second rod.

[0010] Preferably, the support plate end side is provided with a reel, one side end of the reel is provided with a transmission motor, the transmission motor drives the reel to rotate counterclockwise, and the reel is nested in the mounting hole on the support plate.

[0011] Preferably, the bidirectional screw rod in the screw rod assembly is matched and connected on the support plate, one side end of the bidirectional screw rod is provided with a forward and reverse motor, the support plate is provided with a clamping hole, and the clamping hole is clamped with a fixing rod.

[0012] Preferably, the telescopic rod in the compression assembly is provided with a clamping protrusion at the end, the clamping protrusion is screwed and connected on the bidirectional screw rod, and the telescopic rod is provided with two clamping sleeves at the lower end.

[0013] Preferably, the clamping sleeve in the compression assembly is provided with a compression block at the end, the compression block is in close contact with the plastic bag, the clamping sleeve is provided with a sleeving hole, and the sleeving hole is clamped with a fixing rod.

[0014] Compared with the prior art, the utility model has the advantages that through the cooperation of the screw rod assembly and the compression assembly, the forward and reverse motor is used for driving the bidirectional screw rod to rotate, the clamping protrusion at the end of the telescopic rod in the compression assembly is screwed and connected on the bidirectional screw rod, the compression structure moves left and right on the bidirectional screw rod to realize compression, when winding, the telescopic rod is driven by the bidirectional screw rod and cooperated with other components to realize accurate adjustment of the up and down positions, the adjusting compression structure can apply appropriate pressure to the plastic bag during the initial winding of the thin plastic bag or the thickness increasing process, and the winding stability is guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the utility model as a whole;

[0016] Figure 2 It is a structural schematic view of the utility model;

[0017] Figure 3 It is a structural disassembly schematic view of the utility model;

[0018] Figure 4 It is a schematic view of the compression assembly of the utility model when it is contracted.

[0019] In the drawing: base 1, support plate 2, plastic bag 3, roller assembly 4, screw rod assembly 5, compression assembly 6, first rod 401, second rod 402, reel 403, transmission motor 404, mounting hole 405, bidirectional screw rod 501, forward and reverse motor 502, clamping hole 503, fixing rod 504, telescopic rod 601, clamping protrusion 602, clamping sleeve 603, compression block 604, sleeving hole 605. PREFERRED EMBODIMENT

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below, and all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0021] Embodiment one: please refer to Figures 1-2 , including base 1, support plate 2, plastic bag 3, roller assembly 4, screw rod assembly 5, compression assembly 6, base 1 is fixedly provided with support plate 2, support plate 2 is provided with roller assembly 4, and plastic bag 3 is rolled on roller assembly 4, screw rod assembly 5 is fixed on support plate 2, and compression assembly 6 is provided on screw rod assembly 5.

[0022] The first bar 401 and the second bar 402 in the roller assembly 4 are arranged on the support plate 2, and the plastic bag 3 is rolled in the first bar 401 and the second bar 402; the support plate 2 is provided with a reel 403 at the end side, the reel 403 is provided with a transmission motor 404 at one end, the transmission motor 404 drives the reel 403 to rotate counterclockwise, and the reel 403 is nested in the mounting hole 405 on the support plate 2.

[0023] When using, the plastic bag 3 is placed on the first bar 401 and the second bar 402 of the roller assembly 4, so that it can freely roll, the transmission motor 404 is started, the transmission motor 404 drives the reel 403 to rotate counterclockwise, at this time, the plastic bag 3 starts to move on the roller assembly 4 and is gradually wound on the reel 403.

[0024] Embodiment two: on the basis of embodiment one, please refer to Figures 2-3 The bidirectional screw rod 501 in the screw rod assembly 5 is adaptively connected on the support plate 2, the bidirectional screw rod 501 is provided with a forward and reverse motor 502 at one end, the support plate 2 is provided with a clamping hole 503, and the clamping hole 503 is clamped with a fixed rod 504 inside.

[0025] When using, when the left and right positions of the compression assembly 6 need to be adjusted, the forward and reverse motor 502 is started, the forward and reverse motor 502 drives the bidirectional screw rod 501 to rotate, because the clamping protrusion 602 at the end of the telescopic rod 601 in the compression assembly 6 is threadedly connected with the bidirectional screw rod 501, and the sleeve hole 605 inside the nesting sleeve 603 is clamped with the fixed rod 504, so that the compression assembly 6 can move left and right on the bidirectional screw rod 501, so that the compression operation on the plastic bag 3 at different positions is realized.

[0026] Embodiment three: on the basis of embodiment two, please refer to Figures 3-4 The end of the nesting sleeve 603 in the compression assembly 6 is provided with a compression block 604, the compression block 604 is in close contact with the plastic bag 3, the nesting sleeve 603 is provided with a sleeve hole 605, and the sleeve hole 605 is clamped with the fixed rod 504 inside.

[0027] In use, during the rolling of the plastic bag 3, if it is necessary to adjust the up-down position of the pressing assembly 6 with the change of the rolling thickness, the bidirectional screw rod 501 is driven to rotate by the forward-reverse motor 502, the telescopic rod 601 is driven to move on the bidirectional screw rod 501, and due to the clamping cooperation between the fixed rod 504 and the sleeve joint hole 605, the two layers of clamping sleeves 603 clamped at the lower end of the telescopic rod 601 can move up and down with the telescopic rod 601, thereby driving the pressing block 604 to move up and down, so that the pressing block 604 can always apply appropriate pressure to the plastic bag 3 during the initial rolling or thickness increase of the thin plastic bag 3, and the stability of the rolling is ensured.

[0028] Although the embodiments of the present application have been shown and described, it should be understood by those ordinary skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A plastic bag roll winding and unwinding mechanism characterized by: Including base (1), support plate (2), plastic bag (3), roller assembly (4), screw rod assembly (5), compression assembly (6); The support plate (2) is fixedly provided on the base (1), and the roller assembly (4) is arranged on the support plate (2); the plastic bag (3) is rolled on the roller assembly (4); The screw rod assembly (5) is fixed on the support plate (2), and the compression assembly (6) is arranged on the screw rod assembly (5).

2. A plastic bag roll take-up mechanism according to claim 1, wherein: The first rod (401) and the second rod (402) in the roller assembly (4) are arranged on the support plate (2), and the plastic bag (3) is rolled in the first rod (401) and the second rod (402).

3. A plastic bag roll take-up mechanism according to claim 2, wherein: The support plate (2) is provided with a reel (403) at one end, and the reel (403) is provided with a transmission motor (404) at one end, the transmission motor (404) drives the reel (403) to rotate counterclockwise, and the reel (403) is nested in the mounting hole (405) on the support plate (2).

4. A plastic bag roll winding and unwinding mechanism according to claim 1, characterized in that: The bidirectional screw rod (501) in the screw rod assembly (5) is adaptively connected to the support plate (2), and the bidirectional screw rod (501) is provided with a forward and reverse motor (502) at one end, the support plate (2) is provided with a clamping hole (503), and the clamping hole (503) is clamped with a fixed rod (504) inside.

5. A plastic bag roll winding and unwinding mechanism according to claim 1, characterized in that: The telescopic rod (601) in the compression assembly (6) is provided with a clamping protrusion (602) at one end, the clamping protrusion (602) is screw-connected to the bidirectional screw rod (501), and the telescopic rod (601) is embedded with two layers of embedded sleeves (603) at the lower end.

6. A plastic bag roll take-up mechanism according to claim 5 wherein: The embedded sleeve (603) in the compression assembly (6) is provided with a compression block (604) at one end, the compression block (604) is in close contact with the plastic bag (3), the embedded sleeve (603) is provided with a sleeve hole (605), and the sleeve hole (605) is clamped with a fixed rod (504) inside.

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