A kind of unwinding device for packaging bag production

Abstract

The utility model discloses a kind of unwinding device for packaging bag production, including fixed frame, the position of fixed frame near top end is equipped with connecting shaft, and unwinding roller is detachably connected on connecting shaft;Connecting shaft circumferential side wall is equipped with mounting groove, and mounting groove is equipped with shaft, and limit post is rotatably connected on shaft, and the position of unwinding roller side wall near both ends is equipped with limit slot, and limit post is engagedly connected with limit slot. In conclusion, the utility model overcomes the deficiencies of prior art, and the design is reasonable, the unwinding roller is convenient to install and disassemble, the production efficiency of packaging bag can be improved, and has higher social use value and application prospect.

Description

Technical Field

[0001] This utility model relates to the field of packaging bag production technology, and in particular to an unwinding device for packaging bag production. Background Technology

[0002] Packaging bags are commonly used packaging materials in the food industry. Packaging bags are usually made by heat-sealing packaging film. After the packaging film is prepared, it is usually unwound by an unwinding roller. Before unwinding, the unwinding roller needs to be installed. When enough packaging film has been unwound, the unwinding roller needs to be removed and replaced. However, in the existing technology, the installation and removal of the unwinding roller is inconvenient and time-consuming, which greatly affects the production efficiency of packaging bags. In order to solve the above problems, an unwinding device for packaging bag production that facilitates the replacement of the unwinding roller is provided. Utility Model Content

[0003] In order to solve the problems mentioned in the background art, the present invention provides an unwinding device for packaging bag production.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A packaging bag production unwinding device includes a fixed frame, a connecting shaft near the top of the fixed frame, and an unwinding roller detachably connected to the connecting shaft; the circumferential side wall of the connecting shaft has an installation groove, a rotating shaft is provided in the installation groove, a limit post is rotatably connected to the rotating shaft, and the side wall of the unwinding roller has a limit groove near both ends, and the limit post is engaged with the limit groove.

[0006] Preferably, the fixing frame is located below the unwinding roller and is rotatably connected to the driving roller and the driven roller, and the packaging bag film passes between the driving roller and the driven roller.

[0007] Preferably, a fixing sleeve is threaded onto the side wall of the connecting shaft.

[0008] Preferably, a second fixing sleeve is threaded onto the circumferential sidewall of the unwinding roller.

[0009] Preferably, the driving roller and the driven roller are connected by a gear pair.

[0010] Preferably, a torsion spring is sleeved on the rotating shaft, and the movable end of the torsion spring is fixedly connected to the side wall of the limiting post.

[0011] Preferably, the side wall of the fixed frame is provided with a sliding rod, and a sliding block is symmetrically slidably connected to the sliding rod. The sliding rod can be fixed to the sliding rod by a locking bolt. A first connecting rod is provided on the top of the sliding block, and a first correction element is provided on the first connecting rod above the driving roller and the driven roller.

[0012] Preferably, the bottom end of the sliding block is provided with a second connecting rod, and the second connecting rod is provided with a correction frame.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. Place the packaging film on the unwinding roller, place the unwinding roller between the connecting shafts, and align the mounting groove with the limiting groove. Rotate the limiting post to engage the limiting post with the limiting groove. At this time, the unwinding roller can be fixed. When replacing, move the fixing sleeve and the second fixing sleeve away from the limiting post. The torsion spring's restoring force can drive the limiting post to rotate away from the limiting groove. At this time, the unwinding roller can be removed and replaced, which facilitates the replacement of the unwinding roller and improves the efficiency of packaging bag production.

[0015] 2. After the film on the unwinding roller is corrected by the first correction component, it passes through the active roller and the driven roller, and then passes through the correction frame for further correction, so as to prevent the packaging bag film from shifting during the unwinding process.

[0016] In summary, this utility model overcomes the shortcomings of the prior art, has a reasonable design, and is easy to install and disassemble through the unwinding roller, which can improve the production efficiency of packaging bags and has high social use value and application prospects. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0020] Figure 3 This is a front view of the overall structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the unwinding roller structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the fixing sleeve structure of this utility model;

[0023] Figure 6 For the present utility model Figure 3 Enlarged view of the structure at point A in the middle.

[0024] In the diagram: 1. Fixed frame; 2. Connecting shaft; 3. Unwinding roller; 4. Sliding rod; 22. Mounting groove; 221. Rotating shaft; 222. Torsion spring; 23. Limiting post; 24. Fixed sleeve; 31. Limiting groove; 32. Second fixed sleeve; 401. Driven roller; 402. Gear pair; 403. Motor; 404. Sliding block; 41. First connecting rod; 421. First correction component; 421. Second connecting rod; 43. Correction frame; 431. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] Example 1

[0027] Reference Figure 1-6 A packaging bag production unwinding device includes a fixed frame 1, a connecting shaft 2 is provided near the top of the fixed frame 1, and an unwinding roller 3 is detachably connected to the connecting shaft 2.

[0028] The fixed frame 1 is located below the unwinding roller 3 and is rotatably connected to the drive roller 401 and the driven roller 402. The packaging bag film passes between the drive roller 401 and the driven roller 402, and the unwinding is completed by the rotation of the drive roller 401 and the driven roller 402.

[0029] The connecting shaft 2 has a mounting groove 22 on its circumferential side wall. A rotating shaft 221 is provided in the mounting groove 22. A limiting post 23 is rotatably connected to the rotating shaft 221. A limiting groove 31 is provided on the side wall of the unwinding roller 3 near both ends. The limiting post 23 is engaged with the limiting groove 31. The packaging bag film is placed on the unwinding roller 3, the unwinding roller is placed between the connecting shafts 2, and the mounting groove 22 and the limiting groove 31 are aligned. The limiting post 23 is rotated to engage with the limiting groove 31, thus fixing the unwinding roller 3.

[0030] Furthermore, a fixing sleeve 24 is threaded onto the side wall of the connecting shaft 2. Rotating the fixing sleeve 24 moves it to the limiting post 23, which can limit the limiting post 23, so that the limiting post 23 engages and is fixed with the limiting groove 31, thus fixing the unwinding roller 3 on the connecting shaft 2.

[0031] Furthermore, a second fixing sleeve 32 is threaded onto the circumferential side wall of the unwinding roller 3. Rotating the second fixing sleeve 32 moves it into the limiting groove 31. When the limiting post 23 engages with the limiting groove 31, the limiting post 23 and the limiting groove 31 are further fixed, so that the unwinding roller 3 will not be damaged or fall off during unwinding.

[0032] Furthermore, the active roller 401 and the driven roller 402 are connected by a gear pair 403. A motor 404 is provided on the side wall of the fixed frame 1. Starting the motor 404 can drive the active roller 401 to rotate. The active roller 401 and the driven roller 402 are connected by a gear pair 403 so that the active roller 401 and the driven roller 402 rotate in opposite directions at the same speed, thereby realizing the unwinding of the packaging bag film on the unwinding roller 3.

[0033] Furthermore, a torsion spring 222 is sleeved on the rotating shaft 221, and the movable end of the torsion spring 222 is fixedly connected to the side wall of the limiting post 23.

[0034] The side wall of the fixed frame 1 is provided with a sliding rod 4, and a sliding block 41 is symmetrically slidably connected to the sliding rod 4. The sliding rod 4 can be fixed to the sliding rod 4 by a locking bolt 411. A first connecting rod 42 is provided at the top of the sliding block 41. A first correction element 421 is provided on the first connecting rod 42 above the driving roller 401 and the driven roller 402. A second connecting rod 43 is provided at the bottom of the sliding block 41. A correction frame 431 is provided on the second connecting rod 43. After the film on the unwinding roller 3 is corrected by the first correction element 421, it passes through the driving roller 401 and the driven roller 402, and then passes through the correction frame 431 for further correction, so as to prevent the packaging bag film from shifting during the unwinding process.

[0035] Working principle: Place the packaging bag film on the unwinding roller 3, place the unwinding roller between the connecting shafts 2, align the mounting groove 22 with the limiting groove 31, rotate the limiting post 23 to engage with the limiting groove 31, and at this time the unwinding roller 3 can be fixed.

[0036] Rotating the fixed sleeve 24 to move to the limiting post 23 can limit the limiting post 23, so that the limiting post 23 is engaged and fixed with the limiting groove 31, and the unwinding roller 3 is fixed on the connecting shaft 2.

[0037] Rotate the second fixing sleeve 32 to move it into the limiting groove 31. When the limiting post 23 is engaged with the limiting groove 31, further fix the limiting post 23 and the limiting groove 31 so that the unwinding roller 3 will not be damaged or fall off during unwinding.

[0038] The starter motor 404 can drive the drive roller 401 to rotate. The drive roller 401 and the driven roller 402 are connected by the gear pair 403, which enables the drive roller 401 and the driven roller 402 to rotate in opposite directions at the same speed, thereby realizing the unwinding of the packaging bag film on the unwinding roller 3.

[0039] After the film on the unwinding roller 3 is corrected by the first correction element 421, it passes through the active roller 401 and the driven roller 402, and then passes through the correction frame 431 for further correction, so as to prevent the packaging bag film from shifting during the unwinding process.

[0040] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "join," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An unwinding device for packaging bag production, characterized in that, include A fixed frame (1) is provided with a connecting shaft (2) near the top of the fixed frame (1), and an unwinding roller (3) is detachably connected to the connecting shaft (2). The connecting shaft (2) has a mounting groove (22) on its circumferential sidewall. A rotating shaft (221) is provided in the mounting groove (22). A limiting post (23) is rotatably connected on the rotating shaft (221). A limiting groove (31) is provided on the sidewall of the unwinding roller (3) near both ends. The limiting post (23) is engaged with the limiting groove (31).

2. The unwinding device for packaging bag production according to claim 1, characterized in that: The fixed frame (1) is located below the unwinding roller (3) and is rotatably connected to the active roller (401) and the driven roller (402). The packaging bag film passes between the active roller (401) and the driven roller (402).

3. The unwinding device for packaging bag production according to claim 1, characterized in that: A fixing sleeve (24) is threaded onto the side wall of the connecting shaft (2).

4. The unwinding device for packaging bag production according to claim 1, characterized in that: The unwinding roller (3) has a second fixing sleeve (32) threadedly connected to its circumferential sidewall.

5. The unwinding device for packaging bag production according to claim 2, characterized in that: The driving roller (401) and the driven roller (402) are connected by a gear pair (403).

6. The unwinding device for packaging bag production according to claim 1, characterized in that: A torsion spring (222) is sleeved on the rotating shaft (221), and the movable end of the torsion spring (222) is fixedly connected to the side wall of the limiting post (23).

7. The unwinding device for packaging bag production according to claim 1, characterized in that: The side wall of the fixed frame (1) is provided with a sliding rod (4), and a sliding block (41) is symmetrically slidably connected on the sliding rod (4). The sliding rod (4) can be fixed to the sliding rod (4) by a locking bolt (411). The top of the sliding block (41) is provided with a first connecting rod (42), and a first correction element (421) is provided on the first connecting rod (42) above the driving roller (401) and the driven roller (402).

8. The unwinding device for packaging bag production according to claim 7, characterized in that: The bottom end of the sliding block (41) is provided with a second connecting rod (43), and the second connecting rod (43) is provided with a correction frame (431).

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