Bag opening infolding positioning device

Abstract

The utility model belongs to the technical field of packaging bag processing, and particularly discloses a bag opening infolding positioning device. Comprising a base, a base, a sliding plate, a positioning block and a driving assembly. The base is mounted on the base; the two sets of sliding plates are slidably installed on the base and symmetrically located on the two sides of the base correspondingly. The two groups of positioning blocks are respectively connected with the corresponding sliding plates; the driving assembly comprises a rotating disc, two driving rods and a driving source, the driving source is installed on the base, and the output end of the driving source is connected with the rotating disc; the rotating disc is rotatably installed on the base, one ends of the two sets of driving rods are hinged to the rotating disc, and the other ends of the two sets of driving rods are hinged to the two sets of sliding plates respectively. The symmetrically-arranged positioning blocks are driven by the driving source, so that the positioning blocks are close to or far away from each other, the two positioning blocks are synchronously separated from or abut against the inner wall of the opening of the packaging bag, and the production cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of packaging bag processing, and in particular relates to a bag opening inner fold positioning device. Background Art

[0002] Packaging bags are used to pack various items, making it easy to transport and store goods during production and circulation. They are widely used in daily life and industrial production. According to the production process, they are often divided into plastic packaging bags and composite packaging bags. Plastic packaging bags are further divided into plastic woven bags and plastic film bags. With the continuous development of science and technology, plastic woven bags are gradually used in various fields due to their low cost and high tensile strength.

[0003] Plastic woven bags are made of polypropylene as the main raw material, which is extruded and stretched into flat yarns, and then woven, braided, and bagged. In order to facilitate the opening of the plastic woven bag, prevent the burrs from scratching the user when opening the bag, and prevent the bag from being easily torn after loading heavy objects, the bag mouth is folded inwards for a week during the processing of the woven bag, and then hot-pressed to solve the above problems.

[0004] For example, patent authorization number CN220349190U discloses an inner roll forming device for the mouth of a packaging bag, including a base, two support plates are fixedly installed on the top and left sides of the base, a positioning mechanism is arranged inside the left and right support plates as a whole, a flipping mechanism is arranged at the output end of the positioning mechanism, an extension mechanism is arranged on the top of the base, a thermosetting mechanism is arranged at the output end of the extension mechanism, and the thermosetting mechanism includes a positioning frame, an extension plate, a return spring, a stop plate and a heating plate, a positioning frame is fixedly installed on the rear side of the support plate as a whole, and an extension plate is movably installed inside the positioning frame. The inner roll forming device for the mouth of a packaging bag realizes the rapid flip forming of the mouth of a woven packaging bag through the arrangement of a thermosetting mechanism, a positioning mechanism, a flipping mechanism and an extension mechanism, thereby improving the overall use quality of the woven packaging bag and avoiding damage to the user caused by the rough edges of the bag mouth. However, there are the following problems: its positioning mechanism adopts multiple power drives, which not only consumes a lot of energy, but also the two left and right positioning mechanisms cannot completely contact the inner wall of the packaging bag synchronously. Utility Model Content

[0005] The utility model aims to overcome the defects of the prior art and provide a bag mouth inner fold positioning device to solve the problem that multiple power drives are used in the bag mouth inner fold positioning process of woven packaging bags, which not only consumes high energy but also causes the positioning mechanisms to be asynchronous.

[0006] The specific technical solutions are as follows:

[0007] A bag opening inner fold positioning device, comprising:

[0008] Base;

[0009] A base, mounted on the base;

[0010] Two sets of sliding plates are slidably mounted on the base, and the two sets of sliding plates are symmetrically located on both sides of the base;

[0011] Two groups of positioning blocks, the two groups of positioning blocks are respectively connected to the corresponding sliding plates; and

[0012] A driving assembly, comprising a rotating disk, two sets of driving rods and a driving source, wherein the driving source is mounted on the base; the rotating disk is rotatably mounted on the base, and the output end of the driving source is connected to the rotating disk; one end of the two sets of driving rods is respectively hinged to the rotating disk, and the other end of the two sets of driving rods is respectively hinged to the two sets of sliding plates;

[0013] The driving source drives the rotating disk to rotate, and the rotating disk pulls the sliding plate to move through the driving rod, so that the two groups of positioning blocks are moved closer to or away from each other, thereby leaving or aligning the bag opening of the packaging bag.

[0014] In one embodiment, the positioning block includes a connecting plate and a positioning block body, one end of the connecting plate is connected to the corresponding sliding plate, and the other end is fixedly connected to the positioning block body, and the positioning block body is U-shaped.

[0015] In one of the embodiments, a stopper is provided at the port where the positioning block body contacts the inner wall of the packaging bag.

[0016] In one embodiment, two groups of driving rods are symmetrically hingedly mounted on the diameter of the rotating disk.

[0017] In one of the embodiments, a sliding block is provided on the upper surface of the base, a corresponding sliding groove is provided at the bottom of the sliding plate, and the sliding plate moves in a directional manner along the sliding block.

[0018] Beneficial effects of the utility model:

[0019] The above-mentioned bag mouth inner fold positioning device arranges positioning blocks and a driving assembly on the base, and uses a driving source to drive the symmetrically arranged positioning blocks to move closer or farther away, so that the two positioning blocks synchronously contact or separate from the inner wall of the bag mouth of the packaging bag, thereby reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation of the utility model, the following will briefly introduce the drawings required for use in the specific implementation. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0021] Figure 1This is a schematic structural diagram of the inner-fold positioning device for the bag mouth of the present utility model;

[0022] Figure 2 This is a schematic structural diagram of the positioning block.

[0023] Reference numerals:

[0024] 1 - Base, 11 - Fixed column, 12 - Slide block, 13 - Bracket, 2 - Base, 3 - Slide plate, 31 - Chute, 4 - Positioning block, 41 - Connecting plate, 42 - Positioning block body, 421 - Stopper, 422 - Groove,

[0025] 5 - Driving assembly, 51 - Rotating disk, 52 - Two groups of driving rods, 53 - Driving source, 511 - Rotating shaft. Detailed implementation manners

[0026] Hereinafter, embodiments of the technical solution of the present utility model will be described in detail with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present utility model, so they are only examples and cannot be used to limit the protection scope of the present utility model.

[0027] Please refer to Figure 1 and Figure 2 , in one embodiment, an inner-fold positioning device for the bag mouth includes: a base 1, a base 2, a slide plate 3, a positioning block 4, and a driving assembly 5.

[0028] In one embodiment, the base 1 is installed on an external linear guide rail to realize the forward and backward displacement of the whole device. A plurality of fixed columns 11 with the same height are installed on the base 1, and the base 2 is installed at the top of the fixed columns 11, and the base 2 is parallel to the base 1.

[0029] In one embodiment, the slide plate 3 is slidably installed on the base 1, and there are two groups of slide plates 3, which are symmetrically arranged on both sides of the base 2 respectively. Preferably, in order to make the slide plate 3 slide stably and directionally on the base 1, two groups of slide blocks 12 are provided on the base 1, and corresponding chutes 31 are provided at the bottom of the slide plate 3, and the slide plate 3 slides directionally along the slide blocks 12.

[0030] In one embodiment, there are two groups of positioning blocks 4, and each group of positioning blocks 4 is connected to the adjacent corresponding slide plate 3.

[0031] Please refer to Figure 2 , specifically, the positioning block 4 includes a connecting plate 41 and a positioning block body 42. One end of the connecting plate 41 is connected to the slide plate 3, and the other end of the connecting plate 41 is fixedly connected to the positioning block body 42. The outer shape of the positioning block body 42 is in a U shape, and a groove 422 is formed between the inner walls of the positioning block body 42. The groove 422 enables the external folding plate to move towards the positioning block body 42, and the folding plate enters the groove 422, and the bag mouth is folded inward in the groove 422.

[0032] On the basis of the above embodiment, in order to prevent the positioning block body 42 from easily cracking the packaging bag, a stopper 421 is provided at the port where the positioning block body 42 contacts the inner wall of the packaging bag. Preferably, there are two groups of stoppers 421, and a gap is provided between the two groups of stoppers 421 to allow the hemming plate to enter when the bag mouth is hemmed.

[0033] In one embodiment, the driving assembly 5 includes a rotating disk 51 , two sets of driving rods 52 and a driving source 53 .

[0034] Specifically, a bracket 13 is provided at the bottom of the base 1, and a driving source 53 is fixedly mounted on the bracket 13. Preferably, the driving source 53 is a motor. The rotating disk 51 is rotatably mounted on the base 2. The base 1 and the base 2 are respectively provided with coaxial through holes. The rotating shaft 511 is sleeved in the through holes of the base 1 and the base 2. One end of the rotating shaft 511 passes through the through hole of the base 2 and is connected to the rotating disk 51, and the other end of the rotating shaft 511 is connected to the output end of the driving source 53. There are two groups of driving rods 52. One end of each group of driving rods 52 is hinged to the rotating disk 51, and the other end of the driving rod 52 is hinged to the corresponding sliding plate 3. Preferably, the two groups of driving rods 52 are symmetrically hinged and mounted on the diameter of the rotating disk 51. When in use, the motor is started, the motor rotates, and the motor drives the rotating disk 51 to rotate. The rotating disk 51 drives the sliding plate 3 to slide to both sides through the driving rod 52, so that the two groups of positioning blocks 4 are away from each other, and the positioning blocks 4 are against the bag opening of the packaging bag to complete the positioning of the bag opening of the packaging bag. When the two sets of positioning blocks need to leave the bag opening, start the motor to reverse.

[0035] When in use, first use the external vacuum suction cup to open the bag, and move the packaging bag with the bag opening opened to the front side of the positioning block 4, start the external linear guide rail to move the base 1 and enter the interior of the woven packaging bag. At this time, start the motor, the motor rotates, and the motor drives the rotating disk 51 to rotate. The rotating disk 51 drives the sliding plate 3 to slide to both sides through the driving rod 52, so that the two groups of positioning blocks 4 move toward the inner wall of the bag opening until the positioning blocks 4 are against the two sides of the bag opening of the packaging bag, completing the positioning of the bag opening of the packaging bag, and entering the next packaging bag processing step.

[0036] Beneficial effects of the utility model:

[0037] The above-mentioned bag mouth inner fold positioning device is provided with positioning blocks 4 and driving components 5 on the base 1, and a driving source 53 is used to drive the symmetrically arranged positioning blocks 4, so that the positioning blocks 4 are close to or away from each other, so that the two positioning blocks 4 synchronously contact or separate from the inner wall of the bag mouth of the packaging bag, and multiple driving sources are not required to drive the positioning blocks on both sides to move, thereby reducing the production cost. A stopper 421 is provided at the port where the positioning block 4 contacts the inner wall of the packaging bag to prevent the positioning block 4 from easily cracking the packaging bag when it moves toward the bag mouth.

[0038] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A bag opening inner fold positioning device, characterized in that: include: Base; A base, mounted on the base; Two sets of sliding plates are slidably mounted on the base, and the two sets of sliding plates are symmetrically located on both sides of the base; Two groups of positioning blocks, the two groups of positioning blocks are respectively connected to the corresponding sliding plates; and A driving assembly, comprising a rotating disk, two sets of driving rods and a driving source, wherein the driving source is mounted on the base; the rotating disk is rotatably mounted on the base, and the output end of the driving source is connected to the rotating disk; one end of the two sets of driving rods is respectively hinged to the rotating disk, and the other end of the two sets of driving rods is respectively hinged to the two sets of sliding plates; The driving source drives the rotating disk to rotate, and the rotating disk pulls the sliding plate to move through the driving rod, so that the two groups of positioning blocks are moved closer to or away from each other, thereby leaving or aligning the bag opening of the packaging bag.

2. The bag opening inner fold positioning device according to claim 1, characterized in that: The positioning block includes a connecting plate and a positioning block body. One end of the connecting plate is connected to the corresponding sliding plate, and the other end is fixedly connected to the positioning block body. The positioning block body is in a U-shape.

3. The bag opening inner fold positioning device according to claim 2, characterized in that: A stopper is provided at the port where the positioning block body contacts the inner wall of the packaging bag.

4. The bag opening inner fold positioning device according to claim 1, characterized in that: The two groups of driving rods are symmetrically hingedly installed on the diameter of the rotating disk.

5. The bag opening inner fold positioning device according to claim 1, characterized in that: A sliding block is provided on the upper surface of the base, a corresponding sliding groove is provided at the bottom of the sliding plate, and the sliding plate moves along the sliding block in a directional manner.

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