Following edge folding mechanism for packaging bag

Abstract

The utility model discloses a packaging bag following edge folding mechanism, which belongs to the technical field of packaging equipment and comprises an edge folding push plate, a first driving mechanism for driving the edge folding push plate to synchronously move along with the conveying direction of a packaging bag, and a second driving mechanism for driving the edge folding push plate to finish edge folding action on the packaging bag, the second driving mechanism comprises a horizontal driving assembly and a vertical driving assembly, the horizontal driving assembly drives the edge folding push plate to move horizontally so that the bag opening of the packaging bag can be bent transversely, and the vertical driving assembly drives the edge folding push plate to move vertically so that the bag opening of the packaging bag in the transversely-bent state can be bent vertically. The edge folding mechanism and the edge folding mode are improved, so that the edge folding mechanism and the packaging bag are kept relatively static, the problem that the edge folding quality of a bag opening is poor due to friction force in a traditional edge folding mode is solved, and the edge folding effect of the bag opening and the follow-up packaging bag sewing quality are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a folding mechanism, in particular to a packaging bag following folding mechanism. BACKGROUND

[0002] In the packaging bag production process, there is a process of folding and sewing the opening of the packaging bag. The existing folding and sewing equipment works as follows: the folding mechanism is stationary, and the packaging bag is conveyed to the folding station of the equipment. In the folding process, the packaging bag is conveyed and folded at the same time. For example, the existing patent CN202744773U discloses a folding and sewing machine, wherein the inner folding edge plate is fixedly arranged. After the packaging bag enters the folding machine, the streamlined transition of the inner folding edge plate makes the packaging bag naturally bend and fold during the advancing process.

[0003] However, this folding method has the following disadvantages: in the folding process, the bag opening of the packaging bag will hard rub against the blocking edge, which will cause the bag opening of the packaging bag to wrinkle, be damaged, and be uneven after folding, and even cause the machine to stop during the folding process because the bag opening is hung on the mechanical parts. Finally, the sewing of the bag opening of the packaging bag does not meet the standard, and the material is also easy to scatter.

[0004] In addition, the existing packaging bag folding mechanism also has certain requirements for the hardness of the packaging bag. For packaging bags with soft material, the traditional folding method will cause the bag opening to wrinkle due to friction, and accumulate into a lump, which will affect the normal operation of the machine.

[0005] Therefore, in view of the above problems existing in the current packaging bag folding structure design and folding method, the present scheme is proposed. CONTENT OF THE UTILITY MODEL

[0006] The utility model aims at solving the problem that the folding mechanism in the prior art is designed unreasonably, which causes the bag opening of the packaging bag to be poor in quality after folding due to friction, and affects the subsequent sewing process and even the quality of the finished packaging bag. A packaging bag following folding mechanism is proposed, which can complete folding while maintaining a relatively stationary state with the packaging bag during the folding process, solve a series of problems caused by friction during the folding process, and improve the folding quality.

[0007] In order to achieve the above-mentioned utility model purposes, the technical scheme of the utility model is as follows:

[0008] The application discloses a packaging bag following edge folding mechanism, which comprises an edge folding push plate, a first driving mechanism for driving the edge folding push plate to move synchronously along the conveying direction of the packaging bag and a second driving mechanism for driving the edge folding push plate to complete the edge folding action of the packaging bag.

[0009] Further, the first driving mechanism comprises a first sliding member and a first power device for driving the first sliding member to move linearly reciprocatingly in the horizontal direction; the edge folding push plate and the second driving mechanism are both mounted on the first sliding member of the first driving mechanism.

[0010] Further, the horizontal driving assembly is mounted on the first sliding member of the first driving mechanism, the vertical driving assembly is integrally connected with the edge folding push plate on the horizontal driving assembly and is driven by the horizontal driving assembly to move in the horizontal direction; the edge folding push plate is mounted on the vertical driving assembly and is driven by the vertical driving assembly to move in the vertical direction.

[0011] Further, the vertical driving assembly is mounted on the first sliding member of the first driving mechanism, the horizontal driving assembly is integrally connected with the edge folding push plate on the vertical driving assembly and is driven by the vertical driving assembly to move in the vertical direction; the edge folding push plate is mounted on the horizontal driving assembly and is driven by the horizontal driving assembly to move in the horizontal direction.

[0012] Further, the horizontal driving assembly comprises a horizontal moving member and a third power device for driving the horizontal moving member to move linearly reciprocatingly in the horizontal direction; the edge folding push plate and the vertical driving assembly are connected on the horizontal moving member.

[0013] Further, the vertical driving assembly comprises a vertical moving member and a second power device for driving the vertical moving member to move linearly reciprocatingly in the vertical direction; the edge folding push plate and the horizontal driving assembly are connected on the vertical moving member.

[0014] Further, the edge folding push plate is arranged in parallel with the packaging bag, and the length of the edge folding push plate is designed to be the same as the width of the packaging bag.

[0015] Further, the packaging bag following edge folding mechanism further comprises front and rear blocking edges arranged oppositely on both sides of the conveying channel of the packaging bag and used for cooperating with the edge folding; the length direction of the front and rear blocking edges is parallel with the conveying direction of the packaging bag.

[0016] Further, the first driving mechanism is a pneumatic slide module, a linear motor or a synchronous belt driving mechanism.

[0017] Further, the horizontal drive assembly is a cylinder or a screw rod, and the vertical drive assembly is a linear telescopic electric cylinder, a linear electric push rod or a telescopic cylinder.

[0018] The working principle and process of the utility model are as follows:

[0019] Firstly, the packaging bag is uniformly conveyed to the edge folding station along the production line; then, the first driving mechanism drives the edge folding push plate and the second driving mechanism to move synchronously with the packaging bag, in the following movement process, the horizontal drive assembly acts to drive the edge folding push plate to move horizontally to make the packaging bag mouth horizontally fold; immediately, the vertical drive assembly acts, the edge folding push plate moves downward to fold the horizontally folded packaging bag mouth vertically, thus the edge folding is completed, the edge folded packaging bag keeps the edge folding state under the action of the shaping piece and is conveyed to the next process; finally, the vertical drive assembly and the horizontal drive assembly act to drive the edge folding push plate to return to the original position, at the same time, the first driving mechanism drives the edge folding push plate and the second driving mechanism to return to the original position as a whole, and the above process is repeated to continuously complete the edge folding of the packaging bag on the conveying line.

[0020] In summary, the utility model has the following advantages:

[0021] 1. The edge folding mechanism of the utility model can keep synchronous movement with the packaging bag, and in the following movement process with the packaging bag, the horizontal drive assembly, the vertical drive assembly and the edge folding push plate are matched to complete the edge folding of the packaging bag mouth, since the packaging bag can keep relatively static in the edge folding process, the problem of poor quality of the bag mouth edge folding caused by friction in the traditional edge folding form is overcome, thereby the edge folding effect of the bag mouth and the subsequent packaging bag sewing quality are improved;

[0022] 2. In the utility model, the front and rear blocking edges are matched to keep the packaging bag mouth part straight to facilitate the subsequent smooth edge folding; meanwhile, the rear blocking edge can also be used as an edge folding shaping piece to make the packaging bag mouth fold and form with the blocking edge;

[0023] 3. The edge folding structure and the edge folding mode adopted in the utility model scheme have low requirements on the material quality of the packaging bag, can be applied to the packaging bag with soft material, and expand the application range of the product;

[0024] 4. The utility model has simple structure and convenient control, can continuously and quickly fold the packaging bag on the conveying line, and improves the production efficiency of the packaging bag line automatic production line. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is an initial position relation diagram of the edge folding push plate and the packaging bag of the utility model;

[0026] Figure 2 It is a position relation diagram of the edge folding push plate horizontally folding the packaging bag of the utility model;

[0027] Figure 3 It is the position relation schematic view of the edge folding push plate vertical folding packaging bag of the utility model;

[0028] Figure 4 It is the front view of the edge folding mechanism of the utility model and the packaging bag cooperation use;

[0029] In the figure,

[0030] 1, packaging bag, 2, first sliding member, 3, second power device, 4, third power device, 5, edge folding push plate, 6, front baffle, 7, rear baffle, 8, mounting plate, 9, horizontal moving part, 10, first power device, 11, edge pressing mechanism. DETAILED DESCRIPTION

[0031] The technical scheme of the utility model will be described clearly and completely in combination with the drawings, obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative labor belong to the scope of the utility model protection.

[0032] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relationship based on the shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore, it cannot be understood as the limitation of the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0033] In the description of the utility model, it needs to be explained that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection. For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0034] In addition, the technical features involved in different embodiments of the utility model described below can be combined with each other as long as there is no conflict between them.

[0035] Embodiment 1

[0036] As the most basic embodiment of the utility model, the embodiment provides a packaging bag edge folding mechanism, like Figure 1As shown, the folding edge pushing plate 5, the first driving mechanism for driving the folding edge pushing plate 5 to move synchronously with the conveying direction of the packaging bag 1, and the second driving mechanism for driving the folding edge pushing plate 5 to complete the folding edge action on the packaging bag 1, the second driving mechanism comprises a horizontal driving assembly and a vertical driving assembly, the horizontal driving assembly drives the folding edge pushing plate 5 to move horizontally to make the bag opening of the packaging bag 1 horizontally bent, and the vertical driving assembly drives the folding edge pushing plate 5 to move vertically to make the bag opening of the packaging bag 1 in the horizontally bent state vertically bent.

[0037] The first driving mechanism can drive the folding edge pushing plate 5 to move synchronously with the packaging bag 1, so that the folding edge mechanism and the packaging bag 1 remain relatively stationary, and the horizontal driving assembly and the vertical driving assembly are sequentially matched to complete the folding edge of the bag opening of the packaging bag 1 during the movement of the folding edge pushing plate 5 with the packaging bag 1, thereby overcoming the problem of poor bag opening folding edge quality caused by friction in the traditional folding edge form, and improving the folding edge effect of the bag opening and the subsequent packaging bag 1 stitching quality. Moreover, the folding edge mode of the present application has low requirements on the material quality of the packaging bag 1, and is also suitable for packaging bags 1 with soft material.

[0038] The working principle and process of the utility model are as follows:

[0039] Firstly, the packaging bag 1 is uniformly conveyed to the folding edge station along the production line; then, the first driving mechanism drives the folding edge pushing plate 5 and the second driving mechanism to move synchronously with the packaging bag 1, during the synchronous movement, the horizontal driving assembly acts to drive the folding edge pushing plate 5 to move horizontally to make the bag opening of the packaging bag 1 horizontally bent; immediately, the vertical driving assembly acts, the folding edge pushing plate 5 moves downward to vertically bend the bag opening of the packaging bag 1 in the horizontally bent state, so that the folding edge is completed, and the packaging bag 1 after the folding edge is conveyed to the next process under the shaping action of the edge pressing mechanism 11; finally, the vertical driving assembly and the horizontal driving assembly act to drive the folding edge pushing plate 5 to return to the original position, at the same time, the first driving mechanism drives the folding edge pushing plate 5 and the second driving mechanism to return to the original position as a whole, and the above process is repeated to continuously complete the folding edge of the packaging bag 1 on the conveying line.

[0040] Embodiment 2

[0041] As a preferred embodiment of the utility model, the present embodiment provides a packaging bag following folding edge mechanism, as shown in the accompanying drawings, Figures 1 to 4 As shown, the folding edge pushing plate 5, the first driving mechanism for driving the folding edge pushing plate 5 to move synchronously with the conveying direction of the packaging bag 1, and the second driving mechanism for driving the folding edge pushing plate 5 to complete the folding edge action on the packaging bag 1.

[0042] The second driving mechanism comprises a horizontal driving assembly and a vertical driving assembly, the horizontal driving assembly drives the horizontal movement of the folding push plate 5 to horizontally fold the bag opening of the packaging bag 1, and the vertical driving assembly drives the vertical movement of the folding push plate 5 to vertically fold the horizontally folded bag opening of the packaging bag 1.

[0043] Further, the first driving mechanism comprises a first sliding member 2 and a first power device 10 for driving the first sliding member 2 to move linearly in the horizontal direction, and the folding push plate 5 and the second driving mechanism are both mounted on the first sliding member 2 of the first driving mechanism, and are driven by the first driving mechanism to move linearly in the horizontal direction. In this embodiment, the first driving mechanism can adopt a pneumatic slide module, a linear motor, a synchronous belt transmission mechanism or other devices capable of realizing linear reciprocating transmission.

[0044] In specific implementation, the horizontal driving assembly is mounted on the first sliding member 2 of the first driving mechanism, and the vertical driving assembly is connected with the folding push plate 5 as a whole on the horizontal driving assembly and is driven by the horizontal driving assembly to move in the horizontal direction; the folding push plate 5 is mounted on the vertical driving assembly and is driven by the vertical driving assembly to move in the vertical direction, so as to complete the folding process of the bag opening of the packaging bag 1 from horizontal folding to vertical folding.

[0045] Further, the horizontal driving assembly comprises a horizontal moving member 9 and a third power device 4 for driving the horizontal moving member 9 to move linearly in the horizontal direction. The folding push plate 5 and the vertical driving assembly are connected as a whole on the horizontal moving member 9 and move synchronously with the horizontal moving member 9 to complete the horizontal folding action. In this embodiment, the horizontal driving assembly preferably adopts a pneumatic cylinder, and can also adopt a structure of a lead screw + a sliding block or other mechanical structures capable of realizing linear reciprocating movement in the horizontal direction.

[0046] Further, the vertical driving assembly comprises a vertical moving member and a second power device 3 for driving the vertical moving member to move linearly in the vertical direction. In this embodiment, the second power device 3 can adopt existing devices such as a linear telescopic electric cylinder, a linear electric push rod and a telescopic pneumatic cylinder, and the folding push plate 5 is fixedly connected to the output end of the power device and moves with the power device to complete the vertical folding action.

[0047] Preferably, in this embodiment, the folding push plate 5 is arranged in parallel with the packaging bag 1, and the length of the folding push plate 5 is designed to be equivalent to the width of the packaging bag 1, so as to ensure that the bag opening of the packaging bag 1 can be folded smoothly. In order to maintain the stability of the installation and application of the folding push plate 5, the horizontal driving assembly is provided with two sets of symmetrical lead screw transmission mechanisms, and the corresponding vertical driving assembly is also provided with two sets.

[0048] Furthermore, the following folding mechanism also includes a front guard edge 6 and a rear guard edge 7 fixedly mounted on the following folding mechanism via a mounting plate 8. In this embodiment, the front guard edge 6 and the rear guard edge 7 are arranged opposite each other on both sides of the conveying channel of the packaging bag 1, and their length direction is parallel to the conveying direction of the packaging bag 1. The cooperation of the front guard edge 6 and the rear guard edge 7 allows the packaging bag 1 to leave the bag opening portion and remain upright, so as to facilitate smooth subsequent folding. During folding, the rear guard edge 7 acts as a shaping part, allowing the bag opening of the packaging bag 1 to be bent and formed along the upright edge of the rear guard edge 7.

[0049] In this embodiment, the working principle and process of the folding mechanism are as follows:

[0050] First, the packaging bag 1 is conveyed at a constant speed along the production line to the folding station, located between the front guard edge 6 and the rear guard edge 7. At this time, the folding push plate 5 is located on one side of the packaging bag 1. Figure 1 As shown;

[0051] Then, the first drive mechanism drives the first sliding member 2 to move, causing the folding edge push plate 5 and the second drive mechanism to move synchronously with the packaging bag 1. During the following movement, the third power device 4 drives the horizontal moving member 9 to move the folding edge push plate 5 horizontally a short distance towards the rear guard edge 7 (so that the folding edge push plate 5 is offset from the rear guard edge 7), causing the opening of the packaging bag 1 to bend horizontally under the action of the rear guard edge 7. Figure 2 As shown;

[0052] Subsequently, the second power unit 3 drives the vertical moving component to move the folding push plate 5 downward, bending the opening of the horizontally bent packaging bag 1 vertically under the action of the rear guard edge 7, thus completing the folding. Figure 3 As shown (the rear guard edge is omitted in the figure); the folded packaging bag 1 is kept in the folded state by the shaping component and continues to be conveyed to the next process;

[0053] Finally, the vertical drive component and the horizontal drive component move, causing the folding push plate 5 to return to its original position. At the same time, the first drive mechanism drives the folding push plate 5 and the second drive mechanism to return to their original positions as a whole, and repeats the above process to continuously complete the folding of the packaging bag 1 on the conveyor line.

[0054] In order to ensure that the folded packaging bag 1 can continue to be transported while maintaining its folded state, this solution also includes the following: Figure 3 As shown and Figure 4 The pressing mechanism 11 shown in the figure includes a pressing element and a power device for driving the pressing element to rotate. After the opening of the packaging bag 1 is folded, the power device drives the pressing element to rotate so that its pressing surface contacts and squeezes the folded opening, so that the opening of the packaging bag 1 can maintain the folded state and continue to be transported to the next process.

[0055] Example 3

[0056] On the basis of embodiment 2, the following package bag following edge folding mechanism is provided in the embodiment, which is different from the following edge folding mechanism in embodiment 2.

[0057] In the embodiment, the vertical driving assembly can also be installed on the first sliding member 2 of the first driving mechanism, the horizontal driving assembly is integrally connected with the edge folding push plate 5 on the vertical driving assembly, and the vertical driving assembly drives the horizontal driving assembly to move in the vertical direction, and the edge folding push plate 5 is installed on the horizontal driving assembly and driven by the horizontal driving assembly to move in the horizontal direction.

[0058] At this time, the front baffle and the rear baffle are fixedly arranged on the first sliding member 2, and the height thereof does not change during the edge folding process.

[0059] In the scheme, the working principle of the following edge folding mechanism remains unchanged, and only the vertical driving assembly drives the edge folding push plate 5 and the horizontal driving assembly to move downward synchronously when vertical edge folding is performed.

[0060] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Any simple modification or equivalent change made according to the technical essence of the present application to the above embodiment falls within the protection scope of the present application.

Claims

1. A bag following hemming mechanism characterized by, The first driving mechanism includes a first sliding member (2) and a first power device (10) for driving the first sliding member (2) to move linearly in the horizontal direction.

2. A bag following hemming mechanism according to claim 1, wherein The first driving mechanism includes a first sliding member (2) and a first power device (10) for driving the first sliding member (2) to move linearly in the horizontal direction.

3. A bag following hemming mechanism according to claim 2, wherein The first driving mechanism includes a first sliding member (2) and a first power device (10) for driving the first sliding member (2) to move linearly in the horizontal direction.

4. A bag following hemming mechanism according to claim 2, wherein The first driving mechanism includes a first sliding member (2) and a first power device (10) for driving the first sliding member (2) to move linearly in the horizontal direction.

5. A bag following hemming mechanism according to claim 3, wherein The first driving mechanism includes a first sliding member (2) and a first power device (10) for driving the first sliding member (2) to move linearly in the horizontal direction.

6. A bag following hemming mechanism according to claim 4, wherein The first driving mechanism includes a first sliding member (2) and a first power device (10) for driving the first sliding member (2) to move linearly in the horizontal direction.

7. A bag following hemming mechanism according to any one of claims 1 to 6, wherein The first driving mechanism includes a first sliding member (2) and a first power device (10) for driving the first sliding member (2) to move linearly in the horizontal direction.

8. A bag following hemming mechanism according to any one of claims 1 to 6, wherein The first driving mechanism includes a first sliding member (2) and a first power device (10) for driving the first sliding member (2) to move linearly in the horizontal direction.

9. A bag following hemming mechanism according to claim 1, wherein The first driving mechanism includes a first sliding member (2) and a first power device (10) for driving the first sliding member (2) to move linearly in the horizontal direction.

10. A bag following hemming mechanism according to any one of claims 1 to 6, wherein The first driving mechanism includes a first sliding member (2) and a first power device (10) for driving the first sliding member (2) to move linearly in the horizontal direction. The first driving mechanism includes a first sliding member (2) and a first power device (10) for driving the first sliding member (2) to move linearly in the horizontal direction. The first driving mechanism includes a first sliding member (2) and a first power device (10) for driving the first sliding member (2) to move linearly in the horizontal direction. The first driving mechanism includes a first sliding member (2) and a first power device (10) for driving the first sliding member (2) to move linearly in the horizontal direction. The first driving mechanism includes a first sliding member (2) and a first power device (10) for driving the first sliding member (2) to move linearly in the horizontal direction. 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