Vibrating bag opening device for hot cutting bag opening of polymer laminated plastic woven bag

Abstract

The utility model relates to a vibrating bag opening device for hot cutting opening of a polymer laminated plastic woven bag, which comprises a hot cutting tool and a bag supporting plate, two sides of the hot cutting tool are provided with vibrating blocks capable of moving downwards, each vibrating block is provided with a vibrating generator, and the hot cutting tool is further provided with a tool pushing cylinder. The vibration block pushing air cylinder moves to push the vibration block to move downwards, after the vibration block presses the woven bag through elastic force, the cutter pushing air cylinder pushes the hot cutting cutter to conduct secondary telescopic motion, and the hot cutting cutter descends to cut the woven bag; at the moment, the vibration generator starts to generate mechanical vibration to drive the vibration block to generate vibration (similar to rubbing the periphery of a cutting opening of a woven bag by hands), and the bag is in a vibration state during hot cutting, so that the possibility of adhesion of the bag is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of woven bag opening in packaging production, in particular to a vibration bag opening device for thermally cutting and opening polymer laminated plastic woven bags. Background Art

[0002] Woven bags are widely used as packaging containers for fertilizers, chemical products and other items. Plastic woven bags can be divided into PP woven bags, HDPE woven bags and LLDPE woven bags according to different raw materials. Woven bags can be divided into ordinary woven bags, coated woven bags and laminated woven bags according to the structural level of woven bags. Plastic woven bags need to consider wear resistance, corrosion resistance, acid and alkali resistance and other index parameters. Therefore, the research on the improvement of polypropylene raw materials and production processes of plastic woven bags has always been the key direction in the field. The polymer laminated plastic woven bags produced by modifying polypropylene raw materials are the current production trend of woven bags. The production process of woven bags includes: printing, cutting, inner bag, crimping and sewing, packaging and other important links. Among them, the hot cutting and inner bag process basically adopts a semi-automatic production method. After the roll material is cut by manual hot cutting equipment, the inner bag is manually set, and finally the bottom of the bag is sewn; the reason is that the hot cutting bag mouth sticks, which brings inconvenience to the subsequent bagging process. Usually, the bag mouth is manually opened before the inner bag is set. At the same time, there is a lot of smoke generated during hot cutting, especially in winter. If the ventilation is poor, it will affect the health of workers. How to realize hot cutting and automatic bag opening has always been the research and development direction in the field. Although in China's utility model patent "a kind of woven bag hot cutting A bag opening device (Paper No. CN206297815U) discloses a bag opening device, including a conveying platform, an arc-shaped knife groove between the gaps of the conveying platform and a cutter group. The cutter group includes a cutter frame, a cutter, a bag pressing device and a vacuum pump. The vacuum pump is installed on the side of the cutter frame. The cutter is hoisted in the middle of the cutter frame. A bag pressing device is hoisted on both sides of the cutter. The bag pressing device includes a bag pressing rod and a suction cup at the bottom of the bag pressing rod. The suction cup is connected to the vacuum pump. A cylinder mechanism is arranged on the cutter frame to drive the cutter group to reciprocate up and down. The cutter frame moves downward. When it moves to the lowest point, the cutter falls into the groove of the arc-shaped knife groove, and the shape of the arc-shaped knife groove makes the woven bag arc-shaped. The cutter cuts the bag downward, and the tension of the upper bag is slightly greater than that of the lower bag. The upper layer of the bag is separated first, and then the lower layer of the bag is separated. Then the upper layer of the bag is sucked up by the suction cup to completely separate the upper and lower layers to avoid adhesion. Vacuum bag opening is adopted. However, in actual production, using suction cups to suck the bags will cause air leakage, and there will be gaps in the woven bags, which will cause the suction bag to fail. Therefore, suction cup bag opening is mostly used to deal with airtight bags. Utility Model Content

[0003] In view of the above problems, the utility model provides a vibration bag opening device for hot cutting of polymer laminated plastic woven bags, which uses mechanical vibration to generate tangential force from the heat of the woven bags, simulates manual bag rubbing, avoids bag sticking, and has high reliability.

[0004] The specific technical scheme of the utility model is a vibration bag opening device for hot cutting of polymer laminated plastic woven bags, comprising a hot cutting tool and a bag support plate, vibration blocks capable of moving downward are arranged on both sides of the hot cutting tool, a vibration generator is installed on the vibration block, and a tool pushing cylinder is also installed on the hot cutting tool.

[0005] Further, preferably, installation boxes are installed on both sides of the hot cutting tool, and a vibration block pushes the cylinder in the installation box, and the telescopic end of the vibration block pushes the cylinder to be connected to the vibration generator.

[0006] Further, preferably, the vibration block pushes the telescopic end of the cylinder to be provided with a mounting plate, a guide hole is opened on the mounting plate, a guide pin is slidably inserted in the guide hole of the mounting plate, the guide pin is connected to the vibration generator away from the mounting plate, and a spring is provided between the vibration generator and the mounting plate.

[0007] Furthermore, preferably, a buffer spring installation groove is opened in the drag platform, and the buffer spring is arranged in the buffer spring installation groove.

[0008] Furthermore, preferably, it further comprises an adjusting mechanism, and the lower end of the towing platform is provided with an adjusting mechanism for adjusting the height of the towing platform.

[0009] Further, preferably, the adjustment mechanism includes a connecting block arranged at the bottom of the drag platform, a connecting screw is vertically installed at the lower end of the connecting block, the other end of the connecting screw is installed on a mounting seat, and the mounting seat is installed on a mounting beam at the bottom of the bed.

[0010] Furthermore, preferably, the number of the vibration blocks is more than one.

[0011] Further, preferably, a polyurethane pad is provided at the bottom of the vibration block, and a tooth structure is provided on the polyurethane pad facing the woven bag.

[0012] The beneficial effect of the utility model is that the vibration block is used to push the cylinder to move the vibration block downward. After the vibration block presses the woven bag by elastic force, the tool pushes the cylinder to push the hot cutting tool to perform secondary telescopic movement. When the hot cutting tool descends to cut the woven bag, the vibration generator starts to generate mechanical vibration to drive the vibration block to vibrate (similar to rubbing the periphery of the cut mouth of the woven bag with human hands). Since the bag is in a vibrating state during hot cutting, the possibility of the bag sticking is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a reference layout diagram for the production, installation and use status of this utility model;

[0014] Figure 2 The main view of this utility model Figure 1, wherein the bag pallet, the towing platform and the mounting box on the left are cut away to show their internal structure;

[0015] Figure 3 The main view of this utility model Figure 2 , wherein the telescopic mechanism moves downward, and the tool pushes the cylinder and the vibrating block pushes the cylinder to extend downward;

[0016] Figure 4 The main view of this utility model Figure 1 Side view Figure 1 , in which the mounting box and other parts are removed, the hot cutting tool, tool push cylinder and other parts are shown, and the mounting beam is cut away;

[0017] Figure 5 The main view of this utility model Figure 1 Side view Figure 2 ;

[0018] Figure 6 for Figure 2 A partial enlarged view of middle A;

[0019] Figure 7 for Figure 3 A partial enlarged view of B.

[0020] In the figure: 100- conveyor, 200- woven bag;

[0021] 1-bed, 2-hot cutting tool, 3-telescopic mechanism, 4-tool groove, 5-bag support plate, 6-buffer spring, 601-buffer spring mounting groove, 7-vibration block, 701-polyurethane pad, 8-vibration generator, 9-adjustment mechanism, 901-connecting block, 902-connecting screw, 903-mounting beam, 904-mounting seat, 905-waist groove, 10-drag table, 11-mounting box, 1201-tool pushing cylinder, 1202-vibration block pushing cylinder, 13-mounting plate, 14-spring, 15-guide nail. DETAILED DESCRIPTION

[0022] In order to make the technical problems and technical solutions solved by the utility model more clearly understood, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0023] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] like Figure 1 As shown, a vibration bag opening device for hot cutting of polymer laminated plastic woven bags comprises a bed 1, a hot cutting tool 2, a telescopic mechanism 3, a tool groove 4 and a bag support plate 5. The conveyor 100 delivers the woven bag 200 to be cut onto the bag support plate 5 in the bed 1, and the hot cutting tool 2 moves downward through the telescopic mechanism 3 to cut the woven bag 200. The above technology is the prior art, as recorded in the prior art documents such as the Chinese utility model patent "Electrothermal Cutting Device for Woven Bag Processing" (CN220053075U), and will not be repeated in this application.

[0026] like Figure 2-5 As shown, the utility model technology, by arranging vibration blocks 7 that can move downward on both sides of the hot cutting tool 2, of course, in this embodiment, a cylinder is used to push the vibration block 7 to move downward, and a linear motor or a gear, rack and other mechanisms that realize linear motion can also be used. A tool pushing cylinder 1201 is added to the hot cutting tool 2 to perform secondary telescopic movement on the hot cutting tool 2.

[0027] That is Figure 2 and Figure 3 As shown, the hot cutting tool 2 is symmetrically installed with a mounting box 11 on both sides, and a vibration block is set in the mounting box 11 to push the cylinder 1202, and the telescopic end of the vibration block push cylinder 1202 is provided with a mounting plate 13, please refer to Figure 6, guide holes are opened on the mounting plate 13, and there are 4 guide holes. Guide pins 15 are slidably inserted in the guide holes of the mounting plate 13. Rubber pads can also be added to the guide pins 15 and the mounting plate 13. The lower end of the guide pin 15 is threadedly connected to the bottom plate mounting plate of the vibration generator 8. The top cap on the guide pin 15 is larger than the diameter of the guide hole of the mounting plate 13 to prevent it from falling off. The guide pin 15 and the guide hole of the mounting plate 13 are matched with a clearance fit, that is, the aperture of the guide hole should be larger than the diameter of the guide pin 15.

[0028] A spring 14 is arranged between the bottom mounting plate of the vibration generator 8 and the mounting plate 13, so that the vibration block 7, the vibration generator 8 and the mounting plate 13 are elastically and flexibly connected, which can not only ensure that the vibration block 7 has a flexible pressure when pressing the woven bag 200, but also ensure that the vibration block 7 achieves better mechanical vibration. The vibration generator 8 adopts a small or micro vibrator, which is a prior art, such as a small electromagnetic vibrator.

[0029] Three vibration blocks 7 are connected to the lower part of the vibration generator 8. The vibration blocks 7 can also be made of light metal or non-metal materials. Of course, one large block can also be used, which is within the technical scope of the present utility model. A polyurethane pad 701 with a tooth structure is provided at the bottom of the vibration block 7.

[0030] The bottom of the bag support plate 5 for carrying the woven bag 200 is connected to the towing platform 10 through the buffer spring 6. Four buffer springs 6 are provided, which are respectively arranged at the four corners of the bag support plate 5. A buffer spring installation groove 601 is opened in the towing platform 10, and the buffer spring 6 is arranged in the buffer spring installation groove 601. It should be noted that the gap between the bag support plate 5 and the towing platform 10 should not be too large.

[0031] like Figure 2 and Figure 4 As shown, it also includes an adjusting mechanism 9. The lower end of the towing platform 10 is provided with an adjusting mechanism 9 for adjusting the height of the towing platform 10. The adjusting mechanism 9 includes a connecting block 901 arranged at the bottom of the towing platform 10. The connecting block 901 is arranged at the four corners of the lower end surface of the towing platform 10. A connecting screw 902 is vertically installed at the lower end of the connecting block 901. The other end of the connecting screw 902 is installed on a mounting seat 904. The mounting seat 904 is installed on a mounting beam 903 at the bottom of the bed 1. A waist groove 905 is opened on the mounting beam 903 in the vertical direction. A bolt is inserted into the mounting hole of the mounting seat 904. The bolt passes through the waist groove 905 and is fastened by a nut. The waist groove 905 can realize the fine-tuning installation of the mounting seat 904 in the vertical direction, thereby adjusting the height of the towing platform 10.

[0032] like Figure 1 As shown, when the utility model device is in production, the hot cutting tool 2 moves downward through the telescopic mechanism 3 and when it moves to a certain height, as shown in FIG. Figure 3 and Figure 7As shown, the vibration block pushes the cylinder 1202 to move the vibration block 7 downward. After the vibration block 7 presses the woven bag 200 by elastic force, the tool pushes the cylinder 1201 to push the hot cutting tool 2 to perform a secondary telescopic movement. When the hot cutting tool 2 descends to cut the woven bag 200, the vibration generator 8 begins to generate mechanical vibrations to drive the vibration block 7 to vibrate (similar to rubbing the area around the cut end of the woven bag with human hands). Since the bag is in a vibrating state during hot cutting, and because the hardness and strength of the polymer laminated plastic bag are better than those of ordinary woven bags, it can withstand better vibration pulling force, and the vibration can avoid the possibility of the bag sticking.

[0033] The present invention is described in detail above through specific and preferred embodiments, but those skilled in the art should understand that the present invention is not limited to the embodiments described above, and any modifications, equivalent substitutions, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vibration bag opening device for thermal cutting of polymer laminated plastic woven bags, comprising a thermal cutting tool (2) and a bag support plate (5), characterized in that: Vibration blocks (7) capable of moving downwards are arranged on both sides of the hot cutting tool (2), a vibration generator (8) is installed on the vibration block (7), and a tool pushing cylinder (1201) is also installed on the hot cutting tool (2).

2. A vibration bag opening device for thermal cutting of polymer laminated plastic woven bags according to claim 1, characterized in that: Mounting boxes (11) are installed on both sides of the hot cutting tool (2), and a vibration block pushing cylinder (1202) is arranged in the mounting box (11), and the telescopic end of the vibration block pushing cylinder (1202) is connected to the vibration generator (8).

3. A vibration bag opening device for thermal cutting of polymer laminated plastic woven bags according to claim 2, characterized in that: The vibration block pushes the telescopic end of the cylinder (1202) to be provided with a mounting plate (13), the mounting plate (13) being provided with a guide hole, a guide pin (15) being slidably inserted into the guide hole of the mounting plate (13), the guide pin (15) being connected to the vibration generator (8) away from the mounting plate (13), and a spring (14) being provided between the vibration generator (8) and the mounting plate (13).

4. A vibration bag opening device for thermal cutting of polymer laminated plastic woven bags according to claim 1, characterized in that: A buffer spring installation groove (601) is provided in the drag platform (10), and the buffer spring (6) is arranged in the buffer spring installation groove (601).

5. The vibration bag opening device for thermal cutting of polymer laminated plastic woven bags according to claim 1, characterized in that: It also includes an adjusting mechanism (9), and the lower end of the towing platform (10) is provided with an adjusting mechanism (9) for adjusting the height of the towing platform (10).

6. A vibration bag opening device for thermal cutting of polymer laminated plastic woven bags according to claim 5, characterized in that: The adjustment mechanism (9) comprises a connection block (901) arranged at the bottom of the drag platform (10), a connection screw (902) being vertically mounted at the lower end of the connection block (901), the other end of the connection screw (902) being mounted on a mounting seat (904), and the mounting seat (904) being mounted on a mounting beam (903) at the bottom of the bed (1).

7. A vibration bag opening device for thermal cutting of polymer laminated plastic woven bags according to any one of claims 1 to 6, characterized in that: The number of the vibration blocks (7) is more than one.

8. A vibration bag opening device for thermal cutting of polymer laminated plastic woven bags according to claim 7, characterized in that: A polyurethane pad (701) is provided at the bottom of the vibration block (7).

9. A vibration bag opening device for thermal cutting of polymer laminated plastic woven bags according to claim 1, characterized in that: The bottom of the bag support plate (5) is connected to the towing platform (10) via a buffer spring (6).

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