Hot cutting roller supporting mechanism of bag making machine

Abstract

The utility model relates to a hot cutting roller supporting mechanism of a bag making machine, which belongs to the field of bag making machines, is arranged on a bag making main frame, assists in supporting a rubber roller at a hot cutting station, and comprises a supporting beam group which is arranged right below the rubber roller and is parallel to the rubber roller, and the top surface of the supporting beam group can be in contact with the bottom surface of the rubber roller to assist in supporting; the guide assembly is used for conducting guide connection on the supporting beam set in the vertical direction; the driving assembly drives the supporting beam set to make linear reciprocating motion in the guiding direction of the supporting beam set. The rubber covered roller can be supported in an auxiliary mode when extruded by a hot knife, the deformation resistance of the rubber covered roller is improved, and the service life of the rubber covered roller is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of bag making machine technology, and in particular to a hot cutting roller support mechanism for a bag making machine. Background Technology

[0002] In the process of manufacturing plastic bags, the plastic film roll is unwound and continuously conveyed through a series of operations such as printing, longitudinal sealing and cutting, transverse sealing and cutting, cold cutting, stacking or rewinding to process the bag body. Examples include common roll garbage bags, roll food bags, stacked vest bags, etc.

[0003] At the hot-cutting station of a bag-making machine, plastic bags need to be sealed at the ends using a hot knife, which moves in a reciprocating linear motion from top to bottom. A rubber roller needs to be installed below the hot knife as an anvil to bear the sealing and cutting pressure. The advantage of using a rubber roller is that it rotates a certain angle after each sealing and cutting, avoiding continuous use of the same position and preventing burns to the non-sealed edges of the plastic bag. However, existing rubber rollers are often installed using bearings at both ends, with no support in the middle. To ensure the production of large-diameter plastic bags and improve the efficiency of double-line bag making, the length of the rubber roller is often no less than 1 meter. Therefore, after prolonged use, the large-span rubber roller is prone to fatigue and deformation under thermal stress and repeated pressure and impact from the hot knife. This deformation causes edge distortion and a decrease in bag quality.

[0004] Therefore, it is necessary to develop a support mechanism for the hot cutting roller of a bag making machine to overcome the above-mentioned defects. Utility Model Content

[0005] The purpose of this invention is to provide a support mechanism for the hot cutting roller of a bag making machine, which can provide auxiliary support for the rubber roller when it is squeezed by the hot knife, increase the deformation resistance of the rubber roller, and improve its service life.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] This utility model discloses a hot-cutting roller support mechanism for a bag-making machine, which is installed on the main frame of the bag-making machine and provides auxiliary support for the rubber roller at the hot-cutting station, including:

[0008] A support beam assembly is positioned directly below the rubber roller and parallel to it. The top surface of the support beam assembly can contact the bottom surface of the rubber roller for auxiliary support.

[0009] The guide assembly provides vertical guidance and connection for the support beam assembly;

[0010] The drive component drives the support beam assembly to reciprocate linearly along the guide direction of the support beam assembly.

[0011] Furthermore, the support beam assembly includes a beam frame, which is in the form of a gantry frame. A vertical plate is provided on the top of the beam frame crossbeam, and a continuous C-shaped groove is opened on the top surface of the vertical plate. An adhesive strip is installed in the C-shaped groove, and the adhesive strip provides auxiliary support to the bottom surface of the adhesive roller.

[0012] Furthermore, the side wall of the upright plate is provided with heat dissipation holes, and a plurality of heat dissipation holes are equidistantly spaced along the length of the upright plate; the heat dissipation holes are vertically oriented oblong holes.

[0013] Furthermore, the guiding assembly includes a second slider and a second linear guide rail. The second linear guide rail is vertically arranged on the inner side wall of the side plate of the bag making host frame. The two second linear guide rails are symmetrically arranged, and the second slider is slidably connected to the second linear guide rail. The two second sliders are respectively fixedly connected to both ends of the beam frame.

[0014] Furthermore, the drive assembly includes an eccentric wheel two and a connecting rod two. The eccentric wheel two is mounted on the hot knife drive shaft that drives the hot knife. The sleeve at the bottom end of the connecting rod two is sleeved on the outer ring of the eccentric wheel two, and the top end of the connecting rod two is connected to the pin seat on the inner side of the bottom end of the beam column through a pin.

[0015] Furthermore, a reflector is provided in the middle of the rear side of the beam frame crossbeam, and the reflector works in conjunction with a photoelectric switch to detect whether a plastic bag has fallen.

[0016] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0017] This utility model discloses a support mechanism for a hot-cutting roller in a bag-making machine. By adding a support beam assembly to provide auxiliary support for the bottom surface of the roller, the rigidity of the roller is increased, preventing sagging deformation. Through the arrangement of the guide and drive components, the support beam assembly only rises to provide auxiliary support at the instant the hot-cutting blade presses against the top surface of the roller, avoiding interference with the roller's rotation. This utility model's hot-cutting roller support mechanism for bag-making machines can provide auxiliary support for the roller when it is squeezed by the hot-cutting blade, increasing the roller's resistance to deformation and extending its service life.

[0018] Furthermore, by installing a vertical plate on the top of the beam frame, with a continuous C-shaped groove on its top surface, and installing rubber strips within the C-shaped groove, the rubber strips provide flexible auxiliary support for the rubber roller, avoiding damage caused by hard metal edges contacting the rubber roller. The addition of heat dissipation holes reduces the temperature of the beam frame, preventing thermal deformation. The hot-blade drive shaft synchronously drives the connecting rod two; since the hot-blade and the beam frame share the same drive source, their movements are synchronized, achieving coordinated action rhythms. By adding a reflector to the center of the rear side of the beam frame, it can work in conjunction with the photoelectric switch to collect signals of plastic bag / film falling, enabling rapid maintenance response of the equipment. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a three-dimensional structural diagram of the hot cutting roller support mechanism of the bag making machine of this utility model;

[0021] Figure 2 This is a schematic diagram of the main structure of the hot cutting roller support mechanism of the bag making machine of this utility model;

[0022] Figure 3 This is a side sectional view of the hot cutting roller support mechanism of the bag making machine of this utility model.

[0023] Figure 4 This is a three-dimensional structural diagram of the rubber roller mounting part in this utility model;

[0024] Figure 5 This is a three-dimensional structural diagram of the support beam assembly in this utility model.

[0025] Explanation of reference numerals in the attached diagram: 1. Bag making main frame; 101. Linear guide rail one; 102. Linear guide rail two; 2. Hot knife drive shaft; 201. Eccentric wheel one; 202. Eccentric wheel two; 3. Connecting rod one; 4. Slider one; 5. Hot knife crossbeam; 6. Hot knife; 7. Glue roller; 701. Pulley one; 8. Rear guard plate; 9. Connecting rod two; 10. Slider two; 11. Support beam assembly; 111. Beam frame; 112. Pin seat; 113. Heat dissipation hole; 114. Reflector; 12. Pulley two. Detailed Implementation

[0026] The core of this utility model is to provide a support mechanism for the hot cutting roller of a bag making machine, which can provide auxiliary support for the rubber roller when it is squeezed by the hot knife, increase the deformation resistance of the rubber roller, and improve its service life.

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Refer to the attached diagram. Figure 1 This is a three-dimensional structural diagram of the hot cutting roller support mechanism of the bag making machine of this utility model; Figure 2 This is a schematic diagram of the main structure of the hot cutting roller support mechanism of the bag making machine of this utility model; Figure 3 This is a side sectional view of the hot cutting roller support mechanism of the bag making machine of this utility model. Figure 4 This is a three-dimensional structural diagram of the rubber roller mounting part in this utility model; Figure 5 This is a three-dimensional structural diagram of the support beam assembly in this utility model.

[0030] In one specific implementation, such as Figures 1-5 As shown, this utility model is an improvement on the existing bag-making machine. Currently, the hot-blade drive shaft 2 is horizontally mounted between the two side plates of the bag-making main frame 1 via a bearing seat. Eccentric wheels 201 are installed at both ends of the hot-blade drive shaft 2. The sleeve at the bottom end of the connecting rod 3 is sleeved on the outer ring of the eccentric wheel 201. The top pin of the connecting rod 3 is connected to the slider 4. The slider 4 is guided and connected to the vertical linear guide rail 101, which is installed on the outer wall of the side plate of the bag-making main frame 1. The two ends of the hot-blade beam 5 are respectively installed to the slider 4. The hot-blade beam 5 is connected to the hot-blade 6 via multiple downward-facing buffer rods. The hot-blade 6 can reciprocate along the vertical direction, continuously pressing the plastic bag film to be sealed onto the rubber roller 7 to complete sealing and cutting. One end of the rubber roller 7 is provided with a pulley 701, which is connected to a pulley 12 via a synchronous belt. The pulley 12 is mounted on the output shaft of the servo motor. A rear guard plate 8 is provided on the rear side of the rubber roller 7. The rear guard plate 8 helps to support the plastic bag being conveyed backward and can also prevent the plastic bag from getting tangled in the rubber roller 7.

[0031] The hot-cutting roller support mechanism of this utility model is installed on the main frame 1 of the bag making machine, and provides auxiliary support for the rubber roller 7 at the hot-cutting station, including:

[0032] The support beam assembly 11 is located directly below the rubber roller 7 and is parallel to the rubber roller 7. The top surface of the support beam assembly 11 can contact the bottom surface of the rubber roller 7 to provide auxiliary support.

[0033] The guide assembly provides vertical guidance for the support beam assembly 11.

[0034] The drive component drives the support beam assembly 11 to reciprocate linearly along the guide direction of the support beam assembly 11.

[0035] By adding a support beam assembly 11 to provide auxiliary support to the bottom surface of the rubber roller 7, the rigidity of the rubber roller 7 can be increased, preventing concave deformation. Through the configuration of the guide assembly and drive assembly, the support beam assembly 11 only rises to provide auxiliary support at the instant the hot knife 6 presses against the top surface of the rubber roller 7, thus avoiding interference with the rotation of the rubber roller 7. This utility model's hot-cutting roller support mechanism for bag-making machines can provide auxiliary support to the rubber roller when it is squeezed by the hot knife, increasing the roller's resistance to deformation and extending its service life.

[0036] In one specific embodiment of this utility model, such as Figures 1-3 and Figure 5 As shown, the support beam assembly 11 includes a beam frame 111, which is in the form of a gantry frame. A vertical plate is installed on the top of the crossbeam of the beam frame 111, and a continuous C-shaped groove is formed on the top surface of the vertical plate. A rubber strip is installed within the C-shaped groove, providing auxiliary support to the bottom surface of the rubber roller 7. That is, the top surface of the rubber strip is in flexible contact with the outer wall of the rubber roller 7. The top surface of the rubber strip can be a flat surface or a concave arc surface adapted to the outer wall of the rubber roller 7.

[0037] Specifically, such as Figure 5 As shown, heat dissipation holes 113 are provided on the side wall of the upright plate, and multiple heat dissipation holes 113 are equally spaced along the length of the upright plate. The heat dissipation holes 113 are vertically oriented oblong holes.

[0038] By setting a vertical plate on the top of the beam 111, and opening a continuous C-shaped groove on the top surface of the vertical plate, a rubber strip is installed in the C-shaped groove. The rubber strip provides flexible auxiliary support for the rubber roller 7, avoiding damage caused by the hard metal edge contacting the rubber roller 7. By adding heat dissipation holes 113, the temperature of the beam 111 can be reduced, preventing thermal deformation.

[0039] In one specific embodiment of this utility model, such as Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the guiding assembly includes a second slider 10 and a second linear guide rail 102. The second linear guide rail 102 is vertically mounted on the inner side wall of the side plate of the bag-making main frame 1 using countersunk screws. The two second linear guide rails 102 are symmetrically arranged, and the second slider 10 is slidably connected to the second linear guide rail 102. The two sliders 10 are respectively fixedly connected to both ends of the beam frame 111. The second slider 10 is a ball-bearing slider.

[0040] Obviously, the guide assembly can also use a guide rod and a guide sleeve for vertical guidance, and similar simple replacement methods all fall within the protection scope of this utility model.

[0041] In one specific embodiment of this utility model, such as Figure 1 , Figure 3 and Figure 5 As shown, the drive assembly includes an eccentric wheel 202 and a connecting rod 9. The eccentric wheel 202 is mounted on the hot knife drive shaft 2 that drives the hot knife 6, and there are two sets of eccentric wheels 202 and two sets of connecting rods 9. The sleeve at the bottom end of the connecting rod 9 is rotatably fitted onto the outer ring of the eccentric wheel 202. The top end of the connecting rod 9 is connected to the pin seat 112 on the inner side of the bottom end of the column of the beam frame 111 via a pin.

[0042] It should be noted that the eccentric directions of eccentric wheel 1 201 and eccentric wheel 202 are exactly opposite, with a difference of 180 degrees between them. In this way, when the hot knife 6 is pressing the rubber roller 7 at the lowest position, the upright plate is at the highest position, and the rubber strip on the C-shaped groove abuts and supports the bottom surface of the rubber roller 7.

[0043] The hot knife drive shaft 2 synchronously drives the connecting rod 9. The hot knife 6 and the beam frame 111 are the same drive source, which can ensure that their movements are synchronized and achieve coordinated movement rhythm.

[0044] In one specific embodiment of this utility model, such as Figure 5 As shown, a reflector 114 is installed in the middle of the rear side of the beam 111. The reflector 114 works in conjunction with a photoelectric switch to detect whether a plastic bag has fallen. The photoelectric switch is installed at the rear. When a plastic bag accidentally gets tangled in the tail rod or falls through a gap, the reflection from the reflector 114 is blocked by the plastic bag film. The photoelectric switch then sends a feedback signal to the bag-making machine's electrical control system, stopping the machine for maintenance and repair.

[0045] By adding a reflector 114 to the middle of the rear side of the beam 111, the photoelectric switch can be used to collect the signal of the plastic bag falling, enabling rapid maintenance response of the equipment.

[0046] The working principle of the hot-cutting roller support mechanism of this utility model bag making machine is as follows: During the rotation of the hot-cutting knife drive shaft 2, it drives the eccentric wheel 1 201 and the eccentric wheel 202 to rotate synchronously. The eccentric wheel 1 201 drives the slider 4 to move vertically back and forth along the linear guide rail 101 through the connecting rod 3, thereby realizing the downward sealing and cutting action of the hot-cutting knife 6 and the lifting action of the knife. The eccentric wheel 202 drives the slider 2 10 to move vertically back and forth along the linear guide rail 202 through the connecting rod 2 9, thereby realizing the upward support and pull-back action of the beam frame 111. Moreover, at the moment when the hot-cutting knife 6 presses down to the top of the glue roller 7 to seal and cut the plastic bag, the beam frame 111 pushes upward, and the glue strip on the C-shaped groove provides centered support for the glue roller 7, resulting in good stability.

[0047] In summary, by adding a support beam assembly 11 to provide auxiliary support to the bottom surface of the rubber roller 7, the rigidity of the rubber roller 7 can be increased, preventing concave deformation. Through the arrangement of the guide and drive components, the support beam assembly 11 only rises to provide auxiliary support at the instant the hot knife 6 presses against the top surface of the rubber roller 7, avoiding interference with the rotation of the rubber roller 7. This utility model's hot-cutting roller support mechanism for bag-making machines can provide auxiliary support to the rubber roller when squeezed by the hot knife, increasing its resistance to deformation and extending its service life. Furthermore, by setting a vertical plate on the top of the beam of the beam frame 111, with a continuous C-shaped groove on the top surface of the vertical plate, and installing a rubber strip in the C-shaped groove, the rubber strip provides flexible auxiliary support to the rubber roller 7, avoiding damage caused by hard metal edges contacting the rubber roller 7. By adding heat dissipation holes 113, the temperature of the beam frame 111 can be reduced, preventing thermal deformation. The hot knife drive shaft 2 synchronously drives the connecting rod 9. Since the hot knife 6 and the beam frame 111 share the same drive source, their movements are synchronized, ensuring a coordinated action rhythm. By adding a reflector 114 to the center of the rear side of the beam frame 111, it can work in conjunction with the photoelectric switch to collect signals of plastic bag / film falling, enabling rapid maintenance response of the equipment.

[0048] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0049] It should be noted that all components in the technical solution of this application require necessary additional facilities for water supply, oil supply, power supply, and gas supply for driving and / or control. Unless otherwise stated, they are assumed to be used and equipped with existing technology and no special explanation is required.

[0050] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A bag making machine hot cutting roller supporting mechanism, which is arranged on a bag making main frame (1) and assists in supporting a rubber roller (7) at a hot cutting station, characterized in that, include: A support beam assembly (11) is located directly below the rubber roller (7) and is parallel to the rubber roller (7). The top surface of the support beam assembly (11) can contact the bottom surface of the rubber roller (7) for auxiliary support. The guide assembly provides a vertical guide connection for the support beam assembly (11); The drive assembly drives the support beam group (11) to reciprocate linearly along the guide direction of the support beam group (11).

2. The hot-cut roller support mechanism of a bag machine according to claim 1, characterized in that: The support beam assembly (11) includes a beam frame (111), which is in the form of a gantry frame. A vertical plate is provided on the top of the crossbeam of the beam frame (111), and a continuous C-shaped groove is opened on the top surface of the vertical plate. A rubber strip is installed in the C-shaped groove, and the rubber strip provides auxiliary support to the bottom surface of the rubber roller (7).

3. The hot-cut roller support mechanism of claim 2, wherein: The side wall of the upright plate is provided with heat dissipation holes (113), and a plurality of heat dissipation holes (113) are equidistantly spaced along the length of the upright plate; the heat dissipation holes (113) are waist-shaped holes in the vertical direction.

4. The hot-cut roller support mechanism of claim 2, wherein: The guiding assembly includes a second slider (10) and a second linear guide rail (102). The second linear guide rail (102) is vertically arranged on the inner side wall of the side plate of the bag making host frame (1). The two second linear guide rails (102) are symmetrically arranged. The second slider (10) is guided and slidably connected to the second linear guide rail (102). The two second sliders (10) are respectively fixedly connected to both ends of the beam frame (111).

5. The hot-cut roller support mechanism of claim 4, wherein: The drive assembly includes an eccentric wheel (202) and a connecting rod (9). The eccentric wheel (202) is mounted on the hot knife drive shaft (2) of the hot knife (6). The sleeve at the bottom of the connecting rod (9) is sleeved on the outer ring of the eccentric wheel (202). The top of the connecting rod (9) is connected to the pin seat (112) on the inner side of the bottom end of the beam frame (111) column by a pin.

6. The hot-cut roller support mechanism of claim 5, wherein: A reflector (114) is provided in the middle of the rear side of the beam of the beam frame (111). The reflector (114) works in conjunction with a photoelectric switch to detect whether a plastic bag has fallen.

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