Packaging film clamping device and roll-packing machine

Abstract

The utility model discloses a packaging film clamping device and a roll-packing machine, and belongs to the technical field of packaging equipment. The number of the clamping assemblies is two, and the two clamping assemblies are connected to the two ends of the transverse rod correspondingly. Each clamping assembly comprises a connecting block, a lifting component and an opening and closing component, the lifting component is connected to the connecting block, the lifting component is in transmission connection with the opening and closing component to drive the opening and closing component to ascend and descend, the opening and closing component comprises an opening and closing driver, a first clamping jaw and a second clamping jaw, and the opening and closing driver is used for driving the first clamping jaw to open and close relative to the second clamping jaw; the connecting block is movably connected with the transverse rod so as to drive the two clamping assemblies to get close to each other or get away from each other, the applicability to packaging films of various sizes and specifications can be improved, and the packaging films are stably conveyed into the rolling and packaging space.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging equipment, in particular to a packaging film clamping device and a wrapping machine. Background Art

[0002] In the production process of mattresses, in order to facilitate the transportation of mattresses, manufacturers need to compress and roll the mattresses so that the mattresses are rolled into long cylindrical strips to reduce the packaging volume and transportation volume of the mattresses. The rolling operation of the mattress is generally completed by a rolling machine. The mattress is transported to the rolling space of the rolling machine for rolling, and the rolling machine needs to release the packaging film into the rolling space so that the packaging film and the mattress are rolled together, and then the packaging film is welded and cut to complete the packaging of the mattress.

[0003] In the related technology, the current wrapping machines have poor applicability to packaging films of various sizes and specifications. Packaging films of smaller sizes and specifications are easily affected by static electricity and viscosity, and are easily stuck to the rollers, making it difficult for them to fall into the wrapping space under the action of their own weight, which can easily lead to failure of mattress packaging. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a packaging film clamping device, which is conducive to improving the applicability of packaging films of various sizes and specifications, and stably conveying the packaging film into the wrapping space.

[0005] The utility model also provides a wrapping machine.

[0006] According to the packaging film clamping device of the first aspect of the utility model, the device comprises: a cross bar; two clamping assemblies, which are respectively connected to the two ends of the cross bar; each clamping assembly comprises a connecting block, a lifting component and a stretching component, the lifting component is connected to the connecting block, the lifting component is in transmission connection with the stretching component to drive the stretching component to rise and fall, the stretching component comprises a stretching driver, a first clamping jaw and a second clamping jaw, the stretching driver is used to drive the first clamping jaw to stretch and close relative to the second clamping jaw, and the connecting block is movably connected to the cross bar to drive the two clamping assemblies to move closer to or away from each other.

[0007] The packaging film clamping device according to the embodiment of the utility model has at least the following beneficial effects: two clamping assemblies are respectively connected to the two ends of the cross bar, and the clamping assemblies include a connecting block, a lifting component and an opening and closing component. The connecting block is movably connected to the cross bar to drive the two clamping assemblies to move closer to or away from each other. According to packaging films of different sizes, the user can adjust the spacing between the two clamping assemblies to ensure that the clamping assemblies can clamp packaging films of different sizes. The opening and closing driver can drive the first clamping jaw to open and close relative to the second clamping jaw, that is, the first clamping jaw and the second clamping jaw can jointly clamp the packaging film. The lifting component is connected to the connecting block, and the lifting component It is transmission connected with the opening and closing component to drive the opening and closing component to rise and fall, and cooperates with the opening and closing component to clamp the packaging film, thereby applying tension to the packaging film, so that the packaging film is transported to the winding space. Compared with the packaging equipment in which the packaging film falls into the winding space by its own weight, the packaging film clamping device can clamp and pull the packaging film, which is beneficial to reduce the influence of static electricity and viscosity on the transportation of the packaging film, so that the packaging film can be transported to the winding space, and the transportation is more stable and reliable, to ensure that the packaging film can penetrate into the winding space and be rolled together with the mattress, so as to improve the packaging efficiency of the mattress. The packaging film clamping device can be applied to packaging equipment such as mattress rolling machines.

[0008] According to some embodiments of the utility model, a sliding groove is provided on the crossbar, and the connecting block is slidably connected to the sliding groove.

[0009] Specifically, a sliding groove is provided on the cross bar, and the connecting block is slidably connected to the sliding groove, which can conveniently adjust the relative position relationship of the two clamping components to adapt to packaging films of different sizes and specifications, which is conducive to improving the applicability of the packaging film clamping device to packaging films of different specifications.

[0010] According to some embodiments of the utility model, the clamping assembly further includes a fastener, the connecting block is provided with a screw hole, the fastener is threadedly connected to the screw hole, and the fastener can abut against or separate from the cross bar.

[0011] The clamping assembly also includes a fastener, and the connecting block is provided with a screw hole. After the user slides the connecting block to the preset position of the cross bar, the fastener can be screwed into the screw hole to make the fastener abut against the cross bar, thereby fixing the relative position relationship between the connecting block and the cross bar, so that the spacing between the two clamping assemblies is adapted to packaging films of different sizes and specifications. When it is necessary to adjust the position of the clamping assembly on the cross bar, the user can loosen the fastener to separate the fastener from the cross bar, thereby eliminating the fastener's obstruction to the sliding of the connecting block. Through the sliding connection between the connecting block and the sliding groove, the relative position relationship of the two clamping assemblies can be adjusted to adapt to packaging films of different sizes and specifications.

[0012] According to some embodiments of the present invention, in one of the clamping assemblies, the first clamping jaw and the second clamping jaw are both arranged toward the other clamping assembly.

[0013] In one of the clamping components, the first clamping jaw and the second clamping jaw are both arranged toward the other clamping component, that is, the two groups of first clamping jaws and second clamping jaws are arranged facing each other, which is conducive to clamping the packaging film located between the two clamping components to achieve smooth transportation of the packaging film.

[0014] According to some embodiments of the utility model, the first clamping jaw and the second clamping jaw are both connected to a clamping piece at one end away from the lifting component, and the two clamping pieces are both arranged in the up-and-down direction.

[0015] The first clamping jaw and the second clamping jaw are connected to one end away from the lifting component with a clip. As the first clamping jaw opens and closes relative to the second clamping jaw, the two clips can open and close with each other. The setting of the two clips is conducive to increasing the contact area of ​​the opening and closing component with the packaging film, so as to achieve stable clamping and pulling of the packaging film, so as to achieve stable transportation of the packaging film, so that the packaging film can pass through the winding space of the winding machine to achieve the packaging of the packaging film and the mattress. The two clips are arranged in the up and down directions, which is conducive to enhancing the conveying guidance of the packaging film. The packaging film and the clips can pass through the winding space together to ensure that the packaging film can be stably transported into the winding space to achieve the packaging of the mattress. As the first clamping jaw and the second clamping jaw are separated, the two clips can be moved away from each other, and the upward movement of the lifting component can make the clip withdraw from the winding space.

[0016] According to some embodiments of the present utility model, the opening and closing component further includes a shell, the first clamping jaw is rotatably connected to the shell, and the second clamping jaw is fixedly connected to the shell.

[0017] Taking into account that the opening of the two clamps may easily cause collision with other components in the wrapping machine, the opening and closing component also includes a shell, the first clamping jaw is rotatably connected to the shell, and the second clamping jaw is fixedly connected to the shell, that is, the two clamps can be opened only by rotating the first clamping jaw in a single direction relative to the shell, which is beneficial to reducing the opening angle of the two clamps and avoiding the problem of the clamps colliding with other components in the wrapping machine.

[0018] According to some embodiments of the utility model, the opening and closing component further includes a third clamping jaw, the third clamping jaw is rotatably connected to the housing, and the opening and closing driver is used to drive the first clamping jaw and the third clamping jaw to move closer to or away from each other;

[0019] The opening and closing component has a clamping state and an opening state. The clamping state is that the third clamping jaw is closed with the first clamping jaw, and the two clamping pieces are closed with each other. The opening state is that the third clamping jaw is separated from the first clamping jaw, and the two clamping pieces are separated with each other.

[0020] Specifically, the opening and closing component also includes a third jaw, which is rotatably connected to the shell, and the opening and closing driver is used to drive the first jaw and the third jaw to move closer to or away from each other. In the open state, the third jaw and the first jaw move away from each other, and the first jaw and the second jaw move away from each other, so that the two clamps are separated from each other, and the packaging film can be unrolled between the first jaw and the second jaw; in the clamping state, the opening and closing driver can drive the first jaw to move closer to the second jaw, so that the two clamps are closed together, and at the same time, the third jaw and the first jaw move closer to and close each other, and the packaging film is clamped together through the clamping force of the two clamps and the clamping force of the first jaw and the third jaw, which is beneficial to improve the clamping stability of the packaging film, so as to achieve stable transportation of the packaging film.

[0021] According to some embodiments of the present invention, an end of the third clamping jaw facing the first clamping jaw is connected to an anti-slip layer.

[0022] Furthermore, in order to enhance the clamping stability of the packaging film by the opening and closing component, an anti-skid layer is connected to one end of the third jaw facing the first jaw. Under the driving action of the opening and closing drive, the third jaw can be closed with the first jaw to achieve clamping of the packaging film. The anti-skid layer can fit with the packaging film, thereby enhancing the clamping effect of the packaging film. During the transportation of the packaging film, it is helpful to reduce the relative slippage between the packaging film and the opening and closing component.

[0023] According to the second aspect of the present invention, the wrapping machine includes: a frame, a wrapping space, and an upper end of the wrapping space is connected to an inlet; a packaging film clamping device as shown in any one of the first aspects, the cross bar is located above the inlet, and the lifting component can drive the opening and closing component to move closer to or away from the inlet.

[0024] The wrapping machine according to the embodiment of the utility model has at least the following beneficial effects: the cross bar is located above the insertion port, and two clamping assemblies are respectively connected to the two ends of the cross bar, and the clamping assemblies include a connecting block, a lifting component and an opening and closing component. The connecting block is movably connected to the cross bar to drive the two clamping assemblies to move closer or farther away. According to packaging films of different sizes, the user can adjust the spacing between the two clamping assemblies to ensure that the clamping assemblies can clamp packaging films of different sizes. The opening and closing driver can drive the first clamping jaw to open and close relative to the second clamping jaw, that is, the first clamping jaw and the second clamping jaw can jointly clamp the packaging film. The lifting component is connected to the connecting block, and The lifting component is transmission-connected with the opening and closing component to drive the opening and closing component to lift and lower. The lifting component can drive the opening and closing component to move closer to or farther from the inlet, and cooperate with the opening and closing component to clamp the packaging film, thereby exerting tension on the packaging film, so that the packaging film is transported to the wrapping space. Compared with the packaging equipment in which the packaging film falls into the wrapping space by its own weight, the packaging film clamping device can reduce the influence of static electricity and viscosity on the transportation of the packaging film by clamping and pulling the packaging film, so that the packaging film is transported to the wrapping space, and the transportation is more stable and reliable, thereby ensuring that the packaging film can penetrate into the wrapping space and be rolled together with the mattress, so as to improve the packaging efficiency of the mattress.

[0025] According to some embodiments of the present invention, the wrapping machine further includes an unwinding assembly, which is used to unwind the packaging film between the two clamping assemblies.

[0026] The wrapping machine also includes an unwinding component, which is used to unwind the packaging film between the two clamping components. By coordinating the positioning of the two clamping components on the cross bar and the clamping action of the opening and closing components, the packaging film clamping device can clamp the packaging film. Under the driving action of the lifting component, the packaging film can pass through the insertion port and enter the wrapping space to realize the joint wrapping of the packaging film and the mattress.

[0027] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0029] Figure 1 This is a structural schematic diagram of a wrapping machine according to an embodiment of the utility model;

[0030] Figure 2 This is a schematic structural diagram of a packaging film clamping device according to an embodiment of the utility model;

[0031] Figure 3 This is a schematic structural diagram of a packaging film clamping device according to an embodiment of the utility model from another perspective;

[0032] Figure 4 This is a schematic structural diagram from another perspective of a packaging film clamping device according to an embodiment of the utility model.

[0033] Figure Number:

[0034] 100, cross bar; 110, sliding groove;

[0035] 200, clamping assembly; 210, connecting block; 211, screw hole; 220, lifting component; 230, opening and closing component; 231, housing; 232, first clamping jaw; 233, second clamping jaw; 234, third clamping jaw; 235, clip; 240, fastener;

[0036] 300, rack; 310, entrance;

[0037] 400, unwinding component;

[0038] 500. Block frame. DETAILED DESCRIPTION

[0039] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0040] In the description of the present invention, it should be understood that the descriptions involving orientation, such as the orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0041] In the description of the present utility model, "a plurality" means more than two. If there is a description of "first" or "second", it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0042] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0043] Reference Figures 1 to 4As shown, a packaging film clamping device according to an embodiment of the present invention comprises: a cross bar 100, a clamping assembly 200 and two retaining frames 500. The following description is made by taking the two ends of the cross bar 100 extending left and right as an example.

[0044] Reference Figure 1 and Figure 2 As shown, two baffles 500 are arranged at intervals on the left and right sides, and the two baffles 500 are arranged vertically. The left and right ends of the crossbar 100 are fixedly connected to the two baffles 500, respectively, so as to provide support for the connection of the clamping assembly 200. Two clamping assemblies 200 are provided, and the two clamping assemblies 200 are connected to the left and right ends of the crossbar 100, respectively. The two clamping assemblies 200 are movably connected to the crossbar 100, so that the spacing between the two clamping assemblies 200 can be adjusted, and a clamping space is formed between the two clamping assemblies 200. The packaging film is unwound between the two clamping assemblies 200. By adjusting the spacing of the clamping space, the clamping assembly 200 can be adapted to packaging films of different sizes.

[0045] Reference Figure 2 , Figure 3 and Figure 4 As shown, each clamping assembly 200 includes a connecting block 210, a lifting component 220 and a stretching component 230, wherein the stretching component 230 includes a stretching driver, a first clamping jaw 232 and a second clamping jaw 233, and the stretching driver can drive the first clamping jaw 232 to move closer to or farther from the second clamping jaw 233, so that the first clamping jaw 232 and the second clamping jaw 233 can clamp the packaging film together. The lifting component 220 is connected to the connecting block 210, and the lifting component 220 is transmission-connected with the stretching component 230 to drive the stretching component 230 to rise and fall, and cooperate with the stretching component 230 to clamp the packaging film, thereby applying tension to the packaging film, so that the packaging film is transported to the wrapping space, which is conducive to reducing the influence of static electricity and viscosity on the transportation of the packaging film.

[0046] Compared with packaging equipment in which the packaging film relies on its own weight to fall into the winding space, the packaging film clamping device can clamp and pull the packaging film to transport the packaging film to the winding space. The transportation is more stable and reliable, which is beneficial to reduce the influence of static electricity and viscosity on the packaging film, so as to ensure that the packaging film can penetrate into the winding space and be rolled together with the mattress, so as to improve the packaging efficiency of the mattress. The packaging film clamping device can be applied to packaging equipment such as mattress rolling machines.

[0047] Reference Figure 2 and Figure 3As shown, it can be understood that a sliding groove 110 is provided on the cross bar 100, and the two ends of the sliding groove 110 are arranged along the left and right directions. The connecting block 210 is engaged with the sliding groove 110 to ensure the stable connection between the connecting block 210 and the sliding groove 110, so as to avoid the problem that the connecting block 210 escapes from the sliding groove 110 and causes the opening and closing component 230 or the lifting component 220 to fall off. The connecting block 210 is slidingly connected to the sliding groove 110. Through the sliding connection between the connecting block 210 and the sliding groove 110, the relative position relationship of the two clamping components 200 can be conveniently adjusted to adapt to packaging films of different sizes and specifications, which is beneficial to improve the applicability of the packaging film clamping device to packaging films of different sizes and specifications.

[0048] Reference Figure 3 and Figure 4 As shown, the clamping assembly 200 also includes a fastener 240, and the connecting block 210 is provided with a screw hole 211, and the screw hole 211 is extended forward or backward. The fastener 240 can be a threaded member, and the fastener 240 is threadedly connected to the screw hole 211. By tightening or loosening the fastener 240, the fastener 240 can be brought into contact with or separated from the cross bar 100. When the fastener 240 is brought into contact with the cross bar 100, the relative position relationship between the cross bar 100 and the connecting block 210 can be fixed by the friction force between the fastener 240 and the cross bar 100.

[0049] Reference Figure 3 and Figure 4 As shown, after the user slides the connecting block 210 to the preset position of the cross bar 100, the fastener 240 can be screwed into the screw hole 211 to make the fastener 240 abut against the cross bar 100, thereby fixing the relative position relationship between the connecting block 210 and the cross bar 100 to ensure that the opening and closing component 230 can clamp the packaging film. When it is necessary to adjust the position of the clamping assembly 200 on the cross bar 100, the user can loosen the fastener 240 to separate the fastener 240 from the cross bar 100, thereby eliminating the obstruction of the fastener 240 to the sliding of the connecting block 210. Through the sliding connection between the connecting block 210 and the sliding groove 110, the relative position relationship of the two clamping assemblies 200 can be adjusted to adapt to packaging films of different sizes.

[0050] It should be understood that, as another embodiment, the packaging film clamping device also includes a transverse drive, which is connected to the cross bar 100 and is transmission-connected to the connecting block 210 to drive the connecting block 210 to slide left and right along the cross bar 100, thereby adjusting the spacing between the two clamping assemblies 200 to adapt to packaging films of different sizes, and through the left and right sliding of the opening and closing drive relative to the packaging film, the packaging film can enter or exit the clamping cavity between the first jaw 232 and the second jaw 233, thereby achieving stable clamping of the packaging film, or achieving separation of the first jaw 232 and the second jaw 233 from the packaging film.

[0051] The lateral drive can be a linear drive mechanism such as a cylinder, a screw slider mechanism, an electric push rod, etc.

[0052] Reference Figure 2 and Figure 3 As shown, it can be understood that in this embodiment, the lifting component 220 can be a cylinder, and the lifting component 220 includes a fixed end and a movable end. The fixed end can be fixedly connected to the connecting block 210 through an L-shaped block, and the movable end is located below the fixed end and is connected to the tensioning component 230. Through the extension and retraction of the movable end relative to the fixed end, the tensioning component 230 can be driven to extend and retract and lift relative to the cross bar 100.

[0053] Reference Figure 2 and Figure 3 As shown, it can be understood that the first clamping jaw 232 and the second clamping jaw 233 are connected to one end away from the lifting component 220 with a clip 235. As the first clamping jaw 232 opens and closes relative to the second clamping jaw 233, the two clips 235 can open and close with each other. The provision of the two clips 235 is beneficial to increase the contact area between the opening and closing component 230 and the packaging film, so as to achieve stable clamping and pulling of the packaging film, to achieve stable transportation of the packaging film, so that the packaging film can penetrate into the winding space of the winding machine, and realize the packaging operation of the mattress with the packaging film.

[0054] Reference Figure 2 and Figure 3 As shown, in one of the clamping assemblies 200, the first clamping jaw 232 and the second clamping jaw 233 are both arranged toward the other clamping assembly 200, that is, the two groups of first clamping jaws 232 and second clamping jaws 233 are arranged facing each other, and the first clamping jaws 232 and the second clamping jaws 233 are both arranged horizontally, which is conducive to achieving stable clamping of the packaging film located between the two clamping assemblies 200. In the clamping assembly 200 located on the left, the first clamping jaw 232 and the second clamping jaw 233 are both extended to the right, and in the clamping assembly 200 located on the right, the first clamping jaw 232 and the second clamping jaw 233 are both extended to the left. The two clips 235 are arranged in the up-down direction, that is, the clips 235 are arranged at right angles to the first clamping jaw 232 or the second clamping jaw 233.

[0055] Reference Figure 2 and Figure 3 As shown, the packaging film clamping device is connected with the first clamping jaw 232 or the second clamping jaw 233 through the clamping piece 235, which is beneficial to enhancing the conveying guidance of the packaging film. The clamping piece 235 and the packaging film can be inserted into the winding space together to ensure that the packaging film can be inserted into the winding space of the winding machine to achieve the packaging of the mattress. With the separation of the first clamping jaw 232 and the second clamping jaw 233, the two clamping pieces 235 can be moved away from each other. With the upward movement of the lifting component 220, the clamping piece 235 can be withdrawn from the winding space to prepare for the next clamping and conveying operation.

[0056] Reference Figure 1 and Figure 2 As shown, it is understandable that, considering that the two clips 235 need to pass through the insertion port 310, and the wrapping machine is generally provided with a belt conveyor mechanism at the front and rear ends of the insertion port 310, in order to avoid the problem of the opening of the clip 235 colliding with the belt conveyor mechanism. The opening and closing component 230 also includes a shell 231, a first clamping jaw 232 is rotatably connected to the shell 231, and a second clamping jaw 233 is fixedly connected to the shell 231, that is, the opening of the two clips 235 can be achieved only by rotating the first clamping jaw 232 relative to the shell 231 in a single direction, which is conducive to reducing the opening angle of the two clips 235 and avoiding the problem of the clip 235 colliding with other components in the wrapping machine.

[0057] Reference Figure 2 and Figure 3 As shown, it can be understood that the opening and closing component 230 also includes a third jaw 234, which is rotatably connected to the shell 231, and the opening and closing driver is used to drive the first jaw 232 and the third jaw 234 to rotate synchronously so that the first jaw 232 and the third jaw 234 are close to or away from each other.

[0058] Reference Figure 2 and Figure 3 As shown, specifically, the third jaw 234 and the first jaw 232 are located on the same horizontal plane, the second jaw 233 is fixedly connected to the lower end of the shell 231, the second jaw 233 and the first jaw 232 and the second jaw 233 are arranged alternately up and down, and the second jaw 233 is located between the first jaw 232 and the third jaw 234.

[0059] Reference Figure 2 and Figure 3 As shown, the opening and closing component 230 has a clamping state and an opening state. The clamping state is that the third clamping jaw 234 is closed with the first clamping jaw 232, and the two clamping pieces 235 are closed with each other. The opening state is that the third clamping jaw 234 is separated from the first clamping jaw 232, and the two clamping pieces 235 are separated from each other.

[0060] Reference Figure 2 and Figure 3As shown, in the open state, the third clamping jaw 234 and the first clamping jaw 232 are away from each other, and the first clamping jaw 232 and the second clamping jaw 233 are away from each other, so that the two clips 235 are separated from each other, and the packaging film can be unwound between the first clamping jaw 232 and the second clamping jaw 233. In the clamping state, the opening and closing drive can drive the first clamping jaw 232 to approach the second clamping jaw 233, so that the two clips 235 are closed together, and the third clamping jaw 234 and the first clamping jaw 232 are close to each other, and the clamping force of the two clips 235 and the clamping force of the first clamping jaw 232 and the third clamping jaw 234 are used to jointly realize the clamping function of the packaging film, which is conducive to improving the clamping stability of the packaging film, so as to realize the stable transportation of the packaging film.

[0061] Reference Figure 2 and Figure 3 As shown, the packaging film clamping device is helpful to enhance the clamping stability of the packaging film and reduce the opening angle of the two clips 235 by setting the opening and closing component 230, so as to avoid the problem that the clips 235 collide with other components in the wrapping machine. Under the driving action of the lifting component 220, the clips 235 can drive the packaging film to pass through the insertion port 310 together to ensure that the packaging film stably penetrates into the wrapping space, and the packaging film and the mattress are wrapped together in the wrapping space to realize the packaging of the mattress.

[0062] It is understandable that in order to enhance the clamping stability of the packaging film by the opening and closing component 230, an anti-skid layer is connected to one end of the third clamping jaw 234 facing the first clamping jaw 232. Under the driving action of the opening and closing driver, the third clamping jaw 234 can be closed relative to the first clamping jaw 232 to achieve clamping of the packaging film. The anti-skid layer can fit with the packaging film, thereby enhancing the clamping effect of the packaging film. During the transportation of the packaging film, it is helpful to reduce the relative slippage between the packaging film and the opening and closing component 230.

[0063] The anti-slip layer can be made of materials with good anti-slip properties such as rubber layer and cloth.

[0064] Reference Figure 1 As shown, it can be understood that a wrapping machine according to an embodiment of the utility model comprises: a frame 300 and the packaging film clamping device shown in the above embodiment. The frame 300 is provided with a wrapping space, and the upper end of the wrapping space is connected to an inlet 310. The cross bar 100 is located above the inlet 310, and the lifting component 220 can drive the opening and closing component 230 to move closer to or away from the inlet 310.

[0065] Reference Figure 1As shown, two clamping assemblies 200 are respectively connected to both ends of the cross bar 100, and the clamping assemblies 200 include a connecting block 210, a lifting component 220 and an opening and closing component 230. The connecting block 210 is movably connected to the cross bar 100 to drive the two clamping assemblies 200 to move closer or farther away. According to packaging films of different sizes, the user can adjust the spacing between the two clamping assemblies 200 to ensure that the clamping assemblies 200 can clamp packaging films of different sizes. The opening and closing driver can drive the first clamping jaw 232 to open and close relative to the second clamping jaw 233, that is, the first clamping jaw 232 and the second clamping jaw 233 can jointly clamp the packaging film. The lifting component 220 is connected to the connecting block 210, and the lifting component 220 is connected to the connecting block 210. Component 220 is transmission-connected with opening and closing component 230 to drive opening and closing component 230 to rise and fall. Lifting component 220 can drive opening and closing component 230 to approach or move away from inlet 310, and cooperate with opening and closing component 230 to clamp the packaging film, thereby exerting pulling force on the packaging film, so that the packaging film is transported to the wrapping space. Compared with the packaging equipment in which the packaging film falls into the wrapping space by its own weight, the packaging film clamping device can reduce the influence of static electricity and viscosity on the transportation of the packaging film by clamping and pulling the packaging film, so that the packaging film is transported to the wrapping space, and the transportation is more stable and reliable, so as to ensure that the packaging film can penetrate into the wrapping space and be wrapped together with the mattress, so as to improve the packaging efficiency of the mattress.

[0066] Reference Figure 1 As shown, it can be understood that the wrapping machine also includes a unwinding component 400, which is used to unwind the packaging film between the two clamping components 200, and cooperates with the positioning of the two clamping components 200 on the cross bar 100, and the clamping action of the opening and closing component 230, so that the packaging film clamping device can clamp the packaging film. Under the driving action of the lifting component 220, the packaging film can pass through the insertion port 310 and enter the wrapping space to realize the common wrapping of the packaging film and the mattress.

[0067] Reference Figure 1 As shown, the unwinding assembly 400 includes a plurality of winding rollers, at least one of which has its left and right ends connected to two retaining frames 500 respectively, and the winding rollers are arranged below the cross bar 100 and parallel to the cross bar 100. After being unrolled, the packaging film can pass through the plurality of winding rollers so that the packaging film is transported to the packaging film clamping device and unrolled between the two clamping assemblies 200, and the packaging film is clamped and transported through the cooperation of the lifting component 220 and the opening and closing component 230.

[0068] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A packaging film clamping device, characterized in that: include: Crossbar(100); Two clamping assemblies (200) are provided, and the two clamping assemblies (200) are respectively connected to the two ends of the cross bar (100); each clamping assembly (200) comprises a connecting block (210), a lifting component (220) and an opening and closing component (230); the lifting component (220) is connected to the connecting block (210); the lifting component (220) is transmission-connected with the opening and closing component (230) to drive the opening and closing component (230) to rise and fall; the opening and closing component (230) comprises an opening and closing driver, a first clamping jaw (232) and a second clamping jaw (233); the opening and closing driver is used to drive the first clamping jaw (232) to open and close relative to the second clamping jaw (233); the connecting block (210) is movably connected to the cross bar (100) to drive the two clamping assemblies (200) to move closer to or farther from each other.

2. The packaging film clamping device according to claim 1, characterized in that: The crossbar (100) is provided with a sliding groove (110), and the connecting block (210) is slidably connected to the sliding groove (110).

3. The packaging film clamping device according to claim 2, characterized in that: The clamping assembly (200) further comprises a fastener (240); the connection block (210) is provided with a screw hole (211); the fastener (240) is threadedly connected to the screw hole (211); and the fastener (240) can abut against or separate from the cross bar (100).

4. The packaging film clamping device according to claim 1, characterized in that: In one of the clamping assemblies (200), the first clamping jaw (232) and the second clamping jaw (233) are both arranged toward the other clamping assembly (200).

5. The packaging film clamping device according to claim 4, characterized in that: One end of the first clamping jaw (232) and the second clamping jaw (233) away from the lifting component (220) is connected to a clamping piece (235), and the two clamping pieces (235) are arranged in the up-down direction.

6. The packaging film clamping device according to claim 5, characterized in that: The opening and closing component (230) further comprises a shell (231), the first clamping jaw (232) is rotatably connected to the shell (231), and the second clamping jaw (233) is fixedly connected to the shell (231).

7. The packaging film clamping device according to claim 6, characterized in that: The opening and closing component (230) further comprises a third clamping jaw (234), wherein the third clamping jaw (234) is rotatably connected to the housing (231), and the opening and closing driver is used to drive the first clamping jaw (232) and the third clamping jaw (234) to move closer to or farther from each other; The tensioning and closing component (230) has a clamping state and an opening state. The clamping state is that the third clamping jaw (234) is closed with the first clamping jaw (232), and the two clamping pieces (235) are closed with each other. The opening state is that the third clamping jaw (234) is separated from the first clamping jaw (232), and the two clamping pieces (235) are separated with each other.

8. The packaging film clamping device according to claim 7, characterized in that: An end of the third clamping jaw (234) facing the first clamping jaw (232) is connected to an anti-slip layer.

9. Wrapping machine, characterized by: include: The frame (300) is provided with a wrapping space, and the upper end of the wrapping space is connected to an inlet (310); According to the packaging film clamping device as described in any one of claims 1 to 8, the cross bar (100) is located above the insertion port (310), and the lifting component (220) can drive the opening and closing component (230) to move closer to or away from the insertion port (310).

10. The wrapping machine according to claim 9, characterized in that: The wrapping machine further comprises an unwinding assembly (400), wherein the unwinding assembly (400) is used to unwind the packaging film between the two clamping assemblies (200).

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