Tension adjusting assembly of zipper bag making machine

Abstract

The utility model discloses a tension adjusting assembly of a zipper bag making machine, which belongs to the technical field of zipper bag making machines and comprises a fixing frame, a tension adjusting unit and an adjusting part. The tension adjusting unit comprises a rotating shaft, a fixing strip and a tension roller; the adjusting piece is used for driving the rotating shaft to rotate; the rotating shaft is driven to rotate through the adjusting piece, the multiple tension rollers between the two fixing strips can be driven to push the plastic film, and therefore the tension borne by the plastic film can be increased, and the tension borne by the plastic film can be increased by controlling the rotating angle of the rotating shaft driven by the adjusting piece; compared with the prior art that the tension can be adjusted only by operating two adjusting discs separately, the plastic film can be pushed through the tension roller by driving the rotating shaft to rotate through the adjusting piece, so that the tension borne by the plastic film can be adjusted, the steps needed for adjusting the tension are simplified, and the production efficiency is improved. And the operation steps and the time cost of workers are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of zipper bag making machines, and in particular relates to a tension regulating component of a zipper bag making machine. Background Art

[0002] Zipper bag making machine is a kind of equipment used to produce stand-up bags, which are usually used to produce various types of packaging bags, such as food packaging bags, cosmetic packaging bags, etc. The machine is able to perform continuous bag making process on plastic film, including printing, forming, sealing and cutting steps. The tension adjustment component is one of the components, which is used to adjust the tension of the plastic film to ensure stability and accuracy during the bag making process.

[0003] CN206153086U discloses a coated paper tension adjustment device, including a guide roller, an adjustment roller, a bearing seat, a mounting plate, a front seat, an adjustment seat, a rear seat, a threaded rod, an adjustment disk, a connecting plate, a rotating shaft, a fixing bolt, a handle and a scale line; the device has the following problems:

[0004] When adjusting the tension, the staff needs to rotate the two adjustment disks respectively to drive the adjustment roller to move and then complete the tension adjustment. This operation is relatively cumbersome. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide a tension adjustment component for a zipper bag making machine to solve the technical problem of complicated tension adjustment operation in the background technology.

[0006] In order to achieve the above object, the utility model provides the following technical solutions:

[0007] The utility model provides a tension adjustment component for a zipper bag making machine, the tension adjustment component comprising a fixed frame, a tension adjustment unit and an adjustment member; the fixed frame has two opposite vertical side walls; the tension adjustment unit comprises a rotating shaft, a fixing bar and a tension roller; the rotating shafts are rotatably connected to the corresponding vertical side walls respectively; the rotating shafts are arranged horizontally, and the rotating shafts are perpendicular to the vertical side walls; the fixing bars are respectively connected to the corresponding rotating shafts, and the two fixing bars are parallel to each other; the tension roller is evenly arranged between the two fixing bars; the two ends of the tension roller are respectively rotatably connected to the corresponding fixing bars; the tension roller is parallel to the rotating shaft; the adjustment member is connected to the fixed frame; the power end of the adjustment member is connected to the rotating shaft.

[0008] Furthermore, the number of the tension rollers is two.

[0009] Furthermore, the opposite side walls of the two fixed bars are each provided with a slide groove; the tension adjustment unit also includes a slider, a power motor and a screw; the sliders are respectively connected to the two ends of the tension roller; and the slider is slidably connected to the slide groove; the screw is arranged in one of the slide grooves, and one end of the screw is rotatably connected to the side wall of the slide groove; the screw has two thread surfaces with different thread directions; the two sliders in the same slide groove are respectively threadedly sleeved on the corresponding thread surfaces of the screw; the power motor is connected to one end of the fixed bar; the power end of the power motor rotates and extends into the slide groove and is coaxially connected to the other end of the screw.

[0010] Furthermore, the tension adjustment unit also includes a positioning rod; the positioning rod is arranged in another slide groove, and the slider in the slide groove is slidably sleeved on the positioning rod along the length direction of the fixing bar; the positioning rod is parallel to the screw rod.

[0011] Furthermore, a guide roller is rotatably connected between two opposite vertical side walls of the fixed frame; the guide roller is parallel to the tension roller.

[0012] Furthermore, the fixing frame includes a base and two fixing plates; the base is arranged horizontally; and the two fixing plates are vertically connected to the base.

[0013] Furthermore, the base includes evenly arranged support bars; the support bars are connected to the bottom ends of the two fixing plates.

[0014] Furthermore, the support bar is made of steel.

[0015] The beneficial effects of the utility model are:

[0016] In the present application, by driving the rotating shaft to rotate through the adjusting member, it is possible to drive several tension rollers between the two fixed bars to push the plastic film, thereby increasing the tension exerted on the plastic film. By controlling the rotation angle of the rotating shaft driven by the adjusting member, the rotation amplitude of several tension rollers can be increased, and then the tension exerted on the plastic film can be increased. Compared with the prior art that requires operating two adjustment disks separately to adjust the tension, the present application drives the rotating shaft to rotate through the adjusting member, and can push the plastic film through the tension rollers, thereby adjusting the tension exerted on the plastic film, simplifying the steps required for adjusting the tension and reducing the operating steps and time cost of the staff.

[0017] Other advantages, objectives and features of the utility model will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art can be taught from the practice of the utility model. The objectives and other advantages of the utility model can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the purpose, technical solution and beneficial effects of the utility model clearer, the utility model is described with the following drawings:

[0019] Figure 1 It is a three-dimensional diagram of the utility model;

[0020] Figure 2 A three-dimensional diagram of the tension adjustment unit of the utility model;

[0021] Figure 3 A three-dimensional diagram of the structure in the tension adjustment unit of the utility model;

[0022] Figure 4 This is a three-dimensional diagram of the guide rod of the utility model being located in the slide groove.

[0023] The markings in the accompanying drawings are as follows: fixed frame 1, tension adjustment unit 2, adjustment member 3, rotating shaft 4, fixed bar 5, tension roller 6, slide groove 7, slider 8, power member 9, connecting shaft 10, connecting groove 11, screw 12, positioning rod 13, guide roller 14, guide shaft 15, base 16, fixed plate 17. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0025] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present invention. However, it is apparent to those skilled in the art that these specific details are not necessary to implement the present invention. In other examples, in order to avoid obscuring the present invention, well-known structures, circuits, materials or methods are not specifically described.

[0026] Throughout the specification, references to "one embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment," "an embodiment," "an example," or "an example" appearing in various places throughout the specification do not necessarily all refer to the same embodiment or example. In addition, particular features, structures, or characteristics may be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. In addition, it will be appreciated by those of ordinary skill in the art that the figures provided herein are for illustrative purposes and that the figures are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] In the description of the present invention, it should be understood that the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the scope of protection of the present invention.

[0028] Embodiment 1:

[0029] In the prior art, when adjusting the tension, the staff needs to rotate the two adjustment disks respectively to drive the adjustment roller to move and then complete the tension adjustment. This operation is relatively cumbersome. Therefore, this embodiment provides a zipper bag making machine tension adjustment component to improve the problem of cumbersome operation during the tension adjustment process.

[0030] like Figures 1 to 4 As shown, the utility model provides a tension adjustment component for a zipper bag making machine, the tension adjustment component comprises a fixed frame 1, a tension adjustment unit 2 and an adjustment member 3; the fixed frame 1 has two opposite vertical side walls; the tension adjustment unit 2 comprises two rotating shafts 4, two fixed bars 5 and a plurality of tension rollers 6; the two rotating shafts 4 are respectively rotatably connected to the corresponding vertical side walls; the rotating shafts 4 are horizontally arranged, and the rotating shafts 4 are perpendicular to the vertical side walls; the fixed bars 5 are respectively fixedly connected to the corresponding rotating shafts 4, and the two fixed bars 5 are parallel to each other; a plurality of tension rollers 6 are evenly arranged between the two fixed bars 5 along the length direction of the fixed bars 5; the two ends of the tension roller 6 are respectively rotatably connected to the corresponding fixed bars 5; the tension roller 6 is parallel to the rotating shaft 4; the adjustment member 3 is connected to the fixed frame 1; the power end of the adjustment member is connected to the rotating shaft 4.

[0031] Specifically, the two opposite vertical side walls can be formed in a manner that the shape of the fixing frame 1 can be a U-shaped frame structure, and two opposite vertical side walls can be formed in the U-shaped frame structure; of course, it can also be a box structure, and then a through groove is opened on the box structure horizontally running through both ends, and the shape of the through groove is a rectangular parallelepiped, which can also form two opposite vertical side walls.

[0032] Specifically, two opposite vertical side walls are respectively provided with horizontal rotation holes; the rotation holes penetrate to the outer wall of the fixing frame 1; one end of the rotation shaft 4 is coaxially rotatably connected in the corresponding rotation hole; the two fixing bars 5 are fixedly connected to the other end of the corresponding rotation shaft 4 at the center of the opposite side, and the fixing bars 5 are perpendicular to the rotation shaft 4.

[0033] Specifically, the adjusting member 3 is a servo motor, which is fixedly connected to the side of the fixing frame 1 away from the vertical side wall. The power end of the servo motor rotates and extends into one of the rotating holes, and the power end of the servo motor is coaxially connected to the rotating shaft 4 in the rotating hole; the rotating shaft 4 is driven to rotate by the servo motor, thereby driving the fixing bar 5 to rotate; the servo motor can monitor and adjust the position, speed and torque in real time through the feedback system, thereby achieving high-precision control, so that it can achieve more precise motion control in industrial applications.

[0034] The principle and beneficial effects of the above technical solution:

[0035] In a specific implementation, the plastic film coming out of the unwinding device is passed between adjacent tension rollers 6 in a horizontal S shape, and then enters the winding device. In the initial state, the fixed strip 5 is in a horizontal state, and the several tension rollers 6 between the two fixed strips 5 are also in a horizontal state; when the tension on the plastic film needs to be increased, the adjusting member 3 can be used to drive the rotating shaft 4 to rotate, thereby driving the fixed strip 5 connected to the rotating shaft 4 to follow the rotation, so that the fixed strip 5 rotates around the axis of the rotating shaft 4, thereby driving the several tension rollers 6 to follow the rotation. Since the plastic film passes between adjacent tension rollers 6, the plastic film will contact the tension rollers 6. When the several tension rollers 6 follow the rotation, the tension rollers 6 can push the plastic film, thereby increasing the tension on the plastic film, keeping the plastic film flat, and avoiding wrinkling caused by insufficient or excessive tension.

[0036] In the present application, by driving the rotating shaft 4 to rotate through the adjusting member 3, it is possible to drive several tension rollers 6 between the two fixed bars 5 to push the plastic film, thereby increasing the tension exerted on the plastic film. By controlling the rotation angle of the rotating shaft 4 driven by the adjusting member 3, the rotation amplitude of several tension rollers 6 can be increased, thereby increasing the tension exerted on the plastic film. Compared with the prior art that requires operating two adjustment disks separately to adjust the tension, the present application drives the rotating shaft 4 to rotate through the adjusting member 3, and can push the plastic film through the tension rollers 6, thereby adjusting the tension exerted on the plastic film, simplifying the steps required for adjusting the tension and reducing the operating steps and time cost of the staff.

[0037] At the same time, the rotation angle of the rotating shaft 4 is driven by the servo motor, so that the rotation amplitude of the tension roller 6 can be accurately controlled, and then the thrust can be controlled, so that the tension of the plastic film can be accurately adjusted.

[0038] In this embodiment, the number of the tension rollers 6 is two.

[0039] The principle and beneficial effects of the above technical solution:

[0040] Since the number of tension rollers 6 is set to two, before adjusting the tension, the plastic film coming out of the unwinding device passes between the two tension rollers 6 and enters the winding device. When the tension needs to be adjusted, the adjusting member 3 drives the rotating shaft 4 to rotate, so that the fixed bar 5 rotates around the axis of the rotating shaft 4, thereby driving the two tension rollers 6 to rotate accordingly. The two tension rollers 6 can push the plastic film at the same time, thereby increasing the tension on the plastic film, and the magnitude of the tension changes with the rotation angle of the rotating shaft 4. The greater the rotation angle of the rotating shaft 4, the greater the tension on the plastic film. Only two tension rollers 6 are provided to adjust the magnitude of the tension on the plastic film, which can save manufacturing costs. At the same time, compared with providing multiple tension rollers 6, there is no need to make the plastic film pass through the adjacent tension rollers 6 in a transverse S shape in turn, but the plastic film can be directly passed through the two tension rollers 6, which can save time and improve production efficiency.

[0041] In this embodiment, Figure 2-4 As shown, the opposite side walls of the two fixing bars 5 are each provided with a slide groove 7; the slide groove 7 is provided along the length direction of the fixing bar 5; the tension adjustment unit 2 further includes four sliders 8, a power motor 9 and a screw 12; each slider 8 is connected to both ends of the tension roller 6; and the slider 8 is slidably connected to the slide groove 7; in each slide groove 7, there are two sliders 8; the screw 12 has two thread surfaces with different thread directions; the screw 12 is arranged in one of the slide grooves 7, and one end of the screw 12 is rotatably connected to the side wall of the slide groove 7; the arrangement direction of the screw 12 is parallel to the length direction of the fixing bar 5; in the same slide groove 7 The two sliders 8 are both provided with threaded holes, and the two sliders 8 are threadedly connected to the corresponding threaded surfaces of the screw 12 through the threaded holes; the power motor 9 is fixedly connected to one end of the fixing bar 5; the power end of the power motor 9 rotates and extends into the slide groove 7 and is coaxially connected to the other end of the screw 12; the power motor 9 is used to drive the screw 12 to rotate so that the two sliders 8 in the slide groove 7 are moved closer or farther away; the power motor 9 adopts a DC motor, which can change the rotation direction by changing the direction of the current or changing the polarity of the electrode. This feature makes the DC motor very flexible in applications where the rotation direction needs to be changed frequently.

[0042] Specifically, both ends of each tension roller 6 are coaxially fixedly connected with a connecting shaft 10; each slider 8 has a cylindrical connecting groove 11 on the side facing the outside of the slide groove 7; the opening direction of the connecting groove 11 is perpendicular to the direction of the slider 8, and the connecting groove 11 is arranged in the horizontal direction; each tension roller 6 is coaxially rotatably connected to the corresponding connecting groove 11 through the connecting shaft 10 at the end.

[0043] The principle and beneficial effects of the above technical solution:

[0044] The screw 12 is driven to rotate by the power motor 9. Since the two sliders 8 are respectively threadedly connected to the two corresponding thread surfaces of the screw 12, when the screw 12 rotates, the two sliders 8 can move away from each other, so that the distance between the two tension rollers 6 can be expanded, so that under the premise that the tension roller 6 is in the state of pushing the plastic film, the plastic film can be further pushed outward, thereby further increasing the tension on the plastic film;

[0045] When the tension on the plastic film needs to be reduced, the power end of the power motor 9 is controlled to rotate in the opposite direction, thereby driving the screw 12 to change the rotation direction, and then the two sliders 8 approach each other, so that the two tension rollers 6 approach each other, shortening the distance between the two tension rollers 6, which can reduce the degree of outward push on the plastic film, thereby reducing the tension on the plastic film.

[0046] At the same time, since the tension roller 6 is rotatably connected to the connecting groove 11 of the slider 8 through the connecting shafts 10 at both ends, when the plastic film passes through the two tension rollers 6, the tension roller 6 can rotate around the axis of the connecting shaft 10, thereby reducing the resistance of the tension roller 6 to the plastic film, making the plastic film smoother when leaving the two tension rollers 6, and reducing the problem of wrinkling of the plastic film due to excessive resistance.

[0047] In this embodiment, Figure 4 As shown, the tension adjustment unit 2 also includes a positioning rod 13; the two ends of the positioning rod 13 are fixedly connected to the opposite inner walls of another slide groove 7; and the slider 8 in the slide groove 7 is slidably mounted on the positioning rod 13 along the length direction of the fixing strip 5 through the opening of the positioning hole; the positioning rod 13 is parallel to the screw rod 12.

[0048] The principle and beneficial effects of the above technical solution:

[0049] When the power motor 9 drives the screw 12 to rotate and thus drives the slider 8 to slide on the screw 12, the two sliders 8 at the other end of the tension roller 6 can slide along the positioning rod 13 through the positioning holes, thereby ensuring the synchronization of the movement of the sliders 8 at both ends of the tension roller 6, avoiding the tension roller 6 from being in a skewed state when moving under the action of the slider 8, thereby avoiding the situation where the tension applied by the tension roller 6 to the plastic film will be uneven.

[0050] Embodiment 2:

[0051] This embodiment is based on the first embodiment. Figure 1 As shown, a guide roller 14 is rotatably connected between two opposite vertical side walls of the fixing frame 1 ; the guide roller 14 is parallel to the tension roller 6 .

[0052] Specifically, two opposite vertical side walls are each provided with a horizontal guide hole; both ends of the guide roller 14 are coaxially fixedly connected with the guide shaft 15; and one end of each guide shaft 15 away from the guide roller 14 is coaxially rotatably connected in the guide hole.

[0053] The principle and beneficial effects of the above technical solution:

[0054] The setting of the guide roller 14 can guide the plastic film leaving the two tension rollers 6 and keep it in a stable direction. This guidance can ensure that the plastic film can maintain the correct position and direction to enter the winding device after the tension is adjusted.

[0055] Embodiment three:

[0056] This embodiment is based on the first embodiment. Figure 1 As shown, the fixing frame 1 includes a base 16 and two fixing plates 17; the base 16 is arranged horizontally; the two fixing plates 17 are fixedly connected vertically to the base 16; the two fixing plates 17 have opposite vertical side walls, which are the vertical side walls mentioned above.

[0057] The principle and beneficial effects of the above technical solution:

[0058] The base 16 is arranged horizontally, providing a solid foundation for the entire structure. Two fixing plates 17 are fixedly connected to the base 16 and vertically supported above the base 16, making the structure of the entire fixing frame 1 more stable.

[0059] In this embodiment, Figure 1 As shown, the base 16 includes evenly arranged support bars; the number of the support bars is four; the four support bars are arranged horizontally and parallel to each other; the four support bars are fixedly connected to the bottom ends of the two fixed plates 17; the support bars are made of steel; steel usually has high strength and hardness, can withstand large loads and pressures, and thus can provide good support stability.

[0060] The principle and beneficial effects of the above technical solution:

[0061] The four support bars are arranged horizontally and parallel to each other, thereby ensuring the stability and balance of the base 16. The base 16 can evenly bear the weight and pressure from the fixing plate 17, effectively dispersing the pressure, reducing the load of a single support point, and thus improving the bearing capacity and stability of the base 16.

[0062] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the utility model.

Claims

1. A tension adjustment component for a zipper bag making machine, characterized in that: The tension adjustment assembly comprises: a fixing frame having two opposite vertical side walls; A tension adjustment unit, the tension adjustment unit comprising a rotating shaft, a fixing bar and a tension roller; The rotating shafts are rotatably connected to the corresponding vertical side walls respectively; the rotating shafts are arranged horizontally, and the rotating shafts are perpendicular to the vertical side walls; The fixing bars are respectively connected to the corresponding rotating shafts, and the two fixing bars are parallel to each other; The tension roller is evenly arranged between the two fixed bars; the two ends of the tension roller are rotatably connected to the corresponding fixed bars respectively; the tension roller is parallel to the rotating shaft; An adjusting member is connected to the fixing frame; a power end of the adjusting member is connected to the rotating shaft.

2. A tension adjustment assembly for a zipper bag making machine according to claim 1, characterized in that: The number of the tension rollers is two.

3. A tension adjustment assembly for a zipper bag making machine according to claim 2, characterized in that: The side walls opposite to the two fixing strips are respectively provided with a slide groove; The tension adjustment unit also includes a slider, a power motor and a screw; The sliders are respectively connected to the two ends of the tension roller; and the sliders are slidably connected to the slide grooves; The screw is arranged in one of the slide grooves, and one end of the screw is rotatably connected to the side wall of the slide groove; The screw has two thread surfaces with different thread directions; the two sliders in the same slide groove are respectively threadedly sleeved on the corresponding thread surfaces of the screw; The power motor is connected to one end of the fixing bar; the power end of the power motor rotates and extends into the slide slot and is coaxially connected to the other end of the screw rod.

4. A tension adjustment assembly for a zipper bag making machine according to claim 3, characterized in that: The tension adjustment unit also includes a positioning rod; The positioning rod is arranged in another sliding groove, and the sliding block in the sliding groove is slidably sleeved on the positioning rod along the length direction of the fixing strip; the positioning rod is parallel to the screw rod.

5. A zipper bag making machine tension adjustment assembly according to any one of claims 1 to 4, characterized in that : A guide roller is rotatably connected between two opposite vertical side walls of the fixed frame; the guide roller is parallel to the tension roller.

6. The tension adjustment assembly of a zipper bag making machine according to claim 1, characterized in that: The fixing frame comprises a base and two fixing plates; The base is arranged horizontally; The two fixing plates are vertically connected to the base.

7. A tension adjustment assembly for a zipper bag making machine according to claim 6, characterized in that: The base comprises evenly arranged support bars; the support bars are connected to the bottom ends of two fixing plates.

8. The tension adjustment assembly of a zipper bag making machine according to claim 7, characterized in that: The support bar is made of steel.

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