Film drawing device applied to bagging machine

Abstract

A film drawing device applied to a bagging machine comprises a bearing seat, a pressing wheel sliding block movably installed on the bearing seat, a driving shaft rotationally installed on the bearing seat, a pressing wheel shaft fixedly installed on the pressing wheel sliding block and a driving motor installed on one side of the bearing seat and used for driving the driving shaft to rotate. The driving shaft is rotationally installed on the bearing seat, the pressing wheel shaft is fixedly installed on the pressing wheel sliding block, meanwhile, the reticulated roller is fixedly installed on the driving shaft, the soft rubber pressing wheel is rotationally installed on the pressing wheel shaft, and when the driving shaft rotates, due to the fact that the pressing wheel shaft is fixed, the pressing wheel shaft can only drive the soft rubber pressing wheel to rotate; in this way, the situation that the driving shaft and the pressing wheel shaft deviate from each other to form a splayed shape can be avoided, the flexible rubber pressing wheel can be in full contact with the anilox roller all the time in cooperation with the flexibility of the flexible rubber pressing wheel, and therefore the film clamping effect is guaranteed, and normal operation of the working procedure is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging machines, in particular to a film-drawing device applied to a bagging machine. Background Art

[0002] With the rapid development of the packaging industry, the demand for automated packaging equipment is increasing. As a crucial component of packaging equipment, the bagging machine's degree of automation, stability, and efficiency are directly related to packaging results and production costs. The film-drawing device, a key component of the bagging machine, has a direct impact on its overall performance due to its design and technical level.

[0003] In the existing film drawing device, reference Figure 1 As shown, the fixed roller 14' and the movable roller 18' clamp the edge of the film to pull the film to move, the rotating shafts of the two rollers are parallel to each other, and the fixed roller 14' is driven to rotate by the motor 11', and the movable roller 18' applies a certain pressure to the film to clamp the film. Specifically, the rotating shafts of the fixed roller 14' and the movable roller 18' are both rotatably mounted on the bearing seat 5' through bearings, and the rotating shaft of the movable roller 18' can also cooperate with the elastic force of the limit spring to generate an upward thrust to make the movable roller 18' move closer to the fixed roller 14' to form a clamping effect.

[0004] However, in the above structure, when the rotating shaft of the fixed roller 14' rotates, the rotating shaft of the movable roller 18' will be driven to rotate at the same time by friction. After long-term use, it will be found that the rotating shafts of the fixed roller 14' and the movable roller 18' will gradually deviate outward under the action of pressure at the ends away from the bearings, so that the two mutually parallel rotating shafts are turned outward to form an "eight" shape. This will cause the contact area between the fixed roller 14' and the movable roller 18' to gradually become smaller, and the clamping effect on the film will gradually weaken, affecting normal use; in addition, when the edge of the film is clamped between the fixed roller 14' and the movable roller 18' for the first time, it is necessary to first move the movable roller 18' to separate it from the fixed roller 14', and then place the edge of the film between them. This operation method is relatively cumbersome and not easy to operate. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a film-drawing device applied to a bagging machine.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] The cam is secured to the chassis and is adapted to engage the driver's seat, wherein the cam is secured to the chassis and is adapted to engage the driver's seat, wherein the cam is secured to the chassis and is adapted to engage the driver's seat, wherein the cam is secured to the chassis and is adapted to engage the driver's seat, wherein the cam is secured to the chassis and is adapted to engage the driver's seat, wherein the cam is secured to the chassis and is adapted to engage the driver's seat, wherein the cam is secured to the chassis and is adapted to engage the driver's seat, wherein the cam is secured to the chassis and is adapted to engage the driver

[0008] In the present invention, the bearing seat is provided with a mounting hole for installing the driving shaft. The driving shaft is connected to the driving motor after passing through the mounting hole. First bearings are respectively provided at the two side ports of the mounting hole. The driving shaft rotates on the two first bearings.

[0009] Furthermore, the outwardly extending portion of the driving shaft is also provided with a thread structure, and the anilox roller thread is fitted on the thread structure.

[0010] Furthermore, the extended portion of the pressure wheel shaft is provided with at least two second bearings, and the soft rubber pressure wheel is fitted on the two second bearings.

[0011] In the utility model, the driving shaft and the driving motor are connected through a transmission mechanism, and the transmission mechanism includes a driving wheel installed at the driving end of the driving motor, a driven wheel installed on the driving shaft, and a motor base that covers the driving wheel and the driven wheel on the bearing base. The driving motor is fixedly mounted on the motor base, and the driving wheel and the driven wheel are driven by a belt transmission or a toothed belt transmission.

[0012] Furthermore, the transmission ratio of the transmission mechanism is adjusted by replacing the driving wheel and the driven wheel with different diameters.

[0013] In the utility model, the slide groove is opened to the side away from the driving motor and the side of the top of the bearing seat. A side cover is provided on the side of the bearing seat away from the driving motor, and a top cover is provided on the side of the top of the bearing seat. The side cover and the top cover restrict the pressure wheel slider in the slide groove so that the pressure wheel slider slides up and down. One end of the reset spring rests on the top cover, and the other end rests on the pressure wheel slider.

[0014] Furthermore, an adjustment mechanism for driving the pressure wheel slider to move is provided on the top of the bearing seat, and the adjustment mechanism includes an adjustment seat installed on the top cover, an adjustment shaft connected to the pressure wheel slider, and an adjustment handle connected to the top of the adjustment shaft. The bottom of the adjustment shaft is rotatably installed on the pressure wheel slider, and the top of the adjustment shaft extends upward through the top cover and the adjustment seat, and the adjustment handle passes horizontally through the protruding part of the top end of the adjusting shaft. An adjustment inclined surface is also provided on the top of the adjustment seat. Under normal circumstances, the adjustment handle is against the lowest end of the adjustment inclined surface under the action of a return spring. When the adjustment handle is rotated, the adjustment handle gradually rises along the adjustment inclined surface, and drives the pressure wheel slider and the soft rubber pressure wheel to rise through the adjusting shaft.

[0015] Furthermore, there are two groups of adjustment bevels, which are arranged opposite to each other on the top of the adjustment seat. The adjustment handles on both sides of the adjustment shaft are respectively engaged with the two groups of adjustment bevels. The top of the adjustment bevel is also provided with a limiting groove. After the adjustment handle is rotated to the top of the adjustment bevel, it can be stuck in the limiting groove to keep the pressure wheel slider and the soft rubber pressure wheel in a raised state.

[0016] The utility model has the following advantages and beneficial effects:

[0017] By rotatably installing the driving shaft on the bearing seat, and fixing the pressure wheel shaft on the pressure wheel slider, fixing the textured roller on the driving shaft, and rotatably installing the soft rubber pressure wheel on the pressure wheel shaft, when the driving shaft rotates, since the pressure wheel shaft is fixed, it can only drive the soft rubber pressure wheel to rotate, so as to avoid the driving shaft and the pressure wheel shaft deviating from each other to form an "eight" shape. Combined with the softness of the soft rubber pressure wheel, it can always maintain full contact with the textured roller, thereby ensuring the clamping effect of the film and the normal operation of the process.

[0018] In addition, the pressure wheel slider is limited in the slide groove by the top cover and the side cover, and the elastic force of the return spring makes the soft rubber pressure wheel press downward against the anilox roller. Through the adjustment mechanism set on the top cover, turning the adjustment handle on the adjustment mechanism can keep the pressure wheel slider and the soft rubber pressure wheel in a lifted state, thereby facilitating the clamping of the film and making the operation simpler and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below with reference to the accompanying drawings and embodiments:

[0020] Figure 1 It is a structural diagram of an existing film-drawing device in the background technology;

[0021] Figure 2 Schematic diagram of the structure of the film drawing device in this embodiment;

[0022] Figure 3 This is a disassembled diagram of the film-drawing device in this embodiment;

[0023] Figure 4 is a cross-sectional view of the film-drawing device in this embodiment;

[0024] Figure 5 Schematic diagram of the structure of the adjustment seat in this embodiment. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention, but the present invention is not limited to the following embodiments.

[0026] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0027] In addition, if there are descriptions involving "first" or "second" in the embodiments of the present invention, the descriptions of "first" or "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0028] like Figures 2 to 5 As shown, this embodiment discloses a film pulling device used on a bagging machine, including a bearing seat 17, a pressure wheel slider 16 movably mounted on the bearing seat 17, a driving shaft 7 rotatably mounted on the bearing seat 17, a pressure wheel shaft 14 fixedly mounted on the pressure wheel slider 16, and a driving motor 1 mounted on one side of the bearing seat 17 for driving the driving shaft 7 to rotate. One end of the driving shaft 7 and the pressure wheel shaft 14 extend outward and in parallel to the side away from the driving motor 1. The extended end of the driving shaft 7 is fixedly mounted with a textured roller 9, and the extended end of the pressure wheel shaft 14 is rotatably mounted with a soft rubber pressure wheel 12. A slide groove 171 is provided on the side of the bearing seat 17 away from the driving motor 1, and a return spring 22 is provided in the slide groove 171. The pressure wheel slider 16 is slidably mounted in the slide groove 171, and the return spring 22 pushes the pressure wheel slider 16 to move in the direction of the driving shaft 7 so that the soft rubber pressure wheel 12 presses against the textured roller 9.

[0029] In this embodiment, the bearing seat 17 is provided with a mounting hole 172 for installing the driving shaft 7. The driving shaft 7 is connected to the drive motor 1 after passing through the mounting hole 172. First bearings 6 are respectively provided at the two side ports of the mounting hole 172. The driving shaft 7 cooperates with the two first bearings 6 to realize rotation.

[0030] Furthermore, the outwardly extending portion of the driving shaft 7 is also provided with a threaded structure 71, and the anilox roller 9 is screwed together with the threaded structure 71 to be fixed. Specifically, in order to avoid loosening, a pin hole is also provided on the anilox roller 9, and the pin is passed through the pin hole and cooperated with the driving shaft 7 to completely fix the anilox roller 9 on the driving shaft 7.

[0031] Furthermore, the extended portion of the pressure wheel shaft 14 is provided with at least two second bearings 11 , and the soft rubber pressure wheel 12 rotates on the two second bearings 11 .

[0032] In this embodiment, the driving shaft 7 is connected to the driving motor 1 through a transmission mechanism 5. The transmission mechanism 5 includes a driving wheel 3 installed at the driving end of the driving motor 1, a driven wheel 4 installed on the driving shaft 7, and a motor base 2 that covers the driving wheel 3 and the driven wheel 4 on the bearing base 17. The driving motor 1 is fixedly mounted on the motor base 2. The driving wheel 3 and the driven wheel 4 are driven by a belt drive or a toothed belt drive. When belt drive is used, the driving wheel 3 and the driven wheel 4 are pulleys. The transmission ratio of the transmission mechanism 5 can be adjusted by replacing the driving wheel 3 and the driven wheel 4 with different diameters to achieve optimal transmission efficiency.

[0033] In this embodiment, in order to facilitate the installation of the pressure wheel slider 16, the slide groove 171 is set to open to the side away from the drive motor 1 and the side of the top of the bearing seat 17. After the pressure wheel slider 16 is installed, in order to facilitate limiting, a side cover 15 is provided on the side of the bearing seat 17 away from the drive motor 1, and a top cover 18 is provided on the side of the top of the bearing seat 17. The side cover 15 and the top cover 18 limit the pressure wheel slider 16 in the slide groove 171 so that the pressure wheel slider 16 can only slide up and down. Specifically, one end of the return spring 22 rests on the top cover 18, and the other end rests on the pressure wheel slider 16.

[0034] The top of the adjusting shaft 20 passes through the top cover 18 and the adjusting seat 19, and the adjusting handle 21 passes through the top of the adjusting shaft 20. The top of the adjusting seat 19 is also provided with an adjusting inclined surface 191. Under normal circumstances, the adjusting handle 21 is pressed against the lowest end of the adjusting inclined surface 191 by the action of the return spring 22. When the adjusting handle 21 is rotated, the adjusting handle 21 gradually rises along the adjusting inclined surface 191, and then drives the pressing wheel slider 16 to be lifted through the adjusting shaft 20, thereby separating the soft rubber pressing wheel 12 from the anilox roller 9.

[0035] Furthermore, there are two groups of adjustment bevels 191, which are oppositely arranged on the top of the adjustment seat 19. The adjustment handles 21 on both sides of the adjustment shaft 20 are respectively matched on the two groups of adjustment bevels 191. In addition, a limiting groove 192 is also provided at the top of the adjustment bevel 191. After the adjustment handle 21 is rotated to the top of the adjustment bevel 191, it can be stuck in the limiting groove 192 to keep the pressure wheel slider 16 in a raised state.

[0036] The above contents described in this specification are merely examples of the present invention. Those skilled in the art in the technical field to which the present invention belongs may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the contents of the present invention specification or exceed the scope defined by the claims, they shall fall within the scope of protection of the present invention.

Claims

1. A film stretching device used in a bagging machine, characterized in that: The invention comprises a bearing seat (17), a pressure roller slider (16) movably mounted on the bearing seat (17), a driving shaft (7) rotatably mounted on the bearing seat (17), a pressure roller shaft (14) fixedly mounted on the pressure roller slider (16), and a driving motor (1) mounted on one side of the bearing seat (17) for driving the driving shaft (7) to rotate, wherein one end of the driving shaft (7) and the pressure roller shaft (14) extend outwardly in parallel away from the driving motor (1), and the extended end of the driving shaft (7) is fixedly mounted on the bearing seat (17). A textured roller (9) is installed, and a soft rubber pressure roller (12) is rotatably installed on the extended end of the pressure roller shaft (14). A sliding groove (171) is provided on the side of the bearing seat (17) away from the driving motor (1), and a return spring (22) is provided in the sliding groove (171). The pressure roller slider (16) is slidably installed in the sliding groove (171), and the return spring (22) pushes the pressure roller slider (16) to move toward the driving shaft (7) so that the soft rubber pressure roller (12) is pressed against the textured roller (9).

2. The film stretching device used in a bagging machine according to claim 1, characterized in that: The bearing seat (17) is provided with a mounting hole (172) for mounting the driving shaft (7). The driving shaft (7) is connected to the drive motor (1) after passing through the mounting hole (172). First bearings (6) are respectively provided at two side ports of the mounting hole (172). The driving shaft (7) rotates by fitting on the two first bearings (6).

3. The film stretching device used in a bagging machine according to claim 2, characterized in that: The outwardly extending portion of the driving shaft (7) is further provided with a thread structure (71), and the anilox roller (9) is threadedly engaged with the thread structure (71).

4. The film stretching device used in a bagging machine according to claim 1, characterized in that: The extended portion of the pressure wheel shaft (14) is provided with at least two second bearings (11), and the soft rubber pressure wheel (12) is fitted on the two second bearings (11).

5. The film stretching device used in a bagging machine according to claim 2, characterized in that: The driving shaft (7) and the driving motor (1) are connected via a transmission mechanism (5), wherein the transmission mechanism (5) comprises a driving wheel (3) mounted on the driving end of the driving motor (1), a driven wheel (4) mounted on the driving shaft (7), and a motor base (2) for covering the driving wheel (3) and the driven wheel (4) on a bearing base (17). The driving motor (1) is fixedly mounted on the motor base (2), and the driving wheel (3) and the driven wheel (4) are connected via a belt drive or a toothed belt drive. When a belt drive is adopted, the driving wheel (3) and the driven wheel (4) are pulleys.

6. The film stretching device used in a bagging machine according to claim 5, characterized in that: The transmission ratio of the transmission mechanism (5) can be adjusted by replacing the driving wheel (3) and the driven wheel (4) with different diameters.

7. The film stretching device used in a bagging machine according to claim 1, characterized in that: The slide groove (171) is opened toward a side away from the drive motor (1) and a side of the top of the bearing seat (17); a side cover (15) is provided on a side away from the drive motor (1) of the bearing seat (17); and a top cover (18) is provided on a side of the top of the bearing seat (17); the side cover (15) and the top cover (18) restrict the pressure wheel slider (16) in the slide groove (171) so that the pressure wheel slider (16) slides up and down; one end of the return spring (22) abuts against the top cover (18), and the other end abuts against the pressure wheel slider (16).

8. The film stretching device used in a bagging machine according to claim 2, characterized in that: The top of the bearing seat (17) is provided with an adjustment mechanism for driving the pressure roller slider (16) to move, and the adjustment mechanism includes an adjustment seat (19) mounted on the top cover (18), an adjustment shaft (20) connected to the pressure roller slider (16), and an adjustment handle (21) connected to the top of the adjustment shaft (20). The bottom of the adjustment shaft (20) is rotatably mounted on the pressure roller slider (16), and the top of the adjustment shaft (20) extends upward through the top cover (18) and the adjustment seat (19). The adjusting handle (21) is horizontally passed through the protruding portion of the top end of the adjusting shaft (20), and the top of the adjusting seat (19) is also provided with an adjusting inclined surface (191). Under normal conditions, the adjusting handle (21) is pressed against the lowest end of the adjusting inclined surface (191) by the action of the return spring (22). When the adjusting handle (21) is rotated, the adjusting handle (21) gradually rises along the adjusting inclined surface (191) and drives the pressure wheel slider (16) and the soft rubber pressure wheel (12) to rise through the adjusting shaft (20).

9. The film stretching device used in a bagging machine according to claim 8, characterized in that: The adjusting bevels (191) are provided in two groups and are arranged opposite to each other on the top of the adjusting seat (19). The adjusting handles (21) on both sides of the adjusting shaft (20) are respectively fitted on the two groups of adjusting bevels (191). The top of the adjusting bevel (191) is also provided with a limiting groove (192). After the adjusting handle (21) is rotated to the top of the adjusting bevel (191), it can be stuck in the limiting groove (192) to keep the pressure wheel slider (16) and the soft rubber pressure wheel (12) in a raised state.

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