Leveling device for tension roller of longitudinal stretching machine

Abstract

The utility model belongs to the technical field of longitudinal stretching machine equipment, and particularly relates to a longitudinal stretching machine tension roller leveling device which comprises a tension roller, a stand column used for installing the tension roller and a leveling mechanism with a lead screw assembly. The interior of the stand column is of a hollow structure, a left sliding groove and a right sliding groove are formed in the side wall of the stand column, and the hollow structure, the left sliding groove and the right sliding groove form a communicating structure. A lead screw assembly of the leveling mechanism is arranged at the hollow structure of the stand column, one side of the lead screw assembly is fixedly connected with one end of a tension roller through a left sliding groove, and the lead screw assembly drives the height of the tension roller to change through spiral lifting motion. The leveling mechanism further comprises a scale instrument used for measuring the height, and one end of the scale instrument penetrates through the right sliding groove to be connected with one side of the lead screw assembly. The levelness of the tension roller is adjusted by arranging the lead screw assembly, so that a plastic film is uniformly stressed in the straightening process, the problem of wrinkling of the plastic film is avoided, and the levelness of the tension roller is checked by arranging the scale instrument.

Description

Technical Field

[0001] The present application belongs to the technical field of longitudinal drawing machine equipment, and specifically relates to a tension roller leveling device for a longitudinal drawing machine. Background Art

[0002] The longitudinal stretching machine is mainly used in the longitudinal stretching process in film production. The film made in the previous process is introduced into the linkage roller by rotating the roller, and then the film is straightened by the longitudinal tension roller at the bottom to change the longitudinal arrangement of the molecules on the film and enhance the tensile properties of the film.

[0003] Due to the large length of the tension roller, after a traditional longitudinal stretching machine has been working for a period of time, the left and right ends of the tension roller are easily not on the same horizontal plane. This phenomenon will cause uneven force on both ends of the plastic film that is mounted on the tension roller for straightening, resulting in wrinkles. Utility Model Content

[0004] In order to overcome the problems existing in the background technology, the present application provides a tension roller leveling device for a longitudinal stretching machine, which aims to solve the problem of wrinkles in the plastic film due to uneven force at both ends.

[0005] To achieve the above objectives, this application is implemented through the following technical solutions:

[0006] A tension roller leveling device for a longitudinal drawing machine comprises a tension roller, the tension roller leveling device for the longitudinal drawing machine further comprises a column for mounting the tension roller, and a leveling mechanism having a screw rod assembly;

[0007] The interior of the column is a hollow structure, and the side wall of the column is provided with left and right slide grooves, and the hollow structure forms a connecting structure with the left and right slide grooves;

[0008] The screw assembly of the leveling mechanism is arranged at the hollow structure of the column, one side of the screw assembly is fixedly connected to one end of the tension roller through the left slide groove, and the screw assembly drives the height of the tension roller to change through the spiral lifting movement;

[0009] The leveling mechanism also includes a scale for measuring height, one end of which passes through the right slide slot and is connected to one side of the screw assembly.

[0010] Optionally, the screw rod assembly includes a nut and a screw rod;

[0011] The inner wall of the nut is provided with an internal thread, and the outer wall of the screw rod is provided with an external thread, and the internal thread and the external thread can be screwed together.

[0012] Optionally, one end of the nut is fixedly connected to the tension roller.

[0013] Optionally, the scale comprises a pointer and a scale;

[0014] One end of the pointer is fixedly connected to one end of the nut, and the other end of the pointer extends out of the right sliding groove and is slidably connected to the scale.

[0015] Optionally, the leveling mechanism further includes a knob disposed above the column, the lower end of the knob extending into the hollow structure of the column and fixedly connected to the upper end of the screw rod.

[0016] Optionally, the surface of the knob is covered with a rubber layer.

[0017] Optionally, the surfaces of the left and right slide grooves and the scale are covered with lubricating oil.

[0018] The beneficial effects of the present application are as follows: the present application sets a screw assembly to adjust the horizontality of the tension roller, so that the plastic film is evenly stressed during the straightening process, thereby avoiding the problem of wrinkles in the plastic film; the present application sets a scale to check the horizontality of the tension roller; the present application covers the surface of the left and right slide grooves and the scale with lubricating oil to make the nut smoother during the spiral ascent or descent, thereby improving the service life and adjustment accuracy of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of this application;

[0020] Figure 2 It is a structural schematic diagram of the leveling mechanism of the present application;

[0021] Figure 3 It is a top view of the leveling mechanism of the present application.

[0022] In the figure, 1 is a tension roller, 2 is a column, 3 is a leveling mechanism, 31 is a screw rod assembly, 32 is a scale, 33 is a knob, 311 is a nut, 312 is a stud, 321 is a pointer, and 322 is a scale. DETAILED DESCRIPTION

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

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific situation.

[0026] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0027] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples" or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0028] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

[0029] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

[0030] In order to make the purpose, technical solutions and beneficial effects of the present application clearer, the preferred embodiments of the present application will be described in detail below in conjunction with the accompanying drawings to facilitate understanding by technical personnel.

[0031] Embodiment 1:

[0032] See also Figure 1 , a tension roller leveling device for a longitudinal drawing machine, comprising a tension roller 1, the tension roller leveling device for the longitudinal drawing machine further comprising a column 2 for mounting the tension roller 1, and a leveling mechanism 3 having a screw assembly 31;

[0033] The interior of the column 2 is a hollow structure, and the side wall of the column 2 is provided with left and right slide grooves, and the hollow structure and the left and right slide grooves form a connecting structure;

[0034] The upright posts 2 and the leveling mechanisms 3 are symmetrically arranged in two groups, so that the heights of both ends of the tension roller 1 can be adjusted.

[0035] The screw assembly 31 of the leveling mechanism 3 is arranged at the hollow structure of the column 2, one side of the screw assembly 31 is fixedly connected to one end of the tension roller 1 through the left slide groove, and the screw assembly 31 drives the height of the tension roller 1 to change through the spiral lifting movement;

[0036] The bottom of the screw assembly 31 abuts against the bottom of the hollow structure, and the screw assembly 31 can rotate freely at the hollow structure; the roller shaft of the tension roller 1 passes through the left slide groove and is fixedly connected to one side of the screw assembly 31, and a bearing is provided on the roller shaft of the tension roller 1, and the outer ring of the bearing is fixedly connected to the roller wheel of the tension roller 1, and the inner ring of the bearing and the roller shaft are fixedly connected by a flat key, so that the roller wheel of the tension roller 1 can drive the outer ring of the bearing to rotate, and because the inner ring of the bearing is stationary, the roller shaft of the tension roller 1 will not rotate with the roller wheel of the tension roller 1;

[0037] Working process: The screw assembly 31 drives the roller shaft of the tension roller 1 to move up and down through the spiral lifting motion, and the roller shaft drives the roller wheel to move up and down, thereby realizing the leveling of the tension roller 1.

[0038] The leveling mechanism 3 further includes a scale 32 for measuring height, and one end of the scale 32 passes through the right slide slot and is connected to one side of the screw assembly 31 .

[0039] When the screw assembly 31 moves up and down, its up and down displacement is displayed by the scale 32. If the scales indicated by the two scales 32 of the leveling mechanism 3 are consistent, it means that the two ends of the tension roller 1 are located in the same horizontal plane. At this time, the heights of the two ends of the tension roller 1 are consistent. The plastic film sleeved on the tension roller 1 will not wrinkle during the straightening process because the force is evenly applied; if the scales indicated by the two scales 32 of the leveling mechanism 3 are inconsistent, it means that the two ends of the tension roller 1 are not in the same horizontal plane. At this time, the heights of the two ends of the tension roller 1 are inconsistent. If the plastic film is straightened at this time, the plastic film will wrinkle due to uneven force. Therefore, it is necessary to adjust one of the leveling mechanisms 3 to make the scales indicated by the two scales 32 consistent, so that the heights of the two ends of the tension roller 1 remain consistent.

[0040] In the above process, before each plastic film straightening operation begins, it is necessary to check whether the indicated scales of the two scales 32 are consistent. If not, the leveling mechanism 3 is adjusted to make them consistent to ensure the horizontality of the tension roller 1.

[0041] Embodiment 2:

[0042] See also Figure 2 and Figure 3 , the screw assembly 31 includes a nut 311 and a screw 312;

[0043] An inner wall of the nut 311 is provided with an internal thread, and an outer wall of the screw rod 312 is provided with an external thread, and the internal thread and the external thread can be screwed together.

[0044] The screw assembly 31 can convert the rotational motion into the linear motion, that is, through the rotation of the screw 312 , the nut 311 can be driven to spirally rise or fall on the screw 312 .

[0045] One end of the nut 311 is fixedly connected to the tension roller 1 .

[0046] The nut 311 is fixedly connected to the tension roller 1 , so that when the nut 311 performs linear motion on the screw rod 312 , it can drive the tension roller 1 to move, thereby achieving height adjustment of the tension roller 1 .

[0047] The scale 32 includes a pointer 321 and a scale 322;

[0048] One end of the pointer 321 is fixedly connected to one end of the nut 311 , and the other end of the pointer 321 extends out of the right sliding groove and is slidably connected to the scale 322 .

[0049] The pointer 321 is fixedly connected to the nut 311, so that when the nut 311 performs linear motion on the screw 312, it can drive the pointer 321 to move up and down. Since the nut 311, the tension roller 1 and the pointer 321 all move up and down at the same time, the scale indicated by the tip of the pointer 321 on the scale 322 is the height of the tension roller 1. By adjusting the height of the two ends of the tension roller 1, the values ​​indicated by the two pointers 321 are consistent, thereby leveling the tension roller 1.

[0050] The leveling mechanism 3 further includes a knob 33 disposed above the column 2 . The lower end of the knob 33 extends into the hollow structure of the column 2 and is fixedly connected to the upper end of the screw rod 312 .

[0051] The knob 33 is turned to drive the screw rod 312 to rotate, so that the nut 311 spirally rises or falls on the screw rod 312 , thereby converting the rotational motion of the screw rod 312 into the linear motion of the nut 311 .

[0052] The surface of the knob 33 is covered with a rubber layer.

[0053] The rubber layer is used to increase the friction between the hand and the knob 33 to facilitate better force generation.

[0054] The surfaces of the left and right slide grooves and the scale 322 are covered with lubricating oil.

[0055] By covering the surface of the left slide with lubricating oil, the friction between the left slide and the roller shaft of the tension roller 1 is reduced; by covering the surface of the right slide with lubricating oil, the friction between the right slide and the pointer 321 is reduced; by covering the surface of the scale 322 with lubricating oil, the friction between the tip of the pointer 321 and the surface of the scale 322 is reduced, so that the nut 311 is smoother during the spiral ascent or spiral descent, thereby improving the service life and adjustment accuracy of the device.

[0056] The working process of the present application is as follows: before the straightening operation of the plastic film begins, observe whether the tips of the pointers 321 at both ends of the tension roller 1 are pointing to the same scale. If not, turn the knob 33 at one end of the tension roller 1 to make the nut 311 spiral up or down on the screw 312 to drive one end of the tension roller 1 to move up and down in a straight line until the tips of the two pointers 321 are pointing to the same scale line, stop turning the knob 33, and then start the straightening operation of the plastic film.

[0057] In summary, the present application sets a screw assembly 31 to adjust the horizontality of the tension roller 1, so that the plastic film is evenly stressed during the straightening process, thereby avoiding the problem of wrinkles in the plastic film; the present application sets a scale 32 to check the horizontality of the tension roller 1; the present application covers the surface of the left and right slide grooves and the scale 322 with lubricating oil to make the nut 311 smoother during the spiral ascent or descent, thereby improving the service life and adjustment accuracy of the device.

[0058] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the present application rather than to limit it. Although the present application 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 present application; the dimensions of the drawings are not related to the specific objects, and the dimensions of the objects can be changed arbitrarily.

Claims

1. A tension roller leveling device for a longitudinal stretching machine, comprising a tension roller (1), characterized in that: The longitudinal drawing machine tension roller leveling device further comprises a column (2) for mounting the tension roller (1), and a leveling mechanism (3) having a screw rod assembly (31); The interior of the column (2) is a hollow structure, and the side wall of the column (2) is provided with a left slide groove and a right slide groove, and the hollow structure forms a connecting structure with the left slide groove and the right slide groove; The screw assembly (31) of the leveling mechanism (3) is arranged at the hollow structure of the column (2), one side of the screw assembly (31) is fixedly connected to one end of the tension roller (1) through the left slide groove, and the screw assembly (31) drives the height of the tension roller (1) to change through spiral lifting and lowering movement; The leveling mechanism (3) further comprises a scale (32) for measuring the height, and one end of the scale (32) passes through the right slide groove and is connected to one side of the screw assembly (31).

2. The tension roller leveling device for a longitudinal stretching machine according to claim 1, characterized in that: The screw rod assembly (31) comprises a nut (311) and a screw rod (312); The inner wall of the nut (311) is provided with an internal thread, and the outer wall of the screw rod (312) is provided with an external thread, and the internal thread and the external thread can be screwed together.

3. The tension roller leveling device for a longitudinal stretching machine according to claim 2, characterized in that: One end of the nut (311) is fixedly connected to the tension roller (1).

4. The tension roller leveling device for a longitudinal stretching machine according to claim 2, characterized in that: The scale (32) comprises a pointer (321) and a scale (322); One end of the pointer (321) is fixedly connected to one end of the nut (311), and the other end of the pointer (321) extends out of the right sliding groove and is slidably connected to the scale (322).

5. The tension roller leveling device for a longitudinal stretching machine according to claim 1, characterized in that: The leveling mechanism (3) further comprises a knob (33) arranged above the column (2); the lower end of the knob (33) extends into the hollow structure of the column (2) and is fixedly connected to the upper end of the screw rod (312).

6. The tension roller leveling device for a longitudinal stretching machine according to claim 5, characterized in that: The surface of the knob (33) is covered with a rubber layer.

7. The tension roller leveling device for a longitudinal stretching machine according to claim 1, characterized in that: The surfaces of the left and right slide grooves and the scale (322) are covered with lubricating oil.

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