CN111168979A

CN111168979A - Film stretching device, film single-guide-rail stretching chain clamp and chain clamp monomer

Info

Publication number: CN111168979A
Application number: CN202010278191.3A
Authority: CN
Inventors: 梁达辉; 汤智勇; 何汉昭
Original assignee: Mce Stretching Industry Co ltd
Current assignee: Mce Stretching Industry Co ltd
Priority date: 2020-04-10
Filing date: 2020-04-10
Publication date: 2020-05-19
Anticipated expiration: 2040-04-10
Also published as: CN111168979B

Abstract

The invention relates to a film stretching device, a film single-guide-rail stretching chain clamp and a chain clamp single body. The number of the rollers can be reduced no longer like 6-9 rollers arranged on the traditional chain clamp single body, and when the chain clamp single body is periodically disassembled, cleaned and maintained, the disassembling and assembling time of the rollers of the chain clamp single body is shortened, and the working efficiency is higher; in addition, first axis, second axis and third axis are not the coincidence, namely first gyro wheel for the skew of third gyro wheel towards one of them side, the second gyro wheel for the skew of third gyro wheel towards the opposite side, to the first support in unit width like this, can install the bigger first gyro wheel of volume size, second gyro wheel and third gyro wheel, to the gyro wheel of big volume size, shock resistance is stronger, and the durability is stronger for the maintenance replacement cycle time of gyro wheel presses the back, can prolong life greatly.

Description

Film stretching device, film single-guide-rail stretching chain clamp and chain clamp monomer

Technical Field

The invention relates to the technical field of film stretching treatment, in particular to a film stretching device, a film single-guide-rail stretching chain clamp and a chain clamp monomer.

Background

With the development of film stretching technology, film stretching apparatuses have emerged. The film is stretched in a proper temperature range (under high elastic state) above the glass transition temperature and below the melting point by a film stretching device under the action of external force in a certain multiple along the longitudinal direction and the transverse direction, so that molecular chains or crystal planes are oriented and orderly arranged in the direction parallel to the plane of the film, then heat setting is carried out in a tensioning state, the oriented macromolecular structure is fixed, and finally the film can be prepared through cooling and subsequent treatment. The film stretching device comprises a track and a chain clamp movably arranged on the track. However, the conventional chain clamp includes more than two chain clamp units connected in sequence, and the chain clamp unit generally needs to be provided with 6 to 9 rollers moving along the rail. When carrying out the clean maintenance of periodic dismantlement to the chain clamp monomer, the dismouting of the free gyro wheel of chain clamp consumes a large amount of time, and work efficiency is lower. In addition, the rollers on the chain clamp units are prone to failure and need to be stopped for replacement and maintenance when the rollers are in failure, so that the production efficiency of products is affected.

Disclosure of Invention

Based on this, it is necessary to overcome the defects of the prior art, and to provide a film stretching device, a film single-rail stretching chain clamp and a chain clamp single body, which can improve the stability, enhance the shock resistance of the roller on the heavy load side, reduce the failure rate, and ensure the production efficiency.

The technical scheme is as follows: a chain clamp monomer, comprising:

the first support comprises a first mounting plate, a second mounting plate and a first connecting plate, the first mounting plate is connected with the second mounting plate through the first connecting plate, and the first mounting plate and the second mounting plate are arranged at intervals relatively;

first gyro wheel, second gyro wheel and third gyro wheel, first gyro wheel the second gyro wheel reaches the third gyro wheel set up in first mounting panel with between the second mounting panel, first gyro wheel rotationally set up in on the first mounting panel, the second gyro wheel rotationally set up in on the second mounting panel, the third gyro wheel rotationally set up in on the first support, first gyro wheel with the second gyro wheel be used for respectively with the upper and lower both sides contact cooperation of one of them side of track board and along one of them side of track board rolls, the third gyro wheel be used for with the cooperation of track board another side contact and along the another side of track board rolls, first gyro wheel is in orthographic first axis on the first connecting plate and the second gyro wheel is in orthographic second axis on the first connecting plate is located respectively the third gyro wheel is in the orthographic third axis on the first connecting plate Two sides; and

the clamping assembly is arranged on the first support and used for clamping one side of the film.

In the chain clamp single body, the first roller and the second roller are respectively in contact fit with the upper side and the lower side of one side surface of the track plate and roll along one side surface of the track plate, the third roller is matched with the other side surface of the track plate and roll along the other side surface of the track plate, the first axis of the orthographic projection of the first roller on the first connecting plate and the second axis of the orthographic projection of the second roller on the first connecting plate are respectively positioned on two sides of the third axis of the orthographic projection of the third roller on the first connecting plate, therefore, on one hand, the chain clamp single body can stably move along the track plate, on the other hand, more rollers are not needed to be arranged, 6-9 rollers are not needed to be arranged on the traditional chain clamp single body, namely, the number of the rollers can be reduced, when the chain clamp single body is periodically disassembled, cleaned and maintained, the disassembling and assembling time of the roller of the chain clamp single body is shortened, and the working efficiency is higher; furthermore, a first axis of an orthographic projection of the first roller on the first connecting plate is offset toward one side relative to a third axis of an orthographic projection of the third roller on the first connecting plate, a second axis of an orthographic projection of the second roller on the first connecting plate is offset toward the other side relative to a third axis of an orthographic projection of the third roller on the first connecting plate, the first axis, the second axis and the third axis are not coincident, that is, the first roller is offset toward one side relative to the third roller, the second roller is offset toward the other side relative to the third roller, thus, the first bracket with the unit width can be provided with a first roller, a second roller and a third roller with larger volume size, to the gyro wheel of bulky size, shock resistance is stronger, and the durability is stronger for the maintenance of gyro wheel is changed the cycle time and is pressed the back, can increase of service life greatly.

In one embodiment, the first axis and the second axis are both parallel to the third axis, and the distance between the first axis and the third axis is equal to the distance between the second axis and the third axis.

In one embodiment, the third roller is closer to the first connecting plate than the first roller and the second roller; the third roller is closer to the clamping assembly than the first roller and the second roller.

In one embodiment, the first mounting plate, the first connecting plate and the second mounting plate are of a unitary structure; the first support is a rigid support.

In one embodiment, the chain clamp unit further comprises a fourth roller, a hollow-out opening is formed in the first mounting plate, and the fourth roller is rotatably arranged at the hollow-out opening; the fourth roller is used for being in contact fit with the top surface of the track plate and rolling along the top surface of the track plate.

In one embodiment, the clamping assembly comprises a second bracket detachably arranged on the first bracket and a rotating arm rotatably arranged on the second bracket; the second support comprises a supporting plate, and the clamping surface of the rotating arm is matched with the plate surface of the supporting plate to clamp the film to be processed.

In one embodiment, the second bracket further comprises a fixing plate and a second connecting plate, the fixing plate is connected with one end of the second connecting plate, and the fixing plate is detachably mounted on the first mounting plate; the fixing plate is provided with a first positioning hole, the first mounting plate is provided with a second positioning hole corresponding to the first positioning hole, and the fixing plate is inserted into the first positioning hole through the positioning piece, is connected with the first mounting plate through the second positioning hole and the first positioning hole; the other end of the second connecting plate is connected with the supporting plate; the orthographic projection of the supporting surface of the supporting plate on the first connecting plate is positioned in the middle of the first connecting plate.

The film single-guide-rail stretching chain clamp comprises more than two chain clamp monomers which are sequentially connected.

In the film single-guide-rail stretching chain clamp, the first roller and the second roller are respectively in contact fit with the upper side and the lower side of one side surface of the track plate and roll along one side surface of the track plate, the third roller is in contact fit with the other side surface of the track plate and roll along the other side surface of the track plate, the orthographic first axis of the first roller on the first connecting plate and the orthographic second axis of the second roller on the first connecting plate are respectively positioned on two sides of the orthographic third axis of the third roller on the first connecting plate, so that the chain clamp single body can stably move along the track plate without arranging more rollers, the number of the rollers is reduced without 6-9 rollers arranged on the traditional chain clamp single body, and the disassembly and assembly time of the rollers of the chain clamp single body is shortened when the chain clamp single body is periodically disassembled, cleaned and maintained, the working efficiency is higher; furthermore, a first axis of an orthographic projection of the first roller on the first connecting plate is offset toward one side relative to a third axis of an orthographic projection of the third roller on the first connecting plate, a second axis of an orthographic projection of the second roller on the first connecting plate is offset toward the other side relative to a third axis of an orthographic projection of the third roller on the first connecting plate, the first axis, the second axis and the third axis are not coincident, that is, the first roller is offset toward one side relative to the third roller, the second roller is offset toward the other side relative to the third roller, thus, the first bracket with the unit width can be provided with a first roller, a second roller and a third roller with larger volume size, to the gyro wheel of bulky size, shock resistance is stronger, and the durability is stronger for the maintenance of gyro wheel is changed the cycle time and is pressed the back, can increase of service life greatly.

In one embodiment, the single clip body comprises a rotating shaft and a link plate, the rotating shaft is mounted on the first mounting plate, one end of the link plate is rotatably connected with the rotating shaft, and the other end of the link plate is rotatably connected with the rotating shaft of another adjacent clip body.

The utility model provides a film stretching device, includes the tensile chain clamp of film single track, still includes the track board, first gyro wheel with the second gyro wheel respectively with the upper and lower both sides contact cooperation of one of them side of track board and along one of them side of track board rolls, the third gyro wheel with another side contact cooperation of track board and along another side of track board rolls.

In the film stretching device, the first roller and the second roller are respectively in contact fit with the upper side and the lower side of one side surface of the track plate and roll along one side surface of the track plate, the third roller is in contact fit with the other side surface of the track plate and roll along the other side surface of the track plate, the orthographic first axis of the first roller on the first connecting plate and the orthographic second axis of the second roller on the first connecting plate are respectively positioned on two sides of the orthographic third axis of the third roller on the first connecting plate, so that on one hand, the chain clamp single body can stably move along the track plate, on the other hand, more rollers are not needed, 6-9 rollers are not needed as in the traditional chain clamp single body, the number of the rollers can be reduced, and the disassembly and assembly time of the rollers of the chain clamp single body is shortened when the chain clamp single body is periodically disassembled, cleaned and maintained, the working efficiency is higher; furthermore, a first axis of an orthographic projection of the first roller on the first connecting plate is offset toward one side relative to a third axis of an orthographic projection of the third roller on the first connecting plate, a second axis of an orthographic projection of the second roller on the first connecting plate is offset toward the other side relative to a third axis of an orthographic projection of the third roller on the first connecting plate, the first axis, the second axis and the third axis are not coincident, that is, the first roller is offset toward one side relative to the third roller, the second roller is offset toward the other side relative to the third roller, thus, the first bracket with the unit width can be provided with a first roller, a second roller and a third roller with larger volume size, to the gyro wheel of bulky size, shock resistance is stronger, and the durability is stronger for the maintenance of gyro wheel is changed the cycle time and is pressed the back, can increase of service life greatly.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is an exploded view of the clip monomer according to an embodiment of the present invention;

FIG. 2 is a view of one of the chain clamp units according to an embodiment of the invention;

FIG. 3 is a view of the chain clamp unit from another perspective in an embodiment of the present invention;

FIG. 4 is a front view of the chain clamp monomers in one embodiment of the present invention;

FIG. 5 is a top view of the chain clamp monomer in one embodiment of the present invention;

FIG. 6 is a view illustrating a structure of a film stretching apparatus according to an embodiment of the present invention;

FIG. 7 is a view showing another perspective structure of a film stretching apparatus according to an embodiment of the present invention;

fig. 8 is a side view of a film stretching apparatus along the track plate direction in an embodiment of the present invention.

10. A chain clamp monomer; 11. a first bracket; 111. a first mounting plate; 1111. hollowing out; 1112. a connecting shaft; 112. a second mounting plate; 113. a first connecting plate; 12. a first roller; 121. a first axis; 122. a first rotating shaft; 13. a second roller; 131. a second axis; 132. a second rotating shaft; 14. a third roller; 141. a third axis; 15. a clamping assembly; 151. a second bracket; 1511. a support plate; 1512. a fixing plate; 1513. a second connecting plate; 1514. a support; 1515. a positioning member; 1516. a mounting member; 1517. a first positioning hole; 152. a rotating arm; 1521. a clamping head; 1522. a handle; 153. rotating the rod; 16. a fourth roller; 17. a rotating shaft; 18. a chain plate; 19. a wear-resistant backing plate; 20. a track plate.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Generally, two rollers are arranged on the first bracket of the conventional chain clamp unit at the same horizontal height side by side, and are synchronously contacted with and moved along the same side surface of the track plate by using the two rollers. In the course of the work, the link joint drives the chain and presss from both sides the monomer and move along the track board, when needing to carry out horizontal stretching, the clamping component centre gripping film on the chain presss from both sides the monomer and carries out horizontal stretching towards the face direction of perpendicular to track board, the gyro wheel that so lies in chain clamp monomer rear side position will the in close contact with track board, and the gyro wheel that lies in chain clamp monomer front side position exists the phenomenon of slightly separating with the track board, the atress imbalance of two gyro wheels that set up side by side on the chain clamp monomer promptly, the gyro wheel at chain clamp monomer rear side position breaks down after long-term work extremely easily.

Referring to fig. 1 to 3, fig. 1 is an exploded view of a chain clamp single body 10 in an embodiment of the present invention, fig. 2 is a view structural view of the chain clamp single body 10 in an embodiment of the present invention, and fig. 3 is a view structural view of the chain clamp single body 10 in an embodiment of the present invention. The chain clamp unit 10 provided in an embodiment of the present invention includes: a first bracket 11, a first roller 12, a second roller 13, a third roller 14 and a clamping component 15. The first bracket 11 includes a first mounting plate 111, a second mounting plate 112, and a first connecting plate 113. The first mounting plate 111 is connected to the second mounting plate 112 through the first connecting plate 113, and the first mounting plate 111 and the second mounting plate 112 are spaced apart from each other.

The first roller 12, the second roller 13, and the third roller 14 are disposed between the first mounting plate 111 and the second mounting plate 112, the first roller 12 is rotatably disposed on the first mounting plate 111, the second roller 13 is rotatably disposed on the second mounting plate 112, and the third roller 14 is rotatably disposed on the first bracket 11.

Referring to fig. 6 to 8, fig. 6 is a view showing a structure of a film stretching apparatus according to an embodiment of the present invention, fig. 7 is a view showing another structure of a film stretching apparatus according to an embodiment of the present invention, and fig. 8 is a side view of the film stretching apparatus along the track plate 20 direction according to an embodiment of the present invention. The first roller 12 and the second roller 13 are respectively used for contacting and matching with the upper side and the lower side of one side surface of the track plate 20 and rolling along one side surface of the track plate 20, and the third roller 14 is used for contacting and matching with the other side surface of the track plate 20 and rolling along the other side surface of the track plate 20. Specifically, the third roller 14 is configured to contact and engage with a middle portion of the other side surface of the track plate 20 and roll along the other side surface of the track plate 20.

Referring to fig. 4 and 5, fig. 4 illustrates a front view of the chain clamp single body 10 in an embodiment of the present invention, and fig. 5 illustrates a top view of the chain clamp single body 10 in an embodiment of the present invention. A first axis 121 of the orthographic projection of the first roller 12 on the first connecting plate 113 and a second axis 131 of the orthographic projection of the second roller 13 on the first connecting plate 113 are respectively located on both sides of a third axis 141 of the orthographic projection of the third roller 14 on the first connecting plate 113. The clamping assembly 15 is disposed on the first bracket 11, and the clamping assembly 15 is used for clamping one side of the film.

In the chain clamp single body 10, because the first roller 12 and the second roller 13 are respectively in contact fit with the upper side and the lower side of one side surface of the track plate 20 and roll along one side surface of the track plate 20, the third roller 14 is in contact fit with the other side surface of the track plate 20 and roll along the other side surface of the track plate 20, the orthographic first axis 121 of the first roller 12 on the first connecting plate 113 and the orthographic second axis 131 of the second roller 13 on the first connecting plate 113 are respectively located on both sides of the orthographic third axis 141 of the third roller 14 on the first connecting plate 113, on one hand, the chain clamp single body 10 can stably move along the track plate 20, on the other hand, more rollers are not required, 6-9 rollers are not required to be arranged on the conventional chain clamp single body 10, that is, the number of rollers can be reduced, so that when the chain clamp single body 10 is periodically disassembled, cleaned and maintained, the disassembly and assembly time of the rollers of the chain clamp single body 10 is shortened, and the working efficiency is higher; in addition, the first axis 121 of the orthographic projection of the first roller 12 on the first connecting plate 113 is offset toward one side with respect to the third axis 141 of the orthographic projection of the third roller 14 on the first connecting plate 113, the second axis 131 of the orthographic projection of the second roller 13 on the first connecting plate 113 is offset toward the other side with respect to the third axis 141 of the orthographic projection of the third roller 14 on the first connecting plate 113, the first axis 121, the second axis 131 and the third axis 141 are not coincident, that is, the first roller 12 is offset toward one side with respect to the third roller 14, and the second roller 13 is offset toward the other side with respect to the third roller 14, so that for the first bracket 11 of a unit width, the first roller 12, the second roller 13 and the third roller 14 with larger volume size can be installed, for the roller with large volume size, the shock resistance is stronger, the durability is stronger, so that after the maintenance replacement cycle time of the roller is pressed, the service life can be greatly prolonged.

Referring to fig. 4, the first axis 121 and the second axis 131 are both disposed parallel to the third axis 141, and a distance between the first axis 121 and the third axis 141 is equal to a distance between the second axis 131 and the third axis 141. Therefore, when the chain clamp unit 10 moves along the track plate 20, the first roller 12 and the second roller 13 are stressed more evenly, and the movement is more stable.

Referring to fig. 2 and 3 again, in one embodiment, the third roller 14 is closer to the first connecting plate 113 than the first roller 12 and the second roller 13. The third roller 14 is closer to the clamping assembly 15 than the first roller 12 and the second roller 13. Therefore, the clamping assembly 15 and the third roller 14 are both located on the same side of the track plate 20, the first roller 12 and the second roller 13 are located on the other side of the track plate 20, and when the transverse stretching step is performed, the track plate 20 simultaneously bears the reverse acting force of the first roller 12 and the second roller 13, so that the stability of the whole structure is good, and the operation of the chain clamp single body 10 on the track plate 20 is stable.

In one embodiment, the first mounting plate 111, the first connecting plate 113, and the second mounting plate 112 are a unitary structure. The first mounting plate 111, the first connecting plate 113 and the second mounting plate 112 are integrally formed by injection molding or forging, so that the production efficiency and the structural strength can be ensured. Of course, as an example, the first mounting plate 111, the first connecting plate 113 and the second mounting plate 112 may be welded to each other or combined together by means of clamping, bolts, screws, etc. In addition, optionally, the first support 11 is a rigid support, such as a metal support, and the whole body is of a C-shaped structure, and the structural strength can be ensured by using the rigid support.

Referring to fig. 1, 2 and 8, in one embodiment, the chain clamp unit 10 further includes a fourth roller 16. A hollow 1111 is arranged on the first mounting plate 111, and the fourth roller 16 is rotatably arranged at the hollow 1111. The fourth roller 16 is adapted to contact and engage with the top surface of the track plate 20 and roll along the top surface of the track plate 20. Thus, the fourth roller 16 moves along the top surface of the track plate 20, and plays a supporting role, thereby enhancing the operation stability of the chain clamp unit 10. Specifically, the first mounting plate 111 is provided with a fourth connecting shaft 1112, and the fourth roller 16 is rotatably sleeved on the fourth connecting shaft 1112.

As a possible solution, the first mounting plate 111 is not provided with the hollow 1111, but the second mounting plate 112 is provided with the hollow 1111, and the fourth roller 16 is rotatably disposed at the hollow 1111. The fourth roller 16 is adapted to contact and engage with the bottom surface of the track plate 20 and roll along the bottom surface of the track plate 20.

Referring to fig. 1, fig. 2 and fig. 8, in one embodiment, the clamping assembly 15 includes a second bracket 151 detachably disposed on the first bracket 11 and a rotating arm 152 rotatably disposed on the second bracket 151. The second holder 151 includes a supporting plate 1511, and the holding surface of the rotating arm 152 cooperates with the plate surface of the supporting plate 1511 to hold the film to be processed. So, because first support 11 detachably installs on second support 151, when needs wash the operation to clamping component 15, can directly dismantle second support 151 from first support 11, then adopt chemical liquid medicine to wash the operation to the holding surface of backup pad 1511 and rotor arm 152, need not if traditional whole chain clamp monomer 10 washs the processing to can be convenient for wash, work efficiency is higher, and the cleaning quality is higher.

Referring to fig. 1, 2 and 8, in particular, the rotating arm 152 includes a clamping head 1521 and a handle 1522. The handle 1522 is rotatably arranged on the second support 151, the handle 1522 is connected with the clamping head 1521, the handle 1522 is rotated to drive the clamping head 1521 to rotate, and the clamping head 1521 can be matched with the surface of the support plate 1511 to clamp a film to be processed or loosen the film when rotating.

Referring to fig. 2, 3 and 8, in one embodiment, the second bracket 151 further includes a fixing plate 1512 and a second connecting plate 1513. The fixing plate 1512 is connected to one end of the second connecting plate 1513, and the fixing plate 1512 is detachably mounted on the first mounting plate 111. The fixing plate 1512 is provided with a first positioning hole 1517, the first mounting plate 111 is provided with a second positioning hole corresponding to the first positioning hole 1517, and the fixing plate 1512 is inserted into the first positioning hole 1517 through the positioning member 1515 and connected to the first mounting plate 111 with the second positioning hole. The other end of the second connection plate 1513 is connected to the support plate 1511. An orthographic projection of the supporting surface of the supporting plate 1511 on the first connecting plate 113 is located at the middle of the first connecting plate 113.

Referring to fig. 2, fig. 3 and fig. 8, specifically, the fixing plate 1512 is detachably mounted on the first mounting plate 111 by using mounting members 1516 such as bolts, screws, rivets, etc. In addition, the number of the first positioning holes 1517 and the number of the second positioning holes are two or more, the number of the positioning parts 1515 is two or more, so that after the fixing plate 1512 is mounted on the first mounting plate 111, under the action of the positioning part 1515, the positions of the fixing plate 1512 and the first mounting plate 111 can be kept constant relatively, so that the stressed position of the clamping assembly 15 when clamping the film is unchanged relative to the stressed position of the rollers on the chain clamp single body 10, and further, the stressed positions of the third roller 14, the stressed position of the fourth roller 16 and the center of the stressed position of the clamping assembly 15 can be aligned, and the stressed direction of the first roller 12, the stressed direction of the second roller 13 and the stressed direction of the clamping assembly 15 can be kept consistent. Therefore, the chain clamp single body 10 is balanced in stress and stable in movement.

Referring to fig. 1, fig. 2 and fig. 8, further, the second bracket 151 further includes a support 1514 disposed on the second connecting plate 1513, and the rotating arm 152 is rotatably mounted on the support 1514. Specifically, the handle 1522 is rotatably coupled to the support 1514 by rotating the rod 153.

In one embodiment, referring to fig. 1, 6 and 7, a film single-track stretching chain clamp includes two or more chain clamp units 10 according to any one of the above embodiments connected in sequence.

In the film single-rail stretching chain clamp, because the first roller 12 and the second roller 13 are respectively in contact fit with the upper side and the lower side of one side surface of the rail plate 20 and roll along one side surface of the rail plate 20, the third roller 14 is in contact fit with the other side surface of the rail plate 20 and roll along the other side surface of the rail plate 20, the orthographic first axis 121 of the first roller 12 on the first connecting plate 113 and the orthographic second axis 131 of the second roller 13 on the first connecting plate 113 are respectively located on two sides of the orthographic third axis 141 of the third roller 14 on the first connecting plate 113, on one hand, the chain clamp single body 10 can stably move along the rail plate 20, on the other hand, more rollers are not required, 6-9 rollers are not required to be arranged on the traditional chain clamp single body 10, that is, the number of rollers can be reduced, so that when the chain clamp single body 10 is periodically disassembled, cleaned and maintained, the disassembly and assembly time of the rollers of the chain clamp single body 10 is shortened, and the working efficiency is higher; in addition, the first axis 121 of the orthographic projection of the first roller 12 on the first connecting plate 113 is offset toward one side with respect to the third axis 141 of the orthographic projection of the third roller 14 on the first connecting plate 113, the second axis 131 of the orthographic projection of the second roller 13 on the first connecting plate 113 is offset toward the other side with respect to the third axis 141 of the orthographic projection of the third roller 14 on the first connecting plate 113, the first axis 121, the second axis 131 and the third axis 141 are not coincident, that is, the first roller 12 is offset toward one side with respect to the third roller 14, and the second roller 13 is offset toward the other side with respect to the third roller 14, so that for the first bracket 11 of a unit width, the first roller 12, the second roller 13 and the third roller 14 with larger volume size can be installed, for the roller with large volume size, the shock resistance is stronger, the durability is stronger, so that after the maintenance replacement cycle time of the roller is pressed, the service life can be greatly prolonged.

Referring to fig. 1, 6 and 7, further, the chain clamp unit 10 includes a rotating shaft 17 and a link plate 18. The rotating shaft 17 is mounted on the first mounting plate 111, one end of the link plate 18 is rotatably connected to the rotating shaft 17, and the other end of the link plate 18 is rotatably connected to the rotating shaft 17 of another adjacent chain clamp unit 10. Specifically, both ends of the rotating shaft 17 are attached to the first mounting plate 111 and the second mounting plate 112, respectively.

Referring to fig. 1, fig. 2 and fig. 8, specifically, the third roller 14 is provided with a shaft hole and is rotatably sleeved on the rotating shaft 17. Each clip element 10 includes two link plates 18. Two link plates 18 are respectively provided on both end faces of the third roller 14. Therefore, in the process that the film single-guide-rail stretching chain clamp moves forwards, the third roller 14 is stressed more evenly due to the fact that the chain plates 18 are arranged on the two end faces. Since each clip unit 10 includes two link plates 18, four link plates 18 are connected to each rotating shaft 17, two link plates 18 are used for connecting the clip unit 10 with the front adjacent clip unit 10, and the other two link plates 18 are used for connecting the clip unit 10 with the rear adjacent clip unit 10. In addition, both end faces of each third roller 14 are provided with the ends of two link plates 18. In addition, the rotatable connection mode of the link plate 18 and the rotating shaft 17 is specifically as follows: the end of the chain plate 18 is provided with a shaft hole which is rotatably sleeved on the rotating shaft 17. Further, in order to prolong the service life of the chain clamp single body 10, the two upper and lower surfaces of the chain plate 18 are respectively provided with a wear-resistant pad plate 19, the wear-resistant pad plates 19 are rotatably sleeved on the rotating shaft 17, the wear-resistant pad plates 19 can reduce the wear loss of the chain plate 18 to a certain extent, the service life of the chain plate 18 is prolonged, and the mutual rotation between the chain plate 18 and between the chain plate 18 and the roller is facilitated. Similarly, the first roller 12 is rotatably mounted on the first mounting plate 111 via the first rotating shaft 122, and a wear pad 19 may be disposed between the first roller 12 and the first mounting plate 111. The second roller 13 is rotatably mounted on the second mounting plate 112 via a second rotating shaft 132, and a wear pad 19 may be disposed between the second roller 13 and the second mounting plate 112.

In one embodiment, referring to fig. 1, 6 and 7, a film stretching apparatus includes the film single-rail stretching chain clamp of any one of the above embodiments, and further includes a rail plate 20, the first roller 12 and the second roller 13 respectively contact and cooperate with an upper side and a lower side of one side surface of the rail plate 20 and roll along one side surface of the rail plate 20, and the third roller 14 contacts and cooperates with the other side surface of the rail plate 20 and rolls along the other side surface of the rail plate 20.

In the film stretching device, because the first roller 12 and the second roller 13 are respectively in contact fit with the upper side and the lower side of one side surface of the track plate 20 and roll along one side surface of the track plate 20, the third roller 14 is in contact fit with the other side surface of the track plate 20 and roll along the other side surface of the track plate 20, the orthographic first axis 121 of the first roller 12 on the first connecting plate 113 and the orthographic second axis 131 of the second roller 13 on the first connecting plate 113 are respectively located on two sides of the orthographic third axis 141 of the third roller 14 on the first connecting plate 113, on one hand, the chain clamp single body 10 can stably move along the track plate 20, on the other hand, more rollers are not needed, 6-9 rollers are not needed as in the conventional chain clamp single body 10, that is, the number of rollers can be reduced, so that when the chain clamp single body 10 is periodically disassembled, cleaned and maintained, the disassembly and assembly time of the rollers of the chain clamp single body 10 is shortened, and the working efficiency is higher; in addition, the first axis 121 of the orthographic projection of the first roller 12 on the first connecting plate 113 is offset toward one side with respect to the third axis 141 of the orthographic projection of the third roller 14 on the first connecting plate 113, the second axis 131 of the orthographic projection of the second roller 13 on the first connecting plate 113 is offset toward the other side with respect to the third axis 141 of the orthographic projection of the third roller 14 on the first connecting plate 113, the first axis 121, the second axis 131 and the third axis 141 are not coincident, that is, the first roller 12 is offset toward one side with respect to the third roller 14, and the second roller 13 is offset toward the other side with respect to the third roller 14, so that for the first bracket 11 of a unit width, the first roller 12, the second roller 13 and the third roller 14 with larger volume size can be installed, for the roller with large volume size, the shock resistance is stronger, the durability is stronger, so that after the maintenance replacement cycle time of the roller is pressed, the service life can be greatly prolonged.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A chain clamp monomer, comprising:

2. The chain clamp monomer of claim 1, wherein the first axis, the second axis and the third axis are both disposed in parallel, and a distance between the first axis and the third axis is equal to a distance between the second axis and the third axis.

3. The chain clamp monomer of claim 1, wherein the third roller is closer to the first connecting plate than the first roller and the second roller; the third roller is closer to the clamping assembly than the first roller and the second roller.

4. The chain clamp monomer of claim 1, wherein the first mounting plate, the first connecting plate, and the second mounting plate are of a unitary construction; the first support is a rigid support.

5. The chain clamp monomer according to claim 1, further comprising a fourth roller, wherein a hollow is provided on the first mounting plate, and the fourth roller is rotatably provided at the hollow; the fourth roller is used for being in contact fit with the top surface of the track plate and rolling along the top surface of the track plate.

6. The chain clamp unit as claimed in claim 1, wherein the clamping assembly comprises a second bracket detachably disposed on the first bracket and a rotating arm rotatably disposed on the second bracket; the second support comprises a supporting plate, and the clamping surface of the rotating arm is matched with the plate surface of the supporting plate to clamp the film to be processed.

7. The chain clamp unit as claimed in claim 6, wherein the second bracket further comprises a fixing plate and a second connecting plate, the fixing plate is connected to one end of the second connecting plate, and the fixing plate is detachably mounted on the first mounting plate; the fixing plate is provided with a first positioning hole, the first mounting plate is provided with a second positioning hole corresponding to the first positioning hole, and the fixing plate is inserted into the first positioning hole through the positioning piece, is connected with the first mounting plate through the second positioning hole and the first positioning hole; the other end of the second connecting plate is connected with the supporting plate; the orthographic projection of the supporting surface of the supporting plate on the first connecting plate is positioned in the middle of the first connecting plate.

8. A film single track tension chain clip, comprising two or more chain clip monomers as claimed in any one of claims 1 to 7 connected in series.

9. The film single track tension chain clip of claim 8, wherein said single body of said clip comprises a rotating shaft and a link plate, said rotating shaft being mounted to said first mounting plate, one end of said link plate being rotatably connected to said rotating shaft, the other end of said link plate being rotatably connected to the rotating shaft of another adjacent single body of said clip.

10. A film stretching apparatus comprising the film single-track stretching chain clamp according to claim 8, and a track plate, wherein said first roller and said second roller are respectively in contact engagement with upper and lower sides of one side surface of said track plate and roll along one side surface of said track plate, and said third roller is in contact engagement with the other side surface of said track plate and roll along the other side surface of said track plate.