阅读说明：本技术 一种pet薄片的传送机构 (Conveying mechanism for PET (polyethylene terephthalate) sheets ) 是由 宋拥军 伍锡焱 赵政 吴文兴 宋恺明 于 2021-11-19 设计创作，主要内容包括：本发明涉及一种PET薄片的传送机构,包括：容纳盒内用以收容堆叠的PET薄片；机架上设有支板；取料部安装在支板上；传动部,其内置有电机以驱动取料部；其中,还包括传输辊以及驱动传输辊的驱动部,支板包括导向槽,在传动部的作用下取料部沿导向槽限定方向在容纳盒与传输辊之间移动；取料部包括压合模组及吸盘模组,压合模组至少包括从动轮体以及压合在从动轮体上的配重块；取料部通过吸盘模组吸附容纳盒内最顶端的PET薄片,并在传动部的带动下PET薄片转移至传输辊的正上方,吸盘模组撤销吸附力后,在配重块的重力作用下,使得从动轮体将PET薄片压设在传输辊上,通过驱动部转动带动传输辊以实现PET薄片传送。(The invention relates to a PET thin sheet conveying mechanism, which comprises: the containing box is used for containing the stacked PET sheets; a support plate is arranged on the frame; the material taking part is arranged on the support plate; the transmission part is internally provided with a motor for driving the material taking part; the material taking part moves between the accommodating box and the conveying roller along the limiting direction of the guide groove under the action of the transmission part; the material taking part comprises a pressing module and a sucker module, and the pressing module at least comprises a driven wheel body and a balancing weight pressed on the driven wheel body; get material portion and adsorb the PET thin slice that holds the box topmost through the sucking disc module to PET thin slice shifts to the transmission roller directly over under the drive of transmission portion, after the sucking disc module withdraws the adsorption affinity, under the action of gravity of balancing weight, make from the wheel body press the PET thin slice to establish on the transmission roller, rotate through the drive division and drive the transmission roller in order to realize the conveying of PET thin slice.)

1. A PET sheet conveying mechanism, comprising:

a housing box (21) for housing therein the stacked PET sheets;

a frame (11) on which support plates (111) parallel to each other are arranged;

a take-out section (31) attached to the stay (111); and

a transmission part (32) which is internally provided with a motor (321) for driving the material taking part (31);

wherein the device also comprises a conveying roller (12) and a driving part (131) for driving the conveying roller (12), the support plate (111) comprises a guide groove (1111), and the material taking part (31) moves between the accommodating box (21) and the conveying roller (12) along the direction limited by the guide groove (1111) under the action of the transmission part (32);

the material taking part (31) comprises a pressing module (312) and a sucker module (311), wherein the pressing module (312) at least comprises a driven wheel body (31221) and a balancing weight (3123) pressed on the driven wheel body (31221);

get material portion (31) and pass through sucking disc module (311) adsorb hold the PET thin slice of the top in the box (21), and under the drive of transmission portion (32), the PET thin slice shifts to directly over transmission roller (12), sucking disc module (311) cancel behind the adsorption affinity under the action of gravity of balancing weight (3123), make from wheel body (31221) with PET thin slice pressure establish on transmission roller (12), through drive portion (131) rotate drive transmission roller (12) and then drive the PET thin slice along a direction of pay-off motion.

2. The conveying mechanism as claimed in claim 1, further comprising a conveying portion (13) having a roller set disposed therein, wherein the roller set comprises two rollers abutting against each other, and the conveying roller (12) and the conveying portion (13) are sequentially arranged along a feeding direction;

the driving part (131) drives the roller and the conveying roller (12) to rotate simultaneously through a transmission component, so that the PET sheets conveyed on the conveying roller (12) are conveyed to the conveying part (13).

3. The conveying mechanism as claimed in claim 2, wherein the number of the roller sets is at least two, a guiding portion (14) is provided between the two roller sets, and the PET sheet is driven by the roller set at the upstream end to be guided to the roller set at the downstream end along the guiding portion (14).

4. The transfer mechanism of claim 3, wherein the upstream end roller set is disposed adjacent to the transfer roller (12) such that the upstream end roller set is disposed upstream of the guide portion (14) in the feeding direction; and oppositely, the roller group at the downstream end is arranged at the downstream of the guide part (14) along the feeding direction.

5. The transmission mechanism as claimed in any one of claims 1 to 4, wherein the pressing module (312) comprises a pressing head unit (3122) and a fixing seat (3121), the pressing head unit (3122) is slidably connected to the fixing seat (3121), and the driven wheel body (31221) and the weight block (3123) are disposed on a support of the pressing head unit (3122).

6. The conveying mechanism as claimed in claim 5, wherein the support of the ram unit (3122) includes a guide post (31222), the guide post (31222) being fitted over the fixing seat (3121) so that the support can slide relative to the fixing seat (3121);

the body (31211) of the fixed seat (3121) is in a C-shaped structure, the weight block (3123) is installed on the guide column (31222) and the weight block (3123) is located in the inner hollow part of the body (31211);

the weight block (3123) floats up and down with the support in the inner hollow of the body (31211) in the direction defined by the guide post (31222).

7. The transmission mechanism as claimed in claim 6, wherein the body (31211) is pivotally connected with a buffer unit (3124), and a portion of the buffer unit (3124) extending from the top of the body (31211) into the hollow portion is a lower hook end (31243);

the weight block (3123) comprises at least two stacked block pieces, each block piece is provided with a yielding port (31231) corresponding to the lower hooking end (31243), the block pieces slide upwards to enable the lower hooking ends (31243) to extend into the yielding ports (31231), and then the block pieces are connected with the cache unit (3124) to enable the block pieces and the body (31211) to be in a relatively static state.

8. The transmission mechanism as claimed in claim 7, wherein an elastic unit (3125) is connected between the buffer unit (3124) and a base surface of the body (31211);

the buffer unit (3124) further comprises a force application end (31241) and a transition section (31242), wherein the force application end (31241), the transition section (31242) and the lower hook end (31243) are sequentially and integrally combined in the vertical direction, and the transition section (31242) is connected to the body (31211) through a pivot shaft;

when an external force is applied to the force application end (31241), the buffer unit (3124) rotates to cause the lower hooking end (31243) to be disconnected from the weight block (3123); meanwhile, the buffer unit (3124) is reset under the restoring force of the elastic unit (3125) after the external force is removed.

9. The conveying mechanism as claimed in claim 5, wherein the suction cup modules (311) are disposed at both sides of the press module (312), and when the suction cup modules (311) suck the PET sheets, the pressing head unit (3122) slides upward relative to the fixing base (3121) such that the lowest point of the driven wheel body (31221) in the vertical direction is flush or nearly flush with the sucking surface of the suction cup module (311), and the driven wheel body (31221) of the pressing head unit (3122) presses the PET sheets.

10. The conveying mechanism as claimed in claim 9, wherein a sensor (31212) is installed on the fixed seat (3121), and a sensing piece (31224) corresponding to the sensor (31212) is provided on the ram unit (3122);

the sensor (31212) is used for controlling the motor (321), and when the pressure head unit (3122) slides to a state that the lowest point in the vertical direction of the driven wheel body (31221) is flush or approximately flush with the suction surface on the suction cup module (311), the sensor (31212) is connected with the sensing piece (31224) in a sensing way.

11. The transfer mechanism according to any one of claims 1 to 4, wherein the material taking part (31) comprises a guiding and positioning rod (313), the pressing module (312) and the suction cup module (311) are connected to the guiding and positioning rod (313), the guiding and positioning rod (313) extends into the guiding groove (1111), the motor (321) is driven by the driving part (32) to slide along the guiding groove (1111), so that the material taking part (31) translates towards the transmission roller (12) to a position right above the transmission roller (12) after the material taking part (31) ascends from the accommodating box (21).

12. A transfer mechanism according to claim 11, characterized in that the guide groove (1111) comprises at least a feeding end (11111) and a translation section (11112), the feeding end (11111) extending in a vertical direction and the translation section (11112) extending in a direction perpendicular to the feeding end (11111) starting from the highest point of the feeding end (11111).

Technical Field

The invention relates to the field of automatic conveying, in particular to a conveying mechanism for PET (polyethylene terephthalate) sheets.

Background

The PET sheet is conveyed by the conveying roller in the process of conveying the PET sheet, the PET sheet needs to be grabbed at the front end of the conveying roller and then conveyed to the conveying roller, and the sucker mechanism adsorbs the PET sheet to be placed on the conveying roller and cooperates with the conveying roller to drive the PET sheet to move in the existing mechanism, however, in the practical use process, the inventor finds the following problems: firstly, after the PET sheet is placed on the conveying roller, the contact area between the PET sheet and the conveying roller is small, and the PET sheet is easy to slip with the conveying roller, so that the conveying is not smooth; secondly, the PET sheet is apt to scrape the suction cup mechanism during the movement with the transfer roller to accelerate the damage of the suction cup mechanism, and the scraping of the PET sheet against the suction cup mechanism also causes the PET sheet to be scratched.

In order to solve the above problems, a PET sheet conveying mechanism is urgently needed.

Disclosure of Invention

Aiming at the defects in the prior art, the invention mainly aims to provide the PET sheet conveying mechanism, which enables the gravity of the driven wheel body and the counter weight block to be in contact with the transmission roller through the pressing module in the material taking part so as to provide the friction force required by the movement of the PET sheet, thereby ensuring the smooth movement of the PET sheet and avoiding the slippage.

Another objective of the present invention is to provide a PET sheet conveying mechanism, which is provided with a buffer unit, so as to temporarily store the weight block in the buffer unit, and increase or decrease the gravity of the pressing module to adjust the clamping force between the conveying roller, so as to adapt to the requirements of PET sheets with different sizes on the clamping force.

To achieve the above objects and other advantages in accordance with the present invention, there is provided a PET sheet transfer mechanism including:

a housing box for housing therein the stacked PET sheets;

the rack is provided with support plates which are parallel to each other;

the material taking part is arranged on the support plate; and

the transmission part is internally provided with a motor for driving the material taking part;

the material taking part moves between the accommodating box and the conveying roller along the limiting direction of the guide groove under the action of the transmission part;

the material taking part comprises a pressing module and a sucker module, and the pressing module at least comprises a driven wheel body and a balancing weight pressed on the driven wheel body;

get material portion and adsorb the PET thin slice that holds the box topmost through the sucking disc module to under the drive of transmission portion, the PET thin slice shifts to the transmission roller directly over, behind the sucking disc module withdrawal adsorption affinity, under the action of gravity of balancing weight, make from the wheel body press the PET thin slice to establish on the transmission roller, rotate through the drive division and drive the transmission roller and then drive the PET thin slice and move along a pay-off direction.

Preferably, the conveying device also comprises a conveying part, wherein a roller group is arranged in the conveying part, the roller group comprises two rollers which are mutually butted, and the conveying roller and the conveying part are sequentially arranged along the feeding direction;

the driving part drives the roller and the transmission roller to rotate simultaneously through the transmission component, so that the PET sheets transmitted on the transmission roller are conveyed to the transmission part.

Preferably, the number of the roller groups is at least two, a guide part is arranged between the two roller groups, and the PET sheet is driven by the roller group at the upstream end to be guided to the roller group at the downstream end along the guide part.

Preferably, the upstream end roller group is arranged close to the conveying roller, so that the upstream end roller group is arranged at the upstream of the guide part along the feeding direction; and the downstream end roller group is arranged at the downstream of the guide part along the feeding direction.

Preferably, the pressfitting module includes pressure head unit and fixing base, and pressure head unit and fixing base sliding connection set up, and driven wheel body and balancing weight are located on the support of pressure head unit.

Preferably, the support of the pressure head unit comprises a guide post, and the guide post is sleeved on the fixed seat so that the support can slide relative to the fixed seat;

the body of the fixing seat is of a C-shaped structure, and the balancing weight is installed on the guide post and is positioned in the hollow part in the body;

the balancing weight floats up and down in the hollow part in the body along the limiting direction of the guide post along with the support.

Preferably, the body is pivoted with a cache unit, and the part of the cache unit extending into the hollow part from the top of the body is a lower hooking end;

wherein, the balancing weight includes two at least piled block spares, offers the mouth of stepping down that corresponds the end of linking with colluding down on each block spare, and the block spare upwards slides and makes and collude even end and stretch into in the mouth of stepping down, and then block spare and buffer unit are connected so that this block spare and body are in relative quiescent state.

Preferably, an elastic unit is connected between the buffer unit and a base surface of the body;

the buffer unit also comprises a force application end and a transition section, wherein the force application end, the transition section and the lower hook connecting end are sequentially and integrally combined in the vertical direction, and the transition section is connected with the body through a pivot shaft;

when external force is applied to the force application end, the buffer unit rotates to enable the lower hooking end to be disconnected with the balancing weight, and the balancing weight temporarily stored on the buffer unit falls back to the support; meanwhile, after the external force is removed, the buffer unit is reset under the action of the restoring force of the elastic unit.

Preferably, the sucking disc module sets up in the both sides of pressfitting module, and when the sucking disc module adsorbed the PET thin slice, the relative fixing base of pressure head unit upwards slided for the driven wheel body pressfitting on the pressure head unit is on the PET thin slice on the absorption face of the minimum parallel and level or approximate parallel and level sucking disc module on the driven wheel body vertical direction.

Preferably, the fixed seat is provided with a sensor, and the pressure head unit is provided with an induction sheet corresponding to the sensor;

the sensor is used for controlling the motor, and when the pressure head unit slides to the state of the lowest point parallel and level or the suction surface on the approximate parallel and level sucker module in the vertical direction of the driven wheel body, the sensor is connected with the induction sheet in an induction mode.

Preferably, get material portion and include the guide orientation pole, and pressfitting module, sucking disc module are connected on the guide orientation pole to, the guide orientation pole stretches into to the guide way, and the motor is under the transmission of transmission portion, and the guide orientation pole slides along the guide way, makes and gets material portion after rising from holding the box, gets material portion and translates to the transmission roller directly over.

Preferably, the guide groove at least comprises a feeding end and a translation section, the feeding end extends along the vertical direction, and the translation section extends along the direction perpendicular to the feeding end with the highest point of the feeding end as a starting point.

Compared with the prior art, the invention has the beneficial effects that:

the invention provides a conveying mechanism for PET (polyethylene terephthalate) sheets, which is characterized in that through a pressing module in a material taking part, the gravity of a driven wheel body and a counter weight is in contact with a transmission roller so as to provide friction force required by the movement of the PET sheets, so that the smooth movement of the PET sheets is ensured, and the PET sheets are prevented from slipping; simultaneously, drive the PET thin slice through the pressfitting module and move the pressfitting downwards at the transmission roller for the sucking disc module is located the transmission roller directly over, has avoided producing the scraping between the in-process sucking disc module of PET thin slice conveying on the transmission roller and PET thin slice, thereby has protected sucking disc module and PET thin slice.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings. The detailed description of the present invention is given in detail by the following examples and the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

FIG. 1 is a perspective view of a first perspective of a transport mechanism according to an embodiment of the present invention;

FIG. 2 is a perspective view of a second perspective of the transport mechanism according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a portion of a transfer mechanism according to an embodiment of the present invention;

FIG. 4 is an enlarged partial schematic view of FIG. 3;

FIG. 5 is a schematic perspective view of an upper frame of a transfer mechanism according to an embodiment of the present invention;

FIG. 6 is a schematic perspective view of a first perspective view of a material take-out section of a transport mechanism according to an embodiment of the present invention;

FIG. 7 is an exploded view of a take off section of a transfer mechanism according to one embodiment of the present invention;

FIG. 8 is an enlarged partial schematic view of FIG. 7;

FIG. 9 is a perspective view of a second perspective view of a material take-out section of a transport mechanism according to an embodiment of the present invention;

FIG. 10 is an enlarged partial schematic view of FIG. 9;

FIG. 11 is a partial cross-sectional view of the transfer mechanism of one embodiment of the present invention;

fig. 12 is a schematic view of the movement of the take-off section of the transfer mechanism in one embodiment of the present invention.

Description of reference numerals:

11. a frame;

111. a support plate; 1111. a guide groove; 11111. a feeding end; 11112. a translation section; 11113. a discharging end;

112. a base plate;

12. a transfer roller;

13. a transmission section; 131. a drive section; 132. a first roller; 133. a second roller;

14. a guide portion;

15. an auxiliary accessory; 151. a shifting sheet;

21. accommodating the box;

22. a limiting part;

31. a material taking part; 311. a suction cup module;

312. a pressing module;

3121. a fixed seat; 31211. a body; 31212. a sensor;

3122. a ram unit; 31221. a driven wheel body; 31222. a guide post; 31223. a receiving sheet; 31224. an induction sheet; 31225. a synchronization sheet;

3123. a balancing weight; 31231. a let position port;

3124. a buffer unit; 31241. a force application end; 31242. a transition section; 31243. a lower hooking end;

3125. an elastic unit;

313. guiding a positioning rod;

32. a transmission section; 321. a motor; 322. a gear; 323. a first link; 324. a second link; 325. a pulley.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the drawings, the shape and size may be exaggerated for clarity, and the same reference numerals will be used throughout the drawings to designate the same or similar components.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar language throughout the specification is not intended to imply any order, quantity, or importance, but rather the intention is to distinguish one element from another. Also, the use of the terms "a," "an," or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, etc., are defined with respect to the configurations shown in the respective drawings, and in particular, "height" corresponds to a dimension from top to bottom, "width" corresponds to a dimension from left to right, "depth" corresponds to a dimension from front to rear, which are relative concepts, and thus may be varied accordingly depending on the position in which it is used, and thus these or other orientations should not be construed as limiting terms.

Terms concerning attachments, coupling and the like (e.g., "connected" and "attached") refer to a relationship wherein structures are secured or attached, either directly or indirectly, to one another through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise.

According to an embodiment of the present invention, as can be seen in fig. 1 and 2, a PET sheet conveying mechanism includes: the accommodating box 21, the rack 11, the material taking part 31 and the transmission part 32, wherein the accommodating box 21 is used for accommodating the stacked PET sheets; the rack 11 is provided with support plates 111 which are parallel to each other, the rack 11 further comprises a bottom plate 112, and the support plates 111 are vertically arranged on the bottom plate 112; the material taking part 31 is arranged on the supporting plate 111, a motor 321 for driving the material taking part 31 is arranged in the transmission part 32, the motor 321 is arranged on the supporting plate 111, the transmission part 32 is driven by the motor 321 and transmitted to the material taking part 31, so that the material taking part 31 moves, and specifically the material taking part 31 grabs the PET sheets from the containing box 21 under the transmission action of the transmission part 32.

Wherein, the conveying mechanism also comprises a conveying roller 12 and a driving part 131 for driving the conveying roller 12, the support plate 111 comprises a guide groove 1111, part of the structure of the material taking part 31 extends into the guide groove 1111 and slides along the guide groove 1111, so that the material taking part 31 moves between the accommodating box 21 and the conveying roller 12 along the direction limited by the guide groove 1111 under the action of the transmission part 32; in this embodiment, the material taking part 31 at least comprises a pressing module 312 and a suction module 311, wherein the pressing module 312 at least comprises a driven wheel 31221 and a weight block 3123 pressed on the driven wheel 31221; the pressing module 312 presses the PET film on the conveying roller 12 by its own weight, thereby increasing the clamping force required for conveying the PET film, and preventing the slip phenomenon between the conveying roller 12 and the PET film due to insufficient friction.

Get material portion 31 and adsorb through sucking disc module 311 and hold the PET thin slice of the topmost in the box 21, and under the drive of transmission portion 32, get material portion 31 and snatch the PET thin slice and transfer to directly over the transmission roller 12 along the guide way 1111 is injectd, sucking disc module 311 cancels the adsorption affinity after, under the action of gravity of balancing weight 3123, pressfitting module 312 drives the PET thin slice and falls to transmission roller 12, make from the wheel body 31221 with the PET thin slice pressure establish on transmission roller 12, rotate through drive division 131 and drive transmission roller 12 and then drive the PET thin slice along a pay-off direction motion.

The conveying mechanism also comprises a conveying part 13, a plurality of groups of roller groups are arranged in the conveying part, and each roller group comprises two rollers which are mutually butted; the rollers include a first roller 132 and a second roller 133, one roller of the roller group is a driving wheel and the other is a driven wheel, the driving portion 131 drives the driving wheel to rotate, the PET sheet passes through the space between the first roller 132 and the second roller 133, the PET sheet is driven to advance by the friction force of the first roller 132 and the second roller 133 on the PET sheet, and meanwhile, the conveying rollers 12 and the conveying portion 13 are sequentially arranged along the feeding direction; the driving portion 131 drives the roller and the conveying roller 12 to rotate simultaneously through a transmission member, so that the PET sheets conveyed on the conveying roller 12 are conveyed to the conveying portion 13, in this embodiment, the transmission member in the driving portion 131 is a gear, and transmission is implemented through gear engagement.

The number of the roller groups is at least two, a guide part 14 is arranged between the two roller groups, the guide part 14 is erected between the two support plates 111, the PET sheet is driven by the roller group at the upstream end to be guided to the roller group at the downstream end along the guide part 14, the number of the guide part 14 is at least two, and the adjacent distance of the two guide parts 14 is approximate to the width of the PET sheet, so that the PET sheet is ensured to be abutted against the guide part 14 in the conveying process of the PET sheet; further, not less than two guide portions 14 are arranged along the axial direction of the roller, specifically, the number of the guide portions 14 is 5, so that PET sheets of different sizes are pressed on part or all of the guide portions 14 to guide the conveying of the PET sheets; on the other hand, the bottom of the accommodating box 21 is provided with the limiting part 22, the plurality of limiting parts 22 surround the containing cavities forming the PET thin sheets, and the limiting part 22 in the scheme is in a radial layout mode, so that the limiting parts 22 surround the containing cavities forming different sizes to be convenient for containing the PET thin sheets of different sizes.

The upstream end roller group is arranged close to the conveying roller 12, so that the upstream end roller group is arranged at the upstream of the guide part 14 along the feeding direction; correspondingly, the roller group at the downstream end is arranged at the downstream of the guide part 14 along the feeding direction; further, the guide portion 14 is tilted upward, and the surface of the guide portion 14 contacting the PET sheet is arc-shaped, and by arranging the surface of the guide portion 14 contacting the PET sheet to be arc-shaped, the smooth surface facilitates the PET sheet to move forward, the downstream end roller is arranged near the tilted end of the guide portion 14, and the upstream end roller set is arranged at the other end of the guide portion 14, and the PET sheet transferred thereto is guided by the upwardly tilted guide portion 14 to move upward along with the guide portion 14.

In a preferred embodiment, as shown in fig. 6 to 10, the pressing module 312 includes a pressing head unit 3122 and a fixing seat 3121, the pressing head unit 3122 is slidably connected to the fixing seat 3121; the driven wheel 31221 and the weight 3123 are respectively disposed on the support of the pressing head unit 3122, the driven wheel 31221 also serves as a pressing head of the pressing module 312, the self weight of the pressing module 312 (mainly the gravity is provided by the weight 3123) transmits the driven wheel 31221 to cause the driven wheel 31221 and the transmission roller 12 to clamp the PET sheet, so as to provide a friction force for pushing the PET sheet to advance, it should be noted that the friction force for pushing the PET sheet to advance is provided by the clamping force formed by the pressing module 312 and the transmission roller 12, and in this embodiment, the clamping force depends on the self weight of the pressing module 312, i.e., the weight of the weight 3123, so the following description about adjusting the weights of the pressing module 312 and the weight 3123, i.e., indicating the adjusting the friction force for pushing the PET sheet to advance.

Compared with the existing pressing scheme, such as the scheme of accumulating the elastic force as the pressing force through the deformation of the elastic part, the deformation degree of the elastic part is increased along with the increase of the movement distance of the pressing component, and the change of the deformation degree of the elastic part easily causes the fluctuation of the elastic force, wherein the deformation degree of the elastic part mainly depends on the stroke passed by the deformation, when the stroke has small deviation change, the elastic force generated by the deformation of the elastic part is easily suddenly increased or suddenly reduced, so that the phenomenon of clamping or slipping occurs, the transmission efficiency is influenced, in order to solve the problem, a high-precision driving component and more sensitive sensors are needed to ensure the precision of the stroke, and the complexity and the manufacturing cost of the whole mechanism are increased; utilize the dead weight of balancing weight 3123 to stabilize and conveniently adjust the mode in this scheme, the weight of balancing weight 3123 is certain, consequently the weight of whole pressfitting module 312 is stable at the pressfitting in-process, before carrying out the conveying action, and operating personnel can keep stably conveying the PET thin slice after to required gravity to the weight adjustment of pressfitting module 312.

Further, the support of the pressure head unit 3122 includes a guide post 31222, the guide post 31222 is sleeved on the fixing seat 3121, so that the support can slide relative to the fixing seat 3121; meanwhile, the body 31211 of the fixing seat 3121 is in a C-shaped structure, the weight 3123 is installed on the guide column 31222 and the weight 3123 is located in the inner hollow portion of the body 31211; a receiving piece 31223 is fixedly mounted on the guide column 31222, and the weight block 3123 is supported on the receiving piece 31223. Meanwhile, the weight 3123 floats up and down within the inner hollow of the body 31211 along the direction defined by the guide post 31222 with the support, so that the weight 3123 is defined within the body 31211.

The number of the guide posts 31222 is two, the top ends of the two guide posts 31222 are connected by a synchronizing piece 31225, the synchronizing piece 31225 is located above the main body 31211, the driven wheel body 31221 is arranged below the main body 31211, and the distance of the up-and-down sliding of the pressure head unit 3122 is limited by the synchronizing piece 31225 and the driven wheel body 31221.

Furthermore, the body 31211 is pivotally connected with a buffer unit 3124, a portion of the buffer unit 3124 extending from the top of the body 31211 into the hollow portion is a lower hooking end 31243, the weight block 3123 is sleeved on the guide column 31222 so that the weight block 3123 can slide up and down along the guide column 31222, when the weight block 3123 slides up, the weight block 3123 can temporarily store in the buffer unit 3124, and when the weight block 3123 temporarily exists in the buffer unit 3124, the weight of the weight block 3123 acts on the buffer unit 3124, so that the weight of the pressing module 312 is reduced; because the weight of the PET thin sheets with different sizes is different, the clamping force required by the driven wheel body 31221 and the transmission roller 12 is different, especially when the PET thin sheets with small transmission weight are switched to the PET thin sheets with large transmission weight from the PET thin sheets with small transmission weight, the clamping force provided by the pressing module 312 with small self weight is difficult to drive the PET thin sheets with large weight to easily slip, for the purpose of quickly adjusting the self weight of the pressing module 312, the clump weight 3123 is stored in the buffer unit 3124, compared with the prior art, the clump weight 3123 can be increased and decreased inwards after the material taking part 31 is detached, the time consumed in the weight adapting process is longer, in the scheme, the clump weight 3123 is reserved in the material taking part 31, the operation personnel can conveniently take and decrease the clump 3123 through up and down sliding, the steps required in the weight process of the pressing module 312 can be simplified, and the efficiency is improved.

Specifically, the weight block 3123 includes at least two stacked block members, each of which is provided with a yielding opening 31231 corresponding to the lower hooking end 31243, the block member slides upward so that the lower hooking end 31243 extends into the yielding opening 31231, and the block member is connected to the buffer unit 3124 so that the block member and the body 31211 are in a relatively static state.

An elastic unit 3125 is connected between the buffer unit 3124 and a base surface of the body 31211, the buffer unit 3124 further includes a force application end 31241 and a transition section 31242, wherein the force application end 31241, the transition section 31242 and the lower hook connecting end 31243 are sequentially and integrally combined along a vertical direction, and the transition section 31242 is connected with the body 31211 through a pivot shaft; the lower hooking end 31243 is a hook-shaped structure, and the lower hooking end 31243 passes through the abdicating opening 31231 and is hooked on the bottom surface of the weight block 3123.

When an external force is applied to the force application end 31241, the buffer unit 3124 rotates to cause the lower hooking end 31243 to be separated from the contact with the weight 3123 and the elastic unit 3125 is deformed by the force to accumulate the elastic force; after the external force is removed, under the action of the restoring force of the elastic unit 3125, the buffer unit 3124 resets so that the buffer unit 3124 can continue to buffer the counterweight 3123, and the elastic unit 3125 is connected with the buffer unit 3124, so that an operator can conveniently fetch and store the counterweight 3123.

The buffer unit 3124 is disposed on two opposite sides of the body 31211, the lower hooking end 31243 is formed by extending from one side of the transition section 31242, the force application end 31241 is formed by extending from the other end of the transition section 31242 opposite to the lower hooking end 31243, when an external force acts on the force application end 31241 on the buffer unit 3124 to close, the lower hooking end 31243 is opened, so that the lower hooking end 31243 is retracted into the receding opening 31231 to be separated from the connection with the weight block 3123, so that the temporarily stored weight block 3123 falls back onto the pressing module 312, and the self weight of the pressing head unit 3122 is increased.

The sucker modules 311 are arranged on two sides of the pressing module 312, when the sucker modules 311 suck the PET sheets, the pressing head unit 3122 slides upwards relative to the fixing seat 3121, so that the lowest point of the driven wheel body 31221 in the vertical direction is flush or approximately flush with the sucking surface of the sucker module 311, and the driven wheel body 31221 of the pressing head unit 3122 contacts with the surface of the PET sheets; when the suction cup module 311 sucks the PET sheet, the PET sheet abuts against the pressing module 312 so that the gravity of the pressing module 312 acts on the PET sheet, and the suction force of the suction cup module 311 is greater than the gravity of the pressing module 312 so as to enable the material taking part 31 to grab the PET sheet, and in order to avoid the pressing module 312 from bending the PET sheet, the suction cup modules 311 are disposed at both sides of the pressing module 312, the lowest point in the vertical direction of the driven wheel body 31221 is approximately flush with the suction surface of the suction cup module 311, the self weight of the pressing head unit 3122 acts on the PET sheet sucked by the suction cup module 311, because the PET sheet is made of a flexible material, under the influence of the gravity of the pressing head unit 3122, the PET sheet can deform to a small extent so that the contact position between the PET sheet and the driven wheel body 31221 is recessed downward, thereby causing the lowest point in the vertical direction of the driven wheel body 31221 to be slightly lower than the suction surface of the suction cup module 311, which in this case is considered to be approximately flush with each other.

As shown in fig. 11, in the present solution, a sensor 31212 is installed on the fixed seat 3121, and a sensing piece 31224 corresponding to the sensor 31212 is installed on the ram unit 3122; the sensor 31212 is used for controlling the motor 321, and when the pressing head unit 3122 slides to the state where the lowest point in the vertical direction of the driven wheel body 31221 is flush or approximately flush with the suction surface on the suction cup module 311, the sensor 31212 is connected with the sensing piece 31224 in a sensing manner; specifically, response piece 31224 sets up on the mounting bracket that bears driven wheel body 31221 for response piece 31224 is located the below of body 31211, and simultaneously, sensor 31212 sets up in the hollow portion of body 31211, for the convenience response of response piece 31224 and sensor 31212 be connected, has seted up the hole of stepping down at the position department that body 31211 corresponds response piece 31224, and response piece 31224 vertically upwards extends so that this response piece 31224 passes the hole of stepping down and stretch into in the hollow portion with sensor 31212 looks adaptation.

It should be noted that the sensor 31212 is not limited to the control motor 321, and the sensor 31212 may also be electrically connected to the driving portion 131 and the suction module, so as to control the operation of the transmission portion 13 and the suction cup module 311, so that in the movement process of the material taking portion 31, the transmission portion 13 and the suction cup module 311 cooperate with each other, wherein the suction module is connected to the air pump, an electromagnetic valve is disposed between a passage formed by the suction cup module 311 and the air pump, the suction module adsorbs and releases the PET sheet through an electromagnetic valve switch, the air pump operates on the suction module to form a negative pressure environment at a position of the adsorption head, so that the PET sheet is adsorbed on the adsorption head of the suction module, and after the PET sheet is completely attached to the adsorption head of the suction module, the electromagnetic valve is closed to form a negative pressure space in the suction module, so as to ensure that the PET sheet is stably attached to the suction module; after the electromagnetic valve is closed, the air pump stops working, and if the air pump continuously works to adsorb the PET thin sheet, the suction force applied to the PET thin sheet is gradually increased, so that the suction module and the position of the PET thin sheet can be damaged.

The material taking part 31 comprises a guiding and positioning rod 313, and the pressing module 312 and the sucking disc module 311 are connected to the guiding and positioning rod 313; specifically, the guiding and positioning rod 313 penetrates through the pressing module 312 and the suction cup module 311 so that the guiding and positioning rod 313 extends into the guiding groove 1111, and the motor 321 slides along the guiding groove 1111 under the driving action of the driving part 32, so that the material taking part 31 is translated to the right above the conveying roller 12 towards the conveying roller 12 after the material taking part 31 is lifted from the containing box 21.

As shown in fig. 5 and 12, the guiding groove 1111 at least includes a feeding end 11111 and a translating section 11112, the feeding end 11111 extends along a vertical direction, and the translating section 11112 extends along a direction perpendicular to the feeding end 11111 with a highest point of the feeding end 11111 as a starting point; the guide groove 1111 further includes a discharging end 11113, the feeding end 11111 is disposed at one end of the translation section 11112, the discharging end 11113 is disposed at the other end of the translation section 11112, the extending direction of the discharging end 11113 is parallel to the extending direction of the feeding end 11111, when the taking part 31 translates to the right above the conveying roller 12 towards the conveying roller 12, the taking part 31 moves downward along the discharging end 11113 to be close to the conveying roller 12, so that the distance range of the adsorption surface of the suction cup module 311 from the conveying roller 12 is 5-10mm, when the suction cup module 311 adsorbs a PET sheet, the two sides of the PET sheet sag due to self gravity, the distance range of the adsorption surface of the suction cup module 311 from the conveying roller 12 is 5-10mm, and interference between the two sides of the PET sheet and the conveying roller 12 in the PET sheet conveying process is avoided.

In a preferred embodiment, as shown in fig. 3 and 4, the transmission part 32 transmits through a gear 322, the gear 322 is connected with a first link 323, one end of the first link 323 is mounted on the gear 322, the other end of the first link 323 is pivoted with a second link 324, the guiding and positioning rod 313 is connected to the other end of the second link 324, a pulley 325 is mounted on the guiding and positioning rod 313, and the pulley 325 is located in the guiding groove 1111; the motor 321 drives the gear 322 to drive the first link 323, and the pulley 325 slides along the guide groove 1111 as the first link 323 drives the second link 324.

In a preferred embodiment, the conveying mechanism further comprises an auxiliary accessory 15, the auxiliary accessory 15 comprises a connecting rod and a shifting piece 151, the connecting rod penetrates through the shifting piece 151 and is connected to the supporting plate 111, the shifting piece 151 is located on a moving path of the material taking part 31, mutual adsorption phenomena are easily generated among stacked PET sheets due to small air pressure, when the material taking part 31 grabs and moves the topmost PET sheet, the topmost PET sheet is adsorbed to the lower PET sheet and is taken out together, the shifting piece 151 scrapes the PET sheet to fill air among the PET sheets, so that the lower PET sheet is peeled off, and particularly, the shifting piece 151 is located on an upward moving path of the material taking part 31, so that the peeled PET sheet can be ensured to fall back into the accommodating box 21; on the other hand, the contact surface of the poking piece 151 and the PET sheets is in a step shape, so that the PET sheets are poked and pushed to generate dislocation, and air is filled into a negative pressure space in the stroke between the PET sheets as soon as possible so as to separate the PET sheets from the PET sheets.

While embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields of application of the invention, and further modifications may readily be effected by those skilled in the art, so that the invention is not limited to the specific details without departing from the general concept defined by the claims and the scope of equivalents.