阅读说明：本技术 一种覆膜机的上膜机构 (Film feeding mechanism of film laminating machine ) 是由 虞孟谦 林德顺 钟学洲 于 2020-07-09 设计创作，主要内容包括：本发明涉及一种覆膜机的上膜机构,涉及覆膜机的技术领域,其包括有安装台,所述安装台上安装有支撑座,所述支撑座上转动安装有转动座；所述安装台上安装有驱动机构,所述转动座上开设有沿转动座长度方向的滑道,所述滑道沿转动座的中心轴呈周向环绕设置；所述滑道内沿水平方向滑动设置有取筒板,所述滑道内还设置有沿取筒板移动方向伸缩的复位弹簧,所述安装台上还安装有位于支撑座一侧的操作台,所述操作台上设置有开口正对转动座的取筒机构；所述操作台上还设置有位于取筒机构远离转动座一侧的上筒机构；所述操作台上还设置有位于取筒机构与上筒机构之间的落筒通道；本发明具有能实现自动更换薄膜套筒,提高更换效率的效果。(The invention relates to a film feeding mechanism of a film laminating machine, which relates to the technical field of film laminating machines and comprises an installation platform, wherein a supporting seat is installed on the installation platform, and a rotating seat is rotatably installed on the supporting seat; the installation table is provided with a driving mechanism, the rotating seat is provided with a slide way along the length direction of the rotating seat, and the slide way is circumferentially arranged along the central shaft of the rotating seat; a barrel taking plate is arranged in the slide way in a sliding mode along the horizontal direction, a return spring which stretches along the moving direction of the barrel taking plate is further arranged in the slide way, an operating platform which is located on one side of the supporting seat is further mounted on the mounting platform, and a barrel taking mechanism with an opening facing the rotating seat is arranged on the operating platform; the operating platform is also provided with an upper barrel mechanism which is positioned on one side of the barrel taking mechanism away from the rotating seat; a cylinder dropping channel between the cylinder taking mechanism and the cylinder loading mechanism is also arranged on the operating platform; the invention has the effects of realizing automatic replacement of the film sleeve and improving the replacement efficiency.)

1. A film feeding mechanism of a film laminating machine comprises an installation table (1), wherein a supporting seat (2) which slides along the horizontal direction is installed on the installation table (1), and a rotating seat (3) which is horizontally arranged is installed on the supporting seat (2) in a rotating mode; the method is characterized in that: the mounting table (1) is provided with a driving mechanism (10) for driving the supporting seat (2) to slide, the rotating seat (3) is provided with a plurality of slideways (31) along the length direction of the rotating seat (3), and the slideways (31) are circumferentially arranged along the central axis of the rotating seat (3); a barrel taking plate (32) is arranged in the slide way (31) in a sliding manner along the horizontal direction, and one end of the barrel taking plate (32) extends out of the slide way (31); a return spring (33) which stretches along the moving direction of the tube taking plate (32) is further arranged in the slide way (31), one end of the return spring (33) is fixed with the tube taking plate (32), and the other end of the return spring (33) is fixed with the inner side wall of the slide way (31) close to one side of the supporting seat (2); an operating platform (4) positioned on one side of the supporting seat (2) is further mounted on the mounting platform (1), a cylinder taking mechanism (5) with an opening facing the rotating seat (3) is arranged on the operating platform (4), and the opening of the cylinder taking mechanism (5) stretches under the action of a driving source; the operating platform (4) is also provided with an upper barrel mechanism (6) which is positioned on one side of the barrel taking mechanism (5) far away from the rotating seat (3), the front end of the upper barrel mechanism (6) is right opposite to the opening center of the barrel taking mechanism (5), and the upper barrel mechanism (6) is arranged along the moving direction of the supporting seat (2); the film taking device is characterized in that a doffing channel (43) located between the bobbin taking mechanism (5) and the bobbin loading mechanism (6) is further arranged on the operating table (4), and the film sleeves taken down by the bobbin taking mechanism (5) are discharged from the operating table (4) through the doffing channel (43).

2. The film feeding mechanism of a film laminating machine according to claim 1, wherein: the tube taking mechanism (5) comprises two tube taking pieces (51) which are oppositely arranged, a limiting plate (52) is formed at one end of each tube taking piece (51) close to the rotating seat (3), and the two limiting plates (52) are bent towards the direction of mutual approaching; all install first cylinder (41) on the lateral wall that operation panel (4) deviate from each other, the piston rod of first cylinder (41) stretches into in operation panel (4) and is fixed with respectively adjacent get a section of thick bamboo spare (51).

3. The film feeding mechanism of a film laminating machine according to claim 2, wherein: an assembly cavity (42) between the cylinder taking mechanism (5) and the cylinder loading mechanism (6) is formed in the operating table (4); the upper cylinder mechanism (6) comprises a second air cylinder (61) fixedly mounted on the operating platform (4), and a piston rod of the second air cylinder (61) is arranged along the sliding direction of the supporting seat (2); the upper cylinder mechanism (6) further comprises a pushing cylinder pipe (62) fixedly arranged on a piston rod of the second air cylinder (61), and an opening of the pushing cylinder pipe (62) is opposite to the rotating seat (3); the opening diameter of the bobbin pushing tube (62) is larger than the diameter of the rotating seat (3), and a positioning rod (63) positioned in the center is arranged in the bobbin pushing tube (62); the positioning rod (63) is arranged along the length direction of the push barrel pipe (62), and one side, facing the push barrel pipe (62), of the rotating seat (3) is provided with a yielding groove (64) for the insertion of the positioning rod (63).

4. The film feeding mechanism of a film laminating machine according to claim 1, wherein: the rotating seat (3) is further provided with a sliding groove (34) along the length direction of the sliding rail (31), a first screw rod (36) is rotatably mounted in the sliding groove (34), and the first screw rod (36) is placed along the length direction of the sliding groove (34); the first screw rod (36) is in threaded connection with a limiting block (35), and the limiting block (35) is arranged in the sliding groove (34) in a sliding mode along the length direction of the first screw rod (36); one end, far away from the first screw rod (36), of the limiting block (35) extends out of the sliding groove (34), and the extending part of the limiting block (35) is smaller than the extending part of the cylinder taking plate (32) from the sliding way (31).

5. The film feeding mechanism of a film laminating machine according to claim 1, wherein: the operating table (4) is also provided with a barrel feeding mechanism (7) positioned on one side of the barrel feeding mechanism (6); the tube feeding mechanism (7) comprises a tube feeding channel (71) with one end communicated with the inside of the operating platform (4) and a partition plate (72) for separating the film sleeves; a retreat groove (74) is formed in the barrel feeding channel (71), and the partition plate (72) is arranged in the retreat groove (74) in a sliding manner along a direction perpendicular to the barrel feeding channel (71); a third air cylinder (73) is further installed on the outer side of the cylinder conveying channel (71), and a piston rod of the third air cylinder (73) extends into the retreat groove (74) and is fixedly connected with the partition plate (72).

6. The film feeding mechanism of a film laminating machine according to claim 1, wherein: a barrel conveying mechanism (8) positioned between the barrel loading mechanism (6) and the barrel taking mechanism (5) is arranged in the operating table (4); the cylinder conveying mechanism (8) comprises a plurality of supporting rods (81) which are arranged along the upper cylinder direction vertical to the upper cylinder mechanism (6), and the supporting rods (81) are sequentially arranged at intervals along the upper cylinder direction of the upper cylinder mechanism (6); the drum conveying mechanism (8) also comprises a roller (82) which is rotatably arranged on the supporting rod (81); the roller (82) and the supporting rod (81) are coaxially arranged, and the roller (82) rotates along the upper drum direction of the upper drum mechanism (6); the cylinder conveying mechanism (8) is horizontally laid below the cylinder feeding mechanism (6) and the cylinder taking mechanism (5).

7. The film feeding mechanism of a film laminating machine according to claim 1, wherein: the mounting table (1) is provided with a sliding rail (9) which is horizontally arranged, and the lower end of the supporting seat (2) is arranged on the sliding rail (9) in a sliding manner; the driving mechanism (10) comprises a motor (101) fixedly arranged on the mounting table (1) and a second screw rod (102) with one end fixed with an output shaft of the motor (101); the second screw rod (102) is placed along the length direction of the sliding rail (9), and one end, far away from the motor (101), of the second screw rod (102) is connected to the supporting seat (2) in a threaded mode.

8. The film feeding mechanism of a film laminating machine according to claim 7, wherein: an infrared sensor (11) is arranged on the supporting seat (2), and the infrared sensor (11) is positioned on one side of the rotating seat (3); and the infrared sensor (11) is electrically connected with the driving mechanism (10).

Technical Field

The invention relates to the technical field of laminating machines, in particular to a film feeding mechanism of a laminating machine.

Background

Currently, film laminating machines can be classified into two major types, namely, immediate-coating type film laminating machines and precoating type film laminating machines. Is a special device for paper and film. The instant coating type film laminating machine comprises three parts of gluing, drying and hot pressing, has wide application range and stable and reliable processing performance, and is a film laminating device widely used in China.

As shown in fig. 1, a film laminating machine for packaging bags in the existing market comprises a machine table 12, wherein an oven 13, a plurality of driving rollers 14 rotatably mounted on the inner side wall of the machine table 12 and a film laminating seat 15 positioned behind the driving rollers 14 are sequentially mounted on the machine table 12; the film coating seat 15 is fixedly arranged on the machine table 12, a driving roller 16 parallel to the driving roller 14 is rotatably arranged on the film coating seat 15, a film sleeve is fixedly sleeved on the driving roller 16, and the film sleeve rotates along with the driving roller 16; before the film laminating machine works, packaging bags to be laminated are sequentially tensioned between transmission rollers, then a film wound on a film sleeve is pulled out and is attached to one side of the packaging bags, and the film is attached to the surface of the packaging bags through glue to realize film lamination on one side of the packaging bags; and finally, the solidification and drying of the glue are accelerated through the oven, so that the film is quickly fixed and attached to one side of the packaging bag.

The above prior art solutions have the following drawbacks: after the film on the film sleeve is used up, the used film sleeve needs to be taken out of the driving roller manually, and a new film sleeve is sleeved on the driving roller again; in order to ensure that the film sleeve can rotate along with the driving roller, the inner side wall of the film sleeve needs to be tightly attached to the outer side wall of the driving roller; therefore, the film sleeve is difficult to disassemble and replace manually and smoothly, and the working efficiency is reduced.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a film feeding mechanism of a film laminating machine, which has the effects of automatically replacing a film sleeve and improving the replacement efficiency.

The technical purpose of the invention is realized by the following technical scheme:

a film feeding mechanism of a film laminating machine comprises an installation platform, wherein a supporting seat which slides along the horizontal direction is installed on the installation platform, and a rotating seat which is horizontally placed is installed on the supporting seat in a rotating mode; the mounting table is provided with a driving mechanism for driving the supporting seat to slide, the rotating seat is provided with a plurality of slideways along the length direction of the rotating seat, and the slideways are circumferentially arranged along the central shaft of the rotating seat; a barrel taking plate is arranged in the slide way in a sliding manner along the horizontal direction, and one end of the barrel taking plate extends out of the slide way; a return spring which stretches along the moving direction of the barrel taking plate is further arranged in the slide way, one end of the return spring is fixed with the barrel taking plate, and the other end of the return spring is fixed with the inner side wall of the slide way, close to one side of the supporting seat; the mounting table is also provided with an operating table positioned on one side of the supporting seat, the operating table is provided with a cylinder taking mechanism with an opening opposite to the rotating seat, and the opening of the cylinder taking mechanism stretches under the action of the driving source; the operating platform is also provided with an upper barrel mechanism positioned on one side of the barrel taking mechanism away from the rotating seat, the front end of the upper barrel mechanism is over against the center of an opening of the barrel taking mechanism, and the upper barrel mechanism is arranged along the moving direction of the supporting seat; and a doffing channel positioned between the bobbin taking mechanism and the bobbin loading mechanism is also arranged on the operating platform, and the doffing channel is used for discharging the film sleeve taken down by the bobbin taking mechanism from the operating platform.

By adopting the technical scheme, when the film sleeve on the rotating seat is used up, the supporting seat is pushed to move towards the direction close to the operating platform by the driving mechanism; the rotating seat inserts the film sleeve carrying the used film sleeve from the opening of the tube taking mechanism, and when the tube taking plate enters the tube taking mechanism along with the rotating seat, the opening of the tube taking mechanism is contracted under the action of the driving source; at the moment, the opening of the cylinder taking mechanism can clamp the cylinder taking plate, and then the driving mechanism drives the supporting seat to move towards the direction far away from the opening of the cylinder taking mechanism; with the continuous retraction of the rotating seat, the tube taking plate can push out the used film sleeve smoothly from one end of the rotating seat under the action of the tube taking mechanism; the pushed film sleeves fall into the doffing channel and are sent out from the operating platform through the doffing channel, so that the used film sleeves are collected uniformly; when the film sleeve is taken out of the rotating seat, the opening of the tube taking mechanism is reset, and at the moment, the tube taking plate realizes springback reset under the action of a reset spring; then the driving mechanism pushes the rotating seat to be inserted from the opening of the tube taking mechanism again, and then the tube feeding mechanism pushes a new film sleeve to be inserted on the rotating seat; after the new film sleeve is installed, the driving mechanism drives the rotating seat to withdraw from the opening of the tube taking mechanism.

The invention is further configured to: the cylinder taking mechanism comprises two cylinder taking pieces which are oppositely arranged, a limiting plate is formed at one end of each cylinder taking piece close to the rotating seat, and the two limiting plates are bent towards the direction close to each other; all install first cylinder on the lateral wall that the operation panel deviates from each other, the piston rod of first cylinder stretches into in the operation panel and is fixed with respectively adjacent a section of thick bamboo spare of getting.

By adopting the technical scheme, when the cylinder taking plate enters the operating platform from the opening formed by the two cylinder taking pieces, the cylinder taking pieces on the two sides move towards the direction close to each other under the driving of the first air cylinder; when the cylinder taking plates are in contact with the cylinder taking pieces which are opposite to each other, the cylinder taking plates can be limited in the operation table through the limiting plates; when the rotating seat gradually withdraws from the direction far away from the tube taking mechanism, the tube taking plate can more smoothly take out the exhausted film sleeve from the rotating seat at the limit of the limit plate.

The invention is further configured to: an assembly cavity between the cylinder taking mechanism and the cylinder loading mechanism is formed in the operating platform; the upper cylinder mechanism comprises a second cylinder fixedly arranged on the operating platform, and a piston rod of the second cylinder is arranged along the sliding direction of the supporting seat; the upper cylinder mechanism also comprises a pushing cylinder pipe fixedly arranged on a piston rod of the second cylinder, and an opening of the pushing cylinder pipe is opposite to the rotating seat; the opening diameter of the push tube is larger than that of the rotating seat, and a positioning rod positioned in the center is arranged in the push tube; the positioning rod is arranged along the length direction of the bobbin pushing tube, and one side of the rotating seat facing the bobbin pushing tube is provided with a yielding groove for the insertion of the positioning rod.

By adopting the technical scheme, when the front end of the rotating seat moves to the assembly cavity, the pushing tube is driven by the second cylinder to push a new film sleeve to gradually approach from the rotating seat; the central through hole of the film sleeve is pushed by the push barrel pipe to be inserted from the front end of the rotating seat, and the positioning rod is gradually inserted into the abdicating groove along with the push barrel pipe; when the film sleeve is tightly inserted, the push sleeve pipe can be more stable through the positioning rod, and meanwhile, the situation that the push sleeve pipe deviates can be avoided; when the positioning rod is completely inserted into the yielding groove, the maximum moving range of the tube pushing tube can be limited through the positioning rod, and the tube pushing tube is prevented from being excessively inserted.

The invention is further configured to: the rotating seat is also provided with a sliding groove along the length direction of the sliding way, a first screw rod is rotatably mounted in the sliding groove, and the first screw rod is placed along the length direction of the sliding groove; the first screw rod is in threaded connection with a limiting block, and the limiting block is arranged in the sliding groove in a sliding manner along the length direction of the first screw rod; one end of the limiting block, which is far away from the first screw rod, extends out of the sliding groove, and the extending part of the limiting block is smaller than the part of the barrel taking plate extending out of the sliding way.

By adopting the technical scheme, when the width of the film sleeve to be installed is changed, the limiting block can be moved to a proper position of the rotating seat according to the actual width of the film sleeve; the specific operation is that the limiting block horizontally slides along the length of the first screw rod by rotating the first screw rod; after the distance between the limiting block and the front end of the rotating seat is adjusted to the required length, when the film sleeve is inserted from the front end of the rotating seat by the upper cylinder mechanism, the purpose of limiting and fixing the film sleeves with different widths can be realized by the contact between one side of the film sleeve and the limiting block; thereby satisfying the installation requirements of the film sleeves with different widths and enlarging the application range.

The invention is further configured to: the operating platform is also provided with a barrel feeding mechanism positioned on one side of the barrel loading mechanism; the tube feeding mechanism comprises a tube feeding channel with one end communicated with the inside of the operating platform and a partition plate for separating the film sleeve; a retreat groove is formed in the barrel feeding channel, and the partition plate is arranged in the retreat groove in a sliding manner along a direction perpendicular to the barrel feeding channel; and a third cylinder is further installed on the outer side of the cylinder conveying channel, and a piston rod of the third cylinder extends into the retreat groove and is fixedly connected with the partition plate.

By adopting the technical scheme, new film sleeves are sequentially placed in the tube feeding channel, when the tube feeding mechanism feeds tubes, the partition plate is driven by the third air cylinder to extend out of the retreat groove, and the film sleeves at the rear part can be blocked in the tube feeding channel through the partition plate, so that the film sleeves are prevented from entering the operation table; after the drum feeding mechanism finishes drum feeding, the third cylinder drives the partition plate to retreat into the retreat groove, and a new film sleeve falls to the front end of the drum feeding mechanism from the drum feeding channel; then the third cylinder immediately extends the partition plate out of the retreat groove so as to prevent the rear film sleeve from rolling off continuously; the automatic supplement of the film sleeves is realized through the sleeve feeding mechanism, and a plurality of film sleeves can be placed at one time, so that the replacement efficiency can be improved; meanwhile, the working personnel can observe the use condition of the film sleeve more visually, and statistics is facilitated.

The invention is further configured to: a barrel conveying mechanism positioned between the barrel loading mechanism and the barrel taking mechanism is arranged in the operating platform; the barrel conveying mechanism comprises a plurality of support rods which are arranged along the upper barrel direction vertical to the upper barrel mechanism, and the support rods are sequentially arranged at intervals along the upper barrel direction of the upper barrel mechanism; the drum conveying mechanism also comprises a drum which is rotatably arranged on the supporting rod; the roller and the supporting rod are coaxially arranged, and the roller rotates along the upper drum direction of the upper drum mechanism; the cylinder conveying mechanism is horizontally laid below the cylinder feeding mechanism and the cylinder taking mechanism.

By adopting the technical scheme, when a new film sleeve is sent out from the tube feeding channel, the new film sleeve falls on the tube conveying mechanism; when the upper drum mechanism pushes the film sleeve to the direction close to the rotating seat, the film sleeve can be more smoothly inserted into the front end of the rotating seat under the transmission of the roller; through the rolling friction on the surface of the roller and the film sleeve, the friction force borne by the film sleeve when the film sleeve moves can be reduced, so that the film on the film sleeve can be protected, and the abrasion of the film when the film is fed into the drum can be reduced.

The invention is further configured to: the mounting table is provided with a slide rail which is horizontally arranged, and the lower end of the supporting seat is arranged on the slide rail in a sliding manner; the driving mechanism comprises a motor fixedly arranged on the mounting table and a second screw rod, and one end of the second screw rod is fixed with an output shaft of the motor; the second lead screw is placed along the length direction of the sliding rail, and one end, far away from the motor, of the second lead screw is connected to the supporting seat through threads.

By adopting the technical scheme, when the second screw rod is driven by the motor to rotate, the supporting seat correspondingly moves left and right along the laying direction of the sliding rail; the supporting seat can be more stable when moving through the second lead screw, and the supporting seat can be conveniently slid leftwards and rightwards.

The invention is further configured to: the supporting seat is provided with an infrared sensor which is positioned on one side of the rotating seat; and the infrared sensor is electrically connected with the driving mechanism.

By adopting the technical scheme, the infrared sensor is used for sensing the area of the packaging bag to be coated, when the rotating seat provided with the new film sleeve is driven by the second screw rod to gradually move out of the operating platform, and when the infrared sensor senses the mark on the packaging bag, the infrared sensor transmits an electric signal to the driving mechanism to stop the driving mechanism; therefore, the rotating seat can be accurately positioned to the designated position, and the film coating of the packaging bag area to be coated is realized.

In conclusion, the beneficial effects of the invention are as follows:

1. when the film sleeve on the rotating seat is used up, the used film sleeve can be taken out from the front end of the rotating seat through the cylinder taking mechanism, and the used film sleeve is sent out from the cylinder falling channel; a new film sleeve can be tightly inserted on the rotating seat through the upper barrel mechanism, so that the automatic replacement of the film sleeve is realized, the film sleeve is more convenient than manual replacement, and the replacement efficiency is improved; the automation degree is high.

2. The automatic supplement to the film sleeves is realized through the film feeding mechanism, a plurality of film sleeves can be placed at one time, and the working personnel can observe the use condition of the film sleeves more visually, so that statistics is facilitated.

Drawings

FIG. 1 is a schematic view of the overall structure of a conventional film laminating machine for packaging bags, which is commercially available and is provided with a film sleeve;

FIG. 2 is a schematic view of the overall structure of the present invention when installed on a machine;

FIG. 3 is a schematic sectional view showing a part of the interior of the operation table according to the present invention;

FIG. 4 is an exploded view of the present invention highlighting the local structure at the rotating base;

FIG. 5 is an exploded view of a portion of the structure at the highlighting cartridge mechanism of the present invention;

FIG. 6 is a schematic view showing a partial structure of the cam follower mechanism of the present invention.

Reference numerals: 1. an installation table; 10. a drive mechanism; 11. an infrared sensor; 2. a supporting seat; 3. a rotating seat; 31. a slideway; 32. taking a barrel plate; 33. a return spring; 34. a chute; 35. a limiting block; 36. a first lead screw; 4. an operation table; 41. a first cylinder; 42. an assembly chamber; 43. a doffing channel; 5. a cylinder taking mechanism; 51. taking a barrel part; 52. a limiting plate; 6. a bobbin loading mechanism; 61. a second cylinder; 62. pushing the bobbin; 63. positioning a rod; 64. a yielding groove; 7. a barrel feeding mechanism; 71. a barrel feeding channel; 72. a partition plate; 73. a third cylinder; 74. a withdrawal groove; 8. a barrel conveying mechanism; 81. a support bar; 82. a drum; 9. a slide rail; 10. a drive mechanism; 101. a motor; 102. a second lead screw; 12. a machine platform; 13. an oven; 14. a driving roller; 15. a film coating seat; 16. and driving the roller.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 2 and 3, the film feeding mechanism of the film laminating machine disclosed by the invention comprises an installation table 1 with a horizontally arranged upper surface, wherein an operation table 4 and a vertically arranged support seat 2 are sequentially arranged on the upper surface of the installation table 1 from left to right. The upper end of the supporting seat 2 is rotatably provided with a rotating seat 3 which is horizontally placed, and the rotating seat 3 is in a long cylinder shape and the front end of the rotating seat is aligned with the operating platform 4. The upper end of the supporting seat 2 is also provided with a servo motor with an output shaft fixed with the central shaft of the rotating seat 3, and the rotating seat 3 is driven by the servo motor to rotate around the central shaft per se along the vertical direction. An upper barrel mechanism 6, a barrel conveying mechanism 8 and a barrel taking mechanism 5 are sequentially arranged in the operating platform 4.

As shown in fig. 3 and 4, a slide rail 9 is fixedly mounted on the upper surface of the mounting table 1 along the longitudinal direction of the rotary base 3, and the slide rail 9 gradually extends toward the operation table 4. The lower end of the supporting seat 2 is inserted into and slidably arranged on the slide rail 9, and the mounting table 1 is provided with a driving mechanism 10 for driving the supporting seat 2 to slide left and right along the length direction of the slide rail 9. The driving mechanism 10 comprises a motor 101 fixedly mounted on the mounting table 1, and the motor 101 is located on one side of the supporting seat 2, which is far away from the operating table 4. The driving mechanism 10 further includes a second lead screw 102 fixedly mounted on the output shaft of the motor 101, and the second lead screw 102 is disposed along the sliding direction of the supporting seat 2. One end of the second screw rod 102 far away from the motor 101 penetrates into the supporting seat 2 and is in threaded connection with the supporting seat 2. After the motor 101 is started, the second screw 102 can drive the support base 2 to slide left and right on the slide rail 9. An infrared sensor 11 is installed on the supporting seat 2 through a transmission line, and the infrared sensor 11 is located at the oblique lower part of the rotating seat 3. The infrared sensor 11 is electrically connected with the motor 101. When the infrared sensor 11 senses the mark preset on the packaging bag, the infrared sensor 11 transmits an electric signal to the motor 101, so that the motor 101 stops working, the rotating seat 3 can accurately move to the specified working position, and smooth operation of film feeding is guaranteed.

As shown in fig. 4, three slideways 31 are disposed on the rotating base 3 along the length direction of the rotating base 3, and the three slideways 31 are circumferentially and uniformly spaced around the rotating base 3. A tube taking plate 32 is arranged in the slide way 31 in a sliding manner along the horizontal direction, and one end of the tube taking plate 32 extends out of the slide way 31. All install in three slide 31 along getting the flexible reset spring 33 of bobbin plate 32 moving direction, reset spring 33 one end with get the lateral wall fixed connection that bobbin plate 32 deviates from operation panel 4, reset spring 33 other end and the slide 31 inside wall fixed connection that is close to supporting seat 2 one side. The rotating base 3 is further provided with a sliding chute 34 positioned between two adjacent sliding chutes 31, and the sliding chute 34 is arranged along the length direction of the sliding chute 31. The sliding groove 34 is rotatably provided with a first screw rod 36 arranged along the length direction of the sliding groove 34, and one end of the first screw rod 36 penetrates out of the outer side wall of one end of the rotating seat 3 close to the supporting seat 2. The first screw rod 36 is connected with a limiting block 35 in the sliding groove 34 through a thread, and the limiting block 35 is horizontally arranged in the sliding groove 34 in a sliding manner along the length direction of the first screw rod 36. The end of the limiting block 35 far away from the first lead screw 36 extends out of the opening of the sliding chute 34, and the extending part of the limiting block 35 is far smaller than the part of the tube taking plate 32 extending out of the slideway 31. As shown in fig. 2 and 3, an opening at one end of the operating platform 4 faces the front end of the rotating base 3, the upper drum mechanism 6 includes a second cylinder 61 fixedly mounted on the operating platform 4, and a piston rod of the second cylinder 61 is horizontally disposed and faces the opening center of the operating platform 4. The upper cylinder mechanism 6 further comprises a pushing cylinder pipe 62 fixedly mounted on a piston rod of the second cylinder 61, and the second cylinder 61 and the pushing cylinder pipe 62 are coaxially arranged. The opening of the push cylinder pipe 62 faces the front end of the rotating seat 3, and the opening diameter of the push cylinder pipe 62 is larger than the diameter of the rotating seat 3. A positioning rod 63 is further fixedly mounted in the bobbin 62, and the central axis of the positioning rod 63 overlaps the central axis of the piston rod of the second cylinder 61. The front end of the rotating seat 3 is provided with a yielding groove 64 facing the positioning rod 63, and the yielding groove 64 is used for inserting one end of the positioning rod 63 along the horizontal direction.

As shown in fig. 3 and 5, the tube conveying mechanism 8 is laid below the upper tube mechanism 6 along the horizontal direction, the tube conveying mechanism 8 includes four support rods 81 arranged along the upper tube direction perpendicular to the upper tube mechanism 6, and the support rods 81 are sequentially arranged at intervals along the direction gradually approaching the tube taking mechanism 5. The tube conveying mechanism 8 further comprises a roller 82 rotatably mounted on the support rod 81, and the roller 82 and the support rod 81 are coaxially arranged. The number of the rollers 82 on each support rod 81 is three, and the upper surfaces of the rollers 82 rotate along the extension direction of the piston rod of the second cylinder 61.

As shown in fig. 3 and 5, a tube feeding mechanism 7 located on one side of the upper tube mechanism 6 is further installed on the outer side wall of the operation table 4, the tube feeding mechanism 7 includes a tube feeding channel 71 inclined downward, and the lower end of the tube feeding channel 71 is communicated with the inside of the operation table 4 and located above the tube conveying mechanism 8. By sequentially and sequentially placing new film sleeves from the opening on the side of the feed passage 71 away from the operation table 4, the new film sleeves can be replenished into the operation table 4 by the feed mechanism 7. The lower side wall of the inner part of the tube feeding channel 71 is provided with a position withdrawing groove 74 close to one side of the upper tube mechanism 6, and the tube feeding mechanism 7 also comprises a partition plate 72 for separating the film sleeves. The partition plate 72 is arranged in the retreat groove 74 in a sliding manner along a direction perpendicular to the tube feeding channel 71, a third air cylinder 73 is further fixedly mounted on the outer side wall of the lower end of the tube feeding channel 71, and a piston rod of the third air cylinder 73 extends into the retreat groove 74 and is fixedly connected with the partition plate 72. The third cylinder 73 is used for driving the partition plate 72 to extend out or retract into the retreat groove 74, and when the upper end of the partition plate 72 extends out from the opening of the retreat groove 74 under the driving of the third cylinder 73, the partition plate 72 can block the rear film sleeve to prevent the film sleeve from entering the operating table 4.

As shown in fig. 3 and 6, the tube taking mechanism 5 is located at the opening of the operation platform 4 close to the rotating base 3, the tube taking mechanism 5 includes two tube taking members 51 which are vertically symmetrically arranged, and a socket for inserting the rotating base 3 is formed between the two tube taking members 51. A limiting plate 52 is formed at one end of the cylinder taking piece 51 close to the rotating seat 3, and the two limiting plates 52 are bent towards the direction of mutual approaching. The upper and lower outer side walls of the opening of the operation table 4 are fixedly provided with first air cylinders 41, and piston rods of the two first air cylinders 41 are inserted into the operation table 4 along the vertical direction and are fixedly connected with the respectively adjacent cylinder taking parts 51. The two cylinder members 51 are driven by the respective first cylinders 41 to move closer to or farther from each other in the vertical direction. When the cylinder taking plate 32 is inserted from the opening of the operation table 4 following the rotary base 3, the cylinder taking member 51 is driven by the first air cylinder 41 to gradually approach the cylinder taking plate 32. When the cylinder taking plates 32 are contacted with the cylinder taking parts 51 which are respectively opposite, the cylinder taking plates 32 can be limited in the operation table 4 through the limiting plates 52. As the rotating seat 3 gradually withdraws away from the tube taking mechanism 5, the tube taking plate 32 can take out the exhausted film sleeve from the front end of the rotating seat 3 at the limit of the limit plate 52.

As shown in fig. 2 and 3, a doffing channel 43 is further fixedly mounted on the operating table 4 and located between the bobbin taking mechanism 5 and the upper bobbin mechanism 6, and the doffing channel 43 is close to one side of the bobbin taking mechanism 5. The upper end of the doffing channel 43 is communicated with the inside of the operation table 4, and the lower end of the doffing channel 43 is provided with an outlet for discharging the film sleeve taken down by the take-out mechanism 5 from the inside of the operation table 4. The operation table 4 is also internally provided with a mounting cavity 42 positioned between the bobbin taking mechanism 5 and the bobbin loading mechanism 6, and the mounting cavity 42 is positioned above the bobbin dropping channel 43.

The specific working conditions of this embodiment are:

when the film sleeve on the rotary base 3 is used up, the supporting base 2 is pushed by the driving mechanism 10 to move towards the operation table 4. The rotating seat 3 inserts the used film sleeve from the opening of the tube taking mechanism 5, and when the tube taking plate 32 enters the tube taking mechanism 5 along with the rotating seat 3, the opening of the tube taking mechanism 5 contracts under the action of the first air cylinder 41. At this time, the opening of the tube taking mechanism 5 can clamp the tube taking plate 32, and then the driving mechanism 10 will drive the supporting seat 2 to move away from the opening of the tube taking mechanism 5. With the continuous retraction of the rotating seat 3, the tube taking plate 32 can push the exhausted film sleeve out of one end of the rotating seat 3 smoothly under the action of the tube taking mechanism 5. The pushed film sleeves fall into the doffing channel 43 and are sent out from the operation table 4 through the doffing channel 43, so that the used film sleeves are collected uniformly. When the film sleeve is taken out from the rotating seat 3, the opening of the tube taking mechanism 5 is reset, and at the moment, the tube taking plate 32 realizes rebound reset under the action of the reset spring 33. The driving mechanism 10 will then push the rotating seat 3 again to insert from the opening of the tube taking mechanism 5, and subsequently the upper tube mechanism 6 will push the new film sleeve to insert tightly on the rotating seat 3. When the new film sleeve is installed, the driving mechanism 10 drives the rotating seat 3 to withdraw from the opening of the tube taking mechanism 5. The automatic film sleeve replacement is realized, and the replacement efficiency is improved.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.