CN110124947B

CN110124947B - Glue dispensing device for polymer adhesive labels

Info

Publication number: CN110124947B
Application number: CN201910553815.5A
Authority: CN
Inventors: 黄裕银
Original assignee: Wuhu Xianghe Packaging Co ltd
Current assignee: Wuhu Xianghe Packaging Co ltd
Priority date: 2019-06-25
Filing date: 2019-06-25
Publication date: 2021-08-06
Anticipated expiration: 2039-06-25
Also published as: CN110124947A

Abstract

The invention discloses a glue dispensing device for a high-molecular adhesive label, which relates to the field of adhesive labels and comprises a main shaft, a rotary roller, a driving part, an adjusting part and an isolating part, wherein the main shaft rotates under the action of the driving part, an inner cavity is arranged in the main shaft, the opening of the inner cavity faces to one end surface of the main shaft, the rotary roller can rotate along with the main shaft, a plurality of outlet channels are distributed on the side surface development of the rotary roller in a rectangular array, an open slot is arranged between adjacent longitudinal outlet channels in the longitudinal direction, the isolating part is positioned in the open slot, the side wall of the inner cavity is communicated with the outlet channels through a plurality of guide channels, the guide channels are in one-to-one correspondence with the outlet channels, all the guide channels corresponding to each group of the outlet channels in the transverse direction are connected through the adjusting part, before glue dispensing is carried out on a label base material, the position of the label which does not need glue dispensing in the transverse direction and the longitudinal direction is determined according to the size of the label, and then the device is adjusted, the isolating belt between the labels in the label substrate can not be coated with the adhesive sticker, and the adhesive sticker is greatly saved.

Description

Glue dispensing device for polymer adhesive labels

Technical Field

The invention relates to the field of adhesive sticker, in particular to a glue dispensing device for a polymer adhesive sticker label.

Background

The self-adhesive label material is a composite material with film as facing material, adhesive coated on the back and silicon coated protecting paper as backing paper. In the production process of the self-adhesive label, self-adhesive glue is coated on a label substrate and then is combined with a bottom substrate for people to use.

The applicant found that: when the adhesive sticker is coated on the label, the adhesive sticker is coated on the whole label base material, and in practical application, the isolation belt between the label and the label in the label base material is not used, so that the waste of the adhesive sticker is caused after the adhesive sticker is coated.

Disclosure of Invention

In view of the above, the present invention provides a dispensing device for a polymer adhesive label, so as to solve the technical problem in the prior art that when an adhesive is applied to a label, the adhesive is applied to the whole label substrate, and in practical applications, an isolation strip between the label and the label in the label substrate is not used, such that the adhesive is wasted after the adhesive is applied.

Based on the above purpose, the invention provides a glue dispensing device for a high molecular self-adhesive label, comprising a main shaft, a rotary roller, a driving part, an adjusting part and an isolating part, wherein the main shaft rotates under the action of the driving part, an inner cavity is arranged in the main shaft, the opening of the inner cavity faces to one end surface of the main shaft, the rotary roller can rotate along with the main shaft, a plurality of outlet channels are distributed on the side surface development of the rotary roller in a rectangular array, an open slot is arranged between every two adjacent groups of outlet channels in the longitudinal direction, the isolating part is positioned in the open slot, the side wall of the inner cavity is communicated with the outlet channels through a plurality of guide channels, the guide channels correspond to the outlet channels one by one, all the guide channels corresponding to each group of the outlet channels in the transverse direction are connected through the adjusting part, before glue dispensing is carried out on a label base material, the, and then all the outlet channels in the longitudinal direction corresponding to the isolating part are sealed by the corresponding isolating part, and all the outlet channels in the transverse direction corresponding to the adjusting part are sealed by the corresponding adjusting part.

Furthermore, the driving part comprises a support and a motor, the main shaft is rotatably arranged on the support, and the motor is in power connection with the main shaft.

Further, including the connecting block, the axis position of main shaft is located to the inner chamber, and the inner chamber is close to the open-ended lateral wall and is equipped with the spacing groove, the inner chamber is located in the connecting block rotation, and its one end is rotated with the spacing groove and is connected, and its other end is located the outside of inner chamber, the axis position of connecting block is equipped with interface channel, and after lieing in the outside one end of inner chamber and the pipe connection of carrying the non-setting adhesive, the non-setting adhesive enters the inner chamber through interface channel.

Further, including the division board, the isolated part includes first magnet and dog, the division board can insert in the open slot, be equipped with in a lateral wall of open slot first magnet, the dog is located first magnet just right position, and the dog runs through the lateral wall of open slot to partly extend to exit channel, the exit channel lateral wall is equipped with the stable groove relative with the dog, and when the exit channel that corresponds was opened to needs, the dog was opened exit channel under the suction effect of first magnet, when needs seal the exit channel who corresponds, will the division board insert in the open slot, the division board can make dog and first magnet force the separation, and makes the one end and the stable groove coincidence of dog.

Further, the division board is ring shape, and it includes baffle, lower baffle, reference column and second magnet, go up the baffle and be the semicircle ring with lower baffle, go up the baffle two tip with reference column fixed connection, two tip insides of lower baffle are equipped with the constant head tank corresponding with the reference column, the bottom of constant head tank is equipped with second magnet, when last baffle and lower baffle complex, reference column and constant head tank coincidence, and under the suction effect of second magnet, go up baffle and lower baffle zonulae occludens.

Furthermore, the inner rings of the upper partition plate and the lower partition plate are respectively provided with an inclined surface, and when the upper partition plate and the lower partition plate are inserted into the corresponding open grooves, the side surfaces with the inclined surfaces face the stop blocks.

Furthermore, the back of the inclined plane of the upper partition plate and the back of the inclined plane of the lower partition plate are both provided with guide grooves, and the side wall where the first magnet is located in the open slot is provided with a guide block which is connected with the guide grooves in a sliding mode.

Furthermore, the outer side surfaces of the upper partition plate and the lower partition plate are provided with pull holes.

Furthermore, the adjusting part comprises an adjusting rod and a through hole, a plurality of connecting plates are arranged on the side surface of the main shaft, the connecting plates correspond to the transverse outlet channels one by one, an axial line hole matched with the main shaft is arranged at the central axis of the rotary roller, the side wall of the axial hole is provided with a connecting groove corresponding to the connecting plate, the top of the connecting groove is tightly connected with the top of the connecting plate, so that the guide channel is communicated with the outlet channel, the inside of the connecting plate is provided with an adjusting groove which just connects all the guide channels in the connecting plate, the adjusting rod is connected with the adjusting groove in a sliding way, the rod body of the adjusting rod is provided with the through holes which are in one-to-one correspondence with the guide channels, the adjusting rod is driven to move by external force, when the through hole is opposite to the guide channel, the guide channel is communicated, and when the through hole is contracted in the adjusting groove, the guide channel is closed.

Further, including fixed block, push pedal, turning block, T shape end and stopper, the adjustment tank is run through to the one end of adjusting the pole to extend to the outside of adjustment tank, the fixed block is fixed in the opening part of adjustment tank, adjust the round hole sliding connection in pole and the fixed block, the lateral wall of fixed block is equipped with the sliding tray that is linked together with the round hole, turning block and fixed block threaded connection, the sliding tray is passed to the one end of push pedal to with adjust pole fixed connection, the push pedal towards the side of turning block with the tip fixed connection of T shape end, the terminal surface of turning block is equipped with the T-shaped groove of being connected with T shape end rotation, the left and right sides of turning block all be equipped with the stopper, the stopper is fixed in the side of fixed block.

The invention has the beneficial effects that: by adopting the glue dispensing device for the high-molecular adhesive sticker label, before glue dispensing is carried out on the label base material, the transverse and longitudinal glue dispensing-free positions of the label are determined according to the size of the label, then in the device, all the longitudinal outlet channels corresponding to the isolation parts are closed through the corresponding isolation parts, all the transverse outlet channels corresponding to the adjustment parts are closed through the corresponding adjustment parts, after adjustment is finished, when the label base material is coated, the adhesive sticker cannot be coated on the isolation belt between the label and the label in the label base material, and the adhesive sticker is greatly saved.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a side expanded view of a turning roll in an embodiment of the present invention;

FIG. 3 is a side view of a turning roll in an embodiment of the present invention;

FIG. 4 is a front partial cross-sectional view of a turning roll in an embodiment of an example of the invention;

FIG. 5 is an enlarged view taken at A in FIG. 4;

FIG. 6 is an enlarged view of a connection block in an embodiment of the present invention;

FIG. 7 is an enlarged view of a separator plate in an embodiment of the invention.

Wherein, 1-pillar, 2-motor, 3-main shaft, 4-roller, 5-inner chamber, 6-guide channel, 7-connecting block, 8-outlet channel, 9-open slot, 10-adjusting slot, 11-connecting plate, 12-connecting slot, 13-adjusting rod, 14-through hole, 15-stop block, 16-first magnet, 17-stabilizing slot, 18-guide block, 19-isolation plate, 20-guide slot, 21-fixing block, 22-sliding slot, 23-push plate, 24-rotating block, 25-T-shaped end, 26-annular slot, 27-limit block, 28-limit slot, 29-connecting channel, 30-upper baffle, 31-lower baffle, 32-positioning column, 33-positioning slot, 29-positioning slot, 34-second magnet, 35-broaching hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings.

In view of the above, the first aspect of the present invention provides an embodiment of a dispensing device for a high molecular adhesive label, as shown in fig. 1, the dispensing device comprises a main shaft 3, a rotating roller 4, a driving portion, an adjusting portion and an isolating portion, the main shaft 3 rotates under the action of the driving portion, an inner cavity 5 is arranged in the main shaft 3, an opening of the inner cavity 5 faces one end surface of the main shaft 3, the rotating roller 4 can rotate along with the main shaft 3, a plurality of outlet channels 8 are distributed on a side expansion view of the rotating roller 4 in a rectangular array, an open slot 9 is arranged between each group of adjacent outlet channels 8 in the longitudinal direction, the isolating portion is located in the open slot 9, the side wall of the inner cavity 5 is communicated with the outlet channels 8 through a plurality of guide channels 6, the guide channels 6 are in one-to-one correspondence with the outlet channels 8, all the guide channels 6 corresponding to the outlet channels 8 in the transverse direction are, before the label base material is subjected to glue dispensing, the transverse and longitudinal positions of the label which do not need to be subjected to glue dispensing are determined according to the size of the label, all the longitudinal outlet channels 8 corresponding to the isolating parts are sealed through the corresponding isolating parts, all the transverse outlet channels 8 corresponding to the adjusting parts are sealed through the corresponding adjusting parts, after the adjustment is completed, when the label base material is coated, the isolating belt between the label and the label in the label base material cannot be coated with non-setting adhesive, and the non-setting adhesive is greatly saved.

In this embodiment, the drive division includes pillar 1 and motor 2, main shaft 3 rotates and locates pillar 1, motor 2 and main shaft 3 power connection, and after the adjustment was accomplished, motor 2 drove main shaft 3 and rotates on pillar 1, and the non-setting adhesive advances guide way 6 from inner chamber 5, is contacting with the label substrate from exit channel 8, in this device after adjusting according to the label size, in confined exit channel 8, can not have the non-setting adhesive to pass through.

In the above embodiment, as shown in fig. 6, the pressure-sensitive adhesive tape includes a connecting block 7, the inner cavity 5 is disposed at a central axis position of the spindle 3, a limiting groove 28 is disposed on a side wall of the inner cavity 5 close to the opening, the connecting block 7 is rotatably disposed in the inner cavity 5, one end of the connecting block is rotatably connected with the limiting groove 28, the other end of the connecting block is located outside the inner cavity 5, a connecting channel 29 is disposed at the central axis position of the connecting block 7, and after one end of the connecting block located outside the inner cavity 5 is connected with a pipeline for conveying pressure-sensitive adhesive tape, the pressure-sensitive adhesive tape enters the inner cavity 5 through the connecting channel 29.

In this embodiment, since the inner cavity 5 is located at the central axis of the spindle 3, when the spindle 3 rotates, the connecting block 7 remains stationary relative to the pipeline for conveying the non-setting adhesive, and the connecting block 7 rotates relative to the spindle 3 in the limiting groove 28, so that the non-setting adhesive is stably conveyed.

As another embodiment of the present invention, in the above-mentioned embodiment, the partition plate 19 is included, the partition portion includes the first magnet 16 and the stopper 15 as shown in fig. 4, the partition plate 19 is insertable into the open groove 9, the first magnet 16 is arranged in one side wall of the open slot 9, the stop block 15 is positioned at the position opposite to the first magnet 16, the stop block 15 penetrates through the side wall of the open slot 9, and a part extends to the outlet channel 8, the side wall of the outlet channel 8 is provided with a stabilizing slot 17 opposite to the stop 15, when the corresponding outlet channel 8 needs to be opened, the stop 15 opens the outlet channel 8 under the action of the attraction force of the first magnet 16, when the corresponding outlet channel 8 needs to be closed, the separation plate 19 is inserted into the open slot 9, the spacer 19 allows the stopper 15 to be forcibly separated from the first magnet 16, and one end of the stopper 15 to be overlapped with the stabilizing groove 17.

In this embodiment, if the partition is to separate the corresponding outlet channel 8, the stopper 15 is forcibly separated from the first magnet 16 by the partition plate 19, and here, the partition plate 19 is inserted into one of the open grooves 9, so that all the stoppers 15 in a group of longitudinal outlet channels 8 can be separated from the corresponding first magnet 16, thereby completely closing the group of longitudinal outlet channels 8.

In the above embodiment, as shown in fig. 7, the partition board 19 is a circular ring shape, and includes an upper partition board 30, a lower partition board 31, a positioning column 32 and a second magnet 34, the upper partition board 30 and the lower partition board 31 are semicircular rings, two end portions of the upper partition board 30 are fixedly connected with the positioning column 32, positioning grooves 33 corresponding to the positioning column 32 are disposed inside two end portions of the lower partition board 31, the second magnet 34 is disposed at the bottom of the positioning grooves 33, when the upper partition board 30 and the lower partition board 31 are combined, the positioning column 32 overlaps with the positioning groove 33, and under the suction force of the second magnet 34, the upper partition board 30 is tightly connected with the lower partition board 31.

Since the rotating roller 4 is cylindrical, in the embodiment, in order to realize that the partition plate 19 is inserted into the open slot 9 to close the corresponding set of longitudinal outlet channels 8, the partition plate 19 is divided into the upper partition plate 30 and the lower partition plate 31, and the radius of the outer side surface of the partition plate 19 is equal to the radius of the rotating roller 4, when the upper partition plate 30 is combined with the lower partition plate 31, the positioning column 32 is overlapped with the positioning slot 33, in the overlapping process, the inner rings of the upper partition plate 30 and the lower partition plate 31 forcibly separate all the stoppers 15 in the set of longitudinal outlet channels 8 from the corresponding first magnet 16, and under the suction force of the second magnet 34, the upper partition plate 30 is tightly connected with the lower partition plate 31, so as to ensure that the partition plate 19 partially falls from the open slot 9.

In the above embodiment, as shown in fig. 7, the inner rings of the upper and

lower partition plates

30 and 31 are provided with the inclined surfaces, and when the upper and

lower partition plates

30 and 31 are inserted into the corresponding open grooves 9, the side surfaces having the inclined surfaces face the stoppers 15, so that it is easier to separate the stoppers 15 and the first magnets 16 by the inclined surfaces.

In the above embodiment, as shown in fig. 4, the guide grooves 20 are respectively disposed on the back of the inclined surface of the upper partition plate 30 and the back of the inclined surface of the lower partition plate 31, the side wall where the first magnet 16 is located in the opening groove 9 is provided with the guide block 18 slidably connected with the guide grooves 20, and when the upper partition plate 30 and the lower partition plate 31 are inserted into the opening groove 9 to be overlapped, the guide block 18 and the corresponding guide groove 20 are overlapped first, so that the positioning column 32 can be quickly aligned with the positioning groove 33, and the upper partition plate 30 and the lower partition plate 31 can be overlapped conveniently.

In the above embodiment, as shown in fig. 7, the outer side surfaces of the upper partition plate 30 and the lower partition plate 31 are provided with the pull holes 35, and when readjustment is needed, the pull rope can be passed through the pull holes 35, and the pull rope is pulled by external force to separate the upper partition plate 30 from the lower partition plate 31.

As another embodiment of the present invention, in any of the above embodiments, as shown in fig. 3, the adjusting portion includes an adjusting rod 13 and a through hole 14, the side surface of the main shaft 3 is provided with a plurality of connecting plates 11, the connecting plates 11 correspond to the transverse outlet channels 8 one by one, the central axis of the rotating roller 4 is provided with an axis hole matched with the main shaft 3, the side wall of the axis hole is provided with a connecting groove 12 corresponding to the connecting plate 11, the top of the connecting groove 12 is tightly connected with the top of the connecting plate 11, so that the guide channels 6 are communicated with the outlet channels 8, the connecting plate 11 is internally provided with an adjusting groove 10, the adjusting groove 10 just connects all the guide channels 6 located in the connecting plate 11, the adjusting rod 13 is slidably connected with the adjusting groove 10, the rod body of the adjusting rod 13 is provided with the through hole 14 corresponding to the guide channels 6 one by one, the adjusting rod 13 is actuated by an external force, when the through hole 14 is opposite to the guide channel 6, the guide channel 6 is communicated, and when the through hole 14 is contracted in the adjusting groove 10, the guide channel 6 is closed.

In the above embodiment, as shown in fig. 5, it includes a fixed block 21, a push plate 23, a rotation block 24, a T-shaped end 25 and a limit block 27, one end of the adjusting lever 13 penetrates through the adjusting slot 10, and extends to the outside of the adjusting groove 10, the fixing block 21 is fixed at the opening of the adjusting groove 10, the adjusting rod 13 is connected with a round hole in a fixed block 21 in a sliding way, the side wall of the fixed block 21 is provided with a sliding groove 22 communicated with the round hole, the rotating block 24 is in threaded connection with the fixed block 21, one end of the push plate 23 passes through the sliding groove 22, and is fixedly connected with the adjusting rod 13, the side surface of the push plate 23 facing to the rotating block 24 is fixedly connected with the end part of the T-shaped end 25, the terminal surface of turning block 24 is equipped with the T-slot 26 of rotating the connection with T shape end 25, the left and right sides of turning block 24 all is equipped with stopper 27, stopper 27 is fixed in the side of fixed block 21.

Here, the rotating block 24 is rotated to drive the pushing plate 23 to move in the sliding groove 22, and further drive the adjusting rod 13 to move in the adjusting groove 10, when the rotating block 24 contacts with the left limiting block 27, at this time, the outlet channel 8 coincides with the guide channel 6 through the through hole 14, the set of transverse outlet channels 8 will not be closed, if the pushing plate 23 contacts with the right limiting block 27, at this time, the outlet channel 8 is separated from the guide channel 6 by the adjusting rod 13, and the set of transverse outlet channels 8 will be completely closed.

Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the invention, also technical features in the above embodiments or in different embodiments may be combined and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, substitutions, improvements and the like that may be made without departing from the spirit and principles of the invention are intended to be included within the scope of the invention.

Claims

1. The utility model provides a polymer is adhesive deposite device for non-setting adhesive label which characterized in that: including main shaft (3), commentaries on classics roller (4), drive division, regulation part and isolation part, main shaft (3) are in rotate under the effect of drive division, are equipped with inner chamber (5) in main shaft (3), the opening of inner chamber (5) is towards a terminal surface of main shaft (3), it can follow main shaft (3) and rotate to change roller (4), and the side expansion picture of changeing roller (4) is that the rectangle array distributes and has a plurality of exit passage (8), and is equipped with open slot (9) between every group exit passage (8) adjacent on vertical, isolation part is located open slot (9), the lateral wall of inner chamber (5) is linked together with exit passage (8) through a plurality of direction passageway (6), direction passageway (6) and exit passage (8) one-to-one, all direction passageway (6) that every group exit passage (8) correspond on with horizontal pass through regulation part connect, before dispensing the label base material, firstly determining the positions of the label which do not need dispensing in the transverse direction and the longitudinal direction according to the size of the label, then closing all the outlet channels (8) in the longitudinal direction corresponding to the separating part through the corresponding separating part, and closing all the outlet channels (8) in the transverse direction corresponding to the regulating part through the corresponding regulating part;

including division board (19), the isolated part includes first magnet (16) and dog (15), division board (19) can insert in open slot (9), be equipped with in a lateral wall of open slot (9) first magnet (16), dog (15) are located first magnet (16) just right position, and dog (15) run through the lateral wall of open slot (9) to partly extend to exit channel (8), exit channel (8) lateral wall is equipped with and stabilizes groove (17) relative with dog (15), when needing to open corresponding exit channel (8), dog (15) are under the suction effect of first magnet (16), open exit channel (8), when needing to seal corresponding exit channel (8), will division board (19) insert in open slot (9), division board (19) can make dog (15) and first magnet (16) force the separation, and one end of the stopper (15) is overlapped with the stabilizing groove (17).

2. The dispensing device for the polymer self-adhesive label according to claim 1, wherein: the drive part comprises a support column (1) and a motor (2), the main shaft (3) is rotatably arranged on the support column (1), and the motor (2) is in power connection with the main shaft (3).

3. The dispensing device for the polymer self-adhesive label according to claim 2, wherein: including connecting block (7), the axis position of main shaft (3) is located in inner chamber (5), and inner chamber (5) are close to the open-ended lateral wall and are equipped with spacing groove (28), inner chamber (5) are located in connecting block (7) rotation, and its one end rotates with spacing groove (28) to be connected, and its other end is located the outside of inner chamber (5), the axis position of connecting block (7) is equipped with interface channel (29), and after being located the outside one end of inner chamber (5) and the pipe connection of carrying the non-setting adhesive, the non-setting adhesive passes through interface channel (29) and gets into in inner chamber (5).

4. The dispensing device for the polymer self-adhesive label according to claim 1, wherein: division board (19) are the ring shape, and it includes baffle (30), baffle (31), reference column (32) and second magnet (34) down, go up baffle (30) and baffle (31) down and be the semicircle ring, go up two tip of baffle (30) with reference column (32) fixed connection, two tip inside of baffle (31) down be equipped with reference column (32) corresponding constant head tank (33), the bottom of constant head tank (33) is equipped with second magnet (34), when last baffle (30) and baffle (31) combination down, reference column (32) and constant head tank (33) coincidence, and under the suction effect of second magnet (34), go up baffle (30) and baffle (31) zonulae occludens down.

5. The dispensing device for the polymer self-adhesive label according to claim 4, wherein: the inner rings of the upper partition plate (30) and the lower partition plate (31) are respectively provided with an inclined surface, and when the upper partition plate (30) and the lower partition plate (31) are inserted into the corresponding opening grooves (9), the side surfaces with the inclined surfaces face the stop blocks (15).

6. The dispensing device for the polymer self-adhesive label according to claim 5, wherein: the inclined plane back of going up baffle (30) and the inclined plane back of lower baffle (31) all are equipped with guide way (20), be equipped with on the lateral wall at first magnet (16) place in open slot (9) with guide way (20) sliding connection's guide block (18).

7. The dispensing device for the polymer self-adhesive label according to claim 5, wherein: the outer side surfaces of the upper partition plate (30) and the lower partition plate (31) are respectively provided with a pull hole (35).

8. The dispensing device for the polymer self-adhesive label according to claim 1, wherein: the adjusting part comprises adjusting rods (13) and through holes (14), a plurality of connecting plates (11) are arranged on the side surface of the main shaft (3), the connecting plates (11) correspond to the transverse outlet channels (8) one by one, an axis hole matched with the main shaft (3) is arranged at the axis position of the rotating roller (4), a connecting groove (12) corresponding to the connecting plates (11) is arranged on the side wall of the axis hole, the top of the connecting groove (12) is tightly connected with the top of the connecting plates (11), so that the guide channels (6) are communicated with the outlet channels (8), an adjusting groove (10) is arranged inside the connecting plates (11), the adjusting groove (10) just connects all guide channels (6) positioned in the connecting plates (11), the adjusting rods (13) are connected with the adjusting groove (10) in a sliding manner, the through holes (14) corresponding to the guide channels (6) one by one are arranged on the rod body of the adjusting rods (13), the adjusting rod (13) is driven to move by external force, when the through hole (14) is opposite to the guide channel (6), the guide channel (6) is communicated, and when the through hole (14) is contracted in the adjusting groove (10), the guide channel (6) is closed.

9. The dispensing device for polymer self-adhesive labels as claimed in claim 8, wherein: comprises a fixed block (21), a push plate (23), a rotating block (24), a T-shaped end (25) and a limiting block (27), wherein one end of an adjusting rod (13) penetrates through an adjusting groove (10) and extends to the outside of the adjusting groove (10), the fixed block (21) is fixed at an opening of the adjusting groove (10), the adjusting rod (13) is in sliding connection with a round hole in the fixed block (21), a sliding groove (22) communicated with the round hole is formed in the side wall of the fixed block (21), the rotating block (24) is in threaded connection with the fixed block (21), one end of the push plate (23) penetrates through the sliding groove (22) and is fixedly connected with the adjusting rod (13), the side surface of the push plate (23) facing the rotating block (24) is fixedly connected with the end part of the T-shaped end (25), a T-shaped groove (26) rotatably connected with the T-shaped end (25) is formed in the end surface of the rotating, the left side and the right side of the rotating block (24) are provided with the limiting blocks (27), and the limiting blocks (27) are fixed on the side faces of the fixing blocks (21).