CN211808087U

CN211808087U - Large-scale gluing machine

Info

Publication number: CN211808087U
Application number: CN201922205747.1U
Authority: CN
Inventors: 龙灿
Original assignee: Shanghai Huahua Packaging Color Printing Co ltd
Current assignee: Shanghai Huahua Packaging Color Printing Co ltd
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2020-10-30
Anticipated expiration: 2029-12-04

Abstract

The utility model relates to a large-scale gluing machine, which comprises a paper feeding machine head, wherein a paper feeding plate is arranged on the paper feeding machine head, a paper plate limiting mechanism opposite to the paper feeding plate is arranged in the direction of the paper feeding machine head, which is positioned at the advancing direction of the paper plate, and a conveying mechanism is arranged below the paper plate limiting mechanism; a fixed seat is arranged on one side of the paper feeding machine head; the upper end of the fixed seat is provided with a supporting frame; the upper end of the supporting frame is fixedly connected with the lower end face of the paper feeding plate; a paper feeding mechanism is arranged below the conveying mechanism; one side of the paper feeding machine head, which is close to the paper feeding plate, is provided with an adjusting mechanism for adjusting the position of the paper feeding plate. The utility model discloses have and make the cardboard can be smoothly sent out, improve work efficiency's effect.

Description

Large-scale gluing machine

Technical Field

The utility model belongs to the technical field of the technique of carton packing and specifically relates to a large-scale gluing machine is related to.

Background

A large-scale gluing machine is mechanical equipment used for gluing folding cartons in carton factories, and is divided into a folding type and a downward folding type. The large-scale gluing machine generally comprises a paper feeding part, a deviation rectifying part, a crease line shaping part, a gluing part, a folding part and a counting and discharging part. The carton gluer in the general sense means a device in which the whole carton forming process of the paperboard is completed mechanically, and does not include a simple gluing device which is folded and corrected by manpower. The front end of the box gluing machine can be connected with an up-printing type or down-printing type watermark slotting die-cutting machine, and the rear end of the box gluing machine can be connected with a full-automatic bundler and a full-automatic stacker crane, so that the production line of the corrugated case is streamlined, the production efficiency is greatly improved, and the production cost is reduced.

When gluing the case, need put the corrugated paper earlier on the feeder plate of gluing punch-out equipment aircraft nose department, the cardboard of bottommost can drop on the conveying belt of feeder plate below, carry forward the cardboard of bottommost and get into paper folding portion and fold, but folding corrugated paper size of a dimension is different, and current feeder plate is fixed usually on the aircraft nose, when carrying out the paper feeding, especially some great cardboards of width, the cardboard very easily blocks on the feeder plate, can't fall on the feeder conveying belt, and influence automatic work efficiency who glues the punch-out equipment.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a large-scale gluing machine to prior art exists for the cardboard can be sent out smoothly, improves work efficiency.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a large gluing machine comprises a paper feeding machine head, wherein a paper feeding plate is arranged on the paper feeding machine head, a paperboard limiting mechanism opposite to the paper feeding plate is arranged on the paper feeding machine head in the advancing direction of the paperboard, and a conveying mechanism is arranged below the paperboard limiting mechanism; a fixed seat is arranged on one side of the paper feeding machine head; the upper end of the fixed seat is provided with a supporting frame; the upper end of the supporting frame is fixedly connected with the lower end face of the paper feeding plate; a paper feeding mechanism is arranged below the conveying mechanism; and one side of the paper feeding machine head, which is close to the paper feeding plate, is provided with an adjusting mechanism for adjusting the position of the paper feeding plate.

Through adopting above-mentioned technical scheme, the cardboard stacks on the cardboard, and transport mechanism through the bottom transmits the cardboard of bottommost, at the in-process of transmission, sets up paper feeding mechanism, can contact with the cardboard of bottommost, guarantees the conveying to the cardboard for the cardboard is difficult for blocking. Through setting up adjustment mechanism, can place the cardboard of equidimension not for transport mechanism and paper feeding mechanism top are fallen easily to the cardboard, avoid the cardboard card in transport mechanism's top and can not process.

The utility model is further arranged in that the transmission mechanism comprises a transmission roller which is rotatably arranged on the paper feeding machine head, a fixed frame which is fixed on the paper feeding machine head and is arranged at an interval with the transmission roller, a driven wheel which is rotatably arranged on one side of the fixed frame, which is far away from the transmission roller, a transmission belt which is sleeved on the transmission roller and the driven wheel, and a transmission motor which is fixedly arranged on the paper feeding machine head; the length direction of the driving roller is perpendicular to the advancing direction of the paper board; the length direction of the fixed frame is consistent with that of the driving roller; the driven wheel is rotatably arranged on one side of the fixing frame, which is far away from the transmission roller, and the axis of the driven wheel is parallel to the axis of the transmission roller; the conveying belt is sleeved on the outer surfaces of the transmission roller and the driven wheel; the conveying motor is arranged in the paper feeding machine head, and an output shaft of the conveying motor is connected with the driving roller.

Through adopting above-mentioned technical scheme, start the conveying motor, drive the driving roller and rotate for pass through the driven wheel that the hold-in range is connected with the driving roller and also rotate thereupon, thereby make the cardboard that drops on the conveyer belt can be conveyed and process in next process.

The utility model is further arranged in that the paper feeding mechanism comprises a mounting plate which is fixedly arranged on the lower end surface of the fixed frame and extends towards the lower part of the driving roller, a paper feeding motor which is arranged on one side of the mounting plate, a driving rod which is fixedly connected with an output shaft of the paper feeding motor, an eccentric wheel which is fixed with the end part of the driving rod, a mounting seat which is coated on the circumference of the eccentric wheel, an arc-shaped rod which is arranged on the upper end of the mounting seat, a movable frame which is arranged on the lower end of the; the upper end surface of the arc-shaped rod is provided with a plurality of bulges; the lower end of the movable frame is provided with a U-shaped notch matched with the limiting column; the diameter of the limiting column is smaller than the depth of the U-shaped groove in the vertical direction.

By adopting the technical scheme, the paper feeding motor is started, the driving rod connected with the output shaft of the paper feeding motor rotates, the driving rod penetrates through the eccentric point of the eccentric wheel, the bottom of the movable frame is in sliding fit with the limiting column, the movable frame can only do irregular motion along the limiting column, the motion track of the eccentric wheel is changed into an eccentric circle, so that the highest point of the arc-shaped rod moves up and down, the arc-shaped rod intermittently contacts with the bottommost paperboard, the upper end of the arc-shaped rod is provided with the bulge, the friction force between the arc-shaped rod and the bottommost paperboard is increased, and the arc-shaped rod can drive the paperboard to move in the advancing direction when moving.

The utility model is further provided with that the supporting frame comprises a bracket arranged on the fixed seat, a fixed rod fixed on the bracket and a fixed head hinged at the upper end of the fixed rod; the bracket is vertically arranged and is provided with a vertical waist-shaped hole; the fixed head is fixed on the paper feeding plate.

By adopting the technical scheme, the support frame is arranged into a structure combining the support frame and the fixed rod, so that the height of the support frame can be changed, and the support frame can adapt to paperboards with different thicknesses; the inclination angle of the paper feeding plate can be adjusted, so that paper feeding is more convenient to place, the paper feeding is smoother, and the paper feeding plate can adapt to different use occasions. The whole height of the support frame can be adjusted only by fixing the fixing rods on different positions of the support frame.

The utility model is further arranged in that the cardboard limiting mechanism comprises a mounting rack which is fixed on the paper feeding machine head and is positioned above the driving roller, a fixed sleeve which is sleeved on the mounting rack, a thread post which is vertically arranged above the fixed sleeve, an adjusting seat which is sleeved on the thread post, adjusting nuts which are in threaded connection on the thread post and are respectively positioned at the upper end and the lower end of the adjusting seat, and a limiting frame which is arranged on the adjusting seat and is close to one side of the paper feeding plate; the limiting frame is vertically arranged, and the bottom of the limiting frame and the upper portion of the conveying belt are arranged at intervals.

Through adopting above-mentioned technical scheme, set up cardboard stop gear, can carry on spacingly to the cardboard for the cardboard can stably pile up between sheet feeding board and cardboard stop gear, and guarantee at every turn that only can a cardboard can be conveyed next process, make the processing to the cardboard well in order, and set up the screw thread post, can adjust the extreme lower position of spacing to the cardboard of different thickness, make things convenient for the cardboard to pass through, make the material loading process more smooth and easy.

The utility model is further arranged in that a baffle arranged in parallel with the driving roller is arranged on the paper feeding machine head; one side of the baffle close to the paper feeding plate is abutted with the position of the limiting frame close to the lower end; the lower end face of the baffle is arranged at intervals with the conveying belt.

Through adopting above-mentioned technical scheme, set up the baffle, can improve and support the support of spacing bottom and lean on for overall structure is more stable.

The utility model is further arranged in that the adjusting mechanism comprises an adjusting cylinder arranged on one side of the paper feeding machine head and a connecting rod arranged at the end part of the piston rod of the adjusting cylinder; one side of the fixed seat close to the paper feeding machine head is fixedly connected with the end part of the connecting rod.

Through adopting above-mentioned technical scheme, set up adjustment mechanism, conveniently adjust the position of feed board, make the distance between feed board and the spacing subassembly of cardboard change, satisfy the cardboard processing requirement of different width, make the cardboard can smoothly remove along the feed board, guarantee smooth and easy feed.

The utility model is further arranged in that the adjusting mechanism also comprises a slide seat arranged on one side of the paper feeding machine head; the upper end surface of the sliding seat is provided with a guide groove; the guide groove is arranged along the length direction of the sliding seat; the lower terminal surface of fixing base is equipped with the slider that the guide way was located in the slip.

Through adopting above-mentioned technical scheme, set up guide way and slider for the fixing base can only be linear motion along the guide way under adjust cylinder's effect, guarantees the accurate nature of regulation of cardboard, makes the removal that the cardboard can be smooth and easy.

The utility model discloses further set up to, protruding material that adopts the rubber material.

Through adopting above-mentioned technical scheme, be the rubber material with protruding setting for the frictional force of arch and cardboard bottom is bigger, and is difficult for making cardboard bottom take place wearing and tearing.

To sum up, the utility model discloses a beneficial technological effect does:

1. the paper feeding mechanism and the adjusting mechanism are arranged, so that paper boards with different sizes can be placed, the paper boards can easily fall above the conveying mechanism and the paper feeding mechanism, and the situation that the paper boards are clamped above the conveying mechanism and cannot be processed is avoided;

2. the adjustable support frame is arranged, so that the inclination angle of the paper feeding plate can be adjusted, the paper feeding and placing are more convenient, the paper feeding is smoother, and the paper feeding plate can adapt to different use occasions;

3. set up cardboard stop gear, can carry on spacingly to the cardboard for the cardboard can stably pile up between paper feeding board and cardboard stop gear, and guarantee to have a cardboard can be conveyed next process at every turn, makes the processing to the cardboard well in order.

Drawings

FIG. 1 is a schematic view of the overall structure of the embodiment;

FIG. 2 is a schematic view of an installation structure of a paper feeding plate and a supporting frame of the embodiment;

FIG. 3 is an enlarged schematic view of A of FIG. 1;

FIG. 4 is a schematic diagram of a paper feeding mechanism according to an embodiment.

Reference numerals: 1. a paper feeding head; 2. a sheet feeding plate; 21. a first panel; 22. a second panel; 3. a paperboard limiting mechanism; 31. a mounting frame; 32. fixing a sleeve; 33. a threaded post; 34. an adjusting seat; 35. adjusting the nut; 36. a limiting frame; 37. a baffle plate; 4. a transport mechanism; 41. a driving roller; 42. a fixed mount; 43. a driven wheel; 44. a conveyor belt; 45. a transfer motor; 5. a paper feeding mechanism; 51. mounting a plate; 52. a paper feed motor; 53. a drive rod; 54. an eccentric wheel; 55. a mounting seat; 56. an arcuate bar; 561. a protrusion; 57. a movable frame; 571. a U-shaped notch; 58. a limiting column; 6. a fixed seat; 61. a support frame; 611. a support; 6111. a kidney-shaped hole; 612. fixing the rod; 613. a fixed head; 62. a slider; 7. an adjustment mechanism; 71. a slide base; 711. a guide groove; 72. an adjusting cylinder; 73. a connecting rod.

Detailed Description

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

Referring to fig. 1, for the utility model discloses a large-scale gluing machine, including paper feeding aircraft nose 1, be provided with paper feeding plate 2 on the paper feeding aircraft nose 1 for bear the weight of the cardboard, make things convenient for automatic feed. The paper feeding machine head 1 is also provided with a paperboard limiting mechanism 3 and a conveying mechanism 4. The feeder head 1 is located at the feed end of the cardboard. The cardboard stop gear 3 is corresponding with the cardboard 2 that supplies, and the cardboard that will pile up is placed on cardboard stop gear 3 and the cardboard 2 that supplies. The lower part of the paper feeder head 1 is provided with a paper feeding mechanism 5 for receiving and conveying the paper sheets.

The sheet feeding plate 2 includes a first panel 21 and a second panel 22. The first panel 21 is horizontally disposed, the second panel 22 is formed on one side of the first panel 21 close to the feeder head 1, and the second panel 22 is obliquely disposed from bottom to top in a direction close to the first panel 21.

Referring to fig. 2, a horizontally disposed fixing base 6 is fixedly installed at one side of the paper feeding head 1. The upper end fixed mounting of fixing base 6 has the support frame 61 of vertical setting, and the upper end of support frame 61 and the lower terminal surface fixed connection of sheet-feeding board 2. The supporting frame 61 includes a bracket 611, a fixing rod 612 and a fixing head 613. The brackets 611 are fixed to the upper end of the fixing base 6, two of the brackets 611 are arranged at intervals along the length direction of the first panel 21, and two of the brackets 611 are arranged at intervals along the length direction of the second panel 22. The bracket 611 is provided with a vertical waist-shaped hole 6111, and the fixing rod 612 is fixed on the bracket 611 by passing through the waist-shaped hole 6111 through a bolt. The fixing head 613 is hinged to the upper end of the fixing rod 612 and fixed to the lower end surface of the sheet feeding plate 2 by bolts. By adjusting the height of the support frame 61, the height of the sheet feeding plate 2 can be changed.

Referring to fig. 2, the feeder head 1 is mounted with an adjusting mechanism 7 on a side thereof close to the feeding plate 2. The adjusting mechanism 7 includes a slider 71, an adjusting cylinder 72, and a connecting rod 73. The sliding base 71 is fixed on one side of the paper feeding machine head 1, and the sliding base 71 is horizontally arranged below the fixed base 6. The adjusting cylinder 72 is fixed to the inner side of the feeder head 1 and a piston rod of the adjusting cylinder 72 extends in a direction approaching the slider 71. One end of the connecting rod 73 is fixedly connected with the end of the piston rod of the adjusting cylinder 72, and the other end of the connecting rod 73 is fixedly connected with one side of the sliding seat 71 close to the paper feeding machine head 1.

Referring to fig. 1 and 2, a guide groove 711 is formed in an upper end surface of the slide base 71 along a longitudinal direction of the slide base 71, and a slider 62 is fixed to a lower end surface of the fixed base 6, and the slider 62 is slidably disposed in the guide groove 711. Through adjusting cylinder 72 drive, can adjust the position between feed plate 2 and cardboard stop gear 3 to the cardboard of different width of adaptation makes the cardboard can smoothly fall on transport mechanism 4 in the ground.

Referring to fig. 1 and 3, the cardboard limiting mechanism 3 includes a mounting frame 31, a fixing sleeve 32, a threaded column 33, an adjusting seat 34, an adjusting nut 35 and a limiting frame 36. The mounting frame 31 is fixed to the feeder head 1 above the driving roller 41. The fixing sleeve 32 is sleeved on the mounting frame 31. The threaded post 33 is fixed vertically above the fixed sleeve 32. The adjusting seat 34 is sleeved on the threaded column 33. The adjusting nuts 35 are connected to the threaded columns 33 in a threaded mode, two adjusting nuts 35 are arranged, and the two adjusting nuts 35 are located at the upper end and the lower end of the adjusting seat 34 respectively. The limiting frame 36 is fixed on one side of the adjusting seat 34 close to the feeding plate 2 and is vertically arranged. The bottom of the limiting frame 36 is spaced from the upper side of the conveying mechanism 4, the lower end face of the limiting frame 36 is inclined from bottom to top in the direction away from the fixed sleeve 32, and the inclination of the lower end face of the limiting frame 36 is consistent with that of the second panel 22, so that the paper board can easily fall from the space between the limiting frame 36 and the paper feeding plate 2 to the upper side of the conveying mechanism 4. A baffle 37 arranged in parallel with the driving roller 41 is fixed on the paper feeding head 1, and one side of the baffle 37 close to the paper feeding plate 2 is abutted against the position of the limiting frame 36 close to the lower end. The lower end surface of the shutter 37 is spaced apart from the conveyance mechanism 4.

Referring to fig. 1, the conveying mechanism 4 includes a driving roller 41, a fixed frame 42, a driven wheel 43, a conveying belt 44, and a conveying motor 45 (refer to fig. 4). The driving roller 41 is rotatably disposed on the paper feeding head 1, and a length direction of the driving roller 41 is perpendicular to a direction in which the paper sheet advances. The fixing frame 42 has both ends fixed to the paper feeding head 1 and spaced from the driving roller 41. The longitudinal direction of the fixing frame 42 coincides with the longitudinal direction of the driving roller 41. The driven wheel 43 is rotatably disposed on one side of the fixing frame 42 away from the driving roller 41, and a plurality of driven wheels are disposed at intervals along the length direction of the fixing frame 42. The axis of the driven pulley 43 is parallel to the axis of the driving roller 41. The transmission belt 44 is sleeved on the transmission roller 41 and the driven wheel 43. The conveying motor 45 is fixedly installed on the paper feeding machine head 1, an output shaft of the conveying motor 45 is fixedly connected with one end of the driving roller 41, the driving roller 41 is driven to rotate through the conveying motor 45, the conveying belt 44 is driven to rotate, and the paper board falling onto the conveying belt 44 is driven by the conveying belt 44 to move towards the direction of the next process.

Referring to fig. 4, the paper feeding mechanism 5 includes a mounting plate 51, a paper feeding motor 52, a driving lever 53, an eccentric 54, a mounting seat 55, an arc-shaped lever 56, a movable frame 57, and a stopper post 58. The mounting plate 51 is fixedly mounted on the lower end surface of the fixing frame 42 and extends to the position of the driving roller 41, and one side of the mounting plate 51 close to the driving roller 41 is spaced from the driving roller 41. The paper feed motor 52 is fixedly installed at one side of the installation plate 51. One end of the driving rod 53 is fixedly connected with an output shaft of the paper feeding motor 52, and the other end of the driving rod 53 is fixedly connected with an eccentric point of the eccentric wheel 54. The mounting seat 55 is wrapped around the eccentric wheel 54 and is fixedly connected with the eccentric wheel 54. The arc-shaped rod 56 is fixed on the upper end of the mounting seat 55, and the bending direction of the arc-shaped rod 56 is that the middle part of the arc-shaped rod 56 protrudes to the direction away from the mounting seat 55. The movable frame 57 is fixed to the lower end of the mounting seat 55. The lower end of the movable frame 57 is provided with a U-shaped groove 571 matched with the limiting column 58, and the diameter of the limiting column 58 is smaller than the depth of the U-shaped groove 571 in the vertical direction. A plurality of protrusions 561 are fixed on the upper end surface of the arc rod 56, and the protrusions 561 are made of rubber materials.

The implementation principle of the embodiment is as follows: according to the width of cardboard, drive adjustment cylinder 72 for the distance between feed board 2 and cardboard stop gear 3 can adapt to the width of cardboard, and fixing base 6 removes along the guide way 711 of slide 71 under adjustment cylinder 72's effect, thereby makes the position more accurate reliable to feed board 2 can remove, is favorable to avoiding producing the phenomenon that the cardboard blocks. After the position of the paper feeding plate 2 is adjusted, the driving roller 41 drives the driving belt to move by driving the conveying motor 45 and the paper feeding motor 52, the paper plate falling on the conveying belt 44 can advance along the process direction under the action of the conveying belt 44, meanwhile, the arc rod 56 positioned below the fixed frame 42 is jacked up upwards under the action of the eccentric wheel 54, so that the paper plate can be abutted against the arc rod 56, when the eccentric wheel 54 continues to rotate, the arc rod 56 moves the paper plate contacted with the arc rod 56 towards the process advancing direction, when the eccentric wheel 54 continues to rotate, the highest point of the arc rod 56 is lower than the upper surface of the conveying belt 44, the paper plate falls onto the upper end surface of the conveying belt 44, meanwhile, the paper feeding motor 52 enables the eccentric wheel 54 to continue to rotate, so that the highest point of the arc rod 56 is higher than the upper surface of the conveying belt 44, the paper plate is abutted against the arc rod 56, and, further ensure that the cardboard can smoothly advance, block when avoiding the cardboard material loading.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a large-scale gluing machine, includes paper feeding aircraft nose (1), be equipped with on paper feeding aircraft nose (1) and feed board (2), the direction that lies in the cardboard and advances on paper feeding aircraft nose (1) is provided with cardboard stop gear (3) relative with feed board (2), its characterized in that: a conveying mechanism (4) is arranged below the paperboard limiting mechanism (3); a fixed seat (6) is arranged on one side of the paper feeding machine head (1); the upper end of the fixed seat (6) is provided with a supporting frame (61); the upper end of the support frame (61) is fixedly connected with the lower end face of the paper feeding plate (2); a paper feeding mechanism (5) is arranged below the conveying mechanism (4); one side of the paper feeding machine head (1) close to the paper feeding plate (2) is provided with an adjusting mechanism (7) for adjusting the position of the paper feeding plate (2).

2. A large gluing machine according to claim 1, characterized in that: the conveying mechanism (4) comprises a driving roller (41) rotatably arranged on the paper feeding machine head (1), a fixing frame (42) fixed on the paper feeding machine head (1) and arranged at an interval with the driving roller (41), a driven wheel (43) rotatably arranged on one side, away from the driving roller (41), of the fixing frame (42), a conveying belt (44) sleeved on the driving roller (41) and the driven wheel (43), and a conveying motor (45) fixedly arranged on the paper feeding machine head (1); the length direction of the driving roller (41) is perpendicular to the advancing direction of the paper board; the length direction of the fixed frame (42) is consistent with that of the driving roller (41); the driven wheel (43) is rotatably arranged on one side, away from the transmission roller (41), of the fixing frame (42), and the axis of the driven wheel (43) is parallel to the axis of the transmission roller (41); the conveying belt (44) is sleeved on the outer surfaces of the driving roller (41) and the driven wheel (43); the conveying motor (45) is arranged in the paper feeding machine head (1), and an output shaft of the conveying motor (45) is connected with the driving roller (41).

3. A large gluing machine according to claim 1, characterized in that: the paper feeding mechanism (5) comprises a mounting plate (51) which is fixedly mounted on the lower end face of the fixed frame (42) and extends towards the lower part of the transmission roller (41), a paper feeding motor (52) arranged on one side of the mounting plate (51), a driving rod (53) fixedly connected with an output shaft of the paper feeding motor (52), an eccentric wheel (54) fixed with the end part of the driving rod (53) and an eccentric seat (55) coated on the circumference of the eccentric wheel (54), an arc-shaped rod (56) arranged at the upper end of the mounting seat (55), a movable frame (57) arranged at the lower end of the mounting seat (55) and a limiting column (58) arranged on the mounting plate (51; the upper end surface of the arc-shaped rod (56) is provided with a plurality of bulges (561); the lower end of the movable frame (57) is provided with a U-shaped notch (571) matched with the limiting column (58); the diameter of the limiting column (58) is smaller than the depth of the U-shaped notch (571) in the vertical direction.

4. A large gluing machine according to claim 1, characterized in that: the supporting frame (61) comprises a bracket (611) arranged on the fixed seat (6), a fixed rod (612) fixed on the bracket (611) and a fixed head (613) hinged to the upper end of the fixed rod (612); the bracket (611) is vertically arranged, and a vertical waist-shaped hole (6111) is formed in the bracket (611); the fixed head (613) is fixed to the feed plate (2).

5. A large gluing machine according to claim 1, characterized in that: the paperboard limiting mechanism (3) comprises an installation frame (31) which is fixed on the paper feeding machine head (1) and is positioned above the transmission roller (41), a fixed sleeve (32) which is sleeved on the installation frame (31), a threaded column (33) which is vertically arranged above the fixed sleeve (32), an adjusting seat (34) which is sleeved on the threaded column (33), adjusting nuts (35) which are in threaded connection with the threaded column (33) and are respectively positioned at the upper end and the lower end of the adjusting seat (34), and a limiting frame (36) which is arranged on one side, close to the paper feeding plate (2), of the adjusting seat (34); the limiting frame (36) is vertically arranged, and the bottom of the limiting frame (36) is arranged above the conveyor belt (44) at intervals.

6. A large gluing machine according to claim 2, characterized in that: a baffle (37) arranged in parallel with the transmission roller (41) is arranged on the paper feeding machine head (1); one side of the baffle (37) close to the paper feeding plate (2) is abutted against the position, close to the lower end, of the limiting frame (36); the lower end face of the baffle (37) is arranged at intervals with the conveyor belt (44).

7. A large gluing machine according to claim 1, characterized in that: the adjusting mechanism (7) comprises an adjusting cylinder (72) arranged on one side of the paper feeding machine head (1) and a connecting rod (73) arranged at the end part of a piston rod of the adjusting cylinder (72); one side of the fixed seat (6) close to the paper feeding machine head (1) is fixedly connected with the end part of the connecting rod (73).

8. A large gluing machine according to claim 7, characterized in that: the adjusting mechanism (7) further comprises a sliding seat (71) arranged on one side of the paper feeding machine head (1); the upper end surface of the sliding seat (71) is provided with a guide groove (711); the guide groove (711) is arranged along the length direction of the sliding seat (71); the lower end face of the fixed seat (6) is provided with a sliding block (62) which is arranged in the guide groove (711) in a sliding manner.

9. A large gluing machine according to claim 3, characterized in that: the bulges (561) are made of rubber materials.