A paper feeding device for a box gluing machine

Abstract

This utility model discloses a paper feeding device for a carton gluing machine, belonging to the technical field of carton gluing machines. It includes a frame, a left paper feeding mechanism, a right paper feeding mechanism, a left pressure plate mechanism, and a right pressure plate mechanism. The device is characterized by: a middle guide plate mechanism between the left and right paper feeding mechanisms, and a middle pressure plate mechanism between the left and right pressure plate mechanisms. A guide plate cylinder is located below the frame to drive the middle guide plate mechanism to rise and fall, and a pressure plate cylinder is located above the frame to drive the middle pressure plate mechanism to rise and fall. The guide plate cylinder can lift the middle guide plate mechanism, and the pressure plate cylinder retracts to lower the middle pressure plate mechanism, thereby separating the middle guide plate mechanism and the middle pressure plate mechanism from the paper feeding area. This facilitates the sliding of the left and right paper feeding mechanisms relative to the frame, thereby adjusting the stable contact of the left and right paper feeding mechanisms with both sides of the cardboard and improving the ease of adjustment of the middle guide plate mechanism and the middle pressure plate mechanism.

Description

Technical Field

[0001] This utility model relates to the field of box gluing machine technology, specifically to a paper feeding device for a box gluing machine. Background Technology

[0002] In the packaging and printing industry, the application of box gluing machines is the final step in packaging box processing. It involves folding and gluing printed and die-cut cardboard into shape. Machine gluing replaces manual gluing, reducing labor costs and improving efficiency.

[0003] Chinese utility model patent with announcement number "CN207496098U" discloses a box-gluing machine, including a box-gluing machine body, a left wall plate, a left guide plate, an upper aluminum plate, a middle guide plate, a right guide plate, a right wall plate, and screws. The middle guide plate is connected to the top center of the box-gluing machine body by screws. The upper aluminum plate is installed on the top of the middle guide plate. The left guide plate is installed on one side of the middle guide plate. The left wall plate is connected to one side of the left guide plate by bolts. The right guide plate is installed on the other side of the middle guide plate. The right wall plate is connected to one side of the right guide plate by bolts. The left guide plate is connected to the box-gluing machine body by bolts, and the right guide plate is connected to the box-gluing machine body by bolts. There are three screws. The upper aluminum plate works in conjunction with the middle guide plate. This box-gluing machine is easy to install and disassemble, provides stability for large boxes, and is convenient for small boxes.

[0004] However, the aforementioned box-gluing machine still has the following drawbacks: In the process, the upper aluminum plate needs to be used in conjunction with the middle guide plate. When the middle guide plate is removed, the upper aluminum plate is still screwed on the top of the gluing machine body. When the cardboard passes by, the upper aluminum plate will press down on the cardboard, and creases will appear in the middle of the formed cardboard, which will damage the structural strength of the cardboard.

[0005] Secondly, the left and right guide plates can only support the formed paper box. The paper box is prone to shifting when passing through the left and right guide plates, and the crease position of the pre-folded paper box is inaccurate, resulting in a high defect rate.

[0006] Therefore, it is necessary to improve upon the aforementioned shortcomings. Utility Model Content

[0007] The purpose of this invention is to provide a paper feeding device for a gluing machine that can accommodate different paper box sizes and improve the paper box forming rate, so as to solve the above-mentioned problems existing in the prior art.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a paper feeding device for a gluing machine, comprising a frame, a left paper feeding mechanism, a right paper feeding mechanism, a left pressure plate mechanism, and a right pressure plate mechanism, wherein the left pressure plate mechanism is correspondingly arranged with the left paper feeding mechanism, and the right pressure plate mechanism is correspondingly arranged with the right paper feeding mechanism, characterized in that: a middle guide plate mechanism is provided between the left paper feeding mechanism and the right paper feeding mechanism, a middle pressure plate mechanism is provided between the left pressure plate mechanism and the right pressure plate mechanism, a guide plate cylinder for driving the middle guide plate mechanism to rise and fall is provided below the frame, and a pressure plate cylinder for driving the middle pressure plate mechanism to rise and fall is provided above the frame.

[0009] By adopting the above technical solution: when the gluing machine needs to adjust the distance between the left and right paper feeding mechanisms and the distance between the left and right pressure plate mechanisms, the guide plate cylinder can lift the middle guide plate mechanism, and the pressure plate cylinder can retract to drive the middle pressure plate mechanism to descend, thereby removing the middle guide plate mechanism and the middle pressure plate mechanism from the paper feeding area. This facilitates the sliding of the left and right paper feeding mechanisms, the left and right pressure plate mechanisms relative to the frame, thereby adjusting the stable contact of the left and right paper feeding mechanisms with both sides of the cardboard and improving the convenience of adjusting the middle guide plate mechanism and the middle pressure plate mechanism.

[0010] The paper feeding device of the above-mentioned gluing machine can be further configured as follows: the middle pressure plate mechanism includes a middle fixed plate, several sets of middle pressure plate assemblies, middle tensioning assemblies located at both ends of the middle fixed plate, and a middle pressure plate belt. The body of the pressure plate cylinder is fixedly connected to the frame, and the output end is detachably connected to the middle fixed plate.

[0011] By adopting the above technical solution: the central tensioning component can effectively tension the central pressure plate belt, ensuring its smooth operation. The central pressure plate component achieves synchronous movement through the central pressure plate belt, so that the cardboard is evenly pressed under the action of the central pressure plate mechanism. The pressure plate cylinder drives the central pressure plate component to move up and down, thereby realizing the overall lifting and lowering of the central pressure plate mechanism. This not only makes it easy to flexibly adjust the pressure position according to the size of the carton, but also allows for coordinated avoidance when adjusting the left and right pressure plate mechanisms, further preventing misalignment of the carton indentation or the generation of creases, effectively improving the carton forming accuracy and yield.

[0012] The paper feeding device of the above-mentioned box gluing machine can be further configured as follows: the intermediate pressure plate assembly includes an intermediate pressure plate bracket, an intermediate pressure plate rod, and a plurality of intermediate pressure plate support wheels. One end of the intermediate pressure plate bracket is hinged to the intermediate fixed plate and the other end is hinged to the intermediate pressure plate rod. The intermediate pressure plate support wheels are rotatably connected to the intermediate pressure plate rod. The outer circumferential surface of the intermediate pressure plate support wheels abuts against the intermediate pressure plate belt. The intermediate tensioning assembly includes an intermediate tensioning bracket and a plurality of intermediate tensioning wheels. The intermediate tensioning wheels are rotatably engaged with the intermediate tensioning bracket. The intermediate tensioning bracket is hinged to the intermediate fixed plate.

[0013] By adopting the above technical solution: the rotating middle pressure plate bracket can adjust the distance between the middle pressure plate support wheel and the middle fixed plate, thereby adjusting the distance between the lower end of the middle pressure plate belt and the lower end of the middle fixed plate. The middle part of the middle pressure plate rod is hinged to the middle pressure plate bracket. After the middle pressure plate bracket rotates, the middle pressure plate support wheels at both ends can be readjusted to a horizontal state, so that all pressure plate support wheels can contact the middle pressure plate belt, improving the tightness of contact between the middle pressure plate belt and the cardboard.

[0014] The paper feeding device of the above-mentioned box gluing machine can be further configured as follows: the central guide plate mechanism includes a central guide plate, a central guide drive wheel, several central guide support wheels, and a central guide conveyor belt. The central guide support wheels are rotatably mounted on the central guide plate. The central guide drive wheel is rotatably engaged with the machine frame. The central guide conveyor belt abuts against the outer circumferential surfaces of the central guide drive wheel and the central guide support wheels. The central guide drive wheel can drive the central guide conveyor belt to rotate around the central guide plate. The body of the guide plate cylinder is fixedly connected to the machine frame, and the output end is provided with a guide plate fixing block. The guide plate fixing block is detachably connected to the central guide plate by bolts. The central guide plate has a guide plate groove, and a guide plate tensioning wheel is slidably engaged in the guide plate groove.

[0015] By adopting the above technical solution: the central guide drive wheel is rotatably mounted on the frame, and when the guide plate cylinder is running, it can push the central guide plate to move up and down. During the movement of the central guide plate, the guide plate tensioning wheel can slide in the guide plate groove, which can be done without changing the overall length of the central guide conveyor belt. At the same time, after the adjustment is completed, the guide plate tensioning wheel can be moved again in the guide plate groove, thereby adjusting the tension of the central guide conveyor belt and improving the uniformity of the contact between the central guide conveyor belt and the cardboard.

[0016] The paper feeding device of the above-mentioned box gluing machine can be further configured as follows: the left paper feeding mechanism includes a left paper feeding board, a left paper feeding drive wheel rotatably disposed on the left paper feeding board, several left paper feeding support wheels, and a left paper feeding belt. The left paper feeding board has a left paper feeding adjustment groove, and a left paper feeding tensioning wheel passes through the left paper feeding adjustment groove. The left paper feeding tensioning wheel slides in cooperation with the left paper feeding adjustment groove. The left paper feeding tensioning wheel can adjust the tension of the left paper feeding belt by moving axially along the left paper feeding adjustment groove. The right paper feeding mechanism has the same structure as the left paper feeding mechanism.

[0017] By adopting the above technical solution, the position of the left paper feeding tensioning wheel in the left paper feeding adjustment groove can be flexibly adjusted. By changing the relative distance between it and the left paper feeding drive wheel and support wheel, the tension of the left paper feeding belt can be precisely controlled, thereby adapting to the conveying requirements of paperboards of different thicknesses and materials. This ensures that the left paper feeding belt is always close to the paperboard surface to provide stable friction and avoids slippage or deviation during the conveying process. The right paper feeding mechanism adopts the same structure to further ensure the synchronization of paper feeding on both sides and the overall stability, effectively improving the adaptability of the gluing machine to various specifications of paperboard and the paper feeding accuracy.

[0018] The paper feeding device of the above-mentioned gluing machine can be further configured as follows: the left paper feeding mechanism is linked to the left crooked belt mechanism, and the right paper feeding mechanism is linked to the right crooked belt mechanism. The left crooked belt mechanism includes a left crooked belt fixing plate, a left crooked belt drive wheel rotatably set on the left crooked belt fixing plate, a left crooked belt roller, and a left crooked side belt. The left crooked side belt is linked to the left crooked belt drive wheel. Several left single-sided wheels are provided above the left crooked belt fixing plate to adjust the tilt of the left crooked side belt. The rotation of the left crooked belt drive wheel drives the left crooked side belt to rotate circumferentially, causing the side edge of the cardboard to fold inward. The right crooked belt mechanism has the same structure as the left crooked belt mechanism.

[0019] By adopting the above technical solution: the left single-sided wheel can make the left side belt set at an angle. When the cardboard is conveyed along the left paper feeding mechanism, the left side belt drive wheel drives the left side belt to rotate, thereby controlling the inward folding of the side of the cardboard. In conjunction with the right side belt mechanism, the cardboard can be folded inward on both sides simultaneously, ensuring that the folding angles of the two sides of the cardboard are consistent and ensuring the neatness of the fit when the cardboard is folded inward.

[0020] The paper feeding device of the above-mentioned gluing machine can be further configured as follows: the left pressure plate mechanism includes a left fixed plate, several left pressure plate assemblies, a left tensioning assembly, a left pressure plate drive wheel, and a left pressure plate belt. The left pressure plate drive wheel is rotatably mounted on the frame. The left pressure plate assembly can press the left pressure plate belt. The rotation of the left pressure plate drive wheel can drive the left pressure plate belt to rotate. The right pressure plate mechanism has the same structure as the left pressure plate mechanism.

[0021] By adopting the above technical solution: the left pressure plate drive wheel rotates to drive the left pressure plate belt to rotate continuously, the left pressure plate assembly applies stable pressure to the left pressure plate belt to press the cardboard in the conveyor, the left tensioning assembly ensures that the left pressure plate belt always maintains a suitable tension to transmit power and prevent slippage, and the right pressure plate mechanism adopts the same structure and is symmetrically arranged. Together, they achieve uniform, stable and adjustable pressing and conveying of both sides of the cardboard, effectively preventing the cardboard from shifting or wrinkling, and ensuring the accurate positioning and forming quality of the cardboard during the gluing process.

[0022] The paper feeding device of the above-mentioned box gluing machine can be further configured as follows: the left pressure plate mechanism also includes a left forming component, and the right pressure plate mechanism also includes a right forming component. The left forming component includes a left fixed seat, several sets of left adjusting slide plates, and a left forming blade. One end of the left adjusting slide plate is slidably engaged with the left fixed seat, and the other end is fixedly connected to the left forming blade. A left adjusting plate is connected above the left adjusting slide plate. The left adjusting plate is rotatably connected to a left adjusting handwheel. The end of the left adjusting handwheel is threadedly connected to the left fixed seat. The rotation of the left adjusting handwheel drives the left adjusting slide plate to reciprocate along the axial direction. The right pressure plate mechanism has the same structure as the left pressure plate mechanism.

[0023] By adopting the above technical solution: the left forming component cooperates with the left turning belt mechanism. When the cardboard moves in the paper feeding device, the left forming blade can press and fold the cardboard at the crease, so that the cardboard naturally curls up along the crease. This makes it easier for the left turning belt to make stable contact with the side of the cardboard. In addition, the adjusting handwheel on the left adjusting plate can adjust the position of the left adjusting slide relative to the left fixed seat, thereby adjusting the contact depth between the forming blade and the cardboard and adjusting the degree of folding of the cardboard.

[0024] The paper feeding device of the above-mentioned box gluing machine can be further configured as follows: the left pressure plate assembly includes a left pressure plate bracket, a left pressure plate mounting rod, and a plurality of left pressure plate support wheels rotatably mounted on the left pressure plate mounting rod. One end of the left pressure plate bracket is hinged to the left fixed plate and the other end is hinged to the left pressure plate mounting rod. The left pressure plate support wheels can contact the left pressure plate belt.

[0025] By adopting the above technical solution, the double hinge structure of the left pressure plate bracket, the left fixed plate, and the left pressure plate mounting rod allows for flexible adjustment of the angle and position of the left pressure plate support wheel, thereby precisely controlling the contact pressure of the left pressure plate support wheel on the left pressure plate belt. This ensures that the left pressure plate belt applies a uniform and stable pressing force to the paperboard, effectively preventing the paperboard from shifting or deforming during transport, and improving the reliability and consistency of paper pressing.

[0026] The paper feeding device of the above-mentioned box gluing machine can be further configured as follows: the left tensioning component includes a left tensioning bracket and several left tensioning rollers that rotate with the left tensioning bracket, and the left tensioning bracket is hinged to the left fixed plate.

[0027] By adopting the above technical solution, the hinged connection between the left tension bracket and the left fixed plate allows for flexible adjustment of the position of the left tension roller. By changing the relative distance between the left tension roller and the left pressure plate drive wheel, the tension of the left pressure plate belt can be easily adjusted to maintain optimal working tension. This ensures the effectiveness of power transmission, avoids wear caused by excessive tension, extends the belt's service life, and ensures the smoothness of the paper feeding process.

[0028] The beneficial effects of this utility model are as follows: By setting a central guide plate mechanism and a central pressure plate mechanism in the middle of the frame, the central guide conveyor belt on the central guide plate and the central pressure plate belt on the central pressure plate can adhere to both sides of the cardboard. In conjunction with the left pressure plate belt of the left pressure plate mechanism, the left feeding conveyor belt of the left feeding mechanism, the right pressure plate belt of the right pressure plate mechanism, and the right feeding conveyor belt of the right feeding mechanism, the pressure plates on both sides and in the middle of the cardboard can be supported, preventing the wide cardboard from shifting and collapsing during the feeding process. Furthermore, a guide plate cylinder and a pressure plate cylinder are set on the frame. The guide plate cylinder can drive the central guide plate mechanism to move downward, and the pressure plate cylinder can drive the central pressure plate mechanism to move upward, causing the central guide plate mechanism and the central pressure plate mechanism to move away from the feeding and pressure plate area. This allows the left feeding mechanism, the right feeding mechanism, the left pressure plate mechanism, and the right pressure plate mechanism to get closer together, which can accommodate cardboard with a narrower width and improves the applicability and ease of adjustment of the feeding device of the gluing machine to different cardboards.

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the paper feeding device of the gluing machine of this utility model; Figure 2 This is a schematic diagram of the left paper feeding mechanism of this utility model; Figure 3 This is a schematic diagram of the left pressure plate mechanism of this utility model; Figure 4 For the present utility model Figure 3 Enlarged diagram of part A in the middle; Figure 5 This is a schematic diagram of the structure of the left molding component of this utility model; Figure 6 This is a schematic diagram of the left-turning mechanism of this utility model; Figure 7 This is a schematic diagram of the right paper feeding mechanism of this utility model; Figure 8 This is a schematic diagram of the right pressure plate mechanism of this utility model; Figure 9 For the present utility model Figure 8 Enlarged diagram of section B; Figure 10 This is a schematic diagram of the right molding component of this utility model; Figure 11 This is a schematic diagram of the right-turn mechanism of this utility model; Figure 12 This is a schematic diagram of the structure of the middle guide plate mechanism of this utility model; Figure 13 This is a schematic diagram of the structure of the medium pressure plate mechanism of this utility model; Label annotations: Frame 1, Guide plate cylinder 11, Pressure plate cylinder 12 Left paper feeding mechanism 2, left paper feeding board 21, left paper feeding drive wheel 22, left paper feeding support wheel 23, left paper feeding belt 24, left paper feeding adjustment groove 25, left paper feeding tensioning wheel 26. 3. Right paper feeding mechanism; 31. Right paperboard feeding mechanism; 32. Right paper feeding drive wheel; 33. Right paper feeding support wheel; 34. Right paper feeding belt; 35. Right paper feeding adjustment groove; 36. Right paper feeding tensioning wheel. Left pressure plate mechanism 4, left fixed plate 41, left pressure plate assembly 42, left pressure plate bracket 421, left pressure plate mounting rod 422, left pressure plate support wheel 423, left tensioning assembly 43, left tensioning bracket 431, left tensioning roller 432, left pressure plate drive wheel 44, left pressure plate belt 45, left forming assembly 46, left fixed seat 461, left adjusting slide plate 462, left forming blade 463, left adjusting plate 464, left adjusting handwheel 465. Right pressure plate mechanism 5, right fixed plate 51, right pressure plate assembly 52, right pressure plate bracket 521, right pressure plate mounting rod 522, right pressure plate support wheel 523, right tensioning assembly 53, right tensioning bracket 531, right tensioning roller 532, right pressure plate drive wheel 54, right pressure plate belt 55, right forming assembly 56, right fixed seat 561, right adjusting slide plate 562, right forming blade 563, right adjusting plate 564, right adjusting handwheel 565. 6. Central guide plate mechanism; 61. Central guide plate; 611. Central guide plate groove; 62. Central guide drive wheel; 63. Central guide support wheel; 64. Central guide conveyor belt; 65. Central guide plate fixing block; 66. Central guide plate tensioning wheel. 7. Medium pressure plate mechanism, 71. Medium fixed plate, 72. Medium pressure plate assembly, 721. Medium pressure plate bracket, 722. Medium pressure plate rod, 723. Medium pressure plate support wheel, 73. Medium tensioning assembly, 731. Medium tensioning bracket, 732. Medium tensioning wheel, 74. Medium pressure plate belt.

[0031] Left bend mechanism 8, left bend fixing plate 81, left bend drive wheel 82, left bend roller 83, left bend side belt 84, left single-sided wheel 85 Right bend mechanism 9, left bend fixing plate 91, right bend drive wheel 92, right bend roller 93, right bend side belt 94, right single side wheel 95. Detailed Implementation

[0032] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0033] A paper feeding device for a gluing machine, such as Figures 1 to 13As shown, the machine includes a frame 1, a left paper feeding mechanism 2, a right paper feeding mechanism 3, a left pressure plate mechanism 4, and a right pressure plate mechanism 5. The left pressure plate mechanism 4 is arranged correspondingly to the left paper feeding mechanism 2, and the right pressure plate mechanism 5 is arranged correspondingly to the right paper feeding mechanism 3. A middle guide plate mechanism 6 is provided between the left paper feeding mechanism 2 and the right paper feeding mechanism 3, and a middle pressure plate mechanism 7 is provided between the left pressure plate mechanism 4 and the right pressure plate mechanism 5. A guide plate cylinder 11 for driving the middle guide plate mechanism 6 to rise and fall is provided below the frame 1, and a pressure plate cylinder 12 for driving the middle pressure plate mechanism 7 to rise and fall is provided above the frame 1. When the gluing machine needs to adjust the distance between the left paper feeding mechanism 2 and the right paper feeding mechanism 3, as well as the distance between the left pressure plate mechanism 4 and the right pressure plate mechanism 5, the guide plate cylinder 11 can lift the middle guide plate mechanism 6, and the pressure plate cylinder 12 can contract to drive the middle pressure plate mechanism 7 to descend, thereby removing the middle guide plate mechanism 6 and the middle pressure plate mechanism 7 from the paper feeding area, making it easier for the left paper feeding mechanism 2, the right paper feeding mechanism 3, the left pressure plate mechanism 4, and the right pressure plate mechanism 5 to slide relative to the frame 1, thereby adjusting the stable contact of the left paper feeding mechanism 2 and the right paper feeding mechanism 3 with the two sides of the cardboard, and improving the convenience of adjusting the middle guide plate mechanism 6 and the middle pressure plate mechanism 7.

[0034] like Figures 2 to 6 As shown, the left paper feeding mechanism 2 includes a left paper feeding board 21, a left paper feeding drive wheel 22 rotatably mounted on the left paper feeding board 21, several left paper feeding support wheels 23, and a left paper feeding belt 24. The left paper feeding board 21 has a left paper feeding adjustment groove 25, and a left paper feeding tensioning wheel 26 passes through the left paper feeding adjustment groove 25. The left paper feeding tensioning wheel 26 slides in cooperation with the left paper feeding adjustment groove 25. The left paper feeding tensioning wheel 26 can adjust the tension of the left paper feeding belt 24 by moving axially along the left paper feeding adjustment groove 25.

[0035] The left paper feeding mechanism 2 is linked to the left bend belt mechanism 8, and the right paper feeding mechanism 3 is linked to the right bend belt mechanism 9. The left bend belt mechanism 8 includes a left bend belt fixing plate 81, a left bend belt drive wheel 82 rotatably mounted on the left bend belt fixing plate 81, a left bend belt roller 83, and a left bend belt 84. The left bend belt 84 is linked to the left bend belt drive wheel 82. Several left single-sided wheels 85 are provided above the left bend belt fixing plate 81 for adjusting the tilt of the left bend belt 84. The rotation of the left bend belt drive wheel 82 drives the left bend belt 84 to rotate circumferentially, causing the left side of the paperboard to fold inward.

[0036] The left pressure plate mechanism 4 includes a left fixed plate 41, several left pressure plate assemblies 42, a left tensioning assembly 43, a left pressure plate drive wheel 44, and a left pressure plate belt 45. The left pressure plate drive wheel 44 is rotatably mounted on the frame 1. The left pressure plate assembly 42 can press the left pressure plate belt 45. The rotation of the left pressure plate drive wheel 44 can drive the left pressure plate belt 45 to rotate.

[0037] The left pressure plate assembly 42 includes a left pressure plate bracket 421, a left pressure plate mounting rod 422, and a plurality of left pressure plate support wheels 423 rotatably mounted on the left pressure plate mounting rod 422. One end of the left pressure plate bracket 421 is hinged to the left fixed plate 41 and the other end is hinged to the left pressure plate mounting rod 422. The left pressure plate support wheels 423 can contact the left pressure plate belt 45.

[0038] The left tensioning assembly 43 includes a left tensioning bracket 431 and several left tensioning rollers 432 that rotate with the left tensioning bracket 431. The left tensioning bracket 431 is hinged to the left fixed plate 41.

[0039] The left pressure plate mechanism 4 also includes a left forming component 46, and the right pressure plate mechanism 5 also includes a right forming component 56. The left forming component 46 includes a left fixed seat 461, several sets of left adjusting slide plates 462, and a left forming blade 463. One end of the left adjusting slide plate 462 is slidably engaged with the left fixed seat 461, and the other end is fixedly connected to the left forming blade 463. A left adjusting plate 464 is connected above the left adjusting slide plate 462. A left adjusting handwheel 465 is rotatably connected to the left adjusting handwheel 465. The end of the left adjusting handwheel 465 is threadedly connected to the left fixed seat 461. The rotation of the left adjusting handwheel 465 drives the left adjusting slide plate 462 to reciprocate along the axial direction.

[0040] like Figures 7 to 11 As shown, the right paper feeding mechanism 3 includes a right paper feeding board 31, a right paper feeding drive wheel 32 rotatably mounted on the right paper feeding board 31, several right paper feeding support wheels 33, and a right paper feeding belt 34. The right paper feeding board 31 has a right paper feeding adjustment groove 35, and a right paper feeding tension wheel 36 passes through the right paper feeding adjustment groove 35. The right paper feeding tension wheel 36 slides in cooperation with the right paper feeding adjustment groove 35. The right paper feeding tension wheel 36 can adjust the tension of the right paper feeding belt 34 by moving axially along the right paper feeding adjustment groove 35.

[0041] The right paper feeding mechanism 3 is linked to the right bend belt mechanism 9. The right bend belt mechanism 9 includes a right bend belt fixing plate 91, a right bend belt drive wheel 92 rotatably mounted on the right bend belt fixing plate 91, a right bend belt roller 93, and a right bend belt 94. The right bend belt 94 is linked to the right bend belt drive wheel 92. Several right single-sided wheels 95 are provided above the right bend belt fixing plate 91 for adjusting the inclination of the right bend belt 94. The rotation of the right bend belt drive wheel 92 drives the right bend belt 94 to rotate circumferentially, causing the side of the paperboard to fold inward.

[0042] The right pressure plate mechanism 5 includes a right fixed plate 51, several right pressure plate assemblies 52, a right tensioning assembly 53, a right pressure plate drive wheel 54, and a right pressure plate belt 55. The right pressure plate drive wheel 54 is rotatably mounted on the frame 1. The right pressure plate assembly 52 can press the right pressure plate belt 55. The rotation of the right pressure plate drive wheel 54 can drive the right pressure plate belt 55 to rotate.

[0043] The right pressure plate assembly 52 includes a right pressure plate bracket 521, a right pressure plate mounting rod 522, and a plurality of right pressure plate support wheels 523 rotatably mounted on the right pressure plate mounting rod 522. One end of the right pressure plate bracket 521 is hinged to the right fixed plate 51 and the other end is hinged to the right pressure plate mounting rod 522. The right pressure plate support wheels 523 can contact the right pressure plate belt 55.

[0044] The right tensioning assembly 53 includes a right tensioning bracket 531 and several right tensioning rollers 532 that rotate with the right tensioning bracket 531. The right tensioning bracket 531 is hinged to the right fixed plate 51.

[0045] The right pressure plate mechanism 5 also includes a right forming component 56. The right forming component 56 includes a right fixed seat 561, several sets of right adjusting slide plates 562, and a right forming blade 563. One end of the right adjusting slide plate 562 is slidably engaged with the right fixed seat 561, and the other end is fixedly connected to the right forming blade 563. A right adjusting plate 564 is connected above the right adjusting slide plate 562. A right adjusting handwheel 565 is rotatably connected to the right adjusting handwheel 565. The end of the right adjusting handwheel 565 is threadedly connected to the right fixed seat 561. The rotation of the right adjusting handwheel 565 drives the right adjusting slide plate 562 to reciprocate along the axial direction.

[0046] like Figure 12 As shown, the central guide plate mechanism 6 includes a central guide plate 61, a central guide drive wheel 62, several central guide support wheels 63, and a central guide conveyor belt 64. The central guide support wheels 63 are rotatably mounted on the central guide plate 61. The central guide drive wheel 62 is rotatably engaged with the frame 1. The central guide conveyor belt 64 abuts against the outer circumferential surfaces of the central guide drive wheel 62 and the central guide support wheels 63. The central guide drive wheel 62 can drive the central guide conveyor belt 64 to rotate around the central guide plate 61. The body of the guide plate cylinder 11 is fixedly connected to the frame 1, and the output end is provided with a guide plate fixing block 65. The guide plate fixing block 65 is detachably connected to the central guide plate 61 by bolts. The central guide plate 61 has a guide plate groove 611, and the guide plate tensioning wheel 66 is slidably engaged in the guide plate groove 611. The central guide drive wheel 62 is rotatably mounted on the frame 1. When the guide plate cylinder 11 is running, it can push the central guide plate 61 to move up and down. During the movement of the central guide plate 61, the guide plate tension wheel 66 can slide in the guide plate groove 611, so that the overall length of the central guide conveyor belt 64 can be changed. At the same time, after the adjustment is completed, the guide plate tension wheel 66 can be moved again in the guide plate groove 611, thereby adjusting the tension of the central guide conveyor belt 64 and improving the uniformity of the contact between the central guide conveyor belt 64 and the cardboard.

[0047] like Figure 13As shown, the intermediate pressure plate mechanism 7 includes an intermediate fixed plate 71, several sets of intermediate pressure plate assemblies 72, intermediate tensioning assemblies 73 located at both ends of the intermediate fixed plate 71, and an intermediate pressure plate belt 74. The body of the pressure plate cylinder 12 is fixedly connected to the frame 1, and its output end is detachably connected to the intermediate fixed plate 71. The intermediate tensioning assembly 73 can effectively tension the intermediate pressure plate belt 74 to ensure its smooth operation. The intermediate pressure plate assemblies 72 achieve synchronous movement through the intermediate pressure plate belt 74, so that the cardboard is evenly pressed under the action of the intermediate pressure plate mechanism 7. The pressure plate cylinder 12 drives the intermediate fixed plate 71 to move up and down, thereby realizing the overall lifting and lowering of the intermediate pressure plate mechanism 7. This not only facilitates flexible adjustment of the pressure position according to the size of the carton, but also allows for coordinated avoidance when adjusting the left pressure plate mechanism 4 and the right pressure plate mechanism 5, further preventing misalignment of the carton indentation or the generation of creases, effectively improving the carton forming accuracy and yield.

[0048] The intermediate pressure plate assembly 72 includes an intermediate pressure plate bracket 721, an intermediate pressure plate rod 722, and a plurality of intermediate pressure plate support wheels 723. One end of the intermediate pressure plate bracket 721 is hinged to the intermediate fixed plate 71, and the other end is hinged to the intermediate pressure plate rod 722. The intermediate pressure plate support wheel 723 is rotatably connected to the intermediate pressure plate rod 722, and the outer circumferential surface of the intermediate pressure plate support wheel 723 abuts against the intermediate pressure plate belt 74. The intermediate tensioning assembly 73 includes an intermediate tensioning bracket 731 and a plurality of intermediate tensioning wheels 732. The intermediate tensioning wheels 732 are rotatably engaged with the intermediate tensioning bracket 731, and the intermediate tensioning bracket 731 is hinged to the intermediate fixed plate 71. The rotating intermediate pressure plate bracket 721 can adjust the distance between the intermediate pressure plate support wheel 723 and the intermediate fixed plate 71, thereby adjusting the distance between the lower end of the intermediate pressure plate belt 74 and the lower end of the intermediate fixed plate 71. The middle part of the intermediate pressure plate rod 722 is hinged to the intermediate pressure plate bracket 721. After the intermediate pressure plate bracket 721 rotates, the intermediate pressure plate support wheels 723 at both ends can be readjusted to a horizontal state, so that all intermediate pressure plate support wheels 723 can contact the intermediate pressure plate belt 74, improving the tightness of contact between the intermediate pressure plate belt 74 and the cardboard.

[0049] The working principle of this embodiment is as follows: When the cardboard is fed into the paper feeding device, the cardboard is supported on both sides by the left paper feeding mechanism 2 and the right paper feeding mechanism 3, and in the middle by the central guide plate mechanism 6. The left paper feeding drive wheel 22 and the right paper feeding drive wheel 32 are driven to rotate by the drive rod, so that the left paper feeding belt 24 and the right paper feeding belt 34 rotate synchronously, and the central guide drive wheel 62 drives the central guide conveyor belt 64 to rotate synchronously, and the cardboard moves synchronously.

[0050] During the movement of the cardboard, the left tensioning assembly 43 is inclined relative to the left pressure plate assembly 42. When the cardboard enters the pressure plate area, the left tensioning roller 432 on the left tensioning bracket 431 guides the cardboard into the space between the left pressure plate assembly 42 and the left paper feeding mechanism 2. The left pressure plate support wheel 423 on the left pressure plate bracket 421 supports the left pressure plate belt 45. The upper and lower sides of the cardboard are in contact with the left pressure plate belt 45 and the left paper feeding belt 24 respectively, and can move forward stably. The same applies to the right pressure plate mechanism 5 and the right paper feeding mechanism 3.

[0051] Meanwhile, the central pressure plate belt 74 on the central fixed plate 71 and the central guide conveyor belt 64 on the central guide plate 61 can also fit with the upper and lower sides of the middle of the cardboard to support the middle of the cardboard and maintain the structural stability of the cardboard.

[0052] After the cardboard is glued and leaves the pressure plate area, the left forming component 46 presses and folds the cardboard at the left crease, and the right forming component 56 simultaneously presses and folds the cardboard at the right crease. The two sides of the cardboard fold upward naturally. Then, the left bend tape 84 contacts the upper left fold of the cardboard, and the right bend tape 94 contacts the upper right fold of the cardboard. The cardboard continues to move, and the folded edges of the cardboard are guided by the left bend tape 84 and the right bend tape 94 to fold inward continuously until the two folded edges of the cardboard overlap, and the cardboard is formed.

[0053] When the gluing machine does not need to support and convey the middle of the cardboard through the middle guide plate mechanism 6 and the middle pressure plate mechanism 7, the guide plate cylinder 11 retracts, causing the guide plate fixing block 65 to move down. The middle guide plate 61 and the guide plate fixing block 65 move down synchronously, the middle guide plate mechanism 6 descends, the pressure plate cylinder 12 retracts, causing the middle fixing plate 71 to move up, the middle pressure plate mechanism 7 moves up, and then the positions of the left paper feeding mechanism 2, the right paper feeding mechanism 3, the left pressure plate mechanism 4, and the right pressure plate mechanism 5 on the frame 1 are moved to achieve adaptive adjustment of the cardboard width.

[0054] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A paper feeding device for a carton gluing machine, comprising a frame, a left paper feeding mechanism, a right paper feeding mechanism, a left pressure plate mechanism, and a right pressure plate mechanism, wherein the left pressure plate mechanism is correspondingly arranged with the left paper feeding mechanism, and the right pressure plate mechanism is correspondingly arranged with the right paper feeding mechanism, characterized in that: A middle guide plate mechanism is provided between the left paper feeding mechanism and the right paper feeding mechanism, and a middle pressure plate mechanism is provided between the left pressure plate mechanism and the right pressure plate mechanism. A guide plate cylinder for driving the middle guide plate mechanism to rise and fall is provided below the frame, and a pressure plate cylinder for driving the middle pressure plate mechanism to rise and fall is provided above the frame.

2. The paper feeding device for a gluing machine according to claim 1, characterized in that: The intermediate pressure plate mechanism includes an intermediate fixed plate, several sets of intermediate pressure plate assemblies, intermediate tensioning assemblies located at both ends of the intermediate fixed plate, and an intermediate pressure plate belt. The body of the pressure plate cylinder is fixedly connected to the frame, and its output end is detachably connected to the intermediate fixed plate.

3. The paper feeding device for a gluing machine according to claim 2, characterized in that: The intermediate pressure plate assembly includes an intermediate pressure plate bracket, an intermediate pressure plate rod, and several intermediate pressure plate support wheels. One end of the intermediate pressure plate bracket is hinged to the intermediate fixed plate, and the other end is hinged to the intermediate pressure plate rod. The intermediate pressure plate support wheels are rotatably connected to the intermediate pressure plate rod, and the outer circumferential surface of the intermediate pressure plate support wheels abuts against the intermediate pressure plate belt. The intermediate tensioning assembly includes an intermediate tensioning bracket and several intermediate tensioning wheels. The intermediate tensioning wheels are rotatably engaged with the intermediate tensioning bracket, and the intermediate tensioning bracket is hinged to the intermediate fixed plate.

4. The paper feeding device for a gluing machine according to claim 3, characterized in that: The central guide plate mechanism includes a central guide plate, a central guide drive wheel, several central guide support wheels, and a central guide conveyor belt. The central guide support wheels are rotatably mounted on the central guide plate. The central guide drive wheel is rotatably engaged with the frame. The central guide conveyor belt abuts against the outer circumferential surfaces of the central guide drive wheel and the central guide support wheels. The central guide drive wheel can drive the central guide conveyor belt to rotate around the central guide plate. The body of the guide plate cylinder is fixedly connected to the frame, and a guide plate fixing block is provided at the output end. The guide plate fixing block is detachably connected to the central guide plate by bolts. The central guide plate has a guide plate groove, and a guide plate tensioning wheel is slidably engaged in the guide plate groove.

5. A paper feeding device for a gluing machine according to any one of claims 1 to 4, characterized in that: The left paper feeding mechanism includes a left paper feeding board, a left paper feeding drive wheel rotatably mounted on the left paper feeding board, several left paper feeding support wheels, and a left paper feeding belt. The left paper feeding board has a left paper feeding adjustment groove, and a left paper feeding tensioning wheel passes through the left paper feeding adjustment groove. The left paper feeding tensioning wheel slides in conjunction with the left paper feeding adjustment groove. The left paper feeding tensioning wheel can adjust the tension of the left paper feeding belt by moving axially along the left paper feeding adjustment groove. The right paper feeding mechanism has the same structure as the left paper feeding mechanism.

6. The paper feeding device for a gluing machine according to claim 5, characterized in that: The left paper feeding mechanism is linked to a left bend belt mechanism, and the right paper feeding mechanism is linked to a right bend belt mechanism. The left bend belt mechanism includes a left bend belt fixing plate, a left bend belt drive wheel rotatably mounted on the left bend belt fixing plate, a left bend belt roller, and a left bend belt. The left bend belt is linked to the left bend belt drive wheel. Several left single-sided wheels are provided above the left bend belt fixing plate to adjust the tilt of the left bend belt. The rotation of the left bend belt drive wheel drives the left bend belt to rotate circumferentially, causing the side of the paperboard to fold inward. The right bend belt mechanism has the same structure as the left bend belt mechanism.

7. The paper feeding device for a gluing machine according to claim 6, characterized in that: The left pressure plate mechanism includes a left fixed plate, several left pressure plate assemblies, a left tensioning assembly, a left pressure plate drive wheel, and a left pressure plate belt. The left pressure plate drive wheel is rotatably mounted on the frame. The left pressure plate assembly can press the left pressure plate belt. The rotation of the left pressure plate drive wheel can drive the left pressure plate belt to rotate. The right pressure plate mechanism has the same structure as the left pressure plate mechanism.

8. The paper feeding device for a gluing machine according to claim 7, characterized in that: The left pressure plate mechanism also includes a left forming component, and the right pressure plate mechanism also includes a right forming component. The left forming component includes a left fixed seat, several sets of left adjusting slide plates, and a left forming blade. One end of the left adjusting slide plate is slidably engaged with the left fixed seat, and the other end is fixedly connected to the left forming blade. A left adjusting plate is connected above the left adjusting slide plate, and a left adjusting handwheel is rotatably connected to the left adjusting plate. The end of the left adjusting handwheel is threadedly connected to the left fixed seat. The rotation of the left adjusting handwheel drives the left adjusting slide plate to reciprocate along the axial direction. The right pressure plate mechanism has the same structure as the left pressure plate mechanism.

9. The paper feeding device for a gluing machine according to claim 7, characterized in that: The left pressure plate assembly includes a left pressure plate bracket, a left pressure plate mounting rod, and several left pressure plate support wheels rotatably mounted on the left pressure plate mounting rod. One end of the left pressure plate bracket is hinged to the left fixed plate, and the other end is hinged to the left pressure plate mounting rod. The left pressure plate support wheels can contact the left pressure plate belt.

10. The paper feeding device for a gluing machine according to claim 9, characterized in that: The left tensioning assembly includes a left tensioning bracket and several left tensioning rollers that rotate with the left tensioning bracket. The left tensioning bracket is hinged to the left fixed plate.

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