Paperboard creasing device

Abstract

The invention provides a paperboard creasing device, which belongs to the technical field of carton forming, and comprises: a frame, which is provided with a paperboard creasing channel; the cross beams are connected with the rack; the longitudinal creasing mechanisms are connected to one of the cross beams, the longitudinal creasing mechanisms are located on the two sides of the cross beam in the paperboard conveying direction, and each longitudinal creasing mechanism can move in the length direction of the cross beam; the oblique creasing mechanism is connected to the other cross beam in the multiple cross beams and comprises an oblique creasing wheel capable of rotating in the circumferential direction, and preset oblique creasing can be formed on the paperboard by adjusting the rotation angle of the oblique creasing wheel; the transverse creasing mechanism is connected to the cross beam where the oblique creasing mechanism is located, and the transverse creasing mechanism and the oblique creasing mechanism are located on the two sides of the cross beam in the paperboard conveying direction respectively. The device can adapt to paperboards formed by cartons of different shapes and specifications, and the use flexibility and the working efficiency of the device are improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of carton forming, and relates to a paperboard indentation device. BACKGROUND

[0002] When existing products are transported and sold, many paper boxes or cartons need to be used for packaging. In order to facilitate subsequent packaging use and make the folding area of the paper box or carton neat, an indentation needs to be pressed on the folding area of the paperboard. In the prior art, the paperboard folding is mostly pressed by a template, that is, a special pressing template is made for a specific carton. However, as the types of products increase, the types of paper boxes and cartons also increase. The traditional pressing process template has high production cost, and it takes a long time to replace the template, which cannot meet the production needs of the paper box or carton. Therefore, a paperboard indentation device capable of forming paper boxes of different shapes and specifications needs to be developed. SUMMARY

[0003] The purpose of the present application is to solve the above-mentioned problems existing in the prior art, and to provide a paperboard indentation device capable of forming paper boxes of different shapes and specifications.

[0004] The purpose of the present application can be achieved by the following technical scheme: a paperboard indentation device, comprising:

[0005] a rack, a paperboard indentation channel is arranged on the rack;

[0006] a plurality of cross beams, and each cross beam spans two ends of the paperboard indentation channel and is connected to the rack;

[0007] a plurality of longitudinal indentation mechanisms connected to one of the plurality of cross beams, and the plurality of longitudinal indentation mechanisms are separately arranged on both sides of the cross beam along the paperboard conveying direction, wherein each longitudinal indentation mechanism is movable along the length direction of the cross beam, and the longitudinal indentation mechanism comprises a longitudinal indentation wheel;

[0008] an oblique indentation mechanism connected to another cross beam of the plurality of cross beams, and the oblique indentation mechanism comprises an oblique indentation wheel rotatable in a circumferential direction, and by adjusting the rotation angle of the oblique indentation wheel, a preset oblique indentation with different inclination angles can be formed on the paperboard;

[0009] a transverse indentation mechanism connected to the cross beam where the oblique indentation mechanism is arranged, or connected to a third cross beam of the plurality of cross beams, wherein when the transverse indentation mechanism is connected to the cross beam where the oblique indentation mechanism is arranged, the transverse indentation mechanism and the oblique indentation mechanism are separately arranged on both sides of the cross beam along the paperboard conveying direction, and the transverse indentation mechanism comprises a transverse indentation wheel.

[0010] In the paperboard indentation device, the left side wall, the upper side wall, the right side wall and the lower side wall are sequentially arranged along the circumferential direction of the crossbeam of the longitudinal indentation mechanism, the left side wall and the right side wall are arranged on both sides of the crossbeam along the conveying direction of the paperboard, the longitudinal indentation mechanism is arranged on the left side wall and the right side wall, the longitudinal indentation mechanism arranged on the left side wall is the first longitudinal indentation mechanism, the longitudinal indentation mechanism arranged on the right side wall is the second longitudinal indentation mechanism, the first transmission part is arranged on the upper side wall, and the lower side wall is connected with the rack.

[0011] In the paperboard indentation device, the longitudinal indentation mechanism comprises an auxiliary indentation wheel, and the auxiliary indentation wheel is arranged side by side with the longitudinal indentation wheel, wherein the height difference exists between the plane where the lowest point of the auxiliary indentation wheel is located and the plane where the lowest point of the longitudinal indentation wheel is located.

[0012] In the paperboard indentation device, the left side wall, the upper side wall, the right side wall and the lower side wall are sequentially arranged along the circumferential direction of the crossbeam of the longitudinal indentation mechanism, the left side wall and the right side wall are arranged on both sides of the crossbeam along the conveying direction of the paperboard, the longitudinal indentation mechanism comprises an auxiliary indentation wheel, and the auxiliary indentation wheel is arranged side by side with the longitudinal indentation wheel, wherein the height difference exists between the plane where the lowest point of the auxiliary indentation wheel is located and the plane where the lowest point of the longitudinal indentation wheel is located.

[0013] In the paperboard indentation device, the left side wall, the upper side wall, the right side wall and the lower side wall are sequentially arranged along the circumferential direction of the crossbeam of the longitudinal indentation mechanism, the left side wall and the right side wall are arranged on both sides of the crossbeam along the conveying direction of the paperboard, the longitudinal indentation mechanism comprises an auxiliary indentation wheel, and the auxiliary indentation wheel is arranged side by side with the longitudinal indentation wheel, wherein the height difference exists between the plane where the lowest point of the auxiliary indentation wheel is located and the plane where the lowest point of the longitudinal indentation wheel is located.

[0014] The oblique indentation support;

[0015] The first driving unit is installed on the oblique indentation support, and the output end of the first driving unit is connected with the third transmission part;

[0016] The second driving unit is installed on the oblique indentation support, and the output end of the second driving unit is connected with the oblique indentation sliding seat, wherein the oblique indentation sliding seat is driven by the second driving unit to move up and down along the length direction perpendicular to the second crossbeam;

[0017] The third drive unit is mounted on the oblique indentation sliding seat, and the output end of the third drive unit is rotatably connected to the oblique indentation wheel, wherein the oblique indentation wheel is driven to rotate circumferentially by the third drive unit.

[0018] In the aforementioned cardboard creasing device, the third drive unit includes:

[0019] The second oblique indentation motor is mounted on the oblique indentation sliding seat via a rotary motor seat, and the output end of the second oblique indentation motor is connected to an active tension pulley.

[0020] An inclined pressure wheel seat is installed on an inclined indentation sliding seat;

[0021] An inclined pressure roller is inserted into an inclined pressure roller seat, and one end of the inclined pressure roller is connected to a driven tensioning pulley, while the other end of the inclined pressure roller is connected to an inclined indentation roller. The driven tensioning pulley and the active tensioning pulley are connected by a synchronous tensioning belt.

[0022] The aforementioned cardboard creasing device also includes a cutting mechanism, which is connected to the transverse creasing mechanism on the transverse pressure guide rail mounting plate. The transverse creasing wheel is located at one end of the transverse creasing mechanism, and a cutting blade is located at one end of the cutting mechanism. A second transmission unit is located at one of the other ends of the transverse creasing mechanism and the other end of the cutting mechanism. Through the cooperation between the second transmission unit and the first transmission unit, the transverse creasing wheel moves along a preset track on the cardboard while the cutting blade rotates along its axial direction. The distance between the transverse creasing wheel and the transverse pressure guide rail mounting plate is less than the distance between the cutting blade and the transverse pressure guide rail mounting plate.

[0023] In the above-mentioned cardboard creasing device, the second transmission unit and the cutting blade are respectively disposed at both ends of the cutting mechanism. The second transmission unit is rotated by cooperating with the first transmission unit. The second transmission unit and the cutting blade are connected by a transmission structure, so that the cutting mechanism moves along the length of the second crossbeam while the cutting blade is rotating.

[0024] In the above-mentioned cardboard creasing device, the transverse creasing mechanism further includes at least one pre-pressing wheel, which is located in the same vertical plane as the transverse creasing wheel, and the plane where the lowest point of the transverse creasing wheel is located is lower than the plane where the lowest point of the pre-pressing wheel is located.

[0025] In the aforementioned cardboard creasing device, the cutting mechanism includes:

[0026] A cutting motor is provided, and a swing arm is connected to the output end of the cutting motor, wherein the cutting blade is connected to the swing arm;

[0027] A swing arm structure is connected to the horizontal pressure guide rail mounting plate, and the output end of the swing arm structure is connected to the swing arm. The relative distance between the lowest point of the cutting blade and the cardboard is changed by the extension and retraction of the output end of the swing arm structure.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0029] The present invention provides a cardboard creasing device, which, by setting a longitudinal creasing module, an oblique creasing module and a transverse creasing module, can adapt to cardboard for forming cartons of different shapes and specifications without the need to change the creasing template, thereby demonstrating the flexibility of the equipment and improving work efficiency. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of a cardboard creasing device according to the present invention.

[0031] Figure 2 This is a schematic diagram of the active pressure roller assembly in a preferred embodiment of the present invention.

[0032] Figure 3 This is a schematic diagram of the longitudinal indentation mechanism in a preferred embodiment of the present invention.

[0033] Figure 4 This is a schematic diagram of the oblique indentation mechanism in a preferred embodiment of the present invention.

[0034] Figure 5 This is a partial schematic diagram of the third driving unit in a preferred embodiment of the present invention.

[0035] Figure 6 yes Figure 5 Another perspective view of the partial schematic diagram of the third drive unit shown.

[0036] Figure 7 yes Figure 6 The cross-sectional view shown is taken along the cutting line AA.

[0037] Figure 8 This is a schematic diagram of the transverse indentation module in a preferred embodiment of the present invention.

[0038] Figure 9 yes Figure 8 The diagram shows a structural schematic of the transverse indentation module from another perspective.

[0039] Figure 10 This is a schematic diagram of the mold-changing module in a preferred embodiment of the present invention.

[0040] Figure 11 yes Figure 10 Enlarged view of section A.

[0041] In the picture,

[0042] 100. Frame; 200. Paper feed roller;

[0043] 300. Crossbeam; 310. Left side wall; 320. Upper side wall; 330. Right side wall; 340. Lower side wall; 350. First transmission unit; 360. Second transmission unit; 370. Active pressure roller assembly; 371. Cylinder support; 372. Pressure roller cylinder; 373. Spindle support; 374. Pressure roller spindle; 375. Active pressure roller;

[0044] 400. Longitudinal indentation mechanism; 410. Longitudinal indentation wheel; 420. Longitudinal indentation bracket; 430. Longitudinal indentation motor; 440. Reducer mounting plate; 450. Longitudinal indentation cylinder; 451. Longitudinal indentation sliding seat; 460. Adjustable structure; 461. Adjustable plate; 462. Adjustable rod; 470. First locking unit; 471. First pressure wheel seat; 472. First pressure wheel rod; 480. Auxiliary wheel mounting plate; 490. Auxiliary pressure wheel;

[0045] 500. Angled indentation mechanism; 510. Angled indentation wheel; 520. Angled indentation bracket; 530. First drive unit; 531. First Angled indentation motor; 540. Second drive unit; 541. Angled indentation sliding seat; 542. Angled indentation cylinder; 550. Third drive unit; 551. Second Angled indentation motor; 552. Rotary motor seat; 553. Active tensioning pulley; 554. Angled pressure wheel seat; 555. Angled pressure wheel rod; 556. Driven tensioning pulley; 557. Synchronous tensioning belt; 558. Rotating shaft; 559. Bearing; 5510. Pulley sleeve; 560. Tensioning structure; 561. Tensioning block; 562. Tensioning rod;

[0046] 600. Lateral indentation mechanism; 610. Lateral indentation wheel; 620. Lateral indentation cylinder; 630. Lateral indentation sliding seat; 640. Second locking unit; 641. Second pressure wheel seat; 642. Second pressure wheel rod; 650. Pre-pressure wheel; 660. Pre-pressure wheel support;

[0047] 700. Horizontal pressure guide rail mounting plate;

[0048] 800. Cutting mechanism; 810. Cutting blade; 820. Cutting motor; 830. First transmission unit; 831. First driving pulley; 832. First driven pulley; 833. First synchronous belt; 834. First tension pulley; 840. Drive shaft; 850. Second transmission unit; 851. Second driving pulley; 852. Second driven pulley; 853. Second synchronous belt; 854. Second tension pulley; 860. Swing arm; 870. Cutting blade fixing shaft; 880. Fixed motor base; 890. Swing arm structure; 891. Swing arm cylinder; 892. Cylinder support shaft; 893. Support shaft base;

[0049] 900, Mold changing module; 910, Horizontal pressure bottom beam; 911, Station; 912, First shaft section; 913, Second shaft section; 914, Positioning post; 915, First limiting surface; 920, Forming die; 921, Forming groove; 930, Limiting block; 931, Second limiting surface. Detailed Implementation

[0050] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0051] like Figures 1 to 11 As shown, the present invention provides a cardboard creasing device, comprising:

[0052] The frame 100 is provided with a cardboard creasing channel, and the two ends of the cardboard creasing channel are the cardboard feed end and the cardboard discharge end, respectively.

[0053] The paper feeding module includes multiple paper feeding rollers 200 mounted on the frame 100 along the paperboard conveying direction, and the multiple paper feeding rollers 200 are located at the same horizontal height. The axial directions of any two adjacent paper feeding rollers 200 are parallel to each other, and the multiple paper feeding rollers 200 rotate synchronously.

[0054] Multiple crossbeams 300, with the length direction of the crossbeams 300 parallel to the axial direction of the paper feed roller 200. The crossbeams 300 span both ends of the cardboard creasing channel and are connected to the frame 100. The position of the crossbeams 300 corresponds to the position of the paper feed roller 200.

[0055] The longitudinal creasing module includes multiple longitudinal creasing mechanisms 400 connected to one of the multiple crossbeams 300. The multiple longitudinal creasing mechanisms 400 are located on both sides of the crossbeam 300 along the paperboard conveying direction. Each longitudinal creasing mechanism 400 can move along the length direction of the corresponding side of the crossbeam 300, and the relative distance between two adjacent longitudinal creasing mechanisms 400 on the same side can be adjusted arbitrarily, as can the relative distance between two adjacent longitudinal creasing mechanisms on opposite sides. Each longitudinal creasing mechanism 400 includes a longitudinal creasing wheel 410, and the direction of the longitudinal creasing formed by the longitudinal creasing wheel 410 on the paperboard is consistent with the conveying direction of the paperboard.

[0056] The oblique indentation module includes an oblique indentation mechanism 500 connected to one side of another crossbeam 300 among multiple crossbeams 300. The oblique indentation mechanism 500 includes an oblique indentation wheel 510 that can rotate circumferentially. By adjusting the rotation angle of the oblique indentation wheel 510, preset oblique indentations with different inclination angles can be formed on the cardboard.

[0057] The transverse creasing module includes a transverse creasing mechanism 600 connected to the other side of the crossbeam 300 where the oblique creasing mechanism 500 is located. The transverse creasing mechanism 600 includes a transverse creasing wheel 610, and the direction of the transverse creasing formed by the transverse creasing wheel 610 on the paperboard is perpendicular to the conveying direction of the paperboard.

[0058] It is worth noting that the cardboard creasing device may not simultaneously include longitudinal creasing modules, diagonal creasing modules, and transverse creasing modules. That is, these modules can be selectively installed as needed. For example, when the cardboard to be creasing only requires longitudinal and transverse creasing, the current cardboard creasing device may only include longitudinal and transverse creasing modules, without a diagonal creasing module. When the cardboard to be creasing has not only longitudinal and transverse creasing but also diagonal creasing, the current cardboard creasing device includes longitudinal, diagonal, and transverse creasing modules.

[0059] Furthermore, any two of the longitudinal indentation module, the oblique indentation module, and the transverse indentation module can be integrated. For example, as described in the above embodiment, the oblique indentation module and the transverse indentation module are integrated, meaning they share a single crossbeam 300. Similarly, the oblique indentation module can also be integrated with the longitudinal indentation module, in which case they share a single crossbeam 300. Alternatively, the longitudinal indentation module, the oblique indentation module, and the transverse indentation module can be independently configured, meaning there is no shared structure among them. For example, the longitudinal indentation mechanism 400 in the longitudinal indentation module is located on one of the multiple crossbeams 300, the oblique indentation mechanism 500 in the oblique indentation module is located on another crossbeam 300, and the transverse indentation mechanism 600 in the transverse indentation module is located on the third crossbeam 300.

[0060] To further explain, the longitudinal creasing module, the diagonal creasing module, and the transverse creasing module can be interchanged according to the order in which the creasing is formed on the paperboard. For example, when longitudinal creasing is required first, followed by diagonal creasing, and finally transverse creasing on the paperboard, the longitudinal creasing module, the diagonal creasing module, and the transverse creasing module are arranged sequentially along the paperboard's conveying direction; similarly, when longitudinal creasing is required first, followed by transverse creasing, and finally diagonal creasing on the paperboard, the longitudinal creasing module, the transverse creasing module, and the diagonal creasing module are arranged sequentially along the paperboard's conveying direction.

[0061] Therefore, as described above, the selection, layout, integration, or independence of the longitudinal, diagonal, and transverse creasing modules can all be adjusted according to the user's needs, greatly improving the flexibility of the cardboard creasing device.

[0062] The present invention provides a cardboard creasing device, which, by setting a longitudinal creasing module, an oblique creasing module and a transverse creasing module, can adapt to cardboard for forming cartons of different shapes and specifications without the need to change the creasing template, thereby demonstrating the flexibility of the equipment and improving work efficiency.

[0063] For ease of subsequent structural description, in this embodiment, the longitudinal creasing module, the oblique creasing module, and the transverse creasing module are arranged sequentially along the conveying direction of the paperboard, with the longitudinal creasing module set independently and the oblique creasing module and the transverse creasing module integrated.

[0064] Preferably, the crossbeam 300 equipped with the longitudinal creasing mechanism 400 is provided with a left side wall 310, an upper side wall 320, a right side wall 330, and a lower side wall 340 in sequence along the circumferential direction. The left side wall 310 and the right side wall 330 are located on both sides of the crossbeam 300 along the conveying direction of the cardboard. Multiple longitudinal creasing mechanisms 400 are provided on the left side wall 310 and the right side wall 330, and the longitudinal creasing mechanism 400 provided on the left side wall 310 is the first longitudinal creasing mechanism, and the longitudinal creasing mechanism 400 provided on the right side wall 330 is the second longitudinal creasing mechanism. A first transmission part 350 is provided on the upper side wall 320. The lower sidewall 340 is connected to the frame 100. The first longitudinal creasing mechanism includes a second transmission part 360 that cooperates with one side of the first transmission part 350, and a first longitudinal creasing wheel for forming a portion of the preset longitudinal creasings on the paperboard. The second longitudinal creasing mechanism includes a third transmission part that cooperates with the other side of the first transmission part 350, and a second longitudinal creasing wheel for forming another portion of the preset longitudinal creasings on the paperboard. The relative misalignment distance between the first longitudinal creasing wheel and the second longitudinal creasing wheel can be steplessly adjusted between zero and maximum preset values.

[0065] It is worth mentioning that in the prior art, there may be a situation where the lateral distance between two adjacent preset longitudinal creases is smaller than the distance between two adjacent parallel longitudinal crease rollers 410, and they are misaligned. In this case, if all the longitudinal crease rollers 410 are set on the same side, the cardboard needs to be moved back and forth once to complete the pressing of two adjacent misaligned preset longitudinal creases. However, in this embodiment, multiple longitudinal crease rollers 410 are set on both sides of the crossbeam 300. At this time, the longitudinal crease roller 410 on one side presses one of the two adjacent misaligned preset longitudinal creases, and the longitudinal crease roller 410 on the other side presses the other preset longitudinal crease. The pressing of two adjacent misaligned preset longitudinal creases can be completed in one direction, thereby improving the working efficiency of cardboard crease.

[0066] In addition, by dividing the multiple longitudinal creasing mechanisms 400 into two groups and setting them on both sides of the crossbeam 300, the problem of needing the cardboard to be formed in one reciprocating motion for two adjacent misaligned preset longitudinal creasing is solved on the one hand, and the length of the entire crossbeam 300 is shortened on the other hand, making the structure of the entire longitudinal creasing module more compact.

[0067] It is further pointed out that the first transmission part 350 is a rack, and the second transmission part 360 and the third transmission part are gears. Through the meshing between the rack and the gear, the position adjustment of multiple longitudinal indentation mechanisms 400 on the crossbeam 300 is realized, and the adjustment accuracy is high and the transmission is reliable.

[0068] Preferably, the longitudinal creasing mechanism 400 includes a T-shaped longitudinal creasing bracket 420, with a slider connected to the longitudinal creasing bracket 420; a longitudinal creasing motor 430, the output end of which is connected to a reducer, and the reducer is connected to the longitudinal creasing bracket 420 via a reducer mounting plate 440, wherein the output end of the reducer is connected to a gear; a longitudinal creasing cylinder 450, mounted on the longitudinal creasing bracket 420 and arranged side by side with the longitudinal creasing motor 430, and the output end of the longitudinal creasing cylinder 450 is connected to a longitudinal creasing wheel 410, thereby changing the relative distance between the longitudinal creasing wheel 410 and the cardboard to control whether the longitudinal creasing wheel 410 needs to work.

[0069] In other words, the longitudinal creasing rollers 410 in each longitudinal creasing mechanism 400 are independently controlled. Users can set whether the corresponding longitudinal creasing rollers 410 work as needed, thereby adapting to the pressing of cardboard in different formed cartons, which is flexible and reliable.

[0070] It is worth mentioning that, in order to ensure the reliability of the meshing between the gear and the rack, an adjustable structure 460 can be provided between the longitudinal indentation bracket 420 and the reducer mounting plate 440. The adjustable structure 460 includes an adjustable plate 461 connected to the longitudinal indentation bracket 420 by fasteners, and an adjustable rod 462 is inserted into the adjustable plate 461. One end of the adjustable rod 462 is screwed into the reducer mounting plate 440. By rotating the adjustable rod 462, the reducer mounting plate 440 is moved on the longitudinal indentation bracket 420.

[0071] It is worth noting that, since the reducer mounting plate 440 is provided with an adjustable hole, and the adjustable hole is an elongated hole, even if the reducer mounting plate 440 is moved slightly, the reliable connection between the reducer mounting plate 440 and the longitudinal indentation bracket 420 can still be guaranteed.

[0072] More preferably, the output end of the longitudinal indentation cylinder 450 is connected to a longitudinal indentation sliding seat 451, and a first locking unit 470 is provided between the longitudinal indentation sliding seat 451 and the longitudinal indentation wheel 410. The first locking unit 470 includes a first pressure wheel seat 471 connected to the longitudinal indentation sliding seat 451 and a first pressure wheel rod 472 inserted into the first pressure wheel seat 471. The longitudinal indentation wheel 410 is connected to one end of the first pressure wheel rod 472. The locking or unlocking between the first pressure wheel rod 472 and the first pressure wheel seat 471 is achieved by pressing the other end of the first pressure wheel rod 472.

[0073] It is worth mentioning that the first pressure roller rod 472 includes a rotating part and a rod part. The rotating part is inserted into the first pressure roller seat 471, and the rotating part is positioned on the first pressure roller seat 471 through the cooperation between the guide hole and the pin, which limits the circumferential freedom of the rotating part on the first pressure roller seat 471. The rod part and the rotating part are inserted into each other, and the rod part and the rotating part are locked or unlocked by pressing the rod part.

[0074] Preferably, an auxiliary wheel mounting plate 480 is connected to one side of the first pressure roller seat 471, and an auxiliary pressure roller 490 is connected to the auxiliary wheel mounting plate 480, wherein there is a height difference between the plane where the lowest point of the auxiliary pressure roller 490 is located and the plane where the lowest point of the longitudinal indentation roller 410 is located.

[0075] In this embodiment, by setting an auxiliary pressure roller 490, relative slippage between the cardboard and the longitudinal creasing roller 410 is avoided when the longitudinal creasing roller 410 presses on the cardboard surface, thereby improving the creasing quality. The auxiliary pressure roller 490 is generally made of polyurethane material, while the longitudinal creasing roller 410 is generally made of metal material, such as copper or iron.

[0076] Preferably, the crossbeam 300 connecting the oblique creasing mechanism 500 is also provided with a left side wall 310, an upper side wall 320, a right side wall 330 and a lower side wall 340 in sequence along the circumferential direction. The transverse creasing mechanism 600 is connected to the left side wall 310, and the oblique creasing mechanism 500 is connected to the right side wall 330. The same first transmission part 350 is provided on the upper side wall 320, and the lower side wall 340 is connected to the frame 100. The transverse creasing mechanism 600 includes a second transmission part 360 that cooperates with one side of the first transmission part 350 and a transverse creasing wheel 610 for forming a preset transverse creasing on the cardboard. The oblique creasing mechanism 500 includes a third transmission part that cooperates with the other side of the first transmission part 350 and an oblique creasing wheel 510 for forming a preset oblique creasing on the cardboard.

[0077] More preferably, the oblique indentation mechanism 500 includes: an oblique indentation bracket 520 arranged in a T-shape, with a slider disposed on the oblique indentation bracket 520; a first drive unit 530, mounted on the oblique indentation bracket 520, with its output end connected to a third transmission unit; a second drive unit 540, mounted on the oblique indentation bracket 520, with its output end provided with an oblique indentation sliding seat 541, wherein the oblique indentation sliding seat 541 is driven to move up and down along a length direction perpendicular to the second crossbeam 300 by the second drive unit 540; and a third drive unit 550, mounted on the oblique indentation sliding seat 541, with its output end rotatably connected to an oblique indentation wheel 510, wherein the oblique indentation wheel 510 is driven to rotate circumferentially by the third drive unit 550.

[0078] It is worth mentioning that when it is necessary to perform oblique creasing on the cardboard, the rotation angle of the oblique creasing wheel 510 is first adjusted by the third drive unit 550 so that the adjusted angle of the oblique creasing wheel 510 is consistent with the tilt angle of the pre-formed oblique creasing. Then, the rotation speed of the output end of the first drive unit 530 (i.e., the speed at which the oblique creasing wheel 510 moves along the length of the crossbeam 300) and the feeding speed of the cardboard are controlled at the same time so that the oblique creasing wheel 510 can move along the preset trajectory of the pre-formed oblique creasing to form oblique creasing.

[0079] In this embodiment, by changing the circumferential rotation angle of the oblique creasing wheel 510 and simultaneously controlling the lateral movement speed of the oblique creasing wheel 510 and the feeding speed of the cardboard, the oblique creasing wheel 510 can move along the preset trajectory of the pre-formed oblique creasing to form oblique creasing without having to reposition the cardboard angle, thereby improving the quality and efficiency of oblique creasing.

[0080] Preferably, the first drive unit 530 includes a first oblique indentation motor 531, and the output end of the first oblique indentation motor 531 is connected to a reducer. The reducer is connected to the oblique indentation bracket 520 through a reducer mounting plate 440, wherein the output end of the reducer is connected to a gear.

[0081] It is worth mentioning that an adjustable structure 460 is provided between the oblique indentation bracket 520 and the reducer mounting plate 440. The adjustable structure 460 has the same function and structure as the adjustable structure 460 in the longitudinal indentation mechanism 400, so it will not be described in detail here.

[0082] Preferably, the second drive unit 540 includes an oblique indentation cylinder 542 connected to the oblique indentation bracket 520. The oblique indentation cylinder 542 is arranged side by side with the first oblique indentation motor 531, wherein the output end of the oblique indentation cylinder 542 is connected to the oblique indentation sliding seat 541.

[0083] Preferably, the third drive unit 550 includes: a second oblique indentation motor 551, which is mounted on an oblique indentation sliding seat 541 via a rotary motor seat 552, and the output end of the second oblique indentation motor 551 is connected to an active tensioning pulley 553; an oblique pressure wheel seat 554, which is mounted on the oblique indentation sliding seat 541, and there is a height difference between the oblique pressure wheel seat 554 and the rotary motor seat 552; and an oblique pressure wheel rod 555, which is inserted into the oblique pressure wheel seat 554, and one end of the oblique pressure wheel rod 555 is connected to a driven tensioning pulley 556, and the other end of the oblique pressure wheel rod 555 is connected to an oblique indentation wheel 510, wherein the driven tensioning pulley 556 and the active tensioning pulley 553 are connected by a synchronous tensioning belt 557.

[0084] It is worth mentioning that the inclined pressure wheel rod 555 includes a rotating part and a rod part. The rotating part and the inclined pressure wheel seat 554 are rotatably engaged. The inclined indentation wheel 510 is connected to the rod part. The rod part and the rotating part are plugged into each other. The locking or unlocking of the two can be achieved by pressing.

[0085] More preferably, the third drive unit 550 includes a tensioning structure 560, which includes a tensioning block 561 connected to the inclined pressure wheel seat 554, and a tensioning rod 562 with one end screwed to the tensioning block 561 and the other end abutting against the rotary motor seat 552. The output end of the second inclined indentation motor 551 is connected to a rotating shaft 558, and a bearing 559 that engages with the rotary motor seat 552 is nested on the rotating shaft 558. The active tensioning pulley 553 is connected to the rotating shaft 558 through a pulley sleeve 5510.

[0086] It is worth mentioning that the rotary motor base 552 is connected to the oblique indentation sliding seat 541 by fasteners, and the rotary motor base 552 is provided with an elongated hole, which has the same function as the elongated hole provided on the reducer mounting plate. Therefore, when the tension rod 562 is rotated, the rotary motor base 552 can move slightly through the abutting engagement between the tension rod 562 and the rotary motor base 552. Since the rotary shaft 558 is engaged with the rotary motor base 552 through the bearing 559, and the active tensioning pulley 553 is connected to the rotary shaft 558 through the pulley sleeve 5510, when the rotary motor base 552 moves, it can drive the rotary shaft 558 and the active tensioning pulley 553 to move laterally, thereby synchronously tensioning the belt 557, and thus improving the accuracy of the rotation angle of the oblique indentation wheel 510.

[0087] Preferably, the transverse creasing module includes: a transverse creasing guide rail mounting plate 700, on which a transverse creasing mechanism 600 and a cutting mechanism 800 are arranged side by side. One end of the transverse creasing mechanism 600 is provided with a transverse creasing wheel 610, and one end of the cutting mechanism 800 is provided with a cutting blade 810. One of the other ends of the transverse creasing mechanism 600 and the other end of the cutting mechanism 800 is provided with a second transmission part 360. Through the cooperation between the second transmission part 360 and the first transmission part 350, the transverse creasing wheel 610 is moved along a preset track on the cardboard while the cutting blade 810 rotates along its axial direction. The distance between the transverse creasing wheel 610 and the transverse creasing guide rail mounting plate 700 is less than the distance between the cutting blade 810 and the transverse creasing guide rail mounting plate 700.

[0088] In this embodiment, the transverse creasing mechanism 600 and the cutting mechanism 800 are integrated on the transverse creasing guide rail mounting plate 700. Through the cooperation between the first transmission part 350 and the second transmission part 360, the transverse creasing mechanism 600 and the cutting mechanism 800 can not only complete the creasing process but also the cutting process while moving synchronously, thereby improving the processing efficiency of the cardboard.

[0089] It is worth mentioning that, since the distance between the transverse indentation wheel 610 and the transverse pressure guide mounting plate 700 is less than the distance between the cutting blade 810 and the transverse pressure guide mounting plate 700, that is, the transverse indentation wheel 610 and the cutting blade 810 are misaligned in the horizontal direction, the indentation trajectory formed by the transverse indentation wheel 610 does not coincide with the cutting trajectory formed by the cutting blade 810, thereby protecting the indentation from damage.

[0090] More preferably, the second transmission part 360 and the cutting blade 810 are respectively disposed at both ends of the cutting mechanism 800. The second transmission part 360 is rotated by cooperating with the first transmission part 350. The second transmission part 360 and the cutting blade 810 are connected by a transmission structure, so that the cutting mechanism 800 moves along the length direction of the second crossbeam 300 while the cutting blade 810 is in a rotating state.

[0091] In this embodiment, the second transmission unit 360 is disposed on the cutting mechanism 800, and the movement mode of the second transmission unit 360 is rotated. When the transverse creasing mechanism 600 and the cutting mechanism 800 move along the length direction of the second crossbeam 300, since the second transmission unit 360 and the cutting blade 810 are connected by a transmission structure, the rotational motion of the second transmission unit 360 is transmitted to the cutting blade 810 through the transmission structure, causing the cutting blade 810 to also rotate, so that the cutting blade 810 actively cuts the cardboard, avoids the formation of rough edges at the cut edge, and thus improves the cutting quality.

[0092] It is worth mentioning that the active cutting of the cardboard by the cutting blade 810 means that the cutting blade 810 rotates while moving along a preset cutting trajectory, at which time the cardboard is stationary; the passive cutting of the cardboard by the cutting blade 810 means that the cutting blade 810 only rotates circumferentially in place, while the cardboard moves according to the preset cutting trajectory, thereby completing the cutting of the cardboard.

[0093] Preferably, the transverse indentation mechanism 600 includes: a transverse indentation cylinder 620, which is connected to the transverse pressure guide rail mounting plate 700 through a cylinder top plate, and the output end of the transverse indentation cylinder 620 passes through the cylinder top plate and is connected to a transverse indentation sliding seat 630 at the output end; and a second locking unit 640, including: a second pressure roller seat 641, which is connected to the transverse indentation sliding seat 630; and a second pressure roller rod 642, which is inserted into the second pressure roller seat 641, and the transverse indentation wheel 610 is connected to one end of the second pressure roller rod 642.

[0094] It is worth mentioning that the second pressure roller rod 642 includes a rotating part and a rod part. The rotating part is inserted into the second pressure roller seat 641 and is positioned on the second pressure roller seat 641 through a guide hole and a pin, which limits the circumferential freedom of the rotating part on the second pressure roller seat 641. The rod part and the rotating part are inserted into each other, and the rod part and the rotating part are locked or unlocked by pressing the rod part.

[0095] More preferably, at least one pre-pressure wheel 650 is provided on the second pressure wheel seat 641, and the pre-pressure wheel 650 is connected to the second pressure wheel seat 641 through a pre-pressure wheel support 660. The transverse indentation wheel 610 and the pre-pressure wheel 650 are in the same vertical plane, and the plane where the lowest point of the transverse indentation wheel 610 is located is lower than the plane where the lowest point of the pre-pressure wheel 650 is located.

[0096] In this embodiment, by setting a pre-pressing roller 650, the pre-pressing of the indentation is achieved, so that when the transverse indentation roller 610 presses along the preset indentation trajectory, the bursting phenomenon is avoided, thereby improving the quality of the indentation.

[0097] It is further pointed out that there are two preload rollers 650, which are connected to the second pressure roller seat 641 through corresponding preload roller supports 660. The two preload rollers 650 are located on both sides of the transverse indentation roller 610. The two preload rollers 650 and the transverse indentation roller 610 are in the same vertical plane, and the lowest point of the two preload rollers 650 is in the same horizontal plane.

[0098] In this embodiment, by setting two pre-pressing rollers 650, the transverse indentation roller 610 will always pre-press before indentation, regardless of which direction it moves, thereby ensuring the quality of the indentation.

[0099] Preferably, the cutting mechanism 800 includes: a cutting motor 820, the output end of which is connected to a reducer, which is connected to the horizontal pressure guide rail mounting plate 700 via a reducer mounting plate 440, wherein a second transmission part 360 is connected to the output end of the reducer; a transmission structure including a first transmission unit 830, one end of which is connected to the output end of the reducer via a keyway and is coaxially arranged with the second transmission part 360; a transmission shaft 840, one end of which is connected to the other end of the first transmission unit 830 via a keyway, and the other end of which is rotatably connected to the swing arm 860; a second transmission unit 850, one end of which is connected to the end of the transmission shaft 840 near the swing arm 860 via a keyway, and the other end of which is connected to the cutting blade 810 via a cutter fixing shaft 870; and a fixed motor base 880, which is connected to the horizontal pressure guide rail mounting plate 700 and nested with the transmission shaft 840.

[0100] It is worth mentioning that the rotation of the output end of the cutting motor 820 causes the cutting blade 810 to rotate via the first transmission unit 830, the transmission shaft 840, the second transmission unit 850, and the cutting blade fixing shaft 870. At the same time, the rotation of the output end of the cutting motor 820 causes the second transmission part 360 to rotate. Through the meshing between the second transmission part 360 and the first transmission part 350, the horizontal pressure guide rail mounting plate 700, the horizontal indentation mechanism 600, and the cutting mechanism 800 move along the length direction of the second crossbeam 300.

[0101] More preferably, the first transmission unit 830 includes a first driving pulley 831 connected to the keyway of the reducer output end, a first driven pulley 832 connected to the keyway of the transmission shaft 840, and a first synchronous belt 833 connecting the first driving pulley 831 and the first driven pulley 832; the second transmission unit 850 includes a second driving pulley 851 connected to the keyway of the transmission shaft 840, a second driven pulley 852 connected to the keyway of the cutter fixing shaft 870, and a second synchronous belt 853 connecting the second driving pulley 851 and the second driven pulley 852.

[0102] It is worth mentioning that the first transmission unit 830 also includes a first tensioning pulley 834 connected to the transverse pressure guide rail mounting plate 700, and the first tensioning pulley 834 is located between the first driving pulley 831 and the first driven pulley 832, and is tangentially arranged with the first synchronous belt 833; the second transmission unit 850 also includes a second tensioning pulley 854 connected to the swing arm 860, and the second tensioning pulley 854 is located between the second driving pulley 851 and the second driven pulley 852, and is tangentially arranged with the second synchronous belt 853.

[0103] Preferably, a swing arm structure 890 is also connected to the horizontal pressure guide rail mounting plate 700, and the swing arm structure 890 includes a swing arm cylinder 891, a cylinder support shaft 892 connected to the output end of the swing arm cylinder 891, and a support seat 893 with one end connected to the cylinder support shaft 892 and the other end connected to the swing arm 860. The angle between the length direction of the swing arm 860 and the axial direction of the transmission shaft 840 is changed by the extension and retraction of the output end of the swing arm cylinder 891.

[0104] In this embodiment, by setting the swing arm structure 890, the tilt angle of the swing arm 860 in the vertical plane is changed, thereby changing the relative distance between the lowest point of the cutting blade 810 and the cardboard. The operator can choose whether the area needs to be cut as needed, so that creasing and cutting can be carried out simultaneously or asynchronously, thus making the operation more flexible.

[0105] Preferably, the paper feeding module includes multiple active pressure roller units connected to the crossbeam 300, and each active pressure roller unit is arranged vertically to the paper feeding roller 200. Each active pressure roller unit includes multiple active pressure roller groups 370, which are arranged along the length of the crossbeam 300. Each active pressure roller group 370 includes two opposing cylinder supports 371, and a pressure roller cylinder 372 is connected to each cylinder support 371. A spindle support 373 is connected to the output end of each pressure roller cylinder 372. The two spindle supports 373 are connected by a pressure roller spindle 374, and multiple active pressure rollers 375 are arranged at equal intervals on the pressure roller spindle 374.

[0106] In this embodiment, by setting multiple sets of active pressure roller groups 370, relative slippage of the longitudinal creasing mechanism 400, the oblique creasing mechanism 500, and the transverse creasing mechanism 600 when pressing the cardboard is further avoided, thereby improving the creasing effect. In addition, by distributing multiple active pressure rollers 375 in different active pressure roller groups 370, on the one hand, deformation caused by excessively long pressure roller spindles 374 is avoided, which would prevent some active pressure rollers 375 from forming good friction with the cardboard; on the other hand, it is convenient to replace one of the active pressure rollers 375 when it is damaged.

[0107] Preferably, the frame 100 is further provided with a mold changing module 900, and the position of the mold changing module 900 corresponds to the position of the transverse indentation mechanism 600, and is arranged vertically. The mold changing module 900 includes:

[0108] A transverse pressure beam 910 is located below the paperboard conveying direction, and multiple stations 911 are provided on the transverse pressure beam 910. The multiple stations 911 are arranged in a ring along the axial direction of the transverse pressure beam 910, wherein the length direction of the station 911 is consistent with the axial direction of the transverse pressure beam 910.

[0109] Multiple forming dies 920 correspond one-to-one with multiple workstations 911 and are installed on the corresponding workstations 911 by fasteners. Each forming die 920 is provided with a forming groove 921 that matches different transverse indentation wheels 610.

[0110] In use, the mold changing module 900 is located below the cardboard, and the creasing wheel is located above the cardboard. The protruding forming ridge on the transverse creasing wheel 610, the pre-formed creasing position on the cardboard, and the forming groove 921 on the forming die 920 correspond one-to-one. When the transverse creasing wheel 610 moves along the axial direction of the mold changing module 900, a clear creasing can be formed on the surface of the cardboard. The creasing will not cause the cardboard to burst during the forming process.

[0111] It is worth mentioning that when the creasing wheel applies downward pressure, if there is no forming die 920 under the cardboard, the area under the cardboard is empty or only supported by a soft conveyor belt / rubber pad. The force will concentrate in a localized area below the contact point of the creasing wheel, causing the cardboard core to be over-compressed or even crushed due to lack of support, resulting in "cardboard bursting." However, by setting a forming die 920 under the cardboard, with the forming groove 921 on the die corresponding to the forming protrusion on the creasing wheel, and both positioned on the upper and lower sides of the cardboard, the forming die 920 provides support for the cardboard. This ensures that the cardboard can only deform along a preset path when under pressure, thus limiting collapse in areas outside the preset path and preventing the cardboard from bursting, thereby improving the quality of the cardboard creasing.

[0112] In this embodiment, by providing support to the cardboard during creasing with a forming die 920, the cardboard is limited to deforming along a preset path under pressure, preventing collapse in areas outside the preset path, thus avoiding the cardboard from bursting and improving the quality of the cardboard creasing. Furthermore, the presence of multiple forming dies 920 allows for matching with different transverse creasing wheels 610, improving the versatility of the die-changing module 900.

[0113] Furthermore, it is pointed out that by rotating the transverse pressure bottom beam 910 circumferentially, different forming dies 920 are matched with different transverse indentation wheels 610 to achieve extrusion of different indentations.

[0114] In this embodiment, different forming dies 920 are switched by rotation, which is convenient, reliable and quick. The horizontal pressure beam 910 can be driven to rotate manually or by a motor.

[0115] More preferably, the transverse pressure bottom beam 910 is arranged in a stepped shape, including a first shaft section 912 located at both ends of the transverse pressure bottom beam 910 and a second shaft section 913 located in the middle of the transverse pressure bottom beam 910, and the cross section of the first shaft section 912 is circular, and the cross section of the second shaft section 913 is polygonal, wherein multiple workstations 911 are arranged on the second shaft section 913.

[0116] In this embodiment, the cross-section of the first shaft segment 912 is set to be circular to facilitate the circumferential rotation of the transverse pressure bottom beam 910, and the cross-section of the second shaft segment 913 is set to be polygonal. On the one hand, this reduces the processing technology of the matching forming die 920 and facilitates the installation of the forming die 920. On the other hand, when the indentation wheel presses the cardboard in the forward direction, the forming die 920 and the cardboard are in surface-to-surface contact, which can provide good support for the cardboard and further prevent the occurrence of crushing.

[0117] It is worth mentioning that a positioning part is provided on the bottom of the cavity. The positioning part includes a plurality of positioning posts 914 respectively located at each corner of the bottom of the cavity. When the forming die 920 is installed in the cavity, the two sides of the forming die 920 along the paperboard conveying direction abut against the corresponding positioning posts 914, thereby controlling the degree of freedom of the forming die 920 along the paperboard conveying direction.

[0118] Preferably, it further includes two limiting blocks 930, which are located at both ends of the transverse pressure bottom beam 910 along the axial direction of the transverse pressure bottom beam 910 and connected to the frame 100. A first limiting part is provided at the end of the transverse pressure bottom beam 910, and a second limiting part is provided on the limiting block 930. The circumferential degree of freedom of the transverse pressure bottom beam 910 is limited by the insertion and cooperation between the first limiting part and the second limiting part.

[0119] In this embodiment, the insertion and cooperation of the first limiting part and the second limiting part prevents the cardboard from rotating freely during the creasing stage, thereby improving the reliability of creasing.

[0120] More preferably, the first limiting portion includes at least a first limiting surface 915, and the second limiting portion includes at least a second limiting surface 931, wherein the first limiting surface 915 and the second limiting surface 931 are in contact.

[0121] More preferably, the first limiting part includes a plurality of first limiting surfaces 915, and the plurality of first limiting surfaces 915 are disposed on the first shaft segment 912 and arranged in a ring along the axial direction of the transverse pressure bottom beam 910. The number of the plurality of first limiting surfaces 915 is the same as the number of the plurality of workstations 911, and the plurality of first limiting surfaces 915 correspond one-to-one with the plurality of workstations 911. The second limiting part includes a U-shaped groove and a plurality of second limiting surfaces 931, wherein the plurality of second limiting surfaces 931 are located on both sides of the opening end of the U-shaped groove and the closed end of the U-shaped groove.

[0122] It is worth mentioning that when it is necessary to switch the forming die 920, firstly release the insertion engagement between the limiting block 930 and the horizontal pressure bottom beam 910, then rotate the horizontal pressure bottom beam 910 so that the required forming die 920 is set upwards, and then complete the insertion engagement between the limiting block 930 and the horizontal pressure bottom beam 910 again, thereby limiting the circumferential degree of freedom of the horizontal pressure bottom beam 910.

[0123] One method to release the plug-in connection between the limiting block 930 and the horizontal pressure bottom beam 910 is to directly remove the limiting block 930, and after the horizontal pressure bottom beam 910 is rotated into place, reinstall the limiting block 930 to complete the plug-in connection between the limiting block 930 and the horizontal pressure bottom beam 910.

Claims

1. A cardboard creasing device, characterized in that, include: The frame is equipped with cardboard creasing channels; Multiple crossbeams, each spanning both ends of the cardboard creasing channel and connected to the frame; Multiple longitudinal creasing mechanisms are connected to one of the multiple crossbeams, and the multiple longitudinal creasing mechanisms are located on both sides of the crossbeam along the paperboard conveying direction. Each longitudinal creasing mechanism can move along the length direction of the crossbeam, and the longitudinal creasing mechanism includes a longitudinal creasing wheel. A slanted indentation mechanism is connected to another crossbeam among multiple crossbeams, and the slanted indentation mechanism includes a circumferentially rotatable slanted indentation wheel. By adjusting the rotation angle of the slanted indentation wheel, preset slanted indentations with different tilt angles can be formed on the cardboard. A transverse creasing mechanism is connected to the crossbeam where the oblique creasing mechanism is located, or to the third crossbeam among multiple crossbeams. When the transverse creasing mechanism is connected to the crossbeam where the oblique creasing mechanism is located, the transverse creasing mechanism and the oblique creasing mechanism are located on opposite sides of the crossbeam along the paperboard conveying direction, and the transverse creasing mechanism includes a transverse creasing wheel.

2. The cardboard creasing device according to claim 1, characterized in that, A crossbeam equipped with longitudinal creasing mechanisms has a left side wall, an upper side wall, a right side wall, and a lower side wall arranged sequentially along the circumference. The left and right side walls are located on both sides of the crossbeam along the paperboard conveying direction. Multiple longitudinal creasing mechanisms are arranged on the left and right side walls. The longitudinal creasing mechanism on the left side wall is the first longitudinal creasing mechanism, and the longitudinal creasing mechanism on the right side wall is the second longitudinal creasing mechanism. A first transmission part is arranged on the upper side wall, and the lower side wall is connected to the frame. The first longitudinal creasing mechanism includes a second transmission part that cooperates with one side of the first transmission part, and a first longitudinal creasing wheel for forming a portion of the multiple preset longitudinal creasing lines on the paperboard. The second longitudinal creasing mechanism includes a third transmission part that cooperates with the other side of the first transmission part, and a second longitudinal creasing wheel for forming another portion of the multiple preset longitudinal creasing lines on the paperboard. The relative misalignment distance between the first and second longitudinal creasing wheels can be steplessly adjusted between zero and a maximum preset value.

3. The cardboard creasing device according to claim 1, characterized in that, The longitudinal indentation mechanism includes an auxiliary pressure roller, which is arranged side by side with the longitudinal indentation roller. There is a height difference between the plane where the lowest point of the auxiliary pressure roller is located and the plane where the lowest point of the longitudinal indentation roller is located.

4. The cardboard creasing device according to claim 2, characterized in that, The crossbeam connecting the oblique creasing mechanism is also provided with a left side wall, an upper side wall, a right side wall, and a lower side wall in sequence along the circumferential direction. The transverse creasing mechanism is connected to the left side wall, and the oblique creasing mechanism is connected to the right side wall. The same first transmission part is provided on the upper side wall, and the lower side wall is connected to the frame. The transverse creasing mechanism includes a second transmission part that cooperates with one side of the first transmission part and a transverse creasing wheel for forming a preset transverse creasing on the cardboard. The oblique creasing mechanism includes a third transmission part that cooperates with the other side of the first transmission part and an oblique creasing wheel for forming a preset oblique creasing on the cardboard.

5. The cardboard creasing device according to claim 4, characterized in that, The oblique indentation mechanism includes: Angled indentation bracket; The first drive unit is mounted on the inclined indentation bracket, and the output end of the first drive unit is connected to the third transmission unit; The second drive unit is mounted on the inclined indentation bracket, and the output end of the second drive unit is connected to the inclined indentation sliding seat. The inclined indentation sliding seat is driven to move up and down along the length direction perpendicular to the second crossbeam by the second drive unit. The third drive unit is mounted on the oblique indentation sliding seat, and the output end of the third drive unit is rotatably connected to the oblique indentation wheel, wherein the oblique indentation wheel is driven to rotate circumferentially by the third drive unit.

6. The cardboard creasing device according to claim 5, characterized in that, The third drive unit includes: The second oblique indentation motor is mounted on the oblique indentation sliding seat via a rotary motor seat, and the output end of the second oblique indentation motor is connected to an active tension pulley. An inclined pressure wheel seat is installed on an inclined indentation sliding seat; An inclined pressure roller is inserted into an inclined pressure roller seat, and one end of the inclined pressure roller is connected to a driven tensioning pulley, while the other end of the inclined pressure roller is connected to an inclined indentation roller. The driven tensioning pulley and the active tensioning pulley are connected by a synchronous tensioning belt.

7. The cardboard creasing device according to claim 4, characterized in that, It also includes a cutting mechanism, which is connected to the transverse creasing mechanism on the transverse pressure guide rail mounting plate. The transverse creasing wheel is located at one end of the transverse creasing mechanism, and a cutting blade is located at one end of the cutting mechanism. A second transmission unit is located at one of the other ends of the transverse creasing mechanism and the other end of the cutting mechanism. Through the cooperation between the second transmission unit and the first transmission unit, the transverse creasing wheel moves along a preset track on the cardboard while the cutting blade rotates along its axial direction. The distance between the transverse creasing wheel and the transverse pressure guide rail mounting plate is less than the distance between the cutting blade and the transverse pressure guide rail mounting plate.

8. The cardboard creasing device according to claim 7, characterized in that, The second transmission unit and the cutting blade are respectively located at both ends of the cutting mechanism. The second transmission unit, through cooperation with the first transmission unit, causes its motion state to be rotated. The second transmission unit and the cutting blade are connected through a transmission structure, so that the cutting mechanism moves along the length of the second crossbeam while the cutting blade is rotating.

9. The cardboard creasing device according to claim 1, characterized in that, The transverse indentation mechanism also includes at least one pre-pressure wheel, which is located in the same vertical plane as the transverse indentation wheel, and the plane where the lowest point of the transverse indentation wheel is located is lower than the plane where the lowest point of the pre-pressure wheel is located.

10. The cardboard creasing device according to claim 7, characterized in that, The cutting mechanism includes: A cutting motor is provided, and a swing arm is connected to the output end of the cutting motor, wherein the cutting blade is connected to the swing arm; A swing arm structure is connected to the horizontal pressure guide rail mounting plate, and the output end of the swing arm structure is connected to the swing arm. The relative distance between the lowest point of the cutting blade and the cardboard is changed by the extension and retraction of the output end of the swing arm structure.

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