Three-module displacement point glue machine

Abstract

The utility model belongs to paperboard point gum technical field, specifically disclose a three module displacement point gum machine, including frame, conveyer belt, three module mechanism and point gum unit, conveyer belt installs on the frame, three module mechanism installs on the frame, and three module mechanism can drive point gum unit to move in X axle, Y axle and Z axle direction and carry out point gum, at least one group of rectification unit is installed on the frame, and the number of each rectification unit is two, and two rectification units are symmetrically installed on the frame on conveyer belt both sides respectively, rectification unit includes mounting panel and rectification board, mounting panel is connected on the frame, rectification board is along perpendicular to the transmission direction of conveyer belt and mounting panel sliding connection, and rectification board's bottom has the gap between conveyer belt, and paperboard can be located between two rectification boards. The utility model can play the role of rectification to paperboard in the process of conveyer belt transmission, thereby improve the precision of point gum, and then improve the quality of product.

Description

Technical Field

[0001] This utility model relates to the field of cardboard dispensing technology, specifically to a three-module displacement dispensing machine. Background Technology

[0002] In the packaging industry, corrugated boxes are a common form of packaging, widely used due to their convenient folding method and good protective performance. The traditional manufacturing process for corrugated boxes involves folding cardboard into the shape of a corrugated box, inserting a lower tray inside the folded box and gluing it in place, and then gluing an upper tray to the flap of the box.

[0003] In the existing technology, when bonding the lower tray inside the airplane box and the upper tray inside the airplane box flap, the method of manual glue application is usually adopted. That is, four dots and a rectangular glue area are applied on a piece of cardboard. After the cardboard is folded into a box shape, the lower tray is fixed by the glue at the four dots and the upper tray is fixed by the glue at the rectangular glue area.

[0004] However, this traditional dispensing method has many drawbacks. Manual dispensing is inefficient and cannot meet the needs of large-scale production. Manual operation makes it difficult to guarantee the precision of the dispensing location and the consistency of the adhesive application, which may lead to weak adhesion of the packaging boxes, affecting packaging quality, and even causing problems such as delamination during subsequent use, reducing the product's protective performance. Furthermore, manual dispensing increases labor and management costs, and the evaporation of the adhesive may pose certain health hazards to the operators.

[0005] Currently, a three-module dispensing machine is used for dispensing operations. By using a three-module mechanism (which can move along the X, Y, and Z axes) to drive the dispensing unit, four-point dispensing and rectangular frame dispensing operations are performed. After the cardboard is conveyed to the designated dispensing position by a conveyor belt, it is then conveyed to the next process for folding and installation of upper and lower trays. This effectively improves operational efficiency and saves labor costs.

[0006] However, during the conveyor belt transport process, cardboard may slip or deviate due to conveyor belt surface wear or external interference. This can prevent the cardboard from accurately reaching the designated glue dispensing position, thus affecting glue dispensing accuracy. It can also adversely affect subsequent folding and installation processes, ultimately impacting product quality. Utility Model Content

[0007] This utility model provides a three-module displacement dispensing machine, which aims to correct the deviation of the cardboard during the conveyor belt process, thereby improving the dispensing accuracy and thus improving the product quality.

[0008] This utility model is achieved through the following technical solution: a three-module displacement dispensing machine, including a frame, a conveyor belt, a three-module mechanism, and a dispensing unit. The conveyor belt is installed on the frame, the three-module mechanism is installed on the frame, and the three-module mechanism can drive the dispensing unit to move in the X-axis, Y-axis, and Z-axis directions to perform dispensing. At least one set of correction units is installed on the frame, and each set of correction units consists of two units. The two correction units are symmetrically installed on the frame on both sides of the conveyor belt. The correction units can guide the cardboard before it enters the three-module mechanism.

[0009] The correction unit includes a mounting plate and a correction plate. The mounting plate is connected to the frame, and the correction plate is slidably connected to the mounting plate along a conveying direction perpendicular to the conveyor belt. There is a gap between the bottom of the correction plate and the conveyor belt, allowing the cardboard to be positioned between the two correction plates.

[0010] Compared with existing technologies, this solution has the following advantages and beneficial effects:

[0011] In this solution, by symmetrically setting correction units before the cardboard enters the three-module mechanism, the lateral offset of the cardboard during conveyor belt transmission can be corrected in advance. This avoids misalignment of the dispensing position when the three-module mechanism drives the dispensing unit to move due to the cardboard position deviation. It provides a preliminary position reference for the subsequent precise dispensing in the X, Y, and Z axes, indirectly improving the overall dispensing accuracy and thus improving the quality of the product.

[0012] In addition, the correction plate is slidably connected to the mounting plate along the direction perpendicular to the conveyor belt. By adjusting the distance between the correction plates on both sides, it can adapt to the conveying needs of cardboard of different widths. There is no need to replace the special guide structure for different sizes of cardboard, which expands the applicator's adaptability to a variety of workpieces and reduces the cost of equipment replacement and adjustment.

[0013] A gap is reserved between the bottom of the alignment plate and the conveyor belt to avoid direct contact between the alignment plate and the conveyor belt, which would cause wear. At the same time, the alignment plates on both sides only limit the cardboard deviation by guiding it from the side, without directly squeezing the cardboard surface. This can reduce the risk of deformation and scratches of the cardboard during the transmission and alignment process, and ensure the integrity of the cardboard before processing.

[0014] Furthermore, the three-module mechanism is provided in two groups, and the two groups of the three-module mechanism are distributed at intervals along the conveying direction of the conveyor belt.

[0015] Beneficial effects: The two sets of three-module mechanisms can simultaneously perform four-point glue application and rectangular frame glue application on the cardboard, which can improve the overall glue application efficiency.

[0016] Furthermore, the correction unit is provided in two sets, one set of the correction unit is located between the two sets of the three-module mechanism, and the other set of the correction unit is located on the side where the cardboard first enters the three-module mechanism.

[0017] Beneficial effects: The two sets of correction units form a dual guiding mechanism. The correction unit located at the first entry end of the cardboard first corrects the lateral offset of the cardboard during initial transmission, providing basic positioning for entering the first set of three-module mechanisms. The correction unit located between the two sets of three-module mechanisms can correct the positional offset that may occur after the cardboard has been processed by the first set of mechanisms (or during transmission), ensuring that the cardboard maintains a precise posture when entering the second set of three-module mechanisms, avoiding the accumulation of offset that leads to subsequent glue dispensing misalignment, and further improving the overall glue dispensing accuracy.

[0018] Furthermore, a set of correction units located between the two sets of three-module mechanisms can restrict the paperboard during the dispensing process of the three-module mechanism, ensuring the stability of the paperboard and the accuracy of the dispensing position during the dispensing process.

[0019] Furthermore, the mounting plate is L-shaped, and one side of the mounting plate is perpendicularly connected to the frame, while the other side of the mounting plate is located above the conveyor belt and extends towards the symmetrical line of the conveyor belt. The mounting plate has an elongated hole, which is perpendicular to the conveying direction of the conveyor belt.

[0020] The top of the correction plate is connected to a sliding rod, and the upper part of the sliding rod is connected to a limiting plate. The limiting plate abuts against the top of the mounting plate. The upper part of the sliding rod is threaded with a fastener. Tightening the fastener can restrict the sliding rod from sliding along the elongated hole.

[0021] Beneficial effects: The mounting plate is designed in an L-shape, with its vertical side firmly connected to the frame and its horizontal side extending above the conveyor belt. This eliminates the need for additional complex support structures below or on both sides of the conveyor belt, allowing the alignment plate to be suspended above the conveyor belt. This effectively utilizes the space above the conveyor belt and reduces the obstruction of the transmission path. At the same time, the L-shaped structure has its own right-angle support characteristics, which provides more stable lateral support for the alignment plate compared to a straight plate structure, preventing the alignment plate from tilting or shaking due to the force exerted by the cardboard guide.

[0022] In addition, in this solution, the elongated hole is perpendicular to the conveyor belt's conveying direction. Combined with the sliding cooperation between the slide rod and the elongated hole, the correction plate can be directly driven to move smoothly in the transverse direction (perpendicular to the conveying direction), and the distance between the correction plates on both sides can be quickly adjusted to adapt to different widths of cardboard. The limiting plate abuts against the top of the mounting plate to prevent the slide rod from moving down. Tightening the fasteners will lock the slide rod in the elongated hole, ensuring that the position of the correction plate does not shift after adjustment, thus balancing the convenience of adjustment and the stability of positioning.

[0023] When adjusting the spacing of the alignment plates, simply loosen the fasteners, push the slide bar along the elongated hole to the target position, and then tighten it again. There is no need to disassemble the mounting plate or alignment plate, making the operation simple.

[0024] Furthermore, the mounting plate has two elongated holes, and the sliding rods are connected to both sides of the correction plate. The two sliding rods are slidably engaged with the two elongated holes respectively.

[0025] Beneficial effects: The two slide rods and the two elongated holes slide in a one-to-one correspondence to form a two-point support structure. Compared with single slide rod support, it can limit the rotation or tilting of the correction plate around the slide rod during the lateral adjustment process, ensuring that the correction plate always maintains a parallel posture with the conveyor belt, and avoiding cardboard guide jamming or reduced correction accuracy due to the tilt of the correction plate.

[0026] Furthermore, the front side of each of the correction plates in the two symmetrically arranged correction units is connected to a guide plate, and the two guide plates are distributed in a figure-eight shape.

[0027] Beneficial effects: In this solution, the two guide plates are arranged in a figure-eight shape. The distance between their inlet ends is greater than the width of the cardboard, while the distance between their outlet ends (near the alignment plate) matches the alignment plate, forming a wide-in, narrow-out guide channel. During manual or automatic feeding, there is no need for precise alignment of the alignment plate distance. The cardboard can be naturally guided between the two alignment plates by the figure-eight guide plates, greatly reducing the alignment requirements of the feeding operation and improving feeding efficiency. It is especially suitable for batch continuous feeding scenarios.

[0028] The two guide plates form a funnel-shaped structure. When the thin cardboard enters, it will first contact the inclined surface, and its position will be slowly adjusted by the progressive guiding force of the inclined surface, avoiding wrinkles or jamming caused by direct collision with the horizontally set correction plate.

[0029] Furthermore, the included angle between the two guide plates is 30°-60°.

[0030] Beneficial effects: An angle range of 30°-60° ensures that the guide plate has sufficient width at the entrance to facilitate the rapid introduction of cardboard, while avoiding excessive tilting of the guide plate and excessively short guiding path due to an excessively large angle. This prevents the cardboard from being unable to complete sufficient gradual posture correction before entering the correction plate, thereby reducing problems such as jamming or untimely guidance and achieving a balance between efficient introduction and stable correction.

[0031] Furthermore, the correction plate is L-shaped, with one side of the correction plate perpendicular to the conveyor belt and the other side of the correction plate extending in the direction of the symmetry line of the conveyor belt.

[0032] Beneficial effects: The vertical side of the L-shaped correction plate is set perpendicular to the conveyor belt, which can directly fit the side of the cardboard to achieve precise lateral guidance and limit the left and right deviation of the cardboard during the transmission process; the other side extending to the symmetrical line of the conveyor belt can reserve installation space for subsequent integration of pressing components and other functions, thus optimizing the structural compactness.

[0033] Furthermore, a telescopic cylinder is installed on the top of the correction plate, and the output shaft of the telescopic cylinder can extend downward to press the cardboard.

[0034] Beneficial effects: The telescopic cylinder is integrated into the top of the L-shaped correction plate, eliminating the need for a separate clamping bracket and enabling the correction unit to perform both guiding and clamping functions. Once the cardboard is guided to the dispensing position by the correction plate, the telescopic cylinder's output shaft extends downwards to directly clamp the cardboard, preventing displacement during dispensing due to conveyor belt vibration or the movement of the three-module mechanism. This ensures precise and error-free dispensing dot placement when the dispensing unit moves along the X, Y, and Z axes, improving the stability of dispensing quality.

[0035] Furthermore, a flexible pressure plate is connected to the end of the output shaft of the telescopic cylinder.

[0036] Beneficial effects: In this solution, flexible pressure plates such as silicone pads and rubber pads can be added to the end of the output shaft, which can further buffer the clamping force, protect the integrity of the cardboard surface, and avoid damage to the cardboard. Attached Figure Description

[0037] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0038] Figure 1 This is a schematic diagram of the structure of an embodiment of the three-module displacement dispensing machine of this utility model;

[0039] Figure 2 for Figure 1 A magnified view of a section at point B in the middle;

[0040] Figure 3 This is a partial cross-sectional view in the front view direction of an embodiment of a three-module displacement dispensing machine according to the present invention;

[0041] Figure 4 This is a partial top view of an embodiment of a three-module displacement dispensing machine according to the present invention;

[0042] Figure 5 This is a partial sectional view in the main view direction of another embodiment of the three-module displacement dispensing machine of this utility model.

[0043] The attached diagram shows the markings and corresponding component names:

[0044] 1. Frame; 2. Conveyor belt; 3. Three-module mechanism; 4. Dispensing head;

[0045] Correction unit 5, mounting plate 501, correction plate 502, elongated hole 503, slide rod 504, limit plate 505, fastening nut 506, guide plate 507;

[0046] 6. Cardboard, 7. Telescopic cylinder, 701. Flexible pressure plate. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0048] As one embodiment of this application, such as Figure 1 As shown, this embodiment provides a three-module displacement dispensing machine, including a frame 1, a conveyor belt 2, a three-module mechanism 3, and a dispensing unit. The conveyor belt 2 is mounted on the frame 1 and is used to transport the cardboard 6 to the next process. The three-module mechanism 3 is mounted on the frame 1, and in this embodiment, the three-module mechanism 3 can drive the dispensing unit to move in the X, Y, and Z axes to perform dispensing. The dispensing unit includes a dispensing head 4, a glue supply cylinder, etc. The three-module mechanism 3 drives the dispensing head 4 to move in the X / Y / Z axes, thereby realizing the dispensing operation. The three-module mechanism 3 is a combination of three independently driven modules (usually corresponding to the X, Y, and Z coordinate axes) to realize the precise movement and positioning of the execution component (dispensing unit) in three-dimensional space.

[0049] In this embodiment, the three-module mechanism 3 is similar to the XYZ three-axis motion platform in the prior art in terms of technical principle and functional logic, such as the motion mechanism of industrial three-axis dispensing machine and the motion mechanism of small CNC engraving machine. It generally adopts a three-module combination structure of "X-axis (lateral movement) + Y-axis (longitudinal movement, often equipped with a worktable or bracket) + Z-axis (vertical lifting). Through the coordinated drive of the three modules, the precise control of the glue dot position in the plane (XY) and height (Z) can be achieved.

[0050] In this embodiment, at least one set of correction units 5 are installed on the frame 1. Each set of correction units 5 consists of two units. The two correction units 5 are symmetrically installed on the frame 1 on both sides of the conveyor belt 2. The correction units 5 can correct and guide the cardboard 6 before it enters the three-module mechanism 3.

[0051] The correction unit 5 in this embodiment includes a mounting plate 501 and a correction plate 502. The mounting plate 501 is connected to the frame 1. In this embodiment, the mounting plate 501 and the frame 1 are connected by bolts or welding. The correction plate 502 is slidably connected to the mounting plate 501 along the conveying direction perpendicular to the conveyor belt 2, and there is a gap between the bottom of the correction plate 502 and the conveyor belt 2. In this embodiment, the gap between the bottom and the conveyor belt 2 is 0.3-0.5mm. The cardboard 6 can be located between the two correction plates 502. In this way, the cardboard 6 can pass through the correction plates 502 under the conveying action of the conveyor belt 2, thereby ensuring that the cardboard 6 enters the three-module mechanism 3 flat for glue dispensing operation and ensuring the accuracy of the glue dispensing position of the cardboard 6.

[0052] In one embodiment, such as Figure 1 As shown, in this embodiment, two sets of three-module mechanisms 3 are set up. The two sets of three-module mechanisms 3 are distributed at intervals along the conveying direction of the conveyor belt 2. When the cardboard 6 moves to the position between the two sets of three-module mechanisms 3, the two sets of three-module mechanisms 3 will drive the two dispensing heads 4 to move in three dimensions respectively, and perform four-point dispensing operation and rectangular frame dispensing operation on the cardboard 6 at the same time, thereby improving the overall dispensing efficiency.

[0053] In one embodiment, such as Figure 1 As shown, the correction unit 5 in this embodiment has two sets. One set of correction unit 5 is located between the two sets of three-module mechanisms 3, and the other set of correction unit 5 is located on the side where the cardboard 6 first enters the three-module mechanism 3. In this way, the correction unit 5 can further ensure the accuracy of the cardboard 6 at the glue dispensing position, avoid deviation that would affect the accuracy of glue dispensing, and thus improve the quality of the airplane box product formed by subsequent folding.

[0054] In one embodiment, such as Figure 1 , Figure 2 and Figure 3 As shown, the mounting plate 501 is L-shaped, and one side of the mounting plate 501 is perpendicularly connected to the frame 1. The other side of the mounting plate 501 is located above the conveyor belt 2 and extends in the direction of the symmetry line of the conveyor belt 2. In this embodiment, the mounting plate 501 is welded or bolted to the frame 1. The mounting plate 501 has an elongated hole 503, which is perpendicular to the conveying direction of the conveyor belt 2.

[0055] The top of the alignment plate 502 is connected to a slide rod 504. In this embodiment, the slide rod 504 is threaded or welded to the alignment plate 502. Figure 2 As shown, a limiting plate 505 is connected to the upper part of the slide rod 504. The limiting plate 505 abuts against the top of the mounting plate 501. The diameter of the limiting plate 505 is larger than the width of the elongated hole 503, thereby limiting the slide rod 504 and preventing it from sliding downwards and falling. Figure 3As shown, the upper part of the slide bar 504 is threaded with a fastener. Tightening the fastener can restrict the slide bar 504 from sliding along the elongated hole 503. In this embodiment, the fastener is a fastening nut 506.

[0056] In this embodiment, by loosening the fastening nut 506, the slide rod 504 can slide along the elongated hole 503, thereby adjusting the position of the correction plate 502 and thus adapting to the correction guidance of cardboard 6 of different sizes.

[0057] In one embodiment, such as Figure 1 As shown, there are two elongated holes 503 on the mounting plate 501. Slide rods 504 are connected to both sides of the correction plate 502. The two slide rods 504 slide in cooperation with the two elongated holes 503 respectively, which can further ensure the stability of the correction plate 502.

[0058] In one embodiment, such as Figure 4 As shown, the front sides of the correction plates 502 in the two symmetrically arranged correction units 5 are connected to guide plates 507. The two guide plates 507 are distributed in a figure-eight shape, and the included angle between the two guide plates 507 in this embodiment is 30°-60°.

[0059] The guide plate 507 and the correction plate 502 are integrally formed, welded, or screwed together, forming a flared structure. When the cardboard 6 enters, it first contacts the inclined surface, and its position is slowly adjusted by the progressive guiding force of the inclined surface. This avoids wrinkling or jamming due to direct collision with the horizontally set correction plate 502, and makes the process of the cardboard 6 entering the two correction plates 502 smoother.

[0060] In one embodiment, such as Figure 5 As shown, the correction plate 502 is L-shaped. One side of the correction plate 502 is perpendicular to the conveyor belt 2, and the other side of the correction plate 502 extends in the direction of the symmetry line of the conveyor belt 2. This can strengthen the strength of the correction plate 502 and increase the contact area between the correction plate 502 and the mounting plate 501, thereby improving the stability of the movement of the correction plate 502 when adjusting it.

[0061] In one embodiment, such as Figure 5 As shown, a telescopic cylinder 7 is installed on the top of the correction plate 502. The output shaft of the telescopic cylinder 7 can extend downward to press the cardboard 6. In this embodiment, the telescopic cylinder 7 is installed on the correction plate 502 in the correction unit 5 located between the two sets of three-module mechanisms 3.

[0062] In this embodiment, the cylinder body of the telescopic cylinder 7 can be located inside the elongated hole 503, and the telescopic cylinder 7 can move with the movement of the correction plate 502, thereby facilitating the pressing and fixing of both sides of the cardboard 6 of different sizes, ensuring the stability of the cardboard 6 during the glue dispensing process, and preventing the cardboard 6 from moving during the glue dispensing process, which would affect the glue dispensing effect and accuracy.

[0063] In one embodiment, such as Figure 5 As shown, in this embodiment, a flexible pressure plate 701 is connected to the end of the output shaft of the telescopic cylinder 7. In this embodiment, the flexible pressure plate 701 is a plate-shaped structure such as a rubber pad or silicone pad. The flexible pressure plate 701 is bonded and fixed to the end of the output shaft of the telescopic rod. In this way, when the output shaft extends downward and presses the cardboard 6, the flexible pressure plate 701 can play a buffering role and avoid damage to the surface of the cardboard 6.

[0064] The specific implementation process is as follows:

[0065] Cardboard 6 enters conveyor belt 2 from the inlet end and first contacts the guide plates 507 arranged in a V-shape. The V-shape structure guides the cardboard 6 through a gradual wide-in, narrow-out approach, correcting the initial offset of cardboard 6 and allowing it to smoothly enter the first set of correction units 5. The L-shaped correction plates 502 on both sides limit the cardboard 6 laterally through their vertical sides, and the 0.3-0.5mm gap between the bottom and the conveyor belt 2 ensures smooth transmission. At this time, the spacing of the correction plates 502 has been pre-adjusted according to the width of cardboard 6 (by sliding along the elongated holes 503 of the mounting plate 501 via the slide rod 504 and being locked by fasteners).

[0066] Initial alignment and first set of glue dispensing: After fine-tuning by the first set of alignment units 5, the cardboard 6 reaches the glue dispensing area between the two sets of three-module mechanisms 3 and is positioned between the two alignment units 5 of the second set. At this point, the conveyor belt 2 is slowed down and stopped (in practice, an infrared sensor can be installed on the frame 1 to detect the cardboard 6's position, and combined with the existing controller, the start and stop of the conveyor belt 2 can be automatically controlled). The telescopic cylinder 7 at the top of the alignment plate 502 on the second set of alignment units 5 drives the pressure plate to extend downwards, pressing and fixing the cardboard 6. The two sets of three-module mechanisms 3 (XY three-axis motion platforms) simultaneously drive the glue dispensing units on their respective mechanisms to move, completing the glue dispensing of specific areas of the cardboard 6 according to the preset program (such as four-point glue dispensing and rectangular frame glue dispensing). During the glue dispensing process, the pressure plate continues to press tightly to prevent displacement.

[0067] After the glue is applied, the telescopic cylinder 7 retracts the pressure plate, and the conveyor belt 2 starts to transport the cardboard 6 to the next process, such as the process of folding paper boxes.

[0068] If it is necessary to replace the cardboard 6 with a different specification, simply loosen the fastening nut 506 and move the slide bar 504 to adjust the spacing of the correction plates 502 on the two correction units 5, without having to adjust the overall equipment structure.

[0069] It should be noted that the above description of the disclosed embodiments enables those skilled in the art to implement or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A three-module displacement dispensing machine, comprising a frame, a conveyor belt, a three-module mechanism, and a dispensing unit, wherein the conveyor belt is mounted on the frame, the three-module mechanism is mounted on the frame, and the three-module mechanism is capable of driving the dispensing unit to move in the X-axis, Y-axis, and Z-axis directions for dispensing, characterized in that, At least one set of correction units is installed on the frame. Each set of correction units consists of two units, and the two correction units are symmetrically installed on the frame on both sides of the conveyor belt. The correction units can guide the cardboard before it enters the three-module mechanism. The correction unit includes a mounting plate and a correction plate. The mounting plate is connected to the frame, and the correction plate is slidably connected to the mounting plate along a conveying direction perpendicular to the conveyor belt. There is a gap between the bottom of the correction plate and the conveyor belt, allowing the cardboard to be positioned between the two correction plates.

2. The three-module displacement dispensing machine according to claim 1, characterized in that, The three-module mechanism is provided in two groups, and the two groups of the three-module mechanism are distributed at intervals along the conveying direction of the conveyor belt.

3. A three-module displacement dispensing machine according to claim 2, characterized in that, The correction unit is provided in two sets. One set of the correction unit is located between the two sets of the three-module mechanism, and the other set of the correction unit is located on the side where the cardboard first enters the three-module mechanism.

4. A three-module displacement dispensing machine according to claim 1, characterized in that, The mounting plate is L-shaped, with one side of the mounting plate perpendicularly connected to the frame, and the other side of the mounting plate located above the conveyor belt and extending towards the symmetrical line of the conveyor belt. The mounting plate has an elongated hole, which is perpendicular to the conveying direction of the conveyor belt. The top of the correction plate is connected to a sliding rod, and the upper part of the sliding rod is connected to a limiting plate. The limiting plate abuts against the top of the mounting plate. The upper part of the sliding rod is threaded with a fastener. Tightening the fastener can restrict the sliding rod from sliding along the elongated hole.

5. A three-module displacement dispensing machine according to claim 4, characterized in that, The mounting plate has two elongated holes, and the two sides of the correction plate are connected to the sliding rods, which slide in cooperation with the two elongated holes respectively.

6. A three-module displacement dispensing machine according to any one of claims 1-5, characterized in that, In the two symmetrically arranged correction units, the front side of each correction plate is connected to a guide plate, and the two guide plates are distributed in a figure-eight shape.

7. A three-module displacement dispensing machine according to claim 6, characterized in that, The included angle between the two guide plates is 30°-60°.

8. A three-module displacement dispensing machine according to claim 1, characterized in that, The correction plate is L-shaped, with one side of the correction plate perpendicular to the conveyor belt and the other side of the correction plate extending in the direction of the symmetry line of the conveyor belt.

9. A three-module displacement dispensing machine according to claim 8, characterized in that, The top of the correction plate is equipped with a telescopic cylinder, the output shaft of which can extend downward to press the cardboard.

10. A three-module displacement dispensing machine according to claim 9, characterized in that, A flexible pressure plate is connected to the end of the output shaft of the telescopic cylinder.

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