Anti-offset unfolding device for paper coiled material for color printing packaging
By using a paper roll anti-deviation unfolding device for color printing and packaging, the problems of paper roll deviation and multi-roll switching during high-speed conveying are solved, achieving stable feeding and automatic deviation correction of the roll, thereby improving production efficiency and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-08
- Publication Date
- 2026-04-14
AI Technical Summary
In current color printing and packaging production, paper rolls are prone to shifting, wrinkling, and uneven tension during high-speed conveying, resulting in a decline in the appearance quality of finished products and production efficiency. Furthermore, material changing and positioning are inconvenient when switching between multiple rolls, affecting the degree of automation and product quality stability.
A paper roll anti-deviation unfolding device for color printing and packaging was designed, comprising a feeding component, an anti-deviation component, a tension component, and an anti-overlap component. Through handwheel positioning, elastic pushing of the locking block, linkage correction of the waist drum roller, tension control of the counterweight block, and support of the adapter rod, stable feeding, automatic deviation correction, and tension stability of the roll material are achieved.
It achieves stable unfolding of paper rolls, avoids chaotic and misaligned material supply, improves the continuity and automation level of color printing and packaging production, and ensures printing accuracy and lamination quality.
Smart Images
Figure CN224118399U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of printing and packaging machinery technology, and in particular to a device for preventing the deflection and unfolding of paper rolls for color printing and packaging. Background Technology
[0002] In the color printing and packaging production process, the stable unfolding of paper rolls is a crucial step in ensuring printing accuracy, lamination quality, and the smooth operation of subsequent processes such as slitting and die-cutting. As the packaging industry's demands for automation, high efficiency, and high quality continue to rise, problems such as paper roll misalignment, wrinkles, and uneven tension during high-speed transport are becoming increasingly prominent, directly impacting the appearance quality of finished products and production efficiency. To improve production continuity, some equipment has begun to adopt multi-roll configurations to achieve non-stop material changes. However, how to achieve orderly roll switching, automatic deviation correction during operation, stable tension control, and prevention of paper folding remain significant technological challenges. Therefore, developing an unfolding device that integrates multi-roll feeding, dynamic deviation correction, tension adjustment, and anti-folding flattening functions has become an urgent need to improve the stability and intelligence level of color printing and packaging production lines.
[0003] Currently, traditional paper roll unwinding devices mostly employ a single unwinding structure, lacking an effective dynamic correction mechanism. When the paper shifts during transport due to tension changes or guiding deviations, automatic adjustment is difficult, often requiring manual intervention and impacting continuous operation efficiency. Furthermore, in scenarios involving multiple rolls of paper, existing devices commonly suffer from inconvenient material changes and inaccurate positioning, easily leading to roll misalignment or feeding chaos. These problems restrict the automation level of color printing and packaging production and the stability of product quality.
[0004] Therefore, it is necessary to design an anti-deviation unfolding device for color printing and packaging paper rolls to solve the above-mentioned technical problems. Utility Model Content
[0005] In order to overcome the problems of inconvenient material changing and inaccurate positioning that exist in existing devices, which can easily cause misalignment of the roll or chaotic feeding, this utility model provides a device for preventing the roll of paper for color printing and packaging from shifting and unfolding.
[0006] The technical solution is as follows: A paper roll anti-deviation unfolding device for color printing and packaging includes a frame, a control box, and a feeding assembly. The control box is fixedly connected to the left side of the frame, and the feeding assembly is located on the right side of the frame. The feeding assembly includes a support frame, a placement tube frame, a handwheel, a locking block, a second spring, a placement roll, a guide rod, a locking bracket, a lever, a third spring, and a stop block. The support frame is fixedly connected to the right side of the frame, and the placement tube frame is rotatably connected to the middle of the right side of the support frame. The placement tube frame includes a main shaft and two discs fixed to both ends of the main shaft. The edges of the two discs are arranged in a circular array for mounting and placing the roll. The placement slots are equipped with stops fixedly connected to the edges of each slot. A handwheel is fixedly connected to the front of the placement cylinder frame. Four locking holes are arranged in a ring array in the middle of the front of the placement cylinder frame. Locking blocks are slidably connected to the support frame. One end of the locking block can extend into one of the locking holes. A second spring connects the support frame and the locking block. Locking brackets are provided on the sides of the two discs that are close to each other. The locking brackets are coaxially sleeved on the main shaft and can rotate relative to the main shaft. Four guide rods are arranged in a ring array between the locking brackets and the discs. A third spring is sleeved on each guide rod. Four levers are fixedly connected in a ring array on the outer periphery of the locking brackets.
[0007] As a preferred technical solution of this utility model, the conveying assembly includes rollers, a motor and a conveyor belt. Rollers are rotatably connected to the left and right sides of the top of the frame. A motor is fixedly connected to the right side of the top of the frame. The motor is electrically connected to the controller. The output shaft of the motor is fixedly connected to the right roller. A conveyor belt is wound between the two rollers.
[0008] As a preferred technical solution of this utility model, the anti-deviation component includes a mounting block, a sliding block, a waist drum roller, a connecting rod, and a first spring. Four mounting blocks are fixedly connected to the front and rear sides of the top of the frame. Sliding blocks are slidably connected to the two mounting blocks on each side. Waist drum rollers are rotatably connected between the corresponding sliding blocks at the front and rear. A connecting rod is fixedly connected to the middle of the outer side of each sliding block. A first spring is connected between each mounting block and the corresponding sliding block.
[0009] As a preferred technical solution of this utility model, the anti-overlapping component includes uprights, connecting shafts, adapter rods and pulleys. A pair of uprights are symmetrically fixedly connected to the front and rear sides of the top of the frame. A connecting shaft is fixedly connected between the two uprights on each side. Multiple adapter rods are fixedly connected at equal intervals along the circumference on each connecting shaft. A pulley is rotatably connected to the free end of each adapter rod.
[0010] As a preferred technical solution of this utility model, the tension assembly includes a mounting base, a bearing, a short shaft, a rotating rod, a pressure cylinder, and a counterweight. The mounting base is fixedly connected to both the front and rear sides of the right side of the frame. The bearing is rotatably connected inside the mounting base. The short shaft is fixedly connected to the side of the two bearings that are close to each other. The rotating rod is fixedly connected to the two short shafts. The pressure cylinder is fixedly connected between the two rotating rods. The pressure cylinder is located above the material conveying path. The counterweight is fixedly connected to the outer ends of the two rotating rods.
[0011] As a preferred technical solution of this utility model, the counterweight is designed to be detachable, and the counterweight can be replaced according to the tension requirements.
[0012] Beneficial effects: 1. This utility model achieves the effect of positioning and locking the placement cylinder frame by the cooperation of the handwheel and the locking hole in the feeding component and the elastic pushing action of the second spring on the locking block, so that the position of the roll material is stable during the feeding process, avoiding feeding chaos or misalignment caused by accidental rotation of the cylinder frame, and solving the technical problems of unstable switching and easy displacement when storing multiple roll materials.
[0013] 2. This utility model achieves automatic deviation correction through the linkage structure of the waist drum roller, sliding block, connecting rod and first spring in the anti-deviation component. When the paper deviates to one side, it pushes the corresponding sliding block to slide and compresses the first spring. The connecting rod drives the other side to produce a coordinated action, so that the waist drum roller generates a reverse corrective force, guiding the paper back to the center position, and realizing dynamic deviation correction of the conveying path.
[0014] 3. This utility model uses the counterweight in the tension assembly to act on the rotating rod to drive the pressure cylinder to press down, thereby achieving the effect of applying stable tension to the paper. At the same time, multiple sets of connecting rods and pulleys in the anti-overlap assembly provide rolling support for the paper edges, effectively preventing the paper from becoming loose, folded, or warped at the edges during the conveying process, thus improving the flatness and continuity of the unfolded paper for color printing and packaging. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0016] Figure 2 This is a three-dimensional structural diagram of the frame, control box, and conveying components of this utility model.
[0017] Figure 3 This is a three-dimensional structural diagram of the conveying component of this utility model.
[0018] Figure 4 This is a three-dimensional structural diagram of the anti-deviation component of this utility model.
[0019] Figure 5 This is a three-dimensional structural diagram of the mounting block, sliding block, and waist drum roller of this utility model.
[0020] Figure 6 This is a three-dimensional structural diagram of the sliding block, waist drum roller, and connecting rod of this utility model.
[0021] Figure 7 This is a three-dimensional structural diagram of the feeding component of this utility model.
[0022] Figure 8 This is a three-dimensional structural diagram of the support frame, placement cylinder frame, handwheel, and other components of this utility model.
[0023] Figure 9 This is a three-dimensional structural diagram of the placement of the cylinder frame and handwheel in this utility model.
[0024] Figure 10 This is a three-dimensional structural diagram of the handwheel, drum holder, and guide rod components of this utility model.
[0025] Figure 11 This is a three-dimensional structural diagram of the components of this utility model, including the card holder, lever, and third spring.
[0026] Figure 12 This is a three-dimensional structural diagram of the lever, third spring, and stop block components of this utility model.
[0027] Figure 13 This is a side view of the components of this utility model, including the lever, the third spring, and the stop block.
[0028] Figure 14 This is a three-dimensional structural diagram of the anti-overlapping component of this utility model.
[0029] Figure 15 This is a three-dimensional structural diagram of the adapter rod and pulley of this utility model.
[0030] Figure 16 This is a three-dimensional structural diagram of the tension component of this utility model.
[0031] Figure 17 This is a three-dimensional structural diagram of the mounting base, bearing, and short shaft of this utility model.
[0032] The components in the diagram are labeled as follows: 1-Frame, 2-Control box, 3-Conveying assembly, 301-Roller, 302-Motor, 303-Conveyor belt, 4-Anti-deviation assembly, 401-Mounting block, 402-Sliding block, 403-Waist drum roller, 404-Connecting rod, 405-First spring, 5-Feeding assembly, 501-Support frame, 502-Placement cylinder frame, 503-Handwheel, 504-Clamping hole, 505-Clamping block, 506-Second spring. 507-Placement slot, 508-Placement drum, 509-Guide rod, 510-Snap-fit bracket, 511-Pulley, 512-Third spring, 513-Stop block, 6-Anti-overlap assembly, 601-Upright pole, 602-Connecting shaft, 603-Adapter rod, 604-Pulley, 7-Tension assembly, 701-Mounting base, 702-Bearing, 703-Short shaft, 704-Rotating rod, 705-Pressure cylinder, 706-Counterweight block. Detailed Implementation
[0033] Example: A device for preventing the deflection and unfolding of paper rolls used in color printing and packaging, such as... Figure 1 , Figure 2 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 and Figure 13 As shown, the machine includes a frame 1, a control box 2, and a feeding assembly 5. The control box 2 is connected to the left side of the frame 1 by screws, and the feeding assembly 5 is located on the right side of the frame 1. The feeding assembly 5 includes a support frame 501, a placement drum frame 502, a handwheel 503, a locking block 505, a second spring 506, a placement drum 508, a guide rod 509, a locking bracket 510, a lever 511, a third spring 512, and a stop block 513. The support frame 501 is connected to the right side of the frame 1 by screws, and the placement drum frame 502 is rotatably connected to the middle of the right side of the support frame 501. The placement drum frame 502 includes a main shaft and two discs fixed to both ends of the main shaft. The edges of the two discs are each arranged in a ring array with placement slots 507 for mounting the placement drum 508. Each placement slot 507... Stoppers 513 are fixedly connected to the edges of each cylinder. A handwheel 503 is connected to the front of the cylinder holder 502 by screws. Four locking holes 504 are arranged in a ring array in the middle of the front of the cylinder holder 502. A locking block 505 is slidably connected to the support frame 501. One end of the locking block 505 can be inserted into one of the locking holes 504. A second spring 506 is connected between the support frame 501 and the locking block 505. A locking bracket 510 is provided on the side of the two discs that are close to each other. The locking bracket 510 is coaxially sleeved on the main shaft and can rotate relative to the main shaft. Four guide rods 509 are arranged in a ring array between the locking bracket 510 and the disc. A third spring 512 is sleeved on each guide rod 509. Four levers 511 are connected to the outer ring array of the locking bracket 510 by screws.
[0034] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the conveying assembly 3 includes a roller 301, a motor 302, and a conveyor belt 303. The roller 301 is rotatably connected to the top left and right sides of the frame 1. The motor 302 is connected to the top right side of the frame 1 by screws. The motor 302 is electrically connected to the controller. The output shaft of the motor 302 is fixedly connected to the right roller 301. The conveyor belt 303 is wound between the two rollers 301.
[0035] like Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, the anti-deviation component 4 includes a mounting block 401, a sliding block 402, a waist drum roller 403, a connecting rod 404, and a first spring 405. Four mounting blocks 401 are connected to the front and rear sides of the top of the frame 1 by screws. Sliding blocks 402 are slidably connected to the two mounting blocks 401 on each side. Waist drum rollers 403 are rotatably connected between the corresponding sliding blocks 402. A connecting rod 404 is fixedly connected to the middle of the outer side of each sliding block 402. A first spring 405 is connected between each mounting block 401 and the corresponding sliding block 402.
[0036] like Figure 1 , Figure 14 and Figure 15 As shown, the anti-overlapping assembly 6 includes uprights 601, connecting shafts 602, adapter rods 603, and pulleys 604. A pair of uprights 601 are symmetrically connected to the front and rear sides of the top of the frame 1 by screws. A connecting shaft 602 is fixedly connected between the two uprights 601 on each side. Multiple adapter rods 603 are fixedly connected at equal intervals along the circumference of each connecting shaft 602. A pulley 604 is rotatably connected to the free end of each adapter rod 603.
[0037] like Figure 1 , Figure 16 and Figure 17 As shown, the tension assembly 7 includes a mounting base 701, a bearing 702, a short shaft 703, a rotating rod 704, a pressure cylinder 705, and a counterweight 706. The mounting base 701 is connected to both the front and rear sides of the right side of the frame 1 by screws. The bearing 702 is rotatably connected inside the mounting base 701. The short shaft 703 is fixedly connected to the side of the two bearings 702 that are close to each other. The rotating rod 704 is connected to the two short shafts 703 by screws. The pressure cylinder 705 is fixedly connected between the two rotating rods 704. The pressure cylinder 705 is located above the material conveying path. The counterweight 706 is fixedly connected to the outer end of the two rotating rods 704. The counterweight 706 is detachable and can be replaced according to the tension requirements.
[0038] When this device is needed, first install the paper roll to be unfolded into the placement slot 507 in the feeding assembly 5, ensuring that the end of the roll is reserved for lead-out length. Manually rotate the handwheel 503 to drive the placement tube frame 502 to rotate, and adjust the required roll to the position facing the conveying direction. When the locking hole 504 on the handwheel 503 is aligned with the locking block 505 on the support frame 501, under the elastic force of the second spring 506, the locking block 505 automatically extends into the locking hole 504, realizing the positioning and locking of the handwheel 503 and the placement tube frame 502.
[0039] The selected roll of paper is then passed under the anti-overlap assembly 6 and introduced into the conveyor belt 303 via the pressure cylinder 705 of the tension assembly 7. The motor 302 is powered on and its output shaft drives the right roller 301 to rotate, which in turn drives the conveyor belt 303 to rotate synchronously with the left roller 301, forming a continuous conveying power. The paper roll moves forward under the traction of the conveyor belt 303 and enters the subsequent processing flow. The pressure cylinder 705 swings around the connecting shaft 602 through the rotating rods 704 at both ends, while the counterweight 706 applies a downward torque to the rotating rods 704 under the action of gravity, so that the pressure cylinder 705 continuously presses the paper surface, forming a stable tension control and effectively avoiding relaxation or stretching deformation caused by tension fluctuations.
[0040] When the paper shows a tendency to deviate during transport, the anti-deviation component 4 immediately activates the correction mechanism. The sliding block 402 on this side is pushed by a lateral force, causing it to slide inward along the slide rail on the mounting block 401. At the same time, the first spring 405 is compressed, and the connecting rod 404 on this side is linked to drive the sliding block 402 on the other side to produce a coordinated displacement, causing the waist drum roller 403 to deflect slightly as a whole, generating a reverse corrective force to guide the paper back to the center position. Once the paper returns to the center line, the first spring 405 returns to its original length, and the sliding block 402 resets, realizing automatic deviation correction. At the same time, the anti-overlap component 6 provides lateral flattening and anti-wrinkle protection for the paper. Multiple adapter rods 603 are radially distributed around the connecting shaft 602, and their free ends are rotatably connected to pulleys 604. During the paper's journey, the two sides of the paper contact the front and rear sets of pulleys 604 respectively. The pulleys 604 roll with the paper under the action of friction, providing uniform support force, effectively preventing the paper edges from warping, folding, or sticking between layers, significantly improving the unfolding quality and surface integrity.
Claims
1. A device for preventing the deflection and unfolding of paper rolls used in color printing and packaging, characterized in that, The machine includes a frame (1), a control box (2), and a feeding assembly (5). The control box (2) is fixedly connected to the left side of the frame (1), and the feeding assembly (5) is provided on the right side of the frame (1). The feeding assembly (5) includes a support frame (501), a placement drum frame (502), a handwheel (503), a locking block (505), a second spring (506), a placement drum (508), a guide rod (509), a locking bracket (510), a lever (511), a third spring (512), and a stop block (513). The support frame (501) is fixedly connected to the right side of the frame (1), and the placement drum frame (502) is rotatably connected to the middle of the right side of the support frame (501). The placement drum frame (502) includes a main shaft and two discs fixed to both ends of the main shaft. The edges of the two discs are provided with a ring array of placement slots (507) for installing the placement drum (508). Each placement slot... Stops (513) are fixedly connected to the edge of the groove (507). A handwheel (503) is fixedly connected to the front side of the placement cylinder frame (502). Four locking holes (504) are arranged in a ring array in the middle of the front side of the placement cylinder frame (502). A locking block (505) is slidably connected to the support frame (501). One end of the locking block (505) can be inserted into one of the locking holes (504). A second spring (506) is connected between the support frame (501) and the locking block (505). A locking bracket (510) is provided on the side of the two discs that are close to each other. The locking bracket (510) is coaxially sleeved on the main shaft and can rotate relative to the main shaft. Four guide rods (509) are arranged in a ring array between the locking bracket (510) and the disc. A third spring (512) is sleeved on each guide rod (509). Four levers (511) are fixedly connected in a ring array on the outer periphery of the locking bracket (510).
2. The anti-deviation unfolding device for color printing and packaging paper rolls according to claim 1, characterized in that, The conveying assembly (3) includes a roller (301), a motor (302) and a conveyor belt (303). The roller (301) is rotatably connected to the top left and right sides of the frame (1). The motor (302) is fixedly connected to the top right side of the frame (1). The motor (302) is electrically connected to the controller. The output shaft of the motor (302) is fixedly connected to the right roller (301). The conveyor belt (303) is wound between the two rollers (301).
3. The anti-deviation unfolding device for color printing and packaging paper rolls according to claim 2, characterized in that, The anti-deviation component (4) includes a mounting block (401), a sliding block (402), a waist drum roller (403), a connecting rod (404), and a first spring (405). Four mounting blocks (401) are fixedly connected to the front and rear sides of the top of the frame (1). Sliding blocks (402) are slidably connected to the two mounting blocks (401) on each side. Waist drum rollers (403) are rotatably connected between the corresponding sliding blocks (402) at the front and rear. A connecting rod (404) is fixedly connected to the middle of the outer side of each sliding block (402). A first spring (405) is connected between each mounting block (401) and the corresponding sliding block (402).
4. The anti-deviation unfolding device for color printing and packaging paper rolls according to claim 3, characterized in that, The anti-overlap assembly (6) includes a pole (601), a connecting shaft (602), a transition rod (603), and a pulley (604). A pair of poles (601) are symmetrically fixedly connected to the front and rear sides of the top of the frame (1). A connecting shaft (602) is fixedly connected between the two poles (601) on each side. Multiple transition rods (603) are fixedly connected at equal intervals along the circumference on each connecting shaft (602). A pulley (604) is rotatably connected to the free end of each transition rod (603).
5. A paper roll anti-deviation unfolding device for color printing and packaging according to claim 4, characterized in that, The tension assembly (7) includes a mounting base (701), a bearing (702), a short shaft (703), a rotating rod (704), a pressure cylinder (705), and a counterweight (706). The mounting base (701) is fixedly connected to both the front and rear sides of the right side of the frame (1). The bearing (702) is rotatably connected inside the mounting base (701). The short shaft (703) is fixedly connected to the side of the two bearings (702) that are close to each other. The rotating rod (704) is fixedly connected to the two short shafts (703). The pressure cylinder (705) is fixedly connected between the two rotating rods (704). The pressure cylinder (705) is located above the material conveying path. The counterweight (706) is fixedly connected to the outer ends of the two rotating rods (704).
6. A paper roll anti-deviation unfolding device for color printing and packaging according to claim 5, characterized in that, The counterweight (706) is detachable and can be replaced according to tension requirements.