A watermark-connected paper output device

Abstract

This invention relates to the field of paperboard processing, and more particularly to a paper output device for watermarked packaging lines, comprising a roller conveyor and a lifting mechanism located below it. The roller conveyor is fixed by support legs, and multiple synchronously rotating rollers drive the bundled boxes to flow along their length. The lifting mechanism consists of a cylinder, a mounting ring, and a rotating head. The cylinder is fixed to the support legs, and its output shaft is fixed to the mounting ring. The rotating head is coaxially rotatable outside the mounting ring, with a rubber contact head embedded at its top. The device is equipped with two sets of photoelectric sensing systems: an upstream sensor detects the box's positioning and triggers the cylinder to lift, causing the contact head to lift one corner of the box; a downstream sensor detects the completion of the rotation and controls the cylinder to fall back. Under the action of the roller thrust and the friction of the contact head, the box rotates 90 degrees around the cylinder axis, changing from parallel to the conveying direction to perpendicular to it, and then continues to flow. This invention achieves fully automatic high-precision steering in continuous conveying, with a compact structure and no damage to the box, significantly improving the efficiency of packaging production lines.

Description

Technical Field

[0001] This invention relates to the field of paperboard processing, and more particularly to a watermark-connected paper output device. Background Technology

[0002] In automated paper packaging production lines, directional adjustment during the transfer of bundled boxes is a common requirement. In traditional processes, the boxes need to be rotated from a parallel conveying direction to a vertical direction to accommodate subsequent labeling, stacking, or sorting processes. Currently, the mainstream solutions fall into two categories: one is manual steering, which relies on operators to manually rotate the boxes, resulting in low efficiency and high labor intensity; the other is mechanical steering devices, such as push rod or turntable mechanisms, which force the boxes to deflect using external force.

[0003] Existing mechanical steering equipment has significant drawbacks: First, the push-rod structure requires lateral space on the production line, resulting in a bulky layout, and the uneven stress on the box makes it prone to tipping over. Second, while the turntable mechanism can achieve 90-degree rotation, it requires interrupting the conveying process, reducing overall cycle efficiency. More importantly, both types of equipment lack precise positioning capabilities; the box is prone to inertial offset or sliding, leading to deviations in the steering angle, requiring secondary correction. Furthermore, rigid contact parts are prone to wear on the box surface, affecting the appearance quality of the watermarked paper packaging. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a watermark-connected paper output device that achieves fully automatic high-precision steering during continuous conveying, avoiding the problems of low efficiency, poor accuracy, and bulky structure caused by manual intervention or disc steering mechanisms. Specifically, this is achieved through the following technical solutions.

[0005] The present invention provides a watermark-connected paper output device, including a roller conveyor with supporting legs at the bottom. The roller conveyor is provided with a plurality of synchronously rotating rollers in the same direction, which are used to drive the bundled boxes placed on it to flow along the length of the conveyor. The lifting mechanism is installed below the roller conveyor and includes a cylinder fixed to the support leg. The output shaft of the cylinder is set perpendicular to the ground. A mounting ring is fixed to the end of the output shaft. A rotating head is rotatably mounted on the outside of the mounting ring. The top of the rotating head is provided with a contact head for contacting the lower surface of the bundle box. The rotating head can pass through the gap between adjacent rollers. The first photoelectric sensing system is located upstream in the direction of the bundle box's movement, used to detect when the bundle box is in position and send a lifting signal to the lifting mechanism; The second photoelectric sensing system is located downstream of the bundle box in the direction of its rotation. It is used to detect when the bundle box has been flipped into place and to send a fall signal to the lifting mechanism.

[0006] Preferably, the first photoelectric sensing system includes a first transmitter and a first receiver facing each other, and the second photoelectric sensing system includes a second transmitter and a second receiver facing each other.

[0007] Preferably, the first transmitter, the first receiver, the second transmitter, and the second receiver are at the same horizontal height, and their height is located between the lower and upper surfaces of the bundle box.

[0008] Preferably, the contact head is made of rubber or latex.

[0009] Preferably, the radial dimension of the rotating head is smaller than the gap width between two adjacent rollers.

[0010] Preferably, the light path between the first transmitter and the first receiver, and the light path between the second transmitter and the second receiver, are both perpendicular to the flow direction of the bundled box.

[0011] Preferably, after receiving the lifting signal, the cylinder extends its output shaft upward to the highest point, causing the contact head to lift the strapping box and form an inclined state; After receiving the fall signal, the cylinder retracts its output shaft downwards, causing the bundle box to be placed horizontally back on the roller.

[0012] Preferably, the support legs are fixed at intervals at the bottom along the length of the roller conveyor to support the roller conveyor and to install the cylinder.

[0013] Preferably, a plurality of the rollers are arranged along the length direction of the roller conveyor, and their axial direction is perpendicular to the length direction of the conveyor.

[0014] After adopting the above technical solution, the beneficial effects of the present invention are: 1. By using two sets of photoelectric sensing systems to coordinate and control the lifting timing, the upstream sensor triggers the cylinder to lift and the downstream sensor triggers the descent, ensuring that the box completes a 90-degree deflection and accurate positioning during movement, avoiding the stop and adjustment required by traditional equipment and significantly improving production line efficiency.

[0015] 2. The contact head is made of rubber / latex material. During the lifting process, the friction between the contact head and the bottom of the box is increased through flexible contact. This prevents the box from slipping and shifting when turning, and avoids surface indentation or watermark damage caused by rigid collision, thus ensuring the integrity of the paper package's appearance.

[0016] 3. The lifting mechanism is integrated into the conveyor legs, and the rotating head can be inserted into the gap between the rollers for operation, without occupying additional production line space.

[0017] 4. The design of vertical cylinder lifting combined with the rotation of the rotating head drives the housing to rotate with a single degree of freedom. The structure is simple and has a low failure rate, significantly reducing maintenance costs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A three-dimensional view of the paper output device for watermark connection lines; Figure 2 Top view of the watermark line paper output device; Figure 3 This is the front view of the lifting mechanism; Figure 4 for Figure 3 A magnified view of a portion of the image; Figure 5 for Figure 2 The dynamic change diagram; Figure 6 for Figure 5 The dynamic change diagram.

[0020] Explanation of reference numerals in the attached figures: 101-Circular roller conveyor, 102-Support leg, 103-Circular roller, 104-Bundle box, 105-First transmitter, 106-First receiver, 107-Second transmitter, 108-Second receiver; 200-Lifting mechanism, 201-Cylinder, 202-Rotating head, 203-Mounting ring, 204-Contact head. Detailed Implementation

[0021] The features and exemplary embodiments of various aspects of the present invention will now be described in detail. To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are not configured to limit the present invention. For those skilled in the art, the present invention can be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the invention.

[0022] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the invention. It should also be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] An embodiment of the present invention provides a watermark-connected paper output device, see below. Figures 1-6 The watermark line paper output device includes a roller conveyor 101 and a lifting mechanism 200 installed below the roller conveyor 101. Several support legs 102 are fixed along the length of the bottom of the roller conveyor 101 for supporting and installing the roller conveyor 101. Several rollers 103 are provided along the length of the roller conveyor 101. The axial direction of the rollers 103 is perpendicular to the length direction of the roller conveyor 101. The rollers 103 rotate synchronously and in the same direction, which together drive and prevent the bundle box 104 above the rollers 103 from flowing along the length direction of the roller conveyor 101.

[0024] The lifting mechanism 200 includes a cylinder 201, which is fixedly mounted on the support leg 102. The output shaft of the cylinder 201 is perpendicular to the ground. The output end of the cylinder 201 is coaxially fixed with the mounting ring 203. A rotating head 202 is coaxially rotatably mounted on the outside of the mounting ring 203. Several contact heads 204 are fixed on the top of the rotating head 202. The contact heads 204 intermittently abut against the lower surface of the bundling box 104.

[0025] The contact head 204 is preferably made of rubber or latex, so as to increase the friction between the contact head 204 and the bundle box 104 when they come into contact, and prevent the bundle box 104 and the contact head 204 from sliding relative to each other.

[0026] The diameter of the rotating head 202 is smaller than the gap between two adjacent rollers 103, allowing it to pass through the gap between the two adjacent rollers 103 and drive the contact head 204 mounted on the rotating head 202 to abut against the bundling box 104 above the rollers 103.

[0027] See Figure 2 Two sets of photoelectric sensing systems are also installed above the roller conveyor 101. The first transmitter 105 and the first receiver 106 directly opposite it form the first set of photoelectric sensing systems, which are located upstream of the flow direction of the bundle box 104. They are used to detect that the bundle box 104 has flowed into place and transmit lifting signals to the lifting mechanism 200.

[0028] The second transmitter 107 and the second receiver 108 directly opposite it form a second set of photoelectric sensing systems, located downstream of the flow direction of the bundle box 104, for detecting that the bundle box 104 has been flipped into place and transmitting a falling signal to the lifting mechanism 200.

[0029] The first transmitter 105, the first receiver 106, the second transmitter 107, and the second receiver 108 are at the same horizontal height, and their height is located between the lower surface and the upper surface of the bundle box 104, so as to effectively detect the position of the bundle box 104.

[0030] In addition, the light path between the first transmitter 105 and the first receiver 106, and the light path between the second transmitter 107 and the second receiver 108 are both perpendicular to the flow direction of the packing box 104.

[0031] See Figure 2 , Figure 5 , Figure 6 Before the bundle box 104 flows to the top of the lifting mechanism 200, the length direction of the bundle box 104 is parallel to the length direction of the roller conveyor 101. After being lifted by the lifting mechanism 200, it is deflected by 90 degrees, so that the length direction of the bundle box 104 is perpendicular to the length direction of the roller conveyor 101.

[0032] As the bundle box 104 begins to move between the first transmitter 105 and the first receiver 106, the output end of the cylinder 201 begins to extend upwards. When the output end of the cylinder 201 extends to its maximum position, it just lifts one corner of the bundle box 104, placing it in a position similar to... Figure 2 In the tilted state, the bundling box 104 continues to be driven by the roller 103, causing the bundling box 104 to begin rotating around the axis of the cylinder 201 under the combined action of the contact head 204 and the roller 103, thus rotating the bundling box 104 sequentially to... Figure 5 and Figure 6 In the state of being, when the bundle box 104 rotates to Figure 6 When the cylinder 201 is in the state of being positioned between the second transmitter 107 and the second receiver 108, the output end of the cylinder 201 begins to retract downwards, flattening the bundle box 104 again, so that it continues to flow downwards under the action of the roller 103.

[0033] The embodiments described above are not exhaustive, nor do they limit the invention to any specific embodiments. Clearly, many modifications and variations can be made based on the above description. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to effectively utilize the invention and its modifications. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A watermark-connected paper output device, characterized in that, include: A circular roller conveyor (101) is provided with supporting legs (102) at its bottom. The circular roller conveyor (101) is provided with several synchronously rotating circular rollers (103) for driving the bundled boxes (104) placed on it to flow along the length of the conveyor. The lifting mechanism (200) is installed below the roller conveyor (101) and includes a cylinder (201) fixed on the support leg (102). The output shaft of the cylinder (201) is set perpendicular to the ground. An installation ring (203) is fixed at the end of the output shaft. A rotating head (202) is rotatably installed on the outside of the installation ring (203). The top of the rotating head (202) is provided with a contact head (204) for contacting the lower surface of the bundle box (104). The rotating head (202) can pass through the gap between adjacent rollers (103). The first photoelectric sensing system is located upstream of the bundle box (104) in the direction of flow, and is used to detect when the bundle box (104) is in place and send a lifting signal to the lifting mechanism (200); The second photoelectric sensing system is located downstream of the bundle box (104) in the direction of flow. It is used to detect when the bundle box (104) is flipped into place and to send a fall signal to the lifting mechanism (200).

2. The watermark-connecting paper output device according to claim 1, characterized in that: The first photoelectric sensing system includes a first transmitter (105) and a first receiver (106) facing each other, and the second photoelectric sensing system includes a second transmitter (107) and a second receiver (108) facing each other.

3. The watermark-connecting paper output device according to claim 2, characterized in that: The first transmitter (105), the first receiver (106), the second transmitter (107), and the second receiver (108) are at the same horizontal height, and their height is between the lower and upper surfaces of the packing box (104).

4. The watermark-connecting paper output device according to claim 1, characterized in that: The contact head (204) is made of rubber or latex.

5. The watermark-connecting paper output device according to claim 1, characterized in that: The radial dimension of the rotating head (202) is smaller than the gap width between two adjacent rollers (103).

6. The watermark-connecting paper output device according to claim 2, characterized in that: The light path between the first transmitter (105) and the first receiver (106), and the light path between the second transmitter (107) and the second receiver (108) are both perpendicular to the flow direction of the packing box (104).

7. The watermark-connecting paper output device according to claim 1, characterized in that: After receiving the lifting signal, the cylinder (201) extends its output shaft upward to the highest point, causing the contact head (204) to lift the bundle box (104) and form an inclined state; After receiving the fall signal, the cylinder (201) retracts its output shaft downward, so that the bundle box (104) is placed horizontally on the roller (103) again.

8. The watermark line output device according to claim 1, characterized in that: The support legs (102) are fixed at intervals at the bottom along the length of the roller conveyor (101) to support the roller conveyor (101) and to install the cylinder (201).

9. The watermark-connecting paper output device according to claim 1, characterized in that: Several of the rollers (103) are arranged along the length of the roller conveyor (101), and their axial direction is perpendicular to the length of the conveyor.

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