A down-up counting paper type large thickness counter

Abstract

The application discloses a big-thickness counting paper machine counting paper from bottom to top, which comprises a rack, a workbench, a machine head assembly, a label paper conveying mechanism, a cutting assembly, a machine head lifting assembly and a paper pressing assembly. The transmission assembly drives the first rocker arm assembly and the second rocker arm assembly to perform back-and-forth rocking arm action. The end of the first rocker arm assembly is connected with a prong rod for prying paper, and the end of the second rocker arm assembly is connected with a counting paper head for sucking paper. The counting paper mode of the traditional counting paper machine is changed to the mode of counting paper from bottom to top. The counting paper mode of single counting paper head is used in the structure, two sets of ventilation systems are avoided, and the counting mechanism is arranged on the transmission shaft of the counting paper head and is linked with the rocker arm assembly. The counting paper head structure is simpler, the cost is lower, in the counting paper form, the suction force can be reduced by using the gravity factor of paper, the paper can be sucked out of the gap, the prong rod can be inserted, and the counting paper work can be realized by using a smaller-power vacuum pump.

Description

Technical Field

[0001] This invention relates to the field of paper counting machine technology, and in particular to a bottom-up paper counting machine for thick paper. Background Technology

[0002] CN 110482277 A discloses a novel top-down paper counting machine. It features two paper counting heads on the machine head and an air exchange valve that allows the two heads to exchange air and draw paper, thereby rapidly increasing the paper drawing and counting speed. A swing arm mechanism enables the two paper counting heads to swing and draw paper, thus handling some thicker papers. However, for counting thick papers, the biggest problem is not the counting speed, but paper jams. This prior art uses two paper counting heads to draw paper alternately, requiring two sets of air circuits, thus necessitating the implementation of an air exchange valve. The paper counting machine has an air valve, and its counting head (counting claw) is structurally very complex, making assembly very troublesome and resulting in a high maintenance rate. The complex structure also leads to higher maintenance costs. For counting thick paper, its efficiency is not improved. In addition, the counting direction of this paper counting machine is from top to bottom. Since the paper has gravity, a large part of the suction force is used to cope with and hold the paper, which slows down the counting speed. There is an urgent need to improve this paper counting machine to increase its counting efficiency, simplify its structure, reduce the maintenance rate, and lower maintenance costs.

[0003] Traditional paper counting machines have certain deficiencies in their structural design and sensing mechanism for counting and sensing the rotation angle of the rocker arm. In particular, the counting method involves placing a counting sensor on the counting head, which complicates the structure of the counting head and makes it very expensive. As for the angle of the rocker arm's rotation position, traditional paper counting machines currently lack a structure and sensing mechanism to determine the working state of the rocker arm. When the rocker arm assembly malfunctions and the counting operation deviates, it is not easy to detect. Therefore, sometimes multiple tests are required to achieve accuracy.

[0004] Traditional paper counting machines use pressure sensors to determine whether the head assembly needs to rise. However, these pressure sensors are frequently subjected to pressure and friction from the heavy head assembly, causing them to malfunction often.

[0005] Traditional paper counting machines use limit switches to determine when the paperboard is pressed against the paper. This requires limit switches to be installed at both the top and bottom of the chain, which necessitates wiring. Wiring is relatively easy in a fixed structure, but the chain moves up and down, making wiring work inconvenient. Careless use can also easily cause the wires to jam, compromising durability in the long run. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a bottom-up paper counting machine for large thicknesses, so as to solve the technical problems mentioned in the background art.

[0007] To solve the technical problem, the present invention adopts the following technical solution:

[0008] A bottom-up paper counting machine for thick sheets includes a frame, a worktable, a head assembly, a label paper conveying mechanism, a cutting assembly, a head lifting assembly, and a paper pressing assembly. The head assembly is located on one side of the frame, and the worktable is located on the other side of the frame. The label paper conveying mechanism conveys label paper to one side of the head assembly and cuts it through the cutting assembly. The head lifting assembly can drive the head assembly to rise and fall to perform paper counting. The paper pressing assembly is located on one side of the worktable to press the paper to be counted. The head assembly includes a rocker arm assembly and a transmission assembly. The rocker arm assembly includes a first rocker arm assembly and a second rocker arm assembly. The transmission assembly drives the first rocker arm assembly and the second rocker arm assembly to perform back-and-forth rocker arm movements. The end of the first rocker arm assembly is connected to a lever for spreading the paper, and the end of the second rocker arm assembly is connected to a counting head for holding the paper.

[0009] Specifically, it also includes a sensing mechanism, which comprises a photoelectric sensing component and a digital encoding component. The photoelectric sensing component includes a first photoelectric sensor switch, a counting rotor, a second photoelectric sensor switch, and an angle rotor. Both the counting rotor and the angle rotor are linked to the drive shaft of the rocker arm assembly. The first photoelectric sensor switch is used to record the number of rotations of the counting rotor to determine the number of papers to be counted. The second photoelectric sensor switch is used to sense and determine the position of each component in the rocker arm assembly to determine the working state of the rocker arm assembly. The digital encoding component includes an encoder, a horizontal support rotor, a horizontal swing arm, and an angle gear. The horizontal support rotor is connected to one end of the head assembly and rotates in conjunction with the head assembly. The horizontal swing arm is located at one end of the horizontal support rotor and rotates in conjunction with the horizontal support rotor. The angle gear is linked to the horizontal swing arm through a toothed engagement. The encoder is located on the other side of the gear. When the head assembly counts a certain number of papers and shifts upward at a certain angle, the rotation of the horizontal swing arm and the angle gear transmits the information to the encoder, allowing the system to determine whether the head assembly needs to rise.

[0010] Specifically, the counting plate includes a shielded end and a non-shielded end. When the first photoelectric sensor detects a shielded signal on one side and a non-shielded signal once, it is determined that the rocker arm assembly has completed one paper counting action. The angle rotating plate includes an initial slot and a positioning slot. The initial slot is aligned with the area of ​​the shielded end of the counting plate near the non-shielded end. The area of ​​the initial slot is larger than the area of ​​the positioning slot. When the first photoelectric sensor detects the shielded signal of the counting plate and the second photoelectric sensor detects a non-shielded signal that lasts for a longer period of time, it is determined to be the original position of the rocker arm assembly. Based on this, the position of each component of the rocker arm assembly is determined when the second photoelectric sensor detects the position of other positioning slots.

[0011] Specifically, the cutting assembly includes an upper blade holder, a lower blade holder, and an electromagnet. The lower blade holder is hinged to one end of the upper blade holder. A tension spring is connected to the upper end of the electromagnet, and the other end of the tension spring is connected to the upper blade holder to pull the upper blade holder downward for cutting. An upper cutter is provided at the end of the upper blade holder, and a lower cutter is provided at the position of the upper cutter corresponding to the position of the upper cutter.

[0012] Specifically, the upper end of the upper cutter is provided with a cutter limiting piece, the upper end of the lower cutter holder is provided with a cutter limiting groove, the cutter limiting piece slides up and down in the cutter limiting groove, the lower end of the cutter limiting groove is also provided with a label strip outlet, and the upper end of the label strip outlet is provided with a guide block, wherein the guide block is used to guide the label strip to the gap of the target paper at the moment the label strip is cut.

[0013] Specifically, the machine head lifting assembly includes a lifting slide, a base plate, a top plate, a slide rod, a lead screw, and a lifting motor. The slide rod and lead screw are provided between the base plate and the top plate. One end of the lead screw is rotatably connected to the lifting motor. One end of the lifting slide is fixedly connected to the machine head assembly to drive the machine head assembly to lift and lower, while the other end is slidably mounted on the slide rod. The inner side of the lifting slide is provided with a nut sleeve that cooperates with the lead screw. When the lifting motor rotates, it can drive the lead screw to rotate, thereby driving the lifting slide to lift and lower on the lead screw.

[0014] Specifically, the paper pressing assembly includes a paper pressing plate, a paper pressing lifting motor, a chain, a chain disc, a guide rail, a top connecting plate, and a bottom connecting plate. A guide rail is installed between the top connecting plate and the bottom connecting plate. The two sides of the paper pressing plate slide and lift in cooperation with the guide rail via guide sliders. The upper and lower ends of the chain are respectively cooperated by two chain discs to achieve closed-loop rotation. The chain passes through and is fixed to one end of the paper pressing plate. When the paper pressing lifting motor rotates, it can drive the chain disc to rotate, thereby driving the paper pressing plate to slide up and down through the chain, so as to control the pressing and releasing of the paper pressing plate.

[0015] Specifically, the transmission assembly includes a main drive shaft, a secondary drive shaft, a head motor, and several rocker arm drive shafts. The main drive shaft is connected to the output shaft of the head motor. The secondary drive shaft and the rocker arm drive shaft are both connected to the main drive shaft via belt drive. The counting vane and the angle vane are both mounted on the main drive shaft and rotate together with it. The secondary drive shaft drives the label strip via a gear assembly. The head assembly also includes side plates. The horizontal support rod passes through the two side plates and serves as the support and deflection shaft for the entire head assembly. The other end of the horizontal support rod is connected to a horizontal swing arm.

[0016] Specifically, the paper counting head is provided with a ventilation groove, an air intake hole and a paper insertion bevel. One end of the paper counting head is fixedly connected to the end of the second rocker arm assembly. The two sides of the paper counting head are hollowed out to form a ventilation groove and a slot is opened on one side of the free end. The air intake hole is hollowed out on the upper and lower end surfaces of the paper counting head. The paper insertion bevel is obliquely symmetrically arranged on both sides of the paper counting head.

[0017] Specifically, this invention also discloses a pressing plate lifting judgment mechanism applied to a paper counting machine, including a paper counting machine body, a pressing plate lifting motor, and a pressing plate. The pressing plate is slidably mounted on the paper counting machine body. The pressing plate lifting motor can drive the pressing plate to lift and lower. The invention is characterized by further including a speed sensor installed inside the pressing plate lifting motor, which can sense changes in the motor speed and transmit the electrical signal of the change to a control board or control system. The judgment mechanism includes the following steps:

[0018] S1: When the paper counting command is issued, the control system issues a command to lower the pressure plate. The paper pressing lifting motor drives the chain to rotate, thereby causing the pressure plate to slide and press against the upper surface of the paper to be counted.

[0019] S2: The instant the pressure plate presses against the upper surface of the paper to be counted, this time is defined as M1. The speed of the paper pressing lifting motor changes slightly. This change is detected by the sensor. This slight change in speed is defined as Z1. The sensor transmits this change signal to the control system. The control system determines that the pressure plate has touched the upper surface of the paper to be counted.

[0020] S3: The control system continues to operate the motor for a period of time after sensing M1, which is defined as M2. The operating speed of the motor in M2 is defined as Z2. When the motor has rotated through the speed of Z2 within the time of M2, the pressure plate can just press the paper to be counted firmly so that the paper to be counted will not be loose when the machine head counts the paper.

[0021] S4: After the paper counting is completed, the paper pressing lifting motor reverses, lifting the paper pressing board and resetting.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] (1) This invention patent changes the paper counting method of the traditional paper counting machine to a method that is changed by... Down The paper counting method has been structurally modified to use a single paper head counting method, avoiding the use of two sets of ventilation systems. The counting mechanism is set on the drive shaft of the paper counting head and linked with the rocker arm assembly. The paper counting head structure is simpler and the cost is lower. In terms of paper counting method, the suction force can be reduced to suck the paper out of the gap for easy insertion of the lever. A smaller vacuum pump can be used to realize the paper counting work.

[0024] (2) This invention patent utilizes the cooperation of two photoelectric sensor switches in the photoelectric sensor component with the technical rotating plate and the angle rotating plate to count the number of papers, and to sense the position of each component of the rocker arm component so as to know whether the working state of the rocker arm component is a normal state. The cooperation of the horizontal swing arm, angle gear and encoder in the digital encoding component is used to sense whether the head component deviates from the angle, and finally to determine whether the structural component needs to be raised to adjust to the optimal paper counting angle.

[0025] (3) This invention provides a new method of judging whether the pressure plate has pressed the paper by sensing the subtle speed change of the motor, replacing the traditional method of judging by limit switches. It does not require wiring, is more durable in the later stage, and is very accurate. Attached Figure Description

[0026] Figure 1 : This is a schematic diagram of the overall structure of the present invention patent. Figure 1 ;

[0027] Figure 2 : This is a schematic diagram of the overall structure of the present invention patent. Figure 2 ;

[0028] Figure 3 : This is a schematic diagram of the head assembly structure in this invention patent. Figure 1 ;

[0029] Figure 4 : This is a schematic diagram of the head assembly structure in this invention patent. Figure 2 ;

[0030] Figure 5 : This is a schematic diagram of the head assembly structure in this invention patent. Figure 3 ;

[0031] Figure 6 : This is a structural diagram of the head lifting assembly and digital encoding assembly in this invention patent;

[0032] Figure 7 : This is a schematic diagram of the head assembly in the present invention patent. Figure 4 ;

[0033] Figure 8This invention patent Figure 7 Enlarged section A Figure 1 ;

[0034] Figure 9 This invention patent Figure 7 Enlarged section A Figure 2 ;

[0035] Figure 10 This is a schematic diagram of the paper pressing assembly structure in this invention patent;

[0036] Figure 11 This is a schematic diagram of the paper scrap structure in this invention patent;

[0037] Figure 12 This is a schematic diagram of the cutting component structure in this invention patent;

[0038] Figure 13 This is an exploded view of the cutting component structure in this invention patent.

[0039] Figure 14 This is a schematic diagram showing the tilting angle of the head assembly during the paper counting process and the adjustment of the angle using the head lifting assembly in this invention patent.

[0040] In the diagram: Frame 1, Workbench 2, Head assembly 100, Label paper conveying mechanism 200, Cutting assembly 300, Head lifting assembly 400, Paper pressing assembly 500, First rocker arm assembly 101, Second rocker arm assembly 102, Lever 3, Paper counter 4, First photoelectric sensor switch 201, Counting rotor 5, Second photoelectric sensor switch 202, Angle rotor 6, Encoder 203, Horizontal support rotor 204, Horizontal swing arm 205, Angle gear 206, Covered end 51, Uncovered end 52, Initial slot 61, Positioning slot 62, Upper knife holder 310, Lower knife holder 320, Electromagnet 330, Tension spring 331. Upper cutter 311, lower cutter 321, cutter limiting piece 312, cutter limiting groove 322, label strip outlet 323, guide block 324, lifting slide 410, base plate 420, top plate 430, slide rod 440, lead screw 450, lifting motor 460, nut sleeve 411, pressure plate 510, pressure lifting motor 520, chain 530, chain disc 540, guide rail 550, top connecting plate 560, bottom connecting plate 570, main drive shaft 103, secondary drive shaft 104, head motor 105, rocker arm drive shaft 106, side plate 107, ventilation groove 401, air suction hole 402, paper insertion inclined surface 403. Detailed Implementation

[0041] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0042] refer to Figures 1 to 14 :

[0043] refer to Figure 1-5 This invention discloses a bottom-up paper counting machine for thick sheets, comprising a frame 1, a worktable 2, a head assembly 100, a label paper conveying mechanism 200, a cutting assembly 300, a head lifting assembly 400, and a paper pressing assembly 500. The head assembly 100 is located on one side of the frame 1, and the worktable 2 is located on the other side of the frame 1. The worktable 2 serves as an operating surface for placing the sheets to be counted for pressing by the paper pressing board 510 and for counting the sheets. The label paper conveying mechanism 200 conveys the label paper to one side of the head assembly 100 and cuts it by the cutting assembly 300. This process counts a fixed number of sheets and divides the sheets to be counted into units. The head lifting assembly 400 can drive the head assembly 100 to rise and fall for the paper counting operation. The paper pressing assembly 500 is located on one side of the workbench 2 to press the paper to be counted. The head assembly 100 includes a rocker arm assembly and a transmission assembly. The rocker arm assembly includes a first rocker arm assembly 101 and a second rocker arm assembly 102 (existing technology). The end of the first rocker arm assembly 101 is connected to a lever 3 for pushing the paper apart, and the end of the second rocker arm assembly 102 is connected to a counting head 4 for holding the paper. The counting head 4 provides suction through an air compressor connected to an air valve and an air pipe. The transmission assembly drives the first rocker arm assembly 101 and the second rocker arm assembly 102 to perform a back-and-forth rocking motion. Unlike the two counting heads 4 in the prior art, this invention only requires one counting head 4 to complete the paper counting work, which is particularly practical for counting thick paper.

[0044] refer to Figure 6-8In a further embodiment, the paper counting machine of the present invention also includes a sensing mechanism, which includes a photoelectric sensing component and a digital encoding component. The photoelectric sensing component includes a first photoelectric sensor switch 201, a counting rotor 5, a second photoelectric sensor switch 202, and an angle rotor 6. Both the counting rotor 5 and the angle rotor 6 are linked to the drive shaft of the rocker arm assembly. The counting rotor 5 includes a shielded end 51 and a non-shielded end 52. When the first photoelectric sensor switch 201 senses a shielded signal on one side and a non-shielded signal on the other, it determines that the rocker arm assembly has completed one paper counting action. That is, a notch is provided on the counting rotor 5, and the drive shaft rotates... When the counting rotor 5 rotates once, it also rotates once. The first photoelectric sensor switch 201 receives a signal indicating that the light is blocked and a signal indicating that the light is not blocked. At this point, it is determined that the drive shaft has rotated once, meaning that the two rocker arm assemblies have driven the paper counting head 4 and the lever 3 to perform one paper counting action, i.e., one sheet of paper has been counted. This process can be repeated to determine how many sheets of paper the paper counter has counted, which is then displayed digitally on the display. Similarly, the angle rotor 6 includes an initial slot 61 and a positioning slot 62. The initial slot 61 is aligned with the area of ​​the shielded end 51 of the counting rotor 5 near the unshielded end 52. The area of ​​the initial slot 61 is larger than that of the positioning slot 62. The area of ​​slot 62, or what can be understood as the difference between the diameter of the initial slot 61 and the diameter of the positioning slot 62, is preferably divided into 16 slot surfaces. The first slot surface (initial slot 61) covers an angle of 30 degrees, while the remaining 15 slot surfaces (positioning slots 62) equally cover the remaining 330-degree area. In this way, the first slot surface can be installed in accordance with the position of the shielded end 51 near the unshielded end 52. At this time, the rocker arm assembly is returned to its original position. Finally, the belt and other components are installed. When the first photoelectric sensor switch 201 detects the shielding signal of the technical rotating plate and the second photoelectric sensor switch 202 detects the duration... A longer, unobstructed signal is determined to be the original position of the rocker arm assembly. Using this as a reference point, when the second photoelectric sensor switch 202 detects the position of other positioning slots 62, the position of each component of the rocker arm assembly is located. Here, the other 15 positioning slots 62 can be numbered, and each number is arranged in clockwise order. The position of each component of the rocker arm assembly corresponding to each number can also be recorded in the system. Then, the working state of each component of the rocker arm assembly can be determined based on the detected angle rotation signal. If an error occurs, an alarm can be set in the system to avoid affecting the accuracy of paper counting.

[0045] refer to Figure 6 and Figure 14 ,in Figure 14This diagram illustrates why the angle shifts. In a further embodiment, specifically, when counting paper, the counting head 4 counts one sheet at a time. However, since the number of sheets to be counted is often hundreds or even thousands, and these sheets are quite thick, simply counting at one angle is insufficient. Therefore, the counting head needs to rise or fall accordingly. Taking a traditional top-down counting device as an example, its judgment mechanism is achieved by installing a pressure sensor on the counting head. When the counting head 4 has counted a certain number of sheets, the entire counting head will tilt. For example, when counting from top to bottom, the head will shift counterclockwise, and when counting from bottom to top, the head will shift clockwise. The traditional judgment method involves setting a pressure block on the head, which moves with the head... The angle of the pressure sensor applies a gravitational force. When the system senses that the force applied to the sensor exceeds a certain threshold, it indicates that the counting head (counting head 4) can no longer continue counting at this angle. The machine head needs to be lowered and the angle adjusted before continuing counting. Therefore, a signal is sent to the lifting motor 460 to raise or lower the machine head, allowing counting head 4 to be adjusted to a better position for counting. However, this traditional judgment mechanism has a drawback: the pressure sensor is prone to failure. This is because the machine head is very heavy, and the tilting and raising / lowering of the machine head generates friction. Therefore, in some Japanese paper counting machines, the pressure sensor is often the most frequently malfunctioning component. This is in contrast to the traditional paper counting machine head raising / lowering judgment mechanism. The difference in the disconnection mechanism is that a structure that can detect the tilt angle of the machine head without a pressure sensor is provided here. Specifically, the digital encoding component includes an encoder 203, a horizontal support rotating rod 204, a horizontal swing arm 205, and an angle gear 206. The horizontal support rotating rod 204 is connected to one end of the machine head assembly 100 and rotates together with the machine head assembly 100. The horizontal support rotating rod 204 serves as a rotating shaft for supporting and rotating the entire machine head assembly 100. The horizontal swing arm 205 is located at one end of the horizontal support rotating rod 204 and rotates together with the horizontal support rotating rod 204. The angle gear 206 is linked to the horizontal swing arm 205 through a toothed engagement. The encoder 203 is located on the other side of the gear. When the machine head assembly 100... When the paper counting reaches a certain number and the angle shifts upwards to a certain angle, the rotation of the horizontal swing arm 205 and the angle gear 206 transmits the signal to the encoder 203, allowing the system to determine whether the paper counting head needs to rise. Specifically, after the encoder 203 senses an angle at which the horizontal swing arm 205 drives the angle gear 206 to rotate, it sets a threshold, such as 10 degrees. The encoder 203 then transmits this signal to the control system, which in turn sends the lifting motor 460 to operate, allowing the paper counting head to rise and return to the optimal working angle of the paper counting head 4. There are several possible implementation methods. For example, when the paper counting head assembly 100 rises, the encoder 203 can simultaneously sense the angle change. When the angle returns to 0 degrees, the control system sends a command to stop the motor, and so on.Alternatively, you can give the motor a specific speed and rotation time to raise the machine head to a predetermined height. Please refer to the following for details. Figure 14 , Figure 14 The first picture shows the normal angle when counting the paper. The second picture shows the head starting to tilt when the paper reaches a certain thickness, that is, the angle deflection occurs. The third picture shows the head adjusting the angle by rising.

[0046] refer to Figure 12-13 In a further embodiment, the cutting assembly 300 includes an upper blade holder 310, a lower blade holder 320, and an electromagnet 330. The lower blade holder 320 is hinged to one end of the upper blade holder 310. A tension spring 331 is connected to the upper end of the electromagnet 330. The other end of the tension spring 331 is connected to the upper blade holder 310 to pull the upper blade holder 310 downward for cutting. An upper cutter 311 is provided at the end of the upper blade holder 310. A lower cutter 321 is provided at the position of the upper cutter 311 on the lower blade holder 320. Here, both the upper cutter 311 and the lower cutter 321 are bevel cutters.

[0047] refer to Figure 12-13 In a further embodiment, the upper end of the upper cutter 311 is provided with a cutter limiting piece 312, and the upper end of the lower cutter holder 320 is provided with a cutter limiting groove 322. The cutter limiting piece 312 slides up and down within the cutter limiting groove 322. The lower end of the cutter limiting groove 322 is also provided with a label strip outlet 323. The upper end of the label strip outlet 323 is provided with a guide strip block 324. The guide strip block 324 is used to guide the label strip to the target paper gap at the moment the label strip is cut. Here, the guide strip block 324 has a certain upward curvature. When the whole is pressed downward, it can press the label strip with a certain curvature towards the paper gap. On the one hand, it prevents the label strip from flying away after being cut by the cutter, and on the other hand, it can guide it to be inserted into the designated paper gap.

[0048] refer to Figure 6In a further embodiment, the machine head lifting assembly 400 includes a lifting slide 410, a base plate 420, a top plate 430, a slide rod 440, a lead screw 450, and a lifting motor 460. The slide rod 440 and the lead screw 450 are provided between the base plate 420 and the top plate 430, wherein one end of the lead screw 450 is rotatably connected to the lifting motor 460. One end of the lifting slide 410 is fixedly connected to the machine head assembly 100 to drive the machine head assembly 100 to lift and lower, and the other end is slidably disposed on the slide. On the slide rod 440, the inner side of the lifting slide 410 is provided with a nut sleeve 411 that cooperates with the lead screw 450. When the lifting motor 460 rotates, it can drive the lead screw 450 to rotate, thereby driving the lifting slide 410 to rise and fall on the lead screw 450. Here, for more stable lifting, the slide rod 440 is provided with two rods. The shape of the slide rod 440 is preferably a square guide rail, and square guide grooves are provided on both sides of the lifting slide 410. In order to increase speed, pulley blocks can also be provided on the square guide grooves and guide rails.

[0049] refer to Figure 10 In a further embodiment, the paper pressing assembly 500 includes a pressing plate 510, a paper pressing lifting motor 520, a chain 530, a chain disc 540, a guide rail 550, a top plate 560, and a bottom plate 570. The guide rail 550 is installed between the top plate 560 and the bottom plate 570. The two sides of the pressing plate 510 slide and rise in cooperation with the guide rail 550 through guide sliders. The upper and lower ends of the chain 530 are respectively cooperated by two chain discs 540 to achieve closed-loop rotation. The chain 530 passes through and is fixed to one end of the pressing plate 510. When the paper pressing lifting motor 520 rotates, it can drive the chain disc 540 to rotate, thereby driving the pressing plate 510 to slide up and down through the chain 530, so as to control the pressing plate 510 to press and release the corresponding paper.

[0050] refer to Figure 5 In a further embodiment, the transmission assembly includes a main drive shaft 103, a secondary drive shaft 104, a head motor 105, and several rocker arm drive shafts 106. The main drive shaft 103 is connected to the output shaft of the head motor 105. The secondary drive shaft 104 and the rocker arm drive shafts 106 are both connected to the main drive shaft 103 via belt drive. The counting vane 5 and the angle vane 6 are both mounted on the main drive shaft 103 and rotate together with the main drive shaft 103. The secondary drive shaft 104 drives the label strip through a gear assembly. The head assembly 100 also includes side plates 107. The horizontal support rod 204 passes through the two side plates 107 and serves as the support and deflection shaft for the entire head assembly 100. The other end of the horizontal support rod is connected to a horizontal swing arm 205.

[0051] refer to Figure 11Specifically, traditional paper counting heads 4 also include a counter, resulting in a complex structure, high cost, difficulty in assembly, and susceptibility to damage. Furthermore, counting and peeling rely on two paper counting heads 4, requiring a separate air exchange valve for ventilation. This places a significant strain on the air compressor system of the paper counting machine, necessitating a higher compressor power, which hinders cost savings and subsequent maintenance. In contrast, this invention uses only one paper counting head 4 with a very simple structure. Specifically, the paper counting... The counting head 4 includes a main body with a ventilation groove 401, an air intake hole 402, and a paper insertion inclined surface 403. One end of the counting head 4 is fixedly connected to the end of the second rocker arm assembly 102. The two sides of the counting head 4 are hollowed out to form the ventilation groove 401, and a slot is opened on one side of the free end. One side is used to connect to the air pipe, and the other side is used for air intake. The air intake hole 402 is hollowed out on the upper and lower end faces of the counting head 4. Thus, two air intake holes 402 are provided and located on the upper and lower end faces. On the one hand, because this paper counting machine is composed of... Counting from bottom to top, the paper has a certain weight. When the first piece of paper is sucked up, the upper suction hole 402 of the counting head 4 contacts the bottom surface of the first piece of paper, sucking it down to create a certain gap. Then, the lever 3 is inserted to separate it into a certain gap. Then, the counting head 4 takes over and enters the gap. The upper surface of the counting head 4 contacts the lower surface of the second piece of paper and sucks it down to create a certain gap. At the same time, the lower suction hole 402 can also slightly suck the upper surface of the first piece of paper upward to restore its angle, because the first time it is sucked up... When it is bent down at a certain angle, it helps to restore the angle. Of course, the diameter of the lower air suction hole 402 is smaller than that of the upper air suction hole 402. In order to facilitate insertion into the gap of the paper, there is also a paper insertion slope 403. This paper insertion slope 403 is cut directly on two obliquely symmetrical parts on both sides of the paper suction head body. Therefore, the structure of this paper head 4 is very simple, easy to assemble, and it only needs one ventilation system. It does not need an air exchange valve, is not easy to break later, and has a very low production cost.

[0052] Traditionally, a limit switch is installed via an electrical wire in the paper pressing mechanism of the pressing plate 510. This requires installing limit switches at two positions on the upper and lower parts of the chain 530, necessitating wiring. While wiring is relatively easy in a stationary structure, the chain 530 rotates up and down, making wiring inconvenient and prone to jamming, affecting durability. Therefore, this invention discloses a lifting judgment mechanism for the pressing plate 510 in a paper counting machine, comprising a paper counting machine body, a paper pressing lifting motor 520, and a pressing plate 510. The pressing plate 510 is slidably mounted on the paper counting machine body. The paper pressing lifting motor 520 drives the pressing plate 510 to rise and fall. The mechanism also includes a speed sensor installed inside the paper pressing lifting motor 520, which senses changes in motor speed and transmits the electrical signal to a control board or control system. The judgment mechanism includes the following steps:

[0053] S1: When the paper counting command is issued, the control system issues a command to lower the pressure plate 510. The paper pressing lifting motor 520 drives the chain 530 to rotate, thereby causing the pressure plate 510 to slide and press against the upper surface of the paper to be counted.

[0054] S2: The instant the pressure plate 510 presses down on the upper surface of the paper to be counted, this time is defined as M1. The speed of the paper pressing lifting motor 520 changes slightly. This change is detected by the sensor. The slight change in speed is defined as Z1. The sensor transmits this change signal to the control system. The control system determines that the pressure plate 510 has touched the upper surface of the paper to be counted.

[0055] S3: The control system continues to operate the motor for a period of time after sensing M1, which is defined as M2. The operating speed of the motor in M2 is defined as Z2. When the motor has rotated through the speed of Z2 within the time of M2, the pressure plate 510 can just press the paper to be counted firmly so that the paper to be counted will not be loose when the machine head counts the paper.

[0056] S4: After the paper counting is completed, the paper pressing lifting motor 520 reverses and lifts the paper pressing board 510 back to its original position.

[0057] As described above, the present invention uses subtle changes in electronic signals to detect whether the pressure plate 510 is pressing on the paper. The structure and logic are simple, and the components are not easily damaged.

[0058] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A bottom-up, thick paper counting machine, comprising a frame, a worktable, a head assembly, a label paper conveying mechanism, a cutting assembly, a head lifting assembly, and a paper pressing assembly, wherein the head assembly is disposed on one side of the frame, the worktable is disposed on the other side of the frame, the label paper conveying mechanism conveys label paper to one side of the head assembly and cuts it by the cutting assembly, the head lifting assembly can drive the head assembly to rise and fall for paper counting, and the paper pressing assembly is located on one side of the worktable to press the paper to be counted, characterized in that: The head assembly includes a rocker arm assembly and a transmission assembly. The rocker arm assembly includes a first rocker arm assembly and a second rocker arm assembly. The transmission assembly drives the first rocker arm assembly and the second rocker arm assembly to perform a back-and-forth rocker arm movement. The end of the first rocker arm assembly is connected to a lever for spreading the paper, and the end of the second rocker arm assembly is connected to a paper counting head for holding the paper. The counting head is provided with a ventilation groove, an air intake hole and a paper insertion slope. One end of the counting head is fixedly connected to the end of the second rocker arm assembly. The two sides of the counting head are hollowed out to form ventilation grooves and a slot is opened on one side of the free end. The air intake hole is hollowed out on the upper and lower end surfaces of the counting head. The paper insertion slope is obliquely symmetrically arranged on both sides of the counting head. When the first sheet of paper is sucked up, the upper suction hole of the counting head contacts the bottom surface of the first sheet of paper and sucks it down to create a certain gap. Then the lever is inserted to separate it into a certain gap. Then the counting head takes over and enters the gap. The upper surface of the counting head contacts the lower surface of the second sheet of paper and sucks it down to create a certain gap. At the same time, the suction hole at the lower end of the counting head can suck the upper surface of the first sheet of paper up, so that the first sheet of paper returns to its original angle. The diameter of the air intake hole at the lower end of the paper head is smaller than the diameter of the air intake hole at the upper end of the paper head.

2. The bottom-up paper counting machine for large thicknesses as described in claim 1, characterized in that: It also includes a sensing mechanism, which comprises a photoelectric sensing component and a digital encoding component. The photoelectric sensing component includes a first photoelectric sensor switch, a counting rotor, a second photoelectric sensor switch, and an angle rotor. Both the counting rotor and the angle rotor are linked to the drive shaft of the rocker arm assembly. The first photoelectric sensor switch is used to record the number of rotations of the counting rotor to determine the number of papers to be counted. The second photoelectric sensor switch is used to sense and determine the position of each component in the rocker arm assembly to determine the working state of the rocker arm assembly. The digital encoding component includes an encoder, a horizontal support rotor, a horizontal swing arm, and an angle gear. The horizontal support rotor is connected to one end of the head assembly and rotates in conjunction with the head assembly. The horizontal swing arm is located at one end of the horizontal support rotor and rotates in conjunction with the horizontal support rotor. The angle gear is linked to the horizontal swing arm through a toothed engagement. The encoder is located on the other side of the gear. When the head assembly counts a certain number of papers and shifts upward at a certain angle, the rotation of the horizontal swing arm and the angle gear transmits the information to the encoder so that the system can determine whether the head needs to be raised.

3. A bottom-up paper counting machine for large thicknesses as described in claim 2, characterized in that: The counting plate includes a shielded end and an unshielded end. When the first photoelectric sensor detects a shielded signal on one side and an unshielded signal once, it is determined that the rocker arm assembly has completed one counting action. The angle plate includes an initial slot and a positioning slot. The initial slot is aligned with the area of ​​the shielded end of the counting plate near the unshielded end. The area of ​​the initial slot is larger than the area of ​​the positioning slot. When the first photoelectric sensor detects the shielded signal of the counting plate and the second photoelectric sensor detects an unshielded signal that lasts for a longer period, it is determined to be the original position of the rocker arm assembly. Based on this, the position of each component of the rocker arm assembly is determined when the second photoelectric sensor detects the position of other positioning slots.

4. A bottom-up paper counting machine for large thicknesses as described in claim 1, characterized in that: The cutting assembly includes an upper blade holder, a lower blade holder, and an electromagnet. The lower blade holder is hinged to one end of the upper blade holder. A tension spring is connected to the upper end of the electromagnet, and the other end of the tension spring is connected to the upper blade holder to pull the upper blade holder downward for cutting. An upper cutter is provided at the end of the upper blade holder, and a lower cutter is provided at the position corresponding to the upper cutter on the lower blade holder.

5. A bottom-up paper counting machine for large thicknesses as described in claim 4, characterized in that: The upper end of the upper cutter is provided with a cutter limiting piece, and the upper end of the lower cutter holder is provided with a cutter limiting groove. The cutter limiting piece slides up and down in the cutter limiting groove. The lower end of the cutter limiting groove is also provided with a label strip outlet. The upper end of the label strip outlet is provided with a guide block, wherein the guide block is used to guide the label strip to the gap of the target paper at the moment the label strip is cut.

6. A bottom-up paper counting machine for large thicknesses as described in claim 1, characterized in that: The machine head lifting assembly includes a lifting slide, a base plate, a top plate, a slide rod, a lead screw, and a lifting motor. The slide rod and lead screw are located between the base plate and the top plate. One end of the lead screw is rotatably connected to the lifting motor. One end of the lifting slide is fixedly connected to the machine head assembly to drive the machine head assembly to lift and lower, while the other end is slidably mounted on the slide rod. The inner side of the lifting slide is provided with a nut sleeve that cooperates with the lead screw. When the lifting motor rotates, it can drive the lead screw to rotate, thereby driving the lifting slide to lift and lower on the lead screw.

7. A bottom-up paper counting machine for large thicknesses as described in claim 1, characterized in that: The paper pressing assembly includes a paper pressing plate, a paper pressing lifting motor, a chain, a chain disc, a guide rail, a top connecting plate, and a bottom connecting plate. A guide rail is installed between the top connecting plate and the bottom connecting plate. The two sides of the paper pressing plate slide and rise and fall in cooperation with the guide rail via guide sliders. The upper and lower ends of the chain are respectively cooperated by two chain discs to achieve closed-loop rotation. The chain passes through and is fixed to one end of the paper pressing plate. When the paper pressing lifting motor rotates, it can drive the chain disc to rotate, thereby driving the paper pressing plate to slide up and down through the chain, so as to control the pressing and releasing of the paper pressing plate.

8. A bottom-up paper counting machine for large thicknesses as described in claim 2, characterized in that: The transmission assembly includes a main drive shaft, a secondary drive shaft, a head motor, and several rocker arm drive shafts. The main drive shaft is connected to the output shaft of the head motor. The secondary drive shaft and the rocker arm drive shaft are both connected to the main drive shaft via belt drive. The counting vane and the angle vane are both mounted on the main drive shaft and rotate together with it. The secondary drive shaft drives the label strip via a gear assembly. The head assembly also includes side plates. The horizontal support rod passes through the two side plates and serves as the support and deflection shaft for the entire head assembly. The other end of the horizontal support rod is connected to a horizontal swing arm.

9. A pressing plate lifting judgment mechanism applied to a paper counting machine, comprising a paper counting machine body, a pressing plate lifting motor and a pressing plate, wherein the pressing plate is slidably disposed on the paper counting machine body, and the pressing plate lifting motor can drive the pressing plate to lift and lower, characterized in that: It also includes a speed sensor installed inside the paper pressing and lifting motor, which can sense changes in the motor speed and transmit the electrical signal of the change to the control board or control system. The judgment mechanism includes the following steps: S1: When the paper counting command is issued, the control system issues a command to lower the pressure plate. The paper pressing lifting motor drives the chain to rotate, thereby causing the pressure plate to slide and press against the upper surface of the paper to be counted. S2: The instant the pressure plate presses down on the upper surface of the paper to be counted is defined as M1. The speed of the paper pressing lifting motor changes slightly. This change is detected by the sensor. The slight change in speed is defined as Z1. The sensor transmits this change signal to the control system. The control system determines that the pressure plate has touched the upper surface of the paper to be counted. S3: The control system continues to operate the motor for a period of time after sensing M1, which is defined as M2. The operating speed of the motor in M2 is defined as Z2. When the motor has rotated through the speed of Z2 within the time of M2, the pressure plate can just press the paper to be counted firmly so that the paper to be counted will not be loose when the machine head counts the paper. S4: After the paper counting is completed, the paper pressing lifting motor reverses and lifts the paper pressing board back to its original position.

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