Paper cup conveying device of paper cup forming machine

Abstract

The present invention discloses a paper cup conveying device for a paper cup forming machine, comprising a plurality of vacuum tubes for conveying formed paper cups and a conveying device for collecting stacked formed paper cups. Each of the vacuum tubes is connected to the conveying device via a pipeline connection mechanism. When the position of the forming device in the workshop needs to be adjusted, the vacuum tube does not need to be disassembled, and can be rotated and adjusted through a threaded structure, thereby saving time for disassembling the vacuum tube. In addition to the function of a traditional photoelectric sensor to identify the number of formed paper cups, a weight measurement function is added. Only when the numbers detected by the two are consistent will the stacked formed paper cups be lowered to a connecting seat for subsequent conveyance. In the case where two paper cups are nested, or the paper cups are damaged or notched, the change in weight can be used to determine whether the weight meets the preset number of paper cups, thereby achieving complete control over the standards of the formed paper cups.

Description

Technical Field

[0001] The present invention belongs to the field of paper cup forming equipment, and in particular relates to a paper cup conveying device of a paper cup forming machine. Background Art

[0002] Paper cup forming machine is a kind of mechanical equipment specially used for producing paper cups, which is widely used in food and beverage industry.

[0003] The paper cup forming machine includes a paper feeding device, a cutting device, a forming device and a conveying device. As for the conveying device, it is often through several installed vacuum pipes that rely on air pressure to transport the formed paper cups from the forming device of the production line to a collection bin for accumulation. The collection bin uses sensors to stack a preset number of formed paper cups, and then stores them on the conveyor belt for the subsequent packaging stage.

[0004] When installing vacuum pipes, they are often set up according to the locations of the molding and conveying devices in the workshop. If a molding device is added later to increase work output or the location of the molding device is adjusted by workshop renovation, the installed vacuum pipes need to be dismantled and re-planned and installed according to the current location. This not only increases the renovation time, but also affects production and causes additional economic expenses.

[0005] At the same time, for the sensors that count when collecting formed paper cups, although relying solely on photoelectric counting can maintain accurate measurement in most cases, it cannot accurately determine the number of paper cups when the speed is too fast or when two paper cups are stacked together during transportation. At the same time, for broken paper cups, the number detection is also carried out according to the standard paper cup number and cannot be identified, which puts a burden on the subsequent packaging process and increases the breakage rate. Summary of the Invention

[0006] To address the above drawbacks, the present invention provides a paper cup conveying device for a paper cup forming machine, comprising a plurality of vacuum tubes for conveying formed paper cups and a conveying device for collecting and stacking formed paper cups. Each vacuum tube is connected to the conveying device via a pipe connection mechanism. The pipe connection mechanism includes a steering tube for communication at a bend and a regulating tube for communication with the conveying device. A sensor for measuring the number of formed paper cups stored is installed on the regulating tube.

[0007] The conveying equipment includes a retention mechanism, a connecting seat and a recovery bin connected in sequence from top to bottom. The retention mechanism includes a measuring mechanism for weighing, verifying and conveying the stacked formed paper cups after being conveyed by the vacuum tube. A conduit for conveying the formed paper cups conveyed by the measuring mechanism is installed at the connecting seat. A discharge mechanism for recovering the formed paper cups conveyed by the conduit is installed on the top of the recovery bin. A conveying mechanism for conveying the formed paper cups conveyed by the discharge mechanism is installed inside the recovery bin.

[0008] Furthermore, the cross sections of the vacuum tube connection ends are inlaid with magnetic rings;

[0009] The regulating tube includes a tube body and a connecting ring, wherein the connecting ring is threadedly connected to the thread at the bottom of the inner ring of the tube body through a threaded layer opened on the outer ring, and four limiting posts distributed in an equidistant annular array are installed at the bottom of the connecting ring;

[0010] A slot adapted to the magnetic ring is provided on the top of the tube body, an annular magnet layer is embedded in the slot, and a sensor for detecting the number of formed paper cups passing through is embedded in the inner wall of the tube body.

[0011] Furthermore, the retention mechanism includes a top plate, a middle plate, and a bottom plate connected in sequence from top to bottom. The top plate is provided with a plurality of steering grooves corresponding to the conduits. The interior of each steering groove is hinged to the measuring mechanism via a hinged rod, and the hinged rod is driven by a steering motor installed at the bottom of the top plate.

[0012] The inner wall of the middle plate is fixed with a mounting bar for supporting the top plate, and the front of the middle plate is installed with a plurality of display panels corresponding to the steering slots and a brake switch for controlling the steering motor;

[0013] The bottom plate is fixed to the bottom of the middle plate and is provided with a plurality of drop openings respectively corresponding to the turning grooves.

[0014] Furthermore, the measuring mechanism includes a weighing panel and a steering ring. The steering ring is fixed to the hinged rod through a hinged seat at the rear end. The weighing panel is installed inside a placement groove opened inside the steering ring. An electromagnetic coil is installed at the bottom end of the inner ring of the placement groove. An annular electromagnet adapted to the electromagnetic coil is inlaid at the bottom end of the placement groove. A limit ring for limiting the weighing panel is fixed to the top of the placement groove.

[0015] Furthermore, each of the above-mentioned unloading mechanisms corresponds to the corresponding conduit at the top, and each unloading mechanism is installed inside the recovery bin. The upper surface of the recovery bin is provided with several unloading ports for each unloading mechanism to rotate, and the inner wall of each unloading port is fixed with a rubber brush strip for filling the gap between the unloading mechanism and the unloading mechanism.

[0016] Furthermore, each of the unloading mechanisms includes a transmission shaft, the front and rear ends of the transmission shaft are respectively connected to bearings embedded in the inner wall of the recovery bin, and the rear end of the transmission shaft passes through the back of the recovery bin and is connected to the driving mechanism. A triangular prism is fixed to the outer ring of the transmission shaft, and the three faces of the triangular prism are all concave surfaces for placing stacked formed paper cups, and the three edges of the triangular prism are fixed with an outward wing adapted to the concave surface.

[0017] Furthermore, a partition is fixed on the inner wall of the recovery bin, and a conveying channel for a conveying mechanism to pass through is opened in the middle of the partition. The conveying mechanism is a belt conveyor, and the conveying belt of the belt conveyor and the conveying channel are on the same horizontal plane, and the right side and bottom surface of the recovery bin are respectively provided with a through opening I and a through opening II for the conveying belt to pass through;

[0018] The inner wall of the recovery bin is movably connected with a set of converging side panels, the right ends of the two converging side panels are respectively in contact with the inner side walls of the through opening I, and one side of the through opening I is converging into a narrow opening by the through opening I.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. Compared with traditional vacuum tubes, when the position of the molding device in the workshop needs to be adjusted and the direction of the vacuum tube also needs to be adjusted accordingly, there is no need to disassemble it. The threaded structure can be used for rotation adjustment, which saves the time of disassembling the vacuum tube and ensures normal production capacity.

[0021] 2. In addition to the traditional photoelectric sensor's function of identifying the number of formed paper cups, a weight measurement function has been added. Only when the detected quantities are consistent will the stacked formed paper cups be lowered to the connecting base for subsequent transportation. In the event of two paper cups being nested, or a paper cup being damaged or chipped, the change in weight can be used to determine whether the preset number of paper cups is met, thus achieving complete control over the standards of the formed paper cups.

[0022] 3. By setting up gradually converging side panels, the loose stacked formed paper cups in the sliding process are gathered together to ensure that they will not fall during transportation on the subsequent conveyor belt. At the same time, it is convenient for subsequent manual observation of the standard length to determine the number of formed paper cups. At the same time, the converging width can be adjusted in real time according to the preset stacking quantity, which has good adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a perspective view of the present invention.

[0024] Figure 2 It is a structural schematic diagram of the regulating tube in the present invention.

[0025] Figure 3 It is a structural schematic diagram of the truncated state of the retention mechanism in the present invention.

[0026] Figure 4 It is a structural schematic diagram of the measuring mechanism in the present invention.

[0027] Figure 5 It is a cross-sectional view of the recovery bin in the present invention in the front view direction.

[0028] Figure 6 It is a three-dimensional diagram of the blanking mechanism in the present invention.

[0029] Figure 7 It is a cross-sectional view of the recovery bin in the present invention when viewed from above.

[0030] Figure 8 It is a perspective view of a straight-cylindrical catheter according to the present invention.

[0031] Figure 9 It is a perspective view of the cylindrical catheter in the present invention.

[0032] In the figure: 1. Retention mechanism; 101. Top plate; 102. Measuring mechanism; 1021. Weight measuring panel; 1022. Electromagnet; 1023. Steering ring; 1024. Placement slot; 1025. Electromagnetic coil; 1026. Stop ring; 103. Steering slot; 104. Articulated rod; 105. Steering motor; 111. Middle plate; 112. Mounting bar; 113. Display panel; 114. Brake switch; 121. Bottom plate; 122. Dropout; 2. Connecting seat; 3. Recovery bin; 4. Conveying mechanism; 5. Vacuum tube; 6. Pipe connection mechanism; 61. Steering tube; 62. Adjusting tube; 621. Tube body; 622. Connecting ring; 623. Limiting column; 624. Sensor; 625. Slot; 627. Threaded layer; 7. Converging side plate; 8. Partition; 9. Unloading mechanism; 91. Transmission shaft; 92. Triangular prism; 93. Concave surface; 94. Outward wings; 10. Unloading port; 11. Rubber brush strip; 12. Catheter; 13. Magnetic ring. DETAILED DESCRIPTION

[0033] To facilitate understanding of the present invention, the apparatus of the present invention will be described more fully below with reference to the accompanying drawings. The drawings illustrate embodiments of the apparatus. However, the apparatus can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0034] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "disposed" should be understood in a broad sense. For example, they may refer to fixed connection or disposition, detachable connection or disposition, or integral connection or disposition. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0035] Example

[0036] like Figure 1-2 As shown, this embodiment provides a paper cup conveying device for a paper cup forming machine, comprising a plurality of vacuum tubes 5 for conveying formed paper cups and a conveying device for collecting and stacking the formed paper cups. The vacuum tubes 5 are made of the same material as conventional vacuum pipes and are fixed to the ceiling of the workshop or a fixed frame by positioning clamps. A detailed description thereof will not be given here. Each vacuum tube 5 is connected to the conveying device via a pipe connection mechanism 6. The pipe connection mechanism 6 includes a steering tube 61 (i.e., a U-shaped bent tube) for connection at a bend and an adjustment tube 62 for connection to the conveying device.

[0037] like Figure 3 As shown, the adjustment tube 62 includes a tube body 621 and a connecting ring 622. The connecting ring 622 is threadedly connected to the threads at the bottom of the inner ring of the tube body 621 through a threaded layer 627 provided on the outer ring. Its function is not only to provide a movable connection, but also to adjust the direction of the vacuum tube 5 connected at the top according to the subsequent modification of the workshop by rotation. It should be noted that although the height difference formed by rotating the thread 360° is very small, for greater precision, a rubber pad can be added between the threaded layer 627 and the tube body 621 to adapt to the height difference through the rebound and compression of the rubber. The bottom end of the connecting ring 622 is equipped with four equidistant limiting posts 623 distributed in an annular array (similar to the traditional paper cup conveying structure, the formed paper cups pass through the channel formed between the limiting posts 623, which has a good limiting effect).

[0038] A slot 625 is provided at the top of the tube body 621 to match the magnetic ring 13. An annular magnet layer is embedded inside the slot 625. At the same time, the cross section of the connecting end of the vacuum tube 5 is embedded with a magnetic ring 13. The annular magnet layer and the magnetic ring 13 have opposite magnetic poles. When the pipelines are spliced, magnetic adsorption facilitates the docking of the two pipelines. The inner wall of the tube body 621 is embedded with a sensor 624 for detecting the number of formed paper cups passing through. The sensor 624 is a traditional photoelectric sensor that works by using the light beam between the transmitter and the receiver. When the formed paper cup passes through the sensor, it will block the light beam, thereby triggering the count. It should be noted that the sensor 624 should be on the inner wall of the tube body 621 to prevent it from protruding and contacting the paper cup, causing the posture of the paper cup to change and leading to transmission blockage.

[0039] The conveying device includes, from top to bottom, a retention mechanism 1, a connecting base 2, and a recovery bin 3. The retention mechanism 1 includes a measuring mechanism 102 that weighs, verifies, and conveys the stacked formed paper cups conveyed by the vacuum tube 5. The retention mechanism 1 includes, from top to bottom, a top plate 101, an intermediate plate 111, and a bottom plate 121. The top of the top plate 101 is provided with a plurality of steering grooves 103 corresponding to the conduits 12. Each steering groove 103 is hingedly connected to the measuring mechanism 102 via a hinged rod 104. The hinged rod 104 is driven by a steering motor 105 mounted on the bottom of the top plate 101.

[0040] The inner wall of the middle plate 111 is fixed with a mounting bar 112 for supporting the top plate 101, and the front of the middle plate 111 is installed with a number of display panels 113 corresponding to the steering slots 103 and a brake switch 114 for controlling the steering motor 105 (the steering motor 105 is a power-off holding type motor, that is, it has the function of automatic reset, and its operating angle can be set to 90°, so that it controls the measuring mechanism 102 to hinge and rotate downward to complete the unloading operation). The display panel 113 digitally displays the information detected and output by the sensor 624, and the brake switch 114 includes a manual button and a counting controller. The manual button is convenient for the staff to manually press to stop the operation of the steering motor 105 here, and the counting controller is based on the preset number value and corresponds to the sensor at the same time. The counting controller automatically controls the steering motor 105 to operate according to the values ​​calculated by the sensor 624 and the measuring mechanism 102. For example, if the preset number of the counting controller is 10, the number detected by the sensor 624 is 10, and the value calculated by the measuring mechanism 102 is 10 (counting is performed according to the set weight threshold), the counting controller automatically controls the steering motor 105 to operate. However, if the number detected by the sensor 624 is 10 and the value calculated by the measuring mechanism 102 is 9, the counting controller does not drive the steering motor 105 and issues an early warning at the same time. The early warning can be sent to the main control console by flashing the built-in LED bulb of the manual button, broadcasting by the built-in speaker, or by the built-in wireless transceiver module. This is to remind the staff to identify the stacked formed paper cups here, as there may be damaged paper cups that do not meet the standards.

[0041] like Figure 4As shown, the measuring mechanism 102 includes a weighing panel 1021 and a steering ring 1023. The steering ring 1023 is fixed to the hinge rod 104 through a hinge seat at the rear end. The weighing panel 1021 is installed inside a placement groove 1024 opened inside the steering ring 1023. An electromagnetic coil 1025 is installed at the bottom end of the inner ring of the placement groove 1024. An annular electromagnet 1022 adapted to the electromagnetic coil 1025 is embedded at the bottom end of the placement groove 1024. A limit ring 1022 for limiting the position of the weighing panel 1021 is fixed to the top of the placement groove 1024. 026, its working principle is: by quickly changing the direction of the current through the electromagnetic coil 1025, the top electromagnet 1022 is rhythmically shaken up and down, thereby shaking the stack of formed paper cups on the top, shaking the formed paper cups with gaps or uneven stacks into an orderly state, facilitating the subsequent neat and stable transportation. It should be noted that when the brake switch 114 controls the rotation motor 105 to operate, the power supply of the electromagnetic coil 1025 is synchronously controlled to be disconnected (this can be achieved by an additional controller receiving the electrical signal of the brake switch 114);

[0042] The bottom plate 121 is fixed to the bottom of the middle plate 111 and has a plurality of drop openings 122 corresponding to the turning grooves 103 , so as to facilitate the passage of the stacked formed paper cups that meet the standards and fall from the turning grooves 103 .

[0043] The connecting seat 2 is provided with a conduit 12 for transporting the formed paper cups transported by the measuring mechanism 102. Figure 8-9 As shown, the conduit 12 can be in a straight cylindrical shape or a round shape, with a notch on the front for easy observation, and the tube body is arc-shaped, and the stacked formed paper cups falling from the top of the edge slide to the corresponding unloading mechanism 9.

[0044] like Figure 5 As shown, a feeding mechanism 9 for recovering the formed paper cups conveyed by the conduit 12 is installed on the top of the recovery bin 3. A plurality of feeding ports 10 for each feeding mechanism 9 to rotate are provided on the upper surface of the recovery bin 3. Each feeding mechanism 9 corresponds to the corresponding conduit 12 at the top to receive the stacked formed paper cups. Each feeding mechanism 9 is installed inside the recovery bin 3 and rotates to convey the stacked formed paper cups received at the top downward, that is, to the conveying mechanism 4. A rubber brush strip 11 is fixed to the inner wall of each feeding port 10 for filling the gap between the feeding mechanism 9 and the feeding mechanism 9. The brush strip 11 fills the gap to prevent the paper cups from getting stuck there without affecting the normal rotation of the feeding mechanism 9.

[0045] like Figure 6As shown, each unloading mechanism 9 includes a transmission shaft 91, and the front and rear ends of the transmission shaft 91 are respectively connected to the bearings embedded in the inner wall of the recovery bin 3, and the rear end of the transmission shaft 91 passes through the back of the recovery bin 3 and is connected to a driving mechanism. The driving mechanism is a DC brushless motor, which rotates to make the stacked formed paper cups received by the unloading mechanism 9 fall. It should be noted that the rotation cycle of the DC brushless motor is 120° once, and it is driven by an external timing control switch. The timing control switch here is respectively connected to the brake switch 114 corresponding to the top, and the timing trigger time is set (in this embodiment, the timing control position 3S is used, that is, after the brake switch 114 controls the steering motor 105 to work, the electrical signal is transmitted to the timing control switch, and after 3S, the timing control switch controls the rotation of the DC brushless motor);

[0046] A triangular prism 92 is fixed to the outer ring of the transmission shaft 91. The three faces of the triangular prism 92 are all concave surfaces 93 for placing stacked formed paper cups. The three edges of the triangular prism 92 are fixed with an outward-spreading wing 94 that is adapted to the concave surface 93. It should also be noted that the stagnant state of the unloading mechanism 9 is that the two outward-spreading wings 94 are approximately parallel to the unloading port 10, that is, the two outward-spreading wings 94 are respectively in contact with the rubber brush strips 11 on both sides to ensure stable receiving operation.

[0047] A conveyor mechanism 4 for conveying formed paper cups transferred by a feeding mechanism 9 is installed inside the recycling bin 3. A partition 8 is fixed to the inner wall of the recycling bin 3. A conveyor channel for the conveyor mechanism 4 is opened in the middle of the partition 8. The conveyor mechanism 4 is a belt conveyor. The conveyor belt of the belt conveyor is on the same horizontal plane as the conveyor channel. The right side and bottom surface of the recycling bin 3 are respectively provided with through-holes I and II for the conveyor belt to pass through. The surface of the belt should be provided with texture to increase the friction between it and the paper cups.

[0048] like Figure 7 As shown, the inner wall of the recovery bin 3 is movably connected with a set of convergence side panels 7 (hinged by adjusting pins, the angle can be adjusted according to different stacking quantity requirements, and the exposed ends of the convergence side panels 7 are made of rubber to prevent the lack of deformation ability from affecting the passage of the formed paper cups). The right ends of the two convergence side panels 7 are respectively in contact with the inner side walls of the through-opening I, and the side located on the through-opening I is converged into a narrow opening by the through-opening I. The purpose is that when the formed paper cups that become loosely stacked during the falling process are transported through here, they are gradually integrated and aligned. When the quantity is consistent, the length formed should also be certain, which is convenient for subsequent observation by staff.

[0049] It should be noted that the structure described in the present invention can be implemented in a variety of different forms and is not limited to the described embodiments. Any equivalent transformations made by ordinary technicians in this field using the contents of the present invention description and drawings, or directly or indirectly applied to other related technical fields, such as the loading and unloading of other items, are included in the scope of protection of the present invention.

Claims

1. A paper cup conveying device for a paper cup forming machine, comprising a plurality of vacuum tubes for conveying formed paper cups and a conveying device for collecting stacked formed paper cups, characterized in that: Each of the vacuum tubes is connected to the conveying device via a pipe connection mechanism, wherein the pipe connection mechanism includes a steering tube for connecting at the bend and an adjustment tube for connecting with the conveying device, and a sensor for measuring the number of stored formed paper cups is installed on the adjustment tube; The regulating tube includes a tube body and a connecting ring, wherein the connecting ring is threadedly connected to the thread at the bottom of the inner ring of the tube body through a threaded layer opened on the outer ring, and four limiting posts distributed in an equidistant annular array are installed at the bottom of the connecting ring; The cross section of the connecting end of the vacuum tube is inlaid with a magnetic ring, the top of the tube body is provided with a slot adapted to the magnetic ring, the interior of the slot is inlaid with an annular magnet layer, and the inner wall of the tube body is inlaid with a sensor for detecting the number of formed paper cups passing through; The conveying equipment includes a retention mechanism, a connecting seat and a recovery bin connected in sequence from top to bottom. The retention mechanism includes a measuring mechanism for weighing, verifying and conveying the stacked formed paper cups after conveyance by the vacuum tube. The retention mechanism includes a top plate, an intermediate plate and a bottom plate connected in sequence from top to bottom. The top plate is provided with a plurality of steering grooves corresponding to the guide tubes respectively. The interior of each steering groove is hinged to the measuring mechanism via a hinged rod, and the hinged rod is driven by a steering motor installed at the bottom of the top plate. The inner wall of the intermediate plate is fixed with a mounting bar for supporting the top plate, and the front of the intermediate plate is installed with a plurality of display panels corresponding to the steering grooves and a brake switch for controlling the steering motor respectively. The bottom plate is fixed to the bottom of the intermediate plate and is provided with a plurality of drop openings corresponding to the steering grooves respectively. The measuring mechanism includes a weighing panel and a steering ring. The steering ring is fixed to the hinged rod through a hinged seat at the rear end. The weighing panel is installed in a placement slot opened inside the steering ring. The bottom end of the inner ring of the placement slot is installed with an electromagnetic coil that changes the direction of current when energized, so that the formed paper cup on the top shakes neatly. The bottom end of the placement slot is inlaid with a ring-shaped electromagnet that shakes up and down under the control of the electromagnetic coil. A limit ring for limiting the position of the weighing panel is fixed to the top of the placement slot. A conduit for transporting the formed paper cups transported by the measuring mechanism is installed at the connecting seat, a discharge mechanism for recovering the formed paper cups transported by the conduit is installed on the top of the recovery bin, and a conveying mechanism for transporting the formed paper cups transported by the discharge mechanism is installed inside the recovery bin.

2. The paper cup conveying device of the paper cup forming machine according to claim 1, characterized in that: Each of the unloading mechanisms corresponds to the corresponding conduit at the top, and each unloading mechanism is installed inside the recovery bin. The upper surface of the recovery bin is provided with several unloading ports for each unloading mechanism to rotate, and the inner wall of each unloading port is fixed with a rubber brush strip for filling the gap between the unloading mechanism and the unloading mechanism.

3. The paper cup conveying device of the paper cup forming machine according to claim 2, characterized in that: Each of the unloading mechanisms includes a transmission shaft, the front and rear ends of which are respectively connected to bearings embedded in the inner wall of the recovery bin, and the rear end of the transmission shaft passes through the back of the recovery bin and is connected to the driving mechanism. A triangular prism is fixed to the outer ring of the transmission shaft, and the three faces of the triangular prism are all concave surfaces for placing stacked formed paper cups, and the three edges of the triangular prism are fixed with an outward wing adapted to the concave surface.

4. The paper cup conveying device of a paper cup forming machine according to claim 1, characterized in that: A partition is fixed on the inner wall of the recovery bin, and a transmission channel for a transmission mechanism to pass through is opened in the middle of the partition. The transmission mechanism is a belt conveyor, and the transmission belt of the belt conveyor and the transmission channel are on the same horizontal plane. A through-hole I and a through-hole II for the transmission belt to pass through are respectively opened on the right side and bottom surface of the recovery bin; The inner wall of the recovery bin is movably connected with a set of converging side panels, the right ends of the two converging side panels are respectively in contact with the inner side walls of the through opening I, and one side of the through opening I is converging into a narrow opening by the through opening I.

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