Adjustable box opening and suction device

Abstract

The utility model belongs to packaging machinery technical field, concretely relates to adjustable open box pair suction device, is installed in full -automatic cartoning machine in set, and full -automatic cartoning machine is equipped with rack and rotating wheel disc, is equipped with dynamic side vacuum chuck group on rotating wheel disc, dynamic side vacuum chuck group is connected with vacuum air source, including adjustable fixed support assembly, fixed side vacuum chuck and control solenoid valve, adjustable fixed support assembly includes fixed base, hollow adjusting screw rod and locking piece, fixed base is fixed on the rack and is located the opposite side of rotating wheel disc open box station, hollow adjusting screw rod is connected with fixed base thread, locking piece is set on hollow adjusting screw rod, fixed side vacuum chuck is sealedly installed in one end of hollow adjusting screw rod towards rotating wheel disc, and the gas path of fixed side vacuum chuck is communicated with the inner chamber of hollow adjusting screw rod. The device can solve the uneven stress problem of carton caused by unilateral collision and extrusion in the prior art, and realize rapid change of multi-specification carton.

Description

Technical Field

[0001] This utility model belongs to the field of packaging machinery technology, specifically relating to an adjustable box-opening suction device. Background Technology

[0002] Currently, fully automatic horizontal cartoning machines are widely used in the automated packaging of bottled pharmaceuticals. Their opening process typically employs a rotary three-head vacuum suction cup mechanism combined with a rubbing-collision opening structure. An encoder controls three sets of suction cups on a rotating disc to alternately and continuously pick up boxes, relying on the physical collision and compression between a fixed mechanical stop on the frame and the cardboard box to achieve opening and shaping. This rubbing-collision opening structure is well-suited for rectangular cardboard boxes with significant aspect ratio differences, and its simple structure and low manufacturing cost make it the current industry standard. However, in actual production applications, especially for the square cardboard boxes commonly used in bottled pharmaceuticals, this structure has a series of technical drawbacks: First, the opening yield is low, and opening failures are common. The rubbing-collision opening mechanism can only apply collision and compression force to one side of the cardboard box, resulting in uneven stress on the entire box. During the opening process, creases and misalignment, and box folding are easily caused, requiring frequent machine stops for manual intervention, severely disrupting the production cycle and reducing the effective operating rate of the equipment. Second, it has poor adaptability to various cardboard box specifications, making changes and adjustments difficult. For cardboard boxes of different specifications and sizes, the existing structure requires repeated manual adjustments to the installation position and limiting angle of the mechanical stops, and sometimes even requires replacing the stops with different sizes to make them compatible. This adjustment is time-consuming and inaccurate, making rapid changeover for multiple cardboard box specifications impossible. Furthermore, it has extremely poor compatibility with the multi-variety, small-batch bottled drug production model in the pharmaceutical industry. Thirdly, the cardboard box damage rate is high, resulting in significant material waste. The swipe-and-collision opening method relies on the hard contact between the mechanical stops and the cardboard box to open it. During the opening process, it easily causes scratches on the cardboard box surface, bending and tearing of folded edges, and deformation of the box body, rendering the damaged cardboard boxes unusable and increasing packaging material waste and production costs.

[0003] Chinese patent CN221498638U discloses a novel packaging box opening device. This device includes a linear reciprocating mechanism and a first suction cup. A first drive shaft and a second drive shaft are respectively mounted on the sliding plate of the linear reciprocating mechanism. One end of each drive shaft is connected to a first and a second power source, respectively, and the other end is connected to a second suction cup bracket and a first suction cup bracket. The first suction cup bracket includes two first swing arms, two first uprights, and a first connecting seat. The first suction cup is connected to the first connecting seat via a first base plate. The second suction cup bracket includes two sets of second swing arms, a second upright, and a second connecting seat. The second connecting seat is fixed to the upper end of the second upright and can reciprocate under the drive of the second suction cup bracket. A second suction cup is mounted on the second connecting seat via a second base plate to assist the first suction cup in completing the opening action. This patent ensures that packaging boxes of various shapes can be opened smoothly, has strong versatility, and can improve the production rate of box opening operations. However, this patent adopts a single-cycle step-by-step operation mode, in which a servo motor drives a sliding plate to complete one linear reciprocating motion. It can only realize the entire process of picking up, opening, and delivering a single packaging box, which is a typical intermittent operation. It can only be adapted to the scenario of opening large-size, low-frequency packaging boxes, and cannot be adapted to the needs of high-speed continuous boxing production. Utility Model Content

[0004] The purpose of this invention is to provide an adjustable box opening and suction device that can solve the problems of uneven force on the paper box, misaligned creases, and box folding caused by unilateral collision and squeezing in the prior art, so as to realize the rapid change of paper boxes of various specifications and improve the adaptability of equipment.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] An adjustable carton opening and suction device is installed in conjunction with a fully automatic cartoning machine. The fully automatic cartoning machine has a frame and a rotating wheel. The rotating wheel is equipped with a moving-side vacuum suction cup assembly, which is externally connected to a vacuum source. The assembly includes an adjustable fixed bracket assembly, a fixed-side vacuum suction cup, and a control solenoid valve. The adjustable fixed bracket assembly includes a fixed base, a hollow adjusting screw, and a locking component. The fixed base is fixed to the frame and located on the opposite side of the carton opening position on the rotating wheel. The hollow adjusting screw is threadedly connected to the fixed base. The locking component is sleeved on the hollow adjusting screw. The fixed-side vacuum suction cup is sealed and installed at the end of the hollow adjusting screw facing the rotating wheel. The air passage of the fixed-side vacuum suction cup is connected to the inner cavity of the hollow adjusting screw, and the inner cavity of the hollow adjusting screw is connected to the vacuum source. The control solenoid valve is connected in series in the air passage between the fixed-side vacuum suction cup and the vacuum source.

[0007] Furthermore, at least three sets of moving-side vacuum suction cups are evenly installed circumferentially on the rotating disk. Each set of moving-side vacuum suction cups includes at least one moving-side vacuum suction cup, which is connected to a vacuum source through a pneumatic rotary joint located at the center of the rotating disk.

[0008] Furthermore, when the moving-side vacuum suction cup assembly rotates with the rotating wheel to the box opening station, the adsorption surface of the fixed-side vacuum suction cup is coaxially aligned with the adsorption surface of the moving-side vacuum suction cup.

[0009] Furthermore, the fixed base includes an integrally formed vertical plate and a horizontal plate, the horizontal plate being fastened to the frame, and the vertical plate having an adjustment through hole with internal threads.

[0010] Furthermore, the outer wall of the hollow adjusting screw is provided with an external thread that matches the internal thread of the adjusting through hole. The hollow adjusting screw passes through the adjusting through hole, and the hollow adjusting screw and the fixed seat form a threaded transmission engagement.

[0011] Furthermore, the locking component is a locking nut, which engages with the external thread of the hollow adjusting screw, and the end face of the locking nut abuts against the side wall of the vertical plate.

[0012] Furthermore, the control solenoid valve includes a solenoid pilot head and a main valve body. The solenoid pilot head is fixed to the top of the main valve body, and the main valve body has an air inlet, a working port, and an exhaust port. The air inlet and the exhaust port are both connected to the working port.

[0013] Furthermore, the air inlet is connected to the vacuum air source, and the working port is connected to the inner cavity of the hollow regulating screw.

[0014] Furthermore, a muffler is fixedly installed inside the exhaust port.

[0015] Furthermore, the main valve body is fixed on the frame, and a control cable is installed on the electromagnetic pilot head, which is electrically connected to a PLC controller.

[0016] The beneficial effects of this utility model are as follows:

[0017] This invention utilizes a fixed-side vacuum suction cup positioned opposite the moving-side vacuum suction cup assembly. Together with the moving-side vacuum suction cup assembly, they adsorb opposite sides of the cardboard box, evenly opening the box with a bidirectional, synchronous, flexible pulling force. This solves the problems of crease misalignment and box folding caused by uneven force on one side in existing rubbing-type box-opening structures. It reduces downtime and manual intervention due to box-opening failures, ensuring continuous and stable production rhythm and significantly improving the effective operating rate of the equipment. Through the threaded engagement structure of the hollow adjusting screw and the fixed base, the fixed-side vacuum suction cup and the rotating wheel can be adjusted by rotating the hollow adjusting screw. The adjustable spacing allows for the selection of square cardboard boxes of varying widths and sizes without requiring replacement of parts or repeated disassembly and adjustment of the original mechanical blocks. The adjustment process is convenient and adaptable to the pharmaceutical industry's demand for multi-variety, small-batch bottled drug production. Furthermore, the flexible vacuum suction opening mechanism replaces the traditional method of hard contact between the mechanical blocks and the cardboard box. During the opening process, there is no relative sliding or hard compression between the suction cup and the cardboard box surface, preventing surface scratches, edge bending, damage, and box deformation, thus reducing the defect rate and production costs of the packaging boxes. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0019] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 This is a schematic diagram of the control solenoid valve in this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the fixing base in this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0023] In the picture:

[0024] 1. Frame; 2. Rotary wheel; 3. Fixed-side vacuum suction cup; 4. Control solenoid valve; 401. Electromagnetic pilot head; 402. Main valve body; 5. Fixed base; 501. Vertical plate; 502. Horizontal plate; 6. Hollow adjusting screw; 7. Locking component; 8. Moving-side vacuum suction cup. Detailed Implementation

[0025] The present invention will now be described and illustrated in detail with reference to the embodiments.

[0026] Example 1

[0027] like Figure 1-5As shown, the adjustable carton opening suction device is installed in conjunction with a fully automatic cartoning machine. The fully automatic cartoning machine has a frame 1 and a rotating wheel 2. The rotating wheel 2 is equipped with a moving-side vacuum suction cup assembly, which is externally connected to a vacuum source. The moving-side vacuum suction cup assembly includes an adjustable fixed bracket assembly, a fixed-side vacuum suction cup 3, and a control solenoid valve 4. The adjustable fixed bracket assembly includes a fixed seat 5, a hollow adjusting screw 6, and a locking component 7. The fixed seat 5 is fixed to the frame 1 and located on the opposite side of the carton opening position of the rotating wheel 2. The hollow adjusting screw 6 is threadedly connected to the fixed seat 5. The locking component 7 is sleeved on the hollow adjusting screw 6. The fixed-side vacuum suction cup 3 is sealed and installed at the end of the hollow adjusting screw 6 facing the rotating wheel 2. The air passage of the fixed-side vacuum suction cup 3 is connected to the inner cavity of the hollow adjusting screw 6, and the inner cavity of the hollow adjusting screw 6 is connected to the vacuum source. The control solenoid valve 4 is connected in series in the air passage between the fixed-side vacuum suction cup 3 and the vacuum source.

[0028] At least three sets of moving-side vacuum suction cups are evenly installed around the circumference of the rotating wheel 2. Each set of moving-side vacuum suction cups includes at least one moving-side vacuum suction cup 8. The moving-side vacuum suction cup 8 is connected to the vacuum source through a pneumatic rotary joint set at the center of the rotating wheel 2.

[0029] When the moving side vacuum suction cup assembly rotates with the rotating wheel 2 to the box opening station, the adsorption surface of the fixed side vacuum suction cup 3 and the adsorption surface of the moving side vacuum suction cup 8 are set coaxially opposite each other.

[0030] The fixed base 5 includes an integrally formed vertical plate 501 and a horizontal plate 502. The horizontal plate 502 is fastened to the frame 1, and the vertical plate 501 has an adjustment through hole with internal thread.

[0031] The outer wall of the hollow adjusting screw 6 is provided with an external thread that matches the internal thread of the adjusting through hole. The hollow adjusting screw 6 passes through the adjusting through hole, and the hollow adjusting screw 6 and the fixed seat 5 form a threaded transmission engagement.

[0032] The locking component 7 is a locking nut, which engages with the external thread of the hollow adjusting screw 6, and the end face of the locking nut abuts against the side wall of the vertical plate 501.

[0033] The control solenoid valve 4 includes a solenoid pilot head 401 and a main valve body 402. The solenoid pilot head 401 is fixed to the top of the main valve body 402. The main valve body 402 has an air inlet, a working port and an exhaust port. The air inlet and the exhaust port are connected to the working port.

[0034] The air inlet is connected to the vacuum air source, and the working port is connected to the inner cavity of the hollow regulating screw 6.

[0035] A muffler is fixedly installed inside the exhaust port.

[0036] The main valve body 402 is fixed on the frame 1, and a control cable is provided on the electromagnetic pilot head 401. The control cable is electrically connected to the PLC controller.

[0037] Working process and principle:

[0038] Before operation, the initial installation of the device is completed. The horizontal plate 502 of the fixed base 5 is fastened to the frame 1 of the fully automatic cartoning machine, so that the fixed base 5 is located on the opposite side of the opening station of the rotating wheel 2, providing a stable installation base for subsequent suction opening. According to the width of the carton to be produced, the hollow adjusting screw 6 is rotated. Through the threaded transmission between the hollow adjusting screw 6 and the adjusting through hole on the vertical plate 501 of the fixed base 5, the axial displacement of the hollow adjusting screw 6 is adjusted so that the distance between the fixed side vacuum suction cup 3 and the rotating wheel 2 matches the width of the carton. After adjustment, the locking part 7 sleeved on the hollow adjusting screw 6 is tightened so that the end face of the locking part 7 abuts against the side wall of the vertical plate 501, completing the axial locking of the hollow adjusting screw 6 and preventing displacement deviation during operation.

[0039] The main valve body 402 of the control solenoid valve 4 is fixed on the frame 1. The air inlet of the main valve body 402 is connected to the vacuum air source, and the working port is connected to the inner cavity of the hollow adjusting screw 6 through the pneumatic pipeline. The control cable led out from the electromagnetic pilot head 401 is electrically connected to the PLC controller of the cartoning machine. The PLC controller is also connected to the encoder signal of the cartoning machine to achieve precise synchronization between the opening action and the rotation angle of the rotating wheel 2.

[0040] After the cartoning machine is started, the rotating wheel 2 rotates continuously under the drive mechanism. The three sets of moving side vacuum suction cups evenly arranged in the circumferential direction of the rotating wheel 2 rotate synchronously with the rotating wheel 2. The moving side vacuum suction cups 8 of each set of moving side vacuum suction cups are connected to the vacuum source through the pneumatic rotary joint in the center of the rotating wheel 2. They sequentially pick up folded cartons from the box compartment, complete the continuous box picking action, and are transported to the box opening station with the rotating wheel 2.

[0041] When the moving-side vacuum suction cup 8, which holds the folded cardboard box, rotates with the rotating wheel 2 to the box opening station, the cartoning machine encoder feeds back the angle signal of the rotating wheel 2 to the PLC controller in real time. The PLC controller immediately sends an energizing signal to the control solenoid valve 4, so that the air inlet and the working port are connected. The negative pressure of the vacuum source is transmitted to the fixed-side vacuum suction cup 3 through the inner cavity of the hollow adjusting screw 6. The fixed-side vacuum suction cup 3 instantly adheres to the other side of the folded cardboard box opposite to the moving-side vacuum suction cup 8.

[0042] At this time, the moving-side vacuum suction cup 8 continues to rotate with the rotating wheel 2, while the fixed-side vacuum suction cup 3 remains in a fixed adsorption state. Through bidirectional synchronous flexible tension, the two evenly open the cardboard box along the preset creases, completing the box opening and forming action. This suction-assisted opening method completely abandons the original rubbing-type opening structure with its single-sided collision and squeezing, solving the problems of crease misalignment and box folding caused by uneven force on one side of the square cardboard box. It reduces machine downtime and manual intervention due to opening failures, ensuring continuous and stable production rhythm. At the same time, the flexible opening mode of vacuum adsorption ensures that there is no relative sliding or hard squeezing between the suction cup and the cardboard box surface during the opening process, avoiding appearance defects such as scratches, folded edges, and box deformation, effectively reducing the defect rate and production loss costs of packaging boxes.

[0043] When the rotating wheel 2 rotates to the preset opening completion angle, the PLC controller immediately sends a power-off signal to the control solenoid valve 4, connecting the working port and the exhaust port. The air path of the fixed-side vacuum suction cup 3 quickly breaks the vacuum, the suction force disappears, and the formed paper box is smoothly released. The moving-side vacuum suction cup 8 continues to suction the formed paper box, and as the rotating wheel 2 continues to rotate, it transports the paper box to the subsequent medicine bottle insertion and edge folding and sealing process, completing a single opening cycle.

[0044] The rotating wheel 2 rotates continuously, and the three sets of moving-side vacuum suction cups sequentially complete the entire process of picking up, opening, and delivering the box, achieving fully automatic and continuous high-speed box opening operations. When it is necessary to change the specifications of the produced paper boxes, simply loosen the locking piece 7 and rotate the hollow adjusting screw 6 to adjust the axial position of the fixed-side vacuum suction cup 3 to quickly complete the changeover adaptation without any modifications to the main body of the equipment.

Claims

1. An adjustable open-box suction device, which is installed on a full-automatic box packing machine, the full-automatic box packing machine is provided with a rack (1) and a rotating wheel disc (2), the rotating wheel disc (2) is provided with a dynamic-side vacuum suction disc group, and the dynamic-side vacuum suction disc group is connected with a vacuum air source, characterized in that, The assembly includes an adjustable fixed bracket assembly, a fixed-side vacuum suction cup (3), and a control solenoid valve (4). The adjustable fixed bracket assembly includes a fixed seat (5), a hollow adjusting screw (6), and a locking element (7). The fixed seat (5) is fixed on the frame (1) and located on the opposite side of the opening position of the rotating wheel (2). The hollow adjusting screw (6) is threadedly connected to the fixed seat (5). The locking element (7) is sleeved on the hollow adjusting screw (6). The fixed-side vacuum suction cup (3) is sealed and installed at the end of the hollow adjusting screw (6) facing the rotating wheel (2). The air passage of the fixed-side vacuum suction cup (3) is connected to the inner cavity of the hollow adjusting screw (6). The inner cavity of the hollow adjusting screw (6) is connected to the vacuum source. The control solenoid valve (4) is connected in series in the air passage between the fixed-side vacuum suction cup (3) and the vacuum source.

2. The adjustable box-opening suction device according to claim 1, characterized in that, At least three sets of moving side vacuum suction cups are evenly installed around the rotating wheel (2). Each set of moving side vacuum suction cups includes at least one moving side vacuum suction cup (8). The moving side vacuum suction cup (8) is connected to the vacuum source through a pneumatic rotary joint set in the center of the rotating wheel (2).

3. The adjustable box-opening suction device according to claim 2, characterized in that, When the moving side vacuum suction cup assembly rotates with the rotating wheel (2) to the box opening station, the adsorption surface of the fixed side vacuum suction cup (3) and the adsorption surface of the moving side vacuum suction cup (8) are set coaxially opposite each other.

4. The adjustable box-opening suction device according to claim 1, characterized in that, The fixed base (5) includes an integrally formed vertical plate (501) and a horizontal plate (502). The horizontal plate (502) is fastened to the frame (1), and the vertical plate (501) is provided with an adjustment through hole with internal thread.

5. The adjustable box-opening suction device according to claim 4, characterized in that, The outer wall of the hollow adjusting screw (6) is provided with an external thread that matches the internal thread of the adjusting through hole. The hollow adjusting screw (6) passes through the adjusting through hole and forms a threaded transmission fit with the fixed seat (5).

6. The adjustable box-opening suction device according to claim 5, characterized in that, The locking component (7) is a locking nut, which engages with the external thread of the hollow adjusting screw (6), and the end face of the locking nut abuts against the side wall of the vertical plate (501).

7. The adjustable box-opening suction device according to claim 1, characterized in that, The control solenoid valve (4) includes a solenoid pilot head (401) and a main valve body (402). The solenoid pilot head (401) is fixed on the top of the main valve body (402). The main valve body (402) has an air inlet, a working port and an exhaust port. The air inlet and the exhaust port are connected to the working port.

8. The adjustable box-opening suction device according to claim 7, characterized in that, The air inlet is connected to the vacuum air source, and the working port is connected to the inner cavity of the hollow regulating screw (6).

9. The adjustable box-opening suction device according to claim 7, characterized in that, A muffler is fixedly installed inside the exhaust port.

10. The adjustable box-opening suction device according to claim 7, characterized in that, The main valve body (402) is fixed on the frame (1), and a control cable is provided on the electromagnetic pilot head (401). The control cable is electrically connected to the PLC controller.

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