Bale press

Abstract

The utility model relates to packing operation and equipment, disclose a kind of packing machine, the rack of this packing machine is arranged two variable volume cuboid material box side by side, material box includes the open box of being located on fixed bottom plate and having discharge port in one side with fixed bottom plate, fixed side plate, main push plate and small push plate, the top of box is the openable and closeable cover plate of adaptation box cavity maximum volume state;The main push plate of two material boxes is connected with each other and can be simultaneously driven by compression driving device and synchronously translated on fixed bottom plate, the small push plate of material box is driven by independent packing driving device respectively, the distance of the closest fixed side plate reached by main push plate is less than the width of small push plate, and the rack can be supported by weighing sensor.Two material boxes can alternately complete material filling and compression, packing step, share a compression driving device, save space, simplify device structure, reduce cost, especially suitable for grass, leaf material ration packing when using.

Description

Technical Field

[0001] This invention relates to a machine suitable for baling tobacco leaves or the like. Background Technology

[0002] Currently, before tobacco, herbs, and other products enter the factory processing stage, corresponding collection points are often set up in various places for centralized weighing and collection, which requires the use of weighing and packaging equipment.

[0003] CN211268613U discloses a combined tobacco leaf weighing and baling machine, which uses turnover boxes and five workstations for loading tobacco leaves, weighing, waiting to be baled, baling and unpacking to complete the operations of loading leaves, weighing and baling. The equipment occupies a large area and requires the use of turnover boxes.

[0004] CN220743612U discloses a semi-automatic tobacco leaf metering and combination baling machine; it includes a hydraulic baling machine, which comprises a frame, a support plate, a top frame, a hydraulic device, a compaction device, adjustable support feet, and an electrical control box. The adjustable support feet are installed at the four corners of the frame, and the support plate is installed opposite each other on the left and right sides of the frame. The top of the support plate is fixed to the top of the top frame. The compaction device and the hydraulic device are installed on the top frame. The hydraulic device provides the power source for the compaction device. A movable bale box is also provided on the frame. A bale box exit ramp is provided on one side of the hydraulic baling machine, and a bale box entry ramp is provided on the other side in sequence, consisting of a bale box waiting platform, a weighing and metering platform, and a bale box entering ramp.

[0005] CN222081008U discloses a combined tobacco leaf weighing and baling machine, including a main body of the equipment. The top surface of the main body of the equipment is provided with a weighing station for weighing and bundling tobacco leaves and a baling station for compressing and baling the bundled tobacco leaves. The weighing and bundling of tobacco leaves are completed at the weighing station, and the bundled tobacco leaves are pushed to the baling station for compression and baling.

[0006] CN116062262A discloses a turnover box type combined tobacco leaf weighing and baling machine, but it still has the problem of large footprint and the need to use turnover boxes.

[0007] CN221477809U discloses a tobacco leaf weighing and baling machine with a separate sensor and support walking device, which integrates weighing and baling into one device, and the weighing chamber is also the baling chamber, which is more convenient.

[0008] CN216685162U discloses a tobacco leaf baling machine, comprising a frame, a fixed hopper, a sliding hopper, a vertical pressing device, a finished product pushing device, and a discharge channel. The sliding hopper is equipped with guide rods and a drive mechanism. One side of the finished product pushing device has an automatically retractable sliding door, and the discharge channel has a floating cover. A set weight of tobacco leaves is placed in the hopper. The sliding hopper moves to a fixed position, the vertical pressing device compresses and bales the leaves downwards, the sliding hopper retracts, the sliding door extends to secure the tobacco bale, and the finished product pushing device pushes the bale out, which then passes through the discharge channel into a burlap sack. This design eliminates the need for a transfer box; the compressed and baleed tobacco leaves directly enter the burlap sack.

[0009] CN222737258U also discloses a baling machine that compresses tobacco leaves horizontally, but there is still a need to further improve its operating efficiency.

[0010] CN222109226U discloses a tobacco leaf pneumatic baling machine, including a baling frame and a pressure component. This utility model adopts a dual-chamber baling method, and the pressure component for compacting the tobacco leaves can rotate. When one working chamber is performing compaction, the other working chamber can perform bundling; then the two working chambers work alternately, thereby improving the baling efficiency.

[0011] CN212290484U discloses an intelligent tobacco baling machine that automatically packs and seals tobacco leaves. It works with a tobacco loading cart with a movable base plate to compress and pack the tobacco leaves and automatically seal the edges. However, the mechanism is complex and the burlap sacks containing tobacco leaves are difficult to keep stable during the sealing process.

[0012] In view of the above-mentioned existing technologies, it is necessary to design a dual-cavity packing machine to improve the efficiency of packing operations, while minimizing manufacturing costs and facilitating operation. Utility Model Content

[0013] The technical problem to be solved by this utility model is to provide a packaging machine with high operating efficiency and low manufacturing cost.

[0014] The technical solution adopted by this utility model to solve its technical problem is: a baling machine, including a frame, on which a cuboid-shaped variable-volume material box is set. Two material boxes are arranged side by side on the frame. The material box includes an open box body located on the fixed base plate and having a discharge port on one side, which is surrounded by a fixed base plate, a fixed side plate, a main push plate and a small push plate. The fixed side plate is opposite to the main push plate, and the small push plate is opposite to the discharge port. A feed port is set on the top of the box body. The feed port is equipped with an openable and closable cover plate adapted to the maximum volume of the box body cavity. The main push plates of the two material boxes are connected to each other and can be driven simultaneously by a compression drive device to move synchronously on the fixed base plate. The small push plates of the two material boxes are driven by independent bale discharge drive devices. In this type of baler, two hoppers are arranged side-by-side. While compressing material in one hopper, material can be discharged from the other. Both hoppers are driven by the same main push plate, which moves synchronously. Although the hoppers are arranged side-by-side, existing technologies use vertical compression. This requires repeatedly switching the positions of the pressure plate and its drive mechanism, which is time-consuming and labor-intensive. Horizontal compression combined with the dual-hopper drive arrangement utilizes the change in volume between the two hoppers during compression. Compared to simply driving each hopper separately, this saves on overall machine size, is more rational, provides more balanced force on the push plate, improves stability, and simplifies the structure, saving costs. If the two hoppers share a single main push plate, although the overall machine size is smaller, the drive mechanism for the main push plate can only be placed above the push plate, inevitably affecting the loading of one hopper and the opening and closing of the feed inlet cover.

[0015] As mentioned earlier, in the case of horizontal compression with a dual-box configuration, the use of two main push plates is still the better choice. To make full use of the frame space, the compression drive device can be arranged between the two main push plates, and the output shaft of the compression drive device being parallel to the main push plate will save more space. There is no precedent for the compression power and transmission arrangement under this arrangement. In order to facilitate the arrangement and withstand a large torque, the compression drive device is connected to the first rotating shaft, and the first rotating shaft is connected to the lead screw through a worm gear reducer. The lead screw is connected between the two main push plates.

[0016] To increase the rigidity of the main push plate, facilitate its arrangement, and withstand larger torques, the compression drive device is connected to the first rotating shaft. The first rotating shaft is synchronously connected to the second rotating shaft via a connecting shaft. Two lead screws are fixed side by side between the two main push plates. The first and second rotating shafts are respectively connected to one of the lead screws via the same worm gear reducer.

[0017] The distance that the main push plate can reach closest to the fixed side plate is less than the width of the small push plate, allowing the main push plate to retract to a certain extent after compressing the material to its limit. This allows the material to expand, thus greatly reducing the resistance of the small push plate in pushing out the compressed material. The packing drive device connected to the small push plate can be a low-power drive device, further saving costs.

[0018] To enable weighing during packaging, the frame is supported by a weighing sensor. The weighing sensor, compression drive device, and packing drive device are electrically connected to the electrical control box, which is mounted on the frame. A weighing display that is electrically connected to the weighing sensor is also mounted on the frame.

[0019] When the frame is not supported by a weighing sensor, it does not have a weighing function, and the weight of the material cannot be weighed by the packing machine. However, the efficiency of the packing operation can still be improved by using two material bins alternately. It is suitable for occasions where there is only a packing requirement but no weighing requirement.

[0020] To facilitate the packaging of compressed materials, the discharge port is configured as a rectangular tube connected to the box body, and a bag-pressing device is provided at the top of the rectangular tube. Before the small pusher plate pushes the material to the discharge port, a filling bag can be placed on the rectangular tube and fixed to the rectangular tube by the bag-pressing device.

[0021] The beneficial effects of this utility model are: the two material bins can alternately complete the material filling, compression, and unpacking steps, and can share a single drive device to complete the compression, saving space, simplifying the device structure, and reducing costs. It is especially suitable for quantitative packaging of solid materials such as herbs and tobacco leaves. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure (front view) of the weighing and baling machine of this utility model.

[0023] Figure 2 This is a schematic diagram of the overall structure of the weighing and baling machine of this utility model from another view (top view) (two cover plates omitted).

[0024] Figure 3 This is a schematic diagram of the overall structure of the weighing and baling machine of this utility model from another view (left view) (a cover plate is omitted).

[0025] Figure 4 yes Figure 3 A magnified view of part K in the middle.

[0026] The diagram is labeled as follows: 1-Frame, 2-Main push plate one, 3-Cover plate one, 4-Bag one, 5-Small push plate one, 6-Handle lock, 7-Worm gear reducer, 8-Screw, 9-Coupling, 10-Motor, 11-Electric push rod one, 12-Connecting shaft, 13-Weighing indicator, 14-Electric control box, 15-Weighing sensor, 16-Bag two, 17-Small push plate two, 18-Electric push rod two, 19-Cover plate two, 20-Main push plate two, 21-Bag pressing device one, 22- Bag pressing device 2, 23-outlet 1, 24-outlet 2, 25-first rotating shaft, 26-fixed base plate, 27-fixed side plate 1, 28-fixed side plate 2, 29-long guide side plate, 30-short guide side plate, 31-support column, 32-second rotating shaft, d-distance between the main push plate and the fixed side plate at the extreme position, D-width of the small push plate, δ-retraction distance. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments, taking tobacco leaves as an example.

[0028] Example:

[0029] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, a tobacco leaf weighing and baling machine using the structure of this utility model includes a frame 1. The frame 1 includes four support columns 31. A weighing sensor 15 is installed at the bottom of each support column 31. A caster-equipped support leg, which is rotatable or retractable relative to the support column, can be installed on each support column 31. When supported by the casters, the baling machine can be moved. After moving into position, the support leg can be rotatable or retracted. The baling machine is supported by the four weighing sensors 15. The frame 1 is also equipped with a junction box (existing technology) that connects to the weighing sensors 15. (Not shown in the figure) The weighing display 13 is electrically connected. Each weighing sensor 15 and the weighing display 13 have independent power supplies. They are individually connected to a 220V power supply through the plug of the weighing display 13. At this time, the baling machine is similar to a weighbridge and can be regarded as a weighing device. The support column 31 is fixedly connected to the fixed base plate 26. The fixed base plate 26 is generally located on a horizontal plane in the working state. On the fixed base plate 26, there are fixed side plates 27, 29, 28 and 30 perpendicular to the fixed base plate 26. The plates 27 and 28 are arranged in a large cavity. The first fixed side plate 27 is parallel to the second fixed side plate 28. The long guide side plate 29 is parallel to the short guide side plate 30 and perpendicular to the first fixed side plate 27. The length of the long guide side plate 29 is approximately equal to the length of the fixed base plate 26. Its two ends connect to the first fixed side plate 27 and the second fixed side plate 28. The short guide side plate 30 is shorter and located in the middle. Its two ends form two equal-sized openings between the first fixed side plate 27 and the second fixed side plate 28, respectively, for the pressure plate assembly used to compress materials. The components are arranged between the long guide side plate 29 and the short guide side plate 30. The pressure plate assembly includes a main push plate 1 2 and a main push plate 20 arranged perpendicular to the fixed base plate 26. The main push plate 1 2 and the main push plate 20 are connected to each other and can be synchronously translated in a direction perpendicular to the fixed side plate under the action of the compression drive device, thereby forming two parallel rectangular variable volume material boxes in the cavity, namely material box 1 4 and material box 2 16. The fixed base plate 26 is preferably an integral flat plate to reduce the resistance or possible jamming of the main push plate.

[0030] The material bin 4 includes an open-type box body, which is surrounded by a fixed bottom plate 26, a fixed side plate 27, a main push plate 2, and a small push plate 5. The fixed side plate 27 is opposite to the main push plate 2. The small push plate 5 is installed parallel to the long guide side plate 29 on the inner side of the long guide side plate 29 and is driven by an electric push rod 11. The small push plate 5 is opposite to the discharge port 23. The discharge port 23 is a rectangular tube connected to the fixed side plate 27 and the short guide side plate 30. A feed inlet is provided at the top of the box body. The feed inlet is equipped with an openable cover plate 3 that is adapted to the maximum volume of the box body cavity. The cover plate 3 can be locked by a handle lock 6 fixed around the feed inlet to close the feed inlet. Rotating the handle lock 6 can lift the cover plate 3 and open the feed inlet.

[0031] The material bin 2 16 includes an open-type box body, which is surrounded by a fixed bottom plate 26, a fixed side plate 28, a main push plate 20 and a small push plate 2 17. The fixed side plate 28 is opposite to the main push plate 20. The small push plate 2 17 is installed parallel to the long guide side plate 29 on the inner side of the long guide side plate 29 and is driven by an electric push rod 2 18. The small push plate 2 17 is opposite to the discharge port 24. The discharge port 24 is a rectangular tube connected to the fixed side plate 28 and the short guide side plate 30. Another inlet is also provided on the top of the box body. This inlet is equipped with an openable cover plate 2 19 that is adapted to the maximum volume of the box body cavity.

[0032] Both cover plate 1 (3) and cover plate 2 (19) can be locked by the handle lock 6 fixed around the corresponding feed inlet to close the feed inlet. Rotating the handle lock 6 can lift the cover plate and open the feed inlet. The top of the discharge port 1 (23) is provided with a bag pressing device 1 (21), and the top of the discharge port 2 (24) is provided with a bag pressing device 2 (22). These devices are used to fix the bag when the filling bag is put on the discharge port to prepare to receive the tobacco leaves. Specifically, the bag pressing device can be a pressing rod hinged to the top surface of the rectangular tube.

[0033] like Figure 2 , Figure 3 and Figure 4 As shown, the pressure plate assembly includes a first main push plate 2 and a second main push plate 20, a first rotating shaft 25 and a second rotating shaft 32. The first main push plate 2 and the second main push plate 20 are connected to each other and driven by the same motor 10. The first rotating shaft 25 and the second rotating shaft 32 are coaxially arranged with the output shaft of the motor 10. The first main push plate 2 and the second main push plate 20 are connected by two parallel lead screws 8. The motor 10, as a compression drive device, is connected to the first rotating shaft 25 via a coupling 9. The first rotating shaft 25 is connected to one of the lead screws 8 via a worm gear reducer 7. The second rotating shaft 32 is connected via... The first rotating shaft 25 and the second rotating shaft 32 are synchronously connected through the connecting shaft 12 and the couplings 9 at both ends. The connecting shaft 12 is the synchronous shaft of the two screws 8. The structural design of the pressure plate assembly is more labor-saving than the rotation compression assembly of the existing design CN222109226U. The rotation of the screw drives the main push plate to move left and right. After the motor 10, reducer and synchronous shaft are installed, there is no need to change the spatial position during use. It is simpler and more practical, and easier to maintain and use.

[0034] Driven by the motor 10, the main push plate 2 and the main push plate 20 can move left and right on the fixed base plate 26 between the long guide side plate 29 and the short guide side plate 30. The overall strength and rigidity are good, and the movement of the main push plate on the fixed base plate is not easy to wobble. When one side of the material box cover is closed and the tobacco leaves are compressed, the volume of the other side of the material box increases, and the cover can be opened to fill the other side of the material box with materials. The two material boxes work alternately, which greatly improves the packaging efficiency. In this embodiment, due to the characteristics of the tobacco leaves themselves, one end of the discharge port is open and not closed. The air in the tobacco leaves can be discharged through the discharge port during the compression process. During the compression process, the tobacco leaves will not leak much to the discharge port due to being squeezed. The design is to make the main push plate as close as possible to the fixed side plate by a distance d. The width D of the small push plate is smaller than that of the tobacco leaf. That is, according to the characteristics of tobacco leaves, when the distance between the main push plate and the corresponding fixed side plate is d, the tobacco leaf reaches the limit of pressure and forms a tobacco bale. At this time, the volume of the tobacco bale is at its minimum. If the main push plate does not retract slightly, the small push plate will encounter relatively large resistance when pushing the tobacco bale. However, if the main push plate is retracted a certain distance, the tobacco leaf will expand due to the retraction, and the resistance encountered by the small push plate when pushing out is significantly reduced. Therefore, the small push plate can use a low-power drive device, thereby reducing the power required by the entire baling machine and reducing the manufacturing cost. In this embodiment, an electric push rod is selected as the drive device for the small push plate, that is, the bale dispensing drive device. Obviously, other devices can also be used in conjunction with the transmission mechanism to drive the small push plate. Figure 2 In the diagram, the position of the main push plate 12, indicated by the double-dotted line, is the extreme position of the material box 4. The position of the main push plate 12, indicated by the solid line, is the exit position of the material box 4. The same applies to the material box 26.

[0035] For ease of control, the motor 10, electric push rod 11, and electric push rod 2 18 are all electrically connected to the control box 14. The pushing direction of electric push rod 11 and electric push rod 2 18 can be in the same direction or in opposite directions, depending on the arrangement of the discharge ports of the two material boxes. The electrical control box 14 is mounted on the frame 1. The electrical control box 14 is connected to an external control switch via necessary wiring to activate the main push plate. The main push plate is automatically controlled by the electrical control box 14 for both advancement and retraction. Once the main push plate reaches its limit position, the motor 10 reverses direction, and the main push plate automatically begins to retract. After reaching a retraction distance δ, the main push plate stops, and the electric push rod is automatically activated. The small push plate then pushes out the material. At this time, a material bag has been loaded onto the rectangular tube. After one end of the cigarette pack is pushed out of the rectangular tube, it will gradually fall into the material bag under the force of gravity. The material bag automatically extends to accommodate the material. The material bag and the cigarette pack fall automatically together under gravity, achieving bag flipping, which saves one flipping mechanism. After the cigarette pack is completely pushed out, the small push plate automatically retracts and resets. At this time, the main push plate... The pusher plate has completed its reversal. After the other material bin is filled and the cover is closed, the main pusher plate can be restarted via the control button to compress and pack the other material bin, making the operation more convenient. The dimensions of the material bin, main pusher plate, and small pusher plate can be reasonably determined according to the packing size requirements and the different states and volumes of the material during quantitative packing. The amount of the retraction distance δ can be adjusted within a certain small range according to different materials to achieve the most suitable degree and ensure that the compression degree of the quantitative material is consistent. The automatic control of the retraction distance is relatively simple. It can be achieved by using a delay device with a motor control circuit based on the screw speed of the lead screw. The above automatic control can also be achieved with conventional PLC technology after understanding its control logic and process. Therefore, only the action process has been introduced. The packing method will be explained in detail below.

[0036] refer to Figures 1-3As described above regarding the usage method of this utility model baling machine, the baling method of the tobacco weighing baling machine is as follows: The entire baling machine is in its initial state, with one side hopper 4 at its maximum volume. The small push plates of both hoppers are at their furthest points from the discharge port. The weighing display 13 is zeroed, and the baling machine's own weight does not affect the weighing display for easy observation. Tobacco leaves are filled into hopper 4 until the weighing display 13 shows the set weight, indicating that the set weight of tobacco leaves has been filled. At this point, the cover plate 3 is closed. Then, the control switch of the pressure plate assembly is pressed, starting the motor 10. The main push plate 2 moves closer to the corresponding fixed side plate 27, gradually compressing the tobacco leaves. When the limit position is reached, under the control of the electrical control box 14, the main push plate 2 stops moving, the motor 10 reverses direction, and the main push plate 2... 2. Retraction begins. When the retraction distance reaches δ, motor 10 stops, electric push rod 11 extends, and small push plate 5 pushes tobacco leaves out of the discharge port. During the process from closing the cover to the small push plate's movement, the filling bag is placed on the discharge port 23. The filling bag receives the tobacco leaves pushed out of the discharge port 23. After reaching its limit position, small push plate 5 automatically retracts to its initial position to wait for the next action. After the material box 4 is closed, cover plate 2 19 can be opened to fill material box 2 16 with tobacco leaves. When the weighing display 13 shows a weight of twice the set weight, the set weight of tobacco leaves has been filled into material box 2 16. Cover plate 2 19 can be closed. After the material discharge from material box 4 is completed, press the control switch of the pressure plate assembly again to start the compression process of material box 2 16. This process is repeated.

[0037] It is evident that using this tobacco weighing and baling machine can significantly improve baling efficiency. Furthermore, the weighing process is completed simultaneously with the loading process, eliminating the need for a separate weighing device to transfer materials to the baling device. The entire process requires only a single button switch—the control switch for the pressure plate assembly—making operation simple. In addition, the electrical control box 14 should generally be equipped with a separate main power switch.

[0038] Clearly, the baling machine of this invention can be used not only for baling tobacco leaves, but also for baling other materials with similar properties, such as economically valuable herbs and fallen leaves, to facilitate centralized utilization. This invention also has value for forestry resource development.

Claims

1. A baling machine, comprising a frame (1), wherein a cuboid-shaped variable-volume hopper is disposed on the frame (1), characterized in that: Two material boxes are arranged side by side on the frame (1). Each material box includes an open box body located on the fixed base plate (26) and having a discharge port on one side, which is surrounded by a fixed base plate (26), a fixed side plate, a main push plate and a small push plate. The fixed side plate is opposite to the main push plate, and the small push plate is opposite to the discharge port. The top of the box body is provided with a feed port, which is equipped with an openable cover plate adapted to the maximum volume of the box body cavity. The main push plates of the two material boxes are connected to each other and can be driven by a compression drive device to move synchronously on the fixed base plate. The small push plates of the two material boxes are driven by independent packing drive devices.

2. The packaging machine as described in claim 1, characterized in that: The compression drive device is connected to the first rotating shaft (25) for transmission. The first rotating shaft (25) is connected to the lead screw (8) through the worm gear reducer (7). The lead screw (8) is connected between the two main push plates.

3. The packaging machine as described in claim 1, characterized in that: The compression drive device is connected to the first rotating shaft (25) for transmission. The first rotating shaft (25) is synchronously connected to the second rotating shaft (32) through the connecting shaft (12). Two lead screws (8) are fixed side by side between the two main push plates. The first rotating shaft (25) and the second rotating shaft (32) are respectively connected to one of the lead screws (8) through the same worm gear reducer (7).

4. The packaging machine as described in claim 1, 2, or 3, characterized in that: The closest distance that the main push plate can reach to the fixed side plate is less than the width of the small push plate.

5. The packaging machine as described in claim 1, 2, or 3, characterized in that: The frame (1) is supported by a weighing sensor (15), which is electrically connected to a weighing display (13). The compression drive and the bag-out drive are electrically connected to the electrical control box (14), and the electrical control box (14) and the weighing display (13) are both mounted on the frame (1).

6. The packaging machine as described in claim 1, 2, or 3, characterized in that: The discharge port is configured as a rectangular tube connected to the box body, and a bag pressing device is provided at the top of the rectangular tube.

Images