Automatic feeding and bag removal device and method for boxed tobacco stems

Abstract

The present invention discloses an automatic feeding and bag removal device and method for boxed tobacco stems, comprising a conveying platform, a turning mechanism, a box restraining mechanism, and a bag removal mechanism; the conveying platform is used to horizontally feed an unpacked tobacco stem box with a folded box lid into a limiting bin of the turning mechanism; the turning mechanism comprises a turntable and a limiting bin, the limiting bin being a notched structure on the outer periphery of the turntable, with either one or both lateral ends of the limiting bin corresponding to the conveying platform being vacant; the box restraining mechanism is entirely located above the turntable and comprises a lifting drive mechanism and a lid closing mechanism, the lid closing mechanism comprising a rectangular cover body that fits into the limiting bin, the center of the rectangular cover body being a rectangular square hole, the area of ​​the rectangular square hole being smaller than the opening area of ​​the tobacco stem box, and the lid closing mechanism being detachably connected to the turntable and the lifting drive mechanism. The present invention can realize automatic feeding and automatic bag removal, requiring only manual labor to remove the box restraining straps and fold the box lid during the unpacking process, thereby significantly reducing manual workload.

Description

Technical Field

[0001] The present invention relates to the technical field of tobacco material feeding production lines, and more particularly to an automatic feeding and bagging device and method for boxed tobacco stems. Background Art

[0002] The comprehensive automation technology of tobacco silk production lines continues to develop, and has now achieved the replacement of most manpower. Workers only participate in a small part of lightweight work, which greatly reduces labor intensity.

[0003] Currently, tobacco stems are commonly delivered in bags and boxes. Boxed tobacco stems are transported using an electric gripper forklift in conjunction with manual handling. The electric gripper forklift removes the boxed tobacco stems from the delivery platform and delivers them to the pit-type tobacco stem feeding port, assisting in turning the tobacco stem box. Manual handling then completes the tobacco stem delivery by unpacking the box, selecting the tobacco stems, and feeding them.

[0004] Cigarette factories typically deliver 5-6 tons of tobacco stems daily. Each individual tobacco stem box is packaged in 200kg packaging conforming to the YC / T137.1 standard (1136mm × 720mm × 725mm). The weight of the stems inside is approximately 180kg, making manual handling impossible. Personnel are required to coordinate tasks such as unpacking, sorting, and feeding, creating a highly labor-intensive and potentially hazardous task. Furthermore, the compaction level of each box of tobacco stems varies. If the clamping force of an electric forklift on a box is insufficient, the box and the clamping arm will slide relative to each other. Excessive clamping force can cause the box to deform, potentially damaging the box and causing the stems to scatter, resulting in a poor feeding environment. Some factories also use robotic arms to automatically unpack the stems, requiring extensive equipment modifications and significant costs.

[0005] Since there are many broken pieces of tobacco stems, there is an inner bag inside the boxed tobacco stem box. Between the bottom of the inner bag and the bottom of the tobacco stem box is a piece of cardboard to prevent the bottom of the box from deforming. When feeding, the opening of the tobacco stem box needs to face downward. At the same time, it is also necessary to prevent the inner bag and cardboard from being discharged into the pit-type feeding port with the tobacco stems. Therefore, it is necessary to add mechanized transformation means for flipping, dumping and removing bags for the tobacco stem box on the basis of this equipment. Manual labor can participate in some of the lightweight work and play a supervisory role to ensure smooth and safe work. Summary of the Invention

[0006] The object of the present invention is to address the deficiencies of the prior art and thereby provide a device and method for automatically feeding and bagging boxed tobacco stems, which can realize automatic feeding and bagging of tobacco stems.

[0007] According to one aspect of the present invention, there is provided an automatic feeding and bag removal device for boxed tobacco stems, comprising a conveying platform, a turning mechanism, a box restraining mechanism and a bag removal mechanism;

[0008] The conveying platform is used to horizontally convey the tobacco stem box with the box cover folded and opened into the limit bin of the turnover mechanism;

[0009] The turning mechanism includes a turntable and a limit bin, wherein the limit bin is a notch structure on the outer periphery of the turntable, and the two lateral ends or one end of the limit bin corresponding to the conveying platform are left vacant so as to dock with the outlet of the conveying platform;

[0010] The box restraining mechanism is entirely located above the turntable and includes a lifting drive mechanism and a lid closing mechanism. The lid closing mechanism includes a rectangular cover body that fits with the limit bin, the center of the rectangular cover body is a rectangular square hole, the area of ​​the rectangular square hole is smaller than the opening area of ​​the tobacco stem box, and the lid closing mechanism is detachably connected to the turntable and the lifting drive mechanism.

[0011] The bag removal mechanism includes a group of horizontal moving mechanisms installed on opposite sides of the rectangular cover body. A pair of rubber rollers are installed at the front end of the moving end of the horizontal moving mechanism. The limit displacement position of the rubber rollers in the horizontal direction is located within the rectangular square hole, and a narrow gap is set between the rubber rollers. The rubber rollers are driven by a motor to rotate relative to each other so that the inner bags in the tobacco stem box are rolled into the rubber rollers.

[0012] Optionally, according to the automatic feeding and bag removal device for boxed tobacco stems of the present invention, a row of rollers is provided at the bottom end of the limiting bin, and the rotation direction of the rollers is consistent with the conveying direction of the conveying platform to reduce the resistance of the tobacco stem box entering the limiting bin.

[0013] Optionally, according to the automatic feeding and bag removal device for boxed tobacco stems of the present invention, the limiting bin is empty at the inlet end facing the conveying platform and closed at the outlet end facing away from the conveying platform, and an electric movable door is provided at the inlet end of the limiting bin.

[0014] Optionally, according to the automatic feeding and bag removal device for boxed tobacco stems of the present invention, the lifting drive mechanism and the turntable are installed on the same set of frames, and the lifting drive mechanism is a screw transmission mechanism or a cylinder or a hydraulic cylinder.

[0015] Optionally, according to the automatic feeding and bag removal device for boxed tobacco stems of the present invention, the lifting drive mechanism and the lid closing mechanism are detachably connected via a jaw structure, a mechanical claw structure, an electrically controlled snap-on structure, or an electromagnet structure.

[0016] Optionally, according to the automatic feeding and bag removal device for boxed tobacco stems of the present invention, the turntable is provided with a detachable connection of a jaw structure or a mechanical claw structure or an electric-controlled snap or an electromagnet structure for the rectangular cover body of the closing mechanism.

[0017] Optionally, according to the automatic feeding and bag removal device for boxed tobacco stems of the present invention, both ends of the rectangular cover body extend outward to form arc surfaces that match the contour surface of the turntable, and the area of ​​the arc surface serves as the area connected to the turntable and the lifting drive mechanism.

[0018] Optionally, according to the automatic feeding and bagging device for boxed tobacco stems of the present invention, a pressure sensor for detecting the pressure between the rubber rollers is provided at the rubber rollers, and the pressure sensor cooperates with the drive motor of the rubber rollers to control the drive motor to stop rotating and self-lock according to whether the pressure reaches a set pressure value.

[0019] Optionally, according to the automatic feeding and bag removal device for boxed tobacco stems of the present invention, the surface of the rubber roller is coated with glue to adhere the inner bags in the tobacco stem box.

[0020] According to a second aspect of the present invention, there is also provided a method for automatically feeding and bagging boxed tobacco stems, using the automatic feeding and bagging device for boxed tobacco stems as described in any one of the above embodiments, and the following steps:

[0021] S1. Unpacking: The tobacco stem boxes are transported from the warehouse to the conveying platform by an electric clamping forklift, and the process of unpacking and folding the box cover is carried out;

[0022] S2, conveying: The conveying platform pushes the unpacked tobacco stem boxes into the limited bin of the turntable;

[0023] S3, fixing: the cover closing mechanism fixes the tobacco stem box on the limit bin;

[0024] S4, unloading: the turntable rotates and the opening of the tobacco stem box is set downward;

[0025] S5. Bag removal: After unloading, the turntable and lid closing mechanism are reset, and the tobacco stem box and inner bag are taken out.

[0026] Optionally, according to the method for automatic feeding and bagging of boxed tobacco stems of the present invention, in S3, the specific method is fixed as follows:

[0027] The box restraint mechanism covers the rectangular cover in the closing mechanism at the limit bin through the lifting drive mechanism, and the lifting drive mechanism and the closing mechanism are disconnected, and the rectangular cover in the closing mechanism is connected to the limit bin.

[0028] Optionally, according to the method for automatic feeding and bagging of boxed tobacco stems of the present invention, in S4, the specific method of unloading is:

[0029] S41. Under the action of gravity, the material in the inner bag of the tobacco stem box continues to pour out;

[0030] S42, the horizontal moving mechanism drives the rubber roller to move toward the middle and to the inner side of the rectangular hole, and contacts the inner bag in the tobacco stem box;

[0031] S43, the driving motor drives the rubber roller to rotate relatively to roll the inner bag into the rubber roller.

[0032] Optionally, according to the method for automatically feeding and bagging boxed tobacco stems of the present invention, in S5, the specific method of bagging is as follows:

[0033] S51, after the material is poured out, the turntable rotates 180 degrees again to achieve the reset of the turntable;

[0034] S52, the driving motor drives the rubber roller to rotate in the reverse direction, and the inner bag is separated from the rubber roller;

[0035] S53, the horizontal moving mechanism drives the rubber roller to return to its original position;

[0036] S54: The rectangular cover body in the cover closing mechanism is disconnected from the limit bin and connected to the lifting drive mechanism for reset;

[0037] S55. The operator takes out the tobacco stem box and inner bag from the limited bin.

[0038] The present invention has outstanding substantial features and significant progress compared to the prior art. Specifically, the present invention has the following advantages:

[0039] 1. In terms of process, the device only requires workers to design an unpacking station on the conveying platform to open the restraining straps and tapes on the tobacco stem box and fold the box cover to the outer wall. Other processes such as turning over, fixing, feeding and bag removal of the tobacco stem box are all automated, which greatly reduces labor intensity. If a robot arm for automatic lid opening is added, the labor input will be further reduced and efficiency will be improved.

[0040] 2. The design of bag removal is one of the important contributions of this application. First, a closing mechanism is designed, in which the rectangular square hole formed is smaller than the opening of the tobacco stem box. After the tobacco stem box is opened downward, the bag body inside will not be discharged with the tobacco stems due to the relatively smaller opening design; then, a pair of rubber rollers move synchronously or in advance to the inner side of the rectangular square hole. As the tobacco stems flow outward under the action of gravity, the flexible bag body is pushed outward, so that the surface of the bag body contacts the surface of the rubber rollers. Then, the pair of rubber rollers are controlled to rotate and a part of the bag body is rolled into the narrow gap, which plays the role of a manipulator, while avoiding damage to the bag body. It also plays the role of a support to assist the internal tobacco stems to flow out quickly. When the tobacco stems are discharged, the bag body will be intercepted by the clamping action of the rubber rollers, and the cardboard between the bag body and the box body is also intercepted by the bag body, thereby completing the bag removal operation during the feeding process, preventing the bag body from entering the subsequent production line with the tobacco stems. The staff only needs to take away the bag body, cardboard and tobacco stem box after the turntable flips back.

[0041] 3. The turning mechanism adopts the form of a turntable, and the side of the turntable is used as the entry direction, so that the turning action of the tobacco stem box does not require the clamping mechanism to apply force, thereby avoiding the tobacco stem box from being compressed and deformed, especially during the feeding process. Once deformed, the tobacco stem box will lose its restraint and become uncontrolled, resulting in feeding failure.

[0042] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0044] Figure 1 This is a schematic diagram of the first state of an automatic feeding and bag removal device for boxed tobacco stems in the present invention.

[0045] Figure 2 This is a schematic diagram of the second state of the automatic feeding and bag removal device for boxed tobacco stems of the present invention.

[0046] Figure 3 This is a schematic diagram of the third state of an automatic feeding and bagging device for boxed tobacco stems of the present invention.

[0047] Figure 4 This is a schematic diagram of the fourth state of an automatic feeding and bagging device for boxed tobacco stems of the present invention.

[0048] Figure 5 The present invention is a schematic diagram of the bag removal principle of an automatic feeding and bag removal device for boxed tobacco stems.

[0049] Figure 6 It is a partial enlarged view of the bag removal mechanism.

[0050] Explanation of the accompanying symbols: 1. Conveying platform; 2. Turning mechanism; 3. Box restraint mechanism; 4. Bag removal mechanism; 5. Tobacco stem box; 6. Inner bag; 7. Cardboard; 21. Limiting bin; 22. Turntable; 31. Lifting drive mechanism; 32. Cover closing mechanism; 33. Rectangular square hole; 34. Arc surface; 41. Horizontal moving mechanism; 42. Rubber roller. DETAILED DESCRIPTION

[0051] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0052] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0053] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0054] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0055] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0056] according to Figures 1 to 6 As shown, the present invention provides an automatic feeding and bag removal device for boxed tobacco stems, comprising a conveying platform 1, a turning mechanism 2, a box restraining mechanism 3 and a bag removal mechanism 4.

[0057] The conveying platform 1 is used to horizontally convey the tobacco stem box 5 with the box cover folded and opened into the limiting bin 21 of the turning mechanism 2.

[0058] The main work of the unpacking process is to cut off the binding belt on the outside of the tobacco stem box 5 and open the sealing strip on the tobacco stem box 5. This process can be completed manually or with the help of a special unpacking robot.

[0059] The process of folding the box cover can be completed manually, and the box cover is folded close to the outer wall of the tobacco stem box 5 to avoid collision and interference between the box cover and the turntable 22 after the tobacco stem box 5 enters the limit bin 21, or to block the opening of the tobacco stem box 5. Since the tobacco stem box 5 has a large weight, under normal circumstances, after the box cover is fully opened, the box cover is basically attached to the outer wall of the tobacco stem box 5 under the action of its own gravity.

[0060] The turning mechanism 2 includes a turntable 22 and a limiting bin 21 . The limiting bin 21 is a notch structure on the outer periphery of the turntable 22 . The two lateral ends or one end of the limiting bin 21 corresponding to the conveying platform 1 are left vacant so as to dock with the outlet of the conveying platform 1 .

[0061] The box restraint mechanism 3 is located above the turntable 22 as a whole, and includes a lifting drive mechanism 31 and a lid closing mechanism 32. The lid closing mechanism 32 includes a rectangular cover body that fits with the limiting bin 21. The center of the rectangular cover body is a rectangular square hole 33. The area of ​​the rectangular square hole 33 is smaller than the opening area of ​​the tobacco stem box 5. The lid closing mechanism 32 is connected to the turntable 22 and the lifting drive mechanism 31 in a detachable manner.

[0062] The bag removal mechanism 4 includes a group of horizontal moving mechanisms 41 installed on opposite sides of the rectangular cover body. A pair of rubber rollers 42 are installed at the front end of the moving end of the horizontal moving mechanism 41. The limit displacement position of the rubber rollers 42 in the horizontal direction is located within the rectangular square hole 33, and a narrow gap is set between the rubber rollers 42. The rubber rollers 42 are driven by a motor to rotate relative to each other so that the inner bag 6 in the tobacco stem box 5 is rolled into the rubber rollers 42.

[0063] Furthermore, a row of rollers is provided at the bottom end of the limiting bin 21 , and the rotation direction of the rollers is consistent with the conveying direction of the conveying platform 1 , so as to overcome the problem of heavy weight of the tobacco stem box 5 and large entry resistance.

[0064] Generally, under the thrust of the conveying platform 1, the tobacco stem box 5 can enter the limiting bin 21. If necessary, in a preferred embodiment, a pushing robot can be added at the entrance to the limiting bin 21 to push the tobacco stem box 5 into the limiting bin 21, or the roller in the limiting bin 21 can be designed as an active roller to help the tobacco stem box 5 move into place.

[0065] Whether the tobacco stem box 5 is in place can be detected by a position sensor. Since this technology is too conventional, it will not be described in detail.

[0066] Furthermore, the inlet end of the limiting bin 21 facing the conveying platform 1 is empty and the outlet end facing away from the conveying platform 1 is closed, and an electric movable door is provided at the inlet end of the limiting bin 21 to prevent the tobacco stem box 5 from leaving the limiting bin 21.

[0067] Furthermore, the lifting drive mechanism 31 and the turntable 22 are installed on the same set of frames, and the lifting drive mechanism 31 is a screw transmission mechanism or a cylinder or a hydraulic cylinder.

[0068] Furthermore, the lifting drive mechanism 31 and the cover closing mechanism 32 are detachably connected via a jaw structure, a mechanical claw structure, an electric-controlled snap-fit ​​structure, or an electromagnet structure.

[0069] Specifically, the separable forms are quite diverse, and can be conventional structural forms such as a jaw structure, a mechanical claw structure, an electric-controlled snap structure, or an electromagnet structure.

[0070] When a jaw structure is adopted, a corresponding clamp is provided on the closing mechanism 32, and a powered jaw is provided at the matching position of the end of the lifting drive mechanism 31 and the turntable 22, and the connection is achieved by locking the jaw and the clamp; when a mechanical claw structure is adopted, a corresponding lock head that cooperates with the mechanical claw is provided on the closing mechanism 32, and corresponding mechanical claws are provided on the lifting drive mechanism 31 and the turntable 22, and the connection is achieved by locking the mechanical claw and the lock head; when an electrically controlled snap-fit ​​structure is adopted, the electrically controlled power part is designed on the turntable 22 and the lifting drive structure, and the locked structure is designed on the closing mechanism 32; the above-mentioned several forms of mechanical locking are generally designed at the edge of the turntable 22, and the edge of the turntable 22 and the edge of the closing mechanism 32 are used to provide installation and interlocking space for the above-mentioned mechanisms.

[0071] Furthermore, the turntable 22 is provided with a detachable connection with the rectangular cover of the lid closing mechanism 32, which is provided with a jaw structure, a mechanical claw structure, an electric control buckle, or an electromagnet structure. The connection method between the lifting drive mechanism 31 and the lid closing mechanism 32 is the same as that between the lifting drive mechanism 31 and the lid closing mechanism 32, and will not be repeated here.

[0072] Furthermore, both ends of the rectangular cover extend outward to form arc surfaces 34 that match the contour surface of the turntable 22 , and the area of ​​the arc surface 34 serves as the area connected to the turntable 22 and the lifting drive mechanism 31 .

[0073] In this embodiment, an electromagnet structure is adopted, and electromagnets that cooperate with each other are set between the lifting drive mechanism 31 and the lid closing mechanism 32, and between the lid closing mechanism 32 and the turntable 22. In order to enhance the adsorption force, in this embodiment, both ends of the rectangular cover body are extended outward to form an arc surface 34 that cooperates with the contour surface of the turntable 22. The area of ​​the arc surface 34 serves as the electromagnet adsorption area connected to the turntable 22 and the lifting drive mechanism 31, providing a larger contact area.

[0074] Furthermore, in order to achieve precise control, a pressure sensor for detecting the pressure between the rubber rollers 42 is provided at the rubber rollers 42. The pressure sensor cooperates with the drive motor of the rubber rollers 42 to control the drive motor to stop rotating and self-lock according to whether the pressure reaches the set pressure value.

[0075] Furthermore, the surface of the rubber roller 42 is coated with glue to adhere the inner bag 6 in the tobacco stem box 5. The adhesive strength between the rubber roller 42 and the inner bag 6 is improved to ensure that the inner bag 6 does not fall from the tobacco stem box 5 during the unloading process.

[0076] In addition, based on the automatic feeding and bagging device for boxed tobacco stems described in the above embodiments, the present invention also provides a method for automatic feeding and bagging of boxed tobacco stems, using any of the automatic feeding and bagging devices for boxed tobacco stems described in the above embodiments, and the following steps:

[0077] S1. Unpacking: Tobacco stem boxes 5 are transported from the warehouse to the conveying platform 1 by an electric gripper forklift, where they are unpacked and the lids folded. After this process is completed, the bags inside are exposed, with the bag openings still folded and stacked at the box opening. The tobacco stem boxes 5 are then pushed into the restricted bins 21 of the turntable 22.

[0078] S2 , transporting: the transport platform 1 pushes the unpacked tobacco stem box 5 into the limiting bin 21 of the turntable 22 .

[0079] S3. Fixing: The cover closing mechanism 32 fixes the tobacco stem box 5 on the limiting bin 21 .

[0080] S4. Unloading: The turntable 22 rotates to set the opening of the tobacco stem box 5 downward.

[0081] S5. Bag removal: After unloading is completed, the turntable 22 and the lid closing mechanism 32 are reset, and the tobacco stem box 5 and the inner bag 6 are taken out.

[0082] Furthermore, in S3, the specific method of fixing is:

[0083] The box restraint mechanism 3 uses the lifting drive mechanism 31 to cover the rectangular cover in the lid closing mechanism 32 on the limiting bin 21. The lifting drive mechanism 31 and the lid closing mechanism 32 are disconnected, and the rectangular cover in the lid closing mechanism 32 is connected to the limiting bin 21. Generally, the connection is made first and then the original connection is disconnected to ensure safety.

[0084] Furthermore, in S4, the specific method of unloading is:

[0085] S41. Under the action of gravity, the material in the inner bag 6 of the tobacco stem box 5 continues to pour outward.

[0086] Under the action of gravity, the tobacco stems pour outward, and the folded inner bag 6 is opened, and the inner bag 6 expands outward. At this time, since the area of ​​the rectangular square hole 33 in the closing mechanism 32 is smaller than the opening area of ​​the tobacco stem box 5, the inner bag 6 will not slip directly out of the tobacco stem box 5 when it is full, but will fall only after a sufficient amount of tobacco stems are poured out.

[0087] S42 , the horizontal moving mechanism 41 drives the rubber roller 42 to move toward the center, and moves to the inner side of the rectangular square hole 33 , and contacts the inner bag 6 in the tobacco stem box 5 .

[0088] S43 , the driving motor drives the rubber roller 42 to rotate relatively, so as to roll the inner bag 6 into the rubber roller 42 .

[0089] When pouring begins or before preparing to pour or before turning 180°, the horizontal moving mechanism 41 is controlled to drive the rubber roller 42 to move closer to the middle and move to the inside of the rectangular square hole 33. Due to the pressure of the tobacco stems expanding outward when pouring and the action of the rubber roller 42 gathering to reduce the opening, the rubber roller 42 is in full contact with the outer wall of the inner bag 6. Under the action of the glue, part of the inner bag 6 is rolled into the gap of the rubber roller 42. Under the monitoring of the pressure sensor or the set working time, the part of the inner bag 6 is firmly stuck in the gap of the rubber roller 42, and then the motor self-locks to achieve the effect of locking the inner bag 6.

[0090] After locking is completed, the horizontal moving mechanism 41 can be controlled to move outward to open the opening, or remain unchanged. After the tobacco stems are poured out, the inner bag 6 is not put into the subsequent discharge conveyor belt due to the constraint of the rubber roller 42, and the cardboard 7 is also left inside the box due to the constraint of the inner bag 6 and the box.

[0091] Furthermore, in S5, the specific method of removing the bag is:

[0092] S51, after the material pouring is completed, the turntable 22 rotates 180 degrees again to achieve the reset of the turntable 22.

[0093] S52 , the driving motor drives the rubber roller 42 to rotate in the reverse direction, and the inner bag 6 is separated from the rubber roller 42 .

[0094] S53: The horizontal moving mechanism 41 drives the rubber roller 42 to return to its original position.

[0095] S54: The rectangular cover in the cover closing mechanism 32 is disconnected from the limiting bin 21 and connected to the lifting drive mechanism 31 for reset.

[0096] S55 , the operator takes out the tobacco stem box 5 , the inner bag 6 and the cardboard 7 from the limiting bin 21 .

[0097] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. An automatic feeding and bagging device for boxed tobacco stems, characterized in that: It includes a conveying platform, a turning mechanism, a box restraining mechanism and a bag removing mechanism; The conveying platform is used to horizontally convey the tobacco stem box with the box cover folded and opened into the limit bin of the turnover mechanism; The turning mechanism includes a turntable and a limit bin, wherein the limit bin is a notch structure on the outer periphery of the turntable, and the two lateral ends or one end of the limit bin corresponding to the conveying platform are left vacant so as to dock with the outlet of the conveying platform; The box restraining mechanism is entirely located above the turntable and includes a lifting drive mechanism and a lid closing mechanism. The lid closing mechanism includes a rectangular cover body that fits with the limit bin, the center of the rectangular cover body is a rectangular square hole, the area of ​​the rectangular square hole is smaller than the opening area of ​​the tobacco stem box, and the lid closing mechanism is detachably connected to the turntable and the lifting drive mechanism. The bag removal mechanism includes a group of horizontal moving mechanisms installed on opposite sides of the rectangular cover body. A pair of rubber rollers are installed at the front end of the moving end of the horizontal moving mechanism. The limit displacement position of the rubber rollers in the horizontal direction is located within the rectangular square hole, and a narrow gap is set between the rubber rollers. The rubber rollers are driven by a motor to rotate relative to each other so that the inner bags in the tobacco stem box are rolled into the rubber rollers.

2. The automatic feeding and bagging device for boxed tobacco stems according to claim 1, characterized in that: A row of rollers is provided at the bottom end of the limiting bin, and the rotation direction of the rollers is consistent with the conveying direction of the conveying platform to reduce the resistance of the tobacco stem box entering the limiting bin.

3. The automatic feeding and bag removal device for boxed tobacco stems according to claim 2, characterized in that: The inlet end of the position-limiting bin facing the conveying platform is empty, and the outlet end facing away from the conveying platform is closed, and an electric movable door is provided at the inlet end of the position-limiting bin.

4. The automatic feeding and bagging device for boxed tobacco stems according to any one of claims 1 to 3, characterized in that: The lifting drive mechanism and the turntable are installed on the same set of frames, and the lifting drive mechanism is a screw transmission mechanism or a cylinder or a hydraulic cylinder.

5. The automatic feeding and bag removal device for boxed tobacco stems according to claim 4, characterized in that: The lifting drive mechanism and the cover closing mechanism are detachably connected via a jaw structure, a mechanical claw structure, an electric-controlled snap-fit ​​structure, or an electromagnet structure.

6. The automatic feeding and bagging device for boxed tobacco stems according to any one of claims 1 to 3, characterized in that: The turntable is provided with a detachable connection for the rectangular cover body of the cover closing mechanism with a jaw structure, a mechanical claw structure, an electric control buckle or an electromagnet structure.

7. The automatic feeding and bagging device for boxed tobacco stems according to claim 6, characterized in that: Both ends of the rectangular cover extend outward to form arc surfaces that match the contour surface of the turntable, and the area of ​​the arc surface serves as the area connected to the turntable and the lifting drive mechanism.

8. The automatic feeding and bagging device for boxed tobacco stems according to claim 7, characterized in that: The rubber rollers are provided with pressure sensors for detecting the pressure between the rubber rollers. The pressure sensors cooperate with the driving motors of the rubber rollers to control the driving motors to stop rotating and self-lock according to whether the pressure reaches a set pressure value.

9. The automatic feeding and bagging device for boxed tobacco stems according to claim 8, characterized in that: The surface of the rubber roller is coated with glue to adhere the inner bag in the tobacco stem box.

10. A method for automatically feeding and removing tobacco stems from boxes, characterized in that: The automatic feeding and bagging device for boxed tobacco stems according to any one of claims 1 to 9 is used, and the following steps are performed: S1. Unpacking: The tobacco stem boxes are transported from the warehouse to the conveying platform by an electric clamping forklift, and the process of unpacking and folding the box cover is carried out; S2, conveying: The conveying platform pushes the unpacked tobacco stem boxes into the limited bin of the turntable; S3, fixing: the cover closing mechanism fixes the tobacco stem box on the limit bin; S4, unloading: the turntable rotates and the opening of the tobacco stem box is set downward; S5. Bag removal: After unloading, the turntable and lid closing mechanism are reset, and the tobacco stem box and inner bag are taken out.

11. The method for automatically feeding and removing tobacco stems from boxes according to claim 10, characterized in that: In S3, the specific method of fixing is: The box restraint mechanism covers the rectangular cover in the closing mechanism at the limit bin through the lifting drive mechanism, and the lifting drive mechanism and the closing mechanism are disconnected, and the rectangular cover in the closing mechanism is connected to the limit bin.

12. The method for automatically feeding and removing tobacco stems from boxes according to claim 10, characterized in that: In said S4, the specific method of unloading is: S41. Under the action of gravity, the material in the inner bag of the tobacco stem box continues to pour out; S42, the horizontal moving mechanism drives the rubber roller to move toward the middle and to the inner side of the rectangular hole, and contacts the inner bag in the tobacco stem box; S43, the driving motor drives the rubber roller to rotate relatively to roll the inner bag into the rubber roller.

13. The method for automatically feeding and removing tobacco stems from boxes according to claim 10, characterized in that: In said S5, the specific method of removing the bag is: S51, after the material is poured out, the turntable rotates 180 degrees again to achieve the reset of the turntable; S52, the driving motor drives the rubber roller to rotate in the reverse direction, and the inner bag is separated from the rubber roller; S53, the horizontal moving mechanism drives the rubber roller to return to its original position; S54: The rectangular cover body in the cover closing mechanism is disconnected from the limit bin and connected to the lifting drive mechanism for reset; S55. The operator takes out the tobacco stem box and inner bag from the limited bin.

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