Bale cutter

Abstract

The bag cutting machine comprises a bag cutting machine shell, cutting tools and a driving structure, the bag cutting machine shell is formed by connecting an even number of branch shells arranged at equal intervals around a center, the upper end of each branch shell is provided with a cutting seam, each cutting tool is arranged in each cutting seam in a sliding mode, and the driving structure drives the cutting tools to rotate. Driving structures used for driving the cutting tools to reciprocate along the cutting seams are arranged in the branch shells, the upper end faces, located on the two sides of the cutting seams, of the branch shells are reverse inclined faces arranged downwards from the cutting seams to the outside, the side walls of the branch shells are vertical faces, and the bottoms of the branch shells are open. According to the utility model, the planeness of the shell of the bale cutter can be ensured, and the falling material can slide down freely through the reverse inclined surface, so that the problem of material accumulation after cutting is avoided; due to the structural arrangement of the branch shell, the fallen materials penetrating through the cutting seam can directly fall off from the opening in the bottom; the structure of the bale cutter shell is matched with the cutting seam and the cutting tool, outward cutting from the center point can be achieved, and the cutting efficiency is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to bag cutting device technical field, specifically relates to a bag cutting machine. BACKGROUND

[0002] When granular material is loaded, generally, ton bag of packing granular material is first suspended above the cabin, then manually moved to the ton bag below along the bridge, and then the ton bag bottom is cut manually, so that the material in the ton bag flows out and falls into the cabin. At present, some automatic bag cutting devices are used to replace manual bag cutting operation, realizing automatic, intelligent and safe bag cutting operation.

[0003] At present, the common bag cutting device using a movable cutter will cause the granular material in the ton bag to fall and gradually accumulate on the bag cutting device when driving the cutter to cut the ton bag bottom. In the frequent working state, the driving structure is easily blocked or damaged, which seriously affects the working efficiency and increases the maintenance cost.

[0004] Therefore, there is an urgent need for a bag cutting machine to solve the problem that the granular material in the ton bag will accumulate on the bag cutting device, thereby affecting the driving structure. INVENTION CONTENTS

[0005] The utility model discloses a bag cutting machine to solve the problem that the granular material in the ton bag will accumulate on the bag cutting device, thereby affecting the driving structure.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] A bag cutting machine, characterized in that: it comprises a bag cutting machine shell, a cutting cutter and a driving structure, the bag cutting machine shell is composed of a plurality of equidistantly arranged support shells connected around a center, the upper end of each support shell is provided with a cutting slot extending from the center of the bag cutting machine shell to the end away from the center, a cutting cutter is slidably arranged in each cutting slot, the inside of the support shell is provided with a driving structure for driving the cutting cutter to reciprocate along the cutting slot, the upper end surface of the support shell on both sides of the cutting slot is outwardly provided with an inverted slope from the cutting slot, the side wall of the support shell is a vertical surface, and the bottom of the support shell is open.

[0008] To optimize the above-mentioned technical scheme, the specific measures taken also include:

[0009] Furthermore, the drive structure includes a drive motor, a drive sprocket, a chain, a driven sprocket, a mounting base, a slide rail, and a transmission structure. The drive shaft of the drive motor is vertically positioned at the center inside the bag-cutting machine housing. Several drive sprockets are provided on the drive shaft corresponding to the number of support housings. A driven sprocket is rotatably mounted on the end of each support housing away from the center of the bag-cutting machine housing via a mounting base. A chain is sleeved between the drive sprocket and the corresponding driven sprocket. A slide rail is also provided inside the support housing along the direction of the cutting seam. The cutting tool is slidably mounted on the slide rail via the transmission structure and connected to the chain. The drive motor is used to drive the several drive sprockets to synchronously drive the transmission structure on the corresponding chain to carry the cutting tool along the slide rail in the cutting seam.

[0010] Furthermore, the transmission structure includes a fixing member, a slide block, a connecting plate, and an outer link of the chain. The slide rail is disposed above the chain, and the slide block is slidably disposed on the slide rail. The cutting tool is mounted on the upper end of the slide block through the fixing member, and the connecting plate is mounted on the lower end of the slide block. The connecting plate is fixedly connected to the chain through the outer link of the chain.

[0011] Furthermore, the transmission structure also includes a flexible connector. The slide block is slidably mounted on the slide rail. The lower end of the slide block extends below the slide rail and has a gap with the lower end face of the slide rail. A sliding hole is provided on the lower end face of the slide block. The flexible connector is in the shape of an "I". The "I"-shaped flexible connector is slidably mounted in the sliding hole through the middle vertical rod. The upper horizontal bar of the "I"-shaped flexible connector is movably mounted at the gap between the lower end of the slide block and the lower end of the slide rail. The lower horizontal bar of the "I"-shaped flexible connector is used to connect the connecting plate.

[0012] Furthermore, the upper end of the drive motor is installed and connected to the lower end of the bag-cutting machine housing, and the bottom of the drive motor and the bottom of several mounting seats are respectively supported by the frame.

[0013] Furthermore, the drive shaft is provided with several drive sprockets of different heights, and the mounting seats at the lower ends of several driven sprockets are respectively set on the frame by pads of different heights, and the driven sprockets are respectively set at the same height as the corresponding drive sprockets by pads.

[0014] Furthermore, a base is provided between the pad and the frame. The base is fixed on the frame, and the upper end of the base is provided with a groove in the same direction as the slide rail. The pad is slidably positioned in the groove. An adjusting block is fixed on the side of the base near the drive sprocket. An adjusting bolt is threaded onto the adjusting block. One end of the adjusting bolt presses against the side wall of the pad. The adjusting bolt is used to push the adjusting block and the mounting base to move along the groove to the side away from the drive sprocket.

[0015] Further, the home position sensor and the arrival position sensor are further included, the inside of the support shell is respectively provided with the home position sensor and the arrival position sensor at both ends of the slide rail, and the home position sensor and the arrival position sensor are electrically connected with the driving motor.

[0016] Further, the sliding material platform is further included, the upper end of the driving motor is provided with the sliding material platform, the driving shaft of the driving motor passes through the sliding material platform and is vertically arranged at the center of the inside of the cutting bag machine shell, the upper end of the sliding material platform is connected with the lower end of the cutting bag machine shell through a plurality of support columns, and the upper end surface of the sliding material platform is composed of a plurality of slopes which are arranged from the center to the outside and downward.

[0017] Further, the lower end of the cutting bag machine shell is further provided with a plurality of air blowing devices which face the driving shaft of the driving motor, and the air blowing devices are used for blowing air to the direction of the driving shaft of the driving motor.

[0018] The utility model discloses the beneficial effect is:

[0019] The utility model discloses an integrated cutting bag machine shell which is composed of a plurality of support shells arranged at equal intervals around a center, and the reverse slope on the support shell can guarantee the flatness of the cutting bag machine shell and promote the free sliding of the falling material through the reverse slope, thereby avoiding the problem of accumulated material after cutting. The reverse slope on the two sides of the upper end of the support shell and the cutting slot in the middle, in combination with the vertical side wall of the support shell and the open bottom of the support shell, can make the falling material quickly fall down and directly fall from the open bottom, thereby avoiding the accumulation of material. The structure of the cutting bag machine shell, in combination with the cutting slot and the cutting tool, can realize the cutting mode of cutting from the center point to the outside, thereby ensuring the cutting efficiency of the ton bag.

[0020] The hollow conveying mechanism adopts the end-to-end support mode of the chain, the driving sprocket and the driven sprocket. The chain is horizontally placed. The two sides of the chain are correspondingly arranged on the two sides of the cutting slot in the inside of the support shell, so that the particulate material cannot directly fall on the chain. A small amount of particulate material falling from the cutting slot can freely fall from the hollow part of the chain to avoid accumulation.

[0021] To prevent the ton bag from being cut and the particulate material from accumulating on the driving shaft, the driving sprocket and the chain, the air blowing device is designed. When in use, the air blowing device can be arranged at equal intervals around the driving motor to achieve the purpose of blowing material at multiple angles, thereby solving the problem of central accumulation. DRAWINGS

[0022] Figure 1 The utility model discloses a cutting bag machine shell structure schematic view of cutting bag machine of the utility model puts forward;

[0023] Figure 2The utility model provides a kind of overall structure schematic diagram of bale cutter proposed by the utility model.

[0024] Figure 3 The utility model provides a kind of driving structure structure schematic diagram of bale cutter proposed by the utility model.

[0025] Figure 4 The utility model provides a kind of transmission structure structure schematic diagram of bale cutter proposed by the utility model.

[0026] Figure 5 The utility model provides a kind of structure schematic diagram at driven sprocket of bale cutter proposed by the utility model.

[0027] Figure 6 The utility model provides a kind of structure schematic diagram of homing sensor and in-place sensor of bale cutter proposed by the utility model.

[0028] Figure 7 The utility model provides a kind of structure schematic diagram of dust cover of bale cutter proposed by the utility model.

[0029] Fig. 1. bale cutter shell, 2. detection sensor, 3. cutting tool, 4. driving motor, 5. sliding material platform, 6. blowing device, 7. driving sprocket, 8. slide rail, 9. chain, 10. fixed part, 11. sliding seat, 12. mounting seat, 13. cushion block, 14. connecting plate, 15. reverse slope, 16. homing sensor, 17. in-place sensor, 18. dust cover, 19. driven sprocket, 20. lifting device, 21. base, 22. adjusting block, 23. adjusting bolt, 24. chain outer section, 25. soft connecting piece. DETAILED DESCRIPTION

[0030] The utility model is described in detail below in connection with the drawings.

[0031] As shown in the accompanying drawings, Figure 1 The utility model discloses a kind of bale cutter, including bale cutter shell 1, cutting tool 3 and driving structure, bale cutter shell 1 is formed by the center connection of double number of equidistantly arranged support shell, the upper end of each support shell is all set with cutting slit extending from the center of bale cutter shell 1 to the end away from center, cutting tool 3 is slidably arranged in each cutting slit 12, the inside of support shell is equipped with the driving structure for driving cutting tool 3 reciprocating motion along cutting slit 12, the upper end face of support shell at cutting slit 12 two sides is all the reverse slope 15 of setting towards down from cutting slit 12 outward, the side wall of support shell is all vertical surface, and the bottom of support shell is open.

[0032] The utility model discloses a cutting bag machine shell body 1 that is constituted by the integrative cutting bag machine shell body 1 of double number equal interval arrangement's support shell body around a center connection, cooperate its reverse slope 15, can guarantee the flatness of cutting bag machine shell body 1, and can promote the free slide of blanking through reverse slope 15, avoids the problem of the accumulated material after cutting, the reverse slope 15 of support shell body upper end both sides is the setting of cutting slit 12 in the middle, cooperates the vertical side wall of support shell body and the bottom of support shell body's open, can make blanking fall rapidly, and make the blanking from cutting slit 12, can directly fall from the open bottom, avoids the material stacking, the structure of cutting bag machine shell body 1 cooperates the cutting slit and cutting tool 3 on it, can realize the cutting mode of cutting from the center point to the outside, thereby guaranteeing the cutting efficiency of ton bag.

[0033] As shown in the accompanying drawings Figure 2 And as shown in the accompanying drawings Figure 3 In another embodiment based on the above, the drive structure includes a drive motor 4, a driving sprocket 7, a chain 9, a driven sprocket 19, a mounting seat 12, a slide rail 8, and a transmission structure. The drive shaft of the drive motor 4 is vertically arranged at the center inside the cutting bag machine shell body 1. A plurality of driving sprockets 7 are arranged on the drive shaft corresponding to the number of support shell bodies. A driven sprocket 19 is rotatably mounted at one end of each support shell body away from the center of the cutting bag machine shell body 1 through a mounting seat 12. A chain 9 is sleeved between the driving sprocket 7 and the corresponding driven sprocket 19. A slide rail 8 is arranged inside the support shell body along the direction of the cutting slit 12. A cutting tool 3 is slidably arranged on the slide rail 8 through a transmission structure and connected with the chain 9. The drive motor 4 is used to drive the plurality of driving sprockets 7 to synchronously drive the transmission structure on the corresponding chain 9 to move along the slide rail 8 in the cutting slit 12 with the cutting tool 3.

[0034] In the present scheme, a hollow conveying mechanism with a chain 9, a driving sprocket 7, and a driven sprocket 19 is used in a head-to-tail supporting mode. The chain 9 is horizontally placed. The two sides of the chain 9 are arranged corresponding to the two sides of the cutting slit inside the support shell body, so that the particulate material cannot directly fall on the chain 9. A small amount of particulate material falling from the cutting slit can freely fall from the hollow part of the chain 9 to avoid accumulation. The drive structure in the present scheme is a motor-driven pull chain type, which can also be replaced by an electric drive synchronous belt, gear, or other micro power mechanisms.

[0035] As shown in the accompanying drawings Figure 4 In a further embodiment based on the above, the transmission structure includes a fixing piece 10, a sliding seat 11, a connecting plate 14, and a chain outer link 24. The slide rail 8 is arranged above the chain 9. The sliding seat 11 is slidably arranged on the slide rail 8. The cutting tool 3 is mounted on the upper end of the sliding seat 11 through the fixing piece 10. The lower end of the sliding seat 11 is mounted with the connecting plate 14, which is fixedly connected to the chain 9 through the chain outer link 24.

[0036] In this solution, the cutting tool 3 is detachably fixed to the fixing part 10 of the transmission structure using a clamping principle. The fixing part 10 is provided with several mounting holes, and the cutting tool 3 can be quickly changed by tightening and loosening the screws.

[0037] In a further embodiment based on the above, the transmission structure also includes a flexible connector 25. The slide block 11 is slidably disposed on the slide rail 8. The lower end of the slide block 11 extends to the bottom of the slide rail 8 and there is a gap between it and the lower end face of the slide rail 8. A sliding hole is provided on the lower end face of the slide block 11. The flexible connector 25 is in the shape of an "I". The "I" shaped flexible connector 25 is slidably disposed in the sliding hole through the middle vertical rod. The upper horizontal bar of the "I" shaped flexible connector 25 is movably disposed at the gap between the lower end of the slide block 11 and the lower end of the slide rail 8. The lower horizontal bar of the "I" shaped flexible connector 25 is used to connect the connecting plate 14.

[0038] In this design, the cutting tool 3 is fixed to the slide 11 by the fixing member 10. The lower end of the slide 11 is connected to the flexible connector 25 by a floating connection. The flexible connector 25 is connected to the outer link 24 of the chain 9 by the connecting plate 14, thereby achieving the effect of flexible connection. In use, the flexible connector 25 can float up and down with the chain 9 without affecting the movement of the slide 11, thereby reducing the hardware friction and resistance of the chain 9 and increasing the flexibility of the mechanism. At the same time, the sliding hole can be designed with a diameter not less than the outer diameter of the middle vertical rod of the flexible connector 25, thereby achieving the technical effect that the flexible connector 25 can be adjusted with the chain 9 in the front, back and left and right directions.

[0039] In a further embodiment based on the above, the upper end of the drive motor 4 is installed and connected to the lower end of the bag cutter housing 1, and the bottom of the drive motor 4 and the bottom of several mounting seats 12 are respectively supported by the frame.

[0040] As attached Figure 5 As shown, the drive shaft is provided with several drive sprockets 7 of different heights, and the mounting bases 12 at the lower ends of several driven sprockets 19 are respectively set on the frame by pads 13 of different heights, and the driven sprockets 19 are respectively set at the same height as the corresponding drive sprockets 7 by pads 13.

[0041] Among them, a base 21 is provided between the pad 13 and the frame. The base 21 is fixed on the frame. The upper end of the base 21 is provided with a slide groove in the same direction as the slide rail 8. The pad 13 is limited and slidably disposed in the slide groove. An adjusting block 22 is fixed on the side of the base 21 near the drive sprocket 7. An adjusting bolt 23 is threadedly connected to the adjusting block 22. One end of the adjusting bolt 23 presses against the side wall of the pad 13. The adjusting bolt 23 is used to push the adjusting block 22 and the mounting base 12 to move along the slide groove to the side away from the drive sprocket 7.

[0042] In further embodiments based on the above, the lifting device 20 is installed on one side of the mounting seat 12 close to the driving sprocket 7, and is used to roll the chain 9 above the lifting device.

[0043] In this scheme, the lifting device 20 is horizontally installed, avoiding the risk of chain 9 sagging or falling off the sprocket; the sliding bearing is ingeniously designed inside the lifting device 20, and the rolling bearing type roller mechanism is adopted, which can roll in forward and reverse directions while lifting the chain 9, thereby reducing the friction and damage to the chain 9, solving the problems of chain sagging and falling off, and reducing the friction between the lifting device 20 and the chain 9.

[0044] As shown in the accompanying Figure 6 In further embodiments based on the above, the homing sensor 16 and the to-position sensor 17 are also included, and the homing sensor 16 and the to-position sensor 17 are respectively arranged inside the support shell and located at both ends of the sliding rail 8, and are electrically connected with the driving motor 4. In this scheme, the homing sensor 16 and the to-position sensor 17 can be arranged inside each support shell, or unified measurement and positioning can be performed through the homing sensor 16 and the to-position sensor 17 inside one support shell. In use, when the ton bag falls onto the device, the cutting tool 3 is driven to move outward by the driving structure to cut, and when the cutting tool 3 moves to the to-position sensor 17, the driving structure stops moving; after 2S, the driving structure moves back with the cutting tool 3 to the position of the homing sensor 16, i.e. the original position, and the driving structure stops moving.

[0045] As shown in the accompanying Figure 7 In further embodiments based on the above, the sliding material platform 5 is also included, and the sliding material platform 5 is installed on the upper end of the driving motor 4, the driving shaft of the driving motor 4 passes through the sliding material platform 5 and is vertically arranged at the center inside the bale cutter shell 1, the upper end of the sliding material platform 5 is connected to the lower end of the bale cutter shell 1 through a plurality of support columns, and the upper end surface of the sliding material platform 5 is composed of a plurality of slopes arranged from the center outward and downward.

[0046] In this scheme, the pyramid-shaped slope dust cover 18 is installed below the center where a plurality of cutting seams converge on the bale cutter shell 1, and on the upper end of the driving shaft of the driving motor 4, which can effectively prevent material from piling up. The installation support of the sliding rail 8 can be arranged on the sliding material platform 5, which can maximize the concentricity of each cutting tool 3 and the corresponding support shell, avoiding the collision or friction during the movement of the cutting tool caused by processing; the arrangement of the dust cover 18 can avoid a large amount of material falling directly on the chain 9 and sprocket below. In this scheme, the sliding material platform 5 is pyramid-shaped, and each corner of the lower end of the pyramid-shaped sliding material platform 5 is vertically cut off, so as to achieve the least contact surface and the greatest degree of material sliding.

[0047] In the further embodiment based on the above, the lower end of the bale cutter housing 1 is further provided with a plurality of air blowing devices 6 facing the drive shaft of the driving motor 4, which are used to blow air towards the direction of the drive shaft of the driving motor 4.

[0048] In the present scheme, in order to prevent the bale from being cut and the material from accumulating on the drive shaft, the driving sprocket 7 and the chain 9, the air blowing device 6 is designed, which can be arranged around the driving motor 4 in four groups at equal intervals in use, so as to achieve the purpose of blowing material at multiple angles and solve the problem of central material accumulation. The air blowing device 6 in the present scheme can be composed of an air pipe, an air nozzle and an air cylinder, etc.

[0049] A specific embodiment of the utility model is as follows:

[0050] The device can be provided with a detection sensor 2 as needed, and the upper end of the detection sensor 2 can also be treated with a bevel or a taper, which can all reduce material accumulation. In use, the ton bag falls first and contacts the cutting tool 3, and then the ton bag continues to fall and is detected by the detection sensor 2, the detection sensor 2 controls the driving structure to synchronously drive the cutting tool 3 to slide uniformly and stably along the cutting seam to the in-place sensor 17, the in-place sensor 17 transmits a signal to the driving structure and controls it to stop moving; after 2S, the driving structure is automatically started and moves back to the position of the homing sensor 16 with the cutting tool 3, the homing sensor 16 transmits a signal to the driving structure and controls it to stop moving, and waits for the next cutting.

[0051] It should be noted that the terms such as "upper", "lower", "left", "right", "front", "back" and the like cited in the utility model are only for the convenience of clear description, and are not used to limit the scope of the utility model, and the change or adjustment of the relative relationship is also regarded as the scope of the utility model without substantial change of the technical content.

[0052] The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited to the above-mentioned embodiments, and any technical solution belonging to the idea of the utility model is within the protection scope of the utility model. It should be noted that for ordinary technical personnel in the technical field, some improvements and decorations without departing from the principle of the utility model are regarded as the protection scope of the utility model.

Claims

1. A bale cutter characterized by: The package cutter housing (1), the cutting blade (3), and the drive structure are included. The package cutter housing (1) is composed of an even number of equally spaced support housings connected around a center. Each support housing has a cutting slit extending from the center of the package cutter housing (1) to a point away from the center. Each cutting slit has a slidably arranged cutting blade (3). The interior of each support housing is provided with a drive structure for driving the cutting blade (3) to reciprocate along the cutting slit. The upper end faces of the support housings on both sides of the cutting slit are downward-facing reverse inclined surfaces (15) from the cutting slit outwards. The side walls of the support housings are all vertical surfaces. The bottom of the support housings is open.

2. A bale cutter as claimed in claim 1 wherein: The drive structure includes a drive motor (4), a drive sprocket (7), a chain (9), a driven sprocket (19), a mounting base (12), a slide rail (8), and a transmission structure. The drive shaft of the drive motor (4) is vertically positioned at the center inside the bag cutter housing (1). Several drive sprockets (7) are provided on the drive shaft corresponding to the number of support housings. A driven sprocket (19) is rotatably mounted on one end of each support housing away from the center of the bag cutter housing (1) via the mounting base (12). A chain (9) is sleeved between the drive sprocket (7) and the corresponding driven sprocket (19). A slide rail (8) is also provided inside the support housing along the direction of the cutting seam. The cutting tool (3) is slidably mounted on the slide rail (8) through the transmission structure and connected to the chain (9). The drive motor (4) is used to drive several drive sprockets (7) to synchronously drive the transmission structure on the corresponding chain (9) to carry the cutting tool (3) along the slide rail (8) in the cutting seam.

3. A bale cutter as claimed in claim 2 wherein: The transmission structure includes a fixing member (10), a slide block (11), a connecting plate (14), and a chain outer section (24). The slide rail (8) is located above the chain (9). The slide block (11) is slidably mounted on the slide rail (8). The cutting tool (3) is mounted on the upper end of the slide block (11) through the fixing member (10). The connecting plate (14) is mounted on the lower end of the slide block (11). The connecting plate (14) is fixedly connected to the chain (9) through the chain outer section (24).

4. A bale cutter as claimed in claim 3 wherein: The transmission structure also includes a flexible connector (25). The slide block (11) is slidably disposed on the slide rail (8). The lower end of the slide block (11) extends to the bottom of the slide rail (8) and there is a gap between it and the lower end face of the slide rail (8). A sliding hole is provided on the lower end face of the slide block (11). The flexible connector (25) is in the shape of an "I". The "I" shaped flexible connector (25) is slidably disposed in the sliding hole through the middle vertical rod. The upper horizontal bar of the "I" shaped flexible connector (25) is movably disposed at the gap between the lower end of the slide block (11) and the lower end of the slide rail (8). The lower horizontal bar of the "I" shaped flexible connector (25) is used to connect the connecting plate (14).

5. A bale cutter as claimed in claim 2 wherein: The upper end of the drive motor (4) is installed and connected to the lower end of the bag cutter housing (1), and the bottom of the drive motor (4) and the bottom of several mounting seats (12) are respectively supported by the frame.

6. A bale cutter according to claim 5 wherein: The driving shaft is provided with a plurality of different height driving sprockets (7), the mounting seat (12) of the lower end of a plurality of driven sprockets (19) is arranged on the rack through different height pads (13), and the driven sprockets (19) are arranged at the height flush with the corresponding driving sprockets (7) through the pads (13).

7. A bale cutter according to claim 6 wherein: The pad (13) and the rack are further provided with a base (21), the base (21) is fixed on the rack, the upper end of the base (21) is provided with a sliding groove in the same direction as the sliding rail (8), the pad (13) is limitedly and slidably arranged in the sliding groove, the side of the base (21) close to the driving sprocket (7) is fixed with an adjusting block (22), the adjusting block (22) is threadedly connected with an adjusting bolt (23), one end of the adjusting bolt (23) is pressed against the side wall of the pad (13), and the adjusting bolt (23) is used to push the adjusting block (22) to move the mounting seat (12) along the sliding groove away from the driving sprocket (7).

8. A bale cutter according to claim 2 wherein: Further comprising a homing sensor (16) and a to-position sensor (17), the inside of the shell body and the two ends of the sliding rail (8) are respectively provided with a homing sensor (16) and a to-position sensor (17), and the homing sensor (16) and the to-position sensor (17) are electrically connected with the driving motor (4).

9. A bale cutter as claimed in claim 2 wherein: Further comprising a sliding material platform (5), the upper end of the driving motor (4) is provided with the sliding material platform (5), the driving shaft of the driving motor (4) penetrates through the sliding material platform (5) and is vertically arranged at the center of the inside of the bale cutter shell body (1), the upper end of the sliding material platform (5) is connected with the lower end of the bale cutter shell body (1) through a plurality of support columns, and the upper end surface of the sliding material platform (5) is composed of a plurality of slopes arranged from the center outward and downward.

10. The bag opening machine of claim 2, wherein: The lower end of the bale cutter shell body (1) is further provided with a plurality of air blowing devices (6) facing the driving shaft of the driving motor (4), and the air blowing devices (6) are used for blowing air to the direction of the driving shaft of the driving motor (4).

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