阅读说明：本技术 一种防缠绕的反向退刀式破袋机 (Antiwind reverse tool retracting type bag breaking machine ) 是由 罗亮 卢艳娟 萧艳明 于 2021-08-20 设计创作，主要内容包括：本发明公开了一种防缠绕的反向退刀式破袋机,应用在破袋设备领域,解决了物料容易缠绕在破袋刀上,导致刀具堵卡和磨损的技术问题,其技术方案要点是：包括机架和设置在机架上的定刀组件；机架上设置有动刀组件；动刀组件包括与机架转动连接的转筒和转动设置在转筒上的动刀片,转筒上开设有供动刀片伸入的收刀口,转筒内固定设置有使动刀片保持伸出到转筒外的靠模组件,转筒的轴线水平设置；机架上设置有驱动转筒转动的传动组件；定刀组件包括定刀轴和定刀片,定刀片从定刀轴处朝向转筒的方向延伸；转筒内壁和动刀片之间设置有驱动动刀片收入转筒内的收刀驱动件；具有的技术效果是能够较好的避免物料缠绕在刀具上,避免刀具堵卡和磨损的情况。(The invention discloses an anti-winding reverse retracting type bag breaking machine, which is applied to the field of bag breaking equipment and solves the technical problems of cutter blockage and abrasion caused by the fact that materials are easy to wind on a bag breaking cutter, and the technical scheme is characterized in that: comprises a frame and a fixed cutter component arranged on the frame; a moving blade component is arranged on the frame; the movable cutter assembly comprises a rotary drum which is rotatably connected with the rack and a movable cutter blade which is rotatably arranged on the rotary drum, a knife retracting opening into which the movable cutter blade extends is formed in the rotary drum, a profiling assembly which enables the movable cutter blade to keep extending out of the rotary drum is fixedly arranged in the rotary drum, and the axis of the rotary drum is horizontally arranged; a transmission component for driving the rotary drum to rotate is arranged on the frame; the fixed cutter assembly comprises a fixed cutter shaft and a fixed cutter blade, and the fixed cutter blade extends from the fixed cutter shaft to the direction of the rotary drum; a knife retracting driving part for driving the movable blade to retract into the rotary drum is arranged between the inner wall of the rotary drum and the movable blade; the technical effect who has is that can be better avoid the material winding on the cutter, avoid the condition of cutter jam and wearing and tearing.)

1. An anti-winding reverse retracting type bag breaking machine comprises a machine frame (1) and a fixed cutter assembly (2) arranged on the machine frame (1);

the device is characterized in that the rack (1) is provided with a movable knife component (3);

the movable blade assembly (3) comprises a rotary drum (4) rotatably connected with the rack (1) and a movable blade (5) rotatably arranged on the rotary drum (4), a knife retracting opening (6) for the movable blade (5) to extend into is formed in the rotary drum (4), a profiling assembly (7) for keeping the movable blade (5) to extend out of the rotary drum (4) is fixedly arranged in the rotary drum (4), and the axis of the rotary drum (4) is horizontally arranged;

a transmission assembly (8) for driving the rotary drum (4) to rotate is arranged on the rack (1);

the fixed cutter assembly (2) comprises a fixed cutter shaft (9) fixedly connected with the rack (1) and a fixed cutter blade (10) arranged on the fixed cutter shaft (9), and the fixed cutter blade (10) extends from the fixed cutter shaft (9) to the direction of the rotary drum (4);

a knife retracting driving part for driving the movable blade (5) to retract into the rotary drum (4) is arranged between the inner wall of the rotary drum (4) and the movable blade (5);

a plurality of fixed cutter assemblies (2) are uniformly arranged along the axial direction of the rotary drum (4), and a plurality of movable blades (5) are arranged along the axial direction of the rotary drum (4);

the utility model discloses a fixed knife, including fixed blade (10), regulation end plate (16), be connected with fixed knife extension spring (17) on regulation end plate (16), be provided with between fixed knife extension spring (17) and the fixed knife holding shell (14) body and adjust fixed knife extension spring (17) elasticity adjusting part (18).

2. The anti-winding reverse-retracting bag breaking machine according to claim 1, wherein the upper side edge of the fixed blade (10) is provided with fixed-knife bag breaking teeth (12);

when the movable blade (5) rotates to the fixed blades (10), the movable blade (5) extends into the space between two adjacent fixed blades (10), and movable blade bag breaking teeth (13) are arranged on one side, close to the fixed blades (10), of the movable blade (5).

3. The anti-winding reverse-retracting bag breaking machine according to claim 1, wherein a fixed cutter accommodating shell (14) is arranged on the machine frame (1), and one end of the fixed cutter blade (10) far away from the rotary drum (4) extends into the fixed cutter accommodating shell (14);

the fixed cutter blade (10) is rotatably connected with a fixed cutter shaft (9), the axis of the fixed cutter shaft (9) is parallel to the axis of the rotary drum (4), and a swing groove (15) for the fixed cutter blade (10) to pass through when swinging is formed in the fixed cutter accommodating shell (14).

4. The anti-winding reverse knife-withdrawing bag breaking machine as claimed in claim 3, wherein the adjusting assembly (18) comprises an adjusting sleeve (19) fixedly connected with the fixed knife containing shell (14), a sliding block (20) and an adjusting pull rod (21), the sliding block (20) is arranged in the adjusting sleeve (19) in a sliding manner, and one end of the fixed knife tension spring (17) far away from the adjusting end plate (16) is connected with the sliding block (20);

adjust pull rod (21) one end and sliding block (20) and rotate and be connected, adjust pull rod (21) and keep away from the one end of sliding block (20) and extend adjusting sleeve (19), adjust pull rod (21) and adjusting sleeve (19) screw-thread fit.

5. An anti-wrap reverse-retracting bag breaker according to claim 3, wherein the side of the stationary knife containment case (14) facing the drum (4) is provided with a guide ramp (22).

6. The anti-winding reverse-cutter-retracting bag breaking machine is characterized in that the profile modeling assembly (7) comprises a fixed shaft (23) fixedly connected with the machine frame (1) and a plurality of profile modeling plates (24), the plurality of profile modeling plates (24) are arranged side by side along the length direction of the fixed shaft (23), and the cross section of the fixed shaft (23) is arranged in a square shape;

the fixed shaft (23) is sleeved with a spacer bush (25), and a plurality of the profiling plates (24) simultaneously penetrate through locking screws (26) in threaded fit with the spacer bush (25).

7. The anti-winding reverse knife-withdrawing bag breaking machine is characterized in that one end, facing a master plate (24), of the movable blade (5) is rotatably connected with a roller (27), one side, close to the fixed blade (10), of the master plate (24) is provided with a limiting arc surface (28) protruding outwards, and the limiting arc surface (28) is abutted against the roller (27) to enable the movable blade (5) to keep extending out of the knife retracting port (6);

the die holder is characterized in that an avoidance surface (29) enabling the die holder (24) to be separated from the roller (27) in a butting mode is arranged at the lower side position of the die holder (24), an inwards concave reversing arc surface (30) is arranged on one side, away from the fixed blade (10), of the die holder (24), and the reversing arc surface (30) is in butting connection with the roller (27).

8. The anti-winding reverse knife-withdrawing bag breaking machine as claimed in any one of claims 1-7, wherein the knife retracting driving member is a knife retracting tension spring (31), and two ends of the knife retracting tension spring (31) are respectively connected with the movable blade (5) and the inner wall of the rotary drum (4).

9. The anti-winding reverse knife-withdrawing bag breaking machine as claimed in any one of claims 1-7, wherein a fixed seat (32) is fixedly connected to the inner wall of the rotary drum (4), a rotary shaft (33) is fixedly connected to the fixed seat (32), and the movable blade (5) is rotatably matched with the rotary shaft (33);

the knife retracting driving piece is a knife retracting torsion spring (34) sleeved on the rotating shaft (33), and two ends of the knife retracting torsion spring (34) are respectively connected with the fixed seat (32) and the movable blade (5).

10. The anti-winding reverse-retracting bag breaking machine according to claim 1, wherein the outer side wall of the rotary drum (4) is provided with annular rails (35) near two ends, and the rack (1) is provided with I-shaped supporting wheels (36) matched with the annular rails (35);

the transmission assembly (8) comprises a driving motor (37), a speed reduction gear set (38), a driven pulley (39) and a driving pulley (40), wherein the driving motor (37) is arranged on the rack (1), the speed reduction gear set (38) is driven to rotate through belt transmission, an output shaft of the speed reduction gear set (38) is connected with the driving pulley (40), the rotary drum (4) is coaxially connected with the driven pulley (39), and the driven pulley (39) and the driving pulley (40) are driven through belts.

Technical Field

The invention relates to the field of bag breaking equipment, in particular to an anti-winding reverse retracting type bag breaking machine.

Background

The wet garbage refers to perishable organic garbage such as discarded fruit and vegetable and food leftovers, melon and fruit peels in daily life of a family. In addition, the main components of the vegetable field garbage are discarded organic garbage such as rotten fruits, vegetables, fish, poultry and other animal viscera, and are also main sources of kitchen garbage.

The kitchen waste pretreatment technology is a key link for kitchen waste disposal, and reasonable pretreatment processes are needed for matching no matter the terminal is incineration, aerobic, dry and wet anaerobic. The pretreatment technology is combined with the characteristics of kitchen garbage, and instability and complexity are presented along with different advancing progresses, seasons and regions of garbage classification. Therefore, the pretreatment of the kitchen waste is a major technical bottleneck for the development of the difficult industry. The kitchen waste disposal is built and put into operation in China, the process route is diversified, and the main process route is biological hydrolysis process, high-temperature hydrolysis, crushing, sorting and pulping. The crushing, sorting and pulping is the best process route matched with wet anaerobic process in comprehensive consideration of investment cost, stable operation, controllable environment, water and electricity heat consumption, organic matter extraction rate and the like.

In the crushing, sorting and pulping process chain, in order to reduce the abrasion of crushing equipment, the front end of the process needs to sort large substances of materials, and in order to ensure the recovery rate of more organic matters, the materials need to be subjected to bag breaking treatment, so that the recovery of the bagged organic matters can be ensured. In the operation of kitchen waste project in the prior industry, the recovery rate of organic matters in a processing line without bag breaking function is lower than 50 percent, mainly because the organic matters in the bagged materials are greatly lost. However, the equipment with the bag breaking function is difficult in industry at present, poor in operation stability, low in handling capacity and high in failure rate, and the main problems are mainly focused on serious material winding, and serious cutter blockage and abrasion.

At present, the chinese patent application with publication number CN106144092A discloses a garbage bag breaking machine, which comprises a bag breaking knife, a main shaft, a machine frame and a driving mechanism; the main shaft is arranged in the machine body frame, a plurality of bag breaking knives are arranged on the main shaft, and the main shaft is driven to rotate by the driving mechanism; the front side edge of the bag breaking knife is in a sawtooth shape, and the bottom of the bag breaking knife is provided with a buckle part; a plurality of circular fixing discs are uniformly arranged on the main shaft, and a plurality of blade fixing shafts are fixed around the main shaft in parallel through the circular fixing discs; the bag breaking knives are fixed on the blade fixing shaft through the buckle component, so that a blade group is formed between every two circular fixing disks, all the bag breaking knives of each blade group are uniformly distributed around the main shaft, and the directions pointed by the serrated front side knife edges are the same as the rotating direction of the main shaft.

Although the existing garbage bag breaking machine can be used for bag breaking processing, the bag breaking cutters are fixedly connected with the main shaft, and materials are easily wound on the bag breaking cutters, so that the cutters are blocked and abraded.

Disclosure of Invention

The invention aims to provide an anti-winding reverse retracting type bag breaking machine which has the advantages that materials can be well prevented from being wound on a cutter, and therefore the situation that the cutter is blocked and abraded is avoided.

The technical purpose of the invention is realized by the following technical scheme: an anti-winding reverse retracting type bag breaking machine comprises a machine frame and a fixed cutter assembly arranged on the machine frame;

the movable cutter component is arranged on the frame;

the movable blade assembly comprises a rotary drum which is rotatably connected with the rack and a movable blade which is rotatably arranged on the rotary drum, a knife retracting opening into which the movable blade extends is formed in the rotary drum, a profiling assembly which enables the movable blade to keep extending out of the rotary drum is fixedly arranged in the rotary drum, and the axis of the rotary drum is horizontally arranged;

the rack is provided with a transmission assembly for driving the rotary drum to rotate;

the fixed cutter assembly comprises a fixed cutter shaft fixedly connected with the frame and a fixed cutter blade arranged on the fixed cutter shaft, and the fixed cutter blade extends from the fixed cutter shaft to the direction of the rotary drum;

a knife retracting driving piece for driving the movable blade to retract into the rotary drum is arranged between the inner wall of the rotary drum and the movable blade;

a plurality of fixed cutter assemblies are uniformly arranged along the axial direction of the rotary drum, and a plurality of movable blades are arranged along the axial direction of the rotary drum;

the fixed blade is provided with an adjusting end plate far away from the rotating end, the adjusting end plate is connected with a fixed cutter tension spring, and an adjusting assembly for adjusting the tightness of the fixed cutter tension spring is arranged between the fixed cutter tension spring and the fixed cutter accommodating shell.

According to the technical scheme, the fixed cutter shaft in the fixed cutter assembly is used for mounting the fixed cutter blade, and the fixed cutter blade is used for supporting bagged garbage; the transmission component is used for driving the rotary drum to rotate, and the rotary drum can drive the movable blade to rotate, so that the movable blade and the fixed blade can be matched to cut garbage bags filled with garbage; the knife-retracting opening formed in the rotary drum can be used for retracting the knife blade into the rotary drum, so that the material is better prevented from being wound on the knife; the profiling assembly enables the movable blade to always keep a protruding state on one side of the rotary drum close to the fixed blade, so that the movable blade can be stably matched with the fixed blade; the knife retracting driving piece is used for driving the movable blade to be stably retracted into the rotary drum, so that materials are further prevented from being wound on the knife; the fixed blades and the movable blades are arranged in plurality along the axial direction of the rotary drum, so that a plurality of garbage bags can be simultaneously subjected to bag breaking treatment, and the bag breaking efficiency is better improved;

the fixed cutter tension spring is used for tensioning the fixed blade to keep the fixed blade in a horizontal position; the fixed cutter tension spring has certain elasticity, so that the fixed cutter blade can rotate downwards when the fixed cutter blade is subjected to larger impact force, and the fixed cutter blade is prevented from being damaged.

The invention is further configured to: the upper side of the fixed blade is provided with fixed cutter bag breaking teeth;

when the movable blade rotates to the fixed blades, the movable blade extends into the space between every two adjacent fixed blades, and movable blade bag breaking teeth are arranged on one side, close to the fixed blades, of the movable blade.

Through the technical scheme, the movable blades and the fixed blades are arranged in a staggered manner, so that the movable blades can better pierce the garbage bag when rotating, and the garbage can conveniently fall down; the fixed knife bag breaking teeth and the movable knife bag breaking teeth can better pierce the garbage bag, so that the bag breaking treatment can be carried out more quickly.

The invention is further configured to: a fixed cutter accommodating shell is arranged on the rack, and one end of the fixed blade, which is far away from the rotary drum, extends into the fixed cutter accommodating shell;

the fixed blade is rotatably connected with a fixed cutter shaft, the axis of the fixed cutter shaft is parallel to the axis of the rotary drum, and the fixed cutter accommodating shell is provided with a swinging groove for the fixed blade to pass through when swinging.

Through above-mentioned technical scheme, the stationary knife holds the shell and is arranged in holding stationary knife axle and stationary knife piece, and the swing groove is arranged in supplying the stationary knife piece to accomodate into the stationary knife and holds the shell to avoid on the material twines the stationary knife piece, further avoid the wearing and tearing of cutter.

The invention is further configured to: the adjusting assembly comprises an adjusting sleeve fixedly connected with the fixed cutter accommodating shell, a sliding block and an adjusting pull rod, the sliding block is arranged in the adjusting sleeve in a sliding mode, and one end, far away from the adjusting end plate, of the fixed cutter tension spring is connected with the sliding block;

one end of the adjusting pull rod is rotatably connected with the sliding block, one end of the adjusting pull rod, which is far away from the sliding block, extends out of the adjusting sleeve, and the adjusting pull rod is in threaded fit with the adjusting sleeve.

Through the technical scheme, the sliding block can be driven to slide in the adjusting sleeve by rotating the adjusting pull rod, and the fixed cutter tension spring can be pulled, so that the angle of the fixed cutter blade can be changed, and the size of the impact force borne by the fixed cutter blade can be changed.

The invention is further configured to: the side of the fixed cutter accommodating shell facing the rotary drum is provided with a guide inclined surface.

Through above-mentioned technical scheme, the guide inclined plane is used for guiding the rubbish in bags to slide into on the stationary blade to can be better break bag processing to rubbish in bags.

The invention is further configured to: the profiling assembly comprises a fixed shaft fixedly connected with the rack and a plurality of profiling plates, the profiling plates are arranged side by side along the length direction of the fixed shaft, and the cross section of the fixed shaft is arranged in a square shape;

the fixed shaft is sleeved with a spacer bush, and a plurality of the profiling plates simultaneously penetrate through locking screw rods in threaded fit with the spacer bush.

Through the technical scheme, the fixed shaft penetrates through the master plates, and different numbers of master plates can be selected to be combined according to actual needs so as to be suitable for different fixed blades; the spacer bush and the locking screw are used for locking a plurality of master plates together, so that the master plates can stably limit the position of the movable blade.

The invention is further configured to: the movable blade is rotatably connected with a roller towards one end of the backup plate, one side of the backup plate, which is close to the fixed blade, is provided with a limiting cambered surface which protrudes outwards, and the limiting cambered surface is abutted against the roller to enable the movable blade to keep a state of extending out of the retracting opening;

the lower side position of the template is provided with a clearance-avoiding surface which enables the template and the roller to be separated from butt joint, one side of the template, which is far away from the fixed blade, is provided with an inwards-concave reversing arc surface, and the reversing arc surface is abutted to the roller.

Through the technical scheme, when the roller is abutted to the limiting cambered surface, the movable blade is always ensured to extend out of the rotary drum by the aid of the template, so that the movable blade is matched with the fixed blade to break a garbage bag; when the roller rotates to enable the roller to be positioned in the clearance surface, the roller is separated from the contact with the profiling plate, the knife retracting driving piece drives the movable blade to be recovered into the roller, and materials are further prevented from being wound on the movable blade; the reversing cambered surface is used for guiding the movable blade to be converted from the state in the rotary drum into the state of extending out of the rotary drum.

The invention is further configured to: the knife retracting driving piece is a knife retracting tension spring, and two ends of the knife retracting tension spring are respectively connected with the movable blade and the inner wall of the rotary drum.

Through the technical scheme, the knife retracting tension spring has good elasticity, and can pull the movable blade to retract into the rotary drum, so that the material is better prevented from being wound on the movable blade.

The invention is further configured to: the inner wall of the rotary drum is fixedly connected with a fixed seat, a rotating shaft is fixedly connected to the fixed seat, and the movable blade is in rotating fit with the rotating shaft;

the knife retracting driving piece is a knife retracting torsion spring sleeved on the rotating shaft, and two ends of the knife retracting torsion spring are respectively connected with the fixed seat and the movable blade.

Through above-mentioned technical scheme, the fixing base is used for installing the pivot, and the pivot is used for installing receipts sword torsional spring, receives the sword torsional spring and can drive the movable blade and change over into the rotary drum.

The invention is further configured to: the outer side wall of the rotary drum is provided with annular rails at the positions close to the two ends, and the rack is provided with I-shaped supporting wheels matched with the annular rails;

the transmission assembly comprises a driving motor, a reduction gear set, a driven pulley and a driving pulley, wherein the driving motor, the reduction gear set, the driven pulley and the driving pulley are arranged on the rack, the driving motor drives the reduction gear set to rotate through belt transmission, an output shaft of the reduction gear set is connected with the driving pulley, the rotary drum is coaxially connected with the driven pulley, and the driven pulley and the driving pulley are in belt transmission.

Through above-mentioned technical scheme, during the annular rail can stretch into I shape supporting wheel, driving motor can be stable drive rotary drum through reduction gear group and belt transmission and rotate to stable drive knife section carries out work.

In conclusion, the invention has the following beneficial effects:

1. the limiting cambered surface on the profiling plate is used for keeping the movable blade in an extending state so that the movable blade and the fixed blade can stably carry out bag breaking processing, and meanwhile, the fixed blade and the fixed blade containing shell are in a floating fixed state through the fixed blade tension spring, so that the fixed blade can be retracted into the fixed blade containing shell through the swinging groove when the fixed blade receives large impact force, and the fixed blade is prevented from being worn;

2. when the movable blade is positioned at the position of the clearance surface on the template, the knife withdrawing driving piece can drive the movable blade to be withdrawn into the rotary drum from the position of the clearance, so that the material is prevented from being wound on the movable blade.

Drawings

Fig. 1 is an overall configuration diagram of the present embodiment;

FIG. 2 is a schematic structural view of the stationary blade assembly of the present embodiment;

FIG. 3 is a schematic structural view of the adjusting assembly of the present embodiment;

FIG. 4 is a schematic view of a connection structure of the rotary drum and the frame according to the present embodiment;

FIG. 5 is a schematic structural diagram of the master form assembly of the present embodiment;

FIG. 6 is a schematic view of the connection structure of the master plate and the fixed shaft of the present embodiment;

fig. 7 is a schematic view of the connection structure of the movable blade and the retracting driving member in this embodiment.

Reference numerals: 1. a frame; 2. a stationary knife assembly; 3. a movable knife component; 4. a rotating drum; 5. a movable blade; 6. a knife edge is closed; 7. a profiling assembly; 8. a transmission assembly; 9. fixing a cutter shaft; 10. fixing a blade; 12. breaking the bag teeth by a fixed cutter; 13. the movable knife breaks the bag teeth; 14. a stationary knife housing case; 15. a swing groove; 16. adjusting the end plate; 17. a fixed cutter tension spring; 18. an adjustment assembly; 19. an adjustment sleeve; 20. a sliding block; 21. adjusting the pull rod; 22. a guide ramp; 23. fixing a shaft; 24. profiling plates; 25. a spacer sleeve; 26. locking the screw rod; 27. a roller; 28. limiting the arc surface; 29. an air avoidance surface; 30. a reversing arc surface; 31. a cutter retracting tension spring; 32. a fixed seat; 33. a rotating shaft; 34. retracting the torsional spring; 35. an annular track; 36. a support wheel; 37. a drive motor; 38. a reduction gear set; 39. a driven pulley; 40. a driving pulley.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b):

referring to fig. 1 and 2, an anti-winding reverse-cutter-retreating type bag breaking machine comprises a frame 1 and a fixed cutter assembly 2 arranged on the frame 1, wherein the fixed cutter assembly 2 comprises a fixed cutter shaft 9 and a fixed cutter blade 10, the fixed cutter shaft 9 is fixedly connected to the frame 1 through a bolt, the length direction of the fixed cutter shaft 9 is horizontally arranged, and the fixed cutter blade 10 is rotatably connected with the fixed cutter shaft 9 through a bearing.

Referring to fig. 3, an adjusting end plate 16 is integrally formed at one end of the fixed blade 10, and a fixed blade tension spring 17 is hooked on the adjusting end plate 16; the upper side face of one end, away from the adjusting end plate 16, of the fixed blade 10 is provided with fixed cutter bag breaking teeth 12, six fixed blades 10 and six fixed cutter tension springs 17 are uniformly arranged along the length direction of the fixed cutter shaft 9, and the fixed cutter tension springs 17 and the fixed blades 10 are arranged in a one-to-one correspondence manner.

Referring to fig. 1 and 2, a fixed cutter accommodating shell 14 is bolted to the frame 1, one end of the fixed cutter shaft 9 and the fixed cutter bag breaking teeth 12 facing the adjusting end plate 16 are arranged in the fixed cutter accommodating shell 14, and the upper half part of one side of the fixed cutter accommodating shell 14 facing the fixed cutter bag breaking teeth 12 is provided with a guide inclined surface 22, and the guide inclined surface 22 is used for guiding a garbage bag to slide into the fixed blade 10; the lower half of the fixed cutter accommodating shell 14 is provided with a swing groove 15 near the fixed cutter 10, the fixed cutter 10 can be accommodated in the fixed cutter accommodating shell 14 through the swing groove 15, and the upper side surface of the fixed cutter 10 is abutted against the upper side surface of the swing groove 15.

Referring to fig. 2 and 3, an adjusting assembly 18 for adjusting the tightness of the fixed knife tension spring 17 is arranged between the fixed knife tension spring 17 and the fixed knife containing shell 14, the adjusting assembly 18 comprises an adjusting sleeve 19 welded on the fixed knife containing shell 14, a sliding block 20 and an adjusting pull rod 21, the adjusting sleeve 19 is a sleeve with a square cross section, the sliding block 20 is slidably arranged in the adjusting sleeve 19, and one end of the fixed knife tension spring 17 far away from the fixed knife 10 is hooked on the sliding block 20; the adjusting pull rod 21 is inserted into the adjusting sleeve 19, an adjusting nut is welded at one end of the adjusting sleeve 19, which is far away from the fixed blade 10, and the adjusting pull rod 21 is in threaded fit with the adjusting nut; adjusting pull rod 21 keeps away from adjusting nut's one end and sliding block 20 normal running fit, can drive sliding block 20 through rotating adjusting pull rod 21 and slide along adjusting sleeve 19's length direction, can adjust the contained angle of the relative horizontal plane of side on stationary blade 10, when the upper surface of stationary blade 10 and 15 upper surface butts of wobbling groove, can adjust the rate of tension of stationary blade extension spring 17 for stationary blade 10 can adapt to different impact forces.

Referring to fig. 1, a movable blade assembly 3 is arranged on a frame 1, the movable blade assembly 3 comprises a rotary drum 4 and five movable blades 5 which are rotatably connected with the frame 1, the axis of the rotary drum 4 is parallel to the length direction of a fixed blade shaft 9, five knife-retracting edges 6 are arranged on the rotary drum 4, four movable blades 5 are arranged corresponding to the four knife-retracting edges 6, and the movable blades 5 can be retracted into the rotary drum 4 through the knife-retracting edges 6.

Referring to fig. 4, the outer side wall of the drum 4 is welded with annular rails 35 near both ends, the rack 1 is bolted with i-shaped supporting wheels 36 matched with the annular rails 35, the annular rails 35 extend into the supporting wheels 36, and one annular rail 35 corresponds to two supporting wheels 36, so that the drum 4 can be stably supported.

Referring to fig. 1, a transmission assembly 8 for driving the drum 4 to rotate is disposed on the frame 1, and the transmission assembly 8 includes a driving motor 37, a reduction gear set 38, a driven pulley 39 and a driving pulley 40 disposed on the frame 1; the driving motor 37 and the reduction gear set 38 are both connected to the frame 1 through bolts, a main shaft of the driving motor 37 drives an input shaft of the reduction gear set 38 to rotate through a belt, an output shaft of the reduction gear set 38 is in key connection and matching with the driving pulley 40, one end of the rotary drum 4 is in bolt connection with the driven pulley 39, and the driving pulley 40 and the driven pulley 39 are in belt transmission; so that the driving motor 37 can rotate the drum 4.

Referring to fig. 5 and 6, fixedly connected with profiling subassembly 7 on the frame 1, profiling subassembly 7 sets up in rotary drum 4, profiling subassembly 7 include with frame 1 fixed connection's dead axle 23 and a plurality of profiling board 24, profiling board 24 is provided with five groups, and every group comprises five profiling boards 24, and profiling board 24 arranges the setting along the length direction of dead axle 23, and the cross-section of dead axle 23 is the square setting, has seted up the square groove the same with dead axle 23 cross-section on the profiling board 24.

Referring to fig. 4 and 6, five sets of moving blade assemblies 3 are uniformly arranged along the axial direction of the drum 4, and five sets of moving blade assemblies 3 are arranged corresponding to five sets of templates 24.

Referring to fig. 6, a spacer 25 is sleeved on the fixed shaft 23, each set of master template 24 corresponds to one spacer 25, four locking screws 26 penetrate through each set of master template 24 simultaneously, the locking screws 26 are in threaded fit with the spacers 25, and the locking screws 26 and the spacers 25 lock five master templates 24 in each set together, so that the master templates 24 can be stably placed on the fixed shaft 23 due to the relationship of gravity and the small fit clearance between the master templates 24 and the fixed shaft 23.

Referring to fig. 5 and 7, a knife retracting driving member for driving the movable blade 5 to retract into the rotary drum 4 is arranged between the inner wall of the rotary drum 4 and the movable blade 5, a fixed seat 32 is welded on the inner wall of the rotary drum 4 near the knife retracting port 6, a rotating shaft 33 is fixedly connected to the fixed seat 32, and the axial direction of the rotating shaft 33 is parallel to the axial direction of the rotary drum 4. The movable blade 5 is rotatably matched with the rotating shaft 33, and the movable blade 5 can extend out of one end of the rotating drum 4 and is provided with movable blade bag breaking teeth 13 on one side opposite to the fixed blade bag breaking teeth 12 (refer to fig. 3) on the fixed blade 10 (refer to fig. 1).

Referring to fig. 7, the knife retracting driving member may be a knife retracting torsion spring 34 sleeved on the rotating shaft 33, and two ends of the knife retracting torsion spring 34 are respectively connected to the fixed seat 32 and the movable blade 5.

Referring to fig. 7, the knife retracting driving member may also be a knife retracting tension spring 31, and two ends of the knife retracting tension spring 31 are respectively connected to the movable blade 5 and the inner wall of the rotary drum 4; the knife retracting driving part can also be combined by a knife retracting torsion spring 34 and a knife retracting tension spring 31 at the same time so as to improve the knife retracting force and further ensure stable knife retracting.

Referring to fig. 5, one end of the movable blade 5, which is far away from the movable blade bag breaking teeth 13, is rotatably connected with a roller 27, one side of the profiling plate 24, which is close to the fixed blade accommodating shell 14, is provided with a limiting cambered surface 28, the limiting cambered surface 28 protrudes outwards, and when the roller 27 abuts against the limiting cambered surface 28, the movable blade 5 extends out of the rotary drum 4 through the knife retracting opening 6 (refer to fig. 4) and keeps the extending state until the movable blade 5 contacts with a garbage bag and passes through between two adjacent fixed blades 10; the lower side position of the template 24 is provided with a clearance surface 29, the clearance surface 29 enables the template 24 to be separated from the contact with the roller 27, and simultaneously, the movable blade 5 is recovered into the rotary drum 4 from the receiving opening under the driving of the blade-receiving driving part.

Referring to fig. 5, an inward concave reversing arc surface 30 is arranged on one side of the backup plate 24 away from the stationary knife accommodating shell 14, the connection part of the reversing arc surface 30 and the clearance surface 29 is in arc transition, and the connection part of the reversing arc surface 30 and the limiting arc surface 28 is in arc transition; the roller 27 abuts against the reversing arc 30, and the rotary drum 4 rotates from the reversing arc 30 towards the limiting arc 28, so that the profiling plate 24 can drive the movable blade 5 to extend out of the rotary drum 4 through the knife-retracting edge 6.

The using process is briefly described as follows: firstly, a garbage bag is thrown into a space between the fixed cutter accommodating shell 14 and the rotary drum 4, and the garbage bag stays on the fixed cutter 10 due to the limitation of the fixed cutter 10; meanwhile, the driving motor 37 works, the driving motor 37 drives the rotary drum 4 to rotate in a manner of transmission of the reduction gear set 38 and a belt, and drives the movable blade 5 to rotate towards the fixed blade 10 so as to cut the garbage bag; the rotary drum 4 continues to rotate, when the roller 27 on the movable blade 5 is separated from the abutting joint with the profiling plate 24, the movable blade 5 is collected into the rotary drum 4 under the action of the blade collecting torsion spring 34 and the blade collecting tension spring 31, and garbage wound on the movable blade 5 can be separated, so that the phenomenon that the materials are wound on the movable blade 5 to cause abrasion is avoided.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.