阅读说明：本技术 一种具有废边分切功能的膜切机构 (Film cutting mechanism with slitter edge slitting function ) 是由 邹彤 陈茉莉 于 2021-09-01 设计创作，主要内容包括：本发明公开了一种具有废边分切功能的膜切机构,属于膜切设备领域,通过带有筒形切刀、复位弹簧、卸料弹簧、卸料推板的分切机构与带有旋转环、偏心柱的环形护板的结构设计,在使用时,通过驱动电机驱动旋转环按四十五度角依次旋转,在偏心柱的挤压和复位弹簧、卸料弹簧的配合下,可实现自动上料、废边分切、废边料、成品料分装功能,具有多工位循环作业功能,工作效率高,具有市场前景,适合推广。(The invention discloses a film cutting mechanism with a slitter edge cutting function, which belongs to the field of film cutting equipment, and is characterized in that through the structural design of a cutting mechanism with a cylindrical cutter, a reset spring, a discharging spring and a discharging push plate and an annular guard plate with a rotating ring and an eccentric column, when the film cutting mechanism is used, the rotating ring is driven by a driving motor to rotate in sequence at an angle of forty-five degrees, and under the extrusion of the eccentric column and the matching of the reset spring and the discharging spring, the functions of automatic feeding, slitter edge cutting, slitter edge material and finished product material split charging can be realized.)

1. The utility model provides a mechanism is cut to membrane with function is cut to slitter edge, is including fixing annular backplate (4) on frame (1), be equipped with rotatory ring (3), eccentric column (5) and cut mechanism (6) in annular backplate (4), its characterized in that: the section of the annular guard plate (4) is of an L-shaped structure, the rotary ring (3) and the annular guard plate (4) are arranged concentrically, a bearing (32) is arranged at the bottom of the rotary ring (3), a bearing seat (45) matched with the bearing (32) is arranged at the bottom of the annular guard plate (4), the eccentric column (5) is fixed in the annular guard plate (4) through a support frame (47), four cutting mechanisms (6) are equally angularly and uniformly arranged on the rotary ring (3), each cutting mechanism (6) comprises a cylindrical cutter (61), the cylindrical cutter (61) is slidably connected onto the rotary ring (3) through a sliding groove (33), a reset spring (62) is clamped between the cylindrical cutter (61) and the sliding groove (33), a discharging push plate (64) is arranged in the cylindrical cutter (61), and a discharging spring (63) is clamped between the discharging push plate (64) and the cylindrical cutter (61), equally divide equally to divide by angles such as the outer wall of rotatory ring (3) and be fixed with four and cut frame (35), it is equipped with on frame (35) with spout (33) assorted first discharge opening (351), frame (1) one side is fixed with feed chute (7), be equipped with on annular backplate (4) with feed chute (7) assorted pan feeding mouth (44), one side that feed chute (7) were kept away from in annular backplate (4) is equipped with finished product groove (41), be equipped with on finished product groove (41) with first discharge opening (351) assorted second discharge opening (42), frame (1) bottom one side is fixed with useless limit groove (43), be equipped with on annular backplate (4) with useless limit groove (43) assorted useless limit groove (46), be equipped with the rotatory drive arrangement of rotatory ring (3) of drive on frame (1).

2. The film cutting mechanism with slitter edge slitting function according to claim 1, characterized in that: the driving device is a driving motor (2), the driving motor (2) is fixed to the top of the rack (1), a driving gear (21) is fixed to the output end of the driving motor (2), a driven gear (31) meshed with the driving gear (21) is arranged on the top of the rotating ring (3), and the driving motor (2) is a stepping motor.

3. The film cutting mechanism with slitter edge slitting function according to claim 1, characterized in that: the outer wall of cylindric cutter (61) is equipped with guide way (65), be equipped with in spout (33) with guide way (65) assorted guide block (34).

4. The film cutting mechanism with slitter edge slitting function according to claim 3, characterized in that: the guide groove (65) is of a thread groove (611) structure, the guide block (34) is of a spherical structure matched with the thread groove (611), and a serrated knife edge (612) is arranged at the end of the cylindrical cutter (61).

5. The film cutting mechanism with slitter edge slitting function according to claim 1, characterized in that: the outer wall of the eccentric column (5) is tangent to the inner wall of the rotating ring (3), the tangent point of the eccentric column (5) and the rotating ring (3) is arranged on one side of the finished product groove (41), one side, far away from the slitting frame (35), of the cylindrical cutter (61) is provided with a spherical contact end (613), and the spherical contact end (613) on one side of the finished product groove (41) is tangent to the outer wall of the eccentric column (5).

6. The film cutting mechanism with slitter edge slitting function according to claim 1, characterized in that: the section profiles of the slitting frame (35), the feeding groove (7) and the feeding port (44) are the same and are matched with the profile of the packaging cover film blank.

7. The film cutting mechanism with slitter edge slitting function according to claim 1, characterized in that: cut one side that frame (35) is close to annular backplate (4) and be the arc structure, the arc structure equals with the inner wall diameter of annular backplate (4), the L type inner bottom of annular backplate (4) and the bottom clearance of cutting frame (35) are less than the thickness of packing epiphragma woollen, the inner wall coating of annular backplate (4) is equipped with the wear-resisting coating of nanometer.

8. The film cutting mechanism with slitter edge slitting function according to claim 1, characterized in that: the top of feed tank (7) is equipped with observation groove (71), feed tank (7) intussuseption is filled with the packing epiphragma woollen that the multiunit stack set up, and the vertical setting in every group packing epiphragma woollen plane and every group packing epiphragma woollen plane are mutually perpendicular with the axis of cylindric cutter (61).

9. The film cutting mechanism with slitter edge slitting function according to claim 1, characterized in that: reset spring (62) are high strength antifatigue spring, reset spring (62) have the elasticity of driving cylindric cutter (61) and being close to eccentric post (5), spout (33), cut frame (35) equal and equal to the half of cylindric cutter (61) length in the length of cylindric cutter (61) axis direction, reset spring (62) are under free state, the cutter port of cylindric cutter (61) is close to the port parallel and level of cutting frame (35) with spout (33).

10. The film cutting mechanism with slitter edge slitting function according to claim 1, characterized in that: the discharging spring (63) is a high-strength anti-fatigue spring, the discharging spring (63) has elasticity for driving the discharging push plate (64) to be away from the eccentric column (5), the discharging spring (63) is in a free state, and the end face of the discharging push plate (64) is flush with the cutter port of the cylindrical cutter (61).

Technical Field

The invention relates to the field of film cutting equipment, in particular to a film cutting mechanism with a slitter edge slitting function.

Background

Film cutting is a process used to ring cut a package lidding film to obtain a package lidding. At present, for small-batch film cutting, a push-type film cutting machine is generally used for realizing the film cutting, a large-size packaging cover film is firstly divided into a plurality of small-size packaging cover films, each small-size packaging cover film comprises a packaging cover, then the plurality of small-size packaging cover films are sequentially arranged in a bearing groove of the push-type film cutting machine, and the plurality of packaging cover films are pushed into an annular cutter through a power cylinder to realize the circular cutting of the packaging covers.

However, after the packaging cover film is subjected to circular cutting, the waste edge on the periphery of the packaging cover film still forms an integral ring shape, and the annular cutter needs to be fixed through the base and the installation rod, so one end of the installation rod must be abutted against the cutter, and the whole waste edge after circular cutting cannot be smoothly output under the blocking of the installation rod and is completely accumulated and wound on the periphery of the cutter, so that the subsequent production processes are greatly influenced, the existing film cutting mechanism mostly runs in a single work position, the automation degree is low, the film cutting efficiency is poor, and therefore the film cutting mechanism with the waste edge cutting function is provided for solving the problems.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a film cutting mechanism with a slitter edge slitting function, and compared with the existing film cutting mechanism, the film cutting mechanism has the advantages of high automation degree, capability of realizing automatic feeding, slitter edge slitting, slitter edge and finished product subpackaging functions, multi-station circulating operation function, high working efficiency, market prospect and suitability for popularization.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A film cutting mechanism with a slitter edge cutting function comprises an annular guard plate fixed on a machine frame, wherein a rotating ring, an eccentric column and a cutting mechanism are arranged in the annular guard plate, the section of the annular guard plate is of an L-shaped structure, the rotating ring and the annular guard plate are arranged concentrically, a bearing is arranged at the bottom of the rotating ring, a bearing seat matched with the bearing is arranged at the bottom of the annular guard plate, the eccentric column is fixed in the annular guard plate through a support frame, four cutting mechanisms are equally angularly and equally distributed on the rotating ring, the cutting mechanism comprises a cylindrical cutter, the cylindrical cutter is slidably connected on the rotating ring through a chute, a reset spring is clamped between the cylindrical cutter and the chute, an unloading push plate is arranged in the cylindrical cutter, an unloading spring is clamped between the unloading push plate and the cylindrical cutter, four cutting frames are equally and fixedly arranged on the outer wall of the cylindrical cutter, the cutting frame is provided with a first discharging hole matched with the sliding groove, a feeding groove is fixed on one side of the frame, a feeding hole matched with the feeding groove is formed in the annular protective plate, a finished product groove is formed in one side, away from the feeding groove, of the annular protective plate, a second discharging hole matched with the first discharging hole is formed in the finished product groove, a waste edge groove is fixed on one side of the bottom of the frame, a waste edge groove matched with the waste edge groove is formed in the annular protective plate, and a driving device for driving the rotating ring to rotate is arranged on the frame; the scheme adopts the structural design of the slitting mechanism with the cylindrical cutter, the reset spring, the discharging spring and the discharging push plate and the annular guard plate with the rotating ring and the eccentric column, when the slitting mechanism is rotated to the bottom of the feeding trough, the cylindrical cutter is not extruded by the eccentric column, the cylindrical cutter is reset into the chute under the action of the reset spring, the multilayer packaging cover film blanks stacked in the feeding trough fall into the slitting frame through the feeding hole under the influence of gravity, the driving motor drives the rotating ring to rotate at the angle of forty-five degrees again at the moment, the cylindrical cutter is gradually extruded by the eccentric column in the rotating process, the elasticity of the reset spring is overcome, the circular cutting operation is carried out on the packaging cover film blanks in the slitting frame, when the slitting frame rotates to the position of a finished product trough, the cylindrical cutter is extruded by the eccentric column to reach the maximum displacement, the ring cutting operation is completed, the cut multilayer finished product packaging cover gradually extrudes the discharging push plate to enable the discharging spring to contract and store energy, the first discharging hole and the second discharging hole are communicated, the elastic potential energy of the discharging spring is released, the finished product packaging cover contained in the cylindrical cutter is pushed to the finished product groove under the action of the discharging spring and the discharging push plate, the scrap is sleeved on the cylindrical cutter, the cutting frame continues to rotate at an angle of forty-five degrees, the cylindrical cutter gradually breaks away from the extrusion of the eccentric column, the finished product packaging cover gradually retracts into the chute under the action of the return spring, the scrap sleeved on the return spring gradually falls off in the retracting process and falls into the scrap groove through the scrap groove to perform the next cycle operation, the invention has high automation degree, can realize the functions of automatic feeding, scrap cutting, scrap edge cutting and finished product subpackaging, and has the function of multi-station cycle operation, high working efficiency, market prospect and suitability for popularization.

Furthermore, the outer wall of the cylindrical cutter is provided with a guide groove, and a guide block matched with the guide groove is arranged in the slide groove; through the structural design of guide way and guide block, can restrict the displacement distance of cylindric cutter, prevent that cylindric cutter displacement is too big and drop, promoted the structural stability when moving.

Furthermore, the guide groove is of a thread groove structure, the guide block is of a spherical structure matched with the thread groove, and a serrated knife edge is arranged at the end part of the cylindrical cutter; through the structural design of the guide groove of the thread groove structure and the sawtooth knife edge, the cylindrical cutter can rotate when being extruded and displaced by the eccentric column, and then the sawtooth knife edge is driven to screw in and annularly cut packaging cover film blanks, and the annular cutting efficiency is improved.

Furthermore, the outer wall of the eccentric column is arranged in a tangent mode with the inner wall of the rotating ring, the tangent point of the eccentric column and the rotating ring is arranged on one side of the finished product groove, one side, away from the slitting frame, of the cylindrical cutter is provided with a spherical contact end, and the spherical contact end on one side of the finished product groove is arranged in a tangent mode with the outer wall of the eccentric column; through with eccentric post and rotatory tangent setting of circle to set up the sphere contact jaw at the tip of cylindric cutter, make rotatory circle when rotatory, more smooth and easy when eccentric post extrusion cylindric cutter, difficult emergence card pause phenomenon has effectively promoted the stability of structure operation, further promotes life.

Furthermore, the section profiles of the slitting frame, the feeding groove and the feeding port are the same and are matched with the outer profile of the packaging cover film blank; through the section profile structural design who cuts frame, feed tank, pan feeding mouth with packaging mulch film blank outline assorted, make packaging mulch film blank fall into the pan feeding mouth from the feed tank, cut the frame more smoothly, avoid the pan feeding to block, effectively promote the stability of structure operation.

Furthermore, one side of the slitting frame, which is close to the annular guard plate, is of an arc-shaped structure, the diameter of the arc-shaped structure is equal to that of the inner wall of the annular guard plate, the gap between the L-shaped inner bottom of the annular guard plate and the bottom of the slitting frame is smaller than the thickness of the packaging cover film blank, and the inner wall of the annular guard plate is coated with a nano wear-resistant coating; through the L type inner bottom of annular backplate and the bottom clearance of cutting the frame be less than the structural design of packing epiphragma coarse fodder thickness, rotatory ring when rotatory relatively with annular backplate, cut the difficult card of frame bottom and go into packing epiphragma coarse fodder, avoid the clearance to block, effectively promote the stability of structure operation, the inner wall setting of the annular backplate through nanometer wear-resistant coating, further reduce the frictional force of packing epiphragma coarse fodder and annular backplate, the wearability has been promoted simultaneously, effectively increased life.

Further, reset spring is high strength antifatigue spring, reset spring has the elasticity of ordering about the cylindric cutter to be close to eccentric post, spout, cut the frame equal and equal to the half of cylindric cutter length in the length of cylindric cutter axis direction, reset spring is under free state, the cutter port of cylindric cutter is close to the port parallel and level of cutting the frame with the spout. Through the structural design that spout, cut the frame and equal to the half of cylindric cutter length in the length of cylindric cutter axis direction, make the cylindric cutter can realize extending completely cutting, the state of retracting completely at specific angle, promoted the completeness of cutting, avoided the slitter edge material to cup joint and can't drop on the cylindric cutter, further promote the stability of structure operation.

Further, the spring of unloading is high strength antifatigue spring, the spring of unloading has the elasticity of ordering about the push pedal of unloading and keeping away from the eccentric post, the spring of unloading is under free state, the push pedal terminal surface of unloading is parallel and level with the cutter port of cylindric cutter. Through the elasticity setting of the spring of unloading, the push pedal of messenger's unloading can push away completely the finished product packing lid of accomodating in the cylindric cutter and leave, has promoted the material returned thoroughness, avoids finished product packing lid to pile up in the cylindric cutter and influences subsequent circulation operation, further promotes the stability of structure operation.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) the scheme adopts the structural design of the slitting mechanism with the cylindrical cutter, the reset spring, the discharging spring and the discharging push plate and the annular guard plate with the rotating ring and the eccentric column, when the slitting mechanism is rotated to the bottom of the feeding trough, the cylindrical cutter is not extruded by the eccentric column, the cylindrical cutter is reset into the chute under the action of the reset spring, the multilayer packaging cover film blanks stacked in the feeding trough fall into the slitting frame through the feeding hole under the influence of gravity, the driving motor drives the rotating ring to rotate at the angle of forty-five degrees again at the moment, the cylindrical cutter is gradually extruded by the eccentric column in the rotating process, the elasticity of the reset spring is overcome, the circular cutting operation is carried out on the packaging cover film blanks in the slitting frame, when the slitting frame rotates to the position of a finished product trough, the cylindrical cutter is extruded by the eccentric column to reach the maximum displacement, the ring cutting operation is completed, the cut multilayer finished product packaging cover gradually extrudes the discharging push plate to enable the discharging spring to contract and store energy, the first discharging hole and the second discharging hole are communicated, the elastic potential energy of the discharging spring is released, the finished product packaging cover contained in the cylindrical cutter is pushed to the finished product groove under the action of the discharging spring and the discharging push plate, the scrap is sleeved on the cylindrical cutter, the cutting frame continues to rotate at an angle of forty-five degrees, the cylindrical cutter gradually breaks away from the extrusion of the eccentric column, the finished product packaging cover gradually retracts into the chute under the action of the return spring, the scrap sleeved on the return spring gradually falls off in the retracting process and falls into the scrap groove through the scrap groove to perform the next cycle operation, the invention has high automation degree, can realize the functions of automatic feeding, scrap cutting, scrap edge cutting and finished product subpackaging, and has the function of multi-station cycle operation, high working efficiency, market prospect and suitability for popularization.

(2) Through with eccentric post and rotatory tangent setting of circle to set up the sphere contact jaw at the tip of cylindric cutter, make rotatory circle when rotatory, more smooth and easy when eccentric post extrusion cylindric cutter, difficult emergence card pause phenomenon has effectively promoted the stability of structure operation, further promotes life. Through the section profile structural design who cuts frame, feed tank, pan feeding mouth with packaging mulch film blank outline assorted, make packaging mulch film blank fall into the pan feeding mouth from the feed tank, cut the frame more smoothly, avoid the pan feeding to block, effectively promote the stability of structure operation. Through the L type inner bottom of annular backplate and the bottom clearance of cutting the frame be less than the structural design of packing epiphragma coarse fodder thickness, rotatory ring when rotatory relatively with annular backplate, cut the difficult card of frame bottom and go into packing epiphragma coarse fodder, avoid the clearance to block, effectively promote the stability of structure operation, the inner wall setting of the annular backplate through nanometer wear-resistant coating, further reduce the frictional force of packing epiphragma coarse fodder and annular backplate, the wearability has been promoted simultaneously, effectively increased life.

(3) Through the structural design that spout, cut the frame and equal to the half of cylindric cutter length in the length of cylindric cutter axis direction, make the cylindric cutter can realize extending completely cutting, the state of retracting completely at specific angle, promoted the completeness of cutting, avoided the slitter edge material to cup joint and can't drop on the cylindric cutter, further promote the stability of structure operation. Through the elasticity setting of the spring of unloading, the push pedal of messenger's unloading can push away completely the finished product packing lid of accomodating in the cylindric cutter and leave, has promoted the material returned thoroughness, avoids finished product packing lid to pile up in the cylindric cutter and influences subsequent circulation operation, further promotes the stability of structure operation.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a side view of the present invention;

FIG. 3 is a cross-sectional view of the present invention;

FIG. 4 is an enlarged view of portion A of FIG. 3;

FIG. 5 is a schematic view of the structure of the annular shield and the waste edge groove proposed in the present invention;

FIG. 6 is a schematic bottom structure view of the annular fender proposed in the present invention;

FIG. 7 is an exploded view of the rotating ring and slitting mechanism of the present invention;

FIG. 8 is a schematic view of the bottom structure of the rotating ring of the present invention;

fig. 9 is a schematic structural view of a spherical contact end proposed in the present invention;

fig. 10 is a schematic view of a structure of a thread groove proposed in the present invention.

The reference numbers in the figures illustrate:

the automatic cutting machine comprises a frame 1, a driving motor 2, a driving gear 21, a rotating ring 3, a driven gear 31, a bearing 32, a chute 33, a guide block 34, a slitting frame 35, a first discharging hole 351, an annular guard plate 4, a finished product groove 41, a second discharging hole 42, a slitter edge groove 43, a feeding hole 44, a bearing seat 45, a slitter edge groove 46, a supporting frame 47, an eccentric column 5, a slitting mechanism 6, a cylindrical cutter 61, a thread groove 611, a serrated knife edge 612, a spherical contact end 613, a return spring 62, a discharging spring 63, a discharging push plate 64, a guide groove 65, a feeding groove 7 and an observation groove 71.

Detailed Description

In this embodiment 1, the technical solution will be clearly and completely described in conjunction with the disclosed drawings, so that the purpose, technical solution and beneficial effects of the embodiments of the present disclosure will be more clear. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" and similar words are intended to mean that the elements or items listed before the word cover the elements or items listed after the word and their equivalents, without excluding other elements or items. "upper", "lower", "inside", "outside", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

Example (b):

referring to fig. 1-8, the ring-shaped guard plate 4 in fig. 1 is fixed on the frame 1, the rotating ring 3, the eccentric column 5 and the splitting mechanism 6 are arranged in the ring-shaped guard plate 4, the present solution is designed by the splitting mechanism 6 with the cylindrical cutter 61, the return spring 62, the discharging spring 63 and the discharging push plate 64 and the ring-shaped guard plate 4 with the rotating ring 3 and the eccentric column 5, when in use, the rotating ring 3 is driven to rotate at a forty-five degree angle by the driving motor 2, when the splitting mechanism 6 rotates to the bottom of the feeding chute 7, the cylindrical cutter 61 is not extruded by the eccentric column 5, the cylindrical cutter 61 is returned to the chute 33 under the action of the return spring 62, at this time, the multilayer packaging cover film blanks stacked in the feeding chute 7 fall into the splitting frame 35 through the feeding port 44 under the influence of gravity, at this time, the driving motor 2 drives the rotating ring 3 to rotate at a forty-five degree angle again, during the rotation process, the cylindrical cutter 61 is gradually extruded by the eccentric column 5, the elasticity of the reset spring 62 is overcome, circular cutting operation is carried out on the packaging cover film blanks in the cutting frame 35, when the cutting frame 35 rotates to the finished product groove 41, the cylindrical cutter 61 is extruded by the eccentric column 5 to reach the maximum displacement, the circular cutting operation is completed at the moment, the cut multilayer finished product packaging covers gradually extrude the discharging push plate 64 to enable the discharging spring 63 to contract and store energy, at the moment, the first discharging hole 351 and the second discharging hole 42 are communicated, the elastic potential energy of the discharging spring 63 is released, the finished product packaging covers contained in the cylindrical cutter 61 are pushed to the finished product groove 41 under the action of the discharging spring 63 and the discharging push plate 64, waste edge materials are sleeved on the cylindrical cutter 61, at the moment, the cutting frame 35 continues to rotate at an angle of forty-five degrees, the cylindrical cutter 61 gradually breaks away from the extrusion of the eccentric column 5 and gradually retracts to the chute 33 under the action of the reset spring 62, in the retraction process, the scrap edge sleeved on the reset spring 62 gradually falls off and falls into the scrap edge groove 43 through the scrap edge groove 46 to perform the next cycle operation.

Referring to fig. 4 and 9, in fig. 4, the outer wall of the cylindrical cutter 61 is provided with a guide groove 65, the sliding groove 33 is internally provided with the guide block 34, and the structural design of the guide groove 65 and the guide block 34 can limit the displacement distance of the cylindrical cutter 61, prevent the cylindrical cutter 61 from falling off due to too large displacement, and improve the structural stability during operation.

Referring to fig. 10, the guide groove 65 and the serrated knife edge 612 of the thread groove 611 structure in fig. 10 are designed to rotate when the cylindrical cutter 61 is pressed and displaced by the eccentric column 5, so as to drive the serrated knife edge 612 to screw into the blank of the circular cutting packaging cover film, thereby improving the circular cutting efficiency.

Referring to fig. 2 and 9, in fig. 2, the eccentric column 5 is arranged in a tangent manner with the rotating ring 3, and the spherical contact end 613 is arranged at the end of the cylindrical cutter 61, so that when the rotating ring 3 rotates, the eccentric column 5 presses the cylindrical cutter 61 more smoothly, the seizure phenomenon is not easy to occur, the stability of the structure operation is effectively improved, and the service life is further prolonged.

Referring to fig. 3, in fig. 3, the sectional profile structural design of the slitting frame 35, the feeding groove 7 and the feeding port 44, which is matched with the outer profile of the packaging cover film blank, makes the packaging cover film blank fall into the feeding port 44 from the feeding groove 7 and the slitting frame 35 smoother, avoids feeding blockage, and effectively improves the structural operation stability.

Please refer to fig. 4, the bottom gap between the L-shaped inner bottom of the annular guard plate 4 and the slitting frame 35 in fig. 4 is smaller than the thickness of the packaging cover film blanks, when the rotating ring 3 rotates relatively to the annular guard plate 4, the bottom of the slitting frame 35 is not easy to be clamped into the packaging cover film blanks, thereby avoiding the gap blockage, effectively improving the stability of the structure operation, the inner wall of the annular guard plate 4 through the nano wear-resistant coating is arranged, further reducing the friction between the packaging cover film blanks and the annular guard plate 4, and simultaneously improving the wear resistance, and effectively prolonging the service life.

Referring to fig. 1, the arrangement of the observation groove 71 in fig. 1 can effectively remind a user of the storage condition of the material, so that the material is added in time, and the convenience in use is improved.

Referring to fig. 4, in fig. 4, through the structural design that the lengths of the chute 33 and the slitting frame 35 in the axial direction of the cylindrical cutter 61 are equal to one-half of the length of the cylindrical cutter 61, the cylindrical cutter 61 can realize a fully extended cutting state and a fully retracted state at a specific angle, so that the cutting completeness is improved, the waste edge materials are prevented from being sleeved on the cylindrical cutter 61 and cannot fall off, and the structural operation stability is further improved.

Referring to fig. 4, in fig. 4, the discharging push plate 64 can completely push away the finished product packaging covers stored in the cylindrical cutter 61 through the elastic force of the discharging spring 63, so that the material returning thoroughness is improved, the finished product packaging covers are prevented from being accumulated in the cylindrical cutter 61 to influence subsequent cycle operation, and the stability of the structure operation is further improved.

The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.