CN220549318U - Packaging machine and packaging bag - Google Patents

Abstract

The utility model discloses a packaging machine and a packaging bag, wherein the packaging machine comprises a shaft assembly, the shaft assembly comprises a first rotating shaft and a second rotating shaft, a cutter part is arranged on the first rotating shaft, a cutting edge abutting part is arranged on the second rotating shaft, the first rotating shaft and the second rotating shaft rotate oppositely, the cutting edge part abuts against the cutting edge abutting part, and an easy-to-tear port is cut at the edge of the packaging bag corresponding to the position of a discharge port. According to the utility model, the cutter part and the blade abutting part are arranged, when the cutter part and the blade abutting part are abutted, the edge of the packaging bag is cut with the easy-tearing opening with the tearing direction passing through the discharge opening, and a customer tears out the discharge opening through the easy-tearing opening, so that the traditional Chinese medicine decoction in the packaging bag can only be discharged from the discharge opening, and the problems that the traditional Chinese medicine decoction packaging bag is easy to spray and overflow when in use, and the customer is inconvenient to drink are solved.

Description

Packaging machine and packaging bag

Technical Field

The utility model belongs to the technical field of packaging machines, and particularly relates to a packaging machine and a packaging bag.

Background

At present, plastic packages are widely applied to various fields, for example, in the field of traditional Chinese medicine, and can be used for packaging medical medicines in various forms such as decoction, paste, granular powder and the like. The packaging equipment widely used in the field of traditional Chinese medicine packaging is generally composed of a bracket, a pair of edge sealing shafts, a pair of sealing shafts, a cutter support shaft, a cutter shaft and the like, wherein the pair of edge sealing shafts, the pair of sealing shafts, the cutter support shaft, the cutter shaft and the like are arranged on the bracket from top to bottom.

For the traditional Chinese medicine decoction, the packaging process is as follows: starting the driving device, starting the edge sealing shaft, the cutter supporting shaft, the cutter shaft and the like to rotate, and synchronously guiding the front bag body and the rear bag body of the packaging bag between the shafts from top to bottom. When passing through the edge sealing shaft, the edge sealing shaft seals the left and right sides of the front bag body and the rear bag body, and forms a bottom opening and a top opening; and then sealing the bottom opening through a sealing shaft, filling and injecting the traditional Chinese medicine decoction through program control after sealing, sealing the top opening through the sealing shaft, and finally cutting off the packaging bag filled with the traditional Chinese medicine decoction and sealed through a cutter supporting shaft and a cutter shaft, thereby finally producing the packaged traditional Chinese medicine decoction which is well sealed and is completely filled with the traditional Chinese medicine decoction, and the traditional Chinese medicine decoction is convenient to store, sell, use and the like.

When the traditional Chinese medicine decoction is packaged, the temperature of the edge sealing shaft and the temperature of the sealing shaft are generally controlled to be below 120 ℃, namely, the traditional Chinese medicine decoction is packaged into a bag at a higher temperature, and the traditional Chinese medicine decoction is filled into the bag, and the packaged medicine bag meets the requirements of a certain pressure resistance value, no leakage and the like, so that the traditional Chinese medicine decoction in the bag is easy to spray and overflow when a customer unpacks the packaging bag for drinking, and inconvenience is brought to the customer for drinking.

The utility model discloses a wrapping bag and packagine machine in the chinese patent of application number 202020436046.9, be provided with the liquid outlet in this wrapping bag, be linked together with the inside of wrapping bag, and set up the edge of tearing in wrapping bag one side that is equipped with the liquid outlet, be used for tearing the wrapping bag, set up like this although make the edge of tearing can tear the liquid outlet, but in the use, the customer can tear from arbitrary direction, the liquid outlet has possibly been avoided, the liquid outlet that makes the setting fail to exert original effect, cause the traditional chinese medicine decoction in the bag to spray and spill over easily, the inconvenient scheduling problem of customer's drinking.

The present utility model has been made in view of this.

Disclosure of Invention

The utility model aims to solve the technical problems of overcoming the defects in the prior art, and providing a packaging machine and a packaging bag, wherein a cutter part and a blade abutting part are correspondingly arranged at the same end of a shaft assembly of the packaging machine, the cutter part and the blade abutting part are abutted in the working process of the shaft assembly, and an easy-to-tear port is cut at the edge of the packaging bag corresponding to the position of a discharge port, so that a customer tears the packaging bag through the easy-to-tear port, and the tearing direction of the easy-to-tear port passes through the discharge port, therefore, the traditional Chinese medicine decoction in the packaging bag can only be discharged from the discharge port, and the problems that the traditional Chinese medicine decoction packaging bag is easy to spray and overflow, is inconvenient for the customer to drink and the like are solved.

In order to solve the technical problems, the utility model adopts the basic conception of the technical scheme that: a packaging machine comprising a shaft assembly, the shaft assembly comprising:

a first rotating shaft provided with a cutter part in the circumferential direction;

a second rotating shaft provided in parallel with the first rotating shaft, and provided with a blade abutting portion in the circumferential direction;

the first rotating shaft and the second rotating shaft rotate in opposite directions, so that the cutter part is abutted with the blade abutting part, and the cutter is used for cutting the edge of the packaging bag to form an easy-to-tear opening.

Further, the first rotation shaft includes:

the first shaft body is arranged at one end of the first rotating shaft and comprises a first arc surface;

the second shaft body is connected with the first shaft body and comprises a second arc surface;

the radius of the shaft body where the first arc surface is located is smaller than the radius of the shaft body where the second arc surface is located;

the cutter part is arranged on the first arc surface, extends towards the inside of the second shaft body in the axial direction of the first rotating shaft, and the cutting edge of the cutter part is exposed out of the second arc surface.

Further, the first rotating shaft further comprises a first plane, and the first plane is arranged on two sides of the first shaft body and the second shaft body and is connected with the edge of the first arc surface and the edge of the second arc surface;

the second arc surface is provided with a first groove, the first groove is arranged at the junction of the second arc surface and the first plane, and a first gap is reserved between the edge of the first groove and the edge of the cutter part.

Further, the position of the cutter portion in the circumferential direction of the first arc surface corresponds to any position of the first groove in the extending length of the second arc surface in the circumferential direction in the axial direction.

Further, the second rotation shaft includes:

the third shaft body is arranged at one end of the second rotating shaft and comprises a third arc surface;

the fourth shaft body is connected with the third shaft body and comprises a fourth arc surface;

the radius of the shaft body where the third arc surface is located is smaller than the radius of the shaft body where the fourth arc surface is located;

the blade abutting part is arranged on the third arc surface, extends towards the inside of the fourth shaft body in the axial direction of the second rotating shaft, and the abutting surface of the blade abutting part is exposed out of the fourth arc surface.

Further, the second rotating shaft further comprises a second plane, and the second plane is arranged on two sides of the third shaft body and the fourth shaft body and is connected with the edge of the third arc surface and the edge of the fourth arc surface;

a second groove is formed in the fourth arc surface, the second groove is formed in the junction of the fourth arc surface and the second plane, and a second gap is formed between the edge of the second groove and the edge of the cutting edge abutting part;

the first gap and the second gap have the same length in the axial direction.

Further, the first rotating shaft and the second rotating shaft rotate oppositely, and the position of the first groove corresponds to the position of the second groove;

the remaining arc surface of the second arc surface except the first groove is abutted with the remaining arc surface of the fourth arc surface except the second groove.

Further, the sum of the distance from the cutting edge of the cutter part to the central axis of the first rotating shaft and the distance from the abutting surface of the cutting edge abutting part to the central axis of the second rotating shaft is equal to the distance from the central axis of the first rotating shaft to the central axis of the second rotating shaft.

The utility model also provides a packaging bag prepared by adopting the packaging machine, which comprises the following components:

the first sealing parts are arranged at the left side and the right side of the packaging bag and are used for sealing the left side and the right side of the packaging bag;

the second sealing parts are arranged on the upper side and the lower side of the packaging bag and are used for sealing the upper side and the lower side of the packaging bag;

the containing cavity is arranged in the middle area of the packaging bag and is used for containing articles;

the discharging hole is arranged on one side of the containing cavity close to the second sealing part and is communicated with the containing cavity, and the discharging hole has an extension length in the up-down direction;

the easy-to-tear opening is arranged on the first sealing part, is arranged at any position of the first sealing part corresponding to the extension length of the discharge opening, and is used for opening the packaging bag along the tearing direction of the easy-to-tear opening through the discharge opening.

Further, a gap is formed between the edge of the easy-to-tear port and the edge of the discharge port, and the gap is sealed.

After the technical scheme is adopted, compared with the prior art, the utility model has the following beneficial effects:

1. according to the packaging machine provided by the utility model, the shaft assembly of the packaging machine comprises the first rotating shaft and the second rotating shaft, and the cutter part and the cutting edge abutting part are correspondingly arranged at the same end of the two shafts, so that the cutter part and the cutting edge abutting part are abutted in the rotating process of the two shafts, and the easily-torn opening is cut at the edge of the packaging bag corresponding to the discharge opening, so that the packaging bag with the easily-torn opening is prepared.

2. The utility model also provides a packaging bag, wherein the edge of the packaging bag is provided with the easy-to-tear opening, the tearing direction of the easy-to-tear opening passes through the discharge opening of the packaging bag, and the four sides of the packaging bag are arranged in a flat-cut manner except the easy-to-tear opening, so that a customer can only tear the discharge opening through the easy-to-tear opening when using the packaging bag, the traditional Chinese medicine decoction in the packaging bag can only be discharged from the discharge opening, and the problems that the traditional Chinese medicine decoction packaging bag is easy to spray and overflow when being used, the customer is inconvenient to drink and the like are solved.

3. The packaging machine disclosed by the utility model has the advantages of simple structure, low manufacturing cost, small operation and maintenance workload, easiness in assembly and better economic benefit and application prospect.

The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort. In the drawings:

fig. 1 is a schematic view of a packing machine according to the embodiment of the present utility model;

FIG. 2 is a schematic view of the first rotating shaft and the cutter portion according to the embodiment of the present utility model;

FIG. 3 is a front view of the first rotating shaft and cutter portion according to the embodiment of the present utility model;

FIG. 4 is a schematic view of a cutter portion according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a second rotary shaft and a blade abutment according to an embodiment of the present utility model;

FIG. 6 is a front view of a second rotary shaft and blade abutment according to the embodiment of the utility model;

FIG. 7 is a schematic view of a blade abutment in accordance with an embodiment of the present utility model;

FIG. 8 is a schematic view of the structure of the cutter saddle shaft according to the embodiment of the present utility model;

FIG. 9 is a schematic view of the structure of a cutter shaft in the embodiment of the present utility model;

FIG. 10 is a schematic view of a socket head cap screw in accordance with the illustrated embodiment of the present utility model;

FIG. 11 is a schematic view showing the structure of a packing bag according to the embodiment of the present utility model;

FIG. 12 is a schematic view showing the structure of the sealing region of the packing bag according to the embodiment of the present utility model.

In the figure: 1. a first rotation shaft; 11. a cutter part; 111. a cutter threaded hole; 112. a cutter body; 113. a blade; 114. a cutter threaded hole groove; 12. a first shaft body; 121. a first arc surface; 13. a second shaft body; 131. a second arc surface; 14. a first plane; 15. a first groove; 16. a cutter groove; 2. a second rotation shaft; 21. a blade abutment portion; 211. an abutment surface; 212. a threaded hole of the abutting part; 213. a connecting threaded hole; 22. a third shaft body; 221. a third arc surface; 23. a fourth shaft body; 231. a fourth arc surface; 24. a second plane; 25. a second groove; 26. an abutment groove; 3. a cutter supporting shaft; 31. an abutment bar; 4. cutting a cutter shaft; 41. a flat cutter; 5. edge sealing shafts; 6. a frame; 7. a driving device; 81. a first sealing part; 82. a second sealing part; 83. a discharge port; 84. an easy-to-tear opening; 85. a cavity; 9. a set screw; 10. a threaded hole;

l1: a first gap; l2: and a second gap.

It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model, and the following embodiments are used to illustrate the present utility model, but are not intended to limit the scope of the present utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In traditional chinese medicine field, adopt plastic packaging bag packing chinese medicine decoction to be the means commonly used in this field, to current wrapping bag, can set up the zigzag at the upper and lower both ends of wrapping bag generally and tear the mouth, but at customer in-service use's in-process, the tearing direction that the zigzag was torn the mouth can be arbitrary direction, even is equipped with sealed discharge gate on the wrapping bag, the customer also is likely to avoid the discharge gate at the in-process of tearing the wrapping bag. The traditional Chinese medicine decoction is usually packaged into a bag at a higher temperature, and the traditional Chinese medicine decoction filled into the bag is full, so that when a customer tears the bag for drinking, the traditional Chinese medicine decoction in the bag is easy to spray and overflow, and inconvenience is brought to the customer for drinking. In order to solve the problem, the utility model designs the packaging machine and the packaging bag, the cutter parts and the blade abutting parts are respectively arranged on the two rotating shafts of the packaging machine shaft assembly, when the two rotating shafts rotate in opposite directions, the cutter parts and the blade abutting parts are abutted, the edge of the packaging bag is cut into easy-to-tear openings, meanwhile, the tooth-shaped cutters in the cutter shafts are changed into flat cutters, the upper side and the lower side of the packaging bag are arranged in a flat cutting way, the easy-to-tear openings are torn out of the discharge opening along the tearing direction, the traditional Chinese medicine decoction in the packaging bag can only be discharged from the discharge opening, and the problems that the traditional Chinese medicine decoction in the packaging bag is easy to spray and overflow and inconvenient to drink when a customer tears the packaging bag are solved. The method comprises the following steps:

as shown in fig. 1 to 10, the present utility model provides a packing machine including: the cutter comprises a shaft assembly, a cutter supporting shaft 3, a cutter shaft 4, an edge sealing shaft 5, a frame 6 and a driving device 7. The shaft assembly comprises a first rotational shaft 1 and a second rotational shaft 2.

The first rotating shaft 1 comprises a first shaft body 12, a second shaft body 13 and a first plane 14, and a first arc surface 121 is arranged on the first shaft body 12 in the circumferential direction; a second arc surface 131 is arranged on the second shaft body 13 in the circumferential direction; the first arc surface 121 is provided with a cutter part 11 and a cutter groove 16, and the cutter part 11 is arranged in the cutter groove 16; the cutter part 11 includes a cutter body 112 and a cutting edge 113, the cutter body 112 of the cutter part 11 extends toward the second shaft body 13, and the cutting edge 113 is exposed from the second arc surface 131; a cutter threaded hole 111 and a cutter threaded hole slot 114 are also formed in one side of the cutter slot 16; the junction between the second arc surface 131 and the first plane 14 is further provided with a first groove 15.

The second rotating shaft 2 comprises a third shaft body 22, a fourth shaft body 23 and a second plane 24, wherein a third arc surface 221 is arranged in the circumferential direction of the third shaft body 22; a fourth arc surface 231 is arranged on the fourth shaft body 23 in the circumferential direction; the third arc surface 221 is provided with a blade abutting portion 21 and an abutting groove 26, and the blade abutting portion 21 is provided in the abutting groove 26; the blade abutment 21 includes an abutment surface 211 and an abutment threaded bore 212; the blade abutting portion 21 extends into the fourth shaft body 23, and the abutting surface 211 is exposed to the fourth arc surface 231; a connection threaded hole 213 is formed in the abutting groove 26; a second groove 25 is further provided at the junction between the fourth arc surface 231 and the second plane 24.

The cutter supporting shaft 3 comprises an abutting strip 31, and a threaded hole 10 is further formed in the cutter supporting shaft 3; the cutter shaft 4 comprises a flat cutter 41, and a set screw 9 is further arranged on the cutter shaft 4; the cutter supporting shaft 3 and the cutter shaft 4 are arranged in parallel and arranged below the shaft assembly, and the edge sealing shaft 5 is arranged at the upper part of the shaft assembly; the shaft assembly, the cutter supporting shaft 3, the cutter shaft 4 and the edge sealing shaft 5 are all arranged on the frame 6 and are connected with the driving device 7.

As shown in fig. 11, the present utility model also provides a packaging bag comprising: the first sealing part 81, the second sealing part 82, the discharge hole 83, the easy-tearing opening 84 and the containing cavity 85. The first sealing parts 81 are arranged at the left side and the right side of the packaging bag, and the second sealing parts 82 are arranged at the upper side and the lower side of the packaging bag; the cavity 85 is disposed in the middle area of the packaging bag, and the first sealing portion 81 and the second sealing portion 82 enclose the cavity 85; the discharge hole 83 is disposed at one side of the cavity 85 near the second sealing portion 82 and is communicated with the cavity 85, and the discharge hole 83 has an extension length in a longitudinal direction toward the inside of the second sealing portion 82; the easy-to-tear opening 84 is provided on the first sealing portion 81, and is arbitrarily provided at a position of the first sealing portion 81 corresponding to the extension length of the discharge opening 83, and the tearing direction of the easy-to-tear opening 84 passes through the discharge opening 83 for opening the package bag.

Preferably, a plurality of discharge ports 83 are provided, and each discharge port 83 is correspondingly provided with at least one easy-to-tear port 84, so as to ensure that each discharge port 83 can be torn by at least one easy-to-tear port 84.

A gap is formed between the edge of the easy-tearing opening 84 and the edge of the discharging opening 83, and the gap is sealed.

Preferably, the length of the gap in the tearing direction of the easy-to-tear opening 84 is not too long or too short, so as to avoid leakage of the packaging bag caused by tearing the packaging bag when the tearing direction of the easy-to-tear opening 84 changes to deviate from the discharge opening 83 or inadvertently touch the easy-to-tear opening 84 during use.

Preferably, the edges of the first sealing portion 81 and the second sealing portion 82 are disposed in a flat cut manner, so as to ensure that the package can only be torn from the easy-to-tear opening 84.

As an embodiment, the present utility model provides a packaging machine comprising a shaft assembly, a knife holder shaft 3, a knife shaft 4, a banding shaft 5, a frame 6 and a drive means 7, as shown in fig. 1 to 10.

The shaft assembly comprises a first rotating shaft 1 and a second rotating shaft 2, as shown in fig. 2 to 3, the first rotating shaft 1 comprises a first shaft body 12, a second shaft body 13 and a first plane 14, the first shaft body 12 comprises a first arc surface 121, the second shaft body 13 is connected with the first shaft body 12, and the second shaft body 13 comprises a second arc surface 131; the first plane 14 is disposed on two sides of the first shaft body 12 and the second shaft body 13, and is connected to the edge of the first arc surface 121 and the edge of the second arc surface 131.

As shown in fig. 2 to 3, a cutter groove 16 is formed from the first arc surface 121 toward the inside of the first shaft body 12, and one end of the cutter groove 16, which is close to the second shaft body 13, extends toward the inside of the second shaft body 13 and is exposed to the second arc surface 131.

A cutter part 11 is arranged in the circumferential direction of the first rotating shaft 1, the cutter part 11 is mounted in the cutter groove 16, as shown in fig. 4, the cutter part 11 comprises a cutter body 112 and a cutting edge 113, and the cutting edge 113 is arranged at the top of the cutter body 112 and is used for cutting out an easy-to-tear opening 84 of the packaging bag; the cutter body 112 is mounted inside the cutter slot 16.

Preferably, one end of the cutter portion 11 is closely attached to one end of the cutter groove 16 located inside the second shaft body 13, so as to ensure that the blade 113 can cut to the edge of the package.

As shown in fig. 2 to 3, a cutter threaded hole 111 and a cutter threaded hole 114 are formed on one side of the cutter slot 16, which is close to the first plane 14, the cutter threaded hole 111 communicates the interior of the cutter slot 16 with the interior of the cutter threaded hole 114, and the cutter threaded hole 114 is formed on the first plane 14; in the cutter threaded hole groove 114, the cutter threaded hole 111 may be screwed with a set screw 9, after the set screw 9 is screwed into the cutter threaded hole 111, one end of the set screw 9 is close to the cutter threaded hole groove 114, the other end is abutted against the cutter body 112, and in the screwing process, the cutter body 112 of the cutter portion 11 is gradually pressed against the other side of the cutter groove 16, so as to fix the cutter portion 11.

Preferably, the distance between the cutting edge 113 of the cutter portion 11 and the central axis of the first rotating shaft 1 is not smaller than the radius of the second shaft body 13 where the second arc surface 131 is located, so as to ensure that the cutting edge 113 can cut the easy-to-tear opening 84.

As shown in fig. 2 to 3, a first groove 15 is formed at the junction between the second arc surface 131 and the first plane 14, the first groove 15 is close to the cutter portion 11, a first gap L1 is formed between the edge of the first groove 15 and the edge of the cutter portion 11, and the length of the first gap L1 in the axial direction is the distance between one side of the first groove 15 close to the first shaft body 12 and one end of the cutter portion 11 close to the second shaft body 13; the first gap L1 is used for sealing between the easy-tearing opening 84 and the discharge opening 83 of the packaging bag.

As shown in fig. 5 to 6, the second rotating shaft 2 includes a third shaft body 22, a fourth shaft body 23 and a second plane 24, the third shaft body 22 includes a third arc surface 221, the fourth shaft body 23 is connected with the third shaft body 22, and the fourth shaft body 23 includes a fourth arc surface 231; the second plane 24 is disposed on two sides of the second rotating shaft 2, and is connected to the edge of the third arc surface 221 and the edge of the fourth arc surface 231.

As shown in fig. 5 to 6, an abutment groove 26 is formed in the third shaft body 22 from the junction between the third arc surface 221 and the second plane 24, and one end of the abutment groove 26, which is close to the fourth shaft body 23, extends into the fourth shaft body 23 and is exposed to the fourth arc surface 231; a connection threaded hole 213 is formed in the abutting groove 26 toward the inside of the first shaft body 12, and one end of the connection threaded hole 213 away from the abutting groove 26 is exposed to the third arc surface 221.

A blade abutting portion 21 is provided in the circumferential direction of the second rotating shaft 2, the blade abutting portion 21 is mounted in the abutting groove 26, as shown in fig. 7, the blade abutting portion 21 includes an abutting surface 211 and an abutting portion screw hole 212, the abutting surface 211 is provided at an upper portion of the blade abutting portion 21 for abutting against an edge of the packaging bag; the abutment screw hole 212 is formed in the middle of the blade abutment 21, the axis of the abutment screw hole coincides with the central axis of the connection screw hole 213, the set screw 9 can be screwed into the abutment screw hole 212, the front end of the set screw 9 can be screwed into the connection screw hole 213, and the rear end of the set screw remains in the abutment screw hole 212. Therefore, when the set screw 9 is completely screwed in, the blade abutment portion 21 is fixed to the second rotation shaft 2.

Preferably, the abutment surface 211 of the blade abutment portion 21 is an outwardly convex arc surface, so as to avoid the abutment surface 211 from scratching the edge of the packaging bag and affecting the normal operation of the packaging machine.

Preferably, one side of the blade abutment portion 21 is closely attached to one end of the abutment groove 26 located inside the fourth shaft body 23, so as to ensure that the blade abutment portion 21 can abut against the edge of the package bag to be cut.

As shown in fig. 5 to 6, a second groove 25 is formed at the junction between the fourth arc surface 231 and the second plane 24, a second gap L2 is formed between the edge of the second groove 25 and the edge of the blade abutting portion 21, and the length of the second gap L2 in the axial direction is the distance between one side of the second groove 25 near the third shaft body 22 and one end of the blade abutting portion 21 near the fourth shaft body 23; the second gap L2 is used for abutting against the first gap L1, so as to seal the gap between the packaging bag easy-tearing opening 84 and the discharge opening 83.

The first gap L1 and the second gap L2 have the same length in the axial direction.

In the process of sealing the packaging bag, the first rotating shaft 1 and the second rotating shaft 2 rotate in opposite directions, and the remaining arc surfaces except the first groove 15 of the second arc surface 131 and the remaining arc surfaces except the second groove 25 of the fourth arc surface 231 are abutted to form a second sealing part 82 of the packaging bag; the position of the first groove 15 corresponds to the position of the second groove 25, that is, the projection of the first groove 15 on the second arc surface 131 overlaps with the projection of the second groove 25 on the fourth arc surface 231, and a discharge hole 83 of the packaging bag is formed in the abutting process.

The remaining arc surface except the first groove 15 on the second arc surface 131 is abutted against the remaining arc surface except the second groove 25 on the fourth arc surface 231, that is, the first gap L1 is abutted against the second gap L2 in the axial length.

The sum of the distance from the cutting edge 113 of the cutter portion 11 to the central axis of the first rotating shaft 1 and the distance from the contact surface 211 of the cutting edge contact portion 21 to the central axis of the second rotating shaft 2 is equal to the distance from the central axis of the first rotating shaft 1 to the central axis of the second rotating shaft 2, so as to ensure that the cutting edge 113 of the cutter portion 11 can contact with the contact surface 211 of the cutting edge contact portion 21 when the first rotating shaft 1 and the second rotating shaft 2 rotate in opposite directions.

As shown in fig. 8, the tool holder shaft 3 is provided with an abutment bar 31, the abutment bar 31 is mounted in a clamping structure of the tool holder shaft 3, one side of the clamping structure is provided with a threaded hole 10, a set screw 9 matched with the threaded hole 10 is screwed into the threaded hole 10, and the front end of the set screw 9 abuts against the abutment bar 31 and is pressed in the clamping structure, so that the abutment bar 31 is clamped and fixed.

As shown in fig. 9, the cutter shaft 4 is provided with a flat cutter 41, the flat cutter 41 is mounted in a clamping structure of the cutter shaft 4, one side of the clamping structure is provided with a threaded hole 10, a set screw 9 matched with the threaded hole 10 is screwed into the threaded hole 10, and the front end of the set screw 9 abuts against the flat cutter 41 and is pressed in the clamping structure, so that the flat cutter 41 is clamped and fixed.

When the cutter supporting shaft 3 and the cutter shaft 4 work, the abutting strip 31 abuts against the flat cutter 41, and the sealing area of the packaging bag which is sealed by the shaft assembly and is connected up and down is cut off, so that a packaging bag finished product which can be used independently and is filled with traditional Chinese medicine decoction is produced.

As shown in fig. 10, the set screw 9 is preferably a hexagon socket set screw, because such a set screw can be completely screwed into the threaded hole 10 without taking up excessive space, and the space of the installation position of the set screw 9 in the packing machine is small, so that the operation is more convenient by adopting a hexagon spanner matched with the set screw.

In the above scheme, when the first rotating shaft 1 and the second rotating shaft 2 work, the second arc surface 131 is abutted against the fourth arc surface 231, the arc length of the second arc surface 131 on the circumference of the second shaft body 13 is equal to the arc length of the fourth arc surface 231 on the circumference of the fourth shaft body 23, and the arc lengths are all C; as shown in fig. 12, after the second arc surface 131 abuts against the fourth arc surface 231, a sealing area with a width of C is formed, wherein the sealing area with a width of a is the second sealing portion 82 of the packaging bag, and the sealing area with a width of B is the second sealing portion 82 of the next packaging bag; when the flat cutter 41 of the cutter shaft 4 is abutted against the abutment bar 31 of the cutter supporting shaft 3, the flat cutter 41 cuts the sealing region with the width C between the two packaging bags which are vertically connected.

The extension length of the first groove 15 on the circumference of the second shaft body 13 is equal to the extension length of the second groove 25 on the circumference of the fourth shaft body 23, and the extension lengths are all D; when the second arc surface 131 abuts against the fourth arc surface 231, a discharge port with a longitudinal length D is left on the package bag as shown in fig. 12.

In the scheme, the working principle of the packaging machine is as follows: the raw materials of the packaging bag sequentially pass through the edge sealing shaft 5, the shaft assembly, the cutter supporting shaft 3 and the cutter shaft 4 from top to bottom. When passing through the edge sealing shaft 5, the edge sealing shaft 5 seals two sides of the packaging bag to form a first sealing part 81; when passing through the shaft assembly, the second arc surface 131 of the first rotating shaft 1 is abutted against the fourth arc surface 231 of the second rotating shaft 2 to form a second sealing part 82 below the packaging bag, after the packaging bag is filled with the packaged material, the second arc surface 131 of the first rotating shaft 1 is abutted against the fourth arc surface 231 of the second rotating shaft 2 again to form a second sealing part 82 above the packaging bag and a second sealing part 82 below the next packaging bag, meanwhile, the cutter part 11 is abutted against the cutting edge abutting part 21 to form an easy-tearing opening 84, and in addition, the projection of the first groove 15 on the second arc surface 131 is abutted against the projection of the second groove 25 on the fourth arc surface 231 to form a discharge opening 83; when passing through the cutter supporting shaft 3 and the cutter shaft 4, the abutting strip 31 abuts against the flat cutter 41, and cuts off the packaging bag sealing areas which are connected up and down, so as to produce a packaging bag finished product.

The foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited to the above-mentioned embodiment, but is not limited to the above-mentioned embodiment, and any simple modification, equivalent change and modification made by the technical matter of the present utility model can be further combined or replaced by the equivalent embodiment without departing from the scope of the technical solution of the present utility model.

Claims (10)

1. A packaging machine comprising a shaft assembly, the shaft assembly comprising:

a first rotating shaft (1) provided with a cutter section (11) in the circumferential direction;

a second rotating shaft (2) which is provided in parallel with the first rotating shaft (1) and which is provided with a blade contact portion (21) in the circumferential direction;

the first rotating shaft (1) and the second rotating shaft (2) rotate in opposite directions, so that the cutter part (11) is abutted with the blade abutting part (21) and is used for cutting the edge of the packaging bag to form an easy-tearing opening (84).

2. A packaging machine according to claim 1, characterized in that said first rotation shaft (1) comprises:

the first shaft body (12) is arranged at one end of the first rotating shaft (1) and comprises a first arc surface (121);

the second shaft body (13) is connected with the first shaft body (12) and comprises a second arc surface (131);

the radius of the shaft body where the first arc surface (121) is located is smaller than the radius of the shaft body where the second arc surface (131) is located;

the cutter part (11) is arranged on the first arc surface (121), extends towards the inside of the second shaft body (13) in the axial direction of the first rotating shaft (1), and the cutting edge (113) of the cutter part (11) is exposed out of the second arc surface (131).

3. A packaging machine according to claim 2, wherein the first rotation shaft (1) further comprises a first plane (14), the first plane (14) being provided on both sides of the first shaft body (12) and the second shaft body (13) and being connected to the edges of the first arc surface (121) and the edges of the second arc surface (131);

the cutting tool is characterized in that a first groove (15) is formed in the second arc surface (131), the first groove (15) is formed in the junction of the second arc surface (131) and the first plane (14), and a first gap L1 is formed between the edge of the first groove (15) and the edge of the cutter part (11).

4. A packaging machine according to claim 3, wherein the position of the cutter portion (11) in the circumferential direction of the first circular arc surface (121) corresponds to any position of the first groove (15) in the axial direction of the extension length of the second circular arc surface (131).

5. A packaging machine according to claim 3, characterized in that said second rotation shaft (2) comprises:

the third shaft body (22) is arranged at one end of the second rotating shaft (2) and comprises a third arc surface (221);

a fourth shaft body (23) connected with the third shaft body (22) and comprising a fourth arc surface (231);

the radius of the shaft body where the third arc surface (221) is located is smaller than the radius of the shaft body where the fourth arc surface (231) is located;

the blade contact portion (21) is provided on the third arc surface (221), extends in the axial direction of the second rotating shaft (2) toward the inside of the fourth shaft body (23), and the contact surface (211) of the blade contact portion (21) is exposed to the fourth arc surface (231).

6. A packaging machine according to claim 5, wherein said second rotation axis (2) further comprises a second plane (24), said second plane (24) being provided on both sides of said third axis (22) and said fourth axis (23), connected to the edges of said third arc surface (221) and said fourth arc surface (231);

a second groove (25) is formed in the fourth arc surface (231), the second groove (25) is formed in the junction of the fourth arc surface (231) and the second plane (24), and a second gap L2 is formed between the edge of the second groove (25) and the edge of the cutting edge abutting part (21);

the first gap L1 and the second gap L2 have the same length in the axial direction.

7. A packaging machine according to claim 6, wherein said first rotation axis (1) and said second rotation axis (2) rotate towards each other, the position of said first recess (15) corresponding to the position of said second recess (25);

the remaining arc surface of the second arc surface (131) except for the first groove (15) is abutted against the remaining arc surface of the fourth arc surface (231) except for the second groove (25).

8. A packaging machine according to any one of claims 1-7, characterized in that the sum of the distance of the cutting edge (113) of the cutter portion (11) to the centre axis of the first rotation shaft (1) and the distance of the abutment surface (211) of the cutting edge abutment portion (21) to the centre axis of the second rotation shaft (2) is equal to the distance of the centre axis of the first rotation shaft (1) to the centre axis of the second rotation shaft (2).

9. A packaging bag produced by a packaging machine according to any one of claims 1 to 8, said packaging bag comprising:

first sealing parts (81) arranged at the left and right sides of the packaging bag and used for sealing the left and right sides of the packaging bag;

second sealing parts (82) arranged on the upper side and the lower side of the packaging bag and used for sealing the upper side and the lower side of the packaging bag;

a containing cavity (85) arranged in the middle area of the packaging bag and used for containing articles;

a discharge hole (83) arranged on one side of the containing cavity (85) close to the second sealing part (82) and communicated with the containing cavity (85), wherein the discharge hole (83) has an extension length in the up-down direction;

the easy-to-tear opening (84) is arranged on the first sealing part (81), the position of the first sealing part (81) corresponding to the extension length of the discharge opening (83) is randomly arranged, and the tearing direction of the easy-to-tear opening (84) passes through the discharge opening (83) and is used for opening the packaging bag.

10. A packaging bag according to claim 9, wherein a gap is provided between the edge of the tear-off spout (84) and the edge of the spout (83), said gap being sealed.