CN112535193A - Casing shrinkage casing knotting and tail sealing mechanism - Google Patents

Abstract

The invention discloses a casing shrinkage knotting and tail sealing mechanism, which enables a casing shrinkage rod to move towards the direction close to a knotting head structure or enables the knotting head structure to move towards the direction close to the casing shrinkage rod when an expansion free end of the casing shrinkage rod is clamped by a clamping structure to be knotted in a rotating way around the knotting head structure, so that a casing knot which is knotted is close to the end part of the casing shrinkage rod, and the action process of the mechanism is simple and labor-saving; when the sausage casing is knotted, the sausage casing knot moves to be close to the end part of the casing sleeving and shrinking rod, so that the length of the reserved sausage casing material for knotting can be reduced, and the production cost of the sausage casing is saved; the whole casing shrinkage casing knotting and tail sealing mechanism is reasonable in structure setting, simple and compact in equipment structure, smooth in knotting action connection and capable of meeting use requirements.

Description

Casing shrinkage casing knotting and tail sealing mechanism

Technical Field

The invention relates to casing production equipment, in particular to a casing shrinkage knotting and tail sealing mechanism.

Background

Casings used in filling plants, such as sausage makers, often require that the ends of the casing be tied off so as to avoid that the filling material is flushed out of the ends of the casing when filling the casing with filling material. The casing produced is very long and is usually shrunk and segmented into "sticks", i.e. shrunk casing sticks. One end of the shrink-on sausage skin stick must be sealed during the enema. There are many ways to seal the shrink-fit stick, but knotting is the best treatment when the filling pressure is particularly high or the filling material is relatively fluid.

However, in the conventional sausage casing knotting machine, due to the structural limitation, the knotting head needs to knot at a position far away from the end part of the casing sleeving and shrinking rod, and after the knot is knotted, the knot is pulled to a direction close to the end part of the casing sleeving and shrinking rod through the push-pull mechanism, so that the equipment structure is complex and the mechanism action is complicated; moreover, the sausage casing which needs to be pulled out is longer when knotting, and more sausage casings need to be cut off after knotting, so that the waste of sausage casing materials is caused.

Accordingly, the prior art is yet to be improved and developed.

Disclosure of Invention

The invention aims to provide a casing shrinkage knotting and tail sealing mechanism, and aims to solve the problems that due to structural limitation, a push-pull mechanism is required to pull a knot to a position close to the end part of a casing shrinkage rod after the knot is knotted, the equipment structure is complex, the mechanism action is complex, and casing materials are wasted in the conventional casing knotting machine.

The technical scheme of the invention is as follows: a casing shrinkage knotting and tail sealing mechanism comprises a knotting head structure, a clamping structure and a needle guiding structure, wherein a casing shrinkage rod at one end of the casing shrinkage rod is unfolded to form an unfolded free end and is connected with an unfolded part of the end of the casing shrinkage rod, the knotting head structure, the clamping structure and the end of the casing shrinkage rod move relatively to each other, so that the knotting head structure and the clamping structure are close to the end of the casing shrinkage rod, meanwhile, the end of the unfolded free end of the casing shrinkage rod clamped by the clamping structure rotates around the knotting head structure to wind the unfolded free end of the casing shrinkage rod on the outer surface of the knotting head structure to form a knot ring (through calculation, the designed knotting head structure, the clamping structure and the end of the casing shrinkage rod have a relative translation stroke exactly equal to the circumference of the knot ring which needs to be wound on the knotting head structure), so that the knot ring wound on the head structure is, after the knotting head structure, the clamping structure and the end part of the casing shrinking rod relatively move in place, the clamping structure clamps the end part of the unfolding free end of the casing shrinking rod to continuously rotate around the knotting head structure so that the unfolding free end of the casing shrinking rod is wound on the upper end part of the knotting head structure, the knotting head structure clamps the unfolding free end part of the casing shrinking rod positioned on the upper end part of the knotting head structure, meanwhile, the clamping structure releases the end part of the unfolding free end of the casing shrinking rod, pushes the knot ring on the outer surface of the knotting head structure to separate the knot ring from the outer surface of the knotting head structure, the needle guiding structure fixes the knot ring, the knotting head structure clamps the unfolding free end of the casing shrinking rod, the clamping structure and the end part of the casing shrinking rod move relatively to reset, so that the knot ring is tensioned to form a casing knot, meanwhile, the clamping structure rotates around the knotting head structure to reset, and the knotting head structure opens the free unfolding end of the casing rod which is contracted by the release sleeve.

The casing shrinkage sausage casing knotting and tail sealing mechanism comprises a first knotting head and a second knotting head, wherein the first knotting head and the second knotting head are folded or opened according to knotting requirements.

The casing shrinkage sausage casing knotting and tail sealing mechanism is characterized in that the first knotting head is pushed to move towards the second knotting head so that the first knotting head and the second knotting head are closed; or the second knotting head is pushed to move towards the first knotting head direction, so that the second knotting head is folded with the first knotting head; the first knotting head and the second knotting head can be pushed to move simultaneously to enable the first knotting head and the second knotting head to be closed.

The casing shrinkage casing knotting and tail sealing mechanism further comprises a first knotting rod and a connecting rod, the first knotting head is integrally arranged at the top of the first knotting rod, a U-shaped mounting position is arranged at the top of the connecting rod, two ends of a push rod are respectively mounted on the U-shaped mounting positions, one end of a second knotting head is provided with a kidney-shaped through hole, the other end of the second knotting head is hinged with the first knotting head through a hinge shaft, and the push rod penetrates through the kidney-shaped through hole; when the first knotting head and the second knotting head need to be folded, the connecting rod is pushed to enable the pushing rod to move in the kidney-shaped through hole, one end of the second knotting head is pushed to rotate around a hinge shaft hinged with the first knotting head, one end of the second knotting head is enabled to rotate in the direction close to the first knotting head, and the first knotting head and the second knotting head are folded to clamp the part, located between the second knotting head and the first knotting head, of the free unfolding end of the casing rod.

The casing shrinkage casing knotting and tail sealing mechanism further comprises a first knotting rod and a second knotting rod, the first knotting head is bent relative to the first knotting rod and arranged on the top of the first knotting rod, the second knotting head is bent relative to the second knotting rod and arranged on the top of the second knotting rod, the bending degree of the first knotting head relative to the first knotting rod is matched with the bending degree of the second knotting head relative to the second knotting rod, and the first knotting head and the second knotting head are folded or unfolded according to knotting requirements.

The casing shrinkage casing knotting and tail sealing machine knotting head structure comprises a first knotting rod, wherein the first knotting head is integrally arranged at the top of the first knotting rod, one end of a second knotting head is hinged to the first knotting rod, and the second knotting head and the first knotting head are folded or opened according to knotting requirements.

The casing contracts casing and ties a knot and seal tail machine's knot head structure, wherein, still establish the apical cover on first knot pole including the cover, the other end and the apical cover of second knot head are connected: the driving top sleeve moves upwards along the first knotting rod to enable the second knotting head to rotate around the hinge point to be folded with the first knotting head, and the driving top sleeve moves downwards along the first knotting rod to enable the second knotting head to rotate around the hinge point to be folded with the first knotting head.

The casing shrinkage casing knotting and tail sealing machine knotting head structure comprises a first knotting rod, wherein the first knotting head is integrally arranged at the top of the first knotting rod, the middle of the second knotting head is hinged to the first knotting rod, and the second knotting head and the first knotting head are folded or opened according to knotting requirements.

The casing contracts casing and ties a knot and seal tail machine's knot head structure, wherein, still include the pull rod, the top of pull rod is articulated with the one end of second knot: the driving pull rod moves upwards along the vertical direction to drive the second knotting head to rotate around the hinge point, so that the other end of the second knotting head is folded with the first knotting head, the driving pull rod moves downwards along the vertical direction to drive the second knotting head to rotate around the hinge point, and the other end of the second knotting head and the first knotting head are opened.

The casing shrinkage casing knotting and tail sealing mechanism further comprises a shifting fork, a shifting fork limiting groove is formed in the outer surface of the first knotting rod, the shifting fork is arranged in the shifting fork limiting groove and can move up and down along the shifting fork limiting groove, and the shifting fork protrudes relative to the outer surface of the first knotting rod; when the knot ring wound on the knot head structure needs to be pushed away from the knot head structure, the shifting fork is pushed to move along the shifting fork limiting groove, so that the shifting fork pushes the knot ring wound on the knot head structure away from the knot head structure.

The casing shrinkage casing knotting and tail sealing mechanism is characterized in that the clamping structure comprises a first clamping part and a second clamping part, the first clamping part and the second clamping part are closed to clamp the end part of the expansion free end of the casing shrinkage rod, and the end part of the expansion free end of the casing shrinkage rod which is not clamped any more is opened by the first clamping part and the second clamping part.

The casing shrinkage casing knotting and tail sealing mechanism is characterized in that the first clamping part is pushed to be folded with the second clamping part in the direction of the second clamping part; or the second clamping part is pushed to be folded with the first clamping part in the direction of the first clamping part; or simultaneously pushing the first clamping part and the second clamping part to enable the first clamping part and the second clamping part to be closed.

The casing shrinkage casing knotting and tail sealing mechanism is characterized in that the second clamping part is pushed to be folded towards the first clamping part and the first clamping part: the clamping structure further comprises a first hinged rod and a second hinged rod, the first clamping part is arranged at one end of the first hinged rod, the second clamping part is arranged at one end of the second hinged rod, and the first hinged rod is hinged with the second hinged rod; the other end of the second hinged rod is pushed to enable the first clamping part and the second clamping part to be closed or opened.

The casing shrinkage casing knotting and tail sealing mechanism comprises a clamping structure, a first knotting rod and a second knotting rod, wherein the clamping structure further comprises a movable sleeve, the movable sleeve is sleeved outside the first knotting rod, a push block is arranged at the end part of the other end of the second hinged rod, the push block is connected with a fixed spring positioned below the push block, and the movable sleeve is positioned right below the push block; at the initial state, the movable sleeve is not in contact with the push block, at the moment, the other end of the second hinged rod enables the first clamping part and the second clamping part to be folded under the action of the pulling force of the fixed spring, the end part of the unfolded free end of the sausage casing stick can be clamped and sleeved in a retracted mode, the movable sleeve is pushed, the movable sleeve is enabled to be in contact with the push block and pushes the push block to move upwards, and the first clamping part and the second clamping part are enabled to be opened.

The casing shrinkage and casing knotting tail sealing mechanism is characterized in that the shifting fork is arranged on the movable sleeve and drives the movable sleeve to enable the shifting fork to move up and down along the shifting fork limiting groove.

The casing that contracts of cover knot seals tail mechanism, wherein, clamping structure still includes the push rod, is provided with the ejector pad at the other end tip of second articulated rod, the ejector pad is connected with the fixed spring who is located the below: in an initial state, the push rod is not in contact with the push block, at the moment, the other end of the second hinged rod enables the first clamping part and the second clamping part to be folded under the action of the pulling force of the fixed spring, the end part of the unfolded free end of the casing rod can be clamped and sleeved in a retracted mode, when the first clamping part and the second clamping part need to be opened, the push rod is driven to enable the push rod to be in contact with the push block and push the push block to move upwards, the first clamping part and the second clamping part are opened, and at the moment, the fixed spring is stretched.

The casing shrinkage casing knotting and tail sealing mechanism comprises a clamping structure, a first knotting head and a second knotting head, wherein the clamping structure further comprises a movable sleeve, the movable sleeve is sleeved outside the first knotting head, a push block is arranged at the end part of the other end of a second hinged rod, the movable sleeve is located under the push block, one end of the push block is connected with one end of a connecting piece, the other end of the connecting piece is connected with the movable sleeve, the movable sleeve can move up and down along the first knotting head, and the movable sleeve rotates around the first knotting head along with the clamping structure: under the initial state, the movable sleeve pulls the push block downwards through the connecting piece, at the moment, the other end of the second hinged rod enables the first clamping part and the second clamping part to be folded under the action of the pulling force of the connecting piece, the end part of the unfolding free end of the sausage casing rod can be clamped and sleeved in a shrinking mode, when the first clamping part and the second clamping part need to be opened, the movable sleeve is pushed, the movable sleeve drives the push block to move upwards through the connecting piece, and the first clamping part and the second clamping part are opened.

The casing shrinkage sausage casing knotting and tail sealing mechanism is characterized in that the first knotting head and the second knotting head are designed to be capable of ascending and descending.

The casing shrinkage and casing knotting and tail sealing mechanism is characterized in that the knotting head structure, the clamping structure and the end part of the casing shrinkage rod move relatively, and the casing shrinkage and casing knotting and tail sealing mechanism is realized by driving the knotting head structure and the clamping structure to move relatively to the direction of the casing shrinkage rod; or the casing rod is driven to move relative to the knotting head structure and the clamping structure; or the knotting head structure, the clamping structure and the casing shrinking rod are driven to move simultaneously.

The casing that contracts of cover knot seals tail mechanism, wherein, knot head structure, clamping structure and the casing stick tip that contracts of cover between relative movement, contract the casing stick direction through the drive and remove the realization for the cover with the clamping structure of knoing: the casing shrinkage casing knotting and tail sealing mechanism further comprises a driving knotting head structure and a moving driving structure, wherein the clamping structure is close to or departs from the end part of the casing shrinkage casing rod, the moving driving structure comprises a moving plate, and the knotting head structure and the clamping structure are installed on the moving plate and move together with the moving plate.

The casing shrinkage and casing knotting and tail sealing mechanism is characterized in that the clamping structure drives the end part of the unfolding free end of the casing shrinkage and casing shrinkage rod to rotate around the knotting head structure and is driven by the rotary driving structure to realize.

The casing shrinkage and casing knotting tail sealing mechanism is characterized in that the rotary driving structure comprises a rack, a first straight gear, a gear transmission shaft, a second straight gear, a third straight gear, a clamping mounting seat and a clamping seat, the length direction of the rack is parallel to the moving direction of the knotting head structure and the clamping structure, the rack is in meshing transmission with a first straight gear, a gear transmission shaft is vertically arranged on the guide sliding seat through a bearing, the first straight gear is arranged on one end of the gear transmission shaft, a second straight gear is arranged on the other end of the gear transmission shaft, a third straight gear is arranged on the top surface of the guide sliding seat, a clamping installation seat is arranged on the third straight gear, a clamping seat is arranged on the clamping installation seat, the end part of the other end of the first hinge rod is arranged on the clamping seat, the third straight gear is sleeved outside the knotting head structure, the guide sliding seat is arranged in a cylindrical shape, and the cylindrical guide sliding seat is sleeved outside the knotting head structure; the first straight gear, the gear transmission shaft and the second straight gear are driven to coaxially rotate through the driving rack moving back and forth, so that the third straight gear, the clamping mounting seat and the clamping seat rotate, and the clamping structure rotates around the knotting head structure to knot.

The casing shrinkage sausage casing knotting and tail sealing mechanism is characterized in that the guide needle structure comprises a needle cylinder and a guide needle, one end of the guide needle is arranged in the needle cylinder, and the other end of the guide needle can extend out or retract along the needle cylinder; the other end of the guide needle extends out of the needle cylinder to penetrate through the knot ring, and the knot ring is fixed not to move when the knotting head structure and the clamping structure move and reset.

The casing shrinkage casing knotting and tail sealing mechanism is characterized in that the needle guiding structure further comprises a needle guiding position adjusting structure, the needle cylinder is arranged on the needle guiding position adjusting structure, the needle cylinder and the needle are driven to move to a proper position through the needle guiding position adjusting structure, and a knot is fixed.

The invention has the beneficial effects that: according to the casing shrinkage knotting and tail sealing mechanism, when the clamping structure clamps the unfolded free end of the casing shrinkage rod to be knotted in a rotating mode around the knotting head structure, the casing shrinkage rod is made to move towards the direction close to the knotting head structure, or the knotting head structure is made to move towards the direction close to the casing shrinkage rod, so that the knotted casing knot is close to the end of the casing shrinkage rod, and the mechanism is simple and labor-saving in action process; when the sausage casing is knotted, the sausage casing knot moves to be close to the end part of the casing sleeving and shrinking rod, so that the length of the reserved sausage casing material for knotting can be reduced, and the production cost of the sausage casing is saved; the whole casing shrinkage casing knotting and tail sealing mechanism is reasonable in structure setting, simple and compact in equipment structure, smooth in knotting action connection and capable of meeting use requirements.

Drawings

Fig. 1 to 2 are schematic structural views of a casing shrinkage and casing knotting and tail sealing mechanism in the invention.

Fig. 3 to 5 are schematic structural diagrams of the sausage casing shrinking and knotting tail sealing mechanism in detail.

FIG. 6 is a bottom view of the casing shrinkage and knotting tail sealing mechanism of the present invention.

FIGS. 7-13 are schematic views of a knotting head structure and a clamping structure of the present invention.

FIG. 14 is a schematic structural view of example A2 of the present invention.

FIG. 15 is a schematic structural view of example A3 of the present invention.

FIG. 16 is a schematic structural view of example A4 of the present invention.

Fig. 17-26 are flow charts of the sausage casing shrinking and knotting tail sealing steps in the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.

As shown in fig. 1 to 13, a casing shrinkage and knotting tail sealing mechanism comprises a knotting head structure, a holding structure and a needle guiding structure, wherein a casing shrinkage and knotting at one end of a casing shrinkage and knotting rod is unfolded to form an unfolded free end, the casing shrinkage and knotting rod is connected with an undeployed part of the end of the casing shrinkage and knotting rod, the knotting head structure, the holding structure and the end of the casing shrinkage and knotting rod move relatively, the knotting head structure and the holding structure are close to the end of the casing shrinkage and knotting rod, the end of the casing shrinkage and knotting rod at the unfolding free end of the casing shrinkage and knotting rod is clamped by the holding structure and is rotated around the knotting head structure to wind the unfolding free end of the casing shrinkage and knotting rod on the outer surface of the knotting head structure to form a knot loop (by calculation, the designed knotting head structure, the holding structure and the end of the casing shrinkage and knotting rod are moved relatively in a translation stroke exactly equal, the knot ring is close to the undeployed end part of the casing shrinking rod as much as possible, so that the knotted casing knot is close to the undeployed end part of the casing shrinking rod as much as possible, the casing knot is not required to be pushed and pulled by a push-pull mechanism to be close to the undeployed end part of the casing shrinking rod after being knotted, and the length of the casing material reserved for knotting can be effectively reduced by the mode of the technical scheme). The needle guiding structure fixes the knot ring, the knot head structure clamps the expansion free end of the casing shrinking rod, the clamping structure and the end part of the casing shrinking rod move relatively to reset, so that the knot ring is tensioned to form a casing knot, meanwhile, the clamping structure rotates around the knot head structure to reset, and the knot head structure opens the expansion free end of the casing shrinking rod.

Specifically, the knotting head structure can be realized by adopting various structures:

example A1

The knotting head structure comprises a first knotting rod, a first knotting head 11, a second knotting head 12 and a shifting fork 13, wherein the first knotting head 11 is integrally arranged at the top of the first knotting rod, the free unfolding end of a clamping structure clamping and shrinking casing rod rotates around the knotting head structure to enable the free unfolding end of the casing rod to be wound on the outer surface of the first knotting head 11 to form a knot ring, the free unfolding end of the casing rod clamping and shrinking casing rod continues to rotate around the knotting head structure to enable the free unfolding end of the casing rod to be wound on the upper end of the first knotting head 11, the free unfolding end of the casing rod wound on the upper end of the first knotting head 11 is located between the second knotting head 12 and the first knotting head 11, the second knotting head 12 and the first knotting head 11 are folded to clamp the part, located on the upper end of the first knotting head 11, of the free unfolding end of the casing rod, the shifting fork 13 pushes the knot ring located on the knotting head structure to enable the, the part of the free end of the casing rod which is clamped by the second knotting head 12 and the first knotting head 11 penetrates through the knot.

Further, the first knotting head 11 and the second knotting head 12 can be folded with the second knotting head 12 by pushing the first knotting head 11 toward the second knotting head 12, or can be folded with the first knotting head 11 by pushing the second knotting head 12 toward the first knotting head 11, or can be folded by pushing the first knotting head 11 and the second knotting head 12 simultaneously.

In order to avoid that the unfolded free end portion of the shrunk casing stick around the first knotting head 11 is released from the first knotting head 11 when the first knotting head 11 and the second knotting head 12 are closed, in this embodiment, the second knotting head 12 is pushed to close the first knotting head 11 in the direction of the first knotting head 11: the knotting head structure further comprises a connecting rod 14, a U-shaped mounting position is arranged at the top of the connecting rod 14, two ends of a push rod 15 are respectively mounted on the U-shaped mounting positions, a waist-shaped through hole 121 is formed in one end of a second knotting head 12, the other end of the second knotting head 12 is hinged to the first knotting head 11 through a hinge shaft 19, and the push rod 15 penetrates through the waist-shaped through hole 121; when the first knotting head 11 and the second knotting head 12 need to be closed, the connecting rod 14 is pushed, the pushing rod 15 moves in the waist-shaped through hole 121, one end of the second knotting head 12 is pushed to rotate around the hinge shaft 19 hinged with the first knotting head 11, one end of the second knotting head 12 rotates in the direction close to the first knotting head 11, and the first knotting head 11 and the second knotting head 12 are closed to clamp the part, between the second knotting head 12 and the first knotting head 11, of the free unfolding end of the casing rod.

In this technical scheme, can drive connecting rod 14 through the removal of multiple different power structure. In this embodiment, the connecting rod 14 is pushed to move by the first cylinder 16 for the sake of simplifying the structure.

Furthermore, a shifting fork limiting groove is formed in the outer surface of the first knotting rod, the shifting fork 13 is arranged in the shifting fork limiting groove and can move up and down along the shifting fork limiting groove, and the shifting fork 13 protrudes relative to the outer surface of the first knotting rod; when the knot ring wound on the knot head structure needs to be pushed away from the knot head structure, the shifting fork 13 is pushed to move along the shifting fork limiting groove, so that the shifting fork 13 pushes the knot ring wound on the knot head structure away from the knot head structure.

In order to avoid pushing the knot ring away from the knotting head structure at the shift fork 13, only push one side of the knot ring out, and the another side of the knot ring still winds and establishes in the knotting head structure, can solve through setting up a plurality of shift forks 13, and a plurality of shift forks 13 evenly set up on the surface of first knotting rod along circumference, and the quantity that shift fork 13 set up is more, can guarantee that the knot ring can be pushed out fast completely, but whole equipment structure also can become relative complexity.

In the embodiment, two shifting forks 13 are arranged, two shifting fork limiting grooves are arranged, the two shifting fork limiting grooves are symmetrically arranged on the outer surface of the first knotting rod, the two shifting fork limiting grooves are positioned on the same diameter of the circumferential section of the first knotting rod, one shifting fork 13 is arranged in one shifting fork limiting groove, and the other shifting fork 13 is arranged in the other shifting fork limiting groove; two shift forks 13 symmetry set up on the surface of first knot pole, guarantee that whole knot circle can be pushed out smoothly, simplify whole equipment structure simultaneously as far as possible.

In this technical scheme, can drive shift fork 13 through multiple different power structure and reciprocate along the shift fork spacing groove. In this embodiment, in order to simplify the structure, the shift fork 13 is moved by the second cylinder 17.

Example A2

As shown in FIG. 14, the knotting head structure further includes a first knotting bar B1 and a second knotting bar B2, the first knotting head 11 is arranged on top of the first knotting bar B1 to be bent with respect to first knotting bar B1, the second knotting head 12 is arranged on top of the second knotting bar B2 to be bent with respect to second knotting bar B2, the degree of bending of the first knotting head 11 with respect to first knotting bar B1 is matched with the degree of bending of the second knotting head 12 with respect to second knotting bar B2, and the first knotting head 11 and the second knotting head 12 are closed or opened according to the need of knotting. The process of knotting by the first knotting head 11 and the second knotting head 12 in combination with the holding structure is the same as the process of knotting by the first knotting head 11 and the second knotting head 12 in combination with the holding structure in example A1, and the detailed description is omitted here.

Further, the first knotting head 11 and the second knotting head 12 can be closed by moving the first knotting bar B1, the second knotting head 12 can be closed by moving the second knotting bar B2, and the first knotting head 11 and the second knotting head 12 can be closed by simultaneously moving the first knotting bar B1 and the second knotting bar B2.

Example A3

As shown in fig. 15, the knotting head structure further includes a first knotting bar C1, the first knotting head 11 is integrally disposed on the top of the first knotting bar C1, one end of the second knotting head 12 is hinged to the first knotting bar C1, and the second knotting head 12 and the first knotting head 11 are folded or unfolded according to the knotting requirement. The process of knotting by the first knotting head 11 and the second knotting head 12 in combination with the holding structure is the same as the process of knotting by the first knotting head 11 and the second knotting head 12 in combination with the holding structure in example A1, and the detailed description is omitted here.

Further, the second knotting head 12 can be driven to rotate around the hinge point to be closed or opened with the first knotting head 11 through various structures. In this embodiment, the knotting head structure further includes a top cover C2 sleeved on the first knotting rod C1, and the other end of the second knotting head 2 is connected with the top cover C2: the top cover C2 is driven to move upward along the first knotting bar C1 to rotate the second knotting head 12 about the hinge point to close the first knotting head 11, and the top cover C2 is driven to move downward along the first knotting bar C1 to rotate the second knotting head 12 about the hinge point to close the first knotting head 11.

Example A4

As shown in fig. 16, the knotting head structure further comprises a first knotting bar D1, the first knotting head 11 is integrally arranged at the top of the first knotting bar D1, the middle part of the second knotting head 12 is hinged on the first knotting bar D1, and the second knotting head 12 and the first knotting head 11 are folded or unfolded according to the knotting requirement. The process of knotting by the second knotting head 12 and the first knotting head 11 in combination with the holding structure is the same as the process of knotting by the first knotting head 11 and the second knotting head 12 in combination with the holding structure in example A1, and the detailed description is omitted here.

Further, the second knotting head 12 can be driven to rotate around the hinge point to be closed or opened with the first knotting head 11 through various structures. In this embodiment, the knotting head structure further includes a pull rod D2, and the top end of the pull rod D2 is hinged to one end of the second knotting head 12: the driving pull rod D2 moves upward along the vertical direction to drive the second knotting head 12 to rotate around the hinge point, so that the other end of the second knotting head 12 is folded with the first knotting head 11, and the driving pull rod D2 moves downward along the vertical direction to drive the second knotting head 12 to rotate around the hinge point, so that the other end of the second knotting head 12 is opened with the first knotting head 11.

Specifically, the clamping structure may be implemented in a variety of structures:

example B1

In particular, the clamping structure comprises a first clamping part 21 and a second clamping part 22, the first clamping part 21 and the second clamping part 22 close the free end of the casing stick, and the first clamping part 21 and the second clamping part 22 open the free end of the casing stick, which is no longer clamped.

Further, the first clamping portion 21 and the second clamping portion 22 can be folded together with the second clamping portion 22 by pushing the first clamping portion 21 toward the second clamping portion 22, can also be folded together with the first clamping portion 21 by pushing the second clamping portion 22 toward the first clamping portion 21, and can also be folded together by pushing the first clamping portion 21 and the second clamping portion 22 at the same time.

In this embodiment, the second clamping portion 22 is pushed to fold with the first clamping portion 21 in the direction of the first clamping portion 21: the clamping structure further comprises a first hinged rod 23 and a second hinged rod 24, the first clamping part 21 is arranged at one end of the first hinged rod 23, the second clamping part 22 is arranged at one end of the second hinged rod 24, and one end of the first hinged rod 23 is hinged with one end of the second hinged rod 24; the first and second clamping parts 21 and 22 are closed or opened by pushing the other end of the second hinge lever 24.

Further, in order to facilitate pushing the second clamping portion 22 to fold with the first clamping portion 21 in the direction of the first clamping portion 21, the clamping structure further includes a moving sleeve 25, the moving sleeve 25 is sleeved outside the first knotting rod, a pushing block 26 is arranged at the end of the other end of the second hinged rod 24, the pushing block 26 is connected with a fixed spring located below, and the moving sleeve 25 is located right below the pushing block 26; in the initial state, the movable sleeve 25 is not in contact with the push block 26, at this time, the other end of the second hinge rod 24 is under the pulling force of the fixed spring, so that the first clamping part 21 and the second clamping part 22 are folded, the end part of the unfolded free end of the casing stick can be clamped, and when the first clamping part 21 and the second clamping part 22 need to be opened, the movable sleeve 25 is pushed, so that the movable sleeve 25 is in contact with the push block 26 and the push block 26 is pushed to move upwards, so that the first clamping part 21 and the second clamping part 22 are opened, and at this time, the fixed spring is stretched; by arranging the movable sleeve 25, the clamping structure can be controlled to be closed or opened at any position rotating around the knotting head structure, so that the whole clamping structure is simple and small in structure and reasonable in arrangement.

Example B2

As an alternative, the other structure of the clamping structure is identical to that of the clamping structure in embodiment B1, by replacing the traveling sleeve 25 by a push rod: in the initial state, the push rod is not in contact with the push block 26, at this time, the other end of the second hinge rod 24 is under the pulling force of the fixed spring, so that the first clamping part 21 and the second clamping part 22 are closed, the end part of the unfolded free end of the casing stick can be clamped, when the first clamping part 21 and the second clamping part 22 need to be opened, the push rod is driven to be in contact with the push block 26 and push the push block 26 to move upwards, so that the first clamping part 21 and the second clamping part 22 are opened, and the fixed spring is stretched.

Example B3

As an alternative, a connecting piece is used to replace the fixed spring, one end of the connecting piece is connected with the pushing block 26, the other end of the connecting piece is connected with the movable sleeve 25, the movable sleeve 25 can move up and down along the first knotting rod, the movable sleeve 25 simultaneously rotates around the first knotting rod along with the clamping structure, and other structures of the clamping structure are consistent with the structure of the clamping structure in the embodiment B1: in the initial state, the moving sleeve 25 pulls the push block 26 downwards through the connecting piece, at this time, the other end of the second hinge rod 24 is under the pulling force of the connecting piece, so that the first clamping part 21 and the second clamping part 22 are folded, the end part of the unfolded free end of the casing stick can be clamped and contracted, when the first clamping part 21 and the second clamping part 22 need to be opened, the moving sleeve 25 is pushed, the moving sleeve 25 drives the push block 26 to move upwards through the connecting piece, and the first clamping part 21 and the second clamping part 22 are opened.

In order to simplify the structure of the whole equipment and make the structure of the whole equipment more compact, the shifting fork 13 is arranged on the movable sleeve 25, the movable sleeve 25 is connected with a cylinder shaft of the second cylinder 17, and the shifting fork 13 can move up and down along a shifting fork limiting groove and the first clamping part 21 and the second clamping part 22 can be folded or opened through the second cylinder 17.

When the part of the free end of the casing bar which is clamped by the second knotting head 12 and the first knotting head 11 passes through the knot, the free end of the casing bar can be moved to pass through the knot, or the knot can be moved to be sleeved into the free end of the casing bar. In the technical scheme, a mode of pushing the ring to move and sleeve the unfolded free end of the shrunk casing rod is adopted.

In the embodiment, in order to simplify the action of the equipment, in the process of pushing the shifting fork 13 to move upwards along the shifting fork limiting groove to push the ring wound on the outer surface of the first knotting head 11 upwards away from the outer surface of the first knotting head 11, the ring is pushed above the first knotting head 11 and the second knotting head 12, and the wound part of the unfolded free end of the casing rod clamped by the second knotting head 12 and the first knotting head 11 is naturally positioned below the ring, so that the ring is pushed away from the first knotting head 11 and the second knotting head 12, and meanwhile, the part of the casing rod clamped by the second knotting head 12 and the first knotting head 11 passes through the ring, so that the action of the whole equipment is more compact and simpler.

In order to make the knot loop be able to be pulled more tightly and ensure the knotting effect, the first knotting head 11 and the second knotting head 12 are designed to be able to lift up and down, after the knotting head structure, the clamping structure and the end part of the casing shrinkage stick are relatively moved to enable the knotting head structure and the clamping structure to be close to the end part of the casing shrinkage stick, the first knotting head 11 and the second knotting head 12 are lowered, the first knotting head and the second knotting head, the free end portions of the casing rod held by the holding structure are positioned above the loops, when the loop is pushed off the outer surface of the first knotting head 11, the loop is positioned above the first knotting head 11 and the second knotting head 12, when the knotting head structure, the clamping structure and the end part of the casing shrinkage stick are relatively moved and reset, the first knotting head 11 and the second knotting head 12 are lifted and reset simultaneously, so that the first knotting head 11 and the second knotting head 12 are positioned above the knot ring; because when the knotting head structure, the clamping structure and the end part of the casing shrinking rod are moved relatively to reset, the first knotting head 11 and the second knotting head 12 are lifted and reset simultaneously, which is equivalent to that the first knotting head 11 and the second knotting head 12 clamp the unfolding free end of the casing shrinking rod to move upwards in an inclined way relative to the knot ring, so that the knot ring is pulled tighter, and the casing knot is ensured not to be scattered.

In the technical scheme, the first knotting head 11 and the second knotting head 12 can be driven to lift through various different power structures. In this embodiment, in order to simplify the structure, the first knotting head 11 and the second knotting head 12 are pushed to ascend and descend by the third cylinder 18.

Wherein, knot head structure, clamping structure and cover contract relative movement between the casing stick tip, can contract casing stick direction through drive knot head structure and clamping structure for the cover and move the realization, also can contract the casing stick through the drive cover and move the realization for knot head structure and clamping structure direction, can also contract the casing stick through drive knot head structure and clamping structure, cover and move the realization simultaneously. In the technical scheme, in order to simplify the structure of the device, the casing rod is driven to move in the direction relative to the casing shrinkage rod by the aid of the knotting head structure and the clamping structure.

As a specific embodiment, the casing shrinkage knotting and tail sealing mechanism further comprises a knotting head structure and a moving driving structure for driving the clamping structure to approach or leave the end of the casing shrinkage rod, the moving driving structure comprises a fourth cylinder 31 and a moving plate 32, a cylinder shaft of the fourth cylinder 31 is connected with the moving plate 32, and the knotting head structure and the clamping structure are mounted on the moving plate 32 and move together with the moving plate 32.

In order to ensure the moving stability of the knotting head structure and the clamping structure, the moving driving structure further comprises a guide structure, the guide structure comprises a guide optical axis 33 and a guide sliding seat 34 which is sleeved on the guide optical axis 33 and moves back and forth along the guide optical axis 33, the moving plate 32 is arranged on the guide sliding seat 34, the cylinder shaft of the fourth cylinder 31 is connected with the guide sliding seat 34, and the length direction of the guide optical axis 33 is parallel to the telescopic direction of the cylinder shaft of the fourth cylinder 31; when the fourth cylinder 31 drives the driving knotting head structure and the clamping structure to move, the guiding structure is used for guiding the driving knotting head structure and the clamping structure to move and improving the moving stability.

Because the clamping structure needs to clamp the end part of the unfolded free end of the casing rod to rotate around the knotting head structure in the knotting process, in order to conveniently drive the clamping structure to rotate, and meanwhile, the casing rod knotting and tail sealing mechanism is simplified in equipment structure, the casing rod knotting and tail sealing mechanism further comprises a rotary driving structure which drives the clamping structure to drive the end part of the unfolded free end of the casing rod to rotate around the knotting head structure, the rotary driving structure comprises a rack 41, a first straight gear 42, a gear transmission shaft 43, a second straight gear 44, a third straight gear 45, a clamping installation seat 46 and a clamping seat 47, the length direction of the rack 41 is parallel to the telescopic direction of a cylinder shaft of the fourth cylinder 31, the rack 41 is in meshing transmission with the first straight gear 42, the gear transmission shaft 43 is vertically installed on the guide sliding seat 34 through a bearing, the first straight gear 42 is installed on one end of the gear transmission shaft 43, the second, the third straight gear 45 is arranged on the top surface of the guide sliding seat 34, the clamping installation seat 46 is arranged on the third straight gear 45, the clamping seat 47 is arranged on the clamping installation seat 46, the end part of the other end of the first hinge rod 23 is arranged on the clamping seat 47, the third straight gear 45 is sleeved outside the knotting head structure, the guide sliding seat 34 is arranged into a barrel shape, and the barrel-shaped guide sliding seat 34 is sleeved outside the knotting head structure; the first straight gear 42, the gear transmission shaft 43 and the second straight gear 44 are driven to coaxially rotate by driving the rack 41 to move back and forth, so that the third straight gear 45, the clamping mounting seat 46 and the clamping seat 47 rotate, and the clamping structure rotates around the knotting head structure to knot.

In the technical scheme, when the fourth cylinder 31 drives the knotting head structure and the clamping structure to move back and forth, the first straight gear 42 is driven to move back and forth along the rack 41, and simultaneously the first straight gear 42 rotates around the gear transmission shaft 43 (at the moment, the rack 41 does not move), so that the end part of the free expansion end of the casing rod clamped and shrunk by the clamping structure is driven to rotate around the knotting head structure, namely, when the free expansion end of the casing rod clamped and shrunk by the clamping structure rotates around the knotting head structure to be knotted, the knotted casing knot is close to the non-expanded end part of the casing rod; when the knotting head structure and the clamping structure do not need to move back and forth, but the clamping structure needs to drive the end part of the unfolded free end of the casing shrinking rod to rotate around the knotting head structure, as long as the rack 41 is driven to move back and forth (in the technical scheme, the rack 41 is driven to move back and forth by the fifth air cylinder 48), the first straight gear 42 is driven to rotate around the gear transmission shaft 43 (at the moment, the first straight gear 42 does not move), the end part of the unfolded free end of the casing shrinking rod of the clamping structure is driven to rotate around the knotting head structure, and the knotting head. This technical scheme is through linking to each other rotation drive structure with removal drive structure is ingenious (gear drive shaft 43 passes through the bearing and installs perpendicularly on direction slide 34 promptly), can drive the expansion free end that the clamping structure clamping sleeve contracted the casing stick simultaneously when making a knot first structure and clamping structure back-and-forth movement around the rotation of the first structure of making a knot of making a knot (solved prior art casing knot apart from the cover contract casing stick tip far away, need the problem that push-and-pull mechanism push-and-pull is close to), but after knot first structure and clamping structure removed the target in place, when clamping structure need continue the rotation, removal drive structure and rotation drive structure can not hinder each other again, guarantee the normal clear of process.

Specifically, the needle guiding structure comprises a needle cylinder 51 and a needle 52, one end of the needle 52 is arranged in the needle cylinder 51, and the other end of the needle 52 can extend or retract along the needle cylinder 51; the other end of the guide needle 52 extends out along the needle cylinder 51 to penetrate through the knot ring, the knot ring is fixed not to move when the knotting head structure and the clamping structure move and reset, and the other end of the guide needle 52 retracts along the needle cylinder 51 to reset after knotting is finished. Wherein the other end of the needle 52 can be driven to extend or retract along the needle cylinder 51 by various driving mechanisms, such as an air cylinder.

In order to make the needle guiding structure better fit and tie a knot, the needle guiding structure further comprises a needle guiding position adjusting structure, the needle cylinder 51 is arranged on the needle guiding position adjusting structure, and the needle cylinder 51 and the needle 52 are driven to move to proper positions through the needle guiding position adjusting structure to fix the knot.

The operation process of the casing shrinkage sausage casing knotting and tail sealing mechanism is as follows (as shown in fig. 17 to fig. 26): the contracted casing stick is conveyed to the contracted casing knotting and tail sealing mechanism, the first clamping part 21 and the second clamping part 22 are used for closing and clamping the end part of the unfolded free end of the contracted casing stick, the knotting head structure and the clamping structure move towards the direction close to the contracted casing stick, the clamping structure drives the unfolded free end of the contracted casing stick to rotate around the knotting head structure, the unfolded free end of the contracted casing stick is wound on the outer surface of the first knotting head 11 to form a knot (as shown in figures 17 to 18), after the knotting head structure and the clamping structure move to the right position, the first knotting head 11 and the second knotting head 12 descend, the clamping structure continues to drive the unfolded free end of the contracted casing stick to rotate around the knotting head structure, the unfolded free end of the contracted casing stick is wound on the upper end part of the first knotting head 11 and is arranged between the first knotting head 11 and the second knotting head 12 (as shown in figure 19), and the first knotting head 11 and the second knotting head 12 clamp the sleeve between the first knotting head 11 and the second knotting head 12 Retracting the unfolded free end portion of the sausage casing stick, then winding the unfolded free end of the sausage casing stick on the second knotting head 12 (as shown in fig. 20 to 22), driving the moving sleeve 25 to move upwards to drive the shift fork 13 to push out the knot wound on the outer surface of the first knotting head 11, at which time the first clamping portion 21 and the second clamping portion 22 are temporarily opened under the action of the moving sleeve 25, and the first knotting head 11 and the second knotting head 12, the unfolded free end portion of the sausage casing stick clamped by the first knotting head 11 and the second knotting head 12 are located below the knot (as shown in fig. 23 to 24), the other end of the guide needle 52 is extended through the knot along the needle cylinder 51 (as shown in fig. 25), the moving sleeve 25 is moved downwards to reset, the shift fork 13 is moved to reset, the knotting head structure and the clamping structure are moved to reset, and simultaneously the moving sleeve 25 is moved upwards to drive the first clamping portion 21 and the second clamping portion 22 to be opened to reset, at the same time, the clamping structure rotates around the knotting head structure to reset, at the same time, the first knotting head 11 and the second knotting head 12 ascend and reset, the first knotting head 11 and the second knotting head 12, and the expanded free end parts of the casing shrinking rod clamped by the first knotting head 11 and the second knotting head 12 move from the position close to the casing shrinking rod to the initial position far away from the casing shrinking rod, so that the loops are tightened, and the casing knots are obtained (as shown in fig. 26).

In the technical scheme, when the clamping structure clamps the unfolded free end of the casing shrinkage rod to rotate around the knotting head structure to knot, the casing shrinkage rod moves towards the direction close to the knotting head structure, or the knotting head structure moves towards the direction close to the casing shrinkage rod, so that the knotted casing knot is close to the end part of the casing shrinkage rod, and the action process of the mechanism is simple and labor-saving; when the sausage casing is knotted, the sausage casing knot moves to be close to the end part of the casing sleeving and shrinking rod, so that the length of the reserved sausage casing material for knotting can be reduced, and the production cost of the sausage casing is saved; the whole casing shrinkage casing knotting and tail sealing mechanism is reasonable in structure setting, simple and compact in equipment structure, smooth in knotting action connection and capable of meeting use requirements.

In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.

Reference numerals

A first knotting head 11; a second knotting head 12; a kidney-shaped through-hole 121; a shift fork 13; a connecting rod 14; a push rod 15; a first cylinder 16; a second cylinder 17; a third cylinder 18; a hinge shaft 19; a first clamping portion 21; a second clamping portion 22; a first hinge lever 23; a second hinge lever 24; a traveling sleeve 25; a push block 26; a fourth cylinder 31; a moving plate 32; a guide optical axis 33; a guide slide 34; a rack 41; a first straight gear 42; a gear transmission shaft 43; a second spur gear 44; a third spur gear 45; a clamp mount 46; a holder 47; a needle cylinder 51; a needle 52; a first knotting bar B1; a second knotting bar B2; a first knotting bar C1; a top cover C2; a first knotting bar D1; a pull rod D2.

Claims (17)

1. A casing shrinkage knotting and tail sealing mechanism is characterized by comprising a knotting head structure, a clamping structure and a needle guiding structure, wherein a casing shrinkage rod at one end of the casing shrinkage rod is unfolded to form an unfolded free end and is connected with an unfolded part of the end of the casing shrinkage rod, the knotting head structure and the clamping structure move relative to the end of the casing shrinkage rod to enable the knotting head structure and the clamping structure to be close to the end of the casing shrinkage rod, meanwhile, the unfolded free end of the casing shrinkage rod clamped by the clamping structure rotates around the knotting head structure to enable the unfolded free end of the casing shrinkage rod to be wound on the outer surface of the knotting head structure to form a knot ring, the knot ring wound on the knotting head structure is enabled to be close to the unfolded end of the casing shrinkage rod as much as possible, and after the knotting head structure, the clamping structure and the end of the casing shrinkage rod relatively move in place, the unfolded free end of the casing shrinkage rod clamped by the clamping structure continues to rotate around the knot structure to enable The structure upper end, the casing stick that contracts of cover that knotts head structure upper end portion is cliied to knotting head structure expands free end portion, clamping structure releases the expansion free end tip that the casing stick that contracts of cover simultaneously, promote the knot circle that is located on the first surface of knotting head and make the knot circle break away from the first surface of knotting head, draw the needle structure and fix the knot circle, the first clamping sleeve that knotts contracts the expansion free end of casing stick, clamping structure and the cover contract relative movement between the casing stick tip and reset, make the taut formation casing knot of knot circle, clamping structure restores to the throne around knotting head structure rotation simultaneously, knotting head structure opens the expansion free end that the casing stick that contracts.

2. The shrink-casing knotting and tail-sealing mechanism according to claim 1, comprising a first knotting head and a second knotting head, wherein the first knotting head and the second knotting head are closed or opened according to knotting requirements.

3. The retracting sausage casing knotting and tail sealing mechanism of claim 2, wherein the first knotting head is pushed to move towards the second knotting head to enable the first knotting head and the second knotting head to be closed; or the second knotting head is pushed to move towards the first knotting head direction, so that the second knotting head is folded with the first knotting head; the first knotting head and the second knotting head can be pushed to move simultaneously to enable the first knotting head and the second knotting head to be closed.

4. The shrink-fit casing knotting and tail-sealing mechanism according to claim 2, further comprising a first knotting rod and a connecting rod, wherein the first knotting head is integrally arranged at the top of the first knotting rod, a U-shaped mounting position is arranged at the top of the connecting rod, two ends of the pushing rod are respectively mounted on the U-shaped mounting positions, one end of the second knotting head is provided with a kidney-shaped through hole, the other end of the second knotting head is hinged with the first knotting head through a hinge shaft, and the pushing rod penetrates through the kidney-shaped through hole; when the first knotting head and the second knotting head need to be folded, the connecting rod is pushed to enable the pushing rod to move in the kidney-shaped through hole, one end of the second knotting head is pushed to rotate around a hinge shaft hinged with the first knotting head, one end of the second knotting head is enabled to rotate in the direction close to the first knotting head, and the first knotting head and the second knotting head are folded to clamp the part, located between the second knotting head and the first knotting head, of the free unfolding end of the casing rod.

5. The shrink-set casing knotting and tail-sealing mechanism according to claim 4, further comprising a shifting fork, wherein a shifting fork limiting groove is formed on the outer surface of the first knotting rod, the shifting fork is arranged in the shifting fork limiting groove and can move up and down along the shifting fork limiting groove, and the shifting fork protrudes relative to the outer surface of the first knotting rod; when the knot ring wound on the knot head structure needs to be pushed away from the knot head structure, the shifting fork is pushed to move along the shifting fork limiting groove, so that the shifting fork pushes the knot ring wound on the knot head structure away from the knot head structure.

6. The retracting casing knotting tail closure mechanism of claim 5, wherein the clamping structure comprises a first clamping portion and a second clamping portion, the first clamping portion and the second clamping portion close to clamp the free end of the retracting casing stick, and the first clamping portion and the second clamping portion open to no longer clamp the free end of the retracting casing stick.

7. The retracting sausage casing knotting and tail sealing mechanism of claim 6, wherein the first clamping part is pushed to close with the second clamping part in the direction of the second clamping part; or the second clamping part is pushed to be folded with the first clamping part in the direction of the first clamping part; or simultaneously pushing the first clamping part and the second clamping part to enable the first clamping part and the second clamping part to be closed.

8. The retracting sausage casing knotting and tail sealing mechanism of claim 7, wherein the second clamping part is pushed to close with the first clamping part in the direction of the first clamping part: the clamping structure further comprises a first hinged rod and a second hinged rod, the first clamping part is arranged at one end of the first hinged rod, the second clamping part is arranged at one end of the second hinged rod, and the first hinged rod is hinged with the second hinged rod; the other end of the second hinged rod is pushed to enable the first clamping part and the second clamping part to be closed or opened.

9. The shrink-casing knotting and tail-sealing mechanism according to claim 8, wherein the clamping structure further comprises a moving sleeve, the moving sleeve is sleeved outside the first knotting rod, a pushing block is arranged at the other end of the second hinged rod, the pushing block is connected with a fixed spring positioned below the pushing block, and the moving sleeve is positioned right below the pushing block; at the initial state, the movable sleeve is not in contact with the push block, at the moment, the other end of the second hinged rod enables the first clamping part and the second clamping part to be folded under the action of the pulling force of the fixed spring, the end part of the unfolded free end of the sausage casing stick can be clamped and sleeved in a retracted mode, the movable sleeve is pushed, the movable sleeve is enabled to be in contact with the push block and pushes the push block to move upwards, and the first clamping part and the second clamping part are enabled to be opened.

10. The shrink sausage casing knotting and tail sealing mechanism of claim 9, wherein the shifting fork is arranged on the shifting sleeve, and the shifting sleeve is driven to move the shifting fork up and down along the shifting fork limiting groove.

11. The retracting sausage casing knotting and tail sealing mechanism of claim 2, wherein the first knotting head and the second knotting head are designed to be lifted up and down.

12. The retracting sausage casing knotting and tail sealing mechanism of claim 1, wherein the knotting head structure, the clamping structure and the end of the retracting sausage casing rod are relatively moved by driving the knotting head structure and the clamping structure to move relative to the retracting sausage casing rod; or the casing rod is driven to move relative to the knotting head structure and the clamping structure; or the knotting head structure, the clamping structure and the casing shrinking rod are driven to move simultaneously.

13. The retracting sausage casing knotting and tailing mechanism of claim 12, wherein the relative movement between the knotting head structure, the clamping structure and the retracting sausage casing rod end is realized by driving the knotting head structure and the clamping structure to move relative to the retracting sausage casing rod direction: the casing shrinkage casing knotting and tail sealing mechanism further comprises a driving knotting head structure and a moving driving structure, wherein the clamping structure is close to or departs from the end part of the casing shrinkage casing rod, the moving driving structure comprises a moving plate, and the knotting head structure and the clamping structure are installed on the moving plate and move together with the moving plate.

14. The retracting sausage casing knotting and tailing mechanism of claim 13, wherein the clamping structure drives the free end of the retracting sausage casing rod to rotate around the knotting head structure through driving of the rotary driving structure.

15. The retracting sausage casing knotting and tail sealing mechanism of claim 14, wherein the rotating driving mechanism comprises a rack, a first spur gear, a gear transmission shaft, a second spur gear, a third spur gear, a clamping mounting seat and a clamping seat, the length direction of the rack is parallel to the moving direction of the knotting head structure and the clamping structure, the rack is in meshing transmission with the first spur gear, the gear transmission shaft is vertically installed on the guiding slide seat through a bearing, the first spur gear is installed on one end of the gear transmission shaft, the second spur gear is installed on the other end of the gear transmission shaft, the third spur gear is installed on the top surface of the guiding slide seat, the clamping mounting seat is installed on the third spur gear, the clamping seat is installed on the clamping mounting seat, the other end of the first hinged rod is installed on the clamping seat, the third spur gear is sleeved outside the knotting head structure, the guiding slide seat is arranged in a cylinder shape, the cylindrical guide sliding seat is sleeved outside the knotting head structure; the first straight gear, the gear transmission shaft and the second straight gear are driven to coaxially rotate through the driving rack moving back and forth, so that the third straight gear, the clamping mounting seat and the clamping seat rotate, and the clamping structure rotates around the knotting head structure to knot.

16. The casing shrinkage and casing knotting tail sealing mechanism according to claim 1, wherein the guide needle structure comprises a needle cylinder and a guide needle, one end of the guide needle is arranged in the needle cylinder, and the other end of the guide needle can extend or retract along the needle cylinder; the other end of the guide needle extends out of the needle cylinder to penetrate through the knot ring, and the knot ring is fixed not to move when the knotting head structure and the clamping structure move and reset.

17. The shrink-casing knotting and tail-sealing mechanism of claim 16, wherein the needle guiding structure further comprises a needle guiding position adjusting structure, the needle cylinder is disposed on the needle guiding position adjusting structure, and the needle cylinder and the needle are driven by the needle guiding position adjusting structure to move to a proper position to fix the knot.

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