A perforating machine for pre-treatment of chicken marinated

Abstract

The present invention relates to the technical field of food processing, and in particular to a perforator for pre-treating chicken for pickling, which is characterized in that it comprises a conveyor belt for conveying chicken and a rotating group for perforating the chicken, wherein the shape of the middle area of ​​the working surface of the conveyor belt is an arc that matches the rotating group; the rotating group comprises two side plates distributed front and back, and the lower sides of the circumferential outer walls of the side plates are squeezed into the arc area of ​​the conveyor belt; by adopting a method of automatically perforating the chicken during transportation, the perforation operation can be made simpler and more automated, thereby improving the continuity of the chicken perforation work and thus improving work efficiency, and this operation method can effectively avoid harm to workers and improve safety.

Description

Technical Field

[0001] The invention relates to the technical field of food processing, in particular to a perforator for pre-treating chicken during pickling. Background Art

[0002] Chicken marinating is the process of soaking chicken in marinade for a period of time to allow it to absorb the flavor and seasoning of the marinade and increase the tenderness and taste of the meat. Chicken marinating is a common processing method for chicken. Before marinating, in order to improve the marinating effect of the chicken, improve the taste, shorten the marinating time, and make it easier for the chicken to absorb the flavor, the chicken needs to be perforated to facilitate the entry of pigment into the chicken.

[0003] The commonly used perforation method is that workers place the chicken directly on the needle plate, and by pressing the chicken, the needles on the needle plate pass through the chicken and form holes on it. In this way, the perforation of the chicken is completed. After the perforation of the chicken is completed, it can be removed from the needle plate. However, this perforation method is more dangerous. The needles on the needle plate can easily injure the workers. The workers need to be careful and slow when perforating. In addition, the continuity of the chicken perforation work is poor, resulting in low work efficiency. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a perforator for pre-treatment of marinated chicken, the specific technical solution adopted by the present invention is:

[0005] A perforator for pre-treating chicken during pickling, comprising a conveyor belt for conveying chicken and a rotating group for perforating the chicken, wherein the shape of the middle area of ​​the working surface of the conveyor belt is an arc that matches the rotating group;

[0006] The rotating group includes two side discs distributed front and back, and the lower side of the outer wall of the side disc is squeezed into the arc area of ​​the conveyor belt. When the conveyor belt is conveying, the conveyor belt drives the side disc to rotate. A plurality of needle groups are arranged between the two side discs. The plurality of needle groups are annularly distributed around the axis of the side disc. The needle group includes a movable seat that can move in the radial direction of the side disc, and a plurality of threading needles are provided on the movable seat.

[0007] When the chicken is conveyed between the two side plates, the movable seat moves in a direction away from the axis of the side plates and allows the piercing needle to penetrate the chicken. When the chicken is pierced, the movable seat is reset and the piercing needle is separated from the chicken.

[0008] Furthermore, the rotating group also includes a pressure plate that can move in the same direction as the movable seat. The pressure plate and the movable seat are connected by a leaf spring. The pressure plate is used to press the chicken and moves within a specified stroke. The needle slides through the pressure plate.

[0009] Furthermore, the end of the needle threader is provided with two receiving grooves, the two receiving grooves are on both sides of the needle threader axis, a side knife is rotatably provided in the receiving groove, and the side knife is connected to the receiving groove by a spring piece;

[0010] Among them, in the natural state, the angle between the side knife and the threading needle is directed away from the axis of the side disc.

[0011] Furthermore, the interior of the threading needle is hollow, and the outer wall of the threading needle is densely covered with exhaust holes.

[0012] Furthermore, it also includes a hollow shaft, which is coaxial with the side disc, and the side disc is rotatably mounted on the hollow shaft. A deflection wheel is fixed in the middle of the hollow shaft, and the outer wall of the deflection wheel is composed of an arc surface and a plane, and the center of the arc surface coincides with the axis of the hollow shaft. Each of the movable seats is provided with a roller, and the roller moves on the outer wall of the deflection wheel. When the roller moves on the arc surface part of the deflection wheel, the needle is in a punching working state, and when the roller moves on the plane part of the deflection wheel, the needle is in an idle state.

[0013] Furthermore, the hollow shaft is hollow, and an air inlet pipe is connected to the end of the hollow shaft. An air guide groove is sleeved on the hollow shaft, and the air guide groove is connected to the interior of the hollow shaft through a plurality of air guide holes. A plurality of connecting pipes are provided on the air guide groove. The interior of the movable seat is hollow, and the threading needle is connected to the connecting pipe through the movable seat.

[0014] Among them, when the side disc rotates, the moving seat pulls the air guide groove to rotate through the connecting pipe, and the hollow shaft and the air guide groove remain connected through the air guide hole.

[0015] Furthermore, the opening of the air guide circular groove faces the side wall of the deflector, and the side wall of the deflector blocks the opening of the air guide circular groove. A sealing plate is provided on the side wall of the deflector inside the air guide circular groove, and the sealing plate blocks the connecting pipe in the area covered by it.

[0016] Furthermore, it also includes a U-shaped frame, a hollow shaft is fixed on the U-shaped frame, the conveyor belt and the rotating group are both located inside the U-shaped frame, a first transmission wheel is provided on the left and right sides of the rotating group, a second transmission wheel is horizontally provided on the outer sides of the two first transmission wheels, and a third transmission wheel is provided on the lower side of the interior of the U-shaped frame, wherein the first transmission wheel, the second transmission wheel and the third transmission wheel all rotate in the U-shaped frame, the conveyor belt is transmitted on the first transmission wheel, the second transmission wheel and the third transmission wheel, the part of the conveyor belt between the first transmission wheel and the second transmission wheel on the same side of the rotating group is horizontal, the part of the conveyor belt between the two first transmission wheels is arc-shaped, and a motor for driving the third transmission wheel is provided on the U-shaped frame.

[0017] The advantages of the present invention are:

[0018] By automatically perforating the chicken during transportation, the perforation operation can be made simpler and more automated, thereby improving the continuity of the chicken perforation work and thus improving work efficiency. In addition, this operation method can effectively avoid harm to workers and improve safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure of the medium U-shaped frame;

[0022] Figure 3 yes Figure 2 Schematic diagram of the cross-section and enlarged structure of the middle rotation group;

[0023] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure of the middle needle group;

[0024] Figure 5 yes Figure 3 Schematic diagram of the enlarged structure of the middle eccentric wheel;

[0025] Figure 6 yes Figure 5 Schematic diagram of the cross-sectional structure of the central gas guide groove;

[0026] Figure numerals: 1. Conveyor belt; 2. Rotating group; 3. Side disc; 4. Moving seat; 5. Threading needle; 6. Pressure plate; 7. Leaf spring; 8. Side knife; 9. Exhaust hole; 10. Hollow shaft; 11. Deflection wheel; 12. Roller; 13. Air guide groove; 14. Air guide hole; 15. Connecting pipe; 16. Closing plate; 17. U-shaped frame; 18. First transmission wheel; 19. Second transmission wheel; 20. Third transmission wheel; 21. Motor; 22. Inlet pipe. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside” are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integrated connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances. This embodiment is written in a progressive manner.

[0030] like Figures 1 to 6 As shown, a perforating machine for pre-treating chicken marinated in the present invention comprises a conveyor belt 1 for conveying chicken and a rotating group 2 for perforating the chicken, wherein the shape of the middle area of ​​the working surface of the conveyor belt 1 is an arc shape that matches the rotating group 2;

[0031] The rotating group 2 includes two side discs 3 distributed front and back. The lower side of the outer wall of the side disc 3 is squeezed into the arc area of ​​the conveyor belt 1. When the conveyor belt 1 is conveying, the conveyor belt 1 drives the side disc 3 to rotate. Multiple groups of needles are arranged between the two side discs 3. The multiple groups of needles are distributed in a ring around the axis of the side disc 3. The needle group includes a movable seat 4 that can move in the radial direction of the side disc 3. The movable seat 4 is provided with multiple threading needles 5;

[0032] When the chicken is transported between the two side plates 3, the movable seat 4 moves in a direction away from the axis of the side plates 3 and allows the piercing needle 5 to penetrate the chicken. When the chicken is pierced, the movable seat 4 is reset and the piercing needle 5 is separated from the chicken.

[0033] In detail, the chicken is transported through the upper surface of the conveyor belt 1, and the upper surface of the conveyor belt 1 serves as a working surface, wherein the central area is an arc that matches the outer circumferential wall of the side disc 3, that is, the lower side of the side disc 3 squeezes the conveyor belt 1 and forms an arc shape, so that when the conveyor belt 1 is running, it can actively drive the side disc 3 to rotate, thereby driving the multiple needle groups between the two side discs 3 to perform circular motion around the axis of the side disc 3. When the chicken is perforated, the chicken is transported from the left side of the upper surface of the conveyor belt 1 toward the rotating group 2. When the chicken is transported between the two side discs 3, the chicken enters the arc area of ​​the conveyor belt 1, and at this time the moving seat 4 is facing away from the axis of the side disc 3. The movable seat 4 drives the multiple threading needles 5 thereon to move synchronously, and the threading needles 5 move toward the chicken and are inserted into the chicken, so that the chicken is perforated. Moreover, since the needle group, the side plate 3 and the conveyor belt 1 move synchronously, the chicken moves synchronously in the arc area of ​​the conveyor belt 1. When the chicken moves from the left side to the right side of the arc area, the perforation of the chicken is completed. At this time, the movable seat 4 moves in the opposite direction and resets on the side plate 3. The movable seat 4 drives the threading needle 5 to pull out the chicken. The chicken is conveyed to the right side of the upper surface of the conveyor belt 1 following the conveyor belt 1. As the conveyor belt 1 continuously conveys the chicken, continuous and automatic perforation of the chicken is achieved.

[0034] By automatically perforating the chicken during transportation, the perforation operation can be made simpler and more automated, thereby improving the continuity of the chicken perforation work and thus improving work efficiency. In addition, this operation method can effectively avoid harm to workers and improve safety.

[0035] Furthermore, the rotating group 2 also includes a pressure plate 6 that can move in the same direction as the movable seat 4. The pressure plate 6 is connected to the movable seat 4 by a leaf spring 7. The pressure plate 6 is used to press the chicken and the pressure plate 6 moves within a specified stroke. The needle 5 slides through the pressure plate 6.

[0036] In detail, a slide groove for installing the pressure plate 6 is provided on the side wall of the side plate 3. The slide groove is along the radial direction of the side plate 3, and the pressure plate 6 slides within the range of the slide groove. Due to the action of the leaf spring 7, in the natural state, the pressure plate 6 is located at the end of the slide groove away from the axis of the side plate 3. When the chicken moves between the two side plates 3, the pressure plate 6 contacts the chicken, and the pressure plate 6 presses the chicken so that the chicken moves synchronously with the side plates 3. In this way, the chicken can maintain a stable moving state during the perforation process, and it is convenient to flatten the chicken so that more holes can be inserted into it.

[0037] When the chicken is pierced, the end of the needle 5 contacts the chicken, and the pressure plate 6 presses the chicken. At this time, due to the reaction of the chicken to the pressure plate 6, the pressure plate 6 can slide on the side plate 3, and the leaf spring 7 undergoes elastic deformation. The pressure plate 6 and leaf spring 7 of this structure can effectively press and fix chicken of different thicknesses. When the chicken is pierced, the needle 5 is pulled out of the chicken. At this time, the pressure plate 6 keeps pressing the chicken to facilitate the removal of the needle 5. When the chicken moves to the right side of the curved part of the conveyor belt 1, with the help of the pushing effect of the pressure plate 6 on the chicken, the chicken can smoothly move from the curved part of the conveyor belt 1 to the horizontal part on the right side of the conveyor belt 1, thereby realizing a smooth transition of the chicken between different areas on the conveyor belt 1, and avoiding the chicken being stuck on the right side of the curved part of the conveyor belt 1 and unable to move to the horizontal part on the right side of the conveyor belt 1.

[0038] Furthermore, the end of the threading needle 5 is provided with two receiving grooves, which are on both sides of the axis of the threading needle 5. A side knife 8 is rotatably provided in the receiving groove, and the side knife 8 is connected to the receiving groove by a spring piece.

[0039] Among them, in the natural state, the angle between the side knife 8 and the threading needle 5 is directed away from the axis of the side disc 3.

[0040] In detail, due to the action of the shrapnel, the side knife 8 opens and tilts to the outside of the piercing needle 5. At this time, the angle between the piercing needle 5 and the side knife 8 is toward the direction of the chicken. When piercing the chicken, the piercing needle 5 and the side knife 8 thereon are inserted into the chicken at the same time. In this way, with the help of the side knife 8, larger holes can be opened on the chicken without breaking the chicken, so as to facilitate the entry of marinade.

[0041] Due to the setting of the direction of the side knife 8, when the needle 5 and the side knife 8 are inserted into the chicken, the side knife 8 can cut the chicken. When the needle 5 is pulled out of the chicken, the side knife 8 is smoothly stored in the storage groove due to the action of the chicken. This makes it convenient to pull out the needle 5, and at the same time, when the end of the needle 5 is moved into the pressing plate 6, the side knife 8 can also smoothly enter the pressing plate 6.

[0042] Furthermore, the interior of the piercing needle 5 is hollow, and the outer wall of the piercing needle 5 is densely covered with exhaust holes 9.

[0043] In detail, when the needle 5 pierces the chicken, the air inside the needle 5 can be discharged into the holes on the chicken through multiple exhaust holes 9, which makes it convenient for the air to fill the holes on the chicken, thereby facilitating the subsequent pigment to enter the holes.

[0044] Furthermore, it also includes a hollow shaft 10, which is coaxial with the side disc 3. The side disc 3 is rotatably mounted on the hollow shaft 10. A deflector 11 is fixed to the middle of the hollow shaft 10. The outer wall of the deflector 11 is composed of an arc surface and a plane, and the center of the arc surface coincides with the axis of the hollow shaft 10. Each of the movable seats 4 is provided with a roller 12, and the roller 12 moves on the outer wall of the deflector 11. When the roller 12 moves on the arc surface part of the deflector 11, the needle 5 is in the perforating working state. When the roller 12 moves on the plane part of the deflector 11, the needle 5 is in an idle state.

[0045] In detail, the hollow shaft 10 is used to support the side plate 3, the right area of ​​the deflection wheel 11 is set as a plane, and the remaining area is set as an arc surface. Due to the action of the leaf spring 7, the movable seat 4 can push the roller 12 to always fit the outer wall of the deflection wheel 11, so that when the side plate 3 rotates, it can drive the roller 12 to roll on the outer wall of the deflection wheel 11, that is, the moving trajectory of the roller 12 is the shape of the outer wall of the deflection wheel 11. When the roller 12 moves to the flat area on the right side of the deflection wheel 11, the distance between the roller 12 and the axis of the hollow shaft 10 is shortened. At this time, the needle 5 is pulled out of the chicken and the chicken is pierced. The work is completed. When the roller 12 moves on the arc-shaped part on the deflector 11, the distance between the roller 12 and the axis of the hollow shaft 10 is the maximum and the value is constant. At this time, the needle 5 is in working state, that is, the distance between the needle 5 and the axis of the hollow shaft 10 is the maximum. When the needle 5 moves to the left side of the arc-shaped part of the conveyor belt 1, the end of the needle 5 can contact the chicken and carry the chicken into between the two side plates 3. At the same time, the needle 5 is smoothly squeezed and inserted into the chicken. Therefore, the position of the needle 5 can be automatically controlled by the deflector 11, the roller 12 and the leaf spring 7.

[0046] With the help of the leaf spring 7, it can not only generate elastic force on the pressing plate 6 so that the pressing plate 6 squeezes the chicken, but also generate thrust on the movable seat 4 so that the roller 12 and the deflector 11 maintain a fitting state.

[0047] Furthermore, the hollow shaft 10 is hollow, and the end of the hollow shaft 10 is connected to the air inlet pipe 22. The hollow shaft 10 is provided with an air guide groove 13. The air guide groove 13 is connected to the interior of the hollow shaft 10 through a plurality of air guide holes 14. The air guide groove 13 is provided with a plurality of connecting pipes 15. The movable seat 4 is hollow inside, and the threading needle 5 is connected to the connecting pipe 15 through the movable seat 4.

[0048] When the side plate 3 rotates, the movable seat 4 pulls the air guide groove 13 to rotate through the connecting tube 15 , and the hollow shaft 10 and the air guide groove 13 remain in communication through the air guide hole 14 .

[0049] In detail, the outside air can be pumped into the hollow shaft 10 through the air inlet pipe 22, and the air in the hollow shaft 10 can be replenished into the piercing needle 5 through the air guide hole 14, the air guide groove 13, the connecting tube 15 and the movable seat 4, so that the piercing needle 5 can discharge gas while piercing. Since the side plate 3 needs to rotate, in order to ensure the normal supply of gas, it is necessary to rely on the rotation of the air guide groove 13 on the hollow shaft 10, that is, the side plate 3 pulls the air guide groove 13 to rotate on the hollow shaft 10 through the movable seat 4 and the connecting tube 15. At this time, the air guide groove 13 and the hollow shaft 10 can maintain a connected state through the air guide hole 14, thereby realizing a continuous supply of gas.

[0050] Furthermore, the opening of the air guide groove 13 faces the side wall of the deflector 11, and the side wall of the deflector 11 blocks the opening of the air guide groove 13. A sealing plate 16 is provided on the side wall of the deflector 11 inside the air guide groove 13, and the sealing plate 16 blocks the connecting pipe 15 in the area covered by it.

[0051] In detail, the air guide groove 13 is rotatably mounted on the hollow shaft 10, the opening of the air guide groove 13 faces the side wall of the deflector 11, and the air guide groove 13 rotates relative to the deflector 11, the side wall of the deflector 11 blocks the opening of the air guide groove 13, the sealing plate 16 is located on the upper side of the inside of the air guide groove 13, and the sealing plate 16 blocks part of the connecting pipe 15 on the upper side of the inside of the air guide groove 13, so that air can only be supplied to the connecting pipe 15 in the middle and lower parts of the air guide groove 13, so that air is conveniently supplied only to the threading needle 5 in the working area, thereby increasing the air pressure when the threading needle 5 is inflated and reducing gas waste.

[0052] Furthermore, it also includes a U-shaped frame 17, the hollow shaft 10 is fixed on the U-shaped frame 17, the conveyor belt 1 and the rotating group 2 are both located inside the U-shaped frame 17, and a first transmission wheel 18 is provided on the left and right sides of the rotating group 2, and a second transmission wheel 19 is horizontally provided on the outer side of the two first transmission wheels 18, and a third transmission wheel 20 is provided on the lower side of the inside of the U-shaped frame 17, wherein the first transmission wheel 18, the second transmission wheel 19 and the third transmission wheel 20 all rotate in the U-shaped frame 17, and the conveyor belt 1 is transmitted on the first transmission wheel 18, the second transmission wheel 19 and the third transmission wheel 20, and the portion of the conveyor belt 1 between the first transmission wheel 18 and the second transmission wheel 19 on the same side of the rotating group 2 is horizontal, and the portion of the conveyor belt 1 between the two first transmission wheels 18 is arc-shaped, and a motor 21 for driving the third transmission wheel 20 is provided on the U-shaped frame 17.

[0053] In detail, the U-shaped frame 17 provides support for the hollow shaft 10, the first transmission wheel 18, the second transmission wheel 19 and the third transmission wheel 20 provide support for the conveyor belt 1, and shape the vertical form of the conveyor belt 1. The motor 21 can drive the first transmission wheel 18, the second transmission wheel 19, the third transmission wheel 20 and the conveyor belt 1 to move, thereby realizing the transportation of chicken.

[0054] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A perforator for pre-treatment of chicken marinated, characterized in that: It comprises a conveyor belt (1) for conveying chicken and a rotating group (2) for perforating the chicken, wherein the shape of the middle area of ​​the working surface of the conveyor belt (1) is an arc shape that matches the rotating group (2); The rotating group (2) includes two side discs (3) distributed front and back, the lower side of the circumferential outer wall of the side disc (3) is squeezed in the arc area of ​​the conveyor belt (1), and when the conveyor belt (1) is conveying, the conveyor belt (1) drives the side disc (3) to rotate, and multiple needle groups are provided between the two side discs (3), and the multiple needle groups are distributed in a ring shape around the axis of the side disc (3). The needle group includes a movable seat (4) that can move along the radial direction of the side disc (3), and a plurality of threading needles (5) are provided on the movable seat (4); When the chicken is transported between the two side plates (3), the movable seat (4) moves in a direction away from the axis of the side plates (3) and causes the piercing needle (5) to penetrate the chicken. When the piercing of the chicken is completed, the movable seat (4) is reset and the piercing needle (5) is separated from the chicken. The rotating group (2) further includes a pressing plate (6) capable of moving in the same direction as the movable seat (4), the pressing plate (6) and the movable seat (4) being connected via a leaf spring (7), the pressing plate (6) being used to press the chicken and the pressing plate (6) moving within a prescribed stroke, and the threading needle (5) slidingly passes through the pressing plate (6); The interior of the threading needle (5) is hollow, and the outer wall of the threading needle (5) is densely covered with exhaust holes (9); It also includes a hollow shaft (10), the hollow shaft (10) is coaxial with the side disc (3), the side disc (3) is rotatably mounted on the hollow shaft (10), a deflector (11) is fixed in the middle of the hollow shaft (10), the outer wall of the deflector (11) is composed of an arc surface and a plane, and the center of the arc surface coincides with the axis of the hollow shaft (10), each of the movable seats (4) is provided with a roller (12), the roller (12) moves on the outer wall of the deflector (11), when the roller (12) moves on the arc surface part of the deflector (11), the needle (5) is in a perforating working state, when the roller (12) moves on the plane part of the deflector (11), the needle (5) is in an idle state; The hollow shaft (10) is hollow, and the end of the hollow shaft (10) is connected to an air inlet pipe (22). The hollow shaft (10) is provided with an air guide groove (13). The air guide groove (13) is connected to the inside of the hollow shaft (10) through a plurality of air guide holes (14). The air guide groove (13) is provided with a plurality of connecting pipes (15). The movable seat (4) is hollow inside, and the threading needle (5) is connected to the connecting pipe (15) through the movable seat (4). When the side plate (3) rotates, the movable seat (4) pulls the air guide groove (13) to rotate via the connecting tube (15), and the hollow shaft (10) and the air guide groove (13) are kept in communication via the air guide hole (14); The opening of the air guide circular groove (13) faces the side wall of the deflector (11), and the side wall of the deflector (11) blocks the opening of the air guide circular groove (13). A sealing plate (16) is provided on the side wall of the deflector (11) inside the air guide circular groove (13), and the sealing plate (16) blocks the connecting pipe (15) in the area covered by the sealing plate (16).

2. The perforator for pre-treatment of chicken pickling according to claim 1 is characterized in that: The end of the threading needle (5) is provided with two receiving grooves, the two receiving grooves are on both sides of the axis of the threading needle (5), and a side knife (8) is rotatably provided in the receiving groove, and the side knife (8) is connected to the receiving groove by a spring piece; In the natural state, the angle between the side knife (8) and the threading needle (5) is directed away from the axis of the side disc (3).

3. The perforator for pre-treatment of chicken marinated according to claim 1 is characterized in that: The invention also includes a U-shaped frame (17), a hollow shaft (10) is fixed on the U-shaped frame (17), a conveyor belt (1) and a rotating group (2) are both located inside the U-shaped frame (17), a first transmission wheel (18) is provided on both the left and right sides of the rotating group (2), a second transmission wheel (19) is provided horizontally outside the two first transmission wheels (18), and a third transmission wheel (20) is provided on the lower side of the U-shaped frame (17), wherein the first transmission wheel (18), the second transmission wheel (19) and the third transmission wheel The wheels (20) all rotate in the U-shaped frame (17), and the conveyor belt (1) is driven on the first transmission wheel (18), the second transmission wheel (19) and the third transmission wheel (20). The portion of the conveyor belt (1) between the first transmission wheel (18) and the second transmission wheel (19) on the same side of the rotating group (2) is horizontal, and the portion of the conveyor belt (1) between the two first transmission wheels (18) is arc-shaped. A motor (21) for driving the third transmission wheel (20) is provided on the U-shaped frame (17).

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