阅读说明：本技术 翅中在线预切装置及翅中分切方法 (On-line wing middle pre-cutting device and wing middle cutting method ) 是由 袁本华 于 2021-08-27 设计创作，主要内容包括：本发明公开了一种翅中在线预切装置及翅中分切方法。所述翅中在线预切装置包括机架及对称安装于所述机架上的左侧翅中预切机构和右侧翅中预切机构,所述左侧翅中预切机构对在线输送中的待分切家禽的左侧翅中部位进行预切,所述右侧翅中预切机构对在线输送中的待分切家禽的右侧翅中部位进行预切。本发明的翅中在线预切装置结构设计巧妙合理,能够使在线输送中的待分切家禽自动准确进入卡位,确保切割效果一致；本发明创造性地提出先将翅中与翅根连接部处的皮肉预切开后,再将翅中与翅根中间关节处切断,避免了传统方式进行翅中和翅根分割时,有小块翅中肉连带在翅根上而造成的经济损失,大大提高了屠宰厂家经济效益。(The invention discloses an in-fin on-line pre-cutting device and an in-fin cutting method. The in-fin on-line pre-cutting device comprises a rack, a left in-fin pre-cutting mechanism and a right in-fin pre-cutting mechanism, wherein the left in-fin pre-cutting mechanism and the right in-fin pre-cutting mechanism are symmetrically arranged on the rack, the left in-fin pre-cutting mechanism pre-cuts the left middle fin part of poultry to be cut in on-line conveying, and the right in-fin pre-cutting mechanism pre-cuts the right middle fin part of the poultry to be cut in on-line conveying. The wing on-line pre-cutting device is ingenious and reasonable in structural design, and can enable poultry to be cut in on-line conveying to automatically and accurately enter a clamping position, so that the cutting effect is ensured to be consistent; the invention creatively proposes that the skin meat at the connecting part of the wing middle and the wing root is pre-cut, and then the middle joint of the wing middle and the wing root is cut off, thereby avoiding the economic loss caused by small pieces of wing middle meat being carried on the wing root when the wing middle and the wing root are cut off in the traditional mode, and greatly improving the economic benefit of slaughter manufacturers.)

1. The in-wing on-line pre-cutting device comprises a rack, and a left in-wing pre-cutting mechanism and a right in-wing pre-cutting mechanism which are symmetrically arranged on the rack, wherein the left in-wing pre-cutting mechanism pre-cuts the middle part of the left side wing of the poultry to be cut in on-line conveying, and the right in-wing pre-cutting mechanism pre-cuts the middle part of the right side wing of the poultry to be cut in on-line conveying; the method is characterized in that:

the left wing middle precutting mechanism comprises a poultry body left clamping rod, a left wing pressing rod, a left wing middle tensioning rod and a left wing middle precutting knife; a left wing root guiding and forcing gap is formed between the left wing forcing rod and a left clamping rod of the poultry body, and the left wing forcing rod and the left clamping rod of the poultry body are matched together to clamp a left wing root and force the left wing root to pass through the left wing root guiding and forcing gap; the left wing middle tensioning rod and the left wing pressing rod are matched together to tension skin and meat at the wing middle wing root connecting part of the left wing; the left wing middle precutting knife is fixedly arranged at the downstream of the tail end of the left wing approach rod;

the right wing middle precutting mechanism comprises a poultry body right side clamping rod, a right wing detritus rod, a right wing middle tensioning rod and a right wing middle precutting knife; a space for poultry to pass through is formed between the poultry right side clamping rod and the poultry left side clamping rod; a right wing root guiding and forcing gap is formed between the right wing forcing rod and a right clamping rod of the poultry body, and the right wing forcing rod and the right clamping rod of the poultry body are matched together to clamp a right wing root and force the right wing root to pass through the right wing root guiding and forcing gap; the right wing middle tensioning rod and the right wing pressing rod are matched together to tension skin and meat at the wing middle wing root connecting part of the right wing; the right wing middle precutting knife is fixedly arranged at the downstream position of the tail end of the right wing approach rod.

2. The in-wing in-line pre-cutting device of claim 1, wherein: the head ends of the poultry left side clamping rod and the poultry right side clamping rod are respectively bent outwards; the head ends of the left bird wing forcing rod and the right bird wing forcing rod are bent downwards respectively; the bird body left side supporting rod and the bird body right side supporting rod form a bird body leading-in part, the left side wing leading-in part is formed by the head ends of the bird body left side supporting rod and the left side wing forcing rod, and the right side wing leading-in part is formed by the head ends of the bird body right side supporting rod and the right side wing forcing rod.

3. The in-wing in-line pre-cutting device of claim 1, wherein: the frame includes the base and installs in crane on the base, the crane with be provided with lift guiding mechanism and lift actuating mechanism between the base.

4. In-wing in-line pre-cutting device according to claim 3, characterized in that: the poultry body left side supporting rod is installed on the left support, the poultry body right side supporting rod is installed on the right support.

5. The in-wing in-line pre-cutting device of claim 4, wherein: a left clamping rod adjusting mechanism is arranged between the left clamping rod of the poultry body and the left bracket; and a right clamping rod adjusting mechanism is arranged between the poultry body right side clamping rod and the right support.

6. In-wing in-line pre-cutting device according to claim 5, characterized in that: the left clamping rod adjusting mechanism comprises a left clamping rod adjusting plate fixedly connected with the left clamping rod of the poultry body, and an adjusting long hole is formed in the left clamping rod adjusting plate; the right side supporting rod adjusting mechanism comprises a right side supporting rod adjusting plate fixedly connected with the right side supporting rod of the poultry body, and an adjusting long hole is also formed in the right side supporting rod adjusting plate.

7. In-wing in-line pre-cutting device according to claim 3, characterized in that: the left bird wing forcing rod, the left wing middle tensioning rod and the left wing middle precutting knife are all arranged on the left support, and the right bird wing forcing rod, the right wing middle tensioning rod and the right wing middle precutting knife are all arranged on the right support; and a translation guide mechanism and a translation driving mechanism are arranged between the left support and the right support and the lifting frame.

8. The in-wing in-line pre-cutting device of claim 7, wherein: a left precutting knife angle adjusting mechanism is arranged between the left side wing middle precutting knife and the left support, and a right precutting knife angle adjusting mechanism is arranged between the right side wing middle precutting knife and the right support.

9. In-wing in-line pre-cutting device according to claim 8, characterized in that: the left precutting knife angle adjusting mechanism comprises an adjusting seat fixedly mounted on the left support, a limiting sleeve and an arc adjusting hole are arranged on the adjusting seat, a knife handle of the precutting knife in the left wing is rotatably mounted in the limiting sleeve, a swing arm is mounted at the tail end of the knife handle of the precutting knife in the left wing, and the other end of the swing arm is mounted in the arc adjusting hole through an adjusting pin.

10. The wing middle slitting method is characterized by comprising the following steps of:

s1, pre-cutting the skin and flesh at the joint of the wing middle and the wing root, wherein the pre-cutting method comprises the following steps:

s11, hanging the head and the chest of the poultry to be cut downwards, and moving at a constant speed through a hanging and transporting mechanism;

s12, when the poultry to be cut is conveyed to the wing middle on-line pre-cutting device, the connection parts of wing middle wing roots at two sides of the poultry to be cut just reach the pre-cutting knife position respectively under the guiding and clamping effects;

s13, as the poultry to be cut continuously moves forwards, the precutting knife accurately cuts the skin and meat at the wing root connecting part in the wing middle of the corresponding side;

s2, pre-cutting skin and flesh at the joint of the wing middle and the wing root, and then cutting off the middle joint of the wing middle and the wing root.

Technical Field

The invention belongs to the technical field of food processing, and particularly relates to a wing middle on-line pre-cutting device and a wing middle cutting method.

Background

The poultry meat is delicious, rich in protein, contains vitamins indispensable to human bodies and trace elements having important effects on human bodies, has large demand, and brings different purchasing demands to various parts of the poultry by families and enterprises along with the improvement of the quality of life. For example, the existing chicken wings and duck wings need to be sold by cutting the wing root, the wing middle and the wing tip.

At present, domestic slaughtering and processing enterprises are lack of special equipment for cutting four limbs of poultry, most of the enterprises can only cut the poultry manually, and the efficiency is low. Some enterprises in the market start to divide the chicken by using a full-wing cutting machine, but when the wing center and the wing root are divided, the wing root and the middle joint of the wing center are cut off, so that a small piece of meat (about 4g) which should be carried in the wing center is easily carried on the wing root. The market price in the wing is about 1.5-2 times of the price of the wing root, so that a great deal of value loss is caused every year, and the enterprise benefit is not favorably improved.

Disclosure of Invention

One of the technical problems to be solved by the invention is to provide the in-wing on-line pre-cutting device which is convenient to operate and use, can adapt to different poultry sources, and can avoid meat in the wing from being carried on the wing root when the wing is neutralized and the wing root is cut, thereby greatly improving the economic benefit.

In order to solve the technical problems, the technical scheme of the invention is as follows: the in-wing on-line pre-cutting device comprises a rack, and a left in-wing pre-cutting mechanism and a right in-wing pre-cutting mechanism which are symmetrically arranged on the rack, wherein the left in-wing pre-cutting mechanism pre-cuts the middle part of the left side wing of the poultry to be cut in on-line conveying, and the right in-wing pre-cutting mechanism pre-cuts the middle part of the right side wing of the poultry to be cut in on-line conveying;

the left wing middle precutting mechanism comprises a poultry body left clamping rod, a left wing pressing rod, a left wing middle tensioning rod and a left wing middle precutting knife; a left wing root guiding and forcing gap is formed between the left wing forcing rod and a left clamping rod of the poultry body, and the left wing forcing rod and the left clamping rod of the poultry body are matched together to clamp a left wing root and force the left wing root to pass through the left wing root guiding and forcing gap; the left wing middle tensioning rod and the left wing pressing rod are matched together to tension skin and meat at the wing middle wing root connecting part of the left wing; the left wing middle precutting knife is fixedly arranged at the downstream of the tail end of the left wing approach rod;

the right wing middle precutting mechanism comprises a poultry body right side clamping rod, a right wing detritus rod, a right wing middle tensioning rod and a right wing middle precutting knife; a space for poultry to pass through is formed between the poultry right side clamping rod and the poultry left side clamping rod; a right wing root guiding and forcing gap is formed between the right wing forcing rod and a right clamping rod of the poultry body, and the right wing forcing rod and the right clamping rod of the poultry body are matched together to clamp a right wing root and force the right wing root to pass through the right wing root guiding and forcing gap; the right wing middle tensioning rod and the right wing pressing rod are matched together to tension skin and meat at the wing middle wing root connecting part of the right wing; the right wing middle precutting knife is fixedly arranged at the downstream position of the tail end of the right wing approach rod.

As a preferred technical scheme, the head ends of the poultry body left side clamping rod and the poultry body right side clamping rod are respectively bent outwards; the head ends of the left bird wing forcing rod and the right bird wing forcing rod are bent downwards respectively; the bird body left side supporting rod and the bird body right side supporting rod form a bird body leading-in part, the left side wing leading-in part is formed by the head ends of the bird body left side supporting rod and the left side wing forcing rod, and the right side wing leading-in part is formed by the head ends of the bird body right side supporting rod and the right side wing forcing rod.

As a preferred technical scheme, the rack comprises a base and a lifting frame arranged on the base, and a lifting guide mechanism and a lifting driving mechanism are arranged between the lifting frame and the base.

As the preferred technical scheme, a left support and a right support are fixedly arranged on two sides of the lifting frame, a clamping rod on the left side of the poultry body is arranged on the left support, and a clamping rod on the right side of the poultry body is arranged on the right support.

As a preferred technical scheme, a left clamping rod adjusting mechanism is arranged between the left clamping rod of the poultry body and the left bracket; and a right clamping rod adjusting mechanism is arranged between the poultry body right side clamping rod and the right support.

As a preferred technical scheme, the left clamping rod adjusting mechanism comprises a left clamping rod adjusting plate fixedly connected with the left clamping rod of the poultry body, and an adjusting long hole is formed in the left clamping rod adjusting plate; the right side supporting rod adjusting mechanism comprises a right side supporting rod adjusting plate fixedly connected with the right side supporting rod of the poultry body, and an adjusting long hole is also formed in the right side supporting rod adjusting plate.

As a preferable technical scheme, the lifting frame is provided with a left support and a right support which are arranged oppositely in a sliding manner, the left bird wing forcing rod, the left wing middle tensioning rod and the left wing middle precutting knife are all arranged on the left support, and the right bird wing forcing rod, the right wing middle tensioning rod and the right wing middle precutting knife are all arranged on the right support; and a translation guide mechanism and a translation driving mechanism are arranged between the left support and the right support and the lifting frame.

As a preferable technical scheme, a left precutting knife angle adjusting mechanism is arranged between the left side wing middle precutting knife and the left support, and a right precutting knife angle adjusting mechanism is arranged between the right side wing middle precutting knife and the right support.

As an optimized technical scheme, the left precutting knife angle adjusting mechanism comprises an adjusting seat fixedly mounted on the left support, a limiting sleeve and an arc-shaped adjusting hole are arranged on the adjusting seat, a knife handle of the precutting knife in the left wing is rotatably mounted in the limiting sleeve, a swing arm is mounted at the tail end of the knife handle of the precutting knife in the left wing, and the other end of the swing arm is mounted in the arc-shaped adjusting hole through an adjusting pin.

As a preferable technical scheme, a left cover shell is installed on the outer side of the precutting mechanism in the left wing, and a right cover shell is installed on the outer side of the precutting mechanism in the right wing.

The invention also provides a wing center slitting method capable of avoiding the wing center meat from being carried on the wing root when the wing center and the wing root are divided, which comprises the following steps:

s1, pre-cutting the skin and flesh at the joint of the wing middle and the wing root, wherein the pre-cutting method comprises the following steps:

s11, hanging the head and the chest of the poultry to be cut downwards, and moving at a constant speed through a hanging and transporting mechanism;

s12, when the poultry to be cut is conveyed to the wing middle on-line pre-cutting device, the connection parts of wing middle wing roots at two sides of the poultry to be cut just reach the pre-cutting knife position respectively under the guiding and clamping effects;

s13, as the poultry to be cut continuously moves forwards, the precutting knife accurately cuts the skin and meat at the wing root connecting part in the wing middle of the corresponding side;

s2, pre-cutting skin and flesh at the joint of the wing middle and the wing root, and then cutting off the middle joint of the wing middle and the wing root.

Due to the adoption of the technical scheme, the invention has at least the following beneficial effects:

(1) the left clamping rod and the right clamping rod of the poultry body guide and clamp cage effect to realize the restraint of the poultry body, the left wing root part clamping and limiting are realized through the guide and forcing effect of the left clamping rod and the left wing forcing rod of the poultry body, and the skin and meat at the wing root connecting part of the left wing are tensioned through the cooperation of the left wing middle tensioning rod and the left wing forcing rod, so that the wing middle wing root connecting part of the side can just reach the position of the left wing middle pre-cutter and can be smoothly cut by the pre-cutter; clamping and limiting the right wing root part through the guiding and forcing action of a clamping rod on the right side of the bird body and a right wing forcing rod, and tightening skin and meat at the wing root connecting part of the right wing through the matching of a right wing middle tensioning rod and the right wing forcing rod to ensure that the wing middle wing root connecting part on the side just reaches the position of a right wing middle precutting knife and is smoothly cut by the precutting knife; structural design is ingenious reasonable, makes and waits to cut the poultry and can accurately get into the screens automatically, ensures that the cutting effect is unanimous.

(2) Realize the adjustment of equipment height through the crane, realize the adjustment of equipment width through left socle and right branch frame relative movement, realize that the fin root direction forces the space adjustment through supporting rod adjustment mechanism, realize the precutting knife angular adjustment through precutting knife angular adjustment mechanism, can adapt to various chicken and duck birds sources, operation simple to use is convenient.

(3) The skin and flesh at the connecting part of the wing middle and the wing root are firstly pre-cut, and then the middle joint of the wing middle and the wing root is cut off, so that the economic loss caused by small pieces of wing middle flesh together with the wing root when the wing middle and the wing root are cut in the traditional mode is avoided, and the economic benefit of slaughter manufacturers is greatly improved.

Drawings

The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention.

Wherein:

FIG. 1 is a schematic perspective view of an embodiment of the present invention;

FIG. 2 is a schematic structural view in another direction of the embodiment of the present invention;

FIG. 3 is a schematic front view of an embodiment of the present invention;

FIG. 4 is a left side view of an embodiment of the present invention;

FIG. 5 is a schematic diagram of a right-view structure of an embodiment of the present invention;

FIG. 6 is a schematic top view of an embodiment of the present invention;

FIG. 7 is a schematic sectional view taken along the line A-A in FIG. 6;

fig. 8 is a reference view showing the state of each part of the poultry to be cut being guided and locked by the present invention.

Detailed Description

The invention is further illustrated below with reference to the figures and examples. In the following detailed description, certain exemplary embodiments of the present invention are described by way of illustration only. Needless to say, a person skilled in the art realizes that the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

As shown in fig. 1 to 8, the in-wing pre-cutting device includes a frame 100, wherein a left in-wing pre-cutting mechanism 200 and a right in-wing pre-cutting mechanism 300 are symmetrically installed on the frame 100, the left in-wing pre-cutting mechanism 200 pre-cuts the left mid-wing portion of the poultry 400 to be cut in an on-line conveying process, and the right in-wing pre-cutting mechanism 300 pre-cuts the right mid-wing portion of the poultry 400 to be cut in an on-line conveying process; the poultry 400 to be cut, such as chickens, ducks and the like after molting.

For convenience of description, with reference to fig. 8, the poultry 400 to be divided comprises the following defined zones: carcass 410, left side bird wing 420, right side bird wing 430; wherein the left bird wing 420 comprises a left wing root 421, a left wing middle 422, and a left wing tip; the right bird wing 430 includes a right wing root 431, a right wing middle 432, and a right wing tip (in this embodiment, the wing tip portion is cut away and not shown).

Referring to fig. 7 and 8, the left wing center pre-cutting mechanism 200 includes a carcass left gripper bar 210, a left wing approach bar 220, a left wing center tensioning bar 230, and a left wing center pre-cutter 240; a left wing root guiding and forcing gap 250 is formed between the left wing forcing rod 220 and the poultry body left clamping rod 210, the left wing forcing rod 220 and the poultry body left clamping rod 210 are matched together to clamp a left wing root 421 and force the left wing root 421 to pass through along the left wing root guiding and forcing gap 250; the left wing middle tensioning rod 230 is arranged obliquely below the outer side of the left wing forcing rod 220, and the left wing middle tensioning rod 230 exerts a certain upward pressing acting force on the bottom end of the left wing middle 422, so that the left wing middle tensioning rod is matched with the left wing forcing rod 220 to tension skin and meat at the wing middle wing root connecting part of the left wing 420, and pre-cutting is facilitated; the left wing middle precutting knife 240 is fixedly arranged at the downstream position of the tail end of the left wing forcing rod 220, and the tail end of the left side clamping rod 210 of the poultry body is slightly longer than the tail end of the left wing forcing rod 220, so that a certain guiding and limiting effect can be provided during and after precutting;

referring to fig. 4 and 8, the right wing pre-cut mechanism 300 includes a carcass right gripper bar 310, a right wing approximation bar 320, a right wing tensioning bar 330, and a right wing pre-cutter 340; a space D for the poultry body 410 to pass through is formed between the poultry body right side clamping rod 310 and the poultry body left side clamping rod 210; a right wing root guiding and forcing gap 350 is formed between the right wing forcing rod 320 and the bird body right side clamping rod 310, the right wing forcing rod 320 and the bird body right side clamping rod 310 are matched together to clamp a right wing root 431, and the right wing root 431 is forced to pass through the right wing root guiding and forcing gap 350; the right wing middle tensioning rod 330 is arranged obliquely below the outer side of the right wing forcing rod 320, and the right wing middle tensioning rod 330 exerts a certain upward pressing acting force on the bottom end of the right wing middle 432, so that the right wing middle tensioning rod 330 is matched with the right wing forcing rod 320 to tension skin and meat at the connecting part of the wing middle wing root of the right wing 430, and pre-cutting is facilitated; the right wing middle precutting knife 340 is fixedly arranged at the downstream position of the tail end of the right wing forcing rod 320, and similarly, the tail end of the right wing clamping rod 310 of the poultry body is slightly longer than the tail end of the right wing forcing rod 320, so that a certain guiding and limiting effect is provided during and after precutting.

Referring to fig. 1, in the present embodiment, the head ends of the poultry body left holding rod 210 and the poultry body right holding rod 310 are respectively bent outwards; the head ends of the left bird wing forcing rod 220 and the right bird wing forcing rod 320 are respectively bent downwards; thus, the head ends of the poultry body left side clamping rods 210 and the poultry body right side clamping rods 310 form a splayed poultry body leading-in part, the head ends of the poultry body left side clamping rods 210 and the left side poultry wing forcing rods 220 form a splayed left side poultry wing leading-in part, and the head ends of the poultry body right side clamping rods 310 and the right side poultry wing forcing rods 320 form a splayed right side poultry wing leading-in part, so that each poultry to be cut can accurately enter a clamping position.

Referring to fig. 1 and 2, in this embodiment, the rack 100 includes a base 110 and a lifting frame 120 installed on the base 110, a lifting guide mechanism 130 and a lifting driving mechanism 140 are disposed between the lifting frame 120 and the base 110, and the lifting frame 120 is driven by the lifting driving mechanism 140 to lift up and down, so as to adjust the height of the device; the lifting guide mechanism 130 and the lifting driving mechanism 140 may be implemented by conventional structures known in the art, and in this embodiment, the lifting driving mechanism 140 is illustrated by a lead screw, which is not described herein again.

Referring to fig. 1 and 4, in this embodiment, a left support 121 and a right support 122 are respectively fixedly installed at both sides of the lift frame 120, the carcass left side holding rod 210 is installed on the left support 121, and the carcass right side holding rod 310 is installed on the right support 122. A left clamping rod adjusting mechanism is arranged between the poultry body left clamping rod 210 and the left bracket 121; a right clamping rod adjusting mechanism is arranged between the poultry body right clamping rod 310 and the right bracket 122. The left clamping rod adjusting mechanism comprises a left clamping rod adjusting plate 211 fixedly connected with the left clamping rod 210 of the poultry body, an adjusting long hole 212 is formed in the left clamping rod adjusting plate 211, and the left clamping rod adjusting plate 211 is connected with the left bracket 121 through a bolt; right side supporting rod adjustment mechanism include with birds body right side supporting rod 310 fixed connection's right side supporting rod regulating plate 311, the regulation slot hole has also been seted up on the right side supporting rod regulating plate 311, and right side supporting rod regulating plate 311 passes through bolted connection with right branch frame 122, loosens the relative position that the bolt can adjust birds body left side supporting rod 210 and birds body right side supporting rod 310 to be applicable to different kinds or fat thin treating and cutting the poultry.

Referring to fig. 1, 4 and 7 again, the crane 120 is slidably mounted with a left support 123 and a right support 124 which are oppositely arranged, the left bird-wing detrusor rod 220, the left middle wing-wing tensioning rod 230 and the left middle wing-wing precutting knife 240 are all mounted on the left support 123, and the right bird-wing detrusor rod 320, the right middle wing-wing tensioning rod 330 and the right middle wing-wing precutting knife 340 are all mounted on the right support 124; a translation guide mechanism 150 and a translation driving mechanism 160 are arranged between the left support 123, the right support 124 and the lifting frame 120, the translation guide mechanism 150 preferably adopts the cooperation of an optical axis and a sliding block to realize guidance, the translation driving mechanism 160 preferably adopts a positive lead screw and a negative lead screw, and one end of the lead screw is provided with a handle which are all common equipment known in the art, and the specific structure is not repeated; the left support 123 and the right support 124 are driven by the translation driving mechanism 160 to synchronously move in opposite directions or move in opposite directions, so that the width of the equipment is adjusted, and the operation is simple and convenient.

Referring to fig. 1 and 5, a left pre-knife angle adjusting mechanism is disposed between the left middle-wing pre-knife 240 and the left support 123, and a right pre-knife angle adjusting mechanism is disposed between the right middle-wing pre-knife 340 and the right support 124. Left side precutting knife angle adjustment mechanism includes fixed mounting's adjusting seat 241 on the left branch seat 123, be provided with stop collar 242 and arc regulation hole 243 on the adjusting seat 241, the handle of a knife 240 in the left side wing rotate install in the stop collar 242, swing arm 244 is installed to the handle of a knife tail end of precutting knife 240 in the left side wing, the other end of swing arm 244 install through the adjusting pin in the arc regulation hole 243, the adjusting pin is connected with lock nut 245, loosens lock nut 245, and rotatory swing arm 244 can drive in the left side wing precutting knife 240 and rotate to adjustment edge of a knife cutting angle. The right precutting knife angle adjusting mechanism and the left precutting knife angle adjusting mechanism are the same in structure principle and are not repeated.

In order to improve the operation safety, the left housing 170 is installed on the outer side of the left wing middle precutting mechanism 200, and the right housing 180 is installed on the outer side of the right wing middle precutting mechanism 300.

Referring to fig. 8, the working principle and the precutting method of the present invention are as follows:

s11, hanging the head and the chest of the poultry 400 to be cut downwards, and moving at a constant speed through the hanging and transporting mechanism 500;

s12, when the poultry 400 to be cut is conveyed to the wing on-line pre-cutting device, the poultry 410 enters between the poultry left side clamping rod 210 and the poultry right side clamping rod 310 under the guiding action of the poultry left side clamping rod 210 and the poultry right side clamping rod 310 and is clamped by the poultry left side clamping rod 210 and the poultry right side clamping rod 310 to form a cage; the left bird wing 420 enters between the left clamping rod 210 and the left bird wing forcing rod 220 of the poultry body under the guiding action of the left clamping rod 210 and the left bird wing forcing rod 220 of the poultry body, and the part of the left wing root 421 is clamped by the left clamping rod 210 and the left bird wing forcing rod 220 of the poultry body; the right bird wing 430 enters between the bird body right side clamping rod 310 and the right bird wing forcing rod 320 under the guiding action of the bird body right side clamping rod 310 and the right bird wing forcing rod 320, and the part of the right wing root 431 is clamped by the bird body right side clamping rod 310 and the right bird wing forcing rod 320;

s13, as the poultry 400 to be cut continues to move forwards, the poultry body 410 inclines backwards slightly under the clamping cage action of the left clamping rod 210 and the right clamping rod 310 of the poultry body; the left wing root 421 passes through the left wing root guiding forcing gap 250 under the guiding forcing of the bird body left side clamping rod 210 and the left wing forcing rod 220, and simultaneously the left wing middle tensioning rod 230 and the left wing forcing rod 220 are matched together to tension the skin and the flesh at the wing middle wing root connecting part of the left wing 420, and the wing middle wing root connecting part of the side just reaches the position of the left wing middle precutting knife 240; the right wing root 431 passes through a guide forcing gap 350 along the right wing root under the guide forcing of the bird right side clamping rod 310 and the right wing forcing rod 320, and meanwhile, the right wing middle tensioning rod 330 and the right wing forcing rod 320 are matched together to tension skin and meat at the wing middle wing root connecting part of the right wing 431, and the wing middle wing root connecting part of the side just reaches the position of the right wing middle precutting knife 340;

s14, as the poultry 400 to be cut continues to move forward, the left wing middle pre-cutter 240 accurately pre-cuts the skin and meat at the connection part of the wing middle wing root; the right wing middle pre-cutter 340 accurately pre-cuts the skin and flesh at the connecting part of the wing middle wing root at the side;

the skin and flesh at the connecting part of the wing middle and the wing root are pre-cut and then enter the next procedure, the middle joint of the wing middle and the wing root is cut off, the wing middle cutting operation is realized, and the economic loss caused by small pieces of wing middle flesh which are carried on the wing root when the wing middle and the wing root are cut in the traditional mode is avoided.

According to the market quotation at present, taking chickens as an example, the chicken is 25 yuan/kg at the wing root, 40 yuan/kg at the wing middle, 15 yuan/kg at the middle price difference, 4g of meat is carried in each wing, and 2-8 g of each chicken; the method is characterized in that 10 ten thousand chickens are slaughtered every day in a medium-sized slaughtering and processing factory, the yield of each wing is increased by 800 kilograms of meat, the value produced every year is 800 × 15 × 365 ═ 438 ten thousand yuan, the economic benefit is considerable, and the method is suitable for wide popularization and application in the industry.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.