CN113598220B

CN113598220B - Chicken feet removes bone device completely

Info

Publication number: CN113598220B
Application number: CN202110622824.2A
Authority: CN
Inventors: 张春; 刘得雄
Original assignee: Southwest University
Current assignee: Southwest University
Priority date: 2021-06-04
Filing date: 2021-06-04
Publication date: 2022-04-12
Anticipated expiration: 2041-06-04
Also published as: CN113598220A

Abstract

A chicken claw complete boning device relates to food processing machinery, the main body part of which is composed of a lower plate and an upper plate, the chicken claw to be boned is arranged between the lower plate and the upper plate; the lower plate is provided with 5 clamping blocks for clamping toes of the chicken claw, and is also provided with 4 bone pushing device groups for pushing phalanges and large bones from the inside of the chicken claw to be separated from the upper skin incision; 4 skin cutting groups are provided on the upper plate for cutting the upper skin of the phalanges and the large bones from the upper parts of the chicken feet in the growth direction of each toe so that the phalanges and the large bones can be pulled out from the cuts; the clamping block, the bone pushing group and the skin cutting group are all part of a multi-connecting-rod radial movement mechanism which is respectively positioned on the lower plate and the upper plate, and the movement of the multi-connecting-rod radial movement mechanism is driven by a cylinder. The invention is used for removing bones from chicken feet, an operator can complete the whole chicken feet to cut skin and remove bones only by 3 simple actions of placing the chicken feet, starting the device by pressing a key and taking out the chicken feet, the operation is simple, the integrity of the chicken feet can be ensured, the invention is very safe, the cost is not high, and the invention has higher popularization and application values.

Description

Chicken feet removes bone device completely

Technical Field

The invention relates to a complete boneless chicken claw removing device, in particular to a boneless chicken claw suitable for batch production, and belongs to the technical field of food processing machinery.

Background

The chicken feet are food well enjoyed by the broad masses, and snacks made of the boneless chicken feet gradually turn red in the market in recent years. However, the bone and meat of the chicken feet are tightly combined and have a complex structure, so that the bone removal of the chicken feet is mainly performed artificially at present; although some designs claim to complete mechanical bone removal, most of the chicken feet have the defects and problems of troublesome clamping and bone removal operation, low efficiency caused by only removing big bones of the chicken feet or removing all bones one by one and the like. In the process of producing boneless chicken feet in a food factory, the nails of the chicken feet are generally cut off, then the raw chicken feet are cooked and then are rapidly immersed in ice water, and the main purpose is to separate chicken feet and bone meat by using expansion with heat and contraction with cold so as to facilitate manual boning of workers by using simple tools; the manual boning operation is troublesome, the skin of the phoenix paw is generally scratched from the upper part along the toes, then the phalanges and the large bones are sequentially scratched by a cutter, and the boning of 1 chicken paw is generally completed within 30-50 seconds for a skilled worker. If a device capable of automatically and completely removing bones of chicken feet at high speed only by simple operation of workers can be designed under the condition of reserving pre-processing technologies such as nail cutting, boiling, ice water soaking and the like, the bone and meat separation of the chicken feet can be realized by virtue of the advantages of the pretreatment technology of the chicken feet so as to ensure the effectiveness and reliability of bone removal of the device, and the human resource investment can be greatly reduced and the production efficiency can be improved in the production process of bone-free chicken feet.

Disclosure of Invention

The problems of low efficiency and high labor cost in the manual bone removing process of the chicken feet are solved; the invention provides a device capable of automatically and rapidly completing complete boning of chicken feet, which is used after raw chicken feet complete pretreatment processes such as nail cutting, cooking, ice water soaking and the like, workers only need to complete simple placing and taking actions of the chicken feet without complex clamping operation, and complete boning of the whole chicken feet can be completed within seconds after the device is started, so that the aims of improving efficiency, reducing technical requirements on the workers and reducing labor cost of production are fulfilled.

The invention is realized by the following technical scheme:

a complete bone removal device for chicken claws comprises a fan-shaped lower plate and a fan-shaped upper plate, wherein the lower plate and the upper plate are hinged by the upper plate and the lower plate and can rotate around the axis of the hinge of the upper plate and the lower plate so as to enable the upper plate to have at least two closed and opened positions relative to the lower plate, and when the upper plate and the lower plate are closed, the upper plate and the lower plate are parallel to each other and can keep a gap which is enough to accommodate the thickest part of the chicken claw; the upper plate is provided with a semi-cylindrical chicken claw clamping lug for clamping the chicken claw from the position of the large bone of the chicken claw close to the cut surface when the upper plate is closed relative to the lower plate; five clamping block track grooves with axes intersected at one point are formed in the front face of the lower plate, the shape of one side, close to the intersection point of the central axes of the clamping block track grooves, of each five clamping block track groove is in a pointed angle shape, five pointed angles form a boss basically consistent with the shape of the flat chicken claw, one clamping block can linearly move along the central axis of each clamping block track groove in each clamping block track groove, the shape of the head of each clamping block is the same as that of the pointed angle shape of one side of the corresponding clamping block track groove, the head of each clamping block in the pointed angle shape is large in the upper part and small in the lower part, the smaller part of the lower part of each clamping block is located in the clamping block track groove, an arc transition is formed between the larger part of the upper part and the smaller part of the lower part of each clamping block, and a clamping concave face which is just matched with the toe shape of the corresponding chicken claw is formed, and the motion range of each clamping block: one end of the clamping block rail groove is limited by the groove wall at the pointed side of the clamping block rail groove, and the other end of the clamping block rail groove is limited by a corresponding clamping block limiting plate positioned in the middle of the clamping block rail groove; five lower slide rail grooves are formed in the back face of the lower plate, the axes of the five lower slide rail grooves are respectively aligned with the central axis of each clamping block rail groove in the direction perpendicular to the lower plate, and a lower slide block group is arranged in each lower slide rail groove and can linearly move along the axis of the lower slide rail groove; the back of the lower plate is also provided with four lower connecting block track grooves, the axes of the four lower connecting block track grooves are intersected at one point, the intersection point of the point and the central axes of the five clamping block track grooves is overlapped in the direction vertical to the lower plate, the five lower connecting block track grooves and the four lower connecting block track grooves on the back of the lower plate are distributed at intervals, namely, the right side of one lower connecting block track groove is provided with one lower connecting block track groove, the right side of the other lower connecting block track groove is provided with one lower connecting block track groove, and the like, and one lower connecting block in each lower connecting block track groove can linearly move along the axes of the lower connecting block track grooves; the adjacent lower sliding block groups are connected with the lower connecting blocks through lower connecting rods with pin holes at two ends respectively, the connecting positions are respectively a lower sliding block connecting shaft positioned on the lower sliding block groups and a lower connecting block connecting shaft positioned on the lower connecting blocks, and two components at the connecting position of each pin hole can rotate relatively; the extension end of a lower cylinder piston rod of a lower cylinder connected to the lower plate is connected with a lower slider group positioned in the middle of the lower cylinder piston rod, the lower slider group positioned in the middle of the lower cylinder piston rod can be driven by the telescopic motion of the lower cylinder piston rod to do linear motion along the axis of the corresponding lower slider rail groove, and all the lower slider groups and the lower connecting blocks can simultaneously move or are opposite to each other along the respective rail axis in the direction close to the intersection point of the central axes of the five clamping block rail grooves; the main part of each lower sliding block group is a lower sliding block body which is a part matched with the rail surface of the lower sliding block rail groove, the tail part of the lower sliding block body is provided with a clamping block spring connecting plate which penetrates out of the back surface of the lower plate to the front surface of the lower plate and is fixedly connected with one end of a clamping block spring, the other end of each clamping block spring is fixedly connected with the tail part of the clamping block, so that each clamping block can be driven by the corresponding lower sliding block group through the clamping block spring to do linear motion along the corresponding clamping block rail groove, when the lower cylinder piston rod retracts to the limit position, the clamping block spring connecting plate of each lower sliding block group is limited by a lower sliding block limiting plate positioned at the tail part of the clamping block rail groove and cannot be separated from the rail, at the moment, the clamping block spring is in a pre-stretching state, and when the lower cylinder piston extends, each clamping block is driven to move to the direction of the central axis intersection point of the clamping block rail groove along the clamping block rail groove to one side of the sharp angle shape of the clamping block rail groove Until the groove wall, the clamping block can not move continuously in the same direction, and at the moment, the spring of the clamping block is in a compressed state but the piston rod of the lower cylinder does not reach the extended limit position;

the front surface of the upper plate is provided with five upper sliding block track grooves with crossed axes, when the upper plate is closed relative to the lower plate, the intersection point is superposed with the intersection points of the central axes of the five clamping block track grooves in the direction vertical to the upper plate, and an upper sliding block is arranged in each upper sliding block track groove and can do linear motion along the axis of the upper sliding block track groove; four bark cutting group track grooves with intersecting axes are also formed in the upper plate, the intersection points of the four bark cutting group track grooves coincide with the intersection points of the axes of the five upper slide block track grooves, and one bark cutting group in each bark cutting group track groove can do linear motion along the axis of the bark cutting group track groove; five upper sliding block track grooves and four bark cutting group track grooves on the upper plate are distributed at intervals, namely, the right side of one upper sliding block track groove is one bark cutting group track groove, and the right side is one upper sliding block track groove, and the rest can be done in the same way; the adjacent upper sliding blocks are connected with the skin cutting group through upper connecting rods with pin holes at two ends respectively, the connecting positions are respectively a connecting shaft positioned on the upper sliding blocks and a skin cutting group connecting shaft positioned on the skin cutting group, and two components at the connecting position of each pin hole can rotate relatively; the stretching end of an upper cylinder piston rod of an upper cylinder connected to the upper plate is connected with an upper sliding block positioned in the middle of the upper cylinder piston rod, the upper sliding block positioned in the middle of the upper cylinder piston rod can be driven by the telescopic motion of the upper cylinder piston rod to do linear motion along the axis of the corresponding upper sliding block track groove, and all the upper sliding blocks and the peeling groups can simultaneously move or oppositely move along the respective track axes to the direction close to the axis intersection point of the five upper sliding block track grooves under the drive of each upper connecting rod; each bark cutting group comprises a bark cutting group sliding block body which is used for matching with the rail surface of the bark cutting group rail groove, the front end of the bark cutting group sliding block body is provided with a strip-shaped bark cutting blade, the length direction of the spring is vertical to the surface of the upper plate, a spring of the peeling blade is arranged between the peeling blade and the sliding block body of the peeling group, the spring of the peeling blade is always in a stretching state, when the piston rod of the upper cylinder drives the skin cutting group to move towards the direction of the axis intersection point of the five upper slide block track grooves, the skin cutting blade cuts the upper skin of each toe of the chicken claw clamped between the upper plate and the lower plate and is pressed by the skin cutting blade to retract relative to the skin cutting group sliding block body along the axis of the skin cutting blade spring, and when the skin cutting group moves towards the direction far away from the intersection point of the axes of the five upper sliding block track grooves, the peeling blade stretches out downwards relative to the peeling group sliding block body along the axis of the peeling blade spring again under the action of the tension of the peeling blade spring;

the lower plate is provided with four bone pusher track grooves, the axes of the four bone pusher track grooves are respectively superposed with the axes of the four lower connecting block track grooves and are positioned on one side closer to the intersection point of the axes of the four lower connecting block track grooves, the bone pusher track grooves penetrate through the lower plate, the length direction of the bone pusher track grooves is just positioned in the middle of two opposite clamping concave surfaces of two adjacent clamping blocks, a bone pusher block of a bone pusher group is arranged in each bone pusher track groove, and the long-strip-shaped bone pusher block is always parallel to the lower plate and can do integral translational linear motion in the bone pusher guide rail grooves along the direction vertical to the lower plate; the bone pusher consists of a bone pusher mounting seat, a bone pusher lever, a bone pusher block and a bone pusher blade, wherein the bone pusher mounting seat and the bone pusher lever are connected in the middle of the bone pusher lever through a bone pusher lever hinge provided with a return spring and can relatively rotate around the bone pusher lever hinge, the middle part of the bone pusher block is provided with a bone pusher block hinge shaft which is inserted into a bone pusher kidney-shaped hole positioned at the end part of the bone pusher lever and can rotate in the kidney-shaped hole and slide along the length direction of the kidney-shaped hole, the bone pusher blade is vertically and fixedly connected on the bone pusher block, the bone pusher mounting seat is fixedly connected on the back surface of the lower plate, just leads the whole bone pusher block to be embedded into a bone pusher track groove in parallel with the lower plate, and the bone pusher lever is also parallel with the lower plate in a default state, one end of the bone pusher lever, which is not provided with the bone pusher kidney-shaped hole, is processed into an arc surface and is just positioned in the stroke range of the lower connecting block which linearly moves along the lower connecting block track groove, one end of the lower connecting block, which is close to the direction of the intersection point of the central axes of the five clamping block track grooves, is processed into an inclined plane; after the lower cylinder piston rod extends out to drive each clamping block to move to the groove wall on one side of the clamping block track groove in the shape of the pointed angle, the lower cylinder piston rod continues to extend out to enable each lower connecting block to further move towards the intersection point direction of the central axes of the five clamping block track grooves, so that the inclined surface on the lower connecting block is contacted with and gradually extrudes the arc surface on the bone pusher lever, the bone pusher lever rotates around the bone pusher lever hinge, one end of the waist-shaped hole of the bone pusher moves towards the inside of the bone pusher track groove, the bone pusher block positioned in the bone pusher track groove is driven by the bone pusher hinge shaft to move from the back to the front of the lower plate, and the bone pusher blade fixedly connected to the bone pusher block also moves from the back to the front of the lower plate along the direction perpendicular to the lower plate and finally extends out of a certain distance from the front of the lower plate.

The working principle of the scheme is as follows: an operator places the upper plate in a closed state relative to the lower plate, and inserts the soles of the chicken feet which are cooked in advance and cooled and have nails cut off into the upper plate and the lower plate, wherein the soles face the lower plate, the tails of the large bones of the chicken feet are clamped and fixed by the chicken feet clamping convex blocks and the lower plate, and the inserting direction of the chicken feet only needs to meet the condition that the central axes of three clamping block track grooves positioned in the middle are all in the range of the included angle between two corresponding adjacent toes; starting a lower cylinder to a first gear, so that a piston rod of the lower cylinder extends out to drive the five lower slide block groups and the four lower connecting blocks to move to an intersection point from one side far away from the intersection point of central axes of the five clamping block track grooves together until each clamping block spring connecting plate drives each clamping block to move to the intersection point direction to press each toe of the chicken claw through each clamping block spring originally in a stretching state, at the moment, each clamping block reaches one end limit stroke of the clamping block track groove and does not move any more, each clamping block spring is in a compression state, and the chicken claw is completely clamped under the combined action of the chicken claw clamping convex block and each clamping block; then, the upper air cylinder is started, so that the piston rod of the upper air cylinder extends out to drive the five upper sliding blocks and the four bark cutting groups to move together from one side far away from the intersection point of the axes of the five upper sliding block track grooves to the intersection point, in the process, each bark cutting blade just moves from the toe tip of each chicken claw to the joint of the toe bone and the big bone along the growth direction of the toe bone, wherein the movement stroke of the bark cutting blade aligned with the longest toe covers the whole process from the toe tip to the clamping position of the big bone of the chicken claw by the clamping lug of the chicken claw, if the toe part of each bark cutting blade has a concave blade arc surface from the movement terminal point to the starting point, a reasonable cutting front angle is formed when the bark cutting blade tip is contacted with the toe skin to cut the toe skin so as to ensure that the toe skin is cut smoothly, and the thickness of each toe flatly pressed on the lower plate is gradually increased from the toe tip to the back, therefore, the skin-cutting blade is gradually lifted upwards in the process, so that the spring of the skin-cutting blade is in a stretching state, and pressing force pointing to the inner direction of the toe skin is provided for the skin-cutting blade to ensure that the toe skin can be cut through at any time; then, the piston rod of the upper cylinder retracts, so that all the skin cutting groups move to the direction far away from the intersection point of the axes of the five upper sliding block track grooves to reset, and the skin cutting work of the upper parts of the phalanges and the large bones of the feet of the chicken feet is finished; then, the lower cylinder is started to a second gear, so that the piston rod of the lower cylinder continuously extends out, each lower connecting block further moves to one side close to the intersection point of the central axes of the five clamping block track grooves, the inclined plane at the end part of each lower connecting block is contacted and extruded with the arc surface at one end of the bone pusher lever arranged on the bone pusher group at the end part of each lower connecting block track groove, so that the bone pusher lever rotates around the bone pusher lever hinge, thus, the bone pusher hinge shaft in the bone pusher waist-shaped hole at the other end of the bone pusher lever moves along with the other end of the bone pusher lever to the front direction of the lower plate, further driving the bone pusher block fixedly connected with the bone pusher hinge shaft to move towards the front direction of the lower plate in the bone pusher track groove, namely to translate towards the lower part of the toe of the chicken claw, and during the movement, the top cutting edge of the bone pusher blade fixedly connected to the bone pusher block pierces the skin at the lower part of the toe from the skin and pushes the inner phalanges and big bones upwards, namely, moving to one side of the incision cut by the skin cutting blade until each phalange and big bone are pulled out of the chicken claw from the incision, wherein the width of the top edge of the bone pushing blade is equal to the thickness of the corresponding phalange or big bone but is narrower than the thickness of the corresponding toe or ankle; then, each detached phalange and big bone fall down from the gap between the upper plate and the lower plate under the action of gravity, and the lower cylinder drives the device on the lower plate to reset to prepare for next bone removal operation.

The invention has the beneficial effects that: when the chicken feet are put in, the chicken feet only need to be roughly aligned to the direction, the upper plate and the lower plate are pressed tightly, so that the chicken feet can be unfolded naturally, and the five clamping blocks can automatically adjust the incompletely aligned chicken feet in place; except that the chicken feet are placed in the device, an operator can complete the skin cutting and bone removing of the whole chicken feet only by operating the starting device once through a key and the like, then the upper plate and the lower plate are opened, and the chicken feet are taken down to complete the complete operation of one chicken foot; the width of the bone pushing blade can be trimmed aiming at different batches of chicken feet, so that the skin and the flesh of each toe are not broken after the bones of the chicken feet are removed in the same batch, and the integrity of the chicken feet is ensured; the whole device uses the cylinder as a power source, does not need electric power, and can avoid safety accidents caused by water inflow of a circuit cable in a deboning operation workshop; the device has low overall cost, simple and safe operation and higher popularization and application value.

Drawings

Figure 1 is a side view illustrating the insertion process of the chicken feet of the present invention;

figure 2 is a top view illustrating the insertion process of the chicken feet of the present invention;

FIG. 3 is a top view illustrating the lower plate and its ancillary structures of the present invention;

FIG. 4 is a bottom view illustrating the lower plate and its ancillary structure of the present invention;

FIG. 5 is a schematic diagram of a slider group;

figure 6 is a schematic view of the direction of movement of the clamping blocks clamping the chicken claws;

FIG. 7 is a schematic view of the lower connecting rod driving the lower slide block set and the clamping block moving along the lower slide block track groove under the driving of the lower cylinder piston rod in the process of clamping the chicken claw;

figure 8 is a schematic view of the clamping blocks clamping the chicken claw;

fig. 9 is a schematic view of the position of the clamping concave surface of the clamping jaw of the clamping block, wherein A-A is a partial cross-sectional view corresponding to the cross-sectional arrow A-A in fig. 8;

FIG. 10 is a schematic view of the back structure of the lower plate when the chicken feet are clamped;

FIG. 11 is a schematic view of the mounting of the skiving group on the front of the upper plate;

FIG. 12 is a schematic view of the position of the dermatome before the dermatome blade starts to cut skin, also a partial cross-sectional view corresponding to the cross-sectional arrow B-B in FIG. 11;

FIG. 13 is a schematic view of the construction of the dermatome group;

FIG. 14 is a top view of the track groove structure on the upper plate;

FIG. 15 is a bottom view of the track groove structure on the upper plate;

FIG. 16 is a schematic top view of the various mechanisms on the upper plate in motion during the cutting of the chicken feet;

FIG. 17 is a schematic view of the position of the dermatome blade at the time of skin incision, also a partial cross-sectional view corresponding to the cross-sectional arrow E-E in FIG. 16;

FIG. 18 is a schematic view of the mounting of the bone pusher set to the lower plate;

FIG. 19 is a schematic view of the bone pusher set in position prior to the start of bone pushing, also in partial cross-section corresponding to the cross-sectional arrow K-K in FIG. 18;

FIG. 20 is an enlarged view of the mounting of the bone pusher set to the lower plate prior to the initiation of bone pushing;

FIG. 21 is a schematic view showing the spring state of the clamping blocks on the front surface of the lower plate before the bone pushing group pushes the bone;

FIG. 22 is a structural view of a lower joint block;

FIG. 23 is a block diagram of the set of bone pushes;

FIG. 24 is a bottom view of the various mechanisms of the lower plate in motion with the bone pusher set completing bone pushing and removal;

FIG. 25 is a schematic view of the bone pusher set in a position to complete bone pushing and removal, and is also a partial cross-sectional view corresponding to the cross-sectional arrow H-H in FIG. 24;

FIG. 26 is a schematic enlarged view of the bone pusher set in position on the lower plate at the completion of bone pushing and removal;

FIG. 27 is a schematic view of the spring state of the clamping blocks on the front surface of the lower plate when the bone pusher set finishes pushing bones and removing bones;

FIG. 28 is a top view of the entire device in an open condition;

fig. 29 is a schematic view showing the entire structure of the present apparatus.

Labeled as: 0-chicken claw, 1-lower plate, 11-clamping block track groove, 110-clamping block track groove central axis, 112-bone pusher track groove, 113-lower block track groove, 114-lower connecting block track groove, 2-upper plate, 21-chicken claw clamping lug, 22-bark cutting group track groove, 23-upper sliding block track groove, 3-lower sliding block group, 31-lower sliding block body, 32-lower sliding block connecting shaft, 33-clamping block spring connecting plate, 4-lower connecting block, 41-inclined plane, 42-lower connecting block connecting shaft, 5-lower air cylinder, 51-lower air cylinder piston rod, 6-clamping block spring, 7-clamping block, 71-clamping concave surface, 8-lower connecting rod, 9-lower sliding block limiting plate, 10-clamping block limiting plate, 12-a skin cutting group, 121-a skin cutting group connecting shaft, 122-a skin cutting blade spring, 123-a skin cutting blade, 1231-a skin cutting knife tip, 124-a skin cutting group sliding block body, 13-an upper sliding block, 14-an upper connecting rod, 15-an upper air cylinder, 151-an upper air cylinder piston rod, 16-an upper plate hinge, 17-a bone pushing group, 171-a circular arc surface, 172-a bone pusher mounting seat, 173-a bone pusher lever hinge, 174-a bone pusher lever, 175-a bone pusher kidney-shaped hole, 176-a bone pushing block, 177-a bone pushing block hinge shaft and 178-a bone pushing blade.

Detailed Description

The invention will be further explained with reference to the drawings.

As shown in fig. 1, 2, 16 and 28, the present embodiment comprises a fan-shaped lower plate 1 and a fan-shaped upper plate 2, wherein the lower plate 1 and the upper plate 2 are connected by upper and lower plate hinges 16 and can rotate around the axis of the upper and lower plate hinges 16 so that the upper plate 2 has at least two positions of closing and opening relative to the lower plate 1 (the closed state is shown in fig. 16, and the open state is shown in fig. 28), and when the upper plate 2 and the lower plate 1 are closed, the upper plate 2 and the lower plate 1 are parallel to each other and can keep a gap which is enough to accommodate the thickest part of the chicken claw 0; the upper plate 2 is provided with semi-cylindrical chicken claw clamping lugs 21 for clamping the chicken claws from the large bones close to the cut surfaces of the chicken claws when the upper plate 2 is closed relative to the lower plate 1; as shown in fig. 3 to 7, five clamping block rail grooves 11 whose axes intersect at a point are formed in the front surface of the lower plate 1, the shapes of the five clamping block rail grooves 11 on the side close to the intersection point of the central axis 110 of the clamping block rail groove are pointed, the shape of a boss formed by five pointed angles is basically consistent with the shape of a flat chicken claw, one clamping block 7 is arranged in each clamping block rail groove 11 and can linearly move along the central axis 110 of the clamping block rail groove, and the shape of the head of each clamping block 7 is the same as the shape of the pointed angle on the side of the corresponding clamping block rail groove 11; as shown in fig. 8 and 9, the pointed head of each clamping block 7 is big at the top and small at the bottom, the smaller part of the lower part of the head is positioned in the rail groove 11 of the clamping block, the arc transition is made between the larger part of the upper part and the smaller part of the lower part to form a clamping concave surface 71 which is just matched with the shape of the corresponding toe of the phoenix paw, and the motion range of each clamping block 7 is as follows: one end of the clamping block rail groove 11 is limited by the groove wall at the pointed side, and the other end of the clamping block rail groove 11 is limited by the corresponding clamping block limiting plate 10 positioned in the middle of the clamping block rail groove 11; when the chicken claw 0 is manually placed at the position shown in fig. 1 and fig. 2, the chicken claw is naturally unfolded under the action of the lower plate 1 and the chicken claw clamping convex block 21, the placing operation does not need to completely align each toe to the position shown by the solid line outline of the chicken claw in fig. 2, but can slightly deviate each toe by a certain angle (shown by the dotted line outline of the chicken claw in fig. 2), as long as the deviation amount does not exceed the central axis 110 of the rail groove of the corresponding clamping block, so that the difficulty of manually operating the clamping of the chicken claw can be greatly simplified;

as shown in fig. 6 and 7, five lower slide rail grooves 113 are formed in the back surface of the lower plate 1, the axes of the five lower slide rail grooves are respectively aligned with the central axis 110 of each clamping block rail groove in the direction perpendicular to the lower plate 1, and one lower slide block group 3 in each lower slide rail groove 113 can linearly move along the axis of the lower slide rail groove 113; the back of the lower plate 1 is also provided with four lower connecting block track grooves 114, the axes of the four lower connecting block track grooves 114 are intersected at one point, the intersection point of the point and the central axes 110 of the five clamping block track grooves is overlapped in the direction vertical to the lower plate 1, the five lower connecting block track grooves 113 on the back of the lower plate 1 and the four lower connecting block track grooves 114 are distributed at intervals, namely, the right side of one lower connecting block track groove 113 is provided with one lower connecting block track groove 114, the right side is provided with one lower connecting block track groove 133, and the like; as shown in fig. 3 to 7, one lower link block 4 in each lower link block rail groove 114 is linearly movable along the lower link block rail groove axis; the adjacent lower sliding block group 3 and the lower connecting block 4 are connected by a lower connecting rod 8 with a pin hole at each end, the connection positions are a lower sliding block connecting shaft 32 positioned on the lower sliding block group 3 and a lower connecting block connecting shaft 42 positioned on the lower connecting block 4 (fig. 22), and two components at the connection position of each pin hole can rotate relatively; the extending end of the lower cylinder piston rod 51 of a lower cylinder 5 connected to the lower plate 1 is connected to a lower slide block group 3 located in the middle, the telescopic motion of the lower cylinder piston rod 51 can drive the lower slide block group 3 located in the middle to make a linear motion along the axis corresponding to the lower slide block track groove 113, and under the drive of each lower connecting rod 8, all the lower slide block groups 3 and the lower connecting blocks 4 can simultaneously move (as shown by arrows in fig. 6 and 7) or oppositely along the respective track axes towards the direction close to the intersection point of the five clamping block track groove central axes 110; the main body part of each lower slide block group 3 is a lower slide block body 31 which is a part matched with the rail surface of the lower slide block rail groove 113, the tail part of the lower slide block body 31 is provided with a clamping block spring connecting plate 33 which penetrates out of the back surface of the lower plate 1 to the front surface of the lower plate 1 and is fixedly connected with one end of a clamping block spring 6, the other end of each clamping block spring 6 is fixedly connected with the tail part of the clamping block 7, so that each clamping block 7 can be driven by the corresponding lower slide block group 3 through the clamping block spring 6 to do linear motion along the corresponding clamping block rail groove 11, when the lower cylinder piston rod 51 retracts to the limit position (figure 7), the clamping block spring connecting plate 33 of each lower slide block group is limited by the lower slide block limiting plate 9 positioned at the tail part of the clamping block rail groove 11 and cannot be separated from the rail, at the moment, the clamping block spring is in a pre-stretching state, and when the lower cylinder piston rod 51 stretches out, each clamping block 7 is driven to move towards the clamping block rail groove along the clamping block rail groove 11 The direction of the intersection point of the axis 110 moves to the groove wall on the one side of the clamping block rail groove 11 with the shape of the acute angle (fig. 8), the clamping block 7 can not move continuously to the same direction, and at the moment, the clamping block spring 6 is in a compressed state but the lower cylinder piston rod 51 does not reach the extending limit position;

as shown in fig. 11 to 15, the front surface of the upper plate 2 is provided with five upper slider rail grooves 23 with intersecting axes, when the upper plate 2 is closed relative to the lower plate 1, the intersection point coincides with the intersection point of the central axes 110 of the five clamping block rail grooves in the direction perpendicular to the upper plate 2, and an upper slider 13 is arranged in each upper slider rail groove 23 and can move linearly along the axis of the upper slider rail groove 23; four bark cutting group track grooves 22 with crossed axes are further formed in the upper plate 2, the crossed points of the four bark cutting group track grooves coincide with the crossed points of the axes of the five upper sliding block track grooves 23, and one bark cutting group 12 is arranged in each bark cutting group track groove 22 and can linearly move along the axes of the bark cutting group track grooves 22; five upper sliding block track grooves 23 on the upper plate 2 and four bark cutting group track grooves 22 are distributed at intervals, namely, the right side of one upper sliding block track groove 23 is one bark cutting group track groove 22, the right side is one upper sliding block track groove 23, and the rest is the same; the adjacent upper sliding block 13 and the bark cutting group 12 are connected by an upper connecting rod 14 with a pin hole at each end, the connecting positions are respectively a connecting shaft on the upper sliding block 13 and a bark cutting group connecting shaft 121 on the bark cutting group 12, and two components at the connecting position of each pin hole can rotate relatively; as shown in fig. 16 and 17, the extending end of the upper cylinder piston rod 151 of an upper cylinder 15 connected to the upper plate 2 is connected to an upper slider 13 located at the center, the telescopic movement of the upper cylinder piston rod 151 can drive the upper slider 13 located at the center to move linearly along the axis of the corresponding upper slider rail groove 23, and all the upper sliders 13 and the peeling groups 12 can simultaneously move or oppositely move along the respective rail axes toward the direction close to the intersection point of the axes of the five upper slider rail grooves 23 under the drive of the upper connecting rods 14; each of the peeling sets 12 includes a peeling set slider 124 for engaging with the rail surface of the peeling set rail groove 22, the peeling set slider 124 has a strip-shaped peeling blade 123 at the front end thereof, the length direction of the strip-shaped peeling blade 123 is perpendicular to the surface of the upper plate 2, a peeling blade spring 122 is mounted between the peeling blade 123 and the peeling set slider 124, the peeling blade spring 122 is always in a stretched state, when the upper cylinder piston rod 151 drives the peeling set 12 to move toward the direction of the intersection point of the axes of the five upper slider rail grooves 23, the peeling blade 123 cuts the upper skin of each toe of the phoenix paws clamped between the upper plate 2 and the lower plate 1 in the direction of the arrow in fig. 12 and is pressed by the upper skin to retract relative to the peeling set slider 124 along the axis of the peeling blade spring 122, and conversely, when the peeling set 12 moves toward the direction away from the intersection point of the axes of the five upper slider rail grooves 23, the peeling blade 123 slides relative to the peeling set along the axis of the peeling blade spring 122 under the tensile force of the peeling blade spring 122 Block 124 is again extended downwardly;

as shown in fig. 6, 7, 18 to 27, four bone pusher rail grooves 112 are formed on the lower plate 1, the axes of the four bone pusher rail grooves coincide with the axes of the four lower connecting block rail grooves 114 respectively and are located on one side closer to the intersection point of the axes of the four lower connecting block rail grooves 114, the bone pusher rail grooves 112 penetrate through the lower plate 1, the length direction of the bone pusher rail grooves 112 is just positioned between two opposite clamping concave surfaces 71 of two adjacent clamping blocks 7, when the chicken claw is clamped, the bone pusher rail grooves are just positioned just below each chicken claw toe, a bone pusher block 176 of a bone pusher group 17 is installed in each bone pusher rail groove, and the long bone pusher block 176 is always parallel to the lower plate 1 and can perform integral translational linear motion in the bone pusher rail grooves 112 along the direction perpendicular to the lower plate 1 (as shown by arrows in the partial sectional view of fig. 19); the bone pusher 17 comprises a bone pusher mounting seat 172, a bone pusher lever 174, a bone pusher block 176 and a bone pusher blade 178, wherein the bone pusher mounting seat 172 is connected with the bone pusher lever 174 by a bone pusher lever hinge 173 provided with a return spring in the middle of the bone pusher lever 174 and can rotate relatively around the bone pusher lever hinge 173, the bone pusher block 176 has a bone pusher block hinge shaft 177 in the middle thereof inserted into a bone pusher kidney-shaped hole 175 at the end of the bone pusher lever 174 and can rotate in the kidney-shaped hole and slide along the length direction of the kidney-shaped hole, the bone pusher blade 178 is vertically connected with the bone pusher block 176 and is directed toward the upper plate 2, the bone pusher mounting seat 172 is connected with the back of the lower plate 1 just enough to enable the bone pusher block 176 to be inserted into the bone pusher rail groove 112 in a whole body and parallel to the lower plate 1, and the bone pusher lever 174 is also parallel to the lower plate 1 in a default state, the end of the bone pusher lever 174 without the bone pusher 175 is machined into a kidney-shaped hole 171 and is located along the lower circular arc connecting block 4 just enough In the stroke range of the linear motion of the lower connecting block track groove 114, one end of the lower connecting block 4 close to the intersection point of the central axes 110 of the five clamping block track grooves is processed into an inclined surface 41; after the lower cylinder piston rod 51 extends out to drive each clamping block 7 to move to the groove wall at the pointed side of the clamping block rail groove 11, continued extension of the lower cylinder piston rod 51 will cause each lower connecting block 4 to move further in the direction of the intersection of the central axes 110 of the five clamping block rail grooves, so that the inclined surface 41 of the lower connecting block 4 contacts and gradually presses the arc surface 171 of the ejector lever 174, causing the ejector lever 174 to rotate about the ejector lever hinge 173 to move the end of the ejector kidney-shaped hole 175 inward of the ejector rail groove 112, and the bone pushing block 176 in the bone pushing device track groove 112 is driven by the bone pushing block hinge shaft 177 to move from the back to the front of the lower plate 1, and the bone pushing blade 178 fixed on the bone pushing block 176 will also move from the back to the front of the lower plate 1 in the direction perpendicular to the lower plate 1 and finally extend a distance from the front of the lower plate 1 (fig. 25 is a partial sectional view).

The working principle of the scheme is as follows: an operator places the upper plate 2 in a closed state (fig. 16) from an open state (fig. 28 and 29) relative to the lower plate 1, and inserts the soles of the chicken feet 0, which are cooked and cooled in advance and have nails cut off, between the upper plate 2 and the lower plate 1 towards the direction of the lower plate 1, and the tail parts of the big bones of the chicken feet are clamped and fixed by the chicken feet clamping convex blocks 21 and the lower plate 1 (fig. 1 and 2), wherein the inserting direction of the chicken feet 0 only needs to meet the condition that the central axes of the three clamping block track grooves positioned in the middle are all within the range of the included angle between the corresponding two adjacent toes (shown by the dotted line outline of the chicken feet in fig. 2); starting the lower cylinder 5 to a first gear, so that the lower cylinder piston rod 51 extends out to drive the five lower slide block groups and the four lower connecting blocks to move together from one side away from the intersection point of the central axes 110 of the five clamping block track grooves to the intersection point until each clamping block spring connecting plate 33 drives each clamping block 7 to move to the intersection point direction through each clamping block spring 6 originally in a stretching state (fig. 6 to fig. 10) to press each toe of the chicken claws 0 tightly, at this time, each clamping block 7 reaches the limit stroke of one end of each clamping block track groove and does not move any more, each clamping block spring 6 is in a compression state, and the chicken claws 0 are completely clamped under the combined action of the chicken claw clamping convex block 21 and each clamping block 7; then, the upper cylinder 15 is started, so that the upper cylinder piston rod 151 extends to drive the five upper sliders 13 and the four bark cutting sets 12 to move together from the side far away from the axis intersection point of the five upper slider rail grooves 23 to the intersection point, in the process, each bark cutting blade 123 just moves from each toe tip of the phoenix paw 0 to the junction of the phalanges and the big bone along the growth direction of the phalanges (fig. 12 and 17), wherein the movement stroke of the bark cutting blade aligned with the longest toe covers the whole distance from the toe tip to the clamping position of the phoenix paw big bone by the phoenix-paw clamping lug 21, if the movement end point of each bark cutting blade 123 is viewed to the starting point, the cutting tip part of each bark cutting blade 123 has a concave cambered surface to form a reasonable cutting 'front angle' when the bark cutting blade tip contacts with the toe skin to cut the smooth toe skin, since the thickness of each toe flatly pressed on the lower plate 1 gradually increases from the tip of the toe to the back, the dermatome blade will gradually lift upwards in the process, so that the dermatome blade spring 122 is in a stretching state to provide pressing force pointing to the inner direction of the toe skin to the dermatome blade 123 so as to ensure that the toe skin can be cut through at any time; then, the upper cylinder piston rod 151 retracts, so that all the skin cutting groups 12 move to the direction far away from the axis intersection point of the five upper sliding block track grooves 23 to reset, and the upper skin incision work of each phalange and large bone of the phoenix paw 0 is completed; subsequently, the lower cylinder 5 is started to the second gear position, so that the piston rod 51 of the lower cylinder continues to extend, and each lower connecting block 4 further moves to one side close to the intersection point of the central axes 110 of the five clamping block track grooves, as shown in fig. 18 to 27, the inclined surface 41 at the end of the lower connecting block contacts and presses with the arc surface 171 at one end of the bone pusher lever 174 mounted on the bone pusher group 17 at the end of the lower connecting block track groove 114, so that the bone pusher lever 174 rotates around the bone pusher lever hinge 173, so that the bone pusher hinge shaft 177 mounted in the bone pusher kidney-shaped hole 175 at the other end of the bone pusher lever 174 moves along with the other end of the bone pusher lever 174 in the front direction of the lower plate 1, and the bone pusher block 176 fixedly connected with the bone pusher hinge shaft 177 is driven to move in the front direction of the lower plate 1, i.e. to move in the lower part of the toe of the phoenix paw 0 in the bone pusher track groove 112, during this movement, the top edge of the push-bone blade 178 attached to the push-bone block 176 will pierce the skin of the lower part of the toe from the outside of the skin of the lower part of the toe and push the inner phalanges and big bones thereof upward, that is, toward the side of the incision cut by the skin-cutting blade 123 until the respective phalanges and big bones come out of the claw from the incision, the width of the top edge of the push-bone blade 178 being equivalent to the thickness of the corresponding phalanges or big bones but narrower than the thickness of the corresponding toe or ankle; then, each detached phalange and big bone fall down from the gap between the upper plate 2 and the lower plate 1 under the action of gravity, and the lower cylinder 5 drives the device on the lower plate to reset to prepare for next bone removal work.

Claims

1. A chicken claw completely bone removing device is characterized in that: the chicken claw assembly comprises a fan-shaped lower plate (1) and a fan-shaped upper plate (2), wherein the lower plate (1) and the upper plate (2) are connected by an upper plate hinge (16) and a lower plate hinge (16) and can rotate around the axis of the upper plate hinge (16) so that the upper plate (2) has at least two positions of closing and opening relative to the lower plate (1), and the upper plate (2) and the lower plate (1) are parallel to each other and can keep a gap which is enough to accommodate the thickest part of the chicken claw (0) between the upper plate and the lower plate when the upper plate and the lower plate are closed; the upper plate (2) is provided with semi-cylindrical chicken claw clamping lugs (21) for clamping the chicken claws from the large bones close to the cut surfaces of the chicken claws when the upper plate (2) is closed relative to the lower plate (1); five clamping block track grooves (11) with axes intersected at one point are formed in the front face of the lower plate (1), the shape of one side, close to the intersection point of the central axis (110) of each clamping block track groove (11), of each five clamping block track groove (11) is in a pointed angle shape, a boss which is basically consistent with the shape of a flat chicken claw is formed by the five pointed angles, one clamping block (7) can linearly move along the central axis (110) of each clamping block track groove (11), the shape of the head of each clamping block (7) is the same as that of the pointed angle shape of one side of the corresponding clamping block track groove (11), the head of each pointed angle shape of each clamping block (7) is large in upper part and small in lower part, the smaller part of the lower part of the head of each pointed angle shape is positioned in the clamping block track groove (11), and an arc transition is formed between the larger part of the upper part and the smaller part of the lower part of the head of each clamping block to form a clamping concave surface (71) which is just matched with the shape of the corresponding chicken claw toe, range of motion of each clamping block (7): one end of the clamping block rail groove is limited by the groove wall at the pointed side of the clamping block rail groove (11), and the other end of the clamping block rail groove is limited by a corresponding clamping block limiting plate (10) positioned in the middle of the clamping block rail groove (11); five lower slide block track grooves (113) are formed in the back of the lower plate (1), the axes of the five lower slide block track grooves are respectively aligned with the central axis (110) of each clamping block track groove in the direction perpendicular to the lower plate (1), and a lower slide block group (3) is arranged in each lower slide block track groove (113) and can linearly move along the axis of the lower slide block track groove (113); the back of the lower plate (1) is also provided with four lower connecting block track grooves (114), the axes of the four lower connecting block track grooves are intersected at one point, the intersection point of the point and the central axis (110) of the five clamping block track grooves is overlapped in the direction vertical to the lower plate (1), the five lower connecting block track grooves (113) and the four lower connecting block track grooves (114) on the back of the lower plate (1) are distributed at intervals, namely, the right side of one lower connecting block track groove (113) is provided with one lower connecting block track groove (114), the right side is provided with one lower connecting block track groove (113), and by analogy, one lower connecting block (4) in each lower connecting block track groove (114) can do linear motion along the axes of the lower connecting block track grooves; the adjacent lower sliding block groups (3) are connected with the lower connecting blocks (4) through lower connecting rods (8) with pin holes at two ends respectively, the connecting positions are a lower sliding block connecting shaft (32) positioned on the lower sliding block group (3) and a lower connecting block connecting shaft (42) positioned on the lower connecting blocks (4), and two components at the connecting position of each pin hole can rotate relatively; the extension end of a lower cylinder piston rod (51) of a lower cylinder (5) connected to the lower plate (1) is connected with a lower slide block group (3) positioned in the middle of the lower plate, the lower cylinder piston rod (51) can drive the lower slide block group (3) positioned in the middle of the lower plate to do linear motion along the axis of a corresponding lower slide block track groove (113), and all the lower slide block groups (3) and the lower connecting blocks (4) can simultaneously move or are opposite to each other along the respective track axes to the direction close to the intersection point of the five clamping block track groove central axes (110) under the drive of each lower connecting rod (8); the main part of each lower slide block group (3) is a lower slide block body (31) which is a part matched with the rail surface of the lower slide block rail groove (113), the tail part of the lower slide block body (31) is provided with a clamping block spring connecting plate (33) which penetrates out of the back surface of the lower plate (1) to the front surface of the lower plate (1) and is fixedly connected with one end of a clamping block spring (6), the other end of each clamping block spring (6) is fixedly connected with the tail part of the clamping block (7), so that each clamping block (7) can be driven by the corresponding lower slide block group (3) through the clamping block spring (6) to do linear motion along the corresponding clamping block rail groove (11), when the lower cylinder piston rod (51) retracts to the limit position, the clamping block spring connecting plate (33) of each lower slide block group is limited by a lower slide block limiting plate (9) positioned at the tail part of the clamping block rail groove (11) and can not be separated from the rail, at the moment, the clamping block springs are in a pre-stretched state, when the lower air cylinder piston rod (51) stretches out, each clamping block (7) is driven to move to the groove wall on one side of the clamping block rail groove (11) in the pointed angle shape along the clamping block rail groove (11) towards the direction of the central axis intersection point of the clamping block rail groove, the clamping blocks (7) cannot move in the same direction any more, and at the moment, the clamping block springs (6) are in a compressed state but the lower air cylinder piston rod (51) does not reach the stretching limit position yet;

the front surface of the upper plate (2) is provided with five upper sliding block track grooves (23) with crossed axes, when the upper plate (2) is closed relative to the lower plate (1), the crossed point is superposed with the crossed point of the central axes (110) of the five clamping block track grooves in the direction vertical to the upper plate (2), and an upper sliding block (13) is arranged in each upper sliding block track groove (23) and can do linear motion along the axes of the upper sliding block track grooves (23); four bark cutting group track grooves (22) with intersecting axes are further formed in the upper plate (2), the intersection points of the four bark cutting group track grooves coincide with the intersection points of the axes of the five upper sliding block track grooves (23), and a bark cutting group (12) capable of linearly moving along the axes of the bark cutting group track grooves (22) is arranged in each bark cutting group track groove (22); five upper sliding block track grooves (23) and four bark cutting group track grooves (22) on the upper plate (2) are distributed at intervals, namely, the right side of one upper sliding block track groove (23) is provided with one bark cutting group track groove (22), the right side is provided with one upper sliding block track groove (23), and the rest is done in the same way; the adjacent upper sliding blocks (13) and the bark cutting group (12) are connected through an upper connecting rod (14) with a pin hole at each end, the connecting positions are respectively a connecting shaft positioned on the upper sliding block (13) and a bark cutting group connecting shaft (121) positioned on the bark cutting group (12), and two members at the connecting position of each pin hole can rotate relatively; the extending end of an upper cylinder piston rod (151) of an upper cylinder (15) connected to the upper plate (2) is connected with an upper slide block (13) positioned in the middle of the upper cylinder piston rod, the telescopic motion of the upper cylinder piston rod (151) can drive the upper slide block (13) positioned in the middle of the upper cylinder piston rod to do linear motion along the axis of the corresponding upper slide block track groove (23), and all the upper slide blocks (13) and the peeling groups (12) can simultaneously move or are opposite to each other along the respective track axis in the direction close to the intersection point of the axes of the five upper slide block track grooves (23) under the drive of each upper connecting rod (14); each bark cutting group (12) comprises a bark cutting group sliding block body (124) which is used for being matched with the rail surface of the bark cutting group rail groove (22), the front end of the bark cutting group sliding block body (124) is provided with an elongated bark cutting blade (123), the length direction of the elongated bark cutting blade is vertical to the surface of the upper plate (2), a bark cutting blade spring (122) is arranged between the bark cutting blade (123) and the bark cutting group sliding block body (124), the bark cutting blade spring (122) is always in a stretching state, when an upper air cylinder piston rod (151) drives the bark cutting group (12) to move towards the direction of the axis intersection point of the five upper block rail grooves (23), the bark cutting blade (123) cuts the upper skin of each toe of the phoenix paws clamped between the upper plate (2) and the lower plate (1) and is pressed by the bark cutting group blade spring to retract relative to the bark cutting group sliding block body (124), conversely, when the bark cutting group (12) moves towards the direction far away from the axis point of the five upper block rail grooves (23), the peeling blade (123) extends downwards again relative to the peeling group sliding block body (124) along the axis of the peeling blade spring (122) under the tension of the peeling blade spring (122);

four bone pusher track grooves (112) are formed in the lower plate (1), the axes of the four bone pusher track grooves coincide with the axes of the four lower connecting block track grooves (114) respectively and are positioned on one side closer to the intersection point of the axes of the four lower connecting block track grooves (114), the bone pusher track grooves (112) penetrate through the lower plate (1), the length direction of the bone pusher track grooves is just positioned in the middle of two opposite clamping concave surfaces (71) of two adjacent clamping blocks (7), a bone pusher block (176) of a bone pusher group (17) is arranged in each bone pusher track groove, and the long-strip-shaped bone pusher blocks (176) are always parallel to the lower plate (1) and can perform integral translational linear motion in the bone pusher track grooves (112) along the direction vertical to the lower plate (1); the bone pushing set (17) consists of a bone pusher mounting seat (172), a bone pusher lever (174), a bone pusher block (176) and a bone pusher blade (178), wherein a bone pusher lever hinge (173) provided with a return spring is arranged between the bone pusher mounting seat (172) and the bone pusher lever (174) and is connected with the middle part of the bone pusher lever (174) and can rotate around the bone pusher lever hinge (173) relatively, a bone pusher block hinge shaft (177) is arranged in the middle part of the bone pusher block (176) and is inserted into a bone pusher kidney-shaped hole (175) positioned at the end part of the bone pusher lever (174) and can rotate in the bone pusher kidney-shaped hole and slide along the length direction of the kidney-shaped hole, the bone pusher blade (178) is vertically and fixedly connected to the bone pusher block (176), the bone pusher mounting seat (172) is fixedly connected to the back of the lower plate (1), so that the bone pusher block (176) is just embedded into the bone pusher rail groove (112) in parallel with the lower plate (1), and when the bone pushing device is in a default state, the bone pushing device lever (174) is also parallel to the lower plate (1), one end of the bone pushing device lever (174), which is not provided with the waist-shaped hole (175) of the bone pushing device, is processed into an arc surface (171) and is just positioned in the stroke range of the lower connecting block (4) which makes linear motion along the lower connecting block track groove (114), and one end of the lower connecting block (4) close to the intersection point of the central axes (110) of the five clamping block track grooves is processed into an inclined surface (41); after the lower cylinder piston rod (51) extends out to drive each clamping block (7) to move to the groove wall on one acute-angle side of the clamping block track groove (11), the lower cylinder piston rod (51) continues to extend out to enable each lower connecting block (4) to further move towards the intersection point direction of the central axes (110) of the five clamping block track grooves, so that the inclined surface (41) on the lower connecting block (4) is contacted with and gradually extrudes the arc surface (171) on the bone pusher lever (174), the bone pusher lever (174) rotates around the bone pusher lever hinge (173) to enable one end of the bone pusher waist-shaped hole (175) to move towards the inside of the bone pusher track groove (112), the bone pusher block (176) located in the bone pusher track groove (112) is driven to move from the back side to the front side of the lower plate (1) through the bone pusher hinge shaft (177), and the bone pusher blade (178) fixedly connected to the bone pusher block (176) also moves from the direction perpendicular to the lower plate (1) from the back side of the lower plate (1) (1) Moves in the front direction and finally protrudes a distance from the front side of the lower plate (1).