Automatic crayfish head removal device

Abstract

The present invention relates to the field of lobster processing, and discloses an automatic crayfish head removal device, which comprises a frame and a conveyor belt driven by the frame, the frame is sequentially provided with a material box and a mounting frame along the conveying direction of the conveyor belt, a discharging mechanism for driving the material box to swing back and forth is installed on the frame, a discharging port is provided at the bottom of the material box, a support piece corresponding to the discharging port is fixed on the conveyor belt, a cutting mechanism and a lifting mechanism for driving the cutting mechanism to lift and lower are installed on the mounting frame, the cutting mechanism comprises two symmetrically arranged cutters and a driving device for driving the two cutters to move relative to each other, a symmetrically arranged clamping plate is installed on the frame, a linkage mechanism is connected between the clamping plate and the lifting mechanism, clamping ports are provided on both sides of the support piece, and the lifting mechanism drives the clamping plate to move through the clamping port through the linkage mechanism. The present invention has the following advantages and effects: the shrimp head can be completely and efficiently removed, and the shrimp head and shrimp body are collected separately, which is convenient for subsequent processing.

Description

Technical Field

[0001] The invention relates to the technical field of lobster processing, in particular to an automatic crayfish head removal device. Background Art

[0002] With the rapid development of transportation, coastal seafood has entered inland areas. For shrimps, the requirements for feeding and transportation are high, and the transportation cost of live shrimps is high. Therefore, preliminary processing is required to produce peeled shrimps. At present, shrimp processing companies have been mainly processing frozen shrimps and frozen shrimp products. The heavy metals contained in the shrimp heads are harmful to the human body. People need to remove the heads of shrimps when eating. The deheading of shrimps is an important process in the automatic shelling equipment. In the prior art, because the shrimps are in an inclined state during transportation, it is easy to cut too much or too little when cutting, resulting in incomplete removal of the shrimp heads, which need to be removed again, which is not convenient for the processing of shrimps and not convenient for improving work efficiency. Summary of the invention

[0003] The purpose of the present invention is to provide a crayfish automatic head removal device, which has the effect of completely and efficiently removing the shrimp head.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions: a device for automatically removing the heads of crayfish, comprising a frame and a conveyor belt transmitted to the frame, the frame being provided with a material box and a mounting frame in sequence along the conveying direction of the conveyor belt, the frame being provided with a discharging mechanism for driving the material box to swing back and forth, a discharging port being provided at the bottom of the material box, a support piece corresponding to the discharging port being fixed on the conveyor belt, a cutting mechanism and a lifting mechanism for driving the cutting mechanism to rise and fall being installed on the mounting frame, the cutting mechanism comprising two symmetrically arranged cutters and a driving device for driving the two cutters to move relative to each other, a symmetrically arranged clamping plate being installed on the frame, a linkage mechanism being connected between the clamping plate and the lifting mechanism, clamping ports being provided on both sides of the support piece, and the lifting mechanism driving the clamping plate to move through the clamping ports through the linkage mechanism.

[0005] By adopting the above technical scheme, the lobsters to be processed are stored in a material box, and the discharging mechanism drives the material box to swing so that the lobsters fall from the discharging port of the material box into the support member, and the conveyor belt drives the support member and the lobsters in the support member to be transported forward until the lobster is located between two symmetrically arranged clamping plates, and the lifting mechanism drives the cutting mechanism to descend. During this period, the lifting mechanism drives the clamping plates on both sides through the clamping port through the linkage mechanism to clamp the lobster body, so that the lobster is in a vertical state as a whole, and the lifting mechanism drives the cutting mechanism to descend until the cutter is located on both sides of the lobster head, and the driving device drives the two cutters to move relative to each other to cut off the lobster head, thereby ensuring that the lobster head can be completely removed, and the lobster head and the lobster body are separated, thereby improving the quality of the cutting work.

[0006] The present invention is further configured as follows: the discharge port is provided in plurality, a limiting groove is fixed at the discharge port, the cross section of the limiting groove is configured as a trapezoidal cross section which is wide at the top and narrow at the bottom, and the support member is provided in plurality along the conveying direction of the conveyor belt.

[0007] By adopting the above technical solution, when the discharging mechanism drives the material box to swing, the lobster falls from the discharging port into the support member with its tail facing downward and its head facing upward. After the clamping plate passes through the clamping port, it can clamp both sides of the lobster body, so that the lobster is in a vertical state as a whole, and the lobster head can be completely cut.

[0008] The present invention is further configured as follows: the discharging mechanism includes a fixed frame fixed to the frame, a swing arm fixed to one side of the material box, a transmission shaft rotatably connected to the frame, a cam fixed to the transmission shaft and in contact with the bottom of the swing arm, and a discharging motor installed on the frame for driving the transmission shaft to rotate; the material box is hinged to the fixed frame on one side away from the swing arm, and a swing spring is connected between the swing arm on the side away from the material box and the frame.

[0009] By adopting the above technical solution, when discharging, the discharging motor drives the transmission shaft to rotate, the rotating shaft drives the cam to rotate, contacts with the bottom of the material box, and drives one side of the material box to swing up and down, and the swing spring pulls the material box back and forth through the swing rod, and the lobsters in the material box turn over. Lobsters that meet the conditions of lobster tails facing down and heads facing up fall from the discharging port into the support, thereby realizing continuous discharging and conveying of lobsters and improving processing efficiency.

[0010] The present invention is further configured as follows: the lifting mechanism comprises a lifting cylinder fixed to the mounting frame and a connecting plate fixed to the output end of the lifting cylinder, and the cutting mechanism is configured as a plurality of cutting mechanisms fixed to the bottom of the connecting plate along the same straight line.

[0011] By adopting the above technical solution, when the conveyor belt transports the support and lobster to the point where the lobster is located under the cutting mechanism, the output end of the lifting cylinder extends to drive the connecting plate and the cutting mechanism to descend until the two cutters in the cutting mechanism are located at appropriate positions on both sides of the lobster head. The driving device drives the two cutters to move relative to each other to cut off the lobster head.

[0012] The present invention is further configured as follows: a guide slide groove is provided on the mounting frame, and two sides of the connecting plate are slidably connected to the guide slide groove.

[0013] By adopting the above technical solution, the connecting plate is lifted and lowered smoothly along the guide slot, thereby improving the overall stability of the device.

[0014] The present invention is further configured as follows: the driving device includes a fixing plate fixed to the connecting plate, a driving cylinder fixed to the connecting plate, a triangular block fixed to the output end of the driving cylinder, two symmetrically arranged connecting rods hinged to the fixing plate, and rollers rotatably connected to the upper ends of the connecting rods and abutting against both sides of the triangular block, a telescopic spring is fixed between the two ends of the connecting rods, and the cutter is fixed to the lower end of the connecting rod.

[0015] By adopting the above technical solution, the output end of the lifting cylinder extends to drive the connecting plate and the cutting mechanism to descend. After the two cutters in the cutting mechanism are located at appropriate positions on both sides of the lobster head, the output end of the driving cylinder extends to drive the triangular block to descend. The two sides of the triangular block push the left and right rollers and then push the upper ends of the left and right connecting rods away, and then the lower ends of the left and right connecting rods approach, driving the cutters at the lower ends to cut off the lobster head and separate the lobster head from the tail; when the output end of the driving cylinder returns, the upper ends of the left and right connecting rods approach under the pull of the telescopic spring, and the rollers always fit the triangular block. At the same time, the lower ends of the two connecting rods separate to put down the cut lobster head.

[0016] The present invention is further configured as follows: a notch recessed inwardly is provided at the lower end of the connecting rod, and the notch is located between the cutter and the connecting rod body.

[0017] By adopting the above technical solution, after the lobster head is cut off by the cutting knife, the lobster head is temporarily located in the groove, the lobster head and the lobster body are separated, and the conveyor belt moves the lobster body away.

[0018] The present invention is further configured as follows: the symmetrically arranged clamping plates are arranged in multiple groups, the linkage mechanism includes a horizontal screw rod rotatably connected to the bottom of the frame body, the threads at both ends of the horizontal screw rod have opposite rotation directions, the two clamping plates in the same group are respectively threadedly connected to the two ends of the horizontal screw rod through connecting blocks, one end of the horizontal screw rod is fixedly connected to a gear, and one side of the connecting plate is fixed with a rack meshing with the gear.

[0019] By adopting the above technical scheme, when the support and the lobster move to the bottom of the cutting mechanism and between the clamping plates on both sides, the lifting cylinder drives the connecting plate and the cutting mechanism to descend. During this period, the connecting plate drives the rack to descend, the rack drives the gear to rotate, and the horizontal screw rotates, driving the connecting blocks and the clamping plates on both sides to move relative to each other. A slide groove is set on the side of the clamping plate, and a limit block is set on the side of the frame body to slide in the slide groove to limit the horizontal movement of the clamping plate. Finally, the clamping plates on both sides pass through the clamping mouth to clamp the lobster, so that the lobster head can be in a vertical state, which is conducive to the complete cutting of the shrimp head. The cutting knives on both sides are located on both sides of the lobster head, and the output end of the driving cylinder drives the cutting knives on both sides to cut the lobster head.

[0020] The present invention is further configured as follows: it also includes a pouring trough, a first connecting rod is hinged on one side of the pouring trough, a second connecting rod is hinged between the first connecting rod and the connecting plate, a third connecting rod is hinged on the side of the pouring trough away from the first connecting rod, a fourth connecting rod is hinged between the third connecting rod and the mounting frame, long sliding holes are provided on both sides of the material guide trough, a connecting shaft is hinged between the second connecting rod and the fourth connecting rod, and the connecting shaft is slidably connected between the long sliding holes on both sides.

[0021] By adopting the above technical scheme, initially, the pouring chute is located below the cutter, and when the lifting cylinder drives the connecting plate to descend, the connecting plate pushes the pouring chute to move away from the conveyor belt through the first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod, so that the cutter descends to the two sides of the shrimp head to cut the shrimp head, and the shrimp head is located in the notch. The lifting cylinder drives the connecting plate to rise to lift the shrimp head. During this period, the connecting plate drives the pouring chute close to the conveyor belt through multiple connecting rods, and the connecting shaft slides in the long sliding hole, so that the final pouring chute is located below the notch and the cutter, and the lower ends of the two connecting rods separate to release the shrimp head, and the shrimp head falls out of the pouring chute, so as to realize the separation and collection of the shrimp head and the shrimp tail, avoid affecting the next cutting work, and improve the quality and efficiency of the cutting work.

[0022] The present invention is further configured to include a collection frame located at one side of the frame.

[0023] By adopting the above technical solution, when the support member and the shrimp body are conveyed forward to the end of the frame, the support member flips with the conveyor belt, and the shrimp body falls into the collection frame, and the processed shrimp body is collected for subsequent processing.

[0024] The beneficial effects of the present invention are:

[0025] 1. The lifting mechanism drives the clamping plates on both sides through the clamping opening through the linkage mechanism to clamp the lobster body, so that the lobster is in a vertical state as a whole. The lifting mechanism drives the cutting mechanism to descend until the cutters are located on both sides of the lobster head. The driving device drives the two cutters to move relative to each other to cut off the lobster head, ensuring that the lobster head can be completely removed and the lobster head and lobster body are separated, thereby improving the cutting work quality;

[0026] 2. The discharging motor drives the transmission shaft to rotate, and the rotating shaft drives the cam to rotate, and contacts with the bottom of the material box to drive one side of the material box to swing up and down. The swing spring pulls the material box back and forth through the swing rod, and the lobsters in the material box turn over. The lobsters that meet the conditions of the tail facing down and the head facing up fall from the discharging port into the support, realizing the continuous feeding and conveying of lobsters and improving the processing efficiency;

[0027] 3. When the lifting cylinder drives the connecting plate to descend, the connecting plate pushes the pouring chute to move away from the conveyor belt through the first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod, so that the cutter descends to the two sides of the shrimp head to cut the shrimp head. The shrimp head is located in the slot, and the lifting cylinder drives the connecting plate to rise to lift the shrimp head. During this period, the connecting plate drives the pouring chute close to the conveyor belt through multiple connecting rods, and the connecting shaft slides in the long sliding hole, so that the final pouring chute is located below the slot and the cutter. The lower ends of the two connecting rods separate and release the shrimp head, and the shrimp head falls out of the pouring chute, so as to realize the separation and collection of the shrimp head and the shrimp tail, avoid affecting the next cutting work, and improve the quality and efficiency of the cutting work. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 It is a schematic diagram of the structure of the present invention.

[0030] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0031] Figure 3 yes Figure 1 Enlarged view of point B in the middle.

[0032] Figure 4 It is a schematic diagram of the connection structure of the lifting mechanism, the clamping plate and the linkage mechanism in the present invention.

[0033] Figure 5 yes Figure 4 Enlarged view of point C in the middle.

[0034] Figure 6 It is a schematic diagram of the connection structure of the connecting plate and the pouring chute in the present invention.

[0035] In the figure, 1, frame; 2, conveyor belt; 3, material box; 4, mounting frame; 5, discharging mechanism; 51, fixed frame; 52, swing rod; 53, transmission shaft; 54, cam; 55, discharging motor; 56, swing spring; 6, discharging port; 7, support member; 8, cutting mechanism; 81, cutter; 82, driving device; 821, fixed plate; 822, driving cylinder; 823, triangular block; 824, connecting rod; 825, roller; 826, telescopic spring; 827, notch; 9, lifting mechanism; 91, lifting cylinder; 92, connecting plate; 93, guide slide; 10, clamping plate; 11, linkage mechanism; 111, horizontal screw rod; 112, connecting block; 113, gear; 114, rack; 12, clamping mouth; 13, limit groove; 14, pouring chute; 15, first connecting rod; 16, second connecting rod; 17, third connecting rod; 18, fourth connecting rod; 19, long slide hole; 20, connecting shaft; 21, collection frame. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Embodiment 1, a crayfish automatic head removal device, such as Figure 1 As shown, it includes a frame 1 and a conveyor belt 2 driven by the frame 1, the frame 1 is sequentially installed with a material box 3 and a mounting frame 4 along the conveying direction of the conveyor belt 2, the frame 1 is installed with a discharging mechanism 5 for driving the material box 3 to swing back and forth, a discharging port 6 is provided at the bottom of the material box 3, a support member 7 corresponding to the discharging port 6 is fixed on the conveyor belt 2, a cutting mechanism 8 and a lifting mechanism 9 for driving the cutting mechanism 8 to rise and fall are installed on the mounting frame 4, the cutting mechanism 8 includes two symmetrically arranged cutters 81 and a driving device 82 for driving the two cutters 81 to move relative to each other, a symmetrically arranged clamping plate 10 is installed on the frame 1, a linkage mechanism 11 is connected between the clamping plate 10 and the lifting mechanism 9, clamping ports 12 are provided on both sides of the support member 7, and the lifting mechanism 9 drives the clamping plate 10 to move through the clamping port 12 through the linkage mechanism 11.

[0038] like Figure 1 , Figure 4 As shown, there are multiple discharge ports 6 , a limiting groove 13 is fixed at the discharge port 6 , the cross section of the limiting groove 13 is a trapezoidal cross section that is wide at the top and narrow at the bottom, and multiple support members 7 are arranged along the conveying direction of the conveyor belt 2 .

[0039] like Figure 1As shown, the discharging mechanism 5 includes a fixed frame 51 fixed to the frame 1, a swing rod 52 fixed to one side of the material box 3, a transmission shaft 53 rotatably connected to the frame 1, a cam 54 fixed to the transmission shaft 53 and in contact with the bottom of the swing rod 52, and a discharging motor 55 installed on the frame 1 and driving the transmission shaft 53 to rotate. The side of the material box 3 away from the swing rod 52 is hinged to the fixed frame 51, and a swing spring 56 is connected between the side of the swing rod 52 away from the material box 3 and the frame 1.

[0040] like Figure 1 , Figure 6 As shown, the lifting mechanism 9 includes a lifting cylinder 91 fixed to the mounting frame 4 and a connecting plate 92 fixed to the output end of the lifting cylinder 91. The cutting mechanism 8 is configured as a plurality of connecting plates 92 fixed along the same straight line at the bottom. A guide groove 93 is provided on the mounting frame 4, and both sides of the connecting plate 92 are slidably connected to the guide groove 93.

[0041] like Figure 1 , Figure 2 As shown, the driving device 82 includes a fixing plate 821 fixed to the connecting plate 92, a driving cylinder 822 fixed to the connecting plate 92, a triangular block 823 fixed to the output end of the driving cylinder 822, two symmetrically arranged connecting rods 824 hinged to the fixing plate 821, and rollers 825 rotatably connected to the upper ends of the connecting rods 824 and abutting against the two sides of the triangular block 823, a telescopic spring 826 is fixed between the ends of the two connecting rods 824, the cutter 81 is fixed to the lower end of the connecting rod 824, and the lower end of the connecting rod 824 is provided with an inwardly recessed notch 827, and the notch 827 is located between the cutter 81 and the rod body of the connecting rod 824.

[0042] like Figure 1 , Figure 4 , Figure 5 As shown, the symmetrically arranged clamping plates 10 are provided in multiple groups, and the linkage mechanism 11 includes a horizontal screw rod 111 rotatably connected to the bottom of the frame body 1, and the threads at both ends of the horizontal screw rod 111 are rotated in opposite directions. The two clamping plates 10 in the same group are respectively threadedly connected to the two ends of the horizontal screw rod 111 through connecting blocks 112, and one end of the horizontal screw rod 111 is fixedly connected to a gear 113, and a rack 114 meshing with the gear 113 is fixed to one side of the connecting plate 92.

[0043] like Figure 1 , Figure 3 , Figure 6As shown, it also includes a pouring chute 14, a first connecting rod 15 is hinged on one side of the pouring chute 14, a second connecting rod 16 is hinged between the first connecting rod 15 and the connecting plate 92, a third connecting rod 17 is hinged on the side of the pouring chute 14 away from the first connecting rod 15, a fourth connecting rod 18 is hinged between the third connecting rod 17 and the mounting frame 4, long sliding holes 19 are provided on both sides of the material guide chute, a connecting shaft 20 is hinged between the second connecting rod 16 and the fourth connecting rod 18, and the connecting shaft 20 is slidably connected between the long sliding holes 19 on both sides, and also includes a collecting frame 21 located on one side of the frame body 1.

[0044] Working principle: the discharging motor 55 drives the transmission shaft 53 to rotate, the rotating shaft drives the cam 54 to rotate, contacts with the bottom of the material box 3, drives one side of the material box 3 to swing up and down, the swing spring 56 pulls the material box 3 back and forth through the swing rod 52, and the lobsters in the material box 3 turn over. The lobsters that meet the conditions of the tail facing down and the head facing up fall from the discharging port 6 into the support 7. The conveyor belt 2 drives the support 7 and the lobsters in the support 7 to be transported forward until the lobsters are located between the two symmetrically arranged clamping plates 10; the lifting cylinder 91 drives the connecting plate 92 and the cutting mechanism 8 to descend. During this period, the connecting plate 9 2 drives the rack 114 to descend, the rack 114 drives the gear 113 to rotate, the horizontal screw rod 111 rotates, and drives the connecting blocks 112 on both sides and the clamping plate 10 to move relative to each other, and the clamping plates 10 on both sides pass through the clamping openings 12 to clamp the lobster, so that the lobster head can be in a vertical state; initially, the pouring chute 14 is located below the cutter 81, and during the descending of the connecting plate 92, the connecting plate 92 pushes the pouring chute 14 to move away from the conveyor belt 2 through the first connecting rod 15, the second connecting rod 16, the third connecting rod 17 and the fourth connecting rod 18, so that the cutter 81 descends to be located on both sides of the shrimp head;

[0045] When cutting, the output end of the driving cylinder 822 extends to drive the triangular block 823 to descend. The two sides of the triangular block 823 push the left and right rollers 825, which in turn push the upper ends of the left and right connecting rods 824 away from each other, and then the lower ends of the left and right connecting rods 824 approach each other, driving the lower end of the cutting knife 81 to cut off the lobster head, separating the lobster head from the tail. The lobster head is temporarily located in the notch 827, and the lifting cylinder 91 drives the connecting plate 92 to rise, thereby lifting the lobster head. The connecting plate 92 drives the pouring trough 14 to approach the conveyor belt 2 through multiple connecting rods, and the connecting shaft 20 slides in the long sliding hole 19, so that the pouring trough 14 is finally located below the notch 827 and the cutter 81, and then the output end of the cylinder 822 is driven to return, and the upper ends of the left and right connecting rods 824 are pulled close to each other by the telescopic spring 826, and the roller 825 always fits the triangular block 823, and at the same time, the lower ends of the two connecting rods 824 are separated, and the cut lobster heads are put down, and the lobster heads fall out of the pouring trough 14;

[0046] When the lifting cylinder 91 drives the connecting plate 92 to rise and lift the shrimp head, the connecting plate 92 drives the gear 113 to rotate in the opposite direction through the rack 114, so that the gear 113 drives the connecting blocks 112 on both sides and the clamping plate 10 to move relatively away from the loosened shrimp body through the horizontal screw rod 111; when the support member 7 and the shrimp body are conveyed forward to the end of the frame 1, the support member 7 flips with the conveyor belt 2, and the shrimp body falls into the collection frame 21, and finally the shrimp head and the shrimp tail are separated and collected to avoid affecting the next cutting work and improve the quality and efficiency of the cutting work.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A crayfish automatic head removal device, comprising a frame (1) and a conveyor belt (2) driven by the frame (1), characterized in that: The frame (1) is provided with a material box (3) and a mounting frame (4) in sequence along the conveying direction of the conveyor belt (2); a discharging mechanism (5) for driving the material box (3) to swing back and forth is installed on the frame (1); a discharging port (6) is provided at the bottom of the material box (3); a support member (7) corresponding to the discharging port (6) is fixed on the conveyor belt (2); a cutting mechanism (8) and a lifting mechanism (9) for driving the cutting mechanism (8) to rise and fall are installed on the mounting frame (4); the cutting mechanism (8) comprises two symmetrically arranged cutters (81) and a driving device (82) for driving the two cutters (81) to move relative to each other; a symmetrically arranged clamping plate (10) is installed on the frame (1); a linkage mechanism (11) is connected between the clamping plate (10) and the lifting mechanism (9); clamping ports (12) are provided on both sides of the support member (7); the lifting mechanism (9) drives the clamping plate (10) to move through the linkage mechanism (11). The lifting mechanism (9) passes through the clamping opening (12), comprises a lifting cylinder (91) fixed to the mounting frame (4) and a connecting plate (92) fixed to the output end of the lifting cylinder (91), the cutting mechanism (8) is arranged to be a plurality of parts fixed to the bottom of the connecting plate (92) along the same straight line, and also comprises a pouring trough (14), one side of the pouring trough (14) is hinged with a first connecting rod (15), and the first connecting rod (15) and the connecting plate (92) are connected to each other. A second connecting rod (16) is hingedly connected, a third connecting rod (17) is hingedly connected on the side of the pouring chute (14) away from the first connecting rod (15), a fourth connecting rod (18) is hingedly connected between the third connecting rod (17) and the mounting frame (4), long sliding holes (19) are provided on both sides of the pouring chute (14), a connecting shaft (20) is hingedly connected between the second connecting rod (16) and the fourth connecting rod (18), and the connecting shaft (20) is slidably connected between the long sliding holes (19) on both sides.

2. The automatic crayfish head removal device according to claim 1, characterized in that: The discharge ports (6) are provided in plurality, a limiting groove (13) is fixed at the discharge ports (6), the cross section of the limiting groove (13) is provided as a trapezoidal cross section which is wide at the top and narrow at the bottom, and the support members (7) are provided in plurality along the conveying direction of the conveyor belt (2).

3. The automatic crayfish head removal device according to claim 2, characterized in that: The discharging mechanism (5) comprises a fixed frame (51) fixed to the frame (1), a swinging rod (52) fixed to one side of the material box (3), a transmission shaft (53) rotatably connected to the frame (1), a cam (54) fixed to the transmission shaft (53) and in contact with the bottom of the swinging rod (52), and a discharging motor (55) installed on the frame (1) for driving the transmission shaft (53) to rotate. The side of the material box (3) away from the swinging rod (52) is hinged to the fixed frame (51), and a swinging spring (56) is connected between the side of the swinging rod (52) away from the material box (3) and the frame (1).

4. The automatic crayfish head removal device according to claim 1, characterized in that: The mounting frame (4) is provided with a guide slide groove (93), and the two sides of the connecting plate (92) are slidably connected to the guide slide groove (93).

5. The automatic crayfish head removal device according to claim 1, characterized in that: The driving device (82) comprises a fixing plate (821) fixed to the connecting plate (92), a driving cylinder (822) fixed to the connecting plate (92), a triangular block (823) fixed to the output end of the driving cylinder (822), two symmetrically arranged connecting rods (824) hinged to the fixing plate (821), and rollers (825) rotatably connected to the upper ends of the connecting rods (824) and abutting against two sides of the triangular block (823), a telescopic spring (826) is fixed between the ends of the two connecting rods (824), and the cutting knife (81) is fixed to the lower end of the connecting rod (824).

6. The automatic crayfish head removal device according to claim 5, characterized in that: The lower end of the connecting rod (824) is provided with an inwardly recessed notch (827), and the notch (827) is located between the cutting knife (81) and the body of the connecting rod (824).

7. The automatic crayfish head removal device according to claim 1, characterized in that: The symmetrically arranged clamping plates (10) are arranged in a plurality of groups, and the linkage mechanism (11) comprises a horizontal screw rod (111) rotatably connected to the bottom of the frame (1), the threads at both ends of the horizontal screw rod (111) are screwed in opposite directions, and the two clamping plates (10) in the same group are respectively screwed to the two ends of the horizontal screw rod (111) through connecting blocks (112), one end of the horizontal screw rod (111) is fixedly connected to a gear (113), and one side of the connecting plate (92) is fixedly provided with a rack (114) meshing with the gear (113).

8. The automatic crayfish head removal device according to claim 1, characterized in that: It also includes a collecting frame (21) located on one side of the frame (1).

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