Fish-based body shape killing fish adjustment mechanism

Abstract

The present invention discloses a fish body shape-based fish killing adjusting mechanism, which includes a fish inlet channel, a channel rear adjusting mechanism arranged above the rear end of the fish inlet channel, a channel front adjusting mechanism arranged above the middle and front part of the fish inlet channel, and a knife rest mechanism arranged above the front end of the fish inlet channel; the lower part of the knife rest mechanism rotates around the fixed point of the upper part to adjust the downward cutting angle of the fish killing knife; the knife rest mechanism is connected to the channel front adjusting mechanism, and the opening formed by the limit guiding mechanism of the channel front adjusting mechanism and the bottom plate of the fish inlet channel expands or shrinks with the different rotation positions to adjust the size of the fish head; the opening formed by the limit feeding inlet mechanism of the channel rear adjusting mechanism and the bottom plate of the fish inlet channel expands or shrinks with the different rotation positions of the adjusting handle to adjust the thickness of the fish body; the adjusting handle is connected to the lower part of the knife rest mechanism through a knife rest position adjusting pull rod to drive the simultaneous adjustment of the downward cutting angle, the front end of the channel, and the feeding inlet at the rear end of the channel.

Description

Technical Field

[0001] The invention relates to the technical field of fish product processing machinery, and in particular to a fish killing regulating mechanism based on the fish's body shape. Background Art

[0002] The primary processing of fish includes cleaning, grading, killing and bleeding, descaling, degumming, deheading, and cutting. As people's living standards continue to improve, the demand for high-quality fish protein continues to grow. The manual processing model can no longer meet the requirements of large-scale production, and high-quality, efficient, and mechanized fish processing has become an inevitable requirement.

[0003] Killing and bleeding fish is a key step in the initial processing of fish. Since fresh fish bodies are not conducive to subsequent processing, the process of bleeding and killing fish must be completed first. The gills of fish are where blood vessels are concentrated. Generally, a knife is pierced at the lower edge of the gill cover on both sides. After bleeding, the fish is placed in clean water and allowed to swim, so that the blood in the fish can flow out of the body as quickly as possible and the blood in the fish is minimized. The fish meat processed by bleeding has less fishy smell, which is conducive to improving the taste and quality of the fish meat. At the same time, the fish after bleeding is easy to keep fresh and not easy to deteriorate. It is especially suitable for bleeding immediately after catching and frozen transportation or processing plants and restaurants where only bleeding is required.

[0004] At present, in the process of fish processing, it is usually necessary to bleed the fish manually, and then wash the bled fish manually in a cleaning pool. This processing method has low processing efficiency and high labor intensity. Therefore, the market needs practical equipment with strong adaptability. When developing equipment for killing and bleeding fish, fish of different shapes will be encountered, and the limiting fish and the cutting angle are different. It is necessary to develop a fish killing adjustment mechanism based on the size of the fish. Summary of the invention

[0005] The invention provides a fish killing adjustment mechanism based on the fish body shape, which can realize simultaneous adjustment of the knife lowering angle and the fish body shape limiting mechanism.

[0006] The present invention adopts the following technical solutions:

[0007] The fish killing adjustment mechanism based on the body shape of the fish comprises a fish inlet channel, a rear channel adjustment mechanism arranged above the rear end of the fish inlet channel, a front channel adjustment mechanism arranged above the middle front part of the fish inlet channel, and an adjustable knife holder mechanism arranged above the front end of the fish inlet channel;

[0008] The upper part of the knife holder mechanism is fixed, and the lower part uses the fixed point of the upper part as the rotation center, so as to adjust the downward cutting angle of the fish-killing knife that can move up and down to penetrate the fish gills on the fish inlet channel;

[0009] The front channel adjusting mechanism is connected to the tool rest mechanism. The front channel adjusting mechanism includes a limit guiding mechanism. On one side close to the rear end of the fish inlet channel, the opening formed by the limit guiding mechanism and the bottom plate of the fish inlet channel expands or contracts with different rotation positions of the tool rest mechanism rotating, so as to adjust the size of the fish head.

[0010] The rear channel adjusting mechanism includes an adjusting handle and a limit feeding inlet mechanism. On one side far from the rear end of the fish inlet channel, the opening formed by the limit feeding inlet mechanism and the bottom plate of the fish inlet channel expands or contracts with different rotation positions of the adjusting handle, so as to adjust the thickness of the fish body at the feeding inlet of the fish inlet channel.

[0011] The adjusting handle is connected to the lower part on one side of the tool rest mechanism through a tool rest position adjusting pull rod to drive the adjustment of the tool rest mechanism to realize the simultaneous adjustment of the lower cutting angle, the front end of the channel, and the feeding inlet at the rear end of the channel.

[0012] As an improvement of the above solution, the limit guiding mechanism includes an arc-shaped channel plate, an arc-shaped guiding plate, and several guiding plates. The arc-shaped channel plate and the arc-shaped guiding plate adopt an intersection line design and are welded together; several guiding plates are connected to the arc-shaped guiding plate. The longitudinal length of each guiding plate extends along the rear end of the fish inlet channel, and transversely each guiding plate is arranged along the arc direction of the arc-shaped guiding plate, presenting an arch shape; the arc-shaped channel plate, the arc-shaped guiding plate, and each guiding plate are combined to form an upper fish inlet channel adapted to the head and side profile of the fish body.

[0013] As an improvement of the above solution, the front channel adjusting mechanism further includes symmetrically fixing two L-shaped adjusting rods on the upper surface of the arc-shaped channel plate. One rod body of the L-shaped adjusting rod is vertically arranged relative to the upper surface of the arc-shaped channel plate, and the other transverse rod body extends longitudinally from the window to the same direction as each guiding plate. A protruding part is arranged at the turning point of the L-shaped adjusting rod.

[0014] Flanges protrude relatively from the tops of the two side walls of the fish inlet channel. A front channel limit plate is arranged on the flange, which is used to limit the protruding part during rotation when the front channel adjusting mechanism enlarges the distance between each guiding plate on the upper part of the fish inlet channel and the channel support plate, preventing the front channel adjusting mechanism from completely turning to the front end of the fish inlet channel, and at the same time serving as the fulcrum for the rotation of the front channel adjusting mechanism; spring rings are respectively fixedly arranged on the outer sides of the two front channel limit plates. A pull spring rod body is also arranged between the end of the transverse rod body and the turning point of the L-shaped adjusting rod. A long pull spring connects the pull spring rod body and the spring ring. The long pull spring is used to ensure that the front channel adjusting mechanism cannot completely turn to the rear end of the fish inlet channel when the front channel adjusting mechanism rotates to reduce the distance between each guiding plate on the upper part of the fish inlet channel and the channel support plate.

[0015] As an improvement to the above solution, the tool rest mechanism includes a tool rest, tool rest guide plates disposed on both sides of the tool rest, and a tool rest drive shaft disposed between the two tool rest guide plates; the tool rest is fixedly installed on the tool rest drive shaft, and both ends of the tool rest drive shaft are adapted to the guides of the tool rest guide plates and can move up and down along the guides, so that the bleeding knife on the tool rest pierces into the fish gills or raises the bleeding knife.

[0016] As an improvement to the above solution, a shaft is provided at the upper part of the tool rest guide plate, and this shaft is fixed to the machine frame; one end of a tool rest position adjustment pull rod is connected to the lower rotating shaft of the tool rest guide plate; under the reciprocating pulling of the tool rest position adjustment pull rod, the tool rest guide plate can be driven to rotate around the shaft to adjust the lower cutting position of the bleeding knife on the tool rest;

[0017] A middle support rod for guide plates is also provided between the two tool rest guide plates on both sides, which is used to fasten the two tool rest guide plates and make them rotate simultaneously. An adjustment plate rotating bracket is welded on the middle support rod for guide plates, and the other end of the adjustment plate rotating bracket is rotatably connected to the end of the transverse rod body of the L-shaped adjustment rod.

[0018] As an improvement to the above solution, the limit feeding port mechanism is a rear channel adjustment plate; the rear channel adjustment mechanism further includes a first swing rod having an included angle with the adjustment handle, a shaft spanning above the fish inlet channel, and a second swing rod; one ends of both the adjustment handle and the first swing rod are fastened together and rotate around the shaft as the center; the tool rest position adjustment pull rod and the second swing rod are located on both sides of the first swing rod, and the other end of the tool rest position adjustment pull rod is rotatably connected to the first swing rod. The rotation of the adjustment handle drives the tool rest position adjustment pull rod to adjust the rotation position of the tool rest guide plate.

[0019] As an improvement to the above solution, the second swing rod is fixedly connected to the shaft in the radial direction. The rear channel adjustment plate is disposed in the fish inlet channel, and one end close to the fish inlet is movably connected to the upper channel plate. The top surface of the rear channel adjustment plate near the front end of the fish inlet channel is rotatably connected to a connecting plate, and the other end of this connecting plate is rotatably connected to the second swing rod. The connecting plate and the second swing rod drive the rear channel adjustment plate to move up and down in the rear end of the fish inlet channel as the adjustment handle rotates.

[0020] As an improvement to the above solution, one end of the tool rest drive shaft is movably connected to one end of the tool rest drive connecting rod, and the other end of the tool rest drive connecting rod is rotatably connected to the radius of the flywheel, forming a cam mechanism, so that the tool rest moves up and down along the guide; the motor drives the flywheel to rotate.

[0021] Beneficial effects

[0022] (1) The front adjustment mechanism, the knife holder and the rear adjustment mechanism of the channel form a set of linkage mechanisms for adjusting the size of the fish body. By adjusting the position of the adjustment handle, the position of the lower knife, the welding angle of the front adjustment plate of the channel and the size of the feeding port can be adjusted in a linkage manner. When the adjustment handle is pushed forward, the position of the lower knife moves backward, the welding angle of the front adjustment plate of the channel increases, and the feeding port increases, which can adapt to large-sized fish bodies, and vice versa, it can adapt to small-sized fish bodies. This linkage design improves the adaptability to fish bodies and simplifies the operation steps.

[0023] (2) The channel bottom plate, the channel front adjustment mechanism and the fish pressing plate respectively realize the support, envelopment and pressing of the fish body. The three parts form a complete adaptive contour channel, which realizes low-damage and stable constraint of the fish body and creates favorable conditions for killing and bleeding the fish.

[0024] (3) The working process of the machine imitates the manual killing action of fish. It realizes an effective killing process by first positioning, then pressing and finally impacting the gills to bleed in the fish inlet channel. The kinetic energy of the fish head sliding down in the channel impacts the trigger plate, triggering the transmission device to start a fish killing and bleeding cycle, realizing mechanized and efficient fish killing.

[0025] (4) The fish pressing mechanism can drive the first rotating shaft to drive the fish pressing plate connected to the first pressing rod to move downward under the rotation linkage of the left pressing rod and the right pressing rod, and at the same time drive the second rotating shaft and the second pressing rod to rotate and press the fish pressing plate downward. After the fish body enters the designated position for killing the fish, the fish pressing plate presses the fish body. The first pressing rod and the second pressing rod respectively exert forces on the fish pressing plate, and a stable triangle is formed in combination with the fish pressing plate to ensure the stability of the fish body during the killing process. At the same time, the mechanism has the effect of adaptively pressing the fish body. The tension of the long spring connected between the fish pressing plate driving rod and the pressing rod on the same side is adaptively controlled. The height of the fish pressing plate can be automatically adjusted for fish of different body thicknesses to meet the pressing needs of fish of different sizes, thereby achieving an appropriate fish pressing effect without damaging the fish body. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a perspective structural schematic diagram of a fish killing and bleeding machine provided by an embodiment of the present invention;

[0027] Figure 2 This is a main structural diagram of a fish killing and bleeding machine provided by an embodiment of the present invention;

[0028] Figure 3 It is a left-side structural diagram of a fish killing and bleeding machine provided by an embodiment of the present invention;

[0029] Figure 4 It is a right view structural diagram of a fish killing and bleeding machine provided by an embodiment of the present invention;

[0030] Figure 5 It is a structural schematic diagram of a fish inlet channel provided by an embodiment of the present invention;

[0031] Figure 6 It is a schematic structural diagram of the open state of the fish inlet channel provided by an embodiment of the present invention;

[0032] Figure 7 It is a front view structural schematic diagram of the fish pressing mechanism provided by an embodiment of the present invention;

[0033] Figure 8 It is a top view structural schematic diagram of the fish pressing mechanism provided by an embodiment of the present invention;

[0034] Figure 9 It is a structural schematic diagram of the tool rest mechanism provided by an embodiment of the present invention;

[0035] Figure 10 It is a front view structural schematic diagram of the trigger mechanism provided by an embodiment of the present invention;

[0036] Figure 11 It is a left view structural schematic diagram of the trigger mechanism provided by an embodiment of the present invention;

[0037] Figure 12 It is a front view structural schematic diagram of the front channel adjusting mechanism provided by an embodiment of the present invention;

[0038] Figure 13 It is a left view structural schematic diagram of the front channel adjusting mechanism provided by an embodiment of the present invention;

[0039] Figure 14 It is a top view structural schematic diagram of the front channel adjusting mechanism provided by an embodiment of the present invention;

[0040] Figure 15 It is a front view structural schematic diagram of the rear channel adjusting mechanism provided by an embodiment of the present invention;

[0041] Figure 16 It is a top view structural schematic diagram of the rear channel adjusting mechanism provided by an embodiment of the present invention. Specific embodiments

[0042] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0043] See Figure 1 , a fish killing and bloodletting machine includes a frame 1, a fish inlet channel 2 inclined in the frame, a fish pressing mechanism 3 arranged in the middle of the fish inlet channel, a tool rest mechanism 4 arranged above the front end of the fish inlet channel, a tool rest transmission mechanism 5, and a trigger mechanism 6 located at the front end of the fish inlet channel. The front end of the fish inlet channel is at a low position, and the rear end of the fish inlet channel is at a high position.

[0044] After the fish-killing program is started, the initial position of the tool rest is at the highest position. The fish enters the channel from the rear end of the fish inlet channel and slides down along the fish inlet channel by its own gravity. The time for the fish body to slide down to below the fish pressing plate is equal to the time for the fish pressing plate to fall. The fish pressing mechanism descends and presses on the fish body to fix the fish body. The tool rest driving mechanism drives the tool rest of the tool rest mechanism to descend, and the bleeding knife stabs into the fish gill. Then the tool rest rises, and the fish pressing mechanism then rises. The fish further slides along the fish inlet channel into the front end face of the inlet channel, and the exposed fish mouth touches the triggering mechanism, causing the lower channel support plate of the fish inlet channel to open downward, discharging the fish from the fish inlet channel. Then the channel support plate rotates upward until it resets, and the entire fish-killing and bleeding work cycle is completed.

[0045] The fish inlet channel 2 includes a channel upper plate 21 and a channel support plate 22 which are arranged in an upper and lower mating manner. The channel upper plate fixed on the frame has an angle with the horizontal direction, and the channel bottom plate is the channel support plate. Both sides of the bottom surface of the channel upper plate are fixedly connected with a channel left side plate 211 and a channel right side plate 212 to form a channel with an opening downward. The channel support plate includes a first sliding plate 221, a second sliding plate 222, and a left sliding plate 223 and a right sliding plate 224 located on both sides of the first sliding plate; the second sliding plate is slightly lifted relative to the first sliding plate, and along the fish sliding direction, the second sliding plate abuts against the first sliding plate, the left sliding plate and the right sliding plate respectively to form a concave part as a profiling channel for enveloping and supporting the fish body. The channel support plate is provided with a left side plate 225 and a right side plate 226 on the outside of the left and right sliding plates to form a channel with an opening upward. The channel support plate is designed based on the outer contour of the fish head, and the arc-shaped structure formed by the combination of the first sliding plate, the right sliding plate and the left sliding plate can realize stable fitting and support for the fish head. The fish inlet channel can realize the sliding and support of the fish body and create conditions for the fish-killing action.

[0046] When the channel support plate and the channel upper plate are assembled in a closed state up and down, the channel left side plate and the channel right side plate are inserted between the left side plate and the right side plate of the channel support plate to form a closed fish inlet channel. The distance between the channel left side plate and the channel right side plate at the front end of the fish inlet channel gradually forms the shape of the fish head, and the distance at the end is connected by a channel front upper arc plate 213, which limits the fish head and can expose the fish mouth at the same time. There is a gap between the channel front upper arc plate 213 and the second sliding plate 222 for the fish mouth to touch the triggering mechanism.

[0047] At the fish inlet, the channel left side plate 211 and the channel right side plate 212 extend backward to form a feeding inlet side plate 214, and the upper part of the feeding inlet side plate is fixed to the bottom surface of the channel upper plate. A feeding inlet lower plate 227 is fixedly welded below the feeding inlet side plate. The channel support plate is connected to the feeding inlet lower plate 227 through a hinge 2200. The channel support plate rotates to close or open with the rotation axis of the hinge as the center. When it is closed, it is in the state of fish inlet and fish killing, and when it is open, it is in the state of discharging the killed fish.

[0048] A window 215 is provided on the channel upper plate 21. The fish pressing plate of the fish pressing mechanism 3 presses the fish body through this window, and the bleeding knife pierces the fish gill through this window.

[0049] The fish pressing mechanism 3 includes a first shaft 31 spanning above the fish inlet channel and arranged on the frame through bearings. A fish pressing plate driving rod 32, a pressing rod 33, and a fish pressing plate 34 are arranged on the first shaft. One ends of both the fish pressing plate driving rod and the pressing rod are radially fixedly connected to the first shaft and can rotate around the first shaft. The other ends of both are connected by a long tension spring 35; the pressing rod is located above the fish pressing plate driving rod, and there is a certain angle between the two rod bodies. Two sets of the fish pressing plate driving rod and the pressing rod are provided on the left and right sides of the frame. A first rotating shaft 36 is connected between the pressing rods on the left and right sides. The first rotating shaft is radially fixedly connected to a first top pressing rod 361. Second rotating shafts 37 are connected to the frame walls on the left and right sides of the frame 1. The second rotating shafts are radially fixedly connected to second top pressing rods 371. The ends of the second top pressing rod and the first top pressing rod are respectively fixed on the fish pressing plate 34. When the fish pressing driving rod rotates downward, through the deformation of the long tension spring, the pressing rod is pulled to rotate downward around the first shaft, and the first rotating shaft between the left and right sides moves downward accordingly, thereby pushing the first top pressing rod, and the fish pressing plate descends. During the descending process, the second top pressing rod rotates around the second cross bar and pushes the fish pressing plate to descend and press the fish together with the first top pressing rod. After pressing the fish, there is an angle between the second top pressing rod and the first top pressing rod, so that the force of the first top pressing rod on the fish pressing plate and the force of the second top pressing rod on the fish pressing plate, combined with the fish pressing plate, form a stable triangle, improving the stability of the fish pressing plate for pressing the fish. The tension of the long spring connected between the fish pressing plate driving rod and the pressing rod on the same side is adaptively regulated, and the height of the fish pressing plate can be automatically adjusted for fish with different body thicknesses to adapt to the pressing needs of different specifications of fish, and an appropriate fish pressing effect can be achieved without damaging the fish body.

[0050] The first shaft 31 is radially fixedly connected to a first flywheel to drive a fish pressing connecting rod 381. The opposite end of the first flywheel to drive the fish pressing connecting rod is connected to one end of a second flywheel to drive a fish pressing connecting rod 382 by a rotating shaft. The other end of the second flywheel to drive the fish pressing rod is connected to the radius of the flywheel 51 by a rotating shaft, forming a cam mechanism; the rotation of the flywheel causes the rotating shaft between the second flywheel to drive the fish pressing rod and the first flywheel to drive the fish pressing rod to move horizontally, thereby driving the fish pressing driving rod to rotate around the first shaft 31, linking the rotation of the pressing rod 33, and thus driving the up and down movement of the first rotating shaft 36.

[0051] The knife rest mechanism 4 includes a knife rest 41, knife rest guide plates 42 placed on both sides of the knife rest, and a knife rest driving shaft 43 placed between the two knife rest guide plates. The knife rest is fixedly installed on the knife rest driving shaft. The two ends of the knife rest driving shaft are adapted to the guide rails 421 of the knife rest guide plates and can move up and down along the guide rails, so that the bleeding knife 411 on the knife rest pierces the fish gill or raises the bleeding knife.

[0052] The tool rest drive mechanism 5 includes a motor, a flywheel 51, and a tool rest drive link 52. One end of the tool rest drive link is connected to the tool rest drive shaft 43, and the other end is pivotally connected to the radius of the flywheel 51, forming a cam mechanism that enables the tool rest to move up and down along the guide rail 421. Preferably, the other end of the tool rest drive link 52 is coaxial with the other end of the second flywheel drive fish pressing rod 382, so that the flywheel synchronously drives the lifting of the tool rest bleeding knife and the fish pressing plate. Since the downward stroke of the bleeding knife of the tool rest is greater than the downward stroke of the fish pressing plate, when the motor drives the flywheel to rotate, the fish is pressed first and then stabbed by the bleeding knife.

[0053] During the time when the flywheel rotates one week, the tool rest descends from the initial highest position, pierces into the fish gill, and then lifts and resets.

[0054] The triggering mechanism 6 includes a second shaft 61 spanning above the front end of the fish inlet channel. Both ends of the second shaft are fixed to the machine frame through bearings. The second shaft is connected to a trigger plate 62 through a radially fixed link. The trigger plate can correspondingly touch the fish mouth exposed at the front end of the fish inlet channel. The fish mouth pushes the trigger plate to drive the second shaft to rotate, and the second shaft drives another radially fixed lock rod 63 to rotate.

[0055] Two conveying rollers connected by a conveying chain are arranged below the channel support plate 22. The axle of one of the conveying rollers 641 is fixedly connected to a link 6411, and the other end of the link is connected to a roller 6412. This roller normally abuts against the bottom surface of the channel support plate 22, causing the channel support plate and the channel upper plate to close up and down. When the conveying roller rotates, the link 6411 rotates around the axle center of the conveying roller 641, and the longitudinal height of the roller decreases. The channel support plate rotates around the rotating shaft of the hinge 2200 under the rotation of the roller and its own gravity, and opens to discharge the killed fish from the fish inlet channel.

[0056] The lock rod unlocks or opens the clutch mechanism to complete driving or locking one of the driving rollers. The clutch mechanism includes a trigger flywheel 65 connected to the motor. A step 651 is provided on the circumference of the trigger flywheel. The lock rod 63 is radially connected to a tension spring 66, and the other end of the tension spring is fixedly arranged on the machine frame. Normally, the tension spring pulls the lock rod tightly so that the end face of the lock rod abuts against the step of the trigger flywheel, and the rod body of the lock rod is located on the tangent plane of the trigger flywheel, locking the trigger flywheel. When the fish mouth pushes the trigger plate, the lock rod rotates and leaves the trigger flywheel, and the tension spring undergoes an elongation deformation. The trigger flywheel rotates, and its rotation is transmitted through the transmission device to drive the other conveying roller 642 to rotate, thereby starting the channel support plate 22 to open downward. Optionally, the transmission device is that the axle of the trigger flywheel is fixedly connected to the axle of the other conveying roller. When the fish is discharged from the fish inlet channel, the contraction force of the deformed tension spring pulls the lock rod back to the tangent of the flywheel, and the end face of the lock rod abuts against the step to lock the trigger flywheel. The link 6411 just rotates one week around the axle center of the conveying roller 641, and the channel support plate is lifted from the downward open state to the closed state.

[0057] A trigger link 631 is also arranged radially on the lock rod 63. The other end of the trigger link is fixedly connected radially to the bushing of the first shaft 31. A trigger pull rod handle 633 is also radially connected to the bushing. When the triggering function of the trigger plate 62 fails, the trigger pull rod handle can be manually pushed to rotate around the first shaft, pushing the trigger link to hold against the lock rod to leave or contact the step of the trigger flywheel, thereby starting the opening or closing of the channel support plate.

[0058] Before the fish-killing machine starts working, in order to make the knife-cutting position more suitable for fish of the current specification, the fish-killing and blood-letting machine further includes a front-channel adjusting mechanism, a rear-channel adjusting mechanism, and an adjustable knife rest mechanism. The fish pressing plate 34 is arranged between the front-channel adjusting mechanism and the rear-channel adjusting mechanism.

[0059] The adjustable knife rest mechanism is based on the above-mentioned knife rest mechanism. A third shaft 422 is arranged on the upper part of the knife rest guide plate 42. The third shaft is fixed on the machine frame. One end of a knife rest position adjusting pull rod 44 is connected to the lower part of the knife rest guide plate by a rotating shaft. Under the reciprocating pulling of the knife rest position adjusting pull rod, the knife rest guide plate 42 can be driven to rotate around the third shaft 422, thereby adjusting the lower knife position of the blood-letting knife 411 of the knife rest.

[0060] The front-channel adjusting mechanism includes an arc-shaped channel plate 71, an arc-shaped guiding plate 72, and an L-shaped adjusting rod. The arc-shaped channel plate and the arc-shaped guiding plate adopt an intersection line design and are welded together, located below the window of the upper channel plate. Two side guiding plates 721 and a middle guiding plate 722 are arranged on the arc-shaped guiding plate. The lengths of the three guiding plates extend along the rear end of the fish inlet channel. Horizontally, the three guiding plates are arranged along the arc direction of the arc-shaped guiding plate, showing an arch-shaped arrangement. By adopting the arc-shaped structure and the intersection line design, and combining with the two side guiding plates and the middle guiding plate, an upper fish inlet channel adapted to the head and side profiles of the fish body is formed.

[0061] Corresponding to both sides of the fish inlet channel, two L-shaped adjusting rods are fixed on the upper surface of the arc-shaped channel plate. One rod body 731 of the L-shaped adjusting rod is vertically arranged relative to the upper surface of the arc-shaped channel plate, and the other horizontal rod body 732 extends out from the window of the upper channel plate and extends in the same direction as the three guiding plates. A protruding part 733 is arranged at the turning point of the L-shaped adjusting rod, and a screw is arranged on the protruding part. Front-channel limiting plates 216 are arranged on both sides of the top surface window of the upper channel plate, used to limit the protruding part when the front-channel adjusting mechanism rotates. The screw serves as the pivot point for the rotation of the front-channel adjusting mechanism. Spring pull rings 217 are respectively fixedly arranged on the outer sides of the two front-channel limiting plates. A pull spring rod body 734 is also arranged between the end of the horizontal rod body and the turning point of the L-shaped adjusting rod. A long pull spring 7341 connects the pull spring rod body and the spring pull ring.

[0062] A guide rail plate intermediate support rod 45 is also provided between the guide rail plates 42 on both sides, which is used to fasten the guide rail plates on both sides and rotate simultaneously. An adjusting plate rotating bracket 74 is welded on the guide rail plate intermediate support rod, and the other end of the adjusting plate rotating bracket is rotatably connected to the end of the horizontal rod body 732 of the L-shaped adjusting rod.

[0063] As the guide rail plate of the tool rest rotates, the guide rail plate intermediate support rod pushes the adjusting plate rotating bracket to move back and forth along the fish inlet channel. When the guide rail plate of the tool rest moves forward, the rotating shaft at the end of the horizontal rod body moves obliquely downward to the rear end, and the screw on the protruding part moves away from the front channel limit plate. The long tension spring 7341 ensures that the front channel adjusting mechanism cannot completely turn to the rear end of the fish inlet channel, and the three guide plates on the arc-shaped guiding plate press down, reducing the distance between the upper part of the fish inlet channel and the channel support plate. When the guide rail plate of the tool rest moves backward, the rotating shaft at the end of the horizontal rod body moves obliquely upward to the front end, and the screw on the protruding part contacts the front channel limit plate. The front channel adjusting mechanism rotates with this screw as the fulcrum, and the three guide plates on the arc-shaped guiding plate lift up, increasing the distance between the upper part of the fish inlet channel and the channel support plate. Thus, the adjustment of the thickness of the head and side profile of the fish body in the fish inlet channel is realized.

[0064] A positioning knife 9 is also provided between the two L-shaped adjusting rods 73. The tip of the positioning knife extends towards the channel support plate. The upper surface of the arc-shaped channel plate 71 is rotatably connected to the body of the positioning knife through a rotating shaft seat; the tail of the positioning knife is connected to a spring pull rod 92 fixedly installed on the upper surface of the arc-shaped channel plate through a short tension spring 91. The rotation of the positioning knife has no power mechanism. When the fish body slides onto the channel support plate, the fish body presses the positioning knife upward, and the tail of the positioning knife moves downward, causing the short tension spring to deform and generate a tensile force. The upward retraction force of the short tension spring itself enables the tip of the positioning knife to maintain a downward pressure, and the tip of the positioning knife can exert an elastic pressure on the fish body when the fish body enters below the front channel adjusting mechanism. The positioning knife blade adopts an inverted hook design, with less resistance when the fish body moves forward during the pressing process and extremely large resistance when the fish body moves backward, ensuring that the live fish in the fish inlet channel does not move backward after reaching the designated fish-killing position, achieving the positioning effect of the fish body.

[0065] The rear channel adjusting mechanism 8 includes an adjusting handle 81, a first swing rod 82 that forms an obtuse angle with the adjusting handle, a fourth shaft 83, a second swing rod 84, and a rear channel adjusting plate 85. Both ends of the fourth shaft are rotatably fixed on the frame through bearings and span above the fish inlet channel. One end of the adjusting handle and the first swing rod are fastened together or welded together, with the fourth shaft as the rotation center. The tool rest position adjusting pull rod 44 and the second swing rod 84 are located on both sides of the first swing rod. The other end of the tool rest position adjusting pull rod is rotatably connected to the first swing rod. The rotation of the adjusting handle will link the tool rest position adjusting pull rod 44 to adjust the rotation position of the guide rail plate 42 of the tool rest.

[0066] The fourth shaft is fixedly connected to the second swing rod in the radial direction. The channel rear adjusting plate is arranged in the fish inlet channel. One end close to the fish inlet is hingedly connected to the upper channel plate through a hinge 2100. The top surface of the channel rear adjusting plate close to the front end of the fish inlet channel is rotationally connected to a connecting plate 851 through a rotating shaft. The other end of the connecting plate is rotationally connected to the second swing rod 84. As the adjusting handle rotates, the connecting plate and the second swing rod move up and down through the window 215 of the upper channel plate, driving the front end of the channel rear adjusting plate to move up and down inside the rear end of the fish inlet channel, and adjusting the height of the rear end of the fish inlet channel to adapt to the thickness of the fish body passing through. When the adjusting handle moves forward, the second swing rod moves backward, thereby pulling the tool rest position adjusting pull rod and the tool rest guide plate to move backward. The lower knife position moves backward. The arc-shaped channel plate and the arc-shaped guiding plate of the front channel adjusting mechanism are lifted upward, the angle of the guiding inlet increases, the rotation shaft point of the connecting plate and the second swing rod rises, and the channel rear adjusting plate rotates with the hinge 2100 at its rear end as the rotation center, and its front end rises, and the feeding inlet increases. When the adjusting handle moves backward, the second swing rod moves forward, thereby pulling the tool rest position adjusting pull rod and the tool rest guide plate to move forward. The lower knife position moves forward. The arc-shaped channel plate and the arc-shaped guiding plate of the front channel adjusting mechanism are pressed downward, the angle of the guiding inlet decreases, the rotation shaft point of the connecting plate and the second swing rod drops, and the channel rear adjusting plate rotates with the hinge at its rear end as the rotation center, and its front end drops, and the feeding inlet decreases. The adjusting handle can simultaneously adjust the tool rest mechanism, the front channel adjusting mechanism, and the rear channel adjusting mechanism, realizing synchronous adjustment of the lower knife position and the fish inlet channels suitable for fish bodies of various specifications, improving the fish killing accuracy and simplifying the operation. If the fish inlet channel is too large, the fish pressing mechanism cannot stably press the fish. If the fish inlet channel is too small, the fish cannot complete the entire process of fish pressing, fish killing, and fish discharging.

[0067] A positioning pin hole 811 is also arranged on the rod body of the adjusting handle 81, and a corresponding positioning pin hole 12 is arranged on the frame wall. The adjusting handle and the positioning pin hole on the frame wall are penetrated by a positioning pin, thereby setting six adjustment gears.

[0068] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present invention.

Claims

1. A fish-killing adjusting mechanism based on the body shape of a fish, characterized in that It includes a fish inlet channel (2), a channel rear adjustment mechanism arranged above the rear end of the fish inlet channel, a channel front adjustment mechanism arranged above the middle front part of the fish inlet channel, and an adjustable tool rest mechanism (4) arranged above the front end of the fish inlet channel; The upper part of the tool rest mechanism is fixed, and the lower part rotates around the fixed point of the upper part, so as to adjust the lower knife angle at which the fish-killing knife that can move up and down penetrates the lower gill of the fish in the fish inlet channel; The tool rest mechanism is connected to the channel front adjustment mechanism. The channel front adjustment mechanism includes a limit guiding mechanism. On the side close to the rear end of the fish inlet channel, the opening formed by the limit guiding mechanism and the bottom plate of the fish inlet channel expands or shrinks with different rotation positions of the tool rest mechanism, so as to adjust the size of the fish head; The channel rear adjustment mechanism includes an adjustment handle (81) and a limit feeding port mechanism. On the side far from the rear end of the fish inlet channel, the opening formed by the limit feeding port mechanism and the bottom plate of the fish inlet channel expands or shrinks with different rotation positions of the adjustment handle, so as to adjust the thickness of the fish body at the feeding port of the fish inlet channel; The adjustment handle is connected to the lower part of one side of the tool rest mechanism through a tool rest position adjustment pull rod to drive the adjustment of the tool rest mechanism to realize the simultaneous adjustment of the lower knife angle, the front end of the channel, and the feeding port at the rear end of the channel.

2. The fish-shaped fish-killing adjustment mechanism according to claim 1, wherein The limit guiding mechanism includes an arc-shaped channel plate (71), an arc-shaped guiding plate (72), and several guiding plates (721, 722). The arc-shaped channel plate and the arc-shaped guiding plate adopt an intersection line design and are welded together; several guiding plates (721, 722) are connected to the arc-shaped guiding plate. The longitudinal length of each guiding plate extends along the rear end of the fish inlet channel, and transversely, each guiding plate is arranged along the arc direction of the arc-shaped guiding plate, presenting an arch shape; the arc-shaped channel plate, the arc-shaped guiding plate, and each guiding plate are combined to form an upper fish inlet channel adapted to the head and side contour of the fish body.

3. The fish-shaped fish-killing adjustment mechanism according to claim 2, wherein The channel front adjustment mechanism also symmetrically fixes two L-shaped adjustment rods on the upper surface of the arc-shaped channel plate. One rod body (731) of the L-shaped adjustment rod is vertically arranged relative to the upper surface of the arc-shaped channel plate, and the other horizontal rod body extends longitudinally from the window to the same direction as each guiding plate. A protruding part (733) is arranged at the turning point of the L-shaped adjustment rod; Flanges protrude relatively from the top of the two side walls of the fish inlet channel. A front channel limit plate (216) is arranged on the flange, which is used to limit the protruding part during rotation when the channel front adjustment mechanism enlarges the distance between each guiding plate and the channel support plate at the upper part of the fish inlet channel, preventing the channel front adjustment mechanism from completely turning to the front end of the fish inlet channel, and at the same time serving as the fulcrum for the rotation of the channel front adjustment mechanism; Spring rings (217) are respectively and fixedly arranged on the outer sides of the two front channel limit plates. A pull spring rod body (734) is also arranged between the end and the turning point of the horizontal rod body of the L-shaped adjustment rod. A long pull spring (7341) connects the pull spring rod body and the spring ring. The long pull spring is used to ensure that the channel front adjustment mechanism cannot completely turn to the rear end of the fish inlet channel when the channel front adjustment mechanism rotates to reduce the distance between each guiding plate and the channel support plate at the upper part of the fish inlet channel.

4. The fish-shaped fish-killing adjustment mechanism according to claim 3, wherein, The tool rest mechanism (4) includes a tool rest (41), tool rest guide plates (42) disposed on both sides of the tool rest, and a tool rest drive shaft (43) disposed between the tool rest guide plates on both sides; the tool rest is fixedly mounted on the tool rest drive shaft, and both ends of the tool rest drive shaft are adapted to the guide rails (421) of the tool rest guide plates and can move up and down along the guide rails, so that the bleeding knife on the tool rest pierces into the fish gills or raises the bleeding knife.

5. The fish-shaped fish-killing adjusting mechanism according to claim 4, wherein A shaft (422) is provided at the upper part of the tool rest guide plate (42), and this shaft is fixed to the machine frame. The lower part of the tool rest guide plate is rotationally connected to one end of a tool rest position adjusting pull rod (44); under the reciprocating pulling of the tool rest position adjusting pull rod, the tool rest guide plate can be driven to rotate around the shaft (422) so as to adjust the cutting position of the bleeding knife (411) of the tool rest. A guide plate intermediate support rod (45) is also provided between the tool rest guide plates (42) on both sides, which is used to fasten the tool rest guide plates on both sides and make them rotate simultaneously. An adjusting plate rotating bracket (74) is welded on the guide plate intermediate support rod, and the other end of the adjusting plate rotating bracket is rotationally connected to the end of the transverse rod body (732) of the L-shaped adjusting rod.

6. The fish-based body shape killing fish adjustment mechanism according to claim 5, characterized in that, The limit feeding inlet mechanism is a channel rear adjusting plate (85); the channel rear adjusting mechanism further includes a first swing rod (82) having an included angle with the adjusting handle, a shaft (83) spanning above the fish inlet channel, and a second swing rod (84); one ends of the adjusting handle and the first swing rod are fastened together and rotate around the shaft (83) spanning above the fish inlet channel; the tool rest position adjusting pull rod (44) and the second swing rod are located on both sides of the first swing rod, and the other end of the tool rest position adjusting pull rod is rotationally connected to the first swing rod. The rotation of the adjusting handle drives the tool rest position adjusting pull rod (44) to adjust the rotation position of the tool rest guide plate (42).

7. The fish-shaped fish-killing adjustment mechanism according to claim 6, characterized in that, The shaft (83) spanning above the fish inlet channel is radially fixedly connected to the second swing rod. The channel rear adjusting plate (85) is disposed in the fish inlet channel, and one end close to the fish inlet is movably connected to the upper plate of the channel. The top surface of the channel rear adjusting plate close to the front end of the fish inlet channel is rotationally connected to a connecting plate (851), and the other end of this connecting plate is rotationally connected to the second swing rod (84). The connecting plate and the second swing rod drive the channel rear adjusting plate (85) to move up and down in the rear end of the fish inlet channel as the adjusting handle rotates.

8. The fish-shaped fish-killing adjusting mechanism according to claim 4, wherein One end of the tool rest drive shaft (43) is movably connected to one end of the tool rest drive connecting rod (52), and the other end of the tool rest drive connecting rod is rotationally connected to the radius of the flywheel (51) to form a cam mechanism, so that the tool rest moves up and down along the guide rail (421); the motor drives the flywheel to rotate.

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