Pig carcass edge opening single-tool structure and single-tool edge opening method thereof

Abstract

The invention relates to the technical field of livestock slaughtering, in particular to a pig carcass edge-opening single-tool structure and a single-tool edge-opening method of the pig carcass edge-opening single-tool structure. And the double-edge splitting cutter assembly is fixedly installed on one side of the front end of the crank mechanism, and the double-edge splitting cutter assembly comprises a double-edge splitting cutter and a guide plate. The double-edge splitting cutter serving as a single cutter is installed on the crank mechanism, the synchronous belt is driven by the motor to be transmitted to the crank mechanism, the crank mechanism is converted into vertical reciprocating motion to drive the double-edge splitting cutter serving as the single cutter to do vertical cutting motion, and then the two guide plates are installed on the two side faces of the double-edge splitting cutter and used for guiding. When the machine head is split into halves, the guide plate moves downwards at the same time and is pressed into the split live pig trough to play a role in preventing live pigs from jumping, so that due to the fact that the double-edge splitting cutter serving as a single cutter is provided with edges on the two sides, the cutter edge is better in abrasion resistance and longer in service life, and the split live pigs are smoother and more attractive in appearance.

Description

Technical Field

[0001] The invention relates to the technical field of pig splitting, in particular to a pig carcass edge splitting single-knife structure and a single-knife edge splitting method. Background Art

[0002] In the field of pig slaughtering and processing, the process of cutting the pig carcasses (splitting in half) is a key link in the cutting process, which directly affects production efficiency and product quality. The carcass cutting technologies commonly used in the industry currently mainly include the following two categories, namely manual operation and mechanical splitting equipment. The manual operation method relies on the operator to manually split the pig along the midline of the spine with a handheld electric saw or pneumatic saw. This method has significant defects, high labor intensity and low operating efficiency. In addition, due to the poor stability of manual operation, it is easy to cause problems such as splitting deviation, bone chip residue, and uneven cross-section. Mechanical splitting equipment is the current mainstream equipment and mostly uses a hydraulically driven circular saw or band saw structure.

[0003] At present, the applicant has applied for an invention patent with application number 202411755597.0 on December 3, 2024, and publication number CN119244707A. The invention name is a crank mechanism, a pig splitting machine head and a pig splitting machine. The public document records that the pig carcass is currently split in half using a double-knife structure. The double-knife structure is as follows: Figure 4 As shown, each splitting knife of the double-knife structure has a single edge, and the two splitting knives are combined to realize a double edge, so that the two splitting knives are used to split the pig carcass in half alternately, one up and one down. However, during actual use, the double-knife splitting knife makes an uneven cut surface of the pig carcass, resulting in a poor aesthetic appearance of the cut surface of the pig carcass. Summary of the Invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide a single-knife structure for cutting the edge of a pig carcass and a single-knife cutting method thereof, so as to solve the problems existing in the above-mentioned background technology.

[0005] A single-knife structure for opening the edge of a pig carcass, comprising: Crank mechanism; A double-edged splitting knife assembly is fixedly mounted on the front end side of a crank mechanism. The double-edged splitting knife assembly comprises a double-edged splitting knife and a guide plate. The double-edged splitting knife is fixed to the crank mechanism. A pair of guide plates are symmetrically fixed on the two side surfaces of the double-edged splitting knife.

[0006] Preferably, the crank mechanism includes a crank, a rotating seat and a rotating shaft. The crank has a pair and is arranged on the left and right sides, one above and one below. The rotating seat has a pair and is rotatably connected to the rear part of the crank in a one-to-one manner. The rotating shaft bearing is connected between the rotating seats, and the double-edged splitting knife is fixed to the front end of one of the cranks.

[0007] Preferably, a balancing plate is fixed to the front end of the other crank, and the balancing plate is attached to one side of the double-edged splitting knife. The double-edged splitting knife and the balancing plate move alternately through the crank mechanism.

[0008] Preferably, the lower end surface of the guide plate is an inclined surface, and the inclined surface is inclined toward the cutting edge surface of the double-edged splitting knife.

[0009] A method for cutting the edge of a pig carcass with a single knife is based on the above-mentioned single knife structure for cutting the edge of a pig carcass, and specifically comprises the following steps: S1. The motor drives the synchronizing mechanism to start the crank mechanism, causing the double-edged splitting knife fixed to one side of the crank to perform vertical reciprocating motion, while the balance plate fixed to the other side of the crank moves synchronously in the opposite phase; S2. Align the tip of the moving double-edged splitting knife with the midline of the top of the spine of the pig carcass, and make the inclined surfaces of the guide plates symmetrically arranged on both sides of the double-edged splitting knife touch the back tissue of the carcass; S3. Use the crank mechanism to drive the double-edged half-cleaver to chop down along the midline of the spine, while simultaneously performing: S31, the double-edged splitting knife's double edges simultaneously cut the tissues on both sides of the spine; S32, the inclined surface of the guide plate moves downward along with the blade, expanding the split carcass tissue outward; S33, the balance plate maintains the dynamic balance of the double-edged splitting knife in the reverse stroke; S4. When the double-edged splitting knife reaches the pelvic end of the carcass, the crank mechanism lifts the knife body out of the carcass, so that the pig carcass is completely split into two halves along the midline of the spine.

[0010] Beneficial effects: The double-edged half-split knife as a single knife is installed on a crank mechanism, and the motor drives the synchronous belt to the crank mechanism. The crank mechanism converts the motion into an up and down reciprocating motion to drive the double-edged half-split knife as a single knife to perform cutting actions up and down. Then two guide plates are installed on both sides of the double-edged half-split knife for use as a guide. When the machine head splits in half, the guide plates move downward at the same time and are pressed into the half-split pig trough to prevent the pig from jumping. In this way, because the double-edged half-split knife as a single knife is edged on both sides, the blade has better wear resistance and service life, and the pigs split in half have a smoother appearance and are more beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is an overall schematic diagram of the present invention; Figure 2 It is the overall right schematic diagram of the present invention; Figure 3 It is a schematic diagram of the overall main view of the present invention; Figure 4 Schematic diagram of the prior art.

[0012] In the figure: 1-crank mechanism, 11-crank, 12-rotating seat, 13-rotating shaft, 2-double-edged splitting half knife assembly, 21-double-edged splitting half knife, 22-guide plate, 3-balance plate. DETAILED DESCRIPTION

[0013] See also Figure 1-Figure 3 , a pig carcass edge opening single knife structure, comprising: The crank mechanism 1 includes a crank 11, a rotating seat 12 and a rotating shaft 13. The crank 11 has a pair and is arranged left and right, one above and one below. The rotating seat 12 has a pair and is rotatably connected to the rear of the crank 11 in a one-to-one manner. The rotating shaft 13 is connected between the rotating seats 12 by bearings. The crank mechanism 1 is used to connect to a synchronization mechanism, and the synchronization mechanism is connected to a motor. In this way, the motor drives the synchronization mechanism, and the synchronization mechanism drives the two cranks 11 to perform alternating motion. The double-edged splitting knife assembly 2 is fixedly mounted on the front end side of the crank mechanism 1. The double-edged splitting knife assembly 2 includes a double-edged splitting knife 21 and a guide plate 22. The double-edged splitting knife 21 is fixed to the crank mechanism 1. The double-edged splitting knife 21 is fixed to the front end of one of the cranks 11. The guide plates 22 have a pair of symmetrically fixed on the two side surfaces of the double-edged splitting knife 21. Because the lower end surface of the guide plate 22 is an inclined surface, and the inclined surface is inclined toward the cutting edge surface of the double-edged splitting knife 21, Therefore, when one of the cranks 11 drives the tip of the double-edged splitting knife 21 to align with the midline of the top spine of the pig carcass and draw it, two guide plates 22 are installed on both sides of the double-edged splitting knife 21 to serve as a guide. When the machine head splits the pig in half, the guide plates 22 move downward at the same time and are pressed into the half-split pig trough to prevent the pig from jumping. In this way, because the double-edged splitting knife 21 as a single knife is edged on both sides, the blade has better wear resistance and service life, and the appearance of the split pig is smoother and more beautiful.

[0014] A balancing plate 3 is fixed to the front end of the other crank 11. The balancing plate 3 is attached to one side of the double-edged splitting knife 21. The double-edged splitting knife 21 and the balancing plate 3 move alternately through the crank mechanism 1. When the other crank 11 moves, the balancing plate 3 can be driven to move synchronously with the double-edged splitting knife 21. In this way, the dynamic balance of the double-edged splitting knife 21 can be maintained during the reverse stroke through the balancing plate 3.

[0015] See also Figure 1-Figure 3 A method for cutting the edge of a pig carcass with a single knife is based on the above-mentioned single knife structure for cutting the edge of a pig carcass, and specifically comprises the following steps: S1. The motor drives the synchronization mechanism to start the crank mechanism 1, causing the double-edged splitting blade 21 fixed to one side of the crank 11 to perform vertical reciprocating motion. Simultaneously, the balance plate 3 fixed to the other side of the crank 11 moves synchronously in the opposite phase. The momentum of the double-edged splitting blade 21 and the balance plate 3 is offset in real time, suppressing lateral vibration during the splitting process and ensuring the balance of the double-edged splitting blade 21 as a single blade. S2. Align the tip of the moving double-edged splitting knife 21 with the midline of the top of the pig carcass spine, and make the inclined surfaces of the guide plates 22 symmetrically arranged on both sides of the double-edged splitting knife 21 touch the back tissue of the carcass. The symmetrical double-edged edges of the double-edged splitting knife 21 simultaneously cut into both sides of the spine. At the same time, the inclined surfaces of the guide plates 22 on both sides press against the back tissue of the carcass, pre-expanding the soft tissue channel before the knife body falls; S3, the double-edged chopping knife 21 is driven by the crank mechanism 1 to chop downward along the midline of the spine, and simultaneously: S31, the double-edged splitting knife 21 cuts the tissues on both sides of the spine synchronously with its double-edged splitting knife 21's left and right edges acting on both sides of the spine midline simultaneously, eliminating unilateral force deviation; S32, the inclined surface of the guide plate 22 moves downward along with the blade, expanding the split carcass tissue outward. The inclined surface of the guide plate 22 continuously presses down the split carcass tissue, forcing the tissue to slide outward along the inclined surface, forming a gradually expanding separation channel, and preventing the tissue from rebounding and clamping the blade. S33, the balancing plate 3 maintains the dynamic balance of the double-edged splitting knife 21 in the reverse stroke, and the balancing plate 3 absorbs the impact inertia of the knife body in the reverse stroke to maintain the stability of the double-edged splitting knife 21; S4. When the double-edged splitting knife 21 reaches the end of the pelvic cavity of the carcass, the crank mechanism 1 lifts the knife body and withdraws it from the carcass, so that the pig carcass is completely split into two halves along the midline of the spine. The carcass tissue that is continuously expanded by the guide plate 22 remains separated after the knife body withdraws, achieving symmetrical division of the spine and complete splitting of the carcass.

[0016] To sum up, the double-edged splitting knife 21 as a single knife is installed on the crank mechanism 1, and is driven by a synchronous belt driven by a motor to transmit the power to the crank mechanism 1. The crank mechanism 1 converts the motion into an up and down reciprocating motion to drive the double-edged splitting knife 21 as a single knife to perform cutting action up and down, and then two guide plates 22 are installed on both sides of the double-edged splitting knife 21 for use as a guide. When the machine head splits in half, the guide plates 22 move downward at the same time and are pressed into the split pig trough to prevent the pig from jumping. In this way, because the double-edged splitting knife 21 as a single knife is edged on both sides, the blade has better wear resistance and service life, and the appearance of the split pig is smoother and more beautiful.

Claims

1. A single-knife structure for opening the edge of a pig carcass, characterized in that: include: Crank mechanism (1); A double-edged splitting knife assembly (2) is fixedly mounted on a front end side of a crank mechanism (1). The double-edged splitting knife assembly (2) comprises a double-edged splitting knife (21) and a guide plate (22). The double-edged splitting knife (21) is fixed to the crank mechanism (1), and a pair of guide plates (22) are symmetrically fixed on two side surfaces of the double-edged splitting knife (21).

2. The single-knife structure for opening the edge of a pig carcass according to claim 1, characterized in that: The crank mechanism (1) comprises a crank (11), a rotating seat (12) and a rotating shaft (13). The crank (11) has a pair of cranks and is arranged in a left-right manner, one above and one below. The rotating seats (12) have a pair of rotating seats that are connected to the rear of the crank (11) in a one-to-one manner. The rotating shaft (13) is connected between the rotating seats (12) by bearings. The double-edged splitting knife (21) is fixed to the front end of one of the cranks (11).

3. The single-knife structure for opening the edge of a pig carcass according to claim 2, characterized in that: A balancing plate (3) is fixed to the front end of the other crank (11), and the balancing plate (3) is attached to one side of the double-edged splitting knife (21). The double-edged splitting knife (21) and the balancing plate (3) move alternately through the crank mechanism (1).

4. The single-knife structure for edge cutting of pig carcasses according to claim 3, characterized in that: The lower end surface of the guide plate (22) is an inclined surface, and the inclined surface is inclined toward the cutting edge surface of the double-edged splitting knife (21).

5. A method for cutting the edge of a pig carcass with a single knife, based on the pig carcass cutting edge single knife structure according to any one of claims 1 to 4, characterized in that: The specific steps include: S1, the motor drives the synchronization mechanism to start the crank mechanism (1), causing the double-edged splitter (21) fixed to one side of the crank (11) to perform vertical reciprocating motion, while the balance plate (3) fixed to the other side of the crank (11) moves synchronously in the opposite phase; S2, aligning the tip of the moving double-edged splitting knife (21) with the top midline of the spine of the pig carcass, and making the inclined surfaces of the guide plates (22) symmetrically arranged on both sides of the double-edged splitting knife (21) abut against the back tissue of the carcass; S3, the double-edged chopping knife (21) is driven by the crank mechanism (1) to chop downward along the midline of the spine, and simultaneously: S31, the double-edged splitting knife (21) simultaneously cuts the tissues on both sides of the spine with its double-edged edges; S32, the inclined surface of the guide plate (22) moves downward along with the blade, expanding the split carcass tissue outward; S33, the balance plate (3) maintains the dynamic balance of the double-edged splitting knife (21) during the reverse stroke; S4. When the double-edged splitting knife (21) reaches the end of the pelvic cavity of the carcass, the crank mechanism (1) lifts the knife body out of the carcass, so that the pig carcass is completely split into two halves along the midline of the spine.

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