A de-nucleating forceps of a longan de-coring machine

Abstract

The invention provides a kind of de-nucleation forceps of longan de-nucleation machine, which is provided with two parts of forceps seat and forceps head;The forceps seat is provided with sliding cylinder, and the forceps head is provided with cylindrical slider, and the cylindrical slider is installed with push rod, flat cover, vent bolt, flat washer, tension spring, 4-blade blade and holding spring and other components, the forceps head is freely placed on the sliding cylinder of forceps seat by flat cover, the cylindrical slider is sleeved on the upper position inside the sliding cylinder, and the blade head of blade extends downwards through the sliding cylinder. The de-nucleation forceps adopts split-blade design, and the design is cleverly matched, can match various different sizes of fruits, and can completely separate fruit peduncle and pulp without causing excessive pulp loss, and the processed pulp has good integrity, and the best lantern-shaped pulp can be obtained. After de-nucleation in the de-nucleation station, the de-nucleation forceps moves to the release station with the fruit core, and the high-pressure air blows out the fruit core, so that the fruit core does not block. In addition, the forceps head of the de-nucleation forceps can be conveniently removed and cleaned after shutdown.

Description

Technical Field

[0001] This invention relates to a component of a fruit pitting machine, specifically a pitting clamp for a longan pitting machine, belonging to the field of food processing machinery technology. Background Technology

[0002] Besides being eaten fresh, some longan fruit is also processed into dried longan to increase its added value. There are two main methods for making dried longan: one is to dry the fresh longan fruit directly, shell and pit intact. Longan made using this method has dark brown flesh, poor quality and appearance, and the flesh is tightly attached to the pit, making it difficult to eat. The other method is to remove the pit and shell from the fresh longan fruit before drying the flesh. Longan made using this method has orange-yellow flesh, good quality and appearance, is easy to eat, and has a higher added value than longan made directly.

[0003] In the past, the pitting and shelling of fresh longan fruit mainly relied on manual operation. This method was inefficient, time-consuming, and labor-intensive, making it unsuitable for large-scale processing. Therefore, some more efficient longan pitting and shelling machines have been introduced to the market. In fresh longan fruit, the longan seed and the longan flesh are tightly connected at the stem end. To remove the seed from fresh longan fruit by machine, the stem end of the longan seed must first be cut and separated from the flesh with a cutter, and then a thin push rod is used to push the longan seed out of the flesh.

[0004] Currently available longan pitting and shelling machines have inadequately designed mechanisms for separating the stem and pulp. Most employ a simple, one-piece ring-cutting blade that cuts the stem vertically. The ring-shaped cut of this type of blade is difficult to adapt to fruits of varying sizes. If the cut is too small, it fails to sever the connection between the stem and pulp, damaging the appearance of the pulp during pitting and preventing the acquisition of the optimal lantern-shaped pulp, thus significantly reducing the product's price. Conversely, if the cut is too large, it results in excessive pulp loss due to the separation of too much stem and pulp. Furthermore, after severing the connection between the stem and pulp using the one-piece ring-cutting blade, the pit is difficult to expel when the thin pusher ejects it from the pulp and falls into the blade's opening, easily causing blockages. Additionally, existing blades are inconvenient to disassemble and clean after use, and they become contaminated with a large amount of longan juice during operation. If not cleaned promptly after use, mold and other harmful substances can develop, contaminating the pulp during subsequent uses. Summary of the Invention

[0005] The purpose of this invention is to provide a pitting pliers for a longan pitting machine, used to cut and separate the fruit stem and pulp. It adopts a split blade design and the design is ingenious. The pliers head can be easily removed for cleaning, which can effectively solve the above-mentioned defects.

[0006] The specific technical solution of this invention is as follows:

[0007] A pitting clamp for a longan pitting machine comprises two main parts: a clamp base and a clamp head. The clamp base has a vertically extending slide cylinder, with an inwardly tapering flange at the lower opening. A locking nut is threaded onto the outer side of the slide cylinder, and an outwardly flared flange is located at the lower end of the outer side. The clamp head has a cylindrical slider that matches the slide cylinder of the clamp base and can slide up and down within the slide cylinder. The cylindrical slider has a central hole, and a push rod is slidably fitted within the central hole. The lower end of the push rod has a push head larger than the diameter of the central hole of the cylindrical slider. The center of the push rod has a threaded hole extending vertically. A flat cover with a central hole is placed on the top surface of the cylindrical slider. The upper end of the push rod... The rod extends upwards through the central hole of the cylindrical slider and the central hole of the flat cover, then protrudes outwards from the top surface of the flat cover. A vent bolt is connected to the threaded hole of the push rod. The threaded head of the vent bolt is pressed against the upper end face of the push rod by a flat washer. The lower end of the vent bolt extends downwards from the push head of the push rod. The center of the vent bolt has a through-hole. A tension spring is fitted onto the rod body between the flat washer and the flat cover. The tension spring pulls the push head at the lower end of the push rod up to the lower edge of the central hole of the cylindrical slider. The outer circumference of the cylindrical slider has a vertically arranged strip groove on each side. The outer circumference of the cylindrical slider has two annular grooves, one narrow and one wide, at the bottom. The upper annular groove is a cutter shaft receiving groove, and the lower annular groove is a spring receiving groove. Each groove contains a blade. The blade has a vertical blade body, with a cutter shaft extending horizontally to both sides at the upper end. The lower end of the vertical blade body is connected to an inwardly converging inclined blade body, and the end of the inclined blade body is connected to a vertically extending downward cutting head with a cutting edge at the lower end. The vertical blade bodies of the four blades are movably fitted into the four grooves of the cylindrical slider, and the cutter shaft is movably fitted into the cutter shaft receiving groove of the cylindrical slider. The inclined blade body and... The cutting head is located below the cylindrical slider. The cylindrical slider has one or more annular clamping springs in its spring receiving groove. The clamping springs surround the vertical blade of the four blades, causing the four blades to retract inward. When the four blades are fully retracted, the cutting head is joined together to form an annular cutting head. The pusher of the push rod is located directly above the funnel-shaped frame formed by the inclined blades of the four blades. The lower opening of the vent hole of the vent bolt is located directly above the annular cutting head. The clamp head is freely mounted on the slide cylinder of the clamp seat through the flat plate cover. The cylindrical slider is sleeved inside the slide cylinder at the upper position. The cutting head of the four blades extends downward through the lower opening of the slide cylinder.

[0008] Furthermore, the front and rear blades of the four-lobed blade have inwardly bent vertical side edges on their left and right sides. When the four-lobed blade is fully closed, the side edges of the front and rear blades form an enclosure, and the blades of the left and right sides fit snugly around the outer edge of the side edges of the front and rear blades. Conventional split-blade designs, when cutting into the fruit stem, suffer from poor cutting performance at the joint, and the blade edges at the joint are prone to wear, resulting in some fruit stem and pulp residue adhering to the joint after cutting, affecting the final pitting effect. This invention, by enclosing the side edges of the front and rear blades and fitting the blades of the left and right sides snugly around the outer edge of the front and rear blades, perfectly solves the problem of poor cutting performance at the joint and effectively reduces the wear rate of the blade edges at the joint.

[0009] Preferably, the cylindrical slider has two annular clamping springs in its spring receiving groove.

[0010] This longan pitting machine features a split-blade design in its pitting clamps. The clever design ensures that when the push rod moves down, the four blades first align to form a ring-shaped cutting head, penetrating the longan stem to a certain depth. Then, the blades separate and open to a certain extent, separating the fruit flesh around the stem and achieving complete separation. Because of this split-blade design, the blade size can be tailored to the size of smaller stems to accommodate various fruit sizes. This ensures thorough separation of the stem and flesh without excessive flesh loss, resulting in well-preserved, lantern-shaped fruit with optimal appearance, thus increasing the product's selling price. When this pitting clamp is used at the pitting station, the longan seed pushed upwards by the push rod after the blade opens is automatically clamped on the blade when the blade closes. After the clamp moves to the pit-releasing station, the push rod is pushed downwards to open the blade again. At the same time, high-pressure air is introduced into the top surface of the vent hole of the vent bolt, and the high-pressure air blows the longan seed downwards through the vent hole, preventing blockage. In addition, the clamp head of this pitting clamp rests freely on the clamp base. After stopping the machine, the clamp head can be easily removed to clean the blade tip, making it cleaner and more hygienic for the next use. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the nucleolysis clamp.

[0012] Figure 2 for Figure 1 Front cross-sectional view of the nucleus removal clamp.

[0013] Figure 3 for Figure 2 Enlarged cross-sectional view of the blade of the nucleolytic forceps along the AA direction.

[0014] Figure 4 This is a schematic diagram of the three-dimensional structure of the clamp base.

[0015] Figure 5 This is a schematic diagram of the three-dimensional structure of the pliers head.

[0016] Figure 6 for Figure 5 A schematic diagram of the three-dimensional structure of the pliers head after it has been rotated 180° up and down.

[0017] Figure 7 for Figure 5 Exploded view of the pliers head.

[0018] Figure 8 This is a schematic diagram of the installation of the core removal clamp.

[0019] In the diagram: 1-slide cylinder, 2-locking nut, 3-cylindrical slider, 3.1-strip groove, 3.2-cutter shaft receiving groove, 3.3-spring receiving groove, 4-push rod, 5-flat cover, 6-vent bolt, 6.1-vent hole, 7-flat washer, 8-tension spring, 9-blade, 9.1-vertical blade, 9.2-cutter shaft, 9.3-tilted blade, 9.4-cutter head, 9.5-side blade, 10-clamping spring, 11-mounting plate. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings. In the description of the present invention, directional terms such as "front," "rear," "left," "right," "up," and "down" are based on the appendix to the specification. Figure 1 The orientations or positional relationships shown are defined only for the convenience of describing the present invention, and do not refer to a specific orientation that the device or element must have, and should not be regarded as a limitation of the present invention.

[0021] like Figure 1-7As shown, the pitting clamp of this longan pitting machine consists of two main parts: a clamp base and a clamp head. The clamp base has a vertically extending slide cylinder 1, with an inwardly tapered flange at the lower opening of the slide cylinder 1. A locking nut 2 is connected to the outer side of the slide cylinder 1 via an external thread, and an outwardly flared flange is located at the lower end of the outer side of the slide cylinder 1. The clamp head has a cylindrical slider 3 that matches the slide cylinder 1 of the clamp base and can slide up and down within the slide cylinder 1. The cylindrical slider 3 has a central hole, and a push rod 4 is slidably fitted inside the central hole. The lower end of the push rod 4 has a push head larger than the diameter of the central hole of the cylindrical slider 3. The center of the push rod 4 has a vertically extending threaded hole. A flat plate cover 5 with a central hole is placed on the top surface of the cylindrical slider 3. The upper end of the push rod 4 passes upward through the central hole and the flat plate cover 5 of the cylindrical slider 3. The central hole of the plate cover 5 extends outward from the top surface of the plate cover 5. A vent bolt 6 is connected to the threaded hole of the push rod 4. The threaded head of the vent bolt 6 is pressed against the upper end surface of the push rod 4 by the flat washer 7. The lower end of the vent bolt 6 extends downward from the push head of the push rod 4. The center of the vent bolt 6 has a vent hole 6.1 that runs vertically through the center. A tension spring 8 is sleeved on the rod body of the push rod 4 between the flat washer 7 and the plate cover 5. The tension spring 8 pulls the push head at the lower end of the push rod 4 up to the lower edge of the central hole of the cylindrical slider 3. The outer circumference of the cylindrical slider 3 has a vertically arranged strip groove 3.1 on the front, back, left, and right sides. The outer circumference of the cylindrical slider 3 also has two annular grooves, one narrow and one wide, on the lower part. The upper annular groove is a cutter shaft receiving groove 3.2, and the lower annular groove is a spring receiving groove 3.3. Each strip-shaped groove 3.1 contains a blade 9. The blade 9 has a vertical blade body 9.1, the upper end of which has a cutter shaft 9.2 extending horizontally to both sides. The lower end of the vertical blade body 9.1 is connected to an inwardly converging inclined blade body 9.3, and the end of the inclined blade body 9.3 is connected to a vertically downward extending blade head 9.4. The lower end of the blade head 9.4 has a cutting edge. The vertical blade bodies 9.1 of the four blades 9 are movably fitted into the four strip-shaped grooves 3.1 of the cylindrical slider 3. The cutter shaft 9.2 is movably fitted into the cutter shaft receiving groove 3.2, the inclined blade body 9.3, and the blade head 9.4 of the cylindrical slider 3. Located below the cylindrical slider 3, the cylindrical slider 3 has one or more annular clamping springs 10 in its spring receiving groove 3.3. The clamping springs 10 surround the outside of the vertical blade 9.1 of the four blades 9, causing the four blades 9 to retract inward. When the four blades 9 are fully retracted, the blade heads 9.4 are joined together to form an annular cutting head. The push head of the push rod 4 is located directly above the funnel-shaped frame formed by the inclined blades 9.3 of the four blades. The lower opening of the vent hole 6.1 of the vent bolt 6 is located directly above the annular cutting head. The clamp head is freely mounted on the slide cylinder 1 of the clamp seat through the flat cover 5. The cylindrical slider 3 is sleeved inside the slide cylinder 1 at an upper position. The blade heads 9.4 of the four blades 9 extend downward through the lower opening of the slide cylinder 1.

[0022] The front and rear blades 9 of the four-petal blade 9 have vertical side edges 9.5 that bend inward on the left and right sides of the blade head 9.4. When the four-petal blade 9 is fully closed, the blade head side edges 9.5 of the front and rear blades 9 form an encirclement, and the blade head 9.4 of the left and right blades 9 fits and surrounds the outer periphery of the blade head side edges 9.5 of the front and rear blades.

[0023] The working principle of this nucleation clamp is as follows:

[0024] When installing this core removal clamp, if... Figure 8 As shown, the clamp base is clamped and fixed to the mounting hole of the horizontal mounting plate 11 by the locking nut 2 and the protruding edge at the lower end of the slide cylinder 1. The clamp head is freely supported above the slide cylinder 1 of the clamp base by the flat cover 5. When the mounting plate 11 moves the de-core clamp to the de-core station, the cam mechanism above the de-core station drives the elastic push head to push the vent bolt 6 and the push rod 4 downward to control the de-core clamp at the de-core station. When the push rod 4 moves down, the four-lobed blade 9 moves down together with the cylindrical slider 3 until the cylindrical slider 3 rests against the stop edge of the lower opening of the slide cylinder 1. At this time, the four-lobed blade 9 is completely retracted under the action of the clamping spring 10, and the blade head 9.4 penetrates the longan fruit stem to a certain depth in the form of a ring cutting head. Then the push rod 4 continues to move down and presses against the funnel-shaped frame formed by the inclined blade body 9.3 of the four-lobed blade, causing the blade head 9.4 of the four-lobed blade 9 to open to a certain extent. The opened blade head 9.4 opens the fruit pulp connected to the fruit stem, realizing the complete separation of the fruit stem from the fruit pulp. As the blade head 9.4 of the four-lobed blade 9 opens, a thin push rod passes through the longan peel and pulp from below, pushing the longan seed upwards. Then, the push rod 4 returns to its original position under the action of the tension spring 8, and the blade head 9.4 of the four-lobed blade 9 closes again under the action of the clamping spring 10, clamping the ejected longan seed on the blade head 9.4 and moving upwards back to its original position together with the cylindrical slider 3. After the seed-removing clamp holding the longan seed moves to the seed-releasing station with the mounting plate 11, the cam mechanism above the seed-releasing station drives the elastic push head with the air blowing channel to push the air bolt 6 and push rod 4 of the seed-removing clamp at the seed-releasing station downwards, so that the air blowing channel of the elastic push head aligns with the air bolt 6. At the same time, the push rod 4 moves downwards, causing the blade head 9.4 of the four-lobed blade 9 of the seed-removing clamp to open. The high-pressure air blown out by the air blowing channel blows the clamped seed downwards through the air hole 6.1 of the air bolt 6.

[0025] The above illustrations are merely typical embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A depitting clamp for a longan depitting machine, characterized in that: The de-kerneling clamp consists of two main parts: a clamp base and a clamp head. The clamp base has a vertically extending slide cylinder, with an inwardly tapering flange at the lower opening. A locking nut is connected to the outer side of the slide cylinder via an external thread, and the lower end of the outer side of the slide cylinder has an outwardly flared flange. The clamp head has a cylindrical slider that matches the slide cylinder of the clamp base and can slide up and down within the slide cylinder. The cylindrical slider has a central hole, and a push rod is slidably fitted inside the central hole. The lower end of the push rod has a push head larger than the diameter of the central hole of the cylindrical slider. The center of the push rod has a vertically extending threaded hole. A flat cover with a central hole is placed on the top surface of the cylindrical slider, and the upper end of the push rod passes upward through... The cylindrical slider's center hole and the flat plate cover's center hole extend outwards from the top surface of the flat plate cover. A vent bolt is connected to the threaded hole of the push rod. The vent bolt's head is pressed against the upper end face of the push rod by a flat washer. The lower end of the vent bolt extends downwards from the push head of the push rod. The vent bolt has a through-hole in its center. A tension spring is fitted onto the push rod between the flat washer and the flat plate cover. The tension spring pulls the push head at the lower end of the push rod up to the lower edge of the cylindrical slider's center hole. The outer circumference of the cylindrical slider has a vertically arranged strip groove on each of the front, back, left, and right sides. The lower part of the slide has two annular grooves, one narrow and one wide. The upper annular groove is a cutter shaft receiving groove, and the lower annular groove is a spring receiving groove. Each groove contains a blade. The blade has a vertical blade body, with a cutter shaft extending horizontally to both sides at the upper end. The lower end of the vertical blade body is connected to an inwardly converging inclined blade body, and the end of the inclined blade body is connected to a vertically extending blade head with a cutting edge at the lower end. The vertical blade bodies of the four blades are movably fitted into the four grooves of the cylindrical slider, and the cutter shaft is movably fitted into the cutter shaft receiving groove of the cylindrical slider. The inclined blade body and the blade head... Located below the cylindrical slider, the cylindrical slider has one or more annular clamping springs in its spring receiving groove. The clamping springs encircle the outside of the vertical blade of the four blades, causing the four blades to retract inward. When the four blades are fully retracted, the blades are joined together to form an annular cutting head. The pusher of the push rod is located directly above the funnel-shaped frame formed by the inclined blades of the four blades. The lower opening of the vent hole of the vent bolt is located directly above the annular cutting head. The pliers are freely mounted on the slide cylinder of the pliers seat through the flat cover. The cylindrical slider is sleeved inside the slide cylinder at the upper position. The blades of the four blades extend downward through the lower opening of the slide cylinder. The front and rear blades of the four-petal blade have inwardly bent vertical side edges on the left and right sides of the blade head. When the four-petal blade is fully closed, the side edges of the front and rear blades form an encirclement, and the blade heads of the left and right blades fit closely around the outer periphery of the side edges of the front and rear blades.

2. The depitting clamp of the longan pitting machine according to claim 1, characterized in that: The cylindrical slider has two annular clamping springs in its spring receiving groove.

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