Semi-automatic crab strapping machine

Abstract

The utility model discloses a semi-automatic crab strapping machine, and belongs to the technical field of crab processing. Comprising a case, a rotary table mechanism, an opening claw assembly, a feeding mechanism, a cutter mechanism and a pull-out mechanism. And the turntable mechanism is arranged in the case, is provided with at least one group of opening claw components, and can be retracted at the cutting station to receive the latex tube and expanded at the pulling-out station to open the rubber band ring. The feeding mechanism conveys latex tubes to the cutting station, the cutter mechanism cuts the latex tubes into rubber bands, then the rotating disc drives the opening claw assembly to rotate to the pulling-out station, the pulling-out mechanism pulls down the rubber bands from the opening claw assembly, the rubber bands are arranged on crab claws in a sleeving mode, and binding is completed. The latex tube bundling machine integrates latex tube feeding, cutting and pulling-out procedures, adopts the rotating disc to achieve automatic transfer of materials between stations, remarkably improves bundling efficiency and automation level, is suitable for space-limited environments such as fishing boats and the like, and has the advantages of being compact in structure, easy and convenient to operate, high in adaptability and the like.

Description

Technical Field

[0001] This utility model belongs to the field of crab processing technology, specifically relating to a semi-automatic crab binding machine. Background Technology

[0002] In the field of swimming crab fishing and processing, binding the crab claws is a key process to ensure the survival rate and commercial value during transportation. Traditional manual binding is inefficient and labor-intensive. Existing automated equipment separates the cutting of rubber bands and binding of crab claws into independent modules, requiring manual transfer of rubber bands, resulting in poor process continuity, operation delays, and difficulty in achieving efficient binding.

[0003] In addition, existing equipment suffers from problems such as bulky cutting modules, insufficient cavity depth, and poor process coordination, making it impossible to efficiently tie up full-size swimming crabs in compact settings such as fishing boats (especially unable to cover large male crabs), thus hindering the industrial automation upgrade. Utility Model Content

[0004] This utility model addresses the aforementioned problems in the existing technology by proposing a semi-automatic crab binding machine that integrates rubber band cutting and crab claw binding.

[0005] This utility model can be achieved through the following technical solutions:

[0006] A semi-automatic crab tying machine includes:

[0007] The chassis has a cutting station and a pull-out station;

[0008] A turntable mechanism is rotatably mounted inside the housing. At least one set of spreading claw assemblies is distributed on the turntable mechanism. These spreading claw assemblies move between a cutting station and a take-out station as the turntable mechanism rotates. The spreading claw assemblies are configured as follows:

[0009] The cutting station is in a retracted state to receive the rubber band ring;

[0010] The pull-out position is switched to the expansion state to stretch the rubber band ring;

[0011] The feeding mechanism, which is fixed to the chassis and located above the cutting station, is used to directionally feed the latex tube to the opening claw assembly of the cutting station;

[0012] A cutting mechanism, located at the cutting station, is used to perform equal-width segmented cutting of the latex tube located on the spreading claw assembly to form a rubber band ring.

[0013] The pulling mechanism, located at the pulling station, is used to pull the rubber band loop in the expanded state from the spreading claw assembly to complete the binding action of the crab claw.

[0014] As a further improvement of this utility model, the feeding mechanism includes:

[0015] A feeding seat is located on the top of the machine housing, and the inside of the feeding seat is provided with a feeding channel consisting of two belts;

[0016] A drive motor is located on the top of the chassis and is used to drive the belt to rotate.

[0017] As a further improvement of this utility model, the cutting mechanism includes:

[0018] The first geared motor is located on the top of the chassis;

[0019] The first crank rocker arm is located inside the housing and connected to the output shaft of the first geared motor;

[0020] A cutter holder and a cutter are provided. The cutter holder is connected to the first crank rocker arm, and the cutter is mounted on the cutter holder. The first geared motor drives the crank rocker arm to drive the cutter to perform a cutting action.

[0021] As a further improvement of this utility model, the turntable mechanism includes:

[0022] Second geared motor;

[0023] A turntable is connected to the second geared motor, which drives the turntable to rotate.

[0024] As a further improvement of this utility model, multiple sets of the spreading claw assemblies are arranged at equal intervals on the turntable. After each rotation of the turntable, the cutting station and the ejection station each have a set of the spreading claw assemblies.

[0025] As a further improvement of this utility model, the side of the chassis is provided with an opening, which is located at the position of the ejection station and is used to allow crabs to enter.

[0026] As a further improvement of this utility model, the dispensing mechanism includes:

[0027] The third geared motor is located on the top of the chassis;

[0028] A lever is connected to the third geared motor via a transmission assembly, and the third geared motor is used to drive the lever to rotate.

[0029] A pawl is disposed on the lever and rotates synchronously with the rotation of the lever, and the pawl is located at the release position.

[0030] As a further improvement of this utility model, the transmission assembly includes:

[0031] The second crank rocker arm is connected to the third geared motor;

[0032] The driving gear has its gear shaft connected to the second crank rocker arm, and the driving gear is driven to rotate through the second crank rocker arm;

[0033] The driven gear is sleeved on the lever and meshes with the driving gear. As the driving gear rotates, it sequentially drives the driven gear and the lever to rotate.

[0034] As a further improvement of this utility model, the spreading claw assembly includes:

[0035] Mounting support, which is provided on the turntable;

[0036] A lead screw motor is mounted on the mounting bracket, and the output shaft of the lead screw motor passes through an opening in the middle of the mounting bracket.

[0037] A nut, which is mounted on the output shaft of the lead screw motor;

[0038] A nut connector, which is connected to the nut;

[0039] The claw block is connected to the nut connector via a connecting rod structure;

[0040] The lead screw motor drives the nut and the nut connector to move axially, and the connecting rod structure drives the claw block to open outward or retract inward.

[0041] As a further improvement of this utility model, the connecting rod structure is composed of several connecting blocks and connecting plates. The two ends of the connecting plate are respectively hinged to the claw block and the mounting support, and the two ends of the connecting block are respectively hinged to the nut connector and the connecting plate.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] 1. Integrated design improves work efficiency: By highly integrating processes such as latex tube feeding, cutting, rubber band opening and pulling out into one machine, and using a rotating turntable to realize automatic material transfer between workstations, the production cycle and bundling efficiency are significantly improved, solving the problems of low efficiency and high labor intensity of traditional manual operation;

[0044] 2. Compact structure adapts to complex application scenarios: The overall structure is reasonably laid out, highly modular, and compact in size, making it particularly suitable for space-constrained environments such as fishing boat decks and small processing plants, breaking through the limitations of traditional equipment that is difficult to deploy due to its bulky structure;

[0045] 3. Multi-station collaboration enables continuous, rhythmic operation: Multiple sets of opening claw components are set on the turntable, which, together with the geared motor drive, achieve precise angle rotation, allowing each component to switch orderly between different workstations, so that the cutting and pulling actions are carried out synchronously, ensuring that the equipment operates efficiently, stably, and continuously;

[0046] 4. Adaptive opening and closing structure to accommodate full-size swimming crabs: The opening claw assembly is driven by a screw motor and connecting rod structure, which can precisely control the opening and closing amplitude of the claw blocks to meet the binding needs of crabs of different sizes (especially large male crabs), significantly improving the versatility and applicability of the equipment; Attached Figure Description

[0047] Figure 1 This is a front view of the semi-automatic crab tying machine of this utility model;

[0048] Figure 2 This is a schematic diagram showing the location and structure of the cutting mechanism of this utility model;

[0049] Figure 3 This is a schematic diagram showing the location and structure of the dispensing mechanism of this utility model;

[0050] Figure 4 This is a schematic diagram of the back structure of the semi-automatic crab tying machine of this utility model;

[0051] Figure 5 This is a schematic diagram of the internal structure of the feed seat of this utility model;

[0052] Figure 6 This is a structural schematic diagram of the opening claw assembly of this utility model.

[0053] In the diagram, 100 represents the chassis; 110 represents the opening.

[0054] 200. Turntable; 210. Second geared motor;

[0055] 300. Spreading claw assembly; 310. Mounting support; 320. Screw motor; 330. Nut; 340. Nut connector; 350. Claw block; 360. Connecting block; 370. Connecting plate;

[0056] 400. Feeding mechanism; 410. Feeding seat; 411. Belt; 420. Drive motor;

[0057] 500. Cutting mechanism; 510. First geared motor; 520. First crank rocker arm; 530. Cutting plate; 540. Cutting blade;

[0058] 600, Dispensing mechanism; 610, Third geared motor; 620, Dispensing lever; 630, Dispensing pawl; 640, Second crank rocker arm; 650, Driving gear; 660, Driven gear. Detailed Implementation

[0059] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. The technical methods of the present invention will be further described, but the present invention is not limited to these embodiments.

[0060] like Figures 1-6 As shown, this utility model provides a semi-automatic crab tying machine, comprising:

[0061] The chassis 100, as the basic structure of the whole machine, not only supports various functional modules, but also provides a stable platform for operation. The chassis 100 has a cutting station and a pulling station. The cutting station is located at the top inside the chassis 100, and the pulling station is located on the side of the chassis 100.

[0062] A turntable mechanism is rotatably mounted within a housing 100. At least one set of spreading claw assemblies 300 are distributed on the turntable mechanism. The spreading claw assemblies 300 move between a cutting station and a take-out station as the turntable mechanism rotates. The spreading claw assemblies 300 are configured as follows:

[0063] The cutting station is in a retracted state to receive the rubber band ring;

[0064] Switch the pull-out station to the expansion state to stretch the rubber band;

[0065] The feeding mechanism 400 is fixed to the housing 100 and located above the cutting station, and is used to directionally feed the latex tube to the opening claw assembly 300 of the cutting station.

[0066] The cutting mechanism 500 is located at the cutting station and is used to perform equal-width segmented cutting on the latex tube located on the spreading claw assembly 300 to form a rubber band ring.

[0067] The pull-out mechanism 600 is located at the pull-out station and is used to pull the rubber band ring in the expanded state from the spreading claw assembly 300 and put it on the crab claw to complete the binding.

[0068] It should be noted that existing binding equipment suffers from problems such as dispersed modules and poor process coordination, resulting in poor process continuity, operation delays, and difficulty in achieving efficient binding cycles. Furthermore, due to the bulky cutting modules and insufficient expansion cavity depth, it is impossible to achieve efficient binding of full-size swimming crabs in compact settings such as fishing boats (especially unable to cover large male crabs), thus hindering the industrial automation upgrade.

[0069] In comparison, the semi-automatic crab tying machine provided in this embodiment integrates processes such as latex tube feeding, cutting, rubber band opening and pulling out, and uses a rotating turntable 200 to realize material transfer between each station. It effectively solves the problems of low efficiency and high labor intensity of traditional manual tying, and realizes continuous and rhythmic operation, which greatly improves tying efficiency and operational stability.

[0070] In addition, through structural optimization and functional integration, the equipment is made more compact and lightweight, adapting to space-constrained environments such as fishing boats. Meanwhile, the 300-position extendable claw assembly has excellent telescopic adjustment capabilities, which can accommodate swimming crabs of various sizes, especially meeting the binding needs of large male crabs, significantly improving the equipment's versatility and applicability.

[0071] Preferably, the feeding mechanism 400 includes:

[0072] The feed seat 410 is located on the top of the machine housing 100, and the feed seat 410 has a feed channel composed of two belts 411 inside;

[0073] A drive motor 420 is mounted on top of the housing 100 and is used to drive the belt 411 to rotate.

[0074] After the drive motor 420 starts, it drives the belt 411 to rotate synchronously. Through the friction between the belt 411 and the latex tube, the latex tube is continuously and stably transported to the spreading claw assembly 300 at the lower cutting station in a set direction. Since the spreading claw assembly 300 at the cutting station is in a retracted state, the latex tube can be sleeved on the spreading claw assembly 300 and wait for cutting.

[0075] The double belt structure effectively prevents the latex tube from shifting or twisting during the conveying process, ensuring that it falls accurately into the cutting position. The belt speed can also be adjusted according to production needs to match the feeding rhythm of latex tubes of different specifications.

[0076] Preferably, the cutting mechanism 500 includes:

[0077] The first geared motor 510 is located on the top of the housing 100;

[0078] The first crank rocker arm 520 is located inside the housing 100 and is connected to the output shaft of the first geared motor 510;

[0079] The cutter support plate 530 is connected to the first crank rocker arm 520, and the cutter 540 is mounted on the cutter support plate 530. The first geared motor 510 drives the cutter 540 to perform the cutting action by driving the crank rocker arm.

[0080] The operating principle of the entire feeding process is explained as follows:

[0081] When the first geared motor 510 starts, the rotary motion is converted into reciprocating linear motion through the crank-rocker mechanism, thereby driving the cutter 540 to move back and forth, cutting the latex tube located on the spreading claw assembly 300 into equal-width segments to form standard-sized rubber band rings. The cutting cycle can be flexibly controlled by adjusting the crank length or the speed of the first geared motor 510 to adapt to different processing requirements.

[0082] In addition, since the latex tube is already fitted onto the spreading claw assembly 300 during feeding, the rubber band formed after the cutter 540 cuts the latex tube will naturally fit onto the spreading claw assembly 300.

[0083] In summary, the design of the feeding mechanism 400 and the cutting mechanism 500 not only achieves stable conveying and precise cutting of the latex tube, but also improves the automation level and operating efficiency of the equipment, providing a good technological foundation for the subsequent opening and pulling out of the rubber band ring, and further ensuring the efficiency and consistency of the crab binding process.

[0084] Preferably, the turntable mechanism includes:

[0085] Second geared motor 210;

[0086] Turntable 200 is connected to second geared motor 210, which drives turntable 200 to rotate.

[0087] In this embodiment, four sets of spreading claw assemblies 300 are arranged at equal intervals on the turntable 200. Each time the turntable 200 rotates 90 degrees, one set of spreading claw assemblies 300 that has already cut the rubber band ring enters the pulling-out station from the cutting station, ready to pull out and tie it. Another set of new spreading claw assemblies 300 enters the cutting station from the waiting station, ready to receive the latex tube and cut it.

[0088] This process is repeated continuously to ensure that the two key actions of cutting rubber bands and tying crab claws are performed simultaneously in each work cycle.

[0089] Preferably, the side of the chassis 100 is provided with an opening 110, which is located at the position of the ejection station and is used to allow crabs to enter.

[0090] It should be noted that during the process of the spreading claw assembly 300 rotating from the cutting station to the pulling-out station, the spreading claw assembly 300 changes from a retracted state to an expanded state, so that the rubber band ring is stretched open to prevent it from falling off. Then, the spreading claw assembly 300 waits inside the opening for the crab claw to be inserted into the opening of the rubber band ring by the operator. Subsequently, the pulling-out mechanism 600 pulls the rubber band ring outward from the spreading claw assembly 300, and the rubber band ring can automatically tie the crab claw.

[0091] Preferably, the spreading claw assembly 300 includes:

[0092] Mounting support 310 is mounted on turntable 200 and serves as the supporting base for the entire assembly;

[0093] A lead screw motor 320 is mounted on a mounting bracket 310, and the output shaft of the lead screw motor 320 passes through an opening in the middle of the mounting bracket 310.

[0094] Nut 330 is mounted on the output shaft of lead screw motor 320 and achieves linear motion as the lead screw rotates.

[0095] Nut connector 340 is connected to nut 330 and moves axially together with nut 330;

[0096] The claw block 350 is connected to the nut connector 340 via a connecting rod structure. The screw motor 320 drives the nut 330 and the nut connector 340 to move axially, and the claw block 350 is driven to open outward or retract inward via the connecting rod structure.

[0097] The connecting rod structure consists of several connecting blocks 360 and connecting plates 370. The two ends of the connecting plate 370 are respectively hinged to the claw block 350 and the mounting support 310, and the two ends of the connecting block 360 are respectively hinged to the nut connector 340 and the connecting plate 370.

[0098] The action process of opening the claw assembly 300 is described as follows:

[0099] Retracted state (cutting station): The nut connector 340 is located near the mounting support 310. The connecting rod structure retracts, causing the claw block 350 to move inward, forming a compact structure to support the rubber band ring.

[0100] Expanded state (pull-out position): The lead screw motor 320 rotates, pushing the nut connector 340 to move away from the mounting support 310. At this time, the connecting rod structure is stretched and unfolded, causing the claw block 350 to open outward, expanding the already formed rubber band ring, so that the subsequent pull-out mechanism 600 can pull the rubber band ring off the claw block 350 and put it on the crab claw to complete the binding action.

[0101] The opening claw assembly 300 drives the nut connector 340 to move via a lead screw motor 320, and in conjunction with a multi-link structure to drive the claw block 350 to open and close, thus achieving precise opening and release of the rubber band ring. Its compact structure, stable operation, and rapid response not only solve problems such as insufficient opening cavity depth and uncoordinated movements in traditional equipment, but also significantly improve the overall automation level and processing efficiency of the machine.

[0102] Preferably, the disbursement mechanism 600 includes:

[0103] The third geared motor 610 is located on the top of the housing 100;

[0104] The lever 620 is connected to the third geared motor 610 via a transmission assembly. The third geared motor 610 is used to drive the lever 620 to rotate.

[0105] The pawl 630 is mounted on the lever 620 and rotates synchronously with the lever 620. The pawl 630 is located at the release position.

[0106] The operation process of the dispensing mechanism 600 is as follows:

[0107] When the turntable 200 delivers the spreader claw assembly 300 with the elastic band already spread to the release station, the third reduction motor 610 starts and drives the lever 620 to rotate through the transmission assembly. The claw 630 at the end of the lever 620 swings and contacts the elastic band on the spreader claw assembly 300. The claw 630 continues to rotate, pushing the elastic band off the spreader claw assembly 300. The detached elastic band is then fitted onto the crab's claw, completing the binding action.

[0108] The release mechanism 600 uses a third geared motor 610 to drive the lever 620 and the claw 630 to rotate, realizing the automatic detachment and attachment of the rubber band ring from the spreading claw assembly 300. Its structure is simple and reliable, its action is precise and its response is fast. It can effectively cooperate with other functional modules to achieve efficient and stable crab binding operations.

[0109] Furthermore, the transmission components include:

[0110] The second crank rocker arm 640 is connected to the third geared motor 610, which converts the rotational motion of the third geared motor 610 into oscillating motion.

[0111] The drive gear 650 has its gear shaft connected to the second crank rocker arm 640, which drives the drive gear 650 to rotate.

[0112] Driven gear 660 is sleeved on lever 620. Driven gear 660 meshes with driving gear 650. As driving gear 650 rotates, it drives driven gear 660 and lever 620 to rotate in sequence.

[0113] The crank rocker and gear combination is reasonably laid out, occupies little space, and is suitable for integration into the compact structure of the whole machine, improving the overall modularity and maintainability of the equipment. In addition, the gear transmission ratio is fixed, which can achieve precise control of the 630 swing angle of the pawl.

[0114] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of any combination of the above technical features. The above are specific embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

[0115] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0116] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0117] The technical solutions of the various embodiments of this utility model can be combined with each other, but only if they can be implemented by those skilled in the art. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the protection scope claimed by this utility model.

[0118] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A semi-automatic crab tying machine, characterized in that, include: The chassis has a cutting station and a pull-out station; A turntable mechanism is rotatably mounted inside the housing. At least one set of spreading claw assemblies is distributed on the turntable mechanism. These spreading claw assemblies move between a cutting station and a take-out station as the turntable mechanism rotates. The spreading claw assemblies are configured as follows: The cutting station is in a retracted state to receive the rubber band ring; The pull-out position is switched to the expansion state to stretch the rubber band ring; The feeding mechanism, which is fixed to the chassis and located above the cutting station, is used to directionally feed the latex tube to the opening claw assembly of the cutting station; A cutting mechanism, located at the cutting station, is used to perform equal-width segmented cutting of the latex tube located on the spreading claw assembly to form a rubber band ring. The pulling mechanism, located at the pulling station, is used to pull the rubber band loop in the expanded state from the spreading claw assembly to complete the binding action of the crab claw.

2. The semi-automatic crab tying machine according to claim 1, characterized in that, The feeding mechanism includes: A feeding seat is located on the top of the machine housing, and the inside of the feeding seat is provided with a feeding channel consisting of two belts; A drive motor is located on the top of the chassis and is used to drive the belt to rotate.

3. The semi-automatic crab tying machine according to claim 1, characterized in that, The cutting mechanism includes: The first geared motor is located on the top of the chassis; The first crank rocker arm is located inside the housing and connected to the output shaft of the first geared motor; A cutter holder and a cutter are provided. The cutter holder is connected to the first crank rocker arm, and the cutter is mounted on the cutter holder. The first geared motor drives the crank rocker arm to drive the cutter to perform a cutting action.

4. The semi-automatic crab tying machine according to claim 1, characterized in that, The turntable mechanism includes: Second geared motor; A turntable is connected to the second geared motor, which drives the turntable to rotate.

5. A semi-automatic crab tying machine according to claim 4, characterized in that, The spreading claw assemblies are arranged in multiple sets at equal intervals on the turntable. After each rotation of the turntable, the cutting station and the ejection station each have a set of the spreading claw assemblies.

6. A semi-automatic crab tying machine according to claim 1, characterized in that, The side of the chassis has an opening located at the ejection station and is used to allow crabs to enter.

7. A semi-automatic crab tying machine according to claim 1, characterized in that, The disbursement mechanism includes: The third geared motor is located on the top of the chassis; A lever is connected to the third geared motor via a transmission assembly, and the third geared motor is used to drive the lever to rotate. A pawl is disposed on the lever and rotates synchronously with the rotation of the lever, and the pawl is located at the release position.

8. A semi-automatic crab tying machine according to claim 7, characterized in that, The transmission assembly includes: The second crank rocker arm is connected to the third geared motor; The driving gear has its gear shaft connected to the second crank rocker arm, and the driving gear is driven to rotate through the second crank rocker arm; The driven gear is sleeved on the lever and meshes with the driving gear. As the driving gear rotates, it sequentially drives the driven gear and the lever to rotate.

9. A semi-automatic crab tying machine according to claim 1, characterized in that, The spreading claw assembly includes: Mounting support, which is provided on the turntable; A lead screw motor is mounted on the mounting bracket, and the output shaft of the lead screw motor passes through an opening in the middle of the mounting bracket. A nut, which is mounted on the output shaft of the lead screw motor; A nut connector, which is connected to the nut; The claw block is connected to the nut connector via a connecting rod structure; The lead screw motor drives the nut and the nut connector to move axially, and the connecting rod structure drives the claw block to open outward or retract inward.

10. A semi-automatic crab tying machine according to claim 9, characterized in that, The connecting rod structure consists of several connecting blocks and connecting plates. The two ends of the connecting plate are respectively hinged to the claw block and the mounting support. The two ends of the connecting block are respectively hinged to the nut connector and the connecting plate.

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