Special tweezers for non-destructive separation of selenium-enriched tenebrio molitor pupae

Abstract

The utility model belongs to the technical field of selenium-enriched yellow mealworm breeding and processing equipment, especially to a special tweezers for nondestructive separation of selenium-enriched yellow mealworm pupae, including left tweezers arm, right tweezers arm, left chuck, right chuck, adjusting assembly, spring, support guide assembly and two flexible collets, the left chuck and right chuck are fixedly installed at the bottom of left tweezers arm and right tweezers arm respectively and are symmetrically arranged, the left tweezers arm and left chuck and right tweezers arm and right chuck are integrally arranged. The utility model has reasonable design, and the left chuck and right chuck matched with the flexible collet can realize the change from point contact to surface wrapping, so that the clamping force can be uniformly dispersed, and stress concentration can be avoided, and through the adjustable spring limiting force structure, a self-definable safety upper limit can be set for the clamping force, and the damage caused by the operator's excessive force can be eliminated from the mechanical root.

Description

Technical Field

[0001] This utility model relates to the technical field of equipment for breeding and processing selenium-enriched yellow mealworms, and in particular to a special tweezer for non-destructive separation of selenium-enriched yellow mealworm pupae. Background Technology

[0002] In the process of large-scale and refined breeding of mealworms, the management of the pupal stage is crucial. Because the pupae have weak life activities, soft and delicate body walls, and need to be separated from active larvae and metabolic waste, manual sorting using ordinary pointed tweezers is currently the most common method. However, existing methods have significant drawbacks:

[0003] Ordinary tweezers: Their tips are usually hard, dotted or linear, with a small contact area and high pressure with the pupa. They can easily leave pinch marks or even pierce the body wall of the pupa, becoming a channel for pathogen invasion, which seriously affects the survival rate of the pupa and the health of the adult insect.

[0004] Unadjustable clamping force: The force of the fingers using tweezers is difficult to control precisely and is affected by different operators. It is very easy to cause irreversible squeezing damage to the internal tissues of the pupa due to excessive squeezing force, leading to its death or failure to emerge.

[0005] Therefore, the existing technology lacks a special tool that can actively adapt to the morphology of the pupa and limit the maximum clamping force from a physical structure perspective, resulting in a high rate of pupa damage during the sorting process, which restricts the further improvement of breeding efficiency.

[0006] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0007] The purpose of this invention is to address the shortcomings mentioned in the background section by proposing a special tweezer for non-destructive separation of selenium-enriched yellow mealworm pupae.

[0008] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a special tweezer for non-destructive separation of selenium-enriched yellow mealworm pupae, comprising a left tweezer arm, a right tweezer arm, a left clamp, a right clamp, an adjustment component, a spring, a support and guide component, and two flexible sleeves;

[0009] The left and right chucks are fixedly installed at the bottom of the left and right tweezer arms respectively and are arranged symmetrically. The left tweezer arm and the left chuck, and the right tweezer arm and the right chuck are all integrally formed. Two flexible sleeves are respectively fitted onto the left and right chucks. The top of the side of the left and right tweezer arms that are close to each other is detachably fixedly connected. The spring is fixedly installed on the side of the left tweezer arm that is close to the right tweezer arm. The support and guide assembly is located on the side of the right tweezer arm that is close to the left tweezer arm and is fixedly connected to the spring. The adjustment assembly is located on the right tweezer arm and is connected to the support and guide assembly.

[0010] Preferably, the support guide assembly includes a mounting block and two T-shaped slide bars. Two T-shaped slide bars arranged in parallel to each other are fixedly installed on the side of the right tweezer arm closer to the left tweezer arm. The same mounting block is slidably installed on the two T-shaped slide bars. The mounting block is fixedly connected to the end of the spring away from the left tweezer arm.

[0011] Preferably, the adjustment assembly includes a screw and a screw sleeve, with the screw sleeve fixedly mounted on the mounting block and the screw rotatably mounted on the right tweezer arm, the screw being threadedly connected to the screw sleeve.

[0012] Preferably, a rotating block is fixedly installed at the end of the screw away from the left tweezer arm. The outer surface of the rotating block is provided with anti-slip texture, and the diameter of the rotating block is larger than the diameter of the screw.

[0013] Preferably, the top of the left and right tweezer arms on opposite sides is provided with a circular groove and a regular polygonal groove, respectively. A semi-threaded bolt extending into the regular polygonal groove is movably inserted in the circular groove. A nut that is threadedly connected to the semi-threaded bolt is slidably installed on the inner wall of the regular polygonal groove. The outer contour of the nut is adapted to the regular polygonal groove, and a cross-shaped groove is provided at the end of the semi-threaded bolt away from the nut.

[0014] Preferably, both flexible sleeves are made of food-grade silicone material, and the outer periphery of both flexible sleeves that are close to each other are provided with fine anti-slip textures.

[0015] Preferably, a positioning pin is fixedly installed on the top of the side of the left and right tweezer arms that are close to each other, and a positioning hole adapted to the positioning pin is opened on the top of the side of the left and right tweezer arms that are close to each other, and the two positioning pins are respectively inserted into the corresponding positioning hole.

[0016] Preferably, the corners of both the left and right tweezer arms are rounded.

[0017] Preferably, both the left and right tweezer arms are provided with an anti-slip layer, and the anti-slip layer is made of rubber.

[0018] Preferably, the side of the left and right clamps that are close to each other is a concave arc-shaped surface, and the curvature of the arc-shaped surface is similar to the natural curvature of the middle section of the body of a standard yellow mealworm pupa.

[0019] The beneficial effects of this utility model are:

[0020] This invention, through an adjustable spring structure and supporting guide components, allows for flexible adjustment of the clamping force according to the size and fragility of the pupae, avoiding the damage or slippage caused by the fixed force of traditional tweezers. The combination of a flexible sleeve made of food-grade silicone and an arc-shaped chuck design enhances clamping stability and effectively protects the pupae's surface through elastic cushioning and increased contact area, achieving non-destructive separation. The detachable connection structure at the top of the left and right tweezer arms, along with precise guidance from positioning pins and holes, facilitates component disassembly, replacement, and maintenance. Optimized details such as rounded corners on the tweezer arms, an anti-slip layer, and anti-slip texture on the rotating blocks improve operational safety, convenience, and comfort. This invention is suitable for pupae separation during the breeding and processing of selenium-enriched mealworms, helping to improve separation efficiency and pupae integrity, and meeting the technical requirements of related industries for non-destructive pupae processing. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional structural diagram of a special forceps for non-destructive separation of selenium-enriched yellow mealworm pupae proposed in this utility model;

[0023] Figure 2 for Figure 1 Exploded view;

[0024] Figure 3 for Figure 2 A schematic diagram of the structure of part A;

[0025] Figure 4 This is a three-dimensional structural diagram of the support and guide assembly, adjustment assembly, spring, and rotating block proposed in this utility model;

[0026] Figure 5 This is a three-dimensional structural diagram of the semi-threaded bolt and nut parts proposed in this utility model.

[0027] In the diagram: 1. Left tweezer arm; 11. Right tweezer arm; 2. Left chuck; 21. Right chuck; 3. Locating pin; 31. Locating hole; 4. Semi-threaded bolt; 41. Nut; 5. Spring; 51. Mounting block; 511. T-shaped slide bar; 52. Screw; 53. Screw sleeve; 54. Rotating block; 6. Flexible sleeve. Detailed Implementation

[0028] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0029] Reference Figure 1-5 A special forceps for non-destructive separation of selenium-enriched yellow mealworm pupae, comprising a left forceps arm 1, a right forceps arm 11, a left clamp 2, a right clamp 21, a spring 5, and two flexible sleeves 6;

[0030] The left clamp 2 and the right clamp 21 are fixedly installed at the bottom of the left tweezer arm 1 and the right tweezer arm 11 respectively and are arranged symmetrically. The side of the left clamp 2 and the right clamp 21 that are close to each other is a concave arc surface, and the curvature of the arc surface is similar to the natural curvature of the middle section of the body of a standard yellow mealworm pupa. This allows the pupa to be wrapped and adhered to the surface of the pupa to the maximum extent when gripping, reducing the concentration of pressure at a single point and preventing the pupa from being squeezed and deformed or its skin from being damaged due to excessive local force. At the same time, the arc surface design can also guide the pupa to maintain a relatively stable posture during the gripping process, preventing it from rolling or shifting within the left clamp 2 and the right clamp 21, further improving the accuracy and success rate of the separation operation.

[0031] The left tweezers arm 1 and the left chuck 2, and the right tweezers arm 11 and the right chuck 21 are all integrated into one piece, which can effectively enhance the connection strength between the left tweezers arm 1 and the right tweezers arm 11 and the left chuck 2 and the right chuck 21, and prevent the chucks from loosening or falling off during long-term use, thereby extending the overall service life of the tweezers. At the same time, the integrated design can also reduce assembly steps, reduce production errors, and ensure the synchronization and stability of the left chuck 2 and the right chuck 21 during clamping operations, further ensuring the non-destructive separation effect of selenium-rich yellow mealworm pupae.

[0032] Two flexible clips 6 are respectively fitted onto the left clip 2 and the right clip 21. Both flexible clips 6 are made of food-grade silicone material, and the outer periphery of the two flexible clips 6 that are close to each other are provided with fine anti-slip textures. This can increase the friction between the clips and the pupa, prevent the pupa from slipping during the clamping process, and further reduce the pressure on the pupa's body surface through its own elastic cushioning effect, ensuring the effect of separation without damage.

[0033] The top of the left and right tweezer arms 1 and 11, which are close to each other, are detachably fixed. The top of the left and right tweezer arms 1 and 11, which are far apart from each other, are respectively provided with a circular groove and a regular polygonal groove. A semi-threaded bolt 4, extending into the regular polygonal groove, moves through the circular groove. A nut 41, threadedly connected to the semi-threaded bolt 4, is slidably installed on the inner wall of the regular polygonal groove. The outer contour of the nut 41 matches the regular polygonal groove. A cross-shaped groove is provided at the end of the semi-threaded bolt 4 away from the nut 41, facilitating the rotation of the semi-threaded bolt 4 by inserting a tool adapted to the cross-shaped groove into the groove, thus positioning the nut 41 within the regular polygonal groove. The sliding mechanism allows for a detachable and fixed connection between the tops of the left tweezers arm 1 and the right tweezers arm 11, facilitating disassembly, replacement, and maintenance of either arm when needed. Furthermore, to provide precise positioning guidance during connection and prevent uneven force distribution on the tweezers due to misalignment, which could affect clamping stability and pupa separation, positioning pins 3 are fixedly installed on the top of the sides of both the left and right tweezers arms 1 and 11. Positioning holes 31, which are compatible with the positioning pins 3, are also provided on the top of the sides of both arms 1 and 11. The two positioning pins 3 are inserted into the corresponding positioning holes 31.

[0034] Spring 5 is fixedly installed on the side of left tweezer arm 1 near right tweezer arm 11. Two parallel T-shaped slide rods 511 are fixedly installed on the side of right tweezer arm 11 near left tweezer arm 1. The same mounting block 51 is slidably installed on the two T-shaped slide rods 511. The mounting block 51 is fixedly connected to the end of spring 5 away from left tweezer arm 1, which can provide support and guidance for the end of spring 5 away from left tweezer arm 1, and form an indirect connection between it and right tweezer arm 11. It is also convenient to adjust the compression degree of spring 5 by adjusting the distance between mounting block 51 and right tweezer arm 11.

[0035] A screw sleeve 53 is fixedly installed on the mounting block 51, and a screw 52 is rotatably installed on the right tweezer arm 11. The screw 52 is threadedly connected to the screw sleeve 53. By rotating the screw 52, ​​the screw sleeve 53 and the mounting block 51 can be moved along the T-shaped slide bar 511, thereby adjusting the compression degree of the spring 5 to change the clamping force between the left tweezer arm 1 and the right tweezer arm 11, adapting to selenium-rich mealworm pupae of different sizes and fragility, and avoiding damage to the pupae due to excessive force during the separation process.

[0036] In order to facilitate manual rotation adjustment by the operator and increase the contact area with the hand during rotation, thereby improving the convenience and stability of operation, a rotating block 54 is fixedly installed at the end of the screw 52 away from the left tweezer arm 1. The outer surface of the rotating block 54 is provided with anti-slip texture, and the diameter of the rotating block 54 is larger than the diameter of the screw 52.

[0037] In this embodiment, in order to effectively prevent operators from being scratched by sharp edges during use, improve the overall grip comfort, reduce hand fatigue caused by long-term operation, and significantly increase the friction between the hand and the tweezers arm, thereby ensuring the operator's stable grip on the tweezers and preventing the pupa from falling off or being damaged due to slippage, further improving the safety and reliability of the operation process, the edges of the left tweezers arm 1 and the right tweezers arm 11 are both rounded, and both the left tweezers arm 1 and the right tweezers arm 11 are provided with an anti-slip layer, and the anti-slip layer is made of rubber.

[0038] The left tweezer arm 1 and the right tweezer arm 11 are made of the same flexible metal used in conventional tweezers.

[0039] Working principle: When in use, first align the positioning pins 3 at the top of the left tweezer arm 1 and the right tweezer arm 11 with the positioning holes 31 and insert them. Then, use a tool with a cross-shaped groove to rotate the semi-threaded bolt 4, allowing the nut 41 to slide in the regular polygonal groove, thus completing the detachable fixed connection between the left tweezer arm 1 and the right tweezer arm 11.

[0040] Then, depending on the size and fragility of the pupa, the screw 52 is adjusted by rotating the rotating block 54 with anti-slip texture, so that the screw sleeve 53 drives the mounting block 51 to move along the T-shaped slide bar 511, thereby changing the compression degree of the spring 5, and thus setting a relatively suitable clamping force.

[0041] Subsequently, the operator holds the left tweezers arm 1 and the right tweezers arm 11, which have rubber anti-slip layers and rounded corners. Using the curved surface chucks covered with food-grade silicone flexible sleeves 6, the operator aligns them with the selenium-rich mealworm pupae. By applying pressure with their fingers, the operator controls the left tweezers arm 1 and the right tweezers arm 11, using the semi-threaded bolts 4 and the positioning pins 3 as fulcrums, to move the left chucks 2 and the right chucks 21 toward each other. This allows the two flexible sleeves 6 to contact and clamp the pupae. At this time, the fine anti-slip texture on the flexible sleeves 6 increases friction to prevent slippage. Its elastic cushioning effect and curved surface design together reduce the pressure on the pupae's body surface, achieving stable and non-destructive clamping, thus completing the separation of the pupae.

[0042] If the left tweezers arm 1, right tweezers arm 11, or flexible sleeve 6 are damaged after long-term use, the corresponding parts can be disassembled and replaced and maintained by using the semi-threaded bolt 4 and nut 41 to ensure that the tweezers continue to maintain good working condition.

[0043] The above provides a detailed description of the special tweezers for non-destructive separation of selenium-enriched mealworm pupae provided by this utility model. Specific embodiments have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A special pair of forceps for non-destructive separation of selenium-enriched yellow mealworm pupae, characterized in that, It includes a left tweezer arm (1), a right tweezer arm (11), a left chuck (2), a right chuck (21), an adjustment assembly, a spring (5), a support guide assembly, and two flexible sleeves (6); The left clamp (2) and right clamp (21) are fixedly installed at the bottom of the left tweezer arm (1) and the right tweezer arm (11) respectively and are arranged symmetrically. The side of the left clamp (2) and the right clamp (21) that are close to each other is a concave arc surface. The left tweezer arm (1) and the left clamp (2) and the right tweezer arm (11) and the right clamp (21) are all integrally set. Two flexible sleeves (6) are respectively sleeved on the left clamp (2) and the right clamp (21). The top of the side of the left tweezer arm (1) and the right tweezer arm (11) that are close to each other is detachably fixed. The spring (5) is fixedly installed on the side of the left tweezer arm (1) that is close to the right tweezer arm (11). The support guide assembly is set on the side of the right tweezer arm (11) that is close to the left tweezer arm (1) and is fixedly connected to the spring (5). The adjustment assembly is set on the right tweezer arm (11) and is connected to the support guide assembly.

2. The special forceps for non-destructive separation of selenium-enriched mealworm pupae according to claim 1, characterized in that: The support guide assembly includes a mounting block (51) and two T-shaped slide bars (511). Two T-shaped slide bars (511) are fixedly installed on the side of the right tweezer arm (11) near the left tweezer arm (1). The same mounting block (51) is slidably mounted on the two T-shaped slide bars (511). The mounting block (51) is fixedly connected to the end of the spring (5) away from the left tweezer arm (1).

3. The special forceps for non-destructive separation of selenium-enriched mealworm pupae according to claim 2, characterized in that: The adjustment assembly includes a screw (52) and a screw sleeve (53). The screw sleeve (53) is fixedly installed on the mounting block (51), and the screw (52) is rotatably installed on the right tweezer arm (11). The screw (52) and the screw sleeve (53) are threadedly connected.

4. The special forceps for non-destructive separation of selenium-enriched mealworm pupae according to claim 3, characterized in that: A rotating block (54) is fixedly installed at the end of the screw (52) away from the left tweezer arm (1). The outer surface of the rotating block (54) is provided with anti-slip texture, and the diameter of the rotating block (54) is larger than the diameter of the screw (52).

5. The special forceps for non-destructive separation of selenium-enriched mealworm pupae according to claim 1, characterized in that: The top of the left tweezer arm (1) and the right tweezer arm (11) on opposite sides are respectively provided with a circular groove and a regular polygonal groove. A semi-threaded bolt (4) extending into the regular polygonal groove is movably inserted in the circular groove. A nut (41) threadedly connected to the semi-threaded bolt (4) is slidably installed on the inner wall of the regular polygonal groove. The outer contour of the nut (41) is adapted to the regular polygonal groove, and a cross-shaped groove is provided at the end of the semi-threaded bolt (4) away from the nut (41).

6. The special forceps for non-destructive separation of selenium-enriched mealworm pupae according to claim 1, characterized in that: Positioning pins (3) are fixedly installed on the top of the side of the left tweezers (1) and the right tweezers (11) that are close to each other. Positioning holes (31) that are compatible with the positioning pins (3) are opened on the top of the side of the left tweezers (1) and the right tweezers (11) that are close to each other. The two positioning pins (3) are respectively inserted into the corresponding positioning holes (31).

7. The special forceps for non-destructive separation of selenium-enriched mealworm pupae according to claim 1, characterized in that: Both flexible sleeves (6) are made of food-grade silicone material, and the outer periphery of both flexible sleeves (6) that are close to each other are provided with fine anti-slip texture.

8. The special forceps for non-destructive separation of selenium-enriched mealworm pupae according to claim 1, characterized in that: The corners of the left tweezer arm (1) and the right tweezer arm (11) are both rounded.

9. The special forceps for non-destructive separation of selenium-enriched mealworm pupae according to claim 1, characterized in that: Both the left tweezer arm (1) and the right tweezer arm (11) are provided with anti-slip layers, and the anti-slip layers are made of rubber.

10. The special forceps for non-destructive separation of selenium-enriched mealworm pupae according to claim 1, characterized in that: The curvature of the arc-shaped surface is similar to the natural curvature of the middle section of a standard mealworm pupa.

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