A silkworm cocoon turning and processing system

Abstract

The object of the present invention is to provide a cocoon turning and processing system suitable for a cocoon tray that is independent of various processing devices and can effectively protect the cocoons during the turning process, the system includes a cocoon tray, a plurality of cocooning columns extending and protruding from the bottom to the top are formed on the cocoon tray, a receiving area for accommodating the cocoons is formed between the cocooning columns, and a through opening is provided below the receiving area; it also includes a loading and conveying moving unit located in the front section, a discharging and conveying moving unit located in the rear section, and a tray turning assembly arranged between the loading and conveying moving unit and the discharging and conveying moving unit for driving the cocoon tray with the cocoons to realize an upside-down turning action; the tray turning assembly includes a tray turning frame that can rotate around a central axis fixed in the horizontal direction and an intermittent rotary drive device for driving the tray turning frame to rotate.

Description

Technical Field

[0001] The invention relates to the field of silkworm breeding equipment, in particular to a silk cocoon turning and processing system. Background Art

[0002] Silk, also known as natural silk, is a continuous, long fiber formed by the solidified silk fluid secreted by mature silkworms during mating. It is a natural fiber with a wide range of uses, including quilts, clothing, cosmetics, and health supplements. In the quilt and clothing industries, silk is an extremely lightweight natural fiber. It can deform within a certain range without damage when subjected to external forces, and then return to its original state after the force is removed. It exhibits non-caking, non-stuffy, and uniform, soft properties. Furthermore, silk's inherent breathability and moisture permeability contribute to the smooth and comfortable feel of silk products. Due to these numerous advantages of silk products, the scale of silkworm farming for silk production has continued to expand. With this rapid growth, conventional silkworm farming methods, such as manual feeding, reeling, and spinning, are no longer suitable. Consequently, a variety of automated, efficient, and auxiliary farming equipment have emerged in the silkworm farming industry, significantly improving efficiency at all stages while reducing production costs.

[0003] During silkworm breeding, separating cocoons from cocoon trays is a labor-intensive and resource-intensive process, demanding efficient cocoon separation while minimizing cocoon damage. If the cocoon trays are still laid out in a straight, flat manner during the cocoon peeling process, the cocoons cannot be quickly gathered, requiring a separate mechanism or device for transfer or capture. Therefore, equipment is typically required at some stage during the overall cocoon and silk processing process to flip the cocoon trays containing the cocoons.

[0004] As disclosed in the Chinese invention patent document with application number CN201710935085.6, the device for large-scale silkworm breeding includes: a frame; a breeding bed, which includes a cocoon frame and a bottom plate, a first rotating shaft is installed on the lower side of the bottom plate, the cocoon frame is uprightly arranged on the upper side of the bottom plate along the length direction of the bottom plate, and the cocoon frame is composed of staggered vertical rods and horizontal rods; a mulberry leaf conveying mechanism, which includes a conveyor belt and a second rotating shaft, the conveyor belt is installed on the second rotating shaft, the conveyor belt rotates laterally to transport mulberry leaves, and the second rotating shaft can be rotated axially to make the conveyor belt flip over and dump the mulberry leaves downward; a cocoon picking mechanism, which includes a guide rail and a silkworm comb, the upper part of the silkworm comb is nested in the guide rail, and the lower part extends to the breeding bed, and the silkworm comb slides along the guide rail to scrape the cocoons on the breeding bed; and a collecting trough.

[0005] Another example is the mulberry silkworm breeding device for automatically collecting cocoons disclosed in the Chinese invention patent document with application number CN201710935083.7, which includes: a frame; a breeding bed; a mulberry leaf conveying mechanism, which includes a conveyor belt and a second rotating shaft, the second driving mechanism drives the conveyor belt to rotate to transport mulberry leaves horizontally, the second rotating shaft is connected to the third driving mechanism, and the third driving mechanism drives the axial rotation of the second rotating shaft to make the conveyor belt flip over and dump the mulberry leaves downward; a cocoon picking mechanism; and a collecting mechanism, including a collecting trough and a blower, the notch of the collecting trough is provided with a trough cover to close the notch, and the blower is provided at either end of the collecting trough to supply air to the inside of the collecting trough; wherein, second guide rails are provided on both sides of the trough cover, and a second guide rail groove is correspondingly provided on the notch, and the trough cover slides into the notch to open and close the notch.

[0006] In the aforementioned mulberry silkworm breeding devices used in the mulberry silkworm breeding process, although it can meet the needs of processing some mulberry leaf fragments and excrement in the breeding process, and can also use gravity to make the separated cocoons fall, but due to the active connection between the cocoon tray and the turning mechanism in the breeding device under this structure, it cannot be applied to large-scale, streamlined production and processing lines that need to separate the cocoon tray from each processing equipment according to different stages.

[0007] In view of the above problems, the present invention provides a cocoon turning and processing system which is suitable for cocoon trays to be independent of various processing devices and can effectively protect the cocoons during the turning process. Summary of the Invention

[0008] The invention provides a cocoon turning and processing system which is suitable for cocoon trays which are independent of various processing devices and can effectively protect the cocoons during the turning process.

[0009] The above technical objectives of the present invention are achieved through the following technical solutions:

[0010] A silk cocoon turning and processing system comprises a cocoon tray, on which are formed a plurality of cocooning columns extending upward, a receiving area for accommodating silk cocoons is formed between the cocooning columns, and a through opening is provided below the receiving area; the system also comprises a loading and conveying mobile unit located at the front section, a discharging and conveying mobile unit located at the rear section, and a tray turning assembly arranged between the loading and conveying mobile unit and the discharging and conveying mobile unit for driving the cocooning tray with silk cocoons to realize an upside-down turning action; the tray turning assembly comprises a tray turning frame capable of rotating around a central axis fixed in the horizontal direction and an intermittent rotary drive device for driving the tray turning frame to rotate.

[0011] As a preferred embodiment of the present invention, a snap-fit ​​connection part for connecting with the cocoon tray is formed on the tray turning frame, and the snap-fit ​​connection parts are arranged on both sides of the tray turning frame and can be matched and connected with the matching connection parts on both sides of the cocoon tray. The snap-fit ​​connection part and the matching connection part together form a movable snap-fit ​​structure between the cocoon tray and the tray turning frame. The movable snap-fit ​​structure can connect the cocoon tray and the tray turning frame into a whole during the turning process, and can also guide the connection process before the cocoon tray and the tray turning frame are turned over, and the separation process after the turning action is completed.

[0012] As a preferred embodiment of the present invention, a hollow avoidance area is formed between the left and right sides of the tray turning frame for avoiding squeezing interference with the central cocoon forming area of ​​the cocoon forming tray.

[0013] As a preferred embodiment of the present invention, the pallet turning frame is provided with a plurality of engaging connection parts around its own rotation center axis.

[0014] As a preferred embodiment of the present invention, the turning process is divided into two stages with the vertical plane passing through the central axis of rotation of the tray turning frame as the boundary, the snap-fit ​​connection portion includes a first supporting surface for supporting the cocoon tray during the previous turning stage, and a second supporting surface for supporting the cocoon tray during the subsequent turning stage; the snap-fit ​​connection portion and the mating connection portion are mated and connected by plugging, and after the snap-fit ​​connection portion and the mating connection portion are plugged into each other, a surplus space is formed for the cocoon tray to swing.

[0015] As a preferred embodiment of the present invention, it also includes a supporting platform for supporting the pallet turning frame, and both sides of the pallet turning frame protrude outward along the central axis and extend to form a rotating connection part for connecting with the supporting frame; the intermittent rotation drive device is arranged on one side of the pallet turning frame, which includes a driving motor and a control module, and the output end of the driving motor is connected to the rotating connection part on one side of the pallet turning frame, and the control module is electrically connected to the driving motor to realize the control of the operation of the driving motor.

[0016] As a preferred embodiment of the present invention, a buffer component is formed on the tray turning frame for reducing collision vibration generated during the connection process between the tray turning frame and the cocoon forming tray.

[0017] As a preferred embodiment of the present invention, a position-limiting connection structure is formed on the tray turning frame for connecting the tray turning frame with the cocoon tray during the turning process.

[0018] As a preferred embodiment of the present invention, the loading conveying moving unit located at the front section and the discharging conveying moving unit located at the rear section both adopt a roller conveyor belt structure.

[0019] As a preferred embodiment of the present invention, the height of the upper conveying surface of the conveyor belt in the loading conveying mobile unit and the discharging conveying mobile unit is the same as the height of the rotation center axis of the pallet turning frame.

[0020] In summary, the present invention can achieve the following multiple beneficial effects:

[0021] 1. In the silkworm cocoon turning and processing system provided in the embodiment of the present invention, the cocoon tray is independent of other devices in the system and can be stably connected and fixed to the turning tray assembly in the system during the turning process. It can continuously and coherently turn and process multiple urban construction trays containing silkworm cocoons, and is suitable for large-scale, batch cocoon processing production lines.

[0022] 2. In the cocoon turning and processing system given in the embodiment of the present invention, the snap-fit ​​connection portion of the turning tray assembly connected to the cocoon tray can not only achieve a stable connection between the cocoon tray and the tray turning frame during the turning process, but also play a stable and reliable guiding role in the process of the cocoon tray initially entering the tray turning frame and completing the turning and leaving the tray turning frame. Its structure is simple and stable and reliable.

[0023] 3. In the cocoon turning processing system provided in the embodiment of the present invention, the cocoon forming area of ​​the cocoon forming tray is located in the middle of the tray and protrudes upward, while the snap-fit ​​connection parts on the tray turning frame connected thereto are located on both sides. Whether before or after the tray is turned over, it can effectively prevent external rigid components from contacting and colliding with the cocoons formed on the tray, thereby preventing the cocoons and silk from being damaged.

[0024] 4. In the cocoon turning processing system provided in the embodiment of the present invention, a limited position connection structure is formed between the cocoon tray and the tray turning frame. This structure can automatically complete the snap connection between the cocoon tray and the first supporting surface on the tray turning frame under the action of gravity during the process of the tray turning frame rotating and lifting the cocoon tray upward; as the tray turning frame rotates, when the tray turning frame rotates the cocoon tray past the rotation center, the cocoon tray can automatically complete the separation from the first supporting surface and snap connection with the second supporting surface on the other side under the action of gravity. Without the need to set up an additional motion control mechanism, it can ensure that the cocoon tray can be stably connected to the frame body when the tray turning frame rotates at a fast speed or is instantly impacted or stuck and stops rotating, so as to avoid its separation and throwing out, which not only protects the cocoons and silk, but also improves the safety of the overall operation of the system.

[0025] 5. In the cocoon turning and processing system given in the embodiment of the present invention, the locking connection part and the matching connection part are connected by plugging, and the locking connection part and the matching connection part are plugged into each other to form a residual space for the cocoon tray to swing. This structure enables the cocoon tray to be lifted and turned over, and the tray as a whole is first lifted up on one side and gradually enters an inclined locking state. Similarly, when the cocoon tray is turned over and placed on the discharge conveying moving unit on the rear side, one side is first in contact with the upper surface of the conveyor belt, and then gradually separated from the tray turning frame with the friction of the conveyor belt, so that the cocoon is less impacted during the entire turning process, avoiding the cocoon from falling off and being damaged or affecting the normal operation of other components during the turning process. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a side view of the overall structural layout of the cocoon turning and processing system;

[0027] Figure 2 This is a top view of the overall structural layout of the cocoon turning and processing system;

[0028] Figure 3 A side view schematic diagram of a tray turning assembly in a silk cocoon turning processing system;

[0029] Figure 4 A schematic top view of a tray turning assembly in a cocoon turning processing system;

[0030] Figure 5 This is a schematic diagram of the cocoon tray when it is initially moved into the tray turning rack under the action of the loading and conveying moving unit;

[0031] Figure 6 This is a schematic diagram of the cocoon tray being lifted upward as the tray turning frame rotates;

[0032] Figure 7 This is a schematic diagram of the cocoon tray rotating on the tray turning rack and crossing the central axis of rotation;

[0033] Figure 8 This is a schematic diagram of the cocoon tray as a whole when it is turned over along with the turning frame and connected to the discharge conveying moving unit;

[0034] Figure 9 This is a partially enlarged schematic diagram of the structure in which the cocoon tray is connected to the tray turning frame on one side through a movable locking structure;

[0035] Figure 10 This is a partially enlarged schematic diagram of the structure in which the cocoon tray is connected to the tray turning frame on the other side through a movable locking structure;

[0036] Figure 11 This is a schematic diagram of the structure of the cocoon tray from a top view;

[0037] Figure 12 This is a partially enlarged schematic diagram of the connection structure between the cocoon tray and the cocoon.

[0038] In the picture:

[0039] A——loading and conveying mobile unit;

[0040] B——discharging conveying mobile unit;

[0041] C - Pallet turning assembly;

[0042] D – cocoon tray;

[0043] E——supporting stand;

[0044] 1--Pallet turning rack;

[0045] 2 - intermittent rotary drive;

[0046] 3 - movable engaging structure, 3a - engaging connection portion, 3b - mating connection portion, 301 - first supporting surface, 302 - second supporting surface;

[0047] 4 – hollow avoidance zone;

[0048] 5——Limited connection structure. DETAILED DESCRIPTION

[0049] The following specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the embodiments as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

[0050] This solution is achieved through the following technical means:

[0051] Embodiment: In this embodiment, a cocoon turning and processing system is provided, which is suitable for a cocoon tray D that is independent of various processing devices and can effectively protect the cocoons during the turning process.

[0052] Specifically, a special cocoon tray D is used in the cocoon turning and processing system. Figure 11 And attached Figure 12The bottom edge of the cocoon tray D is supported on the top of the positioning member. The cocoon tray D has evenly distributed openings that run through from top to bottom. The edges of these openings are provided with a plurality of upright cocooning columns. By utilizing the upward climbing nature of silkworms, the silkworms crawl from the bottom block-shaped breeding plate toward the cocoon tray D, pass through the through openings, and then climb onto the cocoon tray D. They spin silk between adjacent cocooning columns and form cocoons. Taking the accompanying drawings as an example, the cocooning columns above the cocooning grid surround and form a square grid, and the cocoons that are ultimately formed are all located within this square grid-like containment area.

[0053] As part of the automated cocoon stripping system, the cocoon turning and processing system primarily flips and inverts the cocoon tray D, which is positioned horizontally and contains cocoons, to facilitate the removal of the cocoons from the cocoon tray D for collection and processing. The system comprises three components, from front to back: a loading conveyor unit A, a tray turning assembly C, and a discharging conveyor unit B. The loading conveyor unit A and the discharging conveyor unit B are structurally identical, distinguished by their names due to their different relative placement and functional roles. Specifically, the loading conveyor unit A is a roller conveyor belt structure, primarily comprising a pair of synchronous rollers at the front and rear ends that rotate at the same speed, with a conveyor belt looped around each of the synchronous rollers. It is important to note that the synchronous rollers are cylindrical at both ends, with large radial dimensions, connected by a central connecting shaft. Two rubber conveyor belts loop around the same side of each roller, creating a hollow escape zone 4 within the loading conveyor unit A. Corresponding to the loading and conveying mobile unit A, the two sides of the cocoon tray D include mating connection portions 3b that extend outwards to form projections on both sides, allowing it to be installed as a whole between the two conveyor belts. Due to the presence of the hollow avoidance area 4, whether the cocoon tray D is placed upright or turned upside down, its upwardly extending cocoon column portion and the cocoons connected to the cocoon column will not come into contact with the conveyor belt, which can effectively avoid damage to the silk and, of course, prevent the cocoons from separating and falling off relative to the cocoon tray D during transportation. Since the loading and conveying mobile unit A and the discharging and conveying mobile unit B are similar in structure, it is only necessary to note that the movement direction of the conveyor belts on the two units is the same, so they will not be described in detail here.

[0054] As a crucial component of the cocoon turning and processing system, the pallet turning assembly C is located between the aforementioned loading and unloading conveyor units A and B, engaging both units. Specifically, the pallet turning assembly C includes a pallet turning frame 1 that rotates about a horizontally fixed central axis and an intermittent rotary drive device 2 that drives the pallet turning frame 1.

[0055] Taking the structure shown in the accompanying drawings of this embodiment as an example, the pallet turning frame 1 is a structure with two cross-shaped fork-like structures on both sides, connected at the intersection center by a connecting shaft. The pallet turning frame 1 is rotatably mounted on the supporting platform E below, capable of self-rotation around a fixed central axis. An intermittent rotation drive device 2 is connected and installed on the side of the pallet turning frame 1. Specifically, the intermittent rotation drive device 2 includes a drive motor and a control module. The output shaft of the drive motor is connected to the pallet turning frame 1 via a coupling. The control module enables the drive motor to output power at regular intervals, thereby achieving continuous pause-rotation alternating operation.

[0056] The tray turning frame 1 has an outwardly extending protrusion formed with a snap-fit ​​connection portion 3a for connecting with the cocoon tray D. The turning process is divided into two independent stages, separated by a vertical plane defined by the central axis of the tray turning frame 1. The snap-fit ​​connection portion 3a includes a first supporting surface 301 for supporting the cocoon tray D during the first turning stage, and a second supporting surface 302 for supporting the cocoon tray D during the second turning stage. The snap-fit ​​connection portion 3a and the mating connection portion 3b are connected by a plug-in connection. In this embodiment, each arm extending outward from the center of rotation of the cross-shaped fork structure forms a snap-fit ​​connection portion 3a. Four snap-fit ​​connections 3a are formed around the centerline of the cross-shaped fork structure, with adjacent snap-fit ​​connections 3a positioned perpendicular to each other. At this time, the engaging connection part 3 a on the tray turning frame 1 cooperates with the matching connection part 3 b on the cocoon tray D to form a movable engaging structure 3 .

[0057] Specifically, in the aforementioned pallet turning frame 1 having a cross-shaped fork structure, one of the engaging connecting portions 3a can be arranged by a pair of parallel metal rods. In this case, a long strip notch is formed between the two metal rods, which is recessed and extends inward. The aforementioned first supporting surface 301 and second supporting surface 302 are both located on the long strip notch. It should be noted that the width of the long strip notch is slightly larger than the thickness of the matching connecting portion 3b formed on the cocoon tray D, so that after the engaging connecting portion 3a and the matching connecting portion 3b are plugged into each other, there is still a margin for the cocoon tray D to swing. That is, when the cocoon tray D enters the pallet turning frame 1 under the action of the conveyor belt, the matching connecting portion 3b slides into the interior of the long strip notch, but the cocoon tray D is not completely engaged and fixed, and can swing within a certain angle range.

[0058] In this configuration, when a cocoon tray D, lying upright, is placed in the loading conveyor unit, its mating connection 3b gradually enters the engaging connection 3a of the tray turning frame 1 as the conveyor belt moves forward, until its front end comes into contact with the bottom of the elongated slot, preventing further advancement. It should be noted that at this point, the center of gravity of the tray turning frame 1 remains outside the elongated slot. Under the control of the control module, the drive motor rotates the tray turning frame 1. Due to the action of the engaging connection 3a on the mating connection 3b, one side of the cocoon tray D is initially lifted upward, causing it to assume a tilted position. The upper surface of the front end of the cocoon tray D then comes into contact with the upper second supporting surface 302 of the slot defined in the cocoon tray D, while the portion near the center of the cocoon tray D comes into contact with the lower first supporting surface 301 of the slot defined in the cocoon tray D. In other words, the cocoon tray D is lifted upward from a partial position to the entirety as the tray turning frame 1 moves. During the lifting process, the cocoon tray D is subjected to less impact, which can effectively prevent the cocoons from falling off.

[0059] As the tray turning frame 1 continues to rotate, the cocoon tray D will be rotated to a position that passes the central axis of the tray turning frame 1. At this time, because the aforementioned long strip notch is slightly wider and fits the connecting portion 3b, under the action of gravity, the cocoon tray D will flip to the other side. At this time, the cocoon tray D is engaged and connected to the tray turning frame 1 in a state opposite to that in the previous turning stage. Specifically, at this time, the aforementioned second supporting surface 302 is located at the bottom to play a supporting role, while the first supporting surface 301 is located at the top to play a supporting role. It should also be noted that the contact surface between the cocoon tray D and the tray turning frame 1 needs to have sufficient friction to prevent the cocoon tray D from sliding outward relative to the tray turning frame 1 and falling when it is not lifted.

[0060] As the tray turning frame 1 continues to rotate, the outer end of the cocoon tray D, which has already been completely flipped upside down, gradually comes into contact with the upper surface of the conveyor belt on the discharge conveyor unit located behind it. Due to the movement of the conveyor belt and the rotation of the tray turning frame 1, the contact surface between the cocoon tray D and the conveyor belt gradually increases. Simultaneously, due to the friction, the cocoon tray D gradually moves outward, separating from the tray turning frame 1, completing the overall flipping action. Because this separation process of the cocoon tray D is also a gradual process, the impact and vibration transmitted to the cocoon tray D is also relatively small, thereby protecting the cocoons.

[0061] Preferably, in a relatively fast operating mode, to prevent the cocoon tray D from slipping outward or even being thrown outward due to a momentary stall, a change in rotational speed, or insufficient friction between the tray turning frame 1 and the cocoon tray D, the tray turning frame 1 is provided with a position-limiting connection structure 5 for connecting the tray turning frame 1 to the cocoon tray D during the turning process. Specifically, the position-limiting connection structure 5 includes grooves formed on the first and second supporting surfaces 301, 302, and raised portions extending upward and downward, respectively, formed on the ends of the mating connection portion 3b. Regardless of whether the cocoon tray D is in the first or second turning stage, the portion of the cocoon tray D near the bottom of the elongated notch tilts upward, allowing the raised portion thereto to engage with the groove, forming a mutually engaging state. The position-limiting connection structure 5 provides a force directed toward the center of rotation for the cocoon tray D during rotation, effectively preventing it from being thrown out and enhancing the safety of the turning operation. In addition, the position-limiting connection structure 5 also has the effect of automatically completing the snap-in connection between the two parts under the action of gravity at different flipping stages, without the need for additional control modules or components, and is very stable and efficient.

[0062] Further preferably, a buffer component is formed on the tray turning frame 1 to reduce the impact vibration generated during the connection between the tray turning frame 1 and the cocoon tray D. For example, in this embodiment, a flexible cushion layer made of rubber or foam material can be installed at the bottom of the long slot opened on the tray turning frame 1 and on the connecting shaft between the cross-shaped fork members on both sides to reduce the vibration and impact generated when the cocoon tray D is connected to the tray turning frame 1, thereby preventing the cocoons from falling off the tray.

[0063] In this embodiment, the structure of the tray turning frame 1 adopts a cross shape. Of course, according to different working line operating speeds and the structural shape of the cocoon tray D, it can also adopt other similar structures such as a M shape that are evenly spaced around the central axis.

[0064] As for the aforementioned snap-fit ​​connection structure, in the specific implementation given in this embodiment, the protrusion is provided on the cocoon tray D and the corresponding notch is provided on the tray turning frame 1. As an alternative to this structure, it is easy to think of exchanging the positions of the two parts of the structure, and of course, a similar movable snap-fit ​​structure 3 with the above-mentioned functions can also be formed.

[0065] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A silk cocoon turning and processing system, characterized by: The invention relates to a cocoon tray (D), wherein a plurality of cocooning columns extending upward are formed on the cocoon tray (D), a receiving area for accommodating cocoons is formed between the cocooning columns, and a through opening is provided below the receiving area; the invention also comprises a loading conveying moving unit (A) located at the front section, a discharging conveying moving unit (B) located at the rear section, and a tray turning assembly (C) arranged between the loading conveying moving unit (A) and the discharging conveying moving unit (B) for driving the cocoon tray (D) with cocoons to realize an upside-down turning action; the tray turning assembly (C) comprises a tray turning frame (1) capable of rotating around a central axis fixed in a horizontal direction, and an intermittent rotary drive device (2) for driving the tray turning frame (1) to rotate; The tray turning frame (1) is provided with a snap-fit ​​connection portion (3a) for connecting with the cocoon tray (D). The snap-fit ​​connection portion (3a) is arranged on both sides of the tray turning frame (1) and can be matched with the matching connection portion (3b) on both sides of the cocoon tray (D). The snap-fit ​​connection portion (3a) and the matching connection portion (3b) together form a movable snap-fit ​​structure (3) between the cocoon tray (D) and the tray turning frame (1). The movable snap-fit ​​structure (3) can connect the cocoon tray (D) and the tray turning frame (1) into a whole during the turning process, and can also play a guiding role in the connection process before the turning action of the cocoon tray (D) and the tray turning frame (1) and the separation process after the turning action is completed. The turning process is divided into two stages with a vertical plane passing through the central axis of rotation of the tray turning frame (1) as a boundary, and the snap-fit ​​connection portion (3a) comprises a first supporting surface (301) for supporting the cocoon tray (D) during the previous turning stage, and a second supporting surface (302) for supporting the cocoon tray (D) during the next turning stage; the snap-fit ​​connection portion (3a) and the matching connection portion (3b) are connected in a plug-in manner, and after the snap-fit ​​connection portion (3a) and the matching connection portion (3b) are plugged into each other, a margin space is formed for the cocoon tray (D) to swing; A position limiting connection structure (5) is formed on the tray turning frame (1) for connecting the tray turning frame (1) with the cocoon forming tray (D) during the turning process; The position-limiting connection structure (5) comprises grooves formed on the first supporting surface (301) and the second supporting surface (302), and protrusions formed on the end portions of the matching connection portion (3b) and extending upward and downward, respectively.

2. The silkworm cocoon turning and processing system according to claim 1, characterized in that: A hollow avoidance area (4) is formed between the left and right sides of the tray turning frame (1) to avoid squeezing interference with the central cocoon forming area of ​​the cocoon forming tray (D).

3. The silk cocoon turning and processing system according to claim 1, characterized in that: The tray turning frame (1) is provided with a plurality of snap-fit ​​connection parts (3a) around its own rotation center axis.

4. The silk cocoon turning and processing system according to claim 1, characterized in that: It also includes a support stand (E) for supporting the pallet turning frame (1), and both sides of the pallet turning frame (1) protrude outward along the central axis to form a rotary connection portion for connecting to the support stand (E); the intermittent rotary drive device (2) is arranged on one side of the pallet turning frame (1), and includes a drive motor and a control module, the output end of the drive motor is connected to the rotary connection portion on one side of the pallet turning frame (1), and the control module is electrically connected to the drive motor to realize the control of the operation of the drive motor.

5. The silk cocoon turning and processing system according to claim 2, characterized in that: A buffer component is formed on the tray turning frame (1) for alleviating collision vibrations generated during the connection process between the tray turning frame (1) and the cocoon forming tray (D).

6. The silk cocoon turning and processing system according to claim 5, characterized in that: The loading conveying moving unit (A) located at the front section and the discharging conveying moving unit (B) located at the rear section both adopt a roller conveyor belt structure.

7. The silk cocoon turning and processing system according to claim 6, characterized in that: The height of the upper conveying surface of the conveyor belts in the loading conveying mobile unit (A) and the discharging conveying mobile unit (B) is the same as the height of the rotation center axis of the pallet turning frame (1).

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