Spacing adjustment mechanism, freeze-thaw device and control method thereof

Abstract

The present invention belongs to the field of freeze-thaw technology, and discloses a spacing adjustment mechanism, a freeze-thaw device and a control method thereof, wherein the spacing adjustment mechanism includes a connecting component, a displacement adjustment component and a plurality of groups of fine-tuning components, wherein the displacement adjustment component includes a first driving member and a linkage member, wherein the first driving member is transmission-connected to a driving connecting member, wherein the linkage member is movably connected to a fixed connecting member, a movable connecting member and a driving connecting member, wherein the first driving member can drive the driving connecting member of the linkage member to move in a first direction, and the driving connecting member drives at least one movable connecting member to move in a first direction through the linkage member; wherein each of the support members is correspondingly connected to a fine-tuning component, and is used to drive the support member to move in a first direction relative to the corresponding connecting member. The present invention increases the cooling area of ​​the product to be frozen and thawed, thereby being able to improve the cooling speed and cooling efficiency of the freeze-thaw device using the spacing adjustment mechanism, and has a higher freezing and thawing efficiency.

Description

Technical Field

[0001] The present invention relates to the field of refrigeration technology, and in particular to a spacing adjustment mechanism, a freeze-thaw device and a control method thereof. Background Art

[0002] The freeze-thaw device is used to freeze and thaw products to meet the corresponding functions of the products. In order to exert the freeze-thaw effect, the freeze-thaw device is often installed with a multi-layer structure similar to a refrigerator.

[0003] In the prior art, the freeze-thaw device includes a box body and a multi-layer refrigeration plate arranged in the box body. In order to facilitate the freeze-thaw bag to be placed in the refrigeration space between the refrigeration plates, the distance between the refrigeration plates is usually greater than the thickness of the freeze-thaw bag, and the spacing between the refrigeration plates is usually fixed. When the freeze-thaw bag is located in the refrigeration space, only one side can contact the refrigeration plate, resulting in a small contact area between the freeze-thaw bag and the refrigeration plate, making it difficult to exert the best cooling speed of the freeze-thaw device, resulting in the freeze-thaw bag in the prior art. The cooling speed and cooling efficiency in the freeze-thaw device are both low, and the freeze-thaw efficiency needs to be improved. Summary of the invention

[0004] The object of the present invention is to provide a spacing adjustment mechanism, a freeze-thaw device and a control method thereof, so as to solve the problem of low freeze-thaw efficiency existing in the prior art.

[0005] As conceived above, the technical solution adopted by the present invention is:

[0006] The spacing adjustment mechanism comprises:

[0007] A connection assembly, comprising a plurality of connection members and a plurality of support members that are movably connected in a one-to-one correspondence, wherein the plurality of connection members are arranged at intervals in a first direction, and the support members are used to support the refrigeration plate;

[0008] A displacement adjustment component, comprising a first driving member and a linkage member, wherein the plurality of connecting members comprise a fixed connecting member, a driving connecting member and at least one movable connecting member, wherein the movable connecting member is arranged between the fixed connecting member and the driving connecting member in the first direction, wherein the first driving member is in transmission connection with the driving connecting member, wherein the linkage member is movably connected with the fixed connecting member, the movable connecting member and the driving connecting member, wherein the first driving member can drive the driving connecting member to move in the first direction, and wherein the driving connecting member drives at least one of the movable connecting members to move in the first direction through the linkage member;

[0009] A fine-tuning assembly, each of the connecting members is provided with a fine-tuning assembly, and the fine-tuning assembly is used to drive the supporting member to move relative to the connecting member in the first direction.

[0010] Optionally, the fine-tuning assembly includes a second driving member and a fine-tuning screw, the second driving member is arranged on the connecting member, the supporting member is provided with a first screw hole, the fine-tuning screw extends along the first direction and is threadedly connected to the first screw hole; the second driving member is drivingly connected to the fine-tuning screw, and drives the fine-tuning screw to rotate so that the supporting member moves in the first direction.

[0011] Optionally, the fine-tuning assembly further comprises a first transmission belt and a second transmission belt, and one fine-tuning screw is respectively provided at both ends of each of the supporting members;

[0012] The first transmission belt is drivingly connected to the output end of the second driving member and one of the fine-tuning screws, and the second transmission belt is drivingly connected between the two fine-tuning screws to enable the two fine-tuning screws to rotate synchronously.

[0013] Optionally, the connecting member is provided with a first sliding groove extending along the first direction, and the supporting member is provided with a sliding portion matching with the first sliding groove, and the sliding portion is slidably disposed in the first sliding groove.

[0014] Optionally, the spacing adjustment mechanism further includes a limiting component, the linkage member is a retractable scissor frame structure, and the limiting component is used to limit the extension and retraction range of the linkage member to limit the minimum distance between two adjacent connecting members.

[0015] Optionally, the limit assembly includes a plurality of limit groups arranged at intervals along the first direction and connected to the linkage member, each of the limit groups includes a limit plate and two sliding members, the limit plate is provided with two second slide grooves corresponding to the two sliding members one by one, the second slide groove extends along the second direction, the sliding member can slide in the second slide groove along the extension direction of the second slide groove, the two sliding members are arranged one by one at the two ends of the linkage member in the second direction; the second direction is perpendicular to the first direction.

[0016] A freeze-thaw device, comprising the spacing adjustment mechanism as described above;

[0017] The freeze-thaw device further comprises a shell and a refrigeration plate disposed in the shell, the connection assembly, the linkage member and the fine-tuning assembly are all disposed in the shell, and the refrigeration plate is connected to the support member;

[0018] The freeze-thaw device also includes a controller, which is connected to the first driving member and the fine-tuning component and is used to control the opening and closing of the first driving member and the fine-tuning component.

[0019] Optionally, the freeze-thaw device further comprises a horizontal reciprocating mechanism, which is connected to the shell and is used to drive the shell to reciprocate in a horizontal direction;

[0020] The controller is connected to the horizontal reciprocating mechanism and is used to control the opening and closing of the horizontal reciprocating mechanism.

[0021] Optionally, the freeze-thaw device further comprises a pressure detection component, and each of the refrigeration plates is provided with the pressure detection component on both sides in the first direction;

[0022] The pressure detection component is connected to the controller, and the controller is used to control the opening and closing of the fine-tuning component according to the detection result of the pressure detection component.

[0023] Optionally, the freeze-thaw device further comprises a side support assembly, and at least one side of the refrigeration plate is connected to the side support assembly;

[0024] The side support assembly comprises a first side support plate and a second side support plate connected vertically, the first side support plate is connected to the refrigeration plate, and the second side support plate is provided with a through hole;

[0025] A push piece is provided in the through hole; the inner wall of the shell is provided with a third slide groove extending along the first direction corresponding to the side support assembly, the second side support plate is slidably arranged in the third slide groove, and the push piece can abut against the groove wall of the third slide groove.

[0026] Optionally, the freeze-thaw device also includes a delivery hose and a plurality of hose regulators; the delivery hose is connected to the refrigeration plate and can deliver a medium into the refrigeration plate; the plurality of hose regulators are all arranged on the inner wall of the shell, the delivery hose is passed through the hose regulator, and the hose regulator has a clamping state and an open state. In the clamping state, the hose regulator can clamp the delivery hose, and in the open state, the delivery hose can move axially relative to the hose regulator.

[0027] A control method for a freeze-thaw device, applied to the freeze-thaw device as described above, comprises the following steps:

[0028] S100, the controller controls the first driving member to start, so that the first driving member drives the driving connecting member of the connecting assembly to move in a direction close to the fixed connecting member, and drives at least one movable connecting member to move in a direction close to the fixed connecting member through the linkage member;

[0029] S200, when the distance between two adjacent connecting members reaches the minimum distance, controlling the first driving member to close;

[0030] S300, the controller controls the fine-tuning component to move, and the fine-tuning component drives the supporting member connected thereto to move so that two adjacent refrigeration plates approach each other in the first direction, so that both sides of the product to be frozen and thawed in the first direction are in contact with the refrigeration plates.

[0031] Optionally, the freeze-thaw device includes a pressure detection component, and step S300 includes the following steps:

[0032] S301, the controller controls the second driving member of the fine-tuning component to start, and obtains in real time through the pressure detecting member the pressure data applied by the object in contact with the pressure detecting member to the pressure detecting member;

[0033] S302, determining whether the pressure data reaches a preset pressure value, if so, controlling the second driving member to be turned off, if not, maintaining the second driving member in a started state.

[0034] Beneficial effects of the present invention:

[0035] The present invention provides a spacing adjustment mechanism, a freeze-thaw device and a control method thereof. The multiple connecting parts of the connecting assembly include a fixed connecting part, a driving connecting part and a plurality of movable connecting parts. The first driving part of the displacement adjustment assembly drives the driving connecting part among the multiple connecting parts to move in the first direction. While the driving connecting part moves in the direction close to the fixed connecting part, it drives the linkage part to act, so that the linkage part drives the multiple movable connecting parts to move in the direction close to the fixed connecting part, so as to roughly adjust the distance between two adjacent refrigeration plates and improve the efficiency of distance adjustment; the fine-tuning assembly is used to drive the support member to move in the first direction relative to the corresponding connecting part, so that the distance between two adjacent refrigeration plates in the first direction can be fine-tuned, so that the upper and lower surfaces of the product to be frozen and thawed can contact the refrigeration plate without damaging the product to be frozen and thawed, thereby increasing the cooling area of ​​the product to be frozen and thawed, and thus the cooling speed and cooling efficiency of the freeze-thaw device using the spacing adjustment mechanism can be improved, and the freeze-thaw efficiency is relatively high.

[0036] Moreover, by combining large displacement motion with micro displacement adjustment of two-stage transmission, and using distributed pressure detection parts on the refrigeration plate to measure pressure, the optimal contact and safety between the refrigeration plate and the product to be frozen and thawed are ensured, and the load of the refrigeration plate is dispersed by distributed friction support. The present invention also adopts direct cooling instead of refrigeration oil to further improve the freeze-thaw efficiency. Furthermore, the spacing between two adjacent refrigeration plates in the present invention can be infinitely adjusted, so that the freeze-thaw device can be applied to freeze-thaw bags of different sizes, with high flexibility, strong versatility and wide application range.

[0037] In addition, by setting up a horizontal reciprocating mechanism to realize the movement of the shell in multiple directions on the horizontal plane, on the one hand, it can improve the medium in the refrigeration plate to fully absorb the heat on the refrigeration plate, and on the other hand, it can improve the heat exchange between the product to be frozen and thawed and the refrigeration plate, thereby further increasing the freezing and thawing effect.

[0038] It should also be emphasized that the setting of the hose regulator can, on the one hand, flexibly plan the layout of the conveying hose, and adjust the tensioning length, redundancy, etc. of the conveying hose through the compression device of the hose regulator during movement to reduce the winding torque. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0040] Figure 1 The structure of the spacing adjustment mechanism provided by the embodiment of the present invention is shown in FIG. Figure 1 .

[0041] Figure 2 The structure of the spacing adjustment mechanism provided by the embodiment of the present invention is shown in FIG. Figure 2 .

[0042] Figure 3 The structure of the spacing adjustment mechanism provided by the embodiment of the present invention is shown in FIG. Figure 3 .

[0043] Figure 4 It is a schematic diagram of the structure of the fine-tuning component provided in an embodiment of the present invention.

[0044] Figure 5 The structure of the freeze-thaw device provided in the embodiment of the present invention is shown in FIG. Figure 1 .

[0045] Figure 6 1 is an exploded view of a freeze-thaw device provided in an embodiment of the present invention.

[0046] Figure 7 Schematic diagram of a side support assembly provided in an embodiment of the present invention.

[0047] Figure 8 It is a schematic diagram of the structure of a refrigeration plate provided in an embodiment of the present invention.

[0048] Fig. 9 The structure diagram of the horizontal reciprocating mechanism provided by the embodiment of the present invention is Figure 1 .

[0049] Fig.10 The structure diagram of the horizontal reciprocating mechanism provided by the embodiment of the present invention is Figure 2 .

[0050] Fig.11 The structure of the freeze-thaw device provided in the embodiment of the present invention is shown in FIG. Figure 2 .

[0051] Fig.12 It is a structural schematic diagram of a hose regulator provided by an embodiment of the present invention.

[0052] In the figure:

[0053] 1. Connecting assembly; 11. Connecting member; 111. Fixed connecting member; 112. Driving connecting member; 113. Active connecting member; 114. First slide groove; 115. Mounting plate; 12. Support member; 121. First screw hole; 122. Sliding part; 2. Displacement adjustment assembly; 21. First driving member; 22. Transmission member; 3. Fine adjustment assembly; 31. Second driving member; 32. Fine adjustment screw; 33. First transmission belt; 34. Second transmission belt; 4. Linkage member; 41. Connecting rod; 42. First rotating shaft; 43. Second rotating shaft; 5. Limiting assembly; 51. limit plate; 511. second slide groove; 52. sliding member; 10. shell; 101. third slide groove; 20. refrigeration plate; 30. horizontal reciprocating mechanism; 301. third driving member; 302. connecting rod; 303. slider; 40. pressure detection member; 50. side support assembly; 501. first side support plate; 502. second side support plate; 5021. through hole; 503. push member; 60. base; 601. fourth slide groove; 70. hose regulator; 701. clamp; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0054] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the present invention are further described below in conjunction with the accompanying drawings and through specific implementation methods. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for the convenience of description, only the parts related to the present invention are shown in the accompanying drawings, not all.

[0055] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0056] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] In the present invention, unless otherwise clearly stipulated and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. In the description of this embodiment, unless otherwise specified, "multiple" specifically refers to two or more.

[0058] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0059] It should be noted that when an element is referred to as being “fixed to” or “disposed on” another element, it may be directly on the other element or there may be a central element.

[0060] On the first aspect, the present embodiment provides a spacing adjustment mechanism, which can be used in a freeze-thaw device to adjust the distance between two adjacent refrigeration plates so that the refrigeration plates on both sides of the product to be frozen and thawed (i.e., the freeze-thaw bag) can contact the product to be frozen and thawed, thereby increasing the refrigeration area of ​​the product to be frozen and thawed, improving the cooling speed and cooling efficiency of the product to be frozen and thawed, and thereby improving the refrigeration efficiency.

[0061] For example, Figure 1 As shown, the spacing adjustment mechanism includes a connecting component 1, a displacement adjustment component 2 and a fine-tuning component 3.

[0062] The connection assembly 1 includes a plurality of connection members 11 and a plurality of support members 12. The plurality of connection members 11 are arranged at intervals along the first direction X, the plurality of support members 12 correspond to the plurality of connection members 11 one by one, and each support member 12 is movably connected to the corresponding connection member 11, so that the support member 12 can move relative to the connection member 11. In this embodiment, the support member 12 is used to support the refrigeration plate 20. In some optional embodiments, the support member 12 is connected to the refrigeration plate 20, so that when the support member 12 moves, the refrigeration plate 20 can be driven to move.

[0063] For example, Figure 1 As shown, the displacement adjustment assembly 2 includes a first driving member 21 and a linkage member 4. The plurality of connectors 11 include a fixed connector 111, a driving connector 112 and at least one movable connector 113, and the movable connector 113 is arranged between the fixed connector 111 and the driving connector 112 in the first direction X. For example, the fixed connector 111 can be fixed, for example, the fixed connector 111 can be fixedly connected to the housing 10 of the freeze-thaw device. Optionally, the fixed connector 111 and the driving connector 112 in this embodiment are each provided with one.

[0064] In this embodiment, the first driving member 21 is drivingly connected to the driving connecting member 112, and is used to drive the driving connecting member 112 to move in the first direction X, so that the driving connecting member 112 moves closer to or away from the fixed connecting member 111. Exemplarily, the displacement adjustment component 2 may also include a transmission member 22, the first driving member 21 is drivingly connected to the transmission member 22, and the transmission member 22 is connected to the driving connecting member 112 to transmit power to the driving connecting member 112. The linkage member 4 is movably connected to the fixed connecting member 111, the movable connecting member 113 and the driving connecting member 112. Exemplarily, when the first driving member 21 drives the transmission member 22 to move, the transmission member 22 drives the driving connecting member 112 to move in the first direction X; or, the first driving member 21 can directly drive the driving connecting member 112 to move in the first direction X, which is not limited in this embodiment. When the driving connecting member 112 moves in the first direction X, the driving connecting member 112 drives the multiple movable connecting members 113 to move in the first direction X through the linkage member 4 to adjust the distance between two adjacent connecting members 11 in the first direction X, thereby realizing the adjustment of the distance between two adjacent supporting members 12 in the first direction X, thereby realizing the adjustment of the distance between two adjacent refrigeration plates 20 in the first direction X, so that the distance between the refrigeration plates 20 can be smaller, and then the adjacent refrigeration plates 20 can all contact the sides of the product to be frozen and thawed, thereby improving the refrigeration efficiency.

[0065] For example, the first driving member 21 in this embodiment may be a servo motor, a cylinder, etc., which is not limited in this embodiment.

[0066] In this embodiment, multiple groups of fine-tuning components 3 are provided, and the multiple groups of fine-tuning components 3 are provided in one-to-one correspondence with the multiple connecting members 11, that is, each connecting member 11 is connected to a corresponding fine-tuning component 3. The fine-tuning component 3 is drivingly connected to the support member 12 connected to the corresponding connecting member 11, and is used to drive the support member 12 to move relative to the connecting member 11 in the first direction X, so as to indirectly drive the refrigeration plate 20 to move in the first direction X, so that two adjacent support members 12 can be further approached or separated, and the fine adjustment of the refrigeration plate 20 can be achieved.

[0067] In this embodiment, the driving step length of the first driving member 21 is greater than the driving step length of the fine-tuning component 3, so that the first driving member 21 can realize a large-amplitude movement of the support member 12, and the fine-tuning component 3 can realize a small-amplitude movement of the support member 12. By combining the large-amplitude movement of the support member 12 with the small-amplitude movement, it is possible to improve the efficiency of adjusting the position of the support member 12 while avoiding the situation in which the support member 12 and the refrigeration plate 20 thereon move too fast or excessively and damage the product to be frozen and thawed, thereby achieving higher reliability.

[0068] When using the spacing adjustment mechanism provided in this embodiment, after placing the product to be frozen and thawed on the refrigeration plate 20, the first driving member 21 can be controlled to start first, and the first driving member 21 drives the transmission member 22 to move, and the transmission member 22 transmits power to the driving connection member 112, and the driving connection member 112 drives the linkage member 4 to move, so that the linkage member 4 drives multiple movable connections 113 to move close to the fixed connection member 111 in the first direction X. When the distance between two adjacent support members 12 reaches a small value, but the product to be frozen and thawed does not contact the upper refrigeration plate 20, the first driving member 21 is controlled to be closed. At this time, the multiple groups of fine-tuning components 3 are controlled to start, and the fine-tuning components 3 drive the support members 12 connected thereto to move in the first direction X, so that the refrigeration plate 20 connected to the support members 12 can move toward the refrigeration plate 20 closer to the fixed connection member 111, until the upper and lower surfaces of the product to be frozen and thawed are in contact with the refrigeration plate 20.

[0069] The spacing adjustment mechanism provided in this embodiment comprises a plurality of connecting members 11 of the connecting assembly 1 including a fixed connecting member 111, a driving connecting member 112 and a plurality of movable connecting members 113. The first driving member 21 of the displacement adjustment assembly 2 drives the driving connecting member 112 of the plurality of connecting members 11 to move in the first direction X. While the driving connecting member 112 moves in a direction close to the fixed connecting member 111, it drives the linkage member 4 to move, so that the linkage member 4 drives the plurality of movable connecting members 113 to move in a direction close to the fixed connecting member 111, so that the distance between two adjacent refrigeration plates 20 can be smaller. The fine-tuning assembly 3 is used to drive the supporting member 12 to move in the first direction X relative to the connecting member 11 movably connected to the supporting member 12, so that the distance between two adjacent refrigeration plates 20 in the first direction X can be fine-tuned, thereby enabling the upper and lower surfaces of the product to be frozen and thawed to contact the refrigeration plate 20 without damaging the product to be frozen and thawed, thereby increasing the cooling area of ​​the product to be frozen and thawed, thereby improving the cooling speed and cooling efficiency of the freeze-thaw device using the spacing adjustment mechanism, and having a higher freeze-thaw efficiency.

[0070] In this embodiment, the transmission member 22 can be a transmission screw extending along the first direction X. The driving connecting member 112 is provided with a second screw hole (not shown in the figure), and the transmission screw is threadedly connected to the second screw hole. When the first driving member 21 drives the transmission screw to rotate, the transmission screw can drive the above-mentioned driving connecting member 112 to move in the first direction X.

[0071] Optionally, the fixed connection member 111 can be supported on the transmission member 22 or rotatably connected to the transmission member 22, and a bearing (not shown in the figure) is provided between the connection positions of the two, so that when the transmission member 22 rotates, the fixed connection member 111 will not be driven to move, so that the position of the fixed connection member 111 in the first direction X remains unchanged. Of course, it can be understood that the fixed connection member 111 can also be connected to the housing 10 through other components, and this embodiment is not limited to this.

[0072] Exemplarily, each movable connecting member 113 is provided with a through hole (not shown in the figure), and the transmission member 22 passes through the through holes of the plurality of movable connecting members 113 in sequence, so as to guide the movement of the movable connecting member 113, so as to ensure that each movable connecting member 113 moves along the first direction X. It should be noted that the transmission member 22 is not in transmission connection with the movable connecting member 113, that is, when the transmission member 22 rotates, it will not drive the movable connecting member 113 to rotate. For example, a bearing may be provided in the through hole, and the transmission member 22 is arranged through the bearing.

[0073] In some optional embodiments, such as Figures 2 to 4As shown, the fine-tuning assembly 3 includes a second driving member 31 and a fine-tuning screw 32. Among them, the support member 12 is provided with a first screw hole 121, and the fine-tuning screw 32 extends along the first direction X and is screwed with the first screw hole 121. The second driving member 31 is drivingly connected to the fine-tuning screw 32, and drives the fine-tuning screw 32 to rotate, so that the support member 12 moves in the first direction X, thereby further reducing the distance between two adjacent support members 12 in the first direction X, and further reducing the spacing between the refrigeration plates 20. In this embodiment, the driving step length of the first driving member 21 is greater than the driving step length of the second driving member 31. Exemplarily, a plurality of second driving members 31 correspond one-to-one to a plurality of connecting members 11, and each second driving member 31 is arranged on the connecting member 11 corresponding thereto.

[0074] It should be noted that if Figure 4 As shown, the connecting member 11 is connected to a mounting plate 115 arranged opposite to the corresponding supporting member 12, and one end of the fine-tuning screw 32 is penetrated through the mounting plate 115, so that the fine-tuning screw 32 can be limited by the mounting plate 115 to prevent the fine-tuning screw 32 from tilting relative to the first direction X. It should be noted that the fine-tuning screw 32 and the mounting plate 115 are not transmission-connected, so that when the fine-tuning screw 32 rotates, the mounting plate 115 will not move.

[0075] Further optionally, if Figure 4 As shown, the fine-tuning assembly 3 further includes a first transmission belt 33 and a second transmission belt 34. A fine-tuning screw 32 is provided at each end of each support member 12, that is, two fine-tuning screws 32 are provided at intervals, and two first screw holes 121 are provided in a one-to-one correspondence with the fine-tuning screws 32, and each fine-tuning screw 32 is screwed to the hole wall of the corresponding first screw hole 121. The first transmission belt 33 is transmission-connected to the output end of the second driving member 31 and a fine-tuning screw 32, and the second transmission belt 34 is transmission-connected between the two fine-tuning screws 32, so that the two fine-tuning screws 32 rotate synchronously.

[0076] By setting the first transmission belt 33 and the second transmission belt 34, on the one hand, the transmission connection between the second driving member 31 and the fine-tuning screw 32 is realized, and the setting position of the second driving member 31 can be more flexible; on the other hand, two fine-tuning screws 32 can be set so that the support member 12 has two force points to improve the uniformity of the force of the support member 12, thereby improving the smoothness of the movement of the support member 12 and reducing the jamming caused by the tilt of the support member 12.

[0077] In this embodiment, the connection position between the first transmission belt 33 and one fine-tuning screw 32 and the connection position between the second transmission belt 34 and the one fine-tuning screw 32 are spaced apart in the axial direction of the fine-tuning screw 32 so as not to interfere with each other.

[0078] It should be noted that the fine-tuning screw 32, the first transmission belt 33 and the second transmission belt 34 may be provided with transmission teeth (not shown in the figure), and the transmission teeth on the fine-tuning screw 32 mesh with the transmission teeth on the first transmission belt 33 and the second transmission belt 34 to achieve transmission.

[0079] Alternatively, if Figure 3 As shown, the connecting member 11 is provided with a first slide groove 114 extending along the first direction X, and the supporting member 12 is provided with a sliding portion 122 matched with the first slide groove 114. The sliding portion 122 is slidably arranged in the first slide groove 114, and can slide along the extension direction of the first slide groove 114, so as to guide the movement of the supporting member 12 relative to the connecting member 11. On the one hand, the sliding connection between the supporting member 12 and the connecting member 11 is realized, and on the other hand, it is ensured that the supporting member 12 can move in the first direction X without deviation.

[0080] In some optional embodiments, please continue to see Figure 1 and Figure 2 The spacing adjustment mechanism also includes a limit assembly 5. The linkage member 4 is a retractable scissor frame structure (also called a scissor frame), and the limit assembly 5 is used to limit the extension range of the linkage member 4 to limit the minimum distance between two adjacent connecting members 11, so that when the distance between two adjacent connecting members 11 reaches the minimum distance, the size of the scissor frame structure in the first direction X reaches the minimum and cannot move further, thereby avoiding damage to the product to be frozen and thawed.

[0081] In some optional embodiments, such as Figure 2 As shown, the linkage member 4 includes a plurality of connecting rods 41, which are rotatably connected end to end and cross-hinged in the middle to form a plurality of retractable movable quadrilateral groups (not shown in the figure). The movable quadrilateral group is retractable in the first direction X. In this embodiment, the plurality of connecting rods 41 form four movable quadrilateral groups. Exemplarily, the middle of the connecting rods 41 is cross-hinged through a first rotating shaft 42.

[0082] In this embodiment, the two ends of the movable quadrilateral group in the first direction X are respectively hinged to the two adjacent connecting members 11, so that the movable quadrilateral group can drive the connecting member 11 to move in the first direction X when it is extended or retracted. The limiting assembly 5 includes a plurality of limiting groups (not shown in the figure) arranged at intervals along the first direction X and connected to the linkage member 4, and the plurality of limiting groups are movably connected to the plurality of movable quadrilateral groups in a one-to-one correspondence. In addition, the limiting group is used to limit the extension and retraction range of the corresponding movable quadrilateral group to limit the minimum distance between the two adjacent connecting members 11, so that when the distance between the two adjacent connecting members 11 reaches the minimum distance, the size of the movable quadrilateral group in the first direction X reaches the minimum and cannot be moved further, thereby avoiding damage to the product to be frozen and thawed.

[0083] In some optional embodiments, each limiting group includes a limiting plate 51 and two sliding members 52. The limiting plate 51 is provided with two second sliding grooves 511 corresponding to the two sliding members 52. Figure 1 As shown, the second slide groove 511 extends along the second direction Y, and the second direction Y is perpendicular to the first direction X. The sliding member 52 can slide in the second slide groove 511 along the extension direction of the second slide groove 511, and the two sliding members 52 are arranged one by one at the two ends of the linkage member 4 in the second direction Y, so as to limit the expansion range and contraction range of the scissor frame structure. Exemplarily, the two sliding members 52 are arranged one by one at the two ends of the movable quadrilateral group in the second direction Y.

[0084] By setting the sliding member 52 and the second sliding groove 511, the sliding member 52 can slide in the second sliding groove 511 during the extension and retraction process of the movable quadrilateral group. When the movable quadrilateral group moves to the point where the distance between two adjacent connecting members 11 is the minimum distance, the sliding member 52 abuts against a groove wall of the second sliding groove 511 in the second direction Y (specifically, a groove wall of one second sliding groove 511 facing away from the other second sliding groove 511) to limit the continued compression of the movable quadrilateral group, thereby limiting the extension and retraction range of the movable quadrilateral group to limit the minimum distance between two adjacent connecting members 11.

[0085] In some optional embodiments, one of the groove wall of the second slide groove 511 and the sliding member 52 may be provided with a groove (not shown in the figure), and the other may be provided with a protrusion (not shown in the figure) that can be placed in the groove. The protrusion can slide in the groove and is used to limit the sliding member 52 from exiting the second slide groove 511, so as to further improve the reliability of the spacing adjustment mechanism.

[0086] Of course, it can be understood that the limiting assembly 5 can also be used to limit the maximum distance between two adjacent connecting members 11. Specifically, when the movable quadrilateral group moves to the point where the distance between two adjacent connecting members 11 is the maximum distance, the sliding member 52 abuts against another groove wall of the second sliding groove 511 in the second direction Y (specifically, the groove wall of one second sliding groove 511 facing another second sliding groove 511) to limit the continued stretching of the movable quadrilateral group.

[0087] Exemplarily, the sliding member 52 is rotatably connected to the connecting rod 41, so that when the connecting rod 41 rotates, the sliding member 52 will not be driven to rotate. Figure 3 As shown, the sliding member 52 can be connected to the second rotating shaft 43, and the ends of the two connecting rods 41 are pivotally connected through the second rotating shaft 43.

[0088] In this embodiment, Figure 2As shown, the second driving member 31 , the movable quadrilateral group and the limiting assembly 5 are all located on the side of the connecting member 11 facing away from the supporting member 12 , so as not to interfere with the movement of the supporting member 12 or the installation of the refrigeration plate 20 .

[0089] The spacing adjustment mechanism provided in this embodiment has a simple structure and has a wide application range and reliability.

[0090] In a second aspect, this embodiment further provides a freeze-thaw device, comprising the spacing adjustment mechanism described in the first aspect, and having a higher refrigeration efficiency.

[0091] like Figure 5 As shown, the freeze-thaw device also includes a shell 10 and a refrigeration plate 20 disposed in the shell 10. The connecting assembly 1, the linkage member 4 and the fine-tuning assembly 3 are all disposed in the shell 10, and the first driving member 21 is disposed outside the shell 10. The refrigeration plate 20 is connected to the support member 12, so that when the support member 12 moves, the refrigeration plate 20 can be driven to move.

[0092] The freeze-thaw device in this embodiment also includes a controller (not shown in the figure), which is connected to the first drive member 21 and the fine-tuning component 3 and is used to control the opening and closing of the first drive member 21 and the fine-tuning component 3 to achieve automatic adjustment of the spacing adjustment mechanism, with high reliability and automation.

[0093] Alternatively, if Fig. 9 and Fig.10 As shown, the freeze-thaw device also includes a horizontal reciprocating mechanism 30. The horizontal reciprocating mechanism 30 is connected to the housing 10 and is used to drive the housing 10 to reciprocate or swing in the horizontal direction. Since the horizontal reciprocating motion or swinging of the housing 10 can accelerate the freeze-thaw more quickly, the provision of the horizontal reciprocating mechanism 30 can further improve the freeze-thaw efficiency.

[0094] For example, the horizontal reciprocating mechanism 30 can drive the housing 10 in one horizontal direction or multiple horizontal directions, so that the housing 10 can achieve reciprocating motion or swing in one or more directions. Alternatively, there can be multiple horizontal reciprocating mechanisms 30, some of which are used to drive the housing 10 to move in one horizontal direction, and some of which are used to drive the housing 10 to move in another horizontal direction, which is not limited in this embodiment.

[0095] In some optional embodiments, the horizontal reciprocating mechanism 30 may be a crank slider mechanism, and includes a third driving member 301, a connecting rod 302, and a slider 303. The third driving member 301 may be a crank motor, which drives the slider 303 to perform low-speed reciprocating motion through the connecting rod 302. The slider 303 is connected to the housing 10, so that the slider 303 can drive the housing 10 to perform low-speed reciprocating motion when it moves.

[0096] In this embodiment, the controller is connected to the horizontal reciprocating mechanism 30 and is used to control the opening and closing of the horizontal reciprocating mechanism 30. Specifically, the controller is connected to the third driving member 301.

[0097] In some optional embodiments, such as Figure 1 and Fig. 9 The housing 10 is shown to be disposed on a base 60 , and the base 60 is provided with a fourth slide groove 601 , in which the slider 303 is slidably disposed, so as to guide the movement of the slider 303 and the housing 10 through the fourth slide groove 601 .

[0098] Alternatively, if Figure 6 and Figure 8 As shown, the freeze-thaw device also includes a pressure detection member 40. The refrigeration plate 20 is provided with a pressure detection member 40 on both sides in the first direction X. The pressure detection member 40 is used to detect the pressure applied to it by the object in contact with it, thereby indirectly reflecting the pressure applied by the refrigeration plate 20 to the product to be frozen and thawed. In this embodiment, the pressure detection member 40 is arranged on the refrigeration plate 20 and is located between the product to be frozen and thawed and the refrigeration plate 20. When the upper and lower surfaces of the product to be frozen and thawed are in contact with the refrigeration plate 20, the product to be frozen and thawed and the refrigeration plate 20 will apply pressure to the pressure detection member 40. The smaller the distance between the refrigeration plates 20, the greater the extrusion force on the pressure detection member 40. Therefore, it can be determined by the data detected by the pressure detection member 40 whether the product to be frozen and thawed is in contact with both refrigeration plates 20 on both sides thereof, and it can also be reflected according to the detection data whether the pressure applied by the refrigeration plate 20 to the product to be frozen and thawed is too large to improve safety.

[0099] In some optional embodiments, such as Figure 8 As shown, there may be a plurality of pressure detection components 40, and the plurality of pressure detection components 40 are evenly distributed on the refrigeration plate 20. The pressure detection component 40 includes but is not limited to a pressure sensor.

[0100] In this embodiment, the pressure detection member 40 is connected to the controller, and the controller is used to control the opening and closing of the fine-tuning assembly 3 according to the detection result of the pressure detection member 40, so as to avoid the situation where the refrigeration plate 20 is excessively moved due to the driving of the fine-tuning assembly 3 and damages the product to be frozen and thawed, thereby improving the reliability of the freeze-thaw device. Optionally, the detection result of the pressure detection member 40 can be pressure data.

[0101] Alternatively, if Figure 6As shown, the freeze-thaw device further includes a side support assembly 50. At least one side of the refrigeration plate 20 is connected to the side support assembly 50, for example, at least one side in the length direction and / or width direction of the refrigeration plate 20 is connected to the side support assembly 50, and the side support assembly 50 is used to assist in supporting the refrigeration plate 20, so that the side support assembly 50 and the support member 12 cooperate with each other to support the refrigeration plate 20, thereby improving the supporting effect and reducing the force on the support member 12.

[0102] Specifically, Figure 6 and Figure 7 As shown, the side support assembly 50 includes a first side support plate 501 and a second side support plate 502 that are vertically connected. The first side support plate 501 is connected to the side end surface of the refrigeration plate 20, and the second side support plate 502 is provided with a through hole 5021, which extends along the third direction Z. Any two of the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0103] A resist 503 is provided in the through hole 5021 in this embodiment, and a third slide groove 101 extending along the first direction X is provided at a position on the inner wall of the shell 10 corresponding to the side support assembly 50, that is, the number of the third slide grooves 101 is the same as the number of the side support assemblies 50 and corresponds one to one, and the second side support plate 502 of the side support assembly 50 is slidably disposed in the corresponding third slide groove 101, so that the third slide groove 101 can guide the movement of the second side support plate 502.

[0104] Furthermore, the abutting member 503 has an abutting state and a separated state. In the abutting state, the abutting member 503 abuts against the groove wall of the third chute 101, so that the side support assembly 50 can be supported by the friction between the abutting member 503 and the groove wall of the third chute 101, thereby achieving support for the refrigeration plate 20, so that the refrigeration plate 20 is supported not only by the support member 12, but also by the abutting member 503, so as to further improve the load-bearing capacity of the refrigeration plate 20. In the separated state, the abutting member 503 is separated from the groove wall of the third chute 101, so that the abutting member 503 does not affect the sliding of the second side support plate 502 in the third chute 101, thereby enabling the refrigeration plate 20 to move flexibly.

[0105] In some optional embodiments, in the abutting state, the abutting member 503 elastically abuts against the groove wall of the third sliding groove 101 to have higher adaptability and better supporting ability.

[0106] Optionally, the push-up member 503 may include an electromagnetic driver (not shown in the figure) and two push-up columns connected to the electromagnetic driver, and the electromagnetic driver can drive the two push-up columns to extend out of the through hole 5021 or retract into the through hole 5021 to switch between the push-up state and the separation state. The electromagnetic driver can be connected to the controller, and when the position of the refrigeration plate 20 needs to be adjusted, the controller controls the electromagnetic driver to act so that the electromagnetic driver controls the two push-up columns to retract into the through hole 5021. When the position of the refrigeration plate 20 reaches the requirement, the electromagnetic driver is controlled to act so that the electromagnetic driver controls the two push-up columns to extend out of the through hole 5021 and abut against the groove wall of the third slide groove 101, and the support of the refrigeration plate 20 is achieved through the friction between the two. Of course, it can be understood that the push-up member 503 can also be other structures, which is not limited in this embodiment. In some optional embodiments, the end surface of the push-up column used to abut against the groove wall of the third slide groove 101 is provided with burrs or rough structures to increase friction.

[0107] In some optional embodiments, refrigerant delivery hoses (not shown in the figure) are provided on both sides of the rear end of the refrigeration plate 20 (for example, the end of the refrigeration plate 20 facing the support member 12 or the end away from the support member 12). In this embodiment, in order to avoid problems with the delivery hose and the interface when the refrigeration plate 20 moves, such as Fig.11 As shown, the freeze-thaw device also includes a delivery hose and a plurality of hose regulators 70. The delivery hose is connected to the refrigeration plate 20 and can deliver the medium into the refrigeration plate 20; in this embodiment, each refrigeration plate 20 is connected to two delivery hoses to achieve the input and output of the medium. The plurality of hose regulators 70 are all arranged on the inner wall of the housing 10, and the delivery hose is passed through the hose regulator 70. In some optional embodiments, the hose regulator 70 is provided with a clamping hole or a clamping groove, and the delivery hose is passed through the clamping hole or the clamping groove to achieve the limit of the delivery hose.

[0108] The hose regulator 70 in this embodiment has a clamping state and an opening state. In the clamping state, the hose regulator 70 can clamp the delivery hose so that the delivery hose cannot move relative to the hose regulator 70, thereby fixing the delivery hose. In the opening state, the delivery hose can move axially relative to the hose regulator 70 to match the movement of the refrigeration plate 20.

[0109] In this embodiment, multi-node hose regulators 70 are distributedly arranged at positions such as the inner side wall of the housing 10. Fig.12As shown, the hose regulator 70 includes a clamp 701, which can be opened or fixed according to the movement position of the delivery hose, thereby clamping or loosening the delivery hose. The clamp 701 can be connected to the controller. When the refrigeration plate 20 moves, the controller can control the clamp 701 to loosen the hose, so that the delivery hose can slide axially relative to the clamp 701. After the refrigeration plate 20 is located at the required position, the controller can control the clamp 701 to clamp the delivery hose, so that the delivery hose will not restrict the movement of the refrigeration plate 20 while limiting the delivery hose.

[0110] Exemplarily, the clamp 701 may include a fourth driving member (not shown in the figure), a first clamping portion (not shown in the figure) and a second clamping portion (not shown in the figure), and the fourth driving member may drive the first clamping portion to move closer to or away from the second clamping portion to achieve clamping or loosening of the delivery hose. The first clamping portion and the second clamping portion may be provided with contoured grooves respectively, which are used to adapt to the cross-sectional shape of the delivery hose to ensure the clamping effect. The fourth driving member is exemplified as a cylinder.

[0111] Of course, it is understandable that the compressor can also be an elastic compressor for the conveying hose to ensure that the conveying hose can move relative to the compressor when needed, and can also ensure that the conveying hose can be laid along a preset path without getting entangled with each other, thus having higher reliability.

[0112] The freeze-thaw device provided in this embodiment combines large displacement movement with micro-displacement adjustment in two-stage transmission, and uses distributed pressure detection parts 40 on the refrigeration plate 20 to measure pressure to ensure the best contact and safety between the refrigeration plate 20 and the product to be frozen and thawed, and at the same time, distributes the load of the refrigeration plate 20 through distributed friction support (i.e., side support assembly 50). The freeze-thaw efficiency is improved by using direct cooling instead of refrigeration oil. In addition, by setting a horizontal reciprocating mechanism 30, the housing 10 can be moved in multiple horizontal directions, thereby further increasing the freeze-thaw effect. In addition, the setting of the hose regulator 70 can flexibly plan the pipe layout of the conveying hose, and adjust the length, redundancy, etc. of the conveying hose tensioning through the clamp 701 of the hose regulator 70 during the movement to reduce the winding torque.

[0113] In a third aspect, this embodiment further provides a control method for a freeze-thaw device, which is applied to the freeze-thaw device provided in the second aspect, wherein the control method for the freeze-thaw device comprises the following steps:

[0114] S100, the controller controls the first driving member 21 to start, so that the first driving member 21 drives the driving connecting member 112 of the connecting assembly 1 to move toward the direction close to the fixed connecting member 111, and drives at least one movable connecting member 113 to move toward the direction close to the fixed connecting member 111 through the linkage member 4;

[0115] S200, when the distance between two adjacent connecting members 11 reaches the minimum distance, the first driving member 21 is controlled to be closed;

[0116] S300, the controller controls the fine-tuning component 3 to move, and the fine-tuning component 3 drives the support member 12 connected thereto to move, so that two adjacent refrigeration plates 20 move in the first direction X, so that both sides of the product to be frozen and thawed in the first direction X are in contact with the refrigeration plates 20.

[0117] In step S100 , the driving connector 112 and the movable connector 113 both move toward the fixed connector 111 , so that the distance between two adjacent connectors 111 in the first direction X gradually decreases until the minimum distance is reached.

[0118] In step S200, when the sliding member 52 of the limit assembly 5 slides to abut against the groove wall of the corresponding second slide groove 511 away from the other second slide groove 511, the distance between the two connecting members 11 connected by the movable quadrilateral group connected by the sliding member 52 is the minimum distance. When the distance between any two adjacent connecting members 11 reaches the minimum distance, the first driving member 21 can be controlled to close, and the large displacement adjustment is ended.

[0119] In step S300 , micro-displacement adjustment is performed. The controller controls the second driving member 31 to start, and the second driving member 31 drives the fine-tuning screw 32 to rotate, so that the fine-tuning screw 32 drives the supporting member 12 connected thereto to move in the first direction X relative to the corresponding connecting member 11 .

[0120] Optionally, when the freeze-thaw device includes a pressure detection member 40, step S300 includes the following steps:

[0121] S301, the controller controls the second driving member 31 of the fine-tuning assembly 3 to start, and obtains in real time through the pressure detecting member 40 the pressure data applied by the object in contact with the pressure detecting member 40 to the pressure detecting member 40;

[0122] S302 , determining whether the pressure data reaches a preset pressure value, if so, controlling the second driving member 31 to be closed, if not, maintaining the second driving member 31 in a started state.

[0123] In step S301, the controller controls the second driving member 31 of each fine-tuning assembly 3 to start, and obtains in real time the pressure data applied to the pressure detecting member 40 by the object contacted by the pressure detecting member 40 on both sides of each refrigeration plate 20. It should be noted that the object contacted by the pressure detecting member 40 may be a refrigeration plate and a product to be frozen and thawed, which is not limited in this embodiment.

[0124] In step S302, when the pressure data detected by any pressure detection component 40 reaches a preset pressure value, the support component 12 connected to the refrigeration plate 20 where the pressure detection component 40 is located is controlled to stop moving to avoid damaging the product to be frozen and thawed.

[0125] The control method of the freeze-thaw device provided in this embodiment can avoid the situation where the product to be frozen and thawed is crushed, and has high reliability and safety.

[0126] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A freeze-thaw device, characterized in that: including a spacing adjustment mechanism; The spacing adjustment mechanism comprises: A connection assembly (1) comprising a plurality of connection members (11) and a plurality of support members (12) that are movably connected in a one-to-one correspondence, wherein the plurality of connection members (11) are arranged at intervals in a first direction (X), and the support members (12) are used to support a refrigeration plate (20); A displacement adjustment component (2), comprising a first driving member (21) and a linkage member (4); the plurality of connecting members (11) comprising a fixed connecting member (111), a driving connecting member (112) and at least one movable connecting member (113); the movable connecting member (113) being arranged between the fixed connecting member (111) and the driving connecting member (112) in the first direction (X); the first driving member (21) being transmission-connected to the driving connecting member (112); the linkage member (4) being movably connected to the fixed connecting member (111), the movable connecting member (113) and the driving connecting member (112); the first driving member (21) being capable of driving the driving connecting member (112) to move in the first direction (X); and the driving connecting member (112) driving at least one movable connecting member (113) to move in the first direction (X) through the linkage member (4); A fine-adjustment component (3), each of the connecting members (11) being provided with a fine-adjustment component (3), the fine-adjustment component (3) being used to drive the supporting member (12) to move relative to the connecting member (11) in the first direction (X); The freeze-thaw device further comprises a shell (10) and a refrigeration plate (20) arranged in the shell (10); the connection assembly (1), the linkage member (4) and the fine-tuning assembly (3) are all arranged in the shell (10), and the refrigeration plate (20) is connected to the support member (12); The freeze-thaw device further comprises a controller, which is control-connected to the first driving member (21) and the fine-tuning component (3) and is used to control the opening and closing of the first driving member (21) and the fine-tuning component (3); The freeze-thaw device further comprises a pressure detection component (40), and each of the refrigeration plates (20) is provided with the pressure detection component (40) on both sides in the first direction (X); The pressure detection component (40) is connected to the controller, and the controller is used to control the opening and closing of the fine adjustment component (3) according to the detection result of the pressure detection component (40).

2. The freeze-thaw device according to claim 1, characterized in that: The fine-tuning assembly (3) comprises a second driving member (31) and a fine-tuning screw (32); the second driving member (31) is arranged on the connecting member (11); the supporting member (12) is provided with a first screw hole (121); the fine-tuning screw (32) extends along the first direction (X) and is threadedly connected to the first screw hole (121); the second driving member (31) is drivingly connected to the fine-tuning screw (32) and drives the fine-tuning screw (32) to rotate, so that the supporting member (12) moves in the first direction (X).

3. The freeze-thaw device according to claim 2, characterized in that: The fine-tuning assembly (3) further comprises a first transmission belt (33) and a second transmission belt (34), and a fine-tuning screw rod (32) is respectively arranged at two ends of each of the supporting members (12); The first transmission belt (33) is transmission-connected to the output end of the second driving member (31) and one of the fine-tuning screws (32), and the second transmission belt (34) is transmission-connected between the two fine-tuning screws (32), so that the two fine-tuning screws (32) rotate synchronously.

4. The freeze-thaw device according to claim 2, characterized in that: The connecting member (11) is provided with a first sliding groove (114) extending along the first direction (X), and the supporting member (12) is provided with a sliding portion (122) matching with the first sliding groove (114), and the sliding portion (122) is slidably arranged in the first sliding groove (114).

5. The freeze-thaw device according to claim 1, characterized in that: The spacing adjustment mechanism further comprises a limiting component (5); the linkage member (4) is a retractable scissor frame structure; the limiting component (5) is used to limit the extension range of the linkage member (4) so ​​as to limit the minimum distance between two adjacent connecting members (11).

6. The freeze-thaw device according to claim 5, characterized in that: The limiting assembly (5) comprises a plurality of limiting groups which are arranged at intervals along the first direction (X) and are all connected to the linkage member (4), each of the limiting groups comprises a limiting plate (51) and two sliding members (52), the limiting plate (51) is provided with two second sliding grooves (511) corresponding to the two sliding members (52) in a one-to-one manner, the second sliding grooves (511) extend in a second direction (Y), the sliding member (52) can slide in the second sliding grooves (511) along the extension direction of the second sliding grooves (511), and the two sliding members (52) are arranged in a one-to-one manner at two ends of the linkage member (4) in the second direction (Y); the second direction (Y) is perpendicular to the first direction (X).

7. The freeze-thaw device according to claim 1, characterized in that: The freeze-thaw device further comprises a horizontal reciprocating mechanism (30), wherein the horizontal reciprocating mechanism (30) is connected to the shell (10) and is used to drive the shell (10) to reciprocate in a horizontal direction; The controller is connected to the horizontal reciprocating mechanism (30) and is used to control the opening and closing of the horizontal reciprocating mechanism (30).

8. The freeze-thaw device according to claim 1, characterized in that: The freeze-thaw device further comprises a side support assembly (50), and at least one side of the refrigeration plate (20) is connected to the side support assembly (50); The side support assembly (50) comprises a first side support plate (501) and a second side support plate (502) which are vertically connected, the first side support plate (501) being connected to the refrigeration plate (20), and the second side support plate (502) being provided with a through hole (5021); A push piece (503) is provided in the through hole (5021); the inner wall of the shell (10) is provided with a third slide groove (101) extending along the first direction (X) corresponding to the side support assembly (50); the second side support plate (502) is slidably arranged in the third slide groove (101), and the push piece (503) can abut against the groove wall of the third slide groove (101).

9. The freeze-thaw device according to claim 1, characterized in that: The freeze-thaw device also includes a delivery hose and a plurality of hose regulators (70); the delivery hose is connected to the refrigeration plate (20) and can deliver a medium into the refrigeration plate (20); the plurality of hose regulators (70) are all arranged on the inner wall of the shell (10), the delivery hose is passed through the hose regulator (70), and the hose regulator has a clamping state and an open state. In the clamping state, the hose regulator (70) can clamp the delivery hose, and in the open state, the delivery hose can move axially relative to the hose regulator (70).

10. A method for controlling a freeze-thaw device, applied to the freeze-thaw device according to any one of claims 1 to 9, characterized in that: The steps include: S100, the controller controls the first driving member (21) to start, so that the first driving member (21) drives the driving connecting member (112) of the connecting assembly (1) to move in a direction close to the fixed connecting member (111), and drives at least one movable connecting member (113) to move in a direction close to the fixed connecting member (111) through the linkage member (4); S200, when the distance between two adjacent connecting members (11) reaches the minimum distance, controlling the first driving member (21) to close; S300, the controller controls the fine adjustment component (3) to move, and the fine adjustment component (3) drives the support member (12) connected thereto to move, so that two adjacent refrigeration plates (20) are brought closer to each other in the first direction (X), so that both sides of the product to be frozen and thawed in the first direction (X) are in contact with the refrigeration plates (20); The freeze-thaw device includes a pressure detection component (40), and step S300 includes the following steps: S301, the controller controls the second driving member (31) of the fine-tuning component (3) to start, and obtains in real time, through the pressure detecting member (40), pressure data applied to the pressure detecting member (40) by an object in contact with the pressure detecting member (40); S302, determining whether the pressure data reaches a preset pressure value, if so, controlling the second driving member (31) to be turned off, if not, maintaining the second driving member (31) in a started state.

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