Tray for worm heat treatment

Abstract

The utility model relates to a tray for worm heat treatment, and relates to the technical field of trays, the tray comprises two mesh surfaces and a frame, the mesh surfaces are respectively an upper mesh surface and a lower mesh surface, and the upper mesh surface and the lower mesh surface are respectively arranged on the upper side and the lower side of the frame; the upper net surface and the lower net surface are provided with positioning holes for the worm to penetrate through, the positioning holes of the upper net surface and the lower net surface are in one-to-one correspondence, the fixing pieces are arranged on the outer side of the frame, and the upper end and the lower end of each fixing piece are fixed to the side edge of the upper net surface and the side edge of the lower net surface respectively; the fixing pieces are far away from the frame along with stretching deformation of the net face and close to the frame along with contraction deformation of the net face, so that the net face of the tray is kept in a flat state in the heat treatment process. The device has the advantages of being simple in structure and convenient to implement.

Description

Technical Field

[0001] The present application relates to the technical field of pallets, and in particular to a pallet for heat treatment of worms. Background Art

[0002] Pallets are a medium that transforms static cargo into dynamic cargo. They are a platform for loading cargo, and they are also a movable platform, or a movable surface. Currently, pallets are also used as a loading tool. The corresponding structures on the pallet can be used to carry and support items and maintain their shape.

[0003] like Figure 1 As shown, a type of worm 7 that needs to be fixed with a tray for heat treatment is provided. This type of worm 7 is provided as a cylindrical structure, and the spiral teeth are located in the middle position of the cylinder. The worm 7 includes a lower ring protrusion 71 provided at its bottom end and an upper ring protrusion 72 provided at the top end. The lower ring protrusion 71 includes three ring protrusions arranged at intervals on the cylinder, and the intervals between the three ring protrusions form grooves. The upper ring protrusion 72 includes spiral teeth in the middle position and a ring protrusion at the top.

[0004] Currently, the tray used for heat treatment of this type of worm includes a supporting frame and a mesh surface. The mesh surface is provided in two pieces, one upper mesh surface and the other lower mesh surface, which are welded to the upper and lower sides of the frame. The mesh surface is woven from intersecting mesh wires, and the spaces formed between the wires are provided as positioning holes, with the positioning holes of the upper and lower mesh surfaces corresponding to each other. Before heat treatment, the worm needs to be vertically inserted into the positioning holes, that is, the lower annular protrusion 71 of the worm is engaged with the positioning hole of the lower mesh surface, and the upper annular protrusion 72 of the worm is placed on the mesh wire of the positioning hole of the upper mesh surface. This ensures that the worm remains vertical during heat treatment and prevents the worm from bending during the heat treatment process. During the heat treatment process of the worm, the mesh wire will expand due to heat and become elongated. Since the mesh surface is welded and fixed to the frame on all sides, the middle mesh surface will be arched away from the frame, causing the positioning holes in the mesh surface to deform, resulting in the worm inserted into the positioning holes to tilt. When the worm is cooled, the elongated mesh wire will cool and shrink, causing the arched mesh surface to sink towards the frame, causing the positioning holes in the mesh surface to deform again, resulting in the worm inserted into the positioning holes to tilt.

[0005] After repeated use of hot and cold cycles on this type of tray used for heat treatment of worms, the deformation of the tray's mesh surface becomes difficult to recover, causing the mesh surface to become uneven, affecting the vertical positioning of the worm, causing the worm to tilt and resulting in errors in the produced worm. Summary of the Invention

[0006] In order to keep the mesh surface of the tray flat during the heat treatment process, the present application provides a tray for worm heat treatment.

[0007] The present application provides a tray for heat treatment of worms, which adopts the following technical solution:

[0008] A tray for heat treatment of worms, comprising a mesh surface and a frame, wherein the mesh surface is provided with two pieces and are respectively provided as an upper mesh surface and a lower mesh surface, and the upper mesh surface and the lower mesh surface are respectively provided on the upper and lower sides of the frame; the upper mesh surface and the lower mesh surface are provided with positioning holes for the worm to pass through, and the positioning holes of the upper mesh surface and the lower mesh surface correspond to each other one by one, and further comprising a fixing sheet, wherein a plurality of fixing sheets are provided, and the fixing sheets are provided on the outside of the frame, and the upper and lower ends of the fixing sheets are respectively fixed to the side edges of the upper mesh surface and the lower mesh surface; the fixing sheet moves away from the frame as the mesh surface is stretched and deformed, and approaches the frame as the mesh surface is contracted and deformed.

[0009] By adopting the above technical solution, during the heat treatment of the worm, since the side wall of the mesh surface is fixed to the fixed plate, when the mesh wire expands due to heat and is elongated, the fixed plate will move away from the frame, so that the mesh surface remains flat; when the mesh wire cools and contracts, the fixed plate that is away from the frame after being heated will move towards the frame under the contraction pull of the mesh wire, so that the mesh surface continues to remain flat; providing a movable fixing plate helps to keep the mesh surface flat during heat treatment, keep the worm in a vertical direction, and reduce the bending of the worm during heat treatment.

[0010] Preferably, the mesh surface is formed by weaving a plurality of groups of mesh wires in an intersecting vertical and horizontal manner, and the mesh surface is woven in a manner that a plurality of mesh wires are woven into a group, and a plurality of groups of mesh wires are evenly spliced along the longitudinal and transverse directions to form a mesh surface structure; the space enclosed between a single group of mesh wires is set as a second positioning hole, and a group of mesh wires is spaced apart between the second positioning holes; the worm is vertically inserted into the second positioning holes in sequence, the lower ring convex of the worm is clamped in the second positioning hole of the lower mesh surface, and the upper ring convex of the worm is placed on the mesh wire of the second positioning hole on the upper mesh surface.

[0011] By adopting the above technical solution, the mesh surface can be woven in a group of multiple wires to make the mesh surface more stable, and the vertical displacement of the worm inserted into the positioning hole can be reduced; a group of the mesh wires is spaced between the positioning holes, which increases the distance between the positioning holes. When the worm is vertically inserted into the positioning hole, it can avoid contact between the worms, so that each positioning hole can be used, thereby improving the utilization rate of the positioning holes.

[0012] Preferably, the mesh surface is formed by weaving a plurality of mesh cables at intervals in the vertical and horizontal directions. The mesh surface is woven in such a manner that one mesh cable is woven as a group, and a plurality of mesh cables are evenly spliced along the longitudinal and transverse directions to form a mesh surface structure; the space enclosed between one mesh cable and another mesh cable is set as a first positioning hole, and the first positioning holes are separated by one mesh cable; the worm is vertically inserted into the first positioning holes at intervals in sequence, the lower ring convex of the worm is clamped in the first positioning hole of the lower mesh surface, and the upper ring convex of the worm is mounted on the mesh cable of the first positioning hole on the upper mesh surface.

[0013] By adopting the above technical solution, the mesh is woven in a group of lines, making the mesh structure simpler and easier to weave.

[0014] Preferably, the frame includes a first plate body and a second plate body, and the first plate body and the second plate body are each set as two. The first plate body and the second plate body are connected to form a quadrilateral frame structure, and a support rod is fixed between the two first plate bodies, and the support rod is set parallel to the second plate body.

[0015] By adopting the above technical solution and welding the fixed support rods between the two first plates, the supporting effect of the frame on the upper and lower mesh surfaces can be strengthened, and the shape of the frame can be fixed to make the frame more stable.

[0016] Preferably, support columns are provided at the corners of the frame, and the multiple frames are plugged into each other through the support columns.

[0017] By adopting the above technical solution, multiple frames can be stacked up and down through supporting columns, thereby improving space utilization.

[0018] Preferably, the support column is set to be hollow inside, and a first positioning protrusion is set on the top of the support column; the first positioning protrusion includes a first plug-in end and a first fixed end, the diameter of the first plug-in end is smaller than the inner diameter of the support column, and the first fixed end is fixed to the support column.

[0019] By adopting the above technical solution, the diameter of the first plug-in end is smaller than the inner diameter of the support column, so that the positioning protrusion can be easily plugged into the bottom of the support column of the upper frame; the first fixed end is fixedly connected to the top of the support column, which can improve the stacking stability between multiple frames.

[0020] Preferably, the support column is set to be hollow inside, and a second positioning protrusion is set on the top of the support column. The cross-section of the second positioning protrusion is a stepped structure. The second positioning protrusion includes a plurality of sheets, and the plurality of sheets are fixed to each other, and gaps are formed between the sheets. The second positioning protrusion is communicated with the interior of the support column.

[0021] By adopting the above technical solution, the second positioning protrusion and the support column form a hollow structure that is connected from top to bottom, so that the internal spaces of multiple support columns stacked up and down can be connected to each other; when the stacked trays are cooled during heat treatment, the cooling medium remaining in the support columns can flow from the upper support column to the lower support column, which is convenient for discharging the residual cooling medium.

[0022] Preferably, the second positioning protrusion includes a second plug-in end and a second fixed end, the sheet of the second plug-in end corresponds to the sheet of the second fixed end one by one; the side length of the sheet of the second plug-in end is smaller than the inner diameter of the support column, and the second fixed end is fixed to the support column.

[0023] By adopting the above technical solution, the side length of the sheet at the second plug-in end is smaller than the inner diameter of the support column, so that the second plug-in end of the second positioning protrusion can be conveniently plugged into the bottom of the support column of the upper frame; the second fixed end is fixedly connected to the top of the support column, which can improve the stacking stability between multiple frames.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. During the heat treatment of the worm, since the side walls of the mesh are fixed to the fixing plate, when the mesh cable expands due to heat and stretches, the fixing plate will move away from the frame, keeping the mesh surface flat. When the mesh cable contracts due to cooling, the fixing plate, which is away from the frame after being heated, moves towards the frame under the pull of the shrinking mesh cable, keeping the mesh surface flat. The provision of a movable fixing plate helps to keep the mesh surface flat during heat treatment, keeps the worm in a vertical direction, and reduces the risk of worm bending during heat treatment.

[0026] 2. The mesh is woven with multiple wires in a group to make the mesh more stable and reduce the vertical displacement of the worm inserted into the positioning hole. The positioning holes are separated by a group of mesh wires, which increases the distance between the positioning holes. When the worm is vertically inserted into the positioning hole, it can avoid the worms from touching each other, making each positioning hole usable and improving the utilization rate of the positioning holes.

[0027] 3. The second positioning protrusion and the support column form a hollow structure that is connected from top to bottom, so that the internal spaces of multiple support columns stacked up and down can be connected to each other; when the stacked trays are cooled during heat treatment, the cooling medium remaining in the support columns can flow from the upper support column to the lower support column, which is convenient for discharging the residual cooling medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of a type of worm that is fixed with a tray for heat treatment in this application;

[0029] Figure 2 This is a schematic diagram of the overall structure of Example 1 of the present application;

[0030] Figure 3 is a bottom view of Example 1 of the present application;

[0031] Figure 4 This is a schematic diagram of the overall structure of Example 2 of the present application;

[0032] Figure 5 This is a schematic diagram of the overall structure of Example 3 of the present application;

[0033] Figure 6 This is a schematic diagram showing the second positioning protrusion in Example 3 of the present application.

[0034] Figure numerals: 1. frame; 11. first plate; 12. second plate; 13. support rod; 2. mesh surface; 21. upper mesh surface; 22. lower mesh surface; 23. mesh cable; 24. first positioning hole; 25. second positioning hole; 3. fixing plate; 4. support column; 41. connecting rod; 42. reinforcing rod; 43. vertical connecting rod; 5. first positioning protrusion; 51. first plug-in end; 52. first fixed end; 6. second positioning protrusion; 61. second plug-in end; 62. second fixed end; 7. worm; 71. lower ring protrusion; 72. upper ring protrusion. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1 -Attached Figure 6 This application is described in further detail.

[0036] The embodiment of the present application discloses a tray for heat treatment of a worm.

[0037] Reference Figure 2 and Figure 3 A tray for heat treatment of worms includes a mesh surface 2, a fixing plate 3, and a frame 1. The mesh surface 2 is provided with two plates, namely an upper mesh surface 21 and a lower mesh surface 22, which are respectively provided on the upper and lower sides of the frame 1. The fixing plates 3 are provided with multiple plates, which are provided on the outside of the frame 1, and the upper and lower ends of the fixing plates 3 are fixed to the side edges of the upper mesh surface 21 and the lower mesh surface 22, respectively. At the same time, the upper mesh surface 21 and the lower mesh surface 22 are provided with multiple positioning holes in the vertical direction, and the positioning holes of the upper mesh surface 21 and the lower mesh surface 22 correspond to each other one by one. The positioning holes are used to pass through the worm 7 and limit the worm 7 to ensure that the worm 7 is always in a vertical state during the heat treatment process.

[0038] During the heat treatment of worm 7, since the side walls of mesh surface 2 are fixed to fixing plate 3, when worm 7 is heated, mesh wire 23 expands and stretches, causing fixing plate 3 to move away from frame 1, thereby maintaining mesh surface 2 in a flat state. When worm 7 is cooled, mesh wire 23 contracts and contracts. After being heated, fixing plate 3, which was away from frame 1, moves toward frame 1 due to the contraction of mesh wire 23, thereby maintaining mesh surface 2 in a flat state. The provision of a movable fixing plate helps to maintain mesh surface 2 in a flat state during the heat treatment process, keeps worm 7 in an upright state, and prevents worm 7 from bending during the heat treatment process.

[0039] The mesh surface 2 is formed by multiple groups of mesh wires 23 woven at intervals in the vertical and horizontal directions. In this embodiment, the mesh surface 2 can be woven in a one-line-one-group manner, that is, a single group of mesh wires 23 is composed of one mesh wire 23. When weaving the mesh surface 2, the single group of mesh wires 23 are evenly spliced along the longitudinal and transverse directions to form the mesh surface 2 structure; and the space enclosed by the mesh wires 23 is set as the first positioning hole 24.

[0040] When the worm 7 is vertically inserted into the first positioning hole 24, the lower annular protrusion 71 of the worm 7 is clamped in the positioning hole of the lower mesh surface 22, and the upper annular protrusion 72 of the worm 7 is placed on the mesh wire 23 of the positioning hole of the mesh surface 21, so that the worm 7 remains in a vertical state during the heat treatment process, preventing the worm 7 from bending during the heat treatment process.

[0041] To avoid interference or contact between the worms 7 in adjacent positioning holes, which would affect the heat treatment effect of the worms 7, when the mesh 2 is woven in a one-line-a-group pattern, the worms 7 should be inserted into the first positioning holes 24 of the mesh 2 in sequence, with the worms 7 in two adjacent rows staggered. Preferably, the mesh wire 23 is made of steel wire.

[0042] The frame 1 includes a first plate 11 and a second plate 12. There are two of each of the first plate 11 and the second plate 12, which are welded together to form a closed quadrilateral frame 1. Multiple fixing plates 3 are evenly arranged on the outside of the frame 1 along the length of the first plate 11 and the second plate 12.

[0043] Multiple fixing plates 3 are evenly laid on the outside of the frame 1, so that the mesh surface 2 welded and fixed with the fixing plates 3 can be evenly stressed, preventing the mesh surface 2 from being uneven due to uneven stress, causing the worm 7 inserted into the mesh surface 2 to tilt, and causing errors in the produced worm 7.

[0044] A support rod 13 is provided between the two first plates 11. The support rod 13 is arranged parallel to the second plate 12. The two ends of the support rod 13 are welded to the two first plates 11. Multiple support rods 13 are provided and are evenly fixed between the two first plates 11. The provision of support rods 13 can strengthen the support effect of the frame 1 on the upper mesh surface 21 and the lower mesh surface 22, and can also fix the shape of the frame 1, making the frame 1 more stable.

[0045] Support columns 4 are provided at each of the four corners of the frame 1, allowing multiple frames 1 to be stacked one above the other via the support columns 4, improving space utilization. In this embodiment, the support columns 4 are configured as hollow cylinders, with first positioning protrusions 5 provided at their tops. The diameter of the first positioning protrusions 5 is smaller than the diameter of the inner wall of the support columns 4. When stacking pallets, the first positioning protrusions 5 of the support columns 4 of the lower frame 1 can be conveniently inserted into the bottom of the support columns 4 of the upper frame 1, thereby enhancing the stability of the stacking of multiple frames 1.

[0046] The first positioning protrusion 5 provided in this embodiment includes a first plug-in end 51 at the top and a first fixed end 52 at the bottom; the first fixed end 52 is used to be fixedly connected to the top of the support column 4, and the first plug-in end 51 is used to be plugged into and matched with the support column 4 of the upper frame 1; wherein, the first plug-in end 51 is cylindrical, and the first fixed end 52 is an annular structure formed at the bottom of the first plug-in end 51; and the diameter of the first plug-in end 51 is smaller than the diameter of the inner wall of the support column 4, so that the first positioning protrusion 5 can be conveniently plugged into the bottom of the support column 4 of the upper frame 1; the first fixed end 52 is located in the support column 4 and is welded and fixed to the support column 4.

[0047] Connecting rods 41 are provided between adjacent support columns 4. The connecting rods 41 are parallel to the first plate 11 and the second plate 12 of the frame 1 respectively. A plurality of connecting rods 41 are provided. Both ends of the connecting rods 41 are respectively welded and fixed to the tops of adjacent support columns 4 to form a quadrilateral frame structure.

[0048] A reinforcing rod 42 is arranged between the connecting rod 41 above the first plate body 11 and the support column 4 connected thereto. The two ends of the reinforcing rod 42 are respectively welded and fixed to the middle position of the support column 4 and the position near the end of the connecting rod 41 to form a triangular structure, which can improve the stability between the support column 4 and the connecting rod 41 and enhance the supporting function of the support column 4.

[0049] A vertical connecting rod 43 is provided between the connecting rod 41 and the first plate body 11 and between the connecting rod 41 and the second plate body 12. One end of the vertical connecting rod 43 is welded and fixed to the connecting rod 41, and the other end of the vertical connecting rod 43 is welded and fixed to the first plate body 11 or the second plate body 12, which can make the structure of the frame 1 more stable; wherein, the vertical connecting rod 43 is fixed at the middle position between the connecting rod 41 and the first plate body 11 or the middle position between the connecting rod 41 and the second plate body 12, which provides better support for the connecting rod 41 and the first plate body 11 or the connecting rod 41 and the second plate body 12.

[0050] The implementation principle of the embodiment of the present application is: before heat treatment, all worms 7 need to be vertically inserted into the positioning holes; in this embodiment, the weaving of the mesh surface 2 adopts a one-line-a-group weaving method, and when the worm 7 is vertically inserted into the first positioning hole 24, the lower annular protrusion 71 of the worm 7 is engaged with the mesh wire 23 of the first positioning hole 24 of the lower mesh surface 22, and the upper annular protrusion 72 of the worm 7 is placed on the mesh wire 23 of the first positioning hole 24 of the upper mesh surface 21; in order to avoid interference or contact between the worms 7 on adjacent first positioning holes 24, which affects the heat treatment effect of the worm 7, the worms 7 are inserted into the first positioning holes 24 of the mesh surface 2 in sequence, and the two adjacent rows of worms 7 are staggered.

[0051] Then multiple frames 1 are stacked up and down through the support column 4. In this embodiment, the top of the support column 4 adopts a first positioning protrusion 5. When multiple frames 1 are stacked up and down, the first plug-in end 51 of the first positioning protrusion 5 of the support column 4 of the lower frame 1 is inserted into the bottom of the support column 4 of the upper frame 1.

[0052] Move the stacked multiple trays into the heat treatment processing room. During the heating process of the worm 7, since the side wall of the mesh surface 2 is fixed to the fixing plate 3, when the mesh wire 23 expands and stretches due to thermal expansion, the fixing plate 3 connected to the side wall of the mesh surface 2 will move away from the frame 1, so that the mesh surface 2 remains flat and the worm 7 remains vertical.

[0053] After the heating is completed, the tray and the worm 7 in the processing chamber are cooled down. Since the side wall of the mesh surface 2 is fixed to the fixing plate 3, when the mesh line 23 is cooled down and shrinks and deforms, the fixing plate 3 that is away from the frame 1 after being heated will move toward the frame 1 under the contraction pull of the mesh line 23, so that the mesh surface 2 continues to remain flat and the worm 7 continues to remain vertical.

[0054] After cooling is completed, the stacked trays are moved out of the processing room, the worm gears 7 in the trays are taken out one by one, the empty tray is removed, and then the worm gears 7 in the tray below are taken out, and this operation is repeated until the worm gears 7 in all trays are taken out.

[0055] Example 2:

[0056] The difference between Example 2 and Example 1 is that:

[0057] Reference Figure 4 The weaving structure of the mesh 2 is different. In this embodiment, the mesh 2 can be woven in a three-wire group weaving manner, that is, a single group of mesh wires 23 is composed of three mesh wires 23; when weaving the mesh 2, the single group of mesh wires 23 are evenly spliced along the longitudinal and transverse directions to form the mesh 2 structure; the space enclosed by the single group of mesh wires 23 and the single group of mesh wires 23 is set as a second positioning hole 25, and three mesh wires 23 are spaced between each second positioning hole 25; wherein, in the mesh 2, the three transverse mesh wires 23 and the three longitudinal mesh wires 23 at each intersecting weaving point are sequentially picked and pressed for weaving.

[0058] When the worm 7 is vertically inserted into the second positioning hole 25 , the lower annular protrusion 71 of the worm 7 is engaged with the mesh wire 23 of the second positioning hole 25 of the lower mesh surface 22 , and the upper annular protrusion 72 of the worm 7 is placed on the mesh wire 23 of the second positioning hole 25 of the upper mesh surface 21 .

[0059] When the mesh surface 2 is weaved in a three-wire-a-group weaving method, three mesh wires 23 are spaced between each second positioning hole 25, which increases the distance between the second positioning holes 25, avoids interference or contact between the worms 7 on adjacent second positioning holes 25, and improves the utilization rate of the second positioning holes 25; the three horizontal mesh wires 23 and the three longitudinal mesh wires 23 at each intersecting weaving point are then picked and pressed and woven in sequence, which can make the mesh surface 2 more stable and reduce the vertical displacement of the worm 7 inserted into the positioning hole.

[0060] The implementation principle of the embodiment of the present application is: before heat treatment, all the worms 7 need to be vertically inserted into the second positioning holes 25; in this embodiment, the weaving of the mesh surface 2 adopts a three-wire weaving method. When the worm 7 is vertically inserted into the second positioning hole 25, the lower annular protrusion 71 of the worm 7 is engaged with the mesh wire 23 of the second positioning hole 25 of the lower mesh surface 22, and the upper annular protrusion 72 of the worm 7 is placed on the mesh wire 23 of the second positioning hole 25 of the upper mesh surface 21; because there are three mesh wires 23 between each second positioning hole 25, the distance between the second positioning holes 25 is increased, which can avoid interference or contact between the worms 7 on adjacent second positioning holes 25, so the worms 7 are vertically inserted into the second positioning holes 25 of the mesh surface 2 in sequence to keep the worm 7 in a vertical state.

[0061] Other heat treatment operations remain unchanged.

[0062] Example 3:

[0063] The difference between Example 3 and Example 2 is that:

[0064] Reference Figure 5 and Figure 6The structure of the positioning protrusion is different. In this embodiment, the second positioning protrusion 6 is arranged on the top of the support column 4. The second positioning protrusion 6 is arranged to have a stepped structure. The second positioning protrusion 6 includes a plurality of sheets. A vertical side of the plurality of sheets is fixed together. The plurality of sheets are evenly distributed along the commonly fixed side, and gaps are formed between adjacent sheets.

[0065] The second positioning protrusion 6 includes a second plug-in end 61 at the top and a second fixed end 62 at the bottom. The second plug-in end 61 and the second fixed end 62 are both composed of multiple sheets. The number of sheets forming the second plug-in end 61 and the second fixed end 62 is equal and fixed correspondingly up and down. The side length of the sheet of the second plug-in end 61 is smaller than the side length of the sheet of the second fixed end 62.

[0066] The second plug-in end 61 is used to plug and cooperate with the support column 4 of the upper frame 1, and the second fixed end 62 is used to be fixedly connected to the top of the support column 4; the side length of the second plug-in end 61 is smaller than the diameter of the inner wall of the support column 4, so that the positioning protrusion can be easily plugged into the bottom of the support column 4 of the upper frame 1; the second fixed end 62 is located in the support column 4 and is welded and fixed to the support column 4, which can enhance the stability of stacking between multiple frames 1.

[0067] At the same time, the stepped structure of the second positioning protrusion 6 makes the interior of the stacked support columns 4 communicate with each other from top to bottom, so that the cooling medium remaining in the support columns 4 flows from the upper support column 4 to the lower support column 4, making it easy to discharge the remaining cooling medium.

[0068] The implementation principle of the embodiment of the present application is as follows: In this embodiment, before heat treatment, the operation of inserting all worms 7 into the second positioning holes 25 is the same as that in Example 2.

[0069] Then multiple frames 1 are stacked up and down through the support column 4. In this embodiment, a second positioning protrusion 6 is used on the top of the support column 4. When multiple frames 1 are stacked up and down, the second plug-in end 61 of the second positioning protrusion 6 on the top of the support column 4 of the lower frame 1 is plugged into the bottom of the support column 4 of the upper frame 1.

[0070] In this embodiment, the operation of heating the worm 7 is the same as that in the second embodiment.

[0071] After heating is completed, the tray and worm 7 in the processing chamber are cooled. Since the side walls of the mesh surface 2 are fixed to the fixing plate 3, when the mesh wire 23 contracts and deforms after cooling, the fixing plate 3, which has been away from the frame 1 after being heated, will move towards the frame 1 under the contraction and pull of the mesh wire 23, so that the mesh surface 2 continues to remain flat and the worm 7 continues to remain in a vertical state. At the same time, during cooling, the high-temperature steam in the chamber liquefies and flows into the support column 4. Since the second positioning protrusion 6 connects the interior of the stacked support columns 4 from top to bottom, the cooled liquid flows from the upper support column 4 to the lower support column 4 and then is discharged.

[0072] In this embodiment, after cooling is completed, the operation of removing the worm 7 is the same as that in embodiment 2.

[0073] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A tray for heat treatment of a worm, comprising a mesh surface (2) and a frame (1), wherein the mesh surface (2) is provided with two pieces and is respectively provided as an upper mesh surface (21) and a lower mesh surface (22), wherein the upper mesh surface (21) and the lower mesh surface (22) are respectively provided on the upper and lower sides of the frame (1); the upper mesh surface (21) and the lower mesh surface (22) are provided with positioning holes for a worm (7) to pass through, and the positioning holes of the upper mesh surface (21) and the lower mesh surface (22) correspond to each other one by one, characterized in that: It also includes a fixing sheet (3), wherein a plurality of fixing sheets (3) are provided, and the fixing sheets (3) are arranged on the outside of the frame (1), and the two ends of the fixing sheet (3) are respectively fixed to the side edges of the upper mesh surface (21) and the lower mesh surface (22); the fixing sheet (3) moves away from the frame (1) as the mesh surface (2) is stretched and deformed, and the fixing sheet (3) moves closer to the frame (1) as the mesh surface (2) is contracted and deformed.

2. A tray for worm heat treatment according to claim 1, characterized in that: The mesh surface (2) includes multiple groups of mesh wires (23), which are intersected vertically and horizontally and woven at intervals to form the mesh surface (2). A single group of mesh wires (23) is composed of multiple mesh wires (23). Each group of mesh wires (23) encloses a plurality of second positioning holes (25). Adjacent second positioning holes (25) are separated by a group of mesh wires (23). The lower annular protrusion (71) of the worm (7) is engaged with the second positioning hole (25) of the lower mesh surface (22), and the upper annular protrusion (72) of the worm (7) is mounted on the mesh wires (23) on the mesh surface (21).

3. A tray for worm heat treatment according to claim 1, characterized in that: The mesh surface (2) includes a plurality of mesh wires (23), which are intersected vertically and horizontally and woven at intervals to form the mesh surface (2). Each of the mesh wires (23) encloses a plurality of first positioning holes (24), and adjacent first positioning holes (24) are separated by one mesh wire (23). The lower annular protrusion (71) of the worm (7) is engaged with the first positioning hole (24) of the lower mesh surface (22), and the upper annular protrusion (72) of the worm (7) is mounted on the mesh wires (23) on the upper mesh surface (21).

4. A tray for worm heat treatment according to claim 1, characterized in that: The frame (1) comprises a first plate (11) and a second plate (12), wherein the first plate (11) and the second plate (12) are both provided in pairs, and the first plate (11) and the second plate (12) are connected to form a quadrilateral frame structure, and a plurality of support rods (13) are fixedly provided between the two first plates (11).

5. The tray for worm heat treatment according to claim 1, characterized in that: Support columns (4) are provided at the corners of the frame (1), and a plurality of frames (1) are plugged together via the support columns (4).

6. A tray for worm heat treatment according to claim 5, characterized in that: The support column (4) is configured to be hollow inside, and a first positioning protrusion (5) is provided on the top of the support column (4). The first positioning protrusion (5) comprises a first plug-in end (51) and a first fixed end (52). The diameter of the first plug-in end (51) is smaller than the inner diameter of the support column (4), and the first fixed end (52) is fixed to the support column (4).

7. A tray for worm heat treatment according to claim 5, characterized in that: The support column (4) is configured to be hollow inside, and a second positioning protrusion (6) is provided on the top of the support column (4). The cross section of the second positioning protrusion (6) is a stepped structure. The second positioning protrusion (6) includes a plurality of sheets, the plurality of sheets are fixed to each other, and gaps are formed between the sheets. The second positioning protrusion (6) communicates with the interior of the support column (4).

8. A tray for worm heat treatment according to claim 7, characterized in that: The second positioning protrusion (6) comprises a second plug-in end (61) and a second fixed end (62), the sheet of the second plug-in end (61) corresponds one-to-one to the sheet of the second fixed end (62); the side length of the sheet of the second plug-in end (61) is smaller than the inner diameter of the support column (4), and the second fixed end (62) is fixed to the support column (4).

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