A material tray capable of avoiding deformation of the bottom of a large bulk tray copper pipe

Abstract

The utility model discloses a material tray capable of avoiding deformation of copper pipe bottom of big loose tray, relates to hard state big loose tray annealing technical field, and aims at solving the problem of flat pipe in the annealing process in prior art, adopts the technical scheme that places annealing material tray on both sides of material receiving support plate, and places stainless steel net pad on the annealing material tray. The utility model can support the coil pipe of both sides of material receiving support plate, and after the pipe material softens when annealing, still can the smooth of position bottom surface, make the surface of product smooth and round. Still use the existing material receiving support plate to carry out the support plate of coil pipe transfer, can be used in collocation with the transfer material tray and the delivery material tray, is convenient for recycling material receiving support plate, realizes the internal circulation of annealing material tray and material receiving support plate, and the transfer of coil pipe is safer, and will not appear surface scratch.

Description

Technical Field

[0001] This utility model relates to the field of hard-state large-dispersion annealing technology, specifically a material tray that can avoid deformation of the bottom of the copper tube in a large-dispersion tray. Background Technology

[0002] In the production process of hard-state large-dispersion discs, such as Figures 1 to 4 As shown, a crane is needed to lift the coil 4 on the transfer tray 1 along with the receiving tray 2 onto the annealing rack 3. The coil is then fed into the annealing furnace via the roller conveyor below the annealing rack 3. However, during the annealing process, the coil 4 undergoes a process of heating to 600℃ and then cooling back to room temperature. During the heating process, the coil 4 gradually changes from a hard state to a soft state. At this time, due to the significant weight of the coil 4 on both sides of the receiving tray 2, and the lack of support structures on both sides of the receiving tray 2, the portion of the coil 4 on both sides of the receiving tray 2 will sag slightly, causing the bottom ring of the coil 4 to sag at the junction with the edge of the receiving tray 2 (e.g., ...). Figure 4 Point A shown will result in a flat tube, causing the bottom copper tube to be scrapped and unusable.

[0003] Chinese patent CN216688245U discloses a metal pipe annealing turnover bracket, which includes a tray with a support on the bottom surface of the tray and a hook on the support. The tray can support the coil 4 during annealing to prevent the formation of flat tubes. However, after annealing, the bracket needs to be transferred externally with the product or the coiled product needs to be transferred to the discharge pallet for shipment. External transfer will result in an excessively long turnover cycle. Moreover, since the entire bracket is made of stainless steel, it is relatively heavy. External transfer will significantly increase logistics costs. Furthermore, the transfer of the product between the dedicated bracket and the discharge pallet will increase the risk of wear on the surface of the pipe. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a material tray that can avoid deformation of the bottom of the large loose copper tube, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, this utility model discloses a material tray that can prevent deformation of the bottom of large loose copper tubes. The technical solution includes a receiving plate with hook holes and an annealing tray. The main body of the annealing tray is a second tray body, which has a plate-like structure with expansion slits at its edges. A through-hole is formed on the surface of the second tray body. The thickness of the second tray body is less than the thickness of the receiving plate. A mesh pad is placed on the second tray body, the thickness of which is the difference between the thickness of the receiving plate and the second tray body. By setting the annealing tray and mesh pad on both sides of the receiving plate, the coils on both sides of the receiving plate can be supported during annealing to prevent sagging during softening. The expansion slits on the annealing tray provide space for its own expansion during annealing, preventing deformation. The through-hole allows nitrogen gas to pass through and fully contact the coils.

[0006] As a preferred embodiment of this utility model, the receiving pallet is a rectangular plate, and the hook hole is located at the center of the plate; there are hand holes at both ends of the plate. The hook hole is located at the center of the plate, which facilitates maintaining the balance of the plate during lifting, while the hand holes at both ends facilitate the retrieval of the receiving pallet after the annealed coils are hoisted to the delivery tray.

[0007] In a preferred embodiment of this invention, the second disc of the annealing tray is a fan-shaped plate, and there are two second discs, respectively disposed on both sides of the receiving tray. This provides support for the coils on both sides of the receiving tray.

[0008] As a preferred technical solution of this utility model, the expansion joint has two sets, one set is connected to the outer ring surface of the second disc, and the other set is connected to the inner ring surface of the second disc.

[0009] As a preferred embodiment of this invention, the mesh pad slides in contact with the annealing tray.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: By placing two annealing trays on both sides of the receiving tray and then placing a mesh pad on the annealing trays, the coils on both sides of the receiving tray can be supported. Even after the tubes soften during annealing, the bottom surface remains flat, resulting in a smooth and round product surface. The existing receiving tray is still used for coil transfer, and the receiving tray can be used in conjunction with the transfer tray and the shipping tray, facilitating the recovery of the receiving tray and enabling internal circulation between the annealing tray and the receiving tray. Furthermore, the transfer of coils is safer, preventing surface scratches. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the existing material transfer tray structure; Figure 2This is a schematic diagram of the existing material receiving pallet structure; Figure 3 A schematic diagram of a material receiving pallet structure for a material transfer tray in existing technology; Figure 4 This is a schematic diagram of existing coil annealing technology; Figure 5 This is a schematic diagram of the coil annealing of this utility model; Figure 6 This is a schematic diagram of the structure of this utility model; Figure 7 This is a schematic diagram of the annealing tray structure of this utility model; Figure 8 Schematic diagram of loading coils onto the shipping tray; Figure 9 This is a schematic diagram of the material tray structure for shipment.

[0012] In the diagram: 1. Transfer tray; 101. First tray body; 102. First receiving groove; 103. First clearance hole; 2. Receiving tray; 201. Plate body; 202. Hook hole; 203. Hand hole; 3. Annealing rack; 4. Coil; 5. Annealing tray; 501. Second tray body; 502. Expansion joint; 503. Air vent; 6. Mesh pad; 7. Discharge tray; 701. Third tray body; 702. Second receiving groove; 703. Second clearance hole; 8. Pad layer. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0014] like Figures 5 to 7 As shown, this utility model discloses a material tray that can prevent deformation of the bottom of large loose copper tubes. The technical solution adopted includes a receiving tray 2 and an annealing tray 5, as shown. Figure 2 As shown, the receiving tray 2 has a rectangular plate structure 201 with a thickness of 12mm. The center of the plate 201 has a hook hole 202, and both ends have hand holes 203. Annealing trays 5 are located on both sides of the receiving tray 2. Figure 7As shown, the annealing tray 5 is a 10mm thick, 180-degree angled fan-shaped plate structure. The second tray body 501 of the annealing tray 5 is made of 1Cr18Ni9Ti material, with an outer ring radius of 500mm. Expansion slots 502 and vent holes 503 are opened on the tray surface. The expansion slots 502 have long and short slots. The long slots are 150mm long and 5mm wide, and are located on the inner ring of the second tray body 501. The short slots are 50mm long and 5mm wide, and are located on the outer ring of the second tray body 501. The long and short slots are staggered. The expansion slots 502 can provide expansion space during annealing and prevent the second tray body 501 from deforming. The second tray body 501 is provided with 64 φ25mm vent holes 503 to facilitate the passage of nitrogen gas during annealing. The tray is required to have a flatness of ≤0.3 on the upper and lower surfaces after manufacturing. The cuts and edges are deburred and polished smooth to avoid flattening or damaging the copper tube due to unevenness or surface burrs.

[0015] A stainless steel mesh pad 6 is placed on the annealing tray 5. The mesh pad 6 is 2mm thick. After the mesh pad 6 is stacked on the annealing tray 5, its overall thickness is equivalent to the thickness of the plate 201 of the receiving tray 2.

[0016] The working principle of this utility model: Two annealing trays 5 are placed in a mirror image of the annealing rack 3, with a distance of one plate 201 width between the two annealing trays 5. A mesh pad 6 is placed on the second tray 501 of the annealing tray 5.

[0017] The receiving tray 2 is located in the first receiving groove 102 of the transfer tray 1. The upper surface of the receiving tray 2 is flush with the upper surface of the first tray body 101. The coil 4 to be annealed is located on the first tray body 101. The operator passes the lifting tool through the inner ring of the coil 4 and the hook hole 202 of the receiving tray 2. The first clearance hole 103 in the center of the first receiving groove 102 is larger than the hook hole 202. The lifting tool can hook the hook hole 202 in the first clearance hole 103. As the lifting tool rises, the receiving tray 2 and the coil 4 are lifted away from the transfer tray 1.

[0018] The staff used the hoist to lift the receiving tray 2 and the coil 4 to the top of the annealing rack 3. With the assistance of the staff next to the annealing rack 3, the receiving tray 2 was placed between the two annealing trays 5, and the coils 4 on both sides of the receiving tray 2 were placed on the mesh pad 6.

[0019] Remove the lifting device from the receiving tray 2, and send the receiving tray 2, annealing rack 3, coil 4, annealing tray 5 and mesh pad 6 into the annealing furnace via the roller conveyor. Anneal the coil 4. During the annealing process, the expansion joint 502 can prevent the second tray 501 from deforming due to repeated temperature rise and fall under annealing, and the air passage 503 can optimize nitrogen convection and facilitate the passage of nitrogen.

[0020] After annealing, the roller conveyor sends the receiving tray 2, annealing rack 3, coil 4, annealing tray 5 and mesh pad 6 out of the annealing furnace. A lifting tool is used to pass through the inner ring of the cooled coil 4 and hook onto the hook hole 202 of the receiving tray 2 to lift the hardened receiving tray 2 and coil 4 away from the annealing rack 3, annealing tray 5 and mesh pad 6.

[0021] A padding layer 8, made of corrugated cardboard, is laid on the third tray 701 of the shipping tray 7. The third tray 701 has a second receiving groove 702 in the middle to accommodate the receiving tray 2, and a second clearance hole 703 within the second receiving groove 702. A lifting device hoists the receiving tray 2 and the coil 4 above the third tray 701 and gradually lowers them. With the assistance of personnel below, the receiving tray 2 falls into the second receiving groove 702, and the coil 4 sits on the padding layer 8. The depth of the second receiving groove 702 is the same as the thickness of the receiving tray 2. Therefore, after the coil 4 sits on the padding layer 8, the receiving tray 2 will detach from the coil 4. Personnel can then reach into the handhole 203 to pull the receiving tray 2 out of the second receiving groove 702 for recycling. After packaging the coil 4 on the shipping tray 7, it is ready for warehousing and shipping.

[0022] The mechanical connection involved in this utility model is a common method used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments. It is common knowledge.

[0023] Components not described in detail in this article are existing technologies.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A material tray that can prevent deformation of the bottom of large loose copper tubes, comprising a receiving tray (2), wherein the receiving tray (2) has hook holes (202), characterized in that: It also includes an annealing tray (5), the main body of which is a second tray (501). The second tray (501) is a plate-shaped structure with an expansion joint (502) at its edge. A through-hole (503) is provided on the surface of the second tray (501). The thickness of the second tray (501) is less than the thickness of the receiving tray (2). There is a mesh pad (6) on the second tray (501). The thickness of the mesh pad (6) is the difference between the thickness of the receiving tray (2) and the second tray (501).

2. The material tray according to claim 1, which can avoid deformation of the bottom of the large loose copper tube, is characterized in that: The receiving tray (2) has a rectangular plate (201) and the hook hole (202) is located at the center of the plate (201); there are hand holes (203) at both ends of the plate (201).

3. The material tray according to claim 1, which can avoid deformation of the bottom of the large loose copper tube, is characterized in that: The second plate (501) of the annealing tray (5) is a fan-shaped plate, and there are two second plates (501), which are respectively located on both sides of the receiving tray (2).

4. The material tray according to claim 3, which can avoid deformation of the bottom of the large loose copper tube, is characterized in that: The expansion joint (502) has two sets, one set is connected to the outer ring surface of the second disc (501), and the other set is connected to the inner ring surface of the second disc (501).

5. The material tray according to claim 1, which can avoid deformation of the bottom of the large loose copper tube, is characterized in that: The mesh pad (6) slides in contact with the annealing tray (5).

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