Fastener disc material annealing rack

Abstract

The utility model relates to the field of fastener production, and discloses a fastener disc material annealing rack, which comprises a blanking rack and a feeding rack, the blanking rack and the feeding rack both comprise cylindrical supporting cylinders, the bottom of each supporting cylinder is fixedly provided with an annular bottom plate, the inner hole of each bottom plate is smaller than the inner hole of each supporting cylinder, the height of the blanking rack is smaller than 1.8 m, the height of the feeding rack is smaller than 1.5 m, and the bottom of each supporting cylinder is fixedly provided with an annular bottom plate. The feeding frame is stacked on the top of the discharging frame for use, a plurality of conical stiffening plates are fixed to the inner wall of a supporting cylinder of the discharging frame in the vertical direction, a plurality of vertical stiffening ribs are arranged at the upper ends of the conical stiffening plates, a plurality of air holes are formed in the supporting cylinder of the discharging frame and the supporting cylinder of the feeding frame, and hoisting mechanisms are arranged at the top end of the discharging frame and the top end of the feeding frame. According to the utility model, the problems in the prior art that a plurality of coils of wire rod raw materials are sleeved on one material rack during annealing, so that the supporting plate at the bottom of the material rack is very easy to deform and damage in the long-term use process of the material rack, and the wire rod raw materials are difficult to stably place and support can be solved.

Description

Technical Field

[0001] The utility model relates to the field of fastener production, in particular to a fastener coil annealing rack. Background Art

[0002] Fasteners such as bolts and screws are made by annealing, drawing, cutting, cold heading, thread rolling or thread rolling of wire rod steel. Annealing is because the wire rod raw material usually has a high hardness, which is not conducive to the subsequent drawing, cold heading, thread rolling or thread rolling processing and forming. Annealing can effectively reduce the hardness of the wire rod raw material, making it easy to process and eliminate the residual stress in the wire rod raw material. Usually the wire rod raw material is coiled into a roll, and the weight of a roll reaches several tons. During annealing, one or more rolls of wire rod raw material are placed on a columnar material rack with a pallet at the bottom, and then the material rack and the raw material are hoisted as a whole by a crane and placed into the annealing furnace for annealing. The temperature in the annealing furnace reaches hundreds of degrees Celsius, and the material rack is heated red by high temperature, and the plasticity is improved. When it is loaded with a large amount of wire rod raw material, the weight of the wire rod raw material is completely loaded on the material rack, resulting in the pallet at the bottom of the material rack being easily deformed and damaged during long-term use, and it is difficult to stably place and support the wire rod raw material. Utility Model Content

[0003] The utility model aims to provide a fastener coil annealing rack to solve the problem in the prior art that multiple coils of wire rod raw materials are placed on one rack during annealing, resulting in the rack's bottom support plate being easily deformed and damaged during long-term use, making it difficult to stably place and support the wire rod raw materials.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a fastener disc annealing rack, including a lower rack and an upper rack, the lower rack and the upper rack both include a cylindrical supporting tube, the bottom of the supporting tube is fixed with a circular ring-shaped bottom plate, the inner hole of the bottom plate is smaller than the inner hole of the supporting tube, the height of the lower rack is less than 1.8m, the height of the upper rack is less than 1.5m, the upper rack is stacked on the top of the lower rack for use, a plurality of conical cylindrical stiffening plates are vertically fixed to the inner wall of the supporting tube of the lower rack, a plurality of vertical stiffening ribs are provided on the upper end of the conical cylindrical stiffening plate, a plurality of air holes are provided on the supporting tubes of the lower rack and the upper rack, and a lifting mechanism is provided on the top of the lower rack and the upper rack.

[0005] Preferably, as an improvement, three layers of stiffening plates are arranged at equal intervals vertically, and the distance between the bottom layer of stiffening plates and the bottom plate of the unloading rack does not exceed 200 mm.

[0006] Preferably, as an improvement, six stiffening ribs are evenly arranged along the circumference of the support tube of the material rack, and the air holes on the support tube of the material rack are located in the area enclosed by the stiffening plate and the stiffening ribs.

[0007] Preferably, as an improvement, the air holes are vertical oblong holes, and the size of the air holes is 100 mm*250 mm.

[0008] Preferably, as an improvement, the thickness of the bottom plate is twice the thickness of the wall of the support tube.

[0009] Preferably, as an improvement, a reinforcement ring is fixed to the outer side of the bottom of the support tube of the unloading rack, and the wall thickness of the reinforcement ring is the same as the wall thickness of the support tube.

[0010] Preferably, as an improvement, an annular support plate is fixed on the inner side of the top end of the support tube, and the lifting mechanism includes two side-by-side support plates, the support plate is located on the inner side of the support tube, side plates are fixed on the left and right sides of the support plate, the side plates are fixed on the support tube, the upper parts of the two support plates are located above the support tube, and a lifting rod is fixedly connected between the upper parts of the two support plates.

[0011] Preferably, as an improvement, the side panels on the left and right sides of a single support plate are inclined toward the side of the support plate away from the suspension rod, and the lower part of the side panels is fixed to the inner wall of the support tube and the support plate.

[0012] Preferably, as an improvement, a reinforcing plate is vertically fixed to the middle of the support plate on the side away from the suspension rod, and the reinforcing plate is fixed to the inner wall of the support tube and the support plate.

[0013] Preferably, as an improvement, the upper end of the side plate is inclined from the top end of the support plate to the upper end of the support plate.

[0014] The principles and advantages of this solution are: in actual application, the bottom plate provides bottom support, the support tube provides middle support, and during annealing, the wire rod is placed on the outside of the support tube and supported by the bottom plate. The air holes form an airflow path on the inside of the wire rod, which can ensure smooth air circulation and sufficient discharge of oxygen, water vapor, methanol gas, etc. in the wire rod. In this way, during the annealing process, on the one hand, the outside and inside of the wire rod can be heated evenly, and a uniform metallographic structure with better performance can be obtained after overall annealing; on the other hand, it can ensure that the protective atmosphere completely and thoroughly carries away impurities on the surface of the wire rod, ensuring the annealing quality. The support tube with a cylindrical structure has better bending and torsion resistance, and the support for the wire rod is more stable under the high temperature environment of annealing, so that the stacked wire rod is stable and will not be skewed and cause pressure injuries. The annular bottom plate provides stable bottom support for the wire rod, and the hoisting mechanism provides a hoisting grabbing position for the whole.

[0015] By using the upper and lower racks in combination, the height of a single rack is reduced by more than one third compared with the prior art, and the height of the two racks is slightly higher after being combined. The lower rack bears most of the weight of the wire rods at the bottom, and its bottom plate and support tube have sufficient structural strength. For example, under the same circumstances, seven rolls of wire rods weighing one ton each are annealed. In the prior art, all of them are placed on one rack and enter the annealing furnace. The weight of seven tons is almost entirely loaded on the bottom plate of the rack, and the support tube does not bear a large load, resulting in the bottom plate being easily deformed and damaged during use, and the service life of the rack is short. By adopting the solution of the utility model, five tons of wire rods can be placed on the lower rack, and two tons of wire rods can be placed on the upper rack. The load borne by the bottom plate of the lower rack is greatly reduced compared with the prior art, and the load borne by the bottom plate of the upper rack is even smaller. Even if the bottom plate does not contact the bottom of the annealing furnace, the wire rod can be stably supported. First, the unloading rack is hoisted into the annealing furnace and then the loading rack is hoisted and superimposed on the top of the unloading rack. The loading rack and the remaining two tons of load are evenly applied to the supporting tube of the unloading rack through the bottom plate of the loading rack. The supporting tube of the unloading rack with the addition of stiffening plates, stiffening ribs and reinforcing rings can easily bear the load applied by the loading rack and the wire rod. Therefore, both the loading rack and the unloading rack can ensure that the structure is stable and not easy to deform and damage. In the annealing process of the same amount of wire rod under the same space occupancy, the combined rack of the technical solution of the utility model has a longer service life, is less likely to be deformed and damaged, and can stably and reliably support the wire rod for annealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of an embodiment of the utility model.

[0017] Figure 2 It is a top view of an embodiment of the utility model.

[0018] Figure 3 Figure 2 Middle AA section view. DETAILED DESCRIPTION

[0019] The following is further described in detail through specific implementation methods:

[0020] The figure marks in the drawings of the specification include: base plate 1, support tube 2, air vent 3, reinforcement ring 4, base plate inner hole 5, support plate 6, support plate 7, side plate 8, reinforcement plate 9, hanger 10, stiffening plate 11, stiffening rib 12, lower material rack 13, upper material rack 14.

[0021] The embodiment is basically as shown in the attached Figure 1 As shown: the fastener coil annealing rack includes a lower rack 13 and an upper rack 14, as shown in FIG. Figure 2 As shown, the lower rack 13 and the upper rack 14 both include a cylindrical support tube 2, and a circular bottom plate 1 is welded and fixed to the bottom of the support tube 2. Figure 3As shown, the thickness of the bottom plate 1 is twice the wall thickness of the support tube 2, and the inner hole 5 of the bottom plate is smaller than the inner hole of the support tube 2. The height of the lower material rack 13 is less than 1.8m, and the height of the upper material rack 14 is less than 1.5m. The upper material rack 14 is stacked on the top of the lower material rack 13 for use. Three conical cylindrical stiffening plates 11 are welded and fixed vertically on the inner wall of the support tube 2 of the lower material rack 13. The conical cylindrical stiffening plates 11 are arranged downward, and the distance between the bottom stiffening plate 11 and the bottom plate 1 of the lower material rack 13 does not exceed 200mm. A plurality of vertical stiffening ribs 12 are provided at the upper end of the conical cylindrical stiffening plate 11. The stiffening ribs 12 are welded and fixed to the stiffening plates 11 and the support tube 2. Six stiffening ribs 12 are evenly arranged along the circumference of the support tube 2 of the lower material rack 13. A reinforcing ring 4 is welded and fixed to the outer side of the bottom of the support tube 2 of the lower material rack 13. The wall thickness of the reinforcing ring 4 is the same as the wall thickness of the support tube 2.

[0022] The support tubes 2 of the lower rack 13 and the upper rack 14 are provided with a plurality of air holes 3, which are vertical oblong holes with a size of 100mm*250mm. The air holes 3 on the support tubes 2 of the lower rack 13 are located in the area enclosed by the stiffening plate 11 and the stiffening ribs 12.

[0023] The top of the lower rack 13 and the upper rack 14 are both provided with a lifting mechanism. An annular supporting plate 6 is fixed to the inner side of the top of the supporting cylinder 2. The lifting mechanism includes two side-by-side supporting plates 7. The supporting plates 7 are located inside the supporting cylinder 2. The upper parts of the two supporting plates 7 are located above the supporting cylinder 2. A lifting rod 10 is welded and fixed between the upper parts of the two supporting plates 7. Figure 3 As shown, side plates 8 are welded and fixed on the left and right sides of the support plate 7. The side plates 8 on the left and right sides of the single support plate 7 are tilted toward the side of the support plate 7 away from the suspension rod 10. The lower part of the side plate 8 is welded and fixed to the inner wall of the support tube 2 and the support plate 6. The upper end of the side plate 8 is tilted from the top of the support plate 7 to the upper end of the support plate 6. A reinforcing plate 9 is vertically welded and fixed to the middle part of the side of the support plate 7 away from the suspension rod 10. The reinforcing plate 9 is welded and fixed to the inner wall of the support tube 2 and the support plate 6.

[0024] The specific implementation process is as follows: During the production process, the wire rod is first treated with pickling, phosphating, and saponification for surface treatment, and then annealed. When annealing wire rods of the same weight as in the prior art, more than two-thirds of the weight of the wire rods is loaded onto the unloading rack 13, and the remaining weight of the wire rods is loaded onto the loading rack 14. The weight loads borne by the unloading rack 13 and the bottom plate 1 of the loading rack 14 are less than those in the prior art, and the support tube 2 of the unloading rack 13 is added as a load-bearing structure. Through the hook connection of the crane and the hook of the boom 10, the crane lifts the unloading rack 13 loaded with wire rods as a whole and hoists it into the annealing furnace, and then hoists the loading rack 14 to the top of the stacked unloading rack 13, and aligns it with the middle hole of the bottom plate 1 of the loading rack 14 through the top hoisting structure of the unloading rack 13. The wire rods are subjected to high-temperature annealing in the annealing furnace, and a protective atmosphere is provided to ensure the annealing quality. During the annealing process, the air holes 3 provide air flow channels so that the outer and inner sides of the stacked wire rods can be fully and evenly heated. The acid and saponified substances remaining on the surface of the wire rods evaporate at high temperature and are fully and thoroughly removed and eliminated after being engulfed by the protective atmosphere. The support tube 2 provides stable and reliable lateral support for the stacked wire rods through a cylindrical structure with a larger diameter, ensuring that the wire rods will not tilt and will not crush and damage the wire rods below, thereby ensuring the annealing quality of the wire rods. The weight carried by a single bottom plate 1 of the upper rack 14 and the lower rack 13 is reduced, and the probability of being crushed and deformed by the wire rods during long-term annealing is reduced, the service life of the rack is relatively increased, and the production cost caused by the maintenance and replacement of the rack is reduced.

[0025] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. Fastener coil annealing rack, characterized by: It includes a lower material rack and an upper material rack. Both the lower material rack and the upper material rack include a cylindrical supporting tube. A circular bottom plate is fixed to the bottom of the supporting tube. The inner hole of the bottom plate is smaller than the inner hole of the supporting tube. The height of the lower material rack is less than 1.8m, and the height of the upper material rack is less than 1.5m. The upper material rack is stacked on the top of the lower material rack for use. A plurality of conical cylindrical stiffening plates are vertically fixed to the inner wall of the supporting tube of the lower material rack. A plurality of vertical stiffening ribs are provided on the upper end of the conical cylindrical stiffening plates. A plurality of air holes are provided on the supporting tubes of the lower material rack and the upper material rack. A lifting mechanism is provided on the top of the lower material rack and the upper material rack.

2. The fastener coil annealing rack according to claim 1, characterized in that: The stiffening plates are arranged in three layers at equal intervals vertically, and the distance between the bottom stiffening plate and the bottom plate of the unloading rack does not exceed 200 mm.

3. The fastener coil annealing rack according to claim 2, characterized in that: Six stiffening ribs are evenly arranged along the circumference of the support tube of the material rack, and the air holes on the support tube of the material rack are located in the area enclosed by the stiffening plate and the stiffening ribs.

4. The fastener coil annealing rack according to claim 3, characterized in that: The ventilation hole is a vertical oblong hole, and the size of the ventilation hole is 100mm*250mm.

5. The fastener coil annealing rack according to claim 4, characterized in that: The thickness of the bottom plate is twice the thickness of the support tube wall.

6. The fastener coil annealing rack according to claim 5, characterized in that: A reinforcing ring is fixed on the outer side of the bottom of the support tube of the unloading rack, and the wall thickness of the reinforcing ring is the same as that of the support tube.

7. The fastener coil annealing rack according to claim 6, characterized in that: An annular support plate is fixed on the inner side of the top end of the support tube. The lifting mechanism includes two side-by-side support plates, which are located on the inner side of the support tube. Side plates are fixed on the left and right sides of the support plates, which are fixed on the support tube. The upper parts of the two support plates are located above the support tube, and a lifting rod is fixedly connected between the upper parts of the two support plates.

8. The fastener coil annealing rack according to claim 7, characterized in that: The side plates on the left and right sides of the single support plate are both inclined toward the side of the support plate away from the suspension rod, and the lower part of the side plate is fixed on the inner wall of the support tube and the support plate.

9. The fastener coil annealing rack according to claim 8, characterized in that: A reinforcing plate is vertically fixed to the middle of the support plate on the side away from the suspension rod, and the reinforcing plate is fixed to the inner wall of the support tube and the support plate.

10. The fastener coil annealing rack according to claim 9, characterized in that: The upper end of the side plate is inclined from the top of the support plate to the upper end of the support plate.

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