Epoxy resin composite frosted coating steel bar production line

Abstract

The utility model provides an epoxy resin composite frosted coating steel bar production line which comprises a feeding device, a shot blasting device, a heating device, an electrostatic spraying device, a spraying cooling device and a discharging device, and a roller way is provided with a first rack, a plurality of first rollers, a second rack and a plurality of second rollers. A blocking piece is arranged between a first roller on the side, close to the heating device, of the first rack and the heating device, a receding hole is formed in the blocking piece, and a product can penetrate through the receding hole. A pushing displacement assembly is mounted in the first rack, the pushing displacement assembly comprises a pushing driving part and a pushing part, and the pushing driving part is used for driving the pushing part to push a product on the first roller to move by a specified distance in the axial direction of the first roller; a water tank is arranged on the second machine frame, a water absorption layer is wound on the second roller on the water tank, and the water absorption layer can be partially immersed in water of the water tank, so that buffering feeding of products is achieved, and more moisture generating a steam layer is provided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of coating steel bar production equipment, especially an epoxy resin composite frosted coating steel bar production line. BACKGROUND

[0002] Epoxy resin coated steel bars are produced by spraying epoxy resin powder on the surface of ordinary ribbed steel bars and ordinary plain round steel bars under factory production conditions using electrostatic spraying method. The epoxy resin coated steel bars have good corrosion resistance, but the bonding strength with concrete is significantly reduced, and are suitable for use in the reinforced concrete structures of industrial and civil buildings, general structures, roads, bridges, ports and wharfs, etc.

[0003] In the existing production line, the steel bars are sent into the intermediate frequency heating equipment and the spraying equipment in turn after being shot blasted. In order to ensure the uniformity of heating, the intermediate frequency heating equipment is designed in the form of coil heating, and only one steel bar can be input into each heating hole. However, the number of steel bars that can be input into the intermediate frequency heating equipment at one time is limited (obviously smaller than the shot blasting equipment), and the steel bars blasted by the shot blasting equipment are transported together in batches. The existing roller bed cannot separate and temporarily store part of the products, and all the products will be pushed to the intermediate frequency heating equipment together, so the products will be stacked at the inlet end of the intermediate frequency heating equipment to block the inlet. Therefore, the shot blasting equipment can only process the same number of steel bars as the number of steel bars that can be input into the intermediate frequency heating equipment at one time. However, the time consumed by the shot blasting process is more than twice the time of steel bar heating and coating spraying. This causes the spraying equipment to wait for the incoming steel bars after the shot blasting equipment is newly blasted, which leads to a long waiting time of the spraying equipment, and makes the shot blasting equipment become a bottleneck, which seriously affects the production efficiency. In addition, the epoxy coated steel bars will be cooled by spraying after being electrostatically sprayed, and the sprayed steel bars are sent to the spraying section for cooling by the roller bed. Since the temperature of the just sprayed steel bars is high, the epoxy resin has not completely solidified and adsorbed on the steel bars. If the cooling is too fast, the epoxy resin cannot be fully adsorbed on the surface of the steel bars, which is easy to peel off during subsequent use. Therefore, the traditional production line needs to transport the steel bars on the roller bed for a distance for natural cooling. However, the natural cooling speed is slow, and the epoxy resin coating on the surface of the steel bars sprayed with epoxy resin will peel off and adhere to the roller at this time, which requires rework to fill the peeled part to meet the requirements during subsequent use of the steel bars. In addition, the high temperature of the steel bars will be transferred to the roller, which affects the service life of the roller. Although the existing equipment immerses the roller in a water tank and provides a nozzle to spray water into the groove for cooling (the water does not directly contact the steel bars), the water quickly falls back into the water tank due to gravity, only a small amount of water droplets are left in the groove, and the water droplets evaporate quickly due to the high initial temperature of the steel bars. In addition, the roller conveying speed cannot be too fast, which causes the steel bars to still contact the roller for a short period of time, so the problem of epoxy coating adhering to the groove of the roller still exists. As shown in the patent document with the publication number CN201543577U. Utility model content

[0004] To solve the above problems, the utility model aims at providing an epoxy resin composite frosted coating steel bar production line.

[0005] The utility model adopts the following method to realize: an epoxy resin composite frosted coating steel bar production line, including feeding device, shot blasting equipment, heating equipment, electrostatic spraying equipment, spray cooling equipment and discharging device, the roll table that links the shot blasting equipment and heating equipment has first rack and a plurality of first roller, every first roller is provided with a plurality of grooves along the axial direction interval, the roll table that links the spray cooling equipment and electrostatic spraying equipment has second rack and a plurality of second roller, the first roller of first rack is close to the side of heating equipment and is equipped with blocking piece between the heating equipment, the blocking piece is located on the movement path of product, the blocking piece is equipped with the hole that gives place with the number, position of the feed port of heating equipment, the hole that gives place is crossed by product, the position of avoiding the first roller in the first rack is installed with push displacement assembly, the push displacement assembly includes push driving part and push piece, the push driving part is used to drive the push piece push product on the first roller and moves the specified distance along the axial direction of first roller, to make the product that does not align the hole that gives place moves to the position that aligns the hole that gives place, the water tank is equipped on the second rack, the water tank is filled with water, the second roller above the water tank of second rack is wound with water absorption layer, and the water absorption layer can be partially immersed in the water in the water tank.

[0006] Preferably, the push piece includes a lifting plate, the lifting plate is installed on the push driving part, a plurality of push blocks are provided on the lifting plate, each push block is opposite to the moving track of the product that does not align the hole that gives place, an inclined surface is provided on each push block, and the inclined surfaces of each push block face the same direction and face the moving track of the product that aligns the hole that gives place on the same side.

[0007] Preferably, the push driving part is a first telescopic rod, and the lifting plate is installed on the extension end of the first telescopic rod.

[0008] Preferably, a plurality of push blocks are equidistantly spaced on the upper surface of the lifting plate, the interval width of two adjacent push blocks is equal to the width of the groove, and the interval of the two adjacent push blocks is opposite to a groove.

[0009] Preferably, the center distance between two adjacent push blocks is twice the distance between two adjacent grooves on a single first roller; the number of grooves on a single first roller is twice the number of the clearance holes or more, and the number of push blocks is the number of grooves minus the number of clearance holes; each clearance hole is opposite to a groove, and between two adjacent clearance holes, there are a number of grooves corresponding to the multiple.

[0010] Preferably, an alignment assembly is further arranged between the blocking member and the heating device, the alignment assembly comprising an alignment plate and an alignment driving member, the alignment plate being connected with the alignment driving member, and the alignment driving member being used to drive the alignment plate to move to block or avoid the inlet end of the heating device.

[0011] Preferably, the alignment driving member comprises a rotating shaft and a second telescopic rod, the rotating shaft being rotatably installed on a first frame of the roller table which is butted against the inlet end of the heating device, the alignment plate being fixed to the outer circumferential surface of the rotating shaft, the alignment plate being provided with a connecting rod on the side facing the heating device when the alignment plate is in the blocking state, and the connecting rod being movably connected with the second telescopic rod to drive the rotating shaft to rotate and in turn drive the alignment plate to move to the blocking position and the avoiding position.

[0012] Preferably, the first frame butted against the inlet end of the heating device is provided with bearing seats on both sides in the product running direction, and the two ends of the rotating shaft are connected with the corresponding bearing seats through bearings; the axis of the rotating shaft is at the same height as the axis of the second roller; the diameter of the rotating shaft is less than or equal to the minimum diameter of the groove of the second roller; the cylinder of the second telescopic rod is hinged to the ground, and the elongated end of the second telescopic rod is hinged to the connecting rod.

[0013] Preferably, the water surface in the water tank is higher than the lowest end of the circumferential surface on which the second roller is installed; and the water absorption layer is cloth or sponge.

[0014] Preferably, the electrostatic spraying device is provided with a spraying cavity, and a row of spray heads is symmetrically arranged in the upper part and the bottom part of the spraying cavity, and the product passes between the spray heads in the upper part and the bottom part.

[0015] The utility model discloses an epoxy resin composite frosted coating reinforced bar production line, compared with prior art, the utility model discloses at least have following technical effect: 1. through setting blocking piece and push displacement assembly on the first frame near heating equipment side, can to the product after throwing the shot temporarily allocate, make throwing the shot equipment can process more product once, temporarily allocate in buffer feedway and gradually allocate and send into the intermediate -frequency heating equipment, set blocking piece, and let the hole is equipped with in blocking piece, make the product that is not in line with let the hole is blocked, the product in line with let the hole can pass let the hole and send into heating equipment, make the product that is blocked stay on the first roller temporarily, then drive push piece through the push drive piece of push displacement assembly, and the product on the first roller is pushed by push piece and will make the product that is not in line with let the hole in line with let the hole, can send the product that is blocked into heating equipment, avoid product to accumulate and block in heating equipment import end, effectively solve the problem that the production capacity of throwing the shot equipment and the feeding capacity of intermediate -frequency heating equipment do not match in the existing equipment and limit the number of throwing the shot of throwing the shot equipment, improve the production efficiency of whole epoxy coating reinforced bar production line, set the water tank on the second frame between electrostatic spraying equipment and spray cooling equipment for the water absorption layer of second roller winding on it, can make water stay longer on the second roller, have more moisture and contact with reinforced bar, avoid moisture to evaporate completely too fast, make the steam layer formed a little more durable, can avoid the direct spray on reinforced bar leads to reinforced bar contact too much water and too fast cooling, can reach the protection epoxy coating that avoids epoxy coating to stick on the second roller, also protect rubber roller. 2. set the inclined plane on the push block, can when pushing the product, utilize the guiding effect of inclined plane, make the product more smoothly along the first roller axial movement and slide into the adjacent recess, make the product that is not in line with let the hole in line with let the hole, can be rolled wheel and send through let the hole and enter heating equipment, make heating equipment not need to wait the product of throwing the shot equipment new throwing the shot, directly from the product that temporarily stores in the first roller of heating equipment and throwing the shot equipment between first frame, greatly reduce the waiting time, improve the efficiency of production. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure schematic diagram of epoxy resin composite frosted coating reinforced bar production line of the utility model.

[0017] Figure 2 It is the installation state schematic drawing of push displacement assembly and alignment assembly of the utility model.

[0018] Figure 3 It is the state schematic drawing of push displacement assembly and push reinforced bar of the utility model.

[0019] Figure 4 It is the state schematic drawing of push displacement assembly and push reinforced bar of the utility model.

[0020] Figure 5 is the state diagram of the alignment assembly in the avoiding position of the utility model.

[0021] Figure 6 is the state diagram of the alignment assembly in the avoiding position of the utility model.

[0022] Figure 7 is the state diagram of the alignment assembly in the avoiding position of the utility model.

[0023] Figure 8 is the structure diagram of the sink, the second rack and the electrostatic spraying equipment of the utility model.

[0024] Figure 9 is the cross-section structure diagram of the second roller of the utility model.

[0025] Figure 10 is the cross-section structure diagram of the electrostatic spraying equipment of the utility model.

[0026] Explanation of reference numerals: 1, heating equipment; 2, shot blasting equipment; 3, roller; 31, first rack; 32, first roller; 3, blocking piece; 331, avoiding hole; 34, second rack; 35, second roller; 351, water absorption layer; 36, groove; 4, jacking displacement assembly; 41, jacking driving piece; 42, jacking piece; 421, lifting plate; 422, jacking block; 423, limiting block; 5, alignment assembly; 51, alignment plate; 52, alignment driving piece; 521, rotating shaft; 522, second telescopic rod; 523, connecting rod; 6, sink; 7, electrostatic spraying equipment; 71, spraying cavity; 72, spray head; 8, spray cooling equipment; 9, feeding device; 10, discharging device. DETAILED DESCRIPTION

[0027] The utility model will be further described below in combination with the drawings and specific embodiments.

[0028] Please refer to Figures 1 to 10The application discloses an epoxy resin composite sanding coating steel bar production line which comprises a feeding device 9, a shot blasting device 2, a heating device 1, an electrostatic spraying device 7, a spraying cooling device 8 and a discharging device 10. A roller bed 3 connecting the shot blasting device 2 and the heating device 1 is provided with a first rack 31 and a plurality of first roller wheels 32. A plurality of grooves 36 are arranged on each first roller wheel 32 in an axial direction. A roller bed 3 connecting the spraying cooling device and the electrostatic spraying device 7 is provided with a second rack 34 and a plurality of second roller wheels. A blocking piece 3 is arranged between the first roller wheel 32 close to the heating device 1 and the heating device 1. The blocking piece 3 is arranged on a moving path of products. The blocking piece 3 is provided with a plurality of accommodation holes 331 corresponding to the number and positions of feeding ports of the heating device 1. The accommodation holes 331 are used for the products to pass through. A push displacement assembly 4 is arranged in the first rack 31 and avoids the first roller wheel 32. The push displacement assembly 4 comprises a push driving piece 41 and a push piece 42. The push driving piece 41 is used for driving the push piece 42 to push the products on the first roller wheel 32 to move a specified distance along the axial direction of the first roller wheel 32, so that the products not aligned with the accommodation holes 331 are moved to positions aligned with the accommodation holes 331. A water tank 6 is arranged on the second rack 34. The water tank 6 is filled with water. A water absorption layer 351 is wound on the second roller wheel 35 above the water tank 6. The water absorption layer 351 can be partially immersed in the water in the water tank 6.By setting the blocking piece 3 and the pushing displacement assembly 4 on the side of the first rack 31 close to the heating device 1, the products after the shot blasting can be temporarily stored and distributed, so that the shot blasting device 2 can process more products at a time, and the temporary storage and distribution are sent into the intermediate frequency heating device 1, the blocking piece 3 is set, and the blocking piece 3 is provided with a let-go hole 331, so that the products not aligned with the let-go hole 331 are blocked, and the products aligned with the let-go hole 331 can pass through the let-go hole 331 and be sent into the heating device 1, so that the blocked products are temporarily stored on the first roller 32, and then the pushing piece 42 is driven by the pushing driving piece 41 of the pushing displacement assembly 4, so that the products not aligned with the let-go hole 331 are aligned with the let-go hole 331, that is, the blocked products can be sent into the heating device 1, avoiding the accumulation and blockage of the products at the inlet end of the heating device 1, effectively solving the problem that the production capacity of the shot blasting device 2 and the feeding capacity of the intermediate frequency heating device 1 are not matched, limiting the shot blasting quantity of the shot blasting device 2, and improving the production efficiency of the entire epoxy coating steel bar production line; The water tank 6 is arranged on the second rack 34 of the roller 3 between the electrostatic spraying device 7 and the spraying cooling device 8, and the water absorbing layer 351 wound on the second roller 35 absorbs water, so that the water stays on the second roller 35 for a longer time, more water contacts the steel bar, avoids the rapid evaporation of water, makes the steam layer more persistent, avoids the direct spraying on the steel bar, and avoids the rapid cooling of the steel bar caused by too much water, which can avoid the adhesion of the epoxy coating on the second roller 35 and protect the rubber roller. The feeding device 9, the shot blasting device 2, the heating device 1, the electrostatic spraying device 7, the spraying cooling device 8 and the discharging device 10 and the roller 3 are not specifically protected, the feeding device 9 and the roller 3 at the inlet end of the shot blasting device 2 are connected to feed, the discharging device 10 and the roller 3 at the outlet end of the spraying cooling device 8 are connected to discharge, and the specific structure of the feeding device 9 and the discharging device 10 is shown in the publication No. CN201543577U.

[0029] Please refer to Figures 1 to 7Preferably, the pushing piece 42 comprises a lifting plate 421 mounted on the pushing driving piece 41, and a plurality of pushing blocks 422 are arranged on the lifting plate 421, each pushing block 422 is opposite to the moving track of the product not aligned with the let-hole 331, and an inclined surface is arranged on each pushing block 422, and the inclined surfaces of the pushing blocks 422 are all directed to the same side and face the moving track of the product aligned with the let-hole 331. The inclined surfaces arranged on the pushing blocks 422 can guide the product to move along the first roller 32 and slide into the adjacent groove 36 when the product is pushed, so that the product not aligned with the let-hole 331 is aligned with the let-hole 331, and the product can be conveyed through the let-hole 331 into the heating equipment 1, so that the heating equipment 1 does not need to wait for the product newly thrown by the shot blasting equipment 2, and directly uses the product temporarily stored on the first roller 32 of the first rack 31 between the heating equipment 1 and the shot blasting equipment 2, which greatly reduces the waiting time and improves the production efficiency.

[0030] Please refer to Figures 1 to 7 Preferably, the pushing driving piece 41 is a first telescopic rod, and the lifting plate 421 is mounted on the extended end of the first telescopic rod; and the pushing displacement assembly 4 is provided in two groups and is arranged at intervals along the moving direction of the product, and the interval of the two groups of pushing displacement assemblies 4 is smaller than the length of the product. The first telescopic rod can be an electric telescopic rod, or a pneumatic cylinder, a hydraulic cylinder, etc., and is not limited thereto. The pushing displacement assembly 4 is provided in two groups and has an interval smaller than the length of the product, so that the pushing effect on the product on the first roller 32 is more uniform, and problems such as poor movement or deviation of the product caused by uneven pushing force or unreasonable pushing position are avoided.

[0031] Please refer to Figures 1 to 7, preferably, a plurality of said push blocks 422 are equidistantly spaced on the upper surface of said lifting plate 421, the spacing width of adjacent two said push blocks 422 is equal to the width of the groove 36, and the spacing between adjacent two said push blocks 422 is opposite to a groove 36; the center distance between adjacent two push blocks 422 is twice the distance between adjacent two grooves 36 on a single first roller 32, and such a size relationship further optimizes the relative position and action relationship between the push block 422 and the groove 36 and the product, and can more accurately control the moving distance and position of the product during the pushing process, ensuring that the product can be accurately moved from one groove 36 to the adjacent groove 36 each time, whether it is aligned with the relief hole 331 or orderly stored in the buffer feeding device, which can provide more reliable protection and improve the accuracy and production efficiency of the device operation.

[0032] Please refer to Figures 1 to 7 , preferably, the center distance between adjacent two push blocks 422 is twice the distance between adjacent two grooves 36 on a single said first roller 32; the number of said grooves 36 on a single said first roller 32 is twice the number of said relief holes 331 or more, and the number of said push blocks 422 is the number of grooves 36 minus the number of relief holes 331; such a number of configuration provides sufficient space and flexibility for the temporary storage and distribution of products in the buffer feeding device; more grooves 36 can temporarily store more products to meet the production capacity demand of the shot blasting equipment 2 for processing more products at a time, and at the same time, through the cooperation of a reasonable number of push blocks 422, the temporarily stored products can be efficiently distributed one by one, and through multiple movements, the products can be moved to the groove 36 opposite to the relief hole 331, so that they can orderly enter the heating equipment 1, fully tapping the potential of the buffer feeding device and further improving the overall production capacity of the production line and the collaborative operation efficiency between devices. At the same time, the product on the first roller 32 can be moved a distance of one adjacent groove 36 interval each time it is pushed, ensuring that no matter how many grooves 36 there are and how many grooves 36 the relief hole 331 is spaced, the push driving member 41 pushes multiple times until the product is finally pushed to the groove 36 opposite to the relief hole 331. Preferably, in the present embodiment, the number of grooves 36 is twice the number of relief holes 331.

[0033] Please refer to Figures 1 to 7, preferably, each of the accommodation holes 331 is opposite to one of the grooves 36, and a number of grooves 36 corresponding to the multiple is arranged between two grooves 36 opposite to two adjacent accommodation holes 331. The arrangement and conveying of the products in the buffer feeding device are more regular and orderly, and the products about to enter the heating equipment 1 and the products still needing temporary storage can be clearly distinguished during the temporary storage and distribution of the products. If the number of grooves 36 is three times the number of accommodation holes 331, the push driving member 41 needs to push twice, so that the products are divided into three batches and sent into the heating equipment 1. In the embodiment, 10 accommodation holes 331 and 20 grooves 36 are adopted, that is, the shot blasting equipment 2 processes 20 steel bars at a time, and the heating equipment 1 heats one steel bar at a time. Of course, it can also be 20 accommodation holes 331 and 40 grooves 36, or 11 accommodation holes 331 and 22 grooves 36, or 21 accommodation holes 331 and 42 grooves 36, and the like

[0034] Please refer to Figures 1 to 7 , preferably, an alignment assembly 5 is further arranged between the blocking member 3 and the heating equipment 1, the alignment assembly 5 comprises an alignment plate 51 and an alignment driving member 52, the alignment plate 51 is connected with the alignment driving member 52, and the alignment driving member 52 is used to drive the alignment plate to move to block or avoid the inlet end of the heating equipment 1. The alignment assembly 5 comprising the alignment plate 51 and the alignment driving member 52 can further align the products before the products are conveyed from the blocking member 3 to the heating equipment 1, so that the products in the same batch can be synchronously sent into the heating holes of the heating equipment 1, and the stability of the heating coil current of the heating equipment 1 is ensured. All the coils are commonly powered, and the early or late entry of the steel bars will cause the fluctuation of the coil current, and then affect the heating precision. The alignment plate can make the steel bars enter synchronously, so as to avoid the fluctuation of the current.

[0035] Please refer to Figures 1 to 7 , preferably, the alignment driving member 52 comprises a rotating shaft 521 and a second telescopic rod 522, the rotating shaft 521 is rotatably installed on the first rack 31 of the roller way 3 which is in abutment with the inlet end of the heating equipment 1, the alignment plate 51 is fixed to the outer circumferential surface of the rotating shaft 521, the alignment plate 51 is provided with a connecting rod 523 on the side facing the heating equipment 1 when the alignment plate 51 is in the alignment blocking state, and the connecting rod 523 is movably connected with the second telescopic rod 522, so as to drive the rotating shaft 521 to rotate and then drive the alignment plate 51 to move to the blocking position and the avoiding position. Preferably, the second telescopic rod 522 is a pneumatic cylinder, an electric telescopic cylinder or a hydraulic cylinder, and the like, and is not limited thereto. The rotating shaft 521 can also be directly driven by a motor.

[0036] Please refer to Figures 1 to 7, preferably, the first frame 31 of the heating device 1 is provided with bearing seats on both sides in the product running direction, and the two ends of the rotating shaft 521 are connected with the corresponding bearing seats through bearings; the friction resistance of the rotating shaft 521 can be reduced, and the rotating flexibility and service life of the rotating shaft 521 are improved. The axis of the rotating shaft 521 is at the same height as the axis of the second roller 35; the diameter of the rotating shaft 521 is less than or equal to the minimum diameter of the groove 36 of the second roller 35; the axis of the rotating shaft 521 is at the same height as the axis of the second roller 35, and the diameter of the rotating shaft 521 is less than or equal to the minimum diameter of the groove 36 of the second roller 35, so that the rotating shaft 521 avoids blocking the moving path of the reinforcing steel bar in the giving way state. The cylinder of the second telescopic rod 522 is hinged to the ground, and the elongated end of the second telescopic rod 522 is hinged to the connecting rod 523.

[0037] Please refer to Figure 1 , Figures 8 to 10 , preferably, the water surface in the water tank 6 is higher than the bottom end of the circumferential surface on which the second roller 35 is installed; and the water absorption layer 351 is cloth or sponge. The water surface in the water tank 6 is higher than the bottom end of the circumferential surface of the second roller 35, which has the beneficial effect that the water absorption layer 351 can be fully immersed in water, ensuring that the water absorption layer 351 can absorb water and cool the second roller 35. In actual application, the cloth can be selected from cloth of different materials and weaving methods, such as cotton cloth, non-woven fabric, etc.; and the sponge can be selected from high-density and low-porosity sponges to avoid absorbing too much water, so as to adapt to different use scenarios and water absorption requirements.

[0038] Please refer to Figure 1 , Figures 8 to 10 , preferably, the electrostatic spraying device 7 is provided with a spraying cavity 71, and a row of spray heads 72 are symmetrically arranged on the upper part and the bottom part of the spraying cavity 71, and the product passes between the spray heads 72 on the upper part and the bottom part. The upper part and the bottom part of the spraying cavity 71 of the electrostatic spraying device 7 are respectively provided with a row of spray heads 72, and the spray heads 72 are symmetrically arranged, which can simultaneously spray the upper and lower sides of the reinforcing steel bar, so that the reinforcing steel bar is uniformly covered with epoxy resin powder during spraying, improving the uniformity and quality of the coating, and reducing the rework and defective rate caused by uneven spraying. The electrostatic spraying device 7 of the utility model has two rows of spray heads 72 which are symmetrically arranged above and below, and the remaining structures and the principles of realizing spraying are the same as those of the existing electrostatic spraying device 7, which will not be described in detail.

[0039] Please refer to Figure 1 , Figures 8 to 10 , preferably, the circumferential direction of the groove 36 on the roller can form an included angle of 5-18° with the running direction of the product, so that the reinforcing steel bar rotates during conveying, and the product rotates during spraying, making the spraying more uniform.

[0040] The utility model has the following working principle:

[0041] The steel bar to be processed is fed to the feeding device 9 and is conveyed to the shot blasting equipment 2 through the roller way 3 for surface treatment, and then the shot blasting equipment 2 conveys the epoxy-coated steel bar after shot blasting to the first rack 31 of the buffer feeding device, and the steel bar moves forward along with the rotation of the first roller 32. When the steel bar moves to the side close to the heating equipment 1, the blocking piece 3 blocks the steel bar from continuing to move forward, at this time, part of the steel bar will be aligned with the accommodation hole 331 on the blocking piece 3, and part of the steel bar that is not aligned will be blocked, the steel bar aligned with the accommodation hole 331 will be conveyed through the accommodation hole 331 by the first roller 32 and abut against the alignment plate, after all the steel bars conveyed through the accommodation hole 331 abut against the alignment plate, the second telescopic rod 522 is retracted, drives the alignment plate to rotate downward around the rotation shaft 521 center to accommodate, and the steel bar conveyed through the accommodation hole 331 is continuously conveyed by the first roller 32 and moves into the heating equipment 1 for heating;

[0042] After the steel bar conveyed through the accommodation hole 331 completely enters the heating equipment 1, the first roller 32 on the first rack 31 stops rotating, the push driving piece 41 drives the push piece 42 to rise, the push block 422 contacts the steel bar that is not aligned with the accommodation hole 331, the steel bar slides along the inclined surface on the push block 422 until the steel bar slides into the groove 36 aligned with the accommodation hole 331. When the steel bar is aligned with the accommodation hole 331, the first roller 32 continues to rotate and drives the steel bar aligned with the accommodation hole 331 to move to the heating equipment 1, and the alignment assembly 5 can align and adjust the steel bar again before the steel bar enters the heating equipment 1, so that the steel bar can enter the heating equipment 1 synchronously; when all the steel bars enter the heating equipment 1, the steel bar after new shot blasting by the shot blasting equipment 2 is conveyed on the first roller 32 of the first rack 31 for conveying and is connected to the next feeding.

[0043] The heated steel bars are conveyed to the electrostatic spraying device 7 through the roller 3, enter the spraying cavity 71 of the electrostatic spraying device 7 (the electrostatic spraying device 7 has two electrostatic spraying machines arranged in sequence, and the steel bars are sprayed twice in sequence, first with smooth powder and then with matte powder), and the upper and bottom symmetrical nozzles 72 in the spraying cavity 71 spray the epoxy resin powder to the steel bars, so that the surface of the steel bars is uniformly covered with a coating. After the spraying is completed, the steel bars continue to be conveyed to the area provided with the water tank 6 through the roller 3. Since the water surface in the water tank 6 is higher than the bottom end of the peripheral surface of the second roller 35, the water absorption layer 351 wound on the second roller 35 is partially immersed in water, and the water absorption layer 351 absorbs water. When the steel bars pass through the area, the water on the water absorption layer 351 contacts the steel bars, and a water vapor layer is generated, which effectively prevents the water absorption material from contacting the coating on the surface of the steel bars, avoids rapid cooling of the steel bars, and effectively prevents the epoxy coating from adhering to the second roller 35. Then, the steel bars continue to be conveyed to the spraying cooling device 8 through the roller 3 for further cooling, and the spraying and processing of the steel bars with the matte coating are completed. Then, the steel bars are conveyed to the discharging device 10 through the roller 3 for discharging.

[0044] It should be noted that, in the description of the present application, unless otherwise specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection. "Up", "down", "left", "right" and the like are only used to represent relative positional relationship, and when the absolute position of the described object changes, the relative positional relationship may change.

[0045] Secondly, the utility model discloses the embodiment in the drawing, only relate to the structure of the embodiment of the present disclosure, other structures can refer to the usual design, under the condition of no conflict, the same embodiment and different embodiments of the utility model can be combined with each other.

[0046] Finally, the above-mentioned is only the preferred embodiment of the utility model, the protection scope of the utility model is not only limited to the above-mentioned embodiment, and all the technical solutions under the idea of the utility model belong to the protection scope of the utility model.

[0047] It should be noted that, for ordinary skilled persons in the art, some improvements and decorations without departing from the principle of the utility model can also be considered as the protection scope of the utility model.

Claims

1. An epoxy resin composite frosted coating steel bar production line, comprising a feeding device, shot blasting equipment, heating equipment, electrostatic spraying equipment, spray cooling equipment, and unloading device; the roller conveyor connecting the shot blasting equipment and the heating equipment has a first frame and a plurality of first rollers, each first roller having a plurality of grooves spaced axially; the roller conveyor connecting the spray cooling equipment and the electrostatic spraying equipment has a second frame and a plurality of second rollers, characterized in that: A blocking member is provided between the first roller on the side of the first frame near the heating device and the heating device. The blocking member is located on the product's movement path and has clearance holes corresponding to the number and position of the feeding ports of the heating device, through which the product passes. A push-displacement assembly is installed in the first frame away from the first roller. The push-displacement assembly includes a push-drive member and a push member. The push-drive member is used to drive the push member to push the product on the first roller to move a specified distance along the axial direction of the first roller, so that the product that is not aligned with the clearance hole is moved to the position aligned with the clearance hole. A water tank is provided on the second frame and filled with water. A water-absorbing layer is wound on the second roller located above the water tank on the second frame. The water-absorbing layer can be partially immersed in the water in the water tank.

2. The epoxy resin composite frosted coating steel bar production line according to claim 1, characterized in that: The pushing component includes a lifting plate, which is mounted on the pushing drive component. The lifting plate is provided with a plurality of pushing blocks, each of which is opposite to the movement trajectory of the product that is not aligned with the clearance hole. Each pushing block is provided with an inclined surface, and the inclined surface of each pushing block faces the same direction, each facing the movement trajectory of the product aligned with the clearance hole on the same side of its adjacent side.

3. The epoxy resin composite frosted coating steel bar production line according to claim 2, characterized in that: The jacking drive component is a first telescopic rod, and the lifting plate is installed at the extended end of the first telescopic rod; the jacking displacement assembly is provided in two sets, which are spaced apart along the moving direction of the product, and the distance between the two sets of the jacking displacement assembly is less than the length of the product.

4. The epoxy resin composite frosted coating steel bar production line according to claim 2, characterized in that: Multiple push blocks are equidistantly spaced on the upper surface of the lifting plate. The spacing between two adjacent push blocks is equal to the width of the groove, and the gap between two adjacent push blocks is directly opposite a groove. At one end of the lifting plate perpendicular to the product's travel direction and facing the inclined surface of the push block, a limiting block is provided. The limiting block avoids the product's travel trajectory.

5. The epoxy resin composite frosted coating steel bar production line according to claim 4, characterized in that: The center distance between two adjacent push blocks is twice the spacing between two adjacent grooves on a single first roller; the number of grooves on a single first roller is twice or more the number of clearance holes, and the number of push blocks is the number of grooves minus the number of clearance holes; each clearance hole is opposite to one groove, and a number of grooves corresponding to the multiple are provided between the two grooves opposite two adjacent clearance holes.

6. The epoxy resin composite frosted coating steel bar production line according to claim 1, characterized in that: An alignment assembly is also provided between the blocking member and the heating device. The alignment assembly includes an alignment plate and an alignment drive member. The alignment plate is connected to the alignment drive member, and the alignment drive member is used to drive the alignment plate to move and block or avoid the inlet end of the heating device.

7. The epoxy resin composite frosted coating steel bar production line according to claim 6, characterized in that: The alignment drive includes a rotating shaft and a second telescopic rod. The rotating shaft is rotatably mounted on the first frame of the roller conveyor that is connected to the inlet end of the heating equipment. The alignment plate is fixed to the outer circumferential surface of the rotating shaft. When the alignment plate is in the alignment blocking state, a connecting rod is provided on the side facing the heating equipment. The connecting rod is movably connected to the second telescopic rod to drive the rotating shaft to rotate and thus move the alignment plate to the blocking position and the avoidance position.

8. The epoxy resin composite frosted coating steel bar production line according to claim 7, characterized in that: The heating equipment has bearing seats on both sides of the first frame connected to the inlet end, located in the product travel direction. The two ends of the rotating shaft are respectively connected to the corresponding bearing seats through a bearing. The axis of the rotating shaft is at the same height as the axis of the second roller. The diameter of the rotating shaft is less than or equal to the minimum diameter of the groove of the second roller. The cylinder of the second telescopic rod is hinged to the ground, and the extended end of the second telescopic rod is hinged to the connecting rod.

9. The epoxy resin composite frosted coating steel bar production line according to claim 1, characterized in that: The water level in the tank is higher than the bottom of the circumference on which the second roller is mounted; the absorbent layer is fabric or sponge.

10. The epoxy resin composite frosted coating steel bar production line according to claim 1, characterized in that: The electrostatic spraying equipment is provided with a spraying chamber, and a row of spray nozzles is symmetrically arranged at the top and bottom of the spraying chamber. The product passes through the spray nozzles at the top and bottom.

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