Multi-layer curing oven based on hanging type full-chain forward conveying and spraying production line

Abstract

The multilayer curing oven and spraying production line based on hanging type full-chain forward conveying comprises a machine frame and a conveying chain set which is arranged in an up-down winding mode, the conveying chain set comprises a first conveying chain and a second conveying chain which are symmetrically arranged, and the first conveying chain and the second conveying chain are installed on the machine frame through chain wheels of the first conveying chain and the second conveying chain respectively. A plurality of hanging baskets used for containing workpieces in the forward direction are connected between the first conveying chain and the second conveying chain in a hung mode, and the hanging baskets are kept in forward hanging connection under the action of the gravity of the hanging baskets so that forward conveying of the workpieces can be achieved. According to the multi-layer curing oven, workpieces can be conveyed on the circumference of the conveying chains in a forward placement mode in the mode that the hanging baskets are connected between the two conveying chains in a hanging mode, namely, the whole chains are conveyed in the forward direction, and therefore the hanging baskets can be connected on the whole circumference of the conveying chain set in a hanging mode, and the conveying chain set is fully utilized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the curing technical field in spraying process, specifically is a multilayer curing furnace and spraying production line based on the full chain positive direction conveying of the hanging type. BACKGROUND

[0002] Curing is a very important process link for spraying process, and its main purpose is to heat the powder coating or paint uniformly sprayed on the workpiece surface to a specified temperature and keep it for a corresponding time, so that it is melted, leveled and cured, so that the desired workpiece surface effect is obtained.

[0003] Currently, in the field of spraying process, the curing of powder coating or paint on the workpiece surface is mainly carried out in a curing furnace. Taking the spraying process of a vacuum cup as an example, the curing furnace is mainly a straight-through flat furnace or a bridge-type furnace with a slope at the inlet and outlet.

[0004] Reference Figure 1 This type of curing furnace has a running structure of installing a conveying belt 200 along the length direction of the furnace body 100 in the furnace body 100, and the two ends of the conveying belt 200 respectively extend out of the furnace body 100. When operating, the worker places the vacuum cup 300 to be cured in a positive direction (the cup body bottom is down and the top is up) on the belt body 201 at one end of the conveying belt 200, and then the conveying belt 200 drives the vacuum cup 300 to pass through the furnace body 100 in a positive direction (the cup body bottom is down and the top is up) on the belt body 201 at the same position, completes the curing, and performs the next operation on the belt body 201 at the same position at the other end of the conveying belt 200.

[0005] The above running mode has the advantages of simple structure and convenient installation, but the disadvantages are also obvious. Since the vacuum cup needs to be placed in a positive direction for positive conveying, only the belt body 201 at the position in the above running mode of the conveying belt 200 is utilized, and the conveying belt 200 cannot be used for positive placement of the vacuum cup 300 on the entire circumference to realize full-belt positive conveying of the vacuum cup 300, thereby the overall utilization rate of the conveying belt 200 is not high, and further leads to low overall productivity of the curing furnace.

[0006] If you want to improve the productivity of the curing furnace per unit time, you need to try to lengthen the length of the conveying belt 200 to place enough vacuum cups 300 in a positive direction, which will increase the length of the furnace body 100, not only increasing the energy consumption of the curing furnace, but also increasing the floor area of the curing furnace, especially the floor area in the length direction. For some compact factory buildings, it is particularly necessary for technical personnel in the field to develop and construct a new structure of curing furnace to solve the above technical problems. UTILITY MODEL CONTENTS

[0007] In order to solve the problem of low overall utilization rate of the existing conveying belt, which leads to low production capacity, high energy consumption and large floor area of the existing curing furnace, the utility model provides a multi-layer curing furnace based on the full-chain positive conveying of the hanging type and a spraying production line with a new structure.

[0008] As a first aspect, the utility model provides a multi-layer curing furnace based on the full-chain positive conveying of the hanging type, including frame, the conveying chain group of up and down winding, the conveying chain group includes the first conveying chain and the second conveying chain of symmetry and sets up, the first conveying chain and the second conveying chain are installed in frame through respective sprocket, the first conveying chain and the second conveying chain are hung with a plurality of for the positive placement workpiece's hanging basket, the hanging basket can keep the positive hanging under the gravity of itself to realize the positive conveying of workpiece.

[0009] Preferably, the hanging basket is provided with hooks on both sides of one end, and the chain of the first conveying chain and the second conveying chain is provided with a hanging shaft, and the hanging basket is hung on the hanging shaft through the hooks, and the hung hanging basket can keep the positive hanging under the gravity of itself to realize the positive conveying of workpiece.

[0010] Preferably, the hanging baskets are uniformly distributed on the conveying chain group.

[0011] Preferably, the hook comprises a hook body and a connecting plate, the hook body is configured with a hanging hole for hanging on the hanging shaft, the hanging hole is formed with a set of entrances at the side, and the connecting plate is arranged at the set of entrances and detachably connected to the hook body through the end portion.

[0012] Preferably, the hanging shaft has a limiting end portion, and the outer diameter of the limiting end portion is larger than the hole diameter of the hanging hole, thereby preventing the hooked hook from exiting the hanging shaft.

[0013] Preferably, the frame is provided with a first guide rail, the first guide rail is correspondingly arranged with the horizontal segment of the chain, and the roller of the chain is in contact with the first guide rail and runs along the first guide rail.

[0014] Preferably, the hanging shaft is provided with a rolling body, the frame is provided with a second guide rail, the second guide rail is correspondingly arranged with the horizontal segment of the chain, and the rolling body is in contact with the second guide rail and runs along the second guide rail.

[0015] In one embodiment, the multi-layer curing furnace comprises an upper part area, a lower part area, and an upper and lower drying chamber and an empty area, one end of the empty area extends from below the bottom of the drying chamber to correspond to the arrangement of the upper part area, and the other end of the empty area also extends from below the bottom of the drying chamber to correspond to the arrangement of the lower part area.

[0016] Preferably, the lower part area forms a strong cooling area or a natural cooling area.

[0017] Preferably, the lower piece area and the other end of the empty area jointly form a strong cooling area or a natural cooling area.

[0018] Preferably, the strong cooling area adopts strong wind cooling.

[0019] Preferably, the conveying chain group is configured to have an empty chain segment in the empty area, an upper piece chain segment in the upper piece area, a lower piece chain segment in the lower piece area, and a drying chain segment in the drying chamber and arranged in an up-down manner, the empty chain segment and the upper piece chain segment are connected through a first outer end chain segment, the uppermost chain segment in the drying chain segment and the upper piece chain segment are connected through a climbing chain segment, adjacent upper and lower chain segments in the drying chain segment are connected through an inner end chain segment, and the lowermost chain segment in the drying chain segment forms the lower piece chain segment from the part of the drying chamber, and the lower piece chain segment and the empty chain segment are connected through a second outer end chain segment.

[0020] Preferably, the first outer end chain segment is provided with two small sprockets arranged in an up-down manner, and the two small sprockets are located on the inner side of the first outer end chain segment; the climbing chain segment is provided with two small sprockets arranged in an up-down manner, and the two small sprockets are located on both sides of the climbing chain segment; each inner end chain segment is provided with a large sprocket located on the inner side of the inner end chain segment; and the second outer end chain segment is provided with two small sprockets arranged in an up-down manner, and the two small sprockets are located on the inner side of the second outer end chain segment.

[0021] In another embodiment, the multi-layer curing furnace comprises a upper piece area and a lower piece area arranged on the same side and in sequence, and a drying chamber and a cooling area arranged in an up-down manner, and one end of the cooling area extends from below the bottom of the drying chamber to correspond to the arrangement of the lower piece area and the upper piece area.

[0022] Preferably, the cooling area forms a strong cooling area or a natural cooling area.

[0023] Preferably, the strong cooling area adopts strong wind cooling.

[0024] Preferably, the conveying chain group is configured to have a cooling chain segment in the cooling area, a general chain segment in the lower piece area and the upper piece area, and a drying chain segment in the drying chamber and arranged in an up-down manner, the cooling chain segment and the general chain segment are connected through an outer end chain segment, the uppermost chain segment in the drying chain segment and the general chain segment are connected through a climbing chain segment, adjacent upper and lower chain segments in the drying chain segment are connected through a first inner end chain segment, and the lowermost chain segment in the drying chain segment and the cooling chain segment are connected through a second inner end chain segment.

[0025] Preferably, the outer end chain segment is equipped with two small sprockets arranged in upper and lower positions, which are located on the inner side of the outer end chain segment; the climbing chain segment is equipped with two small sprockets arranged in upper and lower positions, which are located on the two sides of the climbing chain segment; each first inner end chain segment is equipped with one large sprocket, which is located on the inner side of the first inner end chain segment; the second inner end chain segment is equipped with two small sprockets arranged in upper and lower positions, which are located on the inner side of the second inner end chain segment.

[0026] In yet another embodiment, the multi-layer curing furnace comprises a drying chamber, a cooling zone, and an upper piece zone and a lower piece zone arranged on the same side and in sequence, and the cooling zone is located on one side of the drying chamber and corresponds to the upper piece zone and the lower piece zone below.

[0027] Preferably, the conveying chain is configured to have a cooling chain segment symmetrically located in the cooling zone, a general chain segment symmetrically located in the lower piece zone and the upper piece zone, and a drying chain segment symmetrically located in the drying chamber and arranged in upper and lower positions, the cooling chain segment and the general chain segment are connected through the outer end chain segment, the uppermost chain segment in the drying chain segment and the general chain segment are connected through the climbing chain segment, adjacent upper and lower chain segments in the drying chain segment are connected through the first inner end chain segment, and the lowermost chain segment in the drying chain segment extends from one side of the drying chamber to form the cooling chain segment.

[0028] Preferably, the horizontal segment comprises a cooling chain segment, a general chain segment, and a drying chain segment; the end segment comprises an outer end chain segment and a first inner end chain segment; and the climbing segment comprises a climbing chain segment.

[0029] Preferably, the outer end chain segment is equipped with two small sprockets arranged in upper and lower positions, which are located on the inner side of the outer end chain segment; the climbing chain segment is equipped with two small sprockets arranged in upper and lower positions, which are located on the two sides of the climbing chain segment; the lowermost first inner end chain segment is equipped with two small sprockets arranged in upper and lower positions, which are located on the inner side of the first inner end chain segment; and each remaining first inner end chain segment is equipped with one large sprocket, which is located on the inner side of the corresponding first inner end chain segment.

[0030] Preferably, the drying chamber has a drying zone and air inlet zones located on both sides of the drying zone, the top of the air inlet zone is provided with an air inlet, the top of the drying zone is provided with an air outlet, and a ventilation plate is arranged between the air inlet zone and the drying zone, a plurality of ventilation holes are formed in the ventilation plate, so that external hot air flows into the air inlet zone through the air inlet, then flows into the drying zone through the ventilation holes in the ventilation plate, and finally flows out from the air outlet.

[0031] Preferably, a partition is arranged between the drying chamber and the cooling zone to form a cold-hot separation, thereby improving energy efficiency.

[0032] Preferably, a partition is arranged between the drying chamber and the empty zone to prevent heat diffusion, thereby improving energy efficiency.

[0033] As a second aspect, the utility model provides a spraying production line, including above based on the multi -layer curing oven of hanging type full chain positive direction conveying.

[0034] The multi -layer curing oven based on the hanging type full chain positive direction conveying of the utility model is adopted in the two symmetrical conveyors between the hanging basket of a plurality of, and make the hanging basket can keep positive direction under the action of gravity, the hanging basket can realize the positive placement of workpiece on the circumference of the conveyor group, so that the whole circumference of the conveyor group can be provided with the hanging basket, so that the whole circumference of the conveyor group can be fully utilized, and the positive placement of workpiece can be kept all the time, so that the full chain positive direction conveying of workpiece is realized.

[0035] Visible this type of multi -layer curing oven based on the hanging type full chain positive direction conveying can fully utilize the conveyor group, and can realize the characteristics that the hanging basket can keep the positive placement of workpiece on the whole circumference of the conveyor group, so that the conveyor group can be designed to the structure of the upper and lower multi -layer winding, so that the workpiece is continuously dried in the conveying process of the upper and lower multi -layer winding conveyor group, compared with the curing oven in the prior art, the energy consumption is significantly reduced, the production capacity is significantly increased, and the length of the curing oven can be obviously and effectively reduced, so that the vertical space of the curing oven is fully utilized, the floor area is reduced, especially the floor area in the length direction is effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 It is the partial simplified schematic view of prior art curing oven;

[0037] Figure 2 It is the partial simplified schematic view of the multi -layer curing oven in the embodiment one of the utility model;

[0038] Figure 3 It is the partial simplified schematic view of the conveyor group of the multi -layer curing oven in the embodiment one of the utility model;

[0039] Figure 4 It is the partial simplified schematic view of the conveyor group of the multi -layer curing oven in the embodiment one of the utility model after hanging basket;

[0040] Figure 5 It is the partial simplified schematic view of the conveyor group of the multi -layer curing oven in the embodiment one of the utility model through the chain wheel and is installed in the frame (has hung the basket);

[0041] Figure 6 It is the partial simplified schematic view of the hanging basket of the multi -layer curing oven in the embodiment one of the utility model through the hook and is hung on the hanging shaft of the outer end chain segment;

[0042] Figure 7For the partial stereoscopic simplified schematic diagram of the hanging basket in the embodiment one of the utility model hanging on the hook of the hanging shaft;

[0043] Figure 8 For the partial stereoscopic simplified schematic diagram of the running of the roller on the first guide rail piece and the running of the rolling body on the second guide rail piece (for clearly showing the running state, part of the chain plate on the chain and the roller have been removed) in the embodiment one of the utility model;

[0044] Figure 9 For Figure 5 The enlarged schematic view of A in the above-mentioned (mainly showing the running state of the roller on the first guide rail piece and the running state of the rolling body on the second guide rail piece);

[0045] Figure 10 For the partial stereoscopic simplified schematic diagram of the position of the drying chamber in the embodiment one and the embodiment two of the utility model (for clearly showing the structure of the drying chamber, part of the structure and the component have been removed).

[0046] Figure 11 For the partial simplified schematic diagram of the multi-layer curing furnace in the embodiment two of the utility model;

[0047] Figure 12 For the partial simplified schematic diagram of the conveying chain group of the multi-layer curing furnace in the embodiment two of the utility model being equipped on the rack through the chain wheel (the hanging basket has been hung);

[0048] Figure 13 For the simplified schematic diagram of the multi-layer curing furnace in the embodiment one of the utility model being used for the spraying production line.

[0049] Figure 14 For the simplified schematic diagram of the multi-layer curing furnace in the embodiment two of the utility model being used for the spraying production line.

[0050] Figure 15 For the partial simplified schematic diagram of the conveying chain group of the multi-layer curing furnace in other embodiments being equipped on the rack through the chain wheel (the hanging basket has been hung).

[0051] 1. frame; 2. conveying chain group; 3. first conveying chain; 4. second conveying chain; 5. workpiece; 6. hanging basket; 7. hanging shaft; 7-1. limiting end; 7-2. hooked segment; 7-3. rolling body; 8. hook; 8-1. hook body; 8-2. connecting plate; 8-3. hooking hole; 8-4. sleeve inlet; 9. first guide rail piece; 10. roller; 11. second guide rail piece; 12. upper piece area; 13. lower piece area; 14. drying chamber; 14-1. drying area; 14-2. air inlet area; 14-3. air inlet; 14-4. air outlet; 14-5. ventilation plate; 14-6. ventilation hole; 15. empty area; 16. empty chain segment; 17. upper piece chain segment; 18. lower piece chain segment; 19. drying chain segment; 20. first outer end chain segment; 21. climbing chain segment; 22. inner end chain segment; 23. second outer end chain segment; 24. partition plate; 25. cooling area; 26. cooling chain segment; 27. general chain segment; 28. outer end chain segment; 29. first inner end chain segment; 30. second inner end chain segment;

[0052] 100. furnace body; 200. conveying belt; 201. belt body on the upper position; 300. vacuum cup; 400. multi-layer curing furnace; 500. sprocket; 501. small sprocket; 502. large sprocket. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments described below are within the scope of the present application.

[0054] The terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually a category, and are not limited to the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in an "or" relationship.

[0055] The utility model discloses a kind of multi-layer curing furnace based on full-chain positive direction conveying of hanging type, after object is hung on the hanging shaft of another mobile carrier, when relative rotation occurs between hanging shaft and object, the object can keep the characteristics of positive direction hanging under the action of dead weight, to conceive the multi-layer curing furnace based on full-chain positive direction conveying of hanging type of this embodiment.In structural design, multi-layer curing furnace is provided with two symmetrical conveying chains, and several hanging baskets are evenly positively hung between the two conveying chains through hanging shaft, the hanging basket after positive direction hanging can keep positive direction hanging state under the action of gravity in the conveying process of conveying chain, whether it is at the horizontal section of conveying chain, or at the end of conveying chain or climbing, that is, positive direction hanging can be kept on the entire circumference of conveying chain, when workpiece placed in the hanging basket of positive direction hanging can keep positive direction placement, to realize the full-chain positive direction conveying of workpiece.Based on being able to guarantee the positive direction conveying of workpiece, the entire conveying chain can be fully utilized, plus being wound up and down on structure to form upper and lower multi-layer structure, so workpiece can be continuously cured on the conveying chain of upper and lower multi-layer structure, to make energy consumption significantly reduced, production capacity significantly increased, and the length of entire multi-layer curing furnace can be effectively shortened, to fully utilize the vertical space of multi-layer curing furnace, reduce the floor area of multi-layer curing furnace, especially the floor area in length direction.

[0056] It should be noted that the positive direction hanging refers to the hanging state that hanging basket can keep workpiece placed in positive direction placement to realize positive direction conveying, which can also be understood as the placement surface of hanging basket always keeps horizontal state in this embodiment.

[0057] Example One

[0058] Reference is made to the accompanying drawings Figures 2-10 A kind of multi-layer curing furnace based on full-chain positive direction conveying of hanging type is provided, which includes rack 1, conveying chain group 2 wound up and down, the conveying chain group 2 includes symmetrically arranged first conveying chain 3 and second conveying chain 4, and the first conveying chain 3 and second conveying chain 4 are respectively installed on rack 1 by respective chain wheel 500.Several hanging baskets 6 for positively placing workpiece 5 are arranged between the first conveying chain 3 and second conveying chain 4, one side of the hanging basket 6 is hung on the chain (to avoid repeated marking, therefore, no mark is made here) of position corresponding first conveying chain 3, the other side of the hanging basket 6 is hung on the chain (to avoid repeated marking, therefore, no mark is made here) of position corresponding second conveying chain 4, the hanging basket 6 is arranged in a circle along the circumference of conveying chain group 2, and the hanging basket 6 keeps positive direction hanging under the action of its own gravity to realize the positive direction placement of workpiece 5.Workpiece 5 in this embodiment can be Figure 1The thermos cup 300 is included. In order to make full use of the conveyor chain group 2, the basket 6 is evenly spaced and hooked on the circumference of the conveyor chain group 2, so that the conveyor chain group 2, that is, the first conveyor chain 3 and the second conveyor chain 4, can be evenly spaced and hooked on the basket 6 on the entire circumference.

[0059] For the aforementioned hooking, various implementation methods are allowed. In this embodiment, the following structural configuration is mainly adopted. Specifically, the chain is equipped with a hanging shaft 7, that is, a hanging shaft 7 is inserted into the roller 10 of the first conveyor chain 3 and the roller 10 of the second conveyor chain 4, and the basket 6 is provided with hooks 8 on both sides. In this embodiment, the hook 8 includes a hook body 8-1 and a connecting plate 8-2. The hook body 8-1 is configured with a hooking hole 8-3 for hooking onto the hanging shaft 7. The hooking hole 8-3 forms an inlet 8-4 on the side, and the connecting plate 8-2 spans across the inlet 8-4. The two ends of the connecting plate 8-2 are also connected to the hook body 8-1 by screws or similar fasteners. Since the connection is made by fasteners, the connecting plate 8-2 can be disassembled.

[0060] In this embodiment, the hanging shaft 7 is also optimized. The hanging shaft 7 has a limiting end 7-1 and a hooked section 7-2. The outer diameter of the limiting end 7-1 is larger than the diameter of the hooking hole 8-3, thereby preventing the hook 8 from retracting from the hanging shaft 7. When it is necessary to hook the basket 6, the fasteners are loosened, the connecting plate 8-2 is removed, and the sleeve inlet 8-4 is opened. At this time, the sleeve inlet 8-4 is moved towards the hanging shaft 7, so that the hooked section 7-2 of the hanging shaft 7 passes through the sleeve inlet 8-4 and enters the hooking hole 8-3, thereby achieving hooking at one end of the basket 6. It should be noted that the diameter of the hooking hole 8-3 needs to be slightly larger than the outer diameter of the hooked section 7-2. This ensures that, under the protection of the weight of the basket 6, the hanging shaft 7 can rotate relative to the hook 8 without interference as the chain runs, thus allowing the basket 6 to maintain a positive hooking state. Secondly, in this embodiment, since the hanging hole 8-3 is configured as a combination of a semi-circular hole and a rectangular hole at the hanging point, the diameter of the hanging hole 8-3 can be understood as the diameter of the semi-circular hole.

[0061] In this embodiment, to ensure the smooth and stable operation of the conveyor chains, namely the first conveyor chain 3 and the second conveyor chain 4, along a preset trajectory, and to ensure the stable placement and transport of the workpiece 5 by the suspended basket 6, a first guide rail 9 is installed on the frame 1. The first guide rail 9 is correspondingly arranged with the horizontal section of the chain, and the rollers 10 of the chain contact the first guide rail 9 with their bottoms and run along the first guide rail 9. It should be noted that in this embodiment, since the chains on the first conveyor chain 3 and the chains on the second conveyor chain 4 are both referred to as chains, the first guide rail 9 is symmetrically arranged, with the first guide rail 9 corresponding to the horizontal sections of both the first conveyor chain 3 and the second conveyor chain 4. Furthermore, the bottom contact can be understood as the chain rollers 10 pressing against the bearing surface of the first guide rail 9 with their bottoms, thereby enabling the first guide rail 9 to support and guide the rollers 10.

[0062] In this embodiment, as a further optimization and improvement, the rotating shaft 7 is also provided with a rolling element 7-3, and the frame 1 is equipped with a second guide rail 11. The second guide rail 11 is correspondingly arranged with the first guide rail 9. The rolling element 7-3 contacts the second guide rail 11 and runs along the second guide rail 11. "Contacting" can be understood as the top of the rolling element 7-3 pressing against the guide surface of the second guide rail 11, thereby enabling the second guide rail 11 to provide top guidance for the rolling element 7-3. It can be seen that the combined arrangement of the first guide rail 9 and the second guide rail 11 forms vertical guidance, increasing the smoothness of operation. In this embodiment, the rolling element 7-3 is preferably implemented using a bearing.

[0063] The multi-layer curing oven 400 in this embodiment is mainly implemented through the following structure. Specifically, the multi-layer curing oven 400 includes an upper parting zone 12 and a lower parting zone 13 arranged on the same side and in sequence, and a drying chamber 14 and a cooling zone 25 arranged vertically. One end of the cooling zone 25 extends from below the bottom of the drying chamber 14 to correspond to the lower parting zone 12 and the lower parting zone 13. Of course, refer to the attached... Figure 15 In other embodiments, the cooling zone 25 may be located on one side of the drying chamber 14. In this case, the cooling zone 25 located on one side of the drying chamber 14 is below the upper part area 12 and the lower part area 13, and the drying chamber 14 extends from the top to the bottom of the multi-layer curing oven. Thus, the space of the drying chamber 14 is expanded, which is suitable for occasions where production capacity needs to be increased.

[0064] Therefore, the multi-layer curing oven 400 in this embodiment forms a loading and unloading mode with the upper and lower parts at the same end. According to the conveying direction of the conveyor chain group 2, the unloading operation is performed first, followed by the loading operation. For this multi-layer curing oven 400 with loading and unloading at the same end, integrating the upper and lower parts at one end can further shorten the span of the multi-layer curing oven 400 in the length direction, which is very suitable for compact spraying production lines.

[0065] It is considered that the workpiece 5 needs to be cooled after solidification in order to improve efficiency, and therefore in the present embodiment, the cooling zone 25 is configured, which can be a forced cooling zone or a natural cooling zone in the present embodiment. For the forced cooling zone, forced air cooling can be used, which can be understood as using two strong pressure air blowers to blow the workpiece 5 to form a rapid cooling effect.

[0066] The conveying chain group 2 is arranged in each zone in the following manner. Specifically, the conveying chain group 2 is configured to form a cooling chain segment 26 in the cooling zone 25, a general chain segment 27 in the lower piece zone 13 and the upper piece zone 12, and a drying chain segment 19 arranged in the drying chamber 14 and wound up and down.

[0067] Further, the cooling chain segment 26 and the general chain segment 27 are connected by an outer end chain segment 28, the uppermost chain segment in the drying chain segment 19 and the general chain segment 27 are connected by a climbing chain segment 21, adjacent upper and lower chain segments in the drying chain segment 19 are connected by a first inner end chain segment 29, and the lowermost chain segment in the drying chain segment 19 and the cooling chain segment 26 are connected by a second inner end chain segment 30. The conveying chain group 2 of this structure is configured as a multi-layer structure up and down, and the multi-layer solidification furnace 400 forms an upper and lower piece mode with the same end upper and lower pieces. For the embodiment in which the cooling zone 25 is arranged on one side of the drying chamber 14, the lowermost chain segment in the drying chain segment 19 extends out of the drying chamber 14 to form the cooling chain segment 26. In this embodiment, an additional drying chain segment 19 is arranged at the bottom of the drying chamber 14, and adjacent upper and lower chain segments in the drying chain segment 19 are connected by a first inner end chain segment 29. For details, please refer to Figure 15 .

[0068] It should be noted that each chain segment can be understood as a chain segment on the first conveying chain 3 and a chain segment on the second conveying chain 4. Since the first conveying chain 3 and the second conveying chain 4 are symmetrically arranged, each chain segment also includes symmetrically arranged chain segments belonging to the first conveying chain 3 and chain segments belonging to the second conveying chain 4. In addition, the climbing chain segment 21 is arranged in a nearly vertical state in the present embodiment.

[0069] For the specific number, size and position of the sprocket 500 on each chain segment, in the present embodiment, the following manner is mainly adopted. Specifically, the outer end segment 28 is provided with two small sprockets 501 arranged one above the other, which are located on the inner side of the outer end segment 28; the climbing segment 21 is also provided with two small sprockets 501 arranged one above the other, which are located on both sides of the climbing segment 21; each first inner end segment 29 is provided with a large sprocket 502 located on the inner side of the first inner end segment 29; the second inner end segment 30 is also provided with two small sprockets 501 arranged one above the other, which are located on the inner side of the second inner end segment 30.

[0070] For the embodiment in which the cooling zone 25 is located on one side of the drying chamber 14, the cooling segment 26 is formed by the lowest chain segment in the drying segment 19 extending out of the drying chamber 14. At this time, the first inner end segment 29 formed between the lowest drying segment 19 and the adjacent drying segment 19 is provided with two small sprockets 501 arranged one above the other, which are located on the inner side of the first inner end segment 29, and each other first inner end segment 29 is provided with a large sprocket 502. For details, please refer to the above description of the embodiment in which the cooling zone 25 is located on the other side of the drying chamber 14. Figure 15 .

[0071] In the present embodiment, the conveying chain set 2 forms a multi-layer structure through the above-mentioned matching and arrangement of each chain segment, and the sprayed powder or paint on the workpiece 5 can be continuously cured from top to bottom in the vertical direction. In particular, the workpiece 5 can be conveyed on the entire circumference of the conveying chain set 2, and the workpiece 5 can be kept placed on the hanging basket 6 in the correct direction on the entire circumference. It can be seen that the conveying chain set 2 is fully utilized. In addition, the multi-layer structure can significantly shorten the length of the multi-layer curing furnace, and can significantly improve the production capacity and reduce energy consumption compared with the prior art.

[0072] In the present embodiment, for the specific configuration of the drying chamber 14, it is mainly achieved by the following way. Specifically, the drying chamber 14 is provided with a drying area 14-1 and air inlet areas 14-2 located on both sides of the drying area 14-1, the air inlet areas 14-2 are provided with air inlets 14-3 at the top, the drying area 14-1 is provided with air outlets 14-4 at the top, and the air inlet areas 14-2 and the drying area 14-1 are provided with ventilation plates 14-5, a plurality of ventilation holes 14-6 are formed on the ventilation plates 14-5, so that the external hot air flows into the air inlet areas 14-2 through the air inlets 14-3, then flows into the drying area 14-1 through the ventilation holes 14-6 on the ventilation plates 14-5, and finally flows out from the air outlets 14-4, thereby forming the entering, drying and recycling of the hot air. The separately arranged air inlet areas 14-2 on both sides can avoid the direct entry of hot air into the drying area 14-1, which can effectively adjust the air volume of the air inlet areas 14-2, and the hot air uniformly blows to the workpieces 5 on the conveying chain group 2 arranged up and down in the drying area 14-1 through the plurality of ventilation holes 14-6 in a lateral manner, so that the workpieces 5 can be uniformly heated during upward and downward conveying, thereby obtaining excellent curing effect.

[0073] In order to form cold and hot isolation between the drying chamber 14 and the cooling area 25, a partition plate 24 is arranged between the drying chamber 14 and the cooling area 25 to form cold and hot separation, thereby effectively improving the drying effect of the drying chamber 14 and the cooling effect of the cooling area 25.

[0074] Example Two

[0075] Different from the first embodiment, referring to Figures 10-12 , the multi-layer curing furnace 400 includes an upper piece area 12, a lower piece area 13, and a drying chamber 14 and an empty area 15 arranged above and below, one end of the empty area 15 extends from below the bottom of the drying chamber 14 to correspond to the arrangement below the upper piece area 12, and the other end of the empty area 15 also extends from below the bottom of the drying chamber 14 to correspond to the arrangement below the lower piece area 13. The drying chamber 14 forms a region for curing the workpieces 5, the upper piece area 12 forms a region for loading the workpieces 5, the lower piece area 13 forms a region for unloading the workpieces 5, and the empty area 15 can be understood as a region without workpieces 5. Through the cooperation of the above-mentioned areas, the multi-layer curing furnace 400 forms a feeding mode of loading at one end and unloading at the other end, so that the upper piece and the lower piece are separately arranged, which can adapt to the spraying production line which needs to load at one end and unload at the other end.

[0076] In order to improve the efficiency, the workpiece 5 needs to be cooled after solidification. Therefore, in this embodiment, the lower piece area 13 and the other end of the empty area 15 jointly form a strong cooling area or a natural cooling area. It should be noted that the strong cooling area adopts strong air cooling, which can be understood as using two strong pressure air blowers to blow the workpiece 5 to form a rapid cooling effect. Secondly, the other end of the empty area 15 can be understood as the end of the drying chamber 14. Of course, in other embodiments, the lower piece area 13 can also form a strong cooling area or a natural cooling area alone.

[0077] In this embodiment, the specific design and layout of the conveying chain group 2 in the multi-layer solidification furnace 400 are mainly realized in the following manner. Specifically, the conveying chain group 2 is configured to have an empty chain segment 16 in the empty area 15, an upper piece chain segment 17 in the upper piece area 12, a lower piece chain segment 18 in the lower piece area 13, and a drying chain segment 19 in the drying chamber 14 and arranged in an up-down manner. It should be noted that although the empty chain segment 16 has no workpiece 5 placed therein, the hanging basket 6 still exists.

[0078] Further, the empty chain segment 16 and the upper piece chain segment 17 are connected by a first outer end chain segment 20, the uppermost chain segment in the drying chain segment 19 and the upper piece chain segment 17 are connected by a climbing chain segment 21, adjacent upper and lower chain segments in the drying chain segment 19 are connected by an inner end chain segment 22, and the part of the lowermost chain segment in the drying chain segment 19 extending out of the drying chamber 14 forms the lower piece chain segment 18. The lower piece chain segment 18 and the empty chain segment 16 are connected by a second outer end chain segment 23.

[0079] For the specific number, size, and position of the chain wheels 500 on each chain segment, in this embodiment, the following manner is mainly adopted. Specifically, the first outer end chain segment 20 is provided with two small chain wheels 501 arranged in an up-down manner, and the two small chain wheels 501 are located on the inner side of the first outer end chain segment 20. The climbing chain segment 21 is also provided with two small chain wheels 501 arranged in an up-down manner, and the two small chain wheels 501 are located on the two sides of the climbing chain segment 21. Each inner end chain segment 22 is provided with one large chain wheel 502, and the large chain wheel 502 is located on the inner side of the inner end chain segment 22. The second outer end chain segment 23 is also provided with two small chain wheels 501 arranged in an up-down manner, and the two small chain wheels 501 are located on the inner side of the second outer end chain segment 23.

[0080] In order to prevent the hot air in the drying chamber 14 from being scattered outside, a partition plate 24 is also provided between the drying chamber 14 and the empty area 15 to prevent the hot air from being scattered outside, thereby ensuring the drying effect of the drying chamber 14 and improving the production efficiency.

[0081] Example Three

[0082] ReferenceFigures 11-12 、 Figure 14 The embodiment provides a spraying production line, which comprises the multi-layer curing furnace based on the full-chain forward conveying by hanging in the second embodiment.

[0083] Example Four

[0084] Reference Figures 2-5 、 Figure 13 The embodiment provides a spraying production line, which comprises the multi-layer curing furnace based on the full-chain forward conveying by hanging in the first embodiment. The spraying production line comprises spraying, curing and other processes.

[0085] In the multi-layer curing furnace based on the full-chain forward conveying by hanging, the basket 6 can be hung on the circumferences of the two conveying chains after being hung between the symmetrical first conveying chain 3 and the second conveying chain 4 and kept in the state of forward hanging under the action of gravity. When the basket 6 is conveyed to each chain segment, such as a general chain segment, a cooling chain segment, each end chain segment, a climbing chain segment, an empty chain segment, an upper piece chain segment, a lower piece chain segment and a drying chain segment, the basket 6 can be kept in the state of forward hanging on the chain segment under the action of gravity, so that the workpiece 5 can be placed forward all the time to realize the full-chain forward conveying.

[0086] It should be noted that the drying chamber 14, the upper piece area 12, the lower piece area 13, the cooling area 25 and the empty area 15 in the above embodiments are only indicated by dotted lines in the corresponding drawings and are only used for distinguishing, and cannot be used as the limitation of the protection scope of the application.

[0087] Secondly, the basket 6 in each of the above embodiments can have various realizable styles and structures, as long as the structure can meet the requirement of placing the workpiece 5 forward.

[0088] The embodiments of the present application are described above with reference to the accompanying drawings, but the present application is not limited to the specific embodiments described above, and the specific embodiments described above are merely illustrative, but not restrictive, and a person of ordinary skill in the art can make many forms under the inspiration of the present application without departing from the purpose of the present application and the scope protected by the claims.

Claims

1. A multi-layer curing furnace based on hitching full chain forward conveying, characterized in that, The rack, the upper and lower winding conveying chain group, the first conveying chain and the second conveying chain, the hanging basket, the hook, the hanging shaft, the first guide rail, the second guide rail, the multi-layer curing furnace, the upper part area and the lower part area, the drying chamber and the empty area, the conveying chain group, the cooling chain segment, the general chain segment, the drying chain segment, the drying chamber, the air inlet, the air outlet, and the hanging basket on the conveying chain group.

2. The multi-tier curing furnace based on hitching full chain forward conveying according to claim 1, characterized in that, The rack, the upper and lower winding conveying chain group, the first conveying chain and the second conveying chain, the hanging basket, the hook, the hanging shaft, the first guide rail, the second guide rail, the multi-layer curing furnace, the upper part area and the lower part area, the drying chamber and the empty area, the conveying chain group, the cooling chain segment, the general chain segment, the drying chain segment, the drying chamber, the air inlet, the air outlet, and the hanging basket on the conveying chain group.

3. The multi-tier curing furnace based on hitching full chain forward conveying according to claim 2, characterized in that, The rack is provided with the first guide rail corresponding to the horizontal section of the chain, and the roller of the chain touches the first guide rail and runs along the first guide rail.

4. The multi-tier curing furnace based on hitching full chain forward conveying according to claim 3, characterized in that, The hanging shaft is provided with the rolling body, and the rack is provided with the second guide rail corresponding to the horizontal section of the chain, and the rolling body touches the second guide rail and runs along the second guide rail.

5. The multi-tier curing furnace based on hitching full chain forward conveying according to claim 1, characterized in that, The multi-layer curing furnace comprises an upper part area, a lower part area, and a drying chamber and an empty area arranged above and below, one end of the empty area extends from below the bottom of the drying chamber to correspond to the arrangement below the upper part area, and the other end of the empty area also extends from below the bottom of the drying chamber to correspond to the arrangement below the lower part area.

6. The multi-tier curing furnace based on hitching full chain forward conveying according to claim 5, characterized in that, The conveying chain group is configured to form an empty chain segment in the empty area, an upper part chain segment in the upper part area, a lower part chain segment in the lower part area, and a drying chain segment in the drying chamber and winding above and below, the empty chain segment and the upper part chain segment are connected by a first outer end chain segment, the uppermost chain segment in the drying chain segment and the upper part chain segment are connected by a climbing chain segment, adjacent upper and lower chain segments in the drying chain segment are connected by an inner end chain segment, the lowermost chain segment in the drying chain segment forms the lower part chain segment from the part extending from the drying chamber, and the lower part chain segment and the empty chain segment are connected by a second outer end chain segment.

7. The multi-tier curing furnace based on hitching full chain forward conveying according to claim 1, characterized in that, The multi-layer curing furnace comprises a same side and sequentially arranged upper part area and lower part area, and a drying chamber and a cooling area arranged above and below, one end of the cooling area extends from below the bottom of the drying chamber to correspond to the arrangement below the upper part area and the lower part area.

8. The multi-tier curing furnace based on hitching full chain forward conveying according to claim 7, characterized in that, The conveying chain group is configured to form a cooling chain segment in the cooling area, a general chain segment in the lower part area and the upper part area, and a drying chain segment in the drying chamber and winding above and below, the cooling chain segment and the general chain segment are connected by an outer end chain segment, the uppermost chain segment in the drying chain segment and the general chain segment are connected by a climbing chain segment, adjacent upper and lower chain segments in the drying chain segment are connected by a first inner end chain segment, and the lowermost chain segment in the drying chain segment and the cooling chain segment are connected by a second inner end chain segment.

9. The multi-tier curing furnace based on hitching full chain forward conveying according to claim 5 or 7, characterized in that, The drying chamber has a drying area and an air inlet area on both sides of the drying area, an air inlet is arranged at the top of the air inlet area, an air outlet is arranged at the top of the drying area, a ventilation plate is arranged between the air inlet area and the drying area, a plurality of ventilation holes are formed in the ventilation plate, external hot air flows into the air inlet area through the air inlet, then flows into the drying area through the ventilation holes in the ventilation plate, and finally flows out from the air outlet.

10. The multi-tier curing furnace based on hitching full chain forward conveying according to claim 2, characterized in that, The hanging basket is uniformly distributed on the conveying chain group.

11. A spray painting line, characterized by A multi-layer curing furnace based on hitching full-chain forward conveying according to any one of claims 1-10. A multi-layer curing furnace based on hitching full-chain forward conveying according to any one of claims 1-10.

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