A painting and drying equipment

Abstract

The present invention belongs to the technical field of coating drying, and discloses a coating drying device, including a drying box and a placing table, wherein a power motor is provided on the top of the drying box, and a variable-type purge drying section is symmetrically provided inside the drying box, and the upper and lower ends of the variable-type purge drying section are both connected and provided with a connecting section. The present invention uses an air pump, a distribution part, a pushing component and a variable-type purge drying section. When the actual workpiece is dried, according to the external structure of the workpiece, the deformation of the variable-type purge drying section is controlled by changing the input amount of the pressurized air, and the posture changes from "<" "I" to ">" to adapt to the special-shaped outer side of the workpiece. For the convex and concave structural surfaces, adaptive hot air purge is achieved by changing the angle of the corresponding air outlet, which greatly improves the drying effect, ensures uniform drying, avoids the problem of incomplete drying in local dead corners, greatly improves the final drying efficiency, and has a good use effect.

Description

Technical Field

[0001] The present invention belongs to the technical field of painting and drying, and specifically relates to a painting and drying device. Background Art

[0002] A painting and drying device is an industrial device used for drying coatings, and is widely used in processes such as painting, spraying, and painting to ensure that the coating reaches the drying and curing effect within a certain time.

[0003] In the existing painting and drying devices, during use, workpieces are usually placed in a drying box, and are dried by the internal drying device and hot air blowing while rotating to complete the drying process of the outer side painting part of the workpiece. However, due to the abnormal shape of the outer side of some workpieces, there are a large number of structural features such as depressions and protrusions. In the current blowing and drying process, the direction of hot air blowing is fixed, making it difficult to adapt to the outer side of the abnormal-shaped workpieces. There are dead corners in the actual hot air drying process, the overall drying uniformity is low, the actual drying quality is poor, and the efficiency is low. Summary of the Invention

[0004] The purpose of the present invention is to provide a painting and drying device to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A painting and drying device includes a drying box and a placement table. A power motor is provided at the top of the drying box. Deformable blowing and drying parts are symmetrically provided inside the drying box. Both the upper and lower ends of the deformable blowing and drying parts are communicated with communicating parts. A connecting piece is fixedly connected between the left and right two groups of communicating parts. The upper end of the connecting piece passes through the drying box and is fixedly connected with the output shaft of the power motor. A pushing component is fixedly connected to the side of the deformable blowing and drying part. The other end of the pushing component is fixedly communicated with a distribution part. The communicating parts are symmetrically and fixedly connected to the upper and lower sides of the distribution part. An air pump and an electric push rod are respectively provided outside the distribution part. A switching mechanism is provided inside the distribution part. The electric push rod controls the distribution part to be independently communicated with the communicating part and the pushing component respectively through the switching mechanism. An air outlet is provided on the front of the deformable blowing and drying part, and an electric heating tube is fixedly provided inside.

[0006] Preferably, the deformable blowing and drying part includes a blowing frame one, a blowing frame two, an adaptation groove, an adaptation block, a connecting frame, and an intermediate shaft. The adaptation groove is opened at the top of the blowing frame one. The adaptation block is fixedly connected to the bottom of the blowing frame two. The intermediate shaft movably passes through the blowing frame one and the adaptation block. The adaptation block is located in the adaptation groove. The intermediate shaft is fixedly connected in the connecting frame. The connecting frame is located outside the connection between the blowing frame one and the blowing frame two. The air outlet is opened on the front of the blowing frame one and the blowing frame two. The electric heating tube is fixedly installed inside the blowing frame one and the blowing frame two.

[0007] Preferably, the connecting part) includes a connecting frame and an elastic tube. The elastic tube is fixed on the connecting frame, the connecting frame is fixedly connected to the outside of the distribution part, and both far ends of the first purging frame and the second purging frame are fixedly communicated with the elastic tube.

[0008] Preferably, the pushing assembly includes a sleeve, a push rod and a first spring. The sleeve is fixedly connected to the outer side surface of the distribution part. One end of the push rod is fixedly connected to the connecting frame, and the other end is movably sleeved in the sleeve. One end of the first spring is fixedly connected to the inner end of the push rod, and the other end is fixed to the end surface of the distribution part and is located in the sleeve.

[0009] Preferably, the distribution part includes a communicating cover, a first port and a second port. The first port is opened on the outer side surface of the communicating cover and is communicated with the connecting frame. The second port is opened on the end surface of the communicating cover and is communicated with the sleeve.

[0010] Preferably, the switching mechanism includes a movable ring, a conducting tube, a curved rod and a sealing plug. The conducting tube is fixedly sleeved inside the communicating cover, and one end is nested in the second port. The movable ring is movably sleeved inside the communicating cover and is movably sleeved outside the conducting tube. One end of the curved rod is fixed on the movable ring, and the other end is fixed on the sealing plug. The sealing plug faces the conducting tube, and the size of the sealing plug is adapted to the inner cavity size of the conducting tube.

[0011] Preferably, the movable end of the electric push rod passes through the communicating cover and is fixedly connected to the movable ring. The air outlet end of the air pump is communicated with the inside of the communicating cover.

[0012] Preferably, the top of the connecting piece is rotatably sleeved in the drying box through a bearing. The placing table is fixed at the bottom of the inner cavity of the drying box. The deformable purging and drying parts are symmetrically distributed on both sides of the placing table. An opening and closing door is arranged on the front of the drying box. The power motor is fixed on the top of the drying box through a support.

[0013] Preferably, the side of the pushing assembly is fixedly communicated with an auxiliary control assembly. A convex assembly is fixedly arranged on the top of the drying box. The auxiliary control assembly includes a communicating pipe, a connecting cylinder, a movable plug, a second spring, a top rod and a positioning rod. One end of the communicating pipe is fixedly connected to the outside of the pushing assembly and is communicated with the inside of the pushing assembly. The connecting cylinder is fixedly connected to the top of the communicating pipe. The movable plug is movably sleeved in the connecting cylinder. The second spring is fixedly connected inside the connecting cylinder and the upper end is fixedly connected to the movable plug. The top rod is fixedly connected to the top of the movable plug and the upper end movably passes through the top of the connecting cylinder. The positioning rod is fixed in the connecting cylinder and is located above the movable plug.

[0014] Preferably, the protrusion assembly includes a mounting ring, an arc-shaped protrusion, a hydraulic push rod and a mounting frame, the arc-shaped protrusion is fixedly connected to the bottom of the mounting ring, the hydraulic push rod is fixed to the top of the drying box, one end of the mounting frame is fixedly connected to the mounting ring, and the other end is fixedly connected to the movable end of the hydraulic push rod, the bottom of the arc-shaped protrusion is movable through the drying box and extends to the interior, the arc-shaped protrusion is located on the rotation path of the top rod, and the two sides of the bottom of the arc-shaped protrusion are symmetrical and inclined.

[0015] The beneficial effects of the present invention are as follows:

[0016] (1) The present invention utilizes an air pump, a distribution part, a pushing assembly, and a variable-type blowing and drying part. When the actual workpiece is dried, the input amount of the pressurized air is changed according to the external structure of the workpiece to control the deformation of the variable-type blowing and drying part, and the posture is changed from "<" "I" to ">" to adapt to the special-shaped outer side of the workpiece. For the convex and concave structural surfaces, the angle of the corresponding air outlet is changed to achieve adaptive hot air blowing, which greatly improves the drying effect, ensures uniform drying, avoids the problem of incomplete drying in local dead corners, greatly improves the final drying efficiency, and has a good use effect.

[0017] (2) The present invention reuses the distribution part, as well as the movable ring, the conducting tube and the sealing plug in the distribution part, and uses an air pump to realize deformation adjustment of the variable form blowing and drying part. After completing the deformation control, the air outlet direction is quickly switched through the movement of the movable ring to guide the pressurized air into the variable form blowing and drying part, and cooperates with the electric heating tube to complete the hot air treatment and dry the workpiece. The drying equipment has a compact structure, and the action of first adjusting and then blowing is continuous. No additional power equipment is required, and deformation control and hot air blowing and drying can be quickly realized.

[0018] (3) The present invention reuses the pushing component and the variable-type purge and drying section, cooperates with the auxiliary control component connected to the side of the pushing component, and utilizes the raised component on the top of the drying box to control the downward movement of the arc-shaped protrusion, so that the arc-shaped protrusion moves to the moving path of the top rod in the auxiliary control component, and forms intermittent squeezing and pushing during the rotation process. The squeezing and pushing effect is used to compress the air in the connecting cylinder, and the internal air pressure is enhanced when the pushing component is sealed. The air pressure is used to push the variable-type purge and drying section to actively deform, and cooperates with multiple groups of arc-shaped protrusions to dynamically change different angles during the rotation process to adapt to more complex outer surfaces of workpieces, thereby further improving the drying effect of the outer surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 It is a cross-sectional schematic diagram of the present invention;

[0021] Figure 3 Schematic diagram of the position of the convex component and the auxiliary control component of the present invention;

[0022] Figure 4 Schematic connection diagram of the deformable purging and drying section and the pushing component of the present invention;

[0023] Figure 5 Explosion diagram of the deformable purging and drying section of the present invention;

[0024] Figure 6 Cross-sectional schematic diagram of purging frame one of the present invention;

[0025] Figure 7 Schematic diagram of the communication part of the present invention;

[0026] Figure 8 Explosion diagram of the pushing component of the present invention;

[0027] Figure 9 Cross-sectional schematic diagram of the distribution part of the present invention;

[0028] Figure 10 Cross-sectional schematic diagram of the auxiliary control component of the present invention;

[0029] Figure 11 Schematic diagram of the convex component of the present invention.

[0030] In the figure: 1, drying box; 2, power motor; 3, connecting piece; 4, communication part; 41, communication frame; 42, elastic tube; 5, deformable purging and drying section; 51, purging frame one; 52, purging frame two; 53, fitting groove; 54, fitting block; 55, connecting frame; 56, intermediate shaft; 6, pushing component; 61, sleeve; 62, push rod; 63, first spring; 7, distribution part; 71, communication cover; 72, first port; 73, second port; 8, placing table; 9, air outlet hole; 10, electric heating tube; 11, air pump; 12, electric push rod; 13, movable ring; 14, conduction tube; 15, curved rod; 16, sealing plug; 17, auxiliary control component; 171, communication tube; 172, connecting cylinder; 173, movable plug; 174, second spring; 175, top rod; 176, positioning rod; 18, convex component; 181, mounting ring; 182, arc-shaped convex block; 183, hydraulic push rod; 184, mounting frame. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] As Figures 1 to 11 shown, an embodiment of the present invention provides a painting and drying device, including a drying box 1 and a placement table 8. A power motor 2 is provided at the top of the drying box 1. Deformable purge drying parts 5 are symmetrically arranged inside the drying box 1. Connecting parts 4 are connected to both the upper and lower ends of the deformable purge drying parts 5 in a communicating manner. A connecting piece 3 is fixedly connected between the left and right groups of connecting parts 4. The upper end of the connecting piece 3 passes through the drying box 1 and is fixedly connected to the output shaft of the power motor 2. A pushing assembly 6 is fixedly connected to the side of the deformable purge drying part 5. The other end of the pushing assembly 6 is fixedly connected and communicated with a distribution part 7. The connecting parts 4 are symmetrically and fixedly connected to the upper and lower sides of the distribution part 7. An air pump 11 and an electric push rod 12 are respectively arranged outside the distribution part 7. A switching mechanism is arranged inside the distribution part 7. The electric push rod 12 controls the distribution part 7 to be independently communicated with the connecting part 4 and the pushing assembly 6 respectively through the switching mechanism. An air outlet 9 is arranged on the front of the deformable purge drying part 5, and an electric heating tube 10 is fixedly arranged inside.

[0033] Embodiment 1: During use, place the painted workpiece to be dried on the placement table 8 of the drying box 1. Adjust the shape of the deformable purging and drying part 5 according to the external shape of the workpiece. When the outer side structure of the workpiece is consistent and changes little, directly start the air pump 11. The pressurized air is input into the distribution part 7, and is input into the second port 73 along the conduction pipe 14, and then input into the pushing assembly 6, pushing the push rod 62 to move, stretching the first spring 63. The push rod 62 moves and drives the connecting frame 55 in the deformable purging and drying part 5 to move, so that the purge frame two 52 and the purge frame one 51 that are vertically rotatably connected rotate and remain synchronously vertical, driving the elastic tube 42 to deform. The air outlet holes 9 in the purge frame two 52 and the purge frame one 51 are vertically oriented towards the outer side of the workpiece. Start the electric push rod 12, drive the movable ring 13 to move along the conduction pipe 14, drive the sealing plug 16 to seal the conduction pipe 14, and the first port 72 is opened. Keep the air pump 11 running, and at the same time start the electric heating tube 10. The air pump 11 inputs the pressurized air into the connecting cover 71, and through the first port 72, the connecting frame 41, and the elastic tube 42, it is input into the interiors of the purge frame two 52 and the purge frame one 51, and is simultaneously purged out along the air outlet holes 9 and towards the outer side of the workpiece. Start the power motor 2, drive the connecting member 3 to rotate, and drive the connecting parts 4 on both sides to rotate, so that the two deformable purging and drying parts 5 rotate around the outer side of the workpiece to complete the hot air surrounding purging and drying; when there are a large number of protrusions on the outer side of the workpiece, first keep the sealing plug 16 in the conduction pipe 14 removed, keep the air pump 11 stopped, and the pressurized air in the pushing assembly 6 is automatically emptied. The first spring 63 drives the push rod 62 to maintain the initial state, so that the purge frame two 52 and the purge frame one 51 in the deformable purging and drying part 5 remain in a "<" shape. Then seal the conduction pipe 14, start the air pump 11 and the power motor 2. As the purge frame two 52 and the purge frame one 51 arranged in a "<" shape purge around the workpiece, the heated hot air is purged onto each surface on the outside of the special-shaped workpiece to complete the comprehensive hot air purging and drying; when there are a large number of concave surfaces on the outer side of the workpiece, start the air pump 11 and continuously supply air to the pushing assembly 6 in cooperation with the conduction pipe 14. Under the pressurized air, the push rod 62 drives the deformable purging and drying part 5 to deform, so that the purge frame two 52 and the purge frame one 51 remain in a ">" shape and face the workpiece. Then seal the conduction pipe 14, and introduce the pressurized air into the connecting part 4. Start the power motor 2, and the purge frame two 52 and the purge frame one 51 arranged in a ">" shape rotate around the outside of the special-shaped workpiece to fully purge and dry the outer concave surfaces.

[0034] First, by utilizing the air pump 11, the distribution unit 7, the pushing assembly 6, and the deformable purging and drying unit 5, when drying an actual workpiece, according to the external structure of the workpiece, by changing the input amount of compressed air, the deformation of the deformable purging and drying unit 5 is controlled, changing its posture from "<", "I" to ">", adapting to the irregular outer side of the workpiece. For the convex and concave structural surfaces, by changing the angle of the corresponding air outlet 9, adaptive hot air purging is achieved, greatly improving the drying effect, ensuring uniform drying treatment, avoiding the problem of incomplete drying in local dead corners, greatly improving the final drying efficiency, and having good use effects.

[0035] In addition, by utilizing the distribution unit 7 again, and the movable ring 13, the conduction pipe 14, and the sealing plug 16 in the distribution unit 7, while using the air pump 11 to achieve deformation adjustment of the deformable purging and drying unit 5, after completing the deformation control, through the movement of the movable ring 13, the air outlet direction is quickly switched, guiding the compressed air into the deformable purging and drying unit 5, and cooperating with the electric heating pipe 10 to complete the hot air treatment and dry the workpiece. The drying equipment has a compact structure, the actions of adjusting first and then purging are continuous, without the need to provide additional power equipment, and the deformation control and hot air purging and drying can be quickly achieved.

[0036] Embodiment 2: When the outer side of the irregular workpiece is relatively complex, the sealing plug 16 seals the conduction pipe 14, the movable ring 13 opens the first port 72, the air pump 11 is started and the compressed air is input into the connecting part 4 and guided into the deformable purging and drying unit 5. At the same time, the convex assembly 18 is started, and the hydraulic push rod 183 in the convex assembly 18 drives the mounting ring 181 and the arc-shaped convex block 182 to move downward and stop. As the power motor 2 drives the deformable purging and drying unit 5 to rotate, the auxiliary control assembly 17 on one side of the pushing assembly 6 rotates accordingly, and the top rod 175 in the auxiliary control assembly 17 intermittently squeezes against the arc-shaped convex block 182 during the rotation process, and when squeezing, the air inside the connecting cylinder 172 is compressed, compressing the second compression spring 174. Meanwhile, the air pressure inside the connected pushing assembly 6 increases, the internal air pressure increases and acts on the push rod 62, and pushes the deformable purging and drying unit 5 to deform. And during the rotation process, the deformable purging and drying unit 5 deforms intermittently, and hot air purging and drying of different angles are performed on the outer side of the irregular workpiece.

[0037] First, by reusing the driving component 6 and the deformable purging and drying section 5, in cooperation with the auxiliary control component 17 connected to the side of the driving component 6, and using the protruding component 18 on the top of the drying box 1, by controlling the downward movement of the arc-shaped bump 182, the arc-shaped bump 182 is moved to the movement path of the top rod 175 in the auxiliary control component 17, and intermittent extrusion is formed during rotation. The air in the connecting cylinder 172 is compressed by the extrusion effect. In the sealed state of the driving component 6, the internal air pressure is enhanced, and the deformable purging and drying section 5 is actively deformed by the air pressure. In cooperation with multiple arc-shaped bumps 182, different angles are dynamically changed during rotation to adapt to the more complex outer side of the workpiece, further improving the drying effect of the outer side.

[0038] Among them, the deformable purging and drying section 5 includes a purging frame one 51, a purging frame two 52, an adaptation slot 53, an adaptation block 54, a connecting frame 55 and an intermediate shaft 56. The adaptation slot 53 is opened at the top of the purging frame one 51. The adaptation block 54 is fixedly connected to the bottom of the purging frame two 52. The intermediate shaft 56 movably passes through the purging frame one 51 and the adaptation block 54. The adaptation block 54 is located in the adaptation slot 53. The intermediate shaft 56 is fixedly connected in the connecting frame 55. The connecting frame 55 is located outside the connection of the purging frame one 51 and the purging frame two 52. The air outlet 9 is opened on the front of the purging frame one 51 and the purging frame two 52. The electric heating tube 10 is fixedly installed inside the purging frame one 51 and the purging frame two 52.

[0039] By using the rotation and deformation of the purging frame one 51 and the purging frame two 52 in the deformable purging and drying section 5 to change the orientation of the air outlet 9, adapting to the outer sides of different workpieces, comprehensive drying and purging are completed, avoiding dead corners. The electric heating tube 10 is energized to generate heat, heating the flowing air volume and forming hot air to blow out.

[0040] Among them, the communication part 4 includes a communication frame 41 and an elastic tube 42. The elastic tube 42 is fixed on the communication frame 41. The communication frame 41 is fixedly connected to the outside of the distribution part 7. Both far ends of the purging frame one 51 and the purging frame two 52 are fixedly communicated with the elastic tube 42.

[0041] The communication part 4 realizes gas conduction, supports and connects the deformable purging and drying section 5, and uses the elastic tube 42 to adapt to the swing and torsion of the purging frame one 51 and the purging frame two 52, maintaining stable gas conduction.

[0042] Among them, the driving component 6 includes a sleeve 61, a push rod 62 and a first spring 63. The sleeve 61 is fixedly connected to the outer side of the distribution part 7. One end of the push rod 62 is fixedly connected to the connecting frame 55, and the other end is movably sleeved in the sleeve 61. One end of the first spring 63 is fixedly connected to the inner end of the push rod 62, and the other end is fixed to the end face of the distribution part 7 and is located in the sleeve 61.

[0043] The pushing component 6 is driven by the internally input pressurized air to push the push rod 62, thereby controlling the swinging and twisting of the first purge frame 51 and the second purge frame 52 in the deformable purge and drying section 5.

[0044] Among them, the distribution section 7 includes a connecting cover 71, a first port 72, and a second port 73. The first port 72 is opened on the outer side surface of the connecting cover 71 and communicates with the connecting frame 41. The second port 73 is opened on the end surface of the connecting cover 71 and communicates with the sleeve 61. The switching mechanism includes a movable ring 13, a conduction pipe 14, a curved rod 15, and a sealing plug 16. The conduction pipe 14 is fixedly sleeved inside the connecting cover 71, and one end is nested in the second port 73. The movable ring 13 is movably sleeved inside the connecting cover 71 and is movably sleeved outside the conduction pipe 14. One end of the curved rod 15 is fixed on the movable ring 13, and the other end is fixed on the sealing plug 16. The sealing plug 16 faces the conduction pipe 14, and the size of the sealing plug 16 is adapted to the inner cavity size of the conduction pipe 14. The movable end of the electric push rod 12 passes through the connecting cover 71 and is fixedly connected to the movable ring 13. The air outlet end of the air pump 11 communicates with the inside of the connecting cover 71.

[0045] The distribution section 7 connects the output air of the air pump 11 and, in cooperation with the switching mechanism, realizes the output of internal air in different directions. Before drying, it is introduced into the pushing component 6 to realize the swinging and twisting of the first purge frame 51 and the second purge frame 52. After adjustment, it is introduced into the connecting section 4 to cooperate with the deformable purge and drying section 5 to realize hot air purging.

[0046] Among them, the top of the connecting piece 3 is rotatably sleeved in the drying box 1 through a bearing. The placing table 8 is fixed at the bottom of the inner cavity of the drying box 1. The deformable purge and drying sections 5 are symmetrically distributed on both sides of the placing table 8. An opening and closing door is provided on the front of the drying box 1. The power motor 2 is fixed on the top of the drying box 1 through a support.

[0047] The connecting piece 3 realizes the synchronous rotation of the symmetrically arranged connecting sections 4 on both sides and the deformable purge and drying sections 5.

[0048] Among them, an auxiliary control component 17 is fixedly connected to the side of the pushing component 6, and a convex component 18 is fixedly provided on the top of the drying box 1. The auxiliary control component 17 includes a connecting pipe 171, a connecting cylinder 172, a movable plug 173, a second spring 174, a top rod 175 and a positioning rod 176. One end of the connecting pipe 171 is fixedly connected to the outside of the pushing component 6 and is communicated with the inside of the pushing component 6. The connecting cylinder 172 is fixedly connected to the top of the connecting pipe 171. The movable plug 173 is movably sleeved in the connecting cylinder 172. The second spring 174 is fixedly connected to the inside of the connecting cylinder 172 and its upper end is fixedly connected to the movable plug 173. The top rod 175 is fixedly connected to the top of the movable plug 173 and its upper end movably passes through the top of the connecting cylinder 172. The positioning rod 176 is fixed in the connecting cylinder 172 and is located above the movable plug 173. The convex component 18 includes a mounting ring 181, an arc-shaped convex block 182, a hydraulic push rod 183 and a mounting bracket 184. The arc-shaped convex block 182 is fixedly connected to the bottom of the mounting ring 181. The hydraulic push rod 183 is fixed on the top of the drying box 1. One end of the mounting bracket 184 is fixedly connected to the mounting ring 181 and the other end is fixedly connected to the movable end of the hydraulic push rod 183. The bottom of the arc-shaped convex block 182 movably passes through the drying box 1 and extends into the interior. The arc-shaped convex block 182 is located on the rotation path of the top rod 175. The two sides of the bottom of the arc-shaped convex block 182 are symmetrical and are inclined planes.

[0049] The auxiliary control component 17 cooperates with the convex component 18. When the pushing component 6 is sealed and rotates for purging and drying, through the intermittent extrusion effect, the air pressure in the pushing component 6 is intermittently increased to control the gradual deformation of the deformable purging and drying part 5. During the rotational purging, the dynamic change has a more sufficient angle, further improving the purging and drying effect of the special-shaped surface.

[0050] Working principle and usage process of the present invention: During use, place the painted workpiece to be dried on the placement table 8 of the drying box 1, and adjust the shape of the deformable blowing and drying part 5 according to the external shape of the workpiece. When the outer side structure of the workpiece is consistent and changes little, directly start the air pump 11. The pressurized air is input into the distribution part 7, and is input into the second port 73 along the conduction pipe 14, and then input into the pushing assembly 6, pushing the push rod 62 to move, stretching the first spring 63. The push rod 62 moves and drives the connecting frame 55 in the deformable blowing and drying part 5 to move, causing the second blowing frame 52 and the first blowing frame 51 that are vertically rotatably connected to rotate and remain synchronously vertical, driving the elastic tube 42 to deform. The air outlet holes 9 in the second blowing frame 52 and the first blowing frame 51 are vertically oriented towards the outer side of the workpiece. Start the electric push rod 12, drive the movable ring 13 to move along the conduction pipe 14, drive the sealing plug 16 to seal the conduction pipe 14, and the first port 72 is opened. Keep the air pump 11 running, and at the same time start the electric heating tube 10. The air pump 11 inputs the pressurized air into the connecting cover 71, and through the first port 72, the connecting frame 41, and the elastic tube 42, it is input into the interiors of the second blowing frame 52 and the first blowing frame 51, and is simultaneously blown out along the air outlet holes 9 and towards the outer side of the workpiece. Start the power motor 2, drive the connecting member 3 to rotate, and drive the two connecting parts 4 on both sides to rotate, causing the two deformable blowing and drying parts 5 to rotate around the outer side of the workpiece to complete hot air surrounding blowing and drying; When there are a large number of protrusions on the outer side of the workpiece, first keep the sealing plug 16 in the conduction pipe 14 removed, stop the air pump 11, and the pressurized air in the pushing assembly 6 is automatically emptied. The first spring 63 drives the push rod 62 to maintain the initial state, causing the second blowing frame 52 and the first blowing frame 51 in the deformable blowing and drying part 5 to remain in a "<" shape. Subsequently, seal the conduction pipe 14, start the air pump 11 and the power motor 2. As the second blowing frame 52 and the first blowing frame 51 arranged in a "<" shape blow around the workpiece, the heated hot air is blown to each surface on the outside of the special-shaped workpiece to complete comprehensive hot air blowing and drying; When there are a large number of concave surfaces on the outer side of the workpiece, start the air pump 11 and continuously supply air to the pushing assembly 6 in cooperation with the conduction pipe 14. Under the pressurized air, the push rod 62 drives the deformable blowing and drying part 5 to deform, causing the second blowing frame 52 and the first blowing frame 51 to remain in a ">" shape and face the workpiece. Subsequently, seal the conduction pipe 14 and introduce the pressurized air into the connecting part 4. Start the power motor 2, and the second blowing frame 52 and the first blowing frame 51 arranged in a ">" shape rotate around the outside of the special-shaped workpiece to fully blow and dry the outer concave surfaces;When the outer side surface of the special-shaped workpiece is relatively complex, keep the sealing plug 16 sealing the conduction pipe 14, open the first port 72 by the movable ring 13, start the air pump 11 and input pressurized air into the communication part 4, and guide it to the deformable purging and drying part 5. At the same time, start the convex component 18. The hydraulic push rod 183 in the convex component 18 drives the mounting ring 181 and the arc-shaped convex block 182 to move downward and stop. As the power motor 2 drives the deformable purging and drying part 5 to rotate, the auxiliary control component 17 on one side of the pushing component 6 rotates accordingly. And the top rod 175 in the auxiliary control component 17 intermittently presses against the arc-shaped convex block 182 during the rotation process, and compresses the air inside the connecting cylinder 172 when pressing, while compressing the second compression spring 174, the air pressure inside the connected pushing component 6 increases, the internal air pressure increases and acts on the push rod 62, and pushes the deformable purging and drying part 5 to deform. And during the rotation process, the deformable purging and drying part 5 deforms intermittently, and hot air blows and dries the outer side surface of the special-shaped workpiece at different angles.

[0051] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coating drying device, comprising a drying box (1) and a placing table (8), characterized in that: The top of the drying box (1) is provided with a power motor (2), and a variable-type purge drying section (5) is symmetrically provided inside the drying box (1). The upper and lower ends of the variable-type purge drying section (5) are both connected with a connecting section (4), and a connecting piece (3) is fixedly connected between the left and right groups of the connecting sections (4). The upper end of the connecting piece (3) passes through the drying box (1) and is fixedly connected to the output shaft of the power motor (2). The side of the variable-type purge drying section (5) is fixedly connected with a pushing assembly (6), and the other end of the pushing assembly (6) is fixedly connected with a distribution section (7). The connecting section (4) is symmetrically fixedly connected to the upper and lower sides of the distribution section (7). The outside of the distribution section (7) is respectively provided with an air pump (11) and an electric push rod (12), and the inside of the distribution section (7) is provided with a switching mechanism. The electric push rod (12) controls the distribution section (7) to be independently connected with the connecting section (4) and the pushing assembly (6) through the switching mechanism. The drying section (5) is provided with an air outlet (9) on the front side, and an electric heating tube (10) is fixedly provided inside. The modified purge drying section (5) comprises a purge frame 1 (51), a purge frame 2 (52), an adaptor slot (53), an adaptor block (54), a connecting frame (55) and an intermediate shaft (56). The adaptor slot (53) is provided at the top of the purge frame 1 (51), the adaptor block (54) is fixedly connected to the bottom of the purge frame 2 (52), and the intermediate shaft (56) movably passes through the connecting frame. A purge frame (51) and an adapter block (54), wherein the adapter block (54) is located in the adapter groove (53), the intermediate shaft (56) is fixedly connected to a connecting frame (55), the connecting frame (55) is located outside the connection between the purge frame (51) and the purge frame (52), the air outlet (9) is provided on the front side of the purge frame (51) and the purge frame (52), and the electric heating tube (10) is fixedly installed inside the purge frame (51) and the purge frame (52). The pushing assembly (6) comprises a sleeve (61), a push rod (62) and a spring (63); the sleeve (61) is fixedly connected to the outer surface of the distribution portion (7); one end of the push rod (62) is fixedly connected to the connecting frame (55), and the other end is movably sleeved in the sleeve (61); one end of the spring (63) is fixedly connected to the inner end of the push rod (62), and the other end is fixed to the end surface of the distribution portion (7) and is located in the sleeve (61); the side of the pushing assembly (6) is fixedly connected to the auxiliary control assembly (17); the top of the drying box (1) is fixedly provided with a protrusion assembly (18); When the outer side surface of the workpiece has a large number of protrusions, the pushing component (6) causes the purge frame 2 (52) and the purge frame 1 (51) in the modified purge drying section (5) to maintain a "<" shape. As the purge frame 2 (52) and the purge frame 1 (51) arranged in the "<" shape blow around the workpiece, the heated hot air is blown onto each surface of the outer side of the irregular workpiece, thereby completing comprehensive hot air blowing and drying. When the outer side surface of the workpiece has a large number of concave surfaces, the purge frame 2 (52) and the purge frame 1 (51) are maintained in a ">" shape and directed toward the workpiece through the air pump (11) and the pushing component (6). The second purge frame (52) and the first purge frame (51) arranged in a ">" shape rotate around the outer side of the irregular-shaped workpiece to fully purge and dry the outer concave surface. By changing the input amount of pressurized air, the deformation of the variable-shaped purge and drying section (5) is controlled to change from the posture of "<" "I" to ">" to adapt to the irregular-shaped outer side surface of the workpiece. Adaptive hot air purge is achieved for the convex and concave structural surfaces. The auxiliary control component (17) and the convex component (18) are used to form intermittent squeezing and pushing during the rotation process, so that the variable-shaped purge and drying section (5) is actively deformed and dynamically changes different angles during the rotation process to adapt to more complex outer side surfaces of the workpiece.

2. A coating drying equipment according to claim 1, characterized in that: The communication portion (4) comprises a communication frame (41) and an elastic tube (42), wherein the elastic tube (42) is fixed on the communication frame (41), the communication frame (41) is fixedly connected to the outside of the distribution portion (7), and both remote ends of the purge frame 1 (51) and the purge frame 2 (52) are fixedly connected to the elastic tube (42).

3. A coating drying equipment according to claim 2, characterized in that: The distribution portion (7) comprises a connecting cover (71), a first port (72) and a second port (73); the first port (72) is provided on the outer surface of the connecting cover (71) and is in communication with the connecting frame (41); the second port (73) is provided on the end surface of the connecting cover (71) and is in communication with the sleeve (61).

4. A coating drying equipment according to claim 3, characterized in that: The switching mechanism comprises a movable ring (13), a conducting tube (14), a bent rod (15) and a sealing plug (16); the conducting tube (14) is fixedly sleeved inside the connecting cover (71), and one end is nested in the No. 2 port (73); the movable ring (13) is movably sleeved inside the connecting cover (71), and movably sleeved on the outside of the conducting tube (14); one end of the bent rod (15) is fixed on the movable ring (13), and the other end is fixed on the sealing plug (16); the sealing plug (16) faces the conducting tube (14), and the size of the sealing plug (16) is adapted to the size of the inner cavity of the conducting tube (14).

5. A coating drying equipment according to claim 4, characterized in that: The movable end of the electric push rod (12) passes through the connecting cover (71) and is fixedly connected to the movable ring (13), and the air outlet end of the air pump (11) is connected to the interior of the connecting cover (71).

6. A coating drying equipment according to claim 5, characterized in that: The top of the connecting member (3) is rotatably sleeved in the drying box (1) via a bearing, the placement table (8) is fixed to the bottom of the inner cavity of the drying box (1), the modified purge drying section (5) is symmetrically distributed on both sides of the placement table (8), the front of the drying box (1) is provided with an opening and closing door, and the power motor (2) is fixed to the top of the drying box (1) via a support.

7. A coating drying equipment according to claim 6, characterized in that: The auxiliary control component (17) comprises a connecting tube (171), a connecting tube (172), a movable plug (173), a second spring (174), a top rod (175) and a positioning rod (176); one end of the connecting tube (171) is fixedly connected to the outside of the pushing component (6) and is in communication with the inside of the pushing component (6); the connecting tube (172) is fixedly connected to the top of the connecting tube (171); the movable plug (173) is movably sleeved in the connecting tube (172); the second spring (174) is fixedly connected to the inside of the connecting tube (172) and its upper end is fixedly connected to the movable plug (173); the top rod (175) is fixedly connected to the top of the movable plug (173) and its upper end movably passes through the top of the connecting tube (172); and the positioning rod (176) is fixed in the connecting tube (172) and is located above the movable plug (173).

8. The coating drying equipment according to claim 7, characterized in that: The protrusion assembly (18) comprises a mounting ring (181), an arc-shaped protrusion (182), a hydraulic push rod (183) and a mounting frame (184); the arc-shaped protrusion (182) is fixedly connected to the bottom of the mounting ring (181); the hydraulic push rod (183) is fixed to the top of the drying box (1); one end of the mounting frame (184) is fixedly connected to the mounting ring (181), and the other end is fixedly connected to the movable end of the hydraulic push rod (183); the bottom of the arc-shaped protrusion (182) is movable through the drying box (1) and extends to the inside; the arc-shaped protrusion (182) is located on the rotation path of the top rod (175); and the two sides of the bottom of the arc-shaped protrusion (182) are symmetrical and are inclined surfaces.

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