A UV curing light source

Abstract

The present invention belongs to the technical field of ultraviolet light sources, and specifically is an ultraviolet curing light source, including an ultraviolet curing device, the ultraviolet curing device including a first protective shell, a cooling fan rotatably connected to the upper part of the first protective shell, an inner cavity is opened inside the first protective shell, and a plurality of heat sinks are fixedly connected to the bottom of the inner cavity of the first protective shell, and liquid medium is injected into a water storage bag through a water inlet, so as to weaken the intensity of ultraviolet light reaching the surface of the product, avoid quality problems such as surface cracks of the material caused by excessive ultraviolet intensity, and improve the appearance and performance of the product. Secondly, when the extrusion plate rotates counterclockwise, part of the medium at the edge will be squeezed to the middle part of the water storage bag, so that the water storage bag presents a state similar to a double-sided convex lens. Since the double-sided convex lens can gather ultraviolet rays together, it is convenient to strengthen the curing of locally thicker areas of the product, improve the overall performance of the material, and at the same time improve the adaptability of the device to different areas of the product.

Description

Technical Field

[0001] The invention belongs to the technical field of ultraviolet light sources, in particular to an ultraviolet curing light source. Background Art

[0002] UV curing light source is a special light source device that uses the energy of ultraviolet rays to prompt materials containing photosensitizers (also called photoinitiators) to undergo rapid chemical reactions, thereby achieving curing. This light source is widely used in multiple industrial fields, especially in scenarios where materials need to be cured quickly.

[0003] In the prior art, the UV curing light source is correctly installed on the light curing equipment, and the entire equipment needs to be placed on a flat and stable surface. After the installation is completed, the object to be cured needs to be placed within the irradiation range of the UV curing light source, and ensure that the surface of the object is clean and flat. At this time, the UV curing light source will be started to start curing the object.

[0004] There are still some problems in the actual application of the above scheme. Under the rated voltage, the light intensity of the UV curing light source remains unchanged, so the light intensity irradiated on the surface of the object will also remain unchanged. At this time, when the intensity of the UV curing lamp is higher than the curing intensity required by the material, it will cause the curing speed to be too fast, so that the material will be cured without complete reaction, which will affect the curing quality. At the same time, too high intensity will cause quality problems such as burning, discoloration, and cracks on the surface of the material, affecting the appearance and performance of the product. At this time, the added reciprocating weakening mechanism can only weaken the ultraviolet light reaching the surface of the object, and cannot strengthen the curing of locally thicker areas, which will cause incomplete curing of the internal area, which will affect the overall performance of the material, such as hardness, wear resistance, weather resistance, etc., and thus affect the service life and reliability of the product.

[0005] To this end, the present invention provides a UV curing light source. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: a UV curing light source described in the present invention includes a UV curing device, the UV curing device includes a first protective shell, a heat dissipation fan is rotatably connected to the upper part of the first protective shell, an inner cavity is opened inside the first protective shell, a plurality of heat sinks are fixedly connected to the bottom of the inner cavity of the first protective shell, an air nozzle is fixedly connected to the side wall of the lower part of the first protective shell, and a reciprocating weakening mechanism is arranged on the side of the UV curing device;

[0008] The reciprocating weakening mechanism includes a water storage bag, and a water inlet is arranged through the side of the water storage bag. Liquid medium is injected into the water storage bag through the water inlet to weaken the intensity of the ultraviolet lamp reaching the surface of the product.

[0009] Preferably, the reciprocating weakening mechanism includes a second protective shell, which is fixedly connected to the side wall of the first protective shell, and an inner cavity is opened inside the second protective shell. A first driving source is fixedly arranged on the top of the inner cavity of the second protective shell, and the output shaft of the first driving source is fixedly connected to a first rotating rod, and a first guide groove is opened on the outer ring surface of the first rotating rod.

[0010] Preferably, a guide moving block is slidably connected inside the first guide groove, a fixed column is arranged in the middle of the guide moving block, the fixed column is rotatably connected to the middle of the guide moving block, and a reciprocating cylinder is fixedly connected to one end of the fixed column away from the guide moving block.

[0011] Preferably, a limiting ring is provided on the outer ring surface of the reciprocating cylinder, the reciprocating cylinder slides inside the limiting ring, and the limiting ring is fixedly connected to the side wall of the inner cavity of the second protective shell.

[0012] Preferably, a blocking ring is fixedly connected to the top of the reciprocating cylinder, and a hollow rectangular frame is fixedly connected to one end of the reciprocating cylinder away from the blocking ring. A rectangular opening matching the size of the ultraviolet lamp irradiation opening is opened in the middle of the hollow rectangular frame.

[0013] Preferably, a water storage bag is fixedly connected to one side of the hollow rectangular frame close to a group of reciprocating cylinders, a water inlet is fixedly connected through the side wall of the water storage bag, and a water outlet is fixedly connected through the side of the water storage bag and one side of the air jet nozzle.

[0014] Preferably, a rack is fixedly connected to the side of the hollow rectangular frame, and limiting grooves are provided on both sides of the hollow rectangular frame. A first rotating shaft is slidably connected inside the limiting groove, one end of the first rotating shaft is fixedly connected to the first rotating shaft, and a second driving source is provided at the end of the first rotating shaft away from the rotating gear, the output shaft of the second driving source is fixedly connected to one end of the first rotating shaft, and the second driving source is slidably connected in another set of limiting grooves.

[0015] Preferably, a rotating extrusion mechanism for extrusion is arranged on the side of the reciprocating weakening mechanism, and the rotating extrusion mechanism includes an electric cylinder, a first sliding rod is slidably connected inside the electric cylinder, a linking rod is fixedly connected to one end of the first sliding rod away from the electric cylinder, and a second sliding rod is fixedly connected to one end of the linking rod away from the first sliding rod.

[0016] Preferably, the rotary extrusion mechanism further includes a support base, a second guide groove is formed at a lower portion of the support base, and the second sliding rod is slidably connected inside the second guide groove.

[0017] Preferably, the upper portion of the support base is rotatably connected to a second rotating shaft, the middle outer ring surface of the second rotating shaft is fixedly connected to a second rotating rod, the top of the second rotating rod is fixedly connected to an extrusion plate, the bottom of the second rotating rod is provided with a third guide groove, and the second sliding rod slides inside the third guide groove.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The UV curing light source described in the present invention drives the first rotating rod fixedly connected thereto to rotate by starting the first driving source. When the first rotating rod rotates, the guide moving block is driven to move along the first guide groove provided on the outer ring surface of the first rotating rod. At this time, the fixed column and the reciprocating cylinder are driven to move, and at the same time, they are guided by the limiting ring to perform reciprocating linear motion. When the reciprocating cylinder performs linear motion, the hollow rectangular frame is driven to move synchronously. When the hollow rectangular frame moves to a suitable position, the first rotating shaft is driven to rotate by starting the second driving source. At the same time, since the rotating gear at the other end of the first rotating shaft is meshed with the rack fixed on the side of the hollow rectangular frame, the first rotating shaft will also perform linear motion along the guide of the limiting groove while rotating. When the first rotating shaft moves to the end away from the water outlet along the guide of the limiting groove, the water storage bag will be fully unfolded. At this time, the liquid medium is injected into the water storage bag through the water inlet, so as to weaken the intensity of ultraviolet light reaching the surface of the product, avoid quality problems such as discoloration and cracks on the surface of the material caused by excessive ultraviolet intensity, and improve the appearance and performance of the product.

[0020] 2. The ultraviolet curing light source described in the present invention starts the electric cylinder, and the first sliding rod slides in the direction close to the electric cylinder, thereby driving the linkage rod fixedly connected to one end of the first sliding rod to move in the direction close to the electric cylinder, and at the same time, the second sliding rod is pulled to move along the guide of the second guide groove toward the electric cylinder. Since the second sliding rod also slides in the third guide groove opened at the lower part of the second rotating rod, the second rotating rod will be synchronously pulled to rotate counterclockwise around the second rotating axis in the middle. When the second rotating rod rotates counterclockwise, the extrusion plate at the top thereof will be driven to rotate synchronously. Since the height of the water storage bag when filled with liquid medium is slightly higher than the height of the extrusion plate, when the extrusion plate rotates counterclockwise, part of the medium on the edge will be squeezed to the middle part of the water storage bag, so that the water storage bag presents a state similar to a double-sided convex lens. Since the double-sided convex lens can gather ultraviolet rays together, it is convenient to strengthen the curing of the locally thicker areas of the product, and further enable the internal area to be completely cured, thereby improving the overall performance of the material and improving the adaptability of the device to different areas of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of the present invention;

[0023] Figure 2 It is a schematic structural diagram of the position relationship between the first protective shell and the air nozzle shown in the present invention;

[0024] Figure 3 It is a schematic diagram of the internal structure of the reciprocating weakening mechanism shown in the present invention;

[0025] Figure 4 It is a schematic diagram of the cross-sectional structure of a reciprocating cylinder shown in the present invention;

[0026] Figure 5 The present invention shows Figure 4 The enlarged structural diagram at A in the middle;

[0027] Figure 6 It is a schematic diagram of the positional relationship between the reciprocating weakening mechanism and the rotating extrusion mechanism shown in the present invention;

[0028] Figure 7 It is a schematic diagram of the three-dimensional structure of the rotary extrusion mechanism shown in the present invention;

[0029] Figure 8 The present invention shows Figure 7 The enlarged structural diagram at B in the middle;

[0030] Fig. 9 It is a schematic diagram of the three-dimensional structure when viewed from above shown in the present invention;

[0031] In the figure: 1, UV curing device; 101, first protective shell; 102, cooling fan; 103, heat sink; 104, air nozzle;

[0032] 2. Reciprocating weakening mechanism; 201. Second protective shell; 202. First driving source; 203. First rotating rod; 204. First guide groove; 205. Guide moving block; 206. Fixed column; 207. Reciprocating cylinder; 208. Limiting ring; 209. Blocking ring; 210. Hollow rectangular frame; 211. Water storage bag; 212. Water inlet; 213. Water outlet; 214. Rack; 215. Limiting groove; 216. First rotating shaft; 217. Rotating gear; 218. Second driving source;

[0033] 3. Rotating extrusion mechanism; 301. Electric cylinder; 302. First sliding rod; 303. Linking rod; 304. Second sliding rod; 305. Support base; 306. Second guide groove; 307. Second rotating shaft; 308. Second rotating rod; 309. Extrusion plate; 310. Third guide groove. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0035] Embodiment 1

[0036] like Figures 1 to 9 As shown, a UV curing light source according to an embodiment of the present invention comprises a UV curing device 1, wherein the UV curing device 1 comprises a first protective shell 101, a heat dissipation fan 102 is rotatably connected to the upper portion of the first protective shell 101, an inner cavity is provided inside the first protective shell 101, a plurality of heat sinks 103 are fixedly connected to the bottom of the inner cavity of the first protective shell 101, an air nozzle 104 is fixedly connected to the side wall of the lower portion of the first protective shell 101, and a reciprocating weakening mechanism 2 is provided on the side of the UV curing device 1;

[0037] The reciprocating weakening mechanism 2 includes a water storage bag 211, and a water inlet 212 is provided on the side of the water storage bag 211. Liquid medium is injected into the water storage bag 211 through the water inlet 212 to weaken the intensity of the ultraviolet light reaching the surface of the product.

[0038] Specifically, under rated voltage, the light intensity of the UV curing light source remains unchanged, so the light intensity irradiated on the surface of the object will also remain unchanged. At this time, when the intensity of the UV curing lamp is higher than the curing intensity required by the material, it will cause the curing speed to be too fast, so that the material will be cured without complete reaction, which will affect the curing quality. At the same time, too high intensity will cause quality problems such as burning, discoloration, and cracks on the surface of the material, affecting the appearance and performance of the product.

[0039] Therefore, the present invention solves this problem by setting a corresponding structure. The ultraviolet curing light source described in the present invention first installs the device on a fixed device, and then places the product to be cured directly under the ultraviolet lamp. At this time, the ultraviolet lamp is turned on. Since the ultraviolet lamp generates a large amount of heat during operation, starting the cooling fan 102 can dissipate heat for the ultraviolet lamp. At the same time, the heat sink 103 arranged inside assists in heat dissipation, further improving the heat dissipation effect, thereby making the entire device more stable, avoiding poor heat dissipation and affecting the service life of parts. However, since the equipment is at rated voltage, it is impossible to adjust the intensity of the ultraviolet light reaching the surface of the product, and excessive intensity will cause quality problems such as burning, discoloration, and cracks on the surface of the material, affecting the appearance and performance of the product. At this time, liquid medium can be injected into the water storage bag 211 through the water inlet 212, so that the ultraviolet light needs to pass through the liquid medium to irradiate the surface of the product, thereby weakening the intensity of the ultraviolet light reaching the surface of the product, avoiding quality problems of the product caused by excessive intensity, thereby improving the appearance and performance of the product.

[0040] Embodiment 2

[0041] like Figures 1 to 9 As shown in Comparative Example 1, another embodiment of the present invention is:

[0042] like Figure 3 As shown, the reciprocating weakening mechanism 2 of this embodiment includes a second protective shell 201, which is fixedly connected to the side wall of the first protective shell 101. An inner cavity is opened inside the second protective shell 201, and a first driving source 202 is fixedly arranged on the top of the inner cavity of the second protective shell 201. The first driving source 202 can be a servo motor. The output shaft of the first driving source 202 is fixedly connected to a first rotating rod 203, and a first guide groove 204 is opened on the outer ring surface of the first rotating rod 203.

[0043] Specifically, when the product to be cured is placed within the irradiation range of the ultraviolet lamp in the first protective shell 101, the first driving source 202 is started. When the first driving source 202 is started, its output shaft will rotate, and at the same time, the first rotating rod 203 will be driven to rotate. Since the first guide groove 204 is opened on the outer ring surface of the first rotating rod 203, the first guide groove 204 will also rotate synchronously. Since the opened first guide groove 204 is a closed annular guide groove, it is convenient for the device to perform reciprocating motion.

[0044] like Figure 4 and Figure 5 As shown, in this embodiment, a guide moving block 205 is slidably connected inside the first guide groove 204, a fixed column 206 is provided in the middle of the guide moving block 205, the fixed column 206 is rotatably connected to the middle of the guide moving block 205, and a reciprocating cylinder 207 is fixedly connected to the end of the fixed column 206 away from the guide moving block 205.

[0045] Specifically, when the first rotating rod 203 rotates with the first guide groove 204, since the second protective shell 201 is fixed to the side wall of the first protective shell 101, it will drive the guide moving block 205 sliding inside the first guide groove 204 to move along the guide of the annular guide groove during rotation, and at the same time drive the fixed column 206 to move downward, and at this time it will also drive the reciprocating column 207 to move downward synchronously, and the movement of the reciprocating column 207 will drive the remaining components to move downward.

[0046] like Figure 4 As shown, in this embodiment, a limit ring 208 is provided on the outer ring surface of the reciprocating cylinder 207, and the reciprocating cylinder 207 slides inside the limit ring 208. The limit ring 208 is fixedly connected to the side wall of the inner cavity of the second protective shell 201, and two groups of symmetrical guide blocks are provided on the outer ring surface of the reciprocating cylinder 207 to match the grooves opened on the inner ring surface of the limit ring 208.

[0047] Specifically, when the reciprocating cylinder 207 moves, since two sets of symmetrical guide blocks are set on the outer ring surface of the reciprocating cylinder 207 to adapt to the grooves opened on the inner ring surface of the limit ring 208, when the reciprocating cylinder 207 moves, it will perform reciprocating linear motion under the guidance of the limit ring 208.

[0048] like Figure 3 , Figure 4 and Fig. 9 As shown, in this embodiment, a blocking ring piece 209 is fixedly connected to the top of the reciprocating cylinder 207, and a hollow rectangular frame 210 is fixedly connected to the end of the reciprocating cylinder 207 away from the blocking ring piece 209. A rectangular opening matching the size of the ultraviolet lamp irradiation opening is opened in the middle of the hollow rectangular frame 210.

[0049] Specifically, when the reciprocating cylinder 207 moves linearly downward along the guide of the limit ring 208, it will drive the hollow rectangular frame 210 at the bottom to move downward synchronously. At this time, the blocking ring 209 set on the top of the reciprocating cylinder 207 will prevent the limit ring 208 from excessive movement and causing separation from the first rotating rod 203. At the same time, the rectangular opening in the middle of the hollow rectangular frame 210 allows ultraviolet light to irradiate the surface of the product, thereby performing curing work.

[0050] like Figure 2 and Figure 3 As shown, in this embodiment, a rack 214 is fixedly connected to the side of the hollow rectangular frame 210, and limiting grooves 215 are provided on both sides of the hollow rectangular frame 210. A first rotating shaft 216 is slidably connected inside the limiting groove 215. One end of the first rotating shaft 216 is fixedly connected to the first rotating shaft 216. A second driving source 218 is provided at the end of the first rotating shaft 216 away from the rotating gear 217. The second driving source 218 can be a servo motor. The output shaft of the second driving source 218 is fixedly connected to one end of the first rotating shaft 216, and the second driving source 218 is slidably connected in another set of limiting grooves 215.

[0051] Specifically, when the hollow rectangular frame 210 moves to a suitable position with the reciprocating cylinder 207, by starting the second driving source 218, the output shaft of the second driving source 218 will rotate with the first rotating shaft 216 fixed thereto, and at the same time drive the rotating gear 217 at the other end of the first rotating shaft 216 to rotate. Since the rotating gear 217 is meshed with the teeth of the rack 214, the rotating gear 217 will drive the first rotating shaft 216 and the second driving source 218 to move linearly along the guide direction of the limiting groove 215 away from the water outlet 213 while rotating. At this time, the first rotating shaft 216 will drive the water storage bag 211 to expand, thereby facilitating the subsequent work of injecting liquid medium into the water storage bag 211.

[0052] like Figure 1 and Figure 2 As shown, in this embodiment, a water storage bag 211 is fixedly connected to one side of the hollow rectangular frame 210 close to a group of reciprocating cylinders 207, a water inlet 212 is fixedly connected to the side wall of the water storage bag 211, and a water outlet 213 is fixedly connected to the side of the water storage bag 211 and the air nozzle 104.

[0053] Specifically, when the water storage bag 211 is fully expanded, liquid medium is injected into the water storage bag 211 through the water inlet 212. At this time, since the second driving source 218 stops working, and the water storage bag 211 is still in the expanded state, the injected liquid medium will be evenly distributed inside the water storage bag 211.

[0054] like Figure 6As shown, in this embodiment, a rotating extrusion mechanism 3 for extrusion is arranged on the side of the reciprocating weakening mechanism 2, and the rotating extrusion mechanism 3 includes an electric cylinder 301, and a first sliding rod 302 is slidably connected inside the electric cylinder 301, and an end of the first sliding rod 302 away from the electric cylinder 301 is fixedly connected to a linkage rod 303, and an end of the linkage rod 303 away from the first sliding rod 302 is fixedly connected to a second sliding rod 304.

[0055] Specifically, when the water storage bag 211 is filled with liquid medium and the local area of ​​the product needs to be cured, the electric cylinder 301 is started. At this time, the electric cylinder 301 will push the first sliding rod 302 to move toward the direction close to the electric cylinder 301, and at the same time push the linkage rod 303 to move toward the direction close to the electric cylinder 301. At this time, the second sliding rod 304 fixed on the end of the linkage rod 303 away from the first sliding rod 302 will also move synchronously. The setting of the linkage rod 303 can provide a greater pulling force for the second sliding rod 304.

[0056] like Figure 7 As shown, the rotary extrusion mechanism 3 of this embodiment further includes a support base 305 , a second guide groove 306 is formed at the lower portion of the support base 305 , and the second sliding rod 304 is slidably connected inside the second guide groove 306 .

[0057] Specifically, when the second sliding rod 304 is pulled by the linkage rod 303 , the second sliding rod 304 will move synchronously along the second guide groove 306 provided at the lower portion of the support base 305 , and the second guide groove 306 can guide the second sliding rod 304 .

[0058] like Figure 7 and Figure 8 As shown, in this embodiment, the upper part of the support base 305 is rotatably connected to the second rotating shaft 307, the middle outer ring surface of the second rotating shaft 307 is fixedly connected to the second rotating rod 308, the top of the second rotating rod 308 is fixedly connected to the extrusion plate 309, and the bottom of the second rotating rod 308 is provided with a third guide groove 310, and the second sliding rod 304 slides inside the third guide groove 310.

[0059] Specifically, when the second sliding rod 304 moves along the guide of the second guide groove 306 toward the electric cylinder 301, since the second sliding rod 304 also slides in the third guide groove 310 opened at the lower part of the second rotating rod 308, the second rotating rod 308 will be synchronously pulled to rotate counterclockwise around the second rotating axis 307 in the middle. When the second rotating rod 308 rotates counterclockwise, the extrusion plate 309 on the top will be driven to rotate synchronously. Since the height of the water storage bag 211 when filled with liquid medium is slightly higher than the height of the extrusion plate 309, when the extrusion plate 309 rotates counterclockwise, part of the medium on the edge will be squeezed to the middle part of the water storage bag 211, so that the water storage bag 211 presents a state similar to a double-sided convex lens. Since the double-sided convex lens can gather ultraviolet rays together, it is convenient to further strengthen the curing of local areas of the product.

[0060] Working principle: when the product to be cured is placed within the irradiation range of the ultraviolet lamp in the first protective shell 101, the first driving source 202 is started. When the first driving source 202 is started, its output shaft will rotate, and at the same time, it will drive the first rotating rod 203 to rotate. Since the first guide groove 204 is opened on the outer ring surface of the first rotating rod 203, the first guide groove 204 will also rotate synchronously. Since the opened first guide groove 204 is a closed annular guide groove, it is convenient for the device to perform reciprocating motion.

[0061] When the first rotating rod 203 rotates with the first guide groove 204, since the second protective shell 201 is fixed to the side wall of the first protective shell 101, it will drive the guide moving block 205 sliding inside the first guide groove 204 to move along the guide of the annular guide groove during rotation, and at the same time drive the fixed column 206 in the middle to move downward, and at this time it will also drive the reciprocating cylinder 207 to move downward synchronously, and the movement of the reciprocating cylinder 207 will drive the remaining parts to move downward.

[0062] When the reciprocating cylinder 207 moves, since two sets of symmetrical guide blocks are arranged on the outer ring surface of the reciprocating cylinder 207 and match the grooves provided on the inner ring surface of the limiting ring 208, when the reciprocating cylinder 207 moves, it will perform reciprocating linear motion under the guidance of the limiting ring 208.

[0063] While the reciprocating cylinder 207 moves linearly downward along the guidance of the limiting ring 208, it will drive the hollow rectangular frame 210 at the bottom to move downward synchronously. At this time, the blocking ring 209 set on the top of the reciprocating cylinder 207 will prevent the limiting ring 208 from excessive movement and separation from the first rotating rod 203. At the same time, the rectangular opening in the middle of the hollow rectangular frame 210 allows ultraviolet light to irradiate the surface of the product, thereby performing curing work.

[0064] At this time, when the hollow rectangular frame 210 moves to a suitable position with the reciprocating cylinder 207, by starting the second driving source 218, the output shaft of the second driving source 218 will rotate with the first rotating shaft 216 fixed thereto, and at the same time drive the rotating gear 217 at the other end of the first rotating shaft 216 to rotate. Since the rotating gear 217 is meshed with the teeth of the rack 214, the rotating gear 217 will drive the first rotating shaft 216 and the second driving source 218 to move in a straight line along the guide direction of the limiting groove 215 away from the water outlet 213 while rotating. At this time, the first rotating shaft 216 will drive the water storage bag 211 to expand, thereby facilitating the subsequent work of injecting liquid medium into the water storage bag 211.

[0065] When the water storage bag 211 is fully expanded, liquid medium is injected into the water storage bag 211 through the water inlet 212. At this time, since the second driving source 218 stops working, and the water storage bag 211 is still in the expanded state, the injected liquid medium will be evenly distributed inside the water storage bag 211.

[0066] When the water storage bag 211 is filled with liquid medium and the local area of ​​the product needs to be cured, the electric cylinder 301 is started. At this time, the electric cylinder 301 will push the first sliding rod 302 to move toward the electric cylinder 301, and at the same time push the linkage rod 303 to move toward the electric cylinder 301. At this time, the second sliding rod 304 fixed on the end of the linkage rod 303 away from the first sliding rod 302 will also move synchronously. The setting of the linkage rod 303 can provide a greater pulling force for the second sliding rod 304.

[0067] When the second sliding rod 304 is pulled by the linkage rod 303 , the second sliding rod 304 will move synchronously along the second guide groove 306 provided at the lower part of the support base 305 . The second guide groove 306 can guide the second sliding rod 304 .

[0068] When the second sliding rod 304 moves along the guide of the second guide groove 306 toward the electric cylinder 301, since the second sliding rod 304 also slides in the third guide groove 310 opened at the lower part of the second rotating rod 308, the second rotating rod 308 will be synchronously pulled to rotate counterclockwise around the second rotating axis 307 in the middle. When the second rotating rod 308 rotates counterclockwise, the extrusion plate 309 on the top will be driven to rotate synchronously. Since the height of the water storage bag 211 when filled with liquid medium is slightly higher than the height of the extrusion plate 309, when the extrusion plate 309 rotates counterclockwise, part of the medium on the edge will be squeezed to the middle part of the water storage bag 211, so that the water storage bag 211 presents a state similar to a double-sided convex lens. Since the double-sided convex lens can gather ultraviolet rays together, it is convenient to further strengthen the curing of local areas of the product.

[0069] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A UV curing light source, characterized in that: The ultraviolet curing device (1) comprises a first protective shell (101), the upper part of the first protective shell (101) is rotatably connected to a heat dissipation fan (102), an inner cavity is provided inside the first protective shell (101), a plurality of heat dissipation fins (103) are fixedly connected to the bottom of the inner cavity of the first protective shell (101), an air nozzle (104) is fixedly connected to the side wall of the lower part of the first protective shell (101), and a reciprocating weakening mechanism (2) is provided on the side of the ultraviolet curing device (1); The reciprocating weakening mechanism (2) comprises a water storage bag (211), a water inlet (212) is provided through the side of the water storage bag (211), and a liquid medium is injected into the water storage bag (211) through the water inlet (212) to weaken the intensity of the ultraviolet light reaching the surface of the product; The reciprocating weakening mechanism (2) comprises a second protective shell (201), the second protective shell (201) is fixedly connected to the side wall of the first protective shell (101), an inner cavity is provided inside the second protective shell (201), a first driving source (202) is fixedly arranged at the top of the inner cavity of the second protective shell (201), an output shaft of the first driving source (202) is fixedly connected to a first rotating rod (203), and a first guide groove (204) is provided on the outer annular surface of the first rotating rod (203); A guide moving block (205) is slidably connected inside the first guide groove (204), a fixed column (206) is provided in the middle of the guide moving block (205), the fixed column (206) is rotatably connected to the middle of the guide moving block (205), and a reciprocating column (207) is fixedly connected to one end of the fixed column (206) away from the guide moving block (205); A limiting ring (208) is provided on the outer ring surface of the reciprocating cylinder (207), the reciprocating cylinder (207) slides inside the limiting ring (208), and the limiting ring (208) is fixedly connected to the side wall of the inner cavity of the second protective shell (201); A blocking ring sheet (209) is fixedly connected to the top of the reciprocating cylinder (207), and a hollow rectangular frame (210) is fixedly connected to one end of the reciprocating cylinder (207) away from the blocking ring sheet (209), wherein a rectangular opening matching the size of the ultraviolet lamp irradiation opening is provided in the middle of the hollow rectangular frame (210); A water storage bag (211) is fixedly connected to one side of the hollow rectangular frame (210) close to a group of reciprocating cylinders (207), and a water inlet (212) is fixedly connected to the side wall of the water storage bag (211); A rack (214) is fixedly connected to the side of the hollow rectangular frame (210), and limiting grooves (215) are provided on both sides of the hollow rectangular frame (210). A first rotating shaft (216) is slidably connected inside the limiting groove (215), and one end of the first rotating shaft (216) is fixedly connected to the first rotating shaft (216), and a second driving source (218) is provided at one end of the first rotating shaft (216) away from the rotating gear (217), and an output shaft of the second driving source (218) is fixedly connected to one end of the first rotating shaft (216), and the second driving source (218) is slidably connected in another set of limiting grooves (215).

2. The UV curing light source according to claim 1, characterized in that: A rotating extrusion mechanism (3) for extrusion is arranged on the side of the reciprocating weakening mechanism (2), and the rotating extrusion mechanism (3) comprises an electric cylinder (301), a first sliding rod (302) is slidably connected inside the electric cylinder (301), a linkage rod (303) is fixedly connected to one end of the first sliding rod (302) away from the electric cylinder (301), a second sliding rod (304) is fixedly connected to one end of the linkage rod (303) away from the first sliding rod (302), and a water outlet (213) is fixedly connected to the side of the water storage bag (211) and the air nozzle (104) through the water storage bag (211).

3. The UV curing light source according to claim 2, characterized in that: The rotary extrusion mechanism (3) further comprises a support base (305), a second guide groove (306) is provided at the lower portion of the support base (305), and the second sliding rod (304) is slidably connected inside the second guide groove (306).

4. The UV curing light source according to claim 3, characterized in that: The upper part of the support base (305) is rotatably connected to a second rotating shaft (307); the middle outer ring surface of the second rotating shaft (307) is fixedly connected to a second rotating rod (308); the top of the second rotating rod (308) is fixedly connected to an extrusion plate (309); the bottom of the second rotating rod (308) is provided with a third guide groove (310); and the second sliding rod (304) slides inside the third guide groove (310).

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