A demolding agent spraying device before injection molding

Abstract

The application relates to the technical field of spraying devices, and discloses a demolding agent spraying device used before injection molding, which comprises a bottom plate, a liquid storage tank installed on the top of the bottom plate, a spraying part installed on the liquid storage tank, a fluid stirring part arranged on the inner wall of the liquid storage tank, a plurality of dredging parts arranged in a circumferential array in the liquid storage tank, and a plurality of anti-adhesion parts arranged in a circumferential array in the liquid storage tank. The fluid stirring part is arranged, so that the problem that the existing spraying device is difficult to realize full-area circulating liquid spraying and stirring in the tank during use, and is prone to causing uneven mixing degree of the demolding agent in different areas, liquid layering and precipitation and caking, thereby affecting spraying uniformity and further affecting demolding agent spraying quality and injection molding production effect is solved.

Description

Technical Field

[0001] This invention relates to the field of spraying equipment technology, specifically to a spraying device for applying a release agent before injection molding. Background Technology

[0002] With the rapid development of the injection molding industry, the application of precision injection molding technology is becoming more and more widespread. As an indispensable auxiliary material in injection molding production, release agent can effectively prevent injection molded products from sticking to the mold, ensuring the molding quality and production efficiency of injection molded products. The uniformity and cleanliness of the release agent liquid directly determine the spraying effect and the quality of injection molded products. The performance requirements of spraying equipment are constantly increasing. Therefore, high-quality spraying equipment is needed to complete the spraying operation before injection molding.

[0003] However, in the process of using existing spraying equipment, the stirring structure is mostly fixed in position and fixed in range, which makes it difficult to achieve full-area circulation and stirring of the liquid in the tank. This can easily cause uneven mixing of the release agent in different areas, resulting in liquid stratification, sedimentation and clumping, which affects the uniformity of spraying and thus affects the quality of release agent spraying and the injection molding production effect. Summary of the Invention

[0004] The purpose of this invention is to provide a release agent spraying device before injection molding. By setting up a fluid stirring section, it solves the problem that existing spraying devices often have a fixed stirring structure in a fixed position and range, which makes it difficult to achieve full-area circulation and stirring of the liquid in the tank. This can easily lead to uneven mixing of the release agent in different areas, resulting in liquid stratification, sedimentation and clumping, which affects the uniformity of spraying and consequently the quality of the release agent spraying and the injection molding production effect.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a mold release agent spraying device before injection molding, comprising a base plate and a liquid storage tank mounted on top of the base plate, and further comprising: a spraying section mounted on the liquid storage tank; a fluid stirring section disposed on the inner wall of the liquid storage tank; a plurality of unblocking sections arranged in a circumferential array within the liquid storage tank; and a plurality of anti-adhesion sections arranged in a circumferential array within the liquid storage tank; the fluid stirring section includes a spraying assembly disposed on the inner wall of the liquid storage tank; and a driving assembly mounted on the liquid storage tank; the spraying assembly includes a support frame fixedly connected to the inner wall at the bottom of the liquid storage tank. A cylindrical box is fixedly connected to the support frame. A circular sliding plate is slidably connected to the inner wall of the cylindrical box. Several L-shaped pipes are connected to the outer wall of the cylindrical box. An annular pipe is connected to the top of the L-shaped pipes. Several spray nozzles are opened at the bottom of the annular pipe. A guide is provided inside the liquid storage tank. Four L-shaped pipes are arranged in a circumferential array. The guide includes a rectangular rod fixedly connected to the top of the circular sliding plate. The top of the rectangular rod slides through the support frame. The top of the rectangular rod is fixedly connected to the bottom of the rectangular box. Several one-way valve mechanisms are connected to the outer wall of the cylindrical box. The one-way valve mechanisms only allow liquid in the bottom plate to flow into the cylindrical box.

[0006] Furthermore, the drive assembly includes a motor fixedly connected to the top of the storage tank. The output shaft of the motor is fixedly connected to a rotating shaft via a coupling. A rectangular box is provided on the outer wall of the rotating shaft. Two inclined discs are fixedly connected to the outer wall of the rotating shaft. A protruding rod is provided between the two inclined discs. The side of the protruding rod near the inner wall of the rectangular box is fixedly connected to the inner wall of the rectangular box. A circular frame is fixedly connected to the outer wall of the cylindrical box. The outer wall of the rotating shaft contacts the inner wall of the rectangular box. The outer wall of the protruding rod slides in contact with the outer walls of the two inclined discs. The bottom of the circular frame is fixedly connected to the top of the slotted fixing rod.

[0007] Furthermore, the spraying unit includes a liquid outlet pipe connected to the outer wall of the liquid storage tank, a hydraulic pump connected to the right side of the liquid outlet pipe, a hose connected to the right side of the hydraulic pump, an atomizing nozzle connected to the hose, and a feed pipe connected to the base plate; the hydraulic pump is fixed to the top of the base plate by a bracket.

[0008] Furthermore, the unblocking section includes an unblocking assembly mounted on a support frame; a transmission assembly mounted on a drive assembly; the unblocking assembly includes two spring dampers fixedly connected to the top of the support frame, a support block fixedly connected to the top of the two spring dampers, a plurality of ejector pins fixedly connected to the top of the support block, and a protective component provided on the support block; the plurality of ejector pins are respectively located below a plurality of corresponding spray nozzles, and the protective component includes a telescopic protective cover fixedly connected to the bottom of the support block, the bottom of the telescopic protective cover being fixedly connected to the top of the support frame; both spring dampers are located inside the telescopic protective cover.

[0009] Furthermore, the transmission assembly includes a protrusion one fixedly connected to the outer wall of the support block, and a protrusion two fixedly connected to the right side of the slotted fixing rod; the protrusion two is adapted to the protrusion one, specifically, the protrusion two will periodically squeeze the protrusion one and make it rise during the circumferential motion of the slotted fixing rod.

[0010] Furthermore, the anti-adhesion part includes a slotted fixing rod disposed in the base plate. A plurality of spring dampers are fixedly connected to the inner wall of the slotted fixing rod. A cleaning rod is fixedly connected to the left side of the plurality of spring dampers. A rectangular frame is fixedly connected to the right side of the cleaning rod. The outer wall of the rectangular frame is slidably connected to the inner wall of the slotted fixing rod. The left side of the cleaning rod is in contact with the inner wall of the liquid storage tank.

[0011] The present invention has the following beneficial effects: (1) The present invention sets up a fluid stirring part, which is powered by a drive component. The circular slide plate is driven to slide back and forth through a rectangular box and a rectangular rod. The continuous suction and pressurized delivery of the release agent is achieved in conjunction with a one-way valve mechanism. Then, the release agent is circulated and sprayed in the tank through an L-shaped pipe, annular pipe and spray nozzle. This avoids the release agent from settling, stratifying, settling and clumping, and ensures the uniformity and stability of subsequent atomized spraying. It effectively improves the release effect of injection molding and avoids defects such as release residue and sticking due to uneven liquid. (2) The present invention sets up a dredging part, which operates in linkage with the device itself. The second protrusion of the transmission component moves in a circular motion with the slotted fixing rod, periodically squeezing the first protrusion, which drives the support block and the ejector pin of the dredging component to make periodic lifting and lowering movements, and reciprocatingly pushing and dredging each spray nozzle. At the same time, it is equipped with a telescopic protective cover and a protective spring damper to clean up the mold release agent clumps and impurities accumulated at the spray nozzle in time, continuously prevent the spray nozzle from being blocked, ensure the continuous and smooth operation of the fluid mixing part, and improve the stability and efficiency of the device operation. (3) By setting an anti-adhesion part, the present invention moves in a circular motion in sync with the circular frame, driving the slotted fixing rod and cleaning rod to continuously rotate and wipe along the inner wall of the storage tank. Combined with the elastic sliding buffer structure of the spring damper and the rectangular frame, it can not only adhere to the tank wall to completely scrape off the attached and residual release agent, but also prevent the liquid from adhering to the tank wall, accumulating and drying, falling and blocking the spray nozzle. This further ensures the continuous and smooth operation of the fluid stirring part, and improves the stability and efficiency of the device operation.

[0012] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the front cross-sectional structure of the present invention; Figure 3 This is a partial structural schematic diagram of the fluid stirring part of the present invention; Figure 4 This is a partial cross-sectional view of the fluid stirring section of the present invention; Figure 5 This is a partial cross-sectional view of the driving component of the present invention; Figure 6 This is a partial cross-sectional view of the anti-adhesion part of the present invention; Figure 7 For the present invention Figure 6 A magnified structural diagram of A in the middle; Figure 8 This is a partial cross-sectional view of the unblocking section of the present invention; Figure 9 This is a schematic diagram of the explosion structure of the anti-adhesion part of the present invention.

[0015] The attached diagram lists the components represented by each number as follows: In the diagram: 1. Spraying section; 111. Base plate; 112. Liquid storage tank; 113. Liquid outlet pipe; 114. Hydraulic pump; 115. Hoses; 116. Atomizing nozzle; 117. Feed pipe; 2. Fluid mixing section; 21. Spraying assembly; 211. Support frame; 212. Cylindrical box; 213. Circular slide plate; 214. L-shaped pipe; 215. Annular pipe; 216. Spray nozzle; 217. Rectangular rod; 218. One-way valve mechanism; 22. Drive assembly; 221 1. Motor; 222. Shaft; 223. Rectangular box; 224. Inclined disc; 225. Protruding rod; 226. Circular frame; 3. Unblocking section; 31. Unblocking assembly; 311. Spring damper one; 312. Support block; 313. Pin; 314. Telescopic protective cover; 32. Transmission assembly; 321. Protrusion one; 322. Protrusion two; 4. Anti-adhesion section; 411. Slotted fixing rod; 412. Spring damper two; 413. Cleaning rod; 414. Rectangular frame. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Please see Figures 1-9 As shown, the present invention is a mold release agent spraying device before injection molding, including a base plate 111 and a liquid storage tank 112 installed on the top of the base plate 111, and further including: a spraying part 1, which is installed on the liquid storage tank 112; a fluid stirring part 2, which is disposed on the inner wall of the liquid storage tank 112; a clearing part 3, which is provided in a plurality of units arranged in a circumferential array inside the liquid storage tank 112; and an anti-adhesion part 4, which is provided in a plurality of units. Several anti-adhesion parts 4 are arranged in a circumferential array inside the liquid storage tank 112. The spraying part 1 includes a liquid outlet pipe 113 connected to the outer wall of the liquid storage tank 112. A hydraulic pump 114 is connected to the right side of the liquid outlet pipe 113. A hose 115 is connected to the right side of the hydraulic pump 114. An atomizing nozzle 116 is connected to the hose 115. A feed pipe 117 is connected to the base plate 111. The hydraulic pump 114 is fixed to the top of the base plate 111 by a bracket.

[0018] The fluid stirring unit 2 includes a spraying assembly 21 disposed on the inner wall of the storage tank 112; and a driving assembly 22 mounted on the storage tank 112. The spraying assembly 21 includes a support frame 211 fixedly connected to the inner wall of the bottom of the storage tank 112. A cylindrical box 212 is fixedly connected to the support frame 211. A circular sliding plate 213 is slidably connected to the inner wall of the cylindrical box 212. A plurality of L-shaped pipes 214 are connected to the outer wall of the cylindrical box 212, and the tops of the L-shaped pipes 214 are connected to... An annular pipe 215 has several spray nozzles 216 at its bottom, and a guide is installed inside the storage tank 112; four L-shaped pipes 214 are arranged in a circumferential array, and the guide includes a rectangular rod 217 fixedly connected to the top of a circular slide plate 213, the top of the rectangular rod 217 slidingly passing through a support frame 211, and the top of the rectangular rod 217 fixedly connected to the bottom of a rectangular box 223; several one-way valve mechanisms 218 are connected to the outer wall of the cylindrical box 212; the several one-way valve mechanisms 218 only Liquid in the base plate 111 is allowed to flow into the cylindrical box 212. The drive assembly 22 includes a motor 221 fixedly connected to the top of the storage tank 112. The output shaft of the motor 221 is fixedly connected to a rotating shaft 222 via a coupling. A rectangular box 223 is provided on the outer wall of the rotating shaft 222. Two inclined discs 224 are fixedly connected to the outer wall of the rotating shaft 222. A protruding rod 225 is provided between the two inclined discs 224. The side of the protruding rod 225 closest to the inner wall of the rectangular box 223 is fixedly connected to the inner wall of the rectangular box 223. The cylindrical box 212... A circular frame 226 is fixedly connected to the outer wall; the outer wall of the rotating shaft 222 contacts the inner wall of the rectangular box 223, the outer wall of the protruding rod 225 slides in contact with the outer walls of the two inclined discs 224, and the bottom of the circular frame 226 is fixedly connected to the top of the slotted fixing rod 411. By setting the fluid stirring part 2, the liquid is circulated and stirred inside the tank, which avoids the release agent from settling, separating, settling and clumping, and ensures the uniformity and stability of subsequent atomized spraying, effectively improving the injection molding release effect and avoiding defects such as release residue and sticking due to uneven liquid.

[0019] The unblocking unit 3 includes an unblocking component 31, which is mounted on a support frame 211; and a transmission component 32, which is mounted on a drive component 22. The unblocking component 31 includes two spring dampers 311 fixedly connected to the top of the support frame 211. A support block 312 is fixedly connected to the top of the two spring dampers 311. A plurality of ejector pins 313 are fixedly connected to the top of the support block 312. A protective component is provided on the support block 312. The plurality of ejector pins 313 are respectively located below a plurality of corresponding spray nozzles 216. The protective component includes a telescopic protective cover 314 fixedly connected to the bottom of the support block 312. The bottom of the telescopic protective cover 314 is flush with the support frame 211. The top is fixedly connected; both spring dampers 311 are located inside the telescopic protective cover 314. The transmission component 32 includes a protrusion 321 fixedly connected to the outer wall of the support block 312. A protrusion 322 is fixedly connected to the right side of the slotted fixing rod 411. The protrusion 322 is adapted to the protrusion 321. Specifically, the protrusion 322 will periodically squeeze the protrusion 321 and make it rise during the circumferential motion of the slotted fixing rod 411. By setting the unblocking part 3, the mold release agent clumps and impurities accumulated at the spray nozzle 216 can be cleaned in time, continuously preventing the spray nozzle 216 from being blocked, ensuring the continuous and smooth operation of the fluid stirring part 2, and improving the stability and efficiency of the device operation.

[0020] The anti-adhesion part 4 includes a slotted fixing rod 411 installed in the base plate 111. Several spring dampers 412 are fixedly connected to the inner wall of the slotted fixing rod 411. A cleaning rod 413 is fixedly connected to the left side of the several spring dampers 412. A rectangular frame 414 is fixedly connected to the right side of the cleaning rod 413. The outer wall of the rectangular frame 414 is slidably connected to the inner wall of the slotted fixing rod 411. The left side of the cleaning rod 413 contacts the inner wall of the liquid storage tank 112. By setting the anti-adhesion part 4, it can adhere to the tank wall and completely scrape off the attached and residual release agent, preventing the liquid from adhering to the tank wall, accumulating, drying, and falling off to block the spray nozzle 216. This further ensures the continuous and smooth operation of the fluid stirring part 2 and improves the stability and efficiency of the device operation.

[0021] In use, firstly, release agent liquid is injected into the storage tank 112 through the feed pipe 117 on the base plate 111 to complete the raw material filling. After starting the motor 221 of the drive assembly 22, the motor 221 drives the rotating shaft 222 to rotate continuously through the coupling. The rotating shaft 222 drives the two inclined discs 224 to rotate, squeezing the convex rod 225 that slides in contact with it, and driving the rectangular box 223 to perform reciprocating lifting and lowering motion. The rectangular box 223 drives the rectangular rod 217 fixed at the bottom to move back and forth synchronously, pulling the circular slide plate 213 inside the cylindrical box 212 to slide upward. In conjunction with the one-way valve mechanism 218 that only allows liquid to enter, the liquid in the storage tank 112 is continuously drawn into the cylindrical box 212. Then the circular slide plate 213 is pressed down and then transported to the annular pipe 215 through the four circumferentially arrayed L-shaped pipes 214. Finally, it is sprayed out from the multiple spray nozzles 216 at the bottom of the annular pipe 215, realizing the circulation spraying and stirring of the release agent inside the storage tank 112, ensuring that the liquid is evenly mixed. As the rotating shaft 222 rotates, the circular frame 226 on the outer wall of the cylindrical box 212 rotates synchronously, driving the slotted fixing rod 411 fixed at the bottom to make a circular motion. The slotted fixing rod 411 drives the internal rectangular frame 414, the second spring damper 412 and the cleaning rod 413 to rotate in a circular motion as a whole. The left side of the cleaning rod 413 adheres to the inner wall of the liquid storage tank 112 and continuously wipes. The second spring damper 412 provides elastic buffering to avoid rigid friction and achieve the anti-adhesion cleaning function. During the rotation of the slotted fixing rod 411, the second protrusion 322 on its right side periodically presses the first protrusion 321 on the outer wall of the support block 312, driving the support block 312 to compress the two spring dampers 311 at the bottom and periodically rise and fall. The multiple ejector pins 313 on the top of the support block 312 push the corresponding spray nozzles 216 back and forth to clear the spray nozzles 216 and prevent them from being blocked. After the liquid is stirred, the hydraulic pump 114 of the spraying unit 1 is started. The uniform release agent in the storage tank 112 is discharged through the outlet pipe 113, pressurized by the hydraulic pump 114 and flows into the hose 115, and finally atomized and sprayed out by the atomizing nozzle 116 to complete the release agent spraying operation before injection molding.

[0022] It should be noted that the control of the hydraulic pump 114 and the motor 221 in this application can both be achieved by using a program set in the control panel and inputting relevant parameters as needed for automated control. This control method can be implemented using existing technologies, such as PLC.

[0023] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A mold release agent spraying device before injection molding, comprising a base plate (111) and a liquid storage tank (112) mounted on top of the base plate (111), characterized in that, Also includes: Spraying section (1), which is mounted on liquid storage tank (112); A fluid stirring unit (2) is provided on the inner wall of the storage tank (112); The unblocking section (3) is provided in a plurality of units, and the plurality of unblocking sections (3) are arranged in a circular array inside the liquid storage tank (112); Anti-adhesion part (4), a plurality of anti-adhesion parts (4) are provided, and the plurality of anti-adhesion parts (4) are arranged in a circumferential array inside the liquid storage tank (112); The fluid stirring unit (2) includes a liquid spraying assembly (21), which is disposed on the inner wall of the liquid storage tank (112); and A drive assembly (22) is mounted on a liquid storage tank (112); The spraying assembly (21) includes a support frame (211) fixedly connected to the inner wall of the bottom of the storage tank (112). A cylindrical box (212) is fixedly connected to the support frame (211). A circular sliding plate (213) is slidably connected to the inner wall of the cylindrical box (212). A plurality of L-shaped pipes (214) are connected to the outer wall of the cylindrical box (212). An annular pipe (215) is connected to the top of the plurality of L-shaped pipes (214). A plurality of spray nozzles (216) are opened at the bottom of the annular pipe (215). A guide is provided inside the storage tank (112). Among them, four L-shaped pipes (214) are arranged in a circular array.

2. The mold release agent spraying device according to claim 1, characterized in that, The spraying unit (1) includes a liquid outlet pipe (113) connected to the outer wall of the liquid storage tank (112), a hydraulic pump (114) connected to the right side of the liquid outlet pipe (113), a hose (115) connected to the right side of the hydraulic pump (114), an atomizing nozzle (116) connected to the hose (115), and a feed pipe (117) connected to the base plate (111). The hydraulic pump (114) is fixed to the top of the base plate (111) by a bracket.

3. The mold release agent spraying device according to claim 1, characterized in that, The unblocking section (3) includes an unblocking component (31), which is mounted on a support frame (211); and A transmission assembly (32) is mounted on a drive assembly (22).

4. The device for spraying a release agent before injection molding according to claim 1, characterized in that, The anti-adhesion part (4) includes a slotted fixing rod (411) set in the base plate (111). A plurality of spring dampers (412) are fixedly connected to the inner wall of the slotted fixing rod (411). A cleaning rod (413) is fixedly connected to the left side of the plurality of spring dampers (412). A rectangular frame (414) is fixedly connected to the right side of the cleaning rod (413). The outer wall of the rectangular frame (414) is slidably connected to the inner wall of the slotted fixing rod (411). The left side of the cleaning rod (413) is in contact with the inner wall of the liquid storage tank (112).

5. The mold release agent spraying device according to claim 1, characterized in that, The drive assembly (22) includes a motor (221) fixedly connected to the top of the storage tank (112). The output shaft of the motor (221) is fixedly connected to a rotating shaft (222) via a coupling. A rectangular box (223) is provided on the outer wall of the rotating shaft (222). Two inclined discs (224) are fixedly connected to the outer wall of the rotating shaft (222). A protruding rod (225) is provided between the two inclined discs (224). The side of the protruding rod (225) near the inner wall of the rectangular box (223) is fixedly connected to the inner wall of the rectangular box (223). A circular frame (226) is fixedly connected to the outer wall of the cylindrical box (212). The outer wall of the rotating shaft (222) is in contact with the inner wall of the rectangular box (223), the outer wall of the protruding rod (225) is in sliding contact with the outer walls of the two inclined discs (224), and the bottom of the circular frame (226) is fixedly connected to the top of the slotted fixing rod (411).

6. The mold release agent spraying device according to claim 3, characterized in that, The unblocking component (31) includes two spring dampers (311) fixedly connected to the top of the support frame (211). A support block (312) is fixedly connected to the top of the two spring dampers (311). A plurality of pins (313) are fixedly connected to the top of the support block (312). A protective component is provided on the support block (312). Among them, several ejector pins (313) are located below several corresponding liquid spray nozzles (216).

7. The mold release agent spraying device according to claim 3, characterized in that, The transmission assembly (32) includes a protrusion 1 (321) fixedly connected to the outer wall of the support block (312), and a protrusion 2 (322) fixedly connected to the right side of the slotted fixing rod (411). Among them, bump 2 (322) is adapted to bump 1 (321).

8. The device for spraying a release agent before injection molding according to claim 1, characterized in that, The guide includes a rectangular rod (217) fixedly connected to the top of the circular slide plate (213). The top of the rectangular rod (217) slides through the support frame (211). The top of the rectangular rod (217) is fixedly connected to the bottom of the rectangular box (223). The outer wall of the cylindrical box (212) is provided with several one-way valve mechanisms (218). Among them, several one-way valve mechanisms (218) only allow liquid in the base plate (111) to flow into the cylindrical box (212).

9. The mold release agent spraying device according to claim 5, characterized in that, The protective component includes a telescopic protective cover (314) fixedly connected to the bottom of the support block (312), and the bottom of the telescopic protective cover (314) is fixedly connected to the top of the support frame (211). Both spring dampers (311) are located inside the telescopic protective cover (314).

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