Injection mold release agent circulating spraying device

Abstract

The utility model relates to injection mold field especially injection mold release agent circulating spraying device, including the horizontal bearing mesa of setting and the support leg of being fixed in the bottom of bearing mesa, the surface of bearing mesa is opened and has the track recess that extends along mesa lengthways, is equipped with linear drive unit and the guide mechanism that links with linear drive unit in track recess recess, both common load rigid column movable along the groove axial direction, the top of rigid column is equipped with the mainboard that forms the cavity inside, is provided with release agent injection module in the cavity, release agent injection module includes spraying unit and drive transmission unit reciprocal displacement of spraying unit, spraying unit aims at lower mould forming surface and upper mould forming surface respectively, hydraulic cylinder drives upper mould to carry out vertical to open and close die movement, the utility model discloses through the combination of spraying unit and transmission unit, realizes the dynamic comprehensive even spraying of mould forming surface, has improved quality and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of injection molds, and in particular to a circulating spraying device for injection mold release agent. Background Technology

[0002] The injection mold release agent spraying device is used to evenly spray the release agent onto the mold surface to form an isolation layer, ensuring that the cured product can be easily demolded, avoiding adhesion that could damage the product or the mold, thereby extending the service life of the mold. It is suitable for various processes such as injection molding and extrusion, and is an important auxiliary equipment for improving production continuity and stability.

[0003] However, traditional spraying methods mainly rely on manual hand-held spray guns for static spraying. This method lacks dynamic coverage and often leads to problems such as uneven spraying and omissions. This not only seriously affects the demolding effect of the product and the service life of the mold, but also makes the spraying quality susceptible to the operator's skill level and fatigue level, making it difficult to guarantee stability and consistency. Utility Model Content

[0004] To overcome the problem that manual handheld spraying with a spray gun can easily lead to uneven spraying, omissions, and affect the demolding effect.

[0005] The technical solution of this utility model is as follows: a circulating spraying device for injection mold release agent, including a horizontally arranged support platform and support legs fixed to the bottom of the support platform. The operating area of ​​the support platform is provided with a lower mold and an upper mold that cooperates with the lower mold. A gantry-type bracket is vertically fixed on the support platform. A hydraulic cylinder is installed on the crossbeam of the bracket. The piston rod output end of the hydraulic cylinder is connected to the center of the top surface of the upper mold. A track groove extending longitudinally along the platform is opened on the surface of the support platform. A linear drive unit and a guide mechanism linked with the linear drive unit are provided in the track groove. The two together support a rigid column that can move along the axial direction of the groove. A main board with an internal cavity is provided on the top of the rigid column. A release agent spraying module is provided in the cavity. The release agent spraying module includes a spraying unit and a transmission unit that drives the spraying unit to move back and forth. The spraying unit is aligned with the forming surface of the lower mold and the forming surface of the upper mold respectively. The hydraulic cylinder drives the upper mold to perform vertical mold opening and closing movements. The transmission unit drives the spraying unit to realize dynamic coverage spraying of release agent on the surfaces of the upper mold and the lower mold.

[0006] Preferably, the linear drive unit includes a bearing housing 1 disposed on the inner wall of one side of the track groove, a servo motor disposed on the side end of the bearing platform, and a lead screw rotatably connected to the output shaft of the servo motor inside the bearing housing 1, the outer wall of the lead screw being threadedly connected to a rigid column.

[0007] Preferably, the guiding mechanism includes a guide rail disposed at the bottom of the track groove, a slider slidably connected on the guide rail, and the upper end of the slider being connected to the lower end of the rigid column.

[0008] Preferably, the transmission unit includes a rotary motor mounted on the upper end of the main board, a bearing housing 2 is provided inside the cavity, a rotating shaft connected to the output shaft of the rotary motor is rotatably connected inside the bearing housing 2, a spur gear is provided on the outer wall of the rotating shaft, and a rack is meshed with the spur gear.

[0009] Preferably, the side wall of the cavity is provided with a convex rail, and a concave block is slidably connected on the convex rail, with the end face of the concave block fixedly connected to the side end of the rack.

[0010] Preferably, the spraying unit includes a support plate set at the front end of the rack, a clamp set on the support plate, a material conveying pipe set inside the clamp, a nozzle set at the outlet of the material conveying pipe, and the inlet of the material conveying pipe connected to an external release agent source through a flexible hose.

[0011] Preferably, the bottom of the support leg is provided with an anti-slip pad, and the surface of the anti-slip pad is provided with raised protrusions.

[0012] The beneficial effects of this utility model are:

[0013] This solution combines a spraying unit with a transmission unit to achieve dynamic, comprehensive, and uniform spraying coverage of the upper and lower mold forming surfaces. It effectively solves the problems of uneven spraying and omissions that are prone to occur in traditional static spraying methods, thereby improving spraying quality and efficiency. Attached Figure Description

[0014] Figure 1 This is a first structural schematic diagram of one embodiment of the injection mold release agent circulating spraying device of this utility model;

[0015] Figure 2 This is a second structural schematic diagram of one embodiment of the injection mold release agent circulating spraying device of this utility model;

[0016] Figure 3 What is shown is Figure 1 A schematic diagram of the structure of the linear drive unit;

[0017] Figure 4 What is shown is Figure 1 Schematic diagram of the transmission unit;

[0018] Figure 5 What is shown is Figure 1 A schematic diagram of the spraying unit.

[0019] Explanation of reference numerals in the attached drawings: 1. Supporting platform; 2. Support leg; 3. Lower mold; 4. Upper mold; 5. Bracket; 6. Hydraulic cylinder; 7. Track groove; 8. Rigid column; 9. Main board; 10. Bearing seat one; 11. Servo motor; 12. Lead screw; 13. Guide rail; 14. Slider; 15. Rotary motor; 16. Bearing seat two; 17. Rotating shaft; 18. Spur gear; 19. Rack; 20. Convex rail; 21. Concave block; 22. Support plate; 23. Clamp; 24. Material conveying pipe; 25. Nozzle. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Please see Figure 1 - Figure 5This utility model provides an embodiment of a circulating spraying device for injection mold release agent, comprising a horizontally arranged support platform 1 and support legs 2 fixed to the bottom of the support platform 1. The operating area of ​​the support platform 1 is provided with a lower mold 3 and an upper mold 4 that cooperates with the lower mold. A gantry-type bracket 5 is vertically fixed to the support platform 1. A hydraulic cylinder 6 is installed on the crossbeam of the bracket 5. The piston rod output end of the hydraulic cylinder 6 is connected to the center of the top surface of the upper mold 4. A track groove 7 extending longitudinally along the platform is formed on the surface of the support platform 1. A linear drive unit and a guide mechanism linked with the linear drive unit are provided in the track groove 7. The two together support a rigid column 8 that can move along the axial direction of the groove. The top of the rigid column 8 is provided with a main board 9 that forms an internal cavity. A release agent is provided in the cavity. The mold release agent spraying module includes a spraying unit and a transmission unit that drives the spraying unit to move back and forth. The spraying unit is aligned with the forming surfaces of the lower mold 3 and the upper mold 4, respectively. A hydraulic cylinder 6 drives the upper mold 4 to perform vertical opening and closing movements. The transmission unit drives the spraying unit to achieve dynamic coverage spraying of the mold release agent on the surfaces of the upper mold 4 and the lower mold 3. The support platform 1 provides a stable working platform for the entire device. The lower mold 3 is part of the injection-molded product. It cooperates with the upper mold 4 to form the cavity of the injection-molded product. During the injection molding process, molten plastic material is injected into the cavity, and after cooling and solidification, it forms the product of the required shape. The upper mold 4 cooperates with the lower mold 3 to form the cavity of the injection-molded product. During injection molding, the upper mold 4 and the lower mold 3 are closed. A closed cavity space is formed to ensure accurate filling and molding of the plastic material. Hydraulic cylinder 6 is powered by a hydraulic system, driving the upper mold 4 to perform vertical opening and closing movements. When mold closing is required, the piston rod of hydraulic cylinder 6 extends, pushing the upper mold 4 downwards to close with the lower mold 3. When mold opening is required, the piston rod retracts, moving the upper mold 4 upwards to separate it from the lower mold 3. The linear drive unit, located within the track groove 7, is the power source for driving the rigid column 8 to move axially along the track groove 7. The guide mechanism is linked to the linear drive unit, jointly supporting the rigid column 8. The guide mechanism, through its cooperation with the rigid column 8, ensures the stability of the rigid column 8 during movement. The main board 9 is rigidly connected to the rigid column. The top of column 8 has an internal cavity that provides installation space for the mold release agent spraying module. Simultaneously, the movement of the main board 9 can drive the mold release agent spraying module to move together, enabling the spraying of mold release agent at different mold positions. The spraying unit is the execution component for mold release agent spraying. By spraying the mold release agent in an atomized form, it evenly covers the forming surfaces of the upper mold 4 and the lower mold 3, forming a mold release agent film. This film can reduce the friction between the product and the mold after the product is formed, making it easier for the product to be removed from the mold. At the same time, it can also protect the mold surface and extend the service life of the mold. The transmission unit drives the spraying unit to move back and forth in the cavity of the main board 9, thereby realizing the dynamic coverage spraying of mold release agent on the surfaces of the upper mold 4 and the lower mold 3.

[0022] Please see Figure 3 In this embodiment, the linear drive unit includes a bearing seat 10 disposed on the inner wall of one side of the track groove 7, a servo motor 11 disposed on the side end of the bearing platform 1, a lead screw 12 rotatably connected to the output shaft of the servo motor 11 inside the bearing seat 10, the outer wall of the lead screw 12 being threadedly connected to the rigid column 8, and a guide mechanism including a guide rail 13 disposed at the bottom of the track groove 7, a slider 14 slidably connected on the guide rail 13, the upper end of the slider 14 being connected to the lower end of the rigid column 8, the bearing seat 10 providing support and rotational positioning for the lead screw 12, and bearings installed inside the bearing seat 10 reducing the friction of the lead screw 12 during rotation, allowing the lead screw 12 to rotate smoothly. The servo motor 11 serves as the power source for the linear drive unit. The output shaft of the servo motor 11 is connected to the lead screw 12, converting electrical energy into mechanical energy to drive the lead screw 12 to rotate. When the servo motor 11 drives the lead screw 12 to rotate, the rigid column 8 is restricted by the guide mechanism and can only move axially along the track groove 7. The rotational motion of the lead screw 12 is converted into the linear motion of the rigid column 8, thereby realizing the precise movement of the rigid column 8 within the track groove 7. This drives the release agent spraying module to the designated position for spraying. The guide rail 13 provides a sliding track for the slider 14, ensuring that the slider 14 slides stably and smoothly on the guide rail 13, thus guaranteeing the linearity and stability of the movement of the rigid column 8.

[0023] Please see Figure 1 , Figure 4 and Figure 5In this embodiment, the transmission unit includes a rotary motor 15 mounted on the upper end of the main board 9. A bearing housing 16 is provided inside the cavity. A rotating shaft 17, rotatably connected to the output shaft of the rotary motor 15, is rotatably connected inside the bearing housing 16. A spur gear 18 is provided on the outer wall of the rotating shaft 17, meshing with a rack 19. A convex rail 20 is provided on the side wall of the cavity, and a concave block 21 is slidably connected to the convex rail 20. The end face of the concave block 21 is fixedly connected to the side end of the rack 19. The spraying unit includes a support plate 22 mounted on the front end of the rack 19. A clamp 23 is provided on the support plate 22, and a material conveying mechanism is provided inside the clamp 23. Pipe 24, the outlet of the conveying pipe 24 is equipped with a nozzle 25, and the inlet of the conveying pipe 24 is connected to an external release agent source through a flexible hose. The bottom of the support leg 2 is equipped with an anti-slip pad, the surface of which is arrayed with protrusions. The rotary motor 15 is the power source for the transmission unit, driving the rotating shaft 17 to rotate and providing power for the reciprocating movement of the spraying unit. Bearing seat 2 16 provides support and rotational positioning for the rotating shaft 17. Bearings are installed inside the bearing seat 2 16 to reduce friction during rotation, allowing the rotating shaft 17 to rotate smoothly. When the rotary motor 15 drives the rotating shaft 17 to rotate, the direct... Gear 18 rotates accordingly, transmitting the power of the rotary motor 15 to the rack 19. The direction and speed of the rack 19's movement are determined by the rotation direction and speed of the spur gear 18, thereby enabling the spraying unit to reciprocate within the cavity. This allows the spraying unit to cover different positions of the mold for spraying operations. The cooperation between the convex rail 20 and the concave block 21 provides guidance and support, ensuring the straightness and stability of the rack 19 during movement and preventing it from shifting or wobbling. The support plate 22 provides an installation support platform for the clamp 23 and the feed pipe 24, and it moves with the rack 19. The movement causes the clamp 23 and the feed pipe 24 to move back and forth together. The clamp 23 is used to fix the feed pipe 24. The clamp 23 securely installs the feed pipe 24 on the support plate 22 through the fastening action, preventing the feed pipe 24 from shaking or falling off during the spraying process. The release agent enters the feed pipe 24 from the external release agent source through the flexible hose, and then is sprayed out from the nozzle 25, evenly covering the forming surfaces of the upper mold 4 and the lower mold 3. The anti-slip pad can increase the friction between the support leg 2 and the ground, prevent the device from sliding due to vibration or external force during operation, and improve the stability of the device.

[0024] Working principle: First, the lower mold 3 of the injection mold is installed in the operating area of ​​the support platform 1, and the upper mold 4 is matched with the lower mold 3 to form the cavity of the injection molded product. Then, the external release agent source is connected to the material delivery pipe 24 through a flexible hose, and the release agent enters the material delivery pipe 24 to prepare for the spraying operation.

[0025] At the same time, the linear drive unit starts working, and the servo motor 11 drives the lead screw 12 to rotate. Since the rigid column 8 is guided and restricted by the guide rail 13 and the slider 14, the rotational motion of the lead screw 12 is converted into the linear motion of the rigid column 8, which drives the release agent spraying module to move axially along the track groove 7 to the designated position. At the same time, the rotary motor 15 in the transmission unit starts, drives the rotating shaft 17 to rotate, and the spur gear 18 rotates accordingly, transmitting power to the rack 19. Under the guidance of the convex rail 20 and the concave block 21, the rack 19 realizes the reciprocating movement, which drives the spraying unit to move in the cavity.

[0026] After the spraying unit moves into place, the release agent in the feed pipe 24 is sprayed out evenly in the form of atomization through the nozzle 25, covering the molding surfaces of the upper mold 4 and the lower mold 3, forming a release agent film. This film can reduce the friction between the product and the mold after the product is molded, making it easier for the product to be removed from the mold, and protecting the mold surface and extending the service life of the mold.

[0027] After one spraying is completed, the linear drive unit and the transmission unit work together to drive the spraying unit to move to the next spraying position and repeat the above spraying process until the surfaces of the upper mold 4 and the lower mold 3 are evenly covered with the release agent.

[0028] Finally, the hydraulic cylinder 6 is activated, and the hydraulic system provides power to drive the piston rod to extend, pushing the upper mold 4 downward to close with the lower mold 3, forming a closed cavity space to prepare for the injection molding process. After the injection molding process is completed, the hydraulic cylinder 6 is activated again, driving the piston rod to retract, which in turn moves the upper mold 4 upward, separating the upper mold 4 from the lower mold 3, and removing the molded product.

[0029] Through the above steps, by combining the spraying unit and the transmission unit, dynamic, comprehensive and uniform spraying of the mold forming surface is achieved, which improves quality and efficiency and solves the problem that static spraying by manually holding a spray gun can easily lead to uneven spraying, omissions and affect the demolding effect.

Claims

1. A circulating spraying device for injection mold release agent, comprising a horizontally arranged support platform (1) and support legs (2) fixed to the bottom of the support platform (1), wherein the operating area of ​​the support platform (1) is provided with a lower mold (3) and an upper mold (4) that cooperates with the lower mold, and a gantry-type bracket (5) is vertically fixed on the support platform (1), and a hydraulic cylinder (6) is installed on the crossbeam of the bracket (5), wherein the piston rod output end of the hydraulic cylinder (6) is connected to the center of the top surface of the upper mold (4); characterized in that: The surface of the support platform (1) is provided with a track groove (7) extending longitudinally along the platform. The track groove (7) is provided with a linear drive unit and a guide mechanism linked with the linear drive unit. The two together support a rigid column (8) that can move along the groove axis. The top of the rigid column (8) is provided with a main board (9) forming an internal cavity. A mold release agent spraying module is provided in the cavity. The mold release agent spraying module includes a spraying unit and a transmission unit that drives the spraying unit to move back and forth. The spraying unit is aligned with the forming surface of the lower mold (3) and the forming surface of the upper mold (4) respectively. The hydraulic cylinder (6) drives the upper mold (4) to perform vertical opening and closing motion, and the transmission unit drives the spraying unit to achieve dynamic coating of the release agent on the surfaces of the upper mold (4) and the lower mold (3).

2. The injection mold release agent circulating spraying device according to claim 1, characterized in that: The linear drive unit includes a bearing seat (10) set on the inner wall of one side of the track groove (7), a servo motor (11) set on the side end of the bearing platform (1), and a lead screw (12) rotatably connected to the output shaft of the servo motor (11) inside the bearing seat (10). The outer wall of the lead screw (12) is threadedly connected to the rigid column (8).

3. The injection mold release agent circulating spraying device according to claim 2, characterized in that: The guiding mechanism includes a guide rail (13) set at the bottom of the track groove (7), a slider (14) slidably connected on the guide rail (13), and the upper end of the slider (14) is connected to the lower end of the rigid column (8).

4. The injection mold release agent circulating spraying device according to claim 3, characterized in that: The transmission unit includes a rotary motor (15) located on the upper end of the main board (9), a bearing housing (16) is provided in the cavity, a rotating shaft (17) connected to the output shaft of the rotary motor (15) is rotatably connected in the bearing housing (16), a spur gear (18) is provided on the outer wall of the rotating shaft (17), and a rack (19) is meshed with the spur gear (18).

5. The injection mold release agent circulating spraying device according to claim 4, characterized in that: The side wall of the cavity is provided with a convex rail (20), and a concave block (21) is slidably connected on the convex rail (20). The end face of the concave block (21) is fixedly connected to the side end of the rack (19).

6. The injection mold release agent circulating spraying device according to claim 5, characterized in that: The spraying unit includes a support plate (22) set at the front end of the rack (19), a clamp (23) is set on the support plate (22), a material conveying pipe (24) is set inside the clamp (23), a nozzle (25) is set at the outlet of the material conveying pipe (24), and the inlet of the material conveying pipe (24) is connected to an external release agent source through a flexible hose.

7. The injection mold release agent circulating spraying device according to claim 6, characterized in that: The bottom of the support leg (2) is provided with an anti-slip pad, and the surface of the anti-slip pad is provided with protrusions.

Images