Integrated injection molding-punch forming process for plastic-hardware composite part of dust collector

Abstract

The invention discloses an integrated injection molding-punch forming process for a plastic-hardware composite part of a dust collector, and relates to the technical field of composite material forming. The method comprises the steps of S1, treating agent pre-coating, S2, stamping hardware transferring, S3, stamping hardware injection molding and S4, online detection. According to the hardware surface treatment device, through the arranged spraying mechanism, after the stamped and formed hardware enters the spraying bin, a spraying head sprays an interface treatment agent to the surface of the hardware, the hardware is made to move through rotation of a plurality of stirring plates, the hardware is irregularly overturned in the moving process, all the faces of the hardware make full contact with the sprayed interface treatment agent, and therefore the hardware surface treatment effect is improved. The hardware pre-coating treatment efficiency and effect are improved, meanwhile, the manual coating operation time is saved, the production cost of finished composite parts is reduced, and the production efficiency of the finished composite parts is improved.

Description

Technical Field

[0001] This invention relates to the field of composite material molding technology, specifically to an integrated injection molding-stamping process for plastic-metal composite parts for vacuum cleaners. Background Technology

[0002] Vacuum cleaner plastic-hardware composite parts are composite parts for vacuum cleaners, such as plastic handles with hardware inserts and fan blade bushings. They are usually formed by injection molding and encapsulation of stamped hardware parts. However, existing technologies still have some shortcomings when processing stamped hardware parts: Before stamped hardware parts enter the mold cavity, due to the small size of some vacuum cleaner composite parts, the existing technology usually requires workers to manually apply the prepared interface treatment agent to the outer surface of the stamped hardware parts. Because the hardware parts are small and numerous, the pre-coating efficiency of the stamped hardware parts is low, and a lot of manual coating time is wasted, which seriously affects the production cost and efficiency of the finished composite parts.

[0003] To address the aforementioned problems, the inventors proposed an integrated injection molding-stamping process for plastic-metal composite parts of vacuum cleaners. Summary of the Invention

[0004] In order to solve the above problems, the purpose of this invention is to provide an integrated injection molding and stamping process for plastic-metal composite parts of vacuum cleaners.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: an integrated injection molding-stamping process for plastic-metal composite parts of vacuum cleaners, comprising the following steps: S1, Pre-coating agent By applying a pre-treatment agent to the surface of stamped hardware parts using a coating equipment, the adhesion between the plastic and the hardware is further enhanced. S2, Transfer of stamped hardware parts The stamped metal parts are directly transferred to the injection cavity of the mold by a robotic arm and positioned. S3, Injection Molding of Stamped Hardware Parts Uncooled stamped metal parts are encapsulated by injection molding, and heat conduction is used to improve the bonding strength between the plastic and the metal to form a composite finished part. S4, Online Detection The injection-molded composite parts are transported via a conveyor line, and online inspection equipment is used to inspect the composite parts in real time, monitoring the bonding strength and dimensional accuracy of the composite parts.

[0006] Preferably, the coating equipment includes a conveying mechanism, a spraying mechanism, and a stirring mechanism, wherein the spraying mechanism is located in the middle of the conveying mechanism, and the stirring mechanism is located on one side of the conveying mechanism.

[0007] Preferably, the conveying mechanism includes a frame, with rotating rollers rotatably mounted at both ends of the frame, a conveyor belt driving between the two rotating rollers, a first drive wheel fixedly mounted at one end of each of the two rotating rollers, a first drive belt driving between the two first drive wheels, and a plurality of first teeth fixedly mounted on the outer wall of the first drive belt.

[0008] Preferably, two baffles are fixedly installed inside the frame.

[0009] Preferably, the spraying mechanism includes a spraying chamber, which is fixedly installed in the middle of the frame. The lower end face of the spraying chamber is provided with two through slots, through which the conveyor belt and baffles pass. A storage tray is fixedly installed on the top wall of the spraying chamber, and a plurality of nozzles arranged in a ring array are fixedly installed on the lower end face of the storage tray. A first rotating shaft is rotatably installed in the middle of the spraying chamber, which passes through the storage tray. A plurality of actuating plates arranged in a ring array are fixedly installed at one end of the first rotating shaft, with the nozzles located above the actuating plates and the actuating plates located between two baffles.

[0010] Preferably, a door is hinged to one side of the spraying chamber.

[0011] Preferably, a conveying pipe is fixedly installed on the storage tray.

[0012] Preferably, a fixed frame is fixedly installed on one side of the frame, a servo motor is fixedly installed on the fixed frame, a rotating rod is fixedly installed on the drive output end of the servo motor, a first transmission shaft is rotatably installed on the upper end face of the spraying chamber, a second transmission wheel is fixedly installed on one end of the rotating rod and one end of the first transmission shaft, a second transmission belt is installed between the two second transmission wheels, a first bevel gear is fixedly installed on the other end of the first transmission shaft and the other end of the first rotating shaft, and the two first bevel gears are meshed and connected. A rotating ring is fixedly provided at one end of the rotating rod, and a plurality of second teeth are fixedly provided in a ring-shaped array on the outer wall of the rotating ring, and the second teeth are meshed with the first teeth.

[0013] Preferably, the stirring mechanism includes a storage tank, a conveying pump is fixedly installed at the bottom of the storage tank, one end of the conveying pipe is fixedly installed at the discharge port of the conveying pump, a tank cover is detachably installed at the open end of the storage tank, a stirring shaft is provided inside the storage tank, a plurality of stirring paddles are fixedly installed on the stirring shaft, a second rotating shaft is rotatably installed in the middle of the tank cover, one end of the second rotating shaft is fixedly connected to one end of the stirring shaft, and a driven gear is fixedly installed at the other end of the second rotating shaft.

[0014] Preferably, a second drive shaft is rotatably mounted on the fixed frame, and a second bevel gear is fixedly provided at the other end of the rotating rod and at one end of the second drive shaft. The two second bevel gears are meshed and connected. A driving gear is fixedly provided at the other end of the second drive shaft, and the driving gear and the driven gear are meshed and connected.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this invention, through the spraying mechanism, when the stamped metal parts enter the spraying chamber, the nozzle sprays the interface treatment agent onto the surface of the metal parts. The rotation of multiple actuating plates causes the metal parts to move. During the movement, the metal parts rotate irregularly, so that all surfaces of the metal parts can fully contact the sprayed interface treatment agent, thereby improving the efficiency and effect of the pre-coating treatment of the metal parts. At the same time, it saves the time of manual coating operations, reduces the production cost of composite parts, and improves the production efficiency of composite parts. 2. In this invention, the stirring mechanism, through the cooperation of the active gear and the passive gear in the stirring mechanism, can drive the stirring paddle in the storage tank to rotate slowly, thereby stirring the interface treatment agent in the storage tank, avoiding the precipitation of the interface treatment agent, and further improving the effect of the pre-coating treatment of hardware parts. 3. In this invention, the conveying mechanism can intermittently convey the stamped metal parts during the pre-coating process of the spray nozzle mechanism, so that the metal parts continuously enter the spraying chamber, thereby improving the efficiency of the pre-coating process of the stamped metal parts and improving the production efficiency of the composite parts. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0017] Figure 1 This is a schematic diagram of the overall structure of the coating equipment of the present invention.

[0018] Figure 2 This is another overall structural schematic diagram of the coating equipment of the present invention.

[0019] Figure 3 This is a cross-sectional structural diagram of the spraying chamber of the present invention.

[0020] Figure 4 This is a schematic diagram of the connection structure of the conveying mechanism, spraying mechanism and stirring mechanism of the present invention.

[0021] Figure 5 For the present invention Figure 4 Enlarged schematic diagram of part A in the diagram.

[0022] In the diagram: 100. Coating equipment; 1. Conveying mechanism; 2. Spraying mechanism; 4. Mixing mechanism; 11. Frame; 12. Rotating roller; 13. Conveyor belt; 14. First drive wheel; 15. First drive belt; 16. First tooth; 17. Baffle; 21. Spraying chamber; 22. Chamber door; 23. Through groove; 25. Storage tray; 26. Spray nozzle; 27. Conveying pipe; 28. First rotating shaft; 29. ​​Actuating plate; 3. Fixed frame; 31. Servo motor; 32. Rotating rod; 33. First drive shaft; 34. Second drive wheel; 35. Second drive belt; 36. First bevel gear; 37. Rotating ring; 38. Second gear; 41. Storage tank; 42. Tank cover; 43. Stirring shaft; 44. Stirring paddle; 45. Second rotating shaft; 46. Driven gear; 47. Second drive shaft; 48. Second bevel gear; 49. Driven gear. Detailed Implementation

[0023] 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.

[0024] Example: Figure 1-5 As shown, this invention provides an integrated injection molding-stamping process for plastic-metal composite parts of vacuum cleaners, including the following steps: S1, Pre-coating agent The coating equipment 100 pre-coats a treatment agent on the surface of the stamped hardware parts to further enhance the adhesion between the plastic and the hardware. S2, Transfer of stamped hardware parts The stamped metal parts are directly transferred to the injection cavity of the mold by a robotic arm and positioned. S3, Injection Molding of Stamped Hardware Parts Uncooled stamped metal parts are encapsulated by injection molding, and heat conduction is used to improve the bonding strength between the plastic and the metal to form a composite finished part. S4, Online Detection The injection-molded composite parts are transported via a conveyor line, and online inspection equipment is used to inspect the composite parts in real time, monitoring the bonding strength and dimensional accuracy of the composite parts.

[0025] The coating equipment 100 includes a conveying mechanism 1, a spraying mechanism 2, and a stirring mechanism 4. The spraying mechanism 2 is located in the middle of the conveying mechanism 1, and the stirring mechanism 4 is located on one side of the conveying mechanism 1. Through the coating equipment 100 composed of the conveying mechanism 1, the spraying mechanism 2, and the stirring mechanism 4, the conveying mechanism 1 can intermittently convey the stamped metal parts, the spraying mechanism 2 can pre-coat the metal parts, and the stirring mechanism 4 can stir the interface treatment agent required for the pre-coating treatment to prevent the interface treatment agent from settling.

[0026] The conveying mechanism 1 includes a frame 11, with rotating rollers 12 rotatably mounted at both ends of the frame 11. A conveyor belt 13 is driven between the two rotating rollers 12. By driving the rotating rollers 12 to rotate, the rotating rollers 12 enable the conveyor belt 13 to transport the stamped metal parts. A first drive wheel 14 is fixedly mounted at one end of each of the two rotating rollers 12. A first drive belt 15 is driven between the two first drive wheels 14. Several first teeth 16 are fixedly mounted on the outer wall of the first drive belt 15. By driving the first teeth 16 to move, the first teeth 16 can drive the rotating rollers 12 to rotate through the first drive belt 15 and the first drive wheel 14. Two baffles 17 are fixedly mounted inside the frame 11. By setting the two baffles 17, the two baffles 17 can limit the metal parts on the conveyor belt 13 and prevent the metal parts from falling off.

[0027] The spraying mechanism 2 includes a spraying chamber 21. When the conveyor belt 13 transports the hardware parts, the hardware parts enter the spraying chamber 21 and are pre-coated with an interface treatment agent. The spraying chamber 21 is fixedly installed in the middle of the frame 11. A chamber door 22 is hinged to one side of the spraying chamber 21. By setting the chamber door 22, it can be opened to facilitate the inspection and maintenance of the equipment components inside the spraying chamber 21. Two through slots 23 are provided on the lower end face of the spraying chamber 21. The hardware parts enter the spraying chamber 21 through one of the through slots 23 and leave the spraying chamber 21 through the other through slot 23. The conveyor belt 13 and the baffle 17 pass through the through slots 23. A storage tray 25 is fixedly installed on the top wall of the spraying chamber 21. Several nozzles 26 are fixedly arranged in a ring array on the lower end face of the storage tray 25. After the treatment agent is delivered into the storage tray 25, the nozzle 26 can spray the interface treatment agent downwards to coat the surface of the hardware. A conveying pipe 27 is fixedly installed on the storage tray 25. By setting the conveying pipe 27, the interface treatment agent can be delivered into the inner cavity of the storage tray 25. A first rotating shaft 28 is rotatably installed in the middle of the spraying chamber 21. The first rotating shaft 28 passes through the storage tray 25. A number of actuating plates 29 arranged in a ring array are fixedly installed at one end of the first rotating shaft 28. The nozzle 26 is located above the actuating plates 29. The actuating plates 29 are located between two baffles 17. By driving the first rotating shaft 28 to rotate, the first rotating shaft 28 can make the multiple actuating plates 29 rotate. The multiple actuating plates 29 can make the hardware between the two baffles 17 move, so that the sprayed interface treatment agent can adhere to the outer surface of the hardware.

[0028] A fixed frame 3 is fixedly installed on one side of the frame 11. A servo motor 31 is fixedly installed on the fixed frame 3. A rotating rod 32 is fixedly installed at the drive output end of the servo motor 31. A first transmission shaft 33 is rotatably installed on the upper end face of the spraying chamber 21. A second transmission wheel 34 is fixedly installed at one end of the rotating rod 32 and one end of the first transmission shaft 33. A second transmission belt 35 is installed between the two second transmission wheels 34. A first bevel gear 36 is fixedly installed at the other end of the first transmission shaft 33 and the other end of the first rotating shaft 28. The two first bevel gears 36 are meshed and connected. By starting the servo motor 31, the drive shaft of the servo motor 31 can make the rotating rod 32 rotate. The rotating rod 32 can make the first transmission shaft 33 rotate through the two second transmission wheels 34 and the second transmission belt 35. The first transmission shaft 33 can make the first rotating shaft 28 rotate through the two first bevel gears 36. A rotating ring 37 is fixedly provided at one end of the rotating rod 32. Several second teeth 38 are fixedly provided in a ring array on the outer wall of the rotating ring 37. The second teeth 38 and the first teeth 16 are meshed and connected. The rotating rod 32 can make the rotating ring 37 rotate. The rotating ring 37 can make the first transmission belt 15 transmit through the meshing of the first teeth 38 and the second teeth 16.

[0029] The mixing mechanism 4 includes a storage tank 41 for storing the interface treatment agent. A delivery pump is fixedly installed at the bottom of the storage tank 41, and one end of the delivery pipe 27 is fixedly installed at the outlet of the delivery pump. By starting the delivery pump, the delivery pump can draw the interface treatment agent in the storage tank 41 and deliver it to the inner cavity of the storage tray 25 through the delivery pipe 27 for use by the nozzle 26. The open end of the storage tank 41 is detachably installed with a tank cover 42 by bolts. The storage tank 41 is equipped with a mixing shaft 43 inside, and several mixing paddles are fixedly installed on the mixing shaft 43. 44. By driving the stirring shaft 43 to rotate, the stirring shaft 43 can cause the stirring paddle 44 to rotate. The stirring paddle 44 can stir the interface treatment agent in the storage tank 41 to prevent the interface treatment agent from settling. A second rotating shaft 45 is rotatably installed in the middle of the tank cover 42. One end of the second rotating shaft 45 is fixedly connected to one end of the stirring shaft 43. A driven gear 46 is fixedly installed at the other end of the second rotating shaft 45. By driving the driven gear 46 to rotate, the driven gear 46 can cause the second rotating shaft 45 to rotate, and the second rotating shaft 45 can cause the stirring shaft 43 to rotate.

[0030] A second drive shaft 47 is rotatably mounted on the fixed frame 3. A second bevel gear 48 is fixedly installed at the other end of the rotating rod 32 and at one end of the second drive shaft 47. The two second bevel gears 48 are meshed together. A driving gear 49 is fixedly installed at the other end of the second drive shaft 47. The driving gear 49 and the driven gear 46 are meshed together. When the rotating rod 32 rotates, the rotating rod 32 can cause the second drive shaft 47 to rotate the driving gear 49 through the two second bevel gears 48. The driving gear 49 can cause the second rotating shaft 45, the stirring shaft 43 and the stirring paddle 44 to rotate slowly through the driven gear 46.

[0031] Working principle: When pre-coating is required for stamped metal parts, the servo motor 31 and the conveying pump at the bottom of the storage tank 41 are started first. The drive shaft of the servo motor 31 causes the rotating rod 32 to rotate, and the rotating rod 32 causes the rotating ring 37 to rotate. The rotating ring 37 transmits through the meshing of the second tooth 38 and the first tooth 16 to the first transmission belt 15. The first transmission belt 15 causes the two rotating rollers 12 to rotate synchronously and in the same direction through the two first transmission wheels 14. The two rotating rollers 12 transmit through the conveyor belt 13. When the second tooth 38 disengages from the first tooth 16, the conveyor belt 13 stops transmitting. As the stamped hardware parts are placed on the conveyor belt 13, the conveyor belt 13 intermittently transports the hardware parts. The hardware parts enter the spraying chamber 21 through the through groove 23 on one side of the spraying chamber 21 and enter between two adjacent actuating plates 29. The conveying pump operates to transport the interface treatment agent in the storage tank 41 to the inner cavity of the storage tray 25. Multiple nozzles 26 spray the interface treatment agent downwards, and the interface treatment agent is coated on the surface of the hardware parts. Meanwhile, the rotating rod 32 causes the first transmission shaft 33 to rotate through two second transmission wheels 34 and a second transmission belt 35. The first transmission shaft 33 causes the first rotating shaft 28 to rotate through two first bevel gears 36. The first rotating shaft 28 causes multiple actuating plates 29 to rotate. The multiple actuating plates 29 cause the hardware to move. During the movement, the hardware rotates irregularly, so that all surfaces of the hardware can fully contact the sprayed interface treatment agent, thereby improving the effect of the pre-coating treatment of the hardware. Meanwhile, the rotating rod 32 causes the second transmission shaft 47 to rotate the driving gear 49 through two second bevel gears 48. The driving gear 49 causes the second rotating shaft 45, the stirring shaft 43 and the stirring paddle 44 to rotate slowly through the driven gear 46. During the slow rotation, the stirring paddle 44 stirs the interface treatment agent in the storage tank 41 to prevent the interface treatment agent from settling and further improve the effect of the pre-coating treatment of hardware parts.

[0032] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. An integrated injection molding-stamping process for plastic-metal composite parts of a vacuum cleaner, characterized in that, Includes the following steps: S1, Pre-coating agent By pre-coating the surface of the stamped hardware with a treatment agent using a coating device (100), the adhesion between the plastic and the hardware is further enhanced. S2, Transfer of stamped hardware parts The stamped metal parts are directly transferred to the injection cavity of the mold by a robotic arm and positioned. S3, Injection Molding of Stamped Hardware Parts Uncooled stamped metal parts are encapsulated by injection molding, and heat conduction is used to improve the bonding strength between the plastic and the metal to form a composite finished part. S4, Online Detection The injection-molded composite parts are transported via a conveyor line, and online inspection equipment is used to inspect the composite parts in real time, monitoring the bonding strength and dimensional accuracy of the composite parts.

2. The integrated injection molding-stamping process for a vacuum cleaner plastic-metal composite part as described in claim 1, characterized in that, The coating equipment (100) includes a conveying mechanism (1), a spraying mechanism (2) and a stirring mechanism (4). The spraying mechanism (2) is located in the middle of the conveying mechanism (1), and the stirring mechanism (4) is located on one side of the conveying mechanism (1).

3. The integrated injection molding-stamping process for a vacuum cleaner plastic-metal composite part as described in claim 2, characterized in that, The conveying mechanism (1) includes a frame (11), with rotating rollers (12) rotatably mounted at both ends of the frame (11), and a conveyor belt (13) driving between the two rotating rollers (12). A first drive wheel (14) is fixedly provided at one end of each of the two rotating rollers (12), and a first drive belt (15) driving between the two first drive wheels (14). A plurality of first teeth (16) are fixedly provided on the outer wall of the first drive belt (15).

4. The integrated injection molding-stamping process for a vacuum cleaner plastic-metal composite part as described in claim 3, characterized in that, The frame (11) is internally fixed with two baffles (17).

5. The integrated injection molding-stamping process for a vacuum cleaner plastic-metal composite part as described in claim 4, characterized in that, The spraying mechanism (2) includes a spraying chamber (21), which is fixedly installed in the middle of the frame (11). The lower end face of the spraying chamber (21) is provided with two through slots (23). The conveyor belt (13) and the baffle (17) pass through the through slots (23). The top wall of the spraying chamber (21) is fixedly provided with a storage tray (25). The lower end face of the storage tray (25) is fixedly provided with a number of nozzles (26) arranged in a ring. A first rotating shaft (28) is rotatably installed in the middle of the spraying chamber (21). The first rotating shaft (28) passes through the storage tray (25). One end of the first rotating shaft (28) is fixedly provided with a number of actuating plates (29) arranged in a ring. The nozzles (26) are located above the actuating plates (29). The actuating plates (29) are located between the two baffles (17).

6. The integrated injection molding-stamping process for a vacuum cleaner plastic-metal composite part as described in claim 5, characterized in that, A door (22) is hinged to one side of the spraying chamber (21).

7. The integrated injection molding-stamping process for a vacuum cleaner plastic-metal composite part as described in claim 5, characterized in that, A conveying pipe (27) is fixedly installed on the storage tray (25).

8. The integrated injection molding-stamping process for a vacuum cleaner plastic-metal composite part as described in claim 7, characterized in that, A fixed frame (3) is fixedly installed on one side of the frame (11), and a servo motor (31) is fixedly installed on the fixed frame (3). A rotating rod (32) is fixedly installed at the drive output end of the servo motor (31). A first transmission shaft (33) is rotatably installed on the upper end face of the spraying chamber (21). A second transmission wheel (34) is fixedly installed at one end of the rotating rod (32) and one end of the first transmission shaft (33). A second transmission belt (35) is installed between the two second transmission wheels (34). A first bevel gear (36) is fixedly installed at the other end of the first transmission shaft (33) and the other end of the first rotating shaft (28). The two first bevel gears (36) are meshed and connected. One end of the rotating rod (32) is fixedly provided with a rotating ring (37), and a number of second teeth (38) arranged in a ring array are fixedly provided on the outer wall of the rotating ring (37), and the second teeth (38) and the first teeth (16) are meshed and connected.

9. The integrated injection molding-stamping process for a vacuum cleaner plastic-metal composite part as described in claim 8, characterized in that, The stirring mechanism (4) includes a storage tank (41), a conveying pump is fixedly installed at the bottom of the storage tank (41), one end of the conveying pipe (27) is fixedly installed at the outlet of the conveying pump, a tank cover (42) is detachably installed at the open end of the storage tank (41), a stirring shaft (43) is provided inside the storage tank (41), a number of stirring paddles (44) are fixedly installed on the stirring shaft (43), a second rotating shaft (45) is rotatably installed in the middle of the tank cover (42), one end of the second rotating shaft (45) is fixedly connected to one end of the stirring shaft (43), and a driven gear (46) is fixedly installed at the other end of the second rotating shaft (45).

10. The integrated injection molding-stamping process for a vacuum cleaner plastic-metal composite part as described in claim 9, characterized in that, A second drive shaft (47) is rotatably mounted on the fixed frame (3). A second bevel gear (48) is fixedly installed at the other end of the rotating rod (32) and at one end of the second drive shaft (47). The two second bevel gears (48) are meshed together. A drive gear (49) is fixedly installed at the other end of the second drive shaft (47). The drive gear (49) and the driven gear (46) are meshed together.

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