Equipment for removing residual glue at water gap by using milling cutter

Abstract

The utility model provides equipment for removing residual glue at a water gap by using a milling cutter, which relates to the technical field of plastic part processing and comprises a dust collection block, a cavity is formed in the dust collection block, a dust collection port and a dust outlet are formed in the side surface of the dust collection block, the dust collection port faces downwards and is positioned on one side of the milling cutter, and the dust outlet is sequentially communicated with a recovery bin and negative pressure equipment; the cooling part comprises a liquid cooling pipe, a temperature conducting piece, a three-way connector and two water diversion pipes, the liquid cooling pipe surrounds the outer wall of the cavity, the temperature conducting piece is arranged on the liquid cooling pipe in a sleeving mode, one end of the temperature conducting piece extends to penetrate into the inner wall of the cavity, the liquid cooling pipe is communicated with the two water diversion pipes through the three-way connector, and the two water diversion pipes are communicated with a water outlet pipe and a water inlet pipe of the condenser respectively; when a plastic part is used for milling a glue port, the product can be used for absorbing and removing generated plastic cuttings, in the absorbing and removing process, the situation that the cuttings adhere to the wall due to overheating can be avoided, and the probability that the plastic cuttings adhere to the wall due to the electrostatic effect can be reduced through the electrostatic neutralization effect.

Description

Technical Field

[0001] This utility model relates to the field of plastic parts processing technology, and in particular to a device for removing residual glue from sprue using a milling cutter. Background Technology

[0002] Because plastic molding conditions cannot be fixed and are affected by environmental and external factors, after product molding, the residual glue at the sprue is prone to be too long. In addition, the surface around the sprue has a glossy structure, and it is difficult to cut the sprue manually, which can easily cause surface scratches and other problems, thus the quality cannot be guaranteed.

[0003] Existing equipment uses a milling machine to cut off residual plastic from the sprue, and is equipped with a dust extraction structure to remove the granular plastic chips generated during milling, thus maintaining the smoothness of the plastic parts surface.

[0004] However, in actual application, the granular plastic chips may separate from the plastic parts at high temperatures and enter the negative pressure pipe. They may clump together and adhere to the inner wall of the pipe in a molten state, affecting the normal operation of the subsequent dust collection process. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the embodiments of this utility model provide a device for removing residual glue from sprue using a milling cutter. The technical problem to be solved by this utility model is: how to solve the problem of plastic shavings adhering to the inner wall of the pipe during the dust collection process.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a device for removing residual glue from sprue using a milling cutter, comprising a dust-collecting block for connecting to the cutter holder of a milling machine, the dust-collecting block having an internal cavity and a dust-collecting port and a dust-exit port on its side, the dust-collecting port facing downwards and located on one side of the milling cutter, and the dust-exit port being connected in sequence to a recovery chamber and a negative pressure device; a cooling component comprising a liquid-cooling pipe, a temperature-conducting plate, a tee connector, and two water inlet pipes, the liquid-cooling pipe surrounding the outer wall of the cavity, the temperature-conducting plate being fitted onto the liquid-cooling pipe, one end of the temperature-conducting plate extending to penetrate into the inner wall of the cavity, the liquid-cooling pipe being connected to the two water inlet pipes respectively through the tee connector, and the two water inlet pipes being connected to the outlet pipe and inlet pipe of the condenser respectively; the negative pressure device and the condenser are both electrically connected to a controller.

[0007] In a preferred embodiment, the extension of the thermal conductive sheet and the sidewall of the cavity are sealed with an adhesive.

[0008] In a preferred embodiment, a spiral air duct is provided inside the cavity, with the two ends of the spiral air duct connected to the dust inlet and dust outlet of the cavity, respectively, and the spiral air duct is arranged in a spiral shape.

[0009] In a preferred embodiment, the spiral duct includes a bowl-shaped shell and a plate bent into a spiral shape, the plate being fixedly connected inside the bowl-shaped shell, and the outer surface of the bowl-shaped shell pressing against the extensions of several heat-conducting fins.

[0010] In a preferred embodiment, the spiral duct is a spiral-shaped tube structure, with both ends of the tube inserted into the dust inlet and dust outlet of the cavity, respectively, and smoothly transitioning between the corresponding dust inlet and dust outlet.

[0011] In a preferred embodiment, the diameter of the chip inlet end of the spiral duct is smaller than the diameter of the chip outlet end.

[0012] In a preferred embodiment, a conductive ring is connected to the dust suction port of the cavity, and wires are arranged in the inner wall of the cavity to ground the conductive ring. A metal electrostatic neutralization mesh is connected to the conductive ring.

[0013] In a preferred embodiment, the dust collection block includes a cover plate, a base, a dust collection nozzle, and a guide tube. The cover plate and the base are detachably connected to the blade holder via threaded fasteners, and the two cover each other to form a chamber. The bottom of the base is threadedly connected to the dust collection nozzle, and the guide tube is connected to the side wall of the base. The guide tube is connected to the recovery chamber and the negative pressure equipment via a flexible pipe.

[0014] In a preferred embodiment, the output end of the negative pressure device, the recovery chamber, and the flexible pipe are connected by a tee joint, and an isolation net for isolating plastic chips is provided between the output end of the negative pressure device and the recovery chamber.

[0015] The technical effects and advantages of this utility model are as follows:

[0016] This application addresses the issue of removing plastic chips generated during the milling of water-filled nozzles on plastic parts. The removal process not only prevents chips from sticking to the wall due to overheating, but also reduces the probability of plastic chips sticking to the wall due to static electricity through electrostatic neutralization. Furthermore, the spiral air duct improves the efficiency of conveying plastic chips. Attached Figure Description

[0017] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0018] Figure 1 This is a schematic diagram showing the position of the dust collection block installed on the milling machine in this utility model.

[0019] Figure 2 for Figure 1 A magnified view of A in the middle.

[0020] Figure 3 This is a structural diagram of the dust collection block in this utility model.

[0021] Figure 4 for Figure 3 A magnified view of B in the middle.

[0022] Figure 5 This is a diagram showing the internal structure of the dust collection block in this utility model.

[0023] Figure 6 This is a structural diagram of the cooling component in this utility model.

[0024] Figure 7 This is one of the structural diagrams of the spiral air duct in this utility model.

[0025] The attached diagram is labeled as follows: 10, suction block; 11, cover plate; 12, base; 13, suction nozzle; 14, guide tube; 20, spiral air duct; 30, cooling component; 31, liquid cooling pipe; 32, temperature conductive plate; 33, tee connector; 34, water inlet pipe; 40, electrostatic neutralization mesh plate. Detailed Implementation

[0026] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0027] This equipment is an improvement on an existing milling machine. The functions of the milling machine itself are not changed; only the improved components are installed on the tool holder of the milling machine.

[0028] Example 1

[0029] like Figures 1-6 This product includes a split-type dust collection block 10, specifically comprising a cover plate 11, a base 12, a dust collection nozzle 13, and a guide tube 14. The cover plate 11 and the base 12, located on the upper and lower sides respectively, can be closed together to form a cavity. The cover plate 11 and the base 12 are connected to the cutter holder of the milling cutter by threaded fasteners. The bottom of the base 12 is threadedly connected to the dust collection nozzle 13. The length of the dust collection nozzle 13 can be freely designed. The dust collection nozzle 13 is located on one side of the milling cutter and is used to promptly suck up the plastic chips generated by the milling cutter into the cavity. The guide tube 14 is welded to the base 12. A flexible pipe is connected to the guide tube 14 by a threaded connection. The other end of the flexible pipe is connected to the negative pressure equipment and the recovery chamber through a tee connector. The negative pressure equipment and the recovery chamber can be isolated by an isolation net to prevent recovered particles from entering the negative pressure equipment.

[0030] The connection method between the negative pressure equipment and the recovery bin is existing technology and will not be described in detail in this embodiment.

[0031] The working principle of the dust collection block 10: When the negative pressure air pump is powered on, the dust collection nozzle 13 sucks the shavings into the cavity of the cover plate 11 and the base 12 under the action of negative pressure, and then guides the plastic shavings into the recycling bin through the flexible pipe. Due to the presence of the isolation net, the plastic shavings will not enter the negative pressure air pump.

[0032] In an environment without a cooling structure, the temperature inside the cavity is high. Molten plastic chips entering the cavity from the suction nozzle 13 will gradually clump together and adhere to the suction nozzle 13 and the inner wall of the cavity as they pass through the suction nozzle 13.

[0033] This product solves the above problems by designing a cooling component 30.

[0034] The cooling component 30 includes a liquid cooling pipe 31, temperature-conducting fins 32, a tee connector 33, and water inlet pipes 34. An annular groove is formed on the arc surface of the base 12 of the column, and the liquid cooling pipe 31 is placed in the groove. Temperature-conducting fins 32 are evenly distributed on the liquid cooling pipe 31. One end of the temperature-conducting fins 32 extends through a through-hole in the base 12 and enters the cavity of the base 12, where the extended section of the temperature-conducting fins 32 is flattened and fitted to the bottom surface of the cavity. The liquid cooling pipe 31 is then connected to two water inlet pipes 34 via the tee connector 33. Both water inlet pipes 34 are connected to external cooling equipment. One water inlet pipe 34 is responsible for supplying condensate into the liquid cooling pipe 31, and the other water inlet pipe 34 is responsible for returning the condensate from the liquid cooling pipe 31 to the cooling equipment.

[0035] The aforementioned cooling equipment is a water-cooled condenser, which is a mature technology. The connection method between the condenser and the water inlet pipe 34 is also existing technology, so it will not be described in detail.

[0036] The cooling equipment continuously inputs and outputs condensate into the liquid cooling pipe 31, and the temperature-conducting plate 32 transfers low temperature from the pipe wall of the liquid cooling pipe 31 into the cavity of the cover plate 11 to reduce the temperature of the dust suction nozzle 13, the cavity, and the input end of the flexible pipe, so that the molten plastic chips can be quickly solidified and sucked into the recycling bin by negative pressure, reducing the probability of plastic chips sticking to the wall.

[0037] Example 2

[0038] like Figures 1-7 Based on the above embodiments, a spiral air duct 20 is also designed to improve the speed and smoothness of plastic chips entering the recycling bin.

[0039] In the first embodiment of this example, the spiral air duct 20 includes a bowl-shaped shell with an open top. The interior of the shell is connected to a spiral plate structure. The bottom surface of the shell contacts the extension of the heat-conducting plate 32, which can cool the plastic chips while using the spiral flow guiding structure to accelerate the smooth flow of the plastic chips into the recycling bin.

[0040] In the first embodiment, in order to improve the sealing performance of the connection between the housing and the guide tube 14, a sealing ring is attached to the opening of the arc surface of the cup-shaped housing. The sealing ring is located at the edge of the guide tube 14 to ensure the stability of the negative pressure effect when plastic chips are output from the guide tube 14.

[0041] In the second embodiment of this invention, the spiral duct 20 is a spiral-shaped pipe. One end of the pipe is connected to the interface of the suction nozzle 13, and the other end is connected to the guide tube 14. The connection method involves inserting the end of the pipe into the corresponding suction nozzle 13 and guide tube 14. A sealing ring is fitted on the end of the pipe to ensure the sealing of the connection. This also achieves the purpose of spirally accelerating the conveying of plastic chips within the cavity.

[0042] In the second embodiment, the diameter of the chip inlet end of the pipe fitting can be designed to be smaller than the diameter of the chip outlet end. The advantage of this design is that it creates a local low-pressure zone at the inlet of the pipe fitting, which enhances the initial capture capability of lightweight plastic chips; and increases the flow cross-sectional area at the outlet of the pipe fitting, preventing high-speed airflow from carrying plastic chips and causing them to stick to the pipe wall.

[0043] The aforementioned spiral air ducts 20 can all be produced using 3D printing technology, which is efficient and fast.

[0044] It should be noted that the two ends of the pipe smoothly transition to the corresponding suction nozzle 13 and guide tube 14.

[0045] Example 3

[0046] like Figures 1-6 Based on Example 1 or Example 2, in order to reduce the problem of plastic chips adsorbing on the inner wall of the cavity and spiral air duct 20 due to electrostatic effect, the following design is also provided.

[0047] An electrostatic neutralization mesh plate 40 is welded at the entrance of the base 12. The electrostatic neutralization mesh plate 40 grounds the charge through conductive rings and wires arranged inside the base 12. The electrostatic neutralization mesh plate 40 is located between the base 12 and the suction nozzle 13. When the negative pressure equipment is turned on, the plastic chips entering the cavity from the suction nozzle 13 will pass through the holes on the electrostatic neutralization mesh plate 40. The plastic chips that come into contact with the hole wall will be neutralized by electrostatic electricity, so as to reduce the impact of electrostatic adsorption on chip adhesion to the wall.

[0048] It should be noted that the conductive ring is embedded in the cover plate 11.

[0049] The material for the electrostatic neutralization mesh 40 can be bare stainless steel mesh, nickel-plated stainless steel mesh, gold-plated copper mesh, or other materials.

[0050] Based on the above embodiments, this product can be used to remove plastic chips generated during the milling of water glue nozzles on plastic parts. During the removal process, it can avoid the chip sticking to the wall due to overheating, reduce the probability of plastic chips sticking to the wall due to static electricity by using electrostatic neutralization, and improve the efficiency of conveying plastic chips by using the spiral air duct 20.

[0051] The aforementioned pipe for discharging chips is connected to the milling machine via clamps. The connection method of the clamps and the design position of the pipes are existing technologies and can be designed according to specific usage conditions. This application will not elaborate on them here.

[0052] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. An apparatus for removing a gate burr using a milling cutter, characterized by, The utility model relates to a dust suction block (10) for connecting with the tool holder of a milling machine, wherein the dust suction block (10) has a cavity in the interior, a dust suction port and a dust outlet on the side, the dust suction port faces downward and is located on one side of the milling cutter, and the dust outlet is in communication with a recovery bin and a negative pressure device in sequence. The cooling member (30) comprises a liquid cooling pipe (31), a temperature guide sheet (32), a three-way joint (33) and two water guide pipes (34), the liquid cooling pipe (31) is wrapped around the outer wall of the cavity, the temperature guide sheet (32) is sleeved on the liquid cooling pipe (31), one end of the temperature guide sheet (32) extends to penetrate into the inner wall of the cavity, the liquid cooling pipe (31) is in communication with the two water guide pipes (34) through the three-way joint (33), and the two water guide pipes (34) are in communication with the water outlet pipe and the water inlet pipe of a condenser. The negative pressure device and the condenser are electrically connected with a controller. The extension section of the temperature guide sheet (32) and the side wall of the cavity are sealed by a colloid.

2. The apparatus for removing a nozzle burr using a milling cutter according to claim 1, wherein A spiral air duct (20) is arranged in the cavity, the two ends of the spiral air duct (20) are in communication with the dust suction port and the dust outlet of the cavity respectively, and the spiral air duct (20) is arranged in a spiral shape.

3. The apparatus for removing a nozzle burr using a milling cutter according to claim 1, wherein The spiral air duct (20) comprises a bowl-shaped shell and a plate bent into a spiral shape, the plate is fixedly connected to the interior of the bowl-shaped shell, and the outer side of the bowl-shaped shell is pressed on the extension sections of the temperature guide sheets (32).

4. The apparatus for removing a nozzle burr using a milling cutter according to claim 3, wherein The spiral air duct (20) is a spiral pipe structure, the two ends of the pipe are inserted into the dust suction port and the dust outlet of the cavity respectively, and the pipe is smoothly connected with the corresponding dust suction port and dust outlet.

5. The apparatus for removing the residual glue of the sprue using the milling cutter according to claim 3, wherein, The caliber of the chip entry end of the spiral air duct (20) is smaller than the caliber of the chip exit end.

6. The apparatus for removing a nozzle burr using a milling cutter according to claim 5, wherein An electrically conductive ring is connected to the dust suction port of the cavity, a wire is arranged in the inner wall of the cavity, the wire is used for grounding the electrically conductive ring, and a metal electrostatic neutralization mesh plate (40) is connected to the electrically conductive ring.

7. The apparatus for removing a nozzle burr using a milling cutter according to claim 1, wherein The dust suction block (10) comprises a cover plate (11), a base (12), a dust suction nozzle (13) and a guide-off pipe (14), the cover plate (11) and the base (12) are detachably connected through threaded fasteners and the tool holder, the cover plate (11) and the base (12) cover a cavity, the bottom of the base (12) is threadedly connected with the dust suction nozzle (13), the side wall of the base (12) is in communication with the guide-off pipe (14), and the guide-off pipe (14) is in communication with the recovery bin and the negative pressure device through a flexible pipeline.

8. The apparatus for removing the residual glue of the sprue by using the milling cutter according to any one of claims 1-7, characterized in that, The output end of the negative pressure device, the recovery bin and the flexible pipeline are in communication through a three-way joint, and an isolation net for isolating plastic chips is arranged between the output end of the negative pressure device and the recovery bin.

9. The apparatus for removing a nozzle burr using a milling cutter according to claim 8, wherein ​

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