Multiplane injection molded part gate machining apparatus

Abstract

This invention relates to a sprue processing device for multi-plane injection molded parts, comprising a worktable, a sprue processing unit mounted above the worktable, a ceiling support, and a transverse drive mechanism mounted on the ceiling support. The transverse drive mechanism includes multiple transverse drive units, which are connected to a longitudinal drive unit below the ceiling support. The longitudinal drive unit is also connected to the sprue processing unit. The sprue processing unit includes a rotary sprue cutter and a cutter drive unit. The cutter drive unit drives the rotary sprue cutter to cut the sprues on the injection molded part on the worktable. This invention employs an automated sprue processing solution capable of simultaneously processing sprues on different planes of the injection molded part, featuring high processing efficiency and stable processing quality.

Description

Technical Field

[0001] This invention relates to a sprue processing device for injection molded parts, and more particularly to a sprue processing device for multi-plane injection molded parts, belonging to the field of sprue processing for injection molded parts. Background Technology

[0002] Injection molded parts are plastic products mass-produced using molding. The sprue is the residual material in the gating system that remains integrated with the injection molded part during the injection molding process. Currently, the main methods for removing sprues from injection molded parts are: first, cutting off the material from the injection molded part within the gating system; then, manually trimming the sprue using scissors or a craft knife; and finally, sanding the trimmed sprue to create a smooth surface. However, this manual processing method is not only labor-intensive but also results in significant variations in individual product quality, leading to inconsistent quality. Furthermore, it is particularly labor-intensive when processing surfaces with multiple planes of varying heights, each with a sprue, and the inconsistent quality of the sprues across different heights is easily observed, affecting the product's surface appearance. Summary of the Invention

[0003] The present invention discloses a new solution for a multi-plane injection molding part sprue processing device. It adopts an automated injection molding part sprue processing solution that can process sprues on different planes of the injection molding part simultaneously, which solves the problems of high production costs, unstable processing quality and low processing efficiency caused by manual processing in existing similar solutions.

[0004] The present invention provides a multi-plane injection molding part sprue processing device, which includes a device worktable. A sprue processing device is provided above the device worktable. The sprue processing device includes a ceiling support. A horizontal drive mechanism is provided on the ceiling support. The horizontal drive mechanism includes multiple horizontal drive units. The horizontal drive units are drivenly connected to a vertical drive unit below the ceiling support. The vertical drive unit is drivenly connected to the sprue processing unit. The sprue processing unit includes a rotary sprue cutter and a cutter drive unit. The cutter drive unit drives the rotary sprue cutter to cut the sprue on the injection molding part on the device worktable.

[0005] Furthermore, the cutter drive unit of this solution includes a cutter rotation mechanism and a cutter lifting mechanism. The cutter rotation mechanism includes a cutter rotation mechanism housing, inside which is a cutter rotation motor. The output end of the cutter rotation motor is equipped with a driving bevel gear, which meshes with a driven bevel gear on the cutter rotation column. The lower end of the cutter rotation column, which extends out of the bottom of the cutter rotation mechanism housing, is connected to the top of the cutter lifting mechanism housing. The upper part of the cutter lifting mechanism housing is equipped with a cutter lifting motor, the output end of which is connected downward to a cutter lifting screw. The cutter lifting screw and the cutter lifting shaft sleeve form a threaded transmission connection. The outer side of the cutter lifting shaft sleeve is connected to a lifting guide rail on the lower inner side of the cutter lifting mechanism housing. One end of the cutter lifting shaft sleeve extending downward out of the cutter lifting mechanism housing is connected to the top of the rotary sprue cutter.

[0006] Furthermore, the rotary sprue cutter of this solution includes a cylindrical shell with vertical sprue grooves on its side. The bottom processing end of the cylindrical shell includes a cutting and grinding end face and a cleaning end face. A rotary cutter is provided on the edge where the cutting and grinding end face intersects with the sprue groove opening. A grinding disc hole is opened on the cutting and grinding end face, and a grinding disc is provided in the grinding disc hole. The grinding disc is driven and connected to a grinding motor in the cylindrical shell. A flexible fiber bundle is provided on the cleaning end face. The cutter drive unit drives the rotary sprue cutter to rotate. The rotary cutter cuts out the sprue in the sprue groove. The grinding disc, driven by the grinding motor, rotates over the sprue cut root for grinding and smoothing. The flexible fiber bundle rotates over the ground sprue cut root for cleaning.

[0007] Furthermore, the cutting and grinding end face of the grinding disc hole in this solution is densely covered with dust suction holes, and the cleaning end face is also densely covered with dust suction holes. The inner cavity of the cylindrical shell is connected to an external negative pressure source. The external negative pressure source generates negative pressure in the inner cavity of the cylindrical shell, and the negative pressure in the cylindrical shell sucks up the debris particles generated by cutting and grinding through the dust suction holes.

[0008] Furthermore, a positioning sensor is provided on the bottom edge of the side of the cylindrical housing corresponding to the cutting and grinding end face of this solution. The positioning sensor includes a contact sensor plate at the bottom. The horizontal position of the contact sensor plate is lower than the horizontal position of the grinding surface of the grinding disc by a preset value. The contact sensor plate contacts the end face of the injection molded part with the sprue to trigger the cutter drive unit to stop adjusting the height position of the rotary sprue cutter.

[0009] Furthermore, the transverse drive unit of this solution includes a transverse motor, the output end of which is connected to a transverse screw drive, the transverse screw and the longitudinal beam form a threaded drive connection, the front and rear ends of the base plate of the ceiling bracket are provided with transverse sliding grooves, the base plate of the ceiling bracket between the transverse sliding grooves is provided with a travel through groove, the two ends of the longitudinal beam form a guide sliding connection with the transverse sliding groove, and the bottom of the longitudinal beam is connected to the longitudinal drive unit through a connecting stiffener plate passing through the travel through groove.

[0010] Furthermore, the longitudinal drive unit of this solution includes a longitudinal drive unit housing, the top of which is connected to a connecting rib plate. A longitudinal motor is provided at one end of the longitudinal drive unit housing, the output end of which is connected to a longitudinal screw drive. The longitudinal screw and the longitudinal slider form a threaded drive connection. At least one side of the longitudinal slider forms a guide sliding connection with the longitudinal guide bar on the opposite side of the longitudinal drive unit housing. One end of the longitudinal slider extending out of the bottom of the longitudinal drive unit housing is connected to the sprue processing unit.

[0011] The multi-plane injection molding part gate processing device of the present invention adopts an automated injection molding part gate processing scheme that can process gates on different planes of the injection molding part simultaneously, and has the characteristics of high processing efficiency and stable processing quality. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a sprue processing device for multi-plane injection molded parts.

[0013] Figure 2 This is a schematic diagram of the sprue processing device in state one.

[0014] Figure 3 This is a schematic diagram of the ceiling support and the horizontal drive mechanism.

[0015] Figure 4 This is a front view internal schematic diagram of the longitudinal drive unit and the sprue processing unit.

[0016] Figure 5 This is a left-side internal view of the longitudinal drive unit and the sprue processing unit.

[0017] Figure 6 This is a bottom view of a rotary sprue cutter.

[0018] Among them, 100 is the device workbench, 200 is the ceiling support, 300 is the transverse drive unit, 310 is the transverse motor, 320 is the transverse screw, 330 is the longitudinal beam, 331 is the connecting stiffener, 341 is the transverse slide, 350 is the stroke through slot, 400 is the longitudinal drive unit, 410 is the longitudinal drive unit housing, 411 is the longitudinal guide bar, 420 is the longitudinal motor, 430 is the longitudinal screw, 440 is the longitudinal slider, 500 is the sprue processing unit, 600 is the rotary sprue cutter, 610 is the cylindrical housing, 611 is the sprue groove, and 620 is the cutting and grinding end. 621 is the rotary cutter, 622 is the grinding disc, 623 is the grinding motor, 630 is the cleaning end face, 631 is the flexible fiber bundle, 632 is the suction hole, 640 is the positioning sensor, 641 is the contact sensor plate, 700 is the cutter drive unit, 710 is the cutter rotation mechanism housing, 720 is the cutter rotation motor, 721 is the driving bevel gear, 730 is the cutter rotation column, 731 is the driven bevel gear, 741 is the cutter lifting mechanism housing, 742 is the cutter lifting motor, 743 is the cutter lifting screw, 744 is the cutter lifting shaft sleeve, and 800 is the sprue. Detailed Implementation

[0019] like Figure 1 As shown, the multi-plane injection molding part sprue processing device of the present invention includes a device worktable, a sprue processing device above the device worktable, a ceiling support, a transverse drive mechanism on the ceiling support, a transverse drive mechanism including multiple transverse drive units, the transverse drive units being drively connected to a longitudinal drive unit below the ceiling support, and the longitudinal drive unit being drively connected to the sprue processing unit. The sprue processing unit includes a rotary sprue cutter and a cutter drive unit. The cutter drive unit drives the rotary sprue cutter to cut the sprues on the injection molding part on the device worktable. The above solution adopts an automated injection molding part sprue processing scheme that can simultaneously process sprues on different planes of the injection molding part. The transverse drive unit and the longitudinal drive unit are used to adjust the transverse and longitudinal positions of the sprue processing unit, and the cutter drive unit is used to drive the rotary sprue cutter to cut the sprues on the injection molding part on the device worktable. Figure 2 As shown, this solution utilizes multiple sets of transverse drive units, longitudinal drive units, and sprue processing units to simultaneously process sprues on planes with different heights on injection molded parts. Simply adjust the rotary sprue cutter above the corresponding sprue to the appropriate height, and then operate synchronously to efficiently complete the processing task. Therefore, this solution significantly improves processing efficiency and ensures stable processing quality.

[0020] To realize the functions of the cutter drive unit, it is necessary to achieve rotation drive and lifting drive, such as Figure 4 , 5As shown, the cutter drive unit of this solution includes a cutter rotation mechanism and a cutter lifting mechanism. The cutter rotation mechanism includes a cutter rotation mechanism housing, inside which is a cutter rotation motor. A driving bevel gear is located on the output end of the cutter rotation motor, meshing with a driven bevel gear on the cutter rotation column. The lower end of the cutter rotation column, extending from the bottom of the cutter rotation mechanism housing, is connected to the top of the cutter lifting mechanism housing. A cutter lifting motor is located in the upper part of the cutter lifting mechanism housing, with its output end connected downwards to a cutter lifting screw. The cutter lifting screw and the cutter lifting shaft sleeve form a threaded connection. The outer side of the cutter lifting shaft sleeve forms a guide sliding connection with a lifting guide rail on the lower inner side of the cutter lifting mechanism housing. One end of the cutter lifting shaft sleeve extending downwards from the cutter lifting mechanism housing is connected to the top of the rotary sprue cutter. The cutter lifting mechanism drives the rotary sprue cutter to adjust its position up and down to find the cutting position, while the cutter rotation mechanism drives the rotary sprue cutter to rotate and complete the cutting operation.

[0021] To achieve the function of a rotary sprue cutter and efficiently complete the cutting, grinding, and cleaning processes, such as... Figure 4 , 6 As shown, the rotary sprue cutter of this solution includes a cylindrical shell with vertically oriented sprue grooves on its side. The bottom processing end of the cylindrical shell includes a cutting and grinding end face and a cleaning end face. A rotary cutter is provided on the edge where the cutting and grinding end face intersects with the sprue groove opening. A grinding disc hole is opened on the cutting and grinding end face, and a grinding disc is installed in the grinding disc hole. The grinding disc is driven by a grinding motor inside the cylindrical shell. A flexible fiber bundle is provided on the cleaning end face. The cutter drive unit drives the rotary sprue cutter to rotate, and the rotary cutter cuts the sprue in the sprue groove. The grinding disc, driven by the grinding motor, rotates over the sprue cut root for grinding and smoothing. The flexible fiber bundle rotates over the smoothed sprue cut root for cleaning. Based on the above solution, in order to achieve the technical objective of dust removal simultaneously during the cutting, grinding, and cleaning processes, such as... Figure 6 As shown, the cutting and grinding end face of the grinding disc hole in this solution is densely covered with dust suction holes, and the cleaning end face is also densely covered with dust suction holes. The inner cavity of the cylindrical shell is connected to an external negative pressure source. The external negative pressure source generates negative pressure in the inner cavity of the cylindrical shell, and the negative pressure in the cylindrical shell sucks up the debris particles generated by cutting and grinding through the dust suction holes.

[0022] To facilitate control of the height of the rotating cutter and grinding disc from the base of the sprue, and to avoid incomplete cutting and grinding or damage to the surface around the sprue, such as... Figure 4 , 6As shown, a positioning sensor is provided on the bottom edge of the side of the cylindrical housing corresponding to the cutting and grinding end face of this solution. The positioning sensor includes a contact sensor plate at the bottom. The horizontal position of the contact sensor plate is lower than the horizontal position of the grinding surface of the grinding disc by a preset value. The contact sensor plate contacts the end face of the injection molded part with the sprue to trigger the cutter drive unit to stop adjusting the height position of the rotary sprue cutter.

[0023] To realize the function of the lateral drive unit, such as Figure 2 , 3 As shown, the transverse drive unit of this solution includes a transverse motor. The output end of the transverse motor is connected to a transverse screw drive. The transverse screw is connected to the longitudinal beam frame via a threaded drive. The front and rear ends of the ceiling support's base plate are provided with transverse sliding grooves. A travel through groove is provided on the base plate of the ceiling support between the transverse sliding grooves. Both ends of the longitudinal beam frame are connected to the transverse sliding grooves via a guide sliding connection. The bottom of the longitudinal beam frame is connected to the longitudinal drive unit via a connecting stiffener passing through the travel through groove. Based on the above solution, to achieve the function of the longitudinal drive unit, such as... Figure 4 , 5 As shown, the longitudinal drive unit of this solution includes a longitudinal drive unit housing. The top of the longitudinal drive unit housing is connected to a connecting stiffener. A longitudinal motor is provided at one end of the longitudinal drive unit housing. The output end of the longitudinal motor is connected to a longitudinal screw drive. The longitudinal screw and the longitudinal slider form a threaded drive connection. At least one side of the longitudinal slider forms a guide sliding connection with the longitudinal guide bar on the opposite side of the longitudinal drive unit housing. One end of the longitudinal slider extending out of the bottom of the longitudinal drive unit housing is connected to the sprue processing unit.

[0024] Unless otherwise specified, the devices, mechanisms, and components disclosed in this solution can all be implemented using common and conventional solutions known in the art. The multi-plane injection molding part gate processing device of this solution is not limited to the content disclosed in the specific embodiments. The technical solutions appearing in the embodiments can be extended based on the understanding of those skilled in the art, and simple substitutions made by those skilled in the art based on this solution and common knowledge also fall within the scope of this solution.

Claims

1. A sprue processing device for multi-plane injection molded parts, characterized in that: The device includes a workbench, above which is a sprue processing device. The sprue processing device includes a ceiling support, on which is a horizontal drive mechanism. The horizontal drive mechanism includes multiple horizontal drive units, which are connected to a vertical drive unit below the ceiling support. The vertical drive unit is connected to the sprue processing unit. The sprue processing unit includes a rotary sprue cutter and a cutter drive unit. The cutter drive unit drives the rotary sprue cutter to cut off the sprues on the injection molded parts on the workbench. The rotary sprue cutter includes a cylindrical housing with vertically oriented sprue grooves on its side. The bottom processing end of the cylindrical housing includes a cutting and grinding end face and a cleaning end face. A rotary cutter is located on the edge where the cutting and grinding end face intersects with the sprue groove opening. A grinding disc hole is formed on the cutting and grinding end face, and a grinding disc is installed inside the grinding disc hole. The grinding disc is connected to a grinding motor inside the cylindrical housing. A flexible fiber bundle is provided on the cleaning end face. The cutter drive unit drives the rotary sprue cutter to rotate. The rotary cutter cuts out the sprue from the sprue groove. The grinding disc, driven by the grinding motor, rotates past the sprue cutter root for smoothing. The flexible fiber bundle rotates past the smoothed sprue cutter root for cleaning.

2. The multi-plane injection molding part sprue processing device according to claim 1, characterized in that, The cutter drive unit includes a cutter rotation mechanism and a cutter lifting mechanism. The cutter rotation mechanism includes a cutter rotation mechanism housing, inside which is a cutter rotation motor. A driving bevel gear is located on the output end of the cutter rotation motor, and this driving bevel gear meshes with a driven bevel gear on the cutter rotation column. The lower end of the cutter rotation column, extending out from the bottom of the cutter rotation mechanism housing, is connected to the top of the cutter lifting mechanism housing. A cutter lifting motor is located in the upper part of the cutter lifting mechanism housing, and its output end is connected downwards to a cutter lifting screw. The cutter lifting screw is threadedly connected to a cutter lifting shaft sleeve. The outer side of the cutter lifting shaft sleeve is guided and slidably connected to a lifting guide rail on the lower inner side of the cutter lifting mechanism housing. One end of the cutter lifting shaft sleeve extending downwards from the cutter lifting mechanism housing is connected to the top of the rotary sprue cutter.

3. The multi-plane injection molding part sprue processing device according to claim 1, characterized in that, The cutting and grinding end face around the grinding disc hole is densely covered with dust suction holes, and the cleaning end face is densely covered with dust suction holes. The inner cavity of the cylindrical shell is connected to an external negative pressure source. The external negative pressure source generates negative pressure in the inner cavity of the cylindrical shell. The negative pressure in the cylindrical shell sucks up the debris particles generated by cutting and grinding through the dust suction holes.

4. The multi-plane injection molding part sprue processing device according to claim 1, characterized in that, A positioning sensor is provided on the bottom edge of the side of the cylindrical housing corresponding to the cutting and grinding end face. The positioning sensor includes a bottom contact sensor piece. The horizontal position of the contact sensor piece is lower than the horizontal position of the grinding surface of the grinding disc by a preset value. The contact sensor piece contacts the end face of the injection molded part with the sprue to trigger the cutter drive unit to stop adjusting the height position of the rotary sprue cutter.

5. The multi-plane injection molding part sprue processing device according to claim 1, characterized in that, The transverse drive unit includes a transverse motor, the output end of which is connected to a transverse screw drive. The transverse screw is connected to the longitudinal beam frame via a threaded drive. The front and rear ends of the base plate of the ceiling bracket are provided with transverse sliding grooves. The base plate of the ceiling bracket between the transverse sliding grooves is provided with a travel through groove. The two ends of the longitudinal beam frame are connected to the transverse sliding grooves via a guide sliding connection. The bottom of the longitudinal beam frame is connected to the longitudinal drive unit via a connecting stiffener passing through the travel through groove.

6. The multi-plane injection molding part sprue processing device according to claim 5, characterized in that, The longitudinal drive unit includes a longitudinal drive unit housing. The top of the longitudinal drive unit housing is connected to the connecting rib plate. A longitudinal motor is provided at one end of the longitudinal drive unit housing. The output end of the longitudinal motor is connected to a longitudinal screw drive. The longitudinal screw and the longitudinal slider form a threaded drive connection. At least one side of the longitudinal slider forms a guide sliding connection with a longitudinal guide bar on the opposite side of the longitudinal drive unit housing. One end of the longitudinal slider extending out of the bottom of the longitudinal drive unit housing is connected to the sprue processing unit.

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