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CN-115890349-B - Plastic hot runner mold processing and online measurement integrated equipment and processing method thereof

CN115890349BCN 115890349 BCN115890349 BCN 115890349BCN-115890349-B

Abstract

The invention discloses an integrated device for processing and online measuring a plastic hot runner mold and a processing method thereof, wherein the integrated device comprises a lathe bed base, a clamping seat sliding table mechanism, a stand column beam mechanism, a turret sliding block mechanism, a probe part and auxiliary devices such as hydraulic, cooling, pneumatic, lubricating and chip removing devices, wherein a main clamping seat part and a hydraulic center frame part are fixedly arranged on the lathe bed base in a sliding manner; the invention relates to a measuring device, which comprises a machine tool body, a column beam mechanism, a grating ruler, a Z-direction roller linear guide rail, a measuring probe component, a measuring head and a tool setting instrument, wherein the column beam mechanism is vertically arranged above the machine tool body base and is provided with the grating ruler and the Z-direction roller linear guide rail, the measuring probe component is arranged on the tool setting instrument and can slide across a hydraulic center frame along the Z-direction guide rail, the left end face and the right end face of a hot runner mold are measured, measured data are fed back to a numerical control system through the grating ruler, machining allowance is automatically calculated, and the tool setting instrument is arranged on a column beam at the right end of the machine tool.

Inventors

  • KANG CHUANYONG
  • WANG MULAN
  • GENG YAN
  • Kang zhengyang
  • YIN JUN
  • FANG KE

Assignees

  • 南京嘉玺数控科技有限公司

Dates

Publication Date
20260512
Application Date
20221128

Claims (8)

  1. 1. The integrated equipment for processing and online measuring the plastic hot runner mold is characterized by comprising a machine tool base (1), wherein a clamping seat sliding table mechanism is arranged on the machine tool base (1), a main shaft clamping seat (6), a left floating support frame (8), a hydraulic center frame (11) and a right floating support frame (17) are arranged through the clamping seat sliding table mechanism, the main shaft clamping seat (6) and the hydraulic center frame (11) are used for fastening a workpiece, and the left floating support frame (8) and the right floating support frame (17) are lifting devices; The machine tool base (1) is also provided with a column beam mechanism, the column beam mechanism is arranged above the machine tool base, a Z-direction roller linear guide rail (25) is arranged through the column beam mechanism, a cutter tower sliding block mechanism is arranged on the Z-direction roller linear guide rail (25) in a sliding manner, a servo hydraulic cutter tower (33) and a measuring probe (39) arranged on the cutter tower sliding block mechanism can slide across a hydraulic center frame (11) under the action of a Z-direction ball screw pair (24) and a Z-direction servo motor (23), a grating ruler (26) is arranged on the column beam mechanism, the grating ruler (26) and the Z-direction roller linear guide rail (25) are parallel, the measuring probe (39) and the grating ruler (26) realize the measurement of workpiece machining precision, the length of a hot runner mold is detected online, measured data is fed back to a numerical control system of the machine tool, and the column beam mechanism is provided with a cutter setting gauge (27) at the opposite end of the servo hydraulic cutter tower (33) for the monitoring of cutter damage condition in the machining process; A push rod (34) is arranged on the servo hydraulic turret (33), and the push rod (34) is used for axially positioning the left end face of the plastic hot runner mold; The cooling device comprises a centrifugal pump (43) and a high-pressure oil pipe (44) connected with the centrifugal pump, wherein the centrifugal pump (43) respectively sends oil in a cooling liquid tank (42) to a servo hydraulic cutter tower through the high-pressure oil pipe (44) to cool and lubricate a cutter and a workpiece during processing, and sends the oil to a processing groove on a machine tool base for flushing scrap iron in the machine tool; the clamping seat sliding table mechanism comprises a main clamping seat assembly and a hydraulic center frame assembly; The main clamping seat assembly comprises a main clamping seat cushion (5), a main shaft clamping seat (6) and a left floating support frame (8), wherein the main clamping seat cushion (5) is fixedly arranged on the machine tool base (1), the main shaft clamping seat (6) is fixedly arranged on the main clamping seat cushion (5), and the left floating support frame (8) is positioned on the right side of the main shaft clamping seat (6); the hydraulic center frame assembly comprises a center frame sliding table (9), a center frame support plate (10), a hydraulic center frame (11), an adjusting and positioning support (14), a push block (12), a positioning cylinder (15) and a right floating support frame (17), wherein the center frame support plate (10) is fixedly arranged on the center frame sliding table (9), an adjusting gasket (16) is arranged between the center frame support plate (10) and the center frame sliding table (9), the adjusting and positioning support (14) is fixedly arranged on the center frame support plate (10), a waist-shaped groove is formed in the adjusting and positioning support (14), the positioning cylinder (15) drives the push block (12) to push the left end of a hot runner mold positioned on the left floating support frame (8) and the right floating support frame (17) into a main shaft clamping seat (6), and the hydraulic center frame (11) is fixedly arranged on the left side of the center frame support plate (10); the center frame sliding table (9) can move along the Y-direction roller linear guide rail and comprises a Y-direction transmission mechanism.
  2. 2. The integrated equipment for machining and online measurement of a plastic hot runner mold according to claim 1, wherein the Y-direction transmission mechanism comprises a Y-direction servo motor (18), a Y-direction ball screw pair (19) and a Y-direction roller linear guide rail (20), and the Y-direction ball screw pair (19) is driven by the Y-direction servo motor (18) so as to drive a hydraulic center frame assembly connected with the Y-direction transmission mechanism to move along the Y-direction roller linear guide rail (20).
  3. 3. The integrated equipment for processing and online measurement of the plastic hot runner mold according to claim 2 is characterized in that an air pressure normally closed guide rail clamp (21) is arranged on the Y-direction roller linear guide rail (20), and the air pressure normally closed guide rail clamp (21) is controlled by a numerical control system to realize the locking of any position of the center frame sliding table (9) on the Y-direction roller linear guide rail (20) through a pneumatic mechanism.
  4. 4. The integrated device for processing and online measurement of plastic hot runner dies according to claim 1, wherein the center frame support plate (10) is provided with a high-pressure universal spherical blowing nozzle (13), and the high-pressure universal spherical blowing nozzle (13) is used for drying and cleaning the end part of a workpiece in the process of processing the hot runner dies.
  5. 5. The integrated equipment for processing and online measurement of a plastic hot runner mold according to claim 1, wherein the turret slide block mechanism comprises a left cross slide plate (28), an X-direction transmission mechanism, an upper left slide plate (32), a servo hydraulic turret (33) and a probe component; The left cross slide plate (28) is arranged on the Z-direction roller linear guide rail (25) in a sliding manner to drive the turret slide block mechanism to slide along the Z direction, the left cross slide plate (28) is also provided with an X-direction roller linear guide rail (31), the X-direction transmission mechanism is arranged on the left cross slide plate (28), and the X-direction ball screw pair (30) is driven by the X-direction servo motor to drive the turret slide block mechanism to feed along the X-direction roller linear guide rail (31); the servo hydraulic turret (33) is fixed on the upper left slide plate (28), and the upper left slide plate (28) is fixedly connected to a nut of the X-direction ball screw pair (30) and can slide along the X-direction roller linear guide rail (31).
  6. 6. The integrated equipment for processing and online measurement of plastic hot runner dies according to claim 5, wherein the probe part comprises a probe bracket (36), a cylinder fixing plate (37), a rotary cylinder (38), a measurement probe (39), a swinging rod (40) and a probe protection cover (41), the probe part is fixedly arranged on a left upper sliding plate (32), and a probe bracket adjusting plate (35) is arranged in the middle.
  7. 7. The integrated equipment for processing and online measurement of the plastic hot runner mold according to claim 1 is characterized in that a main motor (2) and a photoelectric encoder (3) are arranged on a machine tool base (1), and the main motor (2) drives a main shaft clamping seat (6) to rotate through a synchronous belt (4) and drives the hot runner mold to rotate; The equipment is provided with a pneumatic lubrication control plate (45) through a column cross beam (22) and is used for lubricating a ball screw pair and a roller linear guide rail transmission part; The equipment is also provided with a pneumatic control mechanism for providing an air source for the positioning air cylinder, the probe protecting cover, the left floating support frame, the right floating support frame, the air pressure normally-closed guide rail clamp and the high-pressure universal spherical blowing nozzle, and a hydraulic control mechanism for controlling the clamping and loosening of the hydraulic center frame, the clamping and loosening of the main shaft clamping seat and the clamping and loosening of the servo hydraulic tool turret.
  8. 8. The hot runner mold processing method applied to the plastic hot runner mold processing and on-line measurement integrated equipment as claimed in claim 1 comprises equipment assembly and initial position setting, inputting the total length of a hot runner mold (7) to be processed and the blank length into a numerical control system, calculating and positioning the Y-direction position of a center frame sliding table (9) by the system, placing the hot runner mold (7) on a left floating support frame (8) and a right floating support frame (17) and starting processing operation, and is characterized by further comprising the following steps: S1, controlling a hydraulic center frame (11) to continuously move along a Y direction for a set distance, enabling a hot runner mold (7) to be pushed into a main shaft clamping seat (6), then driving a push block (12) to push the hot runner mold (7) by a positioning cylinder (15), enabling a push rod (34) on a servo hydraulic cutter tower (33) to realize axial positioning of the hot runner mold (7), enabling the main shaft clamping seat (6) and the hydraulic center frame (11) to clamp the hot runner mold (7), enabling a left floating support frame (8) and a right floating support frame (17) to descend, and enabling the positioning cylinder (15) to retreat to the original position; s2, firstly measuring one point at the left end of the hot runner mold (7) by a measuring probe (39), measuring the upper and lower two points of the right end surface of the hot runner mold (7) by a turret sliding block mechanism along a Z-direction roller linear guide rail (25) crossing a hydraulic center frame (11), judging whether the flatness of the right end of the hot runner mold (7) is within 0.02mm, if the difference is greater than 0.02mm, controlling the equipment to alarm and stop working, and if the difference is less than 0.02mm, performing next running cutting by the equipment; S3, enabling the turret sliding block mechanism to return to the left end of the hot runner mold (7) along the Z-direction roller linear guide rail (25), calculating the end face cutting width by a numerical control system, cutting off the hot runner mold (7) by a cutter, reserving a semi-finish machining allowance of 0.5mm, finish-turning the end face by an external turning tool, and reserving a finish machining allowance of 0.3 mm; S4, firstly measuring one point at the left end of the hot runner mold (7) by a measuring probe (39), measuring the upper and lower points at the right end surface of the hot runner mold (7) by a numerical control system along a Z-direction roller linear guide rail (25) with the measuring probe (39), calculating the finish machining allowance by the equipment, and performing next running and cutting; s5, the turret sliding block mechanism returns to the left end of the hot runner mold (7) along a Z-direction roller linear guide rail (25), the system automatically calculates the end face cutting width, and the excircle turning tool finely turns the end face, so that the total length size is ensured to be within the tolerance range of 0.02mm, and the surface roughness is less than or equal to Ra1.6mu m; S6, firstly measuring one point at the left end of the hot runner mold (7) by a measuring probe (39), then measuring the upper point and the lower point of the right end surface of the hot runner mold (7) by a cutter tower sliding block mechanism along a Z-direction roller linear guide rail (25) and crossing a hydraulic center frame (11), calculating the total length of the hot runner mold (7) by a numerical control system, judging whether the tolerance is within 0.02mm, and alarming by equipment if the difference is greater than 0.02mm, and cutting by the equipment if the difference is less than 0.02 mm; s7, processing an inner hole sinking table and screw teeth at the left end of the hot runner mold (7), wherein coaxiality of the inner hole and the outer circle is controlled to be within 0.02mm, verticality of the bottom surface of the inner hole and the outer circle is controlled to be within 0.02mm, and surface roughness of the bottom surface of the inner hole sinking table is less than or equal to Ra1.6mu m; S8, the main shaft clamping seat (6) and the hydraulic center frame (11) loosen the hot runner mold (7), the left floating support frame (8) and the right floating support frame (17) ascend to support the hot runner mold, the hydraulic center frame (11) retreats to a set distance, and the hot runner mold (7) is taken down.

Description

Plastic hot runner mold processing and online measurement integrated equipment and processing method thereof Technical Field The invention relates to machining equipment, belongs to the technical field of machining, and particularly relates to plastic hot runner mold machining and on-line measurement integrated equipment and a machining method thereof. Background The plastic hot runner mold is an important mold developed and manufactured in the injection molding field and is widely applied to the industries of automobiles, electronics, packaging, household appliances, medical treatment, food and the like. When large curved surface products such as automobile bumpers, instrument panels and the like are formed, the plastic hot runner mold is complex in structure, a sequential valve type gate hot runner is mainly adopted at present, and hot runner nozzles in the same form are required to be manufactured into series with different length and size. The processing precision directly influences the quality and the appearance of the product, and the form and position tolerance is generally required to be in the range of 0.005-0.02 mm. The total length error of the two ends after processing is controlled within 0.02mm, the processing requirement is high, the existing production process is to detach the hot runner mold for measurement after processing, the hot runner mold is required to be clamped again for processing and measurement without the detection precision within the tolerance range, and the actions are repeated, so that the total length precision is controlled. And the repeated positioning accuracy is poor, the processing efficiency is low, and the product qualification rate is low. Disclosure of Invention The invention aims to solve the problems of inaccurate total length and insufficient degree of automation of a hot runner mold, and provides high-efficiency and accurate machining and online measurement integrated equipment for a plastic hot runner mold. The technical scheme is that the plastic hot runner mold processing and on-line measurement integrated equipment comprises a machine tool base, wherein a clamping seat sliding table mechanism is arranged on the machine tool base, a main shaft clamping seat, a left floating support frame, a hydraulic center frame and a right floating support frame are arranged through the clamping seat sliding table mechanism, the main shaft clamping seat and the hydraulic center frame are used for fastening a workpiece, and the left floating support frame and the right floating support frame are lifting devices; the machine tool base is also provided with a stand column beam mechanism, the stand column beam mechanism is arranged above the machine tool base, a Z-direction roller linear guide rail is arranged through the stand column beam mechanism, a cutter tower sliding block mechanism is arranged on the Z-direction roller linear guide rail in a sliding manner, a servo hydraulic cutter tower and a measuring probe which are arranged on the cutter tower sliding block mechanism can slide across a hydraulic center frame under the action of a Z-direction ball screw pair and a Z-direction servo motor, a grating ruler is arranged on the stand column beam mechanism and is parallel to the Z-direction roller linear guide rail, the measuring probe and the grating ruler realize the measurement of workpiece machining precision, and measured data are fed back to a numerical control system of the machine tool, and a cutter setting instrument is arranged at the opposite end of the servo hydraulic cutter tower by the stand column beam mechanism and is used for automatic monitoring of the damage condition of a cutter in the machining process; The device is also provided with a cooling device, the cooling device comprises a centrifugal pump and a high-pressure oil pipe connected with the centrifugal pump, the centrifugal pump is used for conveying cooling liquid in a cooling liquid tank to a servo hydraulic cutter tower respectively through two high-pressure oil pipes to cool and lubricate a cutter and a workpiece during processing and conveying the cutter and the workpiece to a processing groove on a machine tool base to flush scrap iron in the machine tool. Further, the clamping seat sliding table mechanism comprises a main clamping seat assembly and a hydraulic center frame assembly; The main clamping seat assembly comprises a main clamping seat cushion, a main shaft clamping seat and a left floating support frame, wherein the main clamping seat cushion is fixedly arranged on a machine tool base, the main shaft clamping seat is fixedly arranged on the main clamping seat cushion, and the left floating support frame is positioned on the right side of the main shaft clamping seat; The hydraulic center frame assembly comprises a center frame sliding table, a center frame support plate, a hydraulic center frame, an adjusting and positioning bracket, a push block, a positioning cylinder and a