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CN-121973375-A - Trimming device for manufacturing rubber products

CN121973375ACN 121973375 ACN121973375 ACN 121973375ACN-121973375-A

Abstract

The invention belongs to the technical field of trimming treatment of rubber products, in particular to a trimming device for manufacturing rubber products, which comprises a machine case and a mounting frame which is rotated by a driving mechanism, wherein a processing boss is fixedly connected to the inner wall of the bottom of the machine case, the top end of the processing boss is of a convex structure for placing a rubber ring, the bottom end of the mounting frame is fixedly connected with an electric push rod, an output shaft of the electric push rod is fixedly connected with a tool rest, and a replaceable trimming tool is arranged on the tool rest. According to the invention, the convex structure of the processing boss is matched with the rotary trimming cutter, so that the cutter always moves along the edge track of the rubber ring, and the electric push rod pushes the trimming cutter to gradually approach the rubber ring, so that trimming is realized, and the phenomenon that the cutter and the root of the hard block form instant impact in the prior art, so that the edge is broken or the rubber ring is damaged is avoided.

Inventors

  • LI CHUNPENG
  • WANG YONG
  • LEI XUANFENG

Assignees

  • 苏州安笠宏电子科技有限公司

Dates

Publication Date
20260505
Application Date
20260130

Claims (10)

  1. 1. The utility model provides a trimming device for rubber goods manufacturing, includes quick-witted case (1) and rotates mounting bracket (3) through actuating mechanism, its characterized in that, the bottom inner wall fixedly connected with processing boss (2) of machine case (1), the top of processing boss (2) is for the convex structure that is used for placing the rubber circle, the bottom fixedly connected with electricity push rod (4) of mounting bracket (3), the output shaft fixedly connected with knife rest (5) of electricity push rod (4), install removable deburring sword (6) on knife rest (5).
  2. 2. The trimming device for manufacturing rubber products according to claim 1, further comprising a fixing mechanism, wherein the fixing mechanism comprises a hydraulic cylinder (8) fixedly connected to the top end of the machine case (1), and an output shaft of the hydraulic cylinder (8) extends into the machine case (1) and is fixedly connected with a gland (9) capable of being sleeved on the top end of the processing boss (2).
  3. 3. The trimming device for manufacturing rubber products according to claim 2, wherein the driving mechanism comprises a gear ring (11), a motor (12) and a gear (13), the mounting frame (3) is rotatably connected to the gland (9) through a collar (10) at the end part, the motor (12) is fixedly connected to the top of the gland (9), the gear (13) is mounted on an output shaft of the motor (12), the gear ring (11) is fixedly sleeved on the collar (10), and the gear ring (11) is in meshed connection with the gear (13).
  4. 4. The trimming device for manufacturing rubber products according to claim 1, wherein one end of the tool rest (5) close to the mounting frame (3) is fixedly connected with a guide post (7), and the other end of the guide post (7) penetrates through the mounting frame (3).
  5. 5. The trimming device for rubber product manufacturing according to claim 1, further comprising: the thickness detection module (14) is arranged at the side of the trimming knife (6) and is used for monitoring thickness change of the trimming area in real time and generating a thickness mutation coefficient through the control module (16); The current detection module (15) is arranged on the power supply current of the electric push rod (4) and is used for monitoring the working current fluctuation of the electric push rod (4) in real time and generating a current fluctuation coefficient through the control module (16); The generated thickness mutation coefficient and the current fluctuation coefficient are comprehensively analyzed through the control module (16), an evaluation coefficient is generated, the evaluation coefficient is compared with a preset reference threshold value, and the working state of the electric push rod (4) is controlled according to the comparison result.
  6. 6. The trimming device for manufacturing rubber products according to claim 5, wherein the output end and the input end of the thickness detection module (14) and the output end and the input end of the current detection module (15) are respectively electrically connected with the input end and the output end of the control module (16), and the output end of the control module (16) is electrically connected with the input end of the electric push rod (4).
  7. 7. The trimming device for manufacturing rubber products according to claim 5, wherein the control module (16) controls the operating state of the electric push rod (4) according to the comparison result as follows: The thickness detection module (14) collects thickness change of the trimming area, the current detection module (15) collects working current fluctuation of the electric push rod (4), the control module (16) calculates a thickness mutation coefficient, a current fluctuation coefficient and an evaluation coefficient, if the evaluation coefficient is smaller than a first threshold value, the trimming knife is pushed in a high-speed mode, if the evaluation coefficient is larger than or equal to the first threshold value, the trimming knife is slowed down, if the evaluation coefficient is larger than or equal to a second threshold value, the electric push rod is retracted immediately, and the trimming is stopped and then the electric push rod is probed at an extremely low speed again.
  8. 8. The trimming device for manufacturing rubber products according to claim 5, wherein the thickness abrupt change coefficient generation logic is: The actual thickness data of a plurality of sampling moments in a set time period T are obtained through a thickness detection module (14), and the ratio of the standard deviation of the thickness sampling data to the average thickness in the time period is calculated and is used for quantifying the intensity of thickness gradient change.
  9. 9. The trimming device for manufacturing rubber products according to claim 5, wherein the generation logic of the current fluctuation coefficient is: The current detection module (15) is used for acquiring actual working current data of the electric push rod at a plurality of sampling moments in a set time period T, and calculating the ratio of standard deviation to average current of the current sampling data in the time period, wherein the ratio is used for reflecting dynamic abnormal fluctuation of cutting resistance.
  10. 10. The trimming device for manufacturing a rubber product according to claim 5, wherein the evaluation coefficient generation logic is: The control module (16) carries out logarithmic function smoothing treatment on the thickness mutation coefficient and the current fluctuation coefficient respectively, and then carries out weighted fusion calculation by combining the dynamically determined weight coefficient to generate an evaluation coefficient comprehensively representing the mechanical damage risk level in the trimming process.

Description

Trimming device for manufacturing rubber products Technical Field The invention relates to the technical field of trimming treatment of rubber products, in particular to a trimming device for manufacturing rubber products. Background In the rubber ring production process, burrs and redundant parts of the edges of the rubber ring are required to be trimmed. Because the thickness of the junction of the excess portion and the rubber ring is generally greater than the thickness of the edge of the excess portion, thicker hard blocks tend to form there (hard block locations as shown in FIG. 1). Existing trimming devices typically adjust the trimming blade directly into alignment with the rubber ring edge in an attempt to complete the trimming at one time. However, the trimming knife can be directly contacted with the root of the hard block in the mode, and an instantaneous burst of pulling force is generated during trimming, so that the rubber ring is deformed, and meanwhile, the rubber ring and the trimming knife are easily damaged, so that the product quality and the service life of equipment are influenced. Disclosure of Invention Based on the technical problems in the prior art, the invention provides a trimming device for manufacturing rubber products. The invention provides a trimming device for manufacturing rubber products, which comprises a machine case and a mounting frame which is rotated by a driving mechanism, wherein a processing boss is fixedly connected to the inner wall of the bottom of the machine case, the top end of the processing boss is of a convex structure for placing a rubber ring, an electric push rod is fixedly connected to the bottom end of the mounting frame, a knife rest is fixedly connected to an output shaft of the electric push rod, a replaceable trimming knife is arranged on the knife rest, the rubber ring is placed on the convex structure at the top end of the processing boss, the driving mechanism drives the mounting frame to rotate, the electric push rod pushes the knife rest to move so that the trimming knife contacts the edge of the rubber ring, and trimming is realized by the rotation of the mounting frame. Preferably, the machine further comprises a fixing mechanism, wherein the fixing mechanism comprises a hydraulic cylinder fixedly connected to the top end of the machine case, and an output shaft of the hydraulic cylinder extends into the machine case and is fixedly connected with a gland which can be sleeved on the top end of the processing boss; after the rubber ring is placed, the hydraulic cylinder drives the output shaft to extend, and drives the gland to move downwards and cover the top end of the processing boss and compress the rubber ring, so that the rubber ring is prevented from displacing in the trimming process. Preferably, the driving mechanism comprises a gear ring, a motor and a gear, the mounting frame is rotationally connected to the gland through a lantern ring at the end part, the motor is fixedly connected to the top of the gland, the gear is arranged on an output shaft of the motor, the gear ring is fixedly sleeved on the lantern ring, the gear ring is in meshed connection with the gear, the motor is started to drive the gear to rotate, the gear is in meshed transmission with the gear ring, the lantern ring and the mounting frame are driven to rotate around the gland, and therefore the trimming knife at the bottom end of the mounting frame performs circular motion to trim. The electric push rod drives the knife rest to move left and right to adjust the position of the trimming knife, the guide post slides along the through hole in the mounting frame, the guide post plays a role in guiding the movement of the knife rest, and the movement stability of the trimming knife is ensured. The trimming device for manufacturing the rubber product comprises a thickness detection module, a current detection module, a control module and an evaluation coefficient, wherein the thickness detection module is arranged at the side of a trimming cutter and is used for monitoring thickness change of a trimming area in real time and generating a thickness mutation coefficient through the control module, the current detection module is arranged on power supply current of an electric push rod and is used for monitoring working current fluctuation of the electric push rod in real time and generating a current fluctuation coefficient through the control module, the control module is used for comprehensively analyzing the generated thickness mutation coefficient and the current fluctuation coefficient to generate the evaluation coefficient, judging whether trimming speed needs to be adjusted or not, comparing the evaluation coefficient with a preset reference threshold value, and controlling the working state of the electric push rod according to the comparison result. Preferably, the output end and the input end of the thickness detection module, the output end and the input