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CN-122008360-A - Trimming device and method for automobile bumper

CN122008360ACN 122008360 ACN122008360 ACN 122008360ACN-122008360-A

Abstract

The invention discloses an automobile bumper trimming device and method, and belongs to the technical field of bumper production. The device comprises a base, wherein a mounting frame is slidably arranged on one side of the base, a driving mechanism is arranged on one side of the mounting frame, a trimming component is arranged at the output end of the driving mechanism, the trimming component comprises a direction-adjusting motor, a trimming head is fixedly connected to the output end of the direction-adjusting motor, a hot cutting frame is rotatably arranged at one end of the trimming head, and an electric heating wire is fixedly arranged at one end of the inner wall of the hot cutting frame.

Inventors

  • LEI XINCHUN

Assignees

  • 北京北汽模塑科技有限公司

Dates

Publication Date
20260512
Application Date
20260401

Claims (10)

  1. 1. The automobile bumper trimming device is characterized by comprising a base (101), wherein a mounting frame (103) is slidably arranged on one side of the base (101), a driving mechanism (2) is arranged on one side of the mounting frame (103), a trimming component (3) is arranged at the output end of the driving mechanism (2), the trimming component (3) comprises a direction-adjusting motor (301), a trimming head (302) is fixedly connected with the output end of the direction-adjusting motor (301), a hot cutting frame (317) is rotatably arranged at one end of the trimming head (302), an electric heating wire (318) is fixedly arranged at one end of the inner wall of the hot cutting frame (317), a separation sheet (319) is fixedly arranged at the middle part of the inner wall of the hot cutting frame (317), a separation rotating roller (320) is rotatably arranged at the middle part of the separation sheet (319), and a limiting component (4) for limiting a bumper (5) is fixedly arranged at the other side of the base (101).
  2. 2. An automobile bumper trimming device as defined in claim 1, wherein a turnover motor is fixedly installed on one side of the inner wall of the trimming head (302), and an output end of the turnover motor is fixedly connected with one end of the hot-cut frame (317).
  3. 3. The trimming device for the automobile bumper according to claim 1, wherein a heat dissipation groove (309) is formed in one side, close to a hot-cut frame (317), of the bottom of the trimming head (302), a heat dissipation plate (316) is fixedly connected to the top of the inner wall of the heat dissipation groove (309), a heat dissipation cavity (315) is formed above the heat dissipation plate (316), and vent holes (321) are formed in two sides of the heat dissipation cavity (315).
  4. 4. An automobile bumper trimming device as defined in claim 3, wherein an air suction cover (310) is fixedly connected to one side of the top of the trimming head (302), an air suction opening (312) is formed in one side, close to the hot-cut frame (317), of the air suction cover (310), an air suction fan (311) is fixedly mounted in the middle of the inner wall of the air suction cover (310), an air guide block (313) is fixedly mounted at the bottom of the inner wall of the air suction cover (310), an air outlet is formed in the middle of the air guide block (313), a filter screen is connected to the top of the air outlet in a clamping mode, an air outlet pipe (314) is fixedly connected to the bottom of the air outlet, and the bottom of the air outlet pipe (314) is communicated with the top of the heat dissipation cavity (315).
  5. 5. The trimming device for the automobile bumper according to claim 1, wherein a roller groove (304) is formed in one side, far away from the hot-cut frame (317), of the bottom of the trimming head (302), a positioning butt joint assembly is arranged on the inner wall of the roller groove (304), the positioning butt joint assembly comprises a roller frame (305), a contact roller (306) is rotatably mounted on the inner wall of the roller frame (305), a butt joint groove is formed in the middle of the contact roller (306), and an encoder (307) is fixedly mounted on one side of the roller frame (305).
  6. 6. The trimming device for the automobile bumper according to claim 5, wherein a detection groove is formed above the roller groove (304), a pressure sensor (303) is fixedly installed at one end of the inner wall of the detection groove, a pressing plate (308) is fixedly connected to the middle of the detection groove, a return spring is fixedly connected between the pressing plate (308) and the pressure sensor (303), and one side of the pressing plate (308) is fixedly connected with the top of the roller frame (305) through a pressing rod.
  7. 7. The trimming device for the automobile bumper according to claim 5, wherein the limiting assembly (4) comprises a limiting frame (401), one side of the limiting frame (401) is fixedly connected with a guide cover (402), the inner wall of the guide cover (402) is obliquely arranged, a butt joint frame (406) is fixedly installed in the middle of the guide cover (402), a plurality of limiting cushions (403) are fixedly connected to the inner wall edge of the butt joint frame (406), and a plurality of contact sensors (405) are fixedly installed in the middle of the inner wall of the butt joint frame (406).
  8. 8. The trimming device for the automobile bumper is characterized in that a plurality of feeding cylinders (104) are fixedly arranged in the middle of the mounting frame (103), and the output ends of the feeding cylinders (104) are fixedly connected with pushing plates (105).
  9. 9. An automobile bumper trimming device according to claim 1, wherein the driving assembly comprises a transverse moving guide rail (201), a vertical guide rail (202) is slidably mounted on the inner wall of the transverse moving guide rail (201), a mounting rod (203) is fixedly connected to the inner wall of the vertical guide rail (202), and one end of the mounting rod (203) is fixedly connected with the trimming assembly (3).
  10. 10. An automobile bumper trimming method applied to the automobile bumper trimming device of claim 7, characterized by comprising the steps of: Feeding a bumper (5), driving a pushing plate (105) to move through a feeding mechanism, and transversely pushing the bumper (5) to enable the bumper (5) to enter a butt joint frame (406); step two, driving the trimming head (302) to move by a driving component so that a butt joint groove on the contact roller (306) is in butt joint with the edge of the bumper (5), and then driving the hot cutting frame (317) to turn over by a turning motor so that the heating wire (318) is in contact with the flash, and performing hot melt cutting on the flash at the edge of the bumper (5) through the heating work of the heating wire (318); Step three, starting through an air suction fan, and sucking and discharging the smoke generated in the hot melt cutting process; driving the trimming head (302) to move along the edge of the bumper (5) by the driving assembly, and trimming the edge of the bumper (5); And fifthly, detecting the rotation stroke of the contact roller (306) through the encoder (307), judging that trimming is completed when the detection stroke is consistent with the perimeter of the edge of the preset bumper (5), and otherwise, repeating the fourth step.

Description

Trimming device and method for automobile bumper Technical Field The invention relates to the technical field of bumper production, in particular to an automobile bumper trimming device and method. Background In the injection molding process of the automobile bumper, flash trimming is a key process for influencing the surface quality of a product. The traditional trimming technology mostly adopts a mechanical blade cutting or grinding wheel polishing mode, stress concentration is easy to generate at a notch due to rigid contact, mechanical damage such as material microcrack and surface layer stripping is caused, and particularly, the notch flatness of a bumper made of thermoplastic materials such as polypropylene is difficult to guarantee. If cutting by a hot melt cutting technique is considered, although cutting resistance can be reduced by softening the material at a high temperature, mechanical damage to the bumper is reduced. The existing hot cutting device is mostly in the form of blades, the contact area of a sheet-shaped hot knife and a molten material is large when the hot cutting device works, the melt is easy to adhere to the surface of the knife to form an adhesion layer, so that cutting is difficult to continuously perform, meanwhile, the volume of the knife is large, and the hot cutting device is not flexible enough to adjust in the process of cutting a complex profile track of the edge of a bumper, and cannot be used in the technical field of cutting processing of the edge of the bumper. The prior art therefore still uses mechanical cutting means for trimming, and there is a need for improvement in the state of the art. Disclosure of Invention The invention provides an automobile bumper trimming device, which can solve the problem of large mechanical damage to a bumper in the trimming device in the prior art. The utility model provides an automobile bumper deburring device, includes the base, one side of base slides and is provided with the mounting bracket, actuating mechanism is installed to one side of mounting bracket, the deburring subassembly is installed to actuating mechanism's output, the deburring subassembly is including adjusting to the motor, the output fixedly connected with deburring head of motor, the one end rotation of trimming head is installed the hot cutting frame, the inner wall one end fixed mounting of hot cutting frame has the heating wire, the inner wall middle part fixed mounting of hot cutting frame has the separation piece, the middle part rotation of separation piece is installed and is separated the roller, the opposite side fixed mounting of base has the spacing subassembly that is used for carrying out spacing to the bumper. As a further scheme of the invention, a roller groove is formed in one side, far away from the hot cutting frame, of the bottom of the trimming head, a positioning butt joint assembly is arranged on the inner wall of the roller groove and comprises a roller frame, a contact roller is rotatably arranged on the inner wall of the roller frame, a butt joint groove is formed in the middle of the contact roller, and an encoder is fixedly arranged on one side of the roller frame. As a further scheme of the invention, a detection groove is arranged above the roller groove, one end of the inner wall of the detection groove is fixedly provided with a pressure sensor, the middle part of the detection groove is fixedly connected with a pressing plate, a reset spring is fixedly connected between the pressing plate and the pressure sensor, and one side of the pressing plate is fixedly connected with the top of the roller frame through a pressing rod. As a further scheme of the invention, a heat dissipation groove is formed in one side, close to the hot cutting frame, of the bottom of the trimming head, a heat dissipation plate is fixedly connected to the top of the inner wall of the heat dissipation groove, a heat dissipation cavity is formed above the heat dissipation plate, and vent holes are formed in two sides of the heat dissipation cavity. As a further scheme of the invention, one side of the top of the trimming head is fixedly connected with an air suction cover, one side of the air suction cover, which is close to the hot cutting frame, is provided with an air suction port, the middle part of the inner wall of the air suction cover is fixedly provided with an air suction fan, the bottom of the inner wall of the air suction cover is fixedly provided with an air guide block, the middle part of the air guide block is provided with an air outlet, the top of the air outlet is connected with a filter screen in a clamping way, the bottom of the air outlet is fixedly connected with an air outlet pipe, and the bottom of the air outlet pipe is communicated with the top of the heat dissipation cavity. As a further scheme of the invention, a turnover motor is fixedly arranged on one side of the inner wall of the trimming head, and the output end of the turno