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CN-117961534-B - Assembling process of composite pad for self-drilling screw

CN117961534BCN 117961534 BCN117961534 BCN 117961534BCN-117961534-B

Abstract

The invention relates to the technical field of screw assembly, in particular to an assembly process of a composite pad for a self-drilling screw, which comprises the steps of supporting the self-drilling screw, a metal gasket and a rubber gasket through a plurality of layers of composite frames, blocking and stopping the self-drilling screw, the metal gasket and the rubber gasket on a punching section, enabling a pressing cylinder of the punching mechanism to prop against the rubber gasket and contact the metal gasket, enabling the pressing cylinder to pass through a space surrounded by a plurality of pressing plates together, enabling the metal gasket to be extruded and wrapped on the outer side of the rubber gasket to form the composite pad, driving the composite pad to be sleeved outside a top section of the self-drilling screw to complete assembly along with continuous rising of the pressing cylinder, finally driving a shifting block to rotate through delayed starting of a servo motor, driving the self-drilling screw stopped on the punching section to move forwards and slide out of the composite frame to be collected, completing the assembly at one time, and forming a pre-tightening effect, and effectively preventing the rubber gasket from being fractured.

Inventors

  • TIAN YONGJUN
  • CUI FUKE
  • LIU JINWEI

Assignees

  • 广东法思特精密五金有限公司

Dates

Publication Date
20260508
Application Date
20240315

Claims (7)

  1. 1. The assembly process of the composite pad for the self drilling screw is characterized by comprising the following steps of: s1, pouring a plurality of self-drilling screws, metal gaskets and rubber gaskets into different vibrating screens respectively for screening; s2, butting the discharge ends of the vibrating screens by using a composite frame (100), and layering to catch the self-drilling screws, the metal gaskets and the rubber gaskets in the S1; S3, after the front drilling screw at the high position of the composite frame (100) is driven by the rear drilling screw to pass through the blocking proximity switch (130), triggering the driving rod electric cylinder (220) to drive a plurality of blocking rods (210) to be inserted into the punching section of the composite frame (100); at the moment, the metal gasket and the rubber gasket are also driven to the stamping section to be blocked; S4, triggering a punching cylinder (330) to drive a pressing cylinder (331) to rise to contact with the rubber gasket and the metal gasket along with the fact that the uppermost blocking rod (210) in S3 is close to the punching proximity switch (140), and bending the metal gasket to wrap the rubber gasket to form a composite pad through a space surrounded by a plurality of pressing sheets (310) until the composite pad is sleeved outside the top of the self-drilling screw; S5, resetting the driving rod electric cylinder (220) and the punching electric cylinder (330), and delaying a servo motor (150) to drive a shifting block (151) to rotate so as to shift the assembled self-drilling screw to slide out of the discharge end of the composite frame (100); s6, when the self-drilling screw, the metal gasket and the rubber gasket at the high position of the composite frame (100) slide down, the composite pad and the self-drilling screw are assembled continuously according to S3-S5 and slide out of the composite frame (100) to be collected; The assembling process of the composite pad for the self-drilling screw comprises the steps of assembling the composite pad by adopting a composite frame (100) which is vertically distributed in three layers, a blocking mechanism (200) arranged on one side of the middle part of the composite frame (100) and a stamping mechanism (300) arranged in the middle part of the composite frame (100), wherein a stamping section which is horizontal is arranged in the middle part of the composite frame (100), a servo motor (150) is arranged on the outer side wall of the stamping section, the output shaft end of the servo motor (150) penetrates into the upper layer of the composite frame (100) and is sleeved with a shifting block (151), and the shifting block (151) is clamped with a notch on the bottom surface of the stamping section; The blocking mechanism (200) comprises a plurality of blocking rods (210) and a driving rod electric cylinder (220) for driving the blocking rods (210) to translate, a blocking proximity switch (130) is horizontally embedded in the side wall of the high feeding end of the composite frame (100), the blocking proximity switch (130) is electrically connected with the driving rod electric cylinder (220) and the servo motor (150) through wires, a time relay is electrically connected with the wiring end of the servo motor (150), and the time delay duration of the time relay is the total duration of the working and resetting of the driving rod electric cylinder (220); the punching mechanism (300) comprises a plurality of pressing sheets (310) which are arranged right below a punching section and are in a circumferential array, a punching electric cylinder (330) which is arranged below the compound frame (100) and a pressing cylinder (331) which is sleeved with a drilling screw, wherein the pressing cylinder (331) is coaxially connected with the punching electric cylinder (330), a punching proximity switch (140) is vertically arranged on the inner side wall of the punching section, and the punching proximity switch (140) is electrically connected with the punching electric cylinder (330) through a wire.
  2. 2. The assembly process of the composite pad for the self-drilling screw, as set forth in claim 1, wherein the composite frame (100) is composed of a screw bracket (110) and a gasket bracket (120) at an upper and lower interval, the screw bracket (110) is composed of a guide section (111) at the highest position, an inclined section (112) and a punching section positioned at the middle part, wherein the inclined sections (112) are two and positioned at two ends of the punching section, the cross section of the screw bracket (110) is of a U-shaped structure, and the gasket bracket (120) is identical to the screw bracket (110) in structure.
  3. 3. The assembly process of the composite pad for the self-drilling screw according to claim 2, wherein two sides of the top of the pad bracket (120) are provided with pad supporting tables (121) with L-shaped cross sections, the inner width of each pad supporting table (121) is larger than that of each pad bracket (120), a punching hole (122) which is inserted into the pressing cylinder (331) is formed in the center of a punching section in the middle of each pad bracket (120), and a baffle plate (115) is fixedly connected between the top edges of the punching sections in the middle of the screw bracket (110) through bolts.
  4. 4. The assembly process of the composite pad for the self-drilling screw according to claim 3, wherein the side wall of the stamping section is provided with jacks (116) on the screw bracket (110), the gasket bracket (120) and the gasket bracket (121), a plurality of blocking rods (210) are correspondingly inserted into the jacks (116), and an avoidance groove (114) is formed in the longitudinal middle line of the bottom edge of the screw bracket (110).
  5. 5. The assembly process of the composite pad for the self-drilling screw of claim 4, wherein the top outer sides of the plurality of pressing pieces (310) are sleeved with supporting rings (320), the pressing pieces (310) are obliquely arranged, top openings of the plurality of pressing pieces (310) are in a reduced state, C-shaped elastic pieces (340) are bonded on the outer sides of the pressing pieces (310), and the top surfaces of the elastic pieces (340) are bonded with the bottom surfaces of the supporting rings (320).
  6. 6. The assembly process of the composite pad for the self-drilling screw, as set forth in claim 5, wherein a collar (311) is arranged on the outer side of the top section of the pressing piece (310), a central shaft of the collar (311) is transversely arranged, and a supporting shaft (321) sleeved with the collar (311) is suspended on the inner side of the supporting ring (320).
  7. 7. The assembly process of the composite pad for the self-drilling screw of claim 6, wherein the outward ends of the plurality of blocking rods (210) are welded with push rods (211), the outer ends of the push rods (211) are coaxially connected with a piston rod of a driving rod electric cylinder (220), and an electric cylinder frame (230) is sleeved on the outer side of the driving rod electric cylinder (220).

Description

Assembling process of composite pad for self-drilling screw Technical Field The invention relates to the technical field of screw assembly, in particular to an assembly process of a composite pad for a self-drilling screw. Background The self-tapping screw is provided with the self-tapping drill head at the front end of the screw, and the wafer cover is arranged at the rear end of the screw, so that the contact area is increased, and meanwhile, the rubber pad or the silica gel pad is sleeved outside the screw rod, so that the wafer cover is pressed to form a pretightening force, and the easy loosening of the self-tapping screw is effectively prevented. However, the rubber gasket or the silica gel gasket is exposed outside and is easy to harden quickly due to the fact that the heating and the rain are carried out, the screw-in propulsive force is not well controlled, and the rubber gasket or the silica gel gasket is broken when the screw-in propulsive force is too large, so that the pre-tightening effect is lost, the hardening condition is faster, and in a word, the screw-in screw is not beneficial to realizing the fastening function. Disclosure of Invention In order to overcome the defects in the prior art, the invention aims to provide an assembly process of a composite pad for a self-drilling screw, so as to solve the problems in the prior art. In order to achieve the above object, the present invention provides an assembling process of a composite pad for a self drilling screw, comprising the following steps: s1, pouring a plurality of self-drilling screws, metal gaskets and rubber gaskets into different vibrating screens respectively for screening; s2, butting discharge ends of the vibrating screens by using a composite frame, and layering to catch the self-drilling screws, the metal gaskets and the rubber gaskets in the S1; s3, after the front self-drilling screw at the elevated position of the composite frame is driven by the rear self-drilling screw to pass through the blocking proximity switch, triggering the driving rod electric cylinder to drive a plurality of blocking rods to be inserted into the punching section of the composite frame; at the moment, the metal gasket and the rubber gasket are also driven to the stamping section to be blocked; S4, triggering the stamping cylinder to drive the pressing cylinder to rise to contact with the rubber gasket and the metal gasket along with the fact that the uppermost blocking rod in S3 is close to the stamping proximity switch, and bending the metal gasket to wrap the rubber gasket through a space surrounded by a plurality of pressing sheets so as to form a composite pad until the composite pad is sleeved outside the top of the self-drilling screw; s5, resetting the driving rod electric cylinder and the punching electric cylinder, and delaying to start the servo motor to drive the shifting block to rotate so as to shift the assembled self-drilling screw to slide out of the discharge end of the composite frame; s6, when the self-drilling screw, the metal gasket and the rubber gasket slide down along with the high part of the composite frame, the composite pad and the self-drilling screw are assembled continuously according to S3-S5 and slide out of the composite frame to be collected. As a further improvement of the technical scheme, the multifunctional combined frame further comprises a combined frame, a blocking mechanism and a punching mechanism, wherein the combined frame is distributed in the upper layer and the lower layer, the blocking mechanism is arranged on one side of the middle of the combined frame, the punching mechanism is arranged in the middle of the combined frame, a punching section which is horizontal is arranged in the middle of the combined frame, a servo motor is arranged on the outer side wall of the punching section, the output shaft end of the servo motor penetrates into the upper layer of the combined frame and is sleeved with a shifting block, and the shifting block is connected with a notch on the bottom surface of the punching section in a clamping mode. As a further improvement of the technical scheme, the blocking mechanism comprises a plurality of blocking rods and a driving rod electric cylinder for driving the blocking rods to translate, a blocking proximity switch is horizontally embedded in the side wall of the high feeding end of the composite frame, the blocking proximity switch is electrically connected with the driving rod electric cylinder and a servo motor through wires, wherein a time relay is electrically connected with a servo motor terminal, and the time delay time is the total time of working and resetting of the driving rod electric cylinder. As a further improvement of the technical scheme, the stamping mechanism comprises a plurality of pressing sheets which are arranged right below the stamping section and are in a circumferential array, a stamping electric cylinder arranged below the composite frame an