CN112519098A - Special-shaped blind hole nut automatic implantation in-mold injection molding production line and implementation method thereof - Google Patents

Abstract

The invention discloses an injection molding production line for automatically implanting a special-shaped blind hole nut into a mold and an implementation method thereof, wherein the production line comprises a nut positioning bolt automatic screwing device, a manipulator, a mold and a positioning bolt automatic screwing-out device which are sequentially arranged; the automatic screwing device of nut pilot pin closes the nut and the automatic screwing of pilot pin and constitutes nut pilot pin integrative piece, the manipulator is used for snatching nut pilot pin integrative piece and insert extremely in the mould corresponds the hole site, the automatic device of unscrewing of pilot pin will mould plastics after finishing in the piece the pilot pin autogiration takes out. The invention realizes the full-automatic injection molding production in the implantation mould of the special-shaped blind hole nut, reduces the labor amount and meets the mass production requirement of enterprises.

Description

Special-shaped blind hole nut automatic implantation in-mold injection molding production line and implementation method thereof

Technical Field

The invention relates to the technical field of nut in-mold injection molding, in particular to an automatic implantation in-mold injection molding production line of a special-shaped blind nut and an implementation method thereof.

Background

In injection moulding production, it is sometimes necessary to implant a nut in the plastic part. To the columniform standard component nut of opening, can place the nut on fixed platform's reference column earlier, then the sleeve on the manipulator moves down the cover and gets the nut to block the nut with the metal ball of sleeve side opening part, because the elasticity rubber ring is wrapped up in the metal ball outside, so the nut can be fixed at the inside assigned position of sleeve, the manipulator is automatic to shift to the inside assigned position of mould, thimble in the sleeve is ejecting to the fixed post of mould with the nut, the mould closing is accomplished the automatic mould injection of implanting of nut in the mould.

However, for a special-shaped blind nut, such as a T-shaped blind nut (as shown in fig. 1) with one end sealed, the nut cannot be automatically implanted into the mold for injection molding according to the above method, because the blind nut cannot be placed on the positioning column of the fixed platform on one hand, and on the other hand, the special-shaped nut is difficult to be accurately positioned inside the sleeve.

The existing realization method comprises the steps that firstly, a special-shaped blind hole nut and a positioning bolt are manually screwed together to form a nut positioning bolt integrated piece, a manipulator automatically grabs the nut positioning bolt integrated piece and inserts the nut positioning bolt integrated piece into a hole position corresponding to a mold, the mold closing is completed, the in-mold injection molding is completed, and after the mold opening is carried out and the injection molding piece is taken out, the positioning bolt is manually and rotationally taken out. The manual screwing and rotating positioning bolt taking-out operation has low automation degree, increases the labor amount and increases the labor intensity of operators. For mass production in factories, it is urgently needed to develop an automatic injection molding production line for implanting special-shaped blind nuts into molds and a realization method thereof.

Disclosure of Invention

The invention aims to design an automatic implantation in-mold injection molding production line of a special-shaped blind hole nut and an implementation method thereof, so as to realize full-automatic implantation in-mold injection molding production of the special-shaped blind hole nut, reduce labor amount and meet the requirement of mass production of enterprises.

In order to achieve the purpose, the invention claims an automatic implantation in-mold injection molding production line of a special-shaped blind hole nut, which comprises a nut positioning bolt automatic screwing device, a manipulator, a mold and a positioning bolt automatic screwing-out device which are sequentially arranged; the automatic screwing device of nut pilot pin closes the nut and the automatic screwing of pilot pin and constitutes nut pilot pin integrative piece, the manipulator is used for snatching nut pilot pin integrative piece and insert to the mould correspond the hole site in, the automatic device of unscrewing of pilot pin will mould plastics after finishing in the piece the pilot pin autogiration takes out.

The automatic nut positioning bolt screwing device comprises a first base, wherein a nut feeding mechanism, a positioning bolt feeding mechanism, a rotary screwing mechanism, a fixed conveying mechanism and an assembling platform are arranged on the first base; the assembling platform is provided with a nut limiting groove and a positioning bolt limiting groove which are used for limiting the nut and the positioning bolt respectively, one side of the assembling platform is in driving connection with a first driving device, and under the driving action of the first driving device, the assembling platform slides between a first position and a second position of the first base; when the assembling platform is located at the first position, the discharge holes of the nut feeding mechanism and the positioning bolt feeding mechanism are respectively aligned with the nut limiting groove and the positioning bolt limiting groove; when assembly platform is located when the second position, rotatory twist close mechanism with the nut spacing groove with the pilot pin spacing groove is located same straight line, and fixed transport mechanism is located the nut spacing groove with the top of pilot pin spacing groove, so that rotatory twist close mechanism right the pilot pin with the nut carries out the twist and fit in-process and is right the nut carries out spacing fixed, and will twist and fit the nut pilot pin that finishes to transport to first collection box.

Further, nut feed mechanism is first automatic feeding vibration dish, gim peg feed mechanism is second automatic feeding vibration dish. So set up, utilize first automatic feeding vibration dish and second automatic feeding vibration dish to nut and pilot pin according to predetermined putting transport to nut spacing groove and pilot pin spacing groove in, specifically be the screw thread end of nut and the screw thread cooperation end cooperation alignment of pilot pin, ensure going on smoothly of follow-up assembly work.

Further, rotatory screwing mechanism includes first rotating electrical machines and first screwdriver, first rotating electrical machines fixed connection is on first fly leaf, first fly leaf pass through second drive arrangement with first base side to side sliding connection, the drive end of first rotating electrical machines is connected first screwdriver, the last confession that is equipped with of mounting platform the first through-hole of first screwdriver business turn over. So set up, make first screwdriver be close to the pilot pin, utilize first screwdriver to twist reverse the pilot pin, make pilot pin and nut screw-thread fit, simple structure practicality is strong.

Furthermore, the fixed transportation mechanism comprises a second movable plate, a third driving device, a first clamping block and a second clamping block, the third driving device is fixedly connected to the second movable plate, the driving end of the third driving device is connected with the first clamping block and/or the second clamping block, a sliding groove for the first clamping block and the second clamping block to slide is formed in the surface of the assembling platform, and the sliding groove is located on the left side and the right side of the positioning bolt limiting groove and/or the nut limiting groove; the first clamping block and the second clamping block clamp the nut positioning bolt integrated piece through the third driving device; the second movable plate is transported along the rail to above the first collecting box by a fourth driving device. So set up, utilize the third drive arrangement earlier to make first clamp splice and second clamp splice cooperate and get nut positioning bolt an organic whole piece and press from both sides, rethread fourth drive arrangement makes the second fly leaf remove to the top of first collection box, and rethread third drive arrangement removes the effect of getting of first clamp splice and second clamp splice to nut positioning bolt an organic whole piece, makes the nut positioning bolt drop to first collection box in, simple structure practicality is strong. In addition, the first clamping block and the second clamping block can clamp the left side and the right side of the nut positioning bolt integrated piece through the sliding grooves, and the nut positioning bolt integrated piece can be effectively clamped and carried.

Furthermore, a first limiting mechanism, a second limiting mechanism and a third limiting mechanism are also arranged;

the first limiting mechanism and the second limiting mechanism are fixedly connected with the first base, and the first limiting mechanism and the second limiting mechanism are respectively positioned at the left side and the right side of the assembly platform when the assembly platform is at the second position;

the first limiting mechanism comprises a fifth driving device and an ejector rod, the driving end of the fifth driving device is connected with the ejector rod, the ejector rod moves away from or close to one end of the nut, which is far away from the positioning bolt, through the fifth driving device, and a second through hole for the ejector rod to pass in and out is formed in the assembling platform; the non-threaded end of the nut is abutted by the ejector rod of the first limiting mechanism, and when the first screwdriver slides leftwards to extrude the positioning bolt, the nut is prevented from moving in the opposite direction of the first screwdriver.

The second limiting mechanism comprises a pressing plate and a pressing plate seat, the pressing plate and the pressing plate seat are fixedly connected in an L shape, the pressing plate is positioned above the positioning bolt limiting groove, and a third through hole for the first screwdriver to pass in and out is formed in the pressing plate seat; utilize the clamp plate of second stop gear to carry on spacingly to the top of pilot pin, avoid the pilot pin upwards perk at swivelling joint's in-process.

The third limiting mechanism comprises a limiting plate, the limiting plate is fixedly connected with the second movable plate, the second movable plate moves up and down along the track through the fourth driving device, and the limiting plate is located right above the nut limiting groove. The nut is compressed and fixed from the upper side by using the limiting block of the third limiting mechanism, so that the nut cannot rotate along with the rotation in the process of rotating and matching the positioning bolt, and the effective threaded connection between the positioning bolt and the nut is ensured.

The effective thread fit of the positioning bolt and the nut is ensured through the first limiting mechanism, the second limiting mechanism and the third limiting mechanism.

Furthermore, a contact sensor is arranged at an end position of a sliding motion path of the assembling platform and electrically connected with the first driving device. So set up, detect assembly platform's the position of sliding and in time control first drive arrangement through contact sensor, ensure that assembly platform can accurately slide to first position and second position on.

The automatic positioning bolt screwing-out device comprises a second base, and a pressing mechanism and a plastic part placing table are arranged above the second base; a fixed support, a lifting seat, a rotary taking-out mechanism and a positioning bolt collecting mechanism are arranged below the second base; the pressing mechanism comprises a rotary pressing cylinder and a pressing rod, and the output end of the rotary pressing cylinder is connected with the pressing rod; the plastic part placing table is positioned on one side of the pressing mechanism and embedded on the second base, the upper surface of the plastic part placing table is matched with the plastic part, and a fourth through hole for the positioning bolt to pass through is formed in the plastic part placing table; the fixed support is fixedly connected with a lifting cylinder through a fixed plate, the output end of the lifting cylinder is connected with a lifting plate, the lifting plate is fixedly connected with the lifting seat through a lifting rod, the rotary taking-out mechanism is fixedly connected with the lifting seat, and the rotary taking-out mechanism is driven by the lifting cylinder to move up and down; the rotary taking-out mechanism comprises a second rotary motor and a second screwdriver, and the driving end of the second rotary motor is connected with the second screwdriver; the positioning bolt collecting mechanism is fixedly connected with the second base and comprises a first collecting plate and a second collecting box, the first collecting plate is obliquely arranged, a fifth through hole is formed in the first collecting plate, the second screwdriver, the fifth through hole and the fourth through hole are sequentially aligned, and the diameter of the fifth through hole is larger than that of the second screwdriver and smaller than that of the positioning bolt; the second collecting box is located at an inclined lower end of the first collecting plate.

Furthermore, a guide seat is fixedly arranged on the fixed support and is positioned between the lifting plate and the second base; the guide seat comprises a guide block and a guide plate, a guide sliding rail matched with the guide block is arranged on the lifting seat, the guide sliding rail is vertically arranged, and the guide sliding rail is connected with the guide block in a vertical sliding manner; the guide plate is provided with a sixth through hole for the lifting rod to pass through, the outer side of the lifting rod is sleeved with a spring, and the spring is positioned between the lifting seat and the guide plate. So set up, through the direction slide rail of perpendicular setting, ensure that the seat oscilaltion in-process keeps the straightness that hangs down. Meanwhile, a spring is additionally arranged between the lifting seat and the guide plate, and the elastic force of the spring is utilized to ensure that the lifting seat is reset quickly.

Furthermore, the pressing mechanism, the plastic part placing table, the rotary taking-out mechanism, the lifting seat, the guide seat and the positioning bolt collecting mechanism are correspondingly provided with a plurality of pressing mechanisms which are arranged in a bilateral symmetry mode. So set up, through setting up a plurality of correspondingly, can once only accomplish the automatic back-out operation of the gim peg of a plurality of moulds, improve work efficiency.

Furthermore, the positioning bolt collecting mechanism is also provided with a second collecting plate, and the second collecting plate is positioned between the first collecting plate and the second collecting box; the second collecting plates are obliquely arranged, the oblique upper ends of the second collecting plates are aligned with the oblique lower ends of the first collecting plates, and the oblique lower ends of the second collecting plates are aligned with the second collecting boxes; and a seventh through hole for the second rotating motor to pass through is formed in the second collecting plate. So set up, once only collect a plurality of locating pin that falls from first collecting plate through the second collecting plate, once only guide landing to the second again collects the box, the recovery of locating pin of being convenient for. Meanwhile, a seventh through hole is formed for the second rotating motor to pass through when the second rotating motor ascends and descends, so that the second screwdriver can conveniently rotate the positioning bolt to take out the positioning bolt.

Furthermore, a guide post vertically arranged is arranged between the fixed plate and the second base, and the lifting plate penetrates through the guide post and is connected with the guide post in a vertically sliding mode. So set up, through the guide post that sets up perpendicularly, ensure that the seat oscilaltion in-process keeps the straightness that hangs down.

The invention also claims an implementation method of the automatic injection molding production line for implanting the special-shaped blind hole nut into the mold, which comprises the following steps:

step 1: the nut and the positioning bolt are automatically screwed by utilizing the nut positioning bolt automatic screwing device to form a nut positioning bolt integrated piece;

step 2: grabbing the nut positioning bolt integrated piece in the step 1 through the manipulator and inserting the nut positioning bolt integrated piece into a corresponding hole of a mold;

and step 3: performing injection molding operation on the mold into which the nut positioning bolt integrated piece is inserted in the step 2, and opening the mold to obtain a plastic piece;

and 4, step 4: and (3) placing the plastic part in the step (3) in an automatic positioning bolt screwing-out device, and automatically rotating and taking out the positioning bolt in the plastic part by utilizing the automatic positioning bolt screwing-out device to obtain the plastic part implanted with the special-shaped nut.

Compared with the prior art, the invention has the beneficial effects that:

the automatic screwing device of the nut positioning bolt and the automatic screwing device of the positioning bolt are additionally arranged in the existing injection molding process of the special-shaped blind hole nut in the injection mold, the nut positioning bolt integrated piece is formed by automatically screwing the nut and the positioning bolt by utilizing the automatic screwing device of the nut positioning bolt, and the positioning bolt in the plastic piece after the injection molding is finished is automatically rotated and taken out by utilizing the automatic screwing device of the positioning bolt. Realize the full-automatic production of moulding plastics in implanting the mould of dysmorphism blind hole nut, reduce the recruitment volume of labour, satisfy enterprise mass production demand.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of the operation of the profile nut implant molding of the present invention;

FIG. 2 is an overall perspective view of the automatic nut positioning bolt screwing device of the present invention;

FIG. 3 is a partial perspective view of one of the nut positioning bolt automatic screwing devices of the present invention (with the fixed transport mechanism hidden);

FIG. 4 is an enlarged fragmentary view at Z of FIG. 3 of the present invention;

FIG. 5 is a top view of the automatic nut positioning bolt tightening mechanism of the present invention;

FIG. 6 is an enlarged fragmentary view at Y of FIG. 5 of the present invention;

FIG. 7 is a partial perspective view of the second embodiment of the automatic nut positioning bolt screwing device of the present invention (with the nut feeding mechanism and the positioning bolt feeding mechanism hidden);

FIG. 8 is an enlarged fragmentary view at X of FIG. 7 of the present invention;

FIG. 9 is a schematic structural view of the mounting platform of the automatic nut positioning bolt screwing device of the present invention in a second position;

FIG. 10 is an overall perspective view of the automatic positioning bolt unscrewing device of the present invention;

FIG. 11 is an enlarged view of a portion of FIG. 10 taken at W in accordance with the present invention;

FIG. 12 is a front view of the automatic positioning bolt unscrewing device of the present invention;

FIG. 13 is a schematic view of the automatic positioning pin removal apparatus of the present invention;

the names of the components identified in the figures are as follows:

a1, a nut; a2, a positioning bolt; a3, molding; a4, a nut positioning bolt integrated piece;

b1, a first base; b2, a nut feeding mechanism; b3, a positioning bolt feeding mechanism; b4, rotating the screwing mechanism; b401, a first rotating electric machine; b402, a first screwdriver; b403, a first movable plate; b404, a second driving device; b5, fixing a conveying mechanism; b501, a second movable plate; b502, a third driving device; b503, a first clamping block; b504, a second clamping block; b505, a fourth driving device; b506, a track; b6, assembling a platform; b601, a nut limiting groove; b602, a positioning bolt limiting groove; b603, a first through hole; b604, a second through hole; b605, a sliding groove; b7, a first driving device; b701, a contact sensor; b8, a first collecting box; b9, a first limiting mechanism; b901, a fifth driving device; b902, a mandril; b10, a second limiting mechanism; b1001, a pressure plate; b1002, a pressing plate seat; b1003, a third through hole; b11, a third limiting mechanism; b1101, a limiting plate;

c1, a second base; c2, a pressing mechanism; c201, rotating a compaction cylinder; c202, a compression rod; c3, placing a plastic part; c301, a fourth through hole; c4, fixing a bracket; c401, fixing plates; c5, a lifting cylinder; c501, a lifting plate; c6, a lifting seat; c601, a lifting rod; c602, guiding a sliding rail; c603, a spring; c7, rotating the taking-out mechanism; c701, a second rotating electrical machine; c702, a second screwdriver; c8, a positioning bolt collecting mechanism; c801, a first collecting plate; c8011, fifth via; c802, a second collection box; c803, a second collection plate; c8031, a seventh via; c9, a guide seat; c901, a guide block; c902, a guide plate; c9021 and a sixth through hole; c10, guide column

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the description is only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Example (b):

an automatic injection molding production line for implanting a special-shaped blind hole nut into a mold comprises a nut positioning bolt automatic screwing device, a manipulator, a mold and a positioning bolt automatic screwing-out device which are sequentially arranged; the nut positioning bolt automatic screwing device automatically screws a nut A1 and a positioning bolt A2 to form a nut positioning bolt integrated piece A4, the manipulator is used for grabbing the nut positioning bolt integrated piece A4 and inserting the nut positioning bolt integrated piece A4 into a corresponding hole position of a mold, and the positioning bolt automatic screwing-out device automatically rotates and takes out the positioning bolt A2 in the plastic piece A3 after injection molding. The manipulator and the mold are of the existing design, so the structural shape of the manipulator and the mold is not described in detail in the application.

The automatic nut positioning bolt screwing device comprises a first base B1, wherein a nut feeding mechanism B2, a positioning bolt feeding mechanism B3, a rotary screwing mechanism B4, a fixed transportation mechanism B5 and an assembly platform B6 are arranged on the first base B1; the assembling platform B6 is provided with a nut limiting groove B601 and a positioning bolt limiting groove B602 which are used for respectively limiting the nut A1 and the positioning bolt A2, one side of the assembling platform B6 is in driving connection with a first driving device B7, and under the driving action of a first driving device B7, the assembling platform B6 slides between a first position and a second position of a first base B1; when the assembly platform B6 is located at the first position, the discharge ports of the nut feeding mechanism B2 and the positioning bolt feeding mechanism B3 are respectively aligned with the nut limiting groove B601 and the positioning bolt limiting groove B602; when the assembly platform B6 is located at the second position, the rotary screwing mechanism B4 is located on the same straight line with the nut limiting groove B601 and the locating bolt limiting groove B602, and the fixed transportation mechanism B5 is located above the nut limiting groove B601 and the locating bolt limiting groove B602, so that the rotary screwing mechanism B4 carries out limiting and fixing on the nut A1 in the screwing and assembling process of the locating bolt A2 and the nut A1, and transports the nut locating bolt integrated piece A4 which is screwed and assembled to the first collection box B8.

Nut feed mechanism B2 is first automatic feeding vibration dish, and pilot pin feed mechanism B3 is second automatic feeding vibration dish. So set up, utilize first automatic feeding vibration dish and second automatic feeding vibration dish to nut and pilot pin according to predetermined putting transport to nut spacing groove B601 and pilot pin spacing groove B602 in, specifically be the screw thread end of nut and the screw thread cooperation end cooperation alignment of pilot pin, ensure going on smoothly of follow-up assembly work.

The rotary screwing mechanism B4 includes a first rotary electric machine B401 and a first screwdriver B402, the first rotary electric machine B401 is fixedly connected to the first movable plate B403, the first movable plate B403 is connected to the first base B1 through a second driving device B404 in a left-right sliding manner, a driving end of the first rotary electric machine B401 is connected to the first screwdriver B402, and a first through hole B603 for the first screwdriver B402 to enter and exit is formed in the assembling platform B6. By the arrangement, the first screwdriver B402 is close to the positioning bolt A2, the positioning bolt A2 is twisted by the first screwdriver B402, the positioning bolt A2 is in threaded fit with the nut A1, and the structure is simple and the practicability is high.

The fixed transportation mechanism B5 comprises a second movable plate B501, a third driving device B502, a first clamping block B503 and a second clamping block B504, the third driving device B502 is fixedly connected to the second movable plate B501, the driving end of the third driving device B502 is connected with the first clamping block B503 and/or the second clamping block B504, the surface of the assembly platform B6 is provided with a sliding groove B605 for the first clamping block B503 and the second clamping block B504 to slide, and the sliding groove B605 is positioned at the left side and the right side of the positioning bolt limiting groove B602 and/or the nut limiting groove B601; the first clamping block B503 and the second clamping block B504 clamp the nut positioning bolt integrated piece A4 through a third driving device B502; the second flap B501 is transported along the rail B506 by the fourth driving means B505 to above the first collecting box B8. So set up, utilize third drive arrangement B502 to make first clamp splice B503 and second clamp splice B504 cooperate and press from both sides nut positioning bolt integrative piece A4, rethread fourth drive arrangement B505 makes second fly leaf B501 move to the top of first collection box B8, rethread third drive arrangement B502 removes the effect of pressing from both sides of first clamp splice B503 and second clamp splice B504 to nut positioning bolt integrative piece A4, make nut positioning bolt integrative piece A4 drop to first collection box B8 in, simple structure practicality is strong. In addition, the first clamping block B503 and the second clamping block B504 can clamp the left side and the right side of the nut positioning bolt integrated piece A4 through the sliding grooves B605, and the nut positioning bolt integrated piece A4 can be effectively clamped and conveyed.

The device is also provided with a first limiting mechanism B9, a second limiting mechanism B10 and a third limiting mechanism B11;

the first limiting mechanism B9 and the second limiting mechanism B10 are fixedly connected with the first base B1, and the first limiting mechanism B9 and the second limiting mechanism B10 are respectively positioned at the left side and the right side of the assembly platform B6 at the second position;

the first limiting mechanism B9 comprises a fifth driving device B901 and a mandril B902, the driving end of the fifth driving device B901 is connected with the mandril B902, the mandril B902 moves away from or close to one end of the nut A1 far away from the positioning bolt A2 through the fifth driving device B901, and the assembly platform B6 is provided with a second through hole B604 for the mandril B902 to go in and out; the non-threaded end of the nut A1 is abutted by the ejector rod B902 of the first limiting mechanism B9, and when the first screwdriver B402 slides leftwards to squeeze the positioning bolt A2, the nut A1 is prevented from moving in the opposite direction of the first screwdriver B402.

The second limiting mechanism B10 comprises a pressure plate B1001 and a pressure plate seat B1002, the pressure plate B1001 and the pressure plate seat B1002 are fixedly connected in an L shape, the pressure plate B1001 is positioned above the positioning bolt limiting groove B602, and the pressure plate seat B1002 is provided with a third through hole B1003 for the first screwdriver B402 to go in and out; the pressure plate B1001 of the second limiting mechanism B10 is used for limiting the position above the positioning bolt, so that the positioning bolt is prevented from tilting upwards in the rotating connection process.

The third limiting mechanism B11 includes a limiting plate B1101, the limiting plate B1101 is fixedly connected to the second movable plate B501, the second movable plate B501 moves up and down along the track B506 by a fourth driving device B505, and the limiting plate B1101 is located right above the nut limiting groove B601. The nut A1 is pressed and fixed from the upper side by using a limiting block of the third limiting mechanism B11, the nut A1 cannot rotate along with the rotation of the positioning bolt A2 in the process of rotating and matching, and effective threaded connection between the positioning bolt A2 and the nut A1 is ensured.

Effective threaded engagement of the locating peg a2 with the nut a1 is ensured by the first stop mechanism B9, the second stop mechanism B10, and the third stop mechanism B11.

A contact sensor B701 is arranged at the end position of the sliding motion path of the assembling platform B6, and the contact sensor B701 is electrically connected with the first driving device B7. With the arrangement, the sliding position of the assembly platform B6 is detected through the contact sensor B701, and the first driving device B7 is controlled in time, so that the assembly platform B6 can slide to the first position and the second position accurately.

The automatic positioning bolt screwing-out device comprises a second base C1, and a pressing mechanism C2 and a plastic piece placing table C3 are arranged above the second base C1; a fixed bracket C4, a lifting seat C6, a rotary taking-out mechanism C7 and a positioning bolt collecting mechanism C8 are arranged below the second base C1; the pressing mechanism C2 comprises a rotary pressing cylinder C201 and a pressing rod C202, and the output end of the rotary pressing cylinder C201 is connected with the pressing rod C202; the plastic part placing table C3 is positioned on one side of the pressing mechanism C2, the plastic part placing table C3 is embedded on the second base C1, the upper surface of the plastic part placing table C3 is matched with a plastic part A3, and a fourth through hole C301 for a positioning bolt A2 to pass through is formed in the plastic part placing table C3; a lifting cylinder C5 is fixedly connected to the fixed support C4 through a fixed plate C401, the output end of a lifting cylinder C5 is connected with a lifting plate C501, the lifting plate C501 is fixedly connected with a lifting seat C6 through a lifting rod C601, a rotary taking-out mechanism C7 is fixedly connected with a lifting seat C6, and the rotary taking-out mechanism C7 is driven by a lifting cylinder C5 to move up and down; the rotary taking-out mechanism C7 includes a second rotary electric machine C701 and a second screw driver C702, and the driving end of the second rotary electric machine C701 is connected to the second screw driver C702; the positioning bolt collecting mechanism C8 is fixedly connected with the second base C1, the positioning bolt collecting mechanism C8 comprises a first collecting plate C801 and a second collecting box C802, the first collecting plate C801 is obliquely arranged, a fifth through hole C8011 is formed in the first collecting plate C801, the second screwdriver C702, the fifth through hole C8011 and the fourth through hole C301 are sequentially aligned, and the hole diameter of the fifth through hole C8011 is larger than the diameter of the second screwdriver C702 and smaller than the diameter of the positioning bolt; the second collecting box C802 is located at the inclined lower end of the first collecting plate C801.

The fixed support C4 is also fixedly provided with a guide seat C9, and the guide seat C9 is positioned between the lifting plate C501 and the second base C1; the guide seat C9 comprises a guide block C901 and a guide plate C902, a guide slide rail C602 matched with the guide block C901 is arranged on the lifting seat C6, the guide slide rail C602 is vertically arranged, and the guide slide rail C602 is connected with the guide block C901 in a vertical sliding manner; the guide plate C902 is provided with a sixth through hole C9021 for the lifting rod C601 to pass through, the outer side of the lifting rod C601 is sleeved with a spring C603, and the spring C603 is located between the lifting seat C6 and the guide plate C902. So set up, through the direction slide rail C602 of perpendicular setting, guarantee that lift seat C6 oscilaltion in-process keeps the straightness that hangs down. Meanwhile, a spring C603 is additionally arranged between the lifting seat C6 and the guide plate C902, and the elastic force of the spring C603 is utilized to ensure that the lifting seat C6 is quickly reset.

The pressing mechanism C2, the plastic part placing table C3, the rotary taking-out mechanism C7, the lifting seat C6, the guide seat C9 and the positioning bolt collecting mechanism C8 are correspondingly provided with a plurality of pressing mechanisms which are arranged in a bilateral symmetry mode. So set up, through setting up a plurality of correspondingly, can once only accomplish the automatic back-out operation of the gim peg of a plurality of moulds, improve work efficiency.

The positioning pin collecting mechanism C8 is further provided with a second collecting plate C803, and the second collecting plate C803 is positioned between the first collecting plate C801 and the second collecting box C802; the second collecting plates C803 are obliquely arranged, the oblique upper ends of the second collecting plates C803 are aligned with the oblique lower ends of the first collecting plates C801, and the oblique lower ends of the second collecting plates C803 are aligned with the second collecting boxes C802; the second collecting plate C803 is provided with a seventh through hole C8031 through which the second rotating electric machine C701 passes. With the arrangement, a plurality of positioning bolts falling from the first collecting plate C801 are collected at one time by the second collecting plate C803 and are guided to slide into the second collecting box C802 at one time, so that the positioning bolts A2 can be conveniently recovered. Meanwhile, a seventh through hole C8031 is formed for the second rotating electric machine C701 to pass through when ascending and descending, so that the second screwdriver C702 can conveniently rotate and take out the positioning bolt A2.

A guide post C10 is vertically arranged between the fixed plate C401 and the second base C1, and the lifting plate C501 penetrates through the guide post C10 and is connected with the guide post C10 in a vertical sliding manner. So set up, through the guide post C10 of perpendicular setting, guarantee that lift seat C6 oscilaltion in-process keeps the straightness that hangs down.

The working principle of the embodiment is as follows:

step 1: the nut A1 and the positioning bolt A2 are automatically screwed by the nut positioning bolt automatic screwing device to form a nut positioning bolt integrated piece A4;

step 2: grabbing the nut positioning bolt integrated piece A4 obtained in the step 1 through a manipulator and inserting the nut positioning bolt integrated piece A4 into a corresponding hole of a mold;

and step 3: performing injection molding operation on the mold into which the nut positioning bolt integrated piece A4 is inserted in the step 2, and opening the mold to obtain a plastic piece A3;

and 4, step 4: and (3) placing the plastic part A3 in the step (3) in an automatic positioning bolt unscrewing device in a mechanical or manual mode, and automatically rotating and taking out the positioning bolt A2 in the plastic part A3 by using the automatic positioning bolt unscrewing device to obtain the plastic part implanted with the special-shaped nut.

Wherein, the specific theory of operation that the automatic device that closes of screwing of nut pilot pin is:

first, mounting platform B6 is in a first position. The nuts and the positioning bolts are dropped and placed in the nut holding grooves B601 and the positioning bolt holding grooves B602 of the assembly platform B6 by the nut feeding mechanism B2 and the positioning bolt feeding mechanism B3, and then the assembly platform B6 slides from the first position to the second position by the driving action of the first driving device B7. Under the driving action of the second driving device B404, the first movable plate B403 makes the first screwdriver B402 sequentially pass through the third through hole B1003 of the platen seat B1002 and the first through hole B603 of the assembly platform B6, and approach to the positioning bolt direction, so that the first screwdriver B402 is matched with the positioning bolt a2 and further pushes the positioning bolt a2 to make the positioning bolt a2 contact with the nut a1, and at the same time, the first limiting mechanism B9, the second limiting mechanism B10 and the third limiting mechanism B11 perform position limiting and angle limiting on the nut a1 and the positioning bolt a 2. And then the first rotating motor B401 drives the first screwdriver B402 to rotate, and the positioning bolt A2 and the nut A1 are assembled in a threaded connection mode to form a nut positioning bolt integrated piece A4. After the assembly is completed, the third driving device B502 drives the first clamping block B503 and the second clamping block B504 to clamp the nut positioning bolt integrated piece a4, the second movable plate B501 moves to the upper side of the first collection box B8 along the track B506 under the driving action of the fourth driving device B505, and the third driving device B502 releases the clamping action of the first clamping block B503 and the second clamping block B504 on the nut positioning bolt integrated piece a4, so that the nut positioning bolt integrated piece a4 falls into the first collection box B8. At this point, the automatic threading of nut a1 with locating stud a2 is completed. Finally, the assembling platform B6 slides to the first position again under the driving action of the first driving device B7, and the operation is repeated.

The specific working principle of the automatic screwing-out device of the positioning bolt is as follows:

the plastic A3 is placed on the plastic placement table C3, and the positioning pin a2 passes through the fourth through-hole C301 of the plastic placement table C3. The rotating compaction air cylinder C201 drives the compaction rod C202 to rotate by 90 degrees and descend to compact and fix the plastic part A3 on the plastic part placing table C3. The lift cylinder C5 drives the lift plate C501 upward, which in turn causes the rotary takeout mechanism C7 to move upward. The second screw driver C702 is fitted with the positioning pin a2 through the fifth through hole C8011 of the first collecting plate C801. The second rotating electric machine C701 rotates the second driver C702 to rotate the positioning pin a 2. When the positioning bolt A2 is completely unscrewed and separated from the nut A1, the lifting cylinder C5 is activated again to drive the lifting plate C501 to move downwards, so that the second screwdriver C702 descends below the first collecting plate C801. Since the diameter of the fifth through hole C8011 of the first collecting plate C801 is larger than the diameter of the second driver C702 and smaller than the diameter of the positioning pin a2, the positioning pin a2 cannot pass through the fifth through hole C8011 with the second driver C702, and can only slide down along the inclined first collecting plate C801 into the second collecting box C802. At this point, the automatic unscrewing of the dead bolt a2 is completed.

The beneficial effect of this embodiment does:

the automatic screwing device of the nut positioning bolt and the automatic screwing device of the positioning bolt are additionally arranged in the existing injection molding process of the special-shaped blind hole nut in the injection mold, the nut positioning bolt integrated piece is formed by automatically screwing the nut and the positioning bolt by utilizing the automatic screwing device of the nut positioning bolt, and the positioning bolt in the plastic piece after the injection molding is finished is automatically rotated and taken out by utilizing the automatic screwing device of the positioning bolt. Realize the full-automatic production of moulding plastics in implanting the mould of dysmorphism blind hole nut, reduce the recruitment volume of labour, satisfy enterprise mass production demand.

While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. An automatic injection molding production line for implanting special-shaped blind nuts into a mold is characterized in that; the automatic screwing device comprises a nut positioning bolt automatic screwing device, a manipulator, a mould and a positioning bolt automatic screwing-out device which are arranged in sequence;

the automatic screwing device of nut pilot pin closes the nut and the automatic screwing of pilot pin and constitutes nut pilot pin integrative piece, the manipulator is used for snatching nut pilot pin integrative piece and insert extremely in the mould corresponds the hole site, the automatic device of unscrewing of pilot pin will mould plastics after finishing in the piece the pilot pin autogiration takes out.

2. The automatic implantation in-mold injection molding production line of the special-shaped blind nut according to claim 1, characterized in that: the automatic nut positioning bolt screwing device comprises a first base, wherein a nut feeding mechanism, a positioning bolt feeding mechanism, a rotary screwing mechanism, a fixed conveying mechanism and an assembling platform are arranged on the first base;

the assembling platform is provided with a nut limiting groove and a positioning bolt limiting groove which are used for limiting the nut and the positioning bolt respectively, one side of the assembling platform is in driving connection with a first driving device, and under the driving action of the first driving device, the assembling platform slides between a first position and a second position of the first base; when the assembling platform is located at the first position, the discharge holes of the nut feeding mechanism and the positioning bolt feeding mechanism are respectively aligned with the nut limiting groove and the positioning bolt limiting groove; when assembly platform is located when the second position, rotatory twist close mechanism with the nut spacing groove with the pilot pin spacing groove is located same straight line, and fixed transport mechanism is located the nut spacing groove with the top of pilot pin spacing groove, so that rotatory twist close mechanism right the pilot pin with the nut carries out the twist and fit in-process and is right the nut carries out spacing fixed, and will twist and fit the nut pilot pin that finishes to transport to first collection box.

3. The automatic implantation in-mold injection molding production line of the special-shaped blind nut according to claim 2, characterized in that:

the nut feeding mechanism is a first automatic feeding vibration disc, and the positioning bolt feeding mechanism is a second automatic feeding vibration disc;

the rotary screwing mechanism comprises a first rotary motor and a first screwdriver, the first rotary motor is fixedly connected to a first movable plate, the first movable plate is connected with the first base in a left-right sliding mode through a second driving device, the driving end of the first rotary motor is connected with the first screwdriver, and a first through hole for the first screwdriver to enter and exit is formed in the assembling platform;

the fixed transportation mechanism comprises a second movable plate, a third driving device, a first clamping block and a second clamping block, the third driving device is fixedly connected to the second movable plate, the driving end of the third driving device is connected with the first clamping block and/or the second clamping block, a sliding groove for the first clamping block and the second clamping block to slide is formed in the surface of the assembling platform, and the sliding groove is located on the left side and the right side of the positioning bolt limiting groove and/or the nut limiting groove; the first clamping block and the second clamping block clamp the nut positioning bolt integrated piece through the third driving device; the second movable plate is transported along a rail to above the first collecting box by a fourth driving device.

4. The automatic implantation in-mold injection molding production line of the special-shaped blind nut according to claim 3, characterized in that: the first limiting mechanism, the second limiting mechanism and the third limiting mechanism are also arranged;

the first limiting mechanism and the second limiting mechanism are fixedly connected with the first base, and the first limiting mechanism and the second limiting mechanism are respectively positioned at the left side and the right side of the assembly platform when the assembly platform is at the second position; the first limiting mechanism comprises a fifth driving device and an ejector rod, the driving end of the fifth driving device is connected with the ejector rod, the ejector rod moves away from or close to one end of the nut, which is far away from the positioning bolt, through the fifth driving device, and a second through hole for the ejector rod to pass in and out is formed in the assembling platform; the second limiting mechanism comprises a pressing plate and a pressing plate seat, the pressing plate and the pressing plate seat are fixedly connected in an L shape, the pressing plate is positioned above the positioning bolt limiting groove, and a third through hole for the first screwdriver to pass in and out is formed in the pressing plate seat;

the third limiting mechanism comprises a limiting plate, the limiting plate is fixedly connected with the second movable plate, the second movable plate moves up and down along the track through the fourth driving device, and the limiting plate is located right above the nut limiting groove.

5. The automatic implantation in-mold injection molding production line of the special-shaped blind nut according to claim 1, characterized in that: the automatic positioning bolt screwing-out device comprises a second base, and a pressing mechanism and a plastic part placing table are arranged above the second base; a fixed support, a lifting seat, a rotary taking-out mechanism and a positioning bolt collecting mechanism are arranged below the second base;

the pressing mechanism comprises a rotary pressing cylinder and a pressing rod, and the output end of the rotary pressing cylinder is connected with the pressing rod; the plastic part placing table is positioned on one side of the pressing mechanism and embedded on the second base, the upper surface of the plastic part placing table is matched with the plastic part, and a fourth through hole for the positioning bolt to pass through is formed in the plastic part placing table;

the fixed support is fixedly connected with a lifting cylinder through a fixed plate, the output end of the lifting cylinder is connected with a lifting plate, the lifting plate is fixedly connected with the lifting seat through a lifting rod, the rotary taking-out mechanism is fixedly connected with the lifting seat, and the rotary taking-out mechanism is driven by the lifting cylinder to move up and down; the rotary taking-out mechanism comprises a second rotary motor and a second screwdriver, and the driving end of the second rotary motor is connected with the second screwdriver;

the positioning bolt collecting mechanism is fixedly connected with the second base and comprises a first collecting plate and a second collecting box, the first collecting plate is obliquely arranged, a fifth through hole is formed in the first collecting plate, the second screwdriver, the fifth through hole and the fourth through hole are sequentially aligned, and the diameter of the fifth through hole is larger than that of the second screwdriver and smaller than that of the positioning bolt; the second collecting box is located at an inclined lower end of the first collecting plate.

6. The automatic implantation in-mold injection molding production line of the special-shaped blind nut according to claim 5, characterized in that: the fixed support is also fixedly provided with a guide seat, and the guide seat is positioned between the lifting plate and the second base; the guide seat comprises a guide block and a guide plate, a guide sliding rail matched with the guide block is arranged on the lifting seat, and the guide sliding rail is vertically arranged; the guide plate is provided with a sixth through hole for the lifting rod to pass through, the outer side of the lifting rod is sleeved with a spring, and the spring is positioned between the lifting seat and the guide plate.

7. The automatic implantation in-mold injection molding production line of the special-shaped blind nut according to claim 6, characterized in that: the pressing mechanism, the plastic part placing table, the rotary taking-out mechanism, the lifting seat, the guide seat and the positioning bolt collecting mechanism are correspondingly provided with a plurality of positioning bolt collecting mechanisms which are arranged in a bilateral symmetry mode.

8. The automatic implantation in-mold injection molding production line of the special-shaped blind nut according to claim 7, characterized in that: the positioning bolt collecting mechanism is also provided with a second collecting plate, and the second collecting plate is positioned between the first collecting plate and the second collecting box; the second collecting plates are obliquely arranged, the oblique upper ends of the second collecting plates are aligned with the oblique lower ends of the first collecting plates, and the oblique lower ends of the second collecting plates are aligned with the second collecting boxes; and a seventh through hole for the second rotating motor to pass through is formed in the second collecting plate.

9. The automatic implantation in-mold injection molding production line of the special-shaped blind nut according to claim 5, characterized in that: the fixed plate and the second base are provided with guide posts which are vertically arranged, and the lifting plate penetrates through the guide posts and is connected with the guide posts in a vertically sliding mode.

10. An implementation method of an injection molding production line for automatically implanting special-shaped blind nuts into a mold is characterized in that: the method comprises the following steps:

step 1: the nut and the positioning bolt are automatically screwed by utilizing the nut positioning bolt automatic screwing device to form a nut positioning bolt integrated piece;

step 2: grabbing the nut positioning bolt integrated piece in the step 1 through the manipulator and inserting the nut positioning bolt integrated piece into a corresponding hole of a mold;

and step 3: performing injection molding operation on the mold into which the nut positioning bolt integrated piece is inserted in the step 2, and opening the mold to obtain a plastic piece;

and 4, step 4: and (3) placing the plastic part in the step (3) in an automatic positioning bolt screwing-out device, and automatically rotating and taking out the positioning bolt in the plastic part by utilizing the automatic positioning bolt screwing-out device to obtain the plastic part implanted with the special-shaped nut.

Images