CN112810041A - Wire multistation injection moulding device - Google Patents

Abstract

The invention relates to wire multi-station injection molding equipment, which comprises an injection molding machine, a sliding base frame, a sliding rack, a pay-off rack and a sliding driving mechanism, wherein the sliding rack is arranged on the sliding base frame in a left-right linear sliding manner; the injection molding machine comprises two injection mold blocks which are arranged oppositely up and down, the two injection mold blocks can be close to or far away from each other, and an injection molding cavity for injecting a structural part is formed in each injection mold block; the pay-off rack comprises a pay-off side frame and a wire clamping assembly arranged on the pay-off side frame, the middle space surrounded by the pay-off side frame is a wire pulling space, the wire clamping assembly comprises two wire clamping head structures oppositely arranged on the left side and the right side of the wire pulling space respectively, and two ends of the wire are respectively clamped in the two wire clamping head structures of the wire clamping assembly and straightened along the left direction and the right direction; and the sliding driving mechanism drives the sliding rack to slide left and right and drives the pay-off rack to enter or leave between the two injection mold blocks.

Description

Wire multistation injection moulding device

Technical Field

The invention relates to the field of wire production, in particular to wire multi-station injection molding equipment.

Background

When a plurality of structures are moulded by injection on a wire, prior art can only set up a plurality of design frocks inside and outside injection mold, place one by one as required by the manpower, mould plastics one by one, can occupy a lot of man-hour of moulding plastics, and inefficiency still makes mistakes very easily. In addition, for some wires, the structural member has a directional requirement in the circumferential direction of the wire, and the directional requirement is a difficult point of injection molding of the strip line. In addition, the wires need to be accurately placed in and out of the mold in the operation process of injection molding with the wires, so that the wires are prevented from being damaged in the process of mold closing, and the process also takes much time.

Disclosure of Invention

In view of the above disadvantages of the prior art, the present invention provides a wire multi-station injection molding apparatus, which can perform multiple and continuous injection molding on a wire, reduce the process time, and improve the injection molding efficiency.

In order to achieve the purpose, the invention provides a wire multi-station injection molding device, which is used for injection molding of a structural part on a wire, and comprises an injection molding machine, a sliding base frame, a sliding rack arranged on the sliding base frame in a left-right linear sliding manner, a pay-off rack arranged on the sliding rack and a sliding driving mechanism; the injection molding machine comprises two injection mold blocks which are arranged oppositely up and down, the two injection mold blocks can be close to or far away from each other, and an injection molding cavity for injecting a structural part is formed in each injection mold block; the pay-off rack comprises a pay-off side frame and a wire clamping assembly arranged on the pay-off side frame, the middle space surrounded by the pay-off side frame is a wire pulling space, the wire clamping assembly comprises two wire clamping head structures oppositely arranged on the left side and the right side of the wire pulling space respectively, and two ends of the wire are respectively clamped in the two wire clamping head structures of the wire clamping assembly and straightened along the left direction and the right direction; and the sliding driving mechanism drives the sliding rack to slide left and right and drives the pay-off rack to enter or leave between the two injection mold blocks.

Furthermore, the injection molding cavities on the injection mold block are multiple and are arranged along the front-back direction, and the pay-off rack comprises multiple groups of wire clamping assemblies which are arranged in parallel along the front-back direction.

Furthermore, one end of the conducting wire is provided with a plastic body, the structure of the wire clamping head on one side of the wire clamping assembly comprises a positioning clamping groove arranged on the wire releasing side frame, the positioning clamping groove is matched with the plastic body, and the plastic body is clamped in the positioning clamping groove.

Furthermore, the pay-off rack is further provided with a stay wire adjusting mechanism, the stay wire adjusting mechanism comprises a stay wire support and a support adjusting structure for adjusting the front position and the rear position of the stay wire support, and a wire clamping head structure on one side of the wire clamping assembly is arranged on the stay wire support.

Furthermore, the pay-off rack is further provided with an auxiliary wire clamping mechanism, the auxiliary wire clamping mechanism comprises a wire clamping rod arranged on the pay-off side frame and a wire clamp arranged on the wire clamping rod, the wire clamping rod is arranged in the front-back direction and spans across a wire pulling space, and a wire is clamped in the wire clamp.

Furthermore, the sliding driving mechanism comprises a conveying belt, a driving wheel and a stepping motor, the conveying belt is arranged in a left-right extending mode, the driving wheel drives the conveying belt to move, the stepping motor drives the driving wheel to rotate, and the sliding rack is fixed with the conveying belt.

Furthermore, the sliding rack comprises a supporting seat frame, a lifting frame arranged at the upper end of the supporting seat frame, and a lifting telescopic cylinder arranged between the supporting seat frame and the lifting frame, the lifting telescopic cylinder is fixed on the supporting seat frame, a piston rod of the lifting telescopic cylinder is fixed at the lower end of the lifting frame, and the pay-off rack is installed on the lifting frame.

Further, slip rack upper end is equipped with pay off rack mounting surface, the pay off rack is laid on pay off rack mounting surface, wire multistation injection moulding equipment is still including setting up at the other unwrapping wire station rack in slip rack side and the lift actuating mechanism that drives unwrapping wire station rack and reciprocate, be equipped with a plurality of station planes that are used for placing the pay off rack on the unwrapping wire station rack and a plurality of station planes are arranged along upper and lower direction, when station plane and unwrapping wire rack mounting surface were leveled mutually, the slip rack can shift between pay off rack mounting surface and station plane.

Further, be equipped with the locking mechanism who fixes the slip rack on the slip rack, locking mechanism includes the locking cylinder that a plurality of levels were arranged, and the side about the slip rack is arranged to a plurality of locking cylinders, the locking hole has been seted up on the unwrapping wire side frame of pay off rack, when the pay off rack was located the slip rack, the piston rod of locking cylinder stretched out and inserts the locking hole.

Further, still include control system, still be equipped with the contact pick-up who links to each other with control system on the slip base frame, contact pick-up sets up in the one side relative with unwrapping wire station rack, the locking hole of slip rack is punctual with the locking cylinder relatively, the slip rack contacts with contact pick-up, control system is connected with the locking cylinder, control locking cylinder action.

As mentioned above, the multi-station wire injection molding equipment provided by the invention has the following beneficial effects:

the injection molding machine is provided with two injection mold blocks which are arranged up and down oppositely through a sliding base frame, a sliding rack, a pay-off rack and a sliding driving mechanism; before injection molding, with the both ends difference clamping of wire in two thread clamping head structures of thread clamping component, the wire keeps straightening the state along left right direction, then slide towards the injection mold piece right through the drive of sliding actuating mechanism slip rack straight line, it enters into between two injection mold pieces to drive the pay off rack, be close to the structure of moulding plastics on the wire through two injection mold pieces, accomplish the last structure of moulding plastics on the station of wire and mould plastics, then rethread slip rack drives the pay off rack and continues rectilinear sliding, carry out next structure work of moulding plastics. According to the mode, each lead only needs one-time clamping work, the pay-off rack is driven to move through the sliding rack, and continuous injection molding of a plurality of injection molding stations on the lead can be achieved. According to the multi-station wire injection molding equipment, the wire can be installed once to complete multi-station and continuous injection molding of the structural part, so that the process time is greatly reduced, the injection molding work efficiency is high, the position between the wire and the injection mold block is relatively stable, and the injection molding quality of the structural part is good.

Drawings

Fig. 1 is a schematic structural view of a wire multi-station injection molding apparatus according to the present invention.

Fig. 2 is a schematic structural view of the sliding table according to the present invention.

Fig. 3 is a schematic structural diagram of the pay-off stand according to the present invention.

Fig. 4 is a schematic view of the installation of the wire, the pay-off stand and the sliding stand in the present invention.

FIG. 5 is an enlarged view of circle A in FIG. 4

Fig. 6 is a schematic view of the wire multi-station injection molding apparatus of the present invention in a first state of operation.

Fig. 7 is a schematic view of the wire multi-station injection molding apparatus of the present invention in a second state of operation.

Fig. 8 is a schematic view of a third state of the wire multi-station injection molding apparatus of the present invention in operation.

Fig. 9 is a schematic view showing a fourth state of the wire multi-station injection molding apparatus of the present invention in operation.

Fig. 10 is a schematic view showing a fifth state of the wire multi-station injection molding apparatus of the present invention in operation.

Description of the element reference numerals

1 sliding base frame

2 sliding rack

21 lifting frame

22 support seat frame

23 lifting telescopic cylinder

24 pay-off rack mounting plane

25 pay-off rack limiting plane

3 pay-off rack

31 paying-off side frame

312 locking hole

313 wire clamping rod mounting hole

32 wire clamping assembly

321 thread clamping head structure

322 positioning card slot

33 space of stay wire

34 auxiliary wire clamping mechanism

341 thread clamping rod

342 wire clip

35 stay wire adjusting mechanism

351 stay wire bracket

352 stay wire rotating handle

353 pulling wire connecting rod

354 stay wire support beam

4 injection molding machine

41 injection mould block

5 sliding drive mechanism

51 conveyor belt

52 drive wheel

53 stepping motor

6 conducting wire

61 Plastic body

62 structural member

7 paying-off station rack

71 lifting driving mechanism

8 locking cylinder

9 contact sensor

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

It should be understood that the structures, proportions, and dimensions shown in the drawings and described herein are for illustrative purposes only and are not intended to limit the scope of the present invention, which is defined by the claims, but rather by the claims. In addition, the terms such as "upper", "lower", "left", "right" and "middle" used in the present specification are for convenience of description only, and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship thereof may be regarded as the scope of the present invention without substantial changes in the technical contents.

Referring to fig. 1 to 10, the invention provides a wire multi-station injection molding device, which is used for injection molding a structural member 62 on a wire 6, and comprises an injection molding machine 4, a sliding base frame 1, a sliding rack 2 which is arranged on the sliding base frame 1 in a manner of being capable of sliding linearly left and right, a pay-off rack 3 arranged on the sliding rack 2, and a sliding driving mechanism 5; the injection molding machine 4 comprises two injection mold blocks 41 which are arranged oppositely up and down, the two injection mold blocks 41 can be close to or far away from each other, and an injection molding cavity for injecting the structural part 62 is arranged on each injection mold block 41; the pay-off rack 3 comprises a pay-off side frame 31 and a wire clamping assembly 32 arranged on the pay-off side frame 31, a middle space surrounded by the pay-off side frame 31 is a wire pulling space 33, the wire clamping assembly 32 comprises two wire clamping head structures 321 which are oppositely arranged on the left side and the right side of the wire pulling space 33 respectively, and two ends of the lead 6 are installed and clamped in the two wire clamping head structures 321 of the wire clamping assembly 32 respectively and are straightened along the left and right directions; the sliding driving mechanism 5 drives the sliding rack 2 to slide left and right and drives the pay-off rack 3 to enter or leave between the two injection mold blocks 41.

In the present invention, the linear sliding direction of the sliding gantry 2 is taken as the left-right direction of the apparatus, and in the present embodiment, referring to fig. 1, the injection mold block 41 is located at the position of the right side portion of the sliding base frame 1, and before performing the injection work, the sliding gantry 2 is located at the left side of the injection mold block 41 outside the two injection mold blocks 41. The working principle of the wire multi-station injection molding equipment is as follows: before injection molding, the sliding rack 2 and the pay-off rack 3 are positioned outside the two injection mold blocks 41; the two ends of the wire 6 are respectively clamped in the two wire clamping head structures 321 of the wire clamping assembly 32, and the wire 6 is kept in a straight state along the left and right directions in the wire pulling space 33, which is shown in fig. 4; after the clamping work of the lead 6 is finished, the sliding rack 2 is driven by the sliding driving mechanism 5 to linearly slide towards the injection mold blocks 41 rightwards, the pay-off rack 3 is driven to enter between the two injection mold blocks 41, and an injection molding station (namely the position of a structural part 62 needing injection molding on the lead 6) in the lead 6 corresponds to an injection molding cavity of the injection mold blocks 41; then the two injection mold blocks 41 approach to each other, the structural part 62 is injected on the lead 6, injection molding of the structural part 62 on an injection molding station on the lead 6 is completed, then the two injection mold blocks 41 are separated, the lead 6 is separated from the two injection mold blocks 41, the pay-off rack 3 is driven by the sliding rack 2 to continue to slide linearly, the lead 6 moves along the straightening direction until the next injection molding station reaches the injection molding cavity of the injection mold block 41, and injection molding of the next structural part 62 is performed. According to the mode, each lead 6 only needs one-time clamping work, the pay-off rack 3 is driven to move through the sliding rack 2, and continuous injection molding of a plurality of injection molding stations on the lead 6 can be achieved. The injection molding machine 4 may use an existing injection molding machine 4, and the working principle thereof is not described herein. The stringing structures on the left side and the right side of the stringing assembly 32 can be the same or different, and the requirement that the wires 6 can be clamped is met.

According to the multi-station wire injection molding equipment, the wire 6 can be subjected to multi-station and continuous injection molding of the structural part 62 only by being installed once, so that the process time is greatly reduced, the injection molding work efficiency is improved, the position between the wire 6 and the injection mold block 41 is relatively stable, and the injection molding quality of the structural part 62 is good. Moreover, as the lead 6 is arranged in the pay-off rack 3 and is driven by the sliding rack 2, the installation process of the lead 6 is finished outside the injection mold block 41, and the damage of the injection mold block 41 to the lead 6 is avoided.

As a preferable design, in this embodiment, referring to fig. 3 and fig. 4, a plurality of injection cavities on the injection mold block 41 are arranged in the front-back direction, the pay-off rack 3 includes a plurality of groups of wire clamping assemblies 32, and the plurality of groups of wire clamping assemblies 32 are arranged in parallel with each other in the front-back direction. With this many wires 6 of can pressing from both sides simultaneously on same pay off rack 3, be parallel to each other between many wires 6, and can arrange along fore-and-aft direction equidistance, the die cavity of moulding plastics on the injection mold piece 41 and wire 6 one-to-one to this, can mould plastics in succession many wires 6 simultaneously, improve the work efficiency of moulding plastics.

Since a part of the conductor 6 has the molding 61 at one end thereof, for the conductor 6, when the structural member 62 is injection-molded on the conductor 6, the structural member 62 and the molding 61 have a relative position requirement in the circumferential direction of the conductor 6. As a preferred design, referring to fig. 3, 4 and 5, the wire clamping head structure 321 on one side of the wire clamping assembly 32 includes a positioning slot 322 disposed on the wire releasing side frame 31, and the positioning slot 322 is adapted to the plastic body 61, and the plastic body 61 is clamped in the positioning slot 322. The plastic body 61 can have a plurality of shapes, the shape of the positioning clamping groove 322 is matched with the plastic body 61, and the arrangement direction is determined according to the circumferential angle requirement between the plastic body 61 and the structural part 62, in this embodiment, see fig. 5, the right end of the lead 6 is provided with the plastic body 61 in a strip shape, the positioning clamping groove 322 is arranged on the right side frame of the paying-off side frame 31, the positioning clamping groove 322 is a strip-shaped groove and vertically extends, the right end of the lead 6 is fixed through the matching of the positioning clamping groove 322 and the plastic body 61, and the circumferential positioning of the lead 6 can be controlled by controlling the extending direction of the strip-shaped positioning clamping groove 322, so that the circumferential relative position between the structural part 62 and the plastic body 61 is determined, and the problem of difficult circumferential positioning of the structural part 62 in the injection molding process is solved.

In a preferred design, referring to fig. 3 and 4, the pay-off rack 3 is further provided with a pull-line adjusting mechanism 35, the pull-line adjusting mechanism 35 includes a pull-line bracket 351 and a bracket adjusting structure for adjusting the front-back position of the pull-line bracket 351, and the thread clamping head structure 321 on one side of the thread clamping assembly 32 is mounted on the pull-line bracket 351. In the present embodiment, the wire adjusting mechanism 35 is disposed at the left side of the wire space 33, and when there are multiple sets of wire clamping assemblies 32, it is preferable that the wire clamping head structures 321 of the multiple sets of wire clamping assemblies 32 located at the left side are all mounted on the wire support 351. After the wire 6 is mounted on the wire clamping assembly 32, the position of the wire pulling bracket 351 can be adjusted through the bracket adjusting structure to adjust the position of the left wire clamping head structure 321, so as to adjust the straightening degree of the wire 6. Specifically, in this embodiment, referring to fig. 3 and 4, the support adjusting structure includes a wire supporting beam 354 erected on the front and rear sides of the wire releasing side frame 31 in the front and rear direction, a wire connecting rod 353 having one end mounted on the wire supporting beam 354, a spring fitted on the wire connecting rod 353, and a wire rotating handle 352, the wire connecting rod 353 is arranged in the front and rear direction, the wire supporting frame 351 is mounted at the other end of the wire connecting rod 353, the middle portion of the wire rotating handle 352 is hinged to the wire supporting beam 354, and the hinge shaft thereof is in the front and rear direction, the upper end of the wire rotating handle 352 is connected to the wire supporting frame 351 through an adjusting lever passing through the wire supporting beam 354, so as to rotate the wire rotating handle 352, the upper end of the wire rotating handle 352 moves the adjusting lever leftwards, and the adjusting lever drives the wire supporting frame.

In the present embodiment, referring to fig. 3 and 4, an auxiliary wire clamping mechanism 34 is further provided on the pay-off rack 3, the auxiliary wire clamping mechanism 34 includes a wire clamping bar 341 mounted on the pay-off side frame 31, and a wire clamp 342 provided on the wire clamping bar 341, the wire clamping bar 341 is arranged in the front-back direction and spans the wire drawing space 33, and the wire 6 is clamped in the wire clamp 342. The number of the wire clamps 342 on the wire clamping rod 341 is the same as the number of the installed wires 6, and the wire clamps correspond to one another, and the auxiliary wire clamping mechanism 34 is arranged at a proper position of the wire pulling space 33 and used for clamping the middle position of the wires 6, so that the phenomenon that the wires 6 are too large in suspended length in the wire pulling space 33 is avoided, the effect of further stabilizing the wires 6 is achieved, and the injection molding quality of the structural member 62 is ensured. The auxiliary wire clamping mechanisms 34 can be provided with multiple groups according to actual needs, and preferably, in this embodiment, referring to fig. 3, waist-shaped holes are formed in two ends of the wire clamping rod 341, a row of wire clamping rod mounting holes 313 arranged left and right are formed in the front and rear sides of the paying-off side frame 31, the wire clamping rod 341 is fixed in the wire clamping rod mounting holes 313 by penetrating the waist-shaped holes through bolts, so that the auxiliary wire clamping mechanisms are convenient to mount, the positions of the auxiliary wire clamping mechanisms 34 in the left and right directions can be flexibly adjusted, the auxiliary wire clamping mechanisms 34 can be mounted at injection molding stations close to the wires 6, and when the sliding rack 2 drives the pay-off rack 3 to slide left and right, the auxiliary wire clamping mechanisms 34 can play a certain positioning role, so that the injection molding stations on which the wires 6 are moved are opposite to the injection molding cavities of the injection.

As a preferable design, in the present embodiment, referring to fig. 1 and fig. 6, the slide driving mechanism 5 includes a conveyor belt 51 extending in the left-right direction, a transmission wheel 52 for driving the conveyor belt 51 to move, and a stepping motor 53 for driving the transmission wheel 52 to rotate, and the slide gantry 2 is fixed to the conveyor belt 51. The stepping motor 53 is started by a start button to drive the conveyor belt 51 to move left and right, thereby realizing the left and right sliding of the driving sliding rack 2. Further preferably, slide rails arranged along the left-right direction are arranged on the slide base frame 1, a slide seat is arranged on the slide rack 2, the slide seat is mounted on the slide rails, and the slide rack 2 is ensured to be stable in direction and not to deviate when sliding through the slide seat and the slide rails, so that no deviation occurs when the structural member 62 is continuously injected.

In the present embodiment, referring to fig. 2, the sliding gantry 2 includes a supporting seat frame 22, a lifting frame 21 placed on the upper end of the supporting base, and a lifting/lowering telescopic cylinder 23 disposed between the supporting seat frame 22 and the lifting frame 21, the lifting/lowering telescopic cylinder 23 is fixed on the supporting seat frame 22, and the piston rod thereof is fixed on the lower end of the lifting frame 21, and the pay-off rack 3 is mounted on the lifting frame 21. Therefore, when the height of the lead 6 relative to the injection mold block 41 is inappropriate, the heights of the lifting frame 21 and the pay-off rack 3 can be adjusted through the stretching of the lifting telescopic cylinder 23, so that the height of the lead 6 is adjusted, and the use is flexible and convenient. Particularly, when the injection mold block 41 below the injection molding machine 4 is fixed, the height of the pay-off rack 3 can be adjusted by the lifting and telescoping cylinder 23 during the injection molding process, so that the lead 6 is close to the injection mold block 41 for injection molding, and the lead 6 is separated from the injection mold block 41 after the injection molding is completed and then the pay-off rack 3 is moved.

As a preferred design, the wire multi-station injection molding device includes a control system, and the control system may preferably adopt a PLC controller, and the control system is connected with the stepping motor 53 in the sliding driving mechanism 5 to control the action of the sliding driving mechanism 5. Therefore, the corresponding control program is set in the control system, the stepping motor 53 is driven to rotate, and the sliding motion of the sliding rack 2 is controlled, so that in the process of carrying out continuous injection molding for many times, the sliding rack 2 drives the pay-off rack 3 to be automatically controlled to start and stop every time and advance every time, and the accurate positioning of the injection molding structural part 62 on the lead 6 is ensured. Similarly, the control system is connected with the lifting telescopic cylinder 23 in the sliding rack 2, so that when the lifting action of the pay-off rack 3 is required in the injection molding engineering, the control system can also automatically control, namely, a series of relevant motions such as forward movement, up-down movement and the like of the pay-off rack 3 in the multiple continuous injection molding process are automatically completed through the control system, the working efficiency is improved, and the injection molding quality is guaranteed.

As a preferable design, referring to fig. 1 and fig. 6 to 10, the upper end of the sliding rack 2 is provided with a pay-off rack mounting plane 24, the pay-off rack 3 is placed on the pay-off rack mounting plane 24, the wire multi-station injection molding device further comprises a pay-off station rack 7 arranged beside the sliding rack 2, and a lifting driving mechanism 71 for driving the pay-off station rack 7 to move up and down, the pay-off station rack 7 is provided with a plurality of station planes for placing the pay-off rack 3, the station planes are arranged along the up-down direction, when the station planes are level with the pay-off rack mounting plane 24, the sliding rack 2 can be transferred between the pay-off rack mounting plane 24 and the station planes, so that a plurality of pay-off racks 3 can be arranged in the wire multi-station injection molding device, specifically in this embodiment, the pay-off racks 3 are two, the lifting driving mechanism 71 comprises two vertically arranged cylinders, the pay-off station rack 7 is driven to move up and down, and the pay-off rack mounting plane 24 is the upper end face of the lifting frame 21 of the sliding rack 2. Therefore, when a wire 6 is installed on one pay-off rack 3 and injection molding is carried out at the position of the injection mold block 41, the other pay-off rack 3 is positioned on the station plane of the pay-off station rack 7, and meanwhile, pay-off work is carried out, then the height of the pay-off station rack 7 is adjusted through the lifting driving mechanism 71, when the station plane and the pay-off rack installation plane 24 are level, the pay-off rack 3 is pushed to be transferred between the pay-off rack installation plane 24 and the station plane, the waiting time of the injection molding machine 4 can be reduced, the equipment utilization rate is improved, and the overall injection molding operation efficiency is improved.

Further preferably, in this embodiment, referring to fig. 2 and 4, a locking mechanism for fixing the sliding rack 2 is provided on the sliding rack 2, the locking mechanism includes a plurality of horizontally arranged locking cylinders 8, the plurality of locking cylinders 8 are arranged on the left and right sides of the sliding rack 2, a locking hole 312 is provided on the pay-off side frame 31 of the pay-off rack 3, and a piston rod of the locking cylinder 8 is inserted into the locking hole 312 when extending out. The quantity of locking cylinder 8 can set up as required, and preferably, the side also can be equipped with locking cylinder 8 around sliding table frame 2, realizes diversified locking. When the pay-off rack 3 is pushed up to the pay-off rack mounting plane 24 of the sliding rack 2 from the pay-off station rack 7, the locking hole 312 in the pay-off rack 3 is aligned with the locking cylinder 8, the piston rod of the locking cylinder 8 is controlled to be inserted into the locking hole 312 when extending out, the pay-off rack 3 is locked, and the pay-off rack 3 is fixedly mounted on the sliding rack 2. Further, pay off rack mounting plane 24 left and right sides at sliding rack 2 is provided with pay off rack limiting plane 25, and when pay off rack 3 was from being pushed to pay off rack mounting plane 24 on, both ends were close to pay off rack limiting plane 25 respectively about pay off rack 3 to this front and back position of injecing pay off rack 3.

Further preferably, in the embodiment, referring to fig. 2 and 4, the wire multi-station injection molding device includes a control system, the sliding base frame 1 is further provided with a contact sensor 9 connected with the control system, the contact sensor 9 is arranged on the side opposite to the pay-off station frame 7, when the locking hole 312 of the sliding frame 2 is aligned with the locking cylinder 8, the sliding frame 2 is in contact with the contact sensor 9, and the control system is connected with the locking cylinder 8 and controls the locking cylinder 8 to act. Specifically in this embodiment, unwrapping wire station rack 7 sets up by sliding base frame 1 rear side, contact sensor 9 sets up near the preceding side of pay off rack mounting plane 24 on sliding rack 2, with this with pay off rack 3 forward promotion to pay off rack mounting plane 24 from pay off station rack 7, when pay off rack 3 contacts with contact sensor 9, locking hole 312 aligns with locking cylinder 8 this moment, contact sensor 9 transmits sensing signal for control system, control system control locking cylinder 8 is automatic to be stretched out, insert locking hole 312, with this accurate location and the automatic locking of realization pay off rack 3. Preferably, a positioning block can be further arranged at the position of the contact sensor 9, the pay-off rack 3 abuts against the positioning block when being contacted with the contact sensor 9, and collision damage to the contact sensor 9 caused by the pay-off rack 3 in the pushing process is avoided. The control system can adopt a PLC controller and a corresponding electromagnetic valve to control the action of the locking cylinder 8.

Referring to fig. 6 to 10, fig. 6 to 10 are schematic diagrams showing five different states of the injection molding of the structural member 62 by using the wire multi-station injection molding apparatus in the present embodiment, and the general operation process of the injection molding by using the wire multi-station injection molding apparatus in the present embodiment is described as follows:

(a) an upper pay-off rack and a lower pay-off rack 3 are placed on the pay-off station rack 7, pay-off work is carried out on the pay-off rack 3 above, a plurality of wires 6 are well installed, and the wires 6 are kept to be stretched straight by a stay wire adjusting mechanism 35, which is shown in fig. 6.

(b) The height of the pay-off station rack 7 is adjusted to enable the station plane on the upper side of the pay-off station rack to be flush with the pay-off rack mounting plane 24 of the sliding rack 2, the pay-off rack 3 is pushed forwards to the pay-off rack mounting plane 24 until the pay-off rack 3 is in contact with the contact sensor 9, the control system controls the locking cylinder 8 to act, and the pay-off rack 3 is automatically locked and fixed, and the method is shown in fig. 7.

(c) Pressing a start button, starting a stepping motor 53 in a sliding driving mechanism 5, installing a preset program in a control system, controlling the stepping motor 53 to act, driving a conveyor belt 51 to move rightwards, driving a sliding rack 2 and a pay-off rack 3 to linearly slide rightwards until the pay-off rack 3 is positioned between two injection mold blocks 41, simultaneously injecting a structural part 62 on a plurality of leads 6 by using the injection mold blocks 41, and controlling the stepping motor 53 to act through the control system, so that the pay-off rack 3 moves rightwards for a plurality of times (namely moves for a plurality of times along the extending direction of the leads 6), and performing a plurality of times of continuous injection molding on a plurality of injection molding stations on the leads 6; and simultaneously carrying out the paying-off operation on the pay-off rack 3 on the pay-off station rack 7 during the injection molding operation, and referring to fig. 8.

(d) After the injection molding of the lead 6 in the pay-off rack 3 on the sliding rack 2 is completed, the stepping motor 53 is controlled to drive the sliding rack 2 to slide leftwards and return to the pay-off station rack 7, the locking of the pay-off rack 3 on the sliding rack 2 is released, see fig. 9, and then the pay-off rack 3 is pushed backwards and returns to a station plane above the pay-off station rack 7.

(e) The action of a lifting driving mechanism 71 at the lower end of the pay-off station rack 7 is controlled, the station plane of the pay-off station rack 7 to the lower side is lifted to be flush with the pay-off rack mounting plane 24 of the sliding rack 2, the pay-off rack 3 on the station plane is pushed forwards to the pay-off rack mounting plane 24 until the pay-off rack 3 is in contact with the contact sensor 9, and the control system controls the locking cylinder 8 to lock and fix the pay-off rack 3, and the drawing 10 shows that the drawing shows that.

Then, the direction and the injection molding can be alternately performed by the two pay-off stands 3 in the manner described above with reference to the processes (c) to (e), and the operation is repeated to continuously perform the injection molding work.

From the above, the multi-station wire injection molding equipment in the embodiment has the following advantages: (1) the multiple wires 6 can be subjected to multiple and continuous injection molding simultaneously, and each wire 6 only needs to be installed once, so that the process time, particularly the installation time of the wires 6, is greatly reduced, and the working efficiency is improved; (2) by adopting the plurality of pay-off frames 3, the pay-off work and the injection molding work can be synchronously carried out, so that the waiting time of the injection molding machine 4 is reduced, the utilization rate and the capacity of equipment are improved, the production time is reduced, and the production cost is reduced; (3) the problem that the structural part 62 is difficult to position when the lead 6 with the plastic body 61 is used for injection molding the structural part 62 can be effectively solved, and the product quality is improved; (4) the multi-station wire injection molding equipment has the advantages of stable structure, accurate positioning, stable and reliable work, good injection molding quality and high automation degree, and can effectively avoid the damage to the wire 6 in the injection molding process.

In conclusion, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (10)

1. A wire multistation injection molding machine for injection molding structure (62) on wire (6), includes injection molding machine (4), its characterized in that: the wire drawing machine also comprises a sliding base frame (1), a sliding rack (2) which can be linearly arranged on the sliding base frame (1) in a left-right sliding manner, a pay-off rack (3) arranged on the sliding rack (2) and a sliding driving mechanism (5); the injection molding machine (4) comprises two injection mold blocks (41) which are arranged oppositely up and down, the two injection mold blocks (41) can be close to or far away from each other, and an injection molding cavity for an injection molding structural part (62) is formed in each injection mold block (41); the pay-off rack (3) comprises a pay-off side frame (31) and a wire clamping assembly (32) arranged on the pay-off side frame (31), a middle space enclosed by the pay-off side frame (31) is a wire pulling space (33), the wire clamping assembly (32) comprises two wire clamping head structures (321) which are oppositely arranged on the left side and the right side of the wire pulling space (33), and two ends of the lead (6) are respectively clamped in the two wire clamping head structures (321) of the wire clamping assembly (32) and straightened along the left and right directions; the sliding driving mechanism (5) drives the sliding rack (2) to slide left and right and drives the pay-off rack (3) to enter or leave between the two injection mold blocks (41).

2. The wire multi-station injection molding apparatus of claim 1, wherein: the injection molding die cavities on the injection mold blocks (41) are multiple and arranged in the front-back direction, the pay-off rack (3) comprises multiple groups of wire clamping assemblies (32), and the multiple groups of wire clamping assemblies (32) are arranged in parallel in the front-back direction.

3. The wire multi-station injection molding apparatus of claim 1, wherein: one end of the lead (6) is provided with a plastic body (61), a wire clamping head structure (321) on one side of the wire clamping assembly (32) comprises a positioning clamping groove (322) arranged on the wire releasing side frame (31), the positioning clamping groove (322) is matched with the plastic body (61), and the plastic body (61) is clamped in the positioning clamping groove (322).

4. The wire multi-station injection molding apparatus of claim 1, wherein: still be equipped with on pay off rack (3) and act as go-between adjustment mechanism (35), act as go-between adjustment mechanism (35) including one support (351) of acting as go-between and adjust the support adjustment structure who acts as go-between support (351) front and back position, the one side trapping mechanism head structure (321) of trapping mechanism (32) are installed on support (351) of acting as go-between.

5. The wire multi-station injection molding apparatus of claim 1, wherein: the paying-off rack is characterized in that an auxiliary wire clamping mechanism (34) is further arranged on the paying-off rack (3), the auxiliary wire clamping mechanism (34) comprises a wire clamping rod (341) installed on the paying-off side frame (31) and a wire clamp (342) arranged on the wire clamping rod (341), the wire clamping rod (341) is arranged in the front-back direction and spans a wire pulling space (33), and the wire (6) is clamped in the wire clamp (342).

6. The wire multi-station injection molding apparatus of claim 1, wherein: the sliding driving mechanism (5) comprises a conveying belt (51) which is arranged in a left-right extending mode, a driving wheel (52) which drives the conveying belt (51) to move and a stepping motor (53) which drives the driving wheel (52) to rotate, and the sliding rack (2) is fixed with the conveying belt (51).

7. The wire multi-station injection molding apparatus of claim 1, wherein: the sliding table frame (2) comprises a supporting seat frame (22), a lifting frame (21) arranged at the upper end of the supporting seat frame (22) and a lifting telescopic cylinder (23) arranged between the supporting seat frame (22) and the lifting frame (21), the lifting telescopic cylinder (23) is fixed on the supporting seat frame (22), a piston rod of the lifting telescopic cylinder is fixed at the lower end of the lifting frame (21), and the pay-off rack (3) is installed on the lifting frame (21).

8. The wire multi-station injection molding apparatus of claim 1, wherein: slide rack (2) upper end and be equipped with pay off rack mounting plane (24), lay on pay off rack mounting plane (24) pay off rack (3), wire multistation injection moulding equipment is still including setting up pay off station rack (7) other in slide rack (2) side and drive lift actuating mechanism (71) that pay off station rack (7) reciprocated, be equipped with a plurality of station planes that are used for placing pay off rack (3) on pay off station rack (7), and a plurality of station planes are arranged along upper and lower direction, when station plane flushes with pay off rack mounting plane (24) mutually, slide rack (2) can shift between pay off rack mounting plane (24) and station plane.

9. The wire multi-station injection molding apparatus of claim 8, wherein: be equipped with the locking mechanism who fixes sliding rack (2) on sliding rack (2), locking mechanism includes locking cylinder (8) that a plurality of levels were arranged, and side about sliding rack (2) is arranged in a plurality of locking cylinders (8), locking hole (312) have been seted up on unwrapping wire side frame (31) of pay off rack (3), when pay off rack (3) were located sliding rack (2), the piston rod of locking cylinder (8) stretches out and inserts locking hole (312).

10. The wire multi-station injection molding apparatus of claim 9, wherein: still include control system, still be equipped with contact sensor (9) that link to each other with control system on the base frame that slides (1), contact sensor (9) set up in the one side relative with unwrapping wire station rack (7), locking hole (312) of sliding rack (2) are punctual relatively with locking cylinder (8), sliding rack (2) and contact sensor (9) contact, control system is connected, control locking cylinder (8) action with locking cylinder (8).

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