CN212072802U

CN212072802U - Multi-valve needle driving device

Info

Publication number: CN212072802U
Application number: CN201922193091.6U
Authority: CN
Inventors: 方加根; 金维新; 汪益平; 韩小英
Original assignee: Zhejiang Snake Hot Runner Technology Co ltd
Current assignee: Zhejiang Snake Hot Runner Technology Co ltd
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2020-12-04
Anticipated expiration: 2029-12-09

Abstract

The utility model discloses a many valves needle drive arrangement, including slide rail, sliding block, driving piece, needle connecting block and spacing part, evenly install a plurality of valve needle subassemblies on the needle connecting block, the driving piece is used for driving the sliding block action of making a round trip in the slide rail, spacing part restriction needle connecting block is the action only from top to bottom, through drive structure swing joint between sliding block and the needle connecting block, through drive structure drive needle connecting block up-and-down action when the sliding block makes a round trip to move. The utility model has the advantages of be convenient for improve the action uniformity of many needles, reduce mould manufacturing cost.

Description

Multi-valve needle driving device

Technical Field

The utility model relates to a carry out the needle drive arrangement of on-off control to the nozzle sprue gate among the hot runner mold, especially relate to the many valve needles drive arrangement who carries out simultaneous control to a plurality of nozzle sprue gates.

Background

In a hot runner mold system, for injection molding parts with multiple cavities or injection molding parts with complex shapes, a plurality of gates are usually required to be arranged, a plurality of nozzles are used for pouring a cavity at the same time, in the existing multi-nozzle system, a valve needle is adopted for the vertical movement of the valve needle and is provided with a cylinder or an oil cylinder, and the cylinder or the oil cylinder is controlled by a control system to move up and down simultaneously, so that the valve needle of each nozzle synchronously opens or closes the gates. In addition, because of the volume limitation of the air cylinder or the oil cylinder, the distance between two adjacent nozzles cannot be too close, the arrangement of a pouring gate position during the design of the mold is influenced, and the pouring gate cannot be completely arranged according to an ideal state.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem that exists among the prior art, provide a many valves needle drive arrangement that not only convenient simple, but also can effectively stabilize work simultaneously.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a many valves needle drive arrangement, includes slide rail, sliding block, driving piece, needle connecting block and spacing part, evenly install a plurality of valve needle subassemblies on the needle connecting block, the driving piece is used for driving the sliding block and makes a round trip to move in the slide rail, spacing part restriction needle connecting block is only the up-and-down motion, through drive structure swing joint between sliding block and the needle connecting block, through drive structure drive needle connecting block up-and-down motion when the sliding block makes a round trip to move.

The utility model drives the valve needle component to move up and down through the back and forth movement of the sliding block, and drives a plurality of valve needles through a driving piece, so that the action consistency of the valve needles is ensured, thereby ensuring the stable quality of products; compare a traditional needle and adopt a driving piece to drive, the interval of two driving pieces can be very big like this, adopt the utility model discloses a mechanism can be very big reduce the distance between two needles in order to adapt to not unidimensional mould, makes the runner position set up according to the ideal state during the mould design, reduces the use of driving piece simultaneously and has reduced the cost of mould.

The drive structure includes that the slant is seted up in spout on the lateral wall of sliding block both sides and is located needle connecting block both sides and with spout sliding fit's sloping block, and it is more smooth when sliding block drive needle connecting block up-and-down motion, not fragile.

The slide rail is distributed and two bisymmetry settings are formed along sliding block length direction by a plurality of fixed blocks, the fixed block is fixed in on the mould, improves the stability of sliding block when making a round trip to slide.

The limiting component is provided with at least one positioning pin, the valve needle connecting block is provided with a positioning pin hole for the positioning pin to pass through, the positioning pin is fixed on the mold, the valve needle connecting block can slide up and down along the positioning pin, the stability of the valve needle connecting block during up-and-down movement is improved, and the stability of opening or closing the pouring gate of the valve needle is further ensured.

Set up in the middle of the locating pin and cross the connecting channel and be linked together, improve the lubricated effect between locating pin and the needle connecting block, smoothness nature when guaranteeing the needle connecting block up-and-down motion.

The oil hole that is used for communicateing spout and location pinhole is seted up on the sloping block, the oil groove that the oil hole is linked together is seted up on the sloping block surface, improves the lubricated effect between sloping block and the spout, and smoothness nature when guaranteeing the sliding block drive needle connecting block and move from top to bottom.

Offer on the sliding block and be used for intercommunication spout and have the aperture, the aperture is used for with lubricating-oil nozzle articulate, the annular has been seted up on the outer wall of locating pin, the second oilhole of aperture and annular through fixed block improves the lubricated effect between needle connecting block and the fixed block, guarantees the smoothness nature of sliding block when making a round trip to move along the fixed block.

Oil outlet channels are formed in the two sides of the oil groove, so that the lubricating effect between the two side walls of the inclined block and the sliding groove is improved, and the smoothness of the sliding block driving the valve needle connecting block to move up and down is guaranteed.

The valve needle subassembly includes valve needle, valve needle fixed screw, valve needle connector and valve needle adjusting screw, the valve needle passes through valve needle fixed screw to be fixed in on the valve needle connector, the valve needle connector passes through valve needle adjusting screw spiro union on the valve needle connecting block, the regulation of the valve needle of being convenient for.

The sliding block is connected to the output shaft of the driving part through the connector, the die is provided with a limiting block, and when the connector is abutted to the limiting block, the valve needle assembly moves to a limit distance.

Compared with the prior art, the utility model has the advantages of be convenient for improve the action uniformity of many needles, reduce mould manufacturing cost.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

Fig. 3 is a schematic structural view of the valve needle assembly of the present invention.

Fig. 4 is a sectional view of the positioning pin of the present invention.

Fig. 5 is a schematic view of the assembly of the present invention with a mold.

Fig. 6 is a schematic structural diagram of the valve needle connecting block of the present invention.

Fig. 7 is a schematic structural diagram of the middle sliding block of the present invention.

In the figure, 1, a slide rail; 2. a slider; 3. a drive member; 4. a valve needle connecting block; 41. a positioning pin hole; 42. A second oil hole; 5. a chute; 51. a valve needle; 52. a valve needle fixing screw; 53. a valve needle connector; 54. a valve needle adjusting screw; 6. a sloping block; 61. an oil hole; 62. an oil sump; 621. an oil outlet channel; 7. a fixed block; 8. Positioning pins; 81. a small hole; 82. a ring groove; 83. a connecting channel; 9. a connector; 10. and a limiting block.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1-7, a multi-valve needle driving device comprises a sliding rail 1, a sliding block 2, a driving part 3, a valve needle connecting block 4 and a limiting part, wherein a plurality of valve needle assemblies are uniformly installed on the valve needle connecting block 4, the driving part 3 is used for driving the sliding block 2 to move back and forth in the sliding rail 1, the limiting part limits the valve needle connecting block 4 to move up and down only, the sliding block 2 is movably connected with the valve needle connecting block 4 through a driving structure, and the valve needle connecting block 4 is driven to move up and down through the driving structure when the sliding block 2 moves back and.

Preferably, in order to improve the stability of the sliding block 2 during the back and forth movement, the driving member 3 is a cylinder, which is a prior art and therefore not described herein.

Preferably, in another embodiment, in order to improve stability when the plurality of needles operate simultaneously, two multi-needle driving devices may be provided on the same mold.

Further saying in detail, the drive structure includes that the slant is seted up spout 5 on the lateral wall of 2 both sides of sliding block and is located 4 both sides of needle connecting block and with spout 5 sliding fit's sloping block 6, the inner wall of spout 5 is inconsistent with the inclined plane of sloping block 6, when sliding block 2 makes a round trip to move, the sloping block 6 upwards or moves downwards after receiving the extrusion force of the inner wall of spout 5, sloping block 6 drives needle subassembly upper and lower action through the needle connecting block, thereby realize that the needle opens or closes the sprue gate, compare other structures, sloping block 6 and spout 5's simple structure, the drive effect is good, long service life.

Further saying, slide rail 1 is distributed and two bisymmetry settings by a plurality of fixed blocks 7 along 2 length direction of sliding block and constitutes, and fixed block 7 is fixed in on the mould 01, in this embodiment, the quantity of fixed block 7 among every many valve needle drive arrangement sets up to two, sets up threely in the both sides of sliding block 2 interval respectively for stability when sliding block 2 slides improves, produces the normal action that the upper and lower action influences valve needle connecting block 4 when avoiding sliding block 2 to slide.

Further saying, spacing part selects for use locating pin 8 and sets up at least one, and in this embodiment, the quantity of locating pin 8 sets up to two, sets up the locating pin hole 41 that supplies locating pin 8 to pass on the

needle connecting block

4, and 8 tip of locating pin pass locating pin hole 41 and are fixed in on the mould 01, and needle connecting block 4 can follow locating pin 8 and slide from top to bottom, through the horizontal action of 8 restriction needle connecting blocks 4 of locating pin, and is spacing effectual, simple to operate.

In further detail, a small hole 81 is formed in the middle of the positioning pin 8, the small hole 81 is used for being connected with a lubricating oil nozzle joint, an annular groove 82 is formed in the outer wall of the positioning pin 8, the small hole 81 and the annular groove 82 are communicated through a connecting channel 83, after lubricating oil is injected into the small hole 81, the lubricating oil flows into the annular groove 82 through the connecting channel 83, the lubricating oil in the annular groove 82 can be smeared on the inner wall of the positioning pin hole 41 and then on the outer wall of the positioning pin 8, the lubricating effect of the positioning pin 8 and the positioning pin hole 41 is improved, dry friction between the positioning pin 8 and the positioning pin hole 41 is avoided, the friction loss of the inner wall of the positioning pin 8 and the inner wall of the positioning pin hole 41 is reduced, and the effect that the positioning pin 8 limits the.

In a further detail, the oblique block 6 is provided with an oil hole 61 for communicating the sliding groove 5 with the positioning pin hole 41, the surface of the oblique block 6 is provided with an oil groove 62 communicated with the oil hole 61, lubricating oil in the positioning pin hole 41 flows into the oil groove 62 through the oil hole 61, the inner wall of the contact surface of the sliding groove 5 and the oil groove 62 is lubricated along with the relative sliding of the oblique block 6 and the sliding groove 5, the dry friction between the oblique block 6 and the sliding groove 5 is avoided, and the lubricating effect is improved.

In more detail, the sliding block 2 is provided with a second oil hole 42 for communicating the sliding groove 5 with the fixed block 7, and the lubricating oil in the sliding groove 5 flows into the contact surface between the sliding block 2 and the fixed block 7 through the second oil hole 42, so that the lubricating effect before the sliding block 2 and the fixed block 7 is improved.

Preferably, oil outlet channel 621 has all been seted up to oil groove 62 both sides, and along with the relative slip of sloping block 6 and spout 5, lubricating oil in the oil groove 62 can paint on the both sides inner wall of spout 5 through oil outlet channel 621 to lubricated also obtained on the both sides inner wall that makes sloping block 6 and spout 5 contact, the smoothness nature when further having improved needle connecting block 4 upper and lower action.

In further detail, the valve needle assembly comprises a valve needle 51, a valve needle fixing screw 52, a valve needle connector 53 and a valve needle adjusting screw 54, the valve needle 51 is fixed on the valve needle connector 53 through the valve needle fixing screw 52, the valve needle connector 53 is screwed on the valve needle connecting block 4 through the valve needle adjusting screw 54, the valve needle fixing screw 52 is screwed at the lower end of the valve needle connector 53, a through hole for the needle head part of the valve needle to pass through is formed in the center of the valve needle connecting block, the valve needle connector 4 is connected with the valve needle adjusting screw 54 through a screw thread, the valve needle connector and the valve needle adjusting screw are both fixed on the valve needle connecting block, when the valve needle connecting block moves up and down, the valve needle connector 4 moves up and down along with the screw thread, so that the valve needle connector 4 is adjusted, the adjusting; the valve needle fixing screw 52 is convenient for the installation and replacement of the valve needle, has good fixing effect on the valve needle, and is favorable for improving the sealing property of the valve needle when the valve needle opens and closes the pouring gate.

Further saying in detail, sliding block 2 is connected on the output shaft of driving piece 3 through connector 9, is equipped with stopper 10 on the mould 01, and when connector 9 contradicted on stopper 10, the needle subassembly moved to the ultimate distance, and stopper 10 locks on mould 01 through the screw, prevents that valve needle subassembly movement distance overlength and sprue gate inner wall from colliding.

Preferably, the valve needle connecting block 4 comprises two connecting scattered blocks, the two connecting scattered blocks are respectively inserted into two sides of the connecting head 9, and the valve needle connecting block 4 is clamped between the two connecting scattered blocks, so that the valve needle connecting block 4 is convenient to produce.

Preferably, the driving member 3 is fixed to the mold by screws or to the connecting member 02 at the side of the mold by screws.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although terms are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention and should not be interpreted as imposing any additional limitations that are contrary to the spirit of the present invention.

Claims

1. A multi-valve needle driving device is characterized in that: including slide rail (1), sliding block (2), driving piece (3), needle connecting block (4) and spacing part, evenly install a plurality of valve needle subassemblies on needle connecting block (4), driving piece (3) are used for driving sliding block (2) to make a round trip to move in slide rail (1), spacing part restriction needle connecting block (4) only can the up-and-down motion, through drive structure swing joint between sliding block (2) and needle connecting block (4), through drive structure drive needle connecting block (4) up-and-down motion when sliding block (2) make a round trip to move.

2. A multi-valve needle drive device as claimed in claim 1, wherein: the drive structure includes that spout (5) on sliding block (2) both sides lateral wall are seted up to the slant and locate needle connecting block (4) both sides and with spout (5) sliding fit's sloping block (6).

3. A multi-valve needle drive device as claimed in claim 2, wherein: the sliding rail (1) is formed by a plurality of fixing blocks (7) which are distributed along the length direction of the sliding block (2) and are arranged in a pairwise symmetrical mode, and the fixing blocks (7) are fixed on the die (01).

4. A multi-valve needle drive device as claimed in claim 3, wherein: spacing part selects for use locating pin (8) and sets up at least one, set up on needle connecting block (4) and supply locating pin hole (41) that locating pin (8) passed, locating pin (8) are fixed in on mould (01), needle connecting block (4) can be followed locating pin (8) and slided from top to bottom.

5. A multi-valve needle drive device as claimed in claim 4, wherein: seted up aperture (81) in the middle of locating pin (8), aperture (81) are used for with lubricating-oil nozzle articulate, annular (82) have been seted up on the outer wall of locating pin (8), aperture (81) and annular (82) are linked together through connect passage (83).

6. A multi-valve needle drive device as claimed in claim 5, wherein: the oil groove type positioning device is characterized in that the inclined block (6) is provided with an oil hole (61) used for communicating the sliding groove (5) with the positioning pin hole (41), and the surface of the inclined block (6) is provided with an oil groove (62) communicated with the oil hole (61).

7. A multi-valve needle drive device as claimed in claim 6, wherein: and a second oil hole (42) for communicating the sliding groove (5) with the fixed block (7) is formed in the sliding block (2).

8. A multi-valve needle drive device as claimed in claim 6, wherein: and oil outlet channels (621) are formed in the two sides of the oil groove (62).

9. A multi-valve needle drive device as claimed in claim 1, wherein: the valve needle assembly comprises a valve needle (51), a valve needle fixing screw (52), a valve needle connector (53) and a valve needle adjusting screw (54), the valve needle (51) is fixed on the valve needle connector (53) through the valve needle fixing screw (52), and the valve needle connector (53) is connected onto the valve needle connecting block (4) through the valve needle adjusting screw (54) in a threaded mode.

10. A multi-valve needle drive device as claimed in claim 3, wherein: sliding block (2) are connected on the output shaft of driving piece (3) through connector (9), be equipped with stopper (10) on mould (01), when connector (9) contradict on stopper (10), the needle subassembly moves to the limit distance.