CN208788966U - A kind of flight control both ends tapping injection mold - Google Patents

Abstract

The utility model discloses a kind of flights to control both ends tapping injection mold, including mutually matched male model and master mold, and the cavity slide block with injection die cavities is provided on male model；The first thread bar is provided on master mold；The second thread bar is provided on male model；First thread bar and the second thread bar protrude into injection die cavities；The first rotate gear is arranged in the first thread bar tail end；The first servo motor of installation the first driving gear is provided on master mold；First driving gear controls gear by first stroke and connect with the first rotate gear, and first servo motor drives the rotation of the first thread bar；The first helicla flute is provided in the gear disk of first stroke control gear；The side of first stroke control gear is provided with the first touch-control sliding block.The utility model uses the structure of both ends tapping, improves the quality of product, while controlling control of the gear realization to first servo motor by first stroke, control precision is high, realizes the fast demoulding of product.

Description

A helical stroke control two-end tapping injection mold

technical field

The utility model relates to the field of injection moulds, in particular to an injection mould for screw stroke control of tapping at both ends.

Background technique

Injection mold is an important process equipment for the production of various industrial products. With the rapid development of the plastic industry and the promotion and application of plastic products in aviation, aerospace, electronics, machinery, ships and automobiles and other industrial sectors, the scope of application of injection molds has become more and more wider. Injection mold is a tool for producing plastic products; it is also a tool for giving plastic products complete structure and precise dimensions. Injection molding is a processing method used in mass production of some complex shapes. Specifically, it refers to the injection of heated and melted plastic into the cavity of the injection molding machine at high pressure, and after cooling and solidification, the molded product is obtained.

The adjusting nut is a common connection fastener. At present, the adjusting nut is often formed by injection molding, which has the characteristics of fast forming and low manufacturing cost. Referring to Figure 1, it is a common adjusting nut with a hollow structure inside and two threads. Referring to Figure 2, the existing injection mold usually adopts the first thread core 1' and the second thread core 2' to extend into the injection cavity from one end for injection molding, and the small thread at the front end of the first thread core 1' is used for injection molding. The thread 3' and the large thread 4' at the front end of the second thread core realize the forming of the thread in the adjusting nut. However, during the injection molding process of the above-mentioned injection mold, a burr will appear at the parting joint A' of the existing mold, which affects the quality of the adjusting nut and makes the adjusting nut unable to be used normally. At the same time, the existing injection mold also has the problem of difficulty in demoulding.

Utility model content

In order to solve the above-mentioned technical problems, the utility model provides an injection mold for screw stroke control tapping on both ends, which adopts the method of tapping on both ends, and realizes the rotation stroke control through the cooperation of the first stroke control gear and the second stroke control gear. The invention solves the problem that burrs may appear at the parting joint of the existing mold, which affects the quality of the adjusting nut and makes the adjusting nut unable to be used normally.

In order to achieve the above purpose, the technical scheme of the present utility model is as follows: an injection mold for tapping both ends of the screw stroke control, including a male mold and a female mold that cooperate with each other, and a cavity slider is movably arranged on the male mold. The cavity slider is provided with an injection molding cavity; the female mold is provided with a first screw rod; the male mold is provided with a second screw rod; the first screw rod and the first screw rod Two threaded rods respectively extend into the injection molding cavity from both ends of the injection molding cavity; a first rotating gear is sleeved at the tail end of the first threaded rod, and the first threaded rod is connected to the injection molding cavity. The first rotating gear rotates synchronously; a first servo motor is arranged on the master mold, and a first drive gear is sleeved and installed on the drive shaft of the first servo motor; the first drive gear passes through the first stroke The control gear is connected with the first rotating gear, the first stroke control gear is meshed with the first driving gear and the first rotating gear respectively, and the first servo motor drives the first screw rod to rotate; A first helical groove is provided on the gear disk surface of the first stroke control gear, and the first helical groove is spirally arranged from the inner side to the outer side of the gear disk surface of the first stroke control gear; A first touch slider is arranged on one side of the gear; the first touch slider is movably arranged along the radial direction of the first stroke control gear, and one end of the first touch slider is arranged with a first touch slider. an engaging bump; the first engaging bump is clamped in the first helical groove, and when the first stroke control gear rotates, the first touch slider is controlled along the first stroke For the radial movement of the gear, a first touch switch is arranged on the movement path of the first touch slider, and the first touch switch controls the start and stop of the first servo motor.

As a preferred solution of the present invention, a second rotating gear is sleeved at the end of the second screw rod, and the second screw rod rotates synchronously with the second rotating gear; A second servo motor is arranged on the second servo motor, and a second driving gear is sleeved and installed on the driving shaft of the second servo motor; the second driving gear is connected with the second rotating gear through the second stroke control gear, and the The second stroke control gear meshes with the second drive gear and the second rotation gear respectively, and the second servo motor drives the second screw rod to rotate; a gear plate of the second stroke control gear is provided with a second helical groove, the second helical groove is spirally arranged from the inner side to the outer side of the gear disk surface of the second stroke control gear; a second touch slider is provided on one side of the second stroke control gear; The second touch slider is movably arranged along the radial direction of the second stroke control gear, and one end of the second touch slider is provided with a second engagement bump; the second engagement bump It is clamped in the second helical groove. When the second stroke control gear rotates, the second touch slider moves along the radial direction of the second stroke control gear. A second touch switch is arranged on the moving path of the slider, and the second touch switch controls the start and stop of the second servo motor.

As a preferred solution of the present utility model, an upper fixing plate is arranged on the female die; a positioning pin is arranged on the upper fixing plate; The locating hole where the locating pin fits.

As a preferred solution of the present invention, the number of the injection molding cavity is more than one.

As a preferred solution of the present invention, each injection molding cavity is correspondingly provided with one of the first threaded rods and one of the second threaded rods; the first threaded rod in the adjacent injection molding cavity A first connecting gear is arranged between the rods, and the first connecting gear is meshed with the first rotating gear to realize the synchronous rotation of the first screw rods in each of the injection molding cavities; adjacent to the injection molding cavities A second connection gear is arranged between the inner second screw rods, and the second connection gear meshes with the second rotating gear, so that the second screw rods in each of the injection molding cavities can rotate synchronously.

Through the above technical solutions, the beneficial effects of the technical solutions of the present invention are as follows: the structure of the present invention is simple and reasonable, and the structure of tapping at both ends can effectively avoid the occurrence of burrs at the joint of the parting mold, improve the quality of the product, and at the same time the male mold In the process of opening the mold with the mother mold, the first screw rod is driven by the first servo motor to rotate and exit, and the first stroke control gear is used to realize the control of the first servo motor. The control precision is high, and the coordination is good. Quick demoulding improves production efficiency.

Description of drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are just some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

Figure 1 is a schematic diagram of the structure of the adjusting nut.

FIG. 2 is a schematic structural diagram of injection molding of an adjusting nut by an injection mold in the prior art.

3 is a schematic diagram of a cross-sectional structure of the present invention.

FIG. 4 is a schematic diagram of the three-dimensional structure of the present invention.

5 is a schematic diagram of a partial structure of the present invention.

Corresponding part names represented by numbers and letters in the figure:

1. Upper fixing plate 2. The first screw rod 3. The first servo motor

4. Second screw rod 5. Second servo motor 6. First drive gear

7. The first stroke control gear 8. The first touch slider 9. The first rotation gear

10. The first connecting gear 11. The positioning pin.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Example

3 , 4 and 5 , the utility model discloses a screw stroke control two-end tapping injection mold for adjusting the nut injection molding, including a male mold and a female mold that cooperate with each other. A cavity slider is movably arranged on the male mold, and an injection molding cavity is arranged on the cavity slider. A first screw rod 2 is provided on the female mold; a second screw rod 4 is provided on the male mold. The first screw rod 2 and the second screw rod 4 respectively extend into the injection mold cavity from both ends of the injection mold cavity. Through the first threaded rod 2 and the second threaded rod 4, the double-ended tapping of the adjusting nut product is realized.

Specifically, a first rotating gear 9 is sleeved at the tail end of the first screw rod 2 , and the first screw rod 2 rotates synchronously with the first rotating gear 9 . A first servo motor 3 is arranged on the master mold, and a first driving gear 6 is sleeved and mounted on the drive shaft of the first servo motor 3 . The first drive gear 6 is connected with the first rotation gear 9 through the first stroke control gear 7, and the first stroke control gear 7 meshes with the first drive gear 6 and the first rotation gear 9 respectively, so The first servo motor 3 drives the first screw rod 2 to rotate. A first helical groove is provided on the gear disk surface of the first stroke control gear 7 , and the first helical groove is spirally arranged from the inner side to the outer side of the gear disk surface of the first stroke control gear 7 . A first touch slider 8 is disposed on one side of the first stroke control gear 7 . The first touch slider 8 is movably arranged along the radial direction of the first stroke control gear 7 , and one end of the first touch slider 8 is provided with a first engagement bump. The first engaging bump is clamped in the first helical groove. When the first stroke control gear 7 rotates, the first touch slider 8 moves along the first stroke control gear 7 . For radial movement, a first touch switch is provided on the movement path of the first touch slider 8 , and the first touch switch controls the start and stop of the first servo motor 3 . The second screw rod 4 located at the other end of the first screw rod 2 adopts the same rotation and withdrawal method as the first screw rod 2 . A second rotating gear is sleeved at the end of the second screw rod 4, and the second screw rod 4 rotates synchronously with the second rotating gear. A second servo motor 5 is arranged on the male mold, and a second driving gear is sleeved and mounted on the driving shaft of the second servo motor 5 . The second drive gear is connected to the second rotation gear through a second stroke control gear, the second stroke control gear is meshed with the second drive gear and the second rotation gear respectively, and the second servo motor 5 The second screw rod 4 is driven to rotate. A second helical groove is provided on the gear disk surface of the second stroke control gear, and the second helical groove is spirally arranged from the inner side to the outer side of the gear disk surface of the second stroke control gear. A second touch slider is arranged on one side of the second stroke control gear. The second touch slider is movably arranged along the radial direction of the second stroke control gear, and a second engaging convex point is arranged at one end of the second touch slider. The second engaging bump is clamped in the second helical groove, and when the second stroke control gear rotates, the second touch slider moves along the radial direction of the second stroke control gear , a second touch switch is arranged on the movement path of the second touch slider, and the second touch switch controls the start and stop of the second servo motor 5 .

In order to confirm the positioning of the first rotating gear 9 in the mold clamping state and ensure the stability of the guide of the first screw rod 2 and the second screw rod 4, an upper fixing plate 1 is provided on the female mold; A positioning pin 11 is provided on the upper fixing plate 1 ; a positioning hole matched with the positioning pin 11 is provided on the gear disk surface of the first rotating gear 9 .

In order to improve the production efficiency of the present invention, the number of the injection molding cavity is more than one. Further, one of the first screw rods 2 and one of the second screw rods 4 are correspondingly disposed in each injection molding cavity. A first connecting gear 10 is arranged between the first screw rods 2 in the adjacent injection molding cavities, and the first connecting gear 10 is meshed with the first rotating gear 9, so that the inner The first screw rod 2 rotates synchronously. A second connecting gear is arranged between the second screw rods 4 in the adjacent injection molding cavities, and the second connecting gear meshes with the second rotating gear to realize the second connecting gear in each of the injection molding cavities. The screw rod 4 rotates synchronously.

The working process of the utility model is as follows: when the male mold and the female mold are in the mold clamping state, the injection molding process of the adjusting nut is performed. When the injection molding is completed, the upper fixing plate 1 drives the positioning pins 11 to retreat and disengage from the positioning holes, and the first servo motor 3 drives the first driving gear 6, the first stroke control gear 7, the first rotating gear 9 and the first The connecting gear 10 rotates synchronously, and rotates until the first screw rod 2 comes out of the product. At this time, the first touch slider 8 touches the first touch switch, and the first touch switch controls the first servo motor 3 to shut down Then the male mold is opened, and the second servo motor 5 drives the second driving gear, the second stroke control gear, the second rotating gear and the second connecting gear to rotate synchronously after the male mold and the female mold are disengaged. The rod 4 is separated from the adjusting nut product. At this time, the second touch slider touches the second touch switch, and the second touch switch controls the second servo motor 5 to shut down; the second screw rod 4 is separated from the product and adjusts the nut at the same time. The product can be taken out of the injection mold.

Through the above-mentioned specific embodiments, the beneficial effects of the present utility model are: the utility model has a simple and reasonable structure, and adopts the structure of tapping at both ends, which can effectively avoid the occurrence of burrs at the joint of the split mold, and improve the quality of the product. During the mold opening process of the master mold, the first screw rod 2 is driven by the first servo motor 3 to rotate and exit, and the first stroke control gear 7 is used to realize the control of the first servo motor 3. The control precision is high and the coordination is good. The product can be quickly demolded and the production efficiency can be improved.

The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (5)

1. a kind of flight controls both ends tapping injection mold, including mutually matched male model and master mold, on the male model It is movably set with cavity slide block, is provided with injection die cavities on the cavity slide block；It is characterized in that, being arranged on the master mold There is the first thread bar；The second thread bar is provided on the male model；The first thread bar and the second thread bar are respectively from institute The both ends for stating injection die cavities are protruded into the injection die cavities；The first rotate gear, institute are arranged in the first thread bar tail end It states the first thread bar and first rotate gear rotates synchronously；It is provided with first servo motor on the master mold, described It is arranged in the drive shaft of one servo motor and the first driving gear is installed；The first driving gear controls tooth by first stroke Wheel is connect with first rotate gear, and the first stroke control gear is rotated with the first driving gear and first respectively Gear engagement, the first servo motor drive the first thread bar rotation；In the gear of first stroke control gear Be provided with the first helicla flute in disk, first helicla flute from the interior side of the gear disk of first stroke control gear to Outer helical is around setting；The side of first stroke control gear is provided with the first touch-control sliding block；First touch-control Sliding block is provided with the first card in one end of the first touch-control sliding block along the radially movable setting of first stroke control gear Close salient point；The first engaging salient point is arranged in first helicla flute, when the first stroke control gear is rotated, The first touch-control sliding block controls the radial motion of gear along the first stroke, in the motion path of the first touch-control sliding block On be provided with the first touch switch, first touch switch controls the starting of the first servo motor and shuts down.

2. flight according to claim 1 controls both ends tapping injection mold, which is characterized in that in second spiral shell Tooth bar tail end is arranged with the second rotate gear, and the second thread bar and second rotate gear rotate synchronously；In the public affairs It is provided with the second servo motor on mould, is arranged in the drive shaft of second servo motor and the second driving gear is installed；It is described Second driving gear controls gear by second stroke and connect with second rotate gear, the second stroke control gear point It is not engaged with the second driving gear and the second rotate gear, second servo motor drives the second thread bar to turn It is dynamic；The second helicla flute is provided in the gear disk of second stroke control gear, and second helicla flute is from described the Two strokes control the Inside To Outside spiral surrounding setting of the gear disk of gear；In the side of second stroke control gear It is provided with the second touch-control sliding block；The second touch-control sliding block controls the radially movable setting of gear along the second stroke, in institute The one end for stating the second touch-control sliding block is provided with the second engaging salient point；The second engaging salient point is arranged in second helicla flute It is interior, when the second stroke control gear is rotated, diameter of the second touch-control sliding block along second stroke control gear To movement, the second touch switch, the second touch switch control are provided on the motion path of the second touch-control sliding block It the starting of second servo motor and shuts down.

3. flight according to claim 2 controls both ends tapping injection mold, which is characterized in that on the master mold It is provided with upper mounted plate；Positioning pin is provided on fixed plate；It is set in the gear disk of first rotate gear It is equipped with the location hole with the detent fit.

4. flight according to claim 3 controls both ends tapping injection mold, which is characterized in that the injection die cavities For more than one.

5. flight according to claim 4 controls both ends tapping injection mold, which is characterized in that each injection die cavities Inside it is correspondingly arranged on the first thread bar and the second thread bar；The first spiral shell in the adjacent injection die cavities The first connection gear is provided between tooth bar, first connection gear is engaged with first rotate gear, realizes each institute The the first thread bar stated in injection die cavities synchronizes rotation；It is provided between the second thread bar in the adjacent injection die cavities Second connection gear, second connection gear are engaged with second rotate gear, are realized in each injection die cavities Second thread bar synchronizes rotation.