CN213321361U

CN213321361U - Combined type check needle and feeding check device of injection molding machine

Info

Publication number: CN213321361U
Application number: CN202021266658.4U
Authority: CN
Inventors: 张永林; 陈文菁; 刘泽
Original assignee: Dongguan Zhihao Photoelectric Technology Co ltd
Current assignee: Dongguan Zhihao Photoelectric Technology Co ltd
Priority date: 2020-07-01
Filing date: 2020-07-01
Publication date: 2021-06-01
Anticipated expiration: 2030-07-01

Abstract

The utility model relates to a mechanical device technical field especially relates to a modular contrary needle of ending and contrary device that ends of feed of board of moulding plastics. The combined type non-return needle comprises a non-return needle head and a non-return needle main body which are detachably connected, when the non-return needle head is worn and needs to be replaced, only the non-return needle head needs to be replaced, the whole non-return needle does not need to be replaced, and the production cost is reduced; the utility model discloses an among the contrary device, contrary needle and contrary seat closure are contrary to ending, and the second portion of contrary syringe needle that ends corresponds the cooperation with the second round platform chamber of contrary seat that ends, and first round platform chamber is the same for the skew angle of center pin with the second portion for the skew angle of center pin, has increased the area of contact of contrary syringe needle and contrary seat that ends, is favorable to slowing down the wearing and tearing speed of contrary syringe needle that ends, increases the life of contrary syringe needle that ends.

Description

Combined type check needle and feeding check device of injection molding machine

Technical Field

The utility model relates to a mechanical device technical field especially relates to a modular contrary needle of ending and contrary device that ends of feed of board of moulding plastics.

Background

Under the action of a feeding system of the injection molding machine, the SMC plastic material is separated from the check needle and the check seat, a material storage channel is formed between the SMC plastic material and the check seat, and the SMC plastic material is stored in the material pipe; when the storage is finished and injection molding is carried out, the reverse stop needle moves downwards to be tightly ejected with the reverse stop seat to close and cut off the storage path, so that the situation that glue flows out reversely due to the rising of the filling pressure is prevented, and the injection force of the injection molding machine can be completely delivered to the mold cavity without pressure relief.

The needle head of the check needle is frequently in abutting contact with the check seat, so that the needle head of the check needle is high in abrasion speed and short in service life, the abraded check needle is poor in sealing effect when being matched with the check seat, the worn check needle needs to be frequently replaced, and the production cost is increased.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model provides a contrary device that ends of feed of modular contrary needle and the board of moulding plastics solves among the prior art frequently to change the high and poor technical problem of contrary needle wearability of manufacturing cost that contrary needle leads to that ends.

The utility model provides a modular contrary needle that ends, include:

the non-return needle head comprises a head part and a connecting rod which are matched with each other, the head part comprises a first end and a second end which are arranged oppositely, the diameter of the head part is gradually increased from the first end to the second end, the connecting rod is arranged at the second end of the head part, the head part comprises a first part connected with the connecting rod and a second part which is connected with the first part and is conical, and a groove which extends from the side wall of the connecting rod to the central shaft direction of the non-return needle head is arranged on the connecting rod;

the non-return needle body is matched with the connecting rod, is columnar and comprises a first accommodating cavity which extends from one side of the non-return needle body close to the head part to the direction close to the central shaft and is used for accommodating the connecting rod and a fixing hole which extends from the side wall of the non-return needle body to the first accommodating cavity and is arranged corresponding to the groove; and

and the fixing piece is matched with the fixing hole and the groove, penetrates through the fixing hole, extends into the groove and fixes the connecting rod in the first accommodating cavity.

Preferably, the diameter of the non-return needle body is the same as the diameter of the second end of the head.

Preferably, the first portion comprises a cylindrical section connected to the connecting rod and a frustoconical section connected to the second portion, the frustoconical section having a different angle of deflection relative to the central axis than the second portion.

Preferably, the bottom of the groove is parallel to the middle axial plane of the connecting rod, and the bottom of the groove is rectangular.

Preferably, a projection of the fixing hole in a direction perpendicular to the bottom of the groove falls entirely into the bottom of the groove.

Preferably, the fixing hole is a threaded hole with a first thread on the inner wall, and the fixing piece is a threaded piece with a second thread on the outer wall, wherein the second thread is matched with the first thread.

Preferably, the contrary syringe needle that ends with the contrary needle main part is made by different materials respectively, the wearability and the hardness of contrary syringe needle that ends all are greater than the contrary needle main part that ends.

The utility model also provides a contrary device of ending of feed of board of moulding plastics, include:

the combined type non-return needle is provided; and

with contrary seat of ending of combination formula contrary needle complex, contrary seat of ending has the chamber of lining up that the axial link up, link up the chamber include with contrary syringe needle complex first cavity and the second cavity of being connected with first cavity, first cavity is followed to keeping away from a lateral approach of second cavity one side diameter of second cavity reduces gradually, first cavity include with first round platform chamber of second cavity connection and with the second round platform chamber of first round platform chamber connection, first round platform chamber with the second portion of contrary syringe needle of ending corresponds the setting, first round platform chamber for the skew angle of center pin with the second portion for the skew angle of center pin is the same.

Preferably, the first cavity further comprises a cylindrical cavity connected with the second truncated cone cavity.

Preferably, contrary device that ends still include with the sleeve that is the cavity form that contrary seat is connected, the sleeve encircles contrary needle and with the contrary needle interval setting of contrary of combination formula is contrary, the sleeve with the lateral wall butt joint of cylindricality chamber.

The utility model has the advantages that the combined type check needle comprises a check needle head and a check needle main body which are detachably connected, when the check needle head is worn and needs to be replaced, only the check needle head needs to be replaced, the whole check needle does not need to be replaced, and the production cost is reduced; the utility model discloses an among the contrary device, contrary needle and contrary seat closure are contrary to ending, and the second portion of contrary syringe needle that ends corresponds the cooperation with the second round platform chamber of contrary seat that ends, and first round platform chamber is the same for the skew angle of center pin with the second portion for the skew angle of center pin, has increased the area of contact of contrary syringe needle and contrary seat that ends, is favorable to slowing down the wearing and tearing speed of contrary syringe needle that ends, increases the life of contrary syringe needle that ends.

Drawings

FIG. 1 is a perspective view of the combined check needle of the present invention;

FIG. 2 is an exploded perspective view of the combination check needle shown in FIG. 1;

FIG. 3 is a sectional view taken along line A-A of the combination check needle of FIG. 1;

FIG. 4 is an exploded view of the assembled check needle of FIG. 1 taken along the line A-A;

fig. 5 is a perspective view of a feeding check device of the injection molding machine of the present invention;

FIG. 6 is an exploded view of the feed check device of the injection molding machine of FIG. 5;

FIG. 7 is a diagram illustrating a closed state of a check needle and a check seat in the feeding check device of the injection molding machine shown in FIG. 5;

FIG. 8 is an enlarged view of FIG. 7 at B;

fig. 9 is a perspective view of a feeding check device of an injection molding machine according to a preferred embodiment of the present invention.

The meaning of the reference symbols in the drawings is:

100-combined type non-return needle; 1-non-return needle head; 10-a central axis; 11-a head; 11 a-a first end; 11b a second end; 111-a first portion; 1111-cylindrical section; 1112-a circular table segment; 112-a second portion; 12-a connecting rod; 121-grooves; 1211-bottom; 2-a non-return needle body; 21-a first containing cavity; 22-a fixation hole; 3-a fixing piece; 200-a check seat; 4-through cavity; 41-a first cavity; 411-a first circular table cavity; 412-a second circular truncated cone cavity; 413-cylindrical cavity; 300-sleeve.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

As shown in fig. 1 to 4, it is a combined check needle according to an embodiment of the present invention.

As shown in fig. 1 and 2, this combined type inverted needle 100 includes an inverted needle head 1 and an inverted needle body 2, wherein the inverted needle head 1 includes a head 11 and a connecting rod 12 that are matched with each other, the head 11 includes a first end 11a and a second end 11b that are arranged oppositely, the diameter of the head 11 increases gradually from the first end 11a to the second end 11b, the connecting rod 12 is disposed at the second end 11b of the head, the head 11 includes a first portion 111 connected with the connecting rod 12 and a second portion 112 connected with the first portion 111 and having a conical shape, and the connecting rod 12 is provided with a groove 121 that extends from the side wall of the connecting rod 12 to the direction of the central shaft 10 that is close to the inverted needle head 11. In this embodiment, the central axis 10 of the check needle 11 is also the central axis of the check needle body 12 in this embodiment and the central axes of the check seat 200 and the sleeve 300 in the next embodiment.

Contrary needle body 2 is the column, and contrary needle body 1 inserts through connecting rod 12 and locates the equipment of contrary needle body 1 and contrary needle body 2 of realizing contrary needle body 2 of ending in contrary needle body 2, specifically, contrary needle body 2 of ending includes the follow contrary needle body 2 is close to one side of head 11 begins to follow the first chamber 21 and the follow that holds that the center pin 10 direction extends the lateral wall of contrary needle body 2 to first hold chamber 21 extend and with the recess 121 corresponds the fixed orifices 22 that sets up, first chamber 21 that holds is used for holding connecting rod 12, fixed orifices 22 and the first chamber 21 intercommunication that holds, when connecting rod 12 card was located first chamber 21 that holds, the recess 121 that is located on it was towards fixed orifices 22, fixed orifices 22 and recess 121 intercommunication.

The combined type non-return needle 100 of this embodiment further includes a fixing member 3 engaged with the fixing hole 22 and the groove 121, the fixing member 3 penetrates through the fixing hole 22 and extends into the groove 121, and the fixing member 3 abuts against the bottom of the groove 121 to fix the connecting rod 12 in the first accommodating cavity 21.

In this embodiment, contrary syringe needle 11 that ends that easily abrades and contrary needle main part 12 that does not easily abrade adopt detachable the connection, need not to change simultaneously, can adapt to respective change frequency, when contrary syringe needle 11 that ends takes place wearing and tearing and contrary needle main part 12 that ends does not take place wearing and tearing, only need change contrary syringe needle 11 that ends can, reduced manufacturing cost. And, because the wear resistance demand of contrary syringe needle 11 and contrary needle main part 12 of ending is different, contrary syringe needle 11 of ending with contrary needle main part 12 can be made by different materials respectively, the wearability and the hardness of contrary syringe needle 11 of ending all are greater than contrary needle main part 12 of ending, for example, contrary syringe needle 11 of ending can be made by the bearing steel material, is favorable to further effectively promoting life, reduces the production loss.

In an alternative embodiment, the diameter of the back-up needle body 12 is the same as the diameter of the second end 11b of the head 11. The first portion 111 comprises a cylindrical section 1111 connected to the connecting rod 12 and a truncated cone section 1112 connected to the second portion 112, and the angle of inclination of the truncated cone section 1112 with respect to the central axis 10 is smaller than the angle of inclination of the second portion 112 with respect to the central axis 10, which is beneficial to reducing interference with a non-return seat.

In an alternative embodiment, the bottom 1211 of the groove 121 is parallel to the central axis of the connecting rod 12, the bottom 1211 of the groove 121 is rectangular, and the projection of the fixing hole 22 along the direction perpendicular to the bottom 1211 of the groove 121 completely falls into the bottom 1211 of the groove 121, so that when the inverted needle head 1 and the inverted needle body 2 are assembled, the groove 121 and the fixing hole 22 are more easily aligned, and damage to the surface of the connecting rod 12 caused by incomplete alignment of the groove 121 and the fixing hole 22 after the fixing member 3 passes through the fixing hole 22 is avoided. Further, the fixing hole 22 is a threaded hole with a first thread on the inner wall, the fixing member 3 is a threaded member with a second thread on the outer wall, the second thread is matched with the first thread, and the fixing member 3 and the fixing hole 22 are in threaded fit to lock the connecting rod 12 in the first accommodating cavity 21.

As shown in fig. 5 to 9, it is a feeding check device of an injection molding machine according to an embodiment of the present invention.

The feeding check device of the injection molding machine comprises a combined check needle 100 and a check seat 200, and the structure of the combined check needle 100 is described in the previous embodiment and is not described herein.

The reverse stopping seat 200 is provided with a through cavity 4 which is axially communicated, the through cavity 4 comprises a first cavity 41 matched with the reverse stopping needle 11 and a second cavity 42 connected with the first cavity 41, the diameter of the first cavity 41 is gradually reduced from one side far away from the second cavity 42 to one side close to the second cavity 42, the first cavity 41 comprises a first circular platform cavity 411 connected with the second cavity 42, a second circular platform cavity 412 connected with the first circular platform cavity 411 and a cylindrical cavity 413 connected with the second circular platform cavity 412, the first circular platform cavity 411 is arranged corresponding to the second part 112 of the reverse stopping needle 11, the second part 112 is conical, the inclined angle of the first circular platform cavity 411 relative to the central shaft 10 is the same as the inclined angle of the second part 112 relative to the central shaft 10, and the contact area of the reverse stopping needle 11 and the reverse stopping seat 200 is increased, the stress area on the non-return needle head 11 is enlarged, the abrasion speed of the non-return needle head 11 is favorably slowed down, and the service life of the non-return needle head 11 is prolonged. In addition, the offset angle of the second truncated cone cavity 412 relative to the central axis 10 is larger than the offset angle of the first truncated cone cavity 411 relative to the central axis 10, so that the mutual interference between the second truncated cone cavity 412 and the first part 111 is reduced, and the check needle 100 and the check seat 200 are easier to open or close.

Further, as shown in fig. 9, the check device further includes a hollow sleeve 300 connected to the check seat 200, the sleeve 300 surrounds the combined check needle 100 and is spaced apart from the combined check needle 100, and the sleeve 300 is abutted to a side wall of the cylindrical cavity 413.

In this embodiment, one end of the sleeve 300, which is far away from the check seat 200, is connected with a feeding system of an injection molding machine, one end of the check seat 200, which is far away from the sleeve 300, is connected with a material pipe of the injection molding machine, and when the check needle 100 and the check seat 200 are opened, SMC plastic materials in the feeding system sequentially pass through the hollow cavity of the sleeve 300, a channel formed between the check needle 100 and the check seat 200, and the second cavity 42 of the check seat 200, and enter the material pipe, so that material storage is realized; when injection molding and filling are carried out after the material storage is finished, the check needle 100 and the check seat 200 are abutted to close and cut off the material storage path.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only represent preferred embodiments of the present invention, which are described in more detail and detail, but are not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a modular contrary needle that ends, its characterized in that, modular contrary needle that ends includes:

2. The combination check needle of claim 1, wherein a diameter of the check needle body is the same as a diameter of the head second end.

3. The combined backstop needle of claim 2 wherein the first portion comprises a cylindrical section connected to the connecting rod and a frustoconical section connected to the second portion, the frustoconical section having a different angle of deflection relative to the central axis than the second portion.

4. The combined type non-return needle as claimed in claim 1, wherein the bottom of the groove is parallel to the middle axial plane of the connecting rod, and the bottom of the groove is rectangular.

5. The combined backstop needle of claim 4 wherein a projection of the securing hole in a direction perpendicular to the bottom of the groove falls completely into the bottom of the groove.

6. The combined type non-return needle as claimed in claim 5, wherein the fixing hole is a threaded hole having a first thread on an inner wall thereof, and the fixing member is a threaded member having a second thread on an outer wall thereof, the second thread being matched with the first thread.

7. The combined reverse stop needle of claim 1, wherein the reverse stop needle head and the reverse stop needle body are made of different materials, and both the abrasion resistance and the hardness of the reverse stop needle head are greater than those of the reverse stop needle body.

8. The utility model provides a contrary device that ends of feed of board moulds plastics, a serial communication port, contrary device that ends includes:

the combined backstop needle of any one of claims 1-7; and

9. The material supply check device of the injection molding machine according to claim 8, wherein the first cavity further comprises a cylindrical cavity connected to the second circular truncated cone cavity.

10. The feeding check device of an injection molding machine according to claim 9, further comprising a hollow sleeve connected to the check seat, wherein the sleeve surrounds the combined check needle and is spaced from the combined check needle, and the sleeve is butted against the side wall of the cylindrical cavity.