CN210791757U

CN210791757U - Extrusion forming die with core-pulling mechanism

Info

Publication number: CN210791757U
Application number: CN201921432023.4U
Authority: CN
Inventors: 茹玉龙; 杨军; 吕凡磊
Original assignee: Guangzhou Zhongxin Auto Parts Co ltd
Current assignee: Guangzhou Zhongxin Auto Parts Co ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2020-06-19
Anticipated expiration: 2029-08-30

Abstract

The utility model relates to an extrusion forming die with a core-pulling mechanism, which comprises a first die cavity and a second die cavity which are matched with each other to form a product extrusion cavity, the core-pulling mechanism and a pulling plate, wherein the core-pulling mechanism is connected with the lower end of the first die cavity, and the pulling plate is connected with the lower end of the second die cavity; the core pulling mechanism comprises a sliding plate, a forming core pulling rod and a driving device, wherein the sliding plate is connected with the lower end of the first cavity in a sliding mode, and a first through hole for the forming core pulling rod to penetrate through is formed in the sliding plate; the driving device is connected to the lower end of the sliding plate through a fixing plate; one end of the forming core-pulling rod passes through the first through hole to be reserved on the upper surface of the sliding plate, and the other end of the forming core-pulling rod is connected with a piston rod of the driving device; the slide plate is buckled with the pulling plate. The use of the die can reduce one processing procedure and reduce the production cost; meanwhile, the core-pulling mechanism is connected to the cavities of the die, so that the core-pulling mechanism is always positioned between the two cavities during extrusion molding and does not move along with the movement of the die, and the die is convenient to mount on the machine.

Description

Extrusion forming die with core-pulling mechanism

Technical Field

The utility model belongs to the technical field of auto-parts processing, concretely relates to have the dimensional tolerance requirement or have the extrusion mould with mechanism of loosing core of product processing usefulness of leveling the requirement to the mouth of pipe inner wall of shaping product.

Background

At present, the processing of products with dimensional tolerance requirements on the inner wall of the pipe orifice of a molded product or flatness requirements on the inner wall surface adopts the following modes: one is through the mode of post-processing, namely carry on the boring process or drilling process to the inner wall of the pipe orifice after the product shaping, the disadvantage of this kind of preparation method is to add a post-processing procedure, take up a lot of spaces, manpower and materials take up a lot, the production cost is high; the other is directly formed on a machine table: a sliding block core pulling mechanism is manufactured, but the sliding block core pulling mechanism is fixed on a hollow forming machine table and not fixed on a mold, so that when the mold is installed on the machine table, a corresponding pipe orifice on the mold and the core pulling mechanism are matched and adjusted in relative position, the installation and adjustment time when the mold is installed on the machine table is increased, the precious time of a production machine table is occupied, and the production cost is invisibly increased. Namely: during hollow molding, the annular blank flows out from top to bottom, the blank can wrap a core-pulling round bar and then is extruded by the left cavity and the right cavity of the mold to form the inner wall and the outer wall of the pipe opening, so that the core-pulling mechanism is always arranged between the left mold and the right mold (the two cavities) and does not move along with the left-right movement of the molds, and the position of the core-pulling mechanism must be matched with the corresponding position on the molds, so that the core-pulling mechanism is fixed on a machine table and is time-consuming to install and debug.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an extrusion forming die with a core-pulling mechanism, which can reduce a post-processing procedure and production cost; meanwhile, the core-pulling mechanism is connected to the cavities of the die, so that the core-pulling mechanism is always positioned between the two cavities during extrusion molding and does not move along with the die, the installation and debugging time is saved, and the die is convenient to install and machine.

The technical scheme of the utility model is that: an extrusion forming die with a core pulling mechanism comprises a first die cavity and a second die cavity which are matched with each other to form a product extrusion cavity, and further comprises the core pulling mechanism connected with the lower end of the first die cavity and a pull plate connected with the lower end of the second die cavity and matched with the core pulling mechanism; the pulling plate is fixedly arranged at the lower end of the second cavity through a supporting plate;

the core pulling mechanism comprises a sliding plate, a forming core pulling rod and a driving device, wherein the sliding plate is connected with the lower end of the first cavity in a sliding manner; one end of the forming core-pulling rod penetrates through the sliding plate to be reserved on the upper surface of the sliding plate, and the other end of the forming core-pulling rod is connected with a piston rod of the driving device; a limiting block matched with the lower end of the first cavity is arranged on the lower surface of the sliding plate, and the limiting block is arranged at one end, close to the first cavity, of the sliding plate; the sliding plate is connected with the pulling plate in a buckling manner.

Furthermore, the lower end of the first cavity is fixedly connected with two groups of supporting plates which are symmetrically arranged, the lower end of each group of supporting plates is fixedly connected with a pressing strip, the supporting plates and the pressing strips are matched to form a slide way, the sliding plate is slidably connected with the slide way, two sides of opposite surfaces of the two pressing strips are provided with protruding portions matched with the limiting blocks, and the protruding portions and the limiting blocks are matched to play a limiting role so as to prevent the sliding plate from moving.

Furthermore, a limiting pin is vertically arranged at the joint of the other end of the molding core pulling rod and the piston rod of the driving device, a limiting through hole for the limiting pin to penetrate through is formed in the fixing plate, and the movable range of the driving device is limited through the matching of the limiting pin and the limiting through hole.

Furthermore, a lock catch hole is formed in the end face, close to the first cavity, of the pull plate, a lock catch matched with the lock catch hole is arranged on the end face, far away from the first cavity, of the end face of the sliding plate, and the lock catch hole and the lock catch are connected in a plug-in type locking mode. The first cavity and the second cavity are buckled together through the buckling of the lock catch and the lock catch hole.

Furthermore, the lock catch and the lock catch hole are at least two groups, so that the lock catch and the lock catch hole are firmly and stably buckled.

Furthermore, the driving device is an air cylinder or an oil cylinder, and the driving device is flexibly selected according to actual conditions.

Compared with the prior art, the utility model has the advantages of: the core-pulling mechanism is arranged at the lower end of the cavity of the mold, so that the core-pulling mechanism and the cavity can be matched to produce a hollow molded product meeting the requirement at one time, a post-processing procedure is reduced, and the production cost is reduced. Meanwhile, the core-pulling mechanism is arranged on the cavity, so that the core-pulling mechanism and the mold are integrated, and the mold is convenient to install on a machine table. In addition, the matching of the pulling plate and the sliding plate ensures that the core pulling mechanism is always positioned between the two cavities during extrusion molding and does not move along with the movement of the mold, thereby not only improving the processing precision, but also saving the debugging time for aligning the core pulling mechanism and the corresponding pipe orifice on the mold.

Drawings

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

Fig. 1 is an overall structure diagram of an extrusion molding mold with a core-pulling mechanism of the present invention;

FIG. 2 is a structural diagram of a first cavity with a core-pulling mechanism according to the present invention;

FIG. 3 is a structural diagram of a first cavity with a pulling plate according to the present invention;

FIG. 4 is a structural diagram of the core pulling mechanism of the present invention;

wherein, 1, blank; 2. a first cavity; 21. a support plate; 22. layering; 221. a boss portion; 241. a slide plate; 2411. locking; 2412. a limiting block; 242. forming the core drawing rod; 243. a drive device; 244. a fixing plate; 3-a second cavity; 31. pulling a plate; 32. a support plate; 311. a locking hole; 41. a spacing pin; 42. and limiting through holes.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Embodiments of the present invention will be described below with reference to the accompanying drawings:

as shown in fig. 1 to 4, an extrusion forming mold with a core-pulling mechanism comprises a first cavity 2 and a second cavity 3 which are matched with each other to form a product extrusion cavity, the extrusion forming mold further comprises the core-pulling mechanism connected with the lower end of the first cavity 2, and a pulling plate 31 connected with the lower end of the second cavity 3 and matched with the core-pulling mechanism; the pulling plate 31 is fixedly installed at the lower end of the second cavity 3 through the supporting plate 32, and a locking hole 311 is arranged on the side end face of the pulling plate 31 close to the first cavity 2.

Two sets of bearing plates 21 that are the symmetry and set up of lower extreme fixedly connected with of first die cavity 2, the equal fixedly connected with layering 22 of lower extreme of every group bearing plate 21, bearing plate 21 and layering 22 cooperation form the slide, and the both sides of the opposite face of two layering 22 all are provided with the bellying 221 with stopper 2412 complex.

The core-pulling mechanism comprises a sliding plate 241 connected with the slideway in a sliding way, a forming core-pulling rod 242 and a driving device 243, wherein the driving device 243 is connected to the lower end of the sliding plate 241 through a fixing plate 244; one end of the forming core rod 242 is retained on the upper surface of the sliding plate 241 through the sliding plate 241, and the other end of the forming core rod 242 is connected with the piston rod of the driving device 243; a limiting block 2412 matched with the convex part 221 on the pressing bar 22 is arranged on the lower surface of the sliding plate 241, and the limiting block 2412 is arranged at one end of the sliding plate 241 close to the first cavity 2; the end face of the end, far away from the first cavity 2, of the sliding plate 241 is provided with a lock catch 2411 matched with the lock catch hole 311, and the lock catch hole 311 and the lock catch 2411 are connected in a plug-in type buckling mode.

In the above embodiment, the stopper pin 41 is vertically provided at the joint between the other end of the molding drawing rod 242 and the piston rod of the driving device 243, the fixing plate 244 is provided with the stopper through hole 42 through which the stopper pin 41 passes, and the movable range of the driving device 243 is limited by the cooperation between the stopper pin 41 and the stopper through hole 42.

In the above embodiment, there are at least two sets of locking device 2411 and locking device hole 311 for more secure and stable locking of locking device 2411 and locking device 2411.

In the above embodiment, in order to flexibly select the driving device 243 according to actual conditions, the driving device 243 may be an air cylinder or an oil cylinder.

The utility model discloses a working method describes:

when the die is used, the die is arranged on a hollow forming machine table, the sliding plate 241 is pulled to enable the core pulling mechanism to be completely extended out, the blank 1 to be extruded and formed falls, and the end part of the blank 1 is naturally sleeved on the forming core pulling rod 242; then, the first cavity 2 and the second cavity 3 on the mold both move towards the middle to be closed, and meanwhile, the pulling plate 31 and the core-pulling mechanism both move along with the cavities, so that the lock catch 2411 is inserted into the lock catch hole 311 to be buckled; after buckling, when two cavities of the mold continue to move towards the middle for mold closing, the sliding plate 241 on the right side and the core pulling mechanism on the sliding plate 241 on the right side move towards the right under the pushing of the left pulling plate 31, and when the left and right cavities are closed in place, the core pulling mechanism and the sliding plate 241 restore to the middle position of the mold; after the product is formed, the forming core rod 242 is drawn downwards under the action of the driving device 243; when the mold is to be opened, the two cavities of the mold move left and right, and the sliding plate 241 drives the core-pulling mechanism to move left under the pulling of the pulling plate 31; further, when the stopper 2412 contacts the projection 221 on the bead 22, the bead 22 prevents the slide plate 241 from moving, the pulling plate 31 is separated from the slide plate 241, the core-pulling mechanism is pulled to the right side by the first cavity 2 of the mold along with the slide plate 241, the core-pulling mechanism is restored to the middle position of the mold, and further, the molding core-pulling rod 242 of the core-pulling mechanism is extended to wait for the next work cycle.

The beneficial effects of the utility model reside in that: the core-pulling mechanism is arranged at the lower end of the cavity of the mold, so that the core-pulling mechanism and the cavity can be matched to produce a hollow molded product meeting the requirement at one time, a post-processing procedure is reduced, and the production cost is reduced. Meanwhile, the core-pulling mechanism is arranged on the cavity, so that the core-pulling mechanism and the mold are integrated, and the mold is convenient to install on a machine table. In addition, through the matching of the pulling plate 31 and the sliding plate 241, the core-pulling mechanism is ensured to be always positioned between the two cavities during extrusion molding and not to move along with the movement of the mold, so that the processing precision is improved, and the debugging time for aligning the core-pulling mechanism and the corresponding pipe orifice on the mold is saved.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. An extrusion forming die with a core pulling mechanism comprises a first die cavity and a second die cavity which are matched with each other to form a product extrusion cavity, and is characterized by further comprising the core pulling mechanism connected with the lower end of the first die cavity and a pull plate connected with the lower end of the second die cavity and matched with the core pulling mechanism; the pulling plate is fixedly arranged at the lower end of the second cavity through a supporting plate;

2. The extrusion forming die with the core pulling mechanism is characterized in that the lower end of the first cavity is fixedly connected with two groups of symmetrically arranged supporting plates, the lower end of each group of supporting plates is fixedly connected with a pressing strip, the supporting plates and the pressing strips are matched to form a slide way, and the sliding plate is in sliding connection with the slide way; and two sides of the opposite surface of the two pressing strips are provided with protrusions matched with the limiting blocks.

3. The extrusion forming die with the core pulling mechanism as claimed in claim 1, wherein a limiting pin is vertically arranged at a joint of the other end of the forming core pulling rod and the piston rod of the driving device, and a limiting through hole for the limiting pin to pass through is arranged on the fixing plate.

4. The extrusion molding die with the core pulling mechanism as claimed in claim 1, wherein a lock catch hole is provided on the side end surface of the pulling plate close to the first cavity, a lock catch matched with the lock catch hole is provided on the end surface of the sliding plate far from the first cavity, and the lock catch hole and the lock catch are connected in a plug-in type buckling manner.

5. The extrusion mold with a core-pulling mechanism as recited in claim 4, wherein there are at least two sets of said locking catches and said locking catch holes.

6. The extrusion molding die with the core pulling mechanism as recited in claim 1, wherein the driving means is a cylinder or an oil cylinder.