CN214184762U

CN214184762U - Structure for pipe bending mold blank

Info

Publication number: CN214184762U
Application number: CN202023189209.7U
Authority: CN
Inventors: 唐健飞
Original assignee: Dongguan Mly Mould Steels Co ltd
Current assignee: Dongguan Mly Mould Steels Co ltd
Priority date: 2020-12-26
Filing date: 2020-12-26
Publication date: 2021-09-14
Anticipated expiration: 2030-12-26

Abstract

The utility model discloses a structure for return bend mould embryo, including first mould and second mould, first mould is equipped with the shaping cavity, the shaping cavity is used for the shaping return bend, the both ends of shaping cavity are equipped with first opening and second opening respectively, the one end of shaping cavity is equipped with slidable mounting's first end cap, the second mould includes the second end cap and locates the core strip of second end cap front end, the second mould is equipped with the second drive arrangement that drives the second end cap and remove, when first mould and second mould compound die, the second drive arrangement can drive the second end cap and seal the second opening, simultaneously the core strip stretches into in the shaping cavity. The one-step forming of the bent pipe is realized through the arrangement of the first plug, the second plug and the core strip, the bent pipe is convenient and fast to take out, and the production efficiency and the product percent of pass are effectively improved.

Description

Structure for pipe bending mold blank

Technical Field

The utility model relates to a mould field, in particular to a structure for return bend mould embryo.

Background

The mould is various moulds and tools for obtaining required products by injection molding, blow molding, extrusion, die casting or forging forming, smelting, stamping and other methods in industrial production. In short, a mold is a tool used to make a shaped article, the tool being made up of various parts, different molds being made up of different parts. The processing of the appearance of an article is realized mainly through the change of the physical state of a formed material. The mold generally comprises an upper mold blank and a lower mold blank, wherein a first groove and a second groove are respectively arranged between the upper mold blank and the lower mold blank, so as to form corresponding objects.

In the existing automobile parts, bent pipe-shaped objects are often used, but the existing bent pipe mould blank generally needs to be cast through a plurality of processes, namely, an outer blank is firstly formed, an inner blank is then formed, and then the inner blank forms a corresponding core hole. However, in actual processing, if the curvature of the bent pipe is more, the yield of the conventional bent pipe die blank is greatly reduced. Although some existing bend pipe mold blanks with the loose cores have the problem of unsmooth bending process.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a structure for return bend mould embryo, aim at making return bend mould embryo can the corresponding return bend spare of one shot forming, and conveniently looses core, and the product percent of pass is higher.

In order to achieve the above object, the utility model provides a structure for return bend mould embryo, include:

the first mould is provided with a forming cavity, the forming cavity is used for forming a bent pipe, a first opening and a second opening are respectively formed in two ends of the forming cavity, a first plug which is installed in a sliding mode is arranged at one end of the forming cavity, and a first driving device for driving the plug to move between a position for closing the first opening and a position for opening the first opening is arranged on the first mould;

and the second mould comprises a second plug and a core strip arranged at the front end of the second plug, the second mould is provided with a second driving device for driving the second plug to move, when the first mould and the second mould are closed, the second driving device can drive the second plug to close the second opening, and meanwhile, the core strip extends into the forming cavity.

Preferably, the molding cavity is a pipe body with a through groove in the middle, and the pipe body is curved.

Preferably, the first die is provided with a plurality of guide sleeves arranged at intervals, and the second die is provided with guide columns matched with the guide sleeves.

Preferably, the end face of the second mold opposite to the molding cavity is provided with an inward concave accommodating groove, and the wall surface of the accommodating groove is in an inclined plane shape.

Preferably, the first mold is provided with a positioning block extending upwards, the second mold is provided with a positioning groove matched with the positioning block, and the positioning block is wedge-shaped.

Preferably, first mould is equipped with bent shape guide rail, bent shape guide rail slidable mounting has the sliding block, first end cap is installed on the sliding block, first end cap can slide along bent shape guide rail's length direction.

Preferably, the first driving device and the second driving device are both telescopic motors or telescopic cylinders.

Preferably, a connecting piece is arranged between the second driving device and the second plug, and two ends of the connecting piece are respectively and pivotally mounted at the rear end of the second plug and the driving end of the second driving device.

Preferably, the first plug and the second plug are both curved.

Preferably, the first mould is provided with a bayonet lock which is installed in a sliding mode, the second plug is provided with a clamping hole matched with the bayonet lock, and when the second opening is closed by the second plug, the bayonet lock can be clamped into the clamping hole.

The technical scheme of the utility model is that a first plug and a second plug are respectively arranged at a first opening and a second opening of a molding cavity, when the mold is closed, the first plug and the second plug seal two ends of the molding cavity, meanwhile, a core strip is positioned at the middle part of the molding cavity, fluid is injected through an injection molding port, and after a product is molded, the second plug and the core strip are firstly moved towards the position far away from the second opening (namely, the core strip is drawn out); then opening the second mold; then the first plug moves towards the position far away from the first opening, and the bent pipe of the molding cavity is taken out through a corresponding tool or manually. The one-step forming of the bent pipe is realized through the arrangement of the first plug, the second plug and the core strip, the bent pipe is convenient and fast to take out, and the production efficiency and the product percent of pass are effectively improved.

Drawings

FIG. 1 is a schematic view of the mold closing state of the present invention;

FIG. 2 is a schematic view of the first mold and the second mold mated (exploded state);

FIG. 3 is a perspective view of the first and second molds after concealing portions of the components;

fig. 4 is a schematic diagram of the first plug, the second plug and the molding cavity.

In the drawing, 1 is a first mold, 11 is a first plug, 12 is a first driving device, 2 is a second mold, 20 is a core bar, 21 is a second plug, 22 is a second driving device, 23 is a receiving groove, 3 is a molding cavity, 31 is a first opening, 32 is a second opening, 41 is a positioning block, 42 is a positioning groove, 51 is a curved guide rail, 52 is a sliding block, 6 is a connecting piece, 71 is a bayonet lock, 72 is a clamping hole, 81 is a guide post, and 82 is a guide sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indicators (such as … …, upper, lower, left, right, front, back, top, bottom, inner, outer, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial) are involved in the embodiments of the present invention, the directional indicators are only used to explain the relative position, motion, etc. of the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicators are changed accordingly.

In addition, if there is a description relating to "first" or "second", etc. in the embodiments of the present invention, the description of "first" or "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

As shown in fig. 1 to 4, a structure for a pipe bending mold blank includes:

the first mold 1 is provided with a molding cavity 3, the molding cavity 3 is used for molding a bent pipe, two ends of the molding cavity 3 are respectively provided with a first opening 31 and a second opening 32, one end of the molding cavity 3 is provided with a first plug 11 which is installed in a sliding mode, and the first mold 1 is provided with a first driving device 12 which drives the plug to move between a position where the first opening 31 is closed and a position where the first opening 31 is opened;

the second mold 2 comprises a second plug 21 and a core strip 20 arranged on the second plug 21, the second mold 2 is provided with a second driving device 22 for driving the second plug 21 to move, when the first mold 1 and the second mold 2 are closed, the second driving device 22 can drive the second plug 21 to close the second opening 32, and meanwhile, the core strip 20 extends into the molding cavity 3.

Arranging a first plug 11 and a second plug 21 on a first opening 31 and a second opening 32 of a forming cavity 3 respectively, sealing two ends of the forming cavity 3 by the first plug 11 and the second plug 21 when the die is closed, simultaneously positioning a core strip 20 in the middle of the forming cavity 3, injecting fluid through an injection molding opening, and after a product is formed, firstly moving the second plug 21 and the core strip 20 to a position far away from the second opening 32 (namely, drawing out the core strip 20); then the second mould 2 is opened; then the first plug 11 moves towards the position far away from the first opening 31, and the bent pipe of the molding cavity 3 is taken out by a corresponding tool or a manual work. The one-step forming of the bent pipe is realized through the arrangement of the first plug 11, the second plug 21 and the core strip 20, the bent pipe is convenient and fast to take out, and the production efficiency and the product percent of pass are effectively improved.

In the embodiment of the present invention, the forming cavity 3 has a pipe body with a through groove in the middle, the pipe body is curved, i.e. a corresponding bent pipe is formed, wherein the bent pipe can be a multi-dimensional bent pipe or a single-curvature bent pipe.

The embodiment of the utility model provides an in, first mould 1 is equipped with the uide bushing 82 that a plurality of intervals set up, second mould 2 is equipped with and leads 82 matched with guide post 81 with the uide bushing, and this is not different here for prior art and is repeated.

The embodiment of the utility model provides an in, the terminal surface that second mould 2 is relative with shaping cavity 3 is equipped with inside sunken holding tank 23, the wall of holding tank 23 is the inclined plane form. Generally, the bent tube is formed at the position of the receiving groove 23, and can be taken out when the second mold 2 is opened.

In the embodiment of the present invention, the first mold 1 is provided with a positioning block 41 extending upward, the second mold 2 is provided with a positioning groove 42 matched with the positioning block 41, and the positioning block 41 is wedge-shaped. The positioning grooves 42 and the positioning blocks 41 are matched to enable the first mold 1 and the second mold 2 to be combined more tightly, so that gaps are avoided, and in a specific embodiment, the positioning blocks 41 and the positioning grooves 42 can be arranged in a plurality to improve the positioning fit degree between the first mold 1 and the second mold 2.

In the embodiment of the present invention, the first mold 1 is provided with a curved guide rail 51, the curved guide rail 51 has a sliding block 52, the first plug 11 is installed on the sliding block 52, and the first plug 11 can slide along the length direction of the curved guide rail 51. Through the cooperation of the curved guide rail 51 and the sliding block 52, the sliding of the first plug 11 is smoother, and the first opening 31 can be closed more tightly.

In the embodiment of the present invention, the first driving device 12 and the second driving device 22 are both a telescopic motor or a telescopic cylinder, and certainly, the prior art can also be adopted, and the same technical effect can also be achieved.

In the embodiment of the present invention, a connecting member 6 is disposed between the second driving device 22 and the second plug 21, and both ends of the connecting member 6 are pivotally mounted at the rear end of the second plug 21 and the driving end of the second driving device 22 respectively. The core strip 20 can be more smoothly drawn out through the connecting piece 6, so that the phenomenon of jamming, namely a certain curvature in the actual running process, is avoided.

In the embodiment of the present invention, the first plug 11 and the second plug 21 are both curved. When the elbow has multiple curvatures, the first plug 11 and the second plug 21 can be formed in one step by setting the two plugs in curved shapes, and when only one end or one part of the elbow is in a curved shape, one end can also be set in a corresponding shape (such as a right cylinder).

In the embodiment of the present invention, the first mold 1 is provided with the slide-mounted bayonet 71, the second plug is provided with a bayonet-matched locking hole, and when the second plug 21 seals the second opening 32, the bayonet 71 can be locked into the locking hole 72. In a specific embodiment, the bayonet 71 can slide by a telescopic motor, or both ends of the bayonet 71 are set to be inclined planes, and the bayonet 71 can slide and be locked by the second plug 21, so that the second plug 21 can be prevented from being displaced due to the pressure of fluid during injection molding, and defects in molding can be avoided. In a specific embodiment, corresponding bayonet pins and bayonet holes can be arranged on the first die and the sliding block so as to avoid the displacement of the first plug.

The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.

Claims

1. A structure for a pipe bending mold blank, comprising:

2. The structure for a pipe bending mold as claimed in claim 1, wherein: the molding cavity is a pipe body with a through groove in the middle, and the pipe body is curved.

3. The structure for a pipe bending mold as claimed in claim 1, wherein: the first mould is provided with a plurality of guide sleeves arranged at intervals, and the second mould is provided with guide posts matched with the guide sleeves.

4. The structure for a pipe bending mold as claimed in claim 1, wherein: the end face, opposite to the forming cavity, of the second mold is provided with an inward concave accommodating groove, and the wall face of the accommodating groove is in an inclined plane shape.

5. The structure for a pipe bending mold as claimed in claim 1, wherein: the first mold is provided with a positioning block extending upwards, the second mold is provided with a positioning groove matched with the positioning block, and the positioning block is wedge-shaped.

6. The structure for a pipe bending mold as claimed in claim 1, wherein: first mould is equipped with bent shape guide rail, bent shape guide rail slidable mounting has the sliding block, first end cap is installed on the sliding block, first end cap can slide along bent shape guide rail's length direction.

7. The structure for a pipe bending mold as claimed in claim 1, wherein: the first driving device and the second driving device are both telescopic motors or telescopic cylinders.

8. The structure for a pipe bending mold as claimed in claim 1, wherein: and a connecting piece is arranged between the second driving device and the second plug, and two ends of the connecting piece are respectively pivotally mounted at the rear end of the second plug and the driving end of the second driving device.

9. The structure for a pipe bending mold as claimed in claim 1, wherein: the first plug and the second plug are both curved.

10. The structure for a pipe bending mold as claimed in claim 1, wherein: the first mould is provided with a clamping pin which is installed in a sliding mode, the second plug is provided with a clamping hole matched with the clamping pin, and when the second plug seals the second opening, the clamping pin can be clamped into the clamping hole.