CN214212170U

CN214212170U - Office chair backrest support die-casting die

Info

Publication number: CN214212170U
Application number: CN202023222401.1U
Authority: CN
Inventors: 何西华
Original assignee: Zhongshan Baolong Die Casting Mould Co ltd
Current assignee: Zhongshan Baolong Die Casting Mould Co ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-09-17
Anticipated expiration: 2030-12-28

Abstract

The utility model relates to the technical field of mold, and an office chair back support die casting die is disclosed, which comprises a fixed frame, the cylinder, go up mould and lower mould, the cylinder is fixed to be set up in the top of mount, it sets up in the piston rod end of cylinder to go up the mould is fixed, the lower mould is fixed to be set up in the bottom of mount, the inside of lower mould and the below that is located the mold core are equipped with the cavity, and the inside level of cavity is equipped with the movable plate, the last fixed surface of movable plate is equipped with four ejector beam that are the rectangle distribution and set up, the upper end of a plurality of ejector beam is all fixed and is equipped with the ejector beam, the liftout mouth that is used for a plurality of ejector beam to stretch into is offered to the mold core bottom of lower mould, the left and right sides of movable plate is all fixed and is equipped with the head rod, the left and right sides of going up the mould is all fixed and is equipped with the second connecting rod, connect the setting through connecting the rope between head rod and the second connecting rod. The utility model discloses can be automatically with the back support steady ejecting, avoid appearing the phenomenon that the back support warp, guarantee the quality of use of back support.

Description

Office chair backrest support die-casting die

Technical Field

The utility model relates to the technical field of mold, especially, relate to an office chair back support die casting die.

Background

As is well known, an office chair is an auxiliary device used for providing a seat for office workers during work and office work and facilitating the work of the office workers, and is widely used in the field of work and office work.

The backrest support is an important component of the office chair, the backrest support is generally prepared by adopting a die-casting die in production, the existing backrest support is inconvenient to take out from the die after being die-cast and formed due to the fact that the backrest support is in a four-frame shape, and if the backrest support is taken out by hands, the phenomenon of deformation of the backrest support is easy to occur, so that the use quality of the backrest support is influenced. Therefore, the utility model provides an office chair back support die casting die.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving among the prior art backrest support after the die-casting shaping, because backrest support is the frame shape, comparatively inconvenient problem when taking out it from the mould, and an office chair backrest support die casting die that provides.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a die-casting die for an office chair backrest support comprises a fixing frame, a cylinder, an upper die and a lower die, wherein the cylinder is fixedly arranged at the top of the fixing frame, the upper die is fixedly arranged at the tail end of a piston rod of the cylinder, the lower die is fixedly arranged at the bottom of the fixing frame, a cavity is arranged in the lower die and below a die core, a movable plate is horizontally arranged in the cavity, four ejector rods which are distributed in a rectangular mode are fixedly arranged on the upper surface of the movable plate, ejector blocks are fixedly arranged at the upper ends of the ejector rods, ejector holes for the ejector blocks to extend into are formed in the bottom of the die core of the lower die, first connecting rods are fixedly arranged on the left side and the right side of the movable plate, first strip-shaped holes for the first connecting rods to extend out are formed in the left side and the right side of the lower die, second strip-shaped holes are formed in the left side and the right side of the fixing frame, two the tip of head rod passes two respectively the second bar hole extends to the outside of mount, go up the left and right sides of mould and all fixedly be equipped with the second connecting rod, two the tip of second connecting rod is equallyd divide and is do not passed two the outside of second bar hole extends to the mount, connect the setting through connecting the rope between head rod and the second connecting rod.

Preferably, the four corners of the surface of the moving plate are provided with limiting sliding holes, limiting sliding rods are vertically and slidably arranged in the limiting sliding holes, and the limiting sliding rods are fixedly arranged in the cavities.

Preferably, the rod wall of the limiting slide rod is fixedly provided with a limiting stop ring below the moving plate, and the lower surface of the moving plate is in contact with the upper side of the limiting stop ring.

Preferably, the springs are fixedly arranged on the left side and the right side of the lower surface of the moving plate, and the lower ends of the two springs are fixedly arranged at the bottom of the cavity.

Preferably, the connecting rope is a stainless steel wire rope.

Preferably, the number of the ejector blocks is four.

Compared with the prior art, the utility model provides an office chair back support die casting die possesses following beneficial effect:

1. this office chair back support die casting die, movable plate through being equipped with, the liftout pole, the liftout piece, the head rod, second connecting rod and connection rope, when the cylinder drives the mould and moves down and cooperates with the lower mould, can accomplish the die-casting shaping of back support, when the mould was upwards lifted up, the second connecting rod on the mould can upwards stimulate the head rod through the stay cord, thereby can drive the inside movable plate rebound of lower mould, movable plate rebound can drive liftout pole and liftout piece rebound and with the back support after the shaping from the inside automatic ejecting of lower mould, because the figure of liftout piece is four, can guarantee the ejecting stationarity of back support, and the phenomenon of warping can not appear, the service quality of back support has been guaranteed.

2. This office chair back support die casting die, through spacing slide bar and the spacing fender ring that is equipped with, spacing slide bar can increase the stationarity that the movable plate reciprocated, and spacing fender ring can move down the movable plate and carry on spacingly to guarantee the upper surface of ejector piece and the mold core surface parallel and level of lower mould, guarantee the back support quality of die-casting.

The part that does not relate to among the device all is the same with prior art or can adopt prior art to realize, the utility model discloses can be automatically with the back support steady ejecting, avoid appearing the phenomenon that the back support warp, guaranteed the service quality of back support.

Drawings

Fig. 1 is a schematic structural view of a die-casting mold for an office chair backrest support provided by the present invention;

fig. 2 is a schematic top view of the moving plate of fig. 1.

In the figure: the device comprises a fixing frame 1, a cylinder 2, an upper die 3, a lower die 4, a moving plate 5, a material ejecting rod 6, a material ejecting block 7, a first connecting rod 8, a second connecting rod 9, a connecting rope 10, a limiting sliding rod 11, a limiting retaining ring 12 and a spring 13.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-2, an office chair backrest support die-casting die comprises a fixed frame 1, a cylinder 2, an upper die 3 and a lower die 4, wherein the cylinder 2 is fixedly arranged at the top of the fixed frame 1, the upper die 3 is fixedly arranged at the tail end of a piston rod of the cylinder 2, the lower die 4 is fixedly arranged at the bottom of the fixed frame 1, a cavity is arranged inside the lower die 4 and below a die core, a movable plate 5 is horizontally arranged inside the cavity, four ejector rods 6 which are distributed in a rectangular shape are fixedly arranged on the upper surface of the movable plate 5, ejector blocks 7 are fixedly arranged at the upper ends of the ejector rods 6, ejector ports for the plurality of ejector blocks 7 to extend into are arranged at the bottom of the die core of the lower die 4, the number of the ejector blocks 7 is four, first connecting rods 8 are fixedly arranged at the left side and the right side of the movable plate 5, first strip-shaped holes for the first connecting rods 8 to extend out are arranged at the left side and the right side of the lower die 4, second bar hole has all been seted up to the left and right sides of mount 1, the tip of two head rods 8 passes two second bar holes respectively and extends to the outside of mount 1, the left and right sides of going up mould 3 all is fixed and is equipped with second connecting rod 9, the tip of two second connecting rods 9 is equallyd divide and is passed two second bar holes respectively and extends to the outside of mount 1, connect the setting through connecting rope 10 between head rods 8 and the second connecting rod 9, connect rope 10 and adopt the wire rope of stainless steel.

Limiting sliding holes are formed in four corners of the surface of the moving plate 5, limiting sliding rods 11 are vertically arranged in the limiting sliding holes in a sliding mode, and the limiting sliding rods 11 are fixedly arranged in the cavities.

And a limit stop ring 12 is fixedly arranged on the rod wall of the limit slide rod 11 and below the moving plate 5, and the lower surface of the moving plate 5 is in contact with the upper side of the limit stop ring 12.

The springs 13 are fixedly arranged on the left side and the right side of the lower surface of the moving plate 5, the lower ends of the two springs 13 are fixedly arranged at the bottom of the cavity, and the moving plate 5 can move down quickly under the action of the springs 13, so that the material pushing block 7 can reset quickly.

The utility model discloses in, during the use, open cylinder 2 work, when cylinder 2 drove last mould 3 and move down and cooperate with lower mould 4, can accomplish the die-casting shaping of back support, when last mould 3 was lifted upwards, second connecting rod 9 on last mould 3 can upwards stimulate head rod 8 through stay cord 10, thereby can drive movable plate 5 inside lower mould 4 and move up, movable plate 5 moves up and can drive liftout pole 6 and liftout piece 7 and upwards move and will shape back support after from the inside automatic liftout of lower mould 4, because the number of liftout piece 7 is four, can guarantee the ejecting stationarity of back support, and the phenomenon that can not appear warping, guaranteed the use quality of back support; the moving plate 5 can be more stably moved up and down through the limiting slide rods 11, and the moving plate 5 can be limited in moving distance down through the limiting baffle rings 12, so that the upper surface of the ejector block 7 is flush with the surface of the die core of the lower die 4, and the quality of the die-cast backrest support is guaranteed.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The die-casting die for the office chair backrest support comprises a fixing frame (1), a cylinder (2), an upper die (3) and a lower die (4), and is characterized in that the cylinder (2) is fixedly arranged at the top of the fixing frame (1), the upper die (3) is fixedly arranged at the tail end of a piston rod of the cylinder (2), the lower die (4) is fixedly arranged at the bottom of the fixing frame (1), a cavity is arranged inside the lower die (4) and below a mold core, a movable plate (5) is horizontally arranged inside the cavity, four material ejecting rods (6) which are distributed in a rectangular shape are fixedly arranged on the upper surface of the movable plate (5), material ejecting blocks (7) are fixedly arranged at the upper ends of the material ejecting rods (6), material ejecting openings for the material ejecting blocks (7) to extend into are formed in the bottom of the mold core of the lower die (4), first connecting rods (8) are fixedly arranged on the left side and the right side of the movable plate (5), the left and right sides of lower mould (4) all is seted up and is used for first bar hole that head rod (8) stretches out, second bar hole, two have all been seted up to the left and right sides of mount (1) the tip of head rod (8) passes two respectively the second bar hole extends to the outside of mount (1), the left and right sides of going up mould (3) is all fixed and is equipped with second connecting rod (9), two the tip of second connecting rod (9) is equallyd divide and is do not passed two the outside of second bar hole extends to mount (1), connect the setting through connecting rope (10) between head rod (8) and second connecting rod (9).

2. The die-casting die for the office chair back support is characterized in that limiting sliding holes are formed in four corners of the surface of the moving plate (5), limiting sliding rods (11) are vertically and slidably arranged in the limiting sliding holes, and the limiting sliding rods (11) are fixedly arranged in the cavities.

3. The die-casting die for the office chair back support is characterized in that a limit stop ring (12) is fixedly arranged on the rod wall of the limit slide rod (11) and below the moving plate (5), and the lower surface of the moving plate (5) is in contact with the upper side of the limit stop ring (12).

4. The die-casting die for the office chair back support is characterized in that springs (13) are fixedly arranged on the left side and the right side of the lower surface of the moving plate (5), and the lower ends of the two springs (13) are fixedly arranged at the bottom of the cavity.

5. The die-casting mold for the office chair back support as claimed in claim 1, wherein the connecting rope (10) is a stainless steel wire rope.

6. The die casting mold for office chair back brackets as claimed in claim 1, characterized in that the number of the ejector blocks (7) is four.