CN212045839U

CN212045839U - Two-plate type injection molding machine

Info

Publication number: CN212045839U
Application number: CN201922203894.5U
Authority: CN
Inventors: 卜莉敏; 孙晓波; 李崇德; 杜呈表; 刘媛
Original assignee: Borch Machinery Co Ltd
Current assignee: Borch Machinery Co Ltd
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-12-01
Anticipated expiration: 2029-12-10

Abstract

The utility model discloses a two-plate injection molding machine, including hydro-cylinder, fixed die plate, be suitable for with fixed die plate complex movable mould board. The oil cylinder comprises a cylinder body and a piston rod movably connected with the cylinder body, the piston rod is mechanically connected with the movable template, and the cylinder body is pivotally connected with the fixed template so that the oil cylinder can rotate relative to the fixed template in the horizontal direction. The utility model discloses then through with cylinder body pivotal connection fixed die plate to make the cylinder body can rotate for the fixed die plate in the horizontal direction, thereby eliminated the extrusion force of piston rod to the sealing washer of the front end housing of hydro-cylinder, prevented promptly that the sealing washer from being worn and torn by too fast, and then solved the problem of hydro-cylinder oil leak.

Description

Two-plate type injection molding machine

Technical Field

The utility model relates to an injection molding machine technical field especially relates to two board-like injection molding machines.

Background

A two-plate injection molding machine typically has the cylinder body 31 of the cylinder 3 fixed to the stationary platen 1, and the piston rod 32 of the cylinder 3 pivotally connected to the movable platen 2 by a bearing and pin combination. For example, fig. 1 shows a conventional two-plate injection molding machine of the prior art, defining the first side of the stationary platen 1 to be the same side as the first side of the movable platen 2. Obviously, the cylinder 31 of the oil cylinder 3 is fixedly connected with the first side of the fixed die plate 1, and the piston rod 32 of the oil cylinder 3 is fixedly connected with the first side of the movable die plate 2. However, due to the lack of machining accuracy and mounting experience, the oil cylinder 3 is likely to leak oil after the two-plate injection molding machine is used for a long time.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a two-plate injection molding machine, which can solve the problem of oil leakage of an oil cylinder.

The purpose of the utility model is realized by adopting the following technical scheme:

the two-plate injection molding machine comprises an oil cylinder, a fixed template and a movable template matched with the fixed template, wherein the oil cylinder comprises a cylinder body and a piston rod movably connected with the cylinder body, the piston rod is mechanically connected with the movable template, and the cylinder body is pivotally connected with the fixed template so that the oil cylinder can rotate relative to the fixed template in the horizontal direction.

Further, the fixed die plate is detachably provided with a fixed seat, and the cylinder body is in pivot connection with the fixed seat.

Furthermore, the fixed seats are even and are distributed at the corners of the fixed template diagonally.

Further, the fixed seat comprises a supporting seat, a rotating seat and a first hinge column, the rotating seat is provided with a through hole, and the rotating seat is sleeved with the cylinder body through the through hole; the supporting seat and the rotating seat are in pivot connection through the first hinge column, and the axis of the first hinge column is vertically placed.

Further, rotate the seat and seted up first hinge hole, the second hinge hole has been seted up to the supporting seat, the first end activity of first hinge post is cup jointed first hinge hole, the second end activity of first hinge post is cup jointed the second hinge hole.

Further, the diameter of the first end of the first hinge post is greater than the diameter of the second end of the first hinge post.

Furthermore, the first hinged columns are provided with two, and the two first hinged columns are oppositely arranged on two sides of the rotating seat along the vertical direction.

Furthermore, a positioning hole is formed in the plane where the supporting seat is abutted to the fixed die plate, a positioning pin is installed in the positioning hole, and the positioning pin is inserted into the fixed die plate so as to complete positioning between the supporting seat and the fixed die plate; the supporting seat is connected with a bolt, and is fixedly connected with the fixed die in a detachable mode through the bolt.

Further, the first hinge post is a pin.

Furthermore, a joint bearing is fixed at the tail end of the piston rod, a second hinged column is sleeved on an inner ring of the joint bearing in a sleeved mode, and the second hinged column is connected with the movable template in a pivoting mode.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model discloses then through with cylinder body pivotal connection fixed die plate to make the cylinder body can rotate for the fixed die plate in the horizontal direction, thereby eliminated the extrusion force of piston rod to the sealing washer of the front end housing of hydro-cylinder, prevented promptly that the sealing washer from being worn and torn by too fast, and then solved the problem of hydro-cylinder oil leak.

Drawings

FIG. 1 is a schematic structural view of a two-plate injection molding machine of the prior art;

FIG. 2 is a schematic structural view of a two-plate injection molding machine of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is a partial enlarged view of fig. 2 at B;

fig. 5 is a partial cross-sectional view of fig. 2 (and in an exploded state).

In the figure: 1. fixing a template; 2. moving the template; 3. an oil cylinder; 31. a cylinder body; 32. a piston rod; 4. a fixed seat; 41. a supporting seat; 411. a through hole; 412. a second hinge hole; 42. a rotating seat; 421. a first hinge hole; 422. positioning holes; 5. a first hinge post; 6. a knuckle bearing; 7. a second hinge post.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Fig. 2-5 show a two-plate injection molding machine according to a preferred embodiment of the present invention, which includes an oil cylinder 3, a fixed mold plate 1, and a movable mold plate 2 adapted to cooperate with the fixed mold plate 1. The oil cylinder 3 comprises a cylinder body 31 and a piston rod 32 movably connected with the cylinder body 31, the piston rod 32 is mechanically connected with the movable template 2, and the cylinder body 31 is pivotally connected with the fixed template 1 so that the oil cylinder 3 can rotate relative to the fixed template 1 in the horizontal direction.

It can be understood that the output end of the piston rod 32 is mechanically connected with the movable die plate 2, and the cylinder 31 is pivotally connected with the fixed die plate 1, so that the movable die plate 2 can be close to or far from the fixed die plate 1 under the driving of the oil cylinder 3. However, although the cylinder 3 is manufactured while ensuring the coaxiality of the piston rod 32 and the cylinder body 31; however, because both the fixed die plate 1 and the movable die plate 2 have processing errors, and the installation accuracy is insufficient in the installation process, after the oil cylinder 3 is installed, because the output end of the piston rod 32 is mechanically connected with the movable die plate 2, and the cylinder body 31 is mechanically connected with the fixed die plate 1, the rigid connection causes the coaxiality of the piston rod 32 and the cylinder body 31 to deviate, so that gaps at various positions between a sealing ring of a front end cover of the oil cylinder 3 and the piston rod 32 are not uniform (i.e., the piston rod 32 unidirectionally extrudes the sealing ring of the front end cover of the oil cylinder 3 for a long time), after long-term use, one side of the sealing ring is seriously worn, and the piston rod 32. And the utility model discloses then through with cylinder body 31 pivotal connection fixed die plate 1 to make cylinder body 31 rotate for fixed die plate 1 on the horizontal direction, thereby eliminated the extrusion force of piston rod 32 to the sealing washer of the front end housing of hydro-cylinder 3, prevented promptly that the sealing washer from being worn and torn unevenly, and then solved the problem of hydro-cylinder 3 oil leak.

In addition, in order to ensure the installation accuracy and facilitate the processing, the fixed die plate 1 includes the fixed seat 4 when being integrally formed, and at this time, the outer curved surface of the cylinder body 31 needs to be subjected to finish machining so as to be matched with the fixed seat 4 (the existing fixed seat 4 needs to be formed with a finished U-shaped groove so as to match the outer surface of the cylinder body 31 through the U-shaped groove); moreover, after the integral casting molding, the fixing seat 4 occupies a large amount of space when the whole machine is packed, the transportation amount of single products is reduced, and the transportation cost is improved. Therefore, in order to further optimize the technical solution, the fixed die plate 1 is detachably mounted with the fixed seat 4, and the cylinder 31 is pivotally connected with the fixed seat 4. It can be understood that, since the cylinder 31 is pivotally connected to the fixed die plate 1, the problem of the coaxiality deviation between the cylinder 31 and the piston rod 32 is solved, the external curved surfaces of the fixed die plate 1, the movable die plate 2 and the cylinder 31 do not need to be subjected to finish machining, and the machining difficulty and the machining cost are greatly reduced. And the fixing seat 4 can be detached when the whole machine is packaged, so that the space occupied by the whole machine is saved, the transportation capacity of single products is improved, and the transportation cost is reduced.

Preferably, the fixed seats 4 are provided in an even number and are diagonally distributed at the corners of the fixed die plate 1. That is, the number of the fixing seats 4 is preferably 2 or 4. Obviously, adopt 2 fixing bases 4 to be the diagonal ground and drive movable mould board 2, not only can avoid the not enough problem of installation accuracy, can guarantee moreover that movable mould board 2 moves steadily. The diagonal distribution mode only needs to follow the existing distribution mode, for example, the fixing seat 4 is generally fixedly installed on the side wall of the fixed die plate 1.

In the present embodiment, as a preferred embodiment, the fixed seat 4 includes a supporting seat 41, a rotating seat 42, and a first hinge column 5, the rotating seat 42 has a through hole 411, and the rotating seat 42 is sleeved on the cylinder body 31 through the through hole 411; the supporting seat 41 and the rotating seat 42 are pivotally connected by a first hinge column 5, and the axis of the first hinge column 5 is vertically placed.

Preferably, the rotating seat 42 is provided with a first hinge hole 421, the supporting seat 41 is provided with a second hinge hole 412, the first end of the first hinge column 5 is movably sleeved with the first hinge hole 421, and the second end of the first hinge column 5 is movably sleeved with the second hinge hole 412. It can be understood that the two ends of the first hinge post 5 are movably sleeved, so that the installation and the disassembly among the rotating seat 42, the supporting seat 41 and the first hinge post 5 are more facilitated, and the efficiency of installing and disassembling the oil cylinder 3 is improved. That is, other arrangements may be that the first hinge column 5 is fixed to the rotating seat 42 or fixed to the supporting seat 41. In order to facilitate the installation of the supporting seat 41, the supporting seat 41 is formed by two separated rectangular blocks which are identical to each other, and each rectangular block is provided with a second hinge hole 412.

Preferably, the first end of the first hinge post 5 has a diameter greater than the diameter of the second end of the first hinge post 5. Obviously, this is more favorable to the support and spacing of first hinge post 5 by supporting seat 41, i.e. makes first hinge post 5 be difficult for droing.

Preferably, two first hinge columns 5 are provided, and the two first hinge columns 5 are oppositely arranged on two sides of the rotating seat 42 along the vertical direction; moreover, the two first hinge columns 5 are respectively matched with one of the second hinge holes 412; thereby, the upper and lower sides of the supporting seat 41 are stressed more evenly, so that the coaxiality between the piston rod 32 and the cylinder 31 is better.

Preferably, a positioning hole 422 is formed in the plane where the supporting seat 41 abuts against the fixed die plate 1, a positioning pin is installed in the positioning hole 422, and the positioning pin is inserted into the fixed die plate 1 to complete positioning between the supporting seat 41 and the fixed die plate 1; the support base 41 is connected with a bolt and is fixedly connected with the fixed die in a detachable mode through the bolt. Obviously, the positioning pin is enclosed by the supporting seat 41 and the fixed die plate 1, so that the positioning function is achieved, and the fixed die plate is not easy to fall off. The supplementary description is that the connection of the fixed seat 4 and the fixed die plate 1 through bolts is only one of the preferable detachable modes, and can also be fixed through other conventional clamping, mortise and tenon connection and the like.

Preferably, the first hinge pillar 5 is a pin, and it is understood that the first hinge pillar 5 may be a polished rod or a rod with other structure, that is, a rotating shaft.

In this embodiment, preferably, the end of the piston rod 32 is fixed with the knuckle bearing 6, an inner ring of the knuckle bearing 6 is sleeved with the second hinge column 7, and the second hinge column 7 is pivotally connected to the movable die plate 2. Obviously, besides this preferred mode, the piston rod 32 may be directly fixed (e.g., welded) to the movable die plate 2, or the piston rod 32 and the movable die plate 2 may be connected by a high-strength spring; or a buffer cushion is arranged in the middle of the bolt fixed connection for buffer connection.

The embodiments of the present invention are not limited to the above embodiments, and according to the contents of the above embodiments of the present invention, the above preferred embodiments can also make modifications, replacements or combinations in various forms without departing from the basic technical idea of the present invention and without conflict, and the obtained other embodiments all fall within the scope of the present invention.

Claims

1. Two board-like injection molding machines, including hydro-cylinder, fixed die plate, be suitable for with fixed die plate complex movable mould board, the hydro-cylinder includes the cylinder body, with cylinder body swing joint's piston rod, its characterized in that: the piston rod is mechanically connected with the movable template, and the cylinder body is pivotally connected with the fixed template, so that the oil cylinder can rotate relative to the fixed template in the horizontal direction.

2. The two-plate injection molding machine of claim 1, wherein: the fixed die plate is detachably provided with a fixed seat, and the cylinder body is in pivot connection with the fixed seat.

3. The two-plate injection molding machine of claim 2, wherein: the fixed seats are even and are distributed at the corners of the fixed template diagonally.

4. The two-plate injection molding machine of claim 2, wherein: the fixed seat comprises a supporting seat, a rotating seat and a first hinge column, the rotating seat is provided with a through hole, and the rotating seat is sleeved with the cylinder body through the through hole; the supporting seat and the rotating seat are in pivot connection through the first hinge column, and the axis of the first hinge column is vertically placed.

5. The two-plate injection molding machine of claim 4, wherein: the rotating seat is provided with a first hinge hole, the supporting seat is provided with a second hinge hole, the first end of the first hinge column is movably sleeved with the first hinge hole, and the second end of the first hinge column is movably sleeved with the second hinge hole.

6. The two-plate injection molding machine of claim 5, wherein: the diameter of the first end of the first hinge post is greater than the diameter of the second end of the first hinge post.

7. The two-plate injection molding machine of claim 4, wherein: the first hinge columns are arranged in two numbers, and the two first hinge columns are oppositely arranged on two sides of the rotating seat along the vertical direction.

8. The two-plate injection molding machine of claim 4, wherein: a positioning hole is formed in the plane where the supporting seat is abutted to the fixed die plate, a positioning pin is installed in the positioning hole, and the positioning pin is inserted into the fixed die plate so as to complete positioning between the supporting seat and the fixed die plate; the supporting seat is connected with a bolt, and is fixedly connected with the fixed die in a detachable mode through the bolt.

9. The two-plate injection molding machine of claim 4, wherein: the first hinge post is a pin.

10. The two-plate injection molding machine of claim 1, wherein: the tail end of the piston rod is fixed with a joint bearing, an inner ring of the joint bearing is sleeved with a second hinged column, and the second hinged column is in pivot connection with the movable template.