阅读说明：本技术 一种双工位射芯机用顶料机构 (Ejecting mechanism for double-station core shooting machine ) 是由 张典春 于 2019-11-27 设计创作，主要内容包括：本发明公开了射芯机技术领域的一种双工位射芯机用顶料机构,包括工作台,工作台上对称固定有两个导向板,导向板上滑动连接有下装模板,下装模板的底面设有齿条推动组件,中心处设有顶板、顶杆和d顶块,导向板上设有转动组件,本发明通过将模具安装在下装模板上,通过射芯机进行覆芯砂成型加工,加工结束后,通过推动组件带动下装模板和模具向外侧移动,使下装模板上的模具与上装模板位置错开,便于后续取出砂芯,且移动的同时,通过齿条和转动组件的作用使顶块、顶杆和顶板向上移动,并将模具顶出,从而完成对砂芯的取出,砂芯取出更加方便快速。(The invention discloses an ejection mechanism for a double-station core shooter, which belongs to the technical field of core shooters and comprises a workbench, wherein two guide plates are symmetrically fixed on the workbench, a lower template is connected on the guide plates in a sliding manner, a rack pushing assembly is arranged on the bottom surface of the lower template, a top plate, an ejector rod and a d ejector block are arranged at the center of the lower template, and a rotating assembly is arranged on the guide plates.)

1. The utility model provides a duplex position core shooting machine liftout mechanism, includes workstation (1), its characterized in that: two guide plates (101) are symmetrically fixed on the front side of the top surface of the workbench (1), a through groove is formed in the middle of the top surface of each guide plate (101), two parallel guide rods (102) are symmetrically fixed on two sides, a lower template (3) is arranged above each guide plate (101), the bottom surface of each lower template (3) is in sliding connection with the corresponding two guide rods (102), racks are symmetrically fixed on two sides of the bottom surface of each lower template (3), a pushing assembly is arranged in the middle of the bottom surface, a central plate groove is formed in the center of the top surface of each lower template (3), a top rod is connected to the center of the bottom surface of each plate groove in a sliding mode along the vertical direction, the top end of each top rod extends into the plate groove and is fixed with a top plate (303), a moving hole is extended from the bottom end of each top rod and is fixed with a top block (304), rotating seats (103) are symmetrically arranged on two sides of the through groove of each, a rotating assembly is arranged between the two rotating seats, and the rack is correspondingly connected with the rotating assembly.

2. The ejection mechanism for the double-station core shooter according to claim 1, characterized in that: the pushing assembly comprises a pushing cylinder fixed on the workbench (1), the output end of the pushing cylinder is fixed with a pushing plate (301), and the pushing plate (301) is vertically fixed on the front side of the bottom surface of the lower template (3) and is located in the middle of the front end.

3. The ejection mechanism for the double-station core shooter according to claim 1, characterized in that: the rotating assembly comprises a rotating shaft (2), the two sides of the rotating shaft (2) are rotatably connected with a rotating seat (103) through bearings, an eccentric wheel (201) is fixed in the middle of the rotating shaft (2), a top block (304) is correspondingly connected with the wheel surface of the eccentric wheel (201), gears (202) are extended out of the two ends of the rotating shaft (2) and are fixed on the rotating shaft (2), and the gears (202) are meshed with racks (302).

4. The ejection mechanism for the double-station core shooter according to claim 1, characterized in that: the top surface of lower dress template (3) evenly is provided with a plurality of mounting holes, and the mounting hole is established to the screw hole.

5. The ejection mechanism for the double-station core shooter according to claim 1, characterized in that: the rotary seat (103) is in sliding connection with the top surface of the guide plate (101), a threaded hole is formed in the front side surface of the rotary seat, a screw rod is in threaded connection with the threaded hole in a threaded mode, the screw rod is in rotary connection with the guide plate (101), and a rotary handle is fixed to the front side end of the rotary seat.

Technical Field

The invention relates to the technical field of core shooters, in particular to a material ejecting mechanism for a double-station core shooter.

Background

The injection and compression molding machine is a common injection and compression molding machine which uses compressed air to uniformly inject molding sand into a sand box for pre-compaction, and then applies pressure to perform compaction, and the common injection and compression molding machine is a vertical parting flaskless injection and compression molding machine and a horizontal parting flaskless injection and compression molding machine.

The vertical parting flaskless shooting and pressing molding machine does not need a sand box for molding, molding sand is directly shot into a molding chamber with a template, the size precision of the manufactured sand mould is high, cavities are arranged on two surfaces of the sand box, the production efficiency is high, core setting is difficult, and the requirement on the quality of the molding sand is strict; the horizontal parting and stripping injection molding machine utilizes the sand box to mold, and the sand box is closed and stripped after being manufactured, so that the core setting is convenient, and the production efficiency is high.

The core shooter adopts precoated sand to make the core, and is widely applied to the casting industry, and the core made by the core shooter has accurate size and smooth surface; the precoated sand process is characterized in that thermoplastic phenolic resin, a latent curing agent and a lubricant are prepared into precoated sand through a certain precoating process, when the precoated sand is heated, the resin coated on the surface of sand grains is melted, and a linear structure is quickly converted into a non-melted body structure, so that the precoated sand is cured and molded.

The core shooting machine has the working principle that a core-sand mixture taking liquid or solid thermosetting resin as a binder is shot into a heated core box, a sand core is preheated in the core box and quickly hardened to a certain thickness of about 5-10 mm, and then the sand core is taken out, so that a high-quality sand core finished product with a smooth surface and an accurate size is formed. The core shooter has high production efficiency and accurate size of the sand mold, and can properly reduce the processing amount; simple operation and high casting yield.

When the double-station core shooter works, a lower die is arranged on a lower die plate, the lower die plate is usually fixed on a workbench and is inconvenient to move, the upper die and the lower die are opposite in position, and a material ejecting mechanism is not arranged and is only taken out manually, so that the core taking is inconvenient.

Based on the above, the invention designs the material ejecting mechanism for the double-station core shooting machine, so as to solve the problems.

Disclosure of Invention

The invention aims to provide a material ejecting mechanism for a double-station core shooting machine, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a material ejecting mechanism for a double-station core shooting machine comprises a workbench, wherein two guide plates are symmetrically fixed on the front side of the top surface of the workbench, a through groove is formed in the middle of the top surface of each guide plate, two parallel guide rods are symmetrically fixed on the two sides of each guide plate, a lower template is arranged above the guide plates, the bottom surface of the lower template is connected with the two corresponding guide rods in a sliding way, racks are symmetrically fixed on two sides of the bottom surface of the lower template, a pushing component is arranged in the middle of the bottom surface, the center of the top surface of the lower template is provided with a central plate groove, the center of the bottom surface of the plate groove is connected with a mandril in a sliding way along the vertical direction, the top end of the mandril extends into the plate groove, the bottom end of the ejector rod extends out of the moving hole and is fixed with an ejector block, rotating seats are symmetrically arranged on two sides of the through groove of the guide plate, a rotating assembly is arranged between the two rotating seats, and the rack is correspondingly connected with the rotating assembly.

Preferably, the pushing assembly comprises a pushing cylinder fixed on the workbench, a pushing plate is fixed at the output end of the pushing cylinder, and the pushing plate is vertically fixed on the front side of the bottom surface of the lower template and is located in the middle of the front end.

Preferably, the rotating assembly comprises a rotating shaft, two sides of the rotating shaft are rotatably connected with the rotating seat through bearings, an eccentric wheel is fixed in the middle of the rotating shaft, the top block is correspondingly connected with the wheel surface of the eccentric wheel, and two ends of the rotating shaft extend out of the rotating shaft and are fixed with gears which are meshed with the racks.

Preferably, the top surface of lower dress template evenly is provided with a plurality of mounting holes, and the mounting hole is set up to the screw hole.

Preferably, the rotating seat is connected with the top surface of the guide plate in a sliding mode, a threaded hole is formed in the front side surface of the rotating seat, a screw rod is connected with the threaded hole in a threaded mode, the screw rod is connected with the guide plate in a rotating mode, and a rotating handle is fixed to the front side end of the screw rod.

Compared with the prior art, the invention has the beneficial effects that: according to the invention, the mold is arranged on the lower template, the core-coated sand molding processing is carried out through the core shooter, after the processing is finished, the lower template and the mold are driven to move outwards through the pushing assembly, the eccentric wheel is driven to rotate through the rotating shaft under the action of the rack and the gear while the lower template and the mold move outwards, the ejector block on the bottom surface of the lower template is contacted with the eccentric wheel and jacked up, the ejector block and the ejector rod drive the top plate to move upwards, so that the top plate extends out of the plate groove, the mold is ejected out, the sand core is taken out, the mold on the lower template and the upper template are staggered in position through the pushing cylinder and the ejector plate, the sand core is taken out conveniently, and the top plate automatically ejects the mold while moving outwards, so that the sand core is taken out more conveniently and rapidly.

Drawings

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

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion of the present invention at A;

FIG. 3 is a schematic view of the attachment of the undermount template and the table of the present invention;

fig. 4 is a schematic view of the position of the lower template and the top plate according to the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1-workbench, 101-guide plate, 102-guide rod, 103-rotating seat, 2-rotating shaft, 201-eccentric wheel, 202-gear, 3-lower template, 301-push plate, 302-rack, 303-top plate and 304-top block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.