CN102019409A

CN102019409A - Sand ejector device used for poking box

Info

Publication number: CN102019409A
Application number: CN 200910183426
Authority: CN
Inventors: 王玉南
Original assignee: Suzhou Suzhu Foundry Machinery Manufacture Co Ltd
Current assignee: Suzhou Suzhu Foundry Machinery Manufacture Co Ltd
Priority date: 2009-09-21
Filing date: 2009-09-21
Publication date: 2011-04-20

Abstract

The invention relates to a sand ejector device used for a poking box, which comprises a poking head, a group of guiding bars arranged vertically and an oil cylinder, wherein the upper end surface of the poking head is an acting surface; the guiding bars are respectively arranged in respective guiding bar seat; the upper ends of the guiding bars are embedded in the poking head and are arranged uniformly and separately relative to the lower end surface of the whole poking head so that the poking head is restricted to move in the horizontal position and can move freely in the vertical position; and the head of a piston rod of the oil cylinder abuts against the lower end surface of the poking head to form a drive force driving the poking head upwards. The sand ejector device changes traditional poking down to ejecting up, thereby solving the problem that the unboxing speed of castings under the effects of gravity and impact force during poking down is too high. Thus, the damage rate of incompletely cooled castings is reduced.

Description

A kind of be used to disclose case eject the sand device

Technical field

The present invention relates to a kind of being used for when disclosing case and eject the sand device what close-in the sandbox and foundry goods separated with sandbox.

Background technology

In the casting and molding transfer matic, before disclosing case, to cool off foundry goods, but some casting section thickness is thicker, though cooling processing through cooling section, but foundry goods can not obtain cooling fully, when the operation of case is disclosed in execution downwards, because it is very big to disclose case strength, impulsive force is very big, being the vibrations that rely on external force when disclosing case separates the close-in the sandbox and foundry goods and sandbox, disclosing of carrying out when the thicker foundry goods of wall thickness does not cool off fully is out of shape or the crack after the case operation will cause the foundry goods that cools off fully not to be subjected to impacting, thereby the situation that causes foundry goods to scrap takes place.Because the simple operation that relies on prolongation to improve cooling rate cool time is also uneconomical concerning actual production, thereby preferably discloses case by adjustment and achieve the goal.

Summary of the invention

Technical problem to be solved by this invention is to overcome above-mentioned deficiency, provide a kind of can avoid damaging the thicker workpiece of wall thickness since scrap after disclosing case under the cooling situation not in place eject the sand device; Its technical problem to be solved can be implemented by the following technical programs.

A kind of be used to disclose case eject the sand device, comprising:

One discloses head, and a described upper surface of disclosing is an acting surface; With

One group of guide post of vertically arranging, described each guide post are located at respectively separately in the guide rod seat, and the upper end of described each guide post is embedded in described disclosing in the head and with respect to a whole lower surface of disclosing and is even dispersed arrangement; Form the guide post group to described control of disclosing head, and keep disclosing the move freely state of head in the mobile restricted and vertical position of level position in space bit; With

One oil cylinder, the head of described oil cylinder piston bar lean on described lower surface of disclosing head, form one and drive the described driving force that head makes progress of disclosing.

That adopts this technical scheme ejects the sand device, the excessive deficiency of bringing of solution impulsive force when disclosing case, by original disclosing being changed into upwards top downwards, so just solved the too fast problem of speed that acts on when disclosing because in gravity and the impulsive force when making the foundry goods outlet downwards.Thereby reduced not cooling off the damage probability of foundry goods fully.

As one of preferred embodiment of the technical program, described piston rod head with disclose the geometric center position that leaning of a lower surface a little is positioned at the lower surface.When appearing at centre bit, effect point helps the more optimization, more economical of active force.

As the further improvement of the technical program, described piston rod head can be fixedlyed connected with the described head of disclosing.

Also as one of preferred embodiment of the technical program, described guide post is 2 or 3.Adopt 2 or 3 guide post to realize required effect with few structure of trying one's best.

As the further improvement of the technical program, described upper surface of disclosing head is the plane.

Description of drawings

Below in conjunction with accompanying drawing the specific embodiment of the present invention being done one describes in detail.

Fig. 1 is a structural representation of the present invention;

---disclose 2---guide post 21---guide rod seat a 3---oil cylinder among the figure: 1

The specific embodiment

What be used to disclose case as shown in Figure 1 ejects the sand device, disclose 1 acting surface up, the following left and right sides is fixing by guide post 2 respectively, guide post 2 is set out from guide rod seat 21, disclose a middle part of 1 lower end and contact with the piston rod head of oil cylinder 3, piston rod head leans to be disclosed on the head, by the liquid presses piston pole promotion of oil cylinder, realize jack-up and the operation that falls to disclosing head, and then can be used to disclose the sand that ejects of case.

Two guide rod seats can connect as one by a plate (representing with double dot dash line among the figure), because guide post is by the spacing and guiding of guide rod seat institute, thereby disclose head and only limit in the up and down motion in orientation, the skew in its orientation, left and right sides will be restricted, and can help the application of force that it discloses case like this.And a smooth upper side of disclosing also helps sandbox finished and discloses the case operation.

This device solves when disclosing case downwards because it is very big to disclose case strength, impulsive force is very big, causes fully that the foundry goods of cooling is not subjected to impacting back distortion or crack, the problem that causes foundry goods to scrap has been brought into play positive effect.

Claims

One kind be used to disclose case eject the sand device, it is characterized in that, comprising:

One discloses head, and a described upper surface of disclosing is an acting surface; With

One group of guide post of vertically arranging, described each guide post are located at respectively separately in the guide rod seat, and the upper end of described each guide post is embedded in described disclosing in the head and with respect to a whole lower surface of disclosing and is even dispersed arrangement; Form the guide post group to described control of disclosing head, and keep disclosing the move freely state of head in the mobile restricted and vertical position of level position in space bit; With

One oil cylinder, the head of described oil cylinder piston bar lean on described lower surface of disclosing head, form one and drive the described driving force that head makes progress of disclosing.
According to claim 1 described be used to disclose case eject the sand device, it is characterized in that, described piston rod head with disclose the geometric center position that leaning of a lower surface a little is positioned at the lower surface.
According to claim 1 or 2 described be used to disclose case eject the sand device, it is characterized in that described piston rod head is fixedlyed connected with described disclosing.
According to claim 1 described be used to disclose case eject the sand device, it is characterized in that described guide post is 2 or 3.
According to claim 1,2 or 4 described be used to disclose case eject the sand device, it is characterized in that described upper surface of disclosing head is the plane.