CN203830662U

CN203830662U - Sand core ejection device

Info

Publication number: CN203830662U
Application number: CN201420245041.2U
Authority: CN
Inventors: 吴泽峰
Original assignee: NINGBO RIFENG MOLD CO Ltd
Current assignee: NINGBO RIFENG MOLD CO Ltd
Priority date: 2014-05-14
Filing date: 2014-05-14
Publication date: 2014-09-17
Anticipated expiration: 2024-05-14

Abstract

The utility model discloses a sand core ejection device. The sand core ejection device comprises a mandril positioned on the bottom of a core box, a sliding sleeve which sleeves the lower end of the mandril, and a drive crank and a connecting rod used for driving the sliding sleeve, wherein the mandril is step-shaped; the end, with a larger size, of the mandril extends into the bottom of the core box to contact a sand core; the end, with a smaller size, of the mandril is sleeved with the sliding sleeve through interference fit; the drive crank, the connecting rod and the sliding sleeve are hinged in sequence; and the sliding sleeve pushes the mandril to eject the sand core in the core box at a uniform speed under the action of the drive crank and the connecting rod. According to the sand core ejection device disclosed by the utility model, power is transmitted to the mandril through the sliding sleeve through the driving of the drive crank and the connecting rod to drive the mandril to eject the sand core out at the uniform speed; the sand core in the core box is ejected out quickly and completely; and the problem that the sand core is easily cracked or is incomplete after being ejected out caused by ejecting out the sand core by manual operation is solved.

Description

A kind of core liftout attachment

Technical field

The utility model relates to a kind of core liftout attachment.

Background technology

Core box, as a kind of technological equipment of core sand being made to core, can be made by timber, plastics, metal or other materials, at core mould, makes in core process, tends to occur that core is difficult for ejecting, core is easily cracked or eject the defects such as rear incompleteness.

So, being necessary to provide a kind of core liftout attachment, can fast and intactly the core in core box be ejected, to overcome above-mentioned technological deficiency.

Utility model content

Technical problem to be solved in the utility model is: a kind of core liftout attachment is provided, can fast and intactly the core in core box be ejected, to overcome, the core of making in prior art is difficult for ejecting, core is easily cracked or eject the defects such as rear incompleteness.

For solving the problems of the technologies described above, the technical solution of the utility model is:

A kind of core liftout attachment is provided, comprises: be positioned at the push rod and the sliding sleeve that is socketed in described push rod lower end of core box bottom, and for driving driving crank and the connecting rod of described sliding sleeve; Described push rod is stepped, and the bottom that described core box is stretched in the larger-size one end of described push rod contacts with core, and one end that described push rod size is less and described sliding sleeve are interference fit socket; Described driving crank, connecting rod and sliding sleeve successively order are hinged, described in slide over and under the effect of described driving crank and connecting rod, promote described push rod and at the uniform velocity will be positioned at the described core jack-up of described core box.

In above-mentioned core liftout attachment, the junction of described core box and described push rod is provided with rubber sleeve, and described rubber sleeve is enclosed within the outside of described push rod.

In above-mentioned core liftout attachment, the pivot of described driving crank is on the axis of described push rod.

Adopted technique scheme, the beneficial effects of the utility model are: compared with prior art, core liftout attachment of the present utility model, by the driving of driving crank and connecting rod, power is passed through to sliding sleeve transmission to push rod, drive push rod at the uniform velocity core to be ejected, realized fast and intactly the core in core box has been ejected, solved manual operation and ejected core and cause core easily cracked or eject the problem of rear incompleteness.The utility model is simple in structure, can fast and intactly the core in core box be ejected, and has improved the make efficiency of core.

Accompanying drawing explanation

Fig. 1 is the structural representation of the core liftout attachment of the utility model embodiment;

Wherein, 1 is core box, and 2 is push rod, and 3 is sliding sleeve, and 4 is driving crank, and 5 is connecting rod; 6 is core; 7 is rubber sleeve.

The specific embodiment

Below in conjunction with drawings and Examples, the specific embodiment of the present utility model is described in further detail.Following examples are used for illustrating the utility model, but can not be used for limiting scope of the present utility model.

Fig. 1 is the structural representation of the core liftout attachment of the utility model embodiment.

As shown in Figure 1, a kind of core liftout attachment of the utility model embodiment, comprising: be positioned at the push rod 2 and the sliding sleeve 3 that is socketed in push rod 2 lower ends of core box 1 bottom, and for driving driving crank 4 and the connecting rod 5 of sliding sleeve 3.By driving crank 4 and connecting rod 5, drive sliding sleeves 3, drive push rod 2 by being positioned at core 6 jack-up of core box 1, because driving crank 4 is controlled, can solve manual operation and eject core and cause core easily cracked or eject the problem of rear incompleteness.

Particularly, push rod 2 is stepped, and the bottom that core box 1 is stretched in the larger-size one end of push rod 2 contacts with core 6, and one end that push rod 2 sizes are less and sliding sleeve 3 are interference fit socket.Driving crank 4, connecting rod 5 and sliding sleeve 3 successively order are hinged, sliding sleeve 3 promotes push rod 2 and at the uniform velocity will be positioned at core 6 jack-up of core box 1 under the effect of driving crank 4 and connecting rod 5, for guaranteeing power that driving crank 4 applies and the dead in line of push rod 2, the pivot of driving crank 4 is arranged on the axis of push rod 2.

In embodiment of the present utility model, in order to guarantee the sealing of 1 of push rod 2 and core box and to reduce the wear-out failure to core box 1, in core box 1 and the junction of push rod 2, be provided with rubber sleeve 7, rubber sleeve 7 is enclosed within the outside of push rod 2.

The course of work: after core 6 moulding, start the power source of driving crank 4, driving crank 4 drives sliding sleeve 3 by connecting rod 5, drive push rod 2 to be positioned at core 6 jack-up of core box 1, until core 6 is ejected to core box 1, can be according to core 6 moulding situations, control the velocity of rotation of driving crank 4, guarantee to eject core 6 is complete.

As mentioned above, core liftout attachment of the present utility model, by the driving of driving crank and connecting rod, power is passed through to sliding sleeve transmission to push rod, drive push rod at the uniform velocity core to be ejected, realized fast and intactly the core in core box has been ejected, solved manual operation and ejected core and cause core easily cracked or eject the problem of rear incompleteness.The utility model is simple in structure, can fast and intactly the core in core box be ejected, and has improved the make efficiency of core.

The utility model is not limited to above-mentioned concrete embodiment, and those of ordinary skill in the art is from above-mentioned design, and without performing creative labour, all conversion of having done, within all dropping on protection domain of the present utility model.

Claims

1. a core liftout attachment, it is characterized in that, comprise: be positioned at the push rod (2) of core box (1) bottom and be socketed in the sliding sleeve (3) of described push rod (2) lower end, and for driving driving crank (4) and the connecting rod (5) of described sliding sleeve (3); Described push rod (2) is stepped, the bottom that described core box (1) is stretched in the larger-size one end of described push rod (2) contacts with core (6), and one end that described push rod (2) size is less and described sliding sleeve (3) are interference fit socket; Described driving crank (4), connecting rod (5) and sliding sleeve (3) successively order are hinged, and described sliding sleeve (3) promotes described core (6) jack-up that described push rod (2) at the uniform velocity will be positioned at described core box (1) under the effect of described driving crank (4) and connecting rod (5).

2. core liftout attachment according to claim 1, is characterized in that, described core box (1) is provided with rubber sleeve (7) with the junction of described push rod (2), and described rubber sleeve (7) is enclosed within the outside of described push rod (2).

3. core liftout attachment according to claim 1, is characterized in that, the pivot of described driving crank (4) is on the axis of described push rod (2).