CN111112588A

CN111112588A - Shakeout device

Info

Publication number: CN111112588A
Application number: CN202010074216.8A
Authority: CN
Inventors: 顾秋峰
Original assignee: Suzhou Mingzhi Technology Co Ltd
Current assignee: Suzhou Mingzhi Technology Co Ltd
Priority date: 2020-01-22
Filing date: 2020-01-22
Publication date: 2020-05-08
Also published as: WO2021147475A1

Abstract

The invention belongs to the technical field of sand casting, and discloses a shakeout device which comprises a workbench, a clamping mechanism and a vibration hammer, wherein the workbench is used for bearing a casting to be shakeout, the clamping mechanism is used for fixing the casting, the vibration hammer can hammer the casting to apply vibration force to the casting, and the clamping mechanism comprises: a pair of clamping parts arranged oppositely; and the pair of air bag parts are arranged on the workbench and used for respectively fixing the pair of clamping parts, and the air bag parts can drive the pair of clamping parts to move in an opposite or deviating manner when air is filled or exhausted so as to enable the pair of clamping parts to clamp or release the casting together. According to the shakeout device provided by the invention, the clamping mechanism fixes the clamping part through the air bag part and clamps the casting in a soft supporting manner through the expansion of the air bag part, so that the casting can be prevented from being crushed or scratched, and the shakeout casting can have better appearance quality.

Description

Shakeout device

Technical Field

The invention relates to the technical field of sand casting, in particular to a shakeout device.

Background

After the sand casting is formed, a shakeout device is used to separate the casting from the molding sand (outer core) attached to the outer wall of the casting to obtain the casting.

The prior art generally selects a plunger type shakeout device, and the operation mode of the plunger type shakeout device is that a plurality of plungers are pressed against and inserted into an outer core of a casting so as to enable molding sand to be dispersed and peeled. In operation, the inserted link and the outer wall of the casting can form hard contact and hard friction, so that damage such as indentation, scratch and the like is generated on the surface of the casting, and the appearance quality of the casting is influenced.

Therefore, the above problems need to be solved.

Disclosure of Invention

The invention aims to provide a shakeout device, which can avoid damage to a casting during shakeout operation.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a shakeout device, includes workstation, clamping mechanism and the hammer that shakes, the workstation is used for holding the foundry goods of treating the shakeout, clamping mechanism is used for fixing the foundry goods, the hammer that shakes can the hammering the foundry goods in order to vibration force is applyed to the foundry goods, clamping mechanism includes:

a pair of clamping parts arranged oppositely;

the pair of air bag parts are arranged on the workbench and used for respectively fixing the pair of clamping parts, and the air bag parts can drive the pair of clamping parts to move in an opposite or deviating manner when air is filled or exhausted so as to enable the pair of clamping parts to clamp or release the casting together.

Preferably, the airbag portion includes at least one airbag, and when the number of airbags is two or more, the airbags are coaxially arranged in parallel.

Preferably, a plurality of knockout rods are uniformly distributed on the opposite clamping surfaces of the pair of clamping parts, and the clamping parts are abutted to the castings through the knockout rods.

Preferably, the hardness of the knockout pin is lower than the hardness of the casting.

Preferably, the clamping part is used for clamping the side wall of the casting to be matched with the shape of the casting.

Preferably, the clamping mechanism further includes a pair of bases for fixing the pair of airbag portions, respectively, and the pair of bases are detachably provided on the table.

Preferably, a plurality of groups of mounting holes are formed in the workbench and used for mounting the base.

Preferably, the shakeout apparatus further includes a transfer mechanism, and the movable end of the transfer mechanism is fixed with the vibration weight so that a spatial position of the vibration weight can be adjusted.

Preferably, the transfer mechanism includes:

the bracket is fixed with the workbench and extends along the vertical direction;

the first cross arm is fixed with the bracket and extends along a horizontal first direction;

a second cross arm slidably coupled to the first cross arm so as to be slidable in the first direction, the second cross arm extending in a second direction that is horizontal and perpendicular to the first direction;

and the mounting seat is slidably connected to the second cross arm so as to be capable of sliding along the second direction, and the vibration hammer is slidably connected with the mounting seat and capable of sliding along the vertical direction.

Preferably, the second crossbars are provided in pairs, each of the pair of second crossbars is provided with a pair of mounting seats, and each of the mounting seats is provided with the vibration hammer.

The invention has the beneficial effects that:

according to the shakeout device provided by the invention, the clamping mechanism fixes the clamping part through the air bag part and forms soft supporting clamping on the casting through the expansion of the air bag part, and due to the deformable and elastic properties of the air bag part, the clamping mechanism can prevent excessive pressure from being applied to the casting through self deformation, so that the clamping part is prevented from crushing the casting; meanwhile, when the sand falling operation is performed, the vibration hammer hammers the casting, the clamping part pressed on the casting through the air bag part can move synchronously along with the casting to a certain extent, namely, the clamping part can be always kept relatively fixed with the casting, and the phenomenon that the casting is scratched due to the fact that the pressing plate and the casting generate relative displacement due to the hammering of the vibration hammer is avoided.

Drawings

Fig. 1 is a front view of a shakeout apparatus in an embodiment of the present invention;

fig. 2 is a side view of a shakeout device in an embodiment of the invention.

In the figure:

100. casting;

1. a work table; 2. a clamping mechanism; 21. a clamping portion; 211. a knockout rod; 22. an air bag portion; 221. an air bag; 23. a base; 3. vibrating hammers; 4. a transfer mechanism; 41. a support; 42. a first cross arm; 43. a second cross arm.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The embodiment provides a shakeout device, can be applicable to the shakeout operation of the foundry goods that sand casting made, and it can avoid damaging the foundry goods when the shakeout operation, especially avoids clamping mechanism to crush or fish tail the foundry goods, makes the surface quality that has the preferred after the foundry goods shakeout.

Referring to fig. 1 and 2, the shakeout apparatus includes a table 1, a clamping mechanism 2 and a vibration hammer 3, the table 1 is used for receiving a casting 100 to be shakeout, the clamping mechanism 2 is used for fixing the casting 100, the vibration hammer 3 can hammer the casting 100 to apply a vibration force to the casting 100, the clamping mechanism 2 includes a pair of clamping portions 21 and a pair of air bag portions 22, the pair of air bag portions 22 are disposed on the table 1 and are used for respectively fixing the pair of clamping portions 21, and the air bag portions 22 can drive the pair of clamping portions 21 to move in a direction opposite to or away from each other when air is filled or exhausted, so that the pair of clamping portions 21 clamp or release the casting 100 together.

With the above structure, when the air bag portion 22 inflates, the pair of clamping portions 21 can gradually approach until they are pressed against the two opposite side walls of the casting 100 between the pair of clamping portions 21, thereby fixing the casting 100. Due to the deformable and elastic properties of the bag portion 22, it is able to prevent excessive pressure from being applied to the casting 100 by deforming itself, thereby preventing the clamping portion 21 from crushing the casting 100. Meanwhile, during the shakeout operation, the vibration hammer 3 hammers the casting 100, and the clamping part 21 which is pressed on the casting 100 through the air bag part 22 can move synchronously with the casting 100 to a certain extent, namely the clamping part 21 can be kept still relative to the casting 100 all the time, so that the phenomenon that the casting 100 is scratched due to the fact that the clamping part 21 and the casting 100 slide relatively due to the hammering of the vibration hammer 3 is avoided.

In this embodiment, the airbag portion 22 includes an airbag 221, and the airbag 22 may be a conventional industrial airbag, which generally includes an airbag body made of rubber, and metal plates disposed in parallel on both sides of the airbag body, and the two metal plates are vertically installed, wherein one metal plate is fixed to the base 23, and the other metal plate is used for fixing or directly regarding as the clamping portion 21, so that the clamping portion 21 can be moved toward the casting 100 when the airbag portion 22 is inflated.

It should be noted that, in other alternative embodiments, the airbag portion 22 may further include two or more airbags 221, and when the number of the airbags 221 is two or more, the airbags 221 are coaxially arranged in parallel, so that the airbag portion can have stable directions of inflation and deflation.

As shown in fig. 1, in the present embodiment, the outer wall of the casting 100 is substantially planar, and therefore the holding portion 21 is a flat plate-like plate body to fit the casting 100. Instead of or in addition to being adaptable to other shapes of the casting 100, the holding portion 21 is used to hold the side wall of the casting 100 and is adapted to the shape of the casting 100, such as a C-shaped structure, a V-shaped structure, etc.

In this embodiment, the clamping mechanism 2 further specifically includes a pair of bases 23, and the pair of bases 23 are used to fix the pair of bag portions 22, respectively. Specifically, the base 23 is fixed to the table 1.

Alternatively, a pair of bases 23 are each detachably provided on the table 1 in order to facilitate replacement of the air bag portion 22 or adjustment of the position of the air bag portion 22. For example, the worktable 1 may be provided with a plurality of sets of mounting holes arranged in a linear or array manner, each set of mounting holes being used for mounting the base 23, so that the purpose of adjusting the position of the air bag portion 22 is achieved by mounting the base 23 at each set of mounting holes, so that the clamping mechanism 2 can be adapted to castings 100 of different sizes.

In order to improve the shakeout effect, a plurality of shakeout bars 211 are uniformly distributed on the opposite clamping surfaces of the pair of clamping parts 21, and the clamping parts 21 are abutted to the casting 100 through the shakeout bars 211. In the process that the clamping portion 21 moves toward the casting 100 and clamps the casting 100, the sand-dropping rods 211 scattered on the clamping portion 21 can press the molding sand attached to the outside of the casting 100, so that the molding sand is peeled off directly or by the vibrating force of the vibration hammers 3.

It is understood that the knockout rod 211 can be considered as a part of the clamping portion 21, i.e., the knockout rod 211 can be of an integral structure with the clamping portion 21. Of course, the knockout rod 211 may be a rod-shaped structure that is fittingly mounted to the clamp portion 21 so that individual knockout rods 211 can be selectively replaced after being damaged.

To avoid the knockout bar 211 damaging the casting 100 when pressing against the casting 100, the material of the knockout bar 211 may be selected to be a material having a hardness lower than that of the casting 100. For example, the knockout bar 211 can be made of nylon, which is less hard than the common iron or aluminum alloy castings 100. Of course, the nylon knockout rod 211 is just one possible example, and other knockout rods 211 made of engineering plastics and the like that can be processed into a rod shape may be used.

The table 1 may be made of a rigid material such as metal, and may have a flat working surface to enable the clamping mechanism 2 to be mounted and the casting 100 to be stably placed. Meanwhile, optionally, the work table 1 may further have a hollowed-out work surface, and a sand storage hopper may be disposed below the work table 1 so as to collect the molding sand peeled off from the casting 100 during the shakeout operation.

The vibration hammer 3 can be specifically a pneumatic vibration hammer 3, the pneumatic vibration hammer 3 is configured with an air source capable of providing compressed air and corresponding air transmission pipelines, valves and the like, and the specific air transmission configuration structure is the prior art and is not described herein any more.

It should be noted that, in order to avoid structural defects in sand cast product 100 after cooling shrinkage, the mold is typically designed with a cavity for storing liquid metal in communication with the cavity of product 100 as a supplemental portion that is added above or to the side of product 100, and that is formed as a riser after product 100 is cooled and formed, which riser needs to be removed in a subsequent processing step. In this embodiment, in order to prevent the vibration hammer 3 from hammering the casting 100, the position of the vibration hammer 3 may be adjusted to correspond to the position of the riser of the casting 100 during the shakeout operation, and since the riser needs to be removed in the subsequent process, the appearance quality of the casting 100 is not affected by whether the hammered riser is damaged or not.

To achieve the above purpose of adjusting the spatial position of the vibration weight 3, in this embodiment, the shakeout apparatus may further include a transfer mechanism 4, and the vibration weight 3 is fixed to a movable end of the transfer mechanism 4.

Specifically, the transfer mechanism 4 includes a rack 41, a first arm 42, a second arm 43, and a mount. The bracket 41 is fixed to the table 1 and extends in the vertical direction. The first crossbar 42 is fixed to the bracket 41, such as in particular to the top end of the bracket 41, and extends in a horizontal first direction. The second crossbar 43 is slidably connected to the first crossbar 42 so as to be slidable in a first direction, and the second crossbar 43 extends in a second direction which is horizontal and perpendicular to the first direction. The mount is slidably connected to the second cross arm 43 so as to be slidable in the second direction, and the hammer 3 is slidably connected to the mount and slidable in the vertical direction. In the horizontal direction, the second cross arm 43 slides along the first cross arm 42, and in combination with the mounting seat sliding along the second cross arm 43, the two-dimensional plane movement of the mounting seat on the horizontal plane can be realized, and meanwhile, the vibration hammer 3 can also slide up and down along the mounting seat, so that the purposes of moving on a three-dimensional space and adjusting the position of the vibration hammer 3 can be realized.

In particular, the second cross arms 43 may be provided in pairs, each of the pair of second cross arms 43 is provided with a pair of mounting seats, and each of the mounting seats is provided with a vibration hammer 3, so that the casting 100 can be hammered by four vibration hammers 3 at the same time, thereby improving the shakeout operation efficiency. Certainly, in other alternative embodiments, the number of the second cross arms 43, the number of the mounting seats arranged on the second cross arms 43, and the number of the vibration hammers 3 arranged on the mounting seats may be one, two, or other numbers, an implementer may specifically set the parameters according to the volume and the number of the risers of the casting 100, the weight and the hammering force of the vibration hammers 3, and the specific process and manner of the setting do not need to pay creative labor, and therefore, no further description is given.

It should be noted that the mounting seat can be regarded as a separate structural member, which is slidably connected to the second crossbar 42 and to which the hammer 3 is slidably connected; alternatively, the mounting seat may also be considered as a part of the hammer 3, i.e. correspondingly, the hammer 3 itself has a telescopic structure that is telescopic to be able to move its hammer head in the vertical direction. Further, a screw-nut slide mechanism, a rack-and-pinion slide mechanism, or the like may be attached to each of the first and

second arms

42, 43 and the mount base, respectively, so as to drive the second arm 43, the mount base, and the hammer 3 to slide.

Illustratively, two lead screws are arranged on the first cross arm 42 at intervals along the length direction of the first cross arm, two end parts of the two lead screws are connected with the first cross arm 42 through positioning pieces such as bearings and bearing seats so as to be capable of rotating along the long axis direction of the lead screws, nuts are screwed on the two lead screws, the nuts bear weight and guide through slide rails arranged in parallel with the lead screws, and second cross arms 43 are arranged on the two nuts, so that the nuts can drive the second cross arms 43 to slide along the lead screws when the lead screws rotate.

In particular, the two screws may be driven by a power source such as a motor coupled to each other to adjust the position of the second traverse 43. Or, the opposite shaft ends of the two screw rods can be fixedly connected through the coupler and are respectively provided with threads in opposite directions, so that the two second cross arms 43 can move relatively or away from each other when the two screw rods synchronously rotate forwards or reversely.

The structure of the second cross arm 43 and the mounting seat can be set by referring to the structure of the first cross arm 42, and the specific structure and mounting manner of the rack and pinion sliding mechanism are also prior art and will not be described herein.

In summary, the shakeout operation process of the shakeout device provided by the embodiment is as follows:

firstly, the two vibrating hammers 3 are lifted by the transfer mechanism 4, and the air bag part 22 is in an uninflated state, so that a clamping space capable of placing the casting 100 to be shaked is formed between the vibrating hammers 3 and the clamping mechanism on the workbench 1.

Then, the casting 100 to be shaked is placed on the workbench 1, air is supplied to the air bag part 22 through the air source, and the air bag part 22 is gradually inflated to enable the shaked bars 211 of the two clamping parts 21 to be pressed against the casting 100, so that the casting 100 is clamped.

Subsequently, the positions of the two vibration hammers 3 are adjusted by the transfer mechanism 4 to respectively abut against the risers of the casting 100, and then the vibration hammers 3 are started to perform the shakeout operation.

Finally, after the molding sand on the casting 100 is removed, and the molding sand scattered on the worktable 1 is removed for the next sand shakeout operation.

It will be appreciated that when handling castings 100 having a more regular or more shakeout configuration, castings 100 may be hammered by vibratory hammers 3 alone, i.e., without clamping of castings 100 by clamping mechanisms 2.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The shakeout device is characterized by comprising a workbench (1), a clamping mechanism (2) and a vibration hammer (3), wherein the workbench (1) is used for bearing a casting (100) to be shakeout, the clamping mechanism (2) is used for fixing the casting (100), the vibration hammer (3) can hammer the casting (100) to apply vibration force to the casting (100), and the clamping mechanism (2) comprises:

a pair of clamping parts (21) arranged oppositely; and

and the pair of air bag parts (22) are arranged on the workbench (1) and are used for respectively fixing the pair of clamping parts (21), and the air bag parts (22) can drive the pair of clamping parts (21) to move towards or away from each other when air is filled or exhausted so as to enable the pair of clamping parts (21) to clamp or release the casting (100) together.

2. A shakeout device according to claim 1, wherein the air bag portion (22) includes at least one air bag (221), and when the number of the air bags (221) is two or more, the respective air bags (221) are coaxially juxtaposed.

3. The shakeout device according to claim 1, wherein a plurality of shakeout bars (211) are uniformly distributed on the opposite clamping surfaces of the pair of clamping portions (21), and the clamping portions (21) are abutted to the casting (100) through the shakeout bars (211).

4. A shakeout device according to claim 3, wherein the hardness of the shakeout bar (211) is lower than the hardness of the casting (100).

5. A shakeout device according to claim 1, characterised in that the clamping portions (21) are adapted to clamp the side walls of the casting (100) and to the outer shape of the casting (100).

6. A shakeout device according to claim 1, wherein the clamping mechanism (2) further comprises a pair of bases (23), the pair of bases (23) being for fixing the pair of bladder portions (22), respectively, the pair of bases (23) each being detachably provided on the table (1).

7. A shakeout device according to claim 6, wherein a plurality of sets of mounting holes are provided in the work bench (1), said mounting holes being adapted to mount the base (23).

8. Shakeout device according to claim 1, further comprising a transfer mechanism (4), the movable end of the transfer mechanism (4) being fixed with the vibro hammer (3) to enable adjustment of the spatial position of the vibro hammer (3).

9. Shakeout device according to claim 8, wherein the transfer mechanism (4) comprises:

a bracket (41) fixed to the table (1) and extending in a vertical direction;

a first cross arm (42) fixed to the bracket (41) and extending in a horizontal first direction;

a second crossbar (43) slidably connected to said first crossbar (42) so as to be slidable along said first direction, said second crossbar (43) extending along a second direction horizontal and perpendicular to said first direction;

and the mounting seat is slidably connected to the second cross arm (43) so as to be capable of sliding along the second direction, and the vibration hammer (3) is slidably connected with the mounting seat and capable of sliding along the vertical direction.

10. A shakeout device according to claim 9, wherein the second cross arms (43) are provided in pairs, a pair of the mounting seats being provided on each of the pair of second cross arms (43), the vibration hammers (3) being provided on each of the mounting seats.