CN212180550U

CN212180550U - Collapsibility detection device

Info

Publication number: CN212180550U
Application number: CN202020473898.5U
Authority: CN
Inventors: 杨林龙
Original assignee: Suzhou Mingzhi Technology Co Ltd
Current assignee: Suzhou Mingzhi Technology Co Ltd
Priority date: 2020-04-02
Filing date: 2020-04-02
Publication date: 2020-12-18
Anticipated expiration: 2030-04-02

Abstract

The utility model relates to a casting technical field discloses a collapsibility detection device. The collapsibility detection device is used for detecting collapsibility of a sand core in a sample and comprises a bearing platform, a hammering assembly and a driving assembly, wherein the bearing platform is used for bearing the sample; the hammering component comprises a hammering block, and the hammering block is positioned above the sample piece; the driving assembly is used for sucking and driving the hammering block to move upwards along the vertical direction and releasing the hammering block so that the hammering block hammers the sample piece. The collapsibility is calculated according to the weight of the sand core in the sample after the test, and the detection device is similar to the working principle of a sand vibrating machine in the hammering test of the sample, is more suitable for actual production operation and ensures that the collapsibility for detection has higher reference. And the adaptive sand core can be selected according to collapsibility so as to improve the quality of the cast product.

Description

Collapsibility detection device

Technical Field

The utility model relates to a casting technical field especially relates to a collapsibility detection device.

Background

The sand core is a material used for manufacturing a core in casting production, and is generally formed by mixing molding materials such as casting sand, a molding sand binder, an auxiliary additive and the like according to a certain proportion. The sand core has various indexes and evaluation methods. Collapsibility is one of the indexes, namely, an evaluation index of whether casting sand is easy to scatter after a casting is formed in the casting process, and the index has different requirements on different occasions. For example, some castings need long heat preservation time, and then cannot be easily dispersed, namely, the collapsibility requirement is lower; on the other hand, if rapid cooling is required, the collapsibility is required to be high and the casting sand is required to be easily removed in order to improve the production efficiency.

In the prior art, the sand core collapsibility test mode is to extrude the sand core, detect the comparison of the collapsibility sand weight and the original sand core, and the test mode has no correlation with the actual production operation. Or the sand core is heated, then mechanical vibration is carried out, the weight of the sand grains which are detected to be dispersed is compared with the original sand core, the heating mode is inconsistent with the heating condition of the sand core in the pouring process, so that the internal stress distribution condition is different, and the vibration of the sand core is inconsistent with the working principle of the sand vibrating machine. The methods for measuring collapsibility described above all deviate from actual production operations, resulting in lower referential of the measurement results.

Accordingly, there is a need for a collapsibility detection apparatus to solve the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

Based on above, the utility model aims at providing a collapsibility detection device has realized that the psammitolite collapsibility of laminating actual production operation detects, makes the data that collapsibility detected more accurate, more has the referential of production, selects the psammitolite of adaptation, improves cast product quality.

In order to achieve the purpose, the utility model adopts the following technical proposal:

a collapsibility detection apparatus for detecting collapsibility of a sand core within a sample, comprising:

the bearing table is used for bearing the sample piece;

a hammer assembly including a hammer block, the hammer block being located above the sample;

and the driving assembly is used for sucking and driving the hammering block to move upwards along the vertical direction and releasing the hammering block so that the hammering block hammers the sample piece.

Preferably, the device further comprises a bracket, wherein the bearing table is mounted on the bracket;

the bearing table is provided with an installation groove, and the sample piece is installed in the installation groove;

a discharge hole is formed in the bottom of the mounting groove and used for discharging collapsed sand grains in the sample piece;

and the support is provided with a through hole corresponding to the discharge hole.

Preferably, the hammer assembly further comprises a guide tube disposed in a vertical direction, the hammer block being vertically movable within the guide tube.

Preferably, the guide pipe is made of a magnetism-insulating material, and the outer surface of the guide pipe is provided with scale marks along the vertical direction.

Preferably, the hammering assembly further comprises a safety pin, the guide tube is provided with a safety pin mounting hole, and the safety pin can be arranged in the safety pin mounting hole in a penetrating mode.

Preferably, the driving assembly includes a driving unit and a connecting member, the driving unit is connected to the connecting member through a connecting rope, the driving unit can drive the connecting member to move in a vertical direction through the connecting rope, the connecting member is slidably disposed in the guide tube, and the connecting member can adsorb and release the hammering block.

Preferably, the driving assembly further includes two rollers disposed on the bracket at an interval, the connecting rope is wound on the rollers, the driving unit is located on a side of the first roller away from the second roller, and the connecting member is located on a side of the second roller away from the first roller.

Preferably, the drive unit is provided with a travel switch capable of controlling the elevation of the hammer block.

Preferably, the connecting piece is an electromagnet, and the hammering block is made of magnetic metal.

Preferably, the elevation height of the hammer block is set to 200mm to 300mm, the weight of the hammer block is 1.2kg to 2.4kg, the hammer force satisfies 50N to 150N, and the hammer block is a lower bainite structure.

The utility model has the advantages that:

the sample piece is arranged on the bearing table, the driving assembly releases the hammering block to hammer the sample piece, and the driving assembly drives the hammering assembly to move upwards along the vertical direction to reset for carrying out the next hammering test; use drive assembly to order about hammering piece upward movement, it is more laborsaving to need not manual operation, but also can guarantee that the height that hammering piece rises is unanimous basically, can guarantee that the dynamics of hammering at every turn is the same basically, guarantees the accuracy of test result. The collapsibility is calculated according to the weight of the sand core in the sample after the test, and the detection device is similar to the working principle of a sand vibrating machine in the hammering test of the sample, is more suitable for actual production operation and ensures that the collapsibility for detection has higher reference. And the adaptive sand core can be selected according to collapsibility so as to improve the quality of the cast product.

Drawings

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

Fig. 1 is a schematic structural diagram of a collapsibility detection apparatus according to an embodiment of the present invention.

The figures are labeled as follows:

1-a sample piece;

2-a bearing platform; 21-a discharge hole;

3-a hammering assembly; 31-a hammer block; 32-a guide tube; 33-a shear pin;

4-a drive assembly; 41-a drive unit; 42-a connector; 43-connecting rope; 44-a roller;

5-a bracket; 51-through holes.

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, detachably 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. 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", "left", "right", and the like are used in the orientation or positional relationship 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 specific orientation, be constructed in a specific orientation, and be operated, 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 sand core is a material used for manufacturing the sand core in casting production, the prior sand core collapsibility test mode is to extrude the sand core, the weight of the collapsibility sand is detected to be compared with the original sand core, and the test mode has no correlation with actual production operation. Or the sand core is heated, then mechanical vibration is carried out, the weight of the sand grains which are detected to be dispersed is compared with the original sand core, the heating mode is inconsistent with the heating condition of the sand core in the pouring process, so that the internal stress distribution condition is different, and the vibration of the sand core is inconsistent with the working principle of the sand vibrating machine. The methods for measuring collapsibility described above all deviate from actual production operations, resulting in lower referential of the measurement results.

To solve the above problem, the present embodiment provides a collapsibility detection apparatus for detecting collapsibility of a sand core in a sample 1, as shown in fig. 1.

It should be particularly noted that the manufacturing process of the sample 1 detected in this embodiment is as follows: and combining the sand core to be detected and the two outer skin sand cores to form a sand bag, and removing the two outer skin sand cores after pouring the sand bag to form the sample 1. The sample 1 is provided with a cavity with a downward opening, the part of the sand core to be detected is positioned in the cavity, the sample 1 is cast and molded on the outer side of the sand core to be detected, the sample 1 is manufactured by truly simulating actual production operation, and the experimental result is more referential. When the sample 1 is hammered, sand grains to be detected to be broken of the sand core are discharged through the opening. The collapsibility is calculated according to the weight of the sand core to be detected after collapsibility, and the sample 1 obtained by the actual production operation is truly simulated by the sample 1, so that the measurement result is more accurate and more referable.

Specifically, the collapsibility detection apparatus includes a carriage 2, a hammer assembly 3, a drive assembly 4, and a bracket 5. The sample piece 1 is arranged on the bearing table 2, the bearing table 2 is provided with an installation groove matched with the bottom shape of the sample piece 1, and the sample piece 1 is arranged in the installation groove; the bottom of the mounting groove is provided with a discharge hole 21, and the discharge hole 21 is used for discharging the collapsing sand grains of the sample 1. The bearing table 2 is arranged on a bracket 5, a through hole 51 corresponding to the discharge hole 21 is arranged on the bracket 5, and the dispersed sand grains are discharged through the discharge hole 21 and the through hole 51.

Hammering assembly 3 includes hammering piece 31 and stand pipe 32, and stand pipe 32 sets up along vertical direction, and hammering piece 31 sets up in stand pipe 32 with sliding, and hammering piece 31 can be followed vertical direction and moved in stand pipe 32. The movement track of the hammering block 31 can be ensured to be consistent and stable, and the test precision can be ensured to a greater extent. Preferably, the guide pipe 32 is the magnetic insulation material, and the guide pipe 32 surface is equipped with along vertical direction's scale mark, and the operating personnel of being convenient for knows the lift condition of hammering piece 31, ensures that the height that rises at every turn is unanimous.

Further, when a power failure occurs, the adsorbed hammer block 31 falls off, which is likely to cause a safety accident, so that the hammer assembly 3 further includes a safety pin 33. Be provided with the safety pin mounting hole on the stand pipe 32, when hammering piece 31 is adsorbed and rises to predetermineeing the height, the safety pin mounting hole is located the bottom of hammering piece 31, and safety pin 33 wears to locate in the safety pin mounting hole to prevent that hammering piece 31 from dropping and causing the incident, improve the security of device. The shear pin is removed prior to the hammering operation.

In the present embodiment, it is preferable that the height of the hammer block 31 is set to 200mm to 300mm, the weight is set to 1.2kg to 2.4kg, the hammering force is set to 50N to 150N, and the hammer block 31 is a lower bainite structure. In other embodiments, the weight, height and material of the hammer block 31 can be adjusted according to different test requirements.

It should be particularly noted that the driving assembly 4 includes a driving unit 41, a connecting member 42, a connecting rope 43 and rollers 44, two ends of the connecting rope 43 are respectively connected to the output end of the driving unit 41 and the connecting member 42, two rollers 44 are horizontally disposed at intervals on the top of the bracket 5, the connecting rope 43 is wound on the rollers 44, the driving unit 41 is disposed on one side of the first roller 44 away from the second roller 44, and the driving assembly 4 is disposed in such a way as to reduce the height of the whole device. The connecting member 42 is located on a side of the second roller 44 remote from the first roller 44, and the connecting member 42 is slidably disposed on the guide tube 32. Specifically, the connecting member 42 is an electromagnet, the material of the hammer block 31 is a metal with magnetism, and the guide tube 32 of the hammer block 31 is a magnetism-insulating material. After the hammer block 31 is sucked by the connecting piece 42, the driving unit 41 drives the connecting piece 42 to carry the hammer block 31 to move upwards through the connecting rope 43, and after the hammer block 31 is lifted to a certain height, the connecting piece 42 releases the hammer block 31, so that the hammer block 31 falls down to perform a hammer test.

In the present embodiment, the driving unit 41 is preferably an air cylinder. The lateral wall of support 5 is provided with the angle steel that two intervals set up, and two angle steels form the recess that holds the cylinder, and the recess is fixed the cylinder. The end of the connecting rope 43 far from the connecting piece 42 is connected to the telescopic rod of the cylinder, the cylinder contracts the telescopic rod to drive the connecting piece 42 to move in the guide pipe 32 along the vertical direction, and the cylinder extends out of the telescopic rod connecting piece 42 to move downwards under the action of self gravity. In other embodiments, the driving unit 41 may also be a motor, the motor is mounted on the bracket 5, a rope winding wheel is disposed on an output shaft of the motor, one end of the connecting rope 43 away from the connecting piece 42 is fixed on the rope winding wheel, the motor drives the rope winding wheel to rotate, the rope winding wheel can drive the connecting piece 42 to move upwards, the motor rotates reversely to enable the rope winding wheel to release the connecting rope 43, and the connecting piece 42 moves downwards under the action of self gravity. Preferably, the driving unit 41 is provided with a travel switch, and in this embodiment, the air cylinder is provided with a travel switch, and the travel switch can control the telescopic length of the telescopic rod of the air cylinder, so as to control the rising length of the connecting piece 42 through the connecting rope 43, thereby ensuring that the hammering block 31 reaches the preset height. The principle that the telescopic length of the telescopic rod is controlled by the travel switch arranged on the cylinder is a mature technology in the prior art, and is not repeated herein.

The sample 1 is mounted on the bearing table 2, the driving unit 41 drives one end of the connecting rope 43 connected to the driving unit 41 to move upwards, the connecting piece 42 moves downwards under the action of self gravity, the hammering block 31 is sucked after the connecting piece reaches the bottom, the driving assembly 4 drives one end of the connecting rope 43 connected to the driving unit 41 to move downwards, the connecting piece 42 and the hammering block 31 are driven to move upwards along the guide pipe 32, and when the hammering block 31 reaches a preset height, the connecting piece 42 releases the hammering block 31 to hammer the sample 1; the drive unit 41 then again draws and drives the hammer block 31 upwardly through the connecting cord 43 and the connecting piece 42, again hammering the sample 1. The sample 1 on the carrier table 2 is hammered a plurality of times by the hammer block 31 located above the carrier table 2. The collapsibility is calculated according to the weight of the sand core in the sample 1 after the test, and the detection device is similar to the working principle of a sand vibrating machine in the hammering test of the sample 1, is more suitable for actual production operation, and ensures that the collapsibility for detection has higher reference. And the adaptive sand core can be selected according to collapsibility so as to improve the quality of the cast product.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. A collapsibility detection apparatus for detecting collapsibility of a sand core within a sample (1), comprising:

a carrying table (2) for carrying the sample piece (1);

a hammer assembly (3) comprising a hammer block (31), the hammer block (31) being located above the sample (1);

and the driving assembly (4) is used for sucking and driving the hammering block (31) to move upwards along the vertical direction and releasing the hammering block (31) so that the hammering block (31) hammers the sample piece (1).

2. The collapsibility detection apparatus of claim 1, further comprising a bracket (5), said carrier (2) being mounted on said bracket (5);

the bearing table (2) is provided with an installation groove, and the sample piece (1) is installed in the installation groove;

a discharge hole (21) is formed in the bottom of the mounting groove, and the discharge hole (21) is used for discharging collapsed sand grains in the sample piece (1);

the support (5) is provided with a through hole (51) corresponding to the discharge hole (21).

3. The collapsibility detection apparatus of claim 2, wherein the hammer assembly (3) further comprises a guide tube (32), the guide tube (32) being disposed in a vertical direction, the hammer block (31) being movable in the vertical direction within the guide tube (32).

4. The collapsibility detection apparatus according to claim 3, wherein the guide tube (32) is made of a magnetic insulating material, and the outer surface of the guide tube (32) is provided with scale marks along a vertical direction.

5. The collapsibility detection apparatus of claim 4, wherein the hammer assembly (3) further comprises a safety pin (33), the guide tube (32) being provided with a safety pin mounting hole, the safety pin (33) being able to be passed through the safety pin mounting hole.

6. The collapsibility detection apparatus according to claim 3, wherein the driving assembly (4) comprises a driving unit (41) and a connector (42), the driving unit (41) is connected to the connector (42) by a connecting rope (43), the driving unit (41) can drive the connector (42) to move in a vertical direction by the connecting rope (43), the connector (42) is slidably disposed in the guide tube (32), and the connector (42) can absorb and release the hammering block (31).

7. The collapsibility detection apparatus according to claim 6, wherein the driving assembly (4) further comprises two rollers (44) spaced apart from each other on the bracket (5), the connecting rope (43) is wound around the rollers (44), the driving unit (41) is located on a side of a first one of the rollers (44) away from a second one of the rollers (44), and the connecting member (42) is located on a side of the second one of the rollers (44) away from the first one of the rollers (44).

8. The collapsibility detection apparatus according to claim 7, wherein the drive unit (41) is provided with a stroke switch capable of controlling a rising height of the hammer block (31).

9. The collapsibility detection apparatus of claim 7, wherein the connector (42) is an electromagnet and the hammer block (31) is made of a magnetic metal.

10. The collapsibility detection apparatus according to claim 7, wherein a rising height of the hammer block (31) is set to 200mm to 300mm, a weight of the hammer block (31) is 1.2kg to 2.4kg, a hammer force satisfies 50N to 150N, and the hammer block (31) is a lower bainite structure.