JP7035841B2 - Wire mesh supply device - Google Patents

Description

The present invention relates to a wire mesh supply device that supplies the wire mesh to a wire mesh installation jig for installing the wire mesh at the sprue of the low pressure casting device.

A wire mesh installed at the sprue of a low-pressure casting device is known (see Patent Document 1). When installing the wire mesh at the sprue of the low-pressure casting device, the wire mesh is attached to the wire mesh installation jig, and the wire mesh is installed at the sprue of the low-pressure casting device using this wire mesh installation jig.

Japanese Unexamined Patent Publication No. 2005-131658

However, since the work of attaching this wire mesh to the wire mesh installation jig is a manual work, human error such as incorrect number of wire meshes attached to the wire mesh installation jig is likely to occur, which may lead to a decrease in work efficiency. There is.

The present invention has been made to solve such a problem, and provides a wire mesh supply device capable of reducing an error in the number of wire meshes attached to a wire mesh installation jig and improving work efficiency. The main purpose is to do.

One aspect of the present invention for achieving the above object is
A wire mesh supply device that supplies the wire mesh to a wire mesh installation jig for installing a conical wire mesh at the sprue of the low-pressure casting device.
A holding means for holding a plurality of the wire meshes in the vertical direction,
A moving means for horizontally moving the holding means from the first position to the second position,
Wire mesh extraction means provided at the lower end of the holding means, from a plurality of wire meshes held by the holding means, the wire mesh at the lowermost end is taken out at the second position, and the taken out wire mesh is supplied to the wire mesh installation jig. And, with
The wire mesh taking-out means is provided so as to be overlapped with a holding portion having an opening for holding the lowermost wire mesh at the first position and allowing the wire mesh to pass through at the second position, and a holding portion formed on the holding portion. It has a separating portion for separating the lowermost wire mesh from the plurality of wire meshes at the second position.
The thickness of the separated portion is set to be smaller than the distance between the outer edges on the bottom side of the adjacent wire meshes when the wire meshes are stacked.
An opening is formed in the separation portion, and the width of the opening is formed so as to become narrower from the first position toward the second position.
The bottom edge of the wire mesh at the lowermost end held by the holding means is sandwiched between the openings of the separation portion.
The side surface of the opening of the separation portion that sandwiches the bottom side outer edge of the wire mesh is inclined corresponding to the inclination of the surface of the wire mesh.
When the moving means moves the holding means from the first position to the second position, the outer edge on the bottom side of the wire mesh at the lowermost end is sandwiched and compressed by the opening of the separation portion, and the wire mesh is compressed. At the second position, it passes through the opening of the holding portion, is taken out downward, and is supplied to the wire mesh installation jig.
It is a wire mesh supply device characterized by this.

According to the present invention, it is possible to provide a wire mesh supply device capable of reducing the number of wire meshes attached to the wire mesh installation jig by mistake and improving work efficiency.

It is sectional drawing which shows an example of the schematic structure of the low pressure casting apparatus. It is a perspective view which shows the schematic structure of the wire mesh supply device which concerns on one Embodiment of this invention. (A) It is a top view which looked at the holding plate from above. (B) It is a top view which looked at the separation plate from above. (C) It is a figure which shows the state which put the separation plate on the holding plate. It is a figure which shows the state which the wire mesh of the lowermost end moves from the 1st position to the 2nd position, and is taken out downward. It is a top view which shows the state which the outer edge on the bottom side of the wire mesh of the lowermost end is sandwiched by an opening and is compressed. It is a figure which shows the compressive force acting on the wire mesh, and the downward force. It is the figure which partially enlarged the cross section of the opening of a separation plate. It is a figure which shows the plate thickness of the separation plate, and the distance between the bottom side outer edge of the adjacent wire mesh when the wire mesh is overlapped. It is a flowchart which shows the flow of the wire mesh supply method by the wire mesh supply apparatus which concerns on one Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The wire mesh supply device according to the embodiment of the present invention supplies the wire mesh to the wire mesh installation jig for installing the conical wire mesh at the sprue of the low pressure casting device. The wire mesh is configured as, for example, a filter for removing oxidation. The wire mesh is composed of, for example, a pattern in which a wire of about 0.4 mm is woven in a conical shape.

FIG. 1 is a cross-sectional view showing an example of a schematic configuration of a low-pressure casting apparatus 1. The low-pressure casting apparatus 1 has a molten metal holding furnace 2 and a mold 4 (mold) forming the cavity 3, and the inner chamber 5 and the cavity 3 of the molten metal holding furnace 2 pass through the stalk 6 and the intermediate stalk 7. It is communicated.

The molten metal holding furnace 2 is a container for storing the molten metal M, and is heated from the outside in order to prevent the molten metal M from cooling and solidifying in the inner chamber 5. The molten metal M stored in the molten metal holding furnace 2 is pressurized by the compressed gas.

The upper end of the opening of the molten metal holding furnace 2 is closed by the furnace lid 8. A through hole 9 is formed at a position corresponding to substantially the center of the furnace lid 8. An annular step portion 10 is provided in the through hole 9, and a large diameter portion 11 of the stalk 6 is placed in the annular step portion 10. The stalk 6 is a pipe body having a long small diameter portion 12 whose tip is immersed in the molten metal M and a large diameter portion 11 projecting in a flange shape.

The intermediate stalk 7 arranged above the stalk 6 has a flange portion 14 having a diameter substantially corresponding to the diameter of the large diameter portion 11 of the stalk 6, and a tapered portion 15 having a diameter expanded outward in the radial direction from the flange portion 14. And have. Inside the intermediate stalk 7, an intermediate chamber 16 is provided from the flange portion 14 to the tapered portion 15.

The mold 4 has a lower mold 20 disposed above the intermediate stalk 7, two side molds 21, a rear surface mold 22, a front mold (not shown), and an upper mold 23. The lower mold 20 is formed with a plurality of sprues 24 for filling the cavity 3 with the molten metal M. A conical wire mesh 25 is installed in each sprue 24.

In the present embodiment, the wire mesh 25 is attached to the wire mesh installation jig 27, and the wire mesh 25 is installed at each of the above-mentioned sprues 24 by using the wire mesh installation jig 27. FIG. 2 is a perspective view showing a schematic configuration of the wire mesh supply device according to the present embodiment.

The wire mesh supply device 30 according to the present embodiment has a pedestal main body 31, a pair of magazines 32 for holding the wire mesh 25, a moving unit 33 for moving each magazine 32, and a pair of wire mesh extraction for taking out the wire mesh 25 of each magazine 32. A unit 34 and a jig holding unit 35 for holding the wire mesh installation jig 27 are provided.

The magazine 32 is a specific example of the holding means. The magazine 32 is formed in a cylindrical shape. The magazine 32 holds a plurality of (for example, 40) wire meshes 25 stacked in a cylinder in the vertical direction. At the upper end of the plurality of stacked wire mesh 25, a weight 36 for pressing the wire mesh 25 downward is provided.

The moving portion 33 is provided on the pedestal main body 31 and moves the magazine 32 horizontally in the front-rear direction (direction from the first position P1 to the second position P2). The moving portion 33 has, for example, an operating lever portion 37 operated by the user in the front-rear direction, and a supporting portion 38 connected to the operating lever portion 37 to support each magazine 32.

The user can move each magazine 32 supported by the support portion 38 in the front-rear direction by moving the operation lever portion 37 in the front-rear direction. The moving unit 33 may be configured to move the magazine 32 by using an actuator such as a motor.

By the way, as described above, the magazine 32 holds a plurality of wire meshes 25 stacked in the cylinder in the vertical direction.
Conventionally, when a wire mesh is taken out from a magazine and attached to a wire mesh installation jig, adjacent wire meshes may be caught and a plurality of wire meshes may overlap and be taken out from the magazine. Further, when the wire meshes are taken out in a state of being overlapped in this way, it is difficult to judge the appearance, so that the wire meshes in the overlapped state may be attached to the wire mesh installation jig as it is. As described above, human error such as an incorrect number of wire meshes attached to the wire mesh installation jig is likely to occur, which may lead to a decrease in work efficiency.

On the other hand, the wire mesh supply device 30 according to the present embodiment is provided at the lower end of the magazine 32, and the wire mesh 25 at the lowermost end is taken out from the plurality of wire mesh 25 held in the magazine 32, and the taken out wire mesh 25 is used. A wire mesh extraction unit 34 for supplying to the wire mesh installation jig 27 is provided. As a result, only the wire mesh 25 at the lowermost end can be taken out from the magazine 32 and supplied to the wire mesh installation jig 27. Therefore, it is possible to reduce the number of wire mesh 25s to be attached to the wire mesh installation jig 27 by mistake, and it is possible to improve work efficiency.

The wire mesh extraction unit 34 is a specific example of the wire mesh extraction means. The wire mesh taking-out portion 34 has a plate-shaped holding plate 39 fixed to the pedestal main body 31 and a plate-shaped separation plate 40 provided on the holding plate 39. The holding plate 39 and the separation plate 40 are configured as separate bodies, but the present invention is not limited to this, and the holding plate 39 and the separation plate 40 may be integrally configured.

FIG. 3A is a top view of the holding plate as viewed from above. The holding plate 39 is a specific example of the holding portion. The holding plate 39 is formed in a rectangular shape and a plate shape. The holding plate 39 holds the wire mesh 25 at the lowermost end in the magazine 32 at the first position P1. The holding plate 39 is formed with a rectangular opening 391 for passing the wire mesh 25 at the lowermost end from the magazine 32 at the second position P2.

FIG. 3B is a top view of the separation plate as viewed from above. The separation plate 40 is a specific example of the separation portion. The separation plate 40 is formed in a rectangular shape and a plate shape. The separation plate 40 is provided so as to be overlapped on the holding plate 39.

The separation plate 40 separates and takes out the wire mesh 25 at the lowermost end from the plurality of wire mesh 25 held in the magazine 32. An opening 401 is formed in the separation plate 40. The opening 401 is composed of a portion 402 having the same width and a tapered portion 403 whose width gradually narrows in the direction (forward) from the first position P1 to the second position P2. ing.

FIG. 3C is a diagram showing a state in which the separation plate is stacked on the holding plate. The moving unit 33 moves the wire mesh 25 in the magazine 32 from the first position P1 to the second position P2. At the first position P1, the lowermost wire mesh 25 is placed and held on the holding plate 39. As shown in FIG. 4, the wire mesh 25 at the lowermost end moves from the first position P1 to the second position P2. Then, the wire mesh 25 at the lowermost end passes through the opening 391 of the holding plate 39 at the second position P2 and is taken out downward.

Next, a method of taking out only the lowermost wire mesh 25 from the magazine 32 and supplying it to the wire mesh installation jig 27 will be described in detail. FIG. 5 is a top view showing a state in which the bottommost outer edge of the wire mesh at the lowermost end is sandwiched between the openings and compressed. As shown in FIG. 5, at the first position P1, the lowermost wire mesh 25 in the magazine 32 is held on the holding plate 39 without being deformed.

The width of the tapered portion 403 of the opening 401 of the separation plate 40 is formed so as to become narrower in the direction from the first position P1 to the second position P2. Therefore, the bottommost outer edge 251 of the wire mesh 25 at the lowermost end is gradually and greatly compressed from the first position P1 to the second position P2 by the tapered portion 403 of the opening 401 of the separation plate 40. At the second position P2, the amount of compression is maximized.

Further, as shown in FIG. 6, the side surface 404 of the tapered portion 403 of the opening 401 is inclined corresponding to the inclination of the surface (cross section) of the wire mesh 25. As a result, when the compressive force F1 acts on the wire mesh 25, the downward force F2 acts on the wire mesh 25. By this force F2, the wire mesh 25 at the lowermost end passes through the opening 391 of the holding plate 39 at the second position P2 and falls downward and is taken out. At the second position P2, the compression amount of the bottom side outer edge 251 of the wire mesh 25 becomes the maximum and the compressive force becomes the maximum, so that the maximum force F2 acts downward on the wire mesh 25. Therefore, at the second position P2, only the wire mesh 25 at the lowermost end can be reliably taken out.

FIG. 7 is a partially enlarged view of the cross section of the opening of the separation plate. As shown in FIG. 7A, the side surface 404 of the tapered portion 403 of the opening 401 is inclined at 60 ° ± 10 ° according to the inclination of the surface of the wire mesh 25, for example. As shown in FIG. 7B, the side surface 405 of the same width portion 402 of the opening 401 is vertical.

The width of the tapered portion 403 of the separation plate 40 and the inclination of the side surface 404 are set experimentally as values when the wire mesh 25 is optimally taken out at the second position P2. For example, if the width of the tapered portion 403 of the separation plate 40 is reduced, the compressive force F1 with respect to the wire mesh 25 is further increased, and the downward force F2 is also increased.

As shown in FIG. 8, the plate thickness d1 of the separation plate 40 is set to be smaller than the distance d2 (for example, about d2 = 1.5 mm) between the bottom side outer edges 251 of the adjacent wire mesh 25 when the wire mesh 25 is stacked. Has been done. Therefore, only the bottom side outer edge 251 of the wire mesh 25 at the lowermost end comes into contact with and is sandwiched by the side surface 404 of the tapered portion 403 of the opening 401, and is compressed. Therefore, at the second position P2, only the wire mesh 25 at the lowermost end passes through the opening 391 of the holding plate 39 and is taken out downward.

Since the wire mesh 25 located on the wire mesh 25 at the lowermost end does not come into contact with the side surface 404 of the tapered portion 403 of the opening 401 of the separation plate 40, the wire mesh 25 is not deformed and is placed on the separation plate 40 at the first position P1. Will move from to the second position P2. In this way, only the lowermost wire mesh 25 is surely separated from the wire mesh 25 stacked in the magazine 32.

As shown in FIG. 2, the wire mesh installation jig 27 has a pair of jig main bodies 271 to which the wire mesh 25 is attached, and a jig support portion 272 that supports each jig main body 271. The jig main body 271 is formed in a shape corresponding to the wire mesh 25 so that the wire mesh 25 dropped from the upper magazine 32 is appropriately held. The jig main body 271 may magnetically hold the wire mesh 25 by magnetic force. The jig support portion 272 is provided with a handle 273 that can be gripped by the user. Using this wire mesh installation jig 27, a pair of wire mesh 25 can be set for the pair of sprues 24 at the same time.

The jig holding portion 35 is provided on the pedestal main body 31 so as to be movable in the vertical direction. The jig holding portion 35 and the operating lever portion 37 of the moving portion 33 are connected via a wire 41, a pulley 42, and the like. As a result, the jig holding portion 35 and the operating lever portion 37 of the moving portion 33 are interlocked with each other.

For example, the operation lever portion 37 moves forward, and the magazine 32 moves from the first position P1 to the second position P2. At the same time, the jig holding portion 35 is pulled up by the wire 41, and the jig main body 271 of the wire mesh installing jig 27 held by the jig holding portion 35 approaches the wire mesh 25 in the magazine 32. At this time, the wire mesh 25 at the lowermost end in the magazine 32 passes through the opening 391 of the holding plate 39, falls downward, and naturally fits into the jig body 271 of the approaching wire mesh installation jig 27. As a result, the wire mesh 25 can be automatically attached to the wire mesh installation jig 27.

When the user releases the operation lever portion 37, the jig holding portion 35 and the wire mesh installation jig 27 are lowered by their own weight. The user can easily remove the wire mesh installation jig 27 to which the wire mesh 25 is attached from the jig holding portion 35 that has been lowered and returned to the original position. On the other hand, the operation lever portion 37 and the magazine 32 are pulled by the jig holding portion 35 and the wire mesh installation jig 27 via the wire 41, and return from the second position P2 to the original first position P1.

The jig holding portion 35 and the operating lever portion 37 of the moving portion 33 are configured to be interlocked with each other via a wire 41, a pulley 42, or the like, but the present invention is not limited to this. For example, the jig holding portion 35 may be configured to be raised and lowered by an actuator such as a motor.

Next, the operation flow of the wire mesh supply device 30 according to the present embodiment will be described. FIG. 9 is a flowchart showing a flow of a wire mesh supply method by the wire mesh supply device according to the present embodiment. The user moves the operation lever portion 37 forward (step S101), and moves the magazine 32 from the first position P1 to the second position P2 (step S102). At the same time, the jig holding portion 35 is pulled up by the wire 41, and the wire mesh setting jig 27 held by the jig holding portion 35 approaches the wire mesh 25 in the magazine 32 (step S103).

When the magazine 32 moves from the first position P1 to the second position P2, the bottommost outer edge 251 of the wire mesh 25 at the lowermost end is compressed by the tapered portion 403 of the opening 401 of the separation plate 40, and the lowermost end thereof is compressed by the compressive force. A force F2 acts downward on the wire mesh 25 of the above. The wire mesh 25 at the lowermost end in the magazine 32 passes through the opening 391 of the holding plate 39, falls downward, and is naturally attached to the approaching wire mesh installation jig 27 (step S104).

When the user releases the operation lever portion 37 (step S105), the jig holding portion 35 and the wire mesh installation jig 27 are lowered by their own weight (step S106). The operation lever portion 37 and the magazine 32 are pulled by the jig holding portion 35 and the wire mesh installation jig 27 via the wire 41, and return from the second position P2 to the original first position P1 (step S107). The user removes the wire mesh installation jig 27 from the jig holding portion 35, and installs the wire mesh 25 at each sprue 24 using the wire mesh installation jig 27 (step S108). The wire mesh installation jig 27 is installed in the jig holding portion 35 again (step S109).

As described above, in the present embodiment, the wire mesh extraction unit 34 holds the wire mesh 25 at the lowermost end at the first position P1, and the holding plate 39 having an opening 391 through which the wire mesh 25 passes at the second position P2. It has a separation plate 40 which is provided so as to be overlapped on the holding plate 39 and separates the wire mesh 25 at the lowermost end from the plurality of wire mesh 25 at the second position P2. The thickness of the separation plate 40 is set to be smaller than the distance between the bottom side outer edges 251 of the adjacent wire mesh 25 when the wire mesh 25 is stacked. An opening 401 is formed in the separation plate 40, and the width of the opening 401 is formed so as to become narrower in the direction from the first position P1 to the second position P2. The side surface of the tapered portion 403 of the opening 401 of the separation plate 40 that sandwiches the bottom side outer edge 251 of the wire mesh 25 is inclined corresponding to the inclination of the surface of the wire mesh 25. The moving portion 33 moves the magazine 32 from the first position P1 to the second position P2, so that the outer edge 251 on the bottom side of the wire mesh 25 at the lowermost end is sandwiched and compressed by the opening 401 of the tapered portion 403 of the separation plate 40. , The wire mesh 25 passes through the opening 391 of the holding plate 39 at the second position P2, is taken out downward, and is supplied to the wire mesh installation jig 27. As a result, only the wire mesh 25 at the lowermost end can be taken out from the magazine 32 and supplied to the wire mesh installation jig 27. Therefore, it is possible to reduce the number of wire mesh 25s to be attached to the wire mesh installation jig 27 by mistake, and it is possible to improve work efficiency.

The present invention is not limited to the above embodiment, and can be appropriately modified without departing from the spirit. For example, the wire mesh supply device 30 according to the above embodiment is configured to include two sets of magazines 32 and a wire mesh extraction unit 34, but is not limited thereto. The wire mesh supply device 30 may be configured to include a set of magazines 32 and a wire mesh extraction unit 34, or may be configured to include three or more sets of magazines 32 and a wire mesh extraction unit 34.

1 Low-pressure casting equipment, 4 molds, 24 sprue, 25 wire mesh, 27 wire mesh installation jig, 30 wire mesh supply device, 31 pedestal body, 32 magazine, 33 moving part, 34 wire mesh extraction part, 35 jig holding part, 37 operation lever Jig, 38 Support, 39 Holding Plate, 40 Separation Plate, 41 Wire, 42 Pulley, 251 Bottom Side Outer Edge, 391 Opening, 401 Opening, 402 Same Width, 403 Tapered, 404 Side, 405 Side

Claims (1)

A wire mesh supply device that supplies the wire mesh to a wire mesh installation jig for installing a conical wire mesh at the sprue of the low-pressure casting device.
A holding means for holding a plurality of the wire meshes in the vertical direction,
A moving means for horizontally moving the holding means from the first position to the second position,
Wire mesh extraction means provided at the lower end of the holding means, from a plurality of wire meshes held by the holding means, the wire mesh at the lowermost end is taken out at the second position, and the taken out wire mesh is supplied to the wire mesh installation jig. And, with
The wire mesh taking-out means is provided so as to be overlapped with a holding portion having an opening for holding the lowermost wire mesh at the first position and allowing the wire mesh to pass through at the second position, and a holding portion formed on the holding portion. It has a separating portion for separating the lowermost wire mesh from the plurality of wire meshes at the second position.
The thickness of the separated portion is set to be smaller than the distance between the outer edges on the bottom side of the adjacent wire meshes when the wire meshes are stacked.
An opening is formed in the separation portion, and the width of the opening is formed so as to become narrower from the first position toward the second position.
The bottom edge of the wire mesh at the lowermost end held by the holding means is sandwiched between the openings of the separation portion.
The side surface of the opening of the separation portion that sandwiches the bottom side outer edge of the wire mesh is inclined corresponding to the inclination of the surface of the wire mesh.
When the moving means moves the holding means from the first position to the second position, the outer edge on the bottom side of the wire mesh at the lowermost end is sandwiched and compressed by the opening of the separation portion, and the wire mesh is compressed. At the second position, it passes through the opening of the holding portion, is taken out downward, and is supplied to the wire mesh installation jig.
A wire mesh supply device characterized by that.

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