JP3025432B2 - Gate system removal device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for removing a gate portion such as a gate, a runner, a riser, and a deeper which are solidified integrally with a casting.

[0002]

2. Description of the Related Art A cast product obtained by unmolding a mold has a solid state in a sprue system such as a sprue, a runner, a riser, and a fryer. Therefore, it is necessary to remove unnecessary gate portions from the product, and these gate portions have conventionally been cut off or scraped off.

[0003]

However, for example, when manufacturing various types of cylinder blocks in a casting line, the shape of the gate section differs depending on the type of casting.
The removal work depends largely on human labor. In addition, it is necessary to pay close attention to the work in order not to drop fragments such as a hot water and a fry hit by a hammer or the like into a cylinder bore or the like, and the work efficiency is not good. For this reason, the connection with the next step is poor, and in addition to the removal of the gate section, automation of a series of post-treatment steps including slow cooling, deburring, shot blasting, and the like has been hindered.

An object of the present invention is to solve the above-mentioned problem, and it is an object of the present invention to mechanize an operation of removing a gate section of a cast product after separating a mold.

[0005]

Means for Solving the Problems To solve the problems, the following gating system removing apparatus was created. That is, the invention of claim 1 is solidified integrally with the casting.
Gating system parts such as gates, runners, hot springs, and deep-fried water from the casting
An apparatus for removing, a gripping mechanism for gripping the casting
And a body part of the casting and hot water extending along the body part
The opening of the sprue member between the mouth and the second
(1) a breaking mechanism and a pressing member pressed against a runner of the casting;
A second take-off mechanism for breaking the runner and casting the cast product
A transport mechanism that transports the product in a state where it is turned upside down from the posture at the time
Projecting below the casting transferred by the transfer mechanism.
And a cutting tool that collides and breaks the hot water and
It is characterized by that.

[0006] Therefore, when the cast product is transferred between processes, the gate section is cut off, so that the efficiency of the operation of removing the gate section can be increased.

[0007]

In the above removing apparatus, the cast product is turned upside down, so that the riser and the lift that have protruded above the cast product in the sprue system portion face downward. Then, when the cast product is transferred, the hot water or the hot water collides with the blade and breaks, and falls as it is. Therefore, the riser and fryer are easily removed and collected, and the fragments are prevented from entering the holes of the casting.

[0009]

[0010] In the above sprue system removing apparatus, the spout of the cast product gripped by the gripping mechanism is broken by the expanding member of the first breaking mechanism, and the pressing member of the second breaking mechanism breaks the runner. .
Then, when transporting the casting in a state where it is turned upside down,
The hot water and fry hit the blade and break off. Therefore, it is possible to collect the sprue system portion solidified integrally with the cast product by sequentially breaking it off and dividing it into an appropriate size. In addition, it is possible to easily separate and collect a hot water or a hot water containing a large amount of impurities and a gate or a runner with a relatively small amount of impurities.

[0011] In the present specification, "gating system part"
The term is not used in a particularly limited sense, and refers to a passage or a similar passage through which hot water (molten metal) enters a region corresponding to a casting body of a mold during casting, and specifically, Taps, runners, hot water, fryers, pools, coughs, etc., which are removed from the casting after casting.

[0012]

According to the present invention, the operation of removing the gate part of the cast product immediately after the mold is separated can be mechanized, and the series of post-processing steps of the cast product can be automated. Also,
Separating and collecting the hot water and the deep-fried water having a large content of impurities makes it easy to reuse the gate and the runner, which can contribute to a reduction in casting costs.

[0013]

An embodiment of the present invention will be described with reference to the drawings. First, the casting (work) to be processed
An example will be described. As shown in FIG. 1, a casting 1 has a pouring port 3 a,
A gate system portion such as a gate (also referred to as a rising gate) 3b, a channel 3c, a cough 3d, a riser 3e, and a fry 3f is provided. In this case, the runner 3c is disposed in a flat U-shape at a position directly below the main body portion 2, is connected to the main body portion 2 through a plurality of weirs 3d, and rises from an intermediate portion of the runner 3c. Extend upward along the body portion 2. The runner 3c has four reference seats 4 projecting therefrom, and at least one of the reference seats 4 is provided with an identification portion 4a capable of displaying information such as the type of a casting product in an uneven shape.

Then, the cast product 1 separated from the mold is placed on a transport pallet 5 as a work. At this time, the support portions 6a to 6d of the transport pallet 5 are
And the front contact portion 7 of the transport pallet 5
The cast product 1 is used for transportation because a and 7b are arranged in front of the runner 3c and rear contact portions 7c and 7d can be in contact with the side end of the reference seat 4 on the rear side. The pallet 5 performs positioning in both front, rear, left and right directions. In addition, by setting the arrangement of the respective reference seats (dimensions corresponding to the reference dimensions A ₀ and B ₀ in this example) substantially the same in a plurality of types of castings having different shapes, the common use of the transport pallet is achieved. It becomes possible. Further, the identification unit 4a can be detected by an appropriate detector to obtain information on the type of casting and the like for each casting.

Next, the removal of the gate section will be described. FIG. 2 is a front view showing the gate section removing device, FIG. 3 is a top view, and FIG. 4 is a side view. The sprue system site removing device shown in FIGS. 2 to 4 includes a carry-in part for carrying the cast product 1 separated into a mold into a predetermined position, a gate 3b and a runner 3c of the cast product 1.
A gate / runner removing unit for removing water, and a feeder / frier removing unit for removing the feeder 3e and the fryer 3f. Hereinafter, description will be made in order.

As shown in phantom lines in FIG. 2, a roller conveyor 12 is provided on a frame 11 installed on a floor 10 for transferring the cast product 1 placed on a pallet 5 for transport. It is configured to be transported to a predetermined carry-in position by the conveyor 12. In addition, if necessary, the irregular shape of the identification part 4a (see FIG. 1) of the casting 1 may be provided at an appropriate position of the loading part by a stylus or a non-contact type of the detector 13 schematically shown in FIG. There is provided an identification means for obtaining information such as the type of casting for each casting 1 by detecting with the sensor.

Next, the gate / runner removing section will be described. FIG. 5 is a front view of a gate / runner removing unit, FIG. 6 is a top view, and FIG. 7 is a side view. The gate / runner removing unit 14 includes a gripping mechanism for gripping the casting 1 and a first mechanism for breaking the gate 3b.
It comprises a folding mechanism and a second folding mechanism for folding the runner 3c.

First, the gripping mechanism will be described. 5 to 7
As shown in the figure, mounting stands 15 and 15 are provided on the frame 11 at left and right positions for holding the carried-in casting 1.
Each mounting stand 15 is provided with clamp units 16, 17, 18, and 19 for clamping the cast product 1. The clamp units 16 to 19 include pressing members 16 a to 19 a for pressing against the main body (cylinder block) 2 of the casting 1, guide rods 16 b to 19 b for supporting the pressing members 16 a to 19 a so as to be able to move forward and backward,
Hydraulic cylinder 16c for pressing pressing members 16a to 19a
To 19c. In this case, the pressing members 16a-
19a is a position 4 near the runner on the left and right sides of the casting 1.
It is arranged so as to come into contact with two places, the upper two places and the middle part of the casting 1 (see FIG. 11). In FIG. 6, 1
Reference numeral 6d denotes a support member on which a detection switch for detecting the movement position of the guide rod 16b is mounted.

In the above gripping mechanism, the casting 1
The clamp position for clamping the clamp unit, that is, the mounting position of the clamp units 16 to 19, is fixed, but is configured to be movable, and the above-described identification means is used for each casting based on information such as the type of casting obtained from the identification unit 4a. A control device that can select an optimal clamp position may be provided.

Next, the first folding mechanism will be described. As shown in FIGS. 6 to 9, a guide rod 22 a supporting the moving blade 21 so as to be able to move forward and backward is provided on the mounting stand 15.
And a hydraulic cylinder 22b for pushing the moving blade 21 are attached. The moving blade 21 is formed in a wedge shape having a tapered planar shape, and has a sliding contact surface 21a which is in sliding contact with the main body portion 2 of the casting 1, and a sliding contact surface 21a.
And an inclined surface 21b that is inclined with respect to the gate 3b to be brought into contact with the gate 3b, moves forward by the operation of the pusher 22, breaks between the main body portion 2 and the gate 3b, and folds the gate 3b so as to be expanded. . The moving blade 21 is an example of the expanding member according to the present invention. The height of the left and right moving blades 21 is close to each other, and they are arranged so that they intersect at the time of forward operation, as shown in FIGS. 8 and 9. Can also. In addition to the above configuration, it is also conceivable to insert an opening member formed in an oval shape between the main body portion 2 and the gate 3b and rotate it to push and expand both members.

Next, the second folding mechanism will be described. The mounting stand 15 has a guide rod 26a at its tip for supporting the pressing member 25 so as to be able to move forward and backward.
6a and a hydraulic cylinder 26b for pushing the guide rod 2
A pusher 26 including a support member 26c to which a detection switch for detecting the movement position of the 6a is mounted is mounted. That is, when the pusher 26 operates, the pressing members 25 move in a substantially horizontal direction, approach each other, and abut against the flat-shaped U-shaped runner 3c which is a pressed member. As shown in FIG. 10, the pressing member 25 has a substantially stepped planar shape, so that the protrusions 25a to 25c of the pressing member 25 are formed from the distal end side to the proximal end side of the runner 3c. They come into contact sequentially. In this figure, the main body 2 of the casting 1 is broken and omitted.

Next, the feeder / fryer remover will be described. The feeder / fryer remover has a transfer mechanism having a reversing device,
And a third take-off mechanism. As shown in FIGS. 2 to 4, a guide rod 32a for supporting the base 31 so as to be able to move horizontally and a hydraulic cylinder 32b for reciprocating the base 31 are attached to an upper frame 11a provided on the frame 11. A vertically extending guide rod 33a attached to the base 31 and a hydraulic cylinder 33b support the sub-frame 34 so as to be able to move up and down. In the figure, reference numeral 35 denotes a detection device for detecting the elevation position of the sub-frame 34, which is composed of, for example, a rack, a pinion, and an encoder.

The sub-frame 34 has a front arm (reference side arm) 36 that rotates around a fulcrum 36a, a rear arm (driven side arm) 37 that is formed so as to be able to move toward and away from the front arm 36, and A hydraulic cylinder and link mechanism (not shown) for driving the front arm 36 and a hydraulic cylinder 38 for driving the rear arm 37 are attached.
9 is formed so as to be able to grip the main body 2 of the casting 1 (having the gate 3b and the runner 3c already removed) supported at a predetermined position. Further, the rear arm 36 is provided with a reversing device mainly composed of a hydraulic motor 39 for reversing the top and bottom by rotating the gripped casting 1 about a substantially horizontal axis. By this transfer mechanism, the casting 1 is transferred to the next step.

The mounting stand 1 is mounted on the frame 11.
5 are provided adjacent to each other, and a support plate 11c attached to the support portion 11b is provided with a cast product 1b.
A cutting tool 40 for causing the feeder 3e and the fryer 3f to collide and break the feeder 3e is fixedly provided by a mounting member 11d (see FIG. 5). That is, when the casting 1 is transferred by the above-described transfer mechanism, the feeder 3e and the fryer 3f hit the blade 40 and are cut off. That is, in the case of the present example, the third take-off mechanism is one in which the cutting tool 40 is disposed in the middle of the transfer trajectory of the casting 1, and is included in the transfer mechanism. In addition, the cutting tool 40 is formed so that the end face 40a hits the feeder 3e and the left and right side faces 40b hit the lift 3f, as shown in FIG.

A chute 41 is provided below the cutting tool 40 and guides the falling pieces of the feeder 3e and the fly 3f onto the discharge conveyor 42. On the other hand, the runner removing section 14
A discharge conveyor 43 is provided at a lower position of the container so that the falling gate 3b and the runner 3c can be conveyed. Although not shown in FIG. 2 at the place indicated in FIG. 2, for example, equipment such as a grinder is installed as the next step.

Now, the operation of the gate-portion removing device configured as described above will be described. As schematically shown in FIG. 11, the cast product 1 after being separated from the mold is placed on a transport pallet 5, and the cast product 1 supported in a predetermined posture is transported together with the transport pallet 5 to a predetermined position by a roller conveyor 12. Carry in the location. Subsequently, the clamp units 16 to 19 are operated, and the main body (cylinder block) 2 of the casting 1 on the transport pallet 5 is pressed and gripped by the pressing members 16a to 19a. Then, the transport pallet 5 after passing the casting 1 is appropriately retracted. In the loading step, the type and the like of the casting 1 can be known by identifying the identification portion 4a of the reference seat 4 through the identification means.

The following is the gate removal (rising runner folding) step. As schematically shown in FIG.
The first breaker mechanism of the gate / runner removing unit 14 is operated for the casting 1 gripped in 6 to 19. And moving blade 2
If the slits 1 and 21 are inserted between the main body 2 of the casting 1 and the gate 3b, the gate 3b is broken, and the cut gate 3b falls onto the lower discharge conveyor 43 (see FIG. 2). Since the position where the moving blade 21 hits the gate 3b is optimally set, the gate 3b is mainly subjected to bending stress and breaks at its root, that is, at the connection with the runner 3c. At this time, basically, the left and right moving blades 21 are applied to the gate 3b almost at the same time.
Only one of them can be driven to change the folding direction. Further, the left and right moving blades 21 for each casting type are obtained based on the information such as the casting type obtained by the identification means.
It is also possible to adjust the stroke, pressing force, and the like.

Next, the step of removing the runner (crease folding) will be described. As schematically shown in FIG. 14, following the previous step, while holding the casting 1 with the clamp units 16 to 19, the pusher 26 of the second folding mechanism is operated to push the left and right pressing members 25, 25. It is pressed against the runner 3c of the casting 1 and cut off. At this time, as shown in FIG. 10, the protrusions 25 a to 2
Since 5c abuts sequentially from the tip of the U-shape, the plurality of thinly formed weirs 3d are sequentially broken from the tip side of the runner 3c, and as a result, shown by imaginary lines in FIG. Thus, at the same time as the runner 3c is separated from the casting 1, the runner 3c is divided into two at the base end. Note that the broken runner 3c is connected to the lower discharge conveyor 4 as in the case of the gate 3b.
3 (see FIG. 2).

Next, the feeder / fryer removing step will be described. In this method, the above-described transfer mechanism is operated to transfer the casting 1 to the next step, and a third take-off mechanism is operated during the transfer to break the feeder and the fryer. That is, as schematically shown in FIG. 15A, the sub-frame 34 is lowered by the hydraulic cylinder 33b, and the main body 2 of the casting 1 is gripped by the front arm 36 and the rear arm 37. And the clamp units 16-1
9, the subframe 34 is lifted to raise the casting 1, and the hydraulic motor 39 of the reversing device is driven to rotate the casting 1 by 180 ° about a substantially horizontal axis.
Rotate. In addition, the detection device 35 is the subframe 3
4, the casting 1 is lifted to a preset height position.

Subsequently, as schematically shown in FIG. 15B, the sub-frame 34 is advanced together with the base 31 by the hydraulic cylinder 32b, and the casting 1 is moved by the front and rear arms 36 and 37.
While holding the water, the feeder 3e and the fryer 3f are
Collide and break off. The torn pieces are guided by the chute 41 and fall on the discharge conveyor 42 (see FIG. 2) to be carried out. That is, since the feeder 3e and the fryer 3f are broken off in a state located below the casting 1, the fragments do not enter the holes (cylinder bores) of the main body (cylinder block) 2. Then, FIG.
As schematically shown in (c), the casting 1 is rotated 180 ° to return the top and bottom to the original state, and the main body 2 of the casting 1 is transferred to the next step.

As described above in detail, according to the above-described gate-portion-removing apparatus, the operation of removing the gate-portion-portion solidified integrally with the casting can be mechanized, and can be linked to the preceding and following steps. Therefore, in addition to removing the gate system,
It becomes possible to automate post-processing steps of a series of cast products including slow cooling, deburring, shot blasting and the like. In addition, it is possible to separate and collect a hot water or a hot water with a large amount of impurities and a gate or a hot water with a relatively small amount. Further, since there is no variation such as a manual hammering operation, and the gate and the runner are subdivided into appropriate sizes, subsequent handling becomes easy.
For this reason, the discharge conveyor can be reduced in size, the capacity of the storage section does not need to be excessively large, and the furnace can be easily charged for reuse as cast metal.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating a casting and a pallet for conveyance.

FIG. 2 is a front view of the sprue system site removing device according to the embodiment of the present invention.

FIG. 3 is a top view of a main part of the sprue system site removing device.

FIG. 4 is a side view of the gate section removing device.

FIG. 5 is an enlarged front view of a main part of the sprue system site removing device,
3 shows a gate / runner removing section and a hot water / fry removing section.

FIG. 6 is a CC view of FIG. 5;

FIG. 7 is an enlarged view of a main part of FIG. 4, showing a gate / runner removing section and a feeder / fry removing section.

FIG. 8 is a partially enlarged side view illustrating a moving blade and a pusher of the first folding mechanism.

FIG. 9 is a partially enlarged plan view showing the left and right moving blades in a closed state.

FIG. 10 is a partial cross-sectional plan view illustrating a pressing member and a pusher of a second folding mechanism.

FIG. 11 is an explanatory view of a loading step.

FIG. 12 is a diagram illustrating identification of each casting type by a detector.

13 (a) and 13 (b) are explanatory views of a gate-breaking step, in which (a) shows a gripping state of a side surface of a casting and a moving blade, and (b) shows a front shape and a moving blade of the casting.

14 (a) and 14 (b) are explanatory views of a runner breaking-off process, in which (a) shows a gripping state of a side surface of a casting and a pressing member, and (b) shows a front shape of the casting.

15A and 15B are explanatory diagrams of a transfer process, wherein FIG. 15A shows a state in which a casting is lifted and inverted, FIG. 15B shows a state in which a riser and a lift of the casting are made to collide with a cutting tool, and FIG. The figure shows a state in which the casting is transferred to the next step after the hot water and the frying are broken.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Casting 2 Body part (cylinder block) 3b Gate 3c Runner 3e Feeder 3f Lifting 5 Transport pallet 16-19 Clamp unit 21 Moving blade (expanding member) 22, 26 Pusher 25 Pressing member 31 Base 32b, 33b Hydraulic cylinder 34 Sub-frame 36 Front arm 37 Rear arm 39 Hydraulic motor 40 Cutting tool

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Koichi Ogawa 3-36 Noritake Shinmachi, Nishi-ku, Nagoya-shi, Aichi Prefecture Noritake Co., Ltd. (56) References Japanese Unexamined Patent Publication No. 9-271891 (JP, A) Japanese Utility Model Application No. 55-103056 (JP, U) Japanese Utility Model Application No. 6-5757 (JP, U) Japanese Utility Model Application No. 5-5263 (JP, U) Field (Int.Cl. ⁷ , DB name) B22D 31/00 B22C 9/08 B26F 3/00 B26F 3/02

Claims (1)

(57) [Claims] 1. An apparatus for removing, from a casting, a gate section such as a gate, a runner, a riser, a fry, etc. solidified integrally with the casting, comprising: a gripping mechanism for gripping the casting; A first breaking mechanism that cuts the sprue by inserting an expanding member between a main body portion of the casting and a sprue extending along the main body portion, and a pressing member against the sprue of the casting. A second take-off mechanism for pressing the runner to break the runner, a transfer mechanism for transferring the casting in a state where the casting is turned upside down from a posture at the time of casting, and a lower part of the casting transferred by the transfer mechanism. A sprue system part removing device comprising: a cutting tool that collides with a protruding riser and fryer to break the same.