KR102636280B1 - Automatic decoring apparatus for casting goods - Google Patents

Abstract

The present invention relates to an automated device for sand removal of castings, comprising: an upper frame provided with a predetermined open jig placement space; A fixing jig is installed in the jig placement space provided in the upper frame and allows the casting prepared through the casting process, including the inner core and molding sand, to be seated and maintained in a fixed support state during the hammering process and sand removal process. unit; At least one hammering module that crushes the inner core by hitting one side of the casting that is maintained in a fixed support state in the fixed jig unit; a lower frame installed on a device installation frame, connected to the upper frame on the upper side, and having the hammering module installed on one side; At least one vibrating module installed on one side of the upper frame and generating vibration through the output of a predetermined exciting force; and a control module that controls the operating states of the fixed jig unit, hammering module, and vibrating module.

Description

Casting desanding automation device {AUTOMATIC DECORING APPARATUS FOR CASTING GOODS}

The present invention relates to an apparatus for preparing a casting product in which the internal core and molding sand are completely removed from the casting through automation of hammering and sand removal of the casting, which is the result of a casting process based on an inorganic resin material.

Decoring refers to the process of separating the metal solidified in the mold through the casting process from the molding sand and removing the remaining material. The material to be removed through this decoring process is resin (resin), which is an organic compound. Resin) was frequently applied, but due to environmental hazard issues such as the emission of environmental hormones, improvement measures using resin materials, which are inorganic compounds, are being proposed.

In particular, in the desanding process, workers are sometimes put into the process to ensure the removal of resin residues. In this case, workers are exposed to various harmful substances such as formaldehyde, silica, and chromium, which puts the workers' health and safety at risk. Problems continue to arise.

Considering these problems, the desanding process for castings, which are the result of a casting process based on recently used inorganic resin materials, has the advantage of improving environmental hazards and worker safety, but due to the material properties with high cohesiveness, residual impurities are removed. There was a problem that removal was difficult compared to castings based on organic resin materials.

Accordingly, there is a continued need for the development of devices and technologies that can perform the sand removal process more precisely and reliably to completely remove residual impurities from the casting resulting from the casting process based on inorganic resin material.

In relation to this, prior literature on the prior art prepared to remove the molding sand attached to the casting by directly hitting it with a separately installed striking means includes the "Casting sand removal device" (hereinafter referred to as 'Casting sand removal device' in Republic of Korea Patent Publication No. 10-1210664) (referred to as ‘prior art’).

However, in the case of existing casting desanding devices, including the prior art, when performing the desanding process on a casting that is the result of a casting process based on an inorganic resin material with high cohesive material properties, a large amount of residue is still left behind and complete desanding is performed. There was a performance problem that prevented this from being achieved.

In addition, in the case of existing casting desoldering devices, including the prior art, hammering action and vibration that cause blows are aimed at completely descraping the castings that are the result of the casting process based on inorganic resin material with high cohesive material properties. As the vibrating operation was carried out simultaneously, a phase change in the installation location of each functional component of the device was caused, or there was difficulty in securing the durability of the component itself, which led to problems with management and maintenance costs.

The present invention was created to solve the above problems, and the purpose of the present invention is to design and operate the casting product that is the result of a casting process based on an inorganic resin material with high cohesive material properties so that complete sand removal can be achieved. The aim is to provide an automated device for casting sand removal that minimizes the impact of work movements generated during the sand removal process on changes in the installation positions and durability reduction of the composition and frame structures that perform various functions within the device while maintaining a high level of sand removal performance.

In order to achieve the above object, the automatic casting desanding device of the present invention includes an upper frame provided with a predetermined open jig placement space; A fixing jig is installed in the jig placement space provided in the upper frame and allows the casting prepared through the casting process, including the inner core and molding sand, to be seated and maintained in a fixed support state during the hammering process and sand removal process. unit; At least one hammering module that crushes the inner core by striking one side of the casting that is maintained in a fixed support state in the fixed jig unit; a lower frame installed on a device installation frame, connected to the upper frame, and having the hammering module installed on one side; At least one vibrating module installed on one side of the upper frame and generating vibration through the output of a predetermined exciting force; and a control module that controls the operating states of the fixed jig unit, hammering module, and vibrating module.

And the casting removal automation device is provided with a predetermined elastic support force, and is disposed at a plurality of points between the lower part of the upper frame and the upper part of the lower frame to mutually interact between the upper frame and the lower frame along the vertical height direction. A plurality of first elastic vibration isolating members that absorb transmitted vibrations; and is provided with a predetermined elastic support force, and is disposed at a plurality of points between the lower part of the lower frame and the upper part of the device installation frame to absorb vibration transmitted between the lower frame and the device installation frame along the vertical height direction. It may further include a plurality of second elastic vibration isolating members.

Here, the upper frame includes a frame body portion in which the same number of vibrating modules are installed on each of both sides; a first jig connection frame portion extending to protrude from one side of the frame body portion; and a second jig connection frame portion that extends to protrude from the other side of the frame body portion and provides a space for placing the jig between the first jig connection frame portion, and the fixing jig unit includes the first jig unit. A first clamp unit installed on one side of the connection frame unit to elastically support one side of the casting placed in the jig placement space toward the second jig connection frame unit; A second clamp unit installed on one side of the second jig connection frame unit to adsorb and secure the other side of the casting placed in the jig placement space; It may include; and an adsorption drive unit that suctions air through an air suction path connected to the contact surface with the other side of the casting of the second clamp part and provides a predetermined adsorption fixing force.

In addition, the control module controls the operating status of the fixing jig unit and the hammering module for a preset first operation time to allow the hammering process to crush the inner core included in the casting to proceed first, and then proceeds for a preset second operation time. By controlling the operating states of the fixing jig unit and the vibrating module, a sand removal process in which the crushed inner core and the casting product from which the molding sand has fallen can be left behind can be performed.

In addition, the control module can control the hammering process of hitting one side of the casting to proceed for a first operating time of 20 to 30 seconds with the hammering module having a stroke of up to 50 mm and a hammering rate of up to 20 hz. there is.

In addition, the control module generates vibration in a state where the vibrating module has a centrifugal force of 790kg to 810kg and a Vibrating rate of 28hz to 30hz, and the desanding process that causes desoldering of the casting is performed in a second operation of 60 to 70 seconds. You can control the progress over time.

According to the present invention, the following effects are achieved.

First, complete sand removal can be achieved in a casting that is the result of a casting process based on an inorganic resin material with high cohesive material properties, and as a result, the quality of the casting product from which the inner core and molding sand has been removed is excellent.

Second, the work movement that occurs during the sand removal process can minimize the impact of the work movement on changes in the installation position and reduced durability of the composition and frame structures that perform various functions within the device while maintaining a high level of sand removal performance.

Third, even when repeated sand removal operations are carried out for a long period of time, mechanical properties such as heat resistance, wear resistance, and durability are sufficiently secured, thereby ensuring economic feasibility in terms of management and maintenance costs of the device.

Fourth, along with the target-designed composition and structural characteristics to ensure complete sand removal of the casting, which is the result of a casting process based on an inorganic resin material with high cohesion material properties, the control method also includes hammering and vibration according to preset commands. As the rating work is carried out sequentially and automatically, a high level of work efficiency is achieved.

Figures 1 and 2 are perspective views showing the form of an automated casting desanding device according to the present invention.
Figure 3 is a plan view showing the form of an automated casting desanding device according to the present invention.
Figure 4 is a side view showing the form of an automated casting desanding device according to the present invention.

Preferred embodiments of the present invention will be described in more detail with reference to the attached drawings, but already well-known technical parts will be omitted or compressed for brevity of explanation.

<Description of automated casting desilting device>

1 to 2, the automated device 100 for desanding of castings of the present invention is designed to completely desand a casting, which is the result of a casting process based on an inorganic resin material with high cohesive material properties. upper frame 110; Fixed jig unit 120; Hammering module 130; lower frame 140; Vibrating module 150; Control module 160; First elastic vibration isolation member (170); Second elastic vibration isolation member (180); and a desanding work collection structure 190.

First, the casting is produced through a casting process using a mixture of inorganic resin material (organic resin material can also be applied depending on the implementation) and sand, and contains an internal core and molding sand, so the desanding process is performed. These must be removed so that a complete molded product can be obtained without any presence.

Here, the inorganic resin material may include, but is limited to, a resin composition in the form of an inorganic compound such as a metal alkoxide such as NaOMe (sodium methoxide) or a silica precursor such as TEOS (tetraethyl orthosilicate). It can be replaced with resin materials in the form of various inorganic compounds.

The upper frame 110 is a frame structure with an open jig placement space and corresponds to the uppermost area where the actual sand removal process is performed.

Here, the upper frame 110 is structurally divided into three areas, and each of these areas is integrated with each other but has a different structure.

Specifically, as shown in Figures 1 and 3, the upper frame 110 has a first jig connection frame part 112 extending from one side with the frame body part 111 as the base and protruding from the other side. It consists of a second jig connection frame portion 113 that extends in the form of , and has a 'ㄷ'-shaped structure in plan.

As an example, as shown in FIG. 1, the first jig connection frame 112 protrudes toward the front from the front left of the frame body 111 to form a frame of a wall structure, and the first jig connection frame 112 protrudes from the front right of the frame body 111. The two-jig connection frame portion 113 protrudes toward the front and forms a frame of a wall structure.

Here, the open space between the first jig connection frame portion 112 and the second jig connection frame portion 113 is provided as a jig placement space 110T and is used as an installation and operation area for the fixing jig unit 120, which will be described later. It is used.

In addition, the same number of vibrating modules 150, which will be described later, are installed on one side and the other side of the frame body 111, and at least one vibrating module 150 is installed on each side.

The fixed jig unit 120 is installed in the jig placement space 110T provided in the upper frame 110, and the casting C prepared including the inner core and molding sand through the casting process is seated, and the hammering process and Ensure that the fixed support state is maintained during the sand removal process.

For this purpose, the fixing jig unit 120 includes a first clamp part 121, a second clamp part 122, a suction drive part 123, and a support part 124, as shown in Figures 1 and 2. Includes.

First, the first clamp part 121 is installed on one side of the first jig connection frame part 112 and elastically supports one side of the casting (C) placed in the jig placement space 110T toward the second jig connection frame part 113. do.

Specifically, as shown in Figure 2, the first clamp portion 121 is a seating plate that is a plate-shaped frame structure provided with a predetermined protruding structure provided to stably seat or support one side of the casting (C), such as a locking jaw. A first column consisting of a pillar structure that can move left and right within a certain limit near each vertex of the part (121a) and a spring member that surrounds the outside of the pillar structure and supports the bottom surface (left side in Figure 2) of the seating plate part (121a). An elastic support portion 122b is installed.

Therefore, even if an external force is applied toward the seating plate portion 121a and the first jig connection frame portion 112 (left side in Figure 2), the first clamp portion 121 is maintained by the elastic support force of the first elastic support portion 122b. In order to restore the left and right phase, the seating plate portion 121a is designed to push one side of the casting C toward the second jig connection frame portion 113 (right side in Figure 2).

In addition, the seating plate portion 121a of the first clamp portion 121 is provided with a hammer flow hole 121H open in the left and right directions at the center as shown in FIG. 2, so that the hammering module 130, which will be described later, is cast ( C) In order to hit one side, a certain work space is provided that can move in the left and right directions.

Next, the second clamp part 122 is installed on one side of the second jig connection frame part 113 to adsorb and fix the other side of the casting placed in the jig placement space 110T through interlocking with the suction driving part 123.

Specifically, as shown in Figure 2, the second clamp part 122 is structurally connected to communicate with a plurality of suction holes provided on the contact surface with the other side of the casting (C) of the suction plate portion 122a, which is a plate-shaped frame structure. The suction drive unit 123 suctions air through the air suction path to provide a predetermined fixed support force through vacuum suction.

In addition, a pillar-shaped pillar support part 122 is installed near each vertex of the suction plate part 122a to support the plate while forming a predetermined separation distance from the second jig connection frame part 113, and In the mutually spaced space formed together, a second elastic support portion 122c with a predetermined elastic force is disposed, and a blow is applied to one side of the casting (C) through the hammering module 130, which will be explained later, and the second jig connection frame portion 113 ) When an external force is applied to the side (right side in Figure 2), the suction plate portion 122a is elastically supported and the left and right phases can be restored.

Furthermore, the lower part of the casting (C), which is seated and supported on both sides through the first clamp part 121 and the second clamp part 122, is supported by the support part 124, and depending on the implementation, the support part 124 ), a number of suction holes open to the upper side are formed, and an interlocking design is formed through the formation of an air suction path with the suction drive unit 123, so that a certain fixed support force is provided through vacuum adsorption not only on the other side of the casting (C) but also on the lower side. You can.

At least one hammering module 130 is provided to crush the inner core by hitting one side of the casting (C), which is maintained in a fixed support state in the fixed jig unit.

Here, the hammering module 130 is connected and installed on one side of the lower frame 140, and passes through the open space of the hammer flow hole 121H provided in the seating plate portion 121a through a striking operation to one side of the casting (C). It is positioned so that it can hit.

Specifically, the hammering module 130 has a hammer unit 131, which is a column-shaped structure that performs a direct strike, connected to one side of the hammer drive unit 132, which is provided as a pneumatic cylinder type, so that the hammer drive unit 132 uses air pressure to drive the hammer unit ( 131) is designed to move in the left and right directions and perform a striking action.

In addition, the hammering module 130 is connected and installed on one side of the lower frame 140, and one side of the hammer installation part 133 is connected to the lower frame 140 so that it can hit one side of the casting (C). It has an installation structure in which the other side of the part 133 is connected to the hammer driving part 132, and at the center of the first jig connection frame part 112 is a hammering module installation hole 121H open to a predetermined size along the left and right directions. It is provided to provide a free space through which the front end of the hammer driving unit 132 (right end in FIG. 2) or the rear end of the hammer unit 131 (left end in FIG. 2) can be inserted.

The lower frame 140 is a frame structure installed on the device installation frame (P) and connected to the upper frame 110 on the upper side, and corresponds to the area between the device installation frame (P) and the upper frame 110.

Specifically, as shown in Figures 1 and 4, a first elastic vibration isolating member 170 is installed between the upper frame 110 and the lower frame 140 to form a connection between the frames and to secure the installation space of the entire device. A second elastic vibration isolation member 180 is installed between the device installation frame P and the lower frame 140 to form a connection between the frames.

Here, the first elastic vibration isolating member 170 is a member with a predetermined elastic support force, such as Marshmello rubber, and is provided in plural pieces (most preferably 4 pieces) near and below each vertex on the lower surface of the upper frame 110. It is disposed at a plurality of points near each vertex on the upper surface of the frame 140 to absorb vibrations transmitted between the upper frame 110 and the lower frame 140 along the vertical height direction.

In particular, the first elastic vibration isolation member 170 reduces the level of vibration generated on the upper frame 110 through the operation of the hammering module 130 and the vibrating module 150, which will be described later, to the lower frame 140 itself and the lower frame 140 itself. Ensure that it is minimally transmitted to the device installation frame (P) via the lower frame (140).

In addition, the second elastic anti-vibration member 180 is a member with a predetermined elastic support force, such as an anti-vibration mount rubber, and is provided in plural pieces (most preferably four) so as to form an angle on the lower surface of the lower frame 140. It is disposed at a plurality of points between the vertices and each vertex on the upper surface of the device installation frame (P) to absorb vibrations transmitted mutually between the lower frame 140 and the device installation frame (P) along the vertical height direction.

In particular, the level of vibration transmitted to the lower frame 140 and the vibration generated on the lower frame 140 through the operation of the hammering module 130 is reduced to a minimum on the upper frame 110 and the device installation frame (P). Make sure it is delivered.

And, as shown in Figures 1 and 4, in the area below the jig placement space 110T of the lower frame 140, the crushed inner core and molding sand dropped from the casting product through the hammering process and sand removal process are placed downward. A collection structure 190 for gathering the sand removal workpiece is provided to guide the collection to be dropped and moved to the collection space (T) to be provided on the device installation frame (P).

The vibrating module 150 is installed on one side of the upper frame 110 and is configured to generate vibration through the output of a predetermined exciting force. At least one vibrating module 150 is provided.

Specifically, the vibrating module 150 generates an exciting force through the rotational drive of a motor equipped with a built-in cam, and as described above, is installed symmetrically on one side and the other side of the frame body 111, respectively. desirable.

The control module 160 adsorbs and fixes the casting (C) through the fixing jig unit 120, crushes the casting (C) by striking it through the hammering module 130, and crushes the casting (C) through the vibrating module 150. It corresponds to a configuration that automatically controls the operating status of each process, such as vibrating sand removal, based on preset control command signals.

Specifically, in order to ensure complete sand removal of the casting, which is the result of a casting process based on an inorganic resin material with high cohesion material properties, the control module 160 first operates the fixed jig for a preset first operation time. The operating states of the unit 120 and the hammering module 130 are controlled to ensure that the hammering process of crushing the inner core included in the casting seated on the jig is carried out in a manner that provides a fixed support force through elasticity and adsorption.

Accordingly, the control module 160 controls the operating status of the fixing jig unit 120 and the vibrating module 150 for a preset second operating time and is seated on the jig in a form that provides a fixed support force through elasticity and suction. The shredded inner core and molding sand are completely separated, leaving behind the cast product, falling to the sand removal work collection structure 190, collecting them, and then being guided to the collection space (T) to be provided on the device installation frame (P). Let it proceed after this.

Furthermore, the control module 160 controls the hammering module 130 to perform a hammering process of hitting one side of the casting (C) with a stroke of up to 50 mm and a hammering rate of up to 20 hz, and this It is preferable that the operation control proceeds for a first operation time of 20 to 30 seconds to ensure complete desilting of the casting, which is the result of a casting process based on an inorganic resin material with high cohesive material properties.

In addition, the control module 160 performs a desilting process in which the vibrating module 150 generates vibration at a centrifugal force of 790kg to 810kg and a vibrating rate of 28hz to 30hz to cause desilting of the casting (C). The operation is controlled so that the operation control is carried out for a second operation time of 60 to 70 seconds to ensure complete desilting of the casting, which is the result of a casting process based on an inorganic resin material with high cohesion material properties. It is desirable to

The embodiments disclosed in the present invention are not intended to limit but illustrate the technical idea of the present invention, and the scope of the technical idea of the present invention is not limited by these examples. The scope of protection should be interpreted in accordance with the claims below, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of rights of the present invention.

100: Automation device for desanding of castings
110: upper frame
111: frame body part
112: First jig connection frame part
113: Second jig connection frame part
110T: Jig placement space
120: Fixed jig unit
121: first clamp part
121a: Seating plate portion 121b: First elastic support portion
121H: Hammer flow hole
122: Second clamp part
122a: suction plate portion 122b: pillar support portion
122c: Second elastic support part
123: Suction driving unit
124: base
130: Hammering module
131: hammer unit 132: hammer driving unit
133: Hammer installation part
140: lower frame
150: Vibrating module
160: Control module
170: First elastic vibration isolation member
180: Second elastic vibration isolation member
190: De-sanding work recruitment structure
C: Casting
P: Device installation frame
T: Recruitment space

Claims (6)

An upper frame with an open jig placement space;
A fixing jig is installed in the jig placement space provided in the upper frame and allows the casting prepared through the casting process, including the inner core and molding sand, to be seated and maintained in a fixed support state during the hammering process and sand removal process. unit;
At least one hammering module that crushes the inner core by hitting one side of the casting that is maintained in a fixed support state in the fixed jig unit;
a lower frame installed on a device installation frame, connected to the upper frame on the upper side, and having the hammering module installed on one side;
At least one vibrating module installed on one side of the upper frame and generating vibration through the output of a predetermined exciting force;
A control module that controls the operating states of the fixed jig unit, hammering module, and vibrating module;
It is provided with a predetermined elastic support force, and is disposed at a plurality of points between the lower part of the upper frame and the upper part of the lower frame to absorb vibrations transmitted to each other between the upper frame and the lower frame along the vertical height direction. First elastic vibration isolation member; and
It is provided with a predetermined elastic support force, and is disposed at a plurality of points between the lower part of the lower frame and the upper part of the device installation frame to absorb vibrations transmitted between the lower frame and the device installation frame along the vertical height direction. It includes a plurality of second elastic vibration isolation members,
The upper frame is,
A frame body portion in which the same number of vibrating modules are installed on each side;
a first jig connection frame portion extending to protrude from one side of the frame body portion; and
It includes a second jig connection frame portion that extends to protrude from the other side of the frame body portion and provides a space for placing the jig between the first jig connection frame portion,
The fixed jig unit is,
A first clamp unit installed on one side of the first jig connection frame unit to elastically support one side of the casting placed in the jig placement space toward the second jig connection frame unit;
A second clamp unit installed on one side of the second jig connection frame unit to adsorb and secure the other side of the casting placed in the jig placement space; and
It includes an adsorption driving unit that sucks air through an air suction path connected to the contact surface with the other side of the casting of the second clamp part and provides a predetermined adsorption fixing force,
The control module controls the operating status of the fixing jig unit and the hammering module for a preset first operation time to allow the hammering process to crush the inner core included in the casting to proceed, and then for a preset second operation time. Characterized in that the operating state of the fixed jig unit and the vibrating module is controlled to allow the sand removal process to proceed afterwards so that the crushed inner core and the casting product from which the molding sand has fallen remain.
Casting desanding automation device.
delete delete delete According to paragraph 1,
The control module is characterized in that it controls the hammering process of hitting one side of the casting to proceed for a first operating time of 20 to 30 seconds with the hammering module having a stroke of up to 50 mm and a hammering rate of up to 20 hz. doing
Casting desanding automation device.
According to paragraph 1,
The control module generates vibration in a state where the vibrating module has a centrifugal force of 790kg to 810kg and a Vibrating rate of 28hz to 30hz, and the dedusting process that causes desilting of the casting is performed for a second operating time of 60 to 70 seconds. Characterized by controlling the progress
Casting desanding automation device.

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