JP6511706B1 - Extraction device of residual projectile - Google Patents

Abstract

The present invention relates to a residual projection which can easily change the direction of a cast product etc. and extract residual projectile in the hollow section even if the cast product having a hollow section in which the inner wall surface is blast-polished with a blast material is heavy. Provide a material extraction device. A cross section of a free roller group is U-shaped in a rotating body R which is rotated by a drive motor 24 which is intermittently rotated in forward and reverse directions and is vibrated by a vibration motor 40. A casting part is housed in the storage part 32 which is provided with the storage part 32 and the closing free roller group which closes the opening of the storage part 32 openably and closably, and the opening part is closed by the closing free roller group. It is an extraction device of residual projectile which applies intermittent rotation and vibration to the rotating body R in forward and reverse directions, changes the direction and position of the cast product, and extracts the remaining projectile in the hollow portion. [Selected figure] Figure 1

Description

  The present invention relates to a device for extracting residual projection material, which blasts the inner wall surface of a hollow portion opened to the surface of a cast product, and ejects the projection material remaining in the hollow portion from the hollow portion.

  When a cast product having a hollow portion opened to the surface is removed from the mold, core sand is packed in the hollow portion, and it is necessary to peel off the core sand from the hollow portion. Such peeling removal of core sand may be blasted using the blasting apparatus described in the following patent documents 1-3. In this blasting, core sand can be separated and removed from the hollow portion by injecting compressed air in a mixed state and the projectile from the injection port at the tip of the nozzle inserted into the hollow portion of the cast product.

Patent No. 5688607 gazette Patent No. 5688608 gazette Patent No. 5688610 gazette

  By blasting the hollow part of the cast product with the projectile using the blasting device described in Patent Documents 1 to 3, core sand that has been packed in the hollow part of complex shape can be peeled off and removed, and at the same time the inner wall surface of the hollow part Even blasting can be done. In the hollow portion of the cast product subjected to such blasting, the jetted projection material remains, and it is necessary to remove the remaining projection material (hereinafter referred to as a residual projection material). The residual projection material does not adhere to the inner wall surface of the hollow portion and can be easily removed by blowing compressed air into the hollow portion or changing the direction of the cast product.

  However, manually removing residual projection material in the hollow portion of the cast product is not preferable from the viewpoint of workability. In addition, when the casting product is heavy, it is difficult to change the orientation of the casting product.

  The present invention has been made to solve the above-mentioned problems, and, even when the cast product is heavy, it is possible to easily change the direction etc. of the casting material so that the remaining projection material in the hollow portion can be extracted. It aims at providing a withdrawal device.

The present invention which can solve the above-mentioned problem blasts and polishes the inner wall surface of the hollow part opened to the surface of a cast product, and the device which takes out the projection material remaining in the hollow part from the hollow part vibrates on the base. A stand mounted via an absorbing member, rotatably supported by a pair of support stands erected via a predetermined distance, and driven to be driven to rotate by a drive motor which can be intermittently rotated in forward and reverse directions A storage part rotatably mounted between the drive shaft and the driven shaft, the driven shaft being rotated with the rotation of the shaft and the drive shaft, and a housing portion in which the casting product is inserted from the opening and stored comprising a rotating body having an opening and closing mechanism for opening and closing the opening, and a vibration motor before Symbol rotating body vibrates said cradle mounted, the housing portion has its cross-sectional shape is a U-shaped, It can rotate freely parallel to each other through a gap through which the projection material can pass. The side wall portion and the bottom portion are formed by a free roller group consisting of a plurality of free rollers, and the opening / closing mechanism is rotatable via a gap through which the projection material can pass so as to close the opening. A closing free roller group consisting of a plurality of closing free rollers arranged in parallel, and a rotational drive for rotating the closing free roller group so as to be positioned at the closing position and the opening position of the opening And a mechanism for removing residual projection material.

  The storage portion is mounted on the drive shaft and the driven shaft, and is configured by a pair of plate members facing each other and the free roller group bridged between the pair of plate members. Each of the plurality of free rollers constituting the free roller group can be arranged in a freely rotatable manner.

  The rotation drive mechanism is rotatably provided on the outside of the storage portion, and a pair of arm members over which the blocking free roller group is bridged, and the closing free roller is a closing position of the opening The opening portion of the storage portion can be smoothly opened and closed by providing the rotation driving device for turning the pair of arm members so as to be positioned at the position of the opening and the opening.

  Two sets of the pair of arm members are provided, and the plurality of blocking free rollers constituting a part of the blocking free roller group are rotatably spanned by one set of the pair of arm members. The plurality of blocking free rollers constituting the rest of the blocking free roller group are rotatably bridged over the other set of the pair of arm members, and bridged over each pair of the arm members A storage driving unit is provided for rotating each set of the pair of arm members such that each of the closing free rollers is positioned at the closing position and the opening position of the opening. Opening and closing of the opening can be easily performed.

  Since the rotational drive device is an air cylinder, the structure of the residual projection material extraction device according to the present invention can be simplified.

The rotary drive device is an air cylinder that rotates with the housing portion, and in the air supply and discharge passage to the air cylinder, a first air hole opened on the outer peripheral surface of the driven shaft, and the driven shaft An air passage which is drilled along the central axis of the shaft and is connected to the first air hole, a stationary sleeve which is inserted into the end of the driven shaft and held against rotation, and an inner circumferential surface of the stationary sleeve A circumferential groove provided on an outer circumferential surface of an end portion of the driven shaft in sliding contact, a second air hole opened in the circumferential groove and connected to the air passage, and the circumferential groove corresponding to the circumferential groove By using an air free joint which is formed in a fixed sleeve and has an air supply and discharge port for supplying and discharging compressed air to the circumferential groove, supply and discharge of compressed air to an air cylinder rotating with the storage portion is realized. It can be done easily.

  The air cylinder is provided on the outside of each of the pair of plates, so that the pair of arm members can be reliably rotated to the predetermined position.

  The air cylinder is provided with a lock mechanism capable of holding the pair of arm members at a predetermined position when the supply of compressed air is stopped, and maintaining the closed state of the opening of the storage section by the closing free roller. Even when the supply of compressed air is stopped due to an accident or the like while rotating the storage unit storing the cast product, the cast product can be prevented from falling off from the storage unit, which is safe.

  By providing the control unit for controlling the drive motor, it is possible to control the rotation start, the rotation stop, the rotation stop time, the rotation direction, the rotation speed, and the like of the rotating body provided with the storage unit in which the casting product is stored. The residual blast material can be extracted from the hollow portion without damaging the cast product.

  According to the device for extracting residual projection material of the present invention, the casting product is stored in the storage portion in which the side wall portion and the bottom portion are constituted by the plurality of free rollers and the opening is closed by the closing free roller. It intermittently rotates while applying vibration by the vibration motor. The cast product stored in such a storage unit vibrates while changing the sliding position and direction on the free roller forming the side wall portion and the bottom portion and the closing free roller closing the opening portion as the storage portion rotates. Is granted. For this reason, when the cast product is directed in a predetermined direction, the residual projection material in the hollow part of the cast product is extracted from the opening of the hollow part, and the gap between the free rollers of the storage unit or the gap between the closing free rollers It is discharged from the storage part from the Therefore, even when the cast product is heavy, according to the device for extracting residual projectile materials of the present invention, vibration can be applied while easily changing the position and orientation of the cast product, and the hollow portion of the cast product remains. The projectile can be reliably extracted.

It is a front view showing an example of the extraction device of the residual projection material concerning the present invention. Fig.2 (a) is a front view of rotary body R shown in FIG. 1, FIG.2 (b) is sectional drawing in the AA surface of Fig.2 (a). Fig.3 (a) is sectional drawing in the XX surface shown in FIG. 1, FIG.3 (b) shows the state which the opening part of the accommodating part 32 shown to Fig.3 (a) opened. It is a piping diagram explaining the air piping to air cylinder 42a, 42b shown in FIG. It is a fragmentary sectional view explaining the structure of the air free coupling provided in the driven shaft 18b shown in FIG. It is explanatory drawing explaining the relationship between the sensor dog 90 provided in the end surface of the driven shaft 18b shown in FIG. 1, and proximity sensor 92a, 92b. FIG. 7A is a schematic view showing that a multistage acceleration mechanism and a multistage deceleration mechanism are provided in the inverter 26 shown in FIG. 1, and FIG. 7B shows a rotational speed pattern of the drive motor 24. FIG. When rotation body R shown in FIG. 2 rotates to a normal direction, it is sectional drawing of rotation body R which shows direction of casting product P in the accommodating part 32, etc. FIG. FIG. 3 is a cross-sectional view of the rotating body R showing the direction and the like of the cast product P in the housing portion 32 when the rotating body R shown in FIG. 2 rotates in the reverse direction.

  Hereinafter, the present invention will be described in detail, but the scope of the present invention is not limited thereto.

An example of the extraction apparatus of the residual projection material which concerns on this invention is shown in FIG. FIG. 1 is a front view of a device 10 for extracting residual projection material. In the extraction apparatus 10 for residual projection material, a pedestal 16 is placed on a base 12 via a plurality of rubber springs 14 as a vibration absorbing member. A pair of support bases 16a and 16b are erected on the mount 16 via a predetermined distance. The gantry 16 is vibrated by a vibration motor 40 provided at the lower part thereof.
The rubber spring 14 is a composite spring in which a rubber and a metal spring are combined, has high load performance, and has a resonance amplitude reduction effect and a soundproofing effect.

A drive shaft 18a and a driven shaft 18b are rotatably supported by bearings 22a and 22b on a pair of support bases 16a and 16b of the gantry 16. The drive motor 18 is mounted at one end of the drive shaft 18a, and the driven shaft 18b rotates with the rotation of the drive shaft 18a. The drive motor 24 can be intermittently rotated in the forward and reverse directions by the inverter 26. The inverter 26 is controlled by a PLC (Programmable Logic Controller) 25 (hereinafter referred to as PLC 25) as a control unit to control the timing for starting and stopping the rotation of the drive motor 24, the rotation stop time, the rotation time, the rotation direction and the rotation speed It is done. A rotating body R is provided between the other end of the drive shaft 18a and one end of the driven shaft 18b. The rotating body R is provided with a storage portion 32 in which a cast product is inserted from the opening and stored.
Under the rotating body R, a storage container 60 for residual projection material extracted from the hollow portion of the cast product stored in the storage portion 32 is provided.

  As shown in FIG. 2A, the housing portion 32 provided in the rotating body R is a pair of plate members 20a, 20b mounted facing the other end of the drive shaft 18a and one end of the driven shaft 18b. It is formed between. The pair of plates 20a and 20b is reinforced by reinforcing the reinforcing plate 28. The pair of plates 20a and 20b is rotatably juxtaposed between the pair of plates 20a and 20b via a gap through which the projection material can pass. A free roller group 30 composed of a plurality of free rollers 30a is bridged. The free roller group 30 forms the side wall portion and the bottom portion of the storage portion 32 having a U-shaped cross section as shown in FIG. 2B which is a cross-sectional view taken along the A-A plane of FIG. . The opening 31 for inserting and removing the cast product opened in the storage portion 32 is closed by a closing free roller group 34 including the closing free rollers 34a, 34b, 34c and 34d as shown in FIG. 2 (b). ing. The plurality of blocking free rollers constituting the blocking free roller group 34 are also rotatably arranged in parallel via a gap through which the projection material can pass.

The closing free roller group 34 is provided so as to be able to open and close the opening 31 of the storage portion 32. That is, the closing free rollers 34 a and 34 b constituting a part of the closing free roller group 34 are mounted between the pair of arm members 36 a and 36 d provided outside the storage portion 32. The pair of arm members 36a and 36d have a "V" shape, and can be pivoted to the end of the shaft 39a whose rear end portion is bridged between the pair of plates 20a and 20b. , And is reinforced by a reinforcing plate 38a which is bridged between its tips. The reinforcing plates 38a are provided with roller mounting plates 41a, 41d opposite to the positions corresponding to the tips of the pair of plates 20a, 20b, and the closing free rollers 34a, 34b are provided between the roller mounting plates 41a, 41d. Is rotatably mounted.

Further, the closing free rollers 34 c and 34 d constituting the rest of the closing free roller group 34 are also mounted between the pair of arm members 36 c and 36 b provided outside the storage portion 32. The pair of arm members 36c and 36b are also in the shape of "く", and the respective rear end portions can be pivoted to the end portion of the shaft 39b bridged between the pair of plate members 20a and 20b. , And is reinforced by a reinforcing plate 38b which is bridged between its tips. The reinforcing plates 38b are provided with roller mounting plates 41c, 41b opposite to the positions corresponding to the tips of the pair of plates 20a, 20b, and the closing free rollers 34c, 34d are provided between the roller mounting plates 41c, 41b. Is rotatably mounted.

The two pairs of arm members 36a, 36b, 36c, 36d are rotationally driven by air cylinders 42a, 42b as rotational drive devices. The air cylinder 42a is provided on the drive shaft 18a side, and the air cylinder 42b is provided on the driven shaft 18b side. FIG. 3A, which is a cross-sectional view taken along a plane XX in FIG. 1, shows an air cylinder 42b on the side of the driven shaft 18b. The air cylinder 42b is provided between the arm members 36b and 36d, and rotates the arm member 36b with the shaft 39a as a rotation center, and rotates the arm member 36d with the shaft 39b as a rotation center. Further, an air cylinder 42a provided on the drive shaft 18a side is provided between the arm members 36a and 36c, and rotates the arm member 36c with the shaft 39b as the rotation center, and the arm with the shaft 39a as the rotation center The member 36a is pivoted. The air cylinders 42a and 42b are driven in synchronization, and the opening of the storage portion 32 is made by the closing free roller group 34 bridged between the tip portions of the two pairs of arm members 36a, 36b, 36c and 36d. The unit 31 is opened and closed. FIG. 3A shows a state in which two pairs of arm members 36a, 36b, 36c, and 36d are rotated in the direction in which the opening 31 of the storage unit 32 is closed by the closing free roller group 34. 3B shows a state in which two pairs of arm members 36a, 36b, 36c, 36d are rotated in the direction to open the opening 31 of the storage unit 32 closed by the closing free roller group 34. Indicates

  Compressed air is supplied to and discharged from the air cylinders 42a and 42b via an air pipe 50 shown in FIG. The compressed air having passed through the check valve 52 is supplied to the O side or C side of the air cylinders 42a, 42b separated by the pistons via the three-way solenoid valve 54 and the speed controllers 56a, 56b, 56c, 56d. . The pressure on the O side of the air cylinders 42a and 42b is adjusted to a predetermined value by the pressure switch 58a, and the pressure on the C side of the air cylinders 42a and 42b is also adjusted to the predetermined value by the pressure switch 58b.

The three-way solenoid valve 54 has an application port to which the compressed air that has passed through the check valve 52 is always applied, a supply port that supplies the compressed air of the application port to the O side or C side of the air cylinders 42a and 42b, and air A discharge port for discharging the compressed air held on the O side or C side of the cylinders 42a and 42b, a neutral port not connected to the supply port and the discharge port, solenoid coils 54a and 54b (hereinafter simply referred to as solenoids 54a and 54b and (See below ) . The solenoids 54a and 54b are connected to either the supply port or the discharge port of the three-way solenoid valve 54 and either the O side or the C side of the air cylinders 42a and 42b, or the neutral port of the three-way solenoid valve 54 and the air cylinder 42a. , 42b are connected to the O side and the C side.

  When the supply ports of the three-way solenoid valve 54 and the O side of the air cylinders 42a and 42b are connected by the solenoids 54a and 54b, simultaneously the discharge ports of the three-way solenoid valve 54 and C of the air cylinders 42a and 42b. Both sides are connected. Therefore, the compressed air at the application port of the three-way solenoid valve 54 is supplied from the supply port to the O side of the air cylinders 42a and 42b while adjusting the supply amount by the speed controllers 56a and 56b, and at the same time, the air cylinders 42a and 42b. The compressed air held on the C side of the valve is discharged from the discharge port of the three-way solenoid valve 54 while the discharge amount is adjusted by the speed controllers 56c and 56d. In this case, the pistons in the air cylinders 42a and 42b move to the C side, and as shown in FIG. 3A, two sets of the closing free roller group 34 are used to close the opening 31 of the storage portion 32. The pair of arm members 36a, 36b, 36c, 36d can be turned.

On the other hand, when the supply ports of the three-way solenoid valve 54 and the C side of the air cylinders 42a and 42b are connected by the solenoids 54a and 54b, the discharge ports of the three-way solenoid valve 54 and the air cylinders 42a and 42b simultaneously. The pistons in the air cylinders 42a and 42b move to the O side, and as shown in FIG. 3B, the opening 31 of the storage portion 32 closed by the closing free roller group 34. The two pairs of arm members 36a, 36b, 36c, 36d can be turned so as to open.
When the neutral port of the three-way solenoid valve 54 is connected to the O side and C side of the air cylinders 42a and 42b by the solenoids 54a and 54b, the pressure on the O side and C side of the air cylinders 42a and 42b is predetermined. Held at the value, the piston rests in position. In this case, the two pairs of arm members 36a, 36b, 36c and 36d are in a stationary state.

Normally, when rotating the rotary body R, the neutral port of the three-way solenoid valve 54 is connected to the O side and C side of the air cylinders 42a and 42b by the solenoids 54a and 54b, and the opening 31 of the storage portion 32 is The closed state is maintained by the closing free roller group 34.
However, even when the supply of compressed air is stopped due to an accident or the like while the rotating body R is rotating, two sets of the opening portion 31 of the storage portion 32 are maintained to be closed by the closing free roller group 34. Using air cylinders 42a and 42b provided with a lock mechanism capable of holding the pair of arm members 36a, 36b, 36c and 36d at predetermined positions and keeping the opening 31 of the storage unit 32 closed by the closing free roller group 34 Is preferred.

  By the way, the supply and discharge of the compressed air to the air cylinders 42a and 42b provided on the rotating body R is performed via the air free joint 70 shown in FIG. 5 provided on the other end of the driven shaft 18b. The air free joint 70 is connected to the first air holes 72a and 72b opened in the outer peripheral surface of the other end of the driven shaft 18b, and the air passages 74a and 74b are provided along the central axis of the driven shaft 18b. The fixed sleeve 78 mounted on the tip of the driven shaft 18b at the tip end than the bearing 22b and held by the ring member 76 erected on the rack 16, and the end of the driven shaft 18b slidingly contacting the inner circumferential surface of the fixed sleeve 78 The second air holes 82a and 82b opened in the circumferential grooves 80a and 80b and the second air holes 82a and 82b connected to the air passages 74a and 74b and the circumferential grooves 80a and 80b are provided in the outer circumferential surface of the portion. Correspondingly, the fixed sleeve 78 is provided with air supply ports 84a and 84b for supplying and discharging compressed air to the circumferential grooves 80a and 80b. Each of the circumferential grooves 80a, 80b is formed and sealed between the O-rings 86, 86, 86, and the first air holes 72a, 72b and the air cylinders 42a, 42b are provided in the rotating body R. It is connected by piping.

  According to such an air free joint 70, by connecting a compressed air supply / discharge pipe from the outside to the air supply ports 84a and 84b of the stationary sleeve 78 in a stationary state, a follower rotated from the air supply ports 84a and 84b The compressed air supplied to the circumferential grooves 80a and 80b of the shaft 18b is passed from the second air holes 82a and 82b opened in the circumferential grooves 80a and 80b to the end of the driven shaft 18b via the air passages 74a and 74b. It reaches the first air holes 72a and 72b opened in the outer peripheral surface of the portion. Compressed air is supplied to and discharged from the air cylinders 42a and 42b from the first air holes 72a and 72b via piping provided in the rotating body R.

As a detection means for detecting the rotational position of the rotary body R, as shown in FIG. 5, a projecting member 90 for a sensor mounted on the end face of the driven shaft 18b provided with the air free joint 70 (hereinafter referred to as a sensor dog 90). And proximity sensors 92a and 92b are used. As shown in FIGS. 6A and 6B, in the sensor dog 90, the projections 90a, 90b, 90c, and 90d are projected in a cross shape, and the projection 90a protrudes longer than the other projections. Further, among the proximity sensors 92a and 92b that transmit detection signals to the PLC 25 (FIG. 1), the proximity sensor 92a is disposed at a position where the protrusions 90a, 90b, 90c, and 90d are detected, and the proximity sensor 92b is long. It is arrange | positioned by the position which detects only the projection part 90a. Therefore, both the proximity sensors 92a and 92b can detect the long protrusion 90a, and only the proximity sensor 92a can detect the protrusions 90b, 90c, and 90d.

For example, as shown in FIG. 6A, when the projection 90a of the sensor dog 90 is at the position of the proximity sensors 92a and 92b, both of the proximity sensors 92a and 92b detect the projection 90a, and the detection signal is sent to the PLC 25. It is sending. In this state, the rotating body R starts rotating, and the rotating body R rotates approximately 45 °, and the protrusions 90a, 90b, 90c, 90d of the sensor dog 90 are 90 ^, a, 90 ^, b, 90 ^, c, 90 ^, d When in the position of, the proximity sensors 92a and 92b can not detect any of the protrusions. Further, when the rotating body R rotates and the projection 90d of the sensor dog 90 reaches the position of the proximity sensor 92a as shown in FIG. 6B, the proximity sensor 92a detects the projection 90d and a detection signal Is transmitted to the PLC 25, but the proximity sensor 92b can not detect any of the protrusions, so the PLC 25 can detect that the rotating body R has rotated 90.degree. From the position shown by the solid line in FIG. 5A.

  The PLC 25 to which the detection signal is transmitted from each of the proximity sensors 92a and 92b is shown in FIG. 5 (b) from the position where the detection signal is transmitted from both the proximity sensors 92a and 92b as shown in FIG. Thus, when the rotating body R rotates 90 ° in the positive direction and receives a detection signal from only the proximity sensor 92a, the inverter 26 transmits a signal obtained by rotating the rotating body R in the positive direction by 90 ° and receives the signal The inverter 26 stops driving the drive motor 24 (FIG. 1). Next, when a predetermined time has passed by the timer in the PLC 25, the inverter 26 redrives the drive motor 24 with a signal from the PLC 25 and restarts the forward rotation of the rotating body R. As described above, the PLC 25 and the inverter 26 intermittently drive the drive motor 24 in the positive direction and intermittently rotate the rotating body R in the positive direction by 90 °. The PLC 25 that has received the detection signals from both of the proximity sensors 92a and 92b again transmits to the inverter 26 a signal in which the rotating body R has rotated 360 ° in the positive direction, and the inverter 26 that receives the signal drives the drive motor 24. It stops and the rotation of the rotating body R in the forward direction is ended.

  When the timer in the PLC 25 elapses a predetermined time after the completion of the forward rotation, the inverter 26 drives the drive motor 24 in the reverse direction by the signal from the PLC 25 and starts the reverse rotation of the rotating body R . The PLC 25 that receives the detection signal from only the proximity sensor 92a by rotating the rotating body R by 90 ° in the reverse direction transmits a signal, which is obtained by rotating the rotating body R by 90 ° in the reverse direction, to the inverter 26, and the signal The inverter 26 receives the signal to stop driving the drive motor 24. Then, when a predetermined time has passed by the timer in the PLC 25, the inverter 26 redrives the drive motor 24 with a signal from the PLC 25 and restarts the reverse rotation of the rotating body R. Thus, the PLC 25 and the inverter 26 intermittently drive the drive motor 24 in the reverse direction to intermittently rotate the rotating body R in the reverse direction by 90 °. The PLC 25 that has received the detection signals from both of the proximity sensors 92a and 92b again transmits to the inverter 26 a signal in which the rotating body R has rotated 360 ° in the reverse direction to the inverter 26, and the inverter 26 that receives the signal outputs the drive motor 24. The driving is stopped and the rotation of the rotating body R in the reverse direction is ended.

The PLC 25 and the inverter 26 control the drive start, drive stop and rotation direction of the drive motor 24, and have a multistage acceleration mechanism and a multistage reduction mechanism in the inverter 26 as shown in FIG. 7A. preferable.
The multistage acceleration mechanism is a mechanism that gradually accelerates the drive motor 24 whose drive has been started within a predetermined time to have a constant rotational speed. Further, the multistage reduction mechanism is a mechanism for gradually decelerating the drive motor 24 driven at a constant speed rotational speed within a predetermined time to be in a stop state. According to the inverter 26 having such a multistage acceleration mechanism and multistage reduction mechanism, the rotational speed of the drive motor 24 is gradually accelerated from the start of the drive as shown in FIG. After the constant speed rotation speed is maintained for a predetermined time, it can be decelerated gradually to be in the stop state. By setting the rotational speed of the drive motor 24 to the pattern shown in FIG. 6B, the position and orientation of the cast product stored in the storage portion 32 of the rotating body R can be gradually changed, and the position and orientation of the cast product It is possible to prevent the damage caused by changing the

  The method of extracting the residual projection material in the hollow portion of the cast product P using the residual projection material extraction device described in FIGS. 1 to 7 will be described with reference to FIGS. 8 and 9. First, the air cylinders 42a and 42b are driven to open the opening 31 of the storage portion 32 closed by the closing free roller group 34 as shown in FIG. 3B, and then as shown in FIG. 8A. The cast product P is stored in the storage portion 32 from the opening 31. The cast product P has a rectangular cross section, and the hollow portion is opened on the upper surface and one side of the side surface, and the residual projection material S is present in the hollow portion.

Next, the air cylinders 42a and 42b are driven again, and the opening 31 of the storage portion 32 is closed by the closing free roller group 34 as shown in FIG. As shown in), the rotating body R including the housing portion 32 housing the casting product P is started to rotate in the forward direction (the direction of the arrow M). Since the vibration motor 40 (FIG. 1) is activated simultaneously with the start of rotation of the rotating body R and the frame 16 vibrates, the casting product P stored in the storage portion 32 of the rotating body R is also vibrated In accordance with the above, the direction and the position are changed by sliding on the free roller 30a of the free roller group 30. In order to gradually change the direction and position of the cast product P, as shown in FIG. 7 (b), the rotational speed of the rotating body R is gradually accelerated from the start of rotation to a constant rotational speed, and constant rotational speed Is preferably maintained for a predetermined time, and then gradually decelerated to a stop state.
The vibration motor 40 is continuously driven until the extraction operation of the residual projection material S in the hollow portion of the cast product P is completed.

  As shown in FIG. 8C, when the rotating body R rotates by 90 ° in the forward direction and only the proximity sensor 92a (FIG. 6B) detects the projection 90d of the sensor dog 90, the rotating body R temporarily moves Stop. While the rotating body R is temporarily stopped, the vibration motor 40 is driven, and the rotating body R continues to be vibrated. The cast product P shown in FIG. 8 (c) is also turned 90 ° from the direction of the cast product P when stored in the housing portion 32 shown in FIG. 8 (b). The part is not opened, and the residual projection material S can not be extracted into the hollow part.

Furthermore, when the pause time has elapsed, the rotation of the rotating body R in the positive direction is resumed. As shown in FIG. 8D, the rotating body R is further rotated by 90 °, and the rotation of the rotating body R is temporarily stopped. The bottom of the housing portion 32 of the rotating body R shown in FIG. 8D is formed by the closing free roller group 34, and the casting product P is also housed in the housing portion 32 shown in FIG. 8B. It is turned 180 ° from the direction of the cast product P when being cast. The cast product P in such a direction has a hollow portion opened in the lower surface, and the residual projection material S in the hollow portion is extracted, and the storage portion 32 is removed from the gap of the closing free roller group 34. And stored in the storage container 60 (FIG. 1).

  Again, when the pause time has elapsed, the rotation of the rotating body R in the positive direction is resumed, and the rotating body R is further rotated by 90 ° as shown in FIG. 8 (e) to temporarily rotate the rotating body R. Stop. The housing portion 32 of the rotating body R shown in FIG. 8E is in a state in which the bottom portion is formed by the free roller group 30 forming the side surface of the housing portion 32 in FIG. The orientation of the cast product P when it is stored in the storage portion 32 shown in FIG. 8 (d) is rotated by 90 °. The cast product P in such a direction has a hollow portion opened at the lower surface, and the residual projection material S in the hollow portion is extracted and discharged out of the storage portion 32 from the gap of the free roller group 30. And stored in the storage container 60.

  When the pause time has elapsed, the rotation of the rotating body R in the positive direction is started again, the rotating body R is further rotated by 90 °, and when the state of FIG. 9A is reached, the proximity sensors 92a and 92b ( Both (a) of FIG. 6 detect the projection 90 a of the sensor dog 90, and the rotating body R is temporarily stopped. The cast product P in the storage portion 32 shown in FIG. 9A is rotated on the upper surface and one side of the side surface by the rotation of the rotating body R in the forward direction shown in FIGS. 8B to 8E. There is almost no residual projection material inside the open hollow portion, but when the temporary stop time has elapsed, the rotating body R is moved to complete removal of the residual projection material S in the hollow portion. As shown in FIG. 9A, it rotates in the reverse direction (arrow N direction). Similar to the rotation in the forward direction shown in FIGS. 8 (b) to 8 (e), the rotation in the reverse direction of the rotating body R is intermittently rotated by 90 ° while being vibrated by the vibration motor 40. is there.

  FIG. 9 (b) shows a state where the rotating body R is rotated 90 ° in the reverse direction and temporarily stopped, and if the remaining projection material S remains in the hollow portion opened in the lower surface of the cast product P, it is extracted. Be FIG. 9 (c) is a state in which the rotating body R is rotated 90 ° in the reverse direction from the state shown in FIG. 9 (b) and temporarily stopped, and projection remains in the hollow portion opened in the lower surface of the cast product P. If the material S remains, it is extracted. FIG. 9 (d) is a state where it is temporarily stopped by rotating 90 ° in the reverse direction from the state shown in FIG. 9 (c), and there is no hollow portion opened in the lower surface of the cast product P; Residual projectile S can not be extracted. After rotating in the reverse direction by 90 ° from the state shown in FIG. 9 (d) and again in the state shown in FIG. 9 (a), the extraction operation of the residual projection material S in the hollow portion of the casting product P is completed. The driving of the drive motor 24 and the vibration motor 40 is stopped.

  Next, the air cylinders 42a and 42b are driven to open the opening 31 of the storage portion 32 closed by the closing free roller group 34 as shown in FIG. 3 (b), and as shown in FIG. 9 (e) The cast product P in the storage portion 32 is taken out from the opening 31. There is no residual projection material S in the hollow portion of the cast product P.

  According to the device for extracting residual projection material shown in FIGS. 1 to 9, the cast product P stored in the storage portion 32 formed by the free roller group 30 and the closing free roller group 34 is intermittently applied while applying vibration to the cast product P Because of the rotation, the residual projectile in the hollow portion of the casting product P is extracted from the opening of the hollow portion when the casting product P is directed in a predetermined direction. Therefore, even when the cast product P is heavy, vibration can be applied while easily changing the position and orientation of the cast product P, and residual projection material in the hollow portion of the cast product P can be reliably extracted.

  The extraction apparatus of the residual projectile material of the present invention can be used as an apparatus for extracting the residual projectile material remaining in the hollow portion subjected to blast polishing on the inner wall surface from the cast product.

  DESCRIPTION OF SYMBOLS 10: Extraction device, 12: Base, 14: Rubber spring, 16: Mounting frame, 16a, 16b: A pair of support stand, 18a: Drive shaft, 18b: Followed shaft, 20a, 20b: Plate, 22a, 22b: Bearings 24: Drive motor 25: PLC 26: Inverter 28: Reinforcement plate 30: Free roller group 30a: Free roller 31: Opening 32: Storage section 34: Blocking free roller group 34a , 34b, 34c, 34d: free rollers for closing, 36a, 36b: pair of arm members, 36c, 36d: pair of arm members, 38a, 38b: reinforcing plate, 39a, 39b: shaft, 40: vibration motor, 41a, 41b, 41c, 41d: roller mounting plate, 42a, 42b: air cylinder, 50: air piping, 52: check valve, 54: three-way solenoid valve, 54a, 54b: Renoid 56a, 56b, 56c, 56c, 56d: Speed controller, 58a, 58b: Pressure switch, 60: Containment container, 70: Air free joint, 72a, 72b: Air hole, 74a, 74b: Air passage, 76: Ring Members 78: fixed sleeves 80a: circumferential grooves 82a, 82b: air holes 84a, 84b: air supply ports 86: O-rings 90: sensor dog 90a, 90b, 90c, 90d: protrusions, 92a, 92b: proximity sensor, M, N: arrow, P: casting product, Q: control unit, R: rotating body, S: residual projection material

Claims (9)

The apparatus for blasting and polishing the inner wall surface of a hollow portion opened to the surface of a cast product and extracting the projection material remaining in the hollow portion from the hollow portion is:
A stand mounted via a vibration absorbing member on a base, a drive motor rotatably supported on a pair of support stands erected through a predetermined distance, and capable of being intermittently rotated in forward and reverse directions A drive shaft which is driven to rotate, a driven shaft which rotates with the rotation of the drive shaft, and the drive shaft and the driven shaft are rotatably mounted, and the cast product is inserted from the opening and stored A rotating body having an opening and closing mechanism for opening and closing the opening, and a vibration motor for vibrating the frame on which the rotating body is mounted;
The storage section is a free roller group consisting of a plurality of free rollers which are U-shaped in cross section and rotatably arranged side by side with a gap through which the projection material can pass, and the side wall section and the bottom section Is formed,
And the opening / closing mechanism is a closing free roller group including a plurality of closing free rollers rotatably arranged in parallel via a gap through which the projection material can pass so as to close the opening. And a rotating drive mechanism for rotating the closing free roller group so as to be located at the closing position and the opening position of the opening.   The storage portion is mounted on the drive shaft and the driven shaft, and includes a pair of plate members facing each other and the free roller group bridged between the pair of plate members. The extraction apparatus of the residual projection material of Claim 1 characterized by the above-mentioned. The rotation drive mechanism is rotatably provided outside the storage unit, and a pair of arm members over which the closing free roller group is bridged;
2. The apparatus according to claim 1, further comprising: a rotation drive unit configured to rotate the pair of arm members such that the closing free roller group is positioned at the closing position and the opening position of the opening. The extraction apparatus of the residual projection material of claim 2.   Two sets of the pair of arm members are provided, and the plurality of blocking free rollers constituting a part of the blocking free roller group are rotatably spanned by one set of the pair of arm members. The plurality of blocking free rollers constituting the rest of the blocking free roller group are rotatably bridged over the other set of the pair of arm members, and bridged over each pair of the arm members A rotation drive device is provided for rotating each set of the pair of arm members such that each of the closing free rollers is located at the closing position and the opening position of the opening. A device for extracting residual projection material according to claim 3   The device for extracting residual projection material according to claim 3 or 4, wherein the rotational drive device is an air cylinder.   The rotary drive device is an air cylinder that rotates with the housing portion, and in the air supply and discharge passage to the air cylinder, a first air hole opened on the outer peripheral surface of the driven shaft, and the driven shaft An air passage which is drilled along the central axis of the shaft and is connected to the first air hole, a stationary sleeve which is inserted into the end of the driven shaft and held against rotation, and an inner circumferential surface of the stationary sleeve A circumferential groove provided on an outer circumferential surface of an end portion of the driven shaft in sliding contact, a second air hole opened in the circumferential groove and connected to the air passage, and the circumferential groove corresponding to the circumferential groove The residual projection material according to claim 4 or 5, characterized in that an air free joint formed on a fixed sleeve and having an air supply / discharge port for supplying / discharging compressed air to said circumferential groove is used. Extraction device.   The device for extracting residual projection material according to claim 5 or 6, wherein the air cylinder is provided on the outer side of each of the pair of plates.   The air cylinder is provided with a lock mechanism capable of holding the pair of arm members at a predetermined position when the supply of compressed air is stopped, and maintaining the closing of the opening of the storage section by the closing free roller. The extraction apparatus of the residual projection material as described in any one of Claims 5-7 characterized by the above-mentioned.   The control unit which controls the said drive motor is provided, The extraction apparatus of the residual projection material as described in any one of the Claims 1-9 characterized by the above-mentioned.

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