JP5984532B2 - Work surface treatment equipment - Google Patents

Description

  The present invention relates to a workpiece surface treatment apparatus.

  For example, vibration-proof metal fittings used for automobile engine mounts and suspensions are made by bonding a synthetic resin member (rubber) to a predetermined position of a metal member. It is necessary to roughen and clean the surface of the portion in advance in order to improve the adhesion with the synthetic resin member.

  Therefore, the present applicant has proposed a surface treatment apparatus (hereinafter, a conventional example) as disclosed in JP-A-2007-38309 as an apparatus for roughening and cleaning the surface of the metal member.

  In this conventional example, a slurry, which is a mixture of liquid and abrasive grains, is sprayed onto a metal member to blast the surface of the metal member. It is housed in a cage-shaped barrel (rotary drum) having holes formed therein, and this barrel is rotated to spray a slurry while rolling a metal member in the barrel, and is blasted. The surface of the metal member is roughened and cleaned.

  Therefore, in this conventional example, since the slurry can be uniformly collided with the metal member by rotating the barrel, roughening and cleaning of various types of metal members can be performed quickly and reliably regardless of the shape of the metal members. Can be made.

JP 2007-38309 A

  By the way, in recent years, with the demand for weight reduction of automobile bodies, with the advancement of casting technology, there is an increasing demand to switch this metal member from a conventional steel forging to a light aluminum casting. Since this aluminum casting is easy to form a complicated shape, it is said that a metal member which has conventionally been formed by combining a plurality of members can be integrally formed, and improvement in productivity can be expected.

  However, in the conventional example, when the metal member to be surface-treated is an aluminum cast product, as described above, the metal member tends to be large and complicated because it is an integrally formed product. There is a concern that the metal input may be reduced and productivity may be reduced, and metal members may collide with each other during rotation of the barrel to cause scratches, dents, and deformation.

  As a result of repeatedly conducting various experiments and researches, the present inventor has developed an epoch-making workpiece surface treatment apparatus that exhibits unprecedented effects.

  The gist of the present invention will be described with reference to the accompanying drawings.

A workpiece surface treatment apparatus that blasts the surface of a workpiece 1 by injecting a slurry 4 that is a mixture of a liquid 2 and abrasive grains 3 onto the workpiece 1, and conveys the workpiece 1 in a suspended state. 5, and a slurry injection unit 6 for injecting the slurry 4 onto the workpiece 1 conveyed by the workpiece conveyance unit 5 to blast the surface of the workpiece 1. Further, the slurry injection unit 6 has a workpiece swing restraining body 7 that restrains the workpiece 1 from swinging due to the slurry 4 injected to the workpiece 1, and the workpiece swing restraining body 7 is in contact with the workpiece 1. The workpiece surface treatment is characterized in that the workpiece 1 is prevented from swinging, and the workpiece contact portion 7a of the workpiece swing suppressing body 7 is formed of a member having moderate flexibility. Related to equipment A.

Further, in the work surface treatment apparatus according to claim 1, before Kiwa chromatography click abutment 7a is according to the work surface treatment apparatus, wherein said a planar member covering the workpiece 1.

Moreover, the workpiece | work surface treatment apparatus of any one of Claim 1, 2 concerns on the workpiece | work surface treatment apparatus characterized by the said workpiece | work contact part 7a being urethane .

  The workpiece surface treatment apparatus according to any one of claims 1 to 3, wherein the workpiece transport unit 5 is provided with a workpiece holder 8 that holds the workpiece 1 in a suspended state. Reference numeral 8 relates to a workpiece surface treatment apparatus which is configured to be horizontally rotatable.

  5. The workpiece surface treatment apparatus according to claim 4, wherein the slurry injection unit 6 injects the slurry 4 at a position shifted in a horizontal direction from a horizontal rotation center of the workpiece 1 and in a direction in which the workpiece 1 is horizontally rotated. The present invention relates to a workpiece surface treatment apparatus characterized by being configured to do so.

  The workpiece surface treatment apparatus according to any one of claims 1 to 5, wherein the slurry injection unit 6 is configured to inject the slurry 4 in a vertical direction. apparatus.

[Claim 7]
In the work surface treatment apparatus according to any one of claims 1 to 6, wherein the workpiece 1 are those according to the work surface treatment apparatus which is a metal member formed by aluminum casting.

Further, in the work surface treatment apparatus according to any one of claims 1 to 7, wherein the workpiece 1 relates to a work surface treatment apparatus which is a metal member which synthetic resin member is bonded to the predetermined position It is.

  Since the present invention is configured as described above, the surface of the workpiece can be satisfactorily processed without damaging the workpiece, and the surface treatment can be performed easily and quickly. It becomes an epoch-making workpiece surface treatment device that demonstrates the effect.

It is a schematic explanatory drawing of the workpiece | work surface treatment apparatus which concerns on a present Example. It is explanatory drawing of the principal part of a present Example. It is operation | movement explanatory drawing of the principal part of a present Example. It is operation | movement explanatory drawing of the principal part of a present Example. It is explanatory drawing of the principal part of a present Example.

  An embodiment of the present invention which is considered to be suitable will be briefly described with reference to the drawings showing the operation of the present invention.

  The workpiece 1 is conveyed by the workpiece conveyance unit 5, and the slurry 4, which is a mixture of the liquid 2 and the abrasive grains 3, is ejected from the slurry injection unit 6 to the workpiece 1 conveyed by the workpiece conveyance unit 5. Blast the surface. At this time, the abrasive grains 3 constituting the slurry 4 are carried by the liquid 2 and collide with the surface of the work 1, and the surface of the work 1 is roughened and cleaned by the collision of the abrasive grains.

  In addition, the present invention has a structure in which the slurry 4 is jetted onto the workpiece 1 conveyed in a suspended state by the workpiece conveyance unit 5, and the workpiece 1 does not collide with each other as in the conventional example described above. Damage to the battery is prevented.

  By the way, in the present invention, when the slurry 4 is jetted onto the workpiece 1 conveyed in the suspended state, the workpiece 1 is swung by the slurry 4 jetted from the slurry jetting unit 6 to the workpiece 1. A work swing restraining body 7 for restraining is provided.

  This is because the workpiece 1 swings due to the injection pressure of the slurry 4 accompanied with the liquid 2, and the workpiece 1 drops or breaks from, for example, the suspended portion, or is transported by the workpiece transport unit 5. Adjacent workpieces 1 collide with each other and are damaged (there is a requirement to transport a plurality of workpieces 1 in proximity to each other for reasons of processing efficiency and downsizing of the apparatus itself), or workpieces. There are concerns about problems such as when the slurry 4 collides unevenly with respect to 1 and the surface treatment is not performed satisfactorily. However, in this respect, the present invention reliably secures these problems by having the above-described configuration. Can be resolved.

  Therefore, the surface of the work 1 can be satisfactorily treated without damaging the work 1, and the surface treatment can be performed easily and quickly.

  Specific embodiments of the present invention will be described with reference to the drawings.

  The present embodiment is a workpiece surface treatment apparatus that sprays a slurry 4 that is a mixture of a liquid 2 and abrasive grains 3 onto a workpiece 1 to wet-blast the surface of the workpiece 1.

In the present embodiment, the workpiece 1 is integrally formed by aluminum casting, and is a metal member (vibration-proof fitting that is an automobile part) to which a synthetic resin member is bonded at a predetermined position. A hole 1a that is essential in terms of function is formed, and the hole 1a is used to be suspended and locked by a workpiece holder 8 in a workpiece transfer section 5 described later.

  Specifically, the workpiece surface treatment apparatus performs a wet blasting process and other processes on the workpiece conveying section 5 that conveys the workpiece 1 and the workpiece 1 conveyed by the workpiece conveying section 5 as shown in FIG. And a work processing unit 15 to perform.

  As shown in FIGS. 1, 3, and 4, the workpiece transfer unit 5 is configured by providing a workpiece holder 8 that holds the workpiece 1 in a suspended state on a movable structure 9 provided on a box-shaped base (not shown). It is.

  The moving structure 9 is composed of a rectangular tube-shaped guide portion 10 provided laterally on the base body and having a lower opening portion 10a, and a long moving member 11 provided in a side-by-side state within the guide portion 10. .

A wheel portion 11a for rolling the guide portion 10 is provided at a portion where the workpiece holder 8 is suspended at a predetermined position of the moving member 11, and the moving member 11 is illustrated via the wheel portion 11a. The guide unit 10 is provided so as to be movable in the length direction (horizontal direction) of the guide unit 10 by driving of an omitted drive source. Although not shown the moving structure 9 (guide portion 10 and the moving member 11) is provided in an annular shape viewed from the flat surface Direction, therefore, the workpiece holding member provided on the mobile structure 9 8 is a constant location within the base body in circulation to Rukoto.

  In addition, a plurality of workpiece holders 8 are arranged on the moving member 11 at intervals.

Therefore, the workpiece 1 to be processed is suspended from each workpiece holder 8 and continuously conveyed from one side (upstream side) of the base to the other side (downstream side). work 1 will be handled by the workpiece processing unit 15 described later in a state suspended in the workpiece holder 8, for example, compared to the case of transporting the workpiece 1 in a sandwich state, it is possible to reduce the area to be concealment come, good treatment to every nook and corner of the workpiece 1 as much as possible is performed.

  In addition, when the workpiece 1 is processed by the workpiece processing unit 15 described later, the workpiece transfer unit 5 is configured to intermittently transfer the workpiece 1 at that position temporarily during the processing.

  The work holding body 8 is a long rod-like body formed of an appropriate metal member as shown in FIGS. 1 to 4, and a first member 8 a that is suspended and connected to a predetermined position of the moving member 11, It is comprised by the lower end part of the one member 8a, and the 2nd member 8b connected so that shaft rotation is possible.

  A hook-shaped portion 8c is provided at the lower end portion of the second member 8b, and the hook-shaped portion 8c is configured as a locking portion 8c for hanging and locking the workpiece 1 using the hole 1a of the workpiece 1. Has been.

  A large-diameter gear 12 is provided above the second member 8b.

The gear 12 is a predetermined position of the work processing portion 15 (wet blasting unit 15A, the cleaning unit 15B and the cleaning liquid removing portion 15C) engaged with the driving gear 13 of is that diameter small provided, by the drive of the drive gear 13 It is configured to rotate.

Accordingly, the workpiece holder 8, when located in a predetermined position of the work processing portion 15 by the movement of the moving member 11 according to the moving structure 9 moves horizontally, the workpiece holder 8 together to stop, tooth wheel 12 engages the drive gear 13, the teeth wheel 12 is rotating, word over click 1 will rotate (pivot) in the horizontal direction in the work processing portion 15.

  Note that the horizontal rotation of the work 1 is not limited to the shaft rotation, and may be a revolving rotation that rotates around the rotation center.

  The workpiece 1 conveyed by the workpiece conveying unit 5 is subjected to wet blasting and other processes by the workpiece processing unit 15 during the conveyance.

  Specifically, the work processing unit 15 includes a wet blast processing unit 15A, a cleaning unit 15B, and a cleaning liquid removing unit 15C.

  As shown in FIG. 1, the wet blast processing unit 15 </ b> A is disposed in a base body through which the work 1 passes, and includes a slurry injection unit 6, and a slurry storage unit 16 disposed below the slurry injection unit 6. And a slurry transport unit 18 for transporting the slurry 4 from the slurry storage unit 16 to the slurry injection unit 6 via the pump device 17. The slurry 4 injected from the slurry injection unit 6 is sent to the slurry storage unit 16. And reused.

  As shown in FIG. 1, the slurry injection unit 6 includes a plurality of injection nozzles 6 a arranged in the vicinity of the workpiece 1 conveyed by the workpiece conveyance unit 5.

  Each of the spray nozzles 6a is connected to the slurry transport unit 18 described above, and is connected to a compressed air transport unit 19a provided in a separate circuit and extending from the compressed air supply unit 19. The slurry 4 to be supplied is accelerated by the compressed air supplied from the compressed air conveying section 19a, and is injected from the injection nozzle 6a at a predetermined injection speed.

  Further, as shown in FIGS. 1, 3, and 4, a plurality of (four) each injection nozzle 6 a is provided at an upstream position in the conveyance direction of the workpiece 1, and a plurality of injection nozzles 6 a are provided at a downstream position with a predetermined interval from this upstream position. (Four) are provided, and each injection nozzle 6a at the upstream position is arranged above the work 1 and is configured to inject the slurry 4 in an inclined direction from above to below the work 1, while downstream Each injection nozzle 6a at a position is arranged below the work 1 and is configured to inject the slurry 4 in an inclined direction from below to above the work 1.

  The slurry injection unit 6 (the upstream injection nozzles 6a and the downstream injection nozzles 6a) is configured to be swingable in the hanging direction (vertical direction) of the workpiece 1 via the link device 28. ing.

  Therefore, the slurry 4 can be jetted in the vertical direction with respect to the workpiece 1 rotating (rotating), and the slurry 4 can be uniformly collided with the entire surface of the workpiece 1 for processing.

  Further, the slurry injection unit 6 (the respective injection nozzles 6a at the upstream position and the respective injection nozzles 6a at the downstream position) is shifted from the horizontal rotation center of the work 1 as shown in FIG. The slurry 4 is jetted in the direction of horizontal rotation.

  Therefore, the slurry injecting unit 6 injects the slurry 4 with respect to the work 1 in the direction of the horizontal rotation of the work 1 in a follow-up state, and from this configuration, the work 1 does not swing more than necessary and is stable. It will rotate horizontally in the state. In contrast to this, the present inventor has confirmed this point, and on the contrary, when the slurry 4 is jetted against the work 1 in the attacking state opposite to the rotation direction of the work 1, the work 1 swings. It has also been confirmed that it becomes difficult to stabilize. Further, the horizontal rotation of the work 1 is assisted by the injection of the slurry 4, and the work 1 may be rotated horizontally only by the injection of the slurry 4.

  In addition, a workpiece swing suppression body 7 is provided that suppresses the workpiece 1 from swinging by the slurry 4 injected from the slurry injection unit 6 to the workpiece 1.

  Specifically, the workpiece swing suppressing body that suppresses the movement of the workpiece 1 in the injection direction by contacting the portion of the workpiece 1 where the slurry 4 is injected and the portion on the back side at the injection opposing position of the slurry injection unit 6. 7 is provided.

  The workpiece swing suppression body 7 is a dome-like semi-cylindrical cover body formed of an appropriate metal member (stainless steel) as shown in FIG. The workpiece contact portion 7a that contacts the workpiece 1 is made of a member (urethane sheet material) having appropriate flexibility.

  The workpiece contact portion 7a is a planar body that covers the workpiece 1, and is surrounded by one workpiece swing suppressing body 7 with respect to one workpiece 1 (the top surface side, the back surface side, and the left and right side surfaces of the workpiece 1). It is comprised so that it may cover.

  A plurality of workpieces 1 may be supported by a single workpiece swing suppression body 7, but must be set at an interval at which adjacent workpieces 1 do not collide with each other. It is better to cover them individually considering scattering.

  Further, the workpiece swing suppression body 7 is provided so as to be movable up and down via a lifting body 20 provided on the base, and the workpiece 1 transported by the workpiece transport section 5 is stopped at a position opposite to the slurry injection section 6. At this time, it is disposed at a position on the back side of the workpiece 1 by lowering and making it the spraying opposed position of the slurry spraying unit 6.

  At this time, the moving range and the installation position of the elevating body 20 are appropriately set so that the workpiece contact portion 7a is close to the workpiece 1.

  Reference numeral 7 b ′ is a recess provided in the top portion 7 b for avoiding the work holder 8.

  Further, the slurry 4 used in this embodiment is a mixture of the liquid 2 and the abrasive grains 3.

  Water is used as the liquid 2, and stainless particles (stainless grid) are used as the abrasive grains 3.

  As the abrasive grains 3, alumina, ceramic, glass, resin, etc., as well as stainless steel, are appropriately employed.

  Further, the wet blast processing unit 15A is provided with a rough cleaning unit 21 for rough cleaning by applying a cleaning liquid from the cleaning nozzle 21a to the workpiece 1 immediately after being processed by the slurry injection unit 6 at a position downstream of the slurry injection unit 6. It has been.

  As shown in FIG. 1, the cleaning liquid sprayed from the rough cleaning section 21 is generated by the cleaning liquid generating section 22 which is branched from the slurry transport section 18 and into which a part of the slurry 4 is introduced, and flows in a spiral shape in the slurry 4. Thus, it is water (low concentration slurry containing fine abrasive grains and polishing powder) obtained by separating (classifying) the slurry 4 with high concentration.

  The cleaning liquid production unit 22 is constituted by a processing container into which the slurry 4 is introduced from the slurry transport unit 18.

  This processing container is a vertically long cylindrical body, and the slurry 4 introduced from the slurry introduction part 22a provided at the upper side position of the processing container passes through while generating a spiral flow from above to below. A first deriving portion 22b for deriving a cleaning liquid (low concentration slurry), which is water produced by centrifugal separation, is provided at the upper end of the processing container, while a high concentration slurry 4 is derived at the lower end. Two lead-out portions 22c are provided.

  The cleaning liquid derived from the first deriving unit 22b is sent to the rough cleaning unit 21 via the cleaning liquid transport pipe 23, while the slurry 4 derived from the second deriving unit 22c is supplied to the slurry via the slurry return pipe 24. It is sent to the storage unit 16. The slurry 4 in the slurry reservoir 16 is agitated by returning the slurry 4 to the slurry reservoir 16 by the slurry return pipe 24 so that the slurry concentration becomes uniform.

  As shown in FIG. 1, the cleaning unit 15 </ b> B is configured by disposing a cleaning nozzle 15 a that ejects a cleaning liquid (cleaning water) into a base that allows the work 1 to pass through.

  The cleaning unit 15B circulates the cleaning liquid through the cleaning liquid storage unit 25 and the pump device 26.

  Accordingly, a cleaning process is performed by the cleaning unit 15B to drop the slurry 4 sprayed onto the work 1 by the wet blast processing unit 15A.

  As shown in FIG. 1, the cleaning liquid removing unit 15C is configured by disposing a drying device 27 for discharging hot air at a downstream position of the above-described cleaning unit 8B.

  Accordingly, a cleaning liquid removing process for drying the cleaning liquid sprayed onto the work 1 by the cleaning liquid removing unit 15C is performed.

  The surface treatment apparatus having the above configuration is used for surface treatment for roughening and cleaning the surface of the metal member (work 1) before the synthetic resin member in the vibration isolator of the automobile is bonded.

  Specifically, when the workpiece 1 (hole 1a) to be processed is locked to the workpiece holder 8 (locking portion 8c) and suspended, the workpiece 1 is transferred by the workpiece transfer portion 5.

The workpiece 1 is conveyed by the workpiece conveying unit 5, when moved to the opposite position of the slurry ejection portion 6 of the wet blast treatment unit 15A, rotates shaft with the rotation of the workpiece holder 8 with to stop at that position. This of stop with stop work 1, work the swinging motion restraint member 7 is disposed so as to be opposite to the slurry injection unit 6 descends.

  A slurry 4, which is a mixture of the liquid 2 and the abrasive grains 3, is sprayed onto the rotating workpiece 1, and the surface of the workpiece 1 is blasted. At this time, the abrasive grains 3 constituting the slurry 4 are carried by the liquid 2 and collide with the surface of the work 1, and the surface of the work 1 is roughened and cleaned by the collision of the abrasive grains 3. The inventors of the present invention have confirmed that the surface of the workpiece 1 that has been subjected to the blast treatment for injecting the slurry 4 that is a mixture of the liquid 2 and the abrasive grains 3 has been well roughened and cleaned. .

  Further, the workpiece swing suppressing body 7 is positioned at the opposite position on the back side of the workpiece 1, and when the workpiece 1 is swung by the injection pressure of the slurry 4, the portion of the workpiece 1 where the slurry 4 is jetted. The workpiece abutting portion 7a comes into contact with a portion different from the above, and the swing of the workpiece 1 is suppressed.

  Subsequently, the part of the workpiece 1 where the slurry 4 is sprayed is roughly cleaned by the rough cleaning unit 21, and then the part moves downstream and is finally cleaned with the cleaning liquid in the cleaning unit 15 B, and then the part Moves downstream and the cleaning liquid is removed by the cleaning liquid removing section 15C. In any case where processing is performed by the rough cleaning unit 21, the cleaning unit 15B, and the cleaning liquid removing unit 15C, the workpiece 1 is processed while rotating the shaft while being stopped by the processing unit.

  Since the present embodiment is configured as described above, the surface of the workpiece 1 can be satisfactorily treated without damaging the workpiece 1, and the surface treatment can be performed easily and quickly.

  Further, in this embodiment, since the workpiece contact portion 7a of the workpiece swing suppressing body 7 is a plane having a larger area than at least the workpiece 1, the swing of the workpiece 1 can be reliably suppressed. Further, since the scattering around the slurry 4 is also prevented, the wear of the apparatus itself (in the cabinet) can be prevented.

  Further, in this embodiment, the workpiece contact portion 7a of the workpiece swing suppressing body 7 is formed of a member having moderate flexibility, and in this respect as well, damage to the workpiece 1 is prevented as much as possible. be able to.

  Further, in this embodiment, the workpiece transport unit 5 is provided with a workpiece holder 8 that holds the workpiece 1 in a suspended state, and the workpiece holder 8 is configured to be rotatable in the horizontal direction. There is no need to provide a large number of the injection units 5 around the work 1, and the entire surface of the work 1 can be efficiently processed.

  Further, in this embodiment, the slurry injection unit 6 is configured to inject the slurry 4 in the rotation direction of the work 1 at a position shifted from the rotation center of the work 1. A small and stable state can be obtained, and a good surface treatment can be performed also in this respect.

  Further, in this embodiment, the slurry injection unit 6 is configured to be swingable in the direction in which the workpiece 1 is suspended. In this respect as well, the entire surface of the workpiece 1 can be processed efficiently.

  Note that the present invention is not limited to this embodiment, and the specific configuration of each component can be designed as appropriate.

DESCRIPTION OF SYMBOLS 1 Work 2 Liquid 3 Abrasive grain 4 Slurry 5 Work conveyance part 6 Slurry injection part 7 Work swing suppression body 7a Work contact part 8 Work holding body

Claims (8)

A workpiece surface treatment apparatus that blasts the surface of the workpiece by injecting slurry that is a mixture of liquid and abrasive grains onto the workpiece, and has a workpiece conveyance unit that conveys the workpiece in a suspended state, A slurry injecting unit that blasts the surface of the work by injecting the slurry onto the work conveyed by the work conveying unit; and the work that is injected from the slurry injecting unit to the work by the slurry. A workpiece swing suppression body that suppresses swinging of the workpiece , and the workpiece swing suppression body is configured to prevent the workpiece from swinging by abutting against the workpiece. The workpiece surface treatment apparatus, wherein the workpiece contact portion of the body is composed of a member having moderate flexibility . In the work surface treatment apparatus according to claim 1, before Kiwa chromatography click abutment, the work surface treatment apparatus which is a planar body which covers the workpiece. The workpiece surface treatment apparatus according to claim 1, wherein the workpiece contact portion is urethane .   The workpiece surface treatment apparatus according to any one of claims 1 to 3, wherein the workpiece transport unit is provided with a workpiece holder that holds the workpiece in a suspended state, and the workpiece holder is horizontally rotatable. A workpiece surface treatment apparatus characterized by being configured.   5. The workpiece surface treatment apparatus according to claim 4, wherein the slurry injection unit is configured to inject the slurry in a direction shifted in a horizontal direction from a horizontal rotation center of the workpiece and in a direction in which the workpiece is horizontally rotated. A workpiece surface treatment apparatus characterized by comprising:   The workpiece surface treatment apparatus according to claim 1, wherein the slurry injection unit is configured to inject the slurry in a vertical direction. In the work surface treatment apparatus according to any one of claims 1 to 6, wherein the workpiece is a workpiece surface treatment apparatus which is a metal member formed by aluminum casting. The workpiece surface treatment apparatus according to claim 1, wherein the workpiece is a metal member to which a synthetic resin member is bonded at a predetermined position.

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