JPH0616475U - Draining device for workpieces in barrel type surface treatment equipment - Google Patents

Abstract

(57) [Summary] [Purpose] When the barrel is pulled up from the processing liquid tank,
The barrel housing can be selectively drained and rotated depending on the material and shape of the object to be processed. [Structure] At a raised position of the barrel 20, a sprocket wheel 25 of a transmission shaft 22 that rotationally drives the barrel 20 is engaged with a pin gear 31 of a drive motor 32 mounted on a lifting platform 17 so as to be disengageably engaged. The 20 was selectively rotated.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is a barrel-type surface treatment device in which a workpiece placed in a barrel is immersed in a treatment liquid tank for plating, and the barrel pulled up from the treatment liquid tank is rotated to treat the residual treatment on the treatment object. The present invention relates to improvement of a liquid draining device for dropping liquid.

[0002]

[Prior art]

 The hanger mounted on the carrier that runs intermittently along the row of treatment liquid tanks is moved up and down, and the barrel in which the object to be treated is loaded is hung on the hanger, and the hanger is sequentially dipped in each treatment liquid tank to perform plating treatment. In the barrel-type surface treatment apparatus configured to perform the treatment, the object to be treated, which has been immersed in each treatment liquid tank and finished the predetermined stepwise treatment in the treatment liquid tank, is moved through the lifting drive of the hanger. It is pulled up from the tank and is immersed in the next processing solution tank through the intermittent running of the carrier and the descent of the hanger.At this time, the processing solution from the previous tank remaining on the workpiece is processed in the next tank. There is a problem that the treatment liquid is contaminated by mixing with the liquid. In particular, with respect to an object to be processed having a screw portion or a recess formed on the inner surface or the outer surface, a large amount of the processing liquid remains in the screw portion or the recess when the processing liquid is pulled up from the processing liquid tank. It also reduces the amount of processing liquid in the previous tank.

In order to solve such a problem, a barrel-type surface treatment apparatus is disclosed in Japanese Utility Model Publication No. 59-28044, in which a barrel pulled out from a treatment liquid tank is rotated so that the liquid to be treated can be drained. It is disclosed. In such a barrel type surface treatment device, a sprocket wheel is mounted on a transmission shaft that rotationally drives the barrel, and a driving mechanism that includes a drive chain that meshes with the sprocket wheel and a drive motor that drives the drive chain moves up and down the barrel. By mounting it on a lifting platform that allows the sprocket wheel and the driving mechanism to move up and down while maintaining the linkage, the normal rotation drive of the barrel in the processing solution tank and the processing solution are performed. It is configured such that both driving of the liquid draining rotary drive of the barrel pulled up from the tank is continuously performed by the driving mechanism.

[0004]

[Problems to be solved by the device]

 In the above-mentioned conventional configuration, since the barrel pulled up from the processing liquid tank is uniformly drained and rotated regardless of the material and shape of the processing object charged in the barrel, When the object to be processed is relatively soft, there is a problem that the rotation of the barrel causes damage to the object to be processed. Also, for example, a round bar, etc., has a smooth surface and hardly any processing liquid remains. There is a problem that unnecessary draining rotation is performed on objects.

The present invention has made an attempt to improve the conventional configuration in view of the above problems, and when the barrel is pulled out from the processing liquid tank, the drainage is rotated and the material or shape of the object to be processed is changed. Accordingly, it is an object to make it possible to selectively perform the liquid draining rotation of the barrel.

[0006]

[Means for Solving the Problems]

 The present invention is mounted on a carrier that moves intermittently along a row of processing liquid tanks so that it can be raised and lowered, and a hanger is projected forward from a lifting bracket that is lifted and lowered by the lifting and lowering operation of a lifting platform. The barrel is rotatably suspended through a support frame, and a transmission shaft for rotating and driving a driven gear fixed to the side portion of the barrel is supported on the hanger along its front-rear direction. In a barrel-type surface treatment device that rotates a barrel inside the processing liquid tank by meshing a rocket wheel that is axially attached to the end with a drive chain that is linked to the drive source, corresponding to the stop position of the carrier set in the processing liquid tank And a guide rail that is disposed on the elevating mount and extends in the front-rear direction and is supported on the lower part of the elevating mount so as to be movable up and down, and between the guide rail and the elevating mount. Mounted on a lifting cylinder for vertically moving the guide rail and always holding the guide rail at a lower position, and a slider fitted on the guide rail so as to be slidable in the front-rear direction, A drive motor having a pin gear on the front surface, a forward / backward movement cylinder disposed behind the drive motor and between the guide rail and the slider, for moving the drive motor forward / backward, and pulled up from the processing liquid tank. At the raised position of the barrel, the advance / retreat cylinder is operated to push out the drive motor, and after the advance / retreat cylinder is deactivated, the elevating cylinder is actuated to move the guide rail upward to move the pin of the drive motor. The gear is meshed with the sprocket wheel of the transmission shaft to drive the barrel to rotate, and after the drive motor completes a predetermined rotation, the lifting cylinder is reversely operated to guide the guide. And a timing control device having a control content for moving the lever downward and further reversely operating the advancing / retreating cylinder to retract the drive motor to the retracted position.

[0007]

[Action]

 When the barrel hung on the hanger is pulled up from the processing liquid tank by the lifting drive of the lifting bracket, when the liquid draining rotation is necessary, the barrel linked to the drive motor is driven to rotate according to the predetermined control by the timing controller. Cutting is done. In addition, the rotation control of the barrel can be prevented by turning off the timing control device for a material that is easily damaged or has a shape that does not require draining rotation. it can.

[0008]

【Example】

 An embodiment of the present invention will be described with reference to the accompanying drawings. In FIG. 1, reference numeral 1 denotes a machine frame of a barrel type surface treatment apparatus supported by an underframe 2. The machine frame 1 is composed of a guide column 3 and beam members 4a and 4b arranged vertically. Has been. Around the machine casing 1, a treatment liquid tank row 5 is formed by arranging a plurality of treatment liquid tanks 5a. Further, a pair of upper and lower sprocket wheels 6 and 6 (see FIG. 5) are supported by the beam members 4a and 4b on both sides of the machine frame 1 in the longitudinal direction, and a chain 7 hung on the sprocket wheels 6 and 6 is supported. , 7 travel along the processing liquid tank row 5 along with the travel guides 9, 9 provided on the beam members 4a, 4b, as well as driving the sprocket wheels 6, 6. A plurality of carriers 10 are arranged at equal intervals between the chains 7 and 7, and each carrier 10 is provided so as to run intermittently by intermittent rotation of the sprocket wheels 6 and 6.

An elevating bracket 12 is attached to the carrier 10, and the elevating bracket 12 is vertically movable by inserting a guide roller 14 into a guide frame 11 of the carrier 10.

A hanger 13 is horizontally projected from the front surface of the lifting bracket 12, and a pair of support frames 18 is vertically provided from the tip of the hanger 13 and the space between the support frames 18 is increased. A barrel 20 into which a material to be processed is loaded is rotatably suspended by a shaft 19. A driven gear 21 is fixed to a side portion of the barrel 20, and a transmission shaft 22 is supported on a lower portion of the hanger 13 along the front-rear direction of the hanger 13. The transmission shaft 22 is pivotally supported at a front end of the transmission shaft 22. The spiral gear 23 meshes with the driven gear 21 via the intermediate gear 24.

A sprocket wheel 25 is rotatably supported at the rear end of the transmission shaft 22, and a drive chain 26 linked to a drive source (not shown) is provided below the sprocket wheel 25 along the processing liquid tank row 5. Is arranged. The sprocket wheel 25 meshes with the drive chain 26 when the barrel 20 is immersed in the treatment liquid tank 5a, and the transmission shaft 22 rotates by the traveling of the drive chain 26, and is linked to the transmission shaft 22 in order. The barrel gear 20 is provided to be rotated by the spiral gear 23, the intermediate gear 24, and the driven gear 21.

From the rear surface of the elevating bracket 12, a supporting roller 15 is projected in the horizontal direction, and the supporting roller 15 is mounted on an elevating passage plate 16 arranged along the moving direction of the carrier 10. To be done. The up-and-down passage plate 16 is supported by the front edge of an up-and-down pedestal 17 whose vertical movement is controlled by using the guide columns 3 of the machine frame 1 as a guide, and the up-and-down pedestal 17 raises and lowers the up-and-down passage plate 16. Then, following this, the lifting bracket 12 moves up and down in each carrier 10. When the up-and-down passage plate 16 is at the upper position, the barrel 20 suspended by the hanger 13 is pulled up from the processing liquid tank 5a. Therefore, when in the upper position, the sprocket wheels 6 and 6 are rotated by driving a motor, and each carrier 10 is moved to the stop position set in the next processing liquid tank 5a. When this movement is completed, the lift passage plate 16 moves down together with the lift stand 17, so that the hanger 13 moves down accordingly, and the barrel 20 is immersed in each processing liquid tank 5a. At this time, as described above, the sprocket wheel 25 of the transmission shaft 22 is engaged with the drive chain 26 from above, and the barrel 20 is rotated in each processing liquid tank 5a. As described above, the workpieces loaded in the barrels 20 are sequentially dipped into the processing liquid tanks 5a by the intermittent running of the carrier 10 and the lifting operation of the lifting passage plate 16.

On the other hand, on the lower side of the elevating stand 17, a guide rail 27 is arranged extending in the front-rear direction so as to correspond to the stop position of the carrier 10 set in the treatment liquid tank 5a. The guide rail 27 is supported at its front and rear end portions by a lifting rod 28 and a lifting cylinder 29 that are suspended from the lifting platform 17, and is vertically moved by the lifting cylinder 29 with a support shaft 28a of the lifting rod 28 as a fulcrum. It is provided so as to be rotatable and is always provided so that the front end is inclined downward.

A slider 30 is slidably fitted in the guide rail 27 in the front-rear direction, and a drive motor 32 having a pin gear 31 on the front surface is mounted on the slider 30. An advancing / retreating cylinder 33 is disposed between the guide rail 27 and the slider 30 behind the drive motor 32, and the advancing / retreating cylinder 33 slides the slider 30 to advance / retreat the drive motor 32. It is provided in.

Both the cylinders 29 and 33 are connected to a timing control device (not shown) and are provided so as to operate in a predetermined order. The timing control device operates the advance / retreat cylinder 33 to push out the drive motor 32 at the elevated position of the barrel 20 pulled up from the processing liquid tank 5a, and after the advance / retreat cylinder 33 stops operating, the ascending / descending shaft is moved. The binder 29 is operated to rotate the guide rail 27 upward, and the pin gear 31 of the drive motor 32 is meshed with the sprocket wheel 25 of the transmission shaft 22 to rotationally drive the barrel 20. After the predetermined rotation of 32, the lifting cylinder 29 is reversely actuated to tilt the guide rail 27 downward, and the advance / retreat cylinder 33 is reversely actuated so that the drive motor 32 is retracted to the retracted position. Is provided.

With such a configuration, as shown in FIG. 1, while the barrel 20 is immersed in the treatment liquid tank 5 a, the sprocket wheel 25 of the transmission shaft 22 is meshed with the drive chain 26 from above, and the barrel 20 Is rotated in each processing liquid tank 5a, so that the object to be processed charged in the barrel 20 is agitated for uniform processing.

After a lapse of a predetermined time, as shown in FIG. 2, when the lift 17 is raised and the barrel 20 is pulled up from the processing liquid tank 5a, the drive chain 26 and the sprocket wheel 25 of the transmission shaft 22 are moved. Is disengaged and the barrel 20 stops rotating.

In this state, when the liquid draining rotation is required, the drive motor 32 mounted on the slider 30 is pushed out by the operation of the advancing / retreating cylinder 33, as shown in FIG. 3, according to the predetermined control of the timing control device. After that, as shown in FIG. 4, the guide rail 27 of the slider 30 is rotated upward by the operation of the lifting cylinder 29, and the pin gear 31 of the drive motor 32 is rotated by the sprocket wheel of the transmission shaft 22. By engaging with the ruler 25 from below, the barrel 20 is rotated by the driving force of the drive motor 32, and the liquid to be processed is drained. Further, when the predetermined rotation of the drive motor 32 is stopped by the predetermined control of the timing control device, the elevating cylinder 29 and the advancing / retreating cylinder 33 are operated in the opposite manner to the drive motor 32 in the retracted position shown in FIG. And the predetermined liquid draining operation is completed.

Further, in the state where the barrel 20 is pulled up from the treatment liquid tank 5a as described above, the barrel 20 is charged with a material that is easily damaged or a material to be treated that does not require rotation for draining. In this case, the rotation control of the barrel 20 is not performed by not operating the timing control device. In this case, the treatment liquid is dropped naturally.

In the above embodiment, the guide rail 27 is supported by the lifting rod 28 and the lifting cylinder 29, and the lifting cylinder 29 uses the support shaft 28a of the lifting rod 28 as a fulcrum to guide the guide rail 27. The drive motor 32 is moved up and down by rotating 27 up and down. However, the invention is not limited to this, and the guide rail 27 that is supported so as to move up and down in a horizontal state can be moved up and down. The drive motor 32 can be moved up and down by providing the cylinder so as to drive up and down.

[0021]

[Effect of device]

 As described above, the present invention makes it possible to disengage the pin gear of the drive motor from the sprocket wheel of the transmission shaft that rotationally drives the barrel at the raised position where the barrel is lifted from the processing liquid tank and stopped rotating. By engaging the gears and selectively rotating the drain of the barrel according to the material and shape of the object to be processed, damage to the object that is easily scratched can be prevented, and there is no residual processing solution. It has excellent effects such as avoiding unnecessary rotation of the liquid to the object to be processed.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional side view showing an embodiment of a barrel type surface treatment apparatus equipped with a liquid draining device according to the present invention.

FIG. 2 is a side view showing an operating state of the above liquid draining device.

FIG. 3 is a side view showing an operating state of the above liquid draining device.

FIG. 4 is a side view showing an operating state of the above liquid draining device.

FIG. 5 is a schematic plan view of a barrel type surface treatment device.

[Explanation of symbols]

 5 processing liquid tank row 5a processing liquid tank 10 carrier 12 lifting bracket 13 hanger 17 lifting mount 18 support frame 20 barrel 21 driven gear 22 transmission shaft 25 sprocket wheel 26 drive chain 27 guide rail 29 lifting cylinder 30 slider 31 pin gear 32 drive Motor 33 Forward / backward cylinder

Claims (1)

[Scope of utility model registration request] 1. A hanger is mounted on a carrier that moves intermittently along a row of processing liquid tanks so as to be able to move up and down, and a hanger is projected forward from an elevating bracket that is moved up and down by an elevating operation of an elevating stand. The barrel is rotatably suspended at the tip end via a support frame, and a transmission shaft for rotationally driving a driven gear fixed to the side portion of the barrel is supported on the hanger in the front-rear direction, and the transmission shaft of the transmission shaft is In the barrel type surface treatment device that rotates the barrel in the processing liquid tank by meshing the sprocket wheel attached to the rear end with the drive chain linked to the drive source, it corresponds to the stop position of the carrier set in the processing liquid tank. And a guide rail that is disposed on the elevating platform and extends in the front-rear direction and is supported on the lower side of the elevating platform so as to be movable up and down. And a vertical movement cylinder that vertically moves the guide rail and normally holds the guide rail in a lower position, and a slider that is slidably fitted in the guide rail in the front-rear direction. A drive motor provided with a pin gear, a forward / backward movement cylinder that is disposed behind the drive motor and between the guide rail and the slider, and moves the drive motor forward / backward; and a barrel lifted from the processing liquid tank. At the position, the advancing / retreating cylinder is operated to push out the drive motor, and after the advancing / retreating cylinder is deactivated, the elevating cylinder is actuated to move the guide rail upward, and the pin gear of the drive motor is moved to the transmission shaft. Rotatably drives the barrel by meshing with the sprocket wheel, and after the drive motor has completed a predetermined rotation, the lifting cylinder is reversely operated to move the guide rail. And a timing control device having a control content for reversely operating the advancing / retreating cylinder to retract the drive motor to the retracted position. Drainer.