KR101543620B1 - Apparatus for transfering hanger - Google Patents

Abstract

The present invention relates to an apparatus to transfer a hanger. According to an embodiment of the present invention, the present invention is the apparatus moving a hanger where an object to be plated is mounted on a vertical continuous plating device inside a plating bath. The apparatus to transfer the hanger comprises: a transition portion coupled to one end of the hanger having a hanging member; and a screw member installed along a movement path of the hanger and rotating. The hanging member is coupled with a screw groove of the screw member to move in order to provide the apparatus to transfer a hanger comprising a transfer unit moving the hanger.

Description

Apparatus for transferring hanger

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hanger conveying device, and more particularly to a hanger conveying device for moving a hanger mounted with a casting object in a plating bath in a vertical continuous plating device.

In general, a vertical continuous plating apparatus is used for electroplating a flat-shaped object to be plated, such as a printed circuit board.

The vertical continuous plating apparatus is formed by dipping the object to be plated in the plating vessel formed long along the conveying direction and continuously feeding the object while maintaining the immersion state of the object to be plated, and then supplying electricity to perform plating. At this time, the workpiece is transferred while being suspended vertically.

One of the important points in plating using such a vertical continuous plating apparatus is to maintain a constant interval of the continuously supplied objects to be plated. This is to keep the plating thickness of the plating object constant.

One of the means for moving the hanger is a chain member and a rack gear. The chain member to which the rack gear is coupled is in a state of circulating the driving chain gear and the driven gear There is a way for the rack gear to move the hanger by pushing the ratchet coupled to the hanger.

However, when a chain drive system is applied to a long section, a phenomenon may occur in the chain gear due to the tensile force applied to the chain member. If the chain member is extended due to long use, the driving force can not be transmitted properly. There is a problem that a variation in the quality of the plating may occur.

Korean Patent No. 10-2011-0085281 (July 27, 2011)

The present invention proposes a hanger transporting device capable of precisely adjusting the distance between hanger hanger, delivering a constant driving force to a hanger to keep the spacing of hanger constant and improve plating quality even after a long process .

Other objects and advantages of the present invention will become apparent to those skilled in the art from the following detailed description.

According to an aspect of the present invention, there is provided an apparatus for moving a hanger to which a workpiece is mounted in a plating apparatus in a vertical continuous plating apparatus, the apparatus including a transition unit coupled to one end of the hanger and having a latching member, And a conveying unit that includes a screw member installed along a moving path of the hanger and rotationally driven, and moves the hanger by moving the engaging member in engagement with the screw thread of the screw member.

The transition unit may include a base member coupled to the hanger, a connection member having one end hinged to the base member, and a latch member coupled to the other end of the connection member and having a plurality of protruding pieces formed thereon.

Further, an elastic member may be interposed between the base member and the connection member.

Here, the transfer unit may include a support block fixed to the plating unit, a plurality of screw members supported by the support block, and an actuator for rotating the screw member.

Also, the outer surface of the support block may be positioned lower than the thread of the screw member, and the thickness of the support block may be smaller than the length of the entire section of the support member.

According to the embodiment of the present invention, it is possible to precisely adjust the interval between hanger to a set specification, and to transmit a constant driving force to the hanger even when a long time process is carried out, There is an effect that can be.

The effects of the present invention will be clearly understood and understood by those skilled in the art, either through the specific details described below, or during the course of practicing the present invention.

1 is a perspective view of a hanger transfer device according to an embodiment of the present invention;
FIG. 2 is an enlarged perspective view of a transition portion employed in the embodiment shown in FIG. 1. FIG.
Fig. 3 is a perspective view showing an example in which an elastic member is applied to the transition portion employed in the embodiment shown in Fig. 1; Fig.
FIG. 4 is an exploded perspective view of the components of the transition portion shown in FIG. 3; FIG.
FIG. 5 is an enlarged perspective view of a moving part employed in the embodiment shown in FIG. 1; FIG.
6 is a view showing the support block shown in Fig.
Figs. 7 to 9 are views showing an example of the operation of the hanger transportation device shown in Fig. 1. Fig.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, It will be possible. The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a hanger transportation device according to an embodiment of the present invention will be described in detail with reference to the drawings. In the present specification, the same reference numerals are assigned to the same components in different embodiments, and the description thereof is replaced with the first explanation.

1 is a perspective view of a hanger transportation device according to an embodiment of the present invention.

The hanger conveying apparatus 100 according to the embodiment of the present invention includes a transition unit 1 and a conveyance unit 2 for moving a hanger to which objects to be plated are mounted in a vertical continuous plating apparatus in a plating tank .

In the vertical continuous plating apparatus, the hanger is mounted with the object to be plated and moved along the plating bath. Here, examples of objects to be plated include a plate-shaped object to be plated, such as a printed circuit board. Such objects to be plated are mounted by a jig provided on the hanger. As described above, a plurality of hanger having the objects to be plated moves in the plating vessel containing the plating liquid, thereby plating the object to be plated.

When performing plating, a certain level of plating quality is required depending on the characteristics of the object to be plated. In the case of a printed circuit board to be plated in a vertical continuous plating apparatus, the electrical characteristics may vary depending on the plating quality, so that a certain level of plating quality is required.

In order to achieve this, it is necessary to keep the amount of the plating liquid located between the object to be plated and the object to be plated so as to obtain the desired plating quality and keep it constant.

In order to solve such a problem, the hanger transfer apparatus 100 according to the embodiment of the present invention includes a transition unit 1 coupled to one end of a hanger and having a latching member 13, And a transfer unit 2 having a screw member 22 for moving the hanger by moving the engaging member 13 in engagement with the threaded boss 223 of the screw member 22.

The hanger conveying apparatus 100 using the screw member 22 can move the hanger at a constant speed at all times because the hanger does not run out or the screw member does not stretch and the rotational speed is the same at both ends of the plating apparatus, The spacing of the hangers and the spacing of the objects to be plated can always be kept constant.

In addition, when the screw member 22 is used, the engaging member 13 is engaged with the threaded boss 223 and moves a distance corresponding to one rotation of the screw member 22, so that the amount of rotation of the screw member 22 is one rotation The travel distance of less than one pitch can be adjusted so that the substantially continuous travel distance can be adjusted.

As a result, it is possible to control the interval of the hanger at a fine interval of about 0.5 mm, so that the process can be performed at an interval at which optimum plating quality can be obtained.

On the other hand, due to the characteristics of the member, the screw member (22) is free from deformation even when it is used for a long time, and can continuously operate the equipment and maintain the degree of conveyance. Also, the structure is simple as compared with the chain member, and even when a small actuator is used, a large force can be obtained, which is advantageous in terms of economy and space.

Conventionally, the hanger is moved using a chain member. In other words, when the driving gear connected to the driving machine and the driven gear not connected to the driving machine are disposed at both ends of the plating apparatus and the chain member coupled with the rack gear is coupled across the driving chain gear and the driven chain gear, As the member circulates in an endless track, the rack gear pushes the ratchet coupled to the hanger to move the hanger. This is similar to a chain of bicycles.

In the case of the conventional chain drive system, since the drive unit and the driven unit are constructed in a long section, the chain gear and the chain member can not be properly engaged due to the tensile force applied to the chain member, and the chain member may be splashed.

This causes the hanging of the hanger instantaneously. Since this phenomenon may occur irregularly, the distance between the hanger and the hanger which is newly entering the plating apparatus is not constant.

On the other hand, in the case of the chain member, due to the nature of the member, the phenomenon that is caused by the continuous operation of the equipment occurs. If the chain member is stretched, the driving force can not be properly transmitted to the chain member and a slip phenomenon may occur, which also causes a gap between the hanger to be kept unchanged.

If the distance between the hanger is not constant, the interval between the objects to be mounted on the hanger is not constant, which causes a variation in the quality of the plating.

Further, in the case of a vertical continuous plating apparatus using a chain member, a rack gear is used to transfer the hanger. However, it is difficult to precisely control the spacing due to the nature of the rack gear.

However, according to the hanger transfer device 100 according to the embodiment of the present invention, it is possible to precisely control the distance between hanger hanger, and even when a long time process is performed, a constant driving force is transmitted to the hanger, There is an effect that quality can be improved.

Hereinafter, each component will be described in detail with reference to the drawings.

2 is an enlarged perspective view showing a transition portion employed in the embodiment shown in Fig.

The transition portion 1 is coupled to one end of the hanger and has a latching member 13. Since the plating is performed while the hanger is moving, a transition portion 1 having an engaging member 13 for connecting to a driving element is required at one end of the hanger.

The transition portion 1 includes a base member 11 coupled to a hanger and a coupling member 12 coupled to the base member 11 and a coupling member 13 coupled to the coupling member 12.

Referring to the drawings, the base member 11 is coupled to a hanger via a support plate 111. [ The base member 11 has a bent shape, and one side of the base member 11 is coupled to the support plate 111, and a groove is formed in the bent portion toward the screw member 22.

One end of the connecting member 12 is hinged to the base member 11 and the other end thereof is engaged with the latching member 13. [ The engaging member 13 coupled to the connecting member 12 is fixed to the connecting member 12 and rotates together when the connecting member 12 rotates.

When the engaging member 13 is engaged with the screw member 22, the connecting member 12 is positioned obliquely to the screw member 22. The engaging member 13 is pivoted by its own weight to the engaged position with the screw member 22 and the projecting piece 132 of the engaging member 13 is engaged with the threaded portion 223 of the screw member 22.

The latching member 13 may have a plurality of latching members 13, and at least one latching member 13 can be coupled with the screw member 22 to ensure the stability of the latching operation. This is because even if a plurality of screw members 22 are connected and at least one thread member 224 is not formed at the connecting portion of the screw members 22, So that there is no problem in transferring the hanger.

Further, an elastic member 14 may be interposed between the base member 11 and the connecting member 12. 3, a spring is interposed between the bottom surface 112 of the groove of the base member 11 and the connecting member 12 so as to apply a pressing force so that the engaging member 13 is caught by the screw member 22.

The spring has an initial state in which one side presses the connecting member 12 and the other side is held in contact with the bottom surface 112 of the groove of the base member 11. [ In this state, the engaging member 13 can be pressed and restored. Here, the spring may use another elastic member 14 capable of exerting a pressing force in addition to the spring as an example of the elastic member 14.

When the elastic member 14 is used to apply a pressing force to the connecting member 12, the protruding piece 132 of the engaging member 13 is inserted into the threaded hole 223 of the screw member 22, It is possible to obtain a large clamping force and to prevent the latching member 13 from being detached from the screw member 22 even if an impact is applied to the hanger.

4, the latching member 13 includes a cylindrical body 131 coupled to the connecting member 12 and a plurality of protruding pieces 132 formed along the outer circumferential surface of the body 131 do. The end of the protruded piece 132 may be rounded in a shape corresponding to the threaded portion 223 of the screw member 22.

Referring to the drawings, the engaging member 13 has the same shape as a spur gear. The engaging member 13 having such a shape allows the engaging member to pass directly through the screw member when the hanger enters the transfer device, so that the interval between the hanger can be kept constant without changing. Further, the area in which the projecting piece 132 contacts the screw member 22 is enlarged, making it possible for the hanger to move stably and accurately.

If a hook-shaped latching member is used, the latching member can not be directly engaged with the screw member, and some time is required until the latching member is engaged. This time can be irregular depending on the hanger entering and can cause the interval between hanger to be kept unchanged. This problem can be solved by adopting a latching member of a spur gear shape.

A releasable ring member 133 and a bushing 134 are coupled to the inner periphery of the engaging member 13 and fit in the slit at one end of the connecting member 12. [ In this state, the engaging member 13 is engaged with the connecting member 12 by fastening the fastening member 135 through the both side projecting surfaces 121 forming the slit. A washer 136 and a nut 137 are coupled to an end of the fastening member 135 to prevent the fastening member 135 from being loosened.

The connecting member 12 is formed with a hole 123 through which the shaft member 113 can pass for pivotal movement. The connecting member 12 coupled to the base member 11 by the shaft member 113 is supported by the base member 11 such that one end of the connecting member 12 abuts against the bottom surface 112 of the groove of the base member 11 to support the connecting member 12 at an angle do.

The coupling member 12 is formed with a recess 122 in which a spring, which is an elastic member 14, can be inserted. On the other hand, the bottom surface 112 of the groove of the base member 11 is also provided with a groove or protrusion that can receive a spring.

When the spring is received in the recessed groove 122 of the connecting member 12, the spring is not repelled when assembling the connecting member 12, and an accurate seating is possible, so that an operator who assembles or maintains the apparatus can conveniently work .

FIG. 5 is an enlarged perspective view of a transfer part employed in the embodiment shown in FIG. 1. FIG.

The transfer unit 2 includes the screw member 22 as described above and operates together with the latch member 13 of the transition unit 1 to move the screw member 22 and the support block 21, And an actuator.

The screw member 22 is disposed in parallel to the direction in which the hanger moves and the engaging member 13 is engaged with the threaded portion 223 of the screw member 22. Thus, when the screw member 22 rotates, the engaging member 13 is in a stopped state, but is guided by the threaded boss 223 of the screw member 22, so that the transition unit 1 is linearly moved, and accordingly the hanger also moves.

Referring to the drawings, a plurality of screw members 22 are connected in series. Circular connecting protrusions 221 and semicircular engaging protrusions 222 are formed at the ends of the screw member 22, respectively. The pitch of the screw members 22 is appropriately spaced so that the projecting pieces 132 of the engaging member 13 can be inserted.

By forming the semicircular engaging protrusions 222 in this manner, it is possible to prevent the coupling between the screws from being released when the screw rotates.

On the other hand, a support block 21 is interposed between the screw members 22, and the support block 21 supports the screw members 22 to be coupled to each other. The support block 21 is formed with a hole 123 through which the engaging protrusion 222 of the screw member 22 can pass and is fixed to the frame of the plating apparatus to support the screw member 22 in a line.

The section in which the hanger moves in the vertical continuous plating apparatus is relatively long. When the transporting section 2 is constituted by using one screw member 22 as a whole in the moving section, deflection of the screw member 22 may occur, and in this case, it is difficult for the hanger to go straight.

The rigidity of the screw member 22 can be maintained and the straightness of the hanger can be improved by connecting the plural screw members 22 via the support block 21. [ In addition, it is easy to maintain when trouble such as breakage of some screws occurs.

Referring to FIG. 6, the support block 21 has a shape in which the first block 211 and the second block 212, which are symmetrical to each other, are coupled via a connection bearing 213. The lower part of the connecting bearing 213 is coupled to an arc-shaped groove formed by coupling the first block 211 and the second block 212, and the upper part of the connecting bearing 213 is exposed to the outside. The diameter of the connecting bearing 213 is substantially equal to the diameter of the connecting projection 221 so that when the connecting projection 221 is engaged with the connecting bearing 213 when the screw member 22 is engaged with the supporting block 21 Avoid steps.

The structure of the support block 21 as described above can facilitate the maintenance of the equipment in the future due to the easy fastening method, and the screw members can be connected by a simple method, thereby minimizing the mechanical wear and defects that may occur in the connection portion .

Further, the coupling protrusion 222 is enlarged to improve the coupling force, and the outer surface of the support block 21 can be positioned lower than the thread 224.

The engaging member 13 moves on the outer surface of the support block 21 after moving the screw member 22 in the section where the screw thread 224 is formed and at this time the engaging member 13 smoothly moves the support block 21 The outer surface of the support block 21 is preferably located at a position lower than the thread 224.

In this embodiment, the outer surface of the support block 21 becomes the outer circumferential surface 214 of the upper part of the connecting bearing 213, which is lower than the position of the thread 224 on the upper part of the screw member 22, It is possible to proceed without interference. Furthermore, as shown in the figure, the outer peripheral surface of the upper portion of the connecting bearing 213 can be made lower than the position of the threaded bosses 223.

The thickness D1 of the support block 21 is smaller than the entire section length D2 in which the engaging member 13 is provided because the number of the engaging members 13 is plural. Thus, even if the holding member 13 is positioned on the support block 21, the other holding member 13 is caught by the screw member 22, so there is no problem in moving the hanger.

On the other hand, the support block 21 does not need to be manufactured in conformity with the pitch of the screw member 22. In this case, the pitch may fluctuate while passing through the support block 21, but since there are a plurality of protruding pieces 132 in the retaining member 13, it is possible to cope with the variation of the pitch due to the support block 21. That is, even if the pitch varies, at least one of the plurality of protruding pieces 132 is coupled to the threaded portion 223 of the screw member 22, so that the hanger can move.

The screw member 22 is rotated by a transfer actuator. The transfer actuator is connected to the screw member 22 as a servo motor by a power transmitting member such as a belt and rotates the screw member 22. Further, the moving speed of the hanger can be adjusted by adjusting the speed of the transfer actuator.

The hanger moving device constructed as above operates as follows.

Figs. 7 to 9 are views showing an example of the operation of the hanger transporting apparatus shown in Fig. 1. Fig.

In the following drawings, the number of the engaging members 13 of the transition portion 1 is two and the distance between the engaging members 13 is larger than the thickness D1 of the support block 21. [ The engaging member 13 is referred to as a first engaging member 13A and a second engaging member 13B in the order from left to right in the figure.

7 shows a case in which the hanger 1 is engaged with the screw member 22 at first and the second engaging member 13B corresponding to the first engaging member 13 Is engaged with the screw groove of the screw member 22 to control the movement of the hanger.

Fig. 8 shows a case in which the hanger is impacted on the hanger as the hanger advances as shown in Fig. 7, and the latching member 13 engaged with the screw groove of the screw member 22 is changed.

For example, when an unexpected impact is applied to the hanger, the latching member 13 engaged with the screw groove of the screw member 22 may be changed by inertia. Even in this case, since the pitch interval of the screw members 22 is small, the position of the hanger is not largely changed.

On the other hand, when the latching member 13 is pressed using the elastic member 14 such as a spring, the latching member 13 is hardly changed.

Here, the second latching member 13B, which has controlled the movement of the hanger, is engaged with the screw thread 224 of the screw member 22, and the first latching member 13A engages with the screw member 22, .

9 shows an engaging member 13 engaged with the screw groove of the screw member 22 when the hanger member 13 passes the support block 21 of the screw member 22 as the hanger advances as shown in Fig. Is changed.

When the first engaging member 13A reaches the support block 21, the first engaging member 13A is disengaged from the threaded boss 223 and the second engaging member 13B is engaged with the screw member 22, When the second engaging member 13B reaches the support block 21 after the main engaging, the first engaging member 13A passing through the support block 21 engages with the screw member 22 again to control the movement of the hanger .

In this case, in any case, the engaging member 13 is firmly coupled to the screw member 22 without detaching, so that the spacing of the hangers can be kept constant.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

1: Transitional department
11: base member 111: support plate 112: bottom surface 113:
12: connecting member 121: protruding surface 122: recessed groove 123: hole
13:
131: body 132:
133: ring member 134: bushing 135: fastening member 136: washer 137: nut
13A: first engaging member 13B: second engaging member
14: Elastic member
2:
21: Support block
211: first block 212: second block 213: connecting bearing 214: outer peripheral surface
22: screw member
221: connecting projection 222: engaging projection 223: thread 224: thread
100: Hanger feeding device
D1: thickness of the supporting block D2: length of the entire section in which the latching member is provided

Claims (5)

An apparatus for moving a hanger on which a workpiece is mounted in a vertical plating apparatus in a plating tank,
A transition portion coupled to one end of the hanger and having an engaging member,
And a screw member which is installed along the movement path of the hanger and rotatably driven, and the engaging member is engaged with the threaded bar of the screw member to move the hanger
Lt; / RTI >
The transition unit,
A base member coupled to the hanger,
A connecting member having one end hinged to the base member and
A coupling member coupled to the other end of the coupling member and having a plurality of protruding pieces formed thereon,
And a hanger conveying device. delete The method of claim 1,
Wherein an elastic member is interposed between the base member and the connecting member. The method of claim 1,
The transfer unit
A support block fixed to the plating apparatus, a plurality of screw members supported by the support block and connected to each other, and an actuator for rotating the screw member. 5. The method of claim 4,
Wherein an outer side surface of the support block is lower than a screw thread of the screw member and a thickness of the support block is smaller than a length of the entire section in which the engagement member is provided.

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