JPH0751961A - Jig plate mounting and demounting device - Google Patents

Abstract

PURPOSE:To provide a jig plate mounting and demounting device which is constituted to perform automatic mounting and demounting of a plate to promote the increase in the efficiency of a work. CONSTITUTION:By bringing a support table 80 formed displaceably in an X- direction and a Z-direction into contact with a plate 16, conveyed over belt conveyors 54a and 54b from below, the engaging pins 90a and 90b of arms 82a and 82b are engaged with the hole part of a plate, which is separated away from the belt conveyors 54a and 54b. With this state, the plate 16 is brought into contact with a cylinder head 14 and a cam holder 12. In which case, a bolt 20 is inserted in a cam holder 12 and a cylinder head 14 through the hole part of the plate 16 by means of a bolt insertion unit 30. This constitution causes automatic mounting of the plate 16 on the cam holder 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jig plate attaching / detaching device for automatically attaching / detaching a jig plate to be attached when processing a cam shaft attachment hole or the like of a cylinder head.

[0002]

2. Description of the Related Art A process for assembling a cylinder head and a cam holder and defining a cam shaft mounting hole on the assembling surface of both is conventionally performed in the engine manufacturing process. In this case, a portion corresponding to the cam shaft mounting hole is formed in advance on the cylinder head and the cam holder. However,
If both are assembled with bolts, the assembling surfaces of the both may be deformed by the tightening pressure, and the diameter of the mounting hole may change. Therefore, first, a plate in which a hole for a bolt is defined is placed on the upper part of the cylinder head and the cam holder, and the cylinder head and the cam holder are assembled by the bolt with a normal axial force to form the camshaft mounting hole. The method of defining the camshaft mounting hole by the step of defining and then removing the bolt and the plate has been adopted. According to this method, the camshaft mounting hole can be accurately defined by reassembling the cam holder to the cylinder head with a normal axial force in a later step.

[0003]

[Problems to be Solved by the Invention] However, in the past,
A worker manually mounts the plate on the cam holder on the cylinder head. Therefore, the speed of the cylinder head conveyed on the line may be restricted by the ability of the worker, or conversely, the worker may be excessively burdened.

The present invention has been made in order to solve this kind of problem, and provides a jig plate attaching / detaching device capable of automatically attaching / detaching a plate in order to promote efficiency of work. The purpose is to provide.

[0005]

In order to achieve the above object, the present invention provides a jig plate having a positioning means for machining a hole in a first member and a second member from a plate conveying means. A jig plate attaching / detaching device for automatically attaching / detaching to / from a first member and a second member, comprising: a first displacing unit configured to be movable toward and away from a first member and a second member being conveyed; 1 second displacing means engaged with the displacing means so as to be displaceable in the vertical direction, and an engaging pin attached to the tip of the second displacing means and engaging with the positioning means of the jig plate. And an arm formed in the part.

[0006]

In the jig plate attaching / detaching device according to the present invention, the first displacement means is driven with respect to the jig plate being conveyed by the plate conveying means to move the arm to the lower part of the jig plate, The second displacement means is driven to raise the arm, and the engagement pin is engaged with the positioning means of the jig plate. In this state, the first displacement means is driven so that the jig plate reaches the upper portions of the first member and the second member.
Then, the second displacement means is driven to lower the arm, and the jig plate is placed on the upper part of the first member or the second member. Therefore, the jig plate can be automatically placed. To remove it, reverse this procedure.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A jig plate attaching / detaching device according to the present invention will be described in detail below with reference to the accompanying drawings with reference to the preferred embodiments.

First, a jig plate transfer system in which the jig plate attaching / detaching device according to this embodiment is used will be briefly described, and then the jig plate attaching / detaching device will be described.

In the jig plate transfer system 10, as shown in FIG.
As shown in FIG. 3, the plate 16 is positioned on the upper portion of the cam holder 12 with respect to the cylinder head 14 on which the cam holder 12 is placed and conveyed, and the bolt 20 is screwed in through the guide hole portion 18 of the plate 16. By doing so, the cam holder 12 is assembled to the cylinder head 14 with a normal axial force. In this state, the camshaft mounting hole 22 is defined, and then the plate 16 is removed. The removed plate 16 is attached to the new cam holder 12 again.

Specifically, as shown in FIG. 1, the plate 16 is mounted on the cam holder assembly unit 2 by the conveyor 24.
6 is transported. In the cam holder assembling unit 26, the plate 16 displaced from the conveyor 24 toward the bolt inserting unit 30 is positioned on the cam holder 12 by the plate attaching device 28, and the bolt 20 is inserted into the guide hole portion 18 of the plate 16. . Further, by tightening the bolt 20 with the bolt tightening unit 32, the cylinder head 14 and the cam holder 12 are assembled with a normal axial force. In this state, the camshaft mounting hole 22 is defined in the hole defining unit 34. After that, the bolts 20 are loosened by the bolt loosening unit 36, the plate 16 is removed from the upper part of the cam holder 12 by the plate removing unit 38, and the plates 16 are conveyed to the carry-in lifter 42 by the plate cleaning device-equipped conveyor 40, and the overhead is carried out via the carry-in lifter 42. It is conveyed to the carry-out lifter 46 by the conveyor 44. The plate 16 is returned from the carry-out lifter 46 to the conveyor 24, and is mounted on the cam holder 12 again. Such an operation is repeated.

The plate mounting device 28 used in the jig plate transport system 10 thus constructed will be described in detail. The plate 16 employed here is one cylinder head 1 as shown in FIG.
4 is formed in a rectangular plate body that covers all of the plurality of cam holders 12 arranged on the upper surface of the cam holder 12, and the plurality of guide hole portions 18 corresponding to the hole portions 50 of the cam holder 12 are formed in the rectangular plate body.
Is defined, and the engaging hole portions 52a, 5a are formed along one edge.
2b are provided at two places. The guide hole portion 18 is
Although not shown, the lower surface portion has the same diameter as the hole 50, and the upper surface side is defined in a substantially inverted conical shape in which the diameter increases.

As shown in FIG. 3, the plate attaching device 28 is provided between the two belt conveyors 54a and 54b forming the conveyor 24 and spaced apart from each other at the side end portion of the cam holder assembling unit 26. There is. The plate attachment device 28 is provided with bulging portions 58a and 58b at the ends of the U-shaped pedestal 56, and the plate body 60 is mounted on the plate body 60 while bridging the bulging portions 58a and 58b. A cylinder 62 that displaces the pedestal 56 in the X direction is attached. Guide rails 64a and 64b are formed on upper portions of both side surfaces of the pedestal 56, and upper portions thereof are
The slide base 66 is placed. The pedestal 56
The amount of displacement of the slide base 66 in the X direction is restricted by the stoppers 68a and 68b provided on the plate 60. A vertical stand 70 and a horizontal stand 72 are mounted on the slide base 66. Two guide rails 74a and 74b are formed on the vertical table 70 in the vertical direction, while a cylinder 76 is provided on the horizontal table 72, and a tip of a rod 78 slides on the guide rails 74a and 74b. A support base 80 that is movably engaged is mounted. The support base 80 is provided with two arms 82a and 82b along the belt conveyors 54a and 54b, and the arms 82a and 82b have bulging portions 86a, 88a and 86, respectively.
b, 88b are provided, and in particular arms 82a, 82b
Engaging pins 90a and 90b are provided on the bulging portions 88a and 88b provided at the tip of b.

A belt conveyor 92 for conveying the cylinder head 14 and the cam holder 12 in the direction orthogonal to the X direction (hereinafter referred to as the Y direction) is provided in the direction of the tip of the plate mounting device 28, as shown in FIG. The bolt insertion unit 30 is disposed at a position where the extension lines of the belt conveyors 54a and 54b and the belt conveyor 92 intersect. In the bolt insertion unit 30, a vertical guide rail 96 is formed on the main body 94, and a slider 98 is slidably engaged on the guide rail 96. The slider 98 is provided with a bolt insertion portion 102 connected to a bolt supply pipe 100.

The plate mounting device 2 configured as described above
8 operates as follows.

First, the plate mounting device 28 includes the plate 16 conveyed on the belt conveyors 54a and 54b.
The cylinder 76 is driven in synchronization with the
Move in the direction. As a result, the engagement pins 90a and 90b formed on the arms 82a and 82b are inserted into the engagement hole portions 52a and 52b of the plate 16, and the lower surface of the plate 16 is bulged portion 86a formed on the arms 82a and 82b. 8
It is supported by 8a, 86b and 88b. Furthermore, the arm 8
By displacing 2a and 82b in the Z1 direction, the plate 16 is separated from the belt conveyors 54a and 54b. When the arms 82a and 82b are displaced to the point A (see FIG. 4), the driving of the cylinder 76 is stopped and the cylinder 62 is driven to displace the slide base 66 in the X1 direction by a predetermined distance and the arms 82a and 82b are stopped at the point B. Let As a result, the plate 16 is positioned above the cam holder 12 on the cylinder head 14 which has been displaced in the Y direction on the belt conveyor 92. Here, the slider 98 of the bolt insertion unit 30 is displaced in the Z2 direction,
The bolt insertion portion 102 is positioned directly above the plate 16. Then, from the bolt insertion portion 102 to the plate 1
Bolts 20 are inserted into the respective guide hole portions 18 of No. 6. At this time, the bolt 20 is suspended from the plate 16 by the flange portion 21. Further, the cylinder 76 is driven to displace the arms 82a and 82b in the Z2 direction by a predetermined distance and stop at the point C. As a result, the plate 16 is placed on the cam holder 12, and the bolt 20 suspended on the plate 16 is inserted into the hole 50 of the cam holder 12. The engagement pins 90a and 90b are still inserted in the engagement holes 52a and 52b of the plate 16 and are positioned on the arms 82a and 82b. After the bolt 20 is inserted in the predetermined position in this manner, the cylinder 76 is driven again to separate the arms 82a and 82b from the plate 16 in the Z2 direction and reach the point D.
Therefore, the engagement pins 90a and 90b are disengaged from the engagement holes 52a and 52b of the plate 16. At this time,
Since the arms 82a and 82b enter between the cam holders 12 mounted on the cylinder head 14, they do not come into contact with the cam holder 12. Further, the cylinder 62
Is driven to displace the arms 82a and 82b in the X2 direction to return them to the initial position (see point E in FIG. 4). By repeating this series of operations, the plate 16 is moved to the cam holder 12
It can be placed on top automatically.

The series of movements of the arms 82a and 82b are reversed (point E → point D → point C → point B → point A → point E
Point), the plate 1 on the cam holder 12
6 can be used to automatically remove.

Therefore, such a plate mounting device 28 is installed in the jig plate transfer system 10 as shown in FIG.
By incorporating it inside, the plate 16 is transported completely automatically, so that the process is completely automated and
The plate 16 can be accurately positioned on the cam holder 12.

[0018]

According to the jig plate attaching / detaching device of the present invention, the following effects can be obtained.

That is, in the jig plate attaching / detaching device, the first displacing means is driven with respect to the jig plate being conveyed by the plate conveying means to move the arm to the lower part of the jig plate, and then the second plate. The displacement means is driven to raise the arm to engage the engagement pin with the positioning means of the jig plate. In this state, the first displacement means is driven to drive the first
The jig plate reaches the upper part of the member and the second member.
Then, the second displacement means is driven to lower the arm, and the jig plate is placed on the upper part of the first member or the second member. Therefore, the jig plate can be automatically conveyed and positioned. To remove it, reverse this procedure. Therefore, the work efficiency can be improved by automatically attaching and detaching the plate.

[Brief description of drawings]

FIG. 1 is a schematic view of a plate transfer system including a jig plate attaching / detaching device according to the present invention.

FIG. 2 is a perspective view showing a relationship between a cylinder head, a cam holder and a plate according to the present invention.

FIG. 3 is a side view of a jig plate attaching / detaching device according to the present invention.

FIG. 4 is a perspective view of a jig plate attaching / detaching device according to the present invention.

[Explanation of symbols]

10 ... Jig plate transport system 12 ... Cam holder 14 ... Cylinder head 16 ... Plate 20 ... Bolt 28 ... Plate mounting device 30 ... Bolt insertion unit

Claims (2)

[Claims] 1. A jig plate attachment / detachment for automatically attaching / detaching a jig plate having a positioning means for processing a hole in a first member and a second member from a plate conveying means to the first member and the second member. An apparatus, comprising: a first displacement means configured to be movable toward and away from a first member and a second member being conveyed; and a vertical displacement mechanism configured to engage with the first displacement means. A jig comprising: a second displacing means; and an arm attached to the tip of the second displacing means and having an engaging pin formed at the tip of the jig for engaging with positioning means of the jig plate. Plate attachment / detachment device. 2. The jig plate attaching / detaching device according to claim 1, wherein the first member is a cylinder head, and the second member is a cam holder.