JPH07116932A - Pallet posture changing device for ball hitting game (pachinko) machine manufacturing line - Google Patents

Abstract

PURPOSE:To improve a work posture at a work station by manpower in a ball hitting game (pachinko) machine manufacturing line where an automatic machine and work by an operator mixedly exist. CONSTITUTION:When cylinders of upper and lower units of a jig are actuated, a roller comes into contact with an under surface of a projecting part 46, and swings a jig body 10 with a hinge 23 as its center, and raises the projecting part 46. A ratchet mechanism 23 stops it in an angle position of the jig body 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pallet posture changing device for a bullet rescue machine manufacturing line. More specifically, the present invention relates to a pallet posture changing device for a ball-and-ball game machine production line in which a machine production line such as an automatic assembly machine and a manual production line are mixed.

[0002]

2. Description of the Related Art A bullet rescue board is manufactured through various processes. For example, in an assembly line, a ball game board is mounted on a pallet and the production line is transferred. An automatic assembly machine for loading parts into this ball game board, screw tightening of parts after loading, etc., and an inspection machine after assembly are arranged and used on the production line to save labor as much as possible. There is. However, in the case of parts that are difficult to assemble automatically, some manual work is inevitable. For this reason, these automatic machines and manual work lines are mixed in the ambulance game board production line.

On the other hand, it is said that an aging society has arrived, and aging of workers is inevitable. It is desirable that a work line for manual assembly or the like be able to work in a comfortable posture so as not to hinder work for as long as possible. It can be said that improvement of the work environment and improvement of the work posture, in particular, lead to improvement of work efficiency. However, if an ammo rescue board mounted on a pallet is transported in a posture that makes it easy for humans to work, it will be difficult for an automatic machine to operate it for processing, assembly, and inspection. The present invention solves this contradiction.

[0004]

The present invention has been invented based on the above technical background, and achieves the following objects.

An object of the present invention is to provide a pallet posture converting device for a ball game machine production line for improving a manual work attitude in a ball game machine production line in which an automatic machine and a work by a worker are mixed. It is in.

Still another object of the present invention is to provide a pallet posture changing device for a ball game machine production line for improving work efficiency in a ball game machine production line in which an automatic machine and a work by a worker are mixed. Especially.

[0007]

The present invention adopts the following means in order to achieve the above object.

That is, the present invention is, in a ball game machine manufacturing line, a pallet for mounting and transferring the ball game machine at a plurality of stations of the manufacturing line, and holding the ball game machine mounted on the pallet. A jig for positioning, and a jig posture conversion means for moving the jig on the pallet to make the posture of the jig different between a human work position and a machine work position. It is a pallet posture conversion device for a characteristic ball game machine production line.

The jig posture changing means includes a hinge for swingably supporting the jig on the pallet, a swing drive means for swinging the jig, and a predetermined swing. It may be configured with a ratchet mechanism for stopping the jig at the moving angle position.

Further, it is preferable to dispose identification means provided on the pallet or jig for identifying the type of the ball game machine.

[0011]

[0012]

In the ball game machine manufacturing line, a jig for holding and positioning the ball game machine on the pallet is mounted on the pallet. The jig posture converting means moves the jig on the pallet to make the posture of the jig different between the human work position and the machine work position.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a plan view of a machine assembly line 1 of a ball game machine manufacturing line, and FIG. 2 is a cross-sectional view of FIG. 1 taken along line II-II. The machine assembly line 1 is composed of two upper and lower stages for transferring the pallets 2, and an upper pallet transfer line 3 is arranged in the upper stage and a lower pallet transfer line 4 is arranged in the lower stage.

The upper pallet transfer line 3 is a line for mounting a ball game machine on the pallet 2 and transferring the ball game machine for automatic assembly or manual assembly. The lower pallet transfer line 4 is the upper pallet transfer line 3 which is the pallet 2 in which the ball game machine is unloaded from the pallet 2.
Is a transfer line for returning to the initial position of. For this reason, elevators for raising and lowering the pallet 2 are arranged at both ends of the machine assembly line 1.

The machine assembly line 1 comprises a plurality of work stations 1st.-nst. Work station 1st.
Is a station for the worker H to attach the front frame W of the ball game machine to the pallet 2. Various machine parts are attached to the front frame W and the assembling is sequentially performed. The work station 2st. Is a station for loading parts into the front frame W on the pallet 2, that is, for placing the supplied parts at a predetermined position on the front frame W by a worker.

A screw tightening unit 6 is arranged at the work station 3st. The screw tightening unit 6 has a well-known structure capable of simultaneously loading and tightening screws at a plurality of points at the same time, and its structural function will not be described in detail. A plurality of bisfeeder units 5 are arranged near the work station 3st. The screw feeder unit 5 is a unit having a known structure and function including a hopper for storing and supplying screws for aligning and supplying the screws to the screw tightening unit 6, and the structure and function will not be described in detail. . The screw feeder units 5 are arranged corresponding to the number of heads of the screw tightening unit 6. Screws are supplied from the screw feeder unit 5 to each screw tightening unit 6 through a screw supply pipe (not shown).

The work station 2st. Is a station for loading parts into the front frame W on the pallet 2, that is, for placing the supplied parts at a predetermined position on the front frame W by a worker. The work station 2st. Is a station for reversing the front frame W mounted on the pallet 2 by 180 degrees. Hereafter, various kinds of processing and assembly are similarly performed at the work station 6st.

A chain 8 is arranged on the main frame 7 of the upper pallet transfer line 3 and the lower pallet transfer line 4 of the machine assembly line 1. Since the plurality of metal friction plates 9 are fixed to the connecting shaft of the chain 8, the metal friction plates 9 are arranged along the chain 8 and move together with the chain 8. The chain 8 has sprockets (not shown) arranged at both ends.
Are driven to rotate by a drive motor (not shown) and are always driven to rotate.

Pallet 2 FIG. 3 (a) is a plan view of the pallet 2, and FIG. 3 (b) is a front view of FIG. 3 (a). The pallet 2 has a rectangular plate-like shape, and is hollowed out in a square shape to make it lighter. Moving rollers 1 for rolling are provided at the four corners of the lower surface of the pallet body 10.
1 is arranged. The moving roller 11 is for moving on the upper pallet transfer line 3 and the lower pallet transfer line 4. On the bottom surface of the pallet body 10, 2
Fixed cylinders 12 are arranged at intervals. The fixed cylinder 12 is for positioning and fixing the pallet 2 on the upper pallet transfer line 3 or the lower pallet transfer line 4. Positioning and fixing the pallet 2
This is performed by causing one of the fixed cylinders 12 to collide with a damper and clamping the other. The damper and the clamp means are not the subject matter of the present invention and will not be described in detail.

Four friction plates 13 made of synthetic resin are arranged and fixed on both sides of the pallet body 10. Friction plate 1
3 has a spring (not shown) inside and is urged outward by the force of the spring. The friction plate 13 is pressed and brought into contact with the metal friction plates 9 fixed to the transfer chains 8 arranged on both sides of the upper pallet transfer line 3 and the lower pallet transfer line 4. When the transfer chain 8 is driven, the friction force causes the pallet 2 to be driven and moved on the upper pallet transfer line 3 and the lower pallet transfer line 4. However, because of frictional contact, when stopped and clamped by the damper and clamp, it stops at that position.

Two dampers 14 are arranged on the side surface of the pallet body 10. In the damper 14, the pallet 2 has an upper pallet transfer line 3 or a lower pallet transfer line 4
When it collides with the end of the pallet or another pallet 2, it collides with a stopper (not shown) or the side surface of the other pallet 2 to absorb the moving energy and stop. A dog 15 arranged and fixed on the same side as the damper 14.
Is for precisely defining the stop position, and its length can be adjusted because it is threaded.

Jig 16 FIG. 4 is an external view of the jig 16, and FIG.
5B is a front view of FIG. 5A, and FIG. 5C is an enlarged view of the ratchet mechanism 23 of the jig 16. The jig 16 is used by being attached to the pallet 2, and different jigs are used depending on the type to be mounted on the pallet 2 and the contents of processing / assembly. 5 (a), (b)
The jig 16 shown in FIG. 2 is for mounting the front frame W of the ball game machine. On the pallet body 10, a jig body 17 having a frame having a substantially “circular” shape and having a thickness is mounted.

Two flanges 18 extend downward and are provided in parallel at one end of the jig main body 17, that is, in the lower part of the rear side in the moving direction (the upper side in FIG. 5A is the front side and the lower side is the rear side). A support plate 19 is inserted and arranged between the flanges 18. The support plate 19 is fixed on the pallet 2 with bolts 20. Pins 21 penetrate the flanges 18 and the support plate 19. Eventually, the flange 18, the support plate 19 and the pin 21 form a hinge 22. The same structure is arranged in front of the jig body 17, that is, in the moving direction of the pallet 2.

The point is that the jig body 17 has pins 2 on the pallet 2.
It is provided to be swingable around 1. A ratchet mechanism 23 is provided on the side of the jig body 17 opposite to the hinge 22.
7 and the pallet 2. The ratchet mechanism 23 is for fixing the jig body 17 at a specific angular position when the jig body 17 is swung about the hinge 22. The position where the jig body 17 is swung and lifted is the angular position at which the worker works on the front frame W fixed to the jig body 17.

On the side surface of the jig body 17, a tip of a rod 25 having a U-shaped cross section is swingably provided by a pin 24. The lower part of the rod 25 is inserted from the upper part of a rectangular case 26 having a hollow cross section. A window 27 is opened on the side surface of the case 26. A nail 28 is exposed from the window 27. The pawl 28 is a pawl of a ratchet mechanism incorporated in the rod 28 (the pawl mechanism is well known and will not be described here in detail), and the pawl 28 is in contact with the lower end of the window 27.

A pin support member 29 is provided on the upper surface of the jig body 10.
Are fixed with bolts. The lower end of the case 26 is inserted into the box-shaped pin support member 29, and the pin support member 29 is swingable around the pin 30. The jig body 10 is swung about the center and lifted up as follows. Lift the rod 25 upward so that the claw 28 contacts the upper end of the window 27 and the claw 28
And then raise it further and stop at the top of the case 26. Therefore, the jig body 17 on the ratchet mechanism 23 side is stopped and fixed at the elevated position. The jig main body 17 is relatively inclined with respect to the pallet 2 so that the operator can easily work.

On the jig body 10, the front frame W of the ball game machine
Positioning brackets 3 of various shapes for mounting and positioning
1, positioning pins 32 and the like are fixedly arranged with bolts.

Jig up / down unit 35 The jig up / down unit 35 is for operating the ratchet mechanism 23 by vertically moving the side surface of the jig body 10. 6, 7 and 8 show the jig up / down unit 35, and FIG. 6 is a front view of the jig up / down unit 35.
6 is a plan view of FIG. 6, and FIG. 8 is a side view of FIG. In each work station 1-6st. Of the machine assembly line 1,
The jig vertical unit 35 is arranged as needed.

Guide rods 37 having a circular cross-section are provided at both ends of a movable upper cross beam 36 which constitutes the jig vertical unit 35.
The upper end of 37 is fixed by a bolt 38. The guide rods 37, 37 are inserted into the linear bearings 38, 38 and supported so as to be vertically movable. Guide rod 37,3
The lower end of 7 is fixed to both ends of the movable lower cross beam 39.
Since the linear bearings 38, 38 are fixed to the fixed plate 40 fixed to the main body frame 7 of the machine assembly line 1, they do not move.

An upper end nut of a piston rod 42 of a cylinder 41 which is pneumatically actuated is fixed to an intermediate position of the movable upper transverse beam 36. When the cylinder 41 is operated,
The movable upper horizontal girder 36, the guide rods 37, 37, and the movable lower horizontal girder 39 are integrally guided by the linear bearings 38, 38 and moved up and down. An extension 43 (see FIG. 8) is provided at an intermediate position of the movable upper cross beam 36.
Further, the lower end of the vertical member 44 is fixed to the upper end of the tip of 3.

A roller 45 is rotatably provided on the upper end of the vertical member 44. The protrusion 4 is provided on the side surface of the jig body 10.
6 is fixed. When the cylinder 41 is operated, the roller 45 comes into contact with the lower surface of the protrusion 46 to move the jig body 10 up and down. The upper and lower positions of the jig body 10 are confirmed by the upper sensor 47 and the lower sensor 48 of the movable lower horizontal girder 39 provided on the movable upper horizontal girder 36 detecting the upper end or the lower end of the fixed dog 49.

A sensor 50 for detecting the projection 46 of the jig 16 is provided on the upper end of a sensor fixing plate 51 fixed to the extension 43. If the sensor 48 does not detect the protrusion 46, it is determined that it is not necessary to drive the jig body 17 to incline, and the cylinder 41 is not operated.

[0033]Pallet identification unit 55  9 (a), 9 (b), 10 (a), 10 (b), 11
(A), (b) shows the pallet identification unit 55. Pa
The let identification unit 55 is mounted on the jig 16 of the pallet 2.
It is for identifying the front frame W of the mounted ball game machine.
is there. By this identification, the type of work and the machining operation of the machine can be identified.
Select dynamically. FIG. 9 (a) shows a flag driving unit.
9B is a plan view, and FIG. 9B is a front view of FIG. 9A.
It FIG. 10A is a plan view of the flag reading unit.
10 (b) is a front view of FIG. 10 (a). Figure 1
1 (a) is a plan view of the flag reset unit,
FIG. 11 (b) is a front view of FIG. 11 (a).

The flag driving unit 56 is used for the pallet 2
Dogs 57, 5 for identifying the type of the front frame W mounted on the
7 is a setting unit for driving 7. Two dogs 57, 57 are slidably attached to the dog guide member 58. The dog guide member 58 is the pallet body 10
Fixed on top of. The dog 57 can be either pulled out from the dog guide member 58 or pushed in.
Take a position.

The cylinder 59 has its piston rod 60.
It is for pushing in the dog 57 by. The manual switch is used to operate the cylinder 59 according to the type of the loaded object and push in the dog 57. Similarly, the other dog 57 is also a cylinder (not shown) or manually pushed. In this example, four types of mounted objects will be identified.

The flag reading unit 61 reads the position of the dog 57 driven by the flag driving unit 56 and identifies the type of the entire frame W mounted on the pallet 2. Whether or not the dogs 57, 57 are present, that is, whether or not the dogs 57, 57 are pushed in, is detected by the sensor 6
2, 62. By this reading, the entire frame W driven by the flag driving unit 56
Identify the type of. Based on this identification signal, the type of the entire frame W is read at each work station of the machine assembly line 1 and processing is performed according to the type.

The flag set unit 65 is a unit for returning the set dog 57 to the initial position. A dog holding member 68 having a space for accommodating the dog 57 therein is fixed to the tip of a rod 67 driven by a solenoid 66. Dog holding member 6
With the collar 69 of 8, the dog 57 is reset by pulling it from the pushing position by hooking on the dog 57.

Operation The operation of the above embodiment will be outlined below. At the work station 1st., An empty pallet 2 is lifted from the lower pallet transfer line 4 onto the upper pallet transfer line 5 by an elevator. The operator presses a button (not shown) to operate the cylinder 41 of the jig up-and-down unit 35, the roller 45 comes into contact with the lower surface of the protrusion 46, and the jig body 10 is swung about the hinge 23 to project. The part 46 is raised. At this time, the vertical position of the jig body 10 is confirmed by detecting the upper and lower ends of the fixed dog 49 by the upper sensor 47 and the lower sensor 48 of the movable lower horizontal girder 39 provided on the movable upper horizontal girder 36.

When the posture of the jig 16 is changed to the working posture position, the front frame W of the ball game machine is placed on the jig 16 on the pallet 2.
Attach. At this work station 1st., The operator switches the switch according to the type of the front frame W of the ball game machine, presses the start button, operates the flag driving unit 56, and inputs the type. If the clamping mechanism that clamps the pallet 2 is unclamped, the pallet 2
Since the friction plates 13 are pressed and contacted by the metal friction plates 9 fixed to the transfer chains 8 arranged on both sides of the upper pallet transfer line 3, the pallet 2 is moved by the frictional force to the upper pallet transfer line 34. Driven and moved on.

When stopped and clamped by a damper and a clamp mechanism (not shown) at the position of the work station 2st., The pallet 2 is stopped at that position. At the work station 2st., The worker H inserts components into the front frame W on the jig 16, that is, places the supplied components at predetermined positions on the front frame W. When this loading operation is completed and the operator presses the completion button, the jig up-down unit 35 is activated again to bring the jig body 17 into the working position of the machine, that is, the jig body 17 and the pallet 2 are parallel to each other. Set to the angular position. After that, the pallet 2 is transferred to the next work station 3st., Where necessary processing is performed.

[Other Embodiments] The jig 16 swings around the hinge 23 so as to match the working posture of the worker,
That is, it was inclined. However, in order to match the work posture, not only swinging but also independent movement such as turning, standing, up and down, or a combination thereof may be performed. Therefore, not only the hinge 23 but also another known mechanism may be adopted. The drive mechanism for this is not limited to the cylinder mechanism described above,
A known drive mechanism such as a servo motor and a cam / screw mechanism may be adopted.

Further, the drive mechanism of the above-described embodiment is the pallet 2
However, these drive mechanisms may be arranged in the pallet 2.

[0043]

As described above in detail, the pallet posture changing device of the ball-ball game machine manufacturing line of the present invention allows the operator to work on the ball-ball game machine on the pallet in a natural posture and automatically. Machines can also be moved without reducing efficiency.

[Brief description of drawings]

FIG. 1 is a plan view of a machine assembly line 1 of a ball game machine manufacturing line.

FIG. 2 is a cross-sectional view of FIG. 1 taken along the line II-II.

3 (a) is a plan view of the pallet 2 and FIG.
FIG. 3B is a front view of FIG.

FIG. 4 is an external view of a jig 16.

5 (a) is a plan view of the jig 16, and FIG.
5B is a front view of FIG. 5A, and FIG. 5C is an enlarged view of the ratchet mechanism 23 of the jig 16.

FIG. 6 is a front view of a jig vertical unit 35.

FIG. 7 is a plan view of FIG.

FIG. 8 is a side view of FIG.

9A is a plan view of a flag driving unit portion of the pallet identification unit, and FIG. 9B is a plan view of FIG.
It is a front view of (a).

10 (a) is a plan view of a flag reading unit of the pallet identification unit, and FIG. 10 (b) is a plan view of FIG.
It is a front view of 0 (a).

11 (a) is a plan view of a flag reset unit of the pallet identification unit, and FIG. 11 (b) is a front view of FIG. 11 (a).

[Explanation of symbols]

 1 ... Machine assembly line 2 ... Pallet 3 ... Upper pallet transfer line 4 ... Lower pallet transfer line 10 ... Pallet body 11 ... Moving roller 16 ... Jig 23 ... Ratchet mechanism 35 ... Jig vertical unit 55 ... Pallet identification unit 56 … Flag driving unit 61… Flag reading unit 65… Flag reset unit

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] May 19, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Fig. 11

[Correction method] Change

[Correction content]

FIG. 11 is a plan view of a flag reset unit of the pallet identification unit.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] Fig. 12

[Correction method] Added

[Correction content]

FIG. 12 is a front view of FIG. 11. ─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] May 20, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0033

[Correction method] Change

[Correction content]

Pallet identification unit 55 FIG. 9 (a), (b), FIG. 10 (a), (b), FIG.
FIG. 12 shows the pallet identification unit 55. The pallet identification unit 55 is for identifying the front frame W of the ball game machine mounted on the jig 16 of the pallet 2. Based on this identification, the type of work and the machining operation of the machine are automatically selected. 9A is a plan view of the flag driving unit, and FIG. 9B is a front view of FIG. 9A. Figure 10
FIG. 10A is a plan view of the flag reading unit, and FIG.
FIG. 10B is a front view of FIG. 11 is a plan view of the flag reset unit, and FIG. 12 is a front view of FIG.

Claims (3)

[Claims] 1. In a ball game machine manufacturing line, a pallet for mounting and transferring the ball game machine at a plurality of stations of the manufacturing line, and for holding and positioning the ball game machine mounted on the pallet. And a jig posture changing means for moving the jig on the pallet so as to make the posture of the jig different between a human work position and a machine work position. Pallet posture conversion device for ball game machine manufacturing line. 2. The jig posture changing means according to claim 1, wherein the jig posture changing means includes a hinge for swingably supporting the jig on the pallet, and a swing driving means for swinging the jig. And a ratchet mechanism for stopping the jig at a predetermined swing angle position, a pallet posture changing device for a ball game machine manufacturing line. 3. The pallet for a ball game machine manufacturing line according to claim 1 or 2, comprising identification means provided on the pallet or jig for identifying the type of the ball game machine. Attitude change device.