JPH06226459A - Parts supply device - Google Patents

Abstract

PURPOSE:To provide a parts supply device excellent in its structure by attracting a projection bolt by a magnetic force to supply parts. CONSTITUTION:The parts 17 advance to the inside of a temporary store room 22 through a parts supply passage 23 by neumatic conveying, and the flange 19 of the projection bolt 17 is attracted to the magnet 27 of a stop surface 26. When an ejection pin 30 moves to the left side by an air cylinder 31, the parts 17 slide on the stop surface 26, and are sent to the holding recessed part 39 of a holding head 36 from an outlet opening 24 to be positioned. At the same time, the parts 17 are attracted to the attracting surface 40 of a magnet 41. Next, an air cylinder 48 is operated to push a supply rod 38, and the shaft parts of the parts 17 are brought in an objective place, that is, a concentric position with a through hole 52 and a receiving hole 54. Then, when an air cylinder 46 is operated, an extruding member 44 pushes out the parts 17 forcedly to complete a parts supply. After an air cylinder 48 is retraced and the holding head 36 is returned, a movable electrode 55 is lowered to complete a welding.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a component supply device, which is suitable for inserting a shaft-shaped component such as a projection bolt having a flange into a hole of a steel plate component on a fixed electrode. There is.

[0002]

2. Description of the Related Art As a conventional technique of this type,
There is a welding bolt feeding device disclosed in Japanese Patent No. 144278. A structure summarizing this is shown in FIG. 7 and FIG. 8. The conventional technique will be described with reference to FIG. 7 and FIG. 3 is fixed to the stationary member. The chuck 2 has a pair of jaws 4 and 5 attached thereto in an openable and closable state by shafts 6 and 7, and a hole 8 as shown in FIG. 7 is formed by an arc-shaped recess formed in each jaw 4, 5. . Although a spring force in the closing direction is applied to the chuck 2, the illustration is omitted here. An arm 10 is supported on the supply rod 1 by a shaft 9, and an air cylinder 11 is connected to the tip of the arm 10. The air cylinder 11 makes a stroke in a direction perpendicular to the paper surface, and the chuck 2 is expanded by the protrusion of the piston rod. In the state shown in FIG. 7, when the component drops from the supply pipe 3 to the chuck 2, the supply rod 1 advances to the position shown in FIG. 8, and then the arm 10 rotates to the position shown by the chain double-dashed line (this rotation is shown. The protrusion of the piston rod of the air cylinder 11 (which is performed by a drive mechanism not performed) causes the chuck 2 to expand and the extrusion of the component to be completed.

Next, another conventional technique will be described in Japanese Utility Model Publication 3-8.
The automatic supply device for welding components disclosed in Japanese Patent No. 5179 will be described. An outline thereof is shown in FIG. Here, members having the same functions as those in FIGS. 7 and 8 are denoted by the same reference numerals, and detailed description thereof is omitted. A supply pipe 3 is welded to the arm 10 and is configured to retract upward when a component is supplied to the chuck 2 as shown by a two-dot chain line. The leg portion of the air cylinder 11 is slidably supported by a support shaft 12 connected to the supply rod 1, and the air cylinder 11 is supported by a stopper piece 14 fixed to the supply rod 1.
Piston rod 15 of is abutted. A pressing piece 16 is fixed to the right end of the air cylinder 11. When the supply rod 1 advances and the air cylinder 11 outputs, the pressing piece 16 expands the chuck 2 while pressing the component, and the component supply is completed.

[0004]

What is common to all of FIG. 7, FIG. 8 and FIG. 9 is that since the chuck is installed on the supply rod, the operating accuracy thereof is normally maintained. Is very difficult, and since the parts are supplied from directly above the chuck and delivered directly below, a mechanism for pushing and expanding the chuck is required,
In order to avoid interference with the supply pipe, either the air cylinder for pushing down the component or the supply pipe must be retractable, which is structurally complicated and the dedicated space required for it becomes too large. There are problems such as that.

[0005]

SUMMARY OF THE INVENTION The present invention is provided to solve the above-mentioned problems, and the first aspect of the present invention is to connect a holding head to an advancing / retreating type feed rod and hold the holding head. Is provided with a holding recess having a suction surface for the component,
The temporary holding unit having an outlet opening corresponding to the holding recess is adjacent to the holding head in the return position, and the parts sent out from the temporary holding unit are moved into the holding recess for positioning. As it is done, it is held on the suction surface. A second aspect of the present invention is characterized in that, in the first aspect, the supply rod is arranged so as to advance and retreat obliquely downward from above the temporary fixing unit, and the holding head has a bent shape. By bending the head, the adjacency with the temporary fixing unit is surely established, and the holding head that has received the parts advances smoothly. According to a third aspect of the present invention, in the first aspect, the holding head is provided with an extruding member protruding from the suction surface. It will be inserted.
According to a fourth aspect of the present invention, in the first aspect, the magnet is embedded in the attraction surface, and the component is reliably held on the attraction surface by the attraction force of the magnet. According to a fifth aspect of the present invention, in the first aspect, the temporary fastening unit is provided with a temporary fastening chamber, and the temporary feeding chamber is provided with a component supply passage and an outlet opening of the component. However, the component that has entered the temporary stop chamber through the component supply passage is sent out into the holding recess through the outlet opening. According to a sixth aspect of the present invention, in the fifth aspect, the magnet is embedded in the stop surface of the temporary stop chamber, and the pushing means for feeding the component from the outlet opening is provided. The magnet is attracted and held by the magnet on the surface, and is forcedly slid from the stop surface by the pushing means and is sent out into the holding concave portion. According to a seventh aspect of the present invention, in the first aspect, the pushing member is supported by the holding head so as to be able to move forward and backward, and the operating pin is pressed against the end surface of the pushing member from a direction inclined with respect to the forward and backward direction. However, the operating pin changes the direction of the force while sliding on the end surface of the extruding member to cause the extruding member to project. According to a ninth aspect of the present invention, in a type in which a holding head is coupled to an advancing / retracting type feed rod and parts are held and fed to a target location, the holding head is arranged at a position separated from an imaginary plane including the axis of the feeding rod. The supply rod, the holding head, the temporary fixing unit, and the like are arranged well without being interfered with each other by the above-mentioned separation.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the embodiment of FIGS. 1 to 4 will be described.
And the shaft portion 18, the flange 19 and the welding projection 20.
It consists of A temporary fixing chamber 22 is formed inside the temporary fixing unit 21, and a component supply passage 23 is opened therein and an outlet opening 24 is also opened. This is the shape of the component 17 as seen in FIG. To have a T-shaped opening shape. A stop surface 26 of the component 17 is formed on the cover plate 25, and a magnet 27 is embedded therein. The explanation was mixed up, but the main body 2 of the temporary fixing unit 21
8, a temporary holding chamber 22 is arranged, a pushing pin 30 as a pushing means is arranged in a through hole 29 opened in the main body 28, and is integrated with a piston rod 32 of an air cylinder 31 connected to an end of the main body 28. When the push-out pin 30 advances, it hits the upper part of the shaft portion 18 to move the part 17 into the outlet opening 2.
I will send it out from 4. The main body 28 is a stationary member 33.
A connection pipe 34 that is firmly fixed to the temporary stop chamber 22 is welded to the main body 28, and a hose 35 is connected to the main body 28 to reach a parts feeder (not shown).

The holding head 36 is fixed to a supply rod 38 via a connecting plate 37, and the holding recess 3 is provided below the holding head 36.
9 is formed. The state where the holding recess 39 is viewed from below is as shown in FIG. 3, and is a horizontal U-shaped recess, the right side of which corresponds to the upper portion of the outlet opening 24. An attraction surface 40 is formed in the holding recess 39, and a magnet 41 is formed there.
Is buried. A large-diameter hole 42 and a small-diameter hole 43 are opened in the holding head 36, a plunger 44 which is an extruding member is inserted therein, and a return spring 45 is provided.
Supported by. The air cylinder 46 is fixed to the connecting plate 37, and the tip of the operating pin 47 extending from the air cylinder 46 is in contact with the end surface of the plunger 44. Since the supply rod 38 is inclined as shown in FIG. 1, the operating pin 47 is also inclined in the same manner, so that the holding head 36 has a bent shape as shown. The supply rod 38 extends from an air cylinder 48 which is rigidly fixed to the stationary member.

FIG. 4 is a view of the state of FIG. 1 from directly above, and by using the connecting plate 37, the temporary fixing unit 2 is provided.
The line 1 and the holding head 36 are set off by L from the axis of the supply rod 38.

The target portion to which the component 17 is supplied is the through hole 52 of the steel plate component 51 which is the counterpart component, and the fixed electrode 53.
The steel plate component 51 is placed on the fixed electrode 53, and the through hole 5 is formed in the fixed electrode 53.
The receiving hole 54 communicating with 2 is opened. A movable electrode 55 paired with the fixed electrode 53 is installed coaxially with the fixed electrode.

FIG. 5 shows a modified example of the pushing means 30 in which a pushing plate 49 is connected to the piston rod 32 and an inverted V-shaped notch 50 is provided at the tip thereof. Further, FIG. 6 shows that the extruding member 44 is made of elastic steel wire or synthetic resin.
With the output of, it projects as shown by the chain double-dashed line.

The operation of the embodiment shown in FIGS. 1 to 4 will be described. In FIG. 1, the component 17 enters the temporary stop chamber 22 through the component supply passage 23 by air conveyance, and the flange 19 stops. When the pushing means 30 moves leftward, the component 17 slides on the stop surface 26 and is discharged from the outlet opening 24 toward the holding recess 39. The flange 19 that has entered the holding recess 39 is positioned there and is held by the magnet 41 on the attraction surface 40. Next, the output of the air cylinder 48 causes the supply rod 38 to advance and the shaft portion 18 to move to the target position, that is, the through hole 52.
When it comes to a position coaxial with the through hole in the vicinity of, and then stops there, and when the operating pin 47 advances with the output of the air cylinder 46, the tip of the operating pin slides on the end surface of the pushing member 44 and the pushing member 44 becomes part. 17, the flange 19 is separated from the suction surface 40, and the shaft portion 18 is fitted into the through hole 52 and the receiving hole 54 to complete the component supply. After the holding head 36 returns, the movable electrode 55 descends and the welding ends.

An air hose for each air cylinder is not shown in the figure, and the air switching control valve and the electric control circuit for realizing the above-mentioned operation are generally known ones. However, detailed explanations of these are also omitted.

[0013]

According to the present invention, since the component exiting the temporary fixing unit is sent into the holding recess of the holding head and held by the suction surface of the holding recess, the open-close chuck structure as in the prior art. It is possible to avoid the accuracy problem due to. The part is sent to the holding head in a state of being along the suction surface of the holding recess, and then is extruded in a direction away from the suction surface, so that the part is inserted from above the chuck as in the conventional technique, It is possible to avoid reliance on unstable chuck operation as in the case of pushing down directly. Since it is not necessary to use a mechanism for retracting the air cylinder for pushing out parts or retracting the supply pipe for parts as in the prior art, it is possible to simplify the structure, and it is compact. It is convenient for supplying parts to narrow spaces. The supply rod is arranged so as to advance and retreat in a diagonally downward direction from above the temporary fixing unit, and since the holding head has a bent shape, continuity between the temporary fixing unit and the holding head can be easily obtained.
The holding head can be transferred immediately from the place where the parts are received. The pushing member is supported by the holding head so as to be able to move forward and backward, and the operating pin is pressed against the end surface of the pushing member from a direction inclined with respect to the moving direction. Easy to implement. Since the holding head is arranged at a position separated from the virtual plane including the axis of the supply rod, the temporary fixing unit, the holding head, the supply rod, and the like do not interfere with each other, and a good cohesion is achieved.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing an embodiment of the present invention.

FIG. 2 is a front view of a temporary fixing unit alone.

FIG. 3 is a plan view of the holding head as viewed from below.

FIG. 4 is a plan view showing a positional relationship between a holding head, a temporary fixing unit, a supply rod, and the like.

FIG. 5 is a plan view showing a modified example of the pushing means.

FIG. 6 is a plan view showing a modified example of the pushing member.

FIG. 7 is a schematic plan view showing a conventional technique.

FIG. 8 is a plan view showing a state in which the thing of FIG. 7 has advanced.

FIG. 9 is a simplified side view showing another conventional technique.

[Explanation of symbols]

 38 Supply Rod 36 Holding Head 17 Components 40 Adsorption Surface 39 Holding Recess 24 Exit Outlet 21 Temporary Fixing Unit 44 Extruding Member 41 Magnet 22 Temporary Holding Chamber 23 Component Supply Passage 26 Stopping Surface 27 Magnet 30 Extruding Means 47 Operating Pin

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location B65G 61/00 7456-3F

Claims (8)

[Claims] 1. A holding head is connected to an advancing / retreating type supply rod, and a holding recess having a suction surface for a component is provided in the holding head, and a temporary fixing unit having an outlet opening corresponding to the holding recess is provided at a return position. A component supply device characterized by being adjacent to a holding head. 2. The component supply device according to claim 1, wherein the supply rod is arranged so as to advance and retreat in an obliquely downward direction from above the temporary fixing unit, and the holding head has a bent shape. 3. The component supply device according to claim 1, wherein the holding head is provided with an extruding member protruding from the suction surface. 4. The component supply device according to claim 1, wherein a magnet is embedded in the attraction surface. 5. The temporary fixing unit according to claim 1, wherein the temporary fixing chamber is provided with a component supply passage and an outlet opening of the component. Parts supply device. 6. The component supply device according to claim 5, wherein a magnet is embedded in the stop surface of the temporary stop chamber, and a pushing means for feeding the component from the outlet opening is provided. 7. The pushing member according to claim 1, wherein the pushing member is supported by the holding head so as to be able to move forward and backward, and the operating pin is pressed against the end surface of the pushing member from a direction inclined with respect to the moving direction. Parts supply device. 8. In a type in which a holding head is connected to an advancing / retracting feed rod and parts are held there and fed to a target location, the holding head is arranged at a position separated from an imaginary plane including the axis of the feed rod. The component supply device characterized in that