KR20020030043A - Automatic fin inserting machine - Google Patents

Abstract

PURPOSE: An automatic fin inserting machine is provided which automatically aligns and stands by fins, and automatically inserts the standby fins into gaps of determined distanced jigs with the fins being spaced apart from each other in a certain distance. CONSTITUTION: In a process for manufacturing a radiator used for a refrigerator or a heat exchanger, the automatic fin inserting machine comprising an automatic fin aligning part in which a fin inserting rod(10) is slantly installed, the fins are dropped onto a support(8a) when fins are slid down an inclined rod by gravity, and the fins(7) are automatically aligned by weights of the fins; and an automatic fin inserting part in which a fan is rotated by a motor or ejection of air as a fin inserter is being moved parallel to jigs, a crank(13) is rotated with being interlocked with the motor or the fan(2), a connecting rod(11) interlocked with the crank converts rotational motion to reciprocating motion, a fin pusher foot is inserted into a hole of a fin aligned at top dead point by vertical movement of the fin pusher foot(5), and the fins(7) are moved to a bottom dead center so that the fins are inserted into the jigs.

Description

Pin auto inserter {AUTOMATIC FIN INSERTING MACHINE}

The technical field to which this invention belongs is the technology of automatically inserting a pin into a gap in a jig. In the manufacture of radiators used in refrigeration equipment or heat exchangers, insert heat exchange fins at intervals set in the jig, insert pipes through the holes drilled in the heat exchange fins, and connect the rigid spheres to the piano wire to pull the piano wire Pass the body through the tube to expand the diameter of the tube to secure the heat exchange fins to the tube. After that, the tube is bent and completed according to the defined shape.

In the jig 4, jig pin fixing gaps 4b into which pins can enter are made in advance at predetermined intervals. During this manufacturing process, the thin heat exchange fins 7 should be inserted in the gap 4b of the jig in order.If the fins are thin and pressurized due to the soft characteristics of the material such as aluminum or copper, the pins will be damaged or deformed. Since it was difficult to fix and automation could not be performed, the pin insertion operation to the jig is performed by the hand by a skilled worker conventionally.

Mechanism for automatically arranging the pins automatically and a mechanism for automatically inserting the pins into the gap of the jig of the predetermined interval at a predetermined interval

1 is a perspective view of a pin automatic insertion device

Figure 2 is a side view of the pin automatic insertion device

<Explanation of symbols for the main parts of the drawings>

1: support, 1a: pin alignment stand, 1b: pin catching jaw, 2: fan or motor, 3: air sprayer, 3a: air control valve, 4: jig, 4a: jig top, 4b: jig pin fixing gap, 5: Pin Mill Development, 5a: Pin Mill Bottom, 5b: Pin Mill Slope, 6: Pin Down Passing Hole, 7: Pin, 7a: Cooling Tube Insertion Hole, 8: Pin Alignment Plate, 8a: Pin Alignment Stand, 8b: Pin alignment plate connecting side plate, 9: Pin fitting bar holder, 10: Pin fitting rod, 11: Connecting rod, 12: Crankshaft, 13: Crank

The pin inserter (except the jig in the whole figure) is moved along the jig in parallel.The method of feeding may be to reduce the speed of the motor and follow the rails connected to the wire, or rotate the screw rod to transfer the pin. . On the contrary, the jig may move. The feeder is not shown as it is a general one.

The pin inserter installs the pin alignment bar fixture 9 at the end of the pin alignment support 8 connected to the support 1 with the pin alignment support connecting side plate 8b, and the pin alignment bar 10 is connected to the pin alignment bar fixture 9 ). The pin alignment bar 10 is inclined so that the pin 7 inserted due to the inclination of the pin alignment bar 10 slides according to gravity, and falls to the pin alignment standby support 8a. Closely in contact with the wall (1a), and the shape of the pin from the second pin, the top of the pin is arranged in a fan shape on the pin alignment stand (8a) in a fan shape to the vertex (Fig. 2).

The pins aligned with the pin aligning wall 1a are lowered by a vertical force from the cooling pipe insertion hole 7a by the pin mill development bottom 5a attached to the pin mill development 5 to the jig pin fixing gap 4b. The process for this is described as follows.

When the fan 2 rotates by the air injection of the air injector 3, the crankshaft 12 rotates in conjunction with this, and the crank 13 rotates in conjunction with this. The connecting rod 11 is connected to the crank, and the rotation of the crank is changed by the connecting rod 11 in a linear reciprocating motion. The pin mill development 5 is connected to the connecting rod 11 so that only the linear up and down movement is performed by the guide of the support 1. Pin mill development (5) is one reciprocating up and down when the crank 13 is rotated once. In addition, the top dead center and the bottom dead center of the crank 13 and the connecting rod 11 and the top dead center and the bottom dead center of the pin mill development 5 are exactly the same. Accordingly, when the pin mill development 5 reaches the top dead center, it coincides with the cooling tube insertion hole 7a of the uppermost fin waiting on the pin alignment support 5a.

When the pin mill development 5 reaches the top dead center by the rotation of the fan, the pin mill development 5 is fitted into the cooling tube insertion hole 7a, and the pin mill development 5 is the bottom dead center due to the continuous rotation of the fan 2. Downwards, the mill development bottom 5a presses the lower end of the cooling tube insertion hole 5a so that the pin passes through the pin through hole 6 and the lower end of the pin 7 reaches the upper end 4a of the jig. Done. At this time, when the jig pin fixing gap 4b coincides with the pin, the jig pin fixing gap 4b is pushed into the gap to reach the bottom dead center and the pin is correctly inserted into the jig.

When contacting the jig upper end surface 4a without gap, the pin cannot be lowered and the pin inserter (the whole figure) is moved and pressed until the jig pin fixing gap 4b appears, and then the jig pin fixing gap 4b. When it appears, it is pushed into the empty jig pin fixing gap (4b).

When the pin 7 stays on the jig top end 4a, the pin mill development 5 and the connecting rod 11 crank 13 crankshaft 12 fan 2 are subjected to continuous pressure, which is depressed. Affecting the pin 7 causes the pin to be deformed or damaged. Therefore, when the crank is rotated by a power such as a motor or hydraulic pressure, the force is too strong and difficult to adjust, so that the pin is deformed or damaged, making it difficult to insert, and the entire insertion apparatus is stopped. To solve this problem, if the fan 2 is installed and the fan is rotated by injecting air to the fan, when the pin is on the jig top surface 4a, the air blown to the fan is scattered and the fan 2 rotates. And the inserter or jig 4 is moved to reduce the pressure on the pin until the pin reaches the pin fixing gap 4b of the jig, preventing damage or deformation of the pin, thereby completely inserting the pin into the jig. Can be.

When the pin mill development 5 reaches the bottom dead center and fixes the pin 7 to the jig pin fixing gap 4b, it moves back to the top dead center. The pin inserter (the whole figure) always moves horizontally at a constant speed, which causes the pin mill development 5 to deviate from the hole 7a of the pin.

If the horizontal movement speed of the inserter is faster than the ascending speed of the pin mill development 5, the pin mill development 5 cannot be completely detached from the cooling tube insertion hole. At this time, the inclination of the mill development inclined surface (5b) is caught in the cooling tube insertion hole (7a) to prevent the pin is pulled out, and if the top of the cooling tube insertion hole (7) is caught on the mill development inclined surface (5b), 7) When the whole is lifted, the upper end of the pin is caught by the lower end of the pin alignment standby support (8a) so that it can no longer rise and is released from the pin mill development (5) and is seated in the jig pin fixing gap (4b).

The pin mill development (5) rising from the bottom dead center by the rotation of the fan is pinned to the pin mill development (5), the pin (7) in close contact with the pin waiting alignment wall (1a), less by the protruding mill development slope (5b) When the pin mill development 5 reaches the cooling tube insertion hole 7a, the pin is pushed by the pressure of the other stacked pins and again closes to the pin alignment waiting wall 1a.

The pin may be pushed up by the rising pin mill development inclined surface 5b, in which case the pin is caught by the pin catching jaw 1b and the rising of the pin is stopped.

The pin mill development 5 which has risen to the top dead center is fitted to the cooling tube insertion hole 7a, and the bottom of the cooling tube insertion hole 7a is pushed down by the mill development bottom 5a while moving to the bottom dead center, so that the jig 4 The cycle starts as long as the pin is inserted into the jig pin fixing gap 4b.

By automating the pinning of the jig that was made by hand by a skilled worker, the skilled worker does not need skilled workers, and even the unskilled workers have the same productivity as the skilled workers, and reduce manpower and increase productivity.

Claims (1)

Fix the jig and move the pin inserter parallel to it, or fix the pin inserter and move the jig, Connect the pin alignment support connecting side plate (8b) to the support (1) and fix it, and make a pin passing down gap (6) between the support (1) and the pin alignment plate (8a), Install the pin alignment bar fixture (9) at the top inclined end of the pin alignment support (8), securely pin the pin alignment bar (10) pinned to the pin alignment bar fixture (9), the pin is pushed to the end of the pin alignment rod When it comes to gravity, the pin-aligned standoff (8) falls down due to gravity, and the pins at the top end adhere to the support pin-aligned standoff wall (1a) by the weight of the pins (7) stacked in succession, and the flat pin-lined standoff (8a) Contact with the machine by gravity and vertically align, and connect it with a mechanical device using the pin alignment method that the pin alignment support (8) is separated from the lower end of the pin so that the pin is not caught. The amount of air is controlled by the air control valve 3a of the air injector 3 installed on the support 1, the fan 2 is rotated by the compressed air of the air injector 3, and the rotation of the fan is cranked. The crank 13 rotates in conjunction with the shaft 12, and the rotation of the crank interlocks with the connecting rod 11 to cause the pin mill development 5 to linearly reciprocate. The pin mill development 5 includes a mill development having one or more pin mill development bottoms 5a and a inclined slope 5b which are caught by the cooling tube insertion hole 7a, and the pin mill development 5 has a crank 13 of 1. Every time it rotates, it interlocks with the connecting rod 11, and reciprocates a top dead center and a bottom dead center once. In the pin mill development 5, the mill development 5c is inserted into the cooling tube insertion hole 7a at the top dead center, and when the lower end of the cooling tube insertion hole 7a is caught by the mill development bottom 5a when moving to the bottom dead center, the pin is removed. When the pin insertion device (the whole picture except the jig) is moved and pushed down, when the lower end of the pin reaches the jig pin fixing gap 4b, it is slid by the pressure of the pusher to reach the bottom dead center. The pin mill development 5c having reached the bottom dead center is disengaged from the cooling tube insertion hole 7a while the pin insertion device (the whole figure) moves, and before the pin seal 5 is disengaged from the cooling tube insertion hole 7a. The sealer moves to the top dead center, and the pin is moved from the jig to the top dead center without resistance by the movement of the pin inserter and the mill development inclined surface 5a. A pin insertion mechanism that repeats a pin insertion cycle by inserting and removing a pin into a jig and moving away from the bottom dead center and the top dead center of the mill development (5).