KR20190023183A - Equipment for fixing chain pins for chip conveyors using hot forming - Google Patents

Abstract

The present invention relates to chain pins fixing equipment for a chip conveyor using friction heat compression molding, which always constantly maintains a separation distance between outer links and a separation distance between inner links even after riveting is fixed by using friction heat in accordance with a cross sectional shape of a shaft rotating at high speed to compressively mold an end portion of a chain pin through frictional heat, not by using cold forging molding or hot forging molding to mold the end portion of the chain pin, with respect to fixing the chain pin connecting the outer link and the inner link, which are provided on both side edges of a chip conveying chain for the chip conveyor, and a bearing to each other, thereby improving quality of the chip conveying chain.

Description

TECHNICAL FIELD [0001] The present invention relates to a chain pin fixing apparatus for a chip conveyor using frictional heat compression molding,

The present invention relates to a chain pin fixing apparatus for a chip conveyor using a frictional heat compression molding, and more particularly, to a chain pin fixing apparatus for a chip conveyor using a frictional heat compression molding method. More specifically, the present invention relates to an outer link provided on both side edges of a chip conveying chain for a chip conveyor, , The end portion of the chain pin is compression molded between the frictional heat by using the frictional heat corresponding to the sectional shape of the shaft rotating at high speed instead of forming the end portion of the chain pin by using cold forging or hot forging, The present invention relates to a chain pin fixing apparatus for a chip conveyor using frictional heat compression molding capable of increasing the quality of a chip transferring chain by keeping the distance between the outer links and the distance between the inner links constant.

Generally, cutting chips generated during cutting of a metal material in a machine tool are automatically transferred by the chip conveyor.

On the other hand, a chain conveying chain applied to such a chip conveyor is formed by inserting a chain pin connecting a pair of outer links and a pair of inner links into a central groove, and then cold-forging or hot- So as not to be detached.

Generally, the gap between the link and the link should be kept constant at a distance of 12.7 mm. However, such a distance is not constant due to cold forging or hot forging, and a thin- The chip conveyor is not smoothly operated and unexpected load is generated due to warping or uneven spacing between the link and the link, so that the chip conveyor may be broken.

Particularly, cold forming can be applied to a case where a metal to be applied to a chip conveyor is a low carbon steel. In the case of a low carbon steel, although it can be formed by a cooling blowing method, there is a problem that its thickness is small and its strength is weak due to small molding amount. Therefore, when the metal to be applied to the chip conveyor is high carbon steel, the hot forging is required, but the distance between the links may not be constant during hot forging.

In order to solve the problems caused by the conventional chain pin fixing, the present inventors have found that, in fixing the chain link which connects the outer links and the inner links and the bearings provided on both side edges of the chip transfer chain for chip conveyor, The end portion of the chain pin is compression molded between the frictional heat by using the frictional heat according to the sectional shape of the shaft rotating at high speed instead of forming the end portion of the chain pin by using cold forging or hot forging, The inventors of the present invention have invented a chain pin fixing device for a chip conveyor using frictional heat compression molding capable of increasing the quality of the chip transfer chain by keeping the distance between the outer links and the distance between the inner links constant.

Korea Public Utility Model No. 20-1995-0008002

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a method of fixing a chain pin for connecting an outer link and an inner link and a chain pin provided at both side edges of a chip conveying chain for a chip conveyor, The end portion of the chain pin is compression-molded between frictional heat by using frictional heat according to the cross-sectional shape of the shaft rotating at high speed, instead of molding the end portion of the chain pin by using the frictional heat, And to provide a chain pin fixing apparatus for a chip conveyor using frictional heat compression molding capable of maintaining a constant distance between inner links so as to improve quality of a chip transfer chain.

The chain pin fixing device for a chip conveyor using frictional heat compression molding according to an embodiment of the present invention includes a transfer part for transferring a chip transferring chain placed on a transferring rail in one direction, a transfer part for transferring the transferred chip transferring chain on a fixing plate And a compression mechanism for compressing the end portion of the chain pin between the frictional heat and the frictional heat compression molding portion contacting the chain pin so as to be in contact with the chain pin And a position shifting unit for shifting the compression forming unit between the frictional heat, wherein a distance between a pair of outer links located at both side edges of the chip transfer chain and a distance between the pair of inner links are kept constant And the chain pin is riveting the pair of outer links and the pair of inner links. can do.

In one embodiment, the transfer section may transfer the chip transfer chains at regular intervals and at regular intervals so that the chain pins are located on the same straight line as the compressing die between the frictional heat.

In one embodiment, the fixing portion is vertically lowered and inserted between the pair of outer links or between the pair of inner links, and the distance between the pair of outer links or the distance between the pair of inner links A separation distance maintaining unit for keeping the distance constant and a tightly fixing unit for tightly fixing the chip transfer chain on the fixing plate.

In one embodiment, after the spacing distance between the pair of outer links or the spacing distance between the pair of inner links is maintained by the spacing distance maintaining portion, the upper portion of the chip transfer chain is tightly fixed . ≪ / RTI >

In one embodiment, the spacing distance maintaining portion may be vertically lowered and inserted between the pair of outer links or between the pair of inner links to contact the feed rail.

In one embodiment, the spacing distance holding portion and the close contact portion can be operated at a common pressure.

In one embodiment, the frictional heat compression forming portion includes a frictional heat compression molding chip which is in contact with the chain pin and which has depressions corresponding to the shape of the head of the rivet in the inward direction, And a motor for rotating the chip in one direction, and a frictional heat compression molding chip, and an extension for connecting the motor. When the frictional heat compression-molding chip is in contact with the chain pin while the frictional heat compression- The end of the chain pin is heated by the heat generated between the chain pin and the frictional heat compression molding chip, and can be thermoformed into a shape corresponding to the depression.

In one embodiment, the position shifting unit may be configured such that the positioning plate on which the motor is mounted, the guide rail located below the seating plate, and the frictional heat compression molding chip contact the chain pin or be separated from the chain pin, And a sharing pressurizing unit for reciprocatingly moving the seating plate positioned on the guide rail.

In one embodiment, the common pressure providing portion includes a common piston including a first piston rod reciprocally linearly moving in one direction, and a second piston rod that is pushed by the first piston rod when one side of the first piston rod is inserted in the inward direction And a second piston rod which is drawn out in an outward direction corresponding to an angle of 90 degrees with respect to the insertion direction of the first piston rod and pushes the seating plate toward the chain pin, and has an elastic force, And an elastic body for allowing the second piston rod to be drawn inward of the direction changing unit when the first piston rod is detached from the direction changing unit as the connecting plates are connected to each other.

In one embodiment, the frictional heat compression forming portions may be provided on both side edges of the chip transfer chain, respectively.

In one embodiment, the covariance pressure providing portion may be such that the common pressure is activated after the chip transfer chain is fixed on the stationary plate by the securing portion, so that the first piston is inserted in the direction changer inward.

According to an aspect of the present invention, there is provided a method of manufacturing a heat exchanger, which uses a frictional heat in accordance with a cross-sectional shape of a shaft rotating at high speed, instead of molding a distal end of the chain pin by using cold forging or hot forging, The distance between the outer links and the distance between the inner links are always kept constant even after the riveting is fixed, thereby improving the quality of the chip transfer chain.

FIG. 1 is a view schematically showing the construction of a chain pin fixing apparatus 100 for a chip conveyor using frictional heat compression molding according to an embodiment of the present invention.
FIG. 2 is a view schematically showing a form of a chain pin fixing apparatus 100 for a chip conveyor using the frictional heat compression molding shown in FIG.
3 shows the shape of a pair of outer links 2, a pair of inner links 3, a roller 4 and a chain pin 5 located on both side edges of the chip transfer chain 1 shown in Fig. 2 Fig.
4 is a view showing the fixing part 120 shown in Fig. 2 in more detail.
FIG. 5 is a view showing more specifically the frictional heat compressible portion 130 shown in FIG.
FIG. 6 is a view showing a process of thermally molding the end portion of the chain pin 5 by the frictional heat compressible portion 130 shown in FIG. 2 in order.

Hereinafter, preferred embodiments of the present invention will be described in order to facilitate understanding of the present invention. However, the following examples are provided only for the purpose of easier understanding of the present invention, and the present invention is not limited by the examples.

FIG. 1 is a schematic view showing the construction of a chain pin fixing apparatus 100 for a chip conveyor using frictional heat compression molding according to an embodiment of the present invention. FIG. 2 is a cross- 3 is a view schematically showing a form of a chain pin fixing apparatus 100 for a chip conveyor used. FIG. 3 shows a pair of outer links 2 located on both side edges of the chip conveying chain 1 shown in FIG. 2, 4 is a view showing the shape of the inner link 3 of the pair, the roller 4 and the chain pin 5, Fig. 4 is a view showing the fixing portion 120 shown in Fig. 2 in more detail, Is a view showing more specifically the frictional heat compressible portion 130 shown in Fig.

1 to 5, a chain pin fixing apparatus 100 for a chip conveyor using frictional heat compression molding according to an embodiment of the present invention includes a feed unit 110, a fixing unit 120, 130 and a position shifting portion 140. [

First, the transfer unit 110 can transfer the chip transfer chain 1 mounted on the transfer rail 110a in one direction (more specifically, in the direction of the fixing unit 120 described later).

At this time, the transfer unit 110 is arranged to move the chip transfer chain 1 at a predetermined interval and at a predetermined interval so that the chain pin 5 located at both side edges of the chip transfer chain 1 is positioned on the same straight line as the compressible- .

Here, the chain pin 5 is located on the same straight line as the compressible portion 130 between frictional heat means that the chain pin 5 is located between the compressible portions 130 between frictional heat provided on both sides, It may mean that the compressible portion 130 and the chain pin 5 are positioned in a straight line so as to coincide with each other.

Particularly, as the transferring section 110 transfers the chip transferring chain 1 so as to correspond to the interval of the chain pins 5 of the chip transferring chain 1, the chain pin 5 can always be positioned at a predetermined position This transfer operation of the transfer unit 110 can be adjusted corresponding to the thermoforming operation of the compressible die 130 between frictional heat described later and the position shifting operation timing of the position shifting unit 140. This will be described later.

In the present specification, the conveying rail 110a is provided with a bearing seating rail 110a-1 on which the rollers 4 of the chip conveying chain 1 are seated, and the chip conveying chain 1 includes bearing seating rails 110a- 1 to the frictional heat compression forming portion 130 to be described later in a state in which the roller 4 is seated.

Further, in one embodiment, the pair of outer links 2 and the pair of inner links 3 included in the chip transport chain 1 may be formed in a peanut shape as viewed from the side.

More specifically, although in the drawings herein the formation of a pair of outer links 2 and a pair of inner links 3 is shown as being in the form of a straight plate with a rounded distal end, in one embodiment a pair of outer links The center portion of the inner link 2 and the pair of inner links 3 may be formed in a tapered shape so as to have a shape of a loose eight-letter shape or a peanut shape having a concave central portion.

Next, the fixing unit 120 may serve to fix the chip transferring chain 1 transferred by the transferring unit 110 on the fixing plate 121. [

To this end, the fixing portion 120 is vertically lowered and inserted between the pair of outer links 2 or between the pair of inner links 3, so that the distance between the pair of outer links 2, A spacing distance maintaining portion 120a which serves to keep the distance between the pairs of inner links 3 constant, a tight fitting fixing portion 120b for tightly fixing the transferred chip transfer chain 1 on the fixing plate 121, ). ≪ / RTI >

The spacing distance holding portion 120a may be vertically lowered from the upper side to the lower side of the chip transfer chain 1 to be sandwiched between the pair of outer links 2 or sandwiched between the pair of inner links 3 At this time, since the distance between the pair of outer links 2 or the distance between the pair of inner links 3 is different from each other, the distance-maintaining portion 120a may be provided with various diameters or thicknesses corresponding thereto .

For example, the distance between the pair of outer links 2 may be wider than the distance between the pair of inner links 3. On the basis of the position of the chain pin 5, a pair of outer links 2 A pair of inner links 3 are located at the front and a pair of outer links 2 are located at the rear at the position of the next chain pin 5 when the pair of inner links 3 are located at the rear side do.

That is, when the chain pin 5 is continuously fed forward, since the pair of outer links 2 and the pair of inner links 3 are alternately located at the front and rear of the chain pin 5, The spacing distance holding portions 120a may be vertically lowered alternately so as to have different diameters or thicknesses corresponding thereto.

At this time, the separation distance between the pair of outer links 2 can be kept constant by the separation distance maintaining portion 120a, and the separation distance between the pair of inner links 3 is about 12.5 mm So that it can keep the separation distance constantly.

Therefore, even if the binding teeth of the rotating body (not shown) that rotates the chip transport chain 1 are bound between the pair of outer links 2 or rotated in a state where they are bound between the pair of inner links 3 The spacing distance between the pair of outer links 2 or the spacing distance between the pair of inner links 3 is uniform and constant, the rotating operation of the rotating body can be smoothly performed.

The spacing distance holding portion 120a descending in the vertical direction is in contact with the upper portion of the conveying rail 110a so that the spacing distance between the pair of outer links 2 or the spacing distance between the pair of inner links 3 is preferentially The upper portion of the chip transfer chain 1 is tightly fixed on the fixing plate 121 by the tightly fixed portion 120b.

The fixing plate 121 may be formed in a shape corresponding to the lower side of the chip transfer chain 1. The upper portion of the chip transfer chain 1 is fixed by the fixing portion 120b to the fixing plate 121, The shape of the chip transferring chain 1 can be maintained without being deformed.

Meanwhile, in one embodiment, the spacing distance maintaining portion 120a and the tight fitting portion 120b may correspond to a common pressure piston rod descending vertically from the upper side to the lower side, and for this purpose, the spacing distance maintaining portion 120a and the close- The fixing portion 120b may be provided to operate at a common pressure.

Next, the friction frictional element 130 between the friction frictional elements 130 is brought into contact with the fins 5 on both sides of the transferred chip transfer chain 1, shaped so as to correspond to the head shape of the rivet.

To this end, the frictional heat compression element 130 may include a frictional heat compression molding chip 130a, an electric motor 130b, and an extension base 130c.

The inter-frictional compression-molded chip 130a may be formed to have a depression 130a-1 substantially corresponding to the shape of the head of the rivet in the inward direction while being substantially in contact with the chain pin 5 .

At this time, since the distal end of the chain pin 5 can be formed in a generally cylindrical shape and the depression 130a-1 can be formed in the shape of a circular recess depressed inward, the frictional heat compression molding chip 130a The chain pin 5 is gradually heated by the heat generated while rotating at a high speed so as to be thermoformed in a shape corresponding to the depression 130a-1, so that the head portion of the rivet corresponds to the head portion of the rivet As shown in FIG.

The chain pin 5 is not separated from the outside in a state where the pair of the outer links 2 and the pair of the inner links 3 and the roller 4 are interposed therebetween while the pair of outer links 2 Or the spacing distance of the pair of inner links 3, as shown in Fig.

The electric motor 130b may be an electric motor that rotates the compression-molding die 130a at high speed. The motor 130b rotates the compression-molding die 130a at a high speed, It should be noted that the type of the electric motor 130b is not limited as long as it provides a rotational force and a rotational speed capable of generating sufficient heat required for the electric motor 130b.

The extension base 130c serves to fix the frictional heat compression molded chip 130a to the electric motor 130b. The extension base 130c is formed so as to be adjustable in length as required and can be detached from the electric motor 130b if necessary . In addition, the frictional heat compression-molded chip 130a can also be detachably attached to the extension base 130c.

In one embodiment, the present invention may be provided with anti-shake bearings (not shown) that prevent the extension cradle 130c from shaking when the extension cradle 130c rotates at a high speed.

In one embodiment, a cooler (not shown) may be provided to cool at least one of the frictional heat compression-molding chip 130a and the extension 130c that rotate and rub at a high speed.

The cooling unit prevents the frictional heat between the frictional heat compression molded chips 130a and the extension base 130c from being overheated by injecting cooled gas such as nitrogen gas or air into the frictional heat compression molding chip 130a or the extension base 130c Can play a role.

On the other hand, the frictional-heat compressible portion 130 can be provided on both side edges of the chip transfer chain 1 so as to thermally mold both of the two chain pins 5 provided at both side edges of the chip transfer chain 1 have.

Next, the position shifting portion 140 performs a position shifting (more specifically, reciprocating linear movement) of the frictional heat compression element 130 so that the frictional heat element 130 between the frictional heat elements contacts the chain pin 5 .

The frictional heat compression molding die 130a of the compressible die 130 between frictional heat generators is prepared so as to be spaced apart from the chain pin 5 so as to maintain a certain distance from the chain pin 5, And is contacted while moving toward the chain pin 5 when positioned on the same straight line as the compression-molded chip 130a.

For this purpose, the position shifting unit 140 includes a seating plate 140a on which the electric motor 130b is seated, a guide rail 140b positioned on the lower side of the seating plate 140a, (140c).

The seating plate 140a refers to a seating space in which the electric motor 130b is seated and a wheel or a bearing (not shown) is provided on the lower side for smooth movement along the guide rail 140b .

The guide rail 140b provides a movement space for the seating plate 140a to move. At this time, the guide rail 140b may be positioned at 90 degrees in a horizontal state with the frictional heat compression element 130.

That is, the electric motor 130b mounted on the seating plate 140a is linearly reciprocated along the guide rail 140b in a direction perpendicular to the chain pin 5.

At this time, the length of the guide rail 140b is not limited and may be a sufficient length in consideration of the length of the frictional heat compression-molded chip 130a, the size of the motor 130b, the length of the extension 130c, and the like.

The sharing pusher study unit 140c includes a shared power unit 140c-1, a direction changing unit 140c-2, and at least one elastic member 140c-1 for transmitting the power for linearly moving the seating plate 140a placed on the guide rail 140b. As shown in FIG.

The common accumulator 140c-1 includes a first piston rod that linearly reciprocates in one direction, and the first piston rod can be drawn in and out of the direction changer 140c-2. At this time, when the first piston rod is pulled in the direction of the inside of the direction changing device 140c-2, the second piston rod inside the direction changing device 140c-2 is pushed by the first piston rod, And is pulled out in an outer direction corresponding to an angle of 90 degrees. As a result, the seating plate 140a connected to the second piston rod is pushed toward the chain pin 5.

On the contrary, when the first piston rod that has pushed the second piston rod is drawn outwardly of the direction changing unit 140c-2, the elastic body pulls the second piston rod inward of the direction changing unit 140c-2, So that the plate 140a is pushed away from the chain pin 5.

At this time, the elastic body has an elastic force, one side may be connected to the direction changing unit 140c-2, and the other side may be connected to the seating plate 140a.

Next, the process of thermally forming the end portion of the chain pin 5 by the frictional heat compression element 130 will be described with reference to FIG.

FIG. 6 is a view showing a process of thermally molding the end portion of the chain pin 5 by the frictional heat compressible portion 130 shown in FIG. 2 in order.

The separation distance maintaining portion 120a is provided between the pair of outer links 2 of the chip transferring rail 1 transferred on the fixing plate 121 by the transferring portion 110 or between the pair of inner links 3, (See Fig. 7 (a)), the tightly fitting portion 120b is lowered from the upper side of the chip transfer chain 1 to the lower side to tightly fix the chip transfer chain 1 b)).

Then, as the first piston rod of the shared impeller 140c-1 is drawn inward of the direction changer 140c-2, the second piston is pulled outward to push the seating plate 140a, 140a are linearly reciprocated along the guide rail 140b, the frictional heat compression-molding chip 130a is moved in the direction of the chain pin 5 (see Fig. 7 (c)). Next, due to the heat generated while rotating the frictional heat compression-molding chip 130a at a high speed, the end of the chain pin 5 corresponds to the depression 130a-1 formed inside the frictional heat compression molding chip 130a (See Fig. 7 (d)).

Thereafter, as the first piston rod of the common accumulator 140c-1 is drawn outward from the inside of the direction changing device 140c-2, the second piston is drawn inward, and the seating plate 140a is guided by the guide rail 140b so as to be spaced apart from the chain pin 5 (see Fig. 7 (f)).

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined in the following claims. It can be understood that it is possible.

1: Chip feed chain 2: Outer link
3: Inner link 4: Roller
5: Chain pin
100: Chain pin fixing system for chip conveyor using compression molding between frictional heat
110: conveying section 110a: conveying rail
120: Fixing portion 120a:
120b:
121: Fixing plate
130: compressible die during frictional heat 130a: compression-molding die between frictional heat
130a-1: depression 130b: electric motor
130c:
140: Positioned east 140a: Mounting plate
140b: guide rail 140c:
140c-1: Shared prime mover 140c-2:

Claims (11)

A transferring part for transferring the chip transferring chain placed on the transferring rail in one direction;
A fixing unit for fixing the transferred chip transfer chain on the fixing plate;
A frictional heat compressing die positioned adjacent to chain pins located at both side edges of the chip transfer chain and compressing the end portions of the chain pins through frictional heat; And
And a position shifting portion for shifting the compression-molding portion between the frictional heat so that the frictional heat compression forming portion contacts the chain pin,
Wherein the chain pin comprises a pair of outer links and a pair of inner links, respectively, in a state in which a distance between a pair of outer links located at both side edges of the chip transfer chain and a distance between the pair of inner links are kept constant, Wherein the link is riveting. The chain pinning fixture for a chip conveyor using frictional heat compression molding.
The method according to claim 1,
The transfer unit
Wherein the chain transferring chain is transferred at a constant interval and at a constant interval such that the chain pin is located on the same straight line as the compressing die between the frictional heat.
The method according to claim 1,
The fixing unit includes:
Wherein the distance between the pair of outer links or the distance between the pair of inner links is lowered and inserted in a vertical direction between the pair of outer links or between the pair of inner links, A holding portion; And
And a tightly fixed portion for tightly fixing the chip transfer chain on the fixed plate. The chain pin fixing device for a chip conveyor using friction frictional heat compression molding.
The method of claim 3,
Wherein an upper portion of the chip transfer chain is tightly fixed after the spacing distance between the pair of outer links or the spacing distance between the pair of inner links is maintained by the spacing distance holding portion. Chain Pin Fixing System for Chip Conveyor Using Molding.
The method of claim 3,
The separation distance maintaining unit
Wherein the chain pin is lowered and inserted in a vertical direction between the pair of outer links or between the pair of inner links so as to be in contact with the feed rail.
The method of claim 3,
The distance-maintaining portion and the close-
Wherein the chain pin is fixed to the shaft of the chain conveyor.
The method according to claim 1,
The frictional heat compression forming unit may be configured to,
A frictional heat compression molding chip in contact with the chain pin and having a depression corresponding to a shape of a head of a rivet in an inner direction;
An electric motor for rotating the compression-molding die between frictional heat in one direction; And
And an extension rod connecting the frictional heat compression molding chip and the electric motor,
When the frictional heat compression molding chip is rotated by the electric motor in contact with the chain pin, the end of the chain pin is heated by heat generated between the chain pin and the frictional heat compression molding chip, Wherein the chuck pin is thermoformed in a shape corresponding to the shape of the pin.
8. The method of claim 7,
The position-
A seating plate on which the electric motor is mounted;
A guide rail positioned below the seating plate; And
And a frictional heat generating unit for reciprocatingly reciprocating the seating plate positioned on the guide rail such that the frictional heat compression molding chip is in contact with the chain pin or spaced apart from the chain pin. Chain Pin Fixing System for Chip Conveyor Using Intermediate Compression Molding.
9. The method of claim 8,
Wherein the common-
A common actuator including a first piston rod reciprocally linearly moving in one direction;
Wherein when the first piston rod is inserted in the inward direction, the first piston rod is pushed by the first piston rod and drawn outward in an outward direction corresponding to an angle of 90 degrees with respect to the insertion direction of the first piston rod, And a second piston rod for pushing the piston rod toward the chain pin; And
An elastic member having an elastic force and adapted to allow the second piston rod to be drawn inward of the direction changing unit when the first piston rod is detached from the direction changing unit as the connecting member is connected to the direction changing unit, Wherein the chain pinning fixture for a chip conveyor using frictional heat compression molding is provided.
8. The method of claim 7,
The frictional heat compression forming unit may be configured to,
Wherein the chain transferring chain is provided at both side edges of the chip transferring chain.
10. The method of claim 9,
Wherein the common-
Characterized in that after the fixture plate is fixed on the fixed plate by the fixing portion, the common pressure is activated so that the first piston is inserted inward in the direction changing device Chain Pin Fixing System for Chip Conveyor.

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