KR20010096427A - Constant dimension cutting method of heat sink material and its cutting apparatus - Google Patents

Abstract

PURPOSE: A sized cutting method for heat sink material and device therefor is provided to cut a substrate part of a heat sink material accurately and quickly to a length required for a heat sink as a product. CONSTITUTION: A stopper(6) is used to abut the root portion of a leading fin(2a) in a leading fin group(3) in a reference position beyond a cutting position(CP) from the forward side thereof in a heat sink material feed direction and thus limit a leading fin-side reference length(alpha) of a substrate part(1). A pusher(7) is used to push the heat sink material(M) so that the stopper abuts the root portion of the leading fin. With the stopper first positioned in the reference position, the pusher causes the stopper to abut the root portion of the leading fin of the leading fin group, and the leading fin side is cut away, after which the heat sink material is fed by a given length and a trailing fin side is cut off. The process is thereafter repeated.

Description

Method for cutting certain dimension of heat sink material and its device {CONSTANT DIMENSION CUTTING METHOD OF HEAT SINK MATERIAL AND ITS CUTTING APPARATUS}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for cutting a certain dimension of a heat sink material used as a cooling radiator for absorbing heat from electronic components, devices, and the like and dissipating it to the outside.

FIG. 13 shows a heat sink M integrally formed by an aluminum alloy. The heat sink material M is a group of fins in which fins 2 protrude a predetermined number (for example, 16 sheets) on a strip-shaped substrate portion 1 at a constant pitch p in the longitudinal direction of the substrate portion ( The fin group 3 is formed by forming a plurality of groups at regular intervals D in the longitudinal direction of the substrate part. The fin groups 3 are arranged in parallel in two rows in the longitudinal direction of the substrate part. The space S is formed between 3N and 3N over the entire length of the heat sink material, and the recessed groove 1b is formed in the center of the upper surface of the substrate 1 corresponding to the bottom of the space S. Formed. Moreover, the convex part 1a is provided in the lower surface of the board | substrate part 1 along the one edge. Thus, by cutting the substrate portion 1 of the heat sink material M for each of the fin groups 3, a heat sink m as shown in Figs. 14A and 14B is formed and used for use. It is intended to be provided.

The heat sink material M as described above is cut for each of the fin groups 3, but conventionally, a main vice holding the cutting material before and after the cutting position, and the cutting material are held and conveyed to the cutting position. The cutting length is used to cut the substrate portion 1 of the heat sink material M in the middle between the fin groups 3 and 3 by using an ordinary cutter provided with a feed material vice. The center of the pin groups 3 is cut while transferring a constant dimension to the length L '(see FIG. 13) to which the distance S amount between the pin groups 3 is applied to the length of one pin group 3. Then, both ends of the substrate portion of the cut article cut to length L 'are cut by machining or by hand in order to make the required length L as the heat sink m (L <L'). there was.

In the above cutting method, since the heat sink material M needs to be cut to a certain dimension and then both ends of the cut product need to be cut and cut again, the work efficiency is poor, and there are the following problems. That is, in this heat sink material M, although each fin 2 is formed in fixed pitch p, in reality, the pitch p may not be correct, and the fin group 3, 3 Similarly, there may be an error with respect to a predetermined dimension between the spaces D. Therefore, in the case of sequentially cutting the center of the pin group (3) and the pin group (3), the cutting arabes may cut on the center. While cutting several times, the cutting position may shift | deviate from the center part of the pin groups 3 and 3, and may cut off the inside of the pin group 3, and so on. In this case, the cutting operation is interrupted, the cutting reference position needs to be changed and set, and the work takes more time and time than necessary, resulting in further poor work efficiency.

SUMMARY OF THE INVENTION In view of the above circumstances, the present invention provides a cutting method capable of accurately and quickly cutting the substrate portion 10 of the heat sink material M to the final length required for the heat sink m as a product. It is an object to provide the device.

1 is an explanatory diagram illustrating a method for cutting a certain dimension according to the present invention;

2 is an explanatory diagram for explaining a constant size cutting method according to the present invention;

3 is an explanatory diagram for explaining a constant size cutting method according to the present invention;

4 is an explanatory diagram for explaining a constant size cutting method according to the present invention;

5 is an explanatory diagram for explaining a constant size cutting method according to the present invention;

6 is an explanatory diagram for explaining a constant dimension cutting method according to the present invention;

Figure 7 is a side view of the main part of the constant size cutting device according to the present invention,

8 is a front view of a constant dimension cutting device according to the present invention,

9 is a cross-sectional view taken along line X-X of FIG. 7;

10 is a plan view showing the rear portion of the constant size cutting device;

11 is an enlarged sectional view taken along the line Y-Y of FIG. 10;

12A is a partially enlarged view of FIG. 10, (B) is a sectional view taken along the line Z-Z of (A), (C) is a bottom view of a pair of pusher supporting cylinders,

13 is a perspective view showing a heat sink material; and

14A is a perspective view of a heat sink obtained by cutting a heat sink material for one fin group, and B is a side view of the same heat sink.

"Description of Symbols for Major Parts of Drawings"

M: Seat sink material M: Seat sink material

1: board | substrate part 1a of a heat sink material: the convex part of the lower surface of a board | substrate part

2: pin 3: pin group

3N: Pin Group 4: Main Vise

4a: fixed vise of main vise 4b: movable vise of main vise

5: Songjae vice 5a: Fixed vice of Songjae vice

5b: Operation Vise 6: Stopper for Songjae Vise

7: pusher 8: saw blade

CP: Cutting position by saw blade 9: Stopper drive means

10: pusher drive means 12: fluid pressure cylinder

13: Stopper holder 22: bogie

23: bogie drive mechanism 24: pusher support cylinder

24a: rear side fixed cylinder 24b: front side movable cylinder

24c: coil spring

According to the invention of claim 1, a plurality of pin groups 3 on which the pins 2 protrude a predetermined amount at a constant pitch in the longitudinal direction of the substrate portion are formed on the strip-shaped substrate portion 1 at regular intervals in the longitudinal direction of the substrate portion. Is a method of cutting the substrate portion 1 of the heat sink material M to a certain dimension by the saw blade 8 at the cutting position CP for each of the fin groups 3, and conveying the heat sink material at the cutting position CP. A stopper for contacting the attachment portion of the tip pin 2a of the lead pin group 3 at the reference position beyond the cutting position CP from the front side in the direction to restrict the reference pin α reference length α of the substrate portion 1 ( 6) and a pusher 7 for pressurizing and moving the heat sink material M from the rear end thereof so that the stopper 6 abuts against the attachment portion of the tip pin 2a. The stopper 6 is placed at the reference position, and the stopper 6 is brought into contact with the attachment portion of the tip pin 2a of the leading pin group 3 by the pusher 7, and then the tip end thereof. (2a) subjected to the cutting side, and then a predetermined length (L) of the heat sink material (M) and the conveying path, performs the cutting of the rear end pin (2b) side, is characterized in that after repeating the process.

According to the invention of claim 2, a plurality of pin groups 3 on which the pins 2 protrude a predetermined amount in a constant pitch in the longitudinal direction of the substrate portion are formed on the strip-shaped substrate portion 1 at regular intervals in the longitudinal direction of the substrate portion. An apparatus for cutting a predetermined dimension of the substrate portion 1 of the heat sink material M formed by the saw blade 8 at the cutting position CP for each of the fin groups 3, wherein the heat sink material is formed before and after the cutting position CP. Main vise 4 holding g), transfer material vise 5 holding gripping heat sink M and conveying to cutting position CP and heat sinking material conveying direction front side of cutting position CP The stopper 6 which contacts the cutting position CP from the reference position to the attachment portion of the tip pin 2a of the leading pin group 3 at the reference position, and regulates the reference length of the tip pin side of the substrate portion 1, and the stopper ( Stopper drive means 9 for driving the drive back and forth relative to the reference position, and heatsink so that the stopper 6 abuts on the attachment portion of the tip pin 2a. The pusher 7 which pressurizes the ash M from the rear end to a conveyance direction, and the pusher drive means 10 which drive the pusher 7 are characterized by the above-mentioned.

Claim 3 is a constant dimension cutting device of the heat sink material of Claim 2 WHEREIN: The stopper drive means 9 is provided in the predetermined position of the heat sink material conveyance direction forward and upper direction of a cutting position CP, and has a piston rod ( 11 is made up of a fluid pressure cylinder 12 that expands and contracts in an inclined direction with respect to a reference position, and a stopper holder 13 connected to the piston rod 11 of the cylinder 12. It is characterized in that the stopper 6 on the stopper holding portion 13 is moved back and forth with respect to the reference position by the stretching operation.

Claim 4 is a constant dimension cutting device of the heat sink material of Claim 2 WHEREIN: The pusher drive means 10 carries the trolley | bogie 22 which can move back and forth in the conveyance direction of the heat sink material M, and this trolley | bogie 22. It consists of a trolley | bogie drive mechanism 23 for driving and the pusher support cylinder 24 attached to the trolley 22 along the movement direction, and the pusher support cylinder 24 is a rear fixed cylinder fixed to the trolley | bogie 22. (24a), the all-side movable cylinder (24b) in which the elastic free passage is inserted into the fixing cylinder (24a), and the spring (24c) mounted between the two cylinders (24a, 24b) to protrude and pressurize the movable cylinder forward. The pusher 7 is fixed to the front-end | tip part of the movable cylinder 24b, It is characterized by the above-mentioned.

Claim 5 is a constant dimension cutting device of the heat sink material of Claim 2 WHEREIN: The heat sink material M is provided with the fin group 3 in parallel in 2 rows state in the longitudinal direction of a board | substrate part, and both fin group rows 3N, The space portion S is formed between the entirety of the heat sink material longitudinal direction between 3N), and the main vice 4 and the transfer material vice 5 each support a fixed vice supporting the lower surface of the heat sink material M. FIG. (4a, 5a) and movable vices (4b, 5b) located above the fixed vices (4a, 5a), the movable vices (4b, 5b) are heat supported on the fixed vices (4a, 5a) It fits in the space S between both fin group 3N and 3N of the sink material M, and is separated, and the board | substrate 1 of the heat sink material M is gripped between the fixed vices 4a and 5a. It is characterized in that it is fixed.

Embodiment of the Invention

1 to 6 show a cutting method of the heat sink material M according to the present invention. Here, although the heat sink material M has shown the short thing which has two fin groups 3, the actual heat sink material M is long in which many fin groups 3 were formed. In these drawings, 4 is a main vice holding the heat sink material M before and after the cutting position CP, 5 is holding the heat sink material M, and conveys it with respect to the cutting position CP, ie, Songjae vice that transfers certain dimensions. 6 is a stopper, which is the tip pin 2a of the leading pin group 3 at the reference position beyond the predetermined length α from the front side of the heat sink material conveying direction of the cutting position CP. The reference length of the tip end side of the board | substrate part 1 is fixed uniformly in contact with the attachment part of (). Here, a reference position is taken as the position of the front-end | tip of the stopper 6 shown by the virtual line drawing of FIG. 1, and the solid line of FIG. 7 is a pusher which pressurizes and moves the heat sink material M to the conveyance direction from the rear end so that it may contact the attachment part of the front-end pin 2a of the stopper 6. As shown in FIG. Moreover, the stopper drive means and the pusher drive means will be described later.

The tip pin side tip pin side reference length refers to the tip protrusion length α of the substrate 1 from the attachment portion of the tip pin 2a, and the tip of the stopper 6 is shown in FIG. This is the distance between the cutting position CP and the attachment portion of the tip pin 2a when abutting the attachment portion of the tip pin 2a. As shown in Fig. 14, the length from the attachment portion of the leading end pin 2a to the rear end pin 2b is Lo, and the rear projecting length of the substrate portion 1 from the attachment portion of the rear end pin 2b is β. In this case, the required length L as the heat sink m is L = Lo + α + β, and this length L is the cutting length of the heat sink material M, and the constant length feed length of the transfer material vice 5 is obtained. do. The number of fins 2 formed in one heat sink m, that is, one fin group 3 is constant, and is set to, for example, 16.

The main vise 4 includes a fixed vise 4a for supporting the substrate portion 1 of the heat sink material M, and a movable vise 4b positioned above and above the fixed vise 4a. And a hydraulic cylinder 4c (see FIG. 7) for opening and closing the movable vice 4b in the vertical direction with respect to the fixed vice 4a, and the movable vice 4b is a heat on the fixed vice 4a. The board | substrate 1 is hold | maintained between the stationary vise 4a at the time of moving down by pinching | interleaving with respect to the space | interval S between the both fin groups 3N and 3N of the sink material M. . In addition, when holding the board | substrate part 1, the movable vice 4b is fitted in the recessed groove part 1b of the board | substrate part 1. As shown in FIG. The transmission material vice 5 is not shown, but the movement table which advances and moves a predetermined stroke (cutting length) with respect to a cutting position CP by a forward and backward drive means, and the fixed vice 5a which moves integrally with this moving table. And a movable vice 5b located above and above the fixed vice 5a, and a hydraulic cylinder 5c for opening and closing the movable vice 5b in a vertical direction with respect to the fixed vice 5a (Fig. 7). Reference).

In order to cut the heat sink material M to a certain size, first, the tip of the leading fin group 3 is positioned near the cutting position CP, and the fixed vice 5a and the movable vice 5b of the transfer material vice 5 are positioned. The heat sink material M is fixed by this, and cutting | disconnection is made so that the reference pin side reference length of the board | substrate part 1 may become predetermined (alpha). That is, as shown in FIG. 1, the evacuation of the stopper 6 is shown by the solid line in FIG. 1 in a state where the main vice 4 is opened, the transmission material vice 5 is closed, and the heat sink material M is fixed. From the position, the stopper 6 is placed at the reference position shown by the virtual line of the same drawing and the solid line of FIG. 2, and after opening the transmission material vice 5 as shown in FIG. The heat sink material M is pushed by the pusher 7 so as to abut on the attachment portion of the tip pin 2a. As a result, the heat sink material M is regulated by the predetermined length of the tip pin side reference length of the head fin group 3, that is, the length from the attachment portion of the tip pin 2a to the cutting position CP.

In this way, if the stopper 6 and the pusher 7 regulate the reference pin side reference length of the lead pin group 3 to a constant α, as shown in Fig. 3, the main vise 4 is closed and the heat sink material M ), The pusher 7, which was at the reference position, is retracted to the standby position, and the cutting is performed at the tip pin 2a of the head pin group 3 by the saw blade 8 in this state. After opening the heat sink material M, the sending material vice 5 returns to a retreat limit position as shown in FIG.

After finishing cutting in the top pin 2a of the top pin group 3 as mentioned above, the sending material which grasped the board | substrate part 1 of the heat sink material M at the retreat limit position as shown in FIG. The vise 5 is conveyed to the advance limit position by the required length L (see FIG. 14) as the heat sink m, and the state shown in FIG. Thereafter, as shown in FIG. 6, the main vise 4 is closed to grasp and fix the substrate portion 1 of the heat sink material M before and after the cutting position CP, and to the saw blade 8 in this state. The board | substrate part 1 is cut | disconnected by the rear end pin 2b side of the tip pin group 3 by this. As a result, the first heat sink m (see FIG. 14) is obtained.

In this way, after cutting out the 1st heat sink m, the heat sink material 5 is closed, the heat sink material M is fixed, the main vice 4 is opened, and the stopper 6 is solid line of FIG. It is located at the reference position shown by the virtual line of the same drawing from the retraction position shown by the figure. Then, as shown in Fig. 2, when the pine material vice 5 is opened, the heat sink material M is pressurized by the pusher 7, so that the tip of the stopper 6 is the tip of the leading pin group 3 ( The abutment part of 2a) abuts, and by this, the heat sink material M is set to predetermined | prescribed alpha of the front end fin side reference length of the head fin group 3. Thereafter, the second heat sink m is obtained by passing through the above-described process described with reference to FIGS. 3 to 6. The third and subsequent sheet sinks m can also be obtained by repeating the same steps as above.

As described above, this constant-size cutting method places the stopper 6 at the reference position every time the heat sink material M is cut in one portion (one heat sink m) of the fin group 3. Since the protruding length α of the substrate portion 1 from the end pin side reference length of the substrate portion 1, that is, the attachment portion of the tip pin 2a, is regulated, the pitch p and the pin group of the pin 2 are limited. Even if there is a manufacturing error in the dimensions of the mutual space (D), the error is only a slight error caused by one fin group 3, and the cutting point of the heat sink material M is shifted to the inside of the fin group 3. There is no going in. Therefore, since the cutting of the cutting length L necessary for the heat sink m can be reliably performed between the adjacent pin groups 3 and 3, there is no occurrence of defective products and no need to fix the defective place again. Work efficiency can be improved. In addition, in this cutting method, since two cutting operations are required to cut out one heat sink m, the cutting work efficiency is further improved.

7 to 12 show in detail the main part of the constant-size cutting device according to the present invention, Figure 7 is a side view of the main part of the same cutting device, Figure 8 is a front view, Figure 9 is X-X of Figure 7 Line cross section. As shown in Fig. 11, the constant size cutting device is a device for simultaneously cutting a predetermined number of heat sink materials M arranged in parallel in a plurality (10 in the illustrated example) in parallel, and the main vise 4 and the transfer material vise ( 5), a stopper 6, a stopper drive means 9 for driving the stopper 6 forward and backward with respect to a reference position, a pusher 7, a pusher drive means 10 for driving the pusher, and the like.

As shown in FIG. 7, the stopper drive means 9 is provided in a predetermined position in front of the heat sink material conveying direction of the cutting position CP and also upward, so that the piston rod 11 is a reference near the cutting position CP. It consists of the hydraulic cylinder 12 which expands and contracts in a direction oblique to a position, and the stopper holding part 13 interlocked with the piston rod 11 of this cylinder 12, and the stopper is obtained by the expansion and contraction operation of the cylinder 12. The stopper 6 on the holding table 13 is driven forward and backward with respect to the reference position as shown in FIG.

The hydraulic cylinder 12 is attached to the front side bracket 15 of the apparatus frame 14. As shown in FIG. 8, the stopper holder 13 is formed long in the direction orthogonal to the heat sink material conveyance direction, and the piston rod 11 of the cylinder 12 is being fixed to the longitudinal direction center part. Guide rods 16 and 16 are arranged on both sides of the cylinder 12, and one end of each of the guide rods 16 and 16 is connected to the stopper holder 13, and the other end thereof is described above. The rod support cylinders 17 and 17 provided in the bracket 15 are respectively supported by sliding freely.

As shown in FIGS. 7 and 8, the stopper 6 is formed of a strip-shaped plate body having a tip portion formed in a knife shape and extending in a direction orthogonal to the heat sink material conveying direction. The stopper holder 13 It is fixed to the front end at the horizontal position and is moved and adjusted in the front-rear direction at this horizontal position. Thus, it can move forward and backward with respect to the reference position by the expansion and contraction operation of the cylinder 12.

As described above, the main vice 4 is composed of a fixed vice 4a, a movable vice 4b and a hydraulic cylinder 4c. The fixed vise 4a is elongated in the direction orthogonal to the heat sink conveyance direction. As shown in FIGS. 1 to 6 and 9, the concave groove 18 is formed on the upper surface of the fixed device 4a. The concave groove portion 1a, which is formed at a constant pitch and protrudes downward along one side edge of the lower surface of the substrate portion 1 of the heat sink material M, is fitted freely in each concave groove portion 18. have. As can be seen from Figs. 7 and 9, the movable vise 4b is connected to the lower end of the long vise mount 19 in a direction orthogonal to the heat sink material conveying direction at regular intervals in the longitudinal direction thereof. As described above, the substrate portion 1 is inserted into and separated from the space S between the fin groups 3N and 3N of the heat sink material M, and moves to the fixed vice 4a when moved downward. It is supposed to hold and hold. The vise mount 19 is lifted and driven by the hydraulic cylinder 4c, and is fixed to the pair of guide rods 20 and 20 and the device base 14 side fixed to the vise mount 19 side. The guides are slidably supported by the rod support cylinders 21 and 21.

The material vice 5 has the same structure as the above-described main vice 4 except that the stationary vice 5a and the movable vice 5b reciprocate integrally with a moving table (not shown). Omit. In addition, although the saw blade 8 consists of a circular saw, it abbreviate | omits illustration, By driving this circular saw along cutting position CP, it is made to cut | disconnect the several heat sink material M arrange | positioned in parallel simultaneously. In addition, in FIG. 7, 30 is a belt conveyor for carrying out the heat sink material m obtained by cut | disconnecting a fixed dimension in cutting position CP to the front.

FIG. 10 is a plan view showing the rear portion of the constant size cutting device not shown in FIG. 7, in which the pusher drive means 10 is shown. Fig. 11 is an enlarged cross-sectional view taken along the line Y-Y of Fig. 10, (A) is a partially enlarged view of Fig. 10, (B) is a cross-sectional view taken along the line Z-Z of (A), and (C) is a pair of pushers. It is a bottom view of the support cylinder 24. As shown in FIG. 10, the pusher driving means 10 includes a trolley 22 movable around the transfer direction of the heat sink material M, and a trolley driving mechanism 23 for driving the trolley 22. And the pusher support cylinder 24 attached to the trolley 22 along the moving direction thereof.

The pusher support cylinder 24 is a set of one to one, and one set is applied per one of the plurality (here 10) heat sink material M cut | disconnected simultaneously. Therefore, 10 sets of pusher support cylinders 24 are used here. Each pusher support cylinder 24 is a rear side fixed cylinder 24a fixed to the lower surface of the trolley | bogie 22, the all-side movable cylinder 24b by which the fixed cylinder 24a was freely stretched, and both cylinders. It consists of the coil spring 24c which is provided between 24a and 24b and pushes the movable cylinder 24b forward, and the all-side movable cylinder 24b is supported by the support cylinder 24d freely. And the rear end of each pusher 7 is being fixed to the front-end | tip of the all-side movable cylinder 24b, 24b of a pair of pusher support cylinder 24,24.

As shown in FIG. 10, the trolley | bogie drive mechanism 23 mounts the sprocket chains 27 and 27 along the both sides of the transmission material frame 26 arrange | positioned along the conveyance direction of the heat sink material M. As shown in FIG. It is hypothesized, and the trolley | bogie 22 is connected to this, and the sprocket chain 27 on one side is made to drive | work intermittently by the stationary motor (not shown). Thus, in the operation of the pusher 7, each of the pushers 7 is intermittently driven forward by the balance driving mechanism 23 whenever the heat sink material M is conveyed by a predetermined cutting length. ) Is press-bonded to the rear end of each heat sink material (M). When the front end of each pusher 7 strikes the rear end of the heat sink material M, a shock-absorbing action by the coil spring 24c inserted between the rear fixed cylinder 24a and the front movable cylinder 24b is mounted. Since the impact is alleviated by this, there is no possibility of damaging the pusher 7 and the bogie drive mechanism 23.

In addition, during the cutting operation of the heat sink material M, the pusher 7 is always press-bonded to the rear end of the heat sink material M to apply pressure to the heat sink material M. FIG. Therefore, in this trolley | bogie drive mechanism 23, when the pusher 7 presses the heat sink material M in the state in which the heat sink material M is being fixed by the main vice 4 or the sending material vice 5, When the pressure is above a certain level, the rotating shaft of the sprocket chain 27 is configured to revolve.

As shown in FIG. 10 and FIG. 11, the plurality of heat sinks M conveyed along the transmission frame 26 is guided by a guide shaft 28 of the north-west side which is temporarily installed on the transmission frame 26. Each is guided along a straight track. That is, in each guide support shaft 28, the annular groove 29 in which the protrusion part 1a which protruded in the board | substrate part 1 of each heat sink material M is slidingly engaged freely is formed at the required interval. Each heat sink material M is guided by the annular groove 29 and the convex jaw portion 1a which is freely fitted to the annular groove 29 and is appropriately conveyed.

According to the constant size cutting method according to claim 1, each time the heat sink material is cut for one fin group (one heat sink), the stopper is placed at the reference position, and the reference pin side reference length of the substrate portion, that is, the attachment portion of the tip pin. Since the protruding length of the end of the substrate from the substrate is regulated, even if there is a rewrite error in the pitch of the fin or the spacing between the fin groups, the error is extremely small as an error for one fin group, and the cut point of the heat sink material is the inside of the fin group. Since the cutting length required for the heat sink can be reliably cut from the outside of the fin group, there is no occurrence of defective products and no need to fix the defective portion, so that the work efficiency This is improved. In addition, in this cutting method, since two cutting operations are required to cut out one heat sink, cutting operation efficiency can be further improved.

According to the constant size cutting device according to claim 2, the main vice holding the heat sink material before and after the cutting position, the transfer material holding the heat sink material and conveying it to the cutting position and the heat sink material conveying direction forward of the cutting position A stopper for contacting the attachment portion of the leading pin group of the leading pin group at the reference position beyond the cutting position from the side to restrict the reference length of the tip pin side of the substrate, a stopper driving means for driving the stopper back and forth with respect to the reference position, and the stopper at the tip end. A pusher for pressurizing and moving the heat sink material from the rear end thereof in the conveying direction so as to contact the attachment portion of the fin, and a pusher driving means for driving the pusher, can effectively implement the constant-cutting method according to claim 1. .

As described in claim 3, the stopper drive means is provided at a predetermined position in front of the heat sink material conveying direction at the cutting position and above the predetermined position so that the piston cylinder extends and contracts in the inclined direction with respect to the cutting position, and the piston of the cylinder. Since the stopper holding part is connected to the rod, the structure of the driving means can be simplified and compact, and at the same time, the stopper is cut to the seat sink material during cutting or the heat sink material being discharged while the stopper is moved to the reference position. There is no problem to touch

As described in Claim 4, a pusher drive means consists of a trolley which moves back and forth in the conveyance direction of a heat sink material, the trolley | bogie drive mechanism which drives a trolley | bogie, and a pusher support cylinder attached to the trolley | bogie along the moving direction, A pusher support cylinder Is composed of a rear fixed cylinder fixed to the trolley, an all-side movable cylinder freely fitted in the fixed cylinder, and a spring for protruding and pressing the movable cylinder forwardly, so that the pusher is fixed to the distal end of the movable cylinder. When the tip of the pusher hits the rear end of the heat sink material, the shock is alleviated by the cushioning action of the spring mounted between the rear fixed cylinder and the front movable cylinder. There is no such thing as damaging it.

As described in claim 5, the main vice and the songjae vice each have a fixed vise supporting the lower surface of the heat sink material and a movable bar located above the fixed vise, and the movable vise is a heat sink supported on the fixed vise. The heat sink material can be reliably fixed without damaging the fin since it is inserted into and separated from the space between both fin groups of the ash, and the substrate portion of the heat sink material is gripped and fixed between the fixed vise.

Claims (5)

The board portion of the heat sink material formed by forming a plurality of fin groups in which the pins protrude a predetermined number in a constant pitch in the longitudinal direction of the substrate portion on the strip-shaped substrate portion at regular intervals in the longitudinal direction of the substrate portion is fixed by a saw blade at the cutting position for each fin group. In the method of cutting, A stopper which abuts the leading pin side of the leading pin group at the reference position beyond the cutting position from the front side of the heat sink material conveying direction at the cutting position to restrict the reference length of the leading pin side of the substrate portion, and the stopper is attached to the tip pin attachment portion. A pusher is installed to pressurize and move the heat sink material from the rear end to the conveying direction so as to abut. First, the stopper is placed at the reference position, and the stopper is brought into contact with the attachment portion of the tip pin of the leading pin group by the pusher. A method for cutting a constant dimension of a heat sink material, wherein the fin side is cut, then the heat sink material is conveyed by a predetermined length, the rear end fin is cut, and the above steps are repeated. The board portion of the heat sink material formed by forming a plurality of fin groups in which the pins protrude a predetermined number in a constant pitch in the longitudinal direction of the substrate portion on the strip-shaped substrate portion at regular intervals in the longitudinal direction of the substrate portion is fixed by a saw blade at the cutting position for each fin group. In the device for cutting, The main vice holding the heat sink material before and after the cutting position, the transfer material grip holding the heat sink material and conveying it to the cutting position, and the reference position exceeding the cutting position from the front side of the heat sink material conveying direction of the cutting position. A stopper which abuts against the attachment pin of the tip pin of the fin group to regulate the reference length of the tip pin side of the substrate, a stopper driving means for driving the stopper back and forth with respect to the reference position, and the heat sink so that the stopper abuts against the attachment part of the tip pin. And a pusher for pressurizing and moving the ash from the rear end to the conveying direction, and a pusher driving means for driving the pusher. 3. A stopper driving means according to claim 2, wherein the stopper driving means is provided at a predetermined position in front of and above the heat sink material conveying direction at the cutting position, and the fluid pressure cylinder in which the piston rod expands and contracts in an inclined direction with respect to the reference position, And a stopper holding portion connected to the piston rod, wherein the stopper on the stopper holding portion is moved back and forth with respect to the reference position by the expansion and contraction operation of the cylinder. 3. The pusher driving means according to claim 2, wherein the pusher driving means comprises a trolley which is movable back and forth in the conveying direction of the heat sink material, a trolley driving mechanism for driving the trolley, and a pusher support cylinder attached to the trolley along the moving direction. Silver is composed of a rear fixed cylinder fixed to the trolley, an all-side movable cylinder fitted with an elastic free passage inserted into the fixed cylinder, and a spring mounted between both cylinders to protrude and pressurize the movable cylinder forward. A fixed size cutting device for heat sink material, characterized in that the pusher is fixed. The heat sink material according to claim 2, wherein the heat sink material is formed by arranging the fin group in two rows in the longitudinal direction of the substrate portion, and forming a space portion between the fin group rows over the entire length of the heat sink material. Each has a fixed vise supporting the lower surface of the heat sink material and a movable vise located above the fixed vise, and the movable vise is inserted into and separated from the space between both fin groups of the heat sink material supported on the fixed vise. And the substrate portion of the heat sink material is gripped and fixed between the stationary vise.