CN221079952U

CN221079952U - Eutectic heating track

Info

Publication number: CN221079952U
Application number: CN202322979520.9U
Authority: CN
Inventors: 胡新平
Original assignee: Shenzhen Xinyichang Technology Co Ltd
Current assignee: Shenzhen Xinyichang Technology Co Ltd
Priority date: 2023-11-03
Filing date: 2023-11-03
Publication date: 2024-06-04
Anticipated expiration: 2033-11-03

Abstract

The utility model discloses a eutectic heating track, which comprises a main track body, a protective cover plate and a heating structure, wherein the top end of the main track body is provided with a chute, the bottom of the chute is sequentially provided with a first heating block, a second heating block and a third heating block along the length direction of the main track body, the top end of the second heating block is provided with a boss corresponding to the first heating block and the third heating block, the protective cover plate is arranged at the top end of the main track body, a slideway for a bracket to pass through is formed between the protective cover plate and the first heating block, the boss and the third heating block, the top end of the protective cover plate is provided with a die fixing opening communicated with the slideway, the die fixing opening corresponds to the boss, the heating structure comprises a plurality of heating rods, the bottom end of the main track body is provided with a plurality of mounting grooves along the width direction of the main track body at intervals, the plurality of heating rods are respectively arranged in the plurality of mounting grooves, each heating rod comprises a first rod body, a second rod body and a resistance wire, and the resistance wire is arranged in the second rod. The utility model improves the eutectic efficiency.

Description

Eutectic heating track

Technical Field

The utility model relates to the technical field of die bonding, in particular to a eutectic heating track.

Background

The utility model provides a eutectic heating track of current eutectic machine, generally, including the track body, protection apron and heating structure, the top of track body has the spout that extends along the length direction of track body, the bottom of spout is equipped with first heating block in proper order along the length direction of track body, second heating block and third heating block, first heating block and third heating block are located one side of spout bottom, the top of second heating block is equipped with the boss that corresponds with first heating block, third heating block, the top of first heating block, the top of third heating block all is parallel and level with the top of boss, protection apron sets up on the top of track body and is located the top of first heating block, second heating block and third heating block, form the slide that supplies the support to pass through between protection apron and the first heating block, the boss, the third heating block, the top of protection apron is equipped with the solid brilliant opening of solidifying with the slide intercommunication, gu brilliant opening corresponds with the boss. The heating structure comprises a plurality of heating rods arranged at the bottom end of the track body, the plurality of heating rods are arranged at intervals along the length direction of the track body, the length direction of the heating rods is the same as the width direction of the track body, the heating rods comprise rod bodies and resistance wires arranged in the rod bodies, the resistance wires are electrified to generate heat, heat can be transferred to the first heating block, the second heating block and the third heating block through the rod bodies and the track body, and therefore eutectic materials (such as solder paste) on a die-fixing position of a support passing through a slideway can be heated through a boss of the first heating block, the second heating block and the third heating block, the eutectic materials are melted, and therefore after a chip is placed on the die-fixing position of the support through a die-fixing opening through a die-feeding mechanism of a eutectic machine, the chip can be subjected to eutectic welding on the die-fixing position. In this kind of structure, the heat that conveys first heating piece, second heating piece and third heating piece through many heating rods is unanimous for the boss of first heating piece, second heating piece and third heating piece are unanimous to the temperature of eutectic material heating on the solid crystal position of support, and when the support passes through in the slide like this, the eutectic material on the solid crystal position is directly heated by the high temperature, appears the eutectic material because of the temperature rapid change appears the uneven condition of heating easily, leads to the eutectic material not fully melting, fully cooling, makes the chip can not firmly eutectic weld in the solid crystal position department of support, has reduced eutectic efficiency.

Disclosure of utility model

In order to overcome the defects in the prior art, the utility model provides the eutectic heating track, which can ensure that a chip can be firmly and eutectic welded at the die fixing position of a bracket, and improves the eutectic efficiency.

The technical scheme adopted for solving the technical problems is as follows:

The utility model provides a eutectic heating track, includes main track body, protection apron and heating structure, the top of main track body has the spout that extends along the length direction of main track body, the bottom of spout is equipped with first heating block, second heating block and third heating block in proper order along the length direction of main track body, first heating block and third heating block are located one side of spout bottom, the top of second heating block be equipped with first heating block, the boss that the third heating block corresponds, the top of first heating block, third heating block all with the top parallel and level of boss, the protection apron sets up the top of main track body and be located the top of first heating block, second heating block and third heating block, the protection apron with form the slide that supplies the support to pass through between first heating block, boss, the third heating block, the top of the protective cover plate is provided with a die bonding opening communicated with the slideway, the die bonding opening corresponds to the boss, the heating structure comprises a plurality of heating rods, the bottom of the main rail body is provided with a plurality of mounting grooves along the width direction of the main rail body at intervals, the plurality of heating rods are respectively arranged in the plurality of mounting grooves, the heating structure comprises a plurality of heating rods, the bottom of the main rail body is provided with a plurality of mounting grooves along the width direction of the main rail body at intervals, the length direction of the mounting grooves is the same as the length direction of the main rail body, the plurality of heating rods are respectively arranged in the plurality of mounting grooves, the heating rods comprise a first rod body, a second rod body and a resistance wire, the first end of the first rod body is provided with a first sealing cover, the second end of the first rod body is connected with the first end of the second rod body, the second end of the second rod body is provided with a second sealing cover, the second sealing cover is provided with a connector lug, the resistance wire is arranged in the second rod body and is electrically connected with the connector lug, the first rod body is positioned below the first heating block, and the second rod body is positioned below the first heating block, the second heating block and the third heating block.

As the preferable technical scheme, the first rod body and the second rod body are stainless steel pieces.

As a preferred technical scheme, the first heating block comprises a first sub heating block and a second sub heating block, the second sub heating block is located between the first sub heating block and the second heating block, the third heating block comprises a third sub heating block and a fourth sub heating block, the third sub heating block is located between the second heating block and the fourth sub heating block, the protective cover plate is located above the second sub heating block, the second heating block, the third sub heating block and the fourth sub heating block, the slide way is formed between the protective cover plate and the second sub heating block, the boss, the third sub heating block and the fourth sub heating block, the first rod body is located below the second sub heating block, the first end of the first rod body is located below the second sub heating block, the second heating block and the third sub heating block, and the second rod body is located between the second end of the second rod body and the third end of the fourth sub heating block.

As the preferred technical scheme, heating structure still includes the clamp plate, the bottom of main track body is in the position that corresponds a plurality of mounting grooves is equipped with the recess, the recess is located the below of second sub-heating piece, second heating piece and third sub-heating piece, the first end of first stick body is located between the first end inner wall of main track body's head end and recess, the second end inner wall of recess is located between the second end of second stick body and the end of main track body, the clamp plate sets up the bottom of recess, the top of clamp plate is provided with a plurality of concave positions along the width direction interval of clamp plate, a plurality of concave positions with many heating rods one-to-one, the first stick body and the second stick body of heating rod cooperate with the concave position that corresponds.

As the preferable technical scheme, heating structure still includes thermal-insulated subassembly, thermal-insulated subassembly includes upper heat-insulating sheet metal component, lower floor's heat-insulating sheet metal component, heat-insulating bottom plate and heat preservation cotton, upper heat-insulating sheet metal component, lower floor's heat-insulating sheet metal component and heat-insulating bottom plate set gradually the bottom of main track body, heat preservation cotton sets up between clamp plate and the upper heat-insulating sheet metal component.

As the preferable technical scheme, the heat insulation assembly further comprises a heat dissipation air pipe, wherein the heat dissipation air pipe is arranged between the upper-layer heat insulation sheet metal part and the lower-layer heat insulation sheet metal part, and two ends of the heat dissipation air pipe extend out from between the upper-layer heat insulation sheet metal part and the lower-layer heat insulation sheet metal part respectively.

As the preferable technical scheme, still include the backup pad, the backup pad sets up the top of the bottom of spout and second heating piece, the length direction of backup pad with the length direction of main track body is the same, the backup pad with first sub-heating piece, second sub-heating piece, boss, third sub-heating piece and fourth sub-heating piece are relative setting, one side that the backup pad is close to the first side inner wall of spout and first sub-heating piece, second sub-heating piece, boss, third sub-heating piece and fourth sub-heating piece between have first clearance, one side that the backup pad is close to the second side inner wall of spout and second side inner wall of spout have the second clearance, one side that the backup pad is close to the first side inner wall of spout be equipped with first step that first sub-heating piece and second sub-heating piece correspond and with second step that third sub-heating piece and fourth sub-heating piece correspond, first step with the top parallel and level of first sub-heating piece, second sub-heating piece and fourth sub-heating piece, second step and third sub-heating piece parallel and level.

As the preferred technical scheme, the backup pad includes along the length direction of main track body sets gradually first sub-backup pad, second sub-backup pad, third sub-backup pad, fourth sub-backup pad and fifth sub-backup pad, first sub-backup pad, second sub-backup pad, fourth sub-backup pad and fifth sub-backup pad can dismantle the setting respectively and be in the bottom of spout, third sub-backup pad can dismantle the setting and be in the top of second heating piece, first sub-backup pad and second sub-backup pad respectively with first sub-heating piece and second sub-heating piece are relative setting, one side that first sub-backup pad, second sub-backup pad are close to the first side inner wall of spout is equipped with first step, third sub-backup pad with the boss is relative setting, fourth sub-backup pad and fifth sub-backup pad respectively with third sub-heating piece and fourth sub-heating piece are relative setting, one side that fourth sub-backup pad is close to the first side inner wall of spout is equipped with the second step.

As the preferable technical scheme, first sub-backup pad, second sub-backup pad, fourth sub-backup pad, fifth sub-backup pad are equipped with first waist type hole respectively, the length direction in first waist type hole with the width direction of main track body is the same, the bottom of spout be equipped with first round hole that first waist type hole corresponds, install first fastener in first round hole and the corresponding first waist type hole, the third sub-backup pad is equipped with the second waist type hole, the length direction in second waist type hole with the width direction of main track body is the same, the second heating block be equipped with the second round hole that the second waist type hole corresponds, install the second fastener in second round hole and the second waist type hole that corresponds.

As the preferable technical scheme, the end of main track body is equipped with extension track body, the top of extension track body be equipped with the extension spout that the slide corresponds, one side inner wall of extension spout be equipped with the track step that the second step corresponds, the bottom of extension spout is formed with the brace table, the top of brace table with the top parallel and level of fourth sub-heating block.

The beneficial effects of the utility model are as follows: according to the heating structure, the plurality of heating rods are respectively arranged in the plurality of mounting grooves of the main track body, the length direction of each mounting groove is the same as that of the main track body, each heating rod comprises the first rod body, the second rod body and the resistance wire, the resistance wire is arranged in the second rod body, after the resistance wire is electrified and heated and is transmitted to the first heating block, the second heating block and the third heating block, the temperature of the eutectic material on the solid crystal position is gradually increased through the first heating block, the second heating block and the third heating block, then the temperature of the eutectic material reaches the highest point and then gradually falls to form a trapezoid temperature curve, so that when the support passes through the slide way, the eutectic material on the solid crystal position is gradually heated, then the eutectic material is completely melted at the highest point of the temperature to form uniform melt, and then the eutectic material is gradually cooled until solidification along with the gradual reduction of the heating temperature, so that the eutectic material on the solid crystal position of the support can be uniformly heated, the eutectic material can be sufficiently melted and fully cooled, the eutectic material on the solid crystal position of the support can be firmly welded, and the solid crystal position of the support can be improved, and the efficiency is ensured.

Drawings

The utility model will be further described with reference to the drawings and examples.

FIG. 1 is a schematic top view of a eutectic heating track according to the present utility model;

FIG. 2 is a schematic view of the eutectic heating track of FIG. 1 from the bottom angle;

FIG. 3 is a schematic view of the eutectic heating track shown in FIG. 1 taken from the die attach opening;

FIGS. 4 and 5 are schematic exploded views of the eutectic heating track of FIG. 1;

FIG. 6 is a schematic top view of the eutectic heating track of FIG. 1 with a protective cover removed;

FIG. 7 is a schematic view of the structure of the main rail body, the extension rail body and the plurality of heating rods of the eutectic heating rail of FIG. 1;

FIG. 8 is a schematic view of the thermal shield assembly of the eutectic heating track of FIG. 1;

FIG. 9 is a schematic view of the platen of the eutectic heating track of FIG. 1;

FIG. 10 is a schematic diagram of temperature profiles of the first, second, and third heating blocks of the eutectic heating track of FIG. 1 heating eutectic material on the die attach of the support.

Detailed Description

The conception, specific structure, and technical effects produced by the present utility model will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, features, and effects of the present utility model. It is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present utility model based on the embodiments of the present utility model. In addition, all the coupling/connection relationships referred to in the patent are not direct connection of the single-finger members, but rather, it means that a better coupling structure can be formed by adding or subtracting coupling aids depending on the specific implementation. The technical features in the utility model can be interactively combined on the premise of no contradiction and conflict.

Referring to fig. 1 to 6, the eutectic heating track provided by the present utility model includes a main track body 10, a protective cover 20, a support plate 30 and a heating structure 40.

The head end and the tail end of the main track body 10 are respectively arranged at the top end of a base, and the base is arranged on a machine table of the eutectic machine. The top end of the main rail body 10 has a chute 11 extending in the longitudinal direction of the main rail body 10. The chute 11 penetrates the head end and the tail end of the main rail body 10. The bottom of the chute 11 is provided with a first heating block, a second heating block 13 and a third heating block in sequence along the length direction of the main rail body 10. The first and third heating blocks are located at one side of the bottom of the chute 11, such as the front side. One side of the first heating block, the second heating block 13 and the third heating block, which is close to the first side inner wall (the first side inner wall is the front side inner wall) of the chute 11, is in contact with the first side inner wall of the chute 11, and one side of the second heating block 13, which is close to the second side inner wall (the second side inner wall is the rear side inner wall) of the chute 11, is close to the second side inner wall of the chute 11. The top end of the second heating block 13 is provided with a boss 131 corresponding to the first heating block and the third heating block. The top end of the first heating block and the top end of the third heating block are flush with the top end of the boss 131. One side of the first heating block and one side of the third heating block, which are close to the second side inner wall of the chute 11, are flush with one side of the boss 131, which is close to the second side inner wall of the chute. The protective cover 20 is disposed at the top end of the main rail body 10 above the first, second and third heating blocks 13, 13. A slideway 20a for the bracket 100 (see fig. 4) to pass through is formed between the protective cover plate 20 and the first heating block, the boss 131 and the third heating block, so as to realize positioning and guiding of the bracket 100. The top end of the protective cover plate 20 is provided with a die bonding opening 21 communicated with the slide way 20a, and the die bonding opening 21 corresponds to the boss 131. In practical application, the bracket 100 can be conveyed into the slideway 20a through the feeding mechanism of the eutectic machine, eutectic materials (such as solder paste) on the die bonding position of the bracket 100 can be heated through the first heating block, the second heating block 13 and the third heating block, when the bracket 100 passes through the die bonding opening 21, part of the area of the bracket 100 can be exposed out of the die bonding opening 21, the bracket 100 can be pressed against the top end of the boss 131 from the die bonding opening 21 through the pressing mechanism of the eutectic machine so as to fix the bracket 100, and meanwhile, a chip can be placed on the eutectic materials on the die bonding position of the bracket 100 through the die bonding opening 21 through the die feeding mechanism of the die bonding machine so as to realize die bonding at the die bonding position of the bracket 100, and after the die bonding is finished, the bracket 100 coming out of the slideway 20a can be discharged and recovered through the discharging mechanism of the eutectic machine.

In the present embodiment, the first heating block includes a first sub heating block 12a and a second sub heating block 12b which are sequentially disposed along the length direction of the main rail body 10. The second sub-heating block 12b is located between the first sub-heating block 12a and the second heating block 13. The third heating block includes a third sub-heating block 14a and a fourth sub-heating block 14b sequentially disposed along the length direction of the main rail body 10. The third sub-heating block 14a is located between the second heating block 13 and the fourth sub-heating block 14b. The protective cover 20 is located above the second sub-heating block 12b, the second heating block 13, the third sub-heating block 14a and the fourth sub-heating block 14b, and the above-mentioned slideway 20a is formed between the protective cover 20 and the second sub-heating block 12b, the boss 131, the third sub-heating block 14a and the fourth sub-heating block 14b. In practical application, the second sub-heating block 12b, the second heating block 13 and the third sub-heating block 14a can heat the eutectic material on the die bonding position of the bracket 100.

The support plate 30 is provided at the bottom of the chute 11 and the top end of the second heating block 13. The length direction of the support plate 30 is the same as the length direction of the main rail body 10. The protective cover 20 is located above the support plate 30. The support plate 30 is disposed in front-rear opposition to the first sub-heating block 12a, the second sub-heating block 12b, the boss 131, the third sub-heating block 14a, and the fourth sub-heating block 14 b. A first gap 121a is formed between one side of the support plate 30 near the first side inner wall of the chute 11 and the first, second, third and fourth sub-heating blocks 12a, 12b, and 131, and between one side of the support plate 30 near the second side inner wall of the chute 11 and the second side inner wall of the chute 11, a second gap 121b is formed therebetween, as shown in fig. 1, 3 and 6. The side of the support plate 30 near the inner wall of the first side of the chute 11 is provided with a first step 311 corresponding to the first sub-heating block 12a and the second sub-heating block 12b and a second step 331 corresponding to the third sub-heating block 14a and the fourth sub-heating block 14b, the first step 311 is flush with the top ends of the first sub-heating block 12a and the second sub-heating block 12b, and the second step 331 is flush with the top ends of the third sub-heating block 14a and the fourth sub-heating block 14 b. In practical application, during the process of conveying the support 100 into the slideway 20a and the process of conveying the support 100 out of the slideway 20a, the support 100 is partially rested on the first step 311 and the second step 331, so that the support 100 can be supported by the first step 311, the second step 331, the first sub-heating block 12a, the second sub-heating block 12b, the boss 131, the third sub-heating block 14a and the fourth sub-heating block 14b, and the support 100 is convenient to convey. Since the support plate 30 is not provided with the step corresponding to the boss 131 on the side close to the first side inner wall of the chute 11, the support 100 is in contact with only the side of the support plate 30 close to the first side inner wall of the chute 11 when the support 100 passes through the position corresponding to the boss 131, so that the support 100 does not break when the support 100 is pressed against the top end of the boss 131 by the pressing mechanism.

In the present embodiment, the support plate 30 includes a first sub-support plate 31a, a second sub-support plate 31b, a third sub-support plate 32, a fourth sub-support plate 33a, and a fifth sub-support plate 33b, which are sequentially disposed along the length direction of the main rail body 10. The first, second, fourth and fifth sub-supporting plates 31a, 31b, 33a and 33b are detachably disposed at the bottom of the chute 11, respectively, and the third sub-supporting plate 32 is detachably disposed at the top of the second heating block 13. The first sub-supporting plate 31a and the second sub-supporting plate 31b are respectively arranged in front-back opposite to the first sub-heating block 12a and the second sub-heating block 12b, and the first side of the first sub-supporting plate 31a and the second sub-supporting plate 31b, which is close to the inner wall of the first side of the chute 11, is provided with the first step 311. The third sub-supporting plate 32 is disposed opposite to the boss 131 in front-rear direction. The fourth sub-supporting plate 33a and the fifth sub-supporting plate 33b are respectively arranged in front-back opposite to the third sub-heating block 14a and the fourth sub-heating block 14b, and the side, close to the inner wall of the first side of the chute 11, of the fourth sub-supporting plate 14a and the fifth sub-supporting plate 14b is provided with the second step 331.

The first sub-supporting plate 31a, the second sub-supporting plate 31b, the fourth sub-supporting plate 33a and the fifth sub-supporting plate 33b are respectively detachably arranged at the bottom of the chute 11, and the third sub-supporting plate 32 is detachably arranged at the top end of the second heating block 13, specifically: the first sub supporting plate 31a, the second sub supporting plate 31b, the fourth sub supporting plate 33a and the fifth sub supporting plate 33b are respectively provided with a first waist-shaped hole 312, the length direction of the first waist-shaped hole 312 is the same as the width direction of the main rail body 10, the bottom of the chute 11 is provided with a first round hole corresponding to the first waist-shaped hole 312, and a first fastener such as a screw or the like is installed in the first round hole and the corresponding first waist-shaped hole 312. The third sub-support plate 32 is provided with a second waist-shaped hole 321, the length direction of the second waist-shaped hole 321 is the same as the width direction of the main rail body 10, the second heating block 13 is provided with a second round hole 132 corresponding to the second waist-shaped hole 321, and second fasteners such as screws and the like are installed in the second round hole 132 and the corresponding second waist-shaped hole 321. The waist-shaped hole is a hole with semicircular two ends and rectangular middle. The number of the first waist-shaped holes 312, the second waist-shaped holes 321, the first round holes and the second round holes 132 can be set according to practical situations. The first sub-supporting plate 31a, the second sub-supporting plate 31b, the third sub-supporting plate 32, the fourth sub-supporting plate 33a and the fifth sub-supporting plate 33b are convenient to assemble and disassemble through the structure, when one of the sub-supporting plates is damaged, only the damaged sub-supporting plate is needed to be replaced, compared with the existing supporting plate 30 which is of an integral structure, the cost can be saved, the replacement is convenient, and meanwhile, the width of the first gap 121a between the supporting plate 30 and the first sub-heating block 12a, the second sub-heating block 12b, the boss 131, the third sub-heating block 14a and the fourth sub-heating block 14b can be adjusted to adapt to the supports 100 with different widths, and the situation that the supports 100 are clamped or the supports 100 are deviated is avoided.

For example: if the first fastener and the second fastener are installed in the center of the first waist-shaped hole 312 and the corresponding first round hole, and the second fastener are installed in the corresponding second round hole 132, as shown in fig. 6, when the width of the bracket 100 is wider and the first gap 121a between the support plate 30 and the first sub-heating block 12a, the second sub-heating block 12b, the boss 131, the third sub-heating block 14a and the fourth sub-heating block 14b needs to be adjusted, the first fastener and the second fastener are detached, then the first sub-support plate 31a, the second sub-support plate 31b, the third sub-support plate 32, the fourth sub-support plate 33a and the fifth sub-support plate 33b are moved in the direction close to the second side inner wall of the chute 11 until one end of the first waist-shaped hole 312 close to the first side inner wall of the chute 11 corresponds to the corresponding first round hole, one end of the second waist-shaped hole 321 close to the first side inner wall of the chute 11 corresponds to the corresponding second round hole 132, and then the first fastener is installed in the first waist-shaped hole 321 close to the first side inner wall of the chute 11, and the first gap 132 is adjusted so that the width of the first fastener is adjusted in the first round hole 121. When the width of the bracket 100 is narrower, the width of the first gap 121a between the support plate 30 and the first sub-heating block 12a, the second sub-heating block 12b, the boss 131, the third sub-heating block 14a and the fourth sub-heating block 14b needs to be adjusted, the first fastening piece and the second fastening piece are detached, then the first sub-support plate 31a, the second sub-support plate 31b, the third sub-support plate 32, the fourth sub-support plate 33a and the fifth sub-support plate 33b are moved towards the direction close to the first side inner wall of the chute 11 until the end of the first waist-shaped hole 312 close to the second side inner wall of the chute 11 corresponds to the corresponding first round hole, the end of the second waist-shaped hole 321 close to the second side inner wall of the chute 11 corresponds to the corresponding second round hole 132, and then the first fastening piece is installed in the end of the first waist-shaped hole 312 close to the second side inner wall of the chute 11 and the corresponding first round hole, and the second fastening piece is installed in the end of the second waist-shaped hole 321 close to the second side inner wall of the chute 11 and the corresponding second round hole 132, and the width of the first gap 121a is adjusted.

It will be appreciated that in other embodiments, the first and second sub-support plates 31a and 31b may be one piece and the fourth and fifth sub-support plates 33a and 33b may be one piece.

As shown in connection with fig. 7 to 9, the heating structure 40 is provided at the bottom end of the main rail body 10. The heating structure 40 includes a plurality of heating rods 41, a platen 42, and an insulation assembly.

The bottom end of the main rail body 10 is provided with a plurality of mounting grooves 16 along the width direction of the main rail body 10 at intervals, and the length direction of the mounting grooves 16 is the same as the length direction of the main rail body 10. The plurality of heating rods 41 are respectively provided in the plurality of mounting grooves 16. In this embodiment, the number of the heating rods 41 is four, and the number of the mounting grooves 16 corresponds to the number of the heating rods 41, and it is understood that the number of the heating rods 41 and the number of the mounting grooves 16 may be set according to practical situations.

The heating rod 41 includes a circular first rod 411, a circular second rod 412, and a resistance wire (not shown). The first end of the first rod 411 is provided with a first sealing cover (not shown in the figure), the second end of the first rod 411 is connected with the first end of the second rod 412, the second end of the second rod 412 is provided with a second sealing cover (not shown in the figure), the second sealing cover is provided with a connector lug (not shown in the figure), and the resistance wire is arranged in the second rod 412 and electrically connected with the connector lug, and the connector lug is used for being electrically connected with a main control system of the eutectic machine. The first rod 411 is located below the second sub-heating block 12b of the first heating block, and a first end of the first rod 411 is flush with an end of the second sub-heating block 12b near the first sub-heating block 12 a. The second rod 412 is located below the second sub-heating block 12b, the second heating block 13 and the third sub-heating block 14a, and a space is provided between the second end of the second rod 412 and one end of the third sub-heating block 14a near the fourth sub-heating block 14 b. In practical application, after the resistance wire is electrified under the action of the connector lug, the resistance wire heats, heat can be firstly transferred to the first rod 411 and the second rod 412, and then transferred to the second sub-heating block 12b of the first heating block, the boss 131 of the second heating block 13 and the third sub-heating block 14a of the third heating block through the main track body 10, so that the eutectic material on the die attach of the bracket 100 can be heated through the second sub-heating block 12b, the boss 131 of the second heating block 13 and the third sub-heating block 14a, and the heat is transferred to the first rod 411, After the second rod 412, the temperature of the second rod 412 is highest, the temperature of the first rod 411 gradually decreases in a direction away from the second rod 412, so that the temperature at which the second sub-heating block 12b and the second rod 412 correspond to each other, the boss 131 of the second heating block 13, and the portion of the third sub-heating block 14a and the second rod 412 correspond to each other, for heating the eutectic material on the die holder of the bracket 100, is highest, while the temperature at which the second sub-heating block 12b and the first rod 411 correspond to each other, for heating the eutectic material on the die holder of the bracket 100, gradually decreases in a direction away from the second heating block 13, the temperature of the third sub-heating block 14a for heating the eutectic material on the die-bonding site of the support 100 is gradually reduced in a direction away from the second heating block 13 at a portion not corresponding to the second bar 412, so that the temperature for heating the eutectic material on the die-bonding site by the first heating block, the second heating block 13 and the third heating block is gradually increased, then reaches the highest point and then gradually decreased to form a temperature curve in a trapezoid shape, as shown in fig. 10, so that when the support 100 passes through the slide 20a, the eutectic material on the die-bonding site is gradually heated and then completely melted at the highest point of temperature to form a uniform melt, and then gradually cooling along with the gradual reduction of the heating temperature until solidification, so that the eutectic material on the die bonding position of the bracket 100 can be uniformly heated, the eutectic material can be fully melted and fully cooled, the chip can be firmly and eutectic welded at the die bonding position of the bracket 100, and the eutectic precision and efficiency are improved. The height of the eutectic heating track can be reduced by providing the plurality of heating rods 41 in the plurality of mounting grooves 16, respectively.

In this embodiment, the first rod 411 and the second rod 412 are made of stainless steel, so that heat conduction is facilitated, and it can be understood that the materials of the first rod 411 and the second rod 412 may be other materials. The first sealing cover and the second sealing cover are made of silica gel and the like, so that the sealing performance is good. The resistance wire is made of iron-chromium-aluminum alloy, nickel-chromium alloy and the like, and a heat conducting insulating layer is arranged between the resistance wire and the inner wall of the second rod body 412, and is used for conducting heat and insulating, and the heat conducting insulating layer is made of magnesium oxide.

The first rod 411 and the second rod 412 may be integrally formed or may be separately formed.

The bottom end of the main rail body 10 is provided with grooves 17 at positions corresponding to the plurality of mounting grooves 16, and the depth of the plurality of mounting grooves 16 is greater than the depth of the grooves 17. The groove 17 is located below the second sub-heating block 12a, the second heating block 13 and the third sub-heating block 14 a. The first end of the first rod 411 is located between the head end of the main rail body 10 and the first end inner wall of the groove 17, and the second end inner wall of the groove 17 is located between the second end of the second rod 412 and the tip end of the main rail body 10. The pressing plate 42 is provided at the bottom of the recess 17 by a fastener such as a screw or the like. The top of clamp plate 42 is provided with a plurality of concave positions 421 along the width direction interval of clamp plate 42, and a plurality of concave positions 421 and a plurality of heating rod 41 one-to-one, and the first stick body 411 and the second stick body 412 of heating rod 41 cooperate with corresponding concave position 421. The number of concave portions 412 corresponds to the number of heating rods 41, and is four. The pressing plates 42 are provided to fix the plurality of heating rods 41 in the corresponding mounting grooves 16, respectively. The mounting groove 16 and the concave 421 are both semicircular. The placement of the platen 42 at the bottom of the recess 17 further reduces the height of the eutectic heating track.

The heat insulation assembly comprises an upper heat insulation sheet metal part 43, a lower heat insulation sheet metal part 44, a heat insulation bottom plate 45, heat insulation cotton 46 and a heat dissipation air pipe 47.

The upper layer heat-insulating sheet metal member 43, the lower layer heat-insulating sheet metal member 44, and the heat-insulating bottom plate 45 are sequentially provided at the bottom end of the main rail body 10 by fasteners such as screws or the like. The heat preservation cotton 46 is arranged between the pressing plate 42 and the upper heat insulation sheet metal part 43, plays a role in heat preservation, ensures a heating effect and improves eutectic efficiency. The heat dissipation air pipe 47 is arranged between the upper layer heat insulation sheet metal part 43 and the lower layer heat insulation sheet metal part 44, two ends of the heat dissipation air pipe 47 extend out from between the upper layer heat insulation sheet metal part 43 and the lower layer heat insulation sheet metal part 44 respectively, and in actual application, cold air is introduced into one end of the heat dissipation air pipe 47, after entering the heat dissipation air pipe 47, the heat dissipation process can be completed through heat exchange with the upper layer heat insulation sheet metal part 43, and then the cold air comes out from the other end of the heat dissipation air pipe 47.

In this embodiment, two heat dissipation air pipes 47 are provided, and the two heat dissipation air pipes 47 are arranged side by side along the length direction of the main rail body 10. It will be appreciated that the number of the heat dissipation air pipes 47 may be set according to the actual situation.

Further, an extension rail body 50 is provided at the end of the main rail body 10, an extension chute 51 corresponding to the slideway 20a is provided at the top end of the extension rail body 50, and the length direction of the extension chute 51 is the same as the length direction of the main rail body 10. The inner wall of one side of the extension chute 51 is provided with a track step 511 corresponding to the second step 331, the bottom of the extension chute 51 is provided with a supporting table 52, the top end of the supporting table 52 is flush with the top end of the fourth sub-heating block 14b, and one side of the supporting table 52 close to the track step 511 is flush with one side of the fourth sub-heating block 14b close to the inner wall of the second side of the chute 11. The top end of the support stand 52 is flush with the rail step 511. The extended rail body 50 is provided, after the bracket 100 comes out of the slideway 20a, the bracket 100 can move at the top end of the supporting table 52, and the bracket 100 can rest on the rail step 511, thereby supporting the bracket 100 and facilitating the movement of the bracket 100.

While the preferred embodiment of the present utility model has been described in detail, the present utility model is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model, and the equivalent modifications or substitutions are included in the scope of the present utility model as defined in the appended claims.

Claims

1. The utility model provides a eutectic heating track, includes main track body, protection apron and heating structure, the top of main track body has the spout that extends along the length direction of main track body, the bottom of spout is equipped with first heating block, second heating block and third heating block in proper order along the length direction of main track body, first heating block and third heating block are located one side of spout bottom, the top of second heating block be equipped with first heating block, the boss that the third heating block corresponds, the top of first heating block, third heating block all with the top parallel and level of boss, the protection apron sets up the top of main track body and be located the top of first heating block, second heating block and third heating block, the protection apron with form between first heating block, boss, the third heating block and supply the slide that the support passed through, the top of protection apron be equipped with the solid brilliant opening of slide intercommunication, gu brilliant opening corresponds with the boss, its characterized in that,

The heating structure comprises a plurality of heating rods, a plurality of mounting grooves are formed in the bottom end of the main track body along the width direction of the main track body at intervals, the length direction of each mounting groove is identical to the length direction of the main track body, the plurality of heating rods are respectively arranged in the plurality of mounting grooves, each heating rod comprises a first rod body, a second rod body and a resistance wire, a first sealing cover is arranged at the first end of each first rod body, a second end of each first rod body is connected with the first end of each second rod body, a second sealing cover is arranged at the second end of each second rod body, a connector lug is arranged at the second sealing cover, the resistance wire is arranged in each second rod body and is electrically connected with the connector lug, each first rod body is located below each first heating block, and each second rod body is located below each first heating block, each second heating block and each third heating block.

2. The eutectic heating track of claim 1, wherein the first and second rods are each stainless steel pieces.

3. The eutectic heating track of claim 1, wherein the first heating block comprises a first sub-heating block and a second sub-heating block, the second sub-heating block is located between the first sub-heating block and the second heating block, the third heating block comprises a third sub-heating block and a fourth sub-heating block, the third sub-heating block is located between the second heating block and the fourth sub-heating block, the protective cover plate is located above the second sub-heating block, the second heating block, the third sub-heating block and the fourth sub-heating block, the protective cover plate forms the slide with the second sub-heating block, the boss, the third sub-heating block and the fourth sub-heating block, the first rod is located below the second sub-heating block, the first end of the first rod is flush with one end of the second sub-heating block near the first sub-heating block, the second rod is located below the second sub-heating block, the third sub-heating block and the fourth sub-heating block, and the second rod has a space between the second end of the second sub-heating block and the third rod.

4. The eutectic heating track of claim 3, wherein the heating structure further comprises a pressing plate, grooves are formed in the bottom end of the main track body at positions corresponding to the plurality of mounting grooves, the grooves are located below the second sub-heating blocks, the second heating blocks and the third sub-heating blocks, the first end of the first rod body is located between the head end of the main track body and the inner wall of the first end of the grooves, the inner wall of the second end of the grooves is located between the second end of the second rod body and the tail end of the main track body, the pressing plate is arranged at the bottom of the grooves, a plurality of concave positions are formed in the top end of the pressing plate at intervals along the width direction of the pressing plate, the concave positions are in one-to-one correspondence with the plurality of heating rods, and the first rod body and the second rod body of the heating rods are matched with the corresponding concave positions.

5. The eutectic heating track of claim 4, wherein the heating structure further comprises a heat insulation assembly, the heat insulation assembly comprises an upper heat insulation sheet metal part, a lower heat insulation sheet metal part, a heat insulation bottom plate and heat insulation cotton, the upper heat insulation sheet metal part, the lower heat insulation sheet metal part and the heat insulation bottom plate are sequentially arranged at the bottom end of the main track body, and the heat insulation cotton is arranged between the pressing plate and the upper heat insulation sheet metal part.

6. The eutectic heating track of claim 5, wherein the heat insulating assembly further comprises a heat dissipating air pipe disposed between the upper and lower heat insulating sheet metal parts, and wherein two ends of the heat dissipating air pipe extend from between the upper and lower heat insulating sheet metal parts, respectively.

7. The eutectic heating track of claim 3, further comprising a support plate, wherein the support plate is disposed at the bottom of the chute and at the top end of the second heating block, the length direction of the support plate is the same as the length direction of the main track body, the support plate is disposed opposite to the first sub-heating block, the second sub-heating block, the boss, the third sub-heating block and the fourth sub-heating block, a first gap is disposed between one side of the support plate, which is close to the first side inner wall of the chute, and the first sub-heating block, the second sub-heating block, the boss, the third sub-heating block and the fourth sub-heating block, a second gap is disposed between one side of the support plate, which is close to the second side inner wall of the chute, and the second step corresponding to the first sub-heating block and the second sub-heating block, the first step is flush with the top end of the first sub-heating block, the second sub-heating block, and the top end of the third sub-heating block are flush with the top end of the third sub-heating block.

8. The eutectic heating track according to claim 7, wherein the support plate comprises a first sub support plate, a second sub support plate, a third sub support plate, a fourth sub support plate and a fifth sub support plate which are sequentially arranged along the length direction of the main track body, the first sub support plate, the second sub support plate, the fourth sub support plate and the fifth sub support plate are detachably arranged at the bottom of the chute respectively, the third sub support plate is detachably arranged at the top end of the second heating block, the first sub support plate and the second sub support plate are oppositely arranged with the first sub heating block and the second sub heating block respectively, one side, close to the inner wall of the first side of the chute, of the first sub support plate and the second sub support plate is provided with the first step, the third sub support plate is oppositely arranged with the boss, the fourth sub support plate and the fifth sub support plate are oppositely arranged with the third sub heating block and the fourth sub heating block respectively, and one side, close to the inner wall of the first side of the fourth sub support plate and the fifth sub support plate, close to the first side of the chute, is provided with the second step.

9. The eutectic heating track according to claim 8, wherein the first sub-support plate, the second sub-support plate, the fourth sub-support plate and the fifth sub-support plate are respectively provided with a first waist-shaped hole, the length direction of the first waist-shaped hole is the same as the width direction of the main track body, the bottom of the sliding groove is provided with a first round hole corresponding to the first waist-shaped hole, a first fastening piece is installed in the first round hole and the corresponding first waist-shaped hole, the third sub-support plate is provided with a second waist-shaped hole, the length direction of the second waist-shaped hole is the same as the width direction of the main track body, the second heating block is provided with a second round hole corresponding to the second waist-shaped hole, and a second fastening piece is installed in the second round hole and the corresponding second waist-shaped hole.

10. The eutectic heating track according to claim 7, wherein an extension track body is arranged at the tail end of the main track body, an extension chute corresponding to the slideway is arranged at the top end of the extension track body, a track step corresponding to the second step is arranged on the inner wall of one side of the extension chute, a supporting table is formed at the bottom of the extension chute, and the top end of the supporting table is flush with the top end of the fourth sub heating block.