Gas channel communication structure for turret type die bonding device

Abstract

Disclosed in the present invention is a gas channel communication structure for a turret type die bonding device, comprising a gas guide disc (10) and a friction disc (20). The gas guide disc (10) comprises a body portion (11), and the body portion (11) is in a circular ring shape; a plurality of first vent holes (16) are formed in the body portion (11); the friction disc (20) comprises a disc body portion (21) and an annular protruding portion (22); a plurality of third vent holes (24) are formed in the annular protruding portion (22); the friction disc (20) is movably connected to the gas guide disc (10); the side surface of the annular protruding portion (22) distant from the disc body portion (21) abuts against a side surface of the body portion (11), such that the side surface of the annular protruding portion (22) distant from the disc body portion (21) can close the first vent holes (16) of the body portion (11); the central axis of the annular protruding portion (22) and the central axis of the body portion (11) are located on the same straight line; and when the gas guide disc (10) is static and the friction disc (20) rotates about the central axis of the annular protruding portion (22) of the friction disc (20), the side surface of the annular protruding portion (22) distant from the disc body portion (21) can rotate relative to the side surface of the body portion (11). When the gas channel communication structure conveys a working gas to a bonding head, a flexible pipe connected to the bonding head can be prevented from being tangled due to rotation of the bonding head.

Description

Air path communication structure for turret die bonder TECHNICAL FIELD

[0001] The present application relates to the field of semiconductor chip processing and packaging, and particularly relates to an air path communication structure for a turret die bonder. BACKGROUND

[0002] A die bonder, also known as a die bonder, is the most critical and core device in the die attach process of chip packaging and testing. The die bonder is used to pick up the chip from the wafer that has been cut and place it on the corresponding die flag of the lead frame. The chip and the lead frame are bonded together by using epoxy. The quality of the die bonder will directly affect the yield and cost of chip packaging and testing, and thus affect the subsequent wire bonding process. In practical applications, the higher the requirement for the unit time capacity UPH (Unit Per Hour) of the chip testing process, the higher the requirement for the precision and speed of the die bonder in completing the die attach process. Therefore, the die bonder needs to meet both the precision and speed requirements of the die attach process to meet the needs of market applications.

[0003] The die bonder of the turret die bonder uses working gas to adsorb the chip, thereby realizing the picking up and placing of the chip. A flexible pipeline is needed to deliver the working gas to the die bonder of the turret die bonder. However, during the working process of the turret die bonder, the die bonder rotates around a certain axis, and the rotating die bonder drives the flexible pipeline connected thereto to rotate together. Therefore, the rotation of the die bonder easily causes the flexible pipeline connected to the die bonder to be wound into a bundle, thereby causing the working gas to be unable to be delivered to the die bonder.

[0004] In view of the above reasons, for the turret die bonder, how to design and improve the air path communication structure for delivering the working gas to the die bonder, which can avoid the flexible pipeline connected to the die bonder from being wound into a bundle when the air path communication structure delivers the working gas to the die bonder, has become a technical problem that needs to be solved by those skilled in the art. SUMMARY

[0005] The technical problem to be solved by the present application is to provide an air path communication structure for a turret die bonder, which can avoid the flexible pipeline connected to the die bonder from being wound into a bundle due to the rotation of the die bonder when the air path communication structure delivers the working gas to the die bonder.

[0006] To solve the above technical problems, the present application adopts the following technical scheme:

[0007] The application provides a gas path communication structure for a turret type die bonding device, which comprises a gas guide disc and a friction disc.

[0008] Preferably, each first gas passage hole is uniformly distributed along the same circumferential line.

[0009] Preferably, each third gas passage hole is uniformly distributed along the same circumferential line.

[0010] Preferably, the gas path communication structure further comprises a plurality of first flexible pipes, one end of each first flexible pipe is connected to the first gas passage hole of the body part of the gas guide disc through a gas path joint, all the first flexible pipes are fixedly arranged on the same side of the gas guide disc, and the other end of each first flexible pipe is connected to a gas source of working gas.

[0011] Preferably, the gas path communication structure further comprises a tubular transmission shaft; the tubular transmission shaft is cylindrical and hollow; the tubular transmission shaft comprises a tubular body and a connecting portion; the tubular body is cylindrical and hollow; the connecting portion is annular; one end of the tubular body is fixedly provided with the connecting portion; the central axis of the connecting portion and the central axis of the tubular body are located on the same straight line, and the hole diameter of the central hole of the connecting portion matches the inner diameter of the tubular body, so that the central hole of the connecting portion and the internal cavity of the tubular body are connected to form an integral cylindrical cavity; the connecting portion of the tubular transmission shaft is provided with a plurality of fourth air holes, the center points of all the fourth air holes are located on the same circumferential line, and all the fourth air holes are through holes penetrating the thickness of the connecting portion; a plurality of window-shaped holes are arranged on the tubular wall of the tubular body close to the connecting portion, and all the window-shaped holes are through holes penetrating the thickness of the tubular wall of the tubular body.

[0012] Further preferably, the shapes of all the window-shaped holes are the same, and the sizes of all the window-shaped holes are the same.

[0013] Further preferably, each window-shaped hole is distributed in a ring around the tubular wall of the tubular body and is uniformly distributed.

[0014] Further preferably, each fourth air hole is uniformly distributed along the same circumferential line.

[0015] Further preferably, the side of the friction disc away from the annular protruding portion is fixedly connected with the connecting portion of the tubular transmission shaft, the size of the connecting portion of the tubular transmission shaft matches the size of the disc body portion of the friction disc, the diameter of the circumferential line on which the center points of the fourth air holes of the connecting portion of the tubular transmission shaft are located is equal to the diameter of the circumferential line on which the center points of the third air holes of the annular protruding portion of the friction disc are located, and the circumferential distance between any two adjacent fourth air holes is equal to the circumferential distance between any two adjacent third air holes, so that each fourth air hole is connected with a third air hole.

[0016] Further preferably, a circular flange portion is fixedly arranged on the side of the disc body portion of the friction disc away from the annular protruding portion and around the central hole of the disc body portion, and the central axis of the flange portion is located on the same straight line as the central axis of the disc body portion; the flange portion of the disc body portion of the friction disc is inserted into the central hole of the connecting portion of the tubular transmission shaft, and the inner wall of the connecting portion of the tubular transmission shaft abuts against the outer wall of the flange portion of the disc body portion of the friction disc, and the flange portion of the disc body portion of the friction disc limits the connecting portion of the tubular transmission shaft.

[0017] Further preferably, the tubular transmission shaft is fixedly connected with the power output shaft of the driving motor, or the tubular transmission shaft is part of the power output shaft of the driving motor, so that the driving motor can drive the tubular transmission shaft to rotate, and the tubular transmission shaft can further drive the friction disc to rotate, thereby realizing that the friction disc can rotate relative to the air guide disc.

[0018] Further preferably, the gas path communication structure further comprises a plurality of second flexible pipes, one end of each of the second flexible pipes is connected to a fourth gas passage hole of the connecting part of the tubular transmission shaft through a gas path joint, all of the second flexible pipes are arranged on the side of the connecting part of the tubular transmission shaft which is fixedly connected to the tubular body part, and the other end of each of the second flexible pipes passes through the window-shaped hole of the tubular body part into the internal cavity of the tubular body part and passes out from the end of the tubular body part which is away from the connecting part.

[0019] Further preferably, the gas path communication structure further comprises a pressing mechanism; the gas guide disc further comprises at least two lugs which are identical in structure and symmetrically arranged; the pressing mechanism comprises at least two pressure arms which are identical in structure and symmetrically arranged; the number of the pressure arms is the same as the number of the lugs of the gas guide disc of the gas path communication structure; each of the pressure arms is used to be connected to one of the lugs of the gas guide disc; all of the pressure arms are used to apply force to the gas guide disc of the gas path communication structure; and at any time point, the force applied by all of the pressure arms to the gas guide disc is equal, so that the gas guide disc extrudes the friction disc, thereby realizing the close contact between the gas guide disc and the friction disc.

[0020] Further preferably, the gas guide disc comprises first lugs and second lugs which are identical in structure and symmetrically arranged, and the pressing mechanism comprises first pressure arms and second pressure arms which are identical in structure and symmetrically arranged; the first pressure arms are connected to the first lugs, and the second pressure arms are connected to the second lugs.

[0021] Further preferably, the first pressure arms comprise first guide columns, first springs, first top covers, first fixed seats, and first bearings; and the second pressure arms comprise second guide columns, second springs, second top covers, second fixed seats, and second bearings.

[0022] Further preferably, the first guide columns and the second guide columns are in the shape of a cylinder; the first springs and the second springs are in the shape of a solenoid; the first bearings and the second bearings are in the shape of a ring; the first top covers and the second top covers are in the shape of a ring as a whole, the first top covers comprise first outer ring body parts and first inner ring body parts which are both in the shape of a ring, the first inner ring body parts are fixedly arranged in the center holes of the first outer ring body parts and located at one end of the first outer ring body parts, and the second top covers comprise second outer ring body parts and second inner ring body parts which are both in the shape of a ring, the second inner ring body parts are fixedly arranged in the center holes of the second outer ring body parts and located at one end of the second outer ring body parts.

[0023] Further preferably, a first stepped hole in a circular shape is arranged on the first lug, and a second stepped hole in a circular shape is arranged on the second lug; the first stepped hole is a through hole penetrating the thickness of the first lug, and a first step is arranged in the first stepped hole; the second stepped hole is a through hole penetrating the thickness of the second lug, and a second step is arranged in the second stepped hole; the first bearing is arranged in the part with a larger hole diameter in the first stepped hole of the first lug, one end of the first bearing abuts against the step in the first stepped hole, the step in the first stepped hole limits the first bearing, and the other end of the first bearing is flush with the side of the first lug away from the friction disc; the second bearing is arranged in the part with a larger hole diameter in the second stepped hole of the second lug, one end of the second bearing abuts against the step in the second stepped hole, the step in the second stepped hole limits the second bearing, and the other end of the second bearing is flush with the side of the second lug away from the friction disc.

[0024] Further preferably, one end of the first guide column is fixedly connected with the first fixed seat; the other end of the first guide column sequentially penetrates the central hole of the first top cover, the central hole of the first bearing, and the first stepped hole of the first lug; the first spring is sleeved outside the first guide column; one end of the first spring abuts against the end face of the first fixed seat facing the first guide column, the other end of the first spring penetrates into the central hole of the first outer ring body part of the first top cover and abuts against the first inner ring body part thereof, and the first spring is in a contracted state; the end face of the first top cover away from the first spring abuts against one end of the first bearing, and the first top cover supports and limits the first bearing; one end of the second guide column is fixedly connected with the second fixed seat; the other end of the second guide column sequentially penetrates the central hole of the second top cover, the central hole of the second bearing, and the second stepped hole of the second lug; the second spring is sleeved outside the second guide column; one end of the second spring abuts against the end face of the second fixed seat facing the second guide column, the other end of the second spring penetrates into the central hole of the second outer ring body part of the second top cover and abuts against the second inner ring body part thereof, and the second spring is in a contracted state; the end face of the second top cover away from the second spring abuts against one end of the second bearing, and the second top cover supports and limits the second bearing.

[0025] Further preferably, the first fixed seat and the second fixed seat are the same in structure.

[0026] Further preferably, the first fixing base comprises a first clamping part; the first clamping part is a ring structure composed of a plate body and having an opening, the closed end of the first clamping part is opposite to the position of the opening end thereof; a circular first clamping hole is arranged at the central position of the first clamping part, the first clamping hole is a through hole penetrating the thickness of the first clamping part; the opening end of the first clamping part is provided with a first slit penetrating the thickness of the first clamping part, and the first slit is in communication with the first clamping hole; a circular first threaded hole is arranged on the side wall of the first clamping part at the side of the first slit; a circular first counterbore is arranged on the side wall of the first clamping part at the other side of the first slit, a first shoulder is arranged in the first counterbore; the central axis of the first counterbore and the central axis of the first threaded hole are located on the same straight line, and the central axis of the first counterbore and the central axis of the first threaded hole are both perpendicular to the central axis of the first clamping hole; the second fixing base comprises a second clamping part; the second clamping part is a ring structure composed of a plate body and having an opening, the closed end of the second clamping part is opposite to the position of the opening end thereof; a circular second clamping hole is arranged at the central position of the second clamping part, the second clamping hole is a through hole penetrating the thickness of the second clamping part; the opening end of the second clamping part is provided with a third slit penetrating the thickness of the second clamping part, and the third slit is in communication with the second clamping hole; a circular second threaded hole is arranged on the side wall of the second clamping part at the side of the second slit; a circular second counterbore is arranged on the side wall of the second clamping part at the other side of the second slit, a second shoulder is arranged in the second counterbore; the central axis of the second counterbore and the central axis of the second threaded hole are located on the same straight line, and the central axis of the second counterbore and the central axis of the second threaded hole are both perpendicular to the central axis of the second clamping hole.

[0027] Further preferably, a first adjusting bolt is arranged in the first counterbore, the threaded shank of the first adjusting bolt is inserted into the first threaded hole after penetrating the smaller-diameter part of the first counterbore, and the first adjusting bolt is threadedly connected with the first threaded hole, the nut part of the first adjusting bolt is located at the larger-diameter part of the first counterbore, the width of the first slit can be adjusted by adjusting the first adjusting bolt, thereby realizing the size adjustment of the first clamping hole; a second adjusting bolt is arranged in the second counterbore, the threaded shank of the second adjusting bolt is inserted into the second threaded hole after penetrating the smaller-diameter part of the second counterbore, and the second adjusting bolt is threadedly connected with the second threaded hole, the nut part of the second adjusting bolt is located at the larger-diameter part of the second counterbore, the width of the second slit can be adjusted by adjusting the second adjusting bolt, thereby realizing the size adjustment of the first clamping hole.

[0028] Further preferably, one end of the first guide column is inserted into the first clamping hole of the first fixing base, and the first guide column is clamped in the first clamping hole by adjusting the first adjusting bolt, so as to realize the fixed connection of the first guide column and the first fixing base; one end of the second guide column is inserted into the second clamping hole of the second fixing base, and the second guide column is clamped in the second clamping hole by adjusting the second adjusting bolt, so as to realize the fixed connection of the second guide column and the second fixing base.

[0029] Further preferably, the first fixing base further comprises a first seat plate part fixedly connected with the first clamping part; the first seat plate part is in the shape of a plate body as a whole; the second fixing base further comprises a second seat plate part fixedly connected with the second clamping part; the second seat plate part is in the shape of a plate body as a whole; one side surface of the first clamping part is fixedly connected with one side surface of the first seat plate part and forms a laminated structure with the one side surface of the first seat plate part, and the connection between the first clamping part and the first seat plate part is located at the closed end of the first clamping part, and the rest of the side surface of the first clamping part is separated from the first seat plate part, so that a second gap is formed between the first clamping part and the first seat plate part; one side surface of the second clamping part is fixedly connected with one side surface of the second seat plate part and forms a laminated structure with the one side surface of the second seat plate part, and the connection between the second clamping part and the second seat plate part is located at the closed end of the second clamping part, and the rest of the side surface of the second clamping part is separated from the second seat plate part, so that a fourth gap is formed between the second clamping part and the second seat plate part.

[0030] Further preferably, both ends of the first seat plate part of the first fixing base are respectively provided with a first mounting hole and a second mounting hole, and the first seat plate part of the first fixing base is fixedly mounted relative to the ground through the first mounting hole and the second mounting hole, so as to realize the fixed mounting of the first fixing base relative to the ground; both ends of the second seat plate part of the second fixing base are respectively provided with a third mounting hole and a fourth mounting hole, and the second seat plate part of the second fixing base is fixedly mounted relative to the ground through the third mounting hole and the fourth mounting hole, so as to realize the fixed mounting of the second fixing base relative to the ground.

[0031] Any range described herein includes the end values and any intervening values and any sub-range consisting of any such values.

[0032] Unless otherwise specified, each raw material in the present application can be obtained by commercial purchase, and the equipment used in the present application can adopt conventional equipment in the field or refer to the existing technology in the field.

[0033] Compared with the prior art, the present application has the following beneficial effects:

[0034] (1) The gas path communication structure for the turret type die bonding device provided by the present application comprises a guide gas disc and a friction disc which are movably connected with each other, and the guide gas disc and the friction disc are both provided with air holes, one side surface of the guide gas disc abuts against one side surface of the friction disc and the two form a laminated structure, and the friction disc can rotate relative to the guide gas disc when the guide gas disc is stationary and the friction disc rotates around the central axis. In the process of the rotation of the friction disc relative to the guide gas disc, when the air hole of the friction disc rotates to the position of the air hole of the guide gas disc, the gas path communication between the friction disc and the guide gas disc can be realized, so that the flexible pipe can be prevented from being wound into a bundle along with the rotation of the friction disc.

[0035] (2) The gas path communication structure for the turret type die bonding device provided by the present application further comprises a tubular transmission shaft, the tubular transmission shaft is in the shape of a cylinder as a whole and is hollow inside, the tubular transmission shaft comprises a tubular body part and a connecting part, the connecting part is fixedly arranged at one end of the tubular body part, and a plurality of window-shaped holes are arranged on the tubular wall of the tubular body part close to the connecting part. One end of the second flexible pipe is communicated with the air hole of the connecting part of the tubular transmission shaft, and the other end of the second flexible pipe passes through the window-shaped hole of the tubular body part and enters the internal cavity of the tubular body part and then passes out from the end of the tubular body part away from the connecting part. The tubular transmission shaft is fixedly connected with the power output shaft of the driving motor, or the tubular transmission shaft is part of the power output shaft of the driving motor, so that the driving motor can drive the tubular transmission shaft to rotate, and the tubular transmission shaft can further drive the friction disc to rotate, so that the friction disc can rotate relative to the guide gas disc. In the process of the rotation of the friction disc relative to the guide gas disc, the gas path communication structure can prevent the second flexible pipe from being wound into a bundle along with the rotation of the friction disc.

[0036] (3) The gas path communication structure for the turret type die bonding device provided by the present application further comprises a pressing mechanism, which is used for applying force to the guide gas disc so that the guide gas disc extrudes the friction disc, thereby realizing the close contact between the guide gas disc and the friction disc and preventing air leakage between the two. The pressing mechanism comprises symmetrically arranged first and second pressure arms, and the first pressure arm is the same in structure as the second pressure arm. The first pressure arm comprises a first guide column, a first spring, a first top cover, a first fixed seat and a first bearing, and the second pressure arm comprises a second guide column, a second spring, a second top cover, a second fixed seat and a second bearing. Since the first spring is in a contracted state, the first spring applies elastic force to the first top cover along the extension direction of the first guide column, and the elastic force of the first spring is transmitted to the first lug of the guide gas disc via the first top cover and the first bearing in sequence, so that the guide gas disc extrudes the friction disc, thereby realizing the close contact between the guide gas disc and the friction disc and preventing air leakage between the two. The principle of the second pressure arm is the same as that of the first pressure arm, and will not be described here. BRIEF DESCRIPTION OF DRAWINGS

[0037] The specific embodiments of the present application will be further described in detail below with reference to the drawings

[0038] Fig. 1 is a perspective view of a gas path communication structure for a turret type die bonder according to an embodiment of the present application;

[0039] Fig. 2 is an exploded view of the gas path communication structure for the turret type die bonder according to an embodiment of the present application;

[0040] Fig. 3 is a perspective view of a gas guide disc of the gas path communication structure for the turret type die bonder according to an embodiment of the present application;

[0041] Fig. 4 is another perspective view of the gas guide disc of the gas path communication structure for the turret type die bonder according to an embodiment of the present application;

[0042] Fig. 5 is a perspective view of a friction disc of the gas path communication structure for the turret type die bonder according to an embodiment of the present application;

[0043] Fig. 6 is another perspective view of the friction disc of the gas path communication structure for the turret type die bonder according to an embodiment of the present application;

[0044] Fig. 7 is a sectional view of a tube type transmission shaft of the gas path communication structure for the turret type die bonder according to an embodiment of the present application;

[0045] Fig. 8 is a sectional view of a connection portion between the friction disc and the tube type transmission shaft of the gas path communication structure for the turret type die bonder according to an embodiment of the present application;

[0046] Fig. 9 is a perspective view of two pressure arm portions of a pressing mechanism of the gas path communication structure for the turret type die bonder according to an embodiment of the present application;

[0047] Fig. 10 is an exploded view of the two pressure arm portions of the pressing mechanism of the gas path communication structure for the turret type die bonder according to an embodiment of the present application;

[0048] Fig. 11 is a sectional view of the two pressure arm portions of the pressing mechanism of the gas path communication structure for the turret type die bonder according to an embodiment of the present application;

[0049] Fig. 12 is a perspective view of a top cover of a pressure arm of the pressing mechanism of the gas path communication structure for the turret type die bonder according to an embodiment of the present application;

[0050] Fig. 13 is a perspective view of a fixing seat of the pressure arm of the pressing mechanism of the gas path communication structure for the turret type die bonder according to an embodiment of the present application;

[0051] Fig. 14 is another perspective view of the fixing seat of the pressure arm of the pressing mechanism of the gas path communication structure for the turret type die bonder according to an embodiment of the present application;

[0052] Fig. 15 is a side view of a fixing seat of a pressure arm of a pressing mechanism of an air path communication structure for a turret-type die bonder according to an embodiment of the present application;

[0053] Fig. 16 is a sectional view of the fixing seat of the pressure arm of the pressing mechanism of the air path communication structure for the turret-type die bonder according to an embodiment of the present application (sectioned along the direction of line B-B shown in Fig. 15). DETAILED DESCRIPTION

[0054] In order to make the present application clearer, further description will be made in connection with preferred embodiments. Those skilled in the art should understand that the specific description below is illustrative rather than limiting, and the scope of the present application should not be limited thereto.

[0055] As shown in Figs. 1 and 2, the air path communication structure for the turret-type die bonder according to the present embodiment comprises a gas guide disc 10 and a friction disc 20.

[0056] As shown in Figs. 3 and 4, the gas guide disc 10 comprises a body portion 11, a first lug 12 and a second lug 13, and the body portion 11 is in the shape of a circular ring. A plurality of first air holes 16, for example, in the shape of a circle, are arranged on the body portion 11, and the center points of all the first air holes 16 are located on the same circular line. All the first air holes 16 are through holes penetrating the thickness of the body portion 11. In a preferred embodiment of the present embodiment, the first air holes 16 are uniformly distributed along the same circular line. Those skilled in the art should understand that the shape of the first air holes 16 can also be other shapes besides a circle, which will not be described here again.

[0057] In a preferred embodiment of the present embodiment, the gas guide disc 10 further comprises a first lug 12 and a second lug 13, which are fixedly arranged on the outer circumferential side of the body portion 11 and both protrude outward relative to the body portion 11, and the first lug 12 and the second lug 13 are symmetrically arranged (i.e. the first lug 12 and the second lug 13 are located on the same straight line passing through the center point of the body portion 11). The first lug 12 is provided with a circular first stepped hole 14, and the second lug 13 is provided with a circular second stepped hole 15; the first stepped hole 14 is a through hole penetrating the thickness of the first lug 12 and is provided with a first step inside, and the second stepped hole 15 is a through hole penetrating the thickness of the second lug 13 and is provided with a second step inside. In a preferred embodiment of the present embodiment, the first lug 12 is the same as the second lug 13. In addition, it is easy for those skilled in the art to understand that the number of the above-mentioned pressure arms included in the above-mentioned pressing mechanism is not limited to two (the first pressure arm 40 and the second pressure arm 50), and the number of pressure arms can be set according to actual needs, for example, three, four, five or six of the above-mentioned pressure arms can be set, and here will not be repeated.

[0058] In a preferred embodiment of the present embodiment, the above-mentioned gas path communication structure further comprises a plurality of first flexible pipes (not shown in the figure), one end of each first flexible pipe is connected to the first air hole 16 of the body portion 11 of the gas guide disc 10 through a gas path joint (not shown in the figure), and all the first flexible pipes are arranged on the same side of the gas guide disc 10, and the other end of each first flexible pipe is connected to the gas source (not shown in the figure) of the working gas. In the present embodiment, all the first flexible pipes are fixedly arranged on the side of the gas guide disc 10 close to the smaller diameter part of the first stepped hole 14 and the second stepped hole 15.

[0059] As shown in FIGS. 5 and 6, the friction disc 20 is in the shape of a disc body as a whole, and the friction disc 20 comprises a disc body part 21 and a ring-shaped protruding part 22. The disc body part 21 is in the shape of a disc body as a whole, and a circular center hole 23 is arranged at the center position of the disc body part 21; the ring-shaped protruding part 22 is in the shape of a ring body, and the ring-shaped protruding part 22 is fixedly arranged on one side of the disc body part 21 and forms a stacked structure with the disc body part 21, and the center axis of the ring-shaped protruding part 22 is located on the same straight line as the center axis of the disc body part 21 (i.e., the ring-shaped protruding part 22 is coaxial with the disc body part 21). The size of the ring-shaped protruding part 22 of the friction disc 20 matches the size of the body part 11 of the air guide disc 10. A plurality of third air holes 24, for example, circular third air holes 24 are arranged on the ring-shaped protruding part 22, the center points of all the third air holes 24 are located on the same circumferential line, and all the third air holes 24 are through holes penetrating the whole thickness of the ring-shaped protruding part 22 and the disc body part 21. In the embodiment, preferably, the third air holes 24 of the ring-shaped protruding part 22 of the friction disc 20 are uniformly distributed along the same circumferential line. A circular flange part 25 is fixedly arranged on the side of the disc body part 21 away from the ring-shaped protruding part 22 and around the center hole 23 of the disc body part 21, and the center axis of the flange part 25 is located on the same straight line as the center axis of the disc body part 21 (i.e., the flange part 25 is coaxial with the disc body part 21).

[0060] As shown in FIG. 2, the friction disc 20 is movably connected with the air guide disc 10; the side of the ring-shaped protruding part 22 of the friction disc 20 away from the disc body part 21 abuts against the side of the body part 11 of the air guide disc 10 close to the smaller-diameter part of the first stepped hole 14 and the second stepped hole 15, so that the side of the ring-shaped protruding part 22 of the friction disc 20 away from the disc body part 21 can close the first air hole 16 of the body part 11 of the air guide disc 10; the center axis of the ring-shaped protruding part 22 of the friction disc 20 is located on the same straight line as the center axis of the body part 11 of the air guide disc 10 (i.e., the ring-shaped protruding part 22 of the friction disc 20 is coaxial with the body part 11 of the air guide disc 10); when the air guide disc 10 is stationary and the friction disc 20 rotates around the center axis of the ring-shaped protruding part 22 of the friction disc 20 (i.e., the center axis of the body part 11 of the air guide disc 10), the side of the ring-shaped protruding part 22 of the friction disc 20 away from the disc body part 21 can rotate relative to the side of the body part 11 of the air guide disc 10 close to the smaller-diameter part of the first stepped hole 14 and the second stepped hole 15. In the process of the rotation of the friction disc 20 relative to the air guide disc 10, when the third air hole 24 of the ring-shaped protruding part 22 of the friction disc 20 rotates to the position of the first air hole 16 of the body part 11 of the air guide disc 10, the air passage communication between the friction disc 20 and the air guide disc 10 is realized.

[0061] In a preferred embodiment of the present embodiment, as shown in FIG. 1, FIG. 2 and FIG. 7, the above-mentioned gas passage structure further comprises a tubular transmission shaft 30. The tubular transmission shaft 30 is in the shape of a cylinder and hollow inside. The tubular transmission shaft 30 comprises a tubular body 31 and a connecting portion 32, the tubular body 31 is in the shape of a cylinder and hollow inside, the connecting portion 32 is in the shape of a ring, one end of the tubular body 31 is fixedly provided with the connecting portion 32, the central axis of the connecting portion 32 and the central axis of the tubular body 31 are on the same straight line, and the hole diameter of the central hole of the connecting portion 32 matches the inner diameter of the tubular body 31, so that the central hole of the connecting portion 32 and the internal cavity of the tubular body 31 are connected to form an integral cylindrical cavity. A plurality of window-shaped holes 33 are provided on the tubular wall of the tubular body 31 close to the connecting portion 32, and all the window-shaped holes 33 are through holes penetrating the thickness of the tubular wall. In the present embodiment, preferably, all the window-shaped holes 33 are of the same shape and size. Further preferably, each window-shaped hole 33 is distributed in a ring around the tubular wall of the tubular body 31 and uniformly distributed. A plurality of fourth air holes 32a, for example, circular, are provided on the connecting portion 32 of the tubular transmission shaft 30, the center points of all the fourth air holes 32a are on the same circumferential line, and all the fourth air holes 32a are through holes penetrating the thickness of the connecting portion 32. In the present embodiment, preferably, each fourth air hole 32a of the connecting portion 32 of the tubular transmission shaft 30 is uniformly distributed along the same circumferential line.

[0062] As shown in FIG. 8, the side of the friction disc 20 away from the annular protruding portion 22 is fixedly connected with the connecting portion 32 of the tubular transmission shaft 30, the size of the connecting portion 32 of the tubular transmission shaft 30 matches the size of the disc body 21 of the friction disc 20, the diameter of the circumferential line on which the center points of the fourth air holes 32a of the connecting portion 32 of the tubular transmission shaft 30 are located is equal to the diameter of the circumferential line on which the center points of the third air holes 24 of the annular protruding portion 22 of the friction disc 20 are located, and the circumferential distance between any two adjacent fourth air holes 32a is equal to the circumferential distance between any two adjacent third air holes 24, so that each fourth air hole 32a is connected with a third air hole 24; the flange portion 25 of the disc body 21 of the friction disc 20 is inserted into the central hole of the connecting portion 32 of the tubular transmission shaft 30, and the inner wall of the connecting portion 32 of the tubular transmission shaft 30 abuts against the outer wall of the flange portion 25 of the disc body 21 of the friction disc 20, and the flange portion 25 of the disc body 21 of the friction disc 20 limits the connecting portion 32 of the tubular transmission shaft 30.

[0063] In the embodiment, the tubular transmission shaft 30 is fixedly connected with a power output shaft of a driving motor (not shown in the figure) or is a part of the power output shaft of the driving motor (not shown in the figure), so that the driving motor can drive the tubular transmission shaft 30 to rotate, and the tubular transmission shaft 30 can further drive the friction disc 20 to rotate, thereby realizing that the friction disc 20 can rotate relative to the air guide disc 10 (specifically, a side of the annular protruding portion 22 of the friction disc 20 away from the disc body portion 21 can rotate relative to a side of the body portion 11 of the air guide disc 10 provided with the waist-shaped groove 16).

[0064] In a preferred embodiment of the embodiment, the air path communication structure further comprises a plurality of second flexible tubes (not shown in the figure), one end of each of the second flexible tubes is connected in communication with one fourth air passage hole 32a of the connecting portion 32 of the tubular transmission shaft 30 through an air path joint (not shown in the figure), all the second flexible tubes are arranged on the side of the connecting portion 32 of the tubular transmission shaft 30 fixedly connected with the tubular body portion 31, the other end of each of the second flexible tubes passes through the window-shaped hole 33 of the tubular body portion 31 into the internal cavity of the tubular body portion 31 and passes out from the end of the tubular body portion 31 away from the connecting portion 32 (not shown in the figure), the second flexible tube passing out from the internal cavity of the tubular body portion 31 is connected with a bonding head and is connected in communication with a suction nozzle of the bonding head (not shown in the figure), so as to transport working gas to the suction nozzle. In a preferred embodiment of the embodiment, the end of the tubular transmission shaft 30 away from the friction disc 20 is used to drive the bonding head to rotate, and during the process that the tubular transmission shaft 30 drives the bonding head to rotate, the second flexible tube connected with the bonding head will not be wound into a bundle due to the rotation of the bonding head.

[0065] In use, the air guide disc 10 is stationary relative to the ground, and the friction disc 20 rotates relative to the air guide disc 10 under the drive of the tubular transmission shaft 30. When the friction disc 20 rotates to a position where the third air passage hole 24 is opposite to the first air passage hole 16 of the body portion 11 of the air guide disc 10, the third air passage hole 24 can be connected in communication with the first air passage hole 16 of the body portion 11 of the air guide disc 10. In this case, the pressurized gas from the gas source can flow into the second flexible tube through the first flexible tube, the first air passage hole 16 of the body portion 11 of the air guide disc 10, the third air passage hole 24 of the friction disc 20, and the fourth air passage hole 32a of the connecting portion 32 of the tubular transmission shaft 30 in sequence.

[0066] In a preferred embodiment of the embodiment, as shown in FIGS. 9, 10, 11 and 12, in order to realize that the air guide disc 10 can be in close contact with the friction disc 20 and prevent gas leakage due to a gap between the two, the air path communication structure further comprises a pressing mechanism for applying a force to the air guide disc 10, so that the air guide disc 10 presses the friction disc 20, thereby realizing that the air guide disc 10 is in close contact with the friction disc 20 and preventing gas leakage due to a gap between the two.

[0067] In the embodiment, the pressing mechanism comprises a first pressing arm 40 and a second pressing arm 50 which are symmetrically arranged, and the first pressing arm 40 and the second pressing arm 50 are of the same structure; wherein the first pressing arm 40 comprises a first guide column 41, a first spring 42, a first top cover 43, a first fixed seat 44, and a first bearing 45, and the second pressing arm 50 comprises a second guide column 51, a second spring 52, a second top cover 53, a second fixed seat 54, and a second bearing 55. The first guide column 41 and the second guide column 51 are both in the shape of a cylinder; the first spring 42 and the second spring 52 are both in the shape of a solenoid; the first bearing 45 and the second bearing 55 are both in the shape of a ring; the first top cover 43 and the second top cover 53 are both in the shape of a ring as a whole, the first top cover 43 comprises a first outer ring body part 43a and a first inner ring body part 43b which are both in the shape of a ring, the first inner ring body part 43b is fixedly arranged in the central hole of the first outer ring body part 43a and located at one end of the first outer ring body part 43a, and the second top cover 53 comprises a second outer ring body part 53a and a second inner ring body part 53b which are both in the shape of a ring, the second inner ring body part 53b is fixedly arranged in the central hole of the second outer ring body part 53a and located at one end of the second outer ring body part 53a.

[0068] The first bearing 45 is arranged in the part with larger hole diameter of the first stepped hole 14 of the first lug 12, one end (the upper end shown in FIG. 11) of the first bearing 45 abuts against the step in the first stepped hole 14, the step in the first stepped hole 14 limits the first bearing 45, and the other end (the lower end shown in FIG. 11) of the first bearing 45 is flush with the side of the first lug 12 away from the friction disc 20; the second bearing 55 is arranged in the part with larger hole diameter of the second stepped hole 15 of the second lug 13, one end (the upper end shown in FIG. 11) of the second bearing 55 abuts against the step in the second stepped hole 15, the step in the second stepped hole 15 limits the second bearing 55, and the other end (the lower end shown in FIG. 11) of the second bearing 55 is flush with the side of the second lug 13 away from the friction disc 20.

[0069] One end (lower end shown in FIG. 11) of the first guide column 41 is fixedly connected with the first fixed seat 44; the other end (upper end shown in FIG. 11) of the first guide column 41 successively passes through the central hole of the first top cover 43, the central hole of the first bearing 45, and the first stepped hole 14 of the first lug 12; the first spring 42 is sleeved outside the first guide column 41; one end of the first spring 42 abuts against the end face of the first fixed seat 44 facing the first guide column 41, the other end of the first spring 42 passes into the central hole of the first outer ring body part 43a of the first top cover 43 and abuts against the first inner ring body part 43b thereof, and the first spring 42 is in a contracted state; the end face of the first top cover 43 away from the first spring 42 abuts against one end of the first bearing 45 away from the friction disc 20, and the first top cover 43 supports and limits the first bearing 45. Similarly, one end (lower end shown in FIG. 11) of the second guide column 51 is fixedly connected with the second fixed seat 54; the other end (upper end shown in FIG. 11) of the second guide column 51 successively passes through the central hole of the second top cover 53, the central hole of the second bearing 55, and the second stepped hole 15 of the second lug 13; the second spring 52 is sleeved outside the second guide column 51; one end of the second spring 52 abuts against the end face of the second fixed seat 54 facing the second guide column 51, the other end of the second spring 52 passes into the central hole of the second outer ring body part 53a of the second top cover 53 and abuts against the second inner ring body part 53b thereof, and the second spring 52 is in a contracted state; the end face of the second top cover 53 away from the second spring 52 abuts against one end of the second bearing 55 away from the friction disc 20, and the second top cover 53 supports and limits the second bearing 55.

[0070] It should be noted that, as shown in FIG. 11, since the first spring 42 is in a contracted state, the first spring 42 exerts an elastic force on the first top cover 43 along the extension direction of the first guide column 41, and the elastic force of the first spring 42 is transmitted to the first lug 12 of the air guide disc 10 successively via the first top cover 43 and the first bearing 45, so that the air guide disc 10 presses the friction disc 20, thereby realizing the close contact between the air guide disc 10 and the friction disc 20 and preventing air leakage due to the gap therebetween. Similarly, since the second spring 52 is in a contracted state, the second spring 52 exerts an elastic force on the second top cover 53 along the extension direction of the second guide column 51, and the elastic force of the second spring 52 is transmitted to the second lug 13 of the air guide disc 10 successively via the second top cover 53 and the second bearing 55, so that the air guide disc 10 presses the friction disc 20, thereby realizing the close contact between the air guide disc 10 and the friction disc 20 and preventing air leakage due to the gap therebetween.

[0071] In a preferred embodiment of the present embodiment, as shown in FIGS. 13, 14, 15 and 16, the first fixing seat 44 comprises a first clamping portion 44a and a first seat plate portion 44b fixedly connected with each other; the first seat plate portion 44b has a plate body shape as a whole; the first clamping portion 44a has a ring shape with an opening and is formed by a plate body; the closed end of the first clamping portion 44a is opposite to the opening end thereof; a first clamping hole 44c, for example, a circular hole, is arranged at the central position of the first clamping portion 44a and penetrates the thickness of the first clamping portion 44a; a first slit 44d, which penetrates the thickness of the first clamping portion 44a, is arranged at the opening end of the first clamping portion 44a and is in communication with the first clamping hole 44c; a first threaded hole 44e, which is circular, is arranged on the side wall of the first clamping portion 44a at one side of the first slit 44d; a first counterbore 44f, which is circular, is arranged on the side wall of the first clamping portion 44a at the other side of the first slit 44d, and a first shoulder portion 44g is arranged in the first counterbore 44f; the central axis of the first counterbore 44f and the central axis of the first threaded hole 44e are located on the same straight line (i.e., the first counterbore 44f is coaxial with the first threaded hole 44e), and both the central axis of the first counterbore 44f and the central axis of the first threaded hole 44e are perpendicular to the central axis of the first clamping hole 44c; a first adjusting bolt (not shown in the figure) is arranged in the first counterbore 44f, the shank portion of the first adjusting bolt is inserted into the first threaded hole 44e after penetrating the smaller-diameter part of the first counterbore 44f, the first adjusting bolt is threadedly connected with the first threaded hole 44e, the nut portion of the first adjusting bolt is located at the larger-diameter part of the first counterbore 44f, and the width of the first slit 44d can be adjusted by adjusting the first adjusting bolt, thereby realizing the size adjustment of the first clamping hole 44c. One side surface of the first clamping portion 44a is fixedly connected with one side surface of the first seat plate portion 44b and forms a laminated structure, the connection between the first clamping portion 44a and the first seat plate portion 44b is located at the closed end of the first clamping portion 44a, and the rest of the side surface of the first clamping portion 44a is separated from the first seat plate portion 44b, so that a second slit 44h is formed between the first clamping portion 44a and the first seat plate portion 44b. It is easy for those skilled in the art to understand that the second slit 44h is used to ensure that the width of the first slit 44d can be adjusted by adjusting the first adjusting bolt, in other words, the second slit 44h is a prerequisite for realizing that the width of the first slit 44d can be adjusted by the first adjusting bolt.

[0072] In a preferred embodiment of the present embodiment, the second fixing seat 54 is identical in structure to the first fixing seat 44. As shown in FIGS. 13, 14, 15 and 16, the second fixing seat 54 comprises a second clamping portion 54a and a second seat plate portion 54b fixedly connected with each other; the second seat plate portion 54b is in the shape of a plate as a whole; the second clamping portion 54a is in the shape of a ring with an opening and is composed of a plate, the closed end of the second clamping portion 54a is opposite to the opening end thereof; a second clamping hole 54c, for example, in the shape of a circle, is arranged at the center of the second clamping portion 54a, the second clamping hole 54c is a through hole penetrating the thickness of the second clamping portion 54a; a third slit 54d penetrating the thickness of the second clamping portion 54a is arranged at the opening end of the second clamping portion 54a, and the third slit 54d is in communication with the second clamping hole 54c; a second threaded hole 54e in the shape of a circle is arranged on the side wall of the second clamping portion 54a at one side of the second slit 54d; a second counterbore 54f in the shape of a circle is arranged on the side wall of the second clamping portion 54a at the other side of the second slit 54d, a second shoulder 54g is arranged in the second counterbore 54f; the center axis of the second counterbore 54f and the center axis of the second threaded hole 54e are located on the same straight line (i.e., the second counterbore 54f is coaxial with the second threaded hole 54e), and both the center axis of the second counterbore 54f and the center axis of the second threaded hole 54e are perpendicular to the center axis of the second clamping hole 54c; a second adjusting bolt (not shown in the drawings) is arranged in the second counterbore 54f, the threaded shank of the second adjusting bolt is inserted into the second threaded hole 54e after penetrating the part of the second counterbore 54f with smaller hole diameter, and the second adjusting bolt is threadedly connected with the second threaded hole 54e, the threaded nut of the second adjusting bolt is located at the part of the second counterbore 54f with larger hole diameter, and the width of the second slit 54d can be adjusted by adjusting the second adjusting bolt, thereby realizing the size adjustment of the first clamping hole 44c. One side surface of the second clamping portion 54a is fixedly connected with one side surface of the second seat plate portion 54b and the two form a laminated structure, the connection between the second clamping portion 54a and the second seat plate portion 54b is located at the closed end of the second clamping portion 54a, the rest of the side surface of the second clamping portion 54a is separated from the second seat plate portion 54b, so that a fourth slit 54h is formed between the second clamping portion 54a and the second seat plate portion 54b. Those skilled in the art can easily understand that the fourth slit 54h is used to ensure that the width of the third slit 54d can be adjusted by adjusting the second adjusting bolt, in other words, the fourth slit 54h is a prerequisite for realizing that the width of the third slit 54d can be adjusted by the second adjusting bolt.

[0073] In a further preferred embodiment of the present embodiment, the second fixing seat 54 is identical to the first fixing seat 44.

[0074] The first seat plate part 44b of the first fixing seat 44 is provided with a first mounting hole 44i and a second mounting hole 44j at two ends respectively, and the first seat plate part 44b of the first fixing seat 44 is fixedly installed relative to the ground through the first mounting hole 44i and the second mounting hole 44j, and then the first fixing seat 44 is fixedly installed relative to the ground. The second seat plate part 54b of the second fixing seat 54 is provided with a third mounting hole 54i and a fourth mounting hole 54j at two ends respectively, and the second seat plate part 54b of the second fixing seat 54 is fixedly installed relative to the ground through the third mounting hole 54i and the fourth mounting hole 54j, and then the second fixing seat 54 is fixedly installed relative to the ground.

[0075] In a preferred embodiment of the present embodiment, as shown in FIGS. 9, 10 and 11, one end (the lower end shown in FIG. 11) of the first guide column 41 is inserted into the first clamping hole 44c of the first fixing seat 44, and the first guide column 41 is clamped in the first clamping hole 44c by adjusting the first adjusting bolt, so as to realize the fixed connection between the first guide column 41 and the first fixing seat 44. Similarly, one end (the lower end shown in FIG. 11) of the second guide column 51 is inserted into the second clamping hole 54c of the second fixing seat 54, and the second guide column 51 is clamped in the second clamping hole 54c by adjusting the second adjusting bolt, so as to realize the fixed connection between the second guide column 51 and the second fixing seat 54.

[0076] In addition, those skilled in the art can easily understand that the number of the above-mentioned pressure arms included in the above-mentioned pressing mechanism is not limited to 2 (the first pressure arm 40 and the second pressure arm 50), and the number of the pressure arms can be set according to actual needs, for example, 3, 4, 5 or 6 above-mentioned pressure arms can be set, and here will not be repeated.

[0077] Obviously, the above-mentioned embodiments of the present application are only examples for clearly illustrating the present application, and are not a limitation on the embodiments of the present application. Based on the above-mentioned description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments cannot be exhausted. Any obvious changes or variations derived from the technical solutions of the present application still fall within the protection scope of the present application.

Claims

1. An air path communication structure for a turntable type die bonding apparatus, characterized by comprising: The air path communication structure comprises a guide air disc (10) and a friction disc (20); The guide air disc (10) comprises a body part (11) in the shape of a circular ring body; a plurality of first air holes (16) are arranged on the body part (11), and the center points of all the first air holes (16) are located on the same circumferential line; all the first air holes (16) are through holes penetrating the thickness of the body part (11); The friction disc (20) is in the shape of a disc body as a whole, and comprises a disc body part (21) and a ring-shaped protruding part (22); the disc body part (21) is in the shape of a disc body as a whole, and a circular center hole (23) is arranged at the center position of the disc body part (21); the ring-shaped protruding part (22) is in the shape of a circular ring body, is fixedly arranged on one side surface of the disc body part (21) and forms a laminated structure with the disc body part (21), and the center axis of the ring-shaped protruding part (22) and the center axis of the disc body part (21) are located on the same straight line; the ring-shaped protruding part (22) of the friction disc (20) is matched in size with the body part (11) of the guide air disc (10); a plurality of third air holes (24) are arranged on the ring-shaped protruding part (22), the center points of all the third air holes (24) are located on the same circumferential line, and all the third air holes (24) are through holes penetrating the overall thickness of the ring-shaped protruding part (22) and the disc body part (21); The friction disc (20) is movably connected with the guide air disc (10); one side surface of the ring-shaped protruding part (22) of the friction disc (20) away from the disc body part (21) abuts against one side surface of the body part (11) of the guide air disc (10), so that the one side surface of the ring-shaped protruding part (22) of the friction disc (20) away from the disc body part (21) can close the first air holes (16) of the body part (11) of the guide air disc (10); the center axis of the ring-shaped protruding part (22) of the friction disc (20) and the center axis of the body part (11) of the guide air disc (10) are located on the same straight line; when the guide air disc (10) is stationary and the friction disc (20) rotates around the center axis of the ring-shaped protruding part (22) thereof, the one side surface of the ring-shaped protruding part (22) of the friction disc (20) away from the disc body part (21) can rotate relative to the one side surface of the body part (11) of the guide air disc (10).

2. The gas path communication structure for a turntable-type die bonder according to claim 1, wherein The first air holes (16) are uniformly distributed along the same circumferential line.

3. The gas path communication structure for a turntable-type die bonder according to claim 1, wherein The third air holes (24) are uniformly distributed along the same circumferential line.

4. The gas passage communication structure for a turntable-type die bonder according to claim 1, wherein The air path communication structure further comprises a plurality of first flexible pipes; one end of each first flexible pipe is connected in communication with the first air holes (16) of the body part (11) of the guide air disc (10) by means of an air path joint, and all the first flexible pipes are fixedly arranged on the same side surface of the guide air disc (10); the other end of each first flexible pipe is connected in communication with the gas source of the working gas.

5. The gas passage communication structure for a turntable-type die bonder according to claim 1, wherein The gas path communication structure further comprises a tubular transmission shaft (30); the tubular transmission shaft (30) is in the shape of a cylinder and hollow inside; the tubular transmission shaft (30) comprises a tubular body (31) and a connecting part (32), the tubular body (31) is in the shape of a cylinder and hollow inside, and the connecting part (32) is in the shape of a ring; one end of the tubular body (31) is fixedly provided with the connecting part (32); the central axis of the connecting part (32) and the central axis of the tubular body (31) are located on the same straight line, and the hole diameter of the central hole of the connecting part (32) matches the inner diameter of the tubular body (31), so that the central hole of the connecting part (32) and the internal cavity of the tubular body (31) are communicated to form an integral cylindrical cavity; the connecting part (32) of the tubular transmission shaft (30) is provided with a plurality of fourth air holes (32a), the central points of all the fourth air holes (32a) are located on the same circumferential line, and all the fourth air holes (32a) are through holes penetrating the thickness of the connecting part (32); a plurality of window-shaped holes (33) are arranged on the tubular wall of the tubular body (31) close to the connecting part (32), and all the window-shaped holes (33) are through holes penetrating the thickness of the tubular wall of the tubular body (31).

6. The gas passage communication structure for a turntable-type die bonder according to claim 5, wherein All the window-shaped holes (33) are of the same shape and size.

7. The gas passage communication structure for a rotary table type die bonding apparatus according to claim 5, wherein Each window-shaped hole (33) is distributed in a ring around the tubular wall of the tubular body (31) and is uniformly distributed.

8. The gas passage communication structure for the turntable-type die bonder according to claim 5, wherein Each fourth air hole (32a) is uniformly distributed along the same circumferential line.

9. The gas passage communication structure for the turntable-type die bonder according to claim 5, wherein The side of the friction disc (20) away from the annular protruding part (22) is fixedly connected with the connecting part (32) of the tubular transmission shaft (30), the size of the connecting part (32) of the tubular transmission shaft (30) matches the size of the disc body (21) of the friction disc (20), the diameter of the circumferential line on which the central points of the fourth air holes (32a) of the connecting part (32) of the tubular transmission shaft (30) are located is equal to the diameter of the circumferential line on which the central points of the third air holes (24) of the annular protruding part (22) of the friction disc (20) are located, and the circumferential distance between any two adjacent fourth air holes (32a) is equal to the circumferential distance between any two adjacent third air holes (24), so that each fourth air hole (32a) is communicated with a third air hole (24).

10. The gas passage communication structure for a turntable-type die bonder according to claim 9, wherein A circular flange part (25) is fixedly arranged on the side of the disc body (21) of the friction disc (20) away from the annular protruding part (22) and around the central hole (23) of the disc body (21), and the central axis of the flange part (25) is located on the same straight line as the central axis of the disc body (21); the flange part (25) of the disc body (21) of the friction disc (20) is inserted into the central hole of the connecting part (32) of the tubular transmission shaft (30), and the inner wall of the connecting part (32) of the tubular transmission shaft (30) abuts against the outer wall of the flange part (25) of the disc body (21) of the friction disc (20), and the flange part (25) of the disc body (21) of the friction disc (20) limits the connecting part (32) of the tubular transmission shaft (30).

11. The gas passage communication structure for a turntable-type die bonder according to any one of claims 5, wherein The tubular transmission shaft (30) is fixedly connected with a power output shaft of the driving motor, or the tubular transmission shaft (30) is part of the power output shaft of the driving motor, so that the driving motor can drive the tubular transmission shaft (30) to rotate, and the tubular transmission shaft (30) can further drive the friction disc (20) to rotate, thereby realizing that the friction disc (20) can rotate relative to the air guide disc (10).

12. The gas passage communication structure for a turntable-type die bonder according to claim 5, wherein The air path communication structure further comprises a plurality of second flexible pipes, one end of each of the second flexible pipes is connected in communication with a fourth air hole (32a) of the connecting portion (32) of the tubular transmission shaft (30), all of the second flexible pipes are arranged on a side of the connecting portion (32) of the tubular transmission shaft (30) which is fixedly connected with the tubular body portion (31), and the other end of each of the second flexible pipes penetrates through the window-shaped hole (33) of the tubular body portion (31) into the internal cavity of the tubular body portion (31) and penetrates out from the end of the tubular body portion (31) which is away from the connecting portion (32).

13. The gas passage communication structure for a turntable-type die bonder according to any one of claims 1 to 12, wherein The air path communication structure further comprises a pressing mechanism; the air guide disc (10) further comprises at least two lugs which are the same in structure and symmetrically arranged; the pressing mechanism comprises at least two pressure arms which are the same in structure and symmetrically arranged; the number of the pressure arms is the same as the number of the lugs of the air guide disc (10) of the air path communication structure; each of the pressure arms is used to be connected with one of the lugs of the air guide disc (10); all of the pressure arms are used to apply force to the air guide disc (10) of the air path communication structure; and at any time point, the forces applied by all of the pressure arms to the air guide disc (10) are equal, so that the air guide disc (10) presses the friction disc (20), thereby realizing that the air guide disc (10) is in close contact with the friction disc (20).

14. The gas passage communication structure for a turntable-type die bonder according to claim 13, wherein The air guide disc (10) comprises a first lug (12) and a second lug (13) which are the same in structure and symmetrically arranged, and the pressing mechanism comprises a first pressure arm (40) and a second pressure arm (50) which are the same in structure and symmetrically arranged; the first pressure arm (40) is connected with the first lug (12), and the second pressure arm (50) is connected with the second lug (13).

15. The gas passage communication structure for the turntable-type die bonder according to claim 14, wherein The first pressure arm (40) comprises a first guide column (41), a first spring (42), a first top cover (43), a first fixed seat (44), and a first bearing (45); and the second pressure arm (50) comprises a second guide column (51), a second spring (52), a second top cover (53), a second fixed seat (54), and a second bearing (55).

16. The gas passage communication structure for a turntable-type die bonder according to claim 15, wherein The first guide column (41) and the second guide column (51) are both in the shape of a cylinder; the first spring (42) and the second spring (52) are both in the shape of a solenoid; the first bearing (45) and the second bearing (55) are both in the shape of a circular ring; the first top cover (43) and the second top cover (53) are both in the shape of a circular ring as a whole, the first top cover (43) comprises a first outer ring body part (43a) and a first inner ring body part (43b) and both are circular rings, the first inner ring body part (43b) is fixedly arranged in the central hole of the first outer ring body part (43a) and is located at one end of the first outer ring body part (43a), the second top cover (53) comprises a second outer ring body part (53a) and a second inner ring body part (53b) and both are circular rings, the second inner ring body part (53b) is fixedly arranged in the central hole of the second outer ring body part (53a) and is located at one end of the second outer ring body part (53a).

17. The gas passage communication structure for a turntable-type die bonder according to claim 16, wherein The first lug (12) is provided with a circular first stepped hole (14), and the second lug (13) is provided with a circular second stepped hole (15); the first stepped hole (14) is a through hole penetrating the thickness of the first lug (12) and a first step is arranged in the first stepped hole (14), and the second stepped hole (15) is a through hole penetrating the thickness of the second lug (13) and a second step is arranged in the second stepped hole (15); The first bearing (45) is arranged in the part with a larger hole diameter in the first stepped hole (14) of the first lug (12), one end of the first bearing (45) abuts against the step in the first stepped hole (14), the step in the first stepped hole (14) limits the first bearing (45), and the other end of the first bearing (45) is flush with the side of the first lug (12) away from the friction disc (20); the second bearing (55) is arranged in the part with a larger hole diameter in the second stepped hole (15) of the second lug (13), one end of the second bearing (55) abuts against the step in the second stepped hole (15), the step in the second stepped hole (15) limits the second bearing (55), and the other end of the second bearing (55) is flush with the side of the second lug (13) away from the friction disc (20).

18. The gas passage communication structure for the turntable-type die bonder according to claim 17, wherein One end of the first guide column (41) is fixedly connected with the first fixed seat (44); the other end of the first guide column (41) sequentially penetrates the central hole of the first top cover (43), the central hole of the first bearing (45), and the first stepped hole (14) of the first lug (12); the first spring (42) is sleeved on the outside of the first guide column (41); one end of the first spring (42) abuts against the end face of the first fixed seat (44) facing the first guide column (41), the other end of the first spring (42) penetrates into the central hole of the first outer ring body part (43a) of the first top cover (43) and abuts against the first inner ring body part (43b) thereof, and the first spring (42) is in a contracted state; the end face of the first top cover (43) away from the first spring (42) abuts against one end of the first bearing (45), and the first top cover (43) supports and limits the first bearing (45); One end of the second guide column (51) is fixedly connected with the second fixed seat (54); the other end of the second guide column (51) passes through the center hole of the second top cover (53), the center hole of the second bearing (55) and the second stepped hole (15) of the second lug (13) in sequence; the second spring (52) is sleeved outside the second guide column (51); one end of the second spring (52) abuts against the end face of the second fixed seat (54) facing the second guide column (51), the other end of the second spring (52) penetrates into the center hole of the second outer ring body part (53a) of the second top cover (53) and abuts against the second inner ring body part (53b) thereof, and the second spring (52) is in a contracted state; the end face of the second top cover (53) away from the second spring (52) abuts against one end of the second bearing (55), and the second top cover (53) supports and limits the second bearing (55).

19. The gas passage communication structure for the turntable-type die bonder according to claim 18, wherein The first fixed seat (44) and the second fixed seat (54) are the same in structure.

20. The gas passage communication structure for the turntable-type die bonder according to claim 19, wherein The first fixed seat (44) comprises a first clamping hoop part (44a); the first clamping hoop part (44a) is of an annular structure formed by a plate body and having an opening, and the closed end of the first clamping hoop part (44a) is opposite to the position of the opening end thereof; a circular first clamping hole (44c) is arranged at the central position of the first clamping hoop part (44a), and the first clamping hole (44c) is a through hole penetrating the thickness of the first clamping hoop part (44a); the opening end of the first clamping hoop part (44a) is provided with a first slit (44d) penetrating the thickness of the first clamping hoop part (44a), and the first slit (44d) is in communication with the first clamping hole (44c); a circular first threaded hole (44e) is arranged on the side wall of the first clamping hoop part (44a) on the side of the first slit (44d); a circular first counterbore (44f) is arranged on the side wall of the first clamping hoop part (44a) on the other side of the first slit (44d), and a first shoulder part (44g) is arranged in the first counterbore (44f); the central axis of the first counterbore (44f) and the central axis of the first threaded hole (44e) are located on the same straight line, and the central axis of the first counterbore (44f) and the central axis of the first threaded hole (44e) are both perpendicular to the central axis of the first clamping hole (44c); The second fixing base (54) comprises a second clamping part (54a); the second clamping part (54a) is of a ring structure formed by a plate body and having an opening, and the closed end of the second clamping part (54a) is opposite to the position of the opening end thereof; a circular second clamping hole (54c) is arranged at the central position of the second clamping part (54a), and the second clamping hole (54c) is a through hole penetrating the thickness of the second clamping part (54a); the opening end of the second clamping part (54a) is provided with a third slit (54d) penetrating the thickness of the second clamping part (54a), and the third slit (54d) is in communication with the second clamping hole (54c); a circular second threaded hole (54e) is arranged on the side wall of the second clamping part (54a) on one side of the second slit (54d); a circular second counterbore (54f) is arranged on the side wall of the second clamping part (54a) on the other side of the second slit (54d), and a second shoulder (54g) is arranged in the second counterbore (54f); the central axis of the second counterbore (54f) and the central axis of the second threaded hole (54e) are located on the same straight line, and the central axis of the second counterbore (54f) and the central axis of the second threaded hole (54e) are both perpendicular to the central axis of the second clamping hole (54c).

21. The gas passage communication structure for the turntable-type die bonder according to claim 20, wherein The first counterbore (44f) is provided with a first adjusting bolt, the screw rod of the first adjusting bolt is inserted into the first threaded hole (44e) after penetrating the part with smaller hole diameter of the first counterbore (44f), and the first adjusting bolt is threadedly connected with the first threaded hole (44e), the nut part of the first adjusting bolt is located at the part with larger hole diameter of the first counterbore (44f), and the width of the first slit (44d) can be adjusted by adjusting the first adjusting bolt, so as to realize the size adjustment of the first clamping hole (44c); The second counterbore (54f) is provided with a second adjusting bolt, the screw rod of the second adjusting bolt is inserted into the second threaded hole (54e) after penetrating the part with smaller hole diameter of the second counterbore (54f), and the second adjusting bolt is threadedly connected with the second threaded hole (54e), the nut part of the second adjusting bolt is located at the part with larger hole diameter of the second counterbore (54f), and the width of the second slit (54d) can be adjusted by adjusting the second adjusting bolt, so as to realize the size adjustment of the first clamping hole (44c).

22. The gas passage communication structure for the turntable-type die bonder according to claim 21, wherein One end of the first guide column (41) is inserted into the first clamping hole (44c) of the first fixing base (44), and the first guide column (41) is clamped in the first clamping hole (44c) by adjusting the first adjusting bolt, so as to realize the fixed connection of the first guide column (41) and the first fixing base (44); one end of the second guide column (51) is inserted into the second clamping hole (54c) of the second fixing base (54), and the second guide column (51) is clamped in the second clamping hole (54c) by adjusting the second adjusting bolt, so as to realize the fixed connection of the second guide column (51) and the second fixing base (54).

23. The gas passage communication structure for the turntable-type die bonder according to claim 22, wherein The first fixing seat (44) further comprises a first seat plate portion (44b) fixedly connected with the first clamping portion (44a); the first seat plate portion (44b) is in the shape of a plate body as a whole; the second fixing seat (54) further comprises a second seat plate portion (54b) fixedly connected with the second clamping portion (54a); the second seat plate portion (54b) is in the shape of a plate body as a whole; One side surface of the first clamping portion (44a) is fixedly connected with one side surface of the first seat plate portion (44b) and forms a laminated structure with the same; the connection between the first clamping portion (44a) and the first seat plate portion (44b) is located at the closed end of the first clamping portion (44a); the rest of the side surface of the first clamping portion (44a) is separated from the first seat plate portion (44b), so that a second gap (44h) is formed between the first clamping portion (44a) and the first seat plate portion (44b); One side surface of the second clamping portion (54a) is fixedly connected with one side surface of the second seat plate portion (54b) and forms a laminated structure with the same; the connection between the second clamping portion (54a) and the second seat plate portion (54b) is located at the closed end of the second clamping portion (54a); the rest of the side surface of the second clamping portion (54a) is separated from the second seat plate portion (54b), so that a fourth gap (54h) is formed between the second clamping portion (54a) and the second seat plate portion (54b).

24. The pressing mechanism of the gas passage communication structure for the turntable type die bonder according to claim 23, wherein Both ends of the first seat plate portion (44b) of the first fixing seat (44) are respectively provided with a first mounting hole (44i) and a second mounting hole (44j); the first seat plate portion (44b) of the first fixing seat (44) is fixedly installed relative to the ground through the first mounting hole (44i) and the second mounting hole (44j), and then the first fixing seat (44) is fixedly installed relative to the ground; both ends of the second seat plate portion (54b) of the second fixing seat (54) are respectively provided with a third mounting hole (54i) and a fourth mounting hole (54j); the second seat plate portion (54b) of the second fixing seat (54) is fixedly installed relative to the ground through the third mounting hole (54i) and the fourth mounting hole (54j), and then the second fixing seat (54) is fixedly installed relative to the ground.

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