Mounting head

Abstract

The invention relates to the technical field of semiconductor packaging equipment, and discloses a mounting head, which comprises a mounting seat, a driving assembly, an elastic force control assembly and a suction nozzle assembly, the mounting base comprises a mounting plate, a first mounting frame, a second mounting frame and a third mounting frame, the side face of the mounting plate is fixedly connected with the first mounting frame, the first mounting frame is provided with a first avoiding hole penetrating along the first axis, and in the extending direction of the first axis, one end of the first mounting frame is fixedly connected with the third mounting frame; a second mounting frame is arranged on the side, away from the third mounting frame, of the first mounting frame, and the second mounting frame is inserted into the first receding hole and fixedly connected with the third mounting frame; wherein the driving assembly is fixedly connected to the second mounting frame, the elastic force control assembly is rotationally connected to the third mounting frame, the driving assembly is in transmission connection with the elastic force control assembly, the suction nozzle assembly is fixedly connected with the elastic force control assembly, and the mounting head of the structure is reasonable in load distribution and beneficial to guaranteeing the mounting precision and the product yield.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of semiconductor packaging equipment, and more particularly relates to a mounting head. BACKGROUND

[0002] A die bonder is a core device for realizing high-precision bonding of a chip and a substrate. The mounting head is a core executive component of the die bonder and needs to complete actions such as chip picking and precise mounting. The performance of the mounting head directly determines the production efficiency and mounting precision of the device and the yield of products. In the related art, the mounting head comprises a driving assembly, an elastic force control assembly and a suction nozzle assembly. The driving assembly is used to realize rotation of the suction nozzle assembly. The elastic force control assembly is used to control the pressure of the suction nozzle assembly during mounting. The driving assembly is in transmission connection with the suction nozzle assembly, and the driving assembly is connected to the elastic force control assembly. The defect of this structure is that the elastic force control assembly needs to bear the load of the driving assembly and the suction nozzle assembly. When the mounting head moves, the inertia force is large, which is not conducive to ensuring the mounting precision. Therefore, the structural design of the mounting head is particularly important. The load of the mounting head needs to be reasonably distributed to ensure the mounting precision and the product yield. SUMMARY

[0003] The main purpose of the application is to provide a mounting head with reasonable load distribution.

[0004] According to a first aspect of the application, a mounting head is provided, having a first axis, comprising a mounting seat, a driving assembly, an elastic force control assembly and a suction nozzle assembly.

[0005] The mounting seat comprises a mounting plate, a first mounting frame, a second mounting frame and a third mounting frame. The side surface of the mounting plate is fixedly connected with the first mounting frame. The first mounting frame has a first avoiding hole penetrating along the first axis. In the extension direction of the first axis, one end of the first mounting frame is fixedly connected with the third mounting frame. The side of the first mounting frame away from the third mounting frame is provided with the second mounting frame. The second mounting frame is inserted into the first avoiding hole and fixedly connected with the third mounting frame.

[0006] The driving assembly is fixedly connected to the second mounting frame. The elastic force control assembly is rotatably connected to the third mounting frame. The driving assembly is in transmission connection with the elastic force control assembly. The suction nozzle assembly is fixedly connected with the elastic force control assembly. The driving assembly, the elastic force control assembly and the suction nozzle assembly are arranged along the first axis. The driving assembly is used to drive the elastic force control assembly to rotate around the first axis, so as to drive the suction nozzle assembly to rotate around the first axis.

[0007] In a specific embodiment of the application, the elastic force control assembly comprises a mounting shell, a first elastic sheet and a second elastic sheet.

[0008] The mounting shell is rotationally connected to the third mounting frame, and has a connecting shaft at one end close to the second mounting frame along the first axis, which is in transmission connection with the driving assembly.

[0009] The first elastic sheet is fixedly connected in the first mounting cavity, and the thickness direction of the first elastic sheet extends along the first axis.

[0010] The second elastic sheet is fixedly connected in the first mounting cavity, and the thickness direction of the second elastic sheet extends along the first axis.

[0011] The suction nozzle assembly comprises a transmission shaft, a fixing member and a suction component, the transmission shaft is coaxially arranged with the first axis, and one end of the transmission shaft is fixedly connected to the first elastic sheet through the fixing member along the axis of the transmission shaft, and the other end is fixedly connected to the suction component.

[0012] The fixing member is at least partially arranged between the first elastic sheet and the second elastic sheet, and the second elastic sheet is used for abutting against the fixing member.

[0013] In a specific embodiment of the present application, the attaching head further comprises a sleeve, a mounting cylinder and a bushing, the sleeve is fixedly connected to one end of the third mounting frame away from the second mounting frame along the first axis, the sleeve has a first mounting hole coaxially arranged with the first axis, the mounting cylinder is fixedly connected in the first mounting hole, and the mounting cylinder has a second mounting hole coaxially arranged with the first axis.

[0014] The transmission shaft penetrates through the second mounting hole, and the bushing is fixedly sleeved on the outer circumferential surface of the transmission shaft, and the outer circumferential surface of the bushing is in contact with the inner circumferential surface of the second mounting hole.

[0015] In a specific embodiment of the present application, the third mounting frame has a cylindrical second mounting cavity, the second mounting cavity is open at one end away from the second mounting frame along the first axis, the third mounting frame is provided with a second avoiding hole at one end close to the second mounting frame along the first axis, the second avoiding hole is in communication with the second mounting cavity, the mounting shell is arranged in the second mounting cavity, the connecting shaft is connected with the driving assembly through the second avoiding hole, and the sleeve covers the open end of the second mounting cavity.

[0016] The mounting head further comprises a rotating member fixedly sleeved on the transmission shaft and arranged in the second mounting cavity, wherein the rotating member has a cylindrical rotating portion, and an outer circumferential surface of the rotating portion is in contact with an inner circumferential surface of the second mounting cavity.

[0017] In a specific embodiment of the present application, the sleeve has a mounting groove in communication with the second mounting cavity.

[0018] An outer circumferential surface of the rotating portion away from the second mounting frame along the first axis is a photosensitive surface.

[0019] The mounting head further comprises a photoelectric sensor fixedly connected to the mounting groove, and a detection end of the photoelectric sensor faces the photosensitive surface.

[0020] In a specific embodiment of the present application, the mounting head further comprises a first clamping ring, a connecting ring and an elastic washer, the first clamping ring is fixedly connected to the transmission shaft, and the first clamping ring is located between the mounting cylinder and the first elastic sheet, the connecting ring is sleeved on the transmission shaft, and the connecting ring is located on a side of the first clamping ring close to the mounting cylinder, the elastic washer is sleeved on the transmission shaft, and the elastic washer is located between the connecting ring and the mounting cylinder, two ends of the elastic washer are respectively in abutment with the connecting ring and the mounting cylinder along the extension direction of the first axis, and an end of the connecting ring away from the elastic washer along the first axis is in abutment with the first clamping ring.

[0021] In a specific embodiment of the present application, the suction nozzle assembly further comprises a first rubber ring, a second rubber ring and a gas guide member, the first rubber ring and the second rubber ring are sleeved on the transmission shaft along the first axis and arranged in the second mounting hole, outer circumferential surfaces of the first rubber ring and the second rubber ring are in abutment with inner wall surfaces of the second mounting hole, and a gas guide cavity is formed between the first rubber ring, the second rubber ring, the inner wall surfaces of the second mounting hole and an outer circumferential surface of the transmission shaft.

[0022] The gas guide member is fixedly connected to a side wall of the sleeve, and the gas guide member has a gas channel in communication with the gas guide cavity.

[0023] The transmission shaft has a gas conveying passage in communication with the gas guide cavity and the adsorption component.

[0024] In a specific embodiment of the present application, the adsorption component comprises a base fixedly connected to the transmission shaft and a suction nozzle detachably fixedly connected to the base, and the suction nozzle is in communication with the gas conveying passage.

[0025] The mounting head further comprises a second clasp ring fixedly connected to the transmission shaft and located between the base and the fixing member, and the base abuts against the second clasp ring.

[0026] In one specific embodiment of the present application, the second mounting frame is hollow and columnar, and an inner cavity of the second mounting frame is open at an end thereof close to the mouthpiece assembly along the first axis, and a third avoiding hole is arranged at an end of the second mounting frame away from the third mounting frame along the first axis, and the second mounting frame is inserted into the first avoiding hole;

[0027] The third mounting frame has a fixing ring portion inserted into the inner cavity of the second mounting frame, and an outer peripheral surface of the fixing ring portion is attached to an inner cavity surface of the second mounting frame, and an inner hole of the fixing ring portion is in communication with the second avoiding hole, and the fixing ring portion and the second mounting frame are fixedly connected through fasteners;

[0028] The driving assembly comprises a motor and a coupling, the motor is fixedly connected to an end of the second mounting frame away from the third mounting frame along the first axis, an output shaft of the motor is inserted into the second mounting frame through the third avoiding hole, the coupling is arranged in the second mounting frame, and the coupling connects the output shaft of the motor and the connecting shaft;

[0029] The mounting shell further has a columnar mounting portion at an end thereof close to the second mounting frame along the first axis, the mounting portion is inserted into the second avoiding hole, and the connecting shaft is located on an end surface of the mounting portion close to the second mounting frame.

[0030] The mounting head further comprises a bearing arranged in the inner hole of the fixing ring portion, an inner peripheral surface of the bearing is fixedly connected to an outer peripheral surface of the mounting portion, and an outer peripheral surface of the bearing is fixedly connected to an inner hole wall surface of the fixing ring portion.

[0031] One of the technical solutions in the above technical scheme of the present application has at least one of the following advantages or beneficial effects:

[0032] The mounting head of the present application, the driving assembly is connected with the second mounting frame, the elastic force control assembly is connected with the third mounting frame, the suction nozzle assembly is connected with the elastic force control assembly, the second mounting frame is connected on the first mounting frame through the third mounting frame, thus, the load of the driving assembly is borne by the second mounting frame, the load of the elastic force control assembly and the suction nozzle assembly is borne by the third mounting frame, the load of the suction nozzle assembly is borne by the elastic force control assembly, and the load of the second mounting frame and the third mounting frame is borne by the first mounting frame, based on which, the load of the driving assembly, the elastic force control assembly and the suction nozzle assembly does not need to be borne directly by the first mounting frame, avoiding the local overload of the first mounting frame, at the same time, the load borne by the elastic force control assembly is relatively small, which can effectively reduce the inertia force accompanied thereby, the load distribution of the mounting head is reasonable, which is beneficial to guarantee the mounting precision and product yield. BRIEF DESCRIPTION OF DRAWINGS

[0033] The present application is further illustrated below in combination with the drawings and examples;

[0034] Figure 1 is a perspective view of the mounting head of the present application;

[0035] Figure 2 is an exploded view of the mounting head of the present application;

[0036] Figure 3 is an exploded view of the mounting seat of the present application;

[0037] Figure 4 is a sectional view of the mounting head of the present application;

[0038] Figure 5 is an enlarged schematic view of A in the present application; Figure 4

[0039] Figure 6 is an enlarged schematic view of B in the present application; Figure 4

[0040] Figure 7 is a perspective view of the elastic force control assembly of the present application;

[0041] Figure 8 is a sectional view of the elastic force control assembly of the present application.

[0042] ​​In the figure, 1, mounting seat; 101, mounting plate; 102, first mounting frame; 1021, first avoiding hole; 103, second mounting frame; 1031, third avoiding hole; 104, third mounting frame; 1041, second mounting cavity; 1042, second avoiding hole; 104A, fixed ring part; 2, driving assembly; 21, motor; 22, shaft coupling; 3, elastic force control assembly; 31, mounting shell; 311, connecting shaft; 3101, first mounting cavity; 312, mounting part; 32, first elastic sheet; 33, second elastic sheet; 4, suction nozzle assembly; 41, transmission shaft; 4101, gas conveying passage; 42, fixing part; 43, adsorption part; 431, base; 432, suction nozzle; 44, first rubber ring; 45, second rubber ring; 46, gas guiding part; 5, sleeve; 501, first mounting hole; 502, mounting groove; 6, mounting cylinder; 601, second mounting hole; 7, bushing; 8, rotating part; 9, photoelectric sensor; 10, first snap ring; 11, connecting ring; 12, elastic washer; 13, second snap ring; 14, fastener; 15, bearing; 100, first axis; 200, gas guiding cavity. DETAILED DESCRIPTION

[0043] Embodiments of the present application are described in detail below with reference to the attached drawings, wherein the same or similar components have the same or similar designations throughout the various figures. The embodiments described below are examples of implementations of the present application and are not intended to limit the scope of the present application.

[0044] Reference Signs List Figures 1 to 8 As shown in the figure, the mounting head of the preferred embodiment of the present application has a first axis 100 and comprises a mounting seat 1, a driving assembly 2, an elastic force control assembly 3, and a suction nozzle assembly 4. The mounting seat 1 comprises a mounting plate 101, a first mounting frame 102, a second mounting frame 103, and a third mounting frame 104. The side surface of the mounting plate 101 is fixedly connected to the first mounting frame 102. The first mounting frame 102 has a first avoiding hole 1021 extending along the first axis 100. In the extension direction of the first axis 100, one end of the first mounting frame 102 is fixedly connected to the third mounting frame 104. The side of the first mounting frame 102 away from the third mounting frame 104 is provided with the second mounting frame 103. The second mounting frame 103 is inserted into the first avoiding hole 1021 and fixedly connected to the third mounting frame 104. The driving assembly 2 is fixedly connected to the second mounting frame 103. The elastic force control assembly 3 is rotatably connected to the third mounting frame 104. The driving assembly 2 is in transmission connection with the elastic force control assembly 3. The suction nozzle assembly 4 is fixedly connected to the elastic force control assembly 3. The driving assembly 2, the elastic force control assembly 3, and the suction nozzle assembly 4 are arranged along the first axis 100. The driving assembly 2 is used to drive the elastic force control assembly 3 to rotate around the first axis 100, so as to drive the suction nozzle assembly 4 to rotate around the first axis 100.

[0045] Specifically, the driving assembly 2 is connected with the second mounting frame 103, the elastic force control assembly 3 is connected with the third mounting frame 104, the suction nozzle assembly 4 is connected with the elastic force control assembly 3, and the second mounting frame 103 is connected on the first mounting frame 102 through the third mounting frame 104, so that the load of the driving assembly 2 is borne by the second mounting frame 103, the load of the elastic force control assembly 3 and the suction nozzle assembly 4 is borne by the third mounting frame 104, the load of the suction nozzle assembly 4 is borne by the elastic force control assembly 3, and the load of the second mounting frame 103 and the third mounting frame 104 is borne by the first mounting frame 102, based on which, the load of the driving assembly 2 and the elastic force control assembly 3 does not need to be directly borne by the first mounting frame 102, avoiding the local overload of the first mounting frame 102, and meanwhile, the load borne by the elastic force control assembly 3 is relatively small, which can effectively reduce the inertia force accompanied thereby, the load distribution of the pick-and-place head is reasonable, and it is beneficial to guarantee the pick-and-place precision and product yield.

[0046] In the present application, the driving assembly 2 is used to rotate the suction nozzle assembly 4 around the first axis 100 to adjust the posture of the chip; the elastic force control assembly 3 is used to control the downward pressure of the suction nozzle assembly 4 when the chip is picked and placed; and the suction nozzle assembly 4 is used to adsorb and release the chip to complete the pick-and-place work of the chip.

[0047] In the embodiment, the elastic force control assembly 3 comprises a mounting shell 31, a first elastic sheet 32 and a second elastic sheet 33. The mounting shell 31 is rotationally connected to the third mounting frame 104. The mounting shell 31 has a connecting shaft 311 at one end close to the second mounting frame 103 along the first axis 100. The connecting shaft 311 is in transmission connection with the driving assembly 2. The mounting shell 31 has a first mounting cavity 3101 which is open at one end away from the second mounting frame 103 along the first axis 100. The first elastic sheet 32 is fixedly connected in the first mounting cavity 3101. The thickness direction of the first elastic sheet 32 extends along the first axis 100. The second elastic sheet 33 is fixedly connected in the first mounting cavity 3101. The thickness direction of the second elastic sheet 33 extends along the first axis 100. Along the first axis 100, the second elastic sheet 33 is located at one side of the first elastic sheet 32 close to the second mounting frame 103. The second elastic sheet 33 is arranged in space with the first elastic sheet 32. The suction nozzle assembly 4 comprises a transmission shaft 41, a fixing member 42 and a suction component 43. The transmission shaft 41 is coaxially arranged with the first axis 100. One end of the transmission shaft 41 along its axis is fixedly connected to the first elastic sheet 32 through the fixing member 42. The other end of the transmission shaft 41 is fixedly connected to the suction component 43. The suction component 43 is used for suctioning the chip. The fixing member 42 is arranged at least partially between the first elastic sheet 32 and the second elastic sheet 33. The second elastic sheet 33 is used for abutting against the fixing member 42. Exemplarily, the first elastic sheet 32 and the second elastic sheet 33 are both circular. The axis of the first elastic sheet 32 and the axis of the second elastic sheet 33 are both the same as the first axis 100. The outer edge of the first elastic sheet 32 and the outer edge of the second elastic sheet 33 are fixed with the mounting shell 31. The fixing member 42 is a bolt. The end face of the transmission shaft 41 close to the first elastic sheet 32 along its axis is provided with a threaded hole. The center of the first elastic sheet 32 is provided with a mounting through hole. The bolt is threadedly connected with the threaded hole through the mounting through hole to fixedly connect the transmission shaft 41 to the center of the first elastic sheet 32. The head of the bolt is located between the first elastic sheet 32 and the second elastic sheet 33. Specifically, the mounting head will exert pressure on the chip when mounting the chip to ensure stable mounting of the chip. Based on this, when mounting the chip, the extension direction of the first axis 100 is vertical direction. The mounting head moves downward to make the suction component 43 place the chip on the substrate. The chip contacts with the substrate. The suction component 43 moves upward relative to the third mounting frame 104. At the same time, the transmission shaft 41 moves upward. At this time, the first elastic sheet 32 deforms upward and exerts downward elastic force on the transmission shaft 41. The first elastic sheet 32 and the second elastic sheet 33 have stable elastic coefficient K. Thus, according to the formula F=KX, the force can be obtained according to the displacement X of the transmission shaft 41 to realize accurate force control. In the application, the elastic coefficient of the second elastic sheet 33 is greater than the elastic coefficient of the first elastic sheet 32. Thus, when large force control is needed, the mounting head moves downward to abut the fixing member 42 against the second elastic sheet 33. The first elastic sheet 32 and the second elastic sheet 33 simultaneously exert downward elastic force on the transmission shaft 41 to realize force control.Based on the first and second elastic sheets 32 and 33, the force control range of the mounting head is relatively large, and the mounting head can be suitable for mounting work of chips of different specifications and models.

[0048] In the embodiment, the mounting head further comprises a sleeve 5, a mounting cylinder 6 and a bushing 7. The sleeve 5 is fixedly connected to one end of the third mounting frame 104 away from the second mounting frame 103 along the first axis 100. The sleeve 5 has a first mounting hole 501 coaxially arranged with the first axis 100. The mounting cylinder 6 is fixedly connected in the first mounting hole 501. The mounting cylinder 6 has a second mounting hole 601 coaxially arranged with the first axis 100. The transmission shaft 41 penetrates the second mounting hole 601. The outer circumferential surface of the transmission shaft 41 is fixedly sleeved with the bushing 7. The outer circumferential surface of the bushing 7 is in contact with the outer circumferential surface of the second mounting hole 601. Specifically, the sleeve 5 and the mounting cylinder 6 play a role in supporting and restricting the transmission shaft 41, which can prevent the transmission shaft 41 from radial deviation during rotation. When the transmission shaft 41 rotates, the bushing 7 is in contact with the mounting cylinder 6. At this time, the bushing 7 bears the friction loss, reducing the wear of the mounting cylinder 6 and the transmission shaft 41.

[0049] In the embodiment, the third mounting frame 104 has a cylindrical second mounting cavity 1041. The second mounting cavity 1041 is open at one end away from the second mounting frame 103 along the first axis 100. The third mounting frame 104 is provided with a second avoiding hole 1042 at one end close to the second mounting frame 103 along the first axis 100. The second avoiding hole 1042 is in communication with the second mounting cavity 1041. The mounting shell 31 is arranged in the second mounting cavity 1041. The connecting shaft 311 is connected with the driving assembly 2 through the second avoiding hole 1042. The sleeve 5 covers the open end of the second mounting cavity 1041. The mounting head further comprises a rotating member 8. The rotating member 8 is fixedly sleeved on the transmission shaft 41 by interference fit. The rotating member 8 is arranged in the second mounting cavity 1041. The rotating member 8 has a cylindrical rotating part. The outer circumferential surface of the rotating part is in contact with the inner circumferential surface of the second mounting cavity 1041. That is, the axis of the rotating part is the same as the first axis 100. At this time, the rotating member 8 also plays a role in restricting, which can further prevent the rotating shaft from radial deviation during rotation. The transmission shaft 41 has high operation stability.

[0050] It should be noted that the third mounting frame 104 is cylindrical. The outer circumferential surface of one end close to the first mounting frame 102 is provided with connecting ears. The connecting ears are fixedly connected to the first mounting frame 102 by screws. The number of the connecting ears is multiple. The multiple connecting ears are arranged at intervals around the axis of the third mounting frame 104. The third mounting frame 104 with such structure has the advantages of simple structure, uniform stress distribution, strong load capacity. Further, the sidewall of the third mounting frame 104 is further provided with lightening holes. The number of the lightening holes is multiple. The multiple lightening holes are uniformly arranged around the axis of the third mounting frame 104. The third mounting frame 104 has the characteristics of lightweight.

[0051] In the embodiment, the sleeve 5 has a mounting groove 502 in communication with the second mounting cavity 1041; the photosensitive surface is located on the side of the rotating part facing away from the second mounting frame 103 along the first axis 100; the mounting head further comprises a photoelectric sensor 9 fixedly connected to the mounting groove 502, and the detection end of the photoelectric sensor 9 faces the photosensitive surface; specifically, the photosensitive surface is provided with a periodic light reflection / transmission structure, and when the rotating part 8 rotates following the transmission shaft 41, the photosensitive surface can generate an optical change that can be captured by the photoelectric sensor 9; the photoelectric sensor 9 monitors the rotation parameters of the transmission shaft 41 by stably capturing the optical change; based on this, the optical sensor cooperates with the driving assembly 2 to effectively control the rotating action of the suction nozzle assembly 4; this is prior art, and the present application does not make redundant description hereon; in addition to the functions of supporting and constraining the transmission shaft 41, the sleeve 5 also functions to fixedly mount the photoelectric sensor 9; in addition to the functions of supporting and constraining the transmission shaft 41, the rotating part 8 also functions to assist in monitoring the rotation parameters of the transmission shaft 41; based on this, the mounting head has the feature of compact structure.

[0052] In the embodiment, the mounting head further comprises a first clamping ring 10, a connecting ring 11 and an elastic washer 12; the first clamping ring 10 is fixedly connected to the transmission shaft 41, and is located between the mounting cylinder 6 and the first elastic sheet 32; the connecting ring 11 is sleeved on the transmission shaft 41, and is located on the side of the first clamping ring 10 close to the mounting cylinder 6; the elastic washer 12 is sleeved on the transmission shaft 41, and is located between the connecting ring 11 and the mounting cylinder 6; along the extension direction of the first axis 100, the two ends of the elastic washer 12 are respectively abutted against the connecting ring 11 and the mounting cylinder 6; the end of the connecting ring 11 away from the elastic washer 12 along the first axis 100 is abutted against the first clamping ring 10; specifically, since the sleeve 5 is fixedly connected to the third mounting frame 104, and the mounting cylinder 6 is fixedly connected to the sleeve 5, the setting of the elastic washer 12 can apply an upward elastic force to the first clamping ring 10, so as to offset the gravity of the suction nozzle assembly 4 and reduce the influence of the load of the suction nozzle assembly 4 on the initial position of the first elastic sheet 32 and the force control agility; it should be noted that the parameters of the elastic washer 12 are selected by the person skilled in the art according to actual needs to offset the gravity of the suction nozzle assembly 4, and the present application does not limit this.

[0053] In the embodiment, the nozzle assembly 4 further comprises a first rubber ring 44, a second rubber ring 45 and a gas guide 46. The first rubber ring 44 and the second rubber ring 45 are sleeved on the transmission shaft 41 along the first axis 100 and are arranged in the second mounting hole 601. The outer circumferential surface of the first rubber ring 44 and the second rubber ring 45 abuts against the inner wall surface of the second mounting hole 601, and a gas guide cavity 200 is formed between the first rubber ring 44, the second rubber ring 45, the inner wall surface of the second mounting hole 601 and the outer circumferential surface of the transmission shaft 41. The gas guide 46 is fixedly connected to the side wall of the sleeve 5. The gas guide 46 has a gas channel, and the gas channel is in communication with the gas guide cavity 200. The side wall of the sleeve 5 has a mounting through hole, and the side wall of the mounting cylinder 6 has a gas conveying hole. The gas guide 46 is fixedly connected in the mounting through hole, and the gas channel is connected to the gas guide cavity 200 through the mounting through hole and the gas conveying hole. The transmission shaft 41 has a gas conveying passage 4101, and the gas conveying passage 4101 is in communication with the gas guide cavity 200 and the adsorption component 43. In actual application, the gas guide 46 is connected to a vacuum device through a gas conveying pipeline. When the chip needs to be adsorbed, the vacuum device is started, air is sucked through the gas conveying passage 4101, the gas guide cavity 200 and the gas channel, so that a negative pressure is formed at the adsorption component 43, and the chip is adsorbed. When the chip needs to be released, the vacuum device stops working or switches the gas path, the negative pressure at the adsorption component 43 disappears, and the chip can be released. The first rubber ring 44 and the second rubber ring 45 are arranged in the second mounting hole 601 to form the gas guide cavity 200, which has a simple and compact structure and effectively ensures the normal operation of the chip mounting work.

[0054] Further, a lubricating oil layer is arranged between the first rubber ring 44 and the inner wall surface of the second mounting hole 601 and between the second rubber ring 45 and the inner wall surface of the second mounting hole 601, so as to reduce the friction between the first rubber ring 44, the second rubber ring 45 and the inner wall surface of the second mounting hole 601 and ensure that the transmission shaft 41 can rotate smoothly.

[0055] In the embodiment, the transmission shaft 41 has a first annular groove and a second annular groove. The axis of the first annular groove and the second annular groove is the same as the axis of the transmission shaft 41. The first rubber ring 44 is arranged in the first annular groove, and the second rubber ring 45 is arranged in the second annular groove, so that the first rubber ring 44 and the second rubber ring 45 are stably connected to the transmission shaft 41.

[0056] In the embodiment, the adsorption component 43 comprises a base 431 and a suction nozzle 432, the base 431 is fixedly connected to the transmission shaft 41, the suction nozzle 432 is detachably fixedly connected to the base 431, the suction nozzle 432 communicates with the gas conveying channel 4101, specifically, the adsorption component 43 adsorbs the chip through the suction nozzle 432, and the suction nozzle 432 is detachably connected to the base 431, and the advantage lies in that different suction nozzles 432 can be replaced according to the type of the chip to be mounted, so that the mounting head can be suitable for mounting work of chips of various specifications; the mounting head further comprises a second clamping ring 13, the second clamping ring 13 is fixedly connected to the transmission shaft 41, and the second clamping ring 13 is located between the base 431 and the fixing piece 42, and the base 431 abuts against the second clamping ring 13, specifically, the base 431 is connected to the transmission shaft 41 in a manner of interference fit, and a jackscrew is further connected to the base 431 to ensure the stable connection of the base 431, and the second clamping ring 13 is arranged to limit the movement of the base 431 along the first axis 100 towards the fixing piece 42, thereby further ensuring the stable connection of the base 431.

[0057] In the embodiment, the second mounting frame 103 is hollow and columnar, an inner cavity of the second mounting frame 103 is open at one end close to the suction nozzle assembly 4 along the first axis 100, the second mounting frame 103 is provided with a third avoiding hole 1031 at one end away from the third mounting frame 104 along the first axis 100, and the second mounting frame 103 is inserted into the first avoiding hole 1021, the second mounting frame 103 with such a structure is simple in structure, uniform in stress distribution, and strong in load resistance; the third mounting frame 104 has a fixing ring part 104A, the fixing ring part 104A is inserted into the inner cavity of the second mounting frame 103, an outer peripheral surface of the fixing ring part 104A is in abutment with an inner cavity surface of the second mounting frame 103, an inner hole of the fixing ring part 104A communicates with the second avoiding hole 1042, and the fixing ring part 104A is fixedly connected to the second mounting frame 103 through the fastener 14, wherein the fastener 14 is a screw, the outer peripheral surface of the fixing ring part 104A is provided with a threaded hole, the second mounting frame 103 is provided with a mounting through hole, the screw is connected to the threaded hole through the mounting through hole to fixedly connect the fixing ring part 104A to the second mounting frame 103, wherein a plurality of fasteners 14 are arranged to ensure the stable connection of the fixing ring part 104A to the second mounting frame 103, such a structure realizes the connection of the second mounting frame 103 to the third mounting frame 104, which is simple in structure and convenient to assemble; further, the side wall of the second mounting frame 103 is further provided with a plurality of weight-reducing holes arranged at intervals, and the weight-reducing holes are arranged to make the mounting head have the characteristics of lightweight.

[0058] The driving assembly 2 comprises a motor 21 and a coupling 22, the motor 21 is fixedly connected to one end of the second mounting frame 103 away from the third mounting frame 104 along the first axis 100, the output shaft of the motor 21 is inserted into the second mounting frame 103 through the third avoiding hole 1031, the coupling 22 is arranged in the second mounting frame 103, and the coupling 22 connects the output shaft of the motor 21 and the connecting shaft 311. In actual application, the motor 21 drives the elastic force control assembly 3 to rotate around the first axis 100 through the coupling 22, the elastic force control assembly 3 drives the transmission shaft 41 to rotate around the first axis 100, so as to drive the adsorption component 43 to rotate around the first axis 100.

[0059] Further, the mounting shell 31 has a cylindrical mounting portion 312 at one end of the mounting shell 31 close to the second mounting frame 103 along the first axis 100, the mounting portion 312 is inserted into the second avoiding hole 1042, and the connecting shaft 311 is located on the end face of the mounting portion 312 close to the second mounting frame 103; the mounting head further comprises a bearing 15 arranged in the inner hole of the fixed ring portion 104A, the inner periphery of the bearing 15 is fixedly connected to the outer periphery of the mounting portion 312, the outer periphery of the bearing 15 is fixedly connected to the inner hole wall of the fixed ring portion 104A, and in addition, the side of the fixed ring portion 104A away from the suction nozzle assembly 4 along the first axis 100 is further fixedly connected with a mounting ring through a screw, the inner edge of the mounting ring is in contact with the bearing 15, so as to fix the bearing 15 between the mounting portion 312 and the fixed ring portion 104A. Specifically, the bearing 15 is beneficial to the rotation of the elastic force control assembly 3, and the fixed ring portion 104A not only plays a role of connecting the second mounting frame 103, but also plays a role of limiting the position of the bearing 15, and the mounting head has the characteristics of compact structure.

[0060] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A mounting head having a first axis (100), characterized in that The mounting seat (1), the driving assembly (2), the elastic force control assembly (3) and the suction nozzle assembly (4) are arranged along the first axis (100). The mounting seat (1) comprises a mounting plate (101), a first mounting frame (102), a second mounting frame (103) and a third mounting frame (104), the side surface of the mounting plate (101) is fixedly connected with the first mounting frame (102), the first mounting frame (102) has a first avoiding hole (1021) penetrating along the first axis (100), in the extension direction of the first axis (100), one end of the first mounting frame (102) is fixedly connected with the third mounting frame (104), the side of the first mounting frame (102) away from the third mounting frame (104) is provided with the second mounting frame (103), the second mounting frame (103) is inserted into the first avoiding hole (1021) and fixedly connected with the third mounting frame (104); The driving assembly (2) is fixedly connected on the second mounting frame (103), the elastic force control assembly (3) is rotationally connected on the third mounting frame (104), the driving assembly (2) is in transmission connection with the elastic force control assembly (3), the suction nozzle assembly (4) is fixedly connected with the elastic force control assembly (3), the driving assembly (2), the elastic force control assembly (3) and the suction nozzle assembly (4) are arranged along the first axis (100), the driving assembly (2) is used for driving the elastic force control assembly (3) to rotate around the first axis (100) to drive the suction nozzle assembly (4) to rotate around the first axis (100).

2. The pick-and-place head according to claim 1, characterized in that The elastic force control assembly (3) comprises a mounting shell (31), a first elastic sheet (32) and a second elastic sheet (33); The mounting shell (31) is rotationally connected on the third mounting frame (104), one end of the mounting shell (31) close to the second mounting frame (103) along the first axis (100) is provided with a connecting shaft (311), the connecting shaft (311) is in transmission connection with the driving assembly (2), the mounting shell (31) has a first mounting cavity (3101), one end of the first mounting cavity (3101) away from the second mounting frame (103) along the first axis (100) is open; The first elastic sheet (32) is fixedly connected in the first mounting cavity (3101), and the thickness direction of the first elastic sheet (32) extends along the first axis (100); The second elastic sheet (33) is fixedly connected in the first mounting cavity (3101), the thickness direction of the second elastic sheet (33) extends along the first axis (100), along the first axis (100), the second elastic sheet (33) is located on the side of the first elastic sheet (32) close to the second mounting frame (103), and the second elastic sheet (33) is arranged in spacing with the first elastic sheet (32). The suction nozzle assembly (4) comprises a transmission shaft (41), a fixing member (42) and a suction component (43), the transmission shaft (41) is coaxially arranged with the first axis (100), one end of the transmission shaft (41) is fixedly connected to the first elastic sheet (32) through the fixing member (42), and the other end is fixedly connected to the suction component (43); The fixing member (42) is arranged at least partially between the first elastic sheet (32) and the second elastic sheet (33), and the second elastic sheet (33) is used for abutting against the fixing member (42).

3. The bonding head according to claim 2, wherein The mounting head further comprises a sleeve (5), a mounting cylinder (6) and a bushing (7), the sleeve (5) is fixedly connected to one end of the third mounting frame (104) away from the second mounting frame (103) along the first axis (100), the sleeve (5) has a first mounting hole (501) coaxially arranged with the first axis (100), the first mounting hole (501) is fixedly connected with the mounting cylinder (6), and the mounting cylinder (6) has a second mounting hole (601) coaxially arranged with the first axis (100); The transmission shaft (41) penetrates the second mounting hole (601), and the outer periphery of the transmission shaft (41) is fixedly sleeved with the bushing (7), and the outer periphery of the bushing (7) is in contact with the inner periphery of the second mounting hole (601).

4. The pick-and-place head of claim 3, wherein The third mounting frame (104) has a cylindrical second mounting cavity (1041), one end of the second mounting cavity (1041) away from the second mounting frame (103) along the first axis (100) is open, one end of the third mounting frame (104) close to the second mounting frame (103) along the first axis (100) is provided with a second avoiding hole (1042), the second avoiding hole (1042) is in communication with the second mounting cavity (1041), the mounting shell (31) is arranged in the second mounting cavity (1041), the connecting shaft (311) is connected with the driving assembly (2) through the second avoiding hole (1042), and the sleeve (5) covers the open end of the second mounting cavity (1041); The mounting head further comprises a rotating member (8), the rotating member (8) is fixedly sleeved on the transmission shaft (41), and the rotating member (8) is arranged in the second mounting cavity (1041), the rotating member (8) has a cylindrical rotating part, and the outer periphery of the rotating part is in contact with the inner periphery of the second mounting cavity (1041).

5. The pick-and-place head of claim 4, wherein The sleeve (5) has a mounting groove (502), and the mounting groove (502) is in communication with the second mounting cavity (1041); The side of the rotating part away from the second mounting frame (103) along the first axis (100) is a photosensitive surface; The mounting head further comprises a photoelectric sensor (9), the photoelectric sensor (9) is fixedly connected to the mounting groove (502), and the detection end of the photoelectric sensor (9) faces the photosensitive surface.

6. The pick-and-place head of claim 3, wherein The mounting head further comprises a first snap ring (10), a connecting ring (11) and an elastic washer (12), the first snap ring (10) is fixedly connected on the transmission shaft (41), and the first snap ring (10) is located between the mounting cylinder (6) and the first elastic sheet (32), the connecting ring (11) is sleeved on the transmission shaft (41), and the connecting ring (11) is located on the side of the first snap ring (10) close to the mounting cylinder (6), the elastic washer (12) is sleeved on the transmission shaft (41), and the elastic washer (12) is located between the connecting ring (11) and the mounting cylinder (6), along the extension direction of the first axis (100), the two ends of the elastic washer (12) are respectively abutted against the connecting ring (11) and the mounting cylinder (6), and the end of the connecting ring (11) away from the elastic washer (12) along the first axis (100) is abutted against the first snap ring (10).

7. The pick-and-place head of claim 3, wherein The suction nozzle assembly (4) further comprises a first rubber ring (44), a second rubber ring (45) and a gas guide piece (46), the first rubber ring (44) and the second rubber ring (45) are sleeved on the transmission shaft (41) along the first axis (100), and the first rubber ring (44) and the second rubber ring (45) are arranged in the second mounting hole (601), the outer circumferential surface of the first rubber ring (44) and the second rubber ring (45) is abutted against the inner wall surface of the second mounting hole (601), and a gas guide cavity (200) is formed between the first rubber ring (44), the second rubber ring (45), the inner wall surface of the second mounting hole (601) and the outer circumferential surface of the transmission shaft (41); The gas guide piece (46) is fixedly connected to the side wall of the sleeve (5), the gas guide piece (46) has a gas channel, and the gas channel is in communication with the gas guide cavity (200); The transmission shaft (41) has a gas conveying channel (4101), and the gas conveying channel (4101) communicates the gas guide cavity (200) and the adsorption component (43).

8. The placement head of claim 7, wherein The adsorption component (43) comprises a base (431) and a suction nozzle (432), the base (431) is fixedly connected to the transmission shaft (41), the suction nozzle (432) is detachably fixedly connected to the base (431), and the suction nozzle (432) is in communication with the gas conveying channel (4101); The mounting head further comprises a second snap ring (13), the second snap ring (13) is fixedly connected to the transmission shaft (41), and the second snap ring (13) is located between the base (431) and the fixing piece (42), and the base (431) is abutted against the second snap ring (13).

9. The pick-and-place head of claim 4, wherein, The second mounting frame (103) is hollow and columnar, and an inner cavity of the second mounting frame (103) is open at one end close to the mouthpiece assembly (4) along the first axis (100), and the second mounting frame (103) is provided with a third avoiding hole (1031) at one end away from the third mounting frame (104) along the first axis (100), and the second mounting frame (103) is inserted into the first avoiding hole (1021); The third mounting frame (104) has a fixing ring part (104A) inserted into the inner cavity of the second mounting frame (103), and an outer peripheral surface of the fixing ring part (104A) is attached to an inner cavity surface of the second mounting frame (103), and an inner hole of the fixing ring part (104A) is communicated with the second avoiding hole (1042), and the fixing ring part (104A) is fixedly connected with the second mounting frame (103) through a fastener (14); The driving assembly (2) comprises a motor (21) and a shaft coupling (22), the motor (21) is fixedly connected at one end of the second mounting frame (103) away from the third mounting frame (104) along the first axis (100), an output shaft of the motor (21) is inserted into the second mounting frame (103) through the third avoiding hole (1031), and the shaft coupling (22) is arranged in the second mounting frame (103), and the shaft coupling (22) connects the output shaft of the motor (21) and the connecting shaft (311).

10. The bonding head according to claim 9, wherein The mounting shell (31) further has a columnar mounting part (312) at one end close to the second mounting frame (103) along the first axis (100), the mounting part (312) is inserted into the second avoiding hole (1042), and the connecting shaft (311) is located on an end surface of the mounting part (312) close to the second mounting frame (103); The mounting shell (31) further has a columnar mounting part (312) at one end close to the second mounting frame (103) along the first axis (100), the mounting part (312) is inserted into the second avoiding hole (1042), and the connecting shaft (311) is located on an end surface of the mounting part (312) close to the second mounting frame (103); The mounting shell (31) further has a columnar mounting part (312) at one end close to the second mounting frame (103) along the first axis (100), the mounting part (312) is inserted into the second avoiding hole (1042), and the connecting shaft (311) is located on an end surface of the mounting part (312) close to the second mounting frame (103);

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