Welding wire protection assembly, pay-off mechanism and welding wire machine

Abstract

The utility model provides a welding wire protection assembly, a pay-off mechanism and a welding wire machine. The welding wire protection assembly comprises a wire passing plate, an air nozzle assembly and a blowing nozzle assembly. The wire passing plate is provided with a protection space for a welding wire to pass through. The air nozzle assembly is installed on the wire passing plate, and an air outlet of the air nozzle assembly faces the protection space and is used for blowing air into the protection space; the blowing nozzle assembly is installed on the air nozzle assembly, and an air outlet of the blowing nozzle assembly is opposite to an air outlet of the air nozzle assembly and used for supplementing air to the area where the air outlet of the air nozzle assembly is located. According to the utility model, the air nozzle assembly is arranged on the wire passing plate, and the air outlet of the air nozzle assembly faces the protection space and is used for blowing air into the protection space, so that the welding wire is protected; the filtered gas is blown to the negative pressure area through the blowing nozzle assembly, pressure compensation is carried out on the negative pressure area, blowing protection is achieved, pollution gas is prevented from entering the protection space where the bonding wire passes through, and therefore the quality of the bonding wire is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of wire bonding protection assemblies, in particular to a wire bonding protection assembly, a wire feeding mechanism and a wire bonding machine. Background Art

[0002] When a wire bonding machine on the market (such as a semiconductor wire bonding machine, a wire bonding machine) works, it is necessary to connect the electrode leads on the surface of a semiconductor device chip to the external leads of a substrate or a lead frame through heat, pressure, and ultrasonic waves using a wire (such as a fine metal wire like gold wire, copper wire, aluminum wire, etc.). During this process, the wire feeding mechanism needs to continuously supply the wire to the wire bonding area. During the operation of the wire feeding mechanism, the wire has relatively strict environmental requirements. If the wire is contaminated, it will seriously affect the wire bonding quality. Most wire feeding mechanisms on the market are not equipped with a wire bonding protection assembly, and there is no protection measure for the wire, so the wire is easily contaminated. Summary of the Utility Model

[0003] The utility model provides a wire bonding protection assembly, a wire feeding mechanism and a wire bonding machine to solve the problem that the existing wire has no protection measure and is easily contaminated.

[0004] A wire bonding protection assembly includes a wire passing plate, a nozzle assembly and a blowing nozzle assembly;

[0005] A protection space for the wire to pass through is provided on the wire passing plate;

[0006] The nozzle assembly is installed on the wire passing plate, and the air outlet of the nozzle assembly faces the protection space for blowing air into the protection space;

[0007] The blowing nozzle assembly is installed on the nozzle assembly, and the air outlet of the blowing nozzle assembly is arranged opposite to the air outlet of the nozzle assembly for supplementing air to the area where the air outlet of the nozzle assembly is located.

[0008] Preferably, the nozzle assembly includes a nozzle body, a nozzle cover and a nozzle air inlet joint. The nozzle cover is fitted and connected to the nozzle body to form a first air chamber and a first air outlet channel communicating with the first air chamber;

[0009] One end of the nozzle air inlet joint is connected to the nozzle body and communicates with the first air chamber;

[0010] The air outlet of the first air outlet channel faces the protection space for blowing air into the protection space.

[0011] Preferably, the nozzle body includes a first body and a protruding portion extending from the middle of one side surface of the first body;

[0012] A first accommodating groove is provided in the first main body, and a first diversion groove communicating with the first accommodating groove is provided on the protruding portion;

[0013] The first accommodating groove cooperates with the nozzle cap to form the first air chamber;

[0014] The first diversion groove cooperates with the nozzle cap to form the first air outlet passage.

[0015] Preferably, a plurality of the first diversion grooves are provided, and the plurality of the first diversion grooves are arranged in parallel at intervals on the protruding portion.

[0016] Preferably, the blowing nozzle assembly includes a blowing nozzle main body, a blowing nozzle cap and a blowing nozzle air inlet joint. The blowing nozzle cap is attached to the blowing nozzle main body to form a second air chamber and a second air outlet passage communicating with the second air chamber;

[0017] One end of the blowing nozzle air inlet joint is connected to the blowing nozzle main body and communicates with the second air chamber;

[0018] The air outlet of the second air outlet passage is arranged opposite to the air outlet of the nozzle assembly for supplementing air to the area where the air outlet of the blowing nozzle assembly is located.

[0019] Preferably, the blowing nozzle main body includes a second main body;

[0020] A second accommodating groove is provided in the second main body, and a second diversion groove communicating with the second accommodating groove is provided on the second main body;

[0021] The second accommodating groove cooperates with the blowing nozzle cap to form the second air chamber;

[0022] The second diversion groove cooperates with the blowing nozzle cap to form the second air outlet passage.

[0023] Preferably, a plurality of the second diversion grooves are provided, and the plurality of the second diversion grooves are arranged in parallel at intervals on the second main body.

[0024] A wire paying-off mechanism includes a fixing plate, a wire paying-off motor, a wire paying-off bracket, a wire wheel and the wire soldering protection assembly as described above;

[0025] The wire paying-off motor is fixed on the fixing plate, the wire paying-off bracket is fixed on the output shaft of the wire paying-off motor, and the wire wheel is installed on the wire paying-off bracket;

[0026] The wire passing plate of the wire soldering protection assembly is installed on the fixing plate for the wire soldering to pass through.

[0027] Preferably, the wire paying-off mechanism further includes a guide post, and the guide post is installed on the fixing plate for guiding the wire soldering.

[0028] Preferably, the wire pay-off bracket includes a connecting body and a clamping arm extending from one end of the connecting body in a direction perpendicular to the connecting body;

[0029] The connecting body is mounted on the output shaft of the wire pay-off motor;

[0030] The wire wheel is sleeved on the clamping arm.

[0031] A wire bonding machine includes the wire pay-off mechanism as described above.

[0032] The wire bonding protection assembly provided by the embodiment of the present invention is used to protect the wire bonding and avoid the wire bonding from being contaminated. Specifically, it includes a wire passing plate, a gas nozzle assembly and a blowing nozzle assembly; during installation, a protection space for the wire bonding to pass through is provided on the wire passing plate. Specifically, the wire passing plate includes a first wire plate and a second wire plate arranged oppositely, and the first wire plate and the second wire plate cooperate to form a protection space for the wire bonding to pass through. The gas nozzle assembly is mounted on the wire passing plate, and the air outlet of the gas nozzle assembly faces the protection space, and is used to blow air into the protection space; when the wire pay-off mechanism pays off the wire, the wire bonding passes through the protection space, and the gas lifts the wire bonding to achieve the effect of protecting the wire bonding and avoid the wire bonding from being contaminated, ensuring the quality of the wire bonding. However, when the gas nozzle assembly continuously blows air, a negative pressure area will appear around the air outlet due to the too fast air flow velocity, and the gas in the environment carries dust into this negative pressure area and adheres to the gas nozzle assembly, resulting in the dirtiness of the gas nozzle assembly. The air outlet of the gas nozzle assembly will generate polluted gas and blow the polluted gas into the protection space between the first wire plate and the second wire plate, resulting in the contamination of the wire bonding and affecting the quality of the wire bonding. In this example, the blowing nozzle assembly is mounted on the gas nozzle assembly, and the air outlet of the blowing nozzle assembly is arranged opposite to the air outlet of the gas nozzle assembly, and is used to supplement air to the area where the air outlet of the gas nozzle assembly is located; in this way, the filtered gas is blown by the blowing nozzle assembly to the negative pressure area to make up the pressure of the negative pressure area, realizing blowing protection and isolating the polluted gas from entering the protection space where the wire bonding passes through, thereby ensuring the quality of the wire bonding. Description of the Drawings

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0034] Figure 1 is an axonometric view of the wire bonding protection assembly in an embodiment of the present invention;

[0035] Figure 2 is an axonometric view of the main components of the wire bonding protection assembly in an embodiment of the present invention;

[0036] Figure 3 is Figure 2 a sectional view of;

[0037] Figure 4 is an axonometric view of the air nozzle assembly in an embodiment of the present utility model;

[0038] Figure 5 is an axonometric view of the wire pay-off mechanism in an embodiment of the present utility model;

[0039] Figure 6 is a side view of the wire pay-off mechanism in an embodiment of the present utility model.

[0040] Wherein, 1. wire passing plate; 101. first wire plate; 102. second wire plate; 2. air nozzle assembly; 21. air nozzle main body; 211. first main body; 212. convex part; 22. air nozzle cover; 23. air nozzle inlet joint; 3. blow nozzle assembly; 31. blow nozzle main body; 32. blow nozzle cover; 33. blow nozzle inlet joint; 4. first air chamber; 5. first air outlet channel; 6. second air chamber; 7. second air outlet channel; 8. fixing plate; 9. wire pay-off motor; 10. wire pay-off bracket; 1001. connecting main body; 1002. clamping arm; 11. wire wheel; 12. guide post. Specific embodiments

[0041] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0042] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0043] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0044] An embodiment of the present utility model provides a wire bonding protection assembly. Referring to Figure 1 and Figure 2 , the wire bonding protection assembly includes a wire passing board 1, a gas nozzle assembly 2, and a blowing nozzle assembly 3; a protection space for the wire bonding to pass through is provided on the wire passing board 1; the gas nozzle assembly 2 is installed on the wire passing board 1, and the air outlet of the gas nozzle assembly 2 faces the protection space for blowing air into the protection space; the blowing nozzle assembly 3 is installed on the gas nozzle assembly 2, and the air outlet of the blowing nozzle assembly 3 is arranged opposite to the air outlet of the gas nozzle assembly 2 for supplementing air to the area where the air outlet of the gas nozzle assembly 2 is located.

[0045] As an example, a wire bonding protection assembly is used to protect wire bonds from contamination. Specifically, it includes a wire passing board 1, a nozzle assembly 2, and a blowing nozzle assembly 3. During installation, the wire passing board 1 is provided with a protection space for the wire bond to pass through. Specifically, the wire passing board 1 includes a first wire board 101 and a second wire board 102 arranged opposite to each other, and the first wire board 101 and the second wire board 102 cooperate to form a protection space for the wire bond to pass through. The nozzle assembly 2 is installed on the wire passing board 1, and the air outlet of the nozzle assembly 2 faces the protection space for blowing air into the protection space. When the wire feeding mechanism feeds the wire, the wire bond passes through the protection space, and the gas lifts the wire bond to protect the wire bond, avoiding contamination of the wire bond and ensuring the quality of the wire bond. However, when the nozzle assembly 2 continuously blows air, a negative pressure area will appear around the air outlet due to the too fast air flow velocity. The gas in the environment carries dust into this negative pressure area and adheres to the nozzle assembly 2, resulting in the nozzle assembly 2 being dirty. The air outlet of the nozzle assembly 2 will generate contaminated gas and blow the contaminated gas into the protection space between the first wire board 101 and the second wire board 102, resulting in the contamination of the wire bond and affecting the quality of the wire bond. In this example, the blowing nozzle assembly 3 is installed on the nozzle assembly 2, and the air outlet of the blowing nozzle assembly 3 is arranged opposite to the air outlet of the nozzle assembly 2 for supplementing air to the area where the air outlet of the nozzle assembly 2 is located. In this way, the filtered gas is blown by the blowing nozzle assembly 3 towards the negative pressure area to make up the pressure in the negative pressure area, realizing blowing protection and isolating the contaminated gas from entering the protection space where the wire bond passes through, thereby ensuring the quality of the wire bond. Among them, the nozzle assembly 2 and the blowing nozzle assembly 3 can have unlimited angles, unlimited shapes, unlimited types of blown gas, and unlimited air flow rates; the nozzle assembly 2 and the blowing nozzle assembly 3 can be processed by metal and non-metal materials; the nozzle assembly 2 and the blowing nozzle assembly 3 can perform long-term blowing protection, significantly improving the contamination situation.

[0046] In one embodiment, referring to Figure 2 、 Figure 3 and Figure 4 , the nozzle assembly 2 includes a nozzle body 21, a nozzle cap 22, and a nozzle air inlet joint 23. The nozzle cap 22 is attached to the nozzle body 21 to form a first air chamber 4 and a first air outlet channel 5 communicating with the first air chamber 4. One end of the nozzle air inlet joint 23 is connected to the nozzle body 21 and communicates with the first air chamber 4. The air outlet of the first air outlet channel 5 faces the protection space for blowing air into the protection space.

[0047] As an example, the nozzle assembly 2 includes a nozzle body 21, a nozzle cap 22 and a nozzle air inlet joint 23; during installation, the nozzle cap 22 is fitted and connected to the nozzle body 21, and a first air chamber 4 and a first air outlet channel 5 communicating with the first air chamber 4 can be formed. The first air chamber 4 is used to store gas, and the air outlet of the first air outlet channel 5 faces the protection space and is used to blow air into the protection space. The gas lifts the bonding wire to protect the bonding wire, avoid contamination of the bonding wire, and ensure the quality of the bonding wire. One end of the nozzle air inlet joint 23 is connected to the nozzle body 21 and communicates with the first air chamber 4. Specifically, a first air inlet hole communicating with the first air chamber 4 is provided on the nozzle body 21. One end of the nozzle air inlet joint 23 is installed in the first air inlet hole, and the other end of the nozzle air inlet joint 23 is connected to a hair dryer or other air supply device to deliver gas into the first air chamber 4. Among them, the nozzle cap 22 adopts a thin sheet structure to save costs under the condition of ensuring airtightness.

[0048] In one embodiment, referring to Figure 2 , Figure 3 and Figure 4 , the nozzle body 21 includes a first body 211 and a convex portion 212 extending from the middle of one side surface of the first body 211; a first accommodation groove is provided in the first body 211, and a first diversion groove communicating with the first accommodation groove is provided on the convex portion 212; the first accommodation groove cooperates with the nozzle cap 22 to form the first air chamber 4; the first diversion groove cooperates with the nozzle cap 22 to form the first air outlet channel 5.

[0049] As an example, the shape of the nozzle body 21 is introduced, specifically including the first body 211 and the convex portion 212, and the convex portion 212 extends from the middle of one side surface of the first body 211; the first body 211 and the convex portion 212 can be set in various shapes. For example, the first body 211 is a cuboid and the convex portion 212 is L-shaped. A first accommodation groove is provided in the first body 211, and the first accommodation groove cooperates with the nozzle cap 22 to form the first air chamber 4, and the first air chamber 4 is used to store gas; a first diversion groove communicating with the first accommodation groove is provided on the convex portion 212, and the first diversion groove cooperates with the nozzle cap 22 to form the first air outlet channel 5. The air outlet of the first air outlet channel 5 faces the protection space and is used to blow air into the protection space. The gas lifts the bonding wire to protect the bonding wire, avoid contamination of the bonding wire, and ensure the quality of the bonding wire.

[0050] In one embodiment, referring to Figure 2 , Figure 3 and Figure 4 , a plurality of first diversion grooves are provided, and the plurality of first diversion grooves are arranged in parallel at intervals on the convex portion 212.

[0051] As an example, there are multiple first guide grooves, which are arranged in parallel and spaced apart on the raised portion 212, and can cooperate with the air nozzle cover 22 to form multiple first air outlet channels 5, so that the blowing range of the air nozzle assembly 2 to the protection space is more balanced, thereby improving the protection effect on the welding line.

[0052] In one embodiment, referring to Figure 2 and Figure 3 The nozzle assembly 3 includes a nozzle body 31, a nozzle cover 32 and a nozzle air inlet connector 33. The nozzle cover 32 is fitted and connected to the nozzle body 31 to form a second air chamber 6 and a second air outlet channel 7 connected to the second air chamber 6; one end of the nozzle air inlet connector 33 is connected to the nozzle body 31 and connected to the second air chamber 6; the air outlet of the second air outlet channel 7 is arranged opposite to the air outlet of the air nozzle assembly 2, so as to replenish air to the area where the air outlet of the air nozzle assembly 2 is located.

[0053] As an example, the nozzle assembly 3 includes a nozzle body 31, a nozzle cover 32 and a nozzle air inlet connector 33; when installed, the nozzle cover 32 is fitted and connected to the nozzle body 31 to form a second air chamber 6 and a second air outlet channel 7 connected to the second air chamber 6. The second air chamber 6 is used to store filtered gas, and the air outlet of the second air outlet channel 7 is arranged relative to the air outlet of the air nozzle assembly 2, and is used to replenish air to the area where the air outlet of the air nozzle assembly 2 is located. In this way, the filtered gas is blown to the area where the air outlet of the air nozzle assembly 2 is located, that is, the negative pressure area, through the nozzle assembly 3, and the pressure of the negative pressure area is compensated to achieve blowing protection, isolate the polluted gas from entering the protective space through which the welding line passes, thereby ensuring the quality of the welding line. One end of the nozzle air inlet connector 33 is connected to the nozzle body 31 and communicated with the second air chamber 6. Specifically, a second air inlet hole communicated with the second air chamber 6 is provided on the nozzle body 31. One end of the nozzle air inlet connector 33 is installed in the second air inlet hole, and the other end of the nozzle air inlet connector 33 is connected to a hair dryer or other air delivery equipment to deliver the filtered gas into the second air chamber 6. The nozzle cover 32 adopts a thin sheet structure, which saves costs while ensuring air tightness.

[0054] In one embodiment, referring to Figure 2 and Figure 3 The mouthpiece body 31 includes a second body; a second accommodating groove is provided in the second body, and a second guide groove connected to the second accommodating groove is provided on the second body; the second accommodating groove cooperates with the mouthpiece cover 32 to form a second air chamber 6; the second guide groove cooperates with the mouthpiece cover 32 to form a second air outlet channel 7.

[0055] As an example, the shape of the nozzle body 31 is introduced. Specifically, it includes a second body, and the second body can be set in various shapes, such as a cuboid. A second accommodation groove is provided in the second body, and the second accommodation groove cooperates with the nozzle cap 32 to form a second air chamber 6 for storing filtered gas. A second diversion groove communicating with the second accommodation groove is provided on the second body, and the second diversion groove cooperates with the nozzle cap 32 to form a second air outlet channel 7. The air outlet of the second air outlet channel 7 is arranged opposite to the air outlet of the nozzle assembly 2 for supplementing air to the area where the air outlet of the nozzle assembly 2 is located. In this way, when the air outlet of the nozzle assembly 2 blows air to protect the bonding wire, the gas in the area where the air outlet of the nozzle assembly 2 is located will be lost, forming a negative pressure area. At this time, the gas in other areas will flow towards the negative pressure area, and the filtered gas is blown by the nozzle assembly 3 towards the area where the air outlet of the nozzle assembly 2 is located, that is, the negative pressure area, to make up the pressure of the negative pressure area, realize air blowing protection, isolate the contaminated gas from entering the protection space where the bonding wire passes, and thus ensure the quality of the bonding wire.

[0056] In one embodiment, referring to Figure 2 and Figure 3 , a plurality of second diversion grooves are provided, and the plurality of second diversion grooves are arranged in parallel at intervals on the second body.

[0057] As an example, a plurality of second diversion grooves are provided, and the plurality of second diversion grooves are arranged in parallel at intervals on the second body, which can cooperate with the nozzle cap 32 to form a plurality of second air outlet channels 7, so that the air blowing range for the nozzle assembly 3 to supplement air to the area where the air outlet of the nozzle assembly 2 is located is more balanced.

[0058] The embodiment of the present utility model provides a wire pay-off mechanism. Referring to Figure 5 and Figure 6 , it includes a fixing plate 8, a wire pay-off motor 9, a wire pay-off bracket 10, a wire wheel 11 and a bonding wire protection assembly; the wire pay-off motor 9 is fixed on the fixing plate 8, the wire pay-off bracket 10 is fixed on the output shaft of the wire pay-off motor 9, and the wire wheel 11 is installed on the wire pay-off bracket 10; the wire passing plate 1 of the bonding wire protection assembly is installed on the fixing plate 8 for the bonding wire to pass through.

[0059] As an example, the wire pay-off mechanism includes a fixed plate 8, a wire pay-off motor 9, a wire pay-off bracket 10, a wire wheel 11 and a wire bonding protection assembly. During installation, the wire pay-off motor 9 is fixed on the fixed plate 8, the wire pay-off bracket 10 is fixed on the output shaft of the wire pay-off motor 9, and the wire wheel 11 is installed on the wire pay-off bracket 10. In this way, by controlling the rotation of the wire pay-off motor 9, the wire pay-off bracket 10 can be driven to rotate, and then the wire wheel 11 can be driven to rotate, so as to realize the pay-off of the wire bonding wound on the wire wheel 11. The wire bonding protection assembly is used to protect the wire bonding and prevent it from being contaminated. Specifically, it includes a wire passing plate 1, a gas nozzle assembly 2 and a blowing nozzle assembly 3. During installation, a protection space for the wire bonding to pass through is provided on the wire passing plate 1. Specifically, the wire passing plate 1 includes a first wire plate 101 and a second wire plate 102 arranged oppositely, and the first wire plate 101 and the second wire plate 102 cooperate to form a protection space for the wire bonding to pass through. In the wire pay-off mechanism, the wire passing plate 1 is installed on the fixed plate 8 for the wire bonding to pass through, the gas nozzle assembly 2 is installed on the wire passing plate 1, and the air outlet of the gas nozzle assembly 2 faces the protection space and is used to blow air into the protection space. When the wire pay-off mechanism pays off the wire, the wire bonding passes through the protection space, and the gas lifts the wire bonding to achieve the function of protecting the wire bonding, preventing the wire bonding from being contaminated and ensuring the quality of the wire bonding. However, when the gas nozzle assembly 2 continuously blows air, a negative pressure area will appear around the air outlet due to the too fast air flow velocity. The gas in the environment carries dust into this negative pressure area and adheres to the gas nozzle assembly 2, resulting in the dirtiness of the gas nozzle assembly 2. The air outlet of the gas nozzle assembly 2 will generate polluted gas and blow the polluted gas into the protection space between the first wire plate 101 and the second wire plate 102, resulting in the contamination of the wire bonding and affecting the quality of the wire bonding. In this example, the blowing nozzle assembly 3 is installed on the gas nozzle assembly 2, and the air outlet of the blowing nozzle assembly 3 is arranged opposite to the air outlet of the gas nozzle assembly 2 and is used to supplement air to the area where the air outlet of the gas nozzle assembly 2 is located. In this way, the filtered gas is blown by the blowing nozzle assembly 3 to the negative pressure area to make up the pressure of the negative pressure area, realize the blowing protection, isolate the polluted gas from entering the protection space where the wire bonding passes through, and thus ensure the quality of the wire bonding. Among them, the gas nozzle assembly 2 and the blowing nozzle assembly 3 can have unlimited angles, unlimited shapes, unlimited types of blown gas, and unlimited gas flow rates; the gas nozzle assembly 2 and the blowing nozzle assembly 3 can be processed by metal and non-metal materials; the gas nozzle assembly 2 and the blowing nozzle assembly 3 can carry out long-term blowing protection, significantly improving the pollution situation. Among them, an induction optical fiber is provided on the wire passing plate 1. When the wire bonding machine is working, the wire pay-off mechanism needs to continuously supply the wire bonding (i.e., the metal wire). When the wire bonding is tightened, the induction optical fiber will be triggered, and at this time, the wire pay-off motor 9 rotates, and the whole process continuously supplies the wire.

[0060] In one embodiment, referring to Figure 5 , the wire pay-off mechanism further includes a guide post 12, and the guide post 12 is installed on the fixed plate 8 and is used to guide the wire bonding.

[0061] As an example, the wire pay-off mechanism further includes a guide post 12. During installation, the guide post 12 is installed on the fixed plate 8, located between the wire pay-off bracket 10 and the wire passing plate 1, and can guide the bonding wire to prevent the bonding wire from being wound and bent.

[0062] In one embodiment, referring to Figure 5 , the wire pay-off bracket 10 includes a connecting body 1001 and a clamping arm 1002 extending from one end of the connecting body 1001 along the axis direction of the output shaft of the wire pay-off motor 9; the connecting body 1001 is installed on the output shaft of the wire pay-off motor 9; the wire reel 11 is sleeved on the clamping arm 1002.

[0063] As an example, the wire pay-off bracket 10 includes a connecting body 1001 and a clamping arm 1002; the clamping arm 1002 extends from one end of the connecting body 1001 along the axis direction of the output shaft of the wire pay-off motor 9; during installation, the connecting body 1001 is installed on the output shaft of the wire pay-off motor 9, and the wire reel 11 is sleeved on the clamping arm 1002. By using the deformation ability of the clamping arm 1002, it is convenient to install the wire reel 11 on the wire pay-off bracket 10; the wire pay-off motor 9 drives the wire pay-off bracket 10 to rotate, which can drive the wire reel 11 to rotate to achieve the wire pay-off function. Among them, the clamping arm 1002 can be set as a whole annular part, or can be set as at least two, and at least two clamping arms 1002 are arranged at intervals in a ring shape.

[0064] The embodiment of the present utility model provides a wire bonding machine, which includes a wire pay-off mechanism.

[0065] As an example, the wire pay-off mechanism includes a fixing plate 8, a wire pay-off motor 9, a wire pay-off bracket 10, a wire wheel 11 and a wire bonding protection assembly; during installation, the wire pay-off motor 9 is fixed on the fixing plate 8, the wire pay-off bracket 10 is fixed on the output shaft of the wire pay-off motor 9, and the wire wheel 11 is installed on the wire pay-off bracket 10. In this way, by controlling the rotation of the wire pay-off motor 9, the wire pay-off bracket 10 can be driven to rotate, thereby driving the wire wheel 11 to rotate, and realizing the pay-off of the wire bonding wound on the wire wheel 11. The wire bonding protection assembly is used to protect the wire bonding and prevent it from being contaminated. Specifically, it includes a wire passing plate 1, a gas nozzle assembly 2 and a blowing nozzle assembly 3; during installation, the wire passing plate 1 is provided with a protection space for the wire bonding to pass through. Specifically, the wire passing plate 1 includes a first wire plate 101 and a second wire plate 102 arranged oppositely, and the first wire plate 101 and the second wire plate 102 cooperate to form a protection space for the wire bonding to pass through. In the wire pay-off mechanism, the wire passing plate 1 is installed on the fixing plate 8 for the wire bonding to pass through, the gas nozzle assembly 2 is installed on the wire passing plate 1, and the air outlet of the gas nozzle assembly 2 faces the protection space for blowing air into the protection space; when the wire pay-off mechanism pays off the wire, the wire bonding passes through the protection space, and the gas lifts the wire bonding to achieve the function of protecting the wire bonding, preventing the wire bonding from being contaminated and ensuring the quality of the wire bonding. However, when the gas nozzle assembly 2 blows air continuously, a negative pressure area will appear around the air outlet due to the too fast air flow velocity, and the gas in the environment carries dust into this negative pressure area and adheres to the gas nozzle assembly 2, resulting in the dirt of the gas nozzle assembly 2. The air outlet of the gas nozzle assembly 2 will generate polluted gas and blow the polluted gas into the protection space between the first wire plate 101 and the second wire plate 102, resulting in the contamination of the wire bonding and affecting the quality of the wire bonding. In this example, the blowing nozzle assembly 3 is installed on the gas nozzle assembly 2, and the air outlet of the blowing nozzle assembly 3 is arranged opposite to the air outlet of the gas nozzle assembly 2 for supplementing air to the area where the air outlet of the gas nozzle assembly 2 is located; in this way, the filtered gas is blown by the blowing nozzle assembly 3 to the negative pressure area to make up the pressure of the negative pressure area, realizing the blowing protection and isolating the polluted gas from entering the protection space where the wire bonding passes through, thereby ensuring the quality of the wire bonding. Among them, the gas nozzle assembly 2 and the blowing nozzle assembly 3 can have unlimited angles, unlimited shapes, unlimited types of blown gas, and unlimited gas flow rates; the gas nozzle assembly 2 and the blowing nozzle assembly 3 can be processed by metal and non-metal materials; the gas nozzle assembly 2 and the blowing nozzle assembly 3 can carry out long-term blowing protection, significantly improving the pollution situation.

[0066] The above-described embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A wire bonding protection assembly, characterized in that, It includes a wire passing board, a nozzle assembly and a blowing nozzle assembly; A protection space for the welding wire to pass through is provided on the wire passing board; The nozzle assembly is installed on the wire passing board, and the air outlet of the nozzle assembly faces the protection space for blowing air into the protection space; The blowing nozzle assembly is installed on the nozzle assembly, and the air outlet of the blowing nozzle assembly is arranged opposite to the air outlet of the nozzle assembly for supplementing air to the area where the air outlet of the nozzle assembly is located.

2. The wire bonding protection assembly according to claim 1, wherein The nozzle assembly includes a nozzle body, a nozzle cover and a nozzle air inlet joint. The nozzle cover is fitted and connected to the nozzle body to form a first air chamber and a first air outlet channel communicating with the first air chamber; One end of the nozzle air inlet joint is connected to the nozzle body and communicates with the first air chamber; The air outlet of the first air outlet channel faces the protection space for blowing air into the protection space.

3. The wire bonding protection assembly according to claim 2, characterized in that, The nozzle body includes a first body and a convex portion extending from the middle of one side surface of the first body; A first accommodation groove is provided in the first body, and a first diversion groove communicating with the first accommodation groove is provided on the convex portion; The first accommodation groove cooperates with the nozzle cover to form the first air chamber; The first diversion groove cooperates with the nozzle cover to form the first air outlet channel.

4. The wire bonding protection assembly according to claim 3, wherein The first diversion grooves are provided in plurality, and the plurality of first diversion grooves are arranged in parallel at intervals on the convex portion.

5. The wire bonding protection assembly according to claim 1, characterized in that, The blowing nozzle assembly includes a blowing nozzle body, a blowing nozzle cover and a blowing nozzle air inlet joint. The blowing nozzle cover is fitted and connected to the blowing nozzle body to form a second air chamber and a second air outlet channel communicating with the second air chamber; One end of the blowing nozzle air inlet joint is connected to the blowing nozzle body and communicates with the second air chamber; The air outlet of the second air outlet channel is arranged opposite to the air outlet of the nozzle assembly for supplementing air to the area where the air outlet of the blowing nozzle assembly is located.

6. The wire bonding protection assembly according to claim 5, wherein, The blowing nozzle body includes a second body; A second accommodation groove is provided in the second body, and a second diversion groove communicating with the second accommodation groove is provided on the second body; The second accommodation groove cooperates with the blowing nozzle cover to form the second air chamber; The second diversion groove cooperates with the blowing nozzle cover to form the second air outlet channel.

7. The wire bonding protection assembly according to claim 6, characterized in that, The second diversion grooves are provided in plurality, and the plurality of second diversion grooves are arranged in parallel at intervals on the second body.

8. A wire pay-off mechanism, characterized in that, It includes a fixing plate, a wire paying-off motor, a wire paying-off bracket, a wire wheel and the welding wire protection assembly according to any one of claims 1-7; The wire paying-off motor is fixed on the fixing plate, the wire paying-off bracket is fixed on the output shaft of the wire paying-off motor, and the wire wheel is installed on the wire paying-off bracket; The wire passing board of the welding wire protection assembly is installed on the fixing plate for the welding wire to pass through.

9. The wire pay-off mechanism according to claim 8, wherein, The wire paying-off mechanism further includes a guide post installed on the fixing plate for guiding the welding wire.

10. The wire pay-off mechanism according to claim 8, characterized in that, The wire paying-off bracket includes a connecting body and a clamping arm extending from one end of the connecting body in a direction perpendicular to the connecting body; The connecting body is installed on the output shaft of the wire paying-off motor; The wire wheel is sleeved on the clamping arm.

11. A wire bonding machine, characterized in that, It includes the wire paying-off mechanism according to any one of claims 8-10.

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