Suction nozzle mounting device

Abstract

The invention provides a suction nozzle mounting device. The suction nozzle mounting device comprises a containing groove and a limiting piece. The containing groove is provided with a containing groove opening used for containing the suction nozzle. The limiting part is movably arranged on the containing groove, can be located at the suction nozzle fixing position and can move away from the suction nozzle fixing position, when the limiting part is located at the suction nozzle fixing position, the suction nozzle can be fixed in the suction nozzle containing groove, and when the limiting part moves away from the suction nozzle fixing position, the suction nozzle can move out of the containing groove or be placed in the containing groove from an opening of the containing groove. The device is provided with the containing groove capable of containing the suction nozzle and the limiting piece, when the suction nozzle is installed, the suction nozzle can be arranged in the containing groove and fixed through the limiting piece, and then the suction nozzle and the suction nozzle rod can be assembled. When the suction nozzle mounting device is used for mounting the suction nozzle, the suction nozzle does not need to be directly touched by a hand, so that the suction nozzle is prevented from being contaminated by foreign matters when the hand touches the suction nozzle, and the risk of pollution or damage to structures such as a chip caused by the foreign matters on the surface of the suction nozzle is reduced.

Description

Technical Field

[0001] The present application relates to the field of semiconductor technology, and in particular to a nozzle mounting device. Background Art

[0002] During the packaging and testing process of semiconductor products such as power devices, the nozzles used to suck up structures such as bare chips are generally wear-resistant, smooth-surfaced, and have a hole in the middle. Taking the suction of chips as an example, the vacuum of the equipment is opened through the nozzle. When the nozzle contacts the chip, the vacuum suction force acts on the surface of the semiconductor structure through the nozzle, sucking up the chip and sticking it on the base island of the lead frame. The nozzle generally has to perform repetitive suction operations. The nozzle will wear out with continuous use, and the worn nozzle needs to be replaced. In the related art, when replacing the nozzle, the nozzle is generally directly taken by hand for replacement. For example, when installing the nozzle, one hand is generally used to clamp the nozzle, and the other hand is used to push up against the suction surface of the nozzle so that the nozzle and the nozzle rod are completely connected. When installing the nozzle, the hand will touch the nozzle, which makes it extremely easy for the nozzle to be contaminated with foreign matter and contaminate the nozzle. The product in the operation has the risk of crushing the chip or contaminating the chip surface. Summary of the invention

[0003] The embodiment of the present application provides a nozzle installation device, which includes:

[0004] A receiving groove having a receiving groove opening for receiving a suction nozzle;

[0005] A limiting member is movably provided on the accommodating groove, can be located at a nozzle fixing position and can be moved away from the nozzle fixing position. When the limiting member is located at the nozzle fixing position, the nozzle can be fixed in the nozzle accommodating groove. When the limiting member is moved away from the nozzle fixing position, the nozzle can be moved out of the accommodating groove or placed in the accommodating groove from an opening of the accommodating groove.

[0006] In some embodiments, the limiting member is movably disposed in the accommodating groove.

[0007] In some embodiments, the receiving groove has a bottom wall and a side wall surrounding one side of the bottom wall, and the side wall is provided with an opening;

[0008] The nozzle installation device includes a driving rod connected to the limiting member, the driving rod is inserted into the opening, one end of the driving rod is fixedly connected to the limiting member, and the other end is located outside the side wall of the accommodating groove, and the driving rod can move inward and outward along the opening; when the driving rod moves inward and outward along the opening, the limiting member can be located in the nozzle fixing position and can be moved away from the nozzle fixing position.

[0009] In some embodiments, the driving rod and the limiting member are detachably connected.

[0010] In some embodiments, the nozzle mounting device further comprises a hollow connecting rod having a receiving cavity therein, one end of the connecting rod is fixed to the opening, and the receiving cavity is communicated with the receiving groove;

[0011] At least a portion of the driving rod is disposed in the accommodating cavity.

[0012] In some embodiments, the connecting rod is provided with a sliding hole located at the side and extending along the length direction of the connecting rod;

[0013] The suction nozzle installation device includes an operating rod, which is partially inserted into the sliding hole, with one end of the operating rod exposed and the other end connected to the driving rod; when the operating rod is subjected to an external force toward the accommodating groove or an external force away from the accommodating groove, the operating rod can move toward or away from the accommodating groove along the length direction of the connecting rod, and drive the driving rod to move inward and outward along the opening.

[0014] In some embodiments, the sliding hole is provided in the middle area of ​​the operating rod; and / or,

[0015] In some embodiments, the length of the connecting rod is 10 cm-20 cm.

[0016] In some embodiments, a blocking member is provided at one end of the connecting rod away from the receiving groove, for blocking the end of the receiving cavity away from the receiving groove;

[0017] The blocking member is detachable;

[0018] The blocking piece is a T-shaped screw, and the connecting rod is provided with an internal thread that matches the T-shaped screw.

[0019] In some embodiments, an elastic member is provided in the accommodating cavity and is located between the driving rod and the blocking member;

[0020] The elastic member can provide an elastic force to the driving rod toward one side of the accommodating groove. When no suction nozzle is provided in the accommodating groove, the elastic force provided by the elastic member to the driving rod can enable the driving rod to drive the limiting member to be located in an initial position. When the limiting member is located in the initial position, the limiting member abuts against the side wall of the accommodating groove that is away from the opening.

[0021] In some embodiments, the depth of the receiving groove is 0.7 cm-1.5 cm.

[0022] The main technical effects achieved by the embodiments of the present application are:

[0023] The nozzle installation device provided in the embodiment of the present application is configured to have a receiving groove and a stopper capable of receiving the nozzle. When installing the nozzle, the nozzle can be placed in the receiving groove and fixed in the receiving groove by the stopper, and then the nozzle and the nozzle rod can be assembled. When the nozzle installation device is used to install the nozzle, there is no need to directly touch the nozzle with the hand, which avoids the nozzle being contaminated with foreign matter due to hand contact with the nozzle, and helps to reduce the risk of contamination or damage to the chip and other structures caused by foreign matter on the surface of the nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a cross-sectional view of a nozzle mounting device provided by an exemplary embodiment of the present application; wherein the limiting member is located at an initial position;

[0025] Figure 2 yes Figure 1 A top view of a portion of the structure of the nozzle mounting device shown; Figure 2 To illustrate the bottom wall of the receiving groove;

[0026] Figures 3 to 8 is a partial process diagram of a nozzle installation device provided by an exemplary embodiment of the present application for installing a nozzle; wherein, Figure 3 It indicates that the limiter moves to a position away from the initial position. Figure 4 The nozzle is placed in the receiving groove. Figure 5 The stopper is in a fixed position to fix the nozzle. Figure 6 Indicates the nozzle installation device and the nozzle moving toward the nozzle rod for installation, Figure 7 It shows that the nozzle rod is connected to the nozzle. Figure 8 It indicates that the nozzle rod together with the nozzle is moved out of the receiving groove. DETAILED DESCRIPTION

[0027] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0028] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms of "a", "said" and "the" used in this application and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0029] It should be understood that although the terms first, second, third, etc. may be used in the present application to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0030] Some embodiments of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0031] An embodiment of the present application provides a nozzle installation device. The nozzle installation device includes a receiving groove and a limiting member. The receiving groove has a receiving groove opening for accommodating a nozzle. The limiting member is movably arranged on the receiving groove, can be located at a nozzle fixing position and can be moved away from the nozzle fixing position. When the limiting member is located at the nozzle fixing position, the nozzle can be fixed in the nozzle receiving groove. When the limiting member is moved away from the nozzle fixing position, the nozzle can be moved out of the receiving groove or placed in the receiving groove from the receiving groove opening. The nozzle installation device is configured to have a receiving groove and a limiting member capable of accommodating a nozzle. When installing the nozzle, the nozzle can be set in the receiving groove and fixed in the receiving groove by the limiting member, and then the nozzle can be assembled with the nozzle rod. When using the nozzle installation device to install the nozzle, there is no need to touch the nozzle directly with hands, which avoids the nozzle being contaminated with foreign matter due to hand contact, and helps reduce the risk of contamination or damage to structures such as chips caused by foreign matter on the surface of the nozzle.

[0032] The following is combined with Figures 1 to 7 , the nozzle installation device provided in this application is described in detail.

[0033] Please refer to Figure 1 , and when necessary, combine Figures 2 to 7 As shown, a nozzle installation device 100 includes a receiving groove 101 and a limiting member 20. The receiving groove 101 has a receiving groove opening 1001 for receiving the nozzle 200.

[0034] The limiting member 20 is movably provided on the accommodating groove 101, and can be located at the nozzle fixing position and can be moved away from the nozzle fixing position. When the limiting member 20 is located at the nozzle fixing position, the nozzle 200 can be fixed in the nozzle 200 accommodating groove 101. When the limiting member 20 is moved away from the nozzle fixing position, the nozzle 200 can be moved out of the accommodating groove 101 or placed in the accommodating groove 101 from the accommodating groove opening 1001.

[0035] Here, the limiting member 20 is movably disposed on the receiving groove 101. Figure 1 It is shown as being located inside the receiving groove 101. In some other embodiments, it may also be located at the opening of the receiving groove or outside the opening of the receiving groove.

[0036] The nozzle fixing position mentioned here is a position that can fix the nozzle in the receiving groove 101. In this nozzle fixing position, the stopper can be pressed against the nozzle to press the nozzle against the groove wall of the receiving groove 101. The nozzle fixing position is determined according to the size of the nozzle 200.

[0037] like Figure 1 As shown, in some embodiments, the limiting member 20 is movably disposed in the receiving groove 101 .

[0038] In some embodiments, the receiving groove 101 has a bottom wall 11 and a side wall surrounding one side of the bottom wall 11 , and an opening 1002 is formed on the side wall.

[0039] Taking the rectangular cross section of the receiving groove 101 as an example, the side wall of the receiving groove 101 includes a side wall 12, a side wall 13, a side wall 14 and a side wall 15. The side wall 12, the side wall 14, the side wall 13 and the side wall 15 are sequentially connected end to end to form an annular side wall, which is arranged on one side of the bottom wall 11 to form the receiving groove 101. Among them, the side wall 13 is provided with an opening 1002.

[0040] The nozzle installation device 100 includes a driving rod 30 connected to the stopper 20. The driving rod 30 is inserted into the opening 1002, one end of the driving rod 30 is fixedly connected to the stopper 20, and the other end is located outside the side wall of the receiving groove 101, and the driving rod 30 can move inward and outward along the opening 1002. When the driving rod 30 moves inward and outward along the opening 1002, the stopper 20 can be located at the nozzle fixing position and can be moved away from the nozzle fixing position.

[0041] like Figure 1As shown, the driving rod 30 has a first end 301 and a second end 302 which are separated from each other. The first end of the driving rod 30 is fixedly connected to the stopper 20. The second end 302 of the driving rod 30 is located outside the side wall of the receiving groove 101.

[0042] Here, the driving rod 30 moves inward along the opening 1002, which means that the driving rod 30 moves in the first direction x toward the direction close to the side wall 12, that is, more of the driving rod 30 is located in the receiving groove 101. Correspondingly, the driving rod 30 moves outward along the opening 1002, which means that the driving rod 30 moves in the first direction x toward the direction away from the side wall 12, that is, the driving rod 30 passes through the opening 1002 and moves out of the receiving groove 101.

[0043] In some embodiments, the driving rod 30 and the limiting member 20 are detachably connected to facilitate assembly, disassembly, replacement, and maintenance of the driving rod 30 and the limiting member 20 .

[0044] The driving rod 30 and the limiting member 20 can be fixed together by means of threaded fitting, the connection method is simple, the two are easy to assemble and disassemble, and there is no other additional connection structure, which is conducive to cost saving.

[0045] The drive rod 30 and the stopper 20 are preferably fixed together by threaded engagement. Of course, in other embodiments, the drive rod 30 and the stopper 20 may be made of other materials, such as PVC, or may be fixedly connected by other connection methods, such as snap fit.

[0046] In other embodiments, the stopper 20 is made of a flexible material, such as flexible PVC or rubber. When the stopper 20 is made of a flexible material, it can flexibly contact the suction nozzle 200 when fixing the suction nozzle 200, and then press the suction nozzle 200 to fix the suction nozzle 200, which is beneficial to protect the suction nozzle 200 from damage.

[0047] In some embodiments, the nozzle installation device 100 further includes a hollow connecting rod 40. The connecting rod 40 has an accommodating cavity 401 extending along the length direction L of the connecting rod. One end of the connecting rod 40 is fixed to the opening 1002, and the accommodating cavity 401 is connected to the accommodating groove 101. At least a portion of the driving rod 30 is disposed in the accommodating cavity 401.

[0048] For example, the connecting rod 40 has a first end 402 and a second end 403 that are separated from each other. The first end 402 of the connecting rod 40 is fixed at the opening 1002. The accommodating cavity 401 has an opening 4001 located at the first end 402 of the connecting rod 40 and another opening 4002 located at the second end 403 of the connecting rod 40.

[0049] like Figure 1 As shown, the internal accommodation cavity 401 of the connecting rod 40 is connected to the accommodation groove 101 through an opening 4001 located at the first end 402 of the connecting rod 40. The driving rod 30 is mainly arranged in the accommodation cavity 401 and can move along the length direction L of the connecting rod.

[0050] The connecting rod 40 and the side walls of the receiving groove 101 (such as the side walls 12, 13, 14, and 15) mentioned here can be made of metal, such as stainless steel. The connecting rod 40 can be welded and fixed to the side walls 13 of the receiving groove 101. Of course, the bottom wall 11 of the receiving groove 101 can also be made of the same material as the side walls. Optionally, the bottom wall 11 and the side walls of the receiving groove 101 can be integrally formed.

[0051] Here, the length direction L of the connecting rod may be parallel to the first direction x.

[0052] In some embodiments, the connecting rod 40 is provided with a sliding hole 4003 located at the side and extending along the length direction L of the connecting rod 40 .

[0053] Here, the connecting rod 40 may have a peripheral side wall, and the peripheral side wall encloses the internal accommodation cavity 401. The side mentioned here may be a sliding hole provided on the peripheral side wall of the connecting rod 40.

[0054] For example, Figure 2 As shown, the sliding hole 4003 can be arranged on the top of the peripheral side wall of the connecting rod 40. Figure 2 The third direction Z may be perpendicular to the first direction X, or there may be other non-zero angles between the two. Similarly, the third direction Z may be perpendicular to the second direction Y, or there may be other non-zero angles between the two.

[0055] like Figure 1 As shown, the dimension of the sliding hole 4003 extending along the length direction L of the connecting rod 40 may be smaller than the length dimension of the connecting rod 40. Of course, in some other embodiments, the sliding hole may also extend along the length direction of the entire connecting rod.

[0056] The suction nozzle installation device 100 includes an operating rod 50, which is partially inserted into the sliding hole 4003, with one end of the operating rod 50 exposed and the other end connected to the driving rod 30; when the operating rod 50 is subjected to an external force in the direction toward the accommodating groove 101 or an external force away from the accommodating groove 101, it can move toward or away from the accommodating groove 101 along the length direction of the connecting rod 40, and drive the driving rod 30 to move inward and outward along the opening 1002.

[0057] The operating rod 50 may be an operating handle, with a smooth operating head at the outer end, so that the user can perform manual pushing operation directly with one hand.

[0058] Of course, the operating rod may also be in other structural forms and may be driven by other driving structures.

[0059] In some embodiments, the length of the connecting rod 40 is 10 cm-20 cm, so that the operator can hold it easily, or other structures can be used for clamping.

[0060] The preferred length of the connecting rod 40 may be 14 cm to 16 cm, for example, 15 cm is convenient for the operator to hold it with one hand and operate the operating rod 50 with the same hand, thereby achieving single-handed installation of the suction nozzle 200.

[0061] In some embodiments, the sliding hole 4003 is disposed in the middle area of ​​the operating rod 50 so that the operator can better operate the operating rod 50 when operating with one hand.

[0062] Preferably, the sliding hole 4003 is provided in the middle area of ​​the operating rod 50 , or in the area of ​​the middle area close to one side of the accommodating groove, so that the hand holding the connecting rod 40 can operate the operating rod 50 more easily.

[0063] In some embodiments, a blocking member 60 is provided at one end of the connecting rod 40 away from the accommodating groove 101 , for blocking the end of the accommodating cavity 401 away from the accommodating groove 101 .

[0064] In some embodiments, the blocking member 60 is detachable to facilitate disassembly, assembly and replacement of the driving rod 30 .

[0065] In some embodiments, the blocking member 60 is a T-shaped screw, and the connecting rod 40 is provided with an internal thread that cooperates with the T-shaped screw, which has a simple structure and is convenient for disassembly and assembly.

[0066] It should be noted that the blocking member may also be of other structures.

[0067] In some embodiments, an elastic member 70 is disposed in the accommodating cavity 401 and is located between the driving rod 30 and the blocking member 60 .

[0068] The elastic member 70 can provide an elastic force to the driving rod 30 toward the side of the accommodating groove 101. When the suction nozzle 200 is not provided in the accommodating groove 101, the elastic force provided by the elastic member 70 to the driving rod 30 can enable the driving rod 30 to drive the limiting member 20 to be located in the initial position. When the limiting member 20 is located in the initial position, the limiting member 20 abuts against the side wall of the accommodating groove 101 which is away from the opening 1002.

[0069] like Figure 1As shown, in some embodiments, the elastic member 70 is a compression spring. The two ends of the compression spring can be respectively sleeved on the second end 302 of the driving rod 30, and the T-shaped screw is located in the accommodating cavity 401 and faces one end of the driving rod 30, so that the compression spring can better provide elastic force.

[0070] Please continue to refer to Figure 1 As shown, when the stopper 20 is in the initial position, the stopper 20 abuts against the side wall 12 of the receiving groove 101 away from the hole 1002. In this state, the driving rod 30 is subjected to the elasticity of the elastic member 70 in the opposite direction of the first direction X, and pushes the stopper 20 against the side wall 12. On the packaging and testing production line, the distance between the nozzle rod and the operating platform where the lead frame, chip, etc. are set is limited. Manual disassembly and assembly of the nozzle is bound to have certain operating difficulties. The depth of the receiving groove 101 can be set within a certain size to control the height size of the nozzle installation device, that is, Figure 1 The dimensions in the second direction Y shown are convenient for installing the suction nozzle.

[0071] In some embodiments, the depth of the receiving groove 101 is 0.7 cm-1.5 cm, so as to better control the height dimension of the nozzle mounting device.

[0072] Here, the first direction X and the second direction Y are perpendicular to each other, or there is another non-zero angle between them.

[0073] Based on the above description, please combine Figures 3 to 8 As shown, when the nozzle installation device 100 is used to install the nozzle, the operator can first hold the connecting rod 40, and at the same time, the hand holding the connecting rod 40 (such as the thumb or other fingers) can be used to apply a force along the first direction X to the operating rod 50, so that the driving rod 30 and the limiting member 20 move along the first direction X to the position as shown in FIG. Figure 3 The position shown in the figure (or other positions where the suction nozzle can be set). Figure 3 When the position is shown, the distance between the stopper 20 and the side wall 12 is greater than the size of the nozzle in this direction. Then, a tool (such as a clamp such as tweezers) can be used to place the nozzle 200 in the receiving groove 101. Figure 4 After the suction nozzle 200 is placed, the force applied to the operating rod 50 along the first direction X can be reduced or the operating rod 50 can be released, so that the driving rod 30 can drive the limiting member 20 to abut against the suction nozzle 200 under the force provided by the elastic member 70 in the opposite direction of the first direction X, and the suction nozzle 200 is clamped between the side wall 12 and the limiting member 20 and fixed, as shown in FIG. Figure 5 As shown. Figure 5 In the embodiment, the position of the stopper 20 is the corresponding nozzle fixing position. Figure 6As shown, the nozzle installation device 100 with the nozzle 200 fixed thereon is moved below the nozzle rod 300 and moved toward the nozzle rod 300. Figure 7 As shown, the nozzle rod 300 is further buckled with the nozzle 200. Figure 8 As shown, a force is further applied to the operating rod 50 in the first direction X, so that the driving rod 30 moves in the first direction X, driving the stopper 20 to move in the first direction X, and moving away from the fixed position of the suction nozzle. At this time, the suction nozzle 200 is movable in the receiving groove 101, and the suction nozzle installation device 100 is continuously moved in the opposite direction of the second direction Y to be moved away. At this point, the installation of the suction nozzle 200 is completed.

[0074] Here, the suction nozzle 200 has a slot 201 , and the suction nozzle rod 300 has an inserting portion 310 that matches with the slot 201 .

[0075] It should be noted that the nozzle installation device 100 can also be used to remove the nozzle 200 on the nozzle rod 300. When removing, the operating rod 50 of the nozzle installation device 100 can be moved to the position as shown in FIG. Figure 3 The nozzle mounting device 100 is moved to the position shown in the figure, and the nozzle 200 is positioned in the receiving groove 101, and the force applied to the operating rod 50 is reduced, so that the driving rod 30 drives the stopper to abut against the nozzle 200 under the elastic force of the elastic member 70, thereby fixing the nozzle 200. The nozzle mounting device 100 is then moved toward the side away from the nozzle rod 300, so that the nozzle 200 can be removed from the nozzle rod 300.

[0076] It should also be noted that the limiting member can also be movably disposed on the receiving groove in other ways. In some other embodiments, the limiting member 20 can be movably disposed in the receiving groove or at the opening of the receiving groove in other ways such as rotation or detachability. For example, the limiting member can be disposed at the opening of the receiving groove in a rotational manner.

[0077] It should be noted that in the accompanying drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. It is also understood that when an element or layer is referred to as being "on" another element or layer, it may be directly on the other element, or there may be an intermediate layer. In addition, it is understood that when an element or layer is referred to as being "under" another element or layer, it may be directly under the other element, or there may be more than one intermediate layer or element. In addition, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it may be the only layer between the two layers or two elements, or there may also be more than one intermediate layer or element. Similar reference numerals throughout the text indicate similar elements.

[0078] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the disclosure disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0079] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A nozzle installation device, characterized in that: include: A receiving groove having a receiving groove opening for receiving a suction nozzle; A limiting member is movably provided on the accommodating groove, can be located at a nozzle fixing position and can be moved away from the nozzle fixing position. When the limiting member is located at the nozzle fixing position, the nozzle can be fixed in the nozzle accommodating groove. When the limiting member is moved away from the nozzle fixing position, the nozzle can be moved out of the accommodating groove or placed in the accommodating groove from an opening of the accommodating groove.

2. The nozzle installation device according to claim 1, characterized in that: The limiting member is movably disposed in the accommodating groove.

3. The nozzle installation device according to claim 2, characterized in that: The receiving groove has a bottom wall and a side wall surrounding one side of the bottom wall, and the side wall is provided with an opening; The nozzle installation device includes a driving rod connected to the limiting member, the driving rod is inserted into the opening, one end of the driving rod is fixedly connected to the limiting member, and the other end is located outside the side wall of the accommodating groove, and the driving rod can move inward and outward along the opening; when the driving rod moves inward and outward along the opening, the limiting member can be located in the nozzle fixing position and can be moved away from the nozzle fixing position.

4. The nozzle installation device according to claim 3, characterized in that: The driving rod and the limiting member are detachably connected.

5. The nozzle mounting device according to claim 3 or 4, characterized in that: The nozzle installation device further comprises a hollow connecting rod having a receiving cavity inside, one end of the connecting rod is fixed at the opening, and the receiving cavity is communicated with the receiving groove; At least a portion of the driving rod is disposed in the accommodating cavity.

6. The nozzle mounting device according to claim 5, characterized in that: The connecting rod is provided with a sliding hole located at the side and extending along the length direction of the connecting rod; The suction nozzle installation device includes an operating rod, which is partially inserted into the sliding hole, with one end of the operating rod exposed and the other end connected to the driving rod; when the operating rod is subjected to an external force toward the accommodating groove or an external force away from the accommodating groove, the operating rod can move toward or away from the accommodating groove along the length direction of the connecting rod, and drive the driving rod to move inward and outward along the opening.

7. The nozzle mounting device according to claim 6, characterized in that: The sliding hole is arranged in the middle area of ​​the operating rod; and / or, The length of the connecting rod is 10cm-20cm.

8. The nozzle mounting device according to claim 6, characterized in that: The end of the connecting rod away from the accommodating groove is provided with a blocking piece for blocking the end of the accommodating cavity away from the accommodating groove; The blocking member is detachable; The blocking piece is a T-shaped screw, and the connecting rod is provided with an internal thread that matches the T-shaped screw.

9. The nozzle mounting device according to claim 8, characterized in that: An elastic member is provided in the accommodating cavity and is located between the driving rod and the blocking member; The elastic member can provide an elastic force to the driving rod toward one side of the accommodating groove. When no suction nozzle is provided in the accommodating groove, the elastic force provided by the elastic member to the driving rod can enable the driving rod to drive the limiting member to be located in an initial position. When the limiting member is located in the initial position, the limiting member abuts against the side wall of the accommodating groove that is away from the opening.

10. The nozzle mounting device according to claim 1, characterized in that: The depth of the receiving groove is 0.7 cm-1.5 cm.

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