Suction nozzle of automatic chip mounter

Abstract

The utility model discloses a suction nozzle of an automatic chip mounter, and relates to the technical field of chip mounters, the suction nozzle comprises a chip mounting suction nozzle and a negative pressure pipe sleeved in the output end of the chip mounting suction nozzle, the inner wall of the top end of the chip mounting suction nozzle is provided with a stepped groove in a surrounding manner, and the interior of the stepped groove is provided with a compensation air bag. An elastic sealing sleeve is arranged on the outer side, attached to the negative pressure pipe, of the inner wall of the compensation air bag, an arc-shaped pressing plate is driven to extrude the main air bag by rotating an extrusion valve, the main air bag is collapsed after being extruded, internal air enters the compensation air bag through a hose, the compensation air bag is expanded, and the negative pressure pipe is sealed. The elastic sealing sleeve on the negative pressure pipe is tightly attached to the outer wall of the negative pressure pipe, so that the sealing performance of the connecting end between the negative pressure pipe and the chip mounting suction nozzle is further improved, the risk of leakage in subsequent use is reduced, gas pressure is a main sealing pressure source, and the sealing effect is good. And the attaching degree between the elastic sealing sleeve and the negative pressure pipe can be conveniently controlled in the later period, and the device is more flexible.

Description

Technical Field

[0001] The utility model relates to the technical field of sodium dihydrogen phosphate production devices, in particular to a suction nozzle of an automatic chip placement machine. Background Art

[0002] The placement machine, also known as the "mounting machine", is configured after the dispensing machine or screen printing machine in the production line. It is a device that accurately places the mounted components on the PCB pads by moving the placement head. The suction nozzle of the placement machine is its key component, and the suction of the components is achieved by generating negative pressure at the end of the suction nozzle.

[0003] The Chinese patent authorization announcement number is CN219961257U, and its name is a chip suction nozzle for a chip placement machine, including a connecting tube, the end of which is sleeved with a funnel-shaped suction nozzle assembly, the bottom of the suction nozzle assembly is provided with an abutment mechanism, the top of the abutment mechanism is provided with a filter plate that is clamped to the inside of the suction nozzle assembly, and the abutment mechanism is driven to maintain vertical reciprocating motion to drive the filter plate to maintain synchronous reciprocating motion. The chip suction nozzle for a chip placement machine provided by the utility model can slide vertically through multiple abutment plates located at the adsorption end, and can tightly abut the concave and convex places when adsorbing workpieces with uneven surfaces, thereby reducing the size and number of leaks, and the abutment plates are driven to continuously press down through the internal springs; and the filter plates clamped on the top of each abutment plate can drive the filter plates to move synchronously during the vertical movement of the abutment plates, thereby shaking and cleaning the dust blocked by the outer wall of the filter plate;

[0004] The shortcomings of the above-mentioned prior art solution are: although the above-mentioned solution can adsorb workpieces with uneven surfaces, when the suction nozzle is connected to the negative pressure tube, the connection end of the suction nozzle and the negative pressure tube is sealed by simply relying on threads and sealing rubber pads. Once the negative pressure tube or the sealing rubber pad is worn and aged during later use, leakage will occur at the connection end of the two, resulting in a decrease in the negative pressure of the suction nozzle, making it difficult or impossible to effectively adsorb the components, causing many inconveniences to the assembly work. Utility Model Content

[0005] The purpose of the utility model is to provide a suction nozzle of an automatic placement machine to solve the technical problems mentioned in the above background technology.

[0006] The technical problem to be solved by the utility model can be achieved through the following technical solutions:

[0007] A nozzle of an automatic patch machine comprises a patch nozzle and a negative pressure tube sleeved inside an output end of the patch nozzle;

[0008] A stepped groove is provided around the inner wall of the top end of the patch nozzle, a compensating airbag is arranged inside the stepped groove, an elastic sealing sleeve is provided on the inner wall of the compensating airbag to fit the outer side of the negative pressure tube, a protective shell is provided around the outer side of the top of the patch nozzle, a connecting tube is provided on the protective shell, a main airbag is symmetrically provided inside the protective shell, a hose connected to the compensating airbag is provided on the main airbag, and the hose is located inside the connecting tube, an extrusion valve is rotatably provided on the protective shell, and an arc-shaped pressure plate is rotatably provided on one end of the extrusion valve close to the main airbag.

[0009] As a further solution of the utility model: the input end of the patch nozzle is designed as a constriction, the diameter of which gradually decreases from top to bottom, and a flexible rubber sleeve is provided at the end.

[0010] As a further solution of the utility model: a baffle is arranged around the outer side of one end of the extrusion valve away from the arc-shaped pressure plate, and a connecting groove for installing a hose is opened on the outer side of the patch nozzle.

[0011] As a further solution of the utility model: an annular ring is arranged around the inner wall of the patch nozzle, the annular ring is located below the stepped groove, and the inner diameter of the annular ring is smaller than the negative pressure tube, and a rubber pad is arranged on the side of the annular ring close to the negative pressure tube.

[0012] As a further solution of the utility model: an O-ring groove is formed around the inner wall of the patch nozzle, the O-ring groove is located between the annular ring and the stepped groove, and an O-ring is fitted inside the O-ring groove.

[0013] Beneficial effects of the utility model:

[0014] When the patch nozzle and the negative pressure tube are assembled, the utility model rotates the extrusion valve to drive the arc-shaped pressure plate to squeeze the main airbag. The main airbag collapses after being squeezed, and the internal gas enters the compensation airbag through the hose, causing the compensation airbag to expand, so that the elastic sealing sleeve thereon fits tightly with the outer wall of the negative pressure tube, thereby further improving the sealing performance at the connection end between the negative pressure tube and the patch nozzle, reducing the risk of leakage during subsequent use. In addition, the gas pressure is the main source of sealing pressure, which is also convenient for controlling the degree of fit between the elastic sealing sleeve and the negative pressure tube at a later stage, and the device is more flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings.

[0016] Figure 1 It is a three-dimensional schematic diagram of the whole device in the utility model;

[0017] Figure 2 It is a schematic diagram of the overall structure of the device in the utility model;

[0018] Figure 3 This utility model Figure 2 Enlarged schematic diagram at point A in the middle.

[0019] In the figure: 1. patch nozzle; 2. negative pressure tube; 3. stepped groove; 4. compensation airbag; 5. elastic sealing sleeve; 6. protective shell; 7. connecting pipe; 8. main airbag; 9. hose; 10. extrusion valve; 11. arc pressure plate; 12. baffle; 13. connecting groove; 14. annular ring; 15. rubber pad; 16. O-ring groove; 17. O-ring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1-3 As shown, a nozzle of an automatic chip placement machine includes a chip placement nozzle 1 and a negative pressure tube 2 sleeved inside the output end of the chip placement nozzle 1. After the chip placement nozzle 1 and the negative pressure tube 2 are assembled, the chip placement nozzle 1 can pick up corresponding electronic components through the negative pressure generated by the chip placement machine;

[0022] A stepped groove 3 is provided around the inner wall of the top of the patch nozzle 1, a compensating airbag 4 is provided inside the stepped groove 3, an elastic sealing sleeve 5 is provided on the inner wall of the compensating airbag 4 to fit the outer side of the negative pressure tube 2, a protective shell 6 is provided around the outer side of the top of the patch nozzle 1, a connecting pipe 7 is provided on the protective shell 6, a main airbag 8 is symmetrically provided inside the protective shell 6, a hose 9 connected to the compensating airbag 4 is provided on the main airbag 8, and the hose 9 is located inside the connecting pipe 7, an extrusion valve 10 is rotatably provided on the upper part of the protective shell 6, and an arc-shaped pressing plate 11 is rotatably provided on the end of the extrusion valve 10 close to the main airbag 8. When the patch nozzle 1 and the negative pressure tube 2 are assembled, the staff can rotate The extrusion valve 10 drives the arc pressure plate 11 to squeeze the main airbag 8. The main airbag 8 collapses after being squeezed, and the internal gas enters the compensation airbag 4 through the hose 9, causing the compensation airbag 4 to expand, so that the elastic sealing sleeve 5 thereon fits tightly with the outer wall of the negative pressure tube 2, thereby further improving the sealing performance at the connecting end between the negative pressure tube 2 and the patch nozzle 1, and making it convenient for the staff to control the degree of fit between the elastic sealing sleeve 5 and the negative pressure tube 2. The protective shell 6 and the connecting tube 7 can be provided to cover and protect the main airbag 8 and the hose 9, thereby greatly reducing the risk of the main airbag 8 and the hose 9 being punctured by external objects during use.

[0023] In the present embodiment, specifically, the input end of the patch nozzle 1 is designed as a bundle opening, the diameter of which gradually decreases from top to bottom, and a flexible rubber sleeve is provided at the end. The design of the bundle opening of the input end of the patch nozzle 1 can increase the gas flow rate at the input end. According to the Bernoulli equation, when the flow rate increases, the corresponding negative pressure will also increase, so that the input end of the patch nozzle 1 always has a large negative pressure, and the provided flexible rubber sleeve can further improve the sealing of the contact between the patch nozzle 1 and the electronic component, so that the patch nozzle 1 can form a stable suction on the electronic component.

[0024] In the present embodiment, specifically, a baffle 12 is arranged around the outer side of one end of the extrusion valve 10 away from the arc-shaped pressure plate 11, and the baffle 12 limits the movement of the extrusion valve 10 to prevent the extrusion valve 10 from excessively squeezing the main airbag 8 and causing the main airbag 8 to rupture, thereby providing good protection for the main airbag 8. A connecting groove 13 for installing the hose 9 is provided on the outer side of the patch nozzle 1.

[0025] In the present embodiment, specifically, an annular ring 14 is arranged around the inner wall of the patch suction nozzle 1, the annular ring 14 is located below the stepped groove 3, and the inner diameter of the annular ring 14 is smaller than the negative pressure tube 2, a rubber pad 15 is arranged on the side of the annular ring 14 close to the negative pressure tube 2, an O-ring groove 16 is arranged around the inner wall of the patch suction nozzle 1, the O-ring groove 16 is located between the annular ring 14 and the stepped groove 3, an O-ring sealing ring 17 is arranged in a close fit inside the O-ring groove 16, when the negative pressure tube 2 and the patch suction nozzle 1 are assembled, the annular ring 14 is arranged to form a stable support for the rubber pad 15, the extrusion formed by the rubber pad 15 and the end face of the negative pressure tube 2 can form a good seal on the end face of the negative pressure tube 2, the extrusion formed by the inner wall of the O-ring sealing ring 17 and the negative pressure tube 2 can form a good radial seal on the negative pressure tube 2, and the cooperation between the two can effectively prevent gas leakage at the connection end of the patch suction nozzle 1 and the negative pressure tube 2 during use.

[0026] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A nozzle for an automatic patch machine, comprising a patch nozzle (1) and a negative pressure tube (2) sleeved inside the output end of the patch nozzle (1); characterized in that: The top inner wall of the patch nozzle (1) is provided with a stepped groove (3), a compensating airbag (4) is arranged inside the stepped groove (3), an elastic sealing sleeve (5) is arranged on the inner wall of the compensating airbag (4) and is in contact with the outer side of the negative pressure tube (2), a protective shell (6) is arranged around the outer side of the top of the patch nozzle (1), a connecting tube (7) is arranged on the top of the protective shell (6), a main airbag (8) is symmetrically arranged inside the protective shell (6), a hose (9) connected to the compensating airbag (4) is arranged on the main airbag (8), and the hose (9) is located inside the connecting tube (7), an extrusion valve (10) is rotatably arranged on the top of the protective shell (6), and an arc-shaped pressure plate (11) is rotatably arranged on one end of the extrusion valve (10) close to the main airbag (8).

2. The suction nozzle of an automatic placement machine according to claim 1, characterized in that: The input end of the patch suction nozzle (1) is designed as a constriction, the diameter of which gradually decreases from top to bottom, and a flexible rubber sleeve is provided at the end.

3. The suction nozzle of an automatic placement machine according to claim 1, characterized in that: A baffle (12) is arranged around the outer side of one end of the extrusion valve (10) away from the arc-shaped pressure plate (11), and a connecting groove (13) for installing a hose (9) is provided on the outer side of the patch nozzle (1).

4. The suction nozzle of an automatic placement machine according to claim 1, characterized in that: An annular ring (14) is arranged around the inner wall of the patch nozzle (1), the annular ring (14) is located below the stepped groove (3), and the inner diameter of the annular ring (14) is smaller than the negative pressure tube (2), and a rubber pad (15) is arranged on the side of the annular ring (14) close to the negative pressure tube (2).

5. The suction nozzle of an automatic placement machine according to claim 4, characterized in that: An O-ring groove (16) is formed around the inner wall of the patch nozzle (1), the O-ring groove (16) is located between the annular ring (14) and the stepped groove (3), and an O-ring sealing ring (17) is fitted inside the O-ring groove (16).

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