CN212851672U

CN212851672U - High-precision flexible suction head

Info

Publication number: CN212851672U
Application number: CN202021998620.6U
Authority: CN
Inventors: 贾小强; 黄生春
Original assignee: Shenzhen Yansai Automation Equipment Co ltd
Current assignee: Shenzhen Yansai Automation Equipment Co ltd
Priority date: 2020-09-14
Filing date: 2020-09-14
Publication date: 2021-03-30
Anticipated expiration: 2030-09-14

Abstract

The utility model discloses a high-accuracy flexible suction head, including the outer sleeve, be formed with the slip chamber in the outer sleeve, this slip intracavity slides and is provided with the sliding piston subassembly, be provided with the air cock on the outer sleeve, be formed with the air outlet pipeline on this air cock, should go out the air outlet pipeline switch-on outside with the slip chamber, along the sliding piston subassembly is formed with the gas charging line, the gas charging line switch-on slip chamber and outside, be provided with the bolster that is used for the atmospheric pressure buffering on the sliding piston subassembly. The utility model discloses a negative pressure formula suction nozzle for chip mounter and subsides installation for adsorb electronic component, utilize atmospheric pressure change to adsorb, the effect is soft, and difficult damage electronic device passes through atmospheric pressure's control simultaneously, adsorbs the precision of effort and easily controls, excellent in use effect, and the practicality is strong.

Description

High-precision flexible suction head

Technical Field

The utility model relates to the technical field of machinery, in particular to high-precision flexible suction head.

Background

Chip mounters and mounters are indispensable equipment in the field of electronic product production for mounting corresponding precision parts. The mounting action comprises movement and rotation in three spatial dimensions, and simultaneously the object needs to be grabbed and placed through the adsorption action, and since electronic products are precision manufactured products and have high requirements on the action precision, it is necessary to design a special sucker mechanism to be assembled into a corresponding machine.

SUMMERY OF THE UTILITY MODEL

In view of the above problems. The utility model provides a high-precision flexible suction head.

The technical scheme of the utility model as follows: the utility model provides a high-accuracy flexible suction head, includes the outer sleeve, be formed with the slip chamber in the outer sleeve, this slip intracavity slides and is provided with the slip piston subassembly, be provided with the air cock on the outer sleeve, be formed with the pipeline of giving vent to anger on this air cock, should give vent to anger the pipeline switch-on outside with the slip chamber, along the slip piston subassembly is formed with the gas charging line, the gas charging line switch-on slip chamber and outside, be provided with the bolster that is used for the atmospheric pressure buffering on the slip piston subassembly.

By adopting the technical scheme, articles are put down or adsorbed by inflating or exhausting air in the sliding cavity. The specific inflation or deflation is performed through an inflation pipeline. The piston assembly is arranged in sliding fit with the sliding cavity because the piston assembly slides in the sliding cavity due to the fact that the sliding cavity is inflated or deflated. Because the piston assembly generates reciprocating motion in the sliding cavity by receiving positive and negative air pressure, when the air pressure is increased due to external influence caused by non-active air pressure change operation, the buffering part is arranged for buffering, and the reverse action in the device for inflating is avoided. The buffering strength range is controlled by setting the attribute strength of the buffering part. Through the utility model provides a scheme utilizes piston mechanism as the suction head, forms the effect that the adsorption affinity is variable (through aerifing or carminative change through the change of inside atmospheric pressure for but the adsorption effect positive direction change, also negative direction change) through atmospheric pressure change, and control accuracy is high, adsorbs through atmospheric pressure change, and is relatively soft in the effect of contact, is difficult for producing the work piece damage. Meanwhile, the buffer is structurally arranged to form a buffer effect when the buffer is subjected to reverse action of the other side.

Further, the sliding piston assembly comprises a sliding shaft, the sliding shaft is tubular, an inner pipeline serves as the inflation pipeline, a piston sleeve is sleeved outside the sliding shaft, and the piston sleeve is in contact with the inner wall of the sliding cavity and is in sliding fit with the inner wall of the sliding cavity. In this preferred, the structural style of the sliding piston assembly is specifically given, the piston sleeve is arranged to slide to ensure that the negative pressure effect is structurally realized, and meanwhile, the piston sleeve is supported by arranging the sliding shaft. The sliding shaft is selected to be tubular, the tubular characteristic is utilized to form an inflation pipeline for inflation, and the structure is skillfully and reasonably arranged.

Further, the piston sleeve is in sliding fit with the outer wall of the sliding shaft and is in sealing connection with the outer wall of the sliding shaft. In the present optimization, through sliding fit between the piston sleeve and the sliding shaft, the position of the sliding shaft can be unchanged when the piston sleeve slides back and forth under the action of air pressure, so that the sliding shaft is convenient to fixedly arrange. The piston sleeve and the sliding shaft are connected in a sealing mode to ensure that air leakage cannot occur, and therefore air pressure in the sliding cavity is not affected.

Further, balls are arranged between the piston sleeve and the sliding shaft, and ball racks are correspondingly arranged at the balls for supporting. In the present preferred embodiment, the sliding fit between the piston sleeve and the sliding shaft is achieved by providing a ball between the two. And a ball frame is arranged on the basis of the arrangement of the balls for supporting. Through setting up the ball and regard as sliding fit's structure, it is good to have gliding stability, advantage that impact resistance is strong.

Furthermore, a sealing sleeve is arranged between the piston sleeve and the sliding shaft, and the sealing sleeve is opposite to one side, close to the air outlet pipeline, of the ball. In this optimization, come as seal structure's part through setting up the seal cover, when not interfering sliding fit, also have airtight effect, avoid the inside gas leakage of sliding chamber.

Further, a gap is maintained between the piston sleeve and the sliding shaft to accommodate the ball, the ball frame and the seal sleeve, and a ball groove corresponding to the ball is provided on an inner wall of the piston sleeve. In this optimization, through set up the setting that enough clearance holds ball, ball frame and seal cover in the structure, avoid interfering, be favorable to improving the easy operation shape of assembly. The arrangement of the ball grooves ensures the stability of the linear relative movement between the piston sleeve and the sliding shaft, and plays a role in guiding the sliding track.

Furthermore, the end part of the sliding shaft, which is close to one side of the air outlet pipeline, is provided with a limiting clamp spring, and the limiting clamp spring is arranged between the sliding shaft and the piston sleeve to limit the piston sleeve. In this preferred, carry on spacingly through setting up spacing jump ring, avoid the slip of piston bush to exceed the scope.

Furthermore, a spring is sleeved on the piston sleeve and serves as the buffer piece, one end of the spring abuts against the piston sleeve, and the other end of the spring abuts against the sliding shaft. In this preferred, help the removal of piston bush to cushion through setting up the spring as the bolster, confirm the scope of cushioning effect through the intensity that sets up the spring.

Further, the sliding cavity and the air outlet pipeline are both in a straight tubular shape, and the sliding cavity and the air outlet pipeline are coaxially arranged. In the optimization, a structural form of arranging the sliding cavity and the air outlet pipeline is provided, so that the adsorption is facilitated by the change of air pressure.

Further, the air cock is located the tip of outer sleeve, just the external diameter of air cock is less than the external diameter of outer sleeve main part, the periphery of air cock is formed with the annular. The preferred structure form of the air faucet is provided, so that the whole product can be conveniently connected into a mechanical device for use.

Has the advantages that: the utility model provides a novel, reasonable in design and convenient to use think about, the utility model discloses a negative pressure formula suction nozzle for chip mounter and subsides installation for adsorb electronic component, utilize atmospheric pressure change to adsorb, the effect is soft, and difficult damage electron device passes through atmospheric pressure control simultaneously, adsorbs the precision of effort and easily controls, excellent in use effect, and the practicality is strong.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

FIG. 2 is a schematic sectional view A-A of FIG. 1.

Detailed Description

The invention will be further explained with reference to the following figures and examples:

referring to fig. 1-2, a high precision flexible suction head comprises an outer sleeve 100, a sliding cavity 110 formed in outer sleeve 100, a sliding piston assembly 200 slidably disposed in sliding cavity 110, an air nozzle 120 disposed on outer sleeve 100, an air outlet pipe 121 formed on air nozzle 120, the air outlet pipe 121 connecting the outside and sliding cavity 110, an air charging pipe 210 formed along sliding piston assembly 200, the air charging pipe 210 connecting sliding cavity 110 and the outside, and a buffer member 300 for air pressure buffering disposed on sliding piston assembly 200. Preferably, the sliding piston assembly 200 includes a sliding shaft 220, the sliding shaft 220 is tubular, the inner pipe is used as the inflation pipe 210, the sliding shaft 220 is sleeved with a piston sleeve 230, and the piston sleeve 230 contacts with and is slidably fitted to the inner wall of the sliding cavity 110. Preferably, the piston sleeve 230 is slidably engaged with and sealingly coupled to the outer wall of the sliding shaft 220. Preferably, a ball 240 is disposed between the piston sleeve 230 and the sliding shaft 220, and a ball frame 250 is correspondingly disposed at the ball 240 for supporting. Preferably, a sealing sleeve 260 is further disposed between the piston sleeve 230 and the sliding shaft 220, and the sealing sleeve 260 is disposed on a side of the air outlet pipe 121 opposite to the ball 240. Preferably, a gap is maintained between the piston sleeve 230 and the sliding shaft 220 to accommodate the balls 240, the ball holders 250, and the seal sleeve 260, and the inner wall of the piston sleeve 230 is provided with ball grooves corresponding to the balls 240. Preferably, a limit clamp spring 270 is disposed at an end portion of the sliding shaft 220 close to the gas outlet pipeline 121, and the limit clamp spring 270 is disposed between the sliding shaft 220 and the piston sleeve 230 to limit the piston sleeve 230. Preferably, a spring is sleeved on the piston sleeve 230, and the spring serves as a buffer 300. Preferably, the sliding cavity 110 and the outlet pipe 121 are both in a straight tubular shape, and the sliding cavity 110 and the outlet pipe 121 are coaxially arranged. Preferably, nozzle 120 is located at an end of outer sleeve 100, and the outer diameter of nozzle 120 is smaller than the outer diameter of the body of outer sleeve 100, and a circumferential groove is formed at the outer circumference of nozzle 120.

In one embodiment, outer sleeve 100 and sliding piston assembly 200 slidably cooperate to form a negative pressure generating mechanism for pneumatically adsorbing an electronic device through outlet conduit 121 of air nozzle 120. In specific implementation, the adsorption is performed by charging the air charging pipeline 210 to the sliding cavity 110 in a positive direction or a negative direction. The control of the inflation is by an externally accessed air pump. As shown in fig. 2, the sliding chamber 110 and the outlet pipe 121 are in a straight pipe shape, so that the sliding piston assembly 200 disposed inside can move linearly and smoothly. Meanwhile, the air pressure change at the position of the air tap is smooth. Nozzle 120 is positioned at the end of the main portion of outer sleeve 100 opposite piston assembly 200 for ease of use, as shown in FIG. 2, while a circumferential groove is provided in nozzle 120 for ease of assembly during use.

In particular embodiments, sliding piston assembly 200 functions by sliding relative to outer sleeve 100, and since this structure may have a variety of configurations for sliding relative to outer sleeve 100, the contact surface may be a sliding rail-like structure that moves by bearing ball contact, or may be direct surface contact, and is widely known in the art, and is not listed here. The structure of the air inflation for the air pressure problem is only required to have the air inflation pipeline 210, and the structure can be arranged in various specific arrangement forms, which are not listed here. In a specific use, if the inflation air pressure is constant, there may be an excessive air pressure in the sliding cavity 110 caused by external influence on the air outlet pipeline 121, and therefore the buffer member 300 is provided to buffer the reverse action caused by the air pressure. The threshold value of the buffer 300 is set to buffer pressure variation in the moving range. The buffer member 300 can be selected from various components, such as a spring, an elastic material (e.g., silicone, rubber, other polymer materials, etc.), an air cylinder, and the like. Therefore, any product in the prior art is within the scope of the present disclosure as a reset mechanism for outer sleeve 100. In a specific implementation, the buffer member 300 may be implemented by using a spring, and the pressure threshold of the spring as a buffer device is set to 5 n.

In the specific implementation process, a structural form of the sliding piston assembly 200 is specifically given, and specifically includes a sliding shaft 220, a piston sleeve 230, a ball 240, a ball frame 250, a seal sleeve 260, and a limit circlip 270. The above components are assembled to form a whole. In order to ensure linear guidance of the balls 240 during rolling, ball grooves are provided. In particular implementations, outer sleeve 100, piston sleeve 230, and sliding shaft 220 may all be made of metal. The sealing sleeve 260 functions to be airtight, and thus may be made of materials commonly used for a sealing ring, such as rubber and silicone, but is not limited to these two materials according to the development of the related art.

Technical scheme more than combining, the utility model discloses in concrete use, carry out positive or negative direction through the gas charging line 210 on the sliding shaft 220 and apply atmospheric pressure, reach the effect of adsorbing electron device through rationally controlling atmospheric pressure. Since the input of the air pressure can be precisely controlled, the force of adsorption can also be precisely controlled.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. A high-precision flexible suction head is characterized in that: including outer sleeve (100), be formed with slip chamber (110) in outer sleeve (100), it is provided with slip piston subassembly (200) to slide in this slip chamber (110), be provided with air cock (120) on outer sleeve (100), be formed with on this air cock (120) and go out gas pipeline (121), should go out gas pipeline (121) put through outside with slip chamber (110), along slip piston subassembly (200) are formed with gas charging line (210), gas charging line (210) put through slip chamber (110) and outside, be provided with on slip piston subassembly (200) and be used for the bolster (300) of atmospheric pressure buffering.

2. A high precision flexible pipette tip as recited in claim 1 wherein: the sliding piston assembly (200) comprises a sliding shaft (220), the sliding shaft (220) is tubular, an internal pipeline is used as the inflation pipeline (210), a piston sleeve (230) is sleeved outside the sliding shaft (220), and the piston sleeve (230) is in contact with the inner wall of the sliding cavity (110) and is in sliding fit with the inner wall of the sliding cavity.

3. A high precision flexible pipette tip as recited in claim 2 wherein: the piston sleeve (230) is in sliding fit with the outer wall of the sliding shaft (220) and is connected with the sliding shaft in a sealing mode.

4. A high precision flexible pipette tip as recited in claim 3 wherein: balls (240) are arranged between the piston sleeve (230) and the sliding shaft (220), and ball frames (250) are correspondingly arranged at the balls (240) for supporting.

5. A high precision flexible pipette tip as recited in claim 4 wherein: and a sealing sleeve (260) is further arranged between the piston sleeve (230) and the sliding shaft (220), and the sealing sleeve (260) is close to one side of the air outlet pipeline (121) relative to the ball bearing (240).

6. A high precision flexible pipette tip as recited in claim 5 wherein: a gap is maintained between the piston sleeve (230) and the sliding shaft (220) to accommodate the balls (240), the ball frame (250) and the seal sleeve (260), and the inner wall of the piston sleeve (230) is provided with a ball groove corresponding to the balls (240).

7. A high precision flexible pipette tip as recited in claim 6 wherein: the end part of the sliding shaft (220) close to one side of the air outlet pipeline (121) is provided with a limiting clamp spring (270), and the limiting clamp spring (270) is arranged between the sliding shaft (220) and the piston sleeve (230) to limit the piston sleeve (230).

8. A high precision flexible pipette tip as recited in claim 7 wherein: the piston sleeve (230) is sleeved with a spring serving as the buffer piece (300), one end of the spring abuts against the piston sleeve (230), and the other end of the spring abuts against the sliding shaft (220).

9. A high precision flexible pipette tip as defined in any one of claims 1 to 8 wherein: the sliding cavity (110) and the air outlet pipeline (121) are both in a straight tubular shape, and the sliding cavity (110) and the air outlet pipeline (121) are coaxially arranged.

10. A high precision flexible pipette tip as recited in claim 9 wherein: the air tap (120) is located at the end of the outer sleeve (100), the outer diameter of the air tap (120) is smaller than that of the main body of the outer sleeve (100), and a ring groove is formed in the periphery of the air tap (120).