Adjustable pneumatic suction nozzle

Abstract

The utility model relates to the technical field of mounting technology, in particular to an adjustable pneumatic suction nozzle which comprises an outer air pipe and an inner air pipe, one end of the outer air pipe is sealed, the inner air pipe is movably inserted into the other end of the outer air pipe, and a buffer mechanism is arranged in the outer air pipe. An air inlet pipe is arranged on the outer wall of the left end of the outer air pipe, an exhaust pipe is arranged on the outer wall of the right end of the outer air pipe, and an electromagnetic air valve is installed on the exhaust pipe. The opening end of the outer air pipe is connected with a locking nut through an external thread, and a rubber suction cup is arranged at the bottom end of the inner air pipe. The discharging device has the advantages that the effect of discharging can be achieved by adjusting the air pressure in the inner air pipe without closing the air pump; and the buffering mechanism not only has the buffering and energy absorbing effects, but also has the sealing performance, so that the buffering mechanism has a better sealing effect.

Description

Technical Field

[0001] This utility model relates to the field of mounting technology, and more specifically, to an adjustable pneumatic nozzle. Background Technology

[0002] With the development of technology, electronic components are gradually becoming smaller and even miniaturized. Surface mount components are highly integrated and small electrical components. During installation, they generally cannot be efficiently installed or transported manually. Existing pick-and-place machines can effectively replace manual operation, and these machines mainly use nozzles to pick up the components.

[0003] The nozzles of existing pick-and-place machines are mostly made of rigid materials and lack a return mechanism, which may cause product damage during the adsorption or unloading process. It is worth noting that because there is negative pressure inside the nozzle, the patch is always adsorbed on the nozzle. During the placement process, the air pump needs to be turned off to facilitate the drop of the patch. Repeatedly turning the air pump on and off can easily reduce the service life of the air pump.

[0004] To address the aforementioned issues, there is an urgent need for an adjustable pneumatic nozzle. Utility Model Content

[0005] The purpose of this invention is to provide an adjustable pneumatic nozzle to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, an adjustable pneumatic nozzle is provided, wherein one end of the outer air tube is sealed, the inner air tube is movably inserted into the other end of the outer air tube, a buffer mechanism is provided inside the outer air tube, and the outer air tube and the inner air tube are connected by the buffer mechanism.

[0007] An air inlet pipe is provided on the outer wall of the left end of the external air pipe, and an exhaust pipe is provided on the outer wall of the right end. An electromagnetic valve is installed on the exhaust pipe. High-pressure airflow enters from the air inlet pipe at the left end and is directly injected into the exhaust pipe and discharged. At this time, a negative pressure area is formed at the top of the inner cavity of the external air pipe. As a result, the air inside the inner air pipe moves upward to achieve the effect of adsorbing the product at the bottom of the rubber suction cup. If the electromagnetic valve is closed at this time, the airflow will be sprayed out from the rubber suction cup at the bottom of the inner air pipe, thus completing the unloading function.

[0008] The opening end of the external air tube is connected to a locking nut via an external thread. The diameter of the opening at the top of the locking nut is the same as the outer diameter of the external air tube, and the diameter of the opening at the bottom is the same as the outer diameter of the inner air tube. The inner diameter of the external air tube is larger than the outer diameter of the inner air tube. A limiting groove is formed on the inner wall at the bottom of the external air tube, and a rubber gasket is provided in the limiting groove.

[0009] A rubber suction cup is provided at the bottom of the inner air tube.

[0010] Furthermore, the buffer mechanism includes an upper fixed ring, a lower movable ring, and a spring. The upper fixed ring is fixed to the inner wall of the outer air tube and near the sealing end. The lower movable ring is fixedly connected to the top end of the inner air tube. The spring is located between the upper fixed ring and the lower movable ring.

[0011] It is worth noting that the inner diameter of the lower movable ring is equal to the inner diameter of the inner air pipe, and its outer diameter is equal to the inner diameter of the outer air pipe. At the moment the rubber suction cup contacts the product, the spring collapses and absorbs energy, and then rebounds and resets after picking up the product. The installation position of the air inlet pipe and the air outlet pipe is above the upper fixed ring. The upper fixed ring can prevent the spring from being between the air inlet pipe and the air outlet pipe, thus reducing the airflow speed.

[0012] Furthermore, the limiting groove is arranged in a ring along the inner wall of the outer air pipe, and its longitudinal section is trapezoidal. The rubber gasket is placed in the limiting groove. When the inner air pipe moves inside the outer air pipe, the limiting groove can restrict the rubber gasket to move synchronously.

[0013] Furthermore, the inner wall of the bottom end of the locking nut extends inward and contacts the outer wall of the inner air tube. This extension is used to prevent the inner air tube from moving further outward. At the same time, the extension, the inner air tube, the lower movable ring, and the outer air tube form a closed area, and the rubber gasket is located in this area.

[0014] Furthermore, the rubber suction cup has a trumpet-shaped structure, and several rubber blocks are arranged in a ring on the inner wall of the rubber suction cup to prevent the rubber suction cup from collapsing.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] A buffer mechanism is set between the outer and inner air tubes to avoid damage to the patch during adsorption and unloading. At the same time, the lower movable ring can cooperate with the rubber gasket to achieve a better sealing effect and avoid air leakage from the nozzle.

[0017] An electromagnetic valve is installed inside the exhaust pipe. By controlling the opening and closing of the electromagnetic valve, the air pressure inside the inner air pipe can be regulated without shutting down the air pump, thereby extending the service life of the air pump.

[0018] During the unloading process, the thrust can be controlled by adjusting the air pressure and gas flow rate in the air inlet pipe, thereby controlling the impact force between the product and the contact surface and protecting the product from damage. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0021] Figure 3 For the present invention Figure 2 Enlarged view of structure A in the middle.

[0022] The meanings of the labels in the diagram are as follows:

[0023] 1. External air pipe; 2. Internal air pipe; 3. Buffer mechanism; 301. Upper fixed ring; 302. Lower movable ring; 303. Spring; 4. Air inlet pipe; 5. Exhaust pipe; 6. Solenoid valve; 7. Locking nut; 8. Limiting groove; 9. Rubber washer; 10. Rubber suction cup; 11. Rubber block. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0025] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” and “described” used herein may also include the plural forms. It should be further understood that the word “comprising” as used in this specification means the presence of the described features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0026] Please see Figures 1-3 As shown, an adjustable pneumatic nozzle is provided. One end of the outer air tube 1 is sealed, and the inner air tube 2 is movably inserted into the other end of the outer air tube 1. A buffer mechanism 3 is provided inside the outer air tube 1, and the outer air tube 1 and the inner air tube 2 are also connected by the buffer mechanism 3.

[0027] An air inlet pipe 4 is provided on the outer wall of the left end of the external air pipe 1, and an exhaust pipe 5 is provided on the outer wall of the right end. An electromagnetic valve 6 is installed on the exhaust pipe 5. The high-pressure airflow enters from the air inlet pipe 4 at the left end and is directly injected into the exhaust pipe 5 and then discharged. At this time, a negative pressure area is formed at the top of the inner cavity of the external air pipe 1, so the air inside the inner air pipe 2 moves upward to achieve the effect of adsorbing the product at the bottom of the rubber suction cup 10. If the electromagnetic valve 6 is closed at this time, the high-speed airflow will be ejected from the rubber suction cup 10 at the bottom of the inner air pipe 2, thus completing the unloading function.

[0028] It is worth noting that in actual operation, the suction or spray pressure can be adjusted by adjusting the air pressure at the end of the air inlet pipe 4. Especially during the unloading process, by precisely and strictly adjusting the air pressure entering the air inlet pipe 4, the unloading force can be controlled, the impact force generated between the product and the contact surface during unloading can be reduced, and the product can be protected from damage.

[0029] The opening end of the external air pipe 1 is connected to a locking nut 7 via an external thread. The diameter of the opening at the top of the locking nut 7 is the same as the outer diameter of the external air pipe 1, and the diameter of the opening at the bottom is the same as the outer diameter of the inner air pipe 2. The inner diameter of the external air pipe 1 is larger than the outer diameter of the inner air pipe 2. A limiting groove 8 is formed on the inner wall at the bottom of the external air pipe 1, and a rubber gasket 9 is provided in the limiting groove 8.

[0030] Please refer to this section. Figure 2 and Figure 3 The limiting groove 8 is arranged in a ring along the inner wall of the outer air pipe 1, and its longitudinal section is trapezoidal. The rubber gasket 9 is placed within the limiting groove 8. When the inner air pipe 2 moves inside the outer air pipe 1, the limiting groove 8 restricts the rubber gasket 9 from moving synchronously. The inner wall of the bottom end of the locking nut 7 extends inward and contacts the outer wall of the inner air pipe 2. This extended portion prevents the inner air pipe 2 from moving further outward. Simultaneously, this extended portion, the inner air pipe 2, the lower movable ring 302, and the outer air pipe 1 form a closed area. The rubber gasket 9 is located within this area, and it can be seen that the limiting groove 8 is also part of this closed area. Figure 2 As shown, during the upward movement of the inner air tube 2, the limiting groove 8 can hold the rubber gasket 9 in place to prevent it from moving upward; while during the downward movement of the inner air tube 2, due to the presence of the extension portion, the rubber gasket 9 has no space to move downward.

[0031] A rubber suction cup 10 is provided at the bottom end of the inner air tube 2.

[0032] like Figure 2 As shown:

[0033] The buffer mechanism 3 includes an upper fixed ring 301, a lower movable ring 302, and a spring 303. The upper fixed ring 301 is fixed to the inner wall of the outer air pipe 1 and near the sealing end. The lower movable ring 302 is fixedly connected to the top end of the inner air pipe 2. The spring 303 is located between the upper fixed ring 301 and the lower movable ring 302.

[0034] It is worth noting that the inner diameter of the lower movable ring 302 is equal to the inner diameter of the inner air pipe 2, and its outer diameter is equal to the inner diameter of the outer air pipe 1. At the moment when the rubber suction cup 10 contacts the product, the spring 303 collapses to absorb energy, and then rebounds to its original position after absorbing the product. The installation position of the air inlet pipe 4 and the exhaust pipe 5 is above the upper fixed ring 301. The upper fixed ring 301 can prevent the spring from being between the air inlet pipe 4 and the exhaust pipe 5, thereby reducing the airflow speed.

[0035] The rubber suction cup 10 has a trumpet-shaped structure, and several rubber blocks 11 are arranged in a ring on the inner wall of the rubber suction cup 10 to prevent the rubber suction cup 10 from collapsing.

[0036] Work process:

[0037] Adsorption process:

[0038] Open the solenoid valve 6 to connect the air inlet pipe 4 to the output end of the air pump. The air pump outputs high-pressure, high-speed airflow directly. Since the exhaust pipe 5 and the air inlet pipe 4 are on the same straight line, the high-pressure, high-speed airflow is directly output from the exhaust pipe 5, and a negative pressure area is formed at the inner air pipe 2 and the rubber suction cup 10, which generates suction to adsorb the product. Then, the robotic arm is responsible for moving the device to the corresponding position.

[0039] Unloading process:

[0040] When the solenoid valve 6 is closed, the exhaust pipe 5 is shut off, and the high-pressure, high-speed airflow in the intake pipe 4 can only be discharged through the rubber suction cup 10, thereby generating a thrust at the bottom of the rubber suction cup 10 to unload the product. During this unloading process, the magnitude of the thrust can be controlled by adjusting the air pressure and gas flow rate in the intake pipe 4, thereby controlling the impact force generated between the product and the contact surface and protecting the product from damage.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An adjustable pneumatic suction nozzle, comprising an outer air tube (1) and an inner air tube (2), characterized in that: One end of the external air tube (1) is sealed, and the internal air tube (2) is movably inserted into the other end of the external air tube (1). A buffer mechanism (3) is provided inside the external air tube (1). An air inlet pipe (4) is provided on the outer wall of the left end of the external air pipe (1), and an exhaust pipe (5) is provided on the outer wall of the right end. An electromagnetic valve (6) is installed on the exhaust pipe (5). The opening end of the external air pipe (1) is connected to a locking nut (7) by an external thread. The diameter of the opening at the top of the locking nut (7) is the same as the outer diameter of the external air pipe (1), and the diameter of the opening at the bottom is the same as the outer diameter of the inner air pipe (2). The inner diameter of the external air pipe (1) is larger than the outer diameter of the inner air pipe (2). A limiting groove (8) is provided on the inner wall at the bottom of the external air pipe (1), and a rubber gasket (9) is provided in the limiting groove (8). The bottom end of the inner air tube (2) is provided with a rubber suction cup (10). The buffer mechanism (3) includes an upper fixed ring (301), a lower movable ring (302) and a spring (303). The upper fixed ring (301) is fixed to the inner wall of the outer air tube (1) and close to the sealing end. The lower movable ring (302) is fixedly connected to the top end of the inner air tube (2). The spring (303) is located between the upper fixed ring (301) and the lower movable ring (302).

2. The adjustable pneumatic nozzle according to claim 1, characterized in that: The inner diameter of the lower movable ring (302) is equal to the inner diameter of the inner air tube (2), and its outer diameter is equal to the inner diameter of the outer air tube (1).

3. The adjustable pneumatic nozzle according to claim 1, characterized in that: The intake pipe (4) and exhaust pipe (5) are installed above the upper fixing ring (301).

4. An adjustable pneumatic suction nozzle according to claim 1, characterized in that: The limiting groove (8) is arranged in a ring along the inner wall of the external air pipe (1), and its longitudinal section is trapezoidal.

5. An adjustable pneumatic suction nozzle according to claim 2, characterized in that: The inner wall of the bottom end of the locking nut (7) extends inward and contacts the outer wall of the inner air tube (2). This extension is used to prevent the inner air tube (2) from moving outward. At the same time, the extension, the inner air tube (2), the lower movable ring (302) and the outer air tube (1) form a closed area, and the rubber gasket (9) is located in this area.

6. An adjustable pneumatic suction nozzle according to claim 1, characterized in that: The rubber suction cup (10) has a trumpet-shaped structure, and the inner wall of the rubber suction cup (10) is provided with several rubber blocks (11) to prevent the rubber suction cup (10) from collapsing.

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