Sealed spline assembly nozzle

Abstract

This utility model provides a sealed spline assembly nozzle, including a locking block with a first through hole at its center. A hollow integral sleeve is installed below the locking block, and a sealing material is installed between the locking block and the integral sleeve. A hollow sliding sleeve is installed on the integral sleeve, and a nozzle is installed at the distal end of the sliding sleeve. The fluid channel of the nozzle is axially connected to the inner cavity of the sliding sleeve. The integral sleeve includes a boss with a hollow protruding nozzle at its top center. A third through hole is located at the center of the sealing material, and the protruding nozzle passes through the third through hole and communicates with the first through hole. The bottom of the boss is connected to a hollow cylinder, and the inner cavity of the protruding nozzle communicates with the inner cavity of the cylinder. The sliding sleeve is slidably fitted onto the cylinder, and its inner cavity communicates with the inner cavity of the cylinder. The beneficial effects of this utility model are: through structural optimization, this utility model replaces the traditional external air pipe with an internal straight-through air pipe, which can effectively prevent air leakage and ensure the stable and reliable performance of the nozzle.

Description

Technical Field

[0001] This utility model relates to the field of mechanical technology, and in particular to a sealing spline assembly nozzle. Background Technology

[0002] Pick and place machines are automated devices used in the electronics manufacturing industry to precisely place surface mount components onto PCBs (printed circuit boards) or other substrates. They are one of the core pieces of equipment in the SMT (Surface Mount Technology) production process. Their working principle is similar to a "high-speed robotic arm," using a high-precision robotic arm and nozzle to accurately place tiny electronic components into designated positions. They are widely used in the mass production of various electronic products such as mobile phones, computers, home appliances, and automotive electronics.

[0003] As electronic products continue to evolve towards miniaturization and high performance, electronic components are also becoming increasingly miniaturized. To improve production efficiency, the placement speed of SMT production lines is constantly increasing. The nozzle needs to accurately pick up and place components during high-speed operation, which places high demands on the nozzle's materials, structure, and its compatibility with other components of the pick-and-place machine. The nozzle's structural design must consider how to ensure component stability during high-speed picking and placing, reducing component drops or misalignment. It must also consider how to pick up components of different sizes with minimal disassembly and reassembly of the nozzle, adapting to different component requirements and reducing wear and tear on components.

[0004] The pick-and-place machine nozzles in today's SMT production lines have the following main shortcomings:

[0005] 1. Clogging Issues: Dust, solder dross, adhesives, and debris from cutting components in the production environment can all enter the nozzle and cause clogging. A clogged nozzle will impede airflow, resulting in insufficient vacuum pressure and consequently, an inability to provide enough suction to pick up components.

[0006] 2. Air pressure issue: Currently, most suction nozzles used in the industry adopt a side-opening design for connecting the air tube. While this method facilitates installation and initial debugging, after repeated use, the connection between the air tube and the nozzle opening is subjected to continuous vibration. This can easily lead to loosening and sealing failure at the interface, resulting in gas leakage and insufficient suction to pick up components.

[0007] 3. Inconvenient Replacement: Currently, most SMT production lines are equipped with integrated nozzles. Due to the significant differences in the size and specifications of electronic components, corresponding nozzles must be used to ensure placement accuracy. Integrated nozzles make it difficult to flexibly adjust their structural dimensions. If different sized components need to be handled, operators can only frequently replace the entire nozzle, which is inconvenient for disassembly and maintenance. Utility Model Content

[0008] To address the problem of easy clogging of pick-and-place machine nozzles in existing technologies, this utility model provides a sealed spline assembly nozzle, including a locking block with a first through hole at its center. A hollow integral sleeve is installed below the locking block, and a sealing material is installed between the locking block and the integral sleeve. A hollow sliding sleeve is installed on the integral sleeve, and a nozzle is installed at the distal end of the sliding sleeve. The fluid channel of the nozzle is axially connected to the inner cavity of the sliding sleeve. The integral sleeve includes a boss with a hollow protrusion at the center of its top. A third through hole is provided at the center of the sealing material, and the protrusion passes through the third through hole and communicates with the first through hole. The bottom of the boss is connected to a hollow cylinder, and the inner cavity of the protrusion communicates with the inner cavity of the cylinder. The sliding sleeve is slidably fitted onto the cylinder, and its inner cavity communicates with the inner cavity of the cylinder.

[0009] As a further improvement of this utility model, the sliding sleeve is provided with symmetrical pin holes for installing fixing pins on both sides, and the cylinder body is provided with waist-shaped grooves on both sides opposite to the pin holes. The fixing pin is located in the pin hole, and the two sides of the fixing pin extend into the waist-shaped grooves on both sides of the cylinder body. The pin hole on the sliding sleeve cooperates with the waist-shaped groove through the fixing pin to achieve sliding guidance.

[0010] As a further improvement of this utility model, the nozzle of the sealed spline assembly also includes an elastic component, which is installed in the inner cavity of the cylinder.

[0011] As a further improvement of this utility model, the locking block has an opening groove on one side that communicates with the first through hole.

[0012] As a further improvement of this utility model, the locking block is provided with a first screw hole, which is symmetrically arranged on both sides of the first through hole.

[0013] As a further improvement of this utility model, the sealing gasket is also provided with a second through hole, which corresponds to the position of the first screw hole.

[0014] As a further improvement of this utility model, the nozzle of the sealing spline assembly further includes a first screw, and the locking block, the sealing gasket, and the integrated sleeve are locked by the first screw; the nozzle of the sealing spline assembly further includes a second screw, which is used to lock the locking block and the sealing spline shaft.

[0015] As a further improvement of this utility model, the elastic component is a compression spring.

[0016] As a further improvement of this utility model, the sealing material is a sealing gasket, the sealing gasket is tightly fitted with the locking block and the integrated sleeve, and the locking block, the sealing gasket and the integrated sleeve are detachable.

[0017] The beneficial effects of this utility model are: 1. Through structural optimization, the internal straight-through air pipe replaces the traditional external air pipe, which can effectively prevent air leakage and ensure the stable and reliable performance of the nozzle. In addition, the internal air path effectively reduces the space occupied by the machine compared with the external air path, giving the placement machine a more reasonable space plan; 2. The nozzle assembly is tightly connected to the sealing spline, which can effectively prevent various dust and debris in the machine production environment from entering the nozzle assembly, preventing blockage, maintaining smooth airflow, ensuring that the nozzle can firmly adsorb SMT components, and maintaining a stable adsorption force during the placement process; 3. The assembly nozzle is composed of three parts: the uppermost locking block, the middle integrated sleeve and sliding sleeve, and the lowermost nozzle. Each part can be easily disassembled, realizing quick-release maintenance when using different nozzles to handle different components. Attached Figure Description

[0018] Figure 1 This is an overall structural diagram of the nozzle of the sealing spline assembly of this utility model;

[0019] Figure 2 This is a longitudinal exploded view of the nozzle of the sealing spline assembly of this utility model;

[0020] Figure 3 This is a transverse exploded view of the nozzle of the sealing spline assembly of this utility model;

[0021] Figure 4 This is a structural diagram of the integrated sleeve of this utility model;

[0022] Attached Figure Descriptions: 1-Locking block, 2-Sealing gasket, 3-Integrated sleeve, 4-Compression spring, 5-Fixing pin, 6-Sliding sleeve, 7-Suction nozzle, 8-Protruding nozzle, 9-First through hole, 10-Opening groove, 11-Second screw hole, 12-Second through hole, 13-Boss, 14-Cylinder body, 15-Third through hole, 16-Oval groove, 17-Pin hole; Detailed Implementation

[0023] like Figure 1-3As shown, this utility model discloses a suction nozzle for a sealed spline assembly, comprising, from top to bottom, a locking block 1, a sealing gasket 2, and a hollow integral sleeve 3. A hollow sliding sleeve 6 is installed inside the integral sleeve 3, and the sliding sleeve 6 can slide axially up and down along the inner wall of the integral sleeve 3. A suction nozzle 7 is installed at the end of the sliding sleeve 6. A protruding nozzle 8 is provided at the end of the integral sleeve 3. The protruding nozzle 8 has a hollow internal structure for connection, air passage, and pipe routing. The locking block 1 is screwed to the integral sleeve 3 and then tightly connected to the sealed spline shaft. An air pipe is installed inside the sealed spline shaft, and the inner cavity of the sealed spline shaft is fitted around the protruding nozzle 8. When mounted on a wall, the end of the air tube presses against the top of the nozzle 8, achieving a tight connection and forming an internal air passage. The air tube is not part of the nozzle of the sealed spline assembly. The air tube and the spline hollow shaft are sleeved outside the nozzle 8, with air passing through the top of the inner cavity of the sealed spline shaft. The gas then flows through the nozzle 8 to the nozzle 7. The advantage of this design is that air enters the nozzle 7 directly from inside the assembly, replacing the traditional side-mounted external air passage. The tight connection via the sealed spline forms a closed space, effectively preventing dust and debris from entering the assembly and preventing gas leakage, while providing sufficient suction to pick up components. Furthermore, reducing the use of external air tubes makes the nozzle assembly structure more compact, effectively reducing the space occupied by the equipment.

[0024] The locking block 1 has a first through hole 9 in the middle and an opening groove 10 on one side that communicates with the first through hole 9, which facilitates adjustment and installation and prevents machining errors. First screw holes are symmetrically arranged on both sides of the first through hole 9. The screws include a first screw and a second screw. The integrated sleeve 3 has a second screw hole 11 corresponding to the first screw hole. The first screw extends into the first screw hole and the second screw hole 11 in sequence to lock the locking block 1 and the integrated sleeve 3. The locking block 1 has a third screw hole on its side. The second screw extends into the third screw hole to lock the locking block 1 and the sealing spline shaft. The sealing spline shaft is existing technology and will not be described in detail here.

[0025] The sealing gasket 2 is provided with a second through hole 12 and a third through hole 15 corresponding to the second screw hole 11. The protrusion 8 of the integrated sleeve 3 passes through the third through hole 15 and extends into the first through hole 9. The first screw passes through the first screw hole and the second through hole 12 in sequence and extends into the second screw hole 11, locking the locking block 1, the sealing gasket 2 and the integrated sleeve 3.

[0026] like Figure 4As shown, the integral sleeve 3 has a boss 13, the bottom of which is connected to the hollow cylinder 14. The boss 13 has a protruding nozzle 8 at its center, which is coaxially connected to the cylinder 14. The integral sleeve 3 has a second screw hole 11. The sliding sleeve 6 has symmetrically arranged pin holes 17 for installing fixing pins 5 on both sides. The cylinder 14 has symmetrically opened waist-shaped grooves 16 on both sides opposite to the pin holes 17. The fixing pin 5 passes through the waist-shaped groove 16 on one side of the cylinder 14 and extends into the pin hole 17 on the opposite side of the sliding sleeve 6. Then it passes through the pin hole 17 on the other side of the sliding sleeve 6 and extends into the waist-shaped groove 16 on the other side of the cylinder 14. The pin hole 17 on the sliding sleeve 6 cooperates with the waist-shaped groove 16 through the fixing pin 5 to achieve sliding guidance.

[0027] The sliding sleeve 6 is equipped with a compression spring 4. One end of the compression spring 4 is located in the inner cavity of the sliding sleeve 6, and the other end of the compression spring 4 is located in the inner cavity of the cylinder 14.

[0028] The suction nozzle 7 is mounted on the sliding sleeve 6 by screws. The suction nozzle 7 is existing technology and will not be described in detail here.

[0029] The locking block 1, sealing gasket 2, and integrated sleeve 3 are designed to clamp the sealing spline shaft to prevent air leakage. The hollow part of the sealing spline shaft is fitted into the protrusion 8 of the integrated sleeve 3, and then the locking block 1 is locked onto the integrated sleeve 3. The sealing gasket 2 is added in the middle to prevent air leakage. The locking block 1 is tightened onto the sealing spline shaft with screws on the locking side.

[0030] The first part of the nozzle of the sealing spline assembly disclosed in this utility model is a locking block 1.

[0031] The second part of the nozzle of the sealed spline assembly disclosed in this utility model is a combination of a sliding sleeve 6 and an integral sleeve 3, which are tightly connected by a fixing pin 5. A compression spring 4 is installed inside, and it is connected to the locking block 1 of the first part through a sealing gasket 2. The advantage of this design is that the sealing gasket 2 provides sufficient cushioning for the nozzle 7 during operation, while the compression spring 4 effectively absorbs the impact force generated by mechanical movement, reducing the impact of vibration on the placement process, thereby improving placement accuracy. Precise placement can effectively avoid component damage and positional deviation, improving product quality and production efficiency, and reducing production costs.

[0032] The third part of the sealing spline assembly nozzle disclosed in this utility model is a replaceable nozzle. This nozzle's structural design fully considers the convenience and flexibility required for practical use. It can be quickly and securely installed on the assembly simply by tightening a screw. This design feature allows operators to change different types of nozzles for components of different sizes to meet the needs of different components, achieving easy and quick disassembly and flexible application to a variety of products.

[0033] The sealing spline assembly nozzle disclosed in this utility model has the following features and advantages:

[0034] 1. Through structural optimization, the internal straight air pipe replaces the traditional external air pipe, which can effectively prevent air leakage and ensure the stable and reliable performance of the nozzle. In addition, the internal air circuit effectively reduces the space occupied by the machine compared with the external air circuit, allowing for a more reasonable space planning for the placement machine.

[0035] 2. The nozzle assembly is tightly connected to the sealing spline, which can effectively prevent various dust and debris in the machine production environment from entering the nozzle assembly, preventing blockage, maintaining smooth airflow, ensuring that the nozzle can firmly adsorb SMT components, and maintaining stable adsorption force during the placement process.

[0036] 3. The assembly nozzle consists of three parts: the uppermost locking block, the middle integrated sleeve and sliding sleeve, and the lowermost nozzle. Each part can be easily disassembled, enabling quick-release maintenance by using different nozzles when handling different components.

[0037] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A nozzle for a sealed spline assembly, characterized in that: Includes a locking block (1) with a first through hole (9) at its center. A hollow integral sleeve (3) is installed below the locking block (1). A sealing material is installed between the locking block (1) and the integral sleeve (3). A hollow sliding sleeve (6) is installed on the integral sleeve (3). A suction nozzle (7) is detachably installed at the distal end of the sliding sleeve (6). The fluid channel of the suction nozzle (7) is axially connected to the inner cavity of the sliding sleeve (6). The integral sleeve (3) includes a boss ( 13), the top center of the boss (13) is provided with a hollow protrusion (8), the sealing material is provided with a third through hole (15), the protrusion (8) passes through the third through hole (15) and communicates with the first through hole (9), the bottom of the boss (13) is connected to the hollow cylinder (14), the inner cavity of the protrusion (8) communicates with the inner cavity of the cylinder (14), the sliding sleeve (6) is slidably sleeved on the cylinder (14), and its inner cavity communicates with the inner cavity of the cylinder (14).

2. The sealing spline assembly nozzle according to claim 1, characterized in that: The sliding sleeve (6) has symmetrically arranged pin holes (17) on both sides for installing fixing pins (5). The cylinder (14) has symmetrically opened waist-shaped grooves (16) on both sides relative to the pin holes (17). The fixing pins (5) are located in the pin holes (17). The ends of the fixing pins (5) extend into the waist-shaped grooves (16) on both sides of the cylinder (14). The pin holes (17) on the sliding sleeve (6) cooperate with the waist-shaped grooves (16) through the fixing pins (5) to achieve sliding guidance.

3. The sealing spline assembly nozzle according to claim 2, characterized in that: The nozzle of the sealed spline assembly also includes an elastic component, which is installed in the inner cavity of the cylinder (14).

4. The nozzle for the sealed spline assembly according to claim 1, characterized in that: The locking block (1) has an opening groove (10) on one side that communicates with the first through hole (9).

5. The nozzle for the sealed spline assembly according to claim 1, characterized in that: The locking block (1) is provided with a first screw hole, which is symmetrically arranged on both sides of the first through hole (9).

6. The nozzle for the sealed spline assembly according to claim 5, characterized in that: The sealing material is also provided with a second through hole (12), which corresponds to the position of the first screw hole.

7. The nozzle for the sealed spline assembly according to claim 1, characterized in that: The nozzle of the sealed spline assembly also includes a first screw, the sealing material is a sealing gasket (2), and the locking block (1), the sealing gasket (2), and the integrated sleeve (3) are locked by the first screw; the nozzle of the sealed spline assembly also includes a second screw (11), which is used to lock the locking block (1) to the sealed spline shaft.

8. The nozzle for the sealed spline assembly according to claim 3, characterized in that: The elastic component is a compression spring (4).

9. The nozzle for the sealed spline assembly according to claim 7, characterized in that: The sealing gasket (2) is tightly fitted with the locking block (1) and the integrated sleeve (3), and the locking block (1), the sealing gasket (2), and the integrated sleeve (3) are detachable.

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