Automatic flange positioning and clamping mechanism

Abstract

The utility model belongs to the field of flange machining, and provides an automatic flange positioning and clamping mechanism which comprises a base, a machining table is arranged on the base, the machining table comprises a table plate provided with a plurality of guide grooves in advance, a plurality of clamping assemblies are arranged in the guide grooves in a sliding mode, the clamping assemblies can move in the radial direction of the table plate, and the clamping assemblies are arranged on the base. The device is used for automatically positioning and clamping a flange ring. An adjusting assembly is arranged at the bottom of the base and comprises a two-way screw rod arranged on the platen, and a synchronizing mechanism is arranged on the two-way screw rod and used for driving the multiple clamping assemblies to synchronously move in the radial direction; the driving motor drives the two-way screw to rotate, then the driving block is driven to drive the synchronous unit to move, the guide rail and the guide groove are matched and restrained, the positioning column moves in the radial direction of the guide groove and the table plate, then the flange ring is driven to be automatically centered and positioned, and the flange ring is rapidly subjected to external expansion positioning and tight supporting operation; the device has the advantages of simple structure and high positioning precision.

Description

Technical Field

[0001] This utility model belongs to the field of flange processing, specifically an automatic flange positioning and clamping mechanism. Background Technology

[0002] With the continuous expansion of industrial production, the demand for large flanges has increased in both quantity and precision. Traditional flange positioning and clamping devices mostly rely on manual operation or simple mechanical structures, which not only consume a lot of manpower but also make it difficult to guarantee positioning accuracy, and the clamping process is also quite cumbersome.

[0003] Traditional positioning and clamping methods require workers to manually adjust the fixture position and repeatedly center the flange, a time-consuming process that significantly impacts processing speed. For large flanges, their weight and size make manual operation difficult and increase positioning time costs. While clamping mechanisms using cylinders or hydraulic cylinders for multi-point synchronous positioning offer advantages, ensuring synchronization between different drive sources is challenging in practical applications. This is due to various factors, including the manufacturing precision of the cylinders themselves, internal friction, load differences, and pressure fluctuations in hydraulic oil or compressed air, all of which can lead to asynchronous movements at different drive points. Furthermore, to ensure normal operation and positioning accuracy, periodic calibration and adjustment are necessary, undoubtedly increasing maintenance costs and downtime, and causing inconvenience to production. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides an automatic flange positioning and clamping mechanism to solve the problems of low positioning efficiency and poor clamping stability of large flanges in the prior art.

[0005] An automatic flange positioning and clamping mechanism includes a base, on which a processing table is mounted. The processing table includes a plate with a plurality of guide grooves. A plurality of clamping components are slidably disposed within the guide grooves and are movable radially along the plate for automatic positioning and clamping of flange rings. An adjusting component is disposed at the bottom of the base. The adjusting component includes a bidirectional screw mounted on the plate and a synchronizing mechanism mounted on the bidirectional screw for driving the plurality of clamping components to move synchronously radially.

[0006] Preferably, the platform is provided with a plurality of support balls for rolling support flange ring.

[0007] Preferably, the clamping assembly includes a positioning post with a flexible sleeve on its surface. The positioning post includes a column with an internal cavity. A piston plate is slidably disposed inside the column. A top post is disposed on the side of the piston plate away from the center point of the platform. The end of the top post slides through the column and the flexible sleeve and reaches the outside of the flexible sleeve.

[0008] Preferably, the number of clamping components is three or four, and both the column and the flexible sleeve are provided with adsorption holes for adsorbing the inner wall of the flange ring.

[0009] Preferably, the synchronization mechanism includes a bidirectional screw rotatably mounted on a platform, one end of which is connected to a drive motor, and both ends of the bidirectional screw are threaded with drive blocks. The platform is also provided with a slide rail, the end of which passes through the two drive blocks and is slidably connected to them.

[0010] Preferably, the platform is further provided with a plurality of synchronization units. Each synchronization unit includes a guide rail disposed on a corresponding drive block. Two opposing or opposite sliding blocks are disposed on the guide rail. The positioning post is fixedly connected to the corresponding sliding block and the drive block or the corresponding sliding block, respectively.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. This utility model utilizes the combined use of a processing table, clamping components, and adjusting components. A drive motor drives a bidirectional screw to rotate, which in turn drives a drive block to move a synchronous unit. Through the constraint of the guide rail and guide groove, the positioning pin moves radially along the guide groove and the table, thereby automatically centering and positioning the flange ring, achieving rapid outward expansion, positioning, and tightening of the flange ring.

[0013] 2. This utility model utilizes the combined use of positioning pins, flexible sleeves, and adsorption holes. When the flexible sleeve is in contact with the inner wall of the flange ring, the flange ring compresses and deforms the flexible sleeve, causing the adsorption holes to fit against the inner wall of the flange ring. At the same time, the inner wall of the flange ring compresses the top pin, pushing the piston plate to move. This causes a change in the air pressure on both sides of the piston plate in the cavity, creating a negative pressure on the side of the adsorption hole, which adsorbs and fixes the piston, increasing positioning stability. Attached Figure Description

[0014] Figure 1 This is a first-view perspective three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a second-view perspective three-dimensional structural diagram of the present invention;

[0016] Figure 3 This is a third-view three-dimensional structural diagram of the present invention;

[0017] Figure 4 This is a three-dimensional structural diagram of the clamping component in this utility model.

[0018] In the picture:

[0019] 1. Base; 2. Processing table; 201. Table plate; 202. Supporting ball bearings; 3. Clamping assembly; 301. Positioning pin; 3011. Column; 3012. Piston plate; 3013. Top pin; 302. Flexible sleeve; 4. Adjustment assembly; 401. Bidirectional screw; 4011. First threaded rod; 4012. Second threaded rod; 402. Drive block; 4021. First threaded block; 4022. First threaded block; 403. Synchronization unit; 4031. Guide rail; 4032. Slider; 5. Guide groove; 6. Drive motor; 7. Slide rail; 8. Adsorption hole. Detailed Implementation

[0020] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0021] As attached Figure 1 To be continued Figure 4 As shown:

[0022] This utility model provides an automatic flange positioning and clamping mechanism, including a base 1, a processing table 2, a clamping assembly 3, and an adjusting assembly 4.

[0023] As attached Figure 1 To be continued Figure 4 As shown: Base 1 is made of high-strength steel and formed by welding or casting processes. It can withstand the weight of processing table 2, clamping assembly 3, and adjusting assembly 4, as well as the forces generated during positioning and clamping. Mounting holes and slots for installing processing table 2 are provided on base 1, facilitating subsequent maintenance and component replacement.

[0024] The processing table 2 is mounted on the base 1 and consists of a table plate 201 and supporting balls 202. The table plate 201 is made of high-quality metal sheet, and guide grooves 5 are machined into the table plate 201. The dimensions of the guide grooves 5 match the positioning pins 301 of the clamping assembly 3, ensuring that the positioning pins 301 can slide smoothly within the guide grooves 5, providing precise guidance for the radial movement of the clamping assembly 3.

[0025] As attached Figure 1 As shown: The support balls 202 are fixed to the platform 201 by the mounting base, and are made of wear-resistant materials with good rolling performance. When the operator places the flange ring on the platform 201, the support balls 202 provide rolling support for the flange ring, greatly reducing the friction during the placement and movement of the flange ring, and facilitating subsequent adjustment of the flange ring's position.

[0026] As attached Figure 4As shown: The clamping assembly 3 is slidably disposed within the guide groove 5 of the processing table 2, and consists of a positioning post 301 and a flexible sleeve 302. The post 3011 of the positioning post 301 is made of metal tubing, and a cavity is machined into the post 3011. The piston plate 3012 and the top post 3013 are installed in the cavity. The piston plate 3012 can slide within the cavity of the post 3011, and the end of the top post 3013 slides through the post 3011 and the flexible sleeve 302, reaching the outside of the flexible sleeve 302.

[0027] As attached Figure 3 To be continued Figure 4 As shown: The flexible sleeve 302 is made of a soft and elastic material such as rubber or silicone, and is fitted onto the surface of the positioning post 301 by interference fit or adhesive bonding. When the positioning post 301 contacts the inner wall of the flange ring, the flexible sleeve 302 can deform, preventing the positioning post 301 from directly contacting the flange ring, effectively reducing damage to the flange surface and protecting the appearance and performance of the flange. Both the positioning post 301 and the flexible sleeve 302 are provided with suction holes 8. When the inner wall of the flange ring squeezes the top post 3013, pushing the piston plate 3012 to move in the cavity of the post 3011, a negative pressure is formed on one side of the suction hole 8, which adheres to the inner wall of the flange ring. The flange ring is fixed by suction through negative pressure, which further enhances the stability of positioning and ensures the smooth progress of processing and assembly.

[0028] As attached Figure 1 To be continued Figure 4 As shown: The adjustment assembly 4 is installed at the bottom of the base 1 and consists of a bidirectional screw 401, a drive motor 6, threaded blocks, a slide rail 7, and a synchronization unit 403. The bidirectional screw 401 is rotatably mounted on the platform 201, and one end is connected to the drive motor 6 via a coupling. The two ends of the bidirectional screw 401 are respectively provided with a first threaded rod 4011 and a second threaded rod 4012, and are respectively threadedly fitted with a first threaded block 4021 and a second threaded block 4022. Since the thread directions at both ends of the bidirectional screw 401 are opposite, when the drive motor 6 drives the bidirectional screw 401 to rotate, under the constraint of the slide rail 7, the first threaded block 4021 and the second threaded block 4022 will move towards or away from each other along the axial direction of the bidirectional screw 401. The slide rail 7 is mounted on the platform 201, and its end passes through the first threaded block 4021 and the second threaded block 4022, and is slidably connected to them. The slide rail 7 constrains and guides the movement of the threaded block, ensuring the stability of the threaded block's movement and preventing it from shifting or shaking during the movement.

[0029] The platform 201 is also equipped with several synchronization units 403. Each synchronization unit 403 includes a guide rail 4031 mounted on a corresponding threaded block, and two sliders 4032 that can move in opposite directions on the guide rail 4031. When there are three clamping components 3, there is one synchronization unit 403. The thread pitch ratio of the first threaded rod 4011 and the second threaded rod 4012 is 1:2. The three positioning pins 301 are bolted to the two sliders 4032 and the second threaded block 4022, respectively. When there are four clamping components 3, the thread pitch ratio of the first threaded rod 4011 and the second threaded rod 4012 is 1:1. There are two synchronization units 403. The three positioning pins 301 are bolted to the four corresponding sliders 4032, respectively. The movement of the threaded block drives the guide rail 4031 and the slider 4032 to move, which in turn drives the positioning pin 301 to move radially along the guide groove 5 and the platform 201, thereby ensuring that multiple clamping components 3 can move accurately and synchronously, and realize the automatic centering and positioning of the flange ring.

[0030] Working principle: The operator places the flange ring on the platform 201, and the support ball bearings 202 provide rolling support for the flange ring, facilitating adjustment of the flange ring's position. At this time, the clamping assembly 3 is in its initial position and has not yet clamped the flange ring.

[0031] The operator starts the drive motor 6, which drives the bidirectional screw 401 to rotate. The threads at both ends of the bidirectional screw 401 engage with the first threaded block 4021 and the second threaded block 4022. Under the constraint of the slide rail 7, the first threaded block 4021 and the second threaded block 4022 move towards or away from each other. The movement of the threaded blocks drives the positioning pins 301 to move radially along the guide groove 5 and the platform 201 via the guide rail 4031 and the slider 4032. Multiple positioning pins 301 move synchronously, pushing the flange ring gradually towards the center position of the platform 201, realizing the automatic centering and positioning of the flange ring.

[0032] When the flexible sleeve 302 on the positioning post 301 contacts the inner wall of the flange ring, as the positioning post 301 continues to move, the flange ring squeezes the flexible sleeve 302 to deform it, and at the same time squeezes the top post 3013, pushing the piston plate 3012 to move in the cavity of the post 3011, so that a negative pressure is formed on one side of the adsorption hole 8, which adheres to the inner wall of the flange ring. The flange ring is fixed by adsorption through negative pressure, thereby realizing the outward expansion positioning and tightening of the flange ring and increasing the stability of the positioning.

[0033] The embodiments of this utility model are given for the purpose of illustration and description. Although embodiments of this utility model have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the utility model. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this utility model.

Claims

1. A flange automatic positioning and clamping mechanism comprising a base (1), characterized in that: The base (1) is provided with a processing table (2), the processing table (2) includes a table plate (201) provided with a plurality of guide grooves (5), a plurality of clamping assemblies (3) are slidably arranged in the guide grooves (5), and the clamping assemblies (3) can move radially along the table plate (201) and are used for automatic positioning and clamping of the flange ring; the bottom of the base (1) is provided with an adjusting assembly (4), the adjusting assembly (4) includes a bidirectional screw (401) arranged on the table plate (201), and a synchronous mechanism is arranged on the bidirectional screw (401) and used for driving a plurality of clamping assemblies (3) to move synchronously along the radial direction.

2. The automatic positioning and clamping mechanism for flange as claimed in claim 1 wherein: A plurality of supporting balls (202) are rollingly arranged on the table plate (201) and are used for rollingly supporting the flange ring.

3. The automatic flange positioning and clamping mechanism according to claim 1, wherein: The clamping assembly (3) includes a positioning column (301) provided with a flexible sleeve (302), the positioning column (301) includes a column body (3011) provided with a cavity, a piston plate (3012) is slidably arranged in the column body (3011), a jacking column (3013) is arranged on the piston plate (3012) and away from a center point of the table plate (201), and an end of the jacking column (3013) slidably penetrates through the column body (3011) and the flexible sleeve (302) and reaches an outer side of the flexible sleeve (302).

4. The automatic flange positioning and clamping mechanism according to claim 3, wherein: The number of the clamping assemblies (3) is three or four, and the column body (3011) and the flexible sleeve (302) are both provided with adsorbing holes (8) and are used for adsorbing the inner wall of the flange ring.

5. The automatic flange positioning and clamping mechanism as claimed in claim 4, wherein: The synchronous mechanism includes a bidirectional screw (401) rotatably arranged on the table plate (201), one end of the bidirectional screw (401) is transmissionally connected with a driving motor (6), both ends of the bidirectional screw (401) are threadedly sleeved with driving blocks (402), and the table plate (201) is further provided with slide rails (7), and ends of the slide rails (7) penetrate through the two driving blocks (402) and are slidably connected with the driving blocks (402).

6. The automatic flange positioning and clamping mechanism as claimed in claim 5, wherein: The table plate (201) is further provided with a plurality of synchronous units (403), the synchronous unit (403) includes a guide rail (4031) arranged on the corresponding driving block (402), two opposite or opposite moving sliding blocks (4032) are arranged on the guide rail (4031), and the positioning column (301) is fixedly connected with the corresponding sliding block (4032) and the driving block (402) or the corresponding sliding block (4032).

Images