Vacuum adsorption clamping tool
By using vacuum adsorption clamping fixtures to achieve multi-station clamping and positioning, the problem of inaccurate positioning of traditional fixtures is solved, thereby improving processing efficiency and accuracy and reducing production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-05
- Publication Date
- 2026-08-04
AI Technical Summary
Traditional fixtures are difficult to accurately position the surface of cast blanks, resulting in low processing efficiency and accumulated accuracy errors, which prevents full utilization of processing equipment capabilities and affects product quality.
The vacuum adsorption clamping fixture is adopted. Through the vacuum adsorption unit and multi-station design, the product can be stably clamped and processed in multiple stations. The adsorption station that matches the product shape can be used for one-time multi-station clamping and positioning.
It improves processing efficiency, reduces clamping and alignment time, reduces accuracy errors, improves product quality, and reduces production costs.
Smart Images
Figure CN224587548U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tooling and fixture technology, specifically a vacuum adsorption clamping tooling. Background Technology
[0002] In the field of machining, traditional clamping and positioning methods present numerous problems for products whose locating surface is the surface of a cast blank. Due to the unevenness and significant dimensional deviations of the cast blank surface, precise positioning using ordinary fixtures is difficult to achieve, often requiring considerable time for alignment and adjustment, resulting in low machining efficiency. For example, for products like… Figure 7 When machining the end cap shown, the clamping device uses a pressure plate to fix one side of the end cap while machining the other side, and then the positions are exchanged, resulting in low machining efficiency. Furthermore, the aforementioned pressure plate clamping typically only allows for single-station clamping, failing to fully utilize the machining equipment's capabilities and further limiting production efficiency. In addition, multiple clamping of the end cap blank can easily lead to the accumulation of machining accuracy errors, affecting product quality.
[0003] Therefore, in order to address the above issues, there is an urgent need for tooling that can stably clamp products during the finishing process of products such as blanks with sealed caps, so as to avoid the need for multiple clamping operations of traditional fixtures and improve processing efficiency. Utility Model Content
[0004] The problem to be solved is to provide a tooling for stable clamping of products such as blanks with sealed caps, so as to improve processing efficiency.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a vacuum adsorption clamping fixture, comprising a fixture body, the fixture body including a base plate, a suction cup disposed on the base plate, a working plate disposed on the suction cup, and a vacuum adsorption unit connected to the suction cup; the suction cup is provided with a first vacuum chamber and a second vacuum chamber, and the vacuum adsorption unit is respectively connected to the first vacuum chamber and the second vacuum chamber; the working plate is provided with multiple adsorption stations matching the shape of the product, each adsorption station including an adsorption hole and an elastic sealing ring located on the outer periphery of the adsorption hole; the adsorption hole is connected to the corresponding vacuum chamber below it; the vacuum adsorption unit includes a vacuum generator, the vacuum generator being connected to the first vacuum chamber and the second vacuum chamber inside the suction cup through a pipeline; the suction cup is also provided with a pressure gauge for monitoring the pressure of the vacuum chamber; the suction cup also includes a first buffer chamber and a second buffer chamber, the first buffer chamber and the second buffer chamber being respectively connected to the first vacuum chamber and the second vacuum chamber and located on the side where the pressure gauge is installed.
[0006] Furthermore, the first vacuum chamber and the second vacuum chamber are respectively provided with sealing groove one and sealing groove two around their periphery, and sealing strips are installed in sealing groove one and sealing groove two.
[0007] Furthermore, there are no fewer than two adsorption pores on the adsorption station.
[0008] Furthermore, the vacuum adsorption unit also includes a first pipeline and a second pipeline connected in parallel. A first valve is provided between the first pipeline and the first vacuum chamber, and a second valve is provided between the second pipeline and the second vacuum chamber. The first valve and the second valve are located on the suction cup.
[0009] Furthermore, both the first and second valves are manual slide valves, with the model number HSY-10B.
[0010] Furthermore, the vacuum generator model is EV-30HS.
[0011] Compared with the prior art, this utility model provides a vacuum adsorption clamping fixture, which has the following beneficial effects:
[0012] 1. Improve processing efficiency: The work plate enables multi-station clamping and positioning processing in one go. Compared with the traditional single-station clamping method, multiple products can be processed at the same time, reducing clamping and alignment time and greatly improving production efficiency.
[0013] 2. Improved machining accuracy: The fixture utilizes the shape of the product blank to design the work plate's adsorption station, reducing the accumulation of accuracy errors caused by multiple clamping operations and ensuring the product's machining accuracy. Testing has shown that products machined using this fixture have dimensional accuracy errors controlled within process requirements, resulting in a significant improvement in product quality.
[0014] 3. Reduce production costs: While improving production efficiency and product quality, it reduces labor costs and scrap rates, thereby lowering the company's production costs. Attached Figure Description
[0015] Figure 1 This is a schematic diagram illustrating the use of this utility model;
[0016] Figure 2 This is a schematic diagram of the tooling of this utility model;
[0017] Figure 3 This is an exploded view of the tooling of this utility model;
[0018] Figure 4 This is a schematic diagram of the suction cup structure of this utility model;
[0019] Figure 5 This is a schematic diagram of the working board structure of this utility model;
[0020] Figure 6 This is a cross-sectional schematic diagram of the present invention;
[0021] Figure 7 This is a schematic diagram of the end cap placed on the tooling of this utility model;
[0022] Explanation of reference numerals in the attached drawings: 1. Workbench; 2. Tooling body; 3. Base plate; 31. First bolt hole; 32. Second bolt hole; 4. Suction cup; 41. First vacuum chamber; 411. Sealing groove one; 42. Second vacuum chamber; 421. Sealing groove two; 43. Connecting hole one; 44. Connecting hole two; 45. Connecting hole three; 46. Connecting hole four; 47. First buffer chamber; 48. Second buffer chamber; 5. Working plate; 51. Adsorption station; 52. Adsorption hole; 53. Elastic sealing ring; 6. Vacuum adsorption unit; 61. Vacuum generator; 62. First pipeline; 63. First valve; 64. Second pipeline; 65. Second valve; 7. First pressure gauge; 8. Second pressure gauge; 9. First bolt; 10. Second bolt; 11. End cap. Detailed Implementation
[0023] The technical solutions of the present utility model will now be described with reference to the accompanying drawings in the embodiments of the present utility model:
[0024] To address the problems mentioned in the background art, this utility model provides a vacuum adsorption clamping fixture, as shown in the figure, comprising a fixture body 2. The fixture body 2 includes a base plate 3, a suction cup 4, a working plate 5, and a vacuum adsorption unit 6. The suction cup 4 is disposed on the base plate 3, and the working plate 5 is disposed on the suction cup 4. The vacuum adsorption unit 6 is connected to the suction cup 4. The suction cup 4 is provided with a first vacuum chamber 41, a second vacuum chamber 42, a first buffer chamber 47, and a second buffer chamber 48. The first buffer chamber 47 and the second buffer chamber 48 are respectively connected to the first vacuum chamber 41 and the second vacuum chamber 42. The suction cup 4 is also provided with a first pressure gauge 7 and a second pressure gauge 8. The first pressure gauge 7 and the second pressure gauge 8 respectively measure the pressure in the first buffer chamber 47 and the second buffer chamber 48. The first vacuum chamber 41 and the second vacuum chamber 42 are provided with a sealing groove 411 and a sealing groove 421 around their periphery. The sealing strips of the sealing groove 411 and the sealing groove 421 are tightly fitted with the working plate 5 to form a seal above the first vacuum chamber 41 and the second vacuum chamber 42. On the other side of the working plate 5, there are multiple adsorption stations 51 that match the shape of the product. Each adsorption station 51 includes an adsorption hole 52 and an elastic sealing ring 53 located on the outer periphery of the adsorption hole 52. The adsorption hole 52 is connected to the corresponding vacuum chamber below it. There are no fewer than two adsorption holes 52 on each adsorption station 51, and the adsorption holes 52 transmit the adsorption force to the bottom surface of the product.
[0025] The vacuum adsorption unit 6 independently evacuates the first vacuum chamber 41 and the second vacuum chamber 42, providing controllable adsorption force to replace the traditional mechanical pressure plate. The vacuum adsorption unit 6 includes a vacuum generator 61, a first pipe 62, and a second pipe 64. The vacuum generator 61 is connected to the first vacuum chamber 41 via the first pipe 62 and to the second vacuum chamber 42 via the second pipe 64. The first pipe 62 and the second pipe 64 are connected in parallel. A first valve 63 is installed between the first pipe 62 and the first vacuum chamber 41, and a second valve 65 is installed between the second pipe 64 and the second vacuum chamber 42. The first valve 63 and the second valve 65 are located on the suction cup 4. Both the first valve 63 and the second valve 65 are manual sliding valves, model HSY-10B. The vacuum generator 61 is model EV-30HS. The manual sliding valves allow manual control of the opening and closing of each pipe, enabling independent operation of the first vacuum chamber 41 and the second vacuum chamber 42 or emergency release.
[0026] This utility model of tooling fixture is suitable for machining products whose positioning surface is a cast blank. It can achieve multi-station clamping and positioning machining in one operation based on the shape of the blank. This improves machining efficiency and product machining accuracy, and reduces production costs.
[0027] For example, the tooling for processing the cap 11 is as follows: The main body 2 of the tooling is made of high-strength aluminum alloy, which has the advantages of light weight, high strength, and corrosion resistance, ensuring the stability of the tooling during long-term use. The base plate 3 is provided with several first bolt holes 31 and multiple second bolt holes 32. The first bolt holes 31 are used to connect the base plate 3 to the worktable 1 after the first bolt 9 passes through; the second bolt holes 32 are used to connect the base plate 3, suction cup 4, and working plate 5 together after the second bolt 10 is inserted; thus, when the tooling is transferred, only the first bolt 9 needs to be removed. The suction cup 4 is provided with connection hole 1 43, connection hole 2 44, connection hole 3 45, and connection hole 46 on one side of the vacuum adsorption unit 6. Connection hole 1 43 is used to install the first pressure gauge 7, connection hole 46 is used to install the second pressure gauge 8, connection hole 2 44 is used to install the first valve 63, and connection hole 3 45 is used to install the second valve 65. The working plate 5 has 18 independent adsorption stations 51 distributed on its surface. Nine adsorption stations 51 on one side correspond to the first vacuum chamber 41, and the other nine adsorption stations 51 correspond to the second vacuum chamber 42. Each adsorption station 51 includes an adsorption hole 52 and an elastic sealing ring 53. The adsorption stations 51 are made of highly elastic and wear-resistant silicone material, and their shape is designed according to the contour characteristics of the casting blank surface of the end cap 11, which can better fit the blank surface and improve the adsorption effect. The elastic sealing ring 53 is installed between the adsorption station 51 and the end cap 11 to effectively prevent vacuum leakage and enhance the adsorption force. The position and size of the adsorption station 51 can be precisely designed according to the blank shape of different products. When clamping the end cap 11 product, the blank part of the product is placed in the corresponding adsorption station 51 to ensure that the product's position on the fixture is relatively fixed. At the same time, combined with the adsorption force of the suction cup 4, the product is stably clamped. This design can achieve the clamping of multiple products at one time, and each product can be processed at its own station, which greatly improves the processing efficiency.
[0028] The vacuum adsorption unit 6 includes a vacuum generator 61, a first pipe 62, a first valve 63, a second pipe 64, and a second valve 65. One end of the first pipe 62 and the second pipe 64 are connected to the first vacuum chamber 41 and the second vacuum chamber 42 inside the suction cup 4, respectively, and the other end of the first pipe 62 and the second pipe 64 are connected to the vacuum generator 61. The vacuum generator 61 generates vacuum suction, which is transmitted to the first vacuum chamber 41 and the second vacuum chamber 42 through the first pipe 62 and the second pipe 64, and then to the adsorption station 51. The first pressure gauge 7 and the second pressure gauge 8 monitor the pressure of the first vacuum chamber 41 and the second vacuum chamber 42 in real time and feed the pressure signal back to the controller. The controller controls the opening and closing of the solenoid valve according to the preset pressure value to achieve precise adjustment of the vacuum system pressure. When the vacuum level is lower than the set value, the controller controls the solenoid valve to open and start the vacuum generator to supplement the vacuum; when the vacuum level reaches the set value, the controller controls the solenoid valve to close and stop the vacuum generator from working, so as to save energy and ensure the stability of adsorption.
[0029] The process of using this utility model includes tooling installation, product clamping, processing, and tooling maintenance. Taking the processing of the end cap 11 as an example, the specific details are as follows:
[0030] Tooling installation: Install the main body 2 of the tooling on the workbench 1 of the processing equipment, and ensure that the tooling is securely installed by means of the first bolt 9 or other fixing methods. Connect the first pipeline 62 and the second pipeline 64 to the first vacuum chamber 41 and the second vacuum chamber 42 through the first valve 63 and the second valve 65, and install the first pressure gauge 7 and the second pressure gauge 8.
[0031] Product clamping: Place the cast blank end cap 11 to be processed into the adsorption station 51 of the tooling. By turning on the vacuum generator 61, the end cap 11, the elastic sealing ring 53, and the lower plane of the adsorption station 51 are in full contact, so that the first vacuum chamber 41 and the second vacuum chamber 42 form a closed sealing chamber; the adsorption station 51 begins to adsorb the end cap 11. Observe the values of the first pressure gauge 7 and the second pressure gauge 8 to ensure that the vacuum degree reaches the set value to ensure that the product is firmly clamped.
[0032] Processing procedure: After the cap 11 is clamped, start the processing equipment for processing. During processing, observe the values of the first pressure gauge 7 and the second pressure gauge 8, as well as the processing status of the product, in real time. If any abnormalities occur, such as a drop in vacuum or product loosening, stop processing immediately, check the cause, and take appropriate action. After processing is complete, turn off the vacuum generator 61 and remove the processed product.
[0033] Tooling Maintenance: Regularly clean and maintain the tooling, removing oil, iron filings, and other impurities from the tooling surface and adsorption station 51 to prevent impurities from entering the vacuum adsorption unit 6 and affecting the adsorption effect. Check the elastic sealing gasket 53 of adsorption station 51 for damage; replace it promptly if damaged. Regularly check the first pipeline 62, second pipeline 64, first valve 63, second valve 65, and other components for proper functioning; repair or replace them promptly if any malfunctions are found.
[0034] If conventional clamping with a pressure plate is used, clamping a single product requires at least 35 seconds to tighten screws using the pressure plate, totaling about one minute for two processes. However, using this new fixture, the vacuum suction cups complete the process in just 10 seconds. If a shift produces 100 pieces, clamping would have taken 100 minutes, but now it only takes 16.6 minutes. This demonstrates a significant efficiency improvement. This new clamping fixture achieves simultaneous clamping of multiple casting blanks using a customized adsorption station 51 on the working plate 5. The suction cup 4 uses the vacuum adsorption unit 6 to adsorb the products on the adsorption station 51, effectively solving the problem of low positioning and processing efficiency in traditional fixtures. Compared to traditional pressure plate clamping, processing efficiency is increased by more than three times, accuracy errors are reduced, and labor costs are significantly lowered.
[0035] The above embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.
Claims
1. A vacuum adsorption clamping fixture, characterized in that: The fixture includes a main body (2), which includes a base plate (3), a suction cup (4) on the base plate (3), a working plate (5) on the suction cup (4), and a vacuum adsorption unit (6) connected to the suction cup (4). The suction cup (4) has a first vacuum chamber (41) and a second vacuum chamber (42), and the vacuum adsorption unit (6) is connected to the first vacuum chamber (41) and the second vacuum chamber (42) respectively. The working plate (5) has multiple adsorption stations (51) that match the shape of the product. Each adsorption station (51) includes an adsorption hole (52) and an elastic dense structure located on the periphery of the adsorption hole (52). The sealing ring (53) is connected to the vacuum chamber below it. The vacuum adsorption unit (6) includes a vacuum generator (61), which is connected to the first vacuum chamber (41) and the second vacuum chamber (42) inside the suction cup (4) through a pipeline. The suction cup (4) is also equipped with a pressure gauge to monitor the pressure of the vacuum chamber. The suction cup (4) also includes a first buffer chamber (47) and a second buffer chamber (48), which are connected to the first vacuum chamber (41) and the second vacuum chamber (42) respectively and are located on the side where the pressure gauge is installed.
2. The vacuum adsorption clamping fixture as described in claim 1, characterized in that: The first vacuum chamber (41) and the second vacuum chamber (42) are respectively provided with sealing groove one (411) and sealing groove two (421) around their periphery, and sealing strips are provided in sealing groove one (411) and sealing groove two (421).
3. The vacuum adsorption clamping fixture as described in claim 1, characterized in that: There are no fewer than two adsorption holes (52) on the adsorption station (51).
4. The vacuum adsorption clamping fixture as described in claim 2 or 3, characterized in that: The vacuum adsorption unit (6) also includes a first pipeline (62) and a second pipeline (64) connected in parallel. A first valve (63) is provided between the first pipeline (62) and the first vacuum chamber (41), and a second valve (65) is provided between the second pipeline (64) and the second vacuum chamber (42). The first valve (63) and the second valve (65) are located on the suction cup (4).
5. The vacuum adsorption clamping fixture as described in claim 4, characterized in that: Both the first valve (63) and the second valve (65) are manual sliding valves, with the model number being HSY-10B.
6. The vacuum adsorption clamping fixture as described in claim 1, characterized in that: The vacuum generator (61) is model EV-30HS.