Workpiece fixing device
Through the petal-like design and gas distribution unit of the inner core airbag and the outer ring airbag, the problem of narrow application range and uneven force loading of the workpiece fixing device is solved, and the uniform force and angle adjustment of the workpiece is achieved, which improves the test accuracy and operating efficiency.
Patent Information
- Application Number
- CN202422250213.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-13
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-09-13
AI Technical Summary
The existing workpiece fixing devices have a narrow scope of application and require different types of fixing devices. During the test, the stress is uneven, the angle is single, and the operation is cumbersome, which can easily cause damage to the workpiece.
The inner core airbag and outer ring airbag are designed, both of which are petal-shaped, and are supported and fixed by multiple inflatable and inflatable petal units. Combined with the gas distribution unit, it achieves uniform stress, adjustable angles, and uses flexible silicone material to reduce damage.
It realizes uniform stress on workpieces of different shapes, improves testing accuracy, simplifies operating procedures, and protects workpieces from damage.
Smart Images
Figure CN223289635U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of measuring and fixing devices, and in particular relates to a workpiece fixing device. Background Art
[0002] Currently, in the process of performance testing of workpieces, due to the large differences in the shapes and sizes of workpieces, performance testing, especially testing of mechanical properties, requires different types and sizes of fixed fixtures, and often requires multiple angle measurements. Not only are the types of fixed fixtures cumbersome, but the fixing time is also long, which can easily cause accidental damage to the workpiece being tested.
[0003] Therefore, there is an urgent need for a universal fixing device that has a wide range of applications, can provide multiple fixing angles, and can evenly apply force to the workpiece to be measured. Utility Model Content
[0004] The utility model provides a workpiece fixing device, which is used to solve the problems of large limitations of the fixing devices in the prior art, different workpieces requiring different types of fixing devices, uneven force during testing, single angle, and cumbersome operation.
[0005] The utility model provides a workpiece fixing device, comprising: an inner core airbag and an outer ring airbag; the outer ring airbag has a hollow structure corresponding to the size of the inner core airbag, the outer ring airbag is sleeved on the outer ring of the inner core airbag, and the inner core airbag and the outer ring airbag are in a petal shape that is adapted to each other; the inner core airbag includes more than two inflatable inner core petal units, and the outer ring airbag includes more than two inflatable outer ring petal units.
[0006] Compared with the existing technology, the benefits of the present invention are as follows: the workpiece fixing device provided by the present invention realizes the support and fixing effect of the workpiece to be measured through the inner core airbag comprising multiple inflated inner core petal units, and realizes the fixing and locking effect of the workpiece to be measured through the outer ring airbag comprising multiple inflated outer ring petal units. It can be adapted to molded parts of different shapes, and the petal-shaped airbags provide more force points for the workpiece to be measured, which can make the workpiece evenly stressed and improve the accuracy of the test results. The angle can be adjusted automatically, saving the operation steps of replacing the fixture.
[0007] Furthermore, it also includes: an inner core gas distribution unit, an outer ring gas distribution unit, an inner core air intake pipe, an outer ring air intake pipe and an air intake main pipe; each inner core petal unit is interconnected through the inner core gas distribution unit, and each outer ring petal unit is interconnected through the outer ring gas distribution unit; the air intake main pipe is respectively connected with the inner core air intake pipe and the outer ring air intake pipe, the inner core air intake pipe is connected with the inner core gas distribution unit, and the outer ring air intake pipe is connected with the outer ring gas distribution unit.
[0008] Furthermore, it also includes: a platform, and the inner core airbag is fixedly installed on the platform.
[0009] Furthermore, the axial length of the outer ring airbag is 1.2 to 2 times that of the inner core airbag.
[0010] Furthermore, the outer diameter of the outer ring airbag is 1.2 to 3 times the diameter of the inner core airbag.
[0011] Furthermore, the inner core airbag is made of a flexible silicone material; and / or the outer ring airbag is made of a flexible silicone material. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a schematic diagram of a fixing device in a filled state in one embodiment of the present utility model;
[0013] Figure 2 This is a schematic diagram of the inner core airbag of the fixing device in an embodiment of the present invention in a filled state;
[0014] Figure 3 This is a schematic diagram of the outer ring airbag in the filling state of the fixing device in one embodiment of the present utility model.
[0015] Description of reference numerals:
[0016] 10. Inner core airbag; 20. Outer ring airbag; 30. Air intake manifold; 40. Platform; 11. Inner core petal unit; 12. Inner core gas distribution unit; 21. Outer ring petal unit; 22. Outer ring gas distribution unit; 31. Inner core air intake pipe; 32. Outer ring air intake pipe. DETAILED DESCRIPTION
[0017] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.
[0018] It should be noted that when an element is referred to as being “fixed to” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” or “laid on” another element, it may be directly connected to the other element or indirectly connected to the other element.
[0019] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.
[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" or "several" means two or more, unless otherwise specifically defined.
[0021] See also Figure 1 、 Figure 2 and Figure 3 The utility model provides a workpiece fixing device, including: an inner core airbag 10 and an outer ring airbag 20; the outer ring airbag 20 has a hollow structure corresponding to the size of the inner core airbag 10, and the outer ring airbag 20 is sleeved on the outer ring of the inner core airbag 10, and the inner core airbag 10 and the outer ring airbag 20 are in a petal shape that is adapted to each other; the inner core airbag 10 includes a plurality of inflatable inner core petal units 11, and the outer ring airbag 20 includes a plurality of inflatable outer ring petal units 21.
[0022] When in use, place the inner core airbag 10 on the table, place the workpiece to be tested on the uninflated inner core airbag 10, and then place the outer ring airbag 20 on the outer ring of the workpiece to be tested. Then inflate the inner core airbag 10 and the outer ring airbag 20, and at the same time adjust the workpiece to be tested to the angle to be tested. Adjust the degree of inflation of the airbag according to the shape and size of the workpiece to be tested, so that the part to be tested of the workpiece is exposed and the rest is completely wrapped by the inner core airbag 10 and the outer ring airbag 20, until the workpiece to be tested is fixed by the fixing device to the stability required for the test.
[0023] The workpiece fixing device provided by the present invention realizes the supporting and fixing effect of the workpiece to be measured through the inner core airbag 10 including multiple inflatable inner core petal units 11, and the fixing and locking effect of the workpiece to be measured by the outer ring airbag 20 including multiple inflatable outer ring petal units 21. It can be adapted to molded parts of different shapes. The petal-shaped airbags provide more force points for the workpiece to be measured, which can make the workpiece evenly stressed and improve the accuracy of the test results. The angle can be adjusted automatically, saving the operation steps of replacing the fixture.
[0024] The utility model does not limit the applicable objects of the fixing device, and can be used to fix workpieces of different shapes, especially organic, flexible and irregularly shaped workpieces, including but not limited to large curvature arc-shaped workpieces.
[0025] During use, after the fixture securely fixes the workpiece, the contact between the workpiece and the fixture may be surface contact, line contact, or point contact.
[0026] The workpiece fixing device provided by the present invention also includes: an inner core gas distribution unit 12 and an outer ring gas distribution unit 22, an inner core air intake pipe 31, an outer ring air intake pipe 32, and an air intake main pipe 30; each inner core petal unit 11 is connected to each other through the inner core gas distribution unit 12, and each outer ring petal unit 21 is connected to each other through the outer ring gas distribution unit 22; the air intake main pipe 30 is respectively connected to the inner core air intake pipe 31 and the outer ring air intake pipe 32, the inner core air intake pipe 31 is connected to the inner core gas distribution unit 12, and the outer ring air intake pipe 32 is connected to the outer ring gas distribution unit 22.
[0027] The fixing force of the workpiece fixing device is determined by the pressure of the air intake manifold 30, that is, as the pressure of the air intake manifold 30 increases, the fixing force increases, and as the pressure of the air intake manifold 30 decreases, the fixing force decreases. The fixing force of the workpiece can be determined based on the shape, thickness, and impact force of the molded part to be tested, which can further meet the test requirements while protecting the workpiece from damage.
[0028] The gas distribution unit can make the air pressure in each petal unit equal, so that the workpiece is subjected to more uniform force; the inner core airbag 10 and the outer ring airbag 20 are inflated separately through the air intake manifold 30, which can further make the workpiece subjected to more uniform force and improve the stability of the fixing device.
[0029] Furthermore, it also includes: a platform 40, and the inner core airbag 10 is fixedly installed on the platform 40; the platform 40 can further improve the stability of the fixing device.
[0030] In one embodiment, the outer ring airbag 20 is 1.2 to 2 times longer in the axial direction than the inner core airbag 10. By limiting the axial length of the outer ring airbag 20 to be greater than that of the inner core airbag 10, the fixing effect of the fixing device on the workpiece can be further improved, thereby enhancing the stability of the fixing device.
[0031] In another specific embodiment, the outer diameter of the outer ring airbag 20 is 1.2 to 3 times the diameter of the inner core airbag 10. By limiting the axial length of the outer ring airbag 20 to be greater than that of the inner core airbag 10, the fixing effect of the fixing device on the workpiece can be further improved, and the stability of the fixing device can be improved.
[0032] Optionally, the inner core airbag 10 and the outer ring airbag 20 are made of flexible silicone material. By using flexible silicone material, the force-bearing area of the workpiece can be further increased, the force-bearing pressure can be reduced, and the surface damage of the workpiece, especially the organic flexible workpiece, caused by the fixture can be further reduced.
[0033] Furthermore, the inner core airbag 10 and the outer ring airbag 20 are made of high temperature resistant material.
[0034] In one embodiment, a pressure reducing valve is also included. The pressure of the compressed air in the air intake manifold 30 is adjusted by the pressure reducing valve, which can adjust the locking force of the inner core airbag 10 and the outer ring airbag 20 on the workpiece. The fixing device provided by the utility model can achieve the stability required for the test and ensure that the workpiece will not be deformed and change its mechanical shape, thereby ensuring the accuracy of the test results.
[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. If these modifications and variations fall within the scope of the claims of the present invention and their equivalent technologies, they should be considered to be within the scope of protection of the present invention.
Claims
1. A workpiece fixing device, characterized in that: include: Inner core airbag and outer ring airbag; the outer ring airbag has a hollow structure corresponding to the size of the inner core airbag, the outer ring airbag is arranged on the outer ring of the inner core airbag, and the inner core airbag and the outer ring airbag are in a petal shape that is adapted to each other; the inner core airbag includes more than two inflatable inner core petal units, and the outer ring airbag includes more than two inflatable outer ring petal units.
2. The workpiece fixing device according to claim 1, characterized in that: Also includes: Inner core gas distribution unit, outer ring gas distribution unit, inner core air intake pipe, outer ring air intake pipe and air intake manifold; Each inner core petal unit is connected to each other through the inner core gas distribution unit, and each outer ring petal unit is connected to each other through the outer ring gas distribution unit; the intake manifold is respectively connected to the inner core intake pipe and the outer ring intake pipe, the inner core intake pipe is connected to the inner core gas distribution unit, and the outer ring intake pipe is connected to the outer ring gas distribution unit.
3. The workpiece fixing device according to claim 1, characterized in that: Also includes: The platform is provided with an inner core airbag which is fixedly mounted on the platform.
4. The workpiece fixing device according to claim 1, characterized in that: The axial length of the outer ring airbag is 1.2 to 2 times that of the inner core airbag.
5. The workpiece fixing device according to claim 1, characterized in that: The outer diameter of the outer ring airbag is 1.2 to 3 times the diameter of the inner core airbag.
6. The workpiece fixing device according to any one of claims 1 to 5, characterized in that: The inner core airbag is made of flexible silicone material; and / or, The outer ring airbag is made of flexible silicone material.