Pressing test machine for filter with shielding case

Abstract

The utility model belongs to the technical field of filter debugging, and particularly relates to a press-down tester for a filter with a shielding case, which comprises a debugging bracket; the debugging assemblies are arranged on the two opposite sides of the edge part of the debugging table; and the downward pressing assembly comprises a floating pressing head and a first driving mechanism for driving the floating pressing head to perform downward pressing action, and the floating pressing head and the first driving mechanism are connected through a connecting rod. The pressing cylinder drives the floating pressure head at the end part to press the dielectric filter, and the floating mechanism arranged in the floating pressure head can perform buffering, so that the dielectric filter cannot be damaged due to rigid impact during pressing; meanwhile, a floating ball and a floating groove are arranged, so that the pressure head body is always in press fit with the surface of the to-be-tested filter, and damage caused by uneven stress of the dielectric filter due to imbalance of a machine is prevented; the guide assembly assists the floating pressing head in pressing down, and it is guaranteed that the direction is stable and uniform in the pressing down process; a shielding case is arranged to simulate the actual use scene of the filter.

Description

TECHNICAL FIELD

[0001] The utility model belongs to filter test technical field, and specifically relates to a filter under -pressure testing machine with shielded case. BACKGROUND

[0002] In modern communication technology, dielectric filters, as a kind of key frequency selection element, are widely used in various wireless communication devices, such as mobile phones, base stations and satellite communication systems, etc. Through its unique dielectric material and structural design, dielectric filters can realize accurate screening and transmission of specific frequency signals, which is crucial to improve the performance and stability of communication systems. However, the manufacturing and testing process of dielectric filters faces many challenges, especially the requirements for ensuring its mechanical integrity and electrical performance are extremely strict.

[0003] Traditional under-pressure testing mechanism with shielded case often uses rigid ram to directly apply pressure to the filter, which has obvious defects. On the one hand, rigid impact can easily cause damage to the internal structure or external packaging of the filter, especially in the case of small size and precise structure, a small amount of damage may also have irreversible impact on its performance. On the other hand, due to the existence of small imbalance or gap in the mechanical parts of the testing equipment, the traditional testing mechanism often has difficulty in ensuring uniform distribution of force during the under-pressure process, which not only affects the accuracy of test results, but also may increase the risk of damage to the filter; in addition, the actual application scenario of dielectric filter is to have a shielded case for protection, and the existing testing method cannot simulate the actual use scenario of dielectric filter for testing, therefore, the product after debugging may still have problems when applied to the terminal product. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a filter under -pressure testing machine with shielded case.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a filter under -pressure testing machine with shielded case, which comprises:

[0006] The debugging support is fixed with a debugging table;

[0007] The debugging assembly is arranged on the opposite sides of the edge part of the debugging table, and comprises a radio frequency terminal and a fixing seat for fixing the radio frequency terminal;

[0008] The under -pressure assembly comprises a floating ram, and a first driving mechanism for driving the floating ram to perform under -pressure action;

[0009] The shielding assembly comprises a shielded case, and a second driving mechanism for driving the shielded case to displace to the shielding position of the filter;

[0010] A guide assembly is arranged on the side of the pressing assembly and parallel to the axis of the pressing assembly.

[0011] In some embodiments, the floating pressing head comprises a pressing head body and a floating mechanism.

[0012] In the present embodiment, the floating mechanism comprises a floating ball, a floating groove accommodating the floating ball, and an elastic intermediate part connecting the floating ball and the floating groove. When the floating mechanism is in a floating state, there is a gap between the floating ball and the floating groove. When the floating mechanism is in a pressing state, the floating ball is just accommodated in the floating groove and abuts against the inner wall of the floating groove.

[0013] In some embodiments, the elastic intermediate part is a floating spring, and the end of the connecting rod is further provided with an accommodating groove accommodating the floating spring.

[0014] In some embodiments, the elastic intermediate part is a flexible support rod.

[0015] In some embodiments, the elastic intermediate part is a flexible bushing, and the floating ball is wrapped in the flexible bushing. The pressing head body and the connecting rod are respectively connected with the two ends of the flexible bushing.

[0016] In some embodiments, the first driving mechanism is fixedly connected with the adjusting support through a fixed plate, and the connecting rod is fixedly connected with a follower plate. The fixed plate and the follower plate are movably connected through at least one set of guide assemblies.

[0017] In some embodiments, the follower plate is provided with a first gap hole for the floating pressing head to pass through.

[0018] In some embodiments, the guide assembly comprises a guide rod.

[0019] In some embodiments, the second driving device is further provided with a support plate, and the shielding cover is fixed below the support plate. The second driving device is arranged on the follower plate, and the support plate is provided with a second gap hole for the floating pressing head to pass through.

[0020] The filter pressing test machine with a shielding cover provided in the present application can drive the floating pressing head at the end of the pressing cylinder to press the medium filter during testing. The floating mechanism arranged in the floating pressing head can buffer and will not cause damage to the medium filter due to rigid impact during pressing. At the same time, the arrangement of the floating ball and the floating groove makes the pressing head body always press the surface of the filter to be tested, preventing the damage of the medium filter caused by the uneven force due to the imbalance of the machine. The guide assembly assists the floating pressing head to perform the pressing action, ensuring the stability and unity of the direction during the pressing process. The shielding cover is arranged to simulate the actual use scene of the filter. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic view of an embodiment of the utility model;

[0022] Figure 2 is a structural schematic view of the utility model Figure 1 is an enlarged schematic view of structure at A in the utility model;

[0023] Figure 3 is a structural schematic view of the floating pressure head of the utility model;

[0024] Figure 4 is a structural schematic view of the floating pressure head in extrusion state of the utility model;

[0025] Figure 5 is a structural schematic view of another embodiment of the floating pressure head of the utility model;

[0026] Figure 6 is a structural schematic view of still another embodiment of the floating pressure head of the utility model;

[0027] In the drawings:

[0028] Test support 10, test table 101;

[0029] Test assembly 20, radio frequency terminal 201, fixed seat 202;

[0030] Downward pressing assembly 30, floating pressure head 301, first driving mechanism 302, connecting rod 303, pressure head body 304, floating mechanism 305, floating ball 306, floating groove 307, floating spring 309, accommodating groove 310, flexible supporting rod 311, flexible bushing 312;

[0031] Shielding assembly 40, shielding cover 401, second driving mechanism 402;

[0032] Guiding assembly 50, guiding rod 501;

[0033] Fixed plate 60;

[0034] Follow-up plate 70, first clearance hole 701;

[0035] Supporting plate 80, second clearance hole 801. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0037] Embodiment 1

[0038] Figure 1 The utility model provides a kind of filter's pressure maintaining test mechanism with shield cover.

[0039] As Figure 1 shown, the utility model provides a kind of filter's pressure maintaining test mechanism with shield cover 401, it includes:

[0040] Test support 10 is fixed with test table 101 on it;

[0041] Test component 20 is arranged in the opposite sides of the edge portion of test table 101, including radio frequency terminal 201 and the fixed seat for fixed radio frequency terminal 201;

[0042] Down pressure component 30 includes floating pressure head 302, and the first drive mechanism 303 of driving floating pressure head 302 to carry out down pressure action, floating pressure head 302, first drive mechanism 303 are connected by connecting rod 304;

[0043] Shielding component 40 includes shield cover 401, and the second drive mechanism 402 of driving shield cover 401 displacement to filter shielding position;

[0044] Guiding component 50 is arranged in the circumferential side of down pressure component 30, and parallel with the axis of down pressure component 30.

[0045] The working process of the pressure maintaining test mechanism of the filter with shield cover 401 provided in the embodiment is as follows:

[0046] Filter is placed on test table 101, first drive mechanism 303 pushes floating pressure head 302 to move down, and filter is pressed tightly on test component 20, and fixing is completed;Second drive mechanism 402 drives shield cover 401 displacement to filter shielding position, simulates actual application scene, then is tested by test component 20, and the test component 20 in the embodiment can use conventional filter test equipment in prior art, and can meet the use requirement.

[0047] The utility model discloses a first drive mechanism 303 drive end's floating pressure head 302 carries out the filter compression, and the floating mechanism 306 that sets up in floating pressure head 302 can buffer, when compressing, will not cause the damage of filter because rigid impact, through the guiding component 50 auxiliary floating pressure head 302 carries out the action of pressing down, guarantees the smooth and unified of direction in the process of pressing down, sets up the shield 401 analog filter actual use scene.

[0048] In the embodiment, the first drive mechanism 303 and the second drive mechanism 402 are air cylinders or electromagnetic valves, and can also be other drive mechanisms capable of precisely controlling stroke and pressure.

[0049] Figure 2 The utility model discloses a structure amplification schematic diagram of A place in Figure 1 The utility model discloses a structure amplification schematic diagram of A place in

[0050] As shown in Figure 2 , the floating pressure head 302 includes a pressure head body 305 and a floating mechanism 306.

[0051] In the embodiment, the floating mechanism 306 includes a floating ball 307, a floating groove 308 accommodating the floating ball 307, and an elastic intermediate piece connecting the floating ball 307 and the floating groove 308. When the floating mechanism 306 is in a floating state, there is a gap between the floating ball 307 and the floating groove 308. When the floating mechanism 306 is in a squeezed state, the floating ball 307 is just accommodated in the floating groove 308 and abuts against the inner wall of the floating groove 308.

[0052] Figure 3 The utility model discloses a structure schematic diagram of floating pressure head, Figure 4 The utility model discloses a structure schematic diagram of floating pressure head in a squeezed state.

[0053] As shown in Figure 4 , before testing, the floating mechanism 306 is in a floating state, and there is a gap or a moving space between the floating ball 307 and the floating groove 308. Figure 5 As shown in

[0054] The embodiment sets the floating pressure head 302 so that the lower pressing surface of the pressure head body 305 can be in full contact with the filter, and when the test table 101 or the lower pressing assembly 30 is tilted, the elastic intermediate part in the floating pressure head 302 is bent and deformed, the floating ball 307 is rotated, the pressure head body 305 is changed in angle along the connecting rod 304 in the radial direction and is in full contact with the filter, thereby preventing the problem that the filter is damaged due to uneven force caused by the imbalance of the machine.

[0055] In some embodiments, the elastic intermediate part is a floating spring 310, and the end of the connecting rod 304 is also provided with a containing groove for containing the floating spring 310. When the lower pressing assembly 30 is pressed, the spring is extruded and deformed, the floating ball 307 is rotated, and the pressure head body 305 is changed in angle and is in full contact with the filter. The floating spring 310 is selected from soft springs made of low elastic modulus materials such as stainless steel and polyurethane, and has low rigidity and is easy to deform, thereby preventing the filter from being damaged during the pressing process.

[0056] Figure 5 Fig. 3 is a structural schematic view of another embodiment of the floating pressure head of the utility model; Figure 6 Fig. 4 is a structural schematic view of still another embodiment of the floating pressure head of the utility model.

[0057] As shown in Fig. 1, Figure 5 the elastic intermediate part 309 is a flexible supporting rod 312. When the lower pressing assembly 30 is pressed, the flexible supporting rod 312 is deformed and tilted, the floating ball 307 is rotated, and the pressure head body 305 is in full contact with the filter. The flexible supporting rod 312 can be made of rubber material with strong deformation recovery ability.

[0058] As shown in Fig. 2, Figure 6 the elastic intermediate part 309 is a flexible bushing 313, the floating ball 307 is wrapped in the flexible bushing 313, and the pressure head body 305 and the connecting rod 304 are connected with two ends of the flexible bushing 313 respectively. When the lower pressing assembly 30 is pressed, the flexible bushing 313 is extruded and deformed, the pressure head body 305 is in full contact with the filter, and the floating ball 307 is in abutment with the floating groove 308 to conduct the pressing force. The flexible bushing 313 can be made of rubber material with strong deformation recovery ability.

[0059] Embodiment 2

[0060] As shown in Fig. 3, Figure 1As shown, the system also includes a fixed plate 60 and a follower plate 70. The first drive mechanism 303 is fixedly connected to the test bracket 10 via the fixed plate 60, and the follower plate 70 is fixedly connected to the connecting rod 304. The fixed plate 60 and the follower plate 70 are movably connected via at least one set of guide components 50. The guide component 50 includes guide rods 501. In this embodiment, the follower plate 70 and the fixed plate 60 are connected via the guide component 50. The guide component 50 includes at least one set of guide rods 501 movably disposed between the follower plate 70 and the fixed plate 60. The guide rods 501 are axially parallel to the output end of the first drive mechanism 303 and the connecting rod 304, so that the direction of the floating pressure head 302 remains uniform during the pressing process, avoiding skewing and causing uneven force on the product.

[0061] In this embodiment, the follower plate 70 has a first clearance hole 701 for the floating pressure head 302 to pass through. When pressing down, the first drive mechanism 303 drives the floating pressure head 302 to pass through the first clearance hole 701 to perform the pressing action.

[0062] Example 3

[0063] like Figure 1 As shown, in some embodiments, a support plate 80 is also included, which is connected to the output end of the second drive mechanism 402. The shield 401 is fixed below the support plate 80. The second drive mechanism 402 is disposed on the follower plate 70. The support plate 80 has a second clearance hole 801 for the floating pressure head 302 and the shield 401 to pass through. Specifically, the pressing component 30 is fixed to the test bracket 10 by the fixing plate 60. When the pressing component 30 presses down, it drives the follower plate 70, which is fixedly connected to the connecting rod 304, to move down. The follower plate 70 is provided with a second driving mechanism 402, which pushes the support plate 80 to move the shield 401 up and down. The support plate 80 and the shield 401 are provided with a second clearance hole 801 for the floating pressure head 302 to pass through. During the pressing process of the floating pressure head 302, the shield 401 can move synchronously with the floating pressure head 302. Only one pressing position positioning is required. The second driving mechanism 402 makes fine adjustments to the position of the shield 401, which simplifies the operation steps and improves the testing efficiency.

[0064] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A filter press-down tester with a shield, characterized by, The utility model relates to a debugging device for radio frequency filter, comprising: A debugging support is fixed with a debugging table; Debugging components are arranged on opposite sides of the edge of the debugging table, including radio frequency terminals and fixing seats for fixing the radio frequency terminals; A pressing component includes a floating pressing head, and a first driving mechanism for driving the floating pressing head to perform a pressing action, the floating pressing head and the first driving mechanism are connected through a connecting rod; A shielding component includes a shielding cover and a second driving mechanism for driving the shielding cover to displace to a filter shielding position; A guide component is arranged on the side of the pressing component and is parallel to the axis of the pressing component.

2. The filter press machine of claim 1, wherein: The floating pressing head includes a pressing head body and a floating mechanism.

3. The filter press machine of claim 2, wherein: The floating mechanism includes a floating ball, a floating groove accommodating the floating ball, and an elastic intermediate part connecting the floating ball and the floating groove, when the floating mechanism is in a floating state, there is a gap between the floating ball and the floating groove, when the floating mechanism is in a pressing state, the floating ball is just accommodated in the floating groove and abuts against the inner wall of the floating groove.

4. The filter press machine of claim 3, wherein: The elastic intermediate part is a floating spring, and the end of the connecting rod is also provided with an accommodating groove accommodating the floating spring.

5. The filter press machine of claim 3, wherein: The elastic intermediate part is a flexible support rod.

6. The filter press machine of claim 3, wherein: The elastic intermediate part is a flexible bushing, and the floating ball is wrapped in the flexible bushing, and the pressing head body and the connecting rod are respectively connected with both ends of the flexible bushing.

7. A filter press-down test machine with a shield according to any one of claims 1 to 6, characterized in that: It also includes a fixed plate and a follow-up plate, the first driving mechanism is fixedly connected with the debugging support through the fixed plate, the follow-up plate is fixedly connected with the connecting rod, and the fixed plate and the follow-up plate are movably connected through at least one set of guide components.

8. The filter press machine of claim 7, wherein: The follow-up plate is provided with a first accommodation hole for the floating pressing head to pass through.

9. The filter press machine of claim 8, wherein: The guide component includes a guide rod.

10. The filter press machine of claim 9, wherein: It also includes a support plate connected with the output end of the second driving device, the shielding cover is fixed below the support plate, the second driving device is arranged on the follow-up plate, and the support plate is provided with a second accommodation hole for the floating pressing head to pass through.

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