Structure for carrying out linear sealing strip aging test

Abstract

The utility model discloses a structure for carrying out linear sealing strip aging test, which comprises a linear sliding mechanism and a sealing strip test board arranged on one side of the linear sliding mechanism, the linear sliding mechanism comprises a sliding seat and a driving device capable of driving the sliding seat to move back and forth along the linear direction, and a counter is arranged on the sliding seat. A rubber strip set is arranged on the sealing strip testing table and comprises two opposite linear sealing strips arranged at intervals, the linear sealing strips are fixedly connected to the sealing strip testing table, the two linear sealing strips abut against each other and are in sealing fit with each other, and a sliding head extending in the direction where the rubber strip set is located is fixedly connected to the sliding base. The sliding head penetrates through the position between the two linear sealing strips and extends into the inner side space of the two linear sealing strips, and the sliding head can be matched with the two linear sealing strips in a sliding and sealing mode. The linear sealing strip aging test device is simple in structure and convenient and reliable to use, and can be used as a basis for evaluating the service life of the linear sealing strip aging test according to the number of cycles of reciprocating movement of the sliding seat.

Description

Technical Field

[0001] The utility model relates to the technical field of seal strip aging test, in particular to a structure for aging test of linear seal strip. Background Art

[0002] In the fields of precision machining and industrial measurement and control (dynamic measurement), precision displacement sensors are an essential and important part, which are compared to the eyes of intelligent manufacturing. Their performance directly determines the accuracy of the machining and manufacturing processes. Currently, the displacement sensors on the market mainly adopt sensing technologies such as strain type, inductive type, grating, capacitive grating, and magnetic grating. Among them, grating sensors are widely used in industries such as machine tool machining and inspection instruments due to their advantages of high precision, convenient installation, and easy digitalization.

[0003] The nano time grating includes an absolute linear time grating and a circular time grating. Among them, the highest accuracy of the linear time grating can reach ±3μm, and it is widely used in equipment and devices that require extremely high position measurement accuracy, including ultra-precision machine tools and equipment, measuring instruments, and measuring and production equipment in the semiconductor industry. In order to create a stable environment for the internal precision measurement components of the linear time grating and ensure the stability of the linear time grating measurement, a closed structure is usually provided for the linear time grating. Because during the machining of machine tools, there will be a phenomenon that cutting fluid and metal chips fly everywhere, which is likely to cause pollution and damage to the linear time grating. Therefore, the linear time grating is installed in the internal sealed space formed by two linear seal strips. The moving part extends into the interior through the two linear seal strips, and the measurement of the moving part is realized inside the seal strip linearly. When the moving part moves, a sliding seal fit relationship is formed between the moving part and the two linear seal strips respectively, so that the external oil and chips can be blocked by the seal strips. However, there is friction between the moving part and the seal strip. After long-term operation, the seal strip will age and be damaged. Moreover, the oil stains attached to the seal strip carry metal chips, which can accelerate the aging of the seal strip. Once the seal strip ages, the oil stains and chips can invade the interior of the seal strip. Therefore, the service life of the seal strip directly affects the service life and stability of the linear time grating. Summary of the Utility Model

[0004] Aiming at the above deficiencies of the prior art, the technical problem to be solved by the utility model is: how to provide a structure for aging test of linear seal strip with simple structure, convenient and reliable use, and capable of evaluating the service life of the seal strip according to the number of test cycles.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A structure for aging test of linear sealing strips, comprising a linear sliding mechanism and a sealing strip test bench on one side thereof. The linear sliding mechanism includes a sliding seat and a driving device capable of driving the sliding seat to move back and forth in a linear direction. A counter is installed on the sliding seat, and the counter can measure the number of cycles of the sliding seat moving back and forth. A strip group is arranged on the sealing strip test bench. The strip group includes two linear sealing strips that are opposite and spaced apart. The linear sealing strips extend along the moving direction of the sliding seat. One side edge of the linear sealing strip along its length direction is a fixed end and is fixedly connected to the sealing strip test bench. The two linear sealing strips are in contact and sealing fit with each other to seal the inner space between the two linear sealing strips. A sliding head fixedly connected to the sliding seat extends in the direction of the strip group. The sliding head passes through the position between the two linear sealing strips and extends into the inner space of the two linear sealing strips. The sliding head can be in sliding sealing fit with the two linear sealing strips respectively.

[0007] In the present utility model, the driving device drives the sliding seat to move back and forth to simulate the movement scenario of the moving parts on the machine tool. The sliding heads on the sliding seat respectively perform sliding friction with the two linear sealing strips, driving the cyclic back-and-forth movement of the sliding seat, and the counter records the number of cycles of the sliding seat. When the linear sealing strip reaches the wear limit standard, the total number of cycles of the sliding seat can be used as the basis for evaluating the service life of the linear sealing strip in the aging test.

[0008] As an optimization, a groove extending along the moving direction of the sliding seat is recessed on the sealing strip test bench. The number of strip groups is multiple. The two linear sealing strips in each strip group are respectively fixedly connected to the two side walls of the groove. All the linear sealing strips fixedly connected to the same side wall of the groove are spaced apart along the depth direction of the groove. Multiple groups of sealing strips can be tested simultaneously, improving the efficiency.

[0009] As an optimization, the groove is a through groove. A fixing groove corresponding to the position of the linear sealing strip is arranged on the groove wall of the groove. The fixing groove extends along a direction parallel to the extension direction of the groove. The fixing groove is a T-shaped groove. One end of the fixing groove communicates with the outside. A fixing convex strip is formed by protruding the fixed end of the linear sealing strip. The fixing convex strip extends from one end of the linear sealing strip to the other end. The linear sealing strip is clamped in the transverse groove of the T-shaped groove through the fixing convex strip. The linear sealing strip extends out of the T-shaped groove through the vertical groove of the T-shaped groove. Limiting blocks for limiting the fixing convex strip are respectively arranged at positions on both ends of the fixing convex strip in the fixing groove. When installing the linear sealing strip, the fixing convex strip can be inserted into the transverse groove of the fixing groove from the opening at the end of the fixing groove, and the whole linear sealing strip is fixed through the limitation of the transverse groove. At the same time, the disassembly is also convenient, and the linear sealing strip can be directly pulled out.

[0010] As an optimization, an observation cavity extending along the extending direction of the groove is recessed in the bottom of the groove, and both ends of the observation cavity along its length direction are communicated with the outside. During the cyclic process of the sliding seat sliding back and forth, various harsh working conditions during the machine tool processing can also be simulated outside the sealing strip test bench, such as the splashing of cutting fluid, and the intrusion of metal chips and grinding wheel abrasives. By observing the inside through both ends of the observation cavity, the sealing condition inside the two linear sealing strips can be observed, which is convenient for understanding the aging condition of the linear sealing body.

[0011] As an optimization, the linear sliding mechanism further includes a slide rail extending along a linear direction, the sliding seat is slidably connected to the slide rail and can move along the extending direction of the slide rail, the driving device includes a driving bench and a driving motor fixedly connected to the driving bench, a crank is fixedly connected to the motor shaft of the driving motor, a connecting rod is arranged between the crank and the sliding seat, and both ends of the connecting rod are respectively rotatably connected to the crank and the sliding seat to form a crank-slider mechanism. When the motor shaft of the driving motor rotates, the sliding seat can be driven to move on the slide rail through the connecting rod. The driving motor can be a servo motor, and by controlling the rotation speed, the low-speed and high-speed operation of the sliding seat can be realized, and then the motion simulation under different speeds can be carried out. The crank-slider mechanism has a simple structure and is not prone to failure, and can realize the cyclic back-and-forth movement control of the sliding seat.

[0012] As an optimization, both the linear sliding mechanism and the sealing strip test bench are arranged on the top surface of the operation table. A horizontally extending installation groove is recessed in the top surface of the operation table. The slide rail is fixedly connected to the bottom of the installation groove and extends along a direction parallel to the extending direction of the installation groove. The sealing strip test bench is fixedly connected to one side of the installation groove. The driving bench includes a top plate arranged above the slide rail. Support brackets for supporting the top plate are respectively arranged on both sides of the slide rail in its extending direction, and the support brackets are fixedly connected to the top surface of the operation table. The driving motor is fixedly connected to the top surface of the top plate, and the motor shaft of the driving motor passes through the top plate in the vertical direction and extends below the top plate. The operation table can facilitate the operation of relevant personnel, and the sunken installation groove can reduce the installation height of the driving motor, which is convenient for the later maintenance of the equipment.

[0013] Compared with the prior art, the utility model has the following beneficial effects: The utility model has a simple structure, is convenient, reliable in use. By the cyclic back-and-forth friction of the sliding head on the linear sealing strip, the wear condition of the linear sealing strip is observed, and according to the cyclic number of times of the back-and-forth movement of the sliding seat, it is used as the basis for evaluating the service life of the linear sealing strip in the aging test. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the utility model;

[0015] Figure 2This is a schematic diagram of the cooperation structure between the linear sealing strip and the sliding head in the present utility model. Detailed implementation manners

[0016] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Components of the embodiments of the present utility model generally described and illustrated in the accompanying drawings herein may be arranged and designed in a variety of different configurations. Therefore, the detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model to be protected, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0017] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present utility model is normally placed. This is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be construed as indicating or implying relative importance. In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0018] Such as Figure 1 and Figure 2As shown, the structure for aging test of linear sealing strips in this specific embodiment includes a linear sliding mechanism and a sealing strip test bench 1 located on one side thereof. The linear sliding mechanism includes a sliding seat 2 and a driving device capable of driving the sliding seat 2 to move back and forth in a linear direction. A counter is installed on the sliding seat 2, and the counter can measure the number of cycles of the sliding seat 2 moving back and forth. A strip group is arranged on the sealing strip test bench 1. The strip group includes two linear sealing strips 3 that are opposite and spaced apart. The linear sealing strips 3 extend along the moving direction of the sliding seat 2. One side edge of the linear sealing strip 2 along its length direction is a fixed end and is fixedly connected to the sealing strip test bench 1. The two linear sealing strips 2 are in contact with each other and are sealingly fitted to seal the inner space between the two linear sealing strips 3. A sliding head 4 extending in the direction of the strip group is fixedly connected to the sliding seat 2. The sliding head 4 passes through the position between the two linear sealing strips 3 and extends into the inner space of the two linear sealing strips 3. The sliding head 4 can be slidingly and sealingly fitted with the two linear sealing strips 3 respectively.

[0019] In this specific embodiment, a groove extending along the moving direction of the sliding seat 2 is recessed on the sealing strip test bench 1. The number of strip groups is multiple. The two linear sealing strips 3 in each strip group are respectively fixedly connected to the two side walls of the groove. All the linear sealing strips 3 fixedly connected to the same side wall of the groove are spaced apart along the depth direction of the groove.

[0020] In this specific embodiment, the groove is a through groove. A fixing groove corresponding to the position of the linear sealing strip 3 is arranged on the groove wall of the groove. The fixing groove extends along the direction parallel to the extension direction of the groove. The fixing groove is a T-shaped groove. One end of the fixing groove communicates with the outside. A fixing rib 5 is formed by protruding at the fixed end of the linear sealing strip 3. The fixing rib 5 extends from one end of the linear sealing strip 3 to the other end. The linear sealing strip 3 is clamped in the transverse groove of the T-shaped groove through the fixing rib 5. The linear sealing strip 3 extends out of the T-shaped groove through the vertical groove of the T-shaped groove. Limiting blocks for limiting the fixing rib 5 are respectively arranged at the positions at both ends of the fixing rib 5 in the fixing groove.

[0021] In this specific embodiment, an observation cavity extending along the extension direction of the groove is recessed at the bottom of the groove. Both ends of the observation cavity along its length direction communicate with the outside.

[0022] In this specific embodiment, the linear sliding mechanism further includes a slide rail 6 extending in a linear direction. The slide block 2 is slidably connected to the slide rail 6 and can move along the extending direction of the slide rail 6. The driving device includes a driving bench 7 and a driving motor 8 fixedly connected to the driving bench 7. A crank 9 is fixedly connected to the motor shaft of the driving motor 8. A connecting rod 10 is arranged between the crank 9 and the slide block 2. The two ends of the connecting rod 10 are respectively rotatably connected to the crank 9 and the slide block 2 to form a crank and connecting rod mechanism. When the motor shaft of the driving motor 8 rotates, the slide block 2 can be driven to move on the slide rail 6 through the connecting rod 10.

[0023] In this specific embodiment, both the linear sliding mechanism and the sealing strip test bench 1 are arranged on the top surface of the operation table 11. A horizontally extending installation groove is recessed on the top surface of the operation table 11. The slide rail 6 is fixedly connected to the bottom of the installation groove and extends along a direction parallel to the extending direction of the installation groove. The sealing strip test bench 1 is fixedly connected to one side of the installation groove. The driving bench 7 includes a top plate arranged above the slide rail 6. Support brackets for supporting the top plate are respectively arranged on both sides of the slide rail 6 in its extending direction. The support brackets are fixedly connected to the top surface of the operation table 11. The driving motor 8 is fixedly connected to the top surface of the top plate. The motor shaft of the driving motor 8 passes through the top plate in the vertical direction and extends below the top plate.

[0024] 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 them. Those of ordinary skill in the art should understand that any modifications or equivalent replacements made to the technical solutions of the present invention without departing from the purpose and scope of the present technical solution shall be covered by the scope of the claims of the present invention.

Claims

1. A structure for performing aging test on a linear sealing strip, characterized in that: It includes a linear sliding mechanism and a sealing strip test bench located on one side thereof, the linear sliding mechanism includes a slide seat and a driving device capable of driving the slide seat to move back and forth in a linear direction, a counter is installed on the slide seat, and the counter can measure the number of cycles of the slide seat moving back and forth, a rubber strip group is arranged on the sealing strip test bench, the rubber strip group includes two linear sealing strips that are opposite and spaced apart, the linear sealing strips are extended along the moving direction of the slide seat, one side edge of the linear sealing strip along its length direction is a fixed end and is fixedly connected to the sealing strip test bench, the two linear sealing strips abut against each other and seal together, and are used to seal the inner space of the two linear sealing strips, a sliding head extending in the direction of the rubber strip group is fixedly connected to the slide seat, the sliding head passes through a position between the two linear sealing strips and extends into the inner space of the two linear sealing strips, and the sliding head can slide and seal together with the two linear sealing strips respectively.

2. The structure for performing aging test on a linear sealing strip according to claim 1, characterized in that: The sealing strip test bench is provided with a groove extending along the moving direction of the slide seat. There are multiple groups of rubber strip groups. The two linear sealing strips in each group of rubber strip groups are respectively fixedly connected to the groove walls on both sides of the groove. All the linear sealing strips fixedly connected to the groove wall on the same side of the groove are spaced apart along the depth direction of the groove.

3. The structure for performing aging test on a linear sealing strip according to claim 2, characterized in that: The groove is a through groove, and a fixing groove is arranged on the groove wall of the groove corresponding to the position of the linear sealing strip. The fixing groove is extended in parallel with the extension direction of the groove. The fixing groove is a T-shaped groove, and one end of the fixing groove is connected to the outside world. The fixed end protrusion of the linear sealing strip is formed with a fixing convex strip, and the fixing convex strip extends from one end of the linear sealing strip to the other end. The linear sealing strip is clamped in the horizontal groove of the T-shaped groove through the fixing convex strip, and the linear sealing strip extends out of the T-shaped groove through the vertical groove of the T-shaped groove. Limit blocks for limiting the fixing convex strip are respectively arranged in the fixing groove and at the positions at both ends of the fixing convex strip.

4. The structure for performing aging test on a linear sealing strip according to claim 2, characterized in that: An observation cavity extending along the extending direction of the groove is concavely arranged at the bottom of the groove, and both ends of the observation cavity along the length direction thereof are respectively communicated with the outside.

5. The structure for performing aging test on a linear sealing strip according to claim 1, characterized in that: The linear sliding mechanism also includes a slide rail extending in a linear direction, the slide seat is slidably connected to the slide rail and can move along the extension direction of the slide rail, the driving device includes a driving platform and a driving motor fixedly connected to the driving platform, a crank is fixedly connected to the motor shaft of the driving motor, a connecting rod is arranged between the crank and the slide seat, two ends of the connecting rod are respectively rotatably connected to the crank and the slide seat to form a crank-connecting rod mechanism, when the motor shaft of the driving motor rotates, the slide seat can be driven to move on the slide rail through the connecting rod.

6. The structure for performing aging test on a linear sealing strip according to claim 5, characterized in that: The linear sliding mechanism and the sealing strip test bench are both arranged on the top surface of the operating table. A horizontally extending mounting groove is recessed on the top surface of the operating table. The slide rail is fixedly connected to the bottom of the mounting groove and extends in a direction parallel to the extension direction of the mounting groove. The sealing strip test bench is fixedly connected to one side of the mounting groove. The driving stand includes a top plate arranged above the slide rail. The slide rail is located on both sides of its extension direction and is respectively provided with brackets for supporting the top plate. The brackets are fixedly connected to the top surface of the operating table. The driving motor is fixedly connected to the top surface of the top plate. The motor shaft of the driving motor passes through the top plate in a vertical direction and extends into the bottom of the top plate.

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