Vacuum exhaust equipment for low light level image intensifier production

Abstract

The invention relates to the technical field of low-light image intensifiers and discloses vacuum exhaust equipment for low-light image intensifier production, which solves the problem that the process of fixing and aligning a cathode ray tube is generally achieved manually, the operation is relatively cumbersome, and the labor intensity of the staff is relatively high. The invention comprises a mounting frame, a driving component is installed inside the mounting frame, a vacuum exhaust component is installed at one end of the driving component, a positioning component is installed at the other end of the driving component, a cathode ray tube is placed inside the positioning component, and the positioning component is connected to the mounting frame; the invention, through the coordinated use of the positioning component, the vacuum exhaust component and the driving component, can simultaneously drive the positioning component and the vacuum exhaust component to move through the driving component, fix the cathode ray tube through the positioning component, and then make the vacuum exhaust component close to the cathode ray tube, so that the process of fixing and aligning the cathode ray tube can be automatically completed, reducing the labor intensity of the staff.

Description

Technical Field

[0001] The invention belongs to the technical field of low-light-level image intensifiers, and in particular relates to vacuum exhaust equipment for producing low-light-level image intensifiers. Background Art

[0002] The low-light image intensifier, also known as the low-light image tube, is the core component of the low-light night vision device and plays a decisive role in the imaging quality of the entire system. The low-light image intensifier is the core component of the low-light night vision system. The entire low-light night vision system includes an optical imaging lens group, a low-light image intensifier, and a post-processing system. Among them, the low-light image intensifier is the most important link. So far, there have been first-generation low-light image intensifiers, second-generation low-light image intensifiers, third-generation low-light image intensifiers, and fourth-generation low-light image intensifiers. Different generations of low-light image tubes have different structures, and the cathode ray tube is an important part of its composition.

[0003] The process of fixing and aligning the cathode ray tube is generally achieved manually, which is complicated and labor-intensive for the staff. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a vacuum exhaust device for the production of low-light image intensifiers, which effectively solves the problem that the fixing and alignment of the cathode ray tube is generally achieved manually, the operation is relatively cumbersome, and the labor intensity of the staff is relatively high.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: vacuum exhaust equipment for the production of low-light image intensifiers, including a mounting frame, a driving component is installed inside the mounting frame, a vacuum exhaust component is installed at one end of the driving component, a positioning component is installed at the other end of the driving component, a cathode ray tube is placed inside the positioning component, and the positioning component is connected to the mounting frame.

[0006] Preferably, the driving assembly includes an active worm gear rotatably connected to the mounting frame, a guide rod connected to the mounting frame is provided above the active worm gear, a rotating rod is installed at one end of the active worm gear, and the other end of the active worm gear is meshedly connected with an active worm wheel, the active worm wheel is installed on the driven worm gear, and the driven worm gear is rotatably installed on the mounting frame.

[0007] Preferably, the vacuum assembly includes a movable plate threadedly connected to the active worm, a positioning rod is symmetrically slidably inserted on the movable plate, a positioning spring is sleeved on the positioning rod, the positioning rod is symmetrically installed on the mounting plate, a joint is installed on the mounting plate, and the joint is connected to an external vacuum pump.

[0008] Preferably, a screw hole and a guide hole are respectively provided at the bottom of the movable plate, the screw hole is threadedly connected to the active worm, and the guide hole is sleeved with the guide rod.

[0009] Preferably, the positioning assembly includes a cylinder connected to the mounting frame, with positioning blocks hinged equidistantly at both ends of the cylinder, the positioning blocks are connected by telescopic springs, and the outer walls of the positioning blocks form outer inclined surfaces, and ring bodies are slidably sleeved at both ends of the cylinder, and a driving ring is rotatably installed in the middle of the cylinder, a driven worm gear is installed on the driving ring, and the driven worm gear is meshingly connected with the driven worm.

[0010] Preferably, the two sides of the driving ring are arranged obliquely, and the inner wall of the driving ring is equidistantly provided with check valves, the outer wall of the cylinder is equidistantly provided with triangular grooves, and one end of the check valve is placed inside the triangular groove.

[0011] Preferably, the check device comprises a telescopic rod connected to the driving ring and symmetrically arranged, a check block is mounted on one end of the telescopic rod, and an inner inclined surface is formed on one side of the check block.

[0012] Preferably, an adjuster is rotatably mounted on the ring body, the adjuster comprises a cylinder rotatably connected to the ring body, a screw is mounted on the internal thread of the cylinder, a nut is threadedly mounted on the screw, a push rod is mounted on one end of the screw, a slider is mounted on the push rod, the slider is slidably connected to a slide groove provided on the outer wall of the cylinder, and a reset spring is also mounted between the slider and the slide groove.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1) During operation, by using the positioning assembly, vacuum assembly and driving assembly together, the driving assembly can simultaneously drive the positioning assembly and vacuum assembly to move, fix the picture tube through the positioning assembly, and then bring the vacuum assembly close to the picture tube, so that the fixing and alignment process of the picture tube can be automatically completed, reducing the labor intensity of the staff;

[0015] 2) During operation, the driving ring and the ring body are used in coordination. After the driving ring rotates, the ring body is squeezed by the plane part of the driving ring. Therefore, the squeezing pressure is within a reasonable range. When the driving ring continues to rotate, the squeezing pressure of the driving ring on the ring body decreases. Therefore, the damage of the cathode ray tube due to excessive pressure can be avoided.

[0016] 3) During operation, when it is necessary to adjust the clamping force on the surface of the cathode ray tube through the set regulator, it is only necessary to rotate the barrel, and the barrel drives the screw to move through the thread, and the screw drives the push rod to move, and at the same time the slider on the push rod slides in the corresponding slide groove, so as to adjust the length of the regulator. With the use of the drive ring, the clamping force on the outer wall of the cathode ray tube can be adjusted, which can meet the pressure requirements when fixing different cathode ray tubes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 It is a schematic diagram of the structure of the driving assembly of the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of the vacuum pumping component of the present invention;

[0021] Figure 4 It is a schematic diagram of the structure of the positioning component of the present invention;

[0022] Figure 5 It is a schematic diagram of the installation structure of the drive ring of the present invention;

[0023] Figure 6 It is a schematic diagram of the installation structure of the backstop of the present invention;

[0024] Figure 7 It is a schematic diagram of the ring body installation structure of the present invention;

[0025] Figure 8 It is a schematic diagram of the cylinder installation structure of the present invention.

[0026] In the figure: 1, mounting bracket; 2, driving assembly; 201, active worm; 202, guide rod; 203, rotating rod; 204, active worm wheel; 205, driven worm; 3, vacuum assembly; 301, moving plate; 302, positioning rod; 303, positioning spring; 304, mounting plate; 305, joint; 4, positioning assembly; 401, cylinder; 4011, triangular groove; 402, positioning block; 403, telescopic spring; 404, outer bevel; 405, ring body; 4051, cylinder; 4052, screw; 4053, nut; 4054, push rod; 4055, slider; 406, driving ring; 407, driven worm wheel; 408, check valve; 4081, telescopic rod; 4082, check valve; 4083, inner bevel; 5, picture tube. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] Embodiment 1, by Figure 1-8The present invention comprises a mounting frame 1, a driving assembly 2 is installed inside the mounting frame 1, a vacuum assembly 3 is installed at one end of the driving assembly 2, a positioning assembly 4 is installed at the other end of the driving assembly 2, a picture tube 5 is placed inside the positioning assembly 4, and the positioning assembly 4 is connected to the mounting frame 1;

[0029] The driving component 2 can drive the positioning component 4 to position and clamp the cathode ray tube 5, and at the same time drive the vacuum component 3 to align with the cathode ray tube 5, so that the staff can connect the vacuum component 3 with the cathode ray tube 5 together, thereby improving the work efficiency of the staff.

[0030] Embodiment 2, on the basis of embodiment 1, the driving assembly 2 includes an active worm 201 rotatably connected to the mounting frame 1, a guide rod 202 connected to the mounting frame 1 is provided above the active worm 201, a rotating rod 203 is installed at one end of the active worm 201, and the other end of the active worm 201 is meshedly connected with an active worm wheel 204, the active worm wheel 204 is installed on the driven worm 205, and the driven worm 205 is rotatably installed on the mounting frame 1;

[0031] By rotating the rotating rod 203, the rotating rod 203 drives the active worm 201 to rotate, and the active worm 201 drives the vacuum assembly 3 to move through the thread, so that it gradually approaches the cathode ray tube 5. At the same time, the active worm 201 drives the active worm wheel 204 to rotate through meshing, and the active worm wheel 204 drives the coaxial driven worm 205 to rotate, and the driven worm 205 drives the positioning assembly 4 to clamp the cathode ray tube 5 through meshing. Since the above structure itself has a self-locking function, it will not loosen during the movement.

[0032] Embodiment 3, on the basis of embodiment 1, the vacuum assembly 3 comprises a movable plate 301 threadedly connected to the active worm 201, a positioning rod 302 is symmetrically slidably inserted on the movable plate 301, a positioning spring 303 is sleeved on the positioning rod 302, the positioning rod 302 is symmetrically mounted on the mounting plate 304, a joint 305 is mounted on the mounting plate 304, the joint 305 is connected to an external vacuum pump, a screw hole and a guide hole are respectively opened at the bottom of the movable plate 301, the screw hole is threadedly connected to the active worm 201, and the guide hole is sleeved on the guide rod 202;

[0033] The active worm 201 can drive the moving plate 301 to move, and the moving plate 301 drives the joint 305 on the mounting plate 304 to move close to the cathode ray tube 5, so that it is convenient for the staff to connect the two together, and finally vacuumize through an external vacuum pump. During this period, the positioning rod 302 and the positioning spring 303 are used in coordination to ensure the stability of the joint 305 during movement.

[0034] Embodiment 4, on the basis of embodiment 1, the positioning assembly 4 comprises a cylinder 401 connected to the mounting frame 1, both ends of the cylinder 401 are equidistantly hinged with positioning blocks 402, the positioning blocks 402 are connected by telescopic springs 403, and the outer walls of the positioning blocks 402 form outer inclined surfaces 404, both ends of the cylinder 401 are also slidably sleeved with ring bodies 405, the middle part of the cylinder 401 is rotatably mounted with a driving ring 406, the driving ring 406 is mounted with a driven worm gear 407, and the driven worm gear 407 is meshed and connected with the driven worm 205;

[0035] The driven worm gear 407 can be driven to rotate by the driven worm 205, so that the driving ring 406 can rotate. During the rotation of the driving ring 406, the driving ring 406 squeezes the ring body 405, so that the two ring bodies 405 move toward the two ends of the cylinder 401 respectively, and then the ring body 405 squeezes the outer inclined surface 404 on the surface of the positioning block 402, so that the positioning block 402 contracts and clamps the outer wall of the cathode ray tube 5. At the same time, since the driving ring 406 finally squeezes the ring body 405 through the flat part of the driving ring 406 after rotation, the squeezing pressure is within a reasonable range. When the driving ring 406 continues to rotate, the squeezing pressure of the driving ring 406 on the ring body 405 is reduced, thereby avoiding the damage of the cathode ray tube 5 due to excessive pressure.

[0036] Embodiment 5, on the basis of embodiment 4, both sides of the driving ring 406 are inclined, and the inner wall of the driving ring 406 is equidistantly provided with check valves 408, the outer wall of the cylinder 401 is equidistantly provided with triangular grooves 4011, and one end of the check valve 408 is placed inside the triangular groove 4011, the check valve 408 includes a telescopic rod 4081 connected to the driving ring 406 and symmetrically arranged, a check block 4082 is installed at one end of the telescopic rod 4081, and one side of the check block 4082 forms an inner inclined surface 4083;

[0037] By setting the check valve 408, when rotating in the reverse direction, the triangular groove 4011 can limit the check block 4082 to prevent it from rotating, thereby ensuring that the drive ring 406 always rotates in one direction, so that the cathode ray tube 5 can still be clamped after the vacuum is completed, thereby preventing the cathode ray tube 5 from being damaged due to collision, and at the same time making it easier for the staff to control the operation of the drive ring 406.

[0038] Embodiment 6: On the basis of embodiment 4, an adjuster is rotatably mounted on the ring body 405, and the adjuster comprises a cylinder 4051 rotatably connected to the ring body 405, a screw 4052 is threadedly mounted on the inner thread of the cylinder 4051, a nut 4053 is threadedly mounted on the screw 4052, a push rod 4054 is mounted on one end of the screw 4052, a slider 4055 is mounted on the push rod 4054, the slider 4055 is slidably connected to a slide groove provided on the outer wall of the cylinder 401, and a return spring is also mounted between the slider 4055 and the slide groove;

[0039] When it is necessary to adjust the clamping force on the surface of the cathode ray tube 5, it is only necessary to rotate the barrel 4051. The barrel 4051 drives the screw 4052 to move through the thread, and the screw 4052 drives the push rod 4054 to move. At the same time, the slider 4055 on the push rod 4054 slides in the corresponding slide groove, so as to adjust the length of the regulator. In conjunction with the use of the drive ring 406, the clamping force on the outer wall of the cathode ray tube 5 can be adjusted to meet the pressure requirements when fixing different cathode ray tubes 5.

[0040] Working principle: When working, firstly, by rotating the rotating rod 203, the rotating rod 203 drives the active worm 201 to rotate, and the active worm 201 drives the moving plate 301 to move, and the moving plate 301 drives the joint 305 on the mounting plate 304 to move and get close to the picture tube 5. During this period, the positioning rod 302 and the positioning spring 303 are used in cooperation to ensure the stability of the joint 305 during movement, so that it gradually gets close to the picture tube 5.

[0041] At the same time, the active worm 201 drives the active worm wheel 204 to rotate by meshing, and the active worm wheel 204 drives the coaxial driven worm 205 to rotate, and the driven worm 205 drives the driven worm wheel 407 to rotate, so that the driving ring 406 rotates. During the rotation of the driving ring 406, the driving ring 406 squeezes the ring body 405, so that the two ring bodies 405 move toward the two ends of the cylinder 401 respectively, and then the ring body 405 squeezes the outer inclined surface 404 on the surface of the positioning block 402, so that After the positioning block 402 contracts, it clamps the outer wall of the picture tube 5. At the same time, since the driving ring 406 finally squeezes the ring body 405 through the plane part of the driving ring 406 after rotating, the squeezing pressure is within a reasonable range. When the driving ring 406 continues to rotate, the squeezing pressure of the driving ring 406 on the ring body 405 is reduced, thereby avoiding the picture tube 5 from being damaged due to excessive pressure. Then the staff connects the joint 305 to the picture tube 5 and performs vacuum treatment through an external vacuum pump.

[0042] When it is necessary to adjust the clamping force on the surface of the cathode ray tube 5, it is only necessary to rotate the barrel 4051. The barrel 4051 drives the screw 4052 to move through the thread, and the screw 4052 drives the push rod 4054 to move. At the same time, the slider 4055 on the push rod 4054 slides in the corresponding slide groove, so as to adjust the length of the regulator. In conjunction with the use of the drive ring 406, the clamping force on the outer wall of the cathode ray tube 5 can be adjusted to meet the pressure requirements when fixing different cathode ray tubes 5.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum exhaust device for producing a low-light image intensifier, comprising a mounting frame (1), characterized in that: A driving assembly (2) is installed inside the mounting frame (1); a vacuum assembly (3) is installed at one end of the driving assembly (2); a positioning assembly (4) is installed at the other end of the driving assembly (2); a cathode ray tube (5) is placed inside the positioning assembly (4), and the positioning assembly (4) is connected to the mounting frame (1); The vacuum pumping assembly (3) comprises a movable plate (301) threadedly connected to the active worm (201), a positioning rod (302) symmetrically slidably inserted on the movable plate (301), a positioning spring (303) sleeved on the positioning rod (302), the positioning rod (302) symmetrically mounted on the mounting plate (304), a joint (305) mounted on the mounting plate (304), and the joint (305) connected to an external vacuum pump; The positioning assembly (4) comprises a cylinder (401) connected to the mounting frame (1), positioning blocks (402) are hingedly connected at equal distances at both ends of the cylinder (401), the positioning blocks (402) are connected by telescopic springs (403), and the outer walls of the positioning blocks (402) form outer inclined surfaces (404), and ring bodies (405) are slidably sleeved at both ends of the cylinder (401), and a driving ring (406) is rotatably installed in the middle of the cylinder (401), and a driven worm gear (407) is installed on the driving ring (406), and the driven worm gear (407) is meshedly connected with the driven worm (205).

2. The vacuum exhaust equipment for producing low-light image intensifiers according to claim 1, characterized in that: The driving assembly (2) comprises an active worm (201) rotatably connected to the mounting frame (1); a guide rod (202) connected to the mounting frame (1) is provided above the active worm (201); a rotating rod (203) is mounted on one end of the active worm (201); a driving worm wheel (204) is meshedly connected to the other end of the active worm (201); the active worm wheel (204) is mounted on a driven worm (205); and the driven worm (205) is rotatably mounted on the mounting frame (1).

3. The vacuum exhaust equipment for producing low-light image intensifiers according to claim 1, characterized in that: The bottom of the movable plate (301) is respectively provided with a screw hole and a guide hole, the screw hole is threadedly connected to the active worm (201), and the guide hole is sleeved with the guide rod (202).

4. The vacuum exhaust equipment for producing low-light image intensifiers according to claim 1, characterized in that: The two sides of the driving ring (406) are arranged obliquely, and check valves (408) are installed equidistantly on the inner wall of the driving ring (406); triangular grooves (4011) are opened equidistantly on the outer wall of the cylinder (401), and one end of the check valve (408) is placed inside the triangular groove (4011).

5. The vacuum exhaust equipment for producing low-light image intensifiers according to claim 4, characterized in that: The check valve (408) comprises a telescopic rod (4081) connected to the driving ring (406) and symmetrically arranged, a check block (4082) is installed at one end of the telescopic rod (4081), and an inner inclined surface (4083) is formed on one side of the check block (4082).

6. The vacuum exhaust equipment for producing low-light image intensifiers according to claim 1, characterized in that: The ring body (405) is rotatably mounted with an adjuster, the adjuster comprising a cylinder (4051) rotatably connected to the ring body (405), a screw (4052) being threadedly mounted on the inner thread of the cylinder (4051), a nut (4053) being threadedly mounted on the screw (4052), a push rod (4054) being mounted on one end of the screw (4052), a slider (4055) being mounted on the push rod (4054), the slider (4055) being slidably connected to a slide groove provided on the outer wall of the cylinder (401), and a return spring being mounted between the slider (4055) and the slide groove.

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