A vacuum test box for automatic sampling

Abstract

The present invention relates to the technical field of test boxes, and in particular to an automatic sampling vacuum test box, which saves equipment cost and test time and improves test efficiency; the present invention comprises: a box body, which is provided with a feed port and a sampling port, a tray is slidably installed inside the box body, and sealed doors are provided at the feed port and the sampling port; an equipment box, which is installed in a liftable manner inside the box body, a turntable is rotatably installed on the equipment box, two groups of mechanical claws are symmetrically arranged on the turntable, and the equipment box can be turned over during the lifting process inside the box body; wherein a separator is also installed on the side wall of the box body, and the separator is used to seal and separate the box body.

Description

Technical Field

[0001] The invention relates to the technical field of test chambers, in particular to an automatic sampling vacuum test chamber. Background Art

[0002] Pipe clamps are a commonly used accessory in industrial pipeline connections. They are a short piece of pipe used to connect two pipes, also called an external joint. Pipe clamps are also widely used in civil construction, industry, agriculture and other fields because of their ease of use.

[0003] In addition to most standard pipe clamps, pipe clamps used in high temperature environments also need to be tested at high temperature using a vacuum test chamber before leaving the factory. The test content includes the change in the inner diameter of the pipe clamp at different times under the same high temperature. When using existing test chambers, tests can only be carried out in batches. For example, a 24-hour test is carried out first, followed by a 48-hour test. It is difficult to ensure that the test temperature is not changed while the test is being carried out at the same time, which is time-consuming. Alternatively, multiple test chambers are used for synchronous testing, which is costly. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides an automatic sampling vacuum test box which saves equipment cost and test time and improves test efficiency.

[0005] An automatic sampling vacuum test box of the present invention comprises:

[0006] A box body, wherein a feed port and a sampling port are arranged on the box body, a tray is slidably mounted inside the box body, and sealing doors are arranged at the feed port and the sampling port;

[0007] An equipment box, the equipment box can be lifted and lowered inside the box, a turntable is rotatably mounted on the equipment box, two sets of mechanical claws are symmetrically arranged on the turntable, and the equipment box can be turned over during the lifting process inside the box;

[0008] Wherein, a separator is also installed on the side wall of the box body, and the separator is used to seal and separate the box body.

[0009] Preferably, two groups of vertical guide rails are symmetrically arranged on the inner wall of the box body, and a second slider is slidably installed on each group of the vertical guide rails, and a connecting shaft is fixedly installed on the second slider. The two groups of connecting shafts are respectively rotatably connected to the two side ends of the equipment box, and a driving box is installed on the equipment box to drive the equipment box to rotate along the axis of the pallet.

[0010] Preferably, a third gear is fixedly sleeved on the connecting shaft, a second motor is fixedly installed inside the equipment box, the output end of the second motor passes through the equipment box, a fourth gear is fixedly sleeved on the output end of the second motor, the fourth gear is meshingly connected with the third gear, and the driving box sealing cover is arranged on the outside of the fourth gear and the third gear.

[0011] Preferably, the separator comprises a sealed box fixedly mounted on the side wall of the box body, a partition door is slidably mounted in the sealed box, a slot for the partition door to pass through is provided between the sealed box and the inside of the box body, and a break only for the partition door to pass through is also provided on the vertical guide rail.

[0012] Preferably, a rack is provided on the partition door along the direction of the travel route, a main shaft is rotatably installed in the sealed box, a third motor is fixedly installed on the sealed box, the third motor is used to drive the main shaft to rotate, a fifth gear is fixedly sleeved on the main shaft, and the fifth gear is meshed with the rack for transmission.

[0013] Preferably, a plurality of rollers are rotatably mounted inside the sealing box.

[0014] Preferably, a gear ring is coaxially arranged on the end face of the turntable located inside the equipment box, a first motor is fixedly installed inside the equipment box, a first gear is arranged at the output end of the first motor, and the first gear is meshingly connected with the gear ring.

[0015] Preferably, the mechanical claw comprises an inner tube fixedly mounted on a rotating disk, and at least three groups of ejector pins are arranged on the inner tube in a circumferential array, and the three groups of ejector pins slide synchronously along the radial direction of the inner tube.

[0016] Preferably, a transmission shaft is coaxially rotatably installed inside the inner tube, an adjustment disk is fixedly sleeved on the transmission shaft, at least three groups of guide grooves are arranged in a circular array on the adjustment disk, each group of the push pins is provided with a guide column, and several groups of the guide columns are respectively slidably installed in several groups of guide grooves.

[0017] Preferably, a second gear is fixedly sleeved on the end face of the transmission shaft located inside the equipment box, a U-shaped frame is slidably mounted on the turntable, both side ends of the U-shaped frame are provided with teeth, and are respectively meshed and connected with two groups of second gears, and the U-shaped frame is driven by a linear motor fixedly mounted on the turntable.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: when sampling is required, the equipment box is controlled to descend until the two groups of mechanical claws respectively grasp the two groups of pipe clamp workpieces symmetrically placed on the tray, and then the equipment box is controlled to rise. During the rising process, the equipment box is controlled to flip so that the side grasping the pipe clamp workpiece faces upward until it rises to the sampling port; before opening the sealing door at the sampling port, the box body is sealed and separated into two independent upper and lower spaces by a separator, so that the equipment box and the tray are respectively located in two independent spaces, thereby avoiding affecting the remaining pipe clamp workpieces on the tray when the sampling port is opened; the pipe clamp workpieces in this period can be removed by opening the sealing door at the sampling port, and then the sealing door at the sampling port is closed, and the upper space is heated to make it have the same temperature as the lower space; then the separator is opened to restore the overall spatial distribution inside the box body, and according to the test requirements, the above process is repeated at a specific time, so that batch sampling of several pipe clamp workpieces can be achieved, which saves equipment cost and test time and improves test efficiency without affecting the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 It is an enlarged schematic diagram of the structure of the pallet and equipment box;

[0021] Figure 3 It is an enlarged schematic diagram of the connection between the turntable and the equipment box and other structures;

[0022] Figure 4 It is an enlarged schematic diagram of the structure inside the equipment box;

[0023] Figure 5 It is an enlarged cross-sectional view of the structure of the turntable;

[0024] Figure 6 It is an enlarged schematic diagram of the structure of the mechanical claw;

[0025] Figure 7 yes Figure 4 A schematic diagram of the structure of the middle A part;

[0026] Figure 8 It is an enlarged schematic diagram of the structure of the pallet;

[0027] Fig. 9 It is an enlarged schematic diagram of the structure of the separator;

[0028] Fig.10 is an enlarged schematic diagram of the connection between the rack and the fifth gear and other structures;

[0029] Markings in the attached drawings: 1. box body; 2. feed port; 3. sampling port; 4. tray; 5. equipment box; 6. turntable; 7. mechanical claw; 8. separator; 9. pipe clamp workpiece; 10. longitudinal guide rail; 11. first slider; 12. vertical guide rail; 13. second slider; 14. connecting shaft; 15. drive box; 16. linear drive mechanism; 17. gear ring; 18. first motor; 19. first gear; 20. inner tube; 21. mounting seat; 22. adjustment plate; 23. guide groove; 24. top pin; 25. guide column; 26. transmission shaft; 27. second gear; 28. linear motor; 29. ​​U-shaped frame; 30. third gear; 31. second motor; 32. fourth gear; 33. sealing box; 34. partition door; 35. rack; 36. main shaft; 37. third motor; 38. fifth gear; 39. roller. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely 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.

[0031] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside”, etc., are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. This embodiment is written in a progressive manner.

[0033] like Figures 1 to 10 As shown, an automatic sampling vacuum test box of the present invention comprises:

[0034] The box body 1 has a feed port 2 and a sampling port 3 at the front and top of the box body 1, respectively. A tray 4 is slidably mounted inside the box body 1. The tray 4 enters and exits the box body 1 through the feed port 2. Sealed doors are provided at the feed port 2 and the sampling port 3.

[0035] The equipment box 5 can be lifted and lowered inside the box body 1. A turntable 6 is rotatably mounted on the equipment box 5. Two sets of mechanical claws 7 are symmetrically arranged on the turntable 6 for lifting the pipe clamp workpiece 9 on the tray 4. The equipment box 5 can be turned over during the lifting process inside the box body 1.

[0036] A separator 8 is also installed on the side wall of the box body 1, and the separator 8 is used to seal and separate the box body 1;

[0037] Specifically in this embodiment, two groups of longitudinal guide rails 10 are symmetrically arranged on the inner wall of the box body 1, and the tray 4 is slidably installed on the longitudinal guide rails 10 by relying on the first slider 11; two groups of vertical guide rails 12 are also symmetrically arranged on the inner wall of the box body 1, and a second slider 13 is slidably installed on each group of vertical guide rails 12, and a connecting shaft 14 is fixedly installed on the second slider 13. The two groups of connecting shafts 14 are respectively rotatably connected to the two side ends of the equipment box 5, and a driving box 15 is installed on the equipment box 5 for driving the equipment box 5 to rotate along the axis of the tray 4;

[0038] Furthermore, the second slider 13 is lifted and lowered by a linear drive mechanism 16 installed on the top of the box body 1, wherein the linear drive mechanism 16 can be a linear drive device such as a screw nut pair, a linear motor, a hydraulic cylinder, and a pneumatic cylinder; Figure 8 As shown, the tray 4 is provided with a plurality of groups of placement grooves for placing the pipe clamp workpieces 9, and the plurality of groups of placement grooves are arranged in a circular array. When the tray 4 is pushed into the box body 1, the axes of the plurality of groups of placement grooves coincide with the axis of the turntable 6. In this embodiment, the positioning of the tray 4 can be displayed by providing a sensor such as a proximity switch or a pressure switch;

[0039] Several pipe clamp workpieces 9 to be tested are vertically placed in several groups of storage slots, and pushed into the box body 1, and the feed port 2 is closed. After setting the test temperature and test time, the several pipe clamp workpieces 9 are tested. Since it is necessary to take out several pipe clamp workpieces 9 in batches at different time periods, observe the test results. When sampling is required, the equipment box 5 is controlled to descend until the two groups of mechanical claws 7 respectively grasp the two groups of pipe clamp workpieces 9 symmetrically placed on the tray 4, and then the equipment box 5 is controlled to rise. During the rising process, the equipment box 5 is controlled to flip so that the side holding the pipe clamp workpiece 9 faces upward until it rises to the sampling port 3;

[0040] Before opening the sealing door at the sampling port 3, the box body 1 is sealed and separated into two independent upper and lower spaces by the separator 8, so that the equipment box 5 and the tray 4 are respectively located in the two independent spaces to avoid affecting the remaining pipe clamp workpieces 9 on the tray 4 when the sampling port 3 is opened; the sealing door at the sampling port 3 can be opened to remove the pipe clamp workpieces 9 during this period, and then the sealing door at the sampling port 3 is closed to heat the upper space to make it have the same temperature as the lower space; then the separator 8 is opened to restore the overall spatial distribution inside the box body 1, and according to the test requirements, at a specific time, the above process is repeated, and at the same time, the turntable 6 is driven to rotate a certain angle so that the two groups of mechanical claws 7 are respectively aimed at the remaining pipe clamp workpieces 9 for grabbing, so that batch sampling of several pipe clamp workpieces 9 can be achieved, without affecting the test results, saving equipment costs and test time, and improving test efficiency.

[0041] Further, the specific structure of the separator 8 is as follows Fig. 9 and Fig.10 As shown, the separator 8 includes a sealed box 33 fixedly mounted on the side wall of the box body 1, a partition door 34 is slidably mounted in the sealed box 33, a slot for the partition door 34 to pass through is provided between the sealed box 33 and the inside of the box body 1, and a break is also provided on the vertical guide rail 12 only for the partition door 34 to pass through, and the length of the second slider 13 is greater than the length of the break;

[0042] A rack 35 is provided on the partition door 34 along the direction of the travel route, a main shaft 36 is rotatably installed in the sealing box 33, a third motor 37 is fixedly installed on the sealing box 33, the third motor 37 is used to drive the main shaft 36 to rotate along its own axis, a fifth gear 38 is fixedly sleeved on the main shaft 36, and the fifth gear 38 is meshed with the rack 35 for transmission; in this embodiment, at least two sets of racks 35 and fifth gears 38 are provided;

[0043] Furthermore, a plurality of rollers 39 are rotatably mounted inside the sealing box 33 to convert the sliding friction between the partition door 34 and the sealing box 33 into rolling friction, thereby reducing the friction force;

[0044] By controlling the forward and reverse rotation of the third motor 37, the main shaft 36 is driven to rotate along its own axis. Under the meshing transmission of the fifth gear 38 and the rack 35, the partition door 34 is controlled to enter and exit the interior of the box body 1, thereby realizing the separation and restoration of the interior of the box body 1; at the same time, a linear drive device such as a screw nut pair, a linear motor, a hydraulic cylinder, and a pneumatic cylinder can also be used to drive the partition door 34 to move.

[0045] How to drive the turntable 6 to rotate? Figure 4 and Figure 5As shown, a gear ring 17 is coaxially arranged on the end face of the turntable 6 located inside the equipment box 5, a first motor 18 is fixedly installed inside the equipment box 5, a first gear 19 is arranged at the output end of the first motor 18, and the first gear 19 is meshingly connected with the gear ring 17; by controlling the start and stop of the first motor 18, the meshing transmission of the first gear 19 and the gear ring 17 is utilized to drive the turntable 6 to rotate a certain angle along its own axis.

[0046] In order to facilitate the grasping of the pipe clamp workpiece 9, the mechanical claw 7 includes an inner tube 20 fixedly mounted on the turntable 6, and at least three groups of ejector pins 24 are arranged in a circumferential array on the inner tube 20, and the three groups of ejector pins 24 slide synchronously along the radial direction of the inner tube 20; further, a transmission shaft 26 is coaxially mounted inside the inner tube 20, and an adjustment disk 22 is fixedly sleeved on the transmission shaft 26, and a mounting seat 21 is arranged on the inner wall of the inner tube 20 for rotatably supporting the adjustment disk 22, and at least three groups of guide grooves 23 are arranged in a circumferential array on the adjustment disk 22, and a guide column 25 is arranged at one end of each group of ejector pins 24 located inside the inner tube 20, and several groups of guide columns 25 are respectively slidably mounted in several groups of guide grooves 23;

[0047] In order to drive the two groups of mechanical claws 7 to operate synchronously, a second gear 27 is fixedly sleeved on the end face of the transmission shaft 26 located inside the equipment box 5, and a U-shaped frame 29 is slidably installed on the turntable 6. Both side ends of the U-shaped frame 29 are provided with teeth, and are respectively meshed and connected with the two groups of second gears 27. The U-shaped frame 29 is driven by a linear motor 28 fixedly installed on the turntable 6; in this embodiment, since the two groups of transmission shafts 26 have opposite rotation directions, the guide grooves 23 on the two groups of adjustment disks 22 have opposite deflection directions; by controlling the extension and retraction of the linear motor 28, the U-shaped frame 29 drives the two groups of second gears 27 to rotate synchronously, and under the guiding action of the guide grooves 23 and the guide columns 25, the ejector pins 24 on the two groups of inner tubes 20 are driven to extend and retract synchronously, thereby realizing the synchronous grasping of the two groups of pipe clamp workpieces 9.

[0048] Specifically, how to drive the device box 5 to flip: a third gear 30 is fixedly sleeved on the connecting shaft 14, a second motor 31 is fixedly installed inside the device box 5, the output end of the second motor 31 passes through the device box 5, and a fourth gear 32 is fixedly sleeved on the output end of the second motor 31, the fourth gear 32 is meshed and connected with the third gear 30, and a sealing cover of the driving box 15 is arranged on the outside of the fourth gear 32 and the third gear 30; by starting the second motor 31, the fourth gear 32 is driven to rotate, and since the third gear 30 is fixed, the fourth gear 32 drives the device box 5 and other structures to rotate along the axis of the third gear 30, so as to drive the device box 5 to rotate.

[0049] The present invention provides an automatic sampling vacuum test box, which during operation:

[0050] First, when sampling, the device box 5 is controlled to descend to a certain height, and then the linear motor 28 is controlled to extend and retract, so that the U-shaped frame 29 drives the two sets of second gears 27 to rotate synchronously, and under the guidance of the guide groove 23 and the guide column 25, the ejector pins 24 on the two sets of inner tubes 20 are driven to extend and retract synchronously, so as to achieve the synchronous grasping of the two sets of pipe clamp workpieces 9, and then the device box 5 is controlled to rise; during the rising process, the second motor 31 is started to drive the fourth gear 32 to rotate, so that the fourth gear 32 drives the device box 5 and other structures to rotate along the axis of the third gear 30, so that the side with the pipe clamp workpiece 9 is facing upward;

[0051] Before opening the sealing door at the sampling port 3, the third motor 37 is controlled to rotate forward and reversely to drive the main shaft 36 to rotate along its own axis. Under the meshing transmission of the fifth gear 38 and the rack 35, the partition door 34 is controlled to enter and exit the box body 1, and the box body 1 is sealed and separated into two independent upper and lower spaces, so that the equipment box 5 and the tray 4 are respectively located in the two independent spaces;

[0052] Afterwards, open the sealing door at the sampling port 3 to remove the pipe clamp workpiece 9 of this period, and then close the sealing door at the sampling port 3 to heat the upper space to make it the same temperature as the lower space; then control the forward and reverse rotation of the third motor 37 to restore the overall spatial distribution inside the box body 1, control the equipment box 5 to descend and rotate and reset the equipment box 5; according to the test requirements, at a specific time, repeat the above process, and at the same time drive the turntable 6 to rotate a certain angle, so that the two groups of mechanical claws 7 are respectively aimed at the remaining pipe clamp workpieces 9 to grab them, so as to realize batch sampling of several pipe clamp workpieces 9.

[0053] The automatic sampling vacuum test box of the present invention has common mechanical installation, connection or setting methods, which can be implemented as long as they can achieve the beneficial effects.

[0054] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An automatic sampling vacuum test chamber, characterized in that: include: A box body, wherein a feed port and a sampling port are arranged on the box body, a tray is slidably mounted inside the box body, and sealing doors are arranged at the feed port and the sampling port; An equipment box, the equipment box can be lifted and lowered inside the box, a turntable is rotatably mounted on the equipment box, two sets of mechanical claws are symmetrically arranged on the turntable, and the equipment box can be turned over during the lifting process inside the box; Wherein, a separator is also installed on the side wall of the box body, and the separator is used to seal and separate the box body; Two groups of vertical guide rails are symmetrically arranged on the inner wall of the box body, a second slider is slidably mounted on each group of the vertical guide rails, a connecting shaft is fixedly mounted on the second slider, the two groups of connecting shafts are rotatably connected to the two side ends of the equipment box respectively, and a driving box is installed on the equipment box for driving the equipment box to rotate along the axis of the third gear; A third gear is fixedly sleeved on the connecting shaft, a second motor is fixedly installed inside the equipment box, an output end of the second motor passes through the equipment box, a fourth gear is fixedly sleeved on the output end of the second motor, the fourth gear is meshingly connected with the third gear, and the driving box sealing cover is arranged on the outside of the fourth gear and the third gear.

2. The automatic sampling vacuum test chamber according to claim 1, characterized in that: The separator comprises a sealed box fixedly mounted on the side wall of the box body, a partition door is slidably mounted in the sealed box, a slot for the partition door to pass through is arranged between the sealed box and the inside of the box body, and a break only for the partition door to pass through is also arranged on the vertical guide rail.

3. The automatic sampling vacuum test chamber according to claim 2, characterized in that: A rack is provided on the partition door along the direction of the travel route, a main shaft is rotatably installed in the sealed box, a third motor is fixedly installed on the sealed box, the third motor is used to drive the main shaft to rotate, a fifth gear is fixedly sleeved on the main shaft, and the fifth gear is meshed with the rack for transmission.

4. The automatic sampling vacuum test chamber according to claim 3, characterized in that: A plurality of rollers are rotatably mounted inside the sealing box.

5. The automatic sampling vacuum test chamber according to claim 1, characterized in that: A gear ring is coaxially arranged on the end surface of the turntable located inside the equipment box, a first motor is fixedly installed inside the equipment box, a first gear is arranged at the output end of the first motor, and the first gear is meshed and connected with the gear ring.

6. The automatic sampling vacuum test chamber according to claim 5, characterized in that: The mechanical claw comprises an inner insert tube fixedly mounted on a rotating disk, and at least three groups of ejector pins are arranged on the inner insert tube in a circumferential array, and the three groups of ejector pins slide synchronously along the radial direction of the inner insert tube.

7. The automatic sampling vacuum test chamber according to claim 6, characterized in that: A transmission shaft is coaxially mounted inside the inner tube for rotation, an adjustment disk is fixedly sleeved on the transmission shaft, at least three groups of guide grooves are arranged in a circular array on the adjustment disk, each group of the ejector pins is provided with a guide column, and several groups of the guide columns are slidably mounted in several groups of guide grooves respectively.

8. The automatic sampling vacuum test chamber according to claim 7, characterized in that: The transmission shaft is provided with a second gear on its end face inside the equipment box, a U-shaped frame is slidably mounted on the turntable, both side ends of the U-shaped frame are provided with teeth, which are respectively meshed with two sets of second gears, and the U-shaped frame is driven by a linear motor fixedly mounted on the turntable.

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