CN216608698U

CN216608698U - Multistation helium detection jig

Info

Publication number: CN216608698U
Application number: CN202122674309.7U
Authority: CN
Inventors: 华晨
Original assignee: Wuxi Duolicheng Machinery Technology Co ltd
Current assignee: Wuxi Duolicheng Machinery Technology Co ltd
Priority date: 2021-11-03
Filing date: 2021-11-03
Publication date: 2022-05-27
Anticipated expiration: 2031-11-03

Abstract

The utility model provides a multi-station helium detection jig which comprises a bottom plate, wherein one end of the bottom plate is provided with a vertical plate, the vertical plate is provided with at least two sealing air nozzles, a pressure plate corresponding to the sealing air nozzles is arranged above the bottom plate, one side of the pressure plate, which is far away from the sealing air nozzles, is connected with a movable plate, the movable plate is provided with a movable pressing mechanism for driving the movable plate to be close to or far away from the sealing air nozzles, a placing plate is arranged below the sealing air nozzles, the top of the placing plate is provided with a positioning groove matched with a workpiece, and two ends of the placing plate are provided with height adjusting mechanisms; the multi-station helium testing jig is provided with a plurality of sealing air nozzles, positioning grooves and pressing plates, wherein the positioning grooves and the pressing plates are matched with the sealing air nozzles, when the multi-station helium testing jig is used, a plurality of workpieces can be placed at the same time for helium testing, and the helium testing efficiency can be remarkably improved.

Description

Multistation helium detection jig

Technical Field

The utility model belongs to the technical field of helium detection jigs, and particularly relates to a multi-station helium detection jig.

Background

In the current industrial production process, a columnar hollow metal pipe fitting with strict requirement on sealing performance needs to detect whether a workpiece leaks or not in the factory leaving process. At present, a helium detection mode is commonly adopted, namely, a detected workpiece is installed on a helium detection jig, helium with a certain pressure is filled into the detected workpiece after the detected workpiece is vacuumized, a vacuum box with a certain vacuum degree requirement is arranged outside the detected workpiece, the vacuum box is connected with a leak detection port of a helium mass spectrometer leak detector, and if the detected workpiece leaks, the helium leaking into the vacuum box can be detected by the helium mass spectrometer leak detector.

In the prior art, a chinese utility model patent with the publication number CN213874860U discloses a device for detecting helium in a metal tube, which comprises a bottom plate, wherein a guide rail is fixedly arranged on the upper surface of the bottom plate, sliders are arranged on the left and right sides in the guide rail, support plates are fixedly arranged on the tops of the two sets of sliders, through tubes a and b are respectively and fixedly arranged on the tops of the two sets of support plates, and a helium detector and a vacuum pump are respectively and communicatively arranged on the outer sides of the through tubes a and b; through being provided with screw rod and screw thread section of thick bamboo, the accessible anticlockwise rotation screw thread section of thick bamboo, screw thread section of thick bamboo drive screw rod moves in opposite directions, and the screw rod drives two sets of extension boards and moves inwards, and the extension board drives two sets of positioning disks extrusion and waits to detect tubular metal resonator both ends face.

However, in the prior art, helium detection can be performed on only one workpiece at a time, and the workpiece can be extruded and fixed only by continuously rotating the adjusting threaded cylinder by hand in the process of extruding and fixing the workpiece, which consumes labor and time.

Therefore, a multi-station helium testing jig which can carry out helium testing on a plurality of workpieces at a time and is simple and quick in workpiece installation process needs to be designed to solve the technical problem faced at present.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides the multi-station helium testing jig which can carry out helium testing on a plurality of workpieces at one time and has a simple and quick workpiece installation process.

The technical scheme of the utility model is as follows: multistation helium detection tool, comprising a base plate, the one end of bottom plate is provided with the riser, be provided with two at least sealed air faucets on the riser, the top of bottom plate be provided with the corresponding pressure disk of sealed air cock, on the pressure disk with one side that sealed air cock deviates from mutually is connected with the movable plate, be provided with its removal hold-down mechanism that is close to or keeps away from of drive on the movable plate of sealed air cock, the below of sealed air cock is provided with places the board, the top of placing the board be provided with work piece assorted constant head tank, the both ends of placing the board all are provided with height adjusting mechanism.

The movable pressing mechanism is provided with a lead screw which is vertically in threaded connection with the middle of the movable plate, guide rods which are in sliding connection with the movable plate are symmetrically arranged on two sides of the lead screw, two ends of the lead screw and two ends of each guide rod are fixed to the top of the bottom plate through shaft seats, and a motor which drives the lead screw to rotate is arranged at one end of the lead screw.

And a screw rod is fixedly arranged on one side of the pressure plate, which deviates from the sealing air tap, a screw pipe is connected to the screw rod in a threaded manner, and the screw pipe is vertically fixed on the movable plate.

And a first locking nut corresponding to the end part of the screw pipe is assembled on the screw rod.

The height adjusting mechanism is provided with an adjusting screw rod which is vertically in threaded connection with the end part of the placing plate, and positioning rods which are in sliding connection with the placing plate are symmetrically arranged on two sides of the adjusting screw rod.

And the upper end of the positioning rod is provided with a plug.

And a second locking nut corresponding to the top of the placing plate is arranged on the adjusting screw rod.

And a handle is arranged at the upper end of the adjusting screw rod.

The positioning groove is a V-shaped groove body arranged at the top of the placing plate, and the positioning groove and the placing plate are of an integrated structure.

And three sealing air nozzles are arranged on the vertical plate.

The utility model has the beneficial effects that:

(1) the multi-station helium testing jig is provided with a plurality of sealing air nozzles, positioning grooves and pressing plates, wherein the positioning grooves and the pressing plates are matched with the sealing air nozzles, and a plurality of workpieces can be placed at the same time for helium testing when the multi-station helium testing jig is used, so that the helium testing efficiency can be remarkably improved;

(2) the positioning groove can be used for quickly positioning the workpiece, the height of the positioning groove can be adjusted through the height adjusting mechanism, and the helium detector can be suitable for helium detection of workpieces with different specifications;

(3) during helium detection, an operator only needs to place the workpiece inside the positioning groove, then the workpiece and the sealing air faucet are tightly pressed by the driving pressing plate of the movable pressing mechanism to complete connection between the workpiece and the sealing air faucet, and time and labor are saved without manual pressing.

Drawings

Fig. 1 is a schematic structural diagram of a multi-station helium testing jig according to the present invention.

Fig. 2 is a partially enlarged view of a portion a in fig. 1.

Fig. 3 is a second schematic structural view of the multi-station helium testing jig of the present invention.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the utility model, its application, or uses. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments are to be construed as merely illustrative, and not as limitative, unless specifically stated otherwise.

The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

As shown in fig. 1 to 3, the multi-station helium detection jig comprises a bottom plate 1, wherein one end of the bottom plate 1 is provided with a vertical plate 2, at least two sealing air nozzles 3 are arranged on the vertical plate 2, the sealing air nozzles 3 are connected with a vacuumizing and helium injection pipeline when in use, a pressure plate 4 corresponding to the sealing air nozzles 3 is arranged above the bottom plate 1, one side of the pressure plate 4, which is far away from the sealing air nozzles 3, is connected with a moving plate 11, a moving pressing mechanism 8 for driving the moving plate 11 to be close to or far away from the sealing air nozzles 3 is arranged on the moving plate 11, a placing plate 5 is arranged below the sealing air nozzles 3, a positioning groove 6 matched with a workpiece is arranged at the top of the placing plate 5, and height adjusting mechanisms 7 are arranged at two ends of the placing plate 5; in the embodiment, the helium detector is provided with a plurality of sealing air nozzles 3, positioning grooves 6 matched with the positioning air nozzles 3 and a pressing plate 4, so that a plurality of workpieces can be clamped and fixed simultaneously when the helium detector is used, and the helium detection efficiency can be obviously improved; the positioning groove 6 can be used for quickly positioning the workpiece, the height of the positioning groove 6 can be adjusted through the height adjusting mechanism 7, and the helium detector can be suitable for helium detection of workpieces with different specifications; during helium testing, operating personnel only need place the work piece inside constant head tank 6, then start and remove 8 drive pressure disks 4 of hold-down mechanism and compress tightly the work piece and sealed air cock 3 and can accomplish being connected between work piece and the sealed air cock 3, need not the manual work and compress tightly labour saving and time saving.

As a specific implementation manner of the moving pressing mechanism in the above embodiment, the moving pressing mechanism 8 has a lead screw 802 vertically screwed to the middle of the moving plate 11, a lead screw nut screwed to the lead screw 802 is assembled on the moving plate 11, guide rods 801 slidably connected to the moving plate 11 are symmetrically disposed on both sides of the lead screw 802, a linear bearing slidably connected to the guide rods 801 is fixedly disposed on the moving plate 11, both ends of the lead screw 802 and the guide rods 801 are fixed to the top of the bottom plate 1 through a shaft seat 804, an end of the guide rod 801 is fixedly connected to the shaft seat 804, the lead screw 802 is rotatably connected to the shaft seat 804, and one end of the lead screw 802 is provided with a motor 803 for driving the lead screw 802 to rotate; the motor 803 rotates forward and backward after being started, the movable screw 802 can be driven to rotate forward and backward, the movable plate 11 is driven to be close to and far away from the sealing air nozzle 3 after the screw 802 rotates forward and backward, the compressing and releasing actions on the workpiece are completed, and the fixture can be suitable for fixing workpieces with different lengths after being adjusted through the initial position and the compressing position of the screw 802.

However, for those workpieces which cannot be fixed within the stroke of the lead screw 802, a screw 9 is fixedly arranged on one side of the pressure plate 4, which is away from the sealing air tap 3, the screw 9 is in threaded connection with a screw tube 10, the screw tube 10 is vertically fixed on the moving plate 11, the screw 9 is adjusted relative to the screw 10 along the axial direction thereof, the screw 9 is rotated, the screw 9 is adjusted relative to the screw tube 10, the pressure plate 4 can be further adjusted to be close to the sealing air tap 3, and the workpiece can be suitable for workpieces with smaller length; furthermore, a first locking nut 12 corresponding to the end of the screw tube 10 is assembled on the screw 9, and after the screw 9 is adjusted, the first locking nut 12 is screwed to abut against the screw tube 10, so that the screw 9 is prevented from moving relative to the screw tube 10 through thread locking when in use.

As a specific embodiment of the height adjusting mechanism, as shown in fig. 2, the height adjusting mechanism 7 has an adjusting screw rod 703 vertically screwed to the end of the placing plate 5, positioning rods 701 slidably connected to the placing plate 5 are symmetrically provided on both sides of the adjusting screw rod 703, and the placing plate 5 can be driven to move up and down by rotating the adjusting screw rod 703 forward and backward, so that the heights of the placing plate 5 and the positioning groove 6 can be adjusted to be suitable for workpieces having different diameters.

Further, a plug 702 is arranged at the upper end of the positioning rod 701, the plug 702 is a circular plate body concentrically connected with the top end of the positioning rod 701 to form an integral structure, the diameter of the plug 702 is slightly larger than that of the positioning rod 701, and the plug can block and limit the placing plate 5.

In order to avoid the movement of the height of the placing plate 5 after the adjustment is completed, the adjusting screw 703 is provided with a second locking nut 705 corresponding to the top of the placing plate 5, and the placing plate 5 can be prevented from moving by abutting and screwing the second locking nut 705 with the placing plate 5.

In order to facilitate screwing of the adjusting screw 703, the upper end of the adjusting screw 703 is provided with a handle 704.

As a specific implementation mode of constant head tank 6, constant head tank 6 is the V type cell body that sets up at placing 5 tops of board, and constant head tank 6 with place 5 structures as an organic whole of board, through the cell body of V type, can fix a position the hollow cylinder work piece of placing inside it fast.

As a more specific embodiment, three sealing nozzles 3 are arranged on the vertical plate 2, and three positioning grooves 6 and three pressing disks 4 are correspondingly arranged, so that the helium detection can be simultaneously performed on three workpieces.

Thus, various embodiments of the present invention have been described in detail. Some details well known in the art have not been described in order to avoid obscuring the concepts of the present invention. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a multistation helium detection tool, its characterized in that, comprising a base plate, the one end of bottom plate is provided with the riser, be provided with two at least sealed air faucets on the riser, the top of bottom plate be provided with the corresponding pressure disk of sealed air cock, on the pressure disk with one side that sealed air cock deviates from mutually is connected with the movable plate, be provided with on the movable plate and drive it and be close to or keep away from the removal hold-down mechanism of sealed air cock, the below of sealed air cock is provided with places the board, the top of placing the board be provided with work piece assorted constant head tank, the both ends of placing the board all are provided with height adjusting mechanism.

2. The multi-station helium testing jig of claim 1, which is characterized in that: the movable pressing mechanism is provided with a lead screw which is vertically in threaded connection with the middle of the movable plate, guide rods which are in sliding connection with the movable plate are symmetrically arranged on two sides of the lead screw, two ends of the lead screw and two ends of each guide rod are fixed to the top of the bottom plate through shaft seats, and a motor which drives the lead screw to rotate is arranged at one end of the lead screw.

3. The multi-station helium testing jig of claim 1, which is characterized in that: and a screw rod is fixedly arranged on one side of the pressure plate, which deviates from the sealing air tap, a screw pipe is connected to the screw rod in a threaded manner, and the screw pipe is vertically fixed on the movable plate.

4. The multi-station helium testing jig of claim 3, wherein: and a first locking nut corresponding to the end part of the screw pipe is assembled on the screw rod.

5. The multi-station helium testing jig as claimed in claim 1, wherein: the height adjusting mechanism is provided with an adjusting screw rod which is vertically in threaded connection with the end part of the placing plate, and positioning rods which are in sliding connection with the placing plate are symmetrically arranged on two sides of the adjusting screw rod.

6. The multi-station helium testing jig of claim 5, wherein: and the upper end of the positioning rod is provided with a plug.

7. The multi-station helium testing jig of claim 5, wherein: and a second locking nut corresponding to the top of the placing plate is arranged on the adjusting screw rod.

8. The multi-station helium testing jig of claim 5, wherein: and a handle is arranged at the upper end of the adjusting screw rod.

9. The multi-station helium testing jig of claim 1, which is characterized in that: the positioning groove is a V-shaped groove body arranged at the top of the placing plate, and the positioning groove and the placing plate are of an integrated structure.

10. The multi-station helium testing jig of any one of claims 1 to 9, which is characterized in that: and three sealing air nozzles are arranged on the vertical plate.