Dewar cold sealing auxiliary device
By designing a Dewar cold sealing auxiliary device, and using the main body and positioning groove to guide the exhaust pipe, the problem of inconsistent cold sealing positions was solved, thus achieving stability in the Dewar cold sealing process and consistency in product quality.
Patent Information
- Application Number
- CN202520067324.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-13
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2035-01-13
AI Technical Summary
In existing technologies, the cold sealing process of infrared detectors relies on the operator's experience, which leads to inconsistent cold sealing positions, easily scratches the Dewar, and causes product damage and inconsistent quality.
Design a Dewar cold sealing auxiliary device, including a body and a positioning groove. The body covers the Dewar, and the positioning groove is used to guide the movement of the exhaust pipe and provide a positioning part to fix the cold sealing clamp, so as to ensure the stability and accuracy of the cold sealing process.
It effectively prevents Dewar scratches, ensures consistent cold sealing positions, improves product quality consistency, and avoids poor sealing and Dewar damage.
Smart Images
Figure CN223662548U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to infrared detector technical field, in particular to a dewar cold seal auxiliary device. BACKGROUND
[0002] Infrared detector needs to be packaged in dewar, and is connected with refrigerator, utilizes dewar high vacuum heat insulation principle to guarantee that infrared focal plane chip works in low temperature environment. The heat load of dewar is the comprehensive index of the heat insulation capacity of dewar, and its size is an important index for infrared whole machine designer to select refrigerator.
[0003] Dewar realizes the purpose of low heat consumption by its internal high vacuum, when infrared detector is packaged in dewar, dewar is welded gradually to complete structure, dewar is connected with exhaust station through exhaust pipe, then exhausts on exhaust station, finally cold seal pliers are used to cold seal operation to product exhaust pipe, guaranteeing the high vacuum inside dewar.
[0004] Cold seal is positioned by operator visual inspection. The position of cold seal pliers cutting edge does not exist constraint in axial and radial directions of exhaust pipe, can only rely on the experience of operator to complete operation, and since the position is narrow, the position of cutting edge cannot be observed, can only rely on experience to complete operation, and the requirement to personnel is higher, leading to the product being easily scratched, the length of exhaust pipe after cutting being inconsistent due to inconsistent cold seal position, causing product damage and scrapping or poor quality consistency of product. UTILITY MODEL CONTENTS
[0005] The utility model provides a dewar cold seal auxiliary device for solving at least one of the above technical problems.
[0006] The utility model provides a dewar cold seal auxiliary device, comprising:
[0007] The body is internally hollow, and one end of the body has an opening communicating with the hollow space, for covering the dewar with the body;
[0008] The positioning groove is formed in the side wall of the body and extends upward from the opening of the body, for moving the exhaust pipe of the dewar in the positioning groove.
[0009] In one embodiment, the body side is provided with a positioning step, and when the body is installed on the dewar, the positioning step is in contact with the dewar window seat.
[0010] In one embodiment, the distance between the uppermost end of the dewar window seat and the uppermost end inside the body is M, the distance between the uppermost end of the dewar window seat and the dewar window piece is N, and M is greater than N.
[0011] In one embodiment, when the positioning step is in contact with the Dewar window seat, the exhaust pipe of the Dewar is located at the uppermost end of the positioning groove.
[0012] In one embodiment, the positioning groove comprises a longitudinal groove, which is vertically arranged or obliquely arranged.
[0013] In one embodiment, the positioning groove comprises a longitudinal groove and a transverse groove which are sequentially communicated, the number of the longitudinal groove is at least one, and the number of the transverse groove is at least one.
[0014] In one embodiment, the transverse groove is horizontally arranged or obliquely arranged upward.
[0015] In one embodiment, the opening end of the body is provided with a positioning portion at the positioning groove, the positioning portion is outwardly bent, the positioning portion must at least exceed two ends of the positioning groove, and the positioning portion is provided with a notch at the longitudinal groove, the notch is communicated with the longitudinal groove.
[0016] In one embodiment, the positioning portion is circumferentially arranged along the body, and the positioning portion covers at least 60% of the circumferential range of the body.
[0017] In one embodiment, the opening end of the body is further fixedly provided with at least two supporting portions, the height of the supporting portion is the same as that of the positioning portion, and the supporting portion and the positioning portion are uniformly distributed at the opening end of the body.
[0018] Compared with the prior art, the utility model has the advantages that:
[0019] The Dewar cold sealing auxiliary device provided by the utility model is characterized in that the body with the opening and the cavity can effectively cover the Dewar, avoids direct contact with the surface of the Dewar in the operation process, and prevents scratches or damage to the Dewar; the positioning groove extends upward from the opening of the body, allows the exhaust pipe of the Dewar to smoothly move along the positioning groove, and also plays a positioning role on the exhaust pipe of the Dewar, preventing the body from moving and affecting the cold sealing effect in the cold sealing process of the Dewar.
[0020] In the cold sealing process, the positioning portion provides a positioning position for the cold sealing clamp, fixes the sealing position of the cold sealing clamp on the exhaust pipe, ensures the stability and accuracy of the cold sealing clamp in the operation process, effectively avoids the problems of poor sealing or damage to the Dewar caused by position deviation, and improves the consistency of product quality. BRIEF DESCRIPTION OF DRAWINGS
[0021] The utility model will be described in more detail based on the embodiments and with reference to the drawings hereinafter.
[0022] Figure 1is one of the overall structure schematic diagram of the Dewar cold sealing auxiliary device of the present application;
[0023] Figure 2 is the perspective view of the Dewar cold sealing auxiliary device of the present application in cooperation with the Dewar;
[0024] Figure 3 is the overall structure schematic diagram of the Dewar cold sealing auxiliary device of the present application
[0025] Figure 4 is the overall structure schematic diagram of the Dewar cold sealing auxiliary device of the present application
[0026] Figure 5 is the overall structure schematic diagram of the Dewar cold sealing auxiliary device of the present application
[0027] Figure 6 is the overall structure schematic diagram of the Dewar cold sealing auxiliary device of the present application
[0028] Figure 7 is the schematic diagram of the Dewar cold sealing auxiliary device of the present application in cooperation with the cold sealing pliers;
[0029] Figure 8 is the structure schematic diagram of the prior art Dewar.
[0030] Reference signs:
[0031] 10-body; 11-positioning groove; 111-longitudinal groove; 112-transverse groove; 12-positioning step; 13-positioning part; 14-notch; 15-supporting part;
[0032] 20-Dewar; 21-window piece; 22-window seat; 23-exhaust pipe;
[0033] 30-cold sealing pliers. DETAILED DESCRIPTION
[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0035] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), if the certain posture changes, the directional indications also change accordingly.
[0036] In addition, the description related to "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor in the protection scope claimed by the present application.
[0037] The utility model will be further described below with reference to the drawings.
[0038] As Figure 8 shown, the top of the existing dewar 20 is a window sheet 21, and the side of the dewar 20 is provided with a window seat 22 and an exhaust pipe 23. The dewar 20 belongs to the existing product, and its specific structure will not be described here.
[0039] As Figures 1-4 shown, the utility model provides a dewar cold sealing auxiliary device, including body 10, the material of body 10 is polytetrafluoroethylene or polyamide or polyformaldehyde or polyether ether ketone, the inside of body 10 is provided with cavity, and one end of body 10 has the opening that communicates with the cavity, in actual production, through body 10, dewar 20 is covered, positioning groove 11 is set up in the lateral wall of body 10, and positioning groove 11 extends upwards from the opening of body 10, is used for making dewar 20 exhaust pipe 23 moves in positioning groove 11.
[0040] By designing the body 10 with the opening and the cavity, the body 10 can effectively cover the dewar 20, avoid direct contact with the surface of the dewar 20 during the operation process, especially the process of cold sealing clamp 30 blocking the exhaust pipe 23, so as to prevent the possible scratch or damage to the dewar 20. The positioning groove 11 extends upwards from the opening of the body 10, allowing the exhaust pipe 23 of the dewar 20 to move smoothly along the positioning groove 11. The positioning groove 11 also plays a positioning role for the exhaust pipe 23 of the dewar 20, preventing the body 10 from moving during the cold sealing process of the dewar 20 and affecting the cold sealing effect.
[0041] Preferably, as Figures 1-4 shown, positioning steps 12 are arranged on the side of the body 10. When the body 10 is installed on the dewar 20, the positioning steps 12 are in contact with the window seat 22, so that the body 10 can be stably arranged on the dewar 20, avoiding the body 10 from falling off the dewar 20 during the cold sealing process of the dewar 20, and better fixing and restraining the body 10.
[0042] Further, as Figure 2As shown, the distance between the uppermost end of the Dewar window seat 22 and the uppermost end of the body 10 is set as M, the distance between the uppermost end of the Dewar window seat 22 and the Dewar 20 window sheet 21 is set as N, the length relationship between M and N is set as M>N, and when the positioning step 12 is in contact with the window seat 22, there is a gap between the uppermost end of the body 10 and the window sheet 21, which ensures that the upper end of the body 10 will not contact the window sheet 21 of the Dewar 20. Once the upper end of the body 10 is impacted, the gap between the uppermost end of the body 10 and the window sheet 21 also serves as a certain redundant space, and the impact on the body 10 will not be directly transmitted to the window sheet 21, thereby protecting the window sheet 21 from being damaged.
[0043] Further, when the positioning step 12 is in contact with the Dewar window seat 22, the exhaust pipe 23 of the Dewar 20 is located at the uppermost end of the positioning groove 11, the exhaust pipe 23 cooperates with the positioning groove 11, and the positioning step 12 cooperates with the Dewar window seat 22, which can further improve the stability of the installation of the body 10.
[0044] Optionally, as shown in Figure 3 , Figure 4 , the positioning groove 11 comprises a longitudinal groove 111, which is vertically arranged or inclinedly arranged, and the shape of the longitudinal groove 111 is a linear groove or a curved groove. The longitudinal groove 111 can be arranged along the central axis of the body 10, or it can be inclinedly arranged in the longitudinal space. In summary, the longitudinal groove 111 is arranged in the longitudinal space, and the purpose is that after the body 10 is installed on the Dewar 20, the positioning step 12 cooperates with the Dewar window seat 22, and the exhaust pipe 23 is just located at the top end of the longitudinal groove 111. Since the longitudinal groove 111 is vertically arranged, when the body 10 is installed, the body 10 is directly buckled on the Dewar 20, and the exhaust pipe 23 can be directly slid to the top end of the longitudinal groove 111, which is convenient for installation.
[0045] Optionally, as shown in Figure 1 , Figure 4 , Figure 5 , the positioning groove 11 comprises a longitudinal groove 111 and a transverse groove 112 which are sequentially connected, and the number of longitudinal grooves 111 is at least one, and the number of transverse grooves 112 is at least one. Specifically, the positioning groove 11 can be a polyline, the positioning groove 11 is opened from the longitudinal groove 111, and then a transverse groove 112 is connected, and a longitudinal groove 111 can be further connected after the transverse groove 112, or a plurality of longitudinal grooves 111 and a plurality of transverse grooves 112 are sequentially connected. The purpose is to increase the turning path of the exhaust pipe 23, so as to prevent the body 10 from shaking and causing the exhaust pipe 23 to easily fall off from the positioning groove 11.
[0046] In this embodiment, preferably, as shown in Figure 1 , Figure 4As shown, the number of longitudinal grooves 111 and transverse grooves 112 is one, during the process of installing the body 10 on the dewar 20, the exhaust pipe 23 first reaches the upper end of the longitudinal groove 111, then rotates the body 10, so that the exhaust pipe 23 moves in the transverse groove 112, and the exhaust pipe 23 is finally clamped in the transverse groove 112, even the exhaust pipe 23 is positioned to the end of the transverse groove 112, preventing the exhaust pipe 23 from directly sliding into the longitudinal groove 111 when the body 10 shakes, reducing the possibility of longitudinal shaking of the body 10.
[0047] Another preferred embodiment in the present embodiment is that Figure 5 As shown, the number of longitudinal grooves 111 is two, and the number of transverse grooves 112 is one, during the process of installing the body 10 on the dewar 20, the exhaust pipe 23 first reaches the upper end of the first longitudinal groove 111, then rotates the body 10, so that the exhaust pipe 23 moves to the end in the transverse groove 112, and finally falls into the upper end of the second longitudinal groove 111, realizing the locking of the exhaust pipe 23, and making the cooperation between the exhaust pipe 23 and the body 10 more stable.
[0048] Also, as shown in the figure, Figure 4 The transverse groove 112 is horizontally arranged or upwardly inclined.
[0049] When the transverse groove 112 is horizontally arranged, the positioning step 12 is in contact with the dewar window seat 22 when the exhaust pipe 23 is located in the transverse groove 112;
[0050] When the transverse groove 112 is inclined, if the transverse groove 112 is the last section of the positioning groove 11, the positioning step 12 is in contact with the dewar window seat 22, and the exhaust pipe 23 is located at the end of the transverse groove 112, even if the body 10 shakes up and down, due to the gravity of the body 10, the exhaust pipe 23 will always be located at the end of the transverse groove 112.
[0051] Preferably, as shown in the figure, Figures 1-6 The opening end of the body 10 is provided with a positioning part 13 at the position of the positioning groove 11, which is outwardly bent, and is used to provide a fulcrum for the cold sealing clamp 30. First, the positioning part 13 must be at least two ends beyond the two ends of the positioning groove 11 in the horizontal direction, and the positioning part 13 is provided with a notch 14 at the position of the longitudinal groove 111, which is in communication with the longitudinal groove 111. During the installation of the body 10, the exhaust pipe 23 enters the positioning groove 11 through the notch 14, and when the body 10 is completely matched with the dewar 20, the cold sealing operation is carried out, as shown in the figure, Figure 7As shown, first, the blade of the cold sealing clamp 30 is placed perpendicular to the exhaust pipe 23, with the top B of the cold sealing clamp 30 pressed against point b on the body 10, ensuring the exhaust pipe 23 has a consistent length. The front end A of the blade of the cold sealing clamp 30 is placed against point a on the body 10, ensuring the exhaust pipe 23 is completely within the blade of the cold sealing clamp 30. Next, keeping the blade of the cold sealing clamp 30 stationary, another operator holds the Dewar 20 and presses the hydraulic switch. The engagement of the blade separates the exhaust pipe 23 and achieves a seal. The positioning part 13 provides a positioning position for the cold sealing clamp 30, fixing the sealing position of the cold sealing clamp 30 on the exhaust pipe 23. This ensures the stability and accuracy of the cold sealing clamp 30 during operation, effectively avoiding poor sealing or damage to the Dewar 20 due to positional deviation, and improving the consistency of product quality.
[0052] To facilitate the placement of the main body 10, the positioning part 13 is arranged around the circumference of the main body 10, and the positioning part 13 covers at least 60% of the circumferential range of the main body 10. When the main body 10 is placed, more than 60% of the area of the main body 10 is in contact with the platform, making the placement of the main body 10 more stable.
[0053] Preferably, the positioning part 13 covers the entire lower end of the body 10, i.e. the open end.
[0054] Options are available, such as Figure 6 As shown, at least two support parts 15 are fixedly provided at the open end of the main body 10. The support parts 15 are at the same height as the positioning parts 13. The support parts 15 and the positioning parts 13 are evenly distributed at the open end of the main body 10. When the main body 10 is placed on the platform, the main body 10 is supported by the support parts 15 and the positioning parts 13, thereby reducing the use of materials.
[0055] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
Claims
1. A device for assisting in the cold sealing of a dewar, the device comprising: The utility model relates to a cover for dewar flask, comprising: a body, the inside of the body is a cavity, one end of the body has an opening communicating with the cavity, for covering the dewar flask through the body; a positioning groove is arranged on the sidewall of the body, the positioning groove extends upward from the opening of the body, for moving the exhaust pipe of the dewar flask in the positioning groove.
2. The dewar cold seal assist of claim 1, wherein, The body is provided with a positioning step on the side, when the body is installed on the dewar flask, the positioning step is in contact with the window seat of the dewar flask.
3. The dewar cold seal assist of claim 2, wherein, The distance between the uppermost end of the window seat of the dewar flask and the uppermost end of the body is M, the distance between the uppermost end of the window seat of the dewar flask and the window sheet of the dewar flask is N, and M is greater than N.
4. The dewar cold seal assist of claim 2, wherein, When the positioning step is in contact with the window seat of the dewar flask, the exhaust pipe of the dewar flask is located at the uppermost end of the positioning groove.
5. The dewar cold seal assist of claim 1, wherein, The positioning groove comprises a longitudinal groove, which is vertically arranged or obliquely arranged.
6. The dewar cold seal assist of claim 1, wherein, The positioning groove comprises a longitudinal groove and a transverse groove which are sequentially communicated, the number of the longitudinal groove is at least one, and the number of the transverse groove is at least one.
7. The dewar cold seal assist device of claim 6, wherein, The transverse groove is horizontally arranged or obliquely arranged upward.
8. A dewar cold seal assist device according to claim 5 or 6, characterised in that, The opening end of the body is provided with a positioning part corresponding to the positioning groove, the positioning part is outwardly bent, the positioning part must be at least beyond both ends of the positioning groove, the positioning part is provided with a notch corresponding to the longitudinal groove, and the notch is communicated with the longitudinal groove.
9. The dewar cold seal assist device of claim 8, wherein, The positioning part is circumferentially arranged on the body, and the positioning part covers at least 60% of the circumferential range of the body.
10. The dewar cold seal assist device of claim 8, wherein, The opening end of the body is further fixedly provided with at least two supporting parts, the height of the supporting part is same with that of the positioning part, and the supporting part and the positioning part are uniformly distributed on the opening end of the body.