Platinum-rhodium wire threading equipment for assembling thermocouple fittings
By designing a platinum-rhodium wire threading equipment for thermocouple assembly, and using alternating clamping mechanisms and positioning tubes to achieve automatic threading of platinum-rhodium wires, the problem of low threading efficiency of platinum-rhodium wires in the prior art is solved, and threading efficiency and accuracy are improved.
Patent Information
- Application Number
- CN202421635392.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-11
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2034-07-11
AI Technical Summary
In the prior art, the threading efficiency of thermocouple platinum-rhodium wire is low, mainly relying on manual operation, resulting in low efficiency.
A platinum-rhodium wire threading device for assembly of thermocouple accessories is designed, including a U-shaped quartz tube and a defined clamping mechanism. The platinum-rhodium wire is alternately clamped through two defining mechanisms, so that one end of it extends into the U-shaped quartz tube and the other end extends out, and abuts the U-shaped quartz tube through the positioning tube to ensure that the platinum-rhodium wire is accurately threaded.
The equipment realizes automatic threading of platinum and rhodium wire through the cooperation of the alternating clamping mechanism and the positioning tube, improves threading efficiency and accuracy, and reduces the need for manual operation.
Smart Images
Figure CN222767682U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of thermocouple processing, in particular to a platinum-rhodium wire threading device for assembling thermocouple accessories. Background Art
[0002] Thermocouple is a commonly used temperature measuring element in temperature measuring instruments. It directly measures temperature and converts temperature signals into thermoelectric potential signals, which are then converted into the temperature of the measured medium through electrical instruments (secondary instruments). Thermocouple wires are made of metal wires or alloy wires to form two thermocouple electrodes. Thermocouple wires are welded by two wires, and different thermocouples require thermocouple wires of different thicknesses. There are many thermocouple wire welding devices in the prior art. During welding, two thermocouple wires are pulled to the welding position and welded with a welding gun. Some welding methods are to thread the welded thermocouple wires into a quartz tube, which is U-shaped. In addition, the platinum-rhodium wire is too soft and too thin, with a diameter of only 0.035 mm, making the threading process very complicated. At present, the threading of platinum-rhodium wires for thermocouples is usually done manually. However, due to the thinness of the platinum-rhodium wire, the threading efficiency of the platinum-rhodium wire is greatly reduced. For this reason, we propose a platinum-rhodium wire threading device for assembling thermocouple accessories. Utility Model Content
[0003] The utility model provides a platinum-rhodium wire threading device for assembling thermocouple accessories, which solves the problems raised by the above-mentioned background technology.
[0004] To achieve the above objectives, the utility model is implemented through the following technical solutions: a platinum-rhodium wire threading device for assembling thermocouple accessories, comprising a U-shaped quartz tube and a clamping mechanism for limiting the U-shaped quartz tube, one side of the clamping mechanism is fixedly connected to a connecting plate, and a second electric push rod is fixedly connected to the connecting plate, one end of the second electric push rod is fixedly connected to a threading base for threading the platinum-rhodium wire, the threading base is provided with through holes opposite to the two ends of the U-shaped quartz tube, and a limiting mechanism for alternately clamping the platinum-rhodium wire is arranged in the threading base, and one end of the threading base is movably connected to a positioning tube opposite to the two ends of the U-shaped quartz tube, and a spring is connected between the positioning tube and the threading base.
[0005] Optionally, the clamping structure includes a first positioning seat, a limiting column, a first electric push rod, a top plate, and a second positioning seat, wherein the top of the second positioning seat is fixedly connected to the limiting column, and the limiting column is movably connected to the first positioning seat.
[0006] Optionally, the top end of the limiting column is fixedly connected to a top plate, the bottom end of the top plate is fixedly connected to a first electric push rod, and the bottom end of the first electric push rod is fixed to the top of the first positioning seat.
[0007] Optionally, the spring is sleeved on the positioning tube, and one end of the spring is fixed to the positioning tube, and the other end of the spring is fixed to the threading base.
[0008] Optionally, the limiting mechanism includes a rotating sleeve, a transmission sleeve, and a clamping ring sleeve, the threading base is movably sleeved with a rotating sleeve, the outer side of the transmission sleeve is movably connected to the rotating sleeve, and the inner side of the transmission sleeve is threadedly sleeved with the threading base, the inner side of one end of the transmission sleeve has an inclined surface, and the inclined surface can contact the clamping ring sleeve to push the clamping ring sleeve inward to clamp the platinum-rhodium wire.
[0009] Optionally, the clamping ring is elastic, and there is a gap between the clamping ends of the clamping ring, while the other end of the clamping ring is fixed to the threading base.
[0010] Optionally, a transmission toothed belt is engaged on the outer side of the rotating sleeve, one of the rotating sleeves is engaged with a gear, the gear is connected to the threading base through a rotating shaft, and a motor is fixedly connected inside the threading base, and the output shaft of the motor is connected to the gear.
[0011] The utility model has the following beneficial effects:
[0012] 1. The platinum-rhodium wire threading device for assembling thermocouple accessories clamps the platinum-rhodium wire alternately through two limiting mechanisms, so that when one end of the platinum-rhodium wire extends into the U-shaped quartz tube and extends from the other end of the U-shaped quartz tube, the clamping of the platinum-rhodium wire by the two limiting mechanisms can be switched, and then the platinum-rhodium wire threading can be completed in one reciprocating stroke, thereby making the platinum-rhodium wire threading more convenient.
[0013] 2. The platinum-rhodium wire threading equipment for assembling thermocouple accessories has a positioning tube that abuts against the U-shaped quartz tube, so that the platinum-rhodium wire can be accurately aligned with the U-shaped quartz tube for threading, and the relative movement between the threading base and the positioning tube makes the positioning tube still relative to the U-shaped quartz tube during the threading process of the platinum-rhodium wire, thereby effectively ensuring the smooth threading of the platinum-rhodium wire. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the structure of the utility model;
[0015] Figure 2 This is a structural diagram of the connection of the threading base of the utility model;
[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the connection of the threading base of the utility model;
[0017] Figure 4 This is a schematic diagram of the structure of the rotary sleeve connection of the utility model;
[0018] Figure 5 It is a schematic diagram of the structure of point A of the utility model.
[0019] In the figure: 1. U-shaped quartz tube; 2. first positioning seat; 3. limiting column; 4. first electric push rod; 5. top plate; 6. threading base; 7. positioning tube; 8. connecting plate; 9. second electric push rod; 10. second positioning seat; 11. spring; 12. motor; 13. gear; 14. rotating sleeve; 15. transmission belt; 16. transmission sleeve; 17. clamping ring. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] See also Figures 1 to 5 , a platinum-rhodium wire threading device for assembling thermocouple accessories, comprising a U-shaped quartz tube 1 and a clamping mechanism for limiting the U-shaped quartz tube 1, the clamping mechanism can clamp the U-shaped quartz tube 1, so that the U-shaped quartz tube 1 can be threaded stably, one side of the clamping mechanism is fixedly connected to a connecting plate 8, and a second electric push rod 9 is fixedly connected to the connecting plate 8, one end of the second electric push rod 9 is fixedly connected to a threading base 6 for threading the platinum-rhodium wire, driven by the second electric push rod 9, the threading base 6 can be moved, so that the two limiting mechanisms on the threading base 6 can complete the wire feeding and wire drawing process of the platinum-rhodium wire, thereby completing the threading of the platinum-rhodium wire, the threading base 6 is provided with a U The two ends of the U-shaped quartz tube 1 are opposite to each other, and the platinum-rhodium wire passes through one through hole into the U-shaped quartz tube 1 and passes out from the other through hole, and a limiting mechanism for alternately clamping the platinum-rhodium wire is provided in the threading base 6, thereby realizing the wire feeding and wire drawing process of the platinum-rhodium wire, and one end of the threading base 6 is movably connected with a positioning tube 7 opposite to the two ends of the U-shaped quartz tube 1, and the threading base 6 and the positioning tube 7 can move relative to each other, so that the platinum-rhodium wire can accurately enter the U-shaped quartz tube 1 through the positioning tube 7, and a spring 11 is connected between the positioning tube 7 and the threading base 6, and under the action of the elastic force of the spring 11, the positioning tube 7 and the threading base 6 can automatically return to their original positions, thereby facilitating the next threading.
[0022] See also Figures 1 to 3The clamping structure includes a first positioning seat 2, a limiting column 3, a first electric push rod 4, a top plate 5, and a second positioning seat 10. The top of the second positioning seat 10 is fixedly connected with the limiting column 3. The limiting column 3 is movably connected to the first positioning seat 2. The first positioning seat 2 can move along a fixed trajectory along the limiting column 3. Through the limitation between the first positioning seat 2 and the second positioning seat 10, the U-shaped quartz tube 1 can be threaded stably.
[0023] See also Figures 1 to 3 The top end of the limiting column 3 is fixedly connected to a top plate 5, and the bottom end of the top plate 5 is fixedly connected to a first electric push rod 4. The bottom end of the first electric push rod 4 is fixed to the top of the first positioning seat 2. Under the push of the first electric push rod 4, the first positioning seat 2 can be smoothly lifted and lowered, thereby facilitating the taking and placing of the U-shaped quartz tube 1.
[0024] See also Figures 1 to 3 The spring 11 is sleeved on the positioning tube 7 , and one end of the spring 11 is fixed to the positioning tube 7 , and the other end of the spring 11 is fixed to the threading base 6 .
[0025] See also Figures 1 to 5 The limiting mechanism includes a rotating sleeve 14, a transmission sleeve 16, and a clamping ring sleeve 17. The threading base 6 is movably sleeved with a rotating sleeve 14, and the rotating sleeve 14 can be rotated at a fixed position on the threading base 6. The outer side of the transmission sleeve 16 is movably connected with the rotating sleeve 14. Driven by the rotation of the rotating sleeve 14, the transmission sleeve 16 can rotate, and the rotating sleeve 14 and the transmission sleeve 16 can move relative to each other, and the inner side of the transmission sleeve 16 is threadedly sleeved with the threading base 6, so that when the transmission sleeve 16 rotates, it can move relative to the rotating sleeve 14. The inner side of one end of the transmission sleeve 16 has an inclined surface, and its inclined surface can contact the clamping ring sleeve 17 to push the clamping ring sleeve 17 inward to clamp the platinum-rhodium wire, so that it can clamp the platinum-rhodium wire, pull the platinum-rhodium wire or push the platinum-rhodium wire.
[0026] See also Figures 1 to 5 The clamping ring 17 has elasticity, so that the clamping ring 17 can be loosened smoothly, ensuring the smooth threading of the platinum-rhodium wire, and there is a gap between the clamping ends of the clamping ring 17. At the same time, the other end of the clamping ring 17 is fixed to the threading base 6, so that the clamping ring 17 has a relative deformation space, so that the clamping ring 17 can be clamped smoothly.
[0027] See also Figures 1 to 5A transmission toothed belt 15 is engaged with the outer side of the rotating sleeve 14. Under the transmission of the transmission toothed belt 15, the rotating sleeve 14 can rotate together. The threads connected to the two transmission sleeves 16 are in opposite states, so that the transmission sleeves 16 can move relatively. One of the rotating sleeves 14 is engaged with a gear 13. Driven by the gear 13, the rotating sleeve 14 can rotate. The gear 13 is connected to the threading base 6 through a rotating shaft, and a motor 12 is fixedly connected to the threading base 6. The output shaft of the motor 12 is connected to the gear 13. Driven by the output shaft of the motor 12, the gear 13 can rotate. The motor 12 is a prior art and will not be described here.
[0028] In summary, when the platinum-rhodium wire threading device for assembling thermocouple accessories is used, the U-shaped quartz tube 1 is placed on the second positioning seat 10, and then, under the push of the first electric push rod 4, the first positioning seat 2 can be moved downward, thereby limiting the U-shaped quartz tube 1, and the through hole at one end of the platinum-rhodium wire threading base 6 is inserted, and the platinum-rhodium wire is continuously unwound, and the platinum-rhodium wire is inserted into the positioning tube 7, and then, driven by the output shaft of the motor 12, the gear 13 can be rotated, and then the rotating sleeve 14 is rotated, and under the drive of the transmission toothed belt 15, the other rotating sleeve 14 can be rotated, and under the drive of the rotating sleeve 14, the transmission sleeve 16 can move relative to the rotating sleeve 14, one of the transmission sleeves 16 gradually pushes the clamping ring sleeve 17 to deform and clamp the platinum-rhodium wire, and the other transmission sleeve 16 moves in the opposite direction, and its clamping ring sleeve 17 can move under the action of its own elastic force. The through hole is opened, and the threading base 6 can be moved under the push of the second electric push rod 9, and the clamped platinum-rhodium wire is then transported into the U-shaped quartz tube 1, and the threading base 6 can push the positioning tube 7 to move, and one end of the two positioning tubes 7 are respectively abutted against the two ends of the U-shaped quartz tube 1, and then the threading base 6 and the positioning tube 7 move relative to each other, so that the platinum-rhodium wire can penetrate into the U-shaped quartz tube 1 and pass out from the other end of the U-shaped quartz tube 1, and the platinum-rhodium wire extends into another through hole. At this time, the motor 12 drives the gear 13 to rotate in the reverse direction, so that the clamping ring 17 that originally clamped the platinum-rhodium wire is loosened, and the other clamping ring 17 clamps the platinum-rhodium wire, and then under the retraction of the second electric push rod 9, the platinum-rhodium wire can be pulled, thereby completing the threading of the platinum-rhodium wire, and after the threading is completed, the continuous platinum-rhodium wire can be cut off, so that the platinum-rhodium wire can be threaded continuously.
[0029] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, 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 integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus.
[0030] 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 platinum-rhodium wire threading device for assembling thermocouple accessories, comprising a U-shaped quartz tube (1) and a clamping mechanism for limiting the U-shaped quartz tube (1), characterized in that: A connecting plate (8) is fixedly connected to one side of the clamping mechanism, and a second electric push rod (9) is fixedly connected to the connecting plate (8), one end of the second electric push rod (9) is fixedly connected to a threading base (6) for threading a platinum-rhodium wire, the threading base (6) is provided with through holes opposite to the two ends of the U-shaped quartz tube (1), and a limiting mechanism for alternately clamping the platinum-rhodium wire is arranged in the threading base (6), and one end of the threading base (6) is movably connected to a positioning tube (7) opposite to the two ends of the U-shaped quartz tube (1), and a spring (11) is connected between the positioning tube (7) and the threading base (6).
2. The platinum-rhodium wire threading device for assembling thermocouple accessories according to claim 1, characterized in that: The clamping mechanism comprises a first positioning seat (2), a limiting column (3), a first electric push rod (4), a top plate (5), and a second positioning seat (10); the top of the second positioning seat (10) is fixedly connected to the limiting column (3), and the limiting column (3) is movably connected to the first positioning seat (2).
3. The platinum-rhodium wire threading device for assembling thermocouple accessories according to claim 2, characterized in that: The top end of the limiting column (3) is fixedly connected to a top plate (5), the bottom end of the top plate (5) is fixedly connected to a first electric push rod (4), and the bottom end of the first electric push rod (4) is fixed to the top of the first positioning seat (2).
4. The platinum-rhodium wire threading device for assembling thermocouple accessories according to claim 3, characterized in that: The spring (11) is sleeved on the positioning tube (7), and one end of the spring (11) is fixed to the positioning tube (7), and the other end of the spring (11) is fixed to the threading base (6).
5. The platinum-rhodium wire threading device for assembling thermocouple accessories according to claim 1, characterized in that: The limiting mechanism comprises a rotating sleeve (14), a transmission sleeve (16), and a clamping ring sleeve (17); the rotating sleeve (14) is movably sleeved inside the threading base (6); the outer side of the transmission sleeve (16) is movably connected to the rotating sleeve (14), and the inner side of the transmission sleeve (16) is threadedly sleeved with the threading base (6); the inner side of one end of the transmission sleeve (16) is provided with an inclined surface, and the inclined surface can contact the clamping ring sleeve (17) to push the clamping ring sleeve (17) inward to clamp the platinum-rhodium wire.
6. The platinum-rhodium wire threading device for assembling thermocouple accessories according to claim 5, characterized in that: The clamping ring (17) is elastic, and there is a gap between the clamping ends of the clamping ring (17), while the other end of the clamping ring (17) is fixed to the threading base (6).
7. The platinum-rhodium wire threading device for assembling thermocouple accessories according to claim 6, characterized in that: A transmission toothed belt (15) is engaged with the outer side of the rotating sleeve (14), one of the rotating sleeves (14) is engaged with a gear (13), the gear (13) is connected to the threading base (6) via a rotating shaft, and a motor (12) is fixedly connected inside the threading base (6), and the output shaft of the motor (12) is connected to the gear (13).