A glue-filling tool for a sensing probe

Abstract

The utility model relates to a kind of glue filling tool of sensing probe, including tool seat, the positioning hole groove for upside-down probe shell is opened in matrix on the tool seat, the upper side of the tool seat is provided with lead holding pole, the lead holding pole is correspondingly opened with T type through slot in probe shell longitudinal direction, the tail end of the longitudinal portion of T type through slot is opened to outside, and lead exit is formed, the transverse portion of T type through slot forms the lead clamping port of each pipe regulation one lead;When this kind of glue filling tool is filled with epoxy resin to probe shell, the two leads of thermistor are positioned and supported using T type through slot, prevent two leads swing, ensure that two leads and probe shell are fixed in center.

Description

Technical Field

[0001] This utility model relates to the field of production tooling, specifically a glue-pouring tooling for a sensor probe. Background Technology

[0002] Current sensor manufacturing, such as temperature probes, requires a tooling fixture. This fixture mainly includes a fixture base and a tooling base with multiple positioning slots 1 arranged in a matrix for inverting the probe housing 3. A lead wire support rod 2 is located on the upper side of the fixture base. The lead wire support rod 2 has a longitudinal through-slot 4 corresponding to the probe housing 3. During resin injection, the two leads 5 of the thermistor are directly inserted into the through-slot. For example... Figure 1 As shown, the control leads are designed to prevent them from swaying downwards. However, the depth at which the leads are inserted into the slots is inconsistent, causing misalignment between the leads and the probe housing. Therefore, further improvements are needed to the tooling used in the production of temperature sensing probes. Utility Model Content

[0003] The purpose of this invention is to solve the above-mentioned existing problems and provide a simple and reasonable potting fixture for a sensor probe.

[0004] A potting fixture for a sensor probe includes a fixture base with a matrix of positioning slots for inverting the probe housing. A lead wire support rod is provided on the upper side of the fixture base. The lead wire support rod has a T-shaped through groove longitudinally corresponding to the probe housing. The tail end of the longitudinal portion of the T-shaped through groove is open to the outside and forms a lead wire inlet and outlet. The transverse portion of the T-shaped through groove forms a lead wire clamping port for each lead wire.

[0005] The objective of this utility model can also be achieved by the following technical measures: As a more specific embodiment, the longitudinal portion of the T-shaped through groove is arranged along the longitudinal symmetry line of the positioning hole groove, and the transverse portion of the T-shaped through groove is arranged along the transverse symmetry line of the positioning hole groove.

[0006] As a further solution, inclined or arc-shaped lead-in surfaces are provided on the left and right sides of the lead-in / outlet.

[0007] As a further embodiment, the width of the longitudinal portion of the T-shaped through groove decreases linearly from the lead wire inlet / outlet towards the transverse portion of the T-shaped through groove.

[0008] As a further embodiment, the lateral portion of the T-shaped through slot is positioned within the vertical projection range of the opening in the probe housing.

[0009] As a further option, the lead clamping port and the lead wire are configured for a clearance fit or an interference fit.

[0010] As a further embodiment, it also includes a base plate made of high-temperature resistant material and two supporting side plates. The tooling seat is placed on the base plate, and the two supporting side plates are respectively fixedly connected to the opposite side of the base plate. The supporting side plates are provided with multiple positioning slots with open tops. The end of the lead wire support rod is locked in the positioning slot, and the lead wire support rod is suspended above the tooling seat.

[0011] As a further embodiment, the end of the lead wire support rod is provided with a half-cut, through which a support rod head adapted to the positioning bayonet and a stop surface located on one side of the support rod head are formed, and the stop surface is limited and matched with the inner wall surface of the support side plate.

[0012] As a further solution, it also includes a base frame composed of several stainless steel pipes connected longitudinally and transversely. The tooling seat is placed on the base frame. The two ends of the transverse stainless steel pipes are bent upwards and then bent again to form U-shaped limiting frames. Support pipes are connected between multiple U-shaped limiting frames. The support pipes and two adjacent U-shaped limiting frames define a positioning slot with an open top. The end of the lead wire support rod is locked in the positioning slot.

[0013] The beneficial effects of this utility model are as follows: This utility model discloses a potting fixture for a sensor probe. When potting epoxy resin into the probe housing, this potting fixture uses a T-shaped through groove to support and position the two leads of the thermistor, preventing the two leads from swaying back and forth and ensuring that the two leads and the probe housing are aligned and fixed. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the background technology structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the structure of the first embodiment of the present invention.

[0016] Figure 3 This is a schematic diagram of the T-shaped through-slot structure in this utility model.

[0017] Figure 4 This is a schematic diagram of the T-shaped through groove and lead wire mating structure in this utility model.

[0018] Figure 5 This is a schematic diagram of the second embodiment of the present invention. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] First embodiment: See Figures 2 to 4As shown, a potting fixture for a sensor probe includes a fixture base 1. The fixture base 1 has a matrix of positioning slots 101 for inverting the probe housing A. A lead wire support rod 2 is provided on the upper side of the fixture base 1. The lead wire support rod 2 has a T-shaped through groove 3 longitudinally corresponding to the probe housing A. The tail end of the longitudinal part 3a of the T-shaped through groove 3 is open to the outside and forms an inlet / outlet 301 for the lead wire A1. The transverse part 3b of the T-shaped through groove 3 forms a lead wire A1 clamping port 302 for each lead wire A1.

[0021] When this potting fixture is used to pot epoxy resin into the probe housing A, the T-shaped through groove 3 supports and positions the two leads A1 of the thermistor, preventing the two leads A1 from swaying back and forth and ensuring that the two leads A1 and the probe housing A are aligned and fixed.

[0022] The longitudinal portion 3a of the T-shaped through groove 3 is arranged along the longitudinal symmetry line Y of the positioning hole groove 101, and the transverse portion 3b of the T-shaped through groove 3 is arranged along the transverse symmetry line X of the positioning hole groove 101; this structure ensures that the clamping opening 302 of the two leads A1 is set in the middle position of the positioning hole groove 101 in the longitudinal direction, and even if the two leads A1 swing left and right, they can only swing towards the center position of the positioning hole groove 101.

[0023] The left and right sides of the inlet and outlet 301 of the lead wire A1 are provided with inclined or arc-shaped lead wire A1 guide surfaces 303; this structure helps workers to insert the two lead wires A1 into the T-shaped through groove 3.

[0024] The width of the longitudinal portion 3a of the T-shaped through groove 3 decreases linearly from the inlet / outlet 301 of the lead wire A1 towards the transverse portion 3b of the T-shaped through groove 3. In this embodiment, the narrowest position of the longitudinal portion 3a of the T-shaped through groove 3 is smaller than the diameter of the lead wire A1. Even if the lead wire A1 swings left and right to the position of the longitudinal portion 3a, it can prevent the lead wire A1 from entering the longitudinal portion 3a of the T-shaped through groove 3, thus avoiding misalignment between the lead wire A1 and the probe housing A.

[0025] The transverse portion 3b of the T-shaped through groove 3 is located within the vertical projection range of the opening A2 of the probe housing A; this structure prevents the transverse portion 3b of the T-shaped through groove 3 from being too wide, so that the swing range of the lead wire A1 can only be at the center position of the probe housing A, and avoids the swing of the lead wire A1 being too far outward.

[0026] The clamping port 302 of the lead wire A1 forms a clearance fit or an interference fit with the lead wire A1; the T-shaped through groove 3 has a certain depth, which provides better support for the lead wire A1 and keeps the lead wire A1 in a vertical state during the glue pouring process. In this embodiment, the depth of the T-shaped through groove 3 is approximately 100mm.

[0027] It also includes a base plate 4 and two supporting side plates 5 made of high-temperature resistant material, mainly bakelite. The tooling base 1 is placed on the base plate 4. The two supporting side plates 5 are respectively fixedly connected to the opposite side of the base plate 4. The supporting side plates 5 are provided with multiple top-open positioning slots 501. The end of the lead wire support rod 2 is inserted into the positioning slot 501, and the lead wire support rod 2 is suspended above the tooling base 1. In a specific embodiment, the tooling base 1 is provided with a matrix of positioning holes and slots 101 for inverting the probe housing A. Therefore, a lead wire support rod 2 is arranged on each row of positioning holes and slots 101. The positioning bayonet 501 can make each lead wire support rod 2 maintain the same spacing, which facilitates the installation or removal of the lead wire support rod 2.

[0028] The end of the lead wire support rod 2 is provided with a half-cut, through which a support rod head 21 adapted to the positioning bayonet 501 is formed and a stop surface 22 located on one side of the support rod head 21 is formed. The stop surface 22 is limited to fit with the inner wall surface of the support side plate 5. The fit between the stop surface 22 and the support side plate 5 can restrict the lead wire support rod 2 from sliding left and right and shifting within the positioning opening A2, so as to better maintain the alignment and fit between the lead wire A1 and the probe housing A.

[0029] Second embodiment: The second embodiment differs from the first embodiment in that: see... Figure 5 As shown, it also includes a base frame 6 composed of several stainless steel pipes connected longitudinally and transversely. The tooling seat 1 is placed on the base frame 6. The two ends of the transverse stainless steel pipe 61 are bent upwards and then bent again to form a U-shaped limiting frame 62. Support pipes 63 are connected between multiple U-shaped limiting frames 62. The support pipe 63 and the two adjacent U-shaped limiting frames 62 define a positioning slot 501 with an open top. The end of the lead wire support rod 2 is locked in the positioning slot 501. Compared to the bakelite structure of the first embodiment, the bakelite structure is not durable when the resin potting fixture is placed in the oven to bake and set the resin. Therefore, this embodiment uses stainless steel, mainly because the stainless steel structure is more robust and resistant to high temperatures.

[0030] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A potting fixture for a sensor probe, comprising a fixture base, wherein the fixture base is provided with a matrix of positioning slots for inverting the probe housing, characterized in that: The upper side of the tooling base is provided with a lead wire support rod. The lead wire support rod is provided with a T-shaped through groove in the longitudinal direction of the probe housing. The tail end of the longitudinal part of the T-shaped through groove is open to the outside and forms a lead wire inlet and outlet. The transverse part of the T-shaped through groove forms a lead wire clamping port for each control of a lead wire.

2. The glue filling tool for a sensor probe according to claim 1, characterized in that: The longitudinal portion of the T-shaped through groove is arranged along the longitudinal symmetry line of the positioning hole groove, and the transverse portion of the T-shaped through groove is arranged along the transverse symmetry line of the positioning hole groove.

3. The glue filling tool for a sensor probe according to claim 1, wherein: The left and right sides of the lead wire inlet and outlet are provided with inclined or arc-shaped lead wire guide surfaces.

4. The glue filling tool for a sensor probe according to claim 1, wherein: The width of the longitudinal portion of the T-shaped through groove decreases linearly from the lead wire inlet / outlet towards the transverse portion of the T-shaped through groove.

5. The glue filling tool for a sensor probe according to claim 1, wherein: The lateral portion of the T-shaped through slot is located within the vertical projection range of the opening in the probe housing.

6. The glue filling tool for a sensor probe according to claim 1, wherein: The lead wire clamping port and the lead wire form a clearance fit or an interference fit.

7. The glue filling tool for a sensor probe according to claim 1, wherein: It also includes a base plate made of high temperature resistant material and two supporting side plates. The tooling seat is placed on the base plate, and the two supporting side plates are respectively fixedly connected to the opposite side of the base plate. The supporting side plates are provided with multiple positioning slots with open tops. The end of the lead wire support rod is locked in the positioning slot, and the lead wire support rod is suspended above the tooling seat.

8. The glue filling tool for a sensor probe according to claim 7, characterized in that: The end of the lead wire support rod is provided with a half-cut, which forms a support rod head that is adapted to the positioning bayonet and a stop surface located on one side of the support rod head. The stop surface is limited and matched with the inner wall surface of the support side plate.

9. The glue filling tool for a sensor probe according to claim 1, wherein: It also includes a base frame composed of several stainless steel pipes connected longitudinally and transversely. The tooling seat is placed on the base frame. The two ends of the transverse stainless steel pipes are bent upwards and then bent again to form U-shaped limiting frames. Support pipes are connected between multiple U-shaped limiting frames. The support pipes and two adjacent U-shaped limiting frames define a positioning slot with an open top. The end of the lead wire support rod is locked in the positioning slot.

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