Injection molding type assembly test probe and production method thereof

Abstract

The invention discloses an injection molding type assembly test probe and a production method thereof, the injection molding type assembly test probe comprises a tube body, two ends of the tube body are provided with an upper probe body and a lower probe body, one end of the tube body close to the upper probe body is provided with a flange plate, the outer wall of the upper probe body is provided with a limiting ring, and when the upper probe body is sleeved in the tube body, the limiting ring is arranged on the flange plate. A first fastening piece and a second fastening piece which are made of insulation materials are arranged between the pipe body and the upper needle body and between the pipe body and the lower needle body respectively, and the first fastening piece is used for tightly matching the flange plate and the limiting ring in the axial direction of the pipe body. And the second fastener is used for enabling the port of the tube body to be in interference fit with the outer wall of the lower needle body in the radial direction of the tube body. Interference of external noise on high-frequency signals is blocked, excellent isolation performance is achieved, in addition, due to the fact that injection molding is adopted, welding spots cannot be formed on the pipe body, impedance stability in the signal transmission process can be better guaranteed, reflection loss is reduced, and signal integrity is improved.

Description

Technical Field

[0001] The invention relates to the field of test probes, and in particular to an injection-molded assembly test probe and a production method thereof. Background Art

[0002] In the semiconductor field, for RF, radar, high-speed processor CPU, graphics processor GPU, wireless communication modules, etc., high-frequency and high-speed chips need to undergo performance testing after the packaging process, including SLT, ATE or collectively referred to as Final Test. High-frequency and high-speed testing has extremely high requirements for signal integrity and power integrity. The test probe is mainly responsible for testing the connection between the chip and the circuit board. It needs to have low loss, low standing wave, stable transmission signal, etc., to detect the input feedback signals of each module of the chip, whether the functions are normal, electrical performance, power consumption and other performance parameters, to ensure product quality and reliability.

[0003] The existing probe is basically composed of a needle tube and a needle head, which are connected by welding. However, the welding process will leave solder joints on the needle tube, which will reduce the impedance stability during signal transmission, increase reflection loss and reduce signal integrity. In addition, when the probe is installed in the test fixture, the outer wall of the needle tube needs to be completely insulated from the test fixture. The existing technology usually adopts the method of coating insulating material on the needle tube, but after the probe is used for a long time, the insulating material will slowly age, resulting in a weakened insulation effect, affecting the efficiency and stability of signal transmission. Summary of the invention

[0004] In order to solve the above-mentioned problems, the present invention provides an injection molding assembly test probe, including a tube body, an upper needle body and a lower needle body are arranged at both ends of the tube body, the upper needle body and the lower needle body are sleeved in the tube body, a spring is arranged between the upper needle body and the lower needle body, a flange is formed at one end of the tube body close to the upper needle body, and a limiting ring is formed on the outer wall of the upper needle body. When the upper needle body is sleeved in the tube body, the limiting ring abuts against the flange, and a first fastener and a second fastener of insulating material are respectively arranged between the tube body and the upper needle body and the lower needle body, the first fastener is used to tightly fit the flange and the limiting ring along the axial direction of the tube body, and the second fastener is used to interference fit the port of the tube body on the outer wall of the lower needle body along the radial direction of the tube body.

[0005] Furthermore, the first fastener includes a first wrapping ring and a second wrapping ring protruding inward, a first accommodating groove is arranged between the first wrapping ring and the second wrapping ring, and a third wrapping ring is formed between the first accommodating groove and the outer wall. When the first fastener is assembled between the upper needle body and the tube body, the first wrapping ring is tightly fitted on the outer wall of the tube body, the second wrapping ring is tightly fitted on the outer wall of the upper needle body, the flange and the limiting ring are tightly fitted and accommodated in the first accommodating groove, and the third wrapping ring covers the outer wall of the flange and the limiting ring.

[0006] Furthermore, the first wrapping ring, the second wrapping ring and the third wrapping ring are concentrically arranged.

[0007] Furthermore, a first glue feed groove and a second glue feed groove are respectively arranged in the first wrapping ring and the second wrapping ring, the first glue feed groove and the second glue feed groove are respectively perpendicular to the flange and the limiting ring, and glue inlets are arranged at the ends of the first glue feed groove and the second glue feed groove.

[0008] Furthermore, the second fastener includes a fourth wrapping ring and a fifth wrapping ring, the fourth wrapping ring is tightly fitted on the outer wall of the tube body, the fifth wrapping ring is tightly attached between the tube body and the lower needle body, a plurality of positioning rings are protruding inside the fourth wrapping ring, and a positioning groove matching the shape of the positioning ring is provided on the outer wall of the tube body.

[0009] Furthermore, a plurality of third glue feeding grooves are arranged on the fifth wrapping ring. The third glue feeding grooves are arranged along the axial direction of the tube body and one end of the third glue feeding grooves is aligned with the joint between the tube body and the fourth wrapping ring.

[0010] Furthermore, the upper needle body includes an upper needle head, and when the limiting ring abuts against the flange, the upper needle head extends outward from the tube body; the lower needle body includes a lower needle head, and when the second fastener tightly fits the port of the tube body on the outer wall of the lower needle body along the radial direction of the tube body, the lower needle head extends outward from the tube body; a sleeve is provided on the side of the lower needle body away from the lower needle head, and one end of the spring is sleeved on the sleeve.

[0011] The present application also provides a method for producing an injection molding assembly test probe, the steps of which include: Step 1: Forming flanges and a plurality of positioning grooves at both ends of a tube body of a preset length; Step 2: After inserting the inner mold core into the tube body, insert the lower needle body into the end of the tube body close to the positioning groove, then put the tube body into the preset mold, align the glue feeding tube with the glue feeding direction A of the outer wall of the tube body containing the positioning groove to feed the glue, and the glue flows along the outer wall of the tube body to form a fourth wrapping ring, and is embedded in the positioning groove to form a positioning ring. At the same time, the glue also flows along the side of the tube body to the radial direction of the tube body to cover the joint of the tube body and the lower needle body to form a fifth wrapping ring, thereby completing the injection molding of the second fastener; Step 3: insert a spring into the tube body so that one end of the spring is sleeved on the sleeve, and then insert the upper needle body into the end of the tube body close to the flange so that the limiting ring is tightly fitted on the flange; Step 4: Put the tube body into the preset mold again, and align the glue feeding pipe along the outer wall of the tube body, the outer wall of the upper needle body and the axial direction of the tube body with the outer side glue feeding direction B and the glue feeding direction C of the flange and the limiting ring to feed the glue. The colloid flows along the outer wall of the tube body to form a first wrapping ring, and the colloid flows along the outer wall of the upper needle body to form a second wrapping ring. At the same time, the colloid will cover the outer wall of the flange and the limiting ring to form a third wrapping ring, thereby completing the injection molding of the second fastener.

[0012] Compared with the prior art, the present invention has the following beneficial effects: This embodiment uses a first fastener and a second fastener made of insulating material to tightly fit the upper needle body and the lower needle body on the tube body. When the probe is inserted into the test device, the first fastener and the second fastener contact the device instead of the tube body, forming a metal shielding layer to block the interference of external noise on the high-frequency signal and achieve excellent isolation performance; In addition, since the first fastener and the second fastener are formed with the tube body by injection molding, no solder joints are formed on the tube body, thereby better ensuring impedance stability during signal transmission, reducing reflection loss and improving signal integrity; Finally, an air layer is formed around the tube, which further optimizes the efficiency and stability of signal transmission and ensures that the high-frequency characteristics are optimally performed. In summary, this design enables high-frequency test equipment to complete signal testing with minimal loss, highest accuracy and stability during use, and is suitable for high-speed communications and high-frequency testing areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 This is a schematic diagram of the overall structure of the injection-molded assembly test probe of the present invention; Figure 2 It is a structural schematic diagram of the first fastener of the injection molding assembly test probe of the present invention; Figure 3 A cross-sectional view of a first fastener of an injection-molded assembly test probe of the present invention; Figure 4 It is a schematic structural diagram of the second fastener of the injection molding assembly test probe of the present invention; Figure 5 A cross-sectional view of a second fastener of the injection-molded assembly test probe of the present invention; Figure 6 This is a cross-sectional view of the overall structure of the injection-molded assembly test probe of the present invention; Figure 7 This is a schematic diagram of the assembly structure of step 1 of the production method of the injection molding assembly test probe of the present invention; Figure 8 It is a schematic diagram of the assembly structure of step 2 of the production method of the injection molding assembly test probe of the present invention; Fig. 9 It is a schematic diagram of the assembly structure of step three of the production method of the injection molding assembly test probe of the present invention; Fig.10 It is a schematic diagram of the assembly structure of step 4 of the production method of the injection molding assembly test probe of the present invention; The reference numerals and names in the figures are as follows: Tube body 100, upper needle body 200, lower needle body 300, spring 400, flange 110, limit ring 210, first fastener 500, second fastener 600, first wrapping ring 510, second wrapping ring 520, first accommodating groove 530, third wrapping ring 540, first glue feed groove 511, second glue feed groove 521, glue feed port 512, fourth wrapping ring 610, fifth wrapping ring 620, positioning ring 611, positioning groove 120, third glue feed groove 621, upper needle head 220, lower needle head 310, sleeve 320. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] The present invention is described in more detail. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements therebetween.

[0017] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, vertical, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself. In the description of the present invention, it should be noted that the use of words such as "first" and "second" to define components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above words have no special meaning, and therefore cannot be understood as limiting the scope of protection of the present invention. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0018] The preferred embodiments of the present invention are further described in conjunction with the accompanying drawings. Figure 1 As shown, an injection molding assembly test probe comprises a tube body 100, the tube body 100 is in the shape of a hollow cylinder, an upper needle body 200 and a lower needle body 300 are arranged at both ends of the tube body 100, the upper needle body 200 and the lower needle body 300 are sleeved in the tube body 100, a spring 400 is arranged between the upper needle body 200 and the lower needle body 300, a flange 110 is formed at one end of the tube body 100 close to the upper needle body 200, and a limiting ring 210 is formed on the outer wall of the upper needle body 200, When the upper needle body 200 is sleeved in the tube body 100, the limiting ring 210 abuts against the flange 110, and a first fastener 500 and a second fastener 600 made of insulating material are respectively arranged between the tube body 100 and the upper needle body 200 and the lower needle body 300. The first fastener 500 is used to tightly fit the flange 110 and the limiting ring 210 along the axial direction of the tube body 100, and the second fastener 600 is used to tightly fit the port of the tube body 100 on the outer wall of the lower needle body 300 along the radial direction of the tube body 100.

[0019] When assembling this embodiment, the lower needle body 300 is first sleeved in the tube body 100, and then the second fastener 600 is formed between the tube body 100 and the lower needle body 300 by using the injection molding process. The second fastener 600 can deform the port of the tube body 100 in the radial direction of the tube body 100, so that the lower needle body 300 is clamped and fixed to one end of the tube body 100, and then the spring 400 is inserted into the tube body 100 at the other end of the lower needle body 300, and then the upper needle body 200 is sleeved in the tube body 100 so that the limiting ring 210 abuts against the flange 110, thereby closing the two ends of the tube body 100, and finally the first fastener 500 is formed between the tube body 100 and the upper needle body 200 by using the injection molding process. The first fastener 500 can tightly fit the flange 110 and the limiting ring 210 together along the axial direction of the tube body 100, thereby fixing the tube body 100 and the upper needle body 200.

[0020] This embodiment utilizes the first fastener 500 and the second fastener 600 of insulating material to tightly fit the upper needle body 200 and the lower needle body 300 on the tube body 100. When the probe is inserted into the test device, the first fastener 500 and the second fastener 600 contact the device instead of the tube body 100, forming a metal shielding layer to block the interference of external noise on the high-frequency signal and achieve excellent isolation performance. In addition, since the first fastener 500 and the second fastener 600 and the tube body 100 are injection molded, no solder joints are formed on the tube body 100, thereby better ensuring the impedance stability during signal transmission, reducing reflection loss and improving signal integrity. Finally, an air layer is formed around the tube body 100, thereby further optimizing the efficiency and stability of signal transmission and ensuring that the high-frequency characteristics are in the best state. In summary, this design enables high-frequency test equipment to complete signal testing with minimal loss, highest accuracy and stability during use, and is suitable for high-speed communication and high-frequency test requirements.

[0021] On the basis of the above embodiments, Figure 2 , Figure 3 and Figure 6As shown, the first fastener 500 includes a first wrapping ring 510 and a second wrapping ring 520 that are formed to protrude inward, a first accommodating groove 530 is arranged between the first wrapping ring 510 and the second wrapping ring 520, and a third wrapping ring 540 is formed between the first accommodating groove 530 and the outer wall. When the first fastener 500 is assembled between the upper needle body 200 and the tube body 100, the first wrapping ring 510 is tightly fitted on the outer wall of the tube body 100, the second wrapping ring 520 is tightly fitted on the outer wall of the upper needle body 200, the flange 110 and the limiting ring 210 are tightly fitted and accommodated in the first accommodating groove 530, and the third wrapping ring 540 covers the outer walls of the flange 110 and the limiting ring 210, so that the first accommodating groove 530 and the third wrapping ring 540 cooperate with each other to tightly fit the flange 110 and the limiting ring 210 together along the axial direction of the tube body 100.

[0022] On the basis of the above embodiments, Figure 2 , Figure 3 and Figure 6 As shown, the first wrapping ring 510, the second wrapping ring 520 and the third wrapping ring 540 are concentrically arranged, so that when the first fastener 500 is assembled between the upper needle body 200 and the tube body 100, it can be ensured that the upper needle body 200 and the tube body 100 are concentrically arranged, so that this product has extremely high overall concentricity and will not get stuck on the test fixture due to probe deviation during disassembly and assembly.

[0023] On the basis of the above embodiments, Figure 2 , Figure 3 and Figure 6 As shown, a first glue feed groove 511 and a second glue feed groove 521 are respectively provided in the first wrapping ring 510 and the second wrapping ring 520, and the first glue feed groove 511 and the second glue feed groove 521 are respectively perpendicular to the flange 110 and the limiting ring 210, and a glue inlet 512 is provided at the end of the first glue feed groove 511 and the second glue feed groove 521. When the first fastener 500 needs to be injection molded, the colloid is rushed into the mold along the first glue feed groove 511 and the second glue feed groove 521, and impacts the flange 110 and the limiting ring 210 in the vertical direction on both sides, thereby forming an effect of tightly fitting the flange 110 and the limiting ring 210 along the axial direction of the tube body 100.

[0024] On the basis of the above embodiments, Figures 4 to 6As shown, the second fastener 600 includes a fourth wrapping ring 610 and a fifth wrapping ring 620, the fourth wrapping ring 610 is tightly fitted on the outer wall of the tube body 100, and the fifth wrapping ring 620 is tightly attached between the tube body 100 and the lower needle body 300, and a plurality of positioning rings 611 are protrudingly provided in the fourth wrapping ring 610, and a positioning groove 120 matching the shape of the positioning ring 611 is provided on the outer wall of the tube body 100. When the second fastener 600 is injection molded, the positioning ring 611 is molded in the positioning groove 120, thereby ensuring that the second fastener 600 can better contact with the tube body 100.

[0025] On the basis of the above embodiments, Figures 4 to 6 As shown, a plurality of third glue feeding grooves 621 are provided on the fifth wrapping ring 620. The third glue feeding grooves 621 are provided along the axial direction of the tube body 100 and one end thereof is aligned with the joint of the tube body 100 and the fourth wrapping ring 610. When injection molding is required, glue is fed from the third glue feeding grooves 621, thereby forming the fourth wrapping ring 610 and the fifth wrapping ring 620 respectively.

[0026] On the basis of the above embodiments, Figures 4 to 6 As shown, the upper needle body 200 includes an upper needle head 220. When the limiting ring 210 abuts against the flange 110, the upper needle head 220 extends outward from the tube body 100. The lower needle body 300 includes a lower needle head 310. When the second fastener 600 tightly fits the port of the tube body 100 on the outer wall of the lower needle body 300 along the radial direction of the tube body 100, the lower needle head 310 extends outward from the tube body 100. A sleeve 320 is provided on the side of the lower needle body 300 away from the lower needle head 310. One end of the spring 400 is sleeved on the sleeve 320, so that when the spring 400 is compressed, the compression direction of the spring 400 can be guided.

[0027] The present application also discloses a production method for the above-mentioned injection molding assembly test probe, which comprises: Step 1: If Figure 7 As shown, flanges 110 and a plurality of positioning grooves 120 are formed at both ends of a tube body 100 of a preset length; Step 2: If Figure 8As shown, after the inner mold core is inserted into the tube body 100, the lower needle body 300 is inserted into the end of the tube body 100 close to the positioning groove 120, and then the tube body 100 is inserted into the preset mold, and the glue feeding tube (not shown in the figure) is aligned with the glue feeding direction A of the outer wall of the tube body 100 containing the positioning groove 120 to feed glue. The colloid flows along the outer wall of the tube body 100 to form a fourth wrapping ring 610, and is embedded in the positioning groove 120 to form a positioning ring 611. At the same time, the colloid will also flow radially along the side of the tube body 100 to form a fifth wrapping ring 620 covering the joint between the tube body 100 and the lower needle body 300. Since in this process, the colloid will generate pressure along the radial direction of the tube body 100 to the port of the tube body 100, the fifth wrapping ring 620 will cause the port of the tube body 100 to be slightly deformed, so that its port is interference-fitted on the outer wall of the lower needle body 300, thereby completing the injection molding of the second fastener 600.

[0028] Step 3: If Fig. 9 As shown, a spring 400 is inserted into the tube body 100 so that one end of the spring 400 is sleeved on the sleeve 320 , and then the upper needle body 200 is inserted into the end of the tube body 100 close to the flange 110 so that the limiting ring 210 is tightly fitted on the flange 110 .

[0029] Step 4: If Fig.10 As shown, the tube body 100 is then inserted into the preset mold, and the glue feeding pipe (not shown in the figure) is inserted along the outer wall of the tube body 100, the outer wall of the upper needle body 200 and the axial direction of the tube body 100 to align with the outer glue feeding direction B and the glue feeding direction C of the flange 110 and the limiting ring 210. The colloid flows along the outer wall of the tube body 100 to form a first wrapping ring 510, and the colloid flows along the outer wall of the upper needle body 200 to form a second wrapping ring 520. At the same time, the colloid will cover the outer walls of the flange 110 and the limiting ring 210 to form a third wrapping ring 540. Since the colloid forms an impact in the vertical direction on both sides of the flange 110 and the limiting ring 210, the flange 110 and the limiting ring 210 are tightly matched along the axial direction of the tube body 100, thereby completing the injection molding of the second fastener 600.

[0030] The details of the exemplary embodiments described above are not limited to the embodiments described above, and the invention may be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive in all respects, and the scope of the invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the invention.

Claims

1. An injection molded assembly test probe, characterized in that: The invention comprises a tube body (100), an upper needle body (200) and a lower needle body (300) are arranged at both ends of the tube body (100), the upper needle body (200) and the lower needle body (300) are sleeved in the tube body (100), a spring (400) is arranged between the upper needle body (200) and the lower needle body (300), a flange (110) is formed at one end of the tube body (100) close to the upper needle body (200), and a limiting ring (210) is formed on the outer wall of the upper needle body (200). When the upper needle body (200) is sleeved on the tube body (1 00), the limiting ring (210) abuts against the flange (110), and a first fastener (500) and a second fastener (600) made of insulating material are respectively arranged between the tube body (100) and the upper needle body (200) and the lower needle body (300), the first fastener (500) being used to tightly fit the flange (110) and the limiting ring (210) along the axial direction of the tube body (100), and the second fastener (600) being used to interference fit the port of the tube body (100) onto the outer wall of the lower needle body (300) along the radial direction of the tube body (100).

2. The injection molding assembly test probe according to claim 1, characterized in that: The first fastener (500) includes a first wrapping ring (510) and a second wrapping ring (520) which are formed to protrude inward, a first accommodating groove (530) is provided between the first wrapping ring (510) and the second wrapping ring (520), and a third wrapping ring (540) is formed between the first accommodating groove (530) and the outer wall of the first fastener (500). When the first fastener (500) is assembled between the upper needle body (200) and the tube body (100), the first wrapping ring (510) is tightly fitted on the outer wall of the tube body (100), and the second wrapping ring (520) is tightly fitted on the outer wall of the upper needle body (200). The flange (110) and the limiting ring (210) are tightly fitted and accommodated in the first accommodating groove (530), and the third wrapping ring (540) covers the outer walls of the flange (110) and the limiting ring (210).

3. The injection molding assembly test probe according to claim 2, characterized in that: The first wrapping ring (510), the second wrapping ring (520) and the third wrapping ring (540) are concentrically arranged.

4. The injection molding assembly test probe according to claim 3, characterized in that: A first glue feed groove (511) and a second glue feed groove (521) are respectively arranged in the first wrapping ring (510) and the second wrapping ring (520); the first glue feed groove (511) and the second glue feed groove (521) are respectively perpendicular to the flange (110) and the limiting ring (210); and glue feed ports (512) are arranged at the ends of the first glue feed groove (511) and the second glue feed groove (521).

5. The injection molding assembly test probe according to claim 1, characterized in that: The second fastener (600) includes a fourth wrapping ring (610) and a fifth wrapping ring (620), wherein the fourth wrapping ring (610) is tightly fitted on the outer wall of the tube body (100), and the fifth wrapping ring (620) is tightly attached between the tube body (100) and the lower needle body (300), and a plurality of positioning rings (611) are protrudingly provided inside the fourth wrapping ring (610), and a positioning groove (120) matching the shape of the positioning ring (611) is provided on the outer wall of the tube body (100).

6. The injection molding assembly test probe according to claim 5, characterized in that: A plurality of third glue feeding grooves (621) are provided on the fifth wrapping ring (620), and the third glue feeding grooves (621) are arranged along the axial direction of the tube body (100) and one end of the third glue feeding grooves (621) is aligned with the joint between the tube body (100) and the fourth wrapping ring (610).

7. The injection molding assembly test probe according to claim 1, characterized in that: The upper needle body (200) includes an upper needle head (220). When the limiting ring (210) abuts against the flange (110), the upper needle head (220) protrudes outward from the tube body (100). The lower needle body (300) includes a lower needle head (310). When the second fastener (600) tightly fits the port of the tube body (100) onto the outer wall of the lower needle body (300) along the radial direction of the tube body (100), the lower needle head (310) protrudes outward from the tube body (100). A sleeve (320) is provided on a side of the lower needle body (300) away from the lower needle head (310), and one end of the spring (400) is sleeved on the sleeve (320).

8. A method for producing an injection molding assembly test probe, characterized in that: The steps include: Step 1: forming flanges (110) and a plurality of positioning grooves (120) at both ends of a tube body (100) of a preset length; Step 2: After the inner mold core is inserted into the tube body (100), the lower needle body (300) is inserted into the end of the tube body (100) close to the positioning groove (120), and then the tube body (100) is inserted into the preset mold, and the glue feeding tube is aligned with the glue feeding direction A of the end of the tube body (100) close to the positioning groove (120) to feed glue, and the glue flows along the outer wall of the tube body (100) to form a fourth wrapping ring (610), and is embedded in the positioning groove (120) to form a positioning ring (611). At the same time, the glue also flows along the side of the tube body (100) toward the radial direction of the tube body (100) to cover the joint of the tube body (100) and the lower needle body (300) to form a fifth wrapping ring (620), thereby completing the injection molding of the second fastener (600); Step 3: inserting a spring (400) into the tube body (100) so that one end of the spring (400) is sleeved on the sleeve (320), and then inserting the upper needle body (200) into the end of the tube body (100) close to the flange (110) so that the limiting ring (210) is tightly fitted on the flange (110); Step 4: Insert the tube body (100) into the preset mold, and inject glue along the outer wall of the tube body (100), the outer wall of the upper needle body (200), and the axial direction of the tube body (100) to the outer side of the flange (110) and the limiting ring (210) in the injection direction B and the injection direction C. The glue flows along the outer wall of the tube body (100) to form a first wrapping ring (510), and the glue flows along the outer wall of the upper needle body (200) to form a second wrapping ring (520). At the same time, the glue covers the outer wall of the flange (110) and the limiting ring (210) to form a third wrapping ring (540), thereby completing the injection molding of the second fastener (600).

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