Mounting device and mounting method for marked heat shrink tube of optical fiber movable connector

Abstract

The invention discloses an installation device and an installation method for an optical fiber movable connector heat shrink tube with identification, and relates to the field of connectors with identification, the installation device comprises a positioning platform and a heat shrink upper cover, the top surface of the positioning platform is provided with a plurality of connector shell grooves in the width direction of the positioning platform, and the top surface of the positioning platform is provided with a plurality of cable grooves in the width direction of the positioning platform; the cable grooves are in one-to-one correspondence with the connector shell grooves, a thermal shrinkage groove is formed in the top face of the positioning platform, the connector shell grooves and the cable grooves are communicated with the two ends of the thermal shrinkage groove respectively, two sets of positioning plates are arranged in the thermal shrinkage groove, the two sets of positioning plates are arranged at intervals in the axial direction of the cable grooves, and the positioning plates are slidably connected with the positioning platform. A heating cavity is arranged below the thermal shrinkage groove in the positioning platform, a plurality of hot air holes are densely formed in the bottom wall of the thermal shrinkage groove in the positioning platform, and the thermal shrinkage upper cover covers the positioning platform, so that the fixing positions of the thermal shrinkage pipes of a plurality of connectors are consistent, and the shapes after thermal shrinkage are kept consistent.

Description

Technical Field

[0001] The invention relates to the technical field of connector with identification, in particular to an installation device and an installation method of a heat shrink tube with identification for an optical fiber active connector. Background Art

[0002] With the rapid development of communication networks, dual-core fiber optic connector products have the characteristics of simplicity, reliability, low insertion loss, and low return loss. They are mainly used in fiber-to-the-home (FTTH) and fiber-to-the-desktop (FTTD) bidirectional data transmission occasions. Provide two independent fiber channels to support simultaneous sending and receiving of data, thereby improving the efficiency and reliability of data transmission. The functions of two optical fibers are realized through a dual-core fiber optic connector, which reduces the use of optical fibers and connectors, thereby reducing the cost and complexity of wiring. The parallel transmission of dual-core optical fibers can significantly improve the transmission efficiency and reduce transmission delay. In order to improve the efficiency of construction and installation, the dual-channel identification of the product is done well to ensure the smooth operation of the network. Domestic and foreign customers have requirements for product identification: maintain consistency with the front of the connector, and keep the distance between the identification and the tail of the connector consistent. At present, workers use air to heat shrink the heat shrink tube to fix it on the cable. The heat shrink tube is heated unevenly and easily deformed, affecting the quality of heat shrinkage. Secondly, the fixed position accuracy of the heat shrink tube is not high, and the distance between the heat shrink tube and the tail of the connector is deviated, which does not meet customer requirements. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide an installation device and an installation method for an optical fiber active connector with a marked heat shrink tube, so as to solve the deficiencies of the prior art.

[0004] The objective of the present invention is achieved through the following technical solutions: an installation device for an optical fiber active connector with a marked heat shrink tube, comprising a positioning platform and a heat shrink cover, the top surface of the positioning platform is provided with a plurality of connector housing grooves along its width direction, the top surface of the positioning platform is provided with a plurality of cable grooves along its width direction, the plurality of cable grooves correspond to the plurality of connector housing grooves one by one, the top surface of the positioning platform is provided with a heat shrink groove, the connector housing groove and the cable groove are respectively connected to the two ends of the heat shrink groove, and two sets of positioning Plate, two groups of positioning plates are arranged at intervals along the axial direction of the cable groove, the positioning plates are slidably connected to the positioning platform, a heating chamber is provided in the positioning platform below the heat shrink groove, a plurality of hot air holes are densely opened on the bottom wall of the heat shrink groove of the positioning platform, the heat shrink upper cover is covered on the positioning platform, a heat shrink groove is provided on the bottom surface of the heat shrink upper cover at a position corresponding to the heat shrink groove, a hot air chamber is provided in the heat shrink upper cover above the heat shrink groove, and a plurality of air holes are opened on the top surface of the heat shrink groove of the heat shrink upper cover, and the air holes are connected to the hot air chamber.

[0005] Furthermore, both side walls of the heat shrink groove are provided with sliding grooves, one end of the two positioning plates are respectively slidably fitted in the two sliding grooves, a lower screw rod is rotatably arranged in the sliding groove, a first threaded hole is provided at one end of the positioning plate close to the lower screw rod, one end of the lower screw rod is threadedly fitted in the first threaded hole, and the other end of the lower screw rod passes through the positioning platform and is fixed with a lower knob.

[0006] Furthermore, two baffles are arranged in the heat shrink slot along the axial direction of the cable slot, and horizontal slide grooves are provided on both side walls of the heat shrink slot. One end of the two baffles is slidably fitted in the two horizontal slide grooves respectively.

[0007] Furthermore, an upper screw rod is rotatably arranged in the horizontal slide groove, a second threaded hole is opened at one end of the baffle plate close to the upper screw rod, one end of the upper screw rod is threadedly adapted in the second threaded hole, and the other end of the upper screw rod passes through the heat shrink upper cover and is fixed with an upper knob.

[0008] Furthermore, one side of the positioning platform and one end of the heat shrinkable upper cover are both provided with linear scales, and the linear scales extend toward the axial direction of the cable groove.

[0009] Furthermore, a limiting groove is provided on the bottom surface of the heat shrinkable upper cover at a position corresponding to the cable groove, and a shell limiting groove is provided on the bottom surface of the heat shrinkable upper cover at a position corresponding to the connector shell groove. The limiting groove and the shell limiting groove are both connected to the heat shrinkable groove, and an arc-shaped elastic layer is fixed in the limiting groove, and the arc-shaped elastic layer is squeezed onto the cable of the connector through its own compression deformation.

[0010] Furthermore, a locking screw is passed through the heat shrinkable upper cover, and a threaded hole is opened on the top surface of the positioning platform at a position corresponding to the locking screw, and the locking screw thread is adapted to fit in the threaded hole.

[0011] Furthermore, a positioning cone hole is opened on the top of the positioning platform, and a positioning cone is fixed on the bottom of the heat shrinkable upper cover, and the positioning cone is adapted in the positioning cone hole.

[0012] Furthermore, one end of the positioning platform and one end of the heat shrinkable upper cover are both connected to a hot air pipe, and the two hot air pipes are connected to the heating chamber and the hot air chamber respectively.

[0013] A method for installing a heat shrink tube with a mark for an optical fiber active connector, using the above-mentioned installation device, comprises the following steps:

[0014] S1. Cover the qualified product with a dust cap and place it on the positioning platform for heat shrink tube installation. The tail of the connector fits into the connector housing groove, the cable part of the connector passes through the cable groove, and the marked heat shrink tube on the cable is located in the heat shrink groove;

[0015] S2. According to the customer's requirements for the installation position of the heat shrink tube, adjust the position of the positioning plate close to the connector housing slot so that the distance between the positioning plate and the rear of the connector is equal to the installation length of the heat shrink tube, move the heat shrink tube to contact the positioning plate, and complete the positioning of the heat shrink tube;

[0016] S3. Turn the heat shrink tube so that the marked side of the heat shrink tube is aligned with the front side of the connector tail, and then adjust the other positioning plate so that the other positioning plate contacts the other end of the heat shrink tube. The heat shrink tube is clamped by the two positioning plates to keep the position of the heat shrink tube unchanged.

[0017] S4, the heat shrink cover is closed on the positioning platform, hot air is introduced into the heating cavity and the hot air cavity through the hot air pipe, and the hot air is ejected from the air holes and the hot air holes to act on the heat shrink tube, thereby shrinking the heat shrink tube and fixing it on the cable;

[0018] S5. Open the heat shrink cover and take out the product, thus completing the heat shrink labeling work for multiple connectors.

[0019] The beneficial effects of the present invention are:

[0020] 1. Use two positioning plates to position the heat shrink tube and clamp the heat shrink tube during the heat shrink process to prevent the heat shrink tube from deflecting, so that the distance between the mark on the heat shrink tube and the tail is more accurate, so that the fixed position of the heat shrink tube of multiple connectors is consistent, and the shape after heat shrinkage is consistent.

[0021] 2. The heat shrinking operation of multiple connectors can be completed at one time, which improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The structure diagram of the installation device of the optical fiber active connector with a marked heat shrink tube of the present invention is shown in FIG. Figure 1 ;

[0023] Figure 2 The structure diagram of the installation device of the optical fiber active connector with a marked heat shrink tube of the present invention is shown in FIG. Figure 2 ;

[0024] Figure 3 It is a schematic diagram of the internal structure of a positioning platform in an installation device of an optical fiber active connector with a marked heat shrink tube according to the present invention;

[0025] Figure 4 It is a schematic diagram of the internal structure of a heat shrinkable upper cover in an installation device of an optical fiber active connector with a marked heat shrinkable tube according to the present invention;

[0026] In the figure, 1-positioning platform, 2-heat shrink cover, 3-connector shell groove, 4-cable groove, 5-heat shrink groove, 6-positioning plate, 7-heating chamber, 8-hot air hole, 9-hot air chamber, 10-air hole, 11-heat shrink groove, 12-slide, 13-lower screw, 14-first threaded hole, 15-lower knob, 16-baffle, 17-horizontal slide, 18-upper screw, 19-second threaded hole, 20-upper knob, 21-limiting groove, 22-shell limiting groove, 23-arc elastic layer, 24-locking screw, 25-threaded hole, 26-positioning cone hole, 27-positioning cone, 28-hot air pipe. DETAILED DESCRIPTION

[0027] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following.

[0028] Embodiment 1

[0029] like Figures 1 to 4As shown, an installation device for an optical fiber active connector with a marked heat shrink tube comprises a positioning platform 1 and a heat shrink upper cover 2. The top surface of the positioning platform 1 is provided with a plurality of connector housing grooves 3 along its width direction. The top surface of the positioning platform 1 is provided with a plurality of cable grooves 4 along its width direction. The plurality of cable grooves 4 correspond to the plurality of connector housing grooves 3 one by one. The top surface of the positioning platform 1 is provided with a heat shrink groove 5. The connector housing groove 3 and the cable groove 4 are respectively connected to the two ends of the heat shrink groove 5. Two groups of positioning plates 6 are arranged in the heat shrink groove 5. The two groups of positioning plates 6 are spaced apart along the axial direction of the cable groove 4. The positioning plates 6 are slidably connected to the positioning platform 1. Platform 1, a heating chamber 7 is provided below the heat shrink groove 5 in the positioning platform 1, a plurality of hot air holes 8 are densely opened on the bottom wall of the heat shrink groove 5 of the positioning platform 1, a heat shrink upper cover 2 is covered on the positioning platform 1, a heat shrink slot 11 is opened on the bottom surface of the heat shrink upper cover 2 at a position corresponding to the heat shrink groove 5, a hot air chamber 9 is provided above the heat shrink slot 11 in the heat shrink upper cover 2, a plurality of air holes 10 are opened on the top surface of the heat shrink slot 11 of the heat shrink upper cover 2, and the air holes 10 are connected to the hot air chamber 9, one end of the positioning platform 1 and one end of the heat shrink upper cover 2 are both connected to a hot air pipe 28, and the two hot air pipes 28 are respectively connected to the heating chamber 7 and the hot air chamber 9;First, assemble the connector to be installed with the marked heat shrink tube on the positioning platform 1, and assemble a connector in each connector shell slot 3. The tail of the connector is adapted in the connector shell slot 3. The shape of the connector shell slot 3 matches the tail of the connector, so that the connector can be limited. The cable part of the connector passes through the cable slot 4, and the cable of the connector is straightened. At this time, the heat shrink tube sleeved on the cable is located in the heat shrink slot 5. The position of the heat shrink tube is positioned by two positioning plates 6 in the heat shrink tube 5, and the heat shrink tube is limited in the subsequent heat shrink process. First, adjust the positioning plate 6 close to the connector shell slot 3 so that the distance between the positioning plate 6 and the tail of the connector is equal to the distance between the heat shrink tube and the tail of the connector. Move the heat shrink tube to contact the positioning plate 6, so that the position of the heat shrink tube can be located. The positioning plate 6 is located below the cable, and the top surface of the positioning plate 6 is located above the bottom surface of the heat shrink tube, so that the heat shrink tube can contact the positioning plate 6 for positioning, and rotate the heat shrink Tube, make the end face of the heat shrink tube with the mark consistent with the front face of the connector tail, then move another positioning plate 6, make the positioning plate 6 away from the connector housing groove 3 contact the heat shrink tube, so that the two positioning plates 6 respectively contact the two ends of the heat shrink tube, complete the clamping and limiting of the heat shrink tube, ensure that the position of the heat shrink tube will not be offset during the heat shrink fixation process, then the heat shrink cover 2 is covered on the positioning platform 1, the heat shrink notch 11 and the heat shrink groove 5 form a closed cavity, the hot air pipe 28 is connected to the hot air equipment, and the hot air is passed into the heating cavity 7 and the hot air cavity 9 through the hot air pipe 28, and then the hot air is ejected from the hot air hole 8 and the air hole 10 to act on the heat shrink tube, so that the heat shrink tube is heat-shrunk and fixed on the cable, after the heat shrink is completed, remove the heat shrink cover 2, take out the connector and install the next group of connectors for heat shrink operation, so that the fixed position of the heat shrink tubes of multiple connectors is consistent, and the shape after heat shrinkage is consistent. Secondly, the heat shrink operation of multiple connectors can be completed at one time, which improves production efficiency. ;

[0030] Embodiment 2

[0031] Based on the first embodiment, Figure 3 and Figure 4The two sides of the heat shrink groove 5 are provided with a slide groove 12, and one end of the two positioning plates 6 is slidably adapted in the two slide grooves 12 respectively, and a lower screw rod 13 is rotatably arranged in the slide groove 12, and the end of the positioning plate 6 close to the lower screw rod 13 is provided with a first threaded hole 14, one end of the lower screw rod 13 is threadedly adapted in the first threaded hole 14, and the other end of the lower screw rod 13 passes through the positioning platform 1 and is fixed with a lower knob 15. By turning the lower knob 15, the lower screw rod 13 is driven to rotate, and the rotational freedom of the positioning plate 6 is limited by the cooperation between the positioning plate 6 and the slide groove 12, so that the positioning plate 6 can move linearly along the axial direction of the lower screw rod 13, so that the positioning plate 6 can be adjusted according to the installation position of the heat shrink tube to locate and limit the position of the heat shrink tube. At the same time, the positioning plate 6 contacts the bottom wall of the heat shrink groove 5, so that the positioning plate 6 blocks the hot air hole 8 at a position other than the heat shrink tube, so that the ejected hot air basically acts on the heat shrink tube, so that the hot air will not affect the cable, and it is ensured that the cable will not be deformed by heat during the heat shrink process.

[0032] Furthermore, two baffles 16 are arranged at axial intervals along the cable groove 4 in the heat shrink groove 11, and horizontal slide grooves 17 are provided on both side walls of the heat shrink groove 11. One end of the two baffles 16 is slidably adapted in the two horizontal slide grooves 17 respectively, and an upper screw rod 18 is rotatably arranged in the horizontal slide groove 17. A second threaded hole 19 is provided at one end of the baffle 16 close to the upper screw rod 18, and one end of the upper screw rod 18 is threadedly adapted in the second threaded hole 19, and the other end of the upper screw rod 18 passes through the heat shrink upper cover 2 and is fixed with an upper knob 20. Similarly, rotating the upper knob 20 drives the upper screw rod 18 to rotate, so that the baffle 16 moves linearly along the axial direction of the upper screw rod 18, and the air holes 10 outside the heat shrink tube are blocked by the baffle 16, so that the hot air will not affect the cables.

[0033] Embodiment 3

[0034] Based on the second embodiment, a linear scale is provided on one side of the positioning platform 1 and one end of the heat shrink cover 2. The linear scale extends axially toward the cable groove 4. The position of the positioning plate 6 and the baffle 16 can be accurately controlled by the linear scale to keep the heat shrink position of the heat shrink tube consistent.

[0035] Embodiment 4

[0036] Based on the third embodiment, Figures 1 to 4As shown, a limiting groove 21 is provided on the bottom surface of the heat shrinkable upper cover 2 at a position corresponding to the cable groove 4, and a shell limiting groove 22 is provided on the bottom surface of the heat shrinkable upper cover 2 at a position corresponding to the connector shell groove 3. The limiting groove 21 and the shell limiting groove 22 are both connected to the heat shrinkable notch 11, and an arc-shaped elastic layer 23 is fixed in the limiting groove 21. The arc-shaped elastic layer 23 is squeezed on the cable of the connector through its own compression deformation. A locking screw 24 is passed through the heat shrinkable upper cover 2, and a threaded hole 25 is provided on the top surface of the positioning platform 1 at a position corresponding to the locking screw 24. The locking screw 24 is threadedly adapted in the threaded hole 25. A positioning cone hole 26 is provided on the top of the positioning platform 1. A positioning cone 27 is fixed to the bottom of the upper cover 2, and the positioning cone 27 is adapted in the positioning cone hole 26. The positioning cone 27 of the heat shrink upper cover 2 is buckled corresponding to the positioning cone hole 26 of the positioning platform 1, so that the positioning cone 27 is adapted in the positioning cone hole 26 to complete the positioning and buckling of the positioning platform 1 and the heat shrink upper cover 2. At this time, the threaded hole 25 is located on the moving path of the locking screw 24, and then the locking screw 24 is tightened to make the arc-shaped elastic layer 23 squeeze the cable to complete the limitation of the cable, and the shell limiting groove 22 cooperates with the connector shell groove 3 to limit the tail of the connector, thereby comprehensively restricting the connector, so that the fixing accuracy and fixing quality of the heat shrink tube are higher.

[0037] A method for installing a heat shrink tube with a mark for an optical fiber active connector, using the above-mentioned installation device, comprises the following steps:

[0038] S1. Cover the qualified product with a dust cap and place it on the positioning platform 1 for heat shrink tube installation. The tail of the connector fits into the connector housing groove 3, the cable part of the connector passes through the cable groove 4, and the marked heat shrink tube on the cable is located in the heat shrink groove 5;

[0039] S2. According to the customer's requirements for the installation position of the heat shrink tube, adjust the position of the positioning plate 6 close to the connector housing groove 3 so that the position of the positioning plate 6 from the rear of the connector is equal to the installation length of the heat shrink tube, move the heat shrink tube to contact the positioning plate 6, and complete the positioning of the heat shrink tube;

[0040] S3, rotate the heat shrink tube so that the side of the heat shrink tube with the mark is consistent with the front side of the connector tail, and then adjust the other positioning plate 6 so that the other positioning plate 6 contacts the other end of the heat shrink tube, and clamp the heat shrink tube by the two positioning plates 6 to keep the position of the heat shrink tube unchanged;

[0041] S4. Close the heat shrink cover 2 on the positioning platform 1, and introduce hot air into the heating chamber 7 and the hot air chamber 9 through the hot air pipe 28. The hot air is ejected from the air hole 10 and the hot air hole 8 to act on the heat shrink tube, thereby shrinking the heat shrink tube and fixing it on the cable. The heat shrink time needs to be set here. The sheath material of the optical cable is generally PVC or LSZH, and the heat shrink tube material is generally PVC with different thicknesses. Generally, when the optical cable is made of PVC, the heat shrink temperature shall not be higher than 70 degrees and the time shall not exceed 5S. When the optical cable is made of LSZH, the heat shrink temperature shall not be higher than 50 degrees and the time shall not exceed 4S. Avoid excessively high temperatures and long times, which may cause deformation of the optical cable sheath and affect the appearance of the product.

[0042] S5, open the heat shrink upper cover 2, take out the product, and complete the heat shrink labeling work of multiple connectors.

Claims

1. An installation device for an optical fiber active connector with a heat shrink tube having a marking, characterized in that: The invention comprises a positioning platform (1) and a heat shrinkable upper cover (2), wherein the top surface of the positioning platform (1) is provided with a plurality of connector housing grooves (3) along its width direction, the top surface of the positioning platform (1) is provided with a plurality of cable grooves (4) along its width direction, the plurality of cable grooves (4) corresponding to the plurality of connector housing grooves (3) one by one, the top surface of the positioning platform (1) is provided with a heat shrinkable groove (5), the connector housing groove (3) and the cable groove (4) are respectively connected to the two ends of the heat shrinkable groove (5), two groups of positioning plates (6) are arranged in the heat shrinkable groove (5), the two groups of positioning plates (6) are arranged at intervals along the axial direction of the cable groove (4), and the positioning plates ( 6) Slidingly connected to the positioning platform (1), a heating chamber (7) is provided in the positioning platform (1) below the heat shrink groove (5), a plurality of hot air holes (8) are densely provided on the bottom wall of the heat shrink groove (5) of the positioning platform (1), the heat shrink upper cover (2) is covered on the positioning platform (1), a heat shrink groove (11) is provided on the bottom surface of the heat shrink upper cover (2) at a position corresponding to the heat shrink groove (5), a hot air chamber (9) is provided in the heat shrink upper cover (2) above the heat shrink groove (11), and a plurality of air holes (10) are provided on the top surface of the heat shrink groove (11) of the heat shrink upper cover (2), and the air holes (10) are connected to the hot air chamber (9).

2. The installation device of the optical fiber active connector with a heat shrink tube with a mark according to claim 1, characterized in that: Both side walls of the heat shrink groove (5) are provided with sliding grooves (12), one end of the two positioning plates (6) are respectively slidably fitted in the two sliding grooves (12), a lower screw rod (13) is rotatably arranged in the sliding groove (12), a first threaded hole (14) is provided at one end of the positioning plate (6) close to the lower screw rod (13), one end of the lower screw rod (13) is threadedly fitted in the first threaded hole (14), and the other end of the lower screw rod (13) passes through the positioning platform (1) and is fixed with a lower knob (15).

3. The installation device of the optical fiber active connector with a marked heat shrink tube according to claim 1, characterized in that: Two baffles (16) are arranged in the heat shrink slot (11) at intervals along the axial direction of the cable slot (4), and horizontal slide grooves (17) are provided on both side walls of the heat shrink slot (11), and one end of the two baffles (16) is slidably fitted in the two horizontal slide grooves (17) respectively.

4. The installation device of the optical fiber active connector with a marked heat shrink tube according to claim 3, characterized in that: An upper screw rod (18) is rotatably arranged in the horizontal slide groove (17); a second threaded hole (19) is formed at one end of the baffle plate (16) close to the upper screw rod (18); one end of the upper screw rod (18) is threadedly fitted in the second threaded hole (19); and the other end of the upper screw rod (18) passes through the heat shrink upper cover (2) and is fixed with an upper knob (20).

5. The installation device of the optical fiber active connector with a heat shrink tube with a mark according to claim 1, characterized in that: One side of the positioning platform (1) and one end of the heat shrinkable upper cover (2) are both provided with linear scales, and the linear scales extend in the axial direction of the cable groove (4).

6. The installation device of the optical fiber active connector with a heat shrink tube with a mark according to claim 1, characterized in that: The bottom surface of the heat shrinkable upper cover (2) is provided with a limiting groove (21) at a position corresponding to the cable groove (4), and the bottom surface of the heat shrinkable upper cover (2) is provided with a shell limiting groove (22) at a position corresponding to the connector shell groove (3). The limiting groove (21) and the shell limiting groove (22) are both connected to the heat shrinkable groove (11), and an arc-shaped elastic layer (23) is fixed in the limiting groove (21), and the arc-shaped elastic layer (23) is squeezed onto the cable of the connector through its own compression deformation.

7. The installation device of the optical fiber active connector with a heat shrink tube with a mark according to claim 6, characterized in that: The heat shrinkable upper cover (2) is provided with a locking screw (24), and a threaded hole (25) is provided on the top surface of the positioning platform (1) at a position corresponding to the locking screw (24), and the locking screw (24) is threadably fitted in the threaded hole (25).

8. The installation device of the optical fiber active connector with a marked heat shrink tube according to claim 1, characterized in that: A positioning cone hole (26) is provided on the top of the positioning platform (1), and a positioning cone (27) is fixed on the bottom of the heat shrinkable upper cover (2), and the positioning cone (27) is adapted to fit in the positioning cone hole (26).

9. The installation device of the optical fiber active connector with a marked heat shrink tube according to claim 1, characterized in that: One end of the positioning platform (1) and one end of the heat shrinkable upper cover (2) are both connected to a hot air pipe (28), and the two hot air pipes (28) are connected to the heating chamber (7) and the hot air chamber (9) respectively.

10. A method for installing a heat shrink tube with a marking on an optical fiber active connector, using the installation device according to claim 9, characterized in that: The following steps are involved: S1. Cover the qualified product with a dust cap and place it on the positioning platform (1) to install the heat shrink tube. The tail of the connector fits into the connector housing groove (3). The cable part of the connector passes through the cable groove (4). The marked heat shrink tube on the cable is located in the heat shrink groove (5). S2. According to the customer's requirements for the installation position of the heat shrink tube, adjust the position of the positioning plate (6) close to the connector housing groove (3) so that the position of the positioning plate (6) from the rear of the connector is equal to the installation length of the heat shrink tube, move the heat shrink tube so that it contacts the positioning plate (6), and complete the positioning of the heat shrink tube; S3, rotate the heat shrink tube so that the side of the heat shrink tube with the mark is consistent with the front side of the connector tail, and then adjust the other positioning plate (6) so that the other positioning plate (6) contacts the other end of the heat shrink tube, and clamp the heat shrink tube by the two positioning plates (6) to keep the position of the heat shrink tube unchanged; S4, the heat shrink upper cover (2) is closed on the positioning platform (1), hot air is introduced into the heating chamber (7) and the hot air chamber (9) through the hot air pipe (28), and the hot air is ejected from the air hole (10) and the hot air hole (8) to act on the heat shrink tube, thereby shrinking the heat shrink tube and fixing it on the cable; S5. Open the heat shrink upper cover (2) and take out the product, thus completing the heat shrink labeling work for multiple connectors.

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