Device and method for efficiently and precisely assembling sealing gasket on wire harness end
By designing a device including a base plate, a vertical plate, a lower cylinder, a connecting plate, a pressing plate and a positioning assembly, the problems of low efficiency and low accuracy of assembly of sealing gaskets on the end of the line harness are solved, and efficient and precise sealing gasket assembly is achieved.
Patent Information
- Application Number
- CN202411979113.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-03-18
AI Technical Summary
The prior art is inefficient and low in accuracy when assembling seals on harness ends. It takes a long time to install the through-hole sleeve of the seal on the wiring head, and the position of the seal is not accurately controlled.
A device including a base plate, a vertical plate, a lower pressure cylinder, a connecting plate, a press plate and a positioning assembly is designed. The piston rod of the lower pressure cylinder extends downward, driving the connecting plate and the press plate downward movement. The U-shaped groove of the press plate is placed outside the housing, driving the synchronous downward movement of the wire harness end until the wiring head is inserted into the through hole of the sealing gasket.
It significantly improves the efficiency and accuracy of assembling seals on the harness ends, ensuring that the seals can be accurately fitted at the designated position of the wiring head, and improves product consistency.
Smart Images
Figure CN119651307A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of sleeve-mounting a sealing gasket on two wiring heads of a wiring harness end, in particular to a device and a method for efficiently and precisely assembling a sealing gasket on a wiring harness end. Background Art
[0002] The structure of a wiring harness end is as follows Figure 1~Figure 2 As shown, it includes a shell 1, an elliptical cylinder 2 connected to the shell 1 is fixedly provided at the bottom, the cross section of the elliptical cylinder 2 is elliptical, a conductive column 3 is fixedly provided in the shell 1, and two terminal heads 4 extending into the elliptical cylinder 2 are fixedly provided at the lower end of the conductive column 3, and the two terminal heads 4 are vertically arranged; an annular platform 5 is fixedly provided on the outer cylindrical surface of the shell 1.
[0003] When a batch of wire harness ends are produced in the workshop, the process requires that a sealing gasket 6 be installed on the wire harness end. That is, a sealing gasket 6 is required to be installed between the two wiring heads 4 of the wire harness end. Figure 3 The sealing gasket 6 shown in the figure is oval in shape and has two through holes 7 therein. The two through holes 7 in the sealing gasket 6 are respectively sleeved on the two terminal heads 4. Figure 4 shown.
[0004] The method for assembling a sealing gasket 6 on the end of the wire harness in a workshop is: S1. A worker takes out a wire harness end and places the elliptical cylinder 2 of the wire harness end upward; S2. The worker holds a sealing gasket 6 with tweezers, inserts the sealing gasket 6 into the elliptical cylinder 2 of the wiring harness end, and then adjusts the position of the sealing gasket 6 to ensure that the two through holes 7 in the sealing gasket 6 are respectively facing the two wiring heads 4. After the position is adjusted, the worker presses down the tweezers, and then the two through holes 7 of the sealing gasket 6 are respectively sleeved on the two wiring heads 4, thereby finally assembling a sealing gasket 6 on the wiring harness end; S3. The worker repeats the operations of steps S1 to S2 to continuously assemble a sealing pad 6 on multiple wire harness ends.
[0005] However, although the method used in the workshop can assemble a sealing gasket 6 on the end of the wire harness, the following technical defects still exist in the technology: I. In step S3, since the inner cavity size of the elliptical cylinder 2 of the wiring harness end is relatively small and the two terminal heads 4 are still in the elliptical cylinder 2, it takes a long time to respectively cover the two through holes 7 of the sealing gasket 6 on the two terminal heads 4, thereby reducing the efficiency of assembling the sealing gasket 6 on the wiring harness end.
[0006] II. Since the worker cannot precisely control the force with which the tweezers are pressed downward, the sealing pad 6 cannot be precisely fitted on the designated position of the terminal head 4, resulting in a technical defect of low assembly accuracy.
[0007] Therefore, there is an urgent need for a device and method that greatly improves the efficiency of assembling a sealing gasket on a wiring harness end and improves the assembly accuracy of the sealing gasket. Summary of the invention
[0008] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a device and method for efficiently and precisely assembling sealing gaskets on wiring harness ends, which greatly improves the efficiency of assembling sealing gaskets on wiring harness ends and improves the assembly accuracy of sealing gaskets.
[0009] The object of the present invention is achieved by the following technical scheme: a device for efficiently and accurately assembling a sealing gasket on a wiring harness end, comprising a bottom plate, a vertical plate fixed on the top surface of the bottom plate, a vertically arranged downward pressure cylinder fixed on the front end surface of the vertical plate, a connecting plate fixed on the action end of the piston rod of the downward pressure cylinder, a pressing plate fixed on the bottom surface of the connecting plate, and a U-shaped groove opened on the front end surface of the pressing plate; A rod is fixedly provided on the top surface of the bottom plate and is located directly below the U-shaped groove. The cross section of the rod is elliptical, and a waist-shaped hole is provided on the top surface of the rod along its axial direction. A strip groove is provided in the rod along its height direction, and a positioning component is sleeved on the upper end of the rod and can move along its height direction. The positioning component includes a support seat and a positioning seat that are fixedly connected to one another. The outer cylindrical surface of the positioning seat cooperates with the elliptical cylinder. An elliptical hole is provided in the positioning component and sequentially penetrates the top surface of the positioning seat and the bottom surface of the support seat. The positioning component is slidably sleeved on the upper end of the rod through the elliptical hole, and a pin shaft that sequentially penetrates the support seat and the strip groove is fixed on the outer wall of the support seat. The top end of the rod extends into the positioning seat of the positioning assembly, and the vertical spacing between the top surface of the rod and the top surface of the positioning seat is equal to the thickness of the sealing gasket; a spring is sleeved on the rod, the bottom end of the spring is fixed on the bottom plate, and the top end of the spring is fixed on the bottom surface of the support seat. Under the elastic force of the spring, the pin shaft abuts against the top wall of the strip groove, thereby limiting the support seat.
[0010] Four foot pads are fixedly arranged on the bottom surface of the bottom plate, and the four foot pads are respectively fixedly arranged at the four corners of the bottom plate.
[0011] A stopper communicating with the elliptical hole of the positioning assembly is provided on the top surface of the rod.
[0012] A pin hole communicating with the strip groove is provided in the support seat, and the pin shaft matches with the pin hole.
[0013] The device also includes a controller, which is electrically connected to the downward pressure cylinder via a signal line.
[0014] A method for efficiently and precisely assembling a sealing gasket on a wiring harness end, comprising the following steps: S1. Positioning and installation of the sealing gasket: The worker takes out a sealing gasket from the basket, inserts the sealing gasket into the elliptical hole of the positioning assembly from top to bottom, and supports the sealing gasket on the top surface of the rod, thereby realizing the positioning and installation of the sealing gasket. At this time, the two through holes of the sealing gasket are respectively connected with the two waist-shaped holes of the rod. In addition, since the vertical distance between the top surface of the rod and the top surface of the positioning seat is equal to the thickness of the sealing gasket, the top surface of the sealing gasket is just flush with the top surface of the positioning seat of the positioning assembly; S2. Positioning and installation of the wire harness end: The worker takes out a wire harness end, puts the elliptical cylinder of the wire harness end on the positioning seat of the positioning assembly from top to bottom, and supports the elliptical cylinder on the top surface of the support seat of the positioning assembly. Since the outer cylindrical surface of the positioning seat cooperates with the elliptical cylinder, the positioning of the wire harness end is achieved. At this time, the two wiring heads in the wire harness end are respectively located directly above the two through holes of the sealing gasket, and at the same time, the annular platform on the outer cylindrical surface of the housing of the wire harness end is just located directly below the pressure plate; S3. The worker controls the piston rod of the downward pressure cylinder to extend downward, the piston rod drives the connecting plate to move downward, the connecting plate drives the pressing plate to move downward, the U-shaped groove of the pressing plate is sleeved on the outside of the shell, and just presses on the top surface of the annular table; Under the pressure of the pressure plate, the annular stage drives the housing of the wiring harness end to move downward, and the housing drives the conductive column, the elliptical cylinder and the two wiring heads to move downward synchronously, and the elliptical cylinder drives the positioning seat to move downward along the rod relative to the stationary sealing gasket, and the positioning seat drives the supporting seat to move downward along the rod synchronously, and the supporting seat compresses the spring downward, and at the same time, the two wiring heads move toward the two through holes of the sealing gasket respectively; when the piston rod of the pressing cylinder is extended to the set distance, the two wiring heads are just inserted into the two through holes of the sealing gasket respectively, and finally a sealing gasket is assembled on the wiring harness end; S4. Removal of the wire harness end equipped with the sealing gasket: After maintaining the pressure for 3 to 5 seconds, the piston rod of the pressing cylinder retracts upward, and the piston rod drives the pressing plate to move upward. At the same time, under the restoring force of the spring, the positioning seat and the supporting seat both move upward along the rod until the pin in the supporting seat is blocked by the top wall of the strip groove; S5. The worker repeats the operations of steps S1 to S4 to continuously assemble a sealing gasket on multiple wire harness ends.
[0015] The present invention has the following advantages: the efficiency of assembling the sealing gasket on the wire harness end head is greatly improved, and the assembly accuracy of the sealing gasket is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1It is a structural schematic diagram of a certain wiring harness end; Figure 2 for Figure 1 A cross-sectional view of Figure 3 is a schematic structural diagram of a sealing gasket 6; Figure 4 It is a schematic diagram of respectively sleeve-mounting two through holes 7 in the sealing gasket 6 on two terminal heads 4; Figure 5 It is a structural schematic diagram of the present invention; Figure 6 for Figure 5 A partial enlarged view of part A; Figure 7 is a schematic structural diagram of the pressing plate 12; Figure 8 It is a schematic diagram of the structure of the positioning component; Fig. 9 is a schematic structural diagram of the rod 14; Fig.10 A schematic diagram for realizing the positioning and installation of the sealing gasket 6; Fig.11 for Fig.10 A partial enlarged view of part B; Fig.12 A schematic diagram for positioning the wiring harness end; Fig.13 for Fig.12 A schematic diagram in which the shell 1 and the elliptical cylinder 2 are removed; Fig.14 for Fig.13 A partial enlarged view of the C part; Fig.15 A schematic diagram showing a sealing gasket 6 assembled on the end of the wiring harness; Fig.16 for Fig.15 A schematic diagram in which the shell 1 and the elliptical cylinder 2 are removed; Fig.17 for Fig.16 A partial enlarged view of the D part; In the figure: 1-shell, 2-elliptical cylinder, 3-conductive column, 4-connection head, 5-annular platform, 6-sealing gasket, 7-through hole; 8-bottom plate, 9-vertical plate, 10-downward pressure cylinder, 11-connecting plate, 12-pressing plate, 13-U-shaped groove, 14-rod, 15-strip groove, 16-support seat, 17-positioning seat, 18-elliptical hole, 19-pin shaft, 20-spring, 21-waist-shaped hole, 22-foot pad. DETAILED DESCRIPTION
[0017] The present invention is further described below in conjunction with the accompanying drawings, and the protection scope of the present invention is not limited to the following: like Figure 5~Figure 9 As shown, a device for efficiently and accurately assembling sealing gaskets on the ends of wiring harnesses comprises a base plate 8, a vertical plate 9 fixed on the top surface of the base plate 8, the vertical plate 9 being detachably fixed to the base plate 8 via locking screws, a vertically arranged downward pressure cylinder 10 being fixed on the front end surface of the vertical plate 9, a connecting plate 11 being fixed on the action end of the piston rod of the downward pressure cylinder 10, a pressing plate 12 being fixed on the bottom surface of the connecting plate 11, and a U-shaped groove 13 being opened on the front end surface of the pressing plate 12; four foot pads 22 are fixed on the bottom surface of the base plate 8, and the four foot pads 22 are respectively fixed at the four corners of the base plate 8.
[0018] A rod 14 is fixedly provided on the top surface of the bottom plate 8 and is located directly below the U-shaped groove 13. The cross-section of the rod 14 is elliptical, and a waist-shaped hole 21 is provided on the top surface of the rod 14 along its axial direction. A strip groove 15 is provided in the rod 14 along its height direction, and a positioning component that can move along its height direction is sleeved on the upper end of the rod 14. The positioning component includes a support seat 16 and a positioning seat 17 that are fixedly connected to each other. The outer cylindrical surface of the positioning seat 17 cooperates with the elliptical cylinder 2, and an elliptical hole 18 is provided in the positioning component, which sequentially penetrates the top surface of the positioning seat 17 and the bottom surface of the support seat 16. The positioning component is slidably sleeved on the upper end of the rod 14 through the elliptical hole 18, and a pin shaft 19 that sequentially penetrates the support seat 16 and the strip groove 15 is fixed on the outer wall of the support seat 16; a pin hole connected to the strip groove 15 is provided in the support seat 16, and the pin shaft 19 cooperates with the pin hole.
[0019] The top end of the rod 14 extends into the positioning seat 17 of the positioning assembly, and the vertical distance between the top surface of the rod 14 and the top surface of the positioning seat 17 is equal to the thickness of the sealing gasket 6; the rod 14 is sleeved with a spring 20, the bottom end of the spring 20 is fixed on the bottom plate 8, and the top end of the spring 20 is fixed on the bottom surface of the support seat 16. Under the elastic force of the spring 20, the pin 19 abuts against the top wall of the strip groove 15, thereby limiting the support seat 16. A stopper is provided on the top surface of the rod 14 to communicate with the elliptical hole 18 of the positioning assembly.
[0020] The device also includes a controller, which is electrically connected to the downward pressing cylinder 10 via a signal line. The downward pressing stroke of the piston rod of the downward pressing cylinder 10 can be controlled by the controller.
[0021] A method for efficiently and precisely assembling a sealing gasket on a wiring harness end, comprising the following steps: S1. Positioning and installation of sealing gasket 6: A worker takes out a Figure 3The sealing gasket 6 shown in the figure is embedded into the elliptical hole 18 of the positioning assembly from top to bottom, and the sealing gasket 6 is supported on the top surface of the rod 14, thereby achieving the positioning and installation of the sealing gasket 6, as shown in FIG. Figure 10~Figure 11 As shown, at this time, the two through holes 7 of the sealing gasket 6 are respectively connected to the two waist-shaped holes 21 of the rod 14. In addition, since the vertical distance between the top surface of the rod 14 and the top surface of the positioning seat 17 is equal to the thickness of the sealing gasket 6, the top surface of the sealing gasket 6 is just flush with the top surface of the positioning seat 17 of the positioning assembly; S2. Positioning and installation of the wiring harness end: The worker takes out a Figure 1~Figure 2 The wiring harness end shown in the figure, the elliptical cylinder 2 of the wiring harness end is placed on the positioning seat 17 of the positioning assembly from top to bottom, and the elliptical cylinder 2 is supported on the top surface of the support seat 16 of the positioning assembly. Since the outer cylindrical surface of the positioning seat 17 cooperates with the elliptical cylinder 2, the positioning of the wiring harness end is achieved, such as Figure 12~Figure 14 As shown, at this time, the two wiring terminals 4 in the wiring harness end are respectively located directly above the two through holes 7 of the sealing gasket 6, and at the same time, the annular platform 5 on the outer cylindrical surface of the housing 1 of the wiring harness end is just located directly below the pressing plate 12; S3, the worker controls the piston rod of the pressing cylinder 10 to extend downward, the piston rod drives the connecting plate 11 to move downward, the connecting plate 11 drives the pressing plate 12 to move downward, the U-shaped groove 13 of the pressing plate 12 is sleeved on the outside of the shell 1, and just presses on the top surface of the annular table 5; Under the pressure of the pressing plate 12, the annular stage 5 drives the housing 1 of the wiring harness end to move downward, and the housing 1 drives the conductive column 3, the elliptical cylinder 2 and the two terminal heads 4 to move downward synchronously, and the elliptical cylinder 2 drives the positioning seat 17 to move downward along the rod 14 relative to the stationary sealing gasket 6, and the positioning seat 17 drives the support seat 16 to move downward along the rod 14 synchronously, as shown in FIG. Figure 15-16 As shown, the support seat 16 compresses the spring 20 downward, and at the same time, the two wiring heads 4 move toward the two through holes 7 of the sealing gasket 6 respectively; after the piston rod of the pressing cylinder 10 extends to the set distance, the two wiring heads 4 are just inserted into the two through holes 7 of the sealing gasket 6 respectively, and finally a sealing gasket 6 is assembled on the end of the wiring harness. The assembled structure is shown in FIG. Figure 4 As shown; In step S3, when the piston rod of the pressing cylinder 10 is fully extended, the descending height of the two wiring heads 4 at the end of the wiring harness can be controlled relative to the stationary sealing gasket 6, so that the sealing gasket 6 can be accurately mounted on the designated position of the wiring head 4. It can be seen that compared with the assembly using tweezers in the workshop, the present device ensures that the sealing gasket 6 can be assembled to the designated position of the wiring head 4 every time, thereby ensuring the consistency of the assembled products and greatly improving the assembly accuracy.
[0022] S4. Removal of the wire harness end equipped with the sealing gasket 6: After maintaining the pressure for 3 to 5 seconds, the piston rod of the pressing cylinder 10 is retracted upward, and the piston rod drives the pressing plate 12 to move upward. At the same time, under the restoring force of the spring 20, the positioning seat 17 and the supporting seat 16 both move upward along the rod 14 until the pin 19 in the supporting seat 16 is blocked by the top wall of the strip groove 15; S5. The worker repeats the operations of steps S1 to S4 to continuously assemble a sealing pad 6 on multiple wire harness ends.
[0023] Among them, it can be seen from steps S1 to S3 that the worker only needs to first position the sealing gasket 6 in the area surrounded by the inner wall of the positioning seat 17 and the top surface of the rod 14, and then put the elliptical cylinder 2 of the wire harness end on the positioning seat 17 to achieve the positioning of the wire harness end, and finally only need to control the piston rod of the downward pressure cylinder 10 to extend downward, so that the two wiring heads 4 of the wire harness end can be quickly inserted into the two through holes 7 of the sealing gasket 6, and then quickly realize the assembly of a sealing gasket 6 on the wire harness end. It can be seen that compared with the assembly method in the workshop, this device does not require workers to manually assemble with tweezers, thereby completing the assembly of the wire harness end and the sealing gasket 6 in a short time, thereby greatly improving the efficiency of assembling the sealing gasket 6 on the wire harness end.
[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A device for efficiently and precisely assembling a sealing gasket on a wire harness end, characterized in that: It comprises a bottom plate (8), a vertical plate (9) fixedly mounted on the top surface of the bottom plate (8), a vertically mounted downward pressure cylinder (10) fixedly mounted on the front end surface of the vertical plate (9), a connecting plate (11) fixedly mounted on the action end of the piston rod of the downward pressure cylinder (10), a pressing plate (12) fixedly mounted on the bottom surface of the connecting plate (11), and a U-shaped groove (13) formed on the front end surface of the pressing plate (12); A rod (14) is fixedly provided on the top surface of the bottom plate (8) and is located directly below the U-shaped groove (13). The cross section of the rod (14) is elliptical. A waist-shaped hole (21) is provided on the top surface of the rod (14) and is arranged along its axial direction. A strip groove (15) is provided in the rod (14) and is arranged along its height direction. A positioning component that can move along its height direction is sleeved on the upper end of the rod (14). The positioning component includes a support seat (16) and a positioning seat (17) that are fixedly connected to each other. The outer cylindrical surface of the positioning seat (17) cooperates with the elliptical cylinder (2). An elliptical hole (18) is provided in the positioning component and passes through the top surface of the positioning seat (17) and the bottom surface of the support seat (16) in sequence. The positioning component is slidably sleeved on the upper end of the rod (14) through the elliptical hole (18). A pin shaft (19) that passes through the support seat (16) and the strip groove (15) in sequence is fixedly provided on the outer wall of the support seat (16). The top end of the rod (14) extends into the positioning seat (17) of the positioning assembly, and the vertical distance between the top surface of the rod (14) and the top surface of the positioning seat (17) is equal to the thickness of the sealing gasket (6); a spring (20) is sleeved on the rod (14), the bottom end of the spring (20) is fixed on the bottom plate (8), and the top end of the spring (20) is fixed on the bottom surface of the support seat (16). Under the elastic force of the spring (20), the pin shaft (19) abuts against the top wall of the strip groove (15), thereby limiting the support seat (16).
2. A device for efficiently and accurately assembling a sealing gasket on a wiring harness end according to claim 1, characterized in that: Four foot pads (22) are fixedly arranged on the bottom surface of the bottom plate (8), and the four foot pads (22) are respectively fixedly arranged at four corners of the bottom plate (8).
3. A device for efficiently and accurately assembling a sealing gasket on a wiring harness end according to claim 2, characterized in that: A stopper connected to the elliptical hole (18) of the positioning assembly is provided on the top surface of the rod (14).
4. The device for efficiently and accurately assembling a sealing gasket on a wiring harness end according to claim 3, characterized in that: A pin hole communicating with the strip groove (15) is provided in the support seat (16), and the pin shaft (19) matches the pin hole.
5. The device for efficiently and accurately assembling a sealing gasket on a wiring harness end according to claim 4, characterized in that: The device also includes a controller, which is electrically connected to the downward pressure cylinder (10) via a signal line.
6. A method for efficiently and accurately assembling a sealing gasket on a wiring harness end, using the device for efficiently and accurately assembling a sealing gasket on a wiring harness end as claimed in claim 5, characterized in that: It includes the following steps: S1. Positioning and installation of the sealing gasket (6): The worker takes out a sealing gasket (6) from the material basket, inserts the sealing gasket (6) into the elliptical hole (18) of the positioning assembly from top to bottom, and supports the sealing gasket (6) on the top surface of the rod (14), thereby realizing the positioning and installation of the sealing gasket (6). At this time, the two through holes (7) of the sealing gasket (6) are respectively connected to the two waist-shaped holes (21) of the rod (14). In addition, since the vertical distance between the top surface of the rod (14) and the top surface of the positioning seat (17) is equal to the thickness of the sealing gasket (6), the top surface of the sealing gasket (6) is just flush with the top surface of the positioning seat (17) of the positioning assembly; S2. Positioning and installation of the wiring harness end: The worker takes out a wiring harness end, puts the elliptical cylinder (2) of the wiring harness end on the positioning seat (17) of the positioning assembly from top to bottom, and supports the elliptical cylinder (2) on the top surface of the support seat (16) of the positioning assembly. Since the outer cylindrical surface of the positioning seat (17) matches the elliptical cylinder (2), the wiring harness end is positioned. At this time, the two wiring heads (4) in the wiring harness end are respectively located directly above the two through holes (7) of the sealing gasket (6). At the same time, the annular platform (5) on the outer cylindrical surface of the housing (1) of the wiring harness end is just located directly below the pressure plate (12); S3. The worker controls the piston rod of the downward-pressing cylinder (10) to extend downward, and the piston rod drives the connecting plate (11) to move downward. The connecting plate (11) drives the pressing plate (12) to move downward. The U-shaped groove (13) of the pressing plate (12) is sleeved on the outside of the housing (1) and just presses on the top surface of the annular table (5). Under the pressure of the pressure plate (12), the annular table (5) drives the housing (1) of the wiring harness end to move downward, and the housing (1) drives the conductive column (3), the elliptical cylinder (2) and the two wiring heads (4) to move downward synchronously, and the elliptical cylinder (2) drives the positioning seat (17) to move downward along the rod (14) relative to the stationary sealing gasket (6), and the positioning seat (17) drives the support seat (16) to move downward synchronously along the rod (14), and the support seat (16) compresses the spring (20) downward, and at the same time, the two wiring heads (4) move toward the two through holes (7) of the sealing gasket (6) respectively; when the piston rod of the pressing cylinder (10) extends to a set distance, the two wiring heads (4) are just inserted into the two through holes (7) of the sealing gasket (6) respectively, and finally a sealing gasket (6) is assembled on the wiring harness end; S4. Removal of the wire harness end equipped with the sealing gasket (6): After maintaining the pressure for 3 to 5 seconds, the piston rod of the pressing cylinder (10) is retracted upward, and the piston rod drives the pressure plate (12) to move upward. At the same time, under the restoring force of the spring (20), the positioning seat (17) and the support seat (16) both move upward along the rod (14) until the pin shaft (19) in the support seat (16) is blocked by the top wall of the strip groove (15); S5. The worker repeats the operations of steps S1 to S4 to continuously assemble a sealing gasket (6) on multiple wire harness ends.