Sputum suction device for reducing vacuum residue and manufacturing process

Abstract

The present invention belongs to the technical field of medical equipment, and specifically relates to a sputum suction device for reducing vacuum residue and a manufacturing process. The present invention provides a sputum suction device for reducing vacuum residue, comprising a negative pressure tube tightly connected to the negative pressure port on the main body, the sputum suction port of the main body tightly connected to the sputum suction tube, a first air cavity and a third air cavity are provided inside the main body, one end of the third air cavity is a negative pressure port, the other end of the third air cavity is a manual control port, the blind end of the first air cavity and the middle of the third air cavity are connected and converged with each other, and the first air cavity and the third air cavity are provided with a valve that can be connected and sealed at any time. The present invention has a simple structure, is easy to operate, and has stable performance, and effectively achieves the purpose of protecting the patient's respiratory tract from being harmed. The present invention can not only fully ensure that the vacuum residue of the sputum suction tube is less than 0.33kpa, but also achieve the goal of close to zero vacuum residue.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical equipment, and in particular relates to a sputum suction device for reducing vacuum residue and a manufacturing process thereof. Background Art

[0002] Suctioning is a treatment method that involves forced suctioning of the injured after routine suctioning, endotracheal intubation or tracheotomy. In hospital treatment, patients with pneumonia and bronchitis are more common. The patient's trachea is often blocked by sputum. If it is not removed in time, it will affect the patient's normal breathing, and in severe cases, it may even be life-threatening.

[0003] like Figure 1-5 As shown, the sputum suction device currently used in the prior art includes a body (3) for controlling the sputum suction of a patient, wherein a first air cavity (6), a second air cavity (7) and a third air cavity (8) are provided inside the body (3), wherein the first air cavity (6) and the second air cavity (7) are arranged in parallel and converge at the end to be connected with one end of the third air cavity (8), wherein the negative pressure port (5) at the other end of the third air cavity (8) is tightly connected to the negative pressure tube in the negative pressure device, and the second air cavity (7) port at the other end of the body (3) is tightly connected to the sputum suction tube (1), and a manual control port (2) is provided at the first air cavity (6) port at the other end of the body (3), wherein the thumb of the medical staff is placed on the manual control port (2), and lifting and pressing the port can function as a manual switch, thereby realizing the control of the sputum suction tube (1) to perform sputum suction on the patient and stop sputum suction.

[0004] However, in the above-mentioned prior art, when suctioning sputum with the suction tube (1), there are problems such as a large vacuum residual value and the difficulty in controlling the vacuum residual value to meet the requirements of the specification. According to the provisions of the industry specification YY0339, the vacuum residual of the suction tube (1) should be less than 0.33kPa. If the vacuum residual of the suction tube (1) is greater than 0.33kPa, the patient's respiratory epidermis may be ruptured, causing damage to the patient's respiratory epidermis. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides a sputum suction device and a manufacturing process for reducing vacuum residue. The sputum suction device is configured by arranging a first air cavity and a third air cavity side by side inside the main body, with the negative pressure port and the manual control port on the third air cavity being in the same straight line, and a valve being arranged at the convergence position where the first air cavity and the third air cavity are connected. During the sputum suction process, the vacuum residue in the sputum suction tube is effectively reduced and controlled, and the technical effect of zero vacuum residue is often achieved, thereby effectively reducing the damage to the patient's respiratory epidermis.

[0006] To achieve the above-mentioned purpose of the invention, the present invention provides a suction device for reducing vacuum residue, comprising a negative pressure tube tightly connected to the negative pressure port on the main body, the suction port of the main body being tightly connected to the suction tube, and characterized in that a first air cavity and a third air cavity parallel to each other are provided inside the main body, one end of the third air cavity is a negative pressure port, and the other end of the third air cavity is an obliquely arranged manual control port, the blind ends of the first air cavity converge in the middle of the third air cavity and are connected to each other, and the first air cavity and the third air cavity are provided with a valve at the convergence position that is controlled by a manual control port to open and close at any time.

[0007] The preferred technical solution is that the valve is a sealing plate, and a connecting part is provided at the bottom of the sealing plate, and the connecting part is fixedly connected to the partition between the first air cavity and the third air cavity. The sealing plate is opened and closed with the bottom of the connecting part as the axis. When suctioning, the finger presses the manual control port on the third air cavity, and the negative pressure opens the upper part of the sealing plate for suction. When the finger is released from the manual control port on the third air cavity, the negative pressure presses the sealing plate to close and stop suctioning.

[0008] A preferred technical solution is that the main body includes a first split body and a second split body that are sealed and docked with each other in a stepped structure, the cross-section of the third air cavity is a D-shaped structure, and a vent is provided on the flat surface of the D-shaped structure, and the vent is provided with a valve that can completely cover the vent, and the flat surface is also provided with a mounting hole and a protrusion on the valve for fixed installation.

[0009] According to a preferred technical solution, the sealing plate is a diaphragm made of a soft material, a bending body is provided at the bottom of the diaphragm, and a connecting portion provided on the lower side of the bending body is fixedly connected to the partition between the first air cavity and the third air cavity through a snap joint.

[0010] According to a preferred technical solution, the sealing plate is a baffle made of a hard material, a rotating portion is provided at the bottom of the baffle, and the rotating portion rotates about an axis.

[0011] According to a preferred technical solution, a through hole is provided on the main body, and the through hole is used to insert the plug-in. The through hole and the plug-in structure correspond to each other and are sealed after insertion.

[0012] The preferred technical solution is that a horizontal baffle is provided at the bottom of the baffle, and an angle is provided between the baffle and the horizontal baffle, and the angle range of the angle is 0°. <b<180°。

[0013] According to a preferred technical solution, the angle range of the included angle is between 60°≦b≦135°.

[0014] According to a preferred technical solution, the cross section of the bent body is an I-shaped structure with both sides concave toward the middle.

[0015] The present invention also provides a manufacturing process for a sputum suction device capable of reducing vacuum residue, the manufacturing process comprising the following steps:

[0016] Step 1) selecting a hot-melt polypropylene material as a casting material, and then selecting two injection molding machines to respectively mold the main body and the plug-in;

[0017] Step 2) Select one of the injection molding machines to produce the plug-in, and keep the produced plug-in for future use;

[0018] Step 3) Another injection molding machine is selected to produce the body, wherein a workbench of the injection molding machine is equipped with a left and right separated double-opening mold, a left mold and a right mold are fixedly installed on the workbench of the left and right separated double-opening mold, and a shaping mold corresponding to the through-hole structure is fixedly installed at the oblique shoulder position of the left mold;

[0019] Step 3) Fixing the first ferrule, the second ferrule, and the third ferrule for support between the left mold and the right mold;

[0020] Step 4) On the injection molding machine, the left mold and the right mold are closed and heated to maintain heat. When the heat preservation temperature reaches 75° to 80°, the left mold and the right mold are opened, and a mold release agent is evenly sprayed on the inner cavity of the left mold and the right mold and the outer surfaces of the first, second, and third ferrules, and then the left mold and the right mold are closed again;

[0021] Step 5) injecting the polypropylene raw material through the injection nozzle of the injection molding machine under pressure, and the temperature of the injected polypropylene is 220° to 275°;

[0022] Step 6) After injection, the body of the left and right mold cavities is quickly cooled and then kept warm at a temperature of 75° to 80° for 1-3 minutes for molding;

[0023] Step 7) After forming, the first and second ferrules are removed, the left and right molds are opened, the molding die on the left mold is removed, and the spare plug produced in step 2) is inserted into the through hole. The left and right molds are then closed, and the plug installed in the through hole of the body is sealed by hot melt at a temperature of 100°C for 5 seconds.

[0024] Step 8) Then open the left and right molds and take out the molded body.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The invention has a simple structure, is easy to operate, and effectively protects the patient's respiratory tract from being harmed;

[0027] 2. The present invention has stable performance and can not only fully ensure that the vacuum residue of the sputum suction tube is less than 0.33kPa, but can even achieve the goal of the vacuum residue being close to zero. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is the main view of the external structure of the prior art;

[0029] Figure 2 yes Figure 1 A top view of

[0030] Figure 3 yes Figure 1 Bottom view of

[0031] Figure 4 yes Figure 1 Cross-sectional view along the AA axis;

[0032] Figure 5 yes Figure 2 Cross-sectional view along the BB direction;

[0033] Figure 6 is a three-dimensional structural diagram of Example 1 of the present invention;

[0034] Figure 7 yes Figure 6 Cross-sectional view of the split structure:

[0035] Figure 8 is another structural cross-sectional view of Example 1 of the present invention;

[0036] Figure 9 yes Figure 8 A local enlarged view of A1 in the middle;

[0037] Figure 10 is another structural cross-sectional view of Example 1 of the present invention;

[0038] Figure 11 yes Figure 10 A partial enlarged view of A2 in the middle;

[0039] Figure 12 is another structural cross-sectional view of Example 1 of the present invention;

[0040] Figure 13 yes Figure 12 A magnified view of the structure at A3 in the middle;

[0041] Figure 14 yes Figure 13 Structural diagram of the middle F direction;

[0042] Figure 15 is a cross-sectional view of the structure of Example 2 of the present invention;

[0043] Figure 16 yes Figure 15 A partial enlarged view of the A4 area;

[0044] Figure 17 is another structural cross-sectional view of Example 2 of the present invention;

[0045] Figure 18 yes Figure 17 A partial enlarged view of point C in the middle;

[0046] Figure 19 It is a structural diagram of the main body and mold in the present invention.

[0047] Reference numerals

[0048] In the figure, 1 is the suction tube; 2 is the inclined plane; 3 is the main body, 31 is the first split body, 32 is the second split body; 4 is the plug-in unit, 41 is the through hole, 42 is the stepped bayonet; 5 is the negative pressure port; 6 is the first air cavity; 7 is the second air cavity; 8 is the third air cavity; 9 is the valve, 91 is the sealing plate, 92 is the connecting part, 93 is the bending body, 94 is the card joint, 95 is the horizontal baffle; 10 is the vent; 11 is the rotating part; 12 is the rotating shaft; 13 is the axis; M1 is the left mold; M2 is the first plug; M3 is the right mold; M4 is the second plug; M5 is the injection nozzle; M6 is the third plug; M7 is the molding mold; b is the angle, and the arrow indicates the direction of the negative pressure. DETAILED DESCRIPTION

[0049] Specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0050] Example 1

[0051] like Figure 6-12As shown, the present invention provides a sputum suction device for reducing vacuum residue, comprising a body 3 made of ABS material, which is a hot-melt polypropylene material. The negative pressure port 5 on the body 3 is tightly connected to the negative pressure tube, which is connected to an external negative pressure device to provide a negative pressure source for the patient to suction sputum. The sputum suction port on the body 3 is tightly connected to the sputum suction tube 1. The body 3 is internally provided with a first air cavity 6 and a third air cavity 8. The first air cavity 6 and the third air cavity 8 are arranged in parallel. The third air cavity 8 is a straight line with two ends connected. One end of the third air cavity 8 is the negative pressure port 5, and the other end of the third air cavity 8 is obliquely provided with a manual port 2. In this embodiment, in order to reduce resistance, the negative pressure port 5 and the manual port 2 are straight tube structures arranged on the same line. The blind ends of the first air cavity 6 converge at the middle of the third air cavity 8 and are connected to each other. The first air cavity 6 and the third air cavity 8 are provided with a valve 9 at the convergence position, which can be controlled by the manual port 2 to open and close at any time. The preferred structure is that, in order to smoothly suction sputum, the cross-section of the first air cavity 6 is equal to the area of ​​the cross-section of the third air cavity 8 at the convergence position. In this embodiment, the converging cross-section is a rectangular structure, and the first air cavity 6 and the third air cavity 8 are cylindrical structures. In this embodiment, the valve 9 is a sealing plate 91, and a connecting portion 92 is provided at the bottom of the sealing plate 91. The connecting portion 92 is fixedly connected to the partition between the first air cavity 6 and the third air cavity 8. The sealing plate 91 is opened and closed with the bottom of the connecting portion 92 as the axis. When suctioning sputum, the finger presses the manual control port on the third air cavity 8, and the negative pressure opens the upper part of the sealing plate 91 for suctioning. When the finger is released from the manual control port on the third air cavity 8, the negative pressure presses the sealing plate 91 to close and stop suctioning. This embodiment also provides an implementation method: the valve 9 is designed to be a sealing plate 91 structure, and the sealing plate 91 is made of PVC material. The diaphragm is made of PVC soft material. A bending body 93 is provided at the bottom of the diaphragm. A connecting portion 92 is provided on the lower side of the bending body 93 and is fixedly connected to the partition between the first air cavity 6 and the third air cavity 8 through a clamping joint 94. The bottom connecting portion 92 of the diaphragm is fixedly bonded to the partition between the first air cavity 6 and the third air cavity 8. When the medical staff's thumb is placed on the inclined surface of the manual port 2 to close the port of the third air cavity 8, under the action of negative pressure, the upper part of the diaphragm is quickly opened to suction sputum. When the medical staff's thumb is opened from the manual port 2, the third air cavity 8 is connected to the outside world. Under the action of negative pressure, the upper part of the diaphragm is quickly closed, and the first air cavity 6 and the third air cavity 8 are quickly sealed and separated from each other, which quickly stops suctioning sputum and reduces vacuum residue.

[0052] like Figure 12 and 14 As shown, in order to make the bottom of the diaphragm bond more firmly and prevent the diaphragm from falling off, a clamping joint 94 made of elastic material is provided at the bottom of the diaphragm, and the clamping joint 94 can be pressed into the slot on the side wall between the first air cavity 6 and the third air cavity 8.

[0053] like Figure 6 and 7 As shown, in this embodiment, in order to simplify the process and make production easier to implement, this embodiment also provides another structure: the main body 3 includes a first sub-body 31 and a second sub-body 32 that are sealed and docked with each other in a stepped structure. The cross-section of the third air cavity 8 is a D-shaped structure. A vent 10 is provided on the flat surface of the D-shaped structure. The vent 10 can be a circular hole, an elliptical hole or a square hole. In this embodiment, the vent 10 selected is a rectangular hole. The valve 9 corresponds to the structure of the rectangular hole. The valve 9 uses a diaphragm made of soft silicone material. The diaphragm can cover the vent 10 completely, that is, the area of ​​the vent 10 is smaller than the area covered by the valve 9. A mounting hole is also provided on the flat surface and fixedly installed with protrusions provided on the upper and lower sides of the valve 9 to play a role in positioning and preventing deviation. The mounting hole can be a through hole or a blind hole (not shown in the figure).

[0054] In this embodiment, the port of the third air cavity 8 of the main body 3 is the manual control port 2. In order to increase the area of ​​the manual control port 2, the manual control port 2 is set to an inclined structure. The medical staff's thumb is placed on the inclined surface of the manual control port 2, which can be easily lifted and pressed, playing the role of a quick manual switch, enabling the suction tube 1 to suction and stop the patient, thereby achieving the purpose of reducing vacuum residue.

[0055] This embodiment also provides another implementation method: for the convenience of installation and simpler process structure, such as Figure 11 and 14 As shown, the body 3 is further provided with a through hole 41, and an insert 4 is arranged in the position of the through hole 4. The insert 4 and the through hole 41 correspond to each other in structure. The through hole 41 is used to insert the insert 4, and the insert 4 and the through hole 41 are sealed after being plugged in. In order to prevent the insert 4 from being mispositioned and being inserted too far into the through hole 41, a stepped structure is provided on the outside of the insert 4.

[0056] In this embodiment, in order to reduce the complexity of the process and facilitate installation, the plug-in 4 and the valve 9 are provided as a diaphragm made of soft material and are set as an integral structure. After the plug-in 4 with the diaphragm provided with the connecting portion 92 is plugged into the through hole 41, the plug-in 4 and the through hole 41 are sealed.

[0057] Example 2

[0058] This embodiment is improved on the basis of embodiment 1, and other structures are the same, except that: Figure 15-18 As shown, this embodiment provides a sputum suction device for reducing vacuum residue, the valve 9 is configured as a sealing plate 91 made of hard material, the sealing plate 91 is a baffle structure, and the baffle structure is specifically provided with a rotating part 11 at the bottom of the baffle, and the rotating part 11 rotates about the axis 13.

[0059] In this embodiment, a transverse baffle 95 is provided at the bottom of the baffle of the sealing plate 91. An included angle b is provided between the baffle of the sealing plate 91 and the transverse baffle 95. The angle range of the included angle b is 0° < b < 180°. Preferably, the angle range of the included angle b is between 60° ≤ b ≤ 135°. More preferably, the specific angles of the included angle are 30°, 60°, 90°, 100°, 120°, and 135°. In this embodiment, the angle of the included angle b is 90° or 135°. When the thumb of a medical staff is placed on the inclined surface of the hand control port 2 for sealing, under the action of negative pressure, the upper part of the sealing plate 91 can be quickly opened, and the first air chamber 6 and the third air chamber 8 are connected to perform sputum suction. When the thumb of the medical staff is removed from the hand control port 2, due to the provision of the transverse baffle 95, the third air chamber 8 is connected to the outside. Under the action of negative pressure, the transverse baffle 95 can increase the closing speed of the sealing plate 91, quickly isolate and separate the first air chamber 6 and the third air chamber 8 from each other, play a role in quickly stopping sputum suction, and can reduce the vacuum residue. The preferred structure is that the area of the sealing plate 91 is at least the same as the cross-sectional area of the third air chamber 8 or the area of the sealing plate 91 is larger than the cross-sectional area of the third air chamber 8, so as to achieve the effect that the converging position is completely opened. Among the preferred structures, the area of the transverse baffle 95: the area of the sealing plate 91 is 1:2, so as to achieve the purpose of quickly connecting the first air chamber 6 and the third air chamber 8.

[0060] As Figure 11-14 and Figure 17 、 18 shown, in the preferred technical solution, the cross-section of the bending body 93 is an "I" - shaped structure with both sides concave inward towards the middle. The bending body 93 and the axis 13 are of the same structure. The thickness range at the middle position of the bending body 93 is 0.15 mm to 0.3 mm. In this embodiment, the thickness at the middle position of the bending body 93 is 0.2 mm. In the state of this thin wall, the bending body 93 not only plays a connecting role but also plays a role of a rotating shaft, and can also reduce the complexity of the production process.

[0061] The present invention also provides a manufacturing process for a sputum suction device for reducing vacuum residue. As Figure 19 shown, the manufacturing process includes the following steps:

[0062] Step 1) Select a polypropylene material with hot-melt property as the casting material, and then select two injection molding machines to separately perform molding production for the body 3 and the plug-in 4. In this embodiment, a standard vertical injection molding machine of model TW-V-C is selected;

[0063] Step 2) Select one of the injection molding machines to first perform the molding production of the plug-in 4, and reserve the produced plug-in 4;

[0064] Step 3) Select the other injection molding machine to perform the production of the body 3. As Figure 19As shown, the workbench of the injection molding machine is equipped with a left and right separated double-opening mold. On the workbench of the left and right separated double-opening mold, a left mold M1 and a right mold M1 are fixedly installed respectively. A shaping mold M7 corresponding to the structure of the through hole 41 is fixedly installed on the left mold M1.

[0065] Step 3) The first ferrule M2, the second ferrule M4 and the third ferrule M6 for support are fixedly installed between the left mold M1 and the right mold M1;

[0066] Step 4) On the injection molding machine, the left mold M1 and the right mold M1 are closed, and the left mold M1 and the right mold M1 are heated to maintain the temperature. When the temperature range is 70° to 80°, in this embodiment, the temperature is specifically 75°. The left mold M1 and the right mold M1 are opened, and a mold release agent is evenly sprayed on the inner cavity of the left mold M1 and the right mold M1 and the outer surfaces of the first ferrule M2, the second ferrule M4, and the third ferrule M6. Then, the left mold M1 and the right mold M1 are closed;

[0067] Step 5) The polypropylene raw material is injected under pressure from the injection nozzle M5 on the injection molding machine, and the temperature range of the injected polypropylene is 220° to 275°; in this embodiment, the temperature of the injected polypropylene is 235°;

[0068] Step 6) After injection, the body 3 in the inner cavity of the left mold M1 and the right mold M1 is quickly cooled and then kept warm. The holding temperature range is 75° to 80°. In this embodiment, the holding temperature is selected to be 75° and the holding time is 1-3 minutes for molding;

[0069] After step 7), the first ferrule M2 and the second ferrule M4 are pulled out respectively, the left mold M1 and the right mold M1 are opened, the molding mold M7 on the left mold M1 is removed, the spare plug 40 produced in step 2) is inserted and installed in the through hole 41, and then the left mold M1 and the right mold M1 are closed. The plug 4 installed in the through hole 41 of the body 3 is sealed by heat-melting at a temperature of 100° for 5 seconds. After the body 3 and the plug 4 are heat-melted and formed;

[0070] Step 8) Then open the left mold M1 and the right mold M1 and take out the molded body 3.

[0071] The preferred specific implementation modes and embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above implementation modes and embodiments. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the concept of the present invention.

Claims

1. A sputum suction device for reducing vacuum residue, comprising a negative pressure tube tightly connected to a negative pressure port (5) on a body (3), wherein the sputum suction port of the body (3) is tightly connected to the sputum suction tube (1), characterized in that: The body (3) is provided with a first air cavity (6) and a third air cavity (8) parallel to each other. One end of the third air cavity (8) is a negative pressure port (5), and the other end of the third air cavity (8) is an inclined manual control port (2). The blind ends of the first air cavity (6) converge at the middle of the third air cavity (8) and are connected to each other. The first air cavity (6) and the third air cavity (8) are provided with a valve (9) at the convergence position, which is controlled by the manual control port (2) to be opened and closed at any time. The valve (9) is a sealing plate (91). The sealing plate (91) is opened and closed with the bottom of the connecting portion (92) as the axis. The sealing plate (91) is a baffle made of hard material. A transverse baffle (95) is provided at the bottom of the baffle. An angle is provided between the baffle and the transverse baffle (95).

2. The sputum suction device for reducing vacuum residue according to claim 1, characterized in that: The bottom of the sealing plate (91) is provided with a connecting portion (92), and the connecting portion (92) is fixedly connected to the partition between the first air cavity (6) and the third air cavity (8). When suctioning, the finger presses the manual control port (2) on the third air cavity (8), and the negative pressure opens the upper part of the sealing plate (91) to suction. When the finger is released from the manual control port on the third air cavity (8), the negative pressure presses the sealing plate (91) to close and stop suctioning.

3. The sputum suction device for reducing vacuum residue according to claim 1, characterized in that: The body (3) comprises a first split body (31) and a second split body (32) which are sealed and docked with each other in a stepped structure. The cross section of the third air cavity (8) is a D-shaped structure. A vent hole (10) is provided on the flat surface of the D-shaped structure. A flap (9) capable of completely covering the vent hole (10) is provided on the flat surface. A mounting hole is also provided on the flat surface for fixing the vent hole with a protrusion on the flap (9).

4. The sputum suction device for reducing vacuum residue according to claim 2, characterized in that: The sealing plate (91) is a diaphragm made of a soft material, and a bending body (93) is provided at the bottom of the diaphragm. A connecting portion (92) provided on the lower side of the bending body (93) is fixedly connected to the partition between the first air cavity (6) and the third air cavity (8) through a clamping joint (94).

5. The sputum suction device for reducing vacuum residue according to claim 1, characterized in that: A rotating portion (11) is provided at the bottom of the baffle, and the rotating portion (11) rotates about an axis (13).

6. The sputum suction device for reducing vacuum residue according to claim 1, characterized in that: The body (3) is provided with a through hole (41), and the through hole (41) is used to insert the plug-in (4). The through hole (41) and the plug-in (4) correspond to each other in structure and are sealed after being plugged in.

7. The sputum suction device for reducing vacuum residue according to claim 1, characterized in that: The angle range of the angle is 0° <b<180°。 8. The sputum suction device for reducing vacuum residue according to claim 7, characterized in that: The angle range of the included angle is between 60°≦b≦135°.

9. The sputum suction device for reducing vacuum residue according to claim 4, characterized in that: The cross section of the bent body (93) is an "I"-shaped structure with both sides concave inward toward the middle.

10. A manufacturing process for the sputum suction device for reducing vacuum residue according to claims 8-9, characterized in that: The manufacturing process comprises the following steps: Step 1) selecting a polypropylene material with hot melt properties as a casting material, and then selecting two injection molding machines to respectively perform molding production on the main body (3) and the plug-in (4); Step 2) selecting one of the injection molding machines to produce the plug-in (4), and keeping the produced plug-in (4) for later use; Step 3) another injection molding machine is selected to produce the body (3), the workbench of the injection molding machine is equipped with a double-opening mold separated on the left and right, a left mold (M1) and a right mold (M1) are fixedly installed on the workbench of the double-opening mold separated on the left and right, and a shaping mold (M7) corresponding to the through hole (41) structure is fixedly installed on the left mold (M1); Step 3) The first ferrule (M2), the second ferrule (M4) and the third ferrule (M6) for support are fixedly installed between the left mold (M1) and the right mold (M1); Step 4) On the injection molding machine, the left mold (M1) and the right mold (M1) are closed, and the left mold (M1) and the right mold (M1) are heated to keep them warm. When the insulation temperature reaches 75° to 80°, the left mold (M1) and the right mold (M1) are opened, and a release agent is evenly sprayed on the inner cavities of the left mold (M1) and the right mold (M1) and the outer surfaces of the first ferrule (M2), the second ferrule (M4), and the third ferrule (M6), and then the left mold (M1) and the right mold (M1) are closed; Step 5) injecting the polypropylene raw material through the injection nozzle (M5) on the injection molding machine under pressure, and the temperature of the injected polypropylene is 220° to 275°; Step 6) After injection, the body (3) in the inner cavity of the left mold (M1) and the right mold (M2) is quickly cooled and then kept warm at a temperature of 75° to 80° for 1 to 3 minutes for molding; After step 7) molding, the first ferrule (M2) and the second ferrule (M4) are pulled out, the left mold (M1) and the right mold (M1) are opened, the molding mold (M7) on the left mold (M1) is removed, the spare plug-in (4) produced in step 2) is inserted and installed in the through hole (41), and then the left mold (M1) and the right mold (M1) are closed, and the plug-in (4) installed in the through hole (41) on the body (3) is hot-melt sealed, the hot-melt temperature is 100°, and the time is 5s; Step 8) Then open the left mold (M1) and the right mold (M1) and take out the formed body (3).

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