Injection molding equipment and processing technology for automotive electronic vacuum pump wiring harness

Abstract

The present application relates to an injection molding device and processing technology for an automotive electronic vacuum pump wiring harness, which includes an inner mold and an outer mold. The outer mold includes an upper mold and a lower mold. One side of the inner mold is connected to the upper mold, and the other side of the inner mold is connected to the lower mold. The inner mold is used to fix the wiring harness. The upper mold is connected to the lower mold. The upper mold and the lower mold together form an injection molding cavity. The injection molding cavity is used to wrap the outer periphery of the connection between the wire and the terminal placed therein with an insulating shell. The upper mold is provided with a passage opening, and the passage opening is connected to the injection molding cavity. The terminal is fixed by the inner mold, and the connection between the terminal and the wire placed in the injection molding cavity is injection molded. The wiring harness is not easy to shake, the injection molding accuracy is improved, and the processing quality of the wiring harness is improved.

Description

Technical Field

[0001] The present application relates to the field of automobile parts production, and in particular to an injection molding device and a processing technology for an automobile electronic vacuum pump wiring harness. Background Art

[0002] A wiring harness bridges two or more isolated electronic circuits, enabling the flow of current and the functions of various electronic components. It is an indispensable component in various electrical and electronic devices. A wiring harness is a component consisting of copper-stamped contact terminals crimped onto wires and cables, then covered with plastic-molded insulation or a metal casing to form a bundled connection.

[0003] The automotive wiring harness is the main network of the automotive circuit. Without the wiring harness, there is no automotive circuit. The electrical performance, material dispersion and temperature resistance required by the automotive wiring harness are higher than those of general wiring harnesses. In the prior art, there is a kind of automotive electronic vacuum pump wiring harness, such as Figure 1 As shown, the wiring harness 0 includes a connection terminal 01 , a wire 02 and an insulating shell 03 . The connection terminal 01 is connected to the wire 02 , and the insulating shell 03 is wrapped around the connection between the connection terminal 01 and the wire 02 .

[0004] Injection molding is the process of creating a semi-finished part of a specific shape by pressurizing, injecting, cooling, and separating molten raw materials. Insulation shell 03 is wrapped around terminal block 01 and wire 02 through the injection molding process. During the injection molding process, wire 02 and terminal block 01 need to be placed in a designated area of ​​the injection molding cavity.

[0005] However, the existing injection mold cannot fix the terminal blocks. When the injection liquid enters the injection cavity, it impacts the wiring harness due to its high speed, causing the wiring harness to shake easily, resulting in reduced injection molding accuracy. The part of the terminal block exposed from the insulating shell is prone to uneven length, resulting in reduced processing quality of the wiring harness. Summary of the Invention

[0006] In order to improve the processing quality of the wiring harness, the present application provides an injection molding device and a processing technology for an automotive electronic vacuum pump wiring harness.

[0007] In the first aspect, the present application provides an injection molding device for an automotive electronic vacuum pump wiring harness that adopts the following technical solution:

[0008] An injection molding device for an automotive electronic vacuum pump wiring harness includes an inner mold and an outer mold. The outer mold includes an upper mold and a lower mold. One side of the inner mold is connected to the upper mold, and the other side of the inner mold is connected to the lower mold. The inner mold is used to fix the wiring harness. The upper mold is connected to the lower mold. The upper mold and the lower mold together form an injection molding cavity. The injection molding cavity is used to wrap an insulating shell around the periphery of the connection between the wire placed therein and the terminal. The upper mold is provided with a passage opening, and the passage opening is connected to the injection molding cavity.

[0009] By adopting the above technical solution, the wiring terminals are fixed through the inner mold, and the connection between the wiring terminals and the wires placed in the injection molding cavity is injection molded. The wiring harness is not easy to shake, the injection molding accuracy is improved, and the processing quality of the wiring harness is improved.

[0010] Preferably, a positioning groove is provided at the upper end of the lower mold, and the inner mold is embedded in the positioning groove.

[0011] By adopting the above technical solution, after the wiring harness is fixed on the inner mold, the inner mold together with the wiring harness needs to be placed in the outer mold for injection molding. The positioning groove makes it easy to place the inner mold in the correct position, thereby improving the processing efficiency of the wiring harness.

[0012] Preferably, a positioning column is connected to the bottom of the positioning groove, the inner mold is provided with a positioning hole, and the positioning column is connected to the inner wall of the positioning hole.

[0013] By adopting the above technical solution, after the positioning groove preliminarily positions the installation position of the inner mold in one direction, the positioning column further positions the installation position of the inner mold, which facilitates the installation of the inner mold in the correct position, improves the processing efficiency of the wire harness, and thus enables the wire harness to be installed in the correct position, thereby improving the processing quality of the wire harness.

[0014] Preferably, the inner mold includes a positioning block and a clamping piece, the lower end of the positioning block is connected to the lower mold, the upper end of the positioning block is provided with a placement groove, the clamping piece is embedded in the placement groove, the outer wall of the positioning block is provided with a connecting hole, the connecting hole is connected to the placement groove, the connecting hole is used for embedding the wiring terminal, and the clamping piece is used to clamp the wiring terminal.

[0015] By adopting the above technical solution, the wiring terminal is embedded in the connecting hole and fixed by the clamping piece in the placement groove. The operation is simple and the injection molding liquid is not easy to enter the placement groove from the connecting hole, thereby improving the processing weight of the wiring harness.

[0016] Preferably, the clamping member includes a fixed block and a spring sheet, the fixed block is embedded in the placement groove, two spring sheets are provided, both of the spring sheets are connected to the fixed block, the distance between the two spring sheets decreases as they move away from the fixed block, and the two spring sheets are used to clamp the terminal.

[0017] By adopting the above technical solution, the fixing block is fixed, and the wire harness is clamped by moving the two spring pieces closer to each other, which is easy to operate and improves the processing efficiency and quality of the wire harness.

[0018] Preferably, one end of the elastic sheet away from the fixed block is connected to a guide sheet, and the distance between the two guide sheets increases as they move away from the elastic sheet.

[0019] By adopting the above technical solution, the guide piece facilitates the terminal to extend between the two spring pieces, so that the two spring pieces can clamp the terminal together, which is easy to operate, saves the time of installing the terminal on the inner mold, and improves the processing efficiency of the wire harness.

[0020] Preferably, the inner mold further includes a limiting rod, the limiting rod is connected to the positioning block, the limiting rod is arranged on the outer periphery of the outer mold, and the limiting rod is provided with a limiting groove, and the limiting groove is used for embedding the wire.

[0021] By adopting the above technical solution, the connecting hole positions the terminal block, the clamping piece fixes the terminal block, and the limiting groove positions the wire, so that the wire harness is accurately fixed in the outer mold, is not prone to shaking during the injection molding process, and the processing quality of the wire harness is improved. During the injection molding process, one end of the wire harness is fixed by the clamping piece, and the longer part of the other end extends out of the injection molding cavity without support. Affected by the center of gravity of the wire harness, one end of the terminal block tends to rotate upward, and the wire harness is limited by the connecting hole and cannot rotate, resulting in the positioning block bearing the upward force of the wire harness for a long time, and the inner mold is prone to damage. The limiting rod supports the wire, adjusts the center of gravity of the wire, and protects the inner mold.

[0022] Preferably, the inner mold includes a handle, which is connected to the end of the fixed block and is used for being held by hand.

[0023] By adopting the above technical solution, the inner mold includes a handle, which makes it easy for operators to use and improves processing efficiency.

[0024] In a second aspect, the present application provides a processing technology for an automotive electronic vacuum pump wiring harness using the following technical solution:

[0025] A processing technology for an automotive electronic vacuum pump wiring harness comprises the following steps:

[0026] Assemble and fix the wiring harness to the inner mold;

[0027] Injection molding, placing the inner mold together with the wiring harness on the outer mold for one injection molding;

[0028] Remolding: transferring the wire harness after one injection molding to another mold for secondary injection molding;

[0029] Trimming: take out the formed wire harness and cut off the excess part.

[0030] By adopting the above technical solution, when the automotive electronic vacuum pump is in a high temperature state, the insulating shell and the metal expand and contract due to heat. Due to the different thermal expansion coefficients of plastic and metal, the insulating shell is prone to produce gaps between the terminals, causing problems with the airtightness and waterproofness of the vacuum pump, which can easily cause safety accidents. The insulating shell undergoes secondary injection molding, which enhances the structural strength of the insulating shell and the terminals and extends the service life of the wiring harness.

[0031] In summary, this application includes at least one of the following beneficial technical effects:

[0032] 1. Fix the wiring terminals through the inner mold, and then perform injection molding on the connection between the wiring terminals and the wires placed in the injection molding cavity. This will prevent the wiring harness from shaking, improve the injection molding accuracy, and improve the processing quality of the wiring harness.

[0033] 2. The guide piece facilitates the insertion of the terminal block between the two springs, so that the two springs can clamp the terminal block together. This makes the operation easier, saves time in installing the terminal block on the inner mold, and improves the processing efficiency of the wiring harness.

[0034] 3. When the automotive electronic vacuum pump is at a high temperature, the insulating shell and the metal expand and contract due to thermal expansion. Due to the different thermal expansion coefficients of plastic and metal, the insulating shell is prone to produce gaps between the terminals, causing problems with the airtightness and waterproofness of the vacuum pump, which can easily cause safety accidents. The insulating shell undergoes secondary injection molding to enhance the structural strength of the insulating shell and the terminals, thereby extending the service life of the wiring harness. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the overall structure of the wiring harness.

[0036] Figure 2 The diagram is a schematic diagram of the overall structure of an injection molding device for an automotive electronic vacuum pump wiring harness.

[0037] Figure 3 This is an exploded view of the inner mold and lower mold.

[0038] Figure 4 It is a schematic diagram of the overall structure of the upper mold.

[0039] Figure 5 This is the exploded view of the inner mold.

[0040] Figure 6 yes Figure 5 Enlarged view of point A in the middle.

[0041] Explanation of reference numerals: 0, wiring harness; 01, terminal block; 02, wire; 03, insulating shell; 1, inner mold; 11, positioning block; 111, positioning hole; 112, first guide groove; 113, placement groove; 1131, fixing groove; 1132, through-hole; 1133, first fixing hole; 114, connecting hole; 115, embedding groove; 12, clamping member; 121, fixing block; 122, spring piece; 123, guide piece; 13, abutting block; 131, second fixing hole; 14, limiting rod; 141, longitudinal rod; 142, transverse rod; 1421, limiting groove; 15, handle; 2, outer mold; 21, upper mold; 211, installation Groove; 212, second molding groove; 213, guide hole; 214, second groove; 215, bump; 2151, third guide groove; 216, fourth guide groove; 217, channel opening; 22, lower mold; 221, main body; 2211, positioning groove; 2212, first molding groove; 2213, first groove; 2214, positioning column; 2215, second guide groove; 2216, ejection port; 2217, accommodating cavity; 2218, driving hole; 222, ejector; 2221, support plate; 2222, ejector rod; 223, connecting column; 23, injection cavity; 24, first guide hole; 25, second guide hole. DETAILED DESCRIPTION

[0042] The following is combined with Figure 2-6 This application is described in further detail.

[0043] The embodiment of the present application discloses an injection molding device for automotive electronic vacuum pump wiring harness. Figure 2 The secondary injection molding equipment of the automotive electronic vacuum pump wiring harness includes an inner mold 1 and an outer mold 2, and the outer mold 2 includes an upper mold 21 and a lower mold 22.

[0044] Reference Figure 3 and Figure 4The lower mold 22 includes a main body 221 and a stripper 222. A positioning groove 2211 is provided at the upper end of the main body 221, and the positioning groove 2211 penetrates the main body 221 along the length direction of the main body 221. A mounting groove 211 is provided at the lower end of the upper mold 21, and the mounting groove 211 penetrates the upper mold 21 along the length direction of the main body 221. A first molding groove 2212 is provided at the upper end of the main body 221, and the first molding groove 2212 is connected to the positioning groove 2211. There are four first molding grooves 2212, and the four first molding grooves 2212 are respectively arranged on both sides of the positioning groove 2211 and symmetrically arranged about the symmetry axis of the positioning groove 2211. A second molding groove 212 is provided at the lower end of the upper mold 21, and the second molding groove 212 is connected to the mounting groove 211. There are four second molding grooves 212, and the four second molding grooves 212 are respectively arranged on both sides of the mounting groove 211 and symmetrically arranged about the symmetry axis of the mounting groove 211. Connecting posts 223 are connected to the four corners of the upper end of the main body 221. Guide holes 213 are provided at the four corners of the lower end of the upper mold 21. The guide holes 213 are used to insert the connecting posts 223 in a one-to-one correspondence. When the lower end of the upper mold 21 is attached to the upper end of the main body 221, the second molding groove 212 and the first molding groove 2212 form an injection cavity 23. The injection cavity 23 is used to wrap the insulating shell around the connection between the wire placed therein and the terminal. The four first molding grooves 2212 are each provided with two first grooves 2213 on the groove wall facing the positioning groove 2211. The four second molding grooves 212 are each provided with two second grooves 214 on the groove wall facing the installation groove 211. When the lower end of the upper mold 21 is attached to the upper end of the main body 221, the first grooves 2213 and the second grooves 214 are arranged opposite each other and are both used to insert the wires.

[0045] Reference Figure 5 The inner mold 1 includes a positioning block 11, a clamping member 12, an abutting block 13, a limiting rod 14 and a handle 15.

[0046] Reference Figure 3 and Figure 4 The lower end of the positioning block 11 is embedded in the positioning groove 2211, and the upper end of the positioning block 11 is embedded in the mounting groove 211. The length of the positioning block 11 is greater than the length of the positioning groove 2211. The positioning block 11 is provided with a positioning hole 111. The positioning hole 111 is located on the symmetry axis of the positioning block 11 and vertically penetrates the positioning block 11. The bottom of the positioning groove 2211 is connected to a positioning column 2214. The outer periphery of the positioning column 2214 is connected to the inner wall of the positioning hole 111. The bottom of the mounting groove 211 is connected to a protrusion 215. The end of the protrusion 215 facing away from the bottom of the mounting groove 211 abuts against the positioning column 2214 and the upper end of the positioning block 11.

[0047] The upper end of the positioning block 11 is provided with a first guide groove 112, which extends along the width of the positioning block 11 and is connected to the positioning hole 111. The upper end of the main body 221 is provided with a second guide groove 2215, one end of which is connected to the first guide groove 112, and the other end of which is connected to the first molding groove 2212. The lower end of the protrusion 215 is provided with a third guide groove 2151, and the lower end of the upper mold 21 is provided with a fourth guide groove 216, one end of which is connected to the third guide groove 2151, and the other end of which is connected to the second molding groove 212. When the lower end of the upper mold 21 is attached to the upper end of the main body 221, the first guide groove 112 and the third guide groove 2151 are arranged opposite each other, and the second guide groove 2215 and the fourth guide groove 216 are arranged opposite each other. The first guide groove 112 and the third guide groove 2151 together form the first guide hole 24, and the second guide groove 2215 and the fourth guide groove 216 together form the second guide hole 25. The upper mold 21 is provided with a channel opening 217, which extends through the upper mold 21 along the height direction of the upper mold 21. The channel opening 217 is coaxial with the positioning column 2214 and is connected to the first guide hole 24.

[0048] Reference Figure 3 The bottom of the positioning groove 2211 is provided with two ejection openings 2216. Along the length direction of the positioning groove 2211, the two ejection openings 2216 are symmetrically arranged on both sides of the positioning column 2214. The bottoms of the four first forming grooves 2212 and the two second guide grooves 2215 are all provided with ejection openings 2216. The positioning column 2214 is coaxially provided with ejection openings 2216. The main body 221 is provided with a accommodating cavity 2217. The lower end of the main body 221 is provided with a driving hole 2218. The driving hole 2218 and the ejection hole are both connected to the accommodating cavity 2217. The driving hole 2218 is coaxially arranged with the positioning column 2214. The material stripping piece 222 includes a support plate 2221 and a material stripping rod 2222. The support plate 2221 is arranged in the accommodating cavity 2217. The material stripping rod 2222 is fixedly connected to the upper end of the support plate 2221. The material stripping rod 2222 is slidably connected to the inner wall of the top material port 2216. The sliding direction of the material stripping rod 2222 is vertical. The driving cylinder passes through the driving hole 2218 and is connected to the lower end of the support plate 2221. The driving cylinder drives the support plate 2221 to move up and down, so that the material stripping rod 2222 separates the processed wiring harness and the inner mold 1 from the main body 221.

[0049] Reference Figure 5 and Figure 6The clamping member 12 includes a fixing block 121, a spring piece 122, and a guide piece 123. Two placement slots 113 are provided at the upper end of the positioning block 11. The two placement slots 113 are symmetrically arranged about the symmetry axis of the positioning block 11. The bottom of the placement slot 113 is provided with a fixing slot 1131. There are four fixing slots 1131. The slot wall of the fixing slot 1131 is provided with a through-hole 1132. The outer wall of the positioning block 11 facing the first forming slot 2212 is provided with a connecting hole 114. There are eight connecting holes 114. The eight connecting holes 114 are provided on both sides of the fixing block 121. The connecting holes 114 are used to connect the first forming slot 2212 and the placement slot 113. The through-holes 1132 are arranged opposite to the connecting holes 114 and correspond one to one. The fixing block 121 is embedded in the fixing groove 1131. The height of the fixing block 121 is equal to the depth of the fixing groove 1131. The spring piece 122 passes through the through-hole 1132 and is fixedly connected to the end of the fixing block 121 facing the connecting hole 114. One fixing block 121 is connected to two spring pieces 122. The distance between the two spring pieces 122 decreases as they move away from the fixing block 121. The two spring pieces 122 are used to clamp the terminal blocks. The guide piece 123 is fixedly connected to the end of the spring piece 122 away from the fixed block 121. The distance between the two guide pieces 123 increases as they move away from the fixed block 121. The two guide pieces 123 are used to facilitate the terminal blocks to extend between the two spring pieces 122. The abutment block 13 is embedded in the placement groove 113, and the upper end of the abutment block 13 is flush with the upper end surface of the positioning block 11. The bottom of the placement groove 113 is provided with a first fixing hole 1133, and the abutment block 13 is provided with a second fixing hole 131. The inner diameter of the second fixing hole 131 increases with the increase of the height. The screw passes through the second fixing hole 131 and is threadedly connected to the first fixing hole 1133 for fixation.

[0050] Reference Figure 2 and Figure 5 Both sides of the positioning block 11 are provided with a recess 115, located on the outer periphery of the outer mold 2. A limiting rod 14 is provided on the outer periphery of the outer mold 2 and comprises a longitudinal rod 141 and a transverse rod 142. Two longitudinal rods 141 are provided, with the longitudinal rods 141 extending parallel to the width of the main body 221, while the transverse rods 142 extend parallel to the length of the main body 221. Both ends of the transverse rod 142 are fixedly connected to one end of the longitudinal rod 141, while the other end of the longitudinal rod 141 is embedded in the recess 115. Four limiting grooves 1421 are provided at the upper end of the transverse rod 142, spaced apart along the length of the transverse rod 142. These grooves 1421 are used to accommodate wires. The two ends of the positioning block 11 are fixedly connected to two handles 15, respectively, which are used for handholding.

[0051] The implementation principle of the injection molding equipment of the automotive electronic vacuum pump wiring harness in the embodiment of the present application is as follows: the wiring terminal is extended from the connecting hole 114 into the placement groove 113, the guide piece 123 guides the wiring terminal, the wiring terminal is extended between the two spring pieces 122 and clamped, the positioning hole 111 is aligned with the positioning column 2214, the positioning block 11 is embedded in the positioning groove 2211 for placement, the wire is embedded in the first groove 2213 and the limit groove 1421 for fixation, the connecting column 223 is extended into the guide hole 213, the upper mold 21 and the lower mold 22 are fitted together, and the injection liquid flows into the injection cavity 23 through the channel opening 217, the first guide hole 24 and the second guide hole 25 in sequence to inject the connection between the wiring terminal and the wire. After the injection molding is completed, the upper mold 21 is removed, the support plate 2221 is driven to move upward, and the ejector rod 2222 lifts the positioning block 11 and the wiring harness to achieve separation from the lower mold 22.

[0052] The present application also discloses a process for processing an automotive electronic vacuum pump wiring harness, comprising the following steps:

[0053] Assemble and fix the wiring harness on the inner mold 1;

[0054] Injection molding: Place the inner mold 1 together with the wiring harness on the outer mold 2 for one injection molding. After the injection molding is completed, remove the material and trim it.

[0055] Remolding: fix the wire harness after one injection molding on another inner mold, and place the other inner mold together with the wire harness on another mold for secondary injection molding;

[0056] Trimming: take out the formed wire harness and cut off the excess part.

[0057] The implementation principle of the processing technology of an automotive electronic vacuum pump wiring harness in an embodiment of the present application is: fixing the terminal block on the inner mold 1, placing the inner mold 1 on the outer mold 2 for a first injection molding process, and after the processing is completed, taking out the wiring harness and fixing it on another inner mold, placing the other inner mold on another mold for a second injection molding process to improve the structural strength of the wiring harness, and performing edge trimming after the processing is completed.

[0058] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An injection molding device for automotive electronic vacuum pump wiring harness, characterized by: The invention comprises an inner mold (1) and an outer mold (2), wherein the outer mold (2) comprises an upper mold (21) and a lower mold (22), one side of the inner mold (1) is connected to the upper mold, and the other side of the inner mold (1) is connected to the lower mold (22), the inner mold (1) is used to fix the wiring harness, the upper mold (21) is connected to the lower mold (22), the upper mold (21) and the lower mold (22) together form an injection molding cavity (23), the injection molding cavity (23) is used to wrap the outer periphery of the connection between the wire and the terminal placed therein with an insulating shell, the upper mold (21) is provided with a passage opening (217), and the passage opening (217) is connected to the injection molding cavity (23); The inner mold (1) includes a positioning block (11), a clamping member (12), an abutting block (13) and a limiting rod (14); the lower end of the positioning block (11) is connected to the lower mold (22); the upper end of the positioning block (11) is provided with a placement groove (113); the bottom of the placement groove (113) is provided with a fixing groove (1131); the outer wall of the positioning block (11) is provided with a connecting hole (114); the connecting hole (114) is connected to the placement groove (113); the connecting hole (114) is used for embedding a terminal; the clamping member (12) is used for clamping the terminal; The clamping member (12) comprises a fixed block (121) and a spring piece (122), wherein the fixed block (121) is embedded in the fixed groove (1131), and two spring pieces (122) are provided, and the two spring pieces (122) are both connected to the fixed block (121), and the distance between the two spring pieces (122) decreases as they move away from the fixed block (121), and the two spring pieces (122) are used to clamp the terminal; one end of the spring piece (122) away from the fixed block (121) is connected to a guide piece (123), and the distance between the two guide pieces (123) increases as they move away from the spring piece (122); The abutment block (13) is embedded in the placement groove (113), the upper end of the abutment block (13) is flush with the upper end surface of the positioning block (11), the bottom of the placement groove (113) is provided with a first fixing hole (1133), the abutment block (13) is provided with a second fixing hole (131), the inner diameter of the second fixing hole (131) increases with the increase of the height, and the screw passes through the second fixing hole (131) and is threadedly connected to the first fixing hole (1133) for fixing; The limiting rod (14) is connected to the positioning block (11), the limiting rod (14) is arranged on the outer periphery of the outer mold (2), and the limiting rod (14) is provided with a limiting groove (1421), and the limiting groove (1421) is used for embedding a wire.

2. The injection molding equipment for automotive electronic vacuum pump wiring harness according to claim 1, characterized in that: A positioning groove (2211) is provided at the upper end of the lower mold (22), and the inner mold (1) is embedded in the positioning groove (2211).

3. The injection molding equipment for automotive electronic vacuum pump wiring harness according to claim 2, characterized in that: The bottom of the positioning groove (2211) is connected to a positioning column (2214), the inner mold (1) is provided with a positioning hole (111), and the positioning column (2214) is connected to the inner wall of the positioning hole (111).

4. The injection molding equipment for automotive electronic vacuum pump wiring harness according to claim 1, characterized in that: The inner mold (1) comprises a handle (15), the handle (15) being connected to the end of the fixed block (121), and the handle (15) being used for being held by hand.

5. A processing technology for automotive electronic vacuum pump wiring harness, comprising the injection molding equipment for automotive electronic vacuum pump wiring harness according to any one of claims 1 to 4, characterized in that: The following steps are involved: Assemble and fix the wiring harness on the inner mold (1); Injection molding, placing the inner mold (1) together with the wiring harness on the outer mold (2) and performing one injection molding; Remolding: transferring the wire harness after one injection molding to another mold for secondary injection molding; Trimming: take out the formed wire harness and cut off the excess part.

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