Wire harness encapsulation method, mandrel, wire harness encapsulation mold, and wire harness

Abstract

The application discloses a wire harness gluing method, comprising the following steps: preparing a wire harness; preparing a mandrel, separating a body of the wire harness, a first wrapping layer and a second wrapping layer, taking off the first wrapping layer and inserting the mandrel between the body and the second wrapping layer; preparing a wire harness gluing mold; gluing the wire harness by using the wire harness gluing mold to form a gluing layer on an outer surface of the second wrapping layer; taking off the mandrel sleeved on the wire harness and restoring the first wrapping layer to be attached between the body and the second wrapping layer. The application further provides a mandrel, a wire harness gluing mold and a wire harness applied to the wire harness gluing method. The mandrel is sleeved on the wire harness, and cooperates with the wire harness gluing mold to define a gluing injection cavity, so that the wire harness is prevented from being deformed in the gluing process, the gluing layer is prevented from overflowing to form burrs, the gluing effect is ensured, and the quality of the glued wire harness is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wire harness encapsulation, in particular to a wire harness encapsulation method, a mandrel, a wire harness encapsulation mold and a wire harness. BACKGROUND

[0002] Wire harness encapsulation is a common processing method in the wire harness manufacturing industry. Through wire harness encapsulation, the wire harness is more wear-resistant, the corrosion resistance is improved, the appearance is beautified, and thus the service life and applicability of the wire harness are improved. Wire harness encapsulation is divided into manual encapsulation and automatic encapsulation by machine. The former is low in efficiency and consumes a lot of manpower, so the automatic encapsulation by machine with high efficiency is usually used at present.

[0003] However, in the existing encapsulation method, the surface of the wire harness is prone to deformation during encapsulation, which causes the encapsulation layer on the surface of the wire harness to overflow and form burrs, affecting the encapsulation effect and thus reducing the product quality of the wire harness. SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a wire harness encapsulation method. A mandrel is sleeved on the wire harness, and an encapsulation injection cavity is defined by cooperating with a wire harness encapsulation mold. The wire harness is prevented from deforming during encapsulation, and the encapsulation layer is prevented from overflowing to form burrs, thereby ensuring the encapsulation effect and improving the quality of the encapsulated wire harness.

[0005] The present application also provides a mandrel, a wire harness encapsulation mold and a wire harness for use in the above-mentioned wire harness encapsulation method.

[0006] According to the wire harness encapsulation method of the first aspect of the present application, the following steps are included:

[0007] Preparation of a wire harness, the wire harness comprising a body, a first wrapping layer and a second wrapping layer, the first wrapping layer being wrapped on the outer surface of the body, and the second wrapping layer being wrapped on the outer surface of the first wrapping layer;

[0008] Preparation of a mandrel, the first wrapping layer being taken out from between the body and the second wrapping layer, and the mandrel being inserted between the body and the second wrapping layer;

[0009] Preparation of a wire harness encapsulation mold, the mandrel sleeved on the wire harness being clamped by the wire harness encapsulation mold;

[0010] Encapsulation of the wire harness using the wire harness encapsulation mold to form an encapsulation layer on the outer surface of the second wrapping layer;

[0011] The mandrel sleeved on the wire harness is removed, and the first wrapping layer is restored to be attached between the body and the second wrapping layer.

[0012] According to the wire harness gluing method of the first aspect of the present application, at least the following beneficial effects are achieved: the mandrel is sleeved on the outer surface of the body and inserted between the body and the second wrapping layer of the wire harness, then the wire harness gluing mold is used to clamp the mandrel sleeved on the wire harness, and the gluing is performed on the outer surface of the second wrapping layer to form a gluing layer, and finally the mandrel is removed and the first wrapping layer is restored to be attached between the body and the second wrapping layer. The mandrel is always wrapped around the body of the wire harness during the gluing process, so that the body is not deformed, and the formed gluing layer is not deformed. The wire harness is fixed on the wire harness gluing mold through the mandrel, which improves the protection of the wire harness. The injection cavity for gluing is formed between the mandrel and the wire harness gluing mold, which reduces the probability of burr caused by overflow during the gluing process, ensures the gluing effect, makes the position of the gluing layer accurate, and improves the product quality.

[0013] In some embodiments, the inserting the mandrel between the body and the second wrapping layer comprises the steps of:

[0014] Separating the first sleeve member and the second sleeve member of the mandrel;

[0015] Placing the wire harness between the first sleeve member and the second sleeve member, and closing the first sleeve member and the second sleeve member;

[0016] Inserting the first sleeve member and the second sleeve member between the body and the second wrapping layer;

[0017] The removing the mandrel sleeved on the wire harness comprises the steps of:

[0018] Pulling out the first sleeve member and the second sleeve member from the body and the second wrapping layer;

[0019] Separating the first sleeve member and the second sleeve member, and removing the mandrel from the body.

[0020] According to the mandrel of the second aspect of the present application, the mandrel is applied to any one of the wire harness gluing methods described above, and comprises a first sleeve member and a second sleeve member. The first sleeve member comprises a first connecting portion and a first inserting portion connected to each other in the length direction. The second sleeve member comprises a second connecting portion and a second inserting portion connected to each other in the length direction, and the second connecting portion is rotationally connected to the first connecting portion. The mandrel comprises a closed state and an open state. In the closed state, the first sleeve member and the second sleeve member are mutually engaged and sleeved on the wire harness, and the first inserting portion and the second inserting portion are inserted between the body and the second wrapping layer of the wire harness. In the open state, the first sleeve member and the second sleeve member are separated from each other to enable the wire harness to be taken out of or placed into the mandrel.

[0021] According to the mandrel of the second aspect of the present application, at least the following beneficial effects are achieved: the mandrel is sleeved on the outer surface of the body and inserted between the body and the second wrapping layer of the wire harness, then the mandrel sleeved on the wire harness is clamped by the wire harness encapsulation mold, and encapsulation is performed on the outer surface of the second wrapping layer to form an encapsulation layer, and finally the mandrel is removed and the first wrapping layer is restored to be attached between the body and the second wrapping layer. The mandrel is always wrapped around the body of the wire harness during the encapsulation process, so that the body is not deformed, thereby preventing the formed encapsulation layer from being deformed. The wire harness is fixed to the wire harness encapsulation mold by the mandrel, which improves the protection of the wire harness. The injection cavity for encapsulation is formed between the mandrel and the wire harness encapsulation mold, which reduces the probability of burr caused by overflow during encapsulation, ensures the encapsulation effect, and makes the position of the encapsulation layer accurate and the structure of the encapsulation layer stable, thereby improving the product quality.

[0022] In some embodiments, at least one of the first connecting portion and the second connecting portion is provided with a positioning groove, and the other is provided with a protrusion, and the protrusion is clamped in the positioning groove in the closed state.

[0023] According to the wire harness encapsulation mold of the third aspect of the present application, it is applied to the wire harness encapsulation method described in any of the above, which comprises: an upper mold, a lower mold and a clamping device, the upper mold and the lower mold can be mutually buckled and define a flow channel and a clamping passage, the flow channel is used for flowing glue to encapsulate the wire harness, and the clamping passage is used for accommodating the combination of the mandrel and the wire harness, and the flow channel and the clamping passage are communicated; the clamping device is arranged between the upper mold and the lower mold, the clamping device comprises a first clamping piece and a second clamping piece, the first clamping piece has a V-shaped first groove part defined by a first clamping surface and a second clamping surface, the cross section of the first groove part is V-shaped, the second clamping piece has a second groove part defined by a third clamping surface and a fourth clamping surface, the cross section of the second groove part is V-shaped, the first clamping piece and the second clamping piece can be mutually buckled to define a first accommodating cavity to clamp the combination of the mandrel and the wire harness, and the first clamping piece and the second clamping piece can be mutually separated to release the combination of the mandrel and the wire harness, and the first accommodating cavity is contained in the clamping passage.

[0024] According to the wire harness clamping device of the third aspect of the present application, the following advantages are achieved: the shaft sleeve is arranged on the outer surface of the body and inserted between the body of the wire harness and the second wrapping layer, then the shaft sleeve arranged on the wire harness is clamped by the wire harness encapsulation mold, and encapsulation is performed on the outer surface of the second wrapping layer to form an encapsulation layer, finally the shaft is removed and the first wrapping layer is restored to be attached between the body and the second wrapping layer, the shaft is always wrapped around the body of the wire harness during the encapsulation process, so that the body is not deformed, and the formed encapsulation layer is not deformed, the wire harness is fixed on the wire harness encapsulation mold by the shaft, the protection of the wire harness is improved, and the injection cavity for encapsulation is formed between the shaft and the wire harness encapsulation mold, the probability of burr caused by overflow during encapsulation is reduced, the encapsulation effect is ensured, the position of the encapsulation layer is accurate, the structure of the encapsulation layer is stable, and the product quality is improved.

[0025] In some embodiments, the clamping device further comprises a cover plate and a base, the cover plate is movably connected with the base, the cover plate is fixedly connected with the first clamping piece, the second clamping piece is installed on the base, and the cover plate can drive the first clamping piece to move and be buckled with or separated from the second clamping piece.

[0026] In some embodiments, the upper mold is provided with a first encapsulation groove, the lower mold is provided with a second encapsulation groove, and the first encapsulation groove and the second encapsulation groove jointly define a second accommodating cavity for collecting the glue for encapsulating the wire harness.

[0027] In some embodiments, the lower mold is provided with a pressing plate and a fastener, the fastener is arranged on the lower mold, the pressing plate is provided with a third groove portion, the third groove portion is penetrated by the fastener, and the pressing plate can slide relative to the fastener, and the pressing plate can abut against the wire harness.

[0028] In some embodiments, the wire harness encapsulation mold further comprises a bottom plate and a buckle, one end of the buckle is rotatably connected with the bottom plate, and rotating the buckle can realize abutting or separating of the other end of the buckle with the lower mold.

[0029] According to the wire harness of the fourth aspect of the present application, the wire harness is processed by any one of the wire harness encapsulation methods, and comprises a body, a first wrapping layer, a second wrapping layer and an encapsulation layer, the first wrapping layer is wrapped on the outer surface of the body, the second wrapping layer is wrapped on the outer surface of the first wrapping layer, and the encapsulation layer is encapsulated on the outer surface of the second wrapping layer.

[0030] According to the wire harness of the fourth aspect of the present application, at least the following beneficial effects are achieved: the mandrel is sleeved on the outer surface of the body and inserted between the body and the second wrapping layer of the wire harness, then the mandrel sleeved on the wire harness is clamped by the wire harness encapsulation mold, and encapsulation is performed on the outer surface of the second wrapping layer to form an encapsulation layer, finally the mandrel is removed and the first wrapping layer is restored to be attached between the body and the second wrapping layer, the mandrel is always wrapped around the body of the wire harness during the encapsulation process, so that the body is not deformed, thereby the formed encapsulation layer is not deformed, and the wire harness is fixed to the wire harness encapsulation mold by the mandrel, thereby improving the protection of the wire harness, and an injection cavity for encapsulation is formed between the mandrel and the wire harness encapsulation mold, so that the wire harness formed in this way reduces the probability of burr caused by overflow during encapsulation, ensures the encapsulation effect, makes the position of the encapsulation layer accurate, and improves the product quality.

[0031] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0032] The present application will be further described below in conjunction with the drawings and examples, wherein:

[0033] Figure 1 The flowchart of the wire harness encapsulation method of the first aspect of the present application;

[0034] Figure 2 The flowchart of S200 in Figure 1

[0035] The flowchart of S500 in Figure 3 Figure 1 The structure schematic diagram of the mandrel of the second aspect of the present application;

[0036] Figure 4 The exploded view of the mandrel;

[0037] Figure 5 Figure 4 The structure schematic diagram of the wire harness encapsulation mold of the third aspect of the present application;

[0038] Figure 6 The internal structure schematic diagram of the wire harness encapsulation mold in

[0039] Figure 7 The structure schematic diagram of the clamping device of the wire harness encapsulation mold in Figure 6

[0040] The structure schematic diagram of the clamping device of the wire harness encapsulation mold in Figure 8 Figure 6 The structure schematic diagram of the clamping device of the wire harness encapsulation mold in

[0041] Figure 9 Figure 8 ​​​​Structure diagram of the first clamping part of the clamping device;

[0042] Figure 10 For Figure 8 Structure diagram of the second clamping part of the clamping device;

[0043] Figure 11 For Figure 6 Structure diagram of the upper die and the lower die of the wire harness encapsulation mold;

[0044] Figure 12 For Figure 11 Structure diagram of the upper die;

[0045] Figure 13 For Figure 11 Structure diagram of the lower die;

[0046] Figure 14 Structure diagram of the wire harness of the fourth aspect of the present application;

[0047] Figure 15 Structure diagram of the combination of the mandrel and the wire harness.

[0048] Reference signs: mandrel 100, first sleeve part 110, first connecting part 111, first insertion part 112, positioning groove 113, second sleeve part 120, second connecting part 121, second insertion part 122, protrusion 130;

[0049] Wire harness encapsulation mold 200, upper die 210, lower die 220, clamping device 230, bottom plate 250, buckle 260, handle 270, flow channel 280, clamping channel 290;

[0050] First clamping part 231, second clamping part 232, first clamping surface 233, second clamping surface 234, third clamping surface 235, fourth clamping surface 236, first slot part 237, second slot part 238, cover plate 239, base 240;

[0051] First encapsulation groove 211, second encapsulation groove 221, pressing plate 223, fastener 224, third slot part 225;

[0052] Wire harness 300, main body 310, first wrapping layer 320, second wrapping layer 330, encapsulation layer 340. DETAILED DESCRIPTION

[0053] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary, only for explaining the present application, and cannot be understood as a limitation of the present application.

[0054] In the description of the present application, if the orientation description is involved, for example, the orientation or position relationship indicated by up, down, front, back, left, right and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0055] In the description of the present application, if the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, more than and the like are understood as not including the number, above, below, within and the like are understood as including the number. If it is described as first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of indicated technical features.

[0056] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting and the like should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0057] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present application. In the specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0058] Referring to Figure 1 , Figure 4 , Figure 6 , Figure 14 and Figure 15 . Among them, Figure 14 and Figure 15 In order to better reflect the structure of the wire harness, perspective processing is performed. The first aspect of the present application provides a wire harness 300 encapsulation method, comprising the steps of:

[0059] S100: preparing a wire harness 300. The wire harness 300 includes a body 310, a first wrapping layer 320 and a second wrapping layer 330, the first wrapping layer 320 is wrapped on the outer surface of the body 310, and the second wrapping layer 330 is wrapped on the outer surface of the first wrapping layer 320.

[0060] S200: sleeving the mandrel 100. The mandrel 100 is prepared, the first wrapping layer 320 is taken out from between the body 310 and the second wrapping layer 330, and the mandrel 100 is inserted between the body 310 and the second wrapping layer 330. Specifically, in some embodiments, the first wrapping layer 320 is separated from the body 310 and the second wrapping layer 330, and is slid along the outer surface of the body 310 by a certain distance, so that the mandrel 100 can be sleeved on the outer surface of the body 310, and then the mandrel 100 sleeved on the outer surface of the body 310 is inserted between the body 310 and the second wrapping layer 330, instead of the first wrapping layer 320 before sliding. The center axis 100 is always wrapped in the body 310 of the wire harness 300 during the encapsulation process, so that the body 310 will not be deformed, and the encapsulation layer 340 is also supported, so that the formed encapsulation layer 340 will not be deformed, and the product quality of the body 310 and the encapsulation layer 340 is protected.

[0061] S300: clamping the mandrel 100. The wire harness encapsulation mold 200 is prepared, and the mandrel 100 sleeved on the wire harness 300 is clamped using the wire harness encapsulation mold 200. The mandrel 100 is clamped by the wire harness encapsulation mold 200, so that the wire harness 300 is fixed and positioned accurately to facilitate encapsulation, and also avoids damage to the wire harness 300 by clamping force, protecting the wire harness 300.

[0062] S400: wire harness 300 encapsulation. The wire harness 300 is encapsulated using the wire harness encapsulation mold 200 to form the encapsulation layer 340 on the outer surface of the second wrapping layer 330. The injection cavity for encapsulation is formed between the mandrel 100 and the wire harness encapsulation mold 200, so that no flash is generated during encapsulation, the encapsulation effect is guaranteed, the position of the encapsulation layer 340 is accurate, the structure of the encapsulation layer 340 is stable, and the product quality is improved.

[0063] S500: removing the mandrel 100. The mandrel 100 sleeved on the wire harness 300 is removed, and the first wrapping layer 320 is restored to fit between the body 310 and the second wrapping layer 330. The first wrapping layer 320 is restored, protecting the original structure of the wire harness 300, while also ensuring that the encapsulation effect of the wire harness 300 is not damaged, improving the product quality.

[0064] The mandrel 100 is sleeved on the outer surface of the body 310 and inserted between the body 310 and the second wrapping layer 330 of the wire harness 300, then the wire harness 300 sleeved with the mandrel 100 is clamped by the wire harness encapsulation mold 200, and the encapsulation layer 340 is formed on the outer surface of the second wrapping layer 330, and finally the mandrel 100 is removed and the first wrapping layer 320 is restored to fit between the body 310 and the second wrapping layer 330. The mandrel 100 is always wrapped around the body 310 of the wire harness 300 during the encapsulation process, so that the body 310 will not be deformed, thereby preventing the formed encapsulation layer 340 from being deformed. The wire harness 300 is fixed to the wire harness encapsulation mold 200 through the mandrel 100, which improves the protection of the wire harness 300. The injection cavity for encapsulation is formed between the mandrel 100 and the wire harness encapsulation mold 200, which reduces the probability of burr caused by overflow during encapsulation, ensures the encapsulation effect, and makes the position of the encapsulation layer 340 accurate and the structure of the encapsulation layer 340 stable, thereby improving the product quality. After the encapsulation is completed, the first wrapping layer 320 is restored to protect the original structure of the wire harness 300 and ensure the encapsulation effect, thereby improving the product quality.

[0065] With reference to Figure 2 , Figure 4 , Figure 5 and Figure 15 . Specifically, in some embodiments, the step S200 of sleeving the mandrel 100 further comprises the steps of:

[0066] S210: opening the mandrel 100. The first sleeving part 110 and the second sleeving part 120 of the mandrel 100 are separated, so as to facilitate the placement of the body 310 of the wire harness 300 between the first sleeving part 110 and the second sleeving part 120, thereby improving the convenience of sleeving the wire harness 300 by the mandrel 100.

[0067] S220: closing the mandrel 100. The wire harness 300 is placed between the first sleeving part 110 and the second sleeving part 120, and the first sleeving part 110 and the second sleeving part 120 are closed. The body 310 of the wire harness 300 is sleeved by closing the first sleeving part 110 and the second sleeving part 120, thereby improving the convenience of sleeving the wire harness 300 by the mandrel 100 and ensuring the stability of the sleeving.

[0068] S230: inserting the mandrel 100. The first sleeving part 110 and the second sleeving part 120 are inserted between the body 310 and the second wrapping layer 330, so that the mandrel 100 wraps the part of the body 310 that needs to be encapsulated, thereby protecting the body 310 and supporting the encapsulation layer 340, protecting the original structure of the wire harness 300 and ensuring the encapsulation effect, thereby improving the product quality.

[0069] With reference to Figure 3 , Figure 4 , Figure 5 andFigure 15 Specifically, in some embodiments, the step S500 of taking down the mandrel 100 further comprises the steps of:

[0070] S510: pulling out the mandrel 100. The first set member 110 and the second set member 120 are pulled out from between the body 310 and the second wrapping layer 330, facilitating the taking down of the mandrel 100 from the body 310 and also providing space for the resetting of the first wrapping layer 320.

[0071] S520: separating the mandrel 100. The first set member 110 and the second set member 120 are separated, and the mandrel 100 is taken down from the body 310. The convenience of taking down the mandrel 100 from the wire harness 300 is improved.

[0072] With reference to Figure 4 and Figure 5 The second aspect embodiment of the present application provides a mandrel 100 applied to a wire harness 300 encapsulation method, comprising: a first set member 110 and a second set member 120, the first set member 110 comprising a first connecting part 111 and a first insertion part 112 connected to each other along the length direction; the second set member 120 comprising a second connecting part 121 and a second insertion part 122 connected to each other along the length direction, the second connecting part 121 being rotationally connected with the first connecting part 111; wherein the mandrel 100 comprises a closed state and an open state, in the closed state, the first set member 110 and the second set member 120 are mutually buckled and set on the wire harness 300, and the first insertion part 112 and the second insertion part 122 are inserted between the body 310 and the second wrapping layer 330 of the wire harness 300; in the open state, the first set member 110 and the second set member 120 are mutually separated so that the wire harness 300 can be taken out of or put into the mandrel 100. By rotating the first connecting part 111 or the second connecting part 121, the first connecting part 111 and the second connecting part 121 are buckled, and at the same time, the first insertion part 112 and the second insertion part 122 are also buckled with each other, facilitating the setting of the wire harness 300 or the taking down of the wire harness 300, and improving the convenience.

[0073] The mandrel 100 is sleeved on the outer surface of the body 310 and inserted between the body 310 and the second wrapping layer 330 of the wire harness 300, then the mandrel 100 sleeved on the wire harness 300 is clamped by the wire harness encapsulation mold 200, and the encapsulation layer 340 is formed by encapsulating the outer surface of the second wrapping layer 330, finally the mandrel 100 is removed and the first wrapping layer 320 is restored to adhere between the body 310 and the second wrapping layer 330, the mandrel 100 is always wrapped around the body 310 of the wire harness 300 during the encapsulation process, so that the body 310 will not be deformed, thereby the formed encapsulation layer 340 will not be deformed, the wire harness 300 is fixed to the wire harness encapsulation mold 200 through the mandrel 100, the protection of the wire harness 300 is improved, and the injection cavity for encapsulation is formed between the mandrel 100 and the wire harness encapsulation mold 200, the probability of burr caused by overflow during encapsulation is reduced, the encapsulation effect is guaranteed, the position of the encapsulation layer 340 is accurate, the structure of the encapsulation layer 340 is stable, and the product quality is improved.

[0074] Specifically, in some embodiments, the first connecting part 111 and the second connecting part 121 are each provided with a positioning groove 113, one of the first connecting part 111 and the second connecting part 121 is provided with a protrusion 130, and the protrusion 130 can be inserted into the two positioning grooves 113 in the closed state. When the mandrel 100 is opened, the protrusion 130 is removed, and the first sleeving member 110 and the second sleeving member 120 are separated by rotating the first connecting part 111 or the second connecting part 121; when the mandrel 100 is closed, the first sleeving member 110 and the second sleeving member 120 are buckled by rotating the first connecting part 111 or the second connecting part 121, the protrusion 130 is inserted into the positioning groove 113, and the first connecting part 111 and the second connecting part 121 are fixed together, thereby improving the convenience of opening and closing the mandrel 100, and also improving the stability of the mandrel 100 sleeved on the wire harness 300.

[0075] Referring to Figures 6 to 13 . In order to more clearly show the structure, the Figure 7The structure of the combination of the mandrel 100 and the wire harness 300 and the clamping device 230 at one end of the wire harness 300 close to the pressing plate 223 is hidden. The third aspect of the present application provides a wire harness encapsulation mold 200 applied to a wire harness 300 encapsulation method, which comprises an upper mold 210, a lower mold 220 and a clamping device 230. The upper mold 210 and the lower mold 220 can be buckled to each other and define a flow channel 280 and a clamping channel 290. The flow channel 280 is used to flow the encapsulation material to encapsulate the wire harness 300. The clamping channel 290 is used to accommodate the combination of the mandrel 100 and the wire harness 300. The flow channel 280 and the clamping channel 290 are communicated. The clamping device 230 is arranged between the upper mold 210 and the lower mold 220. The clamping device 230 comprises a first clamping part 231 and a second clamping part 232. The first clamping part 231 has a V-shaped first groove part 237 defined by a first clamping surface 233 and a second clamping surface 234. The cross section of the first groove part 237 is V-shaped. The second clamping part 232 has a second groove part 238 defined by a third clamping surface 235 and a fourth clamping surface 236. The cross section of the second groove part 238 is V-shaped. The first clamping part 231 and the second clamping part 232 can be buckled to each other to define a first accommodating cavity with a cross section of an oblique rectangle, so as to clamp the combination of the mandrel 100 and the wire harness 300. The cross section of the mandrel 100 is rectangular. The first clamping part 231 and the second clamping part 232 can be separated from each other to release the combination of the mandrel 100 and the wire harness 300. The first accommodating cavity is contained in the clamping channel 290.

[0076] By sleeving the mandrel 100 on the outer surface of the body 310 and inserting the body 310 and the second wrapping layer 330 of the wire harness 300, then using the wire harness encapsulation mold 200 to clamp the mandrel 100 sleeved on the wire harness 300, and encapsulating on the outer surface of the second wrapping layer 330 to form the encapsulation layer 340, finally taking off the mandrel 100 and restoring the first wrapping layer 320 to fit between the body 310 and the second wrapping layer 330, the mandrel 100 is always wrapped around the body 310 of the wire harness 300 during the encapsulation process, so that the body 310 will not be deformed, thereby the formed encapsulation layer 340 will not be deformed. The wire harness 300 is fixed to the wire harness encapsulation mold 200 through the mandrel 100, which improves the protection of the wire harness 300. The injection cavity for encapsulation is formed between the mandrel 100 and the wire harness encapsulation mold 200, so that there will be no overflow and burr during the encapsulation process, which ensures the encapsulation effect, the position of the encapsulation layer 340 is accurate, the structure of the encapsulation layer 340 is stable, and the product quality is improved.

[0077] The first clamping surface 233 and the second clamping surface 234 form a V-shaped first groove part 237, the third clamping surface 235 and the fourth clamping surface 236 form a V-shaped second groove part 238, the first groove part 237 and the second groove part 238 cooperate to form an obliquely arranged rectangular clamping channel 290 for clamping the wire harness 300, the downward pressure of the first clamping part 231 on the wire harness 300 can be distributed on the contact surface of the wire harness 300 and the first clamping surface 233 and the contact surface of the wire harness 300 and the second clamping surface 234, the upward supporting force of the second clamping part 232 on the wire harness 300 can be distributed on the contact surface of the wire harness 300 and the third clamping surface 235 and the contact surface of the wire harness 300 and the fourth clamping surface 236, so that the stress of the wire harness 300 is more dispersed, avoiding the damage of the wire harness 300 due to the clamping force and gravity, and also ensuring the clamping effect on the wire harness 300, improving the product quality of the wire harness 300, and the first clamping part 231 and the second clamping part 232 can cooperate and separate, improving the convenience of the operation of clamping the wire harness 300, and the first clamping surface 233, the second clamping surface 234, the third clamping surface 235 and the fourth clamping surface 236 clamp the four surfaces of the wire harness 300 respectively, avoiding the wire pressing problem when the wire harness 300 is coated, and the first groove part 237 and the second groove part 238 can cooperate and separate, improving the convenience of the operation of the clamping spindle 100.

[0078] With reference to Figure 7 More specifically, in some embodiments, the number of clamping devices 230 for clamping the combination of the spindle 100 and the wire harness 300 is two, one clamping device 230 is used to clamp the first connecting part 111 and the second connecting part 121, and the other clamping device 230 is used to clamp the first insertion part 112 and the second insertion part 122, which ensures the clamping effect and improves the stability of clamping. The number of clamping devices 230 is not limited to this, and can also be one or more than two. More specifically, in some embodiments, the wire harness coating mold 200 can clamp two spindles 100 and wire harness 300 combinations at the same time to realize the coating of two wire harnesses 300 at the same time, improving the efficiency.

[0079] With reference to Figure 8Specifically, in some embodiments, the clamping device 230 further comprises a cover plate 239 and a base 240, the cover plate 239 is movably connected with the base 240, the cover plate 239 is fixedly connected with the first clamping piece 231, the second clamping piece 232 is installed on the base 240, the cover plate 239 can drive the first clamping piece 231 to move to be buckled with the second clamping piece 232 or separated from the second clamping piece 232. More specifically, in some embodiments, the cover plate 239 and the first clamping piece 231 are connected by welding or bolt connection, one end of the cover plate 239 is movably connected with the base 240, and the movable connection can be rotary connection around a bearing or sliding connection on the base 240 through a slide rail. The first clamping piece 231 is driven to move by moving the cover plate 239, so that the first clamping piece 231 and the second clamping piece 232 are buckled or separated from each other, the clamping device 230 is closed and opened, the buckling and separation of the first clamping piece 231 and the second clamping piece 232 are more convenient and labor-saving, the convenience of clamping the wire harness 300 is improved, and manpower is saved.

[0080] With reference to Figure 9 And Figure 10 Specifically, in some embodiments, the upper die 210 is provided with a first encapsulation groove 211, and the lower die 220 is provided with a second encapsulation groove 221, and the first encapsulation groove 211 and the second encapsulation groove 221 jointly define a second accommodating cavity for collecting glue for encapsulating the wire harness 300. More specifically, in some embodiments, the upper die 210 and the lower die 220 are buckled with each other and define a flow channel 280, the flow channel 280, the second accommodating cavity and the clamping channel 290 are all communicated, during encapsulation, the shaft 100 sleeved on the wire harness 300 is clamped in the clamping channel 290, the glue for encapsulation is collected in the second accommodating cavity through the flow channel 280, and the wire harness 300 clamped in the clamping channel 290 is encapsulated through the mold shape of the second accommodating cavity. The shaft 100 is always wrapped around the body 310 of the wire harness 300 during the encapsulation process, so that the body 310 will not be deformed, so that the formed encapsulation layer 340 will not be deformed, the wire harness 300 is fixed on the wire harness encapsulation die 200 through the shaft 100, the protection of the wire harness 300 is improved, and an injection cavity for encapsulation is formed between the shaft 100 and the second accommodating cavity, so that glue overflow and burrs will not occur during encapsulation, the encapsulation effect is ensured, the position of the encapsulation layer 340 is accurate, the structure of the encapsulation layer 340 is stable, and the product quality is improved.

[0081] Specifically, in some embodiments, the lower mold 220 is provided with a pressing plate 223 and a fastener 224, the fastener 224 is arranged on the lower mold 220, the pressing plate 223 is provided with a third slot 225, the third slot 225 is arranged through the fastener 224 and the pressing plate 223 can slide relative to the fastener 224, and the pressing plate 223 can abut against the wire harness 300. Due to the length of the wire harness 300, there is a part not sleeved by the shaft 100, in order to prevent this part of the wire harness 300 from shaking or affecting the normal operation of the wire harness encapsulation mold 200, the pressing plate 223 is arranged to abut against the wire harness 300 to prevent interference with encapsulation. When encapsulating, the pressing plate 223 is slid, the third slot 225 slides relative to the fastener 224, so that the pressing plate 223 abuts against the wire harness 300; when the encapsulation is completed, the pressing plate 223 is slid, the third slot 225 slides relative to the fastener 224, so that the pressing plate 223 no longer abuts against the wire harness 300, facilitating the removal of the shaft 100 sleeved on the wire harness 300 from the wire harness encapsulation mold 200. The arrangement of the pressing plate 223 and the fastener 224 facilitates operation, improves convenience, and also ensures the abutment against the wire harness 300 and prevents external interference.

[0082] Referring to Figure 6 Specifically, in some embodiments, the wire harness encapsulation mold 200 further comprises a bottom plate 250 and a buckle 260, one end of the buckle 260 is rotatably connected with the bottom plate 250, and rotation of the buckle 260 can realize abutment or separation of the other end of the buckle 260 with the lower mold 220. Rotating the buckle 260 can separate the buckle 260 from the lower mold 220, facilitating the removal of the upper mold 210 and the lower mold 220 for maintenance or replacement; rotating the buckle 260 can abut the buckle 260 with the lower mold 220 to fix the positions of the upper mold 210 and the lower mold 220. The design of the buckle 260 improves the convenience of mounting and dismounting the mold from the bottom plate 250. More specifically, in some embodiments, the wire harness encapsulation mold 200 further comprises a handle 270, the handle 270 is mounted on the lower mold 220, and when the upper mold 210 and the lower mold 220 are maintained or replaced, the handle 270 is moved to remove the upper mold 210 and the lower mold 220, thereby improving the convenience of mounting and dismounting the mold from the bottom plate 250.

[0083] Referring to Figure 14 The fourth aspect embodiment of the present application improves a wire harness 300 processed by a wire harness encapsulation method, which comprises a body 310, a first wrapping layer 320, a second wrapping layer 330 and an encapsulation layer 340, the first wrapping layer 320 is wrapped on the outer surface of the body 310, the second wrapping layer 330 is wrapped on the outer surface of the first wrapping layer 320, and the encapsulation layer 340 is encapsulated on the outer surface of the second wrapping layer 330.

[0084] The mandrel 100 is sleeved on the outer surface of the body 310 and inserted between the body 310 and the second wrapping layer 330 of the wire harness 300, then the mandrel 100 sleeved on the wire harness 300 is clamped by the wire harness encapsulation mold 200, and the encapsulation is performed on the outer surface of the second wrapping layer 330 to form the encapsulation layer 340, finally the mandrel 100 is removed and the first wrapping layer 320 is restored to be attached between the body 310 and the second wrapping layer 330, the mandrel 100 is always wrapped on the body 310 of the wire harness 300 during the encapsulation process, so that the body 310 is not deformed, thereby the formed encapsulation layer 340 is not deformed, and the wire harness 300 is fixed to the wire harness encapsulation mold 200 through the mandrel 100, the protection of the wire harness 300 is improved, and the injection cavity for encapsulation is formed between the mandrel 100 and the wire harness encapsulation mold 200, so that the wire harness 300 formed in this way reduces the probability of burr caused by overflow during encapsulation, ensures the encapsulation effect, makes the position of the encapsulation layer 340 accurate, the structure of the encapsulation layer 340 stable, and improves the product quality.

[0085] The above describes the embodiments of the application in detail in combination with the drawings, but the application is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the application. In addition, the embodiments of the application and the features in the embodiments can be combined with each other without conflict.

Claims

1. A method for overcoating wire harnesses, characterized in that, Including the following steps: Prepare a wire harness, the wire harness including a body, a first wrapping layer and a second wrapping layer, the first wrapping layer wrapping the outer surface of the body, and the second wrapping layer wrapping the outer surface of the first wrapping layer; Prepare the mandrel, remove the first wrapping layer from between the body and the second wrapping layer, and insert the mandrel between the body and the second wrapping layer. The mandrel is sleeved on the outer surface of the body so that the mandrel wraps around the body of the wire harness during the overcoating process. Prepare a wire harness coating mold, and use the wire harness coating mold to clamp the mandrel sleeved on the wire harness; The wire harness is coated with the wire harness using the wire harness coating mold to form a coating layer on the outer surface of the second coating layer; Remove the mandrel fitted onto the wire harness and restore the first wrapping layer to adhere between the body and the second wrapping layer; The mandrel includes a first set of components, the first set of components including a first connecting part and a first inserting part that are connected to each other along the length direction; The second set of components includes a second connecting part and a second inserting part that are connected to each other along the length direction, and the second connecting part is rotatably connected to the first connecting part. The mandrel includes a closed state and an open state. In the closed state, the first sleeve and the second sleeve are interlocked and sleeved on the wire harness, and the first insertion part and the second insertion part are inserted between the body of the wire harness and the second wrapping layer.

2. The wire harness overcoating method according to claim 1, characterized in that, The step of inserting the mandrel between the body and the second wrapping layer includes the following steps: Separate the first and second sets of components of the mandrel; Place the wire harness between the first set and the second set, and close the first set and the second set. The first set of components and the second set of components are inserted between the body and the second wrapping layer; The step of removing the mandrel fitted onto the wire harness includes the following steps: Pull the first set of components and the second set of components out from between the body and the second wrapping layer; Separate the first set of components and the second set of components, and remove the mandrel from the body.

3. The wire harness overcoating method according to claim 2, characterized in that, In the open state, the first set of devices and the second set of devices are separated from each other so that the wire harness can be taken out or put into the mandrel.

4. The wire harness overcoating method according to claim 3, characterized in that, At least one of the first connecting part and the second connecting part is provided with a positioning groove, and the other is provided with a protrusion. In the closed state, the protrusion is engaged with the positioning groove.

5. The wire harness overcoating method according to claim 4, characterized in that, The wire harness overmolding mold includes: The upper mold and the lower mold are interlocked and define a clamping channel. The lower mold is provided with a flow channel for flowing adhesive to coat the wire harness. The clamping channel is used to accommodate the combination of the mandrel and the wire harness. The flow channel and the clamping channel are connected. A clamping device is disposed between the upper mold and the lower mold. The clamping device includes a first clamping member and a second clamping member. The first clamping member has a V-shaped first groove defined by a first clamping surface and a second clamping surface, and the first groove has a V-shaped cross-section. The second clamping member has a second groove defined by a third clamping surface and a fourth clamping surface, and the second groove has a V-shaped cross-section. The first clamping member and the second clamping member can engage with each other to form a first receiving cavity to clamp the assembly of the mandrel and the wire harness. The first clamping member and the second clamping member can separate from each other to release the assembly of the mandrel and the wire harness. The first receiving cavity is contained within the clamping channel.

6. The wire harness overcoating method according to claim 5, characterized in that, The clamping device further includes a cover plate and a base. The cover plate is movably connected to the base and fixedly connected to the first clamping member. The second clamping member is installed on the base. The cover plate can drive the first clamping member to move and engage with the second clamping member, or separate from the second clamping member.

7. The wire harness overcoating method according to claim 5, characterized in that, The upper mold is provided with a first coating groove, and the lower mold is provided with a second coating groove. The first coating groove and the second coating groove together define a second receiving cavity for collecting the adhesive material to coat the wire harness.

8. The wire harness overcoating method according to claim 5, characterized in that, The lower mold is provided with a pressure plate and a fastener. The fastener is provided on the lower mold. The pressure plate has a third groove. The fastener passes through the third groove and the pressure plate can slide relative to the fastener. The pressure plate can hold the wire harness.

9. The wire harness overcoating method according to claim 5, characterized in that, The wire harness overmolding mold also includes a base plate and a buckle. One end of the buckle is rotatably connected to the base plate, and rotating the buckle can cause the other end of the buckle to abut against or separate from the lower mold.

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