A center positioning mechanism, a wiring harness casting device and a wiring harness casting method

Abstract

The present invention discloses a center positioning mechanism, a wire harness casting device and a wire harness casting method. The center positioning mechanism includes a side plate, a sliding plate and a clamping mechanism. The wire harness casting device includes a center positioning mechanism and a casting tool. There are two casting tools. The opposite surfaces of the two casting tools are provided with casting troughs. When the casting troughs of the two casting tools are relatively connected, the two side plates are respectively connected to the two casting tools, and the two positioning ends are connected to the wire harness passing through the casting trough, and the clamping centers of the two positioning ends are collinear with the center of the casting trough. The present invention can tighten the wire harness and make its axis collinear with the central axis of the casting trough, so that the two ends of the wire harness and any position between the two ends can be in the center position of the casting, avoiding the deviation of the wire harness. Before the wire harness is cast, the wire harness is preliminarily fixed by the casting. After the formal casting, the front and rear castings can be integrated to avoid the deviation of the wire harness during the casting process.

Description

Technical Field

[0001] The invention relates to the technical field of wire harness processing, and in particular to a center positioning mechanism, a wire harness casting device and a wire harness casting method. Background Art

[0002] Wire harnesses are mainly divided into two forms: round wire harnesses and flat wire harnesses. Round wire harnesses are more commonly used. In order to meet certain specific usage requirements of wire harnesses, polyurethane glue is needed to be used to cast the wire harnesses so that multiple cables form an integral wire harness. However, the current casting tooling cannot overcome the following problems and cannot ensure that the wire harness is always evenly centered during the casting process.

[0003] 1) How to achieve the centering of the wiring harness at the end of the casting tooling

[0004] When the wire harness is placed in the casting tool, since the tool is a static, non-adjustable device, if the diameter of the hole at the tool end is too large, it will be difficult to center the wire harness and the relative error will be large. If the diameter of the hole at the tool end is too small, it will damage the wire and is not conducive to subsequent casting. It cannot effectively ensure that the wire harness at the casting tool end is in the center position.

[0005] 2) How to achieve uniform position of harness at both ends of tooling

[0006] The wire harness casting tooling has a certain length. If the wire harnesses at both ends of the casting tooling deviate from the center axis, the wire harnesses will be skewed as a whole in the casting tooling. And when the wire harnesses are long, they need to be cast in sections, which will affect the appearance and overall direction of the wire harnesses and may even cause the entire wire harness to be scrapped.

[0007] 3) How to avoid the problem of wire harness sticking to the wall due to its own weight and easy bending.

[0008] Based on the above three requirements, the wire harnesses at both ends of the tooling will be positioned at the center of the casting tooling during casting. Due to the wire harness's own gravity and its relatively softness, the middle part of the wire harness will still stick to the wall if it is not processed. Summary of the invention

[0009] In order to solve the deficiencies in the prior art, the present invention provides a center positioning mechanism, a wire harness casting device and a wire harness casting method, which solve the technical problem in the prior art that the wire harness casting position and the position of the casting after solidification are easily offset.

[0010] In order to achieve the above object, the present invention adopts the following technical solution:

[0011] A center positioning mechanism includes a side plate, a sliding plate and a clamping mechanism. There are two side plates, which are arranged opposite to each other and connected by a connecting piece. The sliding plate can be slidably connected to the side plates and a sliding push rod is connected between the two. The sliding push rod is used to adjust the position of the sliding plate relative to the side plate. The clamping mechanism includes a clamping push rod connected to the sliding plate by a thread, and a rotatable positioning end is provided at the end of the clamping push rod.

[0012] As a preferred solution of the present invention, the aforementioned center positioning mechanism: the sliding push rod is connected to the side plate through threads, and the end of the sliding push rod is connected to the sliding plate.

[0013] As a preferred solution of the present invention, the aforementioned center positioning mechanism: the side plate is provided with an arc section away from the center of the two side plates, the arc section is provided with a notch, the inner edge of the notch is provided with a slide groove, and the two sides of the sliding plate are connected to the slide groove.

[0014] As a preferred solution of the present invention, the aforementioned center positioning mechanism: the slide groove is also provided with a stopper for preventing the sliding plate from disengaging from the slide groove.

[0015] A wire harness casting device: comprising a casting tool and the aforementioned center positioning mechanism, there are two casting tools, and casting grooves are provided on the opposite surfaces of the two casting tools. When the casting grooves of the two casting tools are relatively connected, the two side plates are respectively connected to the two casting tools, and the two positioning ends are connected to the wire harness passing through the casting grooves, and the clamping centers of the two positioning ends are collinear with the center of the casting groove.

[0016] As a preferred solution of the present invention, the aforementioned wire harness casting device: a retaining ring is further provided at one end of the casting trough.

[0017] A wiring harness pouring method: follow these steps:

[0018] Arrange the wire harness to be cast and place it in the casting trough between two casting tools;

[0019] Fix two center positioning mechanisms at two ends of the casting tool respectively;

[0020] Clamp the wire harness to the positioning end, and tighten the wire harness to the center line of the casting trough by clamping the ejector rod and sliding the ejector rod;

[0021] Seal the gap between one end of the casting trough and the wiring harness;

[0022] Pour the casting into the interior of the casting trough;

[0023] After the cast material solidifies, remove the casting trough and positioning end.

[0024] As a preferred embodiment of the present invention, in the aforementioned wire harness casting method, the steps of arranging the wire harness to be cast are:

[0025] Arrange the cables of the harness to a naturally taut state and tie them up;

[0026] Pour a small amount of casting material on the wiring harness and remove the binding wire after the casting material solidifies.

[0027] As a preferred embodiment of the present invention, in the aforementioned wiring harness casting method, the casting material is polyurethane glue.

[0028] As a preferred embodiment of the present invention, in the aforementioned wire harness casting method, the gap between one end of the casting trough and the wire harness is sealed by a raw tape wrapped around the wire harness.

[0029] The beneficial effects achieved by the present invention are:

[0030] Compared with the prior art, the present invention can tighten the wire harness and make its axis colinear with the central axis of the casting trough, so that both ends of the wire harness and any position between the two ends can be located at the center of the casting, avoiding deviation of the wire harness.

[0031] The present invention preliminarily fixes the wire harness by the casting material before casting the wire harness. After the formal casting, the front and rear casting materials can be integrated to avoid the deviation of the wire harness during the casting process.

[0032] The clamping push rod of the present invention can not only clamp the wire harness, but also adjust the position of the wire harness relative to the casting trough to ensure that the wire harness is in the center of the casting trough before casting; in addition, the wire harness is tensioned by adjusting the distance between the clamping mechanisms at both ends driven by the sliding push rod to ensure that the wire harness is always stretched straight in the center of the casting trough. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is an axonometric diagram of the center positioning mechanism of the present invention;

[0034] Figure 2 It is an axonometric view of the casting tool of the present invention;

[0035] Figure 3 It is a working state diagram of the pouring method of the present invention;

[0036] The meaning of the accompanying numbers: 1-side plate; 2-side plate bolt; 3-sliding plate; 4-clamping push rod; 5-sliding push rod; 6-positioning end; 7-casting tool; 8-sealing device; 9-wiring harness; 10-casting; 11-arc segment; 12-chute; 13-stopper; 71-casting trough; 72-stop ring; 73-connecting hole. DETAILED DESCRIPTION

[0037] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0038] like Figure 1 As shown: This embodiment discloses a center positioning mechanism, including a side plate 1, a sliding plate 3 and a clamping mechanism. There are two side plates 1, the two side plates 1 are arranged opposite to each other and connected by a connecting piece, the sliding plate 3 can be slidably connected to the side plate 1 and a sliding push rod 5 is also connected between the two, the sliding push rod 5 is used to adjust the position of the sliding plate 3 relative to the side plate 1, the clamping mechanism includes a clamping push rod 4 connected to the sliding plate 3 by a thread, and a rotatable positioning end 6 is provided at the end of the clamping push rod 4, and the rotatable structure can adopt any one of the existing technologies.

[0039] Specifically, the sliding push rod 5 is connected to the side plate 1 through threads, and the end of the sliding push rod 5 is connected to the sliding plate 3. The sliding push rod 5 is used to adjust the position of the sliding plate 3 relative to the side plate 1 through threads.

[0040] The side panels 1 are provided with arc segments 11 away from the center of the two side panels 1, that is, when the two side panels 1 are connected together, the two arc segments 11 are arranged opposite to each other, the arc segments 11 are provided with notches, and the inner edge of the notches is provided with slide grooves 12, and the two sides of the sliding plate 3 are connected to the slide grooves 12. The slide grooves 12 are also provided with stoppers 13 for preventing the sliding plate 3 from being separated from the slide grooves 12, and the stoppers 13 are preferably arranged at the exit of the slide grooves 12.

[0041] The present embodiment also discloses a wiring harness casting device, which includes a casting tool 7 and the aforementioned center positioning mechanism of the present embodiment. There are two casting tools 7, and casting grooves 71 are provided on opposite surfaces of the two casting tools 7. At the same time, the two casting tools 7 are also provided with connecting holes 73 for connecting the two casting tools 7 together by screws.

[0042] When the casting troughs 71 of the two casting tools 7 are relatively connected, the two side panels 1 are respectively squeezed by the two casting tools 7, the two positioning terminals 6 are connected to the wiring harness passing through the casting trough 71, and the clamping centers of the two positioning terminals 6 are collinear with the center of the casting trough 71. In order to facilitate the rapid adjustment of the above-mentioned collinear relationship, the sliding push rod 5 of this embodiment is preferably provided with a scale for directly reading the distance between the end of the positioning terminal 6 and the sliding plate 3.

[0043] In order to facilitate sealing of one end of the casting trough 71 , a retaining ring 72 is further provided at one end of the casting trough 71 in this embodiment.

[0044] See also Figure 3 : This embodiment also discloses a wiring harness casting method, which is specifically performed according to the following steps:

[0045] The present invention is described by taking the center positioning mechanism for a circular wire harness as an example, but is not limited to a circular wire harness. Similarly, the cross-section of the casting trough 71 is not limited to a circle. In practical applications, the shape of the casting trough 71 can be adjusted according to the working object (wire harness).

[0046] First, arrange the wire harness to be cast and place it in the casting trough 71 between the two casting tools 7. The best steps to arrange the wire harness are: arrange each cable of the wire harness to a natural tension state, which means that each battery cell is in a similar tension state, and arrange each battery cell to make it as naturally straight as possible, avoid twisting, and tie all cables. Then pour a small amount of casting material on the tied wire harness, and remove the binding wire after the casting material solidifies.

[0047] Then, the two center positioning mechanisms are respectively fixed to the two ends of the casting tool 7, and the side panels are clamped with the two oppositely arranged casting tools 7 through the side panel bolts 2. Since the side panel 1 is provided with an arc segment 11, the casting tool 7 can be clamped by the arc segment 11. This has the advantage that the side panel 1 can be perpendicular to the casting tool 7, and the sliding direction of the sliding plate 3 can be parallel to the axis of the casting tool 7.

[0048] Then the wire harness is clamped on the positioning end 6, and the wire harness is tightened at the center line position of the casting trough 71 by the clamping push rod 4 and the sliding push rod 5. The clamping push rod 4 is used to adjust the axis position of the wire harness 9 relative to the casting trough 71, and the sliding push rod 5 is used to drive the sliding plate 3 to slide to achieve the tension of the wire harness.

[0049] Since both ends of the casting trough 71 are provided with openings, the gap between one end of the casting trough 71 and the wiring harness needs to be sealed before casting, and the sealed end is the end where the retaining ring 72 is located. The wiring harness 9 can be sealed by wrapping a raw tape, and the outer circle of the raw tape is slightly larger than the outer diameter of the casting trough 71, so that the raw tape can be inserted into the interior of the casting trough 71 to achieve reliable sealing, and the two casting troughs 71 constitute a casting cavity with one end open.

[0050] Then pour the casting material into the casting groove 71. The casting material of this embodiment can be polyurethane glue, and other materials can also be selected according to actual conditions. After the casting material is solidified, remove the casting groove 71 and the positioning end 6, so that the wiring harness 9 can be cast in the center of the polyurethane glue.

[0051] Compared with the prior art, this embodiment can tighten the wire harness 9 and make its axis colinear with the central axis of the casting trough 71, so that both ends of the wire harness 9 and any position between the two ends can be located at the center of the casting, avoiding the wire harness 9 from being offset.

[0052] In this embodiment, the wire harness is preliminarily fixed by the casting before the wire harness is cast. After the formal casting, the front and rear castings can be integrated to avoid the deviation of the wire harness during the casting process.

[0053] The clamping push rod 4 of the present embodiment can not only clamp the wire harness, but also adjust the position of the wire harness relative to the casting trough 71, to ensure that the wire harness 9 is in the center of the casting trough 71 before casting; in addition, the wire harness 9 is tensioned by driving the adjustment of the distance between the clamping mechanisms at both ends through the sliding push rod 5, to ensure that the wire harness is always stretched straight in the center of the casting trough 71.

[0054] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A wire harness casting device, characterized in that: It comprises a casting tool (7) and a center positioning mechanism, wherein there are two casting tools (7), and the opposite surfaces of the two casting tools (7) are provided with casting grooves (71); the center positioning mechanism comprises a side plate (1), a sliding plate (3) and a clamping mechanism, wherein there are two side plates (1), the two side plates (1) are arranged opposite to each other and connected by a connecting piece, the sliding plate (3) is slidably connected to the side plate (1), and a sliding push rod (5) is connected between the two, and the sliding push rod (5) is used to adjust the position of the sliding plate (3) relative to the side plate (1); the clamping mechanism comprises a clamping push rod (4) connected to the sliding plate (3) by threads, and the end of the clamping push rod (4) is provided with a rotatable positioning end (6); the sliding push rod (5) is connected to the side plate (1) by threads, and the end of the sliding push rod (5) is connected to the sliding plate (3); When the casting troughs (71) of the two casting tools (7) are connected relative to each other, the two side plates (1) are respectively connected to the two casting tools (7), the two positioning ends (6) are connected to the wiring harness passing through the casting trough (71), and the clamping centers of the two positioning ends (6) are collinear with the center of the casting trough (71).

2. A wire harness casting device according to claim 1, characterized in that: The side plates (1) are provided with arc segments (11) that are away from the centers of the two side plates (1), the arc segments (11) are provided with notches, the inner edges of the notches are provided with sliding grooves (12), and the two sides of the sliding plate (3) are connected to the sliding grooves (12).

3. A wire harness casting device according to claim 2, characterized in that: The slide groove (12) is also provided with a stopper (13) for preventing the sliding plate (3) from being disengaged from the slide groove (12).

4. A wire harness casting device according to claim 1, characterized in that: A retaining ring (72) is also provided at one end of the casting trough (71).

5. A wire harness casting method adapted to the wire harness casting device according to claim 1, characterized in that: Follow these steps: Arrange the wire harness to be cast and place it in the casting trough (71) between two casting tools (7); The two center positioning mechanisms are respectively fixed to the two ends of the casting tool (7); Clamp the wire harness to the positioning end (6), and tighten the wire harness to the center line position of the casting trough (71) by means of the clamping push rod (4) and the sliding push rod (5); sealing the gap between one end of the casting trough (71) and the wiring harness; Pouring the casting material into the interior of the casting trough (71); After the cast material solidifies, the casting trough (71) and the positioning end head (6) are removed.

6. A wire harness casting method according to claim 5, characterized in that: The finishing steps for the wiring harness to be cast are: Arrange the cables of the harness to a naturally taut state and tie them up; Pour a small amount of casting material on the wiring harness and remove the binding wire after the casting material solidifies.

7. A wire harness casting method according to claim 5 or 6, characterized in that: The casting material is polyurethane glue.

8. A wire harness casting method according to claim 6, characterized in that: The gap between one end of the casting trough (71) and the wire harness is sealed by a raw tape wrapped around the wire harness.

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