Wire harness splitting and unwinding device and control method

Abstract

The invention relates to the technical field of automobile wire harnesses, in particular to a wire harness splitting and unwinding device and a control method. The wire harness splitting and unwinding device comprises a rack unit, a threading unit and a plurality of protection units. An unwinding station arranged on the rack unit is used for placing bobbins. And the threading unit is positioned above the unwinding station. And a wire harness unwound by the bobbin upwards penetrates through the threading unit. The multiple protection units are distributed around the unwinding station. The protection unit comprises a mounting column and bristles, and the bristles are distributed on the peripheral face of the mounting column. The bristles are distributed in a first area and a second area, the bristles in the first area are perpendicular to the axis of the mounting column, the included angle between the bristles in the second area and the axis of the mounting column is an acute angle, and the vertical middle height of the first area is larger than that of the second area. The control method is applied to the wire harness splitting and unwinding device. Therefore, the problem that the wire harness is easy to swing and impact the surrounding equipment structure when being opened and unreeled is solved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile wiring harnesses, and in particular to a wiring harness unwinding device and a control method. Background Art

[0002] During the unwinding process of the automotive wiring harness, the wiring harness needs to be transported to the unwinding equipment through the unwinding device. During the unwinding process, the wiring harness is prone to swinging outward due to high-speed rotation or tension changes, causing the wiring harness to collide with surrounding equipment or structures, which may not only damage the surface of the wiring harness, but also affect production stability and equipment life. The traditional buffering method usually uses a fixed baffle for blocking, but because the baffle is a rigid structure, it cannot effectively absorb the impact force of the swinging of the wiring harness, which is easy to cause wear on the surface of the wiring harness. In addition, the swing amplitude and impact force of the wiring harness at different unwinding positions are different, and the fixed baffle cannot adapt to this dynamic change, resulting in uneven buffering effect. After long-term use, it may also be deformed or damaged due to frequent local impacts.

[0003] To solve the above problems, the prior art urgently needs a solution that can flexibly buffer the swing of the wire harness, which can not only effectively absorb the impact force, but also adapt to the dynamic changes of different unwinding positions, thereby reducing wire harness wear and increasing the service life of the equipment. Summary of the invention

[0004] In order to solve the problem that a wire harness is easily swung and hits surrounding equipment structures when it is unwound, the present invention provides a wire harness unwound device and a control method.

[0005] In a first aspect, the present invention provides a wire harness unwinding device, the wire harness unwinding device comprising: A frame unit, wherein an unwinding station is provided on the frame unit, and the unwinding station is used to place the bobbin; A threading unit, the threading unit is located above the unwinding station; when the wire drum is placed at the unwinding station, the wire bundle unwound by the wire drum passes upward through the threading unit; A plurality of protection units are arranged around the unwinding station; the protection units include a mounting post and bristles; the bristles cover the outer circumference of the mounting post; one end of the bristles is connected to the mounting post; the positions where the bristles are distributed include a first area and a second area; the bristles in the first area are perpendicular to the axis of the mounting post; the angle between the bristles in the second area and the axis of the mounting post is an acute angle, and the vertical middle height of the first area is higher than the vertical middle height of the second area.

[0006] In some embodiments, the position where the bristles are distributed also includes a third area; the bristles in the third area are perpendicular to the axis of the mounting column; the third area is located at the same height as the first area; the mounting column is rotatably connected to the rack unit; the distribution density of the bristles in the third area is greater than or equal to the distribution density of the bristles in the first area.

[0007] In some embodiments, the position where the bristles are distributed also includes a fourth area; the angle between the bristles in the fourth area and the axis of the mounting column is an acute angle; the fourth area and the second area are located at the same height; the distribution density of the bristles in the fourth area is greater than or equal to the distribution density of the bristles in the second area.

[0008] In some embodiments, the second area is located directly below the first area; and the fourth area is located directly below the third area.

[0009] In some embodiments, the bristles of the second region extend obliquely upward away from one end of the mounting post; and the bristles of the fourth region extend obliquely upward away from one end of the mounting post.

[0010] In some embodiments, the diameter of the mounting post gradually decreases in a vertical downward direction.

[0011] In a second aspect, the present invention provides a wire harness unwinding control method, the wire harness unwinding control method is applied to the wire harness unwinding device in the first aspect, the control method of the wire harness unwinding device comprises: Step S10, based on the fact that the wire harness unwinding device is in a working state, obtaining the state of the unwinding station; the unwinding station includes a standby state and an unwinding state; in the standby state, the unwinding station is in an empty state; in the unwinding state, there is a wire reel in the unwinding station; Step S20, based on the unwinding station being in the unwinding state, accumulating the unwinding time of the unwinding station; Step S30, based on the unwinding time being less than the first time, controlling the bristles of the first area to be disposed toward the unwinding station; when the unwinding time is less than the first time, the wire harness at the top end of the wire drum is in an unwinding state; Step S40, based on the fact that the unwinding time is greater than the first time and less than the second time, the bristles in the second area are controlled to be directed toward the unwinding station; the second time is greater than the first time; when the unwinding time is greater than the first time and less than the second time, the wire harness at the bottom end of the bobbin is in an unwinding state.

[0012] In some embodiments, the bristle distribution position further includes a third area; the bristles in the third area are perpendicular to the axis of the mounting column; the third area is at the same height as the first area; the mounting column is rotatably connected to the rack unit; the distribution density of the bristles in the third area is greater than or equal to the distribution density of the bristles in the first area; The control method of the wire harness unwinding device also includes: Step S50, based on the fact that the unwinding time is greater than the second time and less than the third time, the bristles in the third area are controlled to be directed toward the unwinding station; the third time is greater than the second time; when the unwinding time is greater than the second time and less than the third time, the wire bundle in the inner layer at the top end of the wire drum is in an unwinding state.

[0013] In some embodiments, the bristles are distributed in a fourth region; the angle between the bristles in the fourth region and the axis of the mounting post is an acute angle; the fourth region and the second region are located at the same height; the distribution density of the bristles in the fourth region is greater than or equal to the distribution density of the bristles in the second region; The control method of the wire harness unwinding device also includes: Step S60, based on the fact that the unwinding time is greater than the third time and less than the fourth time, the bristles in the fourth area are controlled to be directed toward the unwinding station; the fourth time is greater than the third time; when the unwinding time is greater than the third time and less than the fourth time, the wire harness in the inner layer at the bottom end of the wire drum is in an unwinding state.

[0014] In some embodiments, step S40 includes: Step S41, based on the fact that the unwinding time is greater than the first time and less than the second time, the bristles in the second area are controlled to be directed toward the unwinding station; the second time is greater than the first time; when the unwinding time is greater than the first time and less than the second time, the wire harness at the bottom end of the wire drum is in an unwinding state; Step S42, based on the unwinding time reaching the second time, the unwinding time is reset to zero and accumulated again; Step S43, repeating steps S30 to S40 until the number of repetitions reaches a first preset number; The step S60 comprises: Step S61, based on the fact that the unwinding time is greater than the third time and less than the fourth time, the bristles of the fourth area are controlled to be directed toward the unwinding station; the fourth time is greater than the third time; when the unwinding time is greater than the first time and less than the second time, the wire harness of the outer layer at the bottom end of the wire drum is in an unwinding state; when the unwinding time is greater than the third time and less than the fourth time, the wire harness of the inner layer at the bottom end of the wire drum is in an unwinding state; Step S62, based on the unwinding time reaching the fourth time, calling back the unwinding time to the second time and continuing to accumulate; Step S43, repeating steps S50 to S60 until the number of repetitions reaches a second preset number of times.

[0015] In order to solve the problem that the wire harness is easily swung and hits the surrounding equipment structure when unwinding, the present invention has the following advantages: The partitioned flexible buffer design is adopted, and the flexible bristle protection unit surrounding the unwinding station replaces the traditional rigid baffle to effectively solve the problem of wire harness swinging. The protection unit is divided into two areas: the upper vertical bristles provide omnidirectional buffering to match the area with less swinging force in the upper half of the wire barrel; the lower bristles use the force dispersion characteristics of the inclination angle and are specially designed for the lower half of the wire harness with greater impact force, which enhances durability while achieving gradient absorption of impact force. Combined with the axial guide constraint of the threading unit, this solution forms a three-dimensional protection system, which not only avoids damage to the surface of the wire harness, but also significantly extends the life of the equipment by adapting to dynamic impact in different areas, achieving a technological breakthrough from rigid anti-collision to flexible buffering. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a wire harness unwinding device according to an embodiment is shown; Figure 2 Shows Figure 1 A schematic diagram of the structure of the bobbin in FIG. Figure 3 A schematic flow chart of a method for controlling wire harness unwinding and unwinding is shown in one embodiment.

[0017] Reference numerals: 10 rack unit; 11 wire drum; 20 threading unit; 30 protection unit; 31 mounting column; 32 brush bristles. DETAILED DESCRIPTION

[0018] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, rather than implying any limitation on the scope of the present disclosure.

[0019] As used herein, the term "including" and its variants are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "based at least in part on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal" and the like is based on the orientation or position relationship shown in the accompanying drawings. These terms are mainly for better describing the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to being used to indicate an orientation or position relationship, some of the above terms may also be used to indicate other meanings, such as the term "upper" may also be used to indicate a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to the specific circumstances. In addition, the terms "install", "set", "provided with", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0020] During the unwinding process, automotive wiring harnesses are prone to swinging outwards and colliding with surrounding equipment, which may not only damage the surface of the wiring harness, but also affect production stability and equipment life. The traditional solution usually uses a fixed baffle to block it, but the baffle, as a rigid structure, cannot effectively absorb the impact of the wiring harness swinging, and the buffering effect is insufficient. In addition, the swing amplitude and impact force of the wiring harness will change during the unwinding process, and the fixed baffle cannot adapt to this dynamic change, resulting in uneven buffering effect, and the fixed baffle is prone to deformation or damage.

[0021] In order to solve the above problems, a wire harness unwinding device is provided in this embodiment, such as Figure 1 As shown, the wire harness unwinding device comprises a frame unit 10, a threading unit 20 and a plurality of protection units 30. The frame unit 10 is provided with an unwinding station for placing a wire drum 11 on which a wire harness is wound.

[0022] The threading unit 20 is located above the unwinding station, and the threading unit 20 can be in the shape of a hollow cylinder. When the wire drum 11 is placed in the unwinding station, the wire harness unwound by the wire drum 11 can pass through the threading unit 20 upwards, and the threading unit 20 can be coaxially arranged with the wire drum 11. During the unwinding process of the wire harness, the wire harness is unwound from one axial end of the wire drum 11. A preferred embodiment is that the wire drum 11 is placed vertically, and one end of the wire harness is unwound from the top of the wire drum 11 through the threading unit 20. The restriction of the wire harness lead-out position by the threading unit 20 can limit the radial swinging of the wire harness detached from the wire drum 11 to a certain extent. As the wire harness is unwound from top to bottom, the wire harness at the bottom end of the wire drum 11 is more relaxed when unwound because it is farther away from the threading unit 20 at the top, and is dragged around the bottom of the wire drum 11 due to gravity. During the unwinding process of the wire harness, the wire harness will be intermittently pulled a set distance and then cut, so that the wire harness will be swung outward each time it is pulled, especially when the wire harness at the bottom of the winding drum 11 is unwound, the wire harness is dragged longer by gravity, resulting in a more severe swinging impact.

[0023] A plurality of protection units 30 may be distributed around the unwinding station. The protection unit 30 may include a mounting post 31 and bristles 32. The bristles 32 are distributed on the outer circumference of the mounting post 31. When the wire harness is unwinding, it can hit the bristles 32 when rotating, thereby playing a buffering role. One end of the bristles 32 is connected to the mounting post 31, and the positions where the bristles 32 are distributed include a first area and a second area. The bristles 32 in the first area may be perpendicular to the axis of the mounting post 31, so that a good buffering effect can be achieved for the wire harness thrown onto the mounting post 31 in all directions; the bristles 32 in the second area may be at an acute angle to the axis of the mounting post 31, so that the bristles 32 in the second area can better disperse and buffer the force through their own inclination angle, and have better durability than the bristles 32 in the first area. The vertical middle height of the first area is higher than the vertical middle height of the second area, so that during the unwinding process of the wire harness, the wire harness located in the upper half of the wire drum 11 can hit the first area when it is swung, and the wire harness located in the lower half of the wire drum 11 can hit the second area when it is swung. The second area with greater durability can withstand the swinging of the part of the wire harness with greater force, so that the overall life of the protection unit 30 can be more balanced, avoiding the situation where half of the protection unit 30 is damaged and the other half is still working.

[0024] The protection unit 30 is divided into two areas, the upper vertical bristles 32 provide omnidirectional buffering, matching the area with less swinging force in the upper half of the wire barrel 11; the lower bristles 32 use the force dispersion characteristics of the inclination angle, and are designed for the lower half of the wire harness with greater impact force, enhancing durability while achieving gradient absorption of impact force. Combined with the axial guide constraint of the threading unit 20, this solution forms a three-dimensional protection system, which not only avoids damage to the wire harness surface, but also significantly extends the life of the equipment by adapting the dynamic impact force in different areas.

[0025] In this embodiment, the position where the bristles 32 are distributed also includes a third area. The bristles 32 in the third area are perpendicular to the axis of the mounting post 31. The third area can be at the same height as the first area, and the third area and the first area can be set at a certain angle on the cross section along the axial direction. The mounting post 31 is rotatably connected to the rack unit 10, and the mounting post 31 can rotate around the axis, so that different distribution areas of the bristles 32 are rotated to the side close to the bobbin 11. The distribution density of the bristles 32 in the third area can be greater than or equal to the distribution density of the bristles 32 in the first area. The third area with a larger distribution density of the bristles 32 can have a better buffering effect than the first area, so that when the wire harness located in the upper half of the bobbin 11 is unwound to the inner layer, the mounting post 31 can be rotated to the third area, and the bristles 32 with better buffering effect are used to buffer the wire harness with stronger striking force in the lower half of the bobbin 11 due to the large swinging space, so as to avoid the excessive loss of the local bristles 32, which requires the replacement of the overall protective unit 30, so that the loss degree of the bristles 32 on the mounting post 31 can be consistent.

[0026] In this embodiment, the distribution position of the bristles 32 also includes a fourth area. The angle between the bristles 32 in the fourth area and the axis of the mounting post 31 is an acute angle. The fourth area is at the same height as the second area, and the fourth area and the second area can be set at a certain angle in the cross section along the axial direction. The distribution density of the bristles 32 in the fourth area is greater than or equal to the distribution density of the bristles 32 in the second area. The fourth area with a larger distribution density of the bristles 32 can have a better buffering effect than the second area, so that when the wire bundle located in the lower half of the bobbin 11 is unwound to the inner layer, the mounting post 31 can be rotated to the fourth area, and the bristles 32 with better buffering effect can be used to buffer the wire bundle with stronger swinging force.

[0027] In this embodiment, if Figure 2 As shown, the second area can be located directly below the first area; the fourth area can be located directly below the third area. When unwinding the wire harness of the outer layer of the bobbin 11, the first area and the second area can be directed toward the bobbin 11 at the same time. When unwinding the wire harness of the inner layer of the bobbin 11, the third area and the fourth area can be directed toward the bobbin 11 at the same time. Thereby, the number of rotations of the protection unit 30 can be reduced, and reducing the movement of the protection unit 30 can improve the stability of the equipment to a certain extent. The third area and the first area can each occupy 180° in the axial section; the fourth area and the second area can each occupy 180° in the axial section, so that the working area facing the wire roll can be larger, so that the buffering effect is better.

[0028] In this embodiment, the bristles 32 in the second region can extend upwardly and away from one end of the mounting post 31; the bristles 32 in the fourth region can also extend upwardly and away from one end of the mounting post 31. When the wire harness hits the bristles 32 upwardly and close to the mounting post 31, the bristles 32 can restore a certain degree of angle under the action of gravity; when the wire harness hits the bristles 32 to rotate downward, the bristles 32 can also remain horizontal or tilted downward, so that the buffering performance of the bristles 32 can remain stable to a certain extent.

[0029] In the present embodiment, the diameter of the mounting post 31 gradually decreases in the vertical downward direction, so that the mounting post 31 can be disposed closer to the bobbin 11 to reduce the occupied space of the shield unit 30 .

[0030] In this embodiment, a control method for a wire harness unwinding device is provided. The control method for a wire harness unwinding device is applied to any of the wire harness unwinding devices in the above embodiments, such as Figure 3 As shown, the control method of the wire harness unwinding device may include steps S10 to S40, and each step is described in detail as follows: Step S10, based on the fact that the wire harness unwinding device is in working state, the state of the unwinding station is obtained, so as to determine whether the use requirements of the protection unit 30 are met. The unwinding station includes a standby state and an unwinding state. In the standby state, the unwinding station is in an empty state, and no protection control is required at this time; in the unwinding state, there is a wire drum 11 in the unwinding station, and the wire drum 11 can be continuously rotated and unwound.

[0031] Step S20, based on the unwinding station being in the unwinding state, the unwinding time of the unwinding station is accumulated, and according to the unwinding time, it can be determined which part of the wire harness of the wire drum 11 is being unwound at this time.

[0032] Step S30, based on the unwinding time being less than the first time being, the bristles 32 in the first area are controlled to be disposed toward the unwinding station. When the unwinding time is less than the first time being, the wire bundle at the top of the wire drum 11 is in an unwinding state, at which time the released wire bundle has a smaller rotation space and a smaller striking force, so that the vertical bristles 32 in the first area can buffer the wire bundle to achieve a better effect.

[0033] Step S40, based on the unwinding time being greater than the first time and less than the second time, control the bristles 32 of the second area to face the unwinding station. The second time is greater than the first time. When the unwinding time is greater than the first time and less than the second time, the wire harness at the bottom of the bobbin 11 is in an unwinding state. At this time, the released wire harness is far away from the threading unit 20, and the rotation space is large, which will generate a greater impact force. Therefore, the inclined bristles 32 of the second area are used to withstand the impact, and the inclined bristles 32 can be reset under the action of gravity to achieve the effect of extending the service life of the protective unit 30.

[0034] In this embodiment, the position where the bristles 32 are distributed also includes a third area. The bristles 32 in the third area are perpendicular to the axis of the mounting post 31. The third area can be at the same height as the first area, and the third area and the first area can be arranged at a certain angle on the cross section along the axial direction. The mounting post 31 is rotatably connected to the frame unit 10, and the mounting post 31 can rotate around the axis, so that different distribution areas of the bristles 32 are rotated to the side close to the bobbin 11. The spacing between the protection unit 30 and the unwinding station is adjustable, so that adaptive adjustment can be made according to work needs. The distribution density of the bristles 32 in the third area is greater than or equal to the distribution density of the bristles 32 in the first area. The third area with a larger distribution density of the bristles 32 can have a better buffering effect than the first area, and the service life is also higher, so that when the wire harness located in the upper half of the bobbin 11 is unwound to the inner layer, the mounting post 31 can be rotated to the third area, and the bristles 32 with better buffering effect are used to buffer the wire harness with stronger swinging force. When the density of the bristles 32 in the third area is equal to that in the first area, rotating to the third area can also improve the utilization rate and service life of the entire protection unit 30.

[0035] The control method of the wire harness unwinding device may further include step S50, which is specifically described as follows: Step S50, based on the unwinding time being greater than the second time being and less than the third time being, control the bristles 32 of the third area to face the unwinding station. The third time being greater than the second time being. When the unwinding time being greater than the second time being and less than the third time being, the wire harness of the inner layer at the top of the wire drum 11 is in an unwinding state. At this time, because the diameter of the wire drum 11 is reduced, the swinging space of the wire harness is increased, and the striking force is also increased accordingly. Therefore, the bristles 32 of the third area with better buffering effect are allowed to withstand the striking, so that the loss degree of the bristles 32 on both sides of the mounting column 31 can be relatively balanced, thereby extending the service life of the protective unit 30 as a whole.

[0036] In this embodiment, the distribution position of the bristles 32 also includes the fourth area. The angle between the bristles 32 in the fourth area and the axis of the mounting post 31 is an acute angle. The fourth area is at the same height as the second area, and the fourth area and the second area can be set at a certain angle on the cross section along the axial direction. The distribution density of the bristles 32 in the fourth area is greater than or equal to the distribution density of the bristles 32 in the second area. The fourth area with a larger distribution density of the bristles 32 can have a better buffering effect than the second area, and the service life is also higher. Therefore, when the wire harness located in the lower half of the bobbin 11 is unwound to the inner layer, the mounting post 31 can be rotated to the fourth area, and the bristles 32 with better buffering effect are used to buffer the wire harness with stronger swinging force. When the density of the bristles 32 in the fourth area is equal to that in the second area, rotating to the fourth area can also improve the utilization rate and service life of the entire protective unit 30.

[0037] The control method of the wire harness unwinding device also includes: Step S60, based on the unwinding time being greater than the third time and less than the fourth time, control the bristles 32 in the fourth area to face the unwinding station. The fourth time is greater than the third time. When the unwinding time is greater than the third time and less than the fourth time, the wire harness in the inner layer at the bottom of the bobbin 11 is in an unwinding state. At this time, because the diameter of the bobbin 11 is reduced, the swinging space of the wire harness is increased, and the striking force is also increased. Therefore, the bristles 32 in the fourth area with better buffering effect are allowed to withstand the impact, so that the loss of the bristles 32 on both sides of the mounting column 31 can be relatively balanced, thereby extending the service life of the protective unit 30 as a whole.

[0038] In this embodiment, the inner and outer layers of the wire harness material on the wire drum 11 are wound with multiple layers, for example, 3 layers for the inner layer and 3 layers for the outer layer, so as to increase the total amount of wire harness wound by the wire drum 11. When the axis of the wire drum 11 is placed vertically, each layer of wire harness is wound from top to bottom.

[0039] Step S40 may include steps S41 to S43, and each step is described in detail as follows: Step S41, based on the unwinding time being greater than the first time and less than the second time, control the bristles 32 of the second area to face the unwinding station. The second time is greater than the first time. When the unwinding time is greater than the first time and less than the second time, the wire harness at the bottom of the bobbin 11 is in an unwinding state. At this time, the released wire harness is far away from the threading unit 20, and the rotation space is large, which will generate a greater impact force. Therefore, the inclined bristles 32 of the second area are used to withstand the impact, and the inclined bristles 32 can be reset under the action of gravity to achieve the effect of extending the service life of the protective unit 30.

[0040] Step S42, based on the unwinding time reaching the second time, that is, one of the outer layers of the wire harness is unwound, the next layer of the wire harness is unwound from the top of the wire roll, and the unwinding time can be reset to zero and accumulated again. The wire harness can have multiple layers on the bobbin 11, and both the outer layer and the inner layer have multiple layers. Before the wire harness is unwound to the inner layer, only the first area and the second area can be used for buffering.

[0041] Step S43, repeating steps S30 to S40 until the number of repetitions reaches a first preset number, which may be the number of outer wire harness layers, such as 2 layers, 3 layers, or 4 layers, etc. At this time, the unwinding of the wire harness gradually approaches the inner layer, and the striking force of the wire harness when it is swung gradually increases.

[0042] Step S60 may include step S61 to step S62, and each step is described in detail as follows: Step S61, based on the unwinding time being greater than the third time being greater than the fourth time being greater than the fourth time being, control the bristles 32 of the fourth area to be directed toward the unwinding station. The fourth time being greater than the third time being greater than the third time being. When the unwinding time being greater than the first time being greater than the second time being greater than the second time being, the wire harness of the outer layer at the bottom end of the wire drum 11 is in an unwinding state, and the bristles 32 of the second area are used to buffer the wire harness; when the unwinding time being greater than the third time being greater than the fourth time being greater than the fourth time being, the wire harness of the inner layer at the bottom end of the wire drum 11 is in an unwinding state, and the impact force of the wire harness when it is swung is relatively large, and the fourth area with denser bristles 32 is used for buffering, so that the service life of the bristles 32 of the second area and the fourth area can be made consistent.

[0043] In step S62, based on the unwinding time reaching the fourth time, a layer of the wire harness is unwound, the unwinding time is adjusted back to the second time and continuously accumulated, and the bristles 32 in the third area and the fourth area are used to buffer the wire harnesses of the inner layer at the top end of the wire drum 11 and the inner layer at the bottom end of the wire drum 11, respectively, so that the degree of loss in each area of ​​the protective unit 30 tends to be consistent, thereby improving the working efficiency of the protective unit 30 within its service life.

[0044] Step S43, repeating steps S50 to S60 until the number of repetitions reaches a second preset number, and the wire harness unwinding is completed. The second preset number can be the number of layers of the inner wire harness, which can be 2 layers, 3 layers or 4 layers.

[0045] It should be understood that the “present embodiment” mentioned in the present invention is based on the technical points currently described, and multiple “present embodiments” may be the same embodiment or different embodiments.

[0046] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present disclosure, and in actual applications, various changes may be made thereto in form and detail without departing from the scope of the present disclosure.

Claims

1. A wire harness unwinding device, characterized in that: The wire harness unwinding device comprises: A frame unit, wherein an unwinding station is provided on the frame unit, and the unwinding station is used to place the bobbin; A threading unit, the threading unit is located above the unwinding station; when the wire drum is placed at the unwinding station, the wire bundle unwound by the wire drum passes upward through the threading unit; A plurality of protection units are arranged around the unwinding station; the protection units include a mounting post and bristles; the bristles cover the outer circumference of the mounting post; one end of the bristles is connected to the mounting post; the positions where the bristles are distributed include a first area and a second area; the bristles in the first area are perpendicular to the axis of the mounting post; the angle between the bristles in the second area and the axis of the mounting post is an acute angle, and the vertical middle height of the first area is higher than the vertical middle height of the second area.

2. A wire harness unwinding device according to claim 1, characterized in that: The position where the bristles are distributed also includes a third area; the bristles in the third area are perpendicular to the axis of the mounting column; the third area is located at the same height as the first area; the mounting column is rotatably connected to the rack unit; the distribution density of the bristles in the third area is greater than or equal to the distribution density of the bristles in the first area.

3. A wire harness unwinding device according to claim 2, characterized in that: The position where the bristles are distributed also includes a fourth area; the angle between the bristles in the fourth area and the axis of the mounting column is an acute angle; the fourth area and the second area are located at the same height; the distribution density of the bristles in the fourth area is greater than or equal to the distribution density of the bristles in the second area.

4. A wire harness unwinding device according to claim 3, characterized in that: The second area is located directly below the first area; and the fourth area is located directly below the third area.

5. The wire harness unwinding device according to claim 3, characterized in that: The bristles in the second region extend obliquely upward away from one end of the mounting post; and the bristles in the fourth region extend obliquely upward away from one end of the mounting post.

6. The wire harness unwinding device according to claim 3, characterized in that: The diameter of the mounting column gradually decreases in a vertical downward direction.

7. A control method for a wire harness unwinding device, applied to the wire harness unwinding device according to any one of claims 1 to 6, characterized in that: The control method of the wire harness unwinding device comprises: Step S10, based on the fact that the wire harness unwinding device is in a working state, obtaining the state of the unwinding station; the unwinding station includes a standby state and an unwinding state; in the standby state, the unwinding station is in an empty state; in the unwinding state, there is a wire reel in the unwinding station; Step S20, based on the unwinding station being in the unwinding state, accumulating the unwinding time of the unwinding station; Step S30, based on the unwinding time being less than the first time, controlling the bristles of the first area to be disposed toward the unwinding station; when the unwinding time is less than the first time, the wire harness at the top end of the wire drum is in an unwinding state; Step S40, based on the fact that the unwinding time is greater than the first time and less than the second time, the bristles in the second area are controlled to be directed toward the unwinding station; the second time is greater than the first time; when the unwinding time is greater than the first time and less than the second time, the wire harness at the bottom end of the bobbin is in an unwinding state.

8. The control method of the wire harness unwinding device according to claim 7, characterized in that: The bristles distribution position also includes a third area; the bristles in the third area are perpendicular to the axis of the mounting column; the third area is at the same height as the first area; the mounting column is rotatably connected to the rack unit; the distribution density of the bristles in the third area is greater than or equal to the distribution density of the bristles in the first area; The control method of the wire harness unwinding device also includes: Step S50, based on the unwinding time being greater than the second time and less than the third time, controlling the bristles in the third area to face the unwinding station; When the third time length is greater than the second time length and the unwinding time length is greater than the second time length and less than the third time length, the wire harness in the inner layer at the top end of the wire barrel is in an unwinding state.

9. A control method for a wire harness unwinding device according to claim 8, characterized in that: The bristles distribution position also includes a fourth area; the angle between the bristles in the fourth area and the axis of the mounting column is an acute angle; the fourth area and the second area are located at the same height; the distribution density of the bristles in the fourth area is greater than or equal to the distribution density of the bristles in the second area; The control method of the wire harness unwinding device also includes: Step S60, based on the unwinding time being greater than the third time and less than the fourth time, controlling the bristles of the fourth area to face the unwinding station; The fourth time length is greater than the third time length; when the unwinding time length is greater than the third time length and less than the fourth time length, the wire harness in the inner layer at the bottom end of the wire drum is in an unwinding state.

10. A control method for a wire harness unwinding device according to claim 9, characterized in that: The step S40 comprises: Step S41, based on the fact that the unwinding time is greater than the first time and less than the second time, the bristles in the second area are controlled to be directed toward the unwinding station; the second time is greater than the first time; when the unwinding time is greater than the first time and less than the second time, the wire harness at the bottom end of the wire drum is in an unwinding state; Step S42, based on the unwinding time reaching the second time, the unwinding time is reset to zero and accumulated again; Step S43, repeating steps S30 to S40 until the number of repetitions reaches a first preset number; The step S60 comprises: Step S61, based on the fact that the unwinding time is greater than the third time and less than the fourth time, the bristles of the fourth area are controlled to be directed toward the unwinding station; the fourth time is greater than the third time; when the unwinding time is greater than the first time and less than the second time, the wire harness of the outer layer at the bottom end of the wire drum is in an unwinding state; when the unwinding time is greater than the third time and less than the fourth time, the wire harness of the inner layer at the bottom end of the wire drum is in an unwinding state; Step S62, based on the unwinding time reaching the fourth time, calling back the unwinding time to the second time and continuing to accumulate; Step S43, repeating steps S50 to S60 until the number of repetitions reaches a second preset number of times.

Images