Plastic coating device for automobile wire harness

Abstract

The utility model relates to the technical field of plastic coating molds, in particular to an automobile wire harness plastic coating device which comprises a mold body, a through hole and a communicating pipe, a first mold cavity is formed in one side of the outer wall of the upper end of the mold body, and third mold cavities distributed in parallel at equal intervals are formed in the outer wall of the side, away from the first mold cavity, of the mold body; a through hole is formed in one side of the lower end of the inner wall of the third mold cavity, a plug is arranged in the through hole, a limiting plate is installed at the lower end of the outer wall of the plug, communicating pipes distributed in parallel at equal intervals are installed on the outer wall of the lower end of the mold body, and a push rod body is installed on one side of the lower end of the inner wall of each communicating pipe. A sprue gate is formed in one side of the lower end of the inner wall of the first mold cavity, branch wire harnesses are fixed, the position of the branch wire harnesses in the third mold cavity is kept stable, repeated adjustment of workers is avoided, the placement efficiency of the wire harnesses is improved, and therefore the plastic coating efficiency of the wire harnesses can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic coating molds, in particular to a plastic coating device for automobile wiring harnesses. Background Art

[0002] The automotive wiring harness is the network body of the automotive circuit. The main components of the automotive wiring harness include wires, terminals, sheaths, and connectors. Since there are main lines and branch lines in the wiring harness, the branch points of the wiring harness are plastic-coated. Wire harness plastic coating is a process for protecting and insulating the wire harness during the production process of the wiring harness. The wiring harness is formed by a combination of several copper core wires. During the processing and production of the wiring harness, each copper core wire needs to be plastic-coated after being entangled with each other. After the wiring harness is plastic-coated, multiple wiring harnesses must be plastic-coated as a whole.

[0003] Although the overmolding device in the prior art has many benefits during use, it still has the following problems. Since the wiring harness itself has a certain elasticity, when the branch wiring harness and the main wiring harness are bent inside the overmolding mold, the branch wiring harness will be displaced due to its own elasticity, affecting the position stability of the wiring harness inside the mold cavity. Manual adjustment is required by the staff, affecting the overmolding efficiency of the wiring harness. Utility Model Content

[0004] In view of the problems in the prior art, the utility model provides a plastic coating device for automobile wiring harness.

[0005] The technical solution adopted by the utility model to solve its technical problems is a plastic-coating device for automobile wiring harnesses, comprising a mold body, a through hole and a connecting pipe, a first mold cavity is provided on one side of the outer wall of the upper end of the mold body, a third mold cavity is provided on the outer wall of the mold body away from the first mold cavity and is equidistantly and parallelly distributed, a through hole is provided on the lower end of the inner wall of the third mold cavity, a plug is provided inside the through hole, a limiting plate is installed on the lower end of the outer wall of the plug, connecting pipes are installed on the outer wall of the lower end of the mold body and equidistantly and parallelly distributed, a push rod body is installed on the lower end of the inner wall of the connecting pipe, and a pouring port is provided on the lower end of the inner wall of the first mold cavity.

[0006] By adopting the above technical solution, the inside of the through hole is in a negative pressure state, so that the branch wiring harness is adsorbed inside the third mold cavity. After the mold body is closed, the molten material flows into the first mold cavity, the second mold cavity and the third mold cavity respectively through the pouring gate, thereby realizing the plastic coating processing of the internal wiring harness.

[0007] Specifically, second mold cavities are opened on both sides of the outer wall of the upper end of the mold body, the second mold cavity is located between the third mold cavities, and the first mold cavity is communicated with the second mold cavity and the third mold cavity respectively.

[0008] By adopting the above technical solution, the wiring harness is placed inside the first mold cavity, the second mold cavity and the third mold cavity respectively, the placement position of the wiring harness is restricted, and the molten material enters the first mold cavity, the second mold cavity and the third mold cavity respectively through the pouring gate, so that the wiring harness can be plastic-coated.

[0009] Specifically, the inner wall of the through hole is designed to be convex, and the shape of the upper end face of the plug is adapted to the shape of the inner wall of the third mold cavity.

[0010] By adopting the above technical solution, the branch wiring harness is fixed inside the third mold cavity through negative pressure adsorption inside the through hole, which can fix the branch wiring harness, and the plug can block the through hole to maintain the integrity of the inner wall of the third mold cavity.

[0011] Specifically, a sealing ring is fixedly attached to the outer wall of the upper end of the limiting plate, and the sealing ring is in contact with the inner wall of the through hole.

[0012] By adopting the above technical solution, the limiting plate limits the moving distance of the plug, and the sealing between the plug and the through hole is improved by the sealing ring and the limiting plate, thereby ensuring the blocking sealing of the through hole.

[0013] Specifically, the communicating tube corresponds to the through hole in position, and the inner diameter of the communicating tube is consistent with the inner diameter of the through hole.

[0014] By adopting the above technical solution, the gas inside the through hole can flow into the connecting tube, thereby extracting the gas inside the through hole, so that the inside of the through hole can be in a negative pressure state.

[0015] Specifically, an exhaust pipe is plugged and installed on the outer wall of one side of the connecting pipe, and the exhaust pipe is connected with the inside of the through hole through the connecting pipe.

[0016] By adopting the above technical solution, the exhaust pipe is connected to an external vacuum pump, and the vacuum pump can extract and discharge the gas inside the through hole through the exhaust pipe and the connecting pipe, so that the inside of the through hole is under negative pressure, thereby being able to adsorb and fix the branch wire harness inside the third mold cavity.

[0017] Specifically, a connecting rod is installed on the outer wall of the lower end of the plug, and the outer wall of the lower end of the connecting rod is connected to the outer wall of the upper end of the push rod body.

[0018] By adopting the above technical solution, the push rod body can drive the connecting rod to move vertically, thereby adjusting the position of the plug inside the through hole, so that the plug can block the through hole in a controlled manner.

[0019] Beneficial effects of the utility model:

[0020] The utility model describes an automobile wiring harness plastic-coating device in which the interior of the through-hole is in a negative pressure state, so that the branch wiring harness is adsorbed inside the third mold cavity, the branch wiring harness is fixed, and the position of the branch wiring harness inside the third mold cavity is kept stable, avoiding repeated adjustments by staff, improving the placement efficiency of the wiring harness, and thus improving the plastic-coating efficiency of the wiring harness.

[0021] The utility model discloses an automobile wiring harness plastic coating device. After the mold body is closed, the molten material flows into the first mold cavity, the second mold cavity and the third mold cavity respectively through the pouring gate, thereby realizing the plastic coating processing of the internal wiring harness. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is a schematic diagram of the appearance of the mold body structure of the present utility model;

[0024] Figure 2 This is a partial cross-sectional schematic diagram of the mold body structure of the present utility model;

[0025] Figure 3 It is a partially enlarged schematic diagram of the through-hole structure of the utility model;

[0026] Figure 4 It is an enlarged schematic diagram of the connecting pipe structure of the present utility model.

[0027] In the figure: 1. mold body; 11. first mold cavity; 12. second mold cavity; 13. third mold cavity; 14. pouring gate; 2. through hole; 21. plug; 22. limit plate; 23. connecting rod; 3. connecting pipe; 31. exhaust pipe; 32. push rod body. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0029] In order to save manpower and improve efficiency, as an embodiment of the present invention, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4As shown, the utility model describes an automotive wiring harness plastic coating device, comprising a mold body 1, a through hole 2 and a connecting pipe 3. A first mold cavity 11 is provided on one side of the outer wall of the upper end of the mold body 1, and a third mold cavity 13 is provided on the outer wall of the mold body 1 away from the first mold cavity 11. The third mold cavity 13 is provided on one side of the lower end of the inner wall of the third mold cavity 13. A through hole 2 is provided on one side of the lower end of the inner wall, and a plug 21 is provided inside the through hole 2. A limiting plate 22 is installed on the lower end of the outer wall of the plug 21. The outer wall of the lower end of the mold body 1 is installed with connecting pipes 3 that are equidistant and parallel. A push rod body 32 is installed on one side of the lower end of the inner wall of the connecting pipe 3, and a pouring gate 14 is provided on one side of the lower end of the inner wall of the first mold cavity 11.

[0030] When in use, the inside of the through hole 2 is in a negative pressure state, so that the branch wiring harness is adsorbed inside the third mold cavity 13. After the mold body 1 is closed, the molten material flows into the first mold cavity 11, the second mold cavity 12 and the third mold cavity 13 respectively through the pouring port 14, thereby realizing the plastic coating processing of the internal wiring harness.

[0031] For overmolding, for example, Figure 1 As shown, second mold cavities 12 are opened on both sides of the outer wall of the upper end of the mold body 1. The second mold cavity 12 is located between the third mold cavities 13. The first mold cavity 11 is connected to the second mold cavity 12 and the third mold cavity 13 respectively.

[0032] When in use, the wiring harness is placed inside the first mold cavity 11, the second mold cavity 12 and the third mold cavity 13 respectively, which limits the placement position of the wiring harness, and the molten material enters the first mold cavity 11, the second mold cavity 12 and the third mold cavity 13 respectively through the pouring gate 14, so that the wiring harness can be plastic-coated.

[0033] In order to fix the branch harness, for example, Figure 3 As shown, the inner wall of the through hole 2 is designed to be convex, and the shape of the upper end surface of the plug 21 is adapted to the shape of the inner wall of the third mold cavity 13.

[0034] When in use, the branch wiring harness is fixed inside the third mold cavity 13 by negative pressure adsorption inside the through hole 2, which can fix the branch wiring harness, and the plug 21 can block the through hole 2 to maintain the integrity of the inner wall of the third mold cavity 13.

[0035] In order to block the through hole 2, illustratively, as Figure 3 As shown, a sealing ring is fixed on the outer wall of the upper end of the limiting plate 22, and the sealing ring is in contact with the inner wall of the through hole 2.

[0036] When in use, the limiting plate 22 limits the moving distance of the plug 21 , and the sealing between the plug 21 and the through hole 2 is improved by the sealing ring and the limiting plate 22 , thereby ensuring the blocking and sealing of the through hole 2 .

[0037] To exhaust the air, for example, Figure 2 As shown, the connecting pipe 3 corresponds to the through hole 2 in position, and the inner diameter of the connecting pipe 3 is consistent with the inner diameter of the through hole 2.

[0038] When in use, the gas inside the through hole 2 can flow into the connecting tube 3, thereby extracting the gas inside the through hole 2, so that the inside of the through hole 2 can present a negative pressure state.

[0039] To fix the harness, for example, Figure 4 As shown, an exhaust pipe 31 is inserted and installed on the outer wall of one side of the connecting pipe 3, and the exhaust pipe 31 is connected with the inside of the through hole 2 through the connecting pipe 3.

[0040] When in use, the exhaust pipe 31 is connected to an external vacuum pump, which can extract and discharge the gas inside the through hole 2 through the exhaust pipe 31 and the connecting pipe 3, so that the inside of the through hole 2 is under negative pressure, thereby being able to adsorb and fix the branch wire harness inside the third mold cavity 13.

[0041] In order to control the movement of the plug 21, for example, Figure 4 As shown, a connecting rod 23 is installed on the outer wall of the lower end of the plug 21, and the outer wall of the lower end of the connecting rod 23 is connected to the outer wall of the upper end of the push rod body 32.

[0042] When in use, the push rod body 32 can drive the connecting rod 23 to move vertically, thereby adjusting the position of the plug 21 inside the through hole 2 so that the plug 21 can block the through hole 2 in a controlled manner.

[0043] When the utility model is in use, the staff places the wiring harness inside the first mold cavity 11, and the main wiring harness in the wiring harness is placed inside the second mold cavity 12, and the branch wiring harness in the wiring harness is placed inside the third mold cavity 13;

[0044] The electric push rod drives the connecting rod 23 and the plug 21 to move downward, so that the sealing ring is out of contact with the inner wall of the through hole 2, thereby connecting the through hole 2, the connecting pipe 3 and the exhaust pipe 31. The external vacuum pump evacuates the inside of the through hole 2 through the exhaust pipe 31 and the connecting pipe 3, so that the inside of the through hole 2 is in a negative pressure state, so that the branch wiring harness is adsorbed inside the third mold cavity 13, fixing the branch wiring harness and keeping the position of the branch wiring harness inside the third mold cavity 13 stable.

[0045] After the wiring harness is placed and the mold body 1 is closed, the electric push rod drives the plug 21 to reset through the connecting rod 23. The plug 21 blocks the through hole 2 to ensure that the inner wall of the third mold cavity 13 fits the plug 21, preventing the molten material for overmolding from flowing into the through hole 2, and the external vacuum pump stops working;

[0046] The molten material flows into the first mold cavity 11 , the second mold cavity 12 and the third mold cavity 13 respectively through the pouring port 14 , thereby achieving the overmolding process of the wiring harness therein.

[0047] It should be noted that the present invention is an automotive wiring harness plastic coating device. The components in the present invention are all components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0048] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A plastic coating device for automobile wiring harness, characterized in that: The mold body (1) comprises a mold body, a through hole (2) and a connecting pipe (3), wherein a first mold cavity (11) is provided on one side of the outer wall of the upper end of the mold body (1), a third mold cavity (13) is provided on the outer wall of the side of the mold body (1) away from the first mold cavity (11), and the third mold cavity (13) is equidistantly and parallelly distributed, a through hole (2) is provided on one side of the lower end of the inner wall of the third mold cavity (13), a plug (21) is provided inside the through hole (2), a limit plate (22) is installed on the lower end of the outer wall of the plug (21), a connecting pipe (3) is installed on the outer wall of the lower end of the mold body (1), a push rod body (32) is installed on one side of the lower end of the inner wall of the connecting pipe (3), and a pouring port (14) is provided on one side of the lower end of the inner wall of the first mold cavity (11).

2. The automotive wiring harness plastic coating device according to claim 1, characterized in that: Second mold cavities (12) are provided on both sides of the outer wall of the upper end of the mold body (1), the second mold cavity (12) is located between the third mold cavities (13), and the first mold cavity (11) is respectively connected to the second mold cavity (12) and the third mold cavity (13).

3. The automotive wiring harness plastic coating device according to claim 1, characterized in that: The inner wall of the through hole (2) is designed to be convex, and the shape of the upper end surface of the plug (21) is adapted to the shape of the inner wall of the third mold cavity (13).

4. The automotive wiring harness plastic coating device according to claim 1, characterized in that: A sealing ring is fixedly attached to the outer wall of the upper end of the limiting plate (22), and the sealing ring is in contact with the inner wall of the through hole (2).

5. The automotive wiring harness plastic coating device according to claim 1, characterized in that: The connecting tube (3) corresponds to the position of the through hole (2), and the inner diameter of the connecting tube (3) is consistent with the inner diameter of the through hole (2).

6. The automotive wiring harness plastic coating device according to claim 1, characterized in that: An exhaust pipe (31) is plugged and installed on the outer wall of one side of the connecting pipe (3), and the exhaust pipe (31) is connected to the interior of the through hole (2) through the connecting pipe (3).

7. The automotive wiring harness plastic coating device according to claim 1, characterized in that: A connecting rod (23) is installed on the outer wall of the lower end of the plug (21), and the outer wall of the lower end of the connecting rod (23) is connected to the outer wall of the upper end of the push rod body (32).

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