A glue potting device for wire harness processing

Abstract

The present invention relates to the technical field of glue potting equipment, and specifically discloses a glue potting equipment for wire harness processing, comprising a workbench, a conveying mechanism, a glue potting mechanism, and a driving mechanism. The glue potting mechanism comprises a glue storage cylinder, a glue potting needle connected to the glue storage cylinder, a pretreatment sleeve sleeved outside the glue potting needle, an outer cover sleeve sleeved outside the pretreatment sleeve, and an elastic element connected between the pretreatment sleeve and the outer cover sleeve; a sealing cover is formed at the lower end of the outer cover sleeve, and a lower vacuum head is provided on the sealing cover; a vacuum chamber, a diversion chamber, and a glue potting nozzle are formed in sequence from top to bottom in the pretreatment sleeve, the glue potting needle extends into the diversion chamber, an upper vacuum head is provided on the pretreatment sleeve, a connecting port is provided between the vacuum chamber and the diversion chamber, the outer cover sleeve has a sealing member for closing the connecting port, an opening and closing valve is installed at the glue potting nozzle, and a material pusher is assembled in the diversion chamber. The glue potting equipment for wire harness processing reduces the possibility of bubbles mixing into the wire harness from the source.

Description

Technical Field

[0001] The present invention relates to the technical field of glue potting equipment, and in particular to glue potting equipment for wire harness processing. Background Art

[0002] Wiring harnesses are widely used in automotive, industrial automation, communications, and other fields, providing fundamental support for the transmission of electrical signals and the distribution of power. With the continuous advancement of technology in these fields, wire harness processing techniques have also evolved, with the glue potting process becoming a crucial step in improving the protective performance of wire harnesses. As the core equipment for this process, the performance and functionality of wire harness potting equipment are crucial. It precisely dispenses glue into a potting mold (usually rectangular or shaped) at the designated location of the wire harness, forming a protective layer at key locations. This layer provides insulation, waterproofing, and securement, helping to extend the life of the wire harness and enhance its adaptability in complex environments. However, during the actual glue potting process, air can easily enter the glue, forming bubbles. These bubbles can reduce the tightness of the glue-to-wire bond, weakening the insulation and sealing effects, and can even become potential failure points, threatening the overall performance and safety of electronic equipment or vehicles. Therefore, effectively eliminating bubbles in the glue has become a key issue in improving the performance of wire harness potting equipment and the quality of the potting process.

[0003] The prior art wire harness processing glue pouring equipment, such as a vacuum glue pouring machine disclosed in the Chinese patent document with authorization announcement number CN113414069B, uses the fixed part and the movable part on the jacking assembly to compress and seal the product conveyed on the synchronous conveying assembly. After vacuuming by the vacuum head, the glue pouring assembly performs vacuum glue pouring through the glue pouring hole, truly realizing the formation of a small range of vacuum around the product, with short downtime and low cost for maintenance. The vacuuming and glue pouring processes can be carried out continuously on the assembly line, thereby improving processing efficiency.

[0004] However, during the glue filling process, the vacuum environment formed around the product by the above-mentioned vacuum glue filling machine in the prior art can only prevent the air outside the glue filling area from entering, reducing the generation of bubbles at the contact interface between the product and the glue. However, the glue may originally contain bubbles (such as bubbles mixed in during the storage, mixing, and transportation of the glue). These bubbles cannot be extracted before glue filling, which can easily lead to microbubbles in the glue layer after curing, affecting the sealing and insulation properties. Summary of the Invention

[0005] The present invention provides a glue potting device for wire harness processing, aiming to solve the problem of incomplete bubble removal in vacuum glue potting machines in the related art.

[0006] The present invention provides a glue potting device for wire harness processing that adopts the following technical solutions:

[0007] A glue dispensing device for wire harness processing, comprising a workbench, a conveying mechanism disposed on the workbench for placing and conveying the wire harness, a glue dispensing mechanism disposed on the workbench for performing glue dispensing operations on the wire harness, and a driving mechanism disposed on the workbench for adjusting the position of the glue dispensing mechanism, wherein the glue dispensing mechanism comprises a glue storage cylinder mounted on the driving mechanism, a glue dispensing needle disposed at the lower end of the glue storage cylinder, a pretreatment sleeve sleeved over the glue dispensing needle, an outer cover sleeve sleeved over the pretreatment sleeve, and an elastic element connected between the pretreatment sleeve and the outer cover sleeve;

[0008] The lower end of the outer cover tube forms a sealing cover for covering the glue-potting mold of the wiring harness, and a lower vacuum head for evacuating the inside of the sealing cover is provided on the sealing cover. The elastic element is used to apply elastic force to the outer cover tube so that the outer cover tube moves downward relative to the pretreatment sleeve and contacts the wiring harness first.

[0009] A vacuum chamber, a guide chamber, and a glue pouring nozzle are sequentially formed in the pretreatment sleeve from top to bottom. The lower end of the glue pouring needle extends into the guide chamber to introduce glue into the guide chamber. An upper vacuum head for evacuating the vacuum chamber is provided on the pretreatment sleeve. A connecting port is provided between the vacuum chamber and the guide chamber. The outer cover tube has a sealing member that extends into the pretreatment sleeve to close the connecting port. An opening and closing valve is elastically installed at the upper and lower parts of the glue pouring nozzle. A pushing member that moves up and down in the guide chamber is provided to push the glue downward to pass through the opening and closing valve for glue pouring.

[0010] By adopting the above technical solution, a pretreatment sleeve, an outer cover tube and an elastic element are provided outside the glue filling needle. The glue in the glue filling needle is introduced into the guide chamber, and the vacuum chamber is evacuated by the upper vacuum head, so that the guide chamber is connected with the vacuum chamber through the connecting port to form a negative pressure environment. Under the action of negative pressure, the air mixed into the glue during storage, mixing and transportation forms bubbles and is extracted, thereby realizing the bubble removal treatment of the glue. Therefore, before the glue enters the wiring harness, the bubbles inside the glue are effectively discharged, so that the quality of the glue poured into the wiring harness is higher, the situation of bubbles mixing into the wiring harness is reduced from the source, and the quality of the glue filling operation is improved. And through the relative movement between the outer cover tube and the pretreatment sleeve, the switch of the connecting port is controlled, so that the guide chamber is filled with glue and the connecting port is closed when the bubbles are discharged. After the connecting port is closed, the purity of the glue in the guide chamber can be further ensured, and the pushing part can more effectively push the glue to flow downward, maintain the stability of the glue pressure, ensure that the opening and closing valve opens smoothly, and the glue can flow out evenly and stably through the glue filling nozzle, so as to perform precise glue filling operations.

[0011] Furthermore, an inner warehouse body is fixedly installed in the diversion chamber, the opening of the inner warehouse body faces upward and forms an overflow port, and a diversion space connected to the glue filling nozzle is left between the outer wall of the inner warehouse body and the inner wall of the diversion chamber, and the lower end of the glue filling needle passes through the opening of the inner warehouse body and extends into the inner warehouse body to introduce glue into the inner warehouse body, so that excess glue in the inner warehouse body can flow into the diversion space through the overflow port.

[0012] By adopting the above technical solution, when the glue liquid level in the inner chamber rises to the overflow port, the excess glue can flow into the guide space through the overflow port and then flow downward to guide the glue to flow along an S-shaped path in the guide chamber, thereby ensuring uniform distribution and stable flow of the glue. At the same time, it prolongs the residence time of the glue in a vacuum environment, making it easier and more sufficient for bubbles to rise and be discharged during the flow process, thereby improving the defoaming efficiency, enhancing the purity of the glue, and providing high-quality glue for subsequent precise glue filling operations.

[0013] Furthermore, an overflow space is left between the opening of the inner warehouse body and the connecting port, and the pushing piece is annular and adapted to the cross-sectional shape of the guide space. The pushing piece can move downward from the overflow space into the guide space, thereby pushing the glue through the opening and closing valve.

[0014] Furthermore, the lower surface of the pushing member has a material guiding surface that slopes downward from the inside to the outside.

[0015] By adopting the above technical solution, the design of the material guide surface sloping downward from the inside to the outside provides a smooth escape path for bubbles, which is conducive to guiding the bubbles to rise and be discharged through the connecting port under the action of negative pressure, avoiding affecting the defoaming process.

[0016] Furthermore, the pretreatment sleeve is fixedly installed with a partition plate between the vacuum chamber and the guide chamber, the partition plate is provided with the communication port, the communication port is annular, and the outer cover tube is fixedly installed with a mounting rod that penetrates downward into the pretreatment sleeve and is fixedly connected to the seal.

[0017] Furthermore, the outer cover tube is provided with a pushing drive member for driving the pushing member to move up and down, and the pushing drive member includes a pushing motor installed on the outer cover tube, a threaded rod arranged at the output end of the pushing motor, and a lifting sleeve rod arranged on the pushing member and threadedly connected to the threaded rod.

[0018] By adopting the above technical solution, the push drive member drives the threaded rod to rotate through the push motor, so that the threaded rod drives the lifting sleeve rod through the spiral transmission to drive the push member to move up or down, thereby realizing precise up and down movement control of the push member, which is beneficial for the push member to flexibly adjust its height position in the guide chamber according to the actual storage amount of glue and glue filling requirements to adapt to different glue filling tasks, thereby improving the flexibility and adaptability of the equipment.

[0019] Furthermore, the threaded rod is rotatably installed in the mounting rod, the lifting sleeve rod is sleeved on the lower end of the threaded rod, and a receiving groove for receiving the lifting sleeve rod is opened at the lower position of the mounting rod.

[0020] Furthermore, a pressure sensor is installed on the lower surface of the sealing cover, and the pressure sensor is used to detect the covering condition of the sealing cover and the glue pouring mold, and is communicatively connected with the glue storage cylinder, the upper vacuum head and the lower vacuum head.

[0021] Furthermore, a tapered cavity with a larger upper portion and a smaller lower portion is provided between the flow guide cavity and the glue filling nozzle.

[0022] With the above technical solution, the shape of the conical chamber is used to guide the glue after defoaming to flow downward, ensuring that the glue can evenly enter the glue filling nozzle.

[0023] Furthermore, the upper end of the glue filling nozzle has an opening and closing channel extending up and down, the opening and closing valve is spherical, and the upper surface of the opening and closing valve is connected to the inner chamber body through a closing elastic part. The closing elastic part is used to apply elastic force to the opening and closing valve to move the opening and closing valve upward into the opening and closing channel to close the opening and closing channel.

[0024] The beneficial effects of the glue filling equipment for wire harness processing provided by the present invention are as follows: a pretreatment sleeve, an outer cover tube and an elastic element are arranged outside the glue filling needle, and the glue in the glue filling needle is introduced into the guide chamber, and the vacuum chamber is evacuated by the upper vacuum head, so that the guide chamber is connected with the vacuum chamber through the connecting port, thereby forming a negative pressure environment. Under the action of negative pressure, the air mixed into the glue during storage, mixing and transportation forms bubbles and is extracted, thereby realizing the bubble removal treatment of the glue, thereby effectively discharging the bubbles inside the glue before the glue enters the wire harness, making the quality of the glue filled into the wire harness higher, reducing the situation of bubbles mixing into the wire harness from the source, and improving the quality of the glue filling operation. And through the relative movement between the outer cover tube and the pretreatment sleeve, the switch of the connecting port is controlled, so that the guide chamber is filled with glue and the connecting port is closed when the bubbles are discharged. After the connecting port is closed, the purity of the glue in the guide chamber can be further ensured, and the pushing part can more effectively push the glue to flow downward, maintain the stability of the glue pressure, ensure that the opening and closing valve opens smoothly, and the glue can flow out evenly and stably through the glue filling nozzle, so as to perform precise glue filling operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the glue potting equipment for wire harness processing of the present invention.

[0026] Figure 2 It is a structural schematic diagram of the conveying mechanism and wire harness of the glue potting equipment for wire harness processing of the present invention.

[0027] Figure 3 The present invention is a schematic diagram of the external structure of the glue filling mechanism of the glue filling equipment for wire harness processing.

[0028] Figure 4 The present invention is a schematic diagram of the internal structure of the glue filling mechanism of the glue filling equipment for wire harness processing.

[0029] Figure 5 It is a schematic diagram of the internal structure of the glue filling mechanism of the glue filling equipment for wire harness processing of the present invention from another perspective.

[0030] Figure 6 It is a structural schematic diagram of a pretreatment sleeve of a glue potting device for wire harness processing of the present invention.

[0031] Figure 7 It is a structural schematic diagram of the outer cover tube of the glue potting equipment for wire harness processing of the present invention.

[0032] Figure 8 It is a structural schematic diagram of a material pushing member of the glue potting equipment for wire harness processing of the present invention.

[0033] Reference numerals:

[0034] 10. Workbench; 110. Conveying mechanism; 120. Glue dispensing mechanism; 130. Driving mechanism; 20. Wiring harness; 210. Glue dispensing mold; 30. Glue storage cylinder; 40. Mixer; 50. Glue dispensing needle; 60. Pretreatment sleeve; 610. Vacuum chamber; 620. Diversion chamber; 630. Conical chamber; 640. Glue dispensing nozzle; 641. Opening and closing channel; 650. Upper vacuum head; 660. Partition plate; 661. Connecting port; 670. Opening Closing valve; 671, closing elastic member; 680, inner chamber; 681, overflow port; 70, outer cover tube; 710, sealing cover; 711, pressure sensor; 720, lower vacuum head; 730, sealing member; 740, mounting rod; 741, receiving groove; 80, elastic element; 90, pushing member; 910, guiding surface; 920, pushing drive member; 921, pushing motor; 922, threaded rod; 923, lifting sleeve rod; 930, one-way valve. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0036] like Figures 1 to 8 As shown, an embodiment of the glue potting equipment for wire harness processing of the present invention is used to pour glue into a glue potting mold 210 of a wire harness 20 , and includes a workbench 10 , a conveying mechanism 110 , a glue potting mechanism 120 and a driving mechanism 130 .

[0037] Among them, the workbench 10 is the basic support part of the entire equipment, which is used to install and fix other components and provide a stable working plane for the placement and glue pouring operations of the wire harness 20; the conveying mechanism 110 is arranged on the workbench 10, for placing and conveying the wire harness 20, and the conveying mechanism 110 includes a placement tray for placing a number of wire harnesses 20 to be processed, and a conveying slide rail for conveying the placement tray from the starting end to the glue pouring position and outputting it to the next process; the glue pouring mechanism 120 is arranged on the workbench 10, for performing glue pouring operations one by one on the placement tray of the wire harnesses 20 to be processed transported to the glue pouring position; the driving mechanism 130 is arranged on the workbench 10, for adjusting the position of the glue pouring mechanism 120 according to the position of the wire harness 20, so that the glue pouring mechanism 120 moves along the XYZ three axes to ensure that the glue pouring needle 50 can be accurately aligned with the glue pouring mold 210 of the wire harness 20.

[0038] like Figure 1 、 Figure 3 and Figure 4 As shown, the glue dispensing mechanism 120 includes a glue storage cylinder 30, a mixer 40, a glue dispensing needle 50, a pretreatment sleeve 60, an outer cover cylinder 70, an elastic element 80, a pusher 90, and a pusher drive 920. The glue storage cylinder 30 is mounted on the drive mechanism 130 and is used to hold the glue used for dispensing. The glue storage cylinder 30 is pneumatically operated, with compressed air driving a piston to push the glue out. The mixer 40 is mounted on the glue storage cylinder 30 and connected to the glue supply system via a glue pipe. This allows the two-component glue from the glue supply system to be fully mixed and then delivered to the glue storage cylinder 30. The glue dispensing needle 50 is located at the lower end of the glue storage cylinder 30 and is used to transport the glue in the glue storage cylinder 30 downward. The pretreatment sleeve 60 is sleeved on the outside of the glue filling needle 50, the outer cover tube 70 is sleeved on the outside of the pretreatment sleeve 60, the elastic element 80 is connected between the pretreatment sleeve 60 and the outer cover tube 70, the pusher 90 is installed in the pretreatment sleeve 60, and the pusher drive member 920 is installed on the outer cover tube 70.

[0039] like Figure 4 、 Figure 5 and Figure 6 As shown, the pretreatment sleeve 60 is fixedly sleeved on the outside of the glue pouring needle 50, and the pretreatment sleeve 60 is sequentially formed with a vacuum chamber 610, a guide chamber 620, a tapered chamber 630 and a glue pouring nozzle 640 from top to bottom.

[0040] The vacuum chamber 610 and the guide chamber 620 are both cylindrical in shape as a whole, and a partition plate 660 is provided between the vacuum chamber 610 and the guide chamber 620. The partition plate 660 is fixedly mounted on the inner wall of the pretreatment sleeve 60, and is used to separate the vacuum chamber 610 and the guide chamber 620. A connecting port 661 is provided on the partition plate 660, and the connecting port 661 is annular. The vacuum chamber 610 is used to form a sealed vacuum environment, and the guide chamber 620 is used to receive and temporarily store glue from the glue injection needle 50. When the connecting port 661 is opened, the guide chamber 620 can be connected to the vacuum chamber 610 through the connecting port 661, so that a negative pressure environment is formed in the guide chamber 620. Under the action of the negative pressure, the air mixed in the glue forms bubbles and is extracted, thereby achieving the bubble removal treatment of the glue and improving the quality of the glue.

[0041] An inner chamber 680 is fixedly mounted within the diversion chamber 620. The opening of the inner chamber 680 faces upward and forms an overflow port 681. A diversion space connecting to the tapered chamber 630 is left between the outer wall of the inner chamber 680 and the inner wall of the diversion chamber 620. An overflow space is also left between the opening of the inner chamber 680 and the communication port 661. The lower end of the glue injection needle 50 extends through the opening of the inner chamber 680 into the inner chamber 680 to introduce glue into the inner chamber 680. When the glue liquid level in the inner chamber 680 rises to the overflow port 681, the excess glue can flow into the guide space through the overflow port 681 through the overflow space, and then flow downward to guide the glue to flow along an S-shaped path in the guide chamber 620, ensuring the uniform distribution and stable flow of the glue while extending the residence time of the glue in a vacuum environment, making it easier and more sufficient for bubbles to rise and be discharged during the flow process, thereby improving the defoaming efficiency, and improving the purity of the glue, providing high-quality glue for subsequent precise glue filling operations.

[0042] The conical chamber 630 is generally in a conical shape with a larger top and a smaller bottom, and is used to guide the glue after defoaming to flow downward, ensuring that the glue can evenly enter the glue filling nozzle 640.

[0043] The glue pouring nozzle 640 is generally cylindrical in shape. It directly contacts the wiring harness 20 for glue pouring. Its diameter can be selected based on the size of the wiring harness 20 and the glue pouring requirements to ensure that the glue can be accurately injected into the glue pouring mold 210 of the wiring harness 20. The upper end of the glue pouring nozzle 640 has an opening and closing channel 641 extending vertically. An opening and closing valve 670 is installed in the opening and closing channel 641 to control the opening and closing of the opening and closing channel 641. The opening and closing valve 670 is spherical, which facilitates its close contact with the inner wall of the opening and closing channel 641, ensuring a good seal. The upper surface of the opening and closing valve 670 is connected to the inner chamber 680 via a closing elastic member 671. The closing elastic member 671 is a spring that applies an elastic force to the opening and closing valve 670, causing it to move upward into the opening and closing channel 641, thereby sealing the opening and closing channel 641. In other embodiments, the closing elastic member 671 may also be a spring or other elastic member, but is not limited thereto.

[0044] like Figure 3 、 Figure 4 、 Figure 5 and Figure 7 As shown, the outer cover tube 70 moves up and down and is sleeved on the outside of the pretreatment sleeve 60. The lower end of the outer cover tube 70 forms a sealing cover 710, which is used to cover the glue pouring mold 210 of the wiring harness 20 to form a sealed environment in the glue pouring area, effectively preventing external air from entering the glue pouring area during the glue pouring process, and avoiding air from mixing into the glue, thereby ensuring the purity of the glue and the quality of the glue pouring. In this embodiment, the glue pouring mold 210 of the wiring harness 20 is rectangular, and accordingly, the sealing cover 710 adopts a rectangular parallelepiped shape that is compatible with the glue pouring mold 210. A pressure sensor 711 is installed on the lower surface of the sealing cover 710. The pressure sensor 711 is used to monitor the pressure between the sealing cover 710 and the glue pouring mold 210 in real time, so as to accurately judge the covering condition of the two, ensure close contact between the sealing cover 710 and the glue pouring mold 210, and prevent the problem of loose sealing due to insufficient pressure. Pressure sensor 711 is in communication with glue storage cylinder 30, upper vacuum head 650, and lower vacuum head 720 to control the start and stop of glue introduction and defoaming operations based on the sealing cover 710 and the glue potting mold 210. Lower vacuum head 720 is provided on sealing cover 710 for vacuuming the interior of sealing cover 710. This further reduces the air pressure in the glue potting area, ensuring that the glue can better fill all parts of the wiring harness 20 during the glue potting process and also helps to remove any bubbles that may remain in the glue.

[0045] Four mounting rods 740 are fixedly mounted on the outer cover tube 70. The four mounting rods 740 are all inserted downward into the pretreatment sleeve 60 and are fixedly mounted with a seal 730 at the bottom. The shape of the seal 730 is adapted to the communication port 661. The seal 730 is located in the overflow space and is used to close the communication port 661 when the diversion chamber 620 is filled with glue and the bubbles are discharged. After the communication port 661 is closed, the purity of the glue in the diversion chamber 620 can be further ensured, and the pusher 90 can more effectively push the glue downward, maintain the stability of the glue pressure, ensure that the opening and closing valve 670 can be opened smoothly, and the glue can flow out evenly and stably through the glue injection nozzle 640, so as to perform a precise glue injection operation. In addition, it can also prevent the glue from flowing back into the vacuum chamber 610 during the glue injection process, ensuring that the glue can only flow in one direction, that is, from the diversion chamber 620 to the glue injection nozzle 640, avoiding unnecessary glue flow.

[0046] An upper vacuum head 650 is mounted on one of the mounting rods 740, and a suction port is provided on the portion of the mounting rod 740 that extends into the vacuum chamber 610. The upper vacuum head 650 is used to evacuate the vacuum chamber 610, thereby creating a negative pressure environment within the vacuum chamber 610 and the diversion chamber 620.

[0047] The elastic element 80 is a spring, which is used to apply elastic force to the outer cover tube 70 so that the outer cover tube 70 moves downward relative to the pretreatment sleeve 60 and first contacts the glue pouring mold 210 of the wiring harness 20, thereby forming a sealed environment and providing stable external conditions for the glue pouring in the pretreatment sleeve 60.

[0048] like Figure 4 、 Figure 5 、 Figure 7 and Figure 8As shown, the pusher 90 moves up and down and is assembled in the guide chamber 620, and is used to push the glue downward through the opening and closing valve 670 for glue filling. The pusher 90 is annular and adapted to the cross-sectional shape of the guide space. The lower surface of the pusher 90 has a guide surface 910 that is inclined downward from the inside to the outside. A one-way valve 930 is installed on the pusher 90. The one-way valve 930 is used to allow the glue above to flow downward through the one-way valve 930 when the pusher 90 is moved up and reset, thereby reducing the reset resistance of the pusher 90 and allowing the pusher 90 to return to its initial position more smoothly. During defoaming, the pusher 90 is located in the overflow space, and the design of the guide surface 910 that is inclined downward from the inside to the outside provides a smooth escape path for the bubbles, which is conducive to guiding the bubbles to rise under the action of negative pressure and be discharged through the connecting port 661, thereby avoiding affecting the defoaming process. After defoaming, the pushing piece 90 can move down from the overflow space into the guide space, thereby fitting tightly against the inner wall of the guide space, pushing the defoamed glue in the guide space downward, increasing the pressure of the glue and being sufficient to overcome the elastic force of the closing elastic piece 671. The opening and closing valve 670 is pushed downward, the opening and closing channel 641 is opened, and the defoamed glue flows out through the glue filling nozzle 640 and is poured into the glue filling mold 210 of the wiring harness 20.

[0049] The push drive member 920 is used to drive the push member 90 to move up and down. The push drive member 920 includes a push motor 921 installed on the outer cover tube 70, a threaded rod 922 provided at the output end of the push motor 921, and a lifting sleeve rod 923 provided on the push member 90 and threadedly connected to the threaded rod 922. The push drive member 920 in the embodiment is provided in two groups, and is respectively installed at the two mounting rods 740 where the upper vacuum head 650 is not provided. The threaded rod 922 is rotatably installed in the mounting rod 740, and the lifting sleeve rod 923 is sleeved on the lower end of the threaded rod 922. The lower position of the mounting rod 740 is provided with a receiving groove 741 for accommodating the lifting sleeve rod 923 to allow the lifting sleeve rod 923 to be raised and lowered. The pushing drive member 920 drives the threaded rod 922 to rotate through the pushing motor 921, so that the threaded rod 922 drives the lifting sleeve rod 923 through the spiral transmission to drive the pushing member 90 to move upward or downward, thereby realizing precise up and down movement control of the pushing member 90, which is beneficial for the pushing member 90 to flexibly adjust its height position in the guide chamber 620 according to the actual storage amount of glue and glue filling requirements to adapt to different glue filling tasks, thereby improving the flexibility and adaptability of the equipment.

[0050] The working process of the embodiment of the wire harness processing glue potting equipment of the present invention includes the following steps:

[0051] The first step is placement and transportation. The operator places the wire harness 20 to be processed on the placement tray of the conveying mechanism 110, and the conveying slide rail of the conveying mechanism 110 transports the placement tray from the starting end to the glue filling position.

[0052] The second step is positioning and sealing. The driving mechanism 130 adjusts the position of the glue filling mechanism 120 according to the position of the wiring harness 20, so that the glue filling mechanism 120 moves along the XYZ three-axis to ensure that the glue filling needle 50 is accurately aligned with the glue filling mold 210 of the wiring harness 20 and moves downward. The sealing cover 710 first contacts the glue filling mold 210 of the wiring harness 20 and forms a sealed environment. The pressure sensor 711 monitors the pressure between the sealing cover 710 and the glue filling mold 210 in real time, so as to accurately determine the covering condition of the two. At this time, the outer cover tube 70 moves downward relative to the pretreatment sleeve 60 under the drive of the elastic element 80, the sealing member 730 is located in the overflow space, the connecting port 661 is in an open state, and the pushing drive member 920 drives the pushing member 90 to move upward into the overflow space.

[0053] The third step is to introduce and defoam. When the sealing cover 710 is covered with the glue filling mold 210, the pressure sensor 711 simultaneously transmits signals to the lower vacuum head 720, the upper vacuum head 650 and the glue storage cylinder 30. The lower vacuum head 720 vacuums the sealing cover 710 to further reduce the air pressure in the glue filling area and prevent external air from entering; the upper vacuum head 650 vacuums the vacuum chamber 610 to form a negative pressure environment in the guide chamber 620 through the connecting port 661; the glue storage cylinder 30 drives the piston through compressed air to discharge the glue and introduce it into the inner warehouse body 680 through the glue filling needle 50. The glue in the inner warehouse body 680 flows into the guide space through the overflow port 681 and flows along the S-shaped path to remove bubbles. During this period, the driving mechanism 130 continues to drive the glue filling needle 50 downward, the elastic element 80 is compressed, and the pretreatment sleeve 60 moves downward relative to the outer cover tube 70 until the guide chamber 620 is filled with glue and the bubbles are discharged. The pretreatment sleeve 60 moves downward relative to the outer cover tube 70 until the connecting port 661 is closed by the sealing member 730.

[0054] The fourth step is the glue pouring operation. The pushing motor 921 drives the threaded rod 922 to rotate, and the pushing piece 90 is driven downward by the spiral transmission. The pushing piece 90 moves downward from the overflow space into the guide space, pushing the defoamed glue to flow downward. The glue pressure increases, overcoming the elastic force of the closing elastic piece 671, and the opening and closing valve 670 is pushed downward. The opening and closing channel 641 is opened, and the defoamed glue flows out through the glue pouring nozzle 640 and is poured into the glue pouring mold 210 of the wiring harness 20.

[0055] The fifth step is to complete the glue filling and reset. After the glue filling is completed, the pushing motor 921 drives the pushing member 90 to move up and reset. The opening and closing valve 670 closes the opening and closing channel 641 under the action of the closing elastic member 671. The driving mechanism 130 drives the glue filling mechanism 120 to move up and away from the wiring harness 20. The sealing cover 710 is separated from the glue filling mold 210. The conveying mechanism 110 conveys the wire harness 20 that has completed the glue filling to the next process.

[0056] In this way, an embodiment of the glue potting equipment for wire harness processing of the present invention is provided with a pretreatment sleeve 60, an outer cover tube 70 and an elastic element 80 outside the glue potting needle 50. The glue in the glue potting needle 50 is introduced into the guide chamber 620, and the vacuum chamber 610 is evacuated by the upper vacuum head 650, so that the guide chamber 620 is connected with the vacuum chamber 610 through the connecting port 661, thereby forming a negative pressure environment. Under the action of negative pressure, the air mixed into the glue during storage, mixing and transportation forms bubbles and is extracted, thereby realizing the bubble removal treatment of the glue, thereby effectively discharging the bubbles inside the glue before the glue enters the wire harness 20, so that the quality of the glue poured into the wire harness 20 is higher, and the situation of bubbles mixing into the wire harness 20 is reduced from the source, thereby improving the quality of the glue potting operation. And through the relative movement between the outer cover tube 70 and the pretreatment sleeve 60, the switch of the connecting port 661 is controlled, so that the guide chamber 620 is filled with glue and the connecting port 661 is closed when the bubbles are discharged. After closing the connecting port 661, the purity of the glue in the guide chamber 620 can be further ensured, and the pushing piece 90 can more effectively push the glue to flow downward, maintain the stability of the glue pressure, ensure that the opening and closing valve 670 opens smoothly, and the glue can flow out evenly and stably through the glue filling nozzle 640 to perform precise glue filling operations.

[0057] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0058] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two or three, unless otherwise specifically defined.

[0059] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A glue potting device for wire harness processing, comprising a workbench, a conveying mechanism disposed on the workbench for placing and conveying the wire harness, a glue potting mechanism disposed on the workbench for performing glue potting operations on the wire harness, and a driving mechanism disposed on the workbench for adjusting the position of the glue potting mechanism, characterized in that: The glue filling mechanism includes a glue storage cylinder installed on the driving mechanism, a glue filling needle arranged at the lower end of the glue storage cylinder, a pretreatment sleeve sleeved outside the glue filling needle, an outer cover sleeve sleeved outside the pretreatment sleeve, and an elastic element connected between the pretreatment sleeve and the outer cover sleeve; The lower end of the outer cover tube forms a sealing cover for covering the glue-potting mold of the wiring harness, and a lower vacuum head for evacuating the inside of the sealing cover is provided on the sealing cover. The elastic element is used to apply elastic force to the outer cover tube so that the outer cover tube moves downward relative to the pretreatment sleeve and contacts the wiring harness first. A vacuum chamber, a guide chamber, and a glue pouring nozzle are sequentially formed in the pretreatment sleeve from top to bottom. The lower end of the glue pouring needle extends into the guide chamber to introduce glue into the guide chamber. An upper vacuum head for evacuating the vacuum chamber is provided on the pretreatment sleeve. A connecting port is provided between the vacuum chamber and the guide chamber. The outer cover tube has a sealing member that extends into the pretreatment sleeve to close the connecting port. An opening and closing valve is elastically installed at the upper and lower parts of the glue pouring nozzle. A pushing member that moves up and down in the guide chamber is provided to push the glue downward to pass through the opening and closing valve for glue pouring.

2. The glue potting equipment for wire harness processing according to claim 1, characterized in that: An inner bin body is fixedly installed in the diversion chamber, the opening of the inner bin body faces upward and forms an overflow port, and a diversion space connected to the glue filling nozzle is left between the outer wall of the inner bin body and the inner wall of the diversion chamber, and the lower end of the glue filling needle extends into the inner bin body through the opening of the inner bin body to introduce glue into the inner bin body, so that excess glue in the inner bin body can flow into the diversion space through the overflow port.

3. The glue potting equipment for wire harness processing according to claim 2, characterized in that: An overflow space is left between the opening of the inner bin body and the communicating port. The pushing piece is annular and adapted to the cross-sectional shape of the guide space. The pushing piece can move downward from the overflow space into the guide space, thereby pushing the glue through the opening and closing valve.

4. The glue potting equipment for wire harness processing according to claim 3, characterized in that: The lower surface of the pushing member has a material guiding surface that slopes downward from the inside to the outside.

5. The glue potting equipment for wire harness processing according to claim 1, characterized in that: The pretreatment sleeve is fixedly provided with a partition plate between the vacuum chamber and the guide chamber. The partition plate is provided with the communication port, which is annular. The outer cover tube is fixedly provided with a mounting rod which penetrates downward into the pretreatment sleeve and is fixedly connected to the sealing member.

6. The glue potting equipment for wire harness processing according to claim 5, characterized in that: The outer cover tube is provided with a pushing drive member for driving the pushing member to move up and down. The pushing drive member includes a pushing motor installed on the outer cover tube, a threaded rod arranged at the output end of the pushing motor, and a lifting sleeve rod arranged on the pushing member and threadedly connected to the threaded rod.

7. The glue potting equipment for wire harness processing according to claim 6, characterized in that: The threaded rod is rotatably installed in the installation rod, the lifting sleeve rod is sleeved on the lower end of the threaded rod, and a receiving groove for receiving the lifting sleeve rod is opened at the lower position of the installation rod.

8. The glue potting equipment for wire harness processing according to claim 1, characterized in that: A pressure sensor is installed on the lower surface of the sealing cover. The pressure sensor is used to detect the covering condition of the sealing cover and the glue pouring mold, and is communicatively connected with the glue storage cylinder, the upper vacuum head and the lower vacuum head.

9. The glue potting equipment for wire harness processing according to claim 1, characterized in that: A tapered cavity with a larger top and a smaller bottom is provided between the flow guide cavity and the glue pouring nozzle.

10. The glue potting equipment for wire harness processing according to claim 2, characterized in that: The upper end of the glue filling nozzle has an opening and closing channel extending up and down. The opening and closing valve is spherical. The upper surface of the opening and closing valve is connected to the inner warehouse body through a closing elastic member. The closing elastic member is used to apply elastic force to the opening and closing valve to move the opening and closing valve upward into the opening and closing channel to close the opening and closing channel.

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