Glue pouring equipment for wire harness processing

Abstract

The invention relates to the technical field of glue filling equipment, and particularly discloses glue filling equipment for wire harness processing, which comprises a workbench, a conveying mechanism, a glue filling mechanism and a driving mechanism, the glue filling mechanism comprises a glue storage barrel, a glue filling needle head connected with the glue storage barrel, a pretreatment sleeve sleeved outside the glue filling needle head, an outer cover barrel sleeved outside the pretreatment sleeve, and an elastic element connected between the pretreatment sleeve and the outer cover barrel; a sealing cover is formed at the lower end of the outer cover cylinder, and a lower vacuumizing head is arranged on the sealing cover; a vacuum chamber, a flow guide chamber and a glue filling nozzle are sequentially formed in the pretreatment sleeve from top to bottom, the glue filling needle extends into the flow guide chamber, an upper vacuumizing head is arranged on the pretreatment sleeve, a communication port is formed between the vacuum chamber and the flow guide chamber, the outer cover cylinder is provided with a sealing piece used for sealing the communication port, and an opening and closing valve is installed at the glue filling nozzle. And a material pushing piece is assembled in the flow guide cavity. The glue pouring equipment for wire harness processing reduces the situation that bubbles are mixed into the wire harness from the source.

Description

Technical Field

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

[0002] Wire harnesses are widely used in fields such as automobiles, industrial automation, and communications, providing a basic guarantee for the transmission of electrical signals and the distribution of electric power. With the continuous progress of technologies in these fields, the processing technology of wire harnesses has also evolved continuously. Among them, the potting process has become an important link in improving the protection performance of wire harnesses. As the core equipment for implementing the potting operation, the performance and functions of the potting equipment for wire harness processing are crucial. It can accurately pour glue into a potting mold (usually rectangular or special-shaped) at a specified part of the wire harness, forming a protective layer at the key parts of the wire harness, playing multiple roles such as insulation, sealing and waterproofing, and fixing the wire harness, which helps to extend the service life of the wire harness and enhance its adaptability in complex environments. However, in the actual potting process, air is easily mixed into the glue to form bubbles. The existence of bubbles will reduce the tightness of the glue's adhesion to the wire harness, weaken the insulation and sealing effects, and may even become potential fault points, threatening the overall performance and safety of electronic devices or automobiles, etc. Therefore, how to effectively eliminate the bubbles in the glue has become one of the key problems in improving the performance of the potting equipment for wire harness processing and the quality of the potting operation.

[0003] Among the existing potting equipment for wire harness processing, for example, a vacuum potting machine disclosed in a Chinese patent document with the authorization announcement number CN113414069B uses a fixed part and a movable part on a jacking assembly to tightly seal the products conveyed on a synchronous conveying assembly. After being evacuated by a vacuum head, the potting assembly performs vacuum potting through a potting hole, truly realizing a small-range vacuum around the products, with short downtime for maintenance and low cost. The processes of vacuum evacuation and potting can be continuously carried out on the production line, improving the processing efficiency.

[0004] However, during the potting process of the above-mentioned vacuum potting machine in the prior art, the vacuum environment formed around the products can only prevent the air outside the potting area from entering, reducing the generation of bubbles at the interface between the products and the glue. However, the glue itself may originally contain bubbles (such as bubbles mixed in during the storage, mixing, and conveying of the glue), and these bubbles cannot be evacuated before potting, easily resulting in micro-bubbles in the cured glue layer, affecting the sealing and insulation performance. Summary of the Invention

[0005] The present invention provides a potting equipment for wire harness processing, aiming to solve the problem that the bubble removal of the vacuum potting machine in the related technology is not thorough enough.

[0006] The potting equipment for wire harness processing provided by the present invention adopts the following technical solutions: A glue filling device for wire harness processing, comprising a workbench, a conveying mechanism arranged on the workbench for placing and conveying wire harnesses, a glue filling mechanism arranged on the workbench for performing glue filling operations on wire harnesses, and a driving mechanism arranged on the workbench for adjusting the position of the glue filling mechanism. The glue filling mechanism includes a glue storage cylinder installed on the driving mechanism, a glue filling needle head arranged at the lower end of the glue storage cylinder, a pretreatment sleeve sleeved outside the glue filling needle head, 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 sleeve forms a sealing cover for covering the glue filling mold of the wire harness, and a lower vacuum pumping head for evacuating the inside of the sealing cover is arranged on the sealing cover. The elastic element is used to apply an elastic force to the outer cover sleeve so that the outer cover sleeve moves downward relative to the pretreatment sleeve to come into contact with the wire harness first; A vacuum chamber, a diversion chamber, and a glue filling nozzle are sequentially formed in the pretreatment sleeve from top to bottom. The lower end of the glue filling needle head extends into the diversion chamber to introduce glue into the diversion chamber. An upper vacuum pumping head for evacuating the vacuum chamber is arranged on the pretreatment sleeve. A communication port is provided between the vacuum chamber and the diversion chamber. The outer cover sleeve has a sealing member extending into the pretreatment sleeve for closing the communication port. An opening and closing valve is elastically installed up and down at the glue filling nozzle. A pushing member for pushing the glue downward through the opening and closing valve for glue filling is movably assembled up and down in the diversion chamber.

[0007] With the above technical solution, a pretreatment sleeve, an outer cover sleeve, and an elastic element are arranged outside the glue filling needle head. By introducing the glue in the glue filling needle head into the diversion chamber and evacuating the vacuum chamber through the upper vacuum pumping head, the diversion chamber is communicated with the vacuum chamber through the communication port to form a negative pressure environment. Under the action of the negative pressure, the air mixed in the glue during storage, mixing, and conveying forms bubbles and is pumped out, realizing the degassing treatment of the glue. Thus, before the glue enters the wire harness, the bubbles inside the glue are effectively discharged, making the quality of the glue poured 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 sleeve and the pretreatment sleeve, the opening and closing of the communication port are controlled, so that when the diversion chamber is filled with glue and the degassing is completed, the communication port is closed. After closing the communication port, the purity of the glue in the diversion chamber can be further ensured, and the pushing member can more effectively push the glue to flow downward, maintaining the stability of the glue pressure, ensuring the smooth opening of the opening and closing valve, and enabling the glue to flow out evenly and stably through the glue filling nozzle for precise glue filling operations.

[0008] Further, an inner chamber body is fixedly installed in the diversion chamber. The opening of the inner chamber body faces upward to form an overflow port. A diversion space communicating with the glue injection nozzle is left between the outer side wall of the inner chamber body and the inner side wall of the diversion chamber. The lower end of the glue injection needle passes through the opening of the inner chamber body and extends into the inner chamber body to introduce glue into the inner chamber body, so that the excess glue in the inner chamber body can flow into the diversion space through the overflow port.

[0009] With the above technical solution, when the glue level in the inner chamber body rises to the overflow port, the excess glue can flow into the diversion space through the overflow port, and then flow downward to guide the glue to flow along an S-shaped path in the diversion chamber. While ensuring the uniform distribution and stable flow of the glue, the residence time of the glue in the vacuum environment is prolonged, making it easier and more sufficient for bubbles to rise and be discharged during the flow process, improving the defoaming efficiency and enhancing the purity of the glue, providing high-quality glue for subsequent precise glue injection operations.

[0010] Further, an overflow space is left between the opening of the inner chamber body and the communication port. The pusher is annular and adapted to the cross-sectional shape of the diversion space. The pusher can move downward from the overflow space into the diversion space to push the glue through the opening and closing valve.

[0011] Further, the lower surface of the pusher has a material guiding surface that slopes downward from the inside to the outside.

[0012] With the above technical solution, the design of the material guiding 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 communication port under the action of negative pressure, avoiding affecting the defoaming process.

[0013] Further, a partition plate is fixedly installed between the vacuum chamber and the diversion chamber on the pretreatment sleeve. The communication port is opened on the partition plate. The communication port is annular. An installation rod is fixedly installed on the outer cover cylinder and penetrates downward into the pretreatment sleeve and is fixedly connected with the seal.

[0014] Further, a pusher driving member for driving the pusher to move up and down is arranged on the outer cover cylinder. The pusher driving member includes a pusher motor installed on the outer cover cylinder, a threaded rod arranged at the output end of the pusher motor, and a lifting sleeve rod arranged on the pusher and threadedly connected with the threaded rod.

[0015] With the above technical solution, the pusher driving member drives the threaded rod to rotate through the pusher motor, so that the threaded rod drives the lifting sleeve rod to drive the pusher to move up or down through screw transmission, realizing precise up and down movement control of the pusher. It is beneficial to enable the pusher to flexibly adjust its height position in the diversion chamber according to the actual storage amount of the glue and the glue injection requirements, so as to adapt to different glue injection tasks, improving the flexibility and adaptability of the equipment.

[0016] Further, 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 formed at the lower part of the mounting rod.

[0017] Further, a pressure sensor is installed on the lower surface of the sealing cover. The pressure sensor is used to detect the closing situation of the sealing cover and the glue filling mold, and is communicatively connected with the glue storage cylinder, the upper vacuum extraction head and the lower vacuum extraction head.

[0018] Further, a tapered chamber with a larger upper part and a smaller lower part is provided between the diversion chamber and the glue filling nozzle.

[0019] Adopting the above technical solution, the shape of the tapered chamber is used to guide the defoamed glue to flow downward, ensuring that the glue can uniformly enter the glue filling nozzle.

[0020] Further, 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 cavity body through a closing elastic member. The closing elastic member is used to apply an elastic force to the opening and closing valve, so that the opening and closing valve moves upward into the opening and closing channel to close the opening and closing channel.

[0021] The beneficial effects of a glue filling device for wire harness processing provided by the present invention are as follows: A pretreatment sleeve, an outer cover cylinder and an elastic element are arranged outside the glue filling needle. By introducing the glue in the glue filling needle into the diversion chamber and evacuating the vacuum chamber through the upper vacuum extraction head, the diversion chamber is communicated with the vacuum chamber through the communication port to form a negative pressure environment. Under the action of the negative pressure, the air mixed in the glue during storage, mixing and transportation forms bubbles and is pumped out, realizing the degassing treatment of the glue. Thus, before the glue enters the wire harness, the bubbles inside the glue are effectively discharged, making the quality of the glue poured 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 cylinder and the pretreatment sleeve, the opening and closing of the communication port are controlled, so that when the diversion chamber is filled with glue and the degassing is completed, the communication port is closed. After closing the communication port, the purity of the glue in the diversion chamber can be further ensured, and the pushing member can more effectively push the glue to flow downward, maintaining the stability of the glue pressure, ensuring the smooth opening of the opening and closing valve, and enabling the glue to flow out evenly and stably through the glue filling nozzle for precise glue filling operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of the glue filling device for wire harness processing of the present invention.

[0023] Figure 2 is a schematic structural diagram of the conveying mechanism and the wire harness of the glue filling device for wire harness processing of the present invention.

[0024] Figure 3 It is a schematic diagram of the external structure of the glue filling mechanism of the glue filling equipment for wire harness processing according to the present invention.

[0025] Figure 4 It is a schematic diagram of the internal structure of the glue filling mechanism of the glue filling equipment for wire harness processing according to the present invention.

[0026] 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 according to the present invention from another perspective.

[0027] Figure 6 It is a schematic diagram of the structure of the pretreatment sleeve of the glue filling equipment for wire harness processing according to the present invention.

[0028] Figure 7 It is a schematic diagram of the structure of the outer cover cylinder of the glue filling equipment for wire harness processing according to the present invention.

[0029] Figure 8 It is a schematic diagram of the structure of the pusher of the glue filling equipment for wire harness processing according to the present invention.

[0030] Reference numerals: 10, workbench; 110, conveying mechanism; 120, glue filling mechanism; 130, driving mechanism; 20, wire harness; 210, glue filling mold; 30, glue storage cylinder; 40, mixer; 50, glue filling needle; 60, pretreatment sleeve; 610, vacuum chamber; 620, diversion chamber; 630, conical chamber; 640, glue filling nozzle; 641, opening and closing channel; 650, upper vacuum extraction head; 660, partition plate; 661, communication port; 670, opening and closing valve; 671, closing elastic member; 680, inner cavity body; 681, overflow port; 70, outer cover cylinder; 710, sealing cover; 711, pressure sensor; 720, lower vacuum extraction head; 730, sealing member; 740, mounting rod; 741, receiving groove; 80, elastic element; 90, pusher; 910, material guiding surface; 920, pusher driving member; 921, pusher motor; 922, threaded rod; 923, lifting sleeve rod; 930, check valve. Detailed description of the specific implementation mode

[0031] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and should not be construed as a limitation of the present invention.

[0032] As Figures 1 to 8 shown, an embodiment of the glue filling equipment for wire harness processing according to the present invention is used to pour glue into the glue filling mold 210 of the wire harness 20, and includes a workbench 10, a conveying mechanism 110, a glue filling mechanism 120 and a driving mechanism 130.

[0033] Among them, the workbench 10 is the basic support part of the entire device, used for installing and fixing other components, and providing a stable working plane for the placement and potting operation of the wire harness 20; the conveying mechanism 110 is arranged on the workbench 10, used for placing and conveying the wire harness 20. 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 potting position and outputting it to the next process; the potting mechanism 120 is arranged on the workbench 10, used for potting the wire harnesses 20 to be processed in the placement tray conveyed to the potting position one by one; the driving mechanism 130 is arranged on the workbench 10, used for adjusting the position of the potting mechanism 120 according to the position of the wire harness 20, so that the potting mechanism 120 moves along the XYZ three axes to ensure that the potting needle 50 can accurately align with the potting mold 210 of the wire harness 20.

[0034] As Figure 1 , Figure 3 and Figure 4 shown, the potting mechanism 120 includes a glue storage cylinder 30, a mixer 40, a potting needle 50, a pretreatment sleeve 60, an outer cover cylinder 70, an elastic element 80, a pusher 90 and a pusher driving part 920. The glue storage cylinder 30 is installed on the driving mechanism 130 and is used for accommodating the glue for potting. The glue storage cylinder 30 is pneumatic, and the piston is driven by compressed air to push the glue out. The mixer 40 is arranged on the glue storage cylinder 30. The mixer 40 is connected to the glue supply system through a glue conveying pipe to fully mix the two-component glue from the glue supply system and then input it into the glue storage cylinder 30. The potting needle 50 is arranged at the lower end of the glue storage cylinder 30 and is used for conveying the glue in the glue storage cylinder 30 downward. The pretreatment sleeve 60 is sleeved outside the potting needle 50, the outer cover cylinder 70 is sleeved outside the pretreatment sleeve 60, the elastic element 80 is connected between the pretreatment sleeve 60 and the outer cover cylinder 70, the pusher 90 is installed in the pretreatment sleeve 60, and the pusher driving part 920 is installed on the outer cover cylinder 70.

[0035] As Figure 4 , Figure 5 and Figure 6 shown, the pretreatment sleeve 60 is fixedly sleeved outside the potting needle 50. A vacuum chamber 610, a diversion chamber 620, a conical chamber 630 and a potting nozzle 640 are sequentially formed in the pretreatment sleeve 60 from top to bottom.

[0036] Both the vacuum chamber 610 and the diversion chamber 620 are cylindrical as a whole. A partition plate 660 is provided between the vacuum chamber 610 and the diversion chamber 620. The partition plate 660 is fixedly installed on the inner side wall of the pretreatment sleeve 60 and is used to separate the vacuum chamber 610 and the diversion chamber 620. A communication port 661 is formed on the partition plate 660, and the communication port 661 is annular. The vacuum chamber 610 is used to form a sealed vacuum environment, and the diversion chamber 620 is used to receive and temporarily store the glue from the glue injection needle 50. When the communication port 661 is opened, the diversion chamber 620 can communicate with the vacuum chamber 610 through the communication port 661, so as to form a negative pressure environment in the diversion chamber 620. Under the action of the negative pressure, the air mixed in the glue forms bubbles and is pumped out, thereby realizing the degassing treatment of the glue and improving the quality of the glue.

[0037] An inner bin body 680 is fixedly installed in the diversion chamber 620. The opening of the inner bin body 680 faces upward and forms an overflow port 681. A diversion space communicating with the conical chamber 630 is left between the outer side wall of the inner bin body 680 and the inner side wall of the diversion chamber 620, and an overflow space is left between the opening of the inner bin body 680 and the communication port 661. The lower end of the glue injection needle 50 passes through the opening of the inner bin body 680 and extends into the inner bin body 680 to introduce glue into the inner bin body 680. When the glue level in the inner bin body 680 rises to the overflow port 681, the excess glue can flow through the overflow port 681 through the overflow space into the diversion space, and then flow downward to guide the glue to flow along an S-shaped path in the diversion chamber 620. While ensuring the uniform distribution and stable flow of the glue, the residence time of the glue in the vacuum environment is extended, so that the bubbles are more likely and more fully rise and are discharged during the flow process, improving the defoaming efficiency and the purity of the glue, and providing high-quality glue for subsequent precise glue injection operations.

[0038] The conical chamber 630 is generally in a frustum shape with a large upper part and a small lower part, and is used to guide the defoamed glue to flow downward to ensure that the glue can uniformly enter the glue injection nozzle 640.

[0039] The glue injection nozzle 640 is generally cylindrical in shape. The glue injection nozzle 640 is in direct contact with the wire harness 20 for the glue injection operation, and its caliber size can be selected according to the size of the wire harness 20 and the glue injection requirements to ensure that the glue can be accurately injected into the glue injection mold 210 of the wire harness 20. The upper end of the glue injection nozzle 640 has an opening and closing channel 641 extending up and down, and an opening and closing valve 670 for controlling the opening and closing of the opening and closing channel 641 is installed at the opening and closing channel 641. The opening and closing valve 670 is spherical, which is beneficial to enabling the opening and closing valve 670 to closely fit the inner wall of the opening and closing channel 641 to ensure good sealing performance. The upper surface of the opening and closing valve 670 is connected to the inner cavity body 680 through a closing elastic member 671. The closing elastic member 671 is a spring, and the closing elastic member 671 is used to apply an elastic force to the opening and closing valve 670 so that the opening and closing valve 670 moves upward into the opening and closing channel 641 to close the opening and closing channel 641. In other embodiments, the closing elastic member 671 can also adopt elastic components such as reed, and is not limited thereto.

[0040] As Figure 3 , Figure 4 , Figure 5 and Figure 7 shown, the outer cover cylinder 70 is sleeved outside the pretreatment sleeve 60 and moves up and down. The lower end of the outer cover cylinder 70 forms a sealing cover 710, which is used to cover the glue injection mold 210 of the wire harness 20 to form a sealed environment in the glue injection area, effectively preventing external air from entering the glue injection area during the glue injection process, avoiding air mixing into the glue, and thus ensuring the purity of the glue and the glue injection quality. In this embodiment, the glue injection mold 210 of the wire harness 20 is rectangular, and correspondingly, the sealing cover 710 adopts a cuboid shape adapted to the glue injection 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 injection mold 210 in real time, so as to accurately judge the covering situation of the two, ensure the close contact between the sealing cover 710 and the glue injection mold 210, and prevent the problem of insufficient sealing caused by insufficient pressure. The pressure sensor 711 is communicatively connected to the glue storage cylinder 30, the upper vacuum extraction head 650 and the lower vacuum extraction head 720 to control the start and stop of the glue introduction and defoaming operations according to the covering situation of the sealing cover 710 and the glue injection mold 210. A lower vacuum extraction head 720 for evacuating the inside of the sealing cover 710 is provided on the sealing cover 710, which further reduces the air pressure in the glue injection area, ensures that the glue can better fill each part of the wire harness 20 during the glue injection process, and also helps to discharge the bubbles that may remain in the glue.

[0041] Four mounting rods 740 are fixedly installed on the outer cover cylinder 70. The four mounting rods 740 all penetrate downward into the pretreatment sleeve 60 and a seal 730 is fixedly installed at the bottom end. 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 glue in the diversion chamber 620 is full and the defoaming is completed. After closing the communication port 661, it can further ensure the purity of the glue in the diversion chamber 620, and enable the pusher 90 to more effectively push the glue to flow downward, maintain the stability of the glue pressure, ensure that the opening and closing valve 670 can be smoothly opened, and the glue can flow out evenly and stably through the glue filling nozzle 640 for precise glue filling operation. In addition, it can also prevent the glue from flowing back into the vacuum chamber 610 during the glue filling process, ensuring that the glue can only flow in one direction, that is, from the diversion chamber 620 to the glue filling nozzle 640, and avoiding unnecessary flow of the glue.

[0042] A top vacuum head 650 is provided on one of the mounting rods 740, and a suction port communicating with the vacuum chamber 610 is opened in the part extending into the vacuum chamber 610. The top vacuum head 650 is used to perform a vacuum pumping operation on the vacuum chamber 610, so as to form a negative pressure environment in the vacuum chamber 610 and the diversion chamber 620.

[0043] The elastic element 80 is a spring. The elastic element 80 is used to apply an elastic force to the outer cover cylinder 70, so that the outer cover cylinder 70 moves downward relative to the pretreatment sleeve 60 and first contacts the glue filling mold 210 of the wire harness 20, and forms a sealed environment, providing stable external conditions for the glue perfusion in the pretreatment sleeve 60.

[0044] Such as Figure 4 、 Figure 5 、 Figure 7 And Figure 8As shown, the pusher 90 is vertically movably assembled in the diversion chamber 620 and is used to push the glue downward to perform glue filling through the opening and closing valve 670. The pusher 90 is annular and is adapted to the cross-sectional shape of the diversion space. The lower surface of the pusher 90 has a material guiding surface 910 that slopes 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 moves upward and resets, reducing the reset resistance of the pusher 90 and enabling the pusher 90 to return to the initial position more smoothly. During defoaming, the pusher 90 is located in the overflow space. The design of the material guiding surface 910 that slopes downward from the inside to the outside provides a smooth escape path for the bubbles, which is beneficial to guiding the bubbles to rise and be discharged through the communication port 661 under the action of negative pressure, avoiding affecting the defoaming process. After defoaming, the pusher 90 can move downward from the overflow space into the diversion space, so as to closely fit the inner wall of the diversion space, push the defoamed glue in the diversion space downward, increase the pressure of the glue and make it sufficient to overcome the elastic force of the closing elastic member 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 filled into the glue filling mold 210 of the wire harness 20.

[0045] The pusher driving member 920 is used to drive the pusher 90 to move up and down. The pusher driving member 920 includes a pusher motor 921 installed on the outer cover cylinder 70, a threaded rod 922 arranged at the output end of the pusher motor 921, and a lifting sleeve rod 923 arranged on the pusher 90 and threadedly connected to the threaded rod 922. In the embodiment, two groups of pusher driving members 920 are provided and are respectively installed at two mounting rods 740 where the upper vacuum extraction head 650 is not provided. The threaded rod 922 is rotatably installed in the mounting rod 740. The lifting sleeve rod 923 is sleeved on the lower end of the threaded rod 922. A receiving groove 741 for receiving the lifting sleeve rod 923 to allow the lifting sleeve rod 923 to lift is provided at the lower part of the mounting rod 740. The pusher driving member 920 drives the threaded rod 922 to rotate through the pusher motor 921, so that the threaded rod 922 drives the lifting sleeve rod 923 to drive the pusher 90 to move upward or downward through screw transmission, realizing precise up and down movement control of the pusher 90, which is beneficial to enabling the pusher 90 to flexibly adjust its height position in the diversion chamber 620 according to the actual storage amount of the glue and the glue filling requirements, so as to adapt to different glue filling tasks and improve the flexibility and adaptability of the equipment.

[0046] The working process of the embodiment of the glue filling equipment for wire harness processing of the present invention includes the following steps: The first step is placement and transportation. The operator places the wire harness 20 to be processed on the placement tray of the transportation mechanism 110, and the transportation slide rail of the transportation mechanism 110 transports the placement tray from the starting end to the glue filling position.

[0047] Step 2, positioning and sealing: The driving mechanism 130 adjusts the position of the potting mechanism 120 according to the position of the wire harness 20, enabling the potting mechanism 120 to move along the XYZ axes, ensuring that the potting needle 50 is accurately aligned with the potting mold 210 of the wire harness 20 and moves downward. The sealing cover 710 first contacts the potting mold 210 of the wire harness 20 and forms a sealed environment. The pressure sensor 711 monitors the pressure between the sealing cover 710 and the potting mold 210 in real time, thereby accurately judging the covering situation of the two. At this time, the outer cylinder 70 moves downward relative to the pretreatment sleeve 60 under the drive of the elastic element 80. The seal 730 is located in the overflow space, the communication port 661 is in an open state, and the pusher driving member 920 drives the pusher 90 to move upward into the overflow space.

[0048] Step 3, introduction and defoaming: When the sealing cover 710 and the potting mold 210 are covered completely, 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 evacuates the inside of the sealing cover 710 to further reduce the air pressure in the potting area and prevent external air from entering. The upper vacuum head 650 evacuates the vacuum chamber 610 to create a negative pressure environment in the diversion chamber 620 through the communication port 661. The glue storage cylinder 30 drives the piston through compressed air to discharge the glue and introduce it into the inner cavity 680 through the potting needle 50. The glue in the inner cavity 680 flows into the diversion space through the overflow port 681 and flows along an S-shaped path for bubble removal treatment. During this period, the driving mechanism 130 continuously drives the potting needle 50 to move downward, the elastic element 80 is compressed, and the pretreatment sleeve 60 moves downward relative to the outer cylinder 70 until the diversion chamber 620 is filled with glue and the defoaming is completed, and then the pretreatment sleeve 60 moves downward relative to the outer cylinder 70 until the communication port 661 is closed by the seal 730.

[0049] Step 4, potting operation: The pusher motor 921 drives the threaded rod 922 to rotate, driving the pusher 90 to move downward through screw drive. The pusher 90 moves downward from the overflow space into the diversion space, pushing the defoamed glue to flow downward. The glue pressure increases, overcoming the elastic force of the closing elastic member 671, and the opening and closing valve 670 is pushed downward, opening the opening and closing channel 641. The defoamed glue flows out through the potting nozzle 640 and is potted into the potting mold 210 of the wire harness 20.

[0050] Step 5, potting completion and reset: After the potting is completed, the pusher motor 921 drives the pusher 90 to move upward 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 potting mechanism 120 to move upward away from the wire harness 20. The sealing cover 710 is separated from the potting mold 210, and the conveying mechanism 110 conveys the potted wire harness 20 to the next process.

[0051] Thus, in the embodiment of the glue filling device for wire harness processing of the present invention, a pretreatment sleeve 60, an outer cover cylinder 70 and an elastic element 80 are arranged outside the glue filling needle 50. By introducing the glue in the glue filling needle 50 into the diversion chamber 620 and evacuating the vacuum chamber 610 through the upper vacuum extraction head 650, the diversion chamber 620 is communicated with the vacuum chamber 610 through the communication port 661 to form a negative pressure environment. Under the action of the negative pressure, the air mixed in the glue during storage, mixing and transportation forms bubbles and is pumped out, realizing the bubble removal treatment of the glue. Thus, before the glue enters the wire harness 20, the bubbles inside the glue are effectively discharged, making the quality of the glue filled into the wire harness 20 higher, reducing the situation of bubbles mixing into the inside of the wire harness 20 from the source, and improving the quality of the glue filling operation. And through the relative movement between the outer cover cylinder 70 and the pretreatment sleeve 60, the opening and closing of the communication port 661 are controlled, so that when the diversion chamber 620 is filled with glue and the bubble removal is completed, the communication port 661 is closed. After closing the communication port 661, the purity of the glue in the diversion chamber 620 can be further ensured, and the pusher 90 can more effectively push the glue to flow downward, maintaining the stability of the glue pressure, ensuring the smooth opening of the opening and closing valve 670, and enabling the glue to flow out evenly and stably through the glue filling nozzle 640 for accurate glue filling operation.

[0052] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the 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 thus should not be construed as a limitation of the present invention.

[0053] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0054] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A glue filling device for wire harness processing, comprising a workbench, a conveying mechanism arranged on the workbench for placing and conveying wire harnesses, a glue filling mechanism arranged on the workbench for performing glue filling operations on wire harnesses, and a driving mechanism arranged on the workbench for adjusting the position of the glue filling mechanism, characterized in that, The glue filling mechanism includes a glue storage cylinder installed on a driving mechanism, a glue filling needle disposed 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 sleeve forms a sealing cover for covering a glue filling mold of a wire harness, and a lower vacuum extraction head for evacuating the inside of the sealing cover is arranged on the sealing cover. The elastic element is used to apply an elastic force to the outer cover sleeve so that the outer cover sleeve moves downward relative to the pretreatment sleeve to come into contact with the wire harness first; A vacuum chamber, a diversion chamber, and a glue filling nozzle are sequentially formed in the pretreatment sleeve from top to bottom. The lower end of the glue filling needle extends into the diversion chamber to introduce glue into the diversion chamber. An upper vacuum extraction head for evacuating the vacuum chamber is arranged on the pretreatment sleeve. A communication port is provided between the vacuum chamber and the diversion chamber. The outer cover sleeve has a sealing member extending into the pretreatment sleeve to close the communication port. An opening and closing valve is elastically installed up and down at the glue filling nozzle. A pusher is movably assembled up and down in the diversion chamber for pushing the glue downward through the opening and closing valve for glue filling.

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

3. The potting equipment for wire harness processing according to claim 2, wherein, An overflow space is left between the opening of the inner cavity body and the communication port. The pusher is annular and is adapted to the cross-sectional shape of the diversion space. The pusher can move downward from the overflow space into the diversion space to push the glue through the opening and closing valve.

4. A potting device for wire harness processing according to claim 3, characterized in that, The lower surface of the pusher has a material guiding surface inclined downward from inside to outside.

5. The potting equipment for harness processing according to claim 1, wherein A partition plate is fixedly installed between the vacuum chamber and the diversion chamber in the pretreatment sleeve. The communication port is opened on the partition plate. The communication port is annular. An installation rod is fixedly installed on the outer cover sleeve and penetrates downward into the pretreatment sleeve and is fixedly connected with the sealing member.

6. The potting device for wire harness processing according to claim 5, wherein, A pusher driving member for driving the pusher to move up and down is arranged on the outer cover sleeve. The pusher driving member includes a pusher motor installed on the outer cover sleeve, a threaded rod disposed at the output end of the pusher motor, and a lifting sleeve rod disposed on the pusher and threadedly connected with the threaded rod.

7. The potting equipment for harness processing according to claim 6, wherein The threaded rod is rotatably installed in the installation rod. The lifting sleeve rod is sleeved on the lower end of the threaded rod. A receiving groove for receiving the lifting sleeve rod is opened at the lower part of the installation rod.

8. A potting device 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 filling mold and is communicatively connected with the glue storage cylinder, the upper vacuum extraction head, and the lower vacuum extraction head.

9. The potting equipment for harness processing according to claim 1, characterized in that, A tapered chamber with a larger upper part and a smaller lower part is provided between the diversion chamber and the glue filling nozzle.

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

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