An automated frame-applying, glue-filling, and baking production line and its production method

Abstract

This invention relates to the field of thermistor manufacturing technology, and discloses an automatic frame-mounting, glue-filling, and baking production line and method. It includes a conveyor, fixtures, and auxiliary mechanisms. The auxiliary mechanisms include a dispensing robot, a feeding guide rail, a frame-mounting device, a tunnel drying oven, a glue-filling robot, a mounting base, a locking device, and a CCD camera. During processing, multiple thermistor PCB boards are first fixed using fixtures, arranged in a uniformly spaced line. This application uses a conveyor for automatic fixture transport, and through the cooperation of the dispensing robot, frame-mounting device, tunnel drying oven, and glue-filling robot, dispensing, frame-mounting, drying, and glue-filling can be performed sequentially in a continuous process, resulting in higher production efficiency and improved processing efficiency for the installation of the thermistor frame.

Description

Technical Field

[0001] This invention relates to the field of thermistor manufacturing technology, and in particular to an automatic frame-applying, glue-filling, and baking production line and its manufacturing method. Background Technology

[0002] A thermistor is a semiconductor resistor whose resistance value is extremely sensitive to temperature. Its working principle is based on the characteristic that the resistivity of semiconductor materials changes with temperature. It is mainly divided into two categories: positive temperature coefficient (PTC) and negative temperature coefficient (NTC).

[0003] During the production of thermistors, the U-shaped frame needs to be glued and fixed to its PCB board using AB glue. The gluing and fixing of the U-shaped frame requires processes such as dispensing glue, attaching the frame, drying, and potting glue. Most of the processing equipment under the existing technology is a single-process processing equipment. After processing in the corresponding process, the equipment is transferred to the next process. This processing method is inefficient. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic frame-applying, glue-filling, and baking production line and production method, which can improve the processing efficiency of frame installation.

[0005] To achieve the above objectives, the present invention provides an automatic frame-applying, glue-filling, and glue-baking production line; including a conveyor, on which a fixture is provided, and also including auxiliary mechanisms; The auxiliary mechanism includes a dispensing robot, a feeding guide rail, a frame-applying device, a tunnel drying oven, and a glue-filling robot. The dispensing robot is located behind the left side of the conveyor, the feeding guide rail is located in front of the vibratory feeder, the frame-applying device is located in front of the feeding guide rail, the tunnel drying oven is located to the right of the frame-applying device, and the glue-filling robot is located to the right of the tunnel drying oven. The glue gun assembly of the dispensing robot and the glue-filling robot has a CCD camera mounted on both sides of its housing via a mounting base and a locking device.

[0006] The adhesive applicator includes a frame, a lead screw slide, and a position adjustment assembly. The frame is located on the ground behind the conveyor; the lead screw slide is mounted on the top of the frame; and the position adjustment assembly is located on the slide base of the lead screw slide.

[0007] The position adjustment component includes a frame-fitting robot and a vacuum suction cup component. The frame-fitting robot is mounted on the slide of the lead screw slide table, and the vacuum suction cup component is disposed on the working head of the frame-fitting robot.

[0008] The tunnel drying oven is equipped with a chain conveyor for transporting the fixture, and shielding devices are installed on both sides.

[0009] The shielding device includes a drive assembly and a shielding plate. The drive assembly is disposed on the top shell of the tunnel drying oven. The shielding plate is connected to the output end of the drive assembly and slides against the outer shell of the tunnel drying oven.

[0010] The locking device includes a U-shaped bracket and a snap-fit ​​assembly. The U-shaped bracket passes through the mounting base and the snap-fit ​​assembly respectively and is close to the CCD camera.

[0011] The locking assembly includes a locking block and a retaining ring. The locking block is slidably connected to the mounting base and integrally formed with the retaining ring, and is detachably connected to the U-shaped frame. The retaining ring is slidably fitted onto the housing of the CCD camera and abuts against the limiting ring on the housing of the CCD camera.

[0012] One method for automatic frame bonding, glue application, and baking production, using the aforementioned automatic frame bonding, glue application, and baking production line, includes the following steps: Multiple thermistor PCBs are fixed in place using a fixture, and are arranged in a line with uniform spacing during fixing. AB glue is applied to the position where the herringbone frame is installed on the PCB board of the thermistor using a dispensing robot. The jig is transported by a conveyor to the frame-attaching device, where the frame is attached and installed. After the frame is attached, the conveyor continues to transport the fixture, which enters the tunnel drying oven and is then dried by hot air blowing at the joint of the frame. The internal conveyor of the tunnel drying oven outputs the fixture, and the fixture continues to be transported via the conveyor on its right side. The fixture is transported to the glue-dispensing robot, where glue is dispensed. After the glue is applied, the fixture is transported to the material collection point via a conveyor, and finally the material is collected manually.

[0013] This invention discloses an automatic frame-applying, glue-filling, and baking production line. During processing, multiple thermistor PCB boards are first fixed using a fixture, arranged in a uniformly spaced line. This application uses a conveyor to automatically transport the fixture, and with the cooperation of a dispensing robot, a frame-applying device, a tunnel drying oven, and a glue-filling robot, dispensing, frame-applying, drying, and glue-filling can be performed continuously, resulting in higher processing efficiency and thus improving the processing efficiency of U-shaped frame installation. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0015] Figure 1 This is a schematic diagram of the overall structure of the automatic frame-applying, glue-filling, and baking production line of the present invention.

[0016] Figure 2 This is a schematic diagram of the lead screw slide of the present invention.

[0017] Figure 3 This is a schematic diagram of the mounting base of the present invention.

[0018] Figure 4 This is a schematic diagram of the locking block of the present invention.

[0019] Figure 5 This is a flowchart of an automatic frame-applying, glue-filling, and baking production method according to the present invention.

[0020] In the diagram: 101-Conveyor, 102-Jig, 103-Dispensing robot, 104-Feeding guide rail, 105-Tunnel drying oven, 106-Dispensing robot, 107-Dispensing gun assembly, 108-Mounting base, 109-CCD camera, 110-Frame, 111-Screw slide, 112-Frame attaching robot, 113-Vacuum suction cup component, 114-Drive assembly, 115-Blinding plate, 116-U-shaped frame, 117-Locking block, 118-Snap ring. Detailed Implementation

[0021] The embodiments of the present invention are described in detail below. 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 explain the present invention, but should not be construed as limiting the present invention.

[0022] like Figures 1 to 4 As shown, where Figure 1 This is a schematic diagram of the overall structure of an automated frame-applying, glue-filling, and baking production line. Figure 2 This is a structural diagram of a lead screw slide. Figure 3 This is a structural diagram of the mounting base. Figure 4 This is a schematic diagram of the locking block. The present invention provides an automatic frame-applying, glue-dispensing, and baking production line: including a conveyor 101, a fixture 102, and auxiliary mechanisms. The auxiliary mechanisms include a dispensing robot 103, a feeding guide rail 104, a frame-applying device, a tunnel drying oven 105, a glue-dispensing robot 106, a mounting base 108, a locking device, and a CCD camera 109. The glue-applying device includes a frame 110, a lead screw slide 111, and a position adjustment assembly. The position adjustment assembly includes a frame-applying robot 112 and a vacuum suction cup component 113. The locking device includes a U-shaped frame 116 and a snap-fit ​​assembly, which includes a locking block 117 and a retaining ring 118. The aforementioned solution can improve the processing efficiency of the U-shaped frame installation. It is understood that the aforementioned solution can realize the installation and continuous production of U-shaped frames, reduce transfer time, and improve processing efficiency.

[0023] In this embodiment, a fixture 102 is provided on the conveyor 101. Multiple conveying rollers of the conveyor 101 are driven to rotate using a sprocket and chain structure. The fixture 102 has corresponding thermistor mounting adapter cavities, and a mating plate and a pressure plate are sequentially arranged on its base plate from the side upwards. The mating plate has an opening that aligns with the U-shaped frame to facilitate subsequent hot air passage. The pressure plate prevents vertical movement of the U-shaped frame after it is fitted and installed. Furthermore, all standard parts used in this application can be purchased commercially, and can be customized according to the description and drawings. The specific connection methods for each part all employ conventional methods such as bolts, rivets, and welding, which are mature technologies in the prior art. The control method is automatic control via a controller. The controller's control circuit can be easily programmed by those skilled in the art and is common knowledge in the field. Since this application is primarily for protecting mechanical devices, the control method and circuit connections will not be explained in detail here.

[0024] Preferably, the dispensing robot 103 is located behind the left side of the conveyor 101, the feeding guide rail 104 is located in front of the vibratory feeder, the frame-applying device is located in front of the feeding guide rail 104, the tunnel drying oven 105 is located to the right of the frame-applying device, and the glue-dispensing robot 106 is located to the right of the tunnel drying oven 105. The dispensing robot 103 is used to drive the glue gun assembly 107 on its working head to position and dispense glue. The corresponding AB glue storage cylinder is fixedly located on its working head near the glue gun assembly 107 and is connected to the glue dispensing mechanism of the glue gun assembly 107 through a glue pump and pipeline. The feeding guide rail 104 is located on the discharge side of the vibratory feeder (not shown in the figure) and is used to sequentially transport the U-shaped frame to the picking point. The frame-applying device is used to attract and move the U-shaped frame, and finally attach it to the dispensing area on the PCB board of the thermistor. The tunnel drying oven 105 is used for drying. When the glue-dispensing robot 106 is working, it drives the glue gun assembly 107 on its working head (the glue gun assembly 107 is connected to the glue pump through a matching pipe) to position and perform glue dispensing.

[0025] The glue gun assembly 107 of the dispensing robot 103 and the dispensing robot 106 are respectively equipped with CCD cameras 109 on both sides of the housing via mounting bases 108 and locking devices. The CCD cameras 109 are used for precise positioning of the dispensing and dispensing points. A glue volume calibration mechanism can be installed on one side of the ground of both the dispensing robot 103 and the dispensing robot 106. The glue volume calibration mechanism consists of a support platform, a high-precision electronic weighing device, and a receiving cylinder placed on the sensor working part of the electronic weighing device. Subsequently, after a certain processing time, the dispensing robot 103 and the dispensing robot 106 can adjust the position of the glue gun assembly 107 according to a preset program, so that its glue outlet is above the receiving cylinder. Then, through the same time action as dispensing or dispensing, the electronic weighing device is used for weighing to determine whether the glue volume is uniform. If it is uneven, the control system can activate the corresponding alarm light to provide an alarm prompt. Furthermore, since the dispensing or potting time is consistent each time, the weights can be stacked during weighing. This means that if the dispensing volume is correct, the glue inside the collection container does not need to be emptied. If problems arise later, the glue can be emptied for convenient weighing from zero volume.

[0026] Preferably, the frame 110 is disposed on the ground behind the conveyor 101; the lead screw slide 111 is mounted on the top of the frame 110; and the position adjustment assembly is disposed on the slide base of the lead screw slide 111. The support column at the bottom of the frame 110 is L-shaped and has through holes for easy fixing with anchor bolts. The working principle of the lead screw slide 111 is as follows: the ball screw is rotated by the action of a servo motor with a brake mechanism and an encoder. The T-shaped mating nut of the ball screw is mounted on the slide base. The slide base is connected to the linear slider of the linear guide slider assembly through positioning pins and bolts, thereby driving the frame-attaching robot 112 mounted on the top of the slide base to move and achieve position adjustment.

[0027] Preferably, the frame-applying robot 112 is mounted on the slide of the lead screw slide 111; the vacuum suction cup component 113 is disposed on the working head of the frame-applying robot 112. During operation, the position of the vacuum suction cup of the vacuum suction cup component 113 is adjusted by the multi-axis structure of the frame-applying robot 112, and then the U-shaped frame is adsorbed and transferred to realize the frame-applying process.

[0028] Preferably, the tunnel drying oven 105 is equipped with a chain conveyor for transporting the fixture 102, and has shielding devices on both sides. A vertically arranged air distribution duct is installed inside the tunnel drying oven 105, with multiple air outlets at the bottom of the duct. The air distribution duct is connected to the outlet of a warm air blower via a pipe. The warm air blower is installed at the rear of the oven body, and a control panel is located at the front of the oven body. During drying, the warm air blower delivers hot air to the air distribution duct to meet the working requirements. Then, the hot air is blown vertically downwards to dry the U-shaped frame passing through the bottom of the air distribution duct.

[0029] Preferably, the drive assembly 114 is disposed on the top shell of the tunnel drying oven 105; the baffle plate 115 is connected to the output end of the drive assembly 114 and slides against the outer shell of the tunnel drying oven 105. The drive assembly 114 consists of a bracket fixed to the oven body and an electric push rod. The electric push rod is mounted on the bracket, and its output end is fixedly connected to the baffle plate 115. The baffle plate 115 is provided with a notch for the fixture 102 to pass through. This application uses hot air drying, and the temperature can be set as needed to meet the requirements. Since the baffle plate 115 has hot air exhaust ports on both sides, direct discharge would affect the processing environment temperature. In this case, an exhaust fan (not shown in the figure) can be installed on the rear side of the baffle plate 115 to extract the discharged hot air and transport it to the external environment of the processing area through a movable pipe, thereby reducing the impact of hot air on the processing environment temperature. Guide rails are symmetrically installed on the furnace body, and linear sliders are set on the guide rails. The baffle plate 115 is connected to the linear slider through a connecting plate and bolts, which facilitates the improvement of its vertical movement stability. When the baffle plate 115 rises to its highest point, internal maintenance can be easily carried out.

[0030] Preferably, the U-shaped bracket 116 passes through the mounting base 108 and the snap-fit ​​assembly, and is close to the CCD camera 109. The U-shaped bracket 116 has an externally threaded stepped end on the side away from the limiting rectangular plate for easy installation of a nut for positioning.

[0031] Preferably, the locking block 117 is slidably connected to the mounting base 108 and integrally formed with the retaining ring 118, and is detachably connected to the U-shaped frame 116; the retaining ring 118 is slidably fitted onto the housing of the CCD camera 109 and abuts against the limiting ring on the housing of the CCD camera 109. The locking block 117 is a rectangular block and has a through hole through which the circular shaft of the U-shaped frame 116 passes. The retaining ring 118 has a circular cavity that slidably engages with the outer housing of the CCD camera 109. The bottom of the limiting ring of the CCD camera 109 has symmetrically arranged integral cylinders, which are inserted into the insertion holes of the mounting base 108 to prevent the CCD camera 109 from rotating after installation. The model of the CCD camera 109 is RC-113B, and the industrial control computer model that works with it is QL-APC-070-A20.

[0032] When using this invention to improve the processing efficiency of the U-shaped frame installation, multiple thermistor PCB boards are first fixed by the fixture 102. During fixing, they are arranged in a line with uniform intervals. This application uses the conveyor 101 to automatically transport the fixture 102. With the cooperation of the dispensing robot 103, the frame attaching device, the tunnel drying oven 105, and the glue-filling robot 106, dispensing, frame attaching (after frame attaching, the fixture 102 needs to be installed with a mating plate and a pressure plate in sequence), drying, and glue-filling can be carried out continuously, resulting in higher processing efficiency and thus improving the processing efficiency of the U-shaped frame installation.

[0033] like Figure 5 As shown, where Figure 5 This is a flowchart of an automatic frame bonding, glue filling, and baking production method according to the present invention. The present invention provides an automatic frame bonding, glue filling, and baking production method using the automatic frame bonding, glue filling, and baking production line, and includes the following steps: S1: The PCB boards of multiple thermistors are fixed by the fixture 102, and they are arranged in a line with uniform intervals during fixing. S2: AB glue is applied to the position where the herringbone frame is installed on the PCB board of the thermistor by the dispensing robot 103; S3: The jig 102 is conveyed by the conveyor 101 to the frame attaching device, and the frame attaching device is used to attach and install the U-shaped frame. S4: After the frame is attached, the conveyor 101 continues to transport the fixture 102. The fixture 102 enters the tunnel drying oven 105 and the hot air blows and dries the area where the frame is attached through the tunnel drying oven 105. S5: The internal conveyor of the tunnel drying oven 105 outputs the fixture 102 and continues to transport the fixture 102 through the right-side conveyor 101. S6: Fixture 102 is transported to glue dispensing robot 106 and glue is dispensed by glue dispensing robot 106; S7: After the glue is applied, the jig 102 is conveyed to the material collection point by the conveyor 101, and finally the material is collected manually.

[0034] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. An automatic frame-applying, glue-filling, and baking production line, comprising a conveyor, wherein a fixture is provided on the conveyor; Its features are, It also includes auxiliary mechanisms; The auxiliary mechanism includes a dispensing robot, a feeding guide rail, a frame-applying device, a tunnel drying oven, and a glue-filling robot. The dispensing robot is located behind the left side of the conveyor, the feeding guide rail is located in front of the vibratory feeder, the frame-applying device is located in front of the feeding guide rail, the tunnel drying oven is located to the right of the frame-applying device, and the glue-filling robot is located to the right of the tunnel drying oven. The glue gun assembly of the dispensing robot and the glue-filling robot has a CCD camera mounted on both sides of its housing via a mounting base and a locking device.

2. The automatic frame-applying, glue-filling, and baking production line as described in claim 1, characterized in that, The adhesive applicator includes a frame, a lead screw slide, and a position adjustment assembly. The frame is located on the ground behind the conveyor; the lead screw slide is mounted on the top of the frame; and the position adjustment assembly is located on the slide base of the lead screw slide.

3. The automatic frame-applying, glue-filling, and baking production line as described in claim 2, characterized in that, The position adjustment assembly includes a frame-fitting robot and a vacuum suction cup component. The frame-fitting robot is mounted on the slide of the lead screw slide table; the vacuum suction cup component is disposed on the working head of the frame-fitting robot.

4. The automatic frame-applying, glue-filling, and baking production line as described in claim 1, characterized in that, The tunnel drying oven is equipped with a chain conveyor for transporting the fixture, and shielding devices are installed on both sides.

5. The automatic frame-applying, glue-filling, and baking production line as described in claim 4, characterized in that, The shielding device includes a drive assembly and a shielding plate. The drive assembly is disposed on the top shell of the tunnel drying oven. The shielding plate is connected to the output end of the drive assembly and slides against the outer shell of the tunnel drying oven.

6. The automatic frame-applying, glue-filling, and baking production line as described in claim 1, characterized in that, The locking device includes a U-shaped bracket and a snap-fit ​​assembly. The U-shaped bracket passes through the mounting base and the snap-fit ​​assembly respectively and is close to the CCD camera.

7. The automatic frame-applying, glue-filling, and baking production line as described in claim 6, characterized in that, The locking assembly includes a locking block and a retaining ring. The locking block is slidably connected to the mounting base and integrally formed with the retaining ring, and is detachably connected to the U-shaped frame. The retaining ring is slidably fitted onto the housing of the CCD camera and abuts against the limiting ring on the housing of the CCD camera.

8. An automatic frame bonding, glue dispensing, and baking production method, employing the automatic frame bonding, glue dispensing, and baking production line as described in any one of claims 1 to 7, characterized in that, Includes the following steps: Multiple thermistor PCBs are fixed in place using a fixture, and are arranged in a line with uniform spacing during fixing. AB glue is applied to the position where the herringbone frame is installed on the PCB board of the thermistor using a dispensing robot. The jig is transported by a conveyor to the frame-attaching device, where the frame is attached and installed. After the frame is attached, the conveyor continues to transport the fixture, which enters the tunnel drying oven and is then dried by hot air blowing at the joint of the frame. The internal conveyor of the tunnel drying oven outputs the fixture, and the fixture continues to be transported via the conveyor on its right side. The fixture is transported to the glue-dispensing robot, where glue is dispensed. After the glue is applied, the fixture is transported to the material collection point via a conveyor, and finally the material is collected manually.

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