An automatic feeding hot riveting assembly device and hot riveting method

Abstract

The present application relates to the technical field of part assembling equipment, and particularly relates to a hot riveting assembling device and a hot riveting method. The hot riveting assembling device comprises a transfer mechanism, a heating assembly for heating a nut to a preset temperature, and a load mechanism for placing an assembling part, the assembling part is provided with a mounting portion capable of deforming at the preset temperature, and the transfer mechanism is used for transferring the nut in the heating assembly to the mounting portion of the assembling part and keeping the nut at the preset temperature during the transferring process. The nut can be continuously heated by the transfer mechanism to keep the nut at a stable temperature, so that the heat loss of the nut can be avoided during the transferring process, the temperature of the nut during assembly is ensured to be suitable for the assembling part, and the assembly effect of the nut is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of part assembly equipment, in particular to an automatic feeding hot riveting assembly device and a hot riveting method. BACKGROUND

[0002] At present, the assembly method of product parts and copper nuts of plastic material is to manually feed by an operator, and the copper nut is installed in the clamping groove of the plastic part by the way of heating and pressing of a tooling. Because the surface temperature of the copper nut will decrease due to the influence of the external environment temperature during the movement of the copper nut after heating, the temperature of the copper nut is usually estimated and appropriately increased during heating in the existing operation. However, due to the frequent change of the environmental temperature and the low monitoring accuracy, there are still problems of insufficient heating temperature or excessive heating temperature of the copper nut, which finally leads to poor assembly effect of the product parts. SUMMARY

[0003] In order to overcome the defects of the prior art, the technical problem to be solved by the present application is to provide an automatic feeding hot riveting assembly device and a hot riveting method, which can ensure the assembly effect between the copper nut and the assembly part.

[0004] In order to solve the above technical problems, the technical scheme adopted by the present application is to provide an automatic feeding hot riveting assembly device, which comprises a transfer mechanism, a heating assembly for heating the nut to a preset temperature, and a load carrying mechanism for placing the assembly part. The assembly part is provided with a mounting portion capable of deforming at a preset temperature. The transfer mechanism is used to transfer the nut in the heating assembly to the mounting portion of the assembly part and keep the nut at a preset temperature during the transfer process.

[0005] Another technical scheme adopted by the present application is to provide an automatic feeding hot riveting method, characterized in that it comprises the following steps:

[0006] Step S1: heating the nut to be heated to a preset temperature in the heating assembly;

[0007] Step S2: transferring the nut heated to a preset temperature to the assembly part, and keeping the nut at a preset temperature range by heating during the transfer process;

[0008] Step 3: After the nut transferred to the assembly part is pressed into the installation part, cold air is applied to the surface of the nut and the installation part. The present application has the beneficial effect of providing an automatic feeding hot riveting assembly device and method, which can continuously heat the nut to keep it at a stable temperature through the setting of the transfer mechanism, thereby avoiding heat loss of the nut during the transfer process, ensuring that the nut has a temperature suitable for assembly with the assembly part when assembling, improving the assembly effect of the nut, reducing the probability of damage to the assembly part, and improving the success rate and assembly efficiency of the assembly between the nut and the assembly part. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 Fig. 1 shows the structure of an automatic feeding hot riveting assembly device of the present application;

[0010] Figure 2 Fig. 2 shows the structure of the heating assembly of the automatic feeding hot riveting assembly device of the present application; Figure 1

[0011] Figure 3 Fig. 3 shows the structure of the heating assembly of the automatic feeding hot riveting assembly device of the present application; Figure 2

[0012] Figure 4 Fig. 4 shows the structure of the carrying mechanism of the automatic feeding hot riveting assembly device of the present application; Figure 1

[0013] Figure 2 Fig. 5 shows the structure of the carrying mechanism of the automatic feeding hot riveting assembly device of the present application; Figure 6

[0014] Figure 7 Fig. 6 shows the structure of the transfer mechanism of the automatic feeding hot riveting assembly device of the present application;

[0015] Figure 8 Fig. 7 shows a side view of the automatic feeding hot riveting assembly device of the present application;

[0016] Figure 9 Fig. 8 shows a state diagram of the automatic feeding hot riveting assembly device of the present application before the nut is clamped by the clamping jaw;

[0017] Figure 8 Fig. 9 shows an enlarged view of part A in Fig. 8; Figure 10

[0018] Figure 11 Fig. 10 shows a state diagram of the automatic feeding hot riveting assembly device of the present application when the nut is clamped by the clamping jaw;

[0019] Figure 10 Fig. 11 shows an enlarged view of part B in Fig. 10; Figure 12 ​​​​​Enlarged view of part B;

[0020] Figures 1 to 11 Fig. 1 shows a schematic flow chart of a hot riveting method with automatic feeding according to the present application;

[0021] Label explanation:

[0022] 1, control system; 2, workbench; 3, vibration disc; 4, carrying mechanism; 41, second linear slide rail; 42, carrying plate; 421, placing groove; 43, transverse air cylinder; 44, air cooling assembly; 45, assembly station; 46, feeding station; 47, limiting rod; 5, heating assembly; 51, heating block; 511, heating groove; 52, fixed plate; 53, first heating rod; 54, first temperature sensor; 55, ejector rod; 56, ejector rod air cylinder; 57, air cylinder bottom plate; 58, first linear slide rail; 59, ceramic heat insulation plate; 6, transfer mechanism; 61, moving assembly; 611, lifting air cylinder; 612, third linear guide rail; 613, fourth linear guide rail; 614, support plate; 62, sliding assembly; 621, sliding rod; 622, spring; 623, connecting plate; 63, heat conduction assembly; 631, mounting plate; 632, heat conduction rod; 633, second heating rod; 64, clamping assembly; 641, clamping jaw; 7, linear vibration sieve; 71, linear vibration plate; 711, linear vibration groove; 72, connecting plate; 73, linear vibration cover plate; 74, vibration carrying plate; 75, linear vibration vibrator; 8, nut. DETAILED DESCRIPTION

[0023] To make the technical content of the present application, the purposes and effects achieved more clear, the following will be described in detail in conjunction with the embodiments and the accompanying drawings.

[0024] Please refer to Figure 12 The present application provides a hot riveting assembly device with automatic feeding, which comprises a transfer mechanism, a heating assembly for heating a nut to a preset temperature, and a carrying mechanism for placing an assembly part, wherein the assembly part is provided with a mounting part capable of deforming at the preset temperature, and the transfer mechanism is used for transferring the nut in the heating assembly to the mounting part of the assembly part and keeping the nut at the preset temperature during the transferring process.

[0025] From the above description, it can be seen that the present application has the beneficial effects that: by setting the transfer mechanism, the nut can be continuously heated to keep it at a stable temperature, so that the loss of heat of the nut during the transferring process can be avoided, and the temperature of the nut during assembly is ensured to be suitable for the assembly part, thereby improving the assembly effect of the nut.

[0026] Further, the transferring mechanism comprises a heat conduction assembly and a clamping assembly; the clamping assembly comprises clamping jaws formed by two or more elastic sheets; the heat conduction assembly comprises a heat conduction rod arranged in a clamping space of the clamping jaws and movable along a center line of the clamping jaws, and the heat conduction rod is matched with the screw hole of the nut.

[0027] As can be seen from the above description, the heat conduction rod is matched with the screw hole of the nut, so that the heat conduction rod can be inserted into the nut, thereby improving the temperature of clamping on one hand and further heating the inner layer of the nut through the heating effect of the heat conduction rod on the other hand, so as to compensate for the heating temperature difference of the nut in the heating assembly.

[0028] Further, the heat conduction rod has a hollow structure, and a heating rod and a temperature sensor in contact with the heating rod are arranged in the heat conduction rod.

[0029] As can be seen from the above description, the heat conduction rod avoids heat loss during the transfer of the nut by heating through the heating rod, and ensures the heating accuracy of the nut by monitoring the heating temperature through the temperature sensor.

[0030] Further, the heating assembly comprises a heating block and a top rod; the heating block is provided with a heating groove matched with the nut, and the top rod is movably arranged in the heating groove and movable along the direction of the slot opening of the heating groove.

[0031] As can be seen from the above description, the top rod can lift the nut in the heating groove to the outside, and the nut can be transferred from the heating groove to the clamping assembly by the transferring mechanism, thereby improving the efficiency of the transfer process of the nut.

[0032] Further, the heating assembly and the transferring mechanism are arranged adjacent to each other along a horizontal direction and are located below the clamping assembly.

[0033] The transferring mechanism further comprises a moving assembly movable in the horizontal direction and the vertical direction, the heat conduction assembly is connected to the moving end of the moving assembly, and the clamping assembly is arranged below the heat conduction assembly and is slidably connected to the heat conduction assembly in the vertical direction through a sliding assembly.

[0034] As can be seen from the above description, the heat conduction assembly and the clamping assembly can not only move between the transferring mechanism and the heating assembly through the moving assembly to realize the transfer of the nut, but also move the heat conduction rod of the heat conduction assembly relative to the clamping jaws of the clamping assembly through the action of the moving assembly, so that the structure is more simplified, thereby reducing the cost of the equipment.

[0035] Further, the sliding assembly comprises a slide rod connected to the heat conduction assembly and the clamping assembly respectively, and a spring sleeved outside the slide rod, and the two ends of the spring are connected to the heat conduction assembly and the clamping assembly respectively.

[0036] From the above description, under the action of the spring and the slide bar, the heat conduction rod on the heat conduction assembly can continue to move towards the heating groove direction relative to the clamping assembly, and under the guidance of the heat conduction rod, the nut can be smoothly clamped into the clamping jaw.

[0037] Further, the heating assembly further comprises a vertically arranged air cylinder bottom plate, the clamping assembly comprises a connecting plate in sliding connection with the slide bar, the clamping jaw is arranged on the lower surface of the connecting plate, the clamping jaw is coaxial with the slot opening of the heating groove, and the clamping assembly is in contact with the air cylinder bottom plate when the clamping jaw is in contact with the upper surface of the heating block.

[0038] From the above description, when the clamping jaw is coaxial with the slot opening of the heating groove and the clamping jaw is in contact with the upper surface of the heating block, the air cylinder bottom plate plays a limiting role on the clamping assembly, thereby keeping the clamping jaw at the slot opening. By continuing to move the heat conduction assembly towards the heating groove direction, the heat conduction rod can be inserted into the nut so that the heat conduction rod and the nut can form a clamping state, and the nut can be lifted along the slot opening into the clamping space of the clamping jaw. Through the further clamping of the elastic piece, the stability of the nut clamping process is ensured, and the nut surrounded by the elastic piece has a heat preservation effect, thereby improving the heat conduction efficiency of the heat conduction rod.

[0039] Further, the object carrying mechanism is provided with a placement groove for placing the assembly and a limiting rod arranged adjacent to the placement groove, the height of the limiting rod is equal to the height of the clamping jaw.

[0040] From the above description, the limiting rod plays a limiting role on the clamping assembly, and by continuing to move the heat conduction assembly towards the placement groove direction, the nut is fixed into the mounting portion of the assembly by the heat conduction rod pressing down, thereby realizing the rapid assembly of the nut and the assembly.

[0041] Further, the object carrying mechanism is provided with an air cooling assembly, and the air outlet of the air cooling assembly is arranged towards the placement groove.

[0042] From the above description, the air cooling assembly starts air cooling and releases a cold air flow with a very fast flow rate to the contact area between the end of the heat conduction rod and the nut, thereby taking away a large amount of heat on the heat conduction rod end, the nut and the assembly, so that the mounting portion that has just been melted by the heat of the nut can quickly solidify, and the tightening is realized in advance before the nut cools down by itself.

[0043] Further, it further comprises a vibrating disc and a linear vibrating screen connected with the vibrating disc, the linear vibrating screen is provided with a linear vibrating groove matched with the nut, and the side wall of the heating groove is provided with an opening in communication with the slot opening of the linear vibrating groove.

[0044] From the above description, under the action of the vibrating disc and the linear vibrating screen, the nut can be orderly transported into the heating groove.

[0045] Referring to Figures 1 to 3 The application provides a hot riveting method with automatic feeding, comprising the following steps:

[0046] Step S1: placing the nut to be heated into the heating assembly and heating to a preset temperature;

[0047] Step S2: transferring the nut heated to the preset temperature to the assembly part, and keeping the nut at the preset temperature range by heating during the transferring process;

[0048] Step 3: after the nut transferred to the assembly part is pressed into the mounting part, cold air is applied to the surface of the nut and the mounting part. As can be seen from the above description, the application has the beneficial effects that: by continuously heating the nut to keep it at a stable temperature, the loss of heat of the nut during the transferring process can be avoided, ensuring that the nut has a temperature suitable for the assembly part during assembly, and improving the assembly effect of the nut. At the same time, when the nut contacts the mounting part, heat is transferred to the mounting part, causing the mounting part to deform, and then the nut can be smoothly pressed into the deformed space of the mounting part. After the nut is assembled into the mounting part, cold air is applied to the surface of the nut and the mounting part, which can cause the deformed area of the mounting part to quickly solidify, preventing the nut from cooling down on its own, and fastening it in advance, so that the nut is tightly clamped in the mounting part. On the one hand, it can avoid assembly deformation between the mounting part and the nut, and on the other hand, it can quickly improve the assembly efficiency.

[0049] The hot riveting assembly device with automatic feeding provided by the application is mainly applied in the assembly process between plastic assembly parts, such as plastic rear shells or front shells, and metal nuts.

[0050] Referring to Figure 12 The embodiment one of the application provides a hot riveting assembly device with automatic feeding, which comprises a control system 1, a horizontally arranged workbench 2, a vibrating disc 3, a carrying mechanism 4 arranged on the workbench, a heating assembly 5, a transferring mechanism 6 and a linear vibrating screen 7. The carrying mechanism, the heating assembly, the linear vibrating screen and the vibrating disc are sequentially arranged along a horizontal direction. The transferring mechanism is arranged on one side of the carrying mechanism and the heating assembly.

[0051] In the embodiment, the vibration disc is arranged outside the workbench, and the linear vibration screen comprises a linear vibration plate 71, a connecting plate 72, a linear vibration cover plate 73, a vibration carrier plate 74 arranged on the workbench, and a linear vibration vibrator 75 arranged on the vibration carrier plate. The lower surface of the linear vibration plate is connected with the linear vibration vibrator through the connecting plate, and the two ends of the linear vibration plate are respectively communicated with the discharge port of the vibration disc and the heating assembly. The linear vibration plate is provided with two rows of linear vibration grooves 711 adapted to the nuts 8 along the length direction, and preferably, the nuts are copper nuts. The linear vibration cover plate is connected with the upper surface of the linear vibration plate and covers the linear vibration grooves. The nuts poured into the feeding port of the vibration disc are screened through the vibration disc and then enter the linear vibration grooves through the discharge port of the vibration disc, and are orderly arranged in the linear vibration grooves. Under the action of the linear vibration vibrator, the nuts in the heating grooves sequentially and orderly move along the direction of the heating assembly.

[0052] In the embodiment, the linear vibration groove is provided with an infrared sensor, and the infrared sensor, the linear vibration vibrator and the vibration disc are electrically connected with the control system. The infrared sensor is used for sensing whether there is a nut waiting to be conveyed in the linear vibration groove. When the infrared sensor senses that there is no nut to be conveyed in the linear vibration groove, the control system triggers the linear vibration vibrator and the vibration disc to start conveying the nut material until the nut material is arranged in the linear vibration groove.

[0053] In the embodiment, the heating assembly comprises a heating block 51, a fixed plate 52, a first heating rod 53, a first temperature sensor 54, a top rod 55, a top rod cylinder 56 and a cylinder bottom plate 57. Specifically, the cylinder bottom plate is vertically arranged on the workbench, the cylinder bottom plate is provided with a first vertical sliding rail 58 vertically arranged thereon and a first vertical sliding block slidingly arranged on the first vertical sliding rail, the top rod cylinder is vertically arranged on the cylinder bottom plate, and the movable end of the top rod cylinder is connected with the first vertical sliding block. The heating block is arranged opposite to the linear vibration plate, and the end of the heating block close to the linear vibration plate is provided with two heating grooves 511 located in the same straight line direction with the two linear vibration grooves. The first heating rod and the first temperature sensor are respectively embedded in the heating block, and the first temperature sensor is in contact with the first heating rod. The heating block can be heated by the first heating rod, so that the heating grooves have heat. The heating grooves are adapted to the nuts, the groove of the heating groove is located on the upper surface of the heating block, and the side wall of the heating groove is provided with an opening communicated with the groove of the linear vibration groove. The number of top rods is two, and the two top rods are movably embedded in the two heating grooves, and the top rods are connected with the first vertical sliding block through the fixed plate, and the fixed plate is located below the linear vibration plate.

[0054] In this embodiment, a ceramic heat insulation plate 59 is arranged between the heating block and the workbench. On one hand, the ceramic heat insulation plate can prevent heat loss and heat transfer. On the other hand, the ceramic heat insulation plate can prevent heat from being transferred to the ejector cylinder, so as to prevent the sealing ring on the ejector cylinder from being damaged.

[0055] In this embodiment, the first heating rod, the first temperature sensor and the ejector cylinder are electrically connected to the control system. The first temperature sensor senses the temperature of the heating block and feeds back to the control system. The control system includes a control panel. The control system displays the temperature information detected by the first temperature sensor on the control panel. When the control system receives the temperature detected by the first temperature sensor and the temperature is lower than the preset temperature, the control system starts the first heating rod to heat the heating block, so that the heat in the heating groove is kept at the preset temperature, which is the optimal temperature range required by the nut installation process. The control system can drive the first linear slide to move upward or downward by the ejector cylinder before the nut is transferred to the transfer assembly, so as to drive the ejector rod on the fixed plate to lift upward in the heating groove. When the ejector rod is lifted to the groove opening of the heating groove, the opening of the heating groove can be blocked, the nut in the linear vibration groove can be prevented from continuing to move to the heating groove, and the nut heated to the preset temperature in the heating groove can be lifted out of the groove opening of the heating groove, so as to facilitate the transfer of the nut by the transfer mechanism. After the transfer mechanism transfers the nut, the ejector rod is driven to descend to the initial position by the ejector cylinder. When the ejector rod is located at the initial position, the upper surface of the ejector rod is located at the same horizontal plane as the groove bottom of the linear vibration groove.

[0056] In this embodiment, the object carrying mechanism includes a second linear slide rail 41 arranged adjacent to one side of the heating assembly in a horizontal direction, an object carrying plate 42 slidably connected with the second linear slide rail, a transverse cylinder 43 arranged below the workbench and drivingly connected with the object carrying plate, and an air cooling assembly 44 arranged on the workbench. One end of the second linear slide rail close to the heating assembly is an assembly station 45, and the other end of the second linear slide rail away from the heating assembly is a discharging station 46. The transverse cylinder can drive the object carrying plate to move between the assembly station and the discharging station. An upper surface of the object carrying plate is provided with a placing groove 421 for placing an assembly part and a limiting rod 47 arranged adjacent to the placing groove. The height of the limiting rod is equal to the height of the clamping jaw. The assembly part is preferably a plastic part shell, and the assembly part is provided with a mounting portion for mounting the nut. The mounting portion can be deformed at a preset temperature.

[0057] In the embodiment, the heating assembly comprises an external cold air source and a cooler connected with the external cold air source. The cooler is arranged between the second linear slide rail and the heating assembly and close to one side of the second linear slide rail. The side of the cooler close to the second linear slide rail is provided with a cold air outlet opposite to the placing groove and a clamping groove part capable of clamping with the loading plate. When the transverse air cylinder drives the loading plate to move the assembly station, the loading plate is clamped with the clamping groove part, and the cold air outlet blows air towards the placing groove. The transverse air cylinder and the air cooling assembly are electrically connected with the control system.

[0058] In the embodiment, the transfer mechanism comprises a moving assembly 61, a sliding assembly 62, a heat conduction assembly 63 and a clamping assembly 64 arranged on one side of the loading mechanism and the heating assembly respectively. Specifically, the moving assembly comprises a lifting air cylinder 611, a moving air cylinder, a third linear guide rail 612, a fourth linear guide rail 613 and a support plate 614. The third linear guide rail is arranged horizontally, and the length direction of the third linear guide rail is parallel to the direction from the heating assembly to the loading mechanism. The support plate is slidably connected with the third linear guide rail. The moving air cylinder is arranged below the workbench and is drivingly connected with the support plate. The fourth linear guide rail is vertically arranged on the support plate, and the lifting air cylinder is vertically arranged on the top of the support plate. The moving air cylinder and the lifting air cylinder are electrically connected with the control system respectively.

[0059] In the embodiment, the heat conduction assembly comprises a mounting plate 631, a heat conduction rod 632, a second heating rod 633 and a second temperature sensor. The mounting plate is slidably connected with the fourth linear guide rail, and the movable end of the lifting air cylinder is connected with the mounting plate. The number of the heat conduction rods is two. The two heat conduction rods are arranged vertically on the lower surface of the mounting plate side by side, and the spacing between the two heat conduction rods is equal to the spacing between the two heating grooves. The heat conduction rod has a hollow structure, and the second heating rod and the second temperature sensor are respectively embedded in the hollow cavity of the heat conduction rod. The heat conduction rod, the second heating rod and the second temperature sensor are electrically connected with the control system respectively.

[0060] The sliding assembly comprises a sliding rod 621, a spring 622 and a connecting plate 623. The connecting plate is in sliding connection with the fourth linear guide rail and is located below the mounting plate. The clamping assembly is arranged on the lower surface of the connecting plate and is located above the heating assembly and the object carrying mechanism. One end of the sliding rod is fixedly connected with the lower surface of the mounting plate. The other end of the sliding rod penetrates through the connecting plate and is in sliding connection with the connecting plate. The spring is sleeved outside the sliding rod, and the two ends of the spring are connected with the mounting plate and the connecting plate respectively. The clamping assembly comprises two clamping jaws 641 arranged side by side on the lower surface of the connecting plate, and the two clamping jaws are located on the same vertical axis with the two heat conducting rods respectively. The clamping jaw comprises a conical clamping space formed by two elastic sheets. The end of the heat conducting rod away from the mounting plate penetrates through the connecting plate and is movably embedded in the clamping space of the clamping jaw.

[0061] Working principle:

[0062] 1. Device starts: In the initial state, the object carrying plate is located on the feeding station and is in the state of waiting for placing the assembled parts. The lifting cylinder is in the retracted state and drives the clamping jaw to be located directly above the heating groove. The infrared sensor in the linear vibration groove senses whether there is a nut waiting to be conveyed. If there is no material in the linear vibration groove, the vibration disc and the linear vibration device are started to start conveying the nut until the nuts are arranged in order in the linear vibration groove. At the same time, the first heating rod and the second heating rod are both in the open state. When the heating block and the heat conducting rod are detected to reach the preset temperature, the preparation work is completed.

[0063] 2、clamping process: the plastic assembly parts are placed into the placing groove of the loading plate, the starting switch is pressed, the device is started, the loading plate moves to the assembly station under the drive of the transverse cylinder; at the same time, the lifting cylinder drives the sliding assembly, the heat conduction assembly and the clamping assembly to move downward along the vertical direction, during the downward movement, when the connecting plate contacts with the cylinder bottom plate, the clamping jaw is coaxial with the heating block notch and the clamping jaw contacts with the upper surface of the heating block, the clamping jaw on the connecting plate is limited to move downward by the cylinder bottom plate, at this time, the lifting cylinder continuously drives the heat conduction assembly to move downward, the spring between the mounting plate and the connecting plate is continuously compressed, the heat conduction rod thus passes through the clamping space to the outside of the clamping jaw and continuously extends into the heating groove, the lower end of the heat conduction rod enters the heating groove until the heat conduction rod is inserted into the screw hole of the nut, and then the downward movement is ended; then the lifting cylinder starts to rise and drives the heat conduction rod to rise, the top rod rises synchronously with the heat conduction rod under the action of the top rod cylinder, and after the top rod rises, it can block the opening of the heating groove, so as to limit the nut in the linear vibrating screen to be conveyed to the heating groove; before the heat conduction assembly rises to the initial position, the connecting plate continuously contacts with the cylinder bottom plate under the action of the restoring force of the spring, during this period, the top rod and the heat conduction rod rise synchronously until the nut is conveyed into the clamping space of the clamping jaw; finally, when the lifting cylinder moves to the initial position, the nut is in a stable clamping state in the clamping space of the clamping jaw, and the nut is continuously heated to keep at a preset temperature under the action of the heat conduction rod;

[0064] 3、assembly process, the loading plate loaded with the plastic assembly parts moves to the assembly station, the clamping assembly clamping the nut moves to the assembly station along the third linear guide rail under the action of the moving cylinder and is located above the loading plate; the lifting cylinder drives the sliding assembly, the heat conduction assembly and the clamping assembly to move downward along the vertical direction, during the downward movement, when the connecting plate contacts with the limiting rod, the clamping jaw is coaxial with the center of the mounting part of the plastic assembly part, the clamping jaw on the connecting plate is limited to move downward by the limiting rod, at this time, the lifting cylinder continuously drives the heat conduction assembly to move downward, the spring between the mounting plate and the connecting plate is continuously compressed, the heat conduction rod thus passes through the clamping space to the outside of the clamping jaw, at this time, the nut and the heat conduction rod are still in the inserted state, the heat conduction rod presses the nut on the mounting part of the plastic assembly part, the mounting part is heated and deformed under the contact with the nut and the heat conduction rod, so that the heat conduction rod can move into the mounting hole of the mounting part with the nut, at the same time, the air cooling assembly starts to release the cold air flow with high flow rate to the surface of the mounting part, the heating rod and the nut, carries away a large amount of heat of the end of the heat conduction rod and the copper nut and the product assembly area, makes the area just melted and deformed by the heat of the nut quickly solidify, and the nut is fastened in advance before the nut cools down by itself, the nut is fastened and clamped in the mounting part, the lifting cylinder rises and pulls out the heat conduction rod from the screw hole of the nut, thereby completing the whole assembly process between the nut and the assembly part.

[0065] After the air cooling is finished, the lifting cylinder starts to rise, and the sliding assembly, the heat conduction assembly and the clamping assembly rise together to return to the initial position.

[0066] Please refer to ​ The automatic feeding hot riveting method is applied to the automatic feeding hot riveting assembly device, and includes the following steps.

[0067] Step S1: placing the nut to be heated into the heating assembly and heating to a preset temperature;

[0068] Specifically, before step S1, the following steps are further included:

[0069] The nut to be heated is placed into the vibrating disc, and the nuts in the vibrating disc are orderly arranged and transferred to the heating block of the heating assembly through the linear vibrating screen and placed in the heating groove of the heating block; at the same time, the assembly part is placed on the loading plate of the transfer mechanism at the feeding station;

[0070] Step S2: controlling the transfer mechanism to transfer the nut heated to the preset temperature to the mounting part of the assembly part, and keeping the nut at the preset temperature by heating the nut during the transfer of the transfer mechanism;

[0071] Step 3: after the nut transferred to the assembly part is pressed into the mounting part, cold air is applied to the surface of the nut and the mounting part. Specifically, when the nut in the heating groove is heated to the preset temperature, the transfer mechanism is controlled to move to make the clamping jaw assembly located directly above the heating groove, and the heat conduction rod is controlled to extend into the heating groove to transfer the nut to the clamping jaw of the clamping assembly. The heat conduction rod conducts heat to the nut in the clamping jaw to keep the nut within the preset temperature range during the transfer. The transfer mechanism transfers the nut to the assembly station, and the nut in the clamping jaw is pressed into the mounting part of the assembly part by the heat conduction rod at the assembly station. The mounting part is deformed by heat, and then the nut can be smoothly pressed into the deformed space of the mounting part. After the nut is assembled into the mounting part, the air cooling assembly is started to release a cold air flow with a high flow rate to the surface of the mounting part, the heat rod and the nut, so as to take away a large amount of heat from the end of the heat conduction rod, the copper nut and the product assembly area. The area that has just been melted and deformed by the heat of the nut is quickly solidified, and the nut is fastened in advance before it cools down by itself. The nut is fastened and clamped in the mounting part.

[0072] In summary, the automatic feeding hot riveting assembly device and the hot riveting method provided by the present application can continuously heat the nut by the transfer mechanism to keep it at a stable temperature, thereby avoiding heat loss of the nut during the transfer process, ensuring that the nut has a temperature suitable for the assembly part during assembly, improving the assembly effect of the nut, reducing the probability of damage to the assembly part, and improving the success rate and assembly efficiency of the assembly between the nut and the assembly part.

[0073] The above merely illustrates the embodiments of the present application, and is not intended to limit the patent scope of the present application. Any equivalent variation or direct or indirect application in the related technical field made according to the content of the present application specification and drawings shall be included in the patent protection scope of the present application.

Claims

1. An automatic feeding hot riveting assembly device, comprising a transfer mechanism, a heating component for heating a nut to a preset temperature, and a loading mechanism for placing an assembly, wherein the assembly is provided with a mounting portion capable of deforming at the preset temperature, characterized in that, The transfer mechanism is used to transfer the nut inside the heating assembly to the mounting part of the assembly and to maintain the nut at a preset temperature during the transfer process; The transfer mechanism includes a heat-conducting component and a clamping component; the clamping component includes a jaw formed by two or more spring pieces, and the heat-conducting component includes a heat-conducting rod disposed within the clamping space of the jaw and moving along the center line of the jaw, the heat-conducting rod being adapted to the threaded hole of the nut; The heat-conducting rod has a hollow structure, and a heating rod and a temperature sensor in contact with the heating rod are embedded inside the heat-conducting rod; The heating assembly includes a heating block and a push rod; the heating block is provided with a heating groove that is adapted to the nut, and the push rod is movably embedded in the heating groove and can move along the groove opening direction; The heating component and the loading mechanism are arranged adjacent to each other along a horizontal direction and are both located below the clamping component; The transfer mechanism further includes a movable component that can move in both the horizontal and vertical directions. The heat-conducting component is connected to the movable end of the movable component. The clamping component is disposed below the heat-conducting component and is slidably connected to the heat-conducting component in the vertical direction via a sliding component. The sliding assembly includes a slide rod connected to the heat-conducting assembly and the clamping assembly respectively, and a spring sleeved on the slide rod, with both ends of the spring connected to the heat-conducting assembly and the clamping assembly respectively. The heating assembly further includes a vertically arranged cylinder base plate, and the clamping assembly includes a connecting plate slidably connected to the slide rod. The clamping claw is disposed on the lower surface of the connecting plate. When the clamping claw is coaxial with the opening of the heating groove and the clamping claw is in contact with the upper surface of the heating block, the clamping assembly is in contact with the cylinder base plate.

2. The automatic feeding hot riveting assembly device according to claim 1, characterized in that, The loading mechanism is provided with a placement slot for placing the assembly and a limiting rod arranged adjacent to the placement slot. The height of the limiting rod is equal to the height of the gripper.

3. The automatic feeding hot riveting assembly device according to claim 2, characterized in that, The loading mechanism is equipped with a wind-cooling component, and the air outlet of the wind-cooling component is oriented towards the placement slot.

4. An automatic feeding hot riveting method, employing the automatic feeding hot riveting assembly device as described in any one of claims 1-3, characterized in that, Includes the following steps: Step S1: Place the nut to be heated into the heating assembly and heat it to the preset temperature; Step S2: Transfer the nut heated to the preset temperature to the assembly. During the transfer process, keep the nut warm within the preset temperature range by heating. Step 3: After pressing the nut transferred to the assembly into the mounting part, apply cold air to the surface of the nut and the mounting part.

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