A riveting and pressing device for metal parts and an assembly method

Abstract

An embodiment of the present application provides a metal part riveting and pressing device and an assembly method, which relates to the technical field of mechanical equipment manufacturing. The metal part riveting and pressing device includes a riveting tooling, a pressing tooling, and a workbench; the riveting tooling is installed above the workbench and includes a riveting lower die and a riveting upper die that can be mutually closed. The riveting lower die can move back and forth along a conveying mechanism. The riveting lower die includes a metal sheet positioning seat for installing a metal sheet and a housing positioning mechanism for installing a housing. The riveting upper die is installed on a riveting and pressing mechanism. The metal part is arranged in front of the housing. When the riveting lower die and the riveting upper die are closed, the metal part and the housing are riveted; the pressing tooling is installed below the workbench and includes a pressing block. The pressing block can contact the metal sheet positioning seat and press the metal sheet into the housing. The metal part riveting and pressing device can achieve the technical effects of ensuring the assembly quality and improving the production efficiency at the same time.

Description

Technical Field

[0001] The present application relates to the technical field of mechanical equipment manufacturing, and in particular, to a metal part riveting and pressing device and an assembly method thereof. Background Art

[0002] At present, with the booming development of the automotive industry, customers have increasingly strict requirements for the product quality of automotive lamps, and at the same time, it is necessary to improve production efficiency to meet market requirements. There are the following problems in the assembly process of the front reading lamp of the car for metal parts: 1) The processes are too scattered, the production cycle is long, and 2 sets of equipment are used to complete, occupying a large area; 2) There is a risk of missing installation and improper assembly of the process parts, and defective products are likely to appear. Due to the quality risks and high costs of the original traditional assembly method, it has no market competitiveness, so the original traditional assembly method no longer meets the requirements of modern lean production. Summary of the Invention

[0003] The purpose of the embodiments of the present application is to provide a metal part riveting and pressing device and an assembly method thereof, which can achieve the technical effects of ensuring assembly quality and improving production efficiency at the same time.

[0004] In a first aspect, the embodiments of the present application provide a metal part riveting and pressing device, including a riveting tooling, a pressing tooling and a workbench; the riveting tooling is installed above the workbench and includes a riveting lower die and a riveting upper die that can be closed together. The riveting lower die can move back and forth along the conveying mechanism. The riveting lower die includes a metal sheet positioning seat for installing a metal sheet and a housing positioning mechanism for installing a housing. The riveting upper die is installed on a riveting mechanism. The metal part is arranged in front of the housing. When the riveting lower die and the riveting upper die are closed together, the metal part and the housing are riveted; the pressing tooling is installed below the workbench and includes a pressing block. The pressing block can contact the metal sheet positioning seat and press the metal sheet into the housing.

[0005] In the above implementation process, the metal part riveting and pressing device combines the riveting of the metal part and the pressing of the metal sheet into one process, thus streamlining the overall equipment. At the same time, the riveting lower die is installed on the conveying mechanism above the workbench and can move back and forth. The pressing tooling is installed below the workbench. The riveting lower die and the pressing tooling are separated, which can reduce the size and volume of the moving riveting lower die. Therefore, the metal part riveting and pressing device streamlines the assembly process and achieves the technical effects of ensuring assembly quality and improving production efficiency at the same time.

[0006] Further, the riveting lower die further includes a lower die mounting plate and a guide sleeve;

[0007] The lower die mounting plate is used to install the metal sheet positioning seat and the housing positioning mechanism;

[0008] The guide sleeve is arranged on the lower die mounting plate and is used for positioning the riveting upper die and the riveting lower die for mutual mold closing.

[0009] In the above implementation process, the lower die mounting plate can be used to install other components of the riveted lower die, integrating other components of the riveted lower die together. The guide sleeve cooperates with the guide column of the riveted upper die to enable the riveted lower die and the riveted upper die to be accurately positioned, thereby ensuring assembly quality.

[0010] Furthermore, the riveting lower die also includes a clamping mechanism, which is mounted on the lower die mounting plate and arranged around the shell positioning mechanism for clamping the shell.

[0011] In the above implementation process, the clamping mechanism can clamp and fix the shell during the process of riveting the metal sheet and the shell to prevent the shell from shifting or shaking, thereby ensuring the quality of parts assembly.

[0012] Furthermore, the riveting lower die also includes a first sensing mechanism and a second sensing mechanism;

[0013] The first sensor mechanism is installed on the lower die mounting plate and is disposed at the edge of the lower die mounting plate, and is used to detect the metal sheet, the housing or the metal part;

[0014] The second sensing mechanism is arranged beside the clamping mechanism and is used to detect the position of the shell placed on the shell positioning mechanism.

[0015] In the above implementation process, the first sensor mechanism can detect the presence of metal parts, identify the shell version, and detect the presence of metal parts to prevent parts from being missed or wrongly installed during the parts assembly process; the second sensor mechanism can detect whether the shell is placed in place; thus, through the first sensor mechanism and the second sensor mechanism, the assembly quality can be guaranteed, the impact of human factors on product quality can be reduced, the outflow of defective products can be prevented, and the defective rate can be reduced.

[0016] Furthermore, the riveting upper die includes a metal part pressure plate and a shell pressure plate, the metal part pressure plate and the shell pressure plate are respectively opposite to the metal sheet positioning seat and the shell positioning mechanism, the shell pressure plate contacts the shell to press the shell, and the metal part pressure plate contacts the metal part to press the metal part.

[0017] In the above implementation process, the shell pressure plate contacts the shell to press the shell, and the metal part pressure plate contacts the metal part to press the metal part, thereby preventing the shell and the metal part from being misaligned or shifted during the riveting process of the shell and the metal part, so that the shell and the metal part can be accurately riveted to improve the assembly quality.

[0018] Furthermore, the upper riveting die further includes an upper die mounting plate and guide pillars;

[0019] The upper die mounting plate is used for mounting the metal part pressing plate and the housing pressing plate;

[0020] The guide pillars are arranged on the upper die mounting plate and are used for positioning when the upper riveting die and the lower riveting die are closed.

[0021] In the above implementation process, the upper die mounting plate can mount other components of the upper riveting die, integrating other components of the upper riveting die together. The cooperation between the guide pillars and the guide sleeves of the lower riveting die can enable the upper riveting die and the lower riveting die to achieve precise positioning, thus ensuring the assembly quality.

[0022] Furthermore, the upper riveting die further includes limit posts, which are installed on the upper die mounting plate and are used for limiting when the upper riveting die and the lower riveting die come into contact.

[0023] In the above implementation process, the limit posts on the upper riveting die come into contact with the lower riveting die, thereby limiting during the process of the upper riveting die and the lower riveting die approaching each other to protect the housing from being crushed.

[0024] Furthermore, the press-fitting tooling further includes a bottom plate and positioning pins;

[0025] The bottom plate is used for mounting the pressing block;

[0026] The positioning pins are arranged on the bottom plate and are used for positioning the press-fitting tooling.

[0027] In the above implementation process, the bottom plate is used for mounting other components of the press-fitting tooling, integrating other components of the press-fitting tooling together; during the installation of the press-fitting tooling, it is positioned well through the bottom plate and the positioning pins, thus ensuring the positioning accuracy of the press-fitting tooling in the metal part riveting and press-fitting device.

[0028] Furthermore, the press-fitting tooling further includes a proximity switch, which is arranged below the bottom plate and is used for sensing whether the metal sheet and the housing are press-fitted in place.

[0029] In the above implementation process, under the action of the air cylinder, after the lower riveting die is conveyed to the riveting and pressing area through the conveying mechanism, when the proximity switch senses that the conveying mechanism is in place, the air cylinder locks the track, thereby positioning the conveying mechanism well.

[0030] Furthermore, the press-fitting tooling further includes the protective cover, which is arranged below the bottom plate and wraps the proximity switch.

[0031] In the above implementation process, the protective cover can wrap the proximity switch, thereby protecting the proximity switch from external forces or damage, and improving the operation stability of the press-fitting tooling.

[0032] Further, the device further includes a control system, and the control system is respectively connected to the riveting tooling and the press-fitting tooling for controlling the operations of the riveting tooling and the press-fitting tooling.

[0033] Further, the device further includes a gas circuit system, and the gas circuit system is respectively connected to the riveting tooling and the press-fitting tooling for driving the operations of the riveting tooling and the press-fitting tooling.

[0034] Further, the device further includes a display screen, and the display screen is connected to the control system for displaying the operation states of the riveting tooling and the press-fitting tooling.

[0035] In a second aspect, an embodiment of the present application provides a method for riveting and press-fitting assembly of metal parts, which is applied to the metal part riveting and press-fitting device described in any one of the above, and the method includes:

[0036] Place the metal sheet into the metal sheet positioning seat and detect the presence or absence of the metal sheet;

[0037] Place the housing into the housing positioning mechanism and detect whether the housing is placed in place;

[0038] Clamp the housing and install at least one of the metal parts into the housing respectively;

[0039] The upper riveting die moves down to be aligned with the lower riveting die, and the metal part and the housing are riveted;

[0040] The pressing block contacts the metal sheet positioning seat and presses the metal sheet into the housing.

[0041] Further, after clamping the housing and installing at least one of the metal parts into the housing respectively, the method further includes:

[0042] Detect the presence or absence of the metal part and identify the version model of the housing;

[0043] After riveting the metal part and the housing, the method further includes:

[0044] Detect whether the metal part is riveted in place;

[0045] After pressing the metal sheet into the housing, the method further includes:

[0046] Detect whether the metal sheet is press-fitted in place.

[0047] Other features and advantages of the present disclosure will be set forth in the following description, or can be inferred or determined without doubt from the description, or can be learned by implementing the above technologies of the present disclosure.

[0048] To make the above objects, features, and advantages of the present application more obvious and understandable, the following specifically enumerates preferred embodiments and, in conjunction with the accompanying drawings, makes a detailed description as follows. Description of the Drawings

[0049] To more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required to be used in the embodiments of the present application. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0050] Figure 1 A schematic structural diagram of riveting and press-fitting of a metal part provided for an embodiment of the present application;

[0051] Figure 2 A schematic structural diagram of a riveting tooling provided for an embodiment of the present application;

[0052] Figure 3 A schematic structural diagram of a riveting lower die provided for an embodiment of the present application;

[0053] Figure 4 A schematic structural diagram of a metal sheet positioning seat provided for an embodiment of the present application;

[0054] Figure 5 A schematic structural diagram of a riveting upper die provided for an embodiment of the present application;

[0055] Figure 6a An enlarged partial structural diagram of a riveting upper die provided for an embodiment of the present application;

[0056] Figure 6b An enlarged partial cross-sectional view of a riveting upper die provided for an embodiment of the present application;

[0057] Figure 7 A schematic structural diagram of a press-fitting tooling provided for an embodiment of the present application;

[0058] Figure 8 Another schematic structural diagram of a press-fitting tooling provided for an embodiment of the present application;

[0059] Figure 9 A schematic structural diagram of a riveting and pressing mechanism provided for an embodiment of the present application;

[0060] Figure 10 Schematic flowchart of a metal part riveting and press-fitting assembly method provided by an embodiment of this application. Detailed implementation manners

[0061] Next, the technical solutions in the embodiments of this application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Components of the embodiments of this application usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative efforts fall within the scope of protection of this application.

[0062] In this application, terms such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly used to better describe this application and its embodiments, and are not used to limit that the indicated device, element or component must have a specific orientation, or be constructed and operated in a specific orientation.

[0063] Moreover, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0064] In addition, terms such as "install", "set", "provided with", "connect", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or a point connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0065] In addition, terms such as "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, the meaning of "a plurality" is two or more.

[0066] The embodiments of the present application provide a metal part riveting and pressing device and an assembly method, which can be applied to the assembly process of automotive lamps. This metal part riveting and pressing device combines the riveting of metal parts and the pressing of metal sheets into one process, thus streamlining the overall equipment. At the same time, the riveting lower die is installed on the conveyor mechanism above the workbench and can move back and forth. The pressing tooling is installed below the workbench, and the riveting lower die and the pressing tooling are separated, which can reduce the size and volume of the moving riveting lower die. Therefore, this metal part riveting and pressing device streamlines the assembly process, achieves the technical effect of ensuring assembly quality and improving production efficiency at the same time.

[0067] Please refer to Figure 1 and Figure 2 , in which Figure 1 is a schematic structural diagram of a metal part riveting and pressing provided by the embodiments of the present application, Figure 2 is a schematic structural diagram of a riveting tooling provided by the embodiments of the present application. This metal part riveting and pressing device includes a riveting tooling 100, a pressing tooling 200, a workbench 300, a control system 400, a gas circuit system 500, and a display screen 600.

[0068] Exemplarily, the riveting tooling 100 is installed above the workbench 300 and includes a riveting lower die 110 and a riveting upper die 120 that can be closed. The riveting lower die 110 can move back and forth along the conveyor mechanism. The riveting lower die 110 includes a metal sheet positioning seat 111 for installing the metal sheet and a housing positioning mechanism 112 for installing the housing. The riveting upper die 120 is installed on the riveting mechanism. The metal part is arranged in front of the housing. When the riveting lower die 110 and the riveting upper die 120 are closed, the metal part and the housing are riveted.

[0069] Exemplarily, the pressing tooling 200 is installed below the workbench 300 and includes a pressing block 210. The pressing block 210 can contact the metal sheet positioning seat 111 and press the metal sheet into the housing.

[0070] In some embodiments, the conveyor mechanism is a linear conveyor mechanism, which provides the riveting lower die 110 to move back and forth along the conveyor mechanism.

[0071] In some embodiments, this metal part riveting and pressing device is applied to the assembly process of automotive lamps, where the metal sheet is a grounding copper sheet.

[0072] Exemplarily, the control system 400 is respectively connected to the riveting tooling 100 and the pressing tooling 200, and is used to control the operation of the riveting tooling 100 and the pressing tooling 200.

[0073] In some embodiments, the control system 400 is a PLC control system.

[0074] Exemplarily, the air circuit system 500 is respectively connected to the riveting tooling 100 and the pressing tooling 200, and is used to drive the operation of the riveting tooling 100 and the pressing tooling 200.

[0075] Exemplarily, the display screen 600 is connected to the control system 400, and is used to display the operating states of the riveting tooling 100 and the pressing tooling 200.

[0076] Exemplarily, the riveting tooling 100, the pressing tooling 200, the control system 400, the air circuit system 500, and the display screen 600 are installed on the workbench 300.

[0077] In some implementation scenarios, the metal part riveting and pressing device combines the riveting of metal parts and the pressing of metal sheets into one process, thus streamlining the overall equipment. At the same time, the riveting lower die 110 is installed on the conveying mechanism above the workbench 300 and can move back and forth. The pressing tooling 200 is installed below the workbench 300. The riveting lower die 110 and the pressing tooling 200 are separated, which can reduce the size and volume of the moving riveting lower die 110. Thus, the metal part riveting and pressing device streamlines the assembly process, realizes the technical effect of ensuring the assembly quality, and improving the production efficiency at the same time.

[0078] Please refer to Figure 3 , Figure 3 FIG. is a schematic structural diagram of a riveting lower die provided by an embodiment of the present application. The riveting lower die 110 includes a metal sheet positioning seat 111, a housing positioning mechanism 112, a lower die mounting plate 113, a guide sleeve 114, a clamping mechanism 115, a first sensing mechanism 116, and a second sensing mechanism 117.

[0079] Exemplarily, the lower die mounting plate 113 is used to mount the metal sheet positioning seat 111 and the housing positioning mechanism 112.

[0080] Exemplarily, the guide sleeve 114 is arranged on the lower die mounting plate 113 and is used for positioning the mutual die closing of the riveting upper die 120 and the riveting lower die 110.

[0081] Exemplarily, the lower die mounting plate 113 can mount other components of the riveting lower die 110, integrate other components of the riveting lower die 110 together, and the guide sleeve 114 can achieve precise positioning of the riveting lower die 110 and the riveting upper die 120, thereby ensuring the assembly quality.

[0082] In some implementation manners, the lower die mounting plate 113 further includes a positioning sleeve 1131, which is used to realize the positioning of the lower die mounting plate 113 during the installation process.

[0083] Exemplarily, the clamping mechanism 115 is installed on the lower die mounting plate 113 and is arranged around the housing positioning mechanism 112, and is used to clamp the housing.

[0084] Exemplarily, during the process of riveting the metal sheet and the housing, the clamping mechanism 115 can clamp and fix the housing to prevent the housing from shifting or shaking, thereby ensuring the quality of part assembly.

[0085] In some embodiments, the riveting lower die further includes a clamping cylinder 1151, and the clamping cylinder 1151 is used to push the clamping block.

[0086] Exemplarily, the first sensing mechanism 116 is installed on the lower die mounting plate 113, is disposed at the edge position of the lower die mounting plate 113, and is used to detect the metal sheet, the housing or the metal part; the second sensing mechanism 117 is disposed beside the clamping mechanism 115 and is used to detect the position where the housing is placed on the housing positioning mechanism 112.

[0087] Exemplarily, the first sensing mechanism 116 can detect the presence or absence of the metal sheet, identify the housing version, and detect the presence or absence of the metal part, preventing situations such as missing installation or misinstallation of parts during the part assembly process; the second sensing mechanism 117 can detect whether the housing is placed in place; thus, through the first sensing mechanism 116 and the second sensing mechanism 117, the assembly quality can be ensured, the influence of human factors on the product quality can be reduced, the outflow of defective products can be prevented, and further the defective rate can be reduced.

[0088] In some embodiments, the first sensing mechanism 116 is a laser sensor; the second sensing mechanism 117 can be an optical fiber sensor.

[0089] Please refer to Figure 4 , Figure 4 , which is a schematic structural diagram of a metal sheet positioning seat provided by an embodiment of the present application. The metal sheet positioning seat 111 includes a spring 1111.

[0090] Exemplarily, the spring 1111 inside the metal sheet positioning seat 111 is compressed, and the metal sheet positioning seat 111 moves upward under the pushing force of the sliding table cylinder 240 to press the metal sheet into the housing.

[0091] Please refer to Figure 5 , Figure 5 , which is a schematic structural diagram of a riveting upper die provided by an embodiment of the present application. The riveting upper die 120 includes a metal part pressing plate 121, a housing pressing plate 122, an upper die mounting plate 123, a guide post 124, a limit post 125, an anti-misalignment post 126, and a fixing plate 127.

[0092] Exemplarily, the metal part pressing plate 121 and the housing pressing plate 122 are respectively opposite to the positions of the metal sheet positioning seat 111 and the housing positioning mechanism 112. The housing pressing plate 122 contacts the housing to press the housing, and the metal part pressing plate 121 contacts the metal part to press the metal part.

[0093] Exemplarily, the housing pressing plate 122 contacts the housing to press the housing, and the metal part pressing plate 121 contacts the metal part to press the metal part. Thus, during the riveting process of the housing and the metal part, the situation that the housing and the metal part are displaced or shifted is prevented, so that the housing and the metal part can be accurately riveted, improving the assembly quality.

[0094] Exemplarily, the upper die mounting plate 123 is used to mount the metal part pressing plate 121 and the housing pressing plate 122; the guide post 124 is arranged on the upper die mounting plate 123 and is used for positioning when the upper die 120 and the lower die 110 for riveting are closed.

[0095] Exemplarily, the upper die mounting plate 123 can mount various other components of the upper die 120 for riveting, integrating various other components of the upper die 120 for riveting together. The guide post 124 can accurately position the upper die 120 for riveting and the lower die 110 for riveting, thereby ensuring the assembly quality.

[0096] In some embodiments, during the process of closing the upper die 120 for riveting and the lower die 110 for riveting, the guide sleeve 114 and the guide post 124 can cooperate with each other and be sleeved together, thereby accurately positioning the upper die 120 for riveting and the lower die 110 for riveting.

[0097] Exemplarily, the limit post 125 is mounted on the upper die mounting plate 123 and is used for limiting when the upper die 120 for riveting and the lower die 110 for riveting are in contact.

[0098] In the above implementation process, the limit post 125 on the upper die 120 for riveting contacts the lower die 110 for riveting, thereby limiting during the process of the upper die 120 for riveting and the lower die 110 for riveting approaching each other to protect the housing from being crushed.

[0099] Exemplarily, an anti-misalignment post 126 is also provided on the upper die 120 for riveting to prevent misinstallation of the die during die installation and maintenance.

[0100] Exemplarily, a fixing plate 127 is also provided on the upper die 120 for riveting. It is mounted on the upper die mounting plate 123 and can be used to fix the metal part pressing plate 121.

[0101] Please refer to Figure 6a , Figure 6a which is a partially enlarged view of a upper die for riveting provided by an embodiment of the present application.

[0102] Exemplarily, an upper die spring 128 is arranged inside the upper die 120 for riveting, that is, inside the upper die mounting plate 123 and the fixing plate 127. Thus, during the process that the housing pressing plate 122 contacts the housing to press the housing and the metal part pressing plate 121 contacts the metal part to press the metal part, the upper die spring 128 inside the upper die 120 for riveting is compressed to provide a pressing force.

[0103] Please refer toFigure 6b , Figure 6b is a partial mechanism enlarged cross-sectional view of a riveting upper die provided by an embodiment of the present application.

[0104] Exemplarily, a riveting insert 1211 is disposed above the metal part pressing plate 121; when the housing and the metal part are riveted, the metal part is riveted through the riveting insert 1211, which can effectively ensure the riveting quality.

[0105] Please refer to Figure 7 , Figure 7 is a schematic structural diagram of a pressing tool provided by an embodiment of the present application. The pressing tool 200 includes a pressing block 210, a bottom plate 220, a positioning pin 230, a sliding table cylinder 240, a proximity switch 250, and a sensing plate 260.

[0106] Exemplarily, the bottom plate 220 is used to mount the pressing block 210; the positioning pin 230 is disposed on the bottom plate 220 and is used to position the pressing tool 200.

[0107] Exemplarily, the bottom plate 220 is used to mount other components of the pressing tool 200, integrating other components of the pressing tool 200 together; during the installation of the pressing tool 200, it is positioned well through the bottom plate 220 and the positioning pin 230, so as to ensure the positioning accuracy of the pressing tool 200 in the metal part riveting and pressing device.

[0108] In some embodiments, the positioning pin 230 is an elastic positioning pin.

[0109] Exemplarily, the proximity switch 250 is disposed below the bottom plate 220 and is used to sense the position of the pressing mechanism to detect whether the metal sheet and the housing are pressed in place; the sensing plate 260 is disposed below the bottom plate 220 and before the proximity switch 250 and is used to cooperate with the proximity switch 250 to sense the position of the pressing mechanism.

[0110] Exemplarily, the sensing plate 260 is used to cooperate with the proximity switch 250 to sense the position where the pressing mechanism is located.

[0111] Please refer to Figure 8 , Figure 8 is another schematic structural diagram of a pressing tool provided by an embodiment of the present application. The pressing tool 200 further includes a protective cover 270.

[0112] Exemplarily, the protective cover 270 is disposed below the bottom plate 220 and wraps the proximity switch 250 and the sensing plate 260.

[0113] Exemplarily, the protective cover 270 can wrap the proximity switch 250 and the induction plate 260 therein, so as to protect the proximity switch 250 and the induction plate 260 from external forces or damage, thereby improving the operating stability of the press-fitting tooling 200.

[0114] Exemplarily, with the booming development of the automotive industry, customers' requirements for the product quality of automotive lamps are becoming increasingly strict. At the same time, it is necessary to improve production efficiency to meet market requirements. There are the following problems in the assembly process of the front reading lamp of the car: 1) The processes are too scattered, the production beat is long, and 2 sets of equipment are used to complete, occupying a large area. 2) There is a risk of missing parts and improper assembly in the process parts, and defective products are likely to appear. Since the traditional assembly method in the prior art has quality risks and high costs and has no market competitiveness, the traditional assembly method no longer meets the requirements of modern lean production.

[0115] Therefore, in order to effectively control the assembly quality in production and prevent defective products from flowing into the market, and at the same time to improve production efficiency; the embodiment of the present application provides a metal part riveting and press-fitting device and its corresponding assembly method, which can rely on the first sensing mechanism 116 to detect whether parts are missing and rely on the proximity switch 250 to detect whether the metal sheet is assembled in place, and integrate one device each in the metal part riveting process and the metal sheet press-fitting process, reducing one device, ensuring product quality and reducing production costs.

[0116] Exemplarily, the metal part riveting and press-fitting device provided by the embodiment of the present application can overcome the defects of the existing production methods, and provides an integrated, quality-controllable, fast-operating, safe and reliable assembly device and its corresponding assembly method; the metal part riveting and press-fitting device can achieve: the first sensing mechanism 116 can perform the detection of the housing version; the first sensing mechanism 116 can perform the detection of missing parts; the riveting tooling 100 performs the riveting of the metal parts; the press-fitting tooling 200 performs the press-fitting of the metal sheets.

[0117] Please refer to Figure 9 , Figure 9 , which is a schematic structural diagram of a riveting and pressing mechanism provided by the embodiment of the present application. The riveting and pressing mechanism is the abbreviation of the riveting and press-fitting mechanism, and includes a workbench bottom plate 310, which is arranged in the middle of the workbench 300.

[0118] Please refer to Figure 10 , Figure 10 , which is a schematic flow chart of a metal part riveting and press-fitting assembly method provided by the embodiment of the present application, and is applied to Figure 1 the metal part riveting and press-fitting device shown in

[0119] S100, place the metal sheet into the metal sheet positioning seat and detect the presence or absence of the metal sheet;

[0120] S200, place the housing into the housing positioning mechanism and detect whether the housing is placed in place;

[0121] S300, clamp the housing and install at least one of the metal parts into the housing respectively;

[0122] S400, the upper riveting die moves down to be aligned with the lower riveting die for die closing, and rivet the metal part and the housing;

[0123] S500, the pressing block contacts the metal sheet positioning seat and press the metal sheet into the housing.

[0124] In some embodiments, after step S300, the method further includes: detecting the presence or absence of the metal part and identifying the version model of the housing;

[0125] After step S400, the method further includes: detecting whether the metal part is riveted in place;

[0126] After step S500, the method further includes: detecting whether the metal sheet is pressed in place.

[0127] Exemplarily, the process of the metal part riveting and pressing device is controlled by the control system 400. The production process information is detected by the first sensing mechanism 116, the second sensing mechanism 117 and other sensors, and logical operations are performed. After determining that the process is qualified, the next instruction is executed; in the control system 400, the PLC system outputs a control level to the solenoid valve. After the solenoid valve receives the input signal, the solenoid valve works, and the relevant air circuits in the air circuit system 500 are conducted. The cylinders and air-liquid intensifying cylinders in the air circuit system 500 act to provide driving force, and the air and electric actuating devices complete the action tasks; the PLC system performs detection and determination to define defective products and qualified products. When the PLC system completes 1 working cycle of cyclic scanning, that is, 1 set of products is produced. Otherwise, the device alarms. After the defective products are put into the defective product box manually, the device can be started.

[0128] Exemplarily, an example of the assembly method corresponding to the metal part riveting and pressing device is as follows:

[0129] Put 1 metal sheet into the metal sheet positioning seat 111, and 1 laser sensor in the first sensing mechanism 116 detects the presence of the metal sheet; put the housing into the housing positioning mechanism 112, and 2 fiber optic sensors in the second sensing mechanism 117 detect whether the housing is placed in place; 4 clamping cylinders 1151 clamp the housing, and then, install 3 metal parts into the housing respectively; 3 laser sensors in the first sensing mechanism 116 detect the presence of the metal parts, and 1 laser sensor identifies the version model of the housing.

[0130] The air cylinder pushes the conveying mechanism into the riveting area. After the proximity switch senses that the conveying mechanism is in place, the air cylinder locks the rail to position the conveying mechanism properly.

[0131] The air-liquid intensifying cylinder moves downward, and the upper riveting die 120 moves downward to mate and position properly with the lower riveting die 110; the limit post 125 on the upper riveting die 120 contacts the lower riveting die 110 to protect the shell from being crushed, the shell pressing plate contacts the shell to press the shell tightly, and the metal part pressing plate contacts the metal part to press the metal part tightly; the upper die spring 128 inside the upper riveting die 120 is compressed to provide the pressing force; among them, the action of the air-liquid intensifying cylinder has two strokes. The first stroke presses the shell tightly, and the second stroke is the hydraulic intensifying section to provide sufficient riveting force to rivet the metal part and the shell together; when the air-liquid intensifying cylinder moves to the end point at the end, the metal part is riveted in place without looseness; when the metal part is not riveted in place, the micro photoelectric sensor does not detect that the sensing piece has moved down in place, and the device outputs an alarm message.

[0132] The slide cylinder 240 on the press-fitting tooling 200 moves upward, the pressing block 210 contacts the metal sheet positioning seat 111, the spring 1111 inside the metal sheet positioning seat 111 is compressed, and the metal sheet positioning seat 111 moves upward under the pushing force of the slide cylinder 240 to press the metal sheet into the shell. The proximity switch 250 detects whether the metal sheet is press-fitted in place.

[0133] Exemplarily, a metal part riveting and press-fitting device provided by an embodiment of the present application has the following technical effects:

[0134] First, the riveting of the metal part and the press-fitting of the metal sheet are combined into one process, thus reducing one piece of equipment. Among them, the lower riveting die 110 is installed on the conveying mechanism above the workbench 300 and can move back and forth. The press-fitting tooling 200 is installed below the workbench 300 and is positioned properly through the bottom plate 220 and the positioning pin 230; the lower riveting die 110 and the press-fitting tooling 200 are separated, and the metal part positioning seat 111 and the press-fitting tooling 200 are separated, which can reduce the size and volume of the moving lower riveting die 110. The lower riveting die 110 moves above the workbench bottom plate 310 of the workbench 300 without potential safety hazards; the upper riveting die 120 is installed on the riveting mechanism;

[0135] Second, in the metal part riveting and press-fitting device, the lower riveting die 110 and the upper riveting die 120 are accurately positioned through the guide posts 124 and the guide sleeves 114. The upper die spring 128 provides the pressing force, and the metal part is pressed tightly through the metal part pressing plate 121; the metal part is riveted through the riveting insert 1211, ensuring the riveting quality;

[0136] Thirdly, the first sensing mechanism 116 and the second sensing mechanism 117 ensure the assembly quality: the laser sensors in the first sensing mechanism 116 identify the housing versions with different configurations. The presence or absence of metal sheets and metal parts is detected by the laser sensors in the first sensing mechanism 116 to prevent missing parts during the assembly process; in addition, whether the metal sheet is pressed in place is detected and determined by the proximity switch 250; thus, relying on this metal part riveting and pressing device to detect the assembly quality can effectively reduce the influence of human factors on product quality and prevent defective products from flowing out;

[0137] Fourthly, the riveting upper die 120 is provided with anti-misalignment columns 126, which can prevent misinstallation of the die during die installation and maintenance;

[0138] Fifthly, the metal part riveting and pressing device further includes an alarm mechanism. When defective product information is detected during the assembly process, the alarm mechanism alarms, the three-color light flashes, and the display screen shows the defective content, thereby reminding the operator to manually take out the defective product and put it into the defective product box.

[0139] In all embodiments of the present application, "big", "small" are relative, "many", "few" are relative, "up", "down" are relative. For the expression methods of such relative terms, the embodiments of the present application will not elaborate further.

[0140] It should be understood that the "in this embodiment", "in the embodiments of the present application" or "as an optional implementation manner" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, the "in this embodiment", "in the embodiments of the present application" or "as an optional implementation manner" that appear throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. Those skilled in the art should also know that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily essential to the present application.

[0141] In various embodiments of the present application, it should be understood that the magnitudes of the serial numbers of the above processes do not necessarily mean the inevitable sequence of execution. The execution sequence of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

[0142] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present application, and all should be covered by the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A riveting and pressing device for metal parts, characterized in that It includes a riveting tooling, a press-fitting tooling and a workbench; The riveting tooling is installed above the workbench and includes a riveting lower die and a riveting upper die that can be closed together. The riveting lower die can move back and forth along a conveying mechanism. The riveting lower die includes a metal sheet positioning seat for installing a metal sheet and a housing positioning mechanism for installing a housing. The riveting upper die is installed on a riveting press mechanism. A metal part is arranged in front of the housing. When the riveting lower die and the riveting upper die are closed together, the metal part and the housing are riveted; The press-fitting tooling is installed below the workbench and includes a pressing block. The pressing block can contact the metal sheet positioning seat to press the metal sheet into the housing; The riveting lower die further includes a lower die mounting plate and a guide sleeve; The lower die mounting plate is used for installing the metal sheet positioning seat and the housing positioning mechanism; The guide sleeve is arranged on the lower die mounting plate and is used for positioning when the riveting upper die and the riveting lower die are closed together; The riveting upper die includes a metal part pressing plate and a housing pressing plate. The metal part pressing plate and the housing pressing plate are respectively opposite to the positions of the metal sheet positioning seat and the housing positioning mechanism. The housing pressing plate contacts the housing to clamp the housing, and the metal part pressing plate contacts the metal part to clamp the metal part.

2. The metal part riveting and press-fitting device according to claim 1, characterized in that The riveting lower die further includes a clamping mechanism. The clamping mechanism is installed on the lower die mounting plate and is arranged around the housing positioning mechanism for clamping the housing; 3. The metal part riveting and press-fitting device according to claim 2, characterized in that, The riveting lower die further includes a first sensing mechanism and a second sensing mechanism; The first sensing mechanism is installed on the lower die mounting plate and is arranged at the edge position of the lower die mounting plate for detecting the metal sheet, the housing or the metal part; The second sensing mechanism is arranged beside the clamping mechanism for detecting the position where the housing is placed on the housing positioning mechanism; 4. The metal part riveting and press-fitting device according to claim 1, characterized in that, The riveting upper die further includes an upper die mounting plate and a guide post; The upper die mounting plate is used for installing the metal part pressing plate and the housing pressing plate; The guide post is arranged on the upper die mounting plate and is used for positioning when the riveting upper die and the riveting lower die are closed together; 5. The metal part riveting and press-fitting device according to claim 4, characterized in that, The riveting upper die further includes a limit post. The limit post is installed on the upper die mounting plate for limiting when the riveting upper die and the riveting lower die contact; 6. The metal part riveting and press-fitting device according to claim 1, characterized in that The press-fitting tooling further includes a bottom plate and a positioning pin; The bottom plate is used for installing the pressing block; The positioning pin is arranged on the bottom plate for positioning the press-fitting tooling; 7. The metal part riveting and press-fitting device according to claim 6, wherein The press-fitting tooling further includes a proximity switch. The proximity switch is arranged below the bottom plate for sensing whether the metal sheet and the housing are press-fitted in place; 8. The metal part riveting and press-fitting device according to claim 7, characterized in that, The press-fitting tooling further includes a protective cover, which is arranged below the bottom plate and wraps the proximity switch; 9. A riveting and press-fitting assembly method for metal parts, characterized in that, Applied to the metal part riveting and press-fitting device according to any one of claims 1 to 8, the method further includes: Placing the metal sheet into the metal sheet positioning seat and detecting the presence or absence of the metal sheet; Placing the housing into the housing positioning mechanism and detecting whether the housing is placed in place; Clamping the housing and respectively installing at least one of the metal parts into the housing; The upper riveting die moves downward to be clamped and positioned with the lower riveting die, and the metal part and the housing are riveted; The pressing block contacts the metal sheet positioning seat, and presses the metal sheet into the housing.

10. The method for riveting and press-fitting assembly of metal parts according to claim 9, characterized in that, After clamping the housing and respectively installing at least one of the metal parts into the housing, the method includes: Detecting the presence or absence of the metal part and identifying the version model of the housing; After riveting the metal part and the housing, the method further includes: Detecting whether the metal part is riveted in place; After pressing the metal sheet into the housing, the method further includes: Detecting whether the metal sheet is pressed in place.

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