Hot riveting machine for door plate

Abstract

The utility model provides a hot riveting machine for a door plank, and relates to the technical field of hot riveting machines, the hot riveting machine comprises a hot riveting machine body, a control system, a riveting mechanism, a heating system, a cooling system and a plurality of welding heads, and the control system is used for automatically controlling the riveting mechanism, the heating system and the cooling system to work cooperatively. The riveting structure is used for applying stable pressure to a connecting point, the pressure value is controlled by the control system, the heating system is used for conducting high-frequency heating on a riveting piece and can conduct real-time temperature monitoring on the riveting piece, the cooling system is used for conducting heat dissipation and cooling on a welding head, and the heating system can ensure that all parts of a rivet are evenly heated and can conduct heat dissipation and cooling on the welding head. And the heating speed is high, so that the riveting quality and strength are greatly improved, riveting points are firmer and more reliable, the defective rate caused by non-uniform heating can be reduced in industrial production, and the production cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of hot riveting machines, and particularly to a hot riveting machine for door panels. Background Art

[0002] A hot riveting machine uses an electric heating method to transfer the heat of a heating plate to a hot riveting head. The hot riveting head heats a rivet column to make it molten, and then blows air to cool and solidify it to form a riveting head for fixing products.

[0003] With the development of the manufacturing industry, the requirements for the assembly accuracy, appearance quality, and structural strength of products are getting higher and higher. As a new type of connection technology, hot riveting welding has the characteristics of being able to achieve reliable connection between different materials, having a small heat-affected zone, and high connection strength, and has attracted more and more attention.

[0004] However, there are indeed a series of problems in the actual application of existing hot riveting welding machines, which to a great extent affect their wide application in industrial production.

[0005] First of all, the problem of uneven heating is relatively prominent. When the current hot riveting welding machine heats a rivet, due to the inability to perform real-time temperature monitoring on the heating component, there will be a large difference in the heating degree of different parts of the rivet. This uneven heating will cause the rivet to be over-softened or under-softened locally during the riveting process, thus seriously affecting the quality and strength of the riveting.

[0006] Secondly, unstable riveting pressure is also a difficult problem to be solved urgently. When the existing hot riveting welding machine applies riveting pressure, due to the instability of the pressure control system, the riveting pressure fluctuates. The unstable riveting pressure will cause the combination between the rivet and the connected material to be not tight, and even may appear loose or falling off, greatly reducing the reliability of the product.

[0007] In addition, complex operation is also a shortcoming of the hot riveting welding machine. The current hot riveting welding machine often requires operators to have high professional skills and rich experience to correctly set parameters and operate. The complex operation process not only increases the training cost and time of the operators, but also easily affects the riveting quality due to human operation errors.

[0008] Therefore, we propose a hot riveting machine for door panels. Summary of the Invention

[0009] The purpose of the present invention is to solve the disadvantages existing in the prior art. There are still some problems in the actual application of existing hot riveting welding machines, such as uneven heating, unstable riveting pressure, complex operation, etc., which affect their wide application in industrial production.

[0010] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0011] A hot riveting machine for door panels

[0012] It includes a hot riveting machine body, a control system, a riveting mechanism, a heating system, a cooling system, and several welding heads

[0013] The control system is used to automatically control the coordinated operation of the riveting mechanism, the heating system, and the cooling system

[0014] The riveting structure is used to apply stable pressure to the connection point, and its pressure value is controlled by the control system

[0015] The heating system is used to perform high-frequency heating on the riveted parts and can monitor the real-time temperature of the riveted parts

[0016] The cooling system is used to dissipate heat and cool the welding heads

[0017] As a preferred solution of the present invention, several of the welding heads are installed inside the hot riveting machine body, and several of the welding heads are used to weld the riveted parts

[0018] As a preferred solution of the present invention, the cooling system includes a copper pipe blowing pipeline, and the copper pipe blowing pipeline is used in cooperation with the welding heads

[0019] As a preferred solution of the present invention, several pre-pressing mechanisms are further provided inside the hot riveting machine body. The several pre-pressing mechanisms are used to assist in fixing during riveting by the riveting mechanism. The pre-pressing mechanism includes a pre-pressing rod, a buffer spring is provided at the bottom of the pre-pressing rod, a pressing block is provided at the bottom of the buffer spring, and a rubber protection pad is provided at the bottom of the pressing block

[0020] As a preferred solution of the present invention, the control system includes a PLC controller, and welding programs and fault diagnosis programs are built into the PLC controller

[0021] As a preferred solution of the present invention, the heating system includes an induction coil and a temperature sensor. The induction coil is used to quickly heat the riveted parts, and the temperature sensor is in direct contact with the surface of the riveted parts

[0022] As a preferred solution of the present invention, the riveting mechanism includes a servo motor and a riveting die. The servo motor is used to drive the riveting die to move

[0023] Compared with the prior art, the beneficial effects of the present invention are

[0024] In the present invention, the heating system can ensure that all parts of the rivet are evenly heated, and the heating speed is fast. This will greatly improve the riveting quality and strength, make the riveting points more firm and reliable. In industrial production, it can reduce the defective rate caused by uneven heating and reduce production costs

[0025] This riveting mechanism is controlled by a high-precision servo motor, which can provide stable and precisely adjustable pressure. This makes the connection between the rivet and the connected material tighter, effectively avoiding loosening or falling off, improving the reliability of the product. The stable riveting pressure can also ensure the quality consistency of products in different batches, establishing a good brand image for the enterprise.

[0026] This control system adopts an advanced PLC controller. Multiple preset welding programs are stored inside the PLC controller. For different material combinations (such as metal-metal, metal-plastic) and door panel structures (such as flat doors, door panels with stiffeners), operators can quickly select the appropriate welding program through the touch screen interface, greatly improving work efficiency. Description of the Drawings

[0027] Figure 1 It is a schematic diagram of the main structure of a hot riveting machine for door panels provided by the present invention;

[0028] Figure 2 It is a schematic diagram of the main structure of the preloading mechanism of a hot riveting machine for door panels provided by the present invention;

[0029] Figure 3 It is a schematic diagram of the welding head of a hot riveting machine for door panels provided by the present invention;

[0030] Figure 4 It is a system block diagram of a hot riveting machine for door panels provided by the present invention.

[0031] Legend: 1. Hot riveting machine body; 2. Preloading rod; 3. Buffer spring; 4. Pressing block; 5. Rubber protection pad; 6. Welding head. Detailed Embodiments

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0033] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant content. Several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0034] It should be noted that when an element is referred to as "fixedly provided on" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are only for the purpose of illustration.

[0035] Unless otherwise defined, all technical and scientific terms used in this article have the same meaning as commonly understood by those skilled in the technical field to which this invention belongs. The terms used in the specification of this invention are only for the purpose of describing specific embodiments and are not intended to limit this invention. The term "and / or" used in this article includes any and all combinations of one or more of the related listed items.

[0036] Embodiment

[0037] As Figures 1-4 As shown, the present invention provides a technical solution: a hot riveting machine for a door panel, including a hot riveting machine body 1, a control system, a riveting mechanism, a heating system, a cooling system and a plurality of welding heads 6. The control system is used to automatically control the coordinated work of the riveting mechanism, the heating system and the cooling system. The riveting structure is used to apply a stable pressure to the connection point, and its pressure value is controlled by the control system. The heating system is used to perform high-frequency heating on the riveting parts and can monitor the real-time temperature of the riveting parts. The cooling system is used to dissipate heat and cool the welding heads 6.

[0038] The effect it brings is that this heating system can ensure that all parts of the rivet are evenly heated and the heating speed is fast, which will greatly improve the riveting quality and strength, make the riveting point more firm and reliable. In industrial production, it can reduce the defective rate caused by uneven heating and lower the production cost.

[0039] This riveting mechanism is controlled by a high-precision servo motor. The servo motor can provide a stable and precisely adjustable pressure, which makes the combination between the rivet and the connected material closer, effectively avoiding the occurrence of loosening or falling off phenomena, improving the reliability of the product. The stable riveting pressure can also ensure the quality consistency of products in different batches and establish a good brand image for the enterprise.

[0040] This control system adopts an advanced PLC controller. The PLC controller stores multiple preset welding programs internally. For different material combinations (such as metal-metal, metal-plastic) and door panel structures (such as flat doors, door panels with reinforcing ribs), operators can quickly select the appropriate welding program through the touch screen interface, greatly improving the work efficiency.

[0041] A number of welding heads 6 are installed inside the hot riveting machine body 1, and the number of welding heads 6 is used to weld the riveted parts.

[0042] The cooling system includes a copper pipe blowing duct, and the copper pipe blowing duct is used in cooperation with the welding head 6.

[0043] During the riveting process, each welding head 6 is equipped with a cooling system. Under the adjustment of the control system, the cooling time is adjusted according to actual needs. When the temperature of the welding head 6 is too high, the cooling system will be started in time to cool the welding head 6 to prevent the welding head 6 from being damaged due to overheating and extend the service life of the welding head 6. At the same time, the operation of the cooling system will also be monitored in real time by the control system to ensure its normal operation.

[0044] Inside the hot riveting machine body 1, there are also a number of pre-pressing mechanisms. The number of pre-pressing mechanisms is used to assist in fixing the riveting mechanism during riveting. The pre-pressing mechanism includes a pre-pressing rod 2. A buffer spring 3 is provided at the bottom of the pre-pressing rod 2. A pressing block 4 is provided at the bottom of the buffer spring 3. A rubber protection pad 5 is provided at the bottom of the pressing block 4.

[0045] The control system includes a PLC controller, and a welding program and a fault diagnosis program are built into the PLC controller.

[0046] The control system also has a powerful fault diagnosis function. By monitoring the operating parameters of various components such as the heating system and the riveting mechanism in real time, once an abnormal situation occurs, such as too high temperature, too large pressure fluctuation, etc., the system will immediately alarm and display the fault reason on the touch screen.

[0047] When a fault occurs, the maintenance personnel can quickly locate the problem according to the fault reason displayed on the touch screen and take corresponding solutions. For example, if the temperature is too high, the control system may automatically reduce the power of the induction coil or start the cooling system to cool down. If the pressure fluctuation is too large, it may check the operating status of the servo motor or adjust the pressure control parameters.

[0048] As the core of the control system, the PLC controller stores a variety of preset welding programs for different material combinations and door panel structures. After the operator selects a suitable welding program through the touch screen interface, the PLC controller will send instructions to the heating system according to the program settings.

[0049] When it is necessary to heat the riveted parts, the induction coil starts to work. At the same time, the PLC controller receives the temperature signal feedback from the temperature sensor. According to the temperature signal, the PLC controller automatically adjusts the power of the induction coil to achieve precise temperature control. At the same time, each set of hot riveting heads with independent temperature control has functions such as standard generalization, quick replacement as a whole or locally, real-time display of independent temperature, temperature adjustment, and precise constant temperature control. The heating part of the hot riveting head selects special high-performance heating tubes of the same specification, and the temperature adjustment and constant temperature control are realized by using thermal resistors with excellent anti-interference performance, precise temperature control modules, etc. The real-time temperature is displayed on the machine touch screen.

[0050] The heating system includes an induction coil and a temperature sensor. The induction coil is used to quickly heat the riveted parts, and the temperature sensor is in direct contact with the surface of the riveted parts.

[0051] The riveting mechanism includes a servo motor and a riveting die. The servo motor is used to drive the riveting die to move. The PLC controller sends a control signal to the servo motor according to the preset welding program to precisely adjust the riveting pressure. The servo motor provides a stable and precisely adjustable pressure according to the signal to push the riveting die to perform the riveting operation.

[0052] The riveting die adopts a detachable and replaceable design. According to the riveted parts of different shapes and sizes, the operator can quickly replace the corresponding die. The material of the die is high-strength alloy steel, which has undergone special surface treatment and has good wear resistance and corrosion resistance to ensure long-term stable riveting quality.

[0053] In summary, under the unified coordination of the control system, each module of the hot riveting machine closely cooperates to achieve efficient and precise door panel welding operations. The heating system provides uniform heating, the riveting mechanism provides stable pressure, the control system ensures precise control and fault diagnosis throughout the process, and the cooling system ensures the normal operation and lifespan of the welding head 6, jointly providing high-quality welding solutions for fields such as door panel manufacturing.

[0054] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hot riveting machine for door panels, characterized in that: It includes a hot riveting machine body (1), a control system, a riveting mechanism, a heating system, a cooling system and a plurality of welding heads (6). The control system is used to automatically control the coordinated operation of the riveting mechanism, the heating system and the cooling system. The riveting structure is used to apply a stable pressure to the connection point, and the pressure value is controlled by the control system. The heating system is used to perform high-frequency heating on the riveting parts and can monitor the real-time temperature of the riveting parts. The cooling system is used to dissipate heat and cool the welding heads (6).

2. The hot riveting machine for door panels according to claim 1, characterized in that: A plurality of the welding heads (6) are installed inside the hot riveting machine body (1), and the plurality of the welding heads (6) are used to weld the riveting parts.

3. The hot riveting machine for door panels according to claim 1, wherein: The cooling system includes a copper pipe blowing duct, and the copper pipe blowing duct is used in cooperation with the welding heads (6).

4. A hot riveting machine for door panels according to claim 1, characterized in that: A plurality of pre-pressing mechanisms are further provided inside the hot riveting machine body (1). The plurality of pre-pressing mechanisms are used to assist in fixing during riveting by the riveting mechanism. The pre-pressing mechanism includes a pre-pressing rod (2). A buffer spring (3) is provided at the bottom of the pre-pressing rod (2). A pressing block (4) is provided at the bottom of the buffer spring (3). A rubber protection pad (5) is provided at the bottom of the pressing block (4).

5. The hot riveting machine for door panels according to claim 1, characterized in that: The control system includes a PLC controller, and welding programs and fault diagnosis programs are built into the PLC controller.

6. A hot riveting machine for a door panel according to claim 1, characterized in that: The heating system includes an induction coil and a temperature sensor. The induction coil is used to quickly heat the riveting parts, and the temperature sensor is in direct contact with the surface of the riveting parts.

7. A hot riveting machine for door panels according to claim 1, characterized in that: The riveting mechanism includes a servo motor and a riveting die. The servo motor is used to drive the riveting die to move.

Images