Screw mounting mechanism based on PLC control

Abstract

The utility model belongs to the technical field of screw mounting mechanisms, in particular to a screw mounting mechanism based on PLC (programmable logic controller) control, which comprises a base and a driving motor, the driving motor is mounted in the base, the output end of the driving motor is fixed with a support column, and the support column is movably connected with the base through a bearing. According to the screw mounting mechanism based on PLC control, a screw and a clamping plate are limited together, a driving motor is started, the clamping plate moves to the position under an electric screwdriver, an electric telescopic rod is started, the electric screwdriver pushes the screw to move downwards, the screw is in butt joint with a screw hole of a workpiece, at the moment, an electromagnet is powered off, and the electric screwdriver is started; the electric screwdriver drives the screw to rotate to be limited together with the screw hole of the workpiece, so that a worker does not need to move the automatic screwdriver, the labor intensity of the worker is reduced, and the alignment precision of the screw and the screw hole of the workpiece is not affected by the energy of the worker.

Description

Technical Field

[0001] The utility model relates to the technical field of screw installation mechanisms, in particular to a screw installation mechanism based on PLC control. Background Art

[0002] The main purpose of installing screws is to firmly connect two or more components together to ensure their stable and reliable operation. This connection method is widely used in various fields such as construction, manufacturing and maintenance to ensure the integrity and functionality of the structure. Generally, workers need to use an automatic screwdriver to use the magnetism of the head to attract the screw, and then move the screw and the workpiece to complete the assembly:

[0003] According to announcement number CN218746074U, a screw installation mechanism includes a workbench, a screw arrangement and conveying device, and an automatic screw tightening device. The screw arrangement and conveying device is fixed to the workbench, and a screw delivery tube is connected between the screw arrangement and conveying device and the automatic screw tightening device. The workbench is provided with a manual adjustment assembly for controlling the working position of the automatic screw tightening device. The manual adjustment assembly includes a lifting slide bar fixed vertically to the workbench, a lifting block slidably connected to the lifting slide bar, a moving block slidably connected to the lifting block, and a spring balancer fixed to the upper end of the lifting slide bar and suspending the lifting block. The moving block moves horizontally relative to the lifting block, and the automatic screw tightening device is mounted on the moving block. This utility model has the following advantages and effects: it is easy to carry and move by hand, and has high installation efficiency;

[0004] The above patent mentioned that when the screw installation mechanism is in operation, the worker still needs to continue holding the automatic screwdriver during the installation process and move the automatic screwdriver to drive the screw to align with the screw hole of the workpiece, so the worker still needs to bear the workload of moving the automatic screwdriver. In addition, the worker manually moves the automatic screwdriver to drive the screw, so the alignment accuracy of the screw and the screw hole of the workpiece is also easily affected by the worker's energy. Therefore, we proposed a screw installation mechanism based on PLC control. Utility Model Content

[0005] The purpose of the present utility model is to provide a screw installation mechanism based on PLC control to solve the problem proposed in the above background technology that the worker needs to bear the workload of moving the automatic screwdriver, and the worker manually moves the automatic screwdriver to drive the screw, so that the alignment accuracy of the screw and the screw hole of the workpiece is also easily affected by the worker's energy.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a screw installation mechanism based on PLC control, comprising a base and a drive motor, a drive motor installed inside the base, and the output end of the drive motor is fixed to the pillar, the pillar is movably connected to the base through a bearing, the upper end of the pillar is connected to a fan-shaped plate, a first bracket is fixed on the upper side of the fan-shaped plate, one side of the first bracket is fixed to the upper end of the connecting spring, and the lower end of the connecting spring is connected to the connecting telescopic rod, and the fixed end of the connecting telescopic rod is movably connected to the fan-shaped plate through a rotating shaft.

[0007] Preferably, the sliding end of the connecting telescopic rod is movably connected to the clamping plate through a rotating shaft, and an electromagnet is installed on the inner side of the clamping plate.

[0008] Preferably, a positioning block and a second bracket are fixed in sequence on the upper side of the base, and an electric telescopic rod is installed at one end of the second bracket.

[0009] Preferably, an electric screwdriver is fixed to the lower end of the electric telescopic rod, and a transmission assembly is installed on the side of the base close to the telescopic rod, and the transmission assembly includes a conveyor belt and a conveying motor.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: the screw installation mechanism based on PLC control restrains the screw and the clamping plate together, starts the driving motor, moves the clamping plate to the bottom of the electric screwdriver, starts the electric telescopic rod, pushes the screw downward, and docks the screw with the screw hole of the workpiece; at this time, the electromagnet is powered off, and the electric screwdriver is started, so that the electric screwdriver drives the screw to rotate and restrain it with the screw hole of the workpiece, so that the staff does not need to move the automatic screwdriver, thereby reducing the labor intensity of the staff, and the alignment accuracy of the screw and the screw hole of the workpiece will not be affected by the staff's energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the three-dimensional structure of the base and support of the utility model;

[0012] Figure 2 This is a schematic diagram of the three-dimensional structure of the clamping plate and the electromagnet of the utility model;

[0013] Figure 3 For this utility model Figure 1 A schematic diagram of the partially enlarged structure at center A;

[0014] Figure 4 This is a schematic diagram of the three-dimensional structure of the telescopic rod connection of the utility model.

[0015] In the figure: 1. Base; 101. Drive motor; 102. Support; 103. Fan-shaped plate; 104. First bracket; 105. Connecting spring; 106. Connecting telescopic rod; 1061. Card; 1062. Electromagnet; 2. Positioning block; 201. Second bracket; 202. Electric telescopic rod; 203. Electric screwdriver; 204. Transmission assembly. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] See also Figure 1-Figure 4 The utility model provides a technical solution: a screw installation mechanism based on PLC control, including a base 1 and a driving motor 101, the driving motor 101 is installed inside the base 1, and the output end of the driving motor 101 is fixed to the pillar 102, the pillar 102 is movably connected to the base 1 through a bearing, the upper end of the pillar 102 is connected to a fan-shaped plate 103, the upper side of the fan-shaped plate 103 is fixed with a first bracket 104, one side of the first bracket 104 is fixed to the upper end of the connecting spring 105, and the lower end of the connecting spring 105 is connected to the connecting telescopic rod 106, the fixed end of the connecting telescopic rod 106 is movably connected to the fan-shaped plate 103 through a rotating shaft, and the connecting telescopic rod 1 The sliding end of 06 is movably connected to the card plate 1061 through a rotating shaft, and an electromagnet 1062 is installed on the inner side of the card plate 1061. The positioning block 2 and the second bracket 201 are fixed in sequence on the upper side of the base 1, and an electric telescopic rod 202 is installed at one end of the second bracket 201. An electric screwdriver 203 is fixed at the lower end of the electric telescopic rod 202. A transmission assembly 204 is installed on the side of the base 1 close to the connection of the telescopic rod 106. The transmission assembly 204 includes a conveyor belt and a conveying motor. The card plate 1061 matches the screw, the electromagnet 1062 is magnetically attracted to the screw, the positioning block 2 matches the screw hole of the workpiece, and the connection of the telescopic rod 106 consists of a sleeve, a sliding rod and a reset spring.

[0018] In specific implementation, according to Figure 1-Figure 4The screw installation mechanism is controlled by a PLC, that is, a programmable logic controller. The PLC receives input signals from sensors, switches and HMI to understand the current working status. The PLC controls the drive motor 101, the electromagnet 1062, the electric telescopic rod 202, the electric screwdriver 203 and the transmission component 204 according to the preset program and logic. When the screw installation mechanism is working, the electromagnet 1062 is energized to make the electromagnet 1062 magnetic, and the screws are placed on the conveyor belt of the transmission component 204 in turn, and the transmission power of the transmission component 204 is started. The machine makes the conveyor belt of the transmission component 204 convey the screw close to the card plate 1061. When the conveyor belt of the transmission component 204 conveys the screw into the card plate 1061, the electromagnet 1062 is magnetically attracted to the screw, so that the screw and the card plate 1061 are restricted together. At this time, the drive motor 101 is started, and the output end of the drive motor 101 drives the pillar 102 to rotate, so that the pillar 102 can drive the fan-shaped plate 103 to rotate. At the same time, the fan-shaped plate 103 drives the connecting telescopic rod 106 to move. At this time, the connecting telescopic rod 106 can drive the card plate 1061 to move to the electric screw The screwdriver 203 is just below the screw cutter 203, and at this time the staff can take the workpiece and place it on the upper side of the base 1, so that the screw hole of the workpiece is docked with the positioning block 2, and at this time the electric telescopic rod 202 is started, so that the output end of the electric telescopic rod 202 pushes the electric screwdriver 203 to move downward, so that the output end of the electric screwdriver 203 is docked with the groove of the screw, and the electric screwdriver 203 is continuously moved downward by the electric telescopic rod 202, so that the electric screwdriver 203 pushes the screw downward, and at this time the connecting telescopic rod 106 is rotated, so that the connecting spring is stretched under force, and at the same time the sliding rod connecting the telescopic rod 106 is moved along the sleeve The tube slides, causing the slide rod to squeeze the return spring to contract, causing the connecting telescopic rod 106 to extend, so that the connecting telescopic rod 106 drives the screw to dock with the screw hole of the workpiece through the clamping plate 1061. At this time, the electromagnet 1062 is powered off, so that the electromagnet 1062 and the screw are separated from the magnetic attraction. At this time, the electric screwdriver 203 is started, so that the electric screwdriver 203 drives the screw to rotate and be restricted together with the screw hole of the workpiece, so that the staff does not need to move the automatic screwdriver, thereby reducing the labor intensity of the staff, and the alignment accuracy of the screw and the screw hole of the workpiece will not be affected by the staff's energy.

[0019] To sum up, when the screw installation mechanism is working, the conveyor belt of the transmission assembly 204 transmits the screw into the clamping plate 1061, so that the screw and the clamping plate 1061 are restrained together, the drive motor 101 is started, and the clamping plate 1061 is driven to move to the bottom of the electric screwdriver 203, the electric telescopic rod 202 is started, and the electric screwdriver 203 pushes the screw down to dock with the screw hole of the workpiece, and the electric screwdriver 203 is started, so that the electric screwdriver 203 drives the screw to rotate and be restrained together with the screw hole of the workpiece, so that the staff does not need to move the automatic screwdriver, reducing the labor intensity of the staff, and the alignment accuracy of the screw and the screw hole of the workpiece will not be affected by the staff's energy. The content not described in detail in this description belongs to the existing technology known to professional and technical personnel in this field.

[0020] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A screw installation mechanism based on PLC control, comprising a base (1) and a drive motor (101), characterized in that: A driving motor (101) is installed inside the base (1), and the output end of the driving motor (101) is fixed to a pillar (102), and the pillar (102) is movably connected to the base (1) through a bearing, and the upper end of the pillar (102) is connected to a fan-shaped plate (103), and a first bracket (104) is fixed on the upper side of the fan-shaped plate (103), and one side of the first bracket (104) is fixed to the upper end of a connecting spring (105), and the lower end of the connecting spring (105) is connected to a connecting telescopic rod (106), and the fixed end of the connecting telescopic rod (106) is movably connected to the fan-shaped plate (103) through a rotating shaft.

2. The screw installation mechanism based on PLC control according to claim 1, characterized in that: The sliding end of the connecting telescopic rod (106) is movably connected to the clamping plate (1061) via a rotating shaft, and an electromagnet (1062) is installed on the inner side of the clamping plate (1061).

3. The screw installation mechanism based on PLC control according to claim 1, characterized in that: A positioning block (2) and a second bracket (201) are fixed in sequence on the upper side of the base (1), and an electric telescopic rod (202) is installed at one end of the second bracket (201).

4. The screw installation mechanism based on PLC control according to claim 3, characterized in that: An electric screwdriver (203) is fixed to the lower end of the electric telescopic rod (202), and a transmission assembly (204) is installed on the side of the base (1) close to the connection telescopic rod (106), and the transmission assembly (204) includes a conveyor belt and a conveying motor.

Images