Device for riveting valve shafts and magnets

Abstract

The present invention relates to a device for riveting valve shafts and magnetic sheets, including a carrier conveying mechanism and a riveting mechanism, the riveting mechanism is used to pick up the valve shaft and magnetic sheet on the carrier, and rivet the magnetic sheet and the valve shaft together, and place the riveted valve shaft and magnetic sheet on the carrier, the riveting mechanism includes a clamping rotating assembly, a positioning assembly and a riveting assembly, the clamping rotating assembly is used to clamp the valve shaft and magnetic sheet on the carrier and rotate them to the positioning assembly, the positioning assembly is used to position the valve shaft and magnetic sheet, and the riveting assembly is used to rivet the valve shaft and magnetic sheet at the positioning assembly together. In the above-mentioned device of the present invention, the riveting mechanism is used to pick up the valve shaft and magnetic sheet on the carrier, and rivet the magnetic sheet and the valve shaft together, and place the riveted valve shaft and magnetic sheet on the carrier. Therefore, the above-mentioned device of the present invention can realize automatic loading, automatic riveting and automatic unloading. It is conducive to improving the efficiency of the riveting process of the valve shaft and magnetic sheet.

Description

Technical Field

[0001] The invention relates to the field of electromagnetic valve assembly, in particular to a device for riveting a valve shaft and a magnetic sheet. Background Art

[0002] When assembling the solenoid valve used to prevent gas leakage on the gas stove, one of the processes is to assemble the magnetic sheet on the valve shaft. At present, this process is done manually by placing the magnetic sheet and the valve shaft on the riveting mechanism, and then starting the riveting mechanism to rivet the valve shaft and the magnetic sheet together. Then the riveted valve shaft and magnetic sheet are manually removed. This operation method is time-consuming and labor-intensive, and has low efficiency. Summary of the invention

[0003] Based on this, it is necessary to provide a device for performing rotary riveting on the valve shaft and the magnetic sheet to address the problem of low efficiency of the traditional rotary riveting method.

[0004] A device for riveting a valve shaft and a magnetic sheet, comprising a carrier conveying mechanism and a riveting mechanism, wherein the carrier conveying mechanism is used to convey the carrier,

[0005] The riveting mechanism is used to pick up the valve shaft and the magnetic sheet on the carrier, rivet the magnetic sheet and the valve shaft together, and place the riveted valve shaft and the magnetic sheet on the carrier.

[0006] The rotary riveting mechanism includes a clamping and rotating assembly, a positioning assembly and a rotary riveting assembly. The clamping and rotating assembly is used to clamp the valve shaft and the magnetic sheet on the carrier and rotate them to the positioning assembly. The positioning assembly is used to position the valve shaft and the magnetic sheet. The rotary riveting assembly is used to rivet the valve shaft and the magnetic sheet at the positioning assembly together.

[0007] In the above device of the present invention, the riveting mechanism is used to pick up the valve shaft and the magnetic sheet on the carrier, rivet the magnetic sheet and the valve shaft together, and place the riveted valve shaft and the magnetic sheet on the carrier. Therefore, the above device of the present invention can realize automatic loading, automatic riveting and automatic unloading. It is beneficial to improve the efficiency of the riveting process of the valve shaft and the magnetic sheet.

[0008] In one embodiment, the carrier conveying mechanism is a divider station, and the divider station is provided with a plurality of stations, and a carrier is provided at each station.

[0009] In one embodiment, the clamping rotating assembly includes two clamping claw cylinders, a rotating assembly and a first lifting assembly. The two clamping claw cylinders are respectively connected to the rotating assembly and are evenly distributed along the circumference of the rotating assembly. The rotating assembly is connected to the first lifting assembly. The positioning assembly includes a positioning block, a tightening block and a tightening cylinder. The positioning block is provided with a first positioning groove, the tightening block is provided with a second positioning groove, the tightening block is connected to the tightening cylinder, and the tightening block moves toward the positioning block under the drive of the tightening cylinder, and the valve shaft and the magnetic sheet are positioned by the cooperation of the first positioning groove and the second positioning groove.

[0010] In one of the embodiments, it also includes a riveting gap detection mechanism arranged on the downstream side of the riveting mechanism, the riveting gap detection mechanism is used to detect the axial gap between the valve shaft and the magnetic sheet after riveting, the riveting gap detection mechanism includes a gap detection frame and a displacement sensor installed on the gap detection frame, the riveting gap detection mechanism also includes a magnetic sheet clamping cylinder, a second lifting assembly and a third lifting assembly, the magnetic sheet clamping cylinder is arranged on one side of the displacement sensor and is connected to the second lifting assembly, the third lifting assembly is arranged below the displacement sensor, and the third lifting assembly is used to lift the valve shaft toward the displacement sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of a device for riveting a valve shaft and a magnetic sheet according to an embodiment of the present invention.

[0012] Figure 2 Schematic diagram of a rotary riveting mechanism according to an embodiment of the present invention.

[0013] Figure 3 It is a schematic diagram of a positioning assembly of a rotary riveting mechanism according to an embodiment of the present invention.

[0014] Figure 4 Schematic diagram of a riveting gap detection mechanism according to an embodiment of the present invention.

[0015] Figure 5 Schematic diagram of a valve shaft and a magnetic sheet on a carrier according to an embodiment of the present invention.

[0016] in:

[0017] 10. Valve shaft 20. Magnetic sheet

[0018] 100, complete machine frame 200, splitter station 201, carrier

[0019] 700, rotary riveting mechanism 701, first lifting assembly 702, rotating assembly

[0020] 703, clamping cylinder 704, tightening cylinder 705, positioning block

[0021] 705a, first positioning groove 706, tightening block 706a, second positioning groove

[0022] 707, rotary riveting assembly 708, guide block

[0023] 800, rotary riveting gap detection mechanism 801, gap detection rack

[0024] 802, displacement sensor 803, second lifting assembly 804, third lifting assembly

[0025] 804a, lifting rod 805, magnetic sheet clamping cylinder DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0029] like Figure 1As shown, an embodiment of the present invention provides a device for riveting a valve shaft and a magnetic sheet, including a carrier conveying mechanism and a riveting mechanism 700, wherein the carrier conveying mechanism is used to convey a carrier 201, the riveting mechanism 700 is used to pick up the valve shaft and the magnetic sheet on the carrier 201, and rivet the magnetic sheet and the valve shaft together, and place the riveted valve shaft and the magnetic sheet on the carrier 201, the riveting mechanism 700 includes a clamping rotating assembly 702, a positioning assembly and a riveting assembly 707, the clamping rotating assembly 702 is used to clamp the valve shaft and the magnetic sheet on the carrier 201 and rotate them to the positioning assembly, the positioning assembly is used to position the valve shaft and the magnetic sheet, and the riveting assembly 707 is used to rivet the valve shaft and the magnetic sheet at the positioning assembly together.

[0030] In the above device of the present invention, the riveting mechanism 700 is used to pick up the valve shaft and the magnetic sheet on the carrier 201, rivet the magnetic sheet and the valve shaft together, and place the riveted valve shaft and the magnetic sheet on the carrier 201. Therefore, the above device of the present invention can realize automatic loading, automatic riveting and automatic unloading, which is conducive to improving the efficiency of the riveting process of the valve shaft and the magnetic sheet.

[0031] In this embodiment, the carrier conveying mechanism is a divider station 200, and the divider station 200 is provided with multiple stations, each station is provided with a carrier 201, the riveting mechanism 700 is provided outside the first station, and the riveting gap detection mechanism 800 is provided outside the second station.

[0032] Specifically, the above-mentioned divider station 200 generally includes a turntable and a cam drive assembly for driving the turntable to move. A plurality of carriers 201 are evenly distributed along the circumference of the turntable, and a plurality of workstations are correspondingly arranged. The carriers 201 are used to carry the valve shaft and the magnetic sheet.

[0033] It can be understood that the above-mentioned carrier conveying mechanism can also be other types of conveying mechanisms, such as a linear conveying mechanism, as long as it can meet the above-mentioned functions.

[0034] Specifically, Figure 2 and Figure 3As shown, the gripping rotating assembly 702 includes two clamping claw cylinders 703, a rotating assembly 702 and a first lifting assembly 701. The two clamping claw cylinders 703 are respectively connected to the rotating assembly 702 and are evenly distributed along the circumference of the rotating assembly 702. The rotating assembly 702 is connected to the first lifting assembly 701. The positioning assembly includes a positioning block 705, a tightening block 706 and a tightening cylinder 704. In order to ensure that the tightening block 706 moves more accurately and smoothly, The positioning assembly may also include guide blocks 708 arranged on both sides of the tightening block 706, the positioning block 705 is provided with a first positioning groove 705a, the tightening block 706 is provided with a second positioning groove 706a, the tightening block 706 is connected to the tightening cylinder 704, the tightening block 706 moves toward the positioning block 705 under the drive of the tightening cylinder 704, and the valve shaft and the magnetic sheet are positioned by the first positioning groove 705a and the first positioning groove 705a cooperate with each other.

[0035] The rotating assembly 702 may be a rotating cylinder, or a rotating mechanism driven by a motor, etc. The first lifting assembly 701 may be a lifting mechanism such as a cylinder, etc. The riveting assembly 707 may be various riveting assemblies 707 in the prior art.

[0036] The two clamping cylinders 703 are respectively the first clamping cylinder and the second clamping cylinder. When the carrier 201 delivers the valve shaft with the magnetic sheet to the riveting mechanism 700, the first clamping cylinder clamps the valve shaft and the magnetic sheet, and then the first lifting component 701 raises the clamping cylinder 703 for a certain distance, so that the valve shaft and the magnetic sheet are separated from the carrier 201, and then the rotating component 702 rotates 180 degrees to rotate the first clamping cylinder to the positioning component, and at the same time, the idle second clamping cylinder rotates to the carrier conveying mechanism to prepare to clamp the valve shaft and magnetic sheet delivered from the next carrier 201. Next, the first lifting assembly 701 descends, and the first clamping cylinder places the valve shaft and the magnetic sheet into the first positioning groove 705a on the positioning block 705 of the positioning assembly. Then, the first clamping cylinder is released, and the tightening cylinder 704 drives the tightening block 706 to move toward the positioning block 705 until the valve shaft and the magnetic sheet are fixed by the cooperation of the second positioning groove 706a and the first positioning groove 705a. Next, the riveting assembly 707 starts to rotate downward to rivet the magnetic sheet and the valve shaft together. Next, the riveting assembly 707 is reset, the tightening cylinder 704 drives the tightening block 706 to reset, the first clamping cylinder clamps the riveted magnetic sheet and valve shaft, and at the same time, the second clamping cylinder has clamped the valve shaft and magnetic sheet on the new carrier 201, the rotating assembly 702 rotates 180 degrees, the first clamping cylinder transfers the riveted magnetic sheet and valve shaft to the position of the carrier 201, and the second clamping cylinder transfers the valve shaft and magnetic sheet to be riveted to the positioning assembly. The first lifting assembly 701 descends, the first clamping cylinder fixes the riveted magnetic sheet and valve shaft on the carrier 201, and the first clamping cylinder is released, so that the riveted magnetic sheet and valve shaft can continue to move with the carrier 201.

[0037] In this embodiment, Figure 4 and Figure 5 As shown, it also includes a riveting gap detection mechanism 800 arranged on the downstream side of the riveting mechanism 700, and the riveting gap detection mechanism 800 is used to detect the axial gap between the valve shaft and the magnetic sheet after riveting. The riveting gap detection mechanism 800 includes a gap detection frame 801 and a displacement sensor 802 installed on the gap detection frame 801. The riveting gap detection mechanism 800 also includes a magnetic sheet clamping cylinder 805, a second lifting assembly 803 and a third lifting assembly 804. The magnetic sheet clamping cylinder 805 is arranged on one side of the displacement sensor 802 and is connected to the second lifting assembly 803. The third lifting assembly 804 is arranged below the displacement sensor 802. The third lifting assembly 804 is used to lift the valve shaft toward the displacement sensor 802.

[0038] Specifically, after the carrier 201 moves to the riveting gap detection mechanism 800, the magnetic sheet clamping cylinder 805 clamps the magnetic sheet, and the second lifting component 803 drives the magnetic sheet clamping cylinder 805 to rise, so that the top of the valve shaft just touches the high-precision displacement sensor 802. The displacement sensor 802 records the value at this time as 0, and the third lifting component 804 set below the carrier 201 begins to push the bottom of the valve shaft, so that the riveted end face of the valve shaft is close to the magnetic sheet. At this time, the value recorded by the displacement sensor 802 is the axial gap between the valve shaft and the magnetic sheet after riveting. After the test is completed, each component is reversed and reset, and the magnetic sheet and valve shaft are reinserted into the carrier 201.

[0039] It should be noted that the second lifting assembly 803 may be a cylinder assembly, and the third lifting assembly 804 may include a cylinder assembly and a lifting rod 804a connected to the cylinder assembly, and the lifting rod 804a is used to lift the bottom of the valve shaft. A through hole may be provided on the carrier 201, and the lifting rod 804a can lift the bottom of the valve shaft through the through hole.

[0040] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A device for riveting a valve shaft and a magnetic sheet, characterized in that: It includes a carrier conveying mechanism and a riveting mechanism, wherein the carrier conveying mechanism is used to convey the carrier. The riveting mechanism is used to pick up the valve shaft and the magnetic sheet on the carrier, rivet the magnetic sheet and the valve shaft together, and place the riveted valve shaft and the magnetic sheet on the carrier. The rotary riveting mechanism includes a clamping and rotating assembly, a positioning assembly and a rotary riveting assembly. The clamping and rotating assembly is used to clamp the valve shaft and the magnetic sheet on the carrier and rotate them to the positioning assembly. The positioning assembly is used to position the valve shaft and the magnetic sheet. The rotary riveting assembly is used to rotary rivet the valve shaft and the magnetic sheet at the positioning assembly together. The carrier conveying mechanism is a divider station, and the divider station is provided with a plurality of stations, each station is provided with a carrier, The gripping rotating assembly includes two clamping claw cylinders, a rotating assembly and a first lifting assembly. The two clamping claw cylinders are respectively connected to the rotating assembly and are evenly distributed along the circumference of the rotating assembly. The rotating assembly is connected to the first lifting assembly. The positioning assembly includes a positioning block, a tightening block and a tightening cylinder. The positioning block is provided with a first positioning groove, the tightening block is provided with a second positioning groove, the tightening block is connected to the tightening cylinder, and the tightening block moves toward the positioning block under the drive of the tightening cylinder, and the valve shaft and the magnetic sheet are positioned by the first positioning groove and the first positioning groove. The invention also includes a riveting gap detection mechanism arranged at the downstream side of the riveting mechanism, the riveting gap detection mechanism is used to detect the axial gap between the valve shaft and the magnetic sheet after riveting, the riveting gap detection mechanism includes a gap detection frame and a displacement sensor installed on the gap detection frame, the riveting gap detection mechanism also includes a magnetic sheet clamping cylinder, a second jacking assembly and a third jacking assembly, the magnetic sheet clamping cylinder is arranged at one side of the displacement sensor and is connected to the second jacking assembly, the third jacking assembly is arranged below the displacement sensor, and the third jacking assembly is used to jack the valve shaft toward the displacement sensor. The two clamping jaw cylinders are the first clamping jaw cylinder and the second clamping jaw cylinder. When the carrier transports the valve shaft with the magnetic piece to the riveting mechanism, the first clamping jaw cylinder clamps the valve shaft and the magnetic piece, and the first lifting component raises the first clamping jaw cylinder for a distance so that the valve shaft and the magnetic piece are separated from the carrier. The rotating component rotates 180 degrees and rotates the first clamping jaw cylinder to the positioning component. The idle second clamping jaw cylinder rotates to the carrier conveying mechanism to prepare to clamp the valve shaft and magnetic piece transported from the next carrier. The first lifting component descends, and the first clamping jaw cylinder puts the valve shaft and the magnetic piece into the first positioning groove on the positioning block of the positioning component. Then, the first clamping jaw cylinder is released, and the tightening cylinder drives the tightening block to move toward the positioning block until it passes through the first The cooperation of the second positioning groove and the first positioning groove fixes the valve shaft and the magnetic sheet, and the rivet assembly starts to rotate downward to rivet the magnetic sheet and the valve shaft together; the rivet assembly resets, the tightening cylinder drives the tightening block to reset, the first clamping cylinder clamps the riveted magnetic sheet and valve shaft, the second clamping cylinder has clamped the valve shaft and magnetic sheet on the new carrier, the rotating assembly rotates 180 degrees, the first clamping cylinder transfers the riveted magnetic sheet and valve shaft to the carrier position, and the second clamping cylinder transfers the valve shaft and magnetic sheet to be riveted to the positioning assembly; the first lifting assembly descends, the first clamping cylinder fixes the riveted magnetic sheet and valve shaft on the carrier, the first clamping cylinder is released, and the riveted magnetic sheet and valve shaft can continue to move with the carrier; After the carrier moves to the riveting gap detection mechanism, the magnetic plate clamping cylinder clamps the magnetic plate, and the second lifting assembly drives the magnetic plate clamping cylinder to rise, so that the top of the valve shaft just contacts the high-precision displacement sensor. The displacement sensor records the value at this time as 0, and the third lifting assembly set under the carrier begins to push up the bottom of the valve shaft, so that the riveted end face of the valve shaft is in close contact with the magnetic plate. At this time, the value recorded by the displacement sensor is the axial gap between the valve shaft and the magnetic plate after riveting. After the test is completed, each component is reset by reverse operation, and the magnetic plate and valve shaft are reinserted into the carrier.

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