Spring pressing anti-rotation mechanism

Abstract

The present application relates to a kind of spring press tight anti-rotation mechanism, belong to electron beam welding technical field, solve the problem of rotation of rotary shaft when electron beam welding is in the annular welding process of workpiece rotation;The spring press tight anti-rotation mechanism includes first rod body, second rod body, third rod body, press block, sliding block, linear guide rail, connecting plate, spring press block, flat head screw, cylindrical spring and lifting switch rod;It is Z-shaped connection between the first rod body, second rod body and third rod body, the bending of Z-shaped connection is 90 °, the first rod body side is equipped with the press block for pressing rotary shaft.The spring press tight anti-rotation mechanism of the present application can automatically rise press block when rotating in the annular welding process of workpiece when electron beam welding, without affecting the rotation of rotary shaft, also can press rotary shaft when welding tool assembly welding piece or transfer welding piece, avoid the rotation of rotary shaft, automatically realize whole process, without manual intervention, without electric energy.

Description

Technical Field

[0001] This invention relates to the field of electron beam welding technology, and in particular to a spring-loaded anti-rotation mechanism. Background Technology

[0002] For products with annular welds, a welding fixture with a rotating shaft is typically designed for electron beam welding. The product is clamped and fixed onto the welding fixture, which is then transferred to the electron beam platform. A positioner on the electron beam platform clamps the rotating shaft of the welding fixture, and the positioner drives the fixture to rotate, completing the annular weld. For products with annular welds, to achieve full automation of the welding process, each product must be placed in the same position within the electron beam chamber. Therefore, the rotating shaft of the welding fixture must not rotate during product transfer. However, once the fixture is placed on the electron beam platform, the rotating shaft must be able to rotate with the positioner. Therefore, an anti-rotation mechanism needs to be designed on the welding fixture to prevent the rotating shaft from rotating during transfer, and to automatically unlock and rotate with the positioner once the fixture is placed on the electron beam platform. Summary of the Invention

[0003] In view of the above analysis, the present invention aims to provide a spring-compression anti-rotation mechanism to solve the problem of rotation of the rotating shaft during the annular welding process of the workpiece in electron beam welding, as mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A spring-loaded anti-rotation mechanism includes a first rod, a second rod, a third rod, a pressure block, a slider, a linear guide rail, a connecting plate, a spring-loaded pressure block, a flat-head screw, a columnar spring, and a lifting switch rod; the first rod, the second rod, and the third rod are connected in a Z-shape, with the bend of the Z-shape being 90°, and a pressure block for pressing the rotating shaft is provided on one side of the first rod.

[0006] Furthermore, a lifting switch rod is fixed in the middle of the third rod body, and a columnar groove is provided on the upper part of the lifting switch rod. The upper part of the lifting switch rod is slidably connected to the spring clamping block. A columnar spring is sleeved on the part of the lifting switch rod located on the upper part of the third rod body. The upper and lower ends of the columnar spring contact the spring clamping block and the third rod body respectively. The upper end of the spring clamping block contacts the flat-head screw, and the flat-head screw is threadedly connected to the connecting plate.

[0007] Furthermore, a slider is provided on one side of the second rod, and the slider is slidably connected to the linear guide rail.

[0008] Furthermore, the linear guide is fixed inside the welding fixture.

[0009] Furthermore, the connecting plate is fixed inside the welding fixture.

[0010] Furthermore, reinforcing ribs are fixed between the first rod and the second rod, and between the second rod and the third rod.

[0011] Furthermore, the spring clamping block includes a disc and a cylinder, which are arranged perpendicularly to each other, and the center line of the cylinder coincides with the center line of the disc.

[0012] Furthermore, the downward pressure of the pressure block on the rotating shaft can be adjusted by adjusting the flat-head screw.

[0013] Furthermore, when the lower end of the lifting switch rod is not subjected to an upward supporting force, the lower end of the lifting switch rod is lower than the bottom of the welding fixture.

[0014] Furthermore, when the welding fixture is placed on the electron beam platform, the lower end of the lifting switch rod is subjected to an upward supporting force, causing the lifting switch rod to move upward and the pressure block to no longer contact the rotating shaft.

[0015] A welding fixture includes a spring-loaded anti-rotation mechanism;

[0016] It also includes a support adjustment module, an end clamping module, a weld support module, and a power supply module; the support adjustment module has slidable end clamping modules installed on both sides of its upper end, and two slidable weld support modules are provided in the middle of the upper end of the support adjustment module. A power supply module is installed on one side of the support adjustment module, and the power supply module is detachably connected to the support adjustment module.

[0017] The support adjustment module includes four sliding adjustment components and four conductive components. The sliding adjustment components can adjust the position of the end clamping module and the weld support module on the support adjustment module, and the conductive components can provide electrical energy to the end clamping module and the weld support module.

[0018] The end clamping module includes a first support base, a first rotating base, a first rotating seat, a first rotating shaft, and a clamping component; the first rotating base is installed on one side of the first support base, the first rotating base is rotatably connected to the first rotating seat, the clamping component is installed on the first rotating seat, and the first rotating shaft is installed on the first rotating seat.

[0019] The weld support module includes a second support base, a lower support retaining ring component, an upper support retaining ring component, a retaining ring pin, and a retaining ring power supply component; the lower support retaining ring component is installed on the upper part of the second support base, and the lower support retaining ring component is connected to the upper support retaining ring component through the retaining ring pin; the retaining ring power supply component is installed on the second support base.

[0020] The power supply module includes a power supply quick-connect female component and a power supply quick-connect female component; the power supply quick-connect female component is fixed to one side of the support adjustment module, and the power supply quick-connect female component and the power supply quick-connect female component are detachably connected.

[0021] The above technical solution has at least one of the following beneficial effects:

[0022] (1) The spring clamping anti-rotation mechanism of the present invention, through the design of the first rod, the second rod, the third rod, the pressure block, the columnar spring and the lifting switch rod, enables the spring clamping anti-rotation mechanism to automatically rise the pressure block when rotation is required during the annular welding of the workpiece in electron beam welding, without affecting the rotation of the rotating shaft. It can also clamp the rotating shaft when the welding fixture is assembling or transferring the welded parts, thus preventing the rotation of the rotating shaft. The whole process is automatic, without manual intervention and without electricity.

[0023] (2) The flat-head screw of the present invention can adjust the compression of the columnar spring. When the flat-head screw is adjusted downward, the compression of the columnar spring is greater, and the downward pressure provided is greater, that is, the friction of the pressure block on the rotating shaft is greater. In other words, the friction of the pressure block on the rotating shaft can be adjusted by adjusting the position of the flat-head screw.

[0024] (3) The end clamping module and weld support module of the present invention clamp both sides of the welded part, so that when facing the clamping of the irregular tubular welded part, both sides of each welded part are clamped, avoiding the problem of instability when a single clamping component clamps the irregular tubular welded part, and preventing welding deformation.

[0025] (4) Based on preventing the deformation of the welded parts during welding, the present invention achieves unobstructed circumferential welding, so that the assembly tooling can weld the circumferential weld in one go, ensuring assembly quality while achieving high welding efficiency.

[0026] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained from what is particularly pointed out in the description and drawings. Attached Figure Description

[0027] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0028] Figure 1 This is one of the structural schematic diagrams of a spring-compressed anti-rotation mechanism according to the present invention.

[0029] Figure 2 This is a second schematic diagram of the structure of a spring-compressed anti-rotation mechanism according to the present invention.

[0030] Figure 3 This is a cross-sectional view of the lifting switch rod of a spring-compressed anti-rotation mechanism according to the present invention.

[0031] Figure 4 This is a schematic diagram of the pressure block of a spring-pressed anti-rotation mechanism according to the present invention.

[0032] Figure 5 This is one of the structural schematic diagrams of a spring-loaded anti-rotation mechanism of the present invention placed inside a welding fixture.

[0033] Figure 6 This is the second schematic diagram of the structure of a spring-loaded anti-rotation mechanism of the present invention placed inside a welding fixture.

[0034] Figure 7 This is one of the structural diagrams of a welding fixture placed on an electron beam platform.

[0035] Figure 8 The second schematic diagram shows the structure of the welding fixture placed on the electron beam platform.

[0036] Figure 9 This is a schematic diagram of the welding fixture in Example 2.

[0037] Figure 10 This is a schematic diagram of the weld support module in Example 2.

[0038] Figure label:

[0039] 1. First rod body; 2. Second rod body; 3. Third rod body; 4. Pressure block; 5. Slider; 6. Linear guide rail; 7. Connecting plate; 8. Spring clamping block; 9. Flat head screw; 10. Columnar spring; 11. Lifting switch rod; 12. Rotary shaft; 13. Reinforcing rib plate; 101. Welding fixture; 102. Electron beam platform;

[0040] 1011. Support adjustment module; 1012. End clamping module; 1013. Weld support module; 1014. Power supply module;

[0041] 10121. First support base; 10122. First rotating base; 10123. First rotating seat; 10124. First rotating shaft; 10125. Clamping component;

[0042] 10131. Second support base; 10132. Lower support retaining ring component; 10133. Upper support retaining ring component; 10134. Retaining ring pin; 10135. Retaining ring power supply component;

[0043] 10141. Power supply quick-connect mother component, 10142. Power supply quick-connect daughter component. Detailed Implementation

[0044] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0045] Example 1

[0046] A specific embodiment of the present invention discloses a spring-compression anti-rotation mechanism, such as... Figure 1 , Figure 2 As shown, it includes a first rod 1, a second rod 2, a third rod 3, a pressure block 4, a slider 5, a linear guide rail 6, a connecting plate 7, a spring clamping block 8, a flat-head screw 9, a columnar spring 10, and a lifting switch rod 11; the first rod 1, the second rod 2, and the third rod 3 are connected in a Z-shape, and the bend of the Z-shape is 90°. A pressure block 4 for clamping the rotary shaft 12 is provided on one side of the first rod 1.

[0047] The principle of the pressure block 4 pressing down on the rotating shaft 12 is to increase the friction between the rotating shaft 12 and the external environment, making it difficult for it to rotate; the friction between the pressure block 4 and the rotating shaft 12 requires greater force to overcome the resistance and rotate.

[0048] The first rod 1, the second rod 2, and the third rod 3 are connected in a Z-shape. The function of the first rod 1, the second rod 2, and the third rod 3 is to synchronously transmit the rising and falling of the lifting switch rod 11 to the pressure block 4, thereby transmitting force.

[0049] Preferred, such as Figure 3 and Figure 4 As shown, a lifting switch rod 11 is fixed in the middle of the third rod body 3. The upper part of the lifting switch rod 11 is provided with a columnar sliding groove. The upper part of the lifting switch rod 11 is slidably connected to the spring clamping block 8. The part of the lifting switch rod 11 located on the upper part of the third rod body 3 is fitted with a columnar spring 10. The upper and lower ends of the columnar spring 10 contact the spring clamping block 8 and the third rod body 3 respectively. The upper end of the spring clamping block 8 contacts the flat-head screw 9. The flat-head screw 9 is threadedly connected to the connecting plate 7.

[0050] The column spring 10 can drive the lifting switch rod 11, the third rod 3, the second rod 2, the first rod 1, and the pressure block 4 to move downwards when the lifting switch rod 11 is not supported upwards. The pressure block 4 presses down on the rotating shaft 12. The flat-head screw 9 can adjust the compression of the column spring 10. When the flat-head screw 9 is adjusted downwards, the greater the compression of the column spring 10, the greater the downward pressure provided, that is, the greater the friction of the pressure block 4 on the rotating shaft 12. In other words, the friction of the pressure block 4 on the rotating shaft 12 can be adjusted by adjusting the position of the flat-head screw 9.

[0051] Preferably, a slider 5 is provided on one side of the second rod 2, and the slider 5 is slidably connected to the linear guide rail 6.

[0052] The slider 5 and the linear guide rail 6 enable the pressure block 4 to move up and down stably, which limits, guides and stabilizes the movement of the second rod 2.

[0053] The first rod 1, the second rod 2, and the third rod 3 connected by a Z-shape can achieve stable support and connection, ensuring the reliability and stability of the structure.

[0054] The pressure block 4 can be used to press the rotating shaft 12 to prevent it from rotating, thus achieving the anti-rotation function.

[0055] The sliding connection between the columnar groove on the lifting switch rod 11 and the spring clamping block 8 enables elastic adjustment of the columnar spring 10.

[0056] The function of the column spring 10 is to provide elastic force. The column spring 10 presses down the third rod 3, the second rod 2 and the first rod 1. The first rod 1 presses down the pressure block 4. The pressure block 4 presses the rotating shaft 12 tightly to prevent the rotating shaft 12 from rotating.

[0057] The flat-head screw 9 presses the spring clamping block 8, adjusting the positional relationship between the spring clamping block 8 and the lifting switch rod 11;

[0058] When the lifting switch rod 11 is not subjected to an upward supporting force, and the pressure block 4 does not contact the rotating shaft 12 or the rotating shaft 12 still rotates after the pressure block 4 contacts the rotating shaft 12, the flat-head screw 9 can press down the pressure block 4 through the spring clamping block 8, the column spring 10, the third rod 3, the second rod 2, and the first rod 1, thus completing the adjustment of the pressure block 4 to prevent the rotating shaft 12 from rotating.

[0059] Preferred, such as Figure 5 and Figure 6 As shown, the linear guide 6 is fixed inside the welding fixture 101.

[0060] Preferably, the connecting plate 7 is fixed inside the welding fixture 101.

[0061] Preferably, reinforcing ribs 13 are fixed between the first rod 1 and the second rod 2, and between the second rod 2 and the third rod 3.

[0062] The reinforcing rib 13 can distribute the force at the joint between the first rod 1 and the second rod 2, and between the second rod 2 and the third rod 3, thus preventing the joint from breaking.

[0063] Preferably, the spring clamping block 8 includes a disc and a cylinder, which are arranged perpendicularly to each other, and the center line of the cylinder coincides with the center line of the disc.

[0064] The disc can hold one end of the cylindrical spring, and the cylinder can cooperate with the lifting switch rod to prevent the cylindrical spring from bending when compressed.

[0065] Preferably, the downward pressure of the pressure block 4 on the rotary shaft 12 can be adjusted by adjusting the flat-head screw 9.

[0066] Preferably, when the lower end of the lifting switch rod 11 is not subjected to an upward supporting force, the lower end of the lifting switch rod 11 is lower than the bottom of the welding fixture 101.

[0067] Preferred, such as Figure 7 and Figure 8 As shown, when the welding fixture 101 is placed on the electron beam platform 102, the lower end of the lifting switch rod 11 is subjected to an upward supporting force, the lifting switch rod 11 moves upward, and the pressure block 4 no longer contacts the rotating shaft 12.

[0068] This spring-loaded anti-rotation mechanism is installed inside the welding fixture 101. When the welding fixture 101 is installing the workpiece to be welded or during the process of the welding fixture 101 transferring the electron beam platform 102, the lifting switch rod 11 is not subjected to an upward supporting force, the column spring 10 extends, and the lifting switch rod 11 has a downward tendency. The third rod 3, the second rod 2, the first rod 1 and the pressure block 4, which are fixedly connected to the lifting switch rod 11, also have a downward tendency. The pressure block 4 presses the rotating shaft 12, and the rotating shaft 12 is locked and cannot rotate.

[0069] During the process of transferring the welding fixture 101 to the electron beam platform 102, the lifting switch rod 11 cannot descend when it contacts the electron beam platform 102. The welding fixture 101 continues to descend, that is, the lifting switch rod 11 rises relative to the main body of the welding fixture 101. The columnar spring 10 is compressed, and the third rod 3, the second rod 2, the first rod 1 and the pressure block 4 rise with the rise of the lifting switch rod 11. The rotary shaft 12 is unlocked and can rotate freely.

[0070] Example 2

[0071] This embodiment 2 is a welding fixture 101, such as Figure 9 As shown, the spring-compression anti-rotation mechanism of Embodiment 1 also includes a support adjustment module 1011, an end clamping module 1012, a weld support module 1013, and a power supply module 1014. The support adjustment module 1011 has slidable end clamping modules 1012 installed on both sides of its upper end, and two slidable weld support modules 1013 are provided in the middle of the upper end of the support adjustment module 1011. The power supply module 1014 is installed on one side of the support adjustment module 1011, and the power supply module 1014 is detachably connected to the support adjustment module 1011.

[0072] The support adjustment module 1011 can adjust the position of the end clamping module 1012 and the weld support module 1013 on the support adjustment module 1011 in order to accommodate welded parts of different lengths.

[0073] The end clamping module 1012 and the weld support module 1013 support the two sides of the welded part, respectively. The structure with the two sides supporting it is better at clamping irregular tubular structures than a single ring clamp, and can avoid problems such as insecure clamping, welded part displacement and welded part rotation that exist with a single ring clamp.

[0074] The support adjustment module 1011 includes four sliding adjustment components and four conductive components. The sliding adjustment components can adjust the position of the end clamping module 1012 and the weld support module 1013 on the support adjustment module 1011, and the conductive components can provide electrical energy to the end clamping module 1012 and the weld support module 1013.

[0075] The sliding adjustment component is used to adjust the position of the end clamping module 1012 and the weld support module 1013 on the support adjustment module 1011 in order to accommodate welded parts of different lengths.

[0076] The end clamping module 1012 includes a first support base 10121, a first rotating base 10122, a first rotating seat 10123, a first rotating shaft 10124, and a clamping member 10125. The first rotating base 10122 is mounted on one side of the first support base 10121, the first rotating base 10122 is rotatably connected to the first rotating seat 10123, the clamping member 10125 is mounted on the first rotating seat 10123, and the first rotating shaft 10124 is mounted on the first rotating seat 10123.

[0077] During electron beam welding, the welding of the ring-shaped part is achieved by rotating the first rotating shaft 10124 of the robotic arm to rotate the part during welding.

[0078] like Figure 10As shown, the weld support module 1013 includes a second support base 10131, a lower support retaining ring component 10132, an upper support retaining ring component 10133, a retaining ring pin 10134, and a retaining ring power supply component 10135; the lower support retaining ring component 10132 is installed on the upper part of the second support base 10131, the lower support retaining ring component 10132 is connected to the upper support retaining ring component 10133 through the retaining ring pin 10134, and the retaining ring power supply component 10135 is installed on the second support base 10131.

[0079] The power supply module 1014 includes a power supply quick-connect female component 10141 and a power supply quick-connect female component 10142; the power supply quick-connect female component 10142 is fixed to one side of the support adjustment module 1011, and the power supply quick-connect female component 10142 and the power supply quick-connect female component 10141 are detachably connected.

[0080] The spring-loaded anti-rotation mechanism is located inside the end clamping module 1012.

[0081] In this embodiment, the end clamping module 1012 and the weld support module 1013 clamp both sides of the welded component, so that when facing the clamping of the irregular tubular welded component, both sides of each welded component are clamped, avoiding the problem of instability when a single clamping component 10125 clamps the irregular tubular welded component, and preventing welding deformation.

[0082] This embodiment, while preventing welding deformation, allows for unobstructed circumferential welding, enabling the assembly fixture to weld the circumferential weld in one pass, thus ensuring assembly quality and high welding efficiency.

[0083] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A welding fixture, characterized in that, The system includes a spring-loaded anti-rotation mechanism, a support adjustment module (1011), an end clamping module (1012), and a weld support module (1013). The support adjustment module (1011) has slidable end clamping modules (1012) installed on both sides of its upper end, and two slidable weld support modules (1013) are located in the middle of its upper end. The support adjustment module (1011) can adjust the positions of the end clamping modules (1012) and the weld support modules (1013) on the support adjustment module (1011) to accommodate welded parts of different lengths. The spring-loaded anti-rotation mechanism is located inside the end clamping module (1012). The end clamping module (1012) and the weld support modules (1013) are used to clamp both sides of the welded part, thereby achieving clamping of the irregularly shaped tubular welded part. The spring-loaded anti-rotation mechanism includes a first rod (1), a second rod (2), a third rod (3), a pressure block (4), a slider (5), a linear guide rail (6), a connecting plate (7), a spring-loaded block (8), a columnar spring (10), and a lifting switch rod (11); the first rod (1), the second rod (2), and the third rod (3) are connected in a Z-shape, with the bend of the Z-shape being 90°. A pressure block for pressing the rotating shaft (12) is provided on one side of the first rod (1). 4) A lifting switch rod (11) is fixed in the middle of the third rod body (3). The upper part of the lifting switch rod (11) is provided with a columnar sliding groove. The upper part of the lifting switch rod (11) is slidably connected to the spring pressing block (8). The part of the lifting switch rod (11) located on the upper part of the third rod body (3) is fitted with a columnar spring (10). When the lower end of the lifting switch rod (11) is not subjected to an upward supporting force, the lower end of the lifting switch rod (11) is lower than the bottom of the welding fixture (101).

2. The welding fixture according to claim 1, characterized in that, It also includes a flat-head screw (9), the upper and lower ends of the columnar spring (10) respectively contact the spring clamping block (8) and the third rod (3), the upper end of the spring clamping block (8) contacts the flat-head screw (9), and the flat-head screw (9) is threadedly connected to the connecting plate (7).

3. The welding fixture according to claim 2, characterized in that, The second rod (2) has a slider (5) on one side, and the slider (5) is slidably connected to the linear guide rail (6).

4. The welding fixture according to claim 1, characterized in that, The linear guide (6) is fixed inside the welding fixture (101).

5. The welding fixture according to claim 1, characterized in that, The connecting plate (7) is fixed inside the welding fixture (101).

6. The welding fixture according to claim 1, characterized in that, A reinforcing rib (13) is fixed between the first rod (1) and the second rod (2) and between the second rod (2) and the third rod (3).

7. The welding fixture according to claim 4, characterized in that, The spring clamping block (8) includes a disc and a cylinder, which are arranged perpendicularly to each other, and the center line of the cylinder coincides with the center line of the disc.

8. A welding fixture according to claim 2, characterized in that, The downward pressure of the pressure block (4) on the rotary shaft (12) can be adjusted by adjusting the flat-head screw (9).

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