An auxiliary device for welding a drop hammer test specimen of ferritic steel

Abstract

The present application relates to the technical field of welding tooling, and specifically discloses an auxiliary device for welding of a ferritic steel drop hammer sample, which comprises a base, a work station groove is arranged on the base, the work station groove has an open side and a positioning side which are horizontally opposite, the positioning side is provided with a positioning wall, and a heat dissipation structure is arranged at the bottom of the base; a floating pressing mechanism is arranged at the open side, and comprises a floating pressing block, an elastic member and a limiting member; the floating pressing block is slidingly arranged on the base and can drive the sample to abut against the positioning wall in the horizontal direction under the drive of the elastic member; a guide surface is arranged on the side of the floating pressing block facing the work station groove; a material withdrawing mechanism is arranged at the end of the base away from the floating pressing mechanism; the material withdrawing mechanism compensates for the thickness tolerance of the sample by horizontal floating pressing and opens the upper welding space, cooperates with the bottom heat dissipation to inhibit thermal deformation, and realizes rapid unloading, so as to meet the automatic welding requirement of the drop hammer sample, and improve the welding quality and the loading and unloading efficiency.

Description

Technical Field

[0001] This invention relates to the field of welding tooling technology, specifically to an auxiliary device for welding ferritic steel drop hammer specimens. Background Technology

[0002] The current method of welding drop hammer test specimens mainly relies on manual placement of the specimens on the workbench for direct welding. This method lacks effective fixation and heat dissipation, making the specimens prone to wave deformation when heated and resulting in unstable weld formation, which affects the reliability of the drop hammer test results.

[0003] Traditional welding fixtures often use bolts to tighten the specimens one by one, which is cumbersome and has low clamping efficiency. For specimens with thickness tolerances, fixed clamping blocks cannot ensure that all specimens are subjected to uniform force at the same time, which can easily cause some specimens to loosen, resulting in unstable welding quality. In addition, automated welding requires the welding torch to have sufficient working space, but the clamping structure of existing fixtures often occupies the area above the specimen, which interferes with automated welding.

[0004] The purpose of this invention is to provide an auxiliary device for welding ferritic steel drop hammer specimens, so as to solve the problems mentioned in the background art. Summary of the Invention

[0005] To achieve the above objectives, the present invention provides an auxiliary device for welding ferritic steel drop hammer specimens, characterized in that: it includes a base, a work station groove is provided on the base, the work station groove has an open side and a positioning side opposite to each other in the horizontal direction, the positioning side is provided with a positioning wall, and the bottom of the base is provided with a heat dissipation structure; A floating clamping mechanism is set on the open side of the work station slot, including a floating pressure block, an elastic element and a limiting element. The limiting element is detachably installed on the base. The floating pressure block is slidably set on the base and can slide relative to the base in the horizontal direction. The elastic element is set between the floating pressure block and the limiting element and drives the floating pressure block to move toward the positioning wall. The side of the floating pressure block facing the work station slot is provided with a guide surface. The material ejection mechanism is located on the base at the end furthest from the floating clamping mechanism; By using a horizontal floating clamping mechanism to compensate for the thickness tolerance of the sample and open the welding space above, and in conjunction with the heat dissipation structure at the bottom of the base to suppress welding thermal deformation, as well as the unloading mechanism to achieve rapid unloading, the positioning and clamping requirements of automated welding of drop hammer samples are met, thereby improving welding quality and loading and unloading efficiency.

[0006] As a further improvement of the present invention, the heat dissipation structure is a comb-shaped or grid-shaped structure, which is composed of multiple spaced stiffeners. By setting the heat dissipation structure at the bottom of the base in a comb-like or grid-like manner, and by using multiple spaced ribs, the heat dissipation area is increased, achieving passive heat dissipation without the need for external cooling medium and suppressing welding thermal deformation.

[0007] As a further improvement of the present invention, the limiting member includes a slider and a cover. The slider is embedded in the work station groove, and the cover is closed on the top of the slider and fixed to the base by bolts. By setting the limiting component as a separate structure of slider and cover, and embedding the slider in the work station slot and connecting the cover to the base with bolts, the limiting component can be detached and installed, which facilitates assembly and maintenance.

[0008] As a further improvement of the present invention, the floating clamping mechanism also includes a guide rod, one end of which is fixedly connected to the floating pressure block, the slider has a movable cavity inside, the other end of which slides through the slider and extends into the movable cavity, and an elastic element is sleeved on the guide rod, with its two ends abutting against the slider and the floating pressure block respectively. By setting a guide rod and a movable cavity, the guide rod slides through the slider, and the elastic element is sleeved on the guide rod and abuts against the slider and the floating pressure block respectively, which ensures the guiding accuracy of the horizontal sliding of the floating pressure block and the stability of the elastic force.

[0009] As a further improvement of the present invention, a limiting boss is provided at the end of the guide rod away from the floating pressure block. The radial dimension of the limiting boss is larger than the diameter of the hole on the slider through which the guide rod passes. The limiting boss is placed in the movable cavity. By setting a limiting boss at the end of the guide rod and making the radial dimension of the limiting boss larger than the diameter of the hole on the slider through which the guide rod passes, the sliding stroke of the floating pressure block is limited, preventing the floating pressure block from completely disengaging from the guide rod and the slider.

[0010] As a further improvement of the present invention, the floating block includes a block body and a support base, the block body and the support base being detachably connected by screws, and the support base being connected to a guide rod; By setting the floating pressure block as a separate structure of the pressure block body and the support base, and making the pressure block body and the support base detachably connected by screws, the pressure block body can be quickly replaced, reducing the cost of replacing vulnerable parts and reducing downtime.

[0011] As a further improvement of the present invention, the base is provided with grooves and protrusions on both sides, and multiple bases are spliced ​​together by adjacent grooves and protrusions. By setting grooves and protrusions on both sides of the base, multiple bases can be spliced ​​together through the cooperation of adjacent grooves and protrusions, which realizes flexible expansion of workstations according to the welding quantity requirements and improves batch welding efficiency.

[0012] As a further improvement of the present invention, the unloading mechanism includes a support button and a connecting shaft. A through groove is provided at the end of the base near the positioning side. The support button is rotatably installed in the through groove through the connecting shaft. An opening communicating with the through groove is provided at the bottom of the work station groove. The support end of the support button extends into the work station groove through the opening. By opening a through groove at the end of the base and rotating the mounting support button, the support end of the support button extends into the work station groove through the opening at the bottom of the work station groove, thus enabling the sample to be lifted out of the work station groove by pressing the button, which facilitates the material unloading operation.

[0013] As a further improvement of the present invention, the unloading mechanism also includes a protective baffle, which is installed on the outer wall of the base and covers the outside of the support button; By installing a protective baffle covering the outside of the support button, accidental material ejection caused by accidental activation of the support button is prevented, thus improving operational safety.

[0014] As a further improvement of the present invention, a slope is provided at the top of the positioning wall; By setting a ramp at the top of the positioning wall, the sample slides into the work station groove along the ramp and squeezes the floating pressure block to retreat, which realizes the rapid loading and automatic clamping of the sample and improves the clamping efficiency.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention uses a horizontal floating clamping mechanism to press the sample against the positioning wall with elastic force, effectively compensating for the sample thickness tolerance and ensuring clamping reliability. At the same time, it completely opens the space above the sample, avoiding welding gun interference and meeting the requirements of automated welding.

[0016] 2. This invention provides a comb-shaped or grid-shaped heat dissipation structure at the bottom of the base, and uses ribs to increase the heat dissipation area, thereby quickly dissipating welding heat, effectively suppressing thermal warping deformation of the sample, and ensuring the quality of weld formation.

[0017] 3. In this invention, the interlocking of the groove on the side of the base and the protrusion enables rapid splicing and disassembly of multiple bases. The number of workstations can be flexibly expanded according to the batch welding quantity, thereby improving the efficiency of batch welding.

[0018] 4. By setting up a material ejection mechanism consisting of a support button and a protective baffle, pressing the button will push the sample out of the work station slot. Combined with the slide at the top of the positioning wall, it can achieve rapid loading and unloading, greatly shortening the loading and unloading time. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the sample assembly of the present invention; Figure 3 This is a schematic diagram of the overall structure of the present invention. Figure 2 ; Figure 4 For the present invention Figure 3 Separate diagram of each component; Figure 5This is a schematic diagram of the floating clamping mechanism of the present invention; Figure 6 This is a schematic diagram of the overall structure of the present invention. Figure 3 ; Figure 7 For the present invention Figure 6 Separate diagram of each component; Figure 8 This is a schematic diagram of a combination of multiple devices according to the present invention.

[0020] In the diagram: 1. Base; 11. Workstation slot; 12. Through slot; 13. Positioning wall; 131. Slope; 14. Groove; 15. Protrusion; 16. Opening; 17. Heat dissipation structure; 2. Floating clamping mechanism; 21. Floating pressure block; 211. Pressure block body; 212. Support base; 22. Guide rod; 221. Limiting boss; 23. Elastic element; 24. Limiting element; 241. Slider; 242. Cover; 243. Movable cavity; 3. Unloading mechanism; 31. Support button; 32. Protective baffle; 4. Sample. Detailed Implementation

[0021] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the present invention. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. Rather, these embodiments are provided to make the disclosure of the present invention more thorough and complete.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] The present invention will be further described in detail below with reference to the accompanying drawings.

[0025] Combined with appendix Figure 1-8A preferred embodiment of the present invention provides an auxiliary device for welding ferritic steel drop hammer specimen 4, including a base 1, a work station groove 11 on the base 1, the work station groove 11 having an open side and a positioning side opposite to each other in the horizontal direction, the positioning side having a positioning wall 13, and a heat dissipation structure 17 at the bottom of the base 1. The floating pressing mechanism 2 is located on the open side of the work station slot 11 and includes a floating pressing block 21, an elastic element 23 and a limiting element 24. The limiting element 24 is detachably installed on the base 1. The floating pressing block 21 is slidably disposed on the base 1 and can slide relative to the base 1 in the horizontal direction. The elastic element 23 is disposed between the floating pressing block 21 and the limiting element 24 and drives the floating pressing block 21 to move toward the positioning wall 13. The side of the floating pressing block 21 facing the work station slot 11 is provided with a guide surface. The material ejection mechanism 3 is located on the base 1 at one end away from the floating clamping mechanism 2.

[0026] In this embodiment, through the cooperation of the base 1, the floating clamping mechanism 2, and the unloading mechanism 3, multiple stations can be simultaneously clamped and welded for the drop hammer specimen 4. Compared with the existing single-piece clamping processing method, the device of this invention has flexible multi-station expansion, improves batch welding efficiency, and reduces the number of clamping operations, thereby reducing the labor intensity of the operator. On the other hand, the floating pressure block 21, driven by the elastic element 23, presses the specimen 4 against the positioning wall 13 in the horizontal direction, making the top of the specimen 4 completely open and avoiding interference with the welding torch. Moreover, the compression amount of the elastic element 23 can adaptively compensate for the thickness tolerance of the specimen 4, ensuring that specimens 4 of different thicknesses can be reliably clamped, thus improving the stability of welding quality. In addition, the heat dissipation structure 17 at the bottom of the base 1 quickly dissipates the welding heat, effectively suppressing welding thermal deformation and ensuring the quality of weld formation. Furthermore, the unloading mechanism 3 enables the rapid unloading of the specimen 4, significantly shortening the loading and unloading time and improving the overall operation efficiency.

[0027] In this embodiment, the base 1 is made of copper or chromium zirconium copper, and the width of the work station groove 11 is slightly larger than the width of the standard drop hammer sample 4, so as to facilitate the loading and unloading of the sample 4.

[0028] Optionally, such as Figures 1-3 As shown, the heat dissipation structure 17 is a comb-shaped or grid-shaped structure, consisting of multiple spaced stiffeners.

[0029] In this optional solution, the dense rib structure acts as a highly efficient heat sink, utilizing its large specific surface area to quickly conduct and dissipate the heat generated during the welding process, effectively preventing warping and deformation due to heat accumulation and ensuring a smooth weld formation.

[0030] In this optional solution, the base 1 can be placed in a flowing water tank, where the water flow through the comb-like structure can further remove heat to accommodate welding processes with higher heat input.

[0031] Optionally, such as Figures 4-5 As shown, the limiting member 24 includes a slider 241 and a cover 242. The slider 241 is embedded in the work station groove 11, and the cover 242 covers the slider 241 and is fixed to the base 1 by bolts.

[0032] In this optional solution, the cover 242 is connected and fixed to the base 1 by bolts, which confines the slider 241 within the work station slot 11 and facilitates subsequent disassembly and maintenance.

[0033] Optionally, such as Figure 5 As shown, the floating pressing mechanism 2 also includes a guide rod 22. One end of the guide rod 22 is fixedly connected to the floating pressure block 21. The slider 241 has a movable cavity 243 inside. The other end of the guide rod 22 slides through the slider 241 and extends into the movable cavity 243. The elastic element 23 is sleeved on the guide rod 22, and its two ends abut against the slider 241 and the floating pressure block 21 respectively.

[0034] In this optional scheme, the guide rod 22 guides the sliding of the floating pressure block 21, ensuring that the floating pressure block 21 moves linearly in the horizontal direction. The elastic element 23 is sleeved on the guide rod 22, and its two ends abut against the slider 241 and the floating pressure block 21 respectively, and always applies an elastic preload force toward the positioning wall 13 to the floating pressure block 21.

[0035] Optionally, such as Figure 7 As shown, the end of the guide rod 22 away from the floating pressure block 21 is provided with a limiting boss 221. The radial dimension of the limiting boss 221 is larger than the diameter of the hole on the slider 241 through which the guide rod 22 passes. The limiting boss 221 is placed in the movable cavity 243.

[0036] In this optional solution, the limiting boss 221 cooperates with the cavity wall of the movable cavity 243 to limit the sliding stroke of the floating pressure block 21 and prevent the floating pressure block 21 from falling out.

[0037] Optionally, such as Figure 5 As shown, the floating pressure block 21 includes a pressure block body 211 and a support base 212. The pressure block body 211 and the support base 212 are detachably connected by screws, and the support base 212 is connected to the guide rod 22.

[0038] In this optional solution, the pressure block body 211 and the support base 212 are connected by screws. After the pressure block body 211 wears out due to frequent contact with the sample 4 during use, it can be disassembled and replaced separately without replacing the entire floating pressure block 21, which reduces maintenance costs and downtime.

[0039] In this optional solution, a soft pad made of nylon or polyurethane can be embedded at the end of the contact surface between the pressure block body 211 and the sample 4, and the elastic deformation of the soft pad can be used to further compensate for the dimensional error of the sample 4.

[0040] Optionally, such as Figure 1 , Figure 2 , Figure 8 As shown, the base 1 has grooves 14 and protrusions 15 on both sides, and multiple bases 1 are spliced ​​together by the cooperation of adjacent grooves 14 and protrusions 15.

[0041] In this optional solution, multiple bases 1 are spliced ​​together by adjacent grooves 14 and protrusions 15, which enables rapid assembly and disassembly of multiple bases 1. This allows for flexible expansion of workstations according to actual welding quantity requirements, adapting to different batches of welding tasks.

[0042] Optionally, such as Figures 6-7 As shown, the unloading mechanism 3 includes a support button 31 and a connecting shaft. A through groove 12 is provided at the end of the base 1 near the positioning side. The support button 31 is rotatably installed in the through groove 12 through the connecting shaft. The bottom of the work station groove 11 is provided with an opening 16 communicating with the through groove 12. The support end of the support button 31 extends into the work station groove 11 through the opening 16.

[0043] In this optional solution, the support button 31 is installed in the through groove 12 and can rotate around its connecting shaft. The support end of the support button 31 extends into the work station groove 11 through the opening 16 at the bottom of the work station groove 11. After welding is completed, the operator presses the support button 31, and the support end rotates upward to lift the sample 4. After the sample 4 leaves the bottom of the work station groove 11, it automatically slides out along the slide 131 at the top of the positioning wall 13 under the elastic force of the elastic element 23, thus completing the material removal.

[0044] In this optional solution (not shown), when multiple bases 1 are arranged side by side, the support buttons 31 of each base 1 can be connected by a connecting rod. The connecting rod is also connected to the pressing end of each support button 31. When one of the support buttons 31 is pressed, the connecting rod drives the other support buttons 31 to rotate synchronously, so as to realize one-time batch linkage material ejection.

[0045] Optionally, the unloading mechanism 3 also includes a protective baffle 32, which is installed on the outer wall of the base 1 and covers the outside of the support button 31.

[0046] In this optional solution, the protective baffle 32 is installed outside the support button 31, which effectively prevents the operator from accidentally touching the support button 31 and causing accidental material ejection, thus improving operational safety.

[0047] Optionally, the top of the positioning wall 13 is provided with a slope 131.

[0048] In this optional scheme, when clamping, one end of the sample 4 rests on the slide 131 and is pushed into the station slot 11 along the slide 131; when unloading, the sample 4 is lifted up and slides out along the slide 131. The slide 131 plays a guiding role in both loading and unloading the sample 4.

[0049] The working process of this device is as follows: During the setup phase, based on the requirements of the automated welding robot, the base 1 is initially positioned and fixed using the workbench base plate, and multiple bases 1 are parallelly assembled using grooves 14 and protrusions 15 according to the batch welding quantity.

[0050] During the clamping stage, the operator holds the drop hammer sample 4 and places it above the work station slot 11. One end of the sample 4 is placed in the work station slot 11, and the other end rests on the ramp 131 at the top of the positioning wall 13. The sample 4 is pushed down along the ramp 131. During the pushing process, the sample 4 squeezes the guide surface of the floating pressure block 21. The floating pressure block 21 overcomes the resistance of the elastic element 23 and moves backward in the horizontal direction to give way. The elastic element 23 is further compressed. When the sample 4 falls completely into the work station slot 11, the elastic element 23 releases its elastic force and pushes the floating pressure block 21 to press the sample 4 against the vertical surface of the positioning wall 13 in the horizontal direction, completing the automatic clamping. Since the compression amount of the elastic element 23 can be automatically adjusted according to the actual thickness of the sample 4, for different samples 4 with different thickness tolerances, the elastic element 23 can apply an appropriate clamping force through its own compression amount change to ensure that samples 4 of different thicknesses are reliably clamped. At this time, the top of the sample 4 is completely open without any obstruction, which facilitates welding by the automatic welding robot.

[0051] During the welding stage, the heat generated during welding is quickly dissipated through the comb-shaped heat dissipation structure 17 at the bottom of the base 1, effectively suppressing the thermal warping deformation of the sample 4 and ensuring the quality of the weld formation.

[0052] During the unloading stage, after welding is completed, the operator presses the support button 31. The initial position of the support end is embedded in the opening 16 at the bottom of the work station 11. After pressing the support button 31, the support button 31 rotates around the axis, and the support end lifts the sample 4 upward, so that the sample 4 is separated from the bottom of the work station 11. At this time, the elastic element 23 pushes the floating pressure block 21 to press the sample 4 against the positioning wall 13. After the sample 4 is lifted, it is subjected to the horizontal component force and automatically slides out along the ramp 131 at the top of the positioning wall 13, completing the unloading. After releasing the support button 31, the support button 31 can be manually reset after being pressed, or automatically reset to the initial position under the downward pressure of the sample 4 during the next clamping process.

[0053] The present invention has been described by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. An auxiliary device for welding ferritic steel drop hammer specimens, characterized in that: Includes a base (1), on which a work station groove (11) is provided. The work station groove (11) has an open side and a positioning side opposite to each other in the horizontal direction. The positioning side is provided with a positioning wall (13). The bottom of the base (1) is provided with a heat dissipation structure (17). The floating pressing mechanism (2) is set on the open side of the work station slot (11) and includes a floating pressing block (21), an elastic element (23) and a limiting element (24). The limiting element (24) is detachably installed on the base (1). The floating pressing block (21) is slidably set on the base (1) and can slide relative to the base (1) in the horizontal direction. The elastic element (23) is set between the floating pressing block (21) and the limiting element (24) and drives the floating pressing block (21) to move toward the positioning wall (13). The floating pressing block (21) has a guide surface on the side facing the work station slot (11). The material ejection mechanism (3) is located on the base (1) at one end away from the floating clamping mechanism (2).

2. The auxiliary device for welding ferritic steel drop hammer specimens according to claim 1, characterized in that: The heat dissipation structure (17) is a comb-shaped or grid-shaped structure, consisting of multiple spaced stiffeners.

3. The auxiliary device for welding ferritic steel drop hammer specimens according to claim 1, characterized in that: The limiting component (24) includes a slider (241) and a cover (242). The slider (241) is embedded in the work station groove (11), and the cover (242) covers the slider (241) and is fixed to the base (1) by bolts.

4. The auxiliary device for welding ferritic steel drop hammer specimens according to claim 3, characterized in that: The floating clamping mechanism (2) also includes a guide rod (22), one end of which is fixedly connected to the floating pressure block (21). The slider (241) has a movable cavity (243) inside. The other end of the guide rod (22) slides through the slider (241) and extends into the movable cavity (243). The elastic element (23) is sleeved on the guide rod (22), and its two ends abut against the slider (241) and the floating pressure block (21) respectively.

5. The auxiliary device for welding ferritic steel drop hammer specimens according to claim 4, characterized in that: The guide rod (22) is provided with a limiting boss (221) at one end away from the floating pressure block (21). The radial dimension of the limiting boss (221) is larger than the diameter of the hole on the slider (241) through which the guide rod (22) passes. The limiting boss (221) is placed in the movable cavity (243).

6. The auxiliary device for welding ferritic steel drop hammer specimens according to claim 4, characterized in that: The floating block (21) includes a block body (211) and a support base (212). The block body (211) and the support base (212) are detachably connected by screws. The support base (212) is connected to the guide rod (22).

7. The auxiliary device for welding ferritic steel drop hammer specimens according to claim 1, characterized in that: The base (1) has grooves (14) and protrusions (15) on both sides respectively. Multiple bases (1) are spliced ​​together by adjacent grooves (14) and protrusions (15).

8. The auxiliary device for welding ferritic steel drop hammer specimens according to claim 1, characterized in that: The material ejection mechanism (3) includes a support button (31) and a connecting shaft. The base (1) has a through groove (12) at the end near the positioning side. The support button (31) is rotatably installed in the through groove (12) through the connecting shaft. The bottom of the work station groove (11) has an opening (16) that communicates with the through groove (12). The support end of the support button (31) extends into the work station groove (11) through the opening (16).

9. The auxiliary device for welding ferritic steel drop hammer specimens according to claim 8, characterized in that: The material ejection mechanism (3) also includes a protective baffle (32), which is installed on the outer wall of the base (1) and covers the outside of the support button (31).

10. An auxiliary device for welding ferritic steel drop hammer specimens according to claim 1, characterized in that: The top of the positioning wall (13) is provided with a landslide (131).

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