Efficient welding process and device for ruler blank and pin column of digital display angle ruler

Abstract

The invention discloses an efficient welding process and device for a ruler blank and a pin column of a digital display bevel protractor, and the efficient welding process for the ruler blank and the pin column of the digital display bevel protractor comprises the following steps: S1, ensuring that the materials, the sizes and the specifications of the ruler blank and the pin column meet the design requirements; s2, proper welding equipment is selected; s3, accurately aligning the ruler blank and the pin column by using a special clamp or a positioning device; s4, preheating the welding area; and S5, the ruler blank and the pin column are welded together through a proper welding method. The efficient welding device for the ruler blank and the pin column of the digital display angle ruler comprises a welding assembly, a pushing assembly and a ventilation assembly. According to the welding process, the welding firmness degree is greatly guaranteed, the pin column and the ruler blank are tightly connected, a stable and reliable overall structure is formed, and compared with a traditional method, the welding duration is greatly shortened, the production efficiency is improved, and manpower, material resources and time cost are effectively saved.

Description

Technical Field

[0001] The invention relates to the field of welding technology, and in particular to a high-efficiency welding process and device for a digital display angle ruler blank and a pin. Background Art

[0002] Welding is a technique that uses heat to melt and connect two or more metal parts. Welding technology plays a vital role in the welding of the ruler blank and the pin. Through welding, the ruler blank and the pin can be firmly connected together to form an integral structure, thus meeting the needs of various application scenarios.

[0003] For the current welding device, when welding the ruler blank and the pin, harmful gases and metal smoke are often generated. These harmful gases not only have high temperatures that affect welding, but also emit into the air and cause serious pollution to the atmosphere. The metal smoke is not only easily deposited in the welding area to affect welding, but also has serious harm to the human body. Because its particles are tiny, it is very easy to be inhaled into the mouth and nose, which is very dangerous. Based on this, the present invention proposes an efficient welding process and device for a digital display angle ruler blank and a pin. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a high-efficiency welding process and device for a digital display angle ruler blank and a pin.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: An efficient welding process for a digital angle ruler blank and a pin comprises the following steps: S1. Prepare materials: ensure that the material, size and specifications of the ruler and pin meet the design requirements, and clean the welding parts to remove impurities such as oil, rust and oxides to ensure welding quality; S2. Prepare equipment: Select appropriate welding equipment, such as arc welding machine, resistance welding machine, and then select appropriate welding parameters, such as welding current, voltage and welding speed, according to the characteristics and thickness of the welding material; S3. Positioning and clamping: Use a special fixture or positioning device to accurately align the ruler blank and the pin to ensure that the gap at the welding part is uniform and meets the design requirements. The clamping fixture should be firm and reliable to prevent the ruler blank and the pin from moving or deforming during welding; S4, preheating: preheating the inert protective gas through the heater so that the protective gas preheats the entire interior and the temperature is uniform; S5. Welding work: Fix the pin and the stainless steel ruler in precise positions to ensure that they can contact accurately in subsequent operations. Use the welding machine to connect the pin and the stainless steel ruler with positive and negative high voltage. When the welding machine is started and the pin contacts the ruler, the 0.9mm thin shaft at the bottom of the pin quickly reaches the melting point and changes from solid to liquid due to the high heat brought by the high voltage conduction, and fuses with the stainless steel ruler, thus playing the role of welding connection very firmly. In addition, during the welding process, the welding parameters should be strictly controlled to ensure the quality of the weld. After the welding is completed, the spatter and welding slag on the weld surface should be cleaned in time for subsequent inspection and treatment; S6. Weld inspection: Use special inspection tools to conduct visual inspection and dimension measurement of welds to ensure that the welds are free of defects such as cracks, slag inclusions, and lack of fusion, and that the dimensions meet the design requirements. If defects are found in the welds or the dimensions do not meet the requirements, they should be corrected and repaired in a timely manner; S7. Subsequent treatment: stress relief treatment is performed on the welding parts to reduce welding stress and prevent welding deformation. Then, anti-corrosion treatment is performed on the welding parts to improve their corrosion resistance and service life. Then, the welded digital angle ruler is assembled and debugged to ensure that its function and performance meet the design requirements for subsequent use. The present invention also provides a digital display angle ruler blank and pin efficient welding device, comprising a sliding component, a pushing component and a ventilation component; The pushing assembly is used to push the ruler blank continuously and regularly, and the pushing assembly includes a base, a fixing box fixedly connected to the top of the base, and a first motor fixedly connected to the top of the fixing box; A loading box is fixedly connected to the bottom of the base; The ventilation assembly is used to neutralize harmful gases generated during welding and collect waste gas, and the ventilation assembly includes a cover plate fixedly connected to the top of the base, a welding hole opened on one side of the cover plate, and a welding box fixedly connected to the top of the cover plate and located above the welding hole; The welding assembly is used to slide and transport the pin and press it down with power to complete the welding work. The welding assembly includes two second fixed plates fixedly connected to the top of the base and a threaded rod rotatably connected between the two second fixed plates. A second guide rod is fixedly connected between the two second fixed plates and on one side of the threaded rod. A sliding block is threadedly sleeved on the threaded rod and slidably connected to the second guide rod. A rotating motor is fixedly connected to one side of the sliding block. An electric telescopic rod is fixedly connected to the bottom of the rotating motor. A presser is fixedly connected to the bottom of the electric telescopic rod. A second motor is fixedly connected to one side of one of the second fixed plates. The driving end of the second motor is fixedly connected to the threaded rod.

[0006] Preferably, a through hole is provided on the top of the welding box, a first air box is fixedly connected to the side of the top of the base close to the welding box, a second air box is fixedly connected to the top of the first air box, a shunt pipe is fixedly connected to one side of the first air box and the second air box, a conversion valve is fixedly connected to the shunt pipe, a heater is fixedly connected to the side of the shunt pipe close to the second air box, the conversion valve is connected to the welding box through an air intake pipe, an air pump is fixedly connected to the side of the welding box away from the air intake pipe and located on the top of the cover plate, the air pump and the welding box are connected through a connecting pipe, a storage box is fixedly connected to the top of the cover plate, an exhaust gas box is fixedly connected to the top of the storage box, a fixed frame connected to the storage box on one side of the exhaust gas box is fixedly connected, the fixed frame is connected to the air pump through an air collecting pipe, and a scraping assembly for filtering and collecting metal smoke in the exhaust gas is arranged inside the fixed frame.

[0007] Preferably, the fixed box is rotatably connected to the first gear inside, the fixed box is rotatably connected to the second gear on one side close to the first gear inside, the second gear is fixedly connected to the top of the fan-shaped gear, the fixed box is fixedly connected to the inside of a fixed rod, a toothed plate is slidably connected to the fixed rod, a spring is fixedly connected between the toothed plate and the inner wall of the fixed box, a fixed block fixedly connected to the toothed plate is slidably provided at the bottom of the fixed box, two push rods are fixedly connected to one side of the fixed block, and push blocks are fixedly connected to the side of the two push rods away from the fixed block, the first gear is fixedly connected to the driving end of the first motor, and the first gear is transmission-connected to a grinding component for synchronously grinding away oil stains and oxide layers in the welding area of ​​the ruler blank.

[0008] Preferably, the grinding assembly includes a first bevel gear rotatably connected to the top of the cover plate, the first bevel gear is connected to the first gear through a synchronous belt, the inside of the cover plate is rotatably connected to a grinding wheel fixedly connected to the first bevel gear, the inside of the cover plate is fixedly connected to a lower electrode located on the base, and a cleaning assembly for synchronously cleaning grinding debris on the surface of the ruler blank after grinding is provided on one side of the first bevel gear and on the top of the cover plate.

[0009] Preferably, an upper electrode is arranged inside the press, and a thread matching with the pin is provided on the inner wall of the press.

[0010] Preferably, the cleaning assembly includes two first fixed plates fixedly connected to the cover plate, a reciprocating screw is rotatably connected between the two first fixed plates, a first guide rod is fixedly connected between the two first fixed plates and below the reciprocating screw, one side of the first fixed plate close to the first bevel gear is rotatably connected to a second bevel gear fixedly connected to the reciprocating screw, a screw nut is threadedly sleeved on the reciprocating screw, a cleaning brush fixedly connected to the screw nut is slidably connected to the first guide rod, and a cleaning groove is provided on the side of the cover plate close to the cleaning brush.

[0011] Preferably, the scraping assembly includes a filter plate fixedly connected to the inside of the fixed frame and located on the exhaust gas box, a connecting rod fixedly connected to one side of the screw nut, two synchronization rods fixedly connected to the connecting rod that are slidably connected to the fixed frame, a cleaning scraper fixedly connected to one side of the two synchronization rods and located inside the fixed frame, and a collecting hole connected to the fixed frame is opened on the top of the storage box close to the fixed frame.

[0012] The present invention has the following beneficial effects: 1. By setting a pushing component and a grinding component, the first motor can drive the first gear to rotate, and the first gear drives the second gear to rotate synchronously. At this time, the fan-shaped teeth on the second gear rotate to push the tooth plate to slide along the fixed rod, and the intermittent compression of the spring can be used to push the tooth plate to drive the push block to push the ruler blank into the cover plate at a fixed time to feed the material. At the same time, the first motor drives the first bevel gear to rotate by driving the synchronous belt, and then drives the grinding wheel thereon to rotate. The grinding wheel can be used to rotate and grind the welding surface of the ruler blank during the pushing gap of the push block to eliminate the oxide layer and oil stains.

[0013] 2. By setting up the ventilation component and the welding component, the air pump can be started to extract air from the inside of the second gas box to the inside of the welding box. At this time, the heater preheats the shielding gas flowing out from the shunt pipe inside the second gas box, and then sends it to the inside of the welding box through the air inlet pipe. The inside of the welding box is gradually filled with the heated shielding gas, which can not only preheat the welding area inside the welding box and the whole as well as control the temperature, but also protect the welding process through the shielding gas. Then, the conversion valve is opened, and the air pump extracts the neutralizing gas that can neutralize the harmful gas from the inside of the first gas box. It is sent to the inside of the welding box through the air intake pipe to prevent harmful gases that will be generated during welding in advance. Then the second motor is started, the threaded rod rotates, and the slider on the threaded rod slides along the second guide rod. The rotating motor drives the presser to rotate and fix the pin through its internal thread. At this time, the upper electrode and the pin are in contact with each other, and then the electric telescopic rod pushes the presser through the through hole to the welding hole to press down the fed billet for welding. After welding is completed, the air pump continues to extract air from the inside of the welding box to transport the exhaust gas inside the welding box to the inside of the exhaust gas box.

[0014] 3. By setting up a sweeping component and a scraping component, the rotation of the first bevel gear can drive the second bevel gear to rotate, and the second bevel gear can drive the reciprocating screw to rotate. The reciprocating screw drives the screw nut thereon to drive the cleaning brush to slide back and forth along the first guide rod, so as to pass through the cleaning groove to sweep away debris on the surface of the polished scale blank. At the same time, the screw nut drives the synchronous rod to slide back and forth along the fixed frame through the connecting rod, and the cleaning scraper can be pushed by the synchronous rod to scrape back and forth along the surface of the filter plate, so that the metal smoke on the filter plate can be scraped and collected by the cleaning scraper.

[0015] 4. Through the welding assembly, the pin and the stainless steel ruler blank are connected by the welding machine using the positive and negative high voltage conduction method. When the pin contacts the ruler blank, the small shaft of only 0.9mm at the bottom can melt instantly and weld the ruler blank and the pin together. This precise and efficient welding method not only greatly ensures the firmness of the welding, but also makes the pin and the ruler blank closely connected to form a stable and reliable overall structure, which can effectively avoid loosening, falling off and other problems during subsequent use; and the process completes the welding operation in an instant. Compared with the traditional welding method, it greatly shortens the welding time and improves the production efficiency, which provides strong technical support for the large-scale production of stainless steel rulers and other related products, and effectively saves manpower, material resources and time costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of a digital display angle ruler blank and a pin efficient welding device proposed by the present invention; Figure 2This is a side structural schematic diagram of a digital display angle ruler blank and a pin efficient welding device proposed by the present invention; Figure 3 It is a schematic diagram of the top view of the base in the present invention; Figure 4 It is a schematic diagram of the structure inside the fixed box of the present invention; Figure 5 It is a structural schematic diagram of the bottom of the fixing box in the present invention; Figure 6 It is a structural schematic diagram of the top of the cover plate in the present invention; Figure 7 It is a schematic diagram of the structure of the scraping component in the present invention; Figure 8 It is a schematic diagram of the structure inside the cover plate of the present invention.

[0017] In the figure: 1 base, 2 fixing box, 3 first gear, 4 second gear, 5 sector gear, 6 fixing rod, 7 tooth plate, 8 spring, 9 fixing block, 10 push rod, 11 push block, 12 first motor, 13 cover plate, 14 first bevel gear, 15 synchronous belt, 16 grinding wheel, 17 welding hole, 18 welding box, 19 through hole, 20 first air box, 21 second air box, 22 shunt pipe, 23 conversion valve, 24 heater, 25 intake pipe, 26 air pump, 27 connecting pipe, 28 storage box, 29 waste Air box, 30 fixed frame, 31 filter plate, 32 first fixed plate, 33 reciprocating screw, 34 first guide rod, 35 second bevel gear, 36 screw nut, 37 cleaning brush, 38 cleaning groove, 39 connecting rod, 40 synchronization rod, 41 cleaning scraper, 42 collecting hole, 43 gas collecting pipe, 44 lower electrode, 45 loading box, 46 second fixed plate, 47 threaded rod, 48 second guide rod, 49 slider, 50 rotating motor, 51 electric telescopic rod, 52 presser, 53 second motor. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] An efficient welding process for a digital angle ruler blank and a pin comprises the following steps: S1. Prepare materials: ensure that the material, size and specifications of the ruler and pin meet the design requirements, and clean the welding parts to remove impurities such as oil, rust and oxides to ensure welding quality; S2. Prepare equipment: Select appropriate welding equipment, such as arc welding machine, resistance welding machine, and then select appropriate welding parameters, such as welding current, voltage and welding speed, according to the characteristics and thickness of the welding material; S3. Positioning and clamping: Use a special fixture or positioning device to accurately align the ruler blank and the pin to ensure that the gap at the welding part is uniform and meets the design requirements. The clamping fixture should be firm and reliable to prevent the ruler blank and the pin from moving or deforming during welding; S4, preheating: preheating the inert protective gas through the heater so that the protective gas preheats the entire interior and the temperature is uniform; S5. Welding work: Fix the pin and the stainless steel ruler in precise positions to ensure that they can contact accurately in subsequent operations. Use the welding machine to connect the pin and the stainless steel ruler with positive and negative high voltage. When the welding machine is started and the pin contacts the ruler, the 0.9mm thin shaft at the bottom of the pin quickly reaches the melting point and changes from solid to liquid due to the high heat brought by the high voltage conduction, and fuses with the stainless steel ruler, thus playing the role of welding connection very firmly. In addition, during the welding process, the welding parameters should be strictly controlled to ensure the quality of the weld. After the welding is completed, the spatter and welding slag on the weld surface should be cleaned in time for subsequent inspection and treatment; S6. Weld inspection: Use special inspection tools to conduct visual inspection and dimension measurement of welds to ensure that the welds are free of defects such as cracks, slag inclusions, and lack of fusion, and that the dimensions meet the design requirements. If defects are found in the welds or the dimensions do not meet the requirements, they should be corrected and repaired in a timely manner; S7. Subsequent processing: stress relief treatment is performed on the welding parts to reduce welding stress and prevent welding deformation. Secondly, anti-corrosion treatment is performed on the welding parts to improve their corrosion resistance and service life. Then, the welded digital angle ruler is assembled and debugged to ensure that its function and performance meet the design requirements for subsequent use. Example

[0020] Reference Figure 1-Figure 7 A digital display angle ruler blank and pin efficient welding device, comprising: a welding assembly, a pushing assembly and a ventilation assembly; The pushing component is used to push the ruler blank continuously and regularly, and the pushing component includes a base 1, a fixing box 2 fixedly connected to the top of the base 1, and a first motor 12 fixedly connected to the top of the fixing box 2; A loading box 45 is fixedly connected to the bottom of the base 1, and materials are automatically and fixedly loaded into the cover plate 13 through the loading box 45; The ventilation assembly is used to neutralize the harmful gases generated during welding and collect waste gas. The ventilation assembly includes a cover plate 13 fixedly connected to the top of the base 1, a welding hole 17 is opened on one side of the cover plate 13, a welding box 18 is fixedly connected to the top of the cover plate 13 and located above the welding hole 17, and a through hole 19 is opened on the top of the welding box 18. A first gas box 20 is fixedly connected to the side of the top of the base 1 close to the welding box 18. The first gas box 20 is filled with a neutralizing gas for neutralizing and detoxifying the toxic gas of welding. A second gas box 21 is fixedly connected to the top of the first gas box 20. The second gas box The interior of 21 is filled with an inert protective gas for protecting the welding process. A shunt pipe 22 is fixedly connected to one side of the first gas box 20 and the second gas box 21. A conversion valve 23 is fixedly connected to the shunt pipe 22. By setting the conversion valve 23, the order of ventilating the first gas box and the second gas box 21 to the welding box 18 can be freely controlled. A heater 24 is fixedly connected to one side of the shunt pipe 22 close to the second gas box 21. The protective gas can be preheated by the heater 24 to achieve the purpose of preheating the temperature inside the welding box 18. The conversion valve 23 is connected to the welding box 18 through an air inlet pipe 25. An air pump 26 is fixedly connected to the welding box 18 at one side away from the air inlet pipe 25 and located at the top of the cover plate 13. The air pump 26 and the welding box 18 are connected through a connecting pipe 27. A storage box 28 is fixedly connected to the top of the cover plate 13. The metal fume is recycled and processed through the storage box 28 to prevent it from causing harm to the outside. An exhaust box 29 is fixedly connected to the top of the storage box 28. The neutralized exhaust gas is collected through the exhaust box 29 for subsequent further processing. A fixed frame 30 connected to the storage box 28 is fixedly connected to one side of the exhaust box 29. The fixed frame 30 is connected to the air pump 26 through an air collecting pipe 43. A scraping component for filtering and collecting metal fume in the exhaust gas is arranged inside the fixed frame 30. The welding assembly is used to slide and transport the pins and press them down with power to complete the welding work. The welding assembly includes two second fixed plates 46 fixedly connected to the top of the base 1 and a threaded rod 47 rotatably connected between the two second fixed plates 46. A second guide rod 48 is fixedly connected between the two second fixed plates 46 and located on one side of the threaded rod 47. A slider 49 is threadedly sleeved on the threaded rod 47 and slidably connected to the second guide rod 48. A rotating motor 50 is fixedly connected to one side of the slider 49. An electric telescopic rod 51 is fixedly connected to the bottom of the rotating motor 50. A presser 52 is fixedly connected to the bottom of the electric telescopic rod 51. A second motor 53 is fixedly connected to one side of a second fixed plate 46. The driving end of the second motor 53 is fixedly connected to the threaded rod 47. In this embodiment, the air pump 26 is started to extract air from the inside of the second air box 21 to the inside of the welding box 18. At this time, the heater 24 preheats the shielding gas flowing out of the shunt pipe 22 in the second air box 21, and then sends it to the inside of the welding box 18 through the air inlet pipe 25. The inside of the welding box 18 is gradually filled with the heated shielding gas, which can not only preheat and control the temperature of the welding area inside the welding box 18 as a whole, but also protect the welding process through the shielding gas. Then, the conversion valve 23 is opened. At this time, the air pump 26 extracts the neutralizing gas that can neutralize the harmful gas from the inside of the first air box 20 and sends it to the inside of the welding box 18 through the air inlet pipe 25, so as to prevent the harmful gas to be generated during welding in advance; At the same time, the second motor 53 is started, the threaded rod 47 rotates, and the slider 49 on the threaded rod 47 is able to slide along the second guide rod 48. The rotating motor 50 rotates and drives the presser 52 to rotate and thread the pin through its internal thread. At this time, the upper electrode and the pin are in contact with each other, and then the electric telescopic rod 51 pushes the presser 52 through the through hole 19 to the welding hole 17 to press down the feeding blank to weld. After welding is completed, the air pump 26 continues to extract air from the inside of the welding box 18, so as to transport the exhaust gas inside the welding box 18 to the inside of the exhaust box 29, and then the exhaust gas generated by welding is recovered and processed; Furthermore, an upper electrode is provided inside the presser 52, and a thread matching the pin is provided on the inner wall of the presser 52, so that the pin can be quickly fixed by threading it. Then, the pin and the stainless steel ruler blank are connected with positive and negative high voltage by a welding machine. After the two are in contact, the 0.9mm small shaft at the bottom of the pin instantly melts and is welded to the ruler blank to achieve a welding connection. Embodiment 1

[0021] Further, see Figure 4-Figure 5 Compared with the first embodiment, in this embodiment, the interior of the fixed box 2 is rotatably connected with the first gear 3, the interior of the fixed box 2 is rotatably connected with the second gear 4 on one side close to the first gear 3, the top of the second gear 4 is fixedly connected with a fan-shaped tooth 5, the interior of the fixed box 2 is fixedly connected with a fixed rod 6, a tooth plate 7 is slidably connected to the fixed rod 6, a spring 8 is fixedly connected between the tooth plate 7 and the inner wall of the fixed box 2, a fixed block 9 fixedly connected to the tooth plate 7 is slidably provided at the bottom of the fixed box 2, two push rods 10 are fixedly connected to one side of the fixed block 9, and a push block 11 is fixedly connected to the side of the two push rods 10 away from the fixed block 9, the first gear 3 is fixedly connected to the driving end of the first motor 12, and the first gear 3 is transmission-connected with a grinding component for synchronously grinding the oil stains and oxide layers in the welding area of ​​the ruler blank.

[0022] The grinding assembly includes a first bevel gear 14 rotatably connected to the top of the cover plate 13, the first bevel gear 14 is connected to the first gear 3 via a synchronous belt 15, a grinding wheel 16 rotatably connected inside the cover plate 13 and fixedly connected to the first bevel gear 14, and a lower electrode 44 is fixedly connected inside the cover plate 13 and located on the base 1.

[0023] In this embodiment, the first motor 12 drives the first gear 3 to rotate, and the first gear 3 drives the second gear 4 to rotate synchronously. At this time, the sector teeth 5 on the second gear 4 rotate to push the tooth plate 7 to slide along the fixed rod 6, and the intermittent compression of the spring 8 can push the tooth plate 7 to drive the push block 11 to push the ruler blank into the cover plate 13 in a timely manner to feed the material.

[0024] At the same time, the first motor 12 drives the first bevel gear 14 to rotate by driving the synchronous belt 15, and then drives the grinding wheel 16 thereon to rotate. The grinding wheel 16 can rotate and grind the welding surface of the ruler blank during the pushing gap of the push block 11 to eliminate the oxide layer and oil stains. Embodiment 2

[0025] Reference Figure 6-Figure 7 Compared with the first and second embodiments, the cleaning assembly in this embodiment includes two first fixed plates 32 fixedly connected to the cover plate 13, a reciprocating screw 33 is rotatably connected between the two first fixed plates 32, a first guide rod 34 is fixedly connected between the two first fixed plates 32 and below the reciprocating screw 33, a second bevel gear 35 fixedly connected to the reciprocating screw 33 is rotatably connected to the side of the first fixed plate 32 close to the first bevel gear 14, a screw nut 36 is threadedly sleeved on the reciprocating screw 33, a cleaning brush 37 fixedly connected to the screw nut 36 is slidably connected to the first guide rod 34, and a cleaning groove 38 is provided on the side of the cover plate 13 close to the cleaning brush 37.

[0026] The scraping assembly includes a filter plate 31 fixedly connected to the inside of the fixed frame 30 and located on the exhaust box 29, a connecting rod 39 fixedly connected to one side of the screw nut 36, two synchronization rods 40 fixedly connected to the connecting rod 39 and slidably connected to the fixed frame 30, a cleaning scraper 41 fixedly connected to one side of the two synchronization rods 40 and located inside the fixed frame 30, and a collecting hole 42 connected to the fixed frame 30 is opened on the top of the storage box 28 close to the fixed frame 30.

[0027] In this embodiment, the rotation of the first bevel gear 14 drives the second bevel gear 35 to rotate, and the second bevel gear 35 drives the reciprocating screw 33 to rotate. The reciprocating screw 33 rotates to drive the screw nut 36 thereon to drive the cleaning brush 37 to slide back and forth along the first guide rod 34, thereby passing through the cleaning groove 38 to clean the debris on the surface of the polished ruler blank.

[0028] Furthermore, the screw nut 36 drives the synchronization rod 40 to slide back and forth along the fixed frame 30 through the connecting rod 39, and the cleaning scraper 41 can be pushed by the synchronization rod 40 to scrape back and forth along the surface of the filter plate 31, so that the metal smoke on the filter plate 31 can be scraped and collected by the cleaning scraper 41.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An efficient welding process for a digital angle ruler blank and a pin, characterized in that: The following steps are involved: S1. Prepare materials: ensure that the material, size and specifications of the ruler and pin meet the design requirements, and clean the welding parts to remove impurities such as oil, rust and oxides to ensure welding quality; S2. Prepare equipment: Select appropriate welding equipment, such as arc welding machine, resistance welding machine, and then select appropriate welding parameters, such as welding current, voltage and welding speed, according to the characteristics and thickness of the welding material; S3. Positioning and clamping: Use a special fixture or positioning device to accurately align the ruler blank and the pin to ensure that the gap at the welding part is uniform and meets the design requirements. The clamping fixture should be firm and reliable to prevent the ruler blank and the pin from moving or deforming during welding; S4, preheating: preheating the inert protective gas through the heater so that the protective gas preheats the entire interior and the temperature is uniform; S5. Welding work: Fix the pin and the stainless steel ruler in precise positions to ensure that they can contact accurately in subsequent operations. Use the welding machine to connect the pin and the stainless steel ruler with positive and negative high voltage. When the welding machine is started and the pin contacts the ruler, the 0.9mm thin shaft at the bottom of the pin quickly reaches the melting point and changes from solid to liquid due to the high heat brought by the high voltage conduction, and fuses with the stainless steel ruler, thus playing the role of welding connection very firmly. In addition, during the welding process, the welding parameters should be strictly controlled to ensure the quality of the weld. After the welding is completed, the spatter and welding slag on the weld surface should be cleaned in time for subsequent inspection and treatment; S6. Weld inspection: Use special inspection tools to conduct visual inspection and dimension measurement of welds to ensure that the welds are free of defects such as cracks, slag inclusions, and lack of fusion, and that the dimensions meet the design requirements. If defects are found in the welds or the dimensions do not meet the requirements, they should be corrected and repaired in a timely manner; S7. Subsequent processing: stress relief treatment is performed on the welding parts to reduce welding stress and prevent welding deformation. Secondly, anti-corrosion treatment is performed on the welding parts to improve their corrosion resistance and service life. Then, the welded digital angle ruler is assembled and debugged to ensure that its function and performance meet the design requirements for subsequent use.

2. An efficient welding device for a digital angle ruler blank and a pin, comprising a welding assembly, a pushing assembly and a ventilation assembly, characterized in that: The pushing component is used to push the ruler blank continuously and regularly, and the pushing component comprises a base (1), a fixing box (2) fixedly connected to the top of the base (1), and a first motor (12) fixedly connected to the top of the fixing box (2); A loading box (45) is fixedly connected to the bottom of the base (1); The ventilation assembly is used to neutralize harmful gases generated during welding and to collect waste gases, and comprises a cover plate (13) fixedly connected to the top of the base (1), a welding hole (17) provided on one side of the cover plate (13), and a welding box (18) fixedly connected to the top of the cover plate (13) and located above the welding hole (17); The welding assembly is used to slide and transport the pin and press it down by power to complete the welding work. The welding assembly comprises two second fixing plates (46) fixedly connected to the top of the base (1) and a threaded rod (47) rotatably connected between the two second fixing plates (46). A second guide rod (48) is fixedly connected between the two second fixing plates (46) and located on one side of the threaded rod (47). A slider (49) is threadedly sleeved on the threaded rod (47) and is slidably connected to the second guide rod (48). A rotating motor (50) is fixedly connected to one side of the slider (49). An electric telescopic rod (51) is fixedly connected to the bottom of the rotating motor (50). A presser (52) is fixedly connected to the bottom of the electric telescopic rod (51). A second motor (53) is fixedly connected to one side of one of the second fixing plates (46). The driving end of the second motor (53) is fixedly connected to the threaded rod (47).

3. The high-efficiency welding device for a digital angle ruler blank and a pin according to claim 2 is characterized in that: The top of the welding box (18) is provided with a through hole (19); the top of the base (1) is fixedly connected to a first air box (20) on a side close to the welding box (18); the top of the first air box (20) is fixedly connected to a second air box (21); one side of the first air box (20) and the second air box (21) is fixedly connected to a shunt pipe (22); a conversion valve (23) is fixedly connected to the shunt pipe (22); a side of the shunt pipe (22) close to the second air box (21) is fixedly connected to a heater (24); the conversion valve (23) is connected to the welding box (18) via an air inlet pipe (25); the welding box (18) is away from the shunt pipe (23). An air pump (26) is fixedly connected to one side of the air inlet pipe (25) and located at the top of the cover plate (13); the air pump (26) is connected to the welding box (18) via a connecting pipe (27); a storage box (28) is fixedly connected to the top of the cover plate (13); an exhaust gas box (29) is fixedly connected to the top of the storage box (28); a fixed frame (30) in communication with the storage box (28) is fixedly connected to one side of the exhaust gas box (29); the fixed frame (30) is connected to the air pump (26) via an air collecting pipe (43); a scraping assembly for filtering and collecting metal smoke in the exhaust gas is arranged inside the fixed frame (30).

4. The high-efficiency welding device for a digital angle ruler blank and a pin according to claim 2 is characterized in that: The fixed box (2) is rotatably connected to a first gear (3) inside, and a second gear (4) is rotatably connected to a side of the fixed box (2) close to the first gear (3). A fan-shaped tooth (5) is fixedly connected to the top of the second gear (4). A fixed rod (6) is fixedly connected to the inside of the fixed box (2). A tooth plate (7) is slidably connected to the fixed rod (6). A spring (8) is fixedly connected between the tooth plate (7) and the inner wall of the fixed box (2). A fixed block (9) fixedly connected to the tooth plate (7) is slidably provided at the bottom of the fixed box (2). Two push rods (10) are fixedly connected to one side of the fixed block (9). A push block (11) is fixedly connected to the side of the two push rods (10) away from the fixed block (9). The first gear (3) is fixedly connected to a driving end of a first motor (12). A grinding component for synchronously grinding away oil stains and oxide layers in a welding area of ​​a ruler blank is transmission-connected to the first gear (3).

5. The high-efficiency welding device for a digital angle ruler blank and a pin according to claim 4 is characterized in that: The grinding assembly comprises a first bevel gear (14) rotatably connected to the top of the cover plate (13); the first bevel gear (14) and the first gear (3) are connected via a synchronous belt (15); a grinding wheel (16) fixedly connected to the first bevel gear (14) is rotatably connected inside the cover plate (13); a lower electrode (44) is fixedly connected inside the cover plate (13) and located on the base (1); and a cleaning assembly for synchronously cleaning grinding debris on the surface of the ruler blank after grinding is provided on one side of the first bevel gear (14) and located on the top of the cover plate (13).

6. The high-efficiency welding device for a digital angle ruler blank and a pin according to claim 2 is characterized in that: An upper electrode is arranged inside the presser (52), and a thread matching the pin is provided on the inner wall of the presser (52).

7. The high-efficiency welding device for a digital angle ruler blank and a pin according to claim 5 is characterized in that: The cleaning assembly comprises two first fixed plates (32) fixedly connected to the cover plate (13), a reciprocating screw (33) being rotatably connected between the two first fixed plates (32), a first guide rod (34) being fixedly connected between the two first fixed plates (32) and located below the reciprocating screw (33), a second bevel gear (35) being rotatably connected to the reciprocating screw (33) on one side of the first fixed plate (32) close to the first bevel gear (14), a screw nut (36) being threadedly sleeved on the reciprocating screw (33), a cleaning brush (37) being slidably connected to the first guide rod (34) and being fixedly connected to the screw nut (36), and a cleaning groove (38) being provided on the side of the cover plate (13) close to the cleaning brush (37).

8. The high-efficiency welding device for a digital angle ruler blank and a pin according to claim 3 is characterized in that: The scraping assembly comprises a filter plate (31) fixedly connected to the interior of a fixed frame (30) and located on an exhaust gas box (29); a connecting rod (39) is fixedly connected to one side of the lead screw nut (36); two synchronization rods (40) are fixedly connected to the connecting rod (39) and are slidably connected to the fixed frame (30); a cleaning scraper (41) is fixedly connected to one side of the two synchronization rods (40) and located inside the fixed frame (30); and a collecting hole (42) is provided on a side of the top of the storage box (28) close to the fixed frame (30) and is connected to the fixed frame (30).

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