A positioning fixture for machining an automotive valve body

Abstract

The present invention relates to the technical field of automotive valve body processing. Specifically disclosed is a positioning fixture for processing an automotive valve body, which comprises a base. A support frame is arranged on the base, and a clamping seat is rotatably arranged on the support frame. A fixed seat is arranged on one side of the clamping seat, and a clamping seat is slidably arranged on the other side. A first positioning component is arranged on the fixed seat, and a second positioning component is arranged on the clamping seat. A pressing component for pressing and fixing the automotive valve body is arranged on the clamping seat. A linkage component for driving the clamping seat to clamp and fix the automotive valve body and driving the pressing component to press and fix is arranged on the clamping seat. A driving component for driving the clamping seat to rotate is arranged on the base. The advantage of the present invention is that the clamping seat is driven by the linkage component to clamp and fix the automotive valve body, and the pressing component is driven to press and fix the automotive valve body, so that the automotive valve body with an irregular curved surface can be fixed and then processed.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive valve body processing, and particularly to a positioning fixture for automotive valve body processing. Background Art

[0002] At present, with the rapid development of the automotive industry, the level of automotive manufacturing is also continuously improving, and the requirements for the automotive manufacturing industry are also getting higher and higher. For example, high quality and high efficiency are required in the processing of parts. The EGR valve is a mechatronic product installed on a gasoline engine to control the amount of exhaust gas recirculation fed back to the intake system. It is usually located on the right side of the intake manifold, near the throttle body, and is connected to it by a short metal pipe leading to the exhaust manifold. Its function is to control the amount of exhaust gas entering the intake manifold so that a certain amount of exhaust gas flows into the intake manifold for recirculation. The EGR valve is a very important and key component in the exhaust gas recirculation device. In the actual production of the EGR valve body and other automotive engine valve bodies, matching tooling fixtures are required to assist in the processing to achieve high-quality and high-efficiency processing.

[0003] The processing of the valve body mainly involves drilling and grinding and polishing operations. During the processing, it is necessary to position and fix the valve body blank. However, because various holes are located in different cross-sections that are not parallel to each other, and the outer shape of the automotive valve body is mostly arc-shaped or irregular concave and convex curved surfaces, it is not very convenient to clamp or fix the valve body during the processing. Moreover, when fixing the automotive valve body, it is necessary to operate different clamping or fixing devices separately to fix the valve body, and the operation of clamping or fixing the valve body is inconvenient and the work efficiency is low. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the present application provides a positioning fixture for automotive valve body processing.

[0005] A positioning fixture for automotive valve body processing provided by the present application adopts the following technical solutions:

[0006] An automotive valve body processing positioning fixture, comprising a base, a support frame is arranged on the base, a clamping seat is rotatably arranged on the support frame, a fixed seat is arranged on one side of the clamping seat, and a clamping seat is slidably arranged on the other side. A first positioning component is arranged on the fixed seat, the first positioning component includes a plurality of first positioning rods, and the plurality of first positioning rods are evenly arranged along the length direction of the fixed seat. One end of the first positioning rod is provided with a first spring, and the other end of the first spring is connected to the fixed seat. A first limiting rod for fixing the plurality of first positioning rods is arranged on the fixed seat. A second positioning component is arranged on the clamping seat, the second positioning component includes a plurality of second positioning rods, and the plurality of second positioning rods are evenly arranged along the length direction of the clamping seat. One end of the second positioning rod is provided with a second spring, and the other end of the second spring is connected to the clamping seat. A second limiting rod for fixing the plurality of second positioning rods is arranged on the clamping seat. A pressing component for pressing and fixing the automotive valve body is arranged on the clamping seat. A linkage component for driving the clamping seat to clamp and fix the automotive valve body and driving the pressing component to press and fix the automotive valve body is arranged on the clamping seat. A driving component for driving the clamping seat to rotate is arranged on the base.

[0007] By adopting the above technical solution, the automotive valve body is placed on the clamping seat, and then the clamping seat is driven by the linkage component to move towards the fixed seat, so as to facilitate the clamping and positioning of the automotive valve body. After the clamping seat and the fixed seat clamp and position the automotive valve body, the linkage component will drive the pressing component to press and fix the automotive valve body, so that the staff can clamp and position the automotive valve body only through the linkage component, which is convenient for the staff to operate and has high production efficiency.

[0008] Optionally, the first limiting rod is slidably arranged along the length direction of the fixed seat itself. A plurality of arc-shaped first clamping blocks are evenly arranged at the bottom of the first limiting rod. The plurality of first clamping blocks correspond to the plurality of first positioning rods one by one, and the plurality of first clamping blocks are all slidably embedded in the interior of the fixed seat. The second limiting rod is slidably arranged along the length direction of the clamping seat itself. A plurality of arc-shaped second clamping blocks are evenly arranged at the bottom of the second limiting rod. The plurality of second clamping blocks correspond to the plurality of second positioning rods one by one, and the plurality of second clamping blocks are all slidably embedded in the interior of the clamping seat. A power component for driving the first limiting rod and the second limiting rod to move synchronously is arranged on the clamping seat.

[0009] By adopting the above technical solution, when the first positioning rod and the second positioning rod clamp and fix the automotive valve body, the first limiting rod and the second limiting rod are driven to move simultaneously by the power component, so as to fix the current positions of the first positioning rod and the second positioning rod, and improve the stability when clamping and fixing the automotive valve body.

[0010] Optionally, the power assembly includes a driving rod, a fixed rod and two sliding rods. The two sliding rods are respectively located on both sides of the clamping seat, and both sliding rods are slidably arranged on the clamping seat in the vertical direction. The two ends of the driving rod are respectively connected to the tops of the two sliding rods. A first driven block is fixedly arranged at one end of the first limiting rod close to the driving rod. A first return spring is arranged at the other end of the first limiting rod. The end of the first spring away from the first limiting rod is connected to the fixed seat. A second driven block is fixedly arranged at one end of the second limiting rod close to the driving rod. A second return spring is installed at the other end of the second limiting rod. The end of the second return spring away from the second limiting rod is connected to the clamping seat. The inclined surface of the first driven block is slidably connected to the inclined surface of the driving rod. The inclined surface of the second driven block is slidably connected to the inclined surface of the driving rod. The two ends of the fixed rod are respectively connected to the bottoms of the two sliding rods.

[0011] By adopting the above technical solution, the power assembly can drive the first limiting rod to fix the positions of multiple first positioning rods, and at the same time drive the second limiting rod to fix the positions of multiple second positioning rods, thereby improving the stability when clamping and fixing the automotive valve body.

[0012] Optionally, the pressing assembly includes two pressing rods. The two pressing rods are both slidably arranged on the clamping seat in the vertical direction. A pressing block for pressing and fixing the automotive valve body is fixedly arranged at the top of the pressing rod. A rotating gear is coaxially arranged at the bottom of the pressing rod. An installation frame is fixedly arranged at the bottom of the clamping seat. An installation chute is opened in the installation frame in the vertical direction. An installation slider is slidably arranged in the installation chute. A support slide rail is arranged on the installation slider in the horizontal direction. A third return spring is installed at the bottom of the installation slider. The other end of the third return spring is connected to the bottom of the installation frame. An installation rack is slidably arranged in the support slide rail in the horizontal direction. The rotating gear is meshed with the installation rack. A fourth return spring is arranged at one end of the installation rack. The other end of the fourth return spring is connected to the support slide rail. An abutting block is arranged at the other end of the installation rack. A triangular second driving block is slidably arranged on the installation frame in the vertical direction. The abutting block is slidably connected to the side wall of the second driving block. A fifth return spring is arranged on the installation frame. One end of the fifth return spring is connected to the bottom of the second driving block. Pressure blocks are arranged on both sides of the top of the second driving block. A receiving block is arranged at one end of the support slide rail close to the second driving block. The pressure block is used for pressing the receiving block.

[0013] By adopting the above technical solution, the second driving block will first drive the pressing rod to rotate, so as to drive the pressing block to rotate to the top of the automotive valve body, and then drive the pressing rod and the pressing block as a whole to move in the vertical direction, so as to press and fix the automotive valve body.

[0014] Optionally, the linkage assembly includes a rotating rod and a limiting block. The rotating rod is rotatably arranged at the bottom of the clamping seat through a rotating shaft. One end of the rotating rod is hinged with a first connecting rod, and the other end of the first connecting rod is hinged with the bottom of the clamping seat. A gear is coaxially and fixedly arranged on the rotating shaft. A limiting sliding groove is formed in the clamping seat. The limiting block is slidably arranged in the limiting sliding groove. A first mounting rod is arranged on the limiting block. A first driving rack is arranged at the end of the first mounting rod far away from the limiting block. The first driving rack meshes with the gear. A limiting sliding rail is fixedly arranged at the bottom of the mounting frame. A second driving rack is slidably arranged in the limiting sliding rail. A second mounting rod is arranged at the end of the second driving rack close to the limiting block. A third mounting rod is arranged at the top of the second mounting rod along the vertical direction. The top of the third mounting rod is connected with the limiting block. A connecting shaft is rotatably mounted on the mounting frame. A first connecting gear is coaxially arranged at one end of the connecting shaft, and a second connecting gear is coaxially arranged at the other end. The first connecting gear meshes with the second driving rack. A lifting rack is fixedly arranged on the second driving block along the vertical direction. The lifting rack meshes with the second connecting gear. A driving member is arranged on the mounting frame. The driving member is connected with the end of the second driving rack far away from the limiting block for driving the second driving rack to move. An installation sliding rail is arranged at the bottom of the clamping seat. An installation block is slidably arranged in the installation sliding rail. A tooth block is arranged on the installation block. A fifth return spring is arranged on the installation block. The other end of the fifth return spring is connected with the installation sliding rail. A locking rod is arranged on the first mounting rod. A push rod is arranged at the end of the installation block far away from the fifth return spring. The locking rod is slidably connected with the push rod. A connecting block is fixedly mounted on the fixed rod. The connecting block is connected with the slider.

[0015] By adopting the above technical solution, the clamping seat can be first driven to move towards the fixed seat, so as to clamp and position the automotive valve body. Then, the current position of the clamping seat is fixed. Next, the pressing assembly is driven to press and fix the automotive valve body, and at the same time, the power assembly is driven, so as to fix the positions of multiple first positioning rods and multiple second positioning rods. The operation is simple and convenient.

[0016] Optionally, the driving member is an electric push rod. The telescopic rod of the electric push rod is connected with the end of the second driving rack far away from the limiting block.

[0017] By adopting the above technical solution, when the electric push rod is started, the telescopic rod of the electric push rod extends, so as to drive the second driving rack, the second mounting rod, the limiting block, the first connecting rod and the first driving rack to move synchronously.

[0018] Optionally, the driving assembly includes a driving disk which is rotatably arranged on the support frame and connected to the clamping seat. A plurality of fixing teeth are uniformly arranged on the driving disk along its circumferential direction. A fixing frame is arranged on the base, and a fixing slide rail is arranged on the fixing frame. A driving slider is slidably arranged on the fixing slide rail. Two driving teeth are arranged on the driving slider, and the two driving teeth are respectively located at both ends of the driving slider. A power disk is rotatably arranged on the fixing frame. A second connecting rod is hinged on the power disk, and the other end of the second connecting rod is hinged to the driving slider. A driving shaft is coaxially arranged on the power disk, and a worm gear is coaxially arranged on the driving shaft. A worm is rotatably arranged on the fixing frame, and the worm is meshed with the worm gear. A cross-shaped connecting groove is arranged at one end of the worm.

[0019] By adopting the above technical solution, the driving disk can be driven to rotate, so that the clamping seat rotates by a certain angle and self-locks the current inclination angle, which is convenient for the staff to carry out processing.

[0020] Optionally, an installation through groove is arranged on the limiting block. The first installation rod is slidably arranged in the installation through groove. A plurality of positioning holes are arranged on the first installation rod along its length direction. A fixing screw is threadedly connected to the limiting block, and the bottom of the fixing screw is inserted into the positioning hole.

[0021] By adopting the above technical solution, the distance between the clamping seat and the fixing seat can be adjusted, which is convenient for fixing automobile valve bodies with different sizes within a certain range.

[0022] Optionally, a butting rod is fixedly arranged on the top of the fixing seat through a screw. A butting seat is slidably arranged on the butting rod. A third spring is arranged on the butting seat, and the other end of the third spring is connected to the butting rod. A pushing rod is fixedly installed on the top of the clamping seat through a screw.

[0023] By adopting the above technical solution, it is convenient for the staff to assist in fixing the top position of the automobile valve body and improve the installation and fixing effect of the automobile valve body.

[0024] Optionally, a slag discharge through hole is arranged on the clamping seat.

[0025] By adopting the above technical solution, the slag discharge through hole is convenient for discharging the waste slag generated during the processing of the automobile valve body.

[0026] The present invention has the following advantages:

[0027] 1. By arranging the fixing seat, the clamping seat, the first positioning component, the second positioning component and the pressing component, the automobile valve body with an irregular curved surface can be clamped and fixed and pressed and fixed, so that the automobile valve body can be fixed on the clamping seat for production and processing.

[0028] 2. By setting up the linkage component, the clamping seat can be first driven to move towards the fixed seat, so as to clamp and position the automotive valve body. Then, the current position of the clamping seat is fixed, and the pressing component is driven to press and fix the automotive valve body, and at the same time, the power component is driven to fix the positions of multiple first positioning rods and multiple second positioning rods. The operation is simple and convenient.

[0029] 3. By setting up the driving component, the driving disc can be driven to rotate, thereby making the clamping seat rotate and self-locking the current inclination angle of the clamping seat, which is convenient for the staff to carry out processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic structural diagram of the whole of the present invention;

[0031] Figure 2 is a schematic installation structure diagram of the pressing component and the linkage component of the present invention;

[0032] Figure 3 is a schematic installation structure diagram of the driving component of the present invention;

[0033] Figure 4 is a schematic installation structure diagram of the power component of the present invention;

[0034] Figure 5 is a schematic installation structure diagram of the first clamping block and the second clamping block;

[0035] Figure 6 is a schematic overall installation structure diagram of the linkage component of the present invention;

[0036] Figure 7 is a schematic installation structure diagram of the connecting block and the fixing rod of the present invention;

[0037] Figure 8 is a schematic installation structure diagram of the connecting shaft, the first connecting gear and the second connecting gear of the present invention;

[0038] Figure 9 is a schematic installation structure diagram of the installation slide rail, the tooth block and the locking rod of the present invention;

[0039] Figure 10 is a schematic installation structure diagram of the fixed slide rail and the driving slider of the present invention;

[0040] In the figure: 1, base; 11, support frame; 12, clamping seat; 121, slag discharge through hole; 13, fixed seat; 131, first positioning assembly; 1311, first positioning rod; 1312, first spring; 132, first limiting rod; 133, first clamping block; 134, abutting rod; 135, abutting seat; 1351, third spring; 136, first return spring; 14, clamping seat; 141, second positioning assembly; 1411, second positioning rod; 1412, second spring; 142, second limiting rod; 143, second clamping block; 144, second return spring; 145, pushing rod; 2, pressing assembly; 21, pressing rod; 22, pressing block; 23, rotating gear; 24, mounting frame; 241, installation slide; 242, installation slider; 243, third return spring; 25, support rail; 251, installation rack; 252, fourth return spring; 253, abutment block; 26, second drive block; 261, fifth return spring; 27, pressure block; 28, receiving block; 3, linkage assembly; 31, rotating rod; 311, first connecting rod; 312, gear; 32, limit block; 321, first installation rod; 322, first drive rack; 33, limit slide; 34, limit rail; 341, second drive rack; 342, second installation rod; 343, third installation rod; 35, connecting shaft; 351, first connecting gear; 352, second connecting gear; 36, lifting Rack; 37, driving member; 38, mounting rail; 381, mounting block; 382, ​​tooth block; 383, fifth return spring; 384, locking rod; 385, push rod; 39, connecting block; 4, driving assembly; 41, driving disk; 42, fixed tooth; 43, fixed frame; 44, fixed rail; 45, driving slider; 451, driving tooth; 46, power disk; 461, second connecting rod; 462, driving shaft; 463, worm gear; 464, worm; 465, connecting groove; 5, power assembly; 51, driving rod; 52, fixed rod; 53, slide rod; 54, first driven block; 55, second driven block; 6, mounting through groove; 61, positioning hole; 62, fixing screw; 7, automobile valve body. DETAILED DESCRIPTION

[0041] The present invention is further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0042] like Figures 1 to 3As shown in the figure, an automotive valve body processing positioning fixture includes a base 1. Along the vertical direction on the base 1, a support frame 11 is fixedly installed. A clamping seat 12 is rotatably installed on the support frame 11. On one side of the top of the clamping seat 12, a fixed seat 13 is fixedly installed, and on the other side, a clamping seat 14 is slidably installed. A first positioning component 131 is installed on the fixed seat 13, and a second positioning component 141 is installed on the clamping seat 14. A pressing component 2 for pressing and fixing the automotive valve body 7 is installed on the clamping seat 12. A linkage component 3 for driving the clamping seat 14 to move towards the fixed seat 13 to press and fix the automotive valve body 7 and for driving the pressing component 2 to press and fix the automotive valve body 7 is installed on the clamping seat 12. A driving component 4 for driving the clamping seat 12 to rotate is installed on the base 1. The first positioning component 131 includes multiple first positioning rods 1311. The multiple first positioning rods 1311 are evenly arranged along the length direction of the fixed seat 13, and the first positioning rods 1311 are slidably installed on the fixed seat 13. One end of the first positioning rod 1311 abuts against the outer wall of the automotive valve body 7, and the other end is installed with a first spring 1312. The other end of the first spring 1312 is connected to the fixed seat 13. The second positioning component 141 includes multiple second positioning rods 1411. The multiple second positioning rods 1411 are evenly arranged along the length direction of the clamping seat 14, and the second positioning rods 1411 are slidably installed on the clamping seat 14. One end of the second positioning rod 1411 abuts against the outer wall of the automotive valve body 7, and the other end of the second positioning rod 1411 is installed with a second spring 1412. The other end of the second spring 1412 is connected to the clamping seat 14. During use, the automotive valve body 7 is placed on the clamping seat 12, and then the linkage component 3 is used to drive the clamping seat 14 to move towards the fixed seat 13. The multiple first positioning rods 1311 and the multiple second positioning rods 1411 will respectively abut against the outer wall of the automotive valve body 7. Since the bottom of the automotive valve body 7 is mostly in the shape of a circular ring or an ellipse, etc., the first spring 1312 and the second spring 1412 will be compressed. The first springs 1312 at different positions will be compressed by different lengths, and the second springs 1412 at different positions will also be compressed by different lengths. After being compressed, the first spring 1312 and the second spring 1412 have a tendency to return to their original lengths, so that the multiple first positioning rods 1311 and the multiple second positioning rods 1411 clamp and fix the automotive valve body 7, thus facilitating the clamping and positioning of the automotive valve body 7 with a curved surface. When the clamping seat 14 and the fixed seat 13 clamp and position the automotive valve body 7, the linkage component 3 will drive the pressing component 2 to press and fix the automotive valve body 7, so that the staff can clamp and position the automotive valve body 7 only through the linkage component 3. The operation of the staff is convenient and the production efficiency is relatively high.

[0043] As Figure 3 , Figure 4As shown, the first limiting rod 132 is slidably installed along the length direction of the fixed seat 13 itself. A plurality of arc-shaped first clamping blocks 133 are evenly installed at the bottom of the first limiting rod 132. The plurality of first clamping blocks 133 correspond to the plurality of first positioning rods 1311 one by one, and the plurality of first clamping blocks 133 are all slidably embedded inside the fixed seat 13. The second limiting rod 142 is slidably installed along the length direction of the clamping seat 14 itself. A plurality of arc-shaped second clamping blocks 143 are evenly installed at the bottom of the second limiting rod 142. The plurality of second clamping blocks 143 correspond to the plurality of second positioning rods 1411 one by one, and the plurality of second clamping blocks 143 are all slidably embedded inside the clamping seat 14. A power assembly 5 for driving the first limiting rod 132 and the second limiting rod 142 to move synchronously is installed on the clamping seat 12. During use, the linkage assembly 3 drives the clamping seat 14 to move towards the fixed seat 13, so that the clamping seat 14 and the fixed seat 13 clamp and fix the automotive valve body 7. When the automotive valve body 7 is clamped and fixed, the power assembly 5 drives the first limiting rod 132 and the second limiting rod 142 to move synchronously. During the movement of the first limiting rod 132, it will drive the plurality of arc-shaped first clamping blocks 133 to move synchronously, so that the first clamping blocks 133 abut against the first positioning rods 1311, and further the first clamping blocks 133 squeeze and fix the current positions of the first positioning rods 1311. The first positioning rods 1311 will be fixed on the fixed seat 13 and are difficult to continue sliding. At the same time, during the movement of the second limiting rod 142, it will drive the plurality of arc-shaped second clamping blocks 143 to move synchronously, so that the second clamping blocks 143 abut against the second positioning rods 1411, and further the second clamping blocks 143 squeeze and fix the current positions of the second positioning rods 1411. The second clamping blocks 143 will be fixed on the clamping seat 14 and are difficult to continue sliding, so that the fixed seat 13 and the clamping seat 14 can clamp and fix the automotive valve body 7 more stably.

[0044] As Figures 3 to 8As shown, the power assembly 5 includes a driving rod 51, a fixing rod 52 and two sliding rods 53. The two sliding rods 53 are respectively located on both sides of the clamping seat 12, and both sliding rods 53 are slidably arranged vertically through the clamping seat 12. Both ends of the driving rod 51 are connected to the tops of the two sliding rods 53. One end of the first limiting rod 132 close to the driving rod 51 is fixedly provided with a first driven block 54, and the other end of the first limiting rod 132 is provided with a first return spring 136. One end of the first spring 1312 away from the first limiting rod 132 is connected to the fixing seat 13. One end of the second limiting rod 142 close to the driving rod 51 is fixedly installed with a second driven block 55, and the other end of the second limiting rod 142 is installed with a second return spring 144. One end of the second return spring 144 away from the second limiting rod 142 is connected to the clamping seat 14. The inclined surface of the first driven block 54 is slidably connected to the inclined surface of the driving rod 51, and the inclined surface of the second driven block 55 is slidably connected to the inclined surface of the driving rod 51. Both ends of the fixing rod 52 are connected to the bottoms of the two sliding rods 53. When in use, after the automotive valve body 7 is placed on the clamping seat 12, the clamping seat 14 is driven to move towards the direction close to the fixing seat 13, so as to clamp and fix the automotive valve body 7. During the movement of the clamping seat 14, the second driven block 55 will move synchronously, and then the fixing rod 52 is driven to move vertically, so as to drive the two sliding rods 53 and the driving rod 51 to move synchronously. During the vertical movement of the driving rod 51, the first driven block 54 and the second driven block 55 will be pushed to move horizontally, so as to drive the first limiting rod 132 and the second limiting rod 142 to move horizontally synchronously. During the movement of the first limiting rod 132, the first clamping block 133 will be driven to move, so as to fix the position of the first positioning rod 1311. During the movement of the second limiting rod 142, the second clamping block 143 will be pushed to move, so as to fix the position of the second positioning rod 1411.

[0045] As Figures 4 to 9As shown, the pressing assembly 2 includes two pressing rods 21. Both pressing rods 21 are slidably mounted on the clamping seat 12 along the vertical direction. A pressing block 22 for pressing and fixing the automotive valve body 7 is fixedly mounted on the top of the pressing rod 21. A rotating gear 23 is coaxially and fixedly mounted on the bottom of the pressing rod 21. An installation frame 24 is fixedly mounted on the bottom of the clamping seat 12 along the vertical direction. An installation chute 241 is formed in the installation frame 24 along the vertical direction. An installation slider 242 is slidably mounted in the installation chute 241. A support slide rail 25 is fixedly mounted on the installation slider 242 along the horizontal direction. A third return spring 243 is mounted on the bottom of the installation slider 242. The other end of the third return spring 243 is connected to the bottom of the installation frame 24. An installation rack 251 is slidably mounted in the support slide rail 25 along the horizontal direction. The rotating gear 23 meshes with the installation rack 251. A fourth return spring 252 is mounted on one end of the installation rack 251. The other end of the fourth return spring 252 is connected to the support slide rail 25. A contact block 253 is mounted on the other end of the installation rack 251. A triangular second driving block 26 is slidably mounted on the installation frame 24 along the vertical direction. The contact block 253 is slidably connected to the side wall of the second driving block 26. A fifth return spring 383 is mounted on the installation frame 24 along the vertical direction. The other end of the fifth return spring 383 is connected to the bottom of the second driving block 26. Pressure blocks 27 are mounted on both sides of the top of the second driving block 26. A receiving block 28 is fixedly mounted on one end of the support slide rail 25 close to the second driving block 26. The pressure block 27 is used to press the receiving block 28. During use, the length direction of the pressing block 22 is consistent with the length direction of the clamping seat 14, facilitating the movement of the automotive valve body 7. The second driving block 26 is driven to move along the vertical direction through the linkage assembly 3. During the movement of the second driving block 26, the contact block 253 will slide along its inclined side wall. During the movement of the contact block 253, the installation rack 251 will move along the length direction of the installation slide rail 38, and the third return spring 243 will be compressed. During the movement of the installation rack 251, the rotating gear 23 will be pushed to rotate. During the rotation of the rotating gear 23, the pressing rod 21 will be driven to rotate synchronously, thereby driving the pressing block 22 to rotate to a direction perpendicular to the automotive valve body 7. As the second driving block 26 continues to move along the vertical direction, the pressure block 27 on the second driving block 26 contacts the receiving block 28 and presses the receiving block 28, so that the second driving block 26 will drive the installation slide rail 38 and the installation slider 242 to move synchronously along the vertical direction, thereby driving the pressing rod 21 and the pressing block 22 to move along the vertical direction, and further enabling the pressing block 22 to press and fix the automotive valve body 7.

[0046] As Figure 6 , Figure 7 , Figure 8 and Figure 9As shown, the linkage assembly 3 includes a rotating rod 31 and a limiting block 32. The rotating rod 31 is rotatably installed at the bottom of the clamping seat 12 through a rotating shaft. One end of the rotating rod 31 is hingedly installed with a first connecting rod 311, and the other end of the first connecting rod 311 is hinged to the bottom of the clamping seat 14. A gear 312 is coaxially and fixedly installed on the rotating shaft. A limiting chute 33 is provided on the clamping seat 12, and the length direction of the limiting chute 33 is the same as the length direction of the first positioning rod 1311. The limiting block 32 is slidably installed in the limiting chute 33. A first mounting rod 321 is installed on the limiting block 32, and a first driving rack 322 is installed at the end of the first mounting rod 321 away from the limiting block 32. The first driving rack 322 meshes with the gear 312. A limiting slide rail 34 is fixedly installed at the bottom of the mounting frame 24. A second driving rack 341 is slidably installed in the limiting slide rail 34. A second mounting rod 342 is installed at the end of the second driving rack 341 close to the limiting block 32. A third mounting rod 343 is installed at the top of the second mounting rod 342 along the vertical direction, and the top of the third mounting rod 343 is connected to the limiting block 32. A connecting shaft 35 is rotatably installed on the mounting frame 24. A first connecting gear 351 is coaxially installed at one end of the connecting shaft 35, and a second connecting gear 352 is coaxially installed at the other end. The first connecting gear 351 meshes with the second driving rack 341. A lifting rack 36 is fixedly installed on the second driving block 26 along the vertical direction. The lifting rack 36 meshes with the second connecting gear 352. A driving member 37 is provided on the mounting frame 24. The driving member 37 is connected to the end of the second driving rack 341 away from the limiting block 32 for driving the second driving rack 341 to slide along the length direction of the limiting slide rail 34. A mounting slide rail 38 is fixedly installed at the bottom of the clamping seat 12. A mounting block 381 is slidably installed in the mounting slide rail 38. A tooth block 382 is fixedly installed on the mounting block 381. A fifth return spring 383 is installed on the mounting block 381, and the other end of the fifth return spring 383 is connected to the mounting slide rail 38. A locking rod 384 is fixedly installed on the first mounting rod 321. A push rod 385 is fixedly installed at the end of the mounting block 381 away from the fifth return spring 383. The locking rod 384 is slidably connected to the push rod 385. A connecting block 39 is fixedly installed on the fixed rod 52. The connecting block 39 is connected to the slider;During use, the driving member 37 drives the second driving rack 341, the second mounting rod 342, the limiting block 32, the first connecting rod 311, and the first driving rack 322 to move synchronously. At this time, the first driving rack 322 drives the driving gear 312 to rotate. During the rotation of the gear 312, the rotating shaft and the rotating rod 31 are driven to rotate synchronously. The rotating rod 31 drives the clamping seat 14 to move towards the fixed seat 13 through the first connecting rod 311. At this time, the first connecting gear 351 has not yet meshed with the second driving rack 341. When the first driving rack 322 drives the clamping seat 14 to move to a specified position to clamp and fix the automotive valve body 7, the gear 312 is separated from the first driving rack 322. The locking rod 384 drives the push rod 385 to move along the length direction of the mounting slide rail 38, so as to drive the tooth block 382 to be clamped on the gear 312, thereby fixing the gear 312, so as to fix the current position of the clamping seat 14. Subsequently, the first connecting gear 351 meshes with the second driving rack 341. During the movement of the second driving rack 341, the first connecting gear 351 is driven to rotate. During the rotation of the first gear 312, the connecting shaft 35 is driven to rotate, thereby driving the second gear 312 to rotate. During the rotation of the second gear 312, the lifting rack 36 is driven to move along the vertical direction, so as to drive the second driving block 26 to move along the vertical direction, thereby facilitating the pressing and fixing of the automotive valve body 7. During the movement of the second driving block 26 along the vertical direction, the mounting slide rail 38 is pushed to move along the vertical direction. During the movement of the mounting slide rail 38, the fixed rod 52 is driven to move synchronously through the connecting block 39, so as to drive the first limiting rod 132 and the second limiting rod 142 to move synchronously.;

[0047] As Figure 6 , Figure 7 and Figure 8 shown, the driving member 37 is an electric push rod, and the telescopic rod of the electric push rod is connected to the end of the second driving rack 341 away from the limiting block 32; during use, the electric push rod is started, and the telescopic rod of the electric push rod extends, so as to drive the second driving rack 341, the second mounting rod 342, the limiting block 32, the first connecting rod 311, and the first driving rack 322 to move synchronously; in other embodiments, the driving member 37 can also be a lead screw, the lead screw is threadedly connected to the mounting frame 24, and one end of the lead screw is connected to the end of the second driving rack 341. During use, the staff uses a wrench to drive the lead screw to rotate. During the rotation of the lead screw, it extends along the length direction of the limiting slide rail 34, so as to drive the second driving rack 341 to move. The driving member 37 can also adopt a cylinder or a hydraulic cylinder, etc.

[0048] As Figure 1 , Figure 2 , Figure 3 and Figure 10As shown in the figure, the driving component 4 includes a driving disk 41. The driving disk 41 is rotatably installed on the support frame 11 and is connected to the clamping seat 12. A plurality of fixing teeth 42 are evenly installed on the driving disk 41 along its circumferential direction. A fixing frame 43 is fixedly installed on the base 1 along the vertical direction. A fixing slide rail 44 is installed on the fixing frame 43 along the horizontal direction. A driving slider 45 is slidably installed on the fixing slide rail 44. Two driving teeth 451 are fixedly installed on the driving slider 45. The two driving teeth 451 are respectively located at both ends of the driving slider 45. A power disk 46 is rotatably installed on the fixing frame 43. A second connecting rod 461 is hingedly installed on the power disk 46. The other end of the second connecting rod 461 is hinged to the driving slider 45. A driving shaft 462 is coaxially installed on the power disk 46. A worm gear 463 is coaxially installed on the driving shaft 462. A worm 464 is rotatably installed on the fixing frame 43. The worm 464 meshes with the worm gear 463. A connecting groove 465 in a cross shape is opened at one end of the worm 464. During use, the staff inserts a wrench into the connecting groove 465 and then rotates the wrench to drive the worm 464 to rotate. During the rotation of the worm 464, the worm gear 463 will be driven to rotate. Due to the self-action of the worm gear 463 and the worm 464, the worm gear 463 cannot drive the worm 464 to rotate. During the rotation of the worm gear 463, the driving shaft 462 will be driven to rotate. During the rotation of the driving shaft 462, the power disk 46 will be driven to rotate synchronously. During the rotation of the power disk 46, the second connecting rod 461 will be driven to move. During the movement of the second connecting rod 461, the driving slider 45 will be driven to reciprocate along the length direction of the fixing slide rail 44. During the movement of the driving slider 45, the two driving teeth 451 on the driving slider 45 will respectively be used to push the fixing teeth 42 to move, so that the driving slider 45 drives the driving disk 41 to rotate, and then the clamping seat 12 rotates by a certain angle, which is convenient for the staff to carry out processing.

[0049] As Figure 6 , Figure 7 and Figure 8 As shown in the figure, an installation through groove 6 is opened on the limiting block 32 along its length direction. The first installation rod 321 is slidably installed in the installation through groove 6. A plurality of positioning holes 61 are opened on the first installation rod 321 along its length direction. A fixing screw 62 is threadedly connected to the limiting block 32. The bottom of the fixing screw 62 is inserted into the positioning hole 61. During use, the staff slides the first installation rod 321 along the length direction of the installation through groove 6 to adjust the length of the first installation rod 321 extending out of the installation through groove 6. When the staff adjusts the first installation rod 321 to a suitable position, the fixing screw 62 is screwed, so that the end of the fixing screw 62 can be inserted into the positioning hole 61 at the current position of the first installation rod 321, thereby fixing the first installation rod 321, and then the distance between the clamping seat 14 and the fixing seat 13 can be adjusted, which is convenient for fixing automotive valve bodies 7 of different sizes within a certain range.

[0050] As Figure 4 shown, a contact rod 134 is fixedly installed at the top of the fixed seat 13 through screws. A contact seat 135 is slidably installed on the contact rod 134. A third spring 1351 is installed on the contact seat 135, and the other end of the third spring 1351 is connected to the contact rod 134. A push rod 145 is fixedly installed at the top of the clamping seat 14 through screws; by installing the contact seat 135 and the push rod 145, it is convenient for the staff to fix the top position of the automotive valve body 7, and improve the installation and fixing effect of the automotive valve body 7.

[0051] As Figure 5 shown, a slag discharge through hole 121 is formed in the clamping seat 12; when the staff processes the automotive valve body 7, the slag discharge through hole 121 facilitates the discharge of the waste slag generated during the processing of the automotive valve body 7, thus facilitating the staff to process the automotive valve body 7.

[0052] The implementation principle of this embodiment is: during use, place the automotive valve body 7 on the clamping seat 12, and then drive the clamping seat 14 to move towards the fixed seat 13 through the linkage assembly 3, so as to facilitate the clamping and positioning of the automotive valve body 7. After the clamping seat 14 and the fixed seat 13 clamp and position the automotive valve body 7, the linkage assembly 3 will drive the pressing assembly 2 to press and fix the automotive valve body 7, so that the staff can clamp and position the automotive valve body 7 only through the linkage assembly 3, which is convenient for the staff to operate and has a high production efficiency.

[0053] The above is only a preferred embodiment of the present invention, and does not impose any form of limitation on the present invention. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes, without departing from the scope of the technical solution of the present invention. Therefore, any changes, modifications, equivalent changes and modifications made to the above embodiments based on the technology of the present invention without departing from the content of the present invention's solution all fall within the protection scope of this technical solution.

Claims

1. An automotive valve body machining positioning fixture, characterized in that: It includes a base (1), a support frame (11) is arranged on the base (1), a clamping seat (12) is rotatably arranged on the support frame (11), a fixed seat (13) is arranged on one side of the clamping seat (12), and a clamping seat (14) is slidably arranged on the other side. A first positioning component (131) is arranged on the fixed seat (13). The first positioning component (131) includes multiple first positioning rods (1311). The multiple first positioning rods (1311) are uniformly arranged along the length direction of the fixed seat (13). One end of the first positioning rod (1311) is provided with a first spring (1312), and the other end of the first spring (1312) is connected to the fixed seat (13). A first limiting rod (132) for fixing the multiple first positioning rods (1311) is arranged on the fixed seat (13). A second positioning component (141) is arranged on the clamping seat (14). The second positioning component (141) includes multiple second positioning rods (1411). The multiple second positioning rods (1411) are uniformly arranged along the length direction of the clamping seat (14). One end of the second positioning rod (1411) is provided with a second spring (1412), and the other end of the second spring (1412) is connected to the clamping seat (14). A second limiting rod (142) for fixing the multiple second positioning rods (1411) is arranged on the clamping seat (14). A pressing component (2) for pressing and fixing the automotive valve body (7) is arranged on the clamping seat (12). A linkage component (3) for driving the clamping seat (14) to clamp and fix the automotive valve body (7) and driving the pressing component (2) to press and fix the automotive valve body (7) is arranged on the clamping seat (12). A driving component (4) for driving the clamping seat (12) to rotate is arranged on the base (1). The first limiting rod (132) is slidably arranged along the length direction of the fixed seat (13) itself. Multiple arc-shaped first clamping blocks (133) are uniformly arranged at the bottom of the first limiting rod (132). The multiple first clamping blocks (133) correspond to the multiple first positioning rods (1311) one by one, and the multiple first clamping blocks (133) are all slidably embedded in the interior of the fixed seat (13). The second limiting rod (142) is slidably arranged along the length direction of the clamping seat (14) itself. Multiple arc-shaped second clamping blocks (143) are uniformly arranged at the bottom of the second limiting rod (142). The multiple second clamping blocks (143) correspond to the multiple second positioning rods (1411) one by one, and the multiple second clamping blocks (143) are all slidably embedded in the interior of the clamping seat (14). A power component (5) for driving the first limiting rod (132) and the second limiting rod (142) to move synchronously is arranged on the clamping seat (12). The power component (5) includes a driving rod (51), a fixed rod (52), and two sliding rods (53). The two sliding rods (53) are respectively located on both sides of the clamping seat (12).And two sliding rods (53) are both slidably arranged vertically through the clamping seat (12). Both ends of the driving rod (51) are connected to the tops of the two sliding rods (53) respectively. One end of the first limiting rod (132) close to the driving rod (51) is fixedly provided with a first driven block (54). A first return spring (136) is arranged at the other end of the first limiting rod (132). One end of the first spring (1312) away from the first limiting rod (132) is connected to the fixed seat (13). One end of the second limiting rod (142) close to the driving rod (51) is fixedly provided with a second driven block (55). A second return spring (144) is installed at the other end of the second limiting rod (142). One end of the second return spring (144) away from the second limiting rod (142) is connected to the clamping seat (14). The inclined surface of the first driven block (54) is slidably connected to the inclined surface of the driving rod (51). The inclined surface of the second driven block (55) is slidably connected to the inclined surface of the driving rod (51). Both ends of the fixed rod (52) are connected to the bottoms of the two sliding rods (53) respectively. The pressing assembly (2) includes two pressing rods (21). Both of the two pressing rods (21) are slidably arranged vertically on the clamping seat (12). A pressing block (22) for pressing and fixing the automotive valve body (7) is fixedly provided at the top of the pressing rod (21). A rotating gear (23) is coaxially arranged at the bottom of the pressing rod (21). An installation frame (24) is fixedly provided at the bottom of the clamping seat (12). An installation chute (241) is vertically formed on the installation frame (24). An installation slider (242) is slidably arranged in the installation chute (241). A support slide rail (25) is horizontally arranged on the installation slider (242). A third return spring (243) is installed at the bottom of the installation slider (242). The other end of the third return spring (243) is connected to the bottom of the installation frame (24). An installation rack (251) is horizontally slidably arranged in the support slide rail (25). The rotating gear (23) meshes with the installation rack (251). One end of the installation rack (251) is provided with a fourth return spring (252). The other end of the fourth return spring (252) is connected to the support slide rail (25). An abutting block (253) is arranged at the other end of the installation rack (251). A triangular second driving block (26) is vertically slidably arranged on the installation frame (24). The abutting block (253) is slidably connected to the side wall of the second driving block (26). A fifth return spring (383) is arranged on the installation frame (24). One end of the fifth return spring (383) is connected to the bottom of the second driving block (26). Pressure blocks (27) are arranged on both sides of the top of the second driving block (26). A receiving block (28) is arranged at one end of the support slide rail (25) close to the second driving block (26).The pressure block (27) is used to press the receiving block (28).

2. The positioning fixture for machining an automotive valve body according to claim 1, wherein: The linkage assembly (3) includes a rotating rod (31) and a limiting block (32). The rotating rod (31) is rotatably arranged at the bottom of the clamping seat (12) through a rotating shaft. One end of the rotating rod (31) is hinged with a first connecting rod (311), and the other end of the first connecting rod (311) is hinged with the bottom of the clamping seat (14). A gear (312) is coaxially and fixedly arranged on the rotating shaft. A limiting sliding groove (33) is formed on the clamping seat (12), and the limiting block (32) is slidably arranged in the limiting sliding groove (33). A first mounting rod (321) is arranged on the limiting block (32), and a first driving rack (322) is arranged at the end of the first mounting rod (321) far from the limiting block (32). The first driving rack (322) meshes with the gear (312). A limiting sliding rail (34) is fixedly arranged at the bottom of the mounting frame (24), and a second driving rack (341) is slidably arranged in the limiting sliding rail (34). A second mounting rod (342) is arranged at one end of the second driving rack (341) close to the limiting block (32). A third mounting rod (343) is arranged at the top of the second mounting rod (342) along the vertical direction, and the top of the third mounting rod (343) is connected to the limiting block (32). A connecting shaft (35) is rotatably mounted on the mounting frame (24). A first connecting gear (351) is coaxially arranged at one end of the connecting shaft (35), and a second connecting gear (352) is coaxially arranged at the other end. The first connecting gear (351) meshes with the second driving rack (341). A lifting rack (36) is fixedly arranged on the second driving block (26) along the vertical direction, and the lifting rack (36) meshes with the second connecting gear (352). A driving member (37) is arranged on the mounting frame (24), and the driving member (37) is connected to the end of the second driving rack (341) far from the limiting block (32) to drive the second driving rack (341) to move. An installation sliding rail (38) is arranged at the bottom of the clamping seat (12), and an installation block (381) is slidably arranged in the installation sliding rail (38). A tooth block (382) is arranged on the installation block (381). A fifth return spring (383) is arranged on the installation block (381), and the other end of the fifth return spring (383) is connected to the installation sliding rail (38). A locking rod (384) is arranged on the first mounting rod (321). A push rod (385) is arranged at the end of the installation block (381) far from the fifth return spring (383). The locking rod (384) is slidably connected to the push rod (385). A connecting block (39) is fixedly mounted on the fixed rod (52), and the connecting block (39) is connected to the slider.

3. The positioning fixture for machining an automotive valve body according to claim 2, wherein: The driving member (37) is an electric push rod, and the telescopic rod of the electric push rod is connected to the end of the second driving rack (341) far from the limiting block (32).

4. A positioning fixture for machining an automotive valve body according to claim 1, characterized in that: The driving assembly (4) includes a driving disk (41). The driving disk (41) is rotatably arranged on the support frame (11) and connected to the clamping seat (12). A plurality of fixing teeth (42) are evenly arranged on the driving disk (41) along its circumferential direction. A fixing frame (43) is arranged on the base (1). A fixing slide rail (44) is arranged on the fixing frame (43). A driving slider (45) is slidably arranged on the fixing slide rail (44). Two driving teeth (451) are arranged on the driving slider (45), and the two driving teeth (451) are respectively located at both ends of the driving slider (45). A power disk (46) is rotatably arranged on the fixing frame (43). A second connecting rod (461) is hinged on the power disk (46). The other end of the second connecting rod (461) is hinged to the driving slider (45). A driving shaft (462) is coaxially arranged on the power disk (46). A worm gear (463) is coaxially arranged on the driving shaft (462). A worm (464) is rotatably arranged on the fixing frame (43). The worm (464) meshes with the worm gear (463). A cross-shaped connecting groove (465) is formed at one end of the worm (464).

5. The positioning fixture for machining an automotive valve body according to claim 2, characterized in that: An installation through hole (6) is formed in the limit block (32). The first installation rod (321) is slidably arranged in the installation through hole (6). A plurality of positioning holes (61) are formed in the first installation rod (321) along its length direction. A fixing screw (62) is threadedly connected to the limit block (32), and the bottom of the fixing screw (62) is inserted into the positioning hole (61).

6. The positioning fixture for machining an automotive valve body according to claim 1, wherein: A butting rod (134) is fixedly arranged on the top of the fixing seat (13) by screws. A butting seat (135) is slidably arranged on the butting rod (134). A third spring (1351) is arranged on the butting seat (135), and the other end of the third spring (1351) is connected to the butting rod (134). A pushing rod (145) is fixedly installed on the top of the clamping seat (14) by screws.

7. A positioning fixture for machining an automotive valve body according to claim 1, characterized in that: A slag discharge through hole (121) is formed in the clamping seat (12).

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