Positioning device for trimming automobile parts

Abstract

The invention relates to the field of part machining, in particular to a positioning device for trimming of automobile parts. In the prior art, when a wind shield casting part is sawed, the wind shield casting part needs to be manually moved and pressed by a claw arm to be fixed, so that the wind shield casting part is sawed more stably, the manual operation dependency degree is high in the process, the efficiency is low, and the labor intensity is high. And the consistency of the trimming quality is influenced by instability of manual movement and pressing of the wind shield casting by using the claw arm. A positioning device for trimming of automobile parts comprises a base, a placing plate is fixedly connected to the upper portion of the base, and two electric sliding rails are fixedly connected to the center of the base. Through resetting of compression springs, the wind shield casting parts are clamped by the moving blocks and the overturning plates on the square plates at the same time, and the wind shield casting parts are calibrated by the four overturning plates towards the center position of the placing plate, so that the water gaps of the wind shield casting parts can be stably sawn off by the movable electric sawing machine; and the sawing quality of the water gap of the wind shield casting part is improved.

Description

Technical Field

[0001] The invention relates to the field of parts processing, in particular to a positioning device for trimming of automobile parts. Background Art

[0002] With the rapid development of the automobile industry, the manufacturing process of automobile parts is constantly innovating. As an important part of the automobile, the quality and precision of automobile windshield castings directly affect the safety, aesthetics and overall performance of the automobile. In the production process of automobile windshield castings, the trimming positioning of the nozzle is a key process.

[0003] After injection molding, sprues will be left behind for the windshield casting, which not only affect the appearance of the product, but may also hinder subsequent assembly and use. Currently, when sawing the windshield casting, it is necessary to manually use a claw arm to place and hold the windshield casting to fix it, so that the windshield casting is more stable during sawing. This process is highly dependent on manual operation and has low efficiency. In addition, the manual use of the claw arm to place and press the windshield casting is unstable, which affects the consistency of the cutting quality. Summary of the invention

[0004] In order to overcome the above-mentioned shortcomings, the present invention provides a positioning device for trimming automotive parts, which can perform center calibration and clamping on a windshield casting, and can saw the windshield casting stably and closely, thereby improving the subsequent sawing quality.

[0005] The technical implementation scheme of the present invention is: a positioning device for trimming automotive parts, including a base, a placement plate fixedly connected to the upper part of the base, a windshield casting placed on the placement plate, two electric slide rails fixedly connected to the center of the base, a mobile electric sawing machine slidably connected between the two electric slide rails, four square plates fixedly connected to the placement plate, two limit blocks fixedly connected to the inner side of each square plate, an extrusion mechanism is provided on the base, a clamping mechanism is provided on each square plate, a pushing mechanism is provided on the extrusion mechanism, and a clamping mechanism is provided on the clamping mechanism.

[0006] Optionally, the extrusion mechanism includes a servo motor, which is fixedly mounted on the base, a power gear is fixedly connected to the output shaft of the servo motor, a convex ring is rotatably connected to the lower part of the placement plate, an arc-shaped rack is fixedly connected to the outer side of the convex ring, the bottom of each square plate is fixedly connected to a support plate, and each support plate is slidably connected to a push rod.

[0007] Optionally, the clamping mechanism includes a connecting rod, which is fixedly connected to the lower part of the push rod, and the upper parts of both sides of the connecting rod are fixedly connected with convex rods, both sides of each square plate are fixedly connected with fixed arc frames, the upper part of each arc frame is slidably connected with a clamping rod, a tension spring is connected between the clamping rod and the fixed arc frame, and a moving block is slidably connected to each square plate.

[0008] Optionally, the pushing mechanism includes a lower rack rod, which is fixedly connected to the push rod, a rotating rod is rotatably connected to the support plate, a pinion and an overrunning clutch are fixedly connected to the rotating rod, a fixed gear is fixedly connected to the overrunning clutch, and an upper rack plate is fixedly connected to one side of the moving block.

[0009] Optionally, the clamping mechanism includes a rotating roller, which is rotatably connected to the moving block, a flip plate is fixedly connected to the rotating roller, extension rods are fixedly connected to both sides of the lower part of the flip plate, a pushing seat is fixedly connected to the lower side of the flip plate, compression springs are connected between the moving block and the square plate on the same side, and torsion springs are respectively connected between the two sides of the flip plate and the inner side of the moving block.

[0010] Optionally, a clamping mechanism is also included, which is arranged on the moving block and is used to clamp the windshield casting. The clamping mechanism includes a fixed convex ring, which is fixed on both sides of the interior of each moving plate. A clamping plate is slidably connected to each flip plate, two extrusion springs are connected between one side of each clamping plate and the square plate, and a buffer block is fixedly connected to one side of the upper part of each clamping plate.

[0011] Optionally, the buffer block is made of rubber.

[0012] The present invention has the following advantages: 1. The push seat and the flip plate are limited by the moving groove of the push rod, so that the flip plate can keep the state of rotating 90 degrees while squeezing the torsion spring.

[0013] 2. By compressing the spring reset, the moving block and the flip plate on each square plate clamp the windshield casting at the same time, and the four flip plates are calibrated toward the center position of the placement plate, so that the water outlet of the windshield casting can be stably sawed off by the mobile electric sawing machine, thereby improving the sawing quality of the water outlet of the windshield casting.

[0014] 3. Under the reset action of the extrusion spring, each clamp and buffer block clamps the upper surface of the windshield casting, making the windshield casting fit more closely and firmly with the placement plate, thereby greatly improving the stability of the mobile electric sawing machine when sawing the windshield casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a schematic diagram of the three-dimensional structure of the base, the placement plate, the windshield casting and the square plate of the present invention.

[0016] Figure 2 It is a three-dimensional structural schematic diagram of the base, the placement plate, the mobile electric sawing machine and the square plate of the present invention.

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the extrusion mechanism of the present invention.

[0018] Figure 4 It is a three-dimensional structural schematic diagram of the square plate and part of the extrusion mechanism and the clamping mechanism of the present invention.

[0019] Figure 5 It is a schematic diagram of the three-dimensional structure of the square plate, connecting rod, moving block and flip plate of the present invention.

[0020] Figure 6 It is a schematic diagram of the split three-dimensional structure of the clamping mechanism, the pushing mechanism and the pressing mechanism of the present invention.

[0021] Figure 7 It is a schematic diagram of the three-dimensional structure of the clamping mechanism of the present invention.

[0022] Figure 8 It is a partial three-dimensional structural schematic diagram of the extrusion mechanism, the clamping mechanism and the pushing mechanism of the present invention.

[0023] The meanings of the reference numerals in the figure are as follows: 1: base, 2: placement plate, 21: windshield casting, 22: electric slide rail, 3: mobile electric sawing machine, 4: square plate, 41: limit block, 51: servo motor, 52: power gear, 53: convex ring, 54: arc rack, 55: support plate, 56: push rod, 61: connecting rod, 62: convex rod, 63: fixed arc frame, 64: clamping rod, 65: tension spring, 66: moving block, 71: lower rack rod, 72: rotating rod, 73: pinion, 74: overrunning clutch, 75: fixed gear, 76: upper rack plate, 81: rotating roller, 811: flip plate, 82: extension rod, 821: push seat, 83: compression spring, 84: torsion spring, 91: fixed convex ring, 92: clamping plate, 93: extrusion spring, 94: buffer block. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It is hereby stated that the directional terms such as up, down, left, right, front, back, inside, outside, etc. that appear or will appear in the text of the present invention are only based on the accompanying drawings of the present invention, and are not specific limitations of the present invention.

[0025] Embodiment 1: A positioning device for trimming automotive parts, such as Figure 1-Figure 6 and Figure 8 As shown, it includes a base 1, a placement plate 2 is welded on the upper part of the base 1, a windshield casting 21 is placed on the placement plate 2, two electric slide rails 22 are fixedly connected to the center of the base 1, a mobile electric sawing machine 3 is slidably connected between the two electric slide rails 22, four square plates 4 are welded on the placement plate 2, two limit blocks 41 are welded and connected to the inner side of each square plate 4, and the two limit blocks 41 on each square plate 4 are symmetrically arranged, an extrusion mechanism is provided on the base 1, a clamping mechanism is provided on each square plate 4, a pushing mechanism is provided on the extrusion mechanism, and a clamping mechanism is provided on the clamping mechanism.

[0026] The extrusion mechanism includes a servo motor 51, which is fixedly installed on the base 1. A power gear 52 is fixedly connected to the output shaft of the servo motor 51. A convex ring 53 is rotatably connected to the lower part of the placement plate 2. An extrusion groove is opened on the convex ring 53. An arc-shaped rack 54 is welded on the outer side of the convex ring 53. The arc-shaped rack 54 is meshed with the power gear 52. A support plate 55 is welded to the bottom of each square plate 4. A push rod 56 is slidably connected to each support plate 55. Each push rod 56 has a moving groove, and the side of each push rod 56 close to each other is in contact with the convex ring 53.

[0027] The clamping mechanism includes a connecting rod 61, which is fixedly connected to the lower part of the push rod 56. The upper parts of both sides of the connecting rod 61 are fixedly connected with convex rods 62. Both sides of each square plate 4 are fixedly connected with fixed arc frames 63. The upper part of each arc frame is slidably connected with a clamping rod 64. A tension spring 65 is connected between the clamping rod 64 and the fixed arc frame 63. Each square plate 4 is slidably connected with a moving block 66. Both sides of each moving block 66 are provided with clamping grooves, and the two clamping rods 64 are respectively clamped into the clamping grooves on both sides of the moving block 66.

[0028] The pushing mechanism includes a lower rack rod 71, which is fixedly connected to the push rod 56, a rotating rod 72 is rotatably connected to the support plate 55, a pinion 73 and an overrunning clutch 74 are fixedly connected to the rotating rod 72, a fixed gear 75 is fixedly connected to the overrunning clutch 74, an upper rack plate 76 is welded to one side of the moving block 66, and the upper rack plate 76 is meshed with the fixed gear 75.

[0029] The pressing mechanism includes a rotating roller 81, which is rotatably connected to the moving block 66, and a flip plate 811 is fixedly connected to the rotating roller 81. Extension rods 82 are fixedly connected to both sides of the lower part of the flip plate 811, and a pushing seat 821 is fixedly connected to the lower side of the flip plate 811. The pushing seat 821 is in contact with the push rod 56. Compression springs 83 are connected between the moving block 66 and the square plate 4 on the same side, and torsion springs 84 are connected between the two sides of the flip plate 811 and the inner side of the moving block 66 respectively.

[0030] At first, under the action of the tension spring 65, each clamping rod 64 is clamped into the clamping groove of the moving block 66 to limit the moving block 66, and the compression spring 83 is squeezed on both sides of each moving block 66. Under the action of the torsion spring 84, the upper part of the flip plate 811 fits with the square plate 4. When it is necessary to cut the water outlet of the windshield casting 21, the staff first puts the windshield casting 21 on the placement plate 2 and the four square plates 4, and then starts the servo motor 51 to reverse. The output shaft of the servo motor 51 drives the power gear 52 to reverse together. The power gear 52 reverses and drives the convex ring 53 and the arc-shaped rack 54 to rotate forward together. The convex ring 53 reverses and squeezes the four push rods 56 through the four extrusion grooves on the convex ring 53 at the same time. The push rods 56 move along the four support plates 55 in the direction away from each other, and each push rod 56 squeezes the push seat 821. The push seat 821, the flip plate 811 and the rotating roller 81 rotate with the rotating roller 81 as the center point. The torsion spring 84 is compressed, and the push seat 821 and the flip plate 811 rotate to drive the two extension rods 82 on the flip plate 811 to rotate together. The two extension rods 82 move along the arc surface of the fixed arc frame 63 respectively. When the push rod 56 drives the connecting rod 61 to move, it also drives the lower rack rod 71 to move together. The movement of the lower rack rod 71 will mesh with the pinion 73, and the pinion 73 and the rotating rod 72 are driven to rotate forward together through the tooth block on the lower rack rod 71. Under the action of the overrunning clutch 74, the fixed The gear 75 does not rotate. When the push rod 56 drives the connecting rod 61 and the protruding rod 62 to move to the end, the tooth block on the lower rack rod 71 is no longer meshed with the pinion 73. The two protruding rods 62 squeeze the two clamping rods 64 through the inclined surface. At the same time, after the flip plate 811, the two extension rods 82 and the rotating roller 81 are rotated 90 degrees, the two clamping rods 64 are disengaged from the clamping grooves of the moving block 66. The two clamping rods 64 no longer limit the moving block 66. Under the reset action of the two compression springs 83, the moving block 66 moves along the square plate 4. The movement of the moving block 66 drives the flip plate 811, the pushing seat 821, the two extension rods 82 and the rotating roller 81 to move together. The two extension rods 82 are stuck in the space between the two fixed arc frames 63 and the square plate 4 to form a The push seat 821 is inserted into the moving groove of the push rod 56, and the moving groove of the push rod 56 limits the push seat 821 and the flip plate 811, so that the flip plate 811 can keep the flip plate 811 rotated 90 degrees while squeezing the torsion spring 84, and at the same time reset by the compression spring 83, so that the moving block 66 and the flip plate 811 on each square plate 4 can clamp the windshield casting 21 at the same time, and the four flip plates 811 are calibrated toward the center position of the placement plate 2, so that the water outlet of the windshield casting 21 can be stably sawed off by the mobile electric sawing machine 3, thereby improving the sawing quality of the water outlet of the windshield casting 21, and the moving block 66 also drives the upper rack plate 76 to move together during the resetting process.The fixed gear 75, the overrunning clutch 74, the rotating rod 72 and the pinion 73 are driven to reverse together by the tooth block on the upper rack plate 76, and then the servo motor 51 stops rotating, and the convex ring 53 keeps squeezing the four push rods 56, and finally the electric slide rail 22 and the mobile electric sawing machine 3 are started, and the electric slide rail 22 is powered to drive the mobile electric sawing machine 3 to move, and the mobile electric sawing machine 3 is started to cut off the water outlet of the windshield casting 21. When the water outlet of the windshield casting 21 is cut off, the staff starts the electric slide rail 22 and the mobile electric sawing machine 3. The electric sawing machine 3 and the servo motor 51 are reset, the output shaft of the servo motor 51 drives the power gear 52 to rotate forward, the power gear 52 rotates forward to drive the convex ring 53 and the arc-shaped rack 54 to rotate reversely, the convex ring 53 is reset to push the four push rods 56 to reset through the four extrusion grooves, the push rod 56 is reset to drive the connecting rod 61, the convex rod 62 and the lower rack rod 71 to reset, the push rod 56 is reset to no longer squeeze the flip plate 811 and the pushing seat 821, the connecting rod 61 and the convex rod 62 are reset to no longer squeeze the clamping rod 64, and the two clamping rods 64 continue to be in the state under the limiting action of the moving block 66 , the push rod 56 and the lower rack rod 71 will mesh with the pinion 73 when they are reset, the lower rack rod 71 pushes the pinion 73 to rotate forward, the pinion 73 drives the rotating rod 72, the overrunning clutch 74 and the fixed gear 75 to rotate forward together, the fixed gear 75 rotates forward to drive the upper rack plate 76 to reset, the upper rack plate 76 resets and drives the moving block 66 to reset, the moving block 66 resets and squeezes the compression spring 83, the moving block 66 resets and drives the flip plate 811, the two extension rods 82 and the push block to reset together, the two extension rods 82 reset from the fixed arc frame 63 and the square plate 4 The gap is disengaged, and the push block is disengaged from the moving groove of the push rod 56. Under the action of the torsion spring 84, the flip plate 811 drives the two extension rods 82 and the push seat 821 to reset. The two extension rods 82 are reset along the arc of the fixed arc frame 63 respectively. When the moving block 66 on the same square plate 4 is reset to the initial state, the two limit blocks 41 on the same square plate 4 limit the moving block 66. The two clamping rods 64 are clamped into the clamping grooves on both sides of the moving block 66 under the action of the tension spring 65, and the two clamping rods 64 clamp the moving block 66 again.

[0031] Embodiment 2: Based on embodiment 1, Figure 8 As shown, it also includes a clamping mechanism, which is arranged on the moving block 66. The clamping mechanism is used to clamp the windshield casting 21. The clamping mechanism includes a fixed convex ring 91, which is fixed on both sides of the inside of each moving plate. The two fixed convex rings 91 are respectively located at both ends of the rotating roller 81. A clamping plate 92 is slidably connected to each flip plate 811. Two extrusion springs 93 are connected between one side of each clamping plate 92 and the square plate 4, and a buffer block 94 is fixedly connected to one side of the upper part of each clamping plate 92.

[0032] The buffer block 94 is made of high temperature resistant material.

[0033] At first, the arc surface of the fixed convex ring 91 squeezes the clamp 92, and under the limiting action of the flip plate 811, the clamp 92 squeezes the squeezing spring 93 along the flip plate 811, and the clamp 92 is in a compressed state. Under the action of the squeezing spring 93, the side of the clamp 92 close to the fixed convex ring 91 contacts the fixed convex ring 91. When the flip plate 811 drives the clamp 92 to flip ninety degrees, the side of the clamp 92 close to the fixed convex ring 91 moves along the arc surface of the fixed convex ring 91, so that the fixed convex ring 91 no longer squeezes the clamp 92. Under the resetting action of the squeezing spring 93, each clamp 92 and the buffer block 94 clamps the upper surface of the windshield casting 21, so that the windshield casting and the placement plate 21 fit more closely and firmly, thereby greatly improving the stability of the mobile electric sawing machine 3 when sawing the windshield casting 21.

[0034] Although the present invention is described in detail with reference to the above embodiments, it is obvious to those skilled in the art through this disclosure that various changes or modifications may be made to the present invention without departing from the principle and spirit of the present invention defined by the claims. Therefore, the detailed description of the embodiments of the present disclosure is only used to explain, not to limit the present invention, but the scope of protection is limited by the content of the claims.

Claims

1. A positioning device for trimming automotive parts, characterized by: The invention comprises a base (1), a placement plate (2) is fixedly connected to the upper part of the base (1), a windshield casting (21) is placed on the placement plate (2), two electric slide rails (22) are fixedly connected to the center of the base (1), a mobile electric sawing machine (3) is slidably connected between the two electric slide rails (22), four square plates (4) are fixedly connected to the placement plate (2), two limit blocks (41) are fixedly connected to the inner side of each square plate (4), an extrusion mechanism is provided on the base (1), a clamping mechanism is provided on each square plate (4), a pushing mechanism is provided on the extrusion mechanism, and a pressing mechanism is provided on the clamping mechanism.

2. A positioning device for trimming of automotive parts according to claim 1, characterized in that: The extrusion mechanism comprises a servo motor (51), which is fixedly mounted on a base (1); a power gear (52) is fixedly connected to the output shaft of the servo motor (51); a convex ring (53) is rotatably connected to the lower part of the placement plate (2); an arc-shaped rack (54) is fixedly connected to the outer side of the convex ring (53); a support plate (55) is fixedly connected to the bottom of each square plate (4); and a push rod (56) is slidably connected to each support plate (55).

3. A positioning device for trimming of automotive parts according to claim 2, characterized in that: The clamping mechanism comprises a connecting rod (61), the connecting rod (61) is fixedly connected to the lower part of the push rod (56), the upper parts of both sides of the connecting rod (61) are fixedly connected with convex rods (62), both sides of each square plate (4) are fixedly connected with fixed arc frames (63), the upper part of each arc frame is slidably connected with a clamping rod (64), a tension spring (65) is connected between the clamping rod (64) and the fixed arc frame (63), and each square plate (4) is slidably connected with a moving block (66).

4. A positioning device for trimming of automobile parts according to claim 3, characterized in that: The pushing mechanism comprises a lower rack rod (71), the lower rack rod (71) is fixedly connected to the push rod (56), a rotating rod (72) is rotatably connected to the support plate (55), a pinion (73) and an overrunning clutch (74) are fixedly connected to the rotating rod (72), a fixed gear (75) is fixedly connected to the overrunning clutch (74), and an upper rack plate (76) is fixedly connected to one side of the moving block (66).

5. A positioning device for trimming of automobile parts according to claim 4, characterized in that: The pressing mechanism comprises a rotating roller (81), the rotating roller (81) is rotatably connected to the moving block (66), a flip plate (811) is fixedly connected to the rotating roller (81), extension rods (82) are fixedly connected to both sides of the lower part of the flip plate (811), a pushing seat (821) is fixedly connected to the lower side of the flip plate (811), compression springs (83) are connected between the moving block (66) and the square plate (4) on the same side, and torsion springs (84) are respectively connected between both sides of the flip plate (811) and the inner side of the moving block (66).

6. A positioning device for trimming of automobile parts according to claim 5, characterized in that: The invention also includes a clamping mechanism, which is arranged on the moving block (66) and is used to clamp the windshield casting (21). The clamping mechanism includes a fixed convex ring (91), which is fixed to both sides of the inside of each moving plate. A clamping plate (92) is slidably connected to each flip plate (811), two extrusion springs (93) are connected between one side of each clamping plate (92) and the square plate (4), and a buffer block (94) is fixedly connected to one side of the upper part of each clamping plate (92).

7. A positioning device for trimming of automobile parts according to claim 6, characterized in that: The buffer block (94) is made of high heat resistant material.

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