Hot air cold riveting machine

Abstract

The invention discloses a hot air cold riveting machine which is characterized in that the hot air cold riveting machine comprises a rack, an operation table is arranged on the rack, a transposition clamp is arranged in the middle of the operation table, a first clamping station and a second clamping station are symmetrically distributed on the transposition clamp, a pre-pressing assembly is arranged above the first clamping station, and a hot air cold riveting assembly is arranged above the second clamping station; an automatic alignment assembly is arranged below the second clamping station, the hot air cold riveting assembly comprises a portal frame, a translation assembly is arranged on the portal frame, a vertically-moving hot air module and a vertically-moving cold riveting module are arranged on the translation assembly, the hot air module and the cold riveting module are arranged in parallel, the hot air module is provided with a hot air gun, and the cold riveting module is provided with a cold riveting pressing head. The automatic press-fitting riveting machine has the beneficial effects that automatic press-fitting riveting of a magnetic core and a magnetic core shell of the electronic throttle valve is achieved, the riveting efficiency is high through the double-station working mode, automatic alignment of a rotating shaft of the electronic throttle valve is achieved, manpower is saved, and the product surface quality is high through the hot air cooling riveting mode.

Description

Technical Field

[0001] The invention relates to the field of electronic throttle assembly equipment, in particular to a hot air cooling riveting machine. Background Art

[0002] The electronic throttle is an important control component of the automobile engine. It is composed of an engine, a speed sensor, a throttle, a throttle position sensor, etc. The electronic throttle control system can accurately control the throttle opening. The position sensor of the electronic throttle is installed on the mounting seat by thermoforming resin, hot riveting or thermal gap filling. In the prior art, two processes, press fitting and hot riveting, are required. During the riveting process, the riveting column and the hot riveting mechanism need to be kept in a positive position. Therefore, before the workpiece is loaded, the worker needs to manually rotate the rotating shaft of the electronic throttle to make it in the initial position to ensure the smooth progress of the hot riveting. However, this method has a high labor intensity and low work efficiency for the workers. In addition, the hot riveting process in the prior art is difficult to control the temperature, which causes adhesion between the riveted head and the workpiece, resulting in poor surface quality of the riveted product. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the present invention provides a hot air cooling riveting machine, which has good riveting effect, saves manpower and has high efficiency.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A hot air cold riveting machine, characterized in that: it comprises a frame, an operating table is provided on the frame, a transfer fixture is arranged in the middle of the operating table, a first clamping station and a second clamping station are symmetrically distributed on the transfer fixture, a pre-pressing component is arranged above the first clamping station, a hot air cold riveting component is arranged above the second clamping station, and an automatic alignment component is arranged below the second clamping station, the hot air cold riveting component comprises a gantry arranged on the operating table, a translation component is arranged on the gantry, a vertically moving hot air module and a vertically moving cold riveting module are arranged on the translation component, the hot air module and the cold riveting module are arranged in parallel, the hot air module has three hot air guns arranged in a triangle, and the cold riveting module has three cold riveting heads whose distribution positions are the same as those of the hot air guns.

[0006] Furthermore, the transfer fixture includes a turntable, a fixture fixing plate, and a fixture base plate, wherein the number of the fixture fixing plates is two and they are symmetrically erected on the turntable, the number of the fixture base plates is two, vertically arranged linear guide rails are provided on the relative outer sides of the fixture fixing plates, the fixture base plate is slidably set on the linear guide rails through a slider, a spring is provided between the lower end surface of the fixture base plate and the top surface of the turntable, a positioning base plate is provided on the fixture base plate, a group of positioning pins are diagonally arranged on the positioning base plate, and a pressure block is provided in the opposite direction of the positioning base plate.

[0007] Furthermore, the pre-pressing assembly includes a support arm, a downward pressing cylinder, and a magnetic core pressing head. The downward pressing cylinder is inverted and fixed on the support arm, and the magnetic core pressing head is arranged at the front end of the piston rod of the downward pressing cylinder. The magnetic core pressing head is connected to a transverse fixing plate, and a guide column is arranged on the transverse fixing plate. The guide column is slidably matched with a linear bearing on the support arm, and the upper end of the guide column is connected to a limiting plate. The support arm is provided with a limiting rod that abuts against the limiting plate for limiting the position.

[0008] Furthermore, the automatic alignment component includes a movable sleeve, a guide rod, a connecting plate, a servo motor, and a lifting cylinder. The number of the guide rods is two, and they are arranged at intervals at the bottom of the operating table. The lower end of the guide rod is connected to a cylinder mounting plate, and the lifting cylinder is arranged on the cylinder mounting plate. The two ends of the connecting plate are slidably arranged on the guide rod through a guide sleeve, and the movable sleeve is fixedly arranged on the connecting plate. The servo motor is suspended below the connecting plate. The output shaft of the servo motor is connected to a rotating shaft through a coupling, and the rotating shaft is rotatably matched with the movable sleeve. The piston rod of the lifting cylinder is connected to the servo motor, and a rotating joint is floatingly arranged on the upper end of the rotating shaft. The upper end of the rotating joint has a screwdriver bit corresponding to the groove on the electronic throttle. A sensor for sensing the rotation position of the rotating joint is arranged on the operating table.

[0009] Furthermore, the translation assembly includes a first linear guide slider assembly and a screw nut assembly which are disposed on the gantry and arranged laterally, a transverse sliding plate is installed on the slider of the first linear guide slider assembly, the nut of the screw nut assembly is connected to the transverse sliding plate, and a motor for driving the screw nut assembly is disposed on the gantry.

[0010] Furthermore, a second linear guide slider assembly arranged vertically is provided on the transverse sliding plate, a first tooling fixing plate is provided on the slider of the second linear guide slider assembly, a first lifting cylinder for driving the first tooling fixing plate to slide vertically is provided on the transverse sliding plate, the hot air module is provided on the first tooling fixing plate, and a buffer is provided on the transverse sliding plate facing the lower end of the first tooling fixing plate.

[0011] Furthermore, a vertically arranged third linear guide slider assembly is provided on the transverse slide, a second tooling fixing plate is provided on the slider of the third linear guide slider assembly, a second lifting cylinder for driving the second tooling fixing plate to slide vertically is provided on the transverse slide, and the cold riveting module is fixedly arranged on the second tooling fixing plate.

[0012] Furthermore, a defective product bin is arranged on the operating table, and the defective product bin is tilted through the base, a hinged cover is arranged at the upper opening of the defective product bin, an openable rear door is arranged at the lower part of the defective product bin, and a counting sensor is arranged at the upper opening of the defective product bin.

[0013] Furthermore, the front of the rack has an operation window, the other sides of the rack are provided with shielding plates or cabinet doors, the sides of the operation window are provided with gratings, a control panel is provided above the operation window, and the top surface of the rack is provided with an exhaust fan, which is connected to the top of the second clamping station through a smoke exhaust pipe.

[0014] Furthermore, a scanner and an emergency stop button are provided on the operating table.

[0015] The beneficial effects of the present invention include: realizing automatic press-fit riveting of the electronic throttle core and the core shell, high riveting efficiency due to the double-station working mode, automatic alignment of the electronic throttle shaft to save manpower, and high product surface quality due to the hot air cold riveting method. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the structure of the transfer fixture of the present invention;

[0018] Figure 3 It is a schematic diagram of the structure of the pre-pressing assembly of the present invention;

[0019] Figure 4 It is a structural schematic diagram of the automatic alignment assembly of the present invention;

[0020] Figure 5 It is a structural schematic diagram of the hot air cooling riveting assembly of the present invention. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0022] A kind of Figure 1-5The hot air-cooled riveting machine shown includes a frame 1, on which is an operating table 2, on which is disposed a transfer fixture 3 in the middle, on which are symmetrically distributed a first clamping station and a second clamping station, wherein the first clamping station is close to the front of the operator. A pre-pressing assembly 6 is disposed above the first clamping station, for pre-pressing the magnetic core and the magnetic core shell onto the rotating shaft of the electronic throttle. A hot air-cooled riveting assembly 4 is disposed above the second clamping station, for riveting the magnetic core shell onto the fan gear on the electronic throttle. An automatic alignment assembly 5 is disposed below the second clamping station, for restoring the rotating shaft of the electronic throttle to its initial position. As shown Figure 5 The hot air cold riveting assembly 4 shown includes a gantry 41 arranged on the operating table 2, a translation assembly 42 is arranged on the gantry 41, and a vertically moving hot air module 43 and a vertically moving cold riveting module 44 are arranged on the translation assembly 42. The hot air module 43 and the cold riveting module 44 are arranged in parallel, the hot air module 43 has three hot air guns 430 arranged in a triangle, and the cold riveting module 44 has three cold riveting press heads 440 whose distribution positions are the same as those of the hot air guns 430.

[0023] like Figure 2 The transfer fixture 3 shown includes a turntable 31, a fixture fixing plate 32, and a fixture bottom plate 33. There are two fixture fixing plates 32, which are symmetrically erected on the turntable 31. There are two fixture bottom plates 33, and the relative outer sides of the fixture fixing plates 32 are provided with vertically arranged linear guide rails 34. The fixture bottom plate 33 is slidably arranged on the linear guide rails 34 through a slider. A spring 35 is provided between the lower end surface of the fixture bottom plate 33 and the top surface of the turntable 31. A positioning bottom plate 36 is provided on the fixture bottom plate 33, and a group of positioning pins 37 are arranged diagonally on the positioning bottom plate 36. A pressure block 38 is provided in the opposite direction of the positioning bottom plate 36. Therefore, the fixture bottom plate 33 can be vertically buffered during press-fitting or cold riveting. A coarse positioning block 39 is provided at the lower part of the positioning base plate 36. The top surface of the coarse positioning block 39 is a contoured support surface. During press assembly, the coarse positioning block 39 can support the shape of the electronic throttle valve, ensure the clamping stability of the electronic throttle valve, and avoid stress on the electronic throttle valve shaft.

[0024] A spinning cylinder 310 is arranged on the fixture bottom plate 33, and the pressing block 38 is arranged on the pressing arm of the spinning cylinder 310, so that the clamping is convenient. An end stop block 311 is arranged on the upper end of the fixture fixing plate 32 to prevent the fixture fixing plate 32 from being lifted up too high.

[0025] In order to achieve precise rotation and transposition of the turntable 31, a reduction motor 312 is connected to the bottom of the turntable 1 of this embodiment, and the reduction motor 312 is connected to a cam divider 313. The cam divider 313 is provided with a divider signal disk 314 and a proximity switch 315. The proximity switch 315 senses the divider signal disk 314 to determine the rotation angle of the turntable 31.

[0026] like Figure 3 As shown, the pre-pressing assembly 6 includes a support arm 61, a downward pressing cylinder 62, and a core pressing head 63. The downward pressing cylinder 62 is inverted and fixed on the support arm 61, and the core pressing head 63 is arranged at the front end of the piston rod of the downward pressing cylinder 62. The core pressing head 63 is connected to a transverse fixing plate 64, and a guide column 65 is arranged on the transverse fixing plate 64. The guide column 65 is slidably matched with a linear bearing 66 on the support arm 61, and the upper end of the guide column 65 is connected to a limiting plate 67. The support arm 61 is provided with a limiting rod 68 that abuts against the limiting plate 67 for limiting.

[0027] like Figure 4 The automatic alignment assembly 5 shown includes a movable sleeve 52, a guide rod 53, a connecting plate 54, a servo motor 55, and a lifting cylinder 56. There are two guide rods 53, which are arranged at intervals at the bottom of the operating table 2, and a cylinder mounting plate 57 is connected to the lower ends of the two guide rods 53. The lifting cylinder 56 is arranged on the cylinder mounting plate 57. The two ends of the connecting plate 54 are slidably arranged on the guide rod 53 through guide sleeves 58, the movable sleeve 52 is fixedly arranged on the top surface of the connecting plate 54, and the servo motor 55 is suspended below the connecting plate 54. The output shaft of the servo motor 55 is connected to a rotating shaft 510 through a coupling 59, and the rotating shaft 510 is rotatably matched with the movable sleeve 52. The piston rod of the lifting cylinder 56 is connected to the servo motor 55, and the lifting and lowering of the servo motor and the connecting plate 54 can be controlled by the extension and retraction of the lifting cylinder 56. A rotating joint 511 is provided at the upper end of the rotating shaft 510 in a floating manner. A screwdriver bit corresponding to the groove on the electronic throttle is provided at the upper end of the rotating joint 511, so that the screwdriver bit is inserted into the groove of the rotating shaft on the electronic throttle and drives it to rotate to the initial position. A sensor for sensing the rotation position of the rotating joint 511 is provided on the operating table 2, and the sensor senses whether the rotating joint 511 reaches the predetermined position.

[0028] In order to ensure that the lifting and lowering of the movable sleeve 52 is not blocked, the operating table 2 is provided with a through hole through which the movable sleeve 52 can extend.

[0029] like Figure 4 A motor fixing seat 513 is provided below the connecting plate 54, and the motor fixing seat 513 is connected to the bottom surface of the connecting plate 54 through the support rods 514 arranged at the four corners, and the servo motor 55 is installed on the bottom surface of the motor fixing seat 513, and this structure facilitates the installation of the servo motor 55 and the coupling. A pull rod 515 is also connected to the bottom surface of the motor fixing seat 513, and a U-shaped connecting plate 516 is connected to the lower end of the pull rod 515, and the U-shaped connecting plate 516 is limitedly connected to the cylinder joint 517 installed on the piston rod of the jacking cylinder 56, and this structure enables the piston rod of the jacking cylinder 56 to be quickly connected to the servo motor 55.

[0030] In order to ensure high position rotation accuracy of the rotating shaft 510, a deep groove ball bearing is provided in the movable sleeve 52, and the rotating shaft 510 cooperates with the inner ring of the deep groove ball bearing.

[0031] like Figure 4 As shown, the lower end of the rotating joint 511 is sleeved on the upper end of the rotating shaft 510, and a spring 518 is arranged between the rotating joint 511 and the end surface of the rotating shaft 510. The upper part of the rotating shaft 510 has a vertical waist-shaped hole, and the rotating joint 511 is provided with a pin shaft 519 with a limited position in the waist-shaped hole.

[0032] The method of using the utility model is that when the workpiece is clamped and rotated to the top of the device, the piston rod of the lifting cylinder 6 extends out to drive the rotary joint 11 to rise. After rising to the right position, the servo motor 5 drives the rotating shaft 10 to rotate, so that the upper end of the rotary joint 11 can automatically and smoothly insert into the groove on the rotating shaft of the electronic throttle through the action of rotation and floating spring, and then the sensor 12 is triggered by the pin shaft 19 on the rotary joint 11, so as to judge that the rotating shaft of the electronic throttle is rotated to the initial position, and then the servo motor 5 stops working and the lifting cylinder 6 retracts.

[0033] The translation assembly 42 includes a first linear guide slider assembly 421 and a screw nut assembly 422 which are disposed on the gantry 41 and arranged laterally. A transverse sliding plate 423 is installed on the slider of the first linear guide slider assembly 421, and the nut of the screw nut assembly 422 is connected to the transverse sliding plate 423. A motor 424 for driving the screw nut assembly 422 is disposed on the gantry 41.

[0034] A vertically arranged second linear guide slider assembly 45 is provided on the transverse slide 423, a first tooling fixing plate 46 is provided on the slider of the second linear guide slider assembly 45, a first lifting cylinder 47 for driving the first tooling fixing plate 46 to slide vertically is provided on the transverse slide 423, the hot air module 43 is provided on the first tooling fixing plate 46, and a buffer 48 facing the lower end of the first tooling fixing plate 46 is provided on the transverse slide 423.

[0035] A vertically arranged third linear guide slider assembly 49 is provided on the transverse slide 423, a second tooling fixing plate 410 is provided on the slider of the third linear guide slider assembly 49, a second lifting cylinder 411 for driving the second tooling fixing plate 410 to slide vertically is provided on the transverse slide 423, and the cold riveting module 44 is fixedly provided on the second tooling fixing plate 410.

[0036] A defective product bin 7 is arranged on the operating table 2. The defective product bin 7 is tilted through the base. A hinged cover plate 71 is arranged at the upper opening of the defective product bin 7. An openable rear door is arranged at the lower part of the defective product bin 7. A counting sensor 72 is arranged at the upper opening of the defective product bin 7.

[0037] The front of the rack 1 is provided with an operation window, the other sides of the rack 1 are provided with shielding plates or cabinet doors, the sides of the operation window are provided with gratings 8, a control panel 9 is provided above the operation window, and the top surface of the rack 1 is provided with an exhaust fan 10, which is connected to the top of the second clamping station through a smoke exhaust pipe.

[0038] A scanning gun 11 and an emergency stop button 12 are provided on the operating console 2 .

[0039] The technical solutions provided by the embodiments of the present invention are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, according to the embodiments of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A hot air cooling riveting machine, characterized in that: The invention comprises a frame (1), wherein the frame (1) is provided with an operating table (2), a transfer fixture (3) is arranged in the middle of the operating table (2), a first clamping station and a second clamping station are symmetrically distributed on the transfer fixture (3), a pre-pressing component (6) is arranged above the first clamping station, a hot air cooling riveting component (4) is arranged above the second clamping station, and an automatic alignment component (5) is arranged below the second clamping station, and the hot air cooling riveting component (4) comprises a plurality of components arranged on the operating table (2); A gantry (41) is provided on the gantry (41), a translation assembly (42) is provided on the translation assembly (42), a vertically movable hot air module (43) and a vertically movable cold riveting module (44) are provided on the translation assembly (42), the hot air module (43) and the cold riveting module (44) are arranged in parallel, the hot air module (43) has three hot air guns (430) arranged in a triangle, and the cold riveting module (44) has three cold riveting heads (440) whose distribution positions are the same as those of the hot air guns (430).

2. A hot air cooling riveting machine according to claim 1, characterized in that: The transfer fixture (3) comprises a turntable (31), a fixture fixing plate (32), and a fixture base plate (33), wherein the number of the fixture fixing plates (32) is two and they are symmetrically erected on the turntable (31); the number of the fixture base plates (33) is two, and vertically arranged linear guide rails (34) are arranged on the relatively outer sides of the fixture fixing plates (32); the fixture base plate (33) is slidably arranged on the linear guide rails (34) through a slider; a spring (35) is arranged between the lower end surface of the fixture base plate (33) and the top surface of the turntable (31); a positioning base plate (36) is arranged on the fixture base plate (33); a group of positioning pins (37) are arranged diagonally on the positioning base plate (36); and a pressure block (38) is arranged in the opposite direction of the positioning base plate (36).

3. A hot air cooling riveting machine according to claim 1, characterized in that: The pre-pressing assembly (6) comprises a support arm (61), a downward pressing cylinder (62), and a magnetic core pressing head (63); the downward pressing cylinder (62) is inverted and fixedly arranged on the support arm (61); the magnetic core pressing head (63) is arranged at the front end of the piston rod of the downward pressing cylinder (62); the magnetic core pressing head (63) is connected to a transverse fixed plate (64); a guide column (65) is arranged on the transverse fixed plate (64); the guide column (65) is slidably matched with a linear bearing (66) on the support arm (61); the upper end of the guide column (65) is connected to a limiting plate (67); and a limiting rod (68) is arranged on the support arm (61) for abutting against the limiting plate (67) for limiting the position.

4. A hot air cooling riveting machine according to claim 1, characterized in that: The automatic alignment component (5) comprises a movable sleeve (52), a guide rod (53), a connecting plate (54), a servo motor (55), and a lifting cylinder (56). The number of the guide rods (53) is two, and they are arranged at intervals at the bottom of the operating table (2). The lower end of the guide rod (53) is connected to a cylinder mounting plate (57), and the lifting cylinder (56) is arranged on the cylinder mounting plate (57). The two ends of the connecting plate (54) are slidably arranged on the guide rod (53) through a guide sleeve (58). The movable sleeve (52) is fixedly arranged on the connecting plate (54). The servo motor (55) is suspended below the connecting plate (54); the output shaft of the servo motor (55) is connected to a rotating shaft (510) via a coupling (59); the rotating shaft (510) is rotationally matched with the movable sleeve (52); the piston rod of the lifting cylinder (56) is connected to the servo motor (55); a rotating joint (511) is floatingly arranged at the upper end of the rotating shaft (510); the upper end of the rotating joint (511) has a screwdriver bit corresponding to a groove on the electronic throttle; and a sensor (512) for sensing the rotation position of the rotating joint (511) is arranged on the operating table (2).

5. The hot air cooling riveting machine according to claim 1, characterized in that: The translation assembly (42) comprises a first linear guide slider assembly (421) and a lead screw nut assembly (422) which are arranged on the gantry (41) and are arranged transversely, a transverse sliding plate (423) being installed on the slider of the first linear guide slider assembly (421), a nut of the lead screw nut assembly (422) being connected to the transverse sliding plate (423), and a motor (424) for driving the lead screw nut assembly (422) being arranged on the gantry (41).

6. A hot air cooling riveting machine according to claim 5, characterized in that: The transverse slide plate (423) is provided with a second linear guide slider assembly (45) arranged vertically, the slider of the second linear guide slider assembly (45) is provided with a first tooling fixing plate (46), the transverse slide plate (423) is provided with a first lifting cylinder (47) for driving the first tooling fixing plate (46) to slide vertically, the hot air module (43) is provided on the first tooling fixing plate (46), and the transverse slide plate (423) is provided with a buffer (48) facing the lower end of the first tooling fixing plate (46).

7. The hot air cooling riveting machine according to claim 5, characterized in that: The transverse sliding plate (423) is provided with a third linear guide slider assembly (49) arranged vertically, the slider of the third linear guide slider assembly (49) is provided with a second tooling fixing plate (410), the transverse sliding plate (423) is provided with a second lifting cylinder (411) for driving the second tooling fixing plate (410) to slide vertically, and the cold riveting module (44) is fixedly provided on the second tooling fixing plate (410).

8. The hot air cooling riveting machine according to claim 1, characterized in that: A defective product bin (7) is arranged on the operating table (2), the defective product bin (7) is tilted via a base, a hinged cover plate (71) is arranged at the upper opening of the defective product bin (7), an openable rear door is arranged at the lower part of the defective product bin (7), and a counting sensor (72) is arranged at the upper opening of the defective product bin (7).

9. The hot air cooling riveting machine according to claim 1, characterized in that: The front of the frame (1) is provided with an operation window, the other sides of the frame (1) are provided with shielding plates or cabinet doors, the sides of the operation window are provided with gratings (8), a control panel (9) is provided above the operation window, and the top surface of the frame (1) is provided with an exhaust fan (10), and the exhaust fan (10) is connected to the top of the second clamping station through a smoke exhaust pipe.

10. The hot air cooling riveting machine according to claim 1, characterized in that: The operating table (2) is provided with a scanning gun (11) and an emergency stop button (12).

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