Double-station multi-point type automatic screw machine for electric drill shell production

Abstract

The invention relates to the technical field of automatic screw machines, in particular to a double-station multi-point type automatic screw machine for electric drill shell production, which comprises a base, two double-station switching mechanisms which alternately work are symmetrically arranged on the top of the base left and right, a rack is fixedly mounted on the rear side of the top of the base, and a control module is arranged on the front side of the top of the rack. The electric drill shell is subjected to primary clamping and fixing through the two positioning seats, secondary clamping and fixing of the electric drill shell are achieved through compression joint and fixing of the lifting rotating assembly from top to bottom, the clamping stability of the electric drill shell is improved, rotation of the clamped electric drill shell is achieved through a second servo motor, and the clamping efficiency of the electric drill shell is improved. Through the arrangement of the buffer correction assembly, when the screwdriver rod makes contact with the tops of the screws, the buffer correction assembly shrinks, and along with rotation of the first servo motor, the bottom of the screwdriver rod is accurately inserted into a notch in the tops of the screws in an aligned mode; and the phenomenon that the screw slips when the screw is assembled is avoided.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of automatic screw machines, and particularly relates to a double-station multi-point automatic screw machine for electric drill shell production. BACKGROUND

[0002] An automatic screw machine is an industrial device for automatically tightening or locking screws, and is widely used in industries such as electronic manufacturing, household appliances, automobiles, communication equipment, medical devices and other industries that require precise assembly. It can significantly improve production efficiency, ensure the consistency of locking quality, and reduce labor costs. During the production process of the electric drill shell, an automatic screw machine is usually used for tightening. However, the existing device has the following problems when assembling screws on the electric drill shell: 1. The electric drill shell contains multiple screws that need to be tightened, and the screws that need to be tightened are usually on mutually perpendicular surfaces. Therefore, when the automatic screw machine tightens the screws, the shell needs to be disassembled from the clamp after the screws on one surface are tightened, and then the shell needs to be clamped again for tightening the screws on the other surface. This requires two times of disassembly and clamping, which is time-consuming and labor-intensive, and the work efficiency is low.

[0003] 2. When assembling screws on the electric drill shell, the shell usually needs to be stably clamped. In order to maintain the stability of clamping, multi-point clamping is required. However, the clamps of multi-point clamping are independent of each other, and clamping and loosening need to be operated respectively, which is low in work efficiency. In addition, when the existing clamp is pressed and clamped, the clamping head is usually straight up and down, so that the pressure head is easily interfered with the electric drill shell when the electric drill shell is taken, thereby making it inconvenient to take. SUMMARY

[0004] The purpose of the present application is to provide a double-station multi-point automatic screw machine for electric drill shell production, which has a simple structure and a reasonable design.

[0005] The application achieves the above-mentioned purposes through the following technical solutions: A double-station multi-point automatic screw machine for electric drill shell production, comprising a base, the top of the base is provided with two double-station switching mechanisms that work alternately, the rear side of the top of the base is fixedly installed with a rack, the front side of the top of the rack is provided with a control module, and the front side of the top of the base is installed with two switches. Further comprising: Two fixed plates are fixedly installed on the rear side of the top of the base, the top of the two fixed plates is commonly fixed with a first electric sliding rail, the front side of the first electric sliding rail is provided with two buffer rotating mechanisms, and the lower part of the buffer rotating mechanism is provided with a pre-clamping mechanism for clamping and fixing the screws. The clamping mechanism is fixedly arranged on the top of the double-station switching mechanism and used for clamping the electric drill shell, the double-station switching mechanism comprises two second electric sliding rails which are fixedly arranged on the top of the base, two second electric sliding blocks are slidably connected to each second electric sliding rail, and a U-shaped frame is fixedly connected to the top of the two second electric sliding blocks.

[0006] Preferably, a second servo motor is fixedly arranged on the top of the rear side of the U-shaped frame, a fixed shaft is rotatably arranged on the output end of the second servo motor and fixedly arranged on the rear side of the U-shaped frame, a turnover plate is fixedly arranged on the fixed shaft, a third connecting plate is fixedly arranged on the second electric sliding block on the front side, a second drag chain is fixedly arranged on the side of the third connecting plate away from the second electric sliding block, and the second drag chain is arranged on the top of the base.

[0007] Preferably, the clamping mechanism comprises a first positioning seat and a second positioning seat which are fixedly arranged on the top of the turnover plate, an installation arm is fixedly arranged on the side of the bottom of the turnover plate away from the center of the base, a hydraulic cylinder is fixedly arranged on the top end of the installation arm, and a lifting and rotating assembly is arranged between the output end of the hydraulic cylinder and the turnover plate.

[0008] Preferably, the lifting and rotating assembly comprises two fixed arms which are fixedly arranged on the bottom of the turnover plate, a first fixed ring is fixedly arranged on the top of the fixed arm, a limiting guide cylinder is fixedly arranged in the center of the first fixed ring, a limiting pin is fixedly arranged on the inner wall of the limiting guide cylinder, a lifting rod is movably arranged in the limiting guide cylinder, a limiting sliding groove is arranged on the lifting rod, and the limiting sliding groove is slidably connected to the limiting pin.

[0009] Preferably, a second connecting plate is rotatably arranged on the bottom of the two lifting rods, the top center of the second connecting plate is fixedly connected to the bottom of the output end of the hydraulic cylinder, a fixed head is fixedly arranged on the top of the lifting rod, and a pressing plate used for pressing and fixing the electric drill shell is fixedly arranged on one side of the outer portion of the fixed head.

[0010] Preferably, the buffer rotating mechanism comprises a first electric sliding block which is slidably arranged on the first electric sliding rail, a side plate is fixedly arranged on the front side of the first electric sliding block, a reinforcing block is fixedly arranged on the top of the rear side of the side plate, an extension cylinder is fixedly arranged on the top of the front side of the side plate, a connecting head is fixedly arranged on the output end of the extension cylinder, a limiting sliding rail is fixedly arranged on the middle of the front side of the side plate, a first connecting plate is slidably arranged on the limiting sliding rail through a limiting sliding block, the side edge of the first connecting plate is connected to the connecting head, a first servo motor is fixedly arranged on the front side of the first connecting plate, a buffer correcting assembly is arranged on the output end of the first servo motor, the first electric sliding rail is provided with a first drag chain, and one end of the first drag chain is fixedly connected to the rear side of the first electric sliding block.

[0011] Preferably, the buffer correction assembly comprises a connecting rod fixedly installed at the bottom of the output end of the first servo motor, a limiting sleeve fixedly installed at the bottom of the connecting rod, a cross slot formed in the limiting sleeve, a cross mounting head slidably installed in the cross slot, and a spring fixedly installed at the top of the cross slot.

[0012] Preferably, a fixed block is fixedly installed at the middle of the cross slot, a screwdriver rod is fixedly installed at the center of the bottom of the cross mounting head, and the screwdriver rod is movably penetrated through the center of the bottom of the limiting sleeve.

[0013] Preferably, the pre-clamping mechanism comprises an installation plate fixedly installed at the bottom of the front side of the side plate, and a pre-clamping assembly arranged in the middle of the installation plate, wherein the pre-clamping assembly comprises a connecting pipe fixedly penetrated through the middle of the installation plate, two installation grooves symmetrically formed at the bottom of the connecting pipe, two installation pins fixedly installed in the installation grooves, two connecting blocks rotatably installed on each installation pin, two connecting blocks in each group, a conical clamping head fixedly installed at the bottom of the two connecting blocks in each group for clamping and fixing the screw, and a spring fixedly installed between the connecting block and the inner wall of the installation groove.

[0014] Preferably, a plug-in pipe is fixedly installed at one side of the connecting pipe, a second fixing ring is fixedly sleeved on the outside of the plug-in pipe, a connecting shaft is fixedly installed on the outside of the second fixing ring, the connecting shaft is fixedly installed at the bottom of the front side of the side plate, a conveying air pipe is fixedly plugged at the top of the plug-in pipe, and one end of the conveying air pipe away from the plug-in pipe is connected with the discharging end of the screw discharging machine.

[0015] The present application has the following advantages: Compared with the prior art, the present application realizes two-stage clamping and fixing of the electric drill shell through the two positioning seats for one-stage clamping and fixing of the electric drill shell, the lifting and rotating assembly for downward pressure connection, and the single hydraulic cylinder for synchronous lifting and rotating of the two pressing plates, the two pressing plates are synchronously rotated and pressed downward during clamping, and the two pressing plates are synchronously rotated and lifted upward during dismounting, thereby realizing the avoidance between the pressing plate and the electric drill shell compared with the traditional straight-up and straight-down pressure connection, and facilitating the taking.

[0016] Compared with the prior art, the present application realizes two-stage clamping and fixing of the electric drill shell through the two positioning seats for one-stage clamping and fixing of the electric drill shell, the lifting and rotating assembly for downward pressure connection, and the single hydraulic cylinder for synchronous lifting and rotating of the two pressing plates, the two pressing plates are synchronously rotated and pressed downward during clamping, and the two pressing plates are synchronously rotated and lifted upward during dismounting, thereby realizing the avoidance between the pressing plate and the electric drill shell compared with the traditional straight-up and straight-down pressure connection, and facilitating the taking.

[0017] Compared with the prior art, the present application realizes two-stage clamping and fixing of the electric drill shell through the two positioning seats for one-stage clamping and fixing of the electric drill shell, the lifting and rotating assembly for downward pressure connection, and the single hydraulic cylinder for synchronous lifting and rotating of the two pressing plates, the two pressing plates are synchronously rotated and pressed downward during clamping, and the two pressing plates are synchronously rotated and lifted upward during dismounting, thereby realizing the avoidance between the pressing plate and the electric drill shell compared with the traditional straight-up and straight-down pressure connection, and facilitating the taking.

[0018] Different from the prior art, the screwdriver rod bottom is accurately positioned and inserted into the slot of the screw top by the contraction of the buffer correction assembly when the screwdriver rod contacts the screw top and the rotation of the No. 1 servo motor, so that the phenomenon of screw sliding during assembly is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is the overall structure perspective view of the present application; Figure 2 is the partial structure perspective view of the present application; Figure 3 is the No. 1 electric sliding rail, buffer rotating mechanism and pre-clamping mechanism perspective view of the present application; Figure 4 is the buffer rotating mechanism and pre-clamping mechanism exploded view of the present application; Figure 5 is the No. 1 servo motor and buffer correction assembly partial sectional view of the present application; Figure 6 is the buffer correction assembly of the present application; Figure 5 is the A area enlarged schematic view of the present application; Figure 7 is the pre-clamping mechanism perspective view of the present application; Figure 8 is the buffer correction assembly of the present application; Figure 7 is the B area enlarged schematic view of the present application; Figure 9 is the pre-clamping mechanism sectional view of the present application; Figure 10 is the clamping mechanism and double-station switching mechanism perspective view of the present application; Figure 11 is the clamping mechanism and double-station switching mechanism partial sectional perspective view of the present application; Figure 12 is the buffer correction assembly of the present application; Figure 11 is the C area enlarged schematic view of the present application; Figure 13 is the clamping mechanism and double-station switching mechanism exploded view of the present application.

[0020] As shown in the figure: 1, the base; 2, the rack; 3, the first electric slide rail; 4, the control module; 5, the buffer rotation mechanism; 51, the telescopic cylinder; 52, the side plate; 53, the first servo motor; 54, the buffer correction assembly; 541, the screwdriver rod; 542, the limiting sleeve; 543, the connecting rod; 544, the spring; 545, the cross mounting head; 546, the fixed block; 547, the cross groove; 55, the limiting slide rail; 56, the connecting head; 57, the first electric sliding block; 58, the first connecting plate; 6, the clamping mechanism; 61, the first positioning seat; 62, the second positioning seat; 63, the second connecting plate; 64, the hydraulic cylinder; 65, the lifting rotation assembly; 651, the pressing plate; 652, the fixed head; 653, the lifting rod; 654, the limiting guide cylinder; 655, the limiting sliding groove; 656, the fixed arm; 657, the limiting pin; 658, the first fixed ring; 66, the mounting arm; 7, the double-station switching mechanism; 71, the second electric slide rail; 72, the second drag chain; 73, the third connecting plate; 74, the second electric sliding block; 75, the U-shaped frame; 76, the second servo motor; 77, the turnover plate; 78, the fixed shaft; 8, the switch; 9, the pre-clamping mechanism; 91, the conveying air pipe; 92, the second fixed ring; 93, the connecting shaft; 94, the mounting plate; 95, the plug-in pipe; 96, the pre-clamping assembly; 961, the connecting pipe; 962, the mounting groove; 963, the conical clamping head; 964, the elastic sheet; 965, the connecting block; 966, the mounting pin; 10, the fixed plate; 11, the reinforcing block; 12, the first drag chain. DETAILED DESCRIPTION

[0021] The application will be further described in detail below with reference to the drawings. It is necessary to point out here that the following detailed description is only used to further illustrate the application and cannot be understood as limiting the scope of protection of the application. Those skilled in the art can make some non-essential improvements and adjustments to the application according to the above application content.

[0022] Embodiment: please refer to Figure 1 and Figure 2 A double-station multi-point automatic screw machine for electric drill shell production comprises a base 1, two double-station switching mechanisms 7 symmetrically arranged on the top of the base 1 and alternately working, a rack 2 fixedly installed on the top rear side of the base 1, a control module 4 arranged on the top front side of the rack 2, two switches 8 symmetrically installed on the top front side of the base 1, two fixed plates 10 symmetrically and fixedly installed on the top rear side of the base 1, a first electric slide rail 3 fixedly installed on the top of the two fixed plates 10, two buffer rotation mechanisms 5 symmetrically arranged on the front side of the first electric slide rail 3, a pre-clamping mechanism 9 arranged on the lower part of the buffer rotation mechanism 5 and used for clamping and fixing the screw, and a clamping mechanism 6 fixedly arranged on the top of the double-station switching mechanism 7 and used for clamping the electric drill shell.

[0023] In use, the clamping mechanism 6 is used to achieve the clamping and fixing of the electric drill shell, and the cooperation of the clamping mechanism 6 and the double-station switching mechanism 7 realizes the screw assembly of the double-station electric drill shell, which is more efficient than the traditional single-station mode. The rack 2 is used to fix the control module 4. The switch 8 is electrically connected with the control module 4 and is used to open and close the device. The control module 4 is used to control the operation of the electrical equipment in each mechanism and realize the orderly work of the automatic screw machine. The buffer rotating mechanism 5 is used to realize the accurate alignment between the screw and the screwdriver bit. The pre-clamping mechanism 9 is used to pre-clamp and fix the screw.

[0024] Please refer to Figure 2 , Figure 10 and Figure 11 , the double-station switching mechanism 7 includes two No. 2 electric sliding rails 71 symmetrically and fixedly installed on the top of the base 1. Each No. 2 electric sliding rail 71 is slidably connected with two No. 2 electric sliding blocks 74. The top of the two No. 2 electric sliding blocks 74 is fixedly connected with a U-shaped frame 75. The rear top of the U-shaped frame 75 is fixedly installed with a No. 2 servo motor 76. The output end of the No. 2 servo motor 76 is rotatably penetrated through the rear of the U-shaped frame 75 and fixedly installed with a fixed shaft 78. The fixed shaft 78 is rotatably installed on the U-shaped frame 75. The fixed shaft 78 is fixedly installed with a turnover plate 77. The No. 2 electric sliding block 74 located on the front side is fixedly installed with a No. 3 connecting plate 73. The side of the No. 3 connecting plate 73 away from the No. 2 electric sliding block 74 is fixedly installed with a No. 2 drag chain 72. The No. 2 drag chain 72 is arranged on the top of the base 1.

[0025] In use, first, start the No. 2 electric sliding rail 71. The cooperation of the No. 2 electric sliding rail 71 and the No. 2 drag chain 72 drives the No. 2 electric sliding block 74 to move forward to the working position, and synchronously drives the U-shaped frame 75 and the No. 2 servo motor 76, the fixed shaft 78 and the turnover plate 77 on it to move forward to the feeding area.

[0026] Please refer to Figure 2 , Figure 10 and Figure 13 , the clamping mechanism 6 includes a No. 1 positioning seat 61 and a No. 2 positioning seat 62 fixedly installed on the top of the turnover plate 77. The top of the No. 1 positioning seat 61 and the No. 2 positioning seat 62 is used to clamp the electric drill shell. The bottom of the turnover plate 77 away from the center of the base 1 is fixedly installed with a mounting arm 66. The top end of the mounting arm 66 is fixedly installed with a hydraulic cylinder 64. The output end of the hydraulic cylinder 64 and the turnover plate 77 are commonly provided with a lifting and rotating assembly 65.

[0027] Please refer to Figure 10 , Figure 11 , Figure 12 and Figure 13, the lifting rotary assembly 65 comprises two fixed arms 656 fixedly installed on the bottom of the turnover plate 77 in front-rear symmetry, a first fixed ring 658 is fixedly installed on the top of the fixed arms 656, a limiting guide cylinder 654 is fixedly sleeved in the center of the first fixed ring 658, a limiting pin 657 is fixedly installed on the inner wall of the limiting guide cylinder 654, lifting rods 653 are movably installed in the limiting guide cylinder 654, limiting sliding grooves 655 are formed on the lifting rods 653, and the limiting sliding grooves 655 and the limiting pin 657 are in sliding connection, a second connecting plate 63 is rotatably installed at the bottom of the two lifting rods 653, the top center of the second connecting plate 63 is fixedly connected with the bottom of the output end of the hydraulic cylinder 64, a fixed head 652 is fixedly installed on the top of the lifting rod 653, and a pressing plate 651 for pressing and fixing the electric drill shell is fixedly installed on one side of the outer portion of the fixed head 652.

[0028] In use, the second electric sliding rail 71 moves the clamping mechanism 6 to the front, at this time the electric drill shell is placed on the first positioning seat 61 and the second positioning seat 62, and the first-stage fixing of the electric drill shell is realized, in the initial state, the pressing plate 651 is in the offset state, that is, the pressing plate 651 is not above the first positioning seat 61 and the second positioning seat 62, at this time the hydraulic cylinder 64 is started, the output end of the hydraulic cylinder 64 starts to elongate, and then drives the second connecting plate 63 and the lifting rods 653 thereon to move downward, since the limiting sliding grooves 655 and the limiting pin 657 are in sliding connection, when the lifting rods 653 move downward, the two lifting rods 653 are synchronously driven to rotate in opposite directions, and then the fixed head 652 and the pressing plate 651 thereon are driven to move downward, so that the pressing plate 651 rotates downward, the limiting sliding grooves 655 comprise a curved section and a vertical section, when the pressing plate 651 is rotated to the top of the first positioning seat 61 and the second positioning seat 62, with the continuous downward movement of the lifting rods 653, the limiting pin 657 slides downward in the vertical section of the limiting sliding grooves 655, the pressing plate 651 is used to realize the downward pressing and fixing of the electric drill shell from top to bottom, the second-stage fixing of the electric drill shell is realized, and the stability of clamping is improved; when the screw assembly is completed, the output end of the hydraulic cylinder 64 is retracted, the pressing plate 651 is lifted and rotated, the pressing plate 651 is loosened to press the electric drill shell, and meanwhile the pressing plate 651 is avoided, so that the electric drill shell is convenient to take, when the screw assembly on one side of the electric drill shell is completed, the clamping is kept fixed, the second servo motor 76 is started, the output end of the second servo motor 76 drives the fixed shaft 78 and the turnover plate 77 thereon to rotate by ninety degrees, and indirectly drives the electric drill shell to rotate by ninety degrees, at this time the other side of the electric drill shell is automatically assembled with screws, and it is not necessary to clamp again, time and labor are saved, and the working efficiency is high.

[0029] Please refer to Figure 3 , Figure 7 and Figure 8The pre-clamping mechanism 9 comprises a mounting plate 94, a pre-clamping assembly 96 is arranged in the middle of the mounting plate 94, the pre-clamping assembly 96 comprises a connecting pipe 961 fixedly penetrating the middle of the mounting plate 94, two mounting grooves 962 are symmetrically arranged at the outer bottom of the connecting pipe 961, a mounting pin 966 is fixedly installed in each of the mounting grooves 962, two connecting blocks 965 are rotatably installed on each of the mounting pins 966, the two connecting blocks 965 in each group are fixedly connected with a conical clamping head 963 used for clamping and fixing the screw, and the elastic sheet 964 is fixedly installed between the connecting block 965 and the inner wall of the mounting groove 962.

[0030] Please refer to Figure 7 、 Figure 8 and Figure 9 The connecting pipe 961 is fixedly connected with the plug-in pipe 95, the plug-in pipe 95 is fixedly connected with the second fixing ring 92, the second fixing ring 92 is fixedly connected with the connecting shaft 93, the connecting shaft 93 is fixedly installed at the bottom of the front side of the side plate 52, the plug-in pipe 95 is movably connected with the conveying air pipe 91, and the conveying air pipe 91 is connected with the discharging end of the screw discharging machine.

[0031] When the electric drill shell is clamped, the second electric sliding rail 71 and the second electric sliding block 74 drive the electric drill shell to move backward until the electric drill shell moves to the lower side of the pre-clamping mechanism 9, then the screw discharging machine is started, the screw is conveyed into the conveying air pipe 91 with the screw tip downward, the screw tip enters into the plug-in pipe 95 under the action of the air pressure, then enters into the connecting pipe 961, and the screw is clamped in the conical clamping head 963, the connecting block 965 is clamped in the center under the action of the elastic force of the elastic sheet 964, the conical clamping head 963 is clamped in the center, and the two conical clamping heads 963 are used for clamping and fixing the screw, so that the automatic discharging of the screw is realized.

[0032] Please refer to Figure 3 、 Figure 4 and Figure 5The buffer rotating mechanism 5 comprises a first electric sliding block 57 slidably connected to the first electric sliding rail 3, a side plate 52 fixedly installed at the front side of the first electric sliding block 57, a reinforcing block 11 fixedly installed at the top of the rear side of the side plate 52, the reinforcing block 11 being used for enhancing the connecting strength between the side plate 52 and the first electric sliding block 57, a mounting plate 94 fixedly installed at the bottom of the front side of the side plate 52, a telescopic air cylinder 51 fixedly installed at the top of the front side of the side plate 52, a connecting head 56 fixedly installed at the output end of the telescopic air cylinder 51, a limiting sliding rail 55 fixedly installed at the middle of the front side of the side plate 52, a first connecting plate 58 slidably connected to the limiting sliding rail 55 through a limiting sliding block, the connecting head 56 being connected to one side of the first connecting plate 58, a first servo motor 53 fixedly installed at the front side of the first connecting plate 58, a buffer correction assembly 54 provided at the output end of the first servo motor 53, a first drag chain 12 provided at the top of the first electric sliding rail 3, and the first drag chain 12 being fixedly connected to the rear side of the first electric sliding block 57.

[0033] Please refer to Figure 4 、 Figure 5 and Figure 6 The buffer correction assembly 54 comprises a connecting rod 543 fixedly installed at the bottom of the output end of the first servo motor 53, a limiting sleeve 542 fixedly installed at the bottom of the connecting rod 543, a cross groove 547 formed in the limiting sleeve 542, a cross mounting head 545 slidably installed in the cross groove 547, a spring 544 fixedly installed at the top of the cross groove 547, the spring 544 being arranged between the top of the cross mounting head 545 and the cross groove 547, a fixed block 546 fixedly installed at the middle of the cross groove 547, a screwdriver rod 541 fixedly installed at the bottom center of the cross mounting head 545, the screwdriver rod 541 being movably penetrated through the bottom center of the limiting sleeve 542, and the screwdriver rod 541 being provided with magnetic force at the bottom, so as to facilitate the adsorption of screws.

[0034] When the screw is stably clamped into the conical clamping head 963, the telescopic cylinder 51 is started, the output end of the telescopic cylinder 51 drives the connecting head 56 and the first connecting plate 58 to move downward, in turn drives the first servo motor 53 and the buffer correction assembly 54 to move downward along the limiting slide rail 55, in turn drives the screwdriver rod 541 to move downward, until the bottom of the screwdriver rod 541 contacts the top of the screw on the conical clamping head 963, the screwdriver rod 541 continues to move downward, at this time the screwdriver rod 541 and the cross mounting head 545 thereon move upward, synchronously extruding the spring 544, keeping a certain pressing force on the top of the screw, and at this time the elastic force of the spring 544 is not enough to overcome the clamping of the spring sheet 964 and the conical clamping head 963 on the screw, the first servo motor 53 is started, the output end of the first servo motor 53 drives the connecting rod 543 and the limiting sleeve 542 thereon to rotate slowly, synchronously drives the cross mounting head 545 and the screwdriver rod 541 thereon to rotate, until the blade at the bottom of the screwdriver rod 541 is accurately inserted into the slot at the top of the screw, ensuring the accurate insertion between the screwdriver rod 541 and the screw, after insertion, at this time, under the cooperation of the first drag chain 12, the first electric slide rail 3 and the first electric sliding block 57, the screwdriver rod 541 is driven to move along the first electric slide rail 3 to the position of the electric drill shell where the screw is to be assembled, at this time the output end of the telescopic cylinder 51 continues to elongate, indirectly driving the screwdriver rod 541 and the screw to move downward, at this time the downward force overcomes the clamping of the spring sheet 964 and the conical clamping head 963 on the screw, then the screw adsorbed at the bottom of the screwdriver rod 541 is inserted into the threaded hole of the electric drill shell, at this time the top of the cross mounting head 545 is attached to the bottom of the fixed block 546, the fixed block 546 is used to keep the resistance of the cross mounting head 545, then the first servo motor 53 is started, the output end of the first servo motor 53 indirectly drives the screwdriver rod 541 to rotate, in turn installs the screw on the electric drill shell, realizing automatic screw assembly, when assembling the screw, the screwdriver rod 541 extrudes the insertion pipe 95 out of the connecting pipe 961 after passing through the connecting pipe 961, in turn drives the insertion pipe 95 to rotate around the connecting shaft 93, at this time the screw cannot enter the connecting pipe 961 through the insertion pipe 95, when the screw assembly is completed, the screw is extracted from the connecting pipe 961, at this time the screw feeding machine is pneumatically fed, the screw enters the insertion pipe 95, at this time the insertion pipe 95 reverses, at this time the screw is clamped and fixed in the conical clamping head 963, after one side of the screw is installed, the second servo motor 76 is started, the second servo motor 76 drives the electric drill shell clamped thereon to rotate ninety degrees, automatically assembling screws on the other side of the electric drill shell, realizing double-sided screw assembly.

[0035] It should be noted that the double-station multi-point automatic screw machine for electric drill shell production is used, first, start the second electric sliding rail 71, the cooperation of the second electric sliding rail 71 and the second tow chain 72 drives the second electric sliding block 74 to move forward to the working position, synchronously drives the U-shaped frame 75 and the second servo motor 76, the fixed shaft 78 and the turnover plate 77 on it to move forward to the feeding area, clamps the electric drill shell on the first positioning seat 61 and the second positioning seat 62, at this time, start the hydraulic cylinder 64, the output end of the hydraulic cylinder 64 starts to elongate, and then drives the second connecting plate 63 and the lifting rod 653 on it to move downward, because the limiting sliding groove 655 and the limiting pin 657 are connected by sliding, so that the two lifting rods 653 are synchronously driven to rotate in opposite directions while the lifting rods 653 move downward, and then the fixed head 652 and the pressing plate 651 on it move downward, so that the pressing plate 651 rotates and moves downward, the pressing plate 651 is used for clamping and fixing the electric drill shell, after clamping, the second electric sliding rail 71 and the second tow chain 72 move the electric drill shell to below the pre-clamping mechanism 9, at this time, the screw feeding machine starts to feed, and the screw is clamped and fixed in the conical clamping head 963, the buffer rotating mechanism 5 is used to realize the accurate insertion of the bottom of the screwdriver rod 541 and the notch of the top of the screw, after insertion, the output end of the telescopic cylinder 51 continues to elongate, and the screw adsorbed on the bottom of the screwdriver rod 541 is inserted into the threaded hole of the electric drill shell, at this time, the top of the cross installation head 545 and the bottom of the fixed block 546 are in close contact, and then the first servo motor 53 is started, the output end of the first servo motor 53 indirectly drives the screwdriver rod 541 to rotate, and then the screw is installed on the electric drill shell, and automatic assembly of the screw is realized.

[0036] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as limiting the scope of the patent of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of protection of the present application.

Claims

1. A double-station multi-point automatic screw machine for producing an electric drill housing, comprising a base, characterized in that: The top of the base is provided with two double-station switching mechanisms working alternately, a rack is fixedly installed on the rear side of the top of the base, a control module is arranged on the front side of the top of the rack, and two switches are installed on the front side of the top of the base; Also includes: Two fixed plates are fixedly installed on the rear side of the top of the base, a first electric sliding rail is fixedly connected to the top of the two fixed plates, two buffer rotating mechanisms are arranged on the front side of the first electric sliding rail, and a pre-clamping mechanism for clamping and fixing screws is arranged on the lower part of the buffer rotating mechanism; A clamping mechanism for clamping the electric drill shell is fixedly arranged on the top of the double-station switching mechanism, the double-station switching mechanism comprises two second electric sliding rails fixedly installed on the top of the base, two second electric sliding blocks are slidably connected to each second electric sliding rail, and a U-shaped rack is fixedly connected to the top of the two second electric sliding blocks.

2. The double-station multi-point automatic screw machine for producing an electric drill shell according to claim 1, characterized in that: A second servo motor is fixedly installed on the top of the rear side of the U-shaped rack, a fixed shaft is rotatably arranged on the output end of the second servo motor and fixedly installed on the rear side of the U-shaped rack, a turnover plate is fixedly installed on the fixed shaft, a third connecting plate is fixedly installed on the second electric sliding block on the front side, and a second drag chain is fixedly installed on the side of the third connecting plate away from the second electric sliding block.

3. The double-station multi-point automatic screw machine for producing an electric drill housing according to claim 2, characterized in that: The clamping mechanism comprises a first positioning seat and a second positioning seat fixedly installed on the top of the turnover plate, an installation arm is fixedly installed on the side of the bottom of the turnover plate away from the center of the base, a hydraulic cylinder is fixedly installed on the top end of the installation arm, and a lifting rotating assembly is arranged between the output end of the hydraulic cylinder and the turnover plate.

4. The double-station multi-point automatic screw machine for producing an electric drill shell according to claim 3, characterized in that: The lifting rotating assembly comprises two fixed arms fixedly installed on the bottom of the turnover plate, a first fixed ring is fixedly installed on the top of the fixed arm, a limiting guide cylinder is fixedly sleeved in the center of the first fixed ring, a limiting pin is fixedly installed on the inner wall of the limiting guide cylinder, a lifting rod is movably installed in the limiting guide cylinder, a limiting sliding groove is formed in the lifting rod, and the limiting sliding groove is slidably connected with the limiting pin.

5. The double-station multi-point automatic screw machine for producing an electric drill housing according to claim 4, characterized in that: A second connecting plate is rotatably installed on the bottom of the two lifting rods, the top center of the second connecting plate is fixedly connected with the bottom of the output end of the hydraulic cylinder, a fixed head is fixedly installed on the top of the lifting rod, and a pressing plate for pressing and fixing the electric drill shell is fixedly installed on the outside of the fixed head.

6. The double-station multi-point automatic screw machine for producing an electric drill housing according to claim 1, characterized in that: The buffer rotating mechanism comprises a first electric sliding block slidably connected to the first electric sliding rail, a side plate is fixedly installed on the front side of the first electric sliding block, a reinforcing block is fixedly installed on the top of the rear side of the side plate, an extension cylinder is fixedly installed on the top of the front side of the side plate, a connecting head is fixedly installed on the output end of the extension cylinder, a limiting sliding rail is fixedly installed on the middle of the front side of the side plate, a first connecting plate is slidably connected to the limiting sliding rail through a limiting sliding block, the side edge of the first connecting plate is connected with the connecting head, a first servo motor is fixedly installed on the front side of the first connecting plate, a buffer correction assembly is arranged on the output end of the first servo motor, a first drag chain is arranged on the first electric sliding rail, and one end of the first drag chain is fixedly connected with the rear side of the first electric sliding block.

7. The double-station multi-point automatic screw machine for producing an electric drill housing according to claim 6, characterized in that: The buffer correction assembly comprises a connecting rod fixedly installed at the bottom of the output end of the first servo motor, a limiting sleeve fixedly installed at the bottom of the connecting rod, a cross groove formed in the limiting sleeve, a cross mounting head slidingly installed in the cross groove, and a spring fixedly installed at the top of the cross groove.

8. The double-station multi-point automatic screw machine for producing an electric drill housing according to claim 7, characterized in that: A fixed block is fixedly installed at the middle of the cross groove, a screwdriver rod is fixedly installed at the center of the bottom of the cross mounting head, and the screwdriver rod movably penetrates through the center of the bottom of the limiting sleeve.

9. The double-station multi-point automatic screw machine for producing an electric drill housing according to claim 6, characterized in that: The pre-clamping mechanism comprises an installation plate fixedly installed at the bottom of the front side of the side plate, a pre-clamping assembly arranged in the middle of the installation plate, the pre-clamping assembly comprising a connecting pipe fixedly penetrating through the middle of the installation plate, two installation grooves symmetrically formed in the bottom of the connecting pipe, an installation pin fixedly installed in each of the installation grooves, two connecting blocks rotatably installed on each of the installation pins, four connecting blocks arranged in two groups, a conical clamping head for clamping and fixing the screw fixedly installed at the bottom of the two connecting blocks in the same group, and a spring sheet fixedly installed between the connecting block and the inner wall of the installation groove.

10. The double-station multi-point automatic screw machine for producing an electric drill housing according to claim 9, characterized in that: A plug-in pipe is fixedly installed at one side of the connecting pipe, a second fixing ring is fixedly sleeved on the outside of the plug-in pipe, a connecting shaft is fixedly installed on the outside of the second fixing ring, the connecting shaft is fixedly installed at the bottom of the front side of the side plate, a conveying air pipe is plug-in fixedly arranged at the top of the plug-in pipe, and the end of the conveying air pipe away from the plug-in pipe is connected with the discharging end of the screw discharging machine.

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