Automatic spring assembly device

Abstract

The invention relates to an automatic spring assembly device, which is used for mounting a spring on an electronic device. Torsion arms are arranged at both ends of the spring, and the electronic device is provided with a mounting column. The electronic device is provided with slots for embedding the torsion arms on both sides of the mounting column. The automatic assembly device comprises an outer tube, an inner tube and a push rod which are nested in sequence from the outside to the inside. The outer tube is rotatably connected to the inner tube and can slide relatively. The inner tube is rotatably connected to the push rod and can slide relatively. A boss is arranged on the top of the push rod, and the boss diameter is larger than the push rod diameter. A step surface matching the boss is arranged on the top of the inner side of the inner tube. When the boss bottom abuts against the step surface, the push rod bottom extends out of the inner tube, and the push rod diameter matches the inner diameter of the spring. An inner claw is arranged at the bottom of the inner tube, and an outer claw is arranged at the bottom of the outer tube. The device of the invention realizes automatic grasping and installation of the spring by rotating or lifting the inner and outer tubes, and all of which are realized by a motor or a cylinder. Manual operation is not required, and automatic assembly of the spring can be realized.

Description

Technical Field

[0001] The invention relates to an automatic spring assembly device and belongs to the field of automobile electronic device installation. Background Art

[0002] Smaller springs (torsion springs) are often used in the manufacture of automotive electronic parts. The installation of springs is done manually. Due to the small size of the springs, manual installation of springs is very inconvenient, especially when installing torsion springs, two torsion arms need to be twisted at the same time, which makes the operation very difficult and inefficient. Summary of the invention

[0003] In order to solve the problems existing in the prior art, the present invention provides an automatic assembly device capable of grasping and installing a spring.

[0004] In order to achieve the above-mentioned purpose, the technical solution proposed by the present invention is: a spring automatic assembly device for installing a spring on an electronic device, wherein both ends of the spring are provided with a torsion arm, the electronic device is provided with a mounting column, the diameter of the mounting column matches the inner diameter of the spring, and the electronic device is provided with slots for the torsion arm to be embedded on both sides of the mounting column, the automatic assembly device comprises an outer tube, an inner tube and a push rod which are nested in sequence from the outside to the inside, the outer tube is rotatably connected to the inner tube and can slide relatively, and the inner tube is rotatably connected to the push rod and can slide relatively; a boss is provided on the top of the push rod, the diameter of the boss is larger than the diameter of the push rod, a step surface matching the boss is provided on the top of the inner side of the inner tube, when the bottom of the boss is against the step surface, the bottom of the push rod extends out of the inner tube, and the diameter of the push rod matches the inner diameter of the spring; an inner claw is provided at the bottom of the inner tube, and an outer claw is provided at the bottom of the outer tube.

[0005] A further design of the above technical solution is as follows: the automatic assembly device also includes a base, a lifting motor and a lifting seat, the base is provided with a guide rail, the lifting motor is fixed on the base, the output shaft of the lifting motor is a screw, the lifting seat is provided with a threaded hole matching the screw, and is provided with a guide groove matching the guide rail, and the lifting seat can slide up and down along the guide rail driven by the lifting motor.

[0006] The automatic assembly device also includes an inner tube motor and an outer tube motor. The inner tube motor is fixed on the lifting seat, and the output shaft is connected to the top of the inner tube and can drive the inner tube to rotate; the outer tube motor is arranged on the lifting seat, and the output shaft is provided with a first synchronous gear, and the outer side of the outer tube is provided with a second synchronous gear, and a synchronous belt is provided between the first and second synchronous gears. The outer tube motor drives the outer tube to rotate through the synchronous gear and the synchronous belt.

[0007] The automatic assembly device also includes a lifting cylinder and a lifting plate, wherein the lifting cylinder is fixed on a lifting seat, the lifting plate is fixed on an output end of the lifting cylinder, the outer tube motor is fixed on the lifting plate, the outer tube is rotatably connected to the lifting plate, and the lifting cylinder can drive the outer tube and the outer tube motor to move up and down through the lifting plate.

[0008] The lifting plate is provided with a connecting pipe sleeve, and the connecting pipe sleeve is sleeved on the outer pipe and rotatably connected with the outer pipe.

[0009] The inner wall of the connecting pipe sleeve is provided with an annular convex block, and the outer wall of the outer pipe is provided with a groove matched with the convex block. The convex block and the groove are embedded with each other and are rotatably connected with each other.

[0010] The bottom of the inner tube motor output shaft is fixedly connected to the top of the inner tube, and a compression spring is arranged between the top of the push rod and the bottom of the inner tube motor output shaft.

[0011] The automatic assembly device also includes a grasping station, which is provided with a spring groove for vertically inserting a spring, a torsion arm groove for horizontally inserting a torsion arm is provided on one side of the spring groove, and the torsion arm groove is connected with the spring groove, and an inner claw groove for inserting an inner claw is provided on one side of the torsion arm groove, and the inner claw groove is connected with the torsion arm groove.

[0012] The automatic assembly device further comprises an installation station, which is arranged side by side with the grabbing station, and the electronic device is detachably fixed on the installation station.

[0013] The automatic assembly device also includes a translation cylinder, and the base is fixed on the output end of the translation cylinder.

[0014] The beneficial effects of the present invention are:

[0015] The spring automatic assembly device of the present invention uses a push rod to position the spring when grabbing the spring, uses the inner and outer claws to resist the two torsion arms, and rotates relatively to twist the spring, and uses the spring elastic force to clamp the spring on the two claws and the push rod;

[0016] When installing the spring, the inner and outer tubes are first lowered, so that the push rod extends into the inner tube under the action of the installation column on the electronic device, the installation device replaces the push rod to position the spring, and the outer tube is raised. The top of the spring abuts against the bottom end of the inner tube, so that the position of the spring remains unchanged, and the torsion arm in contact with the outer claw rebounds and is embedded in a slot, and then the inner and outer tubes are raised, and the torsion arm abuts against the upper edge of the slot. Under the action of the torsion arm and the slot, the position of the spring remains unchanged, and the other torsion arm is separated from the inner claw, and rebounds under the action of elastic force and is embedded in another slot. The present invention realizes automatic grasping and installation of the spring through the above device.

[0017] The rotation or lifting of the inner and outer tubes in the device of the present invention is achieved by a motor or a cylinder, without manual operation, and can realize automatic assembly of the spring, saving labor costs and improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The structure of the embodiment of the present invention is shown in FIG. Figure 1 ;

[0019] Figure 2 The structure of the embodiment of the present invention is shown in FIG. Figure 2 ;

[0020] Figure 3 It is a front view of an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the positioning tool structure in an embodiment of the present invention;

[0022] Figure 5 for Figure 4 A partial enlarged view of the installation station;

[0023] Figure 6 for Figure 4 Structural diagram of the grabbing station;

[0024] Figure 7 This is a schematic diagram of the structure of the inner and outer tubes and the ejector rod in an embodiment of the present invention;

[0025] Figure 8 for Figure 7 sectional view of .

[0026] In the figure: 1-outer tube, 11-outer claw, 12-outer tube motor, 13-first synchronous gear, 14-second synchronous gear, 15-groove, 2-inner tube, 21-inner claw, 22-inner tube motor, 23-inner tube motor output shaft, 3-elevator, 31-boss, 32-compression spring, 4-base, 41-lifting motor, 42-lifting seat, 43-guide rail, 44-screw, 5-lifting cylinder, 51-lifting plate, 52-connecting sleeve, 6-spring, 61-first torsion arm, 62-second torsion arm, 7 electronic device, 71-mounting column, 72-first slot, 73-second slot, 8-positioning tooling, 81-installation station, 82-grasping station, 83-spring slot, 84-torsion arm slot, 85-inner claw slot, 9-translation cylinder, 91-bottom plate. DETAILED DESCRIPTION

[0027] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. Example

[0028] like Figure 1 , Figure 2 and Figure 3 As shown, the spring automatic assembly device of this embodiment includes an outer tube 1, an inner tube 2 and a push rod 3 which are nested in sequence from the outside to the inside. The outer tube 1 is rotatably connected to the inner tube 2 and can slide relatively. The inner tube 2 is rotatably connected to the push rod 3 and can slide relatively.

[0029] Combination Figure 4 and Figure 5 As shown, the two ends of the spring 6 are respectively provided with a first torsion arm 61 and a second torsion arm 62, the electronic device 7 is provided with a mounting post 71, the diameter of the mounting post 71 matches the inner diameter of the spring 6, and the electronic device is respectively provided with a first slot 72 and a second slot 73 on both sides of the mounting post 71 for the first and second torsion arms to be embedded.

[0030] Combination Figure 3 As shown, the automatic assembly device of this embodiment is further provided with a base 4, a lifting motor 41 and a lifting seat 42 to realize the rotation and up and down movement of the inner and outer tubes. The base 4 is provided with a guide rail 43, the lifting motor 41 is fixed on the base 42, the output shaft of the lifting motor 41 is a screw 44, the lifting seat 42 is provided with a threaded hole matched with the screw 44, and is provided with a guide groove matched with the guide rail 43. The lifting motor rotates, and the lifting seat 42 slides up and down along the guide rail 43 through the cooperation of the screw 44 and the threaded hole.

[0031] The automatic assembly device of this embodiment also includes an inner tube motor 22, an outer tube motor 12, a lifting cylinder 5 and a lifting plate 51. The inner tube motor 22 is fixed on the lifting seat 42, and the output shaft is connected to the top of the inner tube 2 and can drive the inner tube 2 to rotate; the lifting cylinder 5 is fixed on the lifting seat 42, and the lifting plate 51 is fixed to the output end of the lifting cylinder 5, the outer tube motor 12 is fixed on the lifting plate 51, and the lifting plate 51 is provided with a connecting pipe sleeve 52, the connecting pipe sleeve 52 is sleeved on the outer tube 1, and is rotatably connected to the outer tube 1, and the lifting cylinder 5 can drive the outer tube 1 and the outer tube motor 12 to move up and down through the lifting plate 51; the output shaft of the outer tube motor 12 is provided with a first synchronous gear 13, the outer side of the outer tube 1 is provided with a second synchronous gear 14, and a synchronous belt is provided between the first and second synchronous gears, and the outer tube motor 12 drives the outer tube 1 to rotate through the synchronous gear and the synchronous belt. Figure 7 As shown, in this embodiment, an annular protrusion is provided on the inner wall of the connecting pipe sleeve 52, and a groove 15 matching the protrusion is provided on the outer wall of the outer tube 1. The protrusion and the groove are interlocked and rotatably connected to each other, so that the outer tube 1 and the lifting plate 51 can only be rotatably connected, and when the lifting plate 51 moves up and down, it can drive the outer tube 1 to move up and down together.

[0032] Combination Figure 7 and Figure 8As shown, in this embodiment, the bottom of the inner tube motor output shaft 23 is fixedly connected to the top of the inner tube 1, a compression spring 32 is provided between the top of the push rod 3 and the bottom end of the inner tube motor output shaft 23, a boss 31 is provided on the top of the push rod 3, and the diameter of the boss 31 is larger than the diameter of the push rod 3. The top of the inner side of the inner tube 2 is provided with a step surface matching the boss 31, so that a cavity for the boss to slide up and down is formed above the step surface inside the inner tube 2. When the bottom of the boss 31 is against the step surface, the bottom of the push rod 3 extends out of the inner tube 2. When the compression spring 32 contracts, the bottom of the push rod 3 can be retracted into the inner tube 2, and the diameter of the push rod 3 matches the inner diameter of the spring 6; the bottom of the inner tube 2 is provided with an inner claw 21 for moving the second torsion arm 62, and the bottom of the outer tube 1 is provided with an outer claw 11 for moving the first torsion arm 61.

[0033] like Figure 4 As shown, the automatic assembly device of this embodiment is further provided with a positioning tool 8, on which a grabbing station 82 and an installation station 81 are arranged side by side. Figure 6 As shown, the grabbing station 82 is provided with a spring slot 83 for vertically inserting the spring, a torsion arm slot 84 is provided on one side of the spring slot 83 for horizontally inserting the second torsion arm 62, and the torsion arm slot 84 is connected to the spring slot 83, and an inner claw slot 85 is provided on one side of the torsion arm slot 84 for inserting the inner claw 21, and the inner claw slot 85 is connected to the torsion arm slot 84.

[0034] Combination Figure 1 As shown, in order to realize the position switching of the grasping station 82 and the rotating station 81, this embodiment is also provided with a translation cylinder 9 and a base plate 91. The translation cylinder 9 is fixed on the base plate 91, and the base 4 is fixed on the output end of the translation cylinder 9 and can be connected to the base plate 91 by sliding left and right under the drive of the translation cylinder.

[0035] When the automatic assembly device of this embodiment grabs the spring, the spring 6 is placed in the spring groove 83 on the grabbing station 82, the second torsion arm 62 is placed in the torsion arm groove 84, and the inner and outer tubes are driven to descend by the lifting motor 41 until the spring 6 is sleeved on the part of the push rod 3 extending out of the inner tube 2. At this time, the height of the inner claw 21 is lower than the height of the outer claw 11, the inner claw extends into the inner claw groove 85, and the outer claw 11 abuts against one side of the first torsion arm 61. The outer tube motor 12 drives the outer tube 1 to rotate, and the inner and outer tubes rotate relatively, twisting the spring, and respectively pressing against one side of the second torsion arm 62 and the first torsion arm 61; then the lifting motor 41 drives the inner and outer tubes to rise, and the spring 6 is clamped on the inner and outer claws and the push rod 3 by elastic force, and rises with the inner and outer tubes to achieve the grabbing of the spring; then the entire device is driven to translate by the translation cylinder, and moves from above the grabbing station 82 to above the installation station 81.

[0036] Since the spring is stuck on the inner and outer claws by elastic force, the angle between the two torsion arms will be deflected to a certain extent. At this time, the outer tube motor 12 and the inner tube motor 22 can respectively rotate the outer tube 1 and the inner tube 2 to adjust the two torsion arms of the spring 6 to a suitable angle for installation. During installation, the spring 6 is detachably fixed on the installation station 81, and the inner and outer tubes are driven to descend by the lifting cylinder 5. The bottom end of the push rod 3 is opposite to the top of the installation column 71. As the inner and outer tubes descend, the push rod 3 presses on the installation column 71 and continuously compresses the compression spring 32 on the top. The push rod 3 retracts into the inner tube 2. The spring 6 is sleeved on the installation column 71, and the outer tube 1 is driven to rise by the lifting cylinder 5. The outer claw 11 is separated from the first torsion arm 61. The first torsion arm 61 rebounds under the action of the spring and is stuck in the first slot 72. A baffle is provided on the top of the first slot 72. Then the inner and outer tubes are driven to rise by the lifting motor 41. The first torsion arm 61 is restricted by the baffle on the top of the first slot 72 and its position remains unchanged. The second torsion arm 62 is separated from the inner claw 21. The second torsion arm 62 rebounds under the action of the spring and is stuck in the second slot 73. The spring installation is completed.

[0037] The technical solutions of the present invention are not limited to the above-mentioned embodiments, and any technical solutions obtained by equivalent replacement methods fall within the scope of protection required by the present invention.

Claims

1. A spring automatic assembly device, used for mounting a spring on an electronic device, wherein both ends of the spring are provided with a torsion arm, the electronic device is provided with a mounting post, the diameter of the mounting post matches the inner diameter of the spring, and the electronic device is provided with a slot for the torsion arm to be embedded on both sides of the mounting post, characterized in that: The automatic assembly device comprises an outer tube, an inner tube and a push rod which are nested in sequence from the outside to the inside, the outer tube is rotatably connected to the inner tube and can slide relatively, the inner tube is rotatably connected to the push rod and can slide relatively; a boss is provided on the top of the push rod, the boss diameter is larger than the push rod diameter, a step surface matching the boss is provided on the top of the inner side of the inner tube, when the boss bottom abuts against the step surface, the push rod bottom extends out of the inner tube, and the push rod diameter matches the inner diameter of the spring; an inner claw is provided on the bottom of the inner tube, and an outer claw is provided on the bottom of the outer tube; The automatic assembly device also includes a base, a lifting motor and a lifting seat. The base is provided with a guide rail. The lifting motor is fixed on the base. The output shaft of the lifting motor is a screw. The lifting seat is provided with a threaded hole that matches the screw and a guide groove that matches the guide rail. The lifting seat can slide up and down along the guide rail driven by the lifting motor. The automatic assembly device further comprises an inner tube motor and an outer tube motor, wherein the inner tube motor is fixed on the lifting seat, and the output shaft is connected to the top of the inner tube and can drive the inner tube to rotate; the outer tube motor is arranged on the lifting seat, and a first synchronous gear is arranged on the output shaft, a second synchronous gear is arranged on the outer side of the outer tube, a synchronous belt is arranged between the first and second synchronous gears, and the outer tube motor drives the outer tube to rotate through the synchronous gear and the synchronous belt; The automatic assembly device also includes a lifting cylinder and a lifting plate, wherein the lifting cylinder is fixed on a lifting seat, the lifting plate is fixed on an output end of the lifting cylinder, the outer tube motor is fixed on the lifting plate, the outer tube is rotatably connected to the lifting plate, and the lifting cylinder can drive the outer tube and the outer tube motor to move up and down through the lifting plate.

2. The spring automatic assembly device according to claim 1, characterized in that: The lifting plate is provided with a connecting pipe sleeve, and the connecting pipe sleeve is sleeved on the outer pipe and rotatably connected with the outer pipe.

3. The spring automatic assembly device according to claim 2, characterized in that: The inner wall of the connecting pipe sleeve is provided with an annular convex block, and the outer wall of the outer pipe is provided with a groove matched with the convex block. The convex block and the groove are embedded with each other and are rotatably connected with each other.

4. The spring automatic assembly device according to claim 1 or 3, characterized in that: The bottom of the inner tube motor output shaft is fixedly connected to the top of the inner tube, and a compression spring is arranged between the top of the push rod and the bottom of the inner tube motor output shaft.

5. The spring automatic assembly device according to claim 1 or 3, characterized in that: The automatic assembly device also includes a grasping station, which is provided with a spring groove for vertically inserting a spring, a torsion arm groove for horizontally inserting a torsion arm is provided on one side of the spring groove, and the torsion arm groove is connected with the spring groove, and an inner claw groove for inserting an inner claw is provided on one side of the torsion arm groove, and the inner claw groove is connected with the torsion arm groove.

6. The spring automatic assembly device according to claim 5, characterized in that: The automatic assembly device further comprises an installation station, which is arranged side by side with the grabbing station, and the electronic device is detachably fixed on the installation station.

7. The spring automatic assembly device according to claim 6, characterized in that: The automatic assembly device also includes a translation cylinder, and the base is fixed on the output end of the translation cylinder.

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