Automatic assembly machine for U-shaped wire clamp hardware

Abstract

The application relates to the technical field of power fitting production equipment, and particularly discloses an automatic assembly machine for U-shaped wire clamp fittings, which comprises a base, a rotating disc and a plurality of positioning jigs, the positioning jigs are arranged in an annular array on the upper surface of the rotating disc, the rotating disc is rotationally arranged above the base, a threading guide upper feeding mechanism and a nut screwing mechanism are sequentially arranged at the periphery of the rotating disc, the nut screwing mechanism comprises two guide cylinders arranged side by side, a prismatic inner cavity is formed in the guide cylinder, a nut discharging track is arranged on the guide cylinder, a rotating sleeve is rotationally connected to the end surface of each guide cylinder facing the rotating disc, and a prismatic through groove is formed in the rotating sleeve and communicates with the prismatic inner cavity. The automatic assembly machine for U-shaped wire clamp fittings disclosed by the application not only improves the pre-assembly efficiency of the U-shaped wire clamp fittings, but also effectively reduces the labor intensity of the workers, the personnel cost of the enterprise and improves the pre-assembly effect of the U-shaped wire clamp fittings.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of power fitting production equipment, and particularly discloses an automatic assembly machine for U-shaped clamp fittings. BACKGROUND

[0002] The U-shaped clamp is a common power fitting, which is mainly used on overhead lines to suspend, fix, protect and connect cables. Figure 1 The U-shaped clamp shown in the figure is one of the most widely used types on the market, which mainly comprises a U-shaped screw rod, a threading guide and an adjusting nut.

[0003] In the process of selling the U-shaped clamp, the U-shaped clamp is sold in a scattered manner or in a pre-assembled manner. The U-shaped clamp is sold in a scattered manner, that is, the U-shaped clamp is sold in a bag according to the number of accessories. The U-shaped clamp is sold in a pre-assembled manner, that is, the U-shaped screw rod, the threading guide and the adjusting nut are pre-assembled and sold according to requirements. At present, the pre-assembly process of the U-shaped clamp is manually assembled by personnel. The personnel thread the threading guide through the two ends of the U-shaped screw rod, and then screw the adjusting nut on the two ends of the U-shaped screw rod for fixation. Although the pre-assembly process of the U-shaped clamp is simple and has no technical difficulty, the manual pre-assembly has low efficiency, and multiple employees need to be arranged to assemble to meet the production capacity demand. In addition, in the manual pre-assembly process, the threading process of the adjusting nut cannot be effectively controlled. When the adjusting nut is screwed in shallowly, the adjusting nut is easy to slip off from the end of the U-shaped screw rod in the subsequent transportation process, resulting in the lack of accessories of the pre-assembled and sold U-shaped clamp fitting. Therefore, in view of the low efficiency, the limitation of enterprise production capacity and the inability to guarantee the pre-assembly effect of the U-shaped clamp fitting in the manual pre-assembly process of the existing U-shaped clamp, the application provides an equipment capable of automatically assembling the U-shaped clamp fitting to improve the assembly efficiency of the U-shaped clamp fitting of the enterprise and reduce the personnel cost. SUMMARY

[0004] The application aims to design an equipment capable of automatically pre-assembling the U-shaped clamp fitting to solve the problems of low efficiency and high labor cost in the manual pre-assembly process of the existing U-shaped clamp fitting.

[0005] The application is realized by the following technical scheme:

[0006] An automatic assembly machine for U-shaped clamp fittings comprises a base, a turntable and a plurality of positioning jigs. The positioning jigs are arranged in a ring array on the upper surface of the turntable. The turntable is rotationally arranged above the base. A threading guide feeding mechanism and a nut screwing mechanism are sequentially arranged at the periphery of the turntable.

[0007] The threading guide loading mechanism comprises a conveying seat, a row of material slot for neatly arranging a plurality of threading guides is formed on the conveying seat, and a pushing device for pushing the threading guides out of the row of material slot one by one is arranged in the conveying seat.

[0008] The nut winding mechanism comprises two guide cylinders arranged side by side, a prismatic inner cavity is formed in the guide cylinder, a nut discharging track is arranged in the guide cylinder and communicates with the prismatic inner cavity, a rotating sleeve is rotatably connected to the end surface of the guide cylinder facing the rotating disc, a prismatic through slot is formed in the rotating sleeve and communicates with the prismatic inner cavity in alignment, a driving device is connected to the two rotating sleeves, a pushing block for pushing the nut into the prismatic through slot is arranged in the prismatic inner cavity, and a telescopic driving assembly is connected to the pushing block outside the guide cylinder.

[0009] As a further arrangement of the above-mentioned scheme, the positioning jig comprises a positioning block, a positioning groove is formed on the upper surface of the positioning block, a guide sliding block is connected to the lower surface of the positioning block, a radial strip-shaped opening for passing through the guide sliding block is formed on the rotating disc, a roller is arranged on the inner side of the lower end of the guide sliding block, a spring is arranged on the outer side of the guide sliding block and connected to the outer circular end of the rotating disc, an annular guide block abutting against the roller is formed on the upper surface of the base, and a protruding portion is arranged at the position of the annular guide block in alignment with the nut winding mechanism.

[0010] As a further arrangement of the above-mentioned scheme, the lower surface of the rotating disc is connected with a vertical shaft passing through the annular guide block and extending into the cabinet, and a driving unit for driving the vertical shaft to rotate at a fixed angle is arranged in the cabinet.

[0011] As a further arrangement of the above-mentioned scheme, the side surface of the base is provided with a first support, and the conveying seat is arranged at the upper end of the first support.

[0012] As a specific arrangement of the above-mentioned scheme, the pushing device comprises a pushing screw rod arranged in a moving groove at the lower end of the conveying seat, one end of the pushing screw rod is connected with a screw rod motor, a moving block threadedly connected with the pushing screw rod is arranged in the moving groove, and a pushing plate extending into the row of material slot is connected to the moving block.

[0013] As a further arrangement of the above-mentioned scheme, the side surface of the base is provided with a second support, the guide cylinder is arranged at the upper end of the second support, a bearing is arranged on the end surface of the guide cylinder facing the rotating disc, the rotating sleeve is rotatably connected in the bearing, and the driving device comprises a driving motor, a belt transmission assembly is arranged between the motor shaft of the driving motor and the two rotating sleeves.

[0014] As a specific arrangement of the above-mentioned scheme, the telescopic driving assembly comprises a pneumatic cylinder, a pushing bar is connected to the piston rod end of the pneumatic cylinder, and two pushing rods respectively extending into the corresponding guide cylinder and connected with the pushing block are connected to the pushing bar.

[0015] As a specific arrangement of the above scheme, the nut screwing mechanism is provided in multiple groups, and the threading guide feeding mechanism and the multiple groups of nut screwing mechanisms are sequentially arranged at the periphery of the turntable. Advantages

[0016] The automatic assembly machine for U-shaped clamp fittings disclosed in the present application only needs to arrange one employee to feed and discharge the U-shaped screw rod during operation to realize full-automatic assembly of the U-shaped clamp fittings. The automatic assembly machine not only improves the pre-assembly efficiency of the U-shaped clamp fittings, but also effectively reduces the labor intensity of the employees and the personnel cost of the enterprise, so that the pre-assembly capacity of the U-shaped clamp fittings is greatly improved.

[0017] The automatic assembly machine disclosed in the present application switches the positions of the positioning jigs by rotation of the turntable, so that the U-shaped screw rods at different positions can be simultaneously assembled with the threading guides and adjusting nuts. Meanwhile, during the nut screwing process, the structure of the positioning jig and the annular guide block is designed such that when the rotation is switched to the nut screwing mechanism, the end of the U-shaped screw rod in the positioning jig automatically extends into the nut screwing mechanism, and then the two nuts are simultaneously screwed onto the two ends of the U-shaped screw rod by the action of the belt transmission assembly and the driving motor, and the screwing process of the two nuts is always kept the same, thereby improving the pre-assembly effect of the U-shaped clamp fittings. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0019] Figure 1 Fig. 1 is a perspective view of the three-dimensional structure of the U-shaped clamp fitting;

[0020] Figure 2 Fig. 2 is a perspective view of the three-dimensional structure of the present application;

[0021] Figure 3 Fig. 3 is a top plan view of the structure of the present application;

[0022] Figure 4 Fig. 4 is a perspective view of the three-dimensional structure of the base, annular guide block, turntable, etc. in the present application;

[0023] Figure 5 Fig. 5 is a perspective view of the three-dimensional structure of the turntable, vertical shaft, guide block, etc. in the present application;

[0024] Figure 6 Fig. 6 is a perspective view of the three-dimensional structure of the positioning jig in the present application;

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the threading guide loading mechanism in the application;

[0026] Figure 8 It is a schematic diagram of the internal planar structure of the threading guide loading mechanism in the application;

[0027] Figure 9 It is a schematic diagram of the three-dimensional structure of the nut screwing mechanism in the application;

[0028] Figure 10 It is a schematic diagram of the assembly structure of the nut screwing mechanism in the application. Embodiment

[0029] In order for those skilled in the art to better understand the scheme of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should be within the scope of protection of the present application.

[0030] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings. Figures 2-10 The present application will be described in detail below with reference to the accompanying drawings. Embodiment

[0031] Embodiment 1 discloses an automatic assembly machine for U-shaped wire clamp fittings, referring to the accompanying drawings Figure 2 and the accompanying drawings Figure 3 The main body of the automatic assembly machine includes a base 1, a control box 2, a turntable 3, a plurality of positioning jigs 4, a threading guide loading mechanism 5, and two groups of nut screwing mechanisms 6. The number of specific nut screwing mechanisms 6 is not limited to two groups, and is determined by the number of nuts required to be screwed on the U-shaped wire clamp fitting. The plurality of positioning jigs 4 are arranged in a ring array on the upper surface of the turntable 3, and then the turntable 3 is rotatably installed above the base 1. A driving unit (not shown in the figure) for driving the turntable 3 to rotate at a set angle is arranged inside the base 1. The specific driving unit can be selected by a step motor plus gear meshing transmission mode. By controlling the pulse signal of the step motor, the function of accurately controlling the angle rotation of the turntable 3 can be achieved. The two groups of nut screwing mechanisms 6 and the threading guide loading mechanism 5 are respectively arranged at different workstations on the periphery of the turntable 3, so that the U-shaped screw rod can be sleeved with the threading guide during the conveying process, and then the two groups of nuts are automatically screwed.

[0032] Referring to the accompanying drawings Figure 4The annular guide block 7 is fixed on the center of the upper surface of the base 1, and the protruding parts 701 are outwardly protruded on the annular guide block 7 at positions corresponding to the two sets of nut screwing mechanisms 6. The vertical shaft 8 is arranged through the annular guide block and extends into the control box 2 at the center of the lower surface of the rotating disc 3, and the lower end of the vertical shaft 8 is connected with the driving unit, so as to realize the rotation of the rotating disc 3.

[0033] Referring to the accompanying drawings Figure 5 and the accompanying drawings Figure 6 The positioning jig 4 comprises a positioning block 401 arranged on the upper surface of the rotating disc 3, and the positioning groove 402 adapted to the U-shaped screw rod is arranged on the upper surface of the positioning block 401. The guide sliding block 403 is connected to the lower surface of the positioning block 401, and the radial strip-shaped port 301 matched with the guide sliding block 403 is arranged on the upper surface of the rotating disc 3. The roller 404 abutting against the annular guide block 7 is arranged on the inner side of the lower end of the guide sliding block 403, and the spring 405 is connected to the outer side of the lower end of the guide sliding block 403, and the outer end of the spring 405 is connected with the outer circular end of the rotating disc 3. During the rotation of the rotating disc 3, when the positioning jig 4 moves to be aligned with the nut screwing mechanism 6, the positioning jig 4 is radially pushed outwardly a distance due to the abutting action between the protruding part 701 on the annular guide block 7 and the roller 404.

[0034] Referring to the accompanying drawings Figure 7 and the accompanying drawings Figure 8 The threading guide loading mechanism 5 comprises the first support 501 fixedly connected with the side wall of the base 1, and the conveying seat 502 is fixedly installed on the upper end of the first support 501. The discharging groove 503 matched with the cross section of the threading guide is arranged in the conveying seat 502, and the loading port 504 is arranged on the outer end of the discharging groove 503. The moving groove is arranged in the conveying seat 502 below the discharging groove 503, the pushing screw rod 505 is rotatably arranged in the moving groove, the screw rod motor 506 is arranged on the outer end surface of the discharging groove 503 and connected with the pushing screw rod 505. The moving block 507 threadedly connected with the pushing screw rod 505 is arranged in the moving groove, and the pushing plate 508 extending into the discharging groove 503 is connected to the upper end of the moving block 507. Before the operation of the above-mentioned threading guide loading mechanism 5, the plurality of threading guides are arranged in the discharging groove 503 in order, and then when the U-shaped screw rod is rotated to be aligned with the threading guide loading mechanism 5, the screw rod motor 506 is started to move the moving block 507 and the pushing plate 508 a set distance towards the U-shaped screw rod, and then the threading guide at the outermost end of the discharging groove 503 is pushed to the U-shaped screw rod by the pushing plate 508.

[0035] Referring to the accompanying drawings Figure 9 and the accompanying drawings Figure 10The nut screwing mechanism 6 comprises a second support 601 fixedly connected with the side wall of the base 1, two parallelly arranged material guiding cylinders 602 are arranged on the upper surface of the second support 601, and a nut discharging track 603 is arranged on the upper surface of each material guiding cylinder 602, the end of the nut discharging track 603 is connected with a vibrating feeding disc (not shown in the figure), the vibrating feeding disc can send the nuts into the nut discharging track 603, and then the nuts in the nut discharging track 603 are sequentially arranged into the prismatic inner cavity in the material guiding cylinder 602. A bearing 604 is arranged on the end surface of each material guiding cylinder 602 facing the positioning jig 4, a rotating sleeve 605 is rotatably connected in the bearing 604, and a prismatic through slot is formed in the rotating sleeve 605 and is in alignment with the prismatic inner cavity of the material guiding cylinder 602.

[0036] A driving motor 606 is fixedly installed on the upper ends of the two material guiding cylinders 602, and a driving pulley 607 is arranged on the motor shaft of the driving motor 606. Meanwhile, a driven pulley 608 is arranged on the outer circumferential surface of each rotating sleeve 605 extending out of the bearing 604, and a transmission belt 609 is arranged between the driving pulley 607 and the two driven pulleys 608. The synchronous rotation of the two rotating sleeves 605 in the bearing 604 can be realized through the power input of the driving motor 606 and the action of the transmission belt 609. Finally, an air cylinder 610 is also installed on the outer end of the upper surface of the second support 601, which can also be replaced by other telescopic driving members such as an electric push rod and a hydraulic cylinder. A pushing rod 611 is connected to the end of the air cylinder 610, and two push rods 612 are connected to the pushing rod 611, the ends of the two push rods 612 are arranged in the prismatic inner cavity of the corresponding material guiding cylinder 602, and a pushing block 613 is connected to the inner end of the push rod 612.

[0037] The working process and principle of the automatic assembly machine for the U-shaped clamp fitting are as follows:

[0038] Firstly, the operation program of the corresponding electrical devices is set through the control box 2, then a plurality of threading guides are arranged in the discharging groove 503, and the nuts are sent into the material guiding cylinder 602 through the vibrating feeding disc. Then the driving unit is started to make the rotating disc 3 rotate by a certain angle on the base 1 each time, and an employee can be arranged to put the U-shaped screw rod into the positioning slot 402 one by one during the rotation of the rotating disc 3.

[0039] When the positioning jig 4 provided with the U-shaped screw rod is rotated to be aligned with the threading guide feeding mechanism 5, the lead screw motor 506 is started to make the pushing lead screw 505 rotate by a certain number of turns, and then the pushing plate 508 moves towards the positioning jig 4 under the action of the pushing lead screw 505 and the moving block 507, so that the outermost threading guide in the discharging groove 503 is pushed onto the U-shaped screw rod through the action of the pushing plate 508.

[0040] Then, the U-shaped screw rod with the threading guide is rotated to be aligned with the first nut winding mechanism 6 with the positioning jig 4, and due to the setting of the protrusions on the annular guide block 7, when the positioning jig 4 is rotated to the position of the nut winding mechanism 6, the whole positioning jig 4 is moved radially outward by the extrusion of the roller 404 and the protrusions 701 on the annular guide block 7, then the two ends of the U-shaped screw rod are respectively inserted into the corresponding rotating sleeves 605, at this time the air cylinder 610 is started and the push rod 612 and the push block 613 push the nuts in the guide cylinder 602 to be in contact with the ends of the U-shaped screw rod, then the driving motor 606 is controlled to rotate by a set number of turns, and the two rotating sleeves 605 are synchronously rotated by the action of the transmission belt 609, in the process of rotating the rotating sleeves 605, the nuts inside are rotated, and then the nuts are threadedly connected to the U-shaped screw rod.

[0041] After the first group of nuts are wound, the positioning jig 4 with the U-shaped screw rod is rotated to be aligned with the second nut winding mechanism 6, and then the above steps are repeated to rotate the second group of nuts into the ends of the U-shaped screw rod.

[0042] The above is only a preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An automatic assembly machine for U-shaped wire clamp fittings, characterized in that, It includes a base, a rotating disc and a plurality of positioning fixtures, the positioning fixtures are arranged in an annular array on the upper surface of the rotating disc, the rotating disc is rotationally arranged above the base, a threading guide feeding mechanism and a nut screwing mechanism are sequentially arranged at the periphery of the rotating disc; The threading guide feeding mechanism comprises a conveying seat, the conveying seat is provided with a row material groove for neatly arranging a plurality of threading guides, and a pushing device is arranged in the conveying seat to push the threading guides out of the row material groove one by one; The nut screwing mechanism comprises two guide cylinders arranged side by side, the interior of the guide cylinder is provided with a prismatic inner cavity, and the guide cylinder is provided with a nut discharging track in communication with the prismatic inner cavity, each end surface of the guide cylinder towards the rotating disc is rotationally connected with a rotating sleeve, the rotating sleeve is provided with a prismatic through slot in communication with the prismatic inner cavity, the two rotating sleeves are jointly connected with a driving device, the prismatic inner cavity is provided with a pushing block for pushing the nut into the prismatic through slot, and the pushing block is connected with a telescopic driving assembly outside the guide cylinder; The positioning fixture comprises a positioning block, the upper surface of the positioning block is provided with a positioning groove, and the lower surface is connected with a guide sliding block, the rotating disc is provided with a radial strip-shaped opening for passing through the guide sliding block, the inner side of the lower end of the guide sliding block is provided with a roller, and the outer side is provided with a spring connected with the outer circular end of the rotating disc, the upper surface of the base is provided with an annular guide block abutting with the roller, and the annular guide block is provided with a protruding portion at a position aligned with the nut screwing mechanism; The side surface of the base is provided with a second support, the guide cylinder is arranged at the upper end of the second support, the end surface of the guide cylinder towards the rotating disc is provided with a bearing, the rotating sleeve is rotationally connected in the bearing, and the driving device comprises a driving motor, and a belt transmission assembly is arranged between the motor shaft of the driving motor and the two rotating sleeves.

2. The automatic assembling machine for U-shaped wire holder hardware according to claim 1, wherein The lower surface of the rotating disc is connected with a vertical shaft passing through the annular guide block and extending into the cabinet, and the cabinet is provided with a driving unit for driving the vertical shaft to rotate at a fixed angle.

3. The automatic assembling machine for U-shaped wire holder hardware according to claim 1, wherein The side surface of the base is provided with a first support, and the conveying seat is arranged at the upper end of the first support.

4. The automatic assembling machine for U-shaped wire holder hardware according to claim 3, wherein The pushing device comprises a pushing lead screw arranged in a moving groove at the lower end of the conveying seat, one end of the pushing lead screw is connected with a lead screw motor, a moving block is arranged in the moving groove and threadedly connected with the pushing lead screw, and the moving block is connected with a pushing plate extending into the row material groove.

5. The automatic assembling machine for U-shaped wire holder hardware according to claim 1, wherein The telescopic driving assembly comprises a pneumatic cylinder, the piston rod end of the pneumatic cylinder is connected with a pushing bar, and the pushing bar is connected with two pushing rods extending into the corresponding guide cylinders and connected with the pushing block.

6. The automatic assembly machine for U-shaped wire holder hardware according to claim 1, wherein The nut screwing mechanism is provided with a plurality of groups, and the threading guide feeding mechanism and the plurality of groups of nut screwing mechanisms are sequentially arranged at the periphery of the rotating disc.

Images