Automatic screw locking machine for terminal strip

Abstract

The utility model discloses an automatic screw locking machine for a terminal strip, which aims to position the terminal strip by arranging a positioning ejector pin and prevent the terminal strip from deviating, and adopts the technical scheme that the automatic screw locking machine for the terminal strip comprises a rack, a rotating disc is arranged on the rack, a plurality of material placing seats are arranged on the rotating disc, and the material placing seats are arranged on the rotating disc. An automatic screw locking device and a discharging mechanical arm are arranged on the machine frame around the rotating disc, and the rotating disc drives the material containing base to rotate so that the material containing base can be in butt joint with the automatic screw locking device and the discharging mechanical arm. A concave part for placing and positioning a sheet metal part is arranged at the top of the material placing seat, a clearance hole corresponding to a threaded hole of the sheet metal part is formed in the concave part, a positioning ejector pin is arranged in the clearance hole, and the positioning ejector pin can elastically ascend and descend; when screw locking is not carried out, the top end of the positioning ejector pin is higher than the sheet metal part; belongs to the technical field of screw locking.

Description

Technical Field

[0001] The utility model belongs to the technical field of screw locking, and more specifically relates to an automatic screw locking machine for a terminal block. Background Art

[0002] At present, terminal blocks are generally fixed on sheet metal parts in two ways, one is to clamp them with guide rails, and the other is to lock them with screws. Compared with clamping with guide rails, screw locking is easier to realize automated processing. Therefore, most terminal blocks are fixed on sheet metal parts by screw locking to facilitate automated processing.

[0003] The screw locking of the terminal block is generally achieved through an automatic screw locking machine. The sheet metal is placed at the specified position, and the terminal block is placed on the sheet metal. Then the automatic screw locking machine performs screw locking to fix the terminal block on the sheet metal. However, in practice, it is found that there is no structure for positioning the terminal block on the sheet metal, and the terminal block is generally provided with a long waist hole or a C-shaped slot for screws to pass through for locking. At the beginning, the terminal block can be prepared to be placed at the specified position on the sheet metal, so that the C-shaped slot corresponds to the threaded hole. However, as the sheet metal moves, the terminal block may be offset, resulting in the C-shaped slot and the threaded hole not corresponding, and the screw locking cannot be performed. Utility Model Content

[0004] The main purpose of the utility model is to provide an automatic screw locking machine for a terminal block, which aims to arrange a positioning ejector pin to position the terminal block and prevent the terminal block from deviating.

[0005] According to a first aspect of the utility model, there is provided an automatic screw locking machine for terminal blocks, comprising a frame, a turntable is provided on the frame, a plurality of material placement seats are provided on the turntable, an automatic screw locking device and a material unloading manipulator are provided on the frame around the turntable, the turntable drives the material placement seats to rotate so that the material placement seats can dock with the automatic screw locking device and the material unloading manipulator;

[0006] The top of the material placement seat is provided with a recessed portion for placing and positioning the sheet metal part, the recessed portion is provided with a clearance hole corresponding to the threaded hole of the sheet metal part, a positioning ejector is provided in the clearance hole, and the positioning ejector can be elastically lifted and lowered; when the screw is not locked, the top of the positioning ejector is higher than the sheet metal part;

[0007] The automatic screw locking device locks the screws onto the sheet metal part located on the material placement seat, and the unloading robot completes the removal of the sheet metal part locked with the screws.

[0008] In the above-mentioned terminal block automatic screw locking machine, the positioning ejector includes an anti-slip section and a positioning section that are connected in sequence from bottom to top, and the outer diameter of the anti-slip section is larger than the outer diameter of the positioning section;

[0009] The air avoidance hole penetrates from top to bottom, and includes an installation section, a limiting section and an air avoidance section which are connected in sequence from bottom to top. The inner diameter of the installation section is larger than the outer diameter of the anti-slip section, the inner diameter of the limiting section is matched with the outer diameter of the positioning section, the inner diameter of the air avoidance section is larger than the outer diameter of the positioning section, and a spring is provided in the installation section, and the spring is located below the anti-slip section.

[0010] In the above-mentioned terminal block automatic screw locking machine, the turntable is provided with a bottom plate corresponding to the material placement seat one by one, the material placement seat is fixed on the bottom plate, and the bottom plate is provided with a through hole docking with the mounting section.

[0011] In the above-mentioned terminal block automatic screw locking machine, the recessed portion is provided with a receiving groove corresponding to the ground wire hole of the sheet metal part, the bottom of the receiving groove is provided with a positioning groove adapted to the nut, and a positioning ejector pin is provided in the positioning groove, and the positioning ejector pin can be elastically lifted and lowered; when the screw is not locked, the top end of the positioning ejector pin is higher than the sheet metal part;

[0012] The frame is provided with a nut supply device for placing nuts into the positioning grooves.

[0013] In the above-mentioned terminal block automatic screw locking machine, an elastic washer supply device is provided on the frame, and the elastic washer supply device is used to place the elastic washer above the nut in the positioning groove.

[0014] In the above-mentioned terminal block automatic screw locking machine, an elastic gasket supply device is provided on the frame, and the elastic gasket supply device is used to place the elastic gasket above the elastic gasket in the positioning groove.

[0015] In the above-mentioned terminal block automatic screw locking machine, a plurality of support rollers are provided on the frame, the support rollers are located below the turntable, and the plurality of support rollers are evenly distributed circumferentially around the axis of the turntable to support the rotation of the turntable.

[0016] One of the above technical solutions of the utility model has at least one of the following advantages or beneficial effects:

[0017] In the utility model, the structure of the material placement seat is optimized, and an air avoidance hole is provided on the material placement seat, and the air avoidance hole corresponds to the threaded hole of the sheet metal part. When locking the screw, the air avoidance hole can avoid interference between the screw and the material placement seat, and a positioning ejector pin that can be elastically lifted and lowered is provided in the air avoidance hole. Before the screw is locked, the top of the positioning ejector pin is higher than the sheet metal part. Therefore, when the sheet metal part is placed on the material placement seat, the positioning ejector pin will pass through the threaded hole and be exposed. At this time, the terminal row is placed on the sheet metal part, and the positioning ejector pin is matched with the C-shaped groove of the terminal row, so as to locate the position of the terminal row on the sheet metal part. Even if the material placement seat moves, the terminal row will not be offset, ensuring that the subsequent screw locking steps can be carried out normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0019] Figure 1 It is a structural schematic diagram of the first embodiment of the utility model;

[0020] Figure 2 This is a schematic structural diagram of a material placement seat according to the first embodiment of the utility model;

[0021] Figure 3 It is a top view of the material placement seat of the first embodiment of the utility model;

[0022] Figure 4 The first embodiment of the utility model Figure 3 AA section view.

[0023] Among them, the reference numerals of each figure are:

[0024] 1. Frame; 2. Turntable; 21. Bottom plate; 211. Through hole; 3. Material placement seat; 31. Recessed portion; 32. Avoiding hole; 321. Mounting section; 322. Limiting section; 323. Avoiding section; 33. Positioning ejector pin; 331. Anti-slip section; 332. Positioning section; 333. Spring; 34. Receiving groove; 35. Positioning groove; 4. Automatic screw locking device; 5. Unloading manipulator; 6. Nut supply device; 7. Elastic washer supply device; 8. Elastic gasket supply device. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] The following disclosure provides many different embodiments or examples for implementing different solutions of the present invention.

[0027] Reference Figures 1 to 4 As shown, in one embodiment of the utility model, an automatic screw locking machine for terminal blocks includes a frame 1, a turntable 2 is provided on the frame 1, a plurality of material placement seats 3 are provided on the turntable 2, an automatic screw locking device 4 and a material unloading manipulator 5 are provided on the frame 1 around the turntable 2, and the turntable 2 drives the material placement seats 3 to rotate so that the material placement seats 3 can dock with the automatic screw locking device 4 and the material unloading manipulator 5;

[0028] The top of the material placement seat 3 is provided with a recessed portion 31 for placing and positioning the sheet metal part. The recessed portion 31 is provided with a clearance hole 32 corresponding to the threaded hole of the sheet metal part. A positioning ejector pin 33 is provided in the clearance hole 32. The positioning ejector pin 33 can be elastically raised and lowered. When the screws are not locked, the top of the positioning ejector pin 33 is higher than the sheet metal part.

[0029] When in use, manual loading is required. The material placement seat 3 is first aligned with the loading station under the drive of the turntable 2. The worker places the sheet metal into the recessed portion 31 first. At this time, the screws have not been locked, and the positioning ejector pin 33 is not under pressure. Therefore, the positioning ejector pin 33 will pass through the threaded hole and be exposed. The worker then places the terminal row on the sheet metal, allowing the positioning ejector pin 33 to cooperate with the C-shaped groove of the terminal row, thereby positioning the terminal row on the sheet metal. Even if the material placement seat 3 moves, the terminal row will not be offset; then, the turntable 2 will The material placement seat 3 is driven to connect with the automatic screw locking device 4. The automatic screw locking device 4 can independently supply screws and screw the screws into the threaded holes of the sheet metal parts. During this process, the screws will press on the positioning ejector pin 33. Since the positioning ejector pin 33 can be elastically raised and lowered, the positioning ejector pin 33 will move downward, and the screw can enter the air avoidance hole 32 to avoid interference between the screw and the material placement seat 3. After the screw is locked, the turntable 2 drives the material placement seat 3 to connect with the unloading robot 5, and the unloading robot 5 takes away the sheet metal parts with the locked terminal row.

[0030] In this embodiment, the positioning ejector 33 includes an anti-slip section 331 and a positioning section 332 that are connected in sequence from bottom to top, and the outer diameter of the anti-slip section 331 is larger than the outer diameter of the positioning section 332;

[0031] The air avoidance hole 32 runs through from top to bottom, and includes a mounting section 321, a limiting section 322 and an air avoidance section 323 which are connected in sequence from bottom to top. The inner diameter of the mounting section 321 is larger than the outer diameter of the anti-slip section 331, the inner diameter of the limiting section 322 matches the outer diameter of the positioning section 332, the inner diameter of the air avoidance section 323 is larger than the outer diameter of the positioning section 332, and a spring 333 is provided in the mounting section 321, and the spring 333 is located below the anti-slip section 331;

[0032] When the screw is not locked, the positioning ejector 33 is not compressed, and the spring 333 is expanded, allowing the anti-slip section 331 to press against the top of the installation section 321. At this time, the positioning section 332 is inserted into the avoidance section 323; when the screw is locked, the screw will press onto the positioning section 332, pressing the positioning section 332 to move downward, so that the anti-slip section 331 presses the spring 333 to move downward, the spring 333 is compressed, and the screw can enter the avoidance section 323; thereafter, the sheet metal is removed, the screw leaves the avoidance section 323, the positioning section 332 is not compressed, and the spring 333 is reset, allowing the positioning section 332 to pass through the avoidance section 323 again.

[0033] In this embodiment, a bottom plate 21 corresponding to the material placement seat 3 is provided on the turntable 2, and the material placement seat 3 is fixed on the bottom plate 21. A through hole 211 is provided on the bottom plate 21 to connect with the mounting section 321, and the through hole 211 can locate the position of the spring 333; the bottom of the material placement seat 3 is connected through the bottom plate 21, which facilitates the installation of the spring 333 and the positioning ejector pin 33.

[0034] In actual production, a ground wire screw needs to be fixed on the sheet metal. The screw is not directly threaded on the sheet metal, but is fastened by a nut to facilitate the subsequent connection of the ground wire. Therefore, it is necessary to arrange the nut under the sheet metal in advance to ensure that the automatic screw locking device 4 can screw the screw onto the nut when locking the screw.

[0035] In this embodiment, the recessed portion 31 is provided with a receiving groove 34 corresponding to the ground wire hole of the sheet metal part, and the bottom of the receiving groove 34 is provided with a positioning groove 35 adapted to the nut, so that the inserted nut cannot rotate, and a positioning ejector pin 33 is provided in the positioning groove 35, and the positioning ejector pin 33 can be elastically lifted and lowered; when the screw is not locked, the top of the positioning ejector pin 33 is higher than the sheet metal part;

[0036] The positioning ejector pin 33 is used to locate the ground wire hole position of the sheet metal part. A corresponding air-avoiding hole 32 structure is provided at the bottom of the positioning groove 35 to install the positioning ejector pin 33 and accommodate the screw.

[0037] The frame 1 is provided with a nut supply device 6 for placing nuts into the positioning groove 35; the nut supply device 6 includes a nut vibrating plate, a nut feeding trough and a nut discharge module located at the output end of the nut feeding trough. The nut vibrating plate conveys the nuts to the nut feeding trough by vibration. As the nuts are pushed, the nuts gradually move to the output end of the nut feeding trough and enter the nut discharge module. The nut discharge module lowers the nuts into the positioning groove 35.

[0038] The nut discharge module carries the nuts through a loading plate, which is provided with a guide groove. One side of the guide groove in the horizontal direction is an open side, and the bottom of the guide groove is provided with a hollow portion for the positioning ejector pin 33 to pass through, and the hollow portion extends to the open side of the guide groove. The loading plate first descends to allow the nut to be sleeved on the positioning ejector pin 33, and then the loading plate moves horizontally away from under the nut, and the nut slides down along the positioning ejector pin 33 to the positioning groove 35; of course, it is also feasible to use the principle of negative pressure adsorption to absorb and place the nut, and this application does not limit this.

[0039] In this embodiment, an elastic washer supply device 7 is provided on the frame 1 . The elastic washer supply device 7 is similar to the nut supply device 6 . The elastic washer supply device 7 is used to place the elastic washer above the nut in the positioning groove 35 .

[0040] In this embodiment, an elastic gasket supply device 8 is provided on the frame 1 . The elastic gasket supply device 8 is similar to the nut supply device 6 . The elastic gasket supply device 8 is used to place the elastic gasket above the elastic gasket in the positioning groove 35 .

[0041] During actual operation, the placing seat 3 on the turntable 2 is connected to the nut supply device 6, the elastic washer supply device 7 and the elastic gasket supply device 8 in sequence, and then connected to the loading station. At this time, the sheet metal is placed in the recessed portion 31, which can cover the elastic gasket, and the positioning ejector pin 33 located in the accommodating groove 34 can also pass through the ground wire hole on the sheet metal.

[0042] In this embodiment, a plurality of support rollers are provided on the frame 1, the support rollers are located below the turntable 2, the support rollers extend in the radial direction of the turntable 2, and the plurality of support rollers are evenly distributed circumferentially around the axis of the turntable 2 to support the rotation of the turntable 2;

[0043] The turntable 2 is driven to rotate by a corresponding driving source, and the driving source is hidden inside the frame 1 .

[0044] In this embodiment, the automatic screw locking device 4 includes multiple screw chucks and screwdrivers corresponding to the screw chucks one by one, and both the screw chucks and the screwdrivers can be raised and lowered; the structure of the automatic screw locking device 4 can refer to patent CN109866010A and patent CN107336001A, only the number of screw chucks and screwdrivers is different, and this application will not go into details here.

[0045] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A terminal block automatic screw locking machine, comprising a frame, characterized in that: The frame is provided with a turntable, and a plurality of material placement seats are provided on the turntable. An automatic screw locking device and a material unloading manipulator are provided on the frame around the turntable. The turntable drives the material placement seats to rotate so that the material placement seats can dock with the automatic screw locking device and the material unloading manipulator. The top of the material placement seat is provided with a recessed portion for placing and positioning the sheet metal part, the recessed portion is provided with a clearance hole corresponding to the threaded hole of the sheet metal part, a positioning ejector is provided in the clearance hole, and the positioning ejector can be elastically lifted and lowered; when the screw is not locked, the top of the positioning ejector is higher than the sheet metal part; The automatic screw locking device locks the screws onto the sheet metal part located on the material placement seat, and the unloading robot completes the removal of the sheet metal part locked with the screws.

2. The terminal block automatic screw locking machine according to claim 1, characterized in that: The positioning ejector pin comprises an anti-slip section and a positioning section which are connected in sequence from bottom to top, and the outer diameter of the anti-slip section is larger than the outer diameter of the positioning section; The air avoidance hole penetrates from top to bottom, and includes an installation section, a limiting section and an air avoidance section which are connected in sequence from bottom to top. The inner diameter of the installation section is larger than the outer diameter of the anti-slip section, the inner diameter of the limiting section is matched with the outer diameter of the positioning section, the inner diameter of the air avoidance section is larger than the outer diameter of the positioning section, and a spring is provided in the installation section, and the spring is located below the anti-slip section.

3. The terminal block automatic screw locking machine according to claim 2, characterized in that: The rotating disk is provided with a bottom plate corresponding to the material placing seats one by one, the material placing seats are fixed on the bottom plate, and the bottom plate is provided with a through hole docking with the mounting section.

4. The terminal block automatic screw locking machine according to claim 1, characterized in that: The recessed portion is provided with a receiving groove corresponding to the ground wire hole of the sheet metal part, the bottom of the receiving groove is provided with a positioning groove adapted to the nut, a positioning ejector pin is provided in the positioning groove, and the positioning ejector pin can be elastically lifted and lowered; when the screw is not locked, the top end of the positioning ejector pin is higher than the sheet metal part; The frame is provided with a nut supply device for placing nuts into the positioning grooves.

5. The terminal block automatic screw locking machine according to claim 4, characterized in that: An elastic washer supply device is provided on the frame, and the elastic washer supply device is used to place the elastic washer above the nut in the positioning groove.

6. The terminal block automatic screw locking machine according to claim 5, characterized in that: An elastic gasket supply device is provided on the frame, and the elastic gasket supply device is used to place the elastic gasket above the elastic gasket in the positioning groove.

7. The terminal block automatic screw locking machine according to claim 1, characterized in that: The frame is provided with a plurality of supporting rollers, the supporting rollers are located below the turntable, and the plurality of supporting rollers are evenly distributed circumferentially around the axis of the turntable to support the rotation of the turntable.

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