A multi-specification end button box screw fastening device

Abstract

The utility model discloses a kind of multi-specification end button box screw fastening equipment, overcome multi-specification compatibility is poor, insufficient efficiency and other defects.It includes: operating platform, at least two stations are provided on it, clamp for clamping end button box is provided on each station;Screw mechanism is located above operating platform;Screw mechanism is integrally installed on the output shaft of lifting drive mechanism, to be driven by the lifting drive mechanism to lift on operating platform;Lifting drive mechanism is installed on the output shaft of transverse drive mechanism, to be driven by the transverse drive mechanism to drive lifting drive mechanism along with screw mechanism transverse displacement, to switch between at least two stations.It enables one station to carry out screw fastening operation, another station can simultaneously carry out feeding or discharging operation, realizes efficient continuous alternate operation, reduces equipment waiting time, eliminates the downtime of traditional single-station equipment or manual operation time-consuming, to improve overall production efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of electricity meter production equipment, and in particular to a screw fastening device for multi-specification end knob boxes. Background Technology

[0002] Terminal blocks are critical components in power and electronic equipment used to connect and secure wire terminals, typically secured by screws. Tightening these screws is an essential step in the production or assembly of terminal blocks. Currently, this process is mainly performed manually or with semi-automatic equipment.

[0003] For manual operation, workers need to use an electric screwdriver or screwdriver to find and align the screw holes on the end cap box one by one to tighten them. This method is not only inefficient and labor-intensive, but also prone to quality problems such as missed tightening and stripped threads due to the variety of end cap box specifications, their external dimensions, screw hole positions and numbers may vary. Frequent changes in product specifications will further reduce production efficiency and may lead to quality problems such as missed tightening and stripped threads due to fatigue.

[0004] To improve efficiency, some automatic or semi-automatic screw-tightening devices have appeared on the market. However, these devices typically have the following limitations: 1. Poor compatibility with multiple specifications: Most equipment is designed for end-button boxes of a single specification, and the position of its screw-tightening mechanism is fixed. When it is necessary to process end-button boxes of different specifications and with different screw hole layouts, the machine must be stopped and the equipment must be subjected to tedious mechanical structure adjustments or reprogramming and calibration. The debugging time is long and it cannot quickly respond to flexible and changing production needs.

[0005] 2. Insufficient efficiency: Most existing equipment is a single-station structure, with the feeding and screw tightening processes carried out in parallel. When the equipment is tightening the screws of the end button box at the current station, it cannot simultaneously complete the feeding operation of the next end button box to be processed, resulting in a large amount of idle time for the equipment. It is difficult to improve the overall production cycle and cannot meet the efficiency requirements of large-scale mass production.

[0006] 3. Complex structure: In order to accommodate screws with multiple holes or different positions, some equipment adopts a solution of configuring a separate screw gun for each screw hole, resulting in complex equipment structure, high cost and large space occupation. Utility Model Content

[0007] The purpose of this utility model is to overcome the shortcomings of existing technologies, such as poor compatibility with multiple specifications, insufficient efficiency, and complex structure, which make it difficult to meet the assembly requirements of high efficiency, flexibility, and low cost in the mass production of end button boxes. This utility model provides a screw fastening device for multi-specification end button boxes.

[0008] The technical solution of this utility model includes: an operating table with at least two workstations, each workstation having a clamp for holding end-capsule boxes; a screw-tightening mechanism located above the operating table; a lifting drive mechanism, the screw-tightening mechanism being integrally mounted on the output shaft of the lifting drive mechanism so as to be driven by the lifting drive mechanism to move up and down on the operating table; and a lateral drive mechanism, the lifting drive mechanism being mounted on the output shaft of the lateral drive mechanism so as to drive the lifting drive mechanism and the screw-tightening mechanism to move laterally, thereby switching between the at least two workstations; wherein, the clamps of the at least two workstations are configured to alternately perform loading and fastening operations.

[0009] By adopting the above technical solution, an operating platform with at least two workstations is set up, and a horizontal drive mechanism drives the screw-tightening mechanism to switch between workstations. A lifting drive mechanism realizes the lifting and lowering of the screw-tightening mechanism. At the same time, a fixture that can alternately feed and tighten screws is configured, so that when one workstation is performing screw tightening operations, another workstation can simultaneously perform feeding or unloading operations. This achieves efficient and continuous alternating operations, reduces equipment waiting time, and eliminates the downtime for feeding that occurs with traditional single-workstation equipment or manual operation, thereby improving overall production efficiency. Furthermore, by integrating screw tightening, lifting, and horizontal shifting actions and automating them, the reliance on skilled workers is reduced, the labor intensity of workers is lessened, and the consistency of product quality is ensured, reducing problems such as missed screws and uneven torque caused by manual operation.

[0010] In one possible design, an adjustment mechanism is also included, comprising: a lateral adjustment plate, linked to the output shaft of the lifting drive mechanism, having multiple lateral adjustment holes thereon; a longitudinal adjustment plate, mounted on the lateral adjustment plate, having multiple longitudinal adjustment holes thereon; and a fixing plate, mounted on the longitudinal adjustment plate; wherein, the screw-tightening mechanism includes a screwdriver, which is fixedly mounted on the fixing plate; the longitudinal adjustment plate is fixed in its lateral position on the lateral adjustment plate by selecting fasteners that mate with different lateral adjustment holes; the fixing plate is fixed in its longitudinal position on the longitudinal adjustment plate by selecting fasteners that mate with different longitudinal adjustment holes.

[0011] By adopting the above design, and by setting an adjustment mechanism with horizontal and vertical adjustment plates, and using simple fasteners in conjunction with the adjustment holes, the position of the screw gun in the horizontal and vertical planes can be finely adjusted. This allows the same machine to quickly and accurately adapt to changes in the position of screw holes on different sizes of end cap boxes, solving the problem of poor adaptability of traditional equipment due to the fixed position of the screw gun. Furthermore, when changing product specifications, there is no need to replace the entire machine or perform complex mechanical reconstruction. Simply loosening or tightening the fasteners is enough to manually recalibrate the position of the screw gun, shortening the time for equipment debugging and production line changeover, simplifying the equipment structure, and reducing the equipment manufacturing cost.

[0012] In one possible design, the screw-tightening mechanism also includes a gun body rotation drive and a double-joint coupling; the gun body rotation drive is fixed to the output shaft of the lifting drive mechanism; one end of the double-joint coupling is connected to the output shaft of the gun body rotation drive, and the other end is connected to the screw gun.

[0013] With the above design, the screw gun rotation drive can drive the screw gun to rotate, and the double-joint universal joint coupling can adapt to the position changes of the screw gun after horizontal and vertical adjustment. In this way, even if the adjustment mechanism changes the final spatial position of the screw gun, the universal joint can effectively transmit torque to ensure the screw gun rotates normally.

[0014] In one possible design, both the lateral adjustment holes and the longitudinal adjustment holes are arranged at equal intervals.

[0015] The above design ensures the precision and consistency of adjustment, allowing for quantification of adjustment amounts when switching between end knob boxes of different specifications. It also provides high repeatability and improves production changeover efficiency and ease of operation.

[0016] In one possible design, the operating table is equipped with a longitudinal drive, a longitudinal lead screw pair, and a longitudinal slide; the input end of the longitudinal lead screw pair is connected to the output shaft of the longitudinal drive, and the output end of the longitudinal lead screw pair is connected to the longitudinal slide; the fixture is fixedly installed on the longitudinal slide, and the longitudinal slide drives the fixture to move longitudinally a preset distance through the longitudinal lead screw pair.

[0017] By adopting the above design, the drive fixture moves longitudinally together with the end cap, allowing a fixed screw gun to cover multiple screw holes arranged longitudinally on the end cap. This expands the processing capacity of a single station and a single screw-tightening mechanism, and avoids configuring a separate screw gun and drive system for each longitudinally arranged screw hole. A relatively simple longitudinal movement mechanism replaces multiple expensive tightening units, simplifying the equipment structure and reducing manufacturing costs and maintenance difficulty.

[0018] In one possible design, the screw-tightening mechanism includes a screw-supplying vibratory feeder, which is connected to the screw gun via a feed channel.

[0019] With the above design, the screw supply vibratory feeder realizes automatic sorting and continuous conveying of screws. The screws are conveyed to the screw gun through the feed channel, eliminating the need for manual feeding and ensuring the continuity of screw fastening operations, which helps to improve production efficiency.

[0020] In one possible design, the lateral drive mechanism is a lead screw and nut mechanism.

[0021] With the above design, the mechanism has the advantages of high transmission efficiency, accurate positioning, and good self-locking. This ensures that the screw-tightening mechanism can accurately and stably stop at the target position when switching between multiple workstations, thereby ensuring the alignment accuracy of the screw gun and the screw hole on the end cap and improving the reliability of the fastening operation. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the structure of the operating table of this utility model; Figure 4 This is a partial structural schematic diagram of the present invention; Figure 5 This is a schematic diagram of the adjustment mechanism of this utility model; Among them, 1. Operating table; 11. First station; 12. Second station; 13. Fixture; 14. Longitudinal movement drive; 15. Longitudinal movement slide; 100. End button box; 2. Screw tightening mechanism; 21. Screw gun; 22. Screw gun body rotation drive; 23. Double-headed universal joint mechanism; 3. Lifting drive mechanism; 4. Lateral drive mechanism; 5. Adjustment mechanism; 51. Lateral adjustment plate; 511. Lateral adjustment hole; 52. Longitudinal adjustment plate; 521. Longitudinal adjustment hole; 53. Fixing plate. Detailed Implementation

[0023] like Figures 1 to 2 The device shown is an application for fastening screws in multi-specification end-button boxes, which includes an operating table 1, a screw tightening mechanism 2, a lifting drive mechanism 3, a horizontal drive mechanism 4, and an adjustment mechanism 5.

[0024] like Figures 1 to 3 As shown, the operating table 1 serves as the basic platform of the equipment. Two workstations, the first workstation 11 and the second workstation 12, are arranged parallel to each other in the horizontal direction (X-direction). Each workstation is equipped with a clamp 13 for holding the end-button box 100. The operating table 1 also includes a longitudinal drive 14, a longitudinal lead screw pair, and a longitudinal slide 15. The longitudinal drive 14 is preferably a servo motor, whose output shaft is connected to the lead screw input end of the longitudinal lead screw pair via a belt. The longitudinal slide 15 is fixedly connected to the nut seat of the longitudinal lead screw pair, and the clamp 13 is fixedly mounted on the longitudinal slide 15. Thus, when the longitudinal drive 14 operates, it can drive the longitudinal slide 15, along with the clamp 13 and the end-button box 100, to move a preset distance in the longitudinal direction (Y-direction) via the longitudinal lead screw pair.

[0025] The transverse drive mechanism 4 is fixedly mounted on the top of the operating table 1 via a bracket. It is preferably a lead screw and nut mechanism driven by a servo motor. The lifting drive mechanism 3 is preferably an electric cylinder or a pneumatic cylinder. It is fixedly mounted on the slide or nut seat of the transverse drive mechanism 4 via a mounting plate, so that the transverse drive mechanism 4 can drive the entire mechanism to move laterally, thereby achieving the switching between the first station 11 and the second station 12.

[0026] like Figure 1 , Figure 2 , Figure 5 As shown, the output shaft of the lifting drive mechanism 3 is vertically downward, and an elastic structure is provided on its output shaft. This elastic structure is ultimately used for the screw-tightening mechanism 2 to make elastic contact with the screw, so as to avoid damaging the screw and facilitate screw-in. The adjusting mechanism 5 is linked to the output shaft of the lifting drive mechanism 3. Specifically, the adjusting mechanism 5 includes a horizontal adjusting plate 51, a vertical adjusting plate 52, and a fixing plate 53. The horizontal adjusting plate 51 is fixedly connected to the output shaft of the lifting drive mechanism 3 through a connecting structure. The horizontal adjusting plate 51 has multiple horizontal adjusting holes 511 arranged at equal intervals along the horizontal X direction. The vertical adjusting plate 52 is installed and fixed above the horizontal adjusting plate 51 by fasteners (such as bolts) passing through different horizontal adjusting holes 511. By selecting different horizontal adjusting holes 511 for fixing, the horizontal position of the vertical adjusting plate 52 relative to the horizontal adjusting plate 51 can be adjusted. The vertical adjusting plate 52 has multiple vertical adjusting holes 521 arranged at equal intervals along the vertical Y direction. The fixing plate 53 is installed and fixed on the longitudinal adjustment plate 52 by fasteners passing through different longitudinal adjustment holes 521. By selecting different longitudinal adjustment holes 521 for fixing, the longitudinal position of the fixing plate 53 relative to the longitudinal adjustment plate 52 can be adjusted.

[0027] like Figure 1 , Figure 2 , Figure 4 As shown, the screw-tightening mechanism 2 has at least one set, preferably four sets, each set tightening the screws corresponding to the end cap 100. Each set of screw-tightening mechanisms 2 includes a screw gun 21, a gun body rotation drive 22, and a double-joint coupling 23. The gun body rotation drive 22 is a motor, which is fixedly mounted on the output shaft of the lifting drive mechanism 3 via a bracket. The screw gun 21 passes through and is mounted on the fixing plate 53 of the adjusting mechanism 5. The double-joint coupling 23 consists of a connecting rod and universal joints at both ends of the connecting rod. The universal joints are connected to the connecting rod in a cross-shaft manner. The upper universal joint of the double-joint coupling 23 is connected to the output shaft of the gun body rotation drive 22, and the lower universal joint is connected to the input shaft of the screw gun 21 for transmitting torque. In addition, the screw-tightening mechanism 2 also includes a screw supply vibratory feeder (not shown in the figure), which is connected to the screw gun 21 via a feed pipe for continuously supplying the screw gun 21 with orderly arranged screws.

[0028] The working process of this utility model is as follows: 1. Initial state: The horizontal drive mechanism 4 moves the screw tightening mechanism 2 above the first station 11, and the lifting drive mechanism 3 is in the raised state.

[0029] 2. Loading and Start-up: The worker or the automated loading mechanism clamps the first end cap box 100 onto the fixture 13 at the first station 11. At the same time, the second station 12 can be loaded or is already in standby mode.

[0030] III. First workstation operation: a. The lifting drive mechanism 3 drives the entire screw-tightening mechanism 2 to descend, so that the bit of the screwdriver 21 is aligned with the first screw hole on the end cap box 100.

[0031] b. The gun body rotation drive 22 is activated, which drives the screw gun 21 to rotate through the double-joint universal joint coupling 23, and screws the screw into the screw hole of the corresponding end box 100.

[0032] c. If the end cap box 100 has multiple longitudinally arranged screw holes, after tightening one screw, the lifting drive mechanism 3 drives the screw gun 21 to rise, and then the longitudinal drive component 14 is activated, driving the end cap box 100 to move longitudinally by one hole spacing through the longitudinal lead screw pair. Subsequently, the lifting drive mechanism 3 drives the screw gun 21 to descend again and tighten the next screw. This process is repeated until all screws in the same row on the end cap box 100 are tightened.

[0033] IV. Switching Workstations: After the screw tightening operation at the first workstation 11 is completed, the lifting drive mechanism 3 drives the screw tightening mechanism 2 to rise. Subsequently, the horizontal drive mechanism 4 operates, driving the screw tightening mechanism 2 to move laterally above the second workstation 12.

[0034] V. Second station operation and first station loading: The screw tightening mechanism 2 repeats the tightening operation of step three of the first station 11 at the second station 12. At the same time, the worker at the first station 11 removes the completed end button box 100 and installs the new end button box 100 to be processed.

[0035] VI. Cyclic Operation: When the second station 12 completes its work, the screw tightening mechanism 2 switches back to the first station 11 to start a new cycle, thereby realizing the alternating feeding and tightening of the two stations and forming continuous production.

[0036] When it is necessary to replace the end cap box with one of different specifications, the adjustment method is as follows: 1. Based on the shape of the new specification end cap box, decide whether to replace the corresponding fixture 13 at the workstation to adapt to the new specification end cap box.

[0037] 2. Loosen the fasteners of the fixed longitudinal adjustment plate 52 and the fixed plate 53. According to the screw hole positions of the new specification end button box, adjust the position of the screw gun 21 in the horizontal and vertical directions respectively. After alignment, tighten the fasteners again.

[0038] Thanks to the use of a double-joint universal joint coupling 23, the torque transmitted from the gun body rotation drive component 22 can be effectively transmitted regardless of how the position of the screw gun 21 is adjusted. There is no need to adjust the installation position of the gun body rotation drive component 22 and the lifting drive mechanism 3, making the adjustment process simple and quick.

Claims

1. A device for fastening multi-specification end-button boxes and screws, characterized in that: Including: The operating table (1) has at least two workstations, and each workstation is equipped with a clamp (13) for holding the end button box (100). A screw-tightening mechanism (2) is located above the operating table (1); The lifting drive mechanism (3) is integrally mounted on the output shaft of the lifting drive mechanism (3) so that it can be driven by the lifting drive mechanism (3) to lift and lower on the operating table (1); And a lateral drive mechanism (4), wherein the lifting drive mechanism (3) is mounted on the output shaft of the lateral drive mechanism (4) so ​​that the lifting drive mechanism (3) and the screw tightening mechanism (2) are laterally displaced by the lateral drive mechanism (4) so ​​as to switch between at least two workstations; Among them, the fixtures (13) at least two stations are configured to alternately perform loading and fastening operations.

2. The screw fastening device for multi-specification end cap boxes (100) according to claim 1, characterized in that: It also includes an adjustment mechanism (5), which includes: A horizontal adjustment plate (51) is linked to the output shaft of the lifting drive mechanism (3), and multiple horizontal adjustment holes (511) are provided on it. A longitudinal adjustment plate (52) is mounted on the transverse adjustment plate (51) and has a plurality of longitudinal adjustment holes (521) thereon; and A fixing plate (53) is installed on the longitudinal adjustment plate (52); The screw-tightening mechanism (2) includes a screw gun (21), which is fixedly mounted on the fixing plate (53); the longitudinal adjustment plate (52) is fixed in its lateral position on the lateral adjustment plate (51) by selecting fasteners that cooperate with different lateral adjustment holes (511); the fixing plate (53) is fixed in its longitudinal position on the longitudinal adjustment plate (52) by selecting fasteners that cooperate with different longitudinal adjustment holes (521).

3. The screw fastening device for multi-specification end cap boxes (100) according to claim 2, characterized in that: The screw-tightening mechanism (2) also includes a gun body rotation drive (22) and a double-joint coupling; the gun body rotation drive (22) is fixed on the output shaft of the lifting drive mechanism (3); one end of the double-joint coupling is connected to the output shaft of the gun body rotation drive (22), and the other end is connected to the screw gun (21).

4. The screw fastening device for multi-specification end-button boxes (100) according to claim 2 or 3, characterized in that: Both the lateral adjustment hole (511) and the longitudinal adjustment hole (521) are holes arranged at equal intervals.

5. The screw fastening device for multi-specification end-button boxes (100) according to claim 1 or 2, characterized in that: The operating table (1) is provided with a longitudinal movement drive (14), a longitudinal movement screw pair and a longitudinal movement slide (15); the input end of the longitudinal movement screw pair is connected to the output shaft of the longitudinal movement drive (14), and the output end of the longitudinal movement screw pair is connected to the longitudinal movement slide (15); the clamp (13) is fixedly installed on the longitudinal movement slide (15), and the longitudinal movement slide (15) drives the clamp (13) to move longitudinally a preset distance through the longitudinal movement screw pair.

6. The screw fastening device for multi-specification end cap boxes (100) according to claim 2, characterized in that: The screw-tightening mechanism (2) includes a screw-supply vibratory plate, which is connected to the screw gun (21) via a feed channel.

7. The screw fastening device for multi-specification end-button boxes (100) according to claim 1 or 2, characterized in that: The lateral drive mechanism (4) is a lead screw and nut mechanism.

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