Gluing and screwing device and workpiece processed thereby

Abstract

This utility model discloses an adhesive application and tightening device and the workpiece it processes. The adhesive application and tightening device includes: a frame; a tooling fixture connected to the frame; an adhesive application device connected to the frame, the adhesive application device including a multi-axis motion mechanism and an adhesive gun, the multi-axis motion mechanism being used to adjust the position of the adhesive gun; and a tightening device connected to the frame, the tightening device including a displacement mechanism, a tightening gun, and a transverse transmission arm. The displacement mechanism is used to adjust the position of the tightening gun, the tightening gun having a rotatable bit, one end of the transverse transmission arm having a connector for transmission connection with the bit, and the other end of the transverse transmission arm having a threaded sleeve for remote transmission connection with the connector, the rotation axis of the threaded sleeve being parallel to the rotation axis of the bit. Compared with the prior art, this utility model can apply adhesive and tighten irregular product structures and accessory combinations, avoiding vertical interference, effectively ensuring the torque requirements of the product, thereby improving the processing quality of the product.

Description

Technical Field

[0001] This utility model relates to the technical field of machining, and in particular to adhesive application and tightening equipment and the workpieces processed therefrom. Background Technology

[0002] As per customer requirements, automotive aluminum alloy castings need to be glued and tightened after machining to improve the reliability and sealing of threaded connections. Existing glue-applying and tightening equipment requires a vertical tightening shaft, which is inadequate for some irregular product structures and component assemblies, such as... Figure 1 As shown in the figure, when the tightening gun is tightened vertically, it will cause vertical interference with the main structure, resulting in the tightening force of the product not meeting the requirements of the drawing and affecting the processing quality. Utility Model Content

[0003] The present invention aims to provide an adhesive application and tightening device to solve the technical problems existing in the prior art.

[0004] According to a first aspect of the present invention, the adhesive application and tightening device includes:

[0005] frame;

[0006] A tooling fixture is provided on the machine frame and is used to hold the workpiece to be processed;

[0007] A glue-applying device is provided on the frame. The glue-applying device includes a multi-axis motion mechanism and a glue-applying gun. The multi-axis motion mechanism is used to adjust the position of the glue-applying gun. The workpiece to be processed is located on the moving path of the glue-applying gun.

[0008] A tightening device is provided on the frame. The tightening device includes a displacement mechanism, a tightening gun, and a transverse transmission arm. The tightening gun is vertically arranged. The displacement mechanism is used to adjust the position of the tightening gun. The tightening gun is equipped with a rotatable bit. One end of the transverse transmission arm is equipped with a connector that is connected to the bit for transmission. The other end of the transverse transmission arm is equipped with a threaded sleeve that is connected to the connector for remote transmission. The rotation axis of the threaded sleeve is parallel to the rotation axis of the bit. The workpiece to be processed is located on the movement path of the threaded sleeve.

[0009] The gluing and tightening device according to the embodiments of this utility model has at least the following beneficial effects: When it is necessary to apply glue to the workpiece, since the workpiece is located on the moving path of the gluing gun, the gluing gun can apply glue at any position on the workpiece. When the workpiece needs to be assembled with bolts, the displacement mechanism controls the tightening gun to move to the designated position so that the threaded sleeve can be fitted into the bolt head. Then the tightening gun starts to drive the threaded sleeve to tighten the bolt. Since the tightening gun transmits torque to the bolt through the transverse transmission arm, the tightening shaft of the tightening gun can maintain a certain distance from the central axis of the bolt, avoiding vertical interference between the tightening gun and the workpiece during the tightening action. Compared with the prior art, this utility model can apply glue and tighten irregular product structures and accessory combinations, avoid vertical interference, effectively ensure the torque requirements of the product, and thus improve the processing quality of the product.

[0010] According to some embodiments of this utility model, the tightening gun is equipped with a torque sensor, which is used to detect the torque of the bit. Since the tightening gun needs to operate at a preset torque, a torque sensor is required to detect the torque of the tightening gun so that the controller can control it.

[0011] According to some embodiments of this utility model, the frame is provided with a calibration platform next to the tightening device. The calibration platform is equipped with a torque calibrator, which can be connected to the threaded sleeve or the screwdriver bit for transmission. Since the actual working end of the tightening device is the threaded sleeve, while the power supply end is the tightening gun, there is a certain coefficient relationship between the two. The torque of the tightening gun cannot be directly equated to the torque provided by the threaded sleeve. Therefore, the function of the torque calibrator is to calibrate the torque of the threaded sleeve and to calibrate the torque of the tightening gun, ensuring the reliability of the parameters. Assuming the torque of the tightening gun is 100 Nm, but the torque calibrator detects that the torque of the threaded sleeve is 98 Nm, then the conversion factor between the two is 98 / 100. If the transverse transmission arm is removed, the torque of the tightening gun can be directly calibrated.

[0012] According to some embodiments of this utility model, the tightening device is further provided with a displacement monitoring system, which is used to record the tightening position of the tightening gun. For the same batch of workpieces to be processed, there are fixed tightening positions. If the displacement monitoring system detects that the tightening gun is missing a tightening record at the predetermined tightening position or is tightening at a position offset from the predetermined tightening position, it means that the bolt at that tightening position has not been tightened.

[0013] According to some embodiments of this utility model, the displacement monitoring system is electrically connected to an alarm. Once the displacement monitoring system detects that a bolt has not been tightened, the alarm will sound an alarm to remind manual intervention.

[0014] According to some embodiments of this utility model, the lateral power transmission arm is provided with a transmission assembly, and the joint and the screw sleeve serve as the input and output ends of the transmission assembly, respectively. The transmission assembly may be a gear transmission pair.

[0015] According to some embodiments of this utility model, the transmission ratio of the transmission component is 1:1, which facilitates control and debugging.

[0016] The workpiece according to the second aspect of the present invention is processed by the above-described adhesive application and tightening equipment.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 It is a top view of the part to be processed in the target production;

[0020] Figure 2 This is a three-dimensional structural diagram of the adhesive application and tightening device provided in this embodiment of the utility model;

[0021] Figure 3 yes Figure 2 The front view of the adhesive application and tightening equipment is shown below;

[0022] Figure 4 This is a connection diagram of the tightening gun and the transverse transmission arm provided in this embodiment of the utility model;

[0023] Figure 5 This is a cross-sectional view of the lateral power transmission arm provided in an embodiment of the present utility model;

[0024] Figure 6 It is an exploded view of the assembly of the parts to be processed in the target production;

[0025] Figure 7 yes Figure 2 The enlarged view of the adhesive application and tightening equipment at point A.

[0026] In the attached diagram: 100-Frame, 200-Tooling fixture, 300-Glue applicator, 400-Tightening device, 110-Base cabinet, 120-Side cabinet, 130-Machining chamber, 500-Workpiece to be processed, 131-Workbench, 510-Lower cylinder, 520-Upper cylinder, 511-Opening, 512-Threaded hole, 522-Bolt hole, 530-Bolt, 310-Multi-axis motion mechanism, 320-Glue gun, 330-Glue storage tank, 410-Displacement mechanism, 420-Tightening gun, 430-Horizontal transmission arm, 421-Screwdriver bit, 431-Connector, 432-Threaded sleeve, 433-Transmission assembly, 540-Positioning column, 600-Calibration platform, 610-Torque calibrator, 700-Alarm. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0028] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0031] like Figure 2 and Figure 3As shown, the gluing and tightening device according to the first aspect of this utility model includes a frame 100, a tooling fixture 200, a gluing device 300, and a tightening device 400. The frame 100 serves as the mounting reference for all components and is arranged in the form of a cabinet. A base cabinet 110 is provided at the bottom, a side cabinet 120 is provided on the side, and the remaining space is a processing chamber 130. The base cabinet 110 is used to install a hydraulic system or other heavy equipment, the side cabinet 120 is used to install a control system or other light equipment, and the processing chamber 130 is located above the base cabinet 110 and beside the side cabinet 120. The processing chamber 130 is provided with a workbench 131, on which the tooling fixture 200, the gluing device 300, and the tightening device 400 are provided.

[0032] In this embodiment, according to the positioning requirements of the workpiece 500, the positioning surface of the fixture 200 is vertical, meaning the workpiece 500 is clamped vertically, and the positioning surface is behind the workpiece 500. The positioning direction of the fixture 200 is determined according to the processing requirements of the workpiece 500; this invention does not limit the positioning direction of the fixture 200. In other embodiments, the fixture 200 can also be positioned horizontally, meaning the workpiece 500 is clamped laterally, and the positioning surface is below the workpiece 500.

[0033] like Figure 6 As shown, the workpiece 500 to be processed is mainly divided into a lower cylinder body 510 and an upper cylinder body 520. The lower cylinder body 510 has an opening 511 that mates with the upper cylinder body 520 and a threaded hole 512, while the upper cylinder body 520 has a corresponding mating interface and a bolt hole 522. Currently, the customer's processing requirements are: first, use glue to bond the mating interface of the upper cylinder body 520 to the opening 511 of the lower cylinder body 510 to maintain a seal at the joint, and then use bolts 530 to fix the two together. Since the tightening of one of the bolts 530 is affected by the vertical interference of the upper cylinder body 520, this interference needs to be avoided; otherwise, it will be impossible to tighten it smoothly using the tightening gun 420.

[0034] like Figure 2 and Figure 3As shown, the glue application device 300 includes a multi-axis motion mechanism 310, a glue application gun 320, and a glue storage tank 330. The glue application gun 320 is installed at the execution end of the multi-axis motion mechanism 310. The multi-axis motion mechanism 310 has at least two degrees of freedom. The specific structure of each degree of freedom can adopt an existing linear drive mechanism, such as a lead screw and nut linear drive mechanism, a gear and rack linear drive mechanism, etc. In this embodiment, since the tooling fixture 200 has a degree of freedom to move in the front-back direction, the multi-axis motion mechanism 310 only needs to have a degree of freedom to move in the left-right direction and the up-down direction. The linkage between the multi-axis motion mechanism 310 and the tooling fixture 200 enables the tightening gun 420 to apply glue to any position of the workpiece 500. The glue application gun 320 can use existing technology, which draws glue from the glue storage tank 330 and squeezes the glue through the nozzle of the glue application gun 320 to the designated position of the workpiece 500. With the linkage of the multi-axis motion mechanism 310 and the tooling fixture 200, the glue gun 320 can apply glue along the predetermined path of the workpiece 500, for example, along the opening 511 of the lower cylinder 510.

[0035] In some other embodiments, the tooling fixture 200 may be fixed, in which case the multi-axis motion mechanism 310 needs to have degrees of freedom of movement in the front-back direction, left-right direction and up-down direction, and is not limited to the above embodiments.

[0036] like Figures 2 to 5 As shown, the tightening device 400 includes a displacement mechanism 410, a tightening gun 420, and a transverse transmission arm 430. The tightening gun 420 is vertically positioned and mounted on the execution end of the displacement mechanism 410. The displacement mechanism 410 has three degrees of freedom. The specific structure of each degree of freedom can adopt an existing linear drive mechanism, such as a lead screw and nut linear drive mechanism, a gear and rack linear drive mechanism, an electric push rod, a cylinder, or other linear drive mechanisms. In this embodiment, although the tooling fixture 200 has a degree of freedom to move in the front-back direction, since the tightening position of the tightening device 400 needs to be continuously monitored in the subsequent process to avoid any missed tightening, the displacement mechanism 410 should retain complete three-axis degrees of freedom and not be linked with the tooling fixture 200.

[0037] The tightening gun 420 utilizes existing technology, driving the bit 421 to rotate via a motor and reduction gear. A controller precisely adjusts the motor's speed and current to achieve accurate torque output. Furthermore, an equipped torque sensor further enhances the precision of tightening control. Since the tightening gun 420 needs to operate at a preset torque, a torque sensor is required to detect its torque for the controller to manage. In automated production lines, the tightening gun 420 can be programmed to complete tightening operations according to a preset program.

[0038] Because one of the bolts 530 on the workpiece 500 is subjected to vertical interference from the upper cylinder 520 when tightening, directly tightening the bolt 530 using the tightening gun 420 cannot meet the processing requirements. To solve the above technical problem, the input end of the transverse transmission arm 430 is provided with a connector 431, and the output end of the transverse transmission arm 430 is provided with a threaded sleeve 432. The threaded sleeve 432 and the connector 431 are remotely connected via a transmission assembly 433. In this embodiment, since gear transmission pairs have the advantages of high transmission efficiency, the transmission assembly 433 can be selected as a gear transmission pair with a transmission ratio of 1:1, that is, the connector 431 and the threaded sleeve 432 maintain the same angular velocity for transmission. At the same time, the bit 421 of the tightening gun 420 is connected to the connector 431 of the transverse transmission arm 430, so that the tightening gun 420 can drive the threaded sleeve 432 to rotate at the same angular velocity. At this time, the rotation axis of the threaded sleeve 432 is parallel to the rotation axis of the bit 421.

[0039] In other embodiments, the transmission component 433 may also be a worm gear transmission pair. Regardless of the specific structure of the transmission component 433, its transmission ratio may be selected from other parameters, and is not limited to the above embodiments.

[0040] like Figure 6 and Figure 7 As shown, using the above structure, during processing, the lower cylinder 510 is first fixed using the tooling fixture 200. Then, the glue application process is started. Under the linkage of the multi-axis motion mechanism 310 and the tooling fixture 200, the glue gun 320 applies glue along the opening 511 of the lower cylinder 510, thus completing the glue application process. After this, the upper cylinder 520 is manually or mechanically attached to the upper side of the lower cylinder 510. Positioning pins 540 are used to align the threaded holes 512 of the lower cylinder 510 with the bolt holes 522 of the upper cylinder 520 to prevent positional misalignment during bonding, which could lead to product scrap. After a period of settling, all positioning pins 540 are removed, and bolts 530 are manually or mechanically inserted into the bolt holes 522 of the upper cylinder 520. Subsequently, the tightening procedure is started. Driven by the displacement mechanism 410, the threaded sleeve 432 is inserted into the bolts 530 to be tightened one by one. Driven by the tightening gun 420, the threaded sleeve 432 tightens the bolts 530 with the set torque, thus completing the tightening process.

[0041] Since the tightening gun 420 transmits torque to the bolt 530 through the transverse transmission arm 430, the tightening shaft of the tightening gun 420 can maintain a certain distance from the central axis of the bolt 530, avoiding vertical interference between the tightening gun 420 and the upper cylinder 520 during the tightening action. This utility model can apply glue and tighten irregular product structures and accessory combinations, avoiding vertical interference, effectively ensuring the torque requirements of the product, thereby improving the processing quality of the product.

[0042] like Figure 2 and Figure 3 As shown, in some embodiments of this utility model, the frame 100 is provided with a calibration platform 600 next to the tightening device 400. The calibration platform 600 is equipped with a torque calibrator 610, which can be connected to the threaded sleeve 432 or the screwdriver bit 421 for transmission. Since the actual working end of the tightening device 400 is the threaded sleeve 432, while the power supply end is the tightening gun 420, there is a certain coefficient relationship between the two. The torque of the tightening gun 420 cannot be directly used to fit the torque provided by the threaded sleeve 432. Therefore, the function of the torque calibrator 610 is to calibrate the torque of the threaded sleeve 432 and to calibrate the torque of the tightening gun 420 to ensure the reliability of the parameters.

[0043] Assuming the torque of the tightening gun 420 is 100 Nm, but the torque calibrator 610 detects a torque of 98 Nm for the threaded sleeve 432, then the conversion factor between the two is 98 / 100 = 0.98, and this conversion factor is entered into the control system. If the torque of bolt 530 needs to reach 120 Nm according to the design drawing, then the torque output by the tightening gun 420 will be approximately 120 / 0.98 ≈ 122.45 Nm.

[0044] When it is necessary to calibrate the torque of the tightening gun 420, simply remove the transverse transmission arm 430, connect the bit 421 of the tightening gun 420 to the torque calibrator 610, and use the torque detected by the torque calibrator 610 to calibrate the torque of the tightening gun 420.

[0045] Assuming the torque calibrator 610 detects a torque of 102 Nm, but the torque sensor of the tightening gun 420 detects a torque of 100 Nm, then the motor parameters, such as the output power, need to be adjusted to ensure the torque detected by the torque calibrator 610 reaches 100 Nm. This parameter is then used as the new operating parameter, and the torque sensor is simultaneously calibrated to 100 Nm. After this, the calibration is repeated, setting the target torque to a different value, such as 120 Nm. If the difference between the torque detected by the torque calibrator 610 and the torque detected by the torque sensor is within the tolerance range, the calibration ends; otherwise, the calibration continues.

[0046] In some embodiments of this utility model, the tightening device 400 is further provided with a displacement monitoring system, which consists of sensors distributed at different locations. The displacement monitoring system is used to record the tightening position of the tightening gun 420. For the same batch of workpieces 500 to be processed, they have fixed tightening positions. If the displacement monitoring system detects that the tightening gun 420 is missing a tightening record at the predetermined tightening position or is tightening at a position offset from the predetermined tightening position, it means that the bolt 530 at the predetermined tightening position has not been tightened.

[0047] Furthermore, the displacement monitoring system is electrically connected to an alarm 700. Once the displacement monitoring system detects that a bolt 530 has not been tightened, the alarm 700 will immediately sound an alarm to remind manual intervention.

[0048] According to the second aspect of the present invention, the workpiece is processed by the glue application and tightening equipment of the first aspect of the present invention. After processing, the joint of the workpiece is bonded and sealed with glue, and the bolts 530 in special positions are also tightened, eliminating the need for manual tightening in subsequent processes, thus effectively improving production efficiency.

[0049] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An adhesive application and tightening device, characterized in that, include: Rack (100); A tooling fixture (200) is provided on the frame (100) and is used to hold the workpiece (500) to be processed. A glue-applying device (300) is provided on the frame (100). The glue-applying device (300) includes a multi-axis motion mechanism (310) and a glue-applying gun (320). The multi-axis motion mechanism (310) is used to adjust the position of the glue-applying gun (320). The workpiece (500) to be processed is located on the moving path of the glue-applying gun (320). A tightening device (400) is provided on the frame (100). The tightening device (400) includes a displacement mechanism (410), a tightening gun (420), and a transverse transmission arm (430). The tightening gun (420) is vertically arranged. The displacement mechanism (410) is used to adjust the position of the tightening gun (420). The tightening gun (420) is provided with a rotatable bit (421). One end of the transverse transmission arm (430) is provided with a connector (431) that is connected to the bit (421) for transmission. The other end of the transverse transmission arm (430) is provided with a threaded sleeve (432) that is connected to the connector (431) for remote transmission. The rotation axis of the threaded sleeve (432) is parallel to the rotation axis of the bit (421). The workpiece (500) to be processed is located on the moving path of the threaded sleeve (432).

2. The adhesive application and tightening equipment according to claim 1, characterized in that: The tightening gun (420) is equipped with a torque sensor for detecting the torque of the bit (421).

3. The adhesive application and tightening equipment according to claim 2, characterized in that: The frame (100) is provided with a calibration platform (600) on the side of the tightening device (400). The calibration platform (600) is provided with a torque calibrator (610). The torque calibrator (610) can be connected to the screw sleeve (432) or the bit (421) for transmission.

4. The adhesive application and tightening equipment according to claim 1, characterized in that: The tightening device (400) is also equipped with a displacement monitoring system, which is used to record the tightening position of the tightening gun (420).

5. The adhesive application and tightening equipment according to claim 4, characterized in that: The displacement monitoring system is electrically connected to an alarm (700).

6. The adhesive application and tightening equipment according to claim 1, characterized in that: The transverse power transmission arm (430) is provided with a transmission assembly (433), and the connector (431) and the screw sleeve (432) serve as the input end and output end of the transmission assembly (433), respectively.

7. The adhesive application and tightening equipment according to claim 6, characterized in that: The transmission ratio of the transmission assembly (433) is 1:

1.

8. A workpiece, characterized in that: The workpiece is processed using the adhesive application and tightening equipment as described in any one of claims 1 to 7.

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