An automatic thread locking device for new energy vehicle parts

Abstract

The present invention discloses an automatic thread locking device for new energy vehicle parts, wherein a placement rack is slidably installed above two moving rails, a driving cylinder is installed on the upper rear side of the machine platform, and a push rod of the driving cylinder is connected to the rear end of the placement rack, and positioning structures are installed on the left and right sides of the placement rack, and the two positioning structures are symmetrically distributed, a workpiece is placed on the placement rack, and a pressing mechanism is installed in an up and down lifting manner on the machine platform, and a pressure plate is installed on the top of the pressing mechanism, and a pressure head for pressing the workpiece is provided under the pressure plate. By arranging a hydraulic system, a pressing mechanism and a pressure plate, and combining them with a screw machine for automatic locking, a certain downward force is given to the workpiece to be locked before locking, thereby solving the problems of docking locking, repeated locking, rebound after locking and uneven torque, shortening the locking time by half, and meeting the torque qualification rate of one locking.

Description

Technical Field

[0001] The present invention relates to the field of waterway locking and sealing of automobile parts, and in particular to an automatic thread locking device for new energy automobile parts. Background Art

[0002] During the production and processing of water channel components of new energy vehicles, inspection ports are usually left on the top to facilitate subsequent inspection and maintenance. After production, a sealing cover needs to be threaded and locked on the inspection port to ensure the sealing effect. The current locking method is usually to place the sealing cover directly on the inspection port, and then use an automatic locking device to thread the sealing cover and the component together. The general automatic locking device can only perform simple thread locking operations, that is, to connect the two workpieces together with screws, and usually needs to be locked repeatedly. In other words, in order to ensure the consistency of the torque of each screw, multiple screws need to be pre-tightened in the screw hole to ensure that the sealing cover moves down to the same position and does not lift up at one end. However, this method is difficult to ensure rebound and uniform torque after locking. To this end, we designed an automatic thread locking device for new energy vehicle components. Summary of the Invention

[0003] The present invention proposes an automatic thread locking device for new energy vehicle parts, which solves the above problems.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A threaded automatic locking device for new energy vehicle parts comprises a machine platform, a three-axis slide is suspended above the machine platform by a bracket, a screw machine is lifted and lowered on the three-axis slide, and a visual device for observing screw holes and screw positions is installed on the side of the screw machine, two movable rails are symmetrically installed above the machine platform, a placement rack is slidably installed above between the two movable rails, a driving cylinder is installed on the rear side of the machine platform, a push rod of the driving cylinder is connected to the rear end of the placement rack, positioning structures are installed on the left and right sides of the placement rack, and the two positioning structures are symmetrically distributed, a workpiece is placed on the placement rack, and a plurality of positioning blocks are installed on the placement rack, the inward sides of the plurality of positioning blocks are respectively in contact with a plurality of side surfaces of the workpiece, the position distribution of the positioning blocks is the same as the shape of the workpiece, and the workpiece can be directly placed between the plurality of positioning blocks, thereby quickly placing and positioning the workpiece;

[0006] The position distribution of the pressure head is the same as the shape of the sealing shell on the workpiece. The pressure head can be pressed on various positions of the sealing shell cover, thereby increasing the contact strength between the sealing cover and the water channel opening on the component body, so that the sealing strip between the two is compressed and the sealing effect is improved;

[0007] The positioning structure includes side frames fixed on the left and right sides of the placement frame, the side frames are in an inverted L-shaped structure, and spring columns are fixed on the side frames, the lower ends of the spring columns are connected with positioning blocks, the positioning blocks are in sliding contact with the outward side surfaces of the side frames, and the positioning blocks are cut out of the surface of one side of the side frames to form a positioning notch, and two limit blocks are symmetrically fixed on the upper surface of the machine table. When the placement frame is at the rearmost end, the limit blocks coincide with the positioning notch, and the width and length of the limit blocks are the same as the width and length of the positioning notch, the lower rear half of the positioning block is cut out to form a contact inclined surface, and the upper front half of the limit block is cut out to form a lifting inclined surface, and the lifting inclined surface is in sliding contact with the contact inclined surface;

[0008] The machine platform is equipped with a pressing mechanism in an up-and-down lifting manner, a pressure plate is installed on the top of the pressing mechanism, and a pressure head for pressing the workpiece is provided below the pressure plate;

[0009] The downward pressing mechanism includes four circular holes opened above the machine platform, which are distributed in a rectangular shape, and guide sleeves are installed in the circular holes. A lifting rod is inserted in the guide sleeve for sliding up and down. The pressure plate is installed at the top of the four lifting rods, and the bottom ends of the four lifting rods are connected to a lifting plate. A hydraulic cylinder is installed under the machine platform, and the push rod of the hydraulic cylinder is connected to the lifting plate. Locking structures for limiting the lifting rods are installed on both the left and right sides above the machine platform.

[0010] Preferably, when the positioning block is at the lowermost end, the rearmost end of the contact slope of the positioning block is above the top of the limit block, and the placement rack is at the frontmost end under the action of the driving cylinder, a new workpiece can be removed or placed in the placement rack. At this time, when the placement rack and the positioning block are away from the limit block, the positioning block is at the lowermost end under the action of the spring column.

[0011] Preferably, the locking structure includes two fixed plates fixed on the upper surface of the machine platform, the two fixed plates are located on the sides of the two lifting rods on the same side, the fixed plates are formed with openings on the left and right sides, a sliding sleeve is fixed in the opening, a limit rod is inserted in the sliding sleeve for sliding left and right, a connecting plate is fixed between the two limit rods, a locking spring is sleeved on the limit rod, and the two ends of the locking spring are respectively in contact with the connecting plate and the fixed plate;

[0012] The lifting rod is formed with locking holes on the left and right sides. When the lifting rod is at the highest point, the axis of the locking hole is collinear with the limiting rod. At this time, when the limiting rod is not subjected to external forces other than the locking spring, the limiting rod will be inserted into the locking hole under the action of the locking spring, thereby limiting the lifting and lowering of the lifting rod.

[0013] Preferably, an unlocking block is fixed to the inwardly facing surface of the coupling plate, and an unlocking inclined surface is formed by cutting away a portion of the rear half of the outwardly facing surface of the positioning block. When the placement rack moves backward, the unlocking block will contact the unlocking inclined surface and push the coupling plate outward away from the positioning block. At this time, the limiting rod will also move outward and gradually disengage from the locking hole. When the placement rack is in the desired designated position, the limiting rod will completely disengage from the locking hole, and the lifting rod can now move freely up and down.

[0014] The thickness of the positioning block is greater than that of the unlocking block. The positioning block will contact the limit block and move upward during the backward movement. The thickness of the positioning block is thickened so that the outward surface of the positioning block can still slide in contact with the unlocking block during the upward movement, thereby facilitating the unlocking block to move outward.

[0015] Preferably, a through-hole is formed on the upper surface of the machine platform on both sides, and an unlocking rod is inserted into the through-hole for sliding up and down. The bottom end of the unlocking rod is connected to the lifting plate, and a rising inclined surface is formed by cutting off the upper front half of the unlocking rod. The structure and size of the rising inclined surface are consistent with those of the lifting inclined surface. The unlocking rod is located on the outward side of the limit block, and the width of the contact inclined surface is equal to the sum of the widths of the limit block and the unlocking rod.

[0016] When the placement rack is at the rear end and the pressure plate is at the highest point, the top of the unlocking rod contacts the lower surface of the positioning block, the positioning block is at the top, and the positioning notch is directly above the limit block.

[0017] Preferably, a compensation hole is provided on the lifting rod, and the compensation hole is located directly above the locking hole. When the limiting rod is placed inside the compensation hole, the pressure head below the pressure plate does not contact the upper surface of the workpiece.

[0018] When the pressure plate is at the highest point and the placement frame is at the rear end, the placement frame is not positioned at this time and can still move freely. If a fault occurs and causes the pressure plate and the placement frame to move at the same time, that is, the pressure plate moves down and the placement frame moves outward, when the placement frame moves outward, the positioning block will move away from the unlocking block, and the limit rod will move inward under the action of the locking spring and slide into contact with the outer surface of the lifting rod. When the pressure plate moves down to a certain extent, the limit rod will automatically be inserted into the compensation hole, thereby limiting the downward movement of the pressure plate, so that the pressure head will not press on the workpiece, thereby improving safety.

[0019] Beneficial effects of the present invention:

[0020] 1. By setting up a hydraulic system, a downward pressure mechanism, and a pressure plate, and combining them with a screw machine for automatic locking, a certain downward pressure is applied to the workpiece to be locked before locking. This solves the problems of locking requiring butt locking, repeated locking, rebound after locking, and uneven torque. The locking time is shortened by half, the torque qualification rate of a single locking meets the requirements, and the risk of leakage is eliminated.

[0021] 2. By combining the pressing mechanism with the horizontally movable placement rack and coordinating with the positioning structure, when the placement rack moves to the specified position, before the pressing mechanism presses the pressure plate, the positioning structure can position the placement rack, preventing the placement rack from moving during the pressing and locking process, avoiding damage to the workpiece caused by displacement and inaccurate locking, and improving the locking accuracy;

[0022] 3. By setting a locking structure in the pressing mechanism, and the locking structure cooperating with the placement rack and the positioning structure, the pressing mechanism can move downward to apply pressure only after the placement rack moves into place, and the placement rack cannot move during the pressing process. After the locking is completed, the pressure plate can only move when it is completely separated from the placement rack. This avoids the system error caused by the pressure plate pressing down when the workpiece is not under the pressure plate due to misalignment between the pressing system and the loading process, thereby improving stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic front and cross-sectional view of an automatic thread locking device for new energy vehicle parts proposed by the present invention;

[0024] Figure 2 for Figure 1 Schematic diagram of the internal structure of the locking device;

[0025] Figure 3 for Figure 2 Schematic diagram of the structure of the middle placement rack, pressure plate and downward pressing mechanism;

[0026] Figure 4 for Figure 3 Bottom view of

[0027] Figure 5 for Figure 3 A schematic diagram of the structure in which the middle placement rack is in a specified position;

[0028] Figure 6 for Figure 3 Schematic diagram of the structure of the middle placement rack, workpiece and positioning structure;

[0029] Figure 7 for Figure 6 Schematic diagram of the structure of the central positioning structure, the limit block and the unlocking lever;

[0030] Figure 8 for Figure 7 Schematic diagram of the back structure of the middle positioning structure;

[0031] Figure 9 for Figure 3 Structural diagram of the middle and lower pressure mechanism;

[0032] Figure 10 for Figure 9 Schematic diagram of the locking structure.

[0033] : Numbers in the figure: 1. Machine table; 2. Placement rack; 201. Positioning block; 21. Driving cylinder; 22. Moving rail; 23. Positioning structure; 231. Positioning block; 232. Side frame; 233. Spring column; 234. Unlocking slope; 235. Positioning notch; 236. Contact slope; 24. Limit block; 241. Lifting slope; 3. Three-axis slide; 4. Screw machine; 5. Pressing mechanism; 51. Lifting rod; 511. Guide sleeve; 512. Locking hole; 513. Compensating hole; 52. Locking structure; 521. Fixed plate; 522. Limiting rod; 523. Sliding sleeve; 524. Locking spring; 525. Connecting plate; 526. Unlocking block; 53. Hydraulic cylinder; 54. Lifting plate; 55. Unlocking rod; 551. Rising slope; 6. Pressure plate; 61. Pressure head; 7. Workpiece. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] Reference Figures 1-10 A threaded automatic locking device for new energy vehicle parts includes a machine platform 1, a three-axis slide 3 is suspended above the machine platform 1 by a bracket, a screw machine 4 is lifted and installed on the three-axis slide 3, and a visual module for observing screw holes and screw positions is installed on the side of the screw machine 4. Two movable rails 22 are symmetrically installed above the machine platform 1, and a placement rack 2 is slidably installed above the two movable rails 22. A driving cylinder 21 is installed on the upper rear side of the machine platform 1, and the push rod of the driving cylinder 21 is connected to the rear end of the placement rack 2. Positioning structures 23 are installed on both sides of the placement rack 2, and the two positioning structures 23 are symmetrically distributed. A workpiece 7 is placed on the placement rack 2;

[0036] The placement rack 2 is equipped with a plurality of positioning blocks 201. The inward sides of the plurality of positioning blocks 201 are in contact with the plurality of side surfaces of the workpiece 7 respectively. The position distribution of the positioning blocks 201 is the same as the shape of the workpiece 7. The workpiece 7 can be directly placed between the plurality of positioning blocks 201, thereby quickly placing and positioning the workpiece 7 to prevent it from shaking during movement. The workpiece 7 includes a component body and a sealing cover. The sealing cover is pressed onto the component body and fastened with screws.

[0037] The position distribution of the pressure head 61 is the same as the shape of the sealing shell on the workpiece 7. The pressure head 61 can be pressed at various positions of the sealing shell cover, thereby increasing the contact strength between the sealing cover and the water channel opening on the component body, so that the sealing strip between the two is compressed, thereby improving the sealing effect;

[0038] The positioning structure 23 includes side frames 232 fixed to the left and right sides above the placement frame 2. The side frames 232 are in an inverted L-shaped structure, and spring columns 233 are fixed to the side frames 232. The lower ends of the spring columns 233 are connected to positioning blocks 231. The positioning blocks 231 are in sliding contact with the outward surface of the side frames 232. The surface of the positioning blocks 231 facing the side frames 232 is cut away to form positioning notches 235. The spring columns 233 include a fixing sleeve. The fixing sleeve is slidably inserted with a sleeve rod, wherein the top end of the fixing sleeve is fixed to the side frames 232, and the bottom end of the sleeve rod is fixed to the positioning block 231. The fixing sleeve and the sleeve rod are externally sleeved with a spring, and the upper and lower ends of the spring are respectively in contact with the side frames 232 and the positioning block 231.

[0039] Two limit blocks 24 are fixed symmetrically on the upper surface of the machine 1. When the placement rack 2 is at the rearmost end, the limit block 24 coincides with the positioning notch 235, and the width and length of the limit block 24 are the same as the width and length of the positioning notch 235. The lower rear half of the positioning block 231 is cut away to form a contact inclined surface 236, and the upper front half of the limit block 24 is cut away to form a lifting inclined surface 241. The lifting inclined surface 241 is in sliding contact with the contact inclined surface 236.

[0040] The machine 1 is provided with a pressing mechanism 5 which is lifted and lowered. A pressure plate 6 is installed on the top of the pressing mechanism 5. A pressure head 61 for pressing the workpiece 7 is provided below the pressure plate 6. A plurality of slots are provided on the pressure plate 6. The inner diameter of the slots is larger than the outer diameter of the screws on the workpiece 7. The position distribution of the slots is consistent with the position distribution of the threaded holes on the workpiece 7. When the workpiece 7 is directly below the pressure plate 6, the plurality of threaded holes on the workpiece 7 are directly below the slots in a one-to-one correspondence.

[0041] The pressing mechanism 5 includes four circular holes opened above the machine platform 1. The four circular holes are distributed in a rectangular shape, and a guide sleeve 511 is installed in the circular hole. A lifting rod 51 is inserted in the guide sleeve 511 for sliding up and down. The pressure plate 6 is installed at the top of the four lifting rods 51. The bottom ends of the four lifting rods 51 are connected to a lifting plate 54. A hydraulic cylinder 53 is installed under the machine platform 1. The push rod of the hydraulic cylinder 53 is connected to the lifting plate 54. Locking structures 52 for limiting the lifting rod 51 are installed on both sides of the left and right sides above the machine platform 1.

[0042] Reference Figure 3-Figure 8 When the positioning block 231 is at the lowest end, the rear end of the contact slope 236 of the positioning block 231 is above the top of the limit block 24, and the placement rack 2 is at the front end under the action of the driving cylinder 21, and a new workpiece 7 can be removed or placed in the placement rack 2. At this time, when the placement rack 2 and the positioning block 231 are away from the limit block 24, the positioning block 231 is at the lowest end under the action of the spring column 233;

[0043] After the workpiece 7 is placed, the driving cylinder 21 pulls the placement rack 2 backward via the push rod, and the placement rack 2 and the positioning block 231 gradually approach the limit block 24. The contact slope 236 of the positioning block 231 contacts the lifting slope 241 of the limit block 24, and pushes the positioning block 231 upward along the lifting slope 241 and the side frame 232 until it moves to the top.

[0044] When the placement rack 2 is in the specified position, the limit block 24 is directly below the positioning notch 235. When the positioning block 231 is not subjected to any external force other than the spring column 233, the positioning block 231 will move downward under the action of the spring column 233, so that the limit block 24 is stuck in the positioning notch 235, which can position the placement rack 2 and prevent it from being offset in position, thereby improving the stability during subsequent locking.

[0045] Reference Figure 4-10 The locking structure 52 includes two fixed plates 521 fixed to the upper surface of the machine 1. The two fixed plates 521 are located on the sides of the two lifting rods 51 on the same side. Openings are formed on the left and right sides of the fixed plates 521. A sliding sleeve 523 is fixed in the opening. A limit rod 522 is inserted and slidably inserted in the sliding sleeve 523. A connecting plate 525 is fixed between the two limit rods 522. A locking spring 524 is sleeved on the limit rod 522. The two ends of the locking spring 524 are respectively in contact with the connecting plate 525 and the fixed plate 521.

[0046] The lifting rod 51 is formed with locking holes 512 on the left and right sides. When the lifting rod 51 is at the highest point, the axis of the locking hole 512 is collinear with the limiting rod 522. At this time, when the limiting rod 522 is not subjected to any external force except the locking spring 524, the limiting rod 522 will be inserted into the locking hole 512 under the action of the locking spring 524, thereby limiting the lifting and lowering of the lifting rod 51.

[0047] An unlocking block 526 is fixed to the inward surface of the connecting plate 525, and an unlocking inclined surface 234 is formed by cutting away the rear half of the outward surface of the positioning block 231. When the placement rack 2 moves backward, the unlocking block 526 will contact the unlocking inclined surface 234 and push the connecting plate 525 outward away from the positioning block 231. At this time, the limiting rod 522 will also move outward and gradually disengage from the locking hole 512. When the placement rack 2 is in the desired specified position, the limiting rod 522 will completely disengage from the locking hole 512, and the lifting rod 51 can now move freely up and down.

[0048] The thickness of the positioning block 231 is greater than that of the unlocking block 526. The positioning block 231 will contact the limit block 24 and move upward during the backward movement. The thickness of the positioning block 231 is designed to be thickened so that when the positioning block 231 moves upward, the outward surface of the positioning block 231 can still slide in contact with the unlocking block 526, thereby facilitating the unlocking block 526 to move outward.

[0049] Through-holes are formed on the left and right sides of the upper surface of the machine 1, and an unlocking rod 55 is inserted into the through-holes for sliding up and down. The bottom end of the unlocking rod 55 is connected to the lifting plate 54, and the upper front half of the unlocking rod 55 is cut away to form a rising inclined surface 551. The structure and size of the rising inclined surface 551 are consistent with those of the lifting inclined surface 241. The unlocking rod 55 is located on the outward side of the limit block 24, and the width of the contact inclined surface 236 is equal to the sum of the widths of the limit block 24 and the unlocking rod 55. The limit block 24 and the unlocking rod 55 can both contact the contact inclined surface 236 and cause the positioning block 231 to move upward.

[0050] When the placement rack 2 is at the rear end and the pressure plate 6 is at the highest point, the top of the unlocking rod 55 contacts the lower surface of the positioning block 231, the positioning block 231 is at the top, and the positioning notch 235 is directly above the limit block 24. At this time, the placement rack 2 can move freely, so that the placement rack 2 can move forward and remove the workpiece 7 above.

[0051] A compensation hole 513 is formed on the lifting rod 51, and the compensation hole 513 is located directly above the locking hole 512. When the limiting rod 522 is placed inside the compensation hole 513, the pressure head 61 below the pressure plate 6 does not contact the upper surface of the workpiece 7.

[0052] When the pressure plate 6 is at the highest point and the placement rack 2 is at the rear end, the placement rack 2 is not positioned at this time and the placement rack 2 can still move freely. If a fault occurs and causes the pressure plate 6 and the placement rack 2 to move at the same time, that is, the pressure plate 6 moves down and the placement rack 2 moves outward, when the placement rack 2 moves outward, the positioning block 231 will move away from the unlocking block 526, and the limit rod 522 will move inward under the action of the locking spring 524 and slide into contact with the outer surface of the lifting rod 51. When the pressure plate 6 moves down to a certain extent, the limit rod 522 will automatically be inserted into the compensation hole 513, thereby limiting the downward movement of the pressure plate 6, so that the pressure head 61 will not press on the workpiece 7, thereby improving safety.

[0053] Working principle: When it is necessary to screw and lock the component body in the workpiece 7 with the sealing cover, first extend the push rod of the driving cylinder 21 and make the placement rack 2 at the front end. Then, the component body can be placed between the multiple positioning blocks 201, and the sealing strip is clamped on the opening of the component body. The sealing cover is placed on the component. Then, the push rod of the driving cylinder 21 is retracted and the placement rack 2 is at the rear end specified position. At this time, the workpiece 7 is under the pressure plate 6, and the sealing cover is directly under the multiple pressure heads 61.

[0054] As the driving cylinder 21 pulls the placement rack 2 backward via the push rod, the placement rack 2 and the positioning block 231 gradually approach the limit block 24. When the positioning block 231 is not in contact with the limit block 24, the positioning block 231 is at the lowest end under the action of the spring column 233.

[0055] When the positioning block 231 contacts the limiting block 24, the contact slope 236 of the positioning block 231 contacts the lifting slope 241 of the limiting block 24, pushing the positioning block 231 upward along the lifting slope 241 and the side frame 232 until it reaches the top. During this process, the unlocking block 526 contacts the unlocking slope 234 and pushes the connecting plate 525 outward away from the positioning block 231. At this time, the limiting rod 522 also moves outward and gradually disengages from the locking hole 512.

[0056] When the placement rack 2 is at the designated position, the limit block 24 is located directly below the positioning notch 235, and the limit rod 522 is completely disengaged from the locking hole 512, so that the lifting rod 51 can move freely up and down.

[0057] After that, the push rod of the hydraulic cylinder 53 extends and causes the four lifting rods 51 to move downward synchronously. At this time, the unlocking rod 55 will also move downward together, and the positioning block 231 will move toward under the action of the spring column 233, so that the limit block 24 is engaged with the positioning block 231, so that the placement rack 2 cannot move, which makes the pressure head 61 unable to move during the process of pressing the workpiece 7 (a pressure sensor is provided in the pressure head 61 to detect the pressure on the workpiece 7 to prevent it from being too high or too low. Since the pressure of the pressure head 61 on the workpiece 7 is within a certain range, the two are not completely pressed to death, and the workpiece 7 may be The placement rack 2 will be displaced forward due to an error in the driving cylinder 21), the placement rack 2 cannot move, and at the same time, the workpiece 7 and the sealing cover on the placement rack 2 cannot move, ensuring that the pressure head 61 will not be damaged due to the misalignment of the workpiece 7 and the sealing cover, and the pressure plate 6 and the pressure head 61 will move downward together, so that the pressure head 61 can be pressed onto the sealing cover, ensuring the sealing performance between the sealing cover and the component body, and ensuring that the threaded hole on the sealing cover is aligned with the groove on the pressure plate 6, which is convenient for the subsequent accurate installation of the screws;

[0058] Afterwards, the screw machine 4 will grab the screw under the action of the visual module and the three-axis slide 3 and lock the sealing cover and the component body together with the thread.

[0059] After the thread locking is completed, the hydraulic cylinder 53 causes the lifting rod 51 to drive the pressure plate 6 and the pressure head 61 to move upward, and the unlocking rod 55 will also move upward. When the unlocking rod 55 moves upward to a certain extent, it will contact the positioning block 231 and push the positioning block 231 to move upward, so that the positioning block 231 is not locked with the limit block 24. When the pressure plate 6 is in the initial state, the limit block 24 is completely out of the positioning notch 235. At this time, the placement rack 2 can move forward, and the locked workpiece 7 can be removed from the placement rack 2 and a new workpiece 7 can be placed. This cycle can be repeated.

[0060] By providing a hydraulic system, a pressing mechanism 5, and a pressure plate 6, and combining them with a screw machine 4 for automatic locking, a certain downward pressure is applied to the workpiece 7 to be locked before locking, thereby solving the problems of locking requiring butt locking, repeated locking, rebound after locking, and uneven torque. The locking time is shortened by half, the torque qualification rate of one locking meets the requirements, and the risk of leakage is eliminated.

[0061] By combining the pressing mechanism 5 with the laterally movable placement rack 2 and cooperating with the positioning structure 23, when the placement rack 2 moves to the specified position, before the pressing mechanism 5 presses the pressure plate 6, the positioning structure 23 can position the placement rack 2, thereby preventing the placement rack 2 from moving during the pressing and locking process, thereby avoiding damage to the workpiece 7 due to displacement and inaccurate locking, ensuring that the threaded holes on the workpiece 7 and the sealing cover are aligned with the slots on the pressure plate 6, and improving the locking accuracy;

[0062] By arranging a locking structure 52 in the pressing mechanism 5, and the locking structure 52 cooperates with the placement rack 2 and the positioning structure 23, the pressing mechanism 5 can move downward to apply pressure only after the placement rack 2 moves into place, and the placement rack 2 cannot move during the pressing process. After the locking is completed, the placement rack 2 can only move after the pressure plate 6 is completely detached, thereby avoiding system errors caused by the pressure plate 6 pressing down when the workpiece 7 is not yet under the pressure plate 6 due to misalignment between the pressing system and the loading process, thereby improving stability.

[0063] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0064] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0065] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An automatic thread locking device for new energy vehicle parts, characterized in that: The invention comprises a machine (1), wherein a three-axis slide (3) is suspended above the machine (1) by a bracket, a screw machine (4) is installed on the three-axis slide (3) in a lifting manner, two movable rails (22) are symmetrically installed above the machine (1), a placement rack (2) is slidably installed above the two movable rails (22), a driving cylinder (21) is installed on the rear side above the machine (1), a push rod of the driving cylinder (21) is connected to the rear end of the placement rack (2), positioning structures (23) are installed on the left and right sides of the placement rack (2), and the two positioning structures (23) are symmetrically distributed, a workpiece (7) is placed on the placement rack (2), and a plurality of positioning blocks (201) are installed on the placement rack (2), the inner sides of the plurality of positioning blocks (201) are in contact with the plurality of side surfaces of the workpiece (7), and the position distribution of the positioning blocks (201) is the same as the shape of the workpiece (7); The positioning structure (23) includes side frames (232) fixed on the left and right sides above the placement frame (2), the side frames (232) are in an inverted L-shaped structure, and a spring column (233) is fixed on the side frames (232), the lower end of the spring column (233) is connected to a positioning block (231), the positioning block (231) is in sliding contact with the outward side surface of the side frame (232), and a positioning notch (235) is formed by cutting away a portion of the surface of the positioning block (231) facing the side frame (232). The machine (1) Two limit blocks (24) are fixed symmetrically on the upper end surface. When the placement rack (2) is at the rear end, the limit block (24) overlaps with the positioning notch (235), and the width and length of the limit block (24) are the same as the width and length of the positioning notch (235). A contact inclined surface (236) is formed by cutting off the lower rear half of the positioning block (231). A lifting inclined surface (241) is formed by cutting off the upper front half of the limit block (24). The lifting inclined surface (241) is in sliding contact with the contact inclined surface (236). The machine platform (1) is provided with a pressing mechanism (5) in an upward and downward lifting manner, a pressure plate (6) is provided on the top of the pressing mechanism (5), and a pressure head (61) for pressing the workpiece (7) is provided below the pressure plate (6); The pressing mechanism (5) includes four circular holes opened above the machine (1), the four circular holes are distributed in a rectangular shape, and guide sleeves (511) are installed in the circular holes. A lifting rod (51) is inserted into the guide sleeve (511) so as to slide up and down. The pressure plate (6) is installed at the top of the four lifting rods (51), and the bottom ends of the four lifting rods (51) are connected to a lifting plate (54). A hydraulic cylinder (53) is installed below the machine (1), and a push rod of the hydraulic cylinder (53) is connected to the lifting plate (54). Locking structures (52) for limiting the lifting rod (51) are installed on both the left and right sides above the machine (1).

2. The automatic thread locking device for new energy vehicle parts according to claim 1, characterized in that: When the positioning block (231) is at the lowest end, the rearmost end of the contact slope (236) of the positioning block (231) is above the top of the limiting block (24).

3. The automatic thread locking device for new energy vehicle parts according to claim 1, characterized in that: The locking structure (52) includes two fixed plates (521) fixed on the upper surface of the machine (1), the two fixed plates (521) are located on the side surfaces of the two lifting rods (51) on the same side, the fixed plates (521) are formed with openings on the left and right sides, a sliding sleeve (523) is fixed in the opening, a limit rod (522) is inserted and slidably inserted in the sliding sleeve (523), a connecting plate (525) is sleeved and fixed between the two limit rods (522), a locking spring (524) is sleeved on the limit rod (522), and two ends of the locking spring (524) are respectively in contact with the connecting plate (525) and the fixed plate (521); The lifting rod (51) is penetrated by locking holes (512) on the left and right sides. When the lifting rod (51) is at the highest point, the axis of the locking hole (512) is collinear with the limiting rod (522).

4. The automatic thread locking device for new energy vehicle parts according to claim 3, characterized in that: An unlocking block (526) is fixed to the inner surface of the coupling plate (525), and an unlocking inclined surface (234) is formed by cutting away the rear half of the outer surface of the positioning block (231); The thickness of the positioning block (231) is greater than the thickness of the unlocking block (526).

5. The automatic thread locking device for new energy vehicle parts according to claim 1, characterized in that: The upper surface of the machine (1) is provided with through-holes on both sides thereof, and an unlocking rod (55) is inserted and slidably connected to the through-holes. The bottom end of the unlocking rod (55) is connected to the lifting plate (54). The upper front half of the unlocking rod (55) is cut away to form a rising inclined surface (551). The structure and size of the rising inclined surface (551) are consistent with the structure and size of the lifting inclined surface (241). The unlocking rod (55) is located on the outward side of the limit block (24), and the width of the contact inclined surface (236) is equal to the sum of the widths of the limit block (24) and the unlocking rod (55).

6. The automatic thread locking device for new energy vehicle parts according to claim 3, characterized in that: A compensation hole (513) is provided on the lifting rod (51), and the compensation hole (513) is located directly above the locking hole (512). When the limiting rod (522) is placed inside the compensation hole (513), the pressure head (61) below the pressure plate (6) does not contact the upper surface of the workpiece (7).

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