Double screw centering device and automated production equipment

Abstract

The application discloses a double-end screw centering and deviation rectifying device and an automatic production equipment, wherein the double-end screw centering and deviation rectifying device comprises a mounting frame and two deviation rectifying mechanisms which are symmetrically arranged; each deviation rectifying mechanism comprises a screwing assembly and a jacking rod assembly, the screwing assembly is rotationally connected to the mounting frame, and the screwing assembly is provided with a through groove; the jacking rod assembly is mounted on the mounting frame and movably penetrates into the through groove; the jacking rod assembly is used for abutting against one end of the double-end screw; the screwing assembly is used for driving the nut of the double-end screw to rotate; wherein the two jacking rod assemblies extend out of the corresponding through grooves to clamp the screw end of the double-end screw, so that the two screwing assemblies drive the nut of the double-end screw to rotate. The technical scheme can fix the screw when adjusting the nut of the double-end screw, thereby realizing accurate adjustment of the position of the nut of the double-end screw, accurately adjusting the length of the screw protruding out of the nut, and making the double-end screw in a centered state.

Description

Technical Field

[0001] This invention relates to the field of automated production equipment technology, and in particular to a double-headed screw centering and correction device and automated production equipment. Background Technology

[0002] Double-ended screws are used in automated production lines in fields such as 3C, automobiles, new energy vehicles, photovoltaics, battery cells, and graphite boats. However, in the application of double-ended screws in graphite boats, they are prone to axial displacement during production. In this case, it is necessary to loosen or tighten the nuts at both ends of the double-ended screw to correct the screw's misalignment. However, the nuts often rotate along with the screw, causing the screw's axial position to be unstable. This makes it impossible for users to accurately adjust the length of the screw extending beyond the nut along the axial direction. Summary of the Invention

[0003] The main objective of this invention is to provide a centering and correction device for a double-ended screw and an automated production equipment. The device aims to fix the screw when adjusting the nut of the double-ended screw, thereby achieving precise adjustment of the nut position and allowing for precise adjustment of the length of the screw protruding from the nut, so that the double-ended screw is in a centered state.

[0004] To achieve the above objectives, the present invention proposes a double-headed screw centering and correction device, the double-headed screw centering and correction device comprising:

[0005] Mounting rack; and

[0006] Two alignment mechanisms are symmetrically arranged. Each alignment mechanism includes a tightening assembly and a push rod assembly. The tightening assembly is rotatably connected to the mounting frame and has a through slot. The push rod assembly is mounted on the mounting frame and movably passes through the through slot. The push rod assembly is used to abut against one end of the double-ended screw. The tightening assembly is used to drive the nut of the double-ended screw to rotate.

[0007] Two of the push rod assemblies extend from the corresponding through slots to clamp the screw ends of the double-ended screw, so that the two tightening assemblies drive the nut of the double-ended screw to rotate.

[0008] In one embodiment, each of the tightening components includes:

[0009] A drive motor, which is mounted on the mounting bracket and spaced apart from the push rod assembly; and

[0010] A screwdriver, rotatably connected to the mounting bracket, with one end of the screwdriver being drive-connected to the output shaft of the drive motor; the screwdriver is provided with the through slot.

[0011] In one embodiment, each of the tightening assemblies further includes a drive gear and a driven gear, the drive gear being sleeved on the output shaft of the drive motor, the driven gear being sleeved on one end of the screwdriver, and the drive gear and the driven gear being connected in a transmission manner; the drive motor and the end of the push rod assembly extending out of the through slot are spaced apart.

[0012] In one embodiment, the screwdriver includes:

[0013] The main shaft is rotatably connected to the mounting frame and is drive-connected to the drive motor.

[0014] A spring, one end of which is connected to the end of the main shaft away from the drive motor; and

[0015] A screwdriver bit, the screwdriver bit being connected to the other end of the spring, the screwdriver bit, the spring and the main shaft being coaxially arranged and forming the through groove; and the screwdriver bit having a snap-fit ​​position for limiting the nut of the double-ended screw, the opening of the through groove being located within the snap-fit ​​position.

[0016] In one embodiment, each of the push rod assemblies includes:

[0017] mandrel;

[0018] A drive cylinder, the drive cylinder being mounted on the mounting bracket and connected to one end of the push rod; and

[0019] A sliding bearing is installed on the wall of the through groove, and the end of the push rod away from the drive cylinder passes through the sliding bearing and is movably inserted through the through groove.

[0020] In one embodiment, the end of the push rod away from the drive cylinder is provided with a contact head, which is used to abut against the end of the double-ended screw.

[0021] In one embodiment, the contact head is an elastic contact head; or, the contact head includes a body and a protrusion provided on the body, the body being used to abut against the end of a double-ended screw, and the protrusion being used to insert into a slot of the double-ended screw.

[0022] In one embodiment, the push rod assembly further includes:

[0023] An anti-rotation plate, fixed to the mounting bracket and disposed adjacent to the push rod and the drive cylinder; the anti-rotation plate has an anti-rotation groove; the anti-rotation groove is an elongated oval groove and extends along the moving direction of the push rod; and

[0024] An anti-rotation pin is connected to the push rod near the drive cylinder and is movably inserted into the anti-rotation groove.

[0025] In one embodiment, the push rod assembly further includes a position offset sensor and a detection element. The position offset sensor is mounted on the mounting bracket and spaced apart from the push rod and the anti-rotation plate. The position offset sensor has a detection position. The detection element is connected to the push rod and spaced apart from the anti-rotation plate. The position offset sensor is used to detect the position of the detection element.

[0026] The present invention also proposes an automated production equipment, the automated production equipment comprising:

[0027] Base;

[0028] Graphite boat, the graphite boat being slidably connected to the base; and

[0029] As described above, the double-ended screw centering and correction device is mounted on the base, and the graphite boat is located between the two correction mechanisms of the double-ended screw centering and correction device.

[0030] The double-ended screw centering and correction device of the present invention includes a mounting frame and two correction mechanisms; the two correction mechanisms are symmetrically arranged; each correction mechanism includes a tightening assembly and a push rod assembly, the tightening assembly is rotatably connected to the mounting frame and has a through groove; the push rod assembly is mounted on the mounting frame and movably passes through the through groove; the push rod assembly is used to abut against one end of the double-ended screw; the tightening assembly is used to drive the nut of the double-ended screw to rotate; wherein, the two push rod assemblies extend from the corresponding through grooves to clamp the screw ends of the double-ended screw, so that... Two tightening components drive the nuts of the double-ended screw to rotate; first, the push rod components of the two correction mechanisms are controlled to move closer to the ends of the double-ended screw, so that the two push rod components clamp the two ends of the double-ended screw, making the screw in the double-ended screw fixed; then, the tightening components of the two correction mechanisms are controlled to drive the nuts at both ends of the double-ended screw to rotate. The screw that has been clamped will not rotate with the nut, thereby achieving precise adjustment of the position of the nut of the double-ended screw, so that the length of the screw protruding from the nut can be precisely adjusted, keeping the double-ended screw in a centered state. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of an embodiment of the automated production equipment of the present invention;

[0033] Figure 2 This is a schematic diagram of the structure of the double-headed screw centering and correction device of the present invention;

[0034] Figure 3 This is a schematic diagram of the correction mechanism of the double-headed screw centering and correction device of the present invention from one perspective.

[0035] Figure 4 This is a schematic diagram of the correction mechanism of the double-headed screw centering and correction device of the present invention from another perspective.

[0036] Figure 5 for Figure 4 A schematic diagram of the cross-section at point AA.

[0037] Explanation of icon numbers:

[0038] 1 Double-ended screw centering and correction device 221 mandrel 10 Mounting rack 221a Contact head 20 Corrective agencies 222 Drive cylinder 21 Tightening assembly 223 sliding bearings 21a Through slot 224 Anti-rotation plate 211 drive motor 224a Anti-rotation groove 212 screwdriver 225 Stop selling 212a Main axis 226 Position offset sensor 212b spring 227 Detection element 212c screwdriver bits 2 base 213 Driven gear 3 Graphite boat 22 push rod assembly

[0039] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0041] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0042] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0043] In existing applications of graphite boats, the double-ended screw is prone to axial displacement during production. In this case, it is necessary to loosen or tighten the nuts at both ends of the double-ended screw to correct the screw's deviation. However, the nuts often rotate along with the screw, which causes the screw's axial position to be unstable, making it impossible for the user to accurately adjust the screw's position axially.

[0044] To address the technical problem of users accurately adjusting the position of a double-ended screw, this invention proposes a double-ended screw centering and correction device.

[0045] In the embodiments of the present invention, please refer to Figures 1 to 5 The double-ended screw centering and correction device 1 includes a mounting frame 10 and two correction mechanisms 20. The two correction mechanisms 20 are symmetrically arranged. Each correction mechanism 20 includes a tightening assembly 21 and a push rod assembly 22. The tightening assembly 21 is rotatably connected to the mounting frame 10 and has a through groove 21a. The push rod assembly 22 is mounted on the mounting frame 10 and movably passes through the through groove 21a. The push rod assembly 22 is used to abut against one end of the double-ended screw. The tightening assembly 21 is used to drive the nut of the double-ended screw to rotate. The two push rod assemblies 22 extend from the corresponding through grooves 21a to clamp the screw end of the double-ended screw, so that the two tightening assemblies 21 drive the nut of the double-ended screw to rotate.

[0046] As a fixture in automated production equipment, the graphite boat 3 requires multiple double-ended screws to maintain its structural shape. During production, the graphite boat 3 is inevitably subjected to external impacts, causing axial displacement of these double-ended screws. Besides its application in graphite boats, double-ended screws have other applications, which will not be detailed here.

[0047] A fixture or device with a fixed double-ended screw is placed between the two correction mechanisms 20 of the double-ended screw centering and correction device 1. The double-ended screw centering and correction device 1 is movably connected to the base 2 of the automated production equipment. By driving the mounting bracket 10 to approach the double-ended screw to be corrected, the push rod assembly 22 and the tightening assembly 21 of the correction mechanism 20 of the double-ended screw centering and correction device 1 are in contact with the end of the double-ended screw.

[0048] When the double-ended screw deviates from its position on the fixture or equipment to be fixed, the push rod assemblies 22 of the two correction mechanisms 20 are first controlled to move closer to the ends of the double-ended screw, so that the two push rod assemblies 22 clamp the two ends of the double-ended screw, thus fixing the screw in the double-ended screw. Then, the tightening assemblies 21 of the two correction mechanisms 20 are controlled to drive the nuts at both ends of the double-ended screw to rotate. The screw that has been clamped will not rotate with the nuts, thereby achieving precise adjustment of the position of the nuts of the double-ended screw. This allows for precise adjustment of the length of the screw protruding from the nuts, keeping the double-ended screw in a centered state.

[0049] By providing a through groove 21a in the tightening assembly 21 and movably inserting the push rod assembly 22 through the through groove 21a in the tightening assembly 21, the push rod assembly 22 can clamp the two ends of the double-ended screw without affecting the rotation of the nut of the double-ended screw driven by the tightening assembly 21. This allows the tightening assembly 21 and the push rod assembly 22 to be combined into one unit, thereby making the structure of the correction mechanism 20 more compact.

[0050] After the nuts at both ends of the double-ended screw are tightened, the screw protrudes only about 1mm from the nuts. If the screw is offset 5mm to the left, the left end of the double-ended screw will protrude 6mm, while the right end of the screw will retract 4mm into the nut. Since the nut is only 5mm thick, the connection between the right end nut and the double-ended screw is only 1mm of thread, which is not allowed in production.

[0051] In one embodiment, each tightening assembly 21 includes a drive motor 211 and a screwdriver 212. The drive motor 211 is mounted on the mounting bracket 10 and spaced apart from the top rod assembly 22. The screwdriver 212 is rotatably connected to the mounting bracket 10, and one end of the screwdriver 212 is drively connected to the output shaft of the drive motor 211. The screwdriver 212 is provided with a through slot 21a.

[0052] Specifically, in this embodiment, the tightening assembly 21 uses a screwdriver 212. The screwdriver 212 is driven to rotate by the drive motor 211, so that the screwdriver 212 can automatically drive the nuts at both ends of the double-ended screw to rotate, making it easier for the nuts of the double-ended screw to be driven to be screwed in or out, thereby improving the working efficiency of the tightening assembly 21.

[0053] In one embodiment, please refer to Figures 1 to 5 Each tightening assembly 21 also includes a drive gear and a driven gear 213. The drive gear is sleeved on the output shaft of the drive motor 211, and the driven gear 213 is sleeved on one end of the screwdriver 212. The drive gear and the driven gear 213 are connected in a transmission manner. The drive motor 211 and the end of the push rod assembly 22 that extends out of the through groove 21a are spaced apart.

[0054] Specifically, the drive motor 211 is mounted on the mounting bracket 10 and located to the left or right of the screwdriver 212. The drive motor 211 is connected to the screwdriver 212 through two transmission components, such as the drive gear and the driven gear 213. The drive gear and the driven gear 213 are connected through a transmission belt. The drive motor 211 is not coaxial with the screwdriver 212, so that even if the drive motor 211 is set at a staggered position with the screwdriver 212, it will not block the movement of the push rod assembly 22 in the through slot 21a of the screwdriver 212. The drive motor 211 can still drive the screwdriver 212 to rotate, thereby making the structural arrangement of the double-headed screw centering and correction device 1 more reasonable.

[0055] In one embodiment, please refer to Figures 1 to 5 The screwdriver 212 includes a main shaft 212a, a spring 212b, and a screwdriver bit 212c. The main shaft 212a is rotatably connected to the mounting bracket 10 and is driven by the drive motor 211. One end of the spring 212b is connected to the end of the main shaft 212a away from the drive motor 211. The screwdriver bit 212c is connected to the other end of the spring 212b. The screwdriver bit 212c, the spring 212b, and the main shaft 212a are coaxially arranged and form a through groove 21a. The screwdriver bit 212c has a snap-fit ​​position, which is used to limit the nut of the double-ended screw. The opening of the through groove 21a is located in the snap-fit ​​position.

[0056] Specifically, by setting a spring 212b between the main shaft 212a and the screwdriver bit 212c of the screwdriver 212, the screwdriver bit 212c can make a tighter contact with the nut through the rebound force of the spring 212b after it comes into contact with the nut of the double-ended screw. This improves the tightness of the contact between the screwdriver 212 and the nut of the double-ended screw, making it easier for the screwdriver 212 to drive the nut to rotate.

[0057] The screwdriver bit 212c includes a body and two snap-fit ​​protrusions on the body. The two snap-fit ​​protrusions and the body enclose a snap-fit ​​position. The nut of the double-ended screw is snapped into the snap-fit ​​position. The position of the nut is limited by the two snap-fit ​​protrusions, so that the nut is not easy to disengage from the snap-fit ​​position, so that the screwdriver bit 212c can drive the nut to rotate.

[0058] Optionally, the outer walls of the two snap-fit ​​protrusions of the screwdriver bit 212c are provided with an elastic layer to increase the contact friction between the screwdriver bit 212c and the nut, making it easier for the screwdriver bit 212c to drive the nut to rotate.

[0059] In one embodiment, please refer to Figures 1 to 5 Each push rod assembly 22 includes a push rod 221, a drive cylinder 222, and a sliding bearing 223. The drive cylinder 222 is mounted on the mounting bracket 10 and connected to one end of the push rod 221. The sliding bearing 223 is mounted on the groove wall of the through groove 21a, and the end of the push rod 221 away from the drive cylinder 222 passes through the sliding bearing 223 and is movably passed through the through groove 21a.

[0060] Specifically, the drive cylinder 222 and the screwdriver 212 are positioned close to each other at the end adjacent to the drive motor 211, and the drive cylinder 222 and the screwdriver 212 are coaxially arranged. The sliding bearing 223 is located in the through groove 21a, and the push rod 221 passes through the sliding bearing 223. When the push rod 221 is driven by the drive cylinder 222 to slide in the through groove 21a, the outer screwdriver 212 does not slide with the push rod 221 through the sliding bearing 223. When the screwdriver 212 is driven to rotate by the drive motor 211, the inner push rod 221 can also rotate without rotating with the screwdriver 212 through the sliding bearing 223. In this way, the movements of the push rod 221 and the screwdriver 212 do not interfere with each other, thereby improving the coordination ability between the push rod 221 and the screwdriver 212, thus ensuring the normal operation of the double-ended screw centering and correction device 1.

[0061] In one embodiment, please refer to Figures 1 to 5 The end of the push rod 221 furthest from the drive cylinder 222 is provided with a contact head 221a, which is used to abut against the end of the double-ended screw. With this configuration, the push rod 221 can abut against the end of the double-ended screw more tightly through the contact head 221a, making it easier for the push rod assembly 22 to clamp both ends of the double-ended screw, ensuring that the double-ended screw centering and correction device 1 can properly adjust the position of the nut on the double-ended screw.

[0062] Optionally, the contact head 221a is an elastic contact head 221a; or, the contact head 221a includes a body and a protrusion provided on the body, the body being used to abut against the end of the double-ended screw, and the protrusion being used to insert into the slot of the double-ended screw.

[0063] Specifically, in one embodiment, the contact head 221a is made of an elastic material, giving it elasticity and allowing it to elastically abut against the end of the double-ended screw, thus making it easier for the push rod 221 to clamp the double-ended screw. In another embodiment, the contact head 221a is made of a rigid material, with a protrusion on its body and a corresponding groove on the double-ended screw. By engaging the protrusion of the contact head 221a with the groove of the double-ended screw, the contact between the push rod 221 and the end of the double-ended screw becomes tighter.

[0064] In one embodiment, please refer to Figures 1 to 5 The push rod assembly 22 also includes an anti-rotation plate 224 and an anti-rotation pin 225. The anti-rotation plate 224 is fixed to the mounting bracket 10 and is disposed near the push rod 221 and the drive cylinder 222. The anti-rotation plate 224 is provided with an anti-rotation groove 224a. The anti-rotation groove 224a is an elongated oval groove and extends along the moving direction of the push rod 221. The anti-rotation pin 225 is connected to the push rod 221 near the drive cylinder 222 and is movably inserted into the anti-rotation groove 224a.

[0065] Specifically, the anti-rotation plate 224 is fixed to the mounting bracket 10 by a fastener, and the anti-rotation plate 224 is arranged parallel to the push rod 221; one end of the anti-rotation pin 225 is connected to the push rod 221, and the other end of the anti-rotation pin 225 passes through the anti-rotation groove 224a; with this arrangement, if the push rod 221 is driven by the screwdriver 212 to rotate slightly, the push rod 221 can counteract the rotation tendency by the movement of the anti-rotation pin 225 in the anti-rotation groove 224a, thereby preventing the push rod 221 from rotating with the screwdriver 212, and ensuring that the movement between the push rod 221 and the screwdriver 212 will not interfere with each other.

[0066] In one embodiment, please refer to Figures 1 to 5 The push rod assembly 22 also includes a position offset sensor 226 and a detection element 227. The position offset sensor 226 is mounted on the mounting bracket 10 and is spaced apart from the push rod 221 and the anti-rotation plate 224. The position offset sensor 226 has a detection position. The detection element 227 is connected to the push rod 221 and is spaced apart from the anti-rotation plate 224. The position offset sensor 226 is used to detect the position of the detection element 227.

[0067] Specifically, the position offset sensor 226 is fixed to the mounting bracket 10 via a connector. The position offset sensor 226 has a detection position, and the detection element 227 is a metal plate. When the push rod 221 contacts the end of the double-ended screw, if the double-ended screw deviates to the left or right, the double-ended screw will push the push rod 221 to move synchronously. After the detection element 227 enters the detection position in the position offset sensor 226, the position offset sensor 226 will determine that the double-ended screw has deviated and adjustment work needs to be carried out. In this way, through the cooperation of the position offset sensor 226 and the detection element 227, the deviation of the double-ended screw can be accurately and timely detected, allowing the double-ended screw centering and correction device 1 to enter the adjustment process more quickly.

[0068] This invention also proposes an automated production equipment, which includes a base 2, a graphite boat 3, and a double-ended screw centering and correction device 1. The graphite boat 3 is slidably connected to the base 2. The double-ended screw centering and correction device 1 is installed on the base 2, and the graphite boat 3 is located between the two correction mechanisms 20 of the double-ended screw centering and correction device. The specific structure of the double-ended screw centering and correction device 1 is as described in the above embodiments. Since this automated production equipment adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0069] Specifically, the automated production equipment in this embodiment sets up a double-headed screw centering and correction device 1 on both sides of the graphite boat 3, so that the two correction mechanisms 20 of the double-headed screw centering and correction device 1 can adjust the position of the two ends of the double-headed screw of the graphite boat 3, thereby ensuring that the double-headed screw can always remain in a centered state on the graphite boat 3, avoiding affecting the structural shape of the graphite boat 3.

[0070] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A double-headed screw centering and correction device, characterized in that, The double-headed screw centering and correction device includes: Mounting rack; and Two alignment mechanisms are symmetrically arranged. Each alignment mechanism includes a tightening assembly and a push rod assembly. The tightening assembly is rotatably connected to the mounting frame and has a through slot. The push rod assembly is mounted on the mounting frame and movably passes through the through slot. The push rod assembly is used to abut against one end of the double-ended screw. The tightening assembly is used to drive the nut of the double-ended screw to rotate. Among them, the two push rod assemblies extend from the corresponding through slots to clamp the screw ends of the double-ended screw, so that the two tightening assemblies drive the nut of the double-ended screw to rotate; Each of the tightening components includes: A drive motor, which is mounted on the mounting bracket and spaced apart from the push rod assembly; and A screwdriver, rotatably connected to the mounting bracket, with one end of the screwdriver being drive-connected to the output shaft of the drive motor; the screwdriver is provided with the through slot. The screwdriver includes: The main shaft is rotatably connected to the mounting frame and is drive-connected to the drive motor. A spring, one end of which is connected to the end of the main shaft away from the drive motor; and A screwdriver bit, the screwdriver bit being connected to the other end of the spring, the screwdriver bit, the spring and the main shaft being coaxially arranged and forming the through groove; and the screwdriver bit having a snap-fit ​​position for limiting the nut of the double-ended screw, the opening of the through groove being located within the snap-fit ​​position.

2. The double-headed screw centering and correction device as described in claim 1, characterized in that, Each of the tightening components further includes a drive gear and a driven gear. The drive gear is sleeved on the output shaft of the drive motor, and the driven gear is sleeved on one end of the screwdriver. The drive gear and the driven gear are connected in a transmission manner. The drive motor and the end of the push rod assembly that extends out of the through slot are spaced apart.

3. The double-headed screw centering and correction device as described in claim 1, characterized in that, Each of the aforementioned push rod assemblies includes: mandrel; A drive cylinder, the drive cylinder being mounted on the mounting bracket and connected to one end of the push rod; and A sliding bearing is installed on the wall of the through groove, and the end of the push rod away from the drive cylinder passes through the sliding bearing and is movably inserted through the through groove.

4. The double-headed screw centering and correction device as described in claim 3, characterized in that, The end of the push rod away from the drive cylinder is provided with a contact head, which is used to abut against the end of the double-ended screw.

5. The double-headed screw centering and correction device as described in claim 4, characterized in that, The contact head is an elastic contact head; or, the contact head includes a body and a protrusion provided on the body, the body being used to abut against the end of the double-ended screw, and the protrusion being used to insert into the slot of the double-ended screw.

6. The double-headed screw centering and correction device as described in claim 4, characterized in that, The push rod assembly also includes: An anti-rotation plate, fixed to the mounting bracket and disposed adjacent to the push rod and the drive cylinder; the anti-rotation plate has an anti-rotation groove; the anti-rotation groove is an elongated oval groove and extends along the moving direction of the push rod; and An anti-rotation pin is connected to the push rod near the drive cylinder and is movably inserted into the anti-rotation groove.

7. The double-headed screw centering and correction device as described in claim 6, characterized in that, The push rod assembly further includes a position offset sensor and a detection element. The position offset sensor is mounted on the mounting bracket and spaced apart from the push rod and the anti-rotation plate. The position offset sensor has a detection position. The detection element is connected to the push rod and spaced apart from the anti-rotation plate. The position offset sensor is used to detect the position of the detection element.

8. An automated production equipment, characterized in that, The automated production equipment includes: Base; Graphite boat, the graphite boat being slidably connected to the base; and The double-ended screw centering and correction device as described in any one of claims 1 to 7, wherein the double-ended screw centering and correction device is installed on the base, and the graphite boat is located between the two correction mechanisms of the double-ended screw centering and correction device.

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