Automatic bit following mechanism for automatic hinge production line

Abstract

The utility model relates to the technical field of automation equipment, in particular to an automatic bit following mechanism for an automatic hinge production line, which comprises a turntable component and jig components distributed on the turntable component in an annular array, a rack is mounted on one side of the turntable component, and a transverse moving mechanism and a longitudinal moving mechanism are connected in the rack. The nail twisting device and the clamp device are installed on the longitudinal moving mechanism, and the longitudinal moving mechanism drives the nail twisting device and the clamp device to move longitudinally. A detection arm is connected to the lower portion of the rack and located at the tail of the hinge to be machined, and the transverse displacement of the hinge to be machined is detected. The utility model has the beneficial effects that the transverse moving mechanism and the longitudinal moving mechanism coordinate to adjust the positions of the nail twisting device and the clamp device according to the detected transverse displacement, so that the bit is always kept in a concentric state with the eccentric nail, the bit is accurately connected with the eccentric nail, the eccentric nail is rotationally adjusted, and the working efficiency is improved. And the screw tooth damage condition of the screwdriver head is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of automation equipment, in particular to a bit automatic following mechanism for an automatic hinge production line. Background Art

[0002] With the continuous improvement of the market's requirements for product functions and quality, hinges with multi-directional position adjustment functions have gradually become the industry mainstream. The three-dimensional adjustable hinge allows users to fine-tune the position of the door body and other parts after the hinge is installed, so as to achieve the best opening and closing effect and the alignment accuracy of the door gap.

[0003] Among them, during the assembly of the hinge in the automation equipment, the movable seat is not adjusted to the minimum state, so the overall length of the hinge is relatively long, which is not conducive to reducing the packaging volume. At the same time, in some high-end models, an inner groove consistent with the outer contour of the hinge is provided in the packaging box for easy placement and display of the hinge. Therefore, there are requirements for the external dimensions of the hinge to ensure product consistency. The hinge needs to be adjusted for consistency during factory preset. In the prior art, this adjustment process mainly relies on automation equipment to complete. The automation equipment rotates the eccentric nail in the hinge by using a bit, and drives the movable seat to displace relative to the fixed seat when the eccentric nail rotates, and pushes the movable seat to the minimum limit position so that the hinge reaches the factory standard setting.

[0004] In order to facilitate the assembly of hinge parts and the automatic adjustment of the eccentric nail, in the automation equipment, most of them adopt the assembly method of clamping and installing the fixed seat of the hinge in the fixture assembly, and then gradually installing the later components on the fixed seat. Therefore, when adjusting the eccentric nail, the eccentric nail not only needs to rotate, but also has a linear motion with a certain stroke.

[0005] However, in the existing eccentric nail adjustment structure, when the bit acts on the eccentric nail, the position of the eccentric nail will displace relative to the bit, resulting in the central axes of the bit and the eccentric nail not always being concentric. As a result, asymmetric torques and frictions are likely to occur during rotation. Such asymmetric torques and frictions not only increase the difficulty of adjustment, but also easily cause damage to the eccentric nail or the threaded end of the bit. Specifically, when the central axes of the bit and the eccentric nail are not concentric, the cutting edge of the bit cannot evenly embed into the notch end of the eccentric nail, resulting in local stress concentration at the notch, which in turn causes deformation, wear or even fracture of the thread or notch end, leading to certain quality hazards in the product before leaving the factory and increasing the rework and repair costs of the hinge. In the existing automation equipment, it is often impossible to compensate for the displacement of the eccentric nail and monitor it in real time, resulting in insufficient adjustment accuracy of the hinge and unable to meet the requirements of high-precision production. Summary of the Utility Model

[0006] The purpose of the present utility model is to overcome the drawbacks of the existing technology, and to provide a bit automatic following mechanism for a hinge automatic production line, which has a simple structure, low manufacturing cost, the bit automatically follows the displacement of the eccentric nail for adjustment, ensures that the bit and the eccentric nail are concentrically arranged, the adjustment process is fully automatic and intelligent, and improves the production efficiency.

[0007] The purpose of the present utility model is achieved in the following way: A bit automatic following mechanism for a hinge automatic production line, which includes a turntable assembly and a plurality of fixture assemblies annularly and arrayedly distributed thereon. The fixed seat of the hinge to be processed is clamped and installed in the fixture assembly. The processed hinge further includes a movable seat sleeved above the fixed seat. An eccentric nail is rotatably installed in the rivet hole at the top of the movable seat. When the eccentric nail rotates, it drives the movable seat to displace relative to the fixed seat:

[0008] The turntable assembly rotates to drive the hinge to be processed into the working range of the nail twisting device;

[0009] A machine frame is installed on one side of the turntable assembly. A transverse movement mechanism and a longitudinal movement mechanism are connected in the machine frame. The nail twisting device and the fixture device are installed on the longitudinal movement mechanism. The longitudinal movement mechanism drives the nail twisting device and the fixture device to move longitudinally, and the transverse movement mechanism drives the nail twisting device and the fixture device to move transversely, so as to realize the movement of the nail twisting device and the fixture device in the longitudinal direction and the transverse direction;

[0010] A detection device is connected below the machine frame. The detection device includes a detection arm. The detection arm is located at the tail of the movable seat and detects the lateral displacement amount of the movable seat;

[0011] The nail twisting device is connected with a bit. The bit sequentially passes through the fixture device, the detection device and is connected with the eccentric nail at the top of the movable seat.

[0012] Further: The transverse movement mechanism includes a transverse slide rail fixedly connected above the machine frame and a transverse slide block assembled with the transverse slide rail. A transverse driving cylinder drives the transverse slide block to slide along the transverse slide rail, so as to realize the movement of the nail twisting device and the fixture device in the transverse direction;

[0013] The transverse movement mechanism further includes a transverse connecting plate fixed on the transverse slide block. The longitudinal movement mechanism is installed on the transverse connecting plate.

[0014] Further: The longitudinal movement mechanism includes a longitudinal slide rail fixedly connected to one side of the transverse connecting plate and a longitudinal slide block assembled with the longitudinal slide rail. A longitudinal driving cylinder drives the longitudinal slide block to slide along the longitudinal slide rail, so as to realize the movement of the nail twisting device and the fixture device in the longitudinal direction;

[0015] The longitudinal moving mechanism further includes a longitudinal connecting plate located at the back of the longitudinal slide rail, and the longitudinal slide rail is mounted on the transverse connecting plate through the longitudinal connecting plate.

[0016] Furthermore: The screwing device includes a rotating motor, and the rotating motor is connected to the bit through a rotating shaft; the rotating motor drives the bit to rotate through the rotating shaft;

[0017] A screwing connection seat is connected to the outside of the rotating shaft, and the screwing connection seat is connected to the longitudinal slider.

[0018] Furthermore: The clamping device includes an outer clamping seat and an inner clamping seat which are distributed oppositely. A clamping groove is formed in the outer clamping seat in a hollow manner. When the inner clamping seat clamps with the outer clamping seat, the inner clamping seat extends into the clamping groove; a rotating hole is formed by surrounding at the intersection of the outer clamping seat and the inner clamping seat, and the bit is rotatably installed in the rotating hole.

[0019] Furthermore: The clamping device further includes two sliding seats which are symmetrically distributed, and the sliding seats are respectively connected to the inner ends of the outer clamping seat and the inner clamping seat;

[0020] The clamping device further includes a chute in which the sliding seats are assembled, and a clamping cylinder drives the two sliding seats to slide towards or away from each other in the chute; a clamping mounting seat is installed on the upper part of the clamping cylinder, and the clamping mounting seat is installed on the screwing connection seat.

[0021] Furthermore: The detection device includes a movable frame and a detection arm slidably connected therein. The detection arm is located at the tail of the movable seat; the movable frame is connected to the machine frame through an inner mounting plate;

[0022] A movable groove is formed in the movable frame in a concave manner, and a detection cylinder drives the detection arm to move towards the movable seat along the movable groove, so that the detection arm abuts against the tail of the movable seat; a grating rangefinder is connected to the side wall of the detection cylinder to detect the displacement of the detection arm pushed by the movable seat, so as to detect the lateral displacement amount of the movable seat.

[0023] Furthermore: The detection device further includes a mounting seat connected to the front end of the movable frame. A rotating cavity is provided through the bottom of the mounting seat, and a guide wheel is rotatably installed in the rotating cavity;

[0024] An outer mounting plate protrudes from the top of the movable frame. An adjustment groove is provided through the mounting seat, and a locking screw sequentially passes through the adjustment groove and is connected to the outer mounting plate; the adjustment groove is a vertically extending kidney-shaped groove.

[0025] Furthermore: The outer mounting plate is provided with a clearance groove, and the bit passes through the clearance groove and is connected to the hinge to be processed.

[0026] The beneficial effects of the present utility model are as follows: 1. The structure is simple, the manufacturing cost is low, and the market competitiveness is improved.

[0027] A detection device is provided to monitor the lateral displacement of the eccentric nail in real time, providing sufficient support for the synchronous movement of the bit, and the real-time adjustment mechanism eliminates the quality risks brought by asymmetric torque and friction, significantly improving the reliable stability of the adjustment process and the product quality.

[0028] The longitudinal movement mechanism and the lateral movement mechanism move in the longitudinal and lateral directions according to the feedback of the detection device, ensuring that the bit always maintains a concentric setting with the same axis as the eccentric nail.

[0029] The adjustment accuracy and consistency are improved, ensuring that the factory settings of each hinge meet the standard requirements, and the overall product quality is enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the working state of the bit and the hinge in the present utility model.

[0031] Figure 2 It is a schematic diagram of the state to be processed of the bit and the hinge in the present utility model.

[0032] Figure 3 It is an overall assembly effect diagram of the present utility model.

[0033] Figure 4 It is a schematic structural diagram of the automatic following mechanism for the hinge automatic production line in the present utility model.

[0034] Figure 5 It is an exploded view of the structure of the twist nail device and the detection device in the present utility model.

[0035] Figure 6 It is an exploded view of the structure of the detection device in the present utility model.

[0036] Figure 7 It is an exploded view of the structure of the lateral movement mechanism and the longitudinal movement mechanism in the present utility model.

[0037] Figure 8 It is an exploded view of the structure of the lateral movement mechanism in the present utility model.

[0038] Figure 9 It is an exploded view of the structure of the twist nail device and the rack in the present utility model.

[0039] Figure 10 It is an exploded view of the structure of the twist nail device and the fixture device in the present utility model.

[0040] Figure 11 It is a schematic structural diagram of the fixture device in the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0041] The following further specifically describes the present utility model in conjunction with the accompanying drawings. A bit automatic following mechanism for an automatic hinge production line includes a turntable assembly 10 and a number of fixture assemblies 11 annularly and arrayedly distributed thereon. The fixed seat 14 of the hinge 1 to be processed is clamped and installed in the fixture assembly 11. The processed hinge 1 further includes a movable seat 15 sleeved above the fixed seat 14. An eccentric pin 12 is rotatably installed in the rivet hole 16 at the top of the movable seat 15. When the eccentric pin 12 rotates, it drives the movable seat 15 to displace relative to the fixed seat 14:

[0042] The turntable assembly 10 rotates to drive the hinge 1 to be processed into the working range of the riveting device 4;

[0043] A machine frame 13 is installed on one side of the turntable assembly 10. A transverse movement mechanism 2 and a longitudinal movement mechanism 3 are connected in the machine frame 13. The riveting device 4 and the fixture device 5 are installed on the longitudinal movement mechanism 3. The longitudinal movement mechanism 3 drives the riveting device 4 and the fixture device 5 to move longitudinally. The transverse movement mechanism 2 drives the riveting device 4 and the fixture device 5 to move transversely, realizing the movement of the riveting device 4 and the fixture device 5 in the longitudinal and transverse directions;

[0044] A detection device is connected below the machine frame 13. The detection device includes a detection arm 62. The detection arm 62 is located at the tail of the movable seat 15 to detect the lateral displacement amount of the movable seat 15;

[0045] The riveting device 4 is connected with a bit 43. The bit 43 sequentially passes through the fixture device 5, the detection device and is connected with the eccentric pin 12 at the top of the movable seat 15.

[0046] As Figure 3 、 Figure 4 shown, this automatic production line is based on the rotation of the turntable assembly, and a number of fixture assemblies are annularly arrayed above the turntable assembly. By rotating the fixture assemblies, the hinges to be processed are sequentially brought into the working range of the riveting device.

[0047] As Figure 7 、 Figure 8As shown, in order to perform displacement compensation on the riveting device and the fixture device, a longitudinal movement mechanism and a transverse movement mechanism are provided to move the riveting device and the fixture device in the longitudinal and transverse directions, so as to realize the free positioning of the riveting device and the fixture device in the plane. During the movement of the riveting device in the longitudinal and transverse directions, the detection device is used to detect in real time the transverse displacement brought by the eccentric nail driving the movable seat. According to the displacement signal fed back by the detection device, the transverse movement mechanism and the longitudinal movement mechanism jointly coordinate to adjust the position of the riveting device and the fixture device according to the detected transverse displacement amount, so that the bit is always concentric with the eccentric nail, the bit can be accurately connected to the eccentric nail, and the eccentric nail is rotated and adjusted to avoid damage to the thread of the bit. During the above adjustment process, the turntable assembly automatically conveys and positions the hinges to be processed in sequence, and cooperates with the two-dimensional motion system of the longitudinal movement mechanism and the transverse movement mechanism to realize an efficient and continuous adjustment process.

[0048] Among them, the fixture device is installed on the longitudinal movement mechanism. When the transverse movement mechanism and the longitudinal movement mechanism drive the riveting device to move in the transverse and longitudinal directions, the fixture device follows the movement, and the fixture device always clamps the bit to ensure the stable operation of the bit.

[0049] In one embodiment: the transverse movement mechanism 2 includes a transverse slide rail 21 fixedly connected above the frame 13, and a transverse slider 22 assembled with the transverse slide rail. The transverse driving cylinder 23 drives the transverse slider 22 to slide along the transverse slide rail 21 to realize the movement of the riveting device 4 and the fixture device 5 in the transverse direction;

[0050] The transverse movement mechanism 2 further includes a transverse connecting plate 24 fixed on the transverse slider 22, and the longitudinal movement mechanism 3 is installed on the transverse connecting plate 24.

[0051] As Figure 8 shown, the transverse slide rail is used for motion guiding, and the transverse slider is used for motion operation. The two are slidably matched, and driven by the transverse driving cylinder, the transverse slider moves transversely along the transverse slide rail, so as to realize the movement of the riveting device and the fixture device in the transverse direction. The simple sliding structure of the transverse slide rail and the transverse slider ensures a stable and reliable sliding process, significantly reducing the influence of the vibration during the movement on the concentricity. The transverse driving cylinder provides efficient driving force to quickly adjust the riveting device and the fixture device, improving production efficiency.

[0052] Furthermore, a transverse connecting plate is provided to connect and install the longitudinal movement mechanism. During the movement of the transverse movement mechanism, it drives the longitudinal movement mechanism, the riveting device and the fixture device to move in the transverse direction together, so as to realize the precise positioning of the riveting device and the fixture device in the transverse direction.

[0053] In one embodiment, the longitudinal moving mechanism 3 includes a longitudinal slide rail 31 fixedly connected to one side of the transverse connecting plate 24, and a longitudinal slider 32 assembled with the longitudinal slide rail. The longitudinal driving cylinder 33 drives the longitudinal slider 32 to slide along the longitudinal slide rail 31, so as to realize the movement of the nail-twisting device 4 and the fixture device 5 in the longitudinal direction;

[0054] The longitudinal moving mechanism 3 further includes a longitudinal connecting plate 34 located at the back of the longitudinal slide rail 31. The longitudinal slide rail 31 is installed on the transverse connecting plate 24 through the longitudinal connecting plate 34.

[0055] As Figure 7 shown, the longitudinal slide rail is used for motion guiding, and the longitudinal slider is used for motion operation. The two are in sliding fit. Driven by the longitudinal driving cylinder, the longitudinal slider moves longitudinally along the longitudinal slide rail, so as to realize the movement of the nail-twisting device and the fixture device in the longitudinal direction. The simple sliding structure of the longitudinal slide rail and the longitudinal slider ensures the smooth and reliable sliding process, significantly reduces the influence of the vibration during the movement on the concentricity, and the longitudinal driving cylinder provides efficient driving force to quickly adjust the nail-twisting device and the fixture device, improving the production efficiency.

[0056] Furthermore, a longitudinal connecting plate is arranged to be connected and installed with the transverse connecting plate. The longitudinal connecting plate is clamped and screwed to the front end of the transverse connecting plate. The longitudinal moving mechanism and the transverse moving mechanism are connected by a simple screwing and fixing method, which not only enhances the structural stability, but also independently controls the longitudinal positions of the nail-twisting device and the fixture device through the longitudinal moving mechanism, meets the processing requirements of different hinges, and thus realizes the precise positioning of the nail-twisting device and the fixture device in the longitudinal direction.

[0057] In one embodiment, the nail-twisting device 4 includes a rotary motor 41, and the rotary motor 41 is connected to a bit 43 through a rotary shaft 42; the rotary motor 41 drives the bit 43 to rotate through the rotary shaft 42;

[0058] A nail-twisting connecting seat 44 is externally connected to the rotary shaft 42, and the nail-twisting connecting seat 44 is connected to the longitudinal slider 32.

[0059] As Figure 5 shown, the rotary motor serves as the rotary power source, and transmits the rotary torque to the bit through the rotary shaft. The bit rotates rapidly under the drive of the rotary motor, so that the rotary force directly acts on the eccentric nail of the hinge to be adjusted. Its structure is simple, which is convenient for users to control and maintain the rotation of the eccentric nail, improves the adjustment efficiency, ensures the uniform adjustment force of the bit on the eccentric nail, and realizes the precise rotary operation of the bit. Further, a nail-twisting connecting seat is externally connected to the rotary shaft, and the nail-twisting device is connected and installed with the longitudinal moving mechanism through the nail-twisting connecting seat.

[0060] In one embodiment: the fixture device 5 includes an outer clamp seat 51 and an inner clamp seat 52 which are distributed relatively, and the inner clamp seat 52 is clamped in a clamping groove 511 formed in the hollow of the outer clamp seat 51; a rotation hole 56 is formed by surrounding the intersection of the outer clamp seat 51 and the inner clamp seat 52, and the bit 43 is rotatably installed in the rotation hole 56.

[0061] As Figure 10 、 Figure 11 As shown, through the rotation hole formed by the mutual enclosure of the outer clamp seat and the inner clamp seat, the bit passes through the rotation hole and is clamped therein, and the bit can rotate freely in the rotation hole, which not only provides support and positioning for the bit, ensures that the bit remains stable at all times during the rotation adjustment process, reduces the offset during the rotation of the bit, but also accurately positions the bit to ensure the alignment consistency between the bit and the eccentric nail.

[0062] In one embodiment: the fixture device 5 further includes two sliding seats 53 which are symmetrically distributed, and the sliding seats 53 are respectively connected to the inner ends of the outer clamp seat 51 and the inner clamp seat 52;

[0063] The fixture device 5 further includes a sliding groove 54 equipped with the sliding seats 53, and the fixture cylinder 55 drives the two sliding seats 53 to slide towards or away from each other in the sliding groove 54; a fixture mounting seat 57 is installed on the upper part of the fixture cylinder 55, and the fixture mounting seat 57 is installed on the twist nail connecting seat 44.

[0064] In one embodiment: the detection device includes a movable frame 61 and a detection arm 62 slidably connected therein, and the detection arm 62 is located at the tail of the movable seat 15; the movable frame 61 is connected to the frame 13 through an inner mounting plate 63;

[0065] A movable groove 611 is formed by the depression of the movable frame 61, and the detection cylinder 64 drives the detection arm 62 to move towards the movable seat 15 along the movable groove 611, so that the detection arm 62 abuts against the tail of the movable seat 15; a grating rangefinder 65 is connected to the side wall of the detection cylinder 64 to detect the displacement of the detection arm 62 pushed by the movable seat 15, so as to detect the lateral displacement of the movable seat 15.

[0066] As Figure 6As shown in the figure, the detection arm is driven by a detection cylinder and can be slidably installed on the movable frame. The detection cylinder flexibly drives the detection arm to meet the detection requirements of different hinges. During detection, the detection cylinder pushes the detection arm towards the movable seat, causing it to press against the tail of the movable seat. Since the thrust of the detection cylinder is small, when the detection arm touches the movable seat, it stops moving. When the movable seat of the hinge to be processed undergoes a lateral displacement, the detection arm is pushed by the moving movable seat. The thrust of the movable seat is greater than the thrust of the detection cylinder, causing the detection arm to displace. At this time, the grating rangefinder monitors the position change of the detection arm in real time, indirectly calculates the displacement of the eccentric pin, and feeds back this lateral displacement to the main control system, providing a reliable basis for the synchronous movement of the bit head. When the movable seat reaches the set position, the nail-twisting device 4 stops moving.

[0067] In one embodiment: The detection device further includes a mounting seat 66 connected to the front end of the movable frame 61. A rotation cavity 661 is provided through the bottom of the mounting seat 66, and a guide wheel 7 is rotatably installed in the rotation cavity 661;

[0068] An outer mounting plate 67 protrudes from the top of the movable frame 61. An adjustment slot 662 is provided through the mounting seat 66, and a locking screw passes through the adjustment slot 662 and is connected to the outer mounting plate 67 in sequence; The adjustment slot 662 is a kidney-shaped slot extending vertically.

[0069] As Figure 6 shown, the detection device further includes a mounting seat. The guide wheel is rotatably installed on the mounting seat. During detection, the guide wheel presses against the top of the movable seat, playing an auxiliary positioning role for the hinge to prevent the hinge 1 to be processed from detaching from the fixture assembly 11 when the eccentric pin rotates.

[0070] Among them, the adjustment slot 662 is a kidney-shaped slot, allowing the position of the mounting seat to be finely adjusted to meet the processing requirements of different models of hinges.

[0071] In one embodiment: The outer mounting plate 67 is provided with a clearance slot 671, and the bit head 43 passes through the clearance slot 671 and is connected to the hinge 1 to be processed.

[0072] In this embodiment, a clearance slot is provided on the outer mounting plate, and the bit head passes through this clearance slot and is directly connected to the eccentric pin of the hinge to be processed, providing sufficient space for the movement of the bit head to ensure that it will not be interfered by the mounting plate when moving in the lateral and longitudinal directions, and at the same time facilitating the alignment and contact between the bit head and the eccentric pin.

[0073] Working principle: In this case, the detection arm of the detection device monitors in real time the lateral displacement of the movable seat of the hinge to be processed during the rotation of the eccentric pin, and feeds back the monitored data to the main control system in real time. The main control system precisely moves the bit of the screw-twisting device in the corresponding longitudinal and lateral directions through the longitudinal movement mechanism and the lateral movement mechanism, ensuring that the bit always maintains a coaxial concentric setting with the eccentric pin. The bit can always be adjusted following the displacement of the eccentric pin, avoiding problems such as screw thread damage and eccentric pin wear caused by non-concentricity of the eccentric pin in the traditional technology. The real-time adjustment mechanism eliminates the quality risks brought by asymmetric torque and friction, significantly improving the reliable stability of the adjustment process and the product quality. Further, the fixture device is simultaneously installed on the longitudinal movement mechanism, and the fixture device moves synchronously with the screw-twisting device to ensure that the bit is always in a clamped state, guaranteeing the stable operation of the bit.

[0074] Secondly, a high-precision grating rangefinder is used for measurement feedback to achieve high-precision positioning control in the lateral and longitudinal directions, improving the adjustment accuracy and adjustment consistency, ensuring that the factory settings of each hinge meet the standard requirements, and enhancing the overall product quality. During the above adjustment process, the turntable assembly and the fixture assembly cooperate with each other to realize the automatic conveying and positioning of the hinge. The adjustment process realizes fully automatic and intelligent operation, avoiding the pauses and errors caused by manual intervention during the adjustment process, meeting the production requirements of large-scale and high-efficiency in modern industry, and thus can be widely promoted and used.

[0075] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. An automatic following mechanism for the bit of a hinge automatic production line, which includes a turntable assembly (10) and a number of fixture assemblies (11) distributed in an annular array on it. The fixed seat (14) of the hinge (1) to be processed is clamped and installed in the fixture assembly (11). The processed hinge (1) further includes a movable seat (15) sleeved above the fixed seat (14). An eccentric pin (12) is rotatably installed in the rivet hole (16) at the top of the movable seat (15). When the eccentric pin (12) rotates, it drives the movable seat (15) to displace relative to the fixed seat (14): The turntable assembly (10) rotates to drive the hinge (1) to be processed into the working range of the riveting device (4). Its characteristics are as follows: A frame (13) is installed on one side of the turntable assembly (10). A transverse moving mechanism (2) and a longitudinal moving mechanism (3) are connected in the frame (13). The riveting device (4) and the fixture device (5) are installed on the longitudinal moving mechanism (3). The longitudinal moving mechanism (3) drives the riveting device (4) and the fixture device (5) to move longitudinally. The transverse moving mechanism (2) drives the riveting device (4) and the fixture device (5) to move transversely, realizing the movement of the riveting device (4) and the fixture device (5) in the longitudinal and transverse directions; A detection device is connected below the frame (13). The detection device includes a detection arm (62). The detection arm (62) is located at the tail of the movable seat (15) to detect the transverse displacement of the movable seat (15); The riveting device (4) is connected with a bit (43). The bit (43) passes through the fixture device (5), the detection device in sequence and is connected with the eccentric pin (12) at the top of the movable seat (15).

2. The automatic follower mechanism for the bit in the hinge automatic production line according to claim 1, characterized in that: The transverse moving mechanism (2) includes a transverse slide rail (21) fixedly connected above the frame (13) and a transverse slide block (22) assembled with the transverse slide rail. The transverse driving cylinder (23) drives the transverse slide block (22) to slide along the transverse slide rail (21), realizing the movement of the riveting device (4) and the fixture device (5) in the transverse direction; The transverse moving mechanism (2) further includes a transverse connecting plate (24) fixed on the transverse slide block (22). The longitudinal moving mechanism (3) is installed on the transverse connecting plate (24).

3. The automatic bit following mechanism for a hinge automatic production line according to claim 2, characterized in that: The longitudinal moving mechanism (3) includes a longitudinal slide rail (31) fixedly connected to one side of the transverse connecting plate (24) and a longitudinal slide block (32) assembled with the longitudinal slide rail. The longitudinal driving cylinder (33) drives the longitudinal slide block (32) to slide along the longitudinal slide rail (31), realizing the movement of the riveting device (4) and the fixture device (5) in the longitudinal direction; The longitudinal moving mechanism (3) further includes a longitudinal connecting plate (34) located at the back of the longitudinal slide rail (31). The longitudinal slide rail (31) is installed on the transverse connecting plate (24) through the longitudinal connecting plate (34).

4. The automatic bit following mechanism for an automatic hinge production line according to claim 3, characterized in that: The riveting device (4) includes a rotary motor (41). The rotary motor (41) is connected with the bit (43) through a rotating shaft (42). The rotary motor (41) drives the bit (43) to rotate through the rotating shaft (42); A torsion pin connection seat (44) is externally connected to the rotation shaft (42), and the torsion pin connection seat (44) is connected to the longitudinal slider (32).

5. An automatic following mechanism for the bit of an automatic hinge production line according to claim 1, characterized in that: The fixture device (5) includes an outer clamp seat (51) and an inner clamp seat (52) that are distributed oppositely. A clamping groove (511) is formed in the outer clamp seat (51) in a hollow manner. When the inner clamp seat (52) clamps with the outer clamp seat (51), the inner clamp seat (52) extends into the clamping groove (511). A rotation hole (56) is formed by surrounding the intersection of the outer clamp seat (51) and the inner clamp seat (52). The bit (43) is rotatably installed in the rotation hole (56).

6. The automatic bit following mechanism for a hinge automatic production line according to claim 5, characterized in that: The fixture device (5) further includes two sliding seats (53) that are symmetrically distributed. The sliding seats (53) are respectively connected to the inner ends of the outer clamp seat (51) and the inner clamp seat (52). The fixture device (5) further includes a sliding groove (54) equipped with the sliding seats (53). The fixture cylinder (55) drives the two sliding seats (53) to slide towards or away from each other in the sliding groove (54). A fixture mounting seat (57) is installed on the upper part of the fixture cylinder (55), and the fixture mounting seat (57) is installed on the torsion pin connection seat (44).

7. An automatic following mechanism for the bit of an automatic hinge production line according to claim 1, characterized in that: The detection device includes a movable frame (61) and a detection arm (62) slidably connected therein. The detection arm (62) is located at the tail of the movable seat (15). The movable frame (61) is connected to the frame (13) through an inner mounting plate (63). A movable groove (611) is formed by the depression of the movable frame (61). The detection cylinder (64) drives the detection arm (62) to move along the movable groove (611) towards the direction of the movable seat (15), so that the detection arm (62) abuts against the tail of the movable seat (15). A grating rangefinder (65) is connected to the side wall of the detection cylinder (64) to detect the displacement of the sliding of the detection arm (62) pushed by the movable seat (15), so as to detect the lateral displacement amount of the movable seat (15).

8. An automatic bit following mechanism for a hinge automatic production line according to claim 7, characterized in that: The detection device further includes a mounting seat (66) connected to the front end of the movable frame (61). A rotation cavity (661) is provided through the bottom of the mounting seat (66). The guide wheel (7) is rotatably installed in the rotation cavity (661). An outer mounting plate (67) protrudes from the top of the movable frame (61). An adjustment groove (662) is provided through the mounting seat (66). The locking screw sequentially passes through the adjustment groove (662) and is connected to the outer mounting plate (67). The adjustment groove (662) is a vertically extending kidney-shaped groove.

9. An automatic following mechanism for a bit in an automatic hinge production line according to claim 8, characterized in that: An avoidance groove (671) is provided on the outer mounting plate (67). The bit (43) passes through the avoidance groove (671) and is connected to the hinge to be processed (1).

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