Automatic riveting device for optical fiber connector terminal and using method of automatic riveting device

Abstract

The invention relates to the technical field of automatic riveting, in particular to an automatic riveting device for an optical fiber connector terminal and a using method thereof.The automatic riveting device comprises a supporting base, a lower die and a fixing rod, the lower die and the fixing rod are arranged on the supporting base, a workbench is arranged on the fixing rod, and a fixing plate is arranged on the workbench; the lifting assembly is arranged on the fixed plate, the lifting assembly comprises a movable plate, and an upper mold is arranged on the movable plate; the two-way driving mechanism is arranged on the workbench and connected with the lifting assembly, the movable plate is provided with a riveting traction mechanism connected with the two-way driving mechanism, the riveting traction mechanism comprises clamping plates which are symmetrically arranged, and the two-way driving mechanism can drive the upper die to abut against the lower die when the upper die abuts against the lower die. The riveting traction mechanism is used for controlling the clamping plate to perform riveting extrusion action on the connector, and the riveting strength is detected in a mode of providing traction force for the connector terminal after riveting is completed.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic riveting, and specifically to an automatic riveting device for fiber optic connector terminals and its usage method. Background Art

[0002] Optical fiber connectors usually consist of a ferrule, a connector body, an optical cable, and a connecting device, etc. During the assembly process, in order to ensure a firm connection between the connector and the optical cable and prevent the optical cable from loosening or falling off during use, the strengthening member or the internal protective sleeve of the optical cable is fixed to the connector body by riveting.

[0003] When riveting the connector body and the internal protective sleeve, pressure is usually applied and an internal support die is used in cooperation to cause them to undergo cooperative plastic deformation until they fit the surface of the internal support die.

[0004] During the riveting process, different specifications of connector bodies and internal protective sleeves require different pressures. Therefore, the pressure required for riveting can be adjusted by pneumatic or hydraulic means, etc., to ensure firm riveting. However, due to the continuous adjustment of the riveting pressure, the pressure reference will change continuously, and it is still possible that the riveting is not in place, resulting in inconsistent riveting strength. After riveting is completed, it is impossible to visually judge the defect of false riveting, which may lead to the problem that the optical fiber may cause the connector body and the internal protective sleeve to loosen due to external pulling during subsequent use. Summary of the Invention

[0005] The purpose of the present invention is to provide an automatic riveting device for fiber optic connector terminals and its usage method to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: An automatic riveting device for fiber optic connector terminals, comprising: A support base, a lower die and a fixed rod arranged on the support base, a workbench is arranged on the fixed rod, and a fixing plate is arranged on the workbench; It further comprises: A lifting assembly arranged on the fixing plate, an active plate is included in the lifting assembly, and an upper die is arranged on the active plate; A bidirectional driving mechanism arranged on the workbench and connected to the lifting assembly, a riveting pulling mechanism connected to the bidirectional driving mechanism is arranged on the active plate, the riveting pulling mechanism includes symmetrically arranged clamping plates, and the bidirectional driving mechanism can, when the upper die abuts against the lower die, control the clamping plates to perform a riveting extrusion action on the connector through the riveting pulling mechanism.

[0007] As a further solution of the present invention: The lifting assembly includes a first cylinder disposed on the fixed plate, a push plate is provided at the telescopic end of the first cylinder, a support column slidably connected to the movable plate is provided on the push plate, a fixing ring abutting against the movable plate is provided at the end of the support column, a first spring is sleeved on the support column, and two ends of the first spring respectively abut against the push plate and the movable plate.

[0008] As a further solution of the present invention: The bidirectional driving mechanism includes a support rod disposed on the workbench, a spiral groove is formed on the circumferential outer wall of the support rod, a rotating sleeve axially sliding along the support rod is rotatably installed on the push plate, and a first limiting block slidably engaged with the spiral groove is provided on the inner wall of the rotating sleeve.

[0009] As a further solution of the present invention: The bidirectional driving mechanism further includes a hollow rod axially sliding along the rotating sleeve and rotatably connected to the movable plate, and a rotating disk is provided on the hollow rod.

[0010] As a further solution of the present invention: The riveting and pulling mechanism includes guiding grooves symmetrically formed on the side wall of the rotating disk, symmetrically arranged sliding grooves are formed on the movable plate, sliding blocks are slidably installed in the sliding grooves, and limiting columns slidably engaged with the guiding grooves are provided on the side walls of the sliding blocks; It further includes a translation assembly provided on the sliding block for driving the clamping plate to move horizontally.

[0011] As a further solution of the present invention: The translation assembly includes a fixed sleeve provided on the sliding block, a movable rod is slidably installed in the fixed sleeve, and a guiding plate is provided at the end of the movable rod.

[0012] As a further solution of the present invention: The translation assembly further includes a support plate provided on the guiding plate, a guiding rod and a second cylinder are provided on the support plate, a movable sleeve is slidably installed on the guiding rod, and the movable sleeve and the second cylinder are fixedly connected to the clamping plate.

[0013] As a further solution of the present invention: A guiding column is provided on the sliding block, a second spring is sleeved on the guiding column, and two ends of the second spring respectively abut against the guiding plate and the guiding column.

[0014] As a further solution of the present invention: A second cylinder is provided on the guiding plate, a limiting plate fixedly connected to the movable rod and axially slidable along the guiding column is provided at the telescopic end of the second cylinder, and the limiting plate abuts against the fixed sleeve.

[0015] A usage method of an automatic riveting device for optical fiber connector terminals includes the following steps: Step 1: Place the connector components to be riveted on the lower die. Step 2: Under the action of the lifting assembly, drive the upper die to move towards the lower die through the movable plate, and under the action of the lifting assembly, control the movement of the bidirectional drive mechanism. Step 3: When the upper die abuts against the lower die, the position of the movable plate no longer changes. Under the action of the bidirectional drive mechanism, control the movement of the riveting and pulling mechanism to control the clamping plate to perform the riveting action on the connector components. Step 4: After riveting is completed, the lifting assembly controls the upper die to reset. Under the action of the clamping plate, provide a simulated pulling force to the connector components to detect the riveting result.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This application can automatically apply a simulated pulling force to the riveted product after riveting to test the riveting strength, ensuring firm riveting between the connector housing and the internal protective sleeve. Specifically, through the lifting assembly, the upper die and the lower die can be controlled to cooperate with each other to form an internal support die for riveting. Through the bidirectional drive mechanism, the movement of the riveting and pulling mechanism can be controlled. When the upper die abuts against the lower die, control the two clamping plates to move towards each other to perform the riveting action on the connector housing and the internal protective sleeve, ensuring that the connector housing and the internal protective sleeve produce coordinated plastic deformation until their contours are fully surface - fitted with the upper die and the lower die. During the reset process of the lifting assembly, through the cooperation of the bidirectional drive mechanism and the riveting and pulling mechanism, an axial pulling force is provided to the connector housing to test the riveting strength.

[0017] Through the telescopic action of the first cylinder, the mutual riveting of the connector housing and the internal protective sleeve can be achieved, and after riveting is completed, the riveting strength test is automatically performed, thus simplifying the subsequent required test steps and optimizing the entire riveting process. Through the cooperation of the guide groove and the limit post, when the upper die abuts against the lower die, the movement of the clamping plate towards each other can be controlled to perform the riveting action on the connector housing and the internal protective sleeve. After riveting is completed, the distance between the two clamping plates can be controlled to remain unchanged, so that during the reset process of the upper die, a pulling force is applied to the connector housing through the clamping plate, effectively identifying the defect of false riveting, and after the detection is completed, the clamping plate is automatically controlled to separate from the connector housing to avoid damage to qualified parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of an embodiment of an automatic riveting device for fiber - optic connector terminals.

[0019] Figure 2Schematic diagram of the structure of an automatic riveting device for fiber optic connector terminals from another angle in an embodiment.

[0020] Figure 3 It is Figure 2 Enlarged schematic diagram of the structure at position A in

[0021] Figure 4 Schematic diagram of the connection relationship of the lifting assembly, part of the bidirectional driving mechanism, and part of the riveting and pulling mechanism in an embodiment of an automatic riveting device for fiber optic connector terminals.

[0022] Figure 5 It is Figure 4 Schematic diagram of the structure from another angle.

[0023] Figure 6 Partial half-sectional schematic diagram in an embodiment of an automatic riveting device for fiber optic connector terminals.

[0024] Figure 7 Schematic diagram of the structure of the riveting and pulling mechanism in an embodiment of an automatic riveting device for fiber optic connector terminals.

[0025] Figure 8 Exploded schematic diagram of part of the lifting assembly and part of the bidirectional driving mechanism in an embodiment of an automatic riveting device for fiber optic connector terminals.

[0026] Figure 9 Schematic diagram of the structure of the rotating disk and the riveting and pulling mechanism in an embodiment of an automatic riveting device for fiber optic connector terminals.

[0027] Figure 10 It is Figure 9 Enlarged schematic diagram of the structure at position B in

[0028] Figure 11 Exploded schematic diagram of the riveting and pulling mechanism in an embodiment of an automatic riveting device for fiber optic connector terminals.

[0029] In the figure: 1, support base; 2, lower die; 3, fixed rod; 4, workbench; 5, fixed plate; 6, support rod; 601, spiral groove; 7, first cylinder; 8, push plate; 9, support column; 10, movable plate; 1001, chute; 11, first spring; 12, rotating sleeve; 1201, straight groove; 13, first limit block; 14, hollow rod; 15, second limit block; 16, rotating disc; 1601, first annular groove; 1602, first inclined groove; 1603, second annular groove; 1604, second inclined groove; 17, upper die; 18, sliding block; 19, limit post; 20, fixed sleeve; 21, movable rod; 22, guide plate; 23, support plate; 24, guide rod; 25, movable sleeve; 26, clamping plate; 27, second cylinder; 28, third cylinder; 29, limit plate; 30, guide post; 31, second spring. Detailed implementation manner

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] In addition, an element in the present invention is referred to as being "fixed to" or "disposed on" another element, and it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manner.

[0032] Please refer to Figures 1 to 11 , in the embodiment of the present invention, an automatic riveting device for an optical fiber connector terminal includes: A support base 1, a lower die 2 and a fixed rod 3 provided on the support base 1, a workbench 4 provided on the fixed rod 3, and a fixed plate 5 provided on the workbench 4; It further includes: A lifting assembly provided on the fixed plate 5, the lifting assembly includes a movable plate 10, and an upper die 17 is provided on the movable plate 10; A bidirectional driving mechanism is provided on the workbench 4 and is connected to the lifting assembly. A riveting and pulling mechanism connected to the bidirectional driving mechanism is provided on the movable plate 10. The riveting and pulling mechanism includes clamping plates 26 arranged symmetrically. When the upper die 17 abuts against the lower die 2, the bidirectional driving mechanism can control the clamping plates 26 to perform a riveting and squeezing action on the connector through the riveting and pulling mechanism.

[0033] Specifically, when riveting the connector terminals, usually the connector housing and the internal protective sleeve are riveted to each other. The inner wall size of the internal protective sleeve is equivalent to the rectangular columnar size formed by the combination of the upper die 17 and the lower die 2. Before riveting, the connector housing is also arranged in a rectangular columnar shape and can be sleeved on the internal protective sleeve. Therefore, after the two are sleeved together, they can be placed on the lower die 2, and the internal protective sleeve is fixed by a pneumatic fixture (not shown in the figure). At this time, under the action of the lifting assembly, the upper die 17 is controlled by the movable plate 10 to move towards the lower die 2. At the same time, the lifting assembly also drives the bidirectional driving mechanism to move. When the upper die 17 is inserted into the internal protective sleeve and abuts against the lower die 2, the movable plate 10 stops moving. At this time, the lifting assembly continues to control the bidirectional driving mechanism to move, thereby driving the riveting and pulling mechanism to move, so that the two clamping plates 26 move towards each other. When the clamping plates 26 abut against the connector housing, under the action of the extrusion force of the clamping plates 26, the connector housing and the internal protective sleeve are indented and deformed inward until they are fully fitted with the upper die 17 and the lower die 2. When the riveting is completed, under the action of the lifting assembly, the upper die 17 is controlled by the movable plate 10 to reset. At the same time, under the action of the bidirectional driving mechanism, the clamping plates 26 are controlled by the riveting and pulling mechanism to always be in a fitting state with the connector housing to provide a certain pulling force to the connector housing, thereby testing the riveting strength of the connector housing and the internal protective sleeve. When the pulling force reaches a certain value, it indicates that the riveting strength meets the required requirements. Under the action of the bidirectional driving mechanism, the two clamping plates 26 are controlled by the riveting and pulling mechanism to move away from each other until the clamping plates 26 are reset. Among them, the pneumatic fixture is arranged on the same horizontal plane as the lower die 2 and is used to provide the lateral clamping effect of the internal protective sleeve to ensure that the internal protective sleeve always remains fixed when the connector housing is subjected to the pulling force.

[0034] Preferably, by providing a pulling force after riveting, it is possible to timely detect whether the riveting strength of the connector housing and the internal protective sleeve meets the required requirements. At the same time, after the riveting strength test meets the required requirements, the clamping plates 26 are automatically controlled to separate from the connector housing, which can not only prevent the problem of deformation and separation due to external pulling during subsequent use due to too low riveting strength, but also ensure that the connector housing will not be damaged due to excessive pulling force.

[0035] Please refer toFigure 1 , Figure 2 , Figures 4 to 6 , the lifting assembly includes a first cylinder 7 provided on the fixed plate 5. A push plate 8 is provided at the telescopic end of the first cylinder 7. A support column 9 slidably connected to the movable plate 10 is provided on the push plate 8. A fixed ring abutting against the movable plate 10 is provided at the end of the support column 9. A first spring 11 is sleeved on the support column 9, and two ends of the first spring 11 respectively abut against the push plate 8 and the movable plate 10.

[0036] Specifically, before riveting, the first spring 11 is in a compressed state, so that the distance between the movable plate 10 and the push plate 8 is the largest, and the movable plate 10 and the fixed ring are in an abutting state. Under the action of the first cylinder 7, the push plate 8 and the movable plate 10 are controlled to be at the end of the stroke in the direction away from the lower die 2. At this time, the upper die 17 and the lower die 2 are in a separated state. When it is necessary to rivet the connector housing and the internal protective sleeve, the first cylinder 7 works and drives the push plate 8 to move towards the lower die 2, so as to control the synchronous movement of the movable plate 10 through the support column 9, so that the upper die 17 moves towards the lower die 2. When the upper die 17 abuts against the lower die 2, the upper die 17 and the lower die 2 are combined with each other to form an internal support die required for riveting, so as to ensure that the subsequent riveting can be carried out smoothly.

[0037] Please refer to Figure 1 , Figure 2 , Figures 4 to 6 , Figures 8 to 10 , the bidirectional driving mechanism includes a support rod 6 provided on the workbench 4. A spiral groove 601 is formed on the circumferential outer wall of the support rod 6. A rotating sleeve 12 sliding axially along the support rod 6 is rotatably installed on the push plate 8. A first limiting block 13 slidably fitted with the spiral groove 601 is provided on the inner wall of the rotating sleeve 12. The bidirectional driving mechanism further includes a hollow rod 14 sliding axially along the rotating sleeve 12 and rotatably connected to the movable plate 10. A rotating disc 16 is provided on the hollow rod 14.

[0038] Please refer to Figures 1 to 7 , Figure 9 , Figure 11, the riveting and pulling mechanism includes guiding grooves formed on the side wall of the rotating disk 16 and symmetrically arranged. Sliding grooves 1001 are symmetrically arranged on the movable plate 10. Sliding blocks 18 are slidably installed in the sliding grooves 1001. A limiting column 19 that is slidably fitted with the guiding grooves is arranged on the side wall of the sliding block 18. It further includes a translation assembly arranged on the sliding block 18 and used for driving the clamping plate 26 to move horizontally. The translation assembly includes a fixed sleeve 20 arranged on the sliding block 18. A movable rod 21 is slidably installed in the fixed sleeve 20. A guiding plate 22 is arranged at the end of the movable rod 21. The translation assembly further includes a supporting plate 23 arranged on the guiding plate 22. A guiding rod 24 and a second air cylinder 27 are arranged on the supporting plate 23. A movable sleeve 25 is slidably installed on the guiding rod 24. The movable sleeve 25 and the second air cylinder 27 are fixedly connected to the clamping plate 26.

[0039] A guiding column 30 is arranged on the sliding block 18. A second spring 31 is sleeved on the guiding column 30. Two ends of the second spring 31 are respectively abutted against the guiding plate 22 and the guiding column 30. A second air cylinder 27 is arranged on the guiding plate 22. A limiting plate 29 that is fixedly connected to the movable rod 21 and can axially slide along the guiding column 30 is arranged at the telescopic end of the second air cylinder 27. The limiting plate 29 is abutted against the fixed sleeve 20.

[0040] Please refer to Figure 9 , Figure 10, It should be noted that the guiding groove can be divided into four sections, namely the first annular groove 1601, the first inclined groove 1602, the second annular groove 1603, and the second inclined groove 1604. The first annular groove 1601 and the second annular groove 1603 are arranged in an arc shape, and the center of the arc is on the same axis as the rotation center of the rotating disk 16. One end of the first inclined groove 1602 is connected to one end of the first annular groove 1601, and the other end is connected to the second annular groove 1603. One end of the second inclined groove 1604 is connected to one end of the second annular groove 1603, and the other end is connected to the first annular groove 1601. A straight groove 1201 is formed along the axial direction of the rotating sleeve 12, and a second limiting block 15 that is slidably engaged with the straight groove 1201 is arranged on the inner wall of the hollow rod 14. In the initial state, under the action of the first cylinder 7, the push plate 8 and the rotating sleeve 12 are located at the end of the stroke in the direction away from the lower die 2, and under the action of the first spring 11, the distance between the movable plate 10 and the push plate 8 is the largest. Therefore, the first limiting block 13 is located at the end of the stroke on the side of the spiral groove 601 away from the lower die 2, the second limiting block 15 is located at the end of the stroke on the side of the straight groove 1201 facing the lower die 2, the limiting column 19 is located at the end of the stroke on the side of the first annular groove 1601 away from the first inclined groove 1602, so that the distance between the two sliding blocks 18 is the largest, so that the two clamping plates 26 are located at the end of the stroke in the direction away from each other, and the second spring 31 is in a compressed state, so as to control the movable rod 21 to be located at the end of the stroke inserted into the fixed sleeve 20 through the guide plate 22, so that the distance between the clamping plate 26 and the sliding block 18 is the smallest.

[0041] Among them, before riveting, the second cylinder 27 can be controlled to work according to the required riveting pressure to adjust the distance between the clamping plate 26 and the support plate 23 to ensure that the riveting pressure applied by the clamping plate 26 meets the requirements. If the sizes of the connector housing and the internal protective sleeve change, the riveting strength needs to be changed, and the specifications of the corresponding upper die 17 and lower die 2 also need to be changed, and the position where the clamping plate 26 needs to apply pressure also needs to be changed. Therefore, when the sizes of the connector housing and the internal protective sleeve increase, the required riveting strength increases, and the specifications of the corresponding upper die 17 and lower die 2 also increase, and the required distance between the clamping plate 26 and the sliding block 18 increases. Under the action of the third cylinder 28, the limiting plate 29 is pushed to move. Since the limiting plate 29 abuts against the fixed sleeve 20, the third cylinder 28 will drive the guide plate 22 to move to control the movable rod 21 to move in a direction away from the fixed sleeve 20 and compress the second spring 31. The increase in the compression amount of the second spring 31 indicates that when testing the riveting strength, the pulling force that can be provided to the clamping plate 26 increases, so as to adjust the position of the pressure applied by the clamping plate 26 according to the sizes of the connector housing and the internal protective sleeve, and adaptively adjust the magnitude of the pulling force provided by the clamping plate 26 during the riveting strength test after riveting is completed.

[0042] When it is necessary to rivet the connector shell and the internal protective sleeve, under the action of the first cylinder 7, the push plate 8 and the rotating sleeve 12 are controlled to move along the axial direction of the support rod 6 and move toward the lower mold 2. Under the action of the first spring 11, the movable plate 10 moves synchronously with the push plate 8. The rotating sleeve 12 will also drive the first limit block 13 to move. Under the action of the first limit block 13 and the spiral groove 601, the rotating sleeve 12 rotates, thereby controlling the rotation of the hollow rod 14 through the straight groove 1201 and the second limit block 15 to control the rotation of the rotating disk 16. The rotating disk 16 will also drive the guide groove to move.

[0043] Subsequently, under the action of the guide groove, the limiting column 19 moves relative to the rotating disk 16 and slides along the first annular groove 1601. Since the sliding block 18 is not subjected to horizontal force, when the limiting column 19 moves to the connection position between the first annular groove 1601 and the second inclined groove 1604, the limiting column 19 will not separate from the first annular groove 1601 and enter the second inclined groove 1604. As the rotating disk 16 continues to rotate, the limiting column 19 will cross the second inclined groove 1604 and continue to slide along the first annular groove 1601. When the upper mold 17 moves to the abutment position with the lower mold 2, the position of the movable plate 10 no longer changes. During this process, since the limiting column 19 always slides along the first annular groove 1601, the position of the sliding block 18 will not change, ensuring that the distance between the two clamping plates 26 remains unchanged.

[0044] At this time, the push plate 8 continues to move toward the lower mold 2 and compresses the first spring 11. The push plate 8 also drives the rotating sleeve 12 to continue to move, so that the size of the mutual fit between the hollow rod 14 and the rotating sleeve 12 increases, and under the action of the first limit block 13 and the spiral groove 601, the rotating sleeve 12 continues to rotate, so as to drive the rotating disk 16 to continue to rotate through the hollow rod 14, so that the limit column 19 continues to slide along the first annular groove 1601. When the limit column 19 moves to the connection position between the first annular groove 1601 and the first inclined groove 1602, the limit column 19 will disengage from the first annular groove 1601 and enter the first inclined groove 1602, so that the two sliding blocks 18 move in a direction close to each other, and the sliding block 18 will also drive the fixed sleeve 20 and the movable rod 2 1 moves to drive the guide plate 22 and the support plate 23. Under the action of the support plate 23, the two clamping plates 26 are controlled by the second cylinder 27 to move toward each other. When the clamping plate 26 abuts against the connector housing, the connector housing and the internal protective sleeve are caused to produce cooperative plastic deformation by gradually applying contact pressure until their contours are fully fitted with the upper mold 17 and the lower mold 2. The limiting column 19 just leaves the first inclined groove 1602 and enters the second annular groove 1603. The spacing between the two clamping plates 26 is minimized. The limiting column 19 continues to slide in the second annular groove 1603, so that the position of the clamping plate 26 remains unchanged, so as to maintain the pressure applied to the connector housing and prevent the connector housing from rebounding due to elastic deformation, resulting in riveting failure.

[0045] Furthermore, after the riveting is completed, under the action of the lifting assembly, the rotating sleeve 12 is controlled to move towards the initial position, and under the action of the first limit block 13 and the spiral groove 601, the rotating sleeve 12 rotates towards the initial angle, so that the rotating disc 16 rotates towards the initial angle. Therefore, the limit post 19 will slide relative to the second annular groove 1603. When the limit post 19 moves to the position where the second annular groove 1603 is connected to the first inclined groove 1602, since the sliding block 18 is not subjected to a horizontal force at this time, the limit post 19 will cross the first inclined groove 1602 and continue to slide along the second annular groove 1603 to ensure that the distance between the two clamping plates 26 does not change. During this process, the first spring 11 elastically releases to control the upper die 17 to always be in contact with the lower die 2 through the movable plate 10 until the distance between the movable plate 10 and the push plate 8 reaches the maximum. The movable plate 10 will move synchronously with the push plate 8. Since the clamping plate 26 abuts against the connector housing, the height of the clamping plate 26 in the vertical direction does not change, and the guide post 30 moves synchronously with the sliding block 18. Therefore, the dimension of the fixed sleeve 20 and the movable rod 21 sleeved with each other decreases, and the compression amount of the second spring 31 gradually increases. Under the action of the clamping plate 26, a pulling force is provided to the connector housing to test the riveting strength. If the connector housing is not riveted in place, when subjected to the pulling force, the connector housing will deform and separate from the internal protective sleeve. If the connector housing is riveted in place, when the pulling force reaches the set value, it means that the riveting strength is judged to be qualified. The limit post 19 just disengages from the second annular groove 1603 and enters the second inclined groove 1604, causing the two sliding blocks 18 to move away from each other, so that the clamping plate 26 separates from the connector housing.

[0046] Preferably, through the telescopic action of the first cylinder 7, the mutual riveting of the connector housing and the internal protective sleeve can be realized, and after the riveting is completed, the riveting strength test is automatically performed, thereby simplifying the subsequent required test steps and optimizing the entire riveting process; Through the cooperation of the guide groove and the limit post 19, when the upper die 17 abuts against the lower die 2, the clamping plates 26 can be controlled to move towards each other to perform the riveting action on the connector housing and the internal protective sleeve. After the riveting is completed, the distance between the two clamping plates 26 can be controlled to remain unchanged, so that during the reset process of the upper die 17, a pulling force is applied to the connector housing through the clamping plates 26 to effectively identify the defect of false riveting, and after the detection is completed, the clamping plates 26 are automatically controlled to separate from the connector housing to avoid the problem of damage to qualified parts.

[0047] A method for using an automatic riveting device for an optical fiber connector terminal includes the following steps: Step 1: Sleeve the connector component to be riveted on the lower die 2; Step 2: Under the action of the lifting assembly, drive the upper die 17 to move towards the lower die 2 through the movable plate 10, and under the action of the lifting assembly, control the movement of the bidirectional drive mechanism; Step 3: When the upper die 17 abuts against the lower die 2, the position of the movable plate 10 no longer changes. Under the action of the bidirectional drive mechanism, control the movement of the riveting pulling mechanism to control the clamping plate 26 to perform a riveting action on the connector component; Step 4: After the riveting is completed, the lifting assembly controls the upper die 17 to reset. Under the action of the clamping plate 26, provide a simulated pulling force to the connector component to detect the riveting result.

[0048] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0049] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automatic riveting device for an optical fiber connector terminal, comprising: a support base, a lower die and a fixing rod arranged on the support base, a workbench arranged on the fixing rod, and a fixing plate arranged on the workbench; characterized in that it further comprises: a lifting assembly arranged on the fixing plate, the lifting assembly includes a movable plate, and an upper die is arranged on the movable plate; a bidirectional driving mechanism arranged on the workbench and connected to the lifting assembly, a riveting pulling mechanism connected to the bidirectional driving mechanism is arranged on the movable plate, the riveting pulling mechanism includes symmetrically arranged clamping plates, and when the upper die and the lower die are in contact, the bidirectional driving mechanism can control the clamping plates to perform a riveting extrusion action on the connector through the riveting pulling mechanism.

2. The automatic riveting device for an optical fiber connector terminal according to claim 1, wherein The lifting assembly includes a first cylinder arranged on the fixing plate, a push plate is arranged at the telescopic end of the first cylinder, a support column slidably connected to the movable plate is arranged on the push plate, a fixing ring abutting against the movable plate is arranged at the end of the support column, a first spring is sleeved on the support column, and two ends of the first spring respectively abut against the push plate and the movable plate.

3. The automatic riveting device for an optical fiber connector terminal according to claim 2, characterized in that, The bidirectional driving mechanism includes a support rod arranged on the workbench, a spiral groove is formed on the circumferential outer wall of the support rod, a rotating sleeve slidably arranged along the axial direction of the support rod is rotatably installed on the push plate, and a first limiting block slidably fitted with the spiral groove is arranged on the inner wall of the rotating sleeve.

4. An automatic riveting device for an optical fiber connector terminal according to claim 3, characterized in that, The bidirectional driving mechanism further includes a hollow rod slidably arranged along the axial direction of the rotating sleeve and rotatably connected to the movable plate, and a rotating disc is arranged on the hollow rod.

5. The automatic riveting device for an optical fiber connector terminal according to claim 4, characterized in that, The riveting pulling mechanism includes symmetrically arranged guiding grooves formed on the side wall of the rotating disc, symmetrically arranged sliding grooves are formed on the movable plate, sliding blocks are slidably installed in the sliding grooves, and limiting columns slidably fitted with the guiding grooves are arranged on the side walls of the sliding blocks; It further includes a translation assembly arranged on the sliding block for driving the clamping plate to move horizontally.

6. The automatic riveting device for an optical fiber connector terminal according to claim 5, characterized in that, The translation assembly includes a fixed sleeve arranged on the sliding block, a movable rod is slidably installed in the fixed sleeve, and a guiding plate is arranged at the end of the movable rod.

7. The automatic riveting device for an optical fiber connector terminal according to claim 6, wherein, The translation assembly further includes a support plate arranged on the guiding plate, a guiding rod and a second cylinder are arranged on the support plate, a movable sleeve is slidably installed on the guiding rod, and the movable sleeve and the second cylinder are fixedly connected to the clamping plate.

8. An automatic riveting device for an optical fiber connector terminal according to claim 6, characterized in that, A guiding column is arranged on the sliding block, a second spring is sleeved on the guiding column, and two ends of the second spring respectively abut against the guiding plate and the guiding column.

9. An automatic riveting device for an optical fiber connector terminal according to claim 8, characterized in that, A second cylinder is arranged on the guiding plate, a limiting plate fixedly connected to the movable rod and capable of sliding along the axial direction of the guiding column is arranged at the telescopic end of the second cylinder, and the limiting plate abuts against the fixed sleeve.

10. A method for using an automatic riveting device for fiber optic connector terminals, which uses the automatic riveting device for fiber optic connector terminals as described in any one of claims 1-9, characterized in that, Including the following steps: Step 1: Sleeve the connector component to be riveted on the lower die; Step 2: Under the action of the lifting assembly, drive the upper die to move towards the lower die direction through the movable plate, and under the action of the lifting assembly, control the movement of the bidirectional driving mechanism; Step 3: When the upper die abuts against the lower die, the position of the movable plate no longer changes. Under the action of the bidirectional driving mechanism, the riveting and pulling mechanism is controlled to move, so as to control the clamping plate to perform a riveting action on the connector component; Step 4: After the riveting is completed, the lifting assembly controls the upper die to reset. Under the action of the clamping plate, a simulated pulling force is provided to the connector component to detect the riveting result.

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