CN201618948U - Fixed section press-in device - Google Patents

Abstract

The utility model discloses a fixed knot press-in device, which comprises a shaft rotation preventive mechanism, a fixed knot positioning mechanism, an automatic spline matching mechanism, a press-in mechanism, a control mechanism and a pull pressure sensor. During usage, the fixed knot press-in device can be used to fix a solid shaft via the shaft rotation preventive mechanism, to fix a fixed knot via the fixed knot positioning mechanism, to be driven by the press-in mechanism so as to approach the solid shaft and lead the fixed knot and the solid shaft to realize automatically matching splines via the automatic spline matching mechanism, and then to press in the fixed knot. The fixed knot press-in device adopting the automatic spline matching mechanism can effectively increase production efficiency, lower labor intensity of operators and protect the operators better. By adopting the pull pressure sensor, the fixed knot press-in device can detect pressed pressure at real time, effectively improve product quality and track product quality via stored data.

Description

Fixed section press-in device

technical field

The utility model relates to a transmission shaft assembly device, in particular to a fixed joint pressing device of a transmission shaft.

Background technique

In the manufacture of auto parts automation equipment, the main assembly work of the transmission shaft is to press the fixed joint, the movable joint and the real shaft into assembly, and the real shaft and the fixed joint and the mobile joint are meshed through the paired spline teeth achieve cooperation. In the original equipment for pressing in the fixed section, the spline alignment action of making the real shaft and the spline of the fixed section relative is done manually. This action is completely done by hand, which will not only increase the labor intensity of the operator, but also Splined connections are less reliable. In addition, after the operator finishes aligning the splines, the press presses the shaft into the fixed joint during the press-in process. Since the press-in force and the press-in position cannot be monitored and saved, excessive press-in force may occur. Broken wires, excessive or insufficient pressing position, resulting in unqualified product quality, poor stability, and low efficiency. Also there is no safety protection facility in the existing fixing joint press-in device, which cannot provide good protection to the operator. Therefore, there is an urgent need to improve the existing fixed joint press-in equipment so that the quality of its products can be improved and stabilized, the production efficiency can be improved, the labor intensity of the operator can be reduced, and the operator can be better protected.

Utility model content

Aiming at the deficiencies of the above-mentioned prior art, the technical problem to be solved by the utility model is a fixed joint press-in device with an automatic spline function, which can effectively improve the reliability of the spline and reduce the labor intensity of the operator.

In order to solve the above technical problems, the utility model adopts the following technical solutions:

A fixing joint press-in device, which is used to press fit the fixed joint and the real shaft, so that the splines of the two engage, and is characterized in that it includes: a frame; a frame for fixing the real shaft to prevent the real shaft from rotating A shaft anti-rotation mechanism, the shaft anti-rotation mechanism is fixed on the frame; a fixed joint positioning mechanism is located below the shaft anti-rotation mechanism, and the fixed joint positioning mechanism has a bottom plate and a fixed joint seat , the bottom plate is slidingly connected with the frame, the fixed joint seat is connected with the bottom plate; an automatic spline alignment mechanism that can drive the fixed joint seat to rotate, and the automatic spline alignment mechanism is connected to the bottom plate connection; a press-in mechanism that can drive the bottom plate to slide up and down; a pull-pressure sensor that detects the output pressure of the press-in mechanism; a displacement sensor that detects whether the action of the spline is completed; one that is used to control the shaft The anti-rotation mechanism, the control mechanism that automatically works on the spline mechanism and the press-in mechanism, the tension pressure sensor and the displacement sensor are connected with the control mechanism.

Preferably, the shaft anti-rotation mechanism includes a first cylinder, a bush, a guide rod, an upper fixing plate, a thimble fixing plate, a floating thimble, a three-pin positioning seat and a pressing piece, and the upper fixing plate and the thimble fixing plate are fixed On the frame, the thimble fixing plate is located below the upper fixing plate, and the floating thimble is fixed on the thimble fixing plate with the tip facing down, and the first cylinder passes through the upper fixing plate and the upper fixing plate. The floating thimble is connected, the guide rod is fixed on the thimble fixing plate and passes through the bush fixed on the upper fixing plate, the three-pin joint positioning seat is located under the floating thimble, the The pressing piece is located below the three-pin joint positioning seat, and the three-pin joint positioning seat and the pressing piece are fixedly connected with the frame.

Preferably, the shaft anti-rotation mechanism further includes an anti-fall bolt, a bolt seat and a second cylinder, the bolt seat is fixed on the frame, the anti-fall bolt is located in the bolt seat, and the anti-fall The position of the bolt corresponds to the position of the three-pin joint positioning seat, and the second cylinder is fixed on the frame and connected with the anti-falling bolt.

Preferably, the displacement sensor is fixed on the upper fixing plate.

Preferably, the fixed joint positioning mechanism also includes a clamp main body sleeve, a taper bearing, a shaft sleeve and a clamp main body, the clamp main body sleeve is fixed on the bottom plate, the taper bearing is matched with the shaft sleeve and the The fixture main body is connected, the taper bearing, the shaft sleeve and the fixture main body are located in the fixture main body sleeve, the fixing joint seat is fixed on the fixture main body, and the fixture main body is connected with the automatic spline alignment mechanism.

Preferably, the automatic spline alignment mechanism includes a gear, a rack guide rail, a spur rack and a third cylinder, the third cylinder is connected to the bottom plate and drives the spur rack, and the spur rack is connected to the The gear is meshed, and the gear is connected with the fixed joint positioning mechanism.

Preferably, the press-in mechanism includes an electronic press and an electronic press connecting horn, the electronic press is fixed on the frame, and the electronic press is connected to the bottom plate through the electronic press horn connect.

Preferably, it also includes a circlip mechanism, the circlip mechanism is located between the shaft anti-rotation mechanism and the fixed joint positioning mechanism, and the circlip mechanism includes a middle slide plate, a left clamp, a right Clamps, the middle slide plate is slidingly connected with the frame, the left clamp and the right clamp are arranged oppositely and are slidingly connected with the middle slide plate, the left clamp and the right clamp are respectively connected with the left cylinder, The right cylinder is connected, and the left clamp and the right clamp are respectively provided with a snap ring collet.

Preferably, the retaining spring mechanism further includes a middle limiting plate, and the middle limiting plate is located between the left clamp and the right clamp.

Preferably, it also includes an anti-pull mechanism, the anti-pull mechanism is located between the clasp spring mechanism and the fixed joint positioning mechanism, and the anti-pull mechanism includes a pull-down plate, anti-pull angle ears, latches, latch sleeves and latches The cylinder, the anti-pull angle ear and the pin sleeve are fixed on the middle slide plate, the pin is located in the pin sleeve, the pin cylinder is connected with the pin, and the pull-down plate is fixed on the bottom plate.

The above technical solution has the following beneficial effects: when the fixed joint press-in device is in use, the real shaft is fixed by the shaft anti-rotation mechanism, the fixed joint is fixed by the fixed joint positioning mechanism, the fixed joint is driven close to the real shaft by the press-in mechanism and automatically aligned The key mechanism realizes the automatic spline alignment between the fixed joint and the real shaft, and then presses the fixed joint. During the whole process of pressing, the force and displacement are detected by the tension and pressure sensor and fed back to the control mechanism to realize closed-loop control. The device adopts the automatic spline mechanism, which effectively improves the production efficiency, reduces the labor intensity of the operator, and forms a better protection for the operator. The tension pressure sensor can detect the pressure during pressing in real time, which effectively improves the quality of the product, and can track the quality of the product through the saved data. The fixed joint press-in device can realize various types of fixed joint press-in equipment on one machine tool by replacing the corresponding fixed joint positioning mechanism, which is quick to replace, convenient to use and easy to maintain.

Description of drawings

Fig. 1 is a schematic diagram of the mechanism of the embodiment of the utility model.

Fig. 2 is a structural schematic diagram of the shaft anti-rotation mechanism in the embodiment of the present invention.

Fig. 3 is a structural schematic diagram of the fixed joint positioning mechanism and the automatic spline alignment mechanism in the embodiment of the utility model.

Fig. 4 is a structural schematic diagram of the press-in mechanism in the embodiment of the utility model.

Fig. 5 is a schematic structural view of the retaining spring mechanism in the embodiment of the utility model.

Fig. 6 is a structural schematic diagram of the pulling mechanism in the embodiment of the present invention.

Detailed ways

Below in conjunction with accompanying drawing, the preferred embodiment of the utility model is introduced in detail.

As shown in Figure 1, the fixed joint press-in device includes a frame 1, on which a shaft anti-rotation mechanism 3, a retaining spring mechanism 6, a reverse pull mechanism 7, and a fixed joint positioning mechanism are sequentially arranged on the frame 1 from top to bottom. 4. Automatic alignment of spline mechanism 2 and press-in mechanism 5. The shaft anti-rotation mechanism 3 is used to fix the real shaft 13, so as to prevent the real shaft 13 from rotating during the process of aligning the splines. Into the fixed section, the anti-pull mechanism 7 is used to test whether the connection between the real shaft and the fixed section is firm. The fixed joint positioning mechanism 4 is used to fix the fixed joint to be assembled, and the automatic spline structure 2 is used to make the outer spline of the real shaft 13 snap into the inner spline of the fixed joint, so that the real shaft 13 can be pressed into the fixed joint, The press-in mechanism 5 is used to push the fixed joint positioning mechanism 4 to move, and provides pressure for the spline of the real shaft 13 to be pressed into the spline of the fixed joint 14 to realize the press-in of the fixed joint. The fixed joint press-in device also includes a control mechanism (not shown in the figure), which controls the above-mentioned shaft anti-rotation mechanism 3, circlip mechanism 6, reverse pull mechanism 7, fixed joint positioning mechanism 4, automatic spline alignment Mechanism 2 and press-in mechanism 5 act.

As shown in FIG. 2 , the shaft anti-rotation mechanism 3 includes a first cylinder 31 , a bushing 32 , a guide rod 33 , an upper fixing plate 35 , a thimble fixing plate 36 , a floating thimble 37 , a three-pin positioning seat 38 and a pressing piece 39 . The upper fixed plate 35 is fixed on the frame 1, the thimble fixed plate 36 is located below the upper fixed plate 35, the first cylinder 31 is installed in the cylinder block 81, the cylinder block 81 is located above the upper fixed plate 35, and the cylinder of the first air cylinder 31 floats The head passes through the upper fixing plate 35 and is connected with the thimble fixing plate 36, and the floating thimble 37 is fixed on the thimble fixing plate 36 by screws. The guide rod 33 is connected with the thimble fixing plate 36 , the bush 32 passes through the upper fixing plate 35 , the guide rod 33 passes through the bush 32 and can move linearly along the bush 32 . The three-pin positioning seat 38 is located below the floating thimble 37 and is fixed on the frame 1 , and the pressing piece 39 is located below the three-pin positioning seat 38 and is connected to the frame 1 .

The shaft anti-rotation mechanism 3 also includes an anti-fall bolt 11, a bolt seat and a second cylinder 12, the bolt seat is fixed on the frame 1, the anti-fall bolt 11 is located in the bolt seat, and the second cylinder 12 is fixed on the frame 1 and is connected with the frame 1. The anti-fall bolt 11 is connected, and the second cylinder 12 can drive the anti-fall bolt 11 to extend laterally to the left or right. A displacement sensor 34 is also arranged on the upper fixing plate 35, and the displacement sensor 34 is connected with the control mechanism. The first air cylinder 31 and the second air cylinder 12 are connected with the control mechanism, and the control mechanism controls the actions of the first air cylinder 31 and the second air cylinder 12 .

When the shaft anti-rotation mechanism 3 is in action, firstly the real shaft 13 is hung on the pressure member 39 through the three-pin joint at the shaft end, and the first cylinder 31 vertically downwards with the thimble fixing plate 36 to move axially along the guide rod 33. Movement, the floating thimble 37 presses down on the central axis of the real shaft 13, and prevents the axial rotation of the real shaft 13 through the three-pin joint seat 38. In order to ensure that the floating thimble 37 is as close as possible to the axial position of the real shaft 13 when it is pressed down, when the floating thimble 37 is pressed down, the second cylinder 12 moves, and the anti-reverse pin 11 is extended to prevent the real shaft 13 from being forced outward during the subsequent action process. dump. After the automatic alignment of the splines is successful, the guide rod 33 will sink, and the displacement sensor 34 will detect the signal, and feed the signal back to the control mechanism, so that the control mechanism controls the device to carry out the next step.

As shown in Figure 3, the fixed joint positioning mechanism 4 includes a base plate 42 and a clamp body cover 43, the base plate 42 is movably connected to the frame 1 through the frame guide rail, the clamp body cover 43 is fixed on the base plate 42, and the clamp body The sleeve 43 is provided with a tapered bearing and an axle sleeve that cooperate with each other, and the axle sleeve is connected with the fixture main body 44. The fixture main body 44 is provided with a fixed node seat 45, and the fixture main body 44 is connected with the automatic alignment spline mechanism 2. The bottom plate 42 is also equipped with an inductive sensor 41 , and the inductive sensor 41 is arranged in cooperation with the fixed node base 45 to detect whether a fixed node is installed on the fixed node base 45 . When this mechanism is in use, the fixed joint 14 is put into the fixed joint seat 45 and fixed, and the spline mechanism 2 drives the fixed joint seat 45 to rotate through the clamp body 44 automatically, and the fixed joint 14 can rotate together with the fixed joint seat 45 .

As shown in Figure 3 again, the automatic alignment spline mechanism 2 comprises a gear 21, a rack guide rail, a spur rack 22, and a third cylinder 23, and the third cylinder 23 and the rack guide rail are fixed on the side plate 24, and the side 24 It is fixedly connected with the bottom plate 42 , and the gear 21 is sleeved and fixed on the fixture main body 44 . The spur rack 22 is located in the rack guide rail and connected to the third cylinder 23 , the spur rack 22 meshes with the gear 21 , and the gear 21 is sleeved and fixed on the fixture main body 44 . The third air cylinder 23 is connected with the control mechanism, and its action is controlled by the control mechanism.

When the automatic spline mechanism 2 acts, the spur rack 22 can move linearly along the rack guide rail with the movement of the third cylinder 23, thereby driving the gear 21 to rotate, and converting the linear motion of the third cylinder 23 into circular motion , the fixture main body 44 is driven by the gear 21 with the fixed joint seat 45, and the fixed joint 14 also makes a circular motion back and forth. Can snap into the spline in the fixed joint 14, realize automatic spline alignment function.

As shown in Figure 4, the press-in mechanism 5 includes an electronic press 52, and the electronic press 52 is fixed on the frame 1, and the electronic press connecting horn 51 of the electronic press 52 is fixedly connected with the lower base plate 25, and the lower base plate 25 Fixedly connected with the side plate 24, and because the side plate 24 is fixedly connected with the base plate 42, the electronic press 52 can drive the fixed joint positioning mechanism 4 to move up and down like this, when moving to the predetermined pair of spline positions (according to the real shaft and the fixed joint The position of the model set in the system) starts to automatically align the splines. After the automatic alignment of the splines is successful, the fixed joint positioning mechanism 4 continues to move upwards to press the real shaft into the fixed joint. The electronic press 52 is controlled by the control mechanism to move up and down.

In this press-in mechanism, the electronic press 52 is installed at the bottom of the machine tool, the effective stroke is 150MM, the speed in the whole stroke is 10-1000MM/min, and the two-way is adjustable (can be set in different stroke sections), the maximum The pulling pressure is 30000N. Since the size of the electronic press 52 is relatively long, a Z-shaped conduction structure can be used to lower the position of the press assembly operation of the electronic press for easy operation.

As shown in Figure 5, the retaining spring mechanism 6 includes a middle slide plate 61, a left clamp 62, a right clamp 63, a pair of clamp spring chucks 64, 65, and the middle slide plate 61 is slidably connected with the frame 1. Circlip collets 64, 65 are respectively fixed on the left and right clamps 62, 63 and arranged oppositely, and the left and right clamps 62, 63 are slidably connected with the middle slide plate 61. The left clamp 62 is connected with the left cylinder 66, the right clamp 63 is connected with the right cylinder 67, and the left and right cylinders 66, 67 can drive the left and right clamps 62, 63 to move left and right on the middle slide plate 61 to realize the clamps 62, 63 The action of holding the circlip. A middle limiting plate 69 is also arranged between the left clamp 62 and the right clamp 63 , and the middle limiting plate 69 is fixed on the middle sliding plate 61 through the reinforcing plate 68 . Left cylinder 66, right cylinder 67 are all connected with control mechanism.

This circlip mechanism 6 is mainly used for pressing in the fixed section provided with the circlip on the real shaft. When the real shaft provided with the circlip needs to be pressed into the fixed section, the control mechanism drives the left and right cylinders 66, 67 to drive the left 1. The right clamps 62, 63 move relatively, so that the clamping clamps 64, 65 clamp the clamps so that the clamps can enter the fixed section, and the middle limit plate 69 is located between the left clamp 62 and the right clamp 63. Prevent the excessive pressure of the two clamps from crushing the snap ring.

As shown in Figure 6, the anti-pull mechanism 7 includes a pull-down plate 71, an anti-pull angle ear 72, a latch 73, a latch sleeve 74 and a latch cylinder 75, and the anti-pull angle ear 72 and the latch sleeve 74 are fixed on the middle slide plate 61, and the latch 73 Located in the pin sleeve 74 , the pull-down plate 71 is fixed on the bottom plate 42 , the pin 73 is connected with the pin cylinder 75 , and the pin 73 is used to connect the pull-down plate 71 and the anti-pull angle ear 72 .

As shown in Figures 5 and 6, when the fixed joint is successfully pressed in, the piston rod of the pin cylinder 75 moves, and the pin 73 is driven to connect the pull-down plate 71 with the reverse pull angle ear 72; The section positioning mechanism 4 and the circlip mechanism 6 descend, and a pair of circlip collets 64 and 65 of the circlip mechanism 6 will push against the fixed joint, and the reverse pulling force of the electronic press 52 passes through the circlip chucks 64 and 65. It acts on the fixed joint, so as to realize the reverse pull on the fixed joint.

As shown in Figure 1 again, in order to be able to detect in real time the pressure when the fixed joint is pressed in and the pulling pressure when pulling back, the device is also provided with a pulling pressure sensor 8, which is positioned above the cylinder block 81 and It is fixedly connected with the cylinder base 81 , and the cylinder base 81 is connected with the pressure piece 39 through a shell plate 82 . In this way, during the press-in process of the real shaft and the fixed joint, the pressure provided by the electronic press will be transmitted to the pull pressure sensor 8 through the fixed joint 14, the real shaft 13, the pressing piece 39, the shell plate 82 and the cylinder seat 81, and the pull pressure sensor 8 Feedback the measured pressure value to the control mechanism. In the reverse pull process, the reverse pull force will be transmitted to the pull pressure sensor 8 through the fixed joint 14, the real shaft 13, the pressure piece 39, the shell plate 82 and the cylinder seat 81, and the pull pressure sensor 8 will feed back the measured reverse pull force value to the control agency. Apparently, the above-mentioned tension-pressure sensor 8 can also be arranged at other positions along the force route between the real axis and the fixed joint.

In the fixed joint pressing device, the control mechanism adopts PLC and touch screen to control and display the working status of the workstation, and is equipped with a tension pressure sensor, which can monitor the entire pressure and pull force during the reverse pull process, so that the measured value can be displayed on the touch screen. Real-time display, and at the same time, it can also form a graph of the relationship between force and displacement with the displacement signal. In the process of force detection and monitoring, once the relevant parameters set are exceeded, the machine tool will automatically alarm, and the machine tool can only move after the alarm information is eliminated manually. According to the process requirements, the upper and lower limits of pressure can be set on the operation panel, and the stroke of pressing and pulling can be set in multiple levels. Each set of settings can be reserved separately and called according to actual needs, and the system can save multiple sets of setting information.

The main function of the fixing joint pressing device is to realize the pressing of the fixing joint, and it has the functions of pressing in and pulling back the fixing joints in various forms. In the pressing-in process, this function may not be used for some transmission shafts that do not need to hold the circlip tightly, and the device can also work automatically. However, all assembled shafts must generally undergo a tensile test, and all positions, forces, and limits output to the servo mechanism will be stored in order to detect whether there are defective products during the production process. In addition, the device is also equipped with safety protection facilities to provide reliable safety protection for the operator.

The new fixed joint press-in device can realize automatic press-in and reverse pull of splines and fixed joints. It adopts a closed-loop servo digital control system, which can accurately control the output torque and displacement in the process and monitor and feed back in real time. Data acquisition The system records and saves the torque information. By replacing the corresponding positioning tool, various types of fixing joints can be pressed in on one machine tool. All tooling has a quick change function, which is convenient for use and maintenance. In summary, the fixed joint pressing device of the present utility model can realize automatic force and displacement monitoring and feedback record preservation in the process of spline, fixed joint pressing and back pulling, which reduces the labor intensity of the operator and also The reliability of the spline is improved, the quality of the product is improved and stabilized, and the quality of the product can be tracked through the saved data to improve the quality of the product.

The fixing joint press-in device provided by the embodiment of the utility model has been introduced in detail above. For those of ordinary skill in the art, according to the idea of the embodiment of the utility model, there will be changes in the specific implementation and application range , In summary, the content of this specification should not be construed as a limitation to the utility model, and any changes made according to the design idea of the utility model are within the protection scope of the utility model.

Claims (10)

1. fixed knot press-in device is used for fixed knot is pressed into real axis and cooperates, and makes both spline engagement, it is characterized in that it comprises:

One frame;

One is used for fixing the axle rotation-preventing mechanism that real axis prevents that real axis from rotating, and described axle rotation-preventing mechanism is fixed on the described frame;

One fixed knot detent mechanism is positioned at the below of described axle rotation-preventing mechanism, and described fixed knot detent mechanism has a base plate and a fixed knot seat, and described base plate and described frame are slidingly connected, and described fixed knot seat is connected with described base plate;

One can drive the automatic design register key mechanism that described fixed knot seat rotates, and described automatic design register key mechanism is connected with described base plate;

One can drive the pressing mechanism that described base plate slides up and down;

One detects the pull pressure sensor of described pressing mechanism output pressure;

One is used for detecting the displacement transducer of whether finishing the spline action;

One is used for controlling the controlling organization of described axle rotation-preventing mechanism, automatic design register key mechanism, pressing mechanism work, and described pull pressure sensor, displacement transducer are connected with described controlling organization.

2. fixed knot press-in device according to claim 1, it is characterized in that: described axle rotation-preventing mechanism comprises first cylinder, lining, guide rod, upper mounted plate, the thimble fixed head, thimble floats, three pin joint positioning seat and casting dies, described upper mounted plate, the thimble fixed head is fixed on the described frame, described thimble fixed head is positioned at described upper mounted plate below, described unsteady thimble needle point is fixed on the described thimble fixed head down, described first cylinder passes described upper mounted plate and is connected with described unsteady thimble, described guide rod is fixed on the described thimble fixed head and passes the described lining that is fixed on the described upper mounted plate, described three pin joint positioning seats are positioned at described unsteady thimble below, described casting die is positioned at described three pin joint positioning seat belows, described three pin joint positioning seats, casting die is fixedlyed connected with described frame.

3. fixed knot press-in device according to claim 2, it is characterized in that: described axle rotation-preventing mechanism also comprises anti-down latch, plug housing and second cylinder, described plug housing is fixed on the described frame, described anti-down latch is arranged in described plug housing, described anti-down latch is corresponding with described three pin joint positioning seat positions, and described second cylinder is fixed on the described frame and with described anti-down latch and is connected.

4. fixed knot press-in device according to claim 2 is characterized in that: described displacement transducer is fixed on the described upper mounted plate.

5. fixed knot press-in device according to claim 1, it is characterized in that: described fixed knot detent mechanism also comprises jig main body cover, cone bearing, axle sleeve and jig main body, described jig main body cover is fixed on the described base plate, described cone bearing matches to merge with described axle sleeve and is connected with described jig main body, described cone bearing, axle sleeve and jig main body are arranged in described jig main body cover, described fixed knot seat is fixed on the described jig main body, and described jig main body is connected with described automatic design register key mechanism.

6. fixed knot press-in device according to claim 1, it is characterized in that: described automatic design register key mechanism comprises gear, tooth bar guide rail, spur rack and the 3rd cylinder, described the 3rd cylinder is connected with described base plate and drives described spur rack, described spur rack and described gears engaged, described gear is connected with described fixed knot detent mechanism.

7. fixed knot press-in device according to claim 1, it is characterized in that: described pressing mechanism comprises electronics press and electronics press joint angle ear, described electronics press is fixed on the described frame, and described electronics press is connected with described base plate by described electronics press angle ear.

8. fixed knot press-in device according to claim 1, it is characterized in that: also comprise one armful of jump ring mechanism, described armful of jump ring mechanism is between described axle rotation-preventing mechanism and described fixed knot detent mechanism, described armful of jump ring mechanism comprises a middle slide plate, left clamp, right clamp, described middle slide plate and described frame are slidingly connected, described left clamp, right clamp are oppositely arranged and are slidingly connected with described middle slide plate, be connected with left cylinder, right cylinder respectively on described left clamp, the right clamp, respectively be provided with a jump ring chuck on described left clamp, the right clamp.

9. fixed knot press-in device according to claim 8 is characterized in that: described armful of jump ring mechanism also comprises limiting plate in, and described middle limiting plate is between described left clamp, right clamp.

10. fixed knot press-in device according to claim 8, it is characterized in that: also comprise an anti-machine drawing structure, described anti-machine drawing structure is between described armful of jump ring mechanism and fixed knot detent mechanism, described anti-machine drawing structure comprises lower pulling plate, anti-angle ear, latch, pin bushing and the latch cylinder of drawing, described anti-angle ear and the pin bushing of drawing is fixed on the described middle slide plate, described latch is arranged in described pin bushing, and described latch cylinder is connected with described latch, and described lower pulling plate is fixed on the described base plate.

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