CN102861863B - Oil-pressure chain rivet head machine - Google Patents

Abstract

The invention provides an oil-pressure chain rivet head machine, comprising a worktable and a supporting frame, wherein the supporting frame is provided with a hydraulic cylinder and an upper rivet head die is connected below the hydraulic cylinder; a chain channel is arranged on the worktable; the chain channel is internally provided with a lower rivet head die at a position corresponding to the upper rivet head die; the worktable is further provided with a movable plate; and one side of the movable plate, which is close to the chain channel, is in a saw-tooth structure, and the movable plate is connected with a movable plate driving device. A PLC (Programmable Logic Controller) control device is combined with an oil-pressure system so as to realize full-automatic, intelligent and multifunctional rivet heads which can be a four-faced rivet head and a double-faced rivet head; and a certain section of a whole chain is not subjected to the rivet head so as to be convenient for post-period detection and cutting.

Description

A hydraulic chain riveting machine

technical field

The invention relates to the chain manufacturing industry, in particular to a hydraulic chain riveting head machine.

Background technique

In the chain manufacturing industry, the assembled chain must be riveted. However, because the current chain riveting equipment adopts the principle of mechanical linkage, the design of the riveting machine is complex in structure and bulky, and the strength and speed of mechanical stamping riveting are completely unacceptable. control, the quality of the riveting head cannot be adjusted to the best state, and all the chain links are riveted, and the function of skipping the joint cannot be realized, resulting in a lot of waste. In addition, the noise of mechanical stamping is large, which can no longer meet the requirements of construction of energy-saving and environmental protection. According to the requirements of the society, the equipment transformation of the chain manufacturing industry has been promoted to the direction of national strategic development.

As shown in Figure 1, the traditional chain riveting head drives the riveting head frame to reciprocate up and down through the cam on the main shaft. Finish the job while moving the rivet head. However, this kind of riveting head machine can only adapt to the riveting heads of small and medium chains. If a larger chain needs to be riveted, the up and down movement range of the riveting head frame needs to be increased, the pitch of the chain is increased, and the size of the feed plate needs to be enlarged. Whether it is the cam that drives the riveting head frame or the driving cam that drives the moving plate, the specifications need to be greatly increased, and it is inevitable to design a large and complex riveting head machine. Moreover, such a riveting machine has no flexibility at all. The 4 riveting dies or 2 riveting dies connected to the riveting head frame can only be moved up and down with the riveting head frame, and all of them are passively chamfered against the chain. Head, but not according to the need for four-sided riveting head, two-sided riveting head on the chain. And it is impossible to realize the skipping riveting head. In the subsequent chain cutting process, because the pin shaft of the chain with the cut off head is riveted, it cannot be ejected smoothly by the cutting device, causing damage to the relevant chain links, so as to manufacture a 50 Take the chain of 50 knots as an example, every 50 joints of chain will lose a joint of chain in the follow-up cutting process, causing great waste.

To sum up, in the current chain manufacturing industry, chain riveting heads are far from meeting people's requirements for the environment, chain quality, and low production loss. Therefore, more and more professionals begin to study and improve the chain rivet technology, so that the chain rivet can meet people's demands for high-quality chains, low investment and environmental protection.

Contents of the invention

The purpose of the present invention is to provide an intelligent full-automatic hydraulic chain riveting machine.

For realizing the above-mentioned purpose of the invention, the technical scheme adopted in the present invention is:

A hydraulic chain riveting machine, comprising a workbench and a support frame, a hydraulic cylinder is arranged on the support frame, and an upper riveting die is connected below the hydraulic cylinder; a chain channel is arranged on the workbench, and the A lower riveting die is provided in the chain channel corresponding to the upper riveting die; a moving plate is also arranged on the workbench, and the side of the moving plate close to the chain channel has a sawtooth structure, and is connected with the moving plate driving device. connected.

Further, the moving plate driving device includes a main shaft connected to the motor, a left and right driving cam mechanism and a front and rear driving cam mechanism installed on the main shaft; A front and rear moving slide block is installed on the front and back moving slide block, and a left and right moving linear guide rail is fixedly mounted on the left and right moving linear guide rail, and a left and right moving slide block is installed on the left and right moving linear guide rail, and the moving plate is fixed on the left and right moving slide block.

Further, a hydraulic cylinder descending cam, a shutdown cam and a moving plate displacement cam are installed on the main shaft, a first sensing device is installed at the descending cam of the hydraulic cylinder, and a second sensing device is installed at the shutdown cam, A third sensing device is installed at the displacement cam of the moving plate, a fourth sensing device is installed at the left and right moving slider, the first sensing device, the second sensing device, the third sensing device and the fourth sensing device Connected to the control unit.

Further, the hydraulic cylinder is connected with a hydraulic station, and the hydraulic station is connected with a control device.

Further, there are four hydraulic cylinders and upper riveting dies, and the first and second of the four upper riveting dies are horizontal riveting dies, and the third and fourth are vertical riveting dies.

Further, the distance between the four upper riveting dies is 3 chains.

Further, a stroke adjustment block is installed on the upper end of the output shaft of the hydraulic cylinder, a photoelectric switch is installed on the stroke adjustment block, the photoelectric switch is connected to a control device, and the control device is also connected to an alarm device.

Further, there are two hydraulic cylinders and upper riveting dies.

Adopt above-mentioned technical scheme, the beneficial effect that the present invention can realize has:

(1) The present invention cancels the cumbersome and complicated cam-controlled up-and-down reciprocating movement system of the riveting dies in the prior art, and independently drives the respective riveting dies through independent oil cylinders, and can flexibly adjust the riveting head mode according to product requirements;

(2) The present invention adopts the combination of PLC control device and hydraulic system, which can realize automatic, intelligent and multi-functional riveting head, which can be four-sided riveting head and double-sided riveting head, and can be set to a certain section in the whole chain No rivet head is used to facilitate later detection and cutting.

(3) The present invention can detect whether each part works normally at any time, and can realize automatic shutdown when a failure occurs, and will not cause damage to the chain.

(4) When the solenoid valve controlling the hydraulic cylinder fails or other reasons cause the output shaft of the hydraulic cylinder not to move back and forth, the photoelectric switch does not sense the stroke adjustment block within the predetermined time, and it can be transmitted to the control device, and the control device controls the alarm device to alarm. Prevent leak riveting due to the output shaft of the hydraulic cylinder.

Description of drawings

Fig. 1 is the structural representation of traditional chain riveting head machine;

Fig. 2 is a structural representation of the present invention;

Fig. 3 is a structural schematic diagram of a hydraulic cylinder and its control device;

Fig. 4 is a schematic diagram of the workbench structure;

Fig. 5 is a moving track diagram of the moving plate;

Fig. 6 is a schematic diagram of the structure of the main shaft connected to the motor;

Fig. 7 is a position diagram of the induction device;

Figure 8 is a schematic diagram of the connection of the mobile cam;

Fig. 9 is a structural schematic diagram of the riveting head die;

Fig. 10 is the structural diagram when the riveting die and the chain act;

Fig. 11A, 11B, 11C are the schematic diagrams of the structure of the rivet head die on the structure of the three kinds of rivet heads that can be realized by the present invention;

Figure 12 is a perspective view of the workbench;

Fig. 13 is a schematic diagram of an embodiment of the present invention.

Fig. 14 is a schematic diagram of another embodiment of the present invention.

Among them: 1 workbench, 11 forward and backward moving linear guide rail, 12 forward and backward moving slider, 13 left and right moving linear guide rail, 14 left and right moving slider, 2 support frame, 3 hydraulic cylinder, 31 output shaft, 32 stroke adjustment block, 33 photoelectric switch , 34 alarm device, 4 upper riveting head die, 5 moving plate, 51 sawtooth structure, 6 chain channel, 7 lower riveting head die, 8 moving plate driving device, 81 motor, 82 main shaft, 821 hydraulic cylinder descending cam, 822 stop cam , 823 moving plate displacement cam, 83 left and right drive cam mechanism, 84 front and rear drive cam mechanism, 9 control device, 91 first induction device, 92 second induction device, 93 third induction device, 94 fourth induction device.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Fig. 2 is a structural schematic diagram of the present invention, as shown in Fig. 2, a kind of hydraulic chain riveting head machine, comprises workbench 1 and support frame 2, and described support frame 2 is provided with hydraulic cylinder 3, and described hydraulic cylinder 3 The upper riveting die 4 is connected below; the workbench 1 is provided with a chain passage 6, and the position corresponding to the upper riveting die 4 in the chain passage 6 is provided with a lower riveting die 7; the workbench 1 A moving plate 5 is also arranged on the top, and the side of the moving plate 5 close to the chain channel 6 is a sawtooth structure 51 and is connected with the moving plate driving device 8 . Also fixedly equipped with forward and backward moving linear guide rail 11 on the described workbench 1, forward and backward moving slide block 12 is installed on the described front and rear moving linear guide rail 11, and left and right moving linear guide rail 13 is fixedly installed on the described front and rear moving slide block 12, so The left and right moving slide block 14 is installed on the left and right moving linear guide rail 13 , and the moving plate 5 is fixedly mounted on the left and right moving slide block 14 . The moving plate 5 is driven by the moving plate driving device 8 to move back and forth or left and right.

Fig. 3 is a structural schematic diagram of the hydraulic cylinder and its control device. As shown in Fig. 3, four hydraulic cylinders 3 are installed on the support frame 2, which are respectively marked as A, B, C, and D, and the four hydraulic cylinders are connected to the hydraulic station. connected, the hydraulic station supplies power to the hydraulic cylinder, and the hydraulic station is controlled by the PLC control device 9 to control the hydraulic cylinder 3. The control device is also connected with the first sensing device S1, the second sensing device S2, the third sensing device S3 and the fourth sensing device The sensing device S4 is connected to receive the motion information from the hydraulic cylinder descending cam, stop cam, moving plate shifting cam and left and right moving slider, so as to realize the control of the hydraulic cylinder and the moving plate.

Fig. 4 is a schematic diagram of the workbench structure. As shown in Fig. 4, a front and rear moving rail system (comprising a front and rear moving linear guide 11 and a front and rear moving slider 12) and a left and right moving rail system (including a left and right moving linear guide 13 and a left and right moving linear guide 13 and Moving the slider left and right 14) provides basic conditions for the front and rear or left and right displacement of the moving plate, and the moving plate is connected to the driving device of the moving plate, which drives the moving plate along the track system that moves forward, backward or left and right through a motor or other equipment. Move, and connect the front and rear moving springs and left and right moving springs at the other end, so that the moving plate can return to its original position through the spring after the driving device drives the displacement. The specific moving track is shown in Figure 5. The driving device drives the moving plate to the left Move, and then move forward, the sawtooth structure 51 on the moving plate is inserted into the chain gap with the pin shaft, at this moment, the left and right moving extension springs are all in a stretched (or tightened) state, and the left and right driving stops acting on the moving plate, and the left and right movement The extension spring pulls the moving plate to the right, driving the chain to move to the right, the front and rear drive stops acting on the moving plate, and the forward and backward movement of the extension spring drives the sawtooth structure on the moving plate to leave the chain gap, realizing a chain displacement. That is, the moving plate is inserted into the chain, moves the chain to the right, exits the chain backwards, and moves to the left, as an action cycle.

Fig. 6 is the schematic diagram of the structure of the main shaft connected with the motor. As shown in Fig. 6, the mobile plate driving device includes a main shaft 82 connected with the motor, a left and right driving cam mechanism 83 and a front and rear driving cam mechanism 84 installed on the main shaft 82; The left and right driving cam mechanism and the front and rear driving cam mechanism control the moving plate to move backward and left (the connection of the moving cam is shown in Figure 8, and the moving plate is driven to move through the connection between the bearing and the rotating arm, that is, the left and right moving cam drives the moving plate to move left and right , through the action of the rotating arm, the driving force of the protruding surface of the cam is converted into a pulling force on the moving plate, the moving plate moves to the right, pulls up the spring, and then relies on the restoring force of the spring, the moving plate moves to the right, pushing the chain to move to the right) , and compress or tension the spring between the moving plate and the machine table, the spring return causes the moving plate to move forward and rightward. Also installed on the main shaft is a hydraulic cylinder drop cam 821, a stop cam 822 and a moving plate displacement cam 823, as shown in Figure 7, a first induction device 91 is installed at the drop cam 821 of the hydraulic cylinder, and the stop cam A second sensing device 92 is installed at the shifting cam of the moving plate, a third sensing device 93 is installed at the shifting cam of the moving plate, a fourth sensing device 94 (see Fig. 4 ) is installed at the left and right moving slider, and the first sensing device, the second sensing means, the third sensing means and the fourth sensing means are connected to the control means 9 (see Fig. 3). The first induction device S1 in the figure and the fourth induction device S4 in Figure 4 should have a reasonable time difference. When the time difference between the two is changed due to jamming or other conditions, it will start and stop, and the operator will Check and troubleshoot. When the operation stops, it will only stop when it detects that each part is in a reasonable position. This design is to prevent direct shutdown. If the riveting head is being chamfered, it will cause damage to the equipment or increase the product scrap rate.

Fig. 9, Fig. 10 are respectively the schematic diagram of the structure of the riveting head die and the structural diagram when the riveting head die and the chain interact. The loss is far less than that of the existing mechanical riveting machine, and its service life is extended by more than half. This is because the oil pressure riveting machine adjusts the oil pressure through the PLC control device to adjust the pressure and speed of the hydraulic cylinder, so that the hydraulic riveting head The force is uniform, the pressure speed is balanced, and the service life of the riveting die is extended.

Figures 11A, 11B, and 11C are the structures of three riveting heads that can be realized in the present invention. Since the present invention adopts the independent control of the riveting head mold, as long as the action of the corresponding oil cylinder is controlled, the chain can be flexibly riveted horizontally as required (Fig. 11A) , vertical riveting (Fig. 11B), horizontal and vertical riveting (Fig. 11C), especially the rivet head that can skip joints to the chain, that is to say, according to the length of the finished chain, correspondingly set the riveting head that skips the chain link at intervals, the present invention uses The combination of PLC and hydraulic system forms a fully automatic intelligent multi-functional model, which can be used for four-sided riveting and two-sided riveting. Set the non-riveting head to facilitate the detection and cutting of the later stage. The application of the jumper riveting head greatly facilitates the subsequent chain cutting operation (the chain coming out of the chain assembly machine is continuous, after the riveting head, oiling and other processes, it must be cut into sections according to the length of the finished chain, and each The end connection of the segment chain is a complete chain). In the past, the traditional chain riveting head could not be skipped. In the subsequent chain cutting process, because the pin shaft of the chain to be cut was riveted by the riveting head, it could not be ejected smoothly by the cutting device, resulting in damage to the relevant chain link. Such as needing to manufacture a 50-joint chain, will lose a chain, causes very big waste. In the present invention, as long as the skipping interval is set in the man-machine interface, the action of the corresponding oil cylinder is controlled by counting the chain, and the chain link that will be operated in the subsequent chain cutting process is skipped without the riveting head, no matter whether it is double-sided riveting or four-sided riveting The chain can realize this skipping function according to the preset.

Figure 12 is a three-dimensional view of the workbench. As shown in Figure 12, the chain with the pin shaft is in the chain channel, and there is a lower riveting head mold at the corresponding position below the chain with the pin shaft, and the moving plate is inserted into the gap of the chain. The forward and backward moving track system and the left and right moving track system stipulate the moving track of the moving plate, and one side of the moving plate is connected to the driving device of the moving plate through a lever.

The hydraulic riveting head adopted in the present invention is to set the hydraulic pressure to carry out the riveting head function, which will not cause the pin shaft to be bent and deformed after the riveting head, so as to ensure the service life of the machine, and the slide block adopts a linear guide rail. It can be applied to various products requiring high quality chains, such as motorcycle chains, automobile chains, leaf chains, high-quality agricultural machinery chains, high-quality industrial chains, and chains with accessories, etc.

Fig. 13 is a schematic diagram of an embodiment of the present invention. The hydraulic chain riveting head machine provided by the present invention can be set as two cylinders, three cylinders, four cylinders, etc. as shown in Fig. 13. The head machine, combined with Figure 3 and Figure 4, according to the design, every movement cycle of the moving plate, the conveying chain is 2 chain links to the right, and the distance between the 4 upper riveting heads above the chain is controlled by their respective oil cylinders, and the distance is 3 chains The pitch corresponds to the 4 lower riveting dies below the chain. Among them, the direction of the AB riveting head mold is the same, we set it as horizontal riveting, and the direction of CD is the same, and design it as vertical riveting. It can be seen from Figure 4 that after the chain link at position 1 is riveted horizontally, when it moves to position 7, it is riveted vertically again, thus completing the 4-sided riveting head. In the same way, the connection at 2 positions is riveted horizontally at position 4, and then riveted vertically after running to position 10 to complete the 4-sided riveting head. That is to say, only when it is in the positions of 1, 4, 7, and 10, there is a corresponding riveting die.

Fig. 14 is a schematic diagram of another embodiment of the present invention. As shown in Fig. 14, a stroke adjustment block 32 is installed on the upper end of the output shaft 31 of the hydraulic cylinder of the hydraulic riveting machine provided above, and a photoelectric A switch 33, the photoelectric switch 33 is connected with the control device 9, and the control device is also connected with an alarm device 34. When the solenoid valve controlling the hydraulic cylinder fails or other reasons cause the output axis of the hydraulic cylinder to not move back and forth, the photoelectric switch does not sense the stroke adjustment block within the predetermined time, and it can be transmitted to the control device, which controls the alarm device to alarm 34 to prevent The cause of the output shaft of the hydraulic cylinder caused missing riveting and so on.

The above-mentioned embodiments only express the implementation manner of the present invention, and the description thereof is relatively specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (7)

1. A hydraulic chain riveting head machine, comprising a workbench and a support frame, is characterized in that: A hydraulic cylinder is arranged on the support frame, and an upper riveting die is connected below the hydraulic cylinder; A chain channel is provided on the workbench, and a lower rivet die is provided at a position corresponding to the upper rivet die in the chain channel; The workbench is also provided with a moving plate, and the side of the moving plate close to the chain passage is a sawtooth structure, and is connected with the moving plate driving device; The moving plate driving device includes a main shaft connected to the motor, a left and right driving cam mechanism and a front and rear driving cam mechanism installed on the main shaft; The workbench is fixed with a front and rear moving linear guide rail, and a front and rear moving slider is installed on the front and rear moving linear guide rail. There is a left and right moving slider, and the moving plate is fixedly mounted on the left and right moving slider. 2. The hydraulic chain riveting machine according to claim 1, characterized in that: the main shaft is also equipped with a hydraulic cylinder descending cam, a stop cam and a moving plate shifting cam, A first sensing device is installed at the descending cam of the hydraulic cylinder, A second induction device is installed at the stop cam, A third induction device is installed at the displacement cam of the moving plate, A fourth sensing device is installed at the left and right moving slider, The first sensing device, the second sensing device, the third sensing device and the fourth sensing device are connected with the control device. 3. The hydraulic chain riveting machine according to claim 1, characterized in that: the hydraulic cylinder is connected to a hydraulic station, and the hydraulic station is connected to a control device. 4. The hydraulic chain riveting machine according to claim 1, characterized in that: there are four hydraulic cylinders and upper riveting dies, and the first and second of the four upper riveting dies are horizontal Riveting dies, the third and fourth are vertical riveting dies. 5. The hydraulic chain riveting machine according to claim 4, characterized in that: the distance between the four upper riveting dies is 3 chains. 6. The hydraulic chain riveting machine according to claim 4, characterized in that: a stroke adjustment block is installed on the upper end of the output shaft of the hydraulic cylinder, and a photoelectric switch is installed at the stroke adjustment block, and the photoelectric switch is connected to the The control device is connected, and the control device is also connected with an alarm device. 7. The hydraulic chain riveting machine according to claim 1, characterized in that there are two hydraulic cylinders and upper riveting dies.