A pin chain automatic assembly machine

Abstract

The present invention relates to the technical field of chain production equipment, and provides a pin chain automatic assembly machine, which aims to solve the problem that the assembly process is mainly done by manual work, on the one hand, the processing intensity is high, the human resources are seriously wasted, and on the other hand, the processing efficiency cannot meet the needs of production expansion. The machine includes a pin entry pre-pressing mechanism, a rivet head mechanism, a material buffer mechanism, a pre-tensioning mechanism, a pin removal mechanism, and a coil material discharge mechanism arranged in sequence from upstream to downstream along the pin chain processing flow. The pin entry pre-pressing mechanism, the rivet head mechanism, the material buffer mechanism, the pre-tensioning mechanism, the pin removal mechanism, and the coil material discharge mechanism are conveyed for pin chain processing through a chain conveying track, and a plurality of chain conveying units are alternately distributed on both sides of the chain conveying track. The present invention is particularly suitable for the mechanized, automated, and continuous assembly of pin chains, and has high social use value and application prospects.

Description

Technical Field

[0001] The invention relates to the technical field of chain production equipment, and in particular to an automatic pin-joined chain assembly machine. Background Art

[0002] The transmission chain is an important power transmission part in mechanical equipment. Through the hyperbolic arc "chain" design, friction is reduced. It is used in places with relatively large power and relatively slow running speed, which has obvious advantages over belt transmission. Most chains are composed of chain plates, chain pins, bushings and other components. Other types of chains only make different changes to the chain plates according to different needs. For example, some chains are equipped with scrapers, some are equipped with guide bearings, and some are equipped with rollers on the chain plates, etc. These are all modifications for different application occasions.

[0003] Among them, the pin chain refers to a chain whose links are made of forgeable cast iron and connected by steel pins, without the distinction between internal and external links. Due to the characteristics of its structure, in the current pin chain assembly process, the assembly tasks such as chain plate installation, pin insertion and pin pressing are mainly completed by manual work. On the one hand, the processing intensity is high and human resources are seriously wasted. On the other hand, the processing efficiency cannot meet the needs of production expansion.

[0004] The patent with publication number CN101676049B discloses an automatic assembly machine for pin-joined chains, which has a frame, a chain plate feeding mechanism, a chain plate positioning mechanism, a chain pin feeding and pin threading mechanism, a chain link transfer mechanism, a PLC automatic control system and a discharge plate; the chain plate feeding mechanism is composed of a double-column feeding cylinder and a feeding rod and a chain feeding plate arranged on the front side of the frame; the chain plate positioning mechanism is composed of a positioning cylinder and a positioning block arranged under the frame table. The machine realizes the mechanization, automation and continuity of chain production and assembly, but the assembly efficiency of the machine can no longer meet the growing demand for chain assembly, and its competitiveness has been greatly reduced. To this end, we propose an automatic assembly machine for pin-joined chains. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] In view of the shortcomings of the prior art, the present invention provides an automatic pin chain assembly machine, which overcomes the shortcomings of the prior art, has a reasonable design and a compact structure, and aims to solve the problem that the assembly process is mainly performed by manual work, on the one hand, the processing intensity is high and human resources are seriously wasted, and on the other hand, the processing efficiency cannot meet the needs of production expansion.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] An automatic assembly machine for a pin-joined chain comprises a pin-entry pre-pressing mechanism, a rivet head mechanism, a material buffer mechanism, a pre-tensioning mechanism, a pin-removing mechanism and a coil-discharging mechanism which are arranged in sequence from upstream to downstream along a pin-joined chain processing flow, wherein the pin-entry pre-pressing mechanism, the rivet head mechanism, the material buffer mechanism, the pre-tensioning mechanism, the pin-removing mechanism and the coil-discharging mechanism are conveyed for pin-joined chain processing via a chain conveying track, and a plurality of chain conveying units are alternately distributed on both sides of the chain conveying track;

[0010] The pin pre-pressing mechanism comprises a workbench I, the rear end and the front end of the workbench I are respectively provided with a feeding vibration plate for transmitting pins and a belt conveyor for transmitting chain links, and a pin feeding cylinder is provided on the output end of the feeding vibration plate, and a rear positioning cylinder is matched on the telescopic side of the pin feeding cylinder, and a chain link feeding cylinder is provided on the output end of the belt conveyor, and a front positioning cylinder is matched on the telescopic side of the chain link feeding cylinder, and a frame I is provided in the middle of the upper end of the workbench I, and a pin pressing cylinder is vertically installed on the frame I, and a pin pressing rod is provided on the output end of the pin pressing cylinder;

[0011] The rivet head mechanism comprises a workbench II, a frame II is arranged at the middle of the upper end of the workbench II, and a cylinder is vertically installed on the frame II, two upper rivet head blocks are installed on the telescopic end of the cylinder, two lower rivet head blocks are matched below the two upper rivet head blocks, and the lower rivet head blocks are installed on the upper end of the workbench II through a fixed seat;

[0012] The material caching mechanism includes a workbench III, a movable rotating wheel is provided at the middle of the upper end of the workbench III, the movable rotating wheel is rotatably mounted on the sliding seat, and the sliding seat is slidably connected to the upper end of the workbench III, a stepping screw is threadedly inserted in the middle of the sliding seat, and the stepping screw is installed on the upper end surface of the workbench III in a front-to-back direction through a screw rotating frame, a stepping motor is installed at one end of the stepping screw, and a forward in-position sensor and a backward in-position sensor are respectively installed at both ends of the stepping screw, fixed rotating wheels are symmetrically distributed on both sides of the movable rotating wheel, and the fixed rotating wheels are rotatably mounted on the upper end of the workbench III, and the side wall edges of the two fixed rotating wheels are symmetrically fitted on the edges of the chain conveyor track;

[0013] The pre-tensioning mechanism includes a workbench IV, the upper end of which is provided with a pre-tensioning fixed cylinder and a pre-tensioning movable cylinder in a vertical direction in sequence along the transmission direction of the pin-joined chain, a direct-pressure gas-liquid booster is installed at the lower end of the workbench IV, and a force sensor is installed at the output end of the direct-pressure gas-liquid booster, a connecting frame is installed at the output end of the direct-pressure gas-liquid booster, and the upper end of the connecting frame passes through the table surface of the workbench IV and is connected to the cylinder body of the pre-tensioning movable cylinder, and a pre-tensioning in-position sensor is provided at the upper end of the workbench IV corresponding to the side of the pre-tensioning movable cylinder away from the pre-tensioning fixed cylinder;

[0014] The pin removal mechanism comprises a workbench V, a frame III is mounted on the upper end of the workbench V corresponding to the middle of the chain conveyor track, and a disassembly cylinder is vertically mounted on the frame III, a pin removal rod is mounted on the output end of the disassembly cylinder, and a pin discharging slideway is installed through the workbench V corresponding to the position below the pin removal rod;

[0015] The disc material discharge mechanism includes a workbench VI, on which the output end of a chain conveyor track is provided, and a rotating disk matched with the output end of the chain conveyor track is rotatably installed at the upper end of the workbench VI, and a rotating disk motor for driving the rotating disk to rotate is installed in the middle of the lower end of the rotating disk, a discharge port opening and closing block is provided on the side of the upper end of the rotating disk away from the chain conveyor track, and the discharge port opening and closing block is installed on the output end of the discharge port opening and closing cylinder, a discharge push block is provided on the side of the upper end of the rotating disk away from the discharge port opening and closing block, and the discharge push block is installed on the output end of the discharge cylinder, and the discharge port opening and closing cylinder and the discharge cylinder are both installed on the surface of the workbench VI through a cylinder frame.

[0016] Preferably, a pre-pressing pin rod is installed on one side of the pressing pin rod through a fixing frame, and the height difference between the lower end surface of the pre-pressing pin rod and the lower end surface of the pressing pin rod is 2 to 4 mm.

[0017] Preferably, the chain transport unit includes a base platform, a transport cylinder is installed on the upper end of the base platform, and a movable platform is installed on the output end of the transport cylinder, the movable platform is slidably installed on the upper end of the base platform, and a chain engaging strip is vertically slidably inserted in the middle of the movable platform, an engaging movable cylinder is installed on the movable platform, and the telescopic end of the engaging movable cylinder is fixedly connected to the chain engaging strip through a connecting frame.

[0018] Preferably, an upper position sensor and a lower position sensor are respectively installed on the inner wall of the frame II at the heights of both ends corresponding to the stamping stroke of the upper rivet head block.

[0019] Preferably, a counting sensor II for counting chain links is installed on a section of the chain conveyor track located at the upper end of the workbench III.

[0020] Preferably, positioning slide bars extending in the same direction are symmetrically distributed on both sides of the stepping screw, and both positioning slide bars are fixedly mounted on the screw rotating frame, and the two positioning slide bars are slidably inserted on both sides of the sliding seat.

[0021] Preferably, it also includes an industrial computer for controlling the coordinated operation of the pin pre-pressing mechanism, the rivet head mechanism, the material buffer mechanism, the pre-tensioning mechanism, the pin removal mechanism, the coil discharge mechanism, the chain conveyor track and the chain transport unit, and the industrial computer has a built-in assembly system.

[0022] (III) Beneficial effects

[0023] The embodiment of the present invention provides a pin chain automatic assembly machine, which has the following beneficial effects:

[0024] 1. Through automated control, the pin pre-pressing mechanism, rivet head mechanism, material buffer mechanism, pre-tensioning mechanism, pin removal mechanism and coil discharge mechanism are coordinated and unified, effectively realizing the intelligent assembly of the pin-joined chain, saving human resources while greatly improving the chain production efficiency and assembly quality.

[0025] 2. Through the cyclic assembly of the pin pre-pressing mechanism, the rivet head mechanism, the material buffer mechanism, the pre-tensioning mechanism, the pin removal mechanism and the coiling discharge mechanism, the assembly tasks of the pin chain, such as feeding, rivet head, buffering, pre-tensioning, disassembly, and coiling, are completed, which fundamentally solves the defects existing in manual assembly, realizes the mechanization, automation and continuity of the production and assembly of the pin chain, improves the assembly efficiency, and the automated assembly tasks ensure the assembly accuracy of the pin chain and reduce the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The preferred implementation scheme will be described below in a clear and understandable manner in conjunction with the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of a pin chain automatic assembly machine.

[0027] Figure 1 It is a front view of the structure of the present invention;

[0028] Figure 2 It is a top view of the structure of the present invention;

[0029] Figure 3 It is a structural schematic diagram of the pin preloading mechanism in the present invention;

[0030] Figure 4 It is a top view of the structure of the pin preloading mechanism in the present invention;

[0031] Figure 5 It is a structural schematic diagram of the rivet head mechanism in the present invention;

[0032] Figure 6 It is a top view of the structure of the rivet head mechanism in the present invention;

[0033] Figure 7 It is a structural schematic diagram of the material buffer mechanism in the present invention;

[0034] Figure 8 It is a top view of the material buffer mechanism in the present invention;

[0035] Fig. 9 It is a structural schematic diagram of the pre-tensioning mechanism in the present invention;

[0036] Fig.10 It is a top view of the pre-tensioning mechanism in the present invention;

[0037] Fig.11It is a structural schematic diagram of the pin removal mechanism in the present invention;

[0038] Fig.12 It is a top view of the structure of the pin removal mechanism in the present invention;

[0039] Fig.13 It is a structural schematic diagram of the plate material discharging mechanism in the present invention;

[0040] Fig.14 It is a top view of the structure of the plate material discharging mechanism in the present invention;

[0041] Fig.15 A top view of the chain conveying unit of the present invention

[0042] Fig.16 It is a schematic diagram of the combined structure of the pin and the chain link in the present invention;

[0043] Fig.17 It is a top view of the finished product of the pinned chain of the present invention.

[0044] In the figure: pin-feeding pre-pressing mechanism 1, workbench I 100, feeding vibration plate 101, pin-feeding cylinder 102, belt conveyor 103, chain-link feeding cylinder 104, rear positioning cylinder 105, front positioning cylinder 106, pin-pressing cylinder 107, pin-pressing rod 108, pre-pressing pin rod 109;

[0045] Riveting head mechanism 2, workbench II 200, oil cylinder 201, upper riveting head block 202, lower riveting head block 203, upper in-position sensor 204, lower in-position sensor 205;

[0046] Material buffer mechanism 3, workbench III 300, stepper motor 301, fixed rotating wheel 302, movable rotating wheel 303, stepper screw 304, stepper motor forward position sensor 305, stepper motor backward position sensor 306, counting sensor I 307;

[0047] Pre-tensioning mechanism 4, workbench IV 400, direct pressure gas-liquid booster 401, force sensor 402, fixed cylinder before pre-tensioning 403, movable cylinder after pre-tensioning 404, counting sensor II 405, pre-tensioning in-position sensor 406;

[0048] Pin removal mechanism 5, workbench V 500, removal cylinder 501, pin removal rod 502, pin discharging slide 503;

[0049] Disk discharge mechanism 6, workbench VI 600, rotating disk motor 601, rotating disk 602, discharge port opening and closing cylinder 603, discharge cylinder 604, discharge port opening and closing block 605, chain conveyor track 7, pin 8, chain link 9, chain conveying unit 10, base table 1001, transport cylinder 1002, moving table 1003, chain engaging clamping strip 1004, engaging movable cylinder 1005, pinned chain a. DETAILED DESCRIPTION

[0050] The following is combined with Figure 1-12 The present invention is further described with examples:

[0051] Example 1

[0052] A pin chain automatic assembly machine, such as Figure 1-2 As shown, it includes a pin entry pre-pressing mechanism 1, a rivet head mechanism 2, a material buffer mechanism 3, a pre-tensioning mechanism 4, a pin removal mechanism 5 and a coil material discharge mechanism 6 which are arranged in sequence from upstream to downstream along the pinning chain a processing flow, and the pin entry pre-pressing mechanism 1, the rivet head mechanism 2, the material buffer mechanism 3, the pre-tensioning mechanism 4, the pin removal mechanism 5 and the coil material discharge mechanism 6 are conveyed through a chain conveying track 7 for pinning chain a processing, and a plurality of chain conveying units 10 are alternately distributed on both sides of the chain conveying track 7;

[0053] It also includes an industrial computer for controlling the coordinated operation of the pin pre-pressing mechanism 1, the rivet head mechanism 2, the material buffer mechanism 3, the pre-tensioning mechanism 4, the pin removal mechanism 5, the coil discharge mechanism 6, the chain conveyor track 7 and the chain transport unit 10, and the industrial computer has a built-in assembly system.

[0054] In this embodiment, Figure 3 and 4 As shown, the pin pre-pressing mechanism 1 comprises a workbench Ⅰ100, and a feeding vibration plate 101 for transmitting the pin 8 and a belt conveyor 103 for transmitting the chain link 9 are respectively distributed at the rear end and the front end of the workbench Ⅰ100, and a pin feeding cylinder 102 is provided on the output end of the feeding vibration plate 101, and a rear positioning cylinder 105 is matched on the telescopic side of the pin feeding cylinder 102, and a chain link feeding cylinder 104 is provided on the output end of the belt conveyor 103, and a front positioning cylinder 106 is matched on the telescopic side of the chain link feeding cylinder 104, and a frame Ⅰ is set up in the middle of the upper end of the workbench Ⅰ100, and a pin pressing cylinder 107 is vertically installed on the frame Ⅰ, and a pin pressing rod 108 is provided on the output end of the pin pressing cylinder 107;

[0055] The feeding vibration plate 101 stores the pin 8 and automatically vibrates the pin 8 to the position of the pin feeding cylinder 102. The chain link 9 is transported by the belt conveyor 103 to the position of the chain link feeding cylinder 104. The assembly system sends a start command to the chain link feeding cylinder 104, pushes the chain link 9 to the predetermined position and then returns, and then pushes another chain link 9. After two chain links 9 are in place and arranged regularly, the front positioning cylinder 106 starts to position the chain link 9, and the pin feeding cylinder mechanism 2 starts to send the pin 8 to the connecting hole of the chain link 9 and retreats. The rear positioning cylinder 105 then starts to position the chain link 9 firmly in the track, and the pin pressing cylinder 107 starts to slowly press the pin 7 into the hole of the chain link 10 through the pin pressing rod 108; the pin pressing cylinder 107 starts to return, and then the chain conveying unit 10 starts to send the chain with the completed rivet head to the next process through the chain conveying track 7.

[0056] In this embodiment, Figure 5 and 6 As shown, the riveting head mechanism 2 includes a workbench II 200, a frame II is set up in the middle of the upper end of the workbench II 200, and a cylinder 201 is vertically installed on the frame II, and two upper riveting head blocks 202 are installed on the telescopic end of the cylinder 201, and two lower riveting head blocks 203 are matched below the two upper riveting head blocks 202, and the lower riveting head blocks 203 are installed on the upper end of the workbench II 200 through a fixed seat;

[0057] The rivet head mechanism 2 receives the pin chain a delivered from the previous link, and passes it through the riveting position in the middle of the upper rivet head block 202 and the lower rivet head block 203, and starts the oil cylinder 201 to press down, so that the upper rivet head block 202 and the lower rivet head block 203 press the pin 8 and delay for 0.5 seconds to complete the riveting heads at both ends of the pin 8; the oil cylinder 201 starts to return, and then the chain conveying unit 10 starts to send the pin chain a completed by the rivet head to the next process through the chain conveying track 7.

[0058] In this embodiment, Figure 7 and 8 As shown, the material buffer mechanism 3 includes a workbench III300, a movable rotating wheel 303 is provided in the middle of the upper end of the workbench III300, the movable rotating wheel 303 is rotatably mounted on the sliding seat, and the sliding seat is slidably connected to the upper end of the workbench III300, a stepping screw 304 is threadedly inserted in the middle of the sliding seat, and the stepping screw 304 is installed on the upper end surface of the workbench III300 in a front-to-back direction through a screw rotating frame, a stepping motor 301 is installed at one end of the stepping screw 304, and a forward position sensor 305 and a backward position sensor 306 are respectively installed at both ends of the stepping screw 304, fixed rotating wheels 302 are symmetrically distributed on both sides of the movable rotating wheel 303, and the fixed rotating wheels 302 are rotatably mounted on the upper end of the workbench III300, and the side wall edges of the two fixed rotating wheels 302 are symmetrically fitted on the edges of the chain conveying track 7;

[0059] The material buffer mechanism 3 receives the pin chain a delivered from the previous link and stores it at this position, including a forward process and a backward process. During the forward process, the stepper motor 301 slowly advances according to the speed of the pin chain a delivered from the previous link, driving the movable wheel 303 to move backward. At the same time, the pin chain a is stored at this position under the rotation of the two fixed wheels 302; during the backward process, the stepper motor 301 stops advancing after sensing the in-position signal of the stepper motor forward in-position sensor 305 when advancing, and according to the operating speed of the subsequent process, the stepper motor 301 slowly drives the movable wheel 303 to retreat. When retreating to the in-position sensing signal of the stepper motor retreat in-position sensor 306, the stepper motor 301 stops retreating and returns to the forward process to continue material caching; the pin chain a is transported away through the chain conveying track 7, and the chain is sent to the next process under the signal feedback of the counting sensor I 307.

[0060] In this embodiment, Fig. 9 and 10 As shown, the pre-tensioning mechanism 4 includes a workbench IV400, and the upper end of the workbench IV400 is provided with a pre-tensioning fixed cylinder 403 and a pre-tensioning movable cylinder 404 in a vertical direction in sequence along the transmission direction of the pin chain a, and a direct pressure gas-liquid booster 401 is installed at the lower end of the workbench IV400, and a force sensor 402 is installed on the output end of the direct pressure gas-liquid booster 401, and a connecting frame is installed on the output end of the direct pressure gas-liquid booster 401, and the upper end of the connecting frame passes through the table surface of the workbench IV400 and is connected to the cylinder body of the pre-tensioning movable cylinder 404, and a pre-tensioning position sensor 406 is provided on the upper end of the workbench IV400 corresponding to the side of the pre-tensioning movable cylinder 404 away from the pre-tensioning fixed cylinder 403;

[0061] The pre-tensioning mechanism 4 receives the pin-joined chain a delivered from the previous link, and transports the pin-joined chain a according to the number of chain links required by the assembly system. After the pre-tensioning set number of links is met, the fixed cylinder 403 before pre-tensioning and the movable cylinder 404 after pre-tensioning start to position the pin-joined chain a, and the direct-pressure gas-liquid booster 1 starts to pre-tension the pin-joined chain a. After the force sensor 402 and the pre-tensioning position sensor 406 simultaneously meet the set values ​​of the assembly system, the direct-pressure gas-liquid booster 1, the fixed cylinder 2 before pre-tensioning and the movable cylinder 4 after pre-tensioning start to retract the telescopic end, and the chain transport unit 10 sends the pin-joined chain a to the next process through the chain conveying track 7.

[0062] In this embodiment, Fig.11 and 12As shown, the pin removal mechanism 5 includes a workbench V500, a frame III is mounted on the upper end of the workbench V500 corresponding to the middle position of the chain conveyor track 7, and a disassembly cylinder 501 is vertically mounted on the frame III, a pin removal rod 502 is mounted on the output end of the disassembly cylinder 501, and a pin discharging slide 503 is installed through the workbench V500 corresponding to the position below the pin removal rod 502;

[0063] The pin removal mechanism 5 receives the pinned chain a delivered from the previous link. The assembly system, based on the assembly system counting signal given by the front-end pre-tensioning mechanism 4, starts the disassembly cylinder 501 when the chain link 9 to be removed reaches the specified position. The pin removal rod 502 moves downward to press the pin out and drops through the pin discharge slide 503. Then the disassembly cylinder 501 starts to retract the chain conveying unit 10 and transport the chain to the next process through the chain conveying track 7.

[0064] In this embodiment, Fig.13 and 14 As shown, the plate material discharge mechanism 6 includes a workbench VI 600, on which the output end of the chain conveyor track 7 is provided, and a rotating disk 602 matching the output end of the chain conveyor track 7 is rotatably installed at the upper end of the workbench VI 600, and a rotating disk motor 601 for driving the rotating disk 602 to rotate is installed in the middle of the lower end of the rotating disk 602, and a discharge port opening and closing block 605 is provided on the side of the upper end of the rotating disk 602 away from the chain conveyor track 7, and the discharge port opening and closing block 605 is installed on the output end of the discharge port opening and closing cylinder 603, and a discharge propulsion block is provided on the side of the upper end of the rotating disk 602 away from the discharge port opening and closing block 605, and the discharge propulsion block is installed on the output end of the discharge cylinder 604, and the discharge port opening and closing cylinder 603 and the discharge cylinder 604 are both installed on the table of the workbench VI 600 through a cylinder frame;

[0065] The disc discharge mechanism 6 receives the pin chain a delivered from the previous link. The assembly system, based on the assembly system signal given by the front-end pin removal mechanism 5, transports the pin chain a to the rotating disk 602 through the chain conveyor track 7 and rotates under the power of the rotating disk motor 601, so that the pin chain a rotates counterclockwise and is coiled into a disc. Then the discharge port opening and closing cylinder 603 is started to open the discharge port opening and closing block 605, and then the discharge cylinder 604 is started to push the coiled chain disc out through the discharge push block, and the processing is cyclic to complete the assembly.

[0066] In this embodiment, Figure 3 As shown, a pre-compression pin rod 109 is installed on one side of the compression pin rod 108 through a fixing frame, and the height difference between the lower end surface of the pre-compression pin rod 109 and the lower end surface of the compression pin rod 108 is 2 to 4 mm. As the compression pin rod 108 descends, the pre-compression pin rod 109 pre-compresses the pin 8 synchronously, so that the lengths of the two ends of the pin 8 are the same.

[0067] In this embodiment, Fig.15 As shown, the chain conveying unit 10 includes a base platform 1001, a conveying cylinder 1002 is installed on the upper end of the base platform 1001, and a moving platform 1003 is installed on the output end of the conveying cylinder 1002, the moving platform 1003 is slidably installed on the upper end of the base platform 1001, and a chain engaging clip 1004 is vertically slidably inserted in the middle of the moving platform 1003, an engaging movable cylinder 1005 is installed on the moving platform 1003, and the telescopic end of the engaging movable cylinder 1005 is fixedly connected to the chain engaging clip 1004 through a connecting frame, when it is necessary to convey the pin-joined chain a, the engaging movable cylinder 1005 is started, and the chain engaging clip 1004 is pushed to approach and insert into the chain groove of the pin-joined chain a transmitted in the chain conveying track 7, and the starting recovery of the conveying cylinder 1002 is cooperated to pull the pin-joined chain a for conveying.

[0068] In this embodiment, Figure 5 and 6 As shown, an upper position sensor 204 and a lower position sensor 205 are respectively installed on the inner wall of the frame II at the heights of both ends of the punching stroke of the upper rivet head block 202. The assembly system is convenient for accurately controlling the punching rivet head stroke of the cylinder 201 through the induction of the upper position sensor 204 and the lower position sensor 205 to ensure the assembly of the pin chain a.

[0069] In this embodiment, Fig. 9 and 10 As shown, the chain conveyor track 7 is located at a section at the upper end of the workbench III 300 and is equipped with a counting sensor II 405 for counting the chain links 9. According to the number of links required by the entire assembly system, the pin chain a is fixed front and back, and the pre-tensioning mechanism is started so that the total length of the pin chain a reaches the specified requirement at the specified number of links.

[0070] Example 2

[0071] The difference between this embodiment and embodiment 1 is that Figure 8 As shown, positioning slide bars extending in the same direction are symmetrically distributed on both sides of the stepping screw 304, and the two positioning slide bars are fixedly mounted on the screw rotating frame, and the two positioning slide bars are slidably inserted on both sides of the sliding seat, which effectively ensures the forward and backward sliding of the movable wheel 303 and the operation of the forward and backward processes in the material buffer mechanism 3.

[0072] For other structures not described, refer to Example 1.

[0073] According to the pin-joined chain automatic assembly machine of the above embodiment of the present invention, after the feeding vibration plate 101 automatically delivers the pin 88 and the belt conveyor 103 automatically delivers the chain link 99 to the designated position, after the assembly system receives the signal that the material is in place, the assembly system starts the action instruction, so that the pin 8 and the chain link 9 are automatically assembled and assembled, and the pin 8 is pre-pressed, and so on, the assembly is continuously performed on the basis of no shortage of materials, and the semi-finished chain after assembly and pre-pressing is automatically counted from the first one according to the required number of links, and then sent to the riveting head station;

[0074] After the riveting head station obtains the material induction, the riveting head process is immediately started, and the production actions of the riveting head process are automatically and continuously performed. At the same time, according to the chain section number requirements of the assembly system design, after completing the number of links of a chain, the riveting head work of the next link is stopped, and the chain is continuously and automatically sent to the material buffer area and pre-tensioning station before pre-tensioning;

[0075] Pre-tensioning is a process action to meet the length requirement of the product after the rivet head is assembled at the specified number of sections. After the assembly system receives the material induction, the station fixes the chain front and back according to the number of sections required by the assembly system in advance, and starts the pre-tensioning mechanism to make the total length of the chain reach the specified requirement at the specified number of sections;

[0076] After completing the pre-tensioning process, the equipment continues to automatically send the chain to the pin removal station. After obtaining the material induction, the station automatically counts the number of links of each chain according to the counting requirements of the assembly system design, removes the pins 8 that have not been riveted under the pressure of multiple cylinders, and automatically transfers them to the next process station, that is, the coiling station;

[0077] The coiling station coils the chain unloaded from the previous station on the rotating disk 602. After completion, the discharging and pushing mechanisms are automatically started to push out the coiled chain, completing the automated assembly of the pin-joined chain a. The assembled chain products are then transported and collected by employees.

[0078] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A pin chain automatic assembly machine, characterized in that: The invention comprises a pin entry pre-pressing mechanism (1), a rivet head mechanism (2), a material buffer mechanism (3), a pre-tensioning mechanism (4), a pin removal mechanism (5) and a coil material discharge mechanism (6) which are arranged in sequence from upstream to downstream along the pin-joining chain processing flow, wherein the pin entry pre-pressing mechanism (1), the rivet head mechanism (2), the material buffer mechanism (3), the pre-tensioning mechanism (4), the pin removal mechanism (5) and the coil material discharge mechanism (6) are conveyed for pin-joining chain processing via a chain conveying track (7), and a plurality of chain conveying units (10) are alternately arranged on both sides of the chain conveying track (7); The pin pre-pressing mechanism (1) comprises a workbench I (100), wherein a feeding vibration plate (101) for transmitting pins (8) and a belt conveyor (103) for transmitting chain links (9) are respectively arranged at the rear end and the front end of the workbench I (100), and a pin feeding cylinder (102) is arranged at the output end of the feeding vibration plate (101), and a rear positioning cylinder (105) is matched with the telescopic side of the pin feeding cylinder (102), and a chain link feeding cylinder (104) is arranged at the output end of the belt conveyor (103), and a front positioning cylinder (106) is matched with the telescopic side of the chain link feeding cylinder (104), and a frame I is arranged at the middle part of the upper end of the workbench I (100), and a pin pressing cylinder (107) is vertically installed on the frame I, and a pin pressing rod (108) is arranged at the output end of the pin pressing cylinder (107); The rivet head mechanism (2) comprises a workbench II (200), a frame II is mounted in the middle of the upper end of the workbench II (200), and a cylinder (201) is vertically mounted on the frame II, two upper rivet head blocks (202) are mounted on the telescopic end of the cylinder (201), two lower rivet head blocks (203) are matched below the two upper rivet head blocks (202), and the lower rivet head blocks (203) are mounted on the upper end of the workbench II (200) via a fixing seat; The material buffer mechanism (3) comprises a workbench III (300), wherein a movable rotating wheel (303) is provided at the middle of the upper end of the workbench III (300), the movable rotating wheel (303) is rotatably mounted on a sliding seat, and the sliding seat is slidably connected to the upper end of the workbench III (300), a stepping screw (304) is threadedly inserted in the middle of the sliding seat, and the stepping screw (304) is mounted on the upper end surface of the workbench III (300) in a front-to-back direction through a screw rotating frame, a stepping motor (301) is mounted at one end of the stepping screw (304), and a forward position sensor (305) and a backward position sensor (306) are respectively mounted at both ends of the stepping screw (304), fixed rotating wheels (302) are symmetrically distributed on both sides of the movable rotating wheel (303), and the fixed rotating wheels (302) are rotatably mounted on the upper end of the workbench III (300), and the side wall edges of the two fixed rotating wheels (302) are symmetrically fitted on the edges of the chain conveying track (7); The pre-tensioning mechanism (4) comprises a workbench IV (400), the upper end of the workbench IV (400) is provided with a pre-tensioning front fixed cylinder (403) and a pre-tensioning rear movable cylinder (404) in sequence and vertically along the transmission direction of the pin-joined chain, the lower end of the workbench IV (400) is provided with a direct pressure gas-liquid booster (401), and a force sensor (402) is provided on the output end of the direct pressure gas-liquid booster (401), a connecting frame is provided on the output end of the direct pressure gas-liquid booster (401), and the upper end of the connecting frame passes through the table surface of the workbench IV (400) and is connected to the cylinder body of the pre-tensioning rear movable cylinder (404), and a pre-tensioning position sensor (406) is provided on the upper end of the workbench IV (400) corresponding to the side of the pre-tensioning rear movable cylinder (404) away from the pre-tensioning front fixed cylinder (403); The pin removal mechanism (5) comprises a workbench V (500), a frame III is mounted on the upper end of the workbench V (500) corresponding to the middle of the chain conveyor track (7), a disassembly cylinder (501) is vertically mounted on the frame III, a pin removal rod (502) is mounted on the output end of the disassembly cylinder (501), and a pin discharging slideway (503) is installed through the workbench V (500) at a position below the pin removal rod (502); The plate material discharge mechanism (6) comprises a workbench VI (600), on which the output end of the chain conveyor track (7) is provided, and a rotating disk (602) which cooperates with the output end of the chain conveyor track (7) is rotatably mounted on the upper end of the workbench VI (600), and a rotating disk motor (601) for driving the rotating disk (602) to rotate is mounted in the middle of the lower end of the rotating disk (602), and the upper end of the rotating disk (602) is away from the chain conveyor track ( 7) is provided with a discharge port opening and closing block (605) on one side, and the discharge port opening and closing block (605) is installed on the output end of the discharge port opening and closing cylinder (603); a discharge pushing block is provided on the side of the upper end of the rotating disk (602) away from the discharge port opening and closing block (605), and the discharge pushing block is installed on the output end of the discharge cylinder (604); the discharge port opening and closing cylinder (603) and the discharge cylinder (604) are both installed on the table surface of the workbench VI (600) through a cylinder frame; An upper position sensor (204) and a lower position sensor (205) are respectively installed on the inner wall of the frame II at the heights corresponding to the two ends of the punching stroke of the upper rivet head block (202); a counting sensor II (405) for counting the chain links (9) is installed on a section of the chain conveying track (7) located at the upper end of the workbench III (300); It also includes an industrial computer for controlling the coordinated operation of a pin insertion pre-pressing mechanism (1), a rivet head mechanism (2), a material buffer mechanism (3), a pre-tensioning mechanism (4), a pin removal mechanism (5), a coil material discharge mechanism (6), a chain conveyor track (7) and a chain transport unit (10), and the industrial computer has an assembly system built in it.

2. The automatic pin-joint chain assembly machine according to claim 1, characterized in that: A pre-pressing pin rod (109) is mounted on one side of the pressing pin rod (108) via a fixing frame, and a height difference between a lower end surface of the pre-pressing pin rod (109) and a lower end surface of the pressing pin rod (108) is 2 to 4 millimeters.

3. The automatic pin-joint chain assembly machine according to claim 1, characterized in that: The chain conveying unit (10) comprises a base platform (1001), a conveying cylinder (1002) is installed on the upper end of the base platform (1001), and a moving platform (1003) is installed on the output end of the conveying cylinder (1002), the moving platform (1003) is slidably installed on the upper end of the base platform (1001), and a chain engaging clip (1004) is vertically slidably inserted in the middle of the moving platform (1003), an engaging movable cylinder (1005) is installed on the moving platform (1003), and the telescopic end of the engaging movable cylinder (1005) is fixedly connected to the chain engaging clip (1004) via a connecting frame.

4. The automatic pin-joint chain assembly machine according to claim 1, characterized in that: Positioning slide bars extending in the same direction are symmetrically distributed on both sides of the stepping screw (304), and both positioning slide bars are fixedly mounted on the screw rotating frame, and the two positioning slide bars are slidably inserted on both sides of the sliding seat.

Images