Length-limiting tensioning equipment for chain machining and manufacturing

Abstract

The invention discloses length-limiting tensioning equipment for chain machining and manufacturing, and relates to the technical field of chain machining and manufacturing. The length-limiting tensioning equipment comprises a pre-assembling table, an assembling mechanism, a discharging table and a grouping mechanism which are linearly and sequentially distributed in the machining procedure direction through a rack. According to the length-limiting tensioning equipment for chain machining and manufacturing, by arranging the pre-assembling table, an operator can assemble a plurality of chain rings and a plurality of connecting accessories into a semi-finished chain of a linear structure in advance, the pre-assembling table is matched with the feeding mechanism, continuous and automatic assembling can be conveniently carried out in the follow-up process in cooperation with the assembling mechanism, and meanwhile by means of the length-limiting calibration assembly, the production efficiency is improved. The length of the chain can be limited in the assembling link, errors caused by subsequent manual counting are avoided, limiting conveying of semi-finished chains and finished chains is facilitated by arranging the feeding mechanism and the discharging table, continuous production and rapid output of the chains are ensured, and the assembling efficiency is improved by arranging the assembling mechanism, the positioning mechanism and the automatic feeding mechanism. And the semi-finished chain and the chain plate can be automatically assembled.

Description

Technical Field

[0001] The invention relates to the technical field of chain processing and manufacturing, in particular to a length-limiting tensioning device for chain processing and manufacturing. Background Art

[0002] In the manufacturing process of large roller chains, the connection of chain links is one of the key steps. The traditional method is to place a chain plate at the bottom between two chain links, and then use a punch to assemble two pins to the chain plate. After completing this step, another chain plate is placed on the two pins, and the chain plate is assembled on the two pins by a punch to complete the connection of the two chain links. This method requires the punch to perform two punching operations. When faced with large roller chains, the operation complexity and time consumption are significantly increased.

[0003] In order to improve production efficiency and simplify the operation process, the industry began to explore new assembly methods. One improved technology is Figure 1 As shown, the connecting accessories are assembled at the beginning of manufacturing. In this way, in the subsequent assembly process, it is only necessary to assemble the chain plate on the top of the two pin shafts and complete the connection by a single punching with the help of a punch press. This method simplifies the assembly process to a certain extent and reduces the complexity of the operation.

[0004] In the process of implementing the present invention, the inventors found that there are at least the following problems in the prior art:

[0005] Although the above-mentioned improved technologies have improved the manufacturing efficiency of large roller chains to a certain extent, operators still need to assemble multiple chain links in sequence, which leads to frequent manual operations. The degree of automation is still low, and the length cannot be limited. The operation link is often manually counted to calculate the chain length.

[0006] Secondly, for the assembled chain, workers are often required to pull it manually to facilitate the subsequent tooling of the chain links. This process is not only inefficient, but also increases the labor burden of the operators. Especially in a large-scale production environment, this manual operation method obviously cannot meet the needs of efficient and fast production.

[0007] Therefore, the above technical problems need to be solved. Summary of the invention

[0008] In order to overcome the deficiencies of the prior art, the present invention provides a length-limiting tensioning device for chain processing and manufacturing, which solves the problems raised in the above-mentioned background technology.

[0009] In order to solve the above technical problems, the basic technical solution proposed by the present invention is:

[0010] A length-limiting tensioning device for chain processing and manufacturing, comprising:

[0011] The pre-assembly table is composed of a feeding mechanism and a length limit calibration component, and is used for the preliminary assembly and length limitation of a plurality of chain links and a plurality of connecting accessories, as well as for feeding.

[0012] The assembly mechanism is a subsequent process equipment closely connected with the pre-assembly table, which is used to receive and process the semi-finished chain that has been initially assembled and transmitted by the pre-assembly table, and complete the automatic assembly conversion from the semi-finished chain to the finished chain.

[0013] The discharge table is a subsequent process equipment connected to the assembly mechanism and is used for the orderly output of the finished product chain.

[0014] The grouping mechanism is a subsequent processing unit closely connected to the discharge table, which is used to wind the assembled and output finished chains in a predetermined manner to form a compact and regular chain group.

[0015] Preferably, the feeding mechanism includes two side plates and a double-row synchronous conveyor belt assembled therebetween, and a servo motor arranged on the outer side of one of the side plates for driving the double-row synchronous conveyor belt. The inner sides of the two side plates are provided with support plates for supporting the double-row synchronous conveyor belt.

[0016] Preferably, the length limit calibration assembly includes two profiles which are parallel to each other and are respectively fixedly mounted on the top of two side plates, a gap is reserved between the two profiles for accommodating the chain links and connecting accessories, and a laser ranging sensor transmitting end and a laser ranging sensor receiving end which are arranged oppositely are respectively installed on both sides of the top of one of the profiles through L-shaped plates.

[0017] Preferably, the assembly mechanism includes a workbench and a positioning mechanism mounted on the workbench for clamping and fixing two chain links and connecting accessories inserted between the two chain links, as well as a punch mounted on a lifting frame above the workbench and an automatic loading mechanism arranged on one side of the workbench for feeding the chain pieces one by one and continuously.

[0018] Preferably, the positioning mechanism includes two symmetrically distributed clamping seats that are slidably assembled on both sides of the top of the workbench through linear guide rails, and a double-headed double-outlet air cylinder that is laterally fixedly installed on the bottom of the workbench. Connecting rods distributed in the vertical direction are fixedly installed on the two output ends of the double-headed double-outlet air cylinder. The top ends of the two connecting rods pass through the workbench and are fixedly connected to the outer sides of the two clamping seats, respectively. Two strip holes are provided on the workbench for the connecting rods to fit through.

[0019] Preferably, a limit groove distributed in the length direction of the feeding mechanism is opened in the middle of the top surface of the workbench, and expansion structures are provided on both sides of the limit groove. An arc-shaped groove distributed along its length direction is opened in the middle of the bottom surface of the limit groove, and two photoelectric sensors are installed on one side of the arc-shaped groove.

[0020] Preferably, the automatic feeding mechanism includes a material box for accommodating a plurality of chain plates that are adapted to overlap and fit above the clamping seat through two vertical frames, a material guide trough provided at the inner bottom of the material box for limiting the conveying of a single chain plate, and a material pushing assembly provided at the outer bottom of the material box for the movement of a single chain plate. A baffle is encapsulated on the side of the material guide trough away from the material box, and a notch is reserved between the baffle and the port of the material guide trough for the chain plate to fall. An arc column is provided in the middle of the inner side of the baffle for the side of the chain plate to fit closely.

[0021] Preferably, the pushing assembly includes a fixed plate and a pushing cylinder vertically installed on the outside of the fixed plate, the output end of the pushing cylinder passes through the fixed plate and is fixedly installed with a fixed seat, and the inner side of the top of the fixed seat is hinged to the flap through a torsion spring accessory.

[0022] Preferably, the discharge table includes two symmetrically distributed side frames, and a number of short shafts evenly distributed at equal distances along the length direction are vertically fixedly installed on the bottom of the inner sides of the two side frames, and rollers are rotatably installed on the outside of the several short shafts, and a shaft is vertically rotatably installed on the top of one of the side frames near the output end, and a sprocket is fixedly installed on the bottom end of the shaft, and the sprocket passes through the side frame and meshes with the finished product chain, and a handwheel is fixedly installed on the top end of the shaft.

[0023] Preferably, the grouping mechanism includes a table top and a forming frame fixedly mounted on the top of the table top and having a planar spiral gradient circular structure, and a supporting plate movably embedded in the table top through a lifting cylinder, and a discharge chute is fixedly mounted on the frame behind the table top.

[0024] The beneficial effects of the present invention are:

[0025] 1. By setting up a pre-assembly table, the operator can pre-assemble several chain links and several connecting accessories into a semi-finished chain with a linear structure, and cooperate with the feeding mechanism to facilitate the subsequent continuous automatic assembly with the assembly mechanism. At the same time, with the help of the length limit calibration component, the length of the chain can be limited in the assembly link, avoiding the error of subsequent manual counting.

[0026] 2. The feeding mechanism and the discharging platform are provided to facilitate the limited conveying of semi-finished chains and finished chains, thus ensuring the continuous production and rapid output of the chains and significantly improving the production efficiency.

[0027] 3. By setting up an assembly mechanism, with the help of a positioning mechanism and an automatic feeding mechanism, the automatic assembly of semi-finished chains and chain plates can be achieved, which significantly improves the degree of automation and reduces the labor intensity of operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the assembly structure of the chain processing;

[0029] Figure 2 It is a structural schematic diagram of the present invention;

[0030] Figure 3 It is a structural schematic diagram of the preassembly platform of the present invention;

[0031] Figure 4 It is a structural schematic diagram of the positioning mechanism of the present invention;

[0032] Figure 5 It is a structural schematic diagram of the tooling table of the present invention;

[0033] Figure 6 It is a structural schematic diagram of the automatic feeding mechanism of the present invention;

[0034] Figure 7 It is a structural schematic diagram of the pusher assembly of the present invention;

[0035] Figure 8 It is a structural schematic diagram of the flap of the present invention;

[0036] Fig. 9 It is a structural schematic diagram of the discharging platform of the present invention;

[0037] Fig.10 It is a structural schematic diagram of the grouping mechanism of the present invention;

[0038] Description of reference numerals:

[0039] 100, rack;

[0040] 200, pre-assembly table;

[0041] 210. Feeding mechanism; 220. Length limit calibration component;

[0042] 2110, side plate; 2120, double-row synchronous conveyor belt; 2130, servo motor; 2140, support plate;

[0043] 2210, profile; 2220, L-shaped plate; 2230, laser distance sensor transmitting end; 2240, laser distance sensor receiving end;

[0044] 300, assembly mechanism;

[0045] 310, tooling table; 320, positioning mechanism; 330, punch; 340, automatic feeding mechanism;

[0046] 3110, strip-shaped hole; 3120, limiting groove; 3130, flaring structure; 3140, arc-shaped groove; 3150, photoelectric sensor;

[0047] 3210, linear guide rail; 3220, clamping seat; 3230, double-head double-outlet cylinder; 3240, connecting rod;

[0048] 3410, stand; 3420, material box; 3430, material guide trough; 3440, baffle; 3450, arc column; 3460, material pusher assembly;

[0049] 3461, fixed plate; 3462, push cylinder; 3463, fixed seat; 3464, flap;

[0050] 400, discharging platform;

[0051] 410, side frame; 420, short shaft; 430, roller; 440, shaft; 450, sprocket; 460, hand wheel;

[0052] 500, group organization;

[0053] 510, table top; 520, forming frame; 530, lifting cylinder; 540, supporting plate; 550, unloading chute. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] See also Figure 2 and Figure 3 The present invention provides a technical solution: a length-limiting tensioning device for chain processing and manufacturing, comprising:

[0056] The pre-assembly station 200, which is composed of a feeding mechanism 210 and a length limiting calibration assembly 220, is used for the preliminary assembly and length limiting of a plurality of chain links and a plurality of connecting accessories, as well as for feeding.

[0057] The assembly mechanism 300 is a subsequent process equipment closely connected with the pre-assembly station 200, which is used to receive and process the semi-finished chain that has been initially assembled and transmitted by the pre-assembly station 200, and complete the automatic assembly conversion from the semi-finished chain to the finished chain.

[0058] The discharging platform 400 is a subsequent process equipment connected to the assembly mechanism 300 and is used for orderly discharging of the finished product chain.

[0059] The grouping mechanism 500 is a subsequent processing unit closely connected to the discharging platform 400, and is used to wind the assembled and output finished product chains in a predetermined manner to form a compact and regular chain group.

[0060] Based on the above-mentioned structural setting, the chain processing and manufacturing length-limiting tensioning equipment is composed of a frame 100, a pre-assembly table 200, an assembly mechanism 300, a discharge table 400 and a grouping mechanism 500, wherein the pre-assembly table 200, the assembly mechanism 300, the discharge table 400 and the grouping mechanism 500 are arranged in sequence along the processing direction, and the frame 100 provides structural support for the above-mentioned process unit equipment, the pre-assembly table 200 is mainly used for assembling semi-finished product chains and conveying them backward in a linear layout, the assembly mechanism 300 is used for automating the assembly of semi-finished product chains, and the assembled finished product chains are discharged from the discharge table 400. 00 is output in a linear layout, and is finally wound into groups and unloaded through the grouping mechanism 500. Specifically, during the working process, the operator first assembles the semi-finished chain in the feeding mechanism 210. When the assembled length of the semi-finished chain reaches the preset value of the limit length calibration component 220, the assembly is stopped and the feeding mechanism 210 is started. When two adjacent chain links are transported to the specified position on the tooling table 310, the feeding mechanism 210 pauses, and the positioning mechanism 320 clamps and fixes the two chain links and the connecting accessories. Subsequently, the automatic feeding mechanism 340 pushes a chain plate to the top of the connecting accessory and punches it through the punch 330. After the two chain links are connected by stamping assembly, the positioning mechanism 320 is reset, and the feeding mechanism 210 continues to move to complete the backward conveying of the two connected chain links, until the two subsequent unconnected chain links are conveyed to the specified position on the tooling table 310, and the above actions are repeated. The finished chain is conveyed backward through the discharge table 400, and can be wound into groups and unloaded and output through the grouping mechanism 500. The length-limited tensioning equipment for chain processing and manufacturing is provided with a pre-assembly table 200, so that the operator can pre-assemble several chain links and several connecting accessories into a semi-finished chain with a linear structure, and cooperate with the feeding mechanism 210 to facilitate subsequent assembly The assembly mechanism 300 is combined for continuous automatic assembly. At the same time, with the help of the length limit calibration component 220, the length of the chain can be limited in the assembly process, avoiding errors in subsequent manual counting. The feeding mechanism 210 and the discharge table 400 are provided to facilitate the limited transportation of semi-finished chains and finished chains, ensuring the continuous production and rapid output of the chains, and significantly improving the production efficiency. The assembly mechanism 300 is provided, with the help of the positioning mechanism 320 and the automatic loading mechanism 340, the automatic assembly of the semi-finished chains and chain plates can be achieved, significantly improving the degree of automation and reducing the labor intensity of the operators.

[0061] For further information, see Figure 3 The feeding mechanism 210 includes two side plates 2110 and a double-row synchronous conveyor belt 2120 mounted therebetween, and a servo motor 2130 provided on the outer side of one of the side plates 2110 for driving the double-row synchronous conveyor belt 2120. The inner sides of the two side plates 2110 are provided with a support plate 2140 for supporting the double-row synchronous conveyor belt 2120. The connecting fittings are assembled on the chain plate by two pins, the bottom ends of the two pins pass through the chain plate and the ends are reserved below the chain plate. By adopting the double-row synchronous conveyor belt 2120, a space for accommodating the bottom ends of the pins can be reserved in the middle of the conveyor belt, thereby ensuring the stable transportation of the semi-finished chain.

[0062] For further information, see Figure 3 The length limit calibration assembly 220 includes two profiles 2210 which are parallel to each other and fixedly mounted on the top of the two side plates 2110 respectively. A gap is reserved between the two profiles 2210 for accommodating the chain links and connecting accessories. In addition, a laser ranging sensor transmitting end 2230 and a laser ranging sensor receiving end 2240 which are arranged oppositely are respectively mounted on both sides of the top of one of the profiles 2210 through an L-shaped plate 2220. Among them, the distance between the laser ranging sensor transmitting end 2230 and the laser ranging sensor receiving end 2240 is the preset chain assembly length. Since the large chain has large dimensions, in the assembly of the semi-finished chain, the operator only needs to ensure that the assembly length is roughly aligned with the measured distance, and can judge by observation whether the assembly length reaches the preset value. Preferably, the L-shaped plate 2220 is assembled on the profile 2210 by bolts. In actual applications, the operator can flexibly adjust the distance between the laser ranging sensor transmitting end 2230 and the laser ranging sensor receiving end 2240 to calibrate the length limit of the assembled chain at different lengths.

[0063] For further information, see Figure 2 , Figure 4 and Figure 6 The assembly mechanism 300 includes a tooling table 310 and a positioning mechanism 320 mounted on the tooling table 310 for clamping and fixing two chain links and the connecting accessories inserted between the two chain links, a punch 330 mounted on a lifting frame above the tooling table 310, and an automatic feeding mechanism 340 mounted on one side of the tooling table 310 for feeding chain pieces one by one and continuously. The assembly mechanism 300 is composed of the tooling table 310, the positioning mechanism 320, the punch 330 and the automatic feeding mechanism 340.

[0064] For further information, see Figure 2 and Figure 5The positioning mechanism 320 includes two clamping seats 3220 that are symmetrically distributed and are respectively slidably assembled on both sides of the top of the tooling table 310 through linear guide rails 3210, and a double-headed double-outlet cylinder 3230 that is horizontally fixedly installed at the bottom of the tooling table 310. The two output ends of the double-headed double-outlet cylinder 3230 are fixedly installed with connecting rods 3240 distributed in the vertical direction. The top ends of the two connecting rods 3240 penetrate the tooling table 310 and are respectively fixedly connected to the outer side surfaces of the two clamping seats 3220. The tooling table 310 is provided with two bar-shaped holes 3110 for the connecting rods 3240 to fit through. Among them, the two output ends of the double-headed double-outlet cylinder 3230 extend or retract synchronously. When the tooling action is performed, the two output ends of the double-headed double-outlet cylinder 3230 retract. With the help of the connecting rods 3240, the two clamping seats 3220 approach each other along the linear slide rail, and the two chain links and connecting accessories can be clamped and positioned.

[0065] For further information, see Figure 5 A limiting groove 3120 distributed in the length direction of the feeding mechanism 210 is opened in the middle of the top surface of the workbench 310, and a flaring structure 3130 is provided on both sides of the limiting groove 3120, and an arc-shaped groove 3140 distributed along its length direction is opened in the middle of the bottom surface of the limiting groove 3120, and two photoelectric sensors 3150 are installed on one side of the arc-shaped groove 3140. Among them, the bar hole 3110 provides space for the movement of the connecting rod 3240, the limit groove 3120 is connected to the output end of the feeding mechanism 210, and the setting of the expansion structure 3130 is conducive to the input of the semi-finished chain and the output of the finished chain. Similarly, the design of the arc groove 3140 provides an accommodating space for the bottom end of the pin shaft. It should be noted that the two photoelectric sensors 3150 are used to monitor the chain plate located at the bottom of the semi-finished chain. When the chain plate connecting the accessories is arranged in the center, the two chain links reach the specified position on the workbench 310. At this time, the two photoelectric sensors 3150 feedback the detection signal, the feeding mechanism 210 suspends the action, and the positioning mechanism 320 executes the action.

[0066] For further information, see Figure 6The automatic feeding mechanism 340 includes a material box 3420 for accommodating a plurality of chain plates by two upright frames 3410 erected above the clamping seat 3220, and a material guide trough 3430 provided at the inner bottom of the material box 3420 for limiting the conveying of a single chain plate, and a material pushing assembly 3460 provided at the outer bottom of the material box 3420 for the movement of a single chain plate. A baffle 3440 is encapsulated on the side of the material guide trough 3430 away from the material box 3420, and a notch for the chain plate to fall is reserved between the baffle 3440 and the port of the material guide trough 3430, and an arc column 3450 is provided in the middle of the inner side of the baffle 3440 for the side of the chain plate to fit and fit. Among them, several chain plates are stacked and placed in the material trough, and cooperate with the material guide trough 3430. Under the action of the pushing assembly 3460, only the bottom chain plate can be pushed to the slot at a time. The chain plate falls on the two pin shafts through the arc column 3450. Under the subsequent stamping of the punch 330, the chain plate and the connecting accessories can be assembled.

[0067] For further information, see Figure 7 and Figure 8 The pushing assembly 3460 includes a fixed plate 3461 and a pushing cylinder 3462 vertically installed on the outside of the fixed plate 3461. The output end of the pushing cylinder 3462 passes through the fixed plate 3461 and is fixedly installed with a fixed seat 3463. The inner side of the top of the fixed seat 3463 is hinged to the flap 3464 through a torsion spring accessory. Among them, the pushing component 3460 realizes continuous loading one by one with the help of the reciprocating motion of the pushing cylinder 3462, mainly with the help of the flap 3464 hinged to the top of the fixed seat 3463 through the torsion spring fittings. Specifically, during the contraction of the pushing cylinder 3462, when the flap 3464 contacts the chain plate, the flap 3464 flips until the pushing cylinder 3462 completes the resetting. At this time, the flap 3464 is reset under the torsion spring fittings. When the output end of the pushing cylinder 3462 extends outward and the flap 3464 contacts the chain plate, the flap 3464 cannot flip, and the bottom chain plate can be pushed along the guide groove 3430.

[0068] For further information, see Fig. 9The discharge table 400 includes two symmetrically distributed side frames 410, and a number of short shafts 420 evenly distributed along the length direction are vertically fixedly installed at the bottom of the inner side of the two side frames 410, and rollers 430 are rotatably installed on the outside of the several short shafts 420. A shaft rod 440 is vertically rotatably installed at the top of one of the side frames 410 near the output end, and a sprocket 450 is fixedly installed at the bottom end of the shaft rod 440. The sprocket 450 passes through the side frame 410 and meshes with the finished product chain, and a hand wheel 460 is fixedly installed at the top of the shaft rod 440. Among them, a gap is also reserved between the two rows of rollers 430 for accommodating the bottom end of the pin shaft, so as to facilitate the stable transportation of the finished chain. In the early stage, with the action of the feeding mechanism 210, the finished chain can be transported backward along the discharge table 400. When the semi-finished chain is fully assembled in the later stage, the feeding mechanism 210 no longer provides drive for the backward transportation of the finished chain, and the operator can continue to transport the finished chain backward through the hand wheel 460 with the help of the sprocket 450.

[0069] For further information, see Fig.10 The grouping mechanism 500 includes a table 510 and a forming frame 520 fixedly installed on the top of the table 510 and having a flat spiral gradient circular structure, and a supporting plate 540 movably embedded in the table 510 through a lifting cylinder 530. A discharge chute 550 is fixedly installed behind the table 510 and located on the frame 100. The grouping mechanism 500 guides the finished chain conveyed backward with the help of the forming frame 520, so that it is wound into groups for subsequent overall transportation or processing. The grouped chains can be separated from the forming frame 520 as the supporting plate 540 descends to the bottom of the table 510 through the lifting mechanism. At this time, the operator can take out the grouped finished chains through the discharge chute 550.

[0070] According to the disclosure and teaching of the above description, those skilled in the art to which the present invention belongs may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the present invention.

Claims

1. A length-limiting tensioning device for chain processing and manufacturing, characterized in that: The invention comprises the following parts which are linearly distributed in a processing direction through a frame (100): The pre-assembly station (200) is composed of a feeding mechanism (210) and a length limit calibration assembly (220), and is used for preliminary assembly and length limitation of a plurality of chain links and a plurality of connecting accessories, as well as feeding; The assembly mechanism (300) is a subsequent process equipment closely connected with the pre-assembly station (200), used to receive and process the semi-finished chain that has been initially assembled and transmitted by the pre-assembly station (200), and complete the automatic assembly conversion from the semi-finished chain to the finished chain; The discharging platform (400) is a subsequent process equipment connected to the assembly mechanism (300) and is used for orderly discharging of finished product chains; The grouping mechanism (500) is a subsequent processing unit closely connected to the discharging platform (400), and is used to wind the assembled and output finished product chains in a predetermined manner to form a compact and regular chain group.

2. The chain length limiting and tensioning device for chain processing and manufacturing according to claim 1, characterized in that: The feeding mechanism (210) comprises two side plates (2110) and a double-row synchronous conveyor belt (2120) mounted therebetween, and a servo motor (2130) arranged on the outer side of one of the side plates (2110) for driving the double-row synchronous conveyor belt (2120), and support plates (2140) for supporting the double-row synchronous conveyor belt (2120) are arranged on the inner sides of the two side plates (2110).

3. The chain length limiting and tensioning device for chain processing and manufacturing according to claim 2, characterized in that: The length limit calibration assembly (220) comprises two profiles (2210) which are parallel to each other and fixedly mounted on the tops of two side plates (2110), a gap for accommodating chain links and connecting accessories is reserved between the two profiles (2210), and a laser distance sensor transmitting end (2230) and a laser distance sensor receiving end (2240) which are arranged oppositely are respectively mounted on both sides of the top of one of the profiles (2210) via an L-shaped plate (2220).

4. The length limiting and tensioning device for chain processing and manufacturing according to claim 1, characterized in that: The assembly mechanism (300) comprises a tooling platform (310) and a positioning mechanism (320) mounted on the tooling platform (310) for clamping and fixing two chain links and a connecting accessory inserted between the two chain links, as well as a punch (330) mounted on a lifting frame above the tooling platform (310) and an automatic feeding mechanism (340) mounted on one side of the tooling platform (310) for feeding chain pieces one by one and continuously.

5. The chain length limiting and tensioning device for chain processing and manufacturing according to claim 4, characterized in that: The positioning mechanism (320) comprises two clamping seats (3220) which are symmetrically distributed and slidably assembled on both sides of the top of the workbench (310) through linear guide rails (3210), and a double-headed double-outlet cylinder (3230) which is laterally fixedly installed on the bottom of the workbench (310). Connecting rods (3240) distributed in the vertical direction are fixedly installed on the two output ends of the double-headed double-outlet cylinder (3230). The top ends of the two connecting rods (3240) pass through the workbench (310) and are fixedly connected to the outer side surfaces of the two clamping seats (3220) respectively. The workbench (310) is provided with two bar holes (3110) for the connecting rods (3240) to fit through.

6. The length limiting tensioning device for chain processing and manufacturing according to claim 4, characterized in that: A limiting groove (3120) distributed in the length direction of the feeding mechanism (210) is provided in the middle of the top surface of the workbench (310), and expansion structures (3130) are provided on both sides of the limiting groove (3120), and an arc-shaped groove (3140) distributed along the length direction is provided in the middle of the bottom surface of the limiting groove (3120), and two photoelectric sensors (3150) are installed downwardly on one side of the arc-shaped groove (3140).

7. The chain length limiting and tensioning device for chain processing and manufacturing according to claim 4, characterized in that: The automatic feeding mechanism (340) comprises a material box (3420) which is mounted on the top of the clamping seat (3220) through two vertical frames (3410) for accommodating a plurality of chain plates to fit in and overlap, a material guide trough (3430) which is arranged at the inner bottom of the material box (3420) for limiting the conveying of a single chain plate, and a material pushing assembly (3460) which is arranged at the outer bottom of the material box (3420) for the movement of a single chain plate, a baffle (3440) is encapsulated on the side of the material guide trough (3430) away from the material box (3420), and a notch is reserved between the baffle (3440) and the port of the material guide trough (3430) for the chain plate to fall, and a curved column (3450) which can fit the side of the chain plate is provided in the middle of the inner side of the baffle (3440).

8. The length limiting tensioning device for chain processing and manufacturing according to claim 7, characterized in that: The pushing assembly (3460) comprises a fixed plate (3461) and a pushing cylinder (3462) vertically mounted on the outside of the fixed plate (3461); the output end of the pushing cylinder (3462) passes through the fixed plate (3461) and is fixedly mounted with a fixed seat (3463); the inner side of the top of the fixed seat (3463) is hingedly connected to a flap (3464) via a torsion spring accessory.

9. The length limiting tensioning device for chain processing and manufacturing according to claim 1, characterized in that: The discharging platform (400) comprises two symmetrically distributed side frames (410), a plurality of short shafts (420) uniformly distributed at equal distances along the length direction of the two side frames (410) are vertically fixedly installed at the bottom of the inner side of the two side frames (410), rollers (430) are rotatably installed on the outside of the plurality of short shafts (420), and a shaft (440) is vertically rotatably installed at the top of one of the side frames (410) near the output end, a sprocket (450) is fixedly installed at the bottom end of the shaft (440), the sprocket (450) passes through the side frame (410) and meshes with the finished product chain, and a hand wheel (460) is fixedly installed at the top end of the shaft (440).

10. The length limiting and tensioning device for chain processing and manufacturing according to claim 1, characterized in that: The grouping mechanism (500) comprises a table (510), a forming frame (520) fixedly mounted on the top of the table (510) and having a planar spiral gradient circular structure, and a supporting plate (540) movably embedded in the table (510) via a lifting cylinder (530), and a discharge chute (550) is fixedly mounted behind the table (510) and located on the frame (100).

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