A chain link swaging device

Abstract

The utility model relates to a kind of link twisted winding forming device, including fixed guide screw and the rotating heart column in guide screw, the section of heart column is long circle, when processing, the one end of metal rod is bent into hook and is hooked in heart column outer circle, heart column rotates, hook rotates with heart column to make metal rod winding on heart column;Hook end rotates to guide screw end and enters between adjacent helical line, and metal rod winding on heart column is moved along the length direction of heart column by the guiding effect of guide screw, to form helical rod of spiral shape;Cut off at the same position of each circle of helical rod, to form multiple single-section rod;Finally single-section rod is flattened, and the both ends of single-section rod are butt joint, to form link;The utility model adopts the mode of whole twisted winding and cutting, realizes the processing forming of link, and processing efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of chain processing technology, specifically to a chain link winding and forming device. Background Technology

[0002] In the chain manufacturing industry, the traditional processing of chain links typically involves multiple independent steps such as cutting, bending, and welding, resulting in complex operations and limited production efficiency. The bending process, in particular, requires bending both ends of each link separately, leading to low efficiency. Furthermore, multi-step production places high demands on equipment and relies heavily on manual operation, making it difficult to achieve continuous and efficient integrated molding. Therefore, the industry urgently needs a new molding process that can simplify the process, improve material utilization, and enhance the structural consistency of chain links. Utility Model Content

[0003] This utility model addresses the shortcomings of existing technologies by providing a chain link winding and forming device.

[0004] This utility model is achieved through the following technical solution: a chain link winding forming device is provided, including a fixed guide spiral and a core rotating inside the guide spiral. The cross-section of the core is oblong. The core in this solution is oblong, which is adapted to the shape of the inner ring of the chain link. In use, one end of the metal rod is bent into a hook and hooked onto the outer ring of the core. The core rotates, and the hook rotates with the core, causing the metal rod to wind around the core. The end of the hook rotates to the end of the guide spiral and enters between adjacent spiral lines. Through the guiding action of the guide spiral, the metal rod wound on the core moves along the length direction of the core, thereby forming a spiral rod.

[0005] As an optimization, the length of the core column cross-section is 0.9-1.0 times the inner diameter of the guide spiral. This achieves a good guiding effect through the guide spiral.

[0006] As an optimization, the guide screw is formed by bending a round rod and has the same pitch everywhere.

[0007] As an optimization, a frame is also included, comprising a transmission box and a turntable shafted to the side of the transmission box. The end of the mandrel is fixedly connected to the center of the turntable, and a drive mechanism for rotating the turntable is mounted on the frame. In this design, the drive mechanism drives the turntable to rotate, thereby causing the mandrel to rotate.

[0008] As an optimization, the drive mechanism includes a secondary pinion shaft connected inside the transmission box and a motor fixed to the outside of the transmission box. A primary pinion is fixed to the motor shaft, and a primary gear meshing with the primary pinion is fixed to the side of the secondary pinion. A secondary gear meshing with the secondary pinion is fixed to the end of the turntable. In this design, as the motor rotates, the primary pinion and primary gear undergo one reduction speedup, and the secondary pinion and secondary gear undergo a second reduction speedup, thereby driving the turntable to rotate. The turntable then drives the spindle to rotate.

[0009] As an optimization, the motor is a geared motor, which further improves the rotational torque.

[0010] As an optimization, a fixed base is fixedly connected to the upper end of the transmission box, and the guide screw is fixedly connected to the fixed base via a connecting rod. In this design, the fixed base secures the guide screw.

[0011] As an optimization, each turn of the guide spiral is provided with at least one connecting rod to prevent deformation of the guide spiral.

[0012] As an optimization, the fixed base is equipped with a clamping mechanism, which includes a guide shaft that slides radially along the core column on the fixed base. One end of the guide shaft is fixedly connected to a wheel seat, and a clamping wheel is axled onto the wheel seat. The other end of the guide shaft is fixedly connected to the telescopic shaft of the hydraulic cylinder. In this design, the rodless chamber of the hydraulic cylinder is connected to a high-pressure oil tank. High-pressure oil from the high-pressure oil tank enters the rodless chamber, pushing the telescopic shaft to extend elastically, thereby pressing the clamping wheel against the outside of the metal rod, allowing the metal rod to effectively fit against the outer ring of the core column.

[0013] The beneficial effects of this utility model are as follows: This chain link winding and forming device, through the cooperation of a guide spiral and a core column, achieves continuous spiral winding and automatic propulsion of the metal rod, completing the chain link blank production in a single forming process, significantly simplifying the production process and improving manufacturing efficiency. Because it adopts an integral winding and then cutting method, raw materials are utilized more fully, reducing waste generation. Simultaneously, the chain link is integrally formed from a single metal rod, which not only improves the overall strength and fatigue life of the chain link but also reduces quality risks caused by welding defects. This device has a reasonable structure and is easy to operate, making it particularly suitable for standardized, large-scale chain link production, significantly improving product consistency and reliability while reducing manufacturing costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the core column and guide screw of this utility model; Figure 2 This is a schematic diagram of the structure of the screw rod of this utility model; Figure 3 This is a front view of the screw rod of this utility model; Figure 4 This is a top view of the screw rod of this utility model; Figure 5 This is a schematic diagram of the structure of a single-section rod of this utility model; Figure 6 This is a front view of the single-section rod of this utility model; Figure 7 This is a schematic diagram of the structure in the initial processing state of this utility model; Figure 8 This is a front view of the initial processing state of this utility model; Figure 9 This is a rear view of the initial processing state of this utility model; Figure 10 This is a right view of the initial processing state of this utility model; Figure 11 This utility model Figure 8 Sectional view of plane AA; Figure 12 This is a schematic diagram of the structure of the present invention in its processing state; Figure 13 This is a front view of the present invention in its processing state; Figure 14 This is a front view of the clamping mechanism of this utility model; Figure 15 This utility model Figure 14 Sectional view of the middle BB surface; As shown in the figure: 1. Core column, 2. Guide screw, 3. Helical rod, 4. Single-section rod, 5. Metal rod, 6. Hook, 7. Transmission box, 8. Turntable, 9. Clamping mechanism, 91. Clamping wheel, 92. Wheel seat, 93. Guide shaft, 94. Guide sleeve, 95. Hydraulic cylinder, 10. Fixed seat, 11. Connecting rod, 12. Base, 13. First-stage pinion, 14. First-stage large gear, 15. Second-stage pinion, 16. Second-stage large gear, 17. Motor. Detailed Implementation

[0015] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0016] like Figures 1-15 As shown, the present invention provides a chain link winding forming device, which includes a frame, a fixed guide screw 2, and a core column 1 rotating within the guide screw 2.

[0017] The frame includes a transmission box 7 and a turntable 8 shafted to the side of the transmission box 7. The lower end of the transmission box 7 is fixed to the base 12, which is fixed to the ground or platform. The transmission box 7 is a vertical hollow metal box. The turntable 8 is rotatably connected to the side wall of the transmission box 7. The end of the core column 1 is fixed to the center of the turntable 8. The rotation shaft of the turntable 8 is horizontally set, thereby making the rotation shaft of the core column 1 horizontally set.

[0018] To achieve the rotation of the core column 1, a drive mechanism for rotating the turntable 8 is mounted on the frame. For example... Figure 11 As shown, the drive mechanism includes a two-stage pinion 15 shafted inside the transmission box 7 and a motor 17 fixed to the outside of the transmission box 7. The motor 17 is a geared motor, which has the effect of speed reduction and torque increase.

[0019] A primary pinion 13 is fixedly connected to the shaft of the motor 17, and a primary large gear 1 that meshes with the primary pinion 13 is fixedly connected to the side of the secondary pinion 15. The primary large gear 1 and the secondary pinion 15 are coaxial.

[0020] A secondary large gear 16, which meshes with the secondary pinion 15, is fixedly connected to the end of the turntable 8 away from the core column 1. The secondary large gear 16 is coaxial with the turntable 8. Thus, a first reduction is achieved through the primary pinion 13 and the primary large gear 1, and a second reduction is achieved through the secondary pinion 15 and the secondary large gear 16.

[0021] The core column 1 has an oblong cross-section, the dimensions of which are consistent with the inner hole shape of the chain link to be processed. Specifically, the two ends of the cross-section are arc-shaped, and the two arcs are connected by a straight section.

[0022] The guide spiral 2 is formed by bending a round rod with the same pitch throughout. The diameter of the round rod is not less than the diameter of the chain link to be processed. The guide spiral 2 has at least one turn, and generally 3-6 turns. The rotation axis of the core column 1 coincides with the central axis of the guide spiral 2. The length of the cross-section of the core column 1 is 0.9-1.0 times the inner diameter of the guide spiral 2.

[0023] In order to fix the guide spiral 2, a fixing seat 10 is fixedly connected to the upper end of the transmission box 7. The guide spiral 2 is fixedly connected to the fixing seat 10 through a connecting rod 11. Specifically, in this embodiment, each turn of the guide spiral 2 is provided with at least one connecting rod 11, so that each turn is fixed.

[0024] The fixed base 10 is equipped with a pressing mechanism, which includes a guide shaft 93 that slides radially along the core column 1 on the fixed base 10. In this embodiment, a vertical guide sleeve 94 is fixedly connected to the fixed base 10. The guide shaft 93 is a rectangular shaft that passes through the guide sleeve 94, thereby realizing the vertical sliding guidance of the guide shaft 93.

[0025] The lower end of the guide shaft 93 is fixedly connected to a wheel seat 92, and a pressure wheel 91 is shafted onto the wheel seat 92. The upper end of the guide shaft 93 is fixedly connected to the telescopic shaft of the hydraulic cylinder 95. The hydraulic cylinder 95 is fixed to the upper end of the guide sleeve 94, and the telescopic shaft of the hydraulic cylinder is inserted into the guide sleeve 94 to achieve a fixed connection with the upper end of the guide shaft 93.

[0026] The rodless chamber of the hydraulic cylinder is connected to the high-pressure oil tank. High-pressure oil from the high-pressure oil tank enters the rodless chamber, pushing the telescopic shaft to extend elastically, thereby pressing the clamping wheel against the outside of the metal rod. This allows the metal rod to effectively fit against the outer ring of the mandrel. At the same time, when the mandrel 1 rotates, the clamping wheel can fluctuate with the shape of the outer ring of the mandrel 1 to maintain its fit with the metal rod.

[0027] A method for forming a link includes the following steps: Bend one end of the metal rod 5 into a hook 6 and hook it onto the outer ring of the core column 1. This can be done by first bending the hook 6 at the end of the metal rod 5, or by placing the end on the side of the core column 1 and then bending it to form the hook 6. Figure 8 , 9 As shown, hook 6 hooks onto the edge of core column 1, and hook 6 bends toward guide spiral 2.

[0028] When motor 17 rotates, the first-stage pinion 13 and the first-stage large gear 1 undergo a first-stage reduction, and the second-stage pinion 15 and the second-stage large gear 16 undergo a second-stage reduction, thereby driving turntable 8 to rotate. Turntable 8 drives the core column 1 to rotate, and hook 6 rotates with the core column 1 to make the metal rod 5 wrap around the core column 1. At the same time, the pressure wheel 91 presses the metal rod 5 tightly against the outside of the core column 1, so that the metal rod 5 can effectively fit with the outer ring of the core column 1 to ensure the formed shape.

[0029] Because the hook 6 bends towards the guide spiral 2, after the end of the hook 6 rotates, it rotates to the end of the guide spiral 2 and enters between adjacent spiral lines. Through the guiding action of the guide spiral 2, the metal rod 5 wound on the core column 1 moves along the length of the core column 1, thereby forming a spiral rod 3, shaped like... Figure 2 As shown, the helical rod 3 is composed of alternating straight line segments and arc segments.

[0030] The screw 3 is cut off at the same position in each turn, thus forming multiple single-section screws 4, such as... Figure 2 , 5 As shown in Figures 6 and 7, in this embodiment, the rod is cut off on the straight segment, and the shape of the single-section rod 4 is as follows: Figure 5 , 6 As shown.

[0031] Flatten single-section rod 4, as follows: Figure 6 As shown, in Figure 6Flatten the links in the top and bottom direction (if the links need to be connected into a chain, connect the two links between the links during the flattening process), so that the two ends of the single link 4 are joined together to form a link, and then weld them at the joint.

[0032] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A chain link winding forming device, characterized in that: It includes a fixed guide screw (2) and a core column (1) that rotates within the guide screw (2), the core column (1) having an elongated oval cross section.

2. The chain link winding forming device according to claim 1, characterized in that: The length of the cross section of the core column (1) is 0.9-1.0 times the inner diameter of the guide spiral (2).

3. The chain link winding forming device according to claim 1, characterized in that: The guide screw (2) is formed by bending a round rod and the pitch is the same everywhere.

4. The chain link winding forming device according to claim 1, characterized in that: It also includes a frame, which includes a transmission box (7) and a turntable (8) axially connected to the side of the transmission box (7). The end of the core column (1) is fixedly connected to the center of the turntable (8). The frame is equipped with a drive mechanism to drive the turntable (8) to rotate.

5. The chain link winding forming device according to claim 4, characterized in that: The drive mechanism includes a secondary pinion (15) shafted in the transmission box (7) and a motor (17) fixed to the outside of the transmission box (7). A primary pinion (13) is fixed to the shaft of the motor (17). A primary gear (14) meshing with the primary pinion (13) is fixed to the side of the secondary pinion (15). A secondary gear (16) meshing with the secondary pinion (15) is fixed to the end of the turntable (8).

6. The chain link winding forming device according to claim 5, characterized in that: The motor (17) is a geared motor.

7. The chain link winding forming device according to claim 4, characterized in that: The transmission box (7) is fixedly connected to a fixed seat (10) at its upper end, and the guide screw (2) is fixedly connected to the fixed seat (10) through a connecting rod (11).

8. The chain link winding forming device according to claim 7, characterized in that: Each turn of the guide spiral (2) is provided with at least one connecting rod (11).

9. A chain link winding forming device according to claim 7, characterized in that: The fixed seat (10) is equipped with a pressing mechanism, which includes a guide shaft (93) that slides radially along the core column (1) on the fixed seat (10). One end of the guide shaft (93) is fixedly connected to a wheel seat (92), and a pressing wheel (91) is axially connected to the wheel seat (92). The other end of the guide shaft (93) is fixedly connected to the telescopic shaft of the hydraulic cylinder (95).

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