Constant tension passive pay-off device for spools

Abstract

The utility model discloses a constant tension passive pay-off device for spool, relate to spool pay-off technical field, the utility model discloses a mounting seat, mandrel and tension swing arm mechanism, mandrel is installed in the front side of mounting seat, and the assembly of wire reel workpiece is equipped on the mandrel, and the chucking screw head of being pressed in the outer end part of wire reel workpiece is equipped with in the mandrel front end, and the region of mounting seat bottom edge and located wire reel workpiece both sides is fixed with cross bar and pivot respectively. The utility model discloses through upper wire roller and lower wire roller passive bear the tension in the pay-off process, and through swing arm body transmission to brake belt, provide the brake force through the pressure of chain to wire reel workpiece, set the initial working tension through tension spring, completely rely on the linkage response of mechanical structure, need not external power supply, gas source or control system, can automatically keep the pay-off tension in the preset range, the reliability is extremely high, and the failure rate is low, is applicable to the harsh industrial environment, realizes the real passive constant tension control.

Description

Technical Field

[0001] This utility model belongs to the field of wire feeding technology of I-beam reels, and in particular relates to a constant tension passive wire feeding device for I-beam reels. Background Technology

[0002] In the subsequent processing of steel wire rope (such as stranding, cabling, braiding, and winding), it is usually necessary to release the semi-finished wire wound on the I-beam reel in a constant and stable manner. Traditional wire release methods have many drawbacks: Gravity-driven cable laying: The I-beam reel is placed on a simple support and rotates by the tension of the cable; Problem: The tension fluctuates drastically as the diameter of the spool decreases (moment of inertia decreases). It is prone to loosening at startup and shaking and breaking at high speeds. The tension cannot be controlled, which seriously affects the uniformity and quality of the product.

[0003] 2. Mechanical brake line laying: Install friction brake pads (such as magnetic powder brakes, pneumatic brakes, etc.) on the I-beam reel shaft, and adjust the braking force manually or mechanically. Problem: The braking force is fixed and cannot respond to dynamic changes during the wire laying process. Frequent manual intervention and adjustment are still required to maintain a roughly constant tension. The degree of automation is low and it relies heavily on the operator's experience.

[0004] 3. Active servo feeding: The servo motor drives the I-beam reel to rotate in reverse. The tension is detected by the sensor and the motor torque is adjusted in real time. Advantages: precise control. Disadvantages: complex system, high cost, high energy consumption, high maintenance requirements. It is not suitable for many medium and low-cost conventional production scenarios.

[0005] Therefore, there is an urgent need for a passive wire feeding device that is simple in structure, low in cost, requires no external power, and can automatically maintain a relatively constant tension. Summary of the Invention

[0006] The purpose of this invention is to provide a constant tension passive wire feeding device for H-beam reels. The upper and lower guide rollers passively bear the tension during the wire feeding process, which is transmitted to the brake band through the swing arm. The pressure on the wire reel workpiece provided by the chain provides braking force, and the initial working tension is set by the tension spring. It relies entirely on the linkage response of the mechanical structure and does not require an external power source, air source or control system. It can automatically stabilize the wire feeding tension within the preset range, with extremely high reliability, low failure rate, and is suitable for harsh industrial environments, achieving true passive constant tension control.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a constant tension passive wire feeding device for H-beam reels, including a mounting base, a mandrel, and a tension swing arm mechanism; The mandrel is mounted on the front side of the mounting base, and a wire reel workpiece is assembled on the mandrel. The front end of the mandrel is provided with a clamping screw head that presses against the outer end of the wire reel workpiece. A crossbar and a rotating shaft are fixed to the bottom edge of the mounting base and to the areas on both sides of the coil workpiece. The rotating shaft is distributed parallel to the spindle. A connecting seat is provided above the front side of the mounting base, and the connecting seat is located directly above the crossbar. The tension swing arm mechanism includes a swing arm body, a tension spring, and a brake band; The swing arm body is a strip plate. The swing arm body is fitted to the front side of the mounting base. A sleeve that is rotatably connected to the rotating shaft is fixed to one side of the bottom end of the swing arm body. A vertical rod is fixed to the bottom end of the swing arm body. A tension spring is fixed between the vertical rod and the horizontal rod. The tension spring is distributed perpendicularly to the swing arm body. An upper guide roller and a lower guide roller are provided on the front side of the top end of the swing arm body. The brake band includes a chain, with both ends of the chain fixed to the connecting seat and the middle of the swing arm body, respectively. The chain surrounds half of the side plate of the wire reel workpiece. Several brake seats are fixed on the chain. The brake seats are provided with slots that sit on the outer edge of the side plate of the wire reel workpiece. Brake pads are provided in the slots. A side guide roller is fixed on the front side of the mounting base near the connecting base. The side guide roller is spaced opposite to the upper guide roller and the lower guide roller, and the side guide roller, the upper guide roller and the lower guide roller form an S-shaped winding frame.

[0008] Furthermore, a rotating base is fixed at the midpoint of the front side of the mounting base, and a turntable is provided at one end of the spindle. The turntable is located inside the rotating base and a bearing is provided between them. A positioning pin is provided on the turntable.

[0009] Furthermore, the side plate of the coil workpiece is provided with a positioning groove, the positioning pin is positioned in the positioning groove, and the thickness of the side plate of the coil workpiece is greater than the length of the positioning pin.

[0010] Furthermore, a wire outlet frame is fixed on the upper part of the mounting base near the side guide roller. The wire outlet frame includes a column parallel to the side guide roller, a wire outlet wheel is fixed on the column, and a wire pressing rod that fits against the edge of the wire outlet wheel is fixed on the column.

[0011] Furthermore, the connecting seat is provided with a strip groove, and the mounting seat is provided with a clamping screw. The connecting seat is fixed to the mounting seat by the strip groove and the clamping screw, and the clamping screw passes through the strip groove.

[0012] Furthermore, the side guide roller, upper guide roller, and lower guide roller all include a roller body with a length consistent with the workpiece on the wire spool. One end of the roller body is rotatably connected to a roller seat, and the other end of the roller body is provided with an anti-detachment head.

[0013] This utility model has the following beneficial effects: 1. This utility model passively bears the tension during the wire feeding process through the upper and lower guide rollers at the top of the swing arm body, and transmits it to the brake band through the swing arm body. The pressure on the wire reel workpiece provided by the chain provides braking force, and the initial working tension is set by the tension spring. It relies entirely on the linkage response of the mechanical structure, without the need for external power supply, air source or control system, and can automatically stabilize the wire feeding tension within the preset range. It has extremely high reliability, low failure rate, is suitable for harsh industrial environments, and achieves true passive constant tension control.

[0014] 2. This utility model uses an S-shaped winding frame composed of an upper guide roller, a lower guide roller, and a side guide roller. This increases the wrap angle, making the tension feedback more sensitive. It can effectively suppress tension disturbances caused by changes in the diameter of the wire spool and speed fluctuations, ensuring a smooth wire feeding process and preventing the wire from shaking. This greatly improves the quality of the wire rope products produced in subsequent processes.

[0015] 3. The main components of this utility model are machined parts (seat, shaft, arm, roller) and standard parts (spring, bearing, chain), without precision electrical or hydraulic components, which makes the manufacturing cost of the device much lower than that of an active servo system. Moreover, daily maintenance only requires checking worn parts (such as brake seats) and lubricating rotating parts, making maintenance simple and extremely low cost.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a structural schematic diagram of a constant tension passive wire feeding device for an I-beam reel according to the present invention; Figure 2 This is a structural schematic diagram from another perspective of the present invention; Figure 3 This is a schematic diagram of the structure of the present invention after the wire reel workpiece is removed; The attached diagram lists the components represented by each number as follows: 1-Mounting base, 2-Mandrel, 3-Wire reel workpiece, 4-Swing arm body, 5-Tension spring, 6-Chain, 7-Wire exit frame, 101-Horizontal bar, 102-Rotating shaft, 103-Connecting seat, 104-Side guide roller, 105-Rotating seat, 106-Strip groove, 107-Clamping screw, 201-Clamping head, 202-Turntable, 203-Positioning pin, 301-Positioning groove, 401-Sleeve, 402-Vertical rod, 403-Upper guide roller, 404-Lower guide roller, 601-Brake seat, 701-Column, 702-Wire exit wheel, 703-Pressing rod, 4031-Roller body, 4032-Roller seat, 4033-Anti-detachment head. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-3 As shown, this utility model is a constant tension passive wire feeding device for H-beam reels, including a mounting base 1, a spindle 2 and a tension swing arm mechanism; The spindle 2 is installed on the front side of the mounting base 1. The spindle 2 is equipped with a wire reel workpiece 3. The front end of the spindle 2 is provided with a clamping screw head 201 that presses against the outer end of the wire reel workpiece 3. A crossbar 101 and a rotating shaft 102 are fixed on the bottom edge of the mounting base 1 and on both sides of the wire coil workpiece 3. The rotating shaft 102 is distributed parallel to the spindle 2. A connecting seat 103 is provided on the upper front side of the mounting base 1. The connecting seat 103 is located directly above the crossbar 101. The tension swing arm mechanism includes a swing arm body 4, a tension spring 5, and a brake band; The swing arm body 4 is a strip plate. The swing arm body 4 is fitted to the front side of the mounting base 1. A sleeve 401 that is rotatably connected to the rotating shaft 102 is fixed on one side of the bottom end of the swing arm body 4. A vertical rod 402 is fixed at the bottom end of the swing arm body 4. A tension spring 5 is fixed between the vertical rod 402 and the horizontal rod 101. The tension spring 5 is perpendicular to the swing arm body 4. An upper guide roller 403 and a lower guide roller 404 are provided on the front side of the top end of the swing arm body 4. The brake band includes a chain 6, with both ends of the chain 6 fixed to the connecting seat 103 and the middle of the swing arm body 4 respectively. The chain 6 surrounds half of the side plate of the coil workpiece 3. Several brake seats 601 are fixed on the chain 6. The brake seats 601 are provided with slots that sit on the outer edge of the side plate of the coil workpiece 3, and brake pads are provided in the slots. A side guide roller 104 is fixed on the front side of the mounting base 1 near the connecting base 103. The side guide roller 104 is spaced opposite to the upper guide roller 403 and the lower guide roller 404. The side guide roller 104, the upper guide roller 403 and the lower guide roller 404 form an S-shaped winding frame.

[0021] Among them, such as Figure 3 As shown, a rotating base 105 is fixed at the midpoint of the front side of the mounting base 1, and a rotating platform 202 is provided at one end of the spindle 2. The rotating platform 202 is located inside the rotating base 105 and a bearing is provided between them. A positioning pin 203 is provided on the rotating platform 202.

[0022] Among them, such as Figure 1-3 As shown, the side plate of the coil workpiece 3 is provided with a positioning groove 301, and the positioning pin 203 is positioned in the positioning groove 301 with a gap. The thickness of the side plate of the coil workpiece 3 is greater than the length of the positioning pin 203.

[0023] Among them, such as Figure 1-3 As shown, a wire feed frame 7 is fixed on the upper part of the mounting base 1 near the side guide roller 104. The wire feed frame 7 includes a column 701 parallel to the side guide roller 104, a wire feed wheel 702 is fixed on the column 701, and a wire pressing rod 703 that fits against the edge of the wire feed wheel 702 is fixed on the column 701.

[0024] Among them, such as Figure 2-3 As shown, the connecting seat 103 is provided with a strip groove 106, and the mounting seat 1 is provided with a clamping screw 107. The connecting seat 103 is fixed to the mounting seat 1 through the strip groove 106 and the clamping screw 107, and the clamping screw 107 passes through the strip groove 106.

[0025] Among them, such as Figure 1-3 As shown, the side guide roller 104, the upper guide roller 403 and the lower guide roller 404 all include a roller body 4031 with a length consistent with the wire reel workpiece 3. One end of the roller body 4031 is rotatably connected to a roller seat 4032, and the other end of the roller body 4031 is provided with an anti-detachment head 4033.

[0026] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0027] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A constant tension passive wire feeding device for an H-beam reel, characterized in that: It includes a mounting base (1), a spindle (2), and a tension swing arm mechanism; The mandrel (2) is installed on the front side of the mounting base (1), and a wire reel workpiece (3) is mounted on the mandrel (2). The front end of the mandrel (2) is provided with a clamping screw head (201) that presses against the outer end of the wire reel workpiece (3). A crossbar (101) and a rotating shaft (102) are fixed on the bottom edge of the mounting base (1) and on both sides of the wire coil workpiece (3). The rotating shaft (102) is distributed parallel to the spindle (2). A connecting seat (103) is provided above the front side of the mounting base (1). The connecting seat (103) is located directly above the crossbar (101). The tension swing arm mechanism includes a swing arm body (4), a tension spring (5), and a brake band; The swing arm body (4) is a strip plate. The swing arm body (4) is fitted to the front side of the mounting base (1). A sleeve (401) that is rotatably connected to the rotating shaft (102) is fixed on one side of the bottom end of the swing arm body (4). A vertical rod (402) is fixed at the bottom end of the swing arm body (4). A tension spring (5) is fixed between the vertical rod (402) and the horizontal rod (101). The tension spring (5) is perpendicular to the swing arm body (4). An upper guide roller (403) and a lower guide roller (404) are provided on the front side of the top end of the swing arm body (4). The brake band includes a chain (6), with both ends of the chain (6) fixed to the connecting seat (103) and the middle of the swing arm body (4) respectively. The chain (6) surrounds half of the side plate of the coil workpiece (3). Several brake seats (601) are fixed on the chain (6). The brake seats (601) are provided with a groove that sits on the outer edge of the side plate of the coil workpiece (3). A brake pad is provided in the groove. A side guide roller (104) is fixed on the front side of the mounting base (1) near the connecting base (103). The side guide roller (104) is spaced opposite to the upper guide roller (403) and the lower guide roller (404). The side guide roller (104), the upper guide roller (403) and the lower guide roller (404) form an S-shaped winding frame.

2. The constant tension passive wire feeding device for an H-beam reel according to claim 1, characterized in that, The mounting base (1) has a rotating base (105) fixed at the midpoint of its front side. One end of the spindle (2) is provided with a turntable (202). The turntable (202) is located inside the rotating base (105) and a bearing is provided between them. The turntable (202) is provided with a positioning pin (203).

3. A constant tension passive wire feeding device for an I-beam reel according to claim 2, characterized in that, The side plate of the coil workpiece (3) is provided with a positioning groove (301), and the positioning pin (203) is positioned in the positioning groove (301) with a gap. The thickness of the side plate of the coil workpiece (3) is greater than the length of the positioning pin (203).

4. A constant tension passive wire feeding device for an I-beam reel according to claim 1, characterized in that, The mounting base (1) has a wire outlet frame (7) fixed on the upper part of the side near the side guide roller (104). The wire outlet frame (7) includes a column (701) parallel to the side guide roller (104). A wire outlet wheel (702) is fixed on the column (701). A wire pressing rod (703) that fits against the edge of the wire outlet wheel (702) is fixed on the column (701).

5. A constant tension passive wire feeding device for an I-beam reel according to claim 1, characterized in that, The connecting seat (103) is provided with a strip groove (106), and the mounting seat (1) is provided with a clamping screw (107). The connecting seat (103) is fixed to the mounting seat (1) through the strip groove (106) and the clamping screw (107). The clamping screw (107) passes through the strip groove (106).

6. A constant tension passive wire feeding device for an I-beam reel according to claim 1, characterized in that, The side guide roller (104), upper guide roller (403) and lower guide roller (404) each include a roller body (4031) with a length consistent with the workpiece (3) of the wire spool. One end of the roller body (4031) is rotatably connected to a roller seat (4032), and the other end of the roller body (4031) is provided with an anti-detachment head (4033).

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