A blocking take-up mechanism for a feeder
By combining the blocking terminal block and the pulling steel wire rope in the blocking and take-up mechanism, flexible limit and non-limit switching of the coil conveying equipment is realized, which solves the problem of inconvenient replacement of existing equipment and improves the efficiency and safety of use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAOHE (ZHEJIANG) INTELLIGENT EQUIP CO LTD
- Filing Date
- 2025-06-25
- Publication Date
- 2026-07-03
AI Technical Summary
Existing roll conveying equipment is inconvenient to disassemble and assemble when changing rolls, has low flexibility of use, and occupies a large space.
The device employs a blocking and rewinding mechanism, which includes a blocking terminal block that can swing up and down, a pulling steel wire rope, and a rewinding and rewinding control assembly. The device switches between the limited and non-limited states of the coil by rewinding and rewinding the pulling steel wire rope, and uses an anti-rotation assembly and a buffer spring to reduce wear on the steel wire rope.
It improves the convenience and flexibility of roll replacement, reduces labor costs and space occupation, ensures safe and stable operation, minimizes structural damage, and is suitable for loading and conveying lithium battery aluminum foil rolls and other roll materials.
Smart Images
Figure CN224449681U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of feeding machine technology, and in particular to a blocking and winding mechanism for feeding rolls of materials such as lithium battery aluminum foil. Background Technology
[0002] There are many types of existing feeders and a wide variety of mechanical equipment used for conveying rolled materials, and many of them are patented technologies.
[0003] For example, Chinese Patent Application No. 202321811312.1 discloses a material roll fixing device with a limiting device, specifically relating to the field of wire drawing technology. It includes a base, and a material roll roller is provided on the outer wall of the support plate away from the controller. By setting a groove inside the material roll roller and setting a pressing rod inside the groove, the positioning sleeve can slide outside the positioning rod.
[0004] For example, Chinese Patent Application No. 202321341586.9 discloses a coil material storage and unloading device, including a coil material storage device and a coil material unloading device. The coil material unloading device is located outside the coil material storage device and unloads the coil material from the coil material storage device. The coil material unloading device includes a coil material moving drive mechanism, a sliding frame, a coil material unloading assembly, an unloading arm swing drive component, and a limiting and blocking mechanism. The sliding frame is located on the guide side of the slide rail of the coil material moving drive mechanism. The coil material unloading assembly is oscillatingly mounted on the sliding frame. The unloading arm swing drive component drives the coil material unloading assembly to swing on the sliding frame. The coil material unloading assembly can be fixed to one side of the coil material drum. The limiting and blocking mechanism is located on opposite sides of the coil material unloading assembly on the sliding frame and controls the swing limit position of the coil material unloading assembly on the sliding frame.
[0005] The existing winding conveying equipment limits the winding material by forming a fixed integral limit body on the winding shaft roller or other peripheral limit components. This structural design is not very flexible in use. When replacing it, the whole thing needs to be disassembled and reassembled, which will result in a large labor and time cost and will also occupy more space. Utility Model Content
[0006] The purpose of this invention is to provide a blocking and take-up mechanism for a feeder.
[0007] The above-mentioned objective of this utility model is achieved through the following technical solution: a blocking and retracting mechanism for a feeder, comprising a blocking terminal block that can swing up and down, a pulling steel wire rope that can drive the blocking terminal block to swing up and down, and a retracting and retracting control assembly that can retract the pulling steel wire rope backward and release it forward. The front end of the pulling steel wire rope is connected to one side of the blocking terminal block to drive the blocking terminal block to swing. The retracting and retracting control assembly includes a traction sleeve that allows the rear portion of the pulling steel wire rope to pass through and extend forward and backward, and can move back and forth. The rear end of the pulling steel wire rope is located behind the traction sleeve and is connected to an anti-rotation assembly that prevents the pulling steel wire rope from rotating during the retracting and retracting process. The anti-rotation assembly is supported on the rear side of the traction sleeve.
[0008] As a preferred embodiment of this invention, the anti-rotation component is elastically supported behind the traction sleeve by a front-to-back extending traction buffer spring.
[0009] As a preferred embodiment of the present invention, the anti-rotation component includes a smooth spherical bead fixedly connected to the rear end of the traction steel wire rope, and the smooth spherical bead is supported at a rearward position of the traction buffer spring.
[0010] As a preferred embodiment of this utility model, the traction sleeve has threading holes for the pulling steel wire rope to pass through from the front and back. The threading holes include a front threading hole section and a rear threading hole section that are connected front and back and coaxial. The diameter of the front threading hole section is smaller than the diameter of the rear threading hole section. The diameter of the pulling steel wire rope is smaller than the diameter of the front threading hole section so that there is a gap between the pulling steel wire rope and the front threading hole section. The traction buffer spring is sleeved in the rear threading hole section and extends rearward from the rear threading hole section. The diameter of the outer ring of the traction buffer spring is larger than that of the front threading hole section. The front end of the traction buffer spring abuts against the annular step portion formed at the connection position of the rear threading hole section and the front threading hole section on the traction sleeve.
[0011] As a preferred embodiment of this invention, the diameter of the smooth spherical bead is larger than the diameter of the inner ring of the tension buffer spring, and a portion of the smooth spherical bead is embedded in the rear end opening of the inner ring of the tension buffer spring.
[0012] As a preferred embodiment of this utility model, the retraction and deployment control assembly includes a retraction and deployment drive cylinder that can move back and forth and an operating rod that can be dragged to move back and forth along the retraction and deployment drive cylinder. A drive head is fixed to the front end of the operating rod. A retraction and deployment drive hole is formed inside the retraction and deployment drive cylinder, extending from the front end face to the rear for inserting the drive head. A retraction and deployment transition hole is also formed inside the retraction and deployment drive cylinder, extending from the rear end face to the front and communicating with the rear end of the retraction and deployment drive hole, for the operating rod to pass through. The retraction and deployment transition hole and the retraction and deployment drive hole are coaxial, and the diameter of the retraction and deployment transition hole is smaller than the diameter of the retraction and deployment drive hole. The drive head is cylindrical and its diameter is larger than the diameter of the retraction and deployment transition hole. The rear side of the drive head can abut against the annular step portion formed by the retraction and deployment drive cylinder at the position where the retraction and deployment drive hole and the retraction and deployment transition hole communicate. The traction sleeve is fixed to the front side position inside the retraction and deployment drive hole, and the smooth spherical bead is located in front of the drive head.
[0013] As a preferred embodiment of this utility model, the take-up and release control assembly further includes a guide cylinder for the take-up and release drive cylinder to move back and forth. The guide cylinder has a front guide hole, a middle guide hole, and a rear guide hole that are connected in sequence from the front end face to the rear end face and are coaxial. The diameter of the front guide hole is larger than the diameter of the middle guide hole, and the diameter of the middle guide hole is larger than the diameter of the rear guide hole. The take-up and release drive cylinder is sleeved in the front guide hole and can move back and forth. The operating rod passes through the take-up and release transition hole, the front guide hole, the middle guide hole, and the rear guide hole in sequence from front to back. The rear end of the operating rod is fixed with a cylindrical operating handle located behind the rear guide hole and able to abut against the rear end face of the guide cylinder. The take-up and release of the traction wire rope is driven by moving the operating handle back and forth.
[0014] As a preferred embodiment of this utility model, an elastic drive spring is provided in the front guide hole and the middle guide hole, which is sleeved around the operating rod. The front end of the elastic drive spring abuts against the rear end face of the retraction drive cylinder. The front end of the elastic drive spring abuts against the annular step portion formed by the connection between the middle guide hole and the rear guide hole of the guide cylinder. The outer diameter of the elastic drive spring is larger than the diameter of the rear guide hole and also larger than the diameter of the retraction transition hole.
[0015] As a preferred embodiment of this utility model, a limiting groove is formed on the rear end of the guide cylinder, extending forward from the rear end face and communicating radially with the rear guide hole. A limiting block is fixed on the operating rod, which can enter the limiting groove axially and be limited circumferentially.
[0016] As a preferred embodiment of the present invention, the retraction control assembly further includes a connecting seat through which the guide tube passes and is fixed.
[0017] The beneficial effects of this utility model are: it is very suitable for use on a roll feeder, and can be directly installed on the roll shaft. The position of the blocking terminal block is used to control the limiting and non-limiting states of the roll, making it more flexible to use, easier to change the roll, and more convenient to operate.
[0018] It has good operational cushioning, minimal structural damage, safe and stable use, and a relatively long lifespan.
[0019] It is ideal for use with aluminum foil rolls for lithium batteries, and is also suitable for loading and conveying other rolls. Attached Figure Description
[0020] Figure 1 This is a three-dimensional structural schematic diagram of the blocking and retracting mechanism in the embodiment;
[0021] Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure from the right-hand perspective;
[0022] Figure 3 yes Figure 1 A three-dimensional structural diagram of the part containing the retraction and extension control components;
[0023] Figure 4 yes Figure 3 A schematic diagram of the three-dimensional structure from a frontal perspective;
[0024] Figure 5 yes Figure 3 A diagram showing the state of the structure after the steel wire rope is pulled backward.
[0025] Figure 6 yes Figure 5 A diagram showing the state of the operating handle after rotation in the structure;
[0026] Figure 7 yes Figure 3 A schematic diagram of the internal structure after the structure is cut open. Detailed Implementation
[0027] The present invention will be further described in detail below with reference to the accompanying drawings.
[0028] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of the present utility model.
[0029] Examples, such as Figure 1-7As shown, a blocking and retracting mechanism for a feeder includes a blocking terminal block 1 that can swing up and down, a pulling steel wire rope 2 that can drive the blocking terminal block 1 to swing up and down, and a retracting and retracting control component that can retract the pulling steel wire rope 2 backward and release it forward. The front end of the pulling steel wire rope 2 is connected to one side of the blocking terminal block 1 to drive the blocking terminal block 1 to swing. The blocking terminal block 1 is directly set on the winding roller. The blocking terminal block 1 can be set as a strip-shaped rectangular structure or an overall approximately rectangular structure. By changing the flatness of the outer periphery of the winding roller through its position, it can achieve a limiting and non-limiting state, which is achieved by the pulling and retracting of the pulling steel wire rope 2. The pulling steel wire rope 2 can pass through the winding roller and extend to the rear body structure and connect to the retracting and retracting control component that is installed on the machine body to control its retracting and retracting actions.
[0030] Of course, the blocking terminal block 1 requires a corresponding assembly structure and a coil shaft for installation. Specifically, it may include a mounting frame, which includes a left mounting plate 71 and a right mounting plate 72 spaced apart on the left and right sides, and a bottom mounting plate 73 connecting the bottom of the left mounting plate 71 and the right mounting plate 72. A rotating shaft 74 is mounted at the front position between the left mounting plate 71 and the right mounting plate 72. The blocking terminal block 1 is located in the area between the left mounting plate 71 and the right mounting plate 72. The front part of the blocking terminal block 1 passes through the rotating shaft 74, while the lower side of the rear part of the blocking terminal block 1 abuts against the bottom mounting plate 73 and is connected to a limiting drive spring 75. Of course, the limiting drive spring 75 can be an ordinary spring, and in the initial state, the rear part of the blocking terminal block 1 is tilted upwards and higher than the front part, that is, it is in an inclined state. The front end of the pulling wire rope 2 passes through the bottom mounting plate 73 from bottom to top and passes through the inner ring of the limiting drive spring 75 to be fixedly connected to the lower side of the rear part of the blocking terminal block 1. Of course, annular recesses can be formed on the lower side of the rear portion of the blocking terminal block 1 and on the upper surface of the bottom mounting plate 73 for the upper and lower ends of the limit drive spring 75 to be embedded and limited. This provides better stability. The aforementioned fixing method can be achieved using existing technologies such as welding, integral molding, detachable threaded connection with bolt threads, or binding. An installation groove can be formed on the coil shaft, and the mounting bracket can be fixed in the groove using existing methods. In the initial state, the blocking terminal block 1, due to its tilt, has its rear end protruding radially out of the coil shaft, thus achieving axial limitation. When the traction wire rope 2 is pulled backward, the rear end of the blocking terminal block 1 swings downward, the limit drive spring 75 is compressed, and the entire blocking terminal block 1 becomes horizontal, preventing it from protruding out of the coil shaft, thus becoming a non-limited state. The coil can then move automatically axially on the coil shaft. The principle is relatively simple. The rear portion of the traction wire rope 2 is connected to the rear take-up and release control assembly through the space inside the coil shaft, and is driven and controlled by the take-up and release control assembly.
[0031] Specifically, the retraction and release control assembly includes a traction sleeve 3 that allows the rear portion of the pull wire rope 2 to pass through and extends forward and backward, enabling it to move back and forth. The rear end of the pull wire rope 2 is located behind the traction sleeve 3 and is connected to an anti-rotation component to prevent the pull wire rope 2 from rotating during retraction and release. The anti-rotation component is supported behind the traction sleeve 3. By pulling the traction sleeve 3 backward, a non-limited state can be achieved, and by releasing the traction sleeve 3 forward, it can return to the initial limited state. The anti-rotation component is designed to prevent the pull wire rope 2 from rotating due to rotation of the traction sleeve 3 during operation, which would generate torsional force and lead to deformation, damage, or breakage over long-term use. Moreover, since the anti-rotation component is located behind the traction sleeve 3, pulling the pull wire rope 2 backward will retract the rope, while releasing the rope forward will limit the stop terminal block 1.
[0032] Preferably, the anti-rotation component is elastically supported behind the traction sleeve 3 by a front-to-back extending traction buffer spring 31, so that the traction wire rope 2 will be elastically buffered during the traction process, and will not be damaged due to rapid pulling or sudden large force. The traction buffer spring 31 is sleeved on the outside of the traction wire rope 2.
[0033] Furthermore, the anti-rotation component includes a smooth spherical bead 32 fixedly connected to the rear end of the traction steel wire rope 2. The smooth spherical bead 32 is supported at a rearward position of the traction buffer spring 31. The smooth spherical bead 32 can be a steel ball with a smooth surface, so that the friction is very small, allowing it to slip. This prevents the traction steel wire rope 2 from rotating due to the rotation of the traction sleeve 3, reducing damage caused by torsional force. Of course, the anti-rotation component can use other universal ball joints or similar materials that facilitate relative slippage and rotation, so that the traction steel wire rope 2 only stretches and does not twist.
[0034] Preferably, the traction sleeve 3 has threading holes for the pulling wire rope 2 to pass through from the front and back. The threading holes include a front threading hole section 301 and a rear threading hole section 302 that are connected front and back and coaxial. The diameter of the front threading hole section 301 is smaller than the diameter of the rear threading hole section 302. The diameter of the pulling wire rope 2 is smaller than the diameter of the front threading hole section 301 so that there is a gap between the pulling wire rope 2 and the front threading hole section 301. The gap can prevent contact and wear of the wire rope. The traction buffer spring 31 is sleeved in the rear threading hole section 302 and extends rearward from the rear threading hole section 302. The diameter of the outer ring of the traction buffer spring 31 is larger than that of the front threading hole section 301. The front end of the traction buffer spring 31 abuts against the annular step portion of the traction sleeve 3 located at the position where the rear threading hole section 302 and the front threading hole section 301 are connected. Through the above design, the elastic support structure of this part is realized.
[0035] Furthermore, the diameter of the smooth spherical bead 32 is larger than the diameter of the inner ring of the tension buffer spring 31, and a portion of the smooth spherical bead 32 is embedded in the rear end ring of the inner ring of the tension buffer spring 31.
[0036] Preferably, the retraction control assembly includes a retraction drive cylinder 4 capable of moving back and forth and an operating rod 5 capable of being dragged to move back and forth along the retraction drive cylinder 4. The operating rod 5 can be a cylindrical rod. A drive head 51 is fixed to the front end of the operating rod 5. A retraction drive hole 41 extending from the front end face to the rear end for inserting the drive head 51 is formed inside the retraction drive cylinder 4. A retraction transition hole 42 extending from the rear end face to the front end and communicating with the rear end of the retraction drive hole 41 for the operating rod 5 to pass through is also formed inside the retraction drive cylinder 4. The retraction transition hole 42 and the retraction drive hole 41 are coaxial, and the diameter of the retraction transition hole 42 is smaller than the diameter of the retraction drive hole 41. The drive head 51 is cylindrical. The diameter is larger than the diameter of the take-up / release transition hole 42. The rear side of the drive head 51 can abut against the annular step portion formed by the take-up / release drive cylinder 4 at the position where the take-up / release drive hole 41 and the take-up / release transition hole 42 connect. The traction sleeve 3 is fixed at the front position inside the take-up / release drive hole 41. The traction sleeve 3 and the take-up / release drive cylinder 4 can be positioned and fixed by radial bolt pins. The smooth spherical bead 32 is located in front of the drive head 51. Through the above design, pulling the operating rod 5 backward drives the drive head 51 backward, and the drive head 51 backward drives the take-up / release drive cylinder 4 backward, so that the traction sleeve 3 will also move backward. The traction sleeve 3, along with the traction wire rope 2, moves backward, thus achieving a non-limited state. Here, we are only discussing the backward pulling and not the forward retraction structure design. However, based on the above structure, an elastic forward reset structure is needed to achieve the retraction reset, which will be explained in detail later.
[0037] Preferably, the take-up and release control assembly further includes a guide cylinder 6 for the take-up and release drive cylinder 4 to move back and forth. The guide cylinder 6 has a front guide hole 61, a middle guide hole 62 and a rear guide hole 63 that are connected in sequence from the front end face to the rear end face and are coaxial. The diameter of the front guide hole 61 is larger than the diameter of the middle guide hole 62, and the diameter of the middle guide hole 62 is larger than the diameter of the rear guide hole 63. The take-up and release drive cylinder 4 is fitted in the front guide hole 61 and can move back and forth. The operating rod 5 passes through the take-up and release transition hole 42, the front guide hole 61, the middle guide hole 62 and the rear guide hole 63 in sequence from front to back. The rear end of the operating rod 5 is fixed with a cylindrical operating handle 52 located behind the rear guide hole 63 and can abut against the rear end face of the guide cylinder 6. The take-up and release of the traction wire rope 2 is driven by moving the operating handle 52 back and forth. Pulling the operating handle 52 backward will pull the operating rod 5 and the drive head 51 backward. Of course, the diameter of the operating handle 52 should be as large as possible to facilitate manual pulling. Through these designs, the structure is more compact, has better guidance, and the structure operates more stably.
[0038] Furthermore, an elastic drive spring 50 is provided inside the front guide hole 61 and the middle guide hole 62, sleeved around the operating rod 5. The front end of the elastic drive spring 50 abuts against the rear end face of the retractable drive cylinder 4, and the front end of the elastic drive spring 50 abuts against the annular step portion of the guide cylinder 6 located at the connection position of the middle guide hole 62 and the rear guide hole 63. The outer diameter of the elastic drive spring 50 is larger than the diameter of the rear guide hole 63 and also larger than the diameter of the retractable transition hole 42. This design prevents the pulling action from being too fast or too forceful immediately, avoiding large impact forces. Due to its elasticity, the elastic drive spring 50 will increase its elasticity after being pulled and compressed. At this point, as long as the operating handle 52 no longer applies a backward pulling force, the operating rod 5 will return to its forward position, and the retractable drive cylinder 4 and the pulling steel wire rope 2 will also return to their original positions. Of course, the pulling steel wire rope 2 can be replaced with rope of other materials, with the same effect, and both are within the scope of protection of this application.
[0039] Furthermore, a limiting groove 630 is formed on the rear end of the guide cylinder 6, extending forward from the rear end face and radially communicating with the rear guide hole 63. A limiting block 631 is fixed on the operating rod 5, which can enter the limiting groove 630 axially and be circumferentially limited. Two or more sets of limiting blocks 631 and limiting grooves 630 can be provided. In the initial state, the limiting block 631 is in the limiting groove 630. When a non-limited state is required, the operating rod 5 is pulled back, and the limiting block 631 can be disengaged from the limiting groove 630. Then, the operating handle 52 is rotated, causing the operating rod 5 to rotate, and the limiting block 631 also rotates. In this way, the paired limiting blocks 631 and limiting grooves 631 are connected. When the circumferential misalignment occurs, the limit block 631 cannot enter the limit slot 630. When the operator releases the operating handle 52, the operating handle 52 will not move forward further because the limit block 631 will abut against the rear end face of the guide tube 6 and will not enter the limit slot 630, thus maintaining the non-limited state. This facilitates material replacement, etc., without the operator having to keep pulling the operating handle 52 backward. When the non-limited state is not needed, simply rotate the operating handle 52 to align the paired limit block 631 with the limit slot 630, and the limit block 631 can move forward into the limit slot 630 and reset. The winding and unwinding drive tube 4 and the pulling wire rope 2 can then return to their forward positions.
[0040] Furthermore, the retraction and deployment control assembly also includes a connecting seat 66 through which the guide tube 6 passes and is fixed. The connecting seat 66 can be a frame with a perforated mounting structure, through which the guide tube 6 can pass and be fixed. The connecting seat 66 itself can be installed on the machine body. A plastic protective sleeve 76 can be connected between the connecting seat 66 and the aforementioned bottom mounting plate 73. The protective sleeve 76 allows the pulling steel wire rope 2 to pass through its inner side and provides external protection.
[0041] Through the above design, the structure of the blocking and unwinding mechanism is more ingenious, suitable for use in the field of roll material conveying, with good structural flexibility, not easily damaged, and convenient operation.
[0042] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. A blocking and take-up mechanism for a feeder, characterized in that, The device includes a blocking terminal block (1) that can swing up and down, a pulling wire rope (2) that can drive the blocking terminal block (1) to swing up and down, and a take-up and release control assembly that can take the pulling wire rope (2) back and release it forward. The front end of the pulling wire rope (2) is connected to one side of the blocking terminal block (1) to drive the blocking terminal block (1) to swing. The take-up and release control assembly includes a traction sleeve (3) that can move back and forth, through which the rear part of the pulling wire rope (2) passes and extends back and forth. The rear end of the pulling wire rope (2) is located behind the traction sleeve (3) and is connected to an anti-rotation assembly that prevents the pulling wire rope (2) from rotating during take-up and release. The anti-rotation assembly is supported behind the traction sleeve (3).
2. A blocking mechanism for a feeder according to claim 1, characterized in that The anti-rotation component is elastically supported behind the traction sleeve (3) by a front-to-back extending traction buffer spring (31).
3. A blocking mechanism for a feeder according to claim 2, characterized in that The anti-rotation component includes a smooth spherical bead (32) fixedly connected to the rear end of the traction wire rope (2), and the smooth spherical bead (32) is supported at the rear position of the traction buffer spring (31).
4. A blocking mechanism for a feeder according to claim 3, characterized in that The traction sleeve (3) has threading holes for the pulling wire rope (2) to pass through from the front and back. The threading holes include a front threading hole section (301) and a rear threading hole section (302) that are connected from the front and back and coaxial. The diameter of the front threading hole section (301) is smaller than the diameter of the rear threading hole section (302). The diameter of the pulling wire rope (2) is smaller than the diameter of the front threading hole section (301) so that there is a gap between the pulling wire rope (2) and the front threading hole section (301). The traction buffer spring (31) is sleeved in the rear threading hole section (302) and extends backward from the rear threading hole section (302). The diameter of the outer ring of the traction buffer spring (31) is larger than that of the front threading hole section (301). The front end of the traction buffer spring (31) abuts against the annular step portion formed by the traction sleeve (3) at the position where the rear threading hole section (302) and the front threading hole section (301) are connected.
5. The blocking and take-up mechanism for a feeder according to claim 4, characterized in that, The diameter of the smooth spherical bead (32) is larger than the diameter of the inner ring of the tension buffer spring (31), and a portion of the smooth spherical bead (32) is embedded in the rear end ring of the inner ring of the tension buffer spring (31).
6. A blocking mechanism for a feeder according to claim 4, wherein The retraction and deployment control assembly includes a retraction and deployment drive cylinder (4) that can move back and forth and an operating lever (5) that can be dragged to move back and forth on the retraction and deployment drive cylinder (4). A drive head (51) is fixed to the front end of the operating lever (5). A retraction and deployment drive hole (41) extending from the front end face to the rear end for the drive head (51) to be inserted is formed inside the retraction and deployment drive cylinder (4). A retraction and deployment transition hole (42) extending from the rear end face to the front end and communicating with the rear end of the retraction and deployment drive hole (41) for the operating lever (5) to pass through is also formed inside the retraction and deployment drive cylinder (4). The drive head (51) is coaxial with the retraction drive hole (41) and the diameter of the retraction transition hole (42) is smaller than that of the retraction drive hole (41). The drive head (51) is cylindrical and its diameter is larger than that of the retraction transition hole (42). The rear side of the drive head (51) can abut against the annular step formed by the retraction drive cylinder (4) at the position where the retraction drive hole (41) and the retraction transition hole (42) are connected. The traction sleeve (3) is fixed in the front position inside the retraction drive hole (41). The smooth spherical bead (32) is located in front of the drive head (51).
7. A blocking mechanism for a feeder according to claim 6, characterized in that The take-up and release control assembly also includes a guide cylinder (6) for the take-up and release drive cylinder (4) to move back and forth. The guide cylinder (6) has a front guide hole (61), a middle guide hole (62) and a rear guide hole (63) that are connected in sequence from the front end face to the rear end face and are coaxial. The diameter of the front guide hole (61) is larger than the diameter of the middle guide hole (62), and the diameter of the middle guide hole (62) is larger than the diameter of the rear guide hole (63). The take-up and release drive cylinder (4) is fitted in the front guide hole (61) and can move back and forth. The operating rod (5) passes through the take-up and release transition hole (42), the front guide hole (61), the middle guide hole (62) and the rear guide hole (63) in sequence from front to back. The rear end of the operating rod (5) is fixed with a cylindrical operating handle (52) located behind the rear guide hole (63) and able to abut against the rear end face of the guide cylinder (6). The steel wire rope (2) is taken up and released by moving the operating handle (52) back and forth.
8. A blocking mechanism for a feeder according to claim 7, characterized in that The front guide hole (61) and the middle guide hole (62) are provided with elastic drive springs (50) sleeved around the operating rod (5). The front end of the elastic drive spring (50) abuts against the rear end face of the retraction drive cylinder (4). The front end of the elastic drive spring (50) abuts against the annular step part of the guide cylinder (6) located at the position where the middle guide hole (62) and the rear guide hole (63) are connected. The outer diameter of the elastic drive spring (50) is larger than the diameter of the rear guide hole (63) and also larger than the diameter of the retraction transition hole (42).
9. A blocking mechanism for a feeder according to claim 8, characterized in that A limiting groove (630) is formed on the rear end of the guide tube (6) extending forward from the rear end face and communicating radially with the rear guide hole (63). A limiting block (631) is fixed on the operating rod (5) that can enter the limiting groove (630) axially and be limited circumferentially.
10. A blocking mechanism for a feeder according to claim 9, characterized in that The retraction control assembly also includes a connecting seat (66) through which the guide tube (6) passes and is fixed.