Pull cord take-up lock device

Abstract

The utility model belongs to the technical field of pulling rope closing equipment, specifically discloses a kind of pulling rope closing locking equipment, including base, and the workbench of base is fixedly connected with locating seat, to locate the carrier that outer surface is covered with cloth, two clamping pulling rope mechanisms are equipped on base, locating seat is located between two clamping pulling rope mechanisms, and the electric screwdriver with lifting function and for fixing lock ring and carrier is equipped above locating seat.The utility model is by being equipped with two clamping pulling rope mechanisms for clamping cloth top opening place rope extraction two free ends and synchronous reverse movement realization rope extraction closing, and locating seat is located between two clamping pulling rope mechanisms;Electric screwdriver with lifting function and for fixing lock ring and sound box carrier is equipped above locating seat, and two groups of clamping pulling rope mechanisms are used to replace artificial pulling rope, the problem that artificial pulling rope is time-consuming and laborious and low yield is solved from the root, and sound box production efficiency and product quality are significantly improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of rope closing equipment, and in particular relates to a rope closing and locking device. Background Technology

[0002] In the speaker manufacturing industry, especially for speakers covered with fabric, the drawstring closure process is a crucial step affecting the overall quality and appearance of the speaker. The quality of the fabric closure not only affects the speaker's aesthetics but also significantly impacts its sealing performance, sound propagation, and other performance indicators. However, the currently prevalent drawstring closure method in the industry has many problems, severely hindering the improvement of speaker production efficiency and product quality.

[0003] The existing speaker enclosure fabric stretching and closing process is highly dependent on manual operation. Specifically, it requires at least two employees working together. One employee is responsible for pulling the two free ends of the drawstring at the top opening of the enclosure with both hands, using their own strength and experience to control the force of the pull to close the enclosure; the other employee uses a power screwdriver or other tools to manually fix the locking ring to the speaker carrier, completing the screw-locking operation. This method of operation has significant drawbacks.

[0004] From a labor cost perspective, requiring at least two employees to work on the fabric wrapping and finishing of a single speaker significantly increases a company's labor input and production costs. With rising labor costs, this issue is becoming increasingly prominent, placing greater cost pressure on companies in market competition.

[0005] In terms of operational efficiency, manual operation is relatively slow, making it difficult to achieve rapid and continuous mass production. Because it requires close cooperation between two employees, any communication breakdowns or discrepancies in operating rhythms will affect the smooth operation of the entire workflow, resulting in low production efficiency.

[0006] More importantly, product quality is difficult to guarantee. During manual rope pulling, the pulling force applied by each employee varies significantly. Even if the same employee operates at different times, it's difficult to ensure that the force applied each time is uniform. This uneven pulling force can cause some speaker covers to loosen, resulting in poor drawstring closure. Loose covers not only affect the speaker's appearance, making it look less refined and aesthetically pleasing, but may also affect the speaker's sealing, negatively impacting sound propagation and leading to a decrease in sound quality. This not only increases the company's defect rate and reduces the product qualification rate, but also seriously damages the company's brand image and market competitiveness.

[0007] Therefore, the inventors dedicated themselves to designing a rope-closing device to solve the above problems. Utility Model Content

[0008] The purpose of this utility model is to provide a rope-pulling and locking device that can reduce labor costs and improve the efficiency and quality of the rope-pulling operation for speaker covers.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A drawstring locking device includes a base, a positioning seat fixedly connected to the worktable of the base for positioning a carrier covered with a fabric. The base is provided with two drawstring clamping mechanisms for clamping the two free ends of the drawstring at the top opening of the fabric and moving them in opposite directions synchronously to achieve drawstring locking. The positioning seat is located between the two drawstring clamping mechanisms. An electric screwdriver with lifting function is provided directly above the positioning seat for fixing the locking ring to the carrier.

[0010] As an improvement of the rope-locking device of this utility model, the two rope-clamping mechanisms are symmetrically arranged. Each rope-clamping mechanism includes a pull block with a lateral movement function and a rope-pressing block with a longitudinal movement function. The pull block is provided with a guide groove for receiving the free end of the rope. The rope-pressing block is longitudinally slidably arranged on the pull block to release or press the rope.

[0011] As an improvement to the rope tightening device of this utility model, the rope pressing block has multiple anti-slip grooves arranged obliquely and at intervals on the rope pressing surface.

[0012] As an improvement of the rope tightening device of this utility model, the guide groove is located on the top of the pull block and is arranged along the pulling direction of the rope. The top of the pull block is provided with a sliding groove, which is perpendicular to the guide groove and communicates with it. The rope pressing block is slidably arranged in the sliding groove.

[0013] As an improvement of the rope tightening device of this utility model, the pull block includes a fixed seat, a guide block and a bottom block with lateral movement function. The fixed seat is L-shaped and fixed on the bottom block. The guide block is U-shaped and fixed in the fixed seat to form the sliding groove. The guide groove is located on the top of the guide block.

[0014] As an improvement of the rope tightening device of this utility model, a fixed plate is vertically fixed on the workbench of the machine base, and a sliding plate is vertically slidably connected to the fixed plate. The electric screwdriver is vertically moved and mounted on the sliding plate.

[0015] As an improvement of the rope tightening device of this utility model, a limiting pressure block is elastically attached to the fixing block of the slide plate by a hanging rod. The limiting pressure block is located between the electric screwdriver and the locking ring, and the limiting pressure block is provided with a through hole for the locking shaft of the electric screwdriver to pass through.

[0016] As an improvement of the rope tightening device of this utility model, the limiting block is elastically connected to the fixed block by a spring, and the spring is sleeved on the hanging rod and located between the fixed block and the limiting block.

[0017] As an improvement of the rope tightening device of this utility model, the carrier includes a locking block and a housing. The housing is sleeved on the locking block. The top surface of the locking block is provided with a locking hole. The locking ring is threadedly fixed to the locking hole by a locking screw.

[0018] As an improvement of the rope tightening device of this utility model, the top of the locking block is provided with multiple limiting platforms at intervals, and the locking ring is provided with multiple limiting holes that correspond to all the limiting platforms one by one. All the limiting platforms are arranged in a circle around the locking screw at intervals.

[0019] Compared with existing technologies, this utility model's pull-cord locking device uses a positioning seat fixedly connected to the worktable of the machine base to accurately position and place the speaker carrier covered with fabric. Two pull-cord clamping mechanisms are installed on the machine base to hold the two free ends of the pull cord at the top opening of the fabric and move synchronously in opposite directions to achieve cord closing. The positioning seat is located between the two pull-cord clamping mechanisms. An electric screwdriver with lifting function is installed directly above the positioning seat to fix the locking ring to the speaker carrier. Using two sets of pull-cord clamping mechanisms replaces manual pull-cord pulling, directly saving manpower. Furthermore, by setting the tension value, the force applied to the pull-cord of each speaker product can be guaranteed to be the same, effectively avoiding the problem of fabric loosening caused by uneven force during manual pull-cord pulling. This fundamentally solves the problems of time-consuming, labor-intensive, and low-yield manual pull-cord pulling, significantly improving speaker production efficiency and product quality. Attached Figure Description

[0020] Figure 1 This is a perspective view of the pull rope closing and locking device of this utility model; Figure 2 This is an enlarged view of the internal structure of the pull rope locking device of this utility model; Figure 3 yes Figure 2 Enlarged view of point A in the middle; Figure 4 This is a magnified front view of the internal structure of the rope tightening and locking device of this utility model; Figure 5 This is a three-dimensional enlarged view of the rope-pressing cylinder, fixing base, guide block, and rope-pressing block of this utility model; Figure 6 yes Figure 5 Enlarged view of point B in the middle; Figure 7 This is a three-dimensional enlarged view of the guide block in this utility model; Figure 8 This is a three-dimensional enlarged view of the fixing block, limiting pressure block and pull rod of this utility model; Figure 9 This is a three-dimensional enlarged view of the locking ring of this utility model; Figure 10 This is a three-dimensional enlarged view of the carrier in this utility model; Figure 11 This is another three-dimensional enlarged view of the carrier in this utility model; Figure 12 This is a three-dimensional enlarged view of the outer covering fabric of the carrier in an unsealed state in this utility model; Figure 13 This is a three-dimensional enlarged view of the carrier covered with a cloth being positioned on the positioning seat in this utility model. Figure 14 This is a three-dimensional enlarged view of the carrier positioned on the positioning seat in this utility model; Figure 15 This is a three-dimensional enlarged view of the drawstring in this utility model, showing that the two ends of the drawstring located outside the covering fabric are in a reverse outward pulling state; Figure 16 This is a three-dimensional enlarged view of the locking ring positioned on the carrier in this utility model; Figure 17 This is a three-dimensional enlarged view of the locking ring and the carrier in a locked state in this utility model; Figure 18 This is a three-dimensional enlarged view of the carrier after the pull rope is closed, taken out of the positioning seat in this utility model.

[0021] Illustration: 1. Base; 11. Safety cover; 12. Fixing plate; 121. Slide rail; 13. Slide plate; 131. Slide rail; 14. Fixing block; 141. Hanging rod; 142. Spring; 2. Locking shaft; 21. Electric screwdriver; 22. Vertical movement cylinder; 3. Limiting block; 31. Through hole; 4. Clamping rope mechanism; 41. Rope pulling cylinder; 42. Pulling block; 421. Guide block; 4211. Guide groove; 4212. Slide groove; 422 423. Fixed base; 43. Bottom block; 44. Rope pressing cylinder; 45. Rope pressing block; 46. Anti-slip groove; 57. Positioning seat; 58. Positioning part; 59. Bearing surface; 60. Housing; 61. Top groove; 62. Locking block; 621. Limiting platform; 622. Locking hole; 623. Supporting part; 624. Positioning hole; 63. Carrier; 71. Locking ring; 72. Limiting hole; 73. Locking screw; 84. Cloth covering; 85. Draw rope; 86. Rope path. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below with reference to the accompanying drawings. The drawings are for reference and illustration only and do not constitute a limitation on the scope of patent protection of this utility model.

[0023] Reference Figures 1 to 18 A rope-pulling locking device includes a base 1. A positioning seat 5 is fixedly connected to the worktable of the base 1 to position a carrier 63 covered with a cloth 8. The base 1 is provided with two rope-pulling mechanisms 4 for clamping the two free ends of the rope 81 at the top opening of the cloth 8 and moving in opposite directions synchronously to achieve rope-pulling. The positioning seat 5 is located between the two rope-pulling mechanisms 4. An electric screwdriver 21 with lifting function is provided directly above the positioning seat 5 for fixing the locking ring 7 to the carrier 63.

[0024] Reference Figure 1 , Figure 2 , Figure 4 and Figure 13 The positioning seat 5 is vertically fixed on the worktable of the machine base 1. The machine base 1 is provided with a safety cover 11. The front of the safety cover 11 is provided with an operating port. The positioning seat 5, the two clamping rope mechanisms 4 and the electric screwdriver 21 are all located inside the safety cover 11. A cylindrical positioning part 51 is provided on the bearing surface 52 at the top of the positioning seat 5. The diameter of the positioning part 51 is smaller than the diameter of the fixed end of the positioning seat 5.

[0025] Reference Figure 2 , Figure 3 , Figure 4 and Figure 8 A fixed plate 12 is vertically fixed on the workbench of the machine base 1. The fixed plate 12 is located behind the positioning seat 5. Two slide rails 121 are spaced apart on the front of the fixed plate 12. Each slide rail 121 is arranged vertically along the fixed plate 12. A rectangular slide plate 13 is vertically slidably connected to the two slide rails 121 of the fixed plate 12. A vertical movement cylinder 22 is fixed to the upper end of the slide plate 13. An electric screwdriver 21 is set at the output end of the vertical movement cylinder 22 so that the electric screwdriver 21 can be vertically moved and set on the slide plate 13. A fixed block 14 is vertically fixed to the lower end of the slide plate 13. A limiting pressure block 3 is elastically hung on the fixed block 14 by a hanging rod 141. Specifically, the limiting pressure block 3 is located directly below the fixed block 14. The lower end of the hanging rod 141 is connected to the limiting pressure block 3. The top of the pressure block 3 is fixedly connected, and the upper end of the hanging rod 141 passes through the hanging hole of the fixed block 14 and is movably hung on the fixed block 14. The limiting pressure block 3 is elastically connected to the fixed block 14 through the spring 142. The spring 142 is sleeved on the hanging rod 141 and is located between the fixed block 14 and the limiting pressure block 3. The entire limiting pressure block 3 is L-shaped and located between the electric screwdriver 21 and the locking ring 7. The limiting pressure block 3 is slidably set on the sliding rail 131 on the front of the lower end of the slide plate 13 (the sliding rail 131 is vertically fixed to the front of the lower end of the slide plate 13). The end of the limiting pressure block 3 away from the spring 142 is provided with a through hole 31 through which the locking shaft 2 of the electric screwdriver 21 passes. The locking shaft 2 of the electric screwdriver 21 is located directly above the through hole 31 of the limiting pressure block 3 and the positioning seat 5.

[0026] Reference Figures 2 to 7 Two rope-clamping mechanisms 4 are symmetrically arranged. Each rope-clamping mechanism 4 includes a pull block 42 with a lateral movement function, a rope-pressing block 44 with a longitudinal movement function, a rope-pressing cylinder 43, and a rope-pulling cylinder 41. The pull block 42 is provided with a guide groove 4211 for receiving the free end of the draw rope 81. The guide groove 4211 is located on the top of the pull block 42 and is arranged along the pulling direction of the draw rope 81. The top of the pull block 42 is also provided with a sliding groove 4212, which is perpendicular to the guide groove 4211 and communicates with it. Specifically, the pull block 42 includes a fixed base 422, a guide block 421, and a bottom block 423 with a lateral movement function. The bottom block 423 is located on the end of the output shaft of the rope-pulling cylinder 41 and is controlled laterally by the rope-pulling cylinder 41. The moving rope-pulling cylinder 41 is fixed on the Z-shaped bracket of the workbench of the machine base 1. The fixed base 422 is L-shaped and fixed on the bottom block 423. The guide groove 4211 is located on the top of the guide block 421. The guide block 421 is U-shaped and fixed in the fixed base 422 to form the slide groove 4212. The rope-pressing block 44 is longitudinally slidably disposed in the slide groove 4212. The rope-pressing cylinder 43 is fixed outside the fixed base 422. The output shaft of the rope-pressing cylinder 43 passes through the fixed base 422 and is fixedly connected to the rope-pressing block 44. The rope-pressing cylinder 43 drives the rope-pressing block 44 to slide longitudinally in the slide groove 4212 to release or press the rope 81. In order to prevent the rope-pressing block 44 from slipping, multiple anti-slip grooves 441 are provided obliquely and at intervals on the rope-pressing surface (i.e., the front) of the rope-pressing block 44.

[0027] Reference Figure 10 , Figure 11 and Figure 12 The carrier 63 includes a locking block 62 and a housing 6. The housing 6 is spherical, specifically the outer shell of a spherical speaker. Both the top and bottom of the housing 6 are hollowed out. The top of the housing 6 has a top groove 61. The entire housing 6 is fitted onto the locking block 62. The locking block 62 is T-shaped. The diameter of the lower support portion 623 of the locking block 62 is larger than the diameter of the upper end. The support portion 623 is exposed outside the housing 6. The bottom of the support portion 623 has a positioning hole 624 along the axial direction of the locking block 62. The top of the locking block 62 passes through the housing 6 and extends outside the housing 6. The top groove 61 is arranged in a circle around the locking block 62. On the top surface of 2, a locking hole 622 and multiple limiting platforms 621 are provided along its axial direction. The locking hole 622 is a threaded hole. All the limiting platforms 621 are arranged in a circle around the locking hole 622 at intervals. Each limiting platform 621 is a long fan shape. All the limiting platforms 621 extend outside the shell 6. The lower end of the covering fabric 8 is fixed to the bottom hollow position of the shell 6 by the locking block 62. A loop of rope 82 is provided at the upper opening edge of the covering fabric 8 (the loop of rope 82 is formed by folding and sewing the fabric, and is hollow inside. The drawstring 81 can slide freely). The two ends of the drawstring 81 are located outside the loop of rope 82 and are arranged crosswise.

[0028] Reference Figure 2 , Figure 3 and Figure 9 The locking ring 7 is cylindrical in shape. Along its axial direction, the locking ring 7 has multiple elongated fan-shaped limiting holes 71 and a locking screw 72. The locking ring 7 is threadedly fixed to the locking hole 622 on the locking block 62 by the locking screw 72. All the limiting holes 71 correspond to all the limiting platforms 621 one by one. All the limiting platforms 621 are arranged in a circle around the locking screw 72 at intervals.

[0029] Reference Figures 1 to 18 The working principle of the pull rope locking device of this utility model is as follows: The carrier 63, wrapped with the cloth 8, is positioned on the positioning seat 5 (e.g., Figure 13 and Figure 14 The positioning part 51 of the positioning seat 5 is inserted into the positioning hole 624 at the bottom of the carrier 63, and the supporting part 623 is supported on the bearing surface 52 of the positioning seat 5. At this time, the top of the covering fabric 8 is in a loose state (e.g., Figure 12 The two ends of the drawstring 81 are located outside the rope channel 82 and are crossed, and the top edge of the housing 6 is exposed on the cover 8; Manually place both ends of the drawstring 81 into the guide grooves 4211 on the top of the left and right guide blocks 421 respectively. The left end rope pressing cylinder 43 drives the left end rope pressing block 44 to slide forward in the left end slide groove 4212, clamping the free end of the drawstring 81 located in the left end guide groove 4211. At the same time, the right end rope pressing cylinder 43 drives the right end rope pressing block 44 to slide forward in the right end slide groove 4212, clamping the free end of the drawstring 81 located in the right end guide groove 4211. The left-end pull cylinder 41 pulls the entire left-end pull block 42 to the left, causing the left-end pressing cylinder 43 and the left-end pressing block 44 to move to the left together, thus pulling the portion of the drawstring 81 located in the left-end guide groove 4211 to the left; simultaneously, the right-end pull cylinder 41 pulls the entire right-end pull block 42 to the right, causing the right-end pressing cylinder 43 and the right-end pressing block 44 to move to the right together, thus pulling the portion of the drawstring 81 located in the right-end guide groove 4211 to the right, causing the two free ends of the drawstring 81 to move synchronously in opposite directions, closing the top of the covering fabric 8 (as shown). Figure 15 At this time, the top groove 61 of the housing 6 is covered by the closed-end fabric 8; Position the locking ring 7 onto the multiple limiting platforms 621 on the top of the locking block 62 (e.g., Figure 16 ); The linear module on the back of the fixing plate 12 drives the entire slide plate 13 to move downwards. The electric screwdriver 21, fixing block 14, and limiting pressure block 3 move downwards together with the slide plate 13. The limiting pressure block 3 elastically presses down on the locking ring 7 (during the downward movement of the limiting pressure block 3, the two pull blocks 42 synchronously approach the carrier 63) until the locking ring 7 presses down the closing part of the wrapping fabric 8 into the top groove 61 at the top of the housing 6 (e.g., Figure 17), skateboard 13 stops moving downwards; The vertical cylinder 22 drives the electric screwdriver 21 to move downward. The electric screwdriver 21 controls its locking shaft 2 to rotate, so that the locking screw 72 in the center of the locking ring 7 is screwed into the locking hole 622 of the locking block 62, and the locking ring 7 and the locking block 62 are fixedly connected. The upper end of the cloth 8 can be locked to the housing 6. The two pull rope cylinders 41 and the two pressure rope cylinders 43 are reset, and the two ends of the draw rope 81 are released. After the electric screwdriver 21 and the limit block 3 are reset, the locking ring 7 is released, and the carrier 63 (such as the one with the locking ring 7) can be removed. Figure 18 The cloth 8 can then be fixedly wrapped around the carrier 63 for the next work station.

[0030] This utility model discloses a pull-cord locking device. A positioning seat 5 is fixedly connected to the worktable of the base 1 to accurately position and place the carrier 63 covered with a fabric covering 8. Two pull-cord clamping mechanisms 4 are installed on the base 1 to clamp the two free ends of the pull-cord 81 at the top opening of the fabric covering 8 and move synchronously in opposite directions to achieve the closing of the pull-cord 81. The positioning seat 5 is located between the two pull-cord clamping mechanisms 4. An electric screwdriver 21 with lifting function is installed directly above the positioning seat 5 to fix the locking ring 7 to the carrier 63. Using two sets of pull-cord clamping mechanisms 4 replaces manual pull-cord manipulation, directly saving manpower. Furthermore, by setting the tension value correctly, the force used for pulling the cord of each speaker product can be guaranteed to be the same, effectively avoiding the problem of the fabric covering 8 loosening due to uneven force during manual pull-cord manipulation. This fundamentally solves the problems of time-consuming, labor-intensive, and low-yield manual pull-cord manipulation, significantly improving speaker production efficiency and product quality.

[0031] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of protection of the present utility model. Therefore, any equivalent changes made in accordance with the scope of the patent application of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A rope tightening and locking device, comprising a base, characterized in that, A positioning seat is fixedly connected to the worktable of the machine base to position and place the carrier covered with the covering fabric. The machine base is provided with two rope clamping mechanisms for clamping the two free ends of the drawstring at the top opening of the covering fabric and moving in opposite directions synchronously to achieve the rope closing. The positioning seat is located between the two rope clamping mechanisms. An electric screwdriver with lifting function is provided directly above the positioning seat for fixing the locking ring to the carrier.

2. The rope tightening and locking device according to claim 1, characterized in that, The two clamping and pulling rope mechanisms are symmetrically arranged. Each clamping and pulling rope mechanism includes a pulling block with a lateral movement function and a pressing rope block with a longitudinal movement function. The pulling block is provided with a guide groove for receiving the free end of the pulling rope. The pressing rope block is longitudinally slidably arranged on the pulling block to release or press the pulling rope.

3. The rope tightening and locking device according to claim 2, characterized in that, The rope pressing block has multiple anti-slip grooves arranged obliquely and at intervals on its rope pressing surface.

4. The rope tightening and locking device according to claim 2, characterized in that, The guide groove is located at the top of the pull block and is set along the pulling direction of the rope. The top of the pull block is provided with a sliding groove, which is perpendicular to the guide groove and communicates with it. The rope pressing block is slidably set in the sliding groove.

5. The rope tightening and locking device according to claim 4, characterized in that, The pull block includes a fixed base, a guide block, and a bottom block with lateral movement function. The fixed base is L-shaped and fixed to the bottom block. The guide block is U-shaped and fixed inside the fixed base to form the sliding groove. The guide groove is located at the top of the guide block.

6. The rope tightening device according to claim 1, characterized in that, A fixed plate is vertically fixed on the workbench of the machine base, and a sliding plate is vertically slidably connected to the fixed plate. The electric screwdriver is vertically movable and mounted on the sliding plate.

7. The rope tightening device according to claim 6, characterized in that, A limiting block is elastically attached to the fixed block of the skateboard via a hanging rod. The limiting block is located between the electric screwdriver and the locking ring. The limiting block has a through hole through which the locking shaft of the electric screwdriver passes.

8. The rope tightening device according to claim 7, characterized in that, The limiting block is elastically connected to the fixed block by a spring, and the spring is sleeved on the hanging rod and located between the fixed block and the limiting block.

9. The rope tightening device according to claim 1, characterized in that, The carrier includes a locking block and a housing. The housing is fitted onto the locking block. The top surface of the locking block is provided with a locking hole. The locking ring is threadedly fixed to the locking hole by a locking screw.

10. The rope tightening device according to claim 9, characterized in that, The top of the locking block is provided with multiple limiting platforms at intervals, and the locking ring is provided with multiple limiting holes that correspond to and cooperate with all the limiting platforms. All the limiting platforms are arranged in a circle around the locking screw at intervals.

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