Amplitude adjustment mechanism for a cylindrical fabric spreading machine

Abstract

This utility model belongs to the field of composite machinery and shaping machinery technology, specifically relating to a amplitude adjustment mechanism for a cylindrical fabric spreading machine. It comprises two sets of mechanisms symmetrically arranged inside the drum. Each amplitude adjustment mechanism includes a motor base, an amplitude adjustment seat, a swing seat, a first drive mechanism, a second drive mechanism, a swing spreading die, a swing pin, and a limiting block. The first drive mechanism coarsely adjusts the axial position of the amplitude adjustment seat according to the preset fabric width to ensure stable fabric width at the outlet. The second drive mechanism precisely drives the limiting block to reciprocate based on the real-time offset detection signal of the inlet fabric, and simultaneously finely adjusts the angle of the swing spreading die to achieve dynamic and automatic correction of fabric offset.

Description

Technical Field

[0001] This utility model belongs to the field of composite machinery and shaping machinery technology, and specifically relates to an amplitude adjustment mechanism for a cylindrical fabric spreading machine. Background Technology

[0002] In the production processes of lamination and shaping, elastic materials usually need to be stretched to a certain width to meet the requirements of lamination and shaping.

[0003] Patent application number 202411890406.1 discloses a fabric spreading machine. A first guide cylinder and a second guide cylinder are located inside a multi-grooved circular tube. The position of the first guide cylinder is adjusted in real time according to a sensing system. The first guide cylinder guides the guide wheel of the nail plate, adjusting the position of the nail plate so that the nail plate can fix the fabric boundary at the feed inlet of the fabric spreading machine. During the rotation of the multi-grooved circular tube, the nail plate guide wheel is pushed onto the second guide cylinder, which guides the guide wheel on the nail plate, expanding the fabric to the specified width. However, this design suffers from complex structure and high cost. Utility Model Content

[0004] Therefore, in view of the problems of complex structure and high cost in the existing technology, this utility model provides an amplitude adjustment mechanism for a cylindrical fabric spreading machine, which aims to provide an amplitude adjustment mechanism for a cylindrical fabric spreading machine with reduced structural complexity and lower cost while maintaining the same function.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an amplitude adjustment mechanism for a cylindrical fabric spreading machine, the cylindrical fabric spreading machine comprising a fixed assembly, a rotating assembly, a needle plate assembly, and an amplitude adjustment mechanism; the fixed assembly is fixed at both ends and connected as a whole in the middle by a guide rod; the rotating assembly is cylindrical and rotates outside the fixed assembly, and several grooves are provided on the circumference of the rotating assembly; the needle plate assembly includes several needle plate carriages and elastic silicone strips, the needle plate carriages can slide in the grooves, and the needle plate carriages are provided with upwardly extending needle plates and downwardly extending template wheels.

[0006] The amplitude adjustment mechanism of this utility model is provided in two sets, symmetrically arranged inside the rotating assembly. The amplitude adjustment mechanism includes a motor base, an amplitude adjustment base, a swing base, a first drive mechanism, a second drive mechanism, a swing opening mold, a swing pin, and a limiting block. The motor base and the fixed assembly are fixedly connected to each other. The amplitude adjustment base is slidably connected to the guide rod. The amplitude adjustment base is driven by the first drive mechanism to slide on the guide rod. The swing base extends horizontally outward on the amplitude adjustment base. The swing base is hinged to a swing opening mold through a swing pin. The second drive mechanism is also installed on the amplitude adjustment base. The movable end of the second drive mechanism is connected to the limiting block. The limiting block abuts against the swing opening mold. The swing opening mold has an annular contact surface. The template wheel abuts against the annular contact surface of the swing opening mold under the pre-tightening force of the elastic silicone strip.

[0007] Furthermore, the limiting block is a single limiting ball head.

[0008] Furthermore, the limiting block is flat, and two limiting ball heads are provided on the limiting block, which is slidably mounted on the guide rod.

[0009] Furthermore, the motor mount and the mounting assembly are connected by a linkage.

[0010] Furthermore, the main body of the swing-opening mold is elliptical plate-shaped and has holes to avoid interference with the guide rod and connecting rod.

[0011] Furthermore, the first drive mechanism includes a first servo motor, a lead screw, and a lead screw nut. The two ends of the lead screw are rotatably connected to the left support and the motor base respectively through bearings. The first servo motor is mounted on the motor base and connected to the lead screw.

[0012] Furthermore, the second drive mechanism includes the first servo electric cylinder.

[0013] Furthermore, the angle between the working plane and the axis of the swing-opening mold is in the range of 50°-70°.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model can automatically correct deviations, with precise and efficient functions. The first drive mechanism of this utility model coarsely adjusts the axial position of the adjustment seat according to the preset fabric width to ensure the stability of the exit fabric width. The second drive mechanism precisely drives the limit block to reciprocate based on the real-time offset detection signal of the inlet fabric, and links it to finely adjust the opening die angle. Under the pre-tension of the elastic silicone strip, the guide wheel of the needle plate carriage closely follows the outline of the opening die, converting the outline change into the axial displacement of the needle plate inlet, realizing dynamic and automatic correction of fabric deviation, and effectively improving the flatness and quality of the fabric.

[0016] 2. The structure of this utility model is relatively simple, easy to install, and has a low cost. Attached Figure Description

[0017] Figure 1 This is a perspective view of a cylindrical fabric spreading machine in Embodiment 1 (with some profile spokes and needle plate components removed, and the right end exploded).

[0018] Figure 2 yes Figure 1 A magnified view of a portion of the image;

[0019] Figure 3 This is a perspective view of the fixing component and amplitude adjustment mechanism in Embodiment 1;

[0020] Figure 4 This is a perspective view of the left-side amplitude modulation mechanism in Embodiment 1;

[0021] Figure 5 This is a top sectional view of the left amplitude modulation mechanism in Embodiment 1;

[0022] Figure 6 This is a perspective view of the left-side amplitude modulation mechanism in Embodiment 2.

[0023] In the picture:

[0024] 100 Fixed assembly; 101 Guide rod;

[0025] 200 rotating assembly;

[0026] 300 Needle plate assembly; 301 Needle plate carriage; 302 Elastic silicone strip;

[0027] 400 Amplitude adjustment mechanism; 401 Motor base; 402 Amplitude adjustment base; 403 Swing base; 404 First drive mechanism; 4041 First servo motor; 4042 Lead screw; 4043 Lead screw nut; 405 Second drive mechanism; 406 Swing opening mold; 407 Swing pin; 408 Limiting block; 409 Connecting rod. Detailed Implementation

[0028] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention. Example 1

[0029] See attached document Figure 1-5An amplitude adjustment mechanism 400 for a cylindrical fabric spreading machine is disclosed. This amplitude adjustment mechanism 400 is applied to a cylindrical fabric spreading machine, which includes a fixed component 100, a rotating component 200, a needle plate assembly 300, and an amplitude adjustment mechanism 400. The fixed component 100 is fixed at both ends and connected as a whole in the middle by a guide rod 101. The rotating component 200 is cylindrical and rotates outside the fixed component 100. Several grooves are provided on the circumference of the rotating component 200. The needle plate assembly 300 includes several needle plate carriages 301 and elastic silicone strips 302. The needle plate carriages 301 can slide in the grooves. The needle plate carriages 301 are provided with needle plates extending upward and template wheels extending downward.

[0030] The amplitude adjustment mechanism 400 described in this solution is provided in two sets, symmetrically arranged inside the rotating assembly 200. Each amplitude adjustment mechanism 400 includes a motor base 401, an amplitude adjustment base 402, a swing base 403, a first drive mechanism 404, a second drive mechanism 405, a swing opening mold 406, a swing pin 407, and a limiting block 408. The motor base 401 is slidably connected to the guide rod 101 and is relatively fixedly connected to the fixing assembly 100 via a connecting rod 409. The amplitude adjustment base 402 is slidably connected to the guide rod 101 and is driven by the first drive mechanism 404 to slide on the guide rod 101. An oscillating seat 403 extends horizontally outward from the amplitude adjustment seat 402. An oscillating opening mold 406 is hinged to the oscillating seat 403 via an oscillating pin 407. A second driving mechanism 405 is also installed on the amplitude adjustment seat 402. The movable end of the second driving mechanism 405 is connected to a limiting block 408. The limiting block 408 is a single limiting ball head. The limiting ball head abuts against the oscillating opening mold 406. The oscillating opening mold 406 has an annular working profile. The template wheel abuts against the annular working profile of the oscillating opening mold 406 under the pre-tightening force of the elastic silicone strip 302. The first drive mechanism 404 drives the amplitude adjustment seat 402 to slide axially along the guide rod 101, changing its left and right positions to achieve coarse adjustment of the overall axial position of the needle plate carriage 301. This position determines the width of the fabric after stretching. The second drive mechanism 405 drives the limiting block 408 to move, pushing or releasing the swing opening mold 406 to rotate around the swing pin 407, changing the angle of its working contour to achieve fine adjustment of the needle plate carriage 301 in the circumferential direction, adjusting according to the width of the fabric before stretching. The template wheel, under the pre-tightening force of the elastic silicone strip 302, closely adheres to the working contour of the swing opening mold 406, converting the contour change into the axial displacement of the needle plate carriage 301. In operation, when the rotating component 200 rotates, it drives the left and right needle plate carriages 301 to reciprocate along the swing opening mold 406, achieving material stretching. The swing pin 407 is set as the needle plate outlet, and the corresponding position of the limiting block 408 is set as the needle plate inlet. The first drive mechanism 404 adjusts the position of the amplitude adjustment seat 402 according to the width of the fabric after stretching. Generally, the same fabric is set differently to ensure the width of the fabric exit. When the material at the needle plate inlet deviates, the second drive mechanism 405 pushes the limit block 408 to reciprocate, which in turn drives the template wheel and the needle plate carriage 301 to reciprocate, thereby correcting the deviation at the needle plate inlet.

[0031] In practical applications, the first drive mechanism 404 includes a first servo motor 4041, a lead screw 4042, and a lead screw nut 4043. The two ends of the lead screw 4042 are rotatably connected to the left support and the motor base 401 respectively via bearings. The first servo motor 4041 is mounted on the motor base 401 and connected to the lead screw 4042. The first servo motor 4041 provides precise speed and position control; the lead screw nut 4043 precisely converts rotational motion into linear motion, achieving high-precision, repeatable positioning of the amplitude adjustment seat 402. The structure is mature and reliable.

[0032] In practical applications, the second drive mechanism 405 includes a first servo electric cylinder. The servo electric cylinder has a high degree of integration and a compact structure, enabling precise and rapid adjustment of the position of the limit block 408.

[0033] In practical applications, the angle between the working plane and the axis of the swing-opening mold 406 is in the range of 50°-70°.

[0034] In practical applications, the main body of the swing opening mold 406 is an elliptical plate with holes. The hole design ensures that there is no motion interference between the swing opening mold 406 and the guide rod 101 and the connecting rod 409 during the swinging and amplitude adjustment process, thus ensuring the smooth operation of the mechanism. Example 2

[0035] like Figure 6 As shown, the difference from Embodiment 1 is that the limiting block 408 in this solution is flat, and two limiting ball heads are provided on the limiting block 408. The limiting block 408 is slidably mounted on the guide rod 101. The two limiting ball heads, together with the swing pin 407, achieve three-point positioning of the swing opening mold 406. Compared with single-point contact of a single ball head, this significantly enhances the constraint rigidity of the swing opening mold 406, effectively suppresses possible swaying or vibration during its operation, and ensures the accuracy of the opening contour.

[0036] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0037] The above are merely preferred embodiments of this utility model. Any person skilled in the art may modify this utility model or modify it into an equivalent technical solution using the technical solutions described above. Therefore, any simple modifications or equivalent substitutions made based on the technical solutions of this utility model are within the scope of protection claimed by this utility model.

Claims

1. An amplitude adjustment mechanism for a cylindrical fabric spreading machine, the cylindrical fabric spreading machine comprising a fixed assembly (100), a rotating assembly (200), a needle plate assembly (300), and an amplitude adjustment mechanism (400); the fixed assembly (100) is fixed at both ends and connected as a whole in the middle by a guide rod (101); the rotating assembly (200) is cylindrical and rotates outside the fixed assembly (100); a plurality of grooves are provided on the circumference of the rotating assembly (200); the needle plate assembly (300) comprises a plurality of needle plate carriages (301) and elastic silicone strips (302); the needle plate carriages (301) are capable of sliding in the grooves; the needle plate carriages (301) are provided with needle plates extending upward and template wheels extending downward, characterized in that: Two sets of amplitude adjustment mechanisms (400) are symmetrically arranged inside the rotating assembly (200). Each amplitude adjustment mechanism (400) includes a motor base (401), an amplitude adjustment base (402), a swing base (403), a first drive mechanism (404), a second drive mechanism (405), a swing opening mold (406), a swing pin (407), and a limiting block (408). The motor base (401) and the fixed assembly (100) are fixedly connected. The amplitude adjustment base (402) is slidably connected to the guide rod (101). The amplitude adjustment base (402) is driven by the first drive mechanism (404) to slide on the guide rod (101). A swing seat (403) extends horizontally outward from the amplitude adjustment seat (402). The swing seat (403) is hinged to a swing opening mold (406) via a swing pin (407). A second drive mechanism (405) is also installed on the amplitude adjustment seat (402). The movable end of the second drive mechanism (405) is connected to a limit block (408). The limit block (408) abuts against the swing opening mold (406). The swing opening mold (406) has an annular contact surface. The template wheel abuts against the annular contact surface of the swing opening mold (406) under the pre-tightening force of the elastic silicone strip (302).

2. The amplitude adjustment mechanism of a cylindrical fabric spreading machine according to claim 1, characterized in that: The limiting block (408) is a single limiting ball head.

3. The amplitude adjustment mechanism of a cylindrical fabric spreading machine according to claim 1, characterized in that: The limiting block (408) is flat and has two limiting ball heads. The limiting block (408) is slidably mounted on the guide rod (101).

4. The amplitude adjustment mechanism of a cylindrical fabric spreading machine according to any one of claims 1-3, characterized in that: The motor mount (401) and the fixing assembly (100) are connected by a connecting rod (409).

5. The amplitude adjustment mechanism of a cylindrical fabric spreading machine according to any one of claims 1-3, characterized in that: The main body of the swing opening mold (406) is an elliptical plate with holes to avoid interference with the guide rod (101) and the connecting rod (409).

6. The amplitude adjustment mechanism of a cylindrical fabric spreading machine according to any one of claims 1-3, characterized in that: The first drive mechanism (404) includes a first servo motor (4041), a lead screw (4042), and a lead screw nut. The two ends of the lead screw (4042) are rotatably connected to the left support and the motor base (401) respectively through bearings. The first servo motor (4041) is mounted on the motor base (401) and connected to the lead screw (4042).

7. The amplitude adjustment mechanism of a cylindrical fabric spreading machine according to any one of claims 1-3, characterized in that: The second drive mechanism (405) includes the first servo electric cylinder.

8. The amplitude adjustment mechanism of a cylindrical fabric spreading machine according to any one of claims 1-3, characterized in that: The angle between the working plane and the axis of the swing-opening die (406) is in the range of 50°-70°.

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