Cloth alignment structure and pre-seaming machine

Abstract

The utility model relates to the technical field of cloth sewing, especially a kind of cloth alignment structure and pre-seaming machine, it include: mounting bracket, support setting is on pre-seaming machine main body;Alignment mechanism, setting is on mounting bracket, for guiding cloth;Clamping mechanism, setting is on mounting bracket, for clamping the cloth of alignment;Wherein, alignment mechanism includes: guide bracket, with mounting bracket fixed connection;Two conveying rollers, two conveying rollers are all horizontally rotatory setting in guide bracket, for conveying cloth;Two side blocking rollers, two side blocking rollers are vertically rotatory installation in guide bracket;Clamping mechanism includes: clamping bracket, with mounting bracket fixed connection;Two guide rods, two guide rods are all fixed installation in clamping bracket, and two guide rods are parallel to each other;Two clamping jaws, two clamping jaws symmetrically slide setting are in, two guide rods;Two clamping blocks, two clamping blocks are respectively fixed installation in two clamping jaws;Driving mechanism, setting is on clamping bracket.

Description

Technical Field

[0001] This utility model relates to the technical field of fabric sewing, and in particular to a fabric alignment structure and a pre-sewing machine. Background Technology

[0002] In many industries involving fabric processing, such as textiles, apparel, and home furnishings, the pre-sewing process is a crucial step in the product manufacturing process. The quality and efficiency of pre-sewing directly affect the smooth progress of subsequent sewing processes and the quality of the final product.

[0003] In traditional fabric pre-sewing processes, numerous problems exist in fabric alignment and clamping, severely restricting production efficiency and product quality. Fabric alignment lacks an effective guiding mechanism. During fabric transport, inherent unevenness and irregular edges, coupled with the lack of precise guiding devices, easily lead to fabric shifting and twisting, resulting in inaccurate edge alignment. This not only increases the difficulty of subsequent sewing processes but can also cause quality issues such as skewed stitches and dimensional deviations, affecting the product's appearance and performance. Secondly, the fabric clamping process struggles to ensure the fabric remains taut and fixed in position throughout the pre-sewing process. During pre-sewing, the fabric may loosen or shift due to factors such as the pulling of the sewing needle and machine vibration, leading to uneven stitching, skipped stitches, and other problems, reducing pre-sewing quality. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a fabric alignment structure and pre-sewing machine that improves pre-sewing quality and reduces defect rate.

[0005] This utility model provides a fabric alignment structure, comprising:

[0006] The mounting bracket is supported on the main body of the pre-sewing machine.

[0007] An alignment mechanism, mounted on a mounting bracket, is used to guide the fabric.

[0008] A clamping mechanism, mounted on a mounting bracket, is used to clamp and align the fabric.

[0009] The alignment mechanism includes:

[0010] The guide bracket is fixedly connected to the mounting bracket;

[0011] Two conveyor rollers, both horizontally rotating on the guide bracket, are used to convey the fabric.

[0012] Two side rollers are vertically and rotatably mounted on the guide bracket;

[0013] The clamping mechanism includes:

[0014] The clamping bracket is fixedly connected to the mounting bracket.

[0015] Two guide rods are fixedly mounted on the clamping bracket, and the two guide rods are parallel to each other;

[0016] Two grippers are symmetrically slidably mounted on two guide rods;

[0017] Two clamping blocks are fixedly installed on two grippers respectively;

[0018] The drive mechanism, mounted on the clamping bracket, is used to drive the two grippers to slide.

[0019] As a preferred embodiment of this utility model, the alignment mechanism further includes:

[0020] The adjusting screw is rotatably mounted in the guide bracket;

[0021] Two bearing sliders are threadedly fitted onto an adjusting screw, and each bearing slider is rotatably equipped with a conveying roller.

[0022] The handle is fixedly connected to the outer end of the adjusting screw.

[0023] As a preferred embodiment of this utility model, the driving mechanism includes:

[0024] The drive plate is slidably mounted on the clamping bracket. Two oblique guide grooves are symmetrically arranged on the drive plate. The drive plate is driven to slide by a cylinder.

[0025] Two guide pins are fixedly installed on two grippers, and the two guide pins are slidably inserted into two inclined guide grooves.

[0026] As a preferred embodiment of this utility model, guide cylinders are rotatably fitted on both guide pins, and the guide cylinders are slidably disposed in the inclined guide grooves.

[0027] As a preferred embodiment of this utility model, two guide sleeves are symmetrically arranged at both ends of the drive plate, and two guide rods are symmetrically arranged on the clamping bracket. The two guide sleeves are slidably fitted onto the two guide rods respectively.

[0028] As a preferred embodiment of this utility model, the clamping bracket is provided with two limiting pins, which are used to limit the sliding stroke of the drive plate.

[0029] As a preferred embodiment of this utility model, the limiting pin is provided with a noise-reducing rubber pad at the limiting end.

[0030] Compared with existing technologies, the beneficial effects of this utility model are as follows: By setting conveyor rollers and side guide rollers, the conveyor rollers are responsible for conveying the fabric, while the side guide rollers limit the fabric from both sides, which can effectively solve the problems of fabric offset and twisting caused by unevenness and uneven edges in the traditional pre-sewing process, ensuring accurate alignment of the fabric edges; after the fabric edges are accurately aligned, the stitches of the sewn products are neater, and the dimensional deviation is effectively controlled, thereby improving the appearance quality and performance of the products and reducing the defect rate caused by inaccurate alignment; the clamping mechanism can ensure that the fabric is always taut and fixed in position during the pre-sewing process, effectively avoiding the problem of fabric loosening or displacement caused by sewing needle pulling, machine vibration and other factors; after the fabric is clamped and stabilized, the stitches are more uniform, reducing the occurrence of problems such as skipped stitches, improving the pre-sewing quality, and further improving the overall quality of the product. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of this utility model;

[0032] Figure 2 This is an enlarged structural diagram of the alignment mechanism;

[0033] Figure 3 This is an enlarged schematic diagram of the clamping mechanism;

[0034] Figure 4 This is a schematic diagram of the gripper installation structure;

[0035] The following are labels in the attached diagram: 1. Mounting bracket; 2. Alignment mechanism; 21. Guide bracket; 22. Conveyor roller; 23. Side guard roller; 24. Adjusting screw; 25. Bearing slider; 26. Rotary handle; 3. Clamping mechanism; 31. Clamping bracket; 32. Guide rod; 33. Gripper; 34. Clamping block; 35. Drive plate; 36. Guide pin; 37. Guide cylinder; 38. Guide sleeve block; 39. Guide support rod; 3a. Limit pin. Detailed Implementation

[0036] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0037] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0038] Reference Figures 1-4 This embodiment provides a fabric alignment structure and a pre-sewing machine, including:

[0039] Mounting bracket 1 is supported on the main body of the pre-sewing machine;

[0040] Alignment mechanism 2, mounted on mounting bracket 1, is used to guide the fabric;

[0041] Clamping mechanism 3, mounted on mounting bracket 1, is used to clamp the aligned fabric;

[0042] Alignment mechanism 2 includes:

[0043] The guide bracket 21 is fixedly connected to the mounting bracket 1;

[0044] Two conveying rollers 22 are horizontally rotatable on the guide bracket 21 and are used to convey the fabric.

[0045] Two side rollers 23 are vertically and rotatably mounted on the guide bracket 21;

[0046] Clamping mechanism 3 includes:

[0047] The clamping bracket 31 is fixedly connected to the mounting bracket 1;

[0048] Two guide rods 32 are fixedly installed on the clamping bracket 31, and the two guide rods 32 are parallel to each other;

[0049] Two grippers 33 are symmetrically slidably mounted on two guide rods 32;

[0050] Two clamping blocks 34 are fixedly mounted on two grippers 33 respectively;

[0051] The drive mechanism is mounted on the clamping bracket 31 and is used to drive the two grippers 33 to slide.

[0052] In this embodiment, the mounting bracket 1 serves as the supporting foundation for the entire alignment structure and pre-sewing machine, and is fixed to the main body of the pre-sewing machine. The fabric is placed into the alignment mechanism 2, and the guide bracket 21 is fixedly connected to the mounting bracket 1, providing installation positions for the conveying roller 22 and the side guide roller 23. The two horizontally rotating conveying rollers 22 begin to rotate, and the fabric is conveyed forward under the drive of the conveying rollers 22. During the conveying process, the two vertically rotating side guide rollers 23 are located on both sides of the fabric, respectively, and play a limiting role for the fabric. When the edge of the fabric becomes uneven or shifts to one side, the side guide rollers 23 will prevent the fabric from shifting further, guiding the fabric to maintain a straight conveying, thereby achieving accurate alignment of the fabric edge. The aligned fabric continues to move forward and reaches the position of the clamping mechanism 3. The clamping bracket 31 is fixedly connected to the mounting bracket 1, providing support for other components of the clamping mechanism 3. Two parallel guide rods 32 are fixedly installed on the clamping bracket 31, and two grippers 33 are symmetrically slidably arranged on the guide rods 32. The clamping blocks 34 are fixedly installed on the grippers 33 respectively. The drive mechanism is started. The two grippers 33 slide towards each other on the guide rod 32, causing the two clamping blocks 34 to move closer together, thus clamping the fabric tightly and ensuring that the fabric remains taut and fixed in position throughout the pre-sewing process. By setting up a conveyor roller 22 and side guide rollers 23, the conveyor roller 22 is responsible for conveying the fabric, while the side guide rollers 23 limit the fabric from both sides. This effectively solves the problems of fabric shifting and twisting caused by unevenness and irregular edges during traditional pre-sewing, ensuring accurate alignment of the fabric edges. With accurate fabric edge alignment, the stitches of the sewn products are neater, and dimensional deviations are effectively controlled, thereby improving the product's appearance quality and performance, and reducing the defect rate caused by inaccurate alignment. The clamping mechanism 3 ensures that the fabric remains taut and fixed in position throughout the pre-sewing process, effectively avoiding fabric loosening or shifting caused by factors such as sewing needle pulling and machine vibration. After the fabric is clamped and stabilized, the stitches are more uniform, reducing skipped stitches and improving the pre-sewing quality, further enhancing the overall quality of the product.

[0053] As a preferred embodiment of the above technical solution, such as Figure 2 As shown, the alignment mechanism 2 also includes:

[0054] The adjusting screw 24 is rotatably mounted in the guide bracket 21;

[0055] Two bearing sliders 25 are threadedly fitted onto the adjusting screw 24, and each bearing slider 25 is rotatably equipped with a conveying roller 22.

[0056] The handle 26 is fixedly connected to the outer end of the adjusting screw 24;

[0057] In this embodiment, the operator manually rotates the handle 26, which causes the adjusting screw 24 to rotate within the guide bracket 21. When the adjusting screw 24 rotates, the two bearing sliders 25 move along the axial direction of the adjusting screw 24, thus adjusting the positions of the two conveying rollers 22 accordingly. By adjusting the position of the conveying rollers 22, it can be ensured that the fabric maintains appropriate tension during the conveying process. Combined with the limiting effect of the side guard rollers 23, this further improves the accuracy of fabric edge alignment, reduces subsequent sewing problems caused by inaccurate alignment, and improves product quality.

[0058] Specifically, such as Figures 3 to 4 As shown, the drive mechanism includes:

[0059] The drive plate 35 is slidably mounted on the clamping bracket 31. Two inclined guide grooves are symmetrically arranged on the drive plate 35. The drive plate 35 is driven to slide by a cylinder.

[0060] Two guide pins 36 are fixedly installed on two grippers 33 respectively, and the two guide pins 36 are slidably inserted into two inclined guide grooves respectively;

[0061] In this embodiment, when the fabric is aligned by the alignment mechanism 2 and reaches the designated position of the clamping mechanism 3, the cylinder starts working, pushing the drive plate 35 to slide on the clamping bracket 31. Since two inclined guide grooves are symmetrically arranged on the drive plate 35, when the drive plate 35 slides, the inclined guide grooves will move relative to the guide pins 36. According to the inclination direction and movement trajectory of the inclined guide grooves, the guide pins 36 will slide in the inclined guide grooves and be squeezed by the side wall of the inclined guide grooves. Under the squeezing action of the inclined guide grooves on the guide pins 36, the two guide pins 36 will drive the two grippers 33 to slide symmetrically on the guide rod 32, so that the two grippers 33 move closer to each other. As the grippers 33 move, the two clamping blocks fixedly installed on the grippers 33... The two grippers 34 will also move closer to each other, eventually clamping the fabric tightly. Driven by a cylinder, the drive plate 35 slides, and with the cooperation of the inclined guide groove and guide pin 36, the two grippers 33 can move closer to each other synchronously and smoothly, thus stably clamping the fabric. This ensures that the fabric remains taut and in a fixed position throughout the pre-sewing process, avoiding problems such as uneven stitching and skipped stitches caused by fabric loosening or shifting, thereby improving the pre-sewing quality. By adjusting the pressure of the cylinder, the pushing force of the drive plate 35 can be changed, thereby adjusting the clamping force of the grippers 33. This allows the clamping mechanism 3 to adapt to fabrics of different thicknesses and materials, ensuring that the fabric is not damaged while being clamped, thus improving the versatility and flexibility of the equipment.

[0062] More specifically, such as Figure 4 As shown, guide cylinders 37 are rotatably mounted on both guide pins 36, and the guide cylinders 37 are slidably disposed in the inclined guide grooves;

[0063] In this embodiment, the guide cylinder 37 is rotatably mounted on the guide pin 36. It can rotate when sliding in the inclined guide groove, which transforms the sliding friction between the guide pin 36 and the side wall of the inclined guide groove into rolling friction, greatly reducing the friction force. This not only reduces the resistance when the drive plate 35 slides, making the operation of the clamping mechanism 3 smoother, but also reduces the heat and wear generated by friction, extending the service life of the equipment.

[0064] Furthermore, such as Figure 3 As shown, two guide sleeves 38 are symmetrically arranged at both ends of the drive plate 35, and two guide rods 39 are symmetrically arranged on the clamping bracket 31. The two guide sleeves 38 are slidably fitted onto the two guide rods 39 respectively.

[0065] In this embodiment, the cooperation between the guide sleeve 38 and the guide rod 39 provides precise guidance for the sliding of the drive plate 35, ensuring that the drive plate 35 can only move in a straight line along the direction of the guide rod 39. This avoids the drive plate 35 from deviating or shaking during the sliding process, thereby ensuring the accurate movement direction of the gripper 33 and enabling the two grippers 34 to accurately approach or move away from each other, improving the fabric clamping accuracy. The combination of the guide rod 39 and the guide sleeve 38 restricts the degree of freedom of the drive plate 35, reducing its shaking and vibration during the sliding process. This makes the movement of the drive plate 35 more stable, which in turn makes the movement of the gripper 33 more stable. This helps to ensure that the fabric is subjected to uniform force during the clamping process, avoiding fabric deformation or damage due to uneven clamping force, and improving the pre-sewing quality.

[0066] Furthermore, such as Figure 4 As shown, the clamping bracket 31 is provided with two limit pins 3a, which are used to limit the sliding stroke of the drive plate 35;

[0067] In this embodiment, the limiting pin 3a can precisely limit the sliding stroke of the drive plate 35, so that the two clamping blocks 34 can clamp the fabric to the same force and position each time. This helps to ensure that the fabric is always taut and fixed in position during the pre-sewing process, avoiding fabric deformation, loosening or displacement due to excessive or insufficient clamping force or inaccurate clamping position, thereby improving the pre-sewing quality. Through the limiting effect of the limiting pin 3a, the fabric clamping operation can be realized quickly and accurately, reducing the time required for repeated adjustments due to incomplete clamping and improving production efficiency.

[0068] Furthermore, the limiting pin 3a is provided with a noise-reducing rubber pad at the limiting end;

[0069] In this embodiment, at the moment the drive plate 35 contacts the limiting pin 3a, the presence of the noise-reducing rubber pad absorbs and buffers the energy generated by the collision, reduces the sharp noise generated by direct metal-to-metal collision, improves the working environment, reduces the damage of noise to the operator's hearing, and improves the comfort of the workplace. At the same time, the buffering effect of the noise-reducing rubber pad can reduce the impact force between the drive plate 35 and the limiting pin 3a, avoid wear and damage to the drive plate 35 and the limiting pin 3a due to violent collision, extend the service life of the equipment, reduce the maintenance cost and replacement frequency of the equipment, and improve the reliability and stability of the equipment.

[0070] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A fabric alignment structure, characterized in that, include: The mounting bracket is supported on the main body of the pre-sewing machine. An alignment mechanism, mounted on the mounting bracket, is used to guide the fabric. A clamping mechanism, mounted on the mounting bracket, is used to clamp the aligned fabric. The alignment mechanism includes: The guide bracket is fixedly connected to the mounting bracket; Two conveying rollers, both of which are horizontally rotatable on the guide bracket, are used to convey the fabric; Two side rollers are vertically and rotatably mounted on the guide bracket; The clamping mechanism includes: The clamping bracket is fixedly connected to the mounting bracket; Two guide rods are fixedly installed on the clamping bracket, and the two guide rods are parallel to each other. Two grippers are symmetrically slidably disposed on the two guide rods; Two clamping blocks are respectively fixedly mounted on two grippers; A drive mechanism is provided on the clamping bracket to drive the two grippers to slide.

2. The fabric alignment structure as described in claim 1, characterized in that, The alignment mechanism further includes: The adjusting screw is rotatably mounted in the guide bracket; Two bearing sliders are threadedly fitted onto the adjusting screw, and each bearing slider is rotatably mounted with a conveying roller; The handle is fixedly connected to the outer end of the adjusting screw.

3. The fabric alignment structure as described in claim 1, characterized in that, The drive mechanism includes: A drive plate is slidably mounted on the clamping bracket. Two oblique guide grooves are symmetrically arranged on the drive plate. The drive plate is driven to slide by a cylinder. Two guide pins are fixedly installed on the two grippers respectively, and the two guide pins are slidably inserted into the two inclined guide grooves respectively.

4. The fabric alignment structure as described in claim 3, characterized in that, Each of the two guide pins is rotatably fitted with a guide cylinder, which is slidably disposed in the inclined guide groove.

5. The fabric alignment structure as described in claim 3, characterized in that, Two guide sleeves are symmetrically arranged at both ends of the drive plate, and two guide rods are symmetrically arranged on the clamping bracket. The two guide sleeves are slidably fitted onto the two guide rods respectively.

6. The fabric alignment structure as described in claim 3, characterized in that, The clamping bracket is provided with two limiting pins, which are used to limit the sliding stroke of the drive plate.

7. The fabric alignment structure as described in claim 6, characterized in that, The limiting pin is equipped with a noise-reducing rubber pad at its limiting end.

8. A pre-sewing machine, characterized in that, The fabric alignment structure described in any one of claims 1-7 is adopted.

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