Curved product sewing machine

Abstract

This utility model discloses a curved surface sewing machine, including a frame, a sewing machine head fixed on the frame, and a product support assembly mounted on the frame below the sewing machine head. The product support assembly includes a fixed cylinder fixed to the frame, and a movable cylinder surrounding the fixed cylinder. The movable cylinder is axially movable and circumferentially rotatable with the fixed cylinder and is assembled together with it. The movable cylinder is provided with a clamping device for fixing the curved surface product. Its advantages are: a reasonable structure; the product support assembly, composed of the fixed cylinder and the movable cylinder, matches the curved surface of the product, eliminating the need to flatten the curved surface product during sewing, thus improving sewing efficiency and quality.

Description

Technical Field

[0001] This utility model relates to the field of curved surface product sewing technology, specifically a curved surface product sewing machine. Background Technology

[0002] Curved products (such as hood flaps) are frequently encountered sewing components in the sewing process. Because the sewing platform is flat, curved products need to be flattened before sewing. To ensure sewing quality, the curved product must remain flat during the sewing process. For some softer curved products, such as those made of hard, curved leather, flattening is relatively easy. However, for curved products like hood flaps, which have a certain degree of hardness and resilience, flattening is more difficult. This forces workers to constantly apply pressure to keep the curved product flat during sewing, increasing labor intensity and affecting sewing quality, resulting in poor product consistency and low production efficiency. Therefore, it is necessary to design a sewing machine capable of sewing curved products. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned deficiencies and to disclose to the public a curved surface sewing machine with a reasonable structure that can improve production efficiency and product consistency.

[0004] The technical solution of this utility model is implemented as follows:

[0005] A curved surface sewing machine includes a frame, a sewing machine head fixed on the frame, and a product liner assembly mounted on the frame below the sewing machine head. The product liner assembly includes a fixed cylinder fixed to the frame, and a movable cylinder is provided outside the fixed cylinder. The movable cylinder is axially movable and circumferentially rotatable around an axis and is assembled with the fixed cylinder. The movable cylinder is provided with a clamping device for fixing the curved surface product.

[0006] Further optimization measures for this technical solution are as follows:

[0007] As an improvement, the specific structure enabling the movable cylinder to move axially is as follows: a first driving device is fixed on the frame, the first driving device is connected to a transmission shaft, a transmission belt is mounted on the transmission shaft, a movable frame is fixed on the transmission belt, and the movable cylinder is disposed on the movable frame. The first driving device drives the transmission belt to move, thereby realizing the axial movement of the movable cylinder on the movable frame.

[0008] As an improvement, the drive shaft is provided with drive belts on both sides of the sewing machine head, and the movable frame is provided with connecting seats, which are connected to the corresponding drive belts.

[0009] As an improvement, the specific structure enabling the movable cylinder to rotate circumferentially around its axis is as follows: a second drive device is mounted on the frame, a mounting base is mounted on the frame, a splined shaft is mounted on the mounting base, the second drive device is connected to the splined shaft for transmission, a first synchronous pulley is mounted on the splined shaft, a second synchronous pulley is connected to the movable cylinder, and the first and second synchronous pulleys are connected for transmission via a synchronous belt. Using a splined shaft allows the movable cylinder to rotate without affecting its axial movement.

[0010] As an improvement, a transmission gear is provided on the splined shaft, and the second driving device is connected to the transmission gear for transmission.

[0011] As an improvement, a positioning boss is provided on the outer side of the movable cylinder, and side positioning parts are provided on both sides of the movable cylinder. The positioning boss and side positioning parts are used to position the curved surface product to be sewn.

[0012] As an improvement, the clamping device includes a third driving device, a driving connector, and a chuck assembly. The middle part of the driving connector is hinged to the movable cylinder, one end of the driving connector is hinged to the extension rod of the third driving device, and the chuck assembly is fixed to the other end of the driving connector. The chuck assembly includes a base plate and a pressure head fixed to the base plate. The clamping device is used to fix the curved product on the product liner assembly.

[0013] As an improvement, the substrate includes a first mounting portion and a second mounting portion integrally formed and set at an obtuse angle, and pressure heads are respectively fixed on the first mounting portion and the second mounting portion.

[0014] As an improvement, the frame is provided with a first material box and a second material box on both sides of the product liner assembly. One material box is used to store products to be sewn, and the other material box is used to store sewn products. This arrangement can improve work efficiency.

[0015] The advantages of this utility model compared with the prior art are:

[0016] This utility model discloses a curved surface sewing machine with a reasonable structure. It uses a product liner assembly composed of a fixed cylinder and a movable cylinder to match the curved surface of the product. The product to be sewn is fixed by a clamping device on the movable cylinder. Through the axial movement and rotation of the movable cylinder, the sewing position is achieved directly below the sewing machine head, and the sewing is completed by the sewing machine head. This curved surface sewing machine can improve sewing efficiency and sewing quality. Attached Figure Description

[0017] Figure 1 This is a perspective structural diagram of an embodiment of the present utility model;

[0018] Figure 2 yes Figure 1 Enlarged view of section A in the middle;

[0019] Figure 3 This is a perspective view of another embodiment of the present utility model;

[0020] Figure 4 yes Figure 3 Enlarged view of section B in the middle;

[0021] Figure 5 This is a three-dimensional structural diagram from another perspective of an embodiment of this utility model;

[0022] Figure 6 yes Figure 5 Enlarged view of section C.

[0023] The names of the reference numerals in the accompanying drawings of this utility model are:

[0024] Frame 1, First material box 11, Second material box 12, Sewing machine head 2, Fixed cylinder 3, Movable cylinder 4, Positioning boss 41, Side positioning part 42, Clamping device 5, Third drive device 51, Extending rod 51a, Drive connector 52, Base plate 53, First mounting part 53a, Second mounting part 53b, Press head 54, First drive device 61, Drive shaft 62, Drive belt 63, Moving frame 64, Connecting seat 64a, Second drive device 71, Assembly seat 72, Spline shaft 73, Transmission gear 73a, First synchronous pulley 74, Second synchronous pulley 75, Synchronous belt 76. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings:

[0026] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the present invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0027] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0028] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0029] like Figures 1 to 6 As shown, a curved product sewing machine includes a frame 1, on which a sewing machine head 2 is fixed. A product liner assembly is mounted on the frame 1 below the sewing machine head 2. The product liner assembly includes a fixed cylinder 3 fixed to the frame 1. A movable cylinder 4 is fitted over the fixed cylinder 3. The movable cylinder 4 is axially movable and circumferentially rotatable around an axis and is assembled with the fixed cylinder 3. A clamping device 5 for fixing the curved product is provided on the movable cylinder 4.

[0030] The specific structure of the movable cylinder 4 that can move axially is as follows: a first driving device 61 is fixed on the frame 1, the first driving device 61 is connected to a transmission shaft 62, a transmission belt 63 is mounted on the transmission shaft 62, a movable frame 64 is fixed on the transmission belt 63, and the movable cylinder 4 is set on the movable frame 64.

[0031] The drive shaft 62 is provided with drive belts 63 on both sides of the sewing machine head 2, and the movable frame 64 is provided with a connecting seat 64a, which is connected to the corresponding drive belt 63.

[0032] The first drive device 61 is preferably a motor, and the first drive device 61 and the transmission shaft 62 are driven by gears. Working principle: the forward and reverse rotation of the first drive device 61 drives the transmission shaft 62 to rotate, and the transmission shaft 62 drives the transmission belt 63 wrapped around both ends of the transmission shaft 62 to move, which in turn drives the axial movement of the moving frame 64 through the connecting seat 64a, thereby realizing the axial movement (forward or backward) of the movable cylinder 4.

[0033] The specific structure of the movable cylinder 4, which can rotate circumferentially around its axis, is as follows: a second drive device 71 is provided on the frame 1; a mounting base 72 is provided on the frame 1; a splined shaft 73 is provided on the mounting base 72; the second drive device 71 is connected to the splined shaft 73 for transmission; a first synchronous pulley 74 is provided on the splined shaft 73; a second synchronous pulley 75 is connected to the movable cylinder 4; the first synchronous pulley 74 and the second synchronous pulley 75 are connected for transmission via a synchronous belt 76. The splined shaft 73 and the mounting base 72 are slidably fitted.

[0034] The splined shaft 73 is provided with a transmission gear 73a, and the second drive device 71 is connected to the transmission gear 73a for transmission.

[0035] The second drive device 71 is preferably a motor. The second drive device 71 is geared with the transmission gear 73a on the splined shaft 73. The use of the splined shaft 73 here allows the movable cylinder 4 to rotate without affecting its axial movement. Working principle: The rotation of the second drive device 71 drives the rotation of the splined shaft 73, which in turn drives the first synchronous pulley 74 to rotate. Then, the synchronous belt 76 drives the second synchronous pulley 75, thereby realizing the rotation of the movable cylinder 4.

[0036] The movable cylinder 4 has a positioning boss 41 on its outer side, and side positioning parts 42 are respectively provided on both sides of the movable cylinder 4. By using the positioning boss 41 and the side positioning parts 42 to position the product to be sewn, the accuracy of the product placement can be ensured.

[0037] The clamping device 5 includes a third driving device 51, a driving connector 52, and a chuck assembly. The middle part of the driving connector 52 is hinged to the movable cylinder 4, and one end of the driving connector 52 is hinged to the extension rod 51a of the third driving device 51. The chuck assembly is fixed to the other end of the driving connector 52. The chuck assembly includes a base plate 53 and a pressure head 54 fixed on the base plate 53.

[0038] The third driving device 51 is preferably a cylinder, which provides driving force to drive the driving connector 52 to rotate around the hinge point between the driving connector 52 and the movable cylinder 4, thereby driving the chuck assembly to press down or lift, so as to fix or loosen the product.

[0039] The substrate 53 includes a first mounting portion 53a and a second mounting portion 53b integrally formed and set at an obtuse angle, and pressure heads 54 are respectively fixed on the first mounting portion 53a and the second mounting portion 53b. This configuration is suitable for fixing products with curved structures such as caps, and can make the fixing more reliable.

[0040] The frame 1 has a first material box 11 and a second material box 12 correspondingly arranged on both sides of the product liner assembly. During operation, the operator sits (or stands) directly opposite the product liner assembly, places the curved product to be sewn into the processing station limited by the positioning boss 41 and the side positioning part 42, and the clamping device 5 fixes the product to be sewn. After sewing, the clamping device 5 is released, and the operator removes the sewn product from the processing station. Here, the first material box 11 and the second material box 12 are correspondingly arranged on both sides of the product liner assembly. One is used to store the curved product to be sewn, and the other is used to store the sewn curved product. Placing the first material box 11 and the second material box 12 on both sides makes product handling more convenient and improves processing efficiency.

[0041] After the curved product to be sewn is fixed at the processing station, the sewing machine head 2 starts. Simultaneously, with the cooperation of the first drive device 61 and the second drive device 71, the movable cylinder 4 moves along the sewing line through a combination of rotation and axial movement, so that the sewing position is directly below the sewing machine head 2, thus completing the designed sewing line. This curved product sewing machine uses a product support assembly composed of a fixed cylinder 3 and a movable cylinder 4 to match the curved surface of the product, eliminating the need to flatten the curved product during the sewing process, which greatly improves sewing efficiency and quality.

[0042] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sewing machine for curved products, comprising a frame (1) on which a sewing machine head (2) is fixed, characterized in that: The frame (1) is equipped with a product liner assembly below the sewing machine head (2). The product liner assembly includes a fixed cylinder (3) fixed to the frame (1). The fixed cylinder (3) is fitted with a movable cylinder (4). The movable cylinder (4) is axially movable and circumferentially rotatable around the axis and is assembled with the fixed cylinder (3). The movable cylinder (4) is provided with a clamping device (5) for fixing curved products.

2. The curved surface sewing machine according to claim 1, characterized in that: The specific structure of the movable cylinder (4) that can move axially is as follows: a first driving device (61) is fixed on the frame (1), the first driving device (61) is connected to a transmission shaft (62), a transmission belt (63) is mounted on the transmission shaft (62), a movable frame (64) is fixed on the transmission belt (63), and the movable cylinder (4) is set on the movable frame (64).

3. A sewing machine for curved surface products according to claim 2, characterized in that: The drive shaft (62) is provided with drive belts (63) on both sides of the sewing machine head (2), and the moving frame (64) is provided with a connecting seat (64a), which is connected to the corresponding drive belt (63).

4. A sewing machine for curved surface products according to claim 3, characterized in that: The specific structure of the movable cylinder (4) that can rotate around the axis is as follows: a second drive device (71) is provided on the frame (1), a mounting base (72) is provided on the frame (1), a spline shaft (73) is provided on the mounting base (72), the second drive device (71) is connected to the spline shaft (73) for transmission, a first synchronous pulley (74) is provided on the spline shaft (73), a second synchronous pulley (75) is connected to the movable cylinder (4), and the first synchronous pulley (74) and the second synchronous pulley (75) are connected for transmission through a synchronous belt (76).

5. A sewing machine for curved surface products according to claim 4, characterized in that: The splined shaft (73) is provided with a transmission gear (73a), and the second drive device (71) is connected to the transmission gear (73a) for transmission.

6. A sewing machine for curved surface products according to claim 5, characterized in that: The movable cylinder (4) is provided with a positioning boss (41) on the outside, and the movable cylinder (4) is provided with side positioning parts (42) on both sides respectively.

7. A sewing machine for curved surface products according to claim 6, characterized in that: The clamping device (5) includes a third driving device (51), a driving connector (52), and a chuck assembly. The middle part of the driving connector (52) is hinged to the movable cylinder (4), and one end of the driving connector (52) is hinged to the extension rod (51a) of the third driving device (51). The chuck assembly is fixed to the other end of the driving connector (52). The chuck assembly includes a base plate (53) and a pressure head (54) fixed on the base plate (53).

8. A sewing machine for curved surface products according to claim 7, characterized in that: The substrate (53) includes a first mounting portion (53a) and a second mounting portion (53b) integrally formed and set at an obtuse angle, and pressure heads (54) are respectively fixed on the first mounting portion (53a) and the second mounting portion (53b).

9. A sewing machine for curved surface products according to claim 8, characterized in that: The frame (1) has a first material box (11) and a second material box (12) respectively arranged on both sides of the product liner assembly.

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