Quick positioning and butting mechanism for pressing frame and waistband pressing plate and sewing equipment

Abstract

The utility model relates to a quick positioning and butting mechanism for a pressing frame and a waistband pressing plate and sewing equipment, which comprise an upper positioning structure arranged on the pressing frame and a lower positioning structure arranged on the waistband pressing plate, one of the upper positioning structure and the lower positioning structure comprises a plurality of positioning blocks, the other one of the upper positioning structure and the lower positioning structure comprises a plurality of positioning grooves corresponding to the positioning blocks, the positioning blocks and the positioning grooves extend along a straight line, and the straight line extending directions of at least two positioning blocks are not parallel to each other on the horizontal plane; when the positioning block is arranged on the waistband pressing plate, the cross section of the positioning block and the cross section of the positioning groove are gradually increased from top to bottom, and when the positioning block is arranged on the pressing frame, the cross section of the positioning block and the cross section of the positioning groove are gradually decreased from top to bottom. When the pressing frame is pressed down on the waistband pressing plate, the positioning blocks are inserted into the corresponding positioning grooves, and the two side faces, in the width direction, of the positioning blocks abut against the two side faces, in the width direction, of the positioning grooves.

Description

Technical Field

[0001] This invention relates to the field of sewing technology, specifically to a quick positioning and docking mechanism for a presser frame and a waistband presser plate, as well as sewing equipment. Background Technology

[0002] In the field of denim sewing, during the waistband sewing process, the folded waistband needs to be placed into the sewing machine. A waistband presser plate is often used to hold the waistband in place to stabilize its shape. After the waistband is positioned in the sewing machine, the presser frame moves down and presses down on the waistband presser plate to ensure stability during sewing. When the presser frame presses down on the waistband presser plate, the presser plate needs to remain horizontally stable and not shift relative to the presser frame. The shaped grooves on the waistband presser plate, used for sewing, are located within the working space of the presser frame for needle movement. Positioning the waistband presser plate within the sewing machine is achieved through the positioning between the presser frame and the presser frame, preventing misalignment. On the other hand, the presser frame should not apply excessive pressure to the waistband presser plate to avoid over-pressing it. Therefore, the conventional method of directly pressing the waistband presser plate down is insufficient to meet the requirements, as friction between the presser frame and the waistband presser plate is insufficient to stably define their relative positions. Summary of the Invention

[0003] In view of the shortcomings of the prior art described above, the technical problem to be solved by the present invention is to provide a quick positioning and docking mechanism for the presser frame and the waistband presser plate, as well as a sewing device, which can complete the docking and positioning when the presser frame presses down on the waistband presser plate, stabilize the position of the two in the horizontal direction, and has a simple structure.

[0004] To achieve the above objectives, the present invention provides a quick positioning and docking mechanism for a pressure frame and a waist-end pressure plate, comprising an upper positioning structure disposed on the pressure frame and a lower positioning structure disposed on the waist-end pressure plate. One of the upper and lower positioning structures includes multiple positioning blocks, and the other includes multiple positioning grooves corresponding to the positioning blocks. Both the positioning blocks and the positioning grooves extend along a straight line, and the cross-section perpendicular to the straight extension direction is the cross-section. At least two positioning blocks have straight extension directions that are not parallel to each other on the horizontal plane. The straight extension direction of the positioning blocks is their length direction. When the positioning blocks are disposed on the waist-end pressure plate, the cross-sections of both the positioning blocks and the positioning grooves gradually increase from top to bottom. When the positioning blocks are disposed on the pressure frame, the cross-sections of both the positioning blocks and the positioning grooves gradually decrease from top to bottom. When the waist-end pressure plate is located below the pressure frame and both are in a dockable position, the corresponding positioning blocks and positioning grooves are aligned vertically. When the pressure frame presses down on the waist-end pressure plate, the positioning blocks are inserted into the corresponding positioning grooves, and the two sides of the positioning blocks along the width direction abut against the two sides of the positioning grooves along the width direction.

[0005] Furthermore, there are at least two positioning blocks with perpendicular extension directions.

[0006] Furthermore, the upper positioning structure includes multiple positioning blocks, and the lower positioning structure includes multiple positioning grooves.

[0007] Furthermore, the cross-sections of both the positioning block and the positioning groove are trapezoidal.

[0008] Furthermore, it also includes a lower connecting structure disposed on the waist head pressure plate and an upper connecting structure disposed on the pressure frame and cooperating with the lower connecting structure. When all the positioning blocks are inserted into the corresponding positioning grooves, the upper connecting structure and the lower connecting structure are in a connectable position, and the upper connecting structure and the lower connecting structure can establish a connection or disconnect the connection.

[0009] Furthermore, one of the upper connecting structure and the lower connecting structure includes an electromagnet, and the other includes a magnetic chuck.

[0010] Furthermore, one of the upper and lower connecting structures includes a locking block, and the other includes a plug rod and a locking drive unit for driving the plug rod to move. The locking block has a plug hole, and the upper and lower connecting structures are connected when the plug rod is inserted into the plug hole of the locking block.

[0011] The present invention also provides a sewing device, including a presser frame and a waistband presser plate, and further including the aforementioned quick positioning and docking mechanism.

[0012] Furthermore, the waist-head pressure plate includes a pressing plate portion and a connecting plate portion that is detachably and fixedly connected to the pressing plate portion, and the lower positioning structure of the quick positioning docking mechanism is disposed on the connecting plate portion.

[0013] As described above, the quick positioning and docking mechanism and sewing equipment involved in this utility model have the following beneficial effects:

[0014] The quick positioning and docking mechanism can complete the docking and positioning when the pressure plate is pressed down on the waistband, ensuring that the two can be well aligned and stabilized in the horizontal direction. This ensures that the position of the waistband pressure plate is stable and reliable during the sewing process. The entire quick positioning and docking mechanism has a simple structure and is easy to use, which can improve the sewing quality and work efficiency of the waistband. The quick positioning and docking mechanism also has upper and lower connecting structures, which can fix or disconnect the pressure plate and the waistband pressure plate, making it more flexible and convenient to use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the waist-head pressure plate and positioning block in this invention.

[0016] Figure 2 This is a schematic diagram of the pressure frame and positioning block in this invention.

[0017] Figure 3 This is a schematic diagram of the pressing frame pressing down on the head plate in this invention.

[0018] Explanation of icon numbers

[0019] 1. Press the frame

[0020] 2. Waist-end pressure plate

[0021] 21 Shaped Groove

[0022] 3 positioning blocks

[0023] 4 magnetic clasps

[0024] 5. Sewing machine Detailed Implementation

[0025] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0026] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings of this specification are merely for illustrative purposes to aid those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives achieved by the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and are not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0027] See Figures 1 to 3This utility model provides a quick positioning and docking mechanism for a pressure frame 1 and a waist head pressure plate 2, including an upper positioning structure disposed on the pressure frame 1 and a lower positioning structure disposed on the waist head pressure plate 2. One of the upper and lower positioning structures includes multiple positioning blocks 3, and the other includes multiple positioning grooves (not shown in the figures) corresponding to the positioning blocks 3. Both the positioning blocks 3 and the positioning grooves extend along a straight line, and the cross-section perpendicular to the straight extension direction is the cross-section. At least two positioning blocks 3 have straight extension directions that are not parallel on the horizontal plane. The straight extension direction of the positioning blocks 3 is their length direction. The positioning blocks 3 are disposed on the waist head pressure plate 2. When the head pressure plate 2 is on the pressure plate, the cross-sections of the positioning block 3 and the positioning groove gradually increase from top to bottom. When the positioning block 3 is set on the pressure frame 1, the cross-sections of the positioning block 3 and the positioning groove gradually decrease from top to bottom. When the waist pressure plate 2 is located below the pressure frame 1 and the two are in a dockable position, the corresponding pressure frame 1 positioning block 3 and positioning groove are aligned vertically. When the pressure frame 1 is pressed down on the waist pressure plate 2, the positioning blocks 3 are inserted into the corresponding positioning grooves, and the two sides of the positioning block 3 along the width direction abut against the two sides of the positioning groove along the width direction. At this time, the shape groove 21 on the waist pressure plate 2 is located within the working space of the pressure frame 1.

[0028] The basic working principle of the quick positioning and docking mechanism involved in this utility model is as follows: Before sewing the waistband, the waistband pressure plate 2 presses down on the waistband and is located in the sewing equipment, which includes a sewing machine 5, a pressure frame 1, etc. The sewing machine 5 can be a pattern sewing machine or a flat sewing machine, etc. The pressure frame 1 is driven by a corresponding drive mechanism to achieve up and down movement. When the waistband pressure plate 2 presses down on the waistband and is waiting to be sewn, the waistband pressure plate 2 is located below the pressure frame 1, and the corresponding positioning block 3 and positioning groove are kept vertically aligned. Then, when the pressure frame 1 moves down to press down on the waistband pressure plate 2, the positioning blocks 3 are inserted into the corresponding positioning grooves, and the two are kept abutting on their sides in the width direction. At the same time, even if there is a small positional deviation between the positioning block 3 and the positioning groove when the pressure frame 1 moves down, the positioning block 3 can be positioned by the cooperation of the two sides during the insertion of the positioning groove, which can correct the position of the waistband pressure plate 2 and ensure that the corresponding positioning block 3 and positioning groove are finally accurately positioned and matched. Because at least two positioning blocks 3 have straight extension directions that are not parallel to each other on the horizontal plane, the relative positions of the pressure frame 1 and the waistband pressure plate 2 in the horizontal direction can be restricted, preventing relative movement and relative rotation around the vertical axis. This ensures that the relative positions of the pressure frame 1 and the waistband pressure plate 2 are stable and reliable, and that the working space and the shape groove 21 are stably aligned. Both the working space and the shape groove 21 are used for sewing the waistband, and their shapes are set according to the requirements of the waistband and the seam thread.

[0029] See Figures 1 to 2 The present invention will be further described below with reference to a specific embodiment:

[0030] In this embodiment, see Figure 1 and Figure 2 As a preferred design, the lower positioning structure includes two positioning blocks 3, fixed to the upper surface of the waist-head pressure plate 2. The straight extension directions of the two positioning blocks 3 are perpendicular to each other. One positioning block 3 extends in a straight line along the X direction (left-right direction), and the other extends in a straight line along the Y direction (front-back direction). Of course, the straight extension directions of the two positioning blocks 3 can also be at other angles. Correspondingly, the upper positioning structure includes two positioning grooves, extending in the X and Y directions respectively, and corresponding one-to-one with the two positioning blocks 3. The cross-section of the positioning groove is also an isosceles trapezoid, which facilitates the insertion of the positioning block 3 into the positioning groove and ensures that the sides of the two remain in contact. The positioning block 3 extending in the X direction and the positioning groove cooperate to restrict the relative position of the pressure frame 1 and the waist-head pressure plate 2 in the Y direction, and the positioning block 3 extending in the Y direction and the positioning groove cooperate to restrict the relative position of the pressure frame 1 and the waist-head pressure plate 2 in the X direction, and together they prevent the pressure frame 1 and the waist-head pressure plate 2 from rotating relative to each other around the Z-axis. In other embodiments, the upper positioning structure may include a positioning block 3 fixed to the pressure frame 1, and the lower positioning structure may include a positioning groove disposed on the upper surface of the waist pressure plate 2. The cross-sections of the positioning block 3 and the positioning groove may also be semi-circular or other suitable shapes, and the number of positioning blocks 3 and positioning grooves may also be set to other quantities according to actual needs.

[0031] In this embodiment, see Figure 1 and Figure 2 As a preferred design, it also includes a lower connecting structure set on the waist head pressure plate 2 and an upper connecting structure set on the pressure frame 1 and cooperating with the lower connecting structure. When the positioning blocks 3 are all inserted into the corresponding positioning grooves, the upper connecting structure and the lower connecting structure are in a connectable position, and the upper connecting structure and the lower connecting structure can establish or disconnect the connection. After the pressure frame 1 and the waist head pressure plate 2 are fixedly connected by the upper connecting structure and the lower connecting structure, it can also be lifted and moved, making it more convenient and flexible to use.

[0032] In this embodiment, see Figure 1 and Figure 2As a preferred design, in this embodiment, one of the upper and lower connecting structures includes an electromagnet (not shown in the drawings), and the other includes a magnetic chuck 4. Specifically, the upper connecting structure includes multiple electromagnets (not shown in the drawings), and the lower connecting structure includes multiple magnetic chucks 4, fixed to the upper surface of the waist pressure plate 2. The pressure frame 1 is located directly above the waist pressure plate 2. When the positioning block 3 is aligned with the corresponding positioning groove, the electromagnets and magnetic chucks 4 remain aligned one-to-one. When the pressure frame 1 presses down on the waist pressure plate 2, the electromagnets abut against the magnetic chucks. The on / off state of the electromagnets can be controlled by the electrical control system of the sewing equipment. When the electromagnets are energized, they attract the magnetic chucks 4, achieving a fixed connection. When the electromagnets are de-energized, they no longer attract and fix the magnetic chucks 4, releasing the connection. In other embodiments, the electromagnets and magnetic chucks 4 can also be interchanged.

[0033] In another embodiment, one of the upper and lower connecting structures includes a locking block, and the other includes a rod and a locking drive unit that drives the rod. The locking drive unit can be a power component with a driving function, such as a cylinder. The cylinder drives the rod to move linearly and corresponds to a locking block. The cylinder can be controlled by the electronic control system of the sewing equipment. When the pressure frame 1 presses down on the waist plate 2, the rod on the cylinder is aligned with the corresponding locking block's insertion hole, and is in a connectable state. Then, the cylinder drives the rod to extend and insert into the locking block's insertion hole to establish a connection. When the cylinder drives the rod to retract and pull out of the locking block's insertion hole, the connection is released. The upper and lower connecting structures can also adopt other suitable structures that can achieve quick connection or disconnection functions.

[0034] This utility model also provides a sewing device, including a sewing machine 5, a presser frame 1, and a waistband presser plate 2. The sewing machine 5 can be a pattern sewing machine, a flat sewing machine, etc., for specific sewing work. It also includes the aforementioned quick positioning and docking mechanism for positioning and connecting the presser frame 1 and the waistband presser plate 2 during sewing. The waistband presser plate 2 includes a pressing plate part and a connecting plate part that is detachably fixed to the pressing plate part. The lower positioning structure and the lower connecting structure of the quick positioning and docking mechanism are both located on the connecting plate part, and the shaped groove is located on the pressing plate part. This allows for the replacement of different connecting plate parts according to the needs of the waistband. The connecting plate part can also be an integral plate with the pressing plate part.

[0035] The quick positioning and docking mechanism and sewing equipment of this utility model have the following beneficial effects:

[0036] The quick positioning and docking mechanism can complete the docking and positioning when the pressure frame 1 presses down on the waist plate 2, ensuring that the two can be well aligned and stabilized in the horizontal direction. This ensures that the position of the waist plate 2 is stable and reliable during the sewing process. The entire quick positioning and docking mechanism has a simple structure and is easy to use, which can improve the sewing quality and work efficiency of the waist plate. The quick positioning and docking mechanism also has upper and lower connecting structures, which can fix the pressure frame 1 and the waist plate 2 in place or disconnect them, making it more flexible and convenient to use.

[0037] In summary, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0038] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A quick positioning and docking mechanism for a pressure frame and a waist-end pressure plate, characterized in that: The device includes an upper positioning structure disposed on the pressure frame (1) and a lower positioning structure disposed on the waist head pressure plate (2). One of the upper positioning structure and the lower positioning structure includes multiple positioning blocks (3), and the other includes multiple positioning grooves corresponding to the positioning blocks (3). The positioning blocks (3) and the positioning grooves extend along a straight line, and the cross section perpendicular to the straight line extension direction is the cross section. At least two positioning blocks (3) have straight line extension directions that are not parallel to each other on the horizontal plane. The straight line extension direction of the positioning blocks (3) is its length direction. The positioning blocks (3) are disposed on the waist head pressure plate (2). When the positioning block (3) and the positioning groove are both gradually increasing in cross-section from top to bottom, the positioning block (3) and the positioning groove are gradually decreasing in cross-section from top to bottom when the positioning block (3) is set on the pressure frame (1); when the waist pressure plate (2) is located below the pressure frame (1) and the two are in a dockable position, the corresponding positioning block (3) and the positioning groove are aligned vertically. When the pressure frame (1) presses down on the waist pressure plate (2), the positioning block (3) is inserted into the corresponding positioning groove, and the two sides of the positioning block (3) along the width direction abut against the two sides of the positioning groove along the width direction.

2. The rapid positioning and docking mechanism according to claim 1, characterized in that: There are at least two positioning blocks with perpendicular extension directions (3).

3. The rapid positioning and docking mechanism according to claim 1, characterized in that: The upper positioning structure includes multiple positioning blocks (3), and the lower positioning structure includes multiple positioning grooves.

4. The rapid positioning and docking mechanism according to claim 1, characterized in that: The cross-sections of the positioning block (3) and the positioning groove are both trapezoidal.

5. The rapid positioning and docking mechanism according to claim 1, characterized in that: It also includes a lower connecting structure set on the waist pressure plate (2) and an upper connecting structure set on the pressure frame (1) and cooperating with the lower connecting structure. When the positioning blocks (3) are all inserted into the corresponding positioning grooves, the upper connecting structure and the lower connecting structure are in a connectable position, and the upper connecting structure and the lower connecting structure can establish a connection or disconnect the connection.

6. The rapid positioning and docking mechanism according to claim 5, characterized in that: The upper and lower connecting structures include an electromagnet and a magnetic chuck (4), respectively.

7. The rapid positioning and docking mechanism according to claim 5, characterized in that: The upper and lower connecting structures include a locking block and a locking drive unit that drives the rod to move. The locking block has a hole, and the upper and lower connecting structures are connected when the rod is inserted into the hole of the locking block.

8. A sewing device comprising a presser frame (1) and a waistband presser plate (2), characterized in that: It also includes the rapid positioning and docking mechanism as described in any one of claims 1 to 7.

9. The sewing equipment according to claim 8, characterized in that: The waist-head pressure plate (2) includes a pressing plate part and a connecting plate part that is detachably fixed to the pressing plate part. The lower positioning structure of the quick positioning docking mechanism is set in the connecting plate part.

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