Template positioning sensing structure and sewing machine

Abstract

The application discloses a template-to-position sensing structure and a sewing machine. The template-to-position sensing structure comprises a connecting plate installed on a table plate, an inductive module and a pressing assembly are installed on the connecting plate, and the number of the inductive modules is at least two. The pressing assembly comprises a pressing plate and a driving mechanism for driving the pressing plate to ascend and descend, the inductive module and the driving mechanism are connected through a controller, the inductive module is used for feeding a signal to the controller to indicate whether the template is in position, and the controller is used for controlling the driving mechanism to drive the pressing plate to lock or unlock the template according to the signal. The sewing machine comprises a machine head, the table plate and the above-mentioned template-to-position sensing structure. The application has the beneficial effects that the driving mechanism is jointly controlled by the inductive modules on both sides, the machine can be automatically started when the template is installed in position, the working efficiency and the production yield of the sewing machine are effectively improved, and the step of replacing a drawing pattern can be further simplified through the inductive recognition of the template by the table plate.

Description

Technical Field

[0001] This application relates to the field of sewing machine technology, and in particular to a template positioning sensing structure and a sewing machine. Background Technology

[0002] With the development of technology, sewing machine technology is constantly improving. Currently, sewing machines are generally connected to computers, outputting specific patterns drawn on the computer to the sewing machine to improve production efficiency by drawing different patterns. However, at present, changing different patterns on sewing machines requires manual operation of the computer to select, which undoubtedly increases the operator's time cost.

[0003] In recent years, to improve the efficiency of sewing machines, sensing zones or switches are generally installed on the sewing machine table to control the start and stop of the machine. However, since the sewing machine's operating program is output by a computer, when the template angle is tilted, the sewn pattern will also be tilted, thus increasing the product defect rate. Therefore, there is an urgent need for a sensing structure that can limit the template installation angle.

[0004] RFID, or Radio Frequency Identification, is a new automatic identification technology. Compared with traditional technologies, RFID has good penetration and long-distance tag identification capabilities, enabling contactless information transmission and achieving identification purposes through the transmitted information. Utility Model Content

[0005] One objective of this application is to provide a template positioning sensing structure that can solve at least one of the defects in the aforementioned background art.

[0006] To achieve at least one of the above objectives, the technical solution adopted in this application is as follows: a template positioning sensing structure, comprising a connecting plate mounted on a platform, wherein a sensing module and a pressing assembly are mounted on the connecting plate, and the number of sensing modules is at least two; the pressing assembly includes a pressure plate and a drive mechanism for driving the pressure plate to rise and fall, and the sensing module and the drive mechanism are connected through a controller; the sensing module is used to send a signal to the controller indicating whether the template is in position, and the controller is used to control the drive mechanism to drive the pressure plate to lock or unlock the template according to the signal. This configuration avoids the sewing machine from sewing when the template installation point is incorrect; only when each sensing module senses that the template is in position can the pressure plate be controlled to lock the template for sewing, preventing the angle of the sewn pattern from shifting and effectively improving the product yield.

[0007] Preferably, the number of sensing modules is two, and two side plates are mounted on the connecting plate, with the two sensing modules respectively mounted on the two side plates; the driving mechanism is a cylinder, and the sensing modules and the cylinder are connected through a controller. This configuration reduces the number of sensing modules used, lowering the machine's manufacturing cost. When the template is in the correct installation position, the two sensing modules on the connecting plate activate simultaneously, controlling the cylinder to drive the pressure plate down and lock the template.

[0008] Preferably, a toggle assembly is rotatably mounted on the side plate. The toggle assembly includes a paddle and a spring. The paddle controls the sensing module, and the spring defines the initial position of the paddle. With this configuration, when the template pushes the paddle, the rotation of the paddle triggers the sensing module. When the template disengages from the paddle, the paddle returns to its initial position under the action of the spring, awaiting the next trigger.

[0009] Preferably, both ends of the paddle are bent towards the template; one end of the paddle is close to the sensing module, and the other end is close to the platform. This arrangement reduces the difficulty of triggering the sensing module with the paddle.

[0010] Preferably, the sensing module is a sensor, with both side plates located near the midpoint of the connecting plate. The sensor has a sensing element, and the lever has a sensing block that cooperates with the sensing element. This configuration allows for control of the cylinder via a signal connection from the sensor; when the sensing element detects the sensing block, the sensor is triggered.

[0011] Preferably, the sensing module is a micro switch, with the two side plates respectively mounted at both ends of the connecting plate. The micro switch is provided with a contact for controlling the switch position, and the lever is used to push the contact to adjust the position. With this configuration, when the template pushes the lever, the rotation of the lever can compress the contact and activate the micro switch. When the template disengages from the lever, the lever returns to its initial position under the action of a spring, awaiting the next trigger.

[0012] Preferably, the connecting plate is L-shaped and includes a mounting plate and a base plate. The mounting plate is perpendicular to the platform, and the cylinder is mounted on the mounting plate. The base plate is fitted to the platform and is used to cooperate with the pressure plate to lock the template. This configuration increases the contact area between the connecting plate and the platform by using the base plate, thereby improving the stability of the connecting plate installation.

[0013] Preferably, the platform is provided with a limiting post, the base plate is provided with an insertion hole, and the mounting plate is provided with a mounting block; the mounting block is provided with a mounting hole aligned with the insertion hole, and the limiting post passes through the insertion hole and is inserted into the mounting hole; the template is provided with a limiting groove at one end near the connecting plate, which mates with the limiting post. This configuration allows the installation point of the connecting plate to be limited by the limiting post, improving the installation speed of the connecting plate; when the template is advanced, the opening of the limiting groove is aligned with the limiting post, and when the limiting post is embedded in the limiting groove, it is the correct installation point of the template, providing guidance for the advancement of the template.

[0014] Preferably, the pressure plate and / or the base plate are provided with an anti-slip structure; the end of the base plate near the template is provided with a chamfered surface. This configuration can, on the one hand, increase the friction force on the template, preventing the template from falling off the base plate due to vibration of the sewing table during the sewing process; on the other hand, it can reduce the difficulty of the template reaching the base plate, preventing wear and tear on the template during the advancement process.

[0015] Another object of this application is to provide a sewing machine that can solve at least one of the defects in the above-mentioned background art.

[0016] To achieve at least one of the aforementioned objectives, the technical solution adopted in this application is as follows: a sewing machine, including a sewing head, a worktable, and the aforementioned template positioning sensing structure. The sewing head is connected to a controller and is used to sew patterns on a template. A sensing plate is provided on the template, and a sensing area for identifying the sensing plate is provided on the worktable. The sensing area and the sensing plate interact and identify each other via RFID. With this configuration, when the template is in the correct position, the sensing area can identify the information within the sensing plate and control the sewing machine to sew the pattern. When different patterns need to be drawn, different patterns can be changed by replacing the template with different sensing plates.

[0017] Compared with the prior art, the beneficial effects of this application are as follows:

[0018] This invention features multiple sensing modules that work together to control the cylinder, while a single sensing module cannot control the starting cylinder. When the template reaches the correct installation position, multiple sensing modules are activated simultaneously to drive the pressure plate down and sew the pattern, significantly reducing the product defect rate. In addition, the limiting structure provided on the template and connecting plate can improve the installation efficiency of the template and prevent the template from being placed backwards.

[0019] This invention eliminates the need for computer-based pattern selection. The RFID sensing area on the worktable can draw patterns based on the different RFID sensor patches on the template. In addition, a paddle assembly is installed on the connecting plate, which can trigger the sensing module to perform the sewing process by pressing the template. This device can reduce manual operation time and improve the automation process of product production. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this application (the head unit and controller are not required for this application, so they are omitted in the figure).

[0021] Figure 2 for Figure 1 A magnified structural diagram of part A in the middle.

[0022] Figure 3 This is a schematic diagram of the installation structure of the connecting plate and the sensor in this application.

[0023] Figure 4 for Figure 3 A magnified structural diagram of part B in the middle.

[0024] Figure 5 This is a schematic diagram of the mounting structure of the connecting plate and the micro switch in this application.

[0025] Figure 6 for Figure 5 A magnified structural diagram of part C in the middle.

[0026] Figure 7 for Figure 5 A magnified schematic diagram of the local structure of D.

[0027] In the diagram: 1. Platform; 11. Sensing area; 12. Limiting post; 100. Sensor; 101. Sensing part; 2. Connecting plate; 21. Mounting plate; 22. Base plate; 200. Micro switch; 201. Contact; 210. Mounting block; 211. Mounting hole; 220. Anti-slip teeth; 221. Chamfered surface; 222. Insertion hole; 3. Template; 31. Sensing plate; 32. Limiting groove; 300. Side plate; 4. Pressing assembly; 41. Cylinder; 42. Pressure plate; 5. Actuating assembly; 51. Paddle; 52. Spring; 510. Sensing block. Detailed Implementation

[0028] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0029] In the description of this application, it should be noted that the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and 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 should not be construed as limiting the specific protection scope of this application.

[0030] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0031] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0032] One aspect of this application provides a template positioning sensing structure, such as Figure 1 and Figure 2 As shown, one preferred embodiment includes a connecting plate 2 mounted on a platform 1. The connecting plate 2 is equipped with a pressing assembly 4 and a sensing module, with at least two sensing modules. The pressing assembly 4 includes a pressure plate 42 and a drive mechanism for raising and lowering the pressure plate 42. The sensing module is connected to a controller (not shown in the figure). When the template 3 reaches the correct position, the sensing module sends a signal to the controller indicating that the template is in position. The controller then controls the drive mechanism to move the pressure plate 42 to lock or unlock the template 3 based on the received signal.

[0033] Understandably, in this application, multiple sensing modules must be activated before the drive mechanism can control the pressure plate 42 to press down. Therefore, in actual operation, if the operator makes a mistake, even if a single sensing module is activated, the drive mechanism cannot be started, thus preventing the sewn pattern from shifting and effectively improving the product yield.

[0034] Specifically, such as Figure 3 and Figure 4As shown, to reduce the manufacturing cost of the machine, two sensing modules are used. Two side plates 300 are mounted on the connecting plate 2, and the two sensing modules are respectively mounted on the two side plates 300. The driving mechanism is a cylinder 41, and the sensing modules and cylinder 41 are connected through a controller. When the template 3 is in the correct installation position, the two sensing modules located on the side plates 300 start simultaneously and send signals to the controller. Then, the controller controls the cylinder 41 to drive the pressure plate 42 down and lock the template 3 according to the signals.

[0035] It should be noted that the controller synchronously drives the pressure plate 42 to move by controlling the movement of the piston rod inside the cylinder 41, thereby locking or unlocking the template 3. Of course, in other embodiments of this application, the drive mechanism can also be set as other devices capable of moving the pressure plate 42.

[0036] Furthermore, such as Figure 3 and Figure 4 As shown, a toggle assembly 5 is rotatably mounted on the side plate 300. The toggle assembly 5 includes a toggle piece 51 and a spring 52, with the spring 52 defining the initial position of the toggle piece 51. During the advancement of the template 3, the side of the template 3 pushes the toggle piece 51 to rotate and triggers the sensing modules. When the template 3 reaches the correct installation point, both sensing modules are activated, and then the control cylinder 41 drives the pressure plate 42 to lock the template 3 for sewing. When the template 3 disengages from the toggle piece 51, the toggle piece 51 returns to its initial position under the action of the spring 52, awaiting the next trigger.

[0037] It should be noted that the setting of the lever 51 can avoid the operator from personally controlling the sensing module, thereby improving the machine's working efficiency and the operator's safety.

[0038] Understandably, in order to reduce the difficulty of triggering the sensing module with the paddle 51, both ends of the paddle 51 are bent toward the template 3; one end of the paddle 51 is close to the sensing module, and the other end is close to the platform 1; when the paddle 51 is in the initial position, the end of the paddle 51 close to the platform 1 is tilted toward the template 3.

[0039] In this application, there are several ways to set up the sensing module, including but not limited to the following two.

[0040] Setting method 1: As shown in the example Figure 3 and Figure 4 As shown, the sensing module is a sensor 100, and both side plates 300 are close to the midpoint of the connecting plate 2. A sensing part 101 is provided on the sensor 100, and a sensing block 510 that cooperates with the sensing part 101 is provided on the lever 51. The cylinder 41 is controlled through the signal connection of the sensor 100. When the sensing part 101 recognizes the sensing block 510, the sensor can be triggered.

[0041] Setting method two: (e.g.) Figure 5 and Figure 6 As shown, the sensing module is a micro switch 200, with two side plates 300 respectively installed at both ends of the connecting plate 2. The micro switch 200 is provided with a contact 201 for controlling the switch position, and a lever 51 is used to push the contact 201 to adjust the position. When the template 3 pushes the lever 51, the rotation of the lever 51 can squeeze the contact 201 and activate the micro switch 200.

[0042] It is understood that both of the above-mentioned sensing modules can meet the requirements of this application, and those skilled in the art can choose for themselves. However, for the first setting method, the sensor 100 is located near the center of the connecting plate 2, which allows the device to be adapted to smaller templates 3. Therefore, when the user needs to frequently replace smaller templates 3, the first setting method is preferred. Of course, for the second setting method, both the side plate 300 and the micro switch 200 can be installed near the center point of the connecting plate 2 to adapt to smaller templates 3.

[0043] In this embodiment, as Figure 5 and Figure 6 As shown, the connecting plate 2 is L-shaped and includes a mounting plate 21 and a base plate 22. The mounting plate 21 is perpendicular to the platform 1, and the cylinder 41 is mounted on the end face of the mounting plate 21. The base plate 22 is attached to the platform 1, further increasing the contact area between the connecting plate 2 and the platform 1 and improving the stability of the connecting plate 2 installation. In addition, the base plate 22 is also suitable for locking the template 3 with the pressure plate 42.

[0044] It should be understood that the machine will cause the platform 1 to vibrate to a certain extent during operation, and the locking of the pressure plate 42 alone cannot guarantee that the template 3 will not be displaced due to vibration. Based on this, in this application, the base plate 22 and / or the pressure plate 42 are provided with anti-slip structures to prevent the template 3 from displacing in the locked state; the specific anti-slip structures include, but are not limited to, anti-slip teeth 220 and rubber pads.

[0045] Based on the above, in some embodiments of this application, such as Figure 5 and Figure 6 As shown, the base plate 22 is provided with anti-slip teeth 220, which can increase the friction force on the template 3. When the template 3 reaches the correct installation position, the anti-slip teeth 220 can work with the pressure plate 42 to radially limit the template 3 to a certain extent, so as to prevent the template 3 from detaching from the base plate 22 under the vibration of the table plate 1. The design of the anti-slip teeth 220 effectively improves the stability of machine sewing and further improves the yield of products.

[0046] Furthermore, such as Figure 6As shown, a chamfered surface 221 is provided on the end of the base plate 22 near the template 3, which can further reduce the difficulty of the template 3 reaching the base plate 22; during the advancement of the template 3, the side of the template 3 can be easily flipped over to the upper surface of the base plate 22 with the help of the chamfered surface 221, avoiding the template 3 from colliding with the side of the base plate 22 during the advancement process and causing wear.

[0047] In this embodiment, as Figure 2 and Figure 7 As shown, a limiting post 12 is vertically arranged on the end face of the platform 1. The base plate 22 and the mounting plate 21 are respectively provided with an insertion port and a mounting block 210. The mounting block 210 is provided with a mounting hole 211 aligned with the insertion port 222. By inserting the limiting post 12 through the insertion port 222 into the mounting hole 211, the mounting point of the connecting plate 2 can be limited by the limiting post 12. The user can quickly find the correct mounting point of the connecting plate 2 based on the limiting post 12.

[0048] Furthermore, such as Figure 2 and Figure 7 As shown, in order to ensure the accuracy of template 3 installation, a limiting groove 32 is provided on one end of template 3 near the connecting plate 2; during the advancement of template 3, when the limiting post 12 is embedded into the limiting groove 32, it is the correct installation point of template 3, so as to avoid incorrect installation and further improve the working efficiency of the machine.

[0049] Another aspect of this application provides a sewing machine, such as Figure 1 As shown, one preferred embodiment includes a sewing head (not shown), a table 1, and the aforementioned template positioning sensing structure. The sewing head is connected to a controller and is used to sew patterns on the template 3. A sensing plate 31 is provided on the template 3, and a sensing area 11 for identifying the sensing plate 31 is provided on the table 1. When the template 3 moves below the pressure plate 42, the pressure plate 42 presses down to lock the template 3. At this time, the sensing plate 31 is within the sensing area 11, and the sensing area 11 can identify the information within the sensing plate 31, controlling the machine to sew the pattern. Furthermore, to improve the production efficiency of the sewing machine, sensing plates 31 with different pattern information can be provided on different templates 3, and the drawn pattern can be changed by replacing the template 3.

[0050] It is understandable that there are multiple ways to identify the sensing area 11 and the sensing piece 31. In this application, the identification method used between the sensing area 11 and the sensing piece 31 is RFID. RFID is a radio frequency identification technology with good penetration and long-distance tag identification capability, which can identify information without contact.

[0051] It should be added that, considering practical needs, the controller should have a delayed start function, one purpose of which is to protect the safety of the operator; the specific delay time range is 0.1 seconds to 5 seconds, and in this embodiment, the preferred delay time is 0.5 seconds. When all sensing modules are in the activated state, the machine emits a buzzer to indicate that the machine is about to start, and the machine automatically starts sewing 0.5 seconds later.

[0052] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A template positioning sensing structure, comprising a connecting plate (2) mounted on a platform (1), characterized in that, The connecting plate (2) is equipped with a sensing module and a pressing assembly (4). The number of sensing modules is at least two. The pressing assembly (4) includes a pressure plate (42) and a driving mechanism for driving the pressure plate (42) to rise and fall. The sensing module and the driving mechanism are connected through a controller. The sensing module is used to send a signal to the controller to indicate whether the template (3) is in place. The controller is used to control the driving mechanism to drive the pressure plate (42) to lock or unlock the template (3) according to the signal.

2. The template positioning sensing structure as described in claim 1, characterized in that, The number of the sensing modules is two, and two side plates (300) are installed on the connecting plate (2). The two sensing modules are respectively installed on the two side plates (300); the driving mechanism is a cylinder (41), and the sensing modules and the cylinder (41) are connected by a controller.

3. The template positioning sensing structure as described in claim 2, characterized in that, A toggle assembly (5) is rotatably mounted on the side plate (300). The toggle assembly (5) includes a paddle (51) and a spring (52). The paddle (51) is used to control the sensing module, and the spring (52) is used to limit the initial position of the paddle (51).

4. The template positioning sensing structure as described in claim 3, characterized in that, Both ends of the paddle (51) are bent toward the template (3); one end of the paddle (51) is close to the sensing module and the other end is close to the platform (1).

5. The template positioning sensing structure as described in claim 4, characterized in that, The sensing module is a sensor (100). Both side plates (300) are close to the midpoint of the connecting plate (2). The sensor (100) is provided with a sensing part (101), and the lever (51) is provided with a sensing block (510) that cooperates with the sensing part (101).

6. The template positioning sensing structure as described in claim 4, characterized in that, The sensing module is a micro switch (200), and the two side plates (300) are respectively installed at both ends of the connecting plate (2). The micro switch (200) is provided with a contact (201) for controlling the switch position, and the lever (51) is used to push the contact (201) to adjust the position.

7. The template positioning sensing structure as described in claim 2, characterized in that, The connecting plate (2) is L-shaped and includes a mounting plate (21) and a base plate (22). The mounting plate (21) is perpendicular to the platform (1), and the cylinder (41) is mounted on the mounting plate (21). The base plate (22) is attached to the platform (1) and is used to cooperate with the pressure plate (42) to lock the template (3).

8. The template positioning sensing structure as described in claim 7, characterized in that, The platform (1) is provided with a limiting post (12), the base plate (22) is provided with a socket (222), and the mounting plate (21) is provided with a mounting block (210); the mounting block (210) is provided with a mounting hole (211) aligned with the socket (222), and the limiting post (12) passes through the socket (222) and is inserted into the mounting hole (211); the template (3) is provided with a limiting groove (32) that cooperates with the limiting post (12) at one end near the connecting plate (2).

9. The template positioning sensing structure as described in claim 7, characterized in that, The pressure plate (42) and / or the base plate (22) are provided with an anti-slip structure; the base plate (22) is provided with a chamfered surface (221) at one end near the template (3).

10. A sewing machine, comprising a machine head, a table, and a template positioning sensing structure as described in any one of claims 1-9, characterized in that, The machine head is connected to the controller and is used to sew patterns on the template (3); the template (3) is provided with a sensor (31), and the table (1) is provided with a sensing area (11) for identifying the sensor (31); the sensing area (11) and the sensor (31) are interactively identified by RFID.

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