A sewing machine bottom plate gluing device

Abstract

The utility model discloses a sewing machine bottom plate gluing device, including production line mechanism, detection mechanism and gluing mechanism, production line mechanism includes detection station and gluing station, and detection mechanism sets up in detection station, and gluing mechanism sets up in gluing station, and detection mechanism includes the stopper retraction device, detection seat and install in the photoelectric trigger device of detection seat, visual detection device, and gluing mechanism includes three -dimensional transmission mechanism and installs in the gluing structure of three -dimensional transmission mechanism, the utility model carries out online detection to gluing quality in the bottom plate gluing process, when the gluing exists the defect, in time will bottom plate return to gluing station and carry out the gum filling, until the gluing quality satisfies the requirement, compared with the present manual detection gluing quality and the process of additional configuration gum filling equipment, the application realizes automatic online detection, and the detection efficiency is high and accurate, and the gluing structure has the gluing and the gum filling function simultaneously, realizes the gluing and the gum filling to bottom plate in the same station, and the overall equipment is compact.

Description

Technical Field

[0001] This utility model belongs to the field of sewing machine technology and relates to a sewing machine base plate adhesive coating device. Background Technology

[0002] Traditional manual assembly methods for sewing machine housing and base plate assembly suffer from low efficiency and inconsistent quality, leading to the emergence of automated assembly lines for sewing machine housing and base plates. However, due to factors such as changes in ambient temperature and partial blockages in the glue spraying lines or nozzles, the glue application process on automated assembly lines sometimes results in insufficient glue application or glue breakage in certain areas. If these defects are not detected in time by the production line quality inspectors, the problematic glued base plates 4 will flow into subsequent assembly processes and be directly assembled, affecting the oil leakage prevention performance of the finished sewing machine and directly impacting product quality and performance. Furthermore, the current practice of collecting and centrally processing defective glued base plates 4 requires additional glue replenishment equipment and stations. However, with technological advancements, the number of defective glued base plates 4 is not large, and configuring a complete set of glue replenishment equipment would increase costs and floor space. Summary of the Invention

[0003] In order to overcome at least one deficiency of the prior art, this utility model provides a sewing machine base plate adhesive application device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a sewing machine base plate gluing device, comprising a production line mechanism, a detection mechanism, and a gluing mechanism. The production line mechanism includes a detection station and a gluing station. The detection mechanism is located at the detection station, and the gluing mechanism is located at the gluing station. The detection mechanism includes a stop telescopic device, a detection seat, and a photoelectric triggering device and a visual detection device installed on the detection seat. The gluing mechanism includes a three-way transmission mechanism and a gluing structure installed on the three-way transmission mechanism.

[0005] Furthermore, the production line mechanism includes a production line plate and a fixed frame. The production line plate is mounted on the fixed frame. The production line plate includes two sets of parallel crossbars and rollers. Several rollers are located between the crossbars and are arranged in an array along the y-axis. The rollers are movably connected to the crossbars and are powered by the production line motion motor.

[0006] Furthermore, the detection seat includes an upper seat and a lower seat, with the photoelectric triggering device and the visual detection device mounted on the upper seat.

[0007] Furthermore, the photoelectric triggering device includes a photoelectric sensor that senses the presence or absence of a base plate at the detection station and sends an electrical signal to the vision detection device, which then outputs a corresponding signal based on the electrical signal.

[0008] Furthermore, the visual inspection device includes a camera, a dome light source, a fixed-focus lens, and a visual controller. The visual controller is connected to a photoelectric sensor circuit, the camera is connected to the visual controller circuit, and the visual controller has a built-in defect detection system.

[0009] Furthermore, the detection mechanism also includes a display, which is mounted on the upper seat.

[0010] Furthermore, the upper seat and the lower seat are connected by a linkage structure. The linkage structure is adjustable.

[0011] Furthermore, the linkage structure includes an upper linkage and a lower linkage. The upper linkage is fixedly connected to the upper seat, the lower linkage is fixedly connected to the lower seat, and the lower linkage is fixedly connected to the production line plate. The upper linkage and the lower linkage are adjustable.

[0012] Furthermore, the block telescopic device is fixed on the production line plate. The block telescopic device includes a telescopic cylinder, a block, a pneumatic solenoid valve, and a fixing plate. The telescopic cylinder is fixed on the production line plate through the fixing plate. The block is fixed to the power output rod of the telescopic cylinder. The pneumatic solenoid valve and the telescopic cylinder are connected through an air pipe. The power line of the pneumatic solenoid valve is connected to one output terminal of the vision controller. The block is located between two rollers.

[0013] Furthermore, the camera is fixedly connected to the upper frame profile; the fixed-focus lens is fixed on the camera; the dome light source is fixedly connected to the profile; and the vision controller and the light source controller are fixed on the lower frame.

[0014] In summary, the advantages of this utility model are as follows:

[0015] This invention performs online detection of adhesive coating quality during the base plate coating process. When defects are found in the adhesive coating, the base plate is promptly returned to the coating station for touch-up adhesive application until the coating quality meets the requirements. Compared with the existing manual inspection of adhesive coating quality and the additional process of configuring touch-up adhesive equipment, this application achieves automatic online detection with high efficiency and accuracy. At the same time, the coating structure combines adhesive coating and touch-up adhesive functions, realizing adhesive coating and touch-up adhesive application on the base plate in the same station, and the overall equipment is compact. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the online glue coating detection device of this utility model.

[0017] Figure 2 This is a schematic diagram of the testing mechanism of this utility model.

[0018] Figure 3 This is a schematic diagram of the block telescopic device of this utility model.

[0019] Figure 4 This is a schematic diagram of the base plate of this utility model. Detailed Implementation

[0020] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0021] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0022] In this embodiment of the invention, all directional indicators (such as up, down, left, right, front, back, horizontal, vertical, etc.) are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indicator will also change accordingly.

[0023] Due to installation errors and other reasons, the parallel relationship referred to in the embodiments of this utility model may actually be an approximate parallel relationship, and the perpendicular relationship may actually be an approximate perpendicular relationship.

[0024] Example:

[0025] like Figures 1-4 As shown, a sewing machine base plate gluing device includes a production line mechanism 1, a detection mechanism 2, and a gluing mechanism 3. The detection mechanism 2 and the gluing mechanism 3 are distributed along the direction of the production line mechanism 1 for conveying the base plate 4. The production line mechanism 1 conveys the base plate 4 to the detection mechanism 2, which detects the gluing quality on the base plate 4 and then conveys it to the gluing mechanism 3, which applies or replenishes the glue to the base plate 4.

[0026] To clearly describe the orientation, an XOY coordinate system is established, where the y-axis represents the direction of the transmission base plate 4 of production line mechanism 1, and also the length direction of production line mechanism 1. Figure 1 The left and right directions of the visual angle, the x-axis is the direction perpendicular to the direction of the transmission base plate 4 of production line mechanism 1, and also the width direction of production line mechanism 1. Figure 1 The visual angle is in the forward and backward direction, with the z-axis representing the height direction.

[0027] The production line mechanism 1 includes a production line controller, a production line board 11, and a fixing frame 12. The production line board 11 is mounted on the fixing frame 12 for support and fixation. Preferably, the glue application mechanism 3 is mounted above the fixing frame 12.

[0028] The production line board 11 includes two stations: an inspection station and a gluing station. The inspection mechanism 2 is located at the inspection station, and the gluing mechanism 3 is located at the gluing station. The production line board 11 transfers the base plate 4 to the inspection station for the inspection mechanism 2 to perform gluing quality inspection, and the production line board 11 transfers the base plate 4 to the gluing station for the gluing mechanism 3 to perform gluing or touch-up gluing.

[0029] The production line plate 11 includes two sets of parallel crossbars 111 and rollers 112. Several rollers 112 are located between the crossbars 111 and arranged in an array along the y-axis. The rollers 112 are movably connected to the crossbars 111 and are powered by a production line motion motor. The production line controller is connected to the production line motion motor and controls its operation. The production line motion motor drives the rollers 112 to rotate. The production line motion motor can be located inside the crossbars 111 and can be connected one-to-one or one-to-many to each roller 112, depending on the required configuration. When glue application inspection is required, the glued base plate 4 is transferred to the rollers 112 of the production line mechanism 1. The production line motion motor starts, causing the rollers 112 to rotate, which in turn drives the base plate 4 to rotate.

[0030] The production line controller uses a conventional Siemens PLC S7-1200. This application does not improve the structure, but only applies it, and will not elaborate on this aspect.

[0031] The detection mechanism 2 includes a stop telescopic device 23, a detection seat, and a photoelectric triggering device and a vision detection device 22 installed on the detection seat. The photoelectric triggering device is connected to the vision detection device 22, and the vision detection device 22 is connected to the stop telescopic device 23.

[0032] The detection base includes an upper base 201 and a lower base 202, with a photoelectric triggering device and a visual inspection device 22 installed on the upper base 201.

[0033] The photoelectric triggering device includes a photoelectric sensor 21, which is fixed on the lower side of the upper seat 201. The photoelectric sensor 21 realizes the detection of the presence of a base plate at the detection station and sends an electrical signal to the vision detection device 22 through optical path reflection ranging. The vision detection device 22 outputs a corresponding signal according to the electrical signal. When there is a base plate, the photoelectric sensor 21 sends a high-level signal indicating the presence of a base plate. When there is no base plate, the photoelectric sensor 21 sends a low-level signal indicating the absence of a base plate. The vision detection device 22 receives the high-level signal and outputs an image acquisition signal. The vision detection device 22 remains silent for other signals.

[0034] The visual inspection device 22 includes a camera 221, a dome light source 222, a fixed-focus lens, and a visual controller. The visual controller is circuitically connected to the photoelectric sensor 21, and the camera 221 is circuitically connected to the visual controller. The visual controller has a built-in defect detection system that detects the adhesive quality of the base plate. Since the defect detection system technology is mature and widely used in the market, the specific structure and model of the defect detection system will not be described in detail here. The defect detection system includes, but is not limited to, the defect detection system disclosed in the patent document (CN118071744B) that can acquire, analyze, detect, and process data through a camera. The visual controller adopts the conventional Hikvision VC5000.

[0035] like Figure 2 As shown, camera 221 is fixedly connected to the profile of upper base 201; fixed-focus lens is fixed to camera 221 by screwing; dome light source 222 is fixedly connected to the profile; vision controller and light source controller are fixed to lower base 202. Considering that the base plate 4 is made of cast iron, its surface has shallow texture, is prone to reflection, and has oil residue after cleaning and drying, dome light source 222 is preferred as the illumination source. The light emitted by its LED beads forms diffused illumination through the arched bowl-shaped reflection, which can achieve uniform illumination of the metal surface, so that the glue morphology on the upper surface of the base plate 4 can be fully presented, which is beneficial to image processing.

[0036] Preferably, the front and rear positions of the camera 221 and the dome light source 222, as well as the position of the detection mechanism 2, can be adjusted to ensure that the center of the adhesive coating area of ​​the base plate 4 is basically aligned with the image center.

[0037] The testing unit 2 also includes a display 25, which is mounted on the upper seat 201. The display 25 is used to display the glue coating image of the base plate 4, the test results of the glue coating quality of the base plate 4, etc.

[0038] Preferably, the upper seat 201 and the lower seat 202 are connected by a connecting rod structure 24. The connecting rod structure is adjustable.

[0039] The linkage structure 24 includes an upper linkage 241 and a lower linkage 242. The upper linkage 241 is fixedly connected to the upper seat 201, and the lower linkage 242 is fixedly connected to the lower seat 202. The lower linkage 242 is also fixedly connected to the production line plate 11. The upper linkage 241 and the lower linkage 242 are adjustable. By adjusting the connection position between the upper linkage 241 and the lower linkage 242, the distance between the base plate 4 on the production line plate 11 and the vision inspection device 22 on the upper seat 201 can be controlled, thereby changing the object distance of the fixed-focus lens and adjusting the size of the image acquisition field of view.

[0040] The linkage structure is adjustable, specifically:

[0041] The upper connecting rod 241 is provided with several upper connecting holes, and the lower connecting rod 242 is provided with several lower connecting holes. The upper and lower connecting holes are arranged in an array along the height direction and are set accordingly. The upper and lower connecting holes at different positions are aligned and fixedly connected by screws, bolts and other fasteners, thereby realizing the height adjustment between the upper connecting rod 241 and the lower connecting rod 242, thereby controlling the distance between the base plate 4 on the production line plate 11 and the vision inspection device 22 on the upper seat 201, thereby changing the object distance of the fixed-focus lens and realizing the adjustment of the field of view of image acquisition.

[0042] To prevent deformation caused by its own weight after the upper seat 201 and the upper connecting rod 241 and the lower seat 202 and the lower connecting rod 242 are connected by triangular ribs.

[0043] The block telescopic device 23 is fixed to the production line plate 11. The block telescopic device 23 includes a telescopic cylinder 231, a block 232, a pneumatic solenoid valve, and a fixing plate 233. The telescopic cylinder 231 is fixed to the crossbar 111 of the production line plate 11 through the fixing plate 233. The block 232 is fixed to the power output rod of the telescopic cylinder 231. The pneumatic solenoid valve and the telescopic cylinder 231 are connected through an air pipe. The power line of the pneumatic solenoid valve is connected to one output terminal of the vision controller. The block 232 is located between two rollers 112 in a suitable position. When it is necessary to block the bottom plate 4, the vision controller triggers the telescopic cylinder 231 through the pneumatic solenoid valve. The telescopic cylinder 231 starts to push the block 232 up to the transmission path of the bottom plate 4 to block the bottom plate 4.

[0044] Preferably, the base plate 4 is provided with a push groove 41, which is opposite to the stop block 232. The stop block 232 enters the push groove 41 to block the base plate 4.

[0045] The online glue application inspection device also includes an alert module, which is communicatively connected to the vision controller. The alert module generates different alert signals based on different inspection results from the vision controller. The alert module can use devices such as buzzers, sirens, or alarm lights. The alert signal can be color, sound, or both. In this embodiment, the alert module is a buzzer. When the inspection result is qualified, the alert signal is a green light; when the inspection result is unqualified, the alert signal is a red light.

[0046] The operation process of the online glue coating detection device in this embodiment is as follows:

[0047] After the production line mechanism 1 conveys the base plate 4 to the gluing station for gluing, it continues to move to the inspection station. The photoelectric sensor 21 detects the base plate 4 and outputs a high-level signal to the vision controller. The vision controller triggers the stop telescopic device 23 to block the base plate 4 and triggers the camera 221 to capture an image. The camera 221 transmits the image back to the vision controller. The defect detection system processes the image to obtain the inspection result and generates a qualified signal and a non-qualified signal based on the inspection result. The vision controller triggers the warning module to emit a green light based on the qualified signal and triggers the stop telescopic device 23 to retract. Under the action of the production line mechanism 1, the base plate 4 continues to be conveyed to the next process. The vision controller triggers the warning module to emit a red light based on the non-qualified signal and triggers the production line controller to control the production line motion motor to reverse and convey the base plate 4 in the opposite direction to the gluing station. The gluing mechanism 3 applies additional glue to the base plate 4.

[0048] The online glue application detection device also includes a power supply module, which powers the photoelectric trigger device 22, the vision detection device 23, and the display 25. The power supply module adopts a conventional structure, including a three-hole power socket, a leakage protection switch, a power strip, a 24V switching power supply, and several wires. The power supply module can be installed on the detection base. This application does not improve its structure, but only its application, so it will not be described in detail here.

[0049] The glue application mechanism 3 includes a three-way transmission mechanism, a glue application structure, a clamping mechanism, and a glue application frame 30. The glue application frame 30 is mounted on the fixed frame 12. The three-way transmission mechanism is mounted on the glue application frame 30. The glue application structure is mounted on the three-way transmission mechanism. The three-way transmission mechanism allows the glue application structure to move in different directions. The clamping mechanism clamps the base plate 4 to facilitate the glue application structure to apply glue and replenish glue.

[0050] The production line controller is connected to the three-way transfer mechanism, and the production line controller controls the operation of the three-way transfer mechanism. The three-way transmission mechanism includes a Y-axis transmission mechanism 31, an X-axis transmission mechanism 32, and a Z-axis transmission mechanism 33. The fixed end of the Y-axis transmission mechanism 31 is installed on the glue coating frame 30, the fixed end of the X-axis transmission mechanism 32 is installed on the drive end of the Y-axis transmission mechanism 31, and the fixed end of the Z-axis transmission mechanism 33 is installed on the drive end of the X-axis transmission mechanism 32. The glue coating structure is installed on the drive end of the Z-axis transmission mechanism 33. In actual operation, the production line controller is triggered by the vision controller to control the three-way transmission mechanism to move the glue coating structure to the target position for glue coating and re-glueing operations. Specifically, the Y-axis transmission mechanism 31 starts and drives the X-axis transmission mechanism 32 to move along the Y-axis direction, thereby moving the glue coating structure along the Y-axis direction. The X-axis transmission mechanism 32 starts and drives the Z-axis transmission mechanism 33 to move along the X-axis direction, thereby moving the glue coating structure along the X-axis direction. The Z-axis transmission mechanism 33 starts and drives the glue coating structure to move along the Z-axis direction, thereby moving the glue coating structure along the Z-axis direction. This enables the glue coating structure to move to the glue coating area for glue coating and the re-glueing area for re-glueing.

[0051] The Y-axis transmission mechanism 31, X-axis transmission mechanism 32, and Z-axis transmission mechanism 33 are power transmission structures. They can be conventional power components combining a motor and a ball screw, a power component combining a motor and a gear synchronous belt, a cylinder, or other power components. In this embodiment, the Y-axis transmission mechanism 31 and X-axis transmission mechanism 32 are power components combining a motor and a ball screw, and the Z-axis transmission mechanism 33 is a cylinder. The specific structure will not be described in detail.

[0052] The glue application structure includes a glue head 34, which is installed at the drive end of the Z-axis transmission mechanism 33. The glue head 34 contains glue liquid to apply glue to the base plate and replenish glue.

[0053] The adhesive application structure also includes other supporting equipment, such as a glue tank for storing adhesive liquid and other conventional structures, which work together with the glue head 34 to achieve glue replenishment and application. This application does not make any improvements to the supporting equipment, so it will not be described in detail here.

[0054] This application performs online inspection of the adhesive application quality during the base plate application process. When defects are found in the adhesive application, the base plate is promptly returned to the adhesive application station for touch-up application until the adhesive application quality meets the requirements. Compared with the existing process of manually inspecting the adhesive application quality and configuring additional touch-up equipment, this application achieves automatic online inspection, which is highly efficient and accurate. At the same time, the adhesive application structure combines adhesive application and touch-up functions, enabling adhesive application and touch-up of the base plate to be performed at the same station, and the overall equipment is compact.

[0055] The clamping mechanism 35 includes a clamping cylinder and a clamping plate. The clamping cylinder is fixed to the production line plate, and its output shaft is connected to the clamping plate. Activation of the clamping cylinder controls the extension and retraction of the clamping plate, thereby clamping or releasing the base plate. The clamping mechanism 35 comprises two sets, distributed along the production line plate 11. The clamping plates of the two sets of clamping mechanisms 35 clamp the base plate 4 on both sides. In this embodiment, the structure of the clamping mechanism 35 is the same as that of the stop extension device 23, and will not be described in detail here.

[0056] In other structures, the production line mechanism 1 can also adopt a conventional combination structure of production line motion motor and conveyor belt, with the stop telescopic device installed on both sides of the conveyor belt.

[0057] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort should fall within the protection scope of this utility model.

Claims

1. A gluing device for the base plate of a sewing machine, characterized in that: It includes a production line mechanism, an inspection mechanism, and an adhesive application mechanism. The production line mechanism includes an inspection station and an adhesive application station. The inspection mechanism is located at the inspection station, and the adhesive application mechanism is located at the adhesive application station. The inspection mechanism includes a stop telescopic device, an inspection seat, and a photoelectric triggering device and a vision inspection device installed on the inspection seat. The adhesive application mechanism includes a three-way transmission mechanism and an adhesive application structure installed on the three-way transmission mechanism.

2. The sewing machine base plate adhesive application device according to claim 1, characterized in that: The production line mechanism includes a production line plate and a fixed frame. The production line plate is mounted on the fixed frame. The production line plate includes two sets of parallel crossbars and rollers. Several rollers are located between the crossbars and are arranged in an array along the y-axis. The rollers are movably connected to the crossbars and are powered by the production line motion motor.

3. The sewing machine base plate adhesive applicator according to claim 1, characterized in that: The detection base includes an upper base and a lower base, with a photoelectric triggering device and a visual detection device installed on the upper base.

4. The sewing machine base plate adhesive applicator according to claim 1, characterized in that: The photoelectric triggering device includes a photoelectric sensor that senses the presence or absence of a base plate at the detection station and sends an electrical signal to the vision detection device, which then outputs a corresponding signal based on the electrical signal.

5. The sewing machine base plate adhesive applicator according to claim 3, characterized in that: The visual inspection device includes a camera, a dome light source, a fixed-focus lens, and a visual controller. The visual controller is connected to a photoelectric sensor circuit, and the camera is connected to the visual controller circuit. The visual controller has a built-in defect detection system.

6. The sewing machine base plate adhesive applicator according to claim 3, characterized in that: The testing mechanism also includes a display, which is mounted on the upper seat.

7. The sewing machine base plate adhesive applicator according to claim 3, characterized in that: The upper seat and the lower seat are connected by a linkage structure, which is adjustable.

8. The sewing machine base plate adhesive applicator according to claim 7, characterized in that: The linkage structure includes an upper linkage and a lower linkage. The upper linkage is fixedly connected to the upper seat, the lower linkage is fixedly connected to the lower seat, and the lower linkage is fixedly connected to the production line plate. The upper linkage and the lower linkage are adjustable.

9. A sewing machine base plate adhesive applicator according to claim 2, characterized in that: The block telescopic device is fixed on the production line plate. The block telescopic device includes a telescopic cylinder, a block, a pneumatic solenoid valve, and a fixing plate. The telescopic cylinder is fixed on the production line plate through the fixing plate. The block is fixed on the power output rod of the telescopic cylinder. The pneumatic solenoid valve and the telescopic cylinder are connected through an air pipe. The power line of the pneumatic solenoid valve is connected to one output terminal of the vision controller. The block is located between two rollers.

10. A sewing machine base plate adhesive applicator according to claim 5, characterized in that: The camera is fixedly connected to the upper frame profile; the fixed-focus lens is fixed on the camera; the dome light source is fixedly connected to the profile; the vision controller and the light source controller are fixed on the lower frame.

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