Lift change mechanism for a sewing machine

Abstract

The application discloses a lifting die changing mechanism of a sewing machine, which comprises a machine body and a table plate installed on the machine body, a die plate for fixing products is arranged on the table plate, lifting assemblies are installed on both sides of the machine body, the lifting assembly comprises a conveying belt and a first air cylinder fixedly installed on the conveying belt, a mounting plate is installed on the lifting block of the first air cylinder, at least one traction assembly is arranged on the mounting plate, the traction assembly comprises a second air cylinder and a clamping block, the clamping block is installed on the telescopic section of the second air cylinder, connecting pieces are arranged on both sides of the die plate, and clamping grooves matched with the clamping blocks are arranged on the connecting pieces. When the die plate needs to be changed, the first air cylinder is first moved to a specified position and drives the traction assembly to fall, the second air cylinder controls the clamping blocks to be clamped with the clamping grooves, then the first air cylinder drives the traction assembly to synchronously lift the die plate, and the die plate is further prevented from falling due to the outward pulling force on both sides and the weight of the die plate.

Description

Technical Field

[0001] This application relates to the field of sewing machine technology, and more particularly to a lifting and changing mechanism for a sewing machine. Background Technology

[0002] With the development of technology, traditional manual sewing machines have been gradually replaced by automatic sewing machines. Automatic sewing machines generally place the product to be processed into a template, and then convey the template to the bottom of the sewing head for sewing. After the product is processed, the template needs to be removed quickly, otherwise it will affect the advancement of subsequent templates. For some large sewing machines, there is a certain distance between the sewing head and the edge of the sewing machine, making it difficult for the operator to easily remove the template.

[0003] For some large sewing machines, the distance between the sewing head and the edge of the machine makes it difficult for the operator to easily remove the template. Therefore, currently, templates are mostly transported to the sewing head via a conveyor mechanism for sewing, and then transported back out via the same mechanism after the product is sewn. While this avoids the step of manually removing the template, it also reduces the processing efficiency of the product because it occupies the conveyor mechanism. Utility Model Content

[0004] One objective of this application is to provide a lifting and changing mechanism for a sewing machine that can solve at least one of the defects in the aforementioned background art.

[0005] To achieve at least one of the above objectives, the technical solution adopted in this application is as follows: a lifting and changing mechanism for a sewing machine, comprising a machine body and a platform mounted on the machine body, wherein a template for fixing products is placed on the platform, and lifting components are installed on both sides of the machine body; the lifting components include a conveyor belt and a first cylinder fixedly mounted on the conveyor belt, an mounting plate is mounted on the lifting block of the first cylinder, and at least one traction component is provided on the mounting plate, the traction component including a second cylinder and a locking block, the locking block being installed on the telescopic section of the second cylinder; connecting members are provided on both sides of the template, and the connecting members are provided with locking grooves that cooperate with the locking block.

[0006] With the above setup, the template can be lifted and conveyed to the edge of the platform via the lifting assembly. This avoids affecting the advancement of subsequent templates and allows operators to easily remove the processed product. After the product is processed, the first cylinder drives the traction assembly to descend, then the second cylinder controls the locking block to engage with the slot, and finally the first cylinder drives the traction assembly to lift the template, which then moves with the conveyor belt to the edge of the platform.

[0007] Preferably, each mounting plate has two traction components, with the two traction components installed at opposite ends of the mounting plate. This arrangement further improves the connection stability between the traction components and the template, preventing the template from swaying when raised.

[0008] Preferably, the slot comprises a placement opening and a engagement opening, and the placement opening and the engagement opening are connected; wherein the size of the placement opening is larger than the size of the card block, and the size of the engagement opening is smaller than the size of the card block. With this configuration, the card block can quickly enter the slot through the placement opening, and then the telescopic section of the second cylinder retracts, engaging the card block with the engagement opening, thereby achieving a fixed connection of the template.

[0009] Preferably, a clamping assembly is installed on the conveyor belt. The clamping assembly includes a first clamping plate and a second clamping plate. A connecting plate is installed at the bottom of the first cylinder, and the connecting plate is fixedly connected to the first clamping plate. The second clamping plate and the first clamping plate are respectively disposed on the inner and outer sides of the conveyor belt and cooperate to clamp the conveyor belt. With this configuration, the first cylinder can be fixedly installed on the conveyor belt by the clamping cooperation of the first clamping plate and the second clamping plate, ensuring that the first cylinder can rotate synchronously with the conveyor belt.

[0010] Preferably, there are multiple clamping plate assemblies arranged on the connecting plate. This arrangement can further improve the connection stability between the connecting plate and the conveyor belt and prevent relative movement between the connecting plate and the conveyor belt.

[0011] Preferably, the width of the first clamping plate and the second clamping plate is greater than the width of the conveyor belt. The first clamping plate and the second clamping plate are provided with at least one set of aligned through holes, which are offset from the conveyor belt. Each set of through holes contains a fastener, and the mating surfaces of the through holes and the fasteners are provided with a mutually engaging fixing structure. This configuration allows the distance between the first clamping plate and the second clamping plate to be limited by the fasteners, further improving the clamping effect of the clamping plate assembly on the conveyor belt. In case of cylinder failure, the first cylinder can be quickly removed from the conveyor belt using the fasteners.

[0012] Preferably, the mating surfaces of the first clamping plate and / or the second clamping plate are provided with an anti-slip structure. This configuration can further improve the clamping effect of the first and second clamping plates on the conveyor belt, and prevent slippage between the clamping plate assembly and the conveyor belt, which could cause the position of the first cylinder on the conveyor belt to change.

[0013] Preferably, a support plate is also installed on the connecting plate. The support plate is perpendicular to the machine body, and the first cylinder is fixedly installed on the support plate. A support member is installed on the support plate, with one end of the support member fixedly connected to the support plate and the other end fixedly connected to the first cylinder. This configuration allows the support plate to be used to install the first cylinder, enabling quick repair by replacing the first cylinder if it malfunctions. The support member further improves the installation stability of the first cylinder, preventing it from shifting during operation.

[0014] Preferably, the machine body is also equipped with a motor, and a shaft is rotatably mounted on the motor. One end of the shaft, away from the motor, extends into the interior of the conveyor belt and engages with the inner surface of the conveyor belt via gears. With this configuration, the motor drives the shaft to rotate left and right. When the shaft rotates, the gears provide power to the conveyor belt, causing it to rotate.

[0015] Preferably, the shaft includes a first rod body and a second rod body. The first rod body is connected to the motor, and the second rod body is connected to the gear. The first rod body and the second rod body are integrally connected by a coupling. This configuration effectively reduces the installation difficulty of the shaft. The user can first install the motor along with the first rod body onto the machine body, and then install the second rod body, fixing the first rod body and the second rod body together with the coupling.

[0016] Compared with the prior art, the beneficial effects of this application are as follows: The lifting components are installed on both sides of the machine body, which can effectively improve the speed of template replacement. When not in operation, the first cylinder keeps the template in the raised state. When the template needs to be replaced, the traction component will move to the designated position and lower. At this time, the second cylinder controls the locking block to engage with the locking slot, and then the first cylinder drives the traction component to lift the template and move it to the edge of the platform with the conveyor belt to avoid affecting the advancement of subsequent templates.

[0017] The first cylinder can be fixedly installed on the conveyor belt by the clamping action of the first and second clamping plates, ensuring that the first cylinder can rotate synchronously with the conveyor belt. Because the template is subjected to outward pulling force from both sides, coupled with the template's own weight, it is further ensured that the template will not slip. The slot consists of two placement openings and a locking opening of different sizes. The locking block can quickly enter the slot through the placement opening, and then the telescopic section of the second cylinder retracts, locking the locking block into the locking opening, thereby achieving a fixed connection of the template and preventing excessive movement of the traction component from causing significant template shaking. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the template lifting and changing mechanism in this application.

[0019] Figure 2 for Figure 1 A magnified structural diagram of part A in the middle.

[0020] Figure 3 for Figure 1 A magnified structural diagram of part B in the middle section.

[0021] Figure 4 This is an enlarged structural diagram of the template in this application.

[0022] Figure 5 This is a partial cross-sectional structural diagram of the template lifting and changing mechanism in this application.

[0023] Figure 6 This is a partial structural diagram of the template lifting and changing mechanism in this application.

[0024] In the diagram: 1. Machine body; 11. Platform; 100. Template; 101. Connector; 2. Lifting assembly; 21. Conveyor belt; 22. First cylinder; 200. Mounting plate; 3. Traction assembly; 31. Second cylinder; 32. Clamping block; 300. Connecting plate; 4. Slot; 41. Placement port; 42. Engaging port; 400. Support plate; 401. Support component; 5. Clamping plate assembly; 51. First clamping plate; 52. Second clamping plate; 500. Motor; 501. Shaft; 502. Gear; 600. Coupling. Detailed Implementation

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] One aspect of this application provides a lifting and changing mechanism for a sewing machine, wherein a preferred embodiment is, for example... Figure 1 and Figure 2 As shown, the machine includes a body 1 and a platform 11 mounted on the body 1. A template 100 for fixing products is placed on the platform 11, allowing products to be sewn onto the template 100. Lifting components 2 are installed on both sides of the body 1. Each lifting component 2 includes a conveyor belt 21 and a first cylinder 22 fixedly mounted on the conveyor belt 21. An mounting plate 200 is mounted on the lifting block of the first cylinder 22. At least one traction component 3 is provided on the mounting plate 200. The traction component 3 can engage with the template 100 to ensure that the template 100 moves synchronously with the traction component 3. The lifting components 2 can lift the template 100 and convey it to the edge of the platform 11, avoiding interference with the subsequent advancement of the template 100 and allowing operators to easily remove the finished products.

[0030] Understandably, the working principle of this mechanism is as follows: When not in operation, the first cylinder 22 remains in a raised state. When the template 100 needs to be replaced, it will move to a designated position and descend. At this time, the second cylinder 31 controls the locking block 32 to extend outward and enter the locking groove 4. Then, the second cylinder 31 controls the locking block 32 to retract until it engages with the locking groove 4. Finally, the first cylinder 22 drives the traction component 3 to lift the template 100 and move it along the conveyor belt 21 to the edge of the platform 11 to avoid affecting the subsequent advancement of the template 100. In addition, because the template 100 is subjected to outward pulling forces from both sides, coupled with the weight of the template 100 itself, it can be further ensured that the template 100 will not slip.

[0031] Specifically, such as Figure 3 and Figure 4 As shown, the traction assembly 3 includes a second cylinder 31 and a locking block 32. The locking block 32 is installed on the telescopic section of the second cylinder 31. Connectors 101 are provided on both sides of the template 100, and the connectors 101 are provided with slots 4 that cooperate with the locking block 32. After the product processing is completed, the first cylinder 22 drives the traction assembly 3 to descend, then the second cylinder 31 controls the locking block 32 to engage with the slots 4, and finally the first cylinder 22 drives the traction assembly 3 to lift the template 100 and move it to the edge of the platform 11 along with the conveyor belt 21.

[0032] In this embodiment, as Figure 3 As shown, each mounting plate 200 has two traction components 3. The two traction components 3 are installed at both ends of the mounting plate 200 respectively. The two-point snap-fit ​​connection can further improve the connection stability between the traction component 3 and the template 100, and prevent the template 100 from shaking when it is raised.

[0033] Furthermore, such as Figure 3 As shown, the slot 4 consists of a placement opening 41 and a engagement opening 42, and the placement opening 41 and the engagement opening 42 are interconnected. The size of the placement opening 41 is larger than the size of the card block 32, and the size of the engagement opening 42 is smaller than the size of the card block 32. The card block 32 can quickly enter the slot 4 through the placement opening 41. Then, the telescopic section of the second cylinder 31 retracts and engages the card block 32 with the engagement opening 42, thereby achieving a fixed connection of the template 100.

[0034] It should be noted that the positions of the placement port 41 and the locking port 42 are not fixed. If the locking port 42 is close to the second cylinder 31, the force applied to the template 100 is an outward pulling force. If the placement port 41 is close to the second cylinder 31, the force applied to the template 100 is an inward pushing force.

[0035] It should be noted that the conveyor belt 21, as a wear-prone component, requires regular maintenance and replacement. Designing the first cylinder 22 and the conveyor point as non-removable would significantly increase the machine's maintenance costs.

[0036] Therefore, in this embodiment, as Figure 2 and Figure 5 As shown, the first cylinder 22 and the conveyor belt 21 are designed to be detachable. A clamping plate assembly 5 is installed on the conveyor belt 21. The clamping plate assembly 5 includes a first clamping plate 51 and a second clamping plate 52. A connecting plate 300 is installed at the bottom of the first cylinder 22, and the connecting plate 300 is fixedly connected to the first clamping plate 51. The second clamping plate 52 and the first clamping plate 51 are respectively disposed on the inner and outer sides of the conveyor belt 21 and cooperate to clamp the conveyor belt 21. When maintenance is required on the first cylinder 22 or the conveyor belt 21, it can be quickly disassembled through the clamping plate assembly 5.

[0037] It is understandable that, in order to further improve the connection stability between the connecting plate 300 and the conveyor belt 21, the number of clamping plate assemblies 5 can be set to multiple. Multiple clamping plate assemblies 5 are arranged on the connecting plate 300, which can effectively prevent relative movement between the connecting plate 300 and the conveyor belt 21.

[0038] Specifically, such as Figure 2As shown, the width of the first clamping plate 51 and the second clamping plate 52 is greater than the width of the conveyor belt 21. At least one set of aligned perforations are provided on the first clamping plate 51 and the second clamping plate 52, wherein the perforations are offset from the conveyor belt 21, and a fastener is installed in each set of perforations. The distance between the first clamping plate 51 and the second clamping plate 52 can be limited by the fasteners, further improving the clamping effect of the clamping plate assembly 5 on the conveyor belt 21. When the cylinder malfunctions, the first cylinder 22 can be quickly removed from the conveyor belt 21 by unscrewing the fasteners.

[0039] In addition, to further improve the fastening effect of the fasteners, the mating surfaces of the through holes and the fasteners are provided with mutually cooperating fixing structures. Specific fixing structures include, but are not limited to, snap-fit ​​mating and threaded mating, which can be selected by those skilled in the art according to actual needs.

[0040] Furthermore, such as Figure 5 As shown, the mating surfaces of the first clamping plate 51 and / or the second clamping plate 52 are provided with anti-slip structures. These anti-slip structures further improve the clamping effect of the first clamping plate 51 and the second clamping plate 52 on the conveyor belt 21, preventing slippage between the clamping plate assembly 5 and the conveyor belt 21 that could cause a change in the position of the first cylinder 22 on the conveyor belt 21. Specific anti-slip structures include, but are not limited to, anti-slip teeth, anti-slip pads, etc., which can be selected by those skilled in the art according to actual needs.

[0041] In this embodiment, as Figure 2 As shown, a support plate 400 is also installed on the connecting plate 300, and the support plate 400 is set perpendicular to the machine body 1. The first cylinder 22 is fixedly installed on the support plate 400; and a support member 401 is installed on the support plate 400, one end of the support member 401 is fixedly connected to the support plate 400, and the other end is fixedly connected to the first cylinder 22. The first cylinder 22 can be installed through the support plate 400, and when the first cylinder 22 fails, it can be quickly repaired by replacing the first cylinder 22. In addition, the support plate 400 can also protect the first cylinder 22 to reduce the risk of the first cylinder 22 being bumped; the support member 401 further improves the installation stability of the first cylinder 22 and prevents the first cylinder 22 from shifting during operation.

[0042] In this embodiment, as Figure 6 As shown, a motor 500 is also installed on the machine body 1. A shaft 501 is rotatably mounted on the motor 500. One end of the shaft 501, away from the motor 500, extends into the interior of the conveyor belt 21 and is in contact with the inner surface of the conveyor belt 21 via a gear 502. The motor 500 drives the shaft 501 to rotate left and right. When the shaft 501 rotates, the gear 502 provides power to the conveyor belt 21 and drives the conveyor belt 21 to rotate.

[0043] Additionally, to reduce the installation difficulty of shaft 501, it can be configured as a split structure; that is, shaft 501 includes a first rod body and a second rod body. The first rod body is connected to the motor 500, and the second rod body is connected to the gear 502. The first and second rod bodies are connected as a single unit via coupling 600. The user can first install the motor 500 along with the first rod body onto the machine body 1, and then install the second rod body, fixing the first and second rod bodies together via coupling 600.

[0044] 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 lifting and changing mechanism for a sewing machine, comprising a machine body (1) and a platform (11) mounted on the machine body (1), characterized in that, A template (100) for fixing products is placed on the platform (11). Lifting components (2) are installed on both sides of the machine body (1). The lifting components (2) include a conveyor belt (21) and a first cylinder (22) fixedly installed on the conveyor belt (21). An installation plate (200) is installed on the lifting block of the first cylinder (22). At least one traction component (3) is provided on the installation plate (200). The traction component (3) includes a second cylinder (31) and a locking block (32). The locking block (32) is installed on the telescopic section of the second cylinder (31). Connectors (101) are provided on both sides of the template (100). The connectors (101) are provided with slots (4) that cooperate with the locking block (32).

2. The lifting and mold-changing mechanism of the sewing machine as described in claim 1, characterized in that, The number of traction components (3) on each mounting plate (200) is two, and the two traction components (3) are respectively installed at both ends of the mounting plate (200).

3. The lifting and mold-changing mechanism of the sewing machine as described in claim 1, characterized in that, The slot (4) is composed of a placement opening (41) and a locking opening (42), and the placement opening (41) and the locking opening (42) are connected; wherein, the size of the placement opening (41) is larger than the size of the card block (32), and the size of the locking opening (42) is smaller than the size of the card block (32).

4. The lifting and mold-changing mechanism of the sewing machine as described in claim 1, characterized in that, A clamping plate assembly (5) is installed on the conveyor belt (21). The clamping plate assembly (5) includes a first clamping plate (51) and a second clamping plate (52). A connecting plate (300) is installed at the bottom of the first cylinder (22). The connecting plate (300) is fixedly connected to the first clamping plate (51). The second clamping plate (52) and the first clamping plate (51) are respectively disposed on the inner and outer sides of the conveyor belt (21) and cooperate to clamp the conveyor belt (21).

5. The lifting and mold-changing mechanism of the sewing machine as described in claim 4, characterized in that, The number of clamping plate assemblies (5) is multiple, and multiple clamping plate assemblies (5) are arranged on the connecting plate (300).

6. The lifting and mold-changing mechanism of the sewing machine as described in claim 4, characterized in that, The width of the first clamping plate (51) and the second clamping plate (52) is greater than the width of the conveyor belt (21). The first clamping plate (51) and the second clamping plate (52) are provided with at least one set of aligned perforations. The perforations are offset from the conveyor belt (21). Each set of perforations is equipped with a fastener. The mating surfaces of the perforations and the fasteners are provided with a mutually cooperating fixing structure.

7. The lifting and mold-changing mechanism of the sewing machine as described in claim 4, characterized in that, The mating surfaces of the first clamping plate (51) and / or the second clamping plate (52) are provided with anti-slip structures.

8. The lifting and mold-changing mechanism of the sewing machine as described in claim 4, characterized in that, A support plate (400) is also installed on the connecting plate (300). The support plate (400) is perpendicular to the machine body (1). The first cylinder (22) is fixedly installed on the support plate (400). A support member (401) is installed on the support plate (400). One end of the support member (401) is fixedly connected to the support plate (400), and the other end is fixedly connected to the first cylinder (22).

9. The lifting and mold-changing mechanism of the sewing machine as described in claim 1, characterized in that, The machine body (1) is also equipped with a motor (500), and a shaft (501) is rotatably mounted on the motor (500). One end of the shaft (501) away from the motor (500) extends into the interior of the conveyor belt (21) and is in contact with the inner surface of the conveyor belt (21) through a gear (502).

10. The lifting and mold-changing mechanism of the sewing machine as described in claim 9, characterized in that, The shaft (501) includes a first rod body and a second rod body. The first rod body is connected to the motor (500), and the second rod body is connected to the gear (502). The first rod body and the second rod body are integrally connected by a coupling (600).

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