Stretching device for cloth shaping and molding press

Abstract

The invention discloses a stretching device for cloth shaping, which comprises a clamping assembly for clamping cloth, a first lifting assembly for driving the clamping assembly to move in the vertical direction and a first rotating assembly for driving the clamping assembly to rotate, and the first rotating assembly is arranged on the first lifting assembly; the clamping assembly comprises a clamping mechanism used for clamping cloth, a telescopic driver used for driving the clamping mechanism to stretch out and draw back so as to stretch the cloth, and a rotating driver used for driving the clamping mechanism to rotate. The clamping assembly is arranged on the telescopic driver, and the telescopic driver is arranged on the rotary driver. According to the stretching device, cloth is clamped through the clamping mechanism, the clamping mechanism is driven by the telescopic drive to stretch the cloth, the clamping mechanism is driven by the rotary driver to rotate the cloth to an angle matched with a mold, and automatic stretching of the cloth in the heat setting process of the cloth is achieved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of automatic equipment and bra preparation, and particularly relates to a cloth stretching device used in a cloth hot setting and molding process and a molding machine comprising the stretching device. BACKGROUND

[0002] In the bra production process, there is a face cloth forming process, which is currently operated manually. The operation mode is relatively primitive. In the forming process, some special fabrics such as traceless face cloth need to be stretched to a fixed position by hand and adjusted. Since it is a high-temperature setting, there is a certain risk of burns to the hands. When using non-elastic fabric, manual adjustment is more difficult due to the large pulling force.

[0003] The disclosure of the above background art content is only used to assist in understanding the inventive concept and technical solutions of the present application, and it does not necessarily belong to the prior art of the present application. In the absence of explicit evidence that the above content has been disclosed before the filing date of the present application, the above background art should not be used to evaluate the novelty and inventiveness of the present application. SUMMARY

[0004] In view of this, in order to overcome the defects of the prior art, the purpose of the present application is to provide a stretching device for cloth setting, which realizes automatic stretching and positioning of the cloth during the hot setting process.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions: A stretching device for cloth setting, comprising a clamping assembly for clamping cloth, a first lifting assembly for driving the clamping assembly to move in the vertical direction, and a first rotating assembly for driving the clamping assembly to rotate, the first rotating assembly being arranged on the first lifting assembly; the clamping assembly comprises a clamping mechanism for clamping cloth, an extension driver for driving the clamping mechanism to extend and retract to stretch the cloth, and a rotating driver for driving the clamping mechanism to rotate; the clamping assembly is arranged on the extension driver, and the extension driver is arranged on the rotating driver.

[0006] According to some preferred embodiments of the present application, the clamping mechanism comprises a fixed part, a movable part, and a clamping driver for driving the movable part to move. The end of the movable part is driven by the clamping driver to approach or move away from the fixed part, and the movable part is preferably rotationally connected to the fixed part. The clamping driver is a gas cylinder.

[0007] According to some preferred embodiments of the present application, the clamping mechanism is arranged on the output shaft of the telescopic drive, and the rotary drive is used to drive the telescopic drive and the clamping mechanism to rotate synchronously around the axis of the telescopic drive. The telescopic drive is arranged between the rotary drive and the clamping mechanism. The telescopic drive drives the clamping mechanism to stretch, and drives the clamping mechanism to approach the fabric before the clamping mechanism clamps the fabric. After the clamping mechanism clamps the fabric, the telescopic drive drives the clamping mechanism to stretch the fabric. The rotary drive is used to drive the telescopic drive and the clamping mechanism to rotate around the axis of the telescopic drive after the clamping mechanism clamps the fabric, so that the fabric matches the curvature of the mold.

[0008] According to some preferred embodiments of the present application, the first lifting assembly comprises a fixing rod for fixing the clamping assembly and a vertical drive for driving the fixing rod to move vertically. The clamping assembly is fixed on the fixing rod, and the first lifting assembly drives the fixing rod to move, thereby driving the bottom of the clamping assembly to move to a suitable height position.

[0009] According to some preferred embodiments of the present application, the first rotating assembly comprises a rotating drive for driving the fixing rod to rotate around its axis. The rotating drive is used to directly drive the fixing rod to rotate around its axis, thereby driving the clamping assembly to rotate towards the mold.

[0010] According to some preferred embodiments of the present application, the stretching device comprises a vertical plate, and the first lifting assembly and the first rotating assembly are arranged on the vertical plate.

[0011] According to some preferred embodiments of the present application, the fixing rod penetrates through the vertical plate, and the vertical plate is provided with a moving groove for the fixing rod to penetrate through and move up and down. The first lifting assembly drives the fixing rod to move vertically in the moving groove.

[0012] According to some preferred embodiments of the present application, the bottom of the vertical plate is provided with a moving assembly for driving the vertical plate to approach or move away from the fabric to be stretched. After the vertical drive and the rotating drive drive the clamping assembly to move to a suitable position, the moving assembly drives the vertical plate and the clamping assembly, the first lifting assembly and the first rotating assembly on the vertical plate to move towards the mold, and retreats after one hot pressing is completed.

[0013] According to some preferred embodiments of the present application, one or more clamping assemblies are arranged on the fixed rod, and a lifting driver is arranged between the clamping assembly and the fixed rod. The clamping assembly corresponds to two sides of a mold or multiple molds. Since the curvature and height of the two sides of the mold are different, and the bottom of the clamping assembly is fixed on the fixed rod, the lifting driver is arranged between the fixed rod and the clamping assembly. After the clamping mechanism of the clamping assembly clamps the cloth and rotates, the lifting driver drives the corresponding clamping assembly to lift to fit the curvature of the mold.

[0014] According to some preferred embodiments of the present application, the stretching device comprises two opposite vertical plates, and the vertical driver is arranged on one vertical plate or opposite sides of the two vertical plates. In some embodiments, the stretching device comprises only one vertical driver, one side is a driving structure comprising a driving wheel, a driven wheel and a belt sleeved on the driving wheel and the driven wheel, the vertical driver drives the driving wheel to rotate, and the belt is fixed with a fixed block connected with the fixed rod; the other side is a driven driving structure similar to the driving structure, and the driving wheel of the driving structure and the driving wheel of the driven driving structure are connected by a transmission rod and are synchronously driven by the vertical driver. A rotating driver is arranged on the fixed block for driving the fixed rod to rotate.

[0015] The present application also provides a mold pressing machine comprising a lower plate and an upper plate for clamping cloth, a lower mold and an upper mold for shaping the cloth, and a stretching device as described above. The lower plate and the upper plate are provided with notches corresponding to the stretching device for stretching to avoid interference. In some embodiments, the lower plate is fixed, and the upper plate is driven to move by a cloth pressing driver, the lower mold is correspondingly provided with a first mold pressing driver, and the upper mold is correspondingly provided with a second mold pressing driver to realize mold pressing.

[0016] According to some preferred embodiments of the present application, a positioning device is arranged for positioning the stretching position of the stretching device on the cloth to stretch in place.

[0017] According to some preferred embodiments of the present application, the positioning device comprises a detection assembly, a second lifting assembly for driving the detection assembly to lift, and a second rotating assembly for driving the detection assembly to rotate. In some embodiments, the detection assembly can be a sensor or a visual detection camera, etc., the second rotating assembly is a rotary motor, and the second lifting assembly is a motor and a lead screw, the second rotating assembly is arranged on the lead screw and is driven by the motor to rotate the lead screw to drive the second rotating assembly to move up and down. When the clamping assembly clamps the cloth and stretches, the second rotating assembly rotates to the upper side of the mold and detects the cloth and the preset position. When the cloth is detected to stretch to the preset position, a corresponding signal is sent, the stretching device releases the cloth and retreats.

[0018] Compared with the prior art, the stretch device for fabric setting has the advantages that the fabric is clamped by the clamping mechanism, the clamping mechanism is driven by the telescopic drive to stretch the fabric, the fabric is rotated to an angle matched with the mold by the rotating drive, and the clamping assembly is moved to a position corresponding to the fabric by the first lifting assembly and the first rotating assembly to clamp and stretch the fabric, so that the automatic stretching of the fabric during the heat setting of the fabric is realized. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and all other drawings obtained by those skilled in the art without creative efforts based on these drawings should also fall within the scope of protection of the present application.

[0020] Figure 1 is a schematic diagram of the three-dimensional structure of the mold pressing machine in the embodiment of the present application. Figure 2 is a schematic diagram of the three-dimensional structure of the stretch device for fabric setting in the embodiment of the present application. Figure 3 is a schematic diagram of the three-dimensional structure of the positioning device in the embodiment of the present application. Figure 4 is a schematic diagram of the three-dimensional structure of the clamping assembly in the embodiment of the present application. In the drawings, the stretch device-1, the clamping assembly-11, the fixed part-21, the movable part-22, the clamping drive-23, the telescopic drive-31, the rotating drive-32, the fixed rod-51, the vertical drive-52, the transmission rod-53, the rotating drive-6, the vertical plate-7, the moving groove-71, the moving assembly-8, the lifting drive-9, the lower plate-101, the upper plate-102, the notch-103, the fabric pressing drive-104, the lower mold-111, the upper mold-112, the first mold pressing drive-113, the second mold pressing drive-114, the positioning device-12, the detection assembly-121, the second lifting assembly-122, and the second rotating assembly-123. DETAILED DESCRIPTION

[0021] In order to make the person skilled in the art better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts should fall within the scope of protection of the present application.

[0022] like Figures 1-4 As shown, the molding machine in this embodiment includes a lower plate 101 and an upper plate 102 for clamping fabric, a lower mold 111 and an upper mold 112 for heat-setting (molding) the fabric, a stretching device 1 for automatically clamping and stretching the fabric, and a positioning device 12 for positioning the stretched fabric. The lower plate 101 and upper plate 102 are provided with notches 103 corresponding to the stretching device 1 for stretching the fabric, avoiding interference. In this embodiment, the lower plate 101 is fixed, and the upper plate 102 is driven downward by a fabric pressing driver 104 to cooperate with the lower plate 101 to clamp the fabric. The lower mold 111 is correspondingly provided with a first molding driver 113 for driving the lower mold 111 to rise, and the upper mold 112 is correspondingly provided with a second molding driver 114 for driving the upper mold 112 to descend, thereby molding the fabric.

[0023] In this embodiment, the stretching device 1 for fabric shaping includes a vertical plate 7 and a first lifting assembly, a first rotating assembly, a clamping assembly 11, and a moving assembly 8 disposed on the vertical plate 7. The clamping assembly 11 is used to clamp the fabric and stretch it. The first lifting assembly is used to drive the clamping assembly 11 to move vertically. The first rotating assembly is used to drive the clamping assembly 11 to rotate and is disposed on the first lifting assembly. The moving assembly 8 is used to drive the vertical plate 7 to move closer to or away from the fabric to be stretched. After the vertical driver 52 and the rotating driver 6 drive the clamping assembly 11 to a suitable position, the moving assembly 8 drives the vertical plate 7 and its clamping assembly 11, the first lifting assembly, and the first rotating assembly to move toward the mold, and then retracts after one hot pressing is completed.

[0024] The first lifting assembly includes a fixing rod 51 for fixing the clamping assembly 11 and a vertical actuator 52 for driving the fixing rod 51 to move vertically. The clamping assembly 11 is fixed to the fixing rod 51. The first lifting assembly drives the fixing rod 51 to move, thereby moving the bottom of the fixing rod 51 and the clamping assembly 11 to a suitable height position.

[0025] The tensioning device 1 of this embodiment has two opposing vertical plates 7, and a vertical actuator 52 is disposed on the opposite outer side of the vertical plates 7. The tensioning device 1 includes only one vertical actuator 52. One side is an active drive, including an active wheel, a driven wheel, and a belt sleeved on the active wheel and the driven wheel. The vertical actuator 52 drives the active wheel to rotate, and a fixing block connected to the fixing rod 51 is fixed on the belt. The other side is a driven drive with a similar structure to the active drive. The active drive's active wheel and the driven drive's active wheel are connected by a transmission rod 53 and are synchronously driven by the vertical actuator 52. A rotation actuator 6 is disposed on the fixing block and is used to drive the fixing rod 51 to rotate.

[0026] A fixed rod 51 passes through a vertical plate 7, and a moving groove 71 is provided on the vertical plate 7 for the fixed rod 51 to pass through and move up and down. The first lifting component drives the fixed rod 51 to move vertically within the moving groove 71. In this embodiment, two clamping components 11 are provided on the fixed rod 51, and a lifting driver 9 is provided between one of the clamping components 11 and the fixed rod 51. The two clamping components 11 correspond to the two sides of a mold. At the same time, since the curvature and height of the two sides of the mold are different, and the bottom of the clamping components 11 are all fixed to the fixed rod 51, a lifting driver 9 is provided between the fixed rod 51 and the clamping components 11. After the clamping mechanism of the clamping component 11 clamps the fabric and rotates, the lifting driver 9 drives the corresponding clamping component 11 to move up and down to conform to the curvature of the mold.

[0027] The first rotating assembly includes a rotation driver 6, such as a motor, for directly driving the fixed rod 51 to rotate about its axis, thereby driving the clamping assembly 11 to rotate toward the mold.

[0028] The clamping assembly 11 in this embodiment includes a clamping mechanism for clamping fabric, a telescopic driver 31 for extending and retracting the clamping mechanism to stretch the fabric, and a rotary driver 32 (such as a rotary motor) for rotating the clamping mechanism. The clamping assembly 11 is mounted on the telescopic driver 31, which is mounted on the rotary driver 32. The clamping mechanism is mounted on the output shaft of the telescopic driver 31, and the rotary driver 32 drives the telescopic driver 31 and the clamping mechanism to rotate synchronously around the axis of the telescopic driver 31. The telescopic driver 31 is positioned between the rotary driver 32 and the clamping mechanism. The telescopic driver 31 drives the clamping mechanism to extend and retract. Before the clamping mechanism clamps the fabric, the telescopic driver 31 drives the clamping mechanism to approach the fabric; after the clamping mechanism clamps the fabric, the telescopic driver 31 drives the clamping mechanism to stretch the fabric. The rotary driver 32 drives the telescopic driver 31 and the clamping mechanism to rotate around the axis of the telescopic driver 31 after the clamping mechanism clamps the fabric, so that the fabric matches the curvature of the mold.

[0029] The clamping mechanism in this embodiment includes a fixed part 21, a movable part 22, and a clamping driver 23 for driving the movable part 22 to move. The clamping driver 23 drives the end of the movable part 22 to move closer to or away from the fixed part 21. Preferably, the movable part 22 is rotatably connected to the fixed part 21. The clamping driver 23 is a cylinder.

[0030] The positioning device 12 includes a detection component 121, a second lifting component 122 for driving the detection component 121 to rise and fall, and a second rotating component 123 for driving the detection component 121 to rotate. The detection component 121 can be an infrared sensor or a visual inspection camera, etc. The second rotating component 123 is a rotary motor, and the second lifting component 122 is a motor and a lead screw. The second rotating component 123 is mounted on the lead screw, and the motor drives the lead screw to rotate, thereby causing the second rotating component 123 to move up and down. When the clamping component 11 clamps the fabric and stretches it, the second rotating component 123 rotates to the top of the mold and detects the fabric and the preset position. When it detects that the fabric has been stretched to the preset position, it sends a corresponding signal, and the stretching device 1 releases the fabric and retracts.

[0031] The following is a brief description of the working process of the molding machine in this embodiment: The fabric that needs to be heat-set is laid on the lower plate 101, and the fabric pressing driver 104 drives the upper plate 102 to move downward, cooperating with the lower plate 101 to clamp the fabric.

[0032] The rotation driver 6 of the first rotating assembly is activated, driving the fixed rod 51 and the clamping assembly 11 fixed thereon to rotate, and the clamping assembly 11 rotates to a horizontal position. The vertical driver 52 of the first lifting assembly is activated, driving the fixed rod 51 to move in the vertical direction, ultimately moving the clamping assembly 11 to the same horizontal plane as the fabric for easy clamping. These two steps can be performed simultaneously or in any order.

[0033] The second rotating component 123 drives the detection component 121 to rotate above the mold for subsequent material positioning.

[0034] The clamping driver 23 drives the movable part 22 of the clamping mechanism to separate from the fixed part 21, and the telescopic driver 31 drives the clamping mechanism to extend forward and approach the fabric. When the fabric enters between the movable part 22 and the fixed part 21, the clamping driver 23 drives the movable part 22 of the clamping mechanism to close the fixed part 21 to clamp the fabric. The lifting driver 9 between the clamping assembly 11 and the fixing rod 51 operates at the same time as clamping or immediately after clamping, so that the two clamping assemblies 11 have different heights, corresponding to the different curvatures on both sides of the lower mold 111.

[0035] The first molding driver 113 drives the lower mold 111 to move upward, pressing against the fabric. Simultaneously, the first lifting component and the first rotating mechanism also move synchronously, causing the clamping component 11 to move and rotate upward along with the lower mold 111, thus stretching the fabric. Afterward, the first lifting component drives the clamping component 11 to fall back a certain distance, so that the fabric can better conform to the mold.

[0036] The detection component 121 detects the edge position of the fabric. If the edge of the fabric does not reach the preset position, it means that it is not stretched to the correct position, and the telescopic driver 31 retracts to stretch it to the correct position; if the edge of the fabric exceeds the preset position, it means that it is overstretched, and the telescopic driver 31 extends forward to make the edge of the fabric reach the preset position.

[0037] When the edge of the fabric reaches the preset position, the detection component 121 sends a corresponding signal, and the stretching device 1 retracts. Specifically, the clamping driver 23 drives the movable part 22 of the clamping mechanism to separate from the fixed part 21, releasing the fabric, which then adheres to the lower mold. The telescopic driver 31 drives the clamping mechanism to retract backward, the first rotating component drives the fixed rod 51 to rotate upward, causing the clamping component 11 to gradually become vertical, and the first lifting component drives the fixed rod 51 and the clamping component 11 to move downward. At the same time, the second rotating component 123 drives the detection component 121 to rotate back to its original position to avoid interference with the mold.

[0038] The second molding driver 114 drives the upper mold 112 to move downward, cooperating with the lower mold 111 to heat-set the fabric.

[0039] The stretching device 1 for fabric shaping in this embodiment clamps the fabric through a clamping mechanism, stretches the fabric through a telescopic drive, rotates the clamping mechanism to rotate the fabric to an angle that matches the mold through a rotary driver 32, and moves the clamping component 11 to the position corresponding to the fabric through a first lifting component and a first rotating component to clamp and stretch the fabric, thereby realizing automated stretching of the fabric during the fabric heat shaping process.

[0040] The above embodiments prepared by the method of the present invention are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A stretching device for shaping fabric, characterized in that, The device includes a clamping assembly for clamping fabric, a first lifting assembly for moving the clamping assembly vertically, and a first rotating assembly for rotating the clamping assembly. The first rotating assembly is mounted on the first lifting assembly. The clamping assembly includes a clamping mechanism for clamping fabric, a telescopic driver for extending and retracting the clamping mechanism to stretch the fabric, and a rotating driver for rotating the clamping mechanism. The clamping assembly is mounted on the telescopic driver, and the telescopic driver is mounted on the rotating driver.

2. The tensioning device according to claim 1, characterized in that, The clamping mechanism includes a fixed part, a movable part, and a clamping driver for driving the movable part to move.

3. The stretching device according to claim 1, characterized in that, The clamping mechanism is mounted on the output shaft of the telescopic driver, and the rotary driver is used to drive the telescopic driver and the clamping mechanism to rotate synchronously around the axis of the telescopic driver.

4. The tensioning device according to claim 1, characterized in that, The first lifting assembly includes a fixing rod for fixing the clamping assembly and a vertical actuator for driving the fixing rod to move in the vertical direction.

5. The stretching device according to claim 4, characterized in that, The first rotating assembly includes a rotation driver for driving the fixed rod to rotate about its axis.

6. The stretching device according to claim 4, characterized in that, The stretching device includes a vertical plate, and the first lifting component and the first rotating component are disposed on the vertical plate.

7. The stretching device according to claim 6, characterized in that, The fixing rod passes through the upright plate, and the upright plate has a moving groove for the fixing rod to move up and down.

8. The stretching device according to claim 6, characterized in that, The bottom of the upright plate is provided with a moving component, which is used to drive the upright plate closer to or away from the fabric to be stretched.

9. The stretching device according to claim 8, characterized in that, One or more clamping components are provided on the fixed rod, and a lifting drive is provided between the one or more clamping components and the fixed rod.

10. The stretching device according to claim 7, characterized in that, The stretching device includes two opposing vertical plates, and the vertical actuator is located on the outer side of one or both vertical plates.

11. A molding machine, comprising a lower plate and an upper plate for clamping fabric, a lower mold and an upper mold for shaping the fabric, characterized in that, Includes the tensioning device as described in any one of claims 1-10.

12. The molding machine according to claim 11, characterized in that, It includes a positioning device, which is used to position the stretching device on the fabric.

13. The molding machine according to claim 12, characterized in that, The positioning device includes a detection component, a second lifting component for driving the detection component to rise and fall, and a second rotating component for driving the detection component to rotate.

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