Automatic cloth adjusting device for mask machine

Abstract

The automatic cloth adjusting device for the mask machine comprises a supporting frame body, and a plurality of cloth placing frames are installed on the top of the supporting frame body. An electric lifting frame is arranged on the portion, on one side of each cloth placing frame, of the supporting frame body, a mounting base is mounted at the top of each electric lifting frame and located above the corresponding cloth placing frame, two parallel limiting rods are arranged on one side of each mounting base, a gap is formed between the limiting rods, and cloth coming out of each cloth placing frame is arranged in the corresponding gap. And a sensor bracket parallel to the limiting rod is also arranged on each mounting seat. When the cloth feeding device is used, cloth is placed, if one cloth layer is loosened, the cloth sinks towards the direction of the inductor, when the inductor induces the change, the electric lifting frame automatically drives the limiting rod to adjust until the specific value between the cloth and the inductor reaches a preset value, operation is easy, use is convenient, and the cloth feeding device is suitable for popularization and application. Looseness of the cloth can be automatically sensed through the sensor, and then automatic adjustment is carried out.

Description

Technical Field

[0001] The utility model relates to the technical field of mask preparation, in particular to an automatic adjustment device for fabric on a mask machine. Background Art

[0002] Masks are made from multiple layers of fabric. During mask production, the layers are stacked one by one and fed into the mask production machine. To ensure the mask fabric remains taut, a tensioning device is required to maintain a certain tension on the fabric and prevent it from loosening.

[0003] For example, the fabric tension adjustment device for a mask machine proposed in the document number "CN218931223U" states at the end

[0026] of the specification that the driving motor is controlled to rotate, and the driving motor will drive the ball screw to rotate, and finally drive the adjusting roller to move downward or upward stably to adjust the fabric tension, that is, to make the adjusting roller press the fabric. However, this pressing method can only press one layer of fabric, such as Figure 4 As shown in FIG, during the production of masks, multiple layers of fabric need to be stacked up, and the tensioning mechanism proposed in the patent cannot effectively adjust the multiple layers of fabric. To this end, we propose an automatic adjustment device for fabric on a mask machine. Utility Model Content

[0004] The utility model provides an automatic adjustment device for fabric on a mask machine, which has the advantage that when the fabric sinks toward the sensor and the sensor senses the change, the electric lifting frame automatically drives the limit rod to adjust, thereby solving the problems raised in the above background technology.

[0005] The technical solution of the utility model is achieved as follows: an automatic adjustment device for fabrics on a mask machine, comprising a support frame, with multiple cloth placing racks installed on the top of the support frame; an electric lifting frame is provided on the support frame on one side of each cloth placing rack, and a mounting seat is installed on the top of the electric lifting frame, and the mounting seats are all located above the cloth placing rack, and two parallel limit rods are respectively provided on one side of the mounting seat, with gaps between the limit rods, and the cloths coming out of each cloth placing rack are arranged in the corresponding gaps; a sensor bracket parallel to the limit rod is also provided on each mounting seat, and an inductor is provided at the end of the sensor bracket, and the inductors are respectively located below the limit rods; the inductors are connected to the control device, and the control device is respectively connected to the electric lifting frame.

[0006] Preferably, a bracket is provided at one end of the top of the support frame, two clamping rods are provided on the top of the bracket, and a gap is provided between the clamping rods.

[0007] Preferably, the cloth placing rack includes a plurality of load-bearing shafts placed horizontally above the supporting frame body, one end of the load-bearing shafts are rotatably mounted in bearing seats, and the bearing seats are mounted on the supporting frame body; the load-bearing shafts extend to the bottom of the limit rod, and the load-bearing shafts below the limit rod are provided with a locking device for fixing the cloth roll in position; one end of each load-bearing shaft away from the limit rod is connected to the drive motor through a transmission mechanism, and the multiple load-bearing shafts rotate synchronously under the drive of the drive motor.

[0008] Preferably, the locking device includes a baffle coaxially arranged at one end of the load-bearing shaft near the bearing seat, and the cloth roll is sleeved on the load-bearing shaft and contacts the baffle; threaded columns are coaxially provided at the end of the load-bearing shaft away from the baffle, and a locking knob is threadedly connected to the threaded column; the locking device also includes a sleeve, which is loosely fitted on the end of the load-bearing shaft, and a pressure plate is coaxially provided at the end of the sleeve near the baffle, and the sleeve is driven forward toward the cloth roll by tightening the locking knob, so that the pressure plate is pressed on the side of the cloth roll away from the baffle.

[0009] Preferably, the transmission mechanism includes synchronous wheels provided on the end of the bearing shaft and on the rotating shaft of the driving motor, and the synchronous wheels are connected by a synchronous belt.

[0010] Preferably, the electric lifting frame includes a fixing frame respectively arranged on one side of the support frame body, a screw drive module is provided on one side of the fixing frame, and a connecting seat is installed on the slider of the screw drive module; at least one support shaft is vertically installed on the top of the connecting seat, and a guide support is movably provided on the support shaft, and the guide support is installed on the side of the support frame body, and the support shafts extend to the top of the support frame body and are connected to the bottom of the mounting seat.

[0011] Preferably, the supporting frame body and the bottom of the fixing frame are both arranged on the bottom plate.

[0012] Preferably, the control device includes a control cabinet installed on the side of the support frame, and a controller is provided in the control cabinet. The controller is respectively connected to the screw drive module, the sensor, and the drive motor.

[0013] Compared with the prior art, the present invention is simple to operate and easy to use. When placing the cloth, if one layer of the cloth becomes loose, the cloth will sink toward the sensor. When the sensor senses the change, the electric lifting frame automatically drives the limit rod to adjust until the distance between the cloth and the sensor reaches the preset value. The utility model can be automatically sensed by the sensor when the cloth is loose, and then automatically adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 It is a schematic diagram of the front structure of the utility model.

[0016] Figure 2 This is a schematic diagram of the rear structure of the utility model Figure 1 .

[0017] Figure 3 This is a schematic diagram of the rear structure of the utility model Figure 2 .

[0018] Figure 4 It is the main view of the utility model.

[0019] In the figure: 1. Support frame; 2. Bearing seat; 3. Synchronous wheel; 4. Load-bearing shaft; 5. Baffle; 6. Pressure plate; 7. Sleeve; 8. Locking knob; 9. Threaded column; 10. Base plate; 11. Control cabinet; 12. Bracket; 13. Mounting seat; 14. Clamping rod; 15. Limit rod; 16. Drive motor; 17. Screw drive module; 18. Support shaft; 19. Connecting seat; 20. Sensor; 21. Guide support; 22. Fixing bracket; 23. Sensor bracket. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solution of the present invention in conjunction with the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Reference Figures 1 to 4 The utility model provides a technical solution: an automatic adjustment device for fabric on a mask machine, comprising a support frame 1, the support frame 1 and the bottom of the fixing frame 22 are both arranged on a bottom plate 10, in order to better support the bottom plate 10, the two sides of the bottom plate 10 are respectively provided with outwardly extending parts (such as Figure 1 The position indicated by the arrow A in the middle) increases the support area of ​​the bottom plate 10, and at the same time, the extended portion and the support frame body 1 are connected by a reinforcement frame (such as Figure 1 Connect to the position indicated by arrow B).

[0022] There are multiple cloth racks installed on the top of the support frame 1. Because the mask has multiple layers, the number of cloth racks corresponds to the number of mask layers. The cloth rack includes multiple bearing shafts 4 placed horizontally above the support frame 1. One end of the bearing shaft 4 is rotatably mounted in the bearing seat 2. The bearing seat 2 is mounted on the support frame 1. Figure 1 As shown, there are two bearing seats 2, so that the bearing shaft 4 is supported by two bearing seats 2 at the same time, making the bearing shaft 4 more stable. When in use, the cloth roll is placed on the bearing shaft 4, and the bearing shaft 4 supports the cloth roll. In order to keep the cloth roll fixed, a locking device is also provided on the bearing shaft 4;

[0023] like Figure 1 As shown, the locking device includes a baffle 5 coaxially arranged on the end of the load-bearing shaft 4 near the bearing seat 2, and the cloth roll is sleeved on the load-bearing shaft 4 and contacts the baffle 5. A threaded column 9 is coaxially provided at the end of the load-bearing shaft 4 away from the baffle 5, and a locking knob 8 is threadedly connected to the threaded column 9, wherein the locking device also includes a sleeve 7, which is sleeved on the end of the load-bearing shaft 4 with a clearance fit, and a pressure plate 6 is coaxially provided at the end of the sleeve 7 near the baffle 5. When the sleeve 7 is sleeved on the end of the load-bearing shaft 4, since there is a cloth roll between the pressure plate 6 and the baffle 5, the end of the sleeve 7 away from the cloth roll is located on the threaded column 9. At this time, the sleeve 7 can be driven to advance in the direction of the cloth roll by tightening the locking knob 8, so that the pressure plate 6 is pressed on the side of the cloth roll away from the baffle 5. In this way, the cloth roll can be firmly fixed on the load-bearing shaft 4, and it is fixed by tightening the knob, which is convenient for installation and disassembly.

[0024] During the process of placing the cloth, each bearing shaft 4 rotates synchronously, that is, the end of each bearing shaft 4 away from the baffle 5 is connected to the drive motor 16 through a transmission mechanism, and the drive motor 16 drives the multiple bearing shafts 4 to rotate synchronously. Figure 3 As shown, the transmission mechanism includes a synchronous wheel 3 arranged on the end of the load-bearing shaft 4 and the rotating shaft of the drive motor 16. The synchronous wheels 3 are connected by a synchronous belt. Of course, they can also be replaced by sprockets and chains here. Therefore, when the drive motor rotates, it can drive each load-bearing shaft 4 to move at the same time, so that each cloth roll can be released synchronously at the same time.

[0025] The most important thing in this application is that an electric lifting frame is provided on the support frame 1 on each side of the cloth rack. Figure 3 will make Figure 4 As shown, the electric lifting frame includes a fixing frame 22 respectively provided on one side of the support frame body 1. The bottom of the fixing frame 22 is connected to the bottom plate 10. The support frame body 1 is a U-shaped frame with the opening facing downward. The fixing frame 22 can support the middle part of the support frame body 1, making the support frame body 1 more solid.

[0026] A screw drive module 17 is provided on one side of each fixing frame 22, and a connecting seat 19 is installed on the slider of the screw drive module 17. Figure 3 and Figure 4 As shown, at least one support shaft 18 is vertically mounted on the top of the connecting seat 19. In reality, there are two support shafts 18. A guide support 21 is movably mounted on each support shaft 18. The guide support 21 is mounted on the side of the support frame 1. The support shafts 18 extend above the support frame 1 and are connected to the bottom of the mounting seat 13.

[0027] The specific lifting process is very simple, that is, the screw drive module 17 drives the support shaft 18 to move up and down through the connecting seat 19, thereby allowing the mounting seat 13 to move up and down.

[0028] When the mounting base 13 is mounted on the top of the electric lifting frame, it should be noted that the mounting base 13 is located above the cloth rack, and two parallel limit rods 15 are provided on one side of the mounting base 13. There is a gap between the limit rods 15, and the locking device and the bearing shaft 4 extend below the limit rods 15. Figure 4 As shown, because the cloth coming out of each cloth rack must be limited, otherwise the cloths from multiple cloth racks will inevitably be tangled together, so the cloth coming out of each cloth rack is arranged in the corresponding gap, that is, the limiting rod 15 supports the cloth above the cloth roll to prevent the cloth from sinking;

[0029] Each mounting base 13 is also equipped with a sensor bracket 23 parallel to the limit rod 15. The end of the sensor bracket 23 is equipped with a sensor 20, which is located below the limit rod 15. The distance between the sensor 20 and the sensor 20 is due to the fact that when the cloth is laid, the lengths of multiple cloth rolls cannot be 100% matched when they are initially laid. There is always a problem that one of the multiple cloth layers will be loose. Therefore, the screw drive module 17 can be used to drive the mounting base 13 up and down, and the mounting base 13 drives the limit rod 15 up and down to straighten the cloth. During use, if the cloth becomes loose and bent, the cloth will sink toward the sensor 20. When the sensor 20 senses this change, the electric lifting frame automatically drives the limit rod 15 to adjust until the specific distance between the cloth and the sensor 20 reaches the preset value.

[0030] It should be noted that the length of each cloth is roughly fixed at the place where the cloth is placed, so the length difference between each cloth is small, so the lifting and lowering of the screw drive module 17 can effectively adjust the error.

[0031] like Figure 4As shown, the cloths coming out of each cloth roll will be stacked together and then enter the mask making device, so a bracket 12 is provided at one end of the top of the support frame 1, and two clamping rods 14 are provided on the top of the bracket 12. There is a gap between the clamping rods 14, and multiple layers of cloth are stacked together between the two clamping rods 14;

[0032] It should be noted again that the height of the limit rod 15 starts from the bracket 12, and the height of each limit rod 15 increases step by step, so that the cloth on the next cloth rack is always above the previous layer of cloth, so that multiple layers of cloth can be stacked one by one. The height of the limit rod 15 can be achieved by adjusting the screw drive module 17, or by setting support shafts 18 of different heights.

[0033] Among them, the sensor 20 is connected to the control device, and the control device is respectively connected to the electric lifting frame. The specific structure of the control device includes a control cabinet 11 installed on the side of the support frame 1. A controller is provided in the control cabinet 11. The controller is a PLB circuit board, a host or a PLC logic controller. The controller is respectively connected to the screw drive module 17, the sensor 20, and the drive motor 16; buttons and operation screens can also be set on the surface of the control cabinet 11, and the buttons and operation screens are respectively connected to the controller.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An automatic adjustment device for fabric on a mask machine, comprising a support frame (1), characterized in that: A plurality of cloth racks are installed on the top of the support frame (1); An electric lifting frame is provided on the support frame (1) on one side of each cloth placing rack, a mounting seat (13) is installed on the top of the electric lifting frame, the mounting seat (13) is located above the cloth placing rack, two parallel limiting rods (15) are provided on one side of the mounting seat (13), a gap is provided between the limiting rods (15), and the cloth coming out of each cloth placing rack is arranged in the corresponding gap; A sensor bracket (23) parallel to the limiting rod (15) is also provided on each mounting seat (13), and an inductor (20) is provided at the end of the sensor bracket (23), and the inductor (20) is respectively located below the limiting rod (15); The sensor (20) is connected to the control device, and the control device is connected to the electric lifting frame respectively.

2. The automatic adjustment device for fabric on a mask machine according to claim 1, characterized in that: A bracket (12) is provided at one end of the top of the support frame (1), two clamping rods (14) are provided on the top of the bracket (12), and a gap is provided between the clamping rods (14).

3. The automatic adjustment device for fabric on a mask machine according to claim 1, characterized in that: The cloth placing frame comprises a plurality of bearing shafts (4) placed transversely above the supporting frame body (1), one end of the bearing shafts (4) is rotatably mounted in a bearing seat (2), and the bearing seat (2) is mounted on the supporting frame body (1); The bearing shaft (4) extends to the bottom of the limiting rod (15), and a locking device for fixing the cloth roll in place is provided on the bearing shaft (4) below the limiting rod (15); One end of each bearing shaft (4) away from the limiting rod (15) is connected to the driving motor (16) through a transmission mechanism, and the multiple bearing shafts (4) are driven by the driving motor (16) to rotate synchronously.

4. The automatic adjustment device for fabric on a mask machine according to claim 3, characterized in that: The locking device comprises a baffle (5) coaxially arranged on one end of the bearing shaft (4) close to the bearing seat (2), and the cloth roll is sleeved on the bearing shaft (4) and contacts the baffle (5); A threaded column (9) is coaxially provided at one end of the load-bearing shaft (4) away from the baffle (5), and a locking knob (8) is threadedly connected to the threaded column (9); The locking device also includes a sleeve (7) which is loosely fitted on the end of the bearing shaft (4), and a pressure plate (6) is coaxially provided at one end of the sleeve (7) close to the baffle (5). By tightening the locking knob (8), the sleeve (7) is driven to advance in the direction of the cloth roll, so that the pressure plate (6) is pressed on the side of the cloth roll away from the baffle (5).

5. The automatic adjustment device for fabric on a mask machine according to claim 4, characterized in that: The transmission mechanism comprises synchronous wheels (3) arranged on the end of a bearing shaft (4) and on a rotating shaft of a driving motor (16), and the synchronous wheels (3) are connected via a synchronous belt.

6. The automatic adjustment device for fabric on a mask machine according to claim 5, characterized in that: The electric lifting frame includes a fixing frame (22) respectively arranged on one side of the supporting frame body (1), a screw drive module (17) is provided on one side of the fixing frame (22), and a connecting seat (19) is installed on the slider of the screw drive module (17); At least one support shaft (18) is vertically mounted on the top of the connecting seat (19), and a guide support (21) is movably mounted on each support shaft (18). The guide support (21) is mounted on the side of the support frame (1), and the support shafts (18) extend above the support frame (1) and are connected to the bottom of the mounting seat (13).

7. The automatic adjustment device for fabric on a mask machine according to claim 6, characterized in that: The bottoms of the supporting frame (1) and the fixing frame (22) are both arranged on the bottom plate (10).

8. The automatic adjustment device for fabric on a mask machine according to claim 6, characterized in that: The control device comprises a control cabinet (11) mounted on the side of the support frame (1). A controller is provided in the control cabinet (11). The controller is respectively connected to the lead screw drive module (17), the sensor (20), and the drive motor (16).

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