A kind of plaster processing and production use pressing device

Abstract

This utility model discloses a pressing device for plaster processing and production, belonging to the technical field of plaster processing and production equipment. Its key technical features include a workbench and a material discharge roll film assembly disposed on the top surface of the workbench. The top surface of the workbench is provided with an air extraction assembly for removing air bubbles, and the surface of the workbench is provided with a pressing and anti-wrinkle assembly for making the plaster film flat. This utility model, by setting up a symmetrically installed vacuum machine and air-gathering nozzle, can quickly remove the air between the film and the backing before pressing, preventing air bubble problems caused by residual gas. By using a pressing and anti-wrinkle assembly that works in conjunction with an electric push rod and a small cylinder, the backing and film can be partially raised and flattened by the top plate before pressing, and then uniform pressure is applied for pressing, significantly reducing wrinkles caused by material relaxation or uneven tension.

Description

Technical Field

[0001] This utility model belongs to the technical field of plaster processing and production equipment, specifically relating to a pressing device for plaster processing and production. Background Technology

[0002] In the traditional production process of plasters, pressing is a crucial step. Its core purpose is to firmly, smoothly, and without air bubbles bond the medicated plaster layer (or core) with the backing material (such as non-woven fabric, elastic fabric, or waterproof membrane), ensuring stable release of the medicine, comfortable adhesion, and minimal leakage during use.

[0003] A search revealed Chinese patent CN221068718U, which discloses a pressing device for plaster processing and production, including: a fixing frame, a raw material roller disposed between the fixing components, and clamping components disposed at both ends of the guide roller. However, when existing plasters are pressed for film protection, air bubbles are generated due to the gas between the film and the backing material, which easily leads to leakage of the plaster core. Utility Model Content

[0004] The purpose of this invention is to provide a pressing device for processing and producing plasters, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a pressing device for plaster processing and production, comprising a worktable and a discharge roll film assembly disposed on the top surface of the worktable, wherein the top surface of the worktable is provided with an air extraction assembly for removing air bubbles, the surface of the worktable is provided with a pressing and anti-wrinkle assembly for making the plaster film flat, the top surface of the worktable is provided with a tensioning mechanism for preventing the backing from being torn, and a driving mechanism is provided on one side of the tensioning mechanism;

[0006] The air extraction assembly includes two vacuum units symmetrically installed on the top surface of the workbench. The air inlet ends of each vacuum unit correspond to each other, and each vacuum unit has an air-gathering nozzle installed at its air inlet end. The air-gathering nozzle is located between the film and the backing.

[0007] Preferably, each of the two air-collecting nozzles has two rubber strips fixedly connected symmetrically to its corresponding ports, and the two rubber strips on the same side are respectively attached to the bottom surface of the film and the top surface of the backing.

[0008] Preferably, the pressing and anti-wrinkle assembly includes a first bracket fixedly connected to the top surface of the workbench by bolts. A fixing plate is fixedly connected to the top surface of the first bracket by bolts. An electric push rod is installed on the top surface of the fixing plate. The push rod of the electric push rod passes through the surface of the fixing plate and is fixedly connected to a pressing plate. The pressing plate is located above the film coating. A small cylinder is installed on the top surface of the workbench. The small cylinder is located directly below the electric push rod and is on the same axis as the electric push rod. The piston of the small cylinder is fixedly connected to a top plate, and the top plate is located below the backing.

[0009] Preferably, the first bracket has two sets of guide wheels symmetrically rotatably connected inside. Each set of guide wheels consists of two positioning wheels symmetrically arranged above and below, and the film and backing are located between each set of guide wheels.

[0010] Preferably, the top plate is located on both sides of the two sets of guide wheels and is symmetrically connected to two transition wheels via bearings, with the bottom surfaces of each transition wheel uniformly backed and in contact with each other.

[0011] Preferably, a finger cylinder is mounted on the top surface of the workbench via a fixing bracket. The piston of the finger cylinder is symmetrically fixedly connected to two clamping plates, which are located above the film and below the backing, respectively. A positioning frame is fixedly connected to the top surface of the workbench. The end of the clamping plate away from the finger cylinder is inserted into the positioning frame and slidably connected to the positioning frame via a slider.

[0012] Preferably, the tensioning mechanism includes a second bracket fixedly connected to the top surface of the workbench by bolts. The second bracket has two symmetrically opened slide grooves inside. A positioning slider is slidably connected inside each slide groove. A first spring is provided inside the slide groove. The two ends of the first spring are fixedly connected to the positioning slider and the second bracket, respectively. A pressure wheel is provided between the two positioning sliders. The two ends of the pressure wheel are rotatably connected to the two positioning sliders, respectively.

[0013] Preferably, the slide is inclined and the slide is lower toward the anti-wrinkle pressing component.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model, by setting up a symmetrically installed vacuum machine and air-concentrating nozzle, can quickly remove the air between the film and the backing before pressing, preventing air bubbles caused by residual gas. Combined with the symmetrical rubber strip design, it not only ensures concentrated suction but also prevents the film and the backing from shifting during the air extraction process, ensuring a smooth appearance and uniform adhesion of the plaster after pressing.

[0016] 2. This utility model uses a pressing and anti-wrinkle component that works in conjunction with an electric push rod and a small cylinder. Before pressing, the backing and film are partially raised and flattened by the top plate, and then uniform pressure is applied for pressing, which significantly reduces wrinkles caused by material relaxation or uneven tension.

[0017] 3. This invention utilizes a finger cylinder and clamping plate to collaboratively hold the film and backing, along with a tensioning mechanism involving an inclined slide and spring pressure. This effectively adjusts the local tension of the material during the pressing process and mitigates changes in traction force through the adaptive displacement of the pressure roller during plaster recirculation, preventing the backing from tearing. This system allows for fine-tuning and positioning of the material without affecting the continuous operation of the drive mechanism, significantly improving production efficiency and equipment stability. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the rubber strip and air-concentrating nozzle structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the top plate and transition wheel structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the positioning slider and pressure wheel structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the positioning frame and clamping plate structure of this utility model.

[0023] In the diagram: 1. Workbench; 2. Outlet film assembly; 3. First support; 4. Small cylinder; 5. Top plate; 6. Fixing plate; 7. Electric push rod; 8. Pressing plate; 9. Positioning wheel; 10. Positioning frame; 11. Second support; 12. Positioning slider; 13. First spring; 14. Pressure wheel; 15. Drive mechanism; 16. Slide groove; 17. Transition wheel; 18. Finger cylinder; 19. Clamping plate; 20. Rubber strip; 21. Vacuum machine; 22. Concentrating nozzle. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-5This utility model provides a pressing device for plaster processing and production, including a workbench 1 and a discharge roll film assembly 2 disposed on the top surface of the workbench 1. The top surface of the workbench 1 is provided with an air extraction assembly for removing air bubbles. The surface of the workbench 1 is provided with a pressing and anti-wrinkle assembly for making the plaster film flat. The top surface of the workbench 1 is provided with a tensioning mechanism to prevent the backing from being torn. A drive mechanism 15 is provided on one side of the tensioning mechanism.

[0026] The air extraction assembly includes two vacuum units 21 symmetrically installed on the top surface of the workbench 1. The air inlet ends of each vacuum unit 21 correspond to each other, and each vacuum unit 21 is equipped with a concentrator nozzle 22 at its air inlet end. The concentrator nozzle 22 is located between the film and the backing. The corresponding ports of the two concentrator nozzles 22 are symmetrically connected with two rubber strips 20. The two rubber strips 20 located on the same side are respectively attached to the bottom surface of the film and the top surface of the backing.

[0027] When the plaster needs to be pressed, the free end of the backing is first placed between the two pressure rollers inside the drive mechanism 15. The motor inside the drive mechanism 15 drives the pressure rollers to rotate, so that the backing can be stretched and moved. Then, the film roll is placed on the top of the placement rack inside the discharge roll assembly 2. The free end of the film roll is then placed between the two pressure rollers inside the drive mechanism 15. The motor inside the drive mechanism 15 drives the pressure rollers to rotate, so that the film and the backing move synchronously. When the backing is pulled, the plaster is quantitatively discharged onto the top surface of the backing through the external discharge nozzle.

[0028] Before the plaster needs to be pressed together, connect the two vacuum machines 21 to an external power source and start them. The air between the backing and the coating is absorbed by the vacuum machine 21 through the air-collecting nozzle 22, thereby bringing the coating and the backing closer together and preventing air bubbles from forming when the coating and the backing are pressed together.

[0029] When the film and backing come close to each other, they will squeeze the two rubber strips 20 set on the upper and lower sides, causing the two rubber strips 20 to tilt towards each other, thereby preventing the suction of the vacuum machine 21 from sucking the film and backing off when they are attached to each other.

[0030] It should be noted that the film dispensing assembly includes a plaster dispensing nozzle, a film roll placement rack, an extension roller, and a connecting frame, which can realize the functions of dispensing backing and placing film rolls.

[0031] It should be noted that the drive mechanism 15 consists of a motor, a positioning frame, pressure rollers, springs and screws. The motor drives the pressed plaster to move through the two pressure rollers.

[0032] In this utility model, the anti-wrinkle pressing assembly includes a first bracket 3 fixedly connected to the top surface of the workbench 1 by bolts. A fixing plate 6 is fixedly connected to the top surface of the first bracket 3 by bolts. An electric push rod 7 is installed on the top surface of the fixing plate 6. The push rod of the electric push rod 7 passes through the surface of the fixing plate 6 and is fixedly connected to a pressing plate 8. The pressing plate 8 is located above the film. A small cylinder 4 is installed on the top surface of the workbench 1. The small cylinder 4 is located directly below the electric push rod 7 and is on the same axis as the electric push rod 7. The piston of the small cylinder 4 is fixedly connected to a top plate 5, and the top plate 5 is located below the backing. Two sets of guide wheels are symmetrically rotatably connected inside the first bracket 3. Each set of guide wheels consists of two positioning wheels 9 symmetrically arranged above and below. The film and the backing are located between each set of guide wheels.

[0033] When it is necessary to press the laminated film and backing together, in order to avoid wrinkles in the film during pressing, the small cylinder 4 is first connected to an external air pump and then started. The small cylinder 4 will lift the backing and film through the top plate 5, and the top plate 5 will make the backing and film bulge, thereby flattening the film and backing. Then, the electric push rod 7 is connected to an external power source and started, so that the pressing plate 8 presses on the top surface of the film. Through the pressure of the pressing plate 8 and the top plate 5, the film and backing are pressed together, thereby preventing wrinkles from appearing during pressing.

[0034] When the laminating film and the backing material need to be pulled at the same time, they pass through two sets of guide rollers and are aligned by the two sets of guide rollers.

[0035] It should be noted that the electric push rod 7 can be used with a magnetic switch, proximity switch or photoelectric switch to achieve precise control of the push rod's extension and retraction displacement. Those skilled in the art can set it according to actual needs, which will not be elaborated here.

[0036] In this utility model, the top plate 5 is located on both sides of the two sets of guide wheels and is symmetrically connected to two transition wheels 17 by bearings. The bottom surfaces of each transition wheel 17 are uniformly backed and fit together.

[0037] When the top plate 5 lifts the backing, the transition wheel 17 will fit against the bottom surface of the backing, thus preventing the edge of the top plate 5 from scratching the bottom surface of the backing.

[0038] In this invention, a finger cylinder 18 is mounted on the top surface of the workbench 1 via a fixed bracket. The piston of the finger cylinder 18 is symmetrically fixedly connected to two clamping plates 19, which are located above the film and below the backing, respectively. A positioning frame 10 is fixedly connected to the top surface of the workbench 1. The end of the clamping plate 19 away from the finger cylinder 18 is inserted into the interior of the positioning frame 10 and slidably connected to the positioning frame 10 via a slider. The tensioning mechanism includes a second bracket 11 fixedly connected to the top surface of the workbench 1 by bolts. Two sliding grooves 16 are symmetrically opened inside the second bracket 11. A positioning slider 12 is slidably connected inside each sliding groove 16. A first spring 13 is provided inside the sliding groove 16. The two ends of the first spring 13 are fixedly connected to the positioning slider 12 and the second bracket 11, respectively. A pressure wheel 14 is provided between the two positioning sliders 12. The two ends of the pressure wheel 14 are rotatably connected to the two positioning sliders 12, respectively. The sliding groove 16 is inclined and lower towards the anti-wrinkle pressing component.

[0039] Before lifting the backing, the finger cylinder 18 is connected to an external air pump and then started. The finger cylinder 18 will drive the two clamping plates 19 to move closer to each other, thereby clamping the film and the backing. Then the backing is lifted, so that only the pressed plaster will move back. Because the position of the plaster core and the pressing plate 8 are not on the same axis before lifting, the plaster core and the pressing plate 8 are on the same axis when the plaster flows back. When the plaster flows back, the pressure roller 14 will be forced to slide inside the slide groove 16 through the positioning slider 12, and the first spring 13 will be compressed, so that the operation of the drive mechanism 15 will not be affected when the plaster flows back.

[0040] It should be noted that in this application, the small cylinder 4 and the finger cylinder 18 are power actuators that convert the pressure energy of compressed air into mechanical energy. By controlling the gas in and out, they drive the piston to perform linear reciprocating motion. They can be used in conjunction with magnetic switches, proximity switches or photoelectric switches to achieve precise control of the extension and retraction displacement of the cylinder piston rod. Those skilled in the art can set them according to actual needs, which will not be elaborated here.

[0041] The use of this utility model involves the following steps:

[0042] S1: Before pressing the plaster together, connect the two vacuum machines 21 to an external power source and start them. The air between the backing and the film is absorbed by the vacuum machine 21 through the air-collecting nozzle 22, so that the film and the backing come closer to each other, thereby avoiding air bubbles when the film and the backing are pressed together.

[0043] S2: When it is necessary to press the laminated film and backing together, in order to avoid wrinkles in the film during pressing, first connect the small cylinder 4 to the external air pump and start it. The small cylinder 4 will lift the backing and film through the top plate 5, and the backing and film will bulge through the top plate 5, thereby flattening the film and backing. Then connect the electric push rod 7 to the external power supply and start it, so that the pressing plate 8 presses on the top surface of the film. Through the pressure of the pressing plate 8 and the top plate 5, the film and backing are pressed together, thereby preventing wrinkles from appearing during pressing.

[0044] S3: When the top plate 5 lifts the backing, the transition wheel 17 will fit against the bottom surface of the backing, thus preventing the edge of the top plate 5 from scratching the bottom surface of the backing.

[0045] S4: Before lifting the backing, connect the finger cylinder 18 to the external air pump and start it. The finger cylinder 18 will drive the two clamping plates 19 to move closer to each other, thereby clamping the film and the backing. Then lift the backing, so that only the pressed plaster will move back. Because the position of the plaster core and the pressing plate 8 are not on the same axis before lifting, the plaster core and the pressing plate 8 are on the same axis when the plaster flows back. When the plaster flows back, the pressure roller 14 will be forced to slide inside the slide groove 16 through the positioning slider 12, and the first spring 13 will be compressed, so that the operation of the drive mechanism 15 will not be affected when the plaster flows back.

[0046] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0047] The electronic components and modules used in this utility model can all be parts that are commonly used in the market and can achieve the specific functions in this case. The specific models and sizes can be selected and adjusted according to actual needs.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pressing device for processing and producing plasters, comprising a worktable (1) and a discharge film assembly (2) disposed on the top surface of the worktable (1), characterized in that: The top surface of the workbench (1) is provided with an air extraction component for removing air bubbles, the surface of the workbench (1) is provided with a pressing and anti-wrinkle component for making the plaster film flat, the top surface of the workbench (1) is provided with a tensioning mechanism to prevent the backing from being torn, and a drive mechanism (15) is provided on one side of the tensioning mechanism. The air extraction assembly includes two vacuum units (21) symmetrically installed on the top surface of the workbench (1). The air inlet of each vacuum unit (21) corresponds to each other, and each vacuum unit (21) is equipped with a concentrator nozzle (22) at its air inlet. The concentrator nozzle (22) is located between the film and the backing.

2. The pressing device for processing and producing plasters according to claim 1, characterized in that: Two rubber strips (20) are fixedly connected to the corresponding ports of the two air nozzles (22) symmetrically. The two rubber strips (20) located on the same side are respectively attached to the bottom surface of the film and the top surface of the backing.

3. The pressing device for processing and producing plasters according to claim 1, characterized in that: The anti-wrinkle pressing assembly includes a first bracket (3) fixedly connected to the top surface of the workbench (1) by bolts. A fixing plate (6) is fixedly connected to the top surface of the first bracket (3) by bolts. An electric push rod (7) is installed on the top surface of the fixing plate (6). The push rod of the electric push rod (7) passes through the surface of the fixing plate (6) and is fixedly connected to a pressing plate (8). The pressing plate (8) is located above the film. A small cylinder (4) is installed on the top surface of the workbench (1). The small cylinder (4) is located directly below the electric push rod (7) and is on the same axis as the electric push rod (7). The piston of the small cylinder (4) is fixedly connected to a top plate (5), and the top plate (5) is located below the backing.

4. The pressing device for processing and producing plasters according to claim 3, characterized in that: The first bracket (3) has two sets of guide wheels symmetrically rotated inside. Each set of guide wheels consists of two positioning wheels (9) symmetrically arranged above and below, and the film and backing are located between each set of guide wheels.

5. The pressing device for processing and producing plasters according to claim 3, characterized in that: The top plate (5) is located on both sides of the two sets of guide wheels and is symmetrically connected to two transition wheels (17) by bearings. The bottom surfaces of each transition wheel (17) are uniformly backed and fit together.

6. The pressing device for processing and producing plasters according to claim 1, characterized in that: A finger cylinder (18) is mounted on the top surface of the workbench (1) via a fixing bracket. The piston of the finger cylinder (18) is symmetrically fixedly connected to two clamping plates (19). The two clamping plates (19) are located above the film and below the backing, respectively. A positioning frame (10) is fixedly connected to the top surface of the workbench (1). The end of the clamping plate (19) away from the finger cylinder (18) is inserted into the interior of the positioning frame (10) and is slidably connected to the positioning frame (10) via a slider.

7. The pressing device for processing and producing plasters according to claim 1, characterized in that: The tensioning mechanism includes a second bracket (11) fixedly connected to the top surface of the workbench (1) by bolts. The second bracket (11) has two symmetrically opened slide grooves (16) inside. Each slide groove (16) is slidably connected to a positioning slider (12). A first spring (13) is provided inside the slide groove (16). The two ends of the first spring (13) are fixedly connected to the positioning slider (12) and the second bracket (11) respectively. A pressure wheel (14) is provided between the two positioning sliders (12). The two ends of the pressure wheel (14) are rotatably connected to the two positioning sliders (12) respectively.

8. The pressing device for processing and producing plasters according to claim 7, characterized in that: The groove (16) is inclined and the groove (16) is lower in the direction toward the pressing anti-wrinkle component.

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