A plastic sheet material fall device

Abstract

The utility model relates to a kind of plastic sheet material discharging device of vertical drop, including rack, driving mechanism, press-down mechanism, driving roller, driven roller and clamping mechanism, the rack is composed of bottom plate, door frame and baffle, door frame is fixedly connected in bottom plate one end, baffle has two and is symmetrically fixedly connected in bottom plate two sides, two baffle one end is connected with the two sides of door frame respectively, driving mechanism is installed in door frame side, press-down mechanism is installed in door frame top, driving roller is rotatably connected in door frame, the output end of driving mechanism is connected with driving roller transmission, driven roller is rotatably connected in press-down mechanism lower end, driven roller can be downwardly abut driving roller, clamping mechanism has two and is respectively installed in two baffle. The utility model reduces system programming, coordination difficulty, also saves a lot of operation and maintenance working hours.

Description

Technical Field

[0001] This utility model relates to the field of roll sheet feeding technology, specifically to a drop-type plastic sheet feeding device. Background Technology

[0002] A feeding rack is typically installed at the front end of a blister tray production line to unwind rolls of plastic sheeting. After passing through guide rollers and a feeding device, the unwinding material is supplied to the blister forming unit. The feeding rack in this production line is semi-automatic, requiring manual installation of the rolls of plastic sheeting. A torque motor then unwinds the material, with encoders and frequency converters controlling the unwinding speed. This process is challenging to operate, requires additional personnel, and necessitates regular maintenance, making it time-consuming, labor-intensive, and increasing production costs. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a drop-type plastic sheet feeding device, which reduces the difficulty of system programming and coordination, and saves a lot of operation and maintenance time.

[0004] The technical solution of this utility model is as follows: a drop-type plastic sheet feeding device, including a frame, a drive mechanism, a pressing mechanism, a drive roller, a driven roller, and a clamping mechanism. The frame consists of a base plate, a door frame, and baffles. The door frame is fixedly connected to one end of the base plate. There are two baffles that are symmetrically fixedly connected to both sides of the base plate. One end of each baffle is connected to one side of the door frame. The drive mechanism is installed on the side of the door frame. The pressing mechanism is installed on the top of the door frame. The drive roller is rotatably connected to the door frame. The output end of the drive mechanism is connected to the drive roller. The driven roller is rotatably connected to the lower end of the pressing mechanism and can abut against the drive roller downwards. There are two clamping mechanisms that are respectively installed on the two baffles.

[0005] Furthermore, the baffle has a notch.

[0006] Furthermore, the end of the baffle away from the door frame is provided with a ramp.

[0007] Furthermore, the slope is provided with an upward-opening groove.

[0008] Furthermore, the upper end of the baffle at the top of the slope is provided with an arched limiting structure.

[0009] Furthermore, the pressing mechanism includes a cylinder and a lifting frame. The cylinder is installed on the top of the door frame, and the output end of the cylinder passes downward through the door frame and is connected to the lifting frame. The opening of the lifting frame faces downward, and the driven roller is rotatably connected to the lifting frame.

[0010] Furthermore, the door frame is provided with a guide hole, and the upper end of the lifting frame is provided with a guide post, which is slidably connected to the guide hole.

[0011] Furthermore, the clamping mechanism includes a locking frame and a pin. The locking frame is mounted on the baffle, with an opening at one end and a socket at the upper end of the locking block. The pin can be inserted into the socket, and the pin and the locking frame form an openable and closable area.

[0012] Furthermore, the upper end of the baffle is provided with a sliding groove, and a lead screw is rotatably connected in the sliding groove. One end of the lead screw protrudes outside the door frame, and the lower end of the lock frame is provided with a transverse threaded hole. The lock frame is connected to the lead screw through the threaded hole and is slidably connected in the sliding groove.

[0013] Furthermore, a knob is provided at one end of the lead screw.

[0014] Furthermore, it also includes supports and support rollers. There are two supports, which are fixedly connected to both sides of the door frame respectively. The support roller is rotatably connected between the two supports and is located outside the drive roller.

[0015] Furthermore, it also includes a bracket and a position sensor. The bracket is mounted on the base plate, and the position sensor is mounted on the bracket. The position sensor is located below the support roller and faces outward from the door frame.

[0016] Compared with the prior art, the advantages of this utility model are: the active feeding device is removed, and there is no need to link with the feeding device through torque motor, encoder and frequency converter, etc. Instead, the material is fed by passive feeding, which saves a lot of parts, has a simple structure, and can be deleted from the system, which reduces the difficulty of system programming and coordination, and saves a lot of operation and maintenance time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a structural schematic diagram of the present invention from another angle.

[0020] The components are as follows: 1. Base plate; 2. Door frame; 3. Baffle; 301. Slope; 302. Groove; 303. Limiting structure; 304. Sliding groove; 305. Notch; 4. Drive mechanism; 5. Active roller; 6. Cylinder; 7. Lifting frame; 8. Guide column; 9. Driven roller; 10. Support; 11. Support roller; 12. Locking frame; 13. Pin; 14. Bracket; 15. Position sensor. Detailed Implementation

[0021] To further illustrate the technical means and effects of this utility model in achieving its intended purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0022] like Figure 1-2 As shown, a drop-type plastic sheet feeding device includes a frame, a drive mechanism 4, a pressing mechanism, a drive roller 5, a driven roller 9, and a clamping mechanism. The frame consists of a base plate 1, a door frame 2, and baffles 3. The door frame 2 is fixedly connected to one end of the base plate 1. There are two baffles 3, which are symmetrically fixedly connected to both sides of the base plate 1. One end of each baffle 3 is connected to one side of the door frame 2. The drive mechanism 4 is installed on the side of the door frame 2, the pressing mechanism is installed on the top of the door frame 2, the drive roller 5 is rotatably connected to the door frame 2, and the output end of the drive mechanism 4 is drively connected to the drive roller 5. The driven roller 9 is rotatably connected to the lower end of the pressing mechanism. The driven roller 9 can abut downwards against the driving roller 5. There are two clamping mechanisms, each mounted on a baffle 3. The center of the roll of plastic sheet to be unwound is a drum. After the unwinding roller passes through the drum, it is lifted onto the baffle 3 by both ends of the unwinding roller and locked by the clamping mechanism. The drum can be directly mounted on the unwinding roller for rotation, or it can be clamped from both ends by rotating blocks with bearings for rotation. The unwinding roller itself does not rotate; it only serves to support and provide a sliding connection for the drum during rotation. After the roll of plastic sheet is unwound, it passes between the driving roller 5 and the driven roller 9 and is fed into the downstream production line feed device. Under the clamping of the rollers, the rolled plastic sheet rotates and is fed out. After the driven roller 9 releases the driven roller 5, the inertia of the rolled plastic sheet will cause it to continue rotating at a certain angle and release more plastic sheet. The released plastic sheet hangs freely between the baffles 3. Under the clamping and conveying of the driven roller 5 and the driven roller 9, it also forms a free-hanging state between itself and the production line feeding device, providing two-stage material storage functions for the feeding and processing of plastic sheet in the production line. At the same time, when the feeding device conveys the plastic sheet, since the roll and the rolled plastic sheet are not fed by a motor or other mechanism, The device feeds the material, so the mechanism formed by the active roller 5 and the driven roller 9, as well as the feeding device of the production line, do not need to overcome or can easily overcome the resistance of relative sliding between the roll and the feeding roller, and easily pull out the roll of plastic sheet. Compared with the prior art, this application removes the active feeding device, and does not need to be linked with the feeding device through torque motor, encoder and frequency converter, but feeds the material by passive feeding, which saves a lot of parts, has a simple structure, and can be deleted in the system, which reduces the difficulty of system programming and coordination, and saves a lot of operation and maintenance time.

[0023] In the above embodiment, the baffle 3 has a notch 305, through which the feeding and storage status of the hanging plastic sheet between the baffles 3 can be observed from the outside, allowing for timely adjustment or replacement of the roll. The end of the baffle 3 away from the door frame 2 has a ramp 301. When the feeding roller, after passing through the roll, is to be lifted to the upper part of the baffle 3, it can be pushed upwards along the ramp 301, which is convenient and effortless, avoiding situations where the plastic sheet scratches the arm or the feeding roller crushes the finger when lifted directly. The ramp 301 has an upward-opening groove 302, which provides temporary fixation for the feeding roller. After passing through the roll, the feeding roller can be pushed along the ramp 301 and fall into the groove 302, ensuring that the rolled plastic sheet does not roll off the base plate 1 and cause injury, while also providing material for the device. The baffle 3 at the top of the ramp 301 is provided with an arched limiting structure 303. After the feeding roller carries the rolled plastic sheet up the ramp 301, it passes the limiting structure 303 at the top of the ramp 301. The limiting structure 303 provides a backstop function to prevent the feeding roller from rolling off the baffle 3 and causing the rolled plastic sheet to hit and injure people.

[0024] The pressing mechanism includes a cylinder 6 and a lifting frame 7. The cylinder 6 is mounted on the top of the door frame 2, and its output end passes downward through the door frame 2 and connects to the lifting frame 7. The lifting frame 7 has an opening facing downward, and a driven roller 9 is rotatably connected to the lifting frame 7. When it is necessary to convey plastic sheets, the cylinder 6 pushes the lifting frame 7 downward, causing the driven roller 9 to press the plastic sheet onto the driving roller 5, and the drive mechanism 4 provides feeding. The door frame 2 is provided with a guide hole, and the upper end of the lifting frame 7 is provided with a guide post 8. The guide post 8 is slidably connected to the guide hole, providing lifting guidance for the lifting frame 7 and providing auxiliary force support to prevent damage to the output end of the cylinder 6.

[0025] The clamping mechanism includes a locking frame 12 and a pin 13. The locking frame 12 is mounted on the baffle 3. One end of the locking frame 12 has an opening, and the upper end of the locking block has a insertion hole. The pin 13 can be inserted into the insertion hole. The pin 13 and the locking frame 12 form an openable and closable area, which allows the feeding roller to enter and exit. The width of the openable and closable area is slightly larger than the diameter of the feeding roller, which can effectively prevent the feeding roller from moving randomly and also provide sufficient space for the feeding roller.

[0026] The upper end of the baffle 3 is provided with a sliding groove 304, and a lead screw is rotatably connected in the sliding groove 304. One end of the lead screw protrudes outside the door frame 2. The lower end of the lock frame 12 is provided with a transverse threaded hole. The lock frame 12 is connected to the lead screw through the threaded hole and is slidably connected in the sliding groove 304. By rotating the lead screw, the position of the lock frame 12 on the baffle 3 can be adjusted, thereby adjusting the distance between the rolled plastic sheet and the driving roller 5 and driven roller 9, and thus adjusting the total length of the freely hanging plastic sheet to ensure that it corresponds to the single feed amount of the production line feeding device. A knob is provided at one end of the lead screw to facilitate rotation of the lead screw to adjust the position of the lock frame 12.

[0027] The device also includes a support 10, a support roller 11, a bracket 14, and a position sensor 15. There are two supports 10, which are fixedly connected to both sides of the door frame 2. The support roller 11 is rotatably connected between the two supports 10. The support roller 11 is located outside the drive roller 5. The support roller 11 provides support for the plastic sheet. Combined with the drive roller 5, it can make the plastic sheet of this section lie flat on the drive roller 5 and the support roller 11. It can also prevent the plastic sheet from arching in the middle when supported by the drive roller 5 alone, ensuring the smooth clamping and feeding of the material by the drive roller 5 and the driven roller 9. The bracket 14 is installed on the base plate 1, and the position sensor 15 is installed on the bracket 14. The position sensor 15 is located below the support roller 11 and faces the outside of the door frame 2. The position sensor 15 is used to detect the state of the plastic sheet between the support roller 11 and the production line feeding device. If the plastic sheet droops and triggers the position sensor 15, the drive mechanism 4 is controlled to stop driving, the cylinder 6 is retracted upward, and the production line feeding device can feed and pick up the material.

[0028] Description of the working principle of this utility model:

[0029] Two feeding rollers pass through the middle of two rolls of plastic sheet, forming two sets of free feeding structures. One set is pushed up the baffle 3 along the ramp 301 and locked by the openable / closable area formed by the locking frame 12 and the pin 13. The other set is pushed down along the ramp 301 into the groove 302 to provide material for the device. The roll of plastic sheet is pulled out and passed between the driving roller 5 and the driven roller 9. With the assistance of the support roller 11, it enters the feeding device at the rear of the production line. The roll of plastic sheet is manually rotated so that the plastic sheet at the front and rear ends of the driving roller 5 and the driven roller 9 hangs naturally. After the plastic sheet triggers the position sensor 15, the entire device can start operating. Under the conveying action of the production line feeding device, the plastic sheet that hangs naturally between the support roller 11 and the feeding device is rolled up and the position sensor 15 loses its signal. After the feeding device stops conveying, the drive mechanism 4 drives the active roller 5 to rotate, and at the same time the cylinder 6 pushes the driven roller 9 to press the plastic sheet onto the active roller 5, realizing the feeding of the plastic sheet until the plastic sheet that hangs naturally between the support roller 11 and the feeding device triggers the position sensor 15, the drive mechanism 4 stops and the cylinder 6 resets; during this process, when the active roller 5 and the driven roller 9 clamp and convey the plastic sheet, the rolled plastic sheet is passively unloaded. When the active roller 5 and the driven roller 9 remove their grip on the plastic sheet... After being clamped, the rolled plastic sheet slowly rotates and comes to a stop under inertial tendency. The plastic sheet hangs naturally between the clamping mechanism and the driving roller 5 and driven roller 9, storing a sufficient length of plastic sheet for the production line. Under the action of the friction of the driving roller 5 and support roller 11, the plastic sheet will not slip off the driving roller 5 and support roller 11. In order to enable the device to convey the plastic sheet more accurately and temporarily receive it more reliably, anti-slip layers, such as wrapping transparent film, can be arranged on the driving roller 5, driven roller 9 and support roller 11 to further enhance the friction provided by the driving roller 5, driven roller 9 and support roller 11 to the plastic sheet.

[0030] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A drop-type plastic sheet feeding device, comprising a frame, a drive mechanism, a pressing mechanism, a drive roller, a driven roller, and a clamping mechanism, characterized in that: The frame consists of a base plate, a door frame, and baffles. The door frame is fixedly connected to one end of the base plate. There are two baffles that are symmetrically fixedly connected to both sides of the base plate. One end of each baffle is connected to one side of the door frame. The drive mechanism is installed on the side of the door frame, and the pressing mechanism is installed on the top of the door frame. The drive roller is rotatably connected to the door frame. The output end of the drive mechanism is connected to the drive roller. The driven roller is rotatably connected to the lower end of the pressing mechanism. The driven roller can press down against the drive roller. There are two clamping mechanisms that are respectively installed on the two baffles.

2. The drop-type plastic sheet feeding device according to claim 1, characterized in that: The baffle has a notch.

3. The drop-type plastic sheet feeding device according to claim 1, characterized in that: The baffle is provided with a ramp at the end away from the door frame.

4. The drop-type plastic sheet feeding device according to claim 3, characterized in that: The slope has an upward-opening groove.

5. The drop-type plastic sheet feeding device according to claim 3 or 4, characterized in that: The upper end of the baffle at the top of the slope is provided with an arched limiting structure.

6. The drop-type plastic sheet feeding device according to claim 1, characterized in that: The pressing mechanism includes a cylinder and a lifting frame. The cylinder is installed on the top of the door frame. The output end of the cylinder passes downward through the door frame and is connected to the lifting frame. The opening of the lifting frame faces downward. The driven roller is rotatably connected to the lifting frame. The door frame is provided with a guide hole. The upper end of the lifting frame is provided with a guide post. The guide post is slidably connected to the guide hole.

7. The drop-type plastic sheet feeding device according to claim 1, characterized in that: The clamping mechanism includes a lock frame and a pin. The lock frame is mounted on a baffle plate. One end of the lock frame has an opening, and the upper end of the lock block has a socket. The pin can be inserted into the socket, and the pin and the lock frame form an openable and closable area.

8. The drop-type plastic sheet feeding device according to claim 7, characterized in that: The upper end of the baffle is provided with a sliding groove, and a lead screw is rotatably connected in the sliding groove. One end of the lead screw protrudes outside the door frame. The lower end of the lock frame is provided with a horizontal threaded hole. The lock frame is connected to the lead screw through the threaded hole and is slidably connected in the sliding groove. One end of the lead screw is provided with a knob.

9. The drop-type plastic sheet feeding device according to claim 1, characterized in that: It also includes supports and support rollers. There are two supports, which are fixedly connected to both sides of the door frame. The support roller is rotatably connected between the two supports and is located outside the drive roller.

10. The drop-type plastic sheet feeding device according to claim 9, characterized in that: It also includes a bracket and a position sensor. The bracket is mounted on the base plate, and the position sensor is mounted on the bracket. The position sensor is located below the support roller and faces outward from the door frame.

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