Non-stop waste collecting mechanism

Abstract

The utility model provides a non-stop waste material collecting mechanism for a supporting box forming procedure of a medicine packaging machine. The non-stop waste material collecting mechanism comprises a rack, a traction assembly, a transmission roller, a lifting roller assembly and double winding drums (the two winding drums are driven by independent winding motors), and the traction assembly, the transmission roller, the lifting roller assembly and the double winding drums are sequentially arranged. A lifting roller assembly is matched with a sliding seat through a vertical guide rod, and when the sliding seat moves downwards to trigger an inductive switch, a controller starts a winding motor to operate intermittently (the winding speed is larger than the waste generation speed), so that a lifting roller ascends and continuously stores materials; after the winding motor is powered off, the lifting roller moves downwards to trigger the switch again, and continuous winding is achieved circularly. During roll replacement, the traction assembly temporarily drags waste to be accumulated, after a worker switches the winding drum, another winding motor takes over to conduct winding, and roll replacement can be completed without shutdown. The problems that traditional shutdown roll changing efficiency is low, and materials are wasted or stacked due to the fact that the rolling speed is not matched are solved, and production efficiency is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of pharmaceutical packaging machine technology, specifically to a non-stop waste collection mechanism for recycling waste materials in the tray forming process of a pharmaceutical packaging machine. Background Technology

[0002] During the tray forming and feeding process of pharmaceutical packaging machines, waste materials (such as scraps) are generated after the plastic film rolls are heated, cut, and pressed into shape. Existing solutions typically use a single take-up drum to collect the waste, driven directly by a motor. However, this method has two major drawbacks: First, once the take-up drum is full of waste, the machine must be stopped to unload and a new drum replaced, causing production line stagnation. Restarting requires recalibrating parameters and adjusting the equipment, severely impacting production efficiency. Second, when the take-up drum is driven by a motor, its rotation speed must be precisely matched to the waste generation speed—if the speed is too high, the take-up drum will drag the roll, resulting in an excessively long gap between the feed openings after pressing and unloading (material waste); if the speed is too low, waste will accumulate on the equipment, also affecting normal production. Therefore, there is an urgent need for a mechanism that can continuously collect waste without stopping the machine and supports rapid roll changes to improve production efficiency. Utility Model Content

[0003] To overcome the problems of production line stagnation caused by winding drum shutdown for roll change, and material waste or waste accumulation caused by mismatch between winding speed and waste generation speed in the existing technology, a mechanism is provided that can continuously wind up waste without stopping the machine and supports seamless roll change, thereby improving production efficiency.

[0004] To achieve the above objectives, the present invention provides the following technical solution: The non-stop waste collection mechanism of the present invention includes a frame, the core feature of which is that: a traction component, several transmission rollers, a lifting roller component and a double take-up drum are sequentially arranged on the frame (the two take-up drums are respectively installed on their respective take-up rollers, and the two take-up rollers are independently driven by their respective take-up motors).

[0005] Traction assembly: includes a base, traction roller, and pressure roller; a cylinder and a traction motor are mounted on the base. The piston rod of the cylinder drives the pressure roller to move up and down (contacting or separating from the traction roller). The traction roller is rotatably mounted on the base, and the output shaft of the traction motor is connected to the traction roller. This assembly is used to temporarily traction waste material during roll changes to prevent the waste material from becoming loose.

[0006] Conveyor rollers: Several conveyor rollers are used to guide the waste material transport path.

[0007] The lifting roller assembly includes an upper connecting plate, a lower connecting plate, a vertical guide rod, a slide block, and a lifting roller. The vertical guide rod is fixed between the upper and lower connecting plates, and the slide block is slidably fitted onto the vertical guide rod. Conduction rollers are located on both sides of the upper connecting plate (waste material enters from the left conduction roller of the upper connecting plate, passes through the lifting roller, and exits from the right conduction roller). An inductive switch is located on the lower connecting plate, and the inductive switch is electrically connected to the winding motor via a controller. The lifting roller slides up and down along the vertical guide rod via the slide block, and its position change is fed back to the controller via the inductive switch on the lower connecting plate. When the slide block moves down to the lower connecting plate, the inductive switch is triggered, and the controller starts the winding motor to run for a period of time (winding speed > waste material generation speed), causing the lifting roller to rise under winding traction. After the winding motor is de-energized, the lifting roller moves down due to waste material accumulation and triggers the inductive switch again. This cycle repeats to ensure continuous and stable waste material winding.

[0008] Dual take-up drums: The two take-up drums are driven by independent take-up motors, which control the corresponding take-up rollers to achieve the alternating use of the two take-up drums. This way, when one take-up drum is about to be full, a seamless roll change can be achieved by switching to the other take-up drum.

[0009] Roll changing process: When any take-up drum is full, the cylinder is activated to make the pressure roller contact the traction roller, pulling the waste material to accumulate behind the traction assembly; the worker cuts off the waste material on the original take-up drum and winds it onto the new take-up drum. At this time, the lifting roller has been triggered by the aforementioned cycle induction switch and driven by another take-up motor to take up the roll. After the lifting roller rises to a certain height, it stops, thus completing the roll changing without stopping the machine.

[0010] The beneficial effects of this utility model are: the continuous winding of waste material is achieved through the dynamic feedback of the lifting roller assembly (induction switch + controller to control the intermittent operation of the winding motor) to match the waste material generation speed, avoiding material waste or waste material accumulation caused by mismatch in winding speed; the dual winding drums, together with the temporary traction function of the traction assembly, support the rapid switching of winding drums without stopping the machine, eliminating the production stagnation and parameter readjustment problems caused by traditional machine stoppage for changing rolls, and significantly improving production efficiency.

[0011] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0012] Figure 1 This is a perspective view of a specific embodiment of the present utility model;

[0013] Figure 2 This is a front view structural diagram of a specific embodiment of the present invention.

[0014] Explanation of reference numerals in the attached drawings: 1-Frame; 2-Traction assembly; 21-Seat body; 22-Traction roller; 23-Pressure roller; 24-Cylinder; 3-Transmission roller; 4-Lifting roller assembly; 41-Upper connecting plate; 42-Lower connecting plate; 43-Vertical guide rod; 44-Slide seat; 45-Lifting roller; 46-Inductive switch; 5-Double take-up drums; 51-Take-up drum A; 52-Take-up drum B; 53-Take-up roller. Detailed Implementation

[0015] The present invention will be described in detail below through embodiments, which are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention.

[0016] Example: Figure 1 , Figure 2 As shown, this device is installed behind the tray forming station of the pharmaceutical packaging machine to collect the plastic film waste generated after pressing and unloading.

[0017] 1. Initial State

[0018] After the waste material is drawn out from the tray forming station, it enters the lifting roller assembly 4 sequentially via the guide roller 3 on the frame 1. The specific path is as follows: the waste material first passes through the guide roller 3 on the left side of the upper connecting plate 41 in the lifting roller assembly 4 → lifting roller 45 → and then exits via the guide roller 3 on the right side of the upper connecting plate 41. At this time, the lifting roller 45 of the lifting roller assembly 4 is initially located above the lower connecting plate 42, i.e., it has not moved down to the lower connecting plate 42. The slide 44 does not trigger the induction switch 46 on the lower connecting plate 42, and both winding motors of the double winding drum 5 are in standby mode and have not been started.

[0019] 2. Continuous winding stage

[0020] During continuous production at the tray forming station, waste material is constantly generated and transported along the guide roller 3 towards the lifting roller assembly 4. As the amount of waste material accumulates, the lifting roller 45 gradually moves downwards under the action of the slide and its own gravity, keeping the waste material taut until the slide 44 moves down to touch the inductive switch 46 on the lower connecting plate 42. At this time, the inductive switch 46 sends a start signal to the corresponding winding motor, such as winding motor A, the corresponding winding drum A51, and the winding roller 53 through the controller. After receiving the signal, the controller controls the winding motor to run for a period of time.

[0021] After the winding motor starts, it drives the corresponding winding roller 53, such as winding roller A, to rotate at a rate higher than the natural rate of waste generation, quickly winding the waste onto the corresponding winding drum, such as winding drum A51. Because the winding speed is greater than the waste generation speed, the lifting roller 45 gradually rises under the action of the winding traction force, disengaging from the induction switch 46 on the lower connecting plate 42. After the lifting roller 45 rises to a point where it no longer touches the induction switch 46 for a period of time, the controller controls the winding motor to cut off power and stop operating.

[0022] Subsequently, waste continues to be generated and accumulates again, causing the lifting roller 45 to move down and re-trigger the inductive switch 46 on the lower connecting plate 42. The controller then restarts the corresponding winding motor, repeating the above "start-wind-power-off" cycle. Through this dynamic feedback mechanism—the change in the lifting roller position → the triggering of the inductive switch → the intermittent operation of the winding motor—continuous and stable winding of waste is achieved, avoiding the problem of material waste or waste accumulation caused by excessively long intervals between the feed inlets due to a mismatch between the winding speed and the waste generation speed.

[0023] 3. Roll changing operation

[0024] When either of the two take-up drums 5, such as take-up drum A51, is about to be fully wound, a roll change operation must be performed without stopping the machine: First, start the cylinder 24 of the traction assembly 2, so that the piston rod of the cylinder 24 drives the pressure roller 23 to press down and contact the traction roller 22, thereby temporarily pulling the waste material and preventing the waste material from loosening at the rear end of the traction assembly 2.

[0025] Next, the operator cuts off the end of the waste material on the almost full take-up drum A51 and winds the cut waste material onto another empty take-up drum, such as take-up drum B52. At this time, the take-up motor corresponding to take-up drum B52 may have been in operation through the cyclic triggering of the aforementioned lifting roller 45, or may be about to be triggered and started.

[0026] Before the roll change, the lifting roller 45 has been triggered by the induction switch 46 during the continuous winding stage and driven by the corresponding winding motor, such as winding motor B, and the corresponding winding drum B52. Therefore, after the worker completes the waste material wrapping, the winding drum B52 has already started to wind up the waste material normally. After the lifting roller 45 rises to a safe height, i.e., the amount of waste material accumulation is within the normal range, the cylinder 24 is closed, causing the pressure roller 23 to separate from the traction roller 22, ending the temporary traction state.

[0027] At this point, the roll change operation is complete, and the production line can continue to operate without stopping. Furthermore, there is no need to recalibrate parameters at each station, such as traction speed and winding speed, after the roll change, which significantly improves production efficiency.

[0028] After adopting the above technical solution, the following technical effects can be achieved: the continuous winding of waste material is realized through the dynamic feedback of the lifting roller assembly (induction switch + controller to control the intermittent operation of the winding motor) to match the waste material generation speed and avoid material waste or waste material accumulation caused by mismatch in winding speed; the dual winding drums, together with the temporary traction function of the traction assembly, support the rapid switching of winding drums without stopping the machine, eliminate the production stagnation and parameter readjustment problems caused by traditional machine stoppage for changing rolls, and significantly improve production efficiency.

Claims

1. A non-stop waste collection mechanism, comprising a frame (1), characterized in that, The frame (1) is provided with a traction assembly (2), several transmission rollers (3), a lifting roller assembly (4) and a double take-up drum. The double take-up drum includes two take-up drums, each of which is installed on a corresponding take-up roller (53). The two take-up rollers (53) are driven by their respective take-up motors. The traction assembly (2) includes a base (21), a traction roller (22), and a pressure roller (23). A cylinder (24) and a traction motor are mounted on the base (21). The piston rod of the cylinder (24) drives the pressure roller (23) to move up and down to achieve contact or separation with the traction roller (22). The traction roller (22) is rotatably mounted on the base (21). The output shaft of the traction motor is connected to the traction roller (22). The lifting roller assembly (4) can control the start time of the two winding motors, driving the winding drum to wind intermittently.

2. The non-stop waste collection mechanism according to claim 1, characterized in that, The lifting roller assembly (4) includes an upper connecting plate (41), a lower connecting plate (42), a vertical guide rod (43), a slide block (44), and a lifting roller (45). The vertical guide rod (43) is vertically installed between the upper connecting plate (41) and the lower connecting plate (42). The slide block (44) is slidably sleeved on the vertical guide rod (43). Conduction rollers (3) are respectively provided on both sides of the upper connecting plate (41). Waste enters from the conduction roller (3) on the left side of the upper connecting plate (41), passes through the lifting roller (45), and exits from the conduction roller (3) on the right side of the upper connecting plate (41). A sensor switch (46) is provided on the connecting plate (42). The sensor switch (46) is electrically connected to two winding motors through a controller. When the slide (44) moves down to the lower connecting plate (42), the sensor switch (46) is triggered. The controller receives the signal and starts the corresponding winding motor to run for a period of time, so that the winding speed of the winding roller (53) is greater than the waste generation speed. The lifting roller (45) rises under the winding traction. After the winding motor is powered off for a period of time, the lifting roller (45) moves down due to the accumulation of waste and triggers the sensor switch (46) again, thus realizing the continuous winding of waste in a cycle.

3. The non-stop waste collection mechanism according to claim 2, characterized in that, The lifting roller (45) slides up and down along the vertical guide rod (43) via the slide block (44), and its position change is fed back to the controller via the induction switch (46) on the lower connecting plate (42).

4. The non-stop waste collection mechanism according to claim 1 or 2, characterized in that, When any take-up drum is full, the cylinder (24) is activated to make the pressure roller (23) contact the traction roller (22) to pull the waste material to accumulate. The worker cuts off the waste material on the full take-up roller (53) and wraps it to another take-up drum. Another take-up motor drives the corresponding take-up roller (53) to take it up, realizing roll changing without stopping the machine.

5. The non-stop waste collection mechanism according to claim 1 or 2, characterized in that, Two take-up motors operate independently, each controlling the corresponding take-up roller (53) to take up the rolls, so as to achieve the alternating use of the two take-up drums.

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