Film releasing and tensioning device of laundry condensate bead production equipment

Abstract

The utility model discloses a film releasing and tensioning device of laundry condensate bead production equipment, belongs to the technical field of winding equipment, and provides a tensioning device capable of better keeping pre-tightening force borne by a laundry condensate bead film within a suitable range. The film releasing and tensioning device comprises a rack, an upper sealing film and a lower sealing film are wound in the rack, and a winding assembly is arranged on the rack; the winding assembly comprises a pair of guide rails fixedly connected with the machine frame, a first winding drum and a second winding drum are arranged between the two guide rails and driven by a driver, and the two guide rails are further jointly connected with a tensioning roller in a sliding mode. The travel switch structures are arranged at the two ends of the tensioning roller for position reminding, and the counter weight shaft can be always in a suspended state in cooperation with the speed-adjustable winding drum, so that more constant pre-tightening force is provided for a sealing film of laundry condensate beads, the tightening force of the sealing film can be kept within a proper range for a long time, and the service life of the sealing film is prolonged. And the problem that the production is influenced due to over-loose or over-tight sealing film can be effectively avoided.

Description

Technical Field

[0001] The present application relates to the technical field of winding equipment, and in particular to a film releasing and tightening device for laundry condensate bead production equipment. Background Art

[0002] The water-soluble film needs to be in constant motion during the production process of laundry beads and must remain flat at the processing position. This requires that the rollers that retract and unreel the film remain synchronized, otherwise the film can easily be over-stretched or relaxed, thereby affecting the stability of the production process and the uniformity of the laundry beads film. In the prior art, there are also tensioning devices arranged between the retracting and unreeling rollers, but although these tensioning devices have buffering capabilities, the pre-tightened film may still be over-tightened or over-fed. Summary of the invention

[0003] The purpose of the present application is to provide a tensioning device that can better maintain the pre-tightening force on the laundry condensate film within an appropriate range.

[0004] To achieve the above objectives, the present application provides a film releasing and tightening device for a laundry bead production equipment: it includes a frame, an upper sealing film and a lower sealing film are wound inside the frame, a winding assembly is arranged on the frame, and the winding assembly includes a pair of guide rails fixedly connected to the frame, a first winding drum and a second winding drum are arranged between the two guide rails, driven by a driver, and the two guide rails are also slidably connected with a tensioning roller, the axis of the tensioning roller is parallel to the axis of the first winding drum and the second winding drum, the upper sealing film is wound around the bottom of the tensioning roller and then wound onto the first winding drum; the lower sealing film is wound around the bottom of the tensioning roller and then wound onto the second winding drum, so that the upper and lower sealing films can be subjected to the force of the tensioning roller.

[0005] Preferably, travel switches are provided at both ends of the tensioning roller, and two baffle bars respectively located above and below the tensioning roller are fixedly connected between the guide rails. When the travel switch contacts the upper baffle bar, the rotation speeds of the first winding drum and the second winding drum decrease; when the travel switch contacts the lower baffle bar, the rotation speeds of the first winding drum and the second winding drum increase, so that the tensioning roller remains suspended, thereby allowing the sealing film to be subjected to a substantially constant tensioning force.

[0006] Preferably, each side of the guide rail has a pair of ear plates, the two groups of ear plates are positioned correspondingly, one pair of corresponding ear plates are rotatably connected to the first winding drum, and the other pair of corresponding ear plates are rotatably connected to the second winding drum, and both ends are aligned and arranged in parallel.

[0007] As a preferred embodiment, the tensioning roller includes a counterweight shaft, both ends of which are rotatably connected to end shafts, the guide rail is provided with a slide groove running through the inner and outer sides, the end of the end shaft is fixedly connected to a slip ring suitable for cooperating with the slide groove to form a sliding pair, the travel switch is fixedly connected to the end shaft, and the direction of the travel switch remains unchanged, so as to prevent the tensioning roller from being in the upper limit position or the lower limit position for a long time.

[0008] Preferably, a spur plate is fixedly connected to the inner side surface of the guide rail, and the extension direction of the spur tooth surface of the spur plate is parallel to the extension direction of the slide groove. The end shaft sleeve is provided with a gear, which is rotatably connected to the spur plate. The gear is suitable for meshing with the spur plate, and the rotational inertia of the gear is used to suppress the height change of the counterweight shaft.

[0009] As a preference, the frame is provided with an injection mechanism, a hot pressing mechanism, a cutting mechanism and a conveying mechanism, the hot pressing mechanism is located between the injection mechanism and the cutting mechanism, and the conveying mechanism is located below the injection mechanism, the hot pressing mechanism and the cutting mechanism, and is used for conveying the moving mold plate.

[0010] As a preferred embodiment, the frame is rotatably connected with a first film supply cylinder and a first guide roller. The upper sealing film starts from the first film supply cylinder, bypasses several of the first guide rollers, passes through the hot pressing mechanism and between the cutting mechanism and the conveying mechanism, and then bypasses the tensioning roller to be wound up by the first winding cylinder. The upper sealing film participates in the two steps of hot pressing and punching process.

[0011] As a preference, the first film supply cylinder is driven by a servo motor and needs to actively unfold the upper sealing film, but the force of the first film supply cylinder rotating to unfold the upper sealing film is relatively small, so the upper sealing film will still be pulled and straightened.

[0012] As a preferred embodiment, a second film supply cylinder and a second guide roller are rotatably connected to the frame. The lower sealing film starts from the second film supply cylinder, bypasses several of the second guide rollers, passes through the injection mechanism, the hot pressing mechanism and the cutting mechanism and the conveying mechanism, and then bypasses the tensioning roller to be wound up by the second winding cylinder. The lower sealing film needs to go through four steps of blister forming, injection, hot pressing and punching.

[0013] Preferably, the upper surface of the lower sealing film passing around the second guide roller contacts the lower surface of the lower sealing film wrapped around the outermost layer of the second film supply cylinder, so the second film supply cylinder is easier to rotate without the need for additional driving force, only traction is needed.

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

[0015] (1) By setting travel switch structures at both ends of the tensioning roller to provide position reminders, and cooperating with the speed-adjustable winding drum, the counterweight shaft can always be in a suspended state, thereby providing a more constant pre-tightening force for the sealing film of the laundry beads, and the tensioning force of the sealing film can be permanently maintained within an appropriate range, which can effectively avoid the problem of the sealing film being too loose or too tight and affecting production;

[0016] (2) By setting a gear structure at both ends of the counterweight roller and cooperating with a fixed rack, the rotational inertia of the gear is used to suppress the height change of the tensioning roller, so that the process of position change of the tensioning roller is gentler and smoother, so that the stability and safety of the entire device during operation will be better. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a first stereoscopic schematic diagram of the general assembly structure of the film releasing and tightening device of the laundry beads production equipment;

[0018] Figure 2 A second stereoscopic schematic diagram of the general assembly structure of the film releasing and tightening device of the laundry beads production equipment;

[0019] Figure 3 It is a three-dimensional schematic diagram of the detour state of the upper and lower sealing films of the film releasing and tightening device of the laundry condensate bead production equipment;

[0020] Figure 4 It is a three-dimensional structural schematic diagram of the winding component of the film releasing and tightening device of the laundry beads production equipment;

[0021] Figure 5 This is a schematic diagram of the three-dimensional structure of the tensioning roller of the film releasing and tensioning device of the laundry beads production equipment.

[0022] In the figure: 1. frame; 2. conveying mechanism; 3. injection mechanism; 4. hot pressing mechanism; 5. cutting mechanism; 6. upper sealing film; 601. first film supply cylinder; 602. first guide roller; 7. lower sealing film; 701. second film supply cylinder; 702. second guide roller; 8. winding assembly; 810. guide rail; 811. slide groove; 812. ear plate; 802. spur plate; 803. first winding cylinder; 804. second winding cylinder; 850. tensioning roller; 851. counterweight shaft; 852. end shaft; 853. gear; 854. slip ring; 855. travel switch; 806. stop rod. DETAILED DESCRIPTION

[0023] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0024] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0025] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0026] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0027] like Figure 1-5 The film releasing and tightening device of the laundry beads production equipment shown includes a fixed frame 1, which is composed of a number of criss-cross frame plates to form a three-dimensional space for providing installation attachment for functional components. An upper sealing film 6 and a lower sealing film 7 are wound around the frame 1, which are materials for forming the outer packaging film of the laundry beads. A winding assembly 8 is provided on the frame 1, which is used to synchronously wind up the remaining waste materials of the upper sealing film 6 and the lower sealing film 7 for recycling and utilization. On the one hand, it avoids the raw materials from being scattered all over the ground, and it is more convenient to clean and recycle after winding, reducing the pollution and waste of raw materials; on the other hand, it can maintain the tension of the unused sealing film to avoid the sealing film from wrinkling due to relaxation during production.

[0028] The specific structure of the winding assembly 8 includes a pair of guide rails 810 fixedly connected to the frame 1, the two guide rails 810 are symmetrical to each other and are both in the vertical direction, a first winding drum 803 and a second winding drum 804 are arranged between the two guide rails 810, the first winding drum 803 is used to wind up the upper sealing film 6; the second winding drum 804 is used to wind up the lower sealing film 7, and each side of the guide rail 810 has a pair of ear plates 812, the two groups of ear plates 812 are in corresponding positions, the four ear plates 812 are aligned in pairs, and a pair of corresponding ear plates 812 are rotatably connected to each other The first winding drum 803 and another pair of corresponding ear plates 812 are rotatably connected to the second winding drum 804, and the two ear plates 812 connected to the same winding drum are located on different guide rails 810. The axes of the first winding drum 803 and the second winding drum 804 are parallel and usually located on the same horizontal plane. The first winding drum 803 and the second winding drum 804 are both driven by a driver, and there is a certain distance between them, which can avoid the upper sealing film 6 and the lower sealing film 7 from affecting each other during the winding process, and the larger distance can make the sealing film waste rolled thicker.

[0029] The two guide rails 810 are also slidably connected with a tensioning roller 850 for providing pre-tightening force to the upper sealing film 6 and the lower sealing film 7. The axis of the tensioning roller 850 is parallel to the axis of the first winding drum 803 and the second winding drum 804, and the upper sealing film 6 will pass by the bottom of the tensioning roller 850 and then be wound onto the first winding drum 803; the lower sealing film 7 also passes by the bottom of the tensioning roller 850 and then be wound onto the second winding drum 804, so that the upper surface of the lower sealing film 7 and the lower surface of the upper sealing film 6 can be tightly attached, and the contact friction between the two is conducive to maintaining the same linear speed for the two, thereby improving the stability of the laundry beads production process.

[0030] Travel switches 855 are provided at both ends of the tensioning roller 850, which are used to keep the pre-tightening force applied by the tensioning roller 850 to the sealing film within an appropriate threshold range. Two baffle bars 806 are fixedly connected between the guide rails 810 and are respectively located above and below the tensioning roller 850. In fact, the two baffle bars 806 and the switch 805 are located in the same vertical plane. The tensioning roller 850 includes a counterweight shaft 851. The counterweight shaft 851 is a solid alloy rod that can rotate, so it can roll in contact with the sealing film. Since the surface of the counterweight shaft 851 is smooth and the friction coefficient is low, it can also slide relatively when the sealing film suddenly accelerates or decelerates. The two ends of the counterweight shaft 851 are rotatably connected with end shafts 852. In fact, at least one-third of the end shaft 852 is inserted into the counterweight shaft 851, forming a rotating pair to limit the relative freedom of the configuration axis.

[0031] The guide rail 810 is provided with a slide groove 811 that passes through the inner and outer sides. The slide groove 811 passes through the inner and outer sides of the guide rail 810. The end of the end shaft 852 is fixedly connected with a slip ring 854. The side of the slip ring 854 is a plane rather than a cylindrical surface. Therefore, it cooperates with the slide groove 811 to form a sliding pair and cannot rotate relative to the guide rail 810. The travel switch 855 is fixedly connected to the end shaft 852. The end shaft 852 cannot rotate relative to the guide rail 810, so the direction of the travel switch 855 will not change. The upper and lower ends of the travel switch 855 have impact-sensitive contacts for detecting two different position states. The inner side of the guide rail 810 is fixedly connected with a spur plate 802. The spur plate 802 is tensioned in opposite directions. A spur tooth surface is provided on one side of the tensioning roller 850, and the extension direction of the spur tooth surface of the spur tooth plate 802 is parallel to the extension direction of the slide groove 811. A gear 853 is provided on the outer sleeve of the end shaft 852, and the gear 853 is rotatably connected to the spur tooth plate 802. The gear 853 is suitable for meshing with the spur tooth plate 802. The gear 853 is also a solid metal part. When the entire tensioning roller 850 rises or falls suddenly, the gear 853 will suddenly accelerate from a stationary state. Due to the inertia of the gear 853 itself, it will suppress the state change of the entire tensioning roller 850. Although the inertia of the counterweight shaft 851 itself can also achieve this effect, after being equipped with the gear 853, the process of suppressing the state change will be softer and smoother, and the effect will be better.

[0032] Working principle: the frame 1 is also provided with an injection mechanism 3, a heat pressing mechanism 4, a cutting mechanism 5 and a conveying mechanism 2. The heat pressing mechanism 4 is located between the injection mechanism 3 and the cutting mechanism 5. The conveying mechanism 2 is located below the injection mechanism 3, the heat pressing mechanism 4 and the cutting mechanism 5. The winding assembly 8 needs to cooperate with these mechanisms to work together. The frame 1 is rotatably connected with a first film supply cylinder 601 and a first guide roller 602. The first film supply cylinder 601 is driven by a servo motor. The upper sealing film 6 starts from the first film supply cylinder 601 and bypasses several first guide rollers 602. The first guide roller 602 can maintain the straightness of the upper sealing film 6, and passes through the heat pressing mechanism 4 and the cutting mechanism 5 and the conveying mechanism 2. The upper sealing film 6 will be heat-pressed on the lower sealing film 7 and punched out from the base film. Then The upper sealing film 6 will become waste and then bypass the tensioning roller 850 to be wound up by the first winding drum 803 until the winding thickness of the first winding drum 803 reaches the upper limit, the upper sealing film 6 is cut off, and a new first winding drum 803 is replaced; correspondingly, the frame 1 is also rotatably connected to the second film supply drum 701 and the second guide roller 702, the second film supply drum 701 usually does not need to be driven, and can discharge the material by traction, the lower sealing film 7 starts from the second film supply drum 701, bypasses several second guide rollers 702, passes through the injection mechanism 3, the hot pressing mechanism 4 and the cutting mechanism 5 and the conveying mechanism 2, the conveying mechanism 2 has a synchronous mold plate structure, the lower sealing film 7 will be blistered into the mold cavity of the mold plate to form a concave structure, and then the injection mechanism 3 will inject the concentrated laundry detergent into the concave structure. The second winding drum 804 then moves along the upper sealing film 6 and moves along the lower sealing film 7. When the travel switch 855 is separated from the upper baffle 806, the entire tensioning roller 850 is no longer subjected to an additional downward force. Due to the mutuality of force, the force applied by the tensioning roller 850 to the sealing film is prevented from exceeding the threshold range and causing the sealing film to be over-stretched; when the contact below the travel switch 855 contacts the lower baffle 806, the rotation speed of the first winding drum 803 and the second winding drum 804 is increased, the winding speed of the sealing film is increased, and the supporting force applied to the tensioning roller 850 is increased, thereby raising the height of the tensioning roller 850, and the travel switch 855 is separated from the lower baffle 806, and is no longer subjected to an additional upward supporting force, thereby preventing the tensioning roller 850 from applying too little force to the sealing film, causing the sealing film to bend and wrinkle, affecting the smoothness of the production process.

[0033] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A film-releasing and tightening device for a laundry condensate bead production device, characterized in that: The invention comprises a frame (1), wherein an upper sealing film (6) and a lower sealing film (7) are wound inside the frame (1), and a winding assembly (8) is arranged on the frame (1), and the winding assembly (8) comprises a pair of guide rails (810) fixedly connected to the frame (1), and a first winding drum (803) and a second winding drum (804) are arranged between the two guide rails (810), and driven by a driver, and the two guide rails (810) are also slidably connected to a tensioning roller (850), and the axis of the tensioning roller (850) is parallel to the axis of the first winding drum (803) and the second winding drum (804), and the upper sealing film (6) is wound around the bottom of the tensioning roller (850) and then wound onto the first winding drum (803); and the lower sealing film (7) is wound around the bottom of the tensioning roller (850) and then wound onto the second winding drum (804).

2. The film-releasing and tightening device for laundry beads production equipment according to claim 1, characterized in that: Travel switches (855) are provided at both ends of the tensioning roller (850), and two baffle bars (806) respectively located above and below the tensioning roller (850) are fixedly connected between the guide rails (810). When the travel switch (855) contacts the baffle bar (806) above, the rotation speeds of the first winding drum (803) and the second winding drum (804) decrease; when the travel switch (855) contacts the baffle bar (806) below, the rotation speeds of the first winding drum (803) and the second winding drum (804) increase.

3. The film-releasing and tightening device of the laundry beads production equipment according to claim 2, characterized in that: Each side of the guide rail (810) has a pair of ear plates (812), and the two groups of ear plates (812) are positioned correspondingly. One pair of corresponding ear plates (812) are rotatably connected to the first winding drum (803), and the other pair of corresponding ear plates (812) are rotatably connected to the second winding drum (804).

4. The film-releasing and tightening device of the laundry beads production equipment according to claim 3, characterized in that: The tensioning roller (850) includes a counterweight shaft (851), and the two ends of the counterweight shaft (851) are rotatably connected to end shafts (852). The guide rail (810) is provided with a slide groove (811) that passes through the inner and outer side surfaces. The end of the end shaft (852) is fixedly connected to a slip ring (854) suitable for cooperating with the slide groove (811) to form a sliding pair. The travel switch (855) is fixedly connected to the end shaft (852), and the direction of the travel switch (855) remains unchanged.

5. The film-releasing and tightening device for laundry beads production equipment according to claim 4, characterized in that: The inner side surface of the guide rail (810) is fixedly connected with a spur plate (802), and the extension direction of the spur tooth surface of the spur plate (802) is parallel to the extension direction of the slide groove (811). The end shaft (852) is provided with a gear (853) on the outer sleeve, and the gear (853) is rotatably connected with the spur plate (802), and the gear (853) is suitable for meshing with the spur plate (802).

6. The film releasing and tightening device of the laundry beads production equipment according to any one of claims 1 to 5, characterized in that: The frame (1) is provided with an injection mechanism (3), a hot pressing mechanism (4), a cutting mechanism (5) and a conveying mechanism (2); the hot pressing mechanism (4) is located between the injection mechanism (3) and the cutting mechanism (5); and the conveying mechanism (2) is located below the injection mechanism (3), the hot pressing mechanism (4) and the cutting mechanism (5).

7. The film-releasing and tightening device of the laundry beads production equipment according to claim 6, characterized in that: The frame (1) is rotatably connected to a first film supply cylinder (601) and a first guide roller (602); the upper sealing film (6) starts from the first film supply cylinder (601), bypasses a plurality of the first guide rollers (602), passes between the hot pressing mechanism (4) and the cutting mechanism (5) and the conveying mechanism (2), and then bypasses the tensioning roller (850) to be wound up by the first winding cylinder (803).

8. The film-releasing and tightening device of the laundry beads production equipment according to claim 7, characterized in that: The first film supply cylinder (601) is driven by a servo motor.

9. The film-releasing and tightening device for laundry beads production equipment according to claim 6, characterized in that: The frame (1) is rotatably connected to a second film supply cylinder (701) and a second guide roller (702); the lower sealing film (7) starts from the second film supply cylinder (701), bypasses a plurality of the second guide rollers (702), passes through the injection mechanism (3), the hot pressing mechanism (4) and the cutting mechanism (5) and the conveying mechanism (2), and then bypasses the tensioning roller (850) to be wound up by the second winding cylinder (804).

10. The film-releasing and tightening device for laundry beads production equipment according to claim 9, characterized in that: The upper surface of the lower sealing film (7) that passes around the second guide roller (702) contacts the lower surface of the lower sealing film (7) that passes around the outermost layer of the second film supply cylinder (701).

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