A longitudinal pushing device for thin film garbage bags

Abstract

This utility model discloses a longitudinally positioned pushing device for film garbage bags, aiming to solve the problem of excessive lateral space occupied by existing pushing mechanisms. The device includes a vertically fixed bidirectional synchronous ball screw module with two synchronously moving sliders. Two equal-length connecting rods are hinged at one end to the two sliders respectively, and at the other end to a common ejector plate. This structure forms an isosceles triangular linkage mechanism, driving the sliders to perform vertical opening and closing movements via the ball screw, thereby converting the vertical driving force into precise horizontal linear pushing motion of the ejector plate. This solution, by arranging the drive source longitudinally, greatly shortens the width of the equipment, effectively improving the space utilization rate of the production workshop and facilitating higher-density production line layouts.

Description

Technical Field

[0001] This utility model relates to the field of material conveying, specifically to a longitudinally positioned pushing device for film garbage bags. Background Technology

[0002] In various automated production equipment, the actuator that enables the linear feeding of materials or products is one of the basic building blocks. For finished products like garbage bag rolls, after winding, a feeding device is usually needed to push them off the mandrel. In traditional equipment designs, to match the horizontal feeding direction, the power source driving this device, such as a long-stroke cylinder or electric lead screw, is almost always installed horizontally. This layout is intuitive and easy to implement, but its inherent drawbacks are also quite obvious: the length of the drive source itself, plus the required stroke, jointly determines the size of the equipment in this dimension. In modern factories where space is at a premium, the floor space occupied by equipment is an important indicator of its economic efficiency. When dozens of production lines need to be deployed side-by-side on a large scale and at high density, the additional lateral space occupied by each piece of equipment due to the traditional horizontal drive method is accumulated, ultimately reducing the number of production lines that the factory can accommodate, directly limiting the company's production capacity and space efficiency. Utility Model Content

[0003] The purpose of this utility model is to provide a longitudinally placed feeding device for thin film garbage bags, so as to solve the problem that the existing feeding devices occupy too much lateral space due to the horizontal setting of the drive mechanism, resulting in low production line layout density and low factory space utilization.

[0004] To solve the above-mentioned technical problems, this utility model specifically provides the following technical solution: A longitudinal feeding device for film garbage bags, used in conjunction with a turntable and several straight rods, wherein the straight rods are evenly distributed on the turntable along the circumference and can rotate with the turntable, the longitudinal feeding device includes: The bidirectional synchronous ball screw module is fixed in a vertical position and has two sliders that can move synchronously in opposite directions. Two connecting rods of equal length, each with bushings formed at both ends for shaft connection, and one end of each connecting rod is hinged to two corresponding sliders. The ejector plate has a base plate and a movable plate located on the side of the base plate away from the bidirectional synchronous ball screw module. The upper half of the movable plate is axially connected to the base plate, and the lower half of the movable plate is suspended. A limiting mechanism located on the downward path of the movable plate is provided on the side of the base plate that is attached to the movable plate. The lower end of the movable plate is located on the circumferential motion path of the straight rod. The first shaft seat is fixedly installed on the side of the ejector plate facing the bidirectional synchronous ball screw module, and the first shaft seat is simultaneously hinged to the free ends of the two connecting rods. Among them, the straight rod is parallel to the midline of the hypotenuse of the isosceles triangle formed by the two connecting rods and the bidirectional synchronous ball screw module.

[0005] Furthermore, the lower end of the movable plate is provided with a step opening that blocks the movement path of the straight rod.

[0006] Furthermore, the limiting mechanism consists of several pins fixed to the base plate, which are distributed along the downward path of the movable plate to limit the lower limit position of the movable plate so that it is always located at a position that can block the movement of the straight rod.

[0007] Furthermore, each slider is provided with a second shaft seat, and a connecting shaft for the shaft sleeve to be fitted is fixed on the second shaft seat.

[0008] Furthermore, the width of the second bearing is half the width of the slider, and the second bearings on the two sliders are located on opposite sides of each other so that the two connecting rods are staggered. A limiting bolt for axially preventing the bearing from slipping is screwed onto one end of the connecting bushing.

[0009] Furthermore, the longitudinal pusher can be installed on a drive cabinet, the turntable is installed on the drive cabinet, the bidirectional synchronous ball screw module is fixedly set on the inner wall of the drive cabinet, the ejector plate is located on the outer side of the drive cabinet, and the cabinet wall of the drive cabinet is provided with longitudinal clearance through holes for avoiding the tilting movement of the connecting rod.

[0010] Furthermore, the drive cabinet has a set of L-shaped reinforcing sheet metal strips fixedly installed on the inner cabinet wall where each longitudinal clearance through hole is located. There are two L-shaped reinforcing sheet metal strips in each set, and they are located on both sides of the corresponding longitudinal clearance through hole. A strip gap channel is formed between the two L-shaped reinforcing sheet metal strips in each set to guide and limit the movement of the connecting rod.

[0011] The beneficial effects of this utility model are: 1. The core advantage of this utility model lies in its innovative spatial layout. By changing the traditional horizontal installation of the drive source (bidirectional synchronous ball screw module) to a vertical installation, and using an isosceles triangular linkage mechanism to convert the vertical driving force into a smooth horizontal pushing motion, the superposition of drive source dimensions in the width direction of the equipment is fundamentally eliminated. This design significantly reduces the lateral footprint (i.e., "thickness") of the entire equipment, and can greatly improve the space utilization rate of the factory workshop in application scenarios where multiple production lines are deployed side by side. 2. Using a ball screw module as the drive source, compared to traditional cylinder drives, it can achieve more precise control over the speed, acceleration, and position of the pusher plate. This servo drive characteristic makes the pushing process smoother and gentler, reducing the impact on the finished roll, while its high repeatability positioning accuracy also ensures precise connection with downstream processes. Attached Figure Description

[0012] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention installed in the drive cabinet; Figure 2 This is a front view of the utility model installed in the drive cabinet; Figure 3 This is a three-dimensional structural diagram of the utility model installed on the inner side of the drive cabinet; Figure 4 This is a schematic diagram of the planar structure of the ejector plate according to an embodiment of the present utility model; Figure 5 This is a three-dimensional structural diagram of the turntable and straight rod in accordance with an embodiment of the present utility model; Figure 6 for Figure 5 Enlarged schematic diagram of the structure at point A in the diagram; Figure 7 for Figure 5 A side view diagram; Figure 8 This is a three-dimensional structural diagram of an embodiment of the present utility model; Figure 9 for Figure 8 Enlarged schematic diagram of the structure at point B in the diagram; The labels in the diagram represent the following: 1-turntable; 2-straight rod; 3-bidirectional synchronous ball screw module; 4-slider; 5-connecting rod; 6-sleeve; 7-base plate; 8-moving plate; 9-first bearing seat; 10-step opening; 11-pin; 12-second bearing seat; 13-connecting shaft; 14-limiting bolt; 15-drive cabinet; 16-longitudinal clearance through hole; 17-L-shaped reinforced sheet metal strip. Detailed Implementation

[0014] 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.

[0015] Reference Figures 1 to 9As shown, this utility model provides a vertically positioned feeding device for film garbage bags, which cooperates with a turntable 1 and several straight rods 2. The straight rods 2 are evenly distributed on the turntable 1 along the circumferential direction, and the straight rods 2 can rotate with the turntable 1. The vertically positioned feeding device includes: a bidirectional synchronous ball screw module 3, which is fixed in a vertical position and has two sliders 4 that can move synchronously in opposite directions. This vertical installation method is the basis for the space saving of this device.

[0016] The device also includes two connecting rods 5 of equal length, each with bushings 6 formed at both ends for shaft connection. One end of each connecting rod 5 is hinged to two corresponding sliders 4. To achieve a stable hinge, each slider 4 is provided with a second bearing seat 12, on which a connecting shaft 13 for the bushing 6 to be fitted is fixed. For a more compact structure, the width of the second bearing seat 12 can be designed to be half the width of the slider 4. The second bearing seats 12 on the two sliders 4 are located on opposite sides so that the two connecting rods 5 are staggered. This staggered arrangement allows the two connecting rods 5 to partially overlap during movement, thereby obtaining a larger stroke range or a smaller contraction size. A limiting bolt 14 for axially preventing the bushing 6 from slipping is screwed onto the end of the connecting shaft 13 that is fitted with the bushing 6, ensuring the reliability of the connection.

[0017] The core material pushing component of the device is a material ejector plate, which has a base plate 7 and a movable plate 8 located on the side of the base plate 7 away from the bidirectional synchronous ball screw module 3. The upper half of the movable plate 8 is axially connected to the base plate 7, and the lower half of the movable plate 8 is suspended downwards. A limiting mechanism is provided on the side of the base plate 7 that is in contact with the movable plate 8, located on the downward path of the movable plate 8. A first bearing seat 9 is fixedly installed on the side of the material ejector plate facing the bidirectional synchronous ball screw module 3, and the first bearing seat 9 is simultaneously hinged to the free ends of the two connecting rods 5.

[0018] Thus, the two connecting rods 5 and the bidirectional synchronous ball screw module 3 together form an isosceles triangle connecting rod mechanism. When the ball screw module drives the two sliders 4 to move towards each other, the height of the isosceles triangle increases, the base shortens, and its vertex, i.e., the position of the first bearing 9, retracts backward; when the two sliders 4 move away from each other, the height of the isosceles triangle decreases, the base lengthens, and its vertex pushes forward. Through precise design, the hypotenuse of the isosceles triangle formed by the two connecting rods 5 and the bidirectional synchronous ball screw module 3 can be made parallel to the straight rod 2, thereby ensuring that the ejector plate always performs linear motion parallel to the straight rod 2 throughout the entire pushing and retraction process.

[0019] To achieve precise positioning and blocking of the straight rod 2 on the turntable 1, a step opening 10 is provided at the lower end of the movable plate 8 to block the movement path of the straight rod 2. When the turntable 1 rotates, the straight rod 2 currently located at the step opening 10 will use the step opening 10 to push the movable plate 8 away at a small angle so that it can pass smoothly. Then, the movable plate 8 falls around its hinge point with the base plate 7 until it is blocked and positioned by the limiting mechanism, thus waiting for the next straight rod 2 to enter the step opening 10 again. In this state, the movable plate 8 moves on the straight rod 2 to push away the film garbage bag roll on the straight rod 2. The limiting mechanism consists of several pins 11 fixed on the base plate 7. The pins 11 are distributed on the downward path of the movable plate 8 to limit the lower limit position of the movable plate 8 so that it is always in a position that can block the movement of the straight rod 2, ensuring the effectiveness of the positioning function each time.

[0020] In specific installation applications, the longitudinal pusher device can be installed on a drive cabinet 15, and the turntable 1 is installed on the drive cabinet 15. The bidirectional synchronous ball screw module 3 is fixedly set on the inner wall of the drive cabinet 15, and the ejector plate is located on the outer side of the drive cabinet 15. The cabinet wall of the drive cabinet 15 is provided with longitudinal clearance through holes 16 for avoiding the tilting movement of the connecting rod 5. In order to enhance the structural strength of the cabinet wall after the opening and to guide the movement of the connecting rod 5, a set of L-shaped reinforcing sheet metal strips 17 are fixedly set on the inner cabinet wall of the drive cabinet 15 at each longitudinal clearance through hole 16. There are two L-shaped reinforcing sheet metal strips 17 in each set, and they are located on both sides of the corresponding longitudinal clearance through hole 16. The two L-shaped reinforcing sheet metal strips 17 in each set form a strip-shaped gap channel for guiding and limiting the movement of the connecting rod 5, ensuring the stability of the connecting rod 5 mechanism in high-speed reciprocating motion.

[0021] The above embodiments are merely exemplary embodiments of this utility model and are not intended to limit this utility model. The scope of protection of this utility model is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this utility model within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered as falling within the scope of protection of this utility model.

Claims

1. A vertical pushing device for thin film garbage bags, used in cooperation with a rotating disc (1) and a plurality of straight rods (2) which are evenly distributed on the rotating disc (1) in the circumferential direction and which can rotate with the rotating disc (1), characterized in that, The longitudinally positioned feeding device includes: The bidirectional synchronous ball screw module (3) is fixed in a vertical position and has two sliders (4) that can move synchronously in opposite directions. Two connecting rods (5) of equal length, each of which has a bushing (6) formed at both ends for shaft connection, and one end of each of the two connecting rods (5) is respectively hinged to two corresponding sliders (4); The ejector plate has a base plate (7) and a movable plate (8) located on the side of the base plate (7) away from the bidirectional synchronous ball screw module (3). The upper half of the movable plate (8) is axially connected to the base plate (7), and the lower half of the movable plate (8) is suspended. The base plate (7) is attached to the side of the movable plate (8) and a limiting mechanism is provided on the downward path of the movable plate (8). The lower end of the movable plate (8) is located on the circumferential motion path of the straight rod (2). The first bearing seat (9) is fixedly disposed on the side of the ejector plate facing the bidirectional synchronous ball screw module (3), and the first bearing seat (9) is simultaneously hinged to the free ends of the two connecting rods (5). Among them, the hypotenuse of the isosceles triangle formed by the two connecting rods (5) and the bidirectional synchronous ball screw module (3) is parallel to the straight rod (2).

2. A pusher device for vertical placement of thin film garbage bags according to claim 1, characterized in that The lower end of the movable plate (8) is provided with a step opening (10) that blocks the movement path of the straight rod (2).

3. A pusher device for vertical placement of thin film garbage bags according to claim 1, characterized in that The limiting mechanism consists of several pins (11) fixed on the base plate (7). The pins (11) are distributed along the downward path of the movable plate (8) to limit the lower limit position of the movable plate (8) so that it is always located at a position that can block the movement of the straight rod (2).

4. A pusher device for vertical placement of thin film garbage bags according to claim 1, characterized in that, Each slider (4) is provided with a second bearing seat (12), and a connecting shaft (13) for the bushing (6) to be fitted is fixedly provided on the second bearing seat (12).

5. A pusher device for longitudinal placement of thin film garbage bags according to claim 4, characterized in that The width of the second bearing seat (12) is half the width of the slider (4). The second bearing seats (12) on the two sliders (4) are located on opposite sides so that the two connecting rods (5) are staggered. The end of the connecting shaft (13) with the bushing (6) is screwed with a limiting bolt (14) for axially preventing the bushing (6) from falling off.

6. A pusher device for vertical placement of thin film garbage bags according to claim 1, characterized in that The longitudinally placed pusher can be installed on a drive cabinet (15). The turntable (1) is installed on the drive cabinet (15). The bidirectional synchronous ball screw module (3) is fixedly set on the inner wall of the drive cabinet (15). The ejector plate is located on the outer side of the drive cabinet (15). The cabinet wall of the drive cabinet (15) is provided with a longitudinal clearance through hole (16) for avoiding the tilting movement of the connecting rod (5).

7. A pusher device for longitudinal placement of a film garbage bag according to claim 6, characterized in that The drive cabinet (15) has a set of L-shaped reinforcing sheet metal strips (17) fixedly installed on the inner cabinet wall where each longitudinal clearance through hole (16) is located. There are two L-shaped reinforcing sheet metal strips (17) in each set, and they are located on both sides of the corresponding longitudinal clearance through hole (16). A strip gap channel is formed between the two L-shaped reinforcing sheet metal strips (17) in each set to guide and limit the movement of the connecting rod (5).

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