A screw feeding machine
By designing adjustable-angle retraction and extension connection components and stable connection components, the problems of large footprint and fixed angle of traditional spiral feeders have been solved, realizing flexible layout and stable feeding of the equipment, and improving the efficiency and adaptability of PVC flooring production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEBEI HANSHAN NEW DECORATION MATERIALS CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-06-09
AI Technical Summary
Traditional screw conveyors have a fixed tilt angle that cannot be adjusted, resulting in a large space occupation, difficulty in flexible layout, impact on production efficiency and equipment adaptability, and inability to meet the feeding angle requirements of different raw materials, which can easily lead to material blockage.
The design incorporates retractable and stabilizing connection components. Through the cooperation of components such as rotating shafts, gears, racks, and screws, the angle adjustment and retraction functions of the screw feeder are realized. Combined with the telescopic pipe, a seal is maintained. The crossbar and slider form a stable triangular support structure, enhancing the connection strength and stability.
It enables flexible angle adjustment of the screw feeder, reduces space occupation, improves equipment practicality and production flexibility, ensures smooth feeding process and equipment stability, and improves production efficiency and equipment life.
Smart Images
Figure CN224336423U_ABST
Abstract
Description
Technical Field
[0001] The embodiments disclosed herein relate to the technical field of feeding machines, specifically to a screw feeder. Background Technology
[0002] In the PVC flooring production process, the spiral feeder is a key piece of equipment for material conveying, and its performance directly affects the continuity and efficiency of production. However, existing spiral feeders have significant shortcomings. Traditional spiral feeders typically maintain a fixed tilt angle, and after completing the feeding operation, the tilted spiral structure cannot be retracted. This not only occupies a large amount of space, but also makes it difficult to flexibly adjust the layout during equipment maintenance, repair, or factory space replanning, seriously affecting the space utilization rate of the production site and the efficiency of equipment scheduling.
[0003] Meanwhile, the fixed tilt angle prevents the feeder's angle from being adjusted according to actual production needs. In PVC flooring production, different processes and raw materials have varying requirements for the feed angle, making a fixed-angle feeder unsuitable for diverse production scenarios. For example, when conveying PVC raw materials with large particles or high viscosity, an inappropriate feed angle can easily lead to material blockage and poor conveying, thus affecting production rhythm, increasing downtime for cleaning, and reducing overall production efficiency. Furthermore, the inability to adjust the feed angle also limits the feeder's compatibility with other production equipment, hindering efficient collaborative operation of the production line. Therefore, developing a spiral feeder that can flexibly adjust its tilt angle and is easy to retract is crucial for improving the efficiency and flexibility of PVC flooring production. Utility Model Content
[0004] To overcome the above-mentioned defects, the embodiments of this disclosure provide a screw feeder, which solves the technical problem that traditional screw feeders in the prior art usually maintain a fixed tilt angle and cannot retract the tilted screw structure after completing the feeding work, thus occupying a large amount of space.
[0005] According to one aspect, at least one embodiment of the present disclosure provides a screw feeder, comprising:
[0006] A material bin and a screw feeder, wherein the screw feeder is located outside the material bin;
[0007] A take-up and release connection assembly is disposed between the material box and the screw feeder;
[0008] The receiving and discharging connection assembly includes an outer groove, which is formed on the side surface of the material box. A rotating shaft is rotatably connected to the bottom of the material box. The lower end of the screw feeder is fixed on the rotating shaft. A telescopic pipe is connected between the bottom side of the screw feeder and the outer groove. A screw pushing blade is provided at the bottom of the material box. The screw pushing blade is driven to rotate by electricity.
[0009] As a further technical solution, a gear is provided at one end of the rotating shaft, a slide rail is provided at the bottom of the material box, a rack is slidably connected on the slide rail, the rack meshes with the gear, and a drive shaft is rotatably connected to the bottom of the material box.
[0010] As a further technical solution, a screw is provided at one end of the transmission shaft, and an internally threaded tube is provided on one side of the rack. The internally threaded tube is connected to one end of the screw through a threaded connection, and a rocker arm is provided at one end of the screw.
[0011] As a further technical solution, a stable connection component is also included. The stable connection component includes a pair of crossbars, which are fixed at both ends of the top of the material box. An elongated groove is formed in the surface of the crossbar, and a slider is slidably connected in the elongated groove.
[0012] As a further technical solution, fixed shafts are provided on both sides of the outer wall of the screw feeder, and connecting rods are rotatably connected to the fixed shafts. One end of the connecting rod is rotatably connected to the top of the slider through a pin.
[0013] As a further technical solution, both the long groove and the slider have a T-shaped cross-section.
[0014] As a further technical solution, the bottom of the material bin is inclined towards the spiral pusher auger.
[0015] As a further technical solution, the spiral feeder can rotate a maximum angle of 60° via a rotating shaft.
[0016] The beneficial effects of the embodiments disclosed herein are as follows:
[0017] 1. In this disclosure, the retractable connection assembly, through the cooperation of components such as a rotating shaft, gears, racks, and screws, achieves flexible adjustment of the tilt angle and retraction function of the screw feeder, solving the problem of large footprint associated with traditional screw feeders with fixed angles. The design of the bottom of the material bin tilting towards the screw pusher blades, combined with the rotation of the screw pusher blades, causes the material to automatically gather towards the inlet, improving pushing efficiency. The telescopic pipe remains sealed during angle adjustment to prevent material leakage and ensure smooth feeding. This assembly allows the feeder to adjust its angle according to production needs, adapting to hoppers of different heights, improving equipment practicality and production flexibility.
[0018] 2. In this disclosure, the stable connecting assembly utilizes a crossbeam, a long groove, a slider, and a connecting rod to form a stable triangular support structure. When the screw feeder adjusts its angle, the connecting rod swings with the fixed shaft, pushing the slider to slide within the long groove, thus enhancing the connection strength and stability of the screw feeder at different inclination angles. The T-shaped structure of the long groove and slider prevents the slider from detaching, ensuring reliable support and preventing material spillage or equipment damage due to shaking during heavy-load conveying. This ensures a smooth feeding process, improves equipment reliability and service life, and enables the feeder to operate stably at various angles. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.
[0020] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;
[0021] Figure 2 This is an isometric drawing of the present disclosure;
[0022] Figure 3 This is an isometric drawing from another perspective of this disclosure;
[0023] Figure 4 This is yet another isometric view from which this disclosure is made;
[0024] In the diagram: 1. Material bin; 2. Screw feeder; 3. Retractable connection assembly; 3-1. Outer groove; 3-2. Rotating shaft; 3-3. Telescopic pipe; 3-4. Screw pusher blade; 3-5. Gear; 3-6. Slide rail; 3-7. Rack; 3-8. Drive shaft; 3-9. Screw; 3-10. Internal threaded pipe; 3-11. Rocker arm; 4. Secure connection assembly; 4-1. Cross frame; 4-2. Long groove; 4-3. Slider; 4-4. Fixed shaft; 4-5. Connecting rod. Detailed Implementation
[0025] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.
[0026] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."
[0027] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.
[0028] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0029] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.
[0030] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0031] like Figures 1-4 As shown, a screw feeder according to an embodiment of the present disclosure includes:
[0032] The material bin 1 and the screw feeder 2 are arranged outside the material bin 1;
[0033] A take-up and release connection assembly 3 is disposed between the material box 1 and the screw feeder 2;
[0034] The receiving and discharging connection assembly 3 includes an outer groove 3-1, which is formed on the side surface of the material box 1. A rotating shaft 3-2 is rotatably connected to the bottom of the material box 1. The lower end of the screw feeder 2 is fixed on the rotating shaft 3-2. A telescopic pipe 3-3 is connected between the bottom side of the screw feeder 2 and the outer groove 3-1. A screw pushing blade 3-4 is provided at the bottom of the material box 1. The screw pushing blade 3-4 is driven to rotate by electricity. One end of the rotating shaft 3-2 is provided with teeth. The bottom of the material box 1 is provided with a slide rail 3-6, and a rack 3-7 is slidably connected to the slide rail 3-6. The rack 3-7 meshes with the gear 3-5. The bottom of the material box 1 is rotatably connected with a drive shaft 3-8. One end of the drive shaft 3-8 is provided with a screw 3-9. One side of the rack 3-7 is provided with an internally threaded tube 3-10. The internally threaded tube 3-10 is connected to one end of the screw 3-9 by a threaded engagement. One end of the screw 3-9 is provided with a rocker arm 3-11.
[0035] In some examples, a retraction connection assembly 3 is designed to achieve angle adjustment and retraction of the screw feeder 2. This assembly includes an outer groove 3-1 formed on the side surface of the material bin 1, providing space for the screw feeder 2 to be stored. The rotating shaft 3-2 at its bottom is fixedly connected to the lower end of the screw feeder 2, allowing the screw feeder 2 to rotate around the rotating shaft 3-2. The spiral pushing blades 3-4 at the bottom of the material bin 1 are electrically driven to rotate, pushing the material in the material bin 1 to the inlet of the screw feeder 2. At the same time, the telescopic pipe 3-3 connects the bottom of the screw feeder 2 to the outer groove 3-1, maintaining the sealing of the material channel through elastic expansion and contraction during angle adjustment.
[0036] The gear 3-5 at one end of the rotating shaft 3-2 meshes with the rack 3-7 on the slide rail 3-6 at the bottom of the material box 1. When the rocker arm 3-11 is rotated, the rocker arm 3-11 drives the screw 3-9 on the transmission shaft 3-8 to rotate. The screw 3-9 engages with the internally threaded tube 3-10 on one side of the rack 3-7 through a thread, driving the rack 3-7 to move laterally on the slide rail 3-6. When the rack 3-7 moves, it drives the gear 3-5 to rotate, which in turn causes the rotating shaft 3-2 to drive the screw feeder 2 to rotate around the axis, thus achieving the adjustment of the tilt angle. The entire process achieves precise angle control through threaded transmission, and the flexible material of the telescopic pipe 3-3 can prevent pipe breakage due to angle changes.
[0037] like Figures 1-4As shown, this embodiment also includes a stable connecting component 4, which includes a pair of crossbeams 4-1. The crossbeams 4-1 are fixed at both ends of the top of the material box 1. The surface of the crossbeams 4-1 is provided with an elongated groove 4-2. A slider 4-3 is slidably connected in the elongated groove 4-2. Fixed shafts 4-4 are provided on both sides of the outer wall of the screw feeder 2. A connecting rod 4-5 is rotatably connected to the fixed shaft 4-4. One end of the connecting rod 4-5 is rotatably connected to the top of the slider 4-3 by a pin.
[0038] In some examples, to increase the connection strength of the screw feeder 2 at its maximum tilt angle, a stable connecting assembly 4 is designed. This assembly includes a pair of crossbars 4-1 fixed to both ends of the top of the hopper 1. The elongated grooves 4-2 on their surfaces provide a sliding track for the slider 4-3. A fixed shaft 4-4 on the outer wall of the screw feeder 2 is rotatably connected to one end of a connecting rod 4-5 via a pin. The other end of the connecting rod 4-5 is rotatably connected to the top of the slider 4-3. When the screw feeder 2 adjusts its angle, the fixed shaft 4-4 drives the connecting rod 4-5 to swing, and the connecting rod 4-5 pushes the slider 4-3 to slide within the elongated groove 4-2, forming a stable triangular structure.
[0039] For example, when the screw feeder 2 is raised to its maximum tilt angle, the angle formed by the connecting rod 4-5 and the crossbeam 4-1 reaches its maximum value, and the slider 4-3 slides to its limit position within the long groove 4-2. At this time, the rigid support of the connecting rod 4-5 distributes the weight of the screw feeder 2 onto the crossbeam 4-1, preventing the rotating shaft 3-2 from deforming due to bearing lateral force alone. The length of the long groove 4-2 matches the maximum rotation angle of the screw feeder 2, ensuring that the slider 4-3 maintains the supporting role of the connecting rod 4-5 during sliding. At the same time, the clearance between the slider 4-3 and the long groove 4-2 allows for slight adjustment to adapt to different stress states at different angles. This design keeps the screw feeder 2 stable during heavy-duty conveying, preventing material spillage or equipment damage caused by shaking.
[0040] For example, such as Figure 3 As shown, both the long groove 4-2 and the slider 4-3 have a T-shaped cross-section.
[0041] In some examples, both the long slot 4-2 and the slider 4-3 have a T-shaped cross-section. This design enhances the stability and guiding accuracy of the connecting components through mechanical limiting. The vertical segment of the T-shape is embedded in the long slot 4-2, and the horizontal segment covers the opening of the long slot 4-2. This prevents the slider 4-3 from detaching from the long slot 4-2 during sliding, while also limiting the vertical displacement of the slider 4-3, ensuring that it can only slide along the horizontal trajectory of the long slot 4-2.
[0042] For example, such as Figure 3 As shown, the bottom of the material bin 1 is all inclined towards the spiral pusher auger.
[0043] In some examples, the bottom of the hopper 1 slopes inwards towards the auger, and this funnel-shaped structure improves material conveying efficiency through gravity assistance. The slope of the inclined bottom is typically 10°~15°, causing the material in the hopper 1 to naturally gather towards the auger blades 3-4, preventing material from accumulating in corners. When the auger blades 3-4 rotate, the material concentrated at the bottom is directly pushed by the blades to the inlet of the auger feeder 2, reducing blade idling losses.
[0044] For example, such as Figure 1 As shown, the spiral feeder 2 can rotate up to a maximum angle of 60° via the rotating shaft 3-2.
[0045] In some examples, the maximum rotatable angle of the screw feeder 2 via the rotating shaft 3-2 is set to 60°. This angle parameter balances the feeding height requirements with equipment stability. The 60° tilt angle allows the discharge port of the screw feeder 2 to reach a higher position, meeting the feeding needs of hoppers at different heights, while avoiding structural stress concentration caused by excessive angle. When the screw feeder 2 is raised to 60°, the lateral force borne by the rotating shaft 3-2 is distributed to the slide rail 3-6 at the bottom of the hopper 1 through the transmission of gear 3-5 and rack 3-7. Meanwhile, the connecting rod 4-5 of the stable connecting assembly 4 and the crossbeam 4-1 form a near-equilateral triangle support structure, maximizing the support strength.
[0046] In actual use: Material is poured into the material bin 1, and the spiral pusher blades 3-4 at the bottom of the material bin 1 are activated. Their electric drive rotates, concentrating and pushing the material towards the inlet of the spiral feeder 2. When the tilt angle of the spiral feeder 2 needs adjustment, the rocker arm 3-11 is turned. The rocker arm 3-11 drives the screw 3-9 on the transmission shaft 3-8 to rotate. The screw 3-9 engages with the internal threaded tube 3-10 on one side of the rack 3-7, driving the rack 3-7 to move laterally on the slide rail 3-6. The rack 3-7 drives the gear 3-5 to rotate, which in turn causes the rotating shaft 3-2 to rotate the spiral feeder 2 around the shaft. During this process, the telescopic pipe 3-3 between the bottom of the spiral feeder 2 and the outer groove 3-1 elastically expands and contracts to maintain a sealed material passage. Simultaneously, the connecting rod 4-5 on the fixed shaft 4-4 on the outer wall of the spiral feeder 2 pushes the slider 4-3 to slide within the long groove 4-2 of the crossbar 4-1 as the angle changes, forming a stable support structure. After adjusting to the desired angle, stop rotating the rocker arm 3-11, and the screw feeder 2 will begin feeding. After feeding is complete, rotate the rocker arm 3-11 in the opposite direction to make the screw feeder 2 rotate around the rotating shaft 3-2 and retract into the outer groove 3-1 on the side surface of the material box 1, reducing space occupation.
[0047] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.
Claims
1. A screw feeder, characterized in that, include: A material bin (1) and a screw feeder (2), wherein the screw feeder (2) is disposed outside the material bin (1); A take-up and release connection assembly (3) is disposed between the material box (1) and the screw feeder (2); The receiving and releasing connection assembly (3) includes an outer groove (3-1), which is opened on the side surface of the material box (1). A rotating shaft (3-2) is rotatably connected to the bottom of the material box (1). The lower end of the spiral feeder (2) is fixed on the rotating shaft (3-2). A telescopic pipe (3-3) is connected between the bottom side of the spiral feeder (2) and the outer groove (3-1). A spiral pushing blade (3-4) is provided at the bottom of the material box (1). The spiral pushing blade (3-4) is driven to rotate by electricity.
2. The screw feeder according to claim 1, characterized in that, A gear (3-5) is provided at one end of the rotating shaft (3-2), a slide rail (3-6) is provided at the bottom of the material box (1), a rack (3-7) is slidably connected on the slide rail (3-6), the rack (3-7) meshes with the gear (3-5), and a drive shaft (3-8) is rotatably connected to the bottom of the material box (1).
3. The screw feeder according to claim 2, characterized in that, One end of the drive shaft (3-8) is provided with a screw (3-9), and one side of the rack (3-7) is provided with an internally threaded tube (3-10). The internally threaded tube (3-10) is connected to one end of the screw (3-9) by a threaded engagement. One end of the screw (3-9) is provided with a rocker arm (3-11).
4. The screw feeder according to claim 1, characterized in that, It also includes a stabilizing connection component (4), which includes a pair of crossbars (4-1), which are fixed at both ends of the top of the material box (1). The crossbars (4-1) have an elongated groove (4-2) on their surface, and a slider (4-3) is slidably connected in the elongated groove (4-2).
5. A screw feeder according to claim 4, characterized in that, The spiral feeder (2) has fixed shafts (4-4) on both sides of its outer wall. A connecting rod (4-5) is rotatably connected to the fixed shaft (4-4). One end of the connecting rod (4-5) is rotatably connected to the top of the slider (4-3) via a pin.
6. A screw feeder according to claim 4, characterized in that, Both the long groove (4-2) and the slider (4-3) have a T-shaped cross-section.
7. A screw feeder according to claim 1, characterized in that, The bottom of the material bin (1) is all inclined towards the spiral push auger.
8. A screw feeder according to claim 1, characterized in that, The spiral feeder (2) can rotate up to a maximum angle of 60° via the rotating shaft (3-2).