Quick-release type feeding screw and feeding machine

Abstract

The utility model discloses a quick release type feeding screw and a feeding machine. The quick release type feeding screw comprises a screw body and a screw shaft, one of a sleeve and a sliding groove is arranged at the tail end of the screw body, and the other one of the sleeve and the sliding groove is arranged at the front end of the screw shaft. A groove hole is formed in the circumferential face of the sleeve and is of a through hole structure, the bottom of the groove hole communicates with the interior of the sleeve, and a flat key is fixedly arranged in the groove hole. The side face of the tail end of the sliding groove communicates with an installation groove, and the side, away from the sliding groove, of the installation groove is the same as the flat key in structure. Stability and high precision of product performance are guaranteed, fast and efficient disassembly and assembly of the screw body, installation and maintenance performance and high precision of material control are guaranteed, meanwhile, it is guaranteed that equipment performance is not affected, and stability, precision and safety are achieved.

Description

Technical Field

[0001] The utility model belongs to the field of material transportation and relates to a quick-detachable feeding screw and a feeding machine. Background Art

[0002] In today's automated and refined production, for example in industries like rubber and plastics, batteries, pharmaceuticals, and food, precise raw material delivery is essential, specifically requiring the use of continuous feeding equipment. During production, for example, when blending raw materials for plastics or lithium batteries, the feed screw often needs to be disassembled, cleaned, or replaced after a period of use to maintain material flow and prevent blockages caused by abnormal materials that could compromise quality control. Rapid feed screw replacement is crucial to ensure uninterrupted production progress. This requires both speed and efficiency while also ensuring stable, precise, and safe equipment performance.

[0003] The working principle of a feed screw is to push material from the feed end to the discharge end through the screw's rotation. As the screw rotates, due to the screw pitch and the geometry of the screw groove, the conveyed material is pushed along the screw groove as the screw rotates, and ultimately discharged from the pump body. This working principle enables the feed screw to effectively convey a variety of media, including high-viscosity liquids, solid particles, high-temperature, highly corrosive materials, and other diverse properties.

[0004] Existing feeder screws on the market use welded semicircular ends or sleeves, making disassembly complex and cumbersome, and resulting in poor stability. For example, the "Quick-Release Corrosion-Resistant Feeder Screw and Feeder" disclosed in CN 219714522 U uses an interference fit connection between the mandrel and sleeve, and the sleeve is made of plastic. This makes the sleeve susceptible to deformation and loosening after repeated disassembly and temperature fluctuations. The quick-release design only describes the external sleeve, but does not address the integration and quick release of the feeder screw. Utility Model Content

[0005] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a quick-release feeding screw and feeder, which not only ensures the stability and high precision of product performance, but also ensures that the screw body can be quickly and efficiently disassembled and assembled, and the installation and maintenance are easy and the material can be controlled with high precision, while ensuring that the performance of the equipment is not affected, and is stable, accurate and safe.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A quick-release feeding screw comprises a screw body and a screw shaft;

[0008] The end of the screw body is provided with a sleeve or a slide groove, and the front end of the screw shaft is provided with the other sleeve or the slide groove;

[0009] A slot is provided on the circumference of the sleeve. The slot is a through-hole structure, the bottom of which is connected to the inside of the sleeve. A flat key is fixed in the slot.

[0010] The front end of the slide is connected to the end of the screw body or the front end of the screw shaft, and the side of the end of the slide is connected to the installation groove. The side of the installation groove away from the slide has the same structure as the flat key.

[0011] Preferably, the top surface of the flat key is an arc surface, the radius of which is consistent with the outer diameter of the sleeve. After the flat key is inserted into the slot, the top surface is flush with the peripheral surface of the sleeve.

[0012] Preferably, the slot is a waist-shaped hole, the two flat key side surfaces of the flat key are vertical planes, the two flat key end surfaces of the flat key are semi-cylinders, and the bottom of the flat key is a plane.

[0013] Furthermore, the bottom plane of the flat key is provided with a chamfered angle.

[0014] Furthermore, the bottom surface of the side of the installation groove away from the sliding groove is a plane, the side surface of the installation groove is a vertical plane, and the end surfaces of the two installation grooves are arc-shaped in the shape of a quarter circle.

[0015] Furthermore, the side of the installation groove close to the slide groove is an open structure, the bottom surface is a transition plane, and the bottom surface of the slide groove, the transition plane and the bottom surface are connected in sequence through edge transitions.

[0016] Preferably, after the screw body and the screw shaft are installed, the flat key and the installation groove are interference fit.

[0017] Preferably, when the slide groove is provided on the screw body, the mounting groove is located on a side of the end of the slide groove facing the forward rotation direction of the screw body.

[0018] Preferably, when the slide groove is provided on the screw shaft, the mounting groove is located on the side of the end of the slide groove facing the screw shaft or the reverse direction.

[0019] A feeder includes a feed barrel, a drive device and a quick-release feeding screw. A feed port is provided at the top of the front end of the feed barrel, and a discharge port is provided at the rear end of the feed barrel. The drive device is installed at the front end of the feed barrel, the end of the screw shaft in the quick-release feeding screw is connected to the output end of the drive device, and the screw body is located in the feed barrel.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The utility model fixes the flat key to the sleeve to form an integral body, and fixes the screw body to the screw shaft through the sliding groove and rotational installation. The installation and disassembly are convenient and efficient, and the installation is simple and easy to operate. Correspondingly, this structure uses the flat key to transmit the rotational force. Through precise matching, the screw shaft transmits the rotational force to the flat key, which is then transmitted to the screw body through the flat key to rotate it. Because the flat key has a relatively stable and efficient force transmission characteristic, its structure is stable, so that the screw body rotates accurately, the rotation output is stable, and there is no slipping or idle shaft rotation. The flat key can withstand large torque, especially rotational force, with low force loss, and is easy to process and install.

[0022] Furthermore, the flat key and the mounting groove are interference fit, which improves the installation reliability and prevents the flat key from falling out of the mounting groove when the screw body is in use, causing the screw body to be thrown out and cause danger.

[0023] Furthermore, the mounting groove is located on the side of the end of the slide groove facing the positive rotation direction of the screw body, so that when the screw shaft drives the screw body to rotate, the flat key always tends to rotate toward the side of the mounting groove away from the slide groove, and the side surface of the flat key always squeezes the side surface of the mounting groove, driving the mounting groove and the screw body to rotate, thereby preventing the flat key from falling out of the mounting groove when the screw body is in use, causing the screw body to be thrown out and causing danger.

[0024] Furthermore, the mounting groove is located on the side of the end of the slide groove facing the reverse direction of the screw shaft, so that when the screw shaft drives the screw body to rotate, the side of the mounting groove away from the slide groove always tends to rotate toward the flat key, and the side surface of the mounting groove always squeezes the side surface of the flat key, driving the flat key and the screw body to rotate, thereby preventing the flat key from falling out of the mounting groove when the screw body is in use, causing the screw body to be thrown out and causing danger. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is an axonometric drawing of the overall assembly form of the quick-release feeding screw of the utility model;

[0026] Figure 2 This is a cross-sectional view of the overall assembly form of the quick-release feeding screw of the utility model;

[0027] Figure 3 This is an exploded axonometric view of the quick-release feeding screw of the utility model;

[0028] Figure 4 This is a schematic diagram of the flat key structure of the quick-release feeding screw of the utility model;

[0029] Figure 5 This is a cross-sectional view of the installation and fixing key of the quick-release feeding screw of the utility model;

[0030] Figure 6 This is a cross-sectional view of the feeding screw body of the quick-release feeding screw of the utility model;

[0031] Figure 7 This is a diagram showing the installation arrangement of the quick-release feeding screw of the utility model.

[0032] In the figure, 1, flat key; 2, screw body; 3, screw shaft; 1-1, top surface; 1-2, flat key end surface; 1-3, flat key side surface; 2-1, slot hole; 2-2, sleeve; 2-3, slot hole end surface; 2-4, extended hole; 2-5, spiral groove; 3-1, slide groove; 3-2, transition plane; 3-3, bottom surface; 3-4, mounting groove end surface; 3-5, mounting groove side surface; 3-6, extension rod. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like, indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms "installed", "connected", and "connected" should be understood in a broad sense, for example, they can be fixedly connected, detachably connected, or integrally connected; they can be mechanically connected, electrically connected, or able to communicate with each other; they can be directly connected, or indirectly connected through an intermediate medium, or they can be internally connected between two elements or an interactive relationship between two elements. The term "and / or" used herein includes any and all combinations of one or more related listed items. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances. The terms used herein in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model.

[0036] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but a person of ordinary skill in the art will recognize the application of other processes and / or the use of other materials.

[0037] Example 1

[0038] like Figure 1-6 As shown in FIG, the quick-release feeding screw of the present invention comprises a flat key 1, a screw body 2 and a screw shaft 3 which are assembled and installed.

[0039] The middle and front end parts of the screw body 2 are threaded areas, on which threads are provided. Spiral grooves 2-5 are provided along the threads at the bottom of the threads. In this embodiment, the screw body 2 adopts a standard screw, a variable diameter screw, a large pitch screw or an elastic screw, all of which are suitable for the quick-release structure of this application.

[0040] A sleeve 2 - 2 is provided at the end of the screw body 2 , and the inner diameter of the sleeve 2 - 2 is equal to the diameter of the front end of the screw shaft 3 .

[0041] An axial slot 2-1 is provided on the peripheral surface of the sleeve 2-2. The slot 2-1 is a through hole structure, and the bottom is connected to the interior of the sleeve 2-2. The slot 2-1 is a waisted hole, and the two slot end faces of the slot 2-1 are semicircular arc surfaces.

[0042] A flat key 1 is fixedly provided in the slot 2-1. The thickness of the flat key 1 is greater than the depth of the slot 2-1. The top surface 1-1 of the flat key 1 is an arc surface, and the radius is consistent with the outer diameter of the sleeve 2-2. The two flat key side surfaces 1-3 of the flat key 1 are vertical planes. The two flat key end surfaces 1-2 of the flat key 1 are semi-cylinders, which are consistent with the structural dimensions of the end of the slot 2-1. The bottom of the flat key 1 is a plane, and the bottom plane of the flat key 1 is provided with a chamfer. After the flat key 1 is inserted into the slot 2-1, the top surface 1-1 is flush with the circumferential surface of the sleeve 2-2.

[0043] The screw shaft 3 is provided with an axial mounting groove near the front end, and an axial slide groove 3-1 is provided at the front end. The front end of the slide groove 3-1 is connected to the front end of the screw shaft 3, and the end of the slide groove 3-1 is connected to the mounting groove. The mounting groove is located on the side of the end of the slide groove 3-1.

[0044] The side of the mounting groove away from the slide groove 3-1 has the same structure as the flat key 1, and the bottom surface 3-3 is a plane, which is used to fit with the bottom of the flat key 1 to achieve surface contact; the side surface 3-5 of the mounting groove is a vertical plane, which is used to fit with one of the flat key side surfaces 1-3 of the flat key 1 to achieve surface contact; the two end surfaces 3-4 of the mounting groove are arc-shaped in a quarter circle, which are used to fit with the two flat key end surfaces 1-2 of the flat key 1 in a quarter cylindrical area to achieve surface contact.

[0045] The side of the mounting groove close to the slide groove 3-1 is an open structure, the bottom surface is a transition plane 3-2, the two end surfaces are vertical planes, and the distance between the two end surfaces is equal to the length of the flat key 1.

[0046] The bottom surface of the slide groove 3-1 is also flat, and the front side wall of the slide groove 3-1 is provided with a guide opening, which is used to guide the flat key 1 to facilitate insertion into the slide groove 3-1 when the screw shaft 3 is inserted into the sleeve 2-2 and the slide groove 3-1 and the flat key 1 are tried to be aligned.

[0047] The bottom surface of the chute 3-1, the transition plane 3-2 and the bottom surface 3-3 are sequentially connected through edge transitions.

[0048] An extension hole 2-4 is provided inside the end of the screw body 2, and the inner diameter of the extension hole 2-4 is smaller than the inner diameter of the sleeve 2-2. The end of the extension hole 2-4 is connected to the front end of the sleeve 2-2, and an extension rod 3-6 is provided at the front end of the screw shaft 3. The diameter of the extension rod 3-6 is smaller than the diameter of the screw shaft 3, and the diameter of the extension rod 3-6 is equal to the inner diameter of the extension hole 2-4. When the screw shaft 3 and the screw body 2 are connected, the extension rod 3-6 can be inserted into the extension hole 2-4 of the screw body 2, so that the installation fit has a longer combination and fixation, and the screw body 2 is stable after installation.

[0049] The thickness of the flat key 1 is equal to the sum of the depth of the slot 2-1 and the depth of the installation groove. The flat key 1 is inserted into and welded into the slot 2-1 on the sleeve 2-2. The top surface 1-1 of the flat key 1 is flush with the peripheral surface of the sleeve 2-2.

[0050] When the screw body 2 and the screw shaft 3 are installed, the screw body 2 is inserted into the front end of the screw shaft 3 through the sleeve 2-2, so that the extension rod 3-6 is inserted into the extension hole 2-4 of the screw body 2, and the screw body 2 is rotated to align the flat key 1 with the slide groove 3-1. The guide opening on the front side wall of the slide groove 3-1 can guide the flat key 1 to be easily inserted into the slide groove 3-1. The screw body 2 continues to be inserted into the rear end of the screw shaft 3 through the sleeve 2-2 until the flat key 1 reaches the end of the slide groove 3-1. The screw body 2 is rotated to align the flat key 1 with the slide groove 3-1. The key 1 rotates into the installation groove. After the flat key 1 passes through the transition plane 3-2, it is finally located on the side of the installation groove away from the slide groove 3-1. At this time, one of the flat key side surfaces 1-3 of the flat key 1 is in contact with the side surface 3-5 of the installation groove to achieve surface contact. The quarter-cylindrical area of the two flat key end surfaces 1-2 of the flat key 1 is in contact with the two installation groove end surfaces 3-4 to achieve surface contact. The bottom of the flat key 1 is in contact with the bottom surface 3-3 to achieve surface contact. At this point, the installation of the screw body 2 and the screw shaft 3 is completed.

[0051] When disassembling the screw body 2 and the screw shaft 3, rotate the screw body 2 in the opposite direction to make the flat key 1 leave the installation groove, and the flat key 1 withdraws to the end of the slide groove 3-1, and then pull the screw body 2 out of the front end of the screw shaft 3. At this point, the disassembly of the screw body 2 and the screw shaft 3 is completed.

[0052] In this embodiment, after the screw body 2 and the screw shaft 3 are installed, the flat key 1 and the installation groove are interference fit, which improves the installation reliability and prevents the flat key 1 from falling out of the installation groove when the screw body 2 is in use, causing the screw body 2 to be thrown out and cause danger.

[0053] In this embodiment, the mounting groove is located on the side of the end of the slide groove 3-1 facing the reverse direction of the screw shaft 3, so that when the screw shaft 3 drives the screw body 2 to rotate, the side of the mounting groove away from the slide groove 3-1 always tends to rotate toward the flat key 1, and the side surface 3-5 of the mounting groove always squeezes the side surface 1-3 of the flat key, driving the flat key 1 and the screw body 2 to rotate, thereby preventing the flat key 1 from falling out of the mounting groove when the screw body 2 is in use, causing the screw body 2 to be thrown out and causing danger.

[0054] Example 2

[0055] like Figure 7 As shown, in this embodiment, the middle and front end structures of the screw body 2 and the end structure of the screw shaft 3 remain unchanged, and the end structure of the screw body 2 and the front end structure of the screw shaft 3 are interchanged, that is, the sleeve 2-2 and the extension hole 2-4 are located at the front end of the screw shaft 3, and the extension rod 3-6, the mounting groove and the slide groove 3-1 are located at the end of the screw body 2. The installation and disassembly process is the same as that in Example 1.

[0056] In this embodiment, the mounting groove is located on the side of the end of the slide groove 3-1 facing the positive rotation direction of the screw body 2, so that when the screw shaft 3 drives the screw body 2 to rotate, the flat key 1 always tends to rotate toward the side of the mounting groove away from the slide groove 3-1, and the flat key side surface 1-3 always squeezes the mounting groove side surface 3-5, driving the mounting groove and the screw body 2 to rotate, thereby preventing the flat key 1 from falling out of the mounting groove when the screw body 2 is in use, causing the screw body 2 to be thrown out and causing danger.

[0057] Example 3

[0058] This embodiment discloses a feeder, including a feed barrel, a driving device and the quick-release feeding screw described in Example 1 or 2. A feed port is provided at the top front end of the feed barrel for loading materials, and a discharge port is provided at the rear end of the feed barrel for outputting and discharging materials; the driving device is installed at the front end of the feed barrel, the end of the screw shaft 3 in the quick-release feeding screw is connected to the output end of the driving device, the screw body 2 is located in the feed barrel, the end of the screw body 2 is located at the feed port, and the front end of the screw body 2 is located at the discharge port.

[0059] The feed barrel provides the feeder with a structural body, protecting the internal mechanical components from damage by the external environment while preventing material from being scattered.

[0060] The driving device adopts a motor and a reducer. The motor is used as the power source, and the reducer reduces the speed and increases the torque to provide stable power for the rotation of the spiral.

[0061] The screw shaft 3 transmits the power of the motor to the screw body 2, and the screw body 2 transports the material in a spiral shape along the pipeline to the discharge port through rotation.

[0062] A cleaning door is provided on the side of the feeding barrel, which is used for daily cleaning and maintenance of the internal structure of the screw feeder, facilitating the maintenance and use of the equipment, and by opening the cleaning door, the screw body 2 can be quickly installed or disassembled.

[0063] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0064] It should be understood that the above description is for illustration and not for limitation. Many embodiments and many applications beyond the examples provided will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of this patent should not be determined with reference to the above description, but rather with reference to the preceding claims and the full scope of equivalents to which such claims are entitled. For the purpose of comprehensiveness, all articles and references, including disclosures of patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein from the preceding claims is not a disclaimer of such subject matter, nor should it be considered that the applicant did not consider such subject matter to be part of the disclosed utility model subject matter.

Claims

1. A quick-release feeding screw, characterized in that: It includes a screw body (2) and a screw shaft (3); The end of the screw body (2) is provided with one of the sleeve (2-2) and the slide groove (3-1), and the front end of the screw shaft (3) is provided with the other of the sleeve (2-2) and the slide groove (3-1); A slot hole (2-1) is provided on the circumferential surface of the sleeve (2-2); the slot hole (2-1) is a through-hole structure, the bottom of which is connected to the interior of the sleeve (2-2); a flat key (1) is fixedly provided in the slot hole (2-1); The front end of the slide groove (3-1) is connected to the end of the screw body (2) or the front end of the screw shaft (3), and the side of the end of the slide groove (3-1) is connected to a mounting groove, and the side of the mounting groove away from the slide groove (3-1) has the same structure as the flat key (1).

2. The quick-release feeding screw according to claim 1, characterized in that: The top surface (1-1) of the flat key (1) is an arc surface, the radius of which is consistent with the outer diameter of the sleeve (2-2). After the flat key (1) is inserted into the slot (2-1), the top surface (1-1) is flush with the circumference of the sleeve (2-2).

3. The quick-release feeding screw according to claim 1, characterized in that: The slot hole (2-1) is a waisted circular hole, the two flat key side surfaces (1-3) of the flat key (1) are vertical planes, the two flat key end surfaces (1-2) of the flat key (1) are semi-cylinders, and the bottom of the flat key (1) is a plane.

4. The quick-release feeding screw according to claim 3, characterized in that: The bottom plane of the flat key (1) is provided with a chamfered angle.

5. The quick-release feeding screw according to claim 3, characterized in that: On a side of the installation groove away from the slide groove (3-1), the bottom surface (3-3) is a plane, the side surface (3-5) of the installation groove is a vertical plane, and the two end surfaces (3-4) of the installation groove are in the shape of a quarter circle.

6. The quick-release feeding screw according to claim 5, characterized in that: The side of the installation groove close to the slide groove (3-1) is an open structure, the bottom surface of which is a transition plane (3-2), and the bottom surface of the slide groove (3-1), the transition plane (3-2) and the bottom surface (3-3) are sequentially connected through edge transitions.

7. The quick-release feeding screw according to claim 1, characterized in that: After the screw body (2) and the screw shaft (3) are installed, the flat key (1) and the installation groove are in interference fit.

8. The quick-release feeding screw according to claim 1, characterized in that: When the sliding groove (3-1) is arranged on the screw body (2), the mounting groove is located on the side of the end of the sliding groove (3-1) facing the forward rotation direction of the screw body (2).

9. The quick-release feeding screw according to claim 1, characterized in that: When the slide groove (3-1) is arranged on the screw shaft (3), the mounting groove is located on the side of the end of the slide groove (3-1) facing the screw shaft (3) or the reverse direction.

10. A feeding machine, characterized in that: The invention comprises a feeding barrel, a driving device and a quick-release feeding screw as claimed in any one of claims 1 to 9, wherein a feeding port is provided at the top of the front end of the feeding barrel and a discharging port is provided at the rear end of the feeding barrel, the driving device is installed at the front end of the feeding barrel, the end of the screw shaft (3) in the quick-release feeding screw is connected to the output end of the driving device, and the screw body (2) is located in the feeding barrel.

Images