Assembled separating knife structure for meat grinder and assembling method

Abstract

The invention discloses an assembled separating knife structure for a meat grinder and an assembling method, the assembled separating knife structure for the meat grinder comprises a knife shaft and a knife rest, and the knife shaft is detachably connected with the knife rest; the cutter shaft is a cylindrical shaft body, the outer surface of the cutter shaft is provided with a spiral arc-shaped groove, one end of the cutter shaft is provided with an installation end, and the installation end is composed of a hexagonal structure and a circular ring structure coaxially connected with the hexagonal structure. The knife rest comprises a knife rest body and at least two sets of separating knives fixedly arranged on the periphery of the knife rest body. The separating knife has the advantages that the knife shaft and the knife rest are arranged to be of a detachable split structure, when a certain part is damaged, corresponding parts can be independently replaced, the whole separating knife does not need to be scrapped, the use and maintenance cost of a user is reduced, and the separating knife is convenient to use and maintain. The spiral arc-shaped groove is matched with a differentiated cutting edge structure, so that the separation efficiency and purity of different textures and tissues are improved.

Description

Technical Field

[0001] This invention relates to the field of food processing machinery technology, and in particular to an assembled separating blade structure and assembly method for a meat grinder. Background Technology

[0002] In existing technologies, meat grinders are among the most commonly used pieces of equipment in meat processing. In the slaughtering and catering industries, different cutting tools are used for different types of meat. These tools are generally driven by an electric drive mechanism with a rotating shaft to rotate and cut. For cutting poultry meat and bones, serrated circular blades are often used, especially for separating the poultry body and legs. However, existing poultry cutting tools, due to their ordinary serrated structure, typically use the same cutting edge for both the skin / meat and bone sections when cutting poultry meat and bones. This often results in clean cuts. However, the bone fragments are numerous, and the blades are covered with a lot of meat and bone scraps, making product quality uncontrollable and affecting overall production efficiency. Furthermore, some food products require the removal of tendons during processing because tendons increase the toughness of the meat, affecting the texture and reducing its edible value. The presence of tendons significantly impacts the quality of meat products. Meat directly obtained from a typical meat grinder contains tendons, which are usually manually selected and then separated in a specialized tendon separator. This method increases the workload and time for workers, hindering efficiency.

[0003] Chinese utility model patent application number 201820169929.0 discloses a meat-bone separator, comprising a body, a circular hole, a motor, a spiral meat grinder, a discharge square hole, a first circular tube, a strip-shaped hole, a strip-shaped scraper, a circular hole roller, a sleeve, a trapezoidal block, a circular plate, a Y-shaped support rod, a circular rod, a trapezoidal through hole, a connecting bearing, and a second circular tube. The spiral meat grinder is disposed within the circular hole, which is located on one side of the body. A discharge square hole is located on the top of the body, with its bottom connected to the circular hole. One end of the spiral meat grinder is rotatably connected to a bearing mounted within the circular hole. A second circular tube is fixedly installed at the end of the circular hole, and one end of the second circular tube is rotatably connected to the first circular tube via a connecting bearing. However, this type of meat-bone separator can only separate meat from bones and cannot automatically separate tendons from the meat, resulting in low separation efficiency. Furthermore, the separating blade and the blade shaft are integrally cast; if any part of this is damaged, the entire separating blade and blade shaft will be damaged, requiring replacement and increasing maintenance costs. Summary of the Invention

[0004] The purpose of this invention is to provide an assembled splitting blade structure and assembly method for a meat grinder.

[0005] To achieve the above objectives, the technical solution proposed by this invention is as follows: An assembled split-blade structure for a meat grinder includes a blade shaft and a blade holder, the blade shaft being detachably connected to the blade holder.

[0006] The cutter shaft is a cylindrical shaft with a spiral arc-shaped groove on its outer surface. One end of the shaft is provided with a mounting end, which consists of a hexagonal structure and a ring structure coaxially connected to it.

[0007] The cutter shaft has a wedge-shaped through hole along the axial direction for cooperating with the output shaft of the meat grinder.

[0008] The tool holder includes a tool holder body and at least two sets of separating blades fixedly disposed around its periphery. The center of the tool holder body is provided with a mounting through hole adapted to the mounting end. The mounting through hole is composed of a hexagonal hole segment that mates with the hexagonal structure and a circular hole segment that mates with the annular structure.

[0009] The separating blade has staggered blades arranged opposite each other on both sides of its blade body, and the cross-section of the separating blade is wedge-shaped.

[0010] In each set of separating blades, the blade edge at one end is a right-angle structure, and the blade edge at the other end is a combination of right angle and chamfer structure.

[0011] The cutter shaft and the cutter holder are detachably connected through a snap-fit ​​engagement between the mounting end and the mounting through hole.

[0012] The end of the separating blade away from the main body of the blade holder is configured as an arc-shaped end that is adapted to the inner cylinder of the meat grinder output end. The blade end of the separating blade has a chamfered structure on the side corresponding to the blade blade.

[0013] The spiral arc-shaped groove is provided in four sets. The four sets of spiral arc-shaped grooves are evenly spaced on the surface of the cutter shaft and extend continuously on the surface of the cutter shaft. The spiral direction is adapted to the forward direction of the meat when the meat grinder is working.

[0014] The number of separating blades is four sets, which are evenly arranged around the circumference of the blade holder body.

[0015] The cross-sectional shape of the wedge-shaped through hole matches the cross-sectional shape of the meat grinder output shaft.

[0016] The separating blade and the blade holder body are integrally cast structures.

[0017] An assembly method for an assembled split-blade structure for a meat grinder includes the following steps: S1: Provides an independent cutter shaft with one end having a mounting end.

[0018] S2: Provides an independent tool holder with a mounting through hole adapted to the mounting end.

[0019] S3: Align the mounting end of the cutter shaft axially and insert it into the mounting through hole of the tool holder, so that the end of the mounting end away from the cutter shaft is flush with the end face of the tool holder. The two are detachably connected by a snap-fit, forming a complete assembled separate cutter structure.

[0020] In step S3, the hexagonal structure of the mounting end is aligned with the hexagonal hole segment of the mounting through hole and inserted until the annular structure enters the circular hole segment, thereby achieving circumferential locking and axial limiting.

[0021] The beneficial effects of this invention are: The blade shaft and blade holder are designed as detachable, separate components. When a part is damaged, the corresponding part can be replaced individually without scrapping the whole thing, reducing the user's usage and maintenance costs. The spiral arc groove can effectively guide, knead, and initially loosen the meat during processing. Combined with the differentiated blade edge structure, it improves the separation efficiency and purity of different textures, enhances the separation effect of meat, tendons, and bones, and improves the processing smoothness. The chamfered structure on the separating blade can guide the material while reducing resistance and stress concentration during operation, reducing the risk of blade breakage, extending the service life of the blade, and improving working safety. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the fit between the cutter shaft and the mounting end of the present invention; Figure 3 This is a schematic diagram of the fit between the cutter shaft and the wedge-shaped through hole of the present invention; Figure 4 This is a schematic diagram of the tool holder structure of the present invention; Figure 5 This is a cross-sectional view of the separating blade of the present invention; Figure 6 This is a schematic diagram of the mounting through hole and the tool holder of the present invention.

[0023] In the diagram: 1. Cutter shaft; 2. Spiral arc groove; 3. Mounting end; 4. Wedge-shaped through hole; 5. Tool holder body; 6. Separating blade; 7. Mounting through hole. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings. An assembled split-blade structure for a meat grinder includes a blade shaft 1 and a blade holder, wherein the blade shaft 1 and the blade holder are detachably connected. A schematic diagram of the overall structure of this invention is shown below. Figure 1 As shown.

[0025] The cutter shaft 1 is a cylindrical shaft with a spiral arc-shaped groove 2 on its outer surface. One end of the shaft has a mounting end 3, which consists of a hexagonal structure and a coaxially connected ring structure. Four sets of spiral arc-shaped grooves 2 are evenly spaced on the surface of the cutter shaft 1 and extend continuously. The spiral direction of the spiral arc-shaped grooves 2 matches the direction of meat feed during the operation of the meat grinder, serving to guide flow and initially separate meat and tendon tissues. The mounting end 3, consisting of the hexagonal structure and the coaxially connected ring structure, is used to assemble and connect the cutter holder and the cutter shaft 1. A schematic diagram of the fit between the cutter shaft 1 and the mounting end 3 is shown below. Figure 2 As shown.

[0026] The blade shaft 1 has a wedge-shaped through hole 4 axially formed inside for engaging with the output shaft of the meat grinder. The cross-sectional shape of the wedge-shaped through hole 4 matches the cross-sectional shape of the meat grinder output shaft. The wedge-shaped through hole 4 is used to discharge the separated bone fragments and fascia through the discharge channel of the meat grinder. A schematic diagram of the engagement between the blade shaft 1 and the wedge-shaped through hole 4 is shown below. Figure 3 As shown.

[0027] The blade holder includes a blade holder body 5 and at least two sets of separating blades 6 fixedly disposed around its periphery. The blade holder body 5 has a central mounting through hole 7 adapted to the mounting end 3. The mounting through hole 7 is composed of a hexagonal hole segment that mates with a hexagonal structure and a circular hole segment that mates with a circular ring structure. In this technical solution, the number of separating blades 6 is four sets, evenly arranged around the periphery of the blade holder body 5. The blade holder body 5 provides mounting support for the separating blades 6. The separating blades 6 are used to separate fascia and bone fragments from the meat and convey the meat to the meat grinder under the action of a mesh plate. Fascia and bone fragments can be discharged from the meat grinder through wedge-shaped through holes 4. A schematic diagram of the blade holder structure of this invention is shown below. Figure 4 As shown.

[0028] The separating blade 6 has staggered blades arranged opposite each other on both sides of its blade body. The cross-section of the separating blade 6 is wedge-shaped. In each set of separating blades 6, the blade edge at one end has a right-angle structure, while the blade edge at the other end has a combination of right angle and chamfer structure. The separating blade 6 achieves different degrees of cutting and pulling of the meat during rotation through its differentiated blade structure. The right-angle blade edge is beneficial for cutting soft tissue, while the chamfered blade edge facilitates sliding into and separating tough fascia and cartilage, thereby improving the efficiency and purity of separating tissues of different textures. A cross-sectional view of the separating blade 6 of this invention is shown below. Figure 5 As shown.

[0029] The tool shaft 1 and the tool holder are detachably connected via a snap-fit ​​engagement between the mounting end 3 and the mounting through hole 7. The mounting through hole 7, composed of hexagonal and circular segments, accommodates the assembly requirements between the tool shaft 1 and the tool holder. The snap-fit ​​engagement between the mounting end 3 and the mounting through hole 7, combining hexagonal and circular segments, ensures a secure connection and convenient assembly / disassembly, preventing loosening and corrosion that may occur with threaded connections. A schematic diagram of the engagement between the mounting through hole 7 and the tool holder is shown below. Figure 6 As shown.

[0030] The end of the separating blade 6 furthest from the blade holder body 5 is designed as an arc-shaped end that fits into the inner cylinder of the meat grinder output end. The blade end of the separating blade 6 has a chamfered structure on the side corresponding to the blade blade. The arc-shaped end of the separating blade 6 allows it to fit better with the contour of the inner cylinder of the meat grinder output end, reducing unnecessary gaps and friction, preventing meat blockage, and making the operation smoother. The chamfered structure on the side of the blade end of the separating blade 6 and the chamfered design of the blade blade not only guide the material, but also reduce resistance and stress concentration during operation, reduce the risk of blade breakage, thereby extending the service life of the blade and improving the safety of the working process.

[0031] An assembly method for an assembled split-blade structure for a meat grinder includes the following steps: S1: Provides an independent cutter shaft 1, which has one end with a mounting end 3.

[0032] S2: Provides an independent tool holder with mounting through holes 7 that are compatible with the mounting end 3.

[0033] S3: Align the mounting end 3 of the cutter shaft 1 along the axial direction and insert it into the mounting through hole 7 of the tool holder, so that the end of the mounting end away from the cutter shaft 1 is flush with the end face of the tool holder. The two are detachably connected by a snap-fit, forming a complete assembled separate cutter structure.

[0034] In step S3, the hexagonal structure of the mounting end 3 is aligned with the hexagonal hole segment of the mounting through hole 7 and inserted until the annular structure enters the circular hole segment, thereby achieving circumferential locking and axial limiting.

[0035] The modular design of the cutter shaft 1 and the tool holder allows end users or maintenance personnel to quickly and accurately replace or reassemble the cutter shaft 1 and the tool holder, thereby reducing maintenance costs and avoiding overall scrapping. Furthermore, the standardized assembly method ensures the stability of product performance and avoids eccentricity, shaking, or efficiency reduction caused by improper assembly.

[0036] This method eliminates the need for tools and repeated tightening required for thread tightening, as well as the need for additional angle calibration. It only requires simple axial alignment and insertion, and the connection is achieved instantly through snap-fit, which greatly shortens the assembly and disassembly time and improves operational efficiency.

[0037] In this technical solution, the various components of the separating blade can be cleaned more thoroughly, avoiding the hard-to-clean dead corners found in traditional integrated or complex connection structures, and better meeting the hygiene requirements of food processing equipment.

[0038] Among them, the tool shaft 1 and the tool holder can be manufactured and inspected independently on different production lines. The inventory of these two core components can be flexibly managed, and they can be quickly combined into the final product according to market demand, which improves the responsiveness and flexibility of the supply chain.

[0039] Working principle: During operation, the separating blade 6 is mounted on the output end of the meat grinder and fits against the discharge screen. The discharge screen has several evenly spaced discharge holes, and a guide groove is provided on the side near the separating blade 6. During operation, the meat grinder auger pushes the meat to the separating blade 6. The separating blade 6 separates the fascia and bone fragments from the meat and further pushes the meat to discharge it from the meat grinder through the discharge holes on the discharge screen. The fascia and bone fragments are discharged into the discharge channel through the spiral arc groove 2 on the side of the blade shaft 1 along the guide groove on the discharge screen and are discharged from the meat grinder through the discharge channel. This separating blade 6 enhances the separation effect and processing efficiency through the combination of spiral groove guidance and differentiated cutting edge. Through wedge connection, clamping fit, arc end, and chamfer fit, the reliability, adaptability, and durability of the structure are comprehensively improved. When the blade shaft 1 or a part of the blade holder is damaged, the corresponding part can be replaced individually without the need for the whole machine to be scrapped.

[0040] The beneficial effects of this invention are that the blade shaft and blade holder are designed as detachable, separate structures. When a certain part is damaged, the corresponding part can be replaced individually without the need for complete scrapping, thus reducing the user's usage and maintenance costs. The spiral arc-shaped groove can effectively guide, knead, and initially loosen the meat during processing. Combined with the differentiated blade edge structure, it improves the separation efficiency and purity of different textures, enhances the separation effect of meat, tendons, and bones, and improves the processing smoothness. The chamfered structure on the separating blade can guide the material while reducing resistance and stress concentration during operation, reducing the risk of blade breakage, extending the service life of the blade, and improving working safety.

[0041] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. An assembled separating blade structure for a meat grinder, characterized in that, It includes a cutter shaft (1) and a tool holder, wherein the cutter shaft (1) is detachably connected to the tool holder; The cutter shaft (1) is a cylindrical shaft with a spiral arc groove (2) on its outer surface and a mounting end (3) at one end. The mounting end (3) is composed of a hexagonal structure and a ring structure coaxially connected to it. The cutter shaft (1) has a wedge-shaped through hole (4) axially provided inside for cooperating with the output shaft of the meat grinder; The tool holder includes a tool holder body (5) and at least two sets of separating blades (6) fixedly disposed around its periphery. The center of the tool holder body (5) is provided with a mounting through hole (7) that is adapted to the mounting end (3). The mounting through hole (7) is composed of a hexagonal hole segment that mates with a hexagonal structure and a circular hole segment that mates with a ring structure. The separating blade (6) has staggered blades arranged opposite to each other on both sides of the blade body, and the cross section of the separating blade (6) is wedge-shaped.

2. The assembled separating blade structure for a meat grinder as described in claim 1, characterized in that, In each set of separating blades (6), the blade edge at one end is a right-angle structure, and the blade edge at the other end is a combination of right angle and chamfer structure.

3. The assembled separating blade structure for a meat grinder as described in claim 1, characterized in that, The cutter shaft (1) and the tool holder are detachably connected by the mounting end (3) and the mounting through hole (7).

4. The assembled separating blade structure for a meat grinder as described in claim 1, characterized in that, The end of the separating blade (6) away from the blade holder body (5) is configured as an arc-shaped end that is adapted to the inner cylinder of the meat grinder output end. The blade end of the separating blade (6) has a chamfered structure on the side corresponding to the blade blade.

5. The assembled separating blade structure for a meat grinder as described in claim 1, characterized in that, The spiral arc groove (2) is provided in four sets. The four sets of spiral arc grooves (2) are evenly spaced on the surface of the cutter shaft (1) and extend continuously on the surface of the cutter shaft (1). The spiral direction is adapted to the forward direction of the meat when the meat grinder is working.

6. The assembled separating blade structure for a meat grinder as described in any one of claims 1 to 5, characterized in that, The number of the separating blades (6) is four sets, which are evenly arranged around the circumference of the blade holder body (5).

7. The assembled separating blade structure for a meat grinder as described in any one of claims 1 to 5, characterized in that, The cross-sectional shape of the wedge-shaped through hole (4) matches the cross-sectional shape of the meat grinder output shaft.

8. The assembled separating blade structure for a meat grinder as described in any one of claims 1 to 5, characterized in that, The separating blade (6) and the blade holder body (5) are integrally cast structures.

9. A method for assembling a modular separating blade structure for a meat grinder according to any one of claims 1 to 8, characterized in that, Includes the following steps: S1: Provide an independent cutter shaft (1) having one end with a mounting end (3); S2: Provide an independent tool holder having a mounting through hole (7) adapted to the mounting end (3); S3: Align the mounting end (3) of the cutter shaft (1) along the axial direction and insert it into the mounting through hole (7) of the tool holder, so that the end of the mounting end away from the cutter shaft (1) is flush with the end face of the tool holder. The two are detachably connected by a snap-fit, forming a complete assembled separate cutter structure.

10. The assembly method according to claim 9, characterized in that, In step S3, the hexagonal structure of the mounting end (3) is aligned with the hexagonal hole segment of the mounting through hole (7) and inserted until the annular structure enters the circular hole segment, thereby achieving circumferential locking and axial limiting.

Images