Chalk mould and production line

Abstract

The application discloses chalk mould and production line, belongs to chalk production processing technical field;It includes at least two module, the module includes two half moulds and clamping piece, the half mould side is equipped with a plurality of mould cavities, two half moulds are away from the side of the mould cavity and abut each other;The clamping piece is arranged on the side of the half mould adjacent to the mould cavity and is connected with two half moulds respectively, so as to fix two half moulds;The mould cavities between adjacent module are connected to form a plurality of forming cavities for pouring slurry. The application does not need each half mould to be connected with the production line through the connecting structure, and one set of connecting structure is used for connecting two half moulds with the production line, so that the structure is simplified, the structural stability is good, and the failure rate can be reduced.

Description

Technical Field

[0001] This invention relates to the field of chalk production and processing technology, and in particular to a chalk mold and production line. Background Technology

[0002] Chalk is a widely used tool in daily life, generally used for writing on blackboards. The chalk currently used in China is mainly composed of calcium sulfate (commonly known as gypsum), or contains a small amount of calcium oxide.

[0003] Current chalk production methods typically use gypsum powder as a raw material, which is liquefied by adding water, poured into a special mold to solidify, and then dried after demolding to obtain the finished product. This method of chalk production is inefficient, cannot automate chalk production, and cannot achieve continuous production, which is not conducive to the mass production of chalk. Summary of the Invention

[0004] In view of this, it is necessary to provide a chalk mold and production line to solve the problem of the difficulty in continuous production of existing chalk.

[0005] In a first aspect, the present invention provides a chalk mold, comprising at least two modules, each module comprising two half-molds and a clamping member, wherein one side of each half-mold is provided with a plurality of mold cavities, and the sides of the two half-molds away from the mold cavities abut against each other; the clamping member is disposed on the side of the half-mold adjacent to the mold cavity and is respectively connected to the two half-molds for fixing the two half-molds; the mold cavities between adjacent modules are joined to form a plurality of molding cavities for pouring chalk paste.

[0006] Furthermore, the molding cavity is a rotating body of arbitrary shape, and the two mold cavities that make up the molding cavity are symmetrically arranged along the mating surfaces of the two modules.

[0007] Furthermore, a first docking unit is provided between the two half-molds of the same module. The first docking unit includes a first docking hole and a first connector. The first docking hole is opened on the side of one half-mold that is relatively far away from the mold cavity, and the first connector is disposed on the side of the other half-mold that is relatively far away from the mold cavity. The first connector is inserted into the first docking hole.

[0008] Furthermore, a second docking unit is provided between two adjacent modules. The second docking unit includes a second docking hole and a second connector. The second docking hole is opened on the side of one module's half-mold that is relatively close to the mold cavity. The second connector is disposed on the side of the other module's half-mold that is relatively close to the mold cavity. The second connector is inserted into the second docking hole.

[0009] Furthermore, the clamping member includes a middle part and two clamping parts. The middle part is integrally connected with the clamping parts. The two clamping parts abut against the upper and lower ends of the two half molds respectively. The middle part abuts against the sides of the two half molds. The two clamping members are symmetrically arranged on both sides of the module to fix the two half molds.

[0010] Furthermore, the module also includes a fastening unit, which includes a screw hole formed on the clamping part and a screw connector screwed into the screw hole, the screw connector abutting against the half mold through the screw hole.

[0011] Secondly, the present invention provides a chalk production line, including a chalk mold and a conveying assembly. The conveying assembly includes a rotatable annular conveyor, and a plurality of the modules are arranged in a linear array and respectively connected to the annular conveyor. The annular conveyor can drive the modules to move. The modules have a mold-closed state and a mold-opening state. In the mold-closed state, two adjacent modules abut and close together to form a molding cavity. In the mold-opening state, the ends of two adjacent modules that are relatively away from the annular conveyor open to open the molding cavity.

[0012] Furthermore, the annular conveyor includes a parallel region and a curved region. The annular conveyor is horizontally arranged in the parallel region and bent in the curved region to allow the annular conveyor to change direction. Adjacent modules abut against each other in the parallel region to form a mold-closing state, and adjacent modules abut against each other in the curved region to separate to form a mold-separating state.

[0013] Furthermore, the two annular conveyor components are spaced apart, and the two sides of the module are respectively connected to the two annular conveyor components; the annular conveyor components are transmission chains or conveyor belts.

[0014] Furthermore, the conveying assembly also includes a frame and rotating components, at least two of the rotating components are connected to the frame, and the annular conveying component is sleeved on the rotating components, and the rotating components can drive the annular conveying component to rotate.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) A chalk mold module of the present invention comprises two half-molds, each half-mold having multiple cavities on one side. The sides of the two half-molds away from the cavities abut against each other, forming a composite module with cavities on both sides. Compared to a single two-half-mold forming a molding cavity, the composite module can be linearly combined and abutted against each other for fixation, which is beneficial for large-scale chalk production on the production line. In the composite module, each half-mold does not need to be connected to the production line through a connecting structure; every two half-molds use a set of connecting structures to connect to the production line, simplifying the structure, improving structural stability, and reducing the failure rate.

[0016] (2) A chalk production line of the present invention includes a chalk mold and a conveying assembly. The conveying assembly has a rotatable annular conveyor, and multiple modules are arranged in a linear array. Each module is connected to the annular conveyor, and the annular conveyor can drive the modules to rotate cyclically. The modules have a closed state and a open state. In the closed state, two adjacent modules abut and close together, and the docking holes and docking posts in the second docking unit dock with each other. The two half molds close together to form a molding cavity, into which chalk slurry can be poured. In the open state, the ends of two adjacent modules that are relatively far from the annular conveyor open, opening the molding cavity, and the formed chalk can be ejected from the molding cavity, completing the automatic unloading of chalk. The chalk production line adopts an assembly line method to produce chalk, and the chalk production efficiency is greatly improved. The modules in the production line can unload in the open state without the need for unloading equipment, resulting in a higher degree of automation and further improved production efficiency. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 is a three-dimensional structural diagram of the module in this invention; Figure 2 This is an exploded view of the module in this invention; Figure 3 This is a schematic diagram of the structure of the half-mold in this invention; Figure 4 This is a schematic diagram of the production line structure in this invention; Figure 5 This is a three-dimensional structural diagram of multiple modules in the curved area of ​​the annular conveyor in this invention; Figure 6 This is a schematic diagram of the planar structure of multiple modules in the curved area of ​​the annular conveyor in this invention.

[0018] In the diagram, 100-module, 110-half mold, 111-mold cavity, 120-clamping component, 121-middle part, 122-clamping part, 130-forming cavity, 140-first docking unit, 150-second docking unit, 160-fastening unit, 161-screw hole, 162-screw connector; 200-Conveying assembly, 210-Circular conveyor, 211-Parallel zone, 212-Bending zone, 220-Frame, 230-Rotating component. Detailed Implementation

[0019] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0020] In this embodiment, a chalk mold and production line are proposed. The original pattern of combining two half-molds 110 into one molding cavity 130 is changed. The two half-molds 110 are arranged back to back to form a composite module 100. This facilitates the docking of adjacent composite modules 100 to form the molding cavity 130, reduces the connection points between the mold and the production line, enhances structural stability, and improves production efficiency.

[0021] Please see Figures 1 to 3 This embodiment of a chalk mold includes at least two modules 100. Each module 100 includes two half-molds 110 and a clamping member 120. Multiple mold cavities 111 are formed on one side of each half-mold 110. The sides of the two half-molds 110 away from the mold cavities 111 abut against each other, forming a composite module 100 with mold cavities 111 on both sides. The clamping member 120 is disposed on the side of the half-mold 110 adjacent to the mold cavities 111, and is connected to both half-molds 110 respectively, thus fixing the two half-molds 110 and preventing the composite module 100 from falling apart. The mold cavities 111 between adjacent modules 100 are joined to form a molding cavity 130, into which chalk paste can be poured to mass-produce chalk.

[0022] Compared to a single two-part mold 110 forming a molding cavity 130, the composite module 100 can be linearly combined and fixed together, which is beneficial for large-scale chalk production on a production line. In the composite module 100, each half-mold 110 does not need to be connected to the production line through a connecting structure; every two half-molds 110 use a set of connecting structures to connect to the production line, which simplifies the structure, improves structural stability, and reduces the failure rate.

[0023] It should be noted that the molding cavity 130 is a rotating body of any shape, such as a "carrot" shape, a sharpened "pencil" shape, a sphere, a common frustum or a cylinder, etc. The two mold cavities 111 that make up the molding cavity 130 are symmetrically arranged along the mating surface of the two modules 100. When the two adjacent modules 100 are opened, the molded chalk can be automatically demolded.

[0024] In some embodiments, please refer to Figures 1 to 3A first docking unit 140 is provided between the two half-molds 110 of the same module 100. The first docking unit 140 includes a first docking hole and a first mating connector. The first docking hole is located on the side of one half-mold 110 that is relatively far from the mold cavity 111, i.e., the back side of the mold cavity 111 of the other half-mold 110. The first mating connector is located on the side of the other half-mold 110 that is relatively far from the mold cavity 111, i.e., the back side of the mold cavity 111 of the other half-mold 110. The first mating connector is inserted into the first docking hole. The arrangement of the first mating connector and the first docking hole can position the two half-molds 110 so that the back sides of the two mold cavities 111 completely overlap, which can prevent the half-molds 110 from being misaligned and thus interfering with the docking between the mold cavities 111 of different modules 100. At the same time, the arrangement of the first mating connector and the first docking hole can strengthen the connection between the two half-molds 110, preventing the half-molds 110 from shifting along the docking plane and thus loosening.

[0025] In the specific implementation process, the first mating hole and the first joint are set in a group, generally symmetrically arranged on both sides of the half mold 110, which can further enhance the positioning accuracy, improve the connection strength, and prevent the two from shifting.

[0026] In some embodiments, please refer to Figures 1 to 3 A second docking unit 150 is provided between two adjacent modules 100. The second docking unit 150 includes a second docking hole and a second connector. The half-mold 110 of one module 100 is located on the side of its half-mold 110 that is relatively close to the mold cavity 111, i.e., on the same side of the mold cavity 111 of the half-mold 110 of the other module 100. The second connector is inserted into the second docking hole. The second connector and the second docking hole can position the two modules 100, making the docking of the mold cavities 111 of the two modules 100 more precise, thereby avoiding misalignment of the mold cavities 111. At the same time, the second connector and the second docking hole can strengthen the connection between the two modules 100, preventing the modules 100 from shifting along the docking plane and becoming loose.

[0027] In practice, the second mating holes and the second mating joints are arranged in groups, generally symmetrically on both sides of the half mold 110. This further enhances positioning accuracy and ensures the shape accuracy of the molding cavity 130. It also improves connection strength and prevents the two modules 100 from shifting.

[0028] In some embodiments, please refer to Figure 1 and Figure 2The clamping member 120 includes a middle part 121 and two clamping parts 122. The middle part 121 and the clamping parts 122 are integrally connected, and the middle part 121 and the two clamping parts 122 form a U-shaped clamping structure. The two clamping parts 122 abut against the upper and lower ends of the two half molds 110 respectively, and the middle part 121 abuts against the sides of the two half molds 110. The two clamping members 120 are symmetrically arranged on both sides of the module 100. The clamping members 120 can fix the two half molds 110 of the same module 100 from both sides, so that the projections of the two half molds 110 relative to the other half mold 110 are completely superimposed. While fixing the two half molds 110, the clamping members 120 can also limit and position the two half molds 110.

[0029] In some embodiments, the module 100 further includes a fastening unit 160, which includes a screw hole 161 and a screw connector 162. The screw hole 161 is formed on the clamping part 122, and the screw connector 162 is screwed into the screw hole 161. The middle part of the screw connector 162 is threadedly connected to the screw hole 161, and the end of the screw connector 162 abuts against the half mold 110 to further fix the half mold 110 and prevent the clamping part 120 from falling off the half mold 110.

[0030] It should be noted that the top of the mold cavity 111 has an opening that connects to the outside. The openings of the two half molds 110 combine to form a pouring port, through which powder paste can be poured into the molding cavity 130. The molding cavity 130 can be cylindrical, frustum-shaped, or a column with a conical top, thereby forming chalk of different shapes.

[0031] Please see Figures 4 to 6 A chalk production line includes a chalk mold and a conveying assembly 200. The conveying assembly 200 has a rotatable annular conveyor 210. Multiple modules 100 are arranged in a linear array, each module 100 being connected to the annular conveyor 210. The annular conveyor 210 can drive the modules 100 to rotate cyclically. The modules 100 have a closed mold state and a open mold state. In the closed mold state, adjacent modules 100 abut together, and the docking holes and docking posts in the second docking unit 150 dock together, with the two half molds 110 closing to form a molding cavity 130 into which chalk paste can be poured. In the open mold state, the ends of adjacent modules 100 that are relatively away from the annular conveyor 210 open, opening the molding cavity 130, and the formed chalk can be ejected from the molding cavity 130, completing the automatic unloading of chalk. The chalk production line adopts an assembly line method to produce chalk, significantly improving chalk production efficiency. Module 100 in the production line can be unloaded in the mold-separated state without the need for unloading equipment, resulting in a higher degree of automation and further improved production efficiency.

[0032] It should be noted that please refer to section 4 to 5. Figure 6The annular conveyor 210 includes a parallel area 211 and a curved area 212. The annular conveyor 210 is approximately racetrack-shaped. The annular conveyor 210 is horizontally arranged in the parallel area 211, and adjacent modules 100 abut against each other in the parallel area 211 to form a closed mold state. The annular conveyor 210 is bent in the curved area 212 to form a reversible semicircle. In the curved area 212, the angular velocities at both ends of the module 100 are the same, but the linear velocities are different. The ends of two adjacent modules 100 that are relatively far away from the annular conveyor 210 open, opening the forming cavity 130 and forming a mold-parting state, enabling automatic material feeding.

[0033] In some embodiments, please refer to Figure 4 Two annular conveyor members 210 are spaced apart, and the two sides of the module 100 are respectively connected to the two annular conveyor members 210. At least two protrusions are provided in the middle part 121 of the clamping member 120, and the protrusions can be fixedly connected to the annular conveyor members 210. The arrangement of two annular conveyor members 210 can further improve the connection strength between the module 100 and the annular conveyor members 210, ensure the stability of the module 100 movement, and prevent the module 100 from shaking during movement.

[0034] In specific implementation, the annular conveyor 210 is a drive chain or conveyor belt, with two drive chains or conveyor belts set on both sides of the module 100, thereby driving the module 100 to move. As a further embodiment, the annular conveyor 210 is a drive chain, with each link connected to a module 100, which facilitates docking and disengagement between modules 100, and realizes demolding and mold closing between half-molds 110.

[0035] In some embodiments, please refer to Figures 4 to 6 The conveying assembly 200 also includes a frame 220 and rotating parts 230. The frame 220 is a base placed on the ground. At least two rotating parts 230 are connected to the frame 220. The rotating parts 230 are specifically gears or pulleys. The two rotating parts 230 are arranged at intervals relative to each other. An annular conveying part 210 is sleeved on the two rotating parts 230. The rotating parts 230 are connected to a servo motor through a rotating shaft. The servo motor can drive the rotating parts 230 to rotate, thereby driving the module 100 to move and complete the automatic operation of the chalk production line.

[0036] Workflow: First, multiple modules 100 are assembled using half-mold 110 and clamping member 120. Then, the multiple modules 100 are linearly mounted on an annular conveyor 210, and a grouting device is installed on one side above the annular conveyor 210. As the annular conveyor 210 operates, the modules 100 in the mold-closed state complete the grouting of the molding cavity 130 at the grouting device. Next, the modules 100 in the mold-closed state travel in the parallel zone 211 for a period of time until the grout solidifies. Finally, the modules 100 in the mold-closed state move to the bending zone 212, where adjacent modules 100 abut and separate to form a mold-separation state, and the chalk in the molding cavity 130 automatically detaches.

[0037] In this application, a continuous production line is used to produce chalk, which significantly improves the production efficiency. The module 100 in the production line can be unloaded in the mold-opening state, eliminating the need for unloading equipment, thus increasing the degree of automation and further improving production efficiency.

[0038] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of the present invention.

Claims

1. A chalk production line, characterized in that, The system includes modules and a conveying assembly. Each module comprises two half-molds and a clamping member. Multiple mold cavities are formed on one side of each half-mold, and the sides of the two half-molds furthest from the mold cavities abut against each other. The clamping member is located on the side of each half-mold adjacent to the mold cavities and is connected to both half-molds to fix them in place. The mold cavities of adjacent modules are joined to form multiple molding cavities for slurry injection. The conveying assembly includes a rotatable annular conveyor. Multiple modules are arranged in a linear array and connected to the annular conveyor, which can move the modules. The modules have a closed state and a separated state. In the closed state, adjacent modules abut against each other to form a molding cavity. In the separated state, the ends of adjacent modules furthest from the annular conveyor open, opening the molding cavity.

2. The chalk production line according to claim 1, characterized in that, The molding cavity is a rotating body of arbitrary shape, and the two mold cavities that make up the molding cavity are symmetrically arranged along the mating surfaces of the two modules.

3. A chalk production line according to claim 1, characterized in that, A first docking unit is provided between the two half molds of the same module. The first docking unit includes a first docking hole and a first connector. The first docking hole is opened on the side of one half mold that is relatively far away from the mold cavity. The first connector is disposed on the side of the other half mold that is relatively far away from the mold cavity. The first connector is inserted into the first docking hole.

4. A chalk production line according to claim 1 or 3, characterized in that, A second docking unit is provided between two adjacent modules. The second docking unit includes a second docking hole and a second connector. The second docking hole is opened on the side of the half mold of one module that is relatively close to the mold cavity. The second connector is disposed on the side of the half mold of the other module that is relatively close to the mold cavity. The second connector is inserted into the second docking hole.

5. A chalk production line according to claim 1, characterized in that, The clamping member includes a middle part and two clamping parts. The middle part is integrally connected with the clamping parts. The two clamping parts abut against the upper and lower ends of the two half molds respectively. The middle part abuts against the sides of the two half molds. The two clamping members are symmetrically arranged on both sides of the module to fix the two half molds.

6. A chalk production line according to claim 5, characterized in that, The module also includes a fastening unit, which includes a screw hole on the clamping part and a screw connector screwed into the screw hole. The screw connector abuts against the half mold through the screw hole.

7. A chalk production line according to claim 1, characterized in that, The annular conveyor includes a parallel area and a curved area. The annular conveyor is horizontally arranged in the parallel area and bent in the curved area to allow the annular conveyor to change direction. Adjacent modules abut against each other in the parallel area to form a closed mold state, and adjacent modules abut against each other in the curved area to separate to form a separated mold state.

8. A chalk production line according to claim 1, characterized in that, The two annular conveyor components are spaced apart, and the two sides of the module are respectively connected to the two annular conveyor components; the annular conveyor components are drive chains or conveyor belts.

9. A chalk production line according to claim 1, characterized in that, The conveying assembly also includes a frame and rotating components. At least two of the rotating components are connected to the frame. The annular conveying component is sleeved on the rotating components, and the rotating components can drive the annular conveying component to rotate.

Images