Walking / running machine with integrated base and manufacturing method of integrated base

Abstract

The invention relates to the technical field of treadmills, in particular to a walking / running machine with an integrated base and a manufacturing method of the integrated base. A walking / running machine with an integrated base comprises the integrated base, a running plate, a running belt, a motor, an electric controller and a roller, a mounting part for mounting the running plate, the running belt, the motor, the electric controller and the roller is preset in the integrated base, and the base comprises a cross beam, a longitudinal beam and a mounting cavity shell arranged between the cross beam and the longitudinal beam. The cross beams, the longitudinal beams and the installation cavity shell are all made of reinforced plastics and are integrally formed in an injection molding mode. The invention has the advantages of simplicity in manufacturing, higher structural strength and light overall weight, thereby reducing the logistics cost.

Description

Technical Field

[0001] The present invention relates to the technical field of treadmills, and in particular to a walking / treadmill with an integrated base and a method for manufacturing the integrated base. Background Art

[0002] The existing treadmill (or walking machine) is composed of a main frame as a base, a running platform installed on the main frame, handrails and a control platform. The running platform is fixed parallel to the base to form an exercise plane for walking or running.

[0003] The main frame of the existing treadmill base is usually composed of two cross beams made of metal and a longitudinal beam connecting the two cross beams, and the cross beams and the longitudinal beams are connected by a welding process.

[0004] The assembly process of the base connected by welding is complicated and requires welders to have skilled welding technology; and the different welding levels also hinder the automated and standardized production of the base. Therefore, it is necessary to design a method for making an integrated walking machine / treadmill base to solve the above problems. Summary of the invention

[0005] In order to solve the deficiencies in the prior art, a walking / treadmill with an integrated base which is simple to manufacture and has higher structural strength is provided.

[0006] The present invention is implemented by the following technical scheme: a walking / treadmill with an integrated base, comprising an integrated base, a running board, a running belt, a motor, an electronic control and a roller, wherein an installation portion for installing the running board, the running belt, the motor, the electronic control and the roller is preset in the integrated base, and the base comprises a crossbeam, a longitudinal beam and an installation cavity shell arranged between the crossbeam and the longitudinal beam, and at least the longitudinal beam and the installation cavity shell are both manufactured by one-piece injection molding of reinforced plastic with a preset mixing ratio.

[0007] Among them, at least the longitudinal beam and the installation cavity shell are both made of reinforced plastic and are integrally injection molded, which means that the cross beam can be integrally injection molded with the longitudinal beam and the installation cavity shell, and the cross beam can also be manufactured separately, for example, the cross beam is installed on the longitudinal beam using steel or aluminum alloy material.

[0008] The above scheme makes the crossbeam, longitudinal beam and installation cavity shell of the base all adopt reinforced plastic and are set by integral injection molding. Compared with the existing welding process, the manufacturing and assembly is simpler, and large-scale integral manufacturing can be carried out with higher production efficiency. The base material is made of plastic material, which has the advantages of lower cost, lighter weight, and easier transportation and handling. The walking / treadmill base is designed as an integrated molding structure in structure, which overcomes the shortcomings of the complex structure of the existing walking / treadmill base, eliminates the high production cost of welding and assembly, can reduce pollution to the environment and has lower skill requirements for personnel, and has the advantages of simple assembly and low manufacturing cost.

[0009] Preferably, the reinforced plastic comprises: polypropylene and glass fiber, or polyamide 6 and glass fiber, or polyamide 66 and glass fiber; the glass fiber comprises long glass fiber and short glass fiber.

[0010] Glass fibers are added to the plastic materials of polypropylene, polyamide 6 or polyamide 66 to improve the toughness of the overall plastic, thereby improving the toughness of the base.

[0011] Preferably, the preset mixing ratio of the reinforced plastic is: the glass fiber accounts for greater than or equal to 15%, and has at least one of the following characteristics: the tensile strength measured by the test method for the tensile properties of plastics is greater than or equal to 50Mpa; the bending strength measured by the test method for the bending properties of plastics is greater than or equal to 80Mpa; the cantilever beam notched impact strength measured by the test method for the Izod impact strength of plastics is greater than or equal to 8kJ / m 2 .

[0012] Preferably, the reinforced plastic comprises: polyolefin and stiffening filler, or polyamide and stiffening filler; the stiffening filler comprises one or more of glass fiber, talcum powder, calcium carbonate, barium sulfate, wollastonite, and whisker.

[0013] By mixing stiffening fillers into polyolefin or polyamide plastics, the rigidity of the plastic is increased, thereby improving the rigidity of the base.

[0014] Preferably, the preset mixing ratio of the reinforced plastic is: the proportion of the reinforcing filler is greater than or equal to 5%, and it has at least one of the following characteristics: the bending strength measured by the test method of the plastic bending performance is greater than or equal to 25Mpa; the cantilever beam notched impact strength measured by the test method of the plastic Izod impact strength is greater than or equal to 3kJ / m 2 .

[0015] Preferably, the reinforced plastic comprises: acrylonitrile-butadiene-styrene copolymer, or acrylonitrile-butadiene-styrene copolymer and polycarbonate; wherein the preset mixing ratio of the reinforced material of the mixture of acrylonitrile-butadiene-styrene copolymer and polycarbonate is: the proportion of polycarbonate is greater than or equal to 30%, and it has at least one of the following characteristics: the tensile strength measured according to the test method of the tensile properties of plastics is greater than or equal to 50Mpa; the bending strength measured according to the test method of the bending properties of plastics is greater than or equal to 70Mpa; the Charpy notched impact strength measured according to the test method of the impact resistance of plastics is greater than or equal to 30kJ / m 2 .

[0016] Preferably, the longitudinal beam is wrapped with a metal reinforcement extending along the length direction of the longitudinal beam, the metal reinforcement is provided with a plurality of through holes spaced apart along its length direction and penetrating the wall of the metal reinforcement, the metal reinforcement is provided with a plurality of convex strips or protrusions which are recessed inwardly on one side of the wall of the metal reinforcement and protruded outwardly on the other side.

[0017] The strength of the longitudinal beam can be further enhanced by metal reinforcements, thereby strengthening the strength of the entire base. The metal reinforcements can be made of iron, steel, or aluminum alloy. The longitudinal beam wrapped with metal reinforcements means that the metal reinforcements are placed in the mold and injection molded together with the longitudinal beam during injection molding. Through the arrangement of through holes, convex strips and protrusions, the metal reinforcements are embedded in the longitudinal beam more firmly and the contact with the longitudinal beam is closer.

[0018] Preferably, the longitudinal beams and the cross beams are densely covered with reinforcing ribs integrally formed with the cross beams and the longitudinal beams, and the longitudinal beams and the cross beams are integrally injection-molded using the same reinforced plastic.

[0019] The strength of the cross beam and the longitudinal beam is further enhanced by setting the reinforcing ribs, thereby strengthening the strength of the entire base. At the same time, the reinforcing ribs can reduce the weight of the entire base while ensuring a certain strength. The reinforcing ribs are formed during the integral injection molding.

[0020] A method for manufacturing the above-mentioned integrated base comprises the following steps in sequence:

[0021] S1: The reinforced plastics are mixed and heated according to their respective proportions, and granulated by a granulator;

[0022] S2: The plastic pellets are heated and melted by the injection molding machine and injected into the injection mold after the mold is clamped;

[0023] S3: After the injection of plastic particles is completed, the pressure is maintained;

[0024] S4: Cooling the injection mold to solidify the melt into a base in the injection mold cavity;

[0025] S5: After cooling to room temperature, the injection mold is opened and the base is demoulded.

[0026] Preferably, in the step S2, before the injection molding machine injects the plastic particles into the injection mold, the metal reinforcement is placed in the cavity of the injection mold corresponding to the crossbeam.

[0027] Placing the metal reinforcement in the cavity of the injection mold corresponding to the longitudinal beam allows the plastic material to wrap the metal reinforcement, which has better strength and does not require subsequent processing, making it more convenient.

[0028] In the above scheme, the reinforcing plastics are mixed according to their respective proportions, which means that each reinforcing plastic is mixed according to its respective proportions. For example, if the reinforcing plastic is a mixture of polypropylene and glass fiber, the glass fiber is 15% and the polypropylene is 85%. The reinforcing plastic can be a mixture of polypropylene and glass fiber, a mixture of polyamide 6 or polyamide 66 and glass fiber, a mixture of acrylonitrile-butadiene-styrene copolymer and polycarbonate, and acrylonitrile-butadiene-styrene copolymer alone. Placing the metal reinforcement in the cavity of the injection mold corresponding to the longitudinal beam allows the reinforced plastic to wrap the metal reinforcement, which has better strength; and does not require subsequent processing, which is more convenient.

[0029] Compared with the prior art, the present invention has the advantages of being simpler to manufacture and assemble than the existing welding process, being able to be manufactured on a large scale as a whole, having higher production efficiency, and using plastic material as the base material, having the advantages of lower cost, lighter weight, and being convenient for transportation and handling, etc.; by structurally designing the walking / treadmill base as an integrated molding structure, the shortcomings of the existing walking / treadmill base having a complex structure are overcome, the high production cost of welding and assembly is eliminated, pollution to the environment can be reduced, and the skill requirements for personnel are relatively low, and the invention has the advantages of simple assembly and low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the present invention;

[0031] Figure 2 for Figure 1 Exploded diagram of

[0032] Figure 3 This is a schematic diagram of the structure after removing the cover and running belt;

[0033] Figure 4 is a schematic diagram of the structure of the base;

[0034] Figure 5 It is a schematic diagram of the structure below the base;

[0035] Figure 6 It is a schematic diagram of the structure of the base and the metal reinforcement;

[0036] Figure 7 is a schematic diagram of the structure of a metal reinforcement;

[0037] Figure 8 This is an enlarged view of the reinforcement rib of the longitudinal beam;

[0038] Fig. 9 This is an enlarged view of the reinforcement rib of the beam;

[0039] Fig.10 This is the test data diagram of PP and GF mixed materials;

[0040] Fig.11 This is the test data diagram of PP and GF mixed materials;

[0041] Fig.12 This is the test data diagram of PA6 and GF mixed materials;

[0042] Fig.13 This is the test data diagram of PA6 and GF mixed materials;

[0043] Fig.14 This is the test data diagram of ABS and PC mixed materials;

[0044] Fig.15 This is the test data diagram of mixed materials.

[0045] Figure numbers: 1. base; 11. longitudinal beam; 12. cross beam; 13. mounting cavity shell; 21. cover shell; 22. running belt; 23. side panel; 24. running board; 25. roller; 26. motor; 27. electronic control; 3. metal reinforcement; 31. through hole; 32. convex strip; 33. protrusion; 4. reinforcing rib. DETAILED DESCRIPTION

[0046] The present invention will be further described below based on the accompanying drawings and specific embodiments.

[0047] Example 1

[0048] like Figures 1 to 8As shown, this embodiment 1 discloses a walking / treadmill with an integrated base 1, including a running board 24, a running belt 22, a motor 26, an electric control 27 and a roller 25. The integrated base 1 is pre-set with a mounting portion for mounting the running board 24, the running belt 22, the motor 26, the electric control 27 and the roller 25. The base 1 includes a crossbeam 12, a longitudinal beam 11 and a mounting cavity shell 13 arranged between the crossbeam 12 and the longitudinal beam 11, and a cover 21 is arranged above the mounting cavity shell 13. The crossbeam 12, the longitudinal beam 11 and the mounting cavity shell 13 are all made of reinforced plastic and are integrally injection molded. The position of the mounting cavity shell 13 is used to install the motor 26 and the electric control 27, the roller 25 is installed on both sides of the longitudinal beam 11 in the length direction, and the running board 24 and the running belt 22 are installed between the longitudinal beams 11 and located above the crossbeam 12. A side panel 23 is also arranged on the longitudinal beam 11. The longitudinal beam 11 and the cross beam 12 are arranged vertically, and the longitudinal beam 11 is wrapped with a metal reinforcement 3 extending along its length direction. The metal reinforcement 3 is made of iron material. The metal reinforcement 3 is provided with a plurality of through holes 31 arranged at intervals along its length direction and penetrating the wall of the metal reinforcement 3. The metal reinforcement 3 is provided with a convex strip 32 or a protrusion 33 which is concave inwardly on one side of the wall of the metal reinforcement 3 and protrudes outwardly on the other side. There are two protrusions 33 and one convex strip 32 extending along the length direction of the metal reinforcement 3. The cross beam 12 and the longitudinal beam 11 are densely covered with reinforcing ribs 4 in the length direction. The reinforcing ribs 4 are X-shaped and connected to each other. The reinforcing ribs 4 are integrally injection molded with the cross beam 12 and the longitudinal beam 11.

[0049] The reinforced plastic used in the base 1 is a mixture of polypropylene (PP) and glass fiber (GF), the glass fiber is composed of long glass fiber and short glass fiber, the glass fiber accounts for 15% to 35% of the total reinforced plastic, and the polypropylene accounts for 65% to 85% of the total reinforced plastic. The following table shows the properties of the materials produced by different proportions of polypropylene (PP) and glass fiber (GF).

[0050]

[0051]

[0052] Example 2

[0053] The difference between Example 2 and Example 1 is that the reinforced plastic is a mixture of polyamide 6 (PA6) or polyamide 66 (PA66) and glass fiber (GF), the glass fiber is composed of long glass fiber and short glass fiber, the glass fiber accounts for 15% to 35% of the total reinforced plastic, and the polyamide 6 or polyamide 66 accounts for 65% to 85% of the total reinforced plastic. The following table shows the properties of materials produced by different ratios of polyamide 6 (PA6) and glass fiber (GF).

[0054]

[0055]

[0056] Example 3

[0057] The difference between this embodiment 3 and embodiment 1 is that the reinforced plastic is a mixture of acrylonitrile-butadiene-styrene copolymer (ABS) and polycarbonate (PC), the proportion of polycarbonate to the total reinforced plastic is 30% to 40%, and the proportion of acrylonitrile-butadiene-styrene copolymer to the total reinforced plastic is 60% to 70%. The following table shows the properties of materials produced by different proportions of acrylonitrile-butadiene-styrene copolymer (ABS) and polycarbonate (PC).

[0058]

[0059]

[0060] Example 4

[0061] The difference between Example 4 and Example 1 is that the reinforced plastic is acrylonitrile-butadiene-styrene copolymer.

[0062] Example 5

[0063] The difference between this embodiment 5 and embodiment 1 is that the reinforced plastic is a mixture of polyolefin and reinforced filler in a preset ratio, or a mixture of polyamide and reinforced filler in a preset ratio, and the reinforced filler includes glass fiber, talcum powder, calcium carbonate, barium sulfate, wollastonite and whisker. The reinforced filler accounts for 5% or more, and the flexural strength of the reinforced plastic measured by the test method for plastic bending performance is greater than or equal to 25Mpa; the cantilever beam notched impact strength measured by the test method for plastic Izod impact strength is greater than or equal to 3kJ / m 2 .

[0064] A method for manufacturing the above-mentioned integrated base 1 comprises the following steps in sequence:

[0065] S1: mixing and heating the reinforced plastics according to their respective proportions, and granulating them by a granulator to make the reinforced plastics into granules;

[0066] S2: a metal reinforcement 3 is placed in the cavity of the injection mold corresponding to the longitudinal beam 11, and then the plastic particles are heated and melted by the injection molding machine and injected into the injection mold after the mold is clamped;

[0067] S3: After the injection of plastic particles is completed, the pressure is maintained;

[0068] S4: Cooling the injection mold to solidify the melt into a base 1 in the injection mold cavity;

[0069] S5: After cooling to room temperature, the injection mold is opened and the base 1 is demoulded.

Claims

1. A walking / treadmill with an integrated base, characterized in that: The invention comprises an integrated base, a treadmill, a treadmill belt, a motor, an electronic control and a roller. The integrated base is provided with a mounting portion for mounting the treadmill, the treadmill belt, the motor, the electronic control and the roller. The base comprises a crossbeam, a longitudinal beam and a mounting cavity shell arranged between the crossbeam and the longitudinal beam. At least the longitudinal beam and the mounting cavity shell are both manufactured by integral injection molding of reinforced plastic with a preset mixing ratio.

2. The walking / treadmill with an integrated base according to claim 1, characterized in that: The reinforced plastic includes: polypropylene and glass fiber, or polyamide 6 and glass fiber, or polyamide 66 and glass fiber; the glass fiber includes long glass fiber and short glass fiber.

3. The walking / treadmill with an integrated base according to claim 2, characterized in that: The preset mixing ratio of the reinforced plastic is: the glass fiber accounts for greater than or equal to 15%, and has at least one of the following characteristics: the tensile strength measured by the test method for the tensile properties of plastics is greater than or equal to 50Mpa; the bending strength measured by the test method for the bending properties of plastics is greater than or equal to 80Mpa; the cantilever beam notched impact strength measured by the test method for the Izod impact strength of plastics is greater than or equal to 8kJ / m 2 .

4. The walking / treadmill with an integrated base according to claim 1, characterized in that: The reinforced plastic comprises: polyolefin and stiffening filler, or polyamide and stiffening filler; the stiffening filler comprises one or more of glass fiber, talcum powder, calcium carbonate, barium sulfate, wollastonite and whisker.

5. The walking / treadmill with an integrated base according to claim 4, characterized in that: The preset mixing ratio of the reinforced plastic is: the proportion of the reinforcing filler is greater than or equal to 5%, and it has at least one of the following characteristics: the bending strength measured according to the test method of plastic bending performance is greater than or equal to 25Mpa; the cantilever beam notched impact strength measured according to the test method of plastic Izod impact strength is greater than or equal to 3kJ / m 2 .

6. The walking / treadmill with an integrated base according to claim 1, characterized in that: The reinforced plastic includes: acrylonitrile-butadiene-styrene copolymer, or acrylonitrile-butadiene-styrene copolymer and polycarbonate; wherein the preset mixing ratio of the reinforced material using a mixture of acrylonitrile-butadiene-styrene copolymer and polycarbonate is: the proportion of polycarbonate is greater than or equal to 30%, and it has at least one of the following characteristics: the tensile strength measured according to the test method for the tensile properties of plastics is greater than or equal to 50Mpa; the bending strength measured according to the test method for the bending properties of plastics is greater than or equal to 70Mpa; the Charpy notched impact strength measured according to the test method for the impact resistance of plastics is greater than or equal to 30kJ / m 2 .

7. The walking / treadmill with an integrated base according to any one of claims 1 to 6, characterized in that: The longitudinal beam is wrapped with a metal reinforcement extending along the length direction of the longitudinal beam. The metal reinforcement is provided with a plurality of through holes spaced apart along its length direction and penetrating the wall of the metal reinforcement. The metal reinforcement is provided with a plurality of convex strips or protrusions which are recessed inwardly from one side of the wall of the metal reinforcement and protruded outwardly from the other side.

8. The walking / treadmill with an integrated base according to any one of claims 1 to 7, characterized in that: The longitudinal beams and the cross beams are densely covered with reinforcing ribs formed integrally with the cross beams and the longitudinal beams, and the longitudinal beams and the cross beams are formed integrally with the same reinforced plastic by injection molding.

9. A method for manufacturing an integrated base according to claim 7 or 8, characterized in that: The following steps are involved: S1: The reinforced plastics are mixed and heated according to their respective proportions, and granulated by a granulator; S2: The plastic pellets are heated and melted by the injection molding machine and injected into the injection mold after the mold is clamped; S3: After the injection of plastic particles is completed, the pressure is maintained; S4: Cooling the injection mold to solidify the melt into a base in the injection mold cavity; S5: After cooling to room temperature, the injection mold is opened and the base is demoulded.

10. The method for manufacturing an integrated base according to claim 9, characterized in that: In the step S2, before the injection molding machine injects the plastic particles into the injection mold, the metal reinforcement is placed in the cavity of the injection mold corresponding to the crossbeam.

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