KR20070033896A - Expectation for carriage and manufacturing method thereof, and carriage - Google Patents

Abstract

An object of the present invention is to provide a carriage body which is excellent in impact resistance, cushioning property, strength and designability, and which is hard to damage a load and which is hard to slip, and a carriage provided with the carriage body. The carriage body 2 of the present invention is a mixing device in which a vulcanized rubber body made of waste rubber crushed material and a polymer matrix are introduced, and is formed by melting and molding a polymer binder under pressure. The carriage main body 6 has an anti-skid plate 20 provided in a recess 6c formed on the surface of the carriage main body base, and the anti-skid plate 20 has a vulcanized rubber body having a particle shape or a chip shape and vulcanized rubber. A polymeric binder for joining sieves is provided. Long back ribs are formed on the rear surfaces of the carriage main bodies 2 and 6. The back surface of the carriage main body 6 is further provided with the reinforcement which consists of an elongate member along a rib. The carriage 1 has a carriage main body 2 and a caster provided below. The carriage 7 has a carriage main body 6 and a caster provided below.

Carriage, Wheel, Polymer Binder, Rib, Reinforcement, Caster

Description

Expectation for carriage and manufacturing method thereof, and carriage {BASE FOR CARRIAGE AND MANUFACTURING METHOD THEREOF, AND CARRIAGE}

1 is a schematic perspective view for explaining the present carriage.

Fig. 2 is a schematic perspective view for explaining the present carriage with a slip prevention portion.

Fig. 3 is a schematic perspective view for explaining the surface of the carriage base (carriage base).

4 is a schematic perspective view for explaining the back surface of a carriage base (carriage base);

Fig. 5 is a schematic cross sectional view showing a step of producing a non-slip plate (slip prevention portion).

Fig. 6 is a schematic sectional view for explaining a state where an anti-slip plate (anti-slip part) is provided in a recess of a carriage base;

Fig. 7 is a schematic plan view for explaining the surface of the carriage base with an anti-slip part;

8 is a schematic plan view for explaining the surface of another carriage base with an anti-slip part attached thereto.

9 is a schematic plan view for explaining the surface of another carriage base with an anti-slip part attached thereto.

Fig. 10 is a schematic plan view for explaining the carriage backside of the present carriage.

Fig. 11 is a sectional view taken along the line A-A 'of Fig. 10 for explaining the carriage backside of the present carriage;

12 is a schematic plan view for explaining a carriage backside of the present carriage.

FIG. 13 is a schematic sectional view of FIG. 12 for explaining the carriage backside of the present carriage, FIG. 13A is a AA 'schematic sectional view, and FIG. 13B is a BB' schematic sectional view, FIG. c) CC 'schematic section.

14 is a schematic plan view for explaining the backside of the carriage base of the present carriage.

Fig. 15 is a sectional view taken along the line A-A 'of Fig. 14 for explaining the carriage backside of the present carriage.

Fig. 16 is a schematic plan view for explaining a part of the carriage backside of the present carriage, in which Fig. 16A is an example showing the arrangement of the caster mounting holes, and Fig. 16B is an arrangement of the caster mounting holes. Figure of another example showing the.

Fig. 17 is a schematic perspective view for explaining the present carriage with a slip prevention portion.

Fig. 18 is a schematic sectional view showing an example of a mold having an insert-type mold capable of forming an uneven shape and a base for a carriage molded using the same;

Fig. 19 is a schematic sectional view showing an example of a method of forming a base for a carriage having a through hole.

<Explanation of symbols for the main parts of the drawings>

1, 7: carriage

2, 6, 8: expectation for carriage (donation for carriage)

3, 4: wheel

5: handle

96a: vulcanized rubber body

96b: Polymer Binder

6c: recess of base for carriage

20, 21, 71, 72, 73, 74, 75: non-slip or non-slip plate

32, 33, 34: rib

81, 85, 89: reinforcement

90 caster

92, 93, 94: caster mounting holes

61, 62: base forming mold for carriage

631, 632, 633, 634: Insertion mold

[Document 1] Japanese Unexamined Patent Publication No. 2001-138923

[Document 2] Japanese Unexamined Patent Publication No. 2003-327125

[Document 3] Japanese Unexamined Patent Publication No. 2005-47323

The present invention relates to a carriage base and a manufacturing method including an elastic body in which a vulcanized rubber body is bonded by a polymer binder, and a carriage provided with a caster in the carriage base. More specifically, the present invention includes an elastic body using a vulcanized rubber body, which is a waste rubber crushed product obtained by crushing waste tires and the like, and is excellent in impact resistance, cushioning property, strength and designability, and the load is hard to be damaged and slippery. The carriage base and its manufacturing method, and the carriage provided with the caster in the carriage base.

Conventional carriages are provided with wheels on plate-shaped carriage bases such as metals and resins, and uneven surfaces and elastic bodies are provided on the surface of the carriage bases so that the load cannot slip off from the carriage bases. For example, see Japanese Patent Laid-Open No. 2001-138923 and Japanese Patent Laid-Open No. 2003-327125. Carriage is also known, in which waste plastics are treated and processed and used as carriage bases (see, for example, Japanese Unexamined Patent Application Publication No. 2005-47323).

However, since the material of the conventional carriage base material consists of metal, resin, etc., it was lacking in elasticity.

If the elasticity is insufficient, there is a problem that the load is slippery, weak against impact, and poor cushioning. On the other hand, a material having a high elasticity is likely to be deformed when the weight of the load is large, so the strength needs to be increased.

In addition, the carriage did not have a good aesthetic as the functional aspect of carrying the load was emphasized.

The present invention has been made in view of the above circumstances, and includes an elastic body in which a vulcanized rubber body is bonded by a polymer binder, and has excellent impact resistance, cushioning property, strength and designability, and expects a carriage for a load that is hard to be damaged and hard to slip. It is a problem to be solved to provide the carriage provided.

The present invention is as follows.

1. A carriage base comprising a polymer matrix and a carriage base comprising a vulcanized rubber body dispersed in the polymer matrix.

2. The said carriage base is made into the mixing apparatus provided with the stirring blade, stirring the said vulcanized rubber body and a polymer matrix material, and after that, obtained by press-molding the said vulcanized rubber body and the said polymer matrix material, Expectation for the carriage.

3. Said 1 which further has an anti-slip part provided in the recessed part formed in the surface of the said carriage base, and the said anti-slip part is provided with the vulcanized rubber body of particle shape or chip shape, and the polymeric binder which joins the vulcanized rubber body. Expectations for the carriage described in.

4. The carriage base according to 3, wherein the surface roughness of the surface of the non-slip part is larger than the surface roughness of the surface of the carriage base.

5. The carriage base according to item 3, wherein the anti-slip portion has a shape representing a character, a figure or a symbol, or a combination thereof.

6. The polymer matrix material is the carriage base according to the above 2, which is composed of a polymer binder.

7. The carriage base according to item 1, wherein the vulcanized rubber body contained in the carriage base is made of waste rubber.

8. The carriage base according to 1 above, wherein the vulcanized rubber body contained in the carriage base is a piece of powder.

9. The carriage base according to item 3, wherein the vulcanized rubber body contained in the anti-slip part is made of waste rubber.

10. The carriage base according to 1 above, wherein the back of the carriage base is provided with a caster mounting recess or a through hole.

11. The carriage base according to 1, wherein a plurality of long plate-shaped ribs are formed on at least one of the longitudinal, transverse, and inclined directions on the rear surface of the carriage base.

12. The carriage base according to 11, wherein a reinforcing tool made of an elongate member is provided along the rib on the rear surface of the carriage base.

13. The carriage base according to 12, wherein the reinforcing tool is made of iron, resin, or wood.

14. The carriage base according to 11, wherein at least one of the ribs includes a reinforcing tool made of an elongated member.

15. The carriage base according to 14, wherein the reinforcing tool is made of iron, resin, or wood.

16. A method for producing a carriage base according to item 3, wherein a mold comprising a mold having a recessed and detachable insert therein and having a removable insert therein is supplied, and the composition comprising a vulcanized rubber body and a polymer matrix material is supplied to the Manufacturing a base for a plate-shaped carriage having a recess on its surface;

Manufacturing a carriage base comprising: a non-slip part comprising a vulcanized rubber body having a particle shape or a chip shape and a polymer binder for bonding the vulcanized rubber body to the recessed portion of the carriage base; Way.

17. A composition comprising a vulcanized rubber body and a polymer matrix material, using a mold having an insertable mold formed therein that is capable of forming an uneven shape or a through hole and is detachable therein. And a step of producing a plate-shaped carriage base having a caster mounting recess or a through hole on the surface thereof, the method of manufacturing a carriage base.

18. A carriage comprising the carriage base according to 1 above and a caster provided below the carriage base.

19. A carriage comprising a carriage base as described in 3 above and a caster provided below the carriage base.

EMBODIMENT OF THE INVENTION Hereinafter, the carriage base of this invention, its manufacturing method, and carriage are demonstrated in detail using drawing.

Said "carriage base" is a plate-shaped part which comprises the carriage base which loads cargo, and is square shape normally. The carriage base may also be provided with recesses and through holes for installing casters. Moreover, in the case of a recess, it is normally arrange | positioned at the back surface of the carriage base. The carriage base has a polymer matrix and a vulcanized rubber body dispersed in the polymer matrix. Moreover, resin, carbon black, a metal, etc. which are contained in waste rubber etc. may be contained.

The above-mentioned "polymer matrix" is intended to maintain the shape of the entire carriage base by joining and / or filling gaps between the vulcanized rubber bodies to fix the position of the vulcanized rubber bodies. In the formation of the polymer matrix, any polymer matrix material such as a polymer binder and an adhesive can be used, and a polymer binder is preferable.

Said "polymer binder" forms the said polymer matrix by filling the clearance gap between the said vulcanized rubber bodies, and can be suitably selected according to a vulcanized rubber body. As this example, the binder containing an olefin type polymer, a vinyl aromatic compound type polymer, an aromatic polycarbonate, an acrylic polymer, an aromatic polyester, a polyamide, etc. is mentioned.

Examples of the polymer contained in the polymer binder include polyethylene resins such as ultra low density polyethylene (VLDPE), linear low density polyethylene (LLDPE), low density polyethylene (LDPE), medium density polyethylene (MDPE), and high density polyethylene (HDPE); Polypropylene resin (PP), polybutadiene (PBD), poly 1-butene (PB), polymethylpentene (PMP), general polystyrene (GPPS), impact resistant polystyrene (HIPS) such as random type or block type or homo type , Isotactic polystyrene (iPS), syndiotactic polystyrene (sPS), polyα-methylstyrene (PαMS), ethylene-propylene copolymer (EPM), propylene-1-butene copolymer (PBM), ethylene-1- Butene copolymer (EBM), an ethylene octene copolymer (EOM), ethylene propylene 1-butene copolymer (EPBM), and ethylene propylene diene copolymer (EPDM) are mentioned.

In addition, polyvinyl acetate (PVAc), nylon 4, 6 (PA46), nylon 6 (PA6), nylon 6, 6 (PA66), nylon 6, 10 (PA610), nylon 6, 12 (PA612), nylon 12 ( PA12), polyester resins such as reinforced polyamide, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polylactone, polycarbonates such as poly-2, 2-bis (hydroxyphenyl) propanecarbonate ( PC).

Furthermore, acrylic polymers, such as polymethyl methacrylate (PMMA), polyethyl methacrylate (PEMA), and methacryl styrene copolymer (MS Resin), polyacetal (POM), ABS resin, AES resin, ASA resin, Diaryl phthalate resin (DAP), EVA resin, EEA resin, phenol resin (PF), polyvinyl alcohol (PVA), ethylene vinyl alcohol copolymer (EVOH), polyarylate (PAR), norbornene resin, poly (2 , 6-dimethyl-1, 4-phenylene ether), poly (2-methyl-6-ethyl-1, 4-phenylene ether), poly (2-methyl-6-phenyl-1, 4-phenylene ether ), Polyphenylene ether (PPE) such as poly (2, 6-dichloro-1, 4-phenylene ether), modified polyphenylene ether (modified PPE), polyethylene oxide, polyphenylene sulfide (PPS), poly Sulfone (PSU), thermoplastic polyester elastomer, thermoplastic polyurethane elastomer, thermoplastic polyamide elastomer, α, β-unsaturated nitrile, acrylic ester, unsaturated diene copolymer high Examples thereof include urethane rubber, butadiene rubber, chloroprene rubber, ethylene / propylene rubber, nitrile rubber, butyl rubber, styrene butadiene rubber and the like.

Moreover, said polymer can combine arbitrary 2 or more types, For example, combining hard PP and a soft butadiene rubber etc. are mentioned.

Said "vulcanized rubber body" can be made into arbitrary shapes, such as a chip shape, an elongate rod shape, the shape of a fin provided with a branch, and a powder shape. As the material of the vulcanized rubber body, any rubber exemplified in natural rubber, isoprene rubber, butadiene rubber, chloroprene rubber, ethylene / propylene rubber, nitrile rubber, butyl rubber, styrene / butadiene rubber, or the like and combinations thereof can be used. Moreover, waste rubber, such as rubber packing used for waste tires, window frames, doors, etc., dustproof rubber, and the end member which arises at the time of rubber product manufacture, can also be used. This waste rubber may contain impurities other than the vulcanized rubber body.

In addition, irrespective of the kind of used waste tires, for example, tires for passenger cars (PC tires), tires for small trucks (LT tires), tires for trucks and buses (TB tires) and tires for motorcycles (MC tires) ) At least one of them can be used. Moreover, wheel tires, such as a carriage caster, the end material at the time of manufacture, etc. can also be used. Since the waste rubbers obtained from the tread portion of truck tires (TB tires) do not contain wires or fibers, or because there are few, there are no holes formed due to their fall out, or a small amount of vulcanized rubber bodies having excellent aesthetics. You can get it.

Said "fragment" means a crushed object, a cutting piece, a pulverized object, a punching board, etc. The shape can be made into arbitrary shapes, such as a chip shape, an elongate rod shape, or the shape of a fin provided with a branch, and a powder shape. In addition, the shape may be arranged in a predetermined shape, for example, the shape may not be neat, such as a crushed product obtained by crushing. Although the size of such a vulcanized rubber body can be selected arbitrarily, For example, the maximum width (maximum length) becomes like this. Preferably it is 0.5 mm-10 mm, Especially preferably, it is 1 mm-5 mm. The vulcanized rubber body may be of uniform size or of nonuniform size. This is because the vulcanized rubber body having such a width is easy to manufacture and does not easily protrude when it is molded to the carriage base.

In addition, when the size of the used waste rubber is larger than the maximum width (maximum length), it can be made finer by any means such as crushing, cutting and punching to have the maximum width (maximum length) or less.

The vulcanized rubber body may be a colored colored rubber chip. The raw material of this colored rubber chip contains the rubber chip, the polyurethane resin, and the coloring material which are the same material as the said vulcanized rubber body at least.

Said "polyurethane resin" is a moisture-curable polyurethane resin in one liquid, preferably used as a binder for adhering a colorant to a rubber chip. Moreover, a polyurethane resin can also select hardening time arbitrarily. Moreover, you may add arbitrary additives for characteristics adjustment, such as hardening time. The polyurethane resin is usually added in an amount of 1 to 20 parts by weight, preferably 1 to 15 parts by weight, and more preferably 1 to 10 parts by weight based on 100 parts by weight of the rubber chip. By using such an amount, the rubber chip can be sufficiently colored. Examples of the additive include a curing accelerator catalyst. An amine salt catalyst etc. are mentioned as said "hardening promotion catalyst." Examples of the amine salt catalyst include triethylenediamine, tetramethylguanidine, and N, N, N ', N'-tetramethylhexane-1, 6-diamine, and the like. In addition, it is preferable that a hardening promoting catalyst is not included. This is because the characteristics may be affected on the polyurethane resin film.

Said "coloring material" can be arbitrarily selected according to the use of a colored rubber chip and a carriage, and a pigment is used normally. The pigment may be either an inorganic pigment or an organic pigment, but an inorganic pigment is usually used. Moreover, you may mix several coloring agents. In addition, the color tone of the coloring agent is not particularly limited, and examples thereof include white, red, brown, yellow, green, blue, purple, and gray. Among them, the L * axis (brightness) in the L * a * b * color system is preferably 60 or more, more preferably 65 or more, and particularly preferably pale color or white of 70 or more.

As this pale color or white, pink, beige, light green, light blue, light purple, light gray, etc. are mentioned. In addition, each color is not limited to these colors, The said brightness which mixed arbitrary colors may be 60 or more colors.

The coloring agent is usually added in an amount of 0.3 to 8 parts by weight, preferably 0.5 to 6 parts by weight, and more preferably 0.7 to 4 parts by weight based on 100 parts by weight of the rubber chip. By using such an amount, the rubber chip can be sufficiently colored.

The colored rubber chip raw material may contain, for example, a diluent and an anti-aging agent for improving weather resistance.

The diluent is used to improve the coloring of the rubber chip by adjusting the viscosity of the colored rubber chip raw material or the like. The diluent is preferable as long as the dilution of the binder is possible, and usually, urethane thinner can be used.

In addition, although the inorganic powder which prevents aggregation of the produced colored rubber chip may be contained in the colored rubber chip raw material, it is more preferable not to include it. This is because aggregation can be prevented sufficiently without adding the inorganic powder. Moreover, there is no change of the film | membrane characteristic of the colored rubber chip by adding an inorganic powder, and an inorganic powder does not remain at the time of incineration. Examples of such inorganic powders include calcium carbonate, talc, silica, clay and kaolin.

The manufacturing method of the said colored rubber chip is not specifically limited. As an example of this manufacturing method, the polyurethane resin which is a binder is hardened to start and gelatinizes, and the stirring mixing process which coats and forms the gel-like film of the polyurethane resin containing a coloring agent on the surface of a rubber chip, and the polyurethane resin which is a binder And a watering step of accelerating the reaction by the water added with the sprinkling water and a hardening step of completing the hardening of the uncured powder of the polyurethane resin as the binder with the watering water in this order.

In addition, a stirring mixing process, a watering process, and a hardening process can be repeated by 1 or more arbitrary times in this order. For example, a color tone of L * axis in the L * a * b * color system of less than 60, preferably less than 55, particularly preferably less than 50 (e.g. red, brown, ocher, green, blue, purple , Gray and black can be exemplified), by repeating each step once or twice, a colored rubber chip of a desired color can be obtained, and the L * axis is 60 or more, preferably 65 or more, particularly preferably In the case of light shades of 70 or more (for example, pink, beige, light green, light blue, light purple, and light gray), each process may be repeated three or more times to obtain a good colored rubber chip having no background color. have.

The ratio of the vulcanized rubber body and the polymer matrix constituting the carriage base may be arbitrarily selected, for example, 95: 5 to 50:50, more preferably 80:20 to 50:50, more preferably in weight ratio. 70:30 to 50:50. Therefore, the polymer binder used when producing the carriage base is used by adjusting the polymer matrix to be an amount in the above range.

The method for forming the base for the carriage in which the vulcanized rubber body is dispersed and bonded in the polymer matrix is not particularly limited. As this shaping | molding method, the method of shape | molding compositions, such as a gel-type material in which the polymer matrix material (polymer binder) melt | dissolved between vulcanized rubber bodies, is shape | molded by the press molding machine can be illustrated. Moreover, as a method of manufacturing this gel-like thing, a vulcanized rubber body and a polymer matrix material (polymer binder) are thrown into the mixing apparatus (mixer) provided with a stirring blade, a stirring blade is rotated, and a vulcanized rubber body and a polymer matrix material ( And a method of heating by heating with the heat generated, and a method of heating a mixture including a vulcanized rubber body and a polymer matrix material (polymer binder) in contact with a heat source. Among these, the method by stirring of the former is preferable. It is because heating by stirring can raise a vulcanized rubber body etc. without a nonuniformity, and can prevent decomposition | disassembly etc. by partial overheating by a temperature rise nonuniformity.

In the present invention, preferably, the base for the carriage is a waste rubber in which the vulcanized rubber body comprises a crosslinked rubber such as a natural rubber, butadiene rubber, isoprene rubber, styrene / butadiene rubber such as tires, various rubber packings, dustproof rubbers and the like. And the polymer matrix is made of polypropylene, and the weight ratio of the vulcanized rubber body and the polymer matrix is preferably 80:20 to 50:50, more preferably 70: It has a structure which is 30-50: 50.

In addition, the said carriage base forms the so-called "island structure" in which the "island" of a vulcanized rubber body exists normally with respect to the "ocean" of a polymer matrix, and the outermost surface has the small convex part derived from a vulcanized rubber body etc. There may be a case where it has and a smooth case.

Said "slip-resistant part" is provided in the recessed part formed in the surface of the carriage base. The anti-slip part mainly serves to prevent the load on the carriage (the carriage base) from slipping, and it is preferable that the roughness is larger than the surface of the carriage base.

The shape of the anti-slip portion can be in any shape, particularly. As the shape, a simple shape such as a quadrangular shape, a circular shape, a track shape, or the like, such as a shape imitating a contour such as a character or a drawing shape, may be exemplified. As an example of these letters and figures, a company name and a brand name, these initials, a mark, a logo, and the other design can be illustrated. Moreover, you may provide the groove | channel and the protrusion which imitated the shape of a grid | lattice, parallel lines, etc., and the outlines, such as a character and a figure, on the surface of an anti-slip part.

In addition, the number and size of anti-slip portions are not particularly limited, and can be selected arbitrarily. The non-slip part can be provided at any position as long as it is the surface of the carriage base. For example, a plurality of non-slip portions provided along the periphery of the carriage base installed on the entire surface of the carriage base or on the substantially entire surface of the center may be provided at a desired position. In addition, when providing a non-slip part in a predetermined position, it can be set as arbitrary arrangements. For example, as shown in FIG. 2, one non-slip part is provided in the front side, it is provided in an inner side, and it installs only in a center part, etc. are mentioned, for example. In addition, when provided in the left and right sides of the carriage base, it may be provided in a straight line as shown in FIG. 17, and may be divided into 2 or more as shown in FIG. In addition, when installing in a center part, you may divide and install in the center part and a front part as illustrated in FIG.7, FIG.8.

In addition, an anti-slip part used for these arrangements is not limited to the shape illustrated in each figure, It can be set as arbitrary shapes. It is also possible to arrange a plurality of illustrated arrangements in combination.

In addition, the anti-slip part can be used by coloring in various colors. For example, as illustrated in Fig. 7, the anti-slip part 71 is yellow, the anti-slip part 72 is red, and the anti-slip part 73 is green, and the carriage base is made of black waste tires. In this case, when these colors float on the black carriage base surface 76, the colors become more colorful and the designability can be further improved.

An example of the carriage base provided with the anti-slip unit described above will be described with reference to Figs.

As illustrated in Figs. 7 to 9, the punching portion 72a can be a non-slip portion 72 showing initials. In addition, a punching part is not limited to an initial, It can also give other designs, such as a mark, a logo, a company name. Moreover, the horizontal anti-skid part 73 is arrange | positioned at the center lower part. In addition, in the slipper 73, a company name, an article number, etc. can be displayed on the punching part 73a. In this way, it is possible to give a non-slip part a designability and an identification function. It is also possible to not punch out.

In Fig. 7, two long non-slip portions 71 are arranged on both sides on the surface 76 of the carriage base, and one large non-slip portion 72 is disposed in the central portion 77.

In Fig. 8, five horizontal non-slip portions 74 are arranged inside the central portion 77, and in combination with the vertical long non-slip portions 71 to balance the anti-slip effect in both the longitudinal and horizontal directions. have. The holding material 78 provided with the anti-slip part 74 is fitted on the carriage base surface 76. Arrangements and effects on other parts are the same as those in FIG. 7, and thus description thereof will be omitted.

In FIG. 9, the anti-slip part 75 arrange | positioned at the center part 77 has the punching part 75a of the grid | lattice-shaped groove | channel. And especially in the center part 77, it is the structure which exhibits the anti-slip effect large. Arrangements and effects on other parts are the same as those in FIG. 7, and thus description thereof will be omitted.

7 to 9, the anti-slip portions 71, 72, 73 and the central portion 77 have the same outer circumferential shape. Therefore, when manufacturing the base for a carriage by shaping | molding, the metal mold | die which forms the recessed part for providing the slip prevention parts 71, 72, 73, and the center part 77 can be made removable. It is because manufacturing efficiency can be improved if it replaces a metal mold | die as needed.

The material of an anti-slip part should just have a function as an anti-slip, For example, rubber and resin can be used. Among these, the thing which consists of a particle-like or chip-like vulcanized rubber body and the polymeric binder (or adhesive agent) which joins the said vulcanized rubber body is mentioned. These vulcanized rubber bodies and polymer binders may be made of the same materials as those of the vulcanized rubber bodies and the polymer binders used for producing the base for carriage. Moreover, a commercial item can be used for an adhesive agent. Moreover, all of the said vulcanized rubber bodies may be coat | covered with the polymeric binder or adhesive agent, and may not be coat | covered.

On the outermost surface of the said slip prevention part, a vulcanized rubber body may be exposed and arrange | positioned, and vulcanized rubber bodies may be joined inside, and the vulcanized rubber body coated with the polymeric binder or adhesive may be between adjacent vulcanized rubbers. It may be arranged without voids. In the former case, the high anti-slip effect using the space | gap and unevenness | corrugation of the adjacent vulcanized rubber body in the outermost surface is exhibited.

The ratio of the vulcanized rubber body and the polymer binder (solid content) constituting the anti-slip part can be arbitrarily selected, for example, 99: 1 to 45:55 by weight ratio, more preferably 99: 1 to 50:50, and more preferably. Preferably from 98: 2 to 55:45. In addition, the weight ratio can be appropriately changed in accordance with the hardness of the vulcanized rubber body, the kind of cargo to be loaded on the carriage, and the like. Moreover, since it has such a function as anti-slip, rubber hardness can be 35-65 degree, for example, 40-60 degree preferably.

In the present invention, the preferred slipper is illustrated below.

[1] The vulcanized rubber body is formed by processing waste rubber containing crosslinked rubber such as tires, various rubber packings, dustproof rubbers, such as natural rubber, butadiene rubber, isoprene rubber and styrene / butadiene rubber (crushed particles , Chips, etc.), and the polymer constituting the polymer binder is polyurethane, and the polymerization ratio of the vulcanized rubber body and the polyurethane is preferably 99: 1 to 45:55, more preferably 98: 2 to 50:50. To have.

[2] The vulcanized rubber body is obtained by processing waste rubber as described in [1] (crushed particles, chips, etc.), and the polymer constituting the polymer binder is composed of polyurethane and polypropylene, and the vulcanized rubber body and polymer The weight ratio of the binder is preferably 99: 1 to 50:50, more preferably 98: 2 to 55:45, and the weight ratio of polyurethane and polypropylene is preferably 30:70 to 70:30, more preferably. Preferably from 40:60 to 60:40.

[3] The vulcanized rubber body is obtained by processing waste rubber as described in [1] (crushed particles, chips, etc.), and the polymer constituting the polymer binder is composed of polyurethane and polypropylene, and the vulcanized rubber body and polymer The polymerization ratio of the binder is preferably 99: 1 to 50:50, more preferably 98: 2 to 55:45, and the weight ratio of polyurethane and (polyethylene + polypropylene) is preferably 30:70 to 70 : 30, more preferably 40: 60 to 60: 40.

The anti-slip part can be produced by any means, and in the case of the aspect [1], for example, a vulcanized rubber body and a polymer binder in a particle shape or a chip shape can be mixed and flow molded. Molding by the inflow molding, for example, as shown in Fig. 5, the particulate rubber or chip-like vulcanized rubber body (96a) and the polymeric binder (96b) is introduced into the container 95 at the above ratio, so as to be uniform. Mix. The homogenized mixture 96 flows into the shaping mold 98. Then, the mixture 96 is dried to form an anti-slip plate or the like, and is taken out from the molding die 98.

In the case of the above aspects [2] and [3], each raw material is supplied to the same mixing apparatus or the like to melt the polypropylene or a mixture of polyethylene and polypropylene when used to produce the carriage base. It is possible to form a non-slip plate and the like by joining the vulcanized rubber bodies together with the polyurethane using an or the like. By using polypropylene or a mixture of polyethylene and polypropylene, the shape stability of the non-slip part can be improved.

In the anti-slip plate and the like thus produced, a plurality of vulcanized rubber bodies are joined by a polymer binder. On the outermost surface, it is preferable to have a configuration in which a vulcanized rubber body which is not covered with a polymer binder or the like is exposed and arranged as shown in Fig. 6 (Anti-slip portion 20). As shown, the so-called "island structure" in which the "island" of the buried rubber body 96a exists may be formed with respect to "the sea" of the polymeric binder 96b.

In addition, an anti-slip board etc. are not limited to the said inflow shaping | molding, For example, you may press-form using the composition containing a vulcanized rubber body and a polymeric binder.

The shape and size of the concave portion provided with the anti-slip portion can be arbitrarily selected, and can be substantially the same as or slightly larger than the size of a non-slip plate or the like. In addition, the depth of the recess should be such that the non-slip portion can contact the cargo loaded on the surface of the carriage base. For example, the upper surface of the non-slip portion is 0 to 6 mm than the upper surface of the carriage base except the recess. Preferably, 1 mm-4 mm can be made high.

The means for providing the non-slip plate or the like to the concave portion can be arbitrarily selected, for example, adhesion with an adhesive, adhesion with an adhesive, fitting into the concave portion, and heat bonding with the non-slip plate and the carriage base. For example.

An example of installation in the recessed portion of the carriage base such as an anti-slip plate will be described with reference to FIG. The depth H2 from the surface 6a of the base base to the recess bottom face 6b is provided with a recess 6c of 1 to 7 mm, preferably 2 to 5 mm, and the recess 6c. The non-slip plate 20 is fitted to engage with the &lt; RTI ID = 0.0 &gt; Or the recess bottom face 6b of the carriage base and the non-slip plate lower surface 20b are adhere | attached with an adhesive agent. The maximum height H1 from the carriage base surface 6a to the surface 20a of the anti-skid plate is 0 to 6 mm, preferably 1 mm to 4 mm. In this way, in order to enhance the anti-slip effect, it is preferable that the non-slip surface slightly protrudes from the surface of the carriage base.

The formation method of the recessed part in the said carriage base can be arbitrarily selected. Moreover, it is produced by integrally molding at the time of manufacture of the base for carriage normally. Moreover, the insertion type metal mold | die which forms the said recessed part of a different shape in each metal mold | die for manufacturing a carriage base can be made detachable. By using such an insert mold, even in the case of manufacturing the anti-slip portions 72, 74, 75 illustrated in Figs. 7 to 9, only parts of the insert mold installed in the mold of the carriage base are replaced. Can be produced. For this reason, even if the shape of an anti-slip part is changed, it is not necessary to change the whole metal mold | die of a carriage base, and the working time of metal mold production can be reduced, and it can manufacture at low cost.

If any one of the anti-slip portions 71, 72, 73, 74, and 75 is unnecessary, the convex mold of the portion is removed, and the removed portion has the same height as the portion other than the insertable mold use portion. Arrangement of a non-slip part can be eliminated by inserting the metal mold | die which becomes a surface. Thereby, the surface of the molded carriage base can be made into the surface of the same height as the part in which the non-slip part is not provided. In that case, some convex grooves formed by the periphery of the mold are formed on the surface of the carriage base formed by a slight gap around the insertable mold.

The manufacturing method of the carriage base (I) provided with the carriage base which has the recessed part for arrange | positioning an anti-slip part, and a slip prevention part using the said insertion die | dye is demonstrated in detail.

The carriage base (I) has a plate shape having concave portions on its surface by supplying a composition comprising a vulcanized rubber body and a polymer matrix material by using a mold having an internally insertable and detachable insert mold therein. And a step of fixing a non-slip part including a particulate or chip-shaped vulcanized rubber body and a polymer binder for bonding the vulcanized rubber body to the concave portion of the carriage base. It can manufacture by the method of doing.

As the above-mentioned "mold having an insertable mold which can form a concave-convex shape and detachable therein" (hereinafter referred to as "mold" (M))), for example, as shown in FIG. In the inner space (cavity) formed by the mold 61 having the unevenness of the mold and the mold 62 having the recessed portion, the base for the carriage carriage after molding is formed in the recessed portion of the mold 62. The insertion mold 631 (the thickness is constant and the plane shape is polygonal, linear shape, curved shape, zigzag shape, etc.) which protruded convexly from the inner surface of the mold 62 to the inner space side is further arrange | positioned so that it may form. However, as shown in Fig. 18B, an insertion die 632 having a concave-convex shape on the surface and protruding from the inner surface of the mold 62 to the inner space side (the plane is polygonal, linear, or curved) Arranged in a zigzag shape) The can. Moreover, this mold M may be provided with the site | part which can form a recessed part or a through hole, a rib mentioned later, etc. for installing a caster.

In addition, the said insert metal mold 631 and 632 can be attached or detached from the mold 62, and can be made into various shapes according to the shape of a carriage base. The insertion molds 631 and 632 which can be arrange | positioned at the recessed part of the mold 62 may be one, or a combination of two or more may be sufficient.

By supplying the composition containing the vulcanized rubber body and the polymer matrix material to the cavity by using the mold M, a substantially plate-shaped carriage base 6 having a recess can be obtained. In addition, as said "composition containing a vulcanized rubber body and a polymer matrix material," the above-mentioned vulcanized rubber body, a polymer matrix material (polymer binder), etc. are used, and the mixing apparatus provided with a stirring blade as mentioned above is used. It is possible to use a composition obtained by melting at least a polymer matrix material (polymer binder) by mixing with a vulcanized rubber body by using a composition or a heating device.

Using the mold M of Figs. 18A and 18B, the carriage base 6 appearing between the mold 61 and the mold 62 can be obtained. Moreover, in each carriage base 6 of FIG. 18 (a) and FIG. 18 (b), the upper side becomes the back surface of the carriage base I, and the lower side is concave in which the rear anti-slip part is arrange | positioned. It becomes the surface side of the base I for carriage which has a part.

Subsequently, a non-slip part (such as an anti-slip plate) including a particulate or chip-shaped vulcanized rubber body and a polymer finder for bonding the vulcanized rubber body as described above is used as the base 6 for the carriage. The non-slip part is fixed by fixing it to the recessed portion by using an adhesive or an adhesive or by fitting it to the recessed portion without using them, or by thermally bonding the bonding surface of both to obtain the carriage base I. have.

Said "rib" is an elongate plate-shaped member formed in at least one of the longitudinal direction, the lateral direction, and the inclination direction of the back surface of the carriage base, for example, when the square-shaped carriage base is arranged vertically. Although the number of ribs is not specifically limited, It is preferable that it is 5-10 in a longitudinal direction. It is preferable that it is 5-10 also about a lateral direction.

As shown in Fig. 4, ribs 32 in the longitudinal direction, ribs 33 in the transverse direction and ribs 34 in the inclined direction are formed on the rear surface of the carriage base. The rib may be only in the longitudinal direction, only in the transverse direction, or in the inclination direction, or a combination thereof. Preferably, as shown in Fig. 4, ribs are provided in all of these directions.

The reinforcement ball is provided on the rear surface of the carriage base and is used to prevent the carriage base from being deformed even when a large load of cargo is loaded. The form in which this reinforcement is arrange | positioned at the base for a carriage can be selected arbitrarily, and if a reinforcement is provided in addition to a rib, reinforcement can be enlarged further.

The reinforcement can be in close contact with the ribs along the ribs or can be installed inside the ribs. The position where the reinforcing tool is provided is not particularly limited, and as shown in FIG. 10, the reinforcing tool may be provided in any one direction, two directions, or all directions in the longitudinal direction, the transverse direction, or the inclined direction. The number is not particularly limited.

There is no limitation in particular in the installation method of a reinforcement tool, As long as it can fix, for example, through the board provided in the base for carriage by fixing fasteners, such as a bolt and a nut, there is no limitation in a fixed direction.

The material of the reinforcing tool may be made of iron (metal), resin, or wood, and the shape may also be a plate, tubular, or rod. In addition, linear, curved and zigzag shapes are all good.

The reinforcement may be installed along the rib as shown in FIGS. 11 to 13. In addition, the installation position of a reinforcement tool is not specifically limited, In the case of seeing each drawing, you may install in any one direction, two directions, or all directions of a longitudinal direction, a lateral direction, or an inclination direction. The number is not particularly limited. In addition, the installation method of a reinforcement tool is not specifically limited, It is fixed so that it may be clamped between a member etc. and a carriage base, or it is screwed by the screw 87 as illustrated to the reinforcement port 85 of FIG. Or by fitting in the gap between the ribs, adhesively fixing, or embedding in the carriage base.

10 and 11, the reinforcement tools 85 and 89 can be fixed so as to be sandwiched between the wheel mounting member of the caster 90 and the carriage base. This fixing method can fix the reinforcement tools 85 and 89 simultaneously with the installation of the caster 90, and at the same time the reinforcement tools 85 and 89 are also removed at the time of removing the caster 90 when the carriage is discarded. Since it can be separated from the base for carriage, it is preferable because separation can be performed easily.

In addition, as illustrated in FIGS. 12 to 13, an example in which the reinforcement portion 85 is provided in two groups along the rib 32 is illustrated. As shown in Fig. 13, there is a method of fixing the plate 86 and the nut 87 via the plate 88 provided at the base of the carriage. There is no limitation to a fixation opening as long as it can be fixed. It is also possible to fix the caster's wheels together with the casters using a fixture that fixes the wheel of the caster to the base for the carriage.

14 and 15, the reinforcement tool 81 can be embedded in the rib 32 using any means such as insert molding. In this case, the reinforcing tool can be assembled at the same time as forming the carriage base, which is effective. In addition, there is no need to prepare a member for fixing separately, and there is little advantage of falling off.

As the caster provided on the back side of the carriage base, a caster used for a normal carriage can be used, and the material, structure, number, installation position, installation method, and the like of the carriage are not particularly limited.

Moreover, according to the use of a carriage, a caster can be normally selected suitably. For example, soft wheels are used to load lightweight, vibration-avoiding loads, and hard wheels to load heavy loads.

In the case of selecting various casters, the positions of the holes of the mounting members of the casters may be different, but in such a case, by providing the caster mounting holes at various positions of the carriage bases in advance, various types of carriages can be used as one carriage base. Casters can be installed.

On the other hand, when different types of casters are used for each lot, it is possible to change the position of the caster mounting holes by inserting and detaching a mold for forming the caster mounting holes of the casters provided in the carriage. When manufacturing the base for carriage which differs in the position of a caster installation hole and a position of a caster installation hole, since it can manufacture by replacing an insertion part, work efficiency can be improved.

As shown in Fig. 16, there is also a caster provided through the caster mounting holes 92 and 94 with respect to the caster fixed by the caster mounting holes 92 and 93. As shown in Figs. In such a case, if three places of the caster mounting holes 92, 93, and 94 are provided, unnecessary holes are formed in one of the caster mounting holes 93 or 94. Therefore, when the molds for opening the caster installation holes 93 and 94 of the carriage forming dies are made to be detachable inserts and installed on only one of them, and replaceable, inserting dies can be made without creating unnecessary holes. Just by replacing only, two types of casters with different pitches can be supported.

That is, when opening the caster mounting hole 93 as shown in Fig. 16A, an insertion die is prepared at this position, and the caster mounting hole 94 is not opened. On the other hand, when opening the caster mounting hole 94 as shown in Fig. 16B, an insertion die is prepared at this position, and the caster mounting hole 93 is not opened. Here, the blind hole metal mold | die which becomes a surface of the same height as the parts other than the use part of the insertion hole metal mold | die for mounting hole formation is inserted in the side which is not provided with the mounting hole metal mold | die for installation hole formation. Thereby, when molded, some circular convex grooves are formed by a slight gap around the mold for blind hole.

The manufacturing method of the carriage base II provided with the carriage base provided with the recessed part or the through-hole for arrange | positioning a caster using the said insertion mold is demonstrated.

The carriage base (II) is a composition (same as above) comprising a vulcanized rubber body and a polymer matrix material by using a mold having an insertable mold therein that is capable of forming an uneven shape or a through hole and is removable. It can manufacture by providing the process of supplying and producing the plate-shaped carriage base which has a recess for a caster installation, or a through-hole in the surface (one surface side).

As the above-mentioned "mold having an insertable mold which can form an uneven shape and detachable therein" (hereinafter referred to as "mold M2"), for example, as shown in FIG. In the internal space (cavity) formed by the mold 61 and the mold 62 which has a recessed part and / or a convex part, it shape | molds in the recessed part (left side of FIG. 19) of the mold 62, for example. The insertion mold 633 (it is a pillar-shaped member etc.) which protruded convexly from the inner surface of the mold 62 to an inner space side, etc. are mentioned so that a later carriage base may form a through hole. Moreover, this mold M2 may be provided with the site | part which can form the said rib etc. In addition, when the insertion die which protruded from the same surface as the said insertion die 633 is not arrange | positioned to the recessed part previously provided in the die 62, the other insertion die | dye which flattens the inner surface of the die 62 is flat. 634 may be disposed.

The insertion dies 633 and 634 are detachable from the mold 62 and can be variously shaped by the shape of the carriage base. One insert mold | die 633 and 634 which can be arrange | positioned at the recessed part of the mold 62 may be sufficient, and a combination of two or more may be sufficient as it.

By supplying the composition containing the vulcanized rubber body and the polymer matrix material to the cavity using the mold M2, a substantially plate-shaped carriage base 6 having a caster mounting recess or a through hole can be obtained. In addition, as said "composition containing a vulcanized rubber body and a polymer matrix material," the above-mentioned vulcanized rubber body, a polymer matrix material (polymer binder), etc. are used, and the mixing apparatus provided with a stirring blade as mentioned above is used. And a composition obtained by melting at least a polymer matrix material (polymer binder) using a composition prepared or a heating device and mixing with a vulcanized rubber body can be used.

After the said process, a slip prevention part can be arrange | positioned similarly to the said carriage base I as needed.

The carriage of this invention is a carriage in which the said carriage base and the said caster were provided. The carriage can also be provided with a handle 5 (see Figs. 1, 2 and 17). The handle may be a handle used for a normal carriage, and the material, structure, number, installation method, and the like of the handle are not particularly limited.

(First embodiment)

EMBODIMENT OF THE INVENTION Hereinafter, the carriage base and carriage of this invention are demonstrated concretely.

The carriage base 2 consists of a plate (carriage base) molded with an elastic body using waste tires, and the surface is roughly flat with a size of 600 mm long, 390 mm wide and 40 mm thick as shown in FIG. Shape.

As shown in Fig. 3, the carriage base 2 is provided with a caster mounting hole 25 and a handle mounting hole 26, which are through holes that face from the front surface to the rear surface. 4, the rib which is a reinforcement is provided in the back surface of the carriage base 2 as shown in FIG. In addition, seven ribs 32 in the longitudinal direction, seven ribs 33 in the transverse direction, and four ribs 34 are provided in the inclined direction from the center, and these ribs are used for the carriage base 2. Strength is maintained.

The manufacturing method and molding method of this elastic body are shown below. At first, the waste tire was crushed to a size equivalent to 5 mm in diameter. Subsequently, the crushed material of the waste tire and polypropylene as a polymer binder were charged into a mixer having a stirring blade at a polymer weight ratio of 60:40, and stirred. By this stirring, the crushed material of the waste tire and the polymer binder were heated to melt the polymer binder, thereby obtaining an elastic body in a gel state. The gel-like elastic body was molded by a pressure molding machine to produce a carriage base (carriage base).

In addition, the surface of the carriage base 2 slightly protruded the crushed material of the waste tire, and unevenness was observed.

As shown in Fig. 1, the carriage 1 includes a carriage base 2, wheels (casters) 3 and 4 provided below the carriage base 2, and a carriage base 2; It is provided with a handle 5 installed on the top.

The wheels 3 are casters which can change directions freely, and two wheels are provided as front wheels of the carriage. In addition, the wheels 4 are fixed wheels which can advance the carriage base in a long direction, and two wheels 4 are provided as rear wheels of the carriage.

The handle 5 is made of a steel pipe, and is provided on the rear wheel side of the carriage base 2 via the hinge 51.

Such a carriage is excellent in impact resistance and cushioning because the carriage base (carriage base) is an elastic body in which a vulcanized rubber body is bonded by a polymer binder. In addition, since the load is hardly damaged and non-uniformity with elasticity is produced by the waste rubber crushed material in which the surface of the carriage base is protruded finely, the load is particularly effective in preventing slipping of the load.

(2nd Example)

Hereinafter, the carriage base with an anti-slip part of this invention and the carriage with an anti-slip part are demonstrated concretely.

As shown in Fig. 17, the carriage base 6 is provided with non-slip plates 20 (21, 22) for recesses formed on the surface of the carriage base.

The non-slip plate 20 (21, 22) has the arrangement structure shown in Fig. 6, and has a depth H2 (depth from the surface 6a of the carriage base to the recess bottom surface 6b of the carriage base). The anti-slip plates 20 (21, 22) are fitted so as to engage the recessed portions 6c of 5 mm. The recess bottom surface 6b of the carriage base and the back surface 20b of the anti-skid | plate 20 are adhere | attached with an adhesive agent. The maximum height H1 from the surface 6a of the carriage base to the surface 20a of the anti-skid plate is 1 mm.

Non-slip plates 21 and 22 were manufactured using green colored rubber chips, urethane binders and polypropylene. First, these components were put into a mixer having a stirring blade at a ratio of 60:20:20 by weight of the polymer, and the polypropylene melted by stirring was sufficiently mixed with a urethane binder to form a mold made of a mold. The non-slip board which colored rubber chips joined together was produced by inflow.

Here, for the colored rubber chip, a pulverized product of a waste solid part made of an end material of a wheel for casters having a size of 0.5 mm to 5 mm or the like was used.

In the carriage base, as shown in Fig. 17, the longitudinally long non-slip plates 21 are arranged one by one on both end sides of the surface, and one large non-slip plate 22 is disposed in the center. In the anti-slip part 22, the punching part 22a has shown the initial "K". Since the carriage base was used without coloring the pulverized product of the black rubber packing used for the window frame, the base for the black carriage floats on the green non-slip portions 21 and 22, and has excellent design effect. Do.

The backside of the carriage base 6 (FIG. 17) also employs a structure having ribs shown in FIG. 4 similarly to the carriage base 2 (FIG. 1).

The carriage base 6 is further provided with reinforcement tools 85 and 89 along the rib. As shown in Figs. 10 and 11, the reinforcement tools 85 and 89 have a rectangular tubular shape, and the reinforcement tools 85 are third and fourth ribs from both sides in the longitudinal direction of the carriage base 6. Two places between the 32 and reinforcement 89 are provided between the first and second ribs 33 from both sides in the short direction. Then, the reinforcing tools 85 and 89 are fixed by the pressure of the four casters 90.

The mounting hole provided in the caster 90 is inserted and attached to the two convex tanks 32a provided in the rib 32, and the caster is installed through the caster mounting hole installed in the rib with a bolt 86 and a nut (not shown). 90 is fixed.

The carriage 7 is provided with the wheels 3 and 4 provided in the carriage base 6 at the lower part of the carriage base 6, and the handle 5 provided in the upper part of the carriage base 6, Since the structure is the same as that of the carriage 1 of the first embodiment, the description thereof is omitted.

(Third Embodiment)

The third embodiment shows another example of the installation structure of the reinforcement port 85 of the carriage base. The reinforcement tool 85 which concerns on 3rd Example is provided in two places along the rib 32 between the 3rd and 4th rib 32 from the longitudinal direction both sides of the carriage base 6. The attachment method is fixed via the plate 88 provided on the carriage base with the bolt 86 and the nut 87, as shown in Fig. 13C.

(Example 4)

The fourth embodiment shows another example of the installation structure of the reinforcement tool of the carriage base. As shown in Figs. 14 and 15, the reinforcing tool 81 according to the fourth embodiment has ribs of the second and the center of the reinforcing tool 81 made of three steel plates from both sides in the longitudinal direction of the carriage base 6. It is embedded in the inside of 32 by insert molding. This makes it possible to assemble the reinforcing holes 81 at the same time as forming the carriage base. In addition, there is no need to prepare a member for fixing separately, and there is little advantage of falling off.

(Example 5)

The fifth embodiment shows another example of the base surface for the carriage to which the anti-slip is attached. As shown in Fig. 7, one non-slip unit for displaying the initials 72a on the four vertically long non-slip plates 71 and the central portion 77 in total, two on both sides of the carriage base surface, as shown in FIG. It is represented by the prevention plate 72 and one horizontally long non-slip plate 73 which displays the company name 73a in the center lower part. The non-slip plate 71 is a vertically long member of 13 cm in length and 1.5 cm in width, the upper two are yellow, and the lower two are red. In addition, the anti-slip board 72 is square with one side 20 cm, and green. The initial portions 72a and K are punched out of the center portion of the non-slip plate 72 in a Thompson shape.

Moreover, the anti-skid board 73 is a horizontally long member of length 2cm and width 12cm, and is blue. The company name 73a of this non-slip plate 73 is also punched out in a Thomson type. Moreover, the carriage base surface 76 is a rectangle of 60 cm in length and 39 cm in width, and is brown. Therefore, the carriage base surface 76 is divided into five colors. For this reason, an anti-slip part exhibits the effect of anti-slip of a load, and it is colorful and exhibits the outstanding effect also in aesthetic view. All of these colors are colored by the manufacturing method of said colored rubber chip.

Here, at the time of manufacture of the base for a carriage, all the convex metal mold | die for forming the recessed part which installs a non-slip | plate for sliding is an insertion type. Therefore, when only a part of these non-slip plates is used, it can be manufactured by inserting through the unused portion a blocked mold which becomes the surface having the same height as the carriage base surface 76.

(Example 6)

On the surface of the carriage base 8 of the sixth embodiment, as shown in Fig. 2, the non-slip plate 27 containing the company name 27a has the same height as the surface of the carriage base 8. It is installed to be on the side of. The company name 27a of the anti-skid plate 27 is punched in a Thompson type. The non-slip plate 27 uses the same material as the base for the carriage, and is formed by pressing after stirring using a mixing device. However, since stirring is not performed as much as when the carriage base is formed, the unevenness of the surface is larger than the surface of the carriage base. The anti-skid board 27 is a horizontally long member of 2 cm in length and 12 cm in width, and is green. The size of the carriage base 2 is 60 cm long, 39 cm wide and black. The anti-skid plate 27 has less anti-slip effect than the non-slip plates 21 and 22 obtained by the inflow molding. Both the anti-slip effect of the load with respect to the traveling direction of the carriage, and the effect that helps the operation of sliding the load off the carriage can be provided. Moreover, it has a design effect which exhibits the aesthetic effect by the contrast of the color which shows the identification effect, the propagation effect, and the expectation substrate for a carriage which display a company name.

In addition, the carriage 7 includes wheels 3 and 4 provided below the carriage base 8 and the carriage base 8, and a handle 5 provided above the carriage base 8. Since the structure is the same as that of the carriage 1 of 1st Embodiment, the description is abbreviate | omitted.

In addition, in this invention, it is not limited to what is shown to the said Example, According to the objective and a use, it can be set as the aspect changed variously within the scope of the present invention. For example, the anti-slip part and the non-slip plate shown in each drawing are not limited to the shape of the letter, but may be in the shape of an arbitrary illustration or shape.

According to the carriage of the present invention, the carriage base for loading the cargo or the like has a polymer matrix and a base for carriage having a vulcanized rubber body dispersed in the polymer matrix, and thus has excellent impact resistance and cushion resistance. In addition, the load is hard to be damaged and slippery.

Therefore, compared with a carriage made of plastic (hereinafter, referred to as a "traditional product") of a conventional carriage, for example, when pressing a carriage on which a load is loaded and passing a stepped road surface, Even when the load falls from the upper portion of the carriage base due to the impact, the load of the load is less likely to fall because the shock is absorbed according to the carriage of the present invention. In addition, in the case of the conventional products, when the uneven surface passes over the asphalt, the vibration is always transmitted to the hand, whereas according to the carriage of the present invention, the carriage base absorbs the vibration, and thus the vibration holds the handle of the carriage. There is a characteristic that is hard to come to. In particular, it is difficult to make noise due to vibration, so that it can be quietly conveyed compared with conventional plastic and metal carriages.

In addition, when the base for the carriage is obtained by stirring the vulcanized rubber body and the polymer matrix material after stirring, the temperature of the vulcanized rubber body and the polymer matrix material as raw materials can be uniformly raised, and thus the raw material with heating Degradation can be suppressed. For this reason, the base for a carriage can be made uniform, and the carriage base can be prevented from weakening partially.

Moreover, when the recessed part is formed in the surface of the carriage base, and the non-slip part couple | bonded with the said recessed part is inserted, the outstanding anti-slip effect can be exhibited.

In addition, when the surface of the anti-slip part is larger in roughness than the surface of the carriage base, the effect of the anti-slip is more excellent.

In addition, if the non-slip part has a shape or a step representing a character, a figure or a symbol, or a combination thereof, the design is excellent and the effect of helping to identify the carriage is also provided.

In addition, when the polymer binder is used as the polymer matrix material in forming the carriage base, the impact resistance and the cushion resistance are excellent.

In addition, when the vulcanized rubber body to be used is waste rubber, the waste rubber can be reused as a raw material for the carriage base, thereby reducing the final waste volume of the waste rubber, which is suitable for environmental protection.

In addition, in the case where the vulcanized rubber body is a fragment, many kinds of rubber products can be reused, which further reduces the final waste volume and is suitable for environmental protection. In addition, since the non-uniformity of elasticity is produced by the waste rubber crushed material which protrudes finely on the surface of the carriage base, it is especially effective as a slip prevention of a load.

When a long plate-shaped rib is provided on the rear surface of the carriage base, the carriage can be excellent in strength and able to withstand a large load.

Moreover, when the reinforcement tool which consists of an elongate member on the back surface of a carriage base is a carriage base provided along the said rib, it becomes more excellent in strength.

In addition, the carriage base in which the rib is made of a reinforcing tool made of a long member on its inner surface is provided with a reinforcing tool at the same time as the forming of the carriage base. Can be. In addition, since the reinforcement is difficult to expose, the appearance is excellent.

In addition, when the reinforcing tool is made of iron, resin, or wood, it is easy to install on the base for the carriage and maintain the strength.

According to the manufacturing method of the carriage base and the carriage base provided with a non-slip part of this invention, when manufacturing the carriage base which has a recessed part of another shape, for example, a large carriage base by the operation of replacing an insertion part. The carriage base provided with the non-slip part of various shapes can be manufactured easily, without needing a some metal mold | die.

According to the manufacturing method of the carriage base provided with the caster mounting recess or through hole of this invention, even if the position of a caster mounting hole is different, it is manufactured by replacing an insertion part in the mold used when manufacturing a base for a carriage. Therefore, it is possible to easily produce a carriage expectations adapted to various types of casters without requiring a plurality of molds for the large carriage base.

According to the carriage of the present invention, the carriage base and the caster provided below the carriage base can be used as a carriage for carrying loads, thereby providing both the effects of the carriage base.

Claims (19)

A carriage base comprising a polymer matrix and a carriage base having a vulcanized rubber body dispersed in the polymer matrix. The said carriage base is made by putting the said vulcanized rubber body and a polymer matrix material into a mixing apparatus provided with a stirring blade, and stirring it, and after that, obtained by press-molding the said vulcanized rubber body and the said polymer matrix material. Expectation for the carriage. The non-slip portion according to claim 1, further comprising a non-slip portion provided in a recess formed on a surface of the carriage base. The anti-slip part is a carriage base comprising a vulcanized rubber body having a particulate or chip shape and a polymer binder for bonding the vulcanized rubber body. The carriage base according to claim 3, wherein the surface roughness of the surface of the anti-slip portion is larger than the surface roughness of the surface of the carriage base. The carriage base according to claim 3, wherein the anti-slip portion has a shape representing a character, a figure or a symbol, or a combination thereof. The carriage base according to claim 2, wherein the polymer matrix material is made of a polymer binder. The carriage base according to claim 1, wherein the vulcanized rubber body contained in the carriage base is made of waste rubber. The carriage base according to claim 1, wherein the vulcanized rubber body contained in the carriage base is a piece of powder. The carriage base according to claim 3, wherein the vulcanized rubber body contained in the anti-slip portion is made of waste rubber. The carriage base according to claim 1, further comprising a caster mounting recess or a through hole on a surface of the carriage base. The carriage base according to claim 1, wherein a plurality of long plate-shaped ribs are formed on at least one of the longitudinal, transverse, and inclined directions on a surface of the carriage base. The carriage base according to claim 11, wherein a reinforcing ball made of an elongate member is provided along the rib on the rear surface of the carriage base. The carriage base according to claim 12, wherein the reinforcing tool is made of iron, resin, or wood. 12. The carriage base according to claim 11, wherein at least one of the plurality of ribs includes a reinforcing tool made of an elongated member therein. The carriage base according to claim 14, wherein the reinforcement tool is made of iron, resin, or wood. It is a manufacturing method of the carriage base of Claim 3, By using a mold having an insertable mold capable of forming an uneven shape and detachable therein, and supplying a composition comprising a vulcanized rubber body and a polymer matrix material to produce a plate-shaped carriage base having a recess on the surface Fair, A step of fixing the anti-slip part comprising a vulcanized rubber body having a particle shape or a chip shape and a polymer binder for bonding the vulcanized rubber body to the uneven portion of the carriage base is provided. Way. It is a manufacturing method of the base for carriage of Claim 10, Using a mold having an insertable mold which is capable of forming an uneven shape or a through hole and a detachable insert therein, the composition comprising a vulcanized rubber body and a polymer matrix material is supplied to have a recess or a through hole for installing a caster on the surface thereof. The manufacturing method of the carriage base characterized by including the process of manufacturing the base for plate-shaped carriages. A carriage comprising the carriage base according to claim 1 and a caster provided below the carriage base. A carriage comprising the carriage base according to claim 3 and a caster provided below the carriage base.

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