KR200311601Y1 - Hand car type pallet - Google Patents

Abstract

The present invention relates to a hand car type pallet, and the hand car type pallet according to the present invention has a cross-shaped area between the center column of the upper surface of the rectangular body and the center column of four peripheral portions of the lattice type in which longitudinal and transverse ribs intersect. It is formed of a reinforcement structure, the upper, lower surface portion and the pillar portion is a lattice-shaped reinforcement structure as a whole, the inner circumferential surface of each of the lower surface openings are formed in all four sides are formed as inclined surface except the corner portion. The hand car type pallet according to the present invention has a cross-shaped area between the center column of the top surface of the rectangular body and the center pillars of four peripheral portions formed in a lattice reinforcement structure in which longitudinal and transverse ribs intersect, so that the top and bottom of the rectangular body are Since the surface is made of a lattice-shaped reinforcement structure as a whole, the overall mechanical uniformity is not uniform, and thus the upper surface of the pallet is not bent or crushed even when a heavy material is loaded. There is an advantage to this.

Description

Hand car type palette {HAND CAR TYPE PALLET}

The present invention relates to a hand car type pallet, and in particular, a cross-shaped area between the center column of the top surface of the rectangular body and the center column of four peripheral portions is formed by a lattice reinforcement structure in which longitudinal and transverse ribs intersect to form a rectangular body. The upper and lower sides and the pillars form a lattice reinforcement structure as a whole, and the inner circumferential surface of each of the lower surface openings is formed to form inclined surfaces on each side except the corner portion to increase the strength strength and extend the service life. It is about a car type palette.

In general, the hand car type pallet is formed of a unidirectional rib structure in which a part of the upper surface of the rectangular body is formed of a longitudinal rib or a unidirectional rib of a lateral rib, so that the mechanical strength is not uniform as a whole and partially weak. It was to shorten the service life.

19 to 21 show such a conventional hand car type pallet, a plan view of the pallet is shown in FIG. 19, a cross-sectional view taken along line BB of FIG. 19, and a partial plan view of the pallet is shown in FIG. Is shown.

As shown in the drawing, in the conventional hand car type pallet 10, the rectangular main body 10a, when viewed from above, is formed with a passage 11 that forms a well sperm shape. Two side openings 11a constituting the inlet of 11 are respectively formed, and four lower surfaces exposed downwards at intersections where the longitudinal and transverse passages of the well sperm passage 11 meet at the lower portion of the rectangular body 10a. While the opening 11b is formed, the inner circumferential surface of the lower surface opening 11b is formed with the inclined surface 11c on the four sides except for the corner portion, and the inner circumferential surface of each side opening 11a is also formed with the inclined surface 11d.

Then, between the central portion, the corner portion and the corner portion of the rectangular body 10a, pillar portions 13; 13a, 13b, and 13c which integrally connect the upper surface portion 14 and the lower surface portion 15 are formed, and the rectangular body The top and bottom portions 14 and 15 of the well sperm passage 11, the side opening 11a, the bottom opening 11b and the columnar portion 13 are formed at the longitudinal and transverse ribs, respectively. It is formed by a plurality of lattice-shaped reinforcement structure, the interior of the intermediate pillar portion 13c between the central pillar portion 13a, the corner pillar portion 13b, and the corner pillar portion 13b also has a grid-like reinforcement structure. Formed.

Since the conventional pallet 10 is formed in a single rib structure in which the cross-shaped area 14b is formed of longitudinal or lateral ribs, respectively, the mechanical strength is lowered, and thus the rectangular body 10a is loaded as the heavy material is loaded for a long time. Bending and crushing occur, which shortens the service life.

As such, the structure of the cross-shaped area of the upper surface of the handcar type pallet plays an important role in handling load and service life. Due to the difficulty in application, the cross-shaped region could not be formed into a lattice of longitudinal and transverse cross rib structures, but had to be formed into a single rib structure.

The present invention devised to solve the above problems and defects as described above, the cross-shaped region between the central pillar portion of the upper surface of the rectangular body and the central pillar portion of the four peripheral portions, the grid shape in which the longitudinal ribs cross The upper, lower and column portions of the rectangular body form a lattice reinforcement structure as a whole by forming a reinforcing structure, and the inner circumferential surface of each of the lower surface openings is formed so as to form inclined surfaces, except for corner portions, to increase strength. It is an object of the present invention to provide a hand car type pallet that can extend its service life.

1 to 5 show an integrated pallet according to the present invention,

1 is a perspective view of a pallet.

2 is a top view of a pallet.

3 is a bottom view of the pallet.

4 is a cross-sectional view taken along the line A-A of FIG.

5 is a partial plan view of FIG. 2.

6 and 7 are explanatory diagrams of using the pallet according to the present invention.

8 to 18 is a view showing the configuration and operation of the mold for producing a pallet according to the present invention,

8 is an overall longitudinal cross-sectional view of the mold.

9 is an explanatory diagram of a product molding operation by a core;

10 is a plan view of an upper disc.

Figures 11 (a), (b) and (c) are partial plan views, longitudinal cross-sectional views and cross-sectional views showing an extract of one phase core;

12 is a plan view of the lower disc.

Figure 13 is a plan view showing the assembly form of the main slide core.

14 is a plan view showing the insert core portion;

15 and 16 are diagrams illustrating the operation of the insert core.

17 is an assembled perspective view of the insert core.

18 is an exploded perspective view of the insert core;

19 to 21 shows a conventional hand car type palette,

19 is a plan view of a pallet.

20 is a cross-sectional view taken along the line B-B in FIG. 19;

21 is a partial plan view of a pallet.

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

10: pallet 10a: rectangular body

11: well sperm passage 11a: side opening

11b: lower surface opening 11c: inclined surface

13; 13a, 13b, 13c: pillar portion 14: upper surface portion

14a: cross section 15: bottom part

101: cavity 110,130: upper and lower disc

120,140: Upper and lower core 135: Insert core insertion hole

137: slide groove 160,170: upper and lower fastening plate

200: molten resin supply member 310,320: long and short slide core

340: slide block 400: insert core

410: hydraulic cylinder 420: fastening plate

430: Slide connector 440,460: Slide guide rail

450: inner slider 452: edge portion

453,454: Rail Grooves

In order to achieve the above object, the hand car type pallet according to the present invention has a plurality of pillar portions and a well sperm passage formed between an upper surface portion and a lower surface portion of a rectangular body, and the sides forming an inlet portion of the well sperm passage on all sides. An opening is formed respectively, and the lower surface of the rectangular body of the hand car type pallet is formed in the lower surface of the four sperm-shaped passage, the lower surface opening is exposed downwards at the intersection where the longitudinal passages meet, the upper surface portion of the rectangular body The cross-shaped area between the central pillar and the four central pillars is formed in a lattice reinforcement structure in which longitudinal and lateral ribs intersect. The upper and lower portions and the pillar portion form a lattice reinforcement structure as a whole. The inner circumferential surface of the opening is constituted by four sides being inclined surfaces except for the corner portion.

Hereinafter, with reference to the accompanying drawings of the present invention in detail as follows.

1 to 5 show an integrated pallet according to the present invention, in which FIG. 1 is a perspective view of the pallet, FIG. 2 is a plan view of the pallet, FIG. 3 is a bottom view of the pallet, and FIG. 4 is an AA line of FIG. A cross-sectional view is shown, and FIG. 5 shows a partial plan view of FIG. 2.

6 and 7 illustrate the use of the pallet according to the present invention. First, referring to FIGS. 6 and 7, the hand car type pallet 10 according to the present invention uses the hand car 50. Will be treated. In addition, the hand car 50 is provided with a handle portion 52 on one side of the main frame 51, a wheel leg 53 is provided below the main frame 51, the wheel at the lower end of the wheel leg 53 54 is provided.

When loading the conveyed object on the pallet 10 and using the hand car 50 to transfer the hand car 50 into the side opening 11a of the pallet 10 as shown in FIG. 7, FIG. As shown in Fig. 6, the main frame 51 is formed by protruding the wheel 54 of the hand car 50 through the lower opening 11b of the pallet 10 and extending the wheel leg 53 of the hand car 50. After contacting the upper side of the pallet 10, the hand car 50 is moved to convey the pallet 10.

Hereinafter, referring to FIGS. 1 to 5, the pallet 10 according to the present invention has a rectangular main body 10a formed with a passage 11 forming a well sperm when viewed from above. Two side openings 11a constituting the inlet of the well sperm passage 11 are formed, respectively, and the lower portion of the rectangular body 10a is downward at an intersection where the longitudinal and transverse passage portions of the well sperm passage 11 meet. Four exposed lower surface openings 11b are formed, and the inner circumferential surface of the lower surface opening 11b is formed as inclined surfaces 11c, except for corner portions, and the inner circumferential surface of each side opening 11a is also inclined surface 11d. Formed.

Then, between the central portion, the corner portion and the corner portion of the rectangular body 10a, pillar portions 13; 13a, 13b, and 13c which integrally connect the upper surface portion 14 and the lower surface portion 15 are formed, and the rectangular body The top and bottom portions 14 and 15 of the well sperm passage 11, the side opening 11a, the bottom opening 11b and the columnar portion 13 are formed at the longitudinal and transverse ribs, respectively. It is formed by a plurality of lattice-shaped reinforcement structure, the interior of the intermediate pillar portion 13c between the central pillar portion 13a, the corner pillar portion 13b, and the corner pillar portion 13b also has a grid-like reinforcement structure. Formed.

Here, when comparing the pallet of the present invention shown in Figures 1 to 5 and the conventional pallet shown in Figures 19 to 21, the pallet 10 according to the present invention is a central column ( The cross-shaped area 14a between 13a) and the four central pillars 13a is formed in a grid-like reinforcement structure in which longitudinal and lateral ribs intersect. However, the conventional pallet 10 has a cross-shaped area 14b. Each is formed in a single rib structure with longitudinal or transverse ribs.

If the cross-shaped region 14a of the upper surface portion 14 that forms the rectangular body 10a as the present invention has a lattice reinforcement structure in which longitudinal and lateral ribs intersect, a heavy object can be transported while using the pallet 10 for a long time. Even when loading, since the upper surface portion 14 of the pallet 10 is not bent or crushed, it can be used stably for a long time.

However, when the cross-sectional area 14b of the upper surface portion 14 constituting the rectangular body 10a has a single rib structure by unidirectional ribs, as in the conventional pallet, the mechanical strength strength is lowered and thus the heavy weight is loaded for a long time. Bending and crushing occur in the rectangular body 10a, which shortens the service life.

Therefore, the structure of the cross-shaped areas 14a and 14b of the upper surface portion 14 in the pallet is an important part for determining the size of the cargo that can be handled and the service life.

In this way, the structure of the cross section of the upper surface of the handcar type pallet plays an important role in handling load and service life. Due to the difficulty in application, the cross-shaped region could not be formed into a lattice of longitudinal and transverse cross rib structures, but had to be formed into a single rib structure.

8 to 18 is a view showing the configuration and operation of the mold for producing a pallet according to the present invention, Figure 8 is an overall longitudinal cross-sectional view of the mold, Figure 9 is a diagram illustrating the product forming action by the core, Fig. 10 shows a plan view of the upper disc, and Figs. 11 (a), (b) and (c) show a partial plan view, a longitudinal cross-sectional view and a cross-sectional view showing one phase core, respectively, and Fig. 12 shows a plan view of the lower disc, respectively. .

13 is a plan view showing the assembly form of the main slide core, FIG. 14 is a plan view showing the insert core portion, FIGS. 15 and 16 are explanatory views of the operation of the insert core, and FIG. 17 is an insert. Assembled perspective view of the core, Figure 18 shows an exploded perspective view of the insert core, respectively.

As shown in this, in the mold 100 for producing a pallet according to the present invention, the upper core 120 is fixed to the lower part of the upper disc 110, and the lower core 140 is fixed to the upper part of the lower disc 130. The upper and lower discs 110 and 130 are coupled to the upper and lower fastening plates 160 and 170 which are fastened to the injection machine, respectively.

In addition, the upper fastening plate 160 is provided with a molten resin supply member 200 including a sprue 201, a runner 202, and a gate 203 for supplying and injecting molten resin.

The lower fastening plate 170 is provided with an insert core 400 which can form a hand car hole, that is, a lower surface opening 11b and a slope section, that is, a peripheral inclined surface 11c of the lower surface opening 11b, below the product. In addition, the long slide core 310 and the short slide core 320 of the main slide core 300 to form a product portion between the upper core 120 and the lower core 140 slide left and right on the lower disc 130. When coupled to each other, the long and short slide cores 310 and 320 are operated by the hydraulic cylinder 330 and the angular pin 180.

The lower plate 130 and the lower fastening plate 170 is assembled with a mill plate n for pushing the mill pin 151 for taking out the product from the mold 100.

8, 10, and 11 (a), (b), and (c), the upper disc 110 has pockets 111 formed in the center and divided into 21 upper cores 120. ) Is assembled with the block 112 and the bolt 113 in the pocket (111). 16 angular pin holes 114 are provided on the outside of the pocket 111 to assist the operation of the long and short slide cores 310 and 320, and the guide pins for guiding the precise fastening of the mold 100 are assembled. Four guide pin holes 115 are processed.

As shown in FIGS. 8 and 12, the lower disc 130 is assembled with a block 132 and a bolt 133 in which a lower core 140 is divided into 21 parts in the same manner as the upper disc 110. Lose.

In addition, four insert core insertion holes 135 into which the hand car wheel hole of the pallet 10, that is, the lower surface opening 11b and the slope section, that is, the insert core 400 for forming the inclined surface 11c are inserted, are processed. And right next to the insert core insertion hole 135 is a rail installation groove 136 is assembled is assembled a slide guide rail 460 that can operate the inner slider 450, the edge of the lower plate 130 4 In the place, slide grooves 137, which can be operated by sliding the long and short slide cores 310 and 320 to the slide block 340, are processed. The long and short slide cores 310 and 320 have both long and short slide cores when the hydraulic cylinder installation grooves 138 on which the hydraulic cylinders 330 can be mounted are processed on both sides of the lower disc 130. 310, 320 and the hydraulic cylinder 330 is connected to enable operation.

In addition, in the lower plate 130, the mill pin 151, which can be taken out after forming the pallet 10, is formed by uniformly distributing the mill pin holes 130a on the entire surface, and the guide pin holes 130b and the return at four corners. The pinhole 130c is formed.

As shown in FIGS. 14 to 18, the insert core 400 includes an inner slider on the slide guide rail 440 on the slope of the slide connector 430 and assembled on the slide guide rail 440. The rail groove 453 of the 450 is assembled, and the inner slider 450 is assembled to the slide guide rail 460, which is assembled to the lower disc 130, with the rail rail 454 of the lower part, and the four slide connectors 430. There is a guide pin 470 is assembled for the accurate lifting movement of the slide connector 430.

In addition, an edge portion 452 is formed on the slide connector 430 to process the inclined surface 11c of the lower surface opening 11b above the intermediate portion 451.

In addition, the hydraulic cylinder 410 is assembled by a bolt in the assembly hole 431 processed at the center of the slide connector 430, and the hydraulic cylinder 410 is connected to the fastening plate 420 and the bolt on the lower plate 130 again. It is assembled by a vertical movement.

The long and short slide cores 310 and 320 are assembled on the slide block 340 as shown in FIG. 13, and the slide block 340 is slidably coupled to the lower plate 130. The two hydraulic cylinders 330 and 331 having different working distances are connected to the slide block 340 in a state where the hydraulic cylinders 330 and 331 are attached to the lower plate 130 to operate the long and short slide cores 310 and 320.

Referring to the operation of the mold length hand car type pallet for pallet production according to the present invention as described above and the mold value for pallet production thereof are as follows.

When the molten resin is injected through the nozzle of the injection molding machine in a state where all the molds are formed, it is sprayed onto the sprue 201 of the mold and the shape of the product, ie, the pallet 10, is formed through the gate 203 along the runner 202. The cavity 101 is filled, and the pallet 10 is formed through a predetermined cooling time.

As the upper and lower portions of the mold 100 are coupled, the insert core 400 moves along the rails 460 and 440 on which the inner slider 450 is assembled as the slide connector 430 moves forward when the hydraulic cylinder 410 is advanced. , The inner slider 450 opens horizontally, and the inner slider 450 abuts against the long and short slide cores 310 and 320 to form an opening 11b of the lower surface of the pallet 10 and at the edge of the inner slider 450. By 452, the hand car slope surface of the pallet 10, ie, the inclined surface 11c of the lower surface opening 11b of the pallet 10, is formed. In this state, the resin is injected.

When the pallet 10 is formed, the hydraulic cylinder 410 of the insert core 400 operates to retract the inner slider 450 from the lower surface opening 11b of the pallet 10 to detach the upper core 120. ) And the lower core 140 are deformed, and the long slide core 310 and the short slide core 320 are primarily operated by the angular pins 180 and are extended by two kinds of hydraulic cylinders 330 and 331 having different working distances. However, both the slide cores 310 and 320 are separated.

After injection is made to the mold 100 and a certain cooling time has elapsed, when the pallet 10 is taken out, the slide connector 430 is retracted by the hydraulic cylinder 410 and the inner slider 450 is pulled to assemble the rail. Along the 460 and 440, the left and right sides are retracted so that the undercut is terminated and the product can be taken out.

When both the long and short slide cores 310 and 320 of the mold 100 are enclosed, the pallet 10 having a shape is attached to the lower core 140 and the mill 150 is operated by the injection molding machine. (151) Push the pallet 10 is completely taken out from the mold (100).

When the pallet 10 is ejected from the mold 100, the hydraulic cylinder 410 of the insert core 400 is operated to open the inner slider 450 to form a product again, and the long and short slide cores 310, ( 320 is closed and the upper and lower portions of the mold 100 are closed.

As described above, the hand car type pallet according to the present invention has a rectangular cross-sectional area between the central pillar portion of the upper surface of the rectangular body and the central pillar portions of four peripheral portions formed in a lattice reinforcement structure in which longitudinal and transverse ribs intersect. Since the upper and lower surfaces of the main body form a lattice-shaped reinforcement structure as a whole, the overall mechanical uniformity is not uniform, but the overall uniformity of the pallet does not bend or crushed even when a heavy material is loaded. There is an advantage that can be used stably for a long time.

Claims (1)

A plurality of pillar portions 13; 13a, 13b, and 13c and a well sperm passage 11 are formed between the upper surface portion 14 and the lower surface portion 15 of the rectangular body 10a, and the well sperm passage is formed on all sides. Side openings (11a) forming the inlet portion of the (11) is formed, respectively, the lower surface of the rectangular body (10a) four lower surface exposed downward at the intersection where the longitudinal, transverse passage portion of the well sperm passage (11) meets In the hand car type pallet in which the opening 11b is formed, a cross-shaped area 14a between the central pillar portion 13a of the upper surface portion 14 of the rectangular body 10a and the central pillar portion 13a of four peripheral portions. ) Is formed as a lattice reinforcement structure in which longitudinal and lateral ribs intersect, and the upper and lower portions 14 and 15 and the column portions 13 and 13a, 13b and 13c form a lattice reinforcement structure as a whole. The inner circumferential surface of each of the lower surface openings 11b is formed of four inclined surfaces 11c except for corner portions. Lift car type pallet according to claim.