JPH02128809A - Deflashing device - Google Patents

Abstract

PURPOSE:To contrive automatic discharge of flashes present within, by a method wherein a synthetic resin molding is held by a clamp device provided on an arm, a pair of its surfaces running parallel with each other are positioned vertically and turned. CONSTITUTION:A pallet 26 within which removed flashes are present abuts against a stop plate 21b of a stopper device 21 on the opposite side by passing between clamp tables 12a, 12b provided on arms 11a, 11b by moving over a carrying-in roller conveyor device 20. The pallet 25 is lifted up by riding on the lower clamp table 12b which is raised by an action of a piston device 13, pressure-contacted with the upper clamp table 12a and held by placing between the clamp tables 12a, 12b. Sprockets 33a, 33b are lowered and conveyor chains 22a, 22b are tilted. The arms 11a, 11b are turned by 90 deg. with a motor 31 and both surfaces of the pallet 25 becomes vertical. The clamp table 12a and pallet 25 are turned by actuating a piston device 16. The inside flashes are dropped through an opening in the side of the circumference and discharged.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a burr removing device, and more particularly to a device for discharging burrs from the inside of a synthetic resin molded product having an opening on the peripheral side surface through the opening.

(Prior art) As a synthetic 11M @ molded product with an opening on the peripheral side,
For example, there are pallets that are used to load cargo and move it using a forklift or the like. Some of these covered pallets are formed by welding two upper and lower pallet forming members (skits) together using a heat welding machine and welding them together. At this time, the excess melt on the abutting surfaces of each skit (approximately the center of the pallet girder) protrudes to the surrounding side surfaces, and when it cools and solidifies, it becomes a burr. Such burrs appear all around the pallet and on the inner surface of the fork insertion opening, which is not aesthetically pleasing and reduces commercial value. Therefore, this burr is removed by an automatic deburring machine or manually by a worker, but in this burr removal process, the removed burr is deposited inside the pallet, and it is also manually discharged to the outside by the worker. Was.

(Problem II to be Solved by the Invention) However, such discharge of burrs from inside the pallet is a very labor-intensive and time-consuming operation, which poses a problem in the productivity of the pallet.

SUMMARY OF THE INVENTION The object of the present invention is to provide a burr removing device that automatically discharges burrs existing inside a synthetic resin molded product from an opening on a peripheral side surface. be.

(Means for Solving the Problems) The present invention is a burr removal device that discharges burrs from the inside of a synthetic resin molded product having a pair of parallel upper and lower surfaces through an opening provided on a peripheral side surface, at least one arm extending into a space above or below the upper surface or the lower surface; [ii) a clamping device provided on the arm and clamping the synthetic resin molded product; - a longitudinal axis of the arm or parallel thereto; The device includes a device that rotates the arm with an axis as a rotation center axis, and a device that rotates the clamp device.

Furthermore, in addition to the above-described invention, the present invention is characterized in that the molded product is clamped from above and below by two clamp devices provided on two arms extending to the upper and lower surfaces of the synthetic resin molded product. do.

(Function) According to the deburring device of the present invention, the synthetic resin molded product is held by the clamp device provided on the arm. Next, either the clamping device or the arm is rotated to position the pair of parallel upper and lower surfaces of the synthetic resin molded product in a vertical plane, and then either the clamping device or the arm is rotated to stop the synthetic resin molding. When the article is rotated with its upper and lower surfaces located in a vertical plane, the burr inside the synthetic resin molded article falls through the opening solely by its own weight and is discharged.

(Embodiments) Hereinafter, the deburring device of the present invention will be described in more detail with reference to embodiments shown in the accompanying drawings.

The burr removal device of the present invention discharges burrs from the inside of a synthetic resin molded product having a pair of parallel upper and lower surfaces and an opening formed in the peripheral side surface through the opening in the peripheral side surface. In each of the embodiments described in , a plastic pallet for carrying cargo and the like as a synthetic resin molded product is taken as an example.

FIG. 1 shows a deburring device 3 according to a first embodiment of the present invention.
0 is shown. This deburring device w30 includes two arms 11a and flb arranged vertically with an interval between them. These arms 11a.

11b are connected at one end to form a single unit, and have a U-shape when viewed from the front.

Clamp tables 12a and 12b are arranged on opposite sides of the tips of arms lla and llb, respectively, and the lower clamp table 12b is rotatably attached to a rod 511 of a piston device 11g fixed to arm llb. A clamp table 12a is attached to the upper arm lla by the actuation of the piston device 13.
approach from a distance. On the other hand, the upper clamp table 12a is supported by a rotating shaft 14 attached to one end passing through the arm lla, a crankshaft 15 connected to the other end, and a piston rod connected to the crankshaft 15. Piston device 16 whose end is pivotally connected to arm lla
It is said that it can be rotated by.

The integrated arms 11a, . . .llb are connected to and supported by a drive shaft 31a of a motor 31 installed on the pedestal 18 adjacent to the connecting end thereof.

That is, the drive shaft 31a of the motor 31 is the arm 11a.

Upper and lower arms 11a extend in the longitudinal direction of 11b.

It is connected to the center of the end wall connecting 11b. Therefore, this integrated upper and lower arms 11a.

11b is rotated with the longitudinal axis passing therebetween as the rotation center axis.

The pedestal 18 has two arms lla and 12b with clamp tables 12a and 12b provided at the ends of the arms lla and llb.
A carry-in roller conveyor 20 is supported which carries in pallets in a horizontal state from the sides of la and llb (upward as seen in FIG. 1). This carry-in roller conveyor 20 has a central axis of its carry-in route that is connected to the clamp tables 12g, 12.
The power is distributed so as to pass through the center of b when viewed from above,
A clamp table 12 is mounted on the pedestal 18 on the opposite side of the arms lla and llb, which is an extension of this carry-in route.
The stopper device 21 is supported so that the pallet carried between the clamp tables 12m and 12b is stopped with its center located at the center of the clamp tables 12m and 12b. This stopper device 21 includes a stop plate 21b movably supported by the piston rod of the air piston device 21a in the same direction as the above-mentioned carry-in path, and the stop plate 21b is perpendicular to the direction of the carry-in path and on the side surface of the pallet. are arranged so that they are in contact with each other. The position of the stop plate 21c is adjusted by the air piston device 21a according to the size of the pallet.

Since the arms lla and llb are configured to rotate in that position, the carry-in roller conveyor device 20 is supported by the piston device 32 as shown in FIG. 2, so that the entire conveyor device 20 can be moved up and down. It is said that

On both sides of the two integrated arms lla, llb, a pair of chains 22a, extending in the longitudinal direction, are provided.
22b is located. This pair of chains 22
A and 22 b are made endless by sprockets placed at both ends, and the pallets from which burrs have been discharged are placed on the clamp tables 12 a and 12 b.
One end is located near the outermost frame member of the frame 18 in the longitudinal direction of arms lla and llb, and the other end is located slightly closer to the connecting end than the middle part in the longitudinal direction of arms lla and llb. , the spacing is somewhat smaller than the width of the pallet.

These conveyance chains 22m and 22b also have a 1-mm structure in which pallets are clamped between clamp tables 12a and 12b.
When the a and llb are rotated around the drive shaft 31a, the pallets collide, so the sprockets 33a and 33b arranged on the outlet side are supported on the upper ends of the piston rods of the piston devices 34a and 34b so that they can move up and down. There is.

Upper arm l at the top of the input roller conveyor 20
As shown in FIG. 3, on the side of la, the pallet conveyed on the carry-in roller conveyor 20 is transferred onto support rollers 23m and 23b, and a clamp table 1 is placed on the side of the la.
A device 24 for effectively transmitting the moving force from the carry-in roller conveyor device 20 to the pallet is attached so as to be pushed between the pallets 2a and 12b. In short, this device 24 is a conveyor belt in which each roller is rotated by receiving a driving force.
- The upper surface of the pallet entering between the arms lla and llb is pressed against the roller conveyor 20, and the conveying force from the carry-in roller conveyor 20 is effectively transmitted to the pallet until the pallet passes through. .

Therefore, this device 24 will be referred to as a pallet pressing device, and its configuration consists of a pair of support members 24b and 24c, each holding a pressing roller 24m at one end, and the other end of which is fixed to a rotating shaft 24d. 24cjl upper arm l
It is rotatably supported by a bracket 24e attached to the side of la. A substantially upright lever 24f is provided on the rotation shaft 24d, and the upper end of the lever 24f is connected to a piston rod of a piston mount 24g supported on the upper surface of the arm lla.

Next, the operation of the deburring device 30 according to the above-described embodiment will be explained with reference to FIGS. 4(a) to 4(b), which schematically show the present device.
).

When the pallet 25 with the burrs removed inside moves on the conveyor device 20, the piston device 24g of the pallet pressing device 24 lowers the pressing roller 24m, and the pallet 25 is pressed onto the upper surface of the pallet 25. A pressing force is applied to strongly press the pallet 25 against the drive roller of the input roller conveyor device 20. As a result, pallet 25
The clamp table 12& provided on the arms 11a and llb.

12b8 and comes into contact with the stop plate 21c of the stopper device 21 on the opposite side. At that time, the pallet 25 is inserted between the clamp tables 12g and 12b in the arms lla and llb with the short width side along the carrying path direction as shown by the solid line in FIG. 1, and the stopper device 21 It is stopped by a stop plate 21c so that its center coincides with the center of the clamp tables 12m and 12b. Then, the pallet 25 is lifted by riding on the lower clamp table 12b which is raised by the operation of the piston device 13 as shown in FIG.
As shown in b), it is pressed against and clamped by the upper clamp table 12a.

After that, as shown in Fig. 4(b), the sprocket) 3
3a, 33b are lowered by piston devices 34a, 34b, and the conveying chains 22a, 22b are tilted.

Next, the motor 31 causes the arm 115 to rotate the llb by 90 degrees as shown in FIG.
In other words, the pallet 25 is placed in a vertical position so that both sides thereof are vertical. In this state, the piston device 16 is operated to rotate the clamp table 12a, thereby rotating the pallet 25. As a result, the internal burr falls exclusively by its own weight through the opening on the peripheral side and is discharged.

When the discharge of burrs is completed, the rotation of the pallet 250 is stopped so that the long width side of the pallet crosses between the conveyor chains 22a and 22b as shown by the chain line in FIG. 1, and the motor 31 is driven to move the arm. Return lla and llb to their original positions.

At the same time, the outlet side sprockets 33a, 33b of the conveyor chains 22a, 22b are connected to the piston device 34m.
, 34b again to position the chain horizontally, and at the same time, the input roller conveyor device 20 is lowered by the piston device 32 to a position where the conveying surface is lower than the chains 22m, 22b. Thereafter, the clamp table 12b is lowered by the piston device 113, the pallet 25 is placed on the conveyance chains 22a, 22b, and the conveyance chains 22a, 22b are driven to remove the pallet 25.
is discharged from between arms lla and llb. Then, the carrying-in roller conveyor device 20 is raised again to a position where its conveying surface is higher than the chains 22m and 22b, and the next pallet is fed between the arms lla and llb.

In the embodiment described above, the pallet 2 is clamped by the clamp tables 12a and 12b supported by the arms lla and llb.
5 (a).
) may be a clamping device 35 that clamps the peripheral side surfaces of the pallet from opposite sides using U-shaped holders 36a and 36b.

This clamping device 35 includes a pair of piston devices 37m and 37b whose rear ends are fixed to a rotating shaft 14 supported by an upper arm lla and which extend in opposite directions. , 37b via L-shaped connecting members 38a, 38b so as to face each other.

The deburring device 4 includes the lamp device 35 as described above.
0, the pallet 25 is the arm 11a.

11b, the support table 41, which is constructed exactly like the lower clamping table 12b described in the first embodiment, lifts the pallet 1.25 to a predetermined height and then lifts the pallet 1.25 to a predetermined height. Holding Ji by actuation of piston devices 137a and 37b as shown in bl.
4c 36a and 36b are brought into contact with the peripheral side surfaces of the pallet 25 from opposite sides and held therebetween. The subsequent operation is the same as that of the deburring device 1130 of the first embodiment, so its explanation will be omitted.

As is clear from such embodiments, in the first embodiment, the clamping devices are the upper and lower arms 11a.

Two clamp tables 12a supported by 11b.

12b, but in the embodiment shown in Fig. 5 [a], the clamping device is configured so that it can be attached and operated only to the upper arm, and the table located below is used only for lifting the pallet. Since it is not particularly necessary, two arms are not necessarily required.

Furthermore, in the second embodiment, arm 11. A and llb are arranged one above the other so that a horizontally placed pallet is held between the upper and lower surfaces. However, the distance between the pair of a and llb is widened and placed horizontally, and the relative position on the side surface around the pallet 25 is widened. The opposite side may be clamped with a clamp table. Of course, in that case, the order of operation of the deburring device would be different. That is, the vertical positioning of the pallet 25 is performed by rotating the clamp device, and the rotation of the pallet 25 for removing burrs is performed by rotating the entire arm by the motor 31. However, this difference in the operation order is only to correspond to the initial holding state (holding posture) of the pallet relative to the arm, and the device configuration is substantially the same as that of the first embodiment, although there are dimensional changes. There is no change.

(Effect of the invention) As explained above, according to the deburring device of the present invention,
Synthesis 4 with openings on the surrounding sides! fff! It is possible to automatically remove burrs inside molded products without using human hands.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing a deburring device according to a first embodiment of the present invention, FIG. 2 is a schematic side view of the deburring device shown in FIG. 1 seen from the side during operation, and FIG. 3 is a front view showing the pallet suppressing device of the deburring device shown in FIG. 1, and FIGS. 4(a) and 4(b) are illustrations for explaining the operation of the deburring device shown in FIG. FIG. 5 (al) and FIG. 5(b) are respectively diagrams showing the structure of the deburring device in a simplified manner for explaining its operation. It is a configuration explanatory diagram for explaining the operation. 30.4G... Deburring device, lla, llb...
Arm, 12m, 12b...Clamp table, 14
...Rotating shaft, 15...Crankshaft, 16...Piston device, 31m...Drive shaft, 31...Motor. Fig. 1 Fig. 2 Ita, Ilb: 7-m 31a' rotation gnu Fig. 4 Fig. Ca) Fig. 4 (6)

Claims (2)

[Claims] (1) A burr removal device that discharges burrs from the inside of a synthetic resin molded product having a pair of parallel upper and lower surfaces through an opening provided in a peripheral side surface, the device comprising: (i) a space above or below the upper or lower surface; (ii) a clamp device provided on the arm to clamp the synthetic resin molded product; (iii) a longitudinal axis of the arm or an axis parallel thereto as a rotation center axis; A deburring device comprising: a device for rotating the arm; and (iv) a device for rotating the clamp device. (2) The deburring device according to item 1, wherein the molded product is clamped from above and below by two clamp devices provided on two arms extending to the upper and lower surfaces of the synthetic resin molded product.