JPS60259316A - Automatic burr removing apparatus for molded article made of synthetic resin - Google Patents

Abstract

PURPOSE:To automatically remove the burrs on the curved surface of a molded article by pressing, for tracing, a head equipped with a cutter onto the part of a molded article from which burrs are to be removed, through a link installed onto a rack base shifting along the molded article. CONSTITUTION:A rack base 11 is shifted and set at the position where the corner part 13a of a link 13 is projected at right angles to a pallet P side, and a head 16 is positioned at a prescribed position of the pallet P. Then, the link 13 is turned by an air cylinder 15, and the guide rollers 19a, 19b, 20a, and 20b of the head 16 are pressed onto the forward side-wall of the pallet P by a prescribed force. At the same time, also an air cylinder 23 is operated to secure the position for the link 13 of the head 16 and to resist the gringing resistance. In this state, the rack base 11 is shifted along the molded article. Therefore, the pivotal installation part 14 is shifted in the direction 27 of arrow, and the burrs on a curved surface can be removed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic deburring device that automatically cuts and removes deburrs generated during molding of synthetic resin molded products, such as plastic pallets.

[Conventional technology]

fLt is a type of plastic nozzle that is formed by abutting two upper and lower nozzle forming members (skits) together using a hot bath bonding machine and welding them together.

At that time, the butt surface of each skit (tt of bread girder)
The excess melt at the center of the pallet protrudes to the sides of the pallet, and when it cools and solidifies, it becomes a burr. Such particles appear all around the pallet and on the inner surface of the fork socket, which is not aesthetically pleasing and reduces the commercial value. For this reason, in the past, workers used a tool such as a cutter to remove the pallets, but this was a very labor-intensive and time-consuming process, which resulted in problems in improving pallet production efficiency.

By the way, as is well known, pallets are used when carrying out cargo handling operations using forklifts, etc.
It has a part called a girder to form a hole large enough to insert the fork metal. The bar IJu appears substantially all around the center of each digit. These girders are formed with a curved surface from the outer surface of the pallet to the inner surface of the fork insertion hole, and the corners of the base plate are also usually formed with a curved surface. Since the above-mentioned paris is formed on such a curved surface, it has been extremely difficult to develop a device that can automatically remove the paris in this area.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide an automatic deburring device that automatically removes Vt existing on surfaces including curved surfaces of synthetic resin molded products.

[Structure of the invention]

The present invention provides an automatic deburring device for removing pars existing on a surface including a curved surface formed on a synthetic resin molded product. a link pivotally attached to the pedestal, and a first rotation force that rotates the link relative to the pedestal about the pivot point with the pedestal or applies an acting force that counteracts the reaction force received by the link. an applying device, a head pivotally attached to the pivoting end of the link, and pivoting the head relative to the link about a pivot point with the link or counteracting a reaction force applied to the head; a second rotational force applying device that applies an acting force;
The blade includes a blade attached to the side surface of the head that is pressed against the surface of the synthetic resin molded article where the edges are present by the acting force of the rotating force applying device, and a guide roller that guides the blade.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of an automatic deburring apparatus for synthetic resin molded products according to the present invention will be explained in more detail below with reference to the accompanying drawings.

Fig. 1&l-j Automatic deburring device for synthetic resin molded products according to an example of the present invention (hereinafter simply referred to as deburring device) 10
It is shown. ' This paring device 10 is made of plastic pallets)
A case will be described in which the cracks occurring on the outer surfaces of the upper and lower skit joints of the two sheets are removed. The deburring apparatus includes a mount 11 that moves in a straight line along the side of the 10-piece pallet (P) shown in FIG. As shown in FIG. 4, the mount 11 is, for example, a table-like structure movably placed on a linear rail 12.

On this frame 11, a relatively elongated triangular plate-shaped link 13 is provided at both corners 1.3a, 13 in the longitudinal direction.
The pedestal 11VC is pivotally mounted near the corner 13c between the mounts 11b and 11c. This pivot point is designated by the reference numeral 14. An air cylinder device 15, which is a first rotational force applying device, is further placed on this pedestal 11 along its moving direction, and the rear end of the cylinder 15a is pivotally attached to the pedestal 11, and the piston rod 15b is attached to the rear end of the cylinder 15a. The end is the corner 13 of the link 13
It is pivoted to b. At this time, air cylinder device 1
5 is arranged so as to be located on the opposite side of the pallet P with the pivot portion 14 of the link 13 relative to the frame 11 as the center. In this case, the corner portion 13a of the link 13 is in a positional relationship such that it projects from the pedestal 11 toward the pallet (P) side, and is rotated around the center of the pivot portion 14 by the operation of the air cylinder device 15.

A corner portion 13a of this link 13 is pivotally connected to a VCI4 head 16. As shown in FIG. 2, this head 16ff has a U-shape in which the opening part is directed toward the rotation direction of the corner part 13a of the link 13, and the pH is 111. Both the upper and lower plates 16a of the head 16 are connected by using the holes 17 formed on the same axis in the direction.
, 16b are pivotally connected to the fork of the corner 13a of the link 13 by means of a pin. This pivot point is designated by the reference numeral 18. Upper plate 16a of head 16,
Relatively large guide rollers 1, 9a, 1 are provided at the open side edge of the lower plate 16b to prevent damage to the side wall of the pallet P when the head 16 moves while being pressed against the side wall.
9b is rotatably attached to the end on the link 13 side, and this guide roller 19a.

Small guide rollers 20a and 20b are rotatably attached to the edges of the upper and lower picture plates at the middle position of the head with an interval of approximately 15 to 32III+ (preferably 28 positions) from 19, t).

A blade 21 for scraping off the edges F formed on the pallet P is further attached to the open portion of the head 16.

As is clear from FIG. 2 and FIG.
It is attached to 1.1 so as to be located on the side opposite to 19a and 19b and close the opening of the head 16. At this time, the cutting edge 21a of the blade 21 is
When the guide rollers 19a, 19b, 20a, 20b are in contact with a flat surface, the guide roller 20a.

20b is located very close to the inner side on the line connecting the contact point C that contacts the core, and the tolerance in the direction of movement is ±
At the same time that the blade 21 is set to about 1 inch, the blade 21 moves the edge F existing on the contact surface of the guide roller to the head 1.
It is inclined to provide a relief angle for continuous scraping as the blade moves.

Further, in the head 6, a connecting piece 22 protruding from the head body is integrally formed on the back plate 16cVC on the opposite side of the blade 21. As shown in FIG. 1, the tip of a piston rod 23a of an air cylinder device 23, which is a second rotational force applying device, is pivotally attached to this connecting piece 22.
A mounting base 24 fixed to the side wall of the link 13 is pivotally attached to the rear end of the cylinder body 23b of the air cylinder device 23. Note that two guide rollers 19 are located at the center of the corner 13a of the link 13 and the pivot portion 18 of the head 16.
a and 20a, and the pivoting portion between the piston rod 23a of the air cylinder device 23 and the connecting piece 22 of the head 16 borders the pivoting portion 18 between the link 13 and the head 16. At +, which is opposite to the guide roller, the center I between the bottle 18 and the guide roller 19a.
A position approximately along the extension of the line connecting b [6]. As a result, the corner portion 13a of the link 13 with the pivot portion 14 as the center
The rotational force is generated by the four kite rollers 19a of the head 16.

19b, 20a, 20b) acts on the head 16 as a pressing force to bring them into stable contact with the slotted surface of the motherlet P, and while the head 16 is moving along the side surface of the i4let P In response to the reaction force that tries to rotate the head 16 with respect to all links 13 due to the cutting resistance that comes to the blade 21 that cuts the head 16, the air cylinder device 23 applies it to the connecting piece 22 of the head 16. This can be effectively countered by the rotational force of

Pants after being formed by such a deburring device 10)
In order to efficiently remove the cracks generated on P, two rails 12 are arranged parallel to each other with an interval between them, as shown in FIG. Rails 1 on both sides of P that are held fixedly
2 are movably arranged with slots F (on both sides of the walls of the groove P).
'trRemove at the same time. Since the movements of each of these deburring devices 10 are exactly the same, the operation of the deburring device 10 (corresponding to FIG. 1) located on the right side of Nonolet) P in FIG. 4 will be explained next. .

Referring to FIG. 4, when the i4let P is set in a predetermined position, the pedestal 11 on the rail]2 is moved onto the rail by an appropriate drive means! and is moved to the position of the front end 12a of the rail 12. At the same time, the rail 12 is completely supported by another rail 2, which fully supports its front end 12a and rear end 12b.
The corner 13a of the slit 13 operates the air cylinder device 15 on the pedestal 11, and the corner part 13a of the slit 13 is moved in the direction of movement of the pedestal 11. When the head 16 is pivoted to the corner 13a and is rotated to a position projecting at right angles to the let PgIll, the head 16 is positioned at the appropriate position on the front side wall connected to the side wall of the let P (the side wall along the rail 12) K. It is adjusted as follows. The link 13 is then connected by the air cylinder device 15 as described above.
The guide rollers 19a, 19b, 20a, 20b of the head 16 are rotated loosely and the corner 13aK of the link 13 is lost.
is a constant acting force of 15Ir (first
(indicated by arrow 26 in the figure). That is, −
At this time, the air cylinder device 15 applies a force of about 50 ky to the link 13 and maintains this force. At that time, the air cylinder device 2 attached to the link 13
The piston rod 23a of No. 3 is also extended from the cylinder main body 23b to maintain the positional relationship of the head 16 with respect to the link 13, and to prepare for the cutting resistance that occurs after the start of cutting, the piston rod 23a of the piston rod 23a is extended from the cylinder body 23b with a force of about 6 mm to extend the head 1 through the piston rod 23ak.
Apply counterclockwise rotational force to 6.

This state, ie, the state shown by the solid line in FIG. 1, is the starting position of the deburring device 10. From this state, the frame 11
is moved on rail 12 toward its original position shown in FIG. As a result, the pivot portion 14 of the link 13 relative to the frame 11 moves in the direction shown by the arrow 27 in FIG. Assume that the link 13 is rotated clockwise about the pivot portion 14 while the rod 15be is contracted. At that time, as the line 28 connecting the link 13 and the head 16 with the pivot 18 and the frame 11 with the pivot 14 moves, the pivot 8 is moved as shown by the arrow 29 in FIG. A force is applied to move in the lateral direction, and this causes the cutting head 16 to move against the front side wall of the cutter P, and the blade 21 cuts off the burr F.

Due to the movement of the link 13 due to the movement of the pedestal 11 and the accompanying rotation, the head 16 moves to the curved part that is the first corner of the pallet P, passes through this and i
Move to the side wall of the 4th let P and continuously remove B', IFk and scratches.

The air cylinder device 15 that controls the movement of the link 13 contracts the piston rod 15b' to allow the link 13 to rotate as the pedestal 11 moves.
The piston rod 15bK is always pressed against the side wall of the plate P, and as a result, the head 16 moves along the side wall of the plate P.

At that time, the air cylinder device 23 that controls the rotation of the head 16 relative to the link 13 also contracts its piston rod 23a'e to allow rotation relative to the link 13 when the head 16 follows the side wall shape of the pants) P. However, in order to prevent the head 16 from floating due to cutting resistance during burr F' (r cutting), the free rotation of the head is always prevented with a predetermined force and the angle of the blade 21 with respect to the wall surface of the pallet Pg4U is maintained at a predetermined value. There is.

In this way, the pallet multiplier 10 moves completely straight on the rail 12 and the pallet multiplier 10 moves in a straight line on the rail 12 to
As you cut out J, Fk, the head 16 will gradually open up) It will take 30K of the fork insertion port of P. and,
When the blade 21 of the head 16 reaches the curving starting point a of the girder 31 that defines the fork insertion port 30, if the direction in which the pressing force of the air cylinder device 23 is applied remains as it is, the cutting surface (curved surface of the girder 31) and Since the corner of the blade 21 is not sharp, the blade 21 does not follow the curve of the girder, and the blade 21 comes off the cutting surface of the burr F. To prevent this, the piston rod 23a of the air cylinder device 23 is contracted in the opposite direction to the head 16'T-link 13 so that the rotary blade 21 is actively raised against the entire cutting surface. All you have to do is make it possible. At that time, if the link 13' tries to move downward in parallel, the distance between the pivot joint 18 and the cutting surface becomes longer, so even if the link 13 is moved by the movement of the frame 11, the air cylinder device 15
The acting force causes the link] 3 to rotate counterclockwise, and the head 16 is pressed against the wall surface of the girder 31 while changing its inclination angle. Then, the pivot portion 1 of the link 13
When the imaginary line 28 connecting the pivot joint 18 of the head 16 and the pivot joint 18 is located in a straight line with the perpendicular line drawn to the tangent to the curved surface of the pivot joint 18, the rotation of the link 13 will no longer cause the head to move. 16 no longer follows the girder wall surface. Therefore, at that point, the movement of the pedestal 11 is stopped and returned in the opposite direction, and the link 13 is accordingly further rotated counterclockwise by the extension of the piston rod 15b by the air cylinder device 15. As a result, the head 16 enters inside the pallet P along the curvature 'rkJ of the girder 31 9
It's crowded. As a result, the fork insertion port 30 of the pallet P
The burr F formed on the curved wall of the girder 3I that partitions the entire section is removed to a certain extent inside the fork insertion port 30.

Thereafter, the pedestal 11 moves again in the predetermined movement direction. At this time, since the head 16 has completely passed through the opening of the fork insertion port 30, the burr F has not been cut or removed by the blade 21. The device is set to the state shown by the solid line in FIG. Then, when the head 16 passes through the fork insertion port 30, it comes into contact with the inner wall surface of another girder 31 (Fig. 4) that partitions the entire 1□ insertion port 30, and from that position, it is moved in the same manner as described above. The head 16 moves along the curved surface of the girder 31 to the outer side wall and performs cutting.The subsequent movement of the head 16 on the curved surface and flat surface of each girder is the same as in the case described above. .

As described above, the operation of one burr removing device 10 is as described above, but since it is desirable to also remove the burr F on the wall surface of each girder that forms the entire inner surface of the fork insertion port on the pallet P, As shown in FIG. 4, two deburring devices 10 with heads 16 facing opposite sides are installed as a pair at the tip of an elongated pedestal 32 at each fork insertion port. A rack 33 for driving the gantry is provided along the longitudinal direction on the rear upper surface of the gantry 32, and is driven by a pinion 34 disposed above and engaged with the rack 33. This pedestal 32 is slidably disposed on rails 35 to adjust its lateral position. The operation of each pair of deburring devices 10 is as follows.
It is exactly the same as 0.

That is, when the two deburring devices IO disposed on both sides of the pallet P first move to the entire front end 12a on the rail 12, the pedestal 32 is simultaneously driven and the pair of deburring devices IO disposed at the tips thereof move. A device 10 is inserted into each of the seven oak spigots and protrudes from the opposite spigot, where it is fitted into each air cylinder device 15.
is positioned on the front side wall as described above, and the deburring process can be started from there.

As shown in Fig. 4, the side walls of pallet P are arranged in the X direction and in the Y direction perpendicular to this. This means that the burr F on the wall of the curved surface has been removed. Therefore, the next step is to cut out the side wall of the pants l-P along the Y direction, but in that case, pallet p6
The supporting rotary table 36 is raised by a piston-cylinder device (not shown) arranged below it and lifts the pallet PTh. Then, when the pants (pants) P rise above L/-#i2 on both sides, the rotary table 36 rotates 90 degrees so that the Y-direction side wall follows the rail 12, and is stopped there and returned to its original position. It will be rained down. At that time, the pallet P is placed on the rotary table 3 while the paris is being removed.
6 to prevent the piston rod of the cylinder device 38 installed at the tip of the arm 37 that extends above the center of the pallet P from shrinking and obstructing the rise of the panties P. has been done. As a result, after setting the pallet P' on the rotary table 36, the pallet P' can be moved by simply changing the position of one counterfeit (by rotating the plane by 90 degrees and operating each deburring device 10 twice in total, one turn each time).
The above-mentioned paris existing in K can be completely removed.

In addition, in the example shown in FIG.
The pivot point 14 for the piston rod 15b of the air cylinder device 15 and the pivot point 18 for the head 16
An air cylinder device 23 was placed between the link 13 and attached to the link 13 to apply rotational force to the head 16, but as shown in FIG. The head 16 may be pivotally mounted, the other end may be pivotally mounted to the frame 1, and the piston rod 15b of the air cylinder device 15 may be pivotally mounted in the middle thereof. In addition, the air cylinder device 23 that rotates the head 16 with respect to all the links 13 is installed on the pedestal 11 as shown in FIG. One end of this L-shaped link member 39 is connected to the piston rod 23a, and the other end is connected to the head 16 via a connecting rod 40.
It may be pivoted to the connecting piece 22 of.

In addition, in the above embodiment, a so-called fixed blade was attached to the head 16, but instead of this, a flat milling cutter 41 equipped with a twisted blade is rotated by a shaft supporting the roller between the guide rollers 20a and 2Ob. A gear 4 coaxially provided on one end side of the entire flat milling cutter 41.
2, a gear train 43 that meshes with this, and this gear train 4
A similar effect can be obtained by rotating the motor 44, which is fully driven.

〔Effect of the invention〕

As explained above, according to the automatic deburring device for synthetic resin molded products of the present invention, it is possible to remove the burr lJ' generated on the outer wall surface of the molded product during welding very easily and in a short time. Furthermore, even if the surface on which the paris exists is curved, the head can accurately follow the curved surface, so that it can be completely removed without leaving any residue. In addition, synthetic resin molded products to which the apparatus of the present invention can be applied include: 1. - pallets, etc., but of course the present invention is not limited to these.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a plan view showing an automatic deburring device fml'fc for a synthetic resin molded product according to an embodiment of the present invention, and also shows the movements of various parts during deburring. The figure is a perspective view showing the structure of the head of the deburring device shown in Fig. 1, Fig. 3 is a partial plan view of the head shown in Fig. 2, and Fig. 4 shows A'Red as a synthetic resin molded product. FIG. 5 is a plan view showing a state in which a number of deburring devices according to the present invention are arranged in order to effectively cut out the paris in the fork insertion opening according to another embodiment of the present invention. FIG. 6 is a plan view showing the apparatus, and FIG. 6 is a perspective view showing another embodiment of the head in the automatic pick-off apparatus for synthetic resin molded products of the present invention. 10...Automatic scraping device for synthetic resin molded products, 11
... Frame, 12... Rail, 13... Link, 1
4.18...Central Nf#] 5.23...Air cylinder"-device, 16...Head, 2], 41...
・Blade, 30...7. T-1 insertion port, 3]...digit, P...tsukret, F...ノζ1ノ. Figure 1 16a Figure 4 Figure 5 Figure 6

Claims (1)

[Scope of Claims] (1) An automatic deburring device for removing deburrs existing on a surface including a curved surface formed on a synthetic resin molded product, comprising: a pedestal that is movable while being substantially fixed to the synthetic resin molded product; a link rotatably connected to the pedestal, and a first member configured to rotate the link relative to the pedestal around the entire center of the pivot point with the pedestal, or to apply an acting force to counter the reaction force received by the link; a rotational force imparting device; a head pivotally attached to the rotational end of the link; A second rotational force applying device applies an opposing force, and the rotation of the link by the first rotational force applying device and the acting force of the second rotational force applying device cause the synthetic resin molded product to be rotated. An automatic deburring device for synthetic resin molded products, including a blade attached to the side surface of the head that is pressed against the surface where the deformation exists, and a guide roller that guides the blade. (2) The automatic deburring device for a synthetic resin molded product according to claim 1, wherein the first and second rotational force applying devices are air cylinder devices. (3) Claims 1 or 2 are characterized in that the synthetic resin molded product is a plastic pallet formed by butt welding two upper and lower skits using a heat welding machine.
An automatic deburring device for synthetic resin molded products as described in 2.