JPS61284375A - Shot plast device - Google Patents

Abstract

PURPOSE:To have shotblasting with good performance even in corners of a work having much enevenness by installing a rotary shaft in the upper part of a moving frame capable of sliding to the right and left and by fixing work retaining members at the tip of this rotary shaft in such a way as facing each other. CONSTITUTION:A rotary shaft 17, a cylinder block W and a rotary shaft 17' are rotated by a motor 22 with reduction gear through a shaft coupling 23. At the same time, piston rods 10a, 10a' of cylinders 10, 10' are expanded and shrunk to swing tilting frames 7, 7' and moving frames 15, 15' etc. fore and aft, whereby the cylinder block W held by retaining members 19, 19'at the tip of said rotary shafts 17, 17' is rotated vertically as well as swung fore and aft with the top of props 6, 6' as fulcrum. In this condition a shotblasting device 2 is put in operation to blast the shot toward the cylinder block W, whereby the whole surface of cylinder block W is shotblasted uniformly in the same degree as with a shotblasting device of hanger type.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an apparatus suitable for shot blasting medium products such as cylinder blocks, which are automobile parts.

(Prior Art) Conventionally, shot blasting equipment for medium products such as cylinder blocks has a structure in which a trolley conveyor is provided with a large number of hangers for hanging the products, and a trolley conveyor is installed through a cleaning chamber. A so-called one-hanger shot blasting device is common, but this one-hanger shot blasting device has the disadvantage of being large-scale and expensive. For this reason, there is also a shot blasting device that performs shot blasting by projecting shots while holding and rotating the product one by one in a cabinet. If the polishing is severe, the shot does not hit the uneven parts evenly, causing problems such as uneven polishing.

(Purpose of the Invention) The present invention has been made in view of the above circumstances, and it is possible to intermittently shot-blast medium products one by one to the same condition as when using a shot-blasting device with a set of hangers. The purpose of the present invention is to provide a device that is small-scale and inexpensive.

(Configuration of the Invention) Hereinafter, the configuration of the present invention will be described in detail based on drawings of embodiments. (1) is a cabinet that is equipped with two shot projection devices (2) (2) on the ceiling and constitutes a cleaning room, and in the center of the cabinet (1) is a middle product (W). A walking conveyor (3) for conveyance extends in the front-rear direction and is installed through the cabinet (1), and furthermore, a screw conveyor (4) for transporting the projected shots is provided at the bottom of the cabinet (1). It is installed. In addition, rectangular board-shaped bases (5) (5') that are movable in the left and right directions are installed on both the left and right outer sides of the cabinet (1), and the left and right sides of the bases (5) (5') are On both sides, there are inverted V-shaped pillars (6) (6), (6
') (6') is erected (see Figure 2). And, at the upper end of the pillars (6) (6), (6') (6'), there are tilting frames (7) (7) oriented in the front and rear direction.
, (7') (ji) are pivoted, and the tilting frame (7) is connected between both ends of the tilting frame (7) and the tilting frame (7').
A pair of guide bars (8) (
8), (8') (8') are installed respectively (see Figure 3), and the inner tilting frame (7) (7') has a bracket (9) on the base (5) (5'). ) (9') upward hydraulic cylinder (10) (10')
) of the piston rods (10a) (10a') are connected with pins via brackets (11) (11'), respectively (see Figure 2), and the tilting frame (7)
(7), (7') (7') is a hydraulic cylinder (10)
(10') Piston rod (10a) (10a')
It is constructed so that it can swing back and forth as it expands and contracts. Furthermore, a circular plate (
13) (13') is fixed at its center, and the circular plates (13) (13') are vertically rotatably engaged with the left and right side plates of the cabinet (1), respectively. In addition,
The engagement portion between the circular plate (13) (13') and the cabinet (1) is formed by inserting the circular plate (13) (13') into the annular groove (14) (14) formed in the cabinet (1) using the annular member (31) (31'). 13) The peripheral edge of (13') is located, and the annular groove (14) (14') is filled with stainless steel sponge to prevent the shot from flying out from there. Further, between the guide bars (8) (8) and between the guide bars (8') (8'), there is a groove #=;
±#=; A movable frame (15) (15') is constructed so as to be slidable left and right, respectively, and the movable frame (15)
(15') has a tilting frame (7) (7), (7'
) (7') with a bracket (32) c32)
16) Piston rod (16a) of (16') (1
The moving frame (15) (15') and the piston rod (16') of the hydraulic cylinder (16) (16') are connected to each other (see Fig. 3).
a') (16a') moves left and right by expanding and contracting. Then, the moving frame (15) (15'
) is equipped with a rotating shaft (17) (17
') are arranged at appropriate intervals.
8) Rotatably mounted on the north via (18), (18') (18'). And the rotating shaft (17) (
17') slidably pass through the circular plates (13) and (13'), and their tips face above the walking conveyor (3). In addition, the rotation axis (1
7) At the tip of (17') is a horizontally U-shaped holding member (19) that holds the cylinder block (W), which is an intermediate product, from both left and right sides. (19) (19 is a rod-shaped auxiliary member (
20) (20 pieces are attached to each. Also, a support stand (21) is attached to the base end of the left rotation shaft (17).
) is connected to the drive shaft of a motor with a reducer (22) mounted on the moving frame (15) via a shaft joint (23). Furthermore, the rotating shaft (17) (17 bearing units (18) (18), (18') (1-
8') The center portions of the disks (24) (24') are fitted in the open position, and the 7-shaped grooves (25) (25') are formed on the periphery of the disks (24) (24'). One piece is engraved on each (see Figure 2). You can also use the moving frame (
15) Said disk (24) in (15') (24
As shown in Fig. 2, the bent part of the L-shaped link (26) (26') is vertically rotatable via the bearing unit h (27) (27'). The link (26) (26') is provided with a disk (
24) Rollers (28) (28') are pivotally attached to the 7-shaped grooves (25) (25') so as to be able to engage and disengage. Further, the other end of the link (26) (26') is attached to the support member (29) (
Upward cylinders (30) (30) pivoted through two (3)
The pin is connected to the tip of the piston (30a) (30a') of the roller (28) (28').
) is the piston rod (3) of the cylinder (30) (30').
0a') (30a') causes the disk (24) (2
4') is designed to engage and disengage from the 7-shaped groove (25) (25').

(Operation of the invention) Next, the operation of the device configured as described above will be explained. A cylinder block (W), which is an intermediate product, is placed in a predetermined position of the descending walking conveyor (3) by an appropriate means.
After placing the cylinder block (W) horizontally, the walking conveyor (3) is raised and moved forward a predetermined distance.
is carried between the holding members (20) (20). Next, the piston rod (16a) of the cylinder (16) (16')
) (16a) and move frame (15) (
15'), rotating shaft (17) (17 pieces, holding member (19
) (19'), etc., close to each other, and press the cylinder block (
5) is held with some play by the holding members (19) (19'). In this case, the auxiliary member (20) (2
0') is inserted into a hole (not shown) provided in the cylinder block (W), and the holding member (19) (19) holds the cylinder block (W) when the cylinder block (W) rotates.
') and become supported.

Next, the walking conveyor (3) is lowered to a required distance from the cylinder block (W), and then the piston rod (30a) (3
0a') is contracted to remove the rollers (28) (28') from the 7-shaped grooves (25) (25') of the disks (24) (24'). Next, the motor with reducer (22) is driven to rotate the rotating shaft (17), cylinder block (W), rotating shaft (1τ), etc. via the shaft coupling (23), and at the same time, the cylinder (10) ( 10') piston rod (
10a) (10a') to expand and contract the tilting frame (7
) (7), (7') (7'), moving frame (1
5') (15'), etc., back and forth, thereby vertically rotating the cylinder block (W) and at the same time rotating the column (
6) Swing back and forth using the upper end of (6') as a fulcrum.

Under this condition, when the shot projection device (2) (2) is driven to project a shot onto the cylinder block (W), the cylinder block (W') is rotated and oscillated at the same time. Therefore, the shot hits the entire surface. After projecting this shot for the required time, the drive of the shot projection device (2) (2) is stopped to stop projecting the shot, and a sensor (not shown) detects this and the rotation shaft (17) (17'), disk (24) (24'
), etc., at a predetermined position, as well as tilting frames (7) (7) (7 (7'), moving frames (1
5) (15'), etc. are also stopped at a predetermined position, and then the piston rod (30) (30') of the cylinder (30) (30') is stopped.
30a) (30a') and roller (28) (
28') again into the figure 7 groove (24) of the disk (24) (24').
5) (25'), thereby causing the holding member (25') to engage.
19) (19') and auxiliary member (20) (20'
) will be corrected. Next, the walking conveyor (3) is raised to place the cylinder block (W) on the walking conveyor (3) again, and then the cylinder block (1) is placed on the walking conveyor (3) again.
6) (16) Piston rod (16a) (16a
') is contracted to separate the holding members (19) (19, auxiliary members (20) (20'), etc. from the cylinder block (W). Then, the walking conveyor (3) is advanced to remove the shot blasted parts. Cylinder block(
W) is carried out of the cabinet (1) to complete one cycle.

In addition, in the above embodiment, the holding members (19) (19')
The cylinder block (W) is held by the and auxiliary members (20) (20'), but depending on the shape, it may be held only by the holding members (19) (19').
The auxiliary members (20) (20) may be removed.

(Effects of the Invention) As is clear from the above explanation, according to the present invention, since the shot is projected while rotating and simultaneously swinging the medium product in the grinding chamber, the surface of the product is extremely uneven. In addition, it is possible to shot-blast the product to the same extent as a hanger-set shot-blasting device by applying shots to all areas, and the device has excellent effects such as being small-scale and inexpensive.

[Brief explanation of drawings]

FIG. 1 is a partially sectional front view showing one embodiment of the present invention, and FIG.
The figure is a left side view of the main part of FIG. 1, FIG. 3 is a view taken along arrows A to A in FIG. 1, and FIG. 4 is a view taken along arrows B to B in FIG. (1): Cabinet (3): Walking conveyor (7), (7): Tilting frame (8), (8) Guide bar (15), (15'): Moving frame (17)
, (17'): Rotating shaft (19), (19'): Holding member (22): Motor with reducer (Fig. 2)

Claims (1)

[Claims] A conveyor (3) oriented in the front-rear direction is installed in the cabinet (1) constituting the cleaning room, and a conveyor (3) oriented in the front-rear direction is installed on both the left and right outer sides of the cabinet (1), and a conveyor (3) is installed in the cabinet (1) and oriented in the front-rear direction. Tilting frames (7) lined up with
7), (7') and (7') are pivotally supported at the center, and a guide bar (8) is provided between both ends of the tilting frames (7), (7), (7') and (7'). ) (8), (8') (8') and the guide bar (8) (8), (8') (8')
can swing back and forth, and a movable frame (
15) (15') are constructed so as to be slidable in the left and right directions, and on the upper part of the movable frames (15) (15'), extending in the left and right direction, the tip faces a position above the conveyor (3). The rotating shafts (17) (17') are rotatably mounted,
A product holding member (
19) (19') are fixed to face each other, and the base end of one rotating shaft (17) is connected to the drive shaft of a motor with a reducer (22) fixed to the moving frame (15). A shot blasting device characterized by: