JPH0424192B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hanger-type shot blasting machine that performs blasting on a work suspended on a hanger, and in particular, a system that mechanically attaches and detaches the work to and from the hanger. It is related to the Yotsuto Blast Machine.

By hanging the workpiece transported by a workpiece transporting device such as a roller conveyor on a hanger installed in the blast cabinet, and projecting a predetermined abrasive material while rotating the hanger,
Hanger-type shot blasting machines that perform blasting on such workpieces have been conventionally provided.

By the way, in such shot blasting machines, the transport of the workpiece, the rotation of the workpiece in the blast cabinet, the projection of the abrasive material, etc. have already been automated, and the workability of the blasting process has been improved. Generally, workers still use a balancer or the like to manually hang transported workpieces on hangers or remove blasted workpieces from hangers. . For this reason, the improvement in work efficiency of blasting was limited, and the labor burden on workers was also increased, especially in the case of mass production.

The present invention was made against the background of the above-mentioned circumstances, and its purpose is to provide a hanger-type shot that mechanically attaches and detaches a workpiece to a hanger and improves the workability of blasting. Our goal is to provide blasting machines.

In order to achieve such an object, the present invention provides (a) a workpiece conveyance device for conveying a predetermined workpiece to be blasted, and (b) a blast cabinet having an opening on the side of the workpiece conveyance device. (c) a sub-hanger that suspends the workpiece on the workpiece conveyance device and is suspended from the hanger in the blast cabinet; (d) an elevating mechanism that is movable up and down, which is attached to a traveling platform that is movable back and forth from the workpiece transport device to the opening side of the blast cabinet; and (e) an elevating mechanism provided on the elevating mechanism. was given,
The hanger-type shot blasting machine is configured to include a sub-hanger mounting means for removably mounting the sub-hanger.

In this way, the workpiece conveyed by the workpiece conveyance device is suspended from the subhanger that is stopped by the subhanger mounting means of the lifting mechanism, and in this state, the traveling platform is moved to the blast carrier. By being moved toward the opening of the vignette, the work is transferred into the blast cabinet, where the sub-hanger suspending the work is detached from the sub-hanger mounting means of the lifting mechanism and transferred to the blast cabinet. It is suspended from a hanger inside. After the work is blasted in the blast cabinet, the sub-hanger that suspends the work is once again locked to the sub-hanger loading means of the elevating mechanism and detached from the hanger in the blast cabinet. The workpiece is then transferred onto the workpiece transfer device, where the workpiece suspended from the sub-hanger is released.

Therefore, all of the workpieces are attached to and detached from the hangers in the blast cabinet mechanically, which greatly reduces the labor burden on the operator. Furthermore, by mechanizing the process in this way, it becomes possible to automate the process, further improving the processing efficiency of shot blasting. Therefore, such a shot blasting machine according to the present invention,
When applied to production lines aimed at mass production of automobile parts, etc., particularly excellent effects can be achieved.

Next, in order to clarify the present invention more specifically, one embodiment of the present invention will be described in detail based on the drawings.

First, FIGS. 1 and 2 are a front view and a plan view of a hanger type shot blasting machine according to the present invention. In these figures, 10 is a shot blasting device, and a workpiece 14 transported by a workpiece transportation device 12 is suspended from a hanger 18 of the shotblasting device 10 by a workpiece suspension device 16. It's becoming like that.

The shot blasting device 10 is
A blast cabinet 22 having an opening 20 is provided on the side of the workpiece transfer device 12, and a rotary plate 24 is rotatably provided on the top of the blast cabinet 22. Further, a rotating shaft 26 is erected downward at the center of the rotating plate 24, and four partition plates 28 protruding radially at equal angular intervals in the circumferential direction are fixed to the rotating shaft 26. has been done. The interior of the blast cabinet 22 is divided into four spaces by these four partition plates 28, and the hanger 18 is disposed in each space.

Further, the hanger 18 is rotatably attached to the outer circumference of the rotary plate 24 and is rotated around the rotation axis 26 as the rotary plate 24 rotates.
Here, the rotary plate 24 is intermittently rotated by 1/4 rotation (90 degrees), and each hanger 18 is stopped at each station position A, B, C, and D. Predetermined tasks are automatically performed.

That is, at the station position A, the workpiece 14 is transferred between the workpiece hanging device 16 and the hanger 18, and at the station position C, the workpiece 14 is transferred by the abrasive material projected from the abrasive material projection device 30. The workpiece 14 is subjected to a blasting process, and at the station position D, an air blow is applied to the blasted workpiece 14, so that abrasive materials and foreign matter adhering to the workpiece 14 are blown off. At station positions C and D, a sprocket 32 fixed to the upper end of the hanger 18 is engaged with a chain 34, and the workpiece 14 is rotated together with the hanger 18. Also, at the station position A, the sprocket 32 is engaged with the chain 36, but this is for positioning the hanger 18 at a constant rotational position for transferring the workpiece 14.

A screw conveyor 38 is disposed below the blast cabinet 22.
Foreign matter and abrasive materials generated during blasting are collected. The collected abrasive material and foreign matter are supplied to a shot separator 42 by a bucket elevator 40, where the abrasive material and foreign matter are separated, and the abrasive material is returned to the abrasive material projection device 30. On the other hand, the foreign matter is sent to a dust collector (not shown) via piping 44.

On the other hand, as shown in the enlarged front view of FIG. 3, the workpiece conveyance device 12 includes a carry-in roller conveyor 46 that carries in the workpieces 14 from the previous step;
Located between the carry-out roller conveyor 48 that carries out the work 14 to the subsequent process and the roller conveyors 46 and 48 on the carry-in and carry-out sides, and at a position corresponding to the opening 20 of the blast cabinet 22. A central roller conveyor 50 provided
It consists of three roller conveyors.
Those roller conveyors 46, 48, and 50
is equipped with a large number of rollers 52 each connected by a chain (not shown), and the rollers 52 are rotationally driven by a motor 54 (the roller conveyors 46 and 48 on the loading and unloading sides are not shown). As a result, the work 14 placed on the rollers 52 is conveyed while being guided by the guide plate 56.

Further, a rotating shaft 60 is fixed to a central portion of a table 58 to which the rollers 52 and motor 54 of the central roller conveyor 50 are attached. This rotating shaft 60 is rotatably supported by a bracket 62 and has an arm 6 whose one end is pivoted to a rod 66 of a cylinder 64.
8 is fixed to the other end. As a result, the table 58 is reversely rotated in accordance with the operation of the cylinder 64 between the horizontal position shown by the solid line in FIG. The posture of No. 14 can be changed approximately 90 degrees. In addition, in this example,
An automobile transmission is used as the workpiece 14, and in order to prevent the workpiece 14 from changing its posture (swinging) when it is hung on the hanger 18, the table 58 is reversely rotated. The posture is changed to a stable state in advance.

Further, the table 58 is provided with a stopper 70 for positioning the work 14 and a pair of clampers 72 for fixing the work 14 on the table 58.

The stopper 70 determines the stopping position of the workpiece 14 sent from the carry-in roller conveyor 46,
This is for positioning the workpiece 14 with respect to the workpiece suspension device 16, and as shown in detail in FIG. 4, it is rotatably supported by a pin 74 provided on the table 58. A rod 78 of a cylinder 76 is pivotally attached to one end of the stopper 70. As a result, as the cylinder 76 operates, the stopper 70 is positioned at two positions: a locking position shown by a solid line in FIG. 4 and a non-locking position shown by a two-dot chain line. The workpiece 14 is positioned by being positioned at. In addition, table 58
is provided with a sensor such as a phototube (not shown) for detecting that the workpiece 14 is positioned by the stopper 70.
The operation of the motor 54 that rotates the motor 54 is stopped.

On the other hand, the pair of clampers 72 are used to hold the workpiece 14 in a fixed position when the table 58 is reversely rotated, and as shown in FIGS. 5 and 6, the width of the table 58 is In other words, the rollers 52 are provided opposite to each other at both ends in the axial direction. The pair of clampers 72 are each rotatably supported by a pin 80 provided on the table 58, and one end of both clampers 72 is each pivoted to a cylinder 82 and a rod 84 of the cylinder 82. .
As a result, both clampers 72 are positioned in two positions, a non-clamper position shown by a solid line in FIG. Pressure is applied by the operating force of. That is, these pairs of clampers 72 and cylinders 8
2 and the like constitute a clamp mechanism that clamps the workpiece 14.

The work 14 transported by such a work transport device 12 is transferred to the shot blasting device 10 by a predetermined work suspension device 16.
It is adapted to be suspended from a hanger 18. As shown enlarged in FIGS. 7 and 8, the workpiece suspension device 16 includes a traveling platform 86 that is moved horizontally across the workpiece conveying device 12, and the traveling platform 86. an elevating member 88 that is movable in the vertical direction; and a sub-hanger 9 that is detachably mounted on the elevating member 88.
0.

The traveling table 86 of the workpiece suspension device 16 includes a rectangular traveling table main body 92 and a pair of guide members 9 erected vertically downward on the traveling table main body 92.
4, and the traveling platform main body 92
Four wheels 96 are rotatably attached to the upper part of. Further, the blast cabinet 2
A pair of horizontal members 1 whose distal end sides are supported by support posts 98 are disposed at the upper part of the opening 20 side of 2.
00 extends horizontally across the workpiece transport device 12, and rails 102 and 104 are provided at the upper part of the horizontal member 100, respectively, to face each other in the vertical direction. By fitting the wheels 96 between the rails 102 and 104, the carriage 86 can reciprocate horizontally along the rails 102 and 104.

A bracket 106 is fixed to the main body 92 of the carriage, and a rod 110 of a cylinder 108 disposed above the blast cabinet 22 is attached to the bracket 106. As a result, the carriage main body 92, in other words, the workpiece suspension device 16, is reciprocated between the retreat position shown by the solid line in FIG. 6 and the approach position shown by the two-dot chain line in accordance with the operation of the cylinder 108. It will be done.

On the other hand, the pair of guide members 94 erected downward on the main body 92 of the traveling platform are respectively provided in a U-shaped cross section and are opposed to each other. It is movable in the vertical direction while being guided by a member 94. The elevating member 88 is a frame body 114 to which four wheels 112 fitted into the guide member 94 are attached.
and a pair of mounting members 116 projecting substantially horizontally toward the opening 20 of the blast cabinet 22 at the lower end of the frame 114. A bracket 118 is fixed to the frame 114, and a rod 122 of a cylinder 120 disposed on the traveling platform main body 92 is attached to the bracket 118, so that the frame 114, in other words, can be moved up and down. The member 88 is driven in the vertical direction between a raised and lowered position shown by a solid line in FIG. 7 and a lowered position shown by a two-dot chain line. That is, here, the elevating member 88
The cylinder 120 and the like constitute an elevating mechanism.

Further, support plates 124 are fixed to the upper surfaces of the distal ends of the pair of mounting members 116, respectively, and a gap L is formed between these support plates 124 as shown in FIG. . As shown in an enlarged view in FIG. 9, on the gap L side of the support plate 124, V-blocks 126 as sub-hanger mounting means are fixed, each having a V-groove that expands upward. The sub-hanger 90 is detachably mounted on this V-block 126.

Here, the sub-hanger 90 is attached to the upper frame portion 12.
8, an intermediate inclined portion 130, and a pair of lower L-shaped suspension portions 132, and the lower end of the frame portion 128 is mounted on the V-block 126. Further, on both sides of the frame portion 128, there are brackets 13 fixed to the support plate 124.
A contact plate 136 is attached to the inclined portion 130 so that the position thereof can be adjusted.
An abutment member 142 whose position is adjustable is abutted by a cylinder 140 attached below the attachment member 116 via a bracket 138. As a result, the sub-hanger 90 mounted on the V-block 126 is positioned in a predetermined position, and the sub-hanger 90 is prevented from swinging when the work 14 is suspended from the suspension section 132.

Then, the sub-hanger 90 positioned in this manner is locked in a fixed position by a locking means 144 provided on the elevating member 88. As is clear from FIG. 9, the locking means 144 includes a locking member 150 attached to a pair of pins 146 fixed to the mounting member 116 so as to be movable in parallel via a link 148, and the frame 114. A cylinder 154 is attached to the cylinder 154 via a bracket 152. The rod 156 of this cylinder 154 and one of the links 148 are connected by a lever 158, and as the cylinder 154 operates, the locking member 150 moves to the locking position shown by the solid line in FIG. It is designed so that it can be positioned in two positions: the retracted position shown by the chain line.

Next, the operation of the hanger type shot blasting machine constructed as above will be explained.

First, the workpiece suspension device 16 is placed in advance in a retracted position away from the blast cabinet 22, and its lifting member 88 is placed in a lowered position. In this state, when the workpiece 14 is transported by the workpiece transport device 12 and positioned in a predetermined state, that is, in a 90° inverted state, the workpiece suspension device 16 is directed toward the blast cabinet 22. The suspension portion 132 of the sub-hanger 90 is moved forward through the hole 160 formed in the workpiece 14.
(See Figure 3). The two-dot chain line shown at the lower center of FIG. 7 shows the state at this time.

Here, the sub-hanger 90 mounted on the V block 126 of the elevating member 88 is positioned and held in a predetermined position by the contact plate 136 and the contact member 142, and the fixing member of the locking means 144 150, the suspension portion 132 of the sub-hanger 90 is smoothly and reliably inserted into the hole 160 of the workpiece 14. Note that the lowering position of the elevating member 88 is such that the elevating member 88
Suspension section 132 of sub-hanger 90 mounted on
is set in advance at a position where it can be inserted into the hole 160 of the workpiece 14.

Subsequently, the elevating member 88 is slightly raised,
When the suspension portion 132 of the sub-hanger 90 comes into contact with the upper inner surface of the hole 160, the clamper 72 of the work transfer device 12 is positioned at the non-clamping position, and the clamped state of the work 14 is released. Then, when the sub-hanger 90 suspends the workpiece 14 and the elevating member 88 is raised again and positioned at the raised position, the workpiece suspension device 16
The whole is again advanced towards the blast cabinet 22 and placed in the approach position. At this time, the mounting member 116 of the elevating member 88 is inserted into the blast cabinet 22 through the opening 20 of the blast cabinet 22, and the end hook portion of the hanger 18 of the shot blasting device 10 is inserted into the sub-hanger 90. It enters into the frame portion 128. 9th
The hanger 18 shown by the two-dot chain line in the figure and the mounting member 116 shown by the two-dot chain line below the hanger 18 in FIG. 7 both show the state at this time.

The approach position of the workpiece suspension device 16 and the raised position of the elevating member 88 are set in advance so that the positional relationship of the sub-hanger 90 with respect to the hanger 18 is as described above. Further, the hanger 18 is adjusted by the chain 36 (see FIG. 2) so that its end hook portion faces the workpiece hanging device 16.

In this state, the elevating member 88 is slightly lowered, and the frame portion 128 of the sub-hanger 90
When the upper part of the sub-hanger 90 comes into contact with the tip hook portion of the hanger 18, the locking member 150 of the locking means 144 is positioned at the retracted position, and the locking state of the sub-hanger 90 is released. Subsequently, when the elevating member 88 is further lowered, the sub-hanger 90 moves to the hanger 18.
The frame 128 is suspended from the V block 1.
It separates upward from the V groove of 26. In FIG. 7, the mounting member 116 shown by a dashed line below the hanger type shot blasting machine 18 shows its state at this time.

Thereafter, when the entire workpiece suspension device 16 is driven in a direction away from the blast cabinet 22, the inclined portion 130 of the sub-hanger 90 passes through the gap L of the support plate 124 and is relatively moved away from the lifting member 88. break away.

In this state, the shot blasting device 10
is activated, and the work 14 suspended from the hanger 18 via the sub-hanger 90 is intermittently sent to station positions B, C, and D as the rotary plate 24 rotates, and as described above, the work 14 is intermittently sent to the station positions B, C, and D. A blasting process is applied.

Then, the workpiece 14 that has been subjected to the blasting process returns to the station position A again, and when the end hook portion of the hanger 18 is rotated by the chain 36 in a direction facing the workpiece suspension device 16, the workpiece suspension device 16 is placed in a close position.
At this time, the inclined portion 13 of the sub-hanger 90
0 is inserted into the gap L of the support plate 124, and by raising the elevating member 88 in this state, the frame portion 128 of the sub-hanger 90 is mounted on the V-block 126. Thereafter, the locking means 144
When activated, the locking member 150 locks the lower part of the frame portion 128, and the sub-hanger 90 is fixed in position with respect to the elevating member 88.

Subsequently, when the elevating member 88 is further raised, the upper portion of the frame portion 128 of the sub-hanger 90 separates from the tip hook portion of the hanger 18. Next, the entire workpiece suspension device 16 is attached to the blast cabinet 22.
The workpiece 14 suspended from the sub-hanger 90 is moved in the direction of retraction from the workpiece conveyance device 1.
2, the movement of the work suspension device 16 is stopped and the elevating member 88 is lowered.

Here, the table 58 of the workpiece conveyance device 12
The workpiece 14 is shot blasted by a shot blasting device 10.
placed in a vertical position during transfer to
The stopper 70 and clamper 72 remain in the locked and unclamped positions, respectively. Therefore, the elevating member 88
When the workpiece 1 is lowered, the workpiece 1 suspended from the elevating member 88 via the sub-hanger 90
4 is brought into contact with the stopper 70 at its lower end. In this state, the clamper 72 is operated to clamp the workpiece 14 in a fixed position, and then the elevating member 88 is further lowered slightly to engage the suspension part 132 of the sub-hanger 90 and the hole 160 of the workpiece 14. The combination is resolved. Subsequently, the entire workpiece suspension device 16 is retreated to the retracted position, and the suspension portion 132 of the sub-hanger 90 is pulled out from the hole 160 of the workpiece 14.

On the other hand, the workpiece 14 that has undergone the blasting process is
After the table 58 is reversely rotated to the horizontal position and the stopper 70 and clamper 72 are positioned at the non-locking position and the non-clamping position,
It is carried out from the central roller conveyor 50 to the next process via the carry-out roller conveyor 48.

In addition, in the above explanation, one workpiece 1
4 has been explained step by step, but the work of attaching and detaching the work 14 to and from the shot blasting device 10 is similar to the operation of blasting another work 14 in the shot blasting device 10. The workpiece 14 after blasting is removed and a new workpiece 14 is removed every 1/4 rotation of the rotary plate 24.
installation will be carried out. Further, the driving means of the workpiece suspension device 16, that is, the cylinder 10
8, 120, and 154 are controlled by a control device (not shown) that automatically controls the operations of the workpiece conveyance device 12 and the shot blasting device 10, and all of the operations described above are controlled by a control device (not shown). It's automated.

In this way, according to the hanger type shot blasting machine having the structure as described above, the workpiece 14 transported by the workpiece transport device 12 is mechanically attached to the hanger 18 by the workpiece suspension device 16. Since the suspended work 14 and the blasted work 14 are removed from the hanger 18, the labor burden on the worker is greatly reduced. Moreover, in this embodiment, since the operation of the workpiece suspension device 16 is completely automated, combined with the features of the workpiece transport device 12 and the shot blasting device 10, which are already automated, the shot blasting process can be easily performed. Machining efficiency can be further improved. For this reason, such a shot blasting machine exhibits particularly excellent effects on a production line intended for mass production such as automobile parts.

In addition, in this embodiment, the table 58 of the workpiece conveyance device 12 is configured to be reversely rotated, so that the conveyed workpiece 14 is changed in advance to a stable posture in its suspended state. Even for workpieces 14, such as transmissions, which generally have different postures during transportation and suspension, they can be safely and reliably attached to and detached from the hanger 18.

Although one embodiment of the present invention has been described above, the present invention can be implemented in other embodiments as well.

For example, the shot blasting device 10 in the above-described embodiment is configured to stop at station positions A, B, C, and D, and processes such as blasting and air blowing are performed at separate positions. It is also possible to employ other types of shot blasting equipment, such as a type of equipment that sequentially performs blasting, air blowing, etc. at the location.

Furthermore, in the above example, the workpiece 14 is attached and detached at the station position A, but if the workpiece 14 is to be blasted in a relatively short period of time, the workpiece 14 is attached and detached at the station position A and the station position B. In , the workpiece 14 after the blasting process is removed and a new workpiece 1 is installed.
It is also possible to configure the four attachments to be performed at the same time.

Furthermore, when using a workpiece 14 that has the same transport attitude and hanging attitude, the table 58
A cylinder 64 that rotates in reverse, a clamper 72,
The cylinder 76 and the like that drive the clamper 72 become unnecessary.

Also, the plate 1 for positioning the sub-hanger 90 is
36, abutting member 142, and sub-hanger 90
The locking means 144 that locks the sub-hanger 90 and the workpiece 14 in a fixed position also
4 is stable, or when the attitude of the sub-hanger 90 mounted on the elevating member 88 is relatively stable, there is no need to provide the sub-hanger 90.

Although no other examples are given, it goes without saying that the present invention can be implemented with various modifications and improvements based on the knowledge of those skilled in the art without departing from the spirit thereof.

[Brief explanation of drawings]

FIG. 1 is a front view of a hanger type shot blasting machine which is an embodiment of the present invention, and FIG. 2 is a plan view thereof. FIG. 3 is a front view showing the main parts of the workpiece conveying device constituting the above-mentioned hanger type shot blasting machine. FIG. 4 is a front view showing a state in which the stopper installed in the workpiece conveyance device shown in FIG. 3 is attached. 5 and 6 are a front view and a side view, respectively, showing how the clamper installed in the workpiece conveyance device shown in FIG. 3 is attached. FIG. 7 and FIG. 8 are a front view and a side view, respectively, with a portion cut away, showing a workpiece suspension device constituting the above-mentioned hanger type shot blasting machine. FIG. 9 is a partially enlarged view of the work suspension device shown in FIG. 7. 10: Shot blasting device, 12: Work conveying device, 14: Work, 16: Work hanging device,
18: hanger, 20: opening, 22: blast cabinet, {72: clamper, 76: cylinder} (clamp mechanism), 86: traveling platform, {[88: elevating member, 120: cylinder} (elevating mechanism) , 90:
Sub-hanger, 100: Horizontal member, 102, 10
4: Rail, 126: V block (sub hanger mounting means), 144: Locking means.

Claims (1)

[Claims] 1. A workpiece conveyance device for conveying a predetermined workpiece to be blasted; and a blasting cabinet for blasting a workpiece suspended from a hanger in a blast cabinet having an opening on the side of the workpiece conveyance device. a shot blasting device; a sub-hanger that suspends the workpiece on the workpiece transport device and is suspended from a hanger in the blast cabinet; an elevating mechanism that is movable up and down, which is attached to a traveling base that is capable of reciprocating; and a sub-hanger mounting means for removably mounting the sub-hanger, which is provided on the elevating mechanism. A hanger-type shot blasting machine comprising: 2. The hanger type shot blasting machine according to claim 1, wherein the sub-hanger mounting means includes a removable locking means for locking the loaded sub-hanger in a fixed position. 3. A reversing table equipped with a clamping mechanism capable of clamping the workpiece and capable of reversing rotation is provided on the conveyance path of the workpiece conveyance device, and the elevating mechanism 3. The hanger type shot blasting machine according to claim 1, wherein the sub-hanger mounted on the sub-hanger mounting means is operated as a suspension support.