JP2022064248A - Blast device - Google Patents

Abstract

To provide a blast device that can improve productivity by reducing time for blast processing and is downsized and simply configured.SOLUTION: A blast device 60 applies blast processing while spraying blast particles to a work-piece. The blast device 60 comprises a blast main body part 62, a drum chamber 65 in which an inner wall 64 smoothly connected to the inside of the blast main body part 62 including a curve is formed and into which the work-piece is introduced, and a blast air passage 67, connected to the drum chamber 65, through which air is injected along the inner wall 64 of the drum chamber 65.SELECTED DRAWING: Figure 10

Description

The present invention relates to a blasting device that blasts a work.

Generally, in order to commercialize a small metal work such as a shaft, a pin, a bolt, or a gear, there is a product that is commercialized by blasting the work. There are various shapes, sizes, materials, etc. of the work, and in order to support various works with one blasting device, it is necessary to spray blast particles (abrasive) from multiple directions for each work. As a blasting device for spraying such blasting particles, for example, the blasting device described in Patent Document 1 is known.

The blasting device of Patent Document 1 is provided with a blast gun that injects blast particles into a work box provided with a viewing window. The worker puts his arm through the two worker arm entrances formed in the work box, holds the work with one hand, holds the blast gun with the other hand, and uses this blast gun to turn the blast grains into work from multiple directions. Spray.

In the blasting device of Patent Document 1, blast particles can be sprayed on the work from multiple directions, but the work is performed on each work, and the operator manually adjusts the angle of the work and the angle of the blast gun. Since it is necessary to move with, it takes time and effort and the work time becomes long. As a countermeasure, the blasting device of Patent Document 2 is known.

The blasting device of Patent Document 2 rotationally drives an octagonal can body rotatably provided on the base frame, a blast injection nozzle provided inside the octagonal can body to inject blast particles, and an octagonal can body. It is equipped with a geared motor. The worker throws the work into the octagonal can body, injects the blast particles from the blast injection nozzle, and rotates the octagonal can body, so that the work and the blast particles move while being mixed and blasting is performed. To.

Utility Model Registration No. 3190961 Gazette Utility Model Registration No. 3208678 Gazette

In the blasting apparatus of Patent Document 2, a plurality of workpieces of different types are blasted at once by so-called batch processing. However, after the blasting process is completed, it takes time because it is necessary to discharge the blast particles together with the work from the octagonal can body, shake off the blast particles with a sieve net, and then take out the work and sort it. Therefore, the work becomes complicated and time-consuming. Further, the blasting device requires a rotating mechanism such as a geared motor for rotating drive and a bearing, which makes the device large and complicated.

In view of the above points, it is an object of the present invention to provide a blasting device having a small and simple mechanism, which can shorten the blasting time and improve the productivity.

In order to achieve the above object, the blasting device of the present invention is used.
A blasting device that blasts the work.
A drum chamber formed by a blast main body and an inner wall smoothly connected to the inside of the blast main body including a curved surface and into which the work is loaded, and air connected to the drum chamber and along the inner wall of the drum chamber. It is characterized by having a blast air passage for blowing in.

Preferably, the drum chamber is formed in a horizontally long oval or perfect circle shape when viewed from the front.
It is provided with an upper loading port formed in the upper part of the drum chamber and into which the work is loaded, and a lower ejection port formed in the lower part of the drum chamber and from which the work is taken out.

Preferably, the blast main body portion is formed with an take-out palate that opens and closes the lower take-out port, and is formed by opening downward from the left and right side portions of the drum chamber along the inner wall, and is formed on the take-out palate. It is equipped with a gathering air passage that blows air to gather the workpieces.

Preferably, the blast tank for storing the blast grains for blasting the work, the blast grain recovery path formed in the blast main body portion, communicating the drum chamber with the outside, and connecting to the blast tank, and the above. It is provided with a discharge air passage that is connected to the drum chamber and blows air for discharging the blast particles.

Preferably, the blasting device is connected to the drum chamber, which is formed of a blast main body portion, an inner wall smoothly connected to the inside of the blast main body portion including a curved surface, and into which the work is loaded, and the drum chamber. It is equipped with a blast air passage that blows air along the inner wall of the drum chamber.

Preferably, the blast grain recovery path is formed in a diameter smaller than the outer diameter of the work, and a plurality of the blast grain recovery paths are formed in the blast main body portion.

According to this configuration, by throwing the work into the drum chamber and blowing air along the inner wall, the work moves along the smoothly connected inner wall including the curved surface, and the blast grains and the drum chamber are confused. Since it rotates, blasting can be performed in a short time. In the general conventional technique, sorting is required for batch processing of a plurality of workpieces, which takes, for example, 15 minutes. However, in the embodiment of the present invention, sorting work is unnecessary and blasting can be performed in a short time of about 1 minute and 30 seconds. Since it is completed, the blasting time can be shortened and the productivity can be improved. Further, since a rotation mechanism such as a geared motor for rotational drive or a bearing as in the prior art is not required, a blast device having a small and simple mechanism can be obtained.

It is a perspective view of the production system which concerns on embodiment of this invention. It is a top view of a production system. It is explanatory drawing which shows the basic principle of high frequency induction heating. It is a figure which shows the relationship between the quenching and tempering time and temperature which concerns on a comparative example, and is a figure which shows the relationship between the quenching and tempering time and temperature which concerns on Example. It is a perspective view of a heat treatment apparatus. It is sectional drawing of the heat treatment apparatus. It is an operation diagram of a heat treatment apparatus. It is an operation diagram which shows the switching of the tempering furnace of a heat treatment apparatus. It is a front view of the blasting apparatus. It is sectional drawing of the main part of a blasting apparatus. It is an operation diagram up to the blast grain discharge process of a blasting apparatus. It is an operation diagram up to the origin return process of a blasting apparatus. It is a perspective view of a packing device. It is a top view of the main part of a packing device. It is sectional drawing of the main part of a packing device. It is an operation diagram up to the tube retreat process of a packing device. It is an operation diagram up to the origin return process of a packing device. It is a work time accumulation graph which concerns on a comparative example, and a work time accumulation graph which concerns on an Example.

The embodiment for carrying out the present invention will be described below with reference to the accompanying drawings. The drawings are conceptually (schematically) shown. Further, an example of a production system (production line) in which the blasting device 60 of the present invention is arranged will be shown, and the blasting device 60 will be described in detail in the production system (production line).

The entire production system 10 according to the embodiment of the present invention will be described.
As shown in FIGS. 1 and 2, the production system 10 includes a processing device 20 for cutting a metal work W (see FIG. 3), a heat treatment device 30 for quenching and tempering the work W, and a work W. It includes a blasting device 60 for blasting, a grinding machine 80 for grinding the work W, and a packing device 90 for packing the work W.

In the production system 10, the processing device 20, the heat treatment device 30, the blasting device 60, the grinding machine 80, and the packing device 90 are arranged in this order in a U-shape in a plan view. Further, the blasting device 60 is arranged adjacent to the heat treatment device 30. The worker P enters the U-shape arranged in this way, operates each device, and sets the work W. In addition, the operation of each device is controlled by the control unit.

Next, the operation of the entire production system 10 will be described.
In the flow of the processing process of the production system 10, the work W is machined by the processing device 20 (processing process), the work W processed by the processing device 20 is heat-treated by the heat treatment device 30 (heat treatment process), and the heat treatment device 30 is used. The heat-treated work W is blasted by the blasting device 60 (blasting process), the work W blasted by the blasting device 60 is ground by the grinding machine 80 (grinding process), and the work W polished by the grinding machine 80 is obtained. It is packed by the packing device 90 (packing process).

Next, the effect of the present invention will be described.
According to this configuration, in the production system 10, each device is arranged in a U-shape in a plan view in the order of processes, so that the space of the entire production system 10 is saved and the worker P enters the U-shape. As a result, all the devices can be operated by simply changing the direction without moving, and the workability is good and the productivity can be improved. Further, by arranging the blasting device 60 adjacent to the heat treatment device 30, the man-hours for transporting the work by the operator can be reduced.

Next, the basic principle of high-frequency induction heating adopted in the heat treatment apparatus 30 will be described.
As shown in FIG. 3, the heat treatment apparatus 30 (see FIG. 6) is provided with a rapid temperature rise mechanism 32 that rapidly raises the temperature of the work W, and the rapid temperature rise mechanism 32 is provided with, for example, a coil 33. There is. The coil 33 is connected to the high frequency converter 34, and the high frequency converter 34 is connected to the high frequency power supply 35.

When the metal rod-shaped work W is inserted into the coil 33 connected to the AC high-frequency power supply 35, the work W self-heats even though the coil 33 and the work W are in a non-contact state. This is due to induction heating, in which a high-density eddy current is generated near the surface of the work W by an alternating current, and the Joule heat generated by the generated eddy current generates heat on the surface of the work W.

Next, the relationship between the quenching and tempering time and the temperature according to the comparative example, and the relationship between the quenching and tempering time and the temperature according to the example will be described. In each of the relationship diagrams, the time required for the work is shown on the horizontal axis.

As shown in FIG. 4, (a) is a diagram showing the relationship between the quenching time and the temperature in the combustion type furnace according to the comparative example, in which the temperature is raised to 830 ° C for 20 minutes and the temperature is maintained at 830 ° C. It takes about 90 minutes in total for 60 minutes and several minutes for cooling. (B) is a figure showing the relationship between the tempering time and the temperature by the combustion type furnace according to the comparative example, and it takes 20 minutes to raise the temperature to 200 ° C, 60 minutes to maintain the temperature at 200 ° C, and 15 minutes to cool. It takes about 95 minutes in total. (C) is a figure showing the relationship between the quenching time and the temperature by the quenching furnace equipped with the electric rapid temperature rise mechanism according to the embodiment, and it takes 1.2 seconds to raise the temperature to 830 ° C and the temperature is 830 ° C. It takes about 1 minute in total, 20 seconds for holding and several tens of seconds for cooling. (D) is a diagram showing the relationship between the tempering time and the temperature by the tempering furnace equipped with the electric heating mechanism according to the embodiment, in which the temperature is raised to 200 ° C for several minutes and the temperature is maintained at 200 ° C for more than ten minutes. It takes a total of about 21 minutes for a few minutes to cool down.

In order to obtain a workpiece of the same quality in this way, the total time of quenching and tempering according to the comparative example is about 185 minutes, whereas the total time of quenching and tempering according to the example is about 22 minutes. The time has been greatly reduced.

Next, the heat treatment apparatus 30 will be described.
As shown in FIGS. 5 and 6, the heat treatment apparatus 30 is a quenching furnace in which the work W (see FIG. 7) is individually and continuously quenched by an electric rapid temperature raising mechanism 32 capable of directly raising the temperature. 31 and a tempering furnace 41 for continuously tempering the work W by an electric heating mechanism 42 are provided. Specifically, the heat treatment apparatus 30 includes a single quenching furnace 31, a first tempering furnace 41a and a second tempering furnace 41b for heating the work W at different predetermined times, and a work W from the quenching furnace 31. A switching mechanism 51 for switching the flow of the above to either the first tempering furnace 41a or the second tempering furnace 41b is provided.

The quenching furnace 31 is a short tunnel-shaped furnace, and has a heat insulating wall 36 for maintaining the temperature inside the furnace, an electric rapid heating mechanism 32 provided on the heat insulating wall 36 for rapidly raising the temperature of the work W, and a tunnel shape. A guide passage 37 provided in the heat insulating wall 36 for guiding the work W, a delivery mechanism 38 provided on the base end side of the guide passage 37 and having a feed rod 38a for sending the work W in the guide passage 37, and a guide passage. A cooling jacket 39, which is provided on the tip end side of the 37 and injects a cooling agent for cooling the work W, is provided.

Further, the rapid temperature rise mechanism 32 includes a coil 33 for quenching the work W by high frequency heating. The cooling jacket 39 is connected to a pump 39b that delivers a coolant through the water channel 39a. In the embodiment, the cooling agent is water, but oil may be used, and the material may be used as long as the work W can be cooled.

The tempering furnace 41 (41a, 41b) is a tunnel-shaped furnace longer than the quenching furnace 31, and has a heat insulating wall 44 for maintaining the temperature inside the furnace and an electric heating mechanism provided on the heat insulating wall 44 to heat the work W. 42, a conveyor 45 provided through a long tunnel-shaped heat insulating wall 44 to convey the work W, and a shooter 46 provided on the outlet side of the conveyor 45 to guide the work W of the conveyor 45 to the next process. I have. In the embodiment, of the two tempering furnaces 41 arranged, the high temperature side is the first tempering furnace 41a and the low temperature side is the second tempering furnace 41b.

Further, the heating mechanism 42 includes a plurality of thermocouples 43 for heating the work W with a band heater or the like and tempering the work W at an accurate temperature at predetermined intervals. Therefore, the work W slowly conveyed on the conveyor 45 can be continuously heated at a predetermined temperature.

The switching mechanism 51 includes a table 52, a rail 53 provided on the table 52 so as to extend in a direction perpendicular to the longitudinal direction of the tempering furnace 41, a first tempering furnace 41a movably provided on the rail 53, and a first tempering furnace 41a. It includes a moving support portion 54 that supports the second tempering furnace 41b, and a cylinder 55 that is provided on the table 52 and moves the moving support portion 54 forward and backward.

In the embodiment, the switching mechanism 51 moves the first tempering furnace 41a and the second tempering furnace 41b laterally to switch the flow of the work W, but the switching mechanism 51 is not limited to this and is a single one. The quenching furnace 31 may be moved forward and backward in the lateral direction by a cylinder or the like to switch the flow of the work W, or the flow of the work W may be switched by a guide shooter 56 capable of switching the guide direction on the tip side of the guide passage 37. .. Further, in the embodiment, two tempering furnaces 41 are provided, but the number of tempering furnaces 41 is not limited to this, and the number of tempering furnaces 41 may be one, three, or four, and the number can be increased if tempering can be performed according to the type of work W. It doesn't matter.

Next, the operation of the heat treatment apparatus 30 will be described.
As shown in FIG. 7A, in the heat treatment apparatus 30, the work W2 is charged into the base end side of the guide passage 37 of the quenching furnace 31 (quenching charging step). As shown in (b), the work W2 is moved to the position of the rapid temperature rise mechanism 32 by the feed rod 38a of the feed mechanism 38, and is quenched by high frequency induction heating (quenching heating step). As shown in (c), the work W2 is fed to the guide shooter 56 from the tip end side of the guide passage 37 by the feed rod 38a of the feed mechanism 38. The work W2 is rapidly cooled by the coolant from the cooling jacket 39 (quenching step).

As shown in FIG. 7 (d), the work W2 that has been quenched is moved to the second tempering furnace 41b. Further, the feed rod 38a of the feed mechanism 38 returns to the origin, and the next work W2 is charged into the quenching furnace 31 (tempering charging step). As shown in (e), the work W2 in the second tempering furnace 41b moves in the second tempering furnace 41b by the compare 45 and is tempered by a plurality of heating mechanisms 42. Meanwhile, the next work W2 is quenched in the quenching furnace 31.

As shown in FIG. 7 (f), the work W2 in the second tempering furnace 41b is further moved in the second tempering furnace 41b by the conveyor 45 and kept at a predetermined temperature. During that time, the quenching of the next work W2 is completed, and after quenching, the work W2 is moved into the second tempering furnace 41b, and the plurality of works W2 are continuously tempered in the second tempering furnace 41b (tempering heating step).

As shown in FIG. 8A, the four workpieces W2 are tempered in the second tempering furnace 41b. When a different type of work W1 is charged into the quenching furnace 31, as shown in (b), the work W1 is switched to the first tempering furnace 41a by the switching mechanism 51 (see FIG. 5), and the flow of the work W1 is the first. It is switched to the tempering furnace 41a (switching step). Then, the work W1 that has been quenched is sent out to the first tempering furnace 41a. A plurality of workpieces W1 are continuously tempered in the first tempering furnace 41a. During that time, the second tempering furnace 41b continues to temper the plurality of works W2, and after the tempering is completed (tempering step), it is sent out to the shooter 46 (delivery step).

Next, the effect of the present invention will be described.
According to such a configuration, the heat treatment apparatus 30 includes a quenching furnace 31 in which the work W is individually and continuously quenched by an electric rapid temperature raising mechanism 32 capable of directly raising the temperature of the work W. As the electric rapid temperature rise mechanism 32, for example, high-frequency induced heating in which a high-frequency light source is generated in the coil 33 and heated by an induced current generated in the work W, electronic heating in which an electron beam is applied to the work W, and a high-power laser are used in the work W. There are laser heating that heats the light by hitting it, and condensing heating that collects the light from the light source at one point and heats it using a reflecting mirror.

If the electric rapid temperature rise mechanism 32 directly heats the work W, the entire inside of the furnace is heated by a combustion type furnace using gas, heavy oil, or the like as a heat source as in the prior art, or by electric resistance. Unlike the above-type furnace, in the present invention, the work W itself can be rapidly heated, and the work W can be heated to the target temperature within a few seconds from the start of heating. Therefore, the quenching time, which took 80 minutes or more in the conventional combustion type furnace, can be significantly shortened to less than 1 minute in the present invention. Further, the tempering time, which took 90 minutes or more in the conventional combustion type furnace, can be shortened to about 20 minutes in the electric heating mechanism of the present invention. As a result, a high-mix low-volume work W is produced as a whole production system 10 including a processing device 20 for processing at least a metal work W, a heat treatment device 30 for heat treatment, and a blast device 60 for blasting. It is possible to shorten the cycle time and improve productivity.

Further, by surrounding the work W with the coil 33, the work W can be rapidly heated by high frequency heating. Therefore, the quenching time can be shortened and the productivity can be further improved.

Further, since the work W is continuously and individually quenched by the electric rapid heating mechanism 32 capable of directly raising the temperature, it is possible to cope with the work W of different sizes with a single quenching furnace 31. Further, where the tempering temperature differs depending on the size and type of the work W, a plurality of tempering furnaces 41 having different temperatures are provided, and the flow of the work W is switched to the tempering furnace 41 having an appropriate temperature by the switching mechanism 51. Even if the size and type are different, it can be continuously tempered without time loss. Therefore, productivity can be improved.

Further, the work W (W1, W2) has a dimension of a maximum wall thickness portion of an outer shape of 7 mm or less. Generally, tempering requires an external dimension of 1 inch for 1 hour. In the embodiment of the present invention, since the dimension of the maximum wall thickness portion of the outer shape of the work W (W1, W2) is 7 mm or less, the tempering time can be shortened to 20 minutes or less, and the productivity can be improved. can. Further, in the case of a shaft-shaped, pin-shaped, or bolt-shaped work W, if the surface is heat-treated, the performance as a product may be sufficiently satisfied. The mechanism 32 and the heating mechanism 42 can efficiently perform heat treatment to further improve productivity.

Next, the blasting device 60 will be described.
As shown in FIGS. 9 and 10, the blasting device 60 smoothly includes a support frame 61, a blast main body 62 provided on the upper portion of the support frame 61, and a curved surface 63 inside the blast main body 62. It includes a drum chamber 65 formed by the connected inner wall 64 and into which the work W is charged, and a blast tank 66 provided at the lower part of the support frame 61 for storing the blast grains B.

Further, the blast device 60 includes a blast air passage 67 connected to the drum chamber 65 and blowing air along the inner wall 64 of the drum chamber 65, and a blast grain supply path 68 connected to the blast air passage 67 to supply the blast particles B. , The blast grain recovery passage 69 formed in the blast main body 62 and communicating with the drum chamber 65 to the outside and connected to the blast tank 66, and the exhaust air connected to the drum chamber 65 to blow out the blast grain B. It has a passage 71 and.

Further, in the blasting device 60, the drum chamber 65 is formed in a horizontally long oval shape when viewed from the front. The back side of the drum chamber 65 is closed by a flat wall 65a. The front side of the drum chamber 65 is closed with a transparent flat plate 65b. The blast main body 62 is formed with an upper input port 72 into which the work W is input in the upper part of the drum chamber 65, and an input port lid 73 for closing the upper input port 72 is provided in the support frame 61. It is opened and closed by 74. The blast main body 62 is formed with a lower take-out port 75 from which the work W is taken out in the lower part of the drum chamber 65, and an take-out palate 76 for closing the lower take-out port 75 is provided in the support frame 61 as an take-out port cylinder 77. Is opened and closed by.

The blast main body 62 is formed with a gathering air passage 78 that opens downward from the left and right side portions of the drum chamber 65 along the inner wall 64 and blows air for gathering the work W onto the take-out palate 76. ing.

Further, the blast air passage 67 is provided with a check valve 67a for preventing backflow to the passage side and is connected to the air pump 67b. The blast grain supply passage 68 is provided with a check valve 68a for preventing backflow to the passage side. The exhaust air passage 71 is provided with a check valve 71a for preventing backflow to the passage side and is connected to the air pump 71b. The gathering air passage 78 is provided with a check valve 78a for preventing backflow to the passage side and is connected to the air pump 78b.

Next, the operation of the blasting device 60 will be described.
As shown in FIG. 11A, with the charging port lid 73 of the blasting device 60 open, a plurality of work Ws are loaded into the drum chamber 65 from the upper charging port 72, and the charging port lid 73 is closed (loading step). .. As shown in (b), air is blown into the drum chamber 65 together with the blast particles B from the blast air passage 67. The blast grain B is supplied from the blast tank 66 due to the negative pressure in the vicinity where the blast grain supply path 68 joins the blast air passage 67. Since the air is blown along the inner wall 64 including the oval curved surface 63, the work W and the blast grain B go around the inside of the drum chamber 65 as shown by an arrow while being confused, and the work W is blasted (blasting). Processing process).

As shown in FIG. 11 (c), the supply of air from the blast air passage 67 is stopped. Air is blown into the drum chamber 65 from the exhaust air passage 71. The work W and the blast grain B drum chamber 65 rotate as shown by the arrows. At this time, the blast grain B is discharged from the blast grain recovery path 69 formed in a diameter smaller than the outer diameter of the work W (blast grain discharge step).

As shown in FIG. 12A, air is blown into the drum chamber 65 from the left and right gathered air passages 78 with such a strength that the work W rolls along the inner wall 64, and the work W is shown as an arrow. Collecting on the take-out palate 76 (air collecting process). As shown in (b), the take-out palate 76 is lowered and opened, and the work W is taken out from the lower take-out port 75 (work take-out step). As shown in (c), the take-out palate 76 is closed to return to the origin, and the inlet palate 73 is opened (origin return step).

Next, the effect of the present invention will be described.
According to such a configuration, by throwing the work W into the drum chamber 65 and blowing air along the inner wall 64, the work W moves along the inner wall 64 smoothly connected including the curved surface 63, and the blast grain is formed. Since it rotates in a turbulent manner in B and the drum chamber 65, blasting can be performed in a short time. In the general conventional technique, sorting is required for batch processing of a plurality of workpieces, which takes, for example, 15 minutes. However, in the embodiment of the present invention, sorting work is unnecessary and blasting can be performed in a short time of about 1 minute and 30 seconds. As it is completed, productivity can be improved. Further, since a rotation mechanism such as a geared motor for rotational drive or a bearing as in the prior art is not required, the blast device 60 can be made into a small and simple mechanism.

Further, since the drum chamber 65 has an oval shape, the work W can smoothly rotate in the drum chamber 65 and can be uniformly blasted in a short time. Further, since the drum chamber 65 has a horizontally long oval shape, a wide flat surface is secured in the upper part and the lower part of the drum chamber 65, and the upper inlet 72 and the lower outlet 75 are formed large at each position to form a work. W can be easily put in and taken out, and workability can be improved. Therefore, productivity can be improved.

Further, the blast main body 62 is formed with a take-out palate 76 that opens and closes the lower take-out port 75 so as to open and close downward along the inner wall 64 from the left and right side portions of the drum chamber 65, and works on the take-out palate 76. It is provided with a gathering air passage 78 for blowing air for gathering W. Therefore, unlike the conventional technique, it is not necessary to shake off the blast particles after batch processing to sort the workpieces. In the embodiment of the present invention, air is blown downward along the inner wall 64 from the gathering air passages 78 formed on the left and right side portions of the drum chamber, and the work W is taken out and collected on the palate 76. The work W can be taken out just by opening it. As a result, productivity can be improved.

Further, a blast tank 66 for storing the blast grain B for blasting the work W, and a blast grain recovery path 69 formed in the blast main body 62 to communicate with the drum chamber 65 and the outside and connected to the blast tank 66. The exhaust air passage 71, which is connected to the drum chamber 65 and blows air for discharging the blast particles B, is provided. The blast grain B is collected in the blast grain recovery path 69, and the blast grain B is blown off from the work W by the air from the exhaust air passage 71. Therefore, unlike the conventional technique, it is not necessary to shake off the blast particles after batch processing and blow air on the work to blow the blast particles. In the embodiment of the present invention, since the recovery of the blast particles B and the processing of blowing the blast particles B from the work W are performed at the same time, the processing time after the blasting process can be shortened and the productivity can be improved.

Further, since the blast grain recovery path 69 is formed in a diameter smaller than the outer diameter of the work W and is formed in a plurality of blast main body portions 62, the work W is prevented from coming out of the drum chamber 65. , The blast grain B can be easily recovered from the plurality of blast grain recovery paths 69. That is, the same effect as shaking off the blast grain B with a net can be obtained. Therefore, the blast grains B can be recovered in a short time and the productivity can be improved.

Next, the packing device 90 will be described.
As shown in FIGS. 13, 14, and 15, the packing device 90 includes a frame 91, a label printer 92 that reads data of the work W (see FIG. 16) and issues a label, and a composite that houses the work W. It includes a bag stock section 94 for stocking a resin bag 93 (see FIG. 16), and a transport mechanism 95 for transporting the bag 93 from the bag stock section 94.

Further, the packing device 90 includes a bag receiving mechanism 100 that receives the conveyed bag 93 from below, a bagging mechanism 110 that temporarily places the work W and puts it in the bag 93, and oil is applied to and removed from the bag 93. It is provided with an oil-applying degassing mechanism 115 to be concerned and a sealing mechanism 120 for sealing the bag 93.

The transport mechanism 95 is provided on the frame 91 so as to be movable and ascendable with respect to the front-rear direction (longitudinal direction) of the packing device 90. At the lower end of the transport mechanism 95, the elevating main body 96 formed long in the width direction of the packing device 90, the elevating suction pad 97 provided on the lower surface of the elevating main body 96, and the elevating suction pad 97 are connected. It includes a suction pump 98 and a silicon press portion 99 provided on the lower surface of the elevating main body portion 96.

The bag receiving mechanism 100 is formed on the frame 91 so as to be horizontally long in the width direction at a position adjacent to the fixed suction pad 101 facing the elevating suction pad 97 and adjacent to the rear side of the fixed suction pad 101 and lower than the fixed suction pad 101. A rubber receiving portion 103 made of rubber adjacent to the rear side of the heater 102 and formed horizontally in the width direction at a position higher than the heater 102, and a frame 91 so as to be swingable in the vertical direction. The rocking plate 104 is provided. The fixed suction pad 101 is connected to the suction pump 101a.

The rocking plate 104 has a frame plate portion 106 that surrounds the fixed suction pad 101, the heater 102, and the rubber receiving portion 103 and has an opening 105 that opens along the outer periphery thereof, and after the frame plate portion 106. It includes a downhill inclined portion 107 that inclines backward from the end portion, and a hinge 108 provided on the lower surface on the rear side of the frame plate portion 106. The swing plate 104 is swung by a swing cylinder 109 provided on the frame 91. When the swing plate 104 is not swinging, the apex of the rubber receiving portion 103 is at a higher position than the frame plate portion 106.

The bagging mechanism 110 includes a scoop 111 provided on the frame 91 so that the work W can be inserted and moved back and forth into the open bag 93 at a predetermined position, and a scoop advancing / retreating mechanism provided on the frame 91 to advance and retreat the scoop 111. It includes 112, a pusher 113 provided on the scoop 111 to push out the work W, and a pusher cylinder 114 for moving the pusher 113 forward and backward.

The oil application degassing mechanism 115 is connected to the nozzle cylinder 116 provided in the frame 91, the vertically thin nozzles 117 provided in the nozzle cylinder 116 so as to be able to advance and retreat and enter the bag 93, and the nozzle 117 to supply oil. It is provided with an oil pump 118 for sending out and a suction pump 119 connected to a nozzle 117 for sucking air. The oil pump 118 and the suction pump 119 can be switched by the switching valve 117a. The oil pump 118 and the suction pump 119 may be connected to independent nozzles 117 without using the switching valve 117a.

Among the above-mentioned components, the seal mechanism 120 includes a transport mechanism 95 and a bag receiving mechanism 100. Further, at the lower part of the frame 91, a collection box 121 is provided for collecting the sealed bag 93 containing the work W by sliding it on the rocking plate 104.

Next, the operation of the packing device 90 will be described.
As shown in FIG. 16A, the bag 93 is sucked and conveyed from the bag stock portion 94 (see FIG. 13) by the elevating suction pad 97 of the transport mechanism 95 shown by the imaginary line. The bag 93 is opened by temporarily lowering the transport mechanism 95 shown by the solid line, sucking the lower side of the bag 93 on the fixed suction pad 101, and raising the transport mechanism 95 (bag setting step). The scoop 111 containing the work W is advanced into the bag 93, the pusher 113 is further advanced to push the work W into the bag 93, and the pusher 113 is retracted (work pushing step).

As shown in FIG. 16B, the scoop 111 is retracted and the nozzle 117 is advanced into the bag 93 (nozzle advance step). At this time, since the work W is moved to the back of the rolling bag 93 by the downwardly inclined portion 107 of the swing plate 104, the nozzle 117 can be easily advanced to the entrance of the bag 93 without the work W getting in the way. can. The transport mechanism 95 is lowered, and the nozzle 117 is sandwiched between the rubber receiving portion 103 and the press portion 99 and lightly pressed. This closes the entrance of the bag 93 (bag closing step). Further, the oil pump 119 injects oil into the bag 93 through the nozzle 117 (oil injection step).

At this time, since the entrance of the bag 93 is closed, the oil does not leak to the outside. Further, since the apex of the rubber receiving portion 103 is located higher than the frame plate portion 106, it is possible to prevent the oil contained in the bag 93 from being blocked by the rubber receiving portion 103 and leaking to the outside. Therefore, it is possible to prevent the oil from scattering, reduce the amount of wasted oil, and improve the packing condition.

Further, the air in the bag 93 is degassed by the suction pump 119 (degassing step). As a result, it is possible to prevent a plurality of work Ws from colliding with each other in the bag 93 and easily being scratched, and it is possible to easily carry the commercialized work W. Further, by degassing, the oil can be spread throughout the bag 93 to eliminate unevenness, and the rust preventive effect of the commercialized work W can be improved. As shown in FIG. 16 (c), the nozzle 117 is stepped from the bag 93 (nozzle retreat step).

As shown in FIG. 17A, the transport mechanism 95 is further lowered and the press portion 99 is pressed against the heater 102 to seal the entrance of the bag 93 (seal step). As shown in (b), the transport mechanism 95 is raised, the swing cylinder 109 is operated to swing the swing plate 104, and the work W commercialized by bagging is slid to slide the recovery box 121 ( (See FIG. 13) to collect (bag collection step). As shown in (c), the swing cylinder 109 is operated to return the swing plate 104 to the origin (origin return step).

Next, the effect of the present invention will be described.
According to such a configuration, since the downward inclined portion 107 of the swing plate 104 is inclined during the sealing process, the bag 93 is also inclined, and the contact surface between the bag 93 and the heater 102 can be minimized. Therefore, it is possible to prevent the heater 102 from coming into contact with a portion other than the seal portion and forming a hole in the bag 93. Further, since the frame plate portion 106 is provided so as to surround the heater 102 during the bag collection step, the bag 93 can be easily separated from the heater 102 by lifting the peripheral portion of the bag 93 around the heater 102.

Next, the work time accumulation graph according to the comparative example and the work time accumulation graph according to the embodiment will be described.
As shown in FIG. 18, in the comparative example of (a), which is a conventional production system, 103.8 seconds for setup per work, 44.4 seconds for incidental work, incidental work, and irregular correspondence 2. It took 2 seconds. In this respect, in the production system (b) of the embodiment, the man-hours are significantly reduced to 38.3 seconds for setup per piece, 32.9 seconds for incidental work, and 2.2 seconds for incidental work and irregular correspondence. It has been reduced and the target cycle time of 92.3 seconds has been cleared.

In the embodiment, the production system 10 is provided with a composite processing device as the processing device 20, but the processing device 20 is not limited to this, and the processing device 20 is a processing device for performing one type of processing, an NC machining center, a press device, and forging. The type of processing does not matter as long as it is machined such as equipment. Further, in the embodiment, the production system 10 includes the grinding machine 80, but the grinding machine 80 may be omitted.

In the embodiment, the heat treatment apparatus 30 has two tempering furnaces 41 for one quenching furnace 31, but is not limited to this, and one, three, or four quenching furnaces for one quenching furnace 31. It may be 31.

In the embodiment, high frequency induction heating by the coil 33 is adopted as the heating method of the quenching furnace 31 of the heat treatment apparatus 30, but the heating method is not limited to this, and if it is an electric type, it may be condensing heating, electronic heating, or laser heating. There is no problem.

In the embodiment, the shape of the drum chamber 65 of the blasting device 60 is an ellipse or a perfect circle when viewed from the front, but the shape is not limited to this, and the shape of the drum chamber 65 may be an ellipse or a circle when viewed from the front. The shape does not matter as long as the inner wall 64 is smoothly formed by the curved surface 63 and the work W can move while rotating in the drum chamber 65 by air.

That is, the present invention is not limited to the examples as long as the actions and effects of the present invention are exhibited.

The technique of the present invention is suitable for a blasting device that blasts a work.

10 ... Production system 20 ... Processing equipment (composite processing equipment)
30 ... Heat treatment device 31 ... Quenching furnace 32 ... Rapid temperature rise mechanism 33 ... Coil 41, 41a, 41b ... Tempering furnace 42 ... Heating mechanism 43 ... Thermoelectric pair 45 ... Conveyor 46 ... Shooter 51 ... Switching mechanism 60 ... Blasting device 61 ... Blast Main body 63 ... Curved surface 64 ... Inner wall 65 ... Drum chamber 67 ... Blast air passage 72 ... Upper inlet 75 ... Lower outlet 80 ... Grinding machine 90 ... Packing device 95 ... Transport mechanism 96 ... Elevating main body 97 ... Elevating suction pad 99 ... Press part 100 ... Bag receiving mechanism 101 ... Fixed suction pad 102 ... Heater 103 ... Rubber receiving part 104 ... Swing plate 106 ... Frame plate part 107 ... Downward inclined part 110 ... Bag packing mechanism 115 ... Oil application degassing mechanism 117 ... Nozzle W, W1, W2 ... Work B ... Blast grain

In order to achieve the above object, the blasting device of the present invention is used.
A blasting device that blasts the work.
A drum chamber formed by a blast main body and an inner wall smoothly connected to the inside of the blast main body including a curved surface and into which the work is loaded, and air connected to the drum chamber and along the inner wall of the drum chamber. It is characterized by having a blast air passage for blowing in, and a blast grain recovery path formed in the blast main body portion to communicate with the drum chamber and the outside and have a diameter smaller than the outer size of the work. And.

Claims (5)

A blasting device that blasts the work.
A drum chamber formed by a blast main body and an inner wall smoothly connected to the inside of the blast main body including a curved surface and into which the work is loaded, and air connected to the drum chamber and along the inner wall of the drum chamber. A blasting device characterized by being equipped with a blast air passage that blows in. The blasting device according to claim 1.
The drum chamber is formed into a horizontally long oval or a perfect circle when viewed from the front.
A blasting device including an upper loading port formed in the upper part of the drum chamber and into which the work is loaded, and a lower ejection port formed in the lower part of the drum chamber and from which the work is taken out. The blasting device according to claim 2.
The blast main body is formed by opening a take-out palate that opens and closes the lower take-out port so as to be openable and closable, and opening downward from the left and right side portions of the drum chamber along the inner wall, and the work is brought onto the take-out palate. A blasting device equipped with a gathering air passage that blows air for collecting. The blasting device according to any one of claims 1 to 3.
In the blast tank for storing the blast grains for blasting the work, the blast grain recovery path formed in the blast main body and communicating the drum chamber with the outside and connected to the blast tank, and the drum chamber. A blasting device provided with an exhaust air passage that is connected and blows air to expel the blast particles. The blasting device according to any one of claims 1 to 4.
A blast device having a diameter smaller than the outer diameter of the work and a plurality of blast grain recovery paths formed in the blast main body.

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