TWI609744B - Bead strike device - Google Patents

Description

Bead strike device

The present invention relates to a beating device for projecting a projecting material onto a workpiece.

As a bead hitting device that projects a projection material onto a workpiece, a technique as disclosed in Patent Document 1 is known. The bead hitting device of Patent Document 1 is a device that circulates a projecting material that is projected onto an object to be processed while grading to stabilize the particle size of the projecting material. The apparatus has: a hopper having a lower portion divided into two and capable of storing a projection material; a bucket elevator that conveys the projected projection material to the hopper; and a vibration screening machine that separates the appropriate particle size from the circulating projection material The projection material, the projection material that deviates from the appropriate particle size, and the foreign matter.

[Previous Technical Literature]

[Patent Document 1] Japanese Patent No. 4879322

In general, the bead hitting device uses a bucket elevator to carry the projecting material to the upper side, and then falls to the projection device, and the projection material falls to the projection device. The process is graded and the classified projectile is projected onto the object to be treated. However, in order to perform classification in the process of dropping the projecting material, it is necessary to ensure the height of the apparatus to some extent, so that the height of the entire apparatus is increased.

In view of the above, it is an object of the present invention to provide a bead hitting device which can classify a projection material through a simple structure.

The beating device disclosed in the present invention is for classifying a projection material supplied by a projection material supply mechanism and projecting it to a workpiece by a projection mechanism, comprising: grading having a plurality of passage holes through which only a projection material smaller than a predetermined size is allowed to pass a member; a lateral conveyance mechanism that laterally conveys the projection material supplied to the classifying member by the projection material supply mechanism on the classifying member; and a guide wire that is dropped by the classifying member and guided to the guide wire of the projection mechanism.

According to the above mechanism, on the classifying member, the projecting material supplied from the projecting material supply mechanism to the classifying member is laterally conveyed by the lateral transport mechanism, and the projecting member is classified by the classifying member having the through hole in the lateral conveyance process. In this manner, while the projecting material is conveyed laterally, only the projecting material smaller than the predetermined size can be sent to the guide wire. As a result, the lateral conveyance and classification of the projecting material can be simultaneously performed, and the height of the bead hitting device can be suppressed. That is, in the prior art, the projection material is classified and then conveyed in the lateral direction, or is horizontally conveyed and classified. Therefore, lateral conveyance and classification are required separately, but in the structure of the present invention, the above two steps can be simultaneously performed. Therefore, it is not necessary to ensure the space (height) of the two steps separately, and the projection material can be classified by a simple structure.

Further, the bead blasting device may further have a foreign matter removing portion that is open toward the end of the classifying member and that can recover foreign matter that has not passed through the through hole.

Further, the lateral transport mechanism in the bead striking device may include a screw that transports the projecting material laterally by rotating.

In addition, the first horizontal conveyance mechanism that conveys the projection material in the first horizontal direction and the second horizontal conveyance mechanism that conveys the second lateral direction; and the projection material supplied from the projection material supply mechanism may be branched to the first The lateral conveying mechanism and the flow dividing member of the second lateral conveying mechanism.

Further, the projection material supply mechanism supplies the projected projection material to the lateral conveyance mechanism, thereby forming a circulation system of the projection material, and the bead breaking device may further have a separation line that separates a part of the projection material in the circulation system; A vibratory screening machine for selecting and classifying the projection material separated by the separation line in accordance with a prescribed particle size reference.

1‧‧‧ bucket elevator

2‧‧‧Classification roller

2a‧‧‧1st class roller

2b‧‧‧2nd classification drum

3‧‧‧ transverse screw

3a‧‧‧1st transverse screw

3b‧‧‧2nd transverse screw

4‧‧‧Projecting impeller

4a‧‧‧1st projection impeller

4b‧‧‧2nd projection impeller

5‧‧‧ Guide line

5a‧‧‧1st guide line

5b‧‧‧2nd guide line

6‧‧‧Shunting components

7‧‧‧Support members

8‧‧‧Separation line

9‧‧‧Vibration screening machine

10‧‧‧Bearing device

11‧‧‧ bucket

12‧‧‧Circular belt

21‧‧‧through hole

22‧‧‧ Entrance

23‧‧‧Export

24‧‧‧ screw

36‧‧‧1st projectile removal line

37‧‧‧ Foreign material removal line

38‧‧‧2nd projectile removal line

39‧‧‧ Branch board

41‧‧‧Projection room

60‧‧‧Projected material recycling department

71‧‧‧Separate exit

91‧‧‧Reset line

122a‧‧‧Transporting rotator

122b‧‧‧Transporting rotator

124a‧‧‧Cylinder components

124b‧‧‧Cylinder components

126a‧‧‧Electric motor

126b‧‧‧Electric motor

127‧‧‧Feed institutions

128a‧‧‧1st gear

128b‧‧‧1st gear

130a‧‧‧2nd gear

130b‧‧‧2nd gear

132a‧‧‧Chain

132b‧‧‧Chain

133‧‧‧Electric motor

134‧‧‧Connecting members

135‧‧‧ horizontal board

135a‧‧‧ inclined section

135b‧‧‧ inclined section

136‧‧‧ vertical board

411‧‧‧Processed material handling device

391‧‧‧through hole

w‧‧‧Processed objects

Fig. 1 is a front cross-sectional view showing a schematic configuration of a bead blasting apparatus according to an embodiment.

Fig. 2 is a side cross-sectional view showing a schematic configuration of a bead blasting device according to an embodiment.

Figure 3 is a plan view of the transport rotator.

Figure 4 is a perspective view of the classification drum.

Fig. 5 is a perspective view showing a schematic configuration of a flow dividing member.

Fig. 6 is a perspective view of a classifying drum of another embodiment.

Figure 7 is a side cross-sectional view of another staged drum of another embodiment. Figure.

Embodiments of the present invention will be described below with reference to the drawings. The beating device 10 of the present embodiment is a device for classifying and projecting a circulating projecting material onto a workpiece, and as shown in Figs. 1 and 2, has a bucket elevator 1 for supplying a projection material (projection material supply) An example of a mechanism); and a projection impeller 4 (an example of a projection mechanism) that projects a projection material onto the workpiece w. The workpiece w can be, for example, a coil spring. Further, the beating device 10 has a classifying drum 2 (an example of a classifying member) having a plurality of through holes 21 allowing only a projecting material smaller than a predetermined size to pass; a transverse screw 3 (an example of a lateral conveying mechanism), The projecting material supplied by the bucket elevator 1 is laterally carried on the classifying drum 2; and a guide wire 5 that guides the projecting material dropped by the classifying drum 2 to the projecting impeller 4. Further, the bead hitting device 10 has a first projecting material clearing line 36 and a foreign matter removing line 37 (a foreign matter removing portion) disposed beside the guide wire 5.

As shown in Fig. 2, the bucket elevator 1 is disposed to extend in the longitudinal direction, and conveys the projecting material from the lower portion of the beating device 10 to the upper portion in the longitudinal direction. The bucket elevator 1 has an endless looped endless belt 12 that circulates up and down, and a plurality of buckets 11 that are mounted on the endless belt 12. The circulation belt 12 circulates the bucket 11 up and down in the vertical direction. The bucket 11 picks up the projected projecting material and carries it to the upper side, and supplies it to the transverse screw 3. Further, the projected projecting material is housed in a projecting material collecting portion 60 to be described later.

As shown in Fig. 1, the projection impeller 4 (the first projection impeller 4a and the second projection impeller 4b) is disposed inside the projection chamber 41, and the projection material is projected onto the workpiece w in the projection chamber 41 by the centrifugal force of rotation. on. In the example described in Fig. 1, the first projection impeller 4a is disposed on the right side, and the second projection impeller 4b is disposed on the left side. The projection impeller 4 projects the projection material from the left and right directions to the workpiece w. In the projection chamber 41, the workpiece conveyance device 411 that conveys the workpiece w in the lateral direction (the horizontal direction in the first drawing) is disposed. The projection impeller 4 projects the projection material onto the workpiece w being conveyed. Further, the lower portion of the projection chamber 41 is connected to the projecting material collecting portion 60, and the projected projecting material is collected from the projection chamber 41 to the projecting material collecting portion 60. The projecting material collecting unit 60 is formed in the lower portion of the bucket elevator 1 , and the projection material collected in the projecting material collecting unit 60 is scooped up by the bucket 11 . Thus, the projection material projected by the projection impeller 4 is longitudinally conveyed by the bucket elevator 1 and supplied again to the transverse screw 3, thus forming a circulation system in which the projection material circulates.

As shown in FIGS. 1 to 3, the workpiece conveyance device 411 includes conveyance rotators 122a and 122b on which the workpiece w can be placed, and conveyance in the lateral direction (left-right direction of FIG. 1) placed on the conveyance rotator. The feed mechanism 127 of the workpiece w on 122a, 122b.

The transport rotators 122a, 122b have a pair of cylindrical members 124a, 124b and motors 126a, 126b that drive the rotation of the cylindrical members 124a, 124b. The cylindrical members 124a, 124b are inclined such that one end portion is higher than the other end portion. That is, the cylindrical members 124a and 124b are inclined at an angle θ with respect to the horizontal direction. The inclination angle θ of the cylindrical members 124a, 124b is adjusted between 3 and 13 degrees. The gap between the cylindrical members 124a, 124b is more than The processed object w has a small diameter. The workpiece w is disposed between the cylindrical members 124a and 124b such that its axis is substantially parallel to the axes of the cylindrical members 124a and 124b (see Fig. 2). That is, the workpiece w is disposed laterally between the cylindrical members 124a and 124b. When the motors 126a, 126b drive the cylindrical members 124a, 124b to rotate, the workpiece w on the cylindrical members 124a, 124b rotates about its axis. In this way, the object to be projected can be projected onto the entire surface of the workpiece w.

The feed mechanism 127 has first gears 128a and 128b disposed on one side, second gears 130a and 130b disposed on the other side, and first pulleys 128a and 128b and second gears 130a and 130b. Chains 132a, 132b. The first gear 128a and the second gear 128b are disposed at intervals in the axial direction. The first gear 128a and the first gear 128b are connected by a shaft (not shown). Therefore, when the first gear 128a rotates, the first gear 128b also rotates. The second gear 130a and the second gear 130b are disposed at intervals in the axial direction, and are connected by a shaft (not shown). The shaft that connects the second gears 130a, 130b is driven by the motor 133. The second gears 130a and 130b are driven to rotate by the motor 133, and the chains 132a and 132b are rotated counterclockwise (in the direction of the arrow indicated by the one-dot chain line in Fig. 2). Thus, the first gears 128a and 128b also rotate. That is, the first gears 128a and 128b are driven gears, and the second gears 130a and 130b are drive gears.

The chain 132a is stretched between the first gear 128a and the second gear 130a, and the chain 132b is laid between the first gear 128b and the second gear 130b. As shown in Fig. 2, the chain 132a and the chain 132b are connected by a connecting member 134 connections. The connecting member 134 has a horizontal plate portion 135 whose one end is detachably attached to the chain 132a, the other end is detachably mounted on the chain 132b, and a vertical plate portion 136 which is protruded from the center of the horizontal plate portion 135. .

The horizontal plate portion 135 has inclined portions 135a, 135b extending from the chains 132a, 132b to the lower side. Since the horizontal plate portion 135 has the inclined portions 135a, 135b, the horizontal plate portion 135 and the transport rotators 122a, 122b (in detail, the cylindrical members 124a, 124b) are formed with sufficient intervals, and can be processed. The object handling device 411 saves space.

As shown in Fig. 2, the vertical plate portion 136 extends upward from the center of the horizontal plate portion 135. The vertical plate portion 136 protrudes upward from between the pair of transport rotators 122a, 122b (cylindrical members 124a, 124b). The vertical plate portion 136 abuts against one end of the workpiece w (the rear end of the workpiece w in the conveyance direction) between the cylindrical members 124a and 124b.

As described above, in the workpiece conveyance device 411, the workpiece w is disposed laterally between the cylindrical members 124a and 124b of the conveyance rotators 122a and 122b. Further, the vertical plate portion 136 of the connecting member 134 is abutted at the rear end of the workpiece w placed in the lateral direction. Therefore, when the chains 132a, 132b are rotated by the motor 133, the connecting members 134 connecting the chains 132a, 132b are also moved laterally, and the workpiece w abutting on the vertical plate portion 136 of the connecting member 134 is laterally conveyed. At this time, the cylindrical members 124a, 124b rotate, and the workpiece w also rotates around its axis. Therefore, the workpiece w is carried by the lateral direction.

Classification drum 2 (first classification drum 2a, second classification drum 2b) The cylindrical shape has an inlet 22 at one end in the axial direction and an outlet 23 at the other end, and is disposed in the horizontal direction in the axial direction. As shown in Fig. 4, the classifying drum 2 has a plurality of passage holes 21 through which only a projecting material smaller than a predetermined size is allowed to pass. A plurality of holes 21 are formed in the wall surface of the lower portion of the classifying drum 2, and are opened downward. Thus, the projecting material smaller than the predetermined size passes through the through hole 21 and falls downward. For example, when it is desired to project a projection material having a diameter of 10 mm or less to the workpiece w, the diameter of the passage hole 21 is set to 10 mm in advance, and the projection material having a diameter of 10 mm or less can pass through the through hole 21 and fall downward. The pair of first classification drums 2a and 2nd classification drums 2b are disposed laterally at opposite positions so that the end portions on the inlet 22 side face each other. In the example shown in Fig. 1, the first classification drum 2a is disposed on the right side, and the second classification drum 2b is disposed on the left side. Further, the classifying drum 2 covers the downstream side of the transverse screw 3 that laterally conveys the projecting material.

The transverse screw 3 (the first lateral screw 3a and the second lateral screw 3b) has blades extending in a spiral shape in the axial direction, and is disposed in the horizontal direction in the axial direction. The projecting material is carried in the horizontal direction by rotating the blades. The transverse screw 3 is inserted into the classification drum 2, and the projection material is conveyed in the axial direction of the classification drum 2. The first transverse screw 3a is inserted into the first classification drum 2a, and the second lateral screw 3b is inserted into the second classification drum 2b. The rotation directions of the spiral blades of the first lateral screw 3a and the second lateral screw 3b are opposite to each other, and the projection material is conveyed in the opposite direction. In the example shown in Fig. 1, the first transverse screw 3a is directed to the right, and the second lateral screw 3b is directed to the left to carry the projection material. Further, the respective ends of the first lateral screw 3a and the second lateral screw 3b are integrally connected, and are oriented Rotate in one direction.

The guide wire 5 (the first guide wire 5a, the second guide wire 5b) has a tubular shape, and the inside thereof allows passage of the projecting material, the upper end portion thereof is opened toward the classifying drum 2, and the lower end portion thereof is opened toward the projection impeller 4. In the example shown in Fig. 1, both end portions of the first guide wire 5a on the right side are opened toward the first classification drum 2a and the first projection impeller 4a, and both end portions of the second guide wire 5b on the left side face the second classification drum 2b. The second projection impeller 4b is open. Further, the guide wire 5 extends from the vicinity of the classification drum 2 to the vicinity of the projection impeller 4, and guides the projection material that has fallen downward through the passage hole 21 of the classification drum 2 to the projection impeller 4. The guide wire 5 extends downward, and the projecting material falls within the guide wire 5 due to its own weight.

The first projecting material clearing line 36 is disposed adjacent to the guide wire 5. Further, the first projecting material clearing line 36 is opened toward the classifying drum 2 for recovering the projecting material which does not flow into the guide wire 5 among the projecting materials passing through the through hole 21 of the classifying drum 2.

The foreign matter removal line 37 is disposed below the outlet 23 of the classification drum 2 and opens toward the classification drum 2. In other words, the foreign matter removal line 37 is opened toward the end of the classification drum 2 on the downstream side in the conveyance direction of the projection material, and the article that has not passed through the classification drum 2 is collected as a foreign matter. Further, it is preferable to set the length of the classifying drum 2 so that the projecting material that can pass through the through hole 21 is not recovered to the foreign matter removing line 37. That is, the projection material supplied onto the classifying drum 2 is gradually passed through the through hole 21 in the process of being transported from one end of the classifying drum 2 to the other end, and then recovered to the guide wire 5 or the first projecting material clearing line 37. . Next, the projection material that can pass through the hole 21 is completely After the portion is recovered, foreign matter that cannot pass through the hole 21 is recovered from the other end of the classifying drum 2 to the foreign matter removing line 37. Therefore, it is preferable to set the circulation amount (per unit time) of the projection material circulating inside the beating device 10 and the length of the classification drum 2 so that the projection material that can pass through the through hole 21 is not carried to the foreign matter removal line 37.

In addition, the projection material is sometimes recovered to the foreign matter removal line 37. Therefore, the beating device 10 further includes a second projecting material clearing line 38 branched from the foreign matter removing line 37, and a branching plate 39 disposed at a branching portion of the second projecting material clearing line 38. The second projecting material clearing line 38 is connected to the foreign matter removing line 37, and the projecting material flowing into the foreign matter removing line 37 is branched and recovered. The branch plate 39 has a plurality of through holes 391 that allow only the projecting material to pass. In this manner, the projecting material smaller than the predetermined size flows into the second projecting material clearing line 38 through the through hole 391. The projection material that has flowed into the second projecting material removal line 38 is recovered and reused. In addition, the foreign matter that cannot pass through the hole 391 is recovered to the foreign matter removal line 37.

Further, the beating device 10 has a flow dividing member 6 that diverts the projection material supplied from the bucket elevator 1 to the first lateral screw 3a and the second lateral screw 3b, and a support member 7 disposed below the flow dividing member 6. . As will be described in detail later, the flow dividing member 6 divides the projection material supplied from the bucket 11 into the first transverse screw 3a and the second lateral screw 3b substantially equally. The support member 7 receives the projection material supplied from the bucket 11. The projection material that has fallen onto the support member 7 is carried by the transverse screw 3 to the classification drum 2. In addition, the beating device 10 has a separation line 8 that separates a part of the projection material in the circulation system; and is selected according to a predetermined particle size reference and separated by separation The vibration screening machine 9 of the projection material after the line 8 is separated (see Fig. 2).

As shown in Fig. 5, the flow dividing member 6 is a member formed by combining a pair of plate members, and is disposed above the connection portion between the first transverse screw 3a and the second lateral screw 3b. Further, as shown in FIGS. 1 and 2, the flow dividing member 6 is opposed to the supply position at which the projection material is supplied by the bucket 11, and the projection material supplied from the bucket 11 is branched. The pair of materials constituting the flow dividing member 6 are inclined to each other, and one end portion is connected, and the other end portion is spread out to the left and right, and the projection material is branched to the right and left to the first lateral screw 3a and the second lateral screw 3b.

The support member 7 is disposed below the connection portion between the first lateral screw 3a and the second lateral screw 3b, and extends in the horizontal direction, and covers the lower portion of each of the transverse screws 3 on the upstream side in the conveyance direction of the projection material. In this way, the support member 7 supports the projection material conveyed by each of the transverse screws 3 from below, and prevents the projection material from falling. Further, on the support member 7, there is a separation outlet 71 opening, and a separation line 8 is connected to the separation outlet 71.

The sub-line 8 has a tubular shape, and the inside thereof allows the passage of the projecting material, one end portion is connected to the separation outlet 71, and the other end portion is connected to the vibratory screening machine 9. A part of the projection material supplied from the bucket 11 to the transverse screw 3 is guided from the separation outlet 71 through the separation line 8 to the vibration screening machine 9. Further, the number of the projection materials flowing into the separation line 8 can be set such that the entire projected projection material flows into the separation line 8 at a time within a predetermined set time. For example, when the amount of the projection material flowing into the separation line 8 is a%/min, all of the projecting material passes through the separation line 8 in an ideal state (100/a) minutes. In this way, the particle size of the projection material projected onto the workpiece w can be appropriately managed, and the bead processing of the workpiece w can be appropriately performed. For example, from throwing The number of projection materials flowing into the separation line 8 is preferably 1% or more of the total of the circulating projection materials from the viewpoint of limiting the particle size of the target material to a predetermined range. If the number of separated projecting materials is less than 1%, a sufficient amount of the projecting material cannot be sent to the vibratory screening machine 9, and thus it is difficult to limit the particle size of the projecting material to a predetermined range. Further, the set time can be determined by the ratio of the projection material (projecting material passing through the screen) separated by the vibration screening machine 9 to be described later. It is also possible to set the projection time of the vibration screening machine 9 to be shortened, and the setting time is lengthened by the fact that the projection material of the vibration screening machine 9 is small.

The vibrating screen machine 9 has a mesh screen (not shown) which can be used to screen the separated projecting material in accordance with a predetermined particle size standard. According to the vibration screening machine 9, only the projection material larger than the predetermined size remains on the screen, and the projection material smaller than the predetermined size passes through the screen. Further, the vibration screening machine 9 is connected to the reset line 91. One end of the reset line 91 is connected to the vibration screening machine 9, and the other end is connected to the projecting material collecting portion 60. The reset line 91 sends the projection material remaining on the screen (not shown) of the vibration screening machine 9 to the projecting material collecting unit 60. In this way, the projection material larger than the predetermined particle size reference is returned to the circulation system.

Next, a method of classifying and projecting a projection material onto the workpiece w by the bead hitting device 10 having the above configuration will be described. In the bead hitting device 10 described above, first, the projecting material conveyed to the upper side by the bucket 11 is supplied from the obliquely upward direction of the flow dividing member 6 to the transverse screw 3. The supplied projecting material is branched to the right and left by the flow dividing member 6, and is distributed to the left and right first transverse screw 3a and the second lateral screw 3b. Next, the projecting material is conveyed to the left and right by the first lateral screw 3a and the second lateral screw 3b, respectively. So, can be horizontal Separate the projectile. Further, when the cross-screw 3 conveys the projecting material, the projecting material is conveyed laterally on the classifying drum 2. At this time, the conveyed projection material is classified by the classification drum 2, and only the projection material having a predetermined size passes through the passage hole 21 of the classification drum 2 and falls downward. The projecting material that has fallen downward flows into the guide wire 5 disposed below the classifying drum 2. Further, among the dropped projecting materials, the missing projecting material that does not flow into the guide wire 5 is recovered by the first projecting material clearing line 36 adjacent to the guide wire 5. On the other hand, the projecting material that has not passed through the through hole 21 of the classifying drum 2 is still laterally conveyed by the transverse screw 3, and is discharged from the outlet 23 of the classifying drum 2, and is recovered as a foreign matter to the foreign matter removing line 37.

The projection material that has flowed into the guide wire 5 falls downward along the guide wire 5, and is guided to the projection impeller 4, and is projected by the projection impeller 4 to the workpiece w. In addition, the projected projecting material is collected from the projection chamber 41 to the projecting material collecting portion 60, and is again transported from the projecting material collecting portion 60 to the upper side by the bucket elevator 1 to be supplied to the transverse screw 3. The projection material is circulated in this way, and the conveyance and projection of the projection material are repeated.

Further, during the circulation of the projecting material, a part of the projecting material flows into the separation line 8. In the above-described bead hitting device 10, a part of the projection material supplied from the bucket 11 to the transverse screw 3 flows into the separation line 8 from the separation outlet 71 of the support member 7. The projection material is conveyed to the vibration screening machine 9 along the separation line 8, and is sorted and classified by the vibration screening machine 9 in accordance with a predetermined particle size standard. The projecting material larger than the predetermined particle size reference is conveyed from the vibration screening machine 9 to the projecting material collecting unit 60 along the reset line 91, and then transported again by the bucket elevator 1 to the upper side.

As described above, in the bead hitting apparatus 10 of the present embodiment, the projection material supplied from the bucket 11 is laterally conveyed by the transverse screw 3 on the classification drum 2, and the through-hole is transmitted through the lateral conveyance. The classification drum 2 of 21 classifies the projection material. In this manner, the projecting material that is smaller than a predetermined size can be sent to the guide wire 5 while the projecting material is conveyed in the lateral direction. As a result, the lateral conveyance and classification of the projecting material can be simultaneously performed, and the height of the bead hitting device 10 can be suppressed. That is, in the prior art, the projection material is classified and then conveyed laterally, or horizontally conveyed and classified. Therefore, it is necessary to carry out lateral conveyance and classification separately. However, in the above embodiment, two steps can be simultaneously performed. Therefore, it is not necessary to ensure the space (height) of the two steps separately, and the projection material can be classified by a simple structure.

In addition, since the foreign matter that has not passed through the hole 21 is sent to the foreign matter removing line 37 that opens toward the outlet 23 of the classifying drum 2, the foreign matter can be easily removed. Moreover, since the projection material is conveyed by the transverse screw 3, the projection material can be smoothly conveyed by the rotation of the screw, and the projection material can be smoothly classified.

Further, according to the above-described embodiment, the projecting material can be branched by the flow dividing member 6 and the first lateral screw 3a and the second lateral screw 3b can be transported to the left and right. In this way, the bead hitting device 10 can be formed into a simple structure. In other words, when the projection material is projected through the first projection impeller 4a and the second projection impeller 4b, it is necessary to divide the projection material into two directions. According to the above-described embodiment, the flow dividing member 6 diverts the projection material to the right and left, and the first lateral screw 3a and the second lateral screw 3b can convey the projection material to the right and left while passing through the left and right first classification rollers 2a and the second classification. The drum 2b grades the projection material. As a result, the projection material can be separately transported to the right and left, and the classification can be performed according to the predetermined size. Therefore, it is not necessary to ensure a space (height) in which the two steps are separately performed, and the beating device 10 can be simplified.

Further, according to the above embodiment, by separating a part of the projection material in the circulation system to the separation line 8 and performing screening and sorting by the vibration screening machine 9, the projection material can be circulated and selected and classified according to a predetermined particle size standard. . In this way, the particle size of the projecting material can be limited to a certain range, and variation in particle size can be suppressed.

The specific examples of the present invention have been described in detail above, but these are merely examples and do not limit the scope of the patent application. The technology described in the patent application scope includes various modifications and changes of the specific examples described above. For example, in the above embodiment, the classifying drum 2 and the transverse screw 3 are horizontally arranged, but they may not be arranged strictly horizontally or may be inclined with respect to the horizontal.

Further, in the above embodiment, the cylindrical classification drum 2 is used as the classification member. However, the classification member is not limited to this configuration, and may be, for example, a plate shape. At this time, the plate-like classifying member (not shown) is disposed below the transverse screw 3, and has a plurality of through holes that allow only a projecting material having a predetermined size to pass, similarly to the classifying drum 2 described above. The projection material can also be classified by the classification member of the structure. Further, as the conveying device that conveys the projection material laterally, a conveyor belt having a loading surface on which the projection material is loaded may be used. At this time, by providing a plurality of through holes that allow only a projecting material smaller than a predetermined size to pass through the loading surface of the conveyor belt, the conveyor can be conveyed by the conveyor belt and the projecting material can be classified. Through this configuration, it is also possible to simultaneously perform lateral conveyance and classification of the projecting material.

Further, in the above embodiment, the projection impeller 4 that projects the projection material by the centrifugal force is used as the projection mechanism. However, the projection mechanism is not limited to this configuration, and may be configured to project the projection material by air pressure, for example.

Further, in the above-described embodiment, the separation line 8 is separated from the separation outlet 71 of the support member 7, but the separation position of the separation line 8 is not particularly limited as long as a part of the projection material can be separated from the circulation system of the projection material. Separate from any position.

Further, in the above embodiment, the classification drum 2 having the through hole 21 formed in the lower portion is used, but the configuration of the classification drum 2 is not limited thereto. As shown in Fig. 6, the classification drum 2 of another embodiment has a plurality of through holes 21 formed in the entire circumferential direction. A plurality of through holes 21 are formed substantially uniformly over the entire wall surface of the classifying drum 2. Further, the classification drum 2 is rotatable in the circumferential direction with the axial direction being the center of rotation. Further, a screw 24 is provided on the outer peripheral surface of the classifying drum 2. The screw 24 is formed in a spiral shape along the outer peripheral surface of the classifying drum 2, and extends in the lateral direction (the axial direction of the classifying drum 2). According to this configuration, the classification drum 2 is rotated when the projection material is conveyed laterally. At this time, the projecting material is classified by the passage holes 21 on the entire circumferential surface of the classifying drum 2. Further, by providing the screw 24 on the outer peripheral surface of the classifying drum 2, the classified projecting material can be conveyed laterally by the screw 24. In this way, the classification and transportation of the projecting material can be smoothly performed.

Further, as shown in Fig. 7, the transverse screw 3 disposed inside the classification drum 2 may be fixed to the classification drum 2. In the example shown in Fig. 7, the circumferential end of the transverse screw 3 is fixed to the wall surface of the classification drum 2. Further, the classifying drum 2 and the transverse screw 3 are configured to be simultaneously rotatable. root According to this configuration, when the classification drum 2 is rotated, the transverse screw 3 is also rotated together, and the classification and conveyance of the projection material can be performed. In addition, since the classifying drum 2 and the transverse screw 3 can be simultaneously rotated by a single power source, the efficiency is high.

1‧‧‧ bucket elevator

2‧‧‧Classification roller

2a‧‧‧1st class roller

2b‧‧‧2nd classification drum

3‧‧‧ transverse screw

3a‧‧‧1st transverse screw

3b‧‧‧2nd transverse screw

4‧‧‧Projecting impeller

4a‧‧‧1st projection impeller

4b‧‧‧2nd projection impeller

5‧‧‧ Guide line

5a‧‧‧1st guide line

5b‧‧‧2nd guide line

6‧‧‧Shunting components

7‧‧‧Support members

8‧‧‧Separation line

10‧‧‧Bearing device

11‧‧‧ Bucket

21‧‧‧through hole

22‧‧‧ Entrance

23‧‧‧Export

36‧‧‧1st projectile removal line

37‧‧‧ Foreign material removal line

38‧‧‧2nd projectile removal line

39‧‧‧ Branch board

41‧‧‧Projection room

60‧‧‧Projected material recycling department

71‧‧‧Separate exit

122a‧‧‧Transporting rotator

122b‧‧‧Transporting rotator

127‧‧‧Feed institutions

128a‧‧‧1st gear

128b‧‧‧1st gear

130a‧‧‧2nd gear

130b‧‧‧2nd gear

132a‧‧‧Chain

132b‧‧‧Chain

133‧‧‧Electric motor

136‧‧‧ vertical board

391‧‧‧through hole

411‧‧‧Processed material handling device

w‧‧‧Processed objects

Claims (7)

A beating device for classifying a projection material supplied by a projection material supply mechanism and projecting it to a workpiece by a projection mechanism, comprising: having a plurality of through holes that allow only a projection material smaller than a predetermined size to pass through a classifying member; a lateral conveying mechanism that laterally conveys the projecting material supplied to the classifying member by the projecting material supply mechanism; and the projecting material that is dropped to the lower side by the classifying member is guided to the projection The guiding line of the organization. The beating device according to the first aspect of the invention, further comprising: a foreign matter removing portion that is open to an end of the classifying member and that can collect foreign matter that does not pass through the through hole. The beating device according to claim 1, wherein the lateral conveying mechanism includes a screw that laterally conveys the projection material by rotation. The beating device according to the first aspect of the invention, further comprising: a first horizontal conveyance mechanism that conveys the projection material in the first lateral direction and a second lateral conveyance mechanism that conveys the second lateral direction; The above projection material supplied by the projection material supply mechanism is branched to the upper The first lateral conveyance mechanism and the flow dividing member of the second lateral conveyance mechanism are described. The beating device according to claim 1, wherein the projection material supply mechanism supplies the projected projection material to the lateral conveyance mechanism, thereby forming a circulation system of the projection material, and the bead breaking device further has: a separation line that separates a part of the projection material in the circulation system; and a vibration screening machine that selects and classifies the projection material separated by the separation line in accordance with a predetermined particle size standard. The beating device according to the first aspect of the invention, wherein the classifying member is formed in a rotatable cylindrical shape, and the plurality of through holes are formed in a plurality of circumferential directions of the classifying member, and the beating device further has A screw formed on the outer circumference of the classifying member. The beating device according to claim 1, further comprising: a projecting material clearing line branched from the foreign matter removing portion; and a branching portion provided on the projecting material clearing line, and having the projecting material passable A plurality of the above-mentioned graded plates passing through the holes.