JP7549870B2 - High-speed impact demolition equipment - Google Patents

Description

The present invention relates to recycling technology for electronic devices, etc., and in particular to technology for dismantling electronic devices, etc.

In recent years, the widespread use of mobile terminals such as mobile phones has created a problem with the disposal of these waste products. Mobile terminals use a large number of electronic components, which contain large amounts of precious metals such as gold, silver, and copper, and rare metals such as palladium, indium, and cobalt. One method of recovery involves crushing the waste products into powder and separating out the metals, which are then dissolved or melted to recover the metal ions or metals.

However, in order to reduce collection costs while increasing the collection rate, it is preferable to dismantle the products without crushing them and separate and collect specific parts such as batteries.

In mobile terminals, the liquid crystal display panel and the housing are fixed together with adhesive or screws. Methods for dismantling are known, such as inserting the tip of a spatula into the joint to separate it, or rotating the device in a rotating drum and dropping it repeatedly to apply impact force that loosens the fastening screws (see, for example, Patent Documents 1 and 2).

JP 2017-204514 A JP 2013-255901 A

In Patent Document 1, a spatula is inserted into the joints one by one to dismantle the car, while in Patent Document 2, impact forces are applied by repeatedly dropping the car inside a rotating drum, which creates the problem that it is difficult to shorten the dismantling time per car, i.e., to carry out high-speed dismantling processing.

The objective of the present invention is to solve the above-mentioned problems and provide a dismantling device capable of high-speed dismantling processing.

According to one aspect of the present invention, a dismantling device is provided that includes a holding section capable of placing an object in a predetermined position, a rotary impact means in which the base of a hammer body is fixed to a rotary shaft driven by a rotary drive means and a striking section is provided at the tip of the hammer body, and the hammer body rotates around the rotary shaft driven by the rotary drive means, and the striking section strikes a predetermined position on the main surface or side of the object held in the holding section, thereby dismantling the object.

According to the above aspect, the dismantling device dismantles an object placed in a predetermined position on the holding part by rotating the striking part of the hammer body, the base of which is fixed to the rotating shaft, to strike and knock out a predetermined position on the main surface or side of the object. In other words, the dismantling device can strike and dismantle objects with pinpoint accuracy. Furthermore, because the rotation speed of the rotating shaft can be adjusted, the time period of each strike can also be adjusted, making it possible to dismantle a large number of objects at high speed. Furthermore, by striking with pinpoint accuracy, it is possible to dismantle the built-in batteries and electronic circuit boards without damaging them.

1 is a plan view showing a schematic configuration of a dismantling device according to one embodiment. 1 is a side view showing a schematic configuration of a dismantling device according to one embodiment. 3A and 3B are diagrams showing the schematic configuration of a striking portion and a workpiece receiving portion. 2 is a schematic block diagram of a control unit and a sensor of the dismantling device according to one embodiment. FIG. 1 is an explanatory diagram (part 1) of the operation of the dismantling device according to one embodiment; FIG. FIG. 2 is an explanatory diagram (part 2) of the operation of the dismantling device according to the embodiment; FIG. 3 is an explanatory diagram (part 3) of the operation of the dismantling device according to one embodiment. FIG. 4 is an explanatory diagram (part 4) of the operation of the dismantling device according to one embodiment. FIG. 5 is an explanatory diagram (part 5) of the operation of the dismantling device according to one embodiment. 13A and 13B are diagrams showing schematic configurations of modified examples of the striking portion and the workpiece receiving portion.

The following describes the embodiment with reference to the drawings. Elements common to multiple drawings are given the same reference numerals, and detailed descriptions of those elements will not be repeated.

Figure 1 is a plan view showing the schematic configuration of a dismantling device according to one embodiment. Figure 2 is a side view showing the schematic configuration of a dismantling device according to one embodiment, where (a) shows the schematic configuration of a part of the rotary shaft drive unit of the dismantling chamber and the drive chamber, and (b) is a side view showing the schematic configuration of the rotational bias unit of the drive chamber. Some parts are omitted for ease of illustration. The components do not have the relative sizes shown in the drawings.

1 and 2, the dismantling device 10 includes a dismantling chamber 13 in which a workpiece 11, which is an object to be dismantled, is struck by a hammer 12 to dismantle it, and a drive chamber 14 for rotating and driving the hammer 12. The dismantling chamber 13 and the drive chamber 14 are preferably provided on respective racks and fixed to the floor surface by anchor bolts or the like. The vibration of the electric motor in the drive chamber 14 is less likely to adversely affect the dismantling chamber 13. The workpiece 11 is assumed to be a mobile terminal such as a feature phone, smartphone, or tablet, but may also be an electronic device having a structure in which a lid portion and a main body portion face each other, for example, an electronic device having a rectangular parallelepiped shape in which a display portion or an operation portion and a main body portion are joined or fastened, a box-shaped electronic device in which a lid portion and a housing are joined or fastened, or an electronic device in which a housing and a main body portion are composed of multiple members. In this embodiment, the workpiece 11 will be described using a mobile terminal having a display portion and a housing as an example.

The dismantling chamber 13 includes a belt conveyor 15 that supplies the workpiece 11 and moves in the direction of the arrow, a workpiece receiving section 16 that receives the workpiece 11 from the belt conveyor 15 at a transfer position and moves to a striking position while holding the workpiece 11, a rotating shaft 18 to which the base of the hammer 12 is fixed, a strike plate 19 against which the workpiece 11 struck by the striking section 17 of the hammer 12 is knocked into the air and struck, and a belt conveyor 20 that receives the workpiece 11 that has fallen from the strike plate 19 and moves in the direction of the arrow to discharge it. An actuator 27 moves the workpiece receiving section 16 between the transfer position and the striking position. The actuator 27 can operate its drive shaft 27a by a pulse motor, a cam, or the like (neither of which are shown).

The drive chamber 14 includes a rotation drive unit 21 that rotates the rotating shaft 18 to a predetermined rotation position, and a rotation biasing unit 22 that rotates the rotating shaft 18 at high speed by biasing force. The rotation drive unit 21 rotates the rotating shaft 18 by an electric motor 23. Specifically, the rotation drive unit 21 includes a gear 25 that transmits the rotation of the electric motor 23 and rotates the pulley 24, a pulley 26 that is coaxial with the rotating shaft 18 and can rotate independently, a belt 28 suspended between the pulleys 24 and 26, a cantilever pin 29 that is provided so as to protrude from the rotation surface of the pulley 26 and rotates together with the pulley 26, and a receiving member 30 that is fixed to the rotating shaft 18 and is pressed against the cantilever pin 29 to rotate the rotating shaft 18. The rotating shaft 18 is configured to be rotatable only clockwise in FIG. 2(a) and not counterclockwise.

The rotational biasing unit 22 includes a tension spring 31. One end of the tension spring 31 is fixed to a bracket 33 via a spring receiving member 32, and the other end is connected to a position away from the axis of a pulley 35 fixed to the rotating shaft 18 via a spring receiving member 34 using a rod end bearing 36. The rotating shaft 18, the pulley 35, and the rod end bearing 36 form a crank. The rotating shaft 18, the hammer 12, the receiving member 30, and the pulley 35 of the rotational biasing unit 22 are integrated. The bracket 33 may be provided with a bolt 33a for adjusting the initial tension length of the tension spring 31, or the number of tension springs 31 may be changed. This allows the impact speed of the hammer 12 to be adjusted by adjusting the tension energy stored in the tension spring 31 during extension.

With this configuration, the rotary drive unit 21 transmits the rotary drive force of the electric motor 23 to the pulley 26 via the belt 28 to rotate the cantilever pin 29, thereby rotating the rotary shaft 18 via the receiving member 30 pressed against the cantilever pin 29. The rotation of the rotary shaft 18 extends the tension spring 31 via the rotation of the pulley 35 of the rotation biasing unit 22. When the tension spring 31 passes the most extended position (top dead center), it contracts forcefully and rotates the rotary shaft 18 via the pulley 35. This causes the hammer 12 to rotate at high speed, and the striking part 17 at its tip strikes the workpiece 11. The rotation period of the hammer 12 can also be determined by the rotation speed of the electric motor 23, and the rotation period of the hammer 12 can be set to, for example, 1 revolution per second.

Figure 3 is a diagram showing the schematic configuration of the striking part and the workpiece receiving part, and shows the positional relationship during striking. Figure 3 (a) is a front view seen from the striking direction, (b) is a plan view, and (c) is a side view. Referring to Figures 3 (a) to (c) together with Figures 1 and 2, the hammer 12 has one end of the arm 12a fixed to the rotating shaft 18, and the other end is provided with a striking part 17 that strikes the workpiece 11. The striking part 17 has a base 17a and two rod-shaped striking members 17b that are fixed to the base 17a and separated by a gap D1 in a direction perpendicular to the rotation trajectory plane of the striking part 17, and extend in the radial direction of the rotation trajectory plane.

The work receiving portion 16 is made up of work receiving members 16a and 16b, each of which is made of a plate-like member, and forms an L-shape when viewed from the side (Figure 3(c)). The work receiving members 16a and 16b hold the main surface 11a and side surface 11b of the work 11.

The length L1 of the workpiece receiving members 16a, 16b in the direction perpendicular to the rotation trajectory plane of the striking portion 17 is smaller than the gap D1 between the two rod-shaped striking members 17b of the striking portion 17 (L1<D1), and the gap D1 is smaller than the length WL of the long side 11c of the workpiece 11 (D1<WL). This allows the two rod-shaped striking members 17b to strike the workpiece 11 without coming into contact with the workpiece receiving portion 16.

The workpiece 11 is placed on the workpiece receiving portion 16 so that the long side 11c of the workpiece 11 is perpendicular to the rotation trajectory plane of the hammer 12. By placing the workpiece 11 in this position, the two rod-shaped striking members 17b can reliably strike the vicinity of both ends of the long side 11c of the main surface 11a of the workpiece 11 along the short side 11d, knocking the workpiece 11 into the air.

The two rod-shaped striking members 17b may be round or square bars, but are not particularly limited. As shown in FIG. 3(c), it is preferable that the cross-sectional shape of the rod-shaped striking members 17b perpendicular to the longitudinal direction is gradually tapered on both sides toward the workpiece 11. This allows the workpieces 11 to reliably strike the vicinity of both ends of the long side 11c of the workpiece 11, even if the long sides 11c of the workpieces 11 have different lengths.

Figure 4 is a schematic block diagram of the control unit and sensors of a dismantling device according to one embodiment. The dismantling device 10 has a work detection sensor 41 that detects that the work 11 is placed on the work receiving portion 16, and a hammer position detection sensor 42 that detects that the hammer 12 has reached the strike standby position. Each sensor 41, 42 is electrically connected to a control unit 43. The control unit 43 starts and stops the operation of the supply belt conveyor 15 in response to the sensor detecting the work 11. When the sensor 42 detects that the hammer 12 has reached the strike standby position, the control unit 43 controls the start/stop of rotation of the electric motor 23.

Figures 5A to 5E are explanatory diagrams of the operation of the dismantling device according to one embodiment, with (a) being a side view showing the schematic configuration of a portion of the rotary shaft drive section of the dismantling chamber and the drive chamber, and (b) being a side view showing the schematic configuration of the rotation biasing section of the drive chamber. Below, the operation of the dismantling device 10 from supplying, dismantling, and discharging the workpiece 11 will be described in order with reference to Figures 5A to 5E, 1, 2, and 4.

Figure 5A is a diagram showing the arrangement of each element of the dismantling device 10 when the workpiece 11 is placed on the workpiece receiving part 16. In the dismantling chamber 13, the workpiece receiving part 16 waits at the transfer position of the workpiece 11. A robot (not shown) places the workpiece 11 on the belt conveyor 15. The workpiece 11 is transported by the belt conveyor 15, and the workpiece 11 is placed on the workpiece receiving part 16. When the sensor 41 detects that the workpiece 11 is present on the workpiece receiving part 16, the control part 43 stops the belt conveyor 15 and causes the next workpiece 11 to wait.

In the drive chamber 14, the pulley 26 rotates when the rotational power of the electric motor 23 of the rotary drive unit 21 is transmitted via the gear 25, pulley 24, and belt 28. The rotation of the pulley 26 causes the cantilever pin 29 to press against the receiving member 30, causing the rotary shaft 18 to rotate. As a result, the hammer 12 begins to rotate, and the rotation of the pulley 35 of the rotary bias unit 22 causes the tension spring 31 to gradually expand from its most contracted position.

Figure 5B is a diagram showing the arrangement of each element of the dismantling device 10 when the hammer 12 reaches the striking standby position. The workpiece receiving part 16 is moved by the actuator 27 from the workpiece 11 delivery position to the striking position with the workpiece 11 still loaded thereon.

The electric motor 23 continues to rotate, which rotates the hammer 12 and stretches the tension spring 31. When a sensor 42 installed on a wall surface (not shown) of the dismantling chamber 13 detects the hammer 12, the control unit 43 stops the electric motor 23 or stops the rotation of the rotating shaft 18 by using a brake (not shown), thereby stopping the hammer 12. At this time, the tension spring 31 stops at a position just before top dead center TDP, where it is maximally stretched. The tension spring 31 is in a state where the maximum amount of tensile energy is stored.

Figure 5C is a diagram showing the arrangement of each element of the dismantling device 10 just before the striking unit 17 strikes the workpiece 11. In the arrangement of Figure 5B, when the sensor 41 installed on the workpiece receiving unit 16 detects that the workpiece 11 is on the workpiece receiving unit 16 and the sensor 42 detects the hammer 12, the control unit 43 determines that the striking preparation is complete and starts the rotation of the electric motor 23. As a result, the pulley 35 rotates in response to the rotation of the rotating shaft 18, the rotational biasing unit 22 passes the top dead center, and the tension spring 31 contracts rapidly. As a result, the rotating shaft 18 connected to the pulley 35 rotates at high speed, and the hammer 12 rotates at high speed. The striking unit 17 strikes the workpiece 11 placed on the workpiece receiving unit 16 at high speed. At this time, the striking unit 17 does not come into contact with the workpiece receiving unit 16, and the two rod-shaped striking members 17b strike both ends of the long side of the workpiece 11.

Figure 5D is a diagram showing the arrangement of each element of the dismantling device 10 immediately after the striking unit 17 strikes the workpiece 11. The workpiece 11, knocked out by the striking unit 17, flies out and strikes the struck member 19. Due to the impact of this collision and the strike by the striking unit 17 in Figure 5C, the workpiece 11 is separated into the housing, display unit, battery, circuit board, etc. and dismantled. The tension spring 31 contracts to its most contracted position. The electric motor 23 continues to rotate.

Figure 5E is a diagram showing the arrangement of each element of the dismantling device 10 when dismantled workpieces 11e and 11f are discharged and the next workpiece 11 is supplied. The workpiece 11 is dismantled and dropped onto the belt conveyor 20 for discharge. The dismantled workpiece 11 is usually dismantled into a housing, a display unit, a battery, and a circuit board. For convenience of illustration, these are omitted, and only the display unit 11e and the housing 11f are shown. The dismantled display unit 11e, housing 11f, etc. are discharged from the dismantling chamber 13 by the belt conveyor 20 and transferred to the next process, for example, a crushing chamber (not shown). In addition, the workpiece receiving unit 16 moves to the transfer position of the workpiece 11 and waits. The next workpiece 11 is supplied by the belt conveyor 15 and placed on the workpiece receiving unit 16. The rotational biasing unit 22 stops at the position where the tension spring 31 is most contracted (bottom dead center BDP), the pulley 35 and the rotating shaft 18 stop, and the hammer 12 also stops. After this, the electric motor 23 continues to rotate, and the pulley 26 rotates, causing the cantilever pin 29 to rotate and begin to press against the receiving member 30, causing the rotating shaft 18 to begin to rotate and the hammer 12 to begin to rotate. Returning to the arrangement of the elements of the dismantling device shown in Figure 5A. By repeating the operations described in Figures 5A to 5E, the workpiece 11 can be struck at a specific position and dismantled reliably at high speed.

Figure 6 is a diagram showing the schematic configuration of a modified example of the striking portion and the workpiece receiving portion, and shows the positional relationship during striking. Figure 6 (a) is a front view seen from the striking direction, (b) is a plan view, and (c) is a side view. Referring to Figures 6 (a) to (c), the hammer 12 has one end of the arm 12a fixed to the rotating shaft 18, and the other end is provided with a striking portion 117 that strikes the workpiece 11. The striking portion 117 is a plate-like member having a main surface perpendicular to the plane of its rotation trajectory, and is capable of striking the center of the side of the workpiece 11.

The work receiving portion 116 is formed of two pairs of work receiving members 116b, 116c and a work receiving member 116a that supports them. When viewed from the side (FIG. 6(c)), the work receiving members 116b, 116c form an L-shape. The two L-shaped work receiving members 116b, 116c are separated by a gap D2 in a direction perpendicular to the rotation trajectory plane of the striking portion 117. The work receiving members 116b, 116c may be round or square bars, and are not particularly limited. The gap D2 is set to be smaller than the length of the short side WS of the work 11. In the work receiving portion 116, the two pairs of work receiving members 116b, 116c hold the main surface 11a and the end portion of the side surface 11b of the work 11. The striking part 117 has a length L2 perpendicular to the rotation trajectory plane, and the gap D2 of the work receiving member 116b is formed to be larger than the length L2 (i.e., D2 > L2). This allows the striking part 117 to strike the work 11 without coming into contact with the work receiving part 116.

According to this embodiment, the dismantling device 10 dismantles the workpiece 11 placed in a predetermined position on the workpiece receiving part 16 by rotating the striking part 17, 117 of the hammer 12, the base of which is fixed to the rotating shaft 18, striking a predetermined position of the workpiece 11 and knocking it out. In other words, the dismantling device 10 can strike the workpiece 11 with pinpoint accuracy. This allows the workpiece 11 to be dismantled without damaging the built-in battery or electronic circuit board. In addition, the tension spring 31 is stretched by the rotation of the electric motor 23 to accumulate tensile energy, and the tensile energy is released at the timing of the strike to rapidly rotate the hammer 12, thereby striking the workpiece 11 at high speed. The striking part 17, 117 is configured not to come into contact with the workpiece receiving part 16 on which the workpiece 11 is placed when striking, so that the kinetic energy of the striking part 17, 117 can be used as a striking force (impact force) without waste. Furthermore, the striking cycle of the hammer 12 can be adjusted by the rotation speed of the electric motor 23, the gear 25, etc., making it possible to dismantle one vehicle per second with one strike per second.

It is preferable that the display unit and the housing are released from their fastened or joined state when the workpiece 11 is supplied to the supply belt conveyor 15, in order to facilitate dismantling by the dismantling device 10.

The dismantling device 10 is preferably provided with a release section, which releases the fastened or joined state between the body and lid of the workpiece 11, at the front stage of the supply belt conveyor 15. Illustrations are omitted below. The release section includes a positioning mechanism that positions the workpiece 11 so that it is in a predetermined posture, and a cutting mechanism that cuts each side of the positioned workpiece 11 from its end at a predetermined position sufficient to release the fastened or joined state. The predetermined position is preferably a position that allows safe cutting and does not interfere with batteries such as lithium batteries inside the workpiece.

[Example]
As a dismantling device of the embodiment, two springs with a spring constant of 30 N/mm were used as the tension springs 31 of the dismantling device 10 of the above embodiment, and the initial tension was set to 410 N. Using the striking part 17 shown in FIG. 3, the length of the hammer 12 from the center of the rotation axis 18 to the striking point by the striking part 17 was set to 355 mm. The weight of the striking part 17 was set to 40 g. As a result of analysis using a high-speed camera, the speed of the striking part 17 of the hammer 12 at the time of striking was 20.0 m/sec.

A total of 20 workpieces were cut from smartphones (Apple iPhone 4, 4S, 5, 5S, 6; SHARP 203SH; TCL ALCATEL one touch IDOL2; HTC J One HTL22) at positions 2-3 mm from the ends of both long sides. When impacts were applied along the ends of both short sides of the workpieces using the dismantling device of this embodiment, all 20 workpieces could be dismantled without damaging the internal batteries. In other words, the dismantling success rate was 100%.

[Reference Example]
As a reference example dismantling device, an experiment was conducted to dismantle a smartphone using a cross-flow shredder (Sato Iron Works, Inc., housing destruction test device, dismantler (12B-4)) that crushes objects by striking them with the rotation of a chain. The reference example dismantling device is a cross-flow shredder having a crushing chamber with inner dimensions (diameter 496 mm, height 250 mm), and a discharge section with no lid measuring 250 mm wide and 190 mm high is provided on the side of the crushing chamber, so that smartphones fed in by the chain are struck once or twice and discharged, and are not over-crushed. The smartphones used were those cut 2 to 3 mm from both ends of the side. When 44 smartphones were dismantled using the reference example dismantling device, 19 (43%) were dismantled without damage to the internal battery (i.e., dismantling was successful), and the remaining smartphones had damaged batteries or the batteries were not separated from the housing (i.e., dismantling failed).

The above results show that the success rate of dismantling in the embodiment was more than twice that of the reference example, and all of the items were successfully dismantled, making the dismantling device in the embodiment far superior to conventional dismantling devices.

Although the preferred embodiment of the present invention has been described above in detail, the present invention is not limited to the specific embodiment, and various modifications and alterations are possible within the scope of the present invention as described in the claims. In the embodiment, one rotating shaft 18 is provided from the drive chamber 14 to the dismantling chamber 13, but a rotating shaft may be provided in each chamber and connected by a joint or the like. Furthermore, for example, the dismantling device of the present invention can be applied to digital devices such as digital cameras, video cameras, and laptop computers in addition to the above-mentioned workpiece 11 as the object of dismantling. The dismantling device of the present invention can be incorporated into a recycling plant and used for automatic dismantling of discarded products such as mobile terminals.

10 Dismantling device 11 Workpiece 12 Hammer 13 Dismantling chamber 14 Drive chamber 16 Workpiece receiving portion 17 Striking portion 18 Rotating shaft 21 Rotational driving portion 22 Rotational biasing portion 23 Electric motor 31 Tension spring

Claims (10)

A holder capable of placing an object in a predetermined position;
a rotary impact means having a base portion of a hammer body fixed to a rotary shaft driven by a rotary drive means and a striking portion provided at a tip portion of the hammer body, the rotary drive means having a rotary drive source capable of rotating the rotary shaft and a biasing member for biasing the rotary shaft in a rotational direction;
the hammer body rotates around the rotation axis driven by the rotation drive means, and the striking part strikes a predetermined position on a main surface or a side surface of the object held by the holding part to dismantle the object;
A dismantling device in which the rotation speed of the rotating shaft is increased by the biasing force of the biasing member, thereby increasing the speed of the striking part of the hammer body and striking the object . A holder capable of placing an object in a predetermined position;
a rotary impact means having a base portion of a hammer body fixed to a rotary shaft driven by a rotary drive means and a striking portion provided at a tip portion of the hammer body;
the hammer body rotates around the rotation axis driven by the rotation drive means, and the striking part strikes a predetermined position on a main surface or a side surface of the object held by the holding part to dismantle the object;
a supply means for supplying the object to the holding portion,
the holding unit is moved to a first position where the object is delivered from the supplying means and the striking unit is moved to a second position where the striking unit strikes the object placed on the holding unit;
A dismantling device that causes the striking part to strike the object in response to completion of movement of the holding part to the second position . A holder capable of placing an object in a predetermined position;
a rotary impact means having a base portion of a hammer body fixed to a rotary shaft driven by a rotary drive means and a striking portion provided at a tip portion of the hammer body;
the hammer body rotates around the rotation axis driven by the rotation drive means, and the striking part strikes a predetermined position on a main surface or a side surface of the object held by the holding part to dismantle the object;
The object has a structure in which a main body and a lid face each other, and further includes a release means for releasing a fastened state between the main body and the lid,
The object is placed on the holding section in a released state by the release means . The dismantling device according to any one of claims 1 to 3, wherein the striking portion is configured not to come into contact with the holding portion when striking the object. A holder capable of placing an object in a predetermined position;
a rotary impact means having a base portion of a hammer body fixed to a rotary shaft driven by a rotary drive means and a striking portion provided at a tip portion of the hammer body;
the hammer body rotates around the rotation axis driven by the rotation drive means, and the striking part strikes a predetermined position on a main surface or a side surface of the object held by the holding part to dismantle the object;
A dismantling device in which the striking section has two rod-shaped striking members that are spaced apart by a first predetermined gap in a first direction perpendicular to the rotational locus plane of the striking section and extend radially of the rotational locus plane of the striking section, and each of the two rod-shaped striking members is capable of striking both ends of the object. The dismantling device of claim 5, wherein the length of the holding portion in a first direction perpendicular to the rotation trajectory plane of the striking portion is smaller than the first predetermined gap between the two rod-shaped striking members of the striking portion, and is smaller than the length of the object in the first direction when it is placed in the predetermined posture. the object is placed on the holder so that its longitudinal direction is in the first direction;
The dismantling device according to claim 5 or 6, wherein the two rod-shaped striking members strike both ends of the object in a longitudinal direction. A holder capable of placing an object in a predetermined position;
a rotary impact means having a base portion of a hammer body fixed to a rotary shaft driven by a rotary drive means and a striking portion provided at a tip portion of the hammer body;
the hammer body rotates around the rotation axis driven by the rotation drive means, and the striking part strikes a predetermined position on a main surface or a side surface of the object held by the holding part to dismantle the object;
The striking section has a plate-shaped striking member capable of striking a center portion of the object,
the holding portion has two rod-shaped holding members spaced apart at a second predetermined gap in a first direction perpendicular to a rotation trajectory plane of the striking portion,
A dismantling device, wherein the second predetermined gap is greater than the length of the plate-shaped striking member of the striking section in the first direction. The dismantling device according to any one of claims 1 to 8, further comprising a collision receiving member against which the object collides in a direction in which the object struck by the striking portion flies. The dismantling device according to any one of claims 1 to 9, wherein the object is a mobile terminal.

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