Separating device and separating method for die-casting products

Abstract

The invention provides a die-cast product separating device, which can reliably separate a product part from a die-cast product in a short time without damaging the product part, and can cope with die-cast products of various shapes. The separation device of the die-cast product applies vibration to the die-cast product comprising a product part and a hot runner part connected with the product part, so that the product part is separated from the die-cast product. The separating device comprises a supporting part for supporting a hot runner part of the die casting product; an air hammer that causes a chisel provided at the tip to generate striking vibration; and a movement mechanism that moves the air hammer between a retracted position and a contact position, when the air hammer is located at the contact position, the chisel comes into contact with the hot runner part of the die-cast product supported by the support part, and the chisel of the air hammer comes into contact with the hot runner part to apply striking vibration to the hot runner part.

Description

Technical Field

[0001] The invention relates to a separation device for die-cast products and a separation method for die-cast products. Background Art

[0002] As devices for separating a product portion from a die-cast product taken out from a forming mold, for example, a vibration separator for applying vibration to the die-cast product to separate the product portion (Patent Document 1), an ultrasonic die-casting separator for applying ultrasound to the die-cast product to separate the product portion (Patent Document 2), and a weir breaking device for removing a weir portion that is an unnecessary portion by striking a separation tool against the product portion of the die-cast product (Patent Document 3), etc. are known.

[0003] In the vibration separator of Patent Document 1, an electric motor is used to rotate the eccentric shaft of the vibrator holding the die-cast product, so that the vibrator vibrates around the fulcrum eccentric shaft. The product portion is separated from the die-cast product by this vibration. In the ultrasonic die-casting separator of Patent Document 2, the ultrasonic horn is vibrated by pressing the runner portion and the overflow portion of the die-casting molded product to the receiving portion, thereby separating the product portion. In the weir breaking device of Patent Document 3, the product portion supported by the clamping portion is pressed downward by the strong thrust from the self-pressurized air hammer, thereby breaking the weir portion.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Publication No. 2008-302394

[0007] Patent Document 2: China Utility Model Announcement No. 206952145

[0008] Patent Document 3: Japanese Patent Application Publication No. 2010-167482 Summary of the invention

[0009] However, in the vibration separator of Patent Document 1, since the die-cast product is supported on the vibrator in an unpositioned manner, there is a possibility that it is difficult to apply vibration to the die-cast product and the product parts cannot be separated. The equipment price of the ultrasonic separator of Patent Document 2 is relatively high. In addition, there is a case where the durability of the horn or vibrator to high-speed micro-vibration is insufficient under severe conditions of use. In addition, in the type of using the separation tool to hit the product part of the die-cast product of Patent Document 3, it may cause marks or damage to the surface of the product part, and sometimes the product may be deformed when the product is thin. In addition, since the breaking and removal process is carried out in stages, there is a disadvantage of a longer production cycle.

[0010] Therefore, the object of the present invention is to provide a separation device and a separation method for die-cast products, which will not cause damage to the product part, can reliably and quickly separate the product part from the die-cast product, and can also handle die-cast products of various shapes.

[0011] The present invention includes the following structures.

[0012] (1) A device for separating a die-cast product, which applies vibration to a die-cast product including a product portion and a hot runner portion connected to the product portion, so that the product portion is separated from the die-cast product, wherein the device for separating a die-cast product is characterized in that it comprises:

[0013] a supporting portion, which supports the hot runner portion of the die-cast product;

[0014] an air hammer that causes a chisel provided at a top end portion to generate striking vibration; and

[0015] a moving mechanism that moves the air hammer between a retreat position and a contact position, wherein when the air hammer is located at the contact position, the chisel contacts the hot runner portion of the die-cast product supported by the support portion,

[0016] The chisel of the air hammer is brought into contact with the hot runner portion to apply the striking vibration to the hot runner portion.

[0017] (2) A method for separating a die-cast product, wherein vibration is applied to a die-cast product comprising a product portion and a hot runner portion connected to the product portion, so that the product portion is separated from the die-cast product, wherein the method for separating a die-cast product is characterized by comprising:

[0018] The step of supporting the hot runner portion of the die-cast product on a supporting portion;

[0019] a step of causing an air hammer that generates striking vibration in a chisel provided at a tip portion to move to a position where the chisel contacts the hot runner portion of the die-cast product supported by the support portion; and

[0020] A step of generating striking vibration from the air hammer and applying the striking vibration to the hot runner portion.

[0021] Effects of the Invention

[0022] According to the present invention, the product portion can be separated from the die-cast product reliably and in a short time without damaging the product portion, and it is also possible to cope with die-cast products of various shapes. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of a separation device for die-cast products.

[0024] Figure 2 This is a perspective view showing an example of a die-cast product.

[0025] Figure 3 It means to make Figure 1 The operation explanation diagram of the separation device shown in the figure shows the air hammer rising.

[0026] Figure 4 This is an enlarged perspective view of the support portion for mounting the die-cast product.

[0027] Figure 5 It is along Figure 4 A cross-sectional view of the support portion and the die-cast product taken along line VV is shown.

[0028] Figure 6 It is along Figure 4 A cross-sectional view of the support portion taken along line VI-VI is shown.

[0029] Figure 7 This is a flowchart showing the steps of a method for separating a die-cast product.

[0030] Figure 8 is from Figure 4 A side view of a support portion viewed in the V1 direction and a die-cast product supported by the support portion.

[0031] Fig. 9 It means to make the chisel Figure 8 An explanatory diagram showing a state in which the runner portion of a die-cast product is in contact.

[0032] Fig.10 So Fig. 9 The partial cross-section shows an enlarged view of portion P.

[0033] Fig.11 is a schematic representation of the Fig. 9 A schematic cross-sectional view of a die-cast product taken along line XI-XI is shown.

[0034] Fig.12 This is an explanatory diagram showing a state in which a product portion is separated from a runner portion.

[0035] Description of Reference Numerals

[0036] 11 Die casting products

[0037] 11a Product Department

[0038] 11b Hot runner unit

[0039] 13 Sprue

[0040] 15. Runner

[0041] 15a The first horizontal runner

[0042] 15b Second runner

[0043] 17 Overflow

[0044] 19 Weir

[0045] 21 Supporting part

[0046] 23A air hammer (No. 1 air hammer)

[0047] 23B air hammer (second air hammer)

[0048] 25 Base

[0049] 27 Framework

[0050] 29 Top Plate

[0051] 31A, 31B hammer holding portion

[0052] 33 Movable Plate

[0053] 35 Plate support shaft

[0054] 35a Spring

[0055] 35b Main body

[0056] 37 Cylinder (drive unit)

[0057] 39 Piston rod

[0058] 41 Anti-vibration rubber

[0059] 43 Base Plate

[0060] 45 Drive Cylinder

[0061] 47 Chisel

[0062] 51 Undertaking Department

[0063] 51a, 51b Spring receiving holes

[0064] 51c, 51d through holes

[0065] 51e, 51f countersinking

[0066] 53 base

[0067] 53a, 53b Spring receiving holes

[0068] 53c, 53d internal threaded hole

[0069] 55A, 55B coil spring (elastic component)

[0070] 57 snap-fit ​​part

[0071] 57a convex part

[0072] 57b recess

[0073] 58 snap-fit ​​part

[0074] 58a recess

[0075] 58b convex part

[0076] 59 Guide screw (limiting part)

[0077] 59a Head

[0078] 59b Shaft

[0079] 100 Separation device (separation device for die-cast products) DETAILED DESCRIPTION

[0080] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0081] Figure 1 It is a schematic structural diagram of a separation device 100 for die-cast products. Figure 2 It is a perspective view showing an example of the die-cast product 11 . Figure 1 The device for separating the die-cast product 11 (hereinafter referred to as a separating device) 100 shown applies vibration to the die-cast product 11 including the product portion 11 a to separate the product portion 11 a from the die-cast product 11 .

[0082] like Figure 2 As shown, the die-cast product 11 includes: at least one (in Figure 2 The hot runner portion 11b includes a sprue 13, a runner 15, an overflow portion 17, and a weir 19 (see the following). Fig.11 ) and other parts other than the product part 11a. The weir part 19 is the part with the smallest cross-sectional area among the parts constituting the hot runner part 11b. The die-cast product is manufactured by injecting a molten metal into a mold. As a metal, for example, zinc alloy, aluminum alloy, magnesium alloy, etc. can be cited as an example.

[0083] Figure 2 The runner section 15 shown includes a pair of first runners 15a and second runners 15b extending on both sides of the sprue section 13. A pair of product sections 11a are provided in the first runner 15a with a weir section 19 interposed therebetween. Figure 2The product portion provided in the second runner 15b is omitted. The die-cast product 11 used in the separation device 100 may be a structure in which one or more product portions 11a are provided in all runners connected to the sprue portion 13, or may be a structure in which one or more product portions 11a are provided in only a part of the runners, and the shape thereof is not limited.

[0084] Figure 1 The separating device 100 shown includes: a support portion 21 that supports the sprue portion 13 of the die-cast product 11; air hammers 23A and 23B that generate striking vibrations; and a moving mechanism described later for moving the air hammers 23A and 23B. In addition, a control unit (not shown) is connected to the separating device 100, and the control unit controls each unit of the separating device 100 to perform the separating operation of the product portion 11a.

[0085] In more detail, a plurality of frames 27 are erected on the base 25 of the separation device 100, and a top plate 29 is provided on the upper part of the plurality of erected frames 27. A movable plate 33 is arranged between the top plate 29 and the base 25. Hammer holding portions 31A and 31B for holding air hammers 23A and 23B are fixed to the movable plate 33, respectively. The movable plate 33 is supported on the top plate 29 by a plurality of plate support shafts 35. The plate support shaft 35 is provided with a spring 35a at one end on the movable plate 33 side, and a main body portion 35b coaxially arranged with the spring 35a is provided at the other end on the top plate 29 side. The spring 35a applies force to the movable plate 33 in the axial direction (up and down direction), thereby absorbing the vibration of the movable plate 33. The movable plate 33 is driven to rise and fall by the advance and retreat action of the piston rod 39 of the cylinder 37 fixed to the top plate 29.

[0086] Moreover, the bottom plate 43 to which the support part 21 is fixed is arrange|positioned above the base 25. This bottom plate 43 is supported by the base 25 via the some vibration-proof rubber 41.

[0087] The hammer holding parts 31A and 31B fixed to the movable plate 33 have a tilting mechanism (not shown) that supports the air hammers 23A and 23B in such a manner that the axial direction of the air hammers 23A and 23B can be tilted, and the air hammers 23A and 23B are lifted and lowered integrally with the movable plate 33. As the tilting mechanism, for example, there is a mechanism such as the following: the air hammers 23A and 23B are fixed to the movable part using a rotating table having a movable part that can be tilted by an actuator or a gear mechanism, which is supported on the movable plate 33, and the air hammers 23A and 23B are tiltably supported. The spring 35a and the vibration-proof rubber 41 of the plate support shaft 35 described above also function as a vibration buffering mechanism that absorbs the striking vibration of the air hammers 23A and 23B.

[0088] The air hammers 23A and 23B are connected to an air compressor (not shown), and use compressed air as a power to reciprocate a piston (not shown) in a drive cylinder 45, thereby causing a chisel (chisel) 47 mounted on the top of the piston to generate striking vibrations for continuous striking. The air hammers 23A and 23B can cause the chisel 47 to vibrate with an amplitude at a speed of, for example, 100 times / second.

[0089] Figure 3 It means to make Figure 1 The operation diagram of the separation device 100 in the state where the air hammers 23A and 23B are raised is shown in FIG. The air cylinder 37 is driven to raise the piston rod 39, thereby raising the movable plate 33. As a result, the air hammers 23A and 23B are raised together with the hammer holders 31A and 31B fixed to the movable plate 33, and the chisel 47 moves upward. That is, the air cylinder 37, the piston rod 39, the movable plate 33, and the hammer holders 31A and 31B act as a plurality of air hammers 23A and 23B. Figure 1 The chisel 47 shown in the figure is moved between a contact position where it contacts the die-cast product 11 supported by the support part 21 and a retreat position where it retreats from the contact position. In this case, the moving mechanism, the cylinder 37 serves as a driving part, and can move the air hammers 23A and 23B in a direction close to or away from the support part 21. In addition, the lifting and lowering movement of the air hammers 23A and 23B is limited to a predetermined range, and the lower limit position is set to the height position where the movable plate 33 touches a stopper (not shown). The above-mentioned moving mechanism is only an example, and other structures may also be used.

[0090] Figure 4 It is an enlarged perspective view of the support portion 21 on which the die-cast product 11 is mounted. Figure 5 It is along Figure 4 The support portion 21 and the die-cast product 11 are shown in cross-sectional view along line VV. Figure 6 It is along Figure 4 A cross-sectional view of the support portion 21 taken along line VI-VI is shown.

[0091] like Figure 4 As shown, the support portion 21 includes: a receiving portion 51; a base 53, which is fixed to the bottom plate 43 and arranged opposite to the receiving portion 51; and a pair of coil springs 55A and 55B, which are arranged between the receiving portion 51 and the base 53. Figure 5 As shown, the coil springs 55A and 55B are elastic members that urge the receiving portion 51 in a direction away from the base 53 (toward upward). The coil springs 55A and 55B support the receiving portion 51 to which the impact vibration from the air hammers 23A and 23B is transmitted in a vibration-free manner, and function as a vibration support mechanism that efficiently transmits the impact vibration to the die-cast product 11.

[0092] The receiving portion 51 is provided with spring receiving holes 51a and 51b for holding the upper ends of the coil springs 55A and 55B. The base 53 is also provided with a spring receiving hole 53a and a spring receiving hole 53b at positions corresponding to the spring receiving hole 51a and the spring receiving hole 51b, respectively. The upper end of the coil spring 55A is inserted into the spring receiving hole 51a, and the lower end is inserted into the spring receiving hole 53a, and the coil spring 55A is received in the spring receiving holes 51a and 53a in a state of being compressed from top to bottom. Similarly, the coil spring 55B is received in the spring receiving holes 51b and 53b in a compressed state.

[0093] In addition, a pair of through holes 51c and 51d are formed in the receiving portion 51. Countersunk holes 51e and 51f having bottom surfaces are formed in the upper part (opposite side of the base 53) of each through hole 51c and 51d. On the other hand, internal threaded holes 53c and 53d having internal threads on the inner circumferential surface are formed in the base 53 at positions corresponding to each through hole 51c and 51d. Moreover, a guide screw 59 is inserted into the through hole 51c and the internal threaded hole 53c corresponding to each other in position. The guide screw 59 includes a head 59a and a shaft 59b, and an external thread is formed in the shaft 59b. The shaft 59b of the guide screw 59 inserted into the through hole 51c of the receiving portion 51 is threadedly fixed in the internal threaded hole 53c of the base 53. Similarly, the guide screw 59 inserted into the through hole 51 d has its shaft portion 59 b screwed into the internal thread hole 53 d of the base 53 .

[0094] The base 53, the guide screw 59 and the receiving portion 51 function as limiting components, and the head 59a of the guide screw 59 screwed by the base 53 abuts against the bottom surface of the countersunk hole 51e in the receiving portion 51 to limit the upward displacement of the receiving portion 51 caused by the coil springs 55A and 55B. In other words, the receiving portion 51 is urged upward by the coil springs 55A and 55B as elastic components, and the movement range is limited by the head 59a of the guide screw 59. Therefore, when the aforementioned striking vibration is transmitted to the receiving portion 51, the receiving portion 51 vibrates in a manner having a predetermined stroke in the vertical direction. In addition, in this structure, two coil springs 55A and 55B are used, but their number can be set arbitrarily.

[0095] In addition, if Figure 4 As shown, the receiving portion 51 has a snap-fitting portion 57 for supporting the sprue portion 13 of the die-cast product 11. The die-cast product 11 is provided with a snap-fitting portion 58 that snaps with the snap-fitting portion 57 on the receiving portion 51 side. The snap-fitting portion 57 on the receiving portion 51 side includes: a convex portion 57a ​​formed on a portion of the receiving portion 51; and a pair of concave portions 57b, 57b, which are provided on both sides of the convex portion 57a. Figure 6As shown, the convex portion 57a ​​is provided in a manner protruding upward from the upper surface of the receiving portion 51. The engaging portion 58 on the die-cast product 11 side includes: a concave portion 58a formed in the sprue portion 13; and a pair of convex portions 58b, 58b, which are provided on both sides of the concave portion 58a and protrude toward the receiving portion 51. When the die-cast product 11 and the receiving portion 51 are overlapped, the convex portion 57a ​​on the receiving portion 51 side is inserted into the concave portion 58a on the die-cast product 11 side, and the concave portion 58a and convex portion 58b on the die-cast product 11 side are inserted into the convex portion 57a ​​and concave portion 57b on the receiving portion 51 side, the die-cast product 11 is supported in a state of being positioned on the receiving portion 51. That is, the die-cast product 11 is positioned on the receiving portion 51 by the engagement of the convex portion 57a ​​with the concave portion 58a and the engagement of the concave portion 57b with the convex portion 58b, and the rotation displacement centered on the position is limited by the engagement of the concave portion 57b with the convex portion 58b. In addition, each engaging portion 57, 58 is not limited to the above-mentioned structure as long as it can support the die-cast product 11 on the receiving portion 51. For example, it can also be a structure such as a clamping mechanism that can position and support either side on the other side.

[0096] Next, the procedure and effects of a method for separating the die-cast product 11 using the above-described separation device 100 will be described.

[0097] Figure 7 is a flow chart showing the steps of the method for separating a die-cast product. First, Figure 3 As shown, the movable plate 33 is raised, and the air hammers 23A and 23B are moved to the retreated positions away from the support portion 21. In this state, the die-cast product 11 is supported by the support portion 21 (S1).

[0098] Figure 8 is from Figure 4 The support portion 21 viewed from the V1 direction and the side view of the die-cast product 11 supported by the support portion 21. Figure 8 As shown, the aforementioned engaging portions 57, 58 (see Figure 4 , Figure 5 ) are engaged with each other so that the sprue portion 13 of the die-cast product 11 is supported by the receiving portion 51. This step can be performed using an automatic conveying device (not shown) or can be performed manually.

[0099] Next, drive Figure 1 The air cylinder 37 shown moves the movable plate 33 downward, and moves the top of the chisel 47 of the air hammers 23A and 23B to a position in contact with the runner portion 15 of the die-cast product 11 (S2). At this time, the inclination of the hammer holding parts 31A and 31B is appropriately adjusted by the tilting mechanism according to the type and size of the die-cast product 11.

[0100] Then, the air hammers 23A and 23B are driven to apply striking vibration to the runner portion 15 ( S3 ).

[0101] Fig. 9 It means that the chisel 47 and Figure 8 FIG. 1 is an explanatory diagram of a state in which the runner portion 15 of the die-cast product 11 is in contact. Fig.10 So Fig. 9 The partial cross-section of FIG. Fig. 9 As shown, it is preferred that when the distances from the positions Pa and Pb where the chisel 47 contacts the runner portion 15 to the center axis Axs of the sprue portion 13 are La and Lb, the distances La and Lb are equal (La=Lb). Thus, the impact vibration applied to the first runner 15a and the second runner 15b is balanced, and the vibration can be evenly transmitted to the first runner 15a and the second runner 15b.

[0102] In addition, if Fig.10 As shown, the chisel 47 is preferably set at an inclination angle so that the central axis Axt of the chisel 47 coincides with the normal direction of the surface of the runner portion 15. In this case, striking vibration can be applied from the normal direction of the surface of the runner portion 15, and a vibration component that helps to separate the product portion 11a can be efficiently applied.

[0103] Furthermore, it is preferred that the chisel 47 that contacts the runner portion 15 is located at a position of the runner portion 15 that is closer to the sprue portion 13 than the product portion 11a. Thus, it is possible to apply striking vibration to the vicinity of the sprue portion 13 that is relatively similar in design shape, so that the separation operation can be reliably performed regardless of the runner shape and the product type (item). In addition, since the product portion 11a is separated in a manner that does not allow the chisel 47 to contact the product portion 11a, the product portion 11a will not be deformed or scratched.

[0104] Fig.11 is a schematic representation of the Fig. 9 The die-cast product 11 is schematically cross-sectionally shown along line XI-XI. Fig.11 The die-cast product 11 shown includes: a first runner 15a extending to one side with the sprue portion 13 as the center and a second runner 15b extending to the other side, a plurality of weirs 19 extending in a direction orthogonal to the direction in which the runners extend are provided on the first runner 15a and the second runner 15b, and a product portion 11a is provided at the top of each weir 19. The chisel 47 contacts the first runner 15a and the second runner 15b on both sides of the sprue portion 13.

[0105] In this case, it is preferable to set the distance from the center of the sprue portion 13 to the chisel 47 to Ls and the distance from the dam portion 19 connected to the product portion 11a to the chisel 47 to Lg so that the distance Ls is shorter than the distance Lg (Ls<Lg). Thus, the position where the impact vibration is applied from the chisel 47 to the runner portion 15 is a position closer to the sprue portion 13 than the product portion 11a. As a result, when the impact vibration from the chisel 47 is transmitted to the product portion 11a through the first runner 15a and the second runner 15b, the amplitude of the impact vibration is further increased in the runner on the product portion 11a side, thereby promoting the fracture of the dam portion 19. Therefore, even for the same die-cast product 11, the driving force required for the air hammers 23A and 23B can be suppressed to a small level by setting the contact position of the chisel 47 to the relationship of Ls<Lg.

[0106] The striking vibrations generated by the air hammers 23A and 23B are continuously applied to the runner portion 15 until the product portion 11 a is separated from the runner portion 15 ( S4 ).

[0107] Fig.12 This is an explanatory diagram showing the state in which the product portion 11a is separated from the runner portion 15. The impact vibration applied to the runner portion 15 causes a large stress to be generated in the weir portion 19 formed with a smaller cross-sectional area than the runner portion 15. As a result, the weir portion 19 breaks, and the product portion 11a is separated from the runner portion 15 and falls. The fallen product portion 11a is recovered by a product recovery portion not shown in the figure and prepared in advance. The product portion 11a separated in this way is still connected to the overflow portion 17, and the remaining portion other than such product portion 11a is removed through other processes.

[0108] As described above, according to the separation method of the die-cast product using the separation device 100 of the present structure, the product portion 11a of the die-cast product 11 is separated from the hot runner portion 11b by the air hammers 23A and 23B, thereby achieving miniaturization and low cost of the equipment. In addition, the striking vibration from the air hammers 23A and 23B is not directly applied to the product portion 11a, but is applied to the hot runner portion 11b, thereby being able to reliably separate the product portion 11a from the hot runner portion 11b without causing damage to the product portion 11a. In particular, even in the case of a thin product, the product can be separated without deformation.

[0109] Furthermore, since the contact position and inclination angle of the air hammers 23A and 23B with respect to the hot runner portion 11b can be freely adjusted, it is possible to cope with various shapes of die-cast products 11. In addition, since the striking vibration is applied while the die-cast product 11 is positioned at a fixed position of the support portion 21, the product portion 11a can be reliably separated, and production loss is unlikely to occur. As a result, it is not necessary to visually check the residue, and automation can be easily achieved.

[0110] Furthermore, since the chisels 47 of the air hammers 23A and 23B are respectively brought into contact with a pair of first runners 15a and second runners 15b extending on both sides of the sprue portion 13 of the die-cast product 11, the die-cast product 11 can be fixed to the support portion 21 with good balance. In addition, by using a plurality of air hammers 23A and 23B simultaneously to generate striking vibrations, the separation time of the product portion 11a can be shortened, thereby shortening the production cycle of the product. For example, in the case of a zipper component, the separation time can be reduced to less than 1 second.

[0111] Thus, the present invention is not limited to the above-mentioned embodiments, and changes and applications made by those skilled in the art based on the combination of the structures of the embodiments, the description of the specification, and the known technologies are also within the scope of the present invention and are included in the scope of the claims.

[0112] As described above, the present specification discloses the following matters.

[0113] (1) A device for separating a die-cast product, which applies vibration to a die-cast product including a product portion and a hot runner portion connected to the product portion, so that the product portion is separated from the die-cast product, wherein the device for separating a die-cast product is characterized in that it comprises:

[0114] a supporting portion, which supports the hot runner portion of the die-cast product;

[0115] an air hammer that causes a chisel provided at a top end portion to generate striking vibration; and

[0116] a moving mechanism that moves the air hammer between a retreat position and a contact position, wherein when the air hammer is located at the contact position, the chisel contacts the hot runner portion of the die-cast product supported by the support portion,

[0117] The chisel of the air hammer is brought into contact with the hot runner portion to apply the striking vibration to the hot runner portion.

[0118] According to the die-cast product separation device, an air hammer using air as a power is used to separate the product part of the die-cast product, so that a compact and low-cost structure can be achieved. In addition, the impact vibration from the air hammer is applied to the hot runner part, so the product part is not damaged.

[0119] (2) In the device for separating die-cast products described in (1),

[0120] The hot runner portion includes: a sprue portion; a runner portion connected to the sprue portion; and a weir portion connecting the runner portion and the product portion.

[0121] The support portion supports the sprue portion,

[0122] The air hammer brings the chisel into contact with the runner portion to apply the striking vibration to the runner portion.

[0123] According to the die-cast product separation device, the product portion can be reliably separated from the runner portion by applying striking vibration from the air hammer to the runner portion to break the weir portion.

[0124] (3) In the separation device for die-cast products described in (2),

[0125] The air hammer applies the striking vibration from a normal direction of the surface of the runner portion.

[0126] According to the die-cast product separation device, the striking vibration from the air hammer can be efficiently applied to the runner portion.

[0127] (4) In the separation device for die-cast products described in (2),

[0128] The sprue portion and the support portion are respectively provided with engaging portions having concave and convex shapes that engage with each other.

[0129] According to the die-cast product separation device, the die-cast product can be positioned at the fixed position of the support portion by engaging the engaging portions of the sprue portion and the support portion with each other.

[0130] (5) In the separation device for die-cast products described in (2),

[0131] The runner portion includes a first runner extending toward one side and a second runner extending toward the other side with the sprue portion as a center, and the product portion is provided on at least one of the first runner and the second runner.

[0132] The separation device of the die-cast product comprises:

[0133] a first air hammer that brings the chisel into contact with the first runner to apply the striking vibration to the first runner; and

[0134] a second air hammer that brings the chisel into contact with the second runner to apply the striking vibration to the second runner.

[0135] According to the die-cast product separation device, the first air hammer applies striking vibration to the first runner, and the second air hammer applies striking vibration to the second runner, thereby causing each runner portion to vibrate with good balance, and the product portions can be separated more reliably.

[0136] (6) In the separation device for die-cast products described in (4),

[0137] The support portion comprises:

[0138] Pedestal;

[0139] a receiving portion, which is disposed facing the base and has the engaging portion supporting the sprue portion; and

[0140] The vibration support mechanism is provided between the receiving portion and the base, and supports the receiving portion to which the striking vibration is transmitted in a vibration-free manner.

[0141] According to the die-cast product separation device, the die-cast product can be supported by the receiving portion while being vibrated, so that the product portion can be easily separated.

[0142] (7) In the device for separating die-cast products described in (6),

[0143] The vibration support mechanism comprises:

[0144] an elastic component that applies force to the receiving portion in a direction away from the base; and

[0145] A limiting component limits the movement range of the receiving portion caused by the elastic component.

[0146] According to the die-cast product separating device, the movable range of the receiving portion is restricted by the restricting member, and the receiving portion is elastically biased by the elastic member, thereby making it possible to vibrate the receiving portion within the movable range.

[0147] (8) In the device for separating die-cast products described in (1),

[0148] The moving mechanism comprises:

[0149] a hammer holding portion that holds the air hammer in a tilt-free manner; and

[0150] A driving portion moves the air hammer held by the hammer holding portion in a direction approaching or moving away from the support portion.

[0151] According to the die-cast product separation device, the inclination angle of the air hammer can be changed by the hammer holding part, and the air hammer can be moved closer or farther by the driving part, so the direction and position of the striking vibration of the air hammer can be easily set to a desired direction and position.

[0152] (9) A method for separating a die-cast product, wherein vibration is applied to a die-cast product comprising a product portion and a hot runner portion connected to the product portion, so that the product portion is separated from the die-cast product, the method for separating the die-cast product comprising:

[0153] The step of supporting the hot runner portion of the die-cast product on a supporting portion;

[0154] a step of causing an air hammer that generates striking vibration in a chisel provided at a tip portion to move to a position where the chisel contacts the hot runner portion of the die-cast product supported by the support portion; and

[0155] A step of generating striking vibration from the air hammer and applying the striking vibration to the hot runner portion.

[0156] According to the separation method of the die-cast product, the product part of the die-cast product is separated by using an air hammer using air as a power, so that the product part can be separated with a miniaturized and low-cost structure. In addition, the impact vibration from the air hammer is applied to the hot runner part, so the product part is not damaged.

[0157] (10) In the method for separating a die-cast product described in (9),

[0158] The hot runner portion includes: a sprue portion; a runner portion connected to the sprue portion; and a weir portion connecting the runner portion and the product portion.

[0159] The separation method of the die-cast product comprises:

[0160] a step of causing the support portion to support the sprue portion; and

[0161] The step of bringing the chisel of the air hammer into contact with the runner portion to apply striking vibration to the runner portion.

[0162] According to this method of separating a die-cast product, the product portion can be reliably separated from the runner portion by applying striking vibration from an air hammer to the runner portion to break the weir portion.

[0163] (11) In the method for separating a die-cast product according to (10),

[0164] The air hammer is brought into contact with a position of the runner portion that is closer to the sprue portion than the product portion.

[0165] According to the separation method of the die-cast product, the striking vibration can be applied near the sprue part, so the separation action can be reliably performed regardless of the runner shape and the product type (item). In addition, in the runner on the product part side, the amplitude of the striking vibration is further increased to promote the breaking of the weir part.

[0166] (12) In the method for separating a die-cast product according to (10) or (11),

[0167] The runner portion includes a first runner extending toward one side and a second runner extending toward the other side with the sprue portion as a center, and the product portion is provided on at least one of the first runner and the second runner.

[0168] A first air hammer, which is one of the air hammers, contacts the first runner to apply striking vibration.

[0169] A second air hammer, which is the other of the air hammers, comes into contact with the second runner to apply striking vibration.

[0170] According to the die-cast product separation method, the first air hammer applies striking vibration to the first runner, and the second air hammer applies striking vibration to the second runner, thereby making it possible to vibrate each runner in a well-balanced manner and more reliably separate the product parts.

Claims

1. A device for separating die-cast products, the device (100) for separating die-cast products applying vibration to a die-cast product (11) comprising a product portion (11a) and a hot runner portion (11b) connected to the product portion (11a), so that the product portion (11a) is separated from the die-cast product (11), the device (100) for separating die-cast products being characterized in that it comprises: A supporting portion (21) supporting the hot runner portion (11b) of the die-cast product (11); An air hammer (23A, 23B) that causes a chisel (47) disposed at a top end to generate striking vibration; as well as a moving mechanism that moves the air hammer (23A, 23B) between a retreat position and a contact position, wherein when the air hammer (23A, 23B) is located at the contact position, the chisel (47) contacts the hot runner portion (11b) of the die-cast product (11) supported by the support portion (21), The chisel (47) of the air hammer (23A, 23B) is brought into contact with the hot runner portion (11b), and the striking vibration is applied to the hot runner portion (11b).

2. The separation device for die-cast products according to claim 1, characterized in that: The hot runner portion (11b) includes: a sprue portion (13); a runner portion (15) connected to the sprue portion (13); and a weir portion (19) connecting the runner portion (15) and the product portion (11a). The support portion (21) supports the sprue portion (13), The air hammer (23A, 23B) brings the chisel (47) into contact with the runner portion (15) to apply the striking vibration to the runner portion (15).

3. The separation device for die-cast products according to claim 2, characterized in that: The air hammers (23A, 23B) apply the striking vibration from the normal direction of the surface of the runner portion (15).

4. The separation device for die-cast products according to claim 2, characterized in that: The sprue portion (13) and the support portion (21) are respectively provided with engaging portions (57, 58) having concave and convex shapes that engage with each other.

5. The separation device for die-cast products according to claim 2, characterized in that: The runner portion (15) includes a first runner (15a) extending toward one side with the sprue portion (13) as the center and a second runner (15b) extending toward the other side, and the product portion (11a) is provided on at least one of the first runner (15a) and the second runner (15b). The die-cast product separation device (100) comprises: a first air hammer (23A) that brings the chisel (47) into contact with the first runner (15a) to apply the striking vibration to the first runner; and A second air hammer (23B) brings the chisel (47) into contact with the second runner (15b) to apply the striking vibration to the second runner (15b).

6. The separation device for die-cast products according to claim 4, characterized in that: The support portion (21) comprises: Base (53); a receiving portion (51) disposed opposite to the base (53) and having the engaging portion (57) supporting the sprue portion (13); and The vibration support mechanism is provided between the receiving portion (51) and the base (53) and supports the receiving portion (51) to which the striking vibration is transmitted in a vibration-free manner.

7. The separation device for die-cast products according to claim 6, characterized in that: The vibration support mechanism comprises: Elastic components (55A, 55B) that apply force to the receiving portion (51) in a direction away from the base (53); and A limiting component (59) limits the movement range of the receiving portion (51) caused by the elastic components (55A, 55B).

8. The separation device for die-cast products according to claim 1, characterized in that: The moving mechanism comprises: a hammer holding portion (31A, 31B) that holds the air hammer (23A, 23B) in a tiltable manner; and A driving portion (37) moves the air hammers (23A, 23B) held by the hammer holding portions (31A, 31B) toward or away from the support portion (21).

9. A method for separating a die-cast product, comprising applying vibration to a die-cast product (11) comprising a product portion (11a) and a hot runner portion (11b) connected to the product portion (11a), so that the product portion (11a) is separated from the die-cast product (11), the method for separating the die-cast product comprising: A step of supporting the hot runner portion (11b) of the die-cast product (11) on a supporting portion (21); A step of causing an air hammer (23A, 23B) that generates striking vibrations of a chisel (47) disposed at a top end portion to move to a position where the chisel (47) contacts the hot runner portion (11b) of the die-cast product (11) supported by the support portion (21); as well as A step of generating striking vibration from the air hammer (23A, 23B) and applying the striking vibration to the hot runner portion (11b).

10. The method for separating die-cast products according to claim 9, characterized in that: The hot runner portion (11b) includes: a sprue portion (13); a runner portion (15) connected to the sprue portion (13); and a weir portion (19) connecting the runner portion (15) and the product portion (11a). The method for separating the die-cast product comprises: a step of causing the support portion (21) to support the sprue portion (13); and The step of bringing the chisel (47) of the air hammer (23A, 23B) into contact with the runner portion (15) to apply striking vibration to the runner portion (15).

11. The method for separating die-cast products according to claim 10, characterized in that: The air hammers (23A, 23B) are brought into contact with a position of the runner portion (15) that is closer to the sprue portion (13) than the product portion (11a).

12. The method for separating die-cast products according to claim 10 or 11, characterized in that: The runner portion (15) includes a first runner (15a) extending toward one side with the sprue portion (13) as the center and a second runner (15b) extending toward the other side, and the product portion (11a) is provided on at least one of the first runner (15a) and the second runner (15b). A first air hammer (23A) as one of the air hammers contacts the first runner (15a) to apply striking vibration. A second air hammer (23B) as the other of the air hammers comes into contact with the second runner (15b) to apply striking vibration.

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