JP3663153B2 - Forging press with lubricant spraying device and method of spraying lubricant in forging press with lubricant spraying device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a forging press with a lubricant spraying device and a lubricant spraying method in a forging press with a lubricant spraying device. In the forging press, a forging material is pressed between a pair of molds, and the forging material is formed into the shape of a hole formed in the pair of molds. At this time, the frictional force generated between the forging material and the mold is reduced to prevent the deformation of the mold, thereby extending the mold life, the flow of the forging material in the mold hole, the dimensional accuracy and surface roughness of the forged product. In order to improve the thickness, a lubricant is applied to the surface of the mold. The present invention relates to a forging press with a lubricant spraying device capable of applying a lubricant to the surface of a mold and a lubricant spraying method in a forging press with a lubricant spraying device.
[0002]
[Prior art]
FIG. 4 is a schematic explanatory view of the forging press 100 provided with the automatic feeding device 110. As shown in the figure, the forging press 100 includes an upper die holder 104 and a lower die holder 105, and a pair of upper and lower upper molds 102 and 103 on the lower surface of the upper die holder 104 and the upper surface of the lower die holder 105. Are attached to each.
In FIG. 4, reference numeral 110 denotes an automatic feeding device for supplying the forging material B before molding between the upper mold 102 and the lower mold 103, or conveying the molded forging material B to the next process, Reference numeral 111 denotes a finger for supporting the forging material B, and reference numeral 112 denotes a feed bar for moving the finger 111 supporting the forging material B up and down and front and rear (in a direction perpendicular to the paper surface in FIG. 4).
Further, reference numeral 120 denotes a lubricant spraying device for spraying lubricant onto the surfaces of the upper and lower upper molds 102 and 103. The lubricant spraying device 120 includes a pair of upper and lower upper molds 102 and 103. The arm 121 is movable forward and backward, and a nozzle portion 122 provided at the tip of the arm 121 is provided.
For this reason, if the forging material B is supplied between the upper die 102 and the lower die 103 by the automatic feeder 110, and then the upper die holder 104 is lowered to bring the upper die 102 and the lower die 103 closer to each other, Since the forging material B can be sandwiched and pressed between the mold 102 and the lower mold 103, the forging material B can be formed into the shape of the mold holes provided in the upper mold 102 and the lower mold 103.
Next, after the upper die holder 104 is raised to separate the upper die 102 and the lower die 103, the forging material B is supported by the fingers 111 of the automatic feeder 110 and the feed bar 112 is advanced, the forging material B Can be transported to the next step.
Then, while the forging material B is being conveyed by the automatic feeding device 110, the nozzle portion 122 of the lubricant spraying device 120 is advanced so that the arm 121 is positioned between the upper die 102 and the upper end of the forging material B. For example, the lubricant can be sprayed to the mold holes of the upper mold 102 and the lower mold 103 by the nozzle portion 122.
[0003]
[Problems to be solved by the invention]
However, in the conventional forging press 100, the nozzle portion 122 can move horizontally toward the upper die 102 and the lower die 103, but its height is constant. Therefore, in the forging press 100 that produces a wide variety of forged products, the arm 121 can move the feed bar 112 even when molding the forging material B in which the lift amount of the feed bar 112 is the largest when separated from the lower mold 103. The height of the nozzle part 122 must be set so as not to hit. Then, as shown in FIG. 5, the distance between the nozzle part 122 and the upper mold 102 is shortened, and the range in which the lubricant can be sprayed on the upper mold 102 is narrowed. Then, in the case of a mold for molding a flat thin product, the area of the mold hole in the upper mold 102 is large, so that the lubricant cannot be sprayed on the entire mold hole of the upper mold 102. For this reason, when the forging material B is pressed between the upper die 102 and the lower die 103 and pressed, the flow of the forging material B in the die hole becomes worse, or the surface roughness of the forging material B decreases. There is a problem of end.
[0004]
In view of such circumstances, the present invention can reliably spray a lubricant onto the mold in an optimum state according to the mold to be molded, and can prevent the quality of the molded forged product from being deteriorated. It is an object of the present invention to provide a forging press with a lubricant spraying device and a lubricant spraying method in a forging press with a lubricant spraying device.
[0005]
[Means for Solving the Problems]
A forging press with a lubricant spraying device according to claim 1 is a pair of dies for forming a forging material composed of a fixed die and a movable die, and for supplying and forging the forging material to the pair of dies. A forging press comprising an automatic feeding device and a lubricant spraying device for spraying lubricant onto the surfaces of the pair of molds, wherein the automatic feeding device supports a pair of fingers for supporting the forging material And a feed bar for carrying the forging material supported by the pair of fingers into and out of the pair of molds, and the lubricant spraying device is directed toward the surfaces of the pair of molds. A nozzle for injecting the nozzle, an arm for inserting and removing the nozzle between the pair of molds from between the movable mold and the feed bar, and a direction for moving the movable mold closer to and away from the fixed mold, Nozzle and one Characterized in that comprising a mold nozzle moving device and for adjusting the relative position of.
A forging press with a lubricant spraying device according to a second aspect is the invention according to the first aspect, wherein when the forging material is carried into the pair of molds by the automatic feeding device, the nozzle moving device has the automatic feeding. The feed bar of the device moves the nozzle of the lubricant spraying device closer to the fixed die in accordance with the operation of bringing the forging material closer to the fixed die.
The lubricant spraying method in the forging press with a lubricant spraying device according to claim 3 is a pair of molds for sandwiching a forging material composed of a fixed mold and a movable mold, and a forging material on the pair of molds. A forging press provided with an automatic feeding device for feeding and unloading and a lubricant spraying device for spraying a lubricant onto the surfaces of the pair of molds, wherein the nozzle of the lubricant spraying device supplies the lubricant Before spraying the pair of molds, the relative position between the nozzle and the pair of molds is adjusted in a direction in which the movable mold is moved closer to and away from the fixed mold.
A lubricant spraying method in a forging press with a lubricant spraying device according to claim 4 is the automatic feeding device according to claim 3, wherein the forging material is carried into the pair of molds by the automatic feeding device. The feed bar moves the nozzle of the lubricant spraying device closer to the fixed die in accordance with the operation of bringing the forging material closer to the fixed die, and injects the lubricant from the nozzle of the lubricant spraying device in the middle It is characterized by that.
[0006]
According to the first aspect of the present invention, any nozzle can be used as long as the nozzle is moved to a position where the lubricant can be sprayed onto the entire surface of both mold holes of the pair of molds. The lubricant can be reliably sprayed over the entire mold hole of the mold. Therefore, the flow of the forging material in the mold cavity can be stabilized, and the surface roughness of the forging material can be kept good.
According to the invention of claim 2, since the nozzle is moved toward the fixed mold in accordance with the movement of the feed bar approaching the fixed mold, even if the nozzle is a mold for molding a forging material having a large lift amount, If the lubricant is sprayed from the nozzle to the mold when moved to a position where the lubricant can be sprayed to the entire mold hole surface of both molds, the lubricant can be reliably sprayed to the entire mold hole of the mold. Can do. Therefore, the flow of the forging material in the mold cavity can be stabilized, and the surface roughness of the forging material can be kept good.
According to the third aspect of the present invention, any mold can be used as long as the nozzle is moved to a position where the lubricant can be sprayed over the entire mold holes of the pair of molds. Lubricant can be reliably sprayed on the entire surface of the hole. Therefore, the flow of the forging material in the mold cavity can be stabilized, and the surface roughness of the forging material can be kept good.
According to the invention of claim 4, since the nozzle is moved toward the fixed mold in accordance with the movement of the feed bar approaching the fixed mold, even if the nozzle is a mold for molding a forging material having a large lift amount, If the lubricant is sprayed from the nozzle to the mold when moved to a position where the lubricant can be sprayed to the entire mold hole surface of both molds, the lubricant can be reliably sprayed to the entire mold hole of the mold. Can do. Therefore, the flow of the forging material in the mold cavity can be stabilized, and the surface roughness of the forging material can be kept good.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic explanatory view of a forging press 1 with a lubricant spraying device of the present embodiment. As shown in the figure, a forging press 1 with a lubricant spraying device according to this embodiment includes a pair of upper and lower molds 2, 3, an automatic feeding device 10 and a lubricant spraying device 20. It is characterized in that the relative position between the nozzle 22 of the lubricant spraying device 20 and the pair of upper and lower molds 2, 3 can be adjusted in the direction of approaching and separating from the mold 3.
[0008]
First, a pair of upper and lower molds 2 and 3 will be described.
In FIG. 1, reference numerals 4 and 5 indicate an upper die holder and a lower die holder, respectively. A plurality of molds 2 and 3 are provided between the upper die holder 4 and the lower die holder 5. Of the molds 2 and 3, the upper mold 2 is attached to the lower end of the upper die holder 4, and the lower mold 3 is attached to the upper end of the lower die holder 5.
For this reason, if the forging material B is arranged between the pair of upper and lower molds 2 and 3 and the upper die holder 4 is lowered, the upper mold 2 approaches the lower mold 3, and the upper mold 2 and the lower mold 3 Since the forging material B can be pressed between them, the forging material B can be formed. In addition, since a plurality of molds 2 and 3 are provided between the upper die holder 4 and the lower die holder 5, a plurality of steps can be performed simultaneously. The upper mold 2 and the lower mold 3 are a movable mold and a fixed mold as defined in the claims.
[0009]
Next, the automatic feeder 10 will be described.
As shown in FIG. 1, between the upper die holder 4 and the lower die holder 5, a pair of left and right feed bars 12, 12 are provided on both sides of the pair of upper and lower molds 2, 3. The pair of left and right feed bars 12, 12 are provided so as to be movable up and down and back and forth (perpendicular to the paper surface in FIG. 1).
A plurality of pairs of left and right pairs of fingers 11 and 11 are attached to the pair of left and right feed bars 12 and 12 so as to face each other. The plurality of sets of left and right pairs of fingers 11, 11 are provided so as to be close to and away from the forging material B attached to the plurality of molds 2, 3.
[0010]
For this reason, if forging is completed and the upper die 2 moves upward together with the upper die holder 4, the pair of left and right fingers 11, 11 are brought close to the molded forging material B, and the pair of left and right fingers 11. , 11 can support the forging material B. Then, if the pair of left and right feed bars 12, 12 are moved upward while the forging material B is supported by the pair of left and right fingers 11, 11, the forging material B is separated from the lower mold 3. If the pair of feed bars 12, 12 are advanced, the forging material B can be sent to the next process.
[0011]
Next, the lubricant spraying device 20 will be described.
In FIG. 1, reference numeral 21 indicates an arm of the lubricant spraying device 20. The arm 21 is held at its base end side by a bearing 23b of the support frame 23 so that it can move forward and backward along its axial direction.
The support frame 23 is provided with arm advance / retreat means 31 for advancing and retracting the arm 21. The arm support means 31 has one end attached to the arm 21 and an advancing / retracting member 31c having a screw hole formed at the other end, and a screw provided parallel to the arm 21 and screwed into the screw hole of the advancing / retreating member 31c. The shaft 31b is composed of a servo motor 31a having a main shaft attached to one end of the screw shaft 31b.
For this reason, when the servo motor 31a is driven, the screw shaft 31b rotates and the holding member 31c moves forward and backward along the screw shaft, so that the arm 21 can move forward and backward along the axial direction.
[0012]
A branching nozzle 22 is provided at the tip of the arm 21 so as to correspond to the plurality of molds 2, 3. The nozzle 22 is capable of spraying a lubricant simultaneously above and below the nozzle 22. For example, in the case of a four-process mold, the nozzles 22 are provided corresponding to the molds 2 and 3 in each process, and in the five-process mold, the nozzles 22 are arranged corresponding to the middle three molds 2 and 3 respectively. A nozzle 22 is provided.
Therefore, if the arm 21 is advanced when the pair of upper and lower molds 2 and 3 are separated, the nozzle 22 provided at the tip of the arm 21 is moved up and down between the upper mold 2 and the feed bar 12. It can be inserted between a pair of molds 2 and 3. If the lubricant is sprayed from the nozzle 22 in a state where the nozzle 22 is inserted between the pair of upper and lower molds 2, 3, the lubricant can be sprayed onto the surfaces of the pair of upper and lower molds 2, 3.
In addition, about the number of metal mold | dies 2 and 3, and nozzle 22 arrangement | positioning, it is not limited to said arrangement | positioning, A various arrangement | positioning can be taken. ,
[0013]
The support frame 23 that supports the arm 21 is supported by a nozzle moving device 25 including a servo motor 25a, a screw shaft 25b, and a moving member 25c. .
As shown in FIG. 1, a moving member 25 c is attached to the lower end of the support frame 23. The moving member 25c is formed with a screw hole (not shown), and a screw shaft 25b arranged vertically is screwed into the screw hole. A main shaft of a servo motor 25a is attached to one end of the screw shaft 25b.
Therefore, if the servo motor 25a is rotated forward and backward, the screw shaft 25b rotates and the moving member 25c moves up and down along the screw shaft 25b, so that the support frame 23 can be moved up and down horizontally. That is, the arm 21 supported horizontally by the support frame 23 can be moved up and down while being kept horizontal. Therefore, the relative position of the nozzle 22 attached to the tip of the arm 21 and the pair of upper and lower molds 2, 3 can be adjusted in the direction in which the upper mold 2 is moved closer to and away from the lower mold 3.
[0014]
Since the forging press 1 with the lubricant spraying device of the present embodiment has the above-described configuration, the nozzle 22 is moved by the nozzle moving device 25 so that the lubricant is applied to the entire mold holes of the pair of upper and lower molds 2 and 3. If it is moved to a position where it can be sprayed, the lubricant can be reliably sprayed over the entire mold holes of the pair of upper and lower molds 2 and 3 regardless of the mold. Therefore, the flow of the forging material B in the mold cavity can be stabilized, and the surface roughness of the forging material B can be kept good.
[0015]
As shown in FIG. 3, the rear end of the support frame 23 is attached to the upper end of the base frame B installed on the floor so as to be swingable up and down, and only the front end of the support frame 23 is attached by the nozzle moving device 25. A structure that swings up and down may be used. In this case, since the load of the arm 21, the support frame 23, and the arm advance / retreat means 31 can be supported not only by the nozzle moving device 25 but also by the base frame B, the nozzle moving device 25 can be made compact.
[0016]
Furthermore, the mechanism for moving the arm 21 forward and backward toward the pair of upper and lower molds 2 and 3 is not limited to the above structure, and any mechanism can be used as long as the arm 21 can be moved back and forth along its axial direction. Any device may be used.
Furthermore, the nozzle moving device 25 is not limited to the above structure, and any device may be used as long as it can move the support frame 23 up and down.
[0017]
Next, the operation and effect of the forging press 1 with the lubricant spraying device of the present embodiment will be described.
The forging press 1 with a lubricant spraying device of the present embodiment includes a plurality of molds 2 and 3 in order to perform a plurality of processes at the same time, but does not stamp all the molds 2 and 3. Forging may be performed in a state where only one of the adjacent dies 2 and 3 is stamped. For example, in the case of performing stamping in four processes at the same time, when stamping is performed by the mold in the first process, stamping is performed in the third process, but stamping is performed in the second and fourth processes. In order to avoid this, one forging material B is skipped and conveyed by the automatic feeder 10.
[0018]
As shown in FIG. 1, when the forging is completed, the upper die 2 rises together with the upper die holder 4, and the pair of upper and lower molds 2 and 3 are separated from each other.
[0019]
Next, if the pair of left and right fingers 11, 11 are brought close to a forging material B (not shown), the forging material B formed by the pair of left and right fingers 11, 11 can be supported. Then, the forged material B can be separated from the lower die 3 by moving the pair of left and right feed bars 12, 12 upward while the forged material B is supported by the pair of left and right fingers 11, 11. Then, if the pair of left and right feed bars 12 are moved forward, the molded forging material B is moved to the dies 2 and 3 in the next process (not shown).
[0020]
Next, the height at which the arm 21 is moved up and down together with the support frame 23 by the nozzle moving device 25 and the lubricant can be sprayed onto the entire mold holes of both the upper and lower molds 2, 3, for example, the moving direction of the upper mold 2. The nozzle 22 is moved to the same height as the middle of the pair of upper and lower molds 2, 3.
Then, the arm 21 is advanced by the arm advancing / retreating means 31, and the nozzle 22 is inserted between the upper and lower molds 2, 3 from between the feed bar 12 and the upper mold 2, and the lubricant is sprayed from the nozzle 22. By doing so, the lubricant can be reliably sprayed over the entire mold holes of the pair of upper and lower molds 2 and 3.
[0021]
If the forging material B is a forged product (shaft product) having a long shaft portion extending downward from the main body portion, such as a constant velocity joint or a pinion shaft, the nozzle is formed as follows. 22 adjusts the position where the lubricant is sprayed.
[0022]
FIG. 2 is an explanatory view of the lubricant spraying operation when the shaft article product is stamped. Note that FIG. 2 shows the dies 2 and 3 that have been punched, and this time the dies 2 and 3 are not punched, that is, the forging material B is not carried in.
First, the pair of left and right feed bars 12, 12 are moved upward while the forging material B is supported by the pair of left and right fingers 11, 11 and then moved forward. Then, the automatic forging apparatus 10 moves the forged material B, which is not shown, to the next process die.
Next, after the arm 21 is lifted together with the support frame 23 by the nozzle moving device 25, the arm 21 is advanced by the arm advance / retreat means 31, and the nozzle 22 is inserted between the feed bar 12 and the upper mold 2 (FIG. 2). (A)).
Eventually, when the feed bar 12 is lowered, the forging material B is placed on the lower die of the next step (not shown). At this time, the feed bar 12 is lowered, that is, the feed bar 12 is moved to the lower die 3. When the arm 21 is lowered in accordance with the movement approaching the nozzle 22, the nozzle 22 can be moved closer to the lower mold 3 and can be separated from the upper mold 2 (FIG. 2 (B)).
Then, when the lubricant is sprayed from the nozzle 22 when the nozzle 22 is lowered to a height at which the lubricant can be sprayed over the entire mold holes of both the upper and lower pair of molds 2, 3, the pair of upper and lower molds Lubricant can be reliably sprayed on the entire surface of the mold cavities 2 and 3.
[0023]
Therefore, according to the forging press 1 with the lubricant spray device of the present embodiment, the lubricant can be reliably sprayed onto the molds 2 and 3 in an optimum state according to the molds 2 and 3 to be molded. There exists an effect that it can prevent that the quality of the molded forging product falls.
[0024]
【The invention's effect】
According to the first aspect of the present invention, since any lubricant can reliably spray the entire surface of the mold hole of any mold, it is possible to stabilize the flow of the forging material in the mold hole. And the surface roughness of the forged material can be kept good.
According to the invention of claim 2, even in a mold for molding a forging material having a large lift amount, the lubricant can be reliably sprayed on the entire surface of the mold hole of the mold. The flow can be stabilized and the surface roughness of the forging material can be kept good.
According to the third aspect of the present invention, the lubricant can be reliably sprayed over the entire mold hole of any mold, so that the flow of the forging material in the mold hole can be stabilized. And the surface roughness of the forged material can be kept good.
According to the invention of claim 4, even in a mold for molding a forging material having a large lift amount, the lubricant can be reliably sprayed on the entire surface of the mold hole of the mold. The flow can be stabilized and the surface roughness of the forging material can be kept good.
[Brief description of the drawings]
FIG. 1 is a schematic explanatory view of a forging press 1 with a lubricant spraying device of the present embodiment.
FIG. 2 is an explanatory diagram of a lubricant spraying operation when a shaft article product is stamped.
FIG. 3 is a schematic explanatory view of a forging press 1 with a lubricant spraying device according to another embodiment.
FIG. 4 is a schematic explanatory view of a forging press 100 provided with an automatic feeding device 110.
5 is an explanatory diagram of a lubricant spraying operation in a conventional forging press 100. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Forging press with lubricant spraying device 2 Upper die 3 Lower die 10 Automatic feeding device 11 Finger 12 Feed bar 20 Lubricant spraying device 21 Arm 22 Nozzle 25 Nozzle moving device

Claims (4)

A pair of molds for forming a forging material composed of a fixed mold and a movable mold, an automatic feeder for feeding and unloading the forging material to the pair of molds, and a surface of the pair of molds A forging press equipped with a lubricant spraying device for spraying a lubricant,
The automatic feeder is
A pair of fingers for supporting the forging material;
The forging material supported by the pair of fingers consists of a feed bar for carrying in and out of the pair of molds,
The lubricant spraying device is
A nozzle for injecting a lubricant toward the surfaces of the pair of molds;
An arm for inserting and removing the nozzle between the pair of molds from between the movable mold and the feed bar;
A forging press with a lubricant spraying device, comprising: a nozzle moving device that adjusts a relative position between the nozzle and the pair of molds in a direction in which the moving die is moved closer to and away from the fixed die. When the forging material is carried into the pair of molds by the automatic feeding device, the nozzle moving device is adapted to the operation in which the feed bar of the automatic feeding device brings the forging material closer to the fixed die, The forging press with a lubricant spraying device according to claim 1, wherein a nozzle of the lubricant spraying device is brought close to the fixed mold. A pair of molds for forming a forging material composed of a fixed mold and a movable mold, an automatic feeder for feeding and unloading the forging material to the pair of molds, and a surface of the pair of molds A forging press equipped with a lubricant spraying device for spraying a lubricant,
Before the nozzle of the lubricant spraying device sprays the lubricant onto the pair of molds, the relative position between the nozzle and the pair of molds is determined in the direction in which the movable mold approaches and separates from the fixed mold. A method for spraying a lubricant in a forging press with a lubricant spraying device, characterized in that the method is adjusted. When the forging material is carried into the pair of molds by the automatic feeding device, the nozzle of the lubricant spraying device is adjusted in accordance with the operation in which the feed bar of the automatic feeding device brings the forging material closer to the fixed die. 4. The method of spraying a lubricant in a forging press with a lubricant spraying apparatus according to claim 3, wherein the lubricant is sprayed from a nozzle of the lubricant spraying apparatus in the middle of the fixed mold.

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