JP2002316224A - Guide device, guide device adjusting method, and die set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a guide means from deviating upward in a guide structure by means of the guide means having a plurality of rolling elements between a bush and a post. SOLUTION: In the guide device, the post 3 of a die holder 1 and the bush 4 of a punch holder 2 are slidable to each other via the guide means 5. In the guide means, the plurality of rolling elements are held by a cylindrical holding body 7 in a rolling manner. A stepped cylindrical spacer member 9 and a spring 8 on the outer side thereof are interposed in the post. The spring is abutted on a stepped part of the spacer member, and the spacer member faces the bush. At the top dead center, an upper end of a large diameter part 11 urged by the spring is abutted on a lower end of the bush, a space is generated between a lower end of the guide means and an upper end of a small diameter part 10, and the lower end of the small diameter part 10 is not brought into contact with a template 1 at the bottom dead center. The spring force is not applied to the guide means, and the guide means is less easily shifted during the pressing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guide device provided in a mold device, in particular, a guide bush and a guide post are provided on a pair of mold plates of the mold device, and a rolling member such as a bearing is mounted on a cylindrical holding member. The present invention relates to a guide device and the like in which a guide means rotatably provided is interposed between the guide bush and the guide post.

[0002]

2. Description of the Related Art As a guide device of this type, a guide device having a structure as shown in FIGS. 5 and 6 has been conventionally known. This device is used to allow a pair of mold plates to move while maintaining a parallel state in a press mold which is a mold device. That is, this guide device is used in a press die having a die holder 1 as a lower die plate for mounting a die as one die and a punch holder 2 as an upper die plate for mounting a punch as the other die. Is connected to the die holder 1 and the punch holder 2 and has a function of supporting the punch holder 2 in a vertically movable manner while keeping the punch holder 2 parallel to the die holder 1.

The guide device includes a guide post 3 fixed upright on a die holder 1, a guide bush 4 mounted on the punch holder 2 and inserted with the guide post 3, and inserted into a gap between the guide post 3 and the guide bush 4. Provided guiding means 5. The guide means 5 has a number of rolling elements 6 (for example, bearings or rollers) that roll in the gap between the guide post 3 and the guide bush 4 to guide relative movement between the two. It has a cylindrical holding body 7 (retainer) that holds the housing rotatably. The guide means 5 is urged upward by a spring 8 interposed between the guide means 5 and the die holder 1 around the guide post 3.

Here, the rolling element 6 is pressed between the side peripheral surface of the guide post 3 and the inner peripheral surface of the guide bush 4 so as to be freely movable, so that the guide post 3 and the guide bush 4 repeat relative movement. However, the relative position of the guide means 5 with respect to the guide post 3 and the guide bush 4 should not change. That is, the guide bush 4 with respect to the guide post 3
Is determined, the position of the guide means 5 determined by these is also a fixed position.

Furthermore, in order to maintain the rigidity of the guide device in a press-type die of the guide type using the guide means 5 using the rolling elements 6, the guide means 5 needs to be at an appropriate position. For example, the highest rigidity is required during the press cycle when the punch holder 2 comes to the bottom dead center and plastically processes the work. At this time, the guide post 3 and the guide bush 4
The guide means 5 is positioned and assembled by the spring 8 so that the number of the rolling elements 6 press-fitted therebetween is maximized.

[0006]

When the above-described guide device for a press die is used for actual press working, the displacement of the guide means 5 after the reciprocation of the guide bush 4 with respect to the guide post 3 is repeated. May occur. A case has been reported in which the direction of the displacement is shifted in both the up and down directions. The cause of the displacement has not yet been clarified yet, but the following three factors have been cited.

The first is the effect of the upward biasing force on the guide means 5 by the spring 8. The guide means 5 is always urged upward by a spring 8. Due to this load, the load balance during the reciprocating motion is lost, and each time the guide unit 5 reciprocates, the guide unit 5 may shift upward by a small amount, and may be accumulated due to repetition of the reciprocating motion for a long period of time and become visible. is there.

The second is when the rolling element 6 is press-fitted between the guide post 3 and the guide bush 4 or when the guide post 3
And the effect of the load received when the guide bush 4 is released from between the guide bush 4 and the guide bush 4. As described above, the number of rolling elements 6 press-fitted between the guide post 3 and the guide bush 4 becomes maximum when the punch holder 2 reaches the bottom dead center. Then, as the punch holder 2 rises, the rolling elements 6 are sequentially released from the load state sandwiched between the guide post 3 and the guide bush 4 at the lower end of the guide bush 4 and the upper end of the guide post 3.
When the punch holder 2 is lowered, the rolling elements 6 are sequentially press-fitted between the guide post 3 and the guide bush 4 at the lower end of the guide bush 4 and the upper end of the guide post 3. Here, the load generated when the rolling element 6 is opened and press-fitted depends on the shape of the tip of the guide post 3 and the tip of the inner diameter of the guide bush 4, but it is practically impossible to make both the same shape. For this reason, the load balance during the reciprocating motion is lost, and a small amount of displacement occurs each time the guide unit 5 performs the reciprocating motion, and may be accumulated as a visible displacement after a long-term reciprocating motion.

The third is the effect of poor rotation due to foreign matter adhering to the rolling elements 6. The mold guide is used in a press working environment, and fine foreign matter may adhere to the guide post 3 during use. The rolling element 6 is pressed into the guide post 3 and the guide bush 4 in a state of being compressed by 0.01 to 0.02 mm, and the rolling element 6 rides on a foreign substance having a size of about 0.01 mm or more existing in the general environment. Even in such a case, there is a possibility that the rotational movement is hindered and a small amount of deviation occurs, and the deviation is accumulated after a long-term reciprocation.

[0010] When a displacement occurs, the number of rolling elements 6 press-fitted between the guide post 3 and the guide bush 4 decreases, and the function of the guide means 5 becomes insufficient. If an extreme displacement occurs, the guide means 5 may come off the guide bush 4 and damage the guide means 5. Further, there is a possibility that the rolling elements 6 scattered due to breakage of the guide means 5 may be pinched and damaged by the mold. Therefore, it is important to prevent the guide unit 5 from being displaced in the press die guide.

As a conventional countermeasure against the aforementioned displacement of the guide means 5, Japanese Patent Laid-Open No. 2000-74055 proposes an invention of a linear motion device. This device, as shown in FIG.
A guide device in a mold device similar to that described above, wherein a ring-shaped stopper 2 abuts on a lower end of a guide means 5.
0, the outer diameter of the stopper 20 is set to be larger than the inner diameter of the guide bush 4, and the spring 8 is interposed around the guide post 3 between the stopper 20 and the die holder 1 side. In this case, when the punch holder 2 is lowered to a predetermined position, the lower end of the guide bush 4 comes into contact with the ring-shaped stopper 20, and thereafter the guide means 5 is moved by the spring 8
Not energized by. Thereby, the upward displacement of the guide means 5 due to the urging force of the spring 8 is prevented.

According to the present invention, the guide means 5 can be prevented from being loaded by the spring 8 when the punch holder 2 comes near the bottom dead center, and a certain effect can be expected with respect to the displacement caused by the biasing force of the spring 8. . However, it is considered that the displacement occurs when the load applied to one rolling element 6 exceeds a predetermined value. However, depending on conditions such as the spring constant of the spring 8 and the stroke, the punch holder 2 may be located near the top dead center. There may be some deviations at some point, and there is room for improvement in this regard.

According to the present invention, the guide bush 4 and the guide means 5 can be adjusted to adjust the time at which the guide means 5 can be prevented from being loaded by the spring 8 depending on the use conditions of the mold apparatus, such as the stroke of the mold. The length must be designed individually. In the mold industry in which standard products are supplied with a short delivery time, the delivery time is delayed and the cost is increased, which is not desirable. Further, as described above, the guide means 5 may be shifted downward during the press working. However, the present invention prevents the guide means 5 from being shifted upward by the spring 8, and depending on the invention, Cannot be prevented.

In addition, a method of providing a stopper at the tip of the guide post 3 and restricting the guide means 5 from shifting upward has been widely used. Many proposals have been made to prevent or restrict the upward displacement of the guide means 5 as described above.
There is no proposal to prevent or regulate downward displacement.

The present invention has been made in view of such a point, and in a guide structure using a guide means 5 having a plurality of rolling elements 6 between a guide bush 4 and a guide post 3,
It is an object of the present invention to prevent the guide unit 5 from shifting upward and to restrict the shifting in the downward direction.

[0016]

According to a first aspect of the present invention, there is provided a guide device including a first template (die holder 1) to which one mold is attached and a second template (die holder) to which the other mold is attached. A mold holder having a punch holder 2), wherein the first and second template plates are provided in a mold apparatus which moves up and down relatively between a top dead center and a bottom dead center; It is for guiding the movement of. The guide device includes a guide bush (4) provided on the first template and a guide post (3) provided on the second template and inserted into the guide bush. I have. Further, the guide device has guide means (5) in which a plurality of rolling elements (6) are rotatably held by a cylindrical holding body (7), and the guide means is composed of a guide post and a guide bush. It is provided movably between. In addition, the guide device has a spring (8).
The spring is mounted on the guide post at a position between the guide means and the second template in the axial direction of the guide post. The guide device further has a spacer member (9) movably mounted on the outer peripheral surface of the guide post inside the spring. The spacer member is movably mounted on the outer peripheral surface of the guide post inside the spring, and has a cylindrical small diameter portion (10) with which the lower end of the guide means abuts on the upper end thereof, and the outer peripheral surface of the guide post. The upper end of the spring is in contact with the lower end of the small diameter portion so as to form a gap into which the guide means can be inserted, and the upper end of the spring contacts the guide bush. The cylindrical large-diameter part (1
1). And this spacer member is comprised as follows. That is, at the top dead center, the upper end of the large diameter portion biased by the spring abuts the lower end of the guide bush, and a gap is generated between the lower end of the guide means and the upper end of the small diameter portion, At the bottom dead center, the lower end of the small-diameter portion does not contact the second template. Then, when the guide means moves downward and comes into contact with the spacer member with the operation of the mold device, the lower end of the small diameter portion of the spacer member and the second template at the bottom dead center. Touch,
The spacer member functions as a stopper for the guide unit.

According to a second aspect of the present invention, there is provided the guide device according to the first aspect, wherein the guide post (3) is provided.
A stopper (12) for restricting the displacement of the guide means (5) is provided at the tip of the.

According to a third aspect of the present invention, there is provided a method of adjusting a guide device, wherein at least one of a small diameter portion (10) and a large diameter portion (11) of the spacer member (9) provided in the guide device according to the first aspect. Is adjusted in accordance with one and the other molds attached to the first and second template plates (1, 2).

In the die set according to the fourth aspect, a first template (die holder 1) to which one mold is attached.
And a second mold plate (punch holder 2) to which the other mold is attached and which moves up and down relative to the first mold plate between the top dead center and the bottom dead center. . Further, a guide bush (4) is provided on the first template, and the guide bush (4) is provided on the first template.
The template is provided with a guide post (3) inserted into the guide bush. A guide means (5) including a plurality of rolling elements (6) and a cylindrical holding body (7) for rotatably holding the rolling elements is movable between the guide post and the guide bush. Is provided. A spring (8) is disposed between the guide means and the second template in the axial direction of the guide post, and is mounted on the guide post. A spacer member (9) is movably mounted on the outer peripheral surface of the guide post inside the spring. This spacer member has a cylindrical small diameter portion (1) with which the lower end of the guide means contacts the upper end.
0) and the outer peripheral surface of the guide post, the upper end of the small diameter portion is provided with an enlarged diameter so as to form a gap into which the guide means can be inserted. It has a cylindrical large-diameter portion (11) that is in contact with and has an upper end in contact with the guide bush. According to this spacer member, when the upper end of the large diameter portion urged by the spring at the top dead center contacts the lower end of the guide bush, the lower end of the guide means and the upper end of the small diameter portion And a lower end of the small-diameter portion does not contact the second template at the bottom dead center. Then, when the guide means moves downward and comes into contact with the spacer member with the operation of the mold device, the lower end of the small diameter portion of the spacer member and the second template at the bottom dead center. In contact, the spacer member functions as a stopper for the guide means.

[0020]

The guide device for a press die according to the present invention combines a cylindrical spacer member (9) between a guide means (5) and a spring (8), and the spacer member is a cylinder of a guide post (3). External fit (free fit) so that it slides against the outer peripheral surface
In addition, the spring is fitted (freely fitted) on the outer peripheral surface. Therefore, the spacer member (9) moves by the expansion and contraction of the spring caused by the vertical reciprocation of the template (punch holder 2). The operation of the present invention will be described below with reference to FIGS.

FIG. 1 shows a case where the punch holder 2 is at the top dead center.
Shown in The lower end surface of the large diameter portion of the spacer member comes into contact with the upper end of the spring 8 and receives an urging force upward, and the upper end surface of the large diameter portion comes into contact with the lower end surface of the guide bush 4. The length of the large diameter portion is adjusted so that there is a gap such that the upper end surface of the small diameter portion does not contact the lower end surface of the guide means 5. Therefore, the load of the spring 8 is applied to the guide bush 4 via the spacer member, and the guide means 5 does not receive the urging force of the spring 8.

FIG. 2 shows a case where the punch holder 2 is at the bottom dead center.
Shown in The spring 8 is compressed by the mold stroke.
The lower end surface of the large diameter portion of the spacer member comes into contact with the upper end of the spring 8 and receives an urging force upward, and the upper end surface of the large diameter portion comes into contact with the lower end surface of the guide bush 4. Since the amount of movement of the guide means 5 from the top dead center is の of the die stroke, a gap corresponding to the distance increases between the lower end face of the guide means 5 and the upper end face of the small diameter portion of the spacer member. Therefore, also in this case, the load of the spring 8 is applied to the guide bush 4 via the spacer member, and the guide means 5 does not receive the urging force of the spring 8. Since the lower end face of the guide means 5 and the upper end face of the small diameter portion do not come in contact with each other even during the stroke, the guide means 5 does not receive the urging force of the spring 8 during the stroke of the punch holder 2. For this reason, it is possible to eliminate the possibility that the guide means 5 shifts upward due to the urging force of the spring 8.

If the guide means 5 shifts downward during the repetitive operation of the press, the guide means 5 and the upper end surface of the small diameter portion of the spacer member abut at the top dead center of the punch holder 2. The urging force of the spring 8 is applied to the guide means 5 via the spacer member, and the downward displacement of the guide means 5 is suppressed.

The guide means 5 despite the urging force of the spring 8
When the downward shift has progressed, at the bottom dead center of the punch holder 2 at the beginning, the gap of 1/2 of the mold stroke between the lower end surface of the guide means 5 and the upper end surface of the small diameter portion becomes narrow. To go.

This displacement can proceed until the lower end surface of the guide means 5 contacts the upper end surface of the small diameter portion, and the lower end surface of the small diameter portion contacts the upper surface of the template (die holder 1). However, since the small diameter portion functions as a stopper, further progress of the displacement is restricted, and the guide means 5 does not extremely displace.

Generally, lubricating oil is applied to the sliding surfaces of the guide post 3 and the guide bush, and the sliding surface is exposed to the outside. However, since the sliding surface of the guide post 3 is covered by the spacer member, lubrication is performed. Oil is less likely to scatter around and foreign matter is less likely to adhere to the sliding surface.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. This example is implemented as a set of guide structures of a press die (die set). Usually, two or more guide posts 3 are implanted in a die holder 1 as one die plate, and the other die is formed. The punch holder 2 as a plate is provided with two or more bushes at positions corresponding to the guide posts 3, and each guide post 3 is movably inserted into each punch holder 2.

In this example, the guide post 3 is formed as a rod having a circular cross section. The fixing structure of the guide post 3 is not particularly limited. For example, a flange is formed in the middle of the guide post 3, a mounting hole is formed in the die holder 1, and a portion of the guide post 3 below the flange is fitted into the mounting hole. The guide post 3 may be fixed to the die holder 1 by making the flange abut on the surface of the die holder 1, communicating with the mounting hole, and screwing a fixing screw from a screw hole opened on the back side of the die holder 1. A guide bush 4 is attached to the other punch holder 2 in a through hole formed at a predetermined position in a tight fit state, and a part of the guide bush 4 protrudes downward from the punch holder 2. The cross-sectional shape of the guide bush 4 is configured such that the outer peripheral shape is circular and the inner peripheral shape is the same as the outer shape of the guide post 3.

The gap between the outer peripheral surface of the guide post 3 and the inner peripheral surface of the guide bush 4 is set to a predetermined value. In this example, the gap between the outer peripheral surface of the guide post 3 and the inner peripheral surface of the guide bush 4 is set. Guide means 5 is provided between them. The guide means 5 has a function of aligning the axis of the guide post 3 with the axis of the guide bush 4, and has a cylindrical (in this example, cylindrical) holding body 7 with an open top and bottom, and an inside of the holding body 7. And a plurality of rolling elements 6 rotatably press-fitted in a state in which each part projects outward. The guide means 5 is used in a state where the rolling element 6 is in rolling contact with the outer peripheral surface of the guide post 3 and the inner peripheral surface of the guide bush 4. As a result, the guide post 3 and the guide bush 4 are fitted so as to be relatively reciprocable in a state in which the guide post 3 and the guide bush 4 are in rolling contact with the rolling elements 6 and no backlash occurs.

Below the guide means 5, there is a spacer member 9 which is movably fitted (freely fitted) to the guide post 3,
Further, a spring 8 which is a compression coil spring is interposed between the spacer member 9 and the die holder 1.

The spacer member 9 is a cylindrical member having a step and opened at the top and bottom, and includes a small diameter portion 10 facing the die holder 1 and a large diameter portion 11 facing the bush. Small diameter part 1
0 is externally fitted (freely fitted) to the cylindrical surface of the guide post 3,
The spring 8 fits (plays loosely) with respect to the outer diameter, and the lower end surface of the guide means 5 can abut on the upper end surface (the upper surface of the collar-shaped step portion). The large-diameter portion 11 is integrally connected to the upper end surface of the small-diameter portion 10 with a stepped portion having an enlarged diameter. Is set to get.

In the test of this example, the diameter of the guide post 3 was 2
0 mm, and the inner diameter of the small diameter portion 10 of the spacer member 9 is 0.3 m with respect to the outer diameter of the guide post 3 so as to operate smoothly.
m. The inner diameter of the large diameter portion 11 is set to have a play of about 0.6 mm with respect to the outer diameter of the guide means 5 so that the back diameter of the small diameter portion 10 and the inclination of the spacer member 9 do not contact the rolling element 6.

The first example of the embodiment of the present invention will be described more specifically. First, in the normal operation, the spring 8 is
Explain that no urging force is applied. At the top dead center of the mold shown in FIG. 1, the gap A is adjusted between the lower end surface of the guide means 5 and the upper end surface of the small diameter portion 10. While the mold is descending, the spacer member 9 descends integrally with the upper mold.
Since the descending amount of the guide means 5 is の of the moving amount of the upper die, the gap A increases. Here, assuming that the stroke of the mold is C, the gap D between the lower end surface of the guide means 5 and the upper end surface of the small diameter portion 10 at the bottom dead center of the mold is D = A + as shown in FIG.
(1/2) C. Therefore, the lower end surface of the guide means 5 does not come into contact with the upper end face of the small diameter portion 10 during the normal operation cycle, and the biasing force of the spring 8 is not applied to the guide means 5.

Next, the effect of this embodiment in the case where the guide means 5 is shifted downward for some reason during the repetitive operation of the press will be described. When the guide means 5 is displaced downward, the guide means 5 and the small-diameter portion 10 are located at the top dead center of the punch holder 2.
Will come into contact with each other. The urging force of the spring 8 is applied to the guide means 5 via the small diameter portion 10 and acts in a direction for suppressing the downward shift of the guide means 5.

The guide means 5 despite the urging force of the spring 8
When the downward shift proceeds, the lower end surface of the guide means 5 comes into contact with the upper end surface of the small-diameter portion 10, and further, the spacer member 9.
Also shift downward. The displacement of the guide means 5 is such that the gap D between the guide means 5 and the upper end face of the small diameter part 10 and the gap B between the die holder 1 and the lower end face of the small diameter part 10 shown in FIG. It is possible to proceed until the small diameter portion 10 and the guiding means 5 come into continuous contact (hereinafter, such a position in the operation of the present apparatus is referred to as a "maximum deviation position").

In order to explain the effect of the present invention, the press-fitting length G of the guide means 5 press-fitted between the guide bush 4 and the guide post 3 at the bottom dead center in FIG. This is shown by comparing the case and the deviation. In FIG. 2, the guide post 3 is assumed to extend above the upper end face of the guide means 5 at the bottom dead center for simplicity of description.

In FIG. 2, the press-fit length G can be shown as a difference F between the height of the lower end face of the guide bush 4 and the lower end face of the guide means 5 and the difference between the length E of the guide means 5. That is, G = EF. On the other hand, when the guide means 5 is shifted downward to the maximum shift position,
Assuming that the press-fit length in this case is G ', G' = E-F-
(B + D). Here, D in FIG. 1 is D = A + (1 /
2) C, and the ratio of G ′ to G is (G ′ / G) = 1−
(A + B + C / 2) / (EF).

In the test of the present invention, A = 1.5 m
m, B = 2 mm, C = 20 mm, E = 60 mm, F = 4
mm, and in this case, (G ′ / G) = 0.76.
Even when the guide means 5 is displaced downward to the maximum displacement position, a press-fit length of 76% of the predetermined position is obtained, so that there is almost no problem in the function of the mold.

On the other hand, in the conventional mold shown in FIG. 6, the displacement of the guide means 5 may progress until the spring 8 is crushed as shown in FIG. This is shown in FIG.
Corresponds to the case where the press-fit length is further shifted by the length H of the small-diameter portion 10. If the press-fit length in this case is G ", G" = E-F
− (B + D + H). The ratio of G "to G is (G" / G)
= 1− (A + B + H + C / 2) / (E−F). In the test of the present invention, H = 40 mm, and (G ″ / G) =
0.04. If the guide means 5 is displaced to the maximum in the downward direction, the press-fit length becomes 4% of the predetermined position, and the guide means 5 is almost disengaged and does not function as a mold guide.

In this case, the guide means 5 is provided near the top dead center.
If the guide bush 4 is completely disengaged from the guide bush 4, when the punch holder 2 descends, the upper end face of the guide means 5 and the lower end face of the guide bush 4 may collide with each other and break the guide means 5. According to the present invention, such a fatal injury can be avoided.

In the above example, the guide post 3 is located at the bottom dead center of the mold.
Has been described above to extend above the upper end surface of the guide means 5, but the same function is achieved when the guide post 3 is at a position lower than the upper end surface of the guide means 5 at the bottom dead center of the mold. .

In general, a guide host and a guide bush 4
The sliding surface is coated with lubricating oil, and the sliding surface is exposed to the outside. However, the small-diameter portion 10 and the large-diameter portion 11 of the spacer member 9 are cylindrical and slide the guide post 3. The exposed area of the surface can be reduced, and the effect of reducing the scattering of the lubricating oil around and the adhesion of foreign matter to the sliding surface can be exhibited. This can reduce the possibility of displacement of the guide means 5 due to foreign matter on the sliding surface between the guide post 3 and the guide bush 4. Furthermore, wear on the sliding surface is reduced, so that the life of the guide can be extended.

Since the constituent material of the spacer member 9 is required to have abrasion resistance against sliding with the guide post 3 and oil resistance against press punching oil, it is preferable to use engineering plastics such as polyacetal, polystyrene and ABS. . It is preferable that the spacer member 5 be formed integrally with the engineering plastic by injection molding. In this example, the material of the spacer member 9 was formed integrally by injection molding using polyacetal.

In the present invention, the lengths of the small-diameter portion 10 and the large-diameter portion 11 of the spacer member 9 need to be individually adjusted according to the use conditions of the mold. Therefore, a stepped cylindrical spacer member 9 having a predetermined length is prepared as a standard product, and cut in accordance with the specification of the mold to adjust the length, thereby shortening the delivery time of the mold. Can respond.

A second example of the embodiment of the present invention shown in FIG. 4 is a mold having the spacer member 9 of the first example.
The stopper 12 is provided at the tip of the guide post 3. FIG. 4 shows respective states at the top dead center and the bottom dead center on the left and right with respect to the center line. The stopper 12 has a dish-shaped stopper member 13 and a shaft 14 that is connected to the center of the lower surface of the stopper member 13 and that can enter and exit the guide post 3.
With this configuration, the upward displacement of the guide means 5 can be reliably restricted, and more stable use of the mold is enabled.

In the above embodiment, the rolling element 6 is a ball and the guide post 3 is a cylinder. However, the rolling element 6 may be a guide post 3 having a polygonal cross section by using a needle roller. In the above embodiment, the guide bush 4 is fixed to the punch holder 2 and the biasing force of the spring 8 acts upward. However, the guide device is inverted while maintaining the positional relationship of the above embodiment. It is also possible to use.

[0047]

According to the present invention, in the guide device for a press die, the upward displacement of the guide means due to the urging force of the spring can be prevented, and the upward displacement due to other factors can also be restricted.

Further, even if the guide means is shifted downward due to some factor during the repetitive operation of the press, the downward shift can be restricted.

In the spacer member of the present invention, the exposed area of the sliding surface of the guide post can be reduced by making the small-diameter portion and the large-diameter portion cylindrical, so that the lubricating oil scatters around and adheres to the sliding surface. And the possibility of displacement of the guide means due to foreign matter on the sliding surface between the guide post and the guide bush can be reduced. Furthermore, wear on the sliding surface is reduced, so that the life of the guide can be extended.

As the spacer member of the present invention, a stepped cylindrical spacer member having a predetermined length is prepared as a standard product, and cut according to the specifications of the mold to adjust the length. We can respond to delivery dates.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a state at a top dead center in a first example of an embodiment of the present invention.

FIG. 2 is a sectional view showing a state at a bottom dead center in the first example of the embodiment of the present invention.

FIG. 3 is a cross-sectional view showing a state where a guide means 5 is shifted in the first example of the embodiment of the present invention.

FIG. 4 is a sectional view showing a second example of the embodiment of the present invention.

FIG. 5 is a cross-sectional view showing a first example of a conventional guide device.

FIG. 6 is a sectional view showing a first example of a conventional guide device.

FIG. 7 is a sectional view showing a second example of a conventional guide device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Die holder 2 ... Punch holder 3 ... Guide post 4 ... Guide bush 5 ... Guide means 6 ... Rolling element 7 ... Holding body 8 ... Spring 9 ... Spacer member 10 ... Small diameter part 11 ... Large diameter part 12 ... Stopper

 ────────────────────────────────────────────────── ─── Continued on the front page F term (reference) 3J104 AA12 AA19 AA23 BA11 DA06 DA13 EA03 4E050 EA02 EA05

Claims (4)

[Claims] A first mold plate to which one mold is attached and a second mold plate to which the other mold is attached, wherein the first and second mold plates have a top dead center and a bottom dead center. A guide device that is provided on a mold device that moves relatively up and down between points and guides the movement of the first and second template plates; a guide bush provided on the first template plate; A guide post provided on a second template and inserted into the guide bush; a plurality of rolling elements; and a cylindrical holding body rotatably holding the rolling elements, wherein the guide post and the guide bush are provided. A guide mounted movably between the guide post and a spring mounted on the guide post so as to be disposed between the guide and the second template in the axial direction of the guide post; Moveably mounted on the outer peripheral surface of the guide post inside the spring The upper end of the small-diameter portion is formed such that a gap into which the guide means can be inserted is formed between the cylindrical small-diameter portion where the lower end of the guide means abuts on the upper end thereof and the outer peripheral surface of the guide post. A spacer member having a cylindrical large-diameter portion whose upper end is in contact with the guide bush while the upper end of the spring is in contact with the lower end thereof. The upper end of the large-diameter portion urged by a spring abuts the lower end of the guide bush, and a gap is formed between the lower end of the guide means and the upper end of the small-diameter portion. A spacer member disposed so as to form a gap between the lower end of the mold and the second mold plate, wherein the guide means moves downward with the operation of the mold apparatus and comes into contact with the spacer member. At the bottom dead center The small diameter portion of the lower end and the second mold plate is in contact pacer member, guide device, characterized in that said spacer member serves as a stopper of the guide means. 2. The guide device according to claim 1, wherein a stopper for restricting a displacement of the guide means is provided at a tip of the guide post. 3. The spacer member provided in the guide device according to claim 1, wherein at least one of the small-diameter portion and the large-diameter portion of the spacer member has an axial length that is attached to the first and second template plates. A method for adjusting a guide device, wherein the adjustment is performed according to the other mold. 4. A first mold plate to which one of the molds is attached, and a first mold plate to which the other mold is attached, which is vertically moved relative to the first mold plate between a top dead center and a bottom dead center. A second template moving; a guide bush provided on the first template; a guide post provided on the second template and inserted into the guide bush; A guide member movably provided between the guide post and the guide bush, the guide member being provided between the guide post and the guide bush, and the guide member in the axial direction of the guide post; A spring mounted on the guide post so as to be disposed between the guide plate and the second mold plate; a spring movably mounted on an outer peripheral surface of the guide post inside the spring, and a lower end of the guide means at an upper end thereof. A cylindrical small-diameter portion that comes into contact with the outer periphery of the guide post The upper end of the small-diameter portion is provided with an enlarged diameter so that a gap into which the guide means can be inserted is formed between the guide bush and the upper surface of the spring. A spacer having a cylindrical large-diameter portion that abuts thereon, wherein at the top dead center, an upper end of the large-diameter portion biased by the spring abuts a lower end of the guide bush and the guide means. A gap is formed between the lower end of the small diameter portion and the upper end of the small diameter portion, and at the bottom dead center, a spacer member is arranged such that a gap is formed between the lower end of the small diameter portion and the second template. When the guide means moves downward and comes into contact with the spacer member with the operation of the mold device, the lower end of the small diameter portion of the spacer member and the second template come into contact at the bottom dead center. The spacer member is the guide means A die set that functions as a stopper for the die.