CN212285639U

CN212285639U - Molding device

Info

Publication number: CN212285639U
Application number: CN202020210893.3U
Authority: CN
Inventors: 山本正道; 小柳朋彦
Original assignee: Daiwa Can Co Ltd
Current assignee: Daiwa Can Co Ltd
Priority date: 2019-09-17
Filing date: 2020-02-26
Publication date: 2021-01-05
Anticipated expiration: 2030-02-26
Also published as: JP7167358B2; JPWO2021053729A1; TWI804705B; WO2021053729A1; CN112517785A; TW202112522A

Abstract

The utility model provides a forming device, forming device (1) has: four support columns (22) extending in one direction, arranged at four corners of the rectangular region, and having a first side surface (22a) and a second side surface (22 b); a first slider (31) which is arranged in the rectangular region and is pressed by a pressing device (14); a second slider (32) which is pressed by at least one of the pressing device and the first slider; first guide rails (61a) provided on the first side surfaces and extending in one direction; second guide rails (61b) provided on the second side surfaces and extending in one direction; first guide members (62a) which are provided movably along the first guide rails on the first guide rails and fixed to the first slider; and second guide members (62b) which are provided movably along the second guide rails on the second guide rails and fixed to the second sliders.

Description

Molding device

Technical Field

The utility model relates to a with fashioned forming device of material.

Background

As a molding apparatus, an apparatus for performing press molding for molding a metal plate by an upper die and a lower die is known. As disclosed in japanese patent application laid-open No. 2008-132719, the molding device molds the material by pressing a slider, to which an upper mold is fixed, in one direction toward a lower mold by a pressing device, for example. Such a molding apparatus is used for molding a cylindrical can such as a can body of a bottle can.

Further, in the molding apparatus, there is also known a technique of guiding the movement of the slider in one direction by providing a cylindrical guide post and a cylindrical linear bush guided in one direction along the guide post.

Patent document 1: japanese patent laid-open No. 2008-132719

However, in the molding apparatus, in the structure in which the movement of the slider is guided by the guide post and the linear bush, it is difficult to increase the moving speed of the slider due to frictional resistance generated when sliding between the guide post and the linear bush. In this regard, the conventional molding apparatus has a problem of productivity.

Further, the guide post and the linear bush are likely to be displaced by a load generated at the time of press molding, and have a problem of durability.

Further, since the guide post and the linear bush are overlapped in one direction, the work of disassembling and assembling the guide post and the linear bush may become difficult at the time of maintenance of the molding apparatus.

SUMMERY OF THE UTILITY MODEL

Therefore, an object of the present invention is to provide a molding device capable of improving productivity, durability, and maintainability.

According to the utility model discloses an aspect, forming device 1 has: four pillars extending in one direction, arranged at four corners of the rectangular region, and having a first side surface and a second side surface; a first slider disposed in the rectangular region and pressed by a pressing device; a second slider pressed by at least one of the pressing device and the first slider; a first guide rail provided on each of the first side surfaces and extending in the one direction; a second guide rail provided on each of the second side surfaces and extending in the one direction; a first guide member that is provided movably along the first guide rail on each of the first guide rails and is fixed to the first slider; and a second guide member movably provided to each of the second guide rails along the second guide rail and fixed to the second slider.

According to another aspect of the present invention,

the pillar is formed in a shape in which the first side surface and the second side surface are orthogonal,

the first side surfaces and the second side surfaces of the adjacent pillars are opposite to each other.

According to another aspect of the present invention,

the first side surfaces are spaced apart from each other more than the second side surfaces are spaced apart from each other.

According to another aspect of the present invention,

the first guide member and the second guide member are provided in plurality on each of the first guide rails or each of the second guide rails.

According to another aspect of the present invention,

the molding device further has:

an upper die fixed to the second slide block;

and a lower mold disposed opposite to the upper mold.

According to another aspect of the present invention,

the lower die is provided with a plurality of lower dies,

the molding apparatus further includes a conveying device for sequentially moving the plurality of lower molds to positions opposite to the upper molds.

According to the utility model discloses, can provide the forming device that can improve productivity, durability and maintainability.

Drawings

Fig. 1 is a plan view showing a structure of a molding apparatus according to an embodiment of the present invention.

Fig. 2 is a side view showing the structure of the molding apparatus in a partial section.

Fig. 3 is a plan view showing a part of the structure of the molding apparatus.

Fig. 4 is a plan view showing the structure of a guide rail guide used in the molding apparatus.

Description of the marks

1: molding device

11: frame structure

12: sliding block

13: guide rail guide

14: pressure device

15: auxiliary pressurizing device

16: upper die

17: lower die

18: conveying device

19: control device

21: first base

22: support post

22 a: first side surface

22 b: second side surface

31: first slide block

32: second slide block

41: roof board part

41 a: hole part

42: side plate part

43: first connecting part

51: holding part

52: second connecting part

61: guide rail

61 a: first guide rail

61 b: second guide rail

62: guide member

62 a: first guide member

62 b: second guide member

71: abutting surface

81: guide body

82: rotary body

91: pressurization part

92: connecting part

Detailed Description

Hereinafter, the structure of the molding apparatus 1 according to an embodiment of the present invention will be described with reference to fig. 1 to 4.

Fig. 1 is a plan view showing a structure of a molding apparatus 1 according to an embodiment of the present invention, fig. 2 is a side view showing the structure of the molding apparatus 1 in a partial cross section, fig. 3 is a plan view showing the structure of the molding apparatus 1 partially omitted, and fig. 4 is a plan view showing a structure of a guide rail guide 13.

As shown in fig. 1 and 2, the molding device 1 includes, for example, a frame 11, a slider 12, a rail guide 13, a pressing device 14, an auxiliary pressing device 15, an upper die 16, a lower die 17, a conveying device 18, and a control device 19. The molding apparatus 1 is an apparatus for molding a material by applying pressure to the material using an upper mold 16 and a lower mold 17. The molding apparatus 1 is configured to be able to apply pressure to a material in a gravitational direction by, for example, disposing the upper mold 16 above the lower mold 17 in the gravitational direction. The molding apparatus 1 is used for, for example, one step of molding a can body of a bottle can.

For example, the frame 11 has a first base 21 provided on an installation surface on which the molding device 1 is installed, four pillars 22 provided on the first base 21, and a second base on which the pressurizing device 14 is installed. Note that the second base portion may be any structure as long as the pressurizing device 14 can be provided, and a detailed description thereof is omitted.

The first base 21 fixes four support columns 22 in a predetermined arrangement. The first base 21 has a rectangular main surface to which the four support posts 22 are fixed, for example.

The support post 22 is extended in one direction. In the present embodiment, the support column 22 is provided to extend in one direction along the direction of gravity. The four support columns 22 are arranged at the four corners of the rectangular region. In other words, the four support columns 22 are arranged in a so-called four-column-separated-four-corner arrangement relationship, and a region connecting the outer surfaces of the adjacent support columns 22 is formed in a rectangular shape. That is, the four support columns 22 face each other in two directions orthogonal to the other two support columns 22, and the two opposing support columns 22 are disposed at a predetermined interval. For example, four support columns 22 are disposed at four corners of the first base 21.

The pillar 22 has a plurality of side surfaces, two of which constitute a first side surface 22a extending in one direction and a second side surface 22b extending in one direction and intersecting the first side surface 22a in the plane direction. The pillar 22 is formed in a shape in which the first side surface 22a and the second side surface 22b are orthogonal, for example. Specifically, the horizontal cross section of the support column 22 is formed in a rectangular shape, and two adjacent side surfaces of the four side surfaces constitute the first side surface 22a and the second side surface 22b, respectively.

Each of the pillars 22 is disposed such that the first side surfaces 22a and the second side surfaces 22b of two adjacent pillars 22 face each other. Here, the interval between the first side surfaces 22a of the respective support columns 22 is set to be larger than the interval between the second side surfaces 22b of the respective support columns 22.

The slide 12 fixes the upper die 16, for example, at a portion thereof. The slider 12 is pressed by the pressing device 14 and moves in one direction by being guided by the rail guide 13. The slide 12 is pressed by the pressing device 14, and thereby moves the fixed upper die 16 toward the lower die 17.

The slider 12 has, for example, a first slider 31 and a second slider 32. The first slider 31 and the second slider 32 are connected to a part of the different guide rail guides 13. The slider 12 is configured such that the first slider 31 and the second slider 32 are movable independently of each other. The slider 12 is configured to be capable of pressing the second slider 32 in the moving direction by the first slider 31 pressed by the pressing device 14, for example.

The first slider 31 is configured to be able to contact the second slider 32 in the direction of gravity. The first slider 31 is pressed in one direction by the pressing device 14 to abut against the second slider 32, and the abutted second slider 32 is pressed in one direction. The first slider 31 is configured to be connectable to a part of the rail guide 13. The first slider 31 is disposed inside the four support columns 22 disposed in four directions. For example, the first slider 31 is disposed inside a rectangular region where the four support columns 22 are arranged. Here, the inner sides of the four struts comprise the area between the opposing first and second side faces 22a, 22 b. Specifically, the first slider 31 is located between the opposing first side surfaces 22a of the four pillars 22 and is located further inward than the opposing second side surfaces 22 b.

Specifically, the first slider 31 includes a top plate portion 41 that can be brought into contact with the second slider 32, a pair of side plate portions 42 provided on the top plate portion 41, and a plurality of first connection members 43 fixed to each of the pair of side plate portions. In addition, the first slider 31 constitutes a space in which the second slider 32 can be connected to a part of the rail guide 13.

The top plate 41 is formed to be able to abut against the second slider 32 from above. For example, the top plate 41 is formed in a flat plate shape having a rectangular main surface in the horizontal direction by the pressing device 14. The top plate 41 has a plurality of holes 41a communicating from the upper surface to the lower surface. The plurality of holes 41a are formed to allow a later-described connection portion 92 of the pressurizing device 14 to pass therethrough.

One of the pair of side plates 42 is provided along one side of the lower surface of the top plate 41, and the other is provided on the other side opposite to the one side. The main surfaces of the pair of side plate portions 42 face each other in a direction in which the second side surfaces 22b of the support 22 face each other. A plurality of first connecting members 43 are fixed to the side plate portion 42.

The first connecting part 43 is connected to a portion of the rail guide 13. The first connection member 43 is provided on the main surface of the side plate 42 at a position close to the first side surface 22a of the pillar 22. In addition, the same number of first link members 43 as the later-described guide 62 provided for each of the rail guides 13 is provided for one rail guide 13. In the present embodiment, two first link members 43 are provided for one rail guide 13.

The second slider 32 is disposed inside the first slider 31 and configured to be pressed by at least one of the pressing device 14 and the first slider 31. The second slider 32 is arranged in a direction in which the first slider 31 pressed by the pressing device 14 is pressed, with respect to the arrangement of the first slider 31. For example, the second slider 32 is disposed below the first slider 31 in the pressing direction. The second slider 32 is configured to fix a part of the rail guide 13. The second slide 32 is configured to be able to fix the upper mold 16 to the lower portion.

As a specific example, as shown in fig. 1 to 3, the second slider 32 has a holding portion 51 and a second connecting member 52.

The holding portion 51 is configured to hold the upper mold 16. The holding portion 51 is disposed inside the first slider 31. Specifically, the holding portion 51 is located below the top plate portion 41 in the moving direction and is located inside the pair of side plate portions 42 in the direction orthogonal to the moving direction.

The second connecting member 52 is connected to a portion of the rail guide 13. The second connecting member 52 is provided on the outer surface of the holding portion 51 at a position close to the second side surface 22b of the pillar 22. In addition, the same number of second coupling members 52 as the later-described guide 62 provided in each of the rail guides 13 is provided for one rail guide 13. In the present embodiment, two second connecting members 52 are provided for one third rail guide 13.

As shown in fig. 1 and 2, the rail guide 13 includes a rail 61 and a guide 62. The rail guide 13 is configured such that the rail 61 extends in one direction, and the guide 62 is movable along the extending direction of the rail 61. Further, the rail guide 13 restricts the movement of the guide 62 in the direction orthogonal to the extending direction of the rail 61. The guide rail guide 13 is a so-called linear guide, for example, an LM guide (registered trademark). The guide rail guide 13 guides the movement of the first slider 31 or the second slider 32 connected via the first connecting part 43 or the second connecting part 52.

The guide rail 61 is formed to be able to guide the movement of the guide 62 in one direction. Specifically, as shown in fig. 4, the guide rail 61 has a plurality of contact surfaces 71, and the plurality of contact surfaces 71 extend in one direction and contact the guide 62 in a direction orthogonal to the extending direction. The guide rail 61 is fixed to the pillar 22 by a plurality of bolts or the like attached along the extending direction.

The plurality of contact surfaces 71 are in contact with a part of the guide 62 in two directions orthogonal to the extending direction of the guide rail 61 and intersecting with each other. For example, four of the plurality of abutment surfaces 71 are provided obliquely to the first side surface 22a and the second side surface 22b of the pillar 22 in a direction orthogonal to the extending direction of the guide rail 61.

The guide rails 61 are provided on the first side surface 22a and the second side surface 22b of each pillar 22, respectively. Note that, for convenience of explanation, the guide rail 61 provided on the first side surface 22a will be explained below as the first guide rail 61a and the guide rail 61 provided on the second side surface 22b as the second guide rail 61 b.

The first guide rail 61a is provided on the first side surface 22a of each pillar. The first guide rail 61a extends in the same direction as the extending direction of the pillar 22.

The second guide rail 61b is provided on the second side surface 22b of each pillar 22. The second guide rail 61b extends in the same direction as the extending direction of the pillar 22. That is, the second rail 61b extends in the same direction as the first rail 61a, and is disposed in a direction orthogonal to the direction in which the first rail 61a extends, in a direction in which the first rail 61a is rotated by 90 degrees.

The guide 62 has a guide body 81 and a plurality of rotating bodies 82 fitted into the guide body 81. The guide 62 is provided on each of the guide rails 61, and is configured to be movable along the extending direction of the guide rail 61 and to be restricted from moving in a direction orthogonal to the extending direction of the guide rail 61.

The guide body 81 is configured to be able to bring the rolling bodies 82 into contact with the contact surfaces 71 of the guide rail 61. The guide body 81 is formed, for example, in a block shape having a cutout matching the outer shape of the guide rail 61 including a pair of recesses formed in the guide rail 61. The guide body 81 is connected to the first connection member 43 or the second connection member 52.

The rotating body 82 is incorporated in the guide body 81 and is disposed in contact with the surface of the guide rail 61. The rolling body 82 is provided at a plurality of places and is disposed so as to prevent the guide body 81 from falling off the guide rail 61. Specifically, as shown in fig. 4, the plurality of rolling elements 82 are provided so as to be capable of abutting against the respective abutment surfaces 71 of the guide rail 61, and are respectively opposed to each other in two directions orthogonal to the extending direction. The rotor 82 is, for example, a ball or a roller.

The guide 62 is provided on the first guide rail 61a and the second guide rail 61b, respectively. Note that, for convenience of explanation, the guide 62 provided to the first guide rail 61a will be described below as the first guide 62a and the guide 62 provided to the second guide rail 61b will be described below as the second guide 62 b.

The first guide 62a is provided on each first guide rail 61a so as to be movable along the first guide rail 61 a. Further, each first guide 62a is fixed to the first slider 31 via the first connecting member 43. In addition, for example, a plurality of first guides 62a are provided for one first guide rail 61 a. In the present embodiment, two first guides 62a are provided for one first guide rail 61a, one of which is fixed to the upper end portion of the first slider 31 and the other of which is fixed to the lower end portion of the first slider 31.

The second guide 62b is provided on each second guide rail 61b so as to be movable along the second guide rail 61 b. That is, the second guide 62b is arranged in a direction orthogonal to the extending direction of the guide rail 61 in a direction in which the first guide 62a is rotated by 90 degrees. In addition, each second guide 62b is fixed to the second slider 32 via the second connecting member 52. In addition, for example, a plurality of second guides 62b are provided for one second guide rail 61 b. In the present embodiment, two second guides 62b are provided for one second guide rail 61b, one of which is fixed to the upper end portion of the second slider 32 and the other of which is fixed to the lower end portion of the second slider 32.

The pressing device 14 is configured to be able to press the slider 12 in the moving direction. In the present embodiment, the pressing device 14 presses the slider 12 in the direction of gravity. The pressing device 14 is configured to be able to press the first slider 31 and the second slider 32 individually, for example. The pressing device 14 includes, for example, a pressing portion 91 and a connecting portion 92. The pressing device 14 is, for example, a press machine of a so-called crank mechanism.

The pressing portion 91 is configured to be able to press the connecting portion 92 in one direction. Specifically, the pressurizing unit 91 rotates the crankshaft by the power source and reciprocates the crankshaft in one direction. The pressurizing unit 91 transmits the reciprocating movement of the crank to the connecting unit 92.

The connecting portion 92 is formed in a rectangular column shape extending in the moving direction of the slider 12, for example. One end of the connecting portion 92 is connected to the pressing portion 91, and the other end is fixed to the slider 12. For example, a pair of connecting portions 92 is fixed to the upper surface of the first slider 31. The connecting portions 92 pass through the two holes 41a provided in the first slider 31, for example, and the pair of connecting portions 92 is fixed to the second slider 32. The connecting portion 92 transmits pressure in one direction to the first slider 31 and the second slider 32 by reciprocating in one direction by the pressurizing portion 91.

The pressing device 14 is constituted by, for example, a crank that transmits power to the connecting portion 92 fixed to the first slider 31 and a crank that transmits power to the connecting portion 92 fixed to the second slider 32, and phase differences are provided between the reciprocal movements of the cranks. The pressurizing device 14 causes a phase difference in the reciprocating motion of the first slider 31 and the second slider 32.

The auxiliary pressurizing device 15 is configured to press the first slider 31 and the second slider 32 in the moving direction, respectively. In the present embodiment, the auxiliary pressurizing device 15 is configured to be able to press the first slider 31 and the second slider 32 upward in the direction of gravity. The auxiliary pressurizing device 15 includes, for example, an air cylinder and a supply unit that supplies air to the air cylinder. As shown in fig. 1, the auxiliary pressurizing means 15 is provided on the first slider 31 and the second slider 32, respectively. Here, the plurality of auxiliary pressurizing means 15 are provided symmetrically with respect to the central axis of the first slider 31 or the second slider 32. The plurality of auxiliary pressurizing devices 15 provided in the first slider 31 are configured to be capable of applying a pressing force at least equal to the weight of the first slider 31 to the first slider 31 by, for example, air pressure supplied to an air cylinder. The plurality of auxiliary pressurizing devices 15 provided in the second slider 32 are configured to be capable of applying a pressing force to the second slider 32 at least equal to the weight of the second slider 32 and the upper mold 16 provided in the second slider, for example, by using air pressure supplied to an air cylinder. Note that the pressing force applied to the first slider 31 and the second slider 32 by the auxiliary pressurizing device 15 may be appropriately set.

The upper die 16 and the lower die 17 are configured to be capable of molding the materials arranged therebetween by being pressed in one direction. The upper die 16 and the lower die 17 are configured to be used as one step of a drawing step for forming a cylindrical can body, for example

The upper die 16 is fixed to the second slide 32. The lower die 17 is disposed opposite to the upper die 16. For example, a plurality of lower molds 17 are provided on the conveying device 18.

The conveying device 18 is configured to be able to sequentially move the plurality of lower molds 17 to positions facing the upper molds 16. As shown in fig. 1 and 2, the conveying device 18 is configured to, for example, dispose a plurality of lower molds 17 at predetermined intervals in one direction and convey the plurality of lower molds 17 in one direction. Here, the predetermined interval is an interval at which each structure of the molding apparatus 1 does not interfere with another adjacent lower mold 17 when the upper mold 16 and the lower mold 17 are pressurized.

The control device 19 is configured to be able to control the operations of the pressurizing device 14, the auxiliary pressurizing device 15, and the conveying device 18. Specifically, the control device 19 controls, for example, the power source of the pressurizing device 14. The control device 19 controls, for example, a supply unit of the auxiliary pressurizing device 15. The control device 19 controls, for example, the feed amount of the transport device 18 and the feed timing of the transport device 18 corresponding to the operation of the pressure device 14.

An example of the operation of the molding device 1 for molding a material in the following steps will be described.

First, the controller 19 causes the first slide 31 and the second slide 32 to stand by at a position where the upper mold 16 is separated from the lower mold 17 by the pressing device 14. Here, the standby position of the first slider 31 and the second slider 32 is, for example, the uppermost position in the range of the guide movement of the pressing device 14 and the guide rail guide 13. In this state, the control device 19 conveys the lower mold 17 to a position opposed to the upper mold 16 fixed to the lower portion of the second slide 32 by the conveying device 18.

Next, the control device 19 drives the pressurizing device 14 to press the first slider 31 and the second slider 32 via the connecting portion 92, respectively. The first slider 31 and the second slider 32 that are pressed are guided by the rail guide 13 and move in one direction along the extending direction of the support column 22.

Here, the first slider 31 and the second slider 32 reciprocate with different phases, respectively. Specifically, when the pressing device 14 presses the first slider 31 and the second slider 32, the second slider 32 is pressed before pressing the first slider 31 due to, for example, a phase difference of the reciprocating motion of the pressing device 14. Thereby, the second slide 32 moves and presses the upper mold 16 toward the lower mold 17 with the upper surface thereof separated from the top plate 41 of the first slide 31.

Next, by moving the first slider 31 downward, the top plate portion 41 of the first slider 31 abuts on the second slider 32. By further pressing the first slider 31 in this state, the second slider is further pressed not only by the pressing device 14 but also by the top plate portion 41 of the first slider 31. Thereby, the pressing force of the upper mold 16 to the lower mold 17 increases.

In this way, the molding apparatus 1 molds the material by the upper mold 16 and the lower mold 17 by adding the pressing force of the pressing device 14 to the second slider 32 and the pressing force of the first slider 31 to the second slider 32.

Next, after the molding of the material disposed in the lower mold 17 is completed, the control device 19 moves the first slide 31 and the second slide 32 upward to separate the upper mold 16 from the lower mold 17. Here, the control device 19 controls the supply units of the auxiliary pressurizing devices 15 provided on the first slider 31 and the second slider 32 to supply air to the cylinders, respectively. The auxiliary pressurizing device 15 assists the upward movement of the first slider 31 and the second slider 32 by applying upward pressing forces in the gravity direction to the first slider 31 and the second slider 32, respectively, by the air pressure supplied to the air cylinder.

Next, the controller 19 conveys the other lower mold 17 arranged beside to a position opposed to the upper mold 16 by the conveyor 18. Then, the control device 19 molds the material again in the above-described order.

According to the molding apparatus 1 configured as described above, the first slider 31 and the second slider 32 are guided by the rail guide 13 to move in one direction. Here, in the guide rail guide 13, since the guide 62 is guided by rotating with respect to the guide rail 61, the frictional resistance generated when the first slider 31 and the second slider 32 move can be reduced. Therefore, the molding apparatus 1 can reduce the loss generated when the first slider 31 and the second slider 32 move, and therefore can increase the moving speed of the first slider 31 and the second slider 32. This enables the molding apparatus 1 to improve productivity.

In the molding apparatus 1, since the support columns 22 are supported by different side surfaces, the interval between the support columns 22 and the support positions of the first slider 31 and the second slider 32 can be made as small as possible. This reduces displacement of the respective structures due to a load generated during molding, and improves durability of the molding apparatus 1. In the molding apparatus 1, since the guide rail 61 and the guide 62 are easily disassembled and assembled, the maintenance property can be improved.

In the molding apparatus 1, each of the pillars 22 is formed in a shape in which the first side surface 22a and the second side surface 22b are orthogonal to each other, and two adjacent pillars 22 are arranged so that the first side surfaces 22a and the second side surfaces 22b face each other. Accordingly, since the respective components of the molding device 1 are provided so as to be orthogonal to the moving direction of the slider 12, the rigidity against the load generated at the time of molding can be improved. Further, since the first side surface 22a and the second side surface 22b of the support column 22 can be used as a reference, positioning of the respective components of the molding apparatus 1 becomes easy, and workability of installation and maintenance can be improved.

The molding apparatus 1 is configured such that the interval between the first side surfaces 22a of the pillars 22 is larger than the interval between the second side surfaces 22 b. That is, the interval at which the second slider 32 is supported by the support column 22 is smaller than the interval at which the first slider 31 is supported by the support column 22. This can increase the rigidity of the second slider 32 that receives a larger load during molding than the first slider 31.

In the molding apparatus 1, a plurality of first guides 62a and second guides 62b are provided for one first rail 61a or one second rail 61b, respectively. Accordingly, since the load generated during molding is received by the plurality of guides 62 for each guide rail 61, the displacement generated in each guide 62 and the first and

second connection members

43 and 52 connected to each guide 62 can be reduced.

As described above, according to the molding apparatus 1 of one embodiment of the present invention, productivity, durability, and maintainability can be improved.

The present invention is not limited to the above embodiment. For example, the shape of the horizontal cross section of the support column 22 may be appropriately set as long as the guide rail 61 of the guide rail guide 13 can be provided. For example, the support column 22 may have a polygonal shape other than a rectangular shape in a horizontal cross section. The support column 22 may have a circular cross section in the horizontal direction. When the cross section in the horizontal direction is formed in a circular shape, the first side surface 22a and the second side surface 22b are the same surface in the pillar 22. At this time, a part of the side surfaces of the support column 22 constitutes a first side surface 22a, and the other part shifted by a predetermined angular phase in the circumferential direction constitutes a second side surface 22 b. However, from the viewpoint of improvement in rigidity of the slider 12 and ease of positioning and installation of the slider 12 and the rail guide 13, the support column 22 is preferably formed in a rectangular shape in a horizontal cross section.

In the present embodiment, the guide rail 61 is provided on the support column 22 and the guide 62 is provided on the slider 12, but the present invention is not limited to this. The guide 62 may be provided on the pillar 22 and the guide rail 61 may be provided on the slider 12. However, in view of the ease of maintenance work, it is preferable to provide the guide rail 61 on the column 22 and the guide 62 on the slider 12 as in the above-described embodiment.

The present invention is not limited to the above embodiment, and various modifications can be made in the implementation stage without departing from the scope of the present invention. In addition, the respective embodiments may be appropriately combined and implemented within a possible range, and in this case, a combined effect can be obtained. In addition, the embodiments described above include various aspects of the invention, and various aspects of the invention can be extracted by appropriately combining a plurality of disclosed constituent elements.

Claims

1. A molding apparatus, comprising:

four pillars extending in one direction, arranged at four corners of the rectangular region, and having a first side surface and a second side surface;

a first slider disposed in the rectangular region and pressed by a pressing device;

a second slider pressed by at least one of the pressing device and the first slider;

a first guide rail provided on each of the first side surfaces and extending in the one direction;

a second guide rail provided on each of the second side surfaces and extending in the one direction;

a first guide member that is provided movably along the first guide rail on each of the first guide rails and is fixed to the first slider;

and a second guide member movably provided to each of the second guide rails along the second guide rail and fixed to the second slider.

2. The molding apparatus as defined in claim 1,

3. The molding apparatus as defined in claim 2,

4. The molding apparatus as defined in claim 1,

5. The molding apparatus as defined in claim 1, further comprising:

an upper die fixed to the second slide block;

and a lower mold disposed opposite to the upper mold.

6. The molding apparatus as defined in claim 5,

the lower die is provided with a plurality of lower dies,