JPH07276430A - Panel attaching structure for injection molding machine - Google Patents

Abstract

PURPOSE:To provide a panel attaching structure having excellent functions as a whole for problems of workability, safety, and required working space. CONSTITUTION:While a holding section 21 and a female screw 22 are provided at an injection molding machine body 5', a section to be held 28 and a male screw 25 having a lug 29 are provided at a panel 20. The panel 20 can be suspended and held by the holding section 21 through the section 28. Further, the bottom end of the panel 20 can be fixed easily to the injection molding machine body 5' by the male screw 25 arranged on the panel 20 rotatably and in an undetachable way. That is, the top end of the panel 20 is made to be detachable by a simple setting operation and the bottom end is fixed by the necessary least number of screws so as to heighten workability in attaching and detaching. Also, as the panel 20 is suspended and held by the holding section 21, supporting of the panel 20 by a worker himself in attaching/detaching the screws is eliminated, thereby facilitating the work. In addition, the male screw 25 is prevented from falling from the panel 20, so that a short circuit and an electric leak caused by invasion of foreign matters are prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a panel mounting structure for an injection molding machine, and more particularly to a panel mounting structure which is detachably attached.

[0002]

2. Description of the Related Art In order to facilitate adjustment and repair work for servo units, I / O boards, and high-power boards installed in injection molding machines, the injection molding machine body has openings for adjustment and repair work. Further, a panel is provided so as to cover the opening and protect the interior parts and ensure the safety of the operator in a normal injection molding operation. Of course, this panel is required to have a detachable function or an openable / closable function according to the necessity of adjustment and repair work.

FIG. 2 is a diagram illustrating a panel mounting structure in a conventional injection molding machine. In the case of this injection molding machine,
The injection molding machine body includes a panel 2 for covering an opening 1 provided in a storage unit such as a servo unit and an I / O board, and a panel 4 for covering an opening 3 provided in a storage unit such as a high-voltage electric board. 5 is attached.

Of these, a male screw 6 is rotatably loosely fitted in each of the through holes formed in the four corners of the panel 2, and the male screw 6 and the female screw provided in the four corners of the opening 2 are inserted. The panel 2 is detachably attached to the main body 5 of the injection molding machine through the above, but in the structure in which the panel is detachably attached to the main body of the injection molding machine using only the fixing screw as described above, It is desirable to use four or more screws for the sake of stability, and there is a drawback that it takes time to attach and detach the panel. In addition, there is a risk that the screw may be lost during the attachment / detachment work, and if the screw is accidentally dropped inside the injection molding machine, it may cause a short circuit or electric leakage.

The panel 4 covering the opening 3 is provided with a hinge 8 provided between the vertical spar 7 for fixing the upper spar 10 and the lower spar 11 of the injection molding machine body 5 and the hinge 8 provided between the panel 4 and the opening 3. It is mounted so as to be openable and closable with respect to and is fixed to the injection molding machine main body 5 by a locking means 9 provided at the swing side end portion thereof. According to such a structure, the panel can be opened only by unlocking the locking means 9, so that the trouble of attaching and detaching the screw and the loss thereof can be solved, but the panel can be pivoted around the hinge 8. Four
In order to open the door, a considerable working space is required in front of the main body 5 of the injection molding machine, and when the panel 4 cannot be completely attached and detached as is the case with most hinges, this panel 4 May interfere with adjustment and repair work.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned drawbacks of the prior art and to prevent short-circuits and electric leakage caused by dropping screws and the like at the time of detaching and adjusting and repairing the panel. An object of the present invention is to provide a panel mounting structure for an injection molding machine that balances the ease of panel attachment / detachment / separation work in a small work space, shortening of work time, and ensuring of work space during adjustment / repair work at a high level.

[0007]

According to the present invention, in a panel mounting structure for covering an opening on a side portion of an injection molding machine main body, an upper end of an outer peripheral portion of the opening is engaged with an upper end of the panel and the upper end of the panel is attached to the upper end. A locking portion that holds it detachably is provided, while a locked portion that is engaged and held by the locking portion is provided at the upper end of the panel, and the lower end of the panel is screwed to the lower end of the outer peripheral portion of the opening. The above-mentioned object is achieved by a structure characterized in that it is detachably attached by means of a joining member.

Further, as a more specific structure, a projecting piece that bends toward the outside of the opening is provided at the upper end of the outer peripheral portion of the opening to form a locking portion that detachably holds the upper end of the panel,
Correspondingly, the upper end of the panel is provided with a locked portion formed of a folded piece that is fitted and held from the outside of the base portion of the locking portion. Further, a female screw is provided at the lower end of the outer peripheral portion of the opening, and a lower end of the panel is attached to the lower end of the outer peripheral portion of the opening by screwing a male screw rotatably provided through the lower end of the panel. Make it detachable. A knob is formed on the head of the male screw to facilitate the screwing operation.

Further, a folded-back portion is formed at the lower end of the outer peripheral portion of the opening so as to overlap the outer peripheral portion with a predetermined gap, and a through hole larger than the screw diameter is formed at a position corresponding to the female screw. A small-diameter sleeve, which is installed around the base of the male screw, is guided to facilitate positioning between the panel and the opening, and the male screw can be easily screwed into the female screw. Further, the male screw is prevented from dropping from the panel by the small-diameter sleeve mounted around the base of the male screw.

[0010]

[Operation] The lower end of the panel is fixed to the lower end of the outer periphery of the opening by unscrewing the screwing member so that the lower end of the panel can be brought into and out of contact with the main body of the injection molding machine. The panel is removed from the main body of the injection molding machine by disengaging it from the locking part at the upper end of the opening.

Since the knob is formed on the head of the male screw which constitutes the screwing member for fixing the lower end of the panel to the lower end of the outer periphery of the opening, no special tools are required for releasing the screwing.
The lower end of the panel can be easily brought into and out of contact with the main body of the injection molding machine. The upper end of the panel is fixed to the outer circumference of the opening by engaging the locked part consisting of the folded piece with the protruding piece at the upper end of the opening, so it is very easy to release the engagement on the upper end side of the panel. Is. More specifically, since the protruding piece is a member that is bent outward from the upper end of the opening and extends upward to the front, as described above, the lower end of the panel can be contacted and separated from the main body of the injection molding machine. And then
The panel can be easily removed by pulling the male screw of the panel forward so that it does not interfere with the through hole formed in the folded portion at the lower end of the outer periphery of the opening and lifting the panel as it is. That is, it is not necessary to swing the panel largely, the panel can be removed in a narrow working space, and the panel is completely separated from the injection molding machine body. As you can see, the panel does not get in the way when adjusting and repairing interior parts. Further, since the male screw of the panel is prevented from falling off by the sleeve mounted around the base portion thereof, there is no possibility that the screw will be detached from the panel and fall into the power source unit or the like inside the injection molding machine.

On the other hand, when the panel is mounted and the opening is closed, after the locked portion at the upper end of the panel is engaged with and held by the locking portion at the upper end of the opening, the lower end of the panel is opened by the screwing member. Secure to the bottom of the section.

The locked portion at the upper end of the panel is a folded piece, and the locked portion at the upper end of the opening is a protruding piece that bends toward the outside of the opening. The upper end of the panel is engaged and held at the upper end of the opening by engaging the locked part from the outside of the base of the locking part by covering the locking part at the upper end of the opening from above. As a result of the folded piece forming the locked portion of the panel engaging with the base of the locking portion at the upper end of the opening, that is, the rising portion of the protruding piece extending upward from the opening toward the front, the panel is directly in front. The upper end of the panel does not come off from the locking part even if it is pulled in. This is because the folded piece of the panel is caught by the bent portion of the protruding piece and is restrained. In this way, as a result of the panel being suspended from the locked portion at the upper end of the opening via the locked portion, the vertical position of the panel with respect to the opening is determined. In this state, lateral movement of the panel with respect to the opening and some swinging are allowed. Therefore, pull the lower end of the panel forward to some extent, and insert a male screw protruding inward from the lower end of the panel into the through hole of the folded portion formed so as to overlap with the lower end of the opening outer periphery at a predetermined interval. Insert and move the panel left and right to position the panel at the position where the sleeve of the male screw base is inserted into the through hole, and align the tip of the male screw with the position of the male screw at the lower end of the opening to make the male screw head. The knob is gripped and rotated, and the male screw and the female screw are screwed together to fix the lower end of the panel to the lower end of the opening. After the locked part at the top of the panel is engaged and held by the locking part at the top of the opening, the weight of the entire panel is supported by the locking part at the top of the opening. There is no need for a person to support the panel during the joint operation, and the work is easy. As in the case of removal work, the panel can be installed in a small work space. The lower end of the panel is fixed by screwing the male screw on the panel side with the female screw on the opening side.As a result, the panel is prevented from shifting upwards and laterally, and the panel shifts forward and downward. Is prevented by the engagement of the male screw and the female screw and the engagement relationship between the locking portion and the locked portion described above, and the upper and lower ends of the panel are fixed by these fixing means, resulting in a sufficient mounting as a whole. The strength is secured.

[0014]

1 is an explanatory view showing an outline of a panel mounting structure in one embodiment, and FIG. 1 (b) is a side sectional view showing a panel 20 to which the present invention is applied mounted on an injection molding machine body 5 '. 1 (a) shows a panel 20 from the main body 5'of the injection molding machine.
FIG. 1C is a front view showing the main part of the injection molding machine main body 5 ′ with the panel 2 removed from the injection molding machine main body 5 ′.
It is a rear view which shows 0 as seen from the back side.

As for the main body 5'of the injection molding machine, the upper spar 10 'of the main body 5'is provided with the engaging portion 21, and the lower spar 11' is provided with the female screw 22 and the folded portion 23. 2 is substantially the same as the injection molding machine main body 5 shown in FIG. Therefore, in this panel mounting structure, for example, the upper spar 10 and the lower spar 11 of the injection molding machine main body 5 as shown in FIG. 10 'and the lower spar 11' are replaced, and at the same time, the panel 2 and the panel 4 as shown in FIG. 2 are replaced with the panel 2 as shown in FIGS. 1 (b) and 1 (c).
By replacing with 0, it can be arbitrarily applied as a panel mounting structure for closing the openings 1 and 3.

The panel mounting structure of the embodiment will be described in detail below with reference to FIG. First, as shown in FIG. 1 between the upper spar 10 'and the lower spar 11' of the injection molding machine body 5 '.
With the opening 24 formed as shown in FIGS. 1A and 1B and the panel 20 removed, interior parts of the injection molding machine main body 5 ', such as a servo unit, an I / O board, and a high voltage electric machine, are provided. Adjustment and repair work for the board etc. can be freely performed, and the upper end of the outer peripheral portion of the opening 24,
That is, the upper spar 10 'of the main body 5'of the injection molding machine is provided with a locking portion 21 that engages with the upper end of the panel 20 and holds it detachably. The locking portion 21 is the upper spar 1.
0'is a projecting piece that projects and bends toward the outside of the opening 24. Based on FIG. 1 (a), which is a front view,
It is a projecting piece that extends toward the upper side as a whole. Strictly speaking, the locking portion 21 has its base portion 21.
At a, it rises substantially at right angles to the surface of the opening 24, and at the tip thereof, it is bent toward the outside of the opening 24, that is, toward the front upper side with reference to FIG.

The lower end of the outer peripheral portion of the opening 24, that is,
A panel 20 is provided on the lower spar 11 'of the injection molding machine body 5'.
A female screw 22 for screwing a male screw 25 which is a screwing member attached to the side is screwed, and the female screw 22 constitutes a screwing member on the lower end side of the outer peripheral portion of the opening 24. In this embodiment, the female screw 22 is integrally formed with the lower spar 11 'by tapping or the like, but a sleeve or a nut, etc., in which the female screw is threaded, is embedded in the lower spar 11' and fixed appropriately by welding or the like. By doing so, the female screw 22 may be provided. And on the lower spar 11 ',
Further, the folded-back portion 23 is integrally superposed and disposed at a predetermined distance from the lower end of the outer peripheral portion of the opening 24 which is the female screw provision surface. The folded-back portion 23 may be formed integrally with the lower spar 11 'by plastic working, or may be provided by welding a steel material having an L-shaped cross section by post-processing. Further, a through hole 26 having a diameter larger than the screw diameter is formed in the folded-back portion 23 in correspondence with the female screw placement position of the lower spar 11 '. A sleeve 27 fixed to the back surface of the panel 20 and attached to the male screw 25 needs to be inserted into the through hole 26, and the diameter thereof needs to be slightly larger than the sleeve 27.

In the embodiment, the engaging portion 21 and the folded portion 23 are provided over substantially the entire width of the opening 24, and the female screw 22 of the lower spar 11 'and the through hole 26 of the folded portion 23 respectively have the respective portions. One pair is provided at an appropriate position below the opening 24, for example, at both ends below the opening 24.

On the other hand, the upper end of the panel 20 is provided with a locked portion 28 which is engaged and held by the locking portion 21 on the injection molding machine body 5'side, and the lower end of the panel 20 is provided with the above-mentioned male screw 25. Is rotatably arranged through.

The locked portion 28 is a folded piece formed by bending a sheet metal material constituting the panel 20 by press working or the like, and is a synthetic frame formed along the contour of the panel 20 into a rectangular frame as a whole. The upper edge of the gasket 30 made of rubber or the like is attached. The gasket 30 is the panel 20
As shown in FIG. 1 (c), along the outer periphery of the surface facing the injection molding machine body 5'in FIG. 1, from the nipple for cooling water or the like provided in the mold provided over the entire circumference. The leaked water is sewn between the panel 20 and the opening 24 to prevent it from entering the inside of the injection molding machine body 5 '. The gasket 30 is made of a hollow member having a columnar space in the center thereof, is easily deformed in the thickness direction, and is firmly attached to an object. According to the configuration example of FIG. 1B, the front end of the locked portion 28 must be engaged with the base portion 21a of the locking portion 21 because the panel 20 needs to be positioned in the front-rear direction. The vertical length of 28 must be equal to or longer than the vertical length of the locking portion 21.

On the other hand, the male screw 25 having a knob 29 integrally formed on its head is used as the lower spar 1 on the injection molding machine body 5'side.
1'is rotatably penetrated through the lower end of the panel 20 in correspondence with the female screw deployment position and the through hole drilling position of the folded portion 23, and the through hole 26 of the folded portion 23 is provided on the back surface of the lower end portion of the panel 20. A sleeve 27 having a slightly smaller diameter than the above is fixed. The sleeve 27 is formed of a nut having a screw diameter corresponding to the female screw 22, or a cylindrical body having a female screw corresponding to the female screw 22 engraved on the inner peripheral surface thereof. It is fixed by means such as welding. The male screw 25 has an effective screw portion that can be screwed into the female screw 22 and the female screw of the sleeve 27 only at its tip end, and the diameter of the male screw 25 is reduced to a root diameter of the effective screw portion or less at the base of the knob 29 side. The formed small diameter portion is formed to prevent interference with the inner peripheral surface of the sleeve 27. The length of the reduced diameter portion of the male screw 25 is equal to or longer than that of the sleeve 27 in the axial direction. The male screw 25 is screwed into the sleeve 27 from the front side of the panel 20 and once screwed into the female screw of the sleeve 27. After that, when the effective screw portion of the tip portion passes through the sleeve 27, the male screw 25 becomes the inner peripheral surface of the sleeve 27. It is rotatably held with respect to the panel 20 by the sleeve 27 with a certain gap between the knob 29 and the base. Knob 2 as it is
Even if the male screw 25 is pulled while holding the screw 9, the female screw of the sleeve 27 and the ridge of the effective screw portion of the male screw 25 interfere with each other and act as a retaining member, so that the male screw 25 does not fall out accidentally. . If the outer peripheral portion of the tip of the sleeve 27 is chamfered or the like to form an appropriate cone shape,
The positioning work of the male screw 25, which is required during the mounting work described later, can be performed more smoothly.

Further, since the sleeve 27 also serves as a positioning means for the male screw 25 when the panel 20 is mounted on the injection molding machine body 5 ', the length of the effective screw portion of the male screw 25 is the lower spar 11. ′ Female screw deployment surface and folded portion 23
It is desirable to set it so that it is shorter than the gap between and and the total length of the sleeve 27 itself is not longer than this gap. When the length of the effective screw portion of the male screw 25 becomes longer than the gap between the female screw disposing surface of the lower spar 11 ′ and the folded portion 23, the male screw 25 is mounted when the panel 20 is mounted.
Of the sleeve 27 serving as a positioning guide because the tip of the male screw 25 abuts on the female screw deploying surface of the lower spar 11 'before the tip of the sleeve 27 that serves as a guide hits the folded-back portion 23 when the screw is inserted into the through hole 26. If the total length of the sleeve 27 itself becomes longer than the above-mentioned gap, the lower end portion of the panel 20 remains floating with respect to the folded-back portion 23 and the male screw 25 and the female screw 22. This is because the screwing with and is completed, and a sufficient pressure contact force cannot be applied to the gasket 30. However, the lower end of the panel 20 is not fixed by pressing the lower end of the panel 20 against the folded-back portion 23, but from the beginning, the lower end of the panel 20 and the female screw of the lower spar 11 'are provided by the entire length of the sleeve 27. The distance between the panel and the surface is defined, and the male screw 25 is screwed into the female screw 22 until the rotation of the male screw 25 stops, and the tip of the sleeve 27 is pressed against the female screw deploying surface of the lower spar 11 '. If there is a design concept of fixing the lower end portion of 20, it is not necessary to be bound by the latter requirement of the above conditions. It should be noted that this design concept is valid, and if the distance between the lower end of the panel 20 and the female screw deployment surface of the lower spar 11 'is defined by the total length of the sleeve 27, the tip of the sleeve 27 will be The sleeve 27 functions as a spacer by being pressed against the female screw disposing surface of the lower spar 11 ', thereby preventing the lower end of the panel 20 from rattling in the front-rear direction.
Further, rattling in the vertical and horizontal directions of the panel 20 can be prevented by fitting the sleeve 27 and the through hole 26 of the folded portion 23.

The shape of the lower folded portion of the panel 20 is arbitrary as long as it does not interfere with the folded portion 23 on the side of the lower spar 11 ', but in the configuration illustrated in FIG. 1 (b), the locked portion 28 at the upper end of the panel 20 is used. Of the lower folding portion of the panel 20 so that the lower folding portion of the panel 20 does not interfere with the edge of the folding portion 23 when the edge of the panel 20 is locked to the base portion 21a of the locking portion 21 and the panel 20 is swung forward. Shape and dimensions need to be determined.

Hereinafter, a practical work for attaching and detaching the panel 20 will be described based on the above-mentioned configuration. For convenience of explanation, it is assumed that the panel 20 is already mounted on the injection molding machine main body 5'as shown in FIG. 1B, and the work process will be described in the order of removal and mounting.

First, when the panel 20 is removed from the main body 5'of the injection molding machine and the opening 24 is opened, the operator grips the knob 29 of the male screw 25 and releases the male screw 25 in the direction to release the screwing. Rotate and remove the male screw 25 from the female screw 22 provided on the lower spar 11 'of the injection molding machine body 5'.

When all the deployed male screws 25 are unscrewed, the panel 20 is suspended from the engaged portion 28 by the engaging portion 21 of the upper spar 10 ′, and the panel 20 is suspended. Since it is in a swingable state, the operator holds the panel 20 at an appropriate position, and at least until the tip of the male screw 25 is completely removed from the through hole 26 of the folded portion 23.
0 is rocked toward you, and the lower end of the panel 20 is folded back to the folding part 23.
Then, it is lifted as it is, the locked portion 28 of the panel 20 is released from the locking portion 21 of the upper spar 10 ', and the panel 20 is separated from the injection molding machine body 5'and removed.

Therefore, the work space required for removing the panel 20 may be small, and except for the space occupied by the worker, the work space is the panel 2 in the mounted state.
With reference to the board surface 20a at 0, a male screw 2
5 and the length of the locking portion 21 in the vertical direction above the upper end of the mounted panel 20 as a reference.

Further, since the male screw 25 does not fall off from the panel 20 during the work, foreign matter is prevented from entering the inside of the injection molding machine main body 5 ', and accidents such as short circuit and electric leakage are prevented in advance. Since the panel 20 is suspended and held by the injection molding machine main body 5 ′ even after the unscrewing of the male screw 25 is completed, the operator must support the weight of the panel 20 to remove the screw. The inconvenience disappears.

Next, when the panel 20 is attached to the main body 5'of the injection molding machine to close the opening 24, the operator first grasps an appropriate position of the removed panel 20 and lifts it to open it. The upper side of the panel 20 is set to the upper spar 1 by appropriately observing the lateral position of the panel 20 with respect to the portion 24.
The locked portion 28 of the panel 20 is engaged with the base portion 21a of the locking portion 21 of the upper spar 10 'from above while elastically deforming the gasket 30 by pressing it against 0'. Then, the panel 20 is automatically positioned in the vertical direction with respect to the opening 24 by the engagement of the locked portion 28 and the locked portion 21, and the locking portion 21 and the locked portion 2 are also positioned.
By the engagement with 8, the movement of the panel 20 in the front-rear direction other than the swinging motion is restrained, and at the same time, the gasket 30 is appropriately elastically deformed so that the gasket 20 is pressed between the upper end of the panel 20 and the outer peripheral portion of the opening 24. Thus, at least the waterproof function of the upper portion of the opening 24 is secured.

The inner diameter of the through hole 26 formed in the folded-back portion 23 of the lower spar 11 'is adapted to the diameter of the sleeve 27, which is considerably larger than the diameter of the effective thread portion of the male screw 25. Since it is large, the tip of the male screw 25 should naturally rush into the through hole 26 of the folded portion 23 at this time if the lateral parting judgment at the time of the engaging work is appropriately performed. The tip of the male screw 25 is the through hole 2
If not, the operator slides the panel 20 suspended and held by the locking portion 21 in the right-left direction and swings the tip of the male screw 25 into the through hole 26. To do. Since the center of gravity of the panel 20 is located on the left side in FIG. 1B with reference to the tip of the locked portion 28, the locked portion 2
In the panel 20 in which the tip end of 8 is swingably suspended and held by the engaging portion 21, the tip end of the engaged portion 28 is centered in FIG.
In (b), a counterclockwise moment acts and the panel 20
When swinging in the left-right direction, the tip of the male screw 25 is naturally pressed against the folded-back portion 23. Therefore, when the tip of the male screw 25 coincides with the position of the through hole 26 when the panel 20 is swung as described above, the panel 20 automatically swings in the counterclockwise direction and the tip of the male screw 25. Will rush into the through hole 26. Whether or not the tip of the male screw 25 projects into the through hole 26 can be easily identified by observing how much the lower end of the panel 20 floats with respect to the lower spar 11 'and the like.

Therefore, if the tip of the male screw 25 is projected into the through hole 26, the operator further moves the panel 20 within a range permitted by the relationship between the outer diameter of the male screw 25 and the inner diameter of the through hole 26. The sleeve 27 fixed to the lower end of the panel 20 is fitted into the through-hole 26 by sliding it slightly in the left-right direction. Since the vertical positioning of the panel 20 with respect to the opening 24 has already been completed, the sleeve 27 should be easily fitted into the through hole 26 by sliding the panel 20 laterally. The fit of the sleeve 27 with respect to the through hole 26 is considerably severe as compared with the above-described engaging relationship between the through hole 26 and the male screw 25, and the fitting is not always realized only by the moment of the panel 20. Therefore, if necessary, the operator can use the panel 20 with moderate force.
The above-mentioned sliding work is performed while pressing the board surface 20a of the above toward the main body 5'of the injection molding machine, and the sleeve 27 is securely fitted into the through hole 26. As described above, if the tip of the sleeve 27 has a proper cone shape, this positioning operation can be performed more easily.

If it is confirmed that the sleeve 27 is fitted into the through hole 26 and the axis of the male screw 25 coincides with the center of the female screw 22 threaded on the lower spar 11 ', the operator Hold the knob 29 of the male screw 25, and
While pressing the male screw 25, the male screw 25 is rotated in the direction in which the male screw 25 is screwed, and the lower spar 1 of the injection molding machine body 5'is rotated.
The male screw 25 is screwed into the female screw 22 provided in 1 ', and the lower end of the panel 20 is pressed against the folded-back portion 23 to be fixed.
At the same time, the gasket 30 is attached to the lower end of the panel 20 and the opening 2.
It is properly clamped between the outer peripheral portion of 4 and the outer peripheral portion of 4, and functions as a waterproof gasket over the entire periphery. Further, the lower end portion of the panel 20 is pressed against the folded-back portion 23 so that the panel 20
Instead of fixing the lower end part of the sleeve 27, the length of the sleeve 27 is fixed to define the distance between the lower end part of the panel 20 and the female screw disposing surface of the lower spar 11 'to fix the panel 20. The rotation of the male screw 25 is stopped when the tip of the male screw 25 is pressed against the female screw deploying surface of the lower spar 11 '.
The gasket 30 is pressed between the two. In this case, the lower end portion of the panel 20 is fixed to the lower spar 11 'of the injection molding machine body 5'through the sleeve 27 as a spacer by screwing the male screw 25 and the female screw 22 together.

When mounting the panel 20, it is necessary to shake the panel 20 laterally to some extent, but the working space required for the mounting work is almost the same as that for the mounting work. Further, once the locked portion 28 of the panel 20 is engaged with the locking portion 21 of the upper spar 10 ', the panel 20 becomes the injection molding machine body 5'.
Since it will be suspended and held on the panel as it is, the panel 20
This eliminates the inconvenience that the operator has to screw in the male screw 25 while supporting the weight. The upward and lateral shifts of the panel 20 are prevented by fitting the sleeve 27 into the through hole 26, and the forward and backward shifts of the panel 20 are locked by the locked portion 28 at the upper portion thereof.
It is prevented by the engaging relationship between the locking portion 21 and the engaging portion 21 and the engaging relationship between the knob 29 and the folded portion 23 for fixing the lower portion thereof or the knob 29 and the sleeve 27, so that the mounting strength as a whole is required. It is enough.

Comparing the panel mounting structure of this embodiment with the conventional panel 2 mounting structure as shown in FIG. 2, the working structure, working time and labor required for removing and installing the panel are In terms of safety against loss or short circuit or leakage that may occur with it,
The required work space is the same, and in comparison with the conventional panel 4 mounting structure shown in FIG. 2, the working time and labor required to remove and attach the panel are inferior (however, , Panel 4 cannot be completely removed with the mounting structure of panel 4), it is equivalent in terms of safety, and the work space required for removing and attaching the panel and the adjustment and repair work that is deployed after the removal is easy. Significantly superior in terms of sex. Therefore, in the panel mounting structure of the present embodiment, it can be said that the advantages and disadvantages of the conventional technique as described above are strengthened or eliminated as a whole without any excess or deficiency, and are balanced in a high dimension.

[0035]

According to the panel mounting structure of the injection molding machine of the present invention, the lower end of the panel is detachable from the main body of the injection molding machine by unscrewing the screwing member fixing the lower end of the panel. The panel can be easily removed simply by disengaging the locked part at the top of the panel from the locking part on the injection molding machine side. Since the panel can be easily attached by simply engaging and holding it on the side locking portion and fixing the lower end of the panel by the screwing member, it is possible to easily complete the detaching work of the panel within a short time.

Further, since the knob is formed on the head of the male screw which constitutes the screwing member for fixing the lower end of the panel, no special tools are required for releasing the screwing, and when removing the panel, The lower end can be easily brought into and out of contact with the main body of the injection molding machine, and moreover, the upper end of the panel is formed by covering the protruding piece on the injection molding machine side with the locked portion formed by the folded back piece. Since it is only engaged and fixed, the panel can be easily separated and removed only by raising the panel as it is so that the lower end of the panel can be contacted and separated from the main body of the injection molding machine. As a result, the panel can be installed and removed in a narrow work space without swinging the panel significantly, unlike the conventional product that uses a hinge as a mounting means, and the panel is completely separated from the injection molding machine body. As a result, the panel does not become a hindrance during the adjustment and repair work of the interior parts of the injection molding machine body, unlike those using a mounting means such as a hinge that is difficult to separate. Since the male screw of the panel is prevented from falling off by the sleeve that is attached to the base of the male screw, the screw does not detach from the panel and fall into the power supply unit inside the injection molding machine. Is prevented from occurring.

Further, when the panel is mounted and the opening is closed, the upper end of the panel can be secured by simply covering the upper end of the panel with the locked part from above and engaging with the locking part on the injection molding machine side. Since it is suspended and held by engaging with the locking part on the injection molding machine side,
Unlike the conventional screw-fastened panel, it is not necessary for the operator to bear the load of the panel until the screwing work is completed, and the labor required for the mounting work is reduced. Also, in screwing work, the axis of the male screw on the panel and the center of the female screw on the injection molding machine side can be simply adjusted by moving the panel left and right and inserting the sleeve located at the base of the male screw into the through hole. Even if you cannot see the screw holes on the injection molding machine side, you can surely match the male and female screws by simply gripping the knob of the male screw and rotating it. The lower end of can be fixed.

[Brief description of drawings]

FIG. 1 is a diagram illustrating a panel mounting structure according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating a conventional example of a panel mounting structure.

[Explanation of symbols]

 1 Opening 2 Panel 3 Opening 4 Panel 5 Injection Molding Machine Main Body 6 Male Screw 7 Vertical Spar 8 Hinge 9 Locking Means 10 Upper Spar 10 'Upper Spar 11 Lower Spar 11' Lower Spar 20 Panel 21 Locking Part 21a Base 22 Female Screw 23 Folding part 24 Opening part 25 Male screw 26 Through hole 27 Sleeve 28 Locked part 29 Knob 30 Gasket

Claims (2)

[Claims] 1. A mounting structure for a panel covering an opening on a side of an injection molding machine main body, wherein a locking portion engages with an upper end of an outer peripheral portion of the opening to detachably retain the upper end of the panel. On the other hand, a locked portion that is engaged and held by the locking portion is provided on the upper end of the panel, and the lower end of the panel is removably attached to the lower end of the outer peripheral portion of the opening by a screw member. The panel mounting structure of the injection molding machine characterized by the above. 2. A panel mounting structure for covering an opening in a side portion of an injection molding machine main body, wherein a locking portion formed of a projecting piece bent toward the outside of the opening is provided at an upper end of an outer peripheral portion of the opening, A locked portion, which is a folded piece that is fitted and held from the outside to the base of the locking portion, is provided at the upper end of the panel, and the lower end of the outer peripheral portion is screwed with a male screw on the panel side. Forming a folded portion that overlaps outward with a predetermined gap between the female screw and the outer peripheral portion, and a through hole larger than the screw diameter is formed at a position corresponding to the female screw in the folded portion, A male screw having a knob formed on the head is rotatably provided at the lower end of the panel, and a sleeve having a diameter smaller than the through hole is attached to the base of the male screw to serve as a male screw retaining means. Together with the means for positioning between the panel and the opening Characteristic injection molding machine panel mounting structure.