JPH06285740A - Container mouth machining device - Google Patents

Abstract

PURPOSE:To provide a clean machining environment by arranging a dust collective duct communicating with the opening of a dust collective cover at the outer periphery track of the dust collective cover moving in a machining area. CONSTITUTION:An end mill 44 as an end face machining tool is encircled by a dust collective cover 45 at the lower part of which an opening 46 is located to encircle the rising portion of an opening/closing clamper. The opening 47 of a dust collective duct on the fixed side, arranged on the outer periphery track of the dust collective cover 45 moving in a machining area, communicates with the opening 48 of the dust collective cover 45 to give the suction effect of a dust collector on the dust collective cover 45. In this way, the dust collective cover 45 on the machining side performs, during transition in the machining area, dust collection via its opening 48 and the opening 47 of the dust collective duct on the fixed side and no direct connection exists between the moving side and the fixed side, so a simple structure is achieved without hindrance of the machining part in moving.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses a cutter to cut an unnecessary head formed in the upper part of the neck formed in the process of forming a container made of synthetic resin, and then finishes the end face of the mouth of the container. TECHNICAL FIELD The present invention relates to a container mouth processing apparatus suitable for processing shavings due to processing, such as when accurately processing the height of a neck or the like.

[0002]

2. Description of the Related Art Conventionally, in the processing means for processing the mouth of a container of this type, as a means for positioning and processing by utilizing a stepped portion such as a shoulder opening formed in the container, an elevator arranged above is used. Also, a rotatably driveable cutting head is fitted to the upper part of the container, and with the shoulder part of the container brought into contact with the shoulder contact part formed on the cutting head, the container is unnecessary by the cutter incorporated by its rotation. It is known that the head is cut and removed (Japanese Patent Publication No. 2-23316).

[0003]

However, in the above-mentioned prior art, since the cutting head incorporates not only the cutter and its operating mechanism but also the positioning and supporting mechanism of the container, the structure is extremely complicated and the cost is high. Not only is it attached, but the type of processing is limited, and it is difficult to divert the end face of the mouth to processing. In addition, since it is difficult to remove dust, it is not suitable for processing that produces shavings.
The object of the present invention has been made in view of such circumstances, and can be applied to various processing for the mouth of a container, and is not affected by variations in the molding of the container or variations in the dimensions of the holder. An object of the present invention is to provide a container mouth portion processing apparatus which can improve the processing accuracy and can also cope with processing such as finishing of the mouth portion end surface that causes shavings.

[0004]

In order to achieve the above object, the invention according to claim 1 relates to a container transfer mechanism, and a neck support that moves in synchronization with the transfer mechanism and supports the neck of the container. A mechanism and a processing tool such as an end mill that is disposed above the neck support mechanism and that processes the mouth of the container that projects upward from the neck support mechanism. A dust collecting duct, which is provided with a cover and which communicates with the opening of the dust collecting cover, is provided on the outer peripheral portion of the path of the dust collecting cover that moves in the processing area. It is characterized in that dust such as shavings generated by the processing is sucked by a dust collector through the duct. Further, in the invention according to claim 2, the transfer mechanism of the container is provided with a biasing means for biasing the container upward, and the neck support mechanism is brought into contact with an upper surface of an appropriate step portion formed in the container. It is characterized by supporting and processing the said container by doing.

[0005]

In the present invention, the neck portion of the container is surely supported by the neck portion supporting mechanism, which facilitates processing. Further, since dust such as shavings generated by the processing is easily removed by the dust collecting facility, it is possible to deal with various types of processing that generate shavings. In that case, as a dust collecting facility, only the opening is provided on the side of the dust collecting cover that is provided around the processing tool, and there is no part that is directly connected to the fixed side on the outside. There is no hindrance to and extremely smooth movement can be performed. Further, since the step portion of the container is processed by being pressed and positioned by the neck support mechanism, the step portion formed on the container is not affected by the variation in the molding of the container and the variation in the dimension of the holder. Since the processing is performed based on the part, the processing accuracy is improved.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing a layout of an application example of the present invention. In the figure, 1 is an unnecessary head excision device, and 2 is a mouth end face processing device for finishing the cut surface, which is an example of a container mouth processing device according to the present invention, and each is connected via an intermediate star wheel 3. Has been done. Introduced into unnecessary head excision device 1 Conveyor 5 via star wheel 4
The container 6 conveyed while being accommodated in the carrier is introduced in the accommodated state. After the unnecessary head is cut off by the cutter 7 arranged in the transfer path of the container in the unnecessary head excision device 1, the introduced synthetic resin container 6 is moved to the intermediate star wheel 3 as described later. And is transferred to the mouth end face processing device 2. In the mouth end face processing device 2, the cut surface of the container 6 is finished by an end face processing tool such as an end mill to be described later, and the finished product is conveyed to the conveyor 9 via the discharging star wheel 8. In the figure, 10 is a chute for discharging unnecessary heads remaining after cutting, 11 and 12 are dust collectors, 13 to 15 are dust collection ducts,
Reference numerals 16 respectively denote storage units for rejecting the container being processed at the time of emergency stop.

FIG. 2 is a vertical cross-sectional view showing the main part of the mouth end face processing apparatus 2. In the figure, reference numeral 17 denotes a cylindrical fixed main shaft, and a rotary shaft cylinder 18 which is rotationally driven by a drive means (not shown) is loosely fitted to the outer side of the fixed main shaft 17.
Rotation supports 19 and 20 are fixed to the rotary shaft cylinder 18. On the lower rotary support 19, a predetermined number of mounting portions 21 having a biasing means described later are provided. The container 6 introduced through the introduction star wheel 4 is a carrier 22.
In the state of being accommodated in the above, they are sequentially placed on the placing portion 21 and transferred. FIG. 3 is a plan view showing an arrangement state of the mounting portion 21. The carrier 22 is placed on an elevating table 23 arranged in the center of each placing part 21 and biased upward, and is transported while being supported by a supporting member 24 in the front and rear. In this way, the container 6 is urged and transferred upward.
As shown in FIG. 2, a stepped portion 6b formed at a lower end portion of an upper neck portion 6a has an opening / closing clamp piece 2 of a neck portion supporting mechanism 25 described later.
Positioning is carried out by contacting 6 and stopping its rise. In addition, the upper rotary support 20
In the unnecessary head excision device 1, a processing mechanism 27 having a built-in end mill for finishing the cut surface after cutting the unnecessary head, which is originally unnecessary for the container formed in the molding process of the container 6, is moved up and down. It is supported freely. In the figure, 28 indicates an opening / closing drive shaft of the opening / closing clamp piece 26 of the neck support mechanism 25.

Next, the urging means for the lift 23 will be described. As shown in FIG. 4, a piston 29 constituting an upward biasing means is disposed below the lift table 23. Pressure air is supplied to the pressure chamber 30 below the piston 29 through the supply pipe 31, and the pressure causes the lift 23 to be urged upward. Thereby, the container 6 is
As described above, the stepped portion 6b formed at the lower end portion of the neck portion 6a comes into contact with the opening / closing sandwiching piece 26 of the neck portion supporting mechanism 25 to stop its rising, whereby the positioning is performed. The upward bias is controlled via a control valve mechanism (not shown) connected to the supply pipe 31, and the container 6
In the vicinity of the introduction part and the discharge part, the supply of the pressurized air is stopped and the upward urging is stopped.

Next, the neck support mechanism 25 will be described. FIG. 5 is a plan view showing the neck support mechanism 25, and FIG. 6 is a vertical sectional view thereof. As shown in FIG. 5, the neck support mechanism 25 is composed of an appropriate number of open / close clamp pieces 26 arranged around the apparatus. Each of the open / close sandwiching pieces 26 is composed of a pair of open / close sandwiching pieces 26a and 26b, and is configured to repeat the open / close operation according to the rotation angle of the rotary shaft cylinder 18. Each of the open / close clamp pieces 26a,
As shown in FIG. 6, the neck portion 6 of the container 6 is attached to the tip portion of 26b.
A semicircular rising portion 32 matching the shape of a is formed. Also, the respective open / close clamp pieces 26a, 26b are
Open / close shafts 34a, 34 connected to the open / close drive shafts 28a, 28b constituting the open / close drive shaft 28 via a shaft coupling 33.
It is attached to the opening / closing bodies 35a and 35b fixed to the upper part of b. The lower portion of the opening / closing drive shaft 28 is rotatably supported by the rotary support 19 as shown in FIG. 4, and one of the opening / closing drive shafts 28a has a lower portion as shown in the bottom view of FIG. A drive lever 37 having a cam follower 36, an interlocking gear 38a, and a driven lever 39 are mounted.
Among them, the drive lever 37 is rotatably attached to the opening / closing drive shaft 28a, and the interlocking gear 38a and the driven lever 39 are fixed so as not to rotate. The drive lever 37 and the driven lever 39 are connected via a spring 40 in a state where they can be elastically buffered. Further, the interlocking gear 38a is provided below the other opening / closing drive shaft 28b.
A gear 38b that meshes with is fixed so as not to rotate. In the figure, 41 is a return spring attached to the opening / closing drive shaft 28b, and 42 is a cam plate. Note that FIG.
As shown in FIG. 4, the stopper member 4 located above the carrier 22 at the time of closing below the opening / closing bodies 35a and 35b.
The provision of 3 makes it possible to prevent the carrier 22 from dancing when the carrier 22 moves upward due to the urging force when the carrier 22 is empty.

However, when the cam follower 36 operates along the shape of the cam plate 42 based on the rotation of the rotary support 19, the rotation of the drive lever 37 is accompanied by the rotation of the spring 4.
It is transmitted to the driven lever 39 via 0. As a result, the opening / closing drive shaft 28a rotates, and at the same time, the opening / closing drive shaft 28b rotates in the opposite direction via the gears 38a and 38b. Along with this rotation, the opening / closing shafts 34a and 34b, respectively.
The opening and closing clamping pieces 26a and 26b are driven to be opened and closed via, and the neck portion 6a of the container 6 is clamped. The operation timing of the control of the supply of the compressed air to the pressure chamber 30 of the piston 29 which constitutes the urging means is the same as that of the opening / closing clamping piece 26.
When a and 26b are closed to some extent, pressure air is supplied to move the piston 29 upward to bring the stepped portion 6b of the container 6 into contact with the lower surfaces of the opening and closing clamping pieces 26a and 26b, and then further opening and closing clamping piece. The operation is good when the timing is set such that the neck portions 6a of the container 6 are clamped by the rising portions 32 of the closed portions 26a and 26b. This operation timing setting is
Control of supply of pressure air to the pressure chamber 30 and the cam plate 4
It goes without saying that it is performed depending on the relationship with the shape of 2.

As described above, the stepped portion 6b of the container 6 is opened and closed by the biasing means using the piston 29 and the like.
While pressing the lower surface of 6b, opening and closing clamping pieces 26a, 2
When the neck portion 6a of the container 6 is clamped by the rising portion 32 of 6b, the processing mechanism 27 having the built-in end mill descends in parallel with this and finishes the cut surface of the unnecessary head. FIG. 8 is a vertical cross-sectional view showing the end face processing state. The periphery of an end mill 44, which is a known end face processing tool, is surrounded by a dust collecting cover 45, and an opening 46 at the bottom thereof rises up the opening / closing clamping piece 26. It is located so as to surround the periphery of the portion 32. In the figure, as shown in FIG. 1, reference numeral 47 denotes an opening portion of the stationary side dust collecting ducts 14 and 15 arranged on the outer peripheral portion of the locus of the dust collecting cover 45 moving in the processing area. By communicating with the opening 48 of the dust collecting cover 45, the suction action of the dust collectors 11 and 12 is exerted inside the dust collecting cover 45. As described above, in the present dust collecting facility, the dust collecting cover 45 on the processing portion side collects dust through the opening portion 48 and the opening portions 47 of the stationary side dust collecting ducts 14 and 15 while passing through the processing region. However, since there is no part that directly connects the movable side and the fixed side, the structure is simple and there is no obstacle to the movement of the processing part.

FIG. 9 is a vertical sectional view showing a supporting structure of the processing mechanism 27, and FIG. 10 is an enlarged view of the end mill portion. The end mill 44, which is a processing tool, is fitted and fixed to the lower end of the rotary shaft 49 as shown in FIG. The rotary shaft 49 is rotationally driven by a drive gear 51 that meshes with a gear 50 attached to the upper end of the rotary shaft 49, as shown in FIG. The drive gear 51 is rotated by a dedicated drive means (not shown) so as to always obtain a rotation speed satisfying an optimum processing condition. Also, the rotary shaft 49
An elevating and lowering cylinder body 52 rotatably inserted through is supported by a support body 53 at an intermediate portion thereof, and ascends and descends along the cam surfaces of the cam plates 55 and 56 via a cam follower 54 attached to the support body 53. Is configured. As a result, the processing mechanism 27 descends according to the rotation angle of the rotary support 20,
The end mill 44 performs a predetermined finishing process on the end face of the mouth of the container 6. In the figure, 57 is a lifting guide shaft, and 58 is a connecting member for supporting the dust collecting cover 45 on the lifting cylinder 52. In addition, as shown in FIG. 10, a nozzle 59 for air injection is provided at the center of the end mill 44.
Can be installed. The nozzle tip portion 60 is formed in an umbrella shape and has a central ejection port 60a and a plurality of ejection ports 60b for ejecting obliquely upward. At the time of processing, the nozzle tip portion 60 is inserted into the mouth portion of the container 6 and air is blown from the inside of the container to blow dust such as shavings generated by the processing. in this case,
In particular, since the air is jetted toward the processed portion from the jet port 60b, it is extremely effective in removing dust. In the above description, an example in which the end face of the container is finished by using the end mill has been shown, but the container 6 is surely held even in other processing, and the processing dimension is determined from the step 6b. Therefore, the finished dimensional accuracy can be improved.

[0013]

According to the present invention, the following effects can be obtained based on the above constitution. (1) Since dust such as shavings generated by machining is removed by the dust collecting facility, various machining can be performed and a clean machining environment can be obtained. Also, as the dust collecting equipment, only the opening is provided on the side of the dust collecting cover provided around the processing tool, and there is no portion directly connected to the fixed side on the outside, so the configuration is simple and the processing section can be moved. There is no hindrance to and extremely smooth movement can be performed. (2) Since the machining position for the container is always indexed with reference to the stepped portion formed in the container, regardless of the variation in the molding and the variation in the dimension of the holder, the finished dimensional accuracy can be improved. (3) Since the neck of the container is securely supported by the neck support mechanism, it is easy to process.

[Brief description of drawings]

FIG. 1 is a plan view showing a layout of an application example of the present invention.

FIG. 2 is a vertical sectional view showing a main part of an embodiment of the present invention.

FIG. 3 is a plan view showing a mounting portion of the container in the embodiment.

FIG. 4 is a vertical sectional view of a mounting portion of the container.

FIG. 5 is a plan view showing a neck support mechanism in the embodiment.

FIG. 6 is a longitudinal sectional view of the neck support mechanism portion.

FIG. 7 is a bottom view showing the drive portion of the neck support mechanism from below.

FIG. 8 is a vertical cross-sectional view showing a processed state of the end face of the mouth portion in the embodiment.

FIG. 9 is a vertical cross-sectional view showing a supporting structure of the processing mechanism in the embodiment.

FIG. 10 is an enlarged view of an end mill portion in the example.

[Explanation of symbols]

1 ... Unnecessary head excision device 2 ... Mouth end face processing device 6 ... Container 6a ... Neck 6b ... Step 7 ... Cutter 10 ... Discharge chute 11, 12 ... Dust collector 17 ... Fixed spindle 18: Rotating shaft cylinder 21: Mounting part 22: Carrier 23: Lifting table 25: Neck support mechanism 26: Opening / closing clamp piece 27: Processing mechanism 28: Opening / closing drive shaft 29: Piston 44・ ・ ・ Endmill 45 ・ ・ ・ Dust collection cover 49 ‥ Rotary shaft 51 ・ ・ ・ Drive gear 52 ・ ・ ・ Elevating cylinder 54 ・ ・ ・ Cam followers 55, 56 ・ ・ ・ Cam plate 58 ・ ・ ・ Connecting members 59 ・ ・ ・ Nozzles 60a, b ...... Injection port

Claims (2)

[Claims] 1. A container transfer mechanism, a neck support mechanism that moves in synchronization with the transfer mechanism, and supports the neck of the container, and a neck support mechanism disposed above the neck support mechanism. A processing tool such as an end mill for processing the mouth of the container protruding upward is provided, and a dust collecting cover is provided around the processing tool, and the outer peripheral portion of the track of the dust collecting cover moves in the processing area. A dust collecting duct communicating with the opening of the dust collecting cover, and sucking dust such as shavings generated by the processing through the dust collecting cover and the dust collecting duct by a dust collector. A container mouth processing device. 2. The container transfer mechanism is provided with an urging means for urging the container upward, and the neck support mechanism is brought into contact with an upper surface of an appropriate stepped portion formed in the container, thereby the container. The container mouth processing device according to claim 1, wherein the container mouth processing device supports and processes.