JPH0645393B2 - Lid fastening device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is an improvement of a lid-clamping device applied to a roll-on cap or a crown capping machine that is clamped while forming a metal cap in a spiral groove of a container inlet. It is about.

(Prior Art) A conventional roll-on cap is shown in FIGS. 5 and 6, and a conventional crown capping machine is shown in FIGS.

First, the conventional roll-on cap (lid tightening device) will be described with reference to FIGS. 5 and 6. (1) is a cylindrical support sleeve fixed to a base (not shown), and (2) is the support sleeve.
Adjustable columnar column with vertical position fixed to (1), upper cam support (3) fixed to the same column (2), (4)
Is an upper annular rail having a cam groove fixed to the upper cam support body (3) by bolts or the like, (5) is a turntable, and the turntable (5) is fitted to the support sleeve (1). It is also connected to a drive device (not shown).
Further, (6) or the turret hub (mounting member) fixed to the turntable (5), (7) is a bottle gripping device, and the bin gripping device (7) is mounted on the turntable (5). Has been done. Further, (8) is a bottle having a spiral groove on the outer circumference of the bottle mouth, which is held by the bottle gripping device (7). Further, (8 ') is a cup-shaped roll-on cap made of a metal plate such as aluminum, (9) is a turret support sleeve fixed to the upper cam support (3) with bolts, and (10) is the turret support sleeve ( Fixed hub fixed to (9) with bolts, etc.
1) is the turret support sleeve (9) and the fixed hub (1)
(0) a sun gear held between, a lower annular rail (12) having a cam groove in which a fixed hub (10) is fixed to a fixed hub (10),
(13) is upper cam support (3) and turret support sleeve (9)
A ball bearing held by and, (14) is a turret frame,
The turret frame (14) is fastened to the turret hub (6) with bolts or the like, and the upper portion thereof is held by a ball bearing (13). Further, (15) is a cam follower having two rolls, a large one and a small roll, which are engaged with the cam groove of the upper annular rail (4), and a plurality of the cam followers (15) are arranged on the circumference of the turret. Further, (16) is suspended and supported by the cam follower (15) and is vertically movable in a slot (not shown) of the turret frame (14), and (17) is loosely fitted in the support yoke (16). Housing, (18) is the same housing
A nut screwed to (17), (19) a compression coil spring attached to the support yoke (16) and the housing (17), (20) a shaft fitted and fixed to the housing (17), The nut (21) is screwed into the coaxial (20), (22) is a ball bearing mounted in the housing (17), (23) is a spindle sleeve, and the spindle sleeve (23) is a shaft (20). ), Is inserted in the ball bearing (22), and is supported by a C-shaped retaining ring. Further, (24) is a planetary gear fixed to the spindle sleeve (23), and the planetary gear (24) meshes with the sun gear (11). Further, (25) is a cam follower engaged with the cam groove of the lower annular rail (12),
The sleeve (26) is suspended and supported by the cam follower (25) and is loosely fitted to the spindle sleeve (23) so as to be vertically movable in the slot (not shown) of the turret frame (14). A conical cam loosely fitted into the sleeve (23) and screwed into the sleeve (26), a body (28) screwed into the spindle sleeve (23), and a (29) penetrating the body (28) to play there. The fitted shaft, (30) is the same shaft
The pivot arm fixed to the upper end of (29), the pivot (31) fixed to the lower end of the pivot shaft (29), the arm, (32)
Is a cam roller pivotally supported by the pivot arm (30), (3
A forming roll 3) is axially supported by the povit arm 31, and the forming roll 33 is urged upward by the elastic force of a spring (not shown). Further, (34) is a pressure block, and the same pressure block (34) has a small plunger or the like which is screwed onto the shaft (20) and elastically attached to the coaxial (20). Further, (35) is a roll-on-cap fastening head, and the roll-on-cap fastening head (35) is
7) to (34) are built in. Further, (35 ') is a spindle assembly, and the same spindle assembly (35') has the above-mentioned parts (15) to
(26) (35) are built in.

Next, the operation of the roll-on cap shown in FIGS. 5 and 6 will be described. Turntable (5) with drive not shown
When the turret rotates, the turret frame (14) integrated with the turntable (5) also rotates, and the rotation of the turret frame (14) causes the cam follower engaged with the cam groove of the upper annular rail (4). (15) is the head for roll-on cap tightening
Move (35) up and down. When the turret frame (14) rotates, the planetary gear (24) rotates to rotate the roll-on cap tightening head (35), but the conical cam (27) and the pressure block (34) do not rotate. . On the other hand, the rotation of the turret frame (14) causes the cam follower (25) engaged with the cam groove of the lower annular rail (12) to move the conical cam (27) up and down. When the conical cam (27) descends with respect to the cam roller (32), the conical cam (32) rotates against the spring device (not shown) that presses the cam roller (32) against the conical cam (27). The pivot arm (30) rotates by moving to the large diameter portion of the cam (27). The reverse is also true. The rotation of the pivot arm (30) is transmitted to the pivot arm (31) via the pivot shaft (29), and the arm (31) is rotated to move the forming roll (33) to the roll-on-head head (35).
Move in and out with respect to the axis of. Roll-on cap
The operation from the time when the fitted bottle (8) of (8 ′) is gripped by the bottle gripping device (7) to the completion of the lid tightening is as follows. First, the roll-on cap tightening head (35) descends, and the tip of the pressure block (34) presses the roll-on cap (8 ') by the resilience of the spring built into it, and when it descends further, the spring (19) Roll-on cap due to the repulsive force F ₁ of
Form the top of (8 ') as shown in Fig. 6 and roll the forming roll (3
3) reaches a predetermined position, the conical cam (27) rises with respect to the cam roller (32), and a spring device (not shown) forms a roll.
(33) is pressed against the outer circumference of the roll-on cap (8 ').
At this time, the roll-on cap tightening head (35)
Since it is rotating with respect to (8), if the valley of the spiral groove of the bottle (8) and the pressure contact portion of the forming roll (33) are aligned, the roll-on cap (8 ') is deformed, and then the bottle (8 When the forming roll (32) is guided while rotating by the spiral groove of 8) and reaches the end of the spiral groove, it is formed in a screw cap shape. After that, the conical cam (27) descends with respect to the cam roller (32), releases the forming roll (33) from the roll-on cap (8 ') which is closed, and further raises the roll-on cap tightening head (35). Then, preparation for the next action such as discharging the bottle (8) is completed. In addition, the head for roll-on cap tightening
Since a plurality of (35) are arranged on the circumference of the turret frame (14), while the turret frame (14) makes one revolution, in addition to the above-mentioned lid tightening action, actions such as bottle feeding and discharging are performed. Is also done.

Next, a conventional crown capping machine will be described with reference to FIGS. The crown plugging machine removes the roll-on cap tightening head (35) of the roll-on cap shown in Figs.
Install crown tightening head (46) or spindle assembly
(35 ') is used by replacing it with a spindle assembly (46'), (36) is a bottle for cap closing held by the bottle gripping device (7), (37) is a crown, (38) ) Is a sleeve screwed to the spindle sleeve (23), (33) is a ball bearing mounted on the sleeve (38), (40) is a base, and the base (40) is a ball bearing.
Fitted in (39). Further, the adjacent bases are arranged so that their rotations are restrained by the shape of the bases themselves (not shown). Further, (41) is a ring fixed to the base body (40) by a bolt or the like, (42) is a diaphragm ring sandwiched between the base body (40) and the ring (41), and (43) is a bolt or the like to the ring (41). A crown table fixed by means of a notch-out plunger in which (44) is fitted into the base body (40) and the diaphragm ring (42), (45)
Is a compression coil spring interposed between the base body (40) and the knockout plunger (44), (46) is a crown fastening head having the above-mentioned portions (38) to (45) built therein, (46 ' ) Is each part (15) ~
With the spindle assembly incorporating (26) and (46), the operations other than the crown tightening head (46) are similar to those of the roll-on cap, and only the crown tightening head (46) is operated. To explain, the planetary gear (24) is rotated by the turret frame (14), but the crown tightening head (46) has a built-in bearing (39) and the base body (40) is restrained from rotating. Because
The lower part of the crown fastening head (46) does not rotate. When the crown fastening head (46) descends, it is supplied from a chute (not shown) in advance and placed on the crown table (43) (3).
7) is placed on the top of the bottle (36), and then the knockout plastic (44) is pressed against the crown (37) by the elastic force of the spring (45), and the crown fastening head (46) is attached. When it further descends, the diaphragm ring (42) comes into contact with the crown (37), and the elastic force of the spring (19) deforms the skirt of the crown (37) as shown in Fig. 8 to complete tapping. To do. At this time, the spring (19) has been replaced with a spring having a larger elastic repulsive force than in the case of the roll-on cap described above, and the spring (19) is plugged by the elastic force F ₂ . When the crown tightening head (46) rises, the knockout plunger (44) separates the capped bottle (36) from the head (46) by the resilient force of the spring (45), and the next work is performed. Complete the preparation.

(Problems to be Solved by the Invention) As described above, the roll-on capper shown in FIGS. 5 and 6 that can also be used in the crown capping machine shown in FIGS. 7 and 8 has a preformed screw (I). When the cap of the cap is tightened, there is no capping head that keeps the tightening torque of the cap constant, so that it cannot be used as a screw cap. (II) The vertical loads required to lock the roll-on cap and to cap the crown are about F ₁ = 200 kg and F ₂ = 400 kg, respectively. It is not practical to share the compression spring. It is necessary to disassemble and replace the whole. (III) Although the spindle assembly (64 ′) should not rotate when capping the crown, the rotation of the spindle assembly (64 ′) cannot be stopped due to its structure, and the tip of the crown tightening head (46) cannot be stopped. It is necessary to add rotation stopping means, and the structure is complicated in the crown tightening head (46) that is mounted in large numbers,
High cost. (IV) When the turret frame (14) rotates, the planetary gear (24) rotates and the roll-on-cap tightening head (35) rotates, so if the roll-on-cap speed changes, The rotation and revolution number of the attachment head (35) change in proportion to each other, and the lid closing speed of the roll-on cap also changes, so that stable lid closing performance cannot be obtained.

(Means for Solving the Problems) The present invention addresses the above problems, and a plurality of spindles, each having a lid fastening head, are mounted on the circumference of the spindle. A lid clamping device equipped with a turret mechanism for performing lid clamping one after another while pivotally moving in the circumferential direction, a fluid pressure cylinder supporting the spindle, a pressure booster capable of adjusting the pressure fluid supply pressure, and a pressure booster for the same. A pressure fluid passage for communicating the device with the fluid pressure cylinder via a rotary joint provided in a support bearing portion of the turret mechanism; a torque variable motor for independently driving each of the spindles; and a torque variable motor for the same. A control device for controlling the tightening speed and the tightening torque of the lid-clamping head, and a slip ring provided on the upper part of the struts of the turret mechanism. A lid tightening device connected to the variable torque motor via a pulling, and a roll-on cap tightening head, a crown tightening head, and a screw cap tightening head are selectively mounted on the spindle. The vertical load of the lid-clamping head required for the lid-clamping and tapping can be adjusted appropriately. Further, it is possible to easily and easily switch to a roll cap, a crown capping machine, or a screw cap. Also, the manufacturing cost can be reduced. Also, stable and high lid tightening performance can be obtained. Further, the optimum lid fastening can be easily performed. Further, another object is to provide a lid fastening device that can always set an optimal lid fastening torque for each spindle.

(Operation) The lid fastening device of the present invention is configured as described above, and the vertical load of the lid fastening head necessary for the lid fastening and stoppering is appropriately adjusted by the fluid pressure supplied from the pressure booster. In addition, the roll-on cap, crown capping machine, and screw cap can be switched by replacing the dedicated lid-clamping head, changing the setting value of the control device, and changing the setting value of the booster when necessary. Only then, the switching can be performed easily and easily.
Further, it is not necessary to provide rotation preventing means for each of the many lid-clamping heads, and the structure of the head-clamping portion is simplified, and the manufacturing cost of the lid-clamping / combining machine is reduced. Further, since the speed of the lid closing head is controlled separately from the turret speed, stable and high lid closing performance can be obtained. Further, the vertical load can be changed by the pressure intensifier, and optimum lid fastening can be easily performed. Since a torque variable motor is installed separately from the turret motor for each spindle, the optimum lid tightening torque can always be set for each spindle.

(Embodiment) Next, a lid fastening device of the present invention will be described with reference to an embodiment shown in FIGS. 1 to 4. FIG. 1 shows the case where the cap-closing device is a roll-on cap, FIG. 2 shows the case where the cap-showing device of FIG. 1 is replaced with a cap stopper, and FIG. 3 shows the case of FIG. The case where the lid display device is switched to the screw cap is shown.
The figure shows the case of switching to the same screen
The figure shows the capping state of the screen cap. In addition, in FIGS. 1 to 4 shown in FIG.
The same or similar parts as those shown in FIG. 8 are designated by the same reference numerals, and different points will be described below. (47) is a support sleeve (a component that replaces the support sleeve (1) in FIGS. 5 and 7), (48) is a support (a component that replaces the support (2) in FIGS. 5 and 7), and (49) is Fixed hub, fixed to stanchion (48), (50)
Is a turret hub fixed to the turntable (5), (51) is a plurality of turret frames fixed to the outer periphery of the turret hub (50), and (52) is pivotally supported by the support column (48). The turntable fixed to the turret frame (51), (53) is the turret table (52)
A sleeve fixed to the turret, a turret frame in which (54) is supported by the stanchion (48) and is fixed to the sleeve (53), and (55) is a turret frame (54) and a stanchion (48).
An O-ring that seals between the turret frame (54) and the column (48), and a (57) fixed to the turret table (52). A variable torque motor such as a servo motor, which is disposed on a control panel (not shown) via a control cable slip ring (56). Further, (57 ') is a timing pulley fixed to the output shaft of the motor (57), (58) is a support member (59) suspended from the cam floor (15) and is fixed to the support member (58). A cylinder loosely fitted in the turret frame (54), a piston (60) fitted in the cylinder (58), and a groove (61) fixed in the cylinder (58) of the turret frame (54). The key (62) engaged with is screwed to the piston (60) (5th and 7th).
Parts corresponding to housing (17) in the figure), (63) is the piston
A lock nut screwed to (60), (64) is installed at the bottom of the roll-on cap, and a pressure air booster that communicates with a pressure air source (not shown), and (65) is a pressure booster (64). The supply pipe for the pressurized air is increased, (66) is the air passage of the rotary joint formed between the column (48) and the turret frame (54), and (67) is screwed into the housing (61). A slider (part corresponding to the shaft (20) in FIGS. 5 and 7) and a slider (68) engaged with the turret frame (51) are engaged with each other. Parts equivalent to (26)), (6
9 is a flexible hose (air passage) that connects the cylinder (59) and the air passage (66), and the spindle sleeve (70) is loosely fitted to the shaft (67) and fitted to the bearing (22). (Parts corresponding to the spindle sleeve (23) in FIGS. 5 and 7), a key (71) fixed to the spindle sleeve (70), and a tamming (72) fixed to the spindle sleeve (70). A pulley, an endless timing belt in which (73) is stretched between the pulley (57 ') and the pulley (72),
(74) is a roll-on cap tightening head, each part (28)
Built-in (34). Further, (57 ') is a spindle assembly (an assembly corresponding to the spindle assembly (35') in FIG. 5), and (75) is a base screwed to the spindle sleeve (70) (sleeve in FIG. (Corresponding to 38)) and (76) are crown tables (corresponding to the crown table (43) in FIG. 7), which are fixed to the base body (75) with bolts or the like and adjacent ones rotate. It is arranged to be restrained. A diaphragm ring (77) is sandwiched and fixed between the base body (75) and the crown table (76) (the diaphragm ring in FIG. 7).
The parts corresponding to (42)) and (78) are the base (75) and the diaphragm ring (7
7) and knockout plungers (7th,
Parts corresponding to the knockout plunger (44) in Fig. 8),
(79) is a compression coil spring (a component corresponding to the spring (45) in FIG. 7) interposed between the base (75) and the knockout plunger (78), and (80) is a component (75). ) To (79) for the crown head, (81) is a spindle assembly (an assembly corresponding to the spindle assembly (46) in Fig. 7), and the spindle assembly (74 ') is the crown Tightening heads (80) are different.
Further, (82) is a base body (part corresponding to the sleeve (38) in FIG. 7) screwed to the spindle sleeve (70), (83) is a pivot arm pivotally supported on the base body (82), (84 ) Is a cam roller pivotally supported by the pivot arm (83), (85) is an open arm fixed to the pivot arm (83) shaft, (86)
A checking block is mounted so as to be vertically movable within the range of the elongated hole formed in the base body (82). Also (8
Reference numeral 7 is a compression coil spring interposed between the base body 82 and the checking block 86, and 88 is a checking arm built in the checking block 86. (Moving arm), (89) is a built-in moving chuck (stepped round bar) built into the checking block (86), and (90) is a screw cap bottle for screwing the screw on the outer periphery of the bottle mouth. Are formed.
In addition, (91) is a screw cap with a spiral groove,
(92) is a head for a screen cap and each part (82)-(86)
Built in. Further, (93) is a spindle assembly, and the screw head (92) for tightening the screw cap is different from the spindle assembly (74 ').

Next, the operation of the lid fastening device will be described.

(I) In the case of roll-on cap (see Fig. 1). The roll-on cap tightening head (35) is rotated by the motor (57).
Rotation of the pulley (57 ') through the belt (73).
Turntable (5) done by telling 2)
It is controlled separately from. Roll-on key guy flop (8 ') forming the top of the pressure booster (64) Futashime vertical load F ₁ obtained by thrust of the piston (64) caused by the air pressure supplied from' is performed with. Other operations are similar to those of the conventional one, and detailed description thereof will be omitted.

(II) In the case of a crown capping machine (see Fig. 2). When the roll-on cap of FIG. 1 is used as a crown capping machine, the roll-on cap fastening head (74) is removed and the crown head (80) is screwed on. The variable torque motor (57) is stopped and the pulley (72) does not rotate. The crown tightening heads (80) are configured so that adjacent ones restrain rotation, but instead of this, the torque variable motor (57) is used.
You may restrain the rotation of the crown head (80) by stopping.
In the plugging process that deforms the skirt of the crown (37),
Piston (60) generated by air pressure supplied from (64)
Crown with vertical load F ₂ ′ obtained from the thrust of
Mold (37). Other operations are similar to those of the conventional one, and detailed description thereof will be omitted.

(III) In the case of a screen cap (see Fig. 3 and 4).
When the all-on cap shown in Fig. 1 acts as a screen cap, the roll-on cap head (74)
And remove the screw cap head (92). The rotation of the head for the ski cap (92) is performed by transmitting the rotation of the variable torque motor (57) to the pulley (72) via the pulley (57 ′) belt (73), and the rotation table (5) and Is controlled separately (as in the roll-on cap). Screen cap head
When (92) descends, the sensor (89) comes into contact with the screw cap (91) previously mounted on the bottle (90) to detect the presence or absence of the cap. If there is no cap (91), the position of the sensor (89) with respect to the checking arm (88) does not change,
The checking arm (88) remains open and does not contact the bottle (90). On the other hand, when the cap (91) is provided, the relative position of the sensor (89) with respect to the checking arm (88) is changed and the checking arm (88) is closed by the elastic force of a spring device (not shown). The closing timing is immediately after the chucking arm (88) presses the upper surface of the screw cap (91) by the elastic force of the spring (87). The rotating chatting arm (88) closes,
When the outside of the screw cap (91) is gripped, the screw groove of the bottle (90) and the screw groove of the cap (91) mesh with each other and tighten. The tightening speed and the tightening torque are controlled by a controller (not shown) connected to the variable torque motor (57). When the tightening is completed, the conical cam (27) descends with respect to the screw head (92) for the screw cap, and the cam roller (8
4) Rotate the pivot arm (83), the open arm (85) opens the capping arm (86), and the
The grip of (91) is released. Other operations are the same as in the case of the roll-on cap, and detailed description thereof will be omitted.
The vertical load F ₃ for closing the lid by the piston (60) is
It is sufficient if it is larger than the elastic force of 7) and the piston (60) is kept fixed in the cylinder (59). Therefore, the roll-on cap F ₁ ′ or the crown capping machine F _{2 is used.} It may be the same setting as'.

(IV) As described above, switching between the roll-on cap, the crown capping machine, and the screw cap is performed by exchanging the dedicated heads (74) (80) (92) and changing the setting of the control panel (not shown). Performed by. Further, the lid clamping vertical loads (F ₁ ′, F ₂ ′, F ₃ ) suitable for each lid clamping device are easily adjusted to the set value by the pressure booster (64).

(Effects of the Invention) According to the present invention, a plurality of spindles, each having a head for head closing as described above, are arranged on the circumference, and the heads are tightened one after another while rotating the respective spindles in the circumferential direction. In the lid tightening device equipped with the turret mechanism, a fluid pressure cylinder for supporting the spindle, a pressure increasing device capable of adjusting the supply pressure of the pressure fluid, and the pressure increasing device are provided on a column bearing portion of the turret mechanism. A pressure fluid passage that communicates with the fluid pressure cylinder via a rotary joint, and a torque variable motor that individually drives the spindles,
A control device for controlling the tightening speed and the tightening torque of the lid tightening head via the same torque variable motor, and a slip ring provided on the upper part of the pillar of the turret mechanism are provided. It is connected to the variable torque motor via the above, and a roll-on cap tightening head, a crown tightening head, and a screw cap tightening head are selectively attached to the spindle for capping and tapping. The required vertical load of the lid-clamping head can be appropriately adjusted by the fluid pressure supplied from the pressure booster. In addition, the roll-on cap, crown capper, and screen cap can be switched to operate the replacement device of each dedicated lid-clamping head, change the set value of the control device, and change the set value of the booster when necessary. Therefore, the above switching can be performed easily and easily. Further, it is not necessary to provide a rotation preventing means for each of a large number of lid tightening heads, the structure of the head portion can be simplified, and the manufacturing cost of the combined-use machine can be reduced. Further, since the speed of the lid head is controlled separately from the turret speed, there is an effect that a stable and high lid tightening performance can be obtained.

Although the present invention has been described with reference to the embodiments, the present invention is of course not limited to such embodiments, and various design modifications may be made without departing from the spirit of the present invention. .

[Brief description of drawings]

FIG. 1 is a vertical sectional side view when an embodiment of the lid fastening device according to the present invention is a roll-on cap, FIG. 2 is a vertical sectional side view when a cap is capped, and FIG. FIG. 4 is an explanatory side view showing a capping state of the screw cleaner, and FIG. 5 is a longitudinal side view showing a conventional roll-on cap (capping device).
FIG. 7 is a view for explaining the operation, FIG. 7 is a vertical sectional side view when the roll-on cap of FIG. 5 is used as a crown capping machine, and FIG. 8 is a view for explaining the operation. (48) …… Posts, (56) …… Slip ring (57) …… Torque variable speed motor, (59) …… Fluid pressure cylinder (64) …… Intensifier, (65) (69) …… Pressure Fluid passage (66) ...... Rotary joint pressure fluid passage (67) ...... Spindle, (74) ...... Roll-on cap tightening head, (80) ...... Crown crown tightening head, (92) ...... Head for screw cap tightening

Claims (1)

[Claims] 1. A turret mechanism is provided in which a plurality of spindles, each having a head for lid fastening, are arranged on the circumference, and the lids are tightened one after another while the spindles are pivotally moved in the circumferential direction. In the lid fastening device, a fluid pressure cylinder supporting the spindle, a pressure booster capable of adjusting the supply pressure of the pressure fluid, and a rotary joint provided with the pressure booster on a support bearing portion of the turret mechanism are used. A pressure fluid passage communicating with a fluid pressure cylinder, a torque variable motor for independently driving each spindle, and a tightening speed and a tightening torque of a lid-clamping head are controlled via the torque variable motor. A controller and a slip ring provided on the upper part of the strut of the turret mechanism, and the controller is connected to the torque variable motor via the slip ring, Futashime apparatus characterized by a head for head and crown head and the screw key with him flop clamping with clamping with Ruonkiyatsupu clamping was selectively attached to the spindle.