JPS6181989A - Continuous molding capping method for canning cap - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a method for continuously forming and capping canned can caps in which the molding and capping of caps used for making cans, pull tops, etc. are all carried out in the same process. It is something.

(Prior art) Conventionally, in order to apply cap metal to cans, pull-tops, etc., molding the cap body and closing the can body were performed in separate work processes, resulting in very poor work efficiency and the need for different equipment. Larger size due to separate configurations,
It also had the disadvantage of being expensive.

(Purpose) The present invention enables the molding of the cap body and the closing of the can body to be performed continuously in the same process, thereby significantly improving work efficiency, and at the same time, making it possible to integrate and miniaturize the device and supply it at low cost. This is how it was done.

(Structure) To achieve the above object, the present invention transports a strip-shaped plastic film at a predetermined pitch, forms a cap recess by a film forming means that sequentially forms recesses of a predetermined shape, and then molds the cap recess. The periphery of each cap is punched out using a trimming means to form individual caps, and the caps are transferred to a lidding section where the caps are collected by tilting forward in the carrying-out direction by a conveyor, and in the lidding section, the caps are The cans are kept on standby with the recess facing downward, and the cans are transferred at predetermined pitches in the same direction as the cap conveyance direction under the lid, so that the front edge of the head of the can The front edge of the inner wall of the first cap is engaged to pull out the nuclear cap body from the lid part, and at the same time, the cap is pressed from above at the opening end of the lid to fit the cap to the top of the can. It is characterized by the following.

This will be explained in detail below based on examples.

FIGS. 1 to 4 show an example of an apparatus for carrying out the present invention, and the upper figure is a strip-shaped film transport apparatus. The above-mentioned belt-shaped film transfer device is well known and includes two endless chains 3, 3' installed on the machine frame 2 and a large number of film clamping claws (9) attached to the endless chains 3, 3'. (not shown), and the endless chain 3.3' is stretched around the sedge rocket 4 so as to be moved at predetermined pitches. The upper chamber 5a is a well-known vertically movable forming chamber/bar disposed at a predetermined position of the strip film transfer device 1, and the upper chamber 5a is fixed.
The interior of the movable lower cha/par 5b is equipped with a film preheating device 5c consisting of a hot plate and a pressure vacuum forming mold 5d. The trimming bar is a well-known trimming bar disposed at a predetermined position on the strip film transfer device, with a female punching die 6b inside the movable lower chamber 6a and fixed inside the upper chamber 6c. Punching male die 6d
Equipped with: (e) is a perforated cooling chamber disposed at a predetermined position on the strip film transfer device;
The fixed upper chamber 7a has a needle 7b (i-equipped,
The movable lower chamber 7cKij is equipped with cooling elements 7d such as cooling water and gas.

Note that the holes and the cooling chamber may not be provided if necessary. This is a cap body carry-out conveyor provided in the machine frame 2 below the trimming chamber, and an endless chain 8b having feeding claws 8a attached at predetermined pitches for pushing the cap body a punched out in the trimming chamber. A reversing guide 8c is provided on the tip side thereof. 8d is Sugerocket. This is a lidding device which is disposed in a forward-inclined state on the discharge end side of the cap body discharge conveyor l, and includes a table 9a that supports the cap body a in a floating state by air, and a tip end of the table 9a. A plate spring 9b is provided to suppress the top surface of the cap body a which is located at the top of the cap body a, and elastically supported between the cap body a and the entire table 9a, and a cap body suppressing member 9c such as a spon roller is provided at the end of the cover cutting outlet. is provided. The drawer is located below the lidding device and in the same direction as the unloading direction of the cap body a,
The can conveyor is arranged to be able to move approximately horizontally. Note that the distance between the canned can conveying conopear lever and the main lidding device can be freely adjusted according to the height of the canned container.

9d is a handle for adjusting the height of the lidding device. Reference numeral 10a designates canned can pushing claws attached at predetermined pitches to the endless chain 10b of the can conveyor, and 10c designates a sedge rocket. (2) is a surplus cap body discharge conveyor provided between the reversing cap body take-out conveyor at the lower part of the cap body carrying-out conveyor and the capping device 9, and the cap body a is placed on the table 9a of the capping device 9; When the cap body can no longer be ridden completely, the cap body is rotated downward as shown by the one-dot chain line in FIG. It is designed not to.

Reference numeral 12a denotes a reversing cap body feeding pawl attached to the endless chain 12b of the reversing cap body removal conovair 12 at predetermined pitches, and 12C represents a sprocket.

The gall is a discharge chute, the shell is a roll-cutting device for taking out the entire roll of the strip film F' after the cap body ai has been removed, 15 is a guide row, the display is a strip film, and the C is a plurality of strip films formed in parallel. The concave part for the cap and the inside are the conveyor for carrying canned cans.

The strip film is transferred intermittently at predetermined pitches on the strip film transfer device, and is heated and softened by the film preheating device 5c in the forming machine/pa. A small hole is formed in the concave portion C for the cap in the cooling chamber and cooled by the cooling element 7d, and then in the next trimming chamber, the cap is formed by punching dies 6b and 6d. The diagonal part Ci is punched out.

The punched cap body a falls from the female punching die 6b onto the cannge body conveyor 8 below, and is conveyed at predetermined pitches by the feed claws 8a, and then passes through a reversing guide provided on the tip side. 8c, the inverted cap body is taken out at predetermined pitches by the feeding claw 12a of the reversing cap body take-out conveyor to the table 9a side of the closing device, and is then taken out to the table 9a side of the lidding device through the excess cap body removal conveyor (2) and then transferred to the table 9a. sent to the top. At this time, the table 9a is in a forward-leaning state, so the cap body a slides over the table 9a, and as shown in the third figure, the front edge a' of the inner wall is moved by the leaf spring 9b at the tip of the table 9a. The canned cans are protruded from the can and held in a fixed state.
The head of the canned can is hooked on the front edge b't of the can and the front edge a' of the inner wall of the cap body a, and is further conveyed in this state. is pulled out from above the table 9a as the can can moves, and is pressed from above by a fixed pressing member 9c set at the tip of the table 9a to fit onto the can. . Note that the band-shaped film F' after the cap body a has been punched out is wound up by a winding device when gripping claws (not shown) that grip both side edges are separated.

(Effects) According to the present invention, the molding of the can cap body and the closing of the can body are all carried out in a series of steps. The entire process of forming and capping the can body can be carried out continuously, which can significantly improve work efficiency, and also allows the equipment to be integrated and miniaturized, resulting in lower costs. In addition, it has various features such as being able to greatly reduce the installation area and work area, and being easy to implement and hold in a small area.

[Brief explanation of drawings]

Fig. 1 is an overall front view of the present invention, Fig. 2 is a plan view of the same, and Fig. 3 is a front view of the present invention.
The figure is a partially enlarged view showing the engaged state of the cap body and the canned can at the tip of the capping device, and Figure 4 is an enlarged view showing the arrangement and relationship between the cap reversing section at the tip of the cap body discharging conveyor and the reversing cap body take-out conveyor. FIG. 5 is a front view of the can with the cap fitted. Top... Strip film transfer device, 2... Machine frame, 3.3
'...endless chain, 4...sprocket,
1. Molding chamber/par, vertical...trimming chamber,
E... Hole drilling, cooling chatuba - 1 Roasting... Cap body discharging conveyor, Main... Capping device, Current canned can conveyor, Dan... Surplus cap body discharging conveyor, Large...
・・Inverted canog body take-up/bear, lla・・detector, shellfish・・discharge/neat, block・・winding device, 15・・guide row, pressure・・loading conveyor, F・・band shape Film, a... Cap body, B... Canned food can, C... Concave portion for cap.

Claims (2)

[Claims] (1) A belt-shaped plastic film is transferred to a predetermined pitch, and a concave portion for a cap is formed by a film molding means that sequentially forms concave portions of a predetermined shape.Then, the circumference of the concave portion for a cap is punched out by a trimming device to form individual pieces. A cap is formed, and the cap is transferred by a conveyor to a lidding part which is tilted forward in the carrying-out direction to collect the caps, and is kept waiting in the lidding part with the concave part of the cap facing downward. At the same time, the cans are transferred below the lid part in the same direction as the cap conveyance direction at predetermined pitches, so that the front edge of the head of the can and the front edge of the inner wall of the first cap are A series of can caps characterized in that the cap body is pulled out from the lid part by engaging the cap body, and the cap is pressed from above at the exit end of the lid part to fit the cap to the head of the can can. Molding lid method. (2) Continuous molding of can caps according to claim 1, characterized in that the concave portion of the cap is formed upward, and the cap is inverted during transportation after trimming so that the concave portion faces downward during transportation. How to close the lid.