FI93175C - Crusher device for return packaging - Google Patents

Description

931 75

The invention relates to a crushing device for return packaging.

Return packaging handling systems are known in the art in which the return package is torn or crushed to bring the return package to a smaller volume, thereby facilitating its storage and possible further processing. This application 10 discloses a new type of return package crusher which can be used to make specially returned plastic bottles smaller.

The device according to the invention flattens the return package between two roller wheels. In the apparatus solution according to the invention, both roller wheels are used, the drive imported from the motor 15 being transferred from the first roller to the second roller via gears and belt transmission. In the solution according to the invention, the rollers are pressed against each other by means of a spring device (s). The roller wheels comprise on their surface a receiving cavity for the return of a return package, preferably a plastic bottle. The receiving cavity consists of both a portion in the first roll and a portion in the second roll 20. In addition, there is a separate receiving hole for the plastic bottle cap if the return package has been dropped upside down into the device. In the device solution according to the invention, the first roller comprises on its surface a presser, which is a horseshoe-shaped (U-profile) circumferential part protruding from the roll surface surrounding the abutment cavity, by means of which the package transferred to the receiving cavity is pressed into the roll between the rolls. In the apparatus solution according to the invention, each roller further comprises one or more blades by means of which the return package is aerated in order to allow it to be flattened to a smaller volume. In order to return the package can be removed from the roll after rolling rolls connection, the gap is the trailing region with guides having the flattened package from the rolls connection.

The device according to the invention is mainly characterized in that in the crushing device the drive is taken from the motor output shaft to the roller and that the crushing device comprises a drive wheel connected to the roller shaft, over which the drive member is passed and adapted to rotate a gear on the same shaft which drives the shaft of the second roller suspended from the rocker arm through its gear.

5

The invention will now be described with reference to some preferred embodiments of the invention shown in the figures of the accompanying drawings, to which, however, the invention is not intended to be exclusively limited.

Figure 1A shows the operation of a crusher for plastic return packages, preferably return bottles, according to the invention, partly diagrammatically.

Figure IB shows the equipment of Figure IA arrow K direction.

15 Figure 1C shows the equipment of Figure IB, the direction of the arrow K2.

Figure 2A is a side view of the apparatus at the stage where the plastic bottle has dripped into the space between the rollers in the receiving recess of the end of the plastic bottle.

Figure 2B shows a top view of the rolling arrangement.

Figure 2C shows a section I-I of Figure 2B.

Figure 3 shows an axonometric view of the first side guide 25 in connection with the ridge between the rollers, the function of which is to guide the return package to the nip N between the rollers.

Figure 4 shows the apparatus of Figure 3 the direction of arrow R3 direction.

Fig. 5A shows the venting blade, its mounting piece, axonometrically.

93175 3

Figure 5B shows a section II-II of Figure 5A.

Figure 5C is a section III-III of Figure 5A.

Figure 1A shows the operation of a plastic return bottle crusher according to the invention. The presentation is schematic. Figure IB shows the equipment of Figure IA arrow K direction. This application refers to a crushing device for return packages, preferably return bottles. The equipment is also suitable for crushing other packages. The apparatus comprises a first roller; a roll roll 10a and a second roll; roll roll 10 10b, both driven through the same motor (not shown). The motor shaft 11a is connected via a flange coupling 12 to a shaft 11b comprising a gear 13. The gear 13 is operatively connected to the driven gear 14 on the shaft 15a of the first roller 10a.

The second shaft 15b of the first roller 10a comprises a pulley 16 which drives a belt 17. The belt 17 is passed over the pulley 18. The pulley 18 is articulated to rotate on a rocker arm 22a in a shaft 19. A gear 20 is connected to the same shaft 19, which drives a similar second gear 21 and further a second roller 10b. The purpose of the above-mentioned gear drive is to change the direction of rotation. A gear 20 is connected to the belt 18 of the belt-20 and is mounted by a common bearing on the shaft 19.

The first rocker arm 22a comprises the shaft 19 of the pulley 18 and the gears 20 and 21. The gear 21 is fitted to the shaft 23 of the second roller 10b. The springs J1, J2 are tensioned between the body R and the ends of each rocker arm 22a, 22b. By means of the spring Jt, J2, the second roller 10b is kept pressed against the first roller 10a.

As shown in Fig. 1B, a spring J is connected at one end to the rocker arm 22a and at the other end to the body R by means of an adjusting device 50. The adjusting device 50 is preferably 4 93175 screws connected to a lug 51 connected to the end J By rotating 50, the lug 51 is moved and the force with which the spring Jj presses the second roller 10b against the first roller 10a is adjusted. Preferably, both springs J1, J2 comprise a similar control device 50.

Figure 1C shows the equipment in the direction of arrow K2 in Figure IB.

Figure 2A illustrates the operation of a crushing device for return bottles, preferably plastic return bottles, according to the invention. Figure 2A shows the step in which the return package, preferably the bottle P, has entered the receiving recess 24a, 24b on the surface of the rollers 10a, 10b.

Figure 2B is a top view of the apparatus and Figure 2C is a section I-I of Figure 2B. The receiving space at the end of the bottle consists of a larger receiving area 24a in the first roll 10a and a smaller receiving cavity portion 24b in the second roll 10b. The receiving cavity portions 24a and 24b together form a receiving space at the end of the bottle. Thus, the common cross-section of the receiving cavities 24a, 24b is a circular cross-section and corresponds to the circular cross-sectional shape of the bottom of the returnable and crushable bottle 20. In addition, the first roll 10a has a smaller surface area for the plastic bottle cap 26 below the receiving recess 24a. This acts as a cap receiving space if the return bottle is dropped onto the roll with the cap side down. The receiving cavity 26 is located only in the first roller 10a.

25

As shown in the figure, the apparatus comprises a pusher 27 projecting from the surface of the roller 10b in the second roller 10b. A pusher 27 circumferentially positioned around the receiving recess portion 24b is secured to the surface of the second roller 10b by a screw. As the roll 10b rotates, the presser 27 forces the return package into the nip N between the rollers 10a, 10b. The apparatus further comprises detachment portions 29a, 29b on the discharge side of the nip N between the rolls 10a, 10b 75 follows the surface of the roll 10a, 10b, but falls directly into the storage tank below. The plate-like separator 29a, 29b extends into a groove Uj, U2 on the surface of the roller 10a, 10b and protrudes on the discharge side of the nip N between the rollers 10a, 10b, i.e. the gap between the rollers 10a, 10b, in connection with the rollers. The guide 29a, 29b 5 supported at both ends on the frame R also acts as a support structure and a guide structure for the roller 10a, 10b.

The roller structure 10a, 10b further comprises pairs of blades 283, 283212833,2884: 2835,2835. The first blades 28a, 28a2 are located on the first roller 10a near the upper edge D of the receiving recess 24a of the package P. They make the first 10 vents in the package. The function of the blades is thus to puncture the plastic bottle P and thus to act as vent holes so that the return package, especially if it contains a cap, can be emptied of air as the rolling progresses. Other pairs of blades are used to form vent holes at several points in the return package P along its length.

Both the roller 10a and the 10b have cavities E1, E2, E3 on their surface, in which the blades of the counter roll are placed. This allows the rollers to rotate so that the blades are not damaged. The roller 10b further comprises a relatively wide roll width central receiving recess E4 for the cap of a compressible plastic bottle. The recess E4 acts as a relief cavity and prevents an impact-like load when the cap enters the nip N.

20

Fig. 3 shows an axonometric view of a side guide 30 in connection with the ridge between the rollers 10a, 10b, the function of which is to guide the return n of the return packs. The side guides 30 are located on both sides of the compression line X between the rollers 10a, 10b.

25

As shown in Fig. 4, the side guides act as wedge-shaped parts extending to the nip N, which gradually force the package to the final width and shape determined by the distance f between the side guides. The side guides 30 are articulated to be tiltable by hinge means 31 and can be adjusted to the desired inclination position by means of an adjusting device 32, 30, preferably by means of screws. The screw means 32 are adapted to rotate in the body R.

931 75 6

Figure 5A shows an axonometric view of the attachment of the vent blade to the roll surface, the recess therein. Figure 5B shows a section II-II of Figure 5A. Figure 5C is a section III-III of Figure 5A. The blade 28 is placed with its mounting piece 32 in a recess S made in the surface of the roller 10a, 10b. The blade 28 comprises two cutting edges Bj and B25 and a sharp handle O. With respect to the blade mounting surface C, . The blade is fixed to the threaded hole M of the roller 10a, 10b by screw means 33a, 33b with screw means 33. When the screws 33a, 33b are removed, the release screw 34 is turned and the fixing piece 32 is lifted, whereby the blade 28 is released from the blade hole on the roller surface. There is a wedge connection between the blade 28 and the mounting piece 32 10.

il:

Claims (4)

931 75 Patent claims A return package crushing device comprising a first roll roll (10a) and a second roll roll (10b), and wherein the drive system comprises rocker arms (22a, 22b) on which the second roller (10b) is suspended and wherein the system comprises a rocker arm (22a, 22b) and between the body (R) a spring (J1, J2)> by means of which a second roller (10b) is pressed against the first roller (10a) by a spring force, characterized in that the crusher device from the motor output shaft (11b) 10a) a drive wheel (16) connected to the shaft (15b), over which the drive member (17) is passed and which drive member (17) is further extended over the second drive wheel (18) on the rocker arm (22a), and that the drive wheel (18) is adapted to rotate a gear (20) on the same shaft (19) which drives the shaft (23) of the second roller (10b) suspended on the rocker arm (22a) through its gear (21). Crushing device according to claim 1, characterized in that the spring (J1, J2) comprises in connection with a control device (50) by means of which the force with which the spring (J1 »J2) presses the second roller (10b) against the first roller (10a) can be determined. against. Crushing device according to claim 2, characterized in that the tension adjusting device (50) of the spring 20 (J1, J2) comprises a screw, by turning which the force with which the spring (J1, J2) presses the second roller (10b) from the first roller (10b) can be adjusted. 10a) against. Crushing device according to one of the preceding claims, characterized in that the rocker arms (22a, 22b) are connected by a shaft (25) which is mounted by means of bearing means (Gi, G2) on the body (R) of the device. 93175