FI91045C - Return crusher - Google Patents

Description

91 045

The invention relates to a crushing device for return packaging.

EP 0 207 973 discloses a return bottle crusher with which a return package is crushed between roller wheels. In addition, return packaging handling systems are known in the art, in which the return package is torn to a return volume to a smaller volume, thereby facilitating its storage and possible further processing.

Our application discloses a new type of crusher, in which the device according to the invention comprises a first roller with a presser on its surface, which is a horseshoe-shaped (U-profile) circumferential portion protruding from the roll surface surrounding the abutment cavity. The solution effectively ensures a reliable supply of the return package to the gap between the roll rolls.

20 The machine flattens the return package between the two roller wheels. In the equipment solution, both roller wheels are used, the drive imported from the motor being transferred from the first roller to the second roller via gears and belt transmission. The rollers · ** - are pressed against each other by means of a spring device (s). The roller wheels comprise on their surface a receptacle for the return of a return package, preferably a plastic bottle. 25 The receiving cavity consists of both a portion on the first roll and a portion on the second roll. 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 apparatus, each roll further comprises one or more blades for venting the return package to allow it to flatten to a smaller volume. 30 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.

2 91045

The device according to the invention is mainly characterized in that a pusher projecting from the roll surface is arranged in connection with the roll surface of the receiving roll of the second roll, which is arranged close to the upper edge of the receiving housing to surround the receiving housing.

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 of plastic return packages, preferably return bottles, according to the invention, partly diagrammatically.

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

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

15

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.

20

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

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

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

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

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

30 il 3 91 045

Figure 5C shows a section IIHII 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, the direction of the arrow 5 Ki. 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 roller roll 10a and a second roller; roller roll 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 the wheel-15 on a rocker arm 22a on 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 pulley 18 and is mounted by a common bearing on the shaft 19.

20

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 rocker arms 22a and 22b are fixed to the shaft 25 and the shaft 25 is pivoted by pivoting bearing means Gj, G2. The springs JltJ2 are tensioned between the body R and the ends of each of the rocker arms 22a, 22b. By means of the spring J1? J2, the second roller 10b is kept pressed against the first roller 10a.

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As shown in Fig. 1B, the spring Jt is connected at one end to its rocker 22a and at the other end to the body R by means of an adjusting device 50. The adjusting device 50 is preferably a screw 30 connected to a lug 51 connected to the end of the spring Jj, which is further screwed to the crusher body R. 4 91 045 lug 51 and adjusts the force with which the spring presses the second roller 10b against the first roller 10a. Preferably, both springs J1, J2 comprise a similar adjusting device 50.

5 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 first recess portion 24a in the first roll 10a and a smaller receiving recess 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 bottle to be returned and crushed. In addition, the first roll 10a has a smaller surface area 20 for the receiving cavity 26 for the plastic bottle cap below the receiving cavity 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 in the first roll 10a only.

As shown in the figure, the apparatus comprises a pusher 27 25 protruding 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 roller 10b rotates, the presser * * · · '27 forces the return package into the nip N between the rollers 10a, 10b. the package 30 does not follow the surface of the roll 10a, 10b, but falls directly into the storage container below. The plate-like separator 29a, 29b extends into a groove 91045 in the surface of the roller 10a, 10b.

Uj, U2 and it protrudes from the connection 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 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 28a1,28a2, 28a3,28a4, 28a5,28a6. The first blades 28aj, 28a2 are located in the first roller 10a near the upper edge D of the receiving recess 24a of the package P. They make the first air 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 10b have cavities Ej.E ^ Ej 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.

Fig. 3 shows an axonometric view of a side guide 30 in connection with a 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.

As shown in Fig. 4, the side guides act as wedge-shaped portions 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:. . with hinge means 31 and can be adjusted to the desired inclination position by means of an adjusting device 32, preferably by means of screws. The screw means 32 are adapted to rotate in the body R.

Figure 5A shows an axonometric view of the attachment of the venting blade to the roll surface, the recess therein. Figure 5B shows a section II-II of Figure 5A. Fig. 5C is a section III-III of Fig. 5A shown in Fig. 91,045. 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 a sharp handle O. With respect to the blade mounting surface C, the tip E protrudes obliquely upwards from the mounting surface C. The blade is fixed to the threaded hole M of the roller 10a, 10b by means of 5 fixing pieces 32 with screw means 33a, 33b. There is a wedge connection between the blade 28 and the mounting piece 32.

II

Claims (11)

91 045 A return crusher apparatus comprising a first roller (10a) and a second roller (10b), the rollers being rotated and pressed against each other by force, that the first roller roll (10a) comprises a receiving recess (24a) on its surface and that the second roller (10b) also comprises a receiving recess (24b) on its surface, which recesses (24a, 24b) are cooperating with each other and form a receiving space for a return package, preferably a plastic bottle, fed to a nip between rollers, characterized in that 10 rollers projecting from the roll surface are arranged in connection with the second roll (10b) (27) arranged near the upper edge of the receiving slot (24b) to surround the receiving slot (24b). A crusher device according to claim 1, characterized in that the first roller (10a) comprises, in addition to the receiving recess (24a), a second receiving recess (26) for the cap of the returnable plastic bottle if the bottle is in front of the cap (N). Crushing device according to one of the preceding claims, characterized in that the roller (10a, 10b) has a groove (Uj, U2) running around the roller formed centrally on the roller width, to which a guide (29a, 29b) is arranged, and thus, the guide (29a, 29b) projecting from the surface of the roll nip (n) of the downstream region, whereby 'the guides (29a, 29b) is removed by means of compressed returnable packaging the roll surface. Crushing device according to one of the preceding claims, characterized in that the roller (10a, 10b) has venting blades (28a1 ... 28a6) on its surface, the venting blades forming venting holes in the package, whereby air escapes and; this prevents air resistance to the crushing event. Crushing device according to the preceding claim, characterized in that the blade (28) projects obliquely upwards from the mounting surface (C) of the blade (28), the blade comprising two cutting edges (Β ,, Ε ^), between which an angle (a) is left, which is in the range of 8 91045 30-45 °. Crushing device according to the preceding claim, characterized in that there is a fastening piece (32) which can be screwed onto the roller 5 (10a, 10b) by means of screws (33a, 33b) and that the fastening piece (32) presses the blade (28) onto the roller and held in the recess (S) made in the surface of the roll. Crushing device according to the preceding claim, characterized in that there is a wedge connection between the blade (28) and the fastening piece (32). 10 Crushing device according to one of the preceding claims, characterized in that the roller (10a, 10b) has recesses (E1 ... E3) on its surface which co-operate with the counter roll blades (28) and in such a way that the counter roll blade rests in said recess (Ej). , E2) to prevent damage to the blade. 15 Crushing device according to one of the preceding claims, characterized in that the roller (10b) has on its surface a central cavity (E3) of roll width, which acts as a relief in the crushing step where the cap of the plastic bottle to be crushed enters the nip (N). 20 Crushing device according to one of the preceding claims, characterized in that the device comprises wedge-shaped side guides (30) extending into the nip (N) between the rollers (10a, 10b). Crushing device according to the preceding claim, characterized in that it has an adjusting device (32) by means of which the inclination of the side guide (30) is adjusted. • V. · 9 91045