EP2351690B1

EP2351690B1 - Follow-up sealing equipment for packing bags used in a filling machine

Info

Publication number: EP2351690B1
Application number: EP09828589.3A
Authority: EP
Inventors: Hui WEI
Original assignee: Bengbu Zhongzheng Industrial Co Ltd
Current assignee: Bengbu Zhongzheng Industrial Co Ltd
Priority date: 2008-11-01
Filing date: 2009-10-28
Publication date: 2014-09-17
Anticipated expiration: 2029-10-28
Also published as: EP2351690A1; WO2010060329A1; JP2012506828A; JP5165117B2; CN201296404Y; EP2351690A4; KR20110081342A; KR101315030B1

Description

Field of the Invention

The present invention relates to product-packing machine fields, and more particularly, to a follow-up sealing equipment for packing bags used in a filling machine according to the preamble of claim 1.

Background of the Invention

At present, the filling machines for shaping bags on the market are all in the form of multi-station rotary filling and packing by use of a round rotary table; the basic structure mode required for this form is that there are a number of clamping devices uniformly distributed at the periphery of the round rotary table; corresponding sealing equipments are arranged for respective clamping devices; a bag-supplying structure is arranged outside the round rotary table; packing bags are supplied to the respective clamping devices via the bag-supplying structure and then sealed by the sealing equipment after the packing bags clamped by the clamping device are filled completely. The sealing operation of the existing filling machine for shaping bags is performed by a sealing equipment when the rotary table is rotated to the next station after the filling is completed. It is decided by the structure of the sealing equipment that the rotary table operates in the form of stepping rotation, so that the sealing equipment can perform the sealing operation when the rotary table is halted and subsequently the next packing bag to be sealed is supplied to the clamping device by the bag-supplying structure after the previous packing bag finishes its free fall. The stepping rotary table consumes a large number of effective time in the ceaseless start-stop-start process and results in a low work efficiency of the filling machine, meanwhile the power consumption of the filling machine is relatively large because of the frequent start and stop of the rotary table.
JP 2000062732 A discloses an equipment according to the preamble of claim 1.

Summary of the Invention

The objective of the present invention is to provide a follow-up sealing equipment for packing bags used in a filling machine which may implement the exact coordination between the clamping component and the sealing component during the continuous rotation of the rotary table, so as to implement the sealing of packing bags.
To achieve the above objective, a follow-up sealing equipment for packing bags used in a filling machine according to claim 1. The equipment comprises: a rotary table and clamping components uniformly distributed at the periphery of the rotary table; a track arranged outside the rotary table; a sliding seat slidably installed on the track; a number of sealing components and positioning components adjacent to the sealing components arranged on the sliding seat; the sealing components corresponding with the clamping components respectively; a first spring connected between the track and the sliding seat.
Preferably, the sealing component comprises a first cylinder and a seal head; the first cylinder is fixed on the sliding seat; the seal head is connected to the fore-end of the piston rod of the cylinder.
Preferably, the positioning component comprises a second cylinder and a pusher dog; the second cylinder is fixed on the sliding seat; the pusher dog is hinged to the sliding seat and to the fore-end of the piston rod of the second cylinder.
Preferably, a number of first rolling wheels located at both sides of the track respectively are installed at the bottom of the sliding seat; the sliding seat is matched with the track by the first rolling wheel in a rolling way.
Preferably, a damping bump is fixed at the edge of the sliding seat; a guide sleeve is fixed at the bottom of the track; a guide rod is installed inside the guide sleeve and protruding out of the upper end of the guide sleeve; a screw stem is protruding into the guide sleeve from the bottom of the guide sleeve.
Preferably, a second spring is connected between the guide rod and the screw stem.
Preferably, the screw stem is connected to the guide sleeve by screw thread.
Preferably, a second rolling wheel is installed at the upper end of the guild rod; the second rolling wheel is rested against the downside of the damping bump; wherein, the downside of the damping bump is an inclined plane.
Preferably, a proximity switch adjacent to the fore-end of the sliding seat is fixed on the track.
Preferably, the first spring is connected between the track and the sliding seat in such a manner that a bracket is fixed at the fore-end of the track and both ends of the first spring are connected to the bracket and the sliding seat respectively.
The follow-up sealing equipment for packing bags in a filling machine according to the present invention has a reasonable structure and reliable performance; respective sealing components of the sliding seat may finish the sealing of the packing bags in the course of following the rotation of the rotary table; it is possible for the equipment to avoid the work process of frequent start-stop-start of the rotary table and to ensure that the rotary table may run in a uniform speed stably throughout, so as to greatly improve the productivity of the filling machine; moreover, sealing components of the sliding seat are exactly coordinated with the clamping components of the rotary table respectively during the sealing operation and hence a good sealing effect may be obtained.

Mode of Carrying Out the Invention

Particular modes for carrying out the present invention will be further described in detail with reference to accompanying drawings and embodiments. The following embodiments are used for explaining the present invention but not limiting the scope thereof.

Fig.1 1 is a structure diagram illustrating a follow-up sealing equipment for packing bags used in a filling machine according to an embodiment of the present invention;
Fig.2 is an A-A sectional view of fig.1;
Fig.3 is a B-directional view of fig.1.

Referring to fig.1 and fig.2, the follow-up sealing equipment for packing bags used in a filling machine comprises: a rotary table 1 and a number of clamping components 2; the clamping components 2 are uniformly distributed at the periphery of the rotary table 1. A track 3 is arranged outside the rotary table 1; a sliding seat 5 slidably matched with the track 3 is installed on the track 3; a number of sealing components corresponding to the clamping components 2 are installed on the sliding seat 5; the sealing component comprises a first cylinder 6 and a seal head 7; the first cylinder 6 is fixed on the sliding seat 5; the seal head 7 is connected to the fore-end of the piston rod 6a of the first cylinder 6.
The rotary table 1 uses the base 2a of the clamping component 2 as a stopper; a positioning component is located adjacent to the sealing component. The positioning component comprises a second cylinder 8 and a pusher dog 9; the second cylinder 8 is fixed on the sliding seat 5; the pusher dog 9 is hinged to the sliding seat 5 and to the fore-end of the piston rod 8a of the second cylinder 8; a proximity switch 11 adjacent to the fore-end of the sliding seat 5 is fixed on the track 3. A first spring 10 is connected between the track 3 and the sliding seat 5 in such a manner that a bracket 12 is fixed at the fore-end of the track 3 and both ends of the spring 10 are connected to the bracket 12 and the sliding seat 5 respectively.
Referring to fig.2, a number of first rolling wheels 13 respectively located at both sides of the track 3 are installed at the bottom of the sliding seat 5; the first rolling wheel 13 is matched with the track 3 in a rolling way. A guide sleeve 16 is fixed at the bottom of the track 3. Through a screw, the guide sleeve 16 is fixed on a support plate 22; the support plate 22 is connected to the track 3; a guide rod 15 is installed inside the guide sleeve 16 and protruding out of the upper end of the guide sleeve 16; a screw stem 19 is protruding into the guide sleeve 16 from the bottom of the guide sleeve 16 and is connected to the guide sleeve 16 by screw thread; a handle 20 is connected to the bottom of the screw stem 19; a second spring 18 is installed between the guide rod 15 and the screw stem 19; a second rolling wheel 14 is installed at the upper end of the guide rod 15. In addition, there is a through groove 16a slotted on the guide sleeve 16; a screw 17 is passing through the through groove 16a and coupling with the bottom of the guide rod 15.
Referring to fig.2 and fig.3, the downside of the damping bump 4 fixed at the edge of the sliding seat 5 is an inclined plane; the second rolling wheel 14 is rested against the downside of the damping bump 4.
A pusher dog 9 of the positioning component is protruding out by the second cylinder 8 and a base 2a of the clamping component 2 may rest against the pusher dog 9, when a group of clamping components are rotated to the side where the track 3 is located after packing bags clamped on the group of clamping components 2 are filled completely, during the rotation of the rotary table 1, thereby the respective sealing components of the sliding seat 5 may be aligned with the respective clamping components of this group one by one by means of the pusher dog 9 rested against the base 2a; afterwards, the base 2a of the clamping component 2 may push the pusher dog 9 to slide on the track 3 along with the sliding seat 5; when the fore-end of the sliding seat 5 and the proximity switch 11 is separated from each other at a certain distance, the proximity switch 11 may send a signal to allow the first cylinder 6 of each sealing component to push the seal head 7 out; in this way, a packing bag clamped by the group of clamping components 2 may be sealed during the rotation of the rotary table 1 by the seal heads 7 of respective sealing components cooperating with respective clamping components 2 one by one. The seal heads 7 of respective sealing components and the pusher dog 9 of the positioning component are retracted after the sealing is completed; the sliding seat 5 may return to its original position under the effect of the first spring 10, so as to seal the filled packing bags clamped on the next group of clamping components.
It can be seen in conjunction with fig.1, fig.2 and fig.3 that under the effect of the first spring 10, the downside of the damping bump 4 on the sliding seat 5 may slide along the second rolling wheel 14 in the course of the sliding seat returning to its original position; under the effects of the second rolling wheel 14, the guide rod 15 and the second spring 18, the sliding of the damping bump 4 may be damped, so as to provide a cushion effect for the returning of the sliding seat 5.

Industrial applicability

The follow-up sealing equipment for packing bags used in a filling machine according to the present invention has a reasonable structure and reliable performance; respective sealing components of the sliding seat may finish the sealing of the packing bags in the course of following the rotation of the rotary table; it is possible for the equipment to avoid the work process of frequent start-stop-start of the rotary table and to ensure that the rotary table may run in a uniform speed stably throughout, so as to greatly improve the productivity of the filling machine; moreover, sealing components of the sliding seat are exactly coordinated with the clamping components of the rotary table respectively during the sealing operation, and hence a good sealing effect may be obtained.

Claims

A follow-up sealing equipment for packing bags used in a filling machine comprising a rotary table (1) and clamping components (2) uniformly distributed at the periphery of the rotary table (1), wherein a track (3) is arranged outside the rotary table (1); a sliding seat (5) is slidably installed on the track (3), a number of sealing components and positioning components located adjacent to the sealing components are arranged on the sliding seat (5) and the sealing components correspond with the clamping components respectively,
characterized in that
a first spring (10) is connected between the track (3) and the sliding seat (5),
wherein, during rotation of the rotary table (1), the respective sealing components of the sliding seat (5) are arranged to align with the respective clamping components of a group of clamping components one by one and wherein, after sealing, the sliding seat (5) is arranged to return to its original position under the effect of the first spring (10).
The follow-up sealing equipment for packing bags used in a filling machine of claim 1, characterized in that, the sealing component comprises a first cylinder (6) and a seal head (7); the first cylinder (6) is fixed on the sliding seat (5); and the seal head (7) is connected to the front end of the piston rod (6a) of the first cylinder (6).
The follow-up sealing equipment for packing bags used in a filling machine of claim 1, characterized in that, the positioning component comprises a second cylinder (8) and a pusher dog (9); the second cylinder (8) is fixed on the sliding seat (5); and the pusher dog (9) is hinged to the sliding seat (5) and to the front end of the piston rod (8a) of the second cylinder (8).
The follow-up sealing equipment for packing bags used in a filling machine of any of claims 1-3, characterized in that, a number of first rolling wheels (13) located at both sides of the track (3) respectively are installed at the bottom of the sliding seat (5); and the sliding seat (5) is matched with the track (3) by the first rolling wheel (13) in a rolling way.
The follow-up sealing equipment for packing bags used in a filling machine of claim 4, characterized in that, a damping bump (4) is fixed at the edge of the sliding seat (5); a guide sleeve (16) is fixed at the bottom of the track (3); a guide rod (15) is installed in the guide sleeve (16) and protrudes out of the upper end thereof; and a screw stem (19) protrudes into the guide sleeve (16) from the bottom thereof.
The follow-up sealing equipment for packing bags used in a filling machine of claim 1, characterized in that, a second spring (18) is installed between the guide rod (15) and the screw stem (19).
The follow-up sealing equipment for packing bags used in a filling machine of claim 5 or 6, characterized in that, the screw stem (19) is connected to the guide sleeve (16) by screw thread.
The follow-up sealing equipment for packing bags used in a filling machine of claim 7, characterized in that, a second rolling wheel (14) is installed at the upper end of the guild rod (15); the second rolling wheel (14) is rested against the downside of the damping bump (4); wherein the downside of the damping bump (4) is an inclined plane.
The follow-up sealing equipment for packing bags used in a filling machine of claim 8, characterized in that, a proximity switch (11) adjacent to the front end of the sliding seat (5) is fixed on the track (3).
The follow-up sealing equipment for packing bags used in a filling machine of claim 9, characterized in that, the first spring (10) is connected between the track (3) and the sliding seat (5) in such a manner that a bracket (12) is fixed at the front end of the track (3) and both ends of the first spring (10) are connected to the bracket (12) and the sliding seat (5) respectively.