CN209806959U

CN209806959U - Conveyer and tunnel furnace exit end structure

Info

Publication number: CN209806959U
Application number: CN201821362434.6U
Authority: CN
Inventors: 邵鸿飞
Original assignee: GUANGZHOU BAKE OVEN MACHINERY Co Ltd
Current assignee: GUANGZHOU BAKE OVEN MACHINERY Co Ltd
Priority date: 2018-08-22
Filing date: 2018-08-22
Publication date: 2019-12-20
Anticipated expiration: 2028-08-22

Abstract

In order to solve among the prior art tunnel furnace end and to set up shedder, it occupies certain space, causes the terminal not compact enough problem of structure of tunnel furnace, the utility model provides a conveyer, including first conveying and the terminal second conveying of intercommunication first conveying, second transition conveying highly suits with first conveying. And a tunnel furnace outlet end structure which is provided with the conveying device. The first conveying piece is used for receiving a baking tray which is discharged from the tunnel furnace and is filled with baked bread, the baking tray slides from the first conveying piece to the second conveying piece, potential energy obtained by the baking tray from height drop in the process is converted into kinetic energy for demolding the bread when the baking tray impacts the second conveying piece, and automatic demolding is completed. Compare in current conveyer need set up shedder, the utility model provides a conveyer structure is more compact, saves the initial investment and the fortune dimension expense of production line acquisition facility.

Description

Conveyer and tunnel furnace exit end structure

Technical Field

The utility model belongs to the technical field of the curing machinery and specifically relates to a conveyer and a tunnel furnace outlet end structure.

Background

Tunnel ovens (food processing) are tunnel-type mechanical devices that accomplish the baking of food products by conduction, convection, and radiation of heat. The oven body is generally very long, 6 meters at least and 60-80 meters long. The oven chamber is a long and narrow tunnel and the oven of smaller width is typically 80cm to 140cm wide. A continuously operating conveyor system is located within the tunnel. When the food is baked, the food is moved relatively to the electric heating element or the direct-fired burning rod by the conveying chain plate, the steel belt or the net belt. Thereby completing the work of uniform baking and conveying. The oven can be continuously produced, has high production efficiency, saves manpower and has stable baking quality. At present, because manual demoulding is too troublesome and the efficiency of an automatic production line is reduced, the tail end of the existing tunnel oven for baking bread, cakes or desserts is provided with a demoulding device, baking trays for bearing the bread or other desserts enter the demoulding device after leaving the tunnel oven, and enter the next station through a conveyor belt after the demoulding process and carry out the next process.

The existing tunnel oven has the defects that for bread, as long as oil is brushed on a baking tray before baking, the baked bread is easy to demould, and a demoulding device is independently arranged to demould the bread, so that the bread is too large and small in size, and the demoulding device needs to occupy a certain space, so that the structure at the tail end of the tunnel oven is not compact enough. However, if a demoulding device is not arranged and manual demoulding is adopted, the efficiency is too low, and the automation degree of the production line is not high enough.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a conveying device which has a compact structure and an automatic demoulding function and a tunnel furnace outlet end structure.

A conveying device comprises a first conveying piece and a second conveying piece communicated with the tail end of the first conveying piece, wherein the mounting position of the second conveying piece is lower than that of the first conveying piece, so that a height difference for demolding is formed between the second conveying piece and the first conveying piece.

Further, a second transition conveying piece with the conveying speed not lower than the conveying speed of the tail end of the first conveying piece is arranged between the tail end of the first conveying piece and the second conveying piece, and the height of the second transition conveying piece is the same as that of the first conveying piece.

Furthermore, a first position sensor and a first driving mechanism for driving the first conveying piece are arranged at the tail end of the first conveying piece, a PLC system for controlling the first driving mechanism to accelerate is arranged, and the first position sensor is used for detecting the position of the target object on the first conveying piece and sending a position signal to the PLC system.

Furthermore, a second position sensor and a second driving mechanism for driving the second conveying member are arranged on the second conveying member, the second driving mechanism is controlled by the PLC system to start and stop, and the second position sensor is used for detecting the position of the target object on the second conveying member and sending a position signal to the PLC system.

Further, the height drop is 5-10 cm.

Further, the conveying device is used for communicating with the outlet end of the tunnel furnace, the first conveying piece is a straight conveying belt in the same direction as the tunnel furnace, and the second conveying piece is a transverse conveying belt perpendicular to the tunnel furnace; the first conveying piece and the second conveying piece are both chain plate conveying belts.

Further, the first position sensor is a photosensor.

Further, the second position sensor is a magnetic proximity sensor.

Furthermore, a plurality of the target objects which are arranged in a row on the first conveying member and slide down to the second conveying member together form a target object group, a plurality of the second position sensors are arranged on the second conveying member to form a second position sensor group, and one second position sensor correspondingly detects the position of one target object.

Further, the conveying device is provided; and a first transition conveying member is arranged between the outlet end of the tunnel furnace and the conveying device.

The first conveying piece is used for receiving a baking tray which is discharged from the tunnel furnace and is filled with baked bread, the baking tray slides from the first conveying piece to the second conveying piece, potential energy obtained by the baking tray from height drop in the process is converted into kinetic energy for demolding the bread when the baking tray impacts the second conveying piece, and automatic demolding is completed. Compare in current conveyer need set up shedder, the utility model provides a conveyer structure is more compact, saves the initial investment and the fortune dimension expense of production line acquisition facility.

Drawings

FIG. 1 is a schematic structural view in one direction of the present invention;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a schematic structural view in another direction of the present invention;

FIG. 4 is an enlarged schematic view of the mounting of the second position sensor.

In the figure: 10. a second conveying member; 11. a second drive mechanism; 20. a first conveying member; 30. a first transition conveyor; 40. a first position sensor; 50. a second transition conveyor; 51. a high-speed motor; 60. a second position sensor.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

As shown in fig. 1 to 4, a conveying device comprises a first conveying member 20 and a second conveying member 10 communicated with the tail end of the first conveying member, wherein the second conveying member 10 is arranged at a position lower than the first conveying member 20, so that a height difference for demoulding is formed between the second conveying member 10 and the first conveying member 20.

The first conveying piece 20 is used for receiving a baking tray which is discharged from the tunnel furnace and is filled with baked bread, the baking tray slides from the first conveying piece 20 to the second conveying piece 10, potential energy obtained by the baking tray from height drop in the process is converted into kinetic energy for demolding the bread when the baking tray impacts the second conveying piece 10, and automatic demolding is completed. Compare in current conveyer need set up shedder, the utility model provides a conveyer structure is more compact, saves the initial investment and the fortune dimension expense of production line acquisition facility.

Further, a second transition conveying member 50 with a conveying speed not lower than the conveying speed of the tail end of the first conveying member 20 is arranged between the tail end of the first conveying member 20 and the second conveying member 10, and the height of the second transition conveying member 50 is the same as that of the first conveying member 20. The second transition conveyor 50 is driven by a high speed motor 51 and maintains a constant speed motion. It should be noted that the high-speed motor 51 is referred to only for convenience of understanding, and is not limited to the speed thereof. The second transition conveying part 50 is arranged to provide enough kinetic energy for the baking tray, so that the baking tray can stably slide from the first conveying part 20 to the second conveying part 10, and the phenomenon that the baking tray is laterally turned over in the sliding process due to insufficient speed is avoided.

Further, the height drop is 5-10 cm. According to practical experience, if the height drop is less than 5cm, the acting force for converting potential energy into demoulding is insufficient, and the bread can not be completely separated from the baking tray; if the height is more than 10cm, the acting force for converting potential energy into demoulding is easy to be too large, so that the bread can be directly flown out of the baking tray after demoulding.

Further, a first position sensor 40 and a first driving mechanism for driving the first conveying member 20 are arranged at the tail end of the first conveying member 20, a PLC system for controlling the first driving mechanism to accelerate is arranged, and the first position sensor 40 is used for detecting the position of the target object on the first conveying member 20 and sending a signal to the PLC system after reaching the tail end of the first conveying belt. The first drive mechanism may be a motor. When the conveying device is in a conveying state, the first conveying part 20 is driven by the first driving mechanism and runs at a lower speed, when the first position sensor 40 detects that the target object enters a first designated position at the tail end of the first conveying part 20, a signal is transmitted to the PLC system, and the PLC system controls the first driving mechanism to run in an accelerated mode to drive the first conveying part 20 to run in an accelerated mode. The function is as follows: if the second transition conveying piece 50 is not arranged, the acceleration action of the first conveying piece 20 can also provide kinetic energy for the target object (baking tray with bread) to a certain extent, so that the phenomenon that the baking tray rolls over during the sliding process due to insufficient speed is avoided; if the second transition conveying piece 50 is arranged, the target object completes the acceleration process on the first conveying piece 20, the target object is prevented from directly entering the second transition conveying piece 50 at a lower speed on the first conveying piece 20 (the acceleration process is completed on the second transition conveying piece 50), and the phenomenon that the target object turns over in the acceleration process due to the fact that the instant acceleration is too large due to too short acceleration time is avoided.

Further, a second position sensor 60 and a second driving mechanism 11 for driving the second conveying member 10 are arranged on the second conveying member 10, the second driving mechanism 11 is controlled by a PLC system to start and stop, and the second position sensor 60 is used for sending a signal to the PLC system when the detection target object reaches a second designated position at the position of the second conveying member 10. The second drive mechanism 11 may be a motor. When the second conveying member 10 is at a static state, after the second position sensor 60 detects that the target object slides down from the first conveying member 20 (or the second transition conveying member 50) to the second conveying member 10, the second position sensor 60 transmits a signal to the PLC system, and the PLC system controls the second driving mechanism 11 to start, so that the second conveying member 10 conveys the demolded target object to a next station for a next process, and then the second conveying member 10 stops until the second position sensor 60 detects that a next batch of target objects slides down to the second conveying member 10, and the second driving mechanism 11 is started again.

It should be noted that, as a preferred embodiment, the PLC model is omron-CP1L-M40 DR-A.

Further, the first position sensor 40 is a photosensor. Preferably, the photoelectric sensor is of the omron-E3Z-R61 (optical grating), and the output end of the photoelectric sensor is connected with the input end of the PLC system.

Further, the second position sensor 60 is a magnetic proximity sensor. Preferably, the model number is OMRON-E2E-X7D 1-N (proximity sensor) or OMRON-D4V-8112Z (travel switch), and the output end of the magnetic proximity sensor is connected with the input end of the PLC system.

Further, the first transfer member 20 may be a straight transfer belt in the same direction as the tunnel furnace, and the second transfer member 10 may be a cross transfer belt perpendicular to the tunnel furnace; the first conveying member 20 and the second conveying member 10 are both link conveyors. The bearing capacity of the chain plate conveyor belt is stronger, and the bending of the conveyor belt by a target object is avoided.

Further, a plurality of objects arranged in a row on the first conveying member and sliding down to the second conveying member 10 together form an object group, a plurality of second position sensors 60 are arranged on the second conveying member 10 to form a second position sensor group, and one second position sensor 60 correspondingly detects the position of one object. In the case where there are a plurality of objects in the same batch of discharged products, if there is only one second position sensor 60, it cannot be guaranteed that all the objects fall to the second designated position to activate the second driving mechanism 11. Therefore, the second position sensors 60 corresponding to the number of the objects are arranged, one second position sensor 60 correspondingly detects one object, and the second conveying member 10 is started until all the objects fall to the second designated position.

A tunnel furnace outlet end structure is provided with the conveying device, and a first transition conveying member 30 is arranged between the tunnel furnace outlet end and a first conveying member 20. Generally, there is a certain gap between the exit end of the tunnel furnace and the first transfer member 20, and the first transition transfer member 30 provided therebetween functions to smoothly enter the object into the first transfer member 20.

Specifically, the conveying member may be a conveyor belt, a rotating shaft, a roller or a rolling member.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. A conveyer, includes first conveying member and communicates the terminal second conveying member of first conveying member, its characterized in that: the second conveying piece is arranged at a position lower than the first conveying piece, so that a height difference for demoulding is formed between the second conveying piece and the first conveying piece; and a second transition conveying piece with the conveying speed not lower than the conveying speed of the tail end of the first conveying piece is further arranged between the tail end of the first conveying piece and the second conveying piece, and the height of the second transition conveying piece is the same as that of the first conveying piece.

2. A conveyor as in claim 1 wherein: the tail end of the first conveying piece is provided with a first position sensor and a first driving mechanism used for driving the first conveying piece, and is also provided with a PLC system used for controlling the first driving mechanism to accelerate, and the first position sensor is used for detecting the position of a target object on the first conveying piece and sending a position signal to the PLC system.

3. A conveyor as in claim 1 wherein: the second conveying member is provided with a second position sensor and a second driving mechanism used for driving the second conveying member, the second driving mechanism is controlled by the PLC system to start and stop, and the second position sensor is used for detecting the position of a target object on the second conveying member and sending a position signal to the PLC system.

4. A conveyor as in claim 1 wherein: the height drop is 5-10 cm.

5. A conveyor as in claim 1 wherein: the conveying device is used for communicating with the outlet end of the tunnel furnace, the first conveying piece is a straight conveying belt in the same direction as the tunnel furnace, and the second conveying piece is a transverse conveying belt vertical to the tunnel furnace; the first conveying piece and the second conveying piece are both chain plate conveying belts.

6. A conveyor as in claim 2 wherein: the first position sensor is a photosensor.

7. A conveyor as in claim 3 wherein: the second position sensor is a magnetic proximity sensor.

8. A conveyor as in claim 3 wherein: the plurality of target objects which are arranged in a row on the first conveying piece and slide to the second conveying piece together form a target object group, the second conveying piece is provided with a plurality of second position sensors to form a second position sensor group, and one second position sensor correspondingly detects the position of one target object.

9. The utility model provides a tunnel furnace exit end structure which characterized in that: having a delivery device according to any of claims 1-8; and a first transition conveying member is arranged between the outlet end of the tunnel furnace and the conveying device.