CN211618211U

CN211618211U - Pre-feeding mechanism applied to tableware batch packaging equipment

Info

Publication number: CN211618211U
Application number: CN201922082223.8U
Authority: CN
Inventors: 吴洪德; 李坤; 刘石斌; 顾晓勤; 刘保军
Original assignee: University of Electronic Science and Technology of China Zhongshan Institute
Current assignee: University of Electronic Science and Technology of China Zhongshan Institute
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-10-02
Anticipated expiration: 2029-11-26

Abstract

The utility model discloses an use feeding mechanism in advance on tableware equipment for packing in batches, including pay-off frame in advance and pay-off platform in advance of alternate movement on the pay-off frame. When tableware is packaged, the tableware to be packaged is placed on the pre-feeding table, the pre-feeding table alternately moves to the position below the tableware clamp along the pre-feeding rack, and the tableware clamp clamps one of the pre-feeding tables and then takes the pre-feeding table up to clamp the other pre-feeding table; by adopting the structure, no time gap can be generated when the tableware is clamped, the clamping operation of the feeding table after clamping is finished is not required, the material is loaded and then the clamping operation is carried out, the time is saved, and the efficiency is improved.

Description

Pre-feeding mechanism applied to tableware batch packaging equipment

[ technical field ] A method for producing a semiconductor device

The application relates to a packaging machine, in particular to a pre-feeding mechanism applied to tableware batch packaging equipment.

[ background of the invention ]

With the acceleration of the life rhythm of people, the number of people who take meals or take out at a time is more and more. The change of living habits and consumption habits of people promotes the generation of disposable tableware. The disposable tableware is usually made by hermetically packaging the plastic tableware such as plastic knife and plastic fork, which is molded by injection, and the plastic tableware is kept in a hermetically packaged state before being opened and used by people, so that the plastic tableware is kept clean and sanitary, and the use of the plastic tableware is facilitated. The feeding mechanism for providing tableware to a packing machine usually comprises a conveying belt for placing containers with the tableware, after the tableware in the containers is clamped and taken out, the containers are taken out in an empty state, filled with the containers and then transported to a clamping point to be clamped, so that time gaps can occur when the tableware is clamped, the containers which are clamped completely are loaded with the materials and then clamped, time is consumed, and production efficiency is low.

[ summary of the invention ]

The invention is improved aiming at the problems in the prior art, and the technical problem to be solved by the invention is to provide a pre-feeding mechanism applied to tableware batch packaging equipment.

In order to solve the technical problem, the invention provides a pre-feeding mechanism applied to tableware batch packaging equipment, which comprises a pre-feeding rack and a pre-feeding table which moves on the pre-feeding rack alternately.

As an improvement of the pre-feeding mechanism applied to the tableware batch packaging equipment, the pre-feeding table comprises a first tableware pre-feeding table and a second tableware pre-feeding table, and the first tableware pre-feeding table and the second tableware pre-feeding table alternately move on the pre-feeding rack in an up-and-down parallel manner.

As an improvement of the pre-feeding mechanism applied to the tableware batch packaging equipment, a guide rail is arranged on the pre-feeding rack, and the pre-feeding table slides along the guide rail.

As an improvement of the pre-feeding mechanism applied to the tableware batch packaging equipment, a pre-feeding power mechanism for driving the pre-feeding table to slide on the guide rail is arranged on the pre-feeding rack.

As an improvement of the pre-feeding mechanism applied to the tableware batch packaging equipment, the pre-feeding power mechanism is in belt type transportation.

As an improvement of the pre-feeding mechanism applied to the tableware batch packaging equipment, the first tableware pre-feeding table and the second tableware pre-feeding table comprise a pre-feeding supporting table arranged on the pre-feeding rack and a pre-feeding box arranged on the pre-feeding supporting table.

As an improvement of the pre-feeding mechanism applied to the tableware batch packaging equipment, a tableware positioning cavity is arranged on the pre-feeding box, and a groove for the tableware clamp to enter is formed in the tableware positioning cavity along the edge direction of the pre-feeding box.

As an improvement of the pre-feeding mechanism applied to the tableware batch packaging equipment, the pre-feeding box is a hollow cylinder, the hollow cylinder is divided into a first semicircle and a second semicircle by taking the diameter of the hollow cylinder as a boundary line, a first slot for the tableware clamp to enter is formed in the tableware positioning cavity in the first semicircle along the outer circumferential direction, and a second slot for the tableware clamp to enter is formed in the tableware positioning cavity in the second semicircle along the inner circumferential direction.

As an improvement of the pre-feeding mechanism applied to the tableware batch packaging equipment, the pre-feeding boxes are equidistantly distributed along the length direction of the pre-feeding supporting platform.

Compared with the prior art, the invention has the following advantages:

the invention provides a pre-feeding mechanism applied to tableware batch packaging equipment, which comprises a pre-feeding rack and a pre-feeding table which alternately moves on the pre-feeding rack. When tableware is packaged, the tableware to be packaged is placed on the pre-feeding table, the pre-feeding table alternately moves to the position below the tableware clamp along the pre-feeding rack, and the tableware clamp clamps one of the pre-feeding tables and then takes the pre-feeding table up to clamp the other pre-feeding table; by adopting the structure, no time gap can be generated when the tableware is clamped, the clamping operation of the feeding table after clamping is finished is not required, the material is loaded and then the clamping operation is carried out, the time is saved, and the efficiency is improved.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below.

FIG. 1 is a perspective view of a device for bulk packaging of tableware;

fig. 2 is a perspective view of the packaging machine;

FIG. 3 is a perspective view of the transfer robot;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is a perspective view of a tableware pre-feeding box;

fig. 6 is a perspective view of the pre-feeding cassette.

[ detailed description ] embodiments

In order to make the technical problems, technical solutions and advantageous effects solved by the present application more clear and obvious, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

As known from the tableware batch packaging device shown in FIG. 1, the tableware batch packaging device comprises a tableware packaging machine 1, a pre-feeding mechanism 81 arranged on one side of the tableware packaging machine 1 and used for conveying tableware, and a transfer manipulator 82 arranged above the pre-feeding mechanism 81 and used for clamping the tableware placed on the pre-feeding mechanism 81 and then transferring the tableware to the tableware packaging machine 1. When tableware is packaged, the pre-feeding mechanism 81 transports the tableware to the lower part of the clamp of the transfer manipulator 82, and the transfer manipulator 82 clamps the tableware of the pre-feeding mechanism 81 and transfers the tableware to the corresponding feed opening on the tableware packaging machine 1, so that an automatic packaging bag production line is finally formed. Therefore, the structure for packaging tableware in batches realizes mechanization and automation, saves labor cost and improves packaging efficiency.

As can be known from the apparatus for packaging bulk tableware shown in fig. 3, the transfer robot 82 includes a transfer robot frame 821, a movable arm 822 moving toward the tableware packaging machine is connected to the transfer robot frame 821, and a tableware holding mechanism 824 for holding tableware is connected to an end of the movable arm 822 away from the transfer robot frame 821. By adopting the structure, the structure is simple and the operation is convenient.

As can be known from the device for packaging bulk tableware shown in fig. 3, the movable arm 822 includes a first movable arm 8221 connected to the transfer robot frame 821 for moving toward the tableware packaging machine 1, and a second movable arm 8222 is connected to an end of the first movable arm 8221 away from the transfer robot frame 821; the second movable arm 8222 is slidable on a vertical surface. A specific embodiment of the movable arm 822 is shown, in which the movable arm 822 includes a first movable arm 8221 movable along the tableware packaging machine 1 and a second movable arm 8222 sliding in a vertical direction, and when in use, the tableware gripping mechanism 824 is moved above the pre-feeding mechanism 81 by the first movable arm 8221, and the second movable arm 8222 slides in a vertical plane according to the distance between the tableware gripping mechanism 824 and the pre-feeding mechanism 81, so as to achieve the purpose of gripping tableware. With this structure, the second movable arm 8222 can adjust the distance between the second movable arm 8222 and the pre-feeding mechanism 81 by sliding on the vertical surface for the purpose of clamping, which is beneficial to clamping the tableware at different heights on the pre-feeding mechanism 81, without changing the second movable arm 8222 to adapt to different heights, thereby improving the flexibility of use.

As can be appreciated from the batch-packing device of fig. 3, the utensil holding mechanism 824 can rotate on a vertical plane; as an embodiment of the improved scheme of the tableware transferring device, the tableware clamping mechanism 824 can rotate on a vertical plane under the driving of power of an air cylinder and the like, and by adopting the structure, after the tableware clamping mechanism 824 clamps the tableware, the angle of the tableware clamping mechanism 824 clamping the tableware can be adjusted according to the opening position condition of the packaging bag on the tableware packaging machine 1, so that the tableware can smoothly enter the packaging bag, and the blanking step is realized. By adopting the structure that the tableware clamping mechanism 824 can rotate on the vertical surface, the flexibility of the tableware clamping mechanism 824 is improved, and the tableware clamping mechanism can adapt to the opening conditions of different packaging bags.

As can be seen from the batch packaging apparatus for tableware shown in fig. 3, the tableware holding mechanism 824 includes a supporting plate 8241 disposed on the movable arm 822, and a plurality of tableware clamps 8242 are disposed on the supporting plate 8241. The drawing shows an embodiment of the tableware clamping mechanism 824, the supporting plate 8241 is provided with a first tableware clamp and a second tableware clamp at two ends of the supporting plate in the length direction, and by adopting the mechanism, once operation is realized, two tableware can be clamped simultaneously, and once the supporting plate moves towards the tableware packaging machine 1, the throwing of the two tableware can be realized, the number of the thrown tableware is increased while the operation times are saved, and the transfer efficiency is improved.

As shown in fig. 4, a first power mechanism 11 is disposed at a connection position between the supporting plate 8241 and the movable arm 822, and the first power mechanism 11 drives the supporting plate 8241 to rotate in a plane parallel to the supporting plate 8241. As an example of the improvement of the tableware holding mechanism 824, with this structure, the supporting plate 8241 can rotate on a vertical plane and a plane parallel to the supporting plate 8241, so that the gripped tableware can be smoothly put into the bag of the laughing material station corresponding to the tableware packaging machine 1 regardless of the orientation of the chuck on the tableware clamp 8242; with this structure, the support plate 8241 can slide on a vertical plane and rotate on a plane parallel to the support plate 8241, and the tableware can be gripped when the tableware placed in the pre-feeding box 812 is in different directions. Therefore, by adopting the structure, the requirements of clamping the tableware and throwing the tableware at multiple angles can be realized. The first power mechanism 11 is a combination of a servo motor and a speed reducer.

As can be known from the device for packaging tableware in bulk as shown in fig. 4, a second power mechanism 12 is disposed at the connection between the tableware clamps 8242 and the supporting plate 8241, and the second power mechanism 12 drives the tableware clamps 8242 to slide on the surface perpendicular to the supporting plate 8241 and generates a displacement difference between the tableware clamps 8242 on the surface perpendicular to the supporting plate 8241; the tableware jigs 8242 are parallel to the surface of the supporting plate 8241. As can be seen from the figure, the tableware clamps 8242 are respectively disposed at both sides of the supporting plate 8241 in the length direction, the tableware clamps 8242 at both sides respectively clamp the tableware groups, the movable arm 822 approaches the tableware packaging machine 1, the tableware clamping mechanism 824 rotates on the vertical plane, the tableware clamps 8242 at both sides of the supporting plate 8241 are at different heights on the vertical plane, after the tableware close to the upper portion of the packaging bag on the tableware packaging machine 1 is released into the packaging bag, the second power mechanism 12 pushes the tableware clamp 8242 at the upper portion in the direction away from the supporting plate 8241 to generate a displacement difference with the tableware clamp 8242 at the lower portion, the first movable arm 8221 and the second movable arm 8222 are then utilized to drive the tableware clamping mechanism 824 to move in the horizontal direction and the vertical direction, and finally the tableware clamp 8242 at the upper portion is moved to the upper portion of the packaging bag on the tableware packaging machine 1, and finally, releasing the tableware into the packaging bag to finish secondary throwing. This structure is mainly directed to the tableware clamp 8242 having a grasping direction parallel to the plane where the supporting plate 8241 is located. In the process of throwing in the tableware, after the tableware group of arranging the below in puts in, the centre gripping of arranging the top has the tableware anchor clamps 8242 is in under the promotion of second power unit 12 with the below tableware anchor clamps 8242 perpendicular to produce the displacement difference on the face of backup pad 8241, the cooperation of deuterogamying the digging arm in horizontal direction and vertical direction, the tableware of arranging the top in finally has moved the position of packing sack, realizes throwing in of tableware smoothly. By adopting the structure, the tableware at different heights is put in under the condition that the supporting plate 8241 rotates once on the vertical surface, the problem that the supporting plate 8241 which clamps the tableware needs larger operation space when rotating is solved, and the possibility that the tableware in different shapes interferes with other parts in the machine is avoided.

As can be seen from the batch packaging apparatus for tableware shown in fig. 4, the tableware clamps 8242 comprise an attachment column 82421 attached to the support plate 8241, and a clamping head 82422 which can be moved toward or away from each other is attached to one end of the attachment column 82421 away from the support plate 8241. By adopting the structure, the structure is simple, the clamping operation is simple, and the clamping effect is good.

As can be seen from the apparatus for packaging a batch of tableware shown in fig. 5, the pre-feeding mechanism 81 includes a pre-feeding housing 811 and a pre-feeding table 812 alternately moving on the pre-feeding housing 811. By adopting the structure, the injection molding machine puts the injection molded tableware on the pre-feeding table 812, and the tableware clamp can be continuously clamped without waiting after the clamp on the tableware packaging machine clamps the tableware on the injection molding machine, so that the time is saved, and the efficiency is improved.

As can be seen from the apparatus for batch packaging of tableware shown in fig. 5, the pre-feeding table 812 includes a first tableware pre-feeding table 8123 and a second tableware pre-feeding table 8124, and the first tableware pre-feeding table 8123 and the second tableware pre-feeding table 8124 are alternately moved on the pre-feeding rack 811 in an up-and-down parallel manner. With this structure, the injection molding machine places the injection molded tableware on the first tableware pre-feeding table 8123, the first tableware pre-feeding table 8123 moves to the lower side of the transfer robot 82, after the transfer robot 82 finishes clamping the tableware on the first tableware pre-feeding table 8123, the first tableware pre-feeding table 8123 moves to the direction away from the transfer robot 82, at this time, the transfer robot 82 moves downwards to be close to the second tableware pre-feeding table 8124 with prepared tableware, and the clamping continues, and the operation is repeated again, and the first tableware pre-feeding table 8123 and the second tableware pre-feeding table 8124 alternately appear below the injection molding machine and below the transfer robot 82. By adopting the structure, no time gap is generated when the transfer manipulator 82 clamps the tableware, and the clamping operation of the clamping completed feeding table after loading the materials is not required, so that the time is saved, and the efficiency is improved.

As can be seen from the batch packaging apparatus for tableware shown in fig. 5, the pre-feeding frame 811 is provided with a guide rail 813, and the pre-feeding table 812 slides along the guide rail 813; a pre-feeding power mechanism 814 for driving the pre-feeding table 812 to slide on the guide rail 813 is arranged on the pre-feeding frame 811; the pre-feeding power mechanism 814 is belt type transportation. The figure shows a scheme of a specific pre-feeding power mechanism 814 used when the pre-feeding table 812 moves alternately on the pre-feeding rack 811, and by adopting the structure, the structure is simple, the implementation is convenient, and the using effect is good.

As can be seen from fig. 5 and 6, the batch packaging apparatus for tableware, the first tableware pre-feeding table 8123 and the second tableware pre-feeding table 8124 include a pre-feeding support table 8121 provided on the pre-feeding frame 811 and a pre-feeding box 8122 provided on the pre-feeding support table 8121. A tableware positioning cavity 8125 is formed in the pre-feeding box 8122, and a slot 8126 for a tableware clamp to enter is formed in the tableware positioning cavity 8125 along the edge direction of the pre-feeding box 8122. The pre-feeding box 8122 is a hollow cylinder, the hollow cylinder is divided into a first semicircle 8127 and a second semicircle 8128 by taking the diameter of the hollow cylinder as a dividing line, a first notch 81261 for a tableware clamp to enter is formed in the tableware positioning cavity 8125 on the first semicircle 8127 along the outer circumferential direction, and a second notch 81262 for the tableware clamp to enter is formed in the tableware positioning cavity 8125 on the second semicircle 8126 along the inner circumferential direction. By adopting the structure, the effects of taking materials once, transporting once and repeatedly clamping for many times can be realized, and the efficiency is effectively improved.

As can be seen from the apparatus for packaging tableware in bulk as shown in fig. 5, the pre-feeding boxes 8122 are equally spaced along the length of the pre-feeding support table 8121. By adopting the structure, the effects of taking materials once, transporting once and repeatedly clamping for many times can be realized, and the efficiency is effectively improved.

The device for packaging tableware in batches as shown in fig. 2 can know that the device for packaging tableware in batches, the tableware packaging machine 1 comprises a main body frame 101, a plurality of groups of packaging bag clamping mechanisms 104 for clamping packaging bags are arranged on the main body frame 101 at intervals, a packaging bag feeding device 105 arranged on the packaging bag clamping mechanism 104, a bag opening device 106 used for opening the packaging bags on the packaging bag clamping mechanism 104, a bag opening regulating device 107 used for regulating the opening of the packaging bags on the packaging bag clamping mechanism 104, a pressing device 109 used for pressing tableware in the packaging bags on the packaging bag clamping mechanism 104, and a dividing power mechanism 103 arranged on the dividing turntable 102 and used for dividing the packaging bags are arranged on the main body frame 101 at intervals along the circumferential direction, and the packaging bag clamping mechanism 104 is respectively provided with a bag feeding device 105 arranged on the packaging bag clamping mechanism 104, A bag sealing device 1010 for sealing the mouth of the bag on the bag holding mechanism 104, and a feed opening 108 for receiving the tableware transferred by the transfer robot 82. During the use, place the wrapping bag give on the bagging apparatus 105, put after giving get bag manipulator centre gripping wrapping bag on the bagging apparatus 105 on the clip of wrapping bag fixture 104, the centre gripping has the wrapping bag fixture 104 is in do the graduation and rotate on the graduation carousel 102, rotate in proper order open bagging apparatus 106 the regular device 107 of sack tableware transfer device 108 closing device 109 the below of envelope device 1010 accomplishes opening of sack, the regulation of sack mouth, the putting into of tableware, the compressing tightly of tableware and the tightness of sack, a series of actions of sealing of sack. Therefore, the mechanical parts required for completing the tableware packaging process are respectively arranged above the packaging bag clamping mechanisms on the indexing turntable, and the packaging machine is simple in structure, small in occupied area and easy to operate.

As can be seen from the batch packaging device of fig. 2, the bag holding mechanism 104 includes swing arms connected to the indexing table 102 and capable of moving toward or away from each other, and a clamp is disposed at an end of the swing arms away from the indexing table 102. By adopting the structure, the clamp is used for clamping two sides of the packaging bag, the bag opening of the packaging bag is tightened by relatively keeping the swing arm away, and then the packaging bag is rotated to a corresponding station through the indexing turntable 102 for operation.

As can be seen from the apparatus for packaging tableware in bulk as shown in fig. 2, the bag feeder 105 includes a storage rack disposed on the rack 101 for storing the packing bags and a transfer gripper for gripping the packing bags placed on the storage rack and transferring the packing bags to the bag gripper 104. As can be seen from the figure, the storage rack is arranged on the main body rack 101, one end of the transfer clamp is connected to the main body rack 101, and the end, far away from the main body rack 101, of the transfer clamp capable of being repeatedly opened and closed for clamping the packaging bag is arranged at one end of the main body rack 101.

As can be seen from the device for packaging batches of cutlery shown in fig. 2, the bag opener 106 comprises suction cups which are arranged to be relatively close to or relatively far from each other in the opening direction of the bag mouth. As can be seen from the figure, the bag opening device 106 includes a bag opening support column with one end connected to the main body frame 101, the bag opening support column is far away from one end of the main body frame 101, and the suction cup is relatively close to or relatively far away from the opening direction of the bag opening. By adopting the structure, the structure is simple, and the bag opening of the packaging bag on the packaging bag clamping mechanism 4 can be effectively opened.

As known from the device for packaging a batch of tableware shown in FIG. 2, the bag opening regulating device 107 includes a shutter plate which is placed in the bag opening of the packaging bag and is opened and closed back and forth. Known by the figure, regular device 107 of sack includes that one end is connected the regular support column of sack on the main part frame 101, the regular support column of sack is kept away from the one end of main part frame 101 is equipped with the opening-closing plate, the opening-closing plate can be opened and shut in order to reach the regular purpose of sack in the wrapping bag sack repeatedly.

As can be seen from the batch packaging device of fig. 2, the pressing device 109 comprises a pressing plate which can be placed in the package and moved in a vertical plane. As can be seen from the figure, the pressing device 109 comprises a pressing support column with one end connected to the main body frame 101, and the end of the pressing support column away from the main body frame 101 is provided with a pressing plate which can be placed in the packaging bag and can reciprocate on the vertical plane for the purpose of pressing the tableware.

As can be appreciated from the apparatus for packaging batches of cutlery shown in fig. 2, the sealing device 1010 includes heat seal panels that are either relatively close to or relatively far from each other in the opening direction of the bag mouth. As can be seen from the figure, the bag sealing device 1010 includes a bag sealing support column with one end connected to the main body frame 101, a heat sealing plate is arranged at one end of the bag sealing support column far away from the main body frame 101, and the heat sealing plate is relatively close to or relatively far away from the opening direction of the bag opening of the bag to achieve the purpose of heat sealing the bag opening.

As can be seen from the batch-type packing apparatus shown in fig. 2, the feed opening 108 is disposed on the bag holding mechanism 104 for receiving the dishes transferred by the transfer robot 82.

The working principle of the pre-feeding mechanism applied to the tableware batch packaging equipment in the scheme of the invention is as follows:

Claims

1. The pre-feeding mechanism applied to the tableware batch packaging equipment is characterized by comprising a pre-feeding rack (811) and a pre-feeding table (812) moving on the pre-feeding rack (811) alternately, wherein the pre-feeding table (812) comprises a first tableware pre-feeding table (8123) and a second tableware pre-feeding table (8124), and the first tableware pre-feeding table (8123) and the second tableware pre-feeding table (8124) move on the pre-feeding rack (811) alternately in an up-and-down parallel mode.

2. The pre-feeding mechanism applied to the tableware batch packaging equipment according to the claim 1 is characterized in that the pre-feeding frame (811) is provided with a guide rail (813), and the pre-feeding table (812) slides along the guide rail (813).

3. The pre-feeding mechanism applied to the tableware batch packaging equipment as claimed in claim 2, wherein a pre-feeding power mechanism (814) for driving the pre-feeding table (812) to slide on the guide rail (813) is arranged on the pre-feeding frame (811).

4. The pre-feeding mechanism applied to the tableware batch packaging equipment as claimed in claim 3, wherein the pre-feeding power mechanism (814) is a belt type transportation.

5. The pre-feeding mechanism applied to the tableware batch packaging equipment as claimed in claim 1, wherein the first tableware pre-feeding table (8123) and the second tableware pre-feeding table (8124) comprise a pre-feeding support table (8121) provided on the pre-feeding rack (811) and a pre-feeding box (8122) provided on the pre-feeding support table (8121).

6. The pre-feeding mechanism applied to tableware batch packaging equipment according to claim 5, characterized in that a tableware positioning cavity (8125) is arranged on the pre-feeding box (8122), and a slot (8126) for a tableware clamp to enter is formed in the tableware positioning cavity (8125) along the edge direction of the pre-feeding box (8122).

7. The pre-feeding mechanism applied to tableware batch packaging equipment as claimed in claim 6, wherein the pre-feeding box (8122) is a hollow cylinder, the hollow cylinder is divided into a first semicircle (8127) and a second semicircle (8128) by taking the diameter of the hollow cylinder as a boundary line, the tableware positioning cavity (8125) on the first semicircle (8127) is provided with a first slot (81261) for the tableware clamp to enter along the outer circumferential direction, and the tableware positioning cavity (8125) on the second semicircle (8128) is provided with a second slot (81262) for the tableware clamp to enter along the inner circumferential direction.

8. The pre-feeding mechanism applied to tableware batch packaging equipment as claimed in claim 5, wherein said pre-feeding boxes (8122) are equally distributed along the length direction of said pre-feeding support platform (8121).