CN100551710C - Paper feeding mechanism - Google Patents

Abstract

The invention is a paper feeding mechanism for conveying processed paper, comprising: a rotating body; a support member having a first surface, a second surface, and at least one receiving slot; the gear is arranged corresponding to the rotating body and is placed into the accommodating groove from the second surface of the supporting piece; a clamping plate having at least one opening corresponding to the at least one gear for being fixed on the second surface of the support member so that the at least one gear is fixed in the at least one accommodating groove of the support member and a part of the structure of the at least one gear penetrates through the at least one opening; and the elastic pressing and holding element is arranged on the first surface of the supporting part and used for elastically pressing at least one gear so that the at least one gear is contacted with at least one corresponding rotating body to convey the paper.

Description

Paper feeding mechanism

(1) Technical field

The invention relates to a paper feeding mechanism, especially a paper feeding mechanism suitable for business machines.

(2) Background technology

With the rapid advancement of electronic technology, almost all routine work in offices today is closely related to business machines, such as copiers and printers, etc., so these business machines can be said to be indispensable information equipment in the office. Usually, general business machines will There is a paper feeding mechanism and a paper feeding mechanism. After the business machine receives the instruction to start, the paper guide mechanism will send the paper to a predetermined position inside the business machine in sequence. After copying, faxing or scanning, etc., The paper feeding mechanism will send the processed paper to the stacking bin at the paper output of the MFP.

However, the existing paper feeding mechanism mainly uses a gear to press on the paper, one side is in contact with the paper and the other side is used to transport the paper in a rotating manner, and in order for the paper feeding mechanism to contact the paper, the shaft of the gear needs to be elastic Only components can transmit the pressure to the paper, but this structure will not be able to provide stable pressure to each paper due to the difference in the thickness of the conveyed paper.

When the existing paper feeding mechanism is suitable for office machines such as printers, when the ink droplets ejected from the ink tank of the printer are large, and the paper itself is made of a material that is not easy to absorb ink or the ink droplets are ejected to the paper. In poor time, once the gear transmits excessive pressure to the paper due to the thickness of the paper, the ink will adhere to the gear. In addition to causing the original paper to be printed unclear, the ink originally attached to the surface of the gear It will also be attached to the subsequent conveyed paper, causing the paper to be polluted, which will affect the printing quality, and when the surface of the subsequently conveyed paper adheres to the ink on the gear, it will cause the surface of the paper to be uneven, which will aggravate the gear again. The pressure transmitted to the paper affects the stability of the paper conveyed by the paper feeding mechanism.

Therefore, how to develop a paper feeding mechanism that can improve the above-mentioned prior art is an urgent problem to be solved at present.

(3) Contents of the invention

The main purpose of the present invention is to provide a paper feeding mechanism, which uses elastic pressing elements to compress the gears fixed between the support member and the clamping plate, and mainly uses the elastic force of the elastic pressing elements to make the gears respond to the paper. It can move up and down according to the difference in the thickness of the paper, which can reduce the pressure on the paper, and make the gear contact with the corresponding rotating body to transport the paper, so as to solve the problem that the traditional paper feeding mechanism cannot provide stable pressure due to the difference in the thickness of the paper. To each paper, the ink on the paper will adhere to the gear and transfer to the subsequent paper, causing the paper to be polluted, which will affect the printing quality and the stability of the paper transmission is insufficient.

In order to achieve the above object, a broader embodiment of the present invention is to provide a paper feeding mechanism for sending a processed paper, which includes: a supporting member, which has a first surface and a second surface and at least one accommodating groove; at least one gear is put into the at least one accommodating groove from the second surface of the supporting member; a clamping plate has at least one opening corresponding to the at least one gear , and fixed on the second surface of the supporting member, so that the at least one gear is fixed in the at least one accommodating groove of the supporting member, and a part of the structure of the at least one gear passes through the at least one opening; an elastic pressing element, which is arranged on the first surface of the supporting member, and is used for elastically pressing on the at least one gear, so that the at least one gear part structure can pass through the at least one opening and move in response to the difference in paper thickness, The sheet is conveyed to and from a rotating body.

According to the idea of the present invention, the at least one gear has a body and a protruding shaft respectively.

According to the idea of the present invention, wherein the at least one accommodating groove of the supporting member respectively includes a plurality of protrusions and a slot hole, the body between two adjacent protrusions is used to accommodate the gear, the gear The shaft part is accommodated in the plurality of protrusions.

According to the conception of the present invention, wherein the elastic pressing element comprises a plate and at least one holding piece, the plate is arranged on the first surface of the rigid shaft, and the holding piece is used to press the gear. Shaft.

Another broader implementation aspect of the present invention is to provide a paper feeding mechanism for conveying a processed paper, which includes: a rotating body; a supporting member, which has a first surface and a second surface and at least one accommodating groove; at least one gear, respectively having a body and at least one shaft rod, and corresponding to the rotating body, which is inserted into the at least one accommodating groove from the second surface of the supporting member; A clamping plate, which has at least one opening corresponding to the body of the at least one gear, and is fixed on the second surface of the support, so that the at least one gear is fixed on the support The at least one accommodating groove, and the body of the at least one gear passes through the at least one opening; an elastic pressing element, which is arranged on the first surface of the supporting member and has at least one holding member, the The pressing member is pressed on the protruding shaft of the at least one gear, so that the body of the at least one gear contacts with the corresponding rotating body for conveying the paper.

According to the idea of the present invention, the rotating body is a roller, which presses against one side of the paper relative to the gear, and is used to drive the paper to move.

According to the idea of the present invention, wherein the at least one accommodating groove of the supporting member respectively includes a plurality of protrusions and a slot hole, and between two adjacent protrusions is the body for accommodating the gear. The shaft part is accommodated in the plurality of protrusions.

According to the idea of the present invention, the elastic pressing element further includes a plate connected to the at least one pressing element and disposed on the first surface of the supporting element.

(4) Description of drawings

Fig. 1a is a schematic diagram of an exploded structure of a paper feeding mechanism in a preferred embodiment of the present invention.

Fig. 1b is a schematic diagram of the rear structure of the support shown in Fig. 1a.

Fig. 1c is a schematic structural view of the clamping plate shown in Fig. 1a being fixed on the second surface of the support.

Fig. 2a is a schematic diagram of the assembled structure of Fig. 1a.

Fig. 2b is a schematic diagram of the A-A' cross-sectional structure of Fig. 2a.

Fig. 3 is a structural diagram of assembling the paper feeding mechanism of the present invention inside the printer.

(5) specific implementation

Some typical embodiments embodying the features and advantages of the present invention will be described in detail in the description in the following paragraphs. It should be understood that the invention is capable of various changes in different aspects without departing from the scope of the invention, and that the description and illustrations therein are illustrative in nature and not limiting. this invention.

Please refer to Fig. 1 a, which is a schematic diagram of an exploded structure of a paper feeding mechanism in a preferred embodiment of the present invention. , an elastic pressing element 14 and a rotating body 15 (as shown in Figure 2a), wherein the rotating body 15 can be a roller, and its relative gear 12 is pressed against one side of the paper 16 to drive the paper 16 to move, and this The paper feeding mechanism 1 of the invention can be applied to office machines such as copiers, printers or scanners. The elastic force of the elastic pressing element 14 is mainly used to make the gear 12 move up and down in response to the thickness difference of the paper, which can reduce the pressure on the paper. Send the printed or scanned paper to the stacking bin at the output of the MFP.

In this embodiment, the gear 12 is mainly composed of a body 121 and a shaft 122, which is arranged corresponding to the rotating body 15 (as shown in Figures 2a and 2b), wherein the shaft 122 is arranged on the left and right sides of the body 121 side, and the body 121 of the gear 12 is used to abut against one side of the paper 16 (as shown in FIG. direction movement.

Please refer to Fig. 1a and cooperate with Fig. 1b, wherein Fig. 1b is a schematic diagram of the back structure of the support shown in Fig. 1a, as shown in the figure, the support 11 mainly has a first surface 111, a second surface 112 (as shown in Fig. 1b ) and a plurality of accommodating grooves 115 formed by convex portions 113 and slot holes 114, wherein the space formed between two adjacent convex portions 113 in each accommodating groove 115 is used to accommodate the body 121 of the gear 12 , and the shaft 122 of the gear 12 is accommodated in the protrusion 113 and the slot 114 respectively.

As for the clamping plate 13, it has at least one elongated opening 131 corresponding to the body 121 of the gear 12. When the gear 12 is placed into the corresponding accommodation from the direction of the second surface 112 of the support After the groove 115, the body 121 of the gear 12 is accommodated in the space formed by two adjacent protrusions 113 and the shaft 122 of the gear 12 is respectively accommodated in the protrusion 113 and the slot hole 114. The clamping plate 13 It is fixed on the second surface 112 of the support member 11, so that the gear 12 is fixed in the accommodating groove 115 of the support member 11, and the body 12 of the gear 12 will pass through the opening 131 of the corresponding clamping plate 13 (such as 1c ), and exposed outside the clamping plate 13 , so that the body 121 of the gear 12 can abut against the paper 16 (as shown in FIG. 2b ).

Please refer to FIG. 1a and cooperate with FIG. 2a, wherein FIG. 2a is a schematic diagram of the assembled structure of FIG. and at least one holding member 142 arranged on both sides of the plate 141, the plate 141 is fixed on the first surface 111 of the supporting member 11, and the holding member 142 presses the accommodating groove arranged on the supporting member 11 On the shaft 122 of the gear 12 inside 115, the main body 121 of the gear 12 is in contact with the corresponding rotating body 15, so as to be driven by the rotating body 15 arranged on the other side of the paper 16 according to the advancing direction of the paper 16. Movement, the paper feeding mechanism 1 of the present invention mainly uses the elastic force of the elastic pressing element 14 to enable the gear 12 to move up and down in response to the thickness difference of the paper, which can reduce the pressure on the paper, and then make the paper that has been printed or scanned Delivered to the stack bin at the output of the MFP.

Please refer to Fig. 1 (a), the assembling procedure of the paper feeding mechanism 1 disclosed by the present invention is, at first, put the gear 12 into the accommodating groove 115 inside by the second surface 112 of the supporting member 11, so that the gear 12 The main body 121 is accommodated in the space formed by two adjacent protrusions 113 and the shaft 122 of the gear 12 is respectively accommodated in the protrusion 113 and the slot 114 (as shown in FIG. 1b ). Then, the clamping plate 13 It is fixed on the second surface 112 of the support member 11, so that the gear 12 is fixed in the accommodating groove 115 of the support member 11, and the body 12 of the gear 12 will pass through the opening 131 of the corresponding clamping plate 13 (such as Shown in Fig. 1c), finally the plate 141 of the elastic pressing element 14 is fixed on the first surface 111 of the supporting member 11, and the holding member 142 presses the gear 12 arranged inside the accommodating groove 115 of the supporting member 11 Make the main body 121 of the gear 12 contact with the corresponding rotating body 15 on the shaft 122, and then the paper feeding mechanism 1 of the present invention can be assembled (as shown in FIG. 2 a ).

Please refer to Fig. 3, which is a structural schematic diagram of assembling the paper feeding mechanism of the present invention inside the printer. One end is connected with a gear set 17 to drive the rotating body 15 to rotate, and the paper 16 that has been printed or scanned will be guided between the body 121 of the gear 12 and the rotating body 15, and the gear 12 will Driven by the rotating body 15 arranged on the other side of the paper 16, it is stable according to the forward direction of the paper 16 and rotates relative to the moving rotating body 15, so that the paper 16 is sent to the paper outlet of the printer 2. The paper mechanism 1 mainly uses the elastic force of the elastic pressing element 14 to enable the gear 12 to move up and down in response to the thickness difference of the paper 16, so when the thickness of the paper 16 to be conveyed is thick, the gear 12 will move up so that the gear 12 and the rotating body 15 The space between increases can reduce the pressure on the paper 16. On the contrary, when the thickness of the conveyed paper 16 is relatively thin, the pressing part 142 of the elastic pressing element 14 will press the gear 12 and move down so that the gear 12 and the rotating body 15 The space between them is reduced, so that the paper 16 can be conveyed smoothly, and a stable pressure can be provided to each paper, the ink will not adhere to the gear, and the ink attached to the surface of the gear will be transferred to the subsequent transmission. Problems on the paper, so that the printed or scanned paper is stably transported to the stacking bin at the paper output of the business machine.

To sum up, the paper feeding mechanism of the present invention uses elastic pressing elements to compress the gears fixed between the supporting member and the clamping plate, mainly using the elastic force of the elastic pressing elements to enable the gears to respond to the thickness difference of the paper Moving up and down can reduce the pressure on the paper, increase the printing quality and improve the stability of the conveying paper. Therefore, the paper feeding mechanism of the present invention has great industrial value, and an application is filed according to law.

The present invention can be modified in various ways by those who are familiar with this technology. However, all of them are not deviating from the intended protection of the appended patent scope.

Claims (8)

1. A paper feeding mechanism for conveying a processed paper, comprising: A supporting member having a first surface, a second surface and at least one receiving groove; At least one gear is inserted into the at least one receiving groove from the second surface of the support member; A clamping plate, which has at least one opening corresponding to the at least one gear, and is fixed on the second surface of the support, so that the at least one gear is fixed to the at least one of the support in the receiving groove, and the at least one gear part structure passes through the at least one opening; An elastic pressing element, which is arranged on the first surface of the supporting member, is used to elastically press the at least one gear, so that the at least one gear part structure can pass through the at least one opening and move in response to the difference in paper thickness , and convey the paper with a rotating body. 2. The paper feeding mechanism as claimed in claim 1, wherein the at least one gear has a body and a protruding shaft respectively. 3. The paper feeding mechanism as claimed in claim 2, wherein the at least one accommodating groove of the supporting member respectively includes a plurality of protrusions and a slot hole, and the gap between two adjacent protrusions is used for accommodating the gear The body, the shaft of the gear is partially accommodated in the plurality of protrusions. 4. The paper feeding mechanism as claimed in claim 2, wherein the elastic holding element comprises a plate and at least one holding piece, the plate is arranged on the first surface of the support, and the holding piece is used to compress the shaft of the gear. 5. A paper feeding mechanism for conveying a processed paper, comprising: a rotating body; A supporting member having a first surface, a second surface and at least one receiving groove; At least one gear has a body and at least one shaft respectively, and is arranged corresponding to the rotating body, which is inserted into the at least one accommodating groove from the second surface of the supporting member; A clamping plate, which has at least one opening corresponding to the body of the at least one gear, and is fixed on the second surface of the support, so that the at least one gear is fixed to the support the at least one accommodating groove, and the body of the at least one gear passes through the at least one opening; An elastic pressing element, which enables the at least one gear to move in response to the difference in paper thickness, is arranged on the first surface of the supporting member and has at least one holding member, which is pressed against the at least one gear On the protruding shaft, the body of the at least one gear is in contact with the corresponding rotating body for conveying the paper. 6. The paper feeding mechanism as claimed in claim 5, wherein the rotating body is a roller, which presses against one side of the paper relative to the gear to drive the paper to move. 7. The paper feeding mechanism as claimed in claim 5, wherein the at least one accommodating groove of the supporting member respectively includes a plurality of protrusions and a slot hole, and the gap between two adjacent protrusions is used for accommodating the gear The body, the shaft of the gear is partially accommodated in the plurality of protrusions. 8. The paper feeding mechanism as claimed in claim 5, wherein the elastic holding element further comprises a plate connected to the at least one holding element and disposed on the first surface of the supporting element.

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