Paper feeding device of paper feeder

Abstract

The present invention discloses a paper feeding device for a paper feeder, comprising a frame, a paper feeding space, a lifting platform, a lifting mechanism, a transmission track and a transport trolley. A positioning block and a blocking block are provided on the upper surface of the lifting platform. The transport trolley has a transport state and a lifting and positioning state. When the transport trolley is in the lifting and positioning state, it is supported on the positioning block and allows the transport trolley to move in the horizontal direction. The transmission track has a transport state and a separation state. When the transport trolley is in the switching process, the transmission track is switched through a linkage mechanism. The lifting mechanism has a working state and a non-working state. When the lifting mechanism is in the working state, a locking mechanism limits the horizontal movement of the transport trolley in the lifting and positioning state. When the lifting mechanism is in the non-working state, the locking mechanism is in an unlocked state. The present invention has the following advantages and effects: the present invention has low production cost, low failure rate and can reduce the overload loss of the lifting mechanism, thereby extending the service life of the lifting mechanism.

Description

Technical Field

[0001] The invention relates to a paper feeder, in particular to a paper feeding device of the paper feeder. Background Art

[0002] Sheet feeders are widely used in sheet-fed printing machinery and equipment such as screen printing machines, gravure printing machines, fully automatic die-cutting machines, and paper laminating machines. A paper stacking table for placing paper piles is set at the entrance section, and the paper is separated and fed into the paper feeder table in sequence through the feeder head. As the paper is continuously output, the paper pile monitoring system of the paper feeder increases the height of the paper pile at any time to ensure uninterrupted paper feeding.

[0003] The paper loading device of the existing paper feeder includes a frame, a paper loading space formed on the frame, a lifting platform located in the paper loading space, a lifting mechanism driving the lifting platform to lift and lower, a transmission track installed on the lifting platform and for the transport trolley to transmit, a lifting mechanism arranged on the lifting platform for lifting the transport trolley, and a positioning mechanism arranged on the lifting platform for aligning the transport trolley. The paper stack is placed on the transport trolley, and the paper stack and the transport trolley are pushed to the top of the lifting platform by the transmission track in conjunction with the transportation tool, and then the lifting mechanism is used to lift the height of the transport trolley to achieve its positioning in the vertical direction, and then the positioning mechanism is used to adjust the horizontal position of the paper stack in conjunction with the setting, so as to ensure the accurate output of subsequent paper. The use of the above-mentioned lifting mechanism and positioning mechanism both require a driving source, and the use of the driving source will greatly increase the production cost and failure rate of the equipment. In addition, the heavy driving source will also increase the load-bearing load of the lifting mechanism to a certain extent, resulting in the lifting mechanism being prone to excessive wear and tear during use, thereby greatly reducing the service life of the lifting mechanism. Based on the above problems, the present invention was conceived. Summary of the invention

[0004] The object of the present invention is to provide a paper feeding device for a paper feeder, which has low production cost, low failure rate and can reduce overload loss of a lifting mechanism, thereby extending the service life of the lifting mechanism.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: a paper feeding device for a paper feeder, comprising a frame, a paper feeding space formed on the frame, a lifting platform located in the paper feeding space, a lifting mechanism for driving the lifting platform to move, a transmission track installed on the lifting platform, and a transport trolley located above the transmission track, wherein a positioning block is provided on the upper surface of the lifting platform and a blocking block is provided near the end of the transmission track, the transport trolley has a transport state and a lifting and positioning state switched in cooperation with the blocking block, and when the transport trolley is in the lifting and positioning state, it is supported above the positioning block and is moved by the positioning block. The sliding structure allows the transport trolley to move in a horizontal direction. The transmission track is movably arranged on the lifting platform and has a transport state for contact with the transport trolley and a separation state separated from the transport trolley. When the transport trolley switches from the transport state to the lifting and positioning state, the transmission track is switched from the transport state to the separation state through a linkage mechanism. The lifting mechanism has a working state and a non-working state. When the lifting mechanism is in the working state, the transport trolley in the lifting and positioning state is limited to horizontal movement by a locking mechanism. When the lifting mechanism is in the non-working state, the locking mechanism is in an unlocked state.

[0006] By adopting the above technical solution, a paper stack is placed above a transport trolley, and the transport tool is used to push the paper stack and the transport trolley into the paper loading space and against the blocking block in cooperation with the transmission track, and the transport trolley is switched from the transport state to the lifting and positioning state by the transport tool. During the switching process, the transmission track is switched from the transport state to the separation state by the linkage mechanism, and then the transport trolley is supported above the positioning block. By switching the transmission track to the separation state first, the existing transmission track will not interfere with the subsequent horizontal movement of the transport trolley. The sliding structure provided can be used to manually push the transport trolley to move horizontally on the positioning block to adjust the horizontal position of the paper stack. When the paper stack is adjusted to the desired position, the lifting mechanism is switched from the non-working state to the working state, and the locking mechanism provided is used to lock the transport trolley in the horizontal direction to prevent the transport trolley from being displaced during the subsequent rising process, and then the paper stack is lifted by the lifting mechanism to realize the paper loading and output of the paper stack. The lifting mechanism in the non-working state will not cause the locking mechanism to be locked, thereby avoiding structural interference. This arrangement structure makes it possible to adjust the paper stack without separately setting up a driving source required for fixed adjustment operation, thereby reducing the production cost and failure rate of the paper loading device, and also reducing the overload loss of the lifting mechanism, thereby extending the service life of the lifting mechanism.

[0007] It is further configured as follows: the transport trolley includes a supporting plate, multiple sets of moving wheel groups arranged under the supporting plate, and a switching arm connecting each set of moving wheel groups and the supporting plate, the switching arm enables the supporting plate to swing and switch between a transport state and a lifting and positioning state in a vertical direction, and when the transport trolley switches from the transport state to the lifting and positioning state, it has an ascending stroke and a falling stroke. In the falling stroke, the transport trolley first forms a linkage with the linkage mechanism and then is supported above the positioning block.

[0008] By adopting the above technical solution, the support plate is pushed to make the transport trolley in the transport state move toward the blocking block through the transmission track. When the moving wheel group is against the blocking block, the support plate swings around the switching link under the action of the driving force, so that the support plate is deflected upward from the transport state to the lifting and positioning state, and in the process of the deflection and falling of the support plate, it first forms a linkage with the linkage mechanism and then is supported on the top of the positioning block, thereby realizing the linkage with the linkage mechanism while realizing the switching of the transport trolley between the transport state and the lifting and positioning state.

[0009] It is further configured as follows: the transmission track is lifted and slidably arranged on the lifting platform, and the linkage mechanism includes a linkage trigger plate which is slidably arranged on the lifting platform and reciprocates along the movement direction of the transport trolley, a linkage rod connected to the linkage trigger plate and extending to the bottom of the transmission track, a reset spring connected to the linkage trigger plate, and multiple groups of linkage components arranged between the linkage rod and the transmission track.

[0010] By adopting the above technical solution, the linkage trigger plate is used to form a linkage with the transmission track through the linkage rod, the linkage assembly and the reset spring to control the transmission track to achieve lifting. In addition, this setting structure also changes the direction of force, so that the linkage mechanism can control the transmission track to achieve lifting linkage while ensuring the stable transmission of the transmission track to the transport trolley, thereby ensuring the reliability and feasibility of the mechanism.

[0011] It is further configured as follows: the linkage assembly includes a linkage protrusion that moves with the linkage rod and is located directly below the transmission track and protrudes toward the transmission track, and a transition block that connects the linkage rod and the linkage protrusion toward one end of the length direction of the transmission track, and the transition block is connected to the linkage rod and the linkage protrusion in an arc-shaped transition.

[0012] By adopting the above technical solution, the height of the transmission track is changed by abutting the transmission track against different positions on the linkage protrusion and the linkage rod, and the smooth transition and switching of the transmission track between the linkage protrusion and the linkage rod is ensured by setting a transition block, so as to achieve the linkage purpose.

[0013] It is further configured as follows: the sliding structure is a plurality of supporting rollers rotatably arranged on the top of the positioning block, the plurality of supporting rollers are horizontally arranged along a length direction perpendicular to the transmission track and the axes of the supporting rollers are parallel to the length direction of the transmission track.

[0014] By adopting the above technical solution, the setting of the supporting roller realizes the rolling cooperation between the transport trolley and the positioning block, so as to reduce the friction resistance and make it easier for the transport trolley to move horizontally. In addition, the setting structure of the supporting roller can also play a certain guiding role in the moving direction, so as to better realize the horizontal linear movement of the transport trolley.

[0015] It is further configured as follows: the lifting mechanism includes a connecting piece connected to the lifting platform, the lifting mechanism switches between a working state and a non-working state to give the connecting piece a first position and a second position, the locking mechanism includes a locking block arranged on the supporting plate and a locking assembly formed between the locking block and the connecting piece, and when the connecting piece is in the first position or the second position, the locking assembly and the locking block form a lock.

[0016] By adopting the above technical solution, the lifting mechanism switches between the working state and the non-working state to give the connecting member a first position and a second position, thereby realizing the switching of the locking component between the locked state and the non-locked state.

[0017] It is further configured as follows: the locking assembly includes a plurality of locking teeth distributed on the side of the locking block facing the connecting piece and a plurality of locking holes distributed on the side of the connecting piece facing the locking teeth, and the locking teeth and locking holes are arranged and distributed along a direction parallel to the horizontal movement direction of the transport trolley.

[0018] By adopting the above technical solution, the locking tooth is inserted into the locking hole to limit the horizontal movement of the transport trolley, so as to achieve the locking purpose; when the locking tooth is separated from the locking hole, the lock on the transport trolley is released to allow the transport trolley to achieve horizontal movement.

[0019] It is further configured as follows: the lifting mechanism includes a plurality of lifting sprockets rotatably arranged on the frame, a plurality of lifting chains bypassing the lifting sprockets and connected to the lifting platform, and a driving member driving the lifting sprockets to rotate, wherein two of the lifting chains pass through the lifting platform and are connected to both ends of the connecting member.

[0020] By adopting the above technical solution, the lifting chain passes through the lifting platform and is connected to both ends of the connecting member to give the connecting member a hanging relaxed state and a lifting tight state, thereby allowing the locking component to switch between the two states.

[0021] In summary, the present invention has the following beneficial effects: the present invention has low production cost, low failure rate and can reduce overload loss of the lifting mechanism, thereby extending the service life of the lifting mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of an embodiment;

[0023] Figure 2 It is a partial structural schematic diagram of an embodiment;

[0024] Figure 3 It is a partial exploded view of an embodiment;

[0025] Figure 4 is another partial structural schematic diagram of the embodiment;

[0026] Figure 5 is a cross-sectional view of an embodiment;

[0027] Figure 6 for Figure 5 Enlarged view of part A in the middle;

[0028] Figure 7 It is a cross-sectional view of another state of the embodiment.

[0029] In the figure: 1. frame; 2. paper loading space; 3. lifting platform; 4. lifting mechanism; 41. connecting part; 42. lifting sprocket; 43. lifting chain; 44. driving part; 5. transmission track; 6. transport trolley; 61. supporting plate; 62. moving wheel set; 63. switching arm; 7. positioning block; 8. blocking block; 9. linkage mechanism; 91. linkage trigger plate; 92. linkage rod; 93. reset spring; 94. linkage protrusion; 95. transition block; 10. locking mechanism; 101. locking block; 102. locking tooth; 103. locking hole; 11. supporting roller. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0031] refer to Figures 1 to 7A paper feeding device for a paper feeder includes a frame 1, a paper feeding space 2 formed on the frame 1, a lifting platform 3 located in the paper feeding space 2, a lifting mechanism 4 driving the lifting platform 3 to move, a transmission track 5 installed on the lifting platform 3, and a transport trolley 6 located above the transmission track 5. An extension track connected to the transmission track 5 is fixedly arranged on the ground outside the frame 1. A positioning block 7 is fixedly arranged on the upper surface of the lifting platform 3, and a blocking block 8 is fixedly arranged near the end of the transmission track 5. The transport trolley 6 has a transport state and a lifting and positioning state switched with the blocking block 8; when the transport trolley 6 is in the lifting and positioning state, it is supported on the positioning block 7 and is moved in the horizontal direction by the sliding structure on the positioning block 7. The transmission track 5 is movably arranged on the lifting platform 3 and has a transport state for the transport trolley 6 to contact and a separation state separated from the transport trolley 6; when the transport trolley 6 switches from the transport state to the lifting and positioning state, the linkage mechanism 9 switches the transport track 5 from the transport state to the separation state. The lifting mechanism 4 has a working state and a non-working state; when the lifting mechanism 4 is in the working state, the locking mechanism 10 limits the horizontal movement of the transport trolley 6 in the lifting and positioning state; when the lifting mechanism 4 is in the non-working state, the locking mechanism 10 is in the unlocked state.

[0032] The transport trolley 6 includes a support plate 61, a plurality of moving wheel groups 62 arranged below the support plate 61, and a switching arm 63 connecting each moving wheel group 62 and the support plate 61. The moving wheel group 62 includes a rotating shaft and two rotating wheels rotatably connected to the rotating shaft; one end of the switching arm 63 is hinged to the support plate 61, and the other end is hinged to the rotating shaft. The switching arm 63 enables the support plate 61 to swing and switch between the transport state and the lifting and positioning state in the vertical direction; when the transport trolley 6 switches from the transport state to the lifting and positioning state, it has an ascending stroke and a descending stroke. In the descending stroke, the support plate 61 of the transport trolley 6 first forms a linkage with the linkage mechanism 9 and then is supported on the positioning block 7.

[0033] The transmission track 5 is slidably arranged on the lifting platform 3, and the linkage mechanism 9 includes a linkage trigger plate 91 which is slidably arranged on the lifting platform 3 and reciprocates along the moving direction of the transport trolley 6, a linkage rod 92 which is integrally connected to the linkage trigger plate 91 and extends to the bottom of the transmission track 5, a reset spring 93 which is connected to the linkage trigger plate 91, and a plurality of linkage components arranged between the linkage rod 92 and the transmission track 5. One end of the reset spring 93 is fixedly connected to the linkage trigger plate 91, and the other end is fixedly connected to the lifting platform 3. The linkage component includes a linkage protrusion 94 which is integrally arranged on the linkage rod 92 and is located directly below the transmission track 5 and protrudes toward the transmission track 5, and a transition block 95 which integrally connects the linkage rod 92 and the linkage protrusion 94 toward one end of the length direction of the transmission track 5, and the transition block 95 is connected to the linkage rod 92 and the linkage protrusion 94 in an arc transition. When the transmission track 5 is in a separated state, the transmission track 5 does not protrude from the upper surface of the lifting platform 3.

[0034] The sliding structure is a plurality of supporting rollers 11 rotatably arranged on the top of the positioning block 7 . The plurality of supporting rollers 11 are horizontally arranged along a length direction perpendicular to the transmission track 5 , and the axes of the supporting rollers 11 are parallel to the length direction of the transmission track 5 .

[0035] The lifting mechanism 4 includes a connecting member 41 connected to the lifting platform 3. The lifting mechanism 4 switches between the working state and the non-working state to give the connecting member 41 a first position and a second position. The locking mechanism 10 includes a locking block 101 fixedly arranged on the supporting plate 61 and a locking assembly formed between the locking block 101 and the connecting member 41. When the connecting member 41 is in the first position or the second position, the locking assembly and the locking block 101 are locked. The locking assembly includes a plurality of locking teeth 102 fixedly arranged on the side of the locking block 101 facing the connecting member 41 and a plurality of locking holes 103 distributed on the side of the connecting member 41 facing the locking teeth 102. The locking teeth 102 and the locking holes 103 are arranged and distributed along the horizontal movement direction parallel to the transport trolley 6. The locking teeth 102 are located above the locking holes 103 and the locking teeth 102 are arranged downward. The connecting member 41 is a chain (the chain is only partially shown in the attached figure), and the locking holes 103 are chain holes on the chain.

[0036] The lifting mechanism 4 includes a plurality of lifting sprockets 42 rotatably arranged on the frame 1, a plurality of lifting chains 43 passing through the lifting sprockets 42 and connected to the lifting platform 3, and a driving member 44 driving the lifting sprockets 42 to rotate. Two of the lifting chains 43 pass through the lifting platform 3 and are integrally connected to the two ends of the connecting member 41. The driving member 44 is a motor fixedly arranged on the frame 1 and the output shaft is fixedly connected to the lifting sprocket 42. When the lifting mechanism 4 is working, the connecting member 41 and the lifting chain 43 are in a tight lifting state, so that the lifting platform 3 is in a horizontal state and the locking tooth 102 is inserted into the locking hole 103, which can also limit the movement of the transport trolley 6 along the length direction of the transmission track 5; when the lifting mechanism 4 is not working, the connecting member 41 and the lifting chain 43 are in a relaxed drooping state, so that the locking tooth 102 is separated from the locking hole 103 and the lifting platform 3 is placed on the ground.

[0037] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A paper feeding device for a paper feeder, comprising a frame (1), a paper feeding space (2) formed on the frame (1), a lifting platform (3) located in the paper feeding space (2), a lifting mechanism (4) for driving the lifting platform (3) to move, a transmission track (5) installed on the lifting platform (3), and a transport trolley (6) located above the transmission track (5), characterized in that: A positioning block (7) is provided on the upper surface of the lifting platform (3) and a blocking block (8) is provided near the end of the transmission track (5). The transport trolley (6) has a transport state and a lifting and positioning state that is switched in cooperation with the blocking block (8). When the transport trolley (6) is in the lifting and positioning state, the transport trolley (6) is supported on the top of the positioning block (7) and is moved in the horizontal direction by the sliding structure on the positioning block (7). The transmission track (5) is movably arranged on the lifting platform (3). The transport track (5) has a transport state in contact with the transport trolley (6) and a separation state separated from the transport trolley (6). When the transport trolley (6) switches from the transport state to the lifting and positioning state, the linkage mechanism is used to move the transport trolley (6) in the lifting and positioning state. The lifting mechanism (9) switches the transport track (5) from a transport state to a separation state. The lifting mechanism (4) has a working state and a non-working state. When the lifting mechanism (4) is in the working state, the transport trolley (6) in the lifting and positioning state is limited to move horizontally by a locking mechanism (10). When the lifting mechanism (4) is in the non-working state, the locking mechanism (10) is in an unlocked state. The transport trolley (6) comprises a supporting plate (61), a plurality of moving wheel groups (62) arranged below the supporting plate (61), and a switching arm (63) connecting each moving wheel group (62) and the supporting plate (61). The switching arm (63) allows the supporting plate (61) to swing between the transport state and the lifting and positioning state in a vertical direction. The transport trolley (6) is automatically switched, and the process of switching from the transport state to the lifting and positioning state has an ascending stroke and a descending stroke. In the descending stroke, the transport trolley (6) first forms a linkage with the linkage mechanism (9) and then is supported on the positioning block (7). The transmission track (5) is lifted and slidably arranged on the lifting platform (3). The linkage mechanism (9) includes a linkage trigger plate (91) which is slidably arranged on the lifting platform (3) and reciprocates along the movement direction of the transport trolley (6), a linkage rod (92) connected to the linkage trigger plate (91) and extending to the bottom of the transmission track (5), a reset spring (93) connected to the linkage trigger plate (91), and a plurality of linkage components arranged between the linkage rod (92) and the transmission track (5). The lifting mechanism ( 4) comprises a connecting member (41) connected to the lifting platform (3); the lifting mechanism (4) switches between a working state and a non-working state so that the connecting member (41) has a first position and a second position; the locking mechanism (10) comprises a locking block (101) arranged on the supporting plate (61) and a locking assembly formed between the locking block (101) and the connecting member (41); when the connecting member (41) is in the first position or the second position, the locking assembly and the locking block (101) are locked; the locking assembly comprises a plurality of locking teeth (102) distributed on a side of the locking block (101) facing the connecting member (41) and a plurality of locking holes (103) distributed on a side of the connecting member (41) facing the locking teeth (102);The locking teeth (102) and the locking holes (103) are arranged and distributed in a direction parallel to the horizontal movement direction of the transport trolley (6).

2. The paper feeding device of the paper feeder according to claim 1, characterized in that: The linkage assembly comprises a linkage protrusion (94) which moves with the linkage rod (92) and is located directly below the transmission track (5) and protrudes toward the transmission track (5), and a transition block (95) which connects the linkage rod (92) and the linkage protrusion (94) toward one end of the length direction of the transmission track (5), and the transition block (95) is connected to the linkage rod (92) and the linkage protrusion (94) in an arc-shaped transition.

3. The paper feeding device of the paper feeder according to claim 1, characterized in that: The sliding structure comprises a plurality of supporting rollers (11) rotatably arranged on the top of the positioning block (7); the plurality of supporting rollers (11) are horizontally arranged along a length direction perpendicular to the transmission track (5), and the axes of the supporting rollers (11) are parallel to the length direction of the transmission track (5).

4. The paper feeding device of the paper feeder according to claim 1, characterized in that: The lifting mechanism (4) comprises a plurality of lifting sprockets (42) rotatably arranged on the frame (1), a plurality of lifting chains (43) passing around the lifting sprockets (42) and connected to the lifting platform (3), and a driving member (44) driving the lifting sprockets (42) to rotate, wherein two of the lifting chains (43) pass through the lifting platform (3) and are connected to two ends of the connecting member (41).

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