Document binding punching auxiliary pressing device

Abstract

The utility model provides an auxiliary pressing device for document binding and punching. The auxiliary pressing device for document binding and punching comprises a placing table, a pressing plate, a sliding frame, a supporting plate, a limiting plate and a pressing mechanism. When the auxiliary pressing device for document binding and punching is used, sorted documents can be placed on the supporting plate and limited through the baffle and the two positioning plates. Therefore, after the documents are arranged and positioned, the sliding frame is pushed to move in the direction close to the pressing plate, so that the edges of the documents enter the position below the pressing plate, the pressing plate is pressed by the pressing mechanism to move downwards and press the documents, the side edges of the documents are fixed, and then drilling operation is conducted. In the using process, documents are arranged, placed on the supporting plate and pushed to the position below the pressing plate through the supporting plate, the phenomenon that the documents are dislocated and loosened due to the fact that the documents are manually pushed to the position below the pressing plate can be avoided, operation is convenient, and the stability of the documents in the punching and fixing process is effectively guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of document binding equipment, and particularly relates to a document binding and punching auxiliary pressing device. BACKGROUND

[0002] After printing, the printed multiple paper sheets need to be bound into a book. During the binding, the multiple paper sheets are usually neatly stacked together, and then punched on one side of the paper sheets. In order to ensure the stability of the position of the paper sheets during the punching process, a pressing device is usually used to press the side of the stacked paper sheets before punching. The pressing device is usually fixed in the form of a pressing plate. During operation, the operator needs to manually place the stacked paper sheets under the pressing plate. The stacked paper sheets are prone to relative displacement when being stored under the pressing plate, and it is inconvenient for the operator to find and adjust due to the obstruction of the pressing plate. Ultimately, the phenomenon of unevenness is prone to occur during the binding of the document, which affects the binding quality. SUMMARY

[0003] The utility model embodiment provides a kind of document binding and punching auxiliary pressing device, to solve the problem that the paper sheet of the document binding and punching of prior art is prone to displacement and inconvenient to adjust during pressing process.

[0004] To achieve the above object, the utility model adopts the technical scheme of providing a kind of document binding and punching auxiliary pressing device, comprising:

[0005] A placing table;

[0006] A pressing plate is installed on the top of the placing table and is slidably arranged on the placing table in the vertical direction;

[0007] A sliding frame is slidably arranged on the placing table, the sliding direction of the sliding frame is defined as the first direction, the length direction of the pressing plate is the second direction, and the first direction and the second direction are arranged perpendicular to each other;

[0008] A supporting plate is installed on the sliding frame, and the side of the supporting plate away from the pressing plate is upwardly bent to be provided with a baffle, and positioning plates are installed on both sides of the supporting plate in the second direction;

[0009] A limiting plate is installed on the top surface of the placing table and is arranged in parallel with the baffle at intervals, for limiting the position of the document when the document is moved to the lower side of the pressing plate;

[0010] A pressing mechanism is installed on the placing table and is used for pressing the pressing plate downward.

[0011] In a possible implementation, two guide columns are fixedly installed on the placing table, two ends of the pressing plate are slidingly arranged on the two guide columns respectively, and an elastic member is sleeved outside the guide columns and used to push the pressing plate to move upward.

[0012] In a possible implementation, the positioning plate is installed on the sliding frame, and the position of the positioning plate on the sliding frame has a degree of freedom adjusted along a second direction.

[0013] In a possible implementation, a sliding piece is fixedly installed on the positioning plate and slidingly arranged on the sliding frame, a clamping plate is hingedly arranged on the sliding piece and used to clamp the sliding frame, and a torsion member is further arranged between the sliding piece and the clamping plate and used to push the clamping plate to clamp the sliding frame.

[0014] In a possible implementation, a through slot for installing the sliding piece is arranged on the sliding frame, a limiting part and the clamping plate are arranged on two opposite sides of the sliding piece respectively, and the limiting part is used to prevent the sliding piece from sliding out of the through slot.

[0015] In a possible implementation, guide rails are protrudingly arranged on two sides of the placing table along a second direction, sliding parts are arranged on two ends of the sliding frame and slidingly arranged on the guide rails, and sliding grooves for accommodating the guide rails are arranged on the sliding parts.

[0016] In a possible implementation, a fixing plate for pressing a document on the supporting plate is further installed on the sliding frame, the fixing plate is located on a side of the sliding frame close to the baffle, and a pushing assembly for pushing the fixing plate to move downward is further arranged on the sliding frame.

[0017] In a possible implementation, the pushing assembly comprises:

[0018] Two vertical rods are fixedly installed on the sliding frame, and two ends of the fixing plate are slidingly arranged on the vertical rods;

[0019] A pushing member is threadedly connected with the vertical rod and can abut against a top of the fixing plate.

[0020] In a possible implementation, the pressing mechanism comprises:

[0021] A base is fixedly installed on the placing table;

[0022] A guide rod is hingedly arranged on the base at a bottom end;

[0023] A swing rod is hingedly arranged on the base at a bottom end, and a top rod for abutting against the pressing plate is installed on the swing rod;

[0024] A driving rod is arranged at the top end of the guide rod, and one end of the driving rod is arranged at the top end of the swing rod.

[0025] Compared with the prior art, the scheme shown in the embodiment of the application has the placing table, the pressing plate is installed on the top of the placing table, and the pressing plate and the top surface of the placing table form a placing gap for placing the document. The sliding frame is also arranged on the placing table in a sliding manner, the supporting plate is fixedly installed on the sliding frame, and the supporting plate is arranged on the top surface of the placing table in a sliding manner. When the sliding frame moves towards the pressing plate, the supporting plate can be synchronously driven to move. The positioning plates are installed on both sides of the supporting plate in the second direction, and the side of the supporting plate away from the pressing plate is provided with the baffle arranged in an upwardly bent manner. The two positioning plates and the baffle form a U-shaped groove for placing the document. In use, the document arranged in an orderly manner can be placed on the supporting plate and positioned by the baffle and the two positioning plates. Therefore, the document can be arranged in an orderly manner and positioned first, and then the document is moved towards the pressing plate by pushing the sliding frame, so that the edge of the document enters below the pressing plate. The pressing plate is pressed downward by the pressing mechanism and tightly presses on the document, so that the edge of the document is fixed, and then the drilling operation is performed. In the use process, the document arranged in an orderly manner is placed on the supporting plate and pushed to below the pressing plate by the supporting plate, so that the document is prevented from being manually pushed below the pressing plate and loosened, the operation is convenient, and the stability of the document in the punching and fixing process is effectively ensured. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 A structural schematic view of a document binding and punching auxiliary pressing device is provided for the embodiment of the utility model;

[0027] Figure 2 An installation structural schematic view of a positioning plate is provided for the embodiment of the utility model;

[0028] Figure 3 A structural schematic view of a pressing mechanism is provided for the embodiment of the utility model.

[0029] BRIEF DESCRIPTION OF DRAWINGS

[0030] 1, placing table; 11, guide rail; 2, pressing plate; 21, guide column; 22, elastic piece; 3, sliding frame; 31, sliding part; 4, supporting plate; 41, baffle; 5, positioning plate; 51, sliding sheet; 511, limiting part; 52, clamping plate; 53, twisting piece; 6, limiting plate; 7, pressing mechanism; 71, base; 72, guide rod; 73, swing rod; 74, driving rod; 75, top rod; 8, fixed plate; 81, vertical rod; 82, pushing piece. DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical schemes and beneficial effects to be solved by the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and not to limit the utility model.

[0032] Please refer to Figures 1 to 3 , now the document binding and punching auxiliary pressing device provided by the utility model will be described. The document binding and punching auxiliary pressing device comprises a placing table 1, a pressing plate 2, a sliding frame 3, a supporting plate 4, a limiting plate 6 and a pressing mechanism 7. The pressing plate 2 is installed on the top of the placing table 1 and is slidably arranged on the placing table 1 in the vertical direction; the sliding frame 3 is slidably arranged on the placing table 1, the sliding direction of the sliding frame 3 is defined as the first direction, the length direction of the pressing plate 2 is the second direction, and the first direction and the second direction are arranged perpendicularly to each other; the supporting plate 4 is installed on the sliding frame 3, and a baffle 41 is arranged on the side of the supporting plate 4 away from the pressing plate 2 and is bent upwards; the limiting plate 5 is also installed on the two sides of the supporting plate 4 in the second direction; the limiting plate 6 is installed on the top surface of the placing table 1 and is arranged in parallel with the baffle 41 at intervals, and is used for limiting the position of the document when the document is moved to the lower side of the pressing plate 2; and the pressing mechanism 7 is installed on the placing table 1 and is used for pressing the pressing plate 2 downwards.

[0033] The document binding and punching auxiliary pressing device provided by the embodiment comprises the placing table 1, the pressing plate 2 is installed on the top of the placing table 1, and the pressing plate 2 and the top surface of the placing table 1 form a placing gap for placing the document. The sliding frame 3 is also slidably arranged on the placing table 1, and the supporting plate 4 is fixedly installed on the sliding frame 3 and is slidably arranged on the top surface of the placing table 1. When the sliding frame 3 moves towards the pressing plate 2, the supporting plate 4 can be synchronously moved, the limiting plate 5 is installed on the two sides of the supporting plate 4 in the second direction, and the baffle 41 is arranged on the side of the supporting plate 4 away from the pressing plate 2 and is bent upwards. The two limiting plates 5 and the baffle 41 form a U-shaped groove for placing the document. In use, the arranged document can be placed on the supporting plate 4 and is limited by the baffle 41 and the two limiting plates 5. Thus, the document can be arranged and positioned first, then the sliding frame 3 is pushed towards the pressing plate 2, so that the edge of the document enters the lower side of the pressing plate 2, the pressing plate 2 is pressed downwards by the pressing mechanism 7 and is pressed on the document, so that the edge of the document is fixed, and then the drilling operation is performed. In the use process, the document is placed on the supporting plate 4 after being arranged and is pushed to the lower side of the pressing plate 2 by the supporting plate 4, so that the phenomenon of misplacement and looseness of the document caused by manually pushing the document to the lower side of the pressing plate 2 can be avoided, the operation is convenient, and the stability of the document in the punching and fixing process is effectively ensured.

[0034] Specifically, in the embodiment, a guide hole for guiding a drilling bit is arranged on the pressing plate 2, a corresponding clearance hole is arranged on the placing table 1, and an elongated clearance hole for avoiding the drilling bit is arranged on the supporting plate 4. When the pressing plate 2 presses the document on the placing table 1, the drilling bit can be used to drill the document through the guide hole.

[0035] Preferably, in the embodiment, a base 71 for mounting on the placing table 1 is arranged on the bottom of the limiting plate 6, the base 71 is attached to the top surface of the placing table 1, and the base 71 is fixedly mounted on the placing table 1 by bolts. A clearance slot extending in the first direction is arranged on the base, and the bolts are arranged inside the clearance slot and are threadedly connected with the placing table 1, so that the position of the limiting plate 6 in the first direction on the placing table 1 can be adjusted.

[0036] In some embodiments, the above-mentioned pressing plate 2 can adopt the structure as shown in Figure 1 . Referring to Figure 1 , two guide columns 21 are fixedly mounted on the placing table 1, and the two ends of the pressing plate 2 are slidingly arranged on the two guide columns 21, respectively. An elastic member 22 for pushing the pressing plate 2 upward is sleeved on the outer side of the guide column 21. The two guide columns 21 are arranged on the placing table 1 in the second direction, and the two ends of the pressing plate 2 are slidingly arranged on the two guide columns 21, respectively. The elastic member 22 is a spring, and the two ends of the elastic member 22 abut against the pressing plate 2 on the placing table 1. The elastic member 22 is sleeved on the outer side of the guide column 21. When the pressing assembly releases the pressing plate 2, the pressing plate 2 can be lifted up by the elastic member 22, so that the document that has been drilled can be taken out more conveniently.

[0037] In some embodiments, the above-mentioned positioning plate 5 can adopt the structure as shown in Figure 1 , Figure 2 . Referring to Figure 1 , Figure 2 , the positioning plate 5 is mounted on the sliding frame 3, and the position of the positioning plate 5 on the sliding frame 3 has a degree of freedom in the second direction. In the second direction, the positioning plate 5 is mounted on both sides of the supporting plate 4, and the positioning plate 5 is arranged perpendicular to the top surface of the placing table 1. A guide plate is arranged on the outer side of the end of the positioning plate 5 close to the pressing plate 2. Thus, the document can be conveniently placed on the supporting plate 4 in the first direction and between the two positioning plates 5. Moreover, the positions of the two positioning plates 5 on the sliding frame 3 can be adjusted in the second direction, so that the positions of the two positioning plates 5 can be freely adjusted according to the size of the document, so as to be suitable for drilling different sizes of documents.

[0038] In some embodiments, the above-mentioned positioning plate 5 can adopt the structure as shown in Figure 2 . Referring to Figure 2The positioning plate 5 is fixedly installed with a sliding sheet 51 which is slidingly arranged on the sliding frame 3, the sliding sheet 51 is hingedly provided with a clamping plate 52 which is used for clamping to the sliding frame 3, and a torsion member 53 is further arranged between the sliding sheet 51 and the clamping plate 52 and is used for pushing the clamping plate 52 to clamp to the sliding frame 3. The positioning plate 5 is fixedly installed with the sliding sheet 51 which is arranged in parallel with the top surface of the placement table 1, and the clamping plate 52 is hingedly arranged at the end of the sliding sheet 51 which is away from the pressing plate 2, and the clamping plate 52 can be flipped to the top of the sliding frame 3 and abut against the top of the sliding frame 3. When the position of the positioning plate 5 needs to be adjusted, the clamping plate 52 can be made to be separated from the sliding frame 3 by rotating the clamping plate 52, so that the clamping plate 52 can slide on the sliding frame 3 in the second direction. When the position of the sliding frame 3 needs to be fixed, the clamping plate 52 is abutted to the sliding frame 3 under the driving of the torsion member 53 after the clamping plate 52 is loosened, and the sliding frame 3 is clamped between the sliding sheet 51 and the clamping plate 52, so as to realize the fixation of the position of the sliding sheet 51. The operation is simple and the position of the sliding sheet 51 can be conveniently adjusted.

[0039] Preferably, in the embodiment, the clamping plate 52 is provided with an elastic protrusion which is used for abutting to the sliding frame 3, and the elastic protrusion can increase the friction between the sliding frame 3 and the clamping plate 52 when abutting to the sliding frame 3, so as to ensure the stability of the position of the positioning plate 5.

[0040] Specifically, in the embodiment, the torsion member 53 is a torsion spring, and the two ends of the torsion spring are respectively abutted against the sliding sheet 51 and the clamping plate 52.

[0041] In some embodiments, the sliding frame 3 can adopt the structure as shown in Figure 2 . Referring to Figure 2 , the sliding frame 3 is provided with a through slot which is used for installing the sliding sheet 51, and the two opposite sides of the sliding sheet 51 are respectively provided with a limiting portion 511 and the clamping plate 52, and the limiting portion 511 is used for preventing the sliding sheet 51 from sliding out of the through slot. The sliding frame 3 comprises a guide rod which is arranged in the second direction, and the guide rod is slidingly arranged on the top surface of the placement table 1, and a through slot which is used for installing the sliding sheet 51 is arranged in the middle of the guide rod, the length direction of the through slot is arranged in the second direction, and the two sides of the through slot in the first direction are arranged through the guide rod. When the sliding sheet 51 is installed inside the through slot, the clamping plate 52 and the limiting plate 6 are respectively located on the two sides of the through slot in the first direction, so as to limit the sliding sheet 51 inside the through slot. The limiting portion 511 abuts against the side wall of the guide rod, so as to play a guiding and positioning role. When the position of the positioning plate 5 on the sliding frame 3 needs to be adjusted, the position of the positioning plate 5 can be adjusted by sliding the sliding sheet 51 in the second direction inside the through slot, and the structure is simple and the operation is convenient.

[0042] Preferably, in the embodiment, the number of the through slots is two, and the two through slots are respectively located on the two sides of the supporting plate 4, so as to effectively enhance the strength of the sliding frame 3.

[0043] Specifically, in the embodiment, one side edge of the clamping plate 52 extends outwardly and is provided with a pressing portion, and the hinge shaft of the clamping plate 52 on the sliding sheet 51 is located at the connection between the clamping plate 52 and the pressing portion. An operator can press the pressing portion to make the clamping plate 52 disengage from the sliding frame 3.

[0044] In some embodiments, the sliding frame 3 described above can adopt the structure as shown in Figure 1 . Referring to Figure 1 , the placement table 1 is provided with guide rails 11 protruding on both sides in the second direction, and the sliding frame 3 is provided with sliding portions 31 at both ends of the sliding frame 3, which are slidably arranged on the guide rails 11, and the sliding portions 31 are provided with sliding grooves for accommodating the guide rails 11. The placement table 1 is provided with square guide rails 11 protruding on both side edges in the second direction, and the sliding frame 3 includes guide rods slidably arranged on the top surface of the placement table 1, and the sliding portions 31 are bent downwardly at both ends of the guide rods. The sliding portions 31 are integrally bent, and the sliding grooves slidably arranged on the guide rails 11 are bent on the sliding portions 31. The sliding frame 3 is limited on the placement table 1 by the sliding portions 31 at both ends, so that the sliding frame 3 can stably slide on the placement table 1 in the first direction, and the sliding frame 3 can stably move towards the pressing plate 2 when the supporting plate 4 is pushed to the bottom of the pressing plate 2. Displacement of the paper in the document during pushing is avoided.

[0045] Specifically, in the embodiment, the end portions of the guide rails 11 are provided with limiting protrusions for preventing the sliding portions 31 from sliding out of the guide rails 11, and the thicknesses of the limiting protrusions gradually increase towards the pressing plate 2.

[0046] In some embodiments, the sliding frame 3 described above can adopt the structure as shown in Figure 1 , Figure 2 . Referring to Figure 1 , Figure 2 , the sliding frame 3 is further provided with a fixing plate 8 for pressing the document on the supporting plate 4, the fixing plate 8 is located on one side of the sliding frame 3 close to the baffle 41, and the sliding frame 3 is further provided with a pushing assembly for pushing the fixing plate 8 to move downwardly. The fixing plate 8 is detachably installed on the sliding frame 3, and when the fixing plate 8 is installed on the sliding frame 3, the fixing plate 8 is located directly above the supporting plate 4, and the fixing plate 8 is slidably arranged on the baffle 41. After the document is placed on the supporting plate 4 and is arranged and arranged in order by the baffle 41 and the positioning plate 5, the document can be pre-pressed on the supporting plate 4 by the fixing plate 8, and then the supporting plate 4 is pushed to move towards the pressing plate 2, so that the stability of the document in the conveying process can be further ensured.

[0047] In some embodiments, the pushing assembly described above can adopt the structure as shown in Figure 1 , Figure 2 . Referring to Figure 1 , Figure 2The pushing assembly comprises a vertical rod 81 and a pushing piece 82. The vertical rod 81 is in number of two, and the two vertical rods 81 are fixedly installed on the sliding frame 3, and the two ends of the fixed plate 8 are slidingly arranged on the vertical rods 81; the pushing piece 82 is threadedly connected with the vertical rod 81, and can abut against the top of the fixed plate 8. The two vertical rods 81 are installed on the sliding frame 3 along the second direction and are spaced apart, and the fixed plate 8 is provided with a guide hole slidingly matched with the two vertical rods 81. The vertical rod 81 is arranged along the vertical direction, so that the fixed plate 8 is slidingly arranged on the sliding frame 3 along the vertical direction, and one side edge of the fixed plate 8 is slidingly arranged on one side of the baffle 41. The stability of the up-down movement of the fixed plate 8 is ensured. The pushing piece 82 is further threadedly connected with the top end of the vertical rod 81, and the pushing piece 82 is a nut. By rotating the pushing piece 82, the fixed plate 8 can be pressed against the upper surface of the document, so that the document is pressed between the supporting plate 4 and the fixed plate 8. The stability of the document in the stacking and conveying process is further improved. After the punching is completed, the pushing piece 82 can be loosened, and the document can be taken out from between the fixed plate 8 and the supporting plate 4, so that the operation is convenient and the use is simple.

[0048] In some embodiments, the above-mentioned pressing mechanism 7 can adopt the structure as shown in Figure 1 、 Figure 3 . See also Figure 1 、 Figure 3The pressing mechanism 7 comprises a base 71, a guide rod 72, a swing rod 73 and a driving rod 74. The base 71 is fixedly installed on the placing table 1; the bottom end of the guide rod 72 is hingedly arranged on the base 71; the bottom end of the swing rod 73 is hingedly arranged on the base 71, and a top rod 75 for abutting against the pressing plate 2 is installed on the swing rod 73; the middle part of the driving rod 74 is hingedly arranged at the top end of the guide rod 72, and one end is hingedly arranged at the top end of the swing rod 73. The guide rod 72 and the swing rod 73 are arranged on the base 71 in a first direction, and the axis of the hinge shafts of the guide rod 72 and the swing rod 73 on the base 71 is arranged in a second direction. The driving rod 74 is further installed between the guide rod 72 and the swing rod 73, and the driving rod 74 comprises a pushing part and a pulling part, the pushing part and the pulling part are arranged at an included angle, the connection part of the pushing part and the pulling part is hingedly arranged on the guide rod 72, and the end of the pulling part away from the pushing part is hingedly arranged on the swing rod 73. The middle part of the swing rod 73 is fixedly connected with a mounting part for mounting the top rod 75, the mounting part is arranged perpendicular to the swing rod 73, and a mounting hole for mounting the top rod 75 is arranged at the end of the mounting part away from the swing rod 73, two nuts are threadedly connected on the top rod 75, and the two nuts abut against the two ends of the mounting hole respectively. Thus, the position of the top rod 75 on the swing rod 73 can be adjusted. In use, the operator can pull the driving rod 74, so as to drive the swing rod 73 to swing on the base 71, make the end of the driving rod 74 abut against the pressing plate 2, and push the pressing plate 2 to move downward. Thus, the operation of pressing the pressing plate 2 downward can be realized. Meanwhile, according to the thickness of the document, the position of the top rod 75 on the swing rod 73 can be freely adjusted, so as to ensure the stable extrusion effect. After the punching is completed, the swing rod 73 is pulled to move outward, so as to make the swing rod 73 turn upward, and the extrusion of the pressing plate 2 is released. The operation is simple and the use is convenient.

[0049] Preferably, in the embodiment, the pressing mechanism 7 is two groups, and the two groups of pressing mechanisms 7 are respectively located at the two ends of the pressing plate 2 and are located on the side away from the supporting plate 4. Enough space is ensured on the placing table 1 for storing the document.

[0050] The above merely describes the preferred embodiments of the utility model and is not used to limit the utility model, and any modification, equivalent replacement and improvement made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A document binding and punching assist compacting device, characterized by, The utility model provides a document pressing device, which comprises: a placing table (1); a pressing plate (2) mounted on the top of the placing table (1) and slidingly arranged on the placing table (1) in the vertical direction; a sliding frame (3) slidingly arranged on the placing table (1), wherein the sliding direction of the sliding frame (3) is defined as a first direction, and the length direction of the pressing plate (2) is defined as a second direction, and the first direction and the second direction are arranged perpendicularly to each other; a supporting plate (4) mounted on the sliding frame (3), wherein one side of the supporting plate (4) away from the pressing plate (2) is bent upwards and provided with a baffle (41), and positioning plates (5) are mounted on both sides of the supporting plate (4) in the second direction; a limiting plate (6) mounted on the top surface of the placing table (1) and arranged in parallel with the baffle (41) at intervals, for limiting the position of a document when the document moves below the pressing plate (2); a pressing mechanism (7) mounted on the placing table (1) and used for pressing the pressing plate (2) downwards.

2. The document binding and punching assist compression device of claim 1, wherein, Two guide columns (21) are fixedly mounted on the placing table (1), and both ends of the pressing plate (2) are slidingly arranged on the two guide columns (21), and the outer sides of the guide columns (21) are sleeved with elastic members (22) used for pushing the pressing plate (2) to move upwards.

3. The document binding and punching assist hold down device of claim 1 wherein, The positioning plates (5) are mounted on the sliding frame (3), and the positions of the positioning plates (5) on the sliding frame (3) have the freedom of adjustment in the second direction.

4. The document binding and punching assist compression device of claim 3, wherein, The positioning plates (5) are fixedly mounted with sliding pieces (51) slidingly arranged on the sliding frame (3), the sliding pieces (51) are hingedly provided with clamping plates (52) used for clamping the sliding frame (3), and torsion members (53) used for pushing the clamping plates (52) to clamp the sliding frame (3) are further arranged between the sliding pieces (51) and the clamping plates (52).

5. The document binding and hole punching assist compression device of claim 4, wherein, The sliding frame (3) is provided with a through slot used for mounting the sliding pieces (51), and both opposite sides of the sliding pieces (51) are provided with limiting portions (511) and the clamping plates (52), respectively, and the limiting portions (511) are used for preventing the sliding pieces (51) from sliding out of the through slot.

6. The document binding and hole punching assist hold down device of claim 1 wherein, Both sides of the placing table (1) in the second direction are protrusively provided with guide rails (11), both ends of the sliding frame (3) are bent and provided with sliding portions (31) slidingly arranged on the guide rails (11), and the sliding portions (31) are provided with sliding grooves used for accommodating the guide rails (11).

7. The document binding and hole punching assist hold down device of claim 1 wherein, The sliding frame (3) is further provided with a fixing plate (8) used for pressing a document against the supporting plate (4), the fixing plate (8) is located on one side of the sliding frame (3) close to the baffle (41), and the sliding frame (3) is further provided with a pushing assembly used for pushing the fixing plate (8) to move downwards.

8. The document binding and hole punching assist compression device of claim 7, wherein, The pushing assembly comprises: two vertical rods (81) fixedly mounted on the sliding frame (3), and both ends of the fixing plate (8) are slidingly arranged on the vertical rods (81); a pushing member (82) threadedly connected with the vertical rods (81) and capable of abutting against the top of the fixing plate (8).

9. The document binding and hole punching assist hold down device of claim 1 wherein, The pressing mechanism (7) comprises: a base (71) fixedly installed on the placing table (1); a guide rod (72) hingedly arranged at the bottom end of the base (71); a swing rod (73) hingedly arranged at the bottom end of the base (71), and a top rod (75) for abutting against the pressing plate (2) being installed on the swing rod (73); a driving rod (74) hingedly arranged at the top end of the guide rod (72) and at one end of the top end of the swing rod (73).

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