Chain type printing decorative paper conveying device

Abstract

The invention discloses a chain type printing decorative paper conveying device, and particularly relates to the technical field of printing decorative paper production, the chain type printing decorative paper conveying device comprises chain wheel rod pieces which are symmetrically arranged, and chain wheels of the two chain wheel rod pieces are sleeved with chains; the mounting cabins are arranged on the chain at equal intervals; tenon-in pieces are symmetrically arranged on the end surfaces of the supporting plate pieces; the tenon-in piece is inserted into the installation cabin and is in abutting connection with a base table which is arranged in the tenon-in piece and connected through a first blocking spring so that the supporting plate piece can move relative to the installation cabin. The printing decorative paper roll conveying device is simple in structure and convenient and fast to operate, and when the multiple supporting plate pieces are subjected to negative pressure of the printing decorative paper roll, the supporting plate pieces can be attached to the surface of the printing decorative paper roll, so that a concave discontinuous arc-shaped face is formed, the printing decorative paper roll is limited, and the printing decorative paper roll is prevented from rolling due to inertia brought by the conveying direction in the conveying process.

Description

Technical Field

[0001] The invention relates to the technical field of printed decorative paper production, and in particular to a chain-type printed decorative paper conveying device. Background Art

[0002] The finished product of printed decorative paper is in the form of rolls, which are then laminated through a laminating machine. Since the finished printed decorative paper rolls are relatively large in size and weight, they are generally transported using a chain conveyor belt and a forklift.

[0003] Referring to the publication (announcement) number: CN1861499B, a chain conveyor belt equipped with rollers is disclosed, which conveys articles in a straight direction by driving the chain conveyor belt in a straight moving section, and changes the conveying direction of the articles by the mutual friction between the reversing rollers rotatably installed in a diagonal direction on the chain conveyor belt and the articles in the reversing section of the conveyor belt. The chain conveyor belt equipped with reversing rollers based on the present invention includes: a chain conveyor belt, which, when driven by a driving unit, conveys the carried articles in a straight direction, and is composed of a plurality of chain plates connected in a foldable manner; a pair of brackets, which fix the lower side on the outer side surface of the chain plate in a form opposed in the front-to-back direction, and the upper fixed plate is formed with an inclined shape; a reversing roller, which is rotatably fixed on the bracket in a diagonal direction, and causes the articles conveyed along the roller conveyor belt and stopped by the brake roller rotatably arranged in front of the chain conveyor belt to be reversed by the friction rotation force.

[0004] In the existing invention including the above-mentioned patent, the chain conveyor belt surface is composed of multiple plate surfaces, so that when conveying the printed decorative paper roll, a baffle is inserted in the gap between two adjacent plate surfaces to limit the position, or a triangular wooden wedge is placed to limit the position, thereby preventing the printed decorative paper roll from rolling forward due to the inertia generated during the conveying process. Summary of the invention

[0005] The object of the present invention is to provide a chain-type printed decorative paper conveying device for solving the above-mentioned problems.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A chain-type printed decorative paper conveying device comprises symmetrically arranged sprocket rods, and chains are sleeved on the sprockets of two of the sprocket rods;

[0008] It also includes a plurality of mounting compartments equidistantly arranged on the chain and a support plate member with tenon members symmetrically arranged on the end surface;

[0009] The mortise and tenon member is inserted into the installation chamber and is connected to the base arranged therein and connected therein through a first spring so that the support plate member can move relative to the installation chamber.

[0010] Preferably, a guide slide is symmetrically slidably arranged in the installation cabin, a first connecting rod symmetrically rotatably connected to the guide slide is provided on the base, and an equidistant spring is fixedly connected between the two guide slides.

[0011] Preferably, the mortise has at least two inclined surfaces, and further comprises a V-shaped elastic connecting arm with one end fixed to the inner wall of the mortise and the other end connected to one end of the arc-shaped plate movably arranged in the notch of the inclined surface;

[0012] A second connecting rod is rotatably provided on the inner wall of the installation cabin, a third connecting rod is rotatably provided on the end of the second connecting rod, a fourth connecting rod is rotatably provided on the third connecting rod, the second end of which is located in a waist groove provided on the second connecting rod and slides in the waist groove, and a spherical portion is provided on the end of the third connecting rod;

[0013] The spherical part is slidably connected to the arc plate, so that the end of the arc plate extends out of a notch to be hung with an L-shaped hanging rod fixedly installed on the supporting plate.

[0014] Preferably, a fifth connecting rod is rotatably provided on the second connecting rod, the second end of which is rotatably connected to the sliding guide.

[0015] Preferably, a gear rod that moves along the waist groove direction is slidably provided on the second connecting rod, a fixed gear is fixedly installed on the inner wall of the installation cabin, a first circular gear that meshes with the fixed gear is rotatably provided on the second connecting rod, and the gear rod meshes with the first circular gear and the second circular gear fixedly installed on the fourth connecting rod.

[0016] Preferably, the L-shaped hanging rod is divided into a horizontal part and a vertical part according to the structure, and further comprises a push plate, one end of which is rotatably provided with a fifth connecting rod, a rectangular slide groove is provided on the push plate, a sixth connecting rod is slidably provided in the rectangular slide groove, the fifth connecting rod is rotatably provided on the horizontal part, and the sixth connecting rod is rotatably provided on the vertical part;

[0017] A second stop spring is arranged in the rectangular slide groove, and in a default state, the second stop spring causes one end of the sixth connecting rod located in the rectangular slide groove to be away from the fifth connecting rod, so that the angle between the push plate and the bottom of the installation cabin is 45°;

[0018] The arc-shaped plate extending out of the notch pushes the pushing plate to reduce the included angle.

[0019] Preferably, a triangular slot is provided on the outer side of the arc-shaped plate, and a hook rod is rotatably provided on the vertical portion, and the hook rod is divided into:

[0020] A contact foot portion that is in contact with the push plate;

[0021] The inner side surface is provided with a triangular clamping piece, and a lever portion which is clamped and matched with the triangular clamping groove.

[0022] Preferably, the mortise and tenon member has two negative pressure surfaces, and the negative pressure surfaces are pressed and fixed with negative pressure tongues symmetrically arranged in rotation in the installation cabin;

[0023] The inner walls of the installation cabin on opposite sides are slidably provided with vertically movable slide rails, and the slide rails are connected to compression springs provided on the installation cabin;

[0024] A guide rod is rotatably arranged on the slide rail member, a return groove is provided in the guide rod, and the return groove has two slots symmetrically arranged along the axis of the guide rod. The negative pressure tongue includes an extension portion, and a short shaft movable in the return groove is provided on the extension portion.

[0025] Preferably, the installation cabin is provided with an arc-shaped metal plate, a universal ball is movably provided on the arc-shaped metal plate, and a seventh connecting rod is rotatably provided on the universal ball and the slide rail member;

[0026] The arc-shaped metal plate is deformed by the negative pressure of the inclined tenon.

[0027] Preferably, the return groove is composed of a rectangular frame and a rectangular core plate arranged at the axis of the rectangular frame, and the distance between the rectangular frame and the rectangular core plate forms an annular groove;

[0028] The two slots are provided on the outer walls of the rectangular core plate at opposite sides and arranged in the center;

[0029] The inner wall of the rectangular frame is provided with a guide block, and the guide block cooperates with the clamping groove so that the short shaft is introduced into / exported from the clamping groove and returns to the annular groove.

[0030] In the above technical scheme, a chain-type printed decorative paper conveying device provided by the present invention has the following beneficial effects: in the design, the support plate is inserted into the installation cabin through the mortise and tenon parts thereon and abuts against the base. When multiple support plates are subjected to negative pressure from the printed decorative paper roll, they will fit the surface of the printed decorative paper roll, thereby forming a concave discontinuous arc surface, thereby forming a limit for the printed decorative paper roll, preventing it from rolling due to the inertia brought by the conveying direction during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0032] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0033] Figure 2 A schematic diagram of the assembly structure of a support plate and an installation cabin provided in an embodiment of the present invention;

[0034] Figure 3 A schematic diagram of the structure of a support plate member and a tenon member provided in an embodiment of the present invention;

[0035] Figure 4 A schematic cross-sectional structure diagram of a support plate and an installation cabin provided in an embodiment of the present invention;

[0036] Figure 5 The embodiment of the present invention provides Figure 4 The first local enlarged structural diagram;

[0037] Figure 6 The embodiment of the present invention provides Figure 4 A second partial enlarged structural schematic diagram;

[0038] Figure 7 The embodiment of the present invention provides Figure 4 The third partial enlarged structural schematic diagram of .

[0039] Description of reference numerals:

[0040] 1. Sprocket rod; 2. Chain; 3. Mounting cabin; 31. Guide slide; 32. First connecting rod; 33. Equidistant spring; 34. Second connecting rod; 341. Waist groove; 342. First circular gear; 35. Third connecting rod; 351. Spherical part; 36. Fourth connecting rod; 361. Second circular gear; 37. Tooth rod; 38. Fixed gear; 39. Fifth connecting rod; 4. Support plate; 41. L-shaped hanging rod; 411. Hook rod; 4111. Contact foot part; 4112. Push rod part; 5. Tenon part; 51. Inclined surface; 52. Arc plate; 521. triangular slot; 53. V-shaped elastic connecting arm; 54. negative pressure surface; 6. base; 61. first resistance spring; 7. push plate; 71. five connecting rods; 72. rectangular slide groove; 721. second resistance spring; 73. sixth connecting rod; 8. negative pressure tongue; 81. extension; 82. short shaft; 9. slide rail; 91. guide rod; 92. return groove; 921. rectangular frame; 922. rectangular core plate; 923. guide block; 93. slot; 10. compression spring; 11. arc-shaped metal plate; 12. universal ball; 121. seventh connecting rod. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0042] like Figure 1-7 As shown, a chain-type printed decorative paper conveying device comprises symmetrically arranged sprocket rods 1, and chains 2 are sleeved on the sprockets of the two sprocket rods 1;

[0043] It also includes a plurality of mounting compartments 3 equidistantly arranged on the chain 2 and a support plate 4 with tenon members 5 symmetrically arranged on the end surface;

[0044] The mortise and tenon member 5 is inserted into the installation chamber 3 and is in abutment connection with the base 6 arranged therein and connected thereto through a first resistance spring 61 , so that the support plate member 4 can move relative to the installation chamber 3 .

[0045] Specifically, the embodiment includes a rounded rectangular guide frame, and the guide frame is fixedly installed on the frame by bolts, and then placed on the ground through the frame, and the sprocket rod 1 is installed through the bearing seat on the guide frame, and then one of the sprocket rods 1 is directly driven by the three-phase asynchronous motor on the guide frame, or is driven by a belt, or is driven by a chain.

[0046] The chain 2 is located in the groove of the guide rail frame, and the Figure 1 The multiple installation cabins 3 above are kept horizontal with the support of the guide rail frame.

[0047] In the above technology, the support plate 4 is designed to be inserted into the installation cabin 3 through the tenon 5 thereon and abut against the base 6. When multiple support plate members 4 are subjected to negative pressure from the printed decorative paper roll, they will fit the surface of the printed decorative paper roll to form a concave discontinuous arc surface, thereby limiting the printed decorative paper roll and preventing it from rolling due to the inertia brought by the conveying direction during transportation.

[0048] As an embodiment further provided by the present invention, a guide slide 31 is symmetrically slidably arranged in the installation cabin 3, a first connecting rod 32 symmetrically rotatably connected to the guide slide 31 is rotatably connected on the base 6, and an equidistant spring 33 is fixedly connected between the two guide slides 31.

[0049] Specifically, when the mortise and tenon 5 is inserted into the installation compartment 3 and abuts against the base 6, as it is pressed downward, the base 6 moves downward, and the two guide slides 31 separate from each other, thereby pulling the equidistant spring 33 to be stretched and deformed, and cooperate with the first resistance spring 61 to be subjected to force, thereby achieving force distribution and reducing the pressure on the first resistance spring 61.

[0050] As another embodiment further provided by the present invention, the mortise 5 has at least two inclined surfaces 51, and further includes a V-shaped elastic connecting arm 53 with one end fixed to the inner wall of the mortise 5 and the other end connected to one end of the arc-shaped plate 52 movably arranged in the notch of the inclined surface 51;

[0051] A second connecting rod 34 is rotatably provided on the inner wall of the installation chamber 3, a third connecting rod 35 is rotatably provided on the end of the second connecting rod 34, a fourth connecting rod 36 is rotatably provided on the third connecting rod 35, and the second end of the fourth connecting rod 36 is located in a waist groove 341 provided on the second connecting rod 34 and slides therein, and a spherical portion 351 is provided on the end of the third connecting rod 35;

[0052] The spherical portion 351 is slidably connected to the arc plate 52 , so that the end of the arc plate 52 extends out of the notch to be hung and fixed to the L-shaped hanging rod 41 fixedly installed on the supporting plate 4 .

[0053] Furthermore, a fifth connecting rod 39 is rotatably provided on the second connecting rod 34 , and a second end of the fifth connecting rod 39 is rotatably connected to the guide slide 31 .

[0054] Furthermore, a gear rod 37 that moves along the waist groove 341 is slidably provided on the second connecting rod 34, a fixed gear 38 is fixedly installed on the inner wall of the mounting chamber 3, a first circular gear 342 that meshes with the fixed gear 38 is rotatably provided on the second connecting rod 34, and the gear rod 37 meshes with the first circular gear 342 and the second circular gear 361 that is fixedly installed on the fourth connecting rod 36.

[0055] Specifically, in the embodiment, when the two guide slides 31 are separated from each other, the guide slide 31 pushes the fifth connecting rod 39 so that the second connecting rod 34 Figure 4During the upward swing, the first circular gear 342 rotates around the fixed gear 38, thereby driving the gear rod 37 to rotate in a Figure 5 The position shown in the figure moves toward the right side, thereby driving the second circular gear 361 to roll, thereby moving to the right side of the waist groove 341, thereby driving the fourth connecting rod 36 to deflect while moving horizontally, thereby driving the spherical portion 351 to push one end of the arc plate 52 to Figure 4 As shown in the figure, the end of the arc plate 52 at this time extends out of the notch, so as to be hung and fixed with the L-shaped hanging rod 41. Thus, the tenon 5 and the base plate 6 are locked into one. And in this locked state, the tenon 5 can be kept Figure 4 The position shown is the reference left and right swing, that is Figure 2 Dotted line shown.

[0056] As another embodiment further provided by the present invention, the L-shaped hanging rod 41 is divided into a horizontal part and a vertical part according to the structure, and further includes a push plate 7, one end of which is rotatably provided with a fifth connecting rod 71, a rectangular slide groove 72 is provided on the push plate 7, a sixth connecting rod 73 is slidably provided in the rectangular slide groove 72, the fifth connecting rod 71 is rotatably provided on the horizontal part, and the sixth connecting rod 73 is rotatably provided on the vertical part;

[0057] A second stop spring 721 is disposed in the rectangular slot 72. The second stop spring 721, in a default state, causes one end of the sixth connecting rod 73 in the rectangular slot 72 to be away from the fifth connecting rod 71, so that the included angle between the push plate 7 and the bottom of the installation chamber 3 is 45°.

[0058] The arc-shaped plate 52 extending out of the notch pushes the pushing plate 7 to reduce the included angle.

[0059] Specifically, when the end of the arc plate 52 extends out of the notch and into the L-shaped hanging rod 41, the end of the arc plate 52 abuts against the push plate 7 in the inclined state, so that Figure 6 The arc plate 52 is in the state shown. The arc plate 52 is in the middle of the push plate 7. As the arc plate 52 continues to extend, the sixth connecting rod 73 is located in the rectangular slot 72 and slides, and approaches the fifth connecting rod 71. At this time, one end of the push plate 7 where the sixth connecting rod 73 is located moves upward, thereby locking the arc plate 52.

[0060] As another embodiment further provided by the present invention, a triangular slot 521 is provided on the outer side of the arc-shaped plate 52, and a hook rod 411 is rotatably provided on the vertical portion. The hook rod 411 is divided into:

[0061] A contact foot portion 4111 abutting against the push plate 7;

[0062] The inner side surface is provided with a triangular clamping piece and a lever portion 4112 that is engaged with the triangular clamping slot 521 .

[0063] Specifically, as the arc plate 52 continues to extend, the sixth connecting rod 73 slides in the rectangular slot 72 and approaches the fifth connecting rod 71, and one end of the push plate 7 where the sixth connecting rod 73 is located moves upward. At this time, the contact foot portion 4111 is pushed upward synchronously by the push plate 7, and the hook rod 411 is deflected, so that the triangular clamping piece on the lever portion 4112 is clamped into the triangular clamping groove 521 provided on the outer side of the arc plate 52, thereby achieving locking.

[0064] As another embodiment further provided by the present invention, the tenon 5 has two negative pressure surfaces 54, and the negative pressure surfaces 54 are pressed and fixed with the negative pressure tongues 8 symmetrically arranged in rotation in the installation cabin 3;

[0065] The inner walls of the installation chamber 3 on opposite sides are provided with vertically movable slide rails 9, and the slide rails 9 are connected to the compression springs 10 provided on the installation chamber 3;

[0066] A guide rod 91 is rotatably provided on the slide rail member 9, a return groove 92 is provided in the guide rod 91, and two clamping grooves 93 are symmetrically provided along the axial direction of the guide rod 91. The negative pressure tongue 8 includes an extension portion 81, and a short shaft 82 movable in the return groove 92 is provided on the extension portion 81.

[0067] Specifically, Figure 4 As shown, when the mortise 5 is inserted into the installation chamber 3 , the first inclined surface 51 will push the negative pressure tongue 8 to flip over until the mortise 5 passes over the negative pressure tongue 8 and flips over and maintains a horizontal state, thereby abutting against the negative pressure surface 54 of the mortise 5 .

[0068] Furthermore, the return groove 92 is composed of a rectangular frame 921 and a rectangular core plate 922 arranged at the axis of the rectangular frame 921, and the distance between the rectangular frame 921 and the rectangular core plate 922 forms an annular groove; two slots 93 are opened on the outer walls on opposite sides of the rectangular core plate 922 and are arranged in the center; a guide block 923 is provided on the inner wall of the rectangular frame 921, and the guide block 923 cooperates with the slot 93 to allow the short shaft 82 to be introduced / exported from the slot 93 and return to the annular groove.

[0069] When the tenon 5 is inserted into the installation chamber 3 and the first inclined surface 51 pushes the negative pressure tongue 8 to turn over, the short shaft 82 is Figure 7 The upper card slot 93 is moved out and slides into the lower slot under the guidance of the guide block 923 .

[0070] Until the mortise 5 passes over the negative pressure tongue 8 and flips over and maintains a horizontal state, it abuts against the negative pressure surface 54 of the mortise 5. During this process, the short shaft 82 is guided by the guide block 923 and slides into the lower groove 93, thereby pulling the negative pressure tongue 8 to move backward, thereby pressing it against the negative pressure surface 54.

[0071] As another embodiment further provided by the present invention, an arc-shaped metal plate 11 is provided on the installation cabin 3, a universal ball 12 is movably provided on the arc-shaped metal plate 11, and a seventh connecting rod 121 is rotatably provided on the universal ball 12 and the slide rail member 9;

[0072] The arc-shaped metal sheet member 11 is deformed by the negative pressure of the inclined tenon member 5 .

[0073] Specifically, when the plurality of support plate members 4 are subjected to negative pressure from the printed decorative paper roll, they will fit the surface of the printed decorative paper roll, thereby forming a concave discontinuous arc surface. When the tenon member 5 swings and presses on the arc-shaped metal plate member 11, when the arc-shaped metal plate member 11 is pressed, the slide rail member 9 is pressed downward, and the synchronous downward pressure of the slide rail member 9 drives the guide rod 91 toward Figure 7 The right side movement pushes the tenon-joint member 5 to move in the opposite direction of the support plate member 4 .

[0074] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A chain-type printed decorative paper conveying device, characterized in that: It comprises symmetrically arranged sprocket rods (1), wherein chains (2) are sleeved on the sprockets of two of the sprocket rods (1); It also comprises a plurality of installation compartments (3) arranged equidistantly on the chain (2) and a support plate (4) with tenon parts (5) symmetrically arranged on the end surface; The mortise and tenon member (5) is inserted into the installation chamber (3) and is abutted against a base (6) arranged therein and connected thereto via a first resistance spring (61), so that the support plate member (4) can move relative to the installation chamber (3).

2. A chain-type printed decorative paper conveying device according to claim 1, characterized in that: A guide slide (31) is symmetrically slidably arranged in the installation cabin (3), a first connecting rod (32) symmetrically rotatably connected to the guide slide (31) is symmetrically rotatably connected on the base (6), and an equidistant spring (33) is fixedly connected between the two guide slides (31).

3. A chain-type printed decorative paper conveying device according to claim 1, characterized in that: The mortise and tenon (5) has at least two inclined surfaces (51), and also includes a V-shaped elastic connecting arm (53) with one end fixed to the inner wall of the mortise and tenon (5) and the other end connected to one end of an arc-shaped plate (52) movably arranged in the notch of the inclined surface (51); A second connecting rod (34) is rotatably provided on the inner wall of the installation cabin (3), a third connecting rod (35) is rotatably provided on the end of the second connecting rod (34), a fourth connecting rod (36) is rotatably provided on the third connecting rod (35), the second end of which is located and slides in a waist groove (341) provided on the second connecting rod (34), and a spherical portion (351) is provided on the end of the third connecting rod (35); The spherical portion (351) is slidably connected to the arc-shaped plate (52), so that the end of the arc-shaped plate (52) extends out of a notch to be hung with an L-shaped hanging rod (41) fixedly mounted on the support plate (4).

4. A chain-type printed decorative paper conveying device according to claim 3, characterized in that: The second connecting rod (34) is rotatably provided with a fifth connecting rod (39) whose second end is rotatably connected to the guide slide (31).

5. A chain-type printed decorative paper conveying device according to claim 3, characterized in that: A gear rod (37) is slidably arranged on the second connecting rod (34) and moves along the direction of the waist groove (341); a fixed gear (38) is fixedly installed on the inner wall of the installation chamber (3); a first circular gear (342) meshing with the fixed gear (38) is rotatably arranged on the second connecting rod (34); the gear rod (37) meshes with the first circular gear (342) and the second circular gear (361) fixedly installed on the fourth connecting rod (36).

6. A chain-type printed decorative paper conveying device according to claim 3, characterized in that: The L-shaped hanging rod (41) is divided into a horizontal part and a vertical part according to the structure, and also includes a push plate (7), one end of which is rotatably provided with a fifth connecting rod (71), a rectangular sliding groove (72) is provided on the push plate (7), a sixth connecting rod (73) is slidably provided in the rectangular sliding groove (72), the fifth connecting rod (71) is rotatably provided on the horizontal part, and the sixth connecting rod (73) is rotatably provided on the vertical part; A second stop spring (721) is arranged in the rectangular slide groove (72), and in a default state, the second stop spring (721) causes one end of the sixth connecting rod (73) located in the rectangular slide groove (72) to be away from the fifth connecting rod (71), so that the angle between the push plate (7) and the bottom of the installation cabin (3) is 45°; The arc-shaped plate (52) extending out of the notch pushes the pushing plate (7) to reduce the included angle.

7. A chain-type printed decorative paper conveying device according to claim 6, characterized in that: A triangular slot (521) is provided on the outer side of the arc-shaped plate (52), and a hook rod (411) is rotatably provided on the vertical portion. The hook rod (411) is divided into the following parts with the rotation connection as the dividing line: A contact foot portion (4111) that is in contact with the push plate (7); The inner side surface is provided with a triangular clamping piece, and a lever portion (4112) is clamped and matched with the triangular clamping groove (521).

8. The chain-type printed decorative paper conveying device according to claim 1, characterized in that: The tenon piece (5) has two negative pressure surfaces (54), and the negative pressure surfaces (54) are pressed and fixed with negative pressure tongues (8) symmetrically arranged in rotation in the installation cabin (3); The inner walls of the installation chamber (3) on two opposite sides are slidably provided with slide rails (9) movable in the vertical direction, and the slide rails (9) are connected to compression springs (10) provided on the installation chamber (3); A guide rod (91) is rotatably arranged on the slide rail member (9), a return groove (92) is provided in the guide rod (91), and two clamping grooves (93) are symmetrically provided along the axis of the guide rod (91). The negative pressure tongue (8) includes an extension portion (81), and a short shaft (82) is provided on the extension portion (81) and is movable in the return groove (92).

9. A chain-type printed decorative paper conveying device according to claim 8, characterized in that: The installation cabin (3) is provided with an arc-shaped metal plate (11), a universal ball (12) is movably provided on the arc-shaped metal plate (11), and a seventh connecting rod (121) is rotatably provided on the universal ball (12) and the slide rail member (9); The arc-shaped metal plate part (11) is deformed by the negative pressure of the inclined tenon part (5).

10. A chain-type printed decorative paper conveying device according to claim 1, characterized in that: The return groove (92) is composed of a rectangular frame (921) and a rectangular core plate (922) arranged at the axis of the rectangular frame (921), and the distance between the rectangular frame (921) and the rectangular core plate (922) forms an annular groove; The two clamping grooves (93) are opened on the outer walls of the rectangular core plate (922) on two opposite sides and arranged in the center; The inner wall of the rectangular frame (921) is provided with a guide block (923), and the guide block (923) cooperates with the slot (93) to allow the short shaft (82) to be introduced into / exported from the slot (93) and returned to the annular groove.

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