Paper positioning and deviation rectifying structure of printing machine

Abstract

The utility model discloses a printing machine paper positioning deviation rectifying structure which comprises a paper tube supporting assembly, a fixed extrusion assembly, a deviation measuring assembly and a movable extrusion assembly which are sequentially arranged from back to front, the paper tube supporting assembly supports a paper tube, and paper of the paper tube extends towards a printing machine body through the fixed extrusion assembly, the deviation measuring assembly and the movable extrusion assembly. The deviation measuring assembly comprises two positioning pieces arranged left and right, each positioning piece comprises a sliding seat, a positioning roller, an elastic piece and a distance measuring instrument, the sliding seats can move left and right, the positioning rollers are rotationally connected to the inner sides of the sliding seats and abut against the edge of paper, the elastic pieces are installed on the outer sides of the sliding seats and used for resetting the positioning rollers, and the distance measuring instruments are located on the outer sides of the sliding seats. The detection module detects the movement amount of the sliding seat. The positioning deviation rectifying structure further comprises a first driver capable of driving the movable extrusion assembly to move left and right. The utility model provides a paper positioning and deviation rectifying structure of a printing machine, which prevents a positioning roller from crushing the edge of paper.

Description

TECHNICAL FIELD

[0001] The utility model relates to printing machine technical field especially relates to a printing machine paper positioning deviation rectifying structure. BACKGROUND

[0002] The printing machine paper needs to prevent paper deviation through the positioning structure when feeding, the existing positioning structure such as the patent shown in application No. CN202121297910.2, it includes support seat, positioning roller, upper extrusion roller and lower extrusion roller, when using, paper reel is installed on the support seat, the paper on the paper reel passes between the positioning roller, the positioning roller is located paper left and right two sides, prevent paper deviation left and right;

[0003] The positioning roller in the existing positioning structure cannot move left and right, when paper offset is relatively big, such as paper left offset is relatively big, the left positioning roller is easy to press the paper left edge and wrinkle. UTILITY MODEL CONTENT

[0004] The utility model discloses in order to solve the positioning roller of the existing positioning structure and press the paper edge and wrinkle's shortcoming, propose a kind of printing machine paper positioning deviation rectifying structure, prevent positioning roller and press the paper edge.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] A kind of printing machine paper positioning deviation rectifying structure, including the paper tube support assembly, fixed extrusion assembly, deviation measuring component and mobile extrusion assembly arranged in order from back to front, paper tube support assembly supports paper tube, the paper of paper tube extends to printing machine main body by fixed extrusion assembly, deviation measuring component and mobile extrusion assembly;

[0007] Deviation measuring component includes two positioning pieces arranged left and right, positioning piece includes sliding seat, positioning roller, elastic member and range finder, sliding seat is movable left and right, positioning roller is rotatably connected in the inner side of sliding seat, and is in abutment with paper edge, elastic member is installed in the outer side of sliding seat, for resetting positioning roller, range finder is located in the outer side of sliding seat, for detecting sliding seat moving amount;

[0008] Positioning deviation rectifying structure further includes the first driver that mobile extrusion assembly can be driven left and right movement.

[0009] Through the above setting, positioning roller can move left and right, when paper offset, the pressure between positioning roller and paper edge will not be very big, place positioning roller and press the paper edge and wrinkle, the first driver drives mobile extrusion assembly according to paper offset, so that paper is back to normal, reach deviation rectifying effect.

[0010] Further, the positioning member further comprises a support column, a bottom plate and a support plate, the bottom plate is horizontally fixedly connected to the upper end of the support column, the sliding seat is slidably connected to the upper side of the bottom plate, the support plate is fixedly connected to the upper side of the bottom plate, the elastic member is installed between the support plate and the sliding seat, and the range finder is fixedly connected to the upper side of the support plate.

[0011] Further, the paper tube supporting assembly comprises support seats, conical members and a second driver, the support seats are arranged in pairs and are arranged left and right, the conical members are rotatably connected to the inner sides of the support seats, and the second driver drives the two support seats to close to enable the conical members to be inserted into the end portions of the paper tubes.

[0012] Through the above arrangement, first, the paper tube supporting assembly can support paper tubes with different inner diameters, and second, when the paper tube supporting assembly supports the paper tube, the paper tube is automatically centered.

[0013] Further, the second driver comprises a screw rod and a motor, the screw rod comprises first and second threaded portions with opposite screw directions, the first threaded portion is in threaded connection with one of the support seats, the second threaded portion is in threaded connection with the other support seat, and the motor is in transmission connection with the screw rod.

[0014] Through the above arrangement, the motor drives the support seats to open and close through the screw rod.

[0015] Further, the fixed extrusion assembly comprises first mounting columns and first extrusion rollers, the first mounting columns are arranged on the side of the paper, and the first extrusion rollers support the upper and lower sides of the paper and are rotatably connected to the first mounting columns.

[0016] Further, the movable extrusion assembly comprises second mounting columns and second extrusion rollers, the second mounting columns are arranged on the side of the paper and can move left and right, and the second extrusion rollers support the upper and lower sides of the paper and are rotatably connected to the second mounting columns.

[0017] Further, the second driver is a servo cylinder.

[0018] Through the above arrangement, the motion accuracy of the second driver is improved.

[0019] Further, the rigidity of the elastic member is less than 1 N / mm.

[0020] Through the above arrangement, the pressure between the edge of the paper and the positioning roller is further reduced. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic view of the positioning and deviation correcting structure of the embodiment.

[0022] Figure 2 It is a schematic view of the positioning and deviation correcting structure of the embodiment. Figure 1 It is an enlarged view of A of the positioning and deviation correcting structure of the embodiment.

[0023] Figure 3 It is a top view of the positioning and deviation correcting structure of the embodiment.

[0024] Figure 4 For Figure 3 The enlarged view of B.

[0025] Figure 5 The schematic view of the positioning roller movement when the paper of the embodiment is offset. DETAILED DESCRIPTION

[0026] The technical scheme of the utility model will be further specifically explained below by taking examples and in combination with the drawings.

[0027] As Figures 1 to 5 A paper positioning and deviation correcting structure of a printing machine, comprising, from back to front, a paper tube supporting assembly 3, a fixed extrusion assembly 4, a deviation measuring assembly, and a movable extrusion assembly 5. The paper tube supporting assembly 3 supports a paper tube 6. The paper 8 of the paper tube 6 extends to a printing machine body (not shown in the figure) through the fixed extrusion assembly 4, the deviation measuring assembly, and the movable extrusion assembly 5.

[0028] The deviation measuring assembly comprises two positioning members 7 arranged left and right. The positioning member 7 comprises a sliding seat 71, a positioning roller 72, an elastic member 73, and a distance meter 74. The sliding seat 71 is movable left and right. The positioning roller 72 is rotationally connected to the inner side of the sliding seat 71 and abuts against the edge of the paper 8. The elastic member 73 is installed on the outer side of the sliding seat 71 and is used to reset the positioning roller 72. The distance meter 74 is located on the outer side of the sliding seat 71 and is used to detect the movement amount of the sliding seat 71.

[0029] The positioning and deviation correcting structure further comprises a first driver 9 that can drive the movable extrusion assembly 5 to move left and right.

[0030] Through the above arrangement, the positioning roller 72 is movable left and right. When the paper 8 is offset, the pressure between the positioning roller 72 and the edge of the paper 8 will not be too large, so as to prevent the positioning roller 72 from crushing the edge of the paper 8. The first driver 9 drives the movable extrusion assembly 5 according to the offset amount of the paper 8, so as to straighten the paper 8 and achieve the effect of deviation correction.

[0031] The positioning and deviation correcting structure of the present application further comprises a base that is placed on the ground. The paper tube supporting assembly 3, the fixed extrusion assembly 4, the deviation measuring assembly, the movable extrusion assembly 5, and the first driver 9 are all installed on the upper side of the base. The positioning and deviation correcting structure is installed at the paper inlet of the printing machine body of the printing machine. The positioning and deviation correcting structure is used to guide the paper 8 of the paper tube 6 into the printing machine body for printing by the printing machine body.

[0032] When the positioning and deviation correcting structure is used, the paper tube 6 is installed on the paper tube supporting assembly 3. The paper 8 on the paper tube 6 enters the printing machine body through the fixed extrusion assembly 4, the deviation measuring assembly, and the movable extrusion assembly 5. Figure 1The fixed extrusion assembly 4 supports the upper and lower sides of the paper 8 to prevent the paper 8 from moving up and down, and the movable extrusion assembly 5 supports the upper and lower sides of the paper 8 to prevent the paper 8 from moving up and down, and the paper 8 is straightened horizontally between the fixed extrusion assembly 4 and the movable extrusion assembly 5, and the deviation measuring assembly is close to the movable extrusion assembly 5, Figure 1 The positioning rollers 72 of the two positioning members 7 abut against the left and right sides of the paper 8, and the elastic members 73 have zero elastic force, for example Figure 2 、 Figure 3 And Figure 4 When the paper 8 moves forward, if the paper 8 deviates to the right, for example Figure 5 The right edge of the paper 8 will extrude the positioning roller 72, and the positioning roller 72 will move rightward correspondingly with the sliding seat 71 to prevent the positioning roller 72 from crushing the edge of the paper 8 due to excessive pressure, for example Figure 5 The elastic member 73 is compressed, and the distance measuring instrument 74 specifically adopts an infrared distance measuring instrument 74, which can measure the rightward movement of the sliding seat 71, and the rightward movement of the sliding seat 71 is the rightward deviation of the paper 8, for example, if the rightward deviation of the paper 8 is 2mm, the measurement value of the distance measuring instrument 74 is transmitted to the controller, the controller controls the first driver 9, the first driver 9 drives the movable extrusion assembly 5 to move leftward by 2mm, and the deviation of the paper 8 is zeroed, so that the paper 8 is returned to the normal position, and the deviation correction effect is achieved. After the paper 8 is returned to the normal position, the elastic member 73 on the right side restores to push the sliding seat 71 back to the initial position.

[0033] As an implementation manner, the positioning member 7 further comprises a support column 75, a bottom plate 76 and a support plate 77, the bottom plate 76 is horizontally fixedly connected to the upper end of the support column 75, the sliding seat 71 is slidably connected to the upper side of the bottom plate 76, the support plate 77 is fixedly connected to the upper side of the bottom plate 76, the elastic member 73 is installed between the support plate 77 and the sliding seat 71, and the distance measuring instrument 74 is fixedly connected to the upper side of the support plate 77.

[0034] The support column 75 is provided with two vertical fixed connections on the upper side of the bottom plate 76, the bottom plate 76 is horizontally fixedly connected to the upper end of the support column 75, the sliding seat 71 is slidably connected to the upper side of the bottom plate 76 through a track to reduce the movement resistance of the sliding seat 71 and further reduce the pressure between the paper 8 and the positioning roller 72, the support plate 77 is arranged outside the sliding seat 71 and is vertically fixedly connected to the upper side of the bottom plate 76, the elastic member 73 specifically adopts a spring, and the spring extends leftward and rightward and is installed between the support plate 77 and the sliding seat 71.

[0035] As an implementation manner, the paper tube supporting assembly 3 comprises a support seat 31, a conical member 32 and a second driver 33, the support seat 31 is provided with two and arranged left and right, the conical member 32 is rotatably connected to the inner side of each support seat 31, and the second driver 33 drives the two support seats 31 to fold to make the conical member 32 inserted into the end of the paper tube 6.

[0036] Through the above arrangement, first, the paper tube support assembly 3 can support paper tubes 6 of different inner diameters, second, when the paper tube support assembly 3 supports the paper tube 6, the paper tube 6 is automatically centered.

[0037] The support seat 31 of the application is connected to the upper side of the base through track sliding, so as to reduce the movement resistance of the support seat 31. The conical parts 32 are basically conical, the top points of the left and right two conical parts 32 are opposite to each other, and are symmetrically connected to the inner sides of the upper ends of the left and right two support seats 31. When the paper tube 6 is installed, the paper tube 6 is placed between the two conical parts 32. The second driver 33 drives the support seats 31 to close, and the left and right two conical parts 32 are inserted into the paper tube 6 to clamp the paper tube 6. When the paper tube 6 outputs the paper 8, the paper tube 6 rotates synchronously with the conical parts 32. The second driver 33 drives the two support seats 31 to open, and the conical parts 32 are pulled out from the end of the paper tube 6 outward, so as to unload the paper tube 6.

[0038] As an implementation manner, the second driver 33 includes a screw rod and a motor 332. The screw rod includes a first threaded part 331 and a second threaded part 333 with opposite screw directions. The first threaded part 331 is threadedly connected with one of the support seats 31, and the second threaded part 333 is threadedly connected with the other support seat 31. The motor 332 is in transmission connection with the screw rod.

[0039] Through the above arrangement, the motor 332 drives the support seat 31 to open and close through the screw rod.

[0040] The screw rod of the application extends along the left and right directions. The first threaded part 331 and the second threaded part 333 are coaxially fixedly connected. The pitches of the first threaded part 331 and the second threaded part 333 are equal. When the motor 332 drives the screw rod to rotate, the first threaded part 331 and the second threaded part 333 rotate synchronously, so that the two support seats 31 can move in opposite directions at the same speed, thereby enabling the two support seats 31 to open or close.

[0041] As an implementation manner, the fixed extrusion assembly 4 includes a first mounting column 41 and a first extrusion roller 42. The first mounting column 41 is arranged on the side of the paper 8. The first extrusion roller 42 supports the upper and lower sides of the paper 8 and is in rotational connection with the first mounting column 41.

[0042] Specifically, the number of the first extrusion rollers 42 is two. The two first extrusion rollers 42 are horizontally arranged. The distance between the two first extrusion rollers 42 is matched with the thickness of the paper 8. The two first extrusion rollers 42 abut against the upper and lower sides of the paper 8, thereby stabilizing the paper 8 and flattening the paper 8.

[0043] As an implementation manner, the movable extrusion assembly 5 includes a second mounting column 51 and a second extrusion roller 52. The second mounting column 51 is arranged on the side of the paper 8 and is movable leftward and rightward. The second extrusion roller 52 supports the upper and lower sides of the paper 8 and is in rotational connection with the second mounting column 51.

[0044] Specifically, the number of the second pressing rollers 52 is two, the two second pressing rollers 52 are arranged horizontally, the distance between the two second pressing rollers 52 is matched with the thickness of the paper 8, the two second pressing rollers 52 are in contact with the upper and lower sides of the paper 8, and the two second pressing rollers 52 play the roles of stabilizing and flattening the paper 8.

[0045] Specifically, the number of the second mounting columns 51 is two, the two second mounting columns 51 support the left and right ends of the second pressing rollers 52, the lower ends of the two second mounting columns 51 are fixedly connected to the sliding beams, and the sliding beams are slidably connected to the base through the tracks, so that the stability of the moving pressing assembly 5 in the left and right movements is improved.

[0046] As an implementation manner, the second driver 33 is a servo cylinder.

[0047] Through the above arrangement, the movement accuracy of the second driver 33 is improved.

[0048] The servo cylinder has the characteristics of high speed and high accuracy, so that the paper 8 can be accurately aligned.

[0049] As an implementation manner, the rigidity of the elastic member 73 is less than 1 N / mm.

[0050] Through the above arrangement, the pressure between the edge of the paper 8 and the positioning roller 72 is further reduced.

[0051] The rigidity of the elastic member 73 of the present application is as small as possible, and the function of the elastic member 73 is basically limited to the resetting of the positioning roller 72 and the sliding seat 71. When the paper 8 is deviated, the pressure between the positioning roller 72 and the edge of the paper 8 is basically 0.

[0052] It should be understood that, for those skilled in the art, improvements or changes can be made according to the above description, and all these improvements and changes shall belong to the protection scope of the appended claims of the present utility model.

Claims

1. A paper positioning and correction structure for a printing press, characterized in that, It comprises paper tube supporting assembly, fixed extrusion assembly, deviation measuring assembly and mobile extrusion assembly arranged from back to front, the paper tube supporting assembly supports the paper tube, the paper of the paper tube extends to the printing machine body through the fixed extrusion assembly, deviation measuring assembly and mobile extrusion assembly; The deviation measuring assembly comprises two positioning members arranged left and right, the positioning member comprises sliding seat, positioning roller, elastic member and distance meter, the sliding seat is movable left and right, the positioning roller is rotatably connected to the inner side of the sliding seat and abuts against the edge of the paper, the elastic member is installed on the outer side of the sliding seat and is used for resetting the positioning roller, and the distance meter is located on the outer side of the sliding seat and is used for detecting the moving amount of the sliding seat. The positioning and deviation correcting structure further comprises a first driver that can drive the mobile extrusion assembly to move left and right.

2. The paper positioning and correcting structure of the printing machine according to claim 1, characterized in that, The positioning member further comprises support column, bottom plate and support plate, the bottom plate is horizontally fixedly connected to the upper end of the support column, the sliding seat is slidably connected to the upper side of the bottom plate, the support plate is fixedly connected to the upper side of the bottom plate, the elastic member is installed between the support plate and the sliding seat, and the distance meter is fixedly connected to the upper side of the support plate.

3. The paper positioning and correcting structure of the printing machine according to claim 2, characterized in that, The paper tube supporting assembly comprises support seat, taper and second driver, the support seat is provided with two and arranged left and right, the inner side of the support seat is rotatably connected with the taper, and the second driver drives the two support seats to fold to make the taper inserted into the end of the paper tube.

4. The paper positioning and correcting structure of the printing machine according to claim 3, characterized in that, The second driver comprises screw rod and motor, the screw rod comprises first threaded part and second threaded part with opposite screw directions, the first threaded part is threadedly connected with one of the support seats, the second threaded part is threadedly connected with the other support seat, and the motor is in transmission connection with the screw rod.

5. The paper positioning and correcting structure of the printing machine according to claim 1, characterized in that, The fixed extrusion assembly comprises first mounting column and first extrusion roller, the first mounting column is arranged on the side of the paper, the first extrusion roller supports the upper and lower sides of the paper and is rotatably connected with the first mounting column.

6. The paper positioning and correcting structure of the printing machine according to claim 1, characterized in that, The mobile extrusion assembly comprises second mounting column and second extrusion roller, the second mounting column is arranged on the side of the paper and is movable left and right, and the second extrusion roller supports the upper and lower sides of the paper and is rotatably connected with the second mounting column.

7. The paper positioning and correcting structure of the printing machine according to claim 3, characterized in that, The second driver is a servo cylinder.

8. The paper positioning and correcting structure of the printing machine according to claim 1, characterized in that, The rigidity of the elastic member is less than 1 N / mm.

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