Heating preheating device of printing equipment

Abstract

The utility model relates to the technical field of printing equipment, in particular to a heating preheating device of printing equipment. Comprising a preheating box, two preheating rollers, two electric heaters and two temperature sensors. The preheating box comprises a bottom shell, a first rotating cover and a second rotating cover; the preheating roller is of a hollow structure, the two ends of the preheating roller communicate with rotating pipes, and the preheating roller is rotationally installed on the bottom shell through the rotating pipes at the two ends of the preheating roller. Two limiting rollers are arranged on one side of each of the two preheating rollers side by side up and down, and the limiting rollers are rotationally mounted on the bottom shell; the two electric heaters are both installed on the bottom shell. The two temperature sensors are installed on the bottom shell. According to the technical scheme, the wrapping angle between the paper and the preheating roller can be increased through the installed limiting roller, so that the contact area between the paper and the preheating roller is increased, the preheating time of the paper is prolonged at the same conveying speed, and the preheating effect on the paper is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of printing equipment, in particular to a temperature rising and preheating device for printing equipment. Background Art

[0002] A printing press generally consists of mechanisms such as plate loading, inking, pressing, and paper feeding. The principle is that the text or image to be printed is first made into a printing plate and mounted on the printing press. Ink is then applied to the text or image on the plate by a human or the printing machine, and then directly or indirectly transferred to paper or other printing materials. Before printing, the paper needs to be preheated to accelerate the drying of the ink.

[0003] Chinese patent publication number CN213891784U discloses a preheating device for a printing press, which belongs to the field of printing presses. It includes a frame located at a workstation in front of the printing press, a paper roll connected to the frame and used to convey a roll of paper, the frame is provided with a preheating roller for preheating the roll of paper, and a pressing roller abutting the outer peripheral wall of the preheating roller. The roll of paper passes between the preheating roller and the pressing roller along its working direction and is pressed against the preheating roller.

[0004] The above-mentioned disclosed patent has the following technical defects: the contact area between the preheating roller and the paper is small, so that the heating time of the paper is short, which may result in the paper not being fully preheated. Utility Model Content

[0005] The utility model aims to solve the problems existing in the background technology and proposes a temperature rising and preheating device for printing equipment.

[0006] The technical solution of the utility model is a temperature rising and preheating device for printing equipment, comprising:

[0007] The preheating box includes a bottom shell, a first rotating cover, and a second rotating cover. The first rotating cover and the second rotating cover are respectively rotatably mounted on both ends of the bottom shell. The first rotating cover and the second rotating cover have a detachable connection structure. Both the first rotating cover and the second rotating cover are provided with a perforation.

[0008] Two preheating rollers, each having a hollow structure, are connected to a rotating tube at both ends of the preheating roller, and are rotatably mounted on the bottom shell through the rotating tubes at both ends; two limiting rollers are arranged side by side up and down on one side of each preheating roller, and the limiting rollers are rotatably mounted on the bottom shell;

[0009] Two electric heaters installed on the bottom shell for heating the inside of the two preheating rollers respectively;

[0010] Two temperature sensors are mounted on the bottom shell for measuring the internal temperatures of the two preheating rollers respectively.

[0011] Preferably, the temperature rising and preheating device of the printing equipment also includes two sets of power components for driving the two preheating rollers to rotate respectively, and the power components include a servo motor, a gear ring and a gear, wherein the servo motor is installed on the bottom shell, the gear is installed on the output shaft of the servo motor, the gear ring is installed on the rotating tube, and the gear ring is meshed with the gear.

[0012] Preferably, a locking mechanism is installed on the second rotating cover, and the locking mechanism includes an insert block and a first elastic connection component. A notch is provided on the second rotating cover, and the insert block is slidably arranged on the inner side of the notch. The first elastic connection component includes a first guide rod, a first spring and a first limit block, wherein the first guide rod movably passes through one side of the second rotating cover, and the two ends of the first guide rod are respectively connected to the insert block and the first limit block, the first spring is sleeved and installed on the first guide rod, and a slot is provided on the first rotating cover.

[0013] Preferably, a clamping mechanism is installed on both the first rotating cover and the second rotating cover, and the clamping mechanism includes a pressure roller, a rotating frame and multiple groups of second elastic connection components. The pressure roller is rotatably installed on the rotating frame, and the second elastic connection component includes a second guide rod, a second spring and a second limit block. The second guide rod movably passes through the inner and outer sides of the preheating box, and the two ends of the second guide rod are respectively connected to the rotating frame and the second limit block, and the second spring is sleeved and installed on the second guide rod.

[0014] Preferably, the cross section of the bottom shell is a "U"-shaped structure; the cross sections of the first rotating cover and the second rotating cover are both "L"-shaped structures.

[0015] Preferably, the main body of the electric heater is mounted on the bottom shell, and the heating wire portion thereof passes through the rotating tube and is arranged inside the preheating roller.

[0016] Preferably, the main body of the temperature sensor is mounted on the bottom shell, and the detection end thereof passes through the rotating tube and is arranged on the inner side of the preheating roller.

[0017] Compared with the prior art, the present invention has the following beneficial technical effects:

[0018] In this technical solution, the installed limiting roller can increase the wrapping angle between the paper and the preheating roller, thereby increasing the contact area between the paper and the preheating roller, and extending the preheating time of the paper at the same transmission speed, thereby improving the preheating effect of the paper.

[0019] The preheating roller and the limit roller are installed in a compact space inside the preheating box, which has the advantage of taking up little space. At the same time, the small preheating box has a good heat preservation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the present utility model.

[0021] Figure 2It is a structural schematic diagram of the first rotating cover and the second rotating cover after being flipped open in the present invention.

[0022] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0023] Figure 4 for Figure 2 Schematic diagram of the local enlarged structure at point A.

[0024] Figure numerals: 101, bottom shell; 1001, perforation; 102, first rotating cover; 1021, slot; 103, second rotating cover; 1031, notch; 2, preheating roller; 201, rotating tube; 4, limiting roller; 5, electric heater; 6, temperature sensor; 71, servo motor; 72, gear ring; 73, gear; 8, pressure roller; 9, rotating frame; 10, insert block; 111, first guide rod; 112, first spring; 113, first limiting block. DETAILED DESCRIPTION

[0025] Example 1

[0026] like Figure 1-Figure 4 As shown, the temperature rising and preheating device of the printing equipment proposed in this embodiment includes a preheating box, two preheating rollers 2, two electric heaters 5 and two temperature sensors 6.

[0027] The preheating box includes a bottom shell 101, a first rotating cover 102 and a second rotating cover 103. The cross-section of the bottom shell 101 is a "U"-shaped structure; the cross-sections of the first rotating cover 102 and the second rotating cover 103 are both "L"-shaped structures. The first rotating cover 102 and the second rotating cover 103 are rotatably mounted on both ends of the bottom shell 101 respectively. There is a detachable connection structure between the first rotating cover 102 and the second rotating cover 103. A locking mechanism is installed on the second rotating cover 103, and the locking mechanism includes an insert block 10 and a first elastic connection component. A notch 1031 is opened on the second rotating cover 103, and the insert block 10 is slidably arranged on the inner side of the notch 1031. The first elastic connection component includes a first guide rod 111, a first The spring 112 and the first limit block 113, wherein the first guide rod 111 movably passes through one side of the second rotating cover 103, and the two ends of the first guide rod 111 are respectively connected to the insert block 10 and the first limit block 113, the first spring 112 is sleeved and installed on the first guide rod 111, and a slot 1021 is provided on the first rotating cover 102. When the first rotating cover 102 and the second rotating cover 103 are disassembled, the moving insert block 10 is used to compress the first spring 112, so that the end of the insert block 10 moves out from the inner side of the slot 1021, thereby releasing the connection and fixation between the first rotating cover 102 and the second rotating cover 103; the first rotating cover 102 and the second rotating cover 103 are both provided with a through hole 1001.

[0028] The preheating roller 2 has a hollow structure, and both ends of the preheating roller 2 are connected with a rotating tube 201. The preheating roller 2 is rotatably mounted on the bottom shell 101 through the rotating tubes 201 at both ends; two limiting rollers 4 are arranged side by side up and down on one side of the two preheating rollers 2, and the limiting rollers 4 are rotatably mounted on the bottom shell 101.

[0029] The two electric heaters 5 are both mounted on the bottom shell 101 and are respectively used to heat the interior of the two preheating rollers 2. The main body of the electric heater 5 is mounted on the bottom shell 101, and its heating wire portion passes through the rotating tube 201 and is arranged inside the preheating roller 2; the two temperature sensors 6 are both mounted on the bottom shell 101 and are respectively used to measure the internal temperature of the two preheating rollers 2. The main body of the temperature sensor 6 is mounted on the bottom shell 101, and its detection end passes through the rotating tube 201 and is arranged on the inner side of the preheating roller 2; the temperature sensor 6 is set to realize real-time detection of the internal temperature of the preheating roller 2. The temperature sensor 6 then feeds back the signal to the controller. By inputting the set temperature range on the controller, when the temperature exceeds the set minimum threshold, the controller controls to start the electric heater 5, so that the internal temperature of the preheating roller 2 rises to the set temperature range.

[0030] The temperature rising and preheating device of the printing equipment also includes two sets of power components for respectively driving the two preheating rollers 2 to rotate. The power components include a servo motor 71, a gear ring 72 and a gear 73, wherein the servo motor 71 is installed on the bottom shell 101, the gear 73 is installed on the output shaft of the servo motor 71, the gear ring 72 is installed on the rotating tube 201, and the gear ring 72 is meshed with the gear 73. The servo motor 71 is started to drive the gear 73 to rotate, and then the gear ring 72 is driven to rotate. The gear ring 72 drives the rotating tube 201 and the preheating roller 2 to rotate, driving the paper to move at a uniform speed, so that the rotation speed of the preheating roller 2 matches the movement speed of the paper. The above structure is set to prevent the paper from being broken due to the large friction between the paper and the preheating roller 2.

[0031] Specifically, before installing the paper, first release the connection between the first rotating cover 102 and the second rotating cover 103, drive the first rotating cover 102 and the second rotating cover 103 to rotate to the same position. Figure 2 As shown, the paper is then passed through the perforation 1001 on one side, and the paper is placed on the two preheating rollers 2 and the four limiting rollers 4, so that the two sides of the paper are respectively in close contact with the surfaces of the two preheating rollers 2, and then the first rotating cover 102 and the second rotating cover 103 are rotated and reset, and then the first rotating cover 102 and the second rotating cover 103 are locked by the provided locking mechanism. At this time, the winding state of the paper is as shown Figure 3As shown; in this technical solution, the installed limiting roller 4 can increase the wrapping angle between the paper and the preheating roller 2, thereby increasing the preheating time of the paper at the same transmission speed, so as to improve the preheating effect of the paper, and the entire device structure is compactly designed, occupies a small space, and has a good thermal insulation effect. Furthermore, in order to improve the thermal insulation capacity of the preheating box, a layer of thermal insulation paint is applied on the inner and outer surfaces of the preheating box.

[0032] Example 2

[0033] like Figure 2 and Figure 3 As shown, the present embodiment proposes a temperature rising and preheating device for a printing device. Compared with the first embodiment, in the present embodiment, in order to achieve the compression of the paper and reduce the wrinkles on the surface of the paper, a compression mechanism is installed on both the first rotating cover 102 and the second rotating cover 103. The compression mechanism includes a pressure roller 8, a rotating frame 9 and a plurality of second elastic connection components. The pressure roller 8 is rotatably installed on the rotating frame 9. The second elastic connection component includes a second guide rod, a second spring and a second limit block. The second guide rod movably passes through the inner and outer sides of the preheating box. The two ends of the second guide rod are respectively connected to the rotating frame 9 and the second limit block. The second spring is sleeved on the second guide rod. Specifically, through the setting of the second elastic connection component, the pressure roller 8 exerts a certain pressure on the surface of the paper, which can flatten the wrinkles on the surface of the paper.

[0034] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A temperature rising and preheating device for a printing device, characterized in that: include: A preheating box, comprising a bottom shell (101), a first rotating cover (102) and a second rotating cover (103), wherein the first rotating cover (102) and the second rotating cover (103) are rotatably mounted on two ends of the bottom shell (101), the first rotating cover (102) and the second rotating cover (103) are detachably connected, and a through hole (1001) is provided on each of the first rotating cover (102) and the second rotating cover (103); Two preheating rollers (2), each having a hollow structure, both ends of the preheating rollers (2) being connected to each other and provided with a rotating tube (201), the preheating rollers (2) being rotatably mounted on the bottom shell (101) via the rotating tubes (201) at both ends; two limiting rollers (4) being arranged side by side in an upper and lower direction on one side of each of the two preheating rollers (2), the limiting rollers (4) being rotatably mounted on the bottom shell (101); Two electric heaters (5) mounted on the bottom shell (101) for heating the interiors of the two preheating rollers (2) respectively; Two temperature sensors (6) are mounted on the bottom shell (101) for respectively measuring the internal temperatures of the two preheating rollers (2).

2. A temperature rising and preheating device for printing equipment according to claim 1, characterized in that: The invention also includes two sets of power components for driving the two preheating rollers (2) to rotate respectively, and the power components include a servo motor (71), a gear ring (72) and a gear (73), wherein the servo motor (71) is mounted on the bottom shell (101), the gear (73) is mounted on the output shaft of the servo motor (71), the gear ring (72) is mounted on the rotating tube (201), and the gear ring (72) is meshed with the gear (73).

3. The temperature rising and preheating device of a printing device according to claim 1, characterized in that: A locking mechanism is installed on the second rotating cover (103), and the locking mechanism includes an insert block (10) and a first elastic connection component. A notch (1031) is opened on the second rotating cover (103), and the insert block (10) is slidably arranged on the inner side of the notch (1031). The first elastic connection component includes a first guide rod (111), a first spring (112) and a first limit block (113), wherein the first guide rod (111) is movable through one side of the second rotating cover (103), and the two ends of the first guide rod (111) are respectively connected to the insert block (10) and the first limit block (113), and the first spring (112) is sleeved and installed on the first guide rod (111). A slot (1021) is opened on the first rotating cover (102).

4. The temperature rising and preheating device of a printing device according to claim 1, characterized in that: A pressing mechanism is installed on both the first rotating cover (102) and the second rotating cover (103), and the pressing mechanism includes a pressing roller (8), a rotating frame (9) and a plurality of second elastic connection components. The pressing roller (8) is rotatably installed on the rotating frame (9). The second elastic connection component includes a second guide rod, a second spring and a second limit block. The second guide rod movably passes through the inner and outer sides of the preheating box. The two ends of the second guide rod are respectively connected to the rotating frame (9) and the second limit block. The second spring is sleeved and installed on the second guide rod.

5. The temperature rising and preheating device of a printing device according to claim 1, characterized in that: The cross section of the bottom shell (101) is a "U"-shaped structure; the cross sections of the first rotating cover (102) and the second rotating cover (103) are both "L"-shaped structures.

6. The temperature rising and preheating device of a printing device according to claim 1, characterized in that: The main body of the electric heater (5) is mounted on the bottom shell (101), and the heating wire portion thereof passes through the rotating tube (201) and is arranged inside the preheating roller (2).

7. The temperature rising and preheating device of a printing device according to claim 1, characterized in that: The main body of the temperature sensor (6) is mounted on the bottom shell (101), and the detection end thereof passes through the rotating tube (201) and is arranged on the inner side of the preheating roller (2).

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