Calender

Abstract

The utility model relates to the technical field of floor production, in particular to a calender. The calender comprises a conveying mechanism and multiple sets of thickness determining mechanisms, the multiple sets of thickness determining mechanisms are arranged side by side at intervals, and the conveying mechanism is arranged between every two adjacent sets of thickness determining mechanisms. Due to the fact that the thickness setting distances in the multiple sets of thickness setting mechanisms arranged from the near end to the far end of the extruder are gradually reduced, stress deformation of a base material is reduced through multi-section calendering setting of the multiple sets of thickness setting mechanisms, and product forming stability is improved. The contact surfaces of the lower rollers in the plurality of groups of thickness determining mechanisms and the base material and the conveying surface of the conveying mechanism are on the same plane, so that the PET / PETG base material is not subjected to bending stress and can be stably calendered and molded, the requirement of high straightness required by production of the base material such as the PET / PETG can be met, the production qualification rate of the base material such as the PET / PETG is further improved, and the production cost of the base material such as the PET / PETG is reduced. The production efficiency of PET / PETG (polyethylene terephthalate / polyethylene terephthalate glycol) base materials is further improved through the calender suitable for the PET / PETG calender.

Description

Technical Field

[0001] The utility model relates to the technical field of floor production, in particular to a calender. Background Art

[0002] As society continues to progress, the demand for PET (polyethylene terephthalate) substrates is growing. In the prior art, PET / PETG substrates are primarily produced using WPC (Wood-Plastic Composites) or SPC (Stone Plastic Composite) production equipment. However, when producing PET / PETG substrates, these equipment conflict with the desired properties of PET / PETG materials, such as high flatness, thus impacting the final product quality and application range, resulting in an incomplete match. Utility Model Content

[0003] (1) Technical issues to be resolved

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a calender, which solves the technical problem that the existing floor substrate production equipment is not suitable for producing substrates with high flatness requirements, resulting in low production efficiency and low pass rate of such substrates.

[0005] (2) Technical solution

[0006] In order to achieve the above-mentioned purpose, the main technical solutions adopted by this utility model include:

[0007] An embodiment of the present utility model provides a calender, comprising a conveying mechanism and multiple sets of thickness-fixing mechanisms; the multiple sets of thickness-fixing mechanisms are arranged in parallel and at intervals, the conveying mechanism is arranged between two adjacent sets of thickness-fixing mechanisms, the multiple sets of thickness-fixing mechanisms are used to sequentially thickness-fix the substrate extruded by the extruder, and the conveying mechanism is used to convey the substrate; the thickness-fixing spacing of the multiple sets of thickness-fixing mechanisms arranged from the proximal end to the distal end of the extruder gradually decreases; the contact surface between the lower rollers in the multiple sets of thickness-fixing mechanisms and the substrate and the conveying surface of the conveying mechanism are all on the same plane.

[0008] Preferably, the thickness setting mechanism includes a mounting frame, a lifting assembly, an upper roller and a lower roller; the upper roller and the lower roller are arranged up and down on the mounting frame, and the upper roller and the lower roller can rotate along their own axes relative to the mounting frame; the fixed end of the lifting assembly is connected to the mounting frame, and the movable end of the lifting assembly is connected to the upper roller to drive the upper roller to move up and down, thereby changing the thickness setting distance between the upper roller and the lower roller.

[0009] Preferably, the lower roller in the thickness determination mechanism at the proximal end of the extruder is provided with a shading.

[0010] Preferably, the distance between the input end of the conveying mechanism and the thickness setting point of the thickness setting mechanism upstream thereof is less than 10 cm; and the distance between the output end of the conveying mechanism and the thickness setting point of the thickness setting mechanism downstream thereof is less than 10 cm.

[0011] Preferably, the conveying mechanism is a synchronous belt linear module; the synchronous belt linear module comprises a belt, a driving wheel, a driven wheel and a driving motor; the output end of the driving motor is connected with the driving wheel to drive the driving wheel to rotate; the belt is sleeved on the driving wheel and the driven wheel and is in rolling connection with the driving wheel and the driven wheel.

[0012] Preferably, the conveying mechanism comprises a connecting frame, a driving member and a plurality of conveying rollers; the plurality of conveying rollers are arranged side by side and spaced apart on the connecting frame and are in rotary connection with the connecting frame; and the driving member drives the conveying rollers to rotate.

[0013] Preferably, the distance between the centers of two adjacent conveying rollers is less than 10 cm.

[0014] Preferably, the distance between the input end of the conveying mechanism and the output end of the conveying mechanism is 100-150 cm.

[0015] Preferably, three sets of thickness setting mechanisms are included to form a six-roller calender.

[0016] Preferably, the calender is used for PET / PETG substrates.

[0017] (III) Beneficial Effects

[0018] The calender has the following beneficial effects:

[0019] The calender comprises a conveying mechanism and a plurality of sets of thickness setting mechanisms; the plurality of sets of thickness setting mechanisms are arranged side by side and spaced apart; the conveying mechanism is arranged between two adjacent sets of thickness setting mechanisms; the plurality of sets of thickness setting mechanisms are used for sequentially setting the thickness of the substrate extruded by the extruder; and the conveying mechanism is used for conveying the substrate. Since the thickness setting intervals in the plurality of sets of thickness setting mechanisms arranged from the proximal end to the distal end of the extruder gradually decrease, the stress deformation of the substrate is reduced through the multi-section calendering and setting of the plurality of sets of thickness setting mechanisms, and the stability of product forming is improved. Moreover, the contact surface of the lower roller in the plurality of sets of thickness setting mechanisms and the conveying surface of the conveying mechanism are on the same plane, the PET / PETG substrate is not subjected to bending stress, can be smoothly calendered and formed, the demand for high flatness required for the production of PET / PETG substrates can be met, and the production qualification rate and production efficiency of PET / PETG substrates are improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 Fig. 1 is a front view of the calender of the utility model;

[0021] Figure 2 Fig. 2 is a sectional view of the calender of the utility model; Figure 1a structure diagram of a conveying mechanism in the thickness setting mechanism;

[0022] Figure 3 for Figure 1 a structure diagram of a thickness setting mechanism in the thickness setting mechanism.

[0023]

Explanation of reference numerals

[0024] 1, conveying mechanism; 11, connecting frame; 12, driving member; 13, conveying roller;

[0025] 2, thickness setting mechanism; 21, mounting frame; 22, lifting assembly; 23, upper roller; 24, lower roller;

[0026] 3, walking frame;

[0027] 4, extruder. DETAILED DESCRIPTION

[0028] In order to better explain the present application, so as to facilitate understanding, the present application is described in detail below by specific embodiments in combination with the drawings.

[0029] As Figure 1 shown, the present embodiment provides a calender, the calender comprising a conveying mechanism 1, a plurality of thickness setting mechanisms 2 and a walking frame 3, the conveying mechanism 1 and the plurality of thickness setting mechanisms 2 are both arranged on the walking frame 3. Among them, the plurality of thickness setting mechanisms 2 are arranged side by side and spaced apart, the conveying mechanism 1 is arranged between the adjacent two groups of thickness setting mechanisms 2, the plurality of thickness setting mechanisms 2 are used to sequentially set the thickness of the base material extruded by the extruder 4, and the conveying mechanism 1 is used to convey the base material. The thickness setting spacing of the plurality of thickness setting mechanisms 2 arranged from the proximal end to the distal end of the extruder 4 gradually decreases, and the contact surface of the lower roller 24 in the plurality of thickness setting mechanisms 2 and the conveying surface of the conveying mechanism 1 are all on the same plane. It should be noted that the calender is suitable for PET / PETG base material. And in the present embodiment, the walking frame 3 can be provided with a driving motor to facilitate the movement of the calender.

[0030] Since the thickness setting spacing of the plurality of thickness setting mechanisms 2 arranged from the proximal end to the distal end of the extruder 4 gradually decreases, and then the base material is subjected to multi-section calendering and setting, the stress deformation of the base material is reduced, and the stability of product forming is improved. And since the contact surface of the lower roller 24 in the plurality of thickness setting mechanisms 2 and the conveying surface of the conveying mechanism 1 are all on the same plane, the PET / PETG base material is not subjected to bending stress, and can be smoothly calendered and formed, and the demand for high flatness required for the production of PET / PETG base material can be met, thereby improving the production qualification rate and production efficiency of PET / PETG base material.

[0031] As Figure 3As shown, the thickness calibration mechanism 2 includes a mounting frame 21, a lifting assembly 22, an upper roller 23, and a lower roller 24. The upper roller 23 and the lower roller 24 are arranged vertically on the mounting frame 21, and each of the upper roller 23 and the lower roller 24 can rotate along their own axes relative to the mounting frame 21. The fixed end of the lifting assembly 22 is connected to the mounting frame 21, and the movable end of the lifting assembly 22 is connected to the upper roller 23 to drive the upper roller 23 to move up and down, thereby changing the thickness calibration distance between the upper roller 23 and the lower roller 24. The distance between the lowest point of the upper roller 23 and the highest point of the lower roller 24 is the thickness calibration distance. In this embodiment, three sets of thickness calibration mechanisms 2 are preferably used to form a six-roll calender. Six rollers refers to the number of upper rollers 23 and lower rollers 24 in the three sets of thickness calibration mechanisms 2. Of course, multiple sets of thickness calibration mechanisms 2, such as two or four, can be selected according to actual conditions.

[0032] In this embodiment, the lower roller 24 in the thickness setting mechanism 2 at the proximal end of the extruder 4 is provided with a shading, and the upper rollers 23 and lower rollers 24 in the other two sets of thickness setting mechanisms 2 are mirror rollers.

[0033] Since the PET / PETG substrate output from the extruder 4 has good fluidity, in order to avoid the PET / PETG substrate sinking due to excessive distance between the conveying mechanism and the thickness setting mechanism 2, the distance between the input end of the conveying mechanism and the thickness setting point of its upstream thickness setting mechanism 2 is less than 10 cm, and the distance between the output end of the conveying mechanism and the thickness setting point of its downstream thickness setting mechanism 2 is less than 10 cm.

[0034] To ensure the straightness of the PET / PETG substrate during the calendering process, the conveying mechanism is a synchronous belt linear module, which includes a belt, a driving pulley, a driven pulley and a drive motor. The upper side of the belt is the conveying surface. The output end of the drive motor is connected to the driving pulley to drive the driving pulley to rotate. The belt is sleeved on the driving pulley and the driven pulley, and the belt is rollingly connected to the driving pulley and the driven pulley.

[0035] Of course, if Figure 2 As shown, the conveying mechanism 1 may also include a connecting frame 11, a driving member 12, and multiple conveying rollers 13. The multiple conveying rollers 13 are arranged side by side and spaced apart on the connecting frame 11. The multiple conveying rollers 13 are rotatably connected to the connecting frame 11, and the driving member 12 drives the conveying rollers 13 to rotate. In this case, the contact surface between the conveying rollers 13 and the substrate serves as the conveying surface. To further prevent the substrate from sinking in a large gap, the center-to-center distance between two adjacent conveying rollers 13 is less than 10 cm.

[0036] In this embodiment, the distance between the input end and the output end of the conveying mechanism 1 is preferably 100-150 cm. On the one hand, it is convenient for cooling the substrate such as PET / PETG, and on the other hand, it is convenient for personnel to stand on one side of the conveying mechanism 1 to operate.

[0037] Working process of calender:

[0038] The dried PET or PETG particles are fed into the extruder 4, and the temperature of each zone of the screw of the extruder 4 is strictly controlled to ensure that the material is uniformly extruded from the die opening of the extruder 4 in a suitable molten state. The upper roller 23 and the lower roller 24 of the first set of thickness setting mechanisms 2 adjust the distance between the two rollers through the lifting assembly 22 thereon, thereby adjusting the thickness of the substrate, completing the first thickness setting, and since the upper roller 23 and the lower roller 24 of the first set of thickness setting mechanisms 2 are provided with a bottom pattern, the substrate is provided with a pattern. After passing through the conveying mechanism, it enters the second set of thickness setting mechanisms 2, and the distance between the two rollers is adjusted through the lifting assembly 22 thereon, thereby adjusting the thickness of the substrate, completing the second thickness setting. After passing through the conveying mechanism, it enters the third set of thickness setting mechanisms 2, and the distance between the two rollers is adjusted through the lifting assembly 22 thereon, thereby adjusting the thickness of the substrate, completing the third thickness setting. The PET / PETG substrate completes crystallization over time, and after three thickness settings, it begins to enter the cooling section process.

[0039] In the description of the present application, it should be understood that the terms "first", "second" are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0040] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] In the present application, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature is "above", "above" and "above" the second feature, which can be directly above or obliquely above the first feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature is "below", "below" and "below" the second feature, which can be directly below or obliquely below the first feature, or only indicates that the horizontal height of the first feature is lower than that of the second feature.

[0042] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0043] Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and the person skilled in the art can modify, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A calender characterized by, The calender comprises a conveying mechanism (1) and multiple sets of thickness setting mechanisms (2); The multiple sets of thickness setting mechanisms (2) are arranged in parallel and at intervals, and the conveying mechanism (1) is arranged between two adjacent sets of thickness setting mechanisms (2); the multiple sets of thickness setting mechanisms (2) are used for sequentially setting the thickness of the base material extruded by an extruder (4), and the conveying mechanism (1) is used for conveying the base material; The thickness setting intervals of the multiple sets of thickness setting mechanisms (2) gradually decrease from the proximal end to the distal end of the extruder (4); The contact surface of the lower roller (24) in the multiple sets of thickness setting mechanisms (2) and the conveying surface of the conveying mechanism (1) are in the same plane.

2. The calender of claim 1, wherein: Each of the thickness setting mechanisms (2) comprises a mounting frame (21), a lifting assembly (22), an upper roller (23) and the lower roller (24); The upper roller (23) and the lower roller (24) are arranged on the mounting frame (21) in a vertical manner, and the upper roller (23) and the lower roller (24) are capable of rotating along their own axes relative to the mounting frame (21); The fixed end of the lifting assembly (22) is connected with the mounting frame (21), and the moving end of the lifting assembly (22) is connected with the upper roller (23) to drive the upper roller (23) to perform lifting movement, thereby changing the thickness setting interval between the upper roller (23) and the lower roller (24).

3. The calender of claim 1, wherein: The lower roller (24) in the thickness setting mechanism (2) at the proximal end of the extruder (4) is provided with a bottom pattern.

4. The calender of claim 1, wherein: The interval between the input end of the conveying mechanism (1) and the thickness setting point of the thickness setting mechanism (2) upstream of the conveying mechanism (1) is less than 10 cm; The interval between the output end of the conveying mechanism (1) and the thickness setting point of the thickness setting mechanism (2) downstream of the conveying mechanism (1) is less than 10 cm.

5. The calender of claim 4, wherein: The conveying mechanism (1) is a synchronous belt linear module; The synchronous belt linear module comprises a belt, a driving wheel, a driven wheel and a driving motor; The output end of the driving motor is connected with the driving wheel to drive the driving wheel to rotate, the belt is sleeved on the driving wheel and the driven wheel, and is in rolling connection with the driving wheel and the driven wheel.

6. The calender of claim 4, wherein: The conveying mechanism (1) comprises a connecting frame (11), a driving member (12) and multiple conveying rollers (13); The multiple conveying rollers (13) are arranged in parallel and at intervals on the connecting frame (11), and the multiple conveying rollers (13) are in rotating connection with the connecting frame (11); The driving member (12) drives the conveying rollers (13) to rotate.

7. The calender of claim 6, wherein: The interval between the centers of two adjacent conveying rollers (13) is less than 10 cm.

8. The calender of claim 1, wherein: The distance between the input end of the conveying mechanism (1) and the output end of the conveying mechanism (1) is 100-150 cm.

9. The calender according to claim 1, characterized in that: it comprises 3 groups of said thickness control mechanisms (2), forming a six-roll calender.

10. The calender according to claim 1, characterized in that: for PET / PETG substrates.

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