CN212666761U

CN212666761U - Substrate preheating device of online composite sheet

Info

Publication number: CN212666761U
Application number: CN202021245667.5U
Authority: CN
Inventors: 许国平; 钱瑛
Original assignee: Changzhou Xindali Plastic Machinery Co ltd
Current assignee: Changzhou Xindali Plastic Machinery Co ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-03-09
Anticipated expiration: 2030-06-30

Abstract

The utility model discloses a substrate preheating device of an online composite sheet, which relates to the technical field of composite sheet production equipment and comprises a preheating frame, wherein the preheating frame is positioned between a unwinding roller and a calendering device; the preheating frame comprises a supporting platform and a preheating plate positioned above the supporting platform, and the base material is arranged between the supporting platform and the preheating plate in a penetrating mode. A tensioning adjusting frame is also arranged between the preheating frame and the unwinding roller and comprises a frame body, an adjusting roller and two supporting rollers, wherein the adjusting roller and the two supporting rollers are arranged in parallel; a plurality of heat source grooves are formed in one ends of the adjusting roller and the supporting roller, heat sources are introduced into the heat source grooves, and plugging pieces are arranged at the notches of the heat source grooves. The utility model provides a substrate great with the difference in temperature on former bed, lead to the relatively poor problem of hot pressing laminating effect easily when hot briquetting, have and preheat the substrate before former bed and substrate hot pressing, the temperature difference of former bed and substrate when reducing the hot pressing laminating to promote the effect of the hot pressing laminating degree of compound sheet.

Description

Substrate preheating device of online composite sheet

Technical Field

The utility model belongs to the technical field of compound sheet production facility technique and specifically relates to a substrate preheating device of online compound sheet is related to.

Background

The plastic film coating machine mainly adopts a tape casting extrusion process, and raw materials such as PE, EVA, TPR or PP and the like are heated, extruded, compounded with a base material, calendered, cooled and rolled to form complete equipment. The main applications are as follows: the composite material is used for single-layer or multi-layer compounding of various base materials such as non-woven fabrics, paper, woven cloth, grids, foams, pearl cotton, aluminum foils, car roof cloth, carpets, plastic color films and the like.

The plastic laminating machine comprises an extrusion die head and a calendering device positioned below the extrusion die head, wherein the extrusion die head is used for extruding a raw material layer. The calendering device comprises a plurality of calendering rollers arranged in parallel, two unwinding rollers are respectively arranged at two ends of the calendering device in the conveying direction, and the base material is wound on the unwinding rollers in the circumferential direction.

The layer structure of the existing composite sheet comprises a PP raw material layer and non-woven fabric layers positioned on two sides of the PP raw material layer. When the composite sheet is formed, referring to fig. 1, the PP raw material layer 13 is extruded through the extrusion die head 12 of the plastic film coating machine and is extruded towards the gap between the calendering rollers 11 which are opposite under the extrusion die head 12, meanwhile, the two unwinding rollers 14 continuously unwind the non-woven fabric substrate 15, and the non-woven fabric substrate 15 and the PP raw material layer 13 pass through the gap between the same pair of calendering rollers 11 and are positioned at two sides of the PP raw material layer 13 in the thickness direction. Since the freshly extruded PP material layer 13 also has a high temperature of 200 to 300 ℃, calendering by the calender rolls 11 can be preferably heat-set with the nonwoven fabric substrate 15. The thermally synthesized composite sheet may be cooled through the gap between the other calender rolls 11 and conveyed out of the calender apparatus 1 to be wound up.

The above prior art solutions have the following drawbacks: the hot press molding of the composite sheet mainly depends on the residual heat of the PP raw material layer and the extrusion of the calendering roller, so that the PP raw material layer and the non-woven fabric substrate are hot pressed and molded into a whole. Present non-woven fabrics substrate or other substrate that are used for compounding are generally direct and raw materials layer hot pressing such as PP, because the substrate is in normal atmospheric temperature state, for the temperature of raw materials layer, the difference in temperature between them is great, lead to the relatively poor hidden danger of hot pressing laminating effect easily when hot briquetting.

SUMMERY OF THE UTILITY MODEL

According to the not enough of prior art existence, the utility model aims at providing a substrate preheating device of online compound sheet has and preheats the substrate before former bed and substrate hot pressing, the temperature difference of former bed and substrate when reducing the hot pressing laminating to promote the effect of the hot pressing laminating degree of compound sheet.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the substrate preheating device for the online composite sheet comprises a preheating frame, wherein the preheating frame is positioned between an unwinding roller and a calendering device;

the preheating frame comprises a supporting platform and a preheating plate positioned above the supporting platform, and the base material is arranged between the supporting platform and the preheating plate in a penetrating mode.

Through adopting above-mentioned technical scheme, utilize to preheat the frame and preheat the substrate before raw materials layer and substrate hot pressing, the backup pad sets up relatively with preheating the board and forms comparatively inclosed passageway for the substrate that passes between the two can be better receive preheating, have the temperature difference of raw materials layer and substrate when reducing the hot-pressing laminating, thereby promote the effect of the hot-pressing laminating degree of compound sheet.

The present invention may be further configured in a preferred embodiment as: and heat source tubes are uniformly distributed in the preheating plate, and heat source media are arranged in the heat source tubes.

By adopting the technical scheme, the heat source pipe can be convenient for introducing the heat source medium, and can introduce different types of heat source medium according to the different temperature resistance values of the base materials which pass through and the different temperatures of the raw material layers extruded by the plastic film coating machine, so that different types of base materials can be well preheated, and the requirement that the surface temperature of the base materials after preheating and the temperature difference of the raw material layers extruded by the plastic film coating machine are smaller is met.

The present invention may be further configured in a preferred embodiment as: the heat source medium adopts an electric heating wire.

Through adopting above-mentioned technical scheme, thereby can be through the electric current size of regulation voltage control input, and then reach the heating temperature who adjusts electric heating wire, temperature regulation is comparatively convenient, the preheating of the different substrates of adaptation that can be better for the surface temperature of substrate after preheating is less with the temperature difference of the raw materials layer that the plastics drench the membrane machine and extrude.

The present invention may be further configured in a preferred embodiment as: the supporting platform is arranged in parallel with the preheating plate, and the opposite side walls of the supporting platform and the preheating plate are rotatably connected with a feeding roller and a discharging roller;

the feeding roller is located at the feeding end of the preheating frame, and the discharging roller is located at the discharging end of the preheating frame.

Through adopting above-mentioned technical scheme, feed roll and discharge roller are used for preventing substrate direct contact supporting platform and preheating plate to reduce the substrate by the hidden danger of fish tail, cut open, be infected with the foreign matter and be burnt.

The present invention may be further configured in a preferred embodiment as: a tensioning adjusting frame is further arranged between the preheating frame and the unwinding roller, the tensioning adjusting frame comprises a frame body, an adjusting roller and two supporting rollers, the adjusting roller and the two supporting rollers are arranged in parallel, and the adjusting roller and the supporting rollers are arranged at intervals;

the backing roll with the support body rotates to be connected, and the substrate passes the duplex winding from the first backing roll top and locates the regulating roller below, and pass and penetrate from the second backing roll top preheat the frame setting.

Through adopting above-mentioned technical scheme, the tensioning alignment jig can be according to the tensioning of the speed automatically regulated base material of calendering device calendering. The support body is used for rotating and connecting the supporting roller, and the adjusting roller is suspended and fixed through a base material winding mode in the technical scheme. When the unwinding speed at the unwinding roller is not changed and the calendering and heat sealing speed is low, the adjusting roller moves downwards due to the dead weight of the adjusting roller, so that the base material is tensioned. When the unreeling speed of the unreeling roller is not changed and the calendering and heat sealing speed is high, the base material takes the supporting roller as a supporting point to drive the adjusting roller to move upwards, so that the base material is tensioned.

The present invention may be further configured in a preferred embodiment as: the support body is provided with support rods at two axial ends of the adjusting roller, a sliding sleeve is sleeved on the support rods and corresponds to the end connection of the adjusting roller.

Through adopting above-mentioned technical scheme, the bracing piece can make the adjusting roller directional the lift that slides with the cover that slides to can promote the stability that the adjusting roller adjusted the tensioning of substrate.

The present invention may be further configured in a preferred embodiment as: a plurality of heat source grooves are formed in one ends of the adjusting roller and the supporting roller, and the heat source grooves extend along the axial direction of the adjusting roller and the axial direction of the supporting roller;

a heat source is introduced into the heat source groove, and a plugging piece is arranged at the notch of the heat source groove.

Through adopting above-mentioned technical scheme, the heat source that lets in through the heat source inslot on dancer rolls and the backing roll can be in the supplementary substrate of preheating before preheating the frame, and the shutoff piece is used for preventing the heat source and flows out for the substrate can be faster reach the temperature that will preheat after getting into preheating the frame, thereby promotes preheating efficiency.

The present invention may be further configured in a preferred embodiment as: the two opposite sides of the supporting platform are provided with vertically arranged ball screws, and sliding blocks of the ball screws are connected with the preheating plate.

Through adopting above-mentioned technical scheme, utilize ball to adjust the height of preheating plate, adjust the distance between preheating plate and the supporting platform then to the substrate of being convenient for different thickness can pass and preheat the frame and be preheated.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the preheating frame is arranged, so that the base material can be preheated before the raw material layer and the base material are hot-pressed, the temperature difference between the raw material layer and the base material during hot-pressing fitting is reduced, and the effect of improving the hot-pressing fitting degree of the composite sheet is achieved;

2. the tension adjusting frame is arranged, so that the tension of the base material can be automatically adjusted according to the rolling heat sealing speed of the rolling device, the base material is kept flat all the time during rolling, and the overall quality of the composite sheet is improved;

3. through the setting of backing roll, dancer rools, heat source groove and shutoff piece, can play the supplementary substrate of preheating in the tensioning substrate to shorten the preheating time of substrate in preheating the frame, and then promote the effect of preheating efficiency of substrate.

Drawings

Fig. 1 is a schematic structural diagram of a composite sheet material thermal compression bonding in the prior art.

Fig. 2 is a schematic view of the overall structure of the substrate preheating device of the present invention.

Fig. 3 is a schematic view of the overall structure of the tension adjusting bracket in the present embodiment.

Fig. 4 is a schematic view of the overall structure of the preheating rack in this embodiment.

In the figure, 1, a rolling device; 11. a calender roll; 12. an extrusion die head; 13. a raw material layer; 14. unwinding rollers; 15. a substrate; 2. a preheating frame; 21. a support platform; 22. a ball screw; 23. preheating a plate; 24. a heat source tube; 25. an electric heating wire; 26. a feed roll; 27. a discharging roller; 3. tensioning the adjusting bracket; 31. a frame body; 32. a regulating roller; 33. a support roller; 34. a support bar; 35. a sliding sleeve; 36. a heat source tank; 37. a closure.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b):

referring to fig. 2, the utility model discloses a substrate preheating device of online compound sheet, including unreeling roller 14, tensioning alignment jig 3, preheating frame 2 and calendering device 1 that set gradually. The unwinding roller 14 is wound with a substrate 15, and the unwinding roller 14 automatically unwinds the substrate 15 through a motor. The base material 15 sequentially passes through the tensioning adjusting frame 3 and the preheating frame 2, and finally is hot-pressed and attached to the raw material layer 13 extruded by the extrusion die head 12 of the plastic film coating machine at the position of the calendering device 1 through a gap between the two calendering rollers 11. Because the substrate 15 preheats through preheating frame 2, the difference in temperature with raw material layer 13 is less when the hot pressing laminating, can make the hot pressing laminating degree of this compound sheet better.

Referring to fig. 3, the tensioning adjusting bracket 3 includes a bracket body 31, two supporting rollers 33, and an adjusting roller 32 located between the supporting rollers 33, the supporting rollers 33 and the adjusting roller 32 are both disposed in parallel with the unwinding roller 14, and both ends of the supporting rollers 33 are rotatably connected to the bracket body 31. The support rod 34 that is located the axial both ends of adjusting roller 32 and is connected with vertical setting on the support body 31, and the cover is equipped with the cover 35 that slides on the bracing rod 34, and the cover 35 that slides passes through bolted connection with the tip of adjusting roller 32 fixedly. The substrate 15 passes over the first support roller 33 and is wound under the regulating roller 32, and then passes over the second support roller 33 and passes into the preheating frame 2, so that the regulating roller 32 is suspended and fixed. The tension of the base material 15 can be automatically adjusted by lifting the adjusting roller 32 along the axial direction of the support rod 34 through the sliding sleeve 35 by the self weight of the adjusting roller 32 and the pulling of the base material 15. The tensioning of substrate 15 can keep unreeling the unchangeable condition of speed, better adaptation calendering device 1's calendering speed.

Referring to fig. 3, in order to further improve the heating efficiency of the substrate 15 in the preheating frame 2, in this embodiment, a plurality of heat source grooves 36 are uniformly distributed at one end of the supporting roller 33 and one end of the adjusting roller 32, and the heat source grooves 36 are respectively arranged along the axial direction of the supporting roller 33 and the axial direction of the adjusting roller 32. Hot oil at 150 ℃ or hot water at 100 ℃ or other heat sources are introduced into the heat source groove 36, and a plugging piece 37 is arranged at the notch of the heat source groove 36 and used for plugging the heat source groove 36. In this embodiment, the sealing member 37 is a sealing plug, and one side of the sealing plug extending into the heat source groove 36 is in threaded connection with the heat source groove 36. The heat source needs to be replaced once for 6 hours so that the backup roller 33 and the dancer roller 32 maintain a hot preheating temperature, so that the substrate 15 can be preheated in advance while the substrate 15 is tensioned.

Referring to fig. 4, the preheating rack 2 includes a supporting platform 21, symmetrically disposed ball screws 22, and a preheating plate 23, the supporting platform 21 is disposed on the ground, and the ball screws 22 are respectively disposed on two sides of the supporting platform 21 in the conveying direction and are vertically disposed. The slide block of the ball screw 22 is connected with the side wall of the preheating plate 23, the preheating plate 23 is located above the supporting platform 21 and is parallel to the supporting platform 21, and the substrate 15 passes through between the supporting platform 21 and the preheating plate 23. The preheating plate 23 is internally and uniformly provided with heat source tubes 24, heat source media are arranged in the heat source tubes 24, and the heat source media adopt electric heating wires 25. The preheating plate 23 is heated by the electric heating wire 25 to preheat the substrate 15, thereby reducing the temperature difference between the substrate 15 and the raw material layer 13.

The feed end of preheating frame 2 rotates and is connected with a pair of feed roller 26, and the discharge end of preheating frame 2 rotates and is connected with a pair of delivery roll 27, and feed roller 26 and delivery roll 27 are located supporting platform 21 and preheating plate 23's relative lateral wall respectively for prevent substrate 15 direct contact supporting platform 21 and preheating plate 23, thereby reduce the hidden danger of substrate 15 surface damage.

The implementation principle of the above embodiment is as follows: first, a heat source is injected into the support roller 33 and the adjustment roller 32, and is blocked by the blocking piece 37. Subsequently, the unwinding roll 14 is automatically unwound, and the operator pulls the end of the substrate 15 and passes the substrate 15 sequentially above the first support roll 33, below the adjusting roll 32, above the second support roll 33, between the two feed rolls 26, between the preheating plate 23 and the support platform 21, between the discharge roll 27, and finally between the two calendering rolls 11 of the calendering device 1, and continues the pulling through the calendering rolls 11 rotating relatively.

And then, simultaneously starting a heating power supply of the plastic film coating machine and the preheating plate 23, and carrying out hot pressing on the raw material layer 13 extruded by the extrusion die head 12 above the calendering roller 11 and the substrate 15 under the driving of the calendering roller 11 which rotates relatively. The hot-pressed composite sheet is drawn out of the calendering device 1 and is cooled and rolled.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a substrate preheating device of online compound sheet which characterized in that: the device comprises a preheating frame (2), wherein the preheating frame (2) is positioned between a unreeling roller (14) and a calendering device (1);

the preheating frame (2) comprises a supporting platform (21) and a preheating plate (23) positioned above the supporting platform (21), and the base material (15) is arranged between the supporting platform (21) and the preheating plate (23) in a penetrating mode.

2. The apparatus for preheating a base material of an in-line composite sheet according to claim 1, wherein: the preheating plate (23) is internally and uniformly provided with heat source tubes (24), and heat source media are arranged in the heat source tubes (24).

3. The apparatus for preheating a base material of an in-line composite sheet according to claim 2, wherein: the heat source medium adopts an electric heating wire (25).

4. The apparatus for preheating a base material of an in-line composite sheet according to claim 1, wherein: the supporting platform (21) and the preheating plate (23) are arranged in parallel, and the opposite side walls of the supporting platform (21) and the preheating plate (23) are respectively and rotatably connected with a feeding roller (26) and a discharging roller (27);

the feeding roller (26) is located at the feeding end of the preheating frame (2), and the discharging roller (27) is located at the discharging end of the preheating frame (2).

5. The apparatus for preheating a base material of an in-line composite sheet according to claim 1, wherein: a tensioning adjusting frame (3) is further arranged between the preheating frame (2) and the unwinding roller (14), the tensioning adjusting frame (3) comprises a frame body (31), an adjusting roller (32) and two supporting rollers (33), the adjusting roller (32) and the supporting rollers (33) are arranged in parallel, and the adjusting roller (32) and the supporting rollers (33) are arranged at intervals;

backing roll (33) with support body (31) are rotated and are connected, and base material (15) are first backing roll (33) top is passed and is wound and locate regulating roller (32) below, and second backing roll (33) top is passed and is penetrated preheating frame (2) setting.

6. The apparatus for preheating a base material of an in-line composite sheet according to claim 5, wherein: the support body (31) is provided with support rods (34) at two axial ends of the adjusting roller (32), a sliding sleeve (35) is sleeved on the support rods (34), and the sliding sleeve (35) corresponds to the end connection of the adjusting roller (32).

7. The apparatus for preheating a base material of an in-line composite sheet according to claim 6, wherein: a plurality of heat source grooves (36) are formed in one ends of the adjusting roller (32) and the supporting roller (33), and the heat source grooves (36) are arranged along the axial extension of the adjusting roller (32) and the supporting roller (33);

a heat source is introduced into the heat source groove (36), and a plugging piece (37) is arranged at the notch of the heat source groove (36).

8. The apparatus for preheating a base material of an in-line composite sheet according to claim 1, wherein: the two opposite sides of the supporting platform (21) are provided with vertically arranged ball screws (22), and sliding blocks of the ball screws (22) are connected with the preheating plate (23).