Traction mechanism for negative pressure foaming

Abstract

The utility model discloses a traction mechanism for negative pressure foaming, which comprises a frame, a box cover is arranged on the frame, a front flange plate connected with an outer cover of a leveling device is arranged at the front end of the box cover, and the box cover is hermetically connected with an outer box shell of a conveying frame through a rear end cover; a plurality of conveying rollers are arranged on the sides, facing the extruded sheet, of the floating roller frames in parallel, and the two floating roller frames are arranged in the box cover in a face-to-face mode and can move up and down; the two sets of driving assemblies are arranged on the top wall and the bottom wall of the box cover, and the working ends of the driving assemblies stretch into the box cover, are connected with the floating roller frame and can drive the floating roller frame to move up and down. The traction mechanism for negative pressure foaming can be conveniently integrated into a negative pressure foaming production line of an extruded sheet, and a conveying gap can be conveniently adjusted.

Description

TECHNICAL FIELD

[0001] The utility model relates to extruded sheet production technical field especially relates to a traction mechanism for negative pressure foaming. BACKGROUND

[0002] Extruded polystyrene foam board, also known as XPS extruded board, is a material formed by special process continuous extrusion foaming, the hard film formed on its surface is uniform and flat, the inside is completely closed cell foaming, continuous and uniform, and it is in honeycomb structure, so it has the characteristics of high compression resistance, light weight, non-water absorption, air impermeability, wear resistance and non-degradation. The production process of extruded board generally includes the following aspects: general grade polystyrene and nucleating agent, combustion improver and the like are fed into the extruder through the feeder, and the foaming agent is added to make the foaming agent and other raw materials fully mixed and cooled, and then extruded through the mold, and then the plate is shaped to the required thickness and width through the setting machine, and finally the traction machine outputs backward and cuts into shape.

[0003] At present, in order to improve the utilization rate of raw materials and reduce the density of extruded board, a negative pressure foaming process gradually appears, that is, the die extrusion outlet extrudes the foaming material in a negative pressure environment, which is more sufficient than the common environment foaming, and increases the thickness of the extruded board. For example, the utility model patent with publication number CN200995467Y discloses a kind of extruded polystyrene insulation board transverse negative pressure foaming device. The extruder and the mold are connected by flange plate, in turn for leveling device, pull machine, conveying way, mold, leveling device, pull machine, conveying way are installed in transverse sealing box;The transverse sealing box is provided with an insulation board outlet at the end, and a baffle is installed on the insulation board outlet, the baffle is closely attached to the edge of the insulation board outlet, and the baffle is in dynamic sealing contact with the insulation board outlet;At least one hole is provided on the wall of the transverse sealing box, and the hole is sealed connected with the vacuumizing device. Although the utility model makes the production process of polystyrene insulation board foaming forming in a negative pressure state, it can make the polystyrene insulation board foaming more sufficient, reduce the density of the insulation board, reduce the raw material consumption, and also reduce the production cost. However, the pull machine for pulling the extruded board is placed in the transverse sealing box in the utility model, which leads to a large volume of the transverse sealing box. In order to ensure that the strength of the sealing box body meets the requirements, the side wall of the box body must be thickened and treated with stiffener plate, which leads to a thick equipment. At the same time, it is not convenient to adjust the conveying gap between the upper roller shaft group and the lower roller shaft group.

[0004] Therefore, a traction mechanism for negative pressure foaming is needed to overcome the above-mentioned defects. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a kind of traction mechanism for negative pressure foaming, it is convenient to integrate into the negative pressure foaming production line of extruded board, it can be adjusted conveniently conveying gap.

[0006] To solve the above technical problems, the utility model discloses the following technical scheme:

[0007] The utility model discloses a traction mechanism for negative pressure foaming, comprising:

[0008] Rack, be provided with the box cover on the rack, the front flange plate of connecting the levelling device outer cover is set to the box cover front end, the outer box casing of the conveying frame is sealedly connected to the box cover through the rear end cover,

[0009] Floating roller frame, a plurality of conveying rollers are arranged in parallel on the side of the floating roller frame towards the extruded plate, two floating roller frames are oppositely arranged in the box cover and can move up and down,

[0010] Driving assembly, two driving assemblies are arranged on the top wall and the bottom wall of the box cover, the working end of the driving assembly is inserted into the box cover and is connected with the floating roller frame and can drive the floating roller frame to move up and down.

[0011] Further, the driving assembly comprises an elevator, and four elevators are respectively located at four corner positions of the top wall or the bottom wall of the box cover.

[0012] Further, the elevator specifically adopts a screw elevator, and two adjacent screw elevators are connected by using a synchronous shaft, and the screw of the screw elevator is sealed by using a circular tube.

[0013] Further, the driving assembly on the top wall of the box cover further comprises a speed reducer one, and the speed reducer one is installed on the top wall of the box cover and drives the elevator by using a chain wheel and a chain.

[0014] Further, the driving assembly on the bottom wall of the box cover further comprises a hand wheel, and the hand wheel is installed on the input shaft end of the elevator.

[0015] Further, an air extraction pipe joint and a emptying pipe joint are installed on the side wall of the box cover, the box cover is connected with a negative pressure device by using the air extraction pipe joint, and valves are installed on the air extraction pipe joint and the emptying pipe joint.

[0016] Further, a speed reducer two for driving the conveying roller to rotate is installed on the floating roller frame, and a buckle cover for allowing the speed reducer two to be arranged is sealingly buckled on the top wall and the bottom wall of the box cover.

[0017] Further, a window one is arranged on each side wall of the box cover, and a window two is arranged on the side wall of the rear end cover.

[0018] Compared with the prior art, the utility model has the beneficial technical effects:

[0019] The utility model discloses a traction mechanism for negative pressure foaming, through the box cover of the sealing floating roller frame and the conveying roller of setting up on the frame, relative to the sealing of whole traction equipment in prior art, has reduced the sealing volume, has reduced the requirement to the strength of box cover board, is not easy to appear leakage, through the setting of flange plate and rear end cover, it is convenient to seal and connect together with other equipment, through the drive assembly of setting on the top wall and bottom wall of box cover respectively, can control the drive assembly in external environment, it is convenient to control the conveying gap flexibly.

[0020] In addition, by setting four elevators in a group at four corner positions of the top wall or the bottom wall of the box cover, when synchronously operating, the four corner positions of the floating roller frame can be synchronously lifted and lowered, so that the horizontal position of the floating roller frame is kept from tilting and yawing during the lifting and lowering process; by using a circular tube seal around the screw rod of the screw rod elevator, leakage of negative pressure at the installation position of the screw rod elevator can be avoided. By installing the reduction motor on the top wall of the box cover to drive the elevator, the operator can avoid climbing operation, and can directly control the man-machine interface of the equipment; by adopting a hand wheel for the drive assembly on the bottom wall of the box cover, the operator can manually adjust the height position of the floating roller frame and the conveying roller below. By setting the air extraction pipe joint and the emptying pipe joint on the side wall of the box cover, the central position of the entire negative pressure production line can be extracted to vacuum, and the central position can be emptied and restored. The pipe joints are symmetrically arranged, so that quick response can be achieved. By setting the window one and the window two on the two side walls of the box cover and the rear end cover, the shape of the extruded plate during conveying can be observed, and the production status of the extruded plate can be understood in time. BRIEF DESCRIPTION OF DRAWINGS

[0021] The utility model will be further described in connection with the drawings.

[0022] Figure 1 It is the front view structure schematic diagram of the utility model traction mechanism for negative pressure foaming;

[0023] Figure 2 It is the left view structure schematic diagram of the utility model traction mechanism for negative pressure foaming;

[0024] Figure 3 It is the plan view structure schematic diagram of the utility model traction mechanism for negative pressure foaming;

[0025] Figure 4 It is the bottom view structure schematic diagram of the utility model traction mechanism for negative pressure foaming.

[0026] Explanation of reference signs: 1, rack; 101, bottom leg; 2, box cover; 201, front flange plate; 202, buckle cover; 203, window one; 3, rear end cover; 301, window two; 4, floating roller frame; 5, conveying roller; 6, elevator; 7, speed reducer motor one; 8, speed reducer motor two; 9, hand wheel; 10, air exhaust pipe joint; 11, emptying pipe joint. DETAILED DESCRIPTION

[0027] The core of the utility model is to provide a traction mechanism for negative pressure foaming, which is convenient to integrate into the negative pressure foaming production line of the extruded plate and can conveniently adjust the conveying gap.

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model. The following specific embodiments are described with reference to the drawings in the description, and the descriptions of up, down, left and right are relative to the drawings in the description and cannot be understood as limiting the utility model.

[0029] Reference drawings, Figure 1 It is a front view structural schematic diagram of the traction mechanism for negative pressure foaming of the utility model; Figure 2 It is a left view structural schematic diagram of the traction mechanism for negative pressure foaming of the utility model; Figure 3 It is a top view structural schematic diagram of the traction mechanism for negative pressure foaming of the utility model; Figure 4 It is a bottom view structural schematic diagram of the traction mechanism for negative pressure foaming of the utility model.

[0030] In a specific embodiment, as Figures 1-4 shown, a traction mechanism for negative pressure foaming comprises:

[0031] The rack 1 is a frame structure formed by welding a section steel, four bottom legs 101 are integrally welded at the bottom of the rack 1, and the bottom legs 101 are used for installing equipment. The rack 1 is provided with a box cover 2, the front end of the box cover 2 is provided with a front flange plate 201 connected with an outer cover of a leveling device for extruded plate production, the box cover 2 is sealingly connected with an outer box shell of a conveying frame through a rear end cover 3, and the rear end cover 3 is sealingly installed on a square rear end port of the box cover 2.

[0032] The floating roller frame 4 is provided with a plurality of conveying rollers 5 parallel to the side of the extruded plate, the axial line direction of the conveying rollers 5 is perpendicular to the conveying direction of the extruded plate, and the rotating conveying rollers 5 convey the extruded plate rearward. Two floating roller frames 4 are oppositely arranged in the box cover 2 and can move up and down.

[0033] The driving assembly is arranged on the top wall and the bottom wall of the box cover 2, the working end of the driving assembly is sealed into the box cover 2 and connected with the floating roller frame 4, and the driving assembly can drive the floating roller frame 4 to move up and down.

[0034] Compared with the prior art of sealing the whole traction device, the box cover 2 arranged on the rack 1 seals the floating roller frame 4 and the conveying roller 5, the sealing volume is reduced, the requirement for the strength of the plate of the box cover 2 is reduced, and leakage is not prone to occur; the flange plate 201 and the rear end cover 3 are arranged to facilitate sealing connection with other devices; the driving assembly is arranged on the top wall and the bottom wall of the box cover 2, the driving assembly can be controlled in the external environment, and the conveying gap can be flexibly controlled.

[0035] In a specific embodiment of the utility model, as shown in Figure 3 and Figure 4 The driving assembly comprises a hoist 6, and four hoists 6 are respectively located at four corner positions of the top wall or the bottom wall of the box cover 2.

[0036] Specifically, as shown in Figures 1-4 The hoist 6 specifically adopts a screw hoist, and adjacent two screw hoists are connected by using a synchronous shaft, the screw of the screw hoist is vertically arranged, and a round pipe is used for sealing the periphery of the screw of the screw hoist, that is, the outer end of the round pipe is sealed.

[0037] Obviously, the hoist 6 can also be replaced by a pneumatic cylinder or a hydraulic cylinder, and the simple replacement mode falls within the protection scope of the utility model.

[0038] By arranging four hoists 6 in one group at four corner positions of the top wall or the bottom wall of the box cover 2, when the hoists 6 are synchronously operated, the four corner positions of the floating roller frame 4 can be synchronously lifted and lowered, so that the horizontal position of the floating roller frame 4 is kept from being inclined and deflected during lifting and lowering; by using a round pipe for sealing the periphery of the screw of the screw hoist, leakage of negative pressure at the installation position of the screw hoist can be avoided.

[0039] In a specific embodiment of the utility model, as shown in Figures 1-3 The driving assembly on the top wall of the box cover 2 further comprises a speed reducer one 7, the speed reducer one 7 is installed on the top wall of the box cover 2 and drives the hoist 6 by using a chain wheel and a chain. One speed reducer one 7 drives two hoists 6, and a total of two speed reducers one 7 are required.

[0040] In a specific embodiment of the utility model, as shown in Figure 3 and Figure 4As shown, the drive assembly on the bottom wall of the box cover 2 further comprises a hand wheel 9, which is installed on the input shaft end of the lifting machine 6. One hand wheel 9 drives two lifting machines 6, and a total of two hand wheels 9 are required.

[0041] The lifting machine 6 is driven by a speed reduction motor 7 installed on the top wall of the box cover 2, which avoids the operator to work on the high position, and directly controls on the man-machine interface of the equipment; the hand wheel 9 is adopted in the drive assembly on the bottom wall of the box cover 2, which is convenient for the operator to manually adjust the height position of the floating roller frame 4 and the conveying roller 5 below.

[0042] In a specific embodiment of the present application, as shown in Figures 1-4 The side wall of the box cover 2 is provided with an air exhaust pipe joint 10 and an emptying pipe joint 11. The box cover 2 is connected with a negative pressure equipment through the air exhaust pipe joint 10, and the negative pressure equipment can be a negative pressure fan or a vacuum pump set. Valves are installed on the air exhaust pipe joint 10 and the emptying pipe joint 11, and the valves adopt ball valves with good sealing performance.

[0043] Specifically, as shown in Figures 1-4 The air exhaust pipe joint 10 and the emptying pipe joint 11 are installed on the two side walls of the box cover 2, and the four pipe joints are symmetrically arranged.

[0044] The air exhaust pipe joint 10 and the emptying pipe joint 11 are arranged on the side wall of the box cover 2, which can achieve vacuum extraction at the central position of the whole negative pressure production line and recovery at the central position. The symmetrically arranged pipe joints can achieve rapid response.

[0045] In a specific embodiment of the present application, as shown in Figures 1-4 The floating roller frame 4 is provided with a speed reduction motor 8 for driving the rotation of the conveying roller 5, and the speed reduction motor 8 drives the synchronous rotation of the plurality of conveying rollers 5 through a chain wheel and a chain. The top wall and the bottom wall of the box cover 2 are provided with a buckle cover 202 for positioning at the installation position of the speed reduction motor 8, that is, the buckle cover 202 is outwardly protruding.

[0046] In a specific embodiment of the present application, as shown in Figures 1-4 The two side walls of the box cover 2 are respectively provided with a window 203, and the side wall of the rear cover 3 is respectively provided with a window 301, and the height positions of the window 203 and the window 301 are aligned with the output position of the extruded plate.

[0047] Specifically, the window 203 and the window 301 are made of organic glass with good transparency, and the organic glass is sealed by a sealing rubber around.

[0048] The windows 203 and 301 are arranged on the two side walls of the box cover 2 and the rear end cover 3 respectively, so that the shape of the conveying extruded plate can be observed, and the production status of the extruded plate can be known in time.

[0049] The utility model discloses a traction mechanism for negative pressure foaming working principle: in the whole extruded plate's negative pressure foaming production line, the utility model discloses a traction mechanism for negative pressure foaming is sealed between the flattening device and rear end conveying frame. The reduction motor no. 8 drives all the conveying roller 5 rotation through the sprocket and chain, and the conveying roller 5 is contacted with the outer wall of extruded plate and realizes the purpose of backward traction conveying extruded plate. When the specification of the production extruded plate changes, the conveying gap between the upper and lower conveying roller 5 groups needs corresponding adjustment. When adjusting, the rotation revolution of the reduction motor no. 1 7 and the forward rotation or the reverse rotation are input on the equipment man-machine interface, and the reduction motor no. 1 7 drives the elevator 6 on the top wall of the box cover 2 synchronous action. Four elevators 6 synchronous lift the four corner positions of the floating roller frame 4, guarantee that the floating roller frame 4 keeps horizontal position and does not incline and sway during the lifting process. Then, the operator needs to rotate the hand wheel 9 manually, and the two hand wheels 9 rotate alternately, which also guarantees that the lower floating roller frame 4 rises or falls roughly horizontally. After adjusting the conveying gap, stop operating, and observe the traction conveying shape of the extruded plate through the window no. 203 and the window no. 301.

[0050] In summary, the utility model discloses traction mechanism for negative pressure foaming, through the box cover 2 of setting up sealed floating roller frame 4 and conveying roller 5 on the frame 1, relative to the sealed whole traction equipment in prior art, reduced sealed volume, reduced the requirement of the plate strength of box cover 2, not easy to appear leakage, through the setting of flange plate 201 and rear end cover 3, facilitate sealing connection together with other equipment, through the drive assembly is arranged on the top wall and bottom wall of box cover 2 respectively, can be controlled in the external environment to the drive assembly, facilitate flexible control conveying gap. The utility model discloses traction mechanism for negative pressure foaming, facilitate integrated into the negative pressure foaming production line of extruded sheet, can conveniently adjust conveying gap. In addition, through setting four lifting machines 6 that are one group in the four corner positions of the top wall or bottom wall of box cover 2, when synchronous operation, can synchronous lifting four corner positions of floating roller frame 4, guarantee that floating roller frame 4 keeps horizontal position and does not incline and sway during lifting, through using round pipe sealing in the periphery of screw rod of screw rod elevator, can avoid the leakage of negative pressure in the installation position of screw rod elevator. Through the drive of speed reducer motor one 7 installed on the top wall of box cover 2 to lifting machine 6, avoided the high operation of operator, directly control on the man-machine interface of equipment, through the drive assembly on the bottom wall of box cover 2 adopts hand wheel 9, facilitate operator manually adjusting the height position of lower floating roller frame 4 and conveying roller 5. Through the setting of suction pipe joint 10 and emptying pipe joint 11 on the side wall of box cover 2, can achieve the central position vacuumizing in whole negative pressure production line, carry out emptying recovery in central position, symmetrically set pipe joint, can achieve quick response. Through setting window one 203 and window two 301 on the two side walls of box cover 2 and rear end cover 3 respectively, facilitate observing the form of extruded sheet in conveying, timely understanding the production condition of extruded sheet.

[0051] The above-described embodiments are merely preferred modes of the utility model, and do not limit the scope of the utility model, and various deformations and improvements of the technical solutions of the utility model made by those skilled in the art without departing from the design spirit of the utility model shall fall within the protection scope defined by the claims of the utility model.

Claims

1. A pulling mechanism for negative pressure foaming, characterized by, Include: Frame (1), the frame (1) is provided with a box cover (2), the front end of the box cover (2) is provided with a front flange plate (201) connected to the leveling device cover, and the box cover (2) is sealed and connected to the outer box shell of the conveying frame through the rear end cover (3); Floating roller frame (4), a plurality of conveying rollers (5) are arranged in parallel on one side of the floating roller frame (4) towards the extruded plate, and two floating roller frames (4) are arranged face to face in the box cover (2) and can move up and down; Drive assembly, two groups of drive assemblies are arranged on the top wall and the bottom wall of the box cover (2), the working end of the drive assembly is inserted into the box cover (2) and connected to the floating roller frame (4) and can drive the floating roller frame (4) to move up and down.

2. The negative pressure foaming traction mechanism according to claim 1, characterized in that: The drive assembly includes a hoist (6), and four hoists (6) are respectively located at four corner positions of the top wall or the bottom wall of the box cover (2).

3. The negative pressure foaming traction mechanism according to claim 2, characterized in that: The hoist (6) specifically adopts a screw hoist, adjacent two screw hoists are connected by using a synchronous shaft, and the screw of the screw hoist is sealed by using a circular tube.

4. The negative pressure foaming traction mechanism according to claim 3, characterized in that: The drive assembly on the top wall of the box cover (2) further includes a reduction motor one (7), the reduction motor one (7) is installed on the top wall of the box cover (2) and drives the hoist (6) by using a chain wheel and a chain.

5. The negative pressure foaming traction mechanism according to claim 3, characterized in that: The drive assembly on the bottom wall of the box cover (2) further includes a hand wheel (9), and the hand wheel (9) is installed on the input shaft end of the hoist (6).

6. The negative pressure foaming traction mechanism according to claim 1, wherein: An air exhaust pipe joint (10) and a vent pipe joint (11) are installed on the side wall of the box cover (2), the box cover (2) is connected to a negative pressure device through the air exhaust pipe joint (10), and valves are installed on the air exhaust pipe joint (10) and the vent pipe joint (11).

7. The negative pressure foaming traction mechanism according to claim 1, characterized in that: A reduction motor two (8) for driving the conveying roller (5) to rotate is installed on the floating roller frame (4), and a buckle cover (202) for positioning is sealingly buckled on the top wall and the bottom wall of the box cover (2) at the installation position of the reduction motor two (8).

8. The negative pressure foaming traction mechanism according to claim 1, characterized in that: Windows one (203) are respectively arranged on the two side walls of the box cover (2), and windows two (301) are respectively arranged on the side walls of the rear end cover (3).

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