CN108481440B

CN108481440B - Plastic foam cutting device

Info

Publication number: CN108481440B
Application number: CN201810266372.7A
Authority: CN
Inventors: 申天玖
Original assignee: Zunyi Jinhongfu Technology Development Co ltd
Current assignee: Zunyi Jinhongfu Technology Development Co ltd
Priority date: 2018-03-28
Filing date: 2018-03-28
Publication date: 2020-08-18
Anticipated expiration: 2038-03-28
Also published as: CN108481440A

Abstract

The invention relates to the field of plastic foam manufacturing, and particularly discloses a plastic foam cutting device; the cutting machine comprises a rack, a moving mechanism and a cutting mechanism, wherein a track is arranged on the rack, the moving mechanism comprises a sliding block, a hydraulic jack and a mounting seat, a fixing hole is formed in the rack, and a positioning hole is formed in the sliding block; the mounting seat comprises a base and a support; the two cutting mechanisms are oppositely arranged along the base and comprise a heating element, a stepping motor and a winding roller, a groove is formed in the support, and the heating element is fixed in the groove; a cutting rope is arranged on the mounting seat, penetrates through the side wall of the groove opposite to the opening, and is fixed on the two winding rollers at two ends respectively; the fan is fixed on the mounting seat, and the working table is arranged on the frame. The cutting device of the scheme reduces the melting of plastic foam in the cutting process.

Description

Plastic foam cutting device

Technical Field

The invention relates to the field of plastic foam manufacturing, in particular to the field of plastic foam cutting.

Background

Plastic foam is a kind of high molecular material formed by dispersing a large amount of gas micropores in solid plastic, has the characteristics of light weight, heat insulation, sound absorption, shock absorption, corrosion resistance and the like, is easy to form, has good water resistance and very low price, is widely applied to the fields of packaging, heat preservation, water prevention, heat insulation, shock absorption and the like, and is one of the most widely applied plastics in the world today.

In the preparation of plastic foam, gas is generally introduced into liquid or molten plastic to generate micropores; then the micropores are grown to a certain volume; and fixing the microporous structure by a physical or chemical method to obtain the plastic foam. However, the plastic foam manufacturing companies typically buy plastic foam boards produced by the plastic foam manufacturing companies, and then cut the plastic foam boards into smaller-sized boards according to their own needs. The raw material of the plastic foam is generally polystyrene, and the cutting of the plastic foam plate is generally carried out by firstly heating a cutter, when the cutting is carried out, the plastic foam plate contacted with the cutter is melted by the heat, but the plastic foam around the cutting position is also melted by the heat due to the overhigh temperature, so that various aromatic hydrocarbons are generated, and the aromatic hydrocarbons are inhaled by a person to generate a poisoning reaction, so that the physical health of the worker is greatly harmed.

Disclosure of Invention

The invention aims to provide a cutting device for reducing melting of plastic foam in a cutting process.

In order to achieve the purpose, the technical scheme of the invention is as follows: the plastic foam cutting device comprises a rack, a moving mechanism and two cutting mechanisms, wherein the rack is provided with an inverted L-shaped track, the moving mechanism comprises a sliding block capable of sliding along the track, a hydraulic jack fixed on the sliding block and a mounting seat fixed on a push rod of the hydraulic jack, the rack is provided with a plurality of fixing holes along the track, and the sliding block is provided with positioning holes capable of being matched with the fixing holes; the mounting seat comprises a base and two supports which are distributed in a T shape; the two cutting mechanisms are oppositely arranged along the base and comprise a heating element, a stepping motor fixed on the mounting seat and a winding roller driven by the stepping motor, a groove with an opening facing to the other support is formed in the support, and the heating element is fixed in the groove; the mounting seat is provided with a cutting rope, the cutting rope penetrates through the side wall of the groove opposite to the opening, and two ends of the cutting rope are respectively fixed on the winding rollers of the two cutting mechanisms; the fan is fixed on the mounting seat, and the working table is arranged on the frame.

The principle of the scheme is as follows:

the stepping motor can drive the winding rollers to rotate, the cutting rope is wound on the winding roller on one side, the cutting rope is enabled to move from one winding roller to the other winding roller, and during the process, the cutting rope can move relative to the plastic foam board to cut the plastic foam board. After the fan works, the air flow is promoted, the heat generated by cutting is dissipated, and meanwhile, the aromatic hydrocarbon generated by cutting is blown away.

When the sliding block slides along the track, the cutting mechanism can move along with the sliding block, and the position needing to be cut can be conveniently adjusted. Secondly, because the track is the shape of falling L, so when the slider slided the vertical section of track, cutting mechanism's direction changed, and the cutting rope becomes vertical, can cut simultaneously a plurality of plastic foam board that fold together.

The beneficial effect of this scheme does:

and (I) opening a fan in the cutting process, wherein the fan enables air around the cutting device to flow, heat generated by cutting is promoted to dissipate, excessive temperature rise of the plastic foam plate around the cutting rope is avoided, the melting amount of the plastic foam plate is reduced, and then the generation of aromatic hydrocarbon is reduced. Secondly, the fan can blow away the aromatic hydrocarbon that produces, reduces the aromatic hydrocarbon that the workman of operation cutting device inhales, protects workman's health. In addition, the fan can blow away the piece that produces in the cutting process, avoids the piece to adhere to on the foam board, need not clean the foam board again after the cutting, further improves the production speed of foam product.

When the sliding block is positioned at the horizontal section of the track, the cutting rope is in the horizontal direction, the hydraulic jack is opened at the moment, so that the cutting rope can cut the plastic foam board from top to bottom, and the plastic foam board can be cut quickly due to the fact that the contact length of the cutting rope and the plastic foam board is long; and the slider is located orbital vertical section, and the cutting rope becomes vertical, opens the hydraulic ram this moment and can make the cutting rope follow side cut the foam board, can cut polylith foam board simultaneously, so more be fit for being used for the polylith foam board that piles up this moment and cut, so this device adaptability is stronger.

(III) be equipped with the recess on the support, the cutting rope can run through the recess lateral wall relative with the recess opening, during the actual cutting, in getting into the recess earlier to the cutting rope after the plastic foam board cuts, then passes the recess lateral wall, because the clearance between cutting rope and the recess lateral wall is less, so plastic foam attached to on the cutting rope is scraped, falls in the recess, convenient cleanness.

(IV) the cutting rope after cutting the plastic foam board leaves the groove and then is wound on the winding roller and is not used any more, the heat on the cutting rope has enough time to dissipate and dissipate at the moment, the continuous cutting and heating are avoided, the temperature on the cutting rope continuously rises, and then the excessive temperature is avoided to melt a large amount of plastic foam, so that the generation of aromatic hydrocarbon can be reduced, and the health of workers is further protected.

In the first preferred embodiment, as a further improvement of the basic embodiment, the inner walls of the fixing hole and the positioning hole are provided with threads. Before cutting the plastic foam, the fixing holes and the positioning holes are aligned, then the bolts are screwed into the fixing holes and the positioning holes in sequence, the sliding block is fixed on the frame, the bolts are not easy to fall out of the fixing holes relative to other positioning tools such as positioning pins and the like, the cutting mechanism is prevented from shaking in the cutting process,

in a second preferred scheme, as a further improvement of the basic scheme, a baffle is fixed at an opening of the groove. The baffle can avoid the plastic foam who falls into the recess to fall out from the recess, convenient clearance.

Preferably scheme three, as the further improvement to basic scheme, be equipped with the bracing piece on the base, the bracing piece includes that one end and base articulated outer pole and the interior pole that can go into in the outer pole, all is equipped with the through-hole on interior pole and the outer pole. When the sliding block is positioned on the vertical section of the track, the inner rod extends out of the outer rod, and the positioning pin is inserted into the through hole, so that the inner rod and the outer rod cannot move relatively. Then the support rod is rotated to enable one end of the inner rod, which is far away from the base, to be supported on the machine frame. The supporting rod plays a supporting role in the moving mechanism and the cutting mechanism, and when the sliding block is located at the vertical section of the track, the sliding block is prevented from falling off from the track under the action of gravity of the moving mechanism and the cutting mechanism.

Preferred scheme four, as the further improvement to preferred scheme three, be fixed with the holding tank on the hydraulic ram outer wall, the holding tank internal fixation has the flexure strip, and the bracing piece can be gone into in the holding tank. When not using the bracing piece, the bracing piece can not cause to block the plastic foam that needs processing in can the income holding tank, makes things convenient for going on of cutting.

Preferred scheme five, as the further improvement to preferred scheme four, the interior pole is kept away from base one end and is articulated have the supporting shoe, and the supporting shoe is kept away from and is fixed with the viscose layer on the base side. When the supporting rod is used, the adhesive layer can be adhered to the rack, the supporting rod is prevented from sliding relative to the rack, and the supporting effect of the supporting rod is better.

Preferably, as a further improvement to the basic scheme, the fixing hole is in a frustum pyramid shape with a size smaller than that of the other end towards one end of the hydraulic ram, and the moving mechanism further comprises a positioning block capable of being clamped into the fixing hole. Compare in the screw hole, need not the screw in when the locating piece is gone into to the card, reduce the time of fixed slider, further improve production efficiency.

Drawings

FIG. 1 is a schematic structural view of a plastic foam cutting apparatus according to embodiment 1 of the present invention;

FIG. 2 is a schematic diagram of the slider of FIG. 1 in the vertical section of the track;

fig. 3 is a schematic structural view of embodiment 2.

Detailed Description

The invention is described in further detail below with reference to the following figures and detailed description:

the reference signs are: the device comprises a frame 1, a track 11, a guide rod 12, a fixing hole 13, a slide block 2, a positioning hole 21, a hydraulic jack 3, an accommodating groove 31, an outer rod 41, a supporting block 42, an inner rod 43, a base 5, a support 51, a fan 52, a support 53, a winding roller 54, a groove 6, a baffle 61, a heating part 62, a cutting rope 63 and a workbench 7.

Example 1

The plastic foam cutting device comprises a frame 1, a moving mechanism and two cutting mechanisms for cutting a plastic foam plate. As shown in fig. 1, a track 11 in an inverted L shape is arranged on a rack 1, a moving mechanism includes a slider 2 capable of sliding along the track 11, a hydraulic ram 3 welded at the bottom of the slider 2, and a mounting seat welded on a push rod of the hydraulic ram 3, a guide rod 12 parallel to the track 11 is welded on the rack 1, the guide rod 12 penetrates through the slider 2, the slider 2 can slide along the guide rod 12, and the diameter of a channel for the guide rod 12 to pass through on the slider is larger than that of the guide rod 12, so that the slider can slide to a vertical section from a horizontal section of the guide rod 12. The sliding block 2 is in an inverted T shape, and when the sliding block 2 slides along the track 11, the hydraulic jack 3 and the mounting seat move along with the sliding block. The rack 1 is provided with a plurality of fixing holes 13 along the rail 11, the sliding block 2 is provided with a positioning hole 21 which can be matched with the fixing holes 13, the inner walls of the fixing holes 13 and the positioning hole 21 in the embodiment are provided with threads, and the sliding block 2 and the rack 1 can be fixed after bolts are screwed into the fixing holes 13 and the positioning hole 21.

The mounting seat comprises a base 5 and two supports 51 which are distributed in a T shape, the base 5 is welded on a push rod of the hydraulic jack 3, and the base 5 and the supports 51 are integrally formed. The two cutting mechanisms are symmetrical along the central line of the base 5, the cutting mechanisms comprise a heating element 62, a winding roller 54 and a stepping motor (not shown in the drawing) welded on a mounting seat, a support 53 is welded on the support 51, and the end part of the winding roller 54 penetrates through the support 53 and can rotate relative to the support 53. The rotating gear is welded at the inner end of the winding roller 54, the driving gear is welded on the output shaft of the stepping motor, and the winding roller 54 can be driven to rotate when the stepping motor works.

Taking the right cutting mechanism as an example, the support 51 is provided with a groove 6 with an opening facing to the left, the heating member 62 is glued on the top wall of the groove 6, and the heating member 62 in this embodiment is a heating resistor. Be equipped with cutting rope 63 on the mount pad, cutting rope 63 in this embodiment is the wire, and cutting rope 63 runs through recess 6 and the relative lateral wall of opening, and the welding respectively is on two winding rollers 54 at cutting rope 63 both ends, and when winding roller 54 rotated, cutting rope 63 was rolled up on winding roller 54, and cutting rope 63 can slide for support 51, and the foam attached to on cutting rope 63 is scraped, drops in recess 6. A baffle 61 is arranged at the opening of the groove 6, and the bottom of the baffle 61 is welded on the support 51, so that the plastic foam in the groove 6 is prevented from falling out.

The fan 52 is fixed on the mounting seat through bolts, and the fan 52 can blow downwards when in work. A hydraulic lifting top (not shown in the figure) is welded on the rack 1, a push rod of the hydraulic lifting top is in the vertical direction, a workbench 7 is welded on the top of the push rod, and plastic foam needing to be cut can be placed on the workbench 7.

Be equipped with the bracing piece on the base 5, the bracing piece includes lower extreme and base 5 articulated outer pole 41 and can stretch into interior pole 43 in the outer pole 41, and the through-hole that all is equipped with on interior pole 43 and the outer pole 41 aligns two through-holes and with the locating pin insert the through-hole in the back, can make interior pole 43, the unable relative movement of outer pole 41. The upper end of outer pole 41 articulates there is supporting shoe 42, and the one side cementing that interior pole 43 was kept away from to supporting shoe 42 has the viscose layer, rotates the bracing piece, can make the viscose layer glue on frame 1, forms triangle-shaped with moving mechanism and frame 1, plays the supporting role to moving mechanism. The welding has holding tank 31 on the right side wall of hydraulic ram 3, and the rubber joint has the flexure strip in the holding tank 31, can block in holding tank 31 after the bracing piece finishes using.

The operation of the cutting device of the present embodiment is as follows:

before cutting the single plastic foam board, the plastic foam board is laid on the worktable 7, the sliding block 2 is slid to enable the sliding block 2 to be positioned on the horizontal section of the track 11, and the bolts are screwed into the aligned fixing holes 13 and the positioning holes 21. The cutting cord 63 is wound around the winding roller 54 on the right side, the two stepping motors are turned on, the stepping motor on the left side is rotated forward, the stepping motor on the right side is rotated backward, and the cutting cord 63 moves to the left side and is wound around the winding roller 54 on the left side gradually. The blower 52 and the right heating element 62 are then turned on, and the heating element 62 heats the cutting cord 63. And then the hydraulic jack 3 is opened, and the push rod of the hydraulic jack 3 is controlled to move downwards, so that the cutting rope 63 cuts the plastic foam board. After cutting, the stepping motor, the hydraulic jack 3, the fan 52 and the heating element 62 are closed, and the plastic foam falling into the left groove 6 is taken out and screwed into the bolt.

Before cutting a plurality of plastic foam boards, as shown in fig. 2, firstly sliding the sliding block 2 to make the sliding block 2 located on the vertical section of the track 11, screwing the bolt into the aligned fixing hole 13 and the positioning hole 21, then rotating the supporting rod, pulling out the inner rod 43, inserting the positioning pin into the two aligned through holes, adhering the adhesive layer on the rack 1 below the sliding block 2, and then rolling the cutting rope 63 on the winding roller 54 below. The plastic foam boards are then stacked together in the vertical direction and the height of the table 7 is adjusted by means of a hydraulic lifter jack so that the plastic foam boards are directed against the base 5.

The stepper motor, fan 52 and lower heating element 62 are then turned on, and the upper stepper motor is controlled to rotate in the forward direction and the lower stepper motor is controlled to rotate in the reverse direction. The hydraulic ram 3 is opened and the push rod of the hydraulic ram 3 is controlled to extend, so that the cutting rope 63 cuts the plurality of plastic foam boards stacked. After cutting, the stepping motor, the fan 52 and the heating element 62 are turned off, the push rod of the hydraulic ram 3 is controlled to retract, then the hydraulic ram 3 is turned off, the plastic foam in the groove 6 is taken out, the supporting block 42 is separated from the frame 1, the positioning pin is taken out, the inner rod 43 is retracted into the outer rod 41, and then the outer rod 41 is clamped into the accommodating groove 31.

Example 2

The difference from embodiment 1 is that, as shown in fig. 3, the fixing hole 13 is in a frustum pyramid shape with one end close to the hydraulic ram 3 smaller than the other end, and the moving mechanism further includes a frustum pyramid-shaped positioning block, and after the fixing hole 13 is aligned with the positioning hole 21, the positioning block can be clamped into the fixing hole 13 and the positioning hole 21, so that the slider 2 cannot slide along the rail 11.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make various changes and modifications without departing from the concept of the present invention, and these should be construed as the scope of protection of the present invention, which will not affect the effect of the implementation of the present invention and the utility of the patent. The techniques, shapes, and structural parts, which are omitted from the description of the present invention, are all known techniques.

Claims

1. The plastic foam cutting device is characterized by comprising a rack, a moving mechanism and two cutting mechanisms, wherein an inverted L-shaped track is arranged on the rack, the moving mechanism comprises a sliding block capable of sliding along the track, a hydraulic jack fixed on the sliding block and a mounting seat fixed on a push rod of the hydraulic jack, a plurality of fixing holes are formed in the rack along the track, and positioning holes matched with the fixing holes are formed in the sliding block; the mounting seat comprises a base and two supports which are distributed in a T shape; the two cutting mechanisms are oppositely arranged along the base and comprise a heating element, a stepping motor fixed on the mounting seat and a winding roller driven by the stepping motor, a groove with an opening facing to the other support is formed in the support, the heating element is fixed in the groove, and a baffle is fixed at the opening of the groove; the installation seat is provided with a cutting rope which is a metal wire, the cutting rope penetrates through the side wall of the groove opposite to the opening, and two ends of the cutting rope are respectively fixed on the winding rollers of the two cutting mechanisms; the fan is fixed on the mounting seat, and the workbench is arranged on the rack.

2. The apparatus for cutting plastic foam according to claim 1, wherein the fixing hole and the positioning hole are provided with screw threads on inner walls thereof.

3. The apparatus for cutting plastic foam according to claim 1, wherein a baffle is fixed at an opening of the groove.

4. The apparatus as claimed in claim 1, wherein the base has a support rod, the support rod comprises an outer rod hinged to the base and an inner rod retractable into the outer rod, and the inner rod and the outer rod have through holes.

5. Plastic foam cutting device according to claim 4, characterized in that a receiving groove is fixed on the outer wall of the hydraulic ram, wherein an elastic sheet is fixed in the receiving groove, and the support bar can be snapped into the receiving groove.

6. The device for cutting plastic foam as recited in claim 5, wherein a support block is hinged to an end of the inner bar remote from the base, and an adhesive layer is fixed to a side of the support block remote from the base.

7. The apparatus as claimed in claim 1, wherein the fixing hole is a truncated pyramid shape having a smaller size toward one end of the hydraulic ram than the other end thereof, and the moving mechanism further comprises a positioning block which is snapped into the fixing hole.