CN117261024A - Polyurethane sheet particle forming device - Google Patents
Polyurethane sheet particle forming device Download PDFInfo
- Publication number
- CN117261024A CN117261024A CN202311338558.6A CN202311338558A CN117261024A CN 117261024 A CN117261024 A CN 117261024A CN 202311338558 A CN202311338558 A CN 202311338558A CN 117261024 A CN117261024 A CN 117261024A
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- China
- Prior art keywords
- rod
- pressing plate
- sliding
- piece
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- 229920002635 polyurethane Polymers 0.000 title claims abstract description 87
- 239000004814 polyurethane Substances 0.000 title claims abstract description 87
- 239000002245 particle Substances 0.000 title claims description 35
- 238000001816 cooling Methods 0.000 claims abstract description 20
- 239000008188 pellet Substances 0.000 claims abstract description 18
- 238000000465 moulding Methods 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims description 158
- 239000000463 material Substances 0.000 claims description 17
- 230000007704 transition Effects 0.000 claims description 14
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 238000001125 extrusion Methods 0.000 claims description 9
- 239000000110 cooling liquid Substances 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims description 2
- 230000006835 compression Effects 0.000 claims 4
- 238000007906 compression Methods 0.000 claims 4
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 238000002360 preparation method Methods 0.000 abstract description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 235000011089 carbon dioxide Nutrition 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 239000008187 granular material Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 239000004594 Masterbatch (MB) Substances 0.000 description 1
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/04—Making granules by dividing preformed material in the form of plates or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/04—Conditioning or physical treatment of the material to be shaped by cooling
- B29B13/045—Conditioning or physical treatment of the material to be shaped by cooling of powders or pellets
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention discloses a polyurethane pellet forming device, which relates to the technical field of polyurethane preparation and comprises the following components: the lower pressure plate assembly comprises a die frame, a lower pressure plate and a first elastic piece, the die frame is arranged on the rod, the lower pressure plate is vertically arranged in the die frame in a sliding mode, two ends of the lower pressure plate, which are opposite to the sliding stroke of the die frame, are provided with limiting positions, the elastic force of the first elastic piece acts on the lower pressure plate upwards, the upper pressure plate assembly comprises an upper pressure plate, a cutter and a second elastic piece, the elastic force of the second elastic piece acts on the cutter holder upwards, the base plate is arranged on the cutter holder or the top plate in a sliding mode, the linkage rod is fixedly connected with the cutter holder, and the linkage rod is vertically connected with the rod in a sliding mode. According to the invention, the prepared polyurethane pellet block is thinner, is easy to crush in subsequent processing, can be prepared into a pellet block with a specific shape, is beneficial to product sales, can be cooled and shaped during and after pellet molding, and has low cooling cost.
Description
Technical Field
The invention relates to the technical field of polyurethane preparation, in particular to a polyurethane pellet forming device.
Background
Polyurethane materials are very widely used, upstream enterprises generally prepare polyurethane into plates, granules and the like for storage and sale, and downstream enterprises can reprocess according to requirements.
The utility model provides a patent application that publication No. CN111015995A, the name is "a granule cutting device of thermoplastic polyurethane master batch", in its use will process polyurethane and pour into the hopper, in the rotation through carrying the auger carries the conveyer pipe with the polyurethane in the hopper, utilize the heating coil to heat the conveyer pipe, polyurethane enters into the discharging pipe through the conveyer pipe, carry dry ice through the dry ice jar in to the dry ice conveyer pipe, carry the cooling down to the discharging pipe in carrying the cooling pipe again by the dry ice conveyer pipe, the polyurethane after solidifying spills from the left end of discharging pipe, drive the cutter through cutting motor and rotate, cut the granule to polyurethane.
For example, in the prior art of the above patent, when the polyurethane is extruded, the dry ice is needed to be utilized for quenching and cooling, the cooling cost is higher, and the granulating mode is to directly cut the polyurethane extruded from the discharging pipe through the blade, so that the thickness of polyurethane particles is very large on one hand, the polyurethane particles are not easy to crush in the subsequent processing, and on the other hand, the polyurethane particles cannot be molded, so that the polyurethane particles are not beneficial to sales.
Disclosure of Invention
The invention aims to provide a polyurethane pellet forming device which aims to solve the defects in the prior art.
In order to achieve the above object, the present invention provides the following technical solutions: a polyurethane pellet molding apparatus comprising: a rod piece; the lower pressing plate assembly comprises a die frame, a lower pressing plate and a first elastic piece, the die frame is arranged on the rod piece, the lower pressing plate is vertically arranged in the die frame in a sliding mode, two ends of the sliding stroke of the lower pressing plate relative to the die frame are provided with limiting positions, the lower pressing plate is a flat station when sliding upwards relative to the die frame to be limited, the upper surface of the lower pressing plate is flush with the upper surface of the die frame in the flat station, the lower pressing plate is a concave station when sliding downwards relative to the die frame to be limited, and the elastic force of the first elastic piece acts upwards on the lower pressing plate; the upper pressing plate assembly comprises an upper pressing plate, a cutter and a second elastic piece, wherein the upper pressing plate comprises a top plate and a plurality of upper pressing plate units which are arranged together, each upper pressing plate unit is fixedly connected to the top plate through a connecting rod, the cutter comprises a cutter seat and a cutter blade which are connected, the cutter seat is arranged on the connecting rod in a penetrating and sliding manner, the cutter blade is movably distributed in a gap between each upper pressing plate unit, and the elastic force of the second elastic piece acts on the cutter seat upwards; the base plate is arranged on the tool apron or the top plate in a sliding way, and a stop limiting station inserted between the tool apron and the top plate is arranged in the sliding stroke of the base plate; the linkage rod is fixedly connected with the tool apron, is vertically in sliding connection with the rod piece, and has the following strokes in sequence in the sliding process of the linkage rod relative to the rod piece: the first travel, the linkage rod moves down relative to the rod piece to drive the upper pressing plate assembly to move down integrally, so that each upper pressing plate unit presses molten polyurethane on the lower pressing plate into polyurethane sheet materials, the lower pressing plate is extruded to the concave station from the flat station, and the first elastic piece stores energy; the second stroke, the linkage rod moves down relative to the rod piece continuously to drive the cutter to move down relative to the lower pressing plate, so that the blade cuts the polyurethane sheet into polyurethane particle blocks, the second elastic piece stores energy, and the backing plate moves to the stop limiting station; the third stroke, the linkage rod moves upwards relative to the rod piece to drive the upper pressing plate assembly to move upwards integrally, and the elastic force of the first elastic piece drives the lower pressing plate to slide upwards relative to the die frame to a flat station and keep abutting with the blade; and in the fourth stroke, the linkage rod moves upwards relative to the rod piece to drive the upper pressing plate assembly to move upwards integrally so as to be separated from the lower pressing plate.
Further, the polyurethane cooling device also comprises a cooling tank and a fixing frame which are fixedly connected relatively, the rod piece is vertically arranged in a moving mode relative to the fixing frame, the rod piece moves downwards relative to the fixing frame after the first stroke is finished so as to drive the lower pressing plate assembly and the upper pressing plate assembly to integrally move downwards, the polyurethane sheet material is immersed into cooling liquid in the cooling tank, and the rod piece moves upwards relative to the fixing frame to reset when the fourth stroke is started.
Further, still package extruder, the horizontal sliding connection of mould frame is on the member, and the stroke that the lower pressure plate subassembly moved through mould frame relative to the member has: an alignment station for completely aligning the lower pressure plate with the upper pressure plate, and a material injection station for staggering the lower pressure plate from the upper pressure plate and for positioning the lower pressure plate under the extrusion head of the extruder; in the first stroke, before the lower surface of the upper pressing plate is lower than the upper surface of the die frame, the lower pressing plate assembly moves to an alignment station; and in the fourth stroke, the lower pressing plate assembly is switched from the alignment station to the material injection station.
Further, still include link gear, link gear includes: the sliding plate is vertically arranged on the fixing frame in a sliding manner, the rod piece is horizontally connected with the sliding plate in a sliding manner, the sliding plate is provided with a closed guide rail, the guide rail sequentially comprises a first vertical section, a first horizontal section, a first inclined transition section, a second horizontal section, a second inclined transition section, a third horizontal section, a second vertical section and a fourth horizontal section, which are connected with each other at first, the tail end of the fourth horizontal section is connected with the first end of the first vertical section, and the second horizontal section, the first horizontal section, the third horizontal section and the fourth horizontal section are sequentially heightened; the sliding column is rotationally connected with the linkage rod and is movably arranged on the guide rail; the driving assembly is used for driving the sliding column to move along the guide track, the sliding column moves to drive the linkage rod to move through the first vertical section by a first stroke, the sliding movement drives the linkage rod to move through the first inclined transition section by a second stroke, the sliding movement drives the linkage rod to move through the second inclined transition section by a third stroke, and the sliding column moves to drive the linkage rod to move through the second vertical section by a fourth stroke; the gear is rotationally connected to the rod piece; the first rack is fixedly connected with the corresponding linkage rod and meshed with the gear; the second rack is connected with the mold frame in a sliding manner through a second connecting rod, the sliding direction of the second rack is consistent with that of the mold frame relative to the rod piece, both ends of the sliding stroke of the second connecting rod relative to the mold frame are provided with limiting positions, the second connecting rod is connected with the mold frame in a magnetic attraction manner when sliding to be limited from the direction of moving from the alignment station to the material injection station relative to the mold frame, and the mold frame is connected with the rod piece in a magnetic attraction manner when the lower pressure plate assembly is positioned at the alignment station and is meshed and matched with the gear; the third elastic piece drives the backing plate to slide to the stop limiting station in the deformation recovery process; the first guide rail is fixedly connected to the rod piece and sequentially comprises an inclined section and a vertical guide section which are connected from bottom to top; the trigger piece is fixedly connected to the base plate, the sliding column moves through the second vertical section to drive the trigger piece to be matched with the inclined section and the vertical guide section in sequence in a moving way, and the third elastic piece stores energy; the elastic force of the fourth elastic piece always acts on the sliding plate upwards; the second guide rail is fixedly connected relative to the fixing frame and comprises an inclined guide section and a waveguide section connected with the inclined lower end of the inclined guide section, and the sliding column is sequentially in sliding fit with the inclined guide section and the waveguide section in the process of moving through the first horizontal section, so that the sliding plate moves downwards relative to the fixing frame and the fourth elastic piece stores energy.
Further, the driving assembly comprises a servo motor and a swinging rod, the swinging rod is rotationally connected to a sliding plate in the area surrounded by the guide rail, the swinging rod is in sliding connection with the sliding column along the length direction of the swinging rod, and the servo motor is fixedly arranged on the sliding plate and used for driving the swinging rod to rotate.
Further, the second connecting rod and the mold frame are respectively fixedly connected with a first magnetic block, and the two first magnetic blocks can be in magnetic attraction fit; the die frame and the rod piece are respectively fixedly connected with a second magnetic block, and the two second magnetic blocks can be in magnetic attraction fit.
Further, fixedly connected with second guide arm on the blade holder, backing plate slip wears to establish on the second guide arm, and the third elastic component is the third pressure spring, and the third pressure spring cover is established on the second guide arm, and the one end of third pressure spring is connected with the one end that the blade holder was kept away from to the second guide arm, and the other end is connected with the backing plate.
Further, a limiting block is fixedly connected to the fixing frame, and the top of the sliding plate is driven to be abutted against the limiting block by the elastic force of the fourth elastic piece during the period that the post rod is not in sliding fit with the second guide rail.
Further, a supporting rod is fixedly connected to the die frame, a first guide rod is fixedly connected to the bottom of the lower pressing plate and penetrates through the supporting rod to be in sliding fit, an end cap is arranged at the bottom of the first guide rod, the first elastic piece is a first pressure spring, the first pressure spring is sleeved on the first guide rod, one end of the first pressure spring is abutted to the supporting rod, and the other end of the first pressure spring is abutted to the lower pressing plate.
Further, the second elastic piece is a second pressure spring, the second pressure spring is sleeved on the connecting rod, one end of the second pressure spring is abutted against the tool apron, and the other end of the second pressure spring is abutted against the corresponding upper pressing plate unit.
In the technical scheme, the linkage rod moves downwards relative to the rod piece to drive the upper pressing plate assembly to move downwards integrally, the upper pressing plate assembly presses the lower pressing plate to enable the lower pressing plate to slide downwards relative to the die frame, so that molten polyurethane in the space surrounded by the lower pressing plate, the inner peripheral wall of the die frame and the upper pressing plate is pressed into polyurethane sheets, and meanwhile, the first elastic piece is also enabled to store energy; the linkage rod continuously moves downwards relative to the rod piece to drive the cutter to move downwards relative to the lower pressing plate so that the cutter cuts the polyurethane sheet into polyurethane particle blocks, meanwhile, the second elastic piece is also stored with energy, and at the moment, the backing plate is inserted between the cutter holder and the top plate to prevent the second elastic piece from releasing elasticity; then, the linkage rod moves upwards relative to the rod piece to drive the upper pressing plate assembly to move upwards integrally, the first elastic piece releases elastic force to drive the lower pressing plate to slide upwards relative to the die frame to push the polyurethane particles out of the die frame, and the second elastic piece cannot enable the blade to retreat into a gap of each upper pressing plate unit due to the blocking of the base plate, so that the blade is kept in a device for cutting polyurethane, the cooling and forming of the polyurethane particles are facilitated, and the fact that adjacent polyurethane particles are adhered together again after the blade retreats is avoided; the linkage rod continues to move upward relative to the rod member to drive the upper platen assembly to move upward integrally to disengage from the lower platen and to move away from the polyurethane pellet. According to the invention, the prepared polyurethane particle block is thinner, is easy to crush in subsequent processing, can be prepared into particle blocks with specific shapes by designing the shapes of the upper pressing plate unit and the blade, is beneficial to product sales, can be cooled and shaped during and after the forming of the particle blocks, and has low cooling cost.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
FIGS. 1-4 are schematic structural diagrams of embodiments of the present invention;
FIG. 5 is a cross-sectional view of a structure provided by an embodiment of the present invention;
fig. 6-8 are schematic structural views of a sliding column according to an embodiment of the present invention at the junction between the second vertical section and the fourth horizontal section;
fig. 9 is a schematic structural diagram of a sliding plate and a guide rail according to an embodiment of the present invention;
FIG. 10 is a cross-sectional view of a connection structure of a second connecting rod, a mold frame and two first magnetic blocks according to an embodiment of the present invention;
FIG. 11 is a schematic diagram of a sliding column according to an embodiment of the present invention, which is slidingly engaged with a first horizontal segment and an inclined guide segment;
FIGS. 12-13 are schematic diagrams of sliding fit of a sliding column with a second horizontal segment and a waveguide segment simultaneously according to an embodiment of the present invention;
FIG. 14 is a schematic diagram of a sliding pillar according to an embodiment of the present invention slidingly engaged with a third horizontal segment and a waveguide segment;
fig. 15-16 are schematic structural views of a slide post according to an embodiment of the present invention in sliding engagement with a second vertical section.
Reference numerals illustrate:
1. a rod piece; 2. a lower platen assembly; 2.1, a mold frame; 2.2, a lower pressing plate; 2.3, a first elastic piece; 2.4, supporting rods; 2.5, a first guide rod; 2.6, a stop block; 3. an upper platen assembly; 3.1, an upper pressing plate unit; 3.2, connecting rod; 3.3, top plate; 3.4, a tool apron; 3.5, a blade; 3.6, a second elastic piece; 4. a backing plate; 4.1, a second guide rod; 5. a linkage rod; 6. a cooling tank; 7. a fixing frame; 7.1, limiting blocks; 8. an extrusion head; 9.1, a sliding plate; 9.2, guiding tracks; 9.21, a first vertical section; 9.22, a first horizontal segment; 9.23, a first sloped transition section; 9.24, a second horizontal segment; 9.25, a second sloped transition section; 9.26, a third horizontal segment; 9.27, a second vertical section; 9.28, a fourth horizontal segment; 9.3, a sliding column; 9.4, a servo motor; 9.5, swinging rod; 9.6, gears; 9.7, a first rack; 9.8, a first connecting rod; 9.9, a second rack; 9.10, a second connecting rod; 9.11, a first magnetic block; 9.12, a second magnetic block; 9.13, a third elastic member; 9.14, a first guide rail; 9.141, inclined sections; 9.142, vertical guide section; 9.15, triggering piece; 9.16, fourth elastic member; 9.17, a second guide rail; 9.171, oblique guide section; 9.172, waveguide segments.
Detailed Description
In order to make the technical scheme of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
Referring to fig. 1 to 16, a polyurethane pellet forming apparatus according to an embodiment of the present invention includes:
the lower pressing plate assembly 2 comprises a die frame 2.1, a lower pressing plate 2.2 and a first elastic piece 2.3, the die frame 2.1 is arranged on the rod piece 1, the lower pressing plate 2.2 is vertically arranged in the die frame 2.1 in a sliding manner, both ends of the sliding stroke of the lower pressing plate 2.2 relative to the die frame 2.1 are provided with limiting positions, the lower pressing plate 2.2 slides upwards relative to the die frame 2.1 to be a flat station when being limited, the upper surface of the lower pressing plate 2.2 is flush with the upper surface of the die frame 2.1 in the flat station, the lower pressing plate 2.2 slides downwards relative to the die frame 2.1 to be a concave station when being limited, the upper surface of the lower pressing plate 2.2 is not lower than the lower surface of the die frame 2.1 in the concave station, so that a die groove is formed by the lower pressing plate 2.2 and the peripheral side wall of the die frame 2.1, and the elastic piece 2.3 acts upwards on the lower pressing plate 2.2; the upper pressing plate assembly 3 comprises an upper pressing plate, a cutter and a second elastic piece 3.6, wherein the upper pressing plate comprises a top plate 3.3 and a plurality of upper pressing plate units 3.1 which are arranged together, the lower surfaces of the upper pressing plate units 3.1 are flush, the specific shape of the upper pressing plate units 3.1 can be designed according to the shape of a manufactured polyurethane particle block, each upper pressing plate unit 3.1 is fixedly connected to the top plate 3.3 through a connecting rod 3.2, the cutter comprises a cutter seat 3.4 and a cutter blade 3.5 which are connected, the cutter seat 3.4 is arranged on the connecting rod 3.2 in a penetrating and sliding manner, the cutter blade 3.5 is movably distributed in gaps among the upper pressing plate units 3.1, the cutter blade 3.5 fills the gaps, and the elastic force of the second elastic piece 3.6 acts on the cutter seat 3.4 upwards; the backing plate 4 is arranged on the tool apron 3.4 or the top plate 3.3 in a sliding way, and a stop limiting station inserted between the tool apron 3.4 and the top plate 3.3 is arranged in the sliding stroke of the backing plate 4; the linkage rod 5 is fixedly connected with the tool apron 3.4, and the linkage rod 5 is vertically and slidably connected on the rod piece 1.
Specifically, a supporting rod 2.4 is fixedly connected to the die frame 2.1, a first guide rod 2.5 is fixedly connected to the bottom of the lower pressing plate 2.2, the first guide rod 2.5 and the supporting rod 2.4 penetrate through and are in sliding fit, an end cap is arranged at the bottom of the first guide rod 2.5, the first elastic piece 2.3 is a first pressure spring, the first pressure spring is sleeved on the first guide rod 2.5, one end of the first pressure spring is in butt joint with the supporting rod 2.4, and the other end of the first pressure spring is in butt joint with the lower pressing plate 2.2. Specifically, the second elastic piece 3.6 is a second pressure spring, the second pressure spring is sleeved on the connecting rod 3.2, one end of the second pressure spring is abutted against the tool apron 3.4, and the other end is abutted against the corresponding upper pressing plate unit.
The following strokes are sequentially carried out in the sliding process of the linkage rod 5 relative to the rod piece 1: in the first stroke, the linkage rod 5 moves downwards relative to the rod piece 1 to drive the upper pressing plate assembly 3 to move downwards integrally, so that each upper pressing plate unit 3.1 presses molten polyurethane on the lower pressing plate 2.2 into polyurethane sheets, the lower pressing plate 2.2 is extruded to a concave station from a flat station, and the first elastic piece 2.3 stores energy; the second stroke, the linkage rod 5 moves downwards relative to the rod piece 1 to drive the cutter to move downwards relative to the lower pressing plate 2.2, so that the blade 3.5 cuts the polyurethane sheet into polyurethane particle blocks, the second elastic piece 3.6 stores energy, and the backing plate 4 moves to the stop limiting station; in the third stroke, the linkage rod 5 moves upwards relative to the rod piece 1 to drive the upper pressing plate assembly 3 to move upwards as a whole, and the elastic force of the first elastic piece 2.3 drives the lower pressing plate 2.2 to slide upwards relative to the die frame 2.1 to a flat station and keep abutting with the blade 3.5; in the fourth stroke, the linkage rod 5 moves upwards relative to the rod piece 1 to drive the upper pressing plate assembly 3 to move upwards integrally so as to be separated from the lower pressing plate 2.2.
In the technical scheme, according to the polyurethane sheet particle forming device provided by the invention, the linkage rod 5 moves downwards relative to the rod piece 1 to drive the upper pressing plate assembly 3 to move downwards integrally, the upper pressing plate assembly 3 presses the lower pressing plate 2.2 to enable the lower pressing plate 2.2 to slide downwards relative to the die frame 2.1, so that molten polyurethane in a space surrounded by the lower pressing plate 2.2, the inner peripheral side wall of the die frame 2.1 and the upper pressing plate is pressed into polyurethane sheets, and meanwhile, the first elastic piece 2.3 is also enabled to store energy; the linkage rod 5 moves downwards relative to the rod piece 1 to drive the cutter to move downwards relative to the lower pressing plate 2.2 so that the blade 3.5 cuts the polyurethane sheet into polyurethane particle blocks, meanwhile, the second elastic piece 3.6 is also stored with energy, and the backing plate 4 is inserted between the cutter holder 3.4 and the top plate 3.3 at the moment to prevent the second elastic piece 3.6 from releasing elasticity; then, the linkage rod 5 moves upwards relative to the rod piece 1 to drive the upper pressure plate assembly 3 to move upwards as a whole, the first elastic piece 2.3 releases elastic force to drive the lower pressure plate 2.2 to slide upwards relative to the die frame 2.1 to push the polyurethane particles out of the die frame 2.1, and the second elastic piece 3.6 cannot enable the blade 3.5 to retract into the gap of each upper pressure plate unit 3.1 due to the blocking of the base plate 4, so that the blade 3.5 is kept in a device for cutting polyurethane, the cooling and forming of the polyurethane particles are facilitated, and the adjacent polyurethane particles are prevented from being adhered together again after the blade 3.5 is retracted; the linkage rod 5 then continues to move upwardly relative to the rod 1 to urge the upper platen assembly 3 generally upwardly to disengage from the lower platen 2.2 and move away from the polyurethane pellet. According to the invention, the prepared polyurethane particle block is thinner, is easy to crush in subsequent processing, can be prepared into particle blocks with specific shapes by designing the shapes of the upper pressing plate unit 3.1 and the blade 3.5, is beneficial to product sales, can be cooled and shaped during and after the forming of the particle blocks, and has low cooling cost.
In another embodiment provided by the invention, the device further comprises a cooling tank 6 and a fixing frame 7 which are relatively and fixedly connected, the rod piece 1 is vertically arranged in a moving way relative to the fixing frame 7, after the first stroke is finished, the rod piece 1 moves downwards relative to the fixing frame 7 to drive the lower pressing plate assembly 2 and the upper pressing plate assembly 3 to integrally move downwards, so that polyurethane sheet materials are immersed into cooling liquid in the cooling tank 6, the underfloor dicing is easier to form, the cooling is fast, adhesion among polyurethane particle blocks is less, and the rod piece 1 moves upwards relative to the fixing frame 7 at the beginning of the fourth stroke. In this embodiment, when the upper surface of the lower platen 2.2 is above the liquid level, molten polyurethane is injected into the lower platen 2.2, and the process of granulating the molten polyurethane by the cooperation of the upper platen assembly 3 and the lower platen assembly 2 is performed under the liquid, so that the polyurethane particle block is convenient to form, the cooling and shaping block is convenient to cool, and the adhesion between the polyurethane particle blocks is less.
In another embodiment of the present invention, the extruder (not shown in the drawings) is further comprised, the die frame 2.1 is horizontally slidably connected to the rod member 1, and the lower platen assembly 2 has the following travel in the travel of the die frame 2.1 relative to the rod member 1: an alignment station for completely aligning the lower pressure plate 2.2 with the upper pressure plate, and a material injection station for staggering the lower pressure plate 2.2 with the upper pressure plate and for positioning the lower pressure plate 2.2 right below the extrusion head 8 of the extruder; in the first stroke, the lower platen assembly 2 is moved to an alignment station before the lower surface of the upper platen is below the upper surface of the frame 2.1; in the fourth pass the lower platen assembly 2 is switched from the alignment station to the injection station. In this embodiment, the injection of molten polyurethane onto the lower platen 2.2 by the extrusion head 8 can be facilitated without inserting the extrusion head 8 between the upper platen and the lower platen 2.2.
In the above embodiments and technical solutions, the active movement of each component may be an active driving device, where the active driving device includes a hydraulic device, an electric push rod, an air cylinder, or a linear motor, and other mechanisms capable of outputting linear reciprocating movement.
In a further preferred embodiment provided by the invention, the device further comprises a linkage mechanism, wherein the linkage mechanism comprises a sliding plate 9.1, a sliding column 9.3, a driving assembly, a gear 9.6, a first rack 9.7, a second rack 9.9, a third elastic piece 9.13, a first guide rail 9.14, a trigger piece 9.15, a fourth elastic piece 9.16 and a second guide rail 9.17, wherein the sliding plate 9.1 is vertically arranged on a fixed frame 7 in a sliding manner, the rod piece 1 is horizontally connected with the sliding plate 9.1 in a sliding manner, the sliding direction of the rod piece 1 and the sliding plate 9.1 is vertical to the sliding direction of the mould frame 2.1 and the rod piece 1, the sliding plate 9.1 is in a specific manner of vertically moving arrangement relative to the fixed frame 7, the sliding plate 9.1 is provided with a closed guide rail 9.2, and the guide rail 9.2 sequentially comprises a first vertical section 9.21, a first horizontal section 9.22, a first inclined transition section 9.23, a second horizontal section 9.24, a second inclined transition section 9.25, a third horizontal section 9.26, a fourth horizontal section 9.27, a fourth horizontal section 9.24, and a third horizontal section 9.28, and a fourth horizontal section 9.28 are sequentially connected with the first horizontal section 9.24; the sliding column 9.3 is rotationally connected with the linkage rod 5, and the sliding column 9.3 is movably arranged on the guide rail 9.2; the driving assembly is used for driving the sliding column 9.3 to move along the guide track 9.2, the sliding column 9.3 moves to drive the linkage rod 5 to move through the first vertical section 9.21 by a first stroke, the sliding movement drives the linkage rod 5 to move through the first inclined transition section 9.23 by a second stroke, the sliding movement drives the linkage rod 5 to move through the second inclined transition section 9.25 by a third stroke, and the sliding column 9.3 moves to drive the linkage rod 5 to move through the second vertical section 9.27 by a fourth stroke; the gear 9.6 is rotatably connected to the rod piece 1; the first rack 9.7 is fixedly connected relative to the linkage rod 5 and is meshed and matched with the gear 9.6; the second rack 9.9 is in sliding connection with the die frame 2.1 through a second connecting rod 9.10, the sliding direction is consistent with the sliding direction of the die frame 2.1 relative to the rod piece 1, both ends of the sliding stroke of the second connecting rod 9.10 relative to the die frame 2.1 are provided with limiting positions, the second connecting rod 9.10 is in magnetic attraction connection with the die frame 2.1 when sliding to the limited position relative to the die frame 2.1 from the direction of moving from the alignment station to the material injection station, and the die frame 2.1 is in magnetic attraction connection with the rod piece 1 when the lower pressure plate assembly 2 is positioned at the alignment station, and the second rack 9.9 is in meshed fit with the gear 9.6; the process of recovering the deformation of the third elastic piece 9.13 drives the backing plate 4 to slide to the stop limiting station; the first guide rail 9.14 is fixedly connected to the rod piece 1, and the first guide rail 9.14 sequentially comprises an inclined section 9.141 and a vertical guide section 9.142 which are connected from bottom to top; the trigger piece 9.15 is fixedly connected to the base plate 4, the sliding column 9.3 moves through the second vertical section 9.27 to drive the trigger piece 9.15 to be matched with the inclined section 9.141 and the vertical guide section 9.142 in sequence in a moving way, and the third elastic piece 9.13 is enabled to store energy; the elastic force of the fourth elastic element 9.16 always acts upwards on the sliding plate 9.1; the second guide rail 9.17 is fixedly connected with the fixing frame 7, the second guide rail 9.17 comprises an inclined guide section 9.171 and a waveguide section 9.172 connected with the inclined lower end of the inclined guide section 9.171, and the sliding column 9.3 is sequentially in sliding fit with the inclined guide section 9.171 and the waveguide section 9.172 in the process of moving through the first horizontal section 9.22, so that the sliding plate 9.1 moves downwards with respect to the fixing frame 7 and the fourth elastic piece 9.16 stores energy.
As a preferred technical scheme of the embodiment, the driving assembly comprises a servo motor 9.4 and a swinging rod 9.5, the swinging rod 9.5 is rotatably connected to a sliding plate 9.1 in an area surrounded by the guide rail 9.2, the swinging rod 9.5 is slidably connected with a sliding column 9.3 along the length direction of the swinging rod 9.5, and the servo motor 9.4 is fixedly arranged on the sliding plate 9.1 and used for driving the swinging rod 9.5 to rotate.
As a preferable technical scheme of the embodiment, the second connecting rod 9.10 and the mold frame 2.1 are respectively fixedly connected with a first magnetic block 9.11, and the two first magnetic blocks 9.11 can be in magnetic attraction fit; the die frame 2.1 and the rod piece 1 are respectively fixedly connected with a second magnetic block 9.12, and the two second magnetic blocks 9.12 can be in magnetic attraction fit.
As the preferred technical scheme of this embodiment, fixedly connected with second guide arm 4.1 on the blade holder 3.4, backing plate 4 slip wears to establish on second guide arm 4.1, and the both ends of second guide arm 4.1 can both carry out spacingly to backing plate 4's sliding travel, and third elastic component 9.13 is the third pressure spring, and the third pressure spring cover is established on second guide arm 4.1, and the one end that second guide arm 4.1 kept away from blade holder 3.4 of third pressure spring are connected, and the other end is connected with backing plate 4.
As a preferred technical scheme of the embodiment, a limiting block 7.1 is fixedly connected to the fixing frame 7, and the top of the sliding plate 9.1 is driven to abut against the limiting block 7.1 by the elastic force of the fourth elastic piece 9.16 during the period that the post rod is not in sliding fit with the second guide rail 9.17.
In this embodiment, the driving source has only one servo motor 9.4, and the servo motor 9.4 drives the swing rod 9.5 to continuously rotate in a single direction, so that the swing rod 9.5 drives the sliding column 9.3 to move along the guide track 9.2, and the rotation direction of the swing rod 9.5 is clockwise with reference to the view angle in fig. 6. When the sliding column 9.3 is positioned at the junction of the second vertical section 9.27 and the fourth horizontal section 9.28, referring to fig. 6-8, the lower pressing plate assembly 2 is positioned at the material injection station, namely, the lower pressing plate 2.2 is staggered with the upper pressing plate, the lower pressing plate 2.2 is positioned right below the extrusion head 8, the lower pressing plate 2.2 is positioned at the flat station relative to the die frame 2.1, the sliding plate 9.1 is abutted with the limiting block 7.1, and the upper surface of the lower pressing plate 2.2 is positioned above the liquid level; then the sliding column 9.3 slides along the fourth horizontal groove, and the sliding column 9.3 drives the rod piece 1, the linkage rod 5, the upper pressing plate assembly 3 and the lower pressing plate assembly 2 to move together, so that the lower pressing plate 2.2 passes through the lower part of the extrusion head 8, and the molten polyurethane extruded onto the lower pressing plate 2.2 by the extrusion head 8 is distributed in a linear shape, thereby being beneficial to uniform polyurethane distribution in the subsequent tabletting process; then the sliding column 9.3 is divided into a first section and a second section which are continuous in the process of sliding downwards along the first vertical section 9.21, in the first section, the sliding column 9.3 drives the upper pressing plate component 3 to move downwards through the linkage rod 5, meanwhile, the lower moving linkage rod 5 drives the first rack 9.7 to move downwards synchronously through the first connecting rod 9.8, the first rack 9.7 drives the gear 9.6 to rotate, the gear 9.6 drives the second rack 9.9 to move horizontally with the second connecting rod 9.10, as the second connecting rod 9.10 firstly drives the lower pressing plate component 2 to move to an alignment station, at the moment, the die frame 2.1 is abutted with the rod piece 1, and the second magnetic block 9.12 on the die frame 2.1 is magnetically attracted together with the second magnetic block 9.12 on the rod piece 1, the upper pressing plate is positioned right above the lower pressing plate 2.2, the lower pressing plate is connected in the second section, the sliding column 9.3 moves downwards in the first vertical section 9.21 to the first vertical section 9.21, the second rack 9.9.9 and the second connecting rod 9.10 is in parallel to the first vertical section, the second pressing plate 2.2.2.7 is abutted to the lower pressing plate 2.2.7, and the second pressing plate 2.2.2 is abutted to the lower pressing plate 2.2.2, and the second pressing plate 2.7 is abutted to the second magnetic block 2.2, and the two lower pressing plate 2.2 is abutted to the second magnetic block 2, and the second pressing plate 2.2.2 is abutted to the second 9.2, and the second pressing plate 2.2 is abutted to the lower pressing plate 2.2 and 2.2.2 and 2, the second position is 2 and 2, the lower pressing plate is 2 and the lower pressing plate 2 and 2.2 and 2 is 2 and 2; then the sliding column 9.3 slides along the first horizontal section 9.22, the sliding column 9.3 starts to be in sliding fit with the inclined guide section 9.171 of the second guide rail 9.17, so that the sliding plate 9.1 is driven to move downwards relative to the fixed frame 7, the sliding plate 9.1 drives the rod piece 1, the linkage rod 5, the lower pressure plate assembly 2 and the upper pressure plate assembly 3 to move downwards together, and the lower pressure plate 2.2 and the polyurethane sheet are immersed in cooling liquid, as shown in fig. 11; next, the sliding column 9.3 slides to the second horizontal section 9.24 through the first inclined section 9.141, meanwhile, the sliding column 9.3 also slides to the waveguide section 9.172 through the inclined guide section 9.171, referring to fig. 12-13, as the upper pressing plate where the polyurethane sheet exists cannot move down continuously, the sliding column 9.3 drives the cutter to move down continuously against the elastic force of the second elastic piece 3.6 through the linkage rod 5, the cutter 3.5 cuts the polyurethane sheet into polyurethane particle blocks, a gap is also formed between the cutter holder 3.4 and the top plate 3.3, the base plate 4 is inserted into the gap under the elastic force of the third elastic piece 9.13, namely, the base plate 4 moves to a corresponding station, meanwhile, the downward moving linkage rod 5 rotates through the first connecting rod 9.8, the first rack 9.7 and the gear 9.6, the second rack 9.10 translates through the transmission of the first connecting rod 9.8, and the second connecting rod 9.10 slides only relative to the die frame 2.1 to adapt to the first rack 9.7 due to the abutting of the die frame 2.1 and the limiting of the upper pressing plate to the die frame 2.1; then the sliding column 9.3 slides to the third horizontal section 9.26 through the second inclined section 9.141, referring to fig. 14, the sliding column 9.3 enables the upper pressing plate assembly 3 to move upwards through the connecting rod 3.2, the second elastic piece 3.6 enables the lower pressing plate 2.2 to move upwards to a horizontal station, at the moment, the upper pressing plate and the blade 3.5 still keep contact, so that polyurethane particles are fully exposed in cooling liquid to promote cooling, high-cost dry ice quenching is not needed, adhesion among the polyurethane particles is further prevented, sliding fit of the sliding column 9.3 and the waveguide section 9.172 enables the sliding plate 9.1, the rod piece 1, the linkage rod 5, the lower pressing plate assembly 2 and the upper pressing plate assembly 3 to reciprocate upwards and downwards, contact between the polyurethane particles and the cooling liquid is greatly promoted, adhesion between the polyurethane particles and the blade 3.5, the upper pressing plate and the lower pressing plate 2.2 is also facilitated, detachment between the polyurethane particles is prevented, meanwhile, the upper moving rod 5 is enabled to rotate through the first connecting rod 9.8, the first rack 9.7, the gear 9.6 and the second rack 9.9 is enabled to be in reverse fit with the second rack 9.9, and the second rack 9.10 is enabled to be in opposite direction to move, and the magnetic fit between the two opposite sides is enabled to be in a sliding fit with the connecting rod 2.9; when the sliding column 9.3 slides to the junction of the third horizontal section 9.26 and the second vertical section 9.27, the sliding column 9.3 is separated from the waveguide section 9.172, the elastic force of the fourth elastic unit is released, so that the sliding plate 9.1 moves upwards relative to the fixed frame 7, and the sliding plate 9.1 drives the rod piece 1, the linkage rod 5, the lower pressing plate assembly 2 and the upper pressing plate assembly 3 to move upwards together; next, referring to fig. 15-16, the sliding column 9.3 slides in the second vertical section 9.27, the sliding column 9.3 drives the upper pressing plate assembly 3 to move upwards through the linkage rod 5, the upper pressing plate assembly 3 is separated from the lower pressing plate assembly 2, meanwhile, the downward moving linkage rod 5 enables the second connecting rod 9.10 to translate reversely through the transmission cooperation of the first connecting rod 9.8, the first rack 9.7 and the gear 9.6, and the second rack 9.9, the first magnetic block 9.11 on the second connecting rod 9.10 is in contact with and magnetically attracted to the first magnetic block 9.11 on the mold frame 2.1, and then the second connecting rod 9.10 overcomes the magnetic attraction between the two second magnetic blocks 9.12 to push the lower pressing plate assembly 2 to slide away from the alignment station to the material injection station.
In the embodiment, the operation of the servo motor 9.4 causes the linkage cooperation among the parts of the linkage mechanism, so that the operations of automatic material receiving, die assembly and tabletting, coolant soaking, granulating, coolant separating and demoulding of the upper pressing plate are realized, and the upper pressing plate can be reset to perform periodic operation.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the invention, which is defined by the appended claims.
Claims (10)
1. A polyurethane pellet molding apparatus, comprising:
a rod piece;
the lower pressing plate assembly comprises a die frame, a lower pressing plate and a first elastic piece, the die frame is arranged on the rod piece, the lower pressing plate is vertically arranged in the die frame in a sliding mode, two ends of the sliding stroke of the lower pressing plate relative to the die frame are provided with limiting positions, the lower pressing plate is a flat station when sliding upwards relative to the die frame to be limited, the upper surface of the lower pressing plate is flush with the upper surface of the die frame in the flat station, the lower pressing plate is a concave station when sliding downwards relative to the die frame to be limited, and the elastic force of the first elastic piece acts upwards on the lower pressing plate;
the upper pressing plate assembly comprises an upper pressing plate, a cutter and a second elastic piece, wherein the upper pressing plate comprises a top plate and a plurality of upper pressing plate units which are arranged together, each upper pressing plate unit is fixedly connected to the top plate through a connecting rod, the cutter comprises a cutter seat and a cutter blade which are connected, the cutter seat is arranged on the connecting rod in a penetrating and sliding manner, the cutter blade is movably distributed in a gap between each upper pressing plate unit, and the elastic force of the second elastic piece acts on the cutter seat upwards;
the base plate is arranged on the tool apron or the top plate in a sliding way, and a stop limiting station inserted between the tool apron and the top plate is arranged in the sliding stroke of the base plate;
the linkage rod is fixedly connected with the tool apron, is vertically in sliding connection with the rod piece, and has the following strokes in sequence in the sliding process of the linkage rod relative to the rod piece: the first travel, the linkage rod moves down relative to the rod piece to drive the upper pressing plate assembly to move down integrally, so that each upper pressing plate unit presses molten polyurethane on the lower pressing plate into polyurethane sheet materials, the lower pressing plate is extruded to the concave station from the flat station, and the first elastic piece stores energy; the second stroke, the linkage rod moves down relative to the rod piece continuously to drive the cutter to move down relative to the lower pressing plate, so that the blade cuts the polyurethane sheet into polyurethane particle blocks, the second elastic piece stores energy, and the backing plate moves to the stop limiting station; the third stroke, the linkage rod moves upwards relative to the rod piece to drive the upper pressing plate assembly to move upwards integrally, and the elastic force of the first elastic piece drives the lower pressing plate to slide upwards relative to the die frame to a flat station and keep abutting with the blade; and in the fourth stroke, the linkage rod moves upwards relative to the rod piece to drive the upper pressing plate assembly to move upwards integrally so as to be separated from the lower pressing plate.
2. The polyurethane sheet particle forming device according to claim 1, further comprising a cooling tank and a fixing frame which are fixedly connected relatively, wherein the rod piece is vertically arranged in a moving manner relative to the fixing frame, the rod piece moves downwards relative to the fixing frame after the first stroke is finished so as to drive the lower pressing plate assembly and the upper pressing plate assembly to integrally move downwards, the polyurethane sheet material is immersed into cooling liquid in the cooling tank, and the rod piece moves upwards relative to the fixing frame to reset at the beginning of the fourth stroke.
3. The apparatus of claim 2, further comprising an extruder, wherein the die frame is slidably coupled to the rod member, and wherein the lower platen assembly has, in a stroke of movement of the die frame relative to the rod member: an alignment station for completely aligning the lower pressure plate with the upper pressure plate, and a material injection station for staggering the lower pressure plate from the upper pressure plate and for positioning the lower pressure plate under the extrusion head of the extruder; in the first stroke, before the lower surface of the upper pressing plate is lower than the upper surface of the die frame, the lower pressing plate assembly moves to an alignment station; and in the fourth stroke, the lower pressing plate assembly is switched from the alignment station to the material injection station.
4. A polyurethane pellet forming apparatus as claimed in claim 3 further comprising a linkage mechanism, said linkage mechanism comprising:
the sliding plate is vertically arranged on the fixing frame in a sliding manner, the rod piece is horizontally connected with the sliding plate in a sliding manner, the sliding plate is provided with a closed guide rail, the guide rail sequentially comprises a first vertical section, a first horizontal section, a first inclined transition section, a second horizontal section, a second inclined transition section, a third horizontal section, a second vertical section and a fourth horizontal section, which are connected with each other at first, the tail end of the fourth horizontal section is connected with the first end of the first vertical section, and the second horizontal section, the first horizontal section, the third horizontal section and the fourth horizontal section are sequentially heightened;
the sliding column is rotationally connected with the linkage rod and is movably arranged on the guide rail;
the driving assembly is used for driving the sliding column to move along the guide track, the sliding column moves to drive the linkage rod to move through the first vertical section by a first stroke, the sliding movement drives the linkage rod to move through the first inclined transition section by a second stroke, the sliding movement drives the linkage rod to move through the second inclined transition section by a third stroke, and the sliding column moves to drive the linkage rod to move through the second vertical section by a fourth stroke;
the gear is rotationally connected to the rod piece;
the first rack is fixedly connected with the corresponding linkage rod and meshed with the gear;
the second rack is connected with the mold frame in a sliding manner through a second connecting rod, the sliding direction of the second rack is consistent with that of the mold frame relative to the rod piece, both ends of the sliding stroke of the second connecting rod relative to the mold frame are provided with limiting positions, the second connecting rod is connected with the mold frame in a magnetic attraction manner when sliding to be limited from the direction of moving from the alignment station to the material injection station relative to the mold frame, and the mold frame is connected with the rod piece in a magnetic attraction manner when the lower pressure plate assembly is positioned at the alignment station and is meshed and matched with the gear;
the third elastic piece drives the backing plate to slide to the stop limiting station in the deformation recovery process;
the first guide rail is fixedly connected to the rod piece and sequentially comprises an inclined section and a vertical guide section which are connected from bottom to top;
the trigger piece is fixedly connected to the base plate, the sliding column moves through the second vertical section to drive the trigger piece to be matched with the inclined section and the vertical guide section in sequence in a moving way, and the third elastic piece stores energy;
the elastic force of the fourth elastic piece always acts on the sliding plate upwards;
the second guide rail is fixedly connected relative to the fixing frame and comprises an inclined guide section and a waveguide section connected with the inclined lower end of the inclined guide section, and the sliding column is sequentially in sliding fit with the inclined guide section and the waveguide section in the process of moving through the first horizontal section, so that the sliding plate moves downwards relative to the fixing frame and the fourth elastic piece stores energy.
5. The polyurethane pellet molding device as claimed in claim 4, wherein the driving assembly comprises a servo motor and a swing rod, the swing rod is rotatably connected to the sliding plate in the area surrounded by the guide rail, the swing rod is slidably connected to the sliding column along the length direction of the swing rod, and the servo motor is fixedly installed on the sliding plate for driving the swing rod to rotate.
6. The polyurethane pellet forming device according to claim 4, wherein the second connecting rod and the mold frame are respectively fixedly connected with a first magnetic block, and the two first magnetic blocks can be in magnetic attraction fit; the die frame and the rod piece are respectively fixedly connected with a second magnetic block, and the two second magnetic blocks can be in magnetic attraction fit.
7. The polyurethane pellet forming device according to claim 4, wherein the tool apron is fixedly connected with a second guide rod, the base plate is slidably arranged on the second guide rod in a penetrating manner, the third elastic piece is a third pressure spring, the third pressure spring is sleeved on the second guide rod, one end of the third pressure spring is connected with one end, far away from the tool apron, of the second guide rod, and the other end of the third pressure spring is connected with the base plate.
8. The polyurethane pellet molding device as claimed in claim 4, wherein a stopper is fixedly connected to the fixing frame, and the top of the sliding plate is driven to abut against the stopper by the elastic force of the fourth elastic member during the period that the post rod is not in sliding fit with the second guide rail.
9. The polyurethane pellet molding device according to claim 1, wherein the mold frame is fixedly connected with a supporting rod, the bottom of the lower pressing plate is fixedly connected with a first guide rod which is in sliding fit with the supporting rod, the bottom of the first guide rod is provided with an end cap, the first elastic piece is a first pressure spring, the first pressure spring is sleeved on the first guide rod, one end of the first pressure spring is abutted to the supporting rod, and the other end of the first pressure spring is abutted to the lower pressing plate.
10. The polyurethane pellet molding device according to claim 1, wherein the second elastic member is a second compression spring, the second compression spring is sleeved on the connecting rod, one end of the second compression spring is abutted against the tool apron, and the other end of the second compression spring is abutted against the corresponding upper pressing plate unit.
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| CN202311338558.6A CN117261024B (en) | 2023-10-17 | 2023-10-17 | Polyurethane sheet particle forming device |
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| CN202311338558.6A CN117261024B (en) | 2023-10-17 | 2023-10-17 | Polyurethane sheet particle forming device |
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| CN117261024B CN117261024B (en) | 2024-03-19 |
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