CN105922603A - Front wall sound isolation pad die integrating skin sucking, foaming and punching and production method of front wall sound isolation pad die - Google Patents
Front wall sound isolation pad die integrating skin sucking, foaming and punching and production method of front wall sound isolation pad die Download PDFInfo
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- CN105922603A CN105922603A CN201610523859.XA CN201610523859A CN105922603A CN 105922603 A CN105922603 A CN 105922603A CN 201610523859 A CN201610523859 A CN 201610523859A CN 105922603 A CN105922603 A CN 105922603A
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- die
- front wall
- foaming
- isolation pad
- wall sound
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
- B29C69/001—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore a shaping technique combined with cutting, e.g. in parts or slices combined with rearranging and joining the cut parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/58—Moulds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/10—Forming by pressure difference, e.g. vacuum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/30—Moulds
- B29C51/32—Moulds having cutting means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/58—Upholstery or cushions, e.g. vehicle upholstery or interior padding
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a front wall sound isolation pad die integrating skin sucking, foaming and punching and a production method of the front wall sound isolation pad die, and belongs to the technical field of automobile interior trim parts. The front wall sound isolation pad die comprises an upper die body and a lower die body. The upper die body is arranged above the lower die body and connected with the lower die body through a plurality of sets of guiding assemblies. The final product, namely, a front wall sound isolation pad integrating skin sucking, foaming and punching, is obtained through baking, heating, die treatment and aftertreatment, wherein die treatment sequentially comprises die sinking, adsorbing, die assembly punching, foaming and die sinking. According to the automobile front wall sound isolation pad produced through the die, the noise and heat transmission of an engine can be reduced, the comfort in a cab is improved, the design requirement for attractiveness and tidiness is met, and the production technology of the front wall sound isolation pad is simplified.
Description
Technical field
The present invention relates to a kind of front wall sound-isolation pad for automobile, be specifically related to a kind of play sound insulation, heat-blocking action, inhale skin and foam the front wall sound-isolation pad mould of die-cut one and production method thereof, belong to technical field of automotive upholstery.
Background technology
It is anterior that automobile front wall sound-isolation pad is installed on automobile cabin, the gadget of under-dash, play the feature such as sound insulation, heat-blocking action, increasingly pursuing high-performance, environment-friendly type, lightweight, the energy-saving epoch, automotive trim becomes people as car conour and selects a key factor of car, and therefore the requirement to automotive upholstery is more and more higher.In the production technology of existing front wall sound-isolation pad, general traditional handicraft is: EPDM dries temperature, EPDM adsorption forming, PU foaming, high pressure waterjet and product examination.Existing technique is primarily present problems with: 1, technological process is complicated；2, operator put into many；The problem such as 3, early stage product development equipment investment is many.
The present invention utilizes new technology to produce automobile front wall sound-isolation pad, preferably resolves the problems referred to above.
Summary of the invention
It is an object of the invention to overcome above-mentioned weak point, it is provided that a kind of front wall sound-isolation pad mould inhaling the skin die-cut one of foaming and production method thereof.
The technical scheme provided according to the present invention, inhales the front wall sound-isolation pad mould of the skin die-cut one of foaming, and including upper die body and lower mold body, upper die body is arranged at above lower mold body, and both are connected by some groups of guidance sets；
Described upper die body upper end is formed around several clamping grooves, and lower end is formed around fixing filler rod, is provided with some groups of built-in pressing plates on fixing filler rod；Being provided with back of the body chamber in upper die body, described back of the body intracavity is provided with sprue gate；The side of described lower mold body is provided with absorption interface, and die face is provided with several through holes.
Described guidance set includes the first guide pin bushing, guide pillar, the second guide pin bushing and cushion block；Described guide pillar upper end is cased with the first guide pin bushing, and lower end is cased with the second guide pin bushing, and cushion block is arranged at below guide pillar；Described first guide pin bushing is fixed on upper die body, and the second guide pin bushing is fixed in lower mold body, and guide pillar moves up and down with the first guide pin bushing, and adjusts the relative position between guide pillar and the second guide pin bushing by cushion block.
Described built-in pressing plate includes briquetting, fixing post and pressing plate；The bottom of described fixing post is arranged on pressing plate, and pressing plate is fixed on fixing filler rod；Briquetting is fixed on upper die body；Briquetting can move up and down along fixing post.
It is provided around some joint hinges at upper die body and lower mold body.It is equipped with waterway structure in described upper die body and lower mold body.
Described upper die body periphery is provided with edge of a knife insert, and die face is additionally provided with built-in fitting；It is additionally provided with exhaust cylinder in the back of the body chamber of upper die body.
The production method of the front wall sound-isolation pad of the described suction skin die-cut one of foaming, step is as follows:
(1) dry temperature: take raw material EPDM, send into network chain type drying oven and EPDM top and bottom are heated；Upper heating region is set as 290-310 DEG C, and lower heating region is set as 320-340 DEG C, and the baking temperature time is set as 70-80s；
(2) the front wall sound-isolation pad die treatment of the die-cut one of suction skin foaming:
A, die sinking: logical guidance set crosses upper die body and the lower mold body die sinking of the front wall sound-isolation pad mould to inhaling the skin die-cut one of foaming；Recirculated water is supplied to waterway structure；
B, absorption: the EPDM after step (1) gained being dried temperature by self-action network chain sends in the lower mold body of the front wall sound-isolation pad mould inhaling the skin die-cut one of foaming;Absorption interface is carried out evacuation, by several through holes, EPDM is tightly adsorbed on the die face of lower mold body；
C, matched moulds are die-cut: starting matched moulds, upper die body and lower mold body matched moulds complete, and are punched out EPDM by edge of a knife insert and built-in fitting；
D, foaming: start foaming machine, carry out foam-injection by sprue gate；Wherein, 1# filling gun head flow 480-520g/s, injection volume: 1580-1780g；2# filling gun flow 480-520g/s, injection volume: 1500-1700g；A material temperature degree: 16-20 DEG C；B material temperature degree: 18-22 DEG C；A charging basket pressure 2.2-2.6 kg/；B charging basket pressure: 2.2-2.6kg/；A material/B expects injection ratio: 0.37-0.43；A expects circular flow: 180-220g/s；B expects circular flow 80-120g/s；Mould burn close time 70-90s；
E, die sinking: open upper die body and lower mold body by guidance set, take out clout, further take out semi-finished product；
(3) post processing: be placed on the semi-finished product of step (2) gained on cooling and shaping tool, carries out cooling and shaping, removes the clout in hole punching position；Products obtained therefrom is checked, qualified after case warehouse-in, obtain product and inhale skin and foam the front wall sound-isolation pad of die-cut one.
Beneficial effects of the present invention: the automobile front wall sound-isolation pad that the present invention produces, can reduce the noise of electromotor and the transmission of heat, improves the comfortableness in driving cabin, meets beautiful and clean design requirement, simplify the production technology of front wall sound-isolation pad.
Accompanying drawing explanation
Fig. 1 is axonometric chart of the present invention.
Fig. 2 is front view of the present invention.
Fig. 3 is left view of the present invention.
Fig. 4 is Section A-A schematic diagram of the present invention.
Fig. 5 is upper die body schematic diagram of the present invention.
Fig. 6 is lower mold body schematic diagram of the present invention.
Description of reference numerals: 1, upper die body；2, lower mold body；3, guidance set；3-1, the first guide pin bushing；3-2, guide pillar；3-3, the second guide pin bushing；3-4, cushion block；4, clamping groove；5, built-in pressing plate；5-1, briquetting；5-2, fixing post；5-3, pressing plate；6, back of the body chamber；7, sprue gate；8, fixing filler rod；9, joint hinge；10, edge of a knife insert；11, built-in fitting；12, absorption interface；13, through hole；14, waterway structure.
Detailed description of the invention
Embodiment 1
As shown in figures 1 to 6: a kind of front wall sound-isolation pad mould inhaling the skin die-cut one of foaming, including upper die body 1 and lower mold body 2, upper die body 1 is arranged at above lower mold body 2, and both are connected by some groups of guidance sets 3.Guidance set 3 is fixed with bolt by alignment pin, is adjusted by pad cushion block and guarantees die clearance.
Described guidance set 3 includes the first guide pin bushing 3-1, guide pillar 3-2, the second guide pin bushing 3-3 and cushion block 3-4；Described guide pillar 3-2 upper end is cased with the first guide pin bushing 3-1, and lower end is cased with the second guide pin bushing 3-3, and cushion block 3-4 is arranged at below guide pillar 3-2；Described first guide pin bushing 3-1 is fixed on upper die body 1, and the second guide pin bushing 3-3 is fixed in lower mold body 2, and guide pillar 3-2 moves up and down with the first guide pin bushing 3-1, and adjusts the relative position between guide pillar 3-2 and the second guide pin bushing 3-3 by cushion block 3-4.
Described upper die body 1 upper end is formed around several clamping grooves 4, and lower end is formed around fixing filler rod 8, and fixing filler rod 8 is around the die face one week of upper die body 1；Fixing filler rod 8 is provided with some groups of built-in pressing plates 5；
Described built-in pressing plate 5 includes briquetting 5-1, fixing post 5-2 and pressing plate 5-3；The bottom of fixing post 5-2 is arranged on pressing plate 5-3, and pressing plate 5-3 is fixed on fixing filler rod 8；Briquetting 5-1 is fixed on upper die body 1；Briquetting 5-1 can move up and down along fixing post 5-2.
After matched moulds, lower mold body 2 is sealed, to coordinate lower mold body 2 to carry out EPDM adsorption operations by fixing filler rod 8 and some groups of built-in pressing plate 5 assemblies.
When upper die body 1 and the 2-in-1 mould of lower mold body, built-in pressing plate 5 assembly can form buffering to upper die body 1, buffers upper die body 1 by moving at fixing trace upper and lower for post 5-2 during briquetting 5-1 matched moulds；Being additionally provided with back of the body chamber 6 in described upper die body 1, the back of the body is provided with sprue gate 7 in chamber 6, is additionally provided with exhaust cylinder.
Described upper die body 1 periphery is provided with edge of a knife insert 10, and die face is additionally provided with built-in fitting 11.The shape of edge of a knife insert 10 is identical with the die face of upper die body 1, is positioned at the inside of fixing filler rod 8.In foaming process, EPDM waste material can be excised by edge of a knife insert 10, reduces follow-up high pressure waterjet operation, shorten product produce away from.
Upper die body 1 uses ZL-104 one piece casting, waterway structure 14 to use external diameter Φ 20/ internal diameter Φ 16 stainless pipe to cast after carrying out bending according to die back chamber shape, and water pipe spacing 65-75mm, three enter three goes out.
The side of described lower mold body 2 is provided with absorption interface 12, and die face is provided with several through holes 13.Lower mold body 2 ZL-104 one piece casting, waterway structure 14 uses external diameter Φ 20/ internal diameter Φ 16 stainless pipe to cast after carrying out bending according to die back chamber shape, and water pipe spacing 65-75mm, three enter three goes out.
Lower mold body 2 is carried on the back chamber and is used Seal Design, in order to mould carries out EPDM adsorption forming.And foaming mould and absorption mould were fabricated separately in the past, after EPDM has adsorbed, place foaming mould after being carried by special secondary school bin and carry out foaming.Now foaming mould is combined with absorption mould, effectively shorten product away from and mould input cost.
It is provided around some joint hinges 9 at upper die body 1 and lower mold body 2.It is equipped with waterway structure 14 in described upper die body 1 and lower mold body 2.
Similar products used adsorption forming in the past, and by middle bin carrying carrying foaming line, the semi-finished product adsorbed carry out high pressure waterjet after placing absorption mould foaming.The present invention is existing to combine adsorption forming with foaming, first carries out adsorption forming after mould die sinking, completes rear mold matched moulds and carries out operation of foaming.
Similar products carried out high pressure waterjet product profile and position, hole after using foaming in the past.The edge of a knife is embedded in die face by the present invention, carries out position, hole when mould matched moulds and profile is die-cut, and the edge of a knife can effectively carry out week side-seam cement simultaneously.
The position gas that product intermediate cavity was deeper in the past cannot effectively be discharged, and the present invention increases exhaust cylinder in upper die body back of the body chamber, can effectively carry out gas discharge, solves foaming pore problem.
The present invention completes to manufacture at mould and starts die trial and rise, progressively study by Chang'an PSA loading time node, entrucking confirmation until in the volume production transfer time, for solving the problem such as formed product, entrucking size coupling, mould has carried out many adjustment and amendment.Through repair a die adjustment and the confirmation of entrucking progressively repeatedly, product has met the state of cubing and has met entrucking demand.
Embodiment 2
The production method of the front wall sound-isolation pad of the described suction skin die-cut one of foaming, is characterized in that step is as follows:
(1) dry temperature: take raw material EPDM, send into network chain type drying oven and EPDM top and bottom are heated；Upper heating region is set as 290 DEG C, and lower heating region is set as 320 DEG C, and the baking temperature time is set as 80s；
(2) the front wall sound-isolation pad die treatment of the die-cut one of suction skin foaming:
A, die sinking: logical guidance set 3 crosses upper die body 1 and lower mold body 2 die sinking of the front wall sound-isolation pad mould to inhaling the skin die-cut one of foaming；Recirculated water is supplied to waterway structure 14；
B, absorption: the EPDM after step (1) gained being dried temperature by self-action network chain sends in the lower mold body 2 of the front wall sound-isolation pad mould inhaling the skin die-cut one of foaming；Absorption interface 12 is carried out evacuation, by several through holes 13, EPDM is tightly adsorbed on the die face of lower mold body 2；
C, matched moulds are die-cut: starting matched moulds, upper die body 1 and the 2-in-1 mould of lower mold body complete, and are punched out EPDM by edge of a knife insert 10 and built-in fitting 11；
D, foaming: start foaming machine, carry out foam-injection by sprue gate 7；Wherein, 1# filling gun head flow 480g/s, injection volume: 1580g；2# filling gun flow 480g/s, injection volume: 1500g；A material temperature degree: 16 DEG C；B material temperature degree: 18 DEG C；A charging basket pressure 2.2kg/；B charging basket pressure: 2.2kg/；A material/B expects injection ratio: 0.37；A expects circular flow: 180g/s；B expects circular flow 80g/s；Mould burn close time 90s；
E, die sinking: open upper die body 1 and lower mold body 2 by guidance set 3, take out clout, further take out semi-finished product；
(3) post processing: be placed on the semi-finished product of step (2) gained on cooling and shaping tool, carries out cooling and shaping, removes the clout in hole punching position；Products obtained therefrom is checked, qualified after case warehouse-in, obtain product and inhale skin and foam the front wall sound-isolation pad of die-cut one.
Embodiment 3
The production method of the front wall sound-isolation pad of the described suction skin die-cut one of foaming, is characterized in that step is as follows:
(1) dry temperature: take raw material EPDM, send into network chain type drying oven and EPDM top and bottom are heated；Upper heating region is set as 310 DEG C, and lower heating region is set as 340 DEG C, and the baking temperature time is set as 70s；
(2) the front wall sound-isolation pad die treatment of the die-cut one of suction skin foaming:
A, die sinking: logical guidance set 3 crosses upper die body 1 and lower mold body 2 die sinking of the front wall sound-isolation pad mould to inhaling the skin die-cut one of foaming；Recirculated water is supplied to waterway structure 14；
B, absorption: the EPDM after step (1) gained being dried temperature by self-action network chain sends in the lower mold body 2 of the front wall sound-isolation pad mould inhaling the skin die-cut one of foaming；Absorption interface 12 is carried out evacuation, by several through holes 13, EPDM is tightly adsorbed on the die face of lower mold body 2；
C, matched moulds are die-cut: starting matched moulds, upper die body 1 and the 2-in-1 mould of lower mold body complete, and are punched out EPDM by edge of a knife insert 10 and built-in fitting 11；
D, foaming: start foaming machine, carry out foam-injection by sprue gate 7；Wherein, 1# filling gun head flow 520g/s, injection volume: 1780g；2# filling gun flow 520g/s, injection volume: 1700g；A material temperature degree: 20 DEG C；B material temperature degree: 22 DEG C；A charging basket pressure 2.6 kg/；B charging basket pressure: 2.6kg/；A material/B expects injection ratio: 0.43；A expects circular flow: 220g/s；B expects circular flow 120g/s；Mould burn close time 70s；
E, die sinking: open upper die body 1 and lower mold body 2 by guidance set 3, take out clout, further take out semi-finished product；
(3) post processing: be placed on the semi-finished product of step (2) gained on cooling and shaping tool, carries out cooling and shaping, removes the clout in hole punching position；Products obtained therefrom is checked, qualified after case warehouse-in, obtain product and inhale skin and foam the front wall sound-isolation pad of die-cut one.
Embodiment 4
The production method of the front wall sound-isolation pad of the described suction skin die-cut one of foaming, is characterized in that step is as follows:
(1) dry temperature: take raw material EPDM, send into network chain type drying oven and EPDM top and bottom are heated；Upper heating region is set as 300 DEG C, and lower heating region is set as 330 DEG C, and the baking temperature time is set as 75s；
(2) the front wall sound-isolation pad die treatment of the die-cut one of suction skin foaming:
A, die sinking: logical guidance set 3 crosses upper die body 1 and lower mold body 2 die sinking of the front wall sound-isolation pad mould to inhaling the skin die-cut one of foaming；Recirculated water is supplied to waterway structure 14；
B, absorption: the EPDM after step (1) gained being dried temperature by self-action network chain sends in the lower mold body 2 of the front wall sound-isolation pad mould inhaling the skin die-cut one of foaming；Absorption interface 12 is carried out evacuation, by several through holes 13, EPDM is tightly adsorbed on the die face of lower mold body 2；
C, matched moulds are die-cut: starting matched moulds, upper die body 1 and the 2-in-1 mould of lower mold body complete, and are punched out EPDM by edge of a knife insert 10 and built-in fitting 11；
D, foaming: start foaming machine, carry out foam-injection by sprue gate 7；Wherein, 1# filling gun head flow 500g/s, injection volume: 1580-1780g；2# filling gun flow 480-520g/s, injection volume: 1500-1700g；A material temperature degree: 16-20 DEG C；B material temperature degree: 18-22 DEG C；A charging basket pressure 2.2-2.6 kg/；B charging basket pressure: 2.2-2.6kg/；A material/B expects injection ratio: 0.37-0.43；A expects circular flow: 200g/s；B expects circular flow 100g/s；Mould burn close time 80s；
E, die sinking: open upper die body (1) and lower mold body (2) by guidance set (3), take out clout, further take out semi-finished product；
(3) post processing: be placed on the semi-finished product of step (2) gained on cooling and shaping tool, carries out cooling and shaping, removes the clout in hole punching position；Products obtained therefrom is checked, qualified after case warehouse-in, obtain product and inhale skin and foam the front wall sound-isolation pad of die-cut one.
Claims (7)
1. inhaling a front wall sound-isolation pad mould for the skin die-cut one of foaming, it is characterized in that: include upper die body (1) and lower mold body (2), upper die body (1) is arranged at lower mold body (2) top, and both are connected by some groups of guidance sets (3)；
Described upper die body (1) upper end is formed around several clamping grooves (4), and lower end is formed around fixing filler rod (8), is provided with some groups of built-in pressing plates (5) on fixing filler rod (8)；Upper die body (1) is provided with back of the body chamber (6), is provided with sprue gate (7) in described back of the body chamber (6)；The side of described lower mold body (2) is provided with absorption interface (12), and die face is provided with several through holes (13).
2. inhale the front wall sound-isolation pad mould of the skin die-cut one of foaming as claimed in claim 1, it is characterized in that: described guidance set (3) includes the first guide pin bushing (3-1), guide pillar (3-2), the second guide pin bushing (3-3) and cushion block (3-4)；Described guide pillar (3-2) upper end is cased with the first guide pin bushing (3-1), and lower end is cased with the second guide pin bushing (3-3), and cushion block (3-4) is arranged at guide pillar (3-2) lower section；Described first guide pin bushing (3-1) is fixed on upper die body (1), second guide pin bushing (3-3) is fixed in lower mold body (2), guide pillar (3-2) moves up and down with the first guide pin bushing (3-1), and adjusts the relative position between guide pillar (3-2) and the second guide pin bushing (3-3) by cushion block (3-4).
3. inhale the front wall sound-isolation pad mould of the skin die-cut one of foaming as claimed in claim 1, it is characterized in that: described built-in pressing plate (5) includes briquetting (5-1), fixing post (5-2) and pressing plate (5-3)；The bottom of described fixing post (5-2) is arranged on pressing plate (5-3), and pressing plate (5-3) is fixed on fixing filler rod (8)；Briquetting (5-1) is fixed on upper die body (1)；Briquetting (5-1) can move up and down along fixing post (5-2).
4. inhale the front wall sound-isolation pad mould of the skin die-cut one of foaming as claimed in claim 1, it is characterized in that: described upper die body (1) periphery is provided with edge of a knife insert (10), die face is additionally provided with built-in fitting (11)；It is additionally provided with exhaust cylinder in the back of the body chamber (6) of upper die body (1).
5. inhale the front wall sound-isolation pad mould of the skin die-cut one of foaming as claimed in claim 1, it is characterized in that: described upper die body (1) and lower mold body (2) are provided around some joint hinges (9).
6. inhale the front wall sound-isolation pad mould of the skin die-cut one of foaming as claimed in claim 1, it is characterized in that: in described upper die body (1) and lower mold body (2), be equipped with waterway structure (14).
7. the production method of the front wall sound-isolation pad of the die-cut one of one of claim 1-6 described suction skin foaming, is characterized in that step is as follows:
(1) dry temperature: take raw material EPDM, send into network chain type drying oven and EPDM top and bottom are heated；Upper heating region is set as 290-310 DEG C, and lower heating region is set as 320-340 DEG C, and the baking temperature time is set as 70-80s；
(2) the front wall sound-isolation pad die treatment of the die-cut one of suction skin foaming:
A, die sinking: logical guidance set (3) crosses upper die body (1) and lower mold body (2) die sinking of the front wall sound-isolation pad mould to inhaling the skin die-cut one of foaming；Recirculated water is supplied to waterway structure (14)；
B, absorption: the EPDM after step (1) gained being dried temperature by self-action network chain sends in the lower mold body (2) of the front wall sound-isolation pad mould inhaling the skin die-cut one of foaming；Absorption interface (12) is carried out evacuation, by several through holes (13), EPDM is tightly adsorbed on the die face of lower mold body (2)；
C, matched moulds are die-cut: starting matched moulds, upper die body (1) and lower mold body (2) matched moulds complete, and are punched out EPDM by edge of a knife insert (10) and built-in fitting (11)；
D, foaming: start foaming machine, carry out foam-injection by sprue gate (7)；Wherein, 1# filling gun head flow 480-520g/s, injection volume: 1580-1780g；2# filling gun flow 480-520g/s, injection volume: 1500-1700g；A material temperature degree: 16-20 DEG C；B material temperature degree: 18-22 DEG C；A charging basket pressure 2.2-2.6 kg/；B charging basket pressure: 2.2-2.6kg/；A material/B expects injection ratio: 0.37-0.43；A expects circular flow: 180-220g/s；B expects circular flow 80-120g/s；Mould burn close time 70-90s；
E, die sinking: open upper die body (1) and lower mold body (2) by guidance set (3), take out clout, further take out semi-finished product；
(3) post processing: be placed on the semi-finished product of step (2) gained on cooling and shaping tool, carries out cooling and shaping, removes the clout in hole punching position；Products obtained therefrom is checked, qualified after case warehouse-in, obtain product and inhale skin and foam the front wall sound-isolation pad of die-cut one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610523859.XA CN105922603A (en) | 2016-07-04 | 2016-07-04 | Front wall sound isolation pad die integrating skin sucking, foaming and punching and production method of front wall sound isolation pad die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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Cited By (5)
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| CN108247938A (en) * | 2018-01-19 | 2018-07-06 | 广州市泰力高复合材料有限公司 | A kind of automobile front wall sound-isolation pad processing technology |
| CN109795129A (en) * | 2017-11-17 | 2019-05-24 | 上海新安汽车隔音毡有限公司 | A kind of foaming part processing unit (plant) having both sizing and cutting function |
| CN110315672A (en) * | 2019-07-11 | 2019-10-11 | 无锡市宏宇汽车配件制造有限公司 | A kind of preparation method of composite light quantization environmentally friendly vehicle inner and outer decorative parts |
| CN114012967A (en) * | 2022-01-07 | 2022-02-08 | 南通超达装备股份有限公司 | Car foaming mold utensil separates temperature protection system |
| CN115256662A (en) * | 2022-07-30 | 2022-11-01 | 泉州宏惠石业有限公司 | Noise-proof stone tablet cutting shed |
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| CN109795129A (en) * | 2017-11-17 | 2019-05-24 | 上海新安汽车隔音毡有限公司 | A kind of foaming part processing unit (plant) having both sizing and cutting function |
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| CN115256662A (en) * | 2022-07-30 | 2022-11-01 | 泉州宏惠石业有限公司 | Noise-proof stone tablet cutting shed |
| CN115256662B (en) * | 2022-07-30 | 2024-06-07 | 泉州宏惠石业有限公司 | Noise-proof stone tablet cutting shed |
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Application publication date: 20160907 |