CN104550433B - A kind of preparation method of punching press punch, its process for stamping and polyurethane rubber sleeve - Google Patents

A kind of preparation method of punching press punch, its process for stamping and polyurethane rubber sleeve Download PDF

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Publication number
CN104550433B
CN104550433B CN201410852972.3A CN201410852972A CN104550433B CN 104550433 B CN104550433 B CN 104550433B CN 201410852972 A CN201410852972 A CN 201410852972A CN 104550433 B CN104550433 B CN 104550433B
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CN
China
Prior art keywords
soft
arbitrarily
punch
polyurethane
rubber sleeve
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Application number
CN201410852972.3A
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Chinese (zh)
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CN104550433A (en
Inventor
濮建杭
黄元勋
张殿举
张俊
朱文德
陈卫波
林捷
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浙江盛达铁塔有限公司
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Priority to CN201410852972.3A priority Critical patent/CN104550433B/en
Publication of CN104550433A publication Critical patent/CN104550433A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00Shaping by press-cutting; Perforating
    • B21D28/24Perforating, i.e. punching holes
    • B21D28/34Perforating tools; Die holders
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00Shaping by press-cutting; Perforating
    • B21D28/24Perforating, i.e. punching holes
    • B21D28/243Perforating, i.e. punching holes in profiles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00Tools as parts of machines covered by this subclass
    • B21D37/01Selection of materials
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/482Drying adhesives, e.g. solvent based adhesives
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/52Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive

Abstract

The invention belongs to punching apparatus technical fields, it is related to a kind of punching press punch, cannot discharging timely be carried out to steel after punching press punch is completed to the perforating by punching of steel to solve existing fixed device for discharging, to the problem for keeping the precision in hole that steel have just punched impaired, the present invention provides a kind of punching press punches, including punch ontology, the punch further includes the polyurethane rubber sleeve being sleeved on punch ontology, bottom end of the bottom end of the polyurethane rubber sleeve at least below punch ontology, the polyurethane rubber sleeve includes soft set and is bonded in applying arbitrarily for soft set upper side, the hardness of soft set is 55A 60A, the hardness applied arbitrarily is 66A 70A, the present invention also provides a kind of process for stamping and the preparation methods of polyurethane rubber sleeve simultaneously, it fully can effective solution above-mentioned technical problem using technical solution provided by the present invention.

Description

A kind of preparation method of punching press punch, its process for stamping and polyurethane rubber sleeve

Technical field

The invention belongs to punching apparatus technical fields, are related to a kind of punching press punch, and the punching press punch can be used for each The punching press of kind steel, such as angle steel, except non-present invention illustrates, otherwise the steel of punching press punch of the present invention are usually The thickness of Q345 steel, steel is 3-10mm, and polyurethane rubber sleeve of the present invention can select the polyurethane rubber of any model Material is made, but precondition is at least that need to meet the present invention to soft set and apply arbitrarily the regulation in relation to hardness, soft set and hard The hardness of set indicates that VIPS is three isopropyl alkenyloxy group vinyl silicane coupling agents, and TDI is toluene diisocynate with shore hardness Ester, TMP are metopycide.

Background technology

Steel are the raw material of various industrial products, expect finished industrial product from former material, need to carry out various processing to steel, It is exactly a kind of common steel processing method to be punched out punching press to steel, when technical staff is processed steel, often will Steel are placed in diel, then make punch perforating by punching down.

However, punch and the making precision of diel be there are certain limit, what punch had just punched after the completion of punching press There is stronger extruding force in hole to punch, and therefore, when punch is retracted, steel can be transported with the direction that punch is retracted to punch together Operation dynamic, that technical staff usually moves the direction for preventing steel from retracting together to punch with punch after the completion of punching press Journey is known as discharging.

The method that the direction for preventing steel from retracting to punch with punch after the completion of punching press at present moves is to install additional admittedly Determine device for discharging, the characteristics of this kind of device has stripping force big, reliable operation, but fixed device for discharging is because facilitating steel to adjust The requirement of stamping position is not easy to directly bear against on steel, but is usually located at the top of steel, and specific discharging principle is to allow Punch, which is retracted, drives steel, and falls off from punch after so that steel is touched fixed device for discharging, it is clear that is unloaded in fixed device for discharging Have occurred that steel are retracted with punch with cephalomotor event is rushed when material, steel squeeze punch because of its own gravity and punching The collective effect of pressure is unable to ensure the angle that parallel with position when punching press such as common situation is steel and punch Constitute acute angle, this with punch to steel punching press when both situation in 90 ° be it is distinguishing, to cause the steel just punched rush The precision in hole is damaged (usual punching can be widened), in addition, fixing device for discharging in discharging because colliding with steel, generates Noise also can not be ignored.

Invention content

The technical problem to be solved in the invention is that existing fixed device for discharging rushes steel in the completion of punching press punch Cannot discharging timely be carried out to steel after pressure punching, to keep the precision in hole that steel have just punched impaired, solve the problems, such as this A kind of thinking be it is other find a component that can substitute fixed device for discharging, such as will can directly need the steel of punching It is fixed on perforating mold, then starts punch and steel are punched out, and after punching, by the portion of the fixed steel Part is dismantled, and steel are further taken out, although directly by the fixed mode of steel can be satisfied solution steel are punched behind hole and When discharging the problem of, but technical staff has to face a new problem, i.e., often rushes a hole, need the portion to fixed steel Part carries out fixed and dismantlement work at least once, for the punching operation of those needs primary multiple punchings of property on steel, work Make efficiency obviously by strong influence, in addition, the accurate calibration of steel punching position also will be that technical staff is unaffordable Physical work.

It is proposed that directly device for discharging is directly installed on existing stamping equipment component, one done so is good Place be need not it is additional be that stamping equipment adds component, the present invention more suggests directly changing the component of existing stamping equipment Into making improved component have the function of instant discharging.

Simple structure in stamping equipment can be selected and cover upper elasticity on punch as improved component, such as punch The bottom end of resilient sleeve, is arranged below the position of punch bottom end, in punching press, resilient sleeve bottom is at least same with punch ontology by set Step resists steel, and steel are applied with certain pressure, and the pressure can prevent steel moment before punch punching press from occurring Position offset, at least ensure that the precision of punching punching press eliminates hidden danger, and after punching press, the pressure can contend with The drive that punch ontology retracts and steel is driven to be moved to punch ontology retracted orientation, as long as technical staff adjusts pressure, example Pressure is more than the maximum value possible of the drive as described in making, so that it may so that steel timely discharging after punching hole.

For this purpose, in some embodiments of the invention, providing a kind of punching press punch, including punch ontology, the punch is also Including the spring being sleeved on punch ontology, the bottom end of the bottom end of the spring at least below punch ontology.In some of the present invention In embodiment, the spring is replaced by air cushion.

Although spring and air cushion can help the present invention to obtain certain discharging effect, undeniable general spring can carry The elastic force of confession is limited, can not be competent at the unloading work compared with steel plate, the spring for selecting elastic force larger, such as butterfly spring, although Larger stripping force can be provided, but its axial deformation is smaller, inconvenient for use, air cushion is generally used for stretching die, and tonnage is larger, Input cost is larger, can not large-scale promotion.

In contrast, in some currently preferred embodiments of the present invention, a kind of punching press punch, including punch ontology are provided, The punch further includes the polyurethane rubber sleeve being sleeved on punch ontology, and the bottom end of the polyurethane rubber sleeve is at least below punch sheet The bottom end of body.Polyurethane rubber sleeve is capable of providing larger elastic force pressure, and intensity is high, and deflection is larger, and fatigue strength is also larger, at This is relatively low, easy to process.

In general, polyurethane rubber sleeve can temporarily meet timely discharging of the steel after punching hole, but repeatedly rushing Kong Hou, there is the trend to punch ontology upper end shift position, the trend to make the bottom of polyurethane rubber sleeve for polyurethane rubber sleeve End can not remain below the punching press end of punch ontology or ensure to maintain an equal level with punching press end bottom end.It can not thus prevent The position offset that steel occur in punch punching press steel moment, steel itself, to ensure that punching precision, technical staff have to borrow Ensure that the position before stamping of steel is fixed with other component, to make the intent of the present invention part fall through.

In addition, the service life of polyurethane rubber sleeve is also troubling, after Multi-step forming, it may occur that rubber sleeve breaks It splits, this phenomenon is especially apparent at the position that rubber sleeve often stretches.The material of integrated regulation polyurethane rubber sleeve can solve One in the above problem, and the adjustment of material, it will largely change the unloading performance of polyurethane rubber sleeve, based on above-mentioned Consider, it is preferred that the polyurethane rubber sleeve, which is set as separate structure, and the technological deficiency that polyurethane rubber sleeve is showed can be by It goes to overcome positioned at the part of polyurethane rubber sleeve different parts, such as the polyurethane rubber sleeve includes soft set and is bonded in soft set Upper end is applied arbitrarily, in this way, during squeezing polyurethane rubber sleeve, although the trend that soft set bends will be bigger than applying arbitrarily, But its preferable bending resistance can adapt it to such work, apply arbitrarily closer to rigid, stretching is applied arbitrarily need to Want more external force.Polyurethane rubber sleeve including soft set and including applying arbitrarily generally has certain hardness, hardness be 50A with On polyurethane rubber sleeve certain unloading performance can be provided, it is generally more satisfactory.

In fact, the hardness of soft set of the present invention is 55A-60A, the hardness applied arbitrarily is 66A-70A.The function of soft or hard set Comparable discrimination will be had, when squeezing polyurethane rubber sleeve, the soft or hard respective function of set obtains good performance.

As a preferred embodiment, the hardness of the soft set is 56A-58A, the hardness applied arbitrarily is 68A-69A, as a kind of excellent The hardness of choosing, the soft set is 56A, and the hardness applied arbitrarily is 68A.

For hardness is the soft set of 55A-60A, need the thickness control by soft set in 25mm-36mm, so that it has There is a good unloading performance, while being not easy of will not becoming because of blocked up is extruded and generates smaller extruding distance, To which the adverse effect that the soft set hardness of partial offset is given in this respect is usually recognized in the length selection of polyurethane rubber sleeve For under identical material longer polyurethane rubber sleeve compared with shorter polyurethane rubber sleeve have bigger unloading performance, it is soft set and The part for merely comprising polyurethane rubber sleeve is applied arbitrarily, respective length is shorter, the polyurethane rubber sleeve for possessing separate structure Unloading performance it is obviously troubling.But in fact, there is no stringent meaning with the length of soft or hard set in the unloading performance of soft or hard set Proportional relationship in justice, such as the soft set that thickness is 25mm-36mm, if controlling the length of soft set in 10mm-20mm, Its maximum stripping force will be maintained at high-level range (being indicated with unit pressure when soft set discharging, be 2.5Mpa-3.0Mpa), into one Step lengthens the length of soft set, and maximum stripping force base growth is few, causes lower technical benefits.

For the present invention it has furthermore been found that for the soft set cited by the present invention, it can just be made by needing to be expressed to reasonably distance Maximum stripping force is played, the distance is usually the 35%-45% of the soft set length.As soft set, apply arbitrarily by Also it will produce extruding distance when extruding, but the softer set of extruding distance for applying arbitrarily generation is small, and the soft set of different squeezed states And apply arbitrarily respectively increase unit squeeze distance after, institute increased stripping force size be it is visibly different (in general, merely Polyurethane rubber is sleeved on be squeezed after, unit extruding generally first increase apart from generated stripping force increment reduces afterwards).

On this basis, the present invention is desired to when soft set is squeezed, make the extruding distance controlling of soft set described soft The 35%-45% of length is covered, and meets the extruding distance punch ontology described enough of polyurethane rubber sleeve entirety to the present invention The thickness of steel product of defined is punched out, if by it is described apply arbitrarily length and be arranged in 12mm-26mm above-mentioned technology mesh can be realized Mark.

Certainly, on the implementation one section of technical solution when, inevitably there is such a bad phenomenon, that is, work as The extruding distance of soft set be more than play its maximum stripping force it is required squeeze apart from when, applying arbitrarily will be forced to receive harmful extruding (it is i.e. harmful to squeeze distance, it applies arbitrarily when receiving extruding, if squeezing distance is less than harmful extruding distance, applies arbitrarily itself substantially not Have damage, and if it exceeds harmful extruding distance, then can in itself damage to applying arbitrarily) or soft set extruding away from From be less than play that its maximum stripping force is required and squeeze with a distance from when, apply arbitrarily and be forced to receive harmful extruding.For hard The relatively soft set of degree is larger apply arbitrarily for, it is exactly after using the short period, firmly to receive harmful common adverse consequences squeezed Set outer surface just will appear obvious crackle, these crackles further can be deepened and extend, and larger crackle is gradually formed, Greatly weaken the stripping force applied arbitrarily and service life.

It avoids applying arbitrarily the technical solution for receiving harmful extruding the present invention provides a kind of, i.e., will apply arbitrarily and receive harmful squeeze The soft set is just set to give full play to maximum stripping force before, as long as such technical staff passes through the technical parameter of soft set (such as soft set Length, thickness and maximum stripping force) when the steel to different-thickness are punched out, suitable soft set is selected, is not had to Worry is applied arbitrarily, and harmful extruding may occur when receiving extruding, and specific scheme is to carry out soft set and the length applied arbitrarily such as Lower setting:

The length of soft set The length applied arbitrarily 10mm-12mm 12mm-16mm 13mm-17mm 17mm-20mm 18mm-20mm 21mm-26mm

Those skilled in the art be obtain that a variety of different methods may be used when polyurethane rubber sleeve of the present invention, but Most easy method is by soft set and to apply arbitrarily and bind, to generate the Bonded Ring for bonding soft set and applying arbitrarily, before this invention, The Bonded Ring is generally made of conventional polyurethanes adhesive, but at least needs to hold in view of polyurethane rubber sleeve of the present invention Material unloading function is carried on a shoulder pole, stretching, extension can be repeatedly extruded, even if the conventional polyurethanes adhesive is still easy several in experience by handling After secondary extruding stretching, extension, cracks up to fracture, weaken the unloading performance of polyurethane rubber sleeve, it is soft to cover and apply arbitrarily just after fracture At separate structure, entire polyurethane rubber sleeve is also eliminated.The firmness of Bonded Ring is at restriction polyurethane as a result, The performance of the normal effect of rubber sleeve and the key factor for maintaining its Long Service Life.

The present invention provides a kind of Bonded Ring for those skilled in the art, the Bonded Ring cured by adhesive for polyurethane and At the adhesive for polyurethane includes that TDI is modified polyethylene glycol adipate, TDI-TMP addition products and VIPS, the TDI The weight ratio of modified polyethylene glycol adipate and TDI-TMP addition products is 5.1-5.5: 1.1-1.4, VIPS in polyurethane gluing Mass percent concentration in agent is 0.51%-0.55%.The Bonded Ring can play its excellent technique effect, such as will The Bonded Ring is for cohering soft set of the present invention and applying arbitrarily, the peel strength (90 ° of strippings) of the polyurethane rubber sleeve of formation At least 3546.51N/m.

As a preferred embodiment, soft set selects thermoplastic polyurethane, such as full thermoplastic polyurethane or half thermoplastic polyurethane, It applies arbitrarily and selects casting type polyurethane or blending-type polyurethane, the peel strength (90 ° of strippings) of the polyurethane rubber sleeve is at least For 3612.76N/m.

Description of the drawings

Fig. 1 is the structural schematic diagram of punching press punch described in embodiment 1.

Specific implementation mode

In Summary, there is no the solidifications of set soft to bonding and the polyurethane adhesive applied arbitrarily to make into one by the present invention Step explanation in fact, those skilled in the art can readily find related cured method, and obtains corresponding technology effect Fruit, but the peel strength of obtained polyurethane rubber sleeve is difficult further to be promoted, and present embodiment introduces a kind of poly- ammonia The preparation method of ester rubber sleeve, this method the peel strength of the polyurethane rubber sleeve (90 ° of strippings) can at least be improved to 3798.48N/m, this method include:

A, the preparation process of surface conditioning agent;

B, the configuration step of adhesive for polyurethane;

C, the adhesion step with soft set is applied arbitrarily;

The a steps include the steps that trichloroisocyanuric acid and ethyl acetate are mixed to form surface conditioning agent;

The b step includes that TDI is modified polyethylene glycol adipate to be mixed to form mixture with TDI-TMP addition products Step and into mixture add VIPS to form adhesive for polyurethane the step of;

The step c includes the steps that by soft set and applying arbitrarily viscose face difference feather plucking;

The step of to soft set and applying arbitrarily viscose face sprayed surface inorganic agent;

To soft set and apply arbitrarily the step of adhesive for polyurethane is brushed in gluing face;

And by soft set and the step of apply arbitrarily gluing face adhering and solidifying;

It is 5.1-5.5: 1.1-1.4 that the TDI, which is modified polyethylene glycol adipate and the weight ratio of TDI-TMP addition products, Mass percent concentrations of the VIPS in adhesive for polyurethane is 0.51%-0.55%, the trichloroisocyanuric acid and second The weight ratio of acetoacetic ester is 10.5-11.0: 89.0-89.5.

Further, in some embodiments of the invention, described to cover and apply arbitrarily gluing face brushing polyurethane gluing to soft The step of agent includes:

For the first time the step of adhesive for polyurethane is brushed in gluing face is covered and applies arbitrarily to soft;

For the first time the step of gluing face is toasted is covered and applies arbitrarily to soft;

For the second time the step of adhesive for polyurethane is brushed in gluing face is covered and applies arbitrarily to soft;

For the second time the step of gluing face is toasted is covered and applies arbitrarily to soft;

The first time is to soft set and applies arbitrarily in the step of adhesive for polyurethane is brushed in gluing face, the brush of adhesive for polyurethane Painting thickness is 0.5mm-1.1mm, and described second to soft set and applies arbitrarily in the step of adhesive for polyurethane is brushed in gluing face, poly- ammonia The brushing thickness of ester adhesive is 1.2mm-2.3mm.

In some embodiments of the invention, the first time to soft set and applies arbitrarily in the step of gluing face is toasted, Baking temperature is 49 DEG C -51 DEG C, baking time 3-5min, to soft set and applies arbitrarily the step toasted in gluing face described second In rapid, baking temperature is 49 DEG C -51 DEG C, baking time 9-11min.

The length of the Bonded Ring made of adhesive for polyurethane can be controlled in 4mm hereinafter, this is for soft set and applies arbitrarily The effect that polyurethane rubber sleeve receives to be played when squeezing will not have an impact substantially, while test discovery, by adhesive for polyurethane Brush solidification at twice, can further by the peel strength of the polyurethane rubber sleeve (90 ° stripping) at least improve to 4025.21N/m, for the soft temperature covered and apply arbitrarily gluing face adhering and solidifying, technical staff can refer to the prior art and select, but this The temperature that invention is recommended is 120 DEG C, and the peel strength (90 ° of strippings) which can further improve polyurethane rubber sleeve at least carries Up to 4092.34N/m.

It is of the present invention each that polyurethane rubber sleeve of good performance can largely help technical staff to realize Kind technique effect, these contents have had in Summary to be largely related to, such as the present invention is special in Summary A kind of technical solution for preventing from applying arbitrarily the harmful extruding of generation is referred to, i.e., will apply arbitrarily before receiving harmful extruding fills just soft set Maximum stripping force is waved in distribution, although technical staff can be according to some prompts of Summary to soft set and the length applied arbitrarily It is reasonably matched, and soft set is squeezed into distance controlling in the soft 35%-45% for covering length, but in many cases, Control rough in this way will produce larger error, to accidentally cause harmful extruding, this specific implementation to applying arbitrarily Another task of mode is just to provide a kind of process for stamping of punching press punch, and this method includes:

1., material steel is placed on the punch die equipped with the punching opposite with the punch;

2., punch undershoot, it is the compression distance of soft set and the sum of the compression distance applied arbitrarily so that punch is poured the distance of punching, The compression distance of the soft set and the extruding distance applied arbitrarily are determined according to following table:

The length of soft set The extruding distance of soft set The length applied arbitrarily The extruding distance applied arbitrarily 10mm-12mm 5mm-6mm 12mm-16mm 4mm-7mm 13mm-17mm 6mm-8mm 17mm-20mm 5mm-8mm 18mm-20mm 8mm-10mm 21mm-26mm 7mm-11mm

3., punch withdraw the step of.

It is executed according to the process for stamping, harmful extruding to applying arbitrarily can be avoided the occurrence of, technical staff can be easy The mechanism of adjusting control punch punching press distance, such as hydraulic cylinder, cylinder and piston type stretching structure, by the punching press distance of punch It controls and squeezes distance in soft set and apply arbitrarily the range of extruding sum of the distance, while reaching the maximum of polyurethane rubber sleeve stripping force Change, such as when the length of soft set is 10mm-12mm, the stripping force of polyurethane rubber sleeve is indicated with unit pressure, is 2.6Mpa- 2.9Mpa, when the length of soft set is 13mm-17mm, polyurethane rubber sleeve stripping force is indicated with unit pressure, is 2.7Mpa- 3.0Mpa, when the length of soft set is 18mm-20mm, polyurethane rubber sleeve stripping force is indicated with unit pressure, is 2.8Mpa- 3.0Mpa。

Embodiment 1

The polyurethane rubber sleeve seen Fig. 1, a kind of punching press punch, including punch ontology and be sleeved on punch ontology, poly- ammonia Ester rubber sleeve includes applying arbitrarily 3, soft set 4 and bonding the Bonded Ring 5 for applying arbitrarily 3 and soft set 4, punch ontology include ram post 1 and The baffle 2 being connect with 1 top of ram post, the polyurethane rubber sleeve are sleeved in ram post 1, the bore of the baffle 2 compared with Ram post 1 is big, therefore 2 bottom surface of baffle is in addition to part applies arbitrarily 3 for other than connecting with ram post 1, also partly constituting to keep out Keep out face.

The soft set 4 is made of hardness of the full thermoplastic polyurethane of 57A, length 13mm, and it is 69A to apply arbitrarily 3 by hardness Casting type polyurethane be made, length 17mm, the thickness of entire polyurethane rubber sleeve is 29mm.

Bonded Ring 5 is to be cured by adhesive for polyurethane, and adhesive for polyurethane includes that TDI is modified polyadipate ethylene glycol Ester, TDI-TMP addition products and VIPS, the weight ratio that the TDI is modified polyethylene glycol adipate and TDI-TMP addition products are The mass percent concentration of 5.3: 1.2, VIPS in adhesive for polyurethane is 0.53%.

The present embodiment is proposed with following method and prepares polyurethane rubber sleeve:

The trichloroisocyanuric acid that weight ratio is 10.8: 89.3 is mixed with ethyl acetate, formation surface conditioning agent is for use, so The TDI that weight ratio is 5.3: 1.2 is modified polyethylene glycol adipate afterwards to mix with TDI-TMP addition products, then is modified and gathers to TDI VIPS is added in the mixture of ethylene glycol adipate and TDI-TMP addition products, makes the mass percent concentration of VIPS be 0.53%, to which adhesive for polyurethane be made.

Soft set gluing face and gluing face feather plucking is applied arbitrarily, then to soft set gluing face and gluing face respectively sprayed surface is applied arbitrarily Inorganic agent, after the completion again to the soft adhesive for polyurethane for covering gluing face and apply arbitrarily gluing face brushing 1mm thickness, then by soft set and firmly Set is put into baking oven and toasts 4min, and baking temperature is set in 50 DEG C, and to soft set gluing face and gluing is applied arbitrarily again after baking The adhesive for polyurethane of 2mm thickness is brushed in face, is then covered by soft and is applied arbitrarily to be put into baking oven and toast 10min, baking temperature is set in 50 DEG C, baking, which terminates after-applied external force, makes soft set gluing face mutually be binded with gluing face is applied arbitrarily, at the same to it is soft cover 4 and apply arbitrarily 3 it Between bonding part carry out 2h and be heating and curing, control solidification temperature is 120 DEG C.Above-mentioned soft set 4 and apply arbitrarily bonding part between 3 i.e. For Bonded Ring 5.The peel strength (90 ° of strippings) of the obtained polyurethane rubber sleeve of the present embodiment is 4156.78N/m.

Embodiment 2-4

Embodiment 2-4 is substantially the same manner as Example 1, the difference is that soft set length and hardness, applying arbitrarily length and hardness With the thickness of polyurethane rubber sleeve, in embodiment 2-4, the hardness of soft set is 56A, and the hardness applied arbitrarily is 68A, and following table reflects Soft set length in embodiment 2-4 applies arbitrarily the case where length and polyurethane rubber sleeve thickness.

Embodiment The length of soft set The length applied arbitrarily The thickness of polyurethane rubber sleeve 2 11mm 13mm 25mm 3 15mm 18mm 27mm 4 19mm 22mm 30mm

Embodiment 5-7

Polyurethane rubber sleeve described in embodiment 2-4 is respectively inserted in ram post respectively, diagonal steel is punched out:First will Angle steel is placed on the punch die opposite with ram post, and the stretching structure of driving punch entirety undershoot is then adjusted according to following table, is made The undershoot distance of punch is equal with soft set and the extruding sum of the distance applied arbitrarily.

Then diagonal steel is punched out, and withdraws entire punch after punching hole.

The stripping force of polyurethane rubber sleeve described in embodiment 5-7 is reflected by following table.

Embodiment Polyurethane rubber sleeve stripping force (expression of unit pressure) 5 2.7Mpa 6 2.8Mpa 7 3.0Mpa

Claims (10)

1. a kind of punching press punch, including punch ontology, it is characterised in that the punch further includes being sleeved on punch ontology to be used for steel The polyurethane rubber sleeve of material punching discharging, the punch ontology include ram post and the baffle that is connect with punch top end, Baffle bottom surface portions composition keeps out the face of keeping out applied arbitrarily, the bottom of the bottom end of the polyurethane rubber sleeve at least below punch ontology End, the polyurethane rubber sleeve include soft set and are bonded in applying arbitrarily for soft set upper side, and the hardness of soft set is 55A-60A, is applied arbitrarily Hardness be 66A-70A.
2. a kind of punching press punch according to claim 1, it is characterised in that the thickness of soft set is 25mm-36mm, described soft The length of set is 10mm-20mm.
3. a kind of punching press punch according to claim 2, it is characterised in that the length applied arbitrarily is 12mm-26mm.
4. a kind of punching press punch according to claim 2 or 3, it is characterised in that the length of the soft set and the length applied arbitrarily It is as follows:
5. a kind of punching press punch according to claim 1, it is characterised in that the polyurethane rubber sleeve further includes cohesive soft The Bonded Ring for covering and applying arbitrarily, the Bonded Ring are cured by adhesive for polyurethane, and the adhesive for polyurethane includes that TDI is modified Polyethylene glycol adipate, TDI-TMP addition products and VIPS, the TDI are modified polyethylene glycol adipate and add with TDI-TMP It is 0.51%- that weight ratio at object, which is mass percent concentrations of 5.1-5.5: 1.1-1.4, the VIPS in adhesive for polyurethane, 0.55%.
6. the preparation method of polyurethane rubber sleeve in a kind of punching press punch as claimed in claim 5, including:
A, the preparation process of surface conditioning agent;
B, the configuration step of adhesive for polyurethane;
C, the adhesion step with soft set is applied arbitrarily;
The a steps include the steps that trichloroisocyanuric acid and ethyl acetate are mixed to form surface conditioning agent;
The b step includes the steps that TDI is modified polyethylene glycol adipate to be mixed to form mixture with TDI-TMP addition products And the step of VIPS is to form adhesive for polyurethane is added into mixture;
The step c includes the steps that by soft set and applying arbitrarily viscose face difference feather plucking;
The step of to soft set and applying arbitrarily viscose face sprayed surface inorganic agent;
To soft set and apply arbitrarily the step of adhesive for polyurethane is brushed in gluing face;
And by soft set and the step of apply arbitrarily gluing face adhering and solidifying;
It is 5.1-5.5: 1.1-1.4 that the TDI, which is modified polyethylene glycol adipate and the weight ratio of TDI-TMP addition products, described Mass percent concentrations of the VIPS in adhesive for polyurethane is 0.51%-0.55%, the trichloroisocyanuric acid and acetic acid second The weight ratio of ester is 10.5-11.0: 89.0-89.5.
7. the preparation method of polyurethane rubber sleeve in punching press punch according to claim 6, it is characterised in that it is soft set and Applying arbitrarily the step of adhesive for polyurethane is brushed in gluing face includes:
For the first time the step of adhesive for polyurethane is brushed in gluing face is covered and applies arbitrarily to soft;
For the first time the step of gluing face is toasted is covered and applies arbitrarily to soft;
For the second time the step of adhesive for polyurethane is brushed in gluing face is covered and applies arbitrarily to soft;
For the second time the step of gluing face is toasted is covered and applies arbitrarily to soft;
The first time is to soft set and applies arbitrarily in the step of adhesive for polyurethane is brushed in gluing face, and the brushing of adhesive for polyurethane is thick Degree is 0.5mm-1.1mm, and described second to soft set and applies arbitrarily in the step of adhesive for polyurethane is brushed in gluing face, polyurethane adhesive The brushing thickness of glutinous agent is 1.2mm-2.3mm.
8. the preparation method of polyurethane rubber sleeve in punching press punch according to claim 7, it is characterised in that described first It is secondary to it is soft set and apply arbitrarily in the step of gluing face is toasted, baking temperature be 49 DEG C -51 DEG C, baking time 3-5min, institute Second is stated to soft set and is applied arbitrarily in the step of gluing face is toasted, baking temperature is 49 DEG C -51 DEG C, baking time 9- 11min。
9. the preparation method of polyurethane rubber sleeve in punching press punch according to claim 6, it is characterised in that it is described will be soft In the step of covering and applying arbitrarily gluing face adhering and solidifying, solidification temperature is 120 DEG C.
10. a kind of process for stamping of punching press punch as claimed in claim 4, including:
1., angle steel is placed on the punch die equipped with the punching opposite with the punch;
2., punch undershoot, it is the extrudings distance of soft set and the extruding sum of the distance applied arbitrarily so that punch is poured the distance of punching, described The extruding distance of soft set and the extruding distance applied arbitrarily are determined according to following table:
The length of soft set The extruding distance of soft set The length applied arbitrarily The extruding distance applied arbitrarily 10mm-12mm 5mm-6mm 12mm-16mm 4mm-7mm 13mm-17mm 6mm-8mm 17mm-20mm 5mm-8mm 18mm-20mm 8mm-10mm 21mm-26mm 7mm-11mm
3., punch withdraw the step of.
CN201410852972.3A 2014-12-18 2014-12-18 A kind of preparation method of punching press punch, its process for stamping and polyurethane rubber sleeve CN104550433B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3485122A (en) * 1967-12-21 1969-12-23 Howard S Achler Spring-stripper for use with punches,dies and the like
CN102218469A (en) * 2011-05-05 2011-10-19 保定天威集团有限公司 Silicon steel sheet punching process and device for simultaneously punching two holes
CN102825429A (en) * 2012-09-06 2012-12-19 浙江科朗汽车配件有限公司 Automatic punching machine for steel strip
CN203221133U (en) * 2013-03-29 2013-10-02 滁州市精华模具制造有限公司 Sample plate type steel belt trimming die structure
CN204620809U (en) * 2014-12-18 2015-09-09 浙江盛达铁塔有限公司 A kind of punching press drift

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5359914A (en) * 1993-06-29 1994-11-01 Brown Richard H Two part urethane punch stripper

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3485122A (en) * 1967-12-21 1969-12-23 Howard S Achler Spring-stripper for use with punches,dies and the like
CN102218469A (en) * 2011-05-05 2011-10-19 保定天威集团有限公司 Silicon steel sheet punching process and device for simultaneously punching two holes
CN102825429A (en) * 2012-09-06 2012-12-19 浙江科朗汽车配件有限公司 Automatic punching machine for steel strip
CN203221133U (en) * 2013-03-29 2013-10-02 滁州市精华模具制造有限公司 Sample plate type steel belt trimming die structure
CN204620809U (en) * 2014-12-18 2015-09-09 浙江盛达铁塔有限公司 A kind of punching press drift

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