CN1724785A - Shaping method for drum of drying machine and rolled drum structure according to it - Google Patents

Abstract

The invention supplies rolling barrel molding method of a dryer that has no mould separating trace. The proper circle rate of the entire rolling barrel is improved. And the inside scuffing of the rolling barrel would be avoided in the molding process. The molding method includes the following steps: the molding stage of the rolling barrel; two ends of the rolling barrel expanding pipe and molding stage, processing and layering at the center of the rolling barrel stage, and bending collapsing beading process stage. The dryer rolling barrel includes column barrel, opening section, layering section and beading section.

Description

Drum of dryer forming method and according to its rolling roller frame

Technical field

The present invention belongs to drum of dryer, particularly relates to a kind of about the forming method of clothes class drying machine drum and according to its rolling roller frame.

Background technology

Generally, dryer is the machine that oven dry objects such as the clothes supply in cylinder is dried by the hot blast of electric heater or gas combustion apparatus generation.Recently, its demand is the trend that increases.

Fig. 1 illustrates the structure of dryer in the past, is the exploded perspective view of its pith formation.

As shown in Figure 1, be provided with cylinder (1) in shell (not shown) inside that constitutes the dryer outward appearance.Cylinder (1) sees it is cylindrical shape on the whole, forms the form of its forward and backward side's opening, and is formed with the belt grooves (2) that the belt (not shown) that utilizes other drive source to drive twines along its outer peripheral face.

Being formed with the space of drying in the inside of cylinder (1) is drying chamber (5), and be formed with most lifters (6) in the inside of cylinder (1), fall after when cylinder (1) rotates, putting on the oven dry object in the drying chamber (5), improve drying efficiency by upset oven dry object process thus.

And, be provided with corresponding front support frame (7) and back side support (9) separately in the front-end and back-end of cylinder (1).Here, front support frame (7) and back side support (9) are blocked the front side of cylinder (1) and rear side and are formed drying chamber (5), and the play back-up roller separately front-end and back-end of (1).

In addition, the promising seal member (10) revealed of preventing is set between the cylinder (1) of front support frame (7) and rotation and between back side support (9) and the cylinder (1) that rotates.

And support (7) and back side support (9) in front are provided with most rollers (not shown) separately and come back-up roller (1) on the corresponding position at the place ahead of cylinder (1) and rear.

In addition, be formed with the through hole (8) that is communicated with drying chamber (5) and outside on the front support frame (7).Through hole (8) comes selectivity to open and close by door (not shown).

And support (9) is provided with warm-air supply conduit (12) overleaf, and warm-air supply conduit (12) is communicated with drying chamber (5), plays a part to supply with to drying chamber (5) path of hot blast.

In addition, having from the part of drying chamber (5) discharge air in front support frame (7) one sides that are equivalent to front support frame (7) through hole (8) lower end is spout assembly (13).

And spout assembly (13) is provided with lint filter (14).Lint filter (14) plays the effect of the foreign matter (for example, the end of a thread or dust) that filtration mixes from the air that drying chamber (5) is missed.

In addition, be communicated with spout assembly (13) and be provided with lint (15), lint filter (14) is arranged to the interior position of lint conduit (15).The pressure fan (17) that is connected with lint conduit (15) also passes through the air that lint conduit (15) sucks drying chamber (5).Pressure fan (17) is arranged on the inside of pressure fan casing (18).

Pressure fan casing (18), a side is connected with blast pipe (19) with lint conduit (15) connection, opposite side.

So, discharge and discharge to the outside by blast pipe (19) in the air-supply effect of pressure fan (17) through the air of lint conduit (15) from drying chamber (5).

In addition, the entrance side of warm-air supply conduit (12) is connected with guide pipe (16), and the hot blast that guide pipe (16) takes place when playing a part fuel gas buring is to the entrance side guiding of hot blast supplying duct.

And, the entrance side of guide pipe (16) is provided with gas combustion apparatus (20), and the valve of the combustion gas supplied with to Gas Pipe by control of gas combustion apparatus (20), forms for mixing tube that the combustion gas of spraying from gas nozzle and 1 air are mixed and for the igniter of lighting mist.

In addition, the following process of the general process of cylinder that is applicable to dryer is come moulding.

As shown in Figure 2, make front, the back side and the core of cylinder at first separately.

At this moment, each several part is after metal foils such as stainless steel are rolled into cylindrical shape, the each several part of butt joint is welded again.

Afterwards, the front of cylinder (1) and the back side, core by closing up processing, interconnect each several part as shown in Figure 2, and the moulding of cylinder finishes thus.

But, the following shortcoming of cylinder forming method in the past.

According to drum of dryer forming method in the past, cylinder (1) is divided into and closes up butt joint again after front and the back side, core are made separately, so complicate fabrication process and process number increase.

In addition, the front and the back side, center make latter linked cylinder (1) in the past separately, because the inconsistent possibility height of axiality of each several part, in this case, directly where applicable increases vibrations and noise on products such as dryer, influences the product reliability.

Summary of the invention

The present invention provides a kind of about the forming method of clothes class drying machine drum and according to its rolling roller frame in order to solve the technical problem that exists in the background technology.Its purpose is, improves the forming method of drum of dryer and cylinder is made into integral body makes the whole cylindricity that improves operation when making and improve cylinder, therefore reduces vibrations and noise at the product where applicable and improves the dryer reliability.

In addition, to the objective of the invention is in order adapting, to provide the high dryer of reliability the structure optimization of drum of dryer with the cylinder forming method that improves.

The present invention in order to solve the technical scheme that the technical problem that exists in the background technology takes is:

Drum of dryer forming method of the present invention, it includes the stage of cylindrical drum moulding; Part except that the cylindrical drum both ends is carried out the stage of expansion-molding; In the stage that the expansion tube department ceiling molding of cylindrical drum is processed; The stage of the crimping processing that folds for the periphery, both ends that makes cylindrical drum is stacked constitutes; Utilization is by the upper die assembly, osculant core mold assembly, the drum of dryer forming method of the cylinder make-up machine that lower mould assembly and stamping machine constitute, it includes: the stage of cylindrical drum being inserted the osculant core mold outside, under the state of both ends strangulation, most moulds that are positioned at the cylinder inboard are released the corresponding position of cylinder inner peripheral surface separately laterally from the inboard and are expanded stage of central part, carry out the stage of press strip processing and forming on the assigned address at the position of cylinder expansion-molding, the stage of crimping processing is carried out in bending for the periphery, two ends that makes cylinder is mutually stacked; Wherein the upper die assembly comprise by motor, be connected top jaw on the electric machine rotational axis, along top jaw can radial dilatation and shrink upper core mould that ground is provided with, in the isolated setting in the outside of upper core mould and can constitute with the upper outside mould that the upper core mould separates lifting; Osculant core mold assembly comprise by be arranged on intermediate cam on the axle that is connected with the rotating shaft straight of motor, can radial dilatation and shrink ground and be provided with, and form reeded osculant core mold outside and constitute along intermediate cam; Lower mould assembly and the same formation of upper die assembly, and be positioned at the opposing face of upper die assembly; Stamping machine is given the pressurization of upper die assembly.

In addition, according to the rolling drum of dryer of drum of dryer forming method of the present invention, it comprises the cylindrical drum that is had the junction surface of solder joints by the part of docking mutually at metal material; Be positioned at the both ends of cylindrical shell and have the peristome of the diameter littler than barrel diameter; The press strip portion that forms for reinforced tube intensity; For the peripheral stacked flanging part that carries out the crimping processing that makes peristome constitutes; Metal material thickness is 0.5-0.8mm, is preferably 0.5 5-0.7mm; Peristome internal diameter and barrel internal diameter ratio are more than 0.9, to be preferably 0.93-0.94; The cylindrical shell external diameter of adjacent apertures portion is below the 25mm to the degree of depth of peristome external diameter; Metal material is a certain in stainless steel series or galvanized sheet series or special steel plate, senior cast copper plate, selected cast copper plate, senior surface hardening steel plate, the standard surface hardened steel plate, when metal material is senior cast copper plate or selected cast copper plate, be formed with coating on the metal material; Outer wall in barrel or press strip portion is provided with the rubber of promising absorbing vibration or the damping band of metal material; At the welded joint two ends is to carry out crimping to handle the not non-weld part of welding that is formed with certain-length.

Advantage and good effect that the present invention has are: owing to improve the forming method of drum of dryer, the cylinder integral manufacturing, when when making, improving operation the whole cylindricity of cylinder is improved, when being applicable to product, reduce vibrations and noise, so the effect that improves the dryer reliability is arranged.

In addition, the present invention because the best roller frame that is applicable to cylinder expansion-molding method is provided, has the effect that can improve the reliability of dryer when being used for product when improving the cylinder mouldability.

Description of drawings

Fig. 1 is the exploded perspective view of drying machine structure in the past.

Fig. 2 is the flow chart of cylinder forming process in the past.

Fig. 3 is the flow chart of cylinder forming process of the present invention.

Fig. 4 is the figure that the cylinder state is shown according to the forming process of Fig. 3.

Fig. 5 is the flow chart that more specifically segments cylinder forming process of the present invention.

Fig. 6 a to Fig. 6 g is the reference state figure that cylinder and shaped device are shown according to forming process,

Fig. 6 a is the shaped device profile before cylinder inserts,

Fig. 6 b is the lower support state profile after cylinder has just inserted,

The figure of supported back, the cylinder top state when Fig. 6 c is the decline of upper die assembly,

Fig. 6 d is the figure of state behind the firm expansion-molding when launching according to the osculant core assembly,

Fig. 6 e is the figure that keeps out of the way state for the top and the bottom outside mould of press strip and crimping processing,

State diagram when Fig. 6 f is the press strip moulding,

Fig. 6 g is the state diagram after the crimping processing,

After Fig. 6 h is all processing, according to the figure of the contractive action cylinder demoulding state of core mold,

Fig. 7 is the roller frame front elevation that the method according to this invention is made.

The explanation of main symbol

1: cylinder 1a: expansion tube department

1b: press strip 30: motor

40: upper die assembly 41: top jaw

42: upper core mould 43: the upper outside mould

50: osculant core mold assembly 51: intermediate cam

52: osculant core mold 520: groove

60: lower mould assembly 61: lower cam

62: bottom core mold 63: the bottom outside mould

70: roller

The specific embodiment

For further understanding content of the present invention, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:

Fig. 3 is a cylinder forming process flow chart of the present invention, and Fig. 4 is the figure that the cylinder state is shown according to the forming process of Fig. 3.Drum of dryer forming process of the present invention roughly can be divided into the stage of cylindrical drum (1) moulding, the stage of expansion-molding except that the both ends of cylindrical drum (1), the expansion tube department (1a) of cylindrical drum (1) is gone up the stage of processing press strip (1b), carries out the stage of crimping processing for the periphery, both sides that makes cylinder is mutually stacked.

The stage of cylindrical drum (1) moulding is: earlier the metal foil of materials such as stainless steel is rolled into the contacted connecting portion of welding steel behind the drum.Central part in cylindrical drum (1) utilizes roller (70) processing press strip (1b) during press strip (1b) moulding.

Specify cylinder of the present invention (1) forming process below in conjunction with the cylinder make-up machine.

Fig. 5 is the flow chart that more specifically segments cylinder forming process of the present invention, and Fig. 6 a to Fig. 6 g is the reference state figure that cylinder and shaped device are shown according to forming process.Be applicable to the cylinder make-up machine of cylinder of the present invention (1) moulding, it comprises by upper die assembly (40), osculant core mold assembly (50), lower mould assembly (60) and stamping machine (not shown) formation.Wherein, upper die assembly (40) comprises by motor (30), be connected the top jaw (41) on motor (30) rotating shaft, can radial dilatation and shrink the upper core mould (42) that ground is provided with, upper outside mould (43) formation of being separated by and being arranged on upper core mould (42) outside and can separate lifting along top jaw (41) with upper core mould (42); Osculant core mold assembly (50) comprises by the intermediate cam (51) that is arranged on the axle that is connected with the same straight line of motor (30) rotating shaft, along intermediate cam (51) can radial dilatation and shrink ground be provided with, and the osculant core mold (52) that externally is formed with groove (520) constitute; Lower mould assembly (60) and upper die assembly (40) constitute identical and are positioned at the opposite position of upper die assembly (40); Stamping machine (not shown) is given upper die assembly (40) pressurization.

Lower mould assembly (60) comprises by the lower cam (61) that is arranged on the axle that connects osculant core mold (52), can radial dilatation and shrink the bottom core mold (62) that ground is provided with along lower cam (61), being separated by is arranged on bottom core mold (62) outside and can constitutes with the bottom outside mould (63) that bottom core mold (62) separate lifting.

Utilize the cylinder forming process of cylinder make-up machine as follows.

At first, insert cylindrical drum (1) (a) to osculant core mold (52) outside of cylinder make-up machine with reference to Fig. 6.

At this moment, cylindrical drum (1) bottom that is inserted in osculant core mold (52) outside by osculant core mold (52) and bottom core mold (62) with and bottom outside mould (63) support in the outside.

Here, cylindrical drum (1) is as mentioned above steel plate (example; Stainless steel) is rolled into after the cylindrical shape connecting portion that is docked is made with welding.Outside it, cylindrical drum (1) also can be with different known method manufacturings.

After cylindrical drum (1) is inserted in osculant core mold (52) outside of cylinder make-up machine, upper die assembly (40) is the decline certain distance under the effect of stamping machine (not shown) pressing force, and cylinder (1) upper end is inserted between the upper core mould (42) and upper outside mould (43) that constitutes upper die assembly (40) thus.(with reference to Fig. 6 b).

Under this state, if the expansion fine laterally of upper core mould (42) and bottom core mold (62) forms the clamp (not shown) to the cylinder upper and lower end parts.

And, cylinder (1) upper and lower end parts by the state of nip under, osculant core mold (52) is expanded laterally, so form the expander of cylinder middle part.

The both ends of cylinder are under the state of nip, and most moulds that are positioned at the cylinder inboard are released the position of the correspondence of cylinder inner peripheral surface from the inboard separately laterally, so central part expansion (with reference to Fig. 6 C).

Then, carry out the yielding process (with reference to Fig. 6 d) of upper outside mould (43) and bottom outside mould (63) after the expansion-molding of cylinder (1) central part finishes.

The process (with reference to Fig. 6 e) of carrying out press strip (1b) moulding at the expansion tube department (1a) of cylinder (1) central authorities.

At this moment, in the process of cylindrical drum (1) central part press strip (1b) moulding, because the motor (30) of cylinder make-up machine drives, the core mold rotation, each roller (70) in cylinder (1) outside moves to each groove (520) direction of correspondence, give the pressurization of cylinder (1) outer peripheral face, so the position that is pressed down by roller (70) is deformed into the shape of groove (520).Thus, finish the press strip moulding.

Then, after the press strip moulding finishes, the crimping process (with reference to Fig. 6 f) that bends for the periphery, both sides that makes cylinder (1) is stacked.

And, to the crimping process finishing of periphery, both sides, and after the processing of cylinder moulding is all over, core mold (42) (52) (62) with reference to the accompanying drawings in the contractive action of the direction of arrow from cylinder (1) demoulding (with reference to Fig. 6 g).Thus, the interference between core mold and the cylinder (1) is excluded, and makes it become the state that cylinder (1) breaks away from from core mold.

At this moment, before the core mold contractive action, the bottom outside mould of keeping out of the way laterally (63) move to can back-up roller (1) bottom the position.

In addition, get rid of the interference between core mold and the cylinder (1) after, upper die assembly (40) rises, and is excluded fully to the interference of upper direction, can take out cylinder (with reference to Fig. 6 h) from the cylinder make-up machine thus.

According to such drum of dryer forming method of the present invention, can solve the phenomenon that cylinder central part cylindricity descends to the whole expander simultaneously in the middle part of cylinder (1).

So cylinder that the method for forming according to the present invention is produced uses in product, can keep the cylinder smooth in appearance, also energy minimization of vibrations and noise simultaneously.

In the cylinder forming process, the press strip forming process is that cylinder also rotates because of the core mold rotation.But under the state that cylinder (1) stops, roller (70) also can form press strip along the rotation of cylinder outer peripheral face.

Fig. 7 is the roller frame front elevation of making according to method of expanding of the present invention.Drum of dryer (1) according to the inventive method expansion-molding, it comprises the cylindrical drum that is had the junction surface of solder joints by the position of docking mutually at metal material, have both ends and its diameter peristome littler, in the press strip portion that cylindrical shell forms for reinforcement intensity than barrel diameter at cylindrical shell; Carry out the flanging part formation that crimping is handled in order to make the peripheral stacked of peristome.

At this moment, metal material has the thickness of 0.5-0.8mm, and being more preferably the thickness that metal material has 0.5-0.7mm is feature.

The internal diameter ratio of cylinder (1) peristome and cylindrical shell (perhaps external diameter ratio) is more than 0.9, and the ratio that is more preferably cylinder (1) peristome internal diameter and cylinder internal diameter is that 0.93-0.94 is its feature.And beginning to the degree of depth of peristome external diameter (c) from cylindrical shell (that is the central part of the expander) external diameter at adjacent apertures portion (that is cylinder both ends) is below the 25mm.That is, the expander degree of depth (c) is below the 25mm.

Metal material can be stainless steel series or galvanized sheet series.Can also be a certain in special steel plate (STS), senior cast copper plate (SGCC), selected cast copper plate (SECC), senior surface hardening steel plate (SGCH), the standard surface hardened steel plate (SFCH), and when using above-mentioned a certain metal material, on metal material, can form coating.

Outer wall in cylindrical shell or press strip portion can be set to the rubber of absorbing vibration or the damping band (not shown) of metal material.

The amplitude of press strip portion or quantity can suitably change according to the kind or the capacity of cloth drying machine.That is, the press strip shape on the cylinder is not limited to the last illustrated press strip shapes of each figure such as the figure (7) on this specification, and its amplitude and number etc. can change as required.

Handle in order to carry out crimping easily at the two ends at junction surface, the not non-weld part of welding of distance to a declared goal can be set.

The metal material thickness of drum of dryer (1) should be as follows in the meaning in the 0.5-0.8mm scope: (problem that metal material is torn when SFCH, thickness SECC) are littler than 0.5mm, takes place to metal material in SGCH during expansion-molding for STS, SGCC.Simultaneously, thickness is less than 0.5mm, and in drying course, noise became big when the metallicity button of pledging clothes etc. was run into cylinder (1).Thickness is greater than 0.8mm, and not only fee of material rises, and in manufacture process, need strengthen stamping pressure during expansion-molding, simultaneously because of weight increases, and effort when on shell, assembling cylinder (1).And gaining in weight, the many weight of roller (not shown) increase to back-up roller (1) both sides become burden when making completed knocked down products.

Drum of dryer of the present invention (1), the thickness of metal material should be in the 0.5-0.8mm scopes, and solve its above-mentioned shortcoming.

Secondly, the meaning that the ratio of cylinder (1) peristome internal diameter and cylinder internal diameter or external diameter ratio (in other words, the expander degree of depth) have is as follows: when cylinder (1) was made of the expansion-molding method, the gauge strips of metal material gave the influence of expander degree very big.That is, so-called expander is a draftability of utilizing metal material, so expander can not proceed to needed state when metal material is too thin.

If consider to add the swift volume in a certain size shell (not shown) inside, the cylindrical shell of cylinder can only be in certain limit with interior expander.But, interdependence between the front support frame (7) (with reference to Fig. 1) in consideration cylinder (1) peristome and cylinder the place ahead, the internal diameter ratio of cylindrical shell and peristome is necessary to fix on certain scope.

For this reason, the present invention provides best with the minimal thickness of metal material and can be the baker roller frame of cylindrical shell expander to necessary degree through test many times.

The present invention satisfies these scope, when peristome and cylinder internal diameter are 0.9 can prevent that metal material from tearing when above than (B/A).The optimum range that stability etc. is taken into account is 0.93 to 0.94.Promptly, feasible embodiment of the present invention, when the thickness of metal material (STS) was 0.5mm, the cylindrical shell external diameter was that 663mm, peristome external diameter are 616-623mm, the diameter difference of cylindrical shell external diameter and peristome external diameter is 40-47mm, therefore the distance (c) from the cylindrical shell external diameter to the peristome internal diameter.[the expander degree of depth; With reference to figure (7) is 20-23.5mm]

When the thickness of metal material special steel plate (STS) is 0.5mm, when the cylindrical shell external diameter is 663mm, suppose that cylindrical shell and peristome external diameter ratio are 0.9, then the diameter difference of cylindrical shell external diameter and peristome external diameter is 67mm, and the distance from the cylindrical shell external diameter to peristome external diameter maximum (C) (the expander degree of depth) is 33.5mm.When the expander degree of depth greater than 33.5mm the time, the problem that metal material is torn in forming process is so the expander degree of depth should be below 33.5mm.

In addition, according to another embodiment of the present invention, when the thickness of the selected cast copper plate of metal material (SECC) was 0.6mm, the expander degree of depth should be about 4 4mm.

Cylinder of the present invention is formed with at least more than one for strengthening the press strip portion of intensity at cylindrical shell.

In addition, in order to absorb or to reduce noise and the vibrations that the inner washings of cylinder (1) causes, at the cylindrical shell external diameter or do not establish in the press strip portion of belt and twine damping band (not shown).At this moment, the damping band can be made with rubber or metal material, and the damping band is close to cylinder body outer wall or press strip portion outer wall and is fixed.That is, the damping band at cylindrical shell or press strip portion outer wall to adhere to or tight state twines.

The junction surface of cylinder (1) utilizes plasma inert gas-shielded arc welding electric welding machine butt joint welding (end of metal material not stacked mutually and weld) under the state that connects.Its reason is: if metal material is stacked mutually, then can not ensure the deflection identical with other part during expansion-molding.

In addition, handle for the crimping that carries out the peristome end, the both ends at junction surface can not engage on certain-length.

The forming process that is used in the cylinder on the dryer in this specification is for illustrating, and the present invention is not only applicable to the cylinder of dryer, and can also be applicable to that central part needs the forming process of all form cylinders of expander.

In addition, the present invention does not limit in an embodiment, in the scope that does not break away from the technology of the present invention thought diversified distortion and change can be arranged.

Claims (22)

1, a kind of drum of dryer forming method is characterized in that, it comprises the stage by the cylindrical drum moulding; Part except that the cylindrical drum both ends is carried out the stage of expansion-molding; Process the stage of press strip at the expansion tube department of cylindrical drum; The stage of carrying out crimping processing for the periphery, both ends that makes cylindrical drum is stacked constitutes.

2, drum of dryer forming method according to claim 1 is characterized in that, the stage of cylindrical drum moulding is: after the metal foil of materials such as stainless steel is rolled into drum, and the contacted connecting portion of welding steel.

3, drum of dryer forming method according to claim 1 is characterized in that, utilizes roller processing press strip on the cylinder type cylinder during roll forming press strip.

4, a kind of drum of dryer forming method is characterized in that, utilizes to comprise the rolling drum of dryer of cylinder make-up machine that is made of upper die assembly, osculant core mold assembly, lower mould assembly and stamping machine; It includes: the stage of cylindrical drum being inserted the osculant core mold outside, most moulds that are positioned at the cylinder inboard at both ends under by the state of strangulation are released the corresponding position of cylinder inner peripheral surface separately laterally from the inboard and are expanded stage of central part, carry out the stage of press strip processing and forming on the position of cylinder expansion-molding, the stage of crimping processing is carried out in bending for the periphery, two ends that makes cylinder is mutually stacked; Wherein the upper die assembly comprises by motor, be connected the top jaw on the electric machine rotational axis, can radial dilatation and shrink the upper core mould that ground is provided with along top jaw, in the isolated setting in the outside of upper core mould and can constitute with the upper outside mould that the upper core mould separate lifting; Osculant core mold assembly comprises by the intermediate cam that is arranged on the axle that is connected with the rotating shaft straight of motor, can radial dilatation and shrink ground and be provided with, and form reeded osculant core mold outside and constitute along intermediate cam; Lower mould assembly and the same formation of upper die assembly, and be positioned at the opposing face of upper die assembly; Stamping machine is given the pressurization of upper die assembly.

5, drum of dryer forming method according to claim 4 is characterized in that, the process segment of the central part press strip moulding of cylinder type cylinder comprises the stage of being rotated according to the motor-driven of cylinder make-up machine by core mold; Along with the groove side of roller to core mold pressurizes to cylinder, the stage that the pressurized portion of cylinder is deformed into groove shapes constitutes.

6, drum of dryer forming method according to claim 4, it is characterized in that, in order to make two ends except that the central part of cylinder expander peripheral stacked and after carrying out the crimping process finishing, the stage that is excluded along with the core mold interference between shrinkage type core mold and the cylinder to the inside.

7, drum of dryer forming method according to claim 6 is characterized in that, the interference upper back die assembly of getting rid of between core mold and the cylinder rises.

8, drum of dryer forming method according to claim 7 is characterized in that, carries out the taking-up stage of cylinder after interference between eliminating core mold and the cylinder and upper die assembly rise.

9, according to a certain described drum of dryer forming method in the claim 1 to 8, it is characterized in that cylinder is a stainless steel.

10, a kind of drum of dryer forming method is characterized in that, utilizes the rolling drum of dryer of cylinder make-up machine that is made of upper die assembly, osculant core mold assembly, lower mould assembly and stamping machine; It includes: the stage of cylindrical drum being inserted the cylinder make-up machine osculant core mold outside, along with the upper core mould descends, the stage between upper core mould and the upper outside mould is inserted in the cylinder upper end, upper core mould and bottom core mold are expanded and back-up roller stage at both ends up and down laterally, under the state of and strangulation supported at the both ends up and down of cylinder, the osculant core mold is expanded the stage of carrying out cylinder pars intermedia expander laterally; The upper die assembly comprises by motor, be connected the top jaw on the electric machine rotational axis, can radial dilatation and shrink the upper core mould that ground is provided with along top jaw, in the isolated setting in the outside of upper core mould and can constitute with the upper outside mould that the upper core mould separate lifting; Osculant core mold assembly comprises by the intermediate cam that is arranged on the axle that is connected with the rotating shaft straight of motor, can radial dilatation and shrink ground and be provided with, and form reeded osculant core mold outside and constitute along intermediate cam; The identical formation of lower mould assembly with the upper die assembly, and be positioned at the opposite position of upper die assembly; Stamping machine is given the pressurization of upper die assembly.

11, a kind of rolling drum of dryer of drum of dryer forming method of using is characterized in that, comprises the cylindrical drum that is had the junction surface of welding and engaging by the part of docking mutually at metal material; Possess both ends and its diameter peristome littler than barrel diameter at cylindrical shell; In the press strip portion that cylindrical shell forms for reinforcement intensity; The flanging part that crimping is handled in order to make the peripheral stacked of peristome constitutes.

12, according to claim 11 a kind of with the rolling drum of dryer of drum of dryer forming method, it is characterized in that metal material thickness is 0.5-0.8mm.

13, according to claim 12 a kind of with the rolling drum of dryer of drum of dryer forming method, it is characterized in that metal material thickness is 0.55-0.7mm.

14, according to claim 12 or 13 described a kind of rolling drum of dryer of drum of dryer forming method of using, it is characterized in that peristome internal diameter and barrel internal diameter ratio are more than 0.9.

15, according to claim 14 a kind of with the rolling drum of dryer of drum of dryer forming method, it is characterized in that the ratio of peristome internal diameter and barrel internal diameter is 0.93-0.94.

16, according to claim 12 or 13 described a kind of rolling drum of dryer of drum of dryer forming method of using, it is characterized in that the cylindrical shell external diameter of adjacent apertures portion is below the 25mm to the degree of depth of peristome external diameter.

17, according to claim 11 a kind of with the rolling drum of dryer of drum of dryer forming method, it is characterized in that metal material is stainless steel series or galvanized sheet series.

18,, it is characterized in that metal material is a certain in special steel plate, senior cast copper plate, selected cast copper plate, senior surface hardening steel plate, the standard surface hardened steel plate according to claim 11 or 17 described a kind of with drum of dryer forming methods rolling drum of dryer.

19, a kind of rolling drum of dryer of drum of dryer forming method of using according to claim 18 is characterized in that, when metal material is senior cast copper plate or selected cast copper plate, is formed with coating on the metal material.

20, according to claim 11 a kind ofly it is characterized in that, the rubber of promising absorbing vibration or the damping band of metal material are set at the outer wall of barrel or press strip portion with drum of dryer forming method rolling drum of dryer.

21, according to claim 11 a kind ofly it is characterized in that with drum of dryer forming method rolling drum of dryer, because the cylindrical shell expansion-molding, the peristome diameter barrel diameter that compares is little.

22, a kind of rolling drum of dryer of drum of dryer forming method of using according to claim 11 is characterized in that, at the welded joint two ends is to carry out crimping to handle the not non-weld part of welding that is formed with certain-length.

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