Using machines by the H&T Pro­duk­tion­sTech­nolo­gie, met­al bel­lows can be pro­duced from sin­gle- or mul­ti-lay­er tubes with var­i­ous man­u­fac­tur­ing tech­niques for a wide range of appli­ca­tions in dif­fer­ent busi­ness lines.

More­over, we man­u­fac­ture spe­cial-pur­pose machines accord­ing to the customer’s require­ments, mod­i­fied for the required part quan­ti­ty, dimen­sions, and accu­ra­cies.

The tech­niques imple­ment­ed are:

• Hydro­form­ing
• Elas­tomer form­ing
• Mechan­i­cal expand­ing
• Roll form­ing

Met­al bel­lows from 12 to 5.000 mm diam­e­ter can be pro­duced on these machines.

Ful­ly auto­mat­ed man­u­fac­tur­ing of flex­i­ble met­al tubes (cor­ru­gat­ed hoses) by con­tin­u­ous, hydraulic express­ing seg­ments by seg­ment.

• Machine of the “WSM“ type in hor­i­zon­tal design
• Form­ing of cor­ru­gat­ed seg­ments with sev­er­al cor­ru­ga­tions per shap­ing
• Cor­ru­gat­ed seg­ments and cylin­dri­cal seg­ments can be pro­grammed in arbi­trary sequence
• Auto­mat­ed tube feed­ing
• Auto­mat­ed deliv­ery of fin­ished parts on roll table for man­u­al removal
• Man­u­fac­tur­ing of cor­ru­gat­ed hoses up to 6.000 mm length (depends on nom­i­nal widths)
• Ingo­ing mate­r­i­al length from 2.000 to 13.000 mm

High-yield machines to pro­duce met­al bel­lows.

• Machine series “APMY“
• Com­plete form­ing by hydraulic inner pres­sure (hydro­form­ing)
• Sleeves/ bel­lows are man­u­al­ly removed and insert­ed
• Diam­e­ter-relat­ed die plates
• Cor­ru­ga­tion of a com­plete met­al bel­lows in one oper­a­tion
• Pro­duc­tion of sin­gle- and mul­ti-lay­er bel­lows
• Up to 30 cor­ru­ga­tions per bel­lows
• End con­tour by means of spe­cial­ly-shaped sup­port­ing die plates
• Com­bi­na­tion of straight tube seg­ments with cor­ru­gat­ed seg­ments

Machines to pro­duce met­al bel­lows for com­pen­sators from tubes, for small to medi­um batch­es.

• Machine series “APME“
• Shap­ing of sin­gle cor­ru­ga­tions by widen­ing the elas­tomer
• Low-cost dies
• Hor­i­zon­tal design
• Fin­ished tube lengths of max. 600 mm
• Cor­ru­gat­ed hose seg­ments and cylin­dri­cal seg­ments can be pro­grammed in arbi­trary sequencer
• Dif­fer­ent cor­ru­ga­tion height val­ues can be man­u­fac­tured with­in a sin­gle bel­lows

Machines for small and medi­um-sized batch­es to pro­duce met­al bel­lows from tubes for com­pen­sators.

• Machine series “EXPAN“
• Form­ing of indi­vid­ual cor­ru­ga­tions by means of a mechan­i­cal expand­ing tech­nique
• Sen­sors to iden­ti­fy bel­lows edges, motor-con­trolled re-adjust­ment of the mount­ing table height
• Inte­grat­ed swiv­el motion of the basic die to avoid pres­sure marks
• Sta­ble weld­ed steel con­struc­tion for instal­la­tion in the machine pit (plat­form also alter­na­tive­ly pos­si­ble)
• Pro­fil­ing of indi­vid­ual cor­ru­ga­tions by fol­low-up pro­fil­ing on the pro­fil­ing machine of the PRM type
• Rapid and easy die change

Basic dies can be adapt­ed in a cus­tomized man­ner to the diam­e­ter range required; with­in this range, the easy exchange of form­ing seg­ments offers great flex­i­bil­i­ty.

• Auto­mat­ed pro­ce­dure
• Exchange parts of sim­ple design
• Axi­al feed­ing of the pro­fil­ing rollers dur­ing pro­fil­ing pos­si­ble
• Adjustable bel­lows mount­ing