Pressure plate assembly (sole attaching press)

01

Choose the pressing medium and two-stage action

A USM patent (US4363148A) describes a sole attaching press in which a small cylinder at low pressure moves the pressure-applying member between a retracted position and the shoe, after which a large cylinder applies the working force; it notes that earlier presses placed the lasted shoe on an inflatable pad whose compressed-air inflation exerts the attaching pressure over only a short distance, so the closing mechanism does not have to deliver full bedding pressure over its whole travel. [1]

A bonding-press patent (US4628559A) describes a fixed bed with an exchangeable receptacle plate holding the lasted upper with the sole on top, and a pressing pad made of a stable metal cowl with an expandable diaphragm sealed to its flange; a toggle-lever mechanism closes and locks the cowl so the linear drive only supplies the small opening and closing forces while the toggle carries the pressing load. [3]

Give the supplier the shoe types and size range, last and sole shapes, adhesive system and open time, required bedding pressure and dwell, number of stations and output, pressing medium (pad, diaphragm, plates), heating if needed, air and power supply, changeover of pads or receptacles, and safety standard.

02

Check sole coverage, locking and safety

A second USM patent (US4430766A) addresses cementing presses whose pressure portions are side-by-side pads over the toe, ball and waist, noting that these can leave stepped imprints on shoes with high waists; it uses a heel presser and a toe-and-ball rocker assembly that is locked in the position it takes against the shoe bottom before full bedding pressure is applied, for a more uniform pressing effect. [2]

The bonding-press patent adds a locking device that keeps the cowl closed until the internal pad pressure has dropped to zero or a low level, and a toggle design that guards against the pad dropping suddenly if a piston rod breaks or pressure is lost. [3]

03

Compare current press models: stations, pressure, bags and output

SUTEAU-ANVER, a French maker of footwear machinery, lists three sole attaching presses. Its hydraulic 600-2/600-4 has 2 or 4 stations, an adjustable pressure of 2 to 12 kg reached instantly and spread over all angles, 2 or 4 rubber bags of Ø 220 mm, regulation of hydraulic pressure and holding time, an output of up to 1,200 pairs in 8 hours, a width of 850 mm, a weight of 450 kg and a 5,500 W line power. [4] Its pneumatic 600AC has 2 stations, 2 to 6 kg adjustable pressure, two Ø 220 mm rubber bags and up to 600 pairs in 8 hours. [5] Its SA PASM for KNEIPP and GOODYEAR construction has 2 stations, microprocessor programs, membrane retraction by vacuum, membrane inflation in less than one second, a choice of standard or double-thickness membranes, an optional support for sizes 16 to 48, a net weight of 305 kg and air consumption of about 48 litres per cycle at 6 bar. [6]

Set these current machines beside the pad, diaphragm and two-stage pressing designs in the patents above, which explain why coverage and locking matter for each station. [1] [2] [3]

Editorial calculation: 1,200 pairs in 8 hours is 150 pairs per hour, or 2.5 pairs per minute across the press; at about 48 litres per cycle, 600 SA PASM cycles would use about 28.8 m³ of air at 6 bar.

Give the supplier your sole construction, size range, target pairs per shift and plant air pressure, and ask for the pressure range, pad or membrane size, cycle time and air or power consumption.

04

Hydraulic walled sole presses from two listed makers

Dafeng lists hydraulic walled sole attaching presses and Tushi Jingyi its JY-989 hydraulic walled sole pressing machine; ask each for the bag size, pressure range and pairs per shift that SUTEAU-ANVER publishes for its 600 series.

Ask any supplier for pressing medium and pad sizes, maximum pressure and how it is set, dwell control, number of stations and output, shoe and size range, changeover parts, heating, air consumption, power supply, safety interlocks and guarding, footprint and weight.

05

Pad or diaphragm, toe-and-ball rocker, heel presser, closing cylinder, toggle, receptacle plate and safety lock

Each row maps to one of the three patents; the receptacle plate and safety lock come only from the bonding-press patent US4628559A. [3]

06

Pressure, bag size, heating, cycle time, supply, power and weight for a sole press order

SUTEAU-ANVER is the only source with machine figures, and it states pressure in kg rather than MPa; the heating, temperature, flatness, roughness and IP rows have no published value.

07

Send the shoe, sole and line data together

Paste it into your enquiry below or into an email to a maker, then replace every bracket.

Shoes: [types; size range; lasts]
Soles: [profile; material]
Adhesive: [type; open time]
Pressing: [pad; diaphragm; plates]
Pressure: [maximum; dwell]
Stations: [number; output]
Utilities: [air; power]
Safety: [interlocks; standard]

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