KOSMEK GWA Die Clamps | Quick Mold Change Clamp |

KOSMEK GWA Die Clamps: Secure & Reliable Mold Fastening

The KOSMEK GWA Die Clamps are essential components for quick mold change systems, providing a robust and reliable method for securing molds in presses. A key characteristic of the GWA series is its integrated self-lock structure. This design innovation means that once the hydraulic pressure is applied to clamp the mold, the mechanism mechanically locks, allowing the oil pressure to be released back to zero. The clamp maintains its full clamping force even without continuous hydraulic pressure, significantly enhancing safety and system reliability.

Application and Compatibility

These die clamps are specifically engineered for mold plates that do not utilize traditional T-slots for clamping. They rely on the clamp gripping the edge of the mold plate. Due to this mechanism, the GWA clamps require a higher degree of mold plate size conformance. The precision of the mold clamping part thickness is critical; for optimal operation and security, the thickness variation should be less than ±0.5mm.

Technical Specifications

The KOSMEK GWA series offers a range of models to accommodate various clamping force requirements and mold sizes. The table below outlines the key technical parameters for each available type:

Model	Clamping Force (kN)	Clamping Force (kN)	Stroke (?)	Required Pressure (?)	Weight (kg?)	Qty (?)	Temp Range (°C)	Max Cycles/Day
GWA0100	9.8	9.8	3.9	1.0	6	3	0~70	Below 20
GWA0160	15.7	15.7	6.3	11	4
GWA0250	24.5	24.5	9.8	19	8
GWA0400	39.2	39.2	15.7	35	13
GWA0630	61.7	61.7	24.7	64	24
GWA1000	98	98	39.2	1.5	121	48
GWA1600	157	157	62.8	227	102
GWA2500	245	245	98.0	411	177
GWA4000	392	392	156.8	757	349
GWA5000	490	490	156.8	757	349

Note: Interpretation of some column headers is based on common die clamp specifications.

Crucially, mold clamping part thickness precision must be less than ±0.5mm.

Components and System Integration

The KOSMEK GWA clamps are designed for straightforward integration into quick mold change systems. Their operation involves hydraulic lines for clamping and releasing. Key observable components include:

• Hydraulic Ports: Thread locking joint (clamping) and Thread releasing joint.
• Position Confirmation Switches: Clamp confirm switch and Releasing confirm switch provide essential feedback signals to the press control system, ensuring proper clamp status before operation.
• Butter Supply Port: For maintenance lubrication.
• Mounting Screw: For securing the clamp.
• Wiring Interface: For connecting the confirmation switches.

These elements work together to provide reliable hydraulic clamping with the added security and energy efficiency of the self-lock feature.

Detailed Dimensions

Accurate physical dimensions are vital for planning the installation and layout of KOSMEK GWA die clamps on a press bolster. The table below provides the detailed dimensions for each model type. Fabricators should refer to these measurements to ensure proper fit and function within their specific press setup.

Model
GWA0100	41	48	20	8	81	129	21.5	19.5	48.5	8	33	8	-	12	M8	1.5	16	10	-	8	1/8	20
GWA0160	48	58	25	9	93	140	28	23	56.5	9.5	39	9.5	-	17	M10	12	10
GWA0250	56	72	31.5	10	107	150	30.5	24	64	17	50	11	-	21	M12	2	11	12	30
GWA0400	69	90	40	12	123	173	38	30	70.5	14	62	14	-	27	M16	14	16	1/4
GWA0630	82	110	50	14	140	194	41	33	83	22	76	17	-	33	M20	3	15	20	35
GWA1000	98	135	63	17	152	208	44	50	102	50	95	20	-	36	M24	20	24	40
GWA1600	128	138	75	20	205	256	80	63	143.5	63	104	17	40	33	M20	5	40	35	21
GWA2500	155	170	95	24	245	302	94	80	174	80	130	20	50	40	M24	45	25	50
GWA4000	195	215	118	28	305	355	119	90	208	90	162	27	60	50	M30	65	40	35	3/8
GWA5000	195	215	118	28	305	355	119	90	208	90	162	27	60	50	M33	65	35

Note: Specific meaning of each column header is not provided in the source material. This table is for detailed dimensional reference.

By utilizing KOSMEK GWA Die Clamps, fabricators can achieve secure and efficient mold changes, contributing to optimized press uptime and productivity.