4 results about "Plastic injection moulding" patented technology

The invention relates to a method for producing a connection between a first plastic component and a second plastic component, wherein at least one of the two components is produced by plastics injection moulding, wherein at least one fastening region is provided on the at least one component and is moulded with a surface structure of grooves having a small spacing, and wherein the components are connected to one another by an ultrasonic welding method in the fastening region.

The invention relates to a hydraulic device for supplying a plurality of work units (3a, 3b), in particular on a plastics injection moulding machine, said device comprising at least one controller (7), at least one valve regulator and / or one valve controller and a central drive (1). A regulating valve (13a, 13b) with a regulating-valve geometry is provided on at least one of the work units (3a, 3b). Pressure sensors (8) detect at least one pressure both upstream and downstream of the regulating valve (13a, 13b), the load pressure (10a, 10b) of at least one of the work units (3a, 3b), and the system pressure (9). Since the valve regulator and / or the valve controller has knowledge about the regulating-valve geometry of the at least one regulating valve (13a, 13b) and is designed to derive, from a relationship between the regulating-valve geometry and at least one pressure difference resulting from the pressures detected upstream and downstream of the regulating valve (13a, 13b), at least one volume flow rate actual value per regulating valve (13a, 13b), and the controller (7) is designed to derive, from the volume flow rate setpoint values of the at least one work unit (3a, 3b) and / or the volume flow rate actual values of the at least one regulating valve (13a, 13b), at least one setpoint value feedforward control for the central drive (1) in such a way that the system pressure (9) corresponds at least to the relevant highest load pressure (10a, 10b) of the work units (3a, 3b), the hydraulic device is improved in terms of functionality, energy, efficiency and economy.

The invention relates to a plastics injection moulding tool (1) comprising a tool plate (4) and a mould plate (16), wherein: starting from the tool plate (4), an injection runner (7) via which plastic is injected into a mould cavity part (2) in a flow direction (u) opens into the mould plate (16); the mould plate (16) has multiple mould cavity parts each with an injection runner, and a mould cavity part is held on the mould plate; furthermore, the mould cavity part has been inserted into the mould plate (16), which has a thickness (b) as viewed in the flow direction (u), from a front side (25) of the mould plate counter to the flow direction (u) of the plastic, and, in a resulting inserted position, a contact surface (20) of the mould cavity part rests against a counterpart contact surface (29) of the mould plate (6). In order to specify a plastics injection moulding tool which allows favourable fitting and / or removal of the mould cavity part combined with an advantageous design, according to the invention the mould cavity part (2) is formed in one piece, the mould cavity part (2) as viewed in the flow direction (u) has an extent (a) substantially corresponding to the thickness (b) of the mould plate (16), and the counterpart contact surface (29) is recessed in the mould plate (16) with respect to a surface (34), the rest of which surrounds and adjoins the mould cavity part (2), of the mould plate front face (25). The invention further relates to a fitting tool for fitting or removing a mould cavity part.

The utility model provides a disposable bobbin tube of high -efficient winding relates to textile tool technical field, include: synchronous bobbin tube, synchronous bobbin tube is the pipe that plastic injection moulding made, the inner tube wall surface of synchronous bobbin tube is provided with three to six inner lock direction lines, and the axis of inner lock direction lines is parallel with synchronous bobbin tube, synchronous bobbin tube can rotate with winding machine main shaft synchronously while keeping bobbin tube installation quick -witted, can install multiple bobbin tubes in the same winding machine main shaft and carry out the synchronous winding of multiple coils, if bobbin tube and winding machine main shaft sleeve connection are too close, then the disassembly of coil and the installation of bobbin tube are inconvenient, if sleeve connection is too slack, then bobbin tube will slip outside the main shaft, if multiple bobbin tubes are installed simultaneously and winding, then due to the difference of the slip degree of different bobbin tubes, lead to the winding amount of every bobbin tube is difficult to control accurately, can influence the problem of the batch manufacturing efficiency of coil.