32results about How to "Easy draft" patented technology

In an apparatus for the fibre-sorting or fibre-selection of a fibre bundle comprising textile fibres, especially for combing, which is supplied by a supply device to a fibre-sorting device, especially a combing device, having clamping devices, which clamp the fibre bundle at a distance from its free end, for combing to remove non-clamped constituents, at least one take-off device 14 with a sliver-forming element is present, downstream of which is a drafting system. To increase productivity and improve the combed sliver, the fibre-sorting device has at least two rotatably mounted rollers rotating rapidly without interruption, having the clamping devices and between the sliver-forming element and the drafting system the at least one fibre sliver is present in the form of a fibre structure having a width greater than its height, for example, following spreading by a web-spreader.

The invention relates to a self-locking and interlocking mechanism for a cylindrical shell speed changer. The self-locking and interlocking mechanism comprises a shifting fork (1'), a shifting fork shaft (2'), a guide block (4'), a cylindrical pin (5'), a pressurizer, steel balls and a signal switch (10), wherein the guide block (4') acts on a cylindrical shell to limit the rotation of the cylindrical shell, and is fixed to the shifting fork shaft (2') by the cylindrical pin (5') to prevent the shifting fork shaft (2') from rotating; a tangent plane is positioned on the surface of the shifting fork shaft (2'), so that the shifting fork shaft is convenient to install; the shifting fork is connected with the shifting fork shaft by an elastic retainer ring (3'), so that the shifting fork shaft can rotate after being installed; the shifting fork shaft comprises a plurality of locking grooves and movable pins; and the movable pins are used for pushing the steel balls accommodated in the locking grooves out of the grooves to lock or unlock the shifting fork shaft. The self-locking and interlocking mechanism can be convenient to produce while the using performance is ensured by combining the advantage of a classical simple and reliable self-locking and interlocking mechanism for the steel balls and the advantages of light quality and convenience for batch production of aluminum alloy cylindrical shells.

The invention belongs to the field of automobile part production and processing and particularly relates to a demolding mechanism comprising an upper mold plate and a lower mold plate which are arranged in the vertical direction in an open-close mode. A mandrel for forming a sand mold center runner is arranged in the center of the lower mold plate. The mandrel and a core hole formed in the centerof the lower mold plate are in sliding fit in the vertical direction, and a first elastic unit is arranged between the mandrel and the lower mold plate and is used for driving the mandrel to pop up relative to the lower mold plate. The side wall of the mandrel is further provided with an annular groove. A clamping plate arranged slidably in the radial direction of the mandrel is arranged in the lower mold plate. A second elastic unit is arranged between the clamping plate and the lower mold plate. A telescopic airbag is further arranged between the clamping plate and the lower mold plate. According to the demolding mechanism, the mandrel is of an elastic structure, the lower mandrel is flush with the surface of molding sand during sand spreading so as to ensure the pass-through longitudinal runner, in addition, in the extrusion forming process, the mandrel contracts downwards under extrusion of a pressing column, the mandrel and the pressing column achieve mold opening to the upper andlower sides correspondingly during mold opening, the mold opening stroke of the mandrel is reduced, and mold pulling is facilitated better.

The invention discloses a mould capable of preventing cold shrinkage for excavator shovel head tip precision casting. The mould comprises an upper mould body and a lower mould body; an upper mould groove is formed in the middle of the upper mould body, and a demoulding ring is sleeved with the inner side wall of the upper mould groove; a lower mould groove is formed in the middle of the lower mould body; a jacking plate is slidably connected to an inner cavity of the lower mould groove; a hydraulic oil inlet channel is formed in the front side wall of the inner cavity of the lower mould groovein a penetrating mode; and a lower wax channel and an upper wax channel are mutually buckled. Through using of the jacking plate and the hydraulic oil inlet channel, when external wax is led into thelower mould groove and the upper mould groove, the hydraulic oil inlet channel is connected with an external hydraulic pump, and thus hydraulic oil enters the bottom face of the jacking plate to prevent cold shrinkage deformation of a wax mould; and meanwhile, through using of the demoulding ring, the function of convenient mould drawing is achieved.

The invention discloses a chain and inner chain pieces thereof. Each inner chain piece and one opposite chain piece can jointly define a clamping space, each inner chain piece comprises two assembledconnection parts arranged at an interval along a longitudinal center line, and a connection part connected with the assembled connection parts, each assembled connection part is proved with an assembled connection hole, the connection part is provided with a groove which is sunk in the direction away from the clamping space and is provided with two parallel spaced groove sides, the chain comprisesthe multiple inner chain pieces, multiple outer chain pieces and multiple chain shafts in series connection with the inner chain pieces and the outer chain pieces and each provided with a center axis, an axis distance is achieved between two adjacent center axes, and the ratio of the axis distance to the total width of the chain is 2.39+/-0.12. The chain can be more suitable for being used in thefield with the higher variable segment number and meanwhile, the speed changing smoothness is improved.

A curved surface processing method for an inlet edge of a cylindrical blade of a centrifugal pump impeller includes following steps. A center of an impeller is used as a center to draw circles having respective diameters. A first point having a first distance from the center is determined on a concave side curve at a top of the blade, and a second point having a second distance from the center is determined on a concave side curve at a bottom of the blade. By improving the shape of a blade in an impeller, the angle of an inlet edge at the top of the blade is more close to the tangent direction, and the inlet angle of the top blade is reduced. A twisted surface is formed between a first arc segment at the top and a second arc segment at the bottom.

The invention provides a support structure for a vehicle and a method of manufacturing the same. Weight reduction is realized. A support structure (10) for a vehicle is molded by a casting mold (22),provided between a vehicle body and a vehicle component, and including a support portion (12) which supports the vehicle component and a rib (14) which is continuously formed on the support portion (12). The support structure for a vehicle includes a core portion (16) recessed in a direction different from a mold split direction of the casting mold (22) on a side surface portion of the rib (14).

The invention discloses a combined type PE plastic bottle mold. The combined type PE plastic bottle mold comprises a mod body, wherein a mold cavity is arranged in the mold body and has a structure with an upper opening and a lower opening; a mold base matched with the mold cavity is arranged at the lower end of the mold body; a bottle body mold matched with the inner wall of the mold cavity is arranged in the mold cavity; and a handle mold matched with the inner wall of the mold cavity is arranged at the upper end of the bottle body mold. According to the invention, a PE plastic bottle mold is divided into a mold body, a mold base, a bottle body mold and a handle mold; plastic bottles with different shapes are combined according to different needs when in use; one set of molds is equivalent to the functions of common multiple sets of molds; and the PE plastic bottle mold has the advantages of simple structure, easy operation and cost saving.

The invention relates to a front panel structure of air condition indoor machine that includes bottom, motor, air supply fan, and indoor heat exchanger, front panel, air intake grid, and display. Front panel is made up of identity and supporting under identity. Two ends under identity have hook snug, and a hook is set corresponding to snug at two ends of frame. The supporting is connected to identity through hook. The invention has the advantages of easy to install, and working efficiency is improved. The producing cost is lowered.

The invention provides a quick withdrawing mold. The quick withdrawing mold comprises a stepped shaft workpiece. The quick withdrawing mold further comprises a first mold body, a second mold body, a third mold body and a knocking mechanism which are sequentially connected. The first mold body, the second mold body and the third mold body are sequentially provided with a first mold cavity, a second mold cavity and a third mold cavity correspondingly. The second mold cavity and the third mold cavity communicate with each other and then are matched with the stepped shaft workpiece. The first mold cavity corresponds to the second mold cavity. The third mold cavity further comprises a knocking mechanism stretching hole, and the knocking portion of the knocking mechanism is located in the knocking mechanism stretching hole, corresponds to the third mold cavity and can knock the stepped shaft workpiece. A first spring is arranged in the second mold cavity and connected with a buffer plate. According to the quick withdrawing mold, the second mold cavity and the third mold cavity communicate with each other and then form a continuously-through mold cavity body, and pouring liquid is poured into the mold cavity body so that the stepped shaft workpiece can be formed. After the stepped shaft workpiece is formed and cooled, the right end of the stepped shaft workpiece is continuously knocked with the knocking mechanism, and accordingly the stepped shaft workpiece can be squeezed out of the left end of the second mold cavity quickly.

The invention relates to an engineering machinery hydraulic torque converter pump impeller structure. The structure comprises an inner ring, an outer ring and a blade grid connected between the inner ring and the outer ring, the inner ring and the outer ring are concentrically arranged, a circulating circular cavity is formed between the inner ring and the outer ring, the blade grid comprises n blades which are evenly arranged in the circumferential direction, n is larger than or equal to 26 and smaller than or equal to 30, n is an integer, a liquid flow channel with an inlet and an outlet is formed between every two adjacent blades, and the section, obtained by cutting any radial surface, of the circulating circular cavity is roughly in a sector ring shape. Parameters of the blades are redesigned, so that the whole circulating circular cavity is roughly in a basin shape, a space streamline structure is adopted, and the impact loss is reduced; the projection of the whole blade falls in the end surface of the outer ring end of each blade, so that mold drawing is facilitated, and the blade manufacturing precision is improved; compared with an existing mature product, a hydraulic torque converter can meet the requirement of the whole machine by just modifying the impeller blade grid, the universalization degree of parts is high, and the mold investment is saved.

The invention provides a core inserter drawing device, which comprises a base, two articulation pieces, two actuating rods and a drawing rod, wherein the two articulation pieces are arranged on the base in a sliding mode; each actuating rod is provided with opposite first and second end parts; the first end parts of the two actuating rods are articulated with one articulation piece; the second end parts of the two actuating rods are articulated with the drawing rod; the two actuating rods move relatively through the sliding of the two articulation pieces ; the two actuating rods are positioned on two opposite sides of the drawing rod; and the drawing rod moves with the relative movement of the two actuating rods in a direction perpendicular to the sliding direction of the articulation pieces. The core insert drawing device adopting a technical proposal brings workers the convenience of drawing a core insert from a mould.

The invention relates to a guide wheel structure of a hydraulic torque converter of engineering machinery. The guide wheel structure comprises an outer ring, an inner ring and a blade grid connected between the outer ring and the inner ring. A circulating circular cavity is formed between the outer ring and the inner ring, the blade grid comprises n blades which are uniformly arranged in the circumferential direction, n is greater than or equal to 12 and less than or equal to 16, n is an integer, a liquid flow channel with an inlet and an outlet is formed between every two adjacent blades, the inner ring arc face of the outer ring is composed of three arcs, the outer ring arc face of the inner ring is composed of three arcs, and the width of the guide wheel is effectively shortened; the inlet angle, the outlet angle and the streamline length of the guide wheel are designed, the guide wheel blades are of a spatial streamline structure, internal impact loss is reduced, the projection of the end faces of the outer ring ends of the blades falls into the end faces of the inner ring ends of the blades, die drawing is easy, and the manufacturability of the blades is improved; and the capacity of a hydraulic torque converter adopting the guide wheel structure is improved, and therefore the performance of the hydraulic torque converter is improved.

The invention discloses a tapering component. The tapering component comprises a first fixed block, a second fixed block and a third fixed block, wherein a guide rod is arranged between the top of thefirst fixed block and the bottom of the second fixed block and is in sleeve connection with a connecting block being in slip connection; a first through hole matched with the guide rod penetrates theinterior of the connecting block; the first fixed block and the second fixed block are not on the same vertical plane; an opening is formed in the top of the connecting block; when the mold release is required, the connecting block is controlled to slide on the guide rod toward the direction of the first fixed block; in the downward sliding process of the guide rod, a sliding block slides along asliding chute toward the direction far away from the opening, so that the connecting rod slides in a second through hole, at the moment a module also moves in succession, a boss of the module avoidstouching other components, and thus, the tapering is realized quickly and conveniently. When the mold needs to be spliced, a user controls the connecting block and the sliding block in the opposite direction, so that the mold splicing can be realized quickly and easily.