16results about "Mandrel separation arrangements" patented technology

The invention discloses bicycle hollow corrugated wall handlebar machining equipment, and particularly relates to the field of bicycle hollow corrugated wall handlebar machining, the bicycle hollow corrugated wall handlebar machining equipment comprises a pipe bending machine body, a connecting supporting plate, a hydraulic cylinder, a first clamp, a rotating mechanism, a second clamp and a pipe bending mechanism, the connecting supporting plate, the hydraulic cylinder and the first clamp are sequentially fixed to the upper portion of the pipe bending machine body, and the rotating mechanism is fixed to the lower portion of the pipe bending machine body; through the axial supporting effect of the core rod body, axial shrinkage caused by uneven stress in the bending process of the hollow pipe can be effectively avoided, precise conveying of lubricating oil is achieved through cooperative work of the oil inlet hose and the oil outlet hole ball, the lubricating oil can be directly conveyed to the position needing to be lubricated, waste and invalid smearing of the lubricating oil are avoided, and the service life of the hollow pipe is prolonged. In the continuous pipe bending process, lubricating oil can be continuously supplemented between the first outer supporting core sleeve and the inner wall of the hollow pipe and between the second outer supporting core sleeve and the inner wall of the hollow pipe, the problem that the lubricating effect is rapidly attenuated in a traditional manual oil coating mode is effectively solved, and the lubricating effect is more durable and stable.

The application relates to a pipe withdrawing device for assisting heat exchange pipes to exit from a fin machine, comprising: a pair of clamping rollers, including a first clamping roller rotating around a first axis and a second clamping roller rotating around a second axis; a gas cylinder connected to the first clamping roller and the second clamping roller via a first transmission assembly, and driving the first clamping roller and the second clamping roller to switch between a releasing state and a clamping state; the first transmission assembly comprises: a first gear wheel receiving a driving force of the gas cylinder to rotate around a third axis; a first swing block fixed to the first gear wheel and swinging around the third axis following the rotation of the first swing block; a second gear wheel meshed with the first gear wheel and driven to rotate around a fourth axis following the rotation of the first gear wheel; a second swing block fixed to the second gear wheel and swinging around the fourth axis following the rotation of the second swing block; a swing arm extending from the periphery of the first gear wheel and having a first long-hole; and the gas cylinder has a gas cylinder push rod engaged with the swing arm via a connecting pin inserted into the first long-hole.

This application relates to the field of pipe processing technology, and more particularly to a second clamping mechanism, a pipe threading auxiliary device, a pipe threading device, and a method. The second clamping mechanism comprises a third clamping block and a fourth clamping block, having a clamping state that is relatively close together and a releasing state that is relatively far apart. In the clamping state, the third clamping block and the fourth clamping block respectively clamp the non-terminal portion of the core rod head from both radial sides, and a second flared opening for the pipe head to enter is formed between the third clamping block and the fourth clamping block, with the terminal portion located within the second flared opening. In the releasing state, the third clamping block and the fourth clamping block release the core rod, and a channel for the pipe to pass through is formed between them. A second power member is configured to hold the third clamping block and the fourth clamping block in the released state.

Device (10) for handling mandrel bars (3) in a rolling plant (1) with a rolling mill (20) for rolling seamless pipes (2'), the device (10) having a pusher (11) for moving a mandrel bar (3) arranged in a rolling line (L) in a rolling direction (R) so that the mandrel bar (3) can be fed from a basic state into a pipe blank (2) arranged before the mandrel bar (3) in the rolling direction (R), a holding apparatus (12) with a stationary unit (12a) movable along the rolling line (L), which holding apparatus is arranged to temporarily fix the mandrel bar (3) at a point of action (3c) in the area of a rear end (3b) of the mandrel bar (3) and to perform a working stroke starting from a starting position (xA) in the rolling direction (R) and against the rolling direction (R), whereby the mandrel bar (3) can be driven into the rolling mill (20) in the rolling direction (R) and can be pulled out of the rolling mill (20) against the rolling direction (R) by the holding apparatus (12), characterized in that the holding apparatus (12) is such that the stationary unit (12a) in the starting position (xA) in the basic state is located between the two ends (3a, 3b) of the mandrel bar (3). A ​

The invention provides a device and method for preparing a metal micro-groove pipe, and relates to the technical field of metal pressing. A forming channel for a pipe blank to pass through is formed in a mold unit; micro insections are preset on the surface of the core rod; the first driving mechanism is used for applying axial thrust to the pipe blank, so that the pipe blank is subjected to radial shrinkage plastic deformation in the forming channel, and the pipe blank material is forced to flow and fill the micro insections of the core rod; the second driving mechanism is used for applying axial thrust to the core rod after forming is finished, and the core rod is pushed out of the formed pipe. In the forming stage, the deformation resistance of the material is reduced through electric pulses, and the technical problem that the micro insections are difficult to fill with the difficult-to-deform metal is solved; and in the demolding stage, the demolding resistance is reduced through ultrasonic vibration, and the technical problem that the hard core rod is prone to breakage in the drawing demolding process is solved in combination with a thrust demolding mode. Therefore, the device can be used for efficiently preparing the difficult-to-deform metal pipe with the precise inner micro grooves in a high-quality manner.

This invention relates to a high-efficiency piercing device, comprising a platform and a feeding mechanism. A piercing mechanism is located at the tail end of the feeding mechanism, a transfer mechanism is located on one side of the piercing mechanism, and a cooling mechanism is located at the tail end of the transfer mechanism. Unloading mechanisms are located on both sides of the feeding mechanism. The piercing mechanism includes a support component, a top support component a, and a top support component b. The transfer mechanism includes a rodless cylinder and a rotating component. The cooling mechanism includes a water spray component and a switching component. The feeding mechanism drives the stainless steel round bars to be pierced under the action of the top support components a and b. The rodless cylinder moves to switch the work positions of the top support components a and b. The rotating component, in conjunction with the feeding mechanism, transfers the stainless steel round bars to the unloading mechanism. The unloading mechanism is used to unload the stainless steel round bars. The switching component controls the water spray component to cool the top support components a and b sequentially. This invention solves the problems of long processing intervals, poor continuity, and low efficiency in traditional technologies.

The utility model relates to the technical field of pipe machining, in particular to a pipe fitting taper drawing pipe machining device which comprises a machine frame, and a taper cover die is arranged on the machine frame. The first driving part is arranged on the rack; the core rod is in transmission connection with the first driving part, the core rod can be sleeved with the material pipe, and the first driving part can drive the core rod to drive the material pipe to move in the first direction so as to penetrate through the taper cover die; the forward pushing mechanism can abut against the tail end of the material pipe, and the forward pushing mechanism can push the material pipe to move in the first direction; and the material returning mechanism is arranged on the rack, and the material returning mechanism and the first driving part can drive the core rod to move in the direction opposite to the first direction, so that the core rod drives the plasticized material pipe to penetrate out of the taper cover die to be separated. The pipe drawing device can smoothly finish the pipe drawing processing and material returning actions of the pipe fitting.

The invention belongs to the technical field of industrial manufacturing, and particularly relates to an intelligent core rod pulling-out sequential control device which comprises a bearing plate, a supporting plate is fixedly connected to one side of the upper surface of the bearing plate, a servo motor is fixedly installed on the outer surface of the supporting plate, and the output end of the servo motor is in spline connection with a ball screw; through the cooperation of the structure and the arranged early warning fault mechanism, when the core rod is pulled out, if the pulling-out device looses abnormally or is poor in clamping force, the core rod is abnormal, and personnel do not find the core rod in time in the pulling-out process, the core rod can be damaged, and the core rod can be prevented from being damaged. The pulling-out condition of the core rod can be detected through real-time monitoring by utilizing the fault early-warning mechanism, the pulling-out force and speed are adaptively selected according to the condition, if abnormity occurs, the fault early-warning mechanism can respond in time, dynamic adjustment or intervention can be performed once abnormity occurs, and the situation that the core rod slides out, deforms and fractures due to insufficient force is avoided.

Provided are a tubing material which can be industrially manufactured by a simple method, consisting of a Ni-Ti-based alloy material, having improved roughness of the inner wall surface, and superior in durability against rotary bending, a method for producing this, as well as a stent, a guide wire, and a pressure guide wire made using the tubing material. The tubing material consists of a Ni-Ti-based alloy, in which an arithmetic mean height Sa of an inner wall surface is 0.08 µm or more and 0.55 µm or less.

The application discloses a hollow steel pipe pressing and shaping machine and relates to the technical field of pressing and shaping machines.The hollow steel pipe pressing and shaping machine comprises a main box, both ends of the top of the main box are provided with side plates, the side close to each other of the two side plates is provided with a guide strip and a vertical strip, and a feeding channel is formed between the corresponding guide strip and vertical strip; the side away from the corresponding side plate of the vertical strip is provided with a feeding assembly; the feeding assembly comprises a fixed plate, a movable plate and a side plate; the fixed plate is fixed to the top of the main box; the movable plate is slid on the top of the main box; and the side plate is fixed to the side of the movable plate. The hollow steel pipe pressing and shaping machine is based on the structural design of the side plate, and through the cooperation of the fixed plate and the movable plate, the functions of automatic feeding, conveying, clamping and fixing, centering and discharging are realized; the hollow steel pipe pressing and shaping machine has the advantages of simple structure, high automation degree, stable and reliable operation, improved production efficiency and product consistency of hollow steel pipe pressing and shaping machining, reduced labor cost and safety risk and ensured use efficiency of the hollow steel pipe pressing and shaping machine.

The invention discloses a hollow steel pipe pressing and setting machine, and relates to the technical field of pressing and setting machines, the hollow steel pipe pressing and setting machine comprises a main box, side plates are installed at the two ends of the top of the main box, guide strips and vertical strips are installed on the sides, close to each other, of the two side plates, and a feeding channel is formed between the corresponding guide strips and vertical strips; a feeding assembly is arranged on the side, back to the corresponding side plate, of the vertical strip and comprises a fixed plate, a movable plate and a side plate, the fixed plate is fixed to the top of the main box, the movable plate slides on the top of the main box, and the side plate is fixed to the side portion of the movable plate. According to the hollow steel pipe pressing and shaping machine, the functions of automatic feeding, conveying, clamping and fixing, centering and discharging are achieved through cooperation of the fixed plate and the movable plate based on the structural design of the side plates, the structure is simple, the automation degree is high, operation is stable and reliable, the production efficiency and product consistency of hollow steel pipe pressing and shaping machining are improved, and the production cost is reduced. Meanwhile, the labor cost and the safety risk are reduced, and the use efficiency of the hollow steel pipe pressing and setting machine is guaranteed.

The application relates to a method and a device for assisting the withdrawal of a heat exchange tube from a fin machine, the device comprising: a pair of clamping rollers comprising a first clamping roller rotatable about a first axis and a second clamping roller rotatable about a second axis parallel to the first axis, and having a clamping state and a release state; wherein, in the clamping state, the first clamping roller and the second clamping roller are relatively close to each other to clamp the heat exchange tube from both radial sides of the heat exchange tube respectively; in the release state, the first clamping roller and the second clamping roller are relatively far away from each other to form a space for the heat exchange tube to pass through; a first power member connected to the pair of clamping rollers via a first transmission assembly and configured to drive the pair of clamping rollers to switch between the clamping state and the release state; and a second power member connected to the pair of clamping rollers via a second transmission assembly and configured to drive at least one of the first clamping roller and the second clamping roller to rotate when the pair of clamping rollers is in the clamping state.

The application discloses a front-end module manifold end piercing forming device and belongs to the technical field of heat exchanger processing equipment. The device comprises a processing base, a processing mechanism and an adjusting mechanism. The processing mechanism comprises a lower V-shaped module, a first sliding rail, an adjusting plate, a second sliding rail, an L-shaped limiting plate, an inner support core rod head, a lifting sliding rail, an upper V-shaped module and a processing plate. The adjusting mechanism comprises an X-axis sliding rail, a Z-axis sliding rail, a pneumatic cylinder and a punch. The radial clamping positioning of the manifold is realized through the cooperation of the upper and lower V-shaped modules. The inner support core rod head is inserted into the pipe inner cavity to provide rigid support to prevent the cross-section deformation of the pipe during the piercing process. The accurate adjustment of the punch position is realized through the X-axis sliding rail and the Z-axis sliding rail. The application has the advantages of good anti-deformation effect, reliable positioning and clamping, flexible punch position adjustment, and detachable structure facilitating the change of the type.

This invention discloses a processing equipment for hollow corrugated bicycle handlebars, specifically relating to the field of hollow corrugated bicycle handlebar processing. It includes a bending machine body, a connecting support plate, a hydraulic cylinder, a first clamp, a rotating mechanism, a second clamp, and a bending mechanism. The connecting support plate, hydraulic cylinder, and first clamp are sequentially fixed above the bending machine body. This invention, through the axial support of the mandrel body, effectively prevents axial contraction of the hollow tube during bending due to uneven force. The coordinated work of the oil inlet hose and the oil outlet ball achieves precise delivery of lubricating oil, directly delivering it to the parts requiring lubrication, avoiding waste and ineffective application. During continuous bending, it continuously replenishes lubricating oil between the first and second outer support mandrels and the inner wall of the hollow tube, effectively overcoming the problem of rapid lubrication decay in traditional manual oiling methods, resulting in a more durable and stable lubrication effect.

The utility model relates to the technical field of clamps, in particular to a multifunctional clamp which comprises a clamp body, product taking air cylinders are installed on the surfaces of the bottom of the clamp body, mold cores are arranged on the surfaces of one sides of the clamp body, a top plate is arranged above the clamp body, and the top plate is connected with the product taking air cylinders. And efficient demolding mechanisms are arranged on the inner wall of the clamp body and the surface of the mold core correspondingly, and each efficient demolding mechanism internally comprises a clamping assembly, a clamp disc, a material clamping rod and an anti-disengaging clamp. According to the utility model, the mold core can be conveniently taken out to the outside for automatic demolding, so that the clamp is more efficient when being used, and the demolding effect on the mold core is better.

The invention relates to the technical field of metal plastic processing, and particularly discloses a die and process for continuous stretching and cold heading of a connecting shaft sleeve. The die comprises a plurality of sets of die units which are sequentially arranged in the feeding direction, and a station, used for forming the convex belly part, of the die comprises an upper die punch, a lower die, an opening and closing type convex belly lower die and a core-pulling anti-adhesion subsystem. The upper die punch is matched with the female die capable of moving reversely, a material is extruded into the open-close type convex lower die cavity to form a convex part, and a driving mechanism is used for enabling the core rod to exit firstly and then opening the die to eject out a workpiece. According to the matched technology, efficient, continuous and full-automatic production of the connecting shaft sleeve is achieved through multi-station continuous stretching, convex belly preforming and finish machining and by combining clearance and pressure precise control. The method effectively solves the problems of demolding adhesion, insufficient dimensional precision, easy damage of the mold and low production efficiency in the traditional process, and is particularly suitable for large-scale manufacturing of the precise connecting shaft sleeve with the convex belly structure.