369results about "Screw-threads articles" patented technology

The invention provides an internal thread extrusion forming process and device, which solves the problems of internal thread turning and the like, the internal thread extrusion forming device comprises a clamp for clamping a workpiece, the clamp is provided with a cutter bar opposite to the workpiece, the clamp and / or the cutter bar are / is in transmission connection with a driving structure, and a planetary internal thread extrusion assembly is mounted in the cutter bar. The method has the advantages of being high in machining efficiency, low in cost and the like.

The invention relates to the technical field of thread rolling machining, and discloses penetrating rod thread rolling equipment for an automobile air brake, the penetrating rod thread rolling equipment comprises a plurality of sets of thread rolling mechanisms which are sequentially connected in series, and each thread rolling mechanism comprises a feeding assembly, a thread rolling machining assembly, a discharging assembly, a feeding assembly and a detecting assembly; the detection module is used for detecting materials, the discharging module is used for discharging unqualified materials, and qualified materials can enter a thread rolling station; the thread rolling machining assembly is used for conducting thread rolling machining on the materials at the thread rolling station. The hopper in the subsequent thread rolling mechanism is in butt joint with the discharging assembly in the previous thread rolling mechanism. Three sections of threads are machined at a time by splicing the three thread rolling mechanisms, automatic conveying is achieved between the adjacent thread rolling mechanisms, materials do not need to be manually conveyed in sequence, the production efficiency is remarkably improved, and manual intervention is reduced; before entering the thread rolling process, the penetrating rod is subjected to at least one detection, defective products are eliminated, and the production requirements of high-precision parts are met.

The invention relates to full-automatic thread machining equipment, and belongs to the technical field of machining. The device comprises a hydraulic thread rolling machine, a feeding mechanism arranged on one side of a thread rolling wheel of the hydraulic thread rolling machine, a feeding mechanism arranged on one side of the feeding mechanism and used for supplying materials to the feeding mechanism, and a storage mechanism arranged on the side, away from the hydraulic thread rolling machine, of the feeding mechanism and used for storing the materials. The hydraulic thread rolling machine is provided with a pushing air cylinder used for driving the shaft body to move to the feeding mechanism. The feeding mechanism comprises a conveying table used for conveying a shaft body, a mounting support arranged at the top of the conveying table, a driving air cylinder arranged at the top of the mounting support, an overturning plate in transmission connection with a piston rod of the driving air cylinder and a feeding air cylinder arranged on the mounting support and used for pushing the shaft body to the machining position of the hydraulic thread rolling machine. A piston rod of the driving air cylinder is provided with a transmission assembly used for being in transmission connection with the overturning plate. The thread machining efficiency can be improved.

The invention provides a vehicle-mounted steel bar flexible machining device and method. The device comprises a flat truck; the raw material bin module is used for placing steel bars of different specifications; the movable saw cutting unit is used for cutting the reinforcing steel bars into preset lengths; the excess stock bin is used for collecting reinforcing steel bar waste; the lifting transfer truss is used for transferring the reinforcing steel bars in the picking truss to the movable saw cutting unit or transferring reinforcing steel bar waste cut by the movable saw cutting unit to the excess stock bin; the rib stripping and thread rolling module is used for grinding the end surfaces of the reinforcing steel bars; the bending module is used for bending the reinforcing steel bars; the power control system is used for generating a steel bar production material list and controlling the raw material bin module, the movable saw cutting unit, the lifting transfer truss, the rib stripping and thread rolling module and the bending module to complete steel bar machining according to the steel bar production material list. Nomadic production can be achieved, the steel bar transportation time is shortened, steel bar orders are received on the construction site, sporadic material orders are generated, the suit cutting scheme is optimized, the loss rate is reduced, and the steel bar production scheduling time is shortened.

The present invention provides an aluminum alloy screw that uses 6000 series aluminum suitable for recycling, that has sufficient mechanical properties, and that can be used for fastening, with respect to automobile parts or the like, which is subjected to loads and is required to be highly reliable. Also provided are: a simple and efficient method for producing this aluminum alloy screw; and an aluminum allow screw material that can be suitably used in said production. The aluminum alloy screw according to the present invention is characterized by containing 0.9-1.3 wt% Si, 0.8-1.5 wt% Cu, 0.8-1.2 wt% Mg, 0.2-0.4 wt% Cr, 0.15-0.45 wt% Mn, 0.005-0.05 wt% Ti, with the remainder including Al and unavoidable impurities, where the tensile properties of the screw shaft section is such that the tensile strength is 460 MPa or more, the 0.2% yield strength is 380 MPa or more, and the breaking elongation is 10% or more.

The invention discloses a fastener thread machining device, and relates to the technical field of thread machining, the fastener thread machining device comprises a rack, the rack is provided with a guide plate, and the guide plate is provided with a transfer claw used for transferring blanks and a right triangle guide groove used for guiding the transfer claw to move. The transfer claw moves along the guide groove in the guide plate, a blank on a linear feeding machine is conveyed between the movable plate and the static plate, the supporting plate on the transfer claw continuously lifts the head of the blank in the initial stage of blank extrusion, the blank is kept to be vertically arranged, regular threads are conveniently pressed on the lower portion of the blank through the movable plate and the static plate, and the blank extrusion efficiency is improved. After the transfer claw moves along with the blank for a period of time, the U-shaped notch formed by the supporting plate is back to the inclined part, the transfer claw moves along with the inclined part, the supporting plate is separated from the blank, the groove formed by pressing the lower part of the blank is embedded with the bulges on the movable plate and the static plate, the vertical state can be kept without support, and the movable plate continuously moves to be matched with the static plate to press regular threads on the blank.

The utility model relates to the technical field of lead screw machining equipment, in particular to a positioning and adjusting mechanism for lead screw machining. The thread rolling device comprises a thread rolling machine, adjusting plate assemblies and a positioning mechanism, and the adjusting plate assemblies are arranged on the two sides of the thread rolling machine respectively. The adjusting plate assembly comprises a plurality of connecting plates and middle plates which are in staggered contact, moving assemblies are arranged at the bottom ends of the connecting plates and the bottom ends of the middle plates correspondingly, top sliding rails are arranged at the top ends of the connecting plates correspondingly, sliding rails are arranged on the middle plates correspondingly, and side sliding rails are arranged on the two sides of the sliding rails correspondingly; the side sliding rails are in sliding connection with the top sliding rails; the multiple sets of positioning mechanisms are arranged on the two adjusting plate assemblies in a sliding mode. The positioning mechanism can move on the adjusting plate assemblies with different lengths all the time through the sliding rails and the top sliding rail which are connected in a staggered mode.

The utility model discloses external thread forming equipment. The external thread forming equipment comprises a rack; the feeding mechanism is arranged on the rack and comprises a conveying assembly and a sorting assembly, the conveying assembly comprises a vibration disc and a conveying guide rail, the conveying guide rail is in butt joint with the discharging end of the vibration disc, and the sorting assembly is arranged at the discharging end of the conveying guide rail; the machining mechanism is arranged on the rack and comprises a power component, a first thread rolling block and a second thread rolling block, the power component drives the first thread rolling block to move, and the first thread rolling block and the second thread rolling block are matched to form a gap; wherein the conveying guide rail is provided with a limiting part, the limiting part is arranged at the end of the conveying guide rail, the limiting part is matched with the second thread rolling to form a guide channel, and the two ends of the guide channel communicate with the conveying guide rail and the gap correspondingly. The vibration disc continuously conveys the screws to the conveying guide rail one by one, then the sorting assembly conveys the screws into the machining mechanism one by one for machining, the situation that the multiple screws enter the machining mechanism at the same time is avoided, the production stability is improved, and the product yield is increased.

A method for preparing a thermoplastic composition comprising grafted cellulose and optionally grafted hemicellulose is disclosed. The method includes providing a composition comprising cellulose and optionally hemicellulose, dissolving the cellulose and optionally hemicellulose of the composition at least partially, thereby obtaining a solution comprising solubilized cellulose and optionally solubilized hemicellulose, extruding the cellulose and optionally hemicellulose into a shape, such as a filament, a bead, a 3D object, or a molded article, and treating the shape with cyclic ester monomer, such that the cyclic ester monomer reacts with the cellulose and optionally hemicellulose contained in the shape, thereby at least partially grafting the cellulose and optionally hemicellulose with the cyclic ester monomer, thereby obtaining a thermoplastic composition.

A fully threaded implant for use for tissue and bone fixation to restore anatomical relationships has been discovered.

The application relates to an inner thread core-pulling demolding structure for an injection mold and the injection mold; the structure comprises a core-pulling insert, an inner tube and a sleeve; the first end of the core-pulling insert is provided with a screw thread; the first end of the core-pulling insert is also provided with a plurality of first moving parts which are divided along the axial direction of the screw thread and arranged in a circular array, and a second moving part is formed between any two adjacent first moving parts; in an initial state, the plurality of second moving parts are inwardly close to each other and are distributed in a staggered mode with the plurality of first moving parts; the inner tube is arranged in the core-pulling insert; when the inner tube is moved to be close to the screw thread, the plurality of second moving parts are gradually unfolded outwardly and are combined with the plurality of first moving parts; the sleeve is arranged outside the core-pulling insert; when the inner tube does not push the plurality of second moving parts and the sleeve is moved to be close to the screw thread, the plurality of first moving parts are gradually close to each other under extrusion; the inner thread product can be smoothly demolded, the operation is convenient and accurate, and the demolding quality and efficiency are effectively improved.

The present invention relates to a replaceable interdental brush having a core brush body and a method for manufacturing the same, and relates to the technical field of teeth cleaning tools. [Solution] The replaceable interdental brush with a core brush body according to the present invention comprises a grip, a rotating lid, a fixed block, and a brush body. The end of the grip is provided with a male thread, and the interior of the rotating lid is provided with a female thread. The male thread on the end of the grip fits into the female thread inside the rotating lid. One end of the fixed block abuts the grip and the other end protrudes from the rotating lid. The brush body comprises a core and brush bristles. The core is formed by twisting amorphous alloy wire, one end of the core is clamped within the fixed block, and the brush bristles are connected to the periphery of the other end. The present invention has a simple structure, is easy to manufacture, is environmentally friendly, and is suitable for widespread use and application. The fixed end of the brush body is fastened to the tip of the grip by the fixed block and the rotating lid. This design allows the brush body to be replaced if it breaks during use, and the other parts are recyclable. The amorphous alloy wire has high strength, good toughness, and does not contain elements harmful to the human body, making it a durable interdental brush that is resistant to breakage during use.

The application relates to a multi-station automatic machining method for intermediate shafts, which comprises the following steps: placing intermediate shaft blanks to be machined in a forward-reverse detection station, numbering, and establishing intermediate shaft codes; performing forward-reverse detection through a laser sensor on the forward-reverse detection station; performing taper hole depth detection on the intermediate shaft through a contact type displacement sensor on a taper hole detection station, simultaneously performing length detection on the intermediate shaft, then adding the taper hole depth information and the intermediate shaft length information to each intermediate shaft code; reading the parameter information of each intermediate shaft for corresponding machining, grabbing the intermediate shaft by a translation manipulator to a thread rolling machining device for machining, obtaining intermediate shaft finished products; blowing oil, and conveying and storing the intermediate shaft finished products after oil blowing. Compared with the prior art, the application realizes a safe and efficient intermediate shaft machining process through full-automatic coding feeding, forward-reverse adjustment, automatic station translation handling, code information adding and corresponding machining input.

A core-pulling mold with threaded teeth includes a threaded tooth core-pulling mechanism. The mechanism is located on one side of the upper and lower mold cores and includes a threaded core, a threaded core rotation assembly, a threaded core movement assembly, a insert rod, an insert rod movement assembly, and a threaded core positioning assembly. The inner end of the threaded core has a threaded portion. The threaded core rotates under the drive of the threaded core rotation assembly and is simultaneously driven by the threaded core movement assembly to allow the threaded portion to extend into or retract from the injection cavity. The peripheral wall of the threaded core has an oblique through-hole communicating with the inner end face of the threaded core. The insert rod, driven by the insert rod movement assembly, can extend and retract through this oblique through-hole. A positioning ratchet is also provided on the peripheral wall of the threaded core. The threaded core positioning assembly includes a positioning pawl and a positioning elastic element. The positioning pawl is oscillatingly positioned on one side of the threaded core and is pushed by the positioning elastic element to abut against the positioning ratchet, thus limiting the reverse rotation of the threaded core without limiting its forward rotation. This enables rapid mass production of products with threaded ends and oblique liquid outlet channels, ensuring production efficiency and quality.

Provided are: a steel bar suitable as a material for a bolt having a large diameter, high strength, and high toughness; a bolt having a large diameter, high strength, and high toughness; and a method for producing the bolt. The steel bar 1 has a chemical composition, in mass %, of C: 0.35-0.45% inclusive, Si: 0.10-0.50% inclusive, Mn: 0.50-2.00% inclusive, P: 0.030% or less, S: 0.030% or less, Ni: 1.00-3.00% inclusive, Cr: 0.50-2.00% inclusive, and Mo: 0.10-0.50% inclusive, the balance being Fe and impurities, and has a DI value of 420 or more and a diameter of 65 mm or more.

The utility model relates to a feeding mechanism of an automatic thread rolling machine, and relates to the technical field of thread rolling machines. A feeding mechanism of an automatic thread rolling machine comprises a discharging slide way and a material pushing plate, the tail end of the discharging slide way is a blank feeding position, the material pushing plate is located on one side of the tail end of the discharging slide way and is aligned with the blank feeding position, a thread rolling mechanism is arranged on the other side of the tail end of the discharging slide way, and the feeding mechanism of the automatic thread rolling machine further comprises a check block. The stop block and the material pushing plate are located on the same side of the discharging sliding way, the stop block stretches into the discharging sliding way to stop a next blank to enter a blank feeding position, the material pushing plate is connected with a driving mechanism, and when the driving mechanism drives the material pushing plate to stretch into the blank feeding position, the blank is pushed to enter the blank feeding position. The stop block and the material pushing plate synchronously and reversely move, and the material pushing plate drives the stop block to retreat from the discharging slide way. According to the feeding device, the phenomenon that feeding is blocked due to mutual influence between the material pushing plate and the blank can be prevented.

The invention discloses cold heading and thread rolling station integrated type automatic screw production equipment and belongs to the technical field of screw machining equipment.The cold heading and thread rolling station integrated type automatic screw production equipment comprises a machining frame, a material moving mechanism and a first machining assembly, the machining frame is fixedly arranged on the ground, and the material moving mechanism is arranged in the middle of the machining frame; the first machining assemblies are arranged on the two sides of the machining frame, a plurality of temporary bearing grooves are formed in the top of the machining frame at equal intervals, to-be-machined materials can be placed on the temporary bearing grooves, and the material moving mechanism can move the to-be-machined materials on the temporary bearing grooves to the next adjacent temporary bearing groove. The to-be-machined materials can be subjected to multiple times of cold heading forming machining in the conveying process, the to-be-machined materials subjected to cold heading machining can be subjected to thread rolling machining immediately, and integrated continuous operation of cold heading and thread rolling procedures is achieved.

The application discloses a plastic pipeline with spiral strip structure on the outer surface and a preparation method thereof, and comprises the following steps: mixing, hot stirring and cooling and stirring plastic pipeline raw materials to obtain a mixture; feeding the mixture into an extruder and extruding through a die to form a pipe blank with spiral strip structure; making the pipe blank pass through a rotating sizing sleeve assembly and being cooled and shaped in a water tank to obtain the plastic pipeline with spiral strip structure on the outer surface; synchronously rotating and dragging the plastic pipeline by using a rotating pipe dragging mechanism, and then performing length cutting; after cutting, the pipeline is corrected by a correction pipe supporting frame, is dragged by a two-jaw belt dragging machine, and is marked by code spraying, and then is packed into a warehouse to obtain the plastic pipeline with spiral strip structure on the outer surface. The application is a new type of dragging and rotating extrusion technology instead of a traditional die rotating extrusion technology, and the technology can realize long-term stable production and has a high production speed.

A kind of feed detection tool of thread rolling machine, it is related to thread rolling machine technical field, wherein the thread rolling machine includes thread rolling machine body and the feed channel connected with its feed end, detection component is equipped on the feed channel;The detection component includes the fixed part installed in the side of feed channel, the support part slidingly fitted with the fixed part along the height direction of feed channel and the blocking part obliquely fixedly installed on the support part, part of the support part is located above the feed channel, locking part is arranged between the support part and the fixed part to fix the position of support part;The distance between blocking part and above the feed channel is such that the bolt head of qualified bolt blank can just pass through, when encountering bolt blank with excessively thick bolt head, it will be blocked by blocking part;Simple and convenient to operate, bolt blank with excessively thick bolt head can be quickly picked out in time, different specifications of bolt blank can also be adapted, the normal use of thread rolling machine and product quality are guaranteed.

A thermoforming apparatus (1) for applying a coating film (2) to a support (3) comprising a bottom wall (4) and a lateral wall (5) which define an inner surface (6) and an outer surface (8). The thermoforming apparatus (1) comprises a supporting element (14), defining a housing space (15) for the support (3), and a closing element (16), which are movable between a home position, in which they are spaced apart, and a working position, in which they are coupled. The thermoforming apparatus (1) comprises means for creating a vacuum (19) for causing the coating film (2) to adhere to the inner surface (6), and a movable application element (23) for applying a portion (34) of the coating film (2) to the outer surface (8) at the lateral wall (5).

The utility model discloses a demolding device suitable for bidirectional injection molding products. The demolding device is used for demolding of structures with internal threads and inner holes. Comprising an upper die and a lower die for forming a product, an axial demolding assembly is arranged at the input end of the lower mold, and a circumferential demolding assembly is arranged on the side face of the lower mold; the axial demolding assembly at least comprises a sliding block and an insert which synchronously move in the axis direction of a product. The circumferential demolding assembly at least comprises a rack and a thread core which are arranged in a meshed mode, and the rack is perpendicular to the insert. The rack penetrates through the lower die; the thread core is located in the lower die and arranged on the periphery of the insert in a sleeving mode, and a thread structure matched with an internal thread of a product is formed at the tail end of the thread core. The mold has the advantages that the product in the lower mold is demolded in two directions through the axial demolding assembly and the circumferential demolding assembly, after axial demolding, the insert is separated from the product to expose an inner hole, after circumferential demolding, the thread core is separated from the product to expose an internal thread, complete demolding of the product is completed, and the quality of the demolded product is guaranteed.

The utility model discloses an efficient thread rolling machine for screw production, which comprises a machine body, the initial end of the machine body is provided with a feed port, the tail end of the machine body is provided with a discharge port, the machine body is provided with a thread rolling mechanism for performing thread machining on external to-be-machined screws, and the feed port is provided with a feeding mechanism for conveying the external to-be-machined screws to the machine body. The device further comprises an anti-throwing hopper, the anti-throwing hopper is arranged close to the discharging port, a feeding hole allowing the machined screws discharged out of the discharging port to move in or throw in is formed in the anti-throwing hopper, the feeding hole is formed towards the discharging port, and a discharging hole allowing the machined screws in the feeding hole to move to external next procedure equipment is formed in the bottom of the feeding hole in a penetrating mode. A guiding structure used for guiding the thrown machined screws to smoothly move into the discharging hole and a suction structure used for cleaning chippings on the machined screws in the feeding hole are arranged in the feeding hole. The thread rolling machine solves the problem that a machined bolt is damaged or scrapped due to the fact that a traditional thread rolling machine is prone to the material throwing phenomenon.

The rolling apparatus (1) is configured to execute a control content for producing a test piece (61) by forming fixed-side streaks (62) and moving-side streaks (63) in a base material (60), and a control content for receiving an inputted positional deviation amount between groove center lines of the moving-side streaks (63) and virtual groove center lines (W) of the fixed-side streaks (62), and then for calculating and outputting a correction movement amount, based on the positional deviation amount, for use in correcting and adjusting the moving flat die (4) at a top dead center thereof. Further, the rolling apparatus (1) is configured to execute a control content for receiving and outputting an input of bite depths(T) of the fixed-side streaks (62) and moving-side streaks (63) in the test piece (61).

The application discloses a thread rolling machine convenient for digitally adjusting thread rolling parameters and relates to the technical field of thread processing, and solves the problem of inconvenient angle adjustment of two thread rolling plates and influence on thread rolling precision. The thread rolling machine comprises a left thread rolling die and a right thread rolling die; wherein the left thread rolling die comprises a left sliding base, a left die mounting seat, a first thread rolling plate and a taper adjusting mechanism; the taper adjusting mechanism comprises a first adjusting block; the right thread rolling die comprises a slidable right sliding base, a right die mounting seat, a second thread rolling plate, a spacing adjusting mechanism and a parallelism adjusting mechanism; the parallelism adjusting mechanism comprises a second adjusting block; one side of the second thread rolling plate with teeth is provided with at least one inclined area, and the inclined area is arranged on the upper edge of the second thread rolling plate. In the application, the two thread rolling plates can be synchronously moved towards each other up and down, the inclined area can form support for the blank, the first thread rolling plate and the second thread rolling plate can be adjusted at multiple angles, and the parallelism of the two thread rolling plates is ensured, so that the machining precision is improved.

The utility model discloses a thread rolling machine for hardware screw production, which relates to the field of screw production and comprises a fixing mechanism, a thread rolling mechanism, a thread rolling mechanism, a thread rolling mechanism, a thread rolling mechanism, a thread rolling mechanism and a thread rolling mechanism, the fixing mechanism comprises a fixing seat and a connecting seat, and a workpiece is clamped between the fixing seat and the connecting seat; a thread rolling mechanism; wherein the thread rolling mechanism comprises a thread opening device, the thread opening device is arranged above the workpiece, an arc-shaped bottom plate is fixed to the side, close to the connecting base, of the fixing base, the thread opening device is arranged above the workpiece, the arc-shaped bottom plate can support the lower surface of the workpiece, the stability of the workpiece during thread opening is improved, meanwhile, the connecting base is close to the fixing base, and the thread opening device is arranged on the connecting base. In addition, after the pump body is started, suction force generated by the adsorption holes can adsorb chippings into the collection box, collection work is automatically completed, generation of the chippings is reduced, meanwhile, the suction force can absorb part of heat on a workpiece during thread opening, and the cooling effect is achieved.

The invention relates to a method and a device for manufacturing screw caps by thermoforming. The process includes the following steps: - Providing a film made of a thermoplastic material and heating the film; - Feeding the film between a lower tool and an upper tool, which are movable relative to each other in an axial direction perpendicular to the film, wherein the lower tool comprises a plurality of rotatable form segments, the impression surfaces of which have an external thread complementary to the internal thread of the closure body or an internal thread complementary to the external thread of the closure body; - Closing of the lower and upper tools while the film is subjected to differential pressure in order to reshape the film, forming the closure bodies on the impression surface of the rotatable mold segments; - Allow the foil to cool; - at least partial opening of the lower and upper tools, while the rotatable mold segments perform a rotation about the axial direction synchronized according to the pitch of the internal thread in order to remove the closure bodies from the mold segments; - Removing the film with the formed closure bodies from the lower and upper tools; and - Separating the individual closure bodies from the foil to obtain the screw caps.

The utility model discloses a high-efficiency bolt thread rolling device which comprises a U-shaped machining table, a vertical plate is arranged on one side of the top end of the U-shaped machining table, a three-jaw chuck is arranged on one side of the vertical plate, I-shaped sliding rails are symmetrically arranged at the top end of the U-shaped machining table, first sliding blocks matched with the I-shaped sliding rails are arranged at the top ends of the two sets of I-shaped sliding rails, and a second sliding block matched with the first sliding blocks is arranged at the top end of the U-shaped machining table. U-shaped frames are arranged on the sides, close to each other, of the two first sliding blocks, and thread rolling wheels are arranged in the U-shaped frames. The device has the beneficial effects that by arranging the mounting column, the height adjusting assembly and the arc-shaped burr scraping plate, after bolt thread rolling machining is completed, deburring treatment can be rapidly conducted on the outer wall of a bolt, the bolt does not need to be detached from thread rolling equipment by personnel to be independently cleaned, time and labor are saved, and the overall machining efficiency of the bolt is improved; and by arranging the connecting assembly, the arc-shaped burr scraping plate can be conveniently disassembled, assembled and replaced, the disassembling and assembling time of the arc-shaped burr scraping plate is shortened, and the bolt machining efficiency is further improved.

The utility model discloses a device matched with a thread rolling machine, which comprises a base and the thread rolling machine arranged on the base, the top of the base is connected with outer baffle plates on two sides of the thread rolling machine, a shaft rod is connected between the outer baffle plates on two sides, a sliding seat is sleeved on the shaft rod in a sliding manner, one side of the sliding seat is adjustably connected with an extension plate, and the extension plate is connected with a screw rod. A jackscrew rod is sleeved in the extension plate; an adjusting seat is further movably connected to the top, close to the extension plate, of the base, and a lead screw seat is movably connected to the top of the adjusting seat. Compared with the prior art, the device matched with the thread rolling machine has the advantages that the device can be conveniently matched with an existing thread rolling machine to be installed and used, and a workpiece can be positioned in an auxiliary mode.

This invention discloses a rotary demolding device for an expansion tank, comprising a mold body, which includes a lower mold, a template mold, and an upper mold. The lower mold has a first mounting groove, and the upper mold has a second mounting groove. When the lower mold and the upper mold are combined, the first and second mounting grooves form a complete assembly cavity. The template mold is installed within the assembly cavity. The interior of the mold body contains a threaded forming component and a transmission assembly, while the exterior contains a drive assembly. The transmission assembly is connected to the threaded forming component and the drive assembly. The drive assembly includes a motor, a transmission box, a rack, and a drive gear. The transmission box is bolted to the exterior of the mold body. One end of the rack extends into the transmission box and is linked to the motor via the drive gear, while the other end extends along the exterior of the mold body and is linked to the transmission assembly. This invention has the advantages of compact structure and high mold assembly efficiency.