65results about How to "Smooth demoulding" patented technology

A precision mold provided with an inner side back-off core-pulling mechanism belongs to the field of thermoplastic plastic forming molds, and realizes first separation of a fixed mold plate and a movable mold plate and later separation of the movable mold plate and a movable mold base plate by utilizing the matching effect of mold opening force and a damping pin, and drives a sliding connecting piece to move by utilizing the separation of the movable mold base plate so as to promote a sliding insert to return for core pulling. And the first core-pulling insert and the second core-pulling insert are separated from the inner side inverted buckle in a sliding manner, so that smooth demolding of the inner side inverted buckle of a product is realized, the mold space is saved, the mold cost is saved, the mold structure is simplified, the stability of the production process of a plastic product is ensured, the production efficiency is improved, and the reject ratio is reduced.

This utility model belongs to the field of evaporator technology and discloses a high heat exchange efficiency microchannel heat exchange structure ice mold evaporator, including an evaporator body. Multiple microchannel heat exchange tubes are fixedly installed on the inner side of the evaporator body, and multiple microchannel holes are opened at the bottom of the evaporator body. Diversion pipes are fixedly installed on the left and right sides of the evaporator body. The comprehensive application of the microchannel heat exchange structure, inner surface strengthening treatment, and outer surface fin design significantly improves the heat exchange efficiency of the evaporator. Compared with traditional evaporators, the ice-making speed can be increased, producing the same amount of ice in a shorter time, meeting the demand for rapid ice making. High heat exchange efficiency means that, under the same ice-making capacity, the required refrigeration compressor running time is shortened, and energy consumption is reduced. Actual testing shows that using the evaporator of this utility model reduces the energy consumption of the ice-making system, effectively reducing operating costs.

This invention discloses a water treatment agent production apparatus, comprising a first mold body and a second mold body that can be opened relative to each other. A plurality of mold cavities are spaced apart within the first and second mold bodies. A feed inlet communicating with the mold cavities is located at the upper end of the first and second mold bodies. The apparatus is characterized in that each mold cavity includes a plurality of spaced-apart forming cavities, with a connecting channel between adjacent forming cavities. The uppermost forming cavity is connected to the feed inlet. A heat dissipation cutting mechanism is provided on the second mold body to cut off the connecting channel and dissipate heat from the material within the forming cavity. A cam linkage mechanism is also provided on the second mold body to drive the heat dissipation cutting mechanism to insert into or exit from the connecting channel. This invention is ingeniously conceived, with a simple and practical mechanism, enabling rapid molding and cooling of the material within the mold cavities. It facilitates easy demolding, fast material discharge, labor-saving operation, low production cost, and high efficiency.

The utility model belongs to the technical field of building new material plate production, and particularly relates to a building new material plate compacting device which comprises an operation table, a supporting table is fixedly connected to the outer wall of the operation table, a compacting mechanism is arranged on the supporting table, a demolding mechanism is arranged below the compacting mechanism, and the demolding mechanism comprises a frame body. And a long plate and a short plate are arranged in the frame body. According to the new building material plate compacting device, after a plate is formed, a hydraulic cylinder b is controlled to drive a long plate and a short plate to return to original positions, so that the plate is preliminarily separated from the inner walls of the long plate and the short plate, then a hydraulic cylinder c is controlled, and at the moment, a material ejecting plate fixed to the output end of the hydraulic cylinder c can eject the formed plate out of a frame body; by means of the design, the demolding process is smoother, the plate is directly ejected out of the frame body through the ejector plate, an operator can conveniently, rapidly and conveniently take materials, the production efficiency is greatly improved, and the labor intensity is reduced.

This utility model discloses a demolding device for a rectangular ring mold, specifically relating to the field of rectangular ring mold technology. It includes a main frame, on which a first driving mechanism is mounted, and an ejector mechanism is connected. A casting mechanism is mounted on the main frame, containing a mold core. A driving system is also mounted on the main frame. The casting mechanism includes a first template, a second template, a third template, and a fourth template. The mold core includes a first mold core, a second mold core, and a third mold core. The first mold core has an opening. A protrusion is fixedly mounted on the bottom surface of the second mold core. The first mold core is mounted on the second template. The second mold core is mounted on the third template. The third mold core is mounted on the fourth template. As a further embodiment of this utility model, the first driving mechanism includes a first cylinder, which is fixedly mounted on the bottom surface of the main frame. Using this structure, rapid and stable demolding of the rectangular ring mold can be achieved.

The utility model discloses an automatic demoulding device for aluminium alloy ingot, include: frame body, be used for aluminium alloy ingot to carry out demoulding, mould mechanism, be located in the bottom of frame body, be used for to aluminium alloy and carry out shaping, drive mechanism, be located in the top of frame body, with mould mechanism transmission connection, to drive mould mechanism and carry out up and down movement in frame body, limiting mechanism, be located in the inside of drive mechanism, to make mould mechanism steady and carry out demoulding, prevent aluminium alloy ingot and easily drop. When needing demoulding, through starting drive mechanism and driving mould mechanism and carrying out downward movement in frame body, make the aluminium alloy ingot in mould mechanism and carry out upward movement, and then make aluminium alloy ingot and eject and separate mould mechanism, and rotate limiting mechanism and make aluminium alloy ingot and leave frame body, to eject the mode of replacement knock, can automatically demoulding aluminium alloy ingot in mould, and aluminium alloy ingot demoulding is more smooth, and effectively improves aluminium alloy ingot separation efficiency.

The application relates to the field of casting molds, in particular to a casting mold facilitating mold stripping for casting production, which comprises a base, the top end of the base is fixedly connected with a first driving platform, the top end of the first driving platform is symmetrically and slidably connected with two sliding frames, the compression cavity, the compression seat, the first rack, the gear and the second rack are arranged, when the sliding frames continue to compress the first spring during mold closing, the second rack drives the first rack and the compression seat to move through the gear, negative pressure is generated in the compression cavity and the open cavity, the gas generated when the metal melt fills is continuously sucked and discharged, the defects such as pores and empty bags on the surface or in the interior of the casting are avoided, and the casting forming quality is improved; meanwhile, positive pressure is generated in the compression cavity during mold opening, the contact surface between the sand core and the inner wall of the mold cavity is blown by the gas, the adhesion generated due to high-temperature sintering is reduced, and therefore the sand core can be smoothly stripped.

The utility model relates to mould accessory technical field, and disclose a kind of slider track extension mould frame, the utility model is by slider track extension, and the size of mould frame body remains unchanged, while meeting the length demand of slider track, avoid the increase of mould frame size.This, reduce the consumption of mould frame material, reduce processing cost, while also facilitate the transportation, installation and use of mould frame, improve the overall economy and practicality of mould, the length of slider track is greater than the length of traditional and the slider track matched with this mould frame body, can provide longer distance guiding and support for longer stroke slider, effectively avoid the problems such as deviation, shaking of slider in sliding process, ensure the accuracy and stability of slider movement, improve the machining precision and production efficiency of product, good compatibility, connecting structure is fixed by bolt on mould frame body, and connecting mode is simple and reliable, easy to install and disassemble, and high strength wear resistance is good.

The utility model discloses a pouring tooling of super-long type CS coil, including mould core, frame subassembly, bottom plate and top plate, frame subassembly dismountably set up in the periphery of mould core, bottom plate and top plate set up in mould core and frame both ends, mould core includes a plurality of sub-mould core, first locating piece and second locating piece, the plurality of sub-mould core is distributed in the annular shape, the first locating piece is located in the first locating piece, and the second locating piece is located in the second locating piece. The mutual contact surfaces of every two adjacent sub-mold cores are inclined surfaces, the plurality of sub-mold cores are encircled to form a main mold core, the first positioning block and the second positioning block are arranged at the two ends of the main mold core, the first positioning block penetrates through the bottom plate, and the second positioning block penetrates through the top plate. The mold core is arranged to be of a detachable structure and comprises the sub-mold cores, the first positioning block and the second positioning block, the contact faces of the sub-mold cores are all inclined faces, through cooperation of the inclined faces, friction force is reduced, the demolding process is smoother, demolding convenience is greatly improved, and meanwhile the risk that a coil is damaged due to demolding is reduced.

The present application relates to a kind of nitrile glove and its preparation method.The nitrile glove includes outer layer and inner layer, the outer layer is prepared by first nitrile emulsion, the inner layer is prepared by second nitrile emulsion.The nitrile composition is prepared nitrile glove, and no chlorine water hardening treatment is needed to be carried out to be smooth demoulding, no chlorine residue, and the nitrile glove obtained not only maintains good tensile strength and elongation, but also pinhole rate is not promoted, meets the product requirement of qualified quality.

The utility model relates to the technical field of demoulding of injection moulds, in particular to a mouse shell injection mould capable of demoulding smoothly, which comprises a demoulding cylinder, a cover plate is movably arranged at the top of the demoulding cylinder, an annular support plate is arranged in the demoulding cylinder, and gas is conveyed into a first annular pipe through a gas conveying pipe by external gas conveying equipment. Gas is conveyed into a gas inlet pipe and a second annular pipe through a first annular pipe, then the gas is sprayed out through a plurality of spray heads in the second annular pipe, the injection-molded mouse shell can be gradually blown through gas pressure sprayed out by the spray heads, the mouse shell is slowly loosened, and then a hydraulic rod is started to drive an annular movable plate to move downwards; meanwhile, a supporting block at the top of the annular movable plate and the male die can move downwards, and the loose mouse shell outside the male die is matched with the placement disc to work, so that the mouse shell is demoulded, and meanwhile, the mouse shell is smoother during demoulding.

This utility model discloses a plastic pipe clamp injection mold, belonging to the field of injection mold technology, including a static injection mold: a static mold panel, a static mold base plate, and a static mold plate; and a moving injection mold: a moving mold base plate, a moving mold foot, a moving mold base plate, a moving mold plate, a bottom pin plate, a top pin plate, a demolding ejector pin, and a demolding ejector block. This utility model, through the mirror-symmetrical static and moving mold plates, can injection mold multiple plastic pipe clamps at once, significantly improving production efficiency and meeting the needs of mass production. Smooth demolding effectively avoids product damage during demolding, improving product qualification rate. The circulating water channel design within the static and moving mold plates ensures uniform heat dissipation during the cooling process of the injection molded parts, reducing the generation of internal stress and improving the mechanical properties and service life of the products. This utility model has advantages such as high-efficiency production, convenient demolding, uniform cooling, and high mold closing accuracy, which can significantly improve the production efficiency and quality of plastic pipe clamps and has broad application prospects.

The utility model discloses a crucible forming double-station hydraulic machine, which relates to the technical field of crucible manufacturing equipment and comprises a mold base and first hydraulic machines arranged at two ends of the top of the mold base along the length direction of the mold base. A locking mechanism is arranged at the bottom end of the interior of a storage groove in the mold base, a driving mechanism is connected to the upper portion of the locking mechanism, the driving mechanism is driven by the locking mechanism, the multiple first limiting plates can be driven to be spliced and separated, the first limiting plates are separated during demolding, the contact area between the mold and a finished product is reduced, and the production efficiency is improved. Therefore, friction force is reduced, the demolding process is smoother, the demolding speed is increased, the second hydraulic machine can eject out a finished product, friction force generated by direct ejection in a traditional demolding mode is avoided, and the outer arc wall of the finished product is further protected against damage.

The utility model belongs to high -voltage electric porcelain technical field, concretely is a kind of anti-deformation pottery clay wine jar forming die, including support frame, still include: spraying assembly is set to support frame top inside;Send mud component, is set to support frame top outside;Moving assembly is set to support frame both sides inside;Die is real component, is set to moving assembly moving end;The utility model provides a kind of anti-deformation pottery clay wine jar forming die, before the two sides pottery clay mould is real, and spraying release agent on pottery clay mould inner wall, and release agent can reduce pottery clay and the adhesion of mould, ensure that pottery clay smoothly demould, avoid deformation or damage, secondly, it helps to ensure that pottery clay wine jar keeps stable shape during forming process, avoid partial pressure and deformation, furthermore, release agent can improve demoulding efficiency, reduce friction, to speed up production process, it can also protect mould surface, reduce wear and tear, extend the service life of mould, and reduce maintenance frequency.

The utility model relates to the technical field of material processing, in particular to a plate die-casting die convenient to demould. The plate die-casting die convenient to demould comprises a base, an installation frame, a hydraulic rod, a die-casting plate and a die frame, the installation frame is installed on the base, the hydraulic rod is installed on the installation frame, the telescopic end of the hydraulic rod is connected with the die-casting plate, and the die frame is installed on the top of the base. Through the arrangement of a connecting rod, a connecting plate, a top plate, springs, a mounting plate, a first two-way screw rod, a first guide rod and an extrusion frame, after the die casting process is completed, when a hydraulic rod retracts to drive a die casting plate to reset, the four springs can automatically push the top plate to move upwards, so that a plate subjected to die casting is jacked up, the demolding step is greatly simplified, and the demolding efficiency is improved. The requirement of manual intervention is reduced, and the production efficiency is improved.

The utility model discloses a welding device for dissimilar materials relates to welding technical field, including the carrier plate for bearing copper material and aluminum material, and the carrier plate is provided with the fixture for fixing the position of copper material and aluminum material both, the welding device still includes the sink of can accommodate carrier plate and make the cooling liquid immerse the welding area between copper material and aluminum material, and the spray assembly of the fixed or movable mode to the welding area spray cooling liquid is selected, the welding device still includes the pusher tooling of being located in the sink and being used for to the welding piece of copper material and aluminum material welding after forming and pushes, the utility model discloses on the basis of having carrier plate, clamp, immersion sink and switchable fixed / movable spray assembly, further add the pusher tooling of being located in the sink. After welding, the product is often difficult to take out directly because of the edge or burr jam and other reasons, and the pusher tooling can directly lift or push out the product, and the material taking is convenient.

The present application relates to the technical field of bipolar plate, in particular to a liquid flow battery flow channel bipolar plate with positive and negative staggered rib parts and wave-shaped reinforcement, comprising: a bipolar plate substrate, a flow channel unit, a rib part unit; a first surface is provided with a first flow channel unit and a first rib part unit, a second surface is provided with a second flow channel unit and a second rib part unit, the first flow channel unit and the second rib part unit correspond to each other in positive and negative directions of the bipolar plate substrate, and the second flow channel unit and the first rib part unit correspond to each other in positive and negative directions of the bipolar plate substrate; the flow channel unit is a wave-shaped flow channel, a chamfer is arranged between the first rib part unit and the first flow channel unit, and a chamfer is arranged between the second rib part unit and the second flow channel unit. The present application makes the flow channel bipolar plate have higher structural rigidity and fracture resistance when bearing bending load.

This utility model proposes a demolding mechanism for an injection mold, including a sprue plate connected between a top plate and a moving mold plate, the bottom end of the moving mold plate connected to a male mold core, a support plate connected between a bottom plate and a fixed mold plate, the fixed mold plate sleeved with a female mold core, and the lower part of the female mold core engaging with the support plate. The bottom plate is equipped with a demolding mechanism, which includes a first hydraulic cylinder, a toothed block, a gear, a connecting column, and a paddle. The bottom end of the support plate has a first groove with an opening facing downwards, and the top end of the bottom plate has a second groove. The first and second grooves together form a through-type slide. The toothed block is slidably disposed within the slide. The drive end of the first hydraulic cylinder is connected to the toothed block. Symmetrically arranged on both sides of the first groove are first grooves with openings facing downwards and communicating with the first groove. A gear is disposed within the first groove. The lower part of the connecting column is connected to the gear, and the upper part of the connecting column is connected to the paddle. By providing a demolding mechanism, smooth demolding is achieved. Simultaneously, the mold structure is simple and easy to operate, improving production efficiency.

The invention discloses a multidirectional core-pulling automobile door panel mold, relates to the technical field of injection molding molds, and aims to solve the technical problem that in the prior art, core-pulling and demolding are difficult due to the fact that internal inverted buckles exist in drum-shaped and other special-shaped mounting holes, and the multidirectional core-pulling automobile door panel mold comprises an automobile door panel injection mold body, a static mold body and a movable mold body. And the static mold and the movable mold are closed to form an injection molding cavity. The multidirectional core-pulling automobile door panel mold disclosed by the invention has the beneficial effects that the composite core mechanism formed by alternately splicing the inclined panels and the flat panels which can stretch out and draw back in the radial direction is arranged in the mold closing cavity of the static mold and the movable mold, so that one-time high-precision forming and lossless demolding of complex special-shaped mounting holes in an automobile door panel are realized; a series of technical problems that in the prior art, due to the fact that a traditional core-pulling mechanism cannot process a complex hole structure with the middle diameter larger than the end opening diameter or with an internal step, demolding interference, product strain, flash, difficulty in guaranteeing size precision and the like are caused are solved.

This utility model relates to the field of tank production technology, specifically a tank stretching tooling mold, including a fixed base, a placement seat and an L-shaped bracket fixed above the fixed base, a hydraulic cylinder fixed above the L-shaped bracket, an upper mold fixed below the hydraulic cylinder, an oil tank and a nozzle A fixed above the placement seat, a piston rod movable inside the oil tank, a connecting rod connecting the piston rod and the hydraulic cylinder, an oil pipe connecting the nozzle A and the oil tank, a lower mold and an air tank fixed inside the placement seat, a spherical rod fixed to the outer wall of the hydraulic cylinder, a nozzle B fixed above the air tank, and an exhaust pipe connected to the outer wall of the air tank. This utility model achieves lubrication, friction reduction, and cooling during stretching through the oil tank assembly, reducing defects such as scratches and wrinkles on the tank, extending the mold life, ensuring smooth demolding, and improving the quality and efficiency of the stretched finished product.

This utility model discloses a sliding demolding structure for side-grooved molded parts in injection molding, relating to the field of injection molding technology. It includes an upper mold and a lower mold, with an upper mold core and a lower mold core respectively corresponding to the upper and lower molds. A main slide block is also provided between the upper and lower molds, slidably connected to the lower mold. An inclined guide post is fixedly connected to the lower side of the upper mold. An inclined guide hole is provided on the main slide block corresponding to the guide post, and the guide post is slidably connected to the main slide block through the guide hole. A grooved molded part is connected to the side of the main slide block facing the product. This molded part consists of molded part A, molded part B, and a secondary slide block. Molded part A and molded part B can be assembled into a product groove contour structure. Molded part B is linked to the main slide block, and the secondary slide block is linked to molded part A and is also linked to the main slide block through a delay structure. This structure enables step-by-step demolding of the side groove, ensuring processing quality, reducing product stringing and deformation, and improving the yield rate.

The utility model relates to the technical field of stamping devices, in particular to a stamping device for machining. Comprising a frame body, a stamping assembly is arranged on the frame body and comprises a telescopic rod at the top of the frame body, one end of the telescopic rod penetrates through the frame body, a mounting groove is formed in one end of the telescopic rod, and a plurality of stabilizing assemblies are arranged at the top of the mounting groove and penetrate through the frame body; a limiting groove is formed in the bottom in the frame body, and clamping assemblies are arranged on the limiting groove and the mounting groove; a mounting part is mounted in the mounting groove, the clamping assembly in the mounting groove is limited and clamped in the mounting part, and an upper mold is arranged at the bottom of the mounting part; a push plate slides in the limiting groove, a first push rod is arranged on the top of the push plate, and an adjusting assembly is arranged in the limiting groove. A lower die is arranged in the limiting groove and located above the push plate, a first push rod movably penetrates through the lower die and pushes the mechanical part, and a clamping assembly in the limiting groove clamps and fixes the lower die. And a soundproof cover is arranged outside the frame body. According to the stamping device for machining, the stamping die is convenient to replace, and demolding is easy after mechanical parts are stamped.

The utility model discloses a demoulding device for an injection product. The demoulding device at least comprises a core-pulling mechanism and a demoulding mechanism, the core pulling mechanism at least comprises a core pulling air cylinder and an insert arranged at the output end of the core pulling air cylinder. The demolding mechanism comprises an outer demolding assembly arranged on the fixing block and an inner demolding assembly penetrating through the fixing block. Wherein the outer demolding assembly is located on the periphery of the injection molding product, the inner demolding assembly at least comprises a guide block and an inclined ejection piece located in the injection molding product, and the inclined ejection piece penetrates through the fixing block. The mold has the beneficial effects that the mold cavity obliquely arranged on the injection molding product is demolded through the core pulling mechanism, and then the injection molding product is demolded through the demolding mechanism, so that the injection molding product is completely and well demolded, and the demolding quality is improved.

This utility model relates to the technical field of injection molds, and in particular to an injection molding structure combining a sliding block and a slanted ejector. It includes a front mold assembly, a rear mold assembly, a sliding block mechanism, and a slanted ejector mechanism. The front mold assembly has a front mold core, the rear mold assembly has a rear mold core, and the sliding block mechanism has a sliding block insert. The front mold core, rear mold core, and sliding block insert cooperate to form an injection cavity. The sliding block insert is located on the side of the injection cavity and is used to injection mold the side wall of the plastic part. The slanted ejector mechanism has a slanted ejector rod, and the sliding block insert has a guide slanted hole. The slanted ejector rod passes through the guide slanted hole, thereby cooperating with the sliding block insert to injection mold the undercut on the side of the plastic part. In summary, this design effectively handles the undercut on the side of the plastic part, while simplifying the mold structure, reducing manufacturing costs, and improving demolding reliability.

The utility model relates to the technical field of injection molding process especially is used to a front mould oblique position structure for injection mould, including the front mould fixed plate, the water gap board, the backing plate, the front mould frame and the front mould kernel that set up in proper order, still include the front mould insert piece and the row position guide pillar, the front mould insert piece is worn and is set in the front mould kernel, and under the guidance of the mould kernel inclined plane of front mould kernel, oblique inserts injection molding cavity, thereby injection molding forms the oblique recess of plastic part, the one end of row position guide pillar is fixedly connected in the water gap board, its other end passes through the backing plate and the front mould frame, and with the front mould insert piece forms the lock joint of movable, makes row position guide pillar drive front mould insert piece and exits from the oblique recess. Above all, the utility model through the lock joint and water gap board linkage drive of ingenuity, has simplified the mould structure significantly, has improved injection molding efficiency, has guaranteed the plastic part forming quality. Its modular design and high performance price ratio make it easy to manufacture, maintain and market promotion.

The utility model provides a demolding structure convenient for a plastic uptake mold, which is applied to the technical field of plastic uptake molds and is characterized by comprising a mold seat and a forming mold fixedly arranged on the mold seat, a sliding block is arranged on the side wall of the forming mold in an inclined sliding mode, and the inverted buckle groove is formed in the sliding block. When the sliding blocks slide from bottom to top, the sliding blocks gradually approach inwards so that the buckles can be separated from the back-off grooves. Compared with the prior art, the mold has the technical effects that the sliding blocks are driven by demolding power after a product is subjected to plastic molding to slide obliquely upwards, and the sliding blocks are gradually close to each other inwards under the action of the first inclined surface and the second inclined surface, so that the buckles are separated from the inverted buckle grooves, and the product is smoothly demolded.

This invention provides an external thread core-pulling structure for injection molds, including a moving mold, a fixed mold, and several molding components. The moving mold includes a power source, and the molding components include molding inserts, which include a first molding insert and a second molding insert. Each molding insert has an external thread for molding the outer wall of the injection molded part and several undercut molding cavities with protruding rings. The molding cavities are located on the first and second molding inserts. The power source drives the first and second molding inserts to move in opposite directions, gradually separating them from the injection molded part for core pulling. Compared with existing technologies, this external thread core-pulling structure for injection molds uses a top plate as a power source to drive ball bearings to move within the first and second guide slides, causing the first and second molding inserts to move in opposite directions for core pulling. This eliminates the need for an additional power source, resulting in a simple structure, low cost, small footprint, stable core pulling, and applicability to various undercuts such as external threads, protruding rings, and grooves, thus having a wide range of applications.

The utility model relates to punch die technical field discloses a kind of split punch dies, including bottom plate, the bottom of bottom plate is fixedly connected with two fixed plate a, the bottom of two fixed plate a is fixedly connected with support plate a, the bottom of bottom plate is fixedly connected with driving assembly, the right side of driving assembly is fixedly connected with sliding block, the outside of sliding block is fixedly connected with rack, the top of support plate a is fixedly connected with two guide rails, the inner wall of two sliding blocks is slidably connected in the outside of guide rail, the top of support plate a is fixedly connected with fixed column, the outside of fixed column is rotatably connected with gear, two rack and gear are engaged. In the utility model, cylinder a drives sliding block synchronous reverse motion, makes positioning plate accurate positioning and power-assisted stripping, cylinder b drives clamping plate accurate clamping, guarantees stamping stability, and each component is orderly reset, can promote production efficiency and product quality.

The application discloses a reverse-docking forming assembly and belongs to the technical field of automobile part processing, which comprises a lower die plate, a mounting seat matched with a product to be processed is arranged on the lower die plate, a forming assembly is arranged at one end of the mounting seat, the forming assembly comprises a base and two symmetrically arranged first inclined joints, the two first inclined joints are respectively arranged on the left side and the right side of the base and are spaced apart from the base, movable inserts are arranged on the left side and the right side of the base, the left side and the right side of the base are inclined surfaces, the inner side of the insert is connected with the base as an inclined surface, and the outer side of the insert is used for forming the inner wall surface of the opening of the control arm, a nitrogen power piece is arranged between the base and the insert, and the nitrogen power piece drives the two inserts to be folded upwards along the inclined surface of the base. The application can form the reverse-docking structure of the control arm and smoothly demould, thereby improving the production efficiency and reducing the processing cost.