66results about How to "Guarantee the quality of injection molding" patented technology

The invention discloses an injection mold and an injection molding process thereof. A lower mold base is fixedly arranged in the center of the upper end of an injection molding bottom cabinet, a mounting groove matched with an injection molding lower mold is formed in the lower mold base, and the injection molding lower mold is detachably mounted on the lower mold base through bolts; and vertically upward supporting columns are fixedly connected to the four corners of the upper end of the injection molding bottom cabinet correspondingly, a top plate is fixedly connected to the upper ends of the supporting columns, and a vertically downward first driving hydraulic cylinder is fixedly installed at the center position of the upper end of the top plate. According to the injection mold, the upper surface and the lower surface of an injection molding part are cooled at the same time, uniform cooling of the upper surface and the lower surface of the injection molding part is guaranteed, the forming quality of the injection molding part is guaranteed while rapid cooling and shaping of the injection molding part are improved, the injection molding part obtained after injection molding is completed is ejected out of a female mold on the injection molding lower mold through a demolding ejection plate, rapid demolding of the injection molding part is achieved, and the injection molding part machining efficiency is improved.

The invention discloses an injection mold. The injection mold comprises a fixed mold plate, fixed mold kernels, a movable mold plate, movable mold kernels, a mold core, an ejector sleeve, oil cylinders, a push plate, a bottom needle plate, a surface needle plate, a sliding block insert, a sliding block seat and a connecting rod mechanism, wherein a plurality of pairs of the fixed mold kernels and the movable mold kernels are arranged on the fixed mold plate and the movable mold plate, and a plurality of mold cavities are formed between each pair of the fixed mold kernel and the movable mold kernel; and actions of core pulling and pushing out of the mold are respectively controlled through the two groups of the oil cylinders, and the sliding block insert can slide out of the mold cavities like arcs through arc-shaped fit of the sliding block seat, the sliding block insert and the movable mold kernels during core pulling. By adopting the injection mold disclosed by the invention, injection molding of a plurality of products can be completed by closing the mold once while the finished product rate of the products is ensured, the production efficiency is greatly improved, market and production requirements are met, and the injection mold further brings a great deal of economic benefits to manufacturers.

A core pulling mechanism for an injection mold comprises a fixed die, a small sliding block and a big sliding block. A through hole is formed in the position, below the small sliding block, of the big sliding block. A limiting block is connected into the through hole in a sliding manner. A first limiting hole capable of being in limiting fit with the upper end of the limiting block is arranged in the lower portion of the small sliding block. A second limiting hole capable of being limiting fit with the lower end of the limiting block is formed in the upper end face of the fixed die. The length of the through hole plus the depth of the second limiting hole equals the length of the limiting block. The interval between the first limiting hole and the second limiting hole equals the sliding distance of the small sliding block relative to the big sliding block. A forcing limiting block for the small sliding block is arranged on the big sliding block. The interval between the forcing limiting block and the small sliding block equals the interval between the first limiting hole and the second limiting hole. The lower end of the limiting block is provided with a trapezoid or arc first protrusion. The second limiting hole is the same as the first protrusion in shape. Compared with the prior art, the core pulling mechanism has the beneficial effects of being small in size, simple in structure, good in use stability and long in service life.

The invention discloses an injection molding method of a battery shell grid baffle. The method comprises following steps of molding cooling temperature control, wherein the cooling temperature of a male mold is set to 80 DEG C, and the temperature of a female mold is set to 95 DEG C; and injection molding process control, wherein a product injection molding process comprises a four-segment injection molding filling state and a two-segment pressure maintaining stage. According to the injection molding method of the battery shell grid baffle, injection molding of the battery shell grid baffle can be efficiently completed, and the injection molding quality of the battery shell grid baffle can be ensured.

The invention relates to a chair foot upwarp rod type core loosing and mold locking mechanism of a plastic chair mold. The mechanism comprises a moving mold plate and a fixed mold plate, wherein a sprue plate is mounted on the fixed mold plate, chair seat and chair back insert blocks are mounted in the moving mold plate, chair seat and chair foot insert blocks are arranged on the moving mold plate and the chair seat and chair back insert blocks, a backrest insert block is mounted in the fixed mold plate, an upper mold locking lug is arranged on an upper core loosing slide block, one end of a mold locking rod is matched with the mold locking lug, an ejector pin is mounted on the external wall of the moving mold plate and jacks the downside of the other end of the mold locking rod, a compression spring is arranged in the sprue plate, a pressure lever penetrates through the compression spring and is inserted into the other end of the mold locking rod, and the compression spring presses the upside of the other end of the mold locking rod; a lower mold locking lug is arranged on a lower core loosing slide block, a lower mold locking groove is formed in the moving mold plate, the lower mold locking lug is matched with the lower mold locking groove, and a mold opening cylinder is mounted on side walls of the chair seat and chair foot insert blocks and is connected with the fixed mold plate. The simultaneous core loosing and demolding of upper and lower core loosing rods are achieved by combining secondary mold opening and upwarp rod type demolding, so that the product quality is good, and the production efficiency is high.

The invention discloses a two-color die for automobile instrument boards. The two-color die comprises a fixed die plate (1), a movable die rotation disc (2), a product (9), a first die and a second die, the fixed die plate (1) is provided with a soft plastic injection molding port (7) and a hard plastic injection molding port (8), the soft plastic injection molding port (7) is arranged on the first die, the hard plastic injection molding port (8) is arranged on the second die, one end of the first die is fixed on the fixed die plate (1), the other end of the first die is fixed on the movable die rotation disc (2), one end of the second die is fixed on the fixed die plate (1), the other end of the second die is fixed on the movable die rotation disc (2), and the first die and the second die respectively comprises a fixed die fixing plate (3), a fixed die (4), a movable die (5) and a movable die fixing plate (6). The two-color die for automobile instrument boards has the advantages of no generation of wastes, low cost, and guaranteeing of the injection molding quality through controlling the temperature of plastics in a runner.

The invention discloses a double-valve-needle type hot runner system comprising a spreader plate, a plate A installed at the lower end of the spreader plate, a main injection nozzle module, a hot sprue device and an air cylinder module, wherein the spreader plate is provided with a heating wire assembly. The main injection nozzle module comprises a main injection nozzle, a first heating coil, a main injection nozzle sleeve and a press sheet. The hot sprue device comprises a hot sprue installed in the plate A through a locating ring in a matched manner, a second heating coil, a first nozzle core, a second nozzle core, a heat insulation plate, a first heat insulation cap and a second heat insulation cap, wherein the heat insulation plate, the first heat insulation cap and the second heat insulation cap are installed at the lower ends of the first nozzle core and the second nozzle core. The first heat insulation cap and the second heat insulation cap are exposed in a first pouring gate and a second pouring gate which are located at the lower end of the plate A correspondingly. The air cylinder module comprises a face plate, a piston, a cylinder cover, a first valve needle and a secondvalve needle. A valve sleeve press block, a first valve sleeve and a second valve sleeve are installed between the face plate and the spreader plate. The lower end of the first valve needle sequentially penetrates through the first valve sleeve, the hot sprue, the first nozzle core and the first heat insulation cap so as to control the liquid discharge amount of the first pouring gate. The lowerend of the second valve needle sequentially penetrates through the second valve sleeve, the hot sprue, the second nozzle core and the second heat insulation cap so as to control the liquid discharge amount of the second pouring gate.

The invention relates to the technical field of injection molding technologies, and discloses a device and method for achieving one-time molding through multiple injection molding technologies. The device comprises an electric control box and an injection molding machine controlled by a PLC; the injection molding machine is used for completing at least one injection molding technology and comprises a mold closing system, the mold closing system comprises a mold and a hot runner, filling control structures corresponding to the injection molding technologies one to one are arranged in the mold, each filling control structure comprises a micro oil cylinder, a micro oil cylinder limiting sensor and an electromagnetic valve, the micro oil cylinder limiting sensors are connected with the input end of the PLC, the micro oil cylinders and the electromagnetic valves are connected with the output end of the PLC, and the electric control box is provided with injection molding technology switches corresponding to the injection molding technologies one to one. According to the device and method, the problems that the defects such as flash and burrs of a product are serious due to the fact that different injection molding parts are machined through a same injection molding technology, and the operation of changing the injection molding technology for ensuring the product quality is complex are solved.

The invention provides a mold-closing positioning structure of a slide block. Through the mold-closing positioning structure, the slide block is pushed to a preset position and is positioned so that a slide insert does not contact with other front parts, wear is avoided, a precision of an inner cavity of a mold is guaranteed and product injection molding quality is guaranteed. The mold-closing positioning structure comprises a front mold, a rear mold, an A plate, a B plate, the slide insert, a slide block and a wear block. A cavity is formed among the front mold, the rear mold and the slide insert. The tail part of the slide insert is fixedly connected to the slide block. The slide block is supported by the wear block. The wear block is fastened to the B plate. The mold-closing positioning structure is characterized in that the B plate is provided with a screw thread positioning hole; the upper part of the screw thread positioning hole passes through the corresponding position of the wear block; a positioning bolt is in a threaded connection relationship with the interior of the screw thread positioning hole from bottom to top; space is formed between the upper end of the positioning bolt and the upper end surface of the screw thread positioning hole; and a support pillar with a central slotted hole is arranged in the space.

The invention discloses an advanced ceramic part injection mold and injection molding method. The advanced ceramic part injection mold comprises a base plate. A lower mold plate is arranged at the right side of the upper end of the base plate. An ejection device is arranged inside the lower mold plate. The outer surface of the lower mold plate is provided with a cooling device. A closed separatingdevice is arranged at the left side of the upper end of the base plate. A connecting plate is arranged at the side, close to the center of the lower mold plate, of a support block in the closed separating device. Under the effect of locating pillars and locating holes, an upper mold plate and the lower mold plate are closed through the closed separating device; mixed and compounded slurry is located and guided through a locating annular piece. According to the advanced ceramic part injection mold and injection molding method, the injection mold is simple in structure and convenient to operate; the slurry is injected uniformly and efficiently; the mold can achieve rapid cooling and molding, and materials are convenient and fast to pick; the injection molding method is reasonable and efficient; the injection molding quality of parts is guaranteed; the work load of personnel is lowered; and the injection and molding efficiency is improved.

The invention belongs to the technical field of lens cone molds, and particularly relates to a cross-shaped double-flow-channel lens cone mold structure which comprises a base, a lower mold plate is arranged at the top of the base, two fixing plates are fixedly connected to the two sides of the lower mold plate correspondingly, sliding rods are inserted into the fixing plates in a sliding and penetrating mode, and the sliding rods are fixedly connected with the base. The part, located at the bottom of the fixing plate, of the sliding rod is sleeved with a first spring, and a containing groove is formed in the bottom of the lower die plate. In the injection molding process, after injection molding glue enters the glue inlet pipe, due to the fact that the distances from the main injection molding pipe to the branch pipes are the same, the time and pressure of the injection molding glue entering all the first annular pipes are the same, and therefore the consistency of products can be conveniently improved; and then the injection molding glue entering the first annular pipe simultaneously enters the second annular pipe through the two symmetrical connecting pipes located on the outer side of the second annular pipe, so that compared with a traditional injection mold arranged in a straight line, the injection molding efficiency is improved.

The invention discloses an injection molding mold with an efficient heat dissipation function for television surface frame production, which comprises an upper mold base and a lower mold base for realizing mold closing and mold opening states, an injection molding cavity is defined by mold closing between the upper mold base and the lower mold base, the upper mold base and the lower mold base are respectively provided with an opening-shaped ring cavity, the ring cavity is arranged along the contour of the injection molding cavity in a wrapping manner, and the opening-shaped ring cavity is communicated with the injection molding cavity. A ring channel cavity formed in the upper die base is sealed through an upper sealing cover, a ring channel cavity formed in the lower die base is sealed through a lower sealing cover, transverse channels are arranged on the left side and the right side of the ring channel cavity in a communicating mode respectively, a vertical channel is arranged on the transverse channel on each side in a communicating mode, and a first opening and closing mechanism for sealing or opening is arranged at the tail of each vertical channel. The first opening and closing mechanism enables the annular channel cavities formed in the upper die base and the lower die base to be communicated up and down or closed. By the adoption of the technical scheme, temperature rise or temperature reduction between the upper mold base and the lower mold base is uniform, and non-uniform injection molding heating or cooling in the mold closing state is avoided.

The invention discloses a novel lunate prosthesis, and a design and preparation method thereof. With overall consideration of the process constraint of a 3D printing molding technology and an injection molding technology, and through a mold design method based on a lunate geometry, the lunate can have contralateral lunate (lunate concave surface) and radiolunate joint (lunate convex surface), and targeted 3D forming reference surface selection and mold parting surface design can be performed on a lunate mold prepared through 3D forming. The mold includes an upper layer mold and a lower layer mold; an upper pouring port is manufactured in the upper layer mold; and a lower pouring port is manufactured in the lower layer mold, and the lower layer mold has a parting surface. Therefore, the injection molding quality of the lunate prosthesis can be guaranteed, and the lunate prosthesis can be conveniently taken out.

The invention discloses a single-cylinder multi-point hot runner system, which is characterized in that a cavity is formed in a cylinder body, and an annular piston is arranged in the cavity; the annular piston is in sliding fit with the inner wall of an accommodating cavity and divides the accommodating cavity into an upper annular air cavity and a lower annular air cavity which are sealed respectively; an end cover is arranged at the opening of the cavity and is in sealed connection with the inner wall of the cavity; hot runners which are communicated with one another are arranged in a flowdividing plate, and the flow dividing plate is arranged below the cylinder body; a feeding nozzle is connected with the flow dividing plate, and an internal runner of the feeding nozzle is communicated with an inlet of each hot runner; a plurality of needle valves are arranged, each needle valve comprises a valve body and a valve needle; the upper end of the valve body is connected with the flow dividing plate, an internal runner of the valve body is communicated with the hot runner, and the valve bodies are uniformly arranged around the central axis of the annular piston; the upper end of thevalve needle is connected with the annular piston, and the lower end is inserted into the valve body; the lower end of the needle valve is connected with a pouring gate of the mold, and the valve needle is used for controlling opening and closing of the needle valve. According to the invention, the opening and closing of the needle valves can be synchronously controlled, so that the dynamic balance performance of an injection molding product is enabled to be higher.

The invention discloses an injection mold for a side frame of a car boot. The injection mold comprises a moving template (1), a fixing template (2), a support block (3) and at least two products (4); the fixing template (2) is fixed at the upper part of the support block (3), and the moving template (1) is located at the upper part of the fixing template (2). The injection mold is characterized in that the moving template (1) and the fixing template (2) are internally provided with a flexible glue template group for performing the injection molding on the side frames of the products (4) and a hard glue template group for performing the injection molding on the part in the side frames of the products (4); the flexible glue template group comprises a first upper die core (5) arranged at the lower surface of the moving template (1) and a first lower die core (6) arranged at the upper surface of the fixing template (2). According to the invention, the injection mold for the side frame of the car boot can exchange mold inserts mutually, so that the processing efficiency is high, labor intensity is low and the production efficiency of the injection molding is high; moreover, the injection mold can meet the assembling requirement of automobile fittings.

The invention discloses an injection moulding method for touch pens, in order to guarantee the moulding quality, the touch pen can be achieved through the injection moulding of three sets of dies, placing the inner pen units in sequence into the main spray dies. the tough pen is injected though the sequence of sequence end, intermediate section and the fastening end, which improves the quality oftouch pen injection. íí

The invention discloses an injection mold with service life easy to control. The injection mold is composed of an upper mold base and a lower mold base which are controlled to open and close. Particularly, the injection mold is provided with a counter used for performing statics of the number of times of mold closing. The counter is provided with a counting chip, a visually visible reading window and an interface connected with a computer reset chip. The injection mold in use has the remarkable advantages that the counter is arranged to achieve the statics of the number of times of mold closing and visually present the statics, the maintenance of the injection mold is facilitated according to the number of times of using the injection mold, precision reduction caused by abrasion of the injection mold is effectively prevented, and injection molding quality of a formed product is guaranteed.

The invention discloses a high-strength and impact-resistant automobile stand column mold. The mold comprises a base, stand columns are arranged at the four corners of the base, an upper top plate is horizontally arranged at the tops of the stand columns, a plurality of lifting devices are arranged at the bottom of the upper top plate, an upper mold is arranged at the tail ends of execution shafts of the plurality of lifting devices, and an upper mold cavity is formed in the bottom of the upper mold; an injection molding opening is formed in the top of the upper mold, a fixing frame is arranged at the top of the base, a lower mold is arranged at the top of the fixing frame, a lower mold cavity is formed in the top of the lower mold, a plurality of through holes communicating with the interior of the fixing frame below the lower mold are formed in the bottom of the lower mold cavity, and ejecting columns are arranged in the plurality of through holes; and a fixing plate is horizontally arranged at the bottoms of the ejecting columns, ejecting blocks are arranged at the tops of the plurality of ejecting columns correspondingly, ejecting mechanisms used for driving the fixing plate to ascend and descend are further symmetrically arranged in the fixing frame on the two sides of the fixing plate, and a controller is further arranged on one side of the base. According to the mold, the formed stand columns can be conveniently ejected out, and the efficiency is improved.