47 results about "Undercut" patented technology

The invention relates to the technical field of foundation engineering, in particular to a sunken post-tensioning anti-floating anchor rod fabricated anchoring joint construction method which comprises the following steps: carrying out an anchor rod uplift bearing capacity test; constructing a cushion layer and manufacturing an anchor rod, wherein the anchor rod comprises a steel strand; an anchor rod construction point is positioned on the cushion layer; drilling and cleaning an anchor hole; lowering the anchor rod; performing primary normal-pressure grouting and secondary high-pressure grouting; maintaining the anchor rod; constructing a waterproof layer; binding reinforcing steel bars and installing a sealing anchor base; pouring structural bottom plate concrete; tensioning and locking the anchor rod; according to the construction method, it can be guaranteed that the site of the structural bottom plate is flat, operation of constructors and transportation of mechanical equipment are facilitated, the effect of protecting anchoring joints of the anchor rods is achieved, and the damage risk of the anchoring joints is reduced; compared with a traditional convex type or concave type anchoring node, the bottom plate can be reduced by a certain thickness, waterproof construction operation is simpler and more convenient, the labor material cost can be greatly reduced, the construction difficulty can be lowered, the self weight of the bottom plate is reduced, and the effect of shortening the construction period is achieved.

An internally grounded filter feedthrough having a filter capacitor connected to a feedthrough is described. The feedthrough comprises an insulator having an active conductive pathway extending to its device and body fluid sides, and a ground conductive pathway extending part-way through the insulator thickness from the insulator device side. An undercut extending into the insulator sidewall communicates with the ground conductive pathway but does not extend to the insulator device or body fluid sides or to the active conductive pathway. A braze seals the insulator sidewall to the ferrule and extends into the undercut so that the braze contacts the ground conductive pathway. That way, the braze provides a ground electrical path from a capacitor ground via to the ground conductive pathway in the insulator connected to the braze sealed to the ferrule.

An insert for use in vacuum forming that is locked in place with the vacuum forming material. More specifically, the insert includes one or more undercuts wherein the sheet that is vacuum formed around the undercut is locked without the need for additional manufacturing components and / or procedures. The process is particularly suitable for automotive applications.

The invention relates to a drive rod fitting 4 of a window or door, provided for fastening in a guide groove 1 of a sash 3 having undercuts 2, 2', with a drive rod 5, wherein the drive rod 5 has in cross-section a base plate 6 with webs 7, 7', 7" arranged perpendicular to the base plate 6 into which a coupling element 16 with a retaining member 21 rotatably arranged thereon engages and forms an integral assembly by rotating the retaining member 21, whereby the drive rod fitting 4 is held in the guide groove 1 in a non-removable but slidable manner.

A drilling tool for making an undercut within a solid material comprises a shaft extending along a longitudinal axis between a proximal end and a distal end, a gripping portion located at the proximal end, a gripping portion located at the distal end, comprising a blade having a helical course around the longitudinal axis, and a mechanical stop, arranged along the longitudinal extension of the shaft, adapted to create mechanical interference with an outer surface of the solid material so as to interrupt the translational advancement of the tool within the solid material. The shaft has at least a first diameter extending at least from the end portion to the mechanical stop.

A sealing arrangement with two components (2; 102; 202; 12) is disclosed. These components guide a fluid either axially from the first component to the second component or axially in the opposite direction. A first component (2; 102; 202; 12) has a recess around its opening (4) comprising an inner region (10; 110) and a circumferential step (1; 201). The circumferential step (1; 201) is shaped to form an undercut or baffle against which an O-ring (9) can be held. The recess creates a space between the opening (4) of the first component (2; 102; 202) and the opening (14) of the second component (12), through which the fluid can stretch the O-ring (9) radially outwards against the step (1; 201). Furthermore, a correspondingly shaped milling tool (20; 120; 220) is revealed.

A fenestration unit fenestration unit includes a frame having a receiver channel. The fenestration unit further includes an installation fin having a pedestal portion and a projecting portion extending from the pedestal portion. The pedestal portion has a cam insert receivable in each of a first undercut and a second undercut of the receiver channel, a clip insert receivable in each of the first undercut and the second undercut, the pedestal portion including a retention catch. The projecting portion has a body and a retention protrusion receivable in the retention catch for securing the projecting portion in an upright position. The installation fin is reversibly couplable to the frame with the projecting portion extending in an interior direction in a first configuration of a prone position and with the projecting portion extending in an exterior direction in a second configuration of the prone position.

This invention relates to the field of injection mold technology, and particularly to a double-slanted sliding block demolding mechanism and mold. The demolding mechanism includes a first slide block, a second slide block, and a driving component. The first slide block is slidably mounted on the lower mold. The driving component is connected to the first slide block and drives it to reciprocate along a first direction. The second slide block is guided and slidably mounted on the first slide block, and its sliding direction forms a preset angle with the first direction to generate displacement in a second direction when it moves with the first slide block. A sliding block insert for forming an undercut on the inner side of the molded product is slidably mounted on the second slide block, and its sliding direction forms preset angles with both the first and second directions to generate displacement in a third direction when it moves with the second slide block. During mold opening, the driving component drives the first slide block to slide, which in turn drives the second slide block to slide, thereby causing the sliding block insert to exit from the undercut on the inner side of the product. This invention effectively solves the technical problem in the prior art where conventional sliding blocks and angled ejectors cannot demold when the undercut on the inner side of the product has a spatial tilt angle.

This invention discloses a steel for fire extinguisher cylinders, its preparation method, and its application, relating to the field of iron and steel smelting technology. By controlling the elemental composition of the continuously cast billet, particularly the carbon and manganese content, not only can the steel maintain high strength under high-temperature conditions, but the high-temperature rotational undercut in the preparation of fire extinguisher cylinders is also eliminated. Simultaneously, while ensuring the steel's strength, it also provides good weldability and formability. By controlling the temperature parameters of the annealing process, combined with the elemental content in the continuously cast billet, the microstructure of the prepared steel can be controlled. Holding at the soaking temperature provided by this invention allows carbon dissolution in the steel to reach equilibrium, preventing excessive grain growth that could affect the steel's strength. Furthermore, by controlling the temperature of the over-aging stage, the distribution of carbides and the content of dissolved carbon are controlled, improving the steel's strength while preventing the fire extinguisher cylinders made from this steel from aging and becoming unusable during subsequent use.

The invention discloses a rubber back-off structure and a demolding process thereof, and belongs to the field of rubber back-off structures, the rubber back-off structure comprises a middle plate, and the middle plate is provided with an upper contact surface; the upper plate is provided with a lower contact face, and the upper plate can abut against the upper contact face of the middle plate through the lower contact face of the upper plate. According to the rubber inverted buckle structure and the demolding process thereof, after the middle plate is ejected out through the arranged cores and 2RT, a plastic plate is taken to be placed between the bottom plate and the middle plate, the 2RT is lowered, all the cores 4 are automatically ejected out, a product begins to be demolded, and the plastic plate is pulled out when the product enters a mold, so that the demolding efficiency of the product can be improved, and the mold processing cost is reduced; the problems that an inverted core is movable, the core needs to be manually taken out during demolding, the product demolding efficiency is low, a mold cavity is prone to being damaged by collision, the core is ejected out through 2RT, the distance is limited by a mold plate, burrs of a bottom plate are difficult to clean, the distance is short, and the mold demolding effect is low can be solved.

Clamping module system for a machine tool, comprising a set of several combinable clamping modules (1, 1.1,...,1.n), wherein each of the clamping modules (1, 1.1,...,1.n) has a base body (2) with a first clamping surface (3) for securing its position relative to the machine tool, and comprising a clamping arrangement arranged at least partially in the base body (2) for generating a clamping force directed against the first clamping surface (3), and wherein the clamping arrangement comprises a clamping bolt (4, 4.2) with a coupling device (15, 15.2) and a manually actuated clamping slide (7, 7.1, 7.2) which is in an angular position relative to the clamping bolt (4, 4.2), and wherein the clamping bolt (4, 4.2) and the clamping slide (7, 7.1, 7.2) have mutually interacting conical surfaces (9.1, 9.2, 9.3), and wherein the first clamping surface (3) has a perpendicular first bore (5) for introducing the clamping bolt (4, 4.2) into the base body (2), characterized by the fact that at least one fitting groove (10.1,...,10.6) is present on the first clamping surface (3), wherein the longitudinal axis (11) of the fitting groove (10.1,...,10.6) intersects the axial axis (6) of the first bore (5) at right angles and in the slot (10.1,..., 10.6) at least one T-nut (12.1,...,12.2) is arranged, which in the intended assembled state projects beyond the first clamping surface (3), wherein the T-nut (12.1,...,12.2) is removable and / or retractable from the first clamping surface (3) and the clamping bolt (4, 4.2) is interchangeable and axially movable in the first bore (5) in such a way as to prevent loss that the coupling device (15, 15.2) on the clamping bolt (4, 4.2) projects further towards the first clamping surface (3) than the T-nut (12.1,...,12.2) in the intended mounted state and wherein the clamping bolt (4, 4.2) is designed as an interchangeable part and the clamping module system includes different clamping bolts (4, 4.2), wherein at least one of the clamping bolts (4, 4.2) has a coupling device (15, 15.2) with undercuts for clamping on a T-slot table and at least one further clamping bolt (4, 4.2) has a coupling device (15, 15.2) for attaching a first clamping module (1, 1.1,...,1.n) to a second clamping module (1, 1.1,...,1.n), wherein the coupling device (15, 15.2) of the further clamping bolt (4, 4.2) has a second conical surface (9.2) which is designed for interaction with the conical surface (9.1, 9.2, 9.3) on the clamping slide of the second clamping module (1, 1.1,...,1.n).

This invention discloses a confined space undercut removal mold. The surface of the mold has a target product formed thereon. The target product has a groove, within which first and second undercuts are respectively disposed. The mold includes a lower mold, a first ejector pin, a slider, and a second ejector pin. A mold blank is disposed on the lower mold. The first ejector pin passes through the mold blank, and a first groove is provided on the side of the first ejector pin near the second undercut of the target product. The first ejector pin is used to lift the groove of the target product. The slider passes through the top of the first ejector pin and can move along the line connecting the first and second undercuts of the target product. A second groove is provided on the side of the slider near the first undercut of the target product. The second ejector pin passes through the mold blank and is used to lift the edge of the target product. This confined space undercut removal mold has a relatively simple overall structural design, enabling smooth and damage-free undercut removal in confined spaces. Demolding is achieved through a secondary lifting method, which is simple to operate and does not damage the undercut structure of the target product.

The utility model relates to the technical field of dies, and provides a die for forming a product with an inverted buckle, the die is used for forming a shell with a first buckle, the die comprises an upper die assembly and a lower die assembly which are matched with each other, and the upper die assembly and the lower die assembly are mutually closed to form a cavity for forming the shell; the upper die assembly comprises an upper die plate and an upper die core arranged on the upper die plate. The lower die assembly comprises a lower die plate, two supporting plates arranged on the lower die plate and lower die cores arranged on the two supporting plates. An ejection mechanism is further arranged on the lower die assembly, and a first inverted buckle forming device is arranged on the ejection mechanism. The first inverted buckle forming device comprises a base and a first sliding rod, and a protruding part is arranged above the first sliding rod. According to the mold, the first inverted buckle forming device is arranged, and the first sliding rod can obliquely move upwards relative to the lower mold core under the action of the ejection mechanism, so that the first sliding rod can be separated from the inner side of the first buckle, and a shell can be conveniently taken out.

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 discloses a welding seam forming auxiliary device, which comprises a welding seam forming block and a fastening mechanism, a fastening part of the fastening mechanism is detachably connected with the welding seam forming block, the welding seam forming block is arranged on the inner side of a part to be welded, and a welding space is formed by the welding seam forming block and the part to be welded. The welding seam forming auxiliary device can effectively improve the strength and the stability of a welding seam, greatly reduces the defects of pits, air holes, undercuts and the like on the back face of the welding seam, enables the appearance quality of the back face of the welding seam to be remarkably improved, and meets the high-standard appearance requirement of the rail transit industry.

This invention relates to a core-pulling and demolding device for injection molds and its working method. The core-pulling and demolding device for injection molds achieves two core-pulling demolding operations and sequential control in the same demolding direction through a rocker arm mechanism. It includes a mold frame, mold core, rocker arm demolding positioning mechanism, and a transverse demolding mechanism. The transverse demolding mechanism includes a first slider and a first slider wedge block that cooperate with each other. The side of the first slider has a cavity formed by an L-shaped undercut on the injection molded product. The mold core, second slider, first slider, and first slider wedge block together constitute the material cavity of the injection molded product. A dovetail groove is provided on the first slider or the first slider wedge block, and a slide rail corresponding to the dovetail groove is provided on the first slider wedge block or the first slider. The first slider and the first slider wedge block slide in a wedge shape through the dovetail groove. The first slider is fitted inside the second slider, and the bottom of the first slider is blocked by a limiting block, which is bolted to the second slider.

This invention provides a production mold and its manufacturing process that can replace 3D printed hollow injection molded products. The mold includes a mold frame with through holes arranged in an array on at least two opposite sidewalls; a first-direction core-pulling assembly comprising a plurality of first metal rods inserted into the mold frame through the through holes; and a second-direction core-pulling assembly comprising a plurality of second metal rods inserted into the mold frame at a different angle than the first metal rods, and interlocked with the first metal rods in a cross-tenon and tenon joint configuration within space, jointly defining the internal mesh-like hollow flow channels of the product to be molded. This invention utilizes the high elastic recovery characteristics of thermoplastic elastomers to achieve damage-free demolding of complex internal undercuts, significantly reducing costs and improving production efficiency compared to 3D printing. Furthermore, a temperature controller further shortens the molding cycle, and the resulting product exhibits excellent ventilation, heat dissipation, and elastic comfort.

This invention discloses a mold structure, comprising a template structure, a top block, and an ejection structure. The template structure includes a rear template and a base plate. An installation channel is formed on the top block to accommodate a runner, and the runner has a gate. The top block mates with the rear template to form an installation groove. The top block also mates with the rear template to form a receiving groove, within which an elastic element is disposed. A runner ejection assembly is connected to a drive structure to push the runner away from the installation channel. The elastic element pushes the top block away from the rear template when the undercut is disengaged from the glue position groove. An ejection plate is connected to the drive structure, and the ejection plate pushes the angled ejector to move, causing the undercut to disengage from the glue position groove, and pushes the ejection rod to abut against the product, thus pushing the product away from the installation groove. This invention, by setting the top block to fix the product during the angled ejector's disengagement of the undercut, avoids damage to the laser-engraved patterns on the product surface caused by the angled ejector pulling the product, ensuring the integrity of the laser-engraved patterns on the product surface.

Roller or needle bearing (1) with a bearing outer ring (2) and a set of rolling elements (3) for which a raceway (4) is formed on the bearing outer ring (2), wherein the bearing outer ring (2) is formed from a sleeve (5) having a hollow cylindrical section (6) forming the raceway (4) and a radially extending section (8) at one axial end (7) for the axial bearing of the rolling elements (3), wherein a cover (10) is arranged at the other axial end (9) of the sleeve (5) and is positively connected to the sleeve (5), wherein the sleeve (5) has a circumferential annular groove (11) on its outer circumference at the other axial end (9) which forms an undercut in the other axial end (9) in the axial direction (a), and wherein the cover (10) has a section (12) extending in the axial direction (a) which projects at least partially axially beyond the annular groove (11). where section (12) is transformed as follows:that it extends at least partially into the annular groove (11) over its entire circumference, characterized in that the cover (10) with its radially extending section forms an axial run-up for the rolling elements (3), wherein the sleeve (5) has a first outer diameter (d1) at the base of the annular groove (11) and a second outer diameter (d2) at its other axial end (9), wherein the difference between the two diameters is: , d 2 − d 1 > 0.06 mm as well as d 2 − d 1 < 1.6 ( d 3 − d 4 2 − s ) with d3 as the maximum outer diameter of the sleeve (5), d4 as the diameter of the raceway (4) and s as the thickness of the cover (10) in its radially extending region, and wherein the cover (10) has a thickness (so) in its radially extending region such that: 0.1 ( d 3 − d 4 2 ) < s 0 as well as s 0 < 0.6 ∗ ( d 3 − d 4 2 ) .

Disclosed is a method for repairing a Babbitt metal bearing shoe by laser cladding, metal plates are placed around a cladding range, thereby assisting in cooling a cladding area and accelerating heat conduction of a base material in the cladding area, and since the metal plates protrude out of a surface of the cladding area to form a step-like shape, thereby avoiding a phenomenon of an undercut of an edge side cladding channel; and by planning an area to be repaired, the cladding area is limited in a range as small as possible, and in addition, the metal plates are arranged around the cladding area for cooling, thereby avoiding a phenomenon of decladding of an original Babbitt metal layer caused by overheating deformation.

The present application relates to a station for rotary transverse cutting 5 of a material and a method. The present invention presents a station for rotary transverse cutting of a material, comprising a housing, sheeting cylinders with knives, rollers, characterized in that an upper sheeting cylinder (6) and a lower sheeting cylinder (7) arranged in the housing possess undercuts (19) as well as channels (12) for at least one pair of blades –for an upper knife (8) and a lower knife (9), wherein the upper sheeting cylinder (6) and the lower sheeting cylinder (7) are driven from a "drive" section (10), wherein at a certain stage, the upper knife (8) and the lower knife 9 arranged on the upper sheeting cylinder (6) and the lower sheeting cylinder (7) imitate an approximate vertical cutting movement.

It is desirable to produce a composite backing plate capable of restricting the relative movement of a friction pad, without the need for adhesives or potentially damaging post processing. As such, there is provided a backing plate mould (60) comprising a surface (61), a protrusion (63, 65) extending away from the surface, and an undercut arranged within the protrusion, the protrusion and undercut configured to form, in use, a composite backing plate including a corresponding void, and undercut; and / or the mould comprising a surface with a cavity, and an undercut arranged within the cavity, the cavity and undercut configured to form, in use, a composite backing plate including a corresponding projection, and undercut, wherein, wherein the mould is comprised of a resilient material configured, in use, to remain substantially rigid as a precursor cures within the mould, and to elastically deform to allow the composite backing plate, formed using the mould, to be removed from the mould.

The invention provides an undercut compensation finishing method and system combining blasting and heading machine operation, and the method comprises the steps: obtaining input information and a BIM model of a tunnel, the input information comprises confirmation information that the first blasting excavation of the tunnel is completed, and when the first blasting excavation is completed, the BIM model of the tunnel is obtained; a buffer layer with a preset thickness is arranged between the tunnel design contour line and the blasting excavation contour surface; sending a control command, wherein the control command comprises a command for scanning the rock surface after the first blasting excavation and acquiring rock surface point cloud data; and generating a digital under-excavation model based on the rock surface point cloud data scanned each time and the BIM model of the tunnel, and completing under-excavation compensation finishing of the tunnel based on the digital under-excavation model. The method can achieve the quantitative recognition and finishing of tunnel undercut, improves the contour precision, and guarantees the construction safety and efficiency.

The invention belongs to the technical field of flexible circuit boards, and particularly relates to an etching method for reducing etching at the tail end of a copper circuit of a flexible circuit board. A miniature photoresist pattern with a specific distance S and a specific length L is arranged in an open area at the tail end of a copper circuit in an Inner Lead area. The pattern can create a local'small spacing 'etching environment at the tail end of the circuit in the etching stage, and the etching rate at the position is effectively reduced, so that the downward etching of the tail end of the circuit and the formation of'bow' defects are remarkably inhibited; meanwhile, the micro pattern falls off due to the fact that the copper surface below the micro pattern is rapidly etched through, and no residue is left. According to the invention, the integrity of the circuit structure is effectively improved, and the problem of circuit collapse during chip binding is solved.

The application provides a mold ejection mechanism and a mold. The mold ejection mechanism comprises a transmission assembly arranged on a lower mold of the mold, a first sliding block arranged on one side of the transmission assembly, and a second sliding block and a top block which are sequentially arranged on the top of the transmission assembly. The transmission assembly, the first sliding block, the second sliding block, the top block and an upper mold of the mold form a cavity. The cavity is used for forming an undercut. The transmission assembly is driven to move away from the formed undercut. The first sliding block is connected to the upper mold through a first guide part and can move away from the undercut when the upper mold rises. The top block is arranged on an ejector in the lower mold. A second guide part is arranged between the ejector and the second sliding block. When the ejector drives the top block to slide in a preset direction, the top block can lift the undercut, and the second sliding block can move away from the undercut. The mold ejection mechanism can drive the second sliding block to retreat and avoid the undercut when the product is ejected, which is convenient for the ejection of the product and can save the driving structure and facilitate the realization of automatic picking by a mechanical hand.

The invention discloses an injection mold for a product with a round inverted buckle groove, and belongs to the technical field of bridge mold structure improvement, the injection mold comprises a front mold part and a rear mold part, the front mold part comprises a panel, a hot runner plate and a front mold supporting plate which are sequentially arranged from top to bottom, and a floating front mold plate is arranged below the front mold supporting plate; the rear mold part comprises a rear mold push plate, a rear mold supporting plate and a bottom plate which are sequentially arranged from top to bottom, a first insert is arranged on the front mold supporting plate, a wave extrusion adjusting block is connected to the side face of the lower portion of the first insert, a second insert is arranged on the front mold plate, a wave groove is formed in the second insert in the horizontal direction, and a movable wave is arranged in the wave groove. And the wave extrudes the adjusting block to make contact with the inner side of the wave, the wave is driven to the outer side of the wave groove, and during mold opening, the injection molding part drives the wave into the wave groove through inner buckle demolding force. A conventional inner sliding block structure is not needed, the structure is compact, outward driving force is not needed, and installation is convenient and fast.

The invention discloses a welding device for angle steel tower production, and particularly relates to the technical field of angle steel tower welding, the welding device comprises a supporting assembly, a positioning assembly is arranged on the supporting assembly, a driving assembly is arranged on the positioning assembly, the supporting assembly comprises two supporting brackets, and movable frames are slidably connected to the upper portions of the two supporting brackets. According to the welding device for angle steel tower production, through the combined structure of the reciprocating lead screw, the bidirectional motor, the electric telescopic rod and the rotary supporting block, the welding gun can achieve automatic angle deflection along with cooperation of the trigger frame and the trigger block, and the welding device can meet the welding angle requirements of angle steel of different specifications and different thicknesses in cooperation with height adjustment of the electric telescopic rod; and the horizontal infrared instrument is always kept horizontal under the action of the balancing weight, the flatness of the workpiece and the posture of the welding gun are monitored in real time, it is ensured that the welding process is stable, welding seams are uniform and full, welding defects such as insufficient welding, welding skips, undercuts and weld beading are effectively reduced, and the mechanical property of components is improved.

The invention relates to a method for weld analysis, in which, according to the invention, it is provided that - a weld surface (131) is determined, - a weld undercut volume (153) of a weld undercut (150) is determined on the basis of the weld surface (131), wherein the weld undercut (150) is formed by a region of the weld surface (131) which is directed below a surface (111) of a first component (110) having the weld (130) which points in the same direction as the weld surface (131), - a weld reinforcement volume (143) of a weld reinforcement (140) is determined on the basis of the weld surface (131), wherein the weld reinforcement (140) is formed by a region of the weld surface (131) which is directed above the surface (111) of the first component (110) which points in the same direction as the weld surface (131), - a ratio of the suture elevation volume (143) divided by the suture under-curvature volume (153) is determined, and then, if - if the ratio is less than 0.85 or greater than 1.15, a weld defect is detected, or - if the ratio is greater than or equal to 0.85 or less than or equal to 1.15, the specified limit values ​​(141, 151) for determining the volumes (143, 153) are shifted.

Mold 1 for continuous casting of metals with a mold body 2 in the form of a mold tube or a mold plate for attachment to a support structure 3 via screw connections 4, wherein the screw connections 4 each have a screw 5 and a screw nut 6, wherein the screw 5 has a shank 7 and a head 8 wider than the shank 7, wherein the head 8 is inserted into an undercut area 12 of a cooling water channel 13 of the mold body 2, with an insertion direction P parallel to the cooling water channel 13, wherein the shank 7 projects out of the undercut area 12 and extends to the screw nut 6 on the support structure 3, wherein a cooling water gap 28 of the cooling water channel 13 remains between a top surface 19 of the head 8 facing away from the shank 7 and the mold body 2, wherein at least one opening in the top surface 19 of the head 8 extends towards the cooling water channel 13 running groove 21 is arranged.

This application discloses a front mold structure, including a front mold insert, a runner plate insert, a water bridge, a front template, a sprue plate assembly, a panel, a hot runner assembly, and a front undercut demolding assembly. The front mold insert has a second runner that penetrates itself and connects to the molding cavity. The front undercut demolding assembly includes a slanted spring block, a first elastic element, and a first limiting element. The front mold insert has a slanted guide groove adapted to the shape of the slanted spring block. The end of the slanted spring block away from the panel has an undercut structure adapted to the undercut position of the product. The first limiting element is connected to the end of the slanted spring block near the panel and is used to restrict the slanted spring block from detaching from the front mold insert. The first elastic element is used to provide an elastic force to move the slanted spring block away from the panel. The slanted spring block has a clearance position that penetrates itself, and the second runner is located at the clearance position. The front mold structure of this application allows the injection point to be located at the position of the slanted spring block, avoiding interference between the injection point and the demolding assembly.