Mechanical ejector

Abstract

The invention relates to a device, in particular an inclined ejector (1), for demolding a casting part (14) having a reverse buckle (141) from a cavity plate (93) for a casting or injection molding process (9), comprising:-a guide element (2); -an ejection element (3) guided in the guide element (2) in a translational sliding manner in a first direction and having a first end connectable to an ejection head (4); -a pushing element (5) which is guided in the guide element (2) in a translational sliding manner in a second direction, the first direction and the second direction enclosing a guide angle which is not equal to 0 DEG; -a connecting mechanism (6) designed to mechanically connect the translational movement of the ejection element (3) and of the pushing element (5) in their first and second directions, respectively; -stabilizing means (61) arranged between the first end of the ejection element (3) and the guide element (2) in order to reduce a deviation of the ejection element (3) transverse to a first direction of a translational movement of the ejection element (3) or transverse to a second direction of a translational movement of the pushing element (5).

Description

Technical Field

[0001] This invention relates to an apparatus for undercut demolding within a mold used for plastic injection molding or a mold used for die casting. This apparatus is also known as an ejector device. Background Technology

[0002] In the injection molding of any type of injection molded or die-cast part, it is necessary to use an ejector to demold the casting or injection molded part from the mold. Demolding the casting or injection molded part by the stroke or relative movement of the ejector relative to the mold plate (especially relative to the ejector plate) represents the prior art for this purpose. The ejector plate is a movable mold plate that transmits the stroke generated by the ejector cylinder to the ejector within the ejector device. Demolding can occur in a direction perpendicular to or at an angle to the ejector plate. Ejectors, known as straight ejectors, operate in a plane perpendicular (i.e., 90°) to the horizontal plane of the ejector plate. Ejectors, known as tilting ejectors, operate in a plane at an angle less than or greater than 90° to the horizontal plane of the ejector plate. In injection molds or die-casting molds with certain areas (with the aforementioned undercuts) due to the geometry of the part to be demolded, it is not possible to demold the casting or injection molded part solely by the vertical relative movement of the straight ejector relative to the ejector plate. Therefore, the existing technology uses a tilting ejector, which completes the undercut demolding process through the non-vertical relative movement of the tilting ejector with respect to the ejector plate.

[0003] This type of ejector device is installed within an injection mold or die-casting mold and is actuated during ejection by a tilting ejector that can form an ejector pin. This type of tilting ejector is propelled by a hydraulic cylinder, also known as an ejector cylinder, and generates a stroke through which, in several embodiments known in the art, the tilting ejector moves through the mold in the demolding direction of injection molding or die casting. In doing so, the tilting ejector can be guided by a sliding device or by a channel, particularly by a hole within the mold plate. Ejector devices achieved by means of tilting ejectors are typically configured relative to the sliding device or channel such that it redirects the stroke movement of the tilting ejector in the demolding direction to a direction of movement tilted to it. Thus, the tilting ejector moves in a plane formed at an angle less than or greater than 90° relative to the stroke direction of the ejector cylinder or ejector plate. This angle (also known as the demolding angle or release angle) is essentially determined by the shape and angular position of the sliding device or channel within the mold plate. This angle is formed by a corresponding undercut (particularly relative to the ejector plate) and is called the undercut angle. It can have so-called negative geometric values, such as between -15° and -30° relative to a horizontal plane that is formed as a plane parallel to the mold plate and / or the ejector plate. Alternatively, the undercut angle can have so-called positive geometric values, such as between +15° and +30° relative to a horizontal plane.

[0004] Ejector devices known in the prior art do not use sliding devices or channels to guide the tilting ejector within the mold plate. EP 2 899 010 B1 discloses a device for demolding an injection-molded part via a tilting ejector within an ejector device, wherein the tilting ejector is mounted via a guide bushing and indirectly driven by an ejector cylinder via a rack and pinion mechanism. The ejector cylinder and the tilting ejector are indirectly connected to each other via a rack. The tilting ejector is designed as a rack in its portion facing the second end; this portion is referred to herein as a slider. The slider is guided by frictional engagement with a first channel within the guide bushing and engages in a form-locking contact with a push rod within the guide bushing; for this purpose, the portion of the push rod facing the first end is also designed as a rack. The push rod is also guided by frictional engagement with a second channel within the guide bushing. Due to the frictional guidance of the portion of the tilting ejector (i.e., the slider) and the portion of the push rod facing the first end within the guide bushing, no additional guidance of the tilting ejector within the mold is required. The guide bushing can be mounted within a support of the mold plate. The rack portion of the slider interacts with the rack portion of the push rod in such a way that the linear motion of the push rod is laterally transmitted to the slider via the interlocking helical gear mechanism of the two rack portions, and the tilting ejector thus changes from the first position to the second position. A first drawback of this solution is that manufacturing the rack portions is technically complex and becomes uneconomical, especially for longer rack portions. Another drawback is that the corresponding rack portions must be formed on the relatively long portions of both the slider and the push rod to achieve a large stroke.

[0005] Another drawback of this solution is that, due to the geometry of the corresponding rack sections—one with a smaller cross-section and therefore less material, and the other with a larger cross-section and therefore more material—this results in a body with varying cross-sections and varying bending strength. Therefore, the force input of the form-locking between the two meshing rack sections occurs over a body with varying cross-sections and varying bending strengths, which can lead to localized stress peaks due to bending. The varying cross-section of the rack region has a particularly adverse effect on the fatigue strength of the slider due to the superimposed alternating tensile-compressive loads. Consequently, the tilting ejector experiences high loads on its second-end-facing portion (i.e., the slider), while the push rod's first-end-facing portion also experiences high loads. The load on the slider is relatively high relative to the push rod due to the additional lateral force component caused by the transmission action between the helical push rod and the helical slider. The relatively high load on the second-end-facing portion of the tilting ejector is exacerbated by the load on its first-end-facing portion, which absorbs the forces of the mold (i.e., the ejector plate) through the ejector head; these forces are superimposed on the demolding force and further load the tilting ejector.

[0006] Another disadvantage is that the so-called transition point of the form-locking force input between the two rack sections is located in the region of the slider facing the second end, and therefore the demolding force (thrust) of the tilt ejector is geometrically far from the undercut region to be demolded. Another disadvantage is that the guide position of the tilt ejector within the mold via the guide bushing is geometrically spaced from the location of the demolding force introduced into the ejector device, making mechanical guidance impossible for the tilt ejector on a longer portion. A lever arm is formed between the ejection point directly below the undercut region to be demolded and the transition point between the push rod and the slider, whereby the aforementioned alternating bending stress of the slider is superimposed with the aforementioned alternating tensile-compressive load of the slider. In embodiments of such tilt ejectors with a large stroke, this can particularly lead to mechanical instability in the portion of the tilt ejector facing the first end. The described structural-mechanical disadvantages can cause the demolding force to be limited by such a tilt ejector, which in turn directly affects the size of the undercut to be demolded in each case, and indirectly affects the size and weight of the injection-molded part to be demolded. Another drawback is the potential for pitch error between the two rack sections, such as due to missing teeth or damaged tooth flanks, which can lead to complete failure of the tilting ejector. Furthermore, the gear and rack drive mechanism with friction shafts in such tilting ejectors requires permanent lubrication, which can result from minor wear between the racks or contamination from externally introduced dust. The resulting friction, along with all the aforementioned drawbacks, can cause premature wear and failure of the tilting ejector. In the event of damage to the slider or push rod, all components of the tilting ejector must also be replaced, as the guide bushing is also exposed to increased wear due to its structural mechanical loads and additional friction.

[0007] The existing solutions do not provide an ejector device with low wear and low deformation, which provides high demolding force, especially for the production of large and / or heavy injection molded or die-cast parts with undercuts.

[0008] Therefore, the object of the present invention is to further develop the straight ejector or inclined ejector of the ejector device for plastic injection molds or die-casting molds described at the beginning, such that, on the one hand, it has high mechanical stability and robustness to generate large demolding force, while at the same time being simple and low-wearing, and on the other hand, it includes a small number of replaceable and extendable components, preferably of similar design, in order to eliminate the disadvantages of the prior art. Summary of the Invention

[0009] This objective is achieved by an inclined ejector device having the features of Scheme 1 and a subordinate scheme for use in an undercut demolding device for use in injection molding or die casting molds.

[0010] Another implementation is specified in the subordinate scheme.

[0011] Therefore, an apparatus, more specifically an inclined ejector, is proposed for demolding a cast part with undercuts from a cavity plate used in a casting or injection molding process, comprising: -Guiding element; - An ejector element, which is guided in the guide element in a first direction in a translational sliding manner, and the ejector element has a first end that can be connected to an ejector head; - A pushing element, which is guided in the guiding element in a second direction by means of translational sliding, wherein the first direction and the second direction form a guiding angle not equal to 0°; - A connecting mechanism configured to mechanically connect the ejector element and the pusher element to translational movements along a first direction and a second direction, respectively; and - A stabilizing device, arranged between the first end of the ejector element and the guide element, to reduce the offset of the ejector element in a first direction of translational movement of the ejector element and / or in a second direction of translational movement of the push element.

[0012] The first set of functional elements of the equipment (i.e., a mold for injection molding or die casting, in which the tilting ejector according to the invention is used) is formed by mold plates of different configurations that perform different functions within the equipment. Different embodiments of the mold plates may specifically include fixed, non-displaceable mold plates (cavity plates) and non-fixed, displaceable, movable mold plates (core plates). Additional displaceable mold plates may be provided by ejector plates. The displaceable mold plates can be moved within the equipment from a first position (the so-called molding position) to a second position (the so-called demolding position) by different ejector cylinders (hydraulic cylinders).

[0013] Another set of functional elements of the tilting ejector according to the invention for an ejector device (for demolding undercuts within the aforementioned device) includes: different embodiments of additional ejection elements that perform different functions within the ejector device. These different embodiments of additional ejection elements can, on the one hand, constitute a first push element mounted on and arranged therein as a guide element for displacement, and on the other hand, constitute a second ejection element mounted on and arranged therein as a guide element for displacement, which are displaced within the device from a first position to a second position by means of a first ejection cylinder and an ejection plate.

[0014] The third set of functional elements of the tilting ejector device for the aforementioned device according to the present invention includes: a guide element having a channel and a guide groove disposed therein. The channel accommodates a push element or an ejector element disposed therein that is displaceable. The push element and the ejector element operably connected thereto by a connecting mechanism move within the device from a first position to a second position via the aforementioned ejector plate and via the aforementioned first ejector cylinder.

[0015] A first advantageous aspect of the solution according to the invention is that a first ejector cylinder arranged in an apparatus for a casting or injection molding process can generate a stroke that is transmitted to an ejector plate via a first mechanical connection, and further transmitted from the ejector plate to a push element via a second mechanical connection, and further transmitted from the push element to an ejector element and an ejector head disposed thereon via another mechanical connection (connection mechanism). The apparatus is arranged such that the surface direction (i.e., plane) of the ejector plate, whether movable or immovable, extends transversely to the displacement direction, i.e., perpendicular to or inclined to the direction of movement of the push element and / or the ejector element connected thereto. By displacement of the ejector element, the ejector head disposed on the ejector element can move in the ejection direction. Within the apparatus, the ejector plate represents a first embodiment of a movable mold plate. An ejector cylinder (typically a hydraulically driven unit) can be particularly arranged within the apparatus, between a base plate and an ejector plate, wherein the base plate and end plates constitute another embodiment of a immovable mold plate arranged within the apparatus, and isolate the apparatus from the outside. The stroke generated by the ejector cylinder passes through the ejector plate and optionally causes the pusher element to be displaced from a first position to a second position in its longitudinal direction via the pusher element extension, the displacement occurring in the first direction.

[0016] A first channel for a movable pushing element is accommodated within a guiding element, the guiding element being represented as a type of guide body or guide sleeve housed within a core plate (movable mold plate) in the equipment, the core plate being represented as an embodiment arranged as a movable mold plate within the equipment. The core plate accommodates at least one guiding element in at least one receiving portion and at least one ejector head in at least one recess. The ejector element is also accommodated along the longitudinal direction of the guiding element via a second channel in a second direction.

[0017] The ejector element is operably connected to the push element via a connecting mechanism, which constitutes a mechanical connection between the push element and the ejector element. Due to the connection between the push element and the ejector element via the connecting mechanism, the displacement of the push element from a first position to a second position along a first direction causes the ejector element to simultaneously shift from the first position to the second position along a second direction. Therefore, the ejector head arranged on the ejector element can shift from the first position to the second position along the second direction of the ejector element and eject the undercut of the cast part from the core plate (movable mold plate).

[0018] Another advantageous aspect of the solution according to the invention is that the connecting mechanism and the stabilizing device formed therein are arranged geometrically close to the connection between the ejector and the pushing element, and the first end of the ejector facing the ejector head. In this way, a high thrust and thus a high release force can be generated in the vicinity of the space close to the ejector head, and therefore near the critical point of the ejection process, for ejecting the cast part having at least one undercut from the cavity plate.

[0019] In addition, the stabilizing device ensures that the ejector device can always return to the same, reproducible position after the ejection process, and that the ejector head can always perform the ejection operation at the same, reproducible position within the device.

[0020] Another advantage of the solution according to the invention is that the mechanical properties of the bending-rigid, maintenance-free ejector and pusher elements in the tilting ejector according to the invention can be advantageously combined with the characteristics of a maintenance-free and mechanically high-load guide element, which can be specifically designed as a guide sleeve. Here, bending-rigid means that the ejector and pusher elements can be specifically designed as solid, particularly flat, round bars, with high resistance to bending, torsional, and lateral force moments. The ejector and pusher elements have low elasticity and, in particular, no spring characteristics along their respective longitudinal directions (first and second directions). Therefore, the tilting ejector according to the invention has high fatigue resistance compared to tilting ejector solutions designed only for finite life, including spring- or elastically designed linkages or ejector assemblies with lower mechanical strength.

[0021] Another advantage of the solution according to the invention lies in the adaptability of the tilting ejector, which can be adapted to the geometry of equipment used in casting or injection molding processes by lengthening or shortening the pushing element, particularly to the number, size, weight, and corresponding spacing of the mold plates used therein. For this purpose, the pushing element can be advantageously lengthened by adding a pushing element extension to one end facing the second end. This pushing element extension can be achieved by an extension that can be inserted into or screwed into the second end of the pushing element.

[0022] Another advantage of the solution according to the invention is that the operational connection between the ejector element and the pusher element is established by a connecting mechanism. Here, the connecting mechanism includes two recesses, each located between the first ends of the ejector element and the pusher element and a guide element, forming a guide for the elongated drive member of the connecting mechanism. The recesses may have a wedge-shaped or rectangular cross-section. The respective first ends of the recesses, the ejector element, and the pusher element face the ejector head; the second ends of the recesses, the second ends of the ejector elements, and the second ends of the pusher elements face away from the ejector head.

[0023] Here, on the other hand, the connecting mechanism includes a drive member located in a recess, extending between the ejector element and the push element, and removably fastened to the push element. The drive member is preferably fastened to the recess in the push element by a screw connection via a fastening device, the drive member being displaceably guided in the longitudinal direction of at least one of the recesses in the push element or the ejector element. Other conceivable fastening devices for fastening the drive member to the push element may be rivet connectors or pins located in holes located in the region of the recess in the push element and in the drive member.

[0024] According to another advantage, the tilting ejector according to the invention includes a stabilizing device within the connecting mechanism. The stabilizing device is formed by receiving the driving element in the recesses of the ejecting element and the pushing element. Therefore, the stabilizing device, as a component of the connecting mechanism, is arranged in the recess between the first end of the ejecting element and the first end of the pushing element and the guide element to stabilize these elements against elastic bending deformation, i.e., to reduce or prevent the ejecting element from deviating laterally in the first direction of its translational movement (in other words, the ejection direction). The resulting stabilizing effect aims to improve the operational reliability of the tilting ejector so that the lateral force acting on the tilting ejector can be effectively reduced, particularly causing the ejecting element to deviate laterally in the first direction of the translational movement of both the ejecting element and the pushing element, until and including preventing undesirable mutual opening between the first region of the ejecting element facing the ejector head and the first region of the pushing element facing the ejector head.

[0025] According to another advantage, a driving action from the pusher element to the ejector element can be generated through a connecting mechanism extending between the pusher element and the ejector element. The resulting driving action is determined, on the one hand, by the orientation of the channel in the core plate, formed between the ejector element and the pusher element, which are guided through the channel, and on the other hand, by an inclination angle, which represents the orientation of the recess in the ejector element for receiving the drive member relative to the longitudinal extension of the ejector element, and / or, the orientation of the recess in the pusher element for receiving the drive member relative to the longitudinal extension of the pusher element. Therefore, the geometric relationship established between the pusher element and the ejector element has a direct influence on the magnitude of the thrust action, which can be generated by the connecting mechanism between the ejector element and the pusher element together with the stroke of the ejector plate. The thrust action is realized through the connecting mechanism and the drive member contained therein, mechanically equivalent to the action of a cam within the thrust transmission mechanism. By selecting the tilt angle of the connecting mechanism, different transmission actions can be generated between the pushing element and the ejector element due to the cam-like effect equivalent of the driving element. These transmission actions mechanically correspond to either an acceleration-enhancing transmission or a deceleration-enhancing transmission. The larger the tilt angle of the connecting mechanism and the greater the stroke of the pushing element, the greater the transmission action from the pushing element to the ejector element. Conversely, the smaller the tilt angle of the connecting mechanism and the smaller the stroke of the pushing element, the smaller the transmission action generated on the ejector element. Therefore, by adjusting the orientation and tilt angle of the driving element of the connecting mechanism between the pushing element and the ejector element, the acceleration or deceleration of the undercut demolding process can be achieved using the tilting ejector according to the invention. When the driving element points away from the ejector head, the tilt angle of the driving element of the connecting mechanism on the ejector element corresponds to 0°. Similarly, when the driving element points away from the ejector head, the tilt angle of the driving element of the connecting mechanism on the pushing element corresponds to 0°. The tilt angle of the driving element on the pushing element relative to the longitudinal axis of the pushing element is greater than 90° to generate acceleration. The component is tilted at an angle of less than 90° relative to the longitudinal axis of the driving element to produce deceleration.

[0026] In a preferred embodiment, the tilting ejector according to the invention has a guide element that is preferably rotationally symmetrical, and in particular cylindrical in design. The guide element designed in this way can be accommodated within a receiving portion of a core plate in an apparatus for casting or injection molding processes. The core plate is illustrated as an embodiment of a mold plate with grooves, into which the ejector head of the ejector element can be accommodated.

[0027] The guide element is fixed to the core plate by a fixing element that is received on one hand in a receiving portion of a first part of the guide element located at the end of the guide element facing the ejector head, and on the other hand, preferably fixed to the core plate by a screw connection. The guide element may have channels for receiving an ejector element and a pusher element, through which the ejector element and the pusher element are guided in a translational sliding manner along a first direction and a second direction, respectively. The orientation of the channels within the guide element forms a guide angle relative to each other. In a first embodiment of the guide element, this guide angle may be particularly acute, i.e., between 10° and 20°, and is formed between the respective longitudinal axes of the ejector element and the pusher element. In another embodiment of the guide element, this guide angle may be between 10° and 45°. In addition to the channels therein for receiving the pusher element and the ejector element, a preferred embodiment of the guide element may have a guide groove in which the drive element of the connecting mechanism can be received when the pusher element is moved back from the ejection process. In a preferred embodiment of the tilting ejector, the drive member can be moved to different positions within the guide groove of the guide element by a pushing element. A first position can constitute a mechanical stop in the portion of the guide element located at the end of the guide element away from the ejector head, and a second position can constitute the opening of the guide groove in the portion of the guide element located at the end of the guide element facing the ejector head. Another position can be located outside the guide groove, and therefore outside the guide element. A first advantage of the preferred embodiment is that the tilting ejector can generate maximum stroke because the drive member can be fully inserted into the guide element, within the guide groove. Another advantage of the preferred embodiment is that by inserting into the guide groove, the drive member receives additional mechanical fixation within the guide element, in addition to the stabilizing mechanism provided by the connecting mechanism, particularly in the case of short ejection strokes and maximum ejection forces of the ejector device. This further contributes to the robustness and fatigue durability of the tilting ejector.

[0028] In another embodiment, the guide element may be designed to have a channel but no guide slot. Such an embodiment can be used in ejector devices where there is no requirement for a maximum ejection stroke, such as in short-stroke ejector devices.

[0029] Another advantage of the solution according to the invention lies in the possibility of modularly combining elements of similar design and / or size to provide different embodiments of the tilting ejector according to the invention, particularly for different devices for casting or injection molding processes, with cavity plates of different sizes and weights and core plates having ejection geometries and / or different numbers of mold plates. For example, in ejector devices designed to be so variable, similarly designed guide elements can be combined with complementary, similarly designed ejection and push elements. The similarity of the guide elements is characterized in particular by their dimensions, the arrangement of channels within the guide elements, the selection of guide angles between channels, and the cross-section and diameter of the channels, wherein the ejection and push elements are mounted independently of each other in the channels. For example, different embodiments of the guide elements, different embodiments of the tilting ejector, and different effects can be achieved by additionally combining the push and ejection elements by means of a connecting mechanism, so that either an acceleration or deceleration effect on the part to be ejected can be produced in different areas of the ejector device. By utilizing the many possible combinations of the components of the tilt ejector, a modular construction kit can be produced, which can provide tilt ejectors of different sizes and embodiments for use in the production of various types of ejector devices.

[0030] Brief description of the attached figures The details of the invention will be explained in more detail with reference to the exemplary embodiments shown in the accompanying drawings. In one and the same drawings, the same reference numerals for parts include both the singular and plural forms of the illustrated elements. In the drawings: Figure 1a A side view of an apparatus for a casting or injection molding process is shown, illustrating several embodiments of an inclined ejector and a casting component with multiple undercuts still engaged with the ejector apparatus, representing the state before the molding process (molding position). Figure 1b A side view of an apparatus for a casting or injection molding process is shown, illustrating several embodiments of an inclined ejector and a casting component with several demolding portions, representing the situation immediately following an undercut ejection (demolding position). Figure 2a , Figure 2b A side view of a first embodiment of the tilting ejector is shown, wherein the ejector head is fastened to the first end of the ejector element in the initial position (forming position); Figure 3a , Figure 3b A perspective view of another embodiment of the tilting ejector in the intermediate position (during the ejection process) is shown; Figure 4a , Figure 4bA perspective view of a first embodiment of an inclined ejector in its final position (demolding position) is shown, without the ejector head fastened to the first end of the ejector element; Figure 5a , Figure 5b , Figure 5c A side view of another embodiment of the tilting ejector is shown, wherein the connecting mechanism is positively oriented (speed ratio) between the pushing element and the ejecting element. Figure 6a , 6b 6c shows a side view of a first embodiment of the tilting ejector, wherein the connecting mechanism is in a negative orientation (reduction ratio) between the pushing element and the ejecting element. Figure 7a , Figure 7b , Figure 7c A perspective view, side view, and cross-section of the guide element are shown; Figure 8a , Figure 8b , Figure 8c A side view and a perspective view of an embodiment of the ejector element are shown; Figure 9a , 9b 9c shows a side view and a perspective view of an embodiment of the actuating element; Figure 10a , Figure 10b , Figure 10c , Figure 10d , Figure 10e Side views and perspective views of different embodiments of the drive are shown; Figure 11a , 11b Figure 11c shows a side view of another embodiment of the tilting ejector, another embodiment of the ejector element, another embodiment of the drive element, and another embodiment of the recess within the push element and the ejector element. Detailed Implementation

[0031] Figure 1a Different embodiments 11, 12, and 13 of a tilting ejector are shown. This tilting ejector is located between two mold plates 95 and 96 of an apparatus 9 used for casting or injection molding processes, and between a core plate 92 and a cavity plate 93, in a first position (forming position), i.e., the cavity plate 93 is closed, and the casting component 14 (having demolding areas 141, 142, 143 and undercuts 1411, 1421, 1431) is about to be formed. Ejector elements 31, 32, 33 and corresponding drive elements 62 are in the first position (forming position). In this first position, the ejector heads 41, 42, 43 are still form-locked with the undercuts 1411, 1421, 1431 of the casting component 14.

[0032] Pushing elements 51, 52, and 53 are each extended by pushing element extensions 71 and 72. Pushing element extensions 71 and 72 are located within the ejector assembly, and / or pushing elements 51, 52, and 53 are detachably fastened to the ejector plate 91 by fastening devices 8, which are in particular screw connections. The ejector plate 91 is in a first position (molding position). Guide elements 21, 22, and 23 are located within the ejector assembly and fastened to the core plate 92 by a receiving portion 24 and a fixing element 27 (not shown). Before the ejection process, the ejector heads 41, 42, and 43 of the tilting ejectors 11, 12, and 13 are in the first position, within grooves 921, 922, and 923 (not explicitly shown) arranged in the demolding area of ​​the core plate 92.

[0033] Figure 1b Embodiments 11, 12, and 13 of a tilting ejector are shown, located between two mold plates 95 and 96 of an apparatus 9 for casting or injection molding processes, in a second position (demolding position) within free space 98, wherein the core plate 92 is open, immediately following the ejection process and before the demolding of the cast part 14 having demolding areas 141, 142, 143 and undercuts 1411, 1421, 1431. The ejector plate 91 has moved to the second position (demolding position), and the ejector cylinder (not shown) of the ejector apparatus generates an ejection stroke 97 of the ejector plate 91.

[0034] Embodiment 11 of the tilting ejector has a drive member 62 in a neutral position, characterized by a tilt angle β of 90° between the longitudinal axis of the drive member 62 and the longitudinal axis of the push element 51. Displacement of the push element 51 from a first position to a second position causes displacement of the ejector element 31, during which there is no speed difference between the push element 51 and the ejector element 31 and therefore no acceleration occurs during the ejection process. The push element 51 is extended by a push element extension 71 in such a way that the demolding region 141, which has undercuts 1411 and is raised relative to the demolding regions 142, 143, can be ejected.

[0035] Embodiment 12 of the tilting ejector has a drive member 62 in an acceleration position, characterized in that the tilt angle β between the longitudinal axis of the drive member 62 and the longitudinal axis of the push element 51 is greater than 90°, or an angle between +100° and +135° relative to the neutral position of 90°, such that the drive member 62 is tilted in a first direction toward the ejector head, and an acute angle is formed between the first end of the push element and the protruding end of the drive member 62. The displacement of the push element 52 from the first position to the second position causes the ejector element 32 to accelerate, resulting in a positive change in velocity between the push element 52 and the ejector element 32 during the ejection process. The push element 52 is extended by a push element extension 72 in such a way that the demolding region 142, which has an undercut 1421 and is angled / tilted relative to the demolding regions 141, 143, can be ejected.

[0036] Embodiment 13 of the tilting ejector 1 has a drive member 62 in a deceleration position, characterized in that the (negative) tilt angle β between the longitudinal axis of the drive member 62 and the longitudinal axis of the push element 51 is less than 90°, or an angle between 80° and 45° relative to the neutral position of 90°. The displacement of the push element 53 from the first position to the second position in Embodiment 13 causes deceleration of the ejector element 33, resulting in a negative velocity change between the push element 53 and the ejector element 33 during the ejection process. The push element 53 is extended by a push element extension 72 in such a way that the demolding region 143, having an undercut 1431 and angled / tilted relative to the demolding regions 141, 142, can be ejected.

[0037] The size of the free space 98 formed between the core plate 92 and the cavity plate 93 depends on the ejection stroke 97 of the ejector plate 91. The ejector plate 91 is moved from a first position to a second position (demolding position) by a hydraulic ejector cylinder (not shown) of the ejector device via the ejection stroke 97. During this step of the ejection process, the ejector heads 41, 42, 43 are no longer engaged with the undercuts 1411, 1421, 1431, but are connected to the casting component 14, particularly adhesively. During the ejection process, the ejector heads 41, 42, 43 move to the second position (demolding position), in which process, the grooves 921, 922, 923 arranged in the core plate 92 are removed. The corresponding push elements 51, 52, 53 are moved from the first position (forming position) to the second position (demolding position) by means of the ejection stroke 97, and the corresponding push elements 51, 52, 53 are mounted to slide in the corresponding channels (not shown) within the guide elements 21, 22, 23. The ejection stroke 97 is achieved by the tilting ejector 1 and is essentially determined by the lengths of the push elements 51, 52, 53 and / or the push element extensions 71, 72, and the movement of the ejector plate 91. Due to the bending rigidity design of the push elements 51, 52, 53 and the ejector elements 31, 32, 33, they can be moved to the second position (demolding position) without guidance and mechanical support outside the guide elements 21, 22, 23 and within the formed free space 98. Ejector heads 41, 42, 43 are arranged on the ejector elements 31, 32, 33 and held in the second position (demolding position) within the free space 98. Ejector heads 41, 42, 43 may be provided with notches 411, 421, 431 for disengagement from the undercuts 1411, 1421, 1431 of the casting component 14. The casting component 14 is placed on the ejector heads 41, 42, 43. In subsequent process steps, the cavity plate 93 can either remove the casting component 14 by adhering (not shown) or by removing it from the device 9 (not shown) used for casting or injection molding processes.

[0038] Figure 2a , 2bEmbodiment 13 of the tilting ejector in the first position (forming position) is shown. The drive member 62 is located within the portion of the guide element 23 facing away from the ejector head 43, at the mechanical stop of the guide groove 25 (not shown) facing away from the ejector head 43. In the portion of the guide element 23 facing the ejector head 43, there is a receiving portion 24 for accommodating a fixing element 27 (not shown). The guide element 23 can be detachably connected to the core plate 92 (not shown) by means of the fixing element 27 (not shown). A guide angle α is formed between the longitudinal axis of the push element 53 and the longitudinal axis of the ejector element 33. A tilt angle β is formed between the longitudinal axis of the push element 53 and the longitudinal axis of the drive member 62; a tilt angle γ is formed between the longitudinal axis of the ejector element 33 and the longitudinal axis of the drive member 62. The ejector head 43 and the notch 431 are designed to be angled, so that the demolding area 143 (not shown) and the undercut 1431 (not shown) therein can be received by embodiment 13 of the angled ejector during the molding process (not shown) and ejected during the subsequent demolding process (not shown). In this case, the angled shape means that the molding angle established during molding corresponds to the angle of the undercut 1431 (not shown).

[0039] Figure 3a , 3bEmbodiment 12 of an inclined ejector at the start of the ejection process is shown in a second position (after the molding process). The drive element 62 is located within the portion of the guide element 22 facing the ejector head 42 (not shown) in the guide groove 25. The longitudinal axis of the push element 52 forms a guide angle α relative to the longitudinal axis of the ejector element 32. The guide angle α is determined by the angles of the longitudinal axes of the channels 28, 29 relative to each other within the guide element 22. The longitudinal axis of the drive element 62 forms a (positive) tilt angle β greater than 90° relative to the longitudinal axis of the push element 52, and a tilt angle γ greater than 90° relative to the longitudinal axis of the ejector element 32. The push element 52 and the ejector element 32 are preferably designed as flat round bars and guided within the guide element 22 in their complementary channels 28, 29. The guide element 22 may preferably have a flat portion 261 on at least one side of its cylindrical surface, the flat portion 261 extending in the direction of the longitudinal axis of the guide element 22, and by means of the flat portion 261, the guide element 22 can be received in a groove complementary to the guide element 22 within the core plate 92 (not shown) in a rotationally fixed manner. Therefore, during operation of the equipment 9 for casting or injection molding processes, the torsion acting on the tilting ejector 12 is absorbed by the core plate 92 (not shown), which is typically a solid design, improving the stability and fatigue durability of the ejector device, and thus improving the stability and fatigue durability of the equipment 9 for casting or injection molding processes. A receiving portion 24 arranged in the first part of the guide element 22 accommodates a fixing element 27 (not shown), by which the guide element 22 can be detachably fastened to the core plate 92 (not shown).

[0040] Figure 4a , 4bEmbodiment 13 of the tilting ejector at the end of the ejection process is shown in the third position (demolding position), wherein a reverse drive action (deceleration) can be applied from the push element 52 to the ejector element 32 by the "negative" orientation of the drive element 62. The ejection stroke 97 of the ejector cylinder (not shown) and thus the ejection stroke 97 of the ejector plate 91 have reached their maximum values. The push element 53 and the ejector element 33 are operatively connected to each other by the drive element 62 of the connecting mechanism 6 and the stabilizing device 61 contained therein (see the indicated circle). The drive element 62 is partially received and guided within a recess 63 in the push element 53 and partially received and guided within a recess 64 in the ejector element 33, and is in the third position (demolding position), which corresponds to the final position at the end of the ejection process. The longitudinal axis of the push element 53 forms a guide angle α with respect to the longitudinal axis of the ejector element 33. The longitudinal axis of the drive member 62 forms a (negative) tilt angle β of less than 90° with respect to the longitudinal axis of the push element 53, and a tilt angle γ of less than 90° with respect to the longitudinal axis of the ejector element 33. A receiving portion 24 (not shown) is arranged on the portion of the guide element 22 facing the ejector head 43 (not shown) and is used to receive a fixing element 27, by which the guide element 23 can be detachably fastened to the core plate 92 (not shown).

[0041] Figure 5a , 5bExample 12 of the tilting ejector in the third position (demolding position) is shown, wherein a positive drive (acceleration) can be applied to the ejector element 32 from the push element 52 by the "positive" orientation of the drive member 62. The longitudinal axis of the push element 52 forms a guide angle α relative to the longitudinal axis of the ejector element 32. The longitudinal axis of the drive member 62 forms a tilt angle β relative to the longitudinal axis of the push element 52, and a tilt angle γ relative to the longitudinal axis of the ejector element 33. The push element 52 and the ejector element 32 are operatively connected to each other by the drive member 62 of the connecting mechanism 6 and the stabilizing device 61 contained therein (see the indicated circle). As described above, the "positive" position of the drive member 62 at a tilt angle β greater than 90° relative to the longitudinal axis of the push element 52, or at a tilt angle γ greater than 90° relative to the longitudinal axis of the ejector element 32, mechanically generates an acceleration drive due to the mechanical connection between the push element 52 and the ejector element 32, and the drive member 62 mechanically represents a cam. During the displacement of the push element 52 to the second position (demolding position), the speed-increasing drive produces an acceleration of the ejector element 32. Depending on the orientation of the drive member 62, the proportional relationship between the position of the drive member 62 at an angle β relative to the push element 52 and the position of the drive member 62 at an angle γ relative to the ejector element 32, and depending on the ejection stroke 97 of the ejector cylinder (not shown) and the ejector plate 91, as shown in Embodiment 12, a larger or smaller "positive" drive action can be produced, i.e., a larger or smaller speed-increasing drive, or a larger or smaller acceleration of the ejection process. In the third position (demolding position), the ejection stroke 97 can reach its maximum value. The drive member 62 is partially received and guided within the recess 63 in the push element 52, and partially received and guided within the recess 64 in the ejector element 32, and is in the third position (demolding position), which corresponds to the final position at the end of the ejection process. A receiving portion 24 is arranged on the portion of the guide element 22 facing the first end (not shown) and accommodates a fixing element 27, through which the guide element 22 can be detachably fastened to the core plate 92. A receiving portion 66 is used for a fastening device 65 (not shown) for the drive member 62 and is arranged in the recess 63 of the push element 52.

[0042] Figure 6a , Figure 6b , Figure 6cEmbodiment 13 of the tilting ejector in the third position (demolding position) is shown, wherein a "reverse" drive action (deceleration) can be applied from the push element 53 to the ejector element 33 via the "negative" orientation of the drive member 62. The longitudinal axis of the drive member 62 forms an angle of inclination β relative to the longitudinal axis of the push element 53 and an angle of inclination γ relative to the longitudinal axis of the ejector element 33. The push element 53 and the ejector element 33 are operatively connected via the drive member 62 of the connecting mechanism 6 and the stabilizing device 61 contained therein (see the indicated circle). As described above, the "negative" positions of the drive member 62 at an angle of inclination β less than 90° relative to the longitudinal axis of the push element 53, or at an angle of inclination γ less than 90° relative to the longitudinal axis of the ejector element 33, mechanically generate a deceleration drive due to the mechanical connection between the push element 53 and the ejector element 33; the drive member 62 mechanically represents a cam. During the displacement of the push element 53 to the third position (demolding position), this deceleration drive produces a deceleration of the ejector element 33. Based on the orientation of the drive member 62, the proportional relationship between the position of the drive member 62 at an angle β relative to the push element 53 and the position of the drive member 62 at an angle γ relative to the ejector element 33, and based on the ejection stroke 97 of the ejector plate 91, as shown in Embodiment 13, a larger or smaller reverse transmission effect, i.e., a larger or smaller deceleration transmission, or a larger or smaller deceleration of the ejection process, can be generated. The ejection stroke 97 has reached the maximum value that can be generated by the ejector device (i.e., the ejector cylinder (not shown), the ejector plate 91 (not shown), the push element extension 72 (not shown), and the push element 53). The drive member 62 is partially received and guided in the recess 63 in the push element 53, and partially received and guided in the recess 64 in the ejector element 33, and is in a third position (demolding position), which corresponds to the final position at the end of the ejection process. The longitudinal axis of the push element 53 forms a guide angle α relative to the longitudinal axis of the ejector element 33. The receiving portion 24 is arranged on the portion of the guide element 22 facing the first end and accommodates the fixing element 27 (not shown), through which the guide element 23 can be detachably fastened to the core plate 92. The receiving portion 66 is for the fastening device 65 (not shown) of the drive member 62 and is arranged in the recess 63 of the push element 53.

[0043] Figure 7a , Figure 7b , Figure 7cThe guide element 2 is illustrated by an embodiment: a rotationally symmetrical, cylindrical body in the form of a sleeve. The guide element 2 may preferably have a flat portion 261 extending longitudinally on its side surface 26. The guide element 2 may preferably be made of a metal alloy, particularly brass. Other conceivable materials for producing the guide element 2 may be ceramic or metal sintered materials or 3D laser-sintered powders. Channels 28, 29 are disposed within the guide element 2, which may preferably be formed by milling or electrical discharge machining. Channels 28, 29 are arranged spaced apart from each other at a guide angle α within the guide element 2 along their longitudinal direction. Channels 28, 29 are eccentrically located within the body of the guide element 2 and may form enlarged portions or flat portions of a circular cross-section, geometrically corresponding to the cross-section or outer contour of the pushing element 5 or the ejector element 3. Thus, the pushing element 5 (not shown) and the ejector element 3 (not shown) can be displaced within the guide element 2 in a mating manner by means of channels 28, 29, particularly in the absence of lubricant. The cross-sections of channels 28 and 29 partially overlap, and they are arranged relative to each other within the guide element 2, preferably in such a way that the pushing element 5 and the ejecting element 3 are guided in a manner that prevents them from contacting each other. This ensures, on the one hand, that no form-locking or frictional locking occurs between the pushing element 5 and the ejecting element 3 within the guide element 2, preventing friction and wear between them. Therefore, the guide element 2, channels 28 and 29, the pushing element 5, and the ejecting element 3 can be designed and operated as wear-free and, in particular, lubricant-free, contributing to the maintenance-free nature of the ejector device. A guide groove 25 is recessed into the guide element 2, extending from the longitudinal center of the body of the guide element 2 to the side surface 26 of the guide element 2, and can preferably be formed by milling or electrical discharge machining. The guide groove 25 is used to receive the drive member 62 of the connecting mechanism 6 (not shown), which can be moved frictionlessly within the guide groove 25 and therefore without wear, and the drive member 62 can be fully inserted into the body of the guide element 2. The guide groove 25 has a mechanical stop 251 in the portion of the guide element 2 facing the second end, which limits the displacement of the drive element 62. The guide groove 25 opens in the portion of the guide element 2 facing the ejector head 4 (not shown), allowing the drive element 62 to be displaced during operation of the tilting ejector, particularly in the direction of the end of the guide element 2 facing the ejector head 4 (not shown). This allows the corresponding embodiments 11, 12, and 13 of the tilting ejector to achieve maximum stroke between a first position (forming position), a second position (at the end of the forming process), and a third position (demolding position). Therefore, the first position (forming position) of the drive element 62 and the first position (forming position) of the connecting mechanism 61 are not necessarily limited to the space above the guide element 2.At the end of the guide element 2 facing the ejector head 4 (not shown), a receiving portion 24 for accommodating a fixing element 27 (not shown) is recessed, through which the guide element 2 can be detachably fastened to the core plate 92 (not shown). Each guide element 2 can be accommodated in a groove (not shown) in the core plate 92 (not shown), making it easy to replace the corresponding guide element 2. This allows the ejector device to have a high state of operational readiness.

[0044] Figure 8a , 8bFigure 8c shows a preferred embodiment of the ejector element 3. The ejector element 3 has the shape of a cylindrical rod and may have a flat portion 34 on one side. Through the flat portion 34, the ejector element 3 can be rotatably fixed within the channel 29 (not shown) of the guide element 2 (not shown), which, as described above, has a cross-section complementary to that of the ejector element 3. The recess 64 facing the ejector head 4 (not shown) and the recess 64 facing away from the ejector head 4 (not shown) are arranged parallel to each other on one hand and at an angle γ relative to the longitudinal axis of the ejector element 3 on the other hand. The recess 64 arranged in the ejector element 3 can accommodate a drive member 62 (not shown). The recess 64 facing the ejector head 4 (not shown) and the recess 64 facing away from the ejector head 4 (not shown) constitute the first component of the stabilizing device 61, and in the first embodiment of the ejector element 3, it may be specifically designed, for example, in the form of a wedge-shaped buckle 631. A wedge-shaped buckle 631 present in the recess 64 is used to receive a second component of the stabilizing device 61, which may be specifically designed as a wedge-shaped guide bar 621 (not shown) of the drive member 62 (not shown). In another embodiment of the ejector element 3, the end of the recess 64 facing the ejector head 4 (not shown) and the end of the recess 64 away from the ejector head 4 (not shown) may be designed as a rectangular buckle 632 (not shown). The rectangular buckle 632 (not shown) of the recess 64 is used to receive the rectangular guide bar 622 (not shown) of the drive member 62 (not shown). Through the first embodiment of the first and second components of the stabilizing device 61, i.e., through the wedge-shaped buckle 631 of the recess 64 and the wedge-shaped guide bar 621 (not shown) of the drive member 62, which is complementary to it, the offset of the ejector element 3 in the second direction (different first direction transverse to the translational movement of the ejector element 3) can be reduced, until and including preventing such offset. Thus, the stabilization of the tilting ejector can be achieved by means of a stabilizing device 61 designed in this way during the ejection process, which contributes to the fatigue durability of the ejector device. In another embodiment of the stabilizing device 61, represented by a rectangular form of an undercut 632 (not shown) within the recess 64 facing the ejector head 4 (not shown) and the recess 64 away from the ejector head 4 (not shown), and a rectangular form of a guide bar 622 of the drive member 62 (not shown) designed complementary to it, the stabilization of the tilting ejector can be generated by the stabilizing device 61 designed in this way during the ejection process.

[0045] Figure 9a , Figure 9b , Figure 9cA preferred embodiment of the actuating element 5 is shown. The actuating element 5 has the shape of a round bar with flat portions 54 on both sides. The flat portions 54 allow the actuating element 5 to be rotatably fixed within a channel 28 (not shown) of a guide element 3 (not shown), the channel 28 having a cross-section complementary to the guide element 3. A recess 63 is arranged on the portion of the actuating element 3 facing the ejector head 4 (not shown) and can accommodate a drive member 62 (not shown). The end of the recess 63 facing the ejector head 4 (not shown) or the end of the recess 63 facing away from the ejector head 4 (not shown) constitutes another component of the aforementioned stabilizing device 61, and in the first embodiment, it can be designed with a wedge-shaped undercut 631. In another embodiment of the stabilizing device 61, the end of the recess 63 facing the ejector head 4 (not shown) or the end of the recess 63 facing away from the ejector head 4 (not shown) can be designed to be perpendicular to the flat portion 54 and without the aforementioned wedge-shaped undercut. Through two embodiments of the stabilizing device 61, the offset of the pushing element 5 in the second direction (transverse to the first direction of the translational movement of the pushing element 5) can be reduced until and prevented, thereby generating stability of the tilting ejector during the ejection process, which contributes to the fatigue durability of the ejector device. The end of the recess 63 facing the ejector head 4 (not shown) and the end of the recess 63 facing away from the ejector head 4 (not shown) are arranged parallel to each other on one hand, and on the other hand, at an angle β relative to the longitudinal axis of the pushing element 5. The driving member 62 can be arranged in the recess 63 such that its orientation or its longitudinal axis presents an angle β less than 90° or greater than 90° relative to the longitudinal axis of the pushing element 5. Therefore, depending on the orientation of the connecting mechanism 6, the same pushing element 5 and the same driving member 62 can generate either the aforementioned speed-up transmission (acceleration) or the aforementioned speed-down transmission (deceleration) on the ejector element 3 (with the complementary design and orientation of the recess 64), which contributes to the modular variability of the tilting ejector scheme. The push element 5 has a receiving portion 66 in the region of the recess 63 for a fastening device 65 (not shown), by which the drive member 62 can be detachably fastened to the push element 5. The fastening device 65 can be designed as a screw or pin, and for this purpose, the receiving portion 66 can be designed as a threaded hole or bore. The push element 5 has an insertion end 55 or thread 55 at its end opposite to the ejector head 4 for receiving the fastening device (not shown), by which the push element extension 7 (not shown) can be placed on or screwed onto the push element 5.

[0046] Figure 10a , Figure 10b , Figure 10c , Figure 10d , Figure 10e Different embodiments of the drive element 62 are shown. In a preferred embodiment, according to Figure 10a , 10bThe drive element 62 can be used within the connecting mechanism 6 (not shown) of the tilting ejector according to the invention. The aforementioned stabilizing device 61 (not shown) is an integral part of the connecting mechanism 6 (not shown), which includes, on one hand, the drive element 62, the first or second end of which can be designed as a wedge-shaped guide strip 621, and on the other hand, a wedge-shaped buckle 631 (not shown), which is designed within a recess 63 or 64 (not shown) to complement the wedge-shaped guide strip 621, for accommodating the drive element 62 within the ejector element 3 or the pushing element 5 (not shown). In another embodiment, according to... Figure 10c , 10d An embodiment of the drive member 62 can be designed within the stabilizing device 61 of the tilting ejector according to the invention. In another embodiment, the stabilizing device 61 may include, on the one hand, the drive member 62, the first or second end of which may be designed as a rectangular guide bar 622, and on the other hand, it may include a rectangular buckle 632, which is designed to complement the rectangular guide bar 622 within a recess 63 or recess 64 of the ejector element 3 or the pusher element 5 (not shown). In another embodiment, according to Figure 10e An embodiment of the drive element 62 can be used within the connecting mechanism 6 of the tilting ejector according to the invention, wherein the connecting mechanism 6 in this embodiment of the tilting ejector can be designed without a stabilizing device 61. This other embodiment can be particularly used for tilting ejectors, which are ejector devices within small equipment used in casting or injection molding processes, wherein a small lateral force or no lateral force is generated between the ejector element 3 and the push element 5 during the ejection process. Such an ejector device does not require a stabilizing device 61 within the connecting mechanism 6. The first or second end of the drive element 62 designed in this way can be designed without a guide bar and received within a recess 63 or recess 64 in the ejector element 3 or the push element 5. The receiving portion 67 for receiving a fastening element 65 (not shown) can be designed as a cylindrical bore for fastening the drive element 62 to the push element 5 (not shown), wherein the cylindrical bore can have a channel 671 for receiving the aforementioned fastening device 65 and a support surface 672.

[0047] Figure 11a , 11b Figure 11c shows another embodiment 13 of the tilting ejector. The pushing element 5 and the ejecting element 3 are each guided to the guiding element 2 via channels 28 and 29, and are operatively connected to each other via the connecting mechanism 6 and the drive member 62 as described above. As described above, the drive member 62 is received in a recess 63 within the pushing element 5 and a recess 64 within the ejecting element 3. In one aspect, the illustrated embodiment has a drive member 62 that, according to… Figure 10c , 10dThe first end of the recess 64 is designed without a guide bar, and its second end is designed with a rectangular guide bar 622, as well as a rectangular buckle 632 at the second end of the recess 64 for accommodating the drive member 62. The first and second ends of the recess 64 can be parallel to each other on the one hand, and on the other hand, arranged at an angle γ relative to the longitudinal axis of the ejector element 3. The drive member 62 can be accommodated in the recess 64 of the ejector element 3 and the recess 63 of the push element 5 such that its orientation and longitudinal axis form an angle γ of less than 90° or greater than 90° relative to the longitudinal axis of the ejector element 3. This allows either the aforementioned acceleration effect (speeding up) or the aforementioned deceleration effect (speeding down) to be generated between the push element 5 and the ejector element 3 through different orientations of the same drive member 62, which contributes to the modular variability of the tilt ejector scheme.

[0048] Reference List 1 Inclined ejector Embodiments of tilting ejector 1 (11, 12, 13) 14 Casting Components 141, 142, 143 Demolding areas of cast component 14 1411, 1421, and 1431 are undercuts within the demolding areas 141, 142, and 143 of the cast part 14. 2 guiding elements Embodiments of guide element 2 (21, 22, 23) 24. Receiving portion on guide element 2 for fixing element 27 25 is a guide groove for accommodating the drive element 62 in the guide element 2. 251 is the stop at the second end of the guide groove 25 26 outer surface of guide element 2 261 The flat portion of the outer surface 26 of the guide element 2 27. Fixing element for securing guide element 2 to cavity plate 92 28 is used to accommodate the pushing element 5 within the guiding element 2. 29 is used to accommodate the ejector element 3 within the guide element 2. 3 ejector components Embodiments of ejector element 3 (31, 32, 33) 34 Flat portion of ejector element 3 4. Top of head Examples of 41, 42, and 43 with protruding head 4 431 protrudes from the notch of head 43 5. Driving components Embodiments of driving element 5 (51, 52, 53) 54 Flat part of the pushing element 5 55 Insertion end / thread of the fastening device for fastening the extension of the push element 7 6 connecting mechanisms 61 Stabilizer 62. Drive element (cam) 621 wedge-shaped guide strip, as an embodiment of the portion of drive member 62 facing the first end or the second end. 622 rectangular guide strip, as an embodiment of the portion of drive member 62 facing the first end or the second end. 631 is a snap fastener for accommodating the drive member 62 with a wedge-shaped guide bar (wedge shape). 632 is a snap fastener for accommodating the drive element 62 with a rectangular guide bar (rectangular shape). 63 is used to push the recess of the drive member 62 in the element 5. 64 is the recess for the drive member 62 in the ejector element 3. 65 is a fastening element for securing the drive element 62 to the push elements 51, 52, and 53. 66 The receiving portion for fastening device 65 within the pushing elements 51, 52, and 53 67 is a receiving portion for fastening the drive member 62 to the fastening element 65 of the push element 5. 671 The passage within the accommodating section 67 672 Support surface within the receiving part 67 7. Push element extension section Embodiments of the pushing element extension 7 (71, 72) 8. Fastening device for fixing the push element extension 7 to the ejector plate 91 9. Molds used in casting or injection molding processes 91 Top Out Plate Type 92 core board (movable mold board) 921, 922, and 923 are used to accommodate the ejector heads 41, 42, and 43 in the demolding area of ​​the core plate 92. Type 93 cavity plate (fixed mold plate, injection molded plate or die-cast plate) 95, 96 mold plates (base plates or sealing plates) The ejection stroke of ejector plate 97 and ejector plate 91 (corresponding to the stroke of ejector cylinder). 98 Free space between cavity plate 93 and core plate 92 α is the guide angle between the longitudinal axis of the pushing element 5 and the longitudinal axis of the ejecting element 3. β is the tilt angle between the longitudinal axis of the pushing element 5 and the longitudinal axis of the driving element 62. γ is the tilt angle between the longitudinal axis of the ejector element 3 and the longitudinal axis of the drive element 62.

Claims

1. Equipment, particularly a tilting ejector (1), for demolding a cast part (14) having undercuts (141) from a cavity plate (93) for a casting process or an injection molding process (9), comprising: -Guiding element (2); - Ejection element (3), which is guided in the guide element (2) in a first direction in a translational sliding manner and has a first end that can be connected to the ejection head (4); - A pushing element (5) is guided in the guiding element (2) in a translational sliding manner along a second direction, wherein the first direction and the second direction form a guiding angle not equal to 0°; - Connecting mechanism (6), the connecting mechanism (6) is designed to mechanically connect the ejector element (3) and the pusher element (5) for translational movement along their first and second directions, respectively; - Stabilizing device (61), which is arranged between the first end of the ejector element (3) and the guide element (2) to reduce the offset of the ejector element (3) in a first direction of translational movement of the ejector element (3) or in a second direction of translational movement of the push element (5).

2. The device according to claim 1, wherein, The stabilizing device (61) and the connecting mechanism (6) are formed together.

3. The device according to claim 1 or 2, wherein, The stabilizing device (61) has an elongated drive member (62) fixedly arranged on the pushing element (5) as part of the connecting mechanism (6). The drive member (62) protrudes laterally from the pushing element (5) along a first or second extension direction relative to its longitudinal extension direction. The ejector element (3) is provided with a recess (64) so ​​that when the pushing element (5) moves translationally, the drive member (62) is guided on the ejector element (3) along the longitudinal extension of the drive member (62), thereby causing the ejector element (3) to move along the first direction.

4. The device according to claim 1 or 2, wherein, The stabilizing device (61) has a drive member (62) fixedly arranged on the ejector element (3) as part of the connecting mechanism (6). The drive member (62) extends laterally from the ejector element (3) along a first or second extension direction relative to its longitudinal extension. The pushing element (5) is provided with a recess (63) so that when the pushing element (5) is translated, the drive member (62) is guided on the pushing element (5) along the longitudinal extension of the drive member (62), thereby causing the ejector element (3) to move along the first direction.

5. The device according to claim 3 or 4, wherein, The mechanical connection of the connecting mechanism (6) is achieved in such a way that during the translational movement of the pushing element (5), the driving element (62) drives the ejecting element (3) along the first direction.

6. The device according to any one of claims 3 to 5, wherein, The longitudinal extension of the drive member (62) has an angle of inclination relative to the first direction of the ejector element (3) or the second direction of the push element (5), which is less than 90° or greater than 90° relative to the first or second direction of the ejector element (3) and / or the push element (5), so as to realize deceleration transmission or speed-up transmission between the push element (5) and the ejector element (3).

7. The device according to any one of claims 3 to 6, wherein, The guide element (2) has a guide groove (25) arranged to accommodate the drive element (62) according to the translational position of the push element (5) within the guide element (2).

8. An inclined ejector (1), having the device according to any one of claims 1 to 7, wherein, The guide element (2) is arranged on the core plate (92).

9. An inclined ejector (1), having the device according to any one of claims 1 to 8, wherein, It is equipped with a particularly hydraulically driven ejector cylinder, which is designed to move the push element (5) in the second direction.

Images