Tool for molding a molded element and associated production method

Abstract

Molding tool for a molded element and associated production method The invention relates to a molding tool (10) comprising: a mold (14), a slide (16) movable in translation relative to a first part of the mold between a molding position when the mold is in a closed position, a demolding position when the mold is in an open position and an intermediate disengagement position.The molding tool comprises a device (18) for moving the slide, comprising: a guide arm (41) projecting from a useful face of the slide and having a first stop surface (S1), an actuating member (44) on a second part of the mold having a second stop surface (S2), the stop surfaces cooperating together between the closed and open positions to cause the translation of the slide only between the molding and intermediate disengagement positions, a jack (46) translating the slide only between the intermediate disengagement and demolding positions. Figure for the abstract: 1.

Description

Title of the invention: Tool for molding a molded element and associated production method

[0001] The present invention relates to a molding tool for producing a molded element of the type comprising:

[0002] - a mold comprising a first mold part delimiting a first surface molding and a second mold part delimiting a second molding surface, the mold being movable in an actuation direction between a closed position in which the first and second molding surfaces delimit between them at least part of a molding cavity and an open position in which the first and second mold parts are spaced apart from each other,

[0003] - a slide connected to the first mold part, the slide comprising a face molding delimiting a third molding surface and a useful face, the slide being movable in translation relative to the first mold part in a translation direction distinct from the actuation direction between a molding position in which the mold is in the closed position and in which the third molding surface delimits with the first and second molding surfaces said part of the molding cavity and a demolding position in which the mold is in the open position.

[0004] The present invention also relates to a method of producing a molded element.

[0005] In a known molding tool, the device for moving the slide comprises at least one demolding finger connected to the second mold part, inclined relative to the direction of actuation of the mold, and a cavity for receiving the demolding finger connected to the slide, inclined relative to the direction of actuation. When the mold moves between the closed and open positions, the demolding finger slides in the receiving cavity. During this movement, the inclined walls of the demolding finger and the receiving cavity cooperate with each other, which causes the translation of the slide from the molding position into the demolding position and vice versa. In this type of known molding tool, the stroke of the slide depends in particular on the length of the slide and the inclination of the slide.To obtain a sufficient stroke of the slide between the molding position and the demolding position, the length of the demolding finger and its inclination are relatively large so that the device for moving the slide between the molding and demolding positions is particularly bulky depending on the direction of actuation and the direction of . translation. Furthermore, in this type of known molding tool, the face of the slide facing the demolding fingers has the same inclination as that of the slide, which implies that the slide also has a significant bulk.

[0006] One of the aims of the present invention is to overcome the aforementioned drawbacks by proposing a more compact molding tool.

[0007] To this end, the invention relates to a molding tool in which the slide is, in addition, movable in translation relative to the first mold part in an intermediate disengagement position, the intermediate disengagement position being located between the molding position and the demolding position, and in which the molding tool comprises a device for moving the slide between the molding, intermediate disengagement and demolding positions, the moving device comprising:

[0008] - at least one translational slide guide arm projecting from the face useful of the slide according to the direction of translation, the arm having a first stop surface,

[0009] - an actuating member provided on the second mold part having a second stop surface, the first and second stop surfaces cooperating together during passage of the mold between the closed and open positions of the mold to cause the translation of the slide only between the molding and intermediate disengagement positions,

[0010] - a cylinder, the cylinder being configured to translate the slide only between the intermediate disengagement position and the demolding position.

[0011] Thus, thanks to these characteristics, two distinct parts of the displacement device ensure the displacement of the slide between the molding, intermediate disengagement and demolding positions, namely on the one hand the guide arm and the actuating member and on the other hand the jack.

[0012] In particular, thanks to the invention, it is possible to reduce the size of the actuating member and of the slide both in the translation direction and in the actuation direction compared to the size of the molding tool of the state of the art in the translation and actuation direction.

[0013] Furthermore, due to the fact that the cylinder only moves the slide between the intermediate disengagement position and the demolding position, the cylinder requires a limited force. The limited force is due to the fact that the slide is “unlocked” from the molding position by the first movement induced by the cooperation of the first and second stop surfaces. Indeed, the slide is constrained in its molding position and requires a significant force to unlock it. Thus, thanks to the invention, a low-power cylinder can be chosen to move the slide only and not for unjamming it from the molding position into the intermediate disengagement position. In other words, a cylinder only suitable for moving the weight of the slide is suitable for the present invention.

[0014] Such a low-power cylinder is a space-saving cylinder.

[0015] In addition, the guide device allows optimal guidance of the slide in translation thanks to the guide arms.

[0016] Furthermore, the guide arms ensure both the actuation of the slide by cooperating with the actuating member and the guidance of the slide, which also makes it possible to obtain a particularly compact displacement device.

[0017] According to other optional characteristics of the molding tool, taken in isolation or in any technically conceivable combination:

[0018] - the first and second abutment surfaces cooperate together during the passage of the mold from the closed mold position to the open mold position to drive the slider to translate from the molding position to the intermediate disengagement position only.

[0019] - the first abutment surface is a flat surface inclined relative to the direction actuation and the second abutment surface is a planar surface inclined relative to the actuation direction, the second abutment surface applying a force substantially parallel to the actuation direction directed on the first abutment surface during the cooperation of the first and second abutment surfaces with each other to cause the translation of the slide between the molding and intermediate disengagement positions, the first abutment surface and the second abutment surface being advantageously such that a stroke of the slide between the molding position and the intermediate disengagement position is less than or equal to 10% of the stroke of the slide between the molding position and the demolding position.

[0020] - the arm comprises a guide member intended to cooperate with an element of additional guidance of the molding tool so as to guide the translation of the slide between the molding positions, intermediate disengagement and demolding.

[0021] - the arm comprises a body having internally at least one cooling channel arrangement in which a cooling fluid is capable of circulating so as to cool at least the third molding surface.

[0022] - the displacement device comprises a first guide arm of the slide projecting from the useful face of the slide in the translation direction and a second guide arm of the slide projecting from the useful face of the slide in the translation direction, the first arm having the first stop surface, the second arm having a third stop surface, the member actuating means having a fourth stop surface, the third and fourth stop surfaces cooperating together during passage of the mold between the closed and open positions to cause translation of the slide between the molding and intermediate disengagement positions.

[0023] - the third and fourth stop surfaces cooperate together during the passage of the mold from the closed mold position to the open mold position to drive the slider to translate from the molding position to the intermediate disengagement position only.

[0024] - the first arm and the second arm are spaced from each other in a direction substantially perpendicular to the translation and actuation directions, the first arm and the second arm delimiting between them a zone for receiving the actuation member when the mold is in the closed position.

[0025] - the first arm and the second arm respectively comprise a body having an internal face and an external face opposite the internal face, the internal faces of the first arm and the second arm at least partially delimiting the receiving zone, at least part of the internal face of the first arm having the first stop surface and at least part of the internal face of the second arm having the third stop surface.

[0026] - the first arm delimits with a first corresponding part of the useful face of the slide a first housing receiving a first corresponding part of the actuating member in the closed position of the mold and the second arm delimits with a second corresponding part of the useful face of the slide a second housing receiving a second corresponding part of the actuating member in the closed position of the mold, the first housing and the second housing having a concave shape in at least one plane substantially perpendicular to the direction of actuation and making it possible to guide the actuating member between the open and closed positions of the mold.

[0027] - the cylinder is configured to be actuated according to a predefined control law, the predefined control law depending on the position of the slide, the cylinder advantageously comprising a movable rod, one of the ends of the cylinder rod being connected to a part of the useful face of the slide.

[0028] - the molding tool further comprises an elastic return element of the slide in the intermediate disengagement position, the elastic return element preferably extending between a wall integral in movement with the slide and a support zone of the molding tool, the support zone preferably being a portion of the first mold part or an end of a rod of the jack.

[0029] The invention also relates to a method of producing a molded element using a molding tool as described above, the method of producing including the following steps:

[0030] - placing the mold in the closed position, the slide being in the position of molding,

[0031] - production of the molded element in the molding cavity,

[0032] - placing the mold in the open position by moving the first part of mold and the second mold part from each other in the actuation direction, the slide passing from the molding position into the intermediate disengagement position by the cooperation of the first stop surface and the second stop surface with each other when passing the mold from the closed position into the open position,

[0033] - once the slide is in the intermediate disengagement position and the mold in the open position, actuation of the cylinder, the cylinder translating the slide from the intermediate disengagement position into the demolding position, and

[0034] - removal of the molded element from the molding tool.

[0035] The invention will be better understood on reading the following description, given by way of example only, and with reference to the appended drawings, in which:

[0036] - [Fig.l], [Fig.l] is a schematic representation in longitudinal section of a molding tool according to the invention in which a mold of the molding tool is in the closed position and in which a slide of the molding tool is in the molding position,

[0037] - [Fig.2], [Fig.2] is a schematic perspective representation of the slide of the molding tool of [Fig.l],

[0038] - [Fig.3], [Fig.3] is a schematic cross-sectional representation of the molding tool of [Fig.l],

[0039] - [Fig.4], [Fig.4] is a schematic representation of the molding tool of the [Fig.l] in which the slider in an intermediate disengagement position, and

[0040] - [Fig.5], [Fig.5] is a schematic representation of the molding tool of the [Fig.l] in which the mold is in the open position and the slide in a demolding position.

[0041] In the remainder of the description, a longitudinal direction X is defined, identified by an oriented X axis, a transverse direction Y, identified by an oriented Y axis perpendicular to the longitudinal direction X, and an elevation direction Z, identified by an oriented Z elevation axis perpendicular to the longitudinal direction X and to the transverse direction Y.

[0042] Furthermore, in the remainder of this description, the dimension of an element measured along the longitudinal direction X is called “length”, the dimension of an element measured along the transverse direction Y is called “width” and the dimension of an element measured along the elevation direction Z is called "height".

[0043] A molding tool 10 for producing a molded element 12 from a molding material is described with reference to [Fig.l].

[0044] Such a molding tool 10 is, for example, an injection mold for producing the molded element 12 by injection of the molding material.

[0045] The molded element 12, visible in Figures 1, 3, 4 and 5 is, for example, a motor vehicle part.

[0046] Such a molded element 12 has, for example, at least one part having undercuts.

[0047] The molding tool 10 comprises a mold 14, a slide 16 and a device 18 for moving the slide 16. For example, as visible in [Fig. 3], the molding tool 10 further comprises at least one guide element 20 for the slide 16, for example two guide elements 20 for the slide 16, such as guides.

[0048] As seen in Figures 1, 3, 4 and 5, the mold 14 comprises a first mold part 14A and a second mold part 14B.

[0049] The first mold portion 14A defines a first molding surface 22.

[0050] The first molding surface 22 has a shape complementary to at least a portion of the element 12 to be produced.

[0051] The first mold part 14A has a guide groove (not visible in the figures) for the slide 16.

[0052] The second mold part 14B delimits a second molding surface 26.

[0053] The second molding surface 26 has a shape complementary to at least a portion of the molded element 12 to be produced.

[0054] The mold 14 is movable between a closed position ([Fig.l]) in which the first and second molding surfaces 22, 26 delimit between them at least a part of a molding cavity 28 and an open position ([Fig.5]) in which the first and second mold parts 14A, 14B are spaced apart from each other.

[0055] The molding cavity 28 has the shape of the molded element 12.

[0056] The first mold part 14A and the second mold part 14B are movable relative to each other between the closed and open positions according to an actuation direction D. In the present exemplary embodiment, the actuation direction D is substantially parallel to the elevation direction Z.

[0057] In the particular example described here, the first mold part 14A is fixed and the second mold part 14B is movable relative to the first mold part 14A. Thus, the first mold part 14A is movable along the actuation direction D in an opening direction O, oriented along the orientation of the Z axis, and along the actuation direction D in a closing direction F, oriented in the opposite direction to the orientation of the Z axis, relative to the first mold part 14A for open, respectively close the mold 14.

[0058] The slide 16 comprises a molding face 16A delimiting a third molding surface 32 and a useful face 16B distinct from the molding face 16A and therefore from the molding surface 32.

[0059] The third molding surface 32 has a shape complementary to at least a portion of the element 12 to be molded.

[0060] The useful face 16B of the slide 16 is for example the face opposite the molding face 16A in the longitudinal direction X.

[0061] The useful face 16B is inclined for example relative to the actuation direction D by a first angle Al greater than or equal to 5 degrees and less than or equal to 15 degrees.

[0062] The slider 16 is connected to the first mold part 14A.

[0063] For example, the slider 16 is engaged in the guide groove of the first mold part 14A.

[0064] The slide 16 is movable in translation relative to the first mold part 14A in a translation direction T distinct from the actuation direction D between a molding position ([Fig.l]) when the mold 14 is in the closed position, a demolding position ([Fig.5]) distinct from the molding position when the mold 14 is in the open position and an intermediate disengagement position ([Fig.4]) located between the molding position and the demolding position, the intermediate disengagement position being distinct from the molding position and the demolding position.

[0065] Thus, the slide 16 is movable in translation from the molding position into the demolding position via the intermediate disengagement position and the slide 16 is movable in translation from the demolding position into the molding position via the intermediate disengagement position.

[0066] In the present exemplary embodiment, the translation direction T is substantially parallel to the longitudinal direction X. Thus, the translation direction T is substantially perpendicular to the actuation direction D.

[0067] As visible in [Fig.l], in the molding position, the third molding surface 32 delimits with the first and second molding surfaces 22, 26 said part of the molding cavity 28.

[0068] As seen in [Fig. 5], in the demolding position, the third molding surface 32 is spaced from the first molding surface 22 and the second molding surface 26 so as to allow the molded element 12 to be demolded.

[0069] In particular, in the demolding position, the third molding surface 32 is sufficiently spaced from the molded element 12 so as to allow demolding of the molded element 12, i.e. allowing extraction of the molded element 12 from the molding tool 10.

[0070] As visible in [Fig.5], the movement of the slide 16 between the molding position and the demolding position is called “total stroke CT of the slide 16”.

[0071] The intermediate disengagement position is an intermediate position of the slide 16 located between the molding position and the intermediate disengagement position.

[0072] The slider 16 is in the intermediate disengagement position when the mold 14 is in the open position.

[0073] In the present embodiment, it will be noted that in [Fig. 4] the slide 16 is in the intermediate disengagement position and the mold 14 is in an intermediate position between the open and closed position. The passage of the mold 14 between this intermediate position shown in [Fig. 4] and the open position does not change the position of the slide 16 which remains in the intermediate disengagement position. In other words, the slide 16 is in the intermediate disengagement position in the intermediate position of the mold 14 shown in [Fig. 4].

[0074] As seen in [Fig. 4], in the intermediate disengagement position, the third molding surface 32 is spaced from the first molding surface 22 and the second molding surface 26 and does not delimit the molding cavity 28.

[0075] In particular, in the intermediate disengagement position, the third molding surface 32 is spaced from the molded element 12 in the translation direction T.

[0076] As can be seen in [Fig. 4], in the intermediate disengagement position, the molded element 12 cannot be demolded, i.e. extracted from the molding tool 10 because the molded element 12 remains blocked by at least part of the slide 16.

[0077] The movement of the slide 16 between the molding position and the intermediate disengagement position is called “disengagement stroke CD of the slide 16”.

[0078] For example, the disengagement stroke CD of the slider 16 between the molding position and the intermediate disengagement position is less than or equal to 10% of the total stroke CT of the slider 16 between the molding position and the demolding position.

[0079] The moving device 18 of the slider 16 is configured to move the slider 16 between the molding, intermediate disengagement and demolding positions.

[0080] The displacement device 18 comprises at least a first arm 41 for guiding the slide 16 in translation having at least a first stop surface SI, optionally a second arm 42 for guiding the slide 16 in translation having a third stop surface S3, at least one actuating member 44 provided on the second mold part 14B having a second stop surface S2 and, optionally, a fourth stop surface S4, a cylinder 46 and a connecting part 48 of the useful face 16B of the slide 16 to the cylinder 46.

[0081] As visible in Figures 2 and 3, the first guide arm 41, called “first arm 41” hereinafter, and the second guide arm 42, called “second arm 42” hereinafter, project from the useful face 16B of the slide 16 in the translation direction T.

[0082] The first arm 41 and the second arm 42 are spaced from each other in a direction substantially perpendicular to the translation directions T and actuation directions D. In other words, the first and second arms 41, 42 are not in contact with each other.

[0083] In particular, the first arm 41 is for example arranged at one of the ends of the slide 16 and the second arm 42 is for example arranged at the other end of the slide 16, said ends of the slide 16 being separated from each other along a direction perpendicular to the actuation direction D and to the translation direction T, that is to say the transverse direction Y in this case.

[0084] The first arm 41 and the second arm 42 are fixed relative to the slide 16, that is to say they are not movable relative to the slide 16.

[0085] For example, the first arm 41 and the second arm 42 are integral with the slider 16.

[0086] Each arm among the first arm 41 and the second arm 42 has an elongated shape extending in a direction of extension of this arm 41, 42. The direction of extension of the first arm 41 and of the second arm 42 is substantially parallel to the direction of translation T.

[0087] For example, as seen in [Fig. 3], the first arm 41 and the second arm 42 each have an “L” shape in a transverse section plane substantially perpendicular to the actuation direction D.

[0088] The width of each of the arms 41, 42 among the first arm 41 and the second arm 42 is less than the width of the useful face 16B of the slide 16.

[0089] The height of each of the arms 41, 42 among the first arm 41 and the second arm 42 is less than the height of the useful face 16B of the slide 16.

[0090] The first arm 41 and the second arm 42 each comprise a body 51, 52 having an internal face 51A, 52A and an external face 51B, 52B opposite the internal face 51A, 52A in the transverse direction Y.

[0091] For example, the body 51 of the first arm 41 and the body 52 of the second arm 42 respectively have internally at least one cooling channel 64.

[0092] For example, the first arm 41 and the second arm 42 further comprise, respectively, a guide member 66 intended to cooperate with said guide element 20 of the molding tool 10 so as to guide the translation of the slide 16. between the molding positions, intermediate disengagement and demolding.

[0093] In other words, the first arm 41 and the second arm 42 make it possible to guide the translation of the slide 16 from the molding position into the demolding position via the intermediate disengagement position and vice versa.

[0094] The internal faces 51A, 52A of the first arm 41 and of the second arm 42 are turned towards each other.

[0095] For example, the internal faces 51A, 52A of the first arm 41 and of the second arm 42 each form a step.

[0096] A part of the internal face 5 IA of the body 51 of the first arm 41, called “stop wall 61 of the first arm 41” has the first stop surface SI.

[0097] Said stop wall 61 of the first arm 41 is arranged opposite the useful face 16B of the slider 16 in the translation direction T.

[0098] The first stop surface SI provided on the first arm 41 is a flat surface inclined relative to the actuation direction D. The first stop surface SI is visible in Figures 1, 4 and 5.

[0099] The first stop surface SI forms a bevel of said stop wall 61 of the first arm 4L

[0100] The first stop surface SI is inclined relative to the actuation direction D by a second non-zero angle A2.

[0101] For example, angles A1 and A2 are equal.

[0102] The first stop surface SI is inclined relative to the actuation direction D in the direction of the useful face 16B of the slide 16.

[0103] The first abutment surface SI has a dimension, called the first dimension, defined in a longitudinal section plane.

[0104] A part of the internal face 52A of the body 52 of the second arm 42, called “stop wall 62 of the second arm 42” has the third stop surface S3 (visible in [Fig.3]).

[0105] Said stop wall 62 of the second arm 42 is arranged opposite the useful face 16B of the slider 16 in the translation direction T.

[0106] The third stop surface S3 provided on the second arm 42 is a flat surface inclined relative to the actuation direction D.

[0107] The third stop surface S3 is inclined relative to the actuation direction D by a non-zero angle, said angle being equal to the angle A2.

[0108] The third stop surface S3 is inclined relative to the actuation direction D towards the useful face 16B of the slide 16.

[0109] The third abutment surface S3 has a dimension, called the “third dimension”, defined in a longitudinal section plane.

[0110] The third abutment surface S3 forms a bevel (not visible in the figures) of said stop wall 62 of the second arm 42.

[0111] As visible in [Fig.3], the first arm 41 and the second arm 42 delimit between them a receiving zone ZR of the actuating member 44 when the mold 14 is in the closed position and the slide 16 in the molding position.

[0112] In particular, the internal faces 51A, 52A of the first arm 41 and of the second arm 42 delimit between them the reception zone ZR of the actuating member 44.

[0113] More precisely, the reception zone ZR is delimited at least in part by the stop wall 61 of the first arm 41 comprising the first stop surface S1 and the stop wall 62 of the second arm 42 comprising the second stop surface S2.

[0114] Furthermore, as visible in [Fig. 3], the first arm 41 delimits with a first corresponding part of the useful face 16B of the slide 16 a first housing 54 intended to receive a first corresponding part 44i of the actuating member 44 in the closed position of the mold 14 and the second arm 42 delimits with a second corresponding part of the useful face 16B of the slide 16 a second housing 56 receiving a second corresponding part 442 of the actuating member 44 in the closed position of the mold 14.

[0115] The first housing 54 and the second housing 56 each have a concave shape in at least one plane substantially perpendicular to the actuation direction D.

[0116] The shape of the first housing 54 is at least partly conferred by the shape of the internal face 51A of the first arm 4L. The shape of the second housing 56 is at least partly conferred by the shape of the internal face 52A of the second arm 42.

[0117] More precisely, the first housing 54 is delimited by the internal face 51A of the first arm 41 and said corresponding first part of the useful face 16B of the slide 16.

[0118] In particular, the first housing 54 is delimited by at least the part of the internal face 51A of the first arm 41 comprising the first stop surface SI, that is to say in the present exemplary embodiment the stop wall 61 of the first arm 41, and said corresponding first part of the useful face 16B of the slide 16.

[0119] The first housing 54 is intended to house the first corresponding part 44i of the actuating member 44 in the closed position of the mold 14 and therefore in the molding position of the slide 16.

[0120] Furthermore, said first corresponding part 44i of the actuating member 44 is configured to slide in the first housing 54 between the open position and the closed position of the mold 14, that is to say from the open position to the closed position and vice versa.

[0121] The second housing 56 is delimited by the internal face 52A of the second arm 42 and said corresponding second part of the useful face 16B of the slide 16.

[0122] In particular, the second housing 56 is delimited by at least the part of the internal face 52A of the second arm 42 comprising the third stop surface S3, that is to say in the present exemplary embodiment the stop wall 62 of the second arm 42, and said corresponding second part of the useful face 16B of the slide 16.

[0123] The second housing 56 is intended to house a second corresponding part 442 of the actuating member 44 in the closed position of the mold 14 and therefore in the molding position of the slide 16.

[0124] Furthermore, said second corresponding part 442 of the actuating member 44 is configured to slide in the second housing 56 between the open position and the closed position of the mold 14, that is to say from the open position to the closed position and vice versa.

[0125] The first housing 54 and the second housing 56 are open towards each other.

[0126] The first housing 54 and the second housing 56 are part of the zone of ZR reception.

[0127] The first housing 54 and the second housing 56 make it possible to guide the actuating member 44 between the open and closed positions of the mold 14.

[0128] The cooling channel 64 of the first arm 41 and the cooling channel 64 of the second arm 42 are shown in dotted lines in [Fig.2].

[0129] Each cooling channel 64 is capable of circulating a cooling fluid.

[0130] For example, the cooling channels 64 of the first and second arms 41, 42 are in fluid communication with cooling channels provided in the slide 16 so as to cool the third molding surface 32.

[0131] For example, the cooling channel 64 of the first arm 41 is arranged in the body 51 of the first arm 4L.

[0132] For example, the cooling channel 64 of the second arm 42 is provided in the body 52 of the second arm 42.

[0133] For example, one of the cooling channels 64 of one of the arms among the first arm 41 and the second arm 42 is a cooling fluid inlet channel and the other of the cooling channels of the other of the arms among the first arm 41 and the second arm 42 is a cooling fluid discharge channel.

[0134] For example, the external face 51B of the body 51 of the first arm 41 and the external face 52B of the body 52 of the second arm 42 comprise said guide member 66 intended to cooperate with one of the two guide elements 20, called complementary guide element 20, of the molding tool 10 so as to guide the translation of the slide 16 between the molding, disengagement and spaced positions.

[0135] For example, each guide member 66 has a shape complementary to that of the guide element 20.

[0136] For example, each of the two guide members 66 comprises a groove.

[0137] For example, for each arm among the first arm 41 and the second arm 42, the guide member 66 is formed by the external face 51B, 52B of this arm 41, 42.

[0138] In this case, for example, each guide element 20 forms a rib engaging in the corresponding groove.

[0139] The actuating member 44 is described below with reference to FIGS. 1 to 5.

[0140] The actuating member 44 is provided on the second mold part 14B.

[0141] For example, the actuating member 44 is integral with the second part of the mold 14B and is therefore a portion of the second part of the mold 14B.

[0142] The actuating member 44 is offset relative to the second molding surface 26 in the direction of the useful face 16B of the slide 16 in the longitudinal direction X.

[0143] The actuating member 44 is integral in movement with the second mold part 14B.

[0144] The actuating member 44 is movable relative to the first mold part 14A in the actuation direction D between the open and closed position of the mold 14.

[0145] As visible in Figures 1 and 3, at least a portion of the actuating member 44 is received in the receiving zone ZR in the closed position of the mold 14 and therefore in the molding position of the slide 16.

[0146] As visible in [Fig.3], the actuating member 44 has a cross-section of shape substantially complementary to that of the receiving zone ZR.

[0147] The actuating member 44 comprises a bearing face 44A, a first actuating face 44B1, the second stop surface S2, a second actuating face 44B2, the fourth stop surface S4 and a face 44C intended to be in contact with a part of the first mold part 14A in the closed position of the mold 14, hereinafter called “contact face 44C”.

[0148] The bearing face 44A extends in the transverse direction Y.

[0149] In the closed position of the mold 14 and therefore in the molding position of the slide 16, the bearing face 44A extends along the useful face 16B of the slide 16 in the transverse direction Y.

[0150] The bearing face 44A is inclined relative to the actuation direction D in the direction of the useful face 16B of the slide 16 so as to bear against the useful face 16B of the slide 16 in the closed position of the mold 14 and the molding position of the slide 16.

[0151] The angle of inclination of the bearing face 44A is equal to the angle Al (visible in [Fig.l]).

[0152] This arrangement allows during the movement of the first mold part 14A according to the actuation direction D in the direction of the opening O of the mold 14 a spacing of the actuation member 44 in a direction opposite to the useful face 16B of the slide 16 and also to maintain the slide 16 in its molding position in the closed position of the mold 14, in the case where an undesirable external disturbance, such as a vibration, would tend to move the slide 16 outside its molding position.

[0153] The first actuating face 44B1 is opposite the bearing face 44A in the translation direction T.

[0154] The first actuating face 44B1 has the second stop surface S2 and optionally a first beveled portion 68.

[0155] The first actuating face 44B1 is arranged opposite the stop wall 61 of the first arm 41 in the closed position of the mold 14.

[0156] The first actuating face 44B1 is part of said first corresponding part 44i of the actuating member 44, intended to be received in the first housing 54 in the closed position of the mold 14.

[0157] The second stop surface S2 is a flat surface inclined relative to the actuation direction D.

[0158] The second stop surface S2 is inclined relative to the actuation direction D by a non-zero angle.

[0159] The second stop surface S2 is inclined relative to the actuation direction D in a direction opposite to the useful face 16B of the slide 16 in the closed position of the mold 14.

[0160] Said angle of inclination of the second abutment surface S2 is advantageously equal to the angle A2.

[0161] The second stop surface S2 has a dimension defined in a plane perpendicular to the actuation direction D and to the translation direction T ([Fig.l]).

[0162] The first beveled portion 68 extends between the second abutment surface S2 and the contact face 44C.

[0163] The first beveled portion 68 is inclined relative to the actuation direction D.

[0164] The first beveled portion 68 is inclined relative to the actuation direction D towards the useful face 16B of the slide 16 in the closed position of the mold 14.

[0165] The first beveled portion 68 is not intended to cooperate with the first arm 4L

[0166] The second actuating face 44B2 is opposite the bearing face 44A in the translation direction T.

[0167] The second actuating face 44B2 has the fourth stop surface S4 and optionally a second beveled portion (not visible in the figures).

[0168] The second actuating face 44B2 is arranged opposite the stop wall 62 of the second arm 42 in the closed position of the mold 14.

[0169] The second actuating face 44B2 is part of the second corresponding part 442 of the actuating member 44, intended to be received in the second housing 56 in the closed position of the mold 14.

[0170] The fourth stop surface S4 is a flat surface inclined relative to the actuation direction D.

[0171] The fourth stop surface S4 is inclined relative to the actuation direction D by a non-zero angle.

[0172] Like the second stop surface S2, the fourth stop surface S4 is inclined relative to the actuation direction D in a direction opposite to the useful face 16B of the slide 16 in the closed position of the mold 14.

[0173] Said angle of inclination of the fourth abutment surface S4 is advantageously equal to the angle A2.

[0174] The fourth stop surface S4 has a dimension defined in a plane perpendicular to the actuation direction D and to the translation direction T.

[0175] Said dimension of the fourth abutment surface S4 is equal to the dimension of the second abutment surface S2.

[0176] The first and second abutment surfaces S1, S2 cooperate with each other between the closed and open positions of the mold 14 to drive the translation of the slide 16 between the molding and intermediate disengagement positions only.

[0177] In other words, the first and second abutment surfaces S1, S2 cooperate with each other during the passage of the mold 14 from the closed position of the mold 14 into the open position of the mold 14 to cause the translation of the slide 16 from the molding position into the intermediate disengagement position only.

[0178] The second stop surface S2 applies a force parallel to the actuation direction D directed onto the first stop surface SI, this having the effect of causing the slide 16 to translate between the molding and intermediate disengagement positions.

[0179] Further, in the specific example described herein, the third and fourth abutment surfaces S3, S4 cooperate with each other during passage of the mold 14 between the closed and open positions to cause the translation of the slider 16 between the molding and intermediate disengagement positions only.

[0180] In other words, the third and fourth abutment surfaces S3, S4 cooperate with each other during the passage of the mold 14 from the closed position of the mold 14 into the open position of the mold 14 to cause the translation of the slide 16 of the molding position in the intermediate disengagement position only.

[0181] In particular, the fourth stop surface S4 applies a force parallel to the actuation direction D directed onto the third stop surface S3, this having the effect of causing the slide 16 to translate between the molding and intermediate disengagement positions.

[0182] The disengagement stroke CD slider 16 depends on the inclination of the first, second, third and fourth stop surfaces SI, S2, S3, S4 as well as the dimensions of the first, second, third and fourth stop surfaces SI, S2, S3, S4.

[0183] The second beveled portion extends between the second abutment surface S2 and the contact face 44C.

[0184] The second beveled portion is inclined relative to the actuation direction D.

[0185] The second beveled portion is inclined relative to the actuation direction D in the direction of the useful face 16B of the slide 16 in the closed position of the mold 14.

[0186] The second beveled portion is not intended to cooperate with the second arm 42.

[0187] The first and second beveled portions form a safety system when closing the mold 14 in the event of an incorrect position of the slide 16 to guide the actuating member 44 in the first and second housings 54, 56 and prevent breakage of the molding tool 10.

[0188] The contact face 44C is in contact with a portion of the first mold part 14A in the closed position of the mold 14.

[0189] The contact face 44C connects the bearing face 44A to the actuating faces 44B1 and 44B2.

[0190] As visible in [Fig.l], said first corresponding part 44i of the member arranged in the first housing 54 in the closed position of the mold 14 comprises the first actuating face 44B1, a part of the bearing face 44A arranged opposite the first actuating face 44B1 in the translation direction T and said part of the contact face 44C.

[0191] Said second corresponding part 442 of the actuating member 44 intended to be arranged in the second housing 56 in the closed position of the mold 14 comprises the second actuating face 44B2, a part of the bearing face 44A arranged opposite the second actuating face 44B2 in the translation direction T and said part of the contact face 44C.

[0192] The cylinder 46 is configured to translate the slide 16 between the intermediate disengagement position and the demolding position only, when the mold 14 is in the open position.

[0193] In other words, the cylinder 46 is configured to drive the translation of the slide 16 from the intermediate disengagement position into the demolding position and vice versa.

[0194] In other words, between the molding position and the intermediate position of disengagement of the slide 16, the cylinder 46 is inactive, that is to say that a rod 72 of the cylinder 46 is immobile.

[0195] In the embodiment described herein, the molding tool 10 comprises a single ram 46.

[0196] The jack 46 is connected to the slide 16.

[0197] The jack 46 is arranged substantially in the center of the slide 16 in the transverse direction Y.

[0198] In particular, the cylinder 46 is configured to be actuated according to a predefined control law. For example, the cylinder 46 can be controlled by an injection press.

[0199] The predefined control law depends on the position of the slider 16.

[0200] For example, the predefined control law depends on the position of the slide 16 and the position of the mold 14.

[0201] The predefined control law can be seen as a function taking as input parameter the position of the slide 16 and as output the control of the cylinder 46 connected to the slide 16.

[0202] For example, the predefined control law includes actuating the cylinder 46 once the slider 16 is in the intermediate disengagement position to translate the slider from the intermediate disengagement position into the demolding position.

[0203] Thus, the predefined control law delivers a command to activate the cylinder 46 when the position of the slide 16 is equal to the intermediate disengagement position.

[0204] In particular, the predefined control law delivers a command to activate the cylinder 46 when the position of the slide 16 is equal to the intermediate disengagement position and the mold position 14 is equal to the open position.

[0205] For example, the predefined control law comprises the actuation of the cylinder 46 once the slider 16 is in the demolding position and the mold 14 in the open position to translate the slider from the demolding position into the intermediate disengagement position.

[0206] Thus, the predefined control law delivers a command to activate the cylinder 46 when the position of the slide 16 is equal to the demolding position and when the mold 14 is in the open position.

[0207] The predefined control law is for example stored in a computer of the molding tool 10.

[0208] The command delivered by the predefined control law is for example received by an activation unit of the cylinder 46 connected to the cylinder 46 to cause the actuation of the cylinder 46 so as to cause the translation of the slide 16 between the intermediate disengagement position and the demolding position.

[0209] The jack 46 comprises for example a cylinder 70 and a rod 72.

[0210] The cylinder 70 delimits an internal volume. The cylinder 70 comprises a piston 74 separating the internal volume of the cylinder 70 into two chambers isolated from each other. One or more orifices (not shown) make it possible to introduce or evacuate a fluid into one or other of the chambers and thus move the piston 74 in the translation direction T and therefore cause the translation of the rod 72 of the jack 46.

[0211] The rod 72 has a first end 72A and a second end 72B.

[0212] The first end 72A of the rod 72 is connected to the useful face 16B of the slider 16.

[0213] The first end 72A of the rod 72 is connected to the center of the useful face of the 16B of the slide 16 in the transverse direction Y.

[0214] The first end 72A of the rod 72 is connected to the useful face 16B of the slider 16 via the connecting part 48.

[0215] The second end 72B of the rod 72 is connected to the piston 74.

[0216] The rod 72 is movable in translation relative to the cylinder 70 when the jack 46 is activated.

[0217] For example, the cylinder 46 is a hydraulic cylinder. In this case, said fluid is a liquid.

[0218] Alternatively, the cylinder 46 is a pneumatic cylinder. In this case, said fluid is a gas.

[0219] As a further variant, the jack 46 is an electric jack.

[0220] Alternatively, the molding tool 10 comprises at least two jacks.

[0221] The connecting part 48 is integral with a part of the useful face 16B of the slide 16.

[0222] As can be seen in particular in [Fig.2], the connecting part 48 delimits with said part of the useful face 16B of the slide 16 a retaining housing 78 for the first end 72A of the rod 72 of the jack 46. The rod 72 of the jack 46 cannot be extracted from the retaining housing 78 when the rod 72 slides when the jack 46 is actuated.

[0223] The connecting part 48 comprises for example two side walls extending projecting from the useful face 16B of the slide 16 in the translation direction T and a transverse wall substantially perpendicular to the side walls, extending substantially in the transverse direction Y.

[0224] The transverse wall is arranged opposite a portion of the useful face 16B of the slide 16 in the translation direction T.

[0225] The transverse wall defines a stop zone 80 of the first end 72A of the rod 72 of the jack 46. Thus, thanks to this stop zone 80, the first end 72A of the rod 72 of the jack 46 cannot be extracted from the housing.

[0226] The retaining housing 78 has a length allowing the displacement of the slide 16 in the translation direction T in the demolding direction DM relative to the first end 72A of the rod 72 of the jack 46 without interaction with the latter when the slide 16 passes from the molding position into the intermediate disengagement position.

[0227] In particular, when the slide 16 is in the molding position, the first end 72A of the rod 72 of the jack 46 is spaced from the useful face 16B of the slide by at least the length CD in the translation direction T so as to allow the translation of the slide 16 from the molding position into the intermediate disengagement position without interfering with the first end 72A of the slide 16.

[0228] For example, the molding tool 10 comprises an elastic return element 76 for returning the slide 16 to the intermediate disengagement position, the elastic return element 76 preferably extending between a wall integral in movement with the slide 16 and a support zone of the molding tool 10.

[0229] The elastic return element 76 of the slider 16 is configured to return the slider 16 to the intermediate disengagement position when the slider 16, initially in the intermediate disengagement position, is subjected to a force (in particular external disturbance) tending to move it outside this intermediate disengagement position.

[0230] In the example described in Figures 1 to 5, the wall integral with the slide 16 in movement is the transverse wall of the connecting part 48 and in particular the stop zone 80 and the support zone is the end 76A of the rod 72 of the jack 46.

[0231] For example, as seen in Figures 1 to 5, the elastic return element 76 extends around a portion of the rod 72 of the jack 46.

[0232] The elastic return element 76 is for example a spring, in particular a compression spring.

[0233] For example, such a spring is threaded around said part of the rod 72 of the jack 46.

[0234] The elastic return element 76 is capable of having a compressed (or pre) state constrained) when the slider 16 is in the molding position and a decompressed state when the slider 16 is in the intermediate disengagement position.

[0235] The elastic return element 76 in the decompressed state is capable of preventing the slide 16 from returning to the molding position from the intermediate disengagement position, in particular when the actuating member 44 is no longer in contact with the guide arm(s) 41, 42.

[0236] In the demolding position, the elastic return element 76 is also in the decompressed state.

[0237] Indeed, the force required to constrain the elastic return element 76 is greater than the force required to move the slide 16 between its intermediate disengagement position and its demolding position. In other words, the elastic return element 76 is not constrained between the intermediate position and the demolding position of the slide 76.

[0238] Alternatively, the wall integral in movement with the slide 16 is a wall of the slide 16 itself and the support zone is the first part 14A of the mold 14.

[0239] In other words, the elastic return element 76 extends between the first mold part 14A and the slide 16.

[0240] A method of producing a molded element 12 from molding material is described below.

[0241] As shown in [Fig. 1], the mold 14 is initially in the closed position and the slider 16 in the molding position.

[0242] Furthermore, the elastic return element 76 is in the compressed state.

[0243] In this position of the mold 14 and the slide 16, the molding material is injected into the molding cavity 28.

[0244] In this position of the mold 14 and the slide 16, the actuating member 44 is received in the receiving zone ZR.

[0245] In this position of the mold 14 and the slide 16, the bearing surface 44A of the actuating member 44 bears against the useful face 16B of the slide 16.

[0246] In particular, in the closed position of the mold 14, the first corresponding part 44i of the actuating member 44 is received in the first housing 54 and the second corresponding part 442 of the actuating member 44 is received in the second housing 56.

[0247] Thus, said first and second corresponding parts 44b 442 of the actuating member 44 are interposed between a part of the useful face 16B of the slider 16 and the stop faces 61, 62 of the bodies 51, 52 of the first and second arms 41, 42.

[0248] The second abutment surface S2 faces a portion of the first abutment surface SI.

[0249] Furthermore, the fourth abutment surface S4 faces a portion of the third abutment surface S3.

[0250] Furthermore, the contact face 44C of the actuating member 44 bears against a complementary face portion of the first mold portion 14A.

[0251] Then, the mold 14 is moved from its closed position to its open position in the actuation direction D in the opening direction O.

[0252] In particular, during the movement of the mold 14 from its closed position into its open position, the second mold part 14A is moved in the actuation direction D in the opening direction O of the mold 14.

[0253] Furthermore, during the movement of the mold 14 from its closed position to its open position, the first stop surface S1 cooperates with the second stop surface S2 and the third stop surface S3 cooperates with the fourth stop surface S4. The cooperation of the first stop surface S1 and the second stop surface S2 is visible in [Fig.4].

[0254] During the cooperation of the stops S1 and S2, respectively S3 and S4, the second stop surface S2 exerts a force directed in the actuation direction D on the first stop surface S1 and the fourth stop surface S4 exerts a force directed in the actuation direction D on the third stop surface S3, which has the effect of translating the arms 41, 42 in the translation direction T in a demolding direction DM, i.e. opposite to the first molding surface 22 and therefore of translating the slide 16 from the molding position into the intermediate disengagement position.

[0255] Thus, as visible in [Fig.4], during the opening of the mold 14 between the closed and open position and therefore during the movement of the actuating member 44 in the actuation direction D in the opening direction O, the slide 16 performs the stroke CD between its molding position and its intermediate disengagement position.

[0256] During the translation of the slide 16 from the molding position into the intermediate disengagement position, the cylinder 46 is inactive. In other words, the rod 72 of the cylinder 46 is stationary.

[0257] Furthermore, during the translation of the slide 16 from the molding position into the intermediate disengagement position, the elastic return element 76 passes from its compressed position into its decompressed position due to the movement of the slide 16 and therefore of the connecting part 48 in the translation direction T in the demolding direction DM relative to the first end 72A of the rod 72 of the jack 46 which remains stationary.

[0258] Once the slide 16 is in the intermediate disengagement position ([Fig.4]) and the mold 14 is in the open position ([Fig.5]), the jack 46 is actuated to translate the slide 16 in the translation direction T in the demolding direction DM from its intermediate disengagement position into its demolding position.

[0259] In particular, in the open position of the mold 14, the first corresponding part 44i of the actuating member 44 is extracted from the first housing 54 and the second corresponding part 442 of the actuating member 44 is extracted from the second housing 56 in the open position of the mold 14.

[0260] Thus, once the slide 16 is in the intermediate disengagement position, the predefined control law delivers an activation command for the cylinder 46.

[0261] The activation command comprises the translation of the rod 72 in the translation direction T in the demolding direction DM, which causes the translation of the slide 16 from the intermediate disengagement position into the demolding position.

[0262] During the passage of the slide 16 from the intermediate disengagement position, the elastic return element 76 remains in its decompressed position.

[0263] As seen in [Fig.5], once the slide 16 is in the demolding position, the molded element 12 can be removed from the molding tool 10.

[0264] To return the mold 14 to the closed position and the slide 16 to the molding position, the jack 46 is first actuated to translate the slide 16 in the translation direction T in the molding direction M from its demolding position to its intermediate disengagement position.

[0265] Thus, for example, the predefined control law delivers a command to activate the cylinder 46.

[0266] The activation command comprises the translation of the rod 72 in the translation direction T in the molding direction M, which causes the translation of the slide 16 from the demolding position into the intermediate disengagement position.

[0267] Then, the mold 14 is closed. During the passage of the mold 14 from the open position into the closed position, the second mold part 14B is translated in the actuation direction D in the closing direction F and, in this example, against the return force exerted by the elastic return member 76. Each part 44i and 442 of the actuation member 44 is then inserted into its respective housing 54, 56.

[0268] This causes the actuating member 44 to cooperate with the slider 16. This cooperation causes the slider 16 to translate from the intermediate disengagement position into the molding position.

[0269] In particular, the inclined useful face 16B of the slide 16 and the bearing face 44A of the actuating member 44, also inclined, cooperate with each other during the passage of the mold 14 from the open position of the mold 14 into the closed position of the mold 14, which causes the translation of the slide 16 from the intermediate disengagement position into the molding position only.

[0270] The molding tool 10 is less bulky than the molding tools of the state of the art.

[0271] In particular, thanks to the invention, it is possible to tilt the useful face 16B of the slide 16 relative to the actuation direction D by an angle strictly less than the angle of inclination relative to the actuation direction D of the slide 16 of the prior art. As a result, the molding tool 10 is less bulky according to the translation direction T.

[0272] Furthermore, thanks to the invention, the displacement device 18 is less bulky in the actuation direction D. Indeed, the height of the actuation member 44 is strictly less than the height of the demolding fingers of the state of the art. As a result, the molding tool 10 is less bulky in the actuation direction D.

[0273] Thanks to the cooperation of the abutment surfaces SI with S2 and S3 with S4 to move the slide 16 from the molding position into the intermediate disengagement position, a “detachment” of the slide 16 from the molded element 12 is achieved. Thus, the mechanical movement of the actuating member 44 relative to each arm 41, 42 and therefore the cooperation of the abutment surfaces of the abutment surfaces SI with S2 and S3 with S4 makes it possible to “break the inertia” of the slide 16. This therefore also makes it possible to use a jack 46 generating a less significant force compared to the case where only a jack 46 would be used to translate the slide 16 between the molding position and the demolding position.

[0274] Due to the fact that the molding tool 10 according to the invention comprises the jack 46, the guidance and control of the stroke of the slide 16 is more precise than in the prior art. Indeed, the jack 46 is an active element capable of being controlled precisely.

[0275] Furthermore, the jack 46 makes it possible to prevent any jamming of the slide 16 between the intermediate disengagement and demolding positions.

[0276] Furthermore, the cylinder 46 allows easy maintenance of the displacement device 18.

[0277] Because the arms 41, 42 have cooling channels, cooling is simpler and the cooling system is less bulky. Indeed, thanks to the invention the cooling channels are directly integrated inside the arms 41, 42 and are therefore not bulky.

Claims

Claims

1. Molding tool (10) for producing a molded element (12), the molding tool (10) comprising: - a mold (14) comprising a first mold part (14A) delimiting a first molding surface (22) and a second mold part (14B) delimiting a second molding surface (26), the mold (14) being movable in an actuation direction (D) between a closed position in which the first and second molding surfaces (22, 26) delimit between them at least a part of a molding cavity (28) and an open position in which the first and second mold parts (14A, 14B) are spaced apart from each other, - a slider (16) connected to the first mold part (14A), the slider (16) comprising a molding face (16A) delimiting a third molding surface (32) and a useful face (16B), the slider (16) being movable in translation relative to the first mold part (14A) in a translation direction (T) distinct from the actuation direction (D) between a molding position in which the mold (14) is in the closed position and in which the third molding surface (32) delimits with the first and second molding surfaces (22, 26) said part of the molding cavity (28) and a demolding position in which the mold (14) is in the open position, the slider (16) being, in addition, movable in translation relative to the first mold part (14A) in an intermediate disengagement position, the intermediate disengagement position being located between the molding position and the demolding position,and the molding tool (10) comprising a device (18) for moving the slide (16) between the molding, intermediate disengagement and demolding positions, the moving device (18) comprising:, - at least one arm (41, 42) for guiding the slide (16) in translation projecting from the useful face (16B) of the slide (16) in the translation direction (T), the arm (41, 42) having a first stop surface (SI), - an actuating member (44) provided on the second mold part (14B) having a second abutment surface (S2), the first and

2.

3. second stop surfaces (SI, S2) cooperating together during the passage of the mold (14) between the closed and open positions of the mold (14) to cause the translation of the slide (16) only between the molding and intermediate disengagement positions, - a jack (46), the jack (46) being configured to translate the slide (16) only between the intermediate disengagement position and the demolding position, characterized in that the displacement device (18) comprises a first arm (41) for guiding the slide (16) projecting from the useful face (16B) of the slide (16) in the translation direction (T) and a second arm (42) for guiding the slide (16) projecting from the useful face (16B) of the slide (16) in the translation direction (T), the first arm (41) having the first stop surface (SI), the second arm (42) having a third stop surface (S3),the actuating member (44) having a fourth stop surface (S4), the third and fourth stop surfaces (S3, S4) cooperating together during the passage of the mold (14) between the closed and open positions to cause the translation of the slide (16) between the molding and intermediate disengagement positions., The molding tool of claim 1, wherein the first abutment surface (S1) is a planar surface inclined relative to the actuation direction (D) and the second abutment surface (S2) is a planar surface inclined relative to the actuation direction (D), the second abutment surface (S2) applying a force substantially parallel to the actuation direction (D) directed onto the first abutment surface (S1) during the cooperation of the first and second abutment surfaces (S1, S2) with each other to cause the translation of the slide (16) between the molding and intermediate disengagement positions, the first abutment surface (S1) and the second abutment surface (S2) being advantageously such that a stroke (CD) of the slide (16) between the molding position and the intermediate disengagement position is less than or equal to 10% of the stroke (CT) of the slide (16) between the molding position and the demolding position. Molding tool according to claim 1 or 2, in which the arm (41, 42) comprises a guide member (66) intended to cooperate with a complementary guide element (20) of the molding tool (10) so as to guide the translation of the slide (16) between the positions of molding, intermediate disengagement and demolding.

4. A molding tool according to any preceding claim, wherein the arm (41, 42) comprises a body (51, 52) having internally at least one cooling channel (64) in which a cooling fluid is capable of circulating so as to cool at least the third molding surface (32).

5. Molding tool according to any one of claims 1 to 4, in which the first arm (41) and the second arm (42) are spaced from each other in a direction substantially perpendicular to the translation (T) and actuation (D) directions, the first arm (41) and the second arm (42) delimiting between them a receiving zone (ZR) for the actuation member (44) when the mold (14) is in the closed position.

6. Molding tool according to claim 5, wherein the first arm (41) and the second arm (42) respectively comprise a body (51, 52) having an inner face (51A, 52A) and an outer face (51B, 52B) opposite the inner face (51A, 52A), the inner faces (51A, 52A) of the first arm (41) and the second arm (42) delimiting at least in part the receiving zone (ZR), at least a portion (61) of the inner face (51A) of the first arm (41) having the first abutment surface (S1) and at least a portion (62) of the inner face (52A) of the second arm (42) having the third abutment surface (S3).

7. Molding tool according to any one of claims 4 to 6, wherein the first arm (41) delimits with a first corresponding part of the useful face (16B) of the slide (16) a first housing (54) receiving a first corresponding part (44J) of the actuating member (44) in the closed position of the mold (14) and the second arm (42) delimits with a second corresponding part of the useful face (16B) of the slide (16) a second housing (56) receiving a second corresponding part (442) of the actuating member (44) in the closed position of the mold (14), the first housing (54) and the second housing (56) having a concave shape in at least one plane substantially perpendicular to the actuation direction (D) and making it possible to guide the actuating member (44) between the open and closed positions of the mold (14).

8. A molding tool according to any preceding claim, wherein the cylinder (46) is configured to be actuated according to a predefined control law, the predefined control law

9. depending on the position of the slide (16), the jack (46) advantageously comprising a movable rod (72), one of the ends of the rod (72) of the jack (46) being connected to a part of the useful face (16B) of the slide (16). A method of producing a molded element (12) using a molding tool (10) according to any preceding claim, the method of producing comprising the following steps: - placing the mold (14) in the closed position, the slide (16) being in the molding position, - producing the molded element (12) in the molding cavity (28), - placing the mold (14) in the open position by moving the first mold part (14A) and the second mold part (14B) apart from each other in the actuation direction (D), the slide (16) moving from the molding position into the intermediate disengagement position by the cooperation of the first stop surface (SI) and the second stop surface (S2) with each other when the mold (14) moves from the closed position into the open position, - once the slide (16) is in the intermediate disengagement position and the mold (14) is in the open position, actuating the cylinder (46), the cylinder (46) translating the slide (16) from the intermediate disengagement position into the demolding position, and - removing the molded element (12) from the molding tool (10).

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