Multi-parking system for injection molds
The multi-station parking system for injection molds addresses the inefficiencies of existing systems by enabling simultaneous multi-phase processing with conventional presses, reducing cycle time and costs through precise alignment and rotation mechanisms.
Patent Information
- Application Number
- FR2025008523
- Authority / Receiving Office
- FR · FR
- Patent Type
- Utility models
- Current Assignee / Owner
- Priority Date
- 2024-07-24
- Filing Date
- 2025-07-23
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-07-23
AI Technical Summary
Existing injection molding systems are expensive and suffer from mechanical gaps leading to undesirable displacements, making it difficult to produce parts with multiple materials efficiently and reducing cycle time and costs.
A multi-station parking system for injection molds featuring a central rod with a grooved flange and guide stud, allowing for simultaneous rotation and translation, eliminating mechanical play through a bayonet system and male-female coupling, enabling multiple phases within a single mold without increasing cycle time.
The system reduces cycle time and mold costs by allowing simultaneous multi-phase processing using conventional presses, ensuring precise alignment and reducing mechanical play.
Smart Images
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Abstract
Description
Title of the invention: Multi-parking system for injection molds technical field
[0001] The present utility model relates to the field of injection molds. More specifically, the present utility model relates to a multi-parking system for injection molds.
[0002] Situation
[0003] A mold is a piece of equipment that allows a workpiece to be given a certain shape; it generally consists of two or more half-shells that define a space corresponding to the shape of the part to be obtained. The mold is specially designed according to the transformation process used, such as injection molding, die casting, stamping, or foaming.
[0004] The characteristics and technology of the mold vary depending on the type of machining. Molds are closely linked to the type of material for which they will be used, whose viscosity, temperature, and characteristics determine numerous variables. The mold is a piece of equipment that only functions when inserted into a machine called a "press."
[0005] Injection molding is an industrial manufacturing process in which a plastic material is melted and injected at high pressure into a closed mold, which is opened after the product has solidified.
[0006] The injection molding cycle begins when the mold closes, then a material, usually a polymer, is injected into the mold cavity. Once the cavity is filled, a certain pressure is maintained to compensate for volume changes in the material. When the part has cooled sufficiently, the mold opens and the molded part is ejected.
[0007] Overmolding (also called "co-molding") is a specific multi-stage injection molding process in which two or more components are molded one on top of the other. Overmolding with inserts is commonly used to produce technical articles whose parts generally consist of a rigid load-bearing portion, made of metal or plastic, and an elastic rubber portion ensuring a seal. These articles are primarily used in the automotive, hydraulic, and sanitary sectors.
[0008] In co-molding, the molding process is quite complex; indeed, it is necessary to move the part from the first cavity (where the first material was molded) towards the second cavity (where the second material will be molded). Inserts made of non-plastic material can also be inserted.
[0009] There are different co-molding methods: a) "transfer system", which uses a mechanical arm that picks up the part from the first cavity (station) and repositions it in the second cavity; b) "rotary table presses", which move the article by rotating the moving part of the mold; this method requires a special press capable of moving these entire parts of the mold in a short time; c) "index system", generally implemented in rotary table presses which use a central pivot to rotate only certain parts of the mold; unlike the "rotary table press" system, it is not the entire moving part of the mold that is rotated, but only the area concerned by the change of position.
[0010] Cycle time, i.e. the time required to print a part, is one of the main variables that influence the cost of a printed product.
[0011] The Client has observed that these systems are very expensive and that, consequently, in the absence of this equipment, it is very difficult to print several materials.
[0012] DE4421410 Al describes a transmission unit for a molding machine by injection comprising an axially movable and rotating shaft with a cylindrical surface containing grooves extending from both ends. The grooves at one end are circumferentially offset from the grooves at the other end and are connected to each other at the center of the shaft by transition grooves. A guide stud engages in the groove and follows it.
[0013] However, the Client has observed that in the molding machine described above, there are gaps between the different mechanical elements which cause undesirable displacements between the elements and, consequently, do not allow for a satisfactory yield.
[0014] The Client therefore posed the technical problem of how to produce a device for the injection molding of several materials capable of reducing the cycle time and, consequently, the costs of the mold, using conventional injection presses.
[0015] Summary
[0016] The present utility model relates to a multi-parking system for injection molds such as that indicated in request 1.
[0017] The customer of the present utility model has indeed discovered, surprisingly, that the aforementioned technical problem can be solved efficiently and reliably by means of a multi-station parking system for injection molds comprising a central rod and a flange allowing the rod to slide central, a groove made in said central stem and consisting of a plurality of sections connected together.
[0018] The multiple parking system for injection molds further includes a guide stud intended to slide in said plurality of sections of said groove to allow rotation of said central rod, an insert fixed to one end of said central rod and integral with it, and at least one mechanical element capable of elastic deformation intended to interact with said guide stud.
[0019] Each of said sections of said groove is made up of parts connected to each other and having different depths.
[0020] In this way, thanks to the multiple parking system of the present utility model, it is possible to use conventional presses without a rotary table in order to have several stations during the different phases of molding or for other types of machining.
[0021] Indeed, in the multiple parking system of the present utility model, the central rod of the system first slides inside the flange; then, thanks to the difference in depth between the parts of the groove, the stud continues its movement along the deeper groove thanks to the interaction with said mechanical element, thus rotating the central rod and, consequently, the insert concerned by the change of position fixed to it.
[0022] It is therefore possible to carry out several different phases inside the same mold, and at the same time, so as not to increase the cycle time, while using conventional injection presses.
[0023] In addition, the multiple parking system of the present utility model includes a tie rod connected to said central rod and provided with an element enabling said central rod to slide and rotate at the same time inside said flange.
[0024] In this way, when the press pushes the tie rod, a translational movement is transmitted to the central rod, allowing its rotation at the same time.
[0025] According to a preferred embodiment, said element with which the drawbar is equipped is a bayonet system intended to engage with said central rod.
[0026] This facilitates the engagement between said tie rod and said central rod, which allows the rod to translate and rotate inside the flange.
[0027] According to a preferred embodiment, the multiple parking system of the present utility model further includes a plate equipped with a coupling device adapted to couple said central rod and said insert together.
[0028] In this way, any mechanical play between the two parts is eliminated. Consequently, even when the central rod and the insert are subjected to repeated and continuous rotations, the two parts remain perfectly joined to each other, in a solid and compact manner.
[0029] According to a preferred embodiment, said coupling device with which said plate is provided is a male-female coupling.
[0030] In this way, the play between the parts is also eliminated.
[0031] According to a preferred embodiment, each of said sections of said groove is essentially Y-shaped and comprises a first part, which corresponds to a first arm of the Y, and which has:
[0032] - a first part having a first constant depth (pl), in which said first part corresponds to a first section of the first arm of the Y.
[0033] - a second part, contiguous to said first part, in which the depth varies progressively from said first depth (pl) to a second depth (p2), different from said first depth (pl), and in which said second part corresponds to a second section of the first arm of the Y, and
[0034] - a third part, contiguous to said second part, having a depth constant substantially equal to said first depth (pl) of said first part, and in which said third part corresponds to the support of the two branches of the Y.
[0035] Thus, the groove begins with a first straight section of constant depth, then passes into a second contiguous section whose depth gradually varies until the end of this second section, opposite the first section. At this end of the second section, there is a first downward drop in depth, beyond which the stud, facilitated by the interaction with the elastic element, continues its path by passing into the third section, contiguous to the second section and again at a constant depth.
[0036] According to a preferred embodiment, each of said sections of said groove further comprises at least:
[0037] - a fourth part contiguous to said third part, in which the depth varies gradually from bottom to top, and
[0038] - a fifth part of constant depth, contiguous to said fourth part, where The fourth part and the fifth part together form the second branch of the Y-shaped groove.
[0039] In this way, once the stud has reached the end of the third section of the constant-depth groove (i.e., at the support for the two arms of the Y), the central rod is fully extended. In its return movement, the stud again travels the entire length of the third constant-depth section and reaches the point where, during the forward movement, it made the first downward jump (at the end of the second variable-depth section, the apex of which is located precisely at the junction point between the second and third sections). At this point, the stud, unable to exceed the first depth jump (this time upward), continues its The course first traverses the fourth part with variable depth (analogous to the second part seen above, but this time from bottom to top) and then the fifth part with constant depth, contiguous to the fourth part, where the fourth and fifth parts together form the second branch of the Y-groove. At the point of junction between said fourth part with variable depth and said fifth part with constant depth, there is a second jump in depth downwards, similar to the first jump in depth seen above and located at the point of junction between said first part with constant depth and said second part with variable depth.
[0040] According to a preferred embodiment, said fifth part at constant depth of a first section of said plurality of sections of said groove corresponds to a first part of a second section of said plurality of sections adjacent to said first section.
[0041] In this way, once the stud has traversed all the parts forming the first section of the groove, it is again in the position allowing it to begin a new path to cover the second section of the plurality of sections forming the groove, exactly as it did in the first section. Consequently, the central rod can be rotated as many times as there are groove sections.
[0042] According to a preferred embodiment, said first depth pl is less than said second depth p2.
[0043] In this way, when the guide stud travels through the second part of the groove, it uses the greater depth of the groove to lift the central rod and rotate it in a determined direction, for example in the counterclockwise direction.
[0044] According to another embodiment, the depths of the parts of the groove can be arranged so that the stud travels through these parts in the opposite direction to that described above, i.e. from the second branch of the Y and arriving at the first branch of the Y, with a corresponding rotation of the central rod in the opposite direction, for example clockwise.
[0045] According to a preferred embodiment, the difference in depth between said first depth pl and said second depth p2 has a ratio substantially equal to 1:1 with respect to the diameter of said guide stud, preferably of about 6 mm.
[0046] According to a preferred embodiment, said central rod is substantially cylindrical in shape.
[0047] According to a preferred embodiment, said flange allowing the sliding of said central rod is also substantially hollow semi-cylindrical in shape, in which the diameter of the central rod is slightly less than the diameter of the flange.
[0048] In this way, the central rod can slide vertically up and down, along the edge of said flange.
[0049] According to a preferred embodiment, said mechanical element capable of elastically deforming and able to interact with said guide stud is a spring.
[0050] In this way, the spring pushes the guide stud towards the bottom of the groove so that the guide stud itself can take advantage of the greater depth of the groove during its movement. The spring is therefore used to keep the guide stud always in contact with the groove in the central rod.
[0051] According to a first preferred embodiment, the spring is locked between the guide stud and a plate.
[0052] According to a first preferred embodiment, said insert is rectangular in shape and said groove is formed by two of said sections.
[0053] In this way, following the sliding of said guide stud within said portions of the two sections of the groove, the central rod is first lifted, then pivoted 90°, before being lowered again. During the lowering of the rod, the guide stud travels along the second arm of the Y-groove, thus allowing the rod to pivot an additional 90°. As a result, the insert, located at the top of the central rod, also pivots 180°, thus reversing its position.
[0054] According to a second embodiment, this insert is triangular in shape and three such sections are present.
[0055] In this way, as seen above for the first embodiment, following the sliding of said guide stud within said portions of the three sections of the groove, the central rod is first lifted, then pivoted 60°, before being lowered again. During the lowering of the rod, the guide stud travels along the second arm of the Y-groove, thus allowing the rod to pivot an additional 60°. As a result, the insert, located at the top of the central rod, also pivots 120°.
[0056] According to a third embodiment, this insert is square in shape and four such sections are present.
[0057] In this manner, analogously to what was seen above with reference to the first embodiment, following the sliding of said guide stud within said portions of the four sections of the groove, the central rod is first lifted and then pivoted 45°, before being lowered again. During the lowering of the rod, the guide stud travels along the second arm of the Y-groove, thus allowing the rod to pivot an additional 45°. As a result, the insert, located at the top of the central rod, also pivots 90°.
[0058] According to a preferred embodiment, the multi-parking system for injection molds of the present utility model further comprises a circuit of cooling suitable for cooling the molded parts positioned on top of said central rod.
[0059] According to a preferred embodiment, said central rod is further provided with drilling elements adapted to supply said inserts with water, air or oil.
[0060] According to a preferred embodiment, the length of said central rod and its stroke are variable, depending on the size of the mold.
[0061] According to a preferred embodiment, the Y-shaped groove is also variable depending on the number of stations.
[0062] According to a preferred embodiment, the diameter of the central rod is variable depending on the size of the molded part.
[0063] Other features and advantages of the present utility model will be better understood from the detailed description below of preferred, but not exclusive, embodiments, illustrated by way of example and not limitation with the accompanying drawings. In particular, in these drawings:
[0064] [Fig.1] shows an overview of one embodiment of the system of the present utility model, in which the central rod is in the rest position;
[0065] [Fig.2] shows the system of [Fig.1], in which the central rod is lifted and pivoted;
[0066] [Fig. 3] shows the system of [Fig. 1], again in its resting position, but with the insert rotated 180°;
[0067] [Fig.4] shows a detail of the system of [Fig.1], in which the guide stud and part of the groove can be seen;
[0068] [Fig. 5] shows a detail of the system of [Fig. 1], in which two can be seen consecutive Y-shaped sections of the groove;
[0069] [Fig.6] shows a detail of the stem of [Fig.1];
[0070] [Fig. 7] shows a detail of [Fig. 6], where the coupling plate is shown between the central rod and the insert, the rod not being connected to the insert;
[0071] [Fig.8] shows the detail of [Fig.7], with the rod connected to the insert by the plate of coupling;
[0072] [Fig.9] shows a detail of [Fig.1], in which the tie rod is shown before being connected to the central rod, separated from the latter;
[0073] [Fig. 10] shows a detail of [Fig. 1], in which is represented the tie rod connected to the central rod, seen in axonometric view from below;
[0074] [Fig. 1 1] shows a side view of the detail of [Fig. 10];
[0075] Figure 12 shows a detail of a first embodiment of the system of the [Fig.l], in which the rectangular-shaped insert and two parts of the groove are schematically represented;
[0076] Figure 13 shows a detail of a second embodiment of the present utility model, in which the triangular-shaped insert and three parts of the groove are schematically represented;
[0077] Figure 14 shows a detail of a third embodiment of the present utility model, in which the square-shaped insert and four parts of the groove are schematically represented. Detailed description
[0078] The following detailed description refers to particular embodiments of the system of the present utility model, without limiting its content.
[0079] With reference to Figures 1 to 12, a first embodiment of the system of the present utility model is described.
[0080] Fig. 1 shows in particular the cylindrical flange 2 inside which the central rod 1 slides; the rectangular insert 6 fixed to the upper end of the central rod 1 and integral with it; and the pull 8 for extraction.
[0081] Fig. 1 further shows, in particular, the cylindrical central rod 1 in its rest position, and the groove 4 made in the central rod 1 inside which the guide stud 3 can slide.
[0082] Figure 2 shows the same system as Figure 1, in which the central rod is raised and rotated 90° relative to the position shown in Figure 1. The insert 6, which is integral with the central rod 1, is also rotated 90°. In this regard, it should be noted that the positions of the elements indicated by A and B of the insert 6 in Figure 2 are different from those in Figure 1.
[0083] Figure 3 shows the same system as Figure 1 and Figure 2, in which the central rod is again lowered (thus returning to the rest position illustrated in Figure 1), but rotated 180° relative to the position shown in Figure 1. The insert 6, which is integral with the central rod 1, is also rotated 180°. In this regard, it should be noted that the positions of the elements indicated by A and B in Figure 3 are reversed relative to Figure 1.
[0084] Fig. 4 shows a detail of the system of figures 1, 2 and 3, in which parts 5a, 5b and 5c of an essentially Y-shaped section 4a of the groove 4 in which the guide stud 3 slides can be seen. At the point of junction between part 5b and part 5c, there is a first jump of depth 9a, as described in more detail below.
[0085] Fig. 5 shows a further detail of Fig. 4, where two consecutive sections 4a and 4b of the groove 4 can be seen, each consisting of the same parts 5a, 5b, 5c, 5d which together form a kind of Y. More precisely, the groove 4a begins with the first part 5a of a straight section with a constant depth pl (which corresponds to the first segment of the first arm of the Y), then passes to the second part 5b (adjacent to the first part 5a, which corresponds to the second segment of the first arm of the Y), the depth of which gradually varies until the maximum value p2 recorded at the end of the second part 5b, opposite the first part 5a. At the end of the second part, there is a first downward jump of depth 9a, beyond which the guide pin 3, facilitated by the interaction with the spring 7, continues its path by passing through the third part 5c, adjacent to the second part 5b (which corresponds to the support segment of the two arms of the Y), and again at a constant depth pl. Once the guide pin 3 has reached the terminal part of the third part 5c of the groove 4a at a constant depth (i.e., at the support of the two arms of the Y), the central rod is fully extended.In its return movement, the guide stud 3 again travels the entire third section 5c at a constant depth and reaches the point where, during the outward journey, it had made the first downward jump 9a. At this point, the guide stud 3, unable to go beyond the upward jump 9a, is not able to travel the second section 5b at a variable depth again and therefore continues its journey by first traversing the fourth section 5d at a variable depth (analogous to the second section 5b seen above, but this time from bottom to top) and then the fifth section 5e at a constant depth, contiguous with the fourth section 5d, where the fourth section 5d and the fifth section 5e together form the second branch of the Y-groove.At the point of junction between the fourth section 5d with variable depth and the fifth section 5e with constant depth, there is a second drop of depth 9b downwards, similar to the first drop of depth 9a seen above between the first section 5a with constant depth and the second section 5b with variable depth.
[0086] In this way, the guide stud 3 has traversed the entire cycle of section 4a of the groove, and the central rod 1 has undergone a 180° rotation, as has the insert 6 located at its top. At the end of this first cycle, the guide stud 3 begins a new cycle, traversing all parts of section 4b of the groove 4 in the same way as for section 4a, since the fifth part 5e of section 4a of the groove 4 corresponds exactly to the first part 5a of section 4b of the groove 4. [Fig. 5] also shows the first depth step 9c and the second depth step 9d present in section 4b, arranged analogously to the corresponding first depth step 9a and second depth step 9b seen above with reference to section 4a.
[0087] The spring 7 is used to keep the guide stud 3 always in contact with the groove 4 of the central rod 1. The spring 7 is locked between the guide stud 3 and a plate.
[0088] Figure 6 shows in detail the central rod 1, the insert 6, the stud 3, the spring 7, and the drilling elements 10 for supplying the inserts 6 with water, air, or oil. Furthermore, Figure 6 shows the plate 11 equipped with at least one coupling device 12, for example, of the male-female type, for coupling the central rod 1 and the insert 6. See Figures 7 and 8 in detail, in which, respectively, the rod 1 is not connected to the insert 6 (Figure 7) and the rod 1 is connected to the insert 6 via the coupling plate 12 (Figure 8). In this way, the presence of the plate 11 and the coupling devices 12 allows the central rod 1 and the insert 6 to be coupled together in such a way as to eliminate any mechanical play between the two parts.Therefore, even when the central rod 1 and the insert 6 are subjected to repeated and continuous rotations, the two elements 1 and 6 remain perfectly joined to each other, in a solid and compact manner.
[0089] Figures 9 to 11 show in detail the engagement between the drawbar 8 and the central rod 1 shown in [Fig. 1]. The drawbar 8 is fitted in its upper part with a bayonet fitting 13.
[0090] More specifically, [Fig.9] shows the drawbar 8 separated from the central rod 1; [Fig.10] shows, on the other hand, in an axonometric view from below, the drawbar 8 connected to the central rod 1, with the bayonet device 13 (not visible on [Fig.10]) inserted into the central rod 1. [Fig.11] shows a side view of the detail of [Fig.10].
[0091] Thanks to the presence of the bayonet device 13 with which the tie rod 8 is equipped, when the press pushes the tie rod 8, a translational movement is transmitted to the central rod 1, allowing it at the same time to rotate inside the flange 2.
[0092] Different embodiments can be obtained, depending on the shape of the insert and the number of sections 5 of the groove 4.
[0093] Whereas above, with reference to Figures 1 to 12, one embodiment has been shown in which the insert 6 has a rectangular shape and two sections 4a, 4b of the groove 4 are present, which cause a rotation of the insert of 180° (see in detail [Fig. 12]), Figures 13 and 14 show other embodiments.
[0094] In particular, [Fig. 13] shows a second embodiment of the system of the present utility model, in which the triangular-shaped insert 6 and three sections 4a, 4b, 4c of the groove 4, which cause a rotation of the insert by 120°, are schematically represented.
[0095] Similarly, [Fig. 14] shows a third embodiment of the system of the present utility model, in which the square-shaped insert and four sections 4a, 4b, 4c, 4d of the groove 4, which cause a rotation of the insert by 90°, are schematically represented.
[0096] Operationally, in a multi-parking system for injection molds according to the present utility model, the following phases occur in succession:
[0097] phase 1: closing the mold, by bringing the moving part closer to the fixed part;
[0098] phase 2: injection of the first material into the first cavity, closed mold;
[0099] phase 3: opening the mold, by moving the moving part away from the fixed part;
[0100] phase 4: displacement of the first material, now solidified, into the second cavity, open mold, by displacement of the central pivot of the multi-parking system, as described above;
[0101] phase 5: new closure of the mold, by bringing the moving part closer to the fixed part;
[0102] phase 6: injection of the second material into the second cavity; repetition of phase 2, closed mold;
[0103] phase 7: opening of the mold, by moving the moving part away from the fixed part;
[0104] phase 8: collection of molded articles, with open mold.
[0105] Thanks to the fact that the multi-parking system for injection molds of the This utility model allows several different phases to be performed inside the same mold (and at the same time), so as not to increase cycle time. The multi-station injection mold system of this utility model therefore reduces cycle time and mold costs, while using conventional injection molding machines.
[0106] The present utility model can be applied to molds, co-moldings or two-materials; however, it can be useful in general in all processes which require some rotation of the part, such as for example in the system of applying labels on plastic containers which provides for their application inside the mold before the forming phase, also called IML (In-Mold Labeling), or in a process of extracting the molded article, or even in the injection of the material into a mold.
[0107] Of course, persons skilled in the field will recognize many modifications and variants of the preferred embodiments described above, while remaining within the scope of the present utility model.
[0108] Therefore, the present utility model is not limited to the preferred embodiments described, which are illustrated by way of example and not limitation, but is defined by the following claims.
Claims
Demands
1. A multi-station system for injection molds comprising: - a central rod (1); - a flange (2), adapted to allow the central rod (1) to slide within it; - a groove (4) formed in the central rod (1), the groove (4) being made up of a plurality of interconnected sections (4a, 4b, 4c, 4d); - a guide stud (3) intended to slide within the plurality of sections (4a, 4b, 4d, 4d) of the groove (4) to allow the central rod (1) to rotate; - an insert (6) fixed to one end of the central rod (1) and integral with it;-at least one mechanical element (7) capable of elastic deformation suitable for interacting with said guide stud (3), in which each of said plurality of sections (4a, 4b, 4c, 4d) of said groove (4) is made up of parts (5a, 5b, 5c, 5d, 5e) connected together and having different depths, characterized in that the multiple parking system for injection molds further comprises a tie rod (8) connected to said central rod (1) and provided with an element (12) suitable for allowing said central rod (1) to slide and rotate at the same time inside said flange (2).;
2. The multiple parking system for injection molds according to claim 1, wherein said element (12) is a bayonet system (12) capable of engaging with said central rod (1).
3. The multiple parking system for injection molds according to any one of the preceding claims, further comprising a plate (11) provided with at least one coupling device (13) capable of coupling said central rod (1) and said insert (6) together.
4. A multi-station system for injection molds according to any one of the preceding claims, wherein each of said multiple sections (4a, 4b, 4d, 4d) of said groove (4) is substantially Y-shaped and comprises: -a first part (5a) having a first constant depth (pl), in which said first part (5a) corresponds to a first section of the first arm of the Y, -a second part (5b), contiguous to said first part (5a), in which the depth varies progressively from said first depth (pl) to a second depth (p2), different from said first depth (pl), and in which said second part (5b) corresponds to a second segment of the first arm of the Y, and -a third part (5c), contiguous to said second part (5b), having a constant depth substantially equal to said first depth (pl) of said first part (5a), and in which said third part (5c) corresponds to the support of the two branches of the Y.
5. The multiple parking system for injection molds according to claim 4, wherein each of said multiple sections (4a, 4b, 4c, 4d) of said Y-shaped groove (4) further comprises: a fourth part (5d) contiguous to said third part (5e), and having a variable depth, and a fifth part (5e) of constant depth, contiguous to said fourth part (5d), where the fourth part (5d) and the fifth part (5e) together form the second branch of the Y-shaped groove (4).
6. The multi-parking injection mold system according to claim 5, wherein said fifth part (5e) at constant depth of a first section (4a) of said plurality of sections (4a, 4b, 4c, 4d) of said groove (4) corresponds to a first part (5a) of a second section (4b) of said plurality of sections (4a, 4b, 4c, 4d) adjacent to said first section (4a).
7. The multi-station injection molding system according to any one of the preceding claims, wherein said central rod (1) and said flange (2) are both substantially cylindrical in shape, and wherein the diameter of said central rod (1) is slightly smaller than the diameter of said flange (2).
8. The multiple parking system for injection molds according to any one of the preceding claims, wherein said at least one mechanical element (7) capable of elastic deformation adapted to interact with said guide axis (3) is a spring.
9. The multiple parking system for injection molds according to any one of the preceding claims, wherein said insert (6) is rectangular in shape and two of said sections (5) are present or said insert (6) is triangular in shape and three of said sections (5) are present or said insert (6) is square in shape and with at least four of said sections (5).
10. The multi-station injection mold system according to any one of the preceding claims, wherein said central rod (1) is further provided with drilling elements (10) suitable for supplying said inserts (6) with water, air or oil.