Slide unit for a mould

Abstract

The invention relates to a slide unit for a mould for forming an injection-moulded or pressure-die-cast part having undercuts, wherein the slide unit has a slide main body and a slide head arranged on the slide main body, wherein the slide main body is arranged, together with the slide head, so as to be displaceable with respect to a slide guide, and the slide main body can thus be introduced, together with the slide head, in a slide movement direction specified by the slide guide, into a cavity formed between at least two mould plates of the mould. The problem addressed by the invention is that of reducing the outlay for setting up a slide unit on a mould. This problem is solved in that a wedge plate is arranged between the slide head and the slide main body, and in that this wedge plate can be displaced, along its rising flank and transversely to the slide movement direction, on a wedge plate guide, and in that a position of the wedge plate on the wedge plate guide specifies a distance between the slide head and the slide main body in the slide movement direction. The invention also relates to slide units having alternative positioning of a wedge plate.

Description

[0001] Slide unit of a forming tool

[0002] The invention relates to a slide unit of a molding tool for forming an injection-molded or die-cast part with undercuts, wherein the slide unit has a slide base body and a slide head arranged on the slide base body, wherein the slide base body with the slide head is arranged to be displaceable relative to a slide guide and the slide base body with the slide head can thus be inserted into a cavity formed between at least two mold plates of the molding tool along a slide movement direction specified by the slide guide.

[0003] To manufacture injection-molded or die-cast parts, molten material is heated and forced under pressure into a negative mold (mold). After being injected into the mold, the material cools and solidifies. The mold usually consists of a die-side plate and an ejector-side plate. The cavity between the two plates determines the shape and surface texture of the injection-molded or die-cast part. Once the finished part has cooled, the mold opens and releases it.

[0004] If the injection-molded or die-cast part is to have additional features such as lateral undercuts, additional slides are required on the mold. Slides are movable components that can be moved in and out of the cavity formed between the mold plates. When inserted into the cavity, these slides create additional negative contour sections to form the contour of the injection-molded or die-cast part, and in particular to create undercuts. To eject the finished injection-molded or die-cast part, the inserted slides are withdrawn from the cavity before or during the opening of the mold (separation of the mold plates), thus releasing the undercut.

[0005] A slide unit for mold tools consists of a slide head, which is slidably arranged via a slide base body in a slide guide of a first mold plate, and a drive element, which moves the slide base body along the slide guide in a slide movement direction. From DE 38 06 064 A1, a slide unit is known in which the drive element is formed by an inclined column arranged on a second mold plate and inclined relative to the slide movement direction. When the first and second mold plates move into contact, the inclined column engages in a guide channel of the slide base body that is aligned parallel to the inclined column. Due to the orientation of the inclined column, when both mold plates move into contact, the slide base body with the slide head is moved in the slide guide along the slide movement direction.When the mold opens, the inclined column is pulled out of the slide body, thus moving the slide body and slide head in the opposite direction within the slide guide. Furthermore, a pressure insert is provided on the second mold plate. This pressure insert has an inclined surface that engages with a similarly inclined surface on the slide body to press the slide into a tightly closing end position when the two mold halves are closed.

[0006] The slide unit known from DE 10 2022 103 975 A1 has a drive web arranged on the second mold plate and inclined relative to the direction of slide movement, which engages in an inclined guide groove of the slide body. When the first and second mold plates move together, the drive web is guided in the guide groove, whereby the slide body with the slide head is moved along the slide guide by the inclined orientation of the guide groove along the direction of slide movement. When the mold opens, the drive web is pulled out of the guide groove of the slide body, and thus the slide body with the slide head moves in the opposite direction in the slide guide.

[0007] Such sliding units have generally proven their worth. However, setting up known sliding units is very time-consuming and therefore expensive.

[0008] The slides inserted into the mold must, in their final position, rest against the respective mold plate in such a way that no gap remains between the recesses in the mold plate and the slide through which material injected into the cavity could escape. If a gap remains between the slide and the recesses in the mold plate, there is a risk of flash formation, as liquid material is at least partially forced into this gap, cools, and solidifies. To meet the highest quality requirements of end customers, this must be prevented. Therefore, the slide must rest precisely against the recesses in the mold plate intended for it, or a defined contact pressure must be maintained between the slide contour and the contour of the recesses in the mold plate.This is achieved by the slide unit bearing against a pressure plate positioned between the slide unit and the mold base. The pressure plate must therefore be manufactured to precise dimensions. However, this requires a complex setup of the slide or slide element on the mold. For setup, injection-molded / die-cast parts are produced with the slide head in an initial position and then measured. If the resulting injection-molded / die-cast parts do not meet the specifications, the mold with the slide unit must be disassembled and the thickness of the pressure plate adjusted. If the slide head needs to penetrate deeper into the cavity, a thicker pressure plate is typically installed, or shims are inserted between the pressure plate and the mold base. Conversely, if the slide head already penetrates too deeply into the cavity, a thinner pressure plate is usually installed.For these assembly steps, the mold must be removed from the mold-holding system. After these complex assembly steps, injection-molded / die-cast parts are produced again. If the specifications for the injection-molded / die-cast parts are still not met, further disassembly of the mold and adjustment of the slide by modifying the pressure plate are necessary. Especially with the highest quality requirements, this requires a large number of steps until the specifications for the injection-molded / die-cast parts are met.

[0009] The object of the invention is therefore to reduce the effort required to set up a slide unit on a molding tool.

[0010] This task is solved by arranging a wedge plate between the slide head and the slide body, and by making this wedge plate displaceable along its rising flank and transversely to the direction of slide movement on a wedge plate guide, and by defining a position of the wedge plate on the wedge plate guide a distance between the slide head and the slide body along the direction of slide movement.

[0011] A wedge is a body in which two faces meet at an acute angle. The rising edge runs parallel to the direction in which the faces of the wedge meet.

[0012] By shifting the wedge plate along its rising flank and perpendicular to the slide movement direction, the slide head can be displaced relative to the slide body along the slide movement direction. This eliminates the need to disassemble the mold and slide unit during setup, as the position of the slide head can be changed by shifting the wedge plate even when the unit is installed. Setting up the slide unit is therefore considerably less time-consuming and thus significantly more economical than with conventional slide units.

[0013] In a first version, the wedge plate guide is arranged on the slide head.

[0014] Another embodiment provides that the wedge plate guide is arranged on the slide base body.

[0015] In an advantageous embodiment, the slide head, the wedge plate, and the slide body are mounted together via a screw connection and preloaded against the screw connection by a spring element. This holds the slide head, wedge plate, and slide body together. The spring element allows the wedge plate to slide between the slide head and the slide body against the contact pressure between them.

[0016] It is proposed that the spring element is a disc spring assembly.

[0017] The slide unit described above is particularly suitable for molds in which the drive element is formed by the fact that at least one inclined column, inclined relative to the direction of slide movement, is arranged on a first mold plate of the at least two mold plates of the mold and the slide guide is arranged in an opposite, second mold plate of the at least two mold plates of the mold, wherein, when the mold plates move towards each other, the inclined column engages in a guide channel of the slide body that is aligned parallel to the inclined column and interacts with this guide channel.

[0018] In a molding tool in which a drive web inclined relative to the direction of slide movement is arranged on a first mold plate of the at least two mold plates of the molding tool and the slide guide is arranged in an opposite, second mold plate of the at least two mold plates of the molding tool, and in which, when the mold plates move towards each other, the drive web engages in at least one guide groove of the slide body aligned parallel to the drive web and interacts with the guide groove, the problem is solved by arranging a wedge plate between a web side of the drive web facing the guide groove and a guide groove side facing this web side, and by making this wedge plate displaceable along its rising flank and transversely to the direction of slide movement on a wedge plate guide.

[0019] In one embodiment, the wedge plate guide is attached to the side of the drive web facing the guide groove.

[0020] Another embodiment provides that the wedge plate guide is attached to the guide groove side facing the web side.

[0021] The problem is also solved by arranging a wedge plate between the drive web and a side of a drive web receptacle of the first mold plate facing the drive web, and by making this wedge plate displaceable along its rising flank and transversely to the direction of slide movement on a wedge plate guide, and by defining a position of the wedge plate on the wedge plate guide a distance between the drive web and the side of the drive web receptacle of the first mold plate facing the drive web.

[0022] In all the aforementioned designs, it is proposed that the wedge plate be movable via an adjusting screw on the wedge plate guide.

[0023] In an advantageous embodiment, the wedge plate and wedge plate guide are one and the same component.

[0024] In a forming tool which has a pressure insert with a surface inclined to the direction of slide movement and this inclined surface engages with a parallel surface of the slide base body when the forming plates move towards each other, the problem is also solved by this,that the pressure insert has a wedge plate arrangement, and that one side surface of this wedge plate arrangement forms the inclined surface of the pressure insert, and that a side surface of the wedge plate arrangement opposite this forms abuts a side of the first mold plate facing the wedge plate arrangement, and that by displacing the wedge plate arrangement transversely to the slide movement direction, the thickness of this wedge plate arrangement can be adjusted along the slide movement direction, and that when the mold plates are closed, the thickness of this wedge plate arrangement along the slide movement direction determines a distance between the inclined surface of the pressure insert and the side of the first mold plate facing the wedge plate arrangement.

[0025] It is proposed that the wedge plate arrangement has two wedge plates lying on top of each other and that these wedge plates can be positioned relative to each other transversely to the direction of slide movement when the mold plates are open, and that the thickness of the wedge plate arrangement is determined by their relative position.

[0026] In an advantageous embodiment, the overlapping surfaces are arranged in a grid pattern. This grid pattern allows for the relative displacement of the two wedge plates within a predetermined grid dimension.

[0027] Exemplary embodiments of the invention are explained below with reference to the drawings. The drawings show:

[0028] Fig. 1 shows a cross-section of an embodiment of the sliding unit of a forming tool with inclined columns according to the invention.

[0029] Fig. 2 shows a schematic cross-section of a further embodiment of the sliding unit according to the invention.

[0030] Fig. 3 shows a detailed representation of a variant of the embodiment according to Fig. 2 as a schematic sectional view.

[0031] Fig. 4 shows a detailed representation of another variant of the embodiment according to Fig. 2 as a schematic sectional view.

[0032] Fig. 5 shows a detailed sectional view of the embodiment according to Fig. 3.

[0033] Fig. 6 shows a sectional view of a further embodiment of the sliding unit of a forming tool with inclined columns according to the invention.

[0034] Fig. 7 shows a spatial, partially sectional view of the pressure insert designed as a wedge plate arrangement 5 from Fig. 6.

[0035] Fig. 8 shows a further sectional view of the embodiment of the slide unit according to the invention as shown in Fig. 6, with screwing into the first mold plate from the pressure insert side.

[0036] Fig. 9 shows a further sectional view of the embodiment of the slide unit according to the invention as shown in Fig. 6, with screwing from the first side of the mold plate into the pressure insert.

[0037] The following descriptions refer to a slide unit 1 of a mold for forming an injection-molded or die-cast part with undercuts. This mold (not shown) has at least two mold plates that can be moved together. Internal contours are formed on the opposing sides of the mold plates, which, when the mold plates are closed, form a cavity. When the mold plates are moved together, a slide head 2 is inserted into the cavity by means of the slide unit 1. With a correctly configured slide unit 1, the contours of the mold plates that receive the slide head 2 are sealed by the slide head 2 itself. To form the injection-molded or die-cast part, a material liquefied by heating is introduced into this cavity.After the material has cooled and solidified, the mold plates are opened again, and the slide head 2 is also pulled out of the cavity during this process. Opening the mold plate allows the finished injection-molded or die-cast part to be removed from the mold or ejected from it using an ejection unit.

[0038] Fig. 1 shows a cross-sectional view of an embodiment of the slide unit 1 according to the invention. The slide unit 1 comprises a slide base body 3 and the slide head 2 arranged on the slide base body 3. A guide channel 4 for receiving an inclined column 18 (Fig. 6) is provided in the slide base body 3. The inclined column 18 (not shown) is inclined relative to the direction of slide movement and is arranged on the first mold plate 19 of the molding tool. When both mold plates close, the inclined column 18 enters the guide channel 4, which is aligned parallel to the inclined column 18, and interacts with it. The slide base body 3 is arranged in a slide guide 10 in the second mold plate of the molding tool, which is opposite the first mold plate 19 (Fig. 6). When the inclined column 18 enters the guide channel 4, the slide base body 3 is displaced along the slide guide 10.The slide head 2 is inserted into the cavity formed between the mold plates of the mold tool along a slide movement direction defined by the slide guide 10 (in Fig. 1 along the + / - x direction). However, the invention is not limited to such a drive element. The drive element can, for example, also comprise a hydraulic actuator that drives the slide body 3 with the slide head 2 along the slide movement direction.

[0039] According to the invention, a wedge plate 5 is arranged between the slide head 2 and the slide body 3. The wedge plate 5 is displaceable along its rising flank and transversely to the direction of slide movement on a wedge plate guide 6. The position of the wedge plate 5 on the wedge plate guide 6 determines a distance between the slide head 2 and the slide body 3 along the direction of slide movement. In the illustrated embodiment, the wedge plate guide 6 is arranged on the slide body 3. However, the invention is not limited to this. The wedge plate guide 6 can, in principle, also be arranged on the slide head 2. The wedge plate 5 is displaceable on the wedge plate guide 6 via an adjusting screw 7. Again, the invention is not limited to this configuration, and other actuating elements are also possible.

[0040] Furthermore, in the illustrated embodiment, the slide head 2, the wedge plate 5, and the slide body 3 are mounted together via a screw connection 8 and preloaded against the screw connection 8 by a spring element 9. The spring element 9 is designed as a disc spring assembly, although the invention is not limited to this. The screw connection 8 and the spring element 9 are not shown in detail in Fig. 1.

[0041] Starting from the illustration in Fig. 1, the spring element 9 and the screw connection 8 create a defined preload that clamps the slide head 2 and the wedge plate 5 to the slide body 3, allowing them to move against the spring element 9 in the + / - x direction. Only the wedge plate 5 can move between the slide head 2 and the slide body 3 in the + / - z direction. The positioning of the wedge plate 5 in the + / - z direction is determined by the wedge plate guide 6 and the position of the adjusting screw 7. Turning the adjusting screw 7 in the + / - z direction causes the wedge plate 5 to move in the same direction. The wedge action of the wedge plate 5 generates a movement of the slide head 2 in the + / - x direction. In short, turning the adjusting screw 7 causes a change in the length of the entire slide assembly 1.Through its interaction with the preload provided by the spring element 9, a higher contact pressure between the slide head 2 and the mold plate can be adjusted with a "longer" slide unit 1, and a lower contact pressure with a "shorter" slide unit 1, when the mold plates (closed molding tool) are in contact with the recesses of the respective mold plate that receive the slide head 2. The adjusting screw 7 thus allows both the immersion depth of the slide head 2 in the cavity and the contact pressure between the slide head 2 and the contours of the recesses in the mold plate that receive the slide head to be adjusted without disassembling the slide unit 1.

[0042] The inclined column 18, which enters the guide channel 4 when the mold plates close, acts as a drive element for the slide movement. Due to the inclined orientation of the column 18, a vertical movement (+ / - z-direction in Fig. 1) of the column 18, in conjunction with the guide channel 4, is converted into a horizontal movement (+ / - x-direction in Fig. 1) of the slide body 3 and thus of the slide head 2. However, the invention is not fundamentally limited to such a drive for the slide unit 1.

[0043] Fig. 2 shows a schematic cross-section of another embodiment of the slide unit 1 according to the invention for a mold for forming an injection-molded or die-cast part with undercuts. Here, too, the slide unit 1 has a slide base body 3 and a slide head 2 arranged thereon. The slide base body 3 with the slide head 2 is slidably arranged by means of a slide guide 10. A drive web 11, inclined relative to the direction of slide movement, is attached to a first mold plate 19 of the at least two mold plates of the mold via a holding device 12. The slide guide 10 is arranged in an opposing, second mold plate of the at least two mold plates of the mold. When the mold plates are moved towards each other, the drive web 11 engages in a guide groove 13 of the slide base body 3, which is aligned parallel to the drive web 11, and interacts with it.In the illustrated embodiment, the drive web 11 and the guide groove 13 are designed such that a vertical movement (+ / - z direction in Fig. 2) of the first form plate 19 with the drive web 11 in conjunction with the guide groove 13 is converted into a horizontal movement (+ / - x direction in Fig. 2) of the slide base body 3 and thus of the slide head 2 along the slide movement direction (+ / - x direction in Fig. 2).

[0044] According to the schematic sectional view shown in Fig. 3, a wedge plate 5 is provided on the slide unit 1 according to the invention. This wedge plate is arranged such that when the drive web 11 engages in the guide groove 13, it lies between a web side 11a of the drive web 11 facing the guide groove 13 and a guide groove side 13a of the guide groove 13 facing this web side 11a. Furthermore, this wedge plate 5 is displaceable along its rising flank and transversely to the direction of slide movement on a wedge plate guide 6. In the illustration of Fig. 3, the wedge plate 5 is therefore displaceable along the direction parallel to the angle of the drive web (on the xz-plane). By positioning the wedge plate 5 along this direction, the positioning of the slide base body 3 and thus of the slide head 2 along the + / - x direction is determined when the forming tool is closed (drive web 11 is immersed in guide groove 13).In one variant, the wedge plate guide 6 is attached to the web side 11a of the drive web 11 facing the guide groove 13. In another variant, the wedge plate guide 6 is attached to the guide groove side 13a of the guide groove 13 facing the web side 11a.

[0045] Fig. 4 shows a further embodiment in a schematic sectional view. Here, the wedge plate 5 is not arranged between the drive web 11 and the guide groove 13, but between the drive web 11 and a side 14a facing the drive web 11 of a drive web receptacle 14 of the holding device 12 of the first mold plate 19. Here, too, the wedge plate 5 is displaceable along its rising flank and transversely to the direction of slide movement on a wedge plate guide 6, such that a position of the wedge plate 5 on the wedge plate guide 6 creates a distance between the drive web 11 and the drive web 12.

[0046] The position of the drive web 11 relative to the holding device 12 of the first mold plate 19 is determined by the wedge plate 5. The drive web 11 is thus adjustable in its position relative to the holding device 12 along the + / - x direction, and therefore along the direction of slide movement. By positioning the drive web 11 on the holding device 12 along the + / - x direction, the positioning of the slide body 3, and thus of the slide head 2, along the + / - x direction is then determined when the mold is closed (drive web 11 is immersed in the guide groove 13).

[0047] Fig. 5 shows a detailed sectional view of the web element of the embodiment according to Fig. 3 in the variant in which the wedge plate guide 6 is attached to the web side 11a of the drive web 11 facing the guide groove 13.

[0048] An adjusting screw 7 is provided for repositioning the wedge plate 5 on the wedge plate guide 6. By turning the adjusting screw 7, the wedge plate 5 is moved along the angle of the drive web 11 in the + / - z and + / - x directions. The adjusting screw 7 is accessible from the outside via a bore 15 in the drive web 11 for adjustment. A retaining screw 16 is also provided for fixing a set position of the wedge plate 5 on the drive web 11. The drive web 11 is attached to the holding device.

[0049] A threaded hole 17 is provided at position 12 (not shown).

[0050] The orientation of the side surfaces of the wedge plate 5, which converge at an acute angle, is selected such that the web side 11a of the drive web 11 facing the guide groove 13 and the guide groove side 13a of the guide groove 13 facing the web side 11a remain parallel to each other even when the wedge plate 5 is moved. This ensures that the effective surface of the web side 11a rests flush against the guide groove side 13a. Fig. 6 shows a sectional view of another embodiment of the slide unit 1 according to the invention for a mold with inclined columns 18. Here, too, the slide base body 3 with the slide head 2 is arranged to be displaceable relative to a slide guide 10 and can be inserted by a drive element into a cavity formed between at least two mold plates of the mold along a slide movement direction defined by the slide guide 10.The drive element is again formed by the inclined column 18, mounted on the first mold plate 19 and inclined relative to the direction of slide movement, engaging in the parallel guide channel 4 of the slide body 3 and cooperating with this guide channel 4. However, the invention is not limited to such a drive element. The drive element can, for example, also comprise a hydraulic actuator that drives the slide body 3 with the slide head 2 along the direction of slide movement. A pressure insert 20 with a surface inclined relative to the direction of slide movement is provided on the first mold plate 19.This inclined surface of the pressure insert 20 engages with a surface of the slide base body 3 parallel to the inclined surface of the pressure insert 20 when the mold plates move towards each other, in order to press the slide base body 3 into a final position when the mold plates are closed. According to the invention, the pressure insert 20 has a wedge plate arrangement 5 consisting of at least two wedge plates 5a, 5b, wherein one side surface of this wedge plate arrangement 5 forms the inclined surface of the pressure insert 20 and a side surface of the wedge plate arrangement 5 opposite this forms abuts a side of the first mold plate 19 facing the wedge plate arrangement 5.By displacing the wedge plate arrangement 5 transversely to the direction of slide movement, the thickness of this wedge plate arrangement 5 can be adjusted along the direction of slide movement, wherein, in the case of closed mold plates, the thickness of this wedge plate arrangement 5 along the direction of slide movement defines a distance between the inclined surface of the slide base body 3 facing the wedge plate arrangement 5 and the side of the first mold plate 19 facing the wedge plate arrangement 5.

[0051] Fig. 7 shows a three-dimensional, partially sectional view of the pressure insert 20 from Fig. 6, designed as a wedge plate arrangement 5. The wedge plate arrangement 5 has two superimposed wedge plates 5a, 5b, which can be positioned relative to each other transversely to the direction of slide movement when the mold plates are open. The relative position of the wedge plates 5a, 5b determines the thickness of the wedge plate arrangement 5 along the direction of slide movement, which in turn allows for an adjustable contact pressure (contact pressure) between the slide contour and the contour of the recesses in the mold plate in the direction of slide movement.

[0052] Furthermore, the overlapping surfaces are designed in a grid pattern. For this purpose, the overlapping surfaces of the wedge plates 5a, 5b are provided with interlocking grooves 23, the grid pattern being defined by the spacing of the grooves 23. However, the invention is not limited to such a design. Likewise, a grid-like design of the overlapping surfaces of the wedge plates is not mandatory.

[0053] For screwing the wedge plate assembly 5 to the first mold plate 19, two through holes 21 with screw head seats are provided for the insertion of screws 22. To allow the two overlapping wedge plates of the wedge plate assembly 5 to be moved relative to each other when the screws 22 are loosened, the through holes 21 in the wedge plate 5a are designed as elongated holes. However, the invention is not limited to such a fastening of the wedge plate assembly 5 to the first mold plate 19.

[0054] Fig. 8 shows a further sectional view of the embodiment of the slide unit 1 according to the invention as shown in Fig. 6, wherein the pressure plate insert 20 is designed as a wedge plate arrangement 5 consisting of two wedge plates 5a, 5b. For this view, the section is taken along one of the two screws 22. It can be seen that the screws 22, which are guided through the through holes 21, are screwed into a threaded hole formed in the first form plate 19. To loosen the screws 22, they are accessible on the side of the pressure insert 20 facing the slide base body 3.

[0055] Fig. 9 shows an alternative embodiment to Fig. 8, also in a sectional view, in which the pressure plate insert 20 is designed as a wedge plate arrangement 5 consisting of two wedge plates 5a, 5b. The screws 22 are each guided through a through hole 24 machined into the first form plate 19 and engage in a thread machined into the wedge plate 5a. Reference numeral list

[0056] Slide unit

[0057] Slider head

[0058] Slide base body

[0059] Guide channel

[0060] Wedge plate, wedge plate arrangement a Wedge plate of wedge plate arrangement 5 b Wedge plate of wedge plate arrangement 5

[0061] Wedge plate guide

[0062] Adjusting screw and adjusting screw head

[0063] screw connection

[0064] Spring element 0 Slide guide 1 Drive web 1a of the guide groove 13 Web side of the drive web facing 112 Holding device 3 Guide groove 3a of the web side 11a Guide groove side of the guide groove 134 Drive web receptacle 4a Side of the drive web receptacle facing 11 145 Bore 6 Retaining screw 7 Threaded hole 8 Inclined column 9 First mold plate 0 Pressure insert 1 Through hole 2 Screws 3 Grooves 4 Through hole in first mold plate 19

Claims

Patent claims 1. Slide unit (1) of a mold for forming an injection-molded or die-cast part with undercuts, wherein the slide unit (1) has a slide base body (3) and a slide head (2) arranged on the slide base body (3), wherein the slide base body (3) with the slide head (2) is arranged to be displaceable relative to a slide guide (10) and the slide base body (3) with the slide head (2) can thus be inserted by a drive element along a slide movement direction specified by the slide guide (10) into a cavity formed between at least two mold plates of the mold, characterized in thatthat a wedge plate (5) is arranged between the slide head (2) and the slide body (3), and that this wedge plate (5) is displaceable along its rising flank and transversely to the direction of slide movement on a wedge plate guide (6), and that a position of the wedge plate (5) on the wedge plate guide (6) defines a distance between the slide head (2) and the slide body (3).

2. Slide unit (1) according to claim 1, characterized in that the Wedge plate guide (6) is arranged on the slide head (2).

3. Slide unit (1) according to claim 1 , characterized in that the Wedge plate guide (6) is arranged on the slide base body (3).

4. Slide unit (1) according to one of the preceding claims, characterized in that the slide head (2), the wedge plate (5) and the slide base body (3) are mounted together via a screw connection (8) and are preloaded against the screw connection (8) via a spring element (9).

5. Slide unit (1) according to claim 4, characterized in that the spring element (9) is a disc spring assembly.

6. Slide unit (1) according to one of the preceding claims, characterized in that the drive element is formed by the fact that at least one inclined column (18) inclined relative to the direction of slide movement is arranged on a first mold plate (19) of the at least two mold plates of the molding tool. and the slide guide (10) is arranged in an opposite, second mold plate of the at least two mold plates of the molding tool, wherein when the mold plates move towards each other the inclined column (18) engages in a guide channel (4) of the slide base body (3) which is aligned parallel to the inclined column (18) and cooperates with this guide channel (4).

7. Slide unit (1) according to one of claims 1 to 5, characterized in that the drive element comprises a hydraulic actuator and this hydraulic actuator drives the slide base body (3) with the slide head (2) along the direction of slide movement.

8. Slide unit (1) of a mold for forming an injection-molded or die-cast part with undercuts, wherein the slide unit (1) comprises a slide base body (3) and a slide head (2) arranged thereon, and wherein the slide base body (3) with the slide head (2) is arranged displaceably relative to a slide guide (10) by a drive element and can be inserted into a cavity formed between at least two mold plates of the mold along a slide movement direction specified by the slide guide (10), and wherein the drive element is formed by a drive web (11) inclined relative to the slide movement direction being arranged on a first mold plate (19) of the at least two mold plates of the mold, and the slide guide (10) being located in an opposite,a second mold plate of the at least two mold plates of the molding tool is arranged and when the mold plates move towards each other, the drive web (11) engages in a guide groove (13) of the slide base body (3) which is aligned parallel to the drive web (11) and interacts with this guide groove (13), characterized in that a wedge plate (5) is arranged between a web side (11a) of the drive web (11) facing the guide groove (13) and a guide groove side (13a) facing this web side (11a) and that this wedge plate (5) is displaceable along its rising flank and transversely to the direction of slide movement on a wedge plate guide (6).

9. Slide unit (1) according to claim 8, characterized in that the wedge plate guide (6) is attached to the web side (11a) of the drive web (11) facing the guide groove (13).

10. Slide unit (1) according to claim 8, characterized in that the wedge plate guide (6) is attached to the guide groove side (13a) of the guide groove (13) facing the web side (11a).

11. Slide unit (1) according to claim 9, characterized in that the orientation of the side surfaces of the wedge plate (5) which converge at an acute angle is selected such that the side surface of the wedge plate (5) facing the guide groove side (13a) and the guide groove side (13a) of the guide groove (13) facing the wedge plate (5) run parallel to each other when the wedge plate (5) is displaced on the wedge plate guide (6).

12. Slide unit (1) according to claim 10, characterized in that the orientation of the side surfaces of the wedge plate (5) which converge at an acute angle is selected such that the side surface of the wedge plate (5) facing the web side (11a) and the web side (11a) of the drive web (11) facing the wedge plate (5) run parallel to each other when the wedge plate (5) is displaced on the wedge plate guide (6).

13. Slide unit (1) of a mold for forming an injection-molded or die-cast part with undercuts, wherein the slide unit (1) comprises a slide base body (3) and a slide head (2) arranged thereon, and wherein the slide base body (3) with the slide head (2) is arranged displaceably relative to a slide guide (10) by a drive element and can be inserted into a cavity formed between at least two mold plates of the mold along a slide movement direction specified by the slide guide (10), and wherein the drive element is formed by a drive web (11) inclined relative to the slide movement direction being arranged in a drive web receptacle (14) of a first mold plate (19) of the at least two mold plates of the mold, and the slide guide (10) being arranged in an opposite,a second mold plate of the at least two mold plates of the molding tool is arranged and when the mold plates move towards each other, the drive web (11) engages in a guide groove (13) of the slide base body (3) which is aligned parallel to the drive web (11) and interacts with this guide groove (13), characterized in that a wedge plate (5) is arranged between the drive web (11) and a side of a drive web receptacle (14) of the first mold plate (19) facing the drive web (11) and that this wedge plate (5), along its rising flank and transversely to the direction of slide movement on a wedge plate guide (6) and that a position of the wedge plate (5) on the wedge plate guide (6) specifies a distance between the drive web (11) and the side of the drive web receptacle (14) of the first mold plate (19) facing the drive web (11).

14. Slide unit (1) according to one of the preceding claims, characterized in that the wedge plate (5) is displaceable via an adjusting screw on the wedge plate guide (6).

15. Slide unit (1) according to one of the preceding claims, characterized in that the wedge plate (5) and wedge plate guide (6) are one and the same component.

16. Slide unit (1) of a mold for forming an injection mold or die-cast part with undercuts, wherein the slide unit (1) has a slide base body (3) and a slide head (2) arranged on the slide base body (3), wherein the slide base body (3) with the slide head (2) is arranged to be displaceable relative to a slide guide (10) and the slide base body (3) with the slide head (2) can thus be inserted by a drive element along a slide movement direction specified by the slide guide (10) into a cavity formed between at least two mold plates of the mold tool and wherein a pressure insert (20) with a surface inclined relative to the slide movement direction is provided on the first mold plate (19) and this inclined surface of the pressure insert (20) when moving the form plates towards each other with a surface parallel to the inclined surface of the pressure insert (20) the slide base body (3) engages in order to press the slide base body (3) into an end position when the mold plates are closed, characterized in that the pressure insert (20) has a wedge plate arrangement (5) and that a side surface of this wedge plate arrangement (5) forms the inclined surface of the pressure insert (20) and a side surface of the wedge plate arrangement (5) opposite this forms a side of the first mold plate (19) facing the wedge plate arrangement (5) and that the thickness of this wedge plate arrangement (5) can be adjusted along the direction of slide movement by displacing the wedge plate arrangement (5) transversely to the direction of slide movement and that, in the case of closed mold plates, the thickness of this wedge plate arrangement (5) along the direction of slide movement specifies a distance between the inclined surface of the wedge plate arrangement (5) of the side of the slide base body (3) facing the side of the first mold plate (19) facing the wedge plate arrangement (5).

17. Slide unit (1) according to claim 16, characterized in that the wedge plate arrangement (5) has at least two wedge plates lying on top of each other and these wedge plates can be positioned relative to each other transversely to the direction of slide movement when the mold plates are open and the thickness of the wedge plate arrangement (5) is determined by their relative position.

18. Slide unit (1) according to claim 17, characterized in that the overlapping surfaces are designed in a grid pattern.

19. Slide unit (1) according to claim 18, characterized in that the overlapping surfaces are grid-shaped by having interlocking grooves (23).

20. Slide unit (1) according to one of claims 16 to 19, characterized in that the drive element is formed by the fact that at least one inclined column (18) is arranged on a first mold plate (19) of the at least two mold plates of the molding tool and the slide guide (10) is arranged in an opposite, second mold plate of the at least two mold plates of the molding tool, wherein, when the mold plates move towards each other, the inclined column (18) engages in a guide channel (4) of the slide base body (3) which is aligned parallel to the inclined column (18) and cooperates with this guide channel (4).

21. Slide unit (1) according to one of claims 16 to 19, characterized in that the drive element comprises a hydraulic actuator and this hydraulic actuator drives the slide base body (3) with the slide head (2) along the direction of slide movement.

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