Die-casting tool and method for assembling a die-casting tool

Abstract

The invention relates to a die-casting tool (1) for producing die-cast parts, comprising a die-casting mold (2), at least one tempering element (3), and deflection plates (4; 4a, 4b), wherein the die-casting mold (2) comprises deflection channel bores (5; 5a, 5b), wherein the deflection plates (4; 4a, 4b) project into the deflection channel bores (5; 5a, 5b), wherein the tempering element (3) comprises a contact surface (6) for connection to the die-casting mold (2), wherein the tempering element (3) comprises blind holes (8; 8a, 8b) which extend from the contact surface (6) into a channel system (9) of the tempering element (3), wherein each of the deflection channel bores (5; 5a, 5b) is aligned with one of the blind holes (8; 8a, 8b) in such a manner is that a longitudinal axis (L5a, L5b) of the respective deflection channel bore (5; 5a, 5b) is aligned congruently with a longitudinal axis (L8a, L8b) of the respective blind hole (8; 8a, 8b), wherein the blind holes (8; 8b) are aligned with the deflection channel bores (5; 5a, 5b).8a, 8b) of the temperature control body (3) one of the deflection plates (4; 4a, 4b) is inserted and wherein the deflection plates (4; 4a, 4b) are each fixed to the temperature control body (3) by means of securing means (14a, 14b) such that deflection plates (4; 4a, 4b) are held in a rotationally secure and longitudinally displaceable manner with respect to their respective longitudinal axis (L4a, L4b).

Description

[0001] The invention relates to a die-casting tool and a method for assembling a die-casting tool according to the preamble of claim 1 or 8.

[0002] From DE 10 2016 000 735 B3, a temperature control system for a die-casting tool is known, with which die-cast parts with irregular contours can be produced and heating or cooling in the die-casting tool can be carried out by means of a temperature control fluid supplied by a peripheral temperature control unit. In a temperature control system mounting plate, at least one irregularly rounded, contour-conforming temperature control channel, defined by the contour of the die-cast parts, is arranged. This channel has a rectangular cross-sectional shape formed as a groove. A continuous, multi-directional flow of temperature control fluid is achieved through the temperature control channel, which has inlet and outlet bores arranged on its channel floor and separately crossing the channel. The channel is sealed to the outside. The temperature control channel is protected by a wider, contour-matched channel cover.with their edges projecting beyond the side walls of the cooling channel, resting in the cooling system mounting plate, covered by the latter and sealed at their contact points by means of gap-filling material along the entire channel length in the cooling system mounting plate, wherein the cooling system mounting plate is arranged, interchangeably inserted, positioned and fixed between a die-cast part mold body and a tool lower body.

[0003] The object of the invention is to propose a die-casting tool or a method for assembling a die-casting tool, which simplifies assembly and disassembly or manufacturing.

[0004] This problem is solved by means of the characterizing features of claim 1 and 8, respectively, starting from the features of the preamble of claim 1 and 8. Advantageous and expedient embodiments are specified in the respective dependent claims.

[0005] The die-casting tool according to the invention for producing die-cast parts comprises a die-casting mold, at least one cooling element, and deflection plates, wherein the die-casting mold comprises deflection channel bores, wherein the deflection plates project into the deflection channel bores, wherein the cooling element comprises a contact surface for connecting the cooling element to the die-casting mold, wherein the cooling element comprises blind holes which are led from the contact surface into a channel system of the cooling element, wherein each of the deflection channel bores is aligned with one of the blind holes such that a longitudinal axis of the respective deflection channel bore is congruent with a longitudinal axis of the respective blind hole, wherein one of the deflection plates is inserted into each of the blind holes of the cooling element aligned with the deflection channel bores, and wherein the deflection plates are each fixed to the cooling element by means of locking devices.that these are held securely against rotation and longitudinal displacement with respect to their respective longitudinal axis. This simplifies the manufacture, assembly, and disassembly of the die-casting tool, as retaining plates and channel cover plates can be dispensed with.

[0006] Furthermore, the locking device can be integrated into the respective deflector plate and / or the temperature control element and / or provided as an accessory. Integrating the locking device into the respective deflector plate and / or the temperature control element eliminates the need for additional components. Providing the locking device as an accessory allows for adaptation between the deflector plate and the temperature control element, enabling, for example, the use of identical deflector plates in temperature control elements with different blind hole diameters.

[0007] It is also possible to form the temperature control element with a first plate and a second plate, wherein the first plate has the contact surface and a first internal parting line parallel to the contact surface, and wherein the second plate has a second internal parting line, and wherein the first and second plates are connected to form the temperature control element such that their first and second internal parting lines face each other. This simplifies the machining of the temperature control element, as its interior is accessible for machining via the first and second internal parting lines due to its two-part design.

[0008] Furthermore, it may be possible to create the blind holes of the temperature control element by means of through holes drilled in the first plate. Since through holes are faster and easier to produce, particularly with regard to drilling progress per unit of time and chip removal, this allows for a more efficient manufacturing process for the temperature control element.

[0009] It may also be provided that the first plate is formed with a first channel system connecting the blind holes, which is open to the first inner dividing surface of the first plate, and that the first channel system is closed off by the opposite second plate, thereby transforming it into the channel system; or it may be provided that the second plate is formed with a first channel system connecting the blind holes, which is open to the second inner dividing surface of the second plate, and that the first channel system is closed off by the opposite first plate, thereby transforming it into the channel system; or it may be provided that the first plate is formed with a first channel system connecting the blind holes, which is open to the first inner dividing surface of the first plate, wherein the second plate comprises a second channel system which is open to the second inner dividing surface of the second plate.and wherein the two channel systems are closed by the opposing plates and are thereby transformed into the channel system, wherein the two channel systems are in particular identical in design. This allows the channel system to be produced by simple milling of the first inner parting surface and / or the second inner parting surface.

[0010] Furthermore, the securing device for the deflector plate may be equipped with at least two slots, in particular opposite slots formed on a wall of the associated blind hole, and with at least wall webs arranged on the deflector plate in a corresponding orientation and number, and / or the securing device for the deflector plate may be equipped with at least one slot formed in the second plate, and with bottom webs arranged on the deflector plate in a corresponding orientation and number. By one or both of these measures, the deflector plate can be held in such a positive and force-fit manner that sufficient resistance to rotation and sufficient resistance to longitudinal displacement is ensured.

[0011] It may be provided that the die-casting tool is equipped with a closure body, wherein the closure body is connected to the die-casting mold in such a way that the cooling element is received in a receiving chamber formed between the die-casting mold and the closure body, and that the cooling element is pressed with the contact surface of its first plate against a counter-contact surface formed in the receiving chamber on the die-casting mold in such a way that the first plate is in liquid-tight contact with the counter-contact surface and that the second plate is in liquid-tight contact with the first plate, wherein it is particularly provided that the cooling element comprises a first seal which is arranged between the first plate and the die-casting mold, or that the cooling element comprises a first seal which is arranged between the first plate and the die-casting mold, and a second seal.which is positioned between the first plate and the second plate. This ensures a liquid-tight connection between the temperature control element and the die-casting mold.

[0012] The inventive method for assembling a die-casting tool, which is designed in particular according to at least one of claims 1 to 7, comprises the following steps: - Adapting a temperature control element to a deflection channel pattern of a die casting mold defined by deflection channel bores by inserting deflection plates into the blind holes of the temperature control element corresponding to the deflection channel pattern; - Inserting the tempering body equipped with the deflection plates into the die-casting mold; - Fixing the temperature control unit to the die-casting mold. This allows for quick assembly and disassembly.

[0013] Furthermore, it may be possible to attach the cooling element to the die-casting mold by means of a closure body that overlaps the cooling element. This eliminates the need for through-holes for fasteners in the cooling element itself, thus preserving the existing seal.

[0014] Further details of the invention are described in the drawing with reference to a schematically illustrated embodiment.

[0015] This shows: Fig. 1: a top view of a first plate of a tempering body of a die-casting tool according to the invention; Fig. 2: a perspective view of the area in the Fig. 1 shown first plate, in which additional deflection plates inserted into the first plate are shown; Fig. 3: a section through the representation of the Fig. 1 corresponding to the section line III-III shown there and Fig. 4: a section through the representation of the Fig. 3 according to the section line IV-IV shown there.

[0016] In the Fig. Figures 1 to 4 show components and sections of a die-casting tool 1 according to the invention. Fig. Figure 3 shows a simplified cross-section through the die-casting tool 1 according to the invention. Fig. Figure 4 shows a cross-section through the representation of the Fig. 3 according to the section line IV-IV shown there. Fig. 1 and Fig. 2 show one in the Fig. 3 and Fig. 4 visible first plate 19 of a tempering body 3 in top view and perspective view, wherein in the perspective view deflecting plates 4 inserted into the first plate 19 are also shown.

[0017] The die-casting tool 1 for producing die-cast parts (not shown) comprises a die-casting mold 2, the tempering body 3, and the deflection plates 4, wherein in the Fig. 3 A first deflection plate 4a and a second deflection plate 4b are shown. The representation of the Fig. Figure 3 is simplified in that the section is interrupted and angled multiple times. The course of the three in the Fig. The three sections shown side by side, IIIa-IIIa, IIIb-IIIb and IIIc-IIIc, are in the Fig. 1 indicated.

[0018] The die-casting mold 2 includes deflection channel bores 5, of which a first deflection channel bore 5a and a second deflection channel bore 5b are shown (see Fig. 3) The deflection plates 4a, 4b protrude into the deflection channel bores 5a, 5b.

[0019] The tempering body 3 includes a contact surface 6 for connecting the tempering body 3 to a counter-contact surface 7 of the die-casting mold 2.

[0020] The temperature control element 3 includes blind holes 8, which extend from the contact surface 6 into a channel system 9 of the temperature control element 3. In the Fig. Of these blind holes 8, a first blind hole 8a and a second blind hole 8b are visible. The channel system 9 comprises a first, long channel 10 with a channel inlet 10a and a channel outlet 10b and a second, short channel 11 with a channel inlet 11a and a channel outlet 11b (see in particular Fig. 2) The channel inlet 10a is connected to a supply line 12, which is formed on the die-casting mold 2. The channel outlet 10b is connected to a disposal line 13, which is also formed on the die-casting mold (see Fig. 3) The second, short channel 11 is supplied in the same way.

[0021] The deflection channel bore 5a is aligned with the blind hole 8a, and the deflection channel bore 5b is aligned with the blind hole 8b. Here, a longitudinal axis L5a of the deflection channel bore 5a coincides with a longitudinal axis L8a of the blind hole 8a. Similarly, a longitudinal axis L5b of the deflection channel bore 5b coincides with a longitudinal axis L8b of the blind hole 8b.

[0022] The deflection plates 4a and 4b are each inserted into the blind holes 8a and 8b of the temperature control unit 3, which are aligned with the deflection channel bores 5a and 5b, respectively. The deflection plates 4a and 4b are each fixed to the temperature control unit 3 by locking means 14a and 14b in such a way that they are held against rotation and longitudinal displacement with respect to their respective longitudinal axes L4a and L4b.

[0023] The securing means 14a are formed on the deflecting plate 4a in the form of opposing wall webs 15, 16 and on the temperature control body 3, namely its blind hole 8a in the form of opposing slots 17, 18 (see Fig. 1, Fig. 2 and Fig. 4) The deflection plate 4b is attached in the same way.

[0024] The tempering body 3 comprises the first plate 19 and a second plate 20. Here, in the Fig. 1 and Fig. 2 only the first plate 19 is shown. In the Fig. 3 and Fig. In 4, both plates 19 and 20 can be seen.

[0025] The first plate 19 has the aforementioned contact surface 6. Parallel to the contact surface 6, the first plate also includes a first inner separating surface 21.

[0026] The second plate comprises a second internal separating surface 22. The first plate 19 and the second plate 20 are connected to the temperature control body 3 such that they face each other with the first internal separating surface 21 and the second internal separating surface 22. Opposite the second internal separating surface 22, the second plate 20 comprises a rear surface 23.

[0027] The blind holes 8a, 8b of the tempering body 3 are formed by through holes 24, 25 formed in the first plate 19.

[0028] The first plate 19 comprises a channel system 26 connecting the blind holes 8, 8a, 8b, which is open to the first inner dividing surface 21 of the first plate 19. The channel system 26 is closed by the plate 20 opposite the first plate 19 and is thus formed as the channel system 9 with the channels 10 and 11.

[0029] According to a second embodiment variant, not shown, it may also be provided to form a channel system in the second plate connecting the blind holes, which is open to the second inner separating surface of the second plate, wherein the channel system is closed by the opposite first plate and is thereby transformed into a channel system.

[0030] According to a third embodiment, not shown, it is also possible to form a first channel system in the first plate, connecting the blind holes and open to the first inner dividing surface of the first plate, and a second channel system in the second plate, open to the second inner dividing surface of the second plate, wherein the two channel systems are closed by the opposing plates and are thereby transformed into a channel system. In this case, it is particularly intended that the two channel systems be congruent.

[0031] As described above, the securing device 14a for the deflecting plate 4a comprises the two slots 17, 18 formed opposite each other on a wall W8a of the associated blind hole 8a, as well as two wall webs 15, 16 arranged on the deflecting plate 4a in corresponding orientation and number.

[0032] Alternatively or additionally, the securing device for the deflecting plate can, according to an embodiment not shown, comprise at least one slot formed on the inner separating surface of the second plate and bottom ribs arranged on the deflecting plate in a corresponding orientation and number.

[0033] Instead of a direct attachment of the tempering element to the die-casting mold (not shown), it is possible – as can be seen in particular from the Fig. As can be seen in Figure 3, it is intended that the die-casting mold 2 be equipped with a closure body 27. The tempering element 3 is received in a receiving space 28 formed between the die-casting mold 2 and the closure body 27.

[0034] The temperature control body 3 is pressed liquid-tight against the counter-contact surface 7 by the closure body 28 with the contact surface 6 of its first plate 19 and with the second inner separating surface 22 of its second plate 20 pressed liquid-tight against the first inner separating surface 21 of its first plate.

[0035] According to one embodiment (not shown), a seal may be arranged between the die-casting mold and the first plate, and / or between the first and second plates. In this case, the respective seal is provided with the necessary recesses.

[0036] The die-casting mold can be designed in such a way that it comprises a first mold half and a second mold half, so that by pulling the two mold halves apart, the die-cast parts (not shown) are demolded.

[0037] In the inventive method for assembling the die-casting tool 1, which can be designed as described above, it is provided that: In a first step, a cooling element 3 is adapted to a deflection channel pattern B5 of the die casting mold 2 defined by deflection channel bores 5 or 5a, 5b by inserting deflection plates 4 or 4a, 4b into the blind holes 8 or 8a, 8b of the cooling element 3 corresponding to the deflection channel pattern B5.

[0038] In a second step, the tempering body 3, equipped with deflection plates 4 or 4a, 4b, is to be inserted into the die casting mold 2.

[0039] In a third step, attach the tempering body 3 to the die-casting mold 2.

[0040] The third step can be carried out by attaching the tempering body 3 to the die-casting mold 2 by means of a closure body 27 that overlaps the tempering body 3.

[0041] During the production of die-cast parts and / or before the production of die-cast parts and / or after the production of die-cast parts, a temperature control medium (not shown) flows through the first, long channel 10. This medium is supplied to the channel from the supply line 12 via the channel inlet 10a, then flows through the second deflection channel bore 5b, and is guided through the second deflection channel plate 4b into the second deflection channel bore 5b and out of the second deflection channel bore 5, in order to flow back into the first, long channel 10 and similarly into the first deflection channel bore 5a and all further deflection channel bores (see also Fig. 1 and Fig. 2) is directed to then flow through the channel outlet 10b of the first, long channel 10 via the disposal line 13 and to be cooled or heated in a circulation device not shown, in order to flow back in the cycle via the supply line.

[0042] Ten deflection plates 4 are arranged in the first, long channel 10. Three deflection plates 4 are arranged in the second, short channel 11. Reference symbol list 1 die-casting tool 2 die casting mold 3 temperature control units 4 deflection plates 4a first deflection plate 4b second deflection plate 5 Deflection channel bore 5a first diversion channel bore 5b second deflection channel bore 6 contact area of ​​3 7 counter-contact area of ​​2 8 blind holes of 3 8a first blind hole 8b second blind hole 9 canal system of 3 10 first, long channel of 9 10a Channel inlet from 10 10b Channel outlet of 10 11 second, short channel of 9 11a Canal inlet from 11 11b Channel outlet of 11 12 supply lines for 10 in 2 13 Disposal line for 10 in 2 14a Security devices for 4a 14b Security equipment for 4b 15, 16 Wall bridge from 4a 17, 18 slot of 8a 19 first record of 3 20 second record of 3 21 first internal separation surface at 19 22 second inner separating surface at 20 23 rear surface at 20 24, 25 through hole in 19 26 open channel system from 19 to 21 27 locking bodies 28 Recording space formed by 2 and 27 B5 Deflection channel diagram L4a Longitudinal axis of 4a L4b Longitudinal axis of 4b L5a Longitudinal axis of 5a L5b Longitudinal axis of 5b L8a Longitudinal axis of 8a L8b Longitudinal axis of 8b W8a Wall of 8a

Claims

[1] Die-casting tool (1) for the production of die-cast parts comprising - a die-casting mold (2), - at least one temperature control element (3) and - Deflection plates (4; 4a, 4b), - wherein the die-casting mold (2) comprises deflection channel bores (5; 5a, 5b), - wherein the deflection plates (4; 4a, 4b) project into the deflection channel bores (5; 5a, 5b), - wherein the tempering body (3) comprises a contact surface (6) for connection to the die-casting mold (2), - wherein the temperature control body (3) comprises blind holes (8; 8a, 8b) which extend from the contact surface (6) into a channel system (9) of the temperature control body (3), characterized by , - that each of the deflection channel bores (5; 5a, 5b) is aligned with one of the blind holes (8; 8a, 8b) such that a longitudinal axis (L5a, L5b) of the respective deflection channel bore (5; 5a, 5b) is aligned congruently with a longitudinal axis (L8a, L8b) of the respective blind hole (8; 8a, 8b), - that one of the deflection plates (4; 4a, 4b) is inserted into each of the blind holes (8; 8a, 8b) of the temperature control body (3) which are aligned with the deflection channel bores (5; 5a, 5b), - that the deflection plates (4; 4a, 4b) are each fixed to the temperature control body (3) by means of securing means (14a, 14b) such that the deflection plates (4; 4a, 4b) are held in a rotationally secure and longitudinally displaceable manner with respect to their respective longitudinal axis (L4a, L4b). [2] Die casting tool according to claim 1, characterized by , that the securing means (14a, 14b) are designed on the respective deflecting plate (4; 4a, 4b) and / or on the temperature control body (3) and / or as accessories. [3] Die casting tool according to at least one of the preceding claims, characterized by , - that the tempering body (3) comprises a first plate (19) and a second plate (20), - wherein the first plate (19) has the contact surface (6) and has a first internal separating surface (21) parallel to the contact surface (6) and - wherein the second plate (20) has a second internal partition surface (22) and - wherein the first plate (19) and the second plate (20) are connected to the tempering body (3) such that they are opposite each other with the first internal separating surface (21) and the second internal separating surface (22). [4] Die casting tool according to at least one of the preceding claims, characterized by , that the blind holes (8; 8a, 8b) of the tempering body (3) are formed by through holes (24, 25) formed in the first plate (19). [5] Die-casting tool according to claim 3 or 4, characterized by , - that the first (19) plate comprises a first channel system (26) connecting the blind holes (8; 8a, 8b), which is open to the first inner dividing surface (21) of the first plate (19), and the first channel system (26) is closed by the opposite second plate (20) and is thereby transformed into the channel system (9) or - that the second plate comprises a first channel system connecting the blind holes, which is open to the second inner dividing surface of the second plate, and the first channel system is closed by the opposite first plate and is thereby transformed into the channel system or - that the first plate comprises a first channel system connecting the blind holes, which is open to the first inner dividing surface of the first plate, that the second plate comprises a second channel system, which is open to the second inner dividing surface of the second plate, and that the two channel systems are closed by the opposing plates and are thereby transformed into the channel system, wherein the two channel systems are in particular identical. [6] Die casting tool according to at least one of the preceding claims, characterized by , - that the securing means (14a, 14b) for the deflecting plate (5; 5a, 5b) comprises at least two slots (17, 18) formed, in particular opposite each other, on a wall (W8a) of the associated blind hole (8a), as well as wall webs (15, 16) arranged on the deflecting plate (5; 5a, 5b) in a corresponding orientation and number and / or - that the securing device for the deflecting plate comprises at least one slot formed in the second plate and bottom ribs arranged on the deflecting plate in a corresponding orientation and number. [7] Die casting tool according to at least one of the preceding claims, characterized by , - that the die-casting mold (2) includes a closure body (27), - wherein the closure body (27) is connected to the die-casting mold (2) in such a way, - that the tempering element (3) is received in a receiving space (28) formed between the die-casting mold (2) and the closure body (27) and - that the tempering body (3) with the contact surface (6) of its first plate (19) is pressed against a counter-contact surface (7) formed in the receiving chamber (28) on the die-casting mold (2) in such a way that the first plate (19) is liquid-tight against the counter-contact surface (7) and that the second plate (20) is liquid-tight against the first plate (19), - which is specifically intended to ◯ that the tempering body (3) comprises a first seal which is arranged between the first plate (19) and the die-casting mold (3), or ◯ that the tempering body (3) comprises a first seal which is arranged between the first plate (19) and the die-casting mold (3), and a second seal which is arranged between the first plate (19) and the second plate (20). [8] Method for assembling a die-casting tool (1), which is designed in particular according to at least one of claims 1 to 7, comprising the steps: - Adapting a temperature control body (3) to a deflection channel pattern (B5) of a die casting mold (2) defined by deflection channel bores (5; 5a, 5b) by inserting deflection plates (4; 4a, 4b) into the blind holes (8; 8a, 8b) of the temperature control body (3) corresponding to the deflection channel pattern (B5); - Inserting the tempering body (3) equipped with the deflection plates (4; 4a; 4b) into the die casting mold (2); - Fixing the tempering body (3) to the die-casting mold (2). [9] Method according to claim 8, characterized by , that the tempering body (3) is attached to the die-casting mold (2) by means of a closure body (27) that overlaps the tempering body (3).

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