CN216732727U - Forming die and joint - Google Patents
Forming die and joint Download PDFInfo
- Publication number
- CN216732727U CN216732727U CN202022715474.8U CN202022715474U CN216732727U CN 216732727 U CN216732727 U CN 216732727U CN 202022715474 U CN202022715474 U CN 202022715474U CN 216732727 U CN216732727 U CN 216732727U
- Authority
- CN
- China
- Prior art keywords
- face
- side wall
- molding
- preparation
- joint
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
Abstract
The utility model relates to a molding tool for injection molding of plastic for a joint part, in particular for injection molding of a spherical receptacle of a spherical joint in a joint housing, which has a first housing side wall and a second housing side wall, comprising a first molding body with a first molding end face and a first side wall adjoining the first molding end face, and a second molding body with a second molding end face and a first side wall adjoining the second molding end face, wherein the first molding body and the second molding body enclose a molding cavity for filling with plastic when the molding tool is closed, and wherein the first side wall of the first molding body contacts the molding end face of the second molding body in a first overlap region when the molding tool is closed.
Description
Technical Field
The utility model relates to a forming die for plastic injection molding of a joint piece, in particular a spherical seat of a spherical joint.
Background
Injection molding methods are known from practice, in particular for producing plastic parts. By means of this method, readily available molded parts can be produced in large numbers at a low cost. The injection molding device used for this purpose comprises, in addition to a plasticizing unit for liquefying and injecting the plastic, a molding tool which comprises at least two molded bodies which are connected to one another by a closing unit, so that, in the closed state of the molding tool, a cavity is formed between the two molded bodies, into which cavity the plastic liquefied by means of the plasticizing unit is injected. The cavity has a shaping surface which conforms to the outer contour of the molded part to be produced. After the plastic has hardened, the molding tool is opened and the finished molded part is removed.
Document WO 97/41361 a1 shows a forming tool for the plastic injection molding of spherical seats (or bearing bushes). The molding tool comprises a first hollow cylindrical molded body having a molding end face and a first side wall adjoining the end face, and a second molded body having an end face and a first side wall adjoining the end face. The first hollow cylindrical molded body closes the first opening of the spherical joint housing such that the first side wall of the first molded body contacts the tip side inner side of the housing side wall of the spherical joint housing. The first hollow cylindrical shaped body accommodates a shank of a ball pin having a ball head in its interior, wherein the ball head enters a cavity enclosed by the ball joint housing. A second molded part is arranged at a second opening, which is opposite the first opening of the ball joint housing, wherein an injection channel runs through the second molded part, so that liquid plastic can be fed into a molded cavity which is present between the ball head and the inner wall of the ball joint housing and has the contour of the bearing sleeve to be produced. Disadvantageously, the bearing bush has a sharp edge after demolding (in particular in the region of the gate). This disadvantageously results in reduced stability of the bearing sleeve (or spherical seat) and increased material costs (or scrap in manufacturing).
SUMMERY OF THE UTILITY MODEL
The object of the present invention is to provide a molding tool which is compact and which makes possible a cost-effective production of the ball socket, in particular of the ball joint, in the joint housing.
The object is achieved according to the utility model by a forming tool.
According to a first aspect of the utility model, a molding die is realized for plastic injection molding of a joint piece, in particular for plastic injection molding of a spherical socket of a spherical joint in a joint housing, the joint housing comprising a first housing side wall and a second housing side wall, the molding die comprising: the first forming body comprises a first forming end surface and a first side wall adjacent to the first forming end surface. The molding tool according to the utility model furthermore comprises a second molded part which comprises a second molded end face and a first side wall adjoining the second molded end face. In this case, the first molded part and the second molded part enclose a molding cavity for filling with plastic material in the case of a closed molding tool. The molding tool according to the utility model is characterized in that, with the molding tool closed, the first side wall of the first molded part contacts the molding end face of the second molded part in the first overlap region. Advantageously, the spherical seat of the spherical joint can thus be produced in an independent manner in the joint housing by means of only two shaped bodies, wherein the two shaped bodies enclose the shaped cavity. In this case, the overlap region formed between the first and second molded bodies replaces the third molded body, which would otherwise be required for forming the molding cavity. Advantageously, this results in a more compact design of the molding tool, and reduces the number of components required for the application. Furthermore, sharp edges in the mold are advantageously avoided, which advantageously significantly reduces maintenance costs.
In a preferred embodiment of the forming tool, it is provided that the first overlap region is arranged between the first housing side wall and the forming cavity. Particularly preferably, the first and second molded parts, in the case of a closed molding tool, space the molding cavity from the first housing side wall and from the second housing side wall. Advantageously, the overlap region (or the first and second shaped body) is thereby used for: the free-standing spherical seat can be manufactured in an injection molding process. A free-standing spherical seat is to be understood here as a spherical seat: the spherical seat does not contact a portion of the joint housing at least in a lateral direction.
In an advantageous development, that end section of the first side wall of the first molded body which faces the molding cavity is arranged in the first overlap region. In this way, a surface contact between the first and second molded parts in the overlapping region is advantageously ensured, so that a sufficient sealing of the molding cavity with respect to the remainder of the joint housing is ensured during the filling of the plastic.
In a preferred embodiment, the first shaped end face of the first shaped body has a central region which is partially spherical. Advantageously, such a partially spherical central region describes a ball head of the ball pin which can then be mounted in an articulated manner in the spherical seat, so that this ball head can then be mounted in an articulated manner in the spherical seat produced in a precisely and reliably manner.
In a preferred refinement, the first profiled end face of the first profile has a flange region arranged concentrically about the longitudinal axis of the first profile. Particularly preferably, the flange region radially surrounds a partially spherical central region of the shaped end face. Advantageously, the flange region represents the end face of the spherical seat, wherein the end face of the spherical seat has no sharp-edged notches and is therefore easy to maintain, and the spherical seat as a whole has a higher stability.
Particularly preferably, the flange region adjoins the overlap region. In this way, advantageously, a region with less sharp edges is formed between the rear side of the spherical seat and the end side of the spherical seat. In particular if a third molded body is used, this region is usually formed with relatively sharp edges, which reduces the stability of the spherical seat and increases the maintenance strength.
In a preferred embodiment, the second profiled end face of the second profile has a cross-sectional shape that is concave inward. Particularly preferably, the second shaped end face of the second shaped body has a profile which is W-shaped in cross section. Advantageously, the rear side of the spherical seat to be produced, which is substantially shaped by the second shaped end face, is configured in a stable and fixed manner for safely and reliably absorbing the forces occurring when the ball pin is inserted to form the ball joint.
Suitably, the first side wall of the first shaped body has a first step, wherein the first step forms the first stop surface. The first stop surface preferably rests on the front side of the first housing side wall with the molding tool closed. Preferably, the second side wall of the first molded body has a second step, wherein the second step forms a second stop surface. The second stop face preferably rests on the front side of the second housing side wall with the molding tool closed. Advantageously, the position of the first molded body relative to the joint housing is determined by a stop surface of the first molded body.
Preferably, the first side wall of the second molded body has a first step, wherein the first step forms a first stop surface. The first stop surface of the second molded part preferably rests on the rear side of the first housing side wall when the molding tool is closed. Furthermore, it is preferred that the second side wall of the second molded body has a second step, wherein the second step forms a second stop surface. The second stop surface of the second molded part preferably rests against the rear side of the second housing side wall when the molding tool is closed. The position of the second molded part relative to the joint housing is advantageously determined by a stop surface of the second molded part.
Both the first and the second molded part have a corresponding stop surface, which enables the forming cavity to be formed reliably and simply between the first and the second molded part by closing the molding tool. Since the overlap region formed between the first and second molded parts is sufficiently large, the length tolerances of these molded parts are advantageously compensated for or no connection is produced between the molded cavity and the remainder of the joint housing (in particular the housing side wall). The overlap region advantageously forms a sealing surface between the housing side wall and the shaped cavity.
Particularly advantageously, when the molding tool is closed, the inner side of the first housing side wall is covered in portions (anteilig) completely by a portion of the first side wall of the first molded part and a portion of the first side wall of the second molded part. Advantageously, the first and second molded parts thereby space the housing side wall from the molding cavity.
According to a further aspect of the utility model, a use of a molding tool for producing a joint part by means of a plastic injection molding method (in particular for producing a ball socket of a ball joint in a joint housing having a first housing side wall and a second housing side wall by means of a plastic injection molding method) is proposed, wherein the molding tool is configured as described above. Advantageously, the production costs can thereby be greatly reduced (in particular in the production of free-standing spherical seats in the joint housing), since the moulding tool is of more compact design and comprises a smaller number of moulded bodies.
Another aspect of the present invention provides a socket including: a joint face; a rear side facing away from the joint face; and an end face which separates the joint face and the rear side at least in sections, wherein such a joint part can be obtained by plastic injection molding in a molding die as described above. Advantageously, the end face of the connecting piece has at most one inner edge.
Further advantages, improvements and features of the utility model result from the following description of preferred embodiments.
Drawings
The utility model will be further elucidated according to a preferred embodiment of the utility model with reference to the drawings, in which:
fig. 1 shows a preferred embodiment of a forming die according to the utility model in a perspective view cut in the longitudinal direction;
fig. 2 shows a perspective view of a ball joint with a ball socket in the joint housing, which ball socket is produced by means of the molding tool 1 according to the utility model from fig. 1.
Detailed Description
Fig. 1 shows a preferred embodiment of a forming die according to the utility model in a perspective view cut in the longitudinal direction. The molding die 1 comprises a first molded body 2, which first molded body 2 forms a first half for the manufacture of a molded part (here a spherical seat). The first molded body 2 has a first molded end face 3. The first, shaped end face 3 of the first shaped body 2 has for the most part the shape of a partial sphere 3a, which partial sphere 3a conforms to the shape of a ball head to be subsequently inserted into a spherical seat to be produced. Thereby, it is advantageously ensured that: the ball head is then precisely enclosed by the spherical seat in a fitting manner and is securely held therein. In addition to the partially spherical central region 3a, the end face 3 also comprises an annular flange region 3b which radially surrounds the partially spherical central region 3a about the longitudinal axis L of the first molded body 2. This annular flange region 3b serves for shaping the end side of the spherical seat to be produced by the injection molding method.
The first molded body 2 further includes: a first side wall 4 adjoining the first formed end face 3; a second side wall 5 opposed to the first side wall 4; and a rear wall 6. The first side wall 4 and the second side wall 5 each have a step 4a, 5a, and these steps 4a, 5a form a respective stop surface 4b, 5 b.
These stop surfaces 4b, 5b rest against a rear side 31a, 32a of the first housing side wall 31 and the second housing side wall 32 of the joint housing 30, respectively, in the closed state of the molding tool 1. This advantageously defines the position of the first molded body 2 relative to the previously manufactured joint housing 30.
The forming tool 1 further comprises a second shaped body 7, which second shaped body 7 forms a second half-mould for the manufacture of a spherical seat. The second molded body 7 has a second molded end face 8. The second shaped end face 8 of the second shaped body 7 has a shape in cross-section of a W that conforms to the shape of the rear side of the spherical seat to be produced by the injection molding method.
Further, the second molded body 7 includes: a first side wall 9; a second side wall 10 opposite to the first side wall 9; and a rear wall 11. The first side wall 9 and the second side wall 10 of the second molded body 7 each have a step 9a, 10a, and these steps 9a, 10a form a respective stop surface 9b, 10 b.
These stop surfaces 9b, 10b rest on a front side 31b, 32b of the first housing side wall 31 and the second housing side wall 32 of the joint housing 30, respectively, in the closed state of the molding tool 1. This advantageously defines the position of the second molded part 7 relative to the joint housing 30.
Through the defined position of the first molded body 2 (or of the second molded body 7), a molding cavity 12 is arranged between the first molding end face 3 of the first molded body 2 and the second molding end face 8 of the second molded body 7, which molding cavity 12 has the shape of a spherical seat to be produced. Advantageously, the cavity 12 is only surrounded by the end faces 3, 8 of the first or second molded body 2, 7, so that no third molded body is required for forming the cavity 12. The molding tool 1 thus has fewer components and is compact.
Only two shaped bodies are required, which is achieved in that: the first side wall 4 of the first molded part 2 contacts the end wall 8 of the second molded part 7 in a first overlap region 13a, so that the overlap region 13a separates the molded cavity 12 of the joint housing 30 from these side walls 31, 32 in a sealing manner. In this case, that end section 4c of the first side wall 4 of the first molded body 2 which faces the molding cavity 12 is arranged in the first overlap region 13 a.
A second overlapping area 13b is formed in the second side wall 5 opposite to the first side wall 4. In this case, that end section 5c of the second side wall 5 of the first molded body 2 which faces the molding cavity 12 is arranged in the second overlap region 13 b.
In particular, a free-standing spherical seat within the joint housing 30 can thereby be produced by means of a molding die having only two molded bodies. Advantageously, the end face of the spherical seat no longer has a notch, that is: the spherical seat has fewer seams, a larger cross-section and a smaller notching effect. In particular, injection processes without sprues (angussos) can thereby be achieved, so that material savings of about 20% are achieved with less scrap (or no scrap at all).
Fig. 2 shows a ball joint 50 with a ball socket 51 in the joint housing 30, which socket is produced by means of the molding tool 1 according to the utility model from fig. 1. The ball joint 50 is formed by a ball socket 51 and a ball head 52, which is mounted in the ball socket 51 in an articulated manner by a ball pin 53. Here, the spherical seat 51 is framed (umrahmt) by the first and second side walls 31 and 32 of the joint housing 30, however, the first and second side walls 31 and 32 of the joint housing 30 do not contact the spherical seat 51.
The first side wall 31 has an inner side 31c facing the spherical seat 51 and the second side wall 32 has an inner side 32c facing the spherical seat 51, wherein both the inner side 31c of the first side wall 31 and the inner side 32c of the second side wall 32 are spaced from the spherical seat 51.
Depending on the shape of the end face 3 of the first molded part 2 (or of the end face 8 of the second molded part 7) used, the spherical seat 51 has a joint face 51a which corresponds to the shape of the ball head 52 and a rear side 51b which has a W-shaped cross section. The joint surface 51a is separated from the rear side 51b by an end side 51 c.
Compared to the free-standing spherical seats produced by the prior art by means of plastic injection molding methods, the spherical seat 51 produced by means of the inventive molding tool 1 has fewer seams, a larger cross section and a smaller notch effect, in particular in the region of the end face 51c, since the inventive molding tool 1 has fewer sharp edges in the region of the end face 51 c. In the ball joint (50) shown in fig. 2, the end face has an inner edge (51 d).
The utility model has been explained above according to an embodiment in which the second, shaped end face of the second shaped body has a profile with a W-shaped cross section. It goes without saying that the second shaped end face of the second shaped body can be of a generally spherical shape, i.e. as a part of a sphere or the like.
Claims (13)
1. A forming mold (1) for plastic injection molding of a joint piece, in particular for a ball socket of a ball joint in a joint housing (30) having a first housing side wall (31) and a second housing side wall (32), comprising:
-a first profiled body (2) having a first profiled end face (3) and a first side wall (4) adjoining the first profiled end face; and
-a second shaped body (7) having a second shaped end face (8) and a first side wall (9) adjoining the second shaped end face;
wherein the first molded part (2) and the second molded part (7) enclose a molding cavity (12) for filling with plastic when the molding tool (1) is closed,
it is characterized in that the preparation method is characterized in that,
with the molding tool (1) closed, the first side wall (4) of the first molded part (2) contacts the second molding end face (8) of the second molded part (7) in a first overlap region (13 a).
2. The shaping mold (1) according to claim 1,
it is characterized in that the preparation method is characterized in that,
the first overlap region (13a) is arranged between the first housing side wall (31) and the shaped cavity (12).
3. Forming die (1) according to claim 1,
it is characterized in that the preparation method is characterized in that,
the first and second molded bodies (2, 7) space the molding cavity (12) from the first and second housing side walls (31, 32) when the molding die (1) is closed.
4. The shaping mold (1) according to claim 1,
it is characterized in that the preparation method is characterized in that,
an end section (4c) of a first side wall (4) of the first molded body (2) facing the molding cavity (12) is arranged in the first overlap region (13 a).
5. The shaping mold (1) according to claim 1,
it is characterized in that the preparation method is characterized in that,
the first forming end face (3) of the first formed body (2) has a central region (3a) which is partially spherical.
6. The shaping mold (1) according to claim 5,
it is characterized in that the preparation method is characterized in that,
the first profiled end face (3) of the first profile (2) has a flange region (3b) arranged concentrically about the longitudinal axis (L) of the first profile (2).
7. The shaping mold (1) according to claim 6,
it is characterized in that the preparation method is characterized in that,
the flange region (3b) surrounds a partially spherical central region (3a) of the profiled end face (3) in the radial direction.
8. The shaping mold (1) according to claim 6,
it is characterized in that the preparation method is characterized in that,
the flange region (3b) adjoins the first overlap region (13 a).
9. Forming die (1) according to claim 1,
it is characterized in that the preparation method is characterized in that,
the second end face (8) of the second molded body (7) has a cross-section in the shape of an inwardly concave arch.
10. The shaping mold (1) according to claim 9,
it is characterized in that the preparation method is characterized in that,
the second end face (8) of the second molded body (7) has a W-shaped cross-sectional profile.
11. The shaping mold (1) according to claim 1,
it is characterized in that the preparation method is characterized in that,
with the molding tool closed, the inner side (31c) of the first housing side wall (31) is covered in portions by a portion of the first side wall (4) of the first molded part (2) and by a portion of the first side wall (9) of the second molded part (7).
12. A fitting, comprising:
-a joint face (51 a);
-a rear side (51b) facing away from the joint face (51 a);
characterized in that the joint part has an end face (51c) which separates the joint surface (51a) from the rear side at least in sections,
the socket is obtainable by plastic injection moulding in a moulding mould (1) according to one of claims 1 to 11.
13. The socket according to claim 12, wherein the socket is a socket,
it is characterized in that the preparation method is characterized in that,
at least the end face (51c) has at most one inner edge (51 d).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE202019106462.5 | 2019-11-20 | ||
| DE202019106462.5U DE202019106462U1 (en) | 2019-11-20 | 2019-11-20 | mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216732727U true CN216732727U (en) | 2022-06-14 |
Family
ID=68944115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022715474.8U Active CN216732727U (en) | 2019-11-20 | 2020-11-20 | Forming die and joint |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN216732727U (en) |
| DE (1) | DE202019106462U1 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997041361A1 (en) | 1996-04-26 | 1997-11-06 | Sachsenring Automobiltechnik Gmbh | Ball-and-socket joint |
-
2019
- 2019-11-20 DE DE202019106462.5U patent/DE202019106462U1/en active Active
-
2020
- 2020-11-20 CN CN202022715474.8U patent/CN216732727U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| DE202019106462U1 (en) | 2019-11-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7150845B1 (en) | Mould with turnable middle section | |
| US5298215A (en) | Method for injection molding objects of at least two parts | |
| KR960037244A (en) | Manufacturing method of bearing shell for ball joint and ball joint | |
| JP4624332B2 (en) | Manufacturing method of ball joint member | |
| KR100293247B1 (en) | Joint Housing Manufacturing Method | |
| US20170297240A1 (en) | Foam body and apparatus and method of making the body | |
| US4806091A (en) | Apparatus for manufacturing a plastic hollow body with a blow-molded body part | |
| CN103228422B (en) | A kind of prefabricated component and for making the mold stack of prefabricated component | |
| CN216732727U (en) | Forming die and joint | |
| JP2008519945A (en) | Method for producing an elastomer bearing, sleeve bearing produced thereby and apparatus for producing the same | |
| KR102179306B1 (en) | Dual injection molding mold for vehicle interior materials and Molding method of vehicle interior materials using dual injection molding mold | |
| US5702660A (en) | Process for in situ molding of a bearing material in a ball and socket joint assembly | |
| CN104812549A (en) | Method for producing hollow body from thermoplastic material | |
| JP2008073885A (en) | Cylindrical cored molded product and its manufacturing method | |
| CN212764568U (en) | Vulcanization mold for molding large square wire rubber waterproof piece | |
| JP3012914B2 (en) | Hollow product made of synthetic resin by injection molding method and method for producing the same | |
| JPH058286A (en) | Manufacture of resin hose | |
| CN202540721U (en) | Oil seal mold | |
| CN219133110U (en) | Injection mold and injection product | |
| CN212331688U (en) | Thick wall automobile door handle injection mold based on gas-assisted molding technology | |
| KR100503775B1 (en) | Forming method of push rod for switch | |
| CN109496169B (en) | Internal high-pressure forming die and method for forming workpiece by internal high-pressure forming | |
| CN215039658U (en) | Rubber coating injection mold for plastic folding washbasin for children | |
| JPH07276382A (en) | Mold for molded piece with cylindrical core | |
| JP5688846B2 (en) | Method for producing foamed resin molded product |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |