Positioning device for forming core rod

Abstract

The utility model relates to the technical field of forming processing, and discloses a positioning device for a forming core rod, a positioning mechanism is used for mounting and supporting a workpiece forming core rod, and the positioning mechanism comprises a driving cylinder, a core rod connecting block, a rear end positioning block, a forming pedestal and a front end guide seat, the core rod connecting block arranged at the push rod end of the driving air cylinder is used for being connected with the workpiece forming core rod in an embedded mode through notch embedding, the driving air cylinder and the workpiece forming core rod are in flexible connection, after installation, the workpiece forming core rod and the driving air cylinder have a certain adjustment amount, and the driving air cylinder only provides driving force for front-back movement in the working process; the front-end guide seat and the rear-end positioning block are respectively arranged at the front end and the rear end of the workpiece forming core rod, so that the workpiece forming core rod is ensured not to deflect through supporting and guiding of the front-end guide seat and the rear-end positioning block, the later-stage adjustment is relatively convenient even if deflection occurs, and the working reliability of the workpiece forming core rod is greatly improved; and the forming quality of a product workpiece is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of molding processing, in particular to a positioning device for a molding core rod. Background Art

[0002] Stamping refers to a processing method in which a press and a die are used to apply external force to plates, strips, tubes and profiles to cause plastic deformation or separation, thereby obtaining a workpiece (stamping part) of the desired shape and size. In order to make the product reach the desired shape and size after stamping, a mandrel needs to be inserted into the center of the product when the product is bent and formed. The internal support of the mandrel is combined with the external clamping of the clamp to achieve the forming control of the product shape and size.

[0003] The mandrel is installed inside the forming mold through a positioning device. The existing mandrel mostly adopts an integrated installation structure, that is, the cylinder is directly connected to the mandrel, and the cylinder and the mandrel are fixedly rigidly connected. Since the mandrel has a long stroke and the end side of the mandrel cannot be effectively guided and supported during movement, the mandrel is prone to deflection after being extended, resulting in changes in the shape and size of the product, which cannot meet the requirements of the drawing and is difficult to adjust. Therefore, a positioning device for a forming mandrel is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a positioning device for a forming mandrel to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a positioning device for a forming mandrel, comprising a positioning mechanism installed inside a forming mold, wherein a workpiece forming mandrel is arranged inside the forming mold, and the positioning mechanism is used for installation support of the workpiece forming mandrel;

[0006] The positioning mechanism includes a driving cylinder, a core rod connecting block, a rear end positioning block, a forming platform and a front end guide seat. The workpiece forming core rod is mounted on the push rod end of the driving cylinder through the core rod connecting block. The front end guide seat is supported on the front end side of the workpiece forming core rod. The rear end positioning block is arranged at the rear part of the forming platform. The rear end of the workpiece forming core rod is provided with a V-shaped positioning groove.

[0007] Preferably, the forming pedestal is fixedly mounted on the upper portion of the lower die base of the forming mold by bolts, a cylinder bracket is fixedly mounted on the front side of the forming pedestal, and the driving cylinder is fixedly mounted on the upper portion of the cylinder bracket.

[0008] Preferably, the core rod connecting block is fixedly mounted on the push rod end of the driving cylinder, a V-shaped protrusion is provided at the rear of the core rod connecting block, a V-shaped connecting groove is provided at the front end of the workpiece forming core rod, and the V-shaped protrusion is movably engaged in the inner side of the V-shaped connecting groove.

[0009] Preferably, the front end guide seat is fixedly mounted on the front part of the forming platform by bolts, two of the front end guide seats form a group, and the front end guide seats are respectively mounted on the front end sides of the workpiece forming core rod.

[0010] Preferably, T-shaped protrusions are fixed on both sides of the workpiece forming core rod, a T-shaped guide groove is provided on the side of the front end guide seat, and the T-shaped protrusion is slidably engaged with the inner side of the T-shaped guide groove.

[0011] Preferably, the rear end positioning block is fixedly installed at the rear of the forming platform, the rear end positioning block is opposite to the rear end of the workpiece forming core rod, the V-shaped positioning groove is opened in the middle of the rear end of the workpiece forming core rod, and a V-shaped positioning block is arranged in front of the rear end positioning block, and the V-shaped positioning block is adapted to the V-shaped positioning groove.

[0012] Preferably, a product workpiece is installed on the upper part of the above-mentioned forming platform, and the workpiece forming core rod is supported inside the product workpiece during processing.

[0013] Compared with the prior art, the utility model adopts the above technical solution and has the following technical effects:

[0014] The device utilizes a core rod connecting block arranged at the push rod end of the driving cylinder to engage the workpiece forming core rod through a groove engagement. The driving cylinder and the workpiece forming core rod are softly connected. After installation, the workpiece forming core rod and the driving cylinder have a certain adjustment amount. During operation, the driving cylinder only provides a driving force for forward and backward movement and is not responsible for guiding. A front end guide seat and a rear end positioning block are respectively arranged at the front and rear ends of the workpiece forming core rod. Through the support and guidance of the front end guide seat and the rear end positioning block, it is ensured that the workpiece forming core rod will not be deflected. Even if it is deflected, it is convenient to adjust later. The structure is simple and the operation is reliable, which greatly improves the working reliability of the workpiece forming core rod and is beneficial to the improvement of the product workpiece forming quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the installation structure of the utility model on the upper part of the forming mold;

[0017] Figure 2 This is a schematic diagram of the overall front installation structure of the positioning mechanism of the utility model;

[0018] Figure 3 This is a schematic diagram of the overall rear installation structure of the positioning mechanism of the utility model;

[0019] Figure 4 It is a three-dimensional structural diagram of the positioning mechanism of the utility model;

[0020] Figure 5 For the utility model Figure 4 Schematic diagram of the structure of the middle A area;

[0021] Figure 6 For the utility model Figure 4 Schematic diagram of the structure of area B.

[0022] Explanation of the accompanying drawings: 1. Molding die; 2. Workpiece molding core rod; 3. Positioning mechanism; 4. Driving cylinder; 5. Core rod connecting block; 6. Rear end positioning block; 7. Molding base; 8. Front end guide seat; 9. Cylinder bracket; 10. V-shaped connecting groove; 11. V-shaped positioning groove; 12. Product workpiece. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0025] Example

[0026] See also Figure 1-6 The utility model provides a technical solution: a positioning device for a molding mandrel, comprising a positioning mechanism 3 installed inside a molding die 1. In order to provide internal support for a product workpiece 12, a workpiece molding mandrel 2 is arranged inside the molding die 1. The positioning mechanism 3 is used for the installation and support of the workpiece molding mandrel 2. The positioning mechanism 3 comprises a driving cylinder 4, a mandrel connecting block 5, a rear end positioning block 6, a molding pedestal 7 and a front end guide seat 8. Figure 1As shown, a product workpiece 12 is installed on the upper part of the forming platform 7. During processing, the workpiece forming core rod 2 is supported inside the product workpiece 12. The internal support of the workpiece forming core rod 2 cooperates with the external clamping of the clamping seat to achieve forming control of the shape and size of the product workpiece 12.

[0027] The molding pedestal 7 is used for mounting and supporting the product workpiece 12. The molding pedestal 7 is fixedly mounted on the upper part of the lower die base of the molding die 1 by bolts. In order to facilitate the mounting and supporting of the driving cylinder 4, as shown in the attached Figure 2 As shown, a cylinder bracket 9 is fixedly installed on the front side of the forming platform 7, and a driving cylinder 4 is fixedly installed on the upper part of the cylinder bracket 9 for sliding drive of the workpiece forming mandrel 2. Figure 5 As shown, the core rod connecting block 5 is fixedly installed on the push rod end of the driving cylinder 4. In order to realize the soft connection between the driving cylinder 4 and the workpiece forming core rod 2, a V-shaped protrusion is provided at the rear part of the core rod connecting block 5, and a V-shaped connecting groove 10 is provided at the front end of the workpiece forming core rod 2. The V-shaped protrusion is movably engaged with the inner side of the V-shaped connecting groove 10. The workpiece forming core rod 2 is installed on the push rod end of the driving cylinder 4 through the core rod connecting block 5. There is a soft connection between the driving cylinder 4 and the workpiece forming core rod 2. After installation, there is a certain amount of adjustment between the workpiece forming core rod 2 and the driving cylinder 4.

[0028] In order to improve the sliding stability of the workpiece forming mandrel 2, as shown in the attached Figure 3 As shown, the front end guide seat 8 is fixedly installed on the front part of the forming platform 7 by bolts, and two front end guide seats 8 form a group. The front end guide seats 8 are respectively installed on the front end sides of the workpiece forming core rod 2. In order to provide sliding support for the workpiece forming core rod 2, T-shaped protrusions are fixed on both sides of the workpiece forming core rod 2, and T-shaped guide grooves are opened on the sides of the front end guide seat 8. The T-shaped protrusions are slidably embedded in the inner side of the T-shaped guide grooves, and the front end guide seat 8 is embedded and supported on the front end sides of the workpiece forming core rod 2.

[0029] In order to fit and position the rear end of the workpiece forming mandrel 2, as shown in the attached Figure 3 As shown, the rear end positioning block 6 is fixedly installed at the rear of the forming platform 7, and the rear end positioning block 6 is directly opposite to the rear end of the workpiece forming mandrel 2. In order to guide the engagement, a V-shaped positioning groove 11 is provided at the rear end of the workpiece forming mandrel 2. Figure 6As shown, the V-shaped positioning groove 11 is opened in the middle of the rear end of the workpiece forming core rod 2, and a V-shaped positioning block is arranged in front of the rear end positioning block 6, and the V-shaped positioning block is adapted to the V-shaped positioning groove 11. When working, the driving cylinder 4 only provides the driving force for the forward and backward movement, and is not responsible for guiding. In addition, the front end guide seat 8 and the rear end positioning block 6 are respectively arranged at the front and rear ends of the workpiece forming core rod 2. Through the support and guidance of the front end guide seat 8 and the rear end positioning block 6, it is ensured that the workpiece forming core rod 2 will not be deflected. Even if it is deflected, it is convenient to adjust it later. The structure is simple and the operation is reliable, which greatly improves the working reliability of the workpiece forming core rod 2 and is beneficial to the improvement of the forming quality of the product workpiece 12.

[0030] Working principle or structural principle, during processing, the product workpiece 12 is installed on the upper part of the forming platform 7 to ensure that the product workpiece 12 is installed in place, and then the driving cylinder 4 works, and the core rod connecting block 5 at the push rod end drives the workpiece forming core rod 2 embedded with it to slide and extend. During the sliding process of the workpiece forming core rod 2, the front end guide seat 8 is embedded and supported on the side of the workpiece forming core rod 2 to ensure that the workpiece forming core rod 2 is smoothly slid and inserted into the middle of the product workpiece 12. When the rear end of the workpiece forming core rod 2 contacts the rear end positioning block 6, it is supported by the rear end positioning block 6. The side V-shaped protrusions and the sliding guides of the V-shaped positioning grooves 11 allow the workpiece forming core rod 2 to be precisely fitted and pressed against the side of the rear end positioning block 6. The precise adjustment and positioning of the workpiece forming core rod 2 is achieved through the fitting guide. After that, the side of the product workpiece 12 is clamped and squeezed by the external forming fixture, and the workpiece forming core rod 2 is supported and shaped to complete the forming process of the product workpiece 12. After that, the workpiece forming core rod 2 is retracted and disengaged from the middle of the product workpiece 12 under the drive of the driving cylinder 4, and then the processed product workpiece 12 is taken out to complete the processing operation.

[0031] In summary, the device utilizes the core rod connecting block 5 arranged at the push rod end of the driving cylinder 4 to engage and connect the workpiece forming core rod 2 through the groove. The driving cylinder 4 and the workpiece forming core rod 2 are softly connected. After installation, the workpiece forming core rod 2 and the driving cylinder 4 have a certain adjustment amount. During operation, the driving cylinder 4 only provides a driving force for forward and backward movement and is not responsible for guiding. A front end guide seat 8 and a rear end positioning block 6 are respectively arranged at the front and rear ends of the workpiece forming core rod 2. Through the support and guidance of the front end guide seat 8 and the rear end positioning block 6, it is ensured that the workpiece forming core rod 2 will not be deflected. Even if it is deflected, it is convenient to adjust it later. The structure is simple and the operation is reliable, which greatly improves the working reliability of the workpiece forming core rod 2 and is beneficial to the improvement of the forming quality of the product workpiece 12.

[0032] Those skilled in the art will appreciate that the features described in the various embodiments and / or claims of the present invention may be combined and / or combined in various ways, even if such combinations and / or combinations are not explicitly described in the present invention. In particular, the features described in the various embodiments and / or claims of the present invention may be combined and / or combined in various ways without departing from the spirit and teachings of the present invention. All of these combinations and / or combinations fall within the scope of the present invention.

Claims

1. A positioning device for a forming mandrel, comprising a positioning mechanism (3) installed inside a forming mold (1), characterized in that: A workpiece forming mandrel (2) is arranged inside the forming mold (1), and the positioning mechanism (3) is used for mounting and supporting the workpiece forming mandrel (2); The positioning mechanism (3) comprises a driving cylinder (4), a core rod connecting block (5), a rear end positioning block (6), a forming platform (7) and a front end guide seat (8); the workpiece forming core rod (2) is mounted on the push rod end of the driving cylinder (4) through the core rod connecting block (5); the front end guide seat (8) is mounted on the front end side of the workpiece forming core rod (2); the rear end positioning block (6) is arranged at the rear of the forming platform (7); and the rear end of the workpiece forming core rod (2) is provided with a V-shaped positioning groove (11).

2. A positioning device for a forming mandrel according to claim 1, characterized in that: The molding pedestal (7) is fixedly mounted on the upper part of the lower die seat of the molding die (1) by means of bolts, a cylinder bracket (9) is fixedly mounted on the front side of the molding pedestal (7), and the driving cylinder (4) is fixedly mounted on the upper part of the cylinder bracket (9).

3. A positioning device for a forming mandrel according to claim 2, characterized in that: The core rod connecting block (5) is fixedly mounted on the push rod end of the driving cylinder (4), a V-shaped protrusion is arranged at the rear of the core rod connecting block (5), a V-shaped connecting groove (10) is arranged at the front end of the workpiece forming core rod (2), and the V-shaped protrusion is movably engaged with the inner side of the V-shaped connecting groove (10).

4. A positioning device for a forming mandrel according to claim 3, characterized in that: The front end guide seat (8) is fixedly mounted on the front part of the forming platform (7) by means of bolts, two front end guide seats (8) form a group, and the front end guide seats (8) are respectively mounted on the front end sides of the workpiece forming core rod (2).

5. A positioning device for a forming mandrel according to claim 4, characterized in that: T-shaped protrusions are fixed on both sides of the workpiece forming core rod (2), and a T-shaped guide groove is opened on the side of the front end guide seat (8), and the T-shaped protrusion is slidably engaged with the inner side of the T-shaped guide groove.

6. A positioning device for a forming mandrel according to claim 5, characterized in that: The rear end positioning block (6) is fixedly mounted on the rear part of the forming platform (7), the rear end positioning block (6) is directly opposite to the rear end of the workpiece forming mandrel (2), the V-shaped positioning groove (11) is arranged in the middle of the rear end of the workpiece forming mandrel (2), and a V-shaped positioning block is arranged in front of the rear end positioning block (6), and the V-shaped positioning block is matched with the V-shaped positioning groove (11).

7. A positioning device for a forming mandrel according to claim 1, characterized in that: A product workpiece (12) is installed on the upper part of the forming platform (7), and the workpiece forming core rod (2) is supported inside the product workpiece (12) during processing.

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