Material supporting and die entering device and die punching device

Abstract

The utility model relates to a material supporting and die entering device and a die punching device, which comprise a body, a first end of the body is provided with a main die core for accommodating a workpiece, a second end of the body is provided with a cushion block, and the body is provided with a cavity between the main die core and the cushion block; the ejector pin mechanism is arranged in the cavity in a penetrating mode in the axial direction, the first end of the ejector pin mechanism is matched with the main mold core, and the second end of the ejector pin mechanism is used for abutting against the cushion block; the ejector pin mechanism further comprises a damping ring, the outer wall of the ejector pin mechanism is provided with an annular groove which is concave inwards in the radial direction, the inner diameter of the damping ring is matched with the radial size of the annular groove so that the damping ring can be tightly hooped in the annular groove, and the outer diameter of the damping ring is matched with the radial size of the inner wall of the cavity. And the damping ring is in interference fit with the inner wall of the cavity. By means of the structure, the damping ring matched with the ejector pin mechanism is arranged, so that the ejector pin mechanism is in interference fit with the body, and the stability of a blank entering a mold is improved.

Description

Technical Field

[0001] This utility model relates to a mold forming device, and more particularly to a material feeding device and a punching device. Background Technology

[0002] The description in this section provides only background information related to the disclosure of this utility model and does not constitute prior art.

[0003] During the mold forming process, a punch rod is generally needed to press the workpiece into the mold cavity of the main mold core. At the other end of the mold cavity, an ejector pin mechanism is required to hold the workpiece in place. Since the process of pressing the workpiece into the mold cavity is a gradual step, during the pressing process, the punch rod, the workpiece, and the ejector pin mechanism all gradually move in the direction of impact. Therefore, it is necessary to avoid mold failure due to loose ejector pin mechanism, which would affect the forming quality of the workpiece.

[0004] There are generally two existing methods for stabilizing ejector mechanisms. One method is to install components such as anti-negative screws in the pads used to support the ejector mechanism, which, together with the transmission rod, hold the ejector mechanism in place to prevent it from loosening. However, the disadvantages are that the anti-negative screws are prone to loosening, and the rod wears out severely, still affecting accuracy. The second method is to install a spring device in the pads used to support the ejector mechanism, giving the ejector mechanism a spring force in the opposite direction. However, the spring device needs to be implemented using structures such as ring-shaped steps, which makes the pad thicker along the axial direction, occupying too much axial space and making it difficult to install on existing equipment. If the pad is made thin, its lifespan is short, and it may break during use, which still increases costs.

[0005] Currently, there is no material feeding device that can solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a material feeding device and a punching device, which can improve the stability of the blank feeding by setting a damping ring that cooperates with the ejector mechanism to make the ejector mechanism and the body interference fit.

[0007] To achieve the above objectives, this utility model discloses a material feeding device; the material feeding device includes:

[0008] The body has a first end and a second end arranged opposite to each other along the axial direction. The first end of the body has a main mold core for receiving a workpiece. The main mold core has a hollow mold cavity. The second end of the body has a pad block. The body has a cavity between the main mold core and the pad block.

[0009] A plunger mechanism having a first end and a second end disposed opposite to each other along the axial direction, the plunger mechanism being disposed in the cavity along the axial direction, the first end of the plunger mechanism being engaged with the main core, at least a part of the first end of the plunger mechanism being disposed in the mold cavity, the second end of the plunger mechanism being used to abut against the pad;

[0010] Further, the plunger mechanism is provided as an integrated plunger.

[0011] Further, the plunger mechanism is provided as an integrated plunger.

[0012] Further, the plunger mechanism is provided as an integrated plunger.

[0013] Further, the plunger mechanism is provided as an integrated plunger.

[0014] Further, the plunger mechanism is provided as an integrated plunger.

[0015] Further, the plunger mechanism is provided as an integrated plunger.

[0016] Further, the plunger mechanism is provided as an integrated plunger.

[0017] Further, the plunger mechanism is provided as an integrated plunger.

[0018] Also include a punch device, including a punch shell, a punch pad and a punch rod, wherein the punch rod is provided through the punch shell, the punch pad is installed at one end of the punch shell for the punch rod to abut, the punch rod is matched with the material supporting and molding device for the workpiece to be processed into the mold cavity.

[0019] By the above technical solutions, the beneficial effects of the utility model are as follows:

[0020] The material supporting and molding device can be matched with the damping ring of the ejector pin mechanism, the damping ring is in interference fit with the inner wall of the cavity of the body, the resistance formed between the damping ring and the body makes the ejector pin mechanism for supporting the workpiece more stable and less likely to shake, and the quality of workpiece processing is indirectly improved. Meanwhile, the damping ring structure is simple and easy to obtain, the material characteristics are stable, compared with the existing spring or stop screw method for stabilizing the ejector pin mechanism, the use cost is lower, and the service life is longer.

[0021] In order to further understand the characteristics and technical contents of the utility model, please refer to the following detailed description and drawings of the utility model, however, the provided drawings are only used for providing reference and description, and are not used to limit the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description only illustrate some embodiments in the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0023] Figure 1 is a sectional view of an integrated ejector pin mechanism of the material supporting and molding device provided by the embodiment of the present application;

[0024] Figure 2 is a sectional view of a split type ejector pin mechanism of the material supporting and molding device provided by the embodiment of the present application;

[0025] Figure 3 is a schematic view of a damping ring of the material supporting and molding device provided by the embodiment of the present application;

[0026] In the drawings: 1, body; 11, main die core; 12, pad; 13, cavity;

[0027] 2, ejector pin mechanism; 21, annular groove; 22, stop ring; 23, needle part;

[0028] 3, damping ring; 31, notch. DETAILED DESCRIPTION

[0029] In order to make the person skilled in the art better understand the technical solutions in the specification, the technical solutions in the specification will be clearly and completely described below in combination with the drawings in the specification. Obviously, the described embodiments are only part of the embodiments of the specification, rather than all the embodiments. Based on the embodiments in the specification, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the specification.

[0030] The following is to illustrate the embodiments of the utility model through specific embodiments, and the person skilled in the art can understand the advantages and effects of the utility model from the disclosed content of the specification. The utility model can be implemented or applied through other different specific embodiments, and each detail in the specification can be modified and changed in various ways based on different viewpoints and applications without departing from the concept of the utility model. In addition, the drawings of the utility model are only simple schematic illustrations, not the depiction of actual size, and the prior declaration is made. The following embodiments will further illustrate the related technical content of the utility model in detail, but the disclosed content is not used to limit the protection scope of the utility model.

[0031] It should be understood that although the terms such as "first", "second", "third" and the like may be used herein to describe various components or signals, these components or signals should not be limited by these terms. These terms are mainly used to distinguish one component from another component, or one signal from another signal. In addition, the term "or" used herein may include any one or a combination of a plurality of associated listed items as the case may be.

[0032] Please refer to Figure 1 , a material supporting and feeding into a mold device of the embodiment; wherein the material supporting and feeding into a mold device comprises:

[0033] The body 1 has a first end and a second end arranged opposite along an axial direction, the first end of the body 1 has a main die core 11 for accommodating a workpiece, the main die core 11 has a hollow die cavity, the second end of the body 1 has a pad 12, and the body 1 has a cavity 13 between the main die core 11 and the pad 12;

[0034] The ejector pin mechanism 2 has a first end and a second end arranged opposite along an axial direction, the ejector pin mechanism 2 is arranged in the cavity 13 along the axial direction, the first end of the ejector pin mechanism 2 is matched with the main die core 11, at least part of the first end of the ejector pin mechanism 2 is arranged in the die cavity, and the second end of the ejector pin mechanism 2 is used to abut against the pad 12;

[0035] The ejector pin mechanism 2 further comprises a damping ring 3, the outer wall of the ejector pin mechanism 2 has a radially inwardly recessed annular groove 21, the damping ring 3 is installed in the annular groove 21, and the inner wall of the damping ring 3 is in clearance fit with the bottom wall of the annular groove 21, so that the damping ring 3 is clamped in the annular groove 21, and the outer wall of the damping ring 3 is in interference fit with the inner wall of the cavity 13 of the body 1.

[0036] Through the above structure, in use, the operator only needs to clamp the workpiece to be processed in the position of the main die core 11, and then the workpiece is extruded in the axial direction towards the second end of the body 1 by the punch rod connected to the first end of the body 1, and the main part for bearing force is the ejector pin mechanism 2 during the extrusion of the punch rod on the workpiece. During the extrusion, the ejector pin mechanism 2 gradually displaces towards the second end of the body 1 after being stressed, and at the same time, since the outer periphery of the ejector pin mechanism 2 is provided with the damping ring 3 in interference fit with the inner wall of the cavity 13, the damping ring 3 forms a certain resistance to the displacement of the ejector pin mechanism 2 towards the second end of the body 1, thereby avoiding the shaking and instability of the ejector pin mechanism 2 under stress, and ensuring that the ejector pin mechanism 2 plays a role of stable support throughout the extrusion of the workpiece.

[0037] In the above use process, compared with the prior art method of applying resistance to the ejector pin mechanism 2 by providing a spring or a stop screw on the side of the gasket 12 of the body 1, it is obvious that the resistance to the ejector pin mechanism 2 in the present application is generated by the damping ring 3 and the inner wall of the cavity 13 of the body 1, and the effect is more stable. At the same time, since the damping ring 3 is a part of the ejector pin mechanism 2, the ejector pin mechanism 2 does not need to increase the axial length of any additional structure, and does not occupy the axial space of the equipment. Compared with the method of increasing the spring mechanism, the thickness of the gasket 12 itself can be effectively maintained, the service life of the gasket 12 is prolonged, and the problem of structural strength reduction caused by the additional mechanism for sleeving the spring is avoided. At the same time, compared with the method of applying resistance to the ejector pin mechanism 2 by providing a stop screw in the gasket 12 and cooperating with a nylon rod, the resistance provided by the annular damping ring 3 is significantly more stable, and the failure caused by loosening of the stop screw can also be avoided.

[0038] Further, please refer to the embodiment of Figure 2 , the ejector pin mechanism 2 is provided as an integrated ejector pin. At the same time, the damping ring 3 is provided at the end of the ejector pin towards the gasket 12. That is, the ejector pin mechanism 2 in the present embodiment is a complete integrated structure, which occupies less space and has no additional impact on other structures.

[0039] Further, as Figure 1As shown, the ejector pin mechanism 2 is composed of a retaining ring 22 and a pin part 23, the retaining ring 22 has a radially larger size than the pin part 23, one end of the retaining ring 22 towards the first end of the body 1 has an axially concave groove, one end of the pin part 23 towards the second end of the body 1 matches the size of the groove so that the pin part 23 is installed in the retaining ring 22 and the retaining ring 22 and the pin part 23 are in interference fit; the annular groove 21 is arranged on the retaining ring 22 so that the damping ring 3 is installed on the retaining ring. By means of the above structure, the interference fit connection relationship is also adopted between the retaining ring 22 and the pin part 23 of the ejector pin mechanism 2, the structure is stable, the damping ring 3 for providing resistance is installed at the middle position of the retaining ring 22, and the axially balanced resistance can be provided to the retaining ring 22, so that the transmission feedback effect of the retaining ring 22 to the pin part 23 is more stable. The split type retaining ring 22 and pin part 23 structure is adopted, and the reason is that the pin part 23 which plays a main functional structure is easier to process alone, and the periphery of the retaining ring 22 is limited in many places, and can be standardized in production, so that the split type retaining ring 22 and pin part 23 are more cost-saving in production and installation.

[0040] Further, the ejector pin mechanism 2 has a first stroke, at the beginning of the first stroke, the first end of the ejector pin mechanism 2 can at least penetrate part of the mold cavity, and at the end of the first stroke, the second end of the ejector pin mechanism 2 just abuts against the pad 12. That is to say, in this embodiment, the ejector pin mechanism 2 plays a role of providing resistance when the workpiece initially enters the mold cavity, and just after the workpiece is completely extruded and formed, the ejector pin mechanism 2 also abuts against the pad 12, and the punch rod, the workpiece, the ejector pin mechanism 2 and the like cannot move further to the second end of the body 1, and the machining is completed. Then, the machined workpiece can be demolded by means of the KO rod and other devices at one end of the pad 12, and the ejector pin mechanism 2 is restored to the starting position of the first stroke, so as to facilitate the next workpiece machining operation.

[0041] Further, only the damping ring 3 in the ejector pin mechanism 2 is in interference fit with the body 1, that is to say, the resistance of the ejector pin mechanism 2 mainly comes from the damping ring 3 and the body 1, and other positions of the ejector pin mechanism 2 do not have any friction relationship with the inner wall of the body 1, so as to avoid uneven stress or affect the service life of the ejector pin mechanism 2.

[0042] Further, please refer to Figure 3The damping ring 3 has a notch 31, and the damping ring 3 is made of elastic steel, so that the damping ring 3 can be installed on the ejector pin mechanism 2 in the radial direction of the ejector pin mechanism 2 after being expanded. The damping ring 3 made of steel has a long service life, low cost, simple processing and easy manufacturing, and can still provide a preset resistance to the ejector pin mechanism 2 on the basis of multiple friction. Through the notch 31, the assembly of the damping ring 3 can be easily realized by the space of the notch 31 on one side of the damping ring 3 and the elasticity of the damping ring 3 itself, which can indirectly reduce the process cost of the product itself.

[0043] The above disclosed content is only the preferred feasible embodiment of the present application, and does not limit the patent application range of the present application, so any equivalent technical change made by applying the content of the present application specification and drawings is included in the patent application range of the present application.

[0044] Each embodiment in the specification is described in a progressive manner, and the same or similar parts between each embodiment can be referred to each other, and each embodiment mainly describes the difference from other embodiments.

[0045] Although the present application is described through embodiments, those skilled in the art know that the present application has many modifications and changes without departing from the spirit of the present application, and it is hoped that the attached embodiments include these modifications and changes without departing from the present application.

Claims

1. A material feeding device, characterized in that, The material supporting and molding device comprises: a body having a first end and a second end arranged oppositely along an axial direction, the first end of the body having a main die core for accommodating a workpiece, the main die core having a hollow die cavity, the second end of the body having a pad, the body having a cavity between the main die core and the pad; a ejector pin mechanism having a first end and a second end arranged oppositely along the axial direction, the ejector pin mechanism being arranged in the cavity along the axial direction, the first end of the ejector pin mechanism being engaged with the main die core, at least a part of the first end of the ejector pin mechanism being arranged in the die cavity, the second end of the ejector pin mechanism being used for abutting against the pad; wherein the ejector pin mechanism further comprises a damping ring, an outer wall of the ejector pin mechanism having a radially inwardly recessed annular groove, the damping ring being arranged in the annular groove, an inner wall of the damping ring being in clearance fit with a bottom wall of the annular groove, so that the damping ring is tightly clamped in the annular groove, and an outer wall of the damping ring is in interference fit with an inner wall of the cavity of the body.

2. The feed into mold apparatus according to claim 1, characterized by: The ejector pin mechanism is arranged as an integrated ejector pin.

3. The feed into mold apparatus of claim 2 wherein: The damping ring is arranged at an end of the ejector pin towards the pad.

4. The feed apparatus of claim 1 wherein: The ejector pin mechanism is composed of a stop ring and a pin part, a dimension of the stop ring along the radial direction is greater than a dimension of the pin part along the radial direction, an end of the stop ring towards the first end of the body has a groove recessed along the axial direction, an end of the pin part towards the second end of the body has a dimension matching that of the groove, so that the pin part is arranged in the stop ring, and the stop ring and the pin part are in interference fit; the annular groove is arranged on the stop ring, so that the damping ring is arranged on the stop ring.

5. The feed into mold apparatus of claim 4 wherein: The damping ring is arranged at a middle position of the stop ring along the axial direction.

6. The feed apparatus of claim 1 wherein: The ejector pin mechanism has a first stroke, at the beginning of the first stroke, the first end of the ejector pin mechanism can at least penetrate part of the die cavity, at the end of the first stroke, the second end of the ejector pin mechanism just abuts against the pad.

7. The feed apparatus of claim 1 wherein: Only the damping ring in the ejector pin mechanism is in interference fit with the body.

8. The feed apparatus of claim 1 wherein: The damping ring has a notch, and the damping ring is arranged to be made of elastic steel, so that the damping ring can be expanded and then arranged on the ejector pin mechanism in the radial direction of the ejector pin mechanism.

9. A die assembly comprising a die shell, a die shoe and a die bar, wherein, The punch rod is arranged through the punch shell, the punch pad is arranged at one end of the punch shell for abutting against the punch rod, the punch rod is matched with the material supporting and molding device of any one of claims 1-8, for pushing the workpiece to be processed into the die cavity.

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