A molding device for ejecting material

Abstract

This utility model provides a forming device for ejecting material, comprising an ejection device, which includes a T-shaped push sleeve, a fixing block, a T-shaped fixing rod, a straight pad, and an ejection rod. The T-shaped push sleeve, fixing block, T-shaped fixing rod, straight pad, and ejection rod are connected sequentially. The T-shaped push sleeve is a T-shaped hollow tube and is mounted on the fixing block. The fixing block is fastened to one end of the T-shaped fixing rod with screws. The straight pad is a flat sheet, and the other end of the T-shaped fixing rod is connected to one side of the straight pad. The other side of the straight pad is connected to the ejection rod. When the ejection rod moves under force, it moves the straight pad, T-shaped fixing rod, fixing block, and T-shaped push sleeve to eject material. This device allows for continuous mass production with higher efficiency.

Description

Technical Field

[0001] This utility model relates to a cold heading forming device, specifically, to a forming device with a T-shaped pusher assembly that ejects material after cold heading forming. Background Technology

[0002] Cold heading is a processing method with high comprehensive economic benefits, high added value, high efficiency, and stable quality for processing irregular parts, sleeves, and wind power products in fasteners. It is the preferred processing method commonly used in the fastener industry and is also an advanced processing method with promising development prospects that is widely used both domestically and internationally. In particular, it has a great advantage in terms of production efficiency and processing cost for long sleeve parts.

[0003] With the rapid development of science and technology, conventional fuel vehicles and new energy vehicles are constantly evolving, placing higher demands on fasteners, especially sleeve-type parts. Automotive parts are a crucial area and means for my country's automotive industry to participate in globalization through global supply chains, international trade, and technological advancements, thereby enhancing its international influence. The cold heading process for sleeve-type fasteners has become very mature with the advancement of new technologies, typically employing six-station forming to meet customers' high-quality streamlined requirements.

[0004] Existing cold heading forming equipment for deep hole sleeve parts is prone to problems such as core material carrying, untimely material removal, and cold heading die breakage due to double material during the cold heading process. When facing such technical challenges in fasteners, general material removal measures cannot effectively guarantee the stability of large-volume continuous production of large sleeve parts, resulting in low overall economic benefits and hindering the realization of large-volume continuous automated production.

[0005] Therefore, there is still room for improvement in existing cold heading forming equipment. Utility Model Content

[0006] The purpose of this invention is to provide a high-efficiency, stable, and reliable forming device for ejecting material from a T-shaped pusher assembly after cold heading, thereby solving the problems of the prior art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A forming device for cold heading of deep-hole sleeve parts is provided. The forming device includes a mold frame and a stripping and ejecting device. The stripping and ejecting device is axially movable on the mold frame. The stripping and ejecting device includes a T-shaped push sleeve, a fixing block, a T-shaped fixing pad, a straight pad, and an ejection pad. The T-shaped push sleeve, fixing block, T-shaped fixing pad, straight pad, and ejection pad are connected in sequence. The T-shaped push sleeve is a T-shaped hollow tube and is mounted on the fixing block. The fixing block is fastened to one end of the T-shaped fixing pad by screws. The straight pad is a flat sheet. The other end of the T-shaped fixing pad is connected to one side of the straight pad, and the other side of the straight pad is connected to the ejection pad. When the ejection pad moves under force, it moves the straight pad, T-shaped fixing pad, fixing block, and T-shaped push sleeve to strip the material.

[0009] Preferably, the mold frame includes a punch rod, a mold base, a groove fixing pad, and a slotted mold base pad. One end of the mold base is fixedly connected to the slotted mold base pad, and the other end of the mold base is connected to the fixing block. The groove fixing pad is disposed in a groove on the side of the mold base facing the slotted mold base pad. One end of the punch rod abuts against the groove fixing pad, and the other end of the punch rod passes through and connects the mold base, the fixing block, and the T-shaped push sleeve. The punch rod is used for forming. The mold base has a mold base through hole, and the T-shaped fixing pad is movably disposed in the mold base through hole.

[0010] Preferably, the fixing block includes a fixing hole block and a fixing pad block, one end of the T-shaped push sleeve abuts against the fixing hole block, and the other end of the T-shaped push sleeve passes through and connects to the fixing pad block.

[0011] Preferably, the unloading and ejection device further includes a circular helical spring, which is disposed on the T-shaped fixing pad, with its two ends abutting against the stepped surface of the T-shaped fixing pad and the stepped surface of the mold base through hole, respectively.

[0012] The purpose of this application is to design a forming device with a T-shaped push sleeve for ejecting blanks after cold heading of deep-hole sleeve parts. The forming device of this application adopts an external forming ejection device to replace the existing single non-ejection forming device that increases the friction of the outer circle of the part by expanding the outer circle. The external forming ejection device can unload the material in time, avoiding the dragging of the clamps after the part is clamped due to the part not being released in time, or even the mandrel carrying material re-entering the mold cavity to form double material, causing the mold to burst. This solves the technical problem of double material that is easy to occur in the processing of sleeve parts, and also solves the problem of unstable clamping caused by the part flying out due to the large gap between the mold and the part during the forming of deep-hole sleeve parts. This reduces production costs and debugging difficulty, ensures product quality requirements, and improves the company's market competitiveness.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The device described in this application can be used for continuous mass production;

[0015] 2. The production efficiency of the device parts in this application is higher;

[0016] 3. The deep hole sleeve parts produced by this application have more consistent lengths and more stable quality, thus improving enterprise efficiency.

[0017] Of course, implementing any specific embodiment of this utility model may not necessarily achieve all of the above technical effects at the same time. Attached Figure Description

[0018] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0019] Figure 1 This is a cross-sectional schematic diagram of the molding apparatus of this application;

[0020] Figure 2 This is a comparative diagram showing the material ejection process before and after the processing of the sleeve parts in this application. Detailed Implementation

[0021] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0022] Please refer to Figure 1The cross-sectional schematic diagram of the forming device in this application is a cold heading forming device used for deep hole parts such as sleeves. Specifically, it is applicable to the extrusion and ejection of materials after hole stretching for all deep hole parts. Cold heading involves using a mold to stretch and form a metal bar into a deep hole at room temperature. During cold heading, the annular wall of the deep hole fits onto the mandrel. After cold heading and stretching, the material is ejected through a special ejection device. This application features a T-shaped pusher assembly, which efficiently, stably, and reliably ejects the formed blank 99 from the mandrel 5 after cold heading. The forming device uses an external forming and ejection device to promptly unload the material and avoid clamping, solving the technical problem of double material formation during sleeve part processing. It also solves the problem of unstable clamping caused by parts flying out due to large die clearance during the forming process of deep hole parts, thereby reducing production costs and debugging difficulty, and ensuring product quality requirements.

[0023] like Figure 1 and Figure 2 As shown, the molding device described in this application includes a mold frame and a stripping and ejection device. The stripping and ejection device is axially movable on the mold frame. Here, axial movement refers to the stripping and ejection device moving along the axial direction of the mold frame. The purpose of the movement is to eject the molded blank. The stripping and ejection device includes a T-shaped push sleeve 1, a fixing block 2, a T-shaped fixing pad 11, a straight pad 12, and an ejection pad 13. The T-shaped push sleeve 1, fixing block 2, T-shaped fixing pad 11, straight pad 12, and ejection pad 13 are connected in sequence and can move forward and backward together. The T-shaped push sleeve 1 is a T-shaped hollow tube. The T-shaped push sleeve 1 is disposed on the fixing block 2. The stepped portion of the fixing block 2 engages with the T-shaped push sleeve 1. The stepped portion of the T-shaped push sleeve 1 is confined within the fixed block 2. The fixed block 2 is fastened to one end of the T-shaped fixing pad 11 by screws. The other end of the T-shaped fixing pad 11 is connected to one side of the straight pad 12. The other side of the straight pad 12 is connected to the ejector pad 13. The straight pad 12 is a flat sheet with curved ends. In this embodiment, to achieve stable movement, two T-shaped fixing pads 11 are used, symmetrically arranged and connected to the side of the straight pad 12. During material ejection, the ejector pad 13 moves under force, causing the straight pad 12, T-shaped fixing pad 11, fixed block 2, and T-shaped push sleeve 1 to move for material ejection. Figure 2 During the unloading process, the ejector rod 13 moves to the right under the force, sequentially pushing the straight pad 12, the T-shaped fixing pad 11, the fixing block 2 and the T-shaped push sleeve 1 to slide to the right, pushing the formed blank to slide off the punch rod 5.

[0024] Please refer to Figure 1The mold frame includes a punch rod 5, a mold base 6, a groove fixing pad 7, and a slotted mold base pad 9. One end of the mold base 6 is fixedly connected to the slotted mold base pad 9, and the other end of the mold base 6 is connected to the fixing block 2. The slotted mold base pad 9 has a slot that conforms to the slotted pad 12, allowing the slotted pad 12 to slide smoothly in the slotted mold base pad 9 without deflection. The groove fixing pad 7 is disposed in a groove on the side of the mold base 6 facing the slotted mold base pad 9. One end of the punch rod 5 abuts against the groove fixing pad 7, and the other end of the punch rod 5 passes through the mold base. 6. Fixing block 2, T-shaped push sleeve 1, the punch rod 5 is used for forming and the formed blank is still sleeved on it after cold heading; the mold base 6 has a mold base through hole 61, the T-shaped fixing pad 11 is movably disposed in the mold base through hole 61, the punch rod 5 is always stationary under the support of the groove fixing pad 7 and the slotted mold base pad 9; as described above, in this embodiment, in order to stabilize the movement of the T-shaped fixing pad 11, there are two T-shaped fixing pads 11, so there are also two mold base through holes 61. When the material is stripped, the T-shaped fixing pad 11 is forced to move to the right, pushing the formed blank on the punch rod 5 off.

[0025] Figure 1 In this application, the fixing block 2 includes a fixing hole block 21 and a fixing pad block 22. The fixing hole block 21 and the fixing pad block 22 are fixedly connected by a screw. One end of the T-shaped push sleeve 1 abuts against the fixing hole block 21, and the other end of the T-shaped push sleeve 1 passes through the fixing pad block 22. This application uses the fixing hole block 21 and the fixing pad block 22 to clamp and fix the T-shaped push sleeve 1, but this cannot be used to limit this application. For example, if only the fixing hole block 21 is screwed to connect the T-shaped push sleeve 1, as long as the connection can be stable, it should be within the scope of protection of this application.

[0026] Please refer to Figure 1 The ejector device further includes a circular helical spring 10, which is disposed on the T-shaped fixing pad 11. As described above, in this embodiment, there are two T-shaped fixing pads 11, and therefore two circular helical springs 10. The two ends of the circular helical spring 10 abut against the stepped surface of the T-shaped fixing pad 11 and the stepped surface of the mold base through hole 61, respectively. After assembly, the circular helical spring 10 is in a compressed state, pushing the T-shaped fixing pad 11 to the leftmost position. Due to the presence of the circular helical spring 10, when not ejecting material, the T-shaped fixing pad 11, under the action of the circular helical spring 10, keeps the fixing block 2 always in close contact with the end face of the mold base 6.

[0027] Please refer to Figure 2To facilitate understanding of the special out-of-mold forming ejection device and its relative relationships during operation, three schematic diagrams of the operation process are compared side by side. In the top diagram, the ejection device waits for ejection after the deep hole forming of the part. In the middle diagram, the combination of the fixing block 2 and the T-shaped push sleeve 1 in the ejection device is pushed by the ejection pad 13 in sequence by the force of the push rod 13, and then extended and slowly ejected by the action of the circular spiral spring 10. In the bottom diagram, the combination of the fixing block 2 and the T-shaped push sleeve 1 in the ejection device is pushed by the force of the push rod 13 in sequence by the force of the push rod 13, and then extended by the action of the circular spiral spring 10. When the straight pad 12 is close to the groove fixing pad 7, the formed blank 99 is ejected and leaves the mold cavity.

[0028] The working principle of this application will be explained next; please refer to [link / reference]. Figure 1 and Figure 2 :

[0029] 1. In the stripping and ejection device, before stripping and ejection, the combination of the fixed block 2 and the T-shaped push sleeve 1 is supported by the circular coil spring 10, which supports the T-shaped fixed pad rod 11 to pass through the mold base 6 and is connected by screws. The combination of the fixed block 2 and the T-shaped push sleeve 1 can slide back and forth on the punch rod 5.

[0030] 2. Under the action of the push rod 13 pushing the straight pad 12 and the T-shaped push rod 11 in sequence, the assembly of the fixed block 2 and the T-shaped push sleeve 1 can only move forward to eject the material on the punch rod 5 in conjunction with the support of the circular spiral spring 10.

[0031] 3. When the ejector rod 13 extends under the action of pushing the straight pad 12 and the T-shaped fixing pad 11 in sequence and squeezing the circular coil spring 10, when the straight pad 12 is close to the groove fixing pad 7, the combination of the fixing block 2 and the T-shaped push sleeve 1 has slowly pushed the part out of the front end of the punch rod 5, and the forming blank 99 begins to separate from the punch rod 5;

[0032] 4. When the straight pad 12 is pressed against the groove fixing pad 7, the forming blank 99 is separated from the punch rod 5, the movement stops, and during the unloading process, the punch rod 5 is always in contact with the inner wall of the sleeve part and does not rotate steadily. Finally, the part is removed and enters the clamp of the next process.

[0033] 5. The molding blank 99 is continuously and stably produced by repeating the working steps 1 to 4 during the process of demolding, unloading, inserting into the mold, and pressing.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] 1. The device described in this application can be used for continuous mass production;

[0036] 2. The production efficiency of the device parts in this application is higher;

[0037] 3. The parts produced by this application have a more aesthetically pleasing appearance at the riveted joints, more stable quality, and improved enterprise efficiency.

[0038] Of course, any specific embodiment of the present invention may not necessarily have all of the above technical effects at the same time.

[0039] The above-disclosed embodiments are merely preferred embodiments of the present utility model, but are not intended to limit the scope thereof. Any equivalent changes and modifications made by those skilled in the art without departing from the spirit and essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A stripping push-out forming device for cold heading forming of a sleeve deep hole type part, characterized in that, The molding device includes a mold frame and a stripping and ejection device. The stripping and ejection device is axially movable on the mold frame and includes a T-shaped push sleeve, a fixing block, a T-shaped fixing rod, a straight pad, and an ejection rod. The T-shaped push sleeve, fixing block, T-shaped fixing rod, straight pad, and ejection rod are connected in sequence. The T-shaped push sleeve is a T-shaped hollow tube. The T-shaped push sleeve is set on the fixing block. The fixing block is fastened to one end of the T-shaped fixing pad by screws. The straight pad is a flat sheet. The other end of the T-shaped fixing pad is connected to one side of the straight pad. The other side of the straight pad is connected to the push-out pad. When the ejector rod moves under force, it moves in conjunction with the straight pad block, the T-shaped fixing pad rod, the fixing block, and the T-shaped push sleeve to remove the material.

2. The stripper push-out forming apparatus according to claim 1, wherein The mold frame includes a punch rod, a mold base, a groove fixing pad, and a slotted mold base pad. One end of the mold base is fixedly connected to the slotted mold base pad, and the other end of the mold base is connected to the fixing block. The groove fixing pad is disposed in a groove on the side of the mold base facing the slotted mold base pad. One end of the punch rod abuts against the groove fixing pad, and the other end of the punch rod passes through and connects the mold base, the fixing block, and the T-shaped push sleeve. The punch rod is used for forming. The mold base has a mold base through hole, and the T-shaped fixing pad is movably disposed in the mold base through hole.

3. The stripper push-out forming apparatus according to claim 2, wherein The fixing block includes a fixing hole block and a fixing pad block. One end of the T-shaped push sleeve abuts against the fixing hole block, and the other end of the T-shaped push sleeve passes through and connects to the fixing pad block.

4. The stripper push-out forming apparatus according to claim 3, wherein The unloading and ejection device also includes a circular helical spring, which is disposed on the T-shaped fixing pad. The two ends of the circular helical spring abut against the stepped surface of the T-shaped fixing pad and the stepped surface of the mold base through hole, respectively.

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