Feeding groove structure and powder forming press

Abstract

The utility model provides a feeding groove structure and a powder forming press, and relates to the technical field of powder press structures. Comprising a feeding component, a movable feeding groove and a driving device, a cavity is formed in the movable feeding groove and used for receiving materials conveyed by the feeding component, and the driving device is used for driving the movable feeding groove to move back and forth between the feeding component and the lower die. Materials falling from the feeding part are conveyed to the position above the lower die for discharging; a fixed baffle fixed to a press platform is arranged at the bottom of the movable feeding groove, and a groove is formed in the end, close to the lower die, of the fixed baffle so that redundant materials can be sent back into a cavity of the movable feeding groove when the movable feeding groove returns to the position of the feeding component from the position of the lower die. According to the scheme, the waste of the granulation powder can be reduced, and the residual quantity of the granulation powder on a press platform is also reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of powder press structure, in particular to a feeding trough structure and a powder forming press. Background Art

[0002] Powder dry pressing molding machine is a kind of equipment that presses powdered materials into shape under a certain pressure through a mold. The rationality and stability of its structural design are crucial to ensure the quality and precision of the molded parts. In recent years, domestic and foreign scholars have conducted a lot of research on the structure of powder dry pressing molding machine and achieved a series of results. However, due to the diversity of powder materials and the complexity of the molding process, the structural design and optimization of powder dry pressing molding machine still face many challenges. Powder dry pressing molding machine is mainly composed of several parts, including feeding system, pressing system, demolding system and control system. The feeding system is responsible for feeding the powder material into the mold evenly and continuously; the pressing system molds the powder in the mold by applying pressure; the demolding system is responsible for taking the molded product out of the mold; the control system accurately controls the entire molding process to ensure the quality and production efficiency of the product. The working principle of powder dry pressing molding machine is mainly based on the compressibility of granulation powder. The granulation powder is crushed in the mold by pressure to form a green body with a certain strength. The specific process is that under the action of the feeding system, the powder material is fed into the mold cavity. Subsequently, the pressing system applies pressure by hydraulic or mechanical means, so that the powder is gradually compacted by uniform pressure in the mold. After reaching the predetermined pressure, it is maintained for a period of time to form a stable bond between the powder particles. Finally, the demoulding system removes the molded product from the mold, completing the entire molding process.

[0003] Among them, the feeding device is a key component to ensure the uniform supply of powder materials. In the mechanical press, the feeding device is connected to the pressing wheel through a shaft to realize the linkage between demoulding and feeding, that is, after the green body is demoulded, the feeding trough moves to the lower die mouth, and the lower die is filled by the fluidity of the granulation powder. The weight of the green body depends on the amount of granulation powder flowing into the lower die cavity through the feeding trough, that is, there are high requirements for the consistency of the granulation powder flow. However, it has a large deviation under long-term use; at the same time, during long-term use, the granulation powder is easy to leak from the feeding trough and remain on the platform surface, resulting in waste of granulation powder, and the granulation powder remaining on the surface is sandwiched between the mold platform and the feeding trough, causing wear and further increasing the leakage of granulation powder. Utility Model Content

[0004] The utility model discloses a feeding trough structure, aiming to solve the above-mentioned problems.

[0005] The utility model adopts the following scheme:

[0006] The present application provides a feeding trough structure, which is suitable for being arranged on a press platform, wherein a lower die is arranged on the press platform, comprising: a feeding component, a movable feeding trough and a driving device, wherein a cavity is arranged in the movable feeding trough for receiving the material conveyed from the feeding component, and the driving device is suitable for driving the movable feeding trough to move back and forth between the feeding component and the lower die, so as to transport the material dropped from the feeding component to the upper part of the lower die for unloading; a fixed baffle fixed on the press platform is arranged at the bottom of the movable feeding trough, and a groove is arranged at one end of the fixed baffle close to the lower die so as to send excess material back to the cavity of the movable feeding trough when the movable feeding trough returns from the lower die position to the feeding component position.

[0007] Furthermore, the cavity in the movable feeding trough is configured to be wide at the top and narrow at the bottom, and a movable groove adapted to the fixed baffle is provided at the bottom of the movable feeding trough to facilitate the movable feeding trough to move along the fixed baffle.

[0008] Furthermore, a vibration device is provided on the movable feeding trough to synchronously vibrate when feeding so that the material in the cavity falls into the lower mold.

[0009] Furthermore, the movable feeding trough is made of organic polymer.

[0010] Furthermore, an upper punch structure is arranged above the lower die, and the driving device connects the upper punch structure and the movable feeding trough to realize the linkage between the movable feeding trough and the upper punch structure.

[0011] Furthermore, the feeding component includes a feeding barrel and a connecting portion, and the connecting portion is configured to be a structure that is narrow at the top and wide at the bottom, and is suitable for matching with the cavity of the movable feeding trough.

[0012] Furthermore, a lower blank opening is provided on a side of the lower die away from the movable feeding trough.

[0013] The utility model also provides a powder forming press, comprising any one of the above-mentioned feeding trough structures.

[0014] Beneficial effects:

[0015] In the scheme of the utility model, a movable feeding trough, a fixed baffle and a feeding component are arranged, and a bevel structure is provided on the fixed baffle. Granulated powder of a fixed weight or volume can be obtained by controlling the cavity volume of the movable feeding trough, and filled into the lower die and returned during pressing. The granulated powder that does not flow into the lower die returns to the cavity through the bevel of the fixed baffle, thereby improving the controllability of the blank weight and reducing the waste of granulated powder and the residual amount on the press platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a feeding trough structure in an initial state according to an embodiment of the utility model;

[0017] Figure 2 This is a structural schematic diagram of a feeding chute structure in a feeding state according to an embodiment of the utility model;

[0018] Figure 3 It is a schematic diagram of the connection structure between a movable feeding trough and a fixed baffle of a feeding trough structure in an embodiment of the utility model;

[0019] Figure 4 This is a structural schematic diagram of a fixed baffle of a feeding trough structure in an embodiment of the utility model;

[0020] Icons: movable feeding trough 1, fixed baffle 2, feeding component 3, driving device 4, upper punch structure 5, lower blank mouth 6, lower die 7, press platform 8, vibration device 9, groove 2-1. DETAILED DESCRIPTION

[0021] Combination Figures 1 to 4 As shown, this embodiment provides a powder molding press, including a feed trough structure. The feed trough structure is suitable for being arranged on a press platform 8, and a lower die 7 and an upper punch structure 5 are arranged on the press platform 8. The upper punch structure 5 is adapted to the lower die 7 so that it can enter the space of the lower die 7 for pressing and molding. The feeding trough structure includes: a feeding component 3, a movable feeding trough 1 and a driving device 4, wherein a cavity is arranged in the movable feeding trough 1 for receiving the material conveyed from the feeding component 3, and the driving device 4 is suitable for driving the movable feeding trough 1 to move back and forth between the feeding component 3 and the lower mold 7 so as to transport the material dropped from the feeding component 3 to the upper part of the lower mold 7 for unloading; a fixed baffle 2 fixed on the press platform 8 is arranged at the bottom of the movable feeding trough 1, and a groove 2-1 is arranged at one end of the fixed baffle 2 close to the lower mold 7 so as to send excess material back to the cavity of the movable feeding trough 1 when the movable feeding trough 1 returns from the position of the lower mold 7 to the position of the feeding component 3.

[0022] In this embodiment, the fixed baffle plate 2 can be fixed to the press platform 8 by bolts, and guide grooves are arranged on both sides of the fixed baffle plate 2. The movable feeding trough 1 is arranged on the guide grooves and can be guided by the fixed baffle plate 2. Of course, in other embodiments, the fixed baffle plate 2 can also be integrated with the press platform 8.

[0023] The cavity in the movable feeding trough 1 is configured to be wide at the top and narrow at the bottom, and a movable groove adapted to the fixed baffle 2 is provided at the bottom of the movable feeding trough 1 so that the movable feeding trough 1 can move along the fixed baffle 2. The cavity includes an upper feed port and a lower discharge port, the upper feed port is adapted to the feeding component 3, and the lower discharge port is adapted to the lower mold 7. The amount of material discharged each time can be controlled by controlling the volume of the cavity. Here, the volume of the cavity can be controlled by filling a portion of the material to reduce the volume of the cavity and thus achieving control. Of course, the movable feeding trough 1 can also be replaced when necessary to achieve a change in the volume of the cavity.

[0024] In a preferred embodiment, the movable feeding trough 1 is provided with a vibration device 9 to vibrate synchronously when feeding so that the material in the cavity falls into the lower mold 7. The vibration device 9 here adopts an existing structural product, and can achieve timed vibration synchronized with feeding through program control. When the movable feeding trough 1 returns to the initial state, the powder flows into the cavity of the movable feeding trough 1 through the feeding component 3, and at this time, the vibration device 9 can also be controlled to start to achieve the purpose of compaction.

[0025] In this embodiment, the movable feeding trough 1 is made of organic polymer or metal material. Preferably, it is made of organic polymer, such as polytetrafluoroethylene, which has the advantage of good lubricity with metal, reducing friction, thereby reducing the impact of metal debris on the blank.

[0026] The driving device 4 can adopt a linkage device, for example, the existing linkage shaft and the mechanical wheel are used to connect the upper punch structure 5 and the movable feeding trough 1 to realize the linkage between the movable feeding trough 1 and the upper punch structure 5. The linkage effect here means that when the movable feeding trough 1 moves toward the lower die 7, the upper punch structure 5 is synchronously driven to lift up to expose the material discharge space of the lower die 7, and when the movable feeding trough 1 moves toward the direction of the feeding component 3, the upper punch structure 5 is synchronously driven to fall to compact the powder in the lower die 7, and the linkage design of the two avoids mutual interference.

[0027] In this embodiment, the feeding component 3 includes a feeding barrel and a connecting portion, and the connecting portion is configured as a structure that is narrow at the top and wide at the bottom, and is suitable for matching with the cavity of the movable feeding trough 1. The feeding method of narrow at the top and wide at the bottom can reduce the accumulation of materials.

[0028] The lower die 7 is provided with a lower blank opening 6 on a side away from the movable feeding trough 1 for guiding the pressed product out for unloading.

[0029] During operation, when the movable feeding trough 1 moves back to the initial state, the front end of the movable feeding trough 1 scrapes over the lower die 7, flattens the excess overflowed granulation powder, and sends it back to the cavity of the movable feeding trough 1 through the groove 2-1 of the fixed baffle 2, thereby reducing the overflow of the granulation powder.

[0030] Through the scheme of this embodiment, the weight (volume) of the granulated powder in the movable feeding trough 1 is fixed, and vibration is adopted during filling, thereby improving the controllability of the weight of the blank; the slope design of the fixed baffle 2 is conducive to the return of excess granulated powder to the cavity of the movable feeding trough 1, thereby reducing the waste of granulated powder and reducing the residual amount of granulated powder on the press platform 8.

[0031] It should be understood that the above are only preferred implementations of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions under the concept of the present utility model belong to the protection scope of the present utility model.

[0032] The above description of the drawings used in the implementation manner only shows certain embodiments of the utility model and should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

Claims

1. A feeding trough structure, which is suitable for being arranged on a press platform, wherein a lower die is arranged on the press platform; characterized in that: include: A feeding component, a movable feeding trough and a driving device, wherein a cavity is provided in the movable feeding trough for receiving the material conveyed from the feeding component, and the driving device is suitable for driving the movable feeding trough to move back and forth between the feeding component and the lower die so as to transport the material dropped from the feeding component to the upper part of the lower die for unloading; a fixed baffle fixed on the press platform is provided at the bottom of the movable feeding trough, and a groove is provided at one end of the fixed baffle close to the lower die so as to send excess material back to the cavity of the movable feeding trough when the movable feeding trough returns from the lower die position to the feeding component position.

2. The feeding trough structure according to claim 1, characterized in that: The cavity in the movable feeding trough is configured to be wide at the top and narrow at the bottom, and a movable groove adapted to the fixed baffle is provided at the bottom of the movable feeding trough so that the movable feeding trough can move along the fixed baffle.

3. The feeding trough structure according to claim 1, characterized in that: The movable feeding trough is provided with a vibration device to synchronously vibrate when feeding so as to shake the material in the cavity into the lower die.

4. The feeding trough structure according to claim 1, characterized in that: The movable feeding trough is made of organic polymer.

5. The feeding trough structure according to claim 1, characterized in that: An upper punch structure is arranged above the lower die, and the driving device connects the upper punch structure and the movable feeding trough to realize the linkage between the movable feeding trough and the upper punch structure.

6. The feeding trough structure according to claim 2, characterized in that: The feeding component comprises a feeding barrel and a connecting portion. The connecting portion is configured to be a structure that is narrow at the top and wide at the bottom and is suitable for matching with the cavity of the movable feeding trough.

7. The feeding trough structure according to claim 1, characterized in that: A lower blank opening is arranged on one side of the lower die away from the movable feeding trough.

8. A powder molding press, characterized in that: The invention comprises a feeding trough structure as described in any one of claims 1 to 7.

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