CN208991751U - A kind of uniform temperature and pressure dust feeder of SMC forming powder and press-forming machine - Google Patents

A kind of uniform temperature and pressure dust feeder of SMC forming powder and press-forming machine Download PDF

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Publication number
CN208991751U
CN208991751U CN201821722271.8U CN201821722271U CN208991751U CN 208991751 U CN208991751 U CN 208991751U CN 201821722271 U CN201821722271 U CN 201821722271U CN 208991751 U CN208991751 U CN 208991751U
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powder
smc
spiral mixing
uniform temperature
mixing rod
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CN201821722271.8U
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张修齐
郭文英
邵国庆
刘向东
吴清祥
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Shandong Jingchuang Technology Research Institute of Magnetoelectrics Industry Co., Ltd.
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Shandong Jingchuang Functional Composites Co Ltd
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Abstract

The utility model discloses a kind of uniform temperature and pressure dust feeder of SMC forming powder and press-forming machines, belong to SMC molding field, the uniform temperature and pressure dust feeder includes material feeding shoe, material feeding shoe includes expecting boots shell, lid the material boots cover board being located on material boots shell, the powder inlet pipe road being connected on material boots cover board and the cylinder assembly for being used to drive material boots shell mobile positioned at material boots shell rear, is provided with powder preheating device on powder inlet pipe road;At least two spiral mixing rods are provided in material boots shell, aperture is provided in spiral mixing rod, heating element is inserted in aperture, the end of spiral mixing rod is provided with the driving assembly for driving spiral mixing rod to rotate.The utility model can be realized being evenly heated for SMC powder, guarantee powder temperature uniform throughout inside material feeding shoe, and the compressibility that can be improved SMC powder to powder heating improves the overall performance of part to further increase the density and intensity of SMC.

Description

A kind of uniform temperature and pressure dust feeder of SMC forming powder and press-forming machine
Technical field
The utility model relates to SMC molding field, a kind of uniform temperature and pressure dust feeder of SMC forming powder and tool are particularly related to There is the press-forming machine of the device.
Background technique
PM technique is a kind of parts machining process by mixing, compacting and thermal sintering, it may be implemented zero The near-net-shape of part, can reduce subsequent processing operations, reduce production cost, be a kind of green manufacture technology, thus powder smelting Technology for gold be widely used in structural member, function element manufacture in.The maximum advantage of PM technique is exactly near-net-shape, In product from subsequent manufacturing procedure can be reduced to greatest extent during being fabricated onto and be delivered for use.
The forming of SMC (Soft Magnetic Composite, soft-magnetic composite material) is equally the side using powder metallurgy Formula, but since SMC requires annealing temperature lower (350-600 DEG C or so) in annealing, so being difficult further by sintering Improve the density and intensity of SMC.To improve the density and intensity of SMC, conventional pressing mode generallys use raising press power Guarantee the density and intensity of SMC, but under the conditions of cold pressing after press power reaches certain numerical value, the compression energy of SMC powder Power has reached the limit, and density and the intensity for promoting SMC by improving press power again at this time are ineffective.
For the density and intensity for further increasing SMC, some in material feeding shoe by being inserted into several heating in the prior art Stick heats powder.However, due to the position for the heating rod being put into material feeding shoe be it is fixed, to powder into Only the powder around heating rod can effectively be heated when row heating, and to the powder from heating rod slightly distant positions Heat insufficient, it is uneven in different position heating that this results in the powder in material feeding shoe, and then influences the globality of part Energy.
Utility model content
Uniformly heated SMC can be carried out to powder the technical problem to be solved by the present invention is to provide one kind shape powder Expect uniform temperature and pressure dust feeder and press-forming machine.
In order to solve the above technical problems, the utility model offer technical solution is as follows:
On the one hand, a kind of SMC forming uniform temperature and pressure dust feeder of powder is provided, including material feeding shoe, the material feeding shoe include Material boots shell builds the material boots cover board being located on the material boots shell, the powder inlet pipe road being connected on the material boots cover board and is located at The cylinder assembly that the material boots shell rear is used to drive the material boots shell mobile, in which: be provided on the powder inlet pipe road Powder preheating device;It is provided at least two spiral mixing rods in the material boots shell, is provided with out in the spiral mixing rod Hole is inserted with heating element in the aperture, and the end of the spiral mixing rod is provided with for driving the spiral mixing rod The driving assembly of rotation.
Further, the powder preheating device includes the powder material tank being connected on the powder inlet pipe road and is threaded through described Several heating rods in powder material tank.
Further, the spiral mixing rod is arranged along the left and right directions of the material boots shell, the spiral mixing rod Level height is consistent.
Further, the spiral mixing rod is two and the hand of spiral of its blade is opposite.
Further, the two sides of the material boots shell are provided with circular hole, and rolling bearing, the spiral shell are equipped in the circular hole Rotation stirring rod is mounted on the material boots shell by the rolling bearing.
Further, the driving component includes the gear for being installed in the spiral mixing rod both ends;
It is provided with chopping block below the material feeding shoe, the two sides of the material boots shell is provided with track on the chopping block, The tooth socket matched with the gear is provided on the track.
Further, vertical baffle is provided on the chopping block on the outside of the track, is arranged on the vertical baffle There are horizontal guide grooves, the end of the spiral mixing rod is pierced by the horizontal guide grooves, and the end of the spiral mixing rod is in institute It states and is provided with locating snap ring on the outside of vertical baffle.
Further, temperature sensor is provided on the material boots cover board.
Further, framed shape friction plate is arranged in the lower section of the material boots shell, and the rear portion of the material boots shell is hinged with For connecting the connecting rod of the cylinder assembly.
On the other hand, a kind of press-forming machine is provided, including any of the above-described SMC shapes the uniform temperature and pressure dust feeder of powder.
The utility model has the following beneficial effects:
The uniform temperature and pressure dust feeder of SMC forming powder and press-forming machine of the utility model, pass through powder inlet pipe road first On powder preheating device to powder carry out primary heating, then by material the intracorporal spiral mixing rod with heating element of boots shell Powder is stirred and reheating, so as to realize being evenly heated for SMC powder, guarantees powder temperature inside material feeding shoe Uniform throughout, and the compressibility of SMC powder can be improved to powder heating, so that the density and intensity of SMC is further increased, Improve the overall performance of part.
Detailed description of the invention
Fig. 1 is that the SMC of the utility model shapes the structural schematic diagram of the uniform temperature and pressure dust feeder of powder;
Fig. 2 is the structural schematic diagram of powder preheating device in Fig. 1;
Fig. 3 is the structural schematic diagram of material feeding shoe in Fig. 1, wherein (a) is the front view of material feeding shoe bottom, it (b) is left view, It (c) is bottom view;
Fig. 4 is the decomposition texture schematic diagram of material feeding shoe shown in Fig. 3;
Fig. 5 is the schematic diagram of the section structure of spiral mixing rod in Fig. 3;
Fig. 6 is the structural schematic diagram of chopping block part in Fig. 1, wherein (a) is front view, (b) is left view, (c) is to look up Figure;
Fig. 7 is the structural schematic diagram of cylinder assembly in Fig. 1.
Specific embodiment
In order to make the technical problems, technical solutions and advantages to be solved by the utility model clearer, below in conjunction with attached drawing And specific embodiment is described in detail.
On the one hand, the utility model provides a kind of SMC forming uniform temperature and pressure dust feeder of powder, as shown in figs. 1-7, including Material feeding shoe 1, material feeding shoe 1 include material boots shell 11, cover the material boots cover board 12 being located on material boots shell 11, are connected to material boots cover board 12 On powder inlet pipe road 13 and positioned at material 11 rear of boots shell be used for drive material boots shell 11 move cylinder assembly 14, in which:
Powder preheating device 2 is provided on powder inlet pipe road 13;At least two spiral mixing rods are provided in material boots shell 11 3, aperture 31 is provided in spiral mixing rod 3, and the heating element for being heated to spiral mixing rod 3 is inserted in aperture 31 4, the end of spiral mixing rod 3 is provided with the driving assembly 5 for driving spiral mixing rod 3 to rotate.
In use, being entered by powder inlet pipe road 13 and being expected after SMC premixing powder is preheated in powder preheating device 2 In boots shell 11, cylinder assembly 14 pushes material boots shell 11 to be moved forward and backward to be mold powder supply, before and after expecting boots shell 11 In moving process, driving assembly 5 drives spiral mixing rod 3 to rotate, and is stirred to SMC powder, and due to spiral mixing rod 3 It is inside provided with heating element 4, therefore spiral mixing rod 3 can carry out reheating to powder simultaneously, to realize the uniform of SMC powder Heating.
The SMC of the utility model shapes the uniform temperature and pressure dust feeder of powder, passes through the powder preheating on powder inlet pipe road first Device carries out primary heating to powder, then by expecting that the intracorporal spiral mixing rod with heating element of boots shell stirs powder Reheating is mixed and stirred, so as to realize being evenly heated for SMC powder, guarantees powder temperature uniform throughout inside material feeding shoe, and And the compressibility that can be improved SMC powder to powder heating improves part to further increase the density and intensity of SMC Overall performance.
In the utility model, as shown in Fig. 2, powder preheating device 2 may include the powder being connected on powder inlet pipe road 13 Tank 21 and the heating rod 22 being threaded through in powder material tank 21, heating rod 22 can be more and arranged crosswise.It is understood that powder The other modes that material preheating device 2 can also be readily apparent that using those skilled in the art preheat powder, such as electromagnetism Heating, infrared heating, hot oil are thermally conductive, etc..
As shown in Figure 3-4, the position of spiral mixing rod 3 and quantity can according to need flexible setting, specifically, to improve Stirring efficiency, spiral mixing rod 3 can be arranged along the left and right directions of material boots shell 11, and the level height of spiral mixing rod 3 Unanimously.In view of the space in material boots shell 11 is limited, therefore spiral mixing rod 3 is preferably two and the hand of spiral phase of its blade Instead, powder can be sufficiently stirred in this way, further increase heating efficiency.
The mounting means of spiral mixing rod 3, is specifically as follows: circular hole 111 has can be set in the two sides of material boots shell 11, circle Rolling bearing 112 is installed, spiral mixing rod 3 is mounted on material boots shell 11 by rolling bearing 112 in hole 111.
The driving method of spiral mixing rod 3, preferably are as follows: as shown in Figure 4 and Figure 6, driving assembly 5 includes fixed (such as welds Connect) gear 32 at 3 both ends of spiral mixing rod;The lower section of material feeding shoe 1 is provided with chopping block 6, is expecting the two of boots shell 11 on chopping block 6 Side is provided with track 61 (can be specifically fixed on chopping block 6 by mounting screw 66), is provided with and 32 phase of gear on track 61 The tooth socket 62 of cooperation.In Fig. 6, the middle part of chopping block 6 is provided with meal outlet 63, thus powder is fallen into mold.
When work, cylinder assembly 14 is pushed in material 11 movement forward of boots shell, will drive gear 32 on track 61 Movement, gear 32 drive spiral mixing rod 3 to rotate, stir and heat to powder, the SMC powder after stirring and heating is fallen into In mold, cylinder assembly 14 starts backhaul at this time, and in return stroke, gear 32 drives spiral mixing rod 3 to reversely rotate, to powder Material stirs and heats again.The primary reciprocal process of cylinder assembly 14 can stir twice SMC powder, can be true Protect the uniformity of powder heating.
In this way, relative to using individual driving device come the problem of driving spiral mixing rod to lead to higher cost, this reality It applies in example, by the way that gear is arranged at the both ends of spiral mixing rod, the track of spline is set on chopping block, thus by means of original The power of cylinder assembly, during expecting the back-and-forth motion of boots shell, gear and tooth socket are matched to drive spiral mixing rod to revolve Turn, cost can be substantially reduced, while also ensuring that the uniformity of powder heating.
To improve the stability that device works, as shown in fig. 6, can be set vertically on chopping block 6 in the outside of track 61 Baffle 64 is provided with horizontal guide grooves 65 (being specifically as follows rectangular channel) on vertical baffle 64, and the end of spiral mixing rod 3 is pierced by water Flat guide groove 65, and the end of spiral mixing rod 3 is provided with locating snap ring 33 in the outside of vertical baffle 64.Track 61 and vertical gear Plate 64 can make and be structure as a whole.In this way, being inserted into due to the both ends of spiral mixing rod 3 in the horizontal guide grooves 65 of vertical baffle 64 And be fixed with locating snap ring 33, therefore can prevent material boots shell 11 from de-orbiting 61 in the process of running, to improve entire The job stability of device.
As shown in figure 4, material boots cover board 12 on temperature sensor 15 can be set, in order to the temperature to SMC powder into Row monitoring and feedback.The lower section of material boots shell 11 can be set framed shape friction plate 16 (specifically can by mounting screw 18 into Row installation is fixed), it, can replacement frame shape in this way after the abrasion of material feeding shoe 1 since 1 front-rear reciprocation movement of material feeding shoe is prone to wear Friction plate 16 facilitates maintenance, at low cost;The rear portion of material boots shell 11 can be hinged with connecting rod 17, to facilitate connection gas Cylinder component 14.
As shown in fig. 7, the specific structure of cylinder assembly 14 may include cylinder 141, the first air cylinder support 142, the second gas Jar support 143 and mounting screw 144, the cylinder assembly 14 can be connect with material boots shell 11 by connecting rod 17, be provided for it The power of reciprocating motion.
It is directed to the forming uniform temperature and pressure dust feeder of powder of SMC shown in the utility model Fig. 1-7, we have done following reality It tests, experimental result is as follows:
Experiment one:
Powder is heated to be 80 DEG C, 100 DEG C by control, the temperature of at least two different locations passes on record material boots cover board The temperature display of sensor, the uniform situation that comparison heats powder using two kinds of different heating modes, in which: use heating rod pair The two sides temperature of powder heating is as shown in table 1 below, two heated using the uniform temperature and pressure dust feeder of the utility model to powder Side temperature is as shown in table 2:
Table 1: the uniform situation that powder is heated using heating rod in material feeding shoe
Table 2: the uniform situation that powder is heated using the uniform temperature and pressure dust feeder of the utility model
As can be seen from the data in table 1, by the way of heating rod is added in material feeding shoe, since powder cannot be stirred, So powder heating is uneven, for powder internal difference in temperature when set temperature is 80 DEG C, the temperature difference reaches 2.5 DEG C, is in set temperature Powder internal difference in temperature has reached 2.6 DEG C at 100 DEG C.
And the device of the utility model is used, it is can be found that by the data of table 2: powder temperature and set temperature highest deviation It is -0.7 DEG C, gap compares powder internal difference in temperature lower than ± 2.5 DEG C required in temperature and pressure, and gap is only up to 0.3 DEG C, says The bright device by the utility model can heat powder, and heat highly uniform.
Experiment two:
Press power is to add identical lubricant under 1000MPa, is suppressed after heating 100 DEG C to powder, comparison uses The device of the utility model and using in material feeding shoe be added heating rod by the way of suppressed after resulting SMC material density And cross-breaking strength, it is as shown in table 3 below:
Table 3: density and intensity contrast
Powder temperature Density (g/cm3) Cross-breaking strength (MPa)
Uniform temperature and pressure dust feeder 7.45 60.3
Heating rod is added in material feeding shoe 7.38 55.2
It is found, is being moistened with the exemplar that heating rod is suppressed is added in material feeding shoe using the device of the utility model by comparing In the identical situation of lubrication prescription additive amount, powder heat 100 DEG C after using the utility model the SMC material that suppresses of device it is close Degree improves 1.0% than the exemplar density of heating rod forming is added in material feeding shoe, and cross-breaking strength ratio adds in material feeding shoe The cross-breaking strength for entering the exemplar of heating rod forming improves 9.24%.
On the other hand, the utility model provides a kind of press-forming machine, send including the above-mentioned SMC forming uniform temperature and pressure of powder Powder device.Due to the SMC forming uniform temperature and pressure dust feeder structure of powder with it is upper identical, therefore details are not described herein again.
The press-forming machine of the utility model first carries out powder by the powder preheating device on powder inlet pipe road primary Then heating is stirred powder and reheating by the material intracorporal spiral mixing rod with heating element of boots shell, thus It can be realized being evenly heated for SMC powder, guarantee powder temperature uniform throughout inside material feeding shoe, and can mention to powder heating The compressibility of high SMC powder improves the overall performance of part to further increase the density and intensity of SMC.
The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art For personnel, under the premise of not departing from principle described in the utility model, it can also make several improvements and retouch, these improvement It also should be regarded as the protection scope of the utility model with retouching.

Claims (10)

1. a kind of SMC shapes the uniform temperature and pressure dust feeder of powder, including material feeding shoe, the material feeding shoe includes expecting that boots shell, lid are set Material boots cover board on the material boots shell, the powder inlet pipe road being connected on the material boots cover board and after being located at the material boots shell Cylinder assembly of the side for driving the material boots shell mobile, which is characterized in that powder preheating is provided on the powder inlet pipe road Device;It is provided at least two spiral mixing rods in the material boots shell, aperture is provided in the spiral mixing rod, it is described to open Heating element is inserted in hole, the end of the spiral mixing rod is provided with the driving for driving the spiral mixing rod rotation Component.
2. SMC according to claim 1 shapes the uniform temperature and pressure dust feeder of powder, which is characterized in that the powder preheating Device includes the powder material tank being connected on the powder inlet pipe road and several heating rods for being threaded through in the powder material tank.
3. SMC according to claim 1 shapes the uniform temperature and pressure dust feeder of powder, which is characterized in that the auger Stick arranges that the level height of the spiral mixing rod is consistent along the left and right directions of the material boots shell.
4. SMC according to claim 3 shapes the uniform temperature and pressure dust feeder of powder, which is characterized in that the auger Stick is two and the hand of spiral of its blade is opposite.
5. SMC according to claim 1 shapes the uniform temperature and pressure dust feeder of powder, which is characterized in that the material boots shell Two sides be provided with circular hole, rolling bearing is installed, the spiral mixing rod is installed by the rolling bearing in the circular hole On the material boots shell.
6. any SMC shapes the uniform temperature and pressure dust feeder of powder in -5 according to claim 1, which is characterized in that described Driving assembly includes the gear for being installed in the spiral mixing rod both ends;
It is provided with chopping block below the material feeding shoe, the two sides of the material boots shell is provided with track on the chopping block, it is described The tooth socket matched with the gear is provided on track.
7. SMC according to claim 6 shapes the uniform temperature and pressure dust feeder of powder, which is characterized in that on the chopping block It is provided with vertical baffle on the outside of the track, horizontal guide grooves, the end of the spiral mixing rod are provided on the vertical baffle Portion is pierced by the horizontal guide grooves, and the end of the spiral mixing rod is provided with locating snap ring on the outside of the vertical baffle.
8. SMC according to claim 6 shapes the uniform temperature and pressure dust feeder of powder, which is characterized in that the material boots cover board On be provided with temperature sensor.
9. SMC according to claim 6 shapes the uniform temperature and pressure dust feeder of powder, which is characterized in that the material boots shell Lower section framed shape friction plate is set, the rear portion of the material boots shell is hinged with the connecting rod for connecting the cylinder assembly.
10. a kind of press-forming machine, which is characterized in that uniformly warm including the SMC forming powder any in claim 1-9 Press dust feeder.
CN201821722271.8U 2018-10-23 2018-10-23 A kind of uniform temperature and pressure dust feeder of SMC forming powder and press-forming machine Active CN208991751U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114643357A (en) * 2022-02-15 2022-06-21 湖南聚源电驱智能装备有限公司 Heatable material pushing device for warm-pressing molding of soft magnetic powder core of axial flux motor stator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114643357A (en) * 2022-02-15 2022-06-21 湖南聚源电驱智能装备有限公司 Heatable material pushing device for warm-pressing molding of soft magnetic powder core of axial flux motor stator

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Address after: 276017 Building No. 282, Shuangyuehu Road, Linyi High-tech Zone, Shandong Province 101

Patentee after: Shandong Jingchuang Technology Research Institute of Magnetoelectrics Industry Co., Ltd.

Address before: 276017 Building No. 282, Shuangyuehu Road, Linyi High-tech Zone, Shandong Province 101

Patentee before: Shandong Jingchuang Functional Composites Co., Ltd.

CP01 Change in the name or title of a patent holder