CN220720095U

CN220720095U - Speed-adjustable feeding device

Info

Publication number: CN220720095U
Application number: CN202322435787.1U
Authority: CN
Inventors: 周莉斌
Original assignee: Ningbo Outai Plastic Machinery Co ltd
Current assignee: Ningbo Outai Plastic Machinery Co ltd
Priority date: 2023-09-07
Filing date: 2023-09-07
Publication date: 2024-04-05
Anticipated expiration: 2033-09-07

Abstract

The application discloses speed adjustable feed arrangement, including the feeding case, actuating assembly and the feeding subassembly of setting in the feeding incasement, actuating assembly includes driving motor, axis of rotation and connecting rod, driving motor's output and rotation axis connection, feeding subassembly passes through connecting rod and rotation axis connection, and then driving motor can drive rotation axis rotation, in order to drive feeding subassembly and reciprocate from top to bottom between first working position and second working position, when feeding subassembly is in first working position, feeding subassembly is suitable for acceping a certain amount of plastic granules, when feeding subassembly is in second working position, feeding subassembly is suitable for discharging the plastic granules who acceptd to the injection molding machine, thereby feeding subassembly can provide fixed component's plastic granules to the injection molding machine in a circulation, through increasing or reducing driving motor's rotational speed, just can shorten or increase feeding subassembly once feeding, the time of ejection of compact, increase or reduce feeding device's feed rate, realize that feed rate is adjustable.

Description

Speed-adjustable feeding device

Technical Field

The application relates to the technical field of injection molding machines, in particular to a feeding device with adjustable speed.

Background

Injection molding machines, also known as injection molding machines or injection molding machines, are the primary molding devices that make thermoplastic or thermosetting plastics into plastic articles of various shapes using plastic molding dies. The injection molding machine can heat plastic, apply high pressure to the molten plastic, make the molten plastic jet out and fill up the die cavity, the concrete working process of the injection molding machine is: in one working cycle, after a certain amount of plastic is heated and plasticized in a specified time, molten plastic is injected into a cavity of a mold through a screw under a certain pressure and speed, and after injection, the molten plastic injected into the cavity is kept shaped.

However, when the existing injection molding machine is used for feeding, plastic particles are often added into a feed hopper of the injection molding machine at one time, and the plastic particles sequentially enter the injection molding machine in the feed hopper and are then melted in the injection molding machine. The feeding mode is characterized in that extrusion is easy to occur among plastic particles, the feeding speed is unstable, when the feeding speed of the plastic particles is too high, the plastic particles can be accumulated in an injection molding machine, so that the plastic particles are difficult to thoroughly melt in a set time, and excessive waste raw materials and excessive burrs of products are caused, and the quality of the products is reduced; when the feed rate of plastic pellets is slow, the injection molding machine cannot obtain a sufficient amount of molten plastic pellets for injection molding, resulting in failure to mold a complete injection molded product.

Disclosure of Invention

An object of the application is to provide a speed adjustable feed arrangement to realize that the feed rate of injection molding machine is adjustable, solve the unstable problem of injection molding machine feed rate, the feeding is too much or too little.

In order to achieve the above purpose, the technical scheme adopted in the application is as follows: the utility model provides a speed adjustable feed arrangement is suitable for and accomplishes the feeding with the hopper cooperation of injection molding machine, is in including feeding case, drive assembly and setting feeding assembly in the feeding case, drive assembly includes driving motor, axis of rotation and connecting rod, driving motor is fixed to be set up on the lateral wall of feeding case, driving motor's output run through the lateral wall of feeding case and with the rotation axis connection, the first link of connecting rod with rotation axis connection, the second link of connecting rod with feeding assembly is connected, and then driving motor can drive the axis of rotation is in order to drive feeding assembly cyclic reciprocating motion from top to bottom between first operating position and second operating position, works as feeding assembly is in when first operating position, feeding assembly is suitable for acceping a certain amount of plastic granules, works as feeding assembly is in when second operating position, feeding assembly is suitable for discharging the plastic granules who acceptd to the injection molding machine.

Preferably, the feeding box comprises a cubic storage part and a cylindrical feeding part, the storage part is arranged above the feeding part, a transition part is further arranged between the storage part and the feeding part, the side wall of the periphery of the transition part is inclined downwards and forms an included angle with the horizontal plane, and the driving motor is arranged on the outer side wall of the storage part.

As another preferable mode, the material storage part is further provided with a feeding pipe communicated with the material storage part, and the feeding pipe and the driving motor are respectively arranged on two opposite side walls of the material storage part.

Further preferably, the feed inlet of the feed pipe is arranged upwards along the vertical direction, or the feed inlet of the feed pipe is arranged obliquely upwards.

Further, the rotation shaft comprises a rotation shaft main body and a crank part arranged on the rotation shaft main body, the crank part comprises a left crank arm and a right crank arm, a crank pin is arranged between the left crank arm and the right crank arm and deviates from the axis of the rotation shaft main body, a first pin hole is formed in a first connecting end of the connecting rod, and the crank pin is suitable for being matched with the first pin hole so as to rotatably connect the first connecting end of the connecting rod to the crank part.

Further, the feeding assembly comprises a first end portion, a second end portion and a connecting portion connecting the first end portion and the second end portion, wherein the first end portion and the second end portion are suitable for being matched with the inner side wall of the feeding portion, and then the first end portion, the second end portion and the inner side wall of the feeding portion form a containing cavity for containing plastic particles.

Further, the first tip is the piston form, the external diameter of first tip with the internal diameter cooperation of feed portion, first tip is including being close to the top of connecting portion one side with keep away from skirt portion of connecting portion one side, the symmetry is provided with two fixing bases on the inside wall of skirt portion, two be provided with the fixed pinhole that runs through on the fixing base, be provided with on the second link of connecting rod with fixed pinhole complex second post pinhole, and then the second link of connecting rod pass through pass fixed pinhole with the pin of second post pinhole rotationally connect in first tip.

Further, the skirt portion is provided with a ball socket recessed toward the top, a ball socket bushing is arranged in the ball socket, a ball head is arranged at the second connecting end of the connecting rod, and then the ball socket bushing is matched with the ball head to form a ball socket matching pair.

Further, the second end is conical, the maximum diameter of the second end is matched with the inner diameter of the feeding portion, the tip end of the second end is connected with the connecting portion, and the side face of the second end is obliquely arranged downwards.

Further, dynamic sealing is adopted between the first end part, the second end part and the inner side wall of the feeding part.

Compared with the prior art, the beneficial effect of this application lies in:

the utility model provides a feed arrangement includes the feeding case, be provided with axis of rotation and feeding subassembly in the feeding case, be provided with the curved handle portion in the axis of rotation, feeding subassembly passes through the connecting rod and is connected with the crank portion, driven motor can drive the axis of rotation, so that the crank portion drives feeding subassembly along the axis of feeding portion of feeding case and reciprocates from top to bottom between first working position and second working position, feeding subassembly can accept fixed quantity's plastic granules when first working position, and when second working position, in whole discharging to the injection molding machine of plastic granules who acceptd, through increasing or reducing driving motor's rotational speed, just can shorten or increase feeding subassembly once the feeding, the time of ejection of compact, thereby can increase or reduce feeding arrangement's feed rate, realize that feed rate is adjustable.

Drawings

FIG. 1 is a schematic perspective view of a feeding device of the present application;

FIG. 2 is a schematic view of the internal structure of the feeding device of the present application;

FIG. 3 is a schematic view of a rotating shaft in the feeding device;

FIG. 4 is a schematic structural view of a connecting rod in the feeding device of the present application;

FIG. 5 is a schematic view of the feed assembly of the feed device of the present application in a first operating position;

FIG. 6 is a schematic view of the structure of the feeding assembly of the feeding device of the present application during movement from a first working position to a second working position;

FIG. 7 is a schematic view of the feed assembly of the feed device of the present application in a second operational position;

FIG. 8 is a schematic view of the structure of the feeding assembly of the feeding device of the present application;

FIG. 9 is a schematic illustration of the cooperation of a swivel shaft, a link and a feed assembly in a feed device of the present application;

fig. 10 is a partial enlarged view at a in fig. 9.

In the figure: 100. a feed box; 110. a storage part; 120. a feed section; 130. a transition section; 140. a feed pipe; 141. a feed inlet; 200. a drive assembly; 210. a driving motor; 220. a rotating shaft; 221. a rotating shaft main body; 222. a curved handle portion; 2221. a left crank arm; 2222. a right crank arm; 2223. a crank pin; 230. a connecting rod; 231. a first connection end; 2311. a first stud bore; 232. a second connection end; 2321. a second column pin hole; 2322. ball head; 300. a feed assembly; 310. a first end; 311. a top; 312. a skirt portion; 313. a ball socket; 314. a ball socket bushing; 315. a fixing seat; 316. a fixing pin hole; 317. fixing pins; 320. a second end; 330. a connection part; 340. an accommodating cavity.

Detailed Description

The present application will be further described with reference to the specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.

In the description of the present application, it should be noted that, for the azimuth terms such as terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present application and simplifying the description, and it is not to be construed as limiting the specific protection scope of the present application that the device or element referred to must have a specific azimuth configuration and operation, as indicated or implied.

It should be noted that the terms "first," "second," and the like in the description and in the claims of the present application are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

The terms "comprises" and "comprising," along with any variations thereof, in the description and claims of the present application are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements that are expressly listed or inherent to such process, method, article, or apparatus.

As shown in fig. 1, an embodiment of the present utility model provides a quantitative feeding apparatus of an injection molding machine, which includes a storage tank, a driving assembly 200, and a feeding assembly 300.

Wherein, the storage case is including the storage portion 110 that is cube form and the feeding portion 120 that is the cylinder form, the diameter of feeding portion 120 is less than the length and the width of storage portion 110, storage portion 110 sets up in feeding portion 120 top, the inside of storage portion 110 and feeding portion 120 is the cavity state setting, and both inside link up each other, be provided with transition portion 130 between storage portion 110 and the feeding portion 120, transition portion 130 all around lateral wall slope down sets up, and form the contained angle of certain angle with the horizontal plane, and then transition portion 130 can avoid plastic pellet to pile up in storage portion 110 unable whereabouts entering feeding portion 120. The lateral wall of storage portion 110 is last still to be provided with the inlet pipe 140 with storage portion 110 intercommunication, the inside of inlet pipe 140 also sets up for the cavity state, inlet pipe 140 is provided with charge door 141, charge door 141 sets up upwards along vertical direction, perhaps charge door 141 slope sets up, these two kinds of setting methods can both make things convenient for the workman to carry out manual feeding, the workman can pour plastics granule into storage portion 110 through charge door 141 in manually, in addition feed arrangement also can cooperate with screw feeding mechanism, automatically send plastics granule to storage portion 110 in.

Further, as shown in fig. 2-4, the driving assembly 200 includes a driving motor 210 and a rotating shaft 220, the driving motor 210 is fixedly disposed on a side wall of the storage portion 110 through a bolt, an output shaft of the driving motor 210 penetrates through the side wall of the feeding box 100 to extend into the feeding box 100, one end of the rotating shaft 220 is rotatably connected with an inner side wall of the storage portion 110, and the other end of the rotating shaft 220 is in transmission connection with an output shaft of the driving motor 210, so that the driving motor 210 can drive the rotating shaft 220 to rotate. The rotating shaft 220 includes a rotating shaft body 221 and a crank portion 222 provided on the rotating shaft body 221, the crank portion 222 including a left crank arm 2221 and a right crank arm 2222, a crank pin 2223 provided between the left crank arm 2221 and the right crank arm 2222, the crank pin being provided offset from the axis of the rotating shaft body 221. The connecting rod 230 includes a first connecting end 231 and a second connecting end 232, the first connecting end 231 of the connecting rod 230 is provided with a first pin hole 2311, the first pin hole 2311 is adapted to cooperate with a crank pin 2223 to rotatably connect the first connecting end 231 of the connecting rod 230 to the crank portion 222, the second connecting end 232 of the connecting rod 230 is rotatably connected to the feeding assembly 300, and when the driving motor 210 drives the rotating shaft 220 to rotate, the feeding assembly 300 can be driven by the crank portion 222 to reciprocate up and down between the first working position and the second working position.

The feeding assembly 300 includes a first end 310, a second end 320, and a connecting portion 330 for connecting the first end 310 and the second end 320, wherein the first end 310 and the second end 320 are adapted to cooperate with the feeding portion 120 of the storage tank to define a receiving cavity 340, and the first end 310, the second end 320 and the inner sidewall of the feeding portion 120 are all sealed dynamically. As shown in fig. 5, in a specific cycle, the crank part 222 is initially located at the top dead center, the feeding assembly 300 is located at the first working position, the first end 310 is located above the feeding part 120, the outer sidewall of the first end 310 is not matched with the inner sidewall of the feeding part 120, the second end 320 is located in the feeding part 120, the outer sidewall of the second end 320 is matched with the inner sidewall of the feeding part 120, and then the feeding opening between the storage part 110 and the feeding part 120 is in an open state, the feeding part 120 is communicated with the storage part 110, and plastic particles in the storage part 110 can fall into the feeding part 120, but due to the fact that the second end 320 is further arranged in the feeding part 120, the plastic particles falling into the feeding part 120 cannot directly enter the injection molding machine, and the plastic particles are blocked by the second end 320 and accumulated in the feeding part 120 above the second end 320.

After the cycle starts, the crank part 222 rotates from the top dead center to the bottom dead center, and the feeding component 300 is driven by the crank part 222 to move from the first working position to the second working position along the axis of the feeding part 120. As shown in fig. 6, in the first half of the process, the first end 310 moves down into the feeding portion 120, the second end 320 is also located in the feeding portion 120, and the outer side walls of the first end 310 and the second end 320 are both matched with the inner side wall of the feeding portion 120 to form the accommodating cavity 340, since in the previous step, the feeding portion 120 is communicated with the storage portion 110, and further, in the process of moving down the feeding assembly 300, the plastic particles fill the accommodating cavity 340; as shown in fig. 7, in the latter half of this process, the first end 310 is located in the feeding portion 120, the outer side wall of the first end 310 is matched with the inner side wall of the feeding portion 120, the second end 320 moves downward below the feeding portion 120, the outer side wall of the second end 320 is not matched with the inner side wall of the feeding portion 120, the plastic particles in the accommodating cavity 340 can naturally fall into the injection molding machine from the opening between the second end 320 and the lower end surface of the feeding portion 120, the plastic particles in the storage portion 110 are blocked by the first end 310, and only the plastic particles in the accommodating cavity 340 enter the injection molding machine, so as to realize the quantitative feeding of the injection molding machine. Then, the crank part 222 rotates from the bottom dead center to the top dead center, and the feeding component 300 is driven by the crank part 222 to move from the second working position to the first working position along the axis of the feeding part 120, so as to complete a cycle. It can be seen that in the feeding device provided by the application, in one rotation cycle of the crank part 222, the amount of plastic particles supplied to the injection molding machine is fixed, and then the feeding speed can be adjusted only by changing the rotation speed of the crank part 222.

It should be noted that, the feeding opening between the storage portion 110 and the feeding portion 120 is not opened when the crank portion 222 reaches the top dead center, but is not closed when the crank portion 222 leaves the top dead center, but is opened when the crank portion 222 does not reach the top dead center, and is not closed after the crank portion 222 leaves the top dead center, so that the feeding opening between the storage portion 110 and the feeding portion 120 is opened in advance and closed in a delayed manner, so that the plastic particles of the storage portion 110 have a longer time to fall into the feeding portion 120 and fill the accommodating cavity 340. Similarly, the opening between the second end 320 and the lower end surface of the feeding portion 120 is also opened and closed in advance, so that all plastic particles in the receiving cavity 340 can enter the injection molding machine.

In this embodiment, as shown in fig. 8-10, the first end 310 is piston-shaped, and specifically includes a top 311 near the connecting portion 330 and a skirt 312 far from the connecting portion 330, the skirt 312 of the first end 310 is provided with a ball socket 313 recessed toward the top 311, a ball socket bushing 314 is installed in the ball socket 313, the ball socket bushing 314 is installed in the ball socket 313 by a plurality of limit screws, the second connecting end 232 of the connecting rod 230 is provided with a ball head 2322, and the ball head 2322 is installed in cooperation with the ball socket bushing 314, so that the ball socket bushing 314 and the ball head 2322 form a ball socket cooperation pair. Two fixing bases 315 are symmetrically arranged on the inner side wall of the skirt 312 of the first end portion 310, through fixing pin holes 316 are formed in the two fixing bases 315, corresponding second pin holes 2321 are also formed in the second connecting end 232 of the connecting rod 230, and then when the ball head 2322 of the second connecting end 232 is arranged in the ball socket 313, the fixing pins 317 can penetrate through the fixing pin holes 316 and the second pin holes 2321 to enable the connecting rod 230 to be arranged on the first end portion 310, the second connecting end 232 of the connecting rod 230 is hinged with the first end portion 310, and the fixing pins 317 can be used for positioning the first end portion 310 and preventing the first end portion 310 from doing circumferential movement relative to the connecting rod 230. The second end 320 is hollow and cone-shaped, the tip end of the second end 320 is connected with the connecting part 330, the bottom surface of the second end 320 is matched with the inner side wall of the feeding part 120, and the second end 320 is arranged into the hollow and cone-shaped, so that the weight of the second end 320 can be reduced, the load of the connecting part 330 is reduced, and the connecting part 330 is prevented from being broken in the process of moving the second end 320 up and down; the conical shape of the second end 320 allows the plastic particles to slide down the inclined sides of the second end 320, thereby avoiding that some plastic particles remain in the second end 320.

The working process of the feeding device provided by the application is as follows:

firstly, raw materials of plastic particles are added into a storage part 110 through a feed pipe 140; and then the driving motor 210 is connected with an external power supply and the switch thereof is turned on, the rotation speed of the driving motor 210 is regulated, the driving motor 210 drives the rotating shaft to drive the crank part 222 to rotate, and the crank part 222 is connected with the feeding component 300 through the connecting rod 230, so that the driving motor 210 can drive the feeding component 300 to move up and down along the axis of the feeding component 120, when the feeding component 300 is in a first working position, plastic particles enter the accommodating cavity 340, when the feeding component 300 is in a second working position, the plastic particles in the accommodating cavity 340 fall into the injection molding machine, single quantitative feeding is realized, and a worker only needs to regulate the rotation speed of the driving motor 210 to regulate the feeding speed in unit time.

The foregoing has outlined the basic principles, main features and advantages of the present application. It will be appreciated by persons skilled in the art that the present application is not limited to the embodiments described above, and that the embodiments and descriptions described herein are merely illustrative of the principles of the present application, and that various changes and modifications may be made therein without departing from the spirit and scope of the application, which is defined by the appended claims. The scope of protection of the present application is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a speed adjustable feed arrangement is suitable for accomplishing the feeding with injection molding machine's hopper cooperation, its characterized in that includes feeding case, drive assembly and sets up feeding assembly in the feeding case, drive assembly includes driving motor, axis of rotation and connecting rod, driving motor is fixed to be set up on the lateral wall of feeding case, driving motor's output run through the lateral wall of feeding case and with the axis of rotation is connected, the first link of connecting rod with the axis of rotation is connected, the second link of connecting rod with feeding assembly is connected, and then driving motor can drive the axis of rotation is rotated, so as to drive feeding assembly is in cyclic reciprocating motion from top to bottom between first working position and second working position, when feeding assembly is in first working position, feeding assembly is suitable for acceping a certain amount of plastic granules, when feeding assembly is in the second working position, feeding assembly is suitable for discharging the plastic granules that acceptd into injection molding machine.

2. The feeding device of claim 1, wherein the feeding box comprises a cubic storage part and a cylindrical feeding part, the storage part is arranged above the feeding part, a transition part is further arranged between the storage part and the feeding part, the side walls around the transition part are inclined downwards and form included angles with the horizontal plane, and the driving motor is arranged on the outer side wall of the storage part.

3. The feeding device according to claim 2, wherein a feeding pipe communicated with the storage part is further arranged on the storage part, and the feeding pipe and the driving motor are respectively arranged on two opposite side walls of the storage part.

4. A feed device as claimed in claim 3, wherein the feed opening of the feed tube is arranged vertically upwards, or the feed opening of the feed tube is arranged obliquely upwards.

5. The feeder of claim 2, wherein the rotary shaft includes a rotary shaft body and a crank portion provided on the rotary shaft body, the crank portion including a left crank arm and a right crank arm, a crank pin provided between the left crank arm and the right crank arm, the crank pin being disposed offset from an axis of the rotary shaft body, a first pin hole being provided at a first connecting end of the connecting rod, the crank pin being adapted to cooperate with the first pin hole to rotatably connect the first connecting end of the connecting rod to the crank portion.

6. The feeder device of claim 5, wherein the feeder assembly comprises a first end, a second end, and a connecting portion connecting the first end and the second end, the first end and the second end being adapted to mate with an inner sidewall of the feeder portion, whereby the first end, the second end, and the inner sidewall of the feeder portion form a receiving cavity for receiving plastic particles.

7. The feeding device according to claim 6, wherein the first end portion is piston-shaped, an outer diameter of the first end portion is matched with an inner diameter of the feeding portion, the first end portion comprises a top portion close to one side of the connecting portion and a skirt portion far away from one side of the connecting portion, two fixing seats are symmetrically arranged on an inner side wall of the skirt portion, two fixing holes penetrating through the fixing seats are formed in the two fixing seats, a second connecting end of the connecting rod is provided with a second column pin hole matched with the fixing pin hole, and further a second connecting end of the connecting rod is rotatably connected to the first end portion through a pin penetrating through the fixing pin hole and the second column pin hole.

8. The feeder of claim 7, wherein the skirt is provided with a socket recessed toward the top, a socket bushing is mounted in the socket, and the second connecting end of the connecting rod is provided with a ball head, and the socket bushing is mounted in cooperation with the ball head to form a socket-and-socket mating pair.

9. The feeder device of claim 6, wherein the second end is conical, a maximum diameter of the second end is matched with an inner diameter of the feeder portion, a tip of the second end is connected with the connecting portion, and a side surface of the second end is inclined downward.

10. The feeder device of any of claims 6-9, wherein a dynamic seal is provided between the first end, the second end, and an inner sidewall of the feeder portion.