Automatic powder adding device of forming machine

Abstract

The utility model discloses an automatic powder adding device of a forming machine. The automatic powder adding device comprises a powder adding machine with a powder storage cavity and a powder adding channel, the telescopic powder adding head is arranged in the powder adding channel and consists of a fixed powder guide head and a movable powder guide head, and a powder guide channel in the telescopic powder adding head is communicated with the powder storage cavity; the telescopic control mechanism consists of a control rod and an electric cylinder; the control rod is connected with the movable powder guide head and slidably penetrates through the fixed powder guide head to the outside of the powder adding machine; the linear vibrator is arranged in the telescopic powder adding head, and a plurality of vibrating rods penetrating into the powder guiding channel in a sliding mode are arranged on the linear vibrator. The telescopic powder adding head composed of the fixed powder guiding head and the movable powder guiding head is arranged on the powder adding machine, and the electric cylinder and the control rod are arranged to control the movable powder guiding head to move, so that when the powder adding machine is aligned with the die cavity of the forming machine, the movable powder guiding head can be controlled to stretch into the die cavity to evenly and flatly add plastic powder layer by layer.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic molding, in particular to an automatic powder adding device for a molding machine. Background Art

[0002] Plastic powder molding is to add plastic powder into the mold of the molding machine, and the molding machine presses the powder in the mold into shape by molding. Therefore, before the molding machine molds, it is necessary to add plastic powder into the mold.

[0003] At present, conventional plastic powder molding processing usually pushes plastic powder into the mold groove of the molding machine by pushing the plastic powder. Specifically, the plastic powder is placed in a storage box with an opening at the bottom, and the storage box is pushed to slide on the molding table. When the storage box is placed above the mold groove, the plastic powder in the storage box will fall into the mold groove, and then the storage box is reset to scrape the plastic powder at the mold groove. However, when the powder is added in this way, due to the influence of the dropping speed and the air resistance in the mold groove, it will be difficult for the powder plastic to be evenly distributed and spread evenly in the mold groove. After molding, it is easy to cause the molded plastic parts to have uneven density, affecting the quality of the plastic molded parts.

[0004] Therefore, the existing molding machine uses an automatic powder adding device to push the plastic powder to fall, which is difficult to evenly distribute and evenly spread the powder plastic in the mold cavity, which easily leads to uneven density of the plastic molded parts. Utility Model Content

[0005] The utility model aims to provide an automatic powder adding device for a molding machine, so as to solve the technical problem in the prior art that it is difficult to evenly distribute and evenly spread powder plastic in a mold cavity, which easily leads to uneven density of plastic molded parts.

[0006] In order to solve the above technical problems, the utility model specifically provides the following technical solutions:

[0007] An automatic powder adding device for a molding machine, comprising:

[0008] A powder feeder, which can be moved to the top of the die cavity of the molding machine to add powder, and the powder feeder is provided with a powder storage chamber that can add powder from the outside, and the bottom of the powder storage chamber is provided with a powder adding channel that runs through the bottom of the powder feeder;

[0009] A retractable powder adding head, comprising a fixed powder guiding head and a movable powder guiding head which are slidably connected and communicated with each other, wherein the fixed powder guiding head is sealed and fixedly arranged in the powder adding channel, and the movable powder guiding head is slidably arranged in the powder adding channel;

[0010] A telescopic control mechanism, comprising an electric cylinder and a control rod connected to the cylinder rod, wherein the control rod slides through the fixed powder guide head and is connected to control the sliding of the movable powder guide head, and the electric cylinder is arranged outside the powder feeder;

[0011] A high-frequency vibration mechanism, comprising a linear vibrator and a plurality of vibrating rods connected to the linear vibrator, wherein the linear vibrator is disposed in the retractable powder adding head, and the vibrating rods are slidably inserted into a powder guiding channel formed in the retractable powder adding head;

[0012] The shortest length of the fixed powder guide head and the movable powder guide head is equal to the length of the powder adding channel, the lower end channel opening of the powder guide channel is located on the circumferential side wall of the movable powder guide head, and the upper end of the fixed powder guide head is flush with the conical bottom of the powder storage cavity;

[0013] After the movable powder guide head is extended out of the powder adding channel to a set position by the control rod, the movable powder guide head is slowly moved upward, and the linear vibrator controls the multiple vibrating rods to vibrate in the powder guide channel, so that the plastic powder in the powder storage chamber falls smoothly into the mold groove of the molding machine along the powder guide channel.

[0014] As a preferred solution of the utility model, a plurality of upper powder guide holes distributed around the axis of the fixed powder guide head are formed in the fixed powder guide head, and the fixed powder guide head protrudes at the lower ports of the upper powder guide holes to form a conduit;

[0015] The movable powder guiding head is formed with a plurality of lower powder guiding holes distributed around its axis, and the plurality of guide tubes are slidably inserted in the plurality of lower powder guiding holes;

[0016] The lower ports of the plurality of lower powder guiding holes are distributed on the axial side wall of the movable powder guiding head, and the plurality of upper powder guiding holes and the plurality of lower powder guiding holes together constitute a powder guiding channel.

[0017] As a preferred solution of the utility model, a vibration cavity is arranged inside the movable powder guide head, the linear vibrator is centrally arranged in the vibration cavity, and a plurality of vibrating rods are arranged around the linear vibrator;

[0018] The upper end of each of the vibrating rods slides upward and penetrates into the corresponding lower powder guide hole, and the vibrating rod is sealingly and slidably connected to the inner wall between the lower powder guide hole and the vibration chamber.

[0019] As a preferred solution of the utility model, the upper end of the vibrating rod is formed with a tip, and the rod body of the vibrating rod is provided with a plurality of grooves distributed around the axis thereof.

[0020] As a preferred solution of the utility model, a wire hole is provided at the end of the control rod along its axis, and the lower end of the control rod penetrates into the vibration cavity.

[0021] As a preferred solution of the utility model, a protection tube is provided at the upper end of the fixed powder guide head, the control rod is slidably placed in the protection tube, and the upper end of the protection tube passes through the outside of the powder feeder.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] The utility model provides a retractable powder adding head composed of a fixed powder guiding head and a movable powder guiding head on a powder adding machine, and an electric cylinder and a control rod are provided to control the movement of the movable powder guiding head, so that when the powder adding machine is aligned with the die groove of a molding machine, the movable powder guiding head can be controlled to extend into the die groove to uniformly and evenly add plastic powder layer by layer.

[0024] And during the powder adding process, the linear vibrator arranged in the retractable powder adding head can drive multiple vibrating rods to vibrate at high frequency in the powder guiding channel, so that the plastic powder can fall smoothly and prevent blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0026] Figure 1 A schematic diagram of the structure of an automatic powder adding device for a molding machine is provided for an embodiment of the utility model;

[0027] Figure 2 A schematic diagram of the structure of the vibrating rod portion of the automatic powder adding device of the molding machine is provided for the embodiment of the utility model.

[0028] The numbers in the figure represent the following:

[0029] 1- powder adding machine; 2- telescopic powder adding head; 3- telescopic control mechanism; 4- high frequency vibration mechanism;

[0030] 11-powder storage chamber; 12-powder adding channel; 21-fixed powder guide head; 22-movable powder guide head; 23-powder guide channel; 24-protection tube; 31-electric cylinder; 32-control rod; 41-linear vibrator; 42-vibrating rod;

[0031] 211 - upper powder guide hole; 212 - guide tube; 221 - lower powder guide hole; 222 - vibration chamber; 321 - line hole; 421 - tip; 422 - groove. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] like Figure 1 As shown, the utility model provides an automatic powder adding device for a molding machine, comprising:

[0034] A powder feeder 1, which can be moved to the top of the die cavity of the molding machine to add powder. The powder feeder 1 is provided with a powder storage chamber 11 for adding powder from the outside, and a powder adding channel 12 is provided at the bottom of the powder storage chamber 11 and runs through the bottom of the powder feeder 1;

[0035] The retractable powder adding head 2 comprises a fixed powder guiding head 21 and a movable powder guiding head 22 which are slidably connected and communicated with each other, the fixed powder guiding head 21 is sealed and fixedly arranged in the powder adding channel 12, and the movable powder guiding head 22 is slidably arranged in the powder adding channel 12;

[0036] The telescopic control mechanism 3 includes an electric cylinder 31 and a control rod 32 connected to the cylinder rod thereof. The control rod 32 slides through the fixed powder guide head 21 and is connected to control the sliding of the movable powder guide head 22. The electric cylinder 31 is arranged outside the powder feeder 1.

[0037] The high-frequency vibration mechanism 4 includes a linear vibrator 41 and a plurality of vibrating rods 42 connected to the linear vibrator 41. The linear vibrator 41 is arranged in the telescopic powder adding head 2, and the vibrating rods 42 are slidably inserted into the powder guiding channel 23 formed in the telescopic powder adding head 2;

[0038] The shortest length of the fixed powder guide head 21 and the movable powder guide head 22 is equal to the length of the powder adding channel 12, the lower end of the powder guide channel 23 is located on the circumferential side wall of the movable powder guide head 22, and the upper end of the fixed powder guide head 21 is flush with the conical bottom of the powder storage chamber 11;

[0039] After the movable powder guide head 22 is extended out of the powder adding channel 12 to the set position by the control rod 32, the movable powder guide head 22 is slowly moved upward, and the linear vibrator 41 controls multiple vibrating rods 42 to vibrate in the powder guide channel 23, so that the plastic powder in the powder storage chamber 11 falls smoothly into the mold groove of the molding machine along the powder guide channel 23.

[0040] The automatic powder adding device of this embodiment mainly moves the powder adding machine 1 to a position aligned with the mold groove of the molding machine through external movable parts, and then uses the electric cylinder 31 to make the control rod 32 push the movable powder guide head 22 into the bottom of the mold groove. At this time, the port of the powder guide channel 23 located on the side wall of the movable powder guide head 22 is opened, and the plastic powder in the powder storage chamber 11 falls into the mold groove of the molding machine along the powder guide channel 23 of the fixed powder guide head 21 and the movable powder guide head 22 to realize automatic powder adding.

[0041] During the powder adding process, the linear vibrator 41 vibrates at a high frequency along the axis of the powder adding channel 12, so that the multiple vibrating rods 42 vibrate in the powder guiding channel 23, so that the plastic powder in the powder guiding channel 23 falls into the mold cavity quickly and smoothly to avoid blockage.

[0042] And during the powder adding process, the electric cylinder 31 causes the control rod 32 to pull the movable powder guide head 22 to slowly move upward until it enters the powder adding channel 12, that is, as the amount of powder in the mold cavity increases, the movable powder guide head 22 gradually moves upward, so that the plastic powder can be filled into the mold cavity layer by layer, and the powder adding is more uniform.

[0043] Furthermore, the vibration of the linear vibrator 41 during the powder adding process will cause the movable powder guiding head 22 to vibrate, thereby making the powder in the mold cavity more flat.

[0044] Compared with the existing manual powder adding device, the automatic powder adding device of this embodiment can extend the movable powder guiding head 22 into the mold groove of the molding machine to add powder through the electric cylinder 31 and the control rod 32, thereby avoiding the waste caused by the powder being scattered on the table of the molding machine, and is safer.

[0045] During the powder adding process, the linear vibrator 41 and the vibrating rod 42 are used to vibrate the powder guide channel 23, so that the plastic powder can fall smoothly into the mold groove and can be spread flat by vibration, thereby avoiding uneven density of the plastic molded part caused by uneven distribution of the plastic powder in the mold groove.

[0046] The powder guiding channel 23 is used to guide the plastic powder in the powder storage chamber 11 along its outlet to the die cavity of the molding machine, and the powder guiding channel 23 can be extended or shortened with the movement between the fixed powder guiding head 21 and the movable powder guiding head 22. Therefore, a preferred embodiment of the powder guiding channel 23 is provided below.

[0047] like Figure 1 As shown, a plurality of upper powder guiding holes 211 distributed around the axis of the fixed powder guiding head 21 are formed in the fixed powder guiding head 21, and a conduit 212 is formed by protruding at the lower end of the upper powder guiding hole 211 of the fixed powder guiding head 21;

[0048] A plurality of lower powder guiding holes 221 distributed around the axis of the movable powder guiding head 22 are formed in the movable powder guiding head 22, and a plurality of guide tubes 212 are slidably inserted in the plurality of lower powder guiding holes 221;

[0049] The lower ports of the plurality of lower powder guiding holes 221 are distributed on the axial side wall of the movable powder guiding head 22 , and the plurality of upper powder guiding holes 211 and the plurality of lower powder guiding holes 221 together constitute a powder guiding channel 23 .

[0050] Specifically, the plastic powder in the powder storage chamber 11 falls into the lower powder guide hole 221 along the upper powder guide hole 211 and the conduit 212 , and falls into the mold cavity of the molding machine from the port of the lower powder guide hole 221 located on the side wall of the movable powder guide head 22 .

[0051] Among them, the distance between the bottom of the powder feeder 1 and the mold groove of the molding machine is equal to the distance from the bottom of the movable powder guide head 22 to the lower port of the lower powder guide hole 221, that is, after the movable powder guide head 22 is completely moved out of the mold groove, the lower port of the lower powder guide hole 221 is blocked by the inner wall of the powder adding channel 12 and the powder adding is stopped, thereby avoiding excessive powder addition and scattering on the table surface to cause waste.

[0052] During the powder adding process, the linear vibrator 41 needs to drive the plurality of vibrating rods 42 to vibrate at a high frequency in the powder guiding channel 23 , and therefore, the following preferred embodiments are provided.

[0053] like Figure 1 As shown, a vibration chamber 222 is provided inside the movable powder guide head 22, a linear vibrator 41 is centrally disposed in the vibration chamber 222, and a plurality of vibrating rods 42 are disposed around the linear vibrator 41;

[0054] The upper end of each vibrating rod 42 slides upward and penetrates into the corresponding lower powder guide hole 221 , and the vibrating rod 42 is sealed and slidably connected to the inner wall between the lower powder guide hole 221 and the vibration chamber 222 .

[0055] Specifically, when the linear vibrator 41 in the vibration chamber 222 is working, it can drive the multiple vibrating rods 42 to vibrate at high frequency in the multiple lower powder guide holes 221, so that the plastic powder can fall quickly and smoothly.

[0056] And because the linear vibrator 41 vibrates axially in the vibration cavity 222 in the movable powder guide head 22, the movable powder guide head 22 will vibrate and vibrate and spread the plastic powder in the mold groove flat, and the axial vibration does not affect the axial movement of the movable powder guide head 22, and makes it easier for the plastic powder in the powder guide channel 23 to fall.

[0057] In order to improve the anti-blocking effect of the vibrating rod 42, Figure 2 As shown, a tip 421 is formed at the upper end of the vibrating rod 42 , and a plurality of grooves 422 distributed around the axis of the vibrating rod 42 are provided at the rod body of the vibrating rod 42 .

[0058] Specifically, the upper end of the vibrating rod 42 forms a tip 421 , so during the vibrating process, the resistance to the axial reciprocating vibration of the vibrating rod 42 is smaller, that is, it is easier to vibrate in the lower powder guide hole 221 .

[0059] Furthermore, when the tip 421 of the vibrating rod 42 is inserted into the plastic powder, a cavity is formed in the groove 422 , and the extruded plastic powder collapses into the groove 422 and falls along the structure.

[0060] According to the above, the linear vibrator 41 is disposed in the vibration chamber 222 of the movable powder guide head 22. Therefore, a preferred embodiment is provided below so that the linear vibrator 41 can be easily powered.

[0061] like Figure 1 As shown, a wire hole 321 is provided at the end of the control rod 32 along its axis, and the lower end of the control rod 32 penetrates into the vibration cavity 222 .

[0062] Specifically, the wire hole 321 of the control rod 32 is connected to the vibration chamber 222, so that the vibration chamber 222 is connected to the outside of the powder feeder 1 through the wire hole 321, and the external wire can enter the vibration chamber 222 along the wire hole 321 to supply power to the linear vibrator 41 without affecting the movement of the control rod 32.

[0063] During the powder adding process, the control rod 32 needs to be movable, and the control rod 32 passes through the powder storage chamber 11 , thereby interfering with the plastic powder in the powder storage chamber 11 .

[0064] Therefore, if Figure 1 As shown, a protection tube 24 is provided at the upper end of the fixed powder guide head 21 , the control rod 32 is slidably placed in the protection tube 24 , and the upper end of the protection tube 24 penetrates to the outside of the powder feeder 1 .

[0065] Specifically, the protective tube 24 is fixedly placed in the powder storage chamber 11, and the control rod 32 is slidably placed in the protective tube 24, so as to avoid the contact between the plastic powder and the control rod 32, which can not only ensure the reliability of the control rod 32, but also avoid the waste of plastic due to frequent sliding and heat adhesion to the control rod 32.

[0066] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. An automatic powder adding device for a molding machine, characterized in that: include: A powder adding machine (1), the powder adding machine (1) can be moved to the top of the die cavity of the molding machine to add powder, the powder adding machine (1) is provided with a powder storage chamber (11) capable of adding powder from the outside, and the bottom of the powder storage chamber (11) is provided with a powder adding channel (12) penetrating the bottom of the powder adding machine (1); A retractable powder adding head (2), comprising a fixed powder guiding head (21) and a movable powder guiding head (22) which are slidably connected and communicate with each other, wherein the fixed powder guiding head (21) is sealed and fixedly arranged in the powder adding channel (12), and the movable powder guiding head (22) is slidably arranged in the powder adding channel (12); A telescopic control mechanism (3), comprising an electric cylinder (31) and a control rod (32) connected to the cylinder rod thereof, wherein the control rod (32) slides through the fixed powder guide head (21) and is connected to control the sliding of the movable powder guide head (22), and the electric cylinder (31) is arranged outside the powder feeder (1); A high-frequency vibration mechanism (4), comprising a linear vibrator (41) and a plurality of vibrating rods (42) connected to the linear vibrator (41), wherein the linear vibrator (41) is arranged in the telescopic powder adding head (2), and the vibrating rods (42) are slidably inserted into a powder guide channel (23) formed in the telescopic powder adding head (2); The shortest length of the fixed powder guide head (21) and the movable powder guide head (22) is equal to the length of the powder adding channel (12); the lower end of the powder guide channel (23) is located on the circumferential side wall of the movable powder guide head (22); and the upper end of the fixed powder guide head (21) is flush with the conical bottom of the powder storage chamber (11); After the movable powder guide head (22) is extended out of the powder adding channel (12) to a set position by the control rod (32), the movable powder guide head (22) is slowly moved upward, and the linear vibrator (41) controls the plurality of vibrating rods (42) to vibrate in the powder guide channel (23), so that the plastic powder in the powder storage chamber (11) falls smoothly into the mold groove of the molding machine along the powder guide channel (23).

2. The automatic powder adding device for a molding machine according to claim 1, characterized in that: The fixed powder guide head (21) is formed with a plurality of upper powder guide holes (211) distributed around its axis, and the fixed powder guide head (21) is protruded at the lower end of the upper powder guide hole (211) to form a guide tube (212); The movable powder guiding head (22) is formed with a plurality of lower powder guiding holes (221) distributed around its axis, and the plurality of guide tubes (212) are slidably inserted in the plurality of lower powder guiding holes (221); The lower ports of the plurality of lower powder guide holes (221) are distributed on the axial side wall of the movable powder guide head (22), and the plurality of upper powder guide holes (211) and the plurality of lower powder guide holes (221) together constitute a powder guide channel (23).

3. The automatic powder adding device for a molding machine according to claim 2, characterized in that: A vibration chamber (222) is arranged inside the movable powder guide head (22), the linear vibrator (41) is centrally arranged in the vibration chamber (222), and a plurality of vibrating rods (42) are arranged around the linear vibrator (41); The upper end of each of the vibrating rods (42) slides upward and penetrates into the corresponding lower powder guide hole (221), and the vibrating rod (42) is sealed and slidably connected to the inner wall between the lower powder guide hole (221) and the vibration chamber (222).

4. The automatic powder adding device for a molding machine according to claim 3, characterized in that: The upper end of the vibrating rod (42) is formed with a tip (421), and the shaft of the vibrating rod (42) is provided with a plurality of grooves (422) distributed around the axis thereof.

5. The automatic powder adding device for a molding machine according to claim 3, characterized in that: A wire hole (321) is provided at the end of the control rod (32) along its axis, and the lower end of the control rod (32) penetrates into the vibration cavity (222).

6. The automatic powder adding device for a molding machine according to claim 1, characterized in that: A protection tube (24) is provided at the upper end of the fixed powder guide head (21), the control rod (32) is slidably placed in the protection tube (24), and the upper end of the protection tube (24) penetrates to the outside of the powder feeder (1).

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